1 /******************************************************************************* 2 3 Intel 10 Gigabit PCI Express Linux driver 4 Copyright(c) 1999 - 2016 Intel Corporation. 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms and conditions of the GNU General Public License, 8 version 2, as published by the Free Software Foundation. 9 10 This program is distributed in the hope it will be useful, but WITHOUT 11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 more details. 14 15 You should have received a copy of the GNU General Public License along with 16 this program; if not, write to the Free Software Foundation, Inc., 17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 18 19 The full GNU General Public License is included in this distribution in 20 the file called "COPYING". 21 22 Contact Information: 23 Linux NICS <linux.nics@intel.com> 24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 26 27 *******************************************************************************/ 28 29 #include <linux/types.h> 30 #include <linux/module.h> 31 #include <linux/pci.h> 32 #include <linux/netdevice.h> 33 #include <linux/vmalloc.h> 34 #include <linux/string.h> 35 #include <linux/in.h> 36 #include <linux/interrupt.h> 37 #include <linux/ip.h> 38 #include <linux/tcp.h> 39 #include <linux/sctp.h> 40 #include <linux/pkt_sched.h> 41 #include <linux/ipv6.h> 42 #include <linux/slab.h> 43 #include <net/checksum.h> 44 #include <net/ip6_checksum.h> 45 #include <linux/etherdevice.h> 46 #include <linux/ethtool.h> 47 #include <linux/if.h> 48 #include <linux/if_vlan.h> 49 #include <linux/if_macvlan.h> 50 #include <linux/if_bridge.h> 51 #include <linux/prefetch.h> 52 #include <linux/bpf.h> 53 #include <linux/bpf_trace.h> 54 #include <linux/atomic.h> 55 #include <scsi/fc/fc_fcoe.h> 56 #include <net/udp_tunnel.h> 57 #include <net/pkt_cls.h> 58 #include <net/tc_act/tc_gact.h> 59 #include <net/tc_act/tc_mirred.h> 60 #include <net/vxlan.h> 61 #include <net/mpls.h> 62 63 #include "ixgbe.h" 64 #include "ixgbe_common.h" 65 #include "ixgbe_dcb_82599.h" 66 #include "ixgbe_sriov.h" 67 #include "ixgbe_model.h" 68 69 char ixgbe_driver_name[] = "ixgbe"; 70 static const char ixgbe_driver_string[] = 71 "Intel(R) 10 Gigabit PCI Express Network Driver"; 72 #ifdef IXGBE_FCOE 73 char ixgbe_default_device_descr[] = 74 "Intel(R) 10 Gigabit Network Connection"; 75 #else 76 static char ixgbe_default_device_descr[] = 77 "Intel(R) 10 Gigabit Network Connection"; 78 #endif 79 #define DRV_VERSION "5.1.0-k" 80 const char ixgbe_driver_version[] = DRV_VERSION; 81 static const char ixgbe_copyright[] = 82 "Copyright (c) 1999-2016 Intel Corporation."; 83 84 static const char ixgbe_overheat_msg[] = "Network adapter has been stopped because it has over heated. Restart the computer. If the problem persists, power off the system and replace the adapter"; 85 86 static const struct ixgbe_info *ixgbe_info_tbl[] = { 87 [board_82598] = &ixgbe_82598_info, 88 [board_82599] = &ixgbe_82599_info, 89 [board_X540] = &ixgbe_X540_info, 90 [board_X550] = &ixgbe_X550_info, 91 [board_X550EM_x] = &ixgbe_X550EM_x_info, 92 [board_x550em_x_fw] = &ixgbe_x550em_x_fw_info, 93 [board_x550em_a] = &ixgbe_x550em_a_info, 94 [board_x550em_a_fw] = &ixgbe_x550em_a_fw_info, 95 }; 96 97 /* ixgbe_pci_tbl - PCI Device ID Table 98 * 99 * Wildcard entries (PCI_ANY_ID) should come last 100 * Last entry must be all 0s 101 * 102 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 103 * Class, Class Mask, private data (not used) } 104 */ 105 static const struct pci_device_id ixgbe_pci_tbl[] = { 106 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), board_82598 }, 107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), board_82598 }, 108 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), board_82598 }, 109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), board_82598 }, 110 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2), board_82598 }, 111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), board_82598 }, 112 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), board_82598 }, 113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), board_82598 }, 114 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), board_82598 }, 115 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), board_82598 }, 116 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), board_82598 }, 117 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), board_82598 }, 118 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), board_82599 }, 119 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM), board_82599 }, 120 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR), board_82599 }, 121 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), board_82599 }, 122 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM), board_82599 }, 123 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ), board_82599 }, 124 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4), board_82599 }, 125 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE), board_82599 }, 126 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE), board_82599 }, 127 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM), board_82599 }, 128 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE), board_82599 }, 129 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T), board_X540 }, 130 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2), board_82599 }, 131 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS), board_82599 }, 132 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_QSFP_SF_QP), board_82599 }, 133 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599EN_SFP), board_82599 }, 134 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF_QP), board_82599 }, 135 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T1), board_X540 }, 136 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T), board_X550}, 137 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T1), board_X550}, 138 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KX4), board_X550EM_x}, 139 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_XFI), board_X550EM_x}, 140 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KR), board_X550EM_x}, 141 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_10G_T), board_X550EM_x}, 142 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_SFP), board_X550EM_x}, 143 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_1G_T), board_x550em_x_fw}, 144 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR), board_x550em_a }, 145 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR_L), board_x550em_a }, 146 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP_N), board_x550em_a }, 147 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII), board_x550em_a }, 148 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII_L), board_x550em_a }, 149 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_10G_T), board_x550em_a}, 150 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP), board_x550em_a }, 151 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T), board_x550em_a_fw }, 152 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T_L), board_x550em_a_fw }, 153 /* required last entry */ 154 {0, } 155 }; 156 MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); 157 158 #ifdef CONFIG_IXGBE_DCA 159 static int ixgbe_notify_dca(struct notifier_block *, unsigned long event, 160 void *p); 161 static struct notifier_block dca_notifier = { 162 .notifier_call = ixgbe_notify_dca, 163 .next = NULL, 164 .priority = 0 165 }; 166 #endif 167 168 #ifdef CONFIG_PCI_IOV 169 static unsigned int max_vfs; 170 module_param(max_vfs, uint, 0); 171 MODULE_PARM_DESC(max_vfs, 172 "Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)"); 173 #endif /* CONFIG_PCI_IOV */ 174 175 static unsigned int allow_unsupported_sfp; 176 module_param(allow_unsupported_sfp, uint, 0); 177 MODULE_PARM_DESC(allow_unsupported_sfp, 178 "Allow unsupported and untested SFP+ modules on 82599-based adapters"); 179 180 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) 181 static int debug = -1; 182 module_param(debug, int, 0); 183 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); 184 185 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); 186 MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); 187 MODULE_LICENSE("GPL"); 188 MODULE_VERSION(DRV_VERSION); 189 190 static struct workqueue_struct *ixgbe_wq; 191 192 static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev); 193 static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *); 194 195 static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter, 196 u32 reg, u16 *value) 197 { 198 struct pci_dev *parent_dev; 199 struct pci_bus *parent_bus; 200 201 parent_bus = adapter->pdev->bus->parent; 202 if (!parent_bus) 203 return -1; 204 205 parent_dev = parent_bus->self; 206 if (!parent_dev) 207 return -1; 208 209 if (!pci_is_pcie(parent_dev)) 210 return -1; 211 212 pcie_capability_read_word(parent_dev, reg, value); 213 if (*value == IXGBE_FAILED_READ_CFG_WORD && 214 ixgbe_check_cfg_remove(&adapter->hw, parent_dev)) 215 return -1; 216 return 0; 217 } 218 219 static s32 ixgbe_get_parent_bus_info(struct ixgbe_adapter *adapter) 220 { 221 struct ixgbe_hw *hw = &adapter->hw; 222 u16 link_status = 0; 223 int err; 224 225 hw->bus.type = ixgbe_bus_type_pci_express; 226 227 /* Get the negotiated link width and speed from PCI config space of the 228 * parent, as this device is behind a switch 229 */ 230 err = ixgbe_read_pci_cfg_word_parent(adapter, 18, &link_status); 231 232 /* assume caller will handle error case */ 233 if (err) 234 return err; 235 236 hw->bus.width = ixgbe_convert_bus_width(link_status); 237 hw->bus.speed = ixgbe_convert_bus_speed(link_status); 238 239 return 0; 240 } 241 242 /** 243 * ixgbe_check_from_parent - Determine whether PCIe info should come from parent 244 * @hw: hw specific details 245 * 246 * This function is used by probe to determine whether a device's PCI-Express 247 * bandwidth details should be gathered from the parent bus instead of from the 248 * device. Used to ensure that various locations all have the correct device ID 249 * checks. 250 */ 251 static inline bool ixgbe_pcie_from_parent(struct ixgbe_hw *hw) 252 { 253 switch (hw->device_id) { 254 case IXGBE_DEV_ID_82599_SFP_SF_QP: 255 case IXGBE_DEV_ID_82599_QSFP_SF_QP: 256 return true; 257 default: 258 return false; 259 } 260 } 261 262 static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter, 263 int expected_gts) 264 { 265 struct ixgbe_hw *hw = &adapter->hw; 266 int max_gts = 0; 267 enum pci_bus_speed speed = PCI_SPEED_UNKNOWN; 268 enum pcie_link_width width = PCIE_LNK_WIDTH_UNKNOWN; 269 struct pci_dev *pdev; 270 271 /* Some devices are not connected over PCIe and thus do not negotiate 272 * speed. These devices do not have valid bus info, and thus any report 273 * we generate may not be correct. 274 */ 275 if (hw->bus.type == ixgbe_bus_type_internal) 276 return; 277 278 /* determine whether to use the parent device */ 279 if (ixgbe_pcie_from_parent(&adapter->hw)) 280 pdev = adapter->pdev->bus->parent->self; 281 else 282 pdev = adapter->pdev; 283 284 if (pcie_get_minimum_link(pdev, &speed, &width) || 285 speed == PCI_SPEED_UNKNOWN || width == PCIE_LNK_WIDTH_UNKNOWN) { 286 e_dev_warn("Unable to determine PCI Express bandwidth.\n"); 287 return; 288 } 289 290 switch (speed) { 291 case PCIE_SPEED_2_5GT: 292 /* 8b/10b encoding reduces max throughput by 20% */ 293 max_gts = 2 * width; 294 break; 295 case PCIE_SPEED_5_0GT: 296 /* 8b/10b encoding reduces max throughput by 20% */ 297 max_gts = 4 * width; 298 break; 299 case PCIE_SPEED_8_0GT: 300 /* 128b/130b encoding reduces throughput by less than 2% */ 301 max_gts = 8 * width; 302 break; 303 default: 304 e_dev_warn("Unable to determine PCI Express bandwidth.\n"); 305 return; 306 } 307 308 e_dev_info("PCI Express bandwidth of %dGT/s available\n", 309 max_gts); 310 e_dev_info("(Speed:%s, Width: x%d, Encoding Loss:%s)\n", 311 (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" : 312 speed == PCIE_SPEED_5_0GT ? "5.0GT/s" : 313 speed == PCIE_SPEED_2_5GT ? "2.5GT/s" : 314 "Unknown"), 315 width, 316 (speed == PCIE_SPEED_2_5GT ? "20%" : 317 speed == PCIE_SPEED_5_0GT ? "20%" : 318 speed == PCIE_SPEED_8_0GT ? "<2%" : 319 "Unknown")); 320 321 if (max_gts < expected_gts) { 322 e_dev_warn("This is not sufficient for optimal performance of this card.\n"); 323 e_dev_warn("For optimal performance, at least %dGT/s of bandwidth is required.\n", 324 expected_gts); 325 e_dev_warn("A slot with more lanes and/or higher speed is suggested.\n"); 326 } 327 } 328 329 static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter) 330 { 331 if (!test_bit(__IXGBE_DOWN, &adapter->state) && 332 !test_bit(__IXGBE_REMOVING, &adapter->state) && 333 !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state)) 334 queue_work(ixgbe_wq, &adapter->service_task); 335 } 336 337 static void ixgbe_remove_adapter(struct ixgbe_hw *hw) 338 { 339 struct ixgbe_adapter *adapter = hw->back; 340 341 if (!hw->hw_addr) 342 return; 343 hw->hw_addr = NULL; 344 e_dev_err("Adapter removed\n"); 345 if (test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) 346 ixgbe_service_event_schedule(adapter); 347 } 348 349 static void ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg) 350 { 351 u32 value; 352 353 /* The following check not only optimizes a bit by not 354 * performing a read on the status register when the 355 * register just read was a status register read that 356 * returned IXGBE_FAILED_READ_REG. It also blocks any 357 * potential recursion. 358 */ 359 if (reg == IXGBE_STATUS) { 360 ixgbe_remove_adapter(hw); 361 return; 362 } 363 value = ixgbe_read_reg(hw, IXGBE_STATUS); 364 if (value == IXGBE_FAILED_READ_REG) 365 ixgbe_remove_adapter(hw); 366 } 367 368 /** 369 * ixgbe_read_reg - Read from device register 370 * @hw: hw specific details 371 * @reg: offset of register to read 372 * 373 * Returns : value read or IXGBE_FAILED_READ_REG if removed 374 * 375 * This function is used to read device registers. It checks for device 376 * removal by confirming any read that returns all ones by checking the 377 * status register value for all ones. This function avoids reading from 378 * the hardware if a removal was previously detected in which case it 379 * returns IXGBE_FAILED_READ_REG (all ones). 380 */ 381 u32 ixgbe_read_reg(struct ixgbe_hw *hw, u32 reg) 382 { 383 u8 __iomem *reg_addr = READ_ONCE(hw->hw_addr); 384 u32 value; 385 386 if (ixgbe_removed(reg_addr)) 387 return IXGBE_FAILED_READ_REG; 388 if (unlikely(hw->phy.nw_mng_if_sel & 389 IXGBE_NW_MNG_IF_SEL_SGMII_ENABLE)) { 390 struct ixgbe_adapter *adapter; 391 int i; 392 393 for (i = 0; i < 200; ++i) { 394 value = readl(reg_addr + IXGBE_MAC_SGMII_BUSY); 395 if (likely(!value)) 396 goto writes_completed; 397 if (value == IXGBE_FAILED_READ_REG) { 398 ixgbe_remove_adapter(hw); 399 return IXGBE_FAILED_READ_REG; 400 } 401 udelay(5); 402 } 403 404 adapter = hw->back; 405 e_warn(hw, "register writes incomplete %08x\n", value); 406 } 407 408 writes_completed: 409 value = readl(reg_addr + reg); 410 if (unlikely(value == IXGBE_FAILED_READ_REG)) 411 ixgbe_check_remove(hw, reg); 412 return value; 413 } 414 415 static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev) 416 { 417 u16 value; 418 419 pci_read_config_word(pdev, PCI_VENDOR_ID, &value); 420 if (value == IXGBE_FAILED_READ_CFG_WORD) { 421 ixgbe_remove_adapter(hw); 422 return true; 423 } 424 return false; 425 } 426 427 u16 ixgbe_read_pci_cfg_word(struct ixgbe_hw *hw, u32 reg) 428 { 429 struct ixgbe_adapter *adapter = hw->back; 430 u16 value; 431 432 if (ixgbe_removed(hw->hw_addr)) 433 return IXGBE_FAILED_READ_CFG_WORD; 434 pci_read_config_word(adapter->pdev, reg, &value); 435 if (value == IXGBE_FAILED_READ_CFG_WORD && 436 ixgbe_check_cfg_remove(hw, adapter->pdev)) 437 return IXGBE_FAILED_READ_CFG_WORD; 438 return value; 439 } 440 441 #ifdef CONFIG_PCI_IOV 442 static u32 ixgbe_read_pci_cfg_dword(struct ixgbe_hw *hw, u32 reg) 443 { 444 struct ixgbe_adapter *adapter = hw->back; 445 u32 value; 446 447 if (ixgbe_removed(hw->hw_addr)) 448 return IXGBE_FAILED_READ_CFG_DWORD; 449 pci_read_config_dword(adapter->pdev, reg, &value); 450 if (value == IXGBE_FAILED_READ_CFG_DWORD && 451 ixgbe_check_cfg_remove(hw, adapter->pdev)) 452 return IXGBE_FAILED_READ_CFG_DWORD; 453 return value; 454 } 455 #endif /* CONFIG_PCI_IOV */ 456 457 void ixgbe_write_pci_cfg_word(struct ixgbe_hw *hw, u32 reg, u16 value) 458 { 459 struct ixgbe_adapter *adapter = hw->back; 460 461 if (ixgbe_removed(hw->hw_addr)) 462 return; 463 pci_write_config_word(adapter->pdev, reg, value); 464 } 465 466 static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter) 467 { 468 BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state)); 469 470 /* flush memory to make sure state is correct before next watchdog */ 471 smp_mb__before_atomic(); 472 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 473 } 474 475 struct ixgbe_reg_info { 476 u32 ofs; 477 char *name; 478 }; 479 480 static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = { 481 482 /* General Registers */ 483 {IXGBE_CTRL, "CTRL"}, 484 {IXGBE_STATUS, "STATUS"}, 485 {IXGBE_CTRL_EXT, "CTRL_EXT"}, 486 487 /* Interrupt Registers */ 488 {IXGBE_EICR, "EICR"}, 489 490 /* RX Registers */ 491 {IXGBE_SRRCTL(0), "SRRCTL"}, 492 {IXGBE_DCA_RXCTRL(0), "DRXCTL"}, 493 {IXGBE_RDLEN(0), "RDLEN"}, 494 {IXGBE_RDH(0), "RDH"}, 495 {IXGBE_RDT(0), "RDT"}, 496 {IXGBE_RXDCTL(0), "RXDCTL"}, 497 {IXGBE_RDBAL(0), "RDBAL"}, 498 {IXGBE_RDBAH(0), "RDBAH"}, 499 500 /* TX Registers */ 501 {IXGBE_TDBAL(0), "TDBAL"}, 502 {IXGBE_TDBAH(0), "TDBAH"}, 503 {IXGBE_TDLEN(0), "TDLEN"}, 504 {IXGBE_TDH(0), "TDH"}, 505 {IXGBE_TDT(0), "TDT"}, 506 {IXGBE_TXDCTL(0), "TXDCTL"}, 507 508 /* List Terminator */ 509 { .name = NULL } 510 }; 511 512 513 /* 514 * ixgbe_regdump - register printout routine 515 */ 516 static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo) 517 { 518 int i; 519 char rname[16]; 520 u32 regs[64]; 521 522 switch (reginfo->ofs) { 523 case IXGBE_SRRCTL(0): 524 for (i = 0; i < 64; i++) 525 regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i)); 526 break; 527 case IXGBE_DCA_RXCTRL(0): 528 for (i = 0; i < 64; i++) 529 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i)); 530 break; 531 case IXGBE_RDLEN(0): 532 for (i = 0; i < 64; i++) 533 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i)); 534 break; 535 case IXGBE_RDH(0): 536 for (i = 0; i < 64; i++) 537 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i)); 538 break; 539 case IXGBE_RDT(0): 540 for (i = 0; i < 64; i++) 541 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i)); 542 break; 543 case IXGBE_RXDCTL(0): 544 for (i = 0; i < 64; i++) 545 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); 546 break; 547 case IXGBE_RDBAL(0): 548 for (i = 0; i < 64; i++) 549 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i)); 550 break; 551 case IXGBE_RDBAH(0): 552 for (i = 0; i < 64; i++) 553 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i)); 554 break; 555 case IXGBE_TDBAL(0): 556 for (i = 0; i < 64; i++) 557 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i)); 558 break; 559 case IXGBE_TDBAH(0): 560 for (i = 0; i < 64; i++) 561 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i)); 562 break; 563 case IXGBE_TDLEN(0): 564 for (i = 0; i < 64; i++) 565 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i)); 566 break; 567 case IXGBE_TDH(0): 568 for (i = 0; i < 64; i++) 569 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i)); 570 break; 571 case IXGBE_TDT(0): 572 for (i = 0; i < 64; i++) 573 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i)); 574 break; 575 case IXGBE_TXDCTL(0): 576 for (i = 0; i < 64; i++) 577 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i)); 578 break; 579 default: 580 pr_info("%-15s %08x\n", 581 reginfo->name, IXGBE_READ_REG(hw, reginfo->ofs)); 582 return; 583 } 584 585 i = 0; 586 while (i < 64) { 587 int j; 588 char buf[9 * 8 + 1]; 589 char *p = buf; 590 591 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i, i + 7); 592 for (j = 0; j < 8; j++) 593 p += sprintf(p, " %08x", regs[i++]); 594 pr_err("%-15s%s\n", rname, buf); 595 } 596 597 } 598 599 static void ixgbe_print_buffer(struct ixgbe_ring *ring, int n) 600 { 601 struct ixgbe_tx_buffer *tx_buffer; 602 603 tx_buffer = &ring->tx_buffer_info[ring->next_to_clean]; 604 pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n", 605 n, ring->next_to_use, ring->next_to_clean, 606 (u64)dma_unmap_addr(tx_buffer, dma), 607 dma_unmap_len(tx_buffer, len), 608 tx_buffer->next_to_watch, 609 (u64)tx_buffer->time_stamp); 610 } 611 612 /* 613 * ixgbe_dump - Print registers, tx-rings and rx-rings 614 */ 615 static void ixgbe_dump(struct ixgbe_adapter *adapter) 616 { 617 struct net_device *netdev = adapter->netdev; 618 struct ixgbe_hw *hw = &adapter->hw; 619 struct ixgbe_reg_info *reginfo; 620 int n = 0; 621 struct ixgbe_ring *ring; 622 struct ixgbe_tx_buffer *tx_buffer; 623 union ixgbe_adv_tx_desc *tx_desc; 624 struct my_u0 { u64 a; u64 b; } *u0; 625 struct ixgbe_ring *rx_ring; 626 union ixgbe_adv_rx_desc *rx_desc; 627 struct ixgbe_rx_buffer *rx_buffer_info; 628 int i = 0; 629 630 if (!netif_msg_hw(adapter)) 631 return; 632 633 /* Print netdevice Info */ 634 if (netdev) { 635 dev_info(&adapter->pdev->dev, "Net device Info\n"); 636 pr_info("Device Name state " 637 "trans_start\n"); 638 pr_info("%-15s %016lX %016lX\n", 639 netdev->name, 640 netdev->state, 641 dev_trans_start(netdev)); 642 } 643 644 /* Print Registers */ 645 dev_info(&adapter->pdev->dev, "Register Dump\n"); 646 pr_info(" Register Name Value\n"); 647 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl; 648 reginfo->name; reginfo++) { 649 ixgbe_regdump(hw, reginfo); 650 } 651 652 /* Print TX Ring Summary */ 653 if (!netdev || !netif_running(netdev)) 654 return; 655 656 dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); 657 pr_info(" %s %s %s %s\n", 658 "Queue [NTU] [NTC] [bi(ntc)->dma ]", 659 "leng", "ntw", "timestamp"); 660 for (n = 0; n < adapter->num_tx_queues; n++) { 661 ring = adapter->tx_ring[n]; 662 ixgbe_print_buffer(ring, n); 663 } 664 665 for (n = 0; n < adapter->num_xdp_queues; n++) { 666 ring = adapter->xdp_ring[n]; 667 ixgbe_print_buffer(ring, n); 668 } 669 670 /* Print TX Rings */ 671 if (!netif_msg_tx_done(adapter)) 672 goto rx_ring_summary; 673 674 dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); 675 676 /* Transmit Descriptor Formats 677 * 678 * 82598 Advanced Transmit Descriptor 679 * +--------------------------------------------------------------+ 680 * 0 | Buffer Address [63:0] | 681 * +--------------------------------------------------------------+ 682 * 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN | 683 * +--------------------------------------------------------------+ 684 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0 685 * 686 * 82598 Advanced Transmit Descriptor (Write-Back Format) 687 * +--------------------------------------------------------------+ 688 * 0 | RSV [63:0] | 689 * +--------------------------------------------------------------+ 690 * 8 | RSV | STA | NXTSEQ | 691 * +--------------------------------------------------------------+ 692 * 63 36 35 32 31 0 693 * 694 * 82599+ Advanced Transmit Descriptor 695 * +--------------------------------------------------------------+ 696 * 0 | Buffer Address [63:0] | 697 * +--------------------------------------------------------------+ 698 * 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN | 699 * +--------------------------------------------------------------+ 700 * 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0 701 * 702 * 82599+ Advanced Transmit Descriptor (Write-Back Format) 703 * +--------------------------------------------------------------+ 704 * 0 | RSV [63:0] | 705 * +--------------------------------------------------------------+ 706 * 8 | RSV | STA | RSV | 707 * +--------------------------------------------------------------+ 708 * 63 36 35 32 31 0 709 */ 710 711 for (n = 0; n < adapter->num_tx_queues; n++) { 712 ring = adapter->tx_ring[n]; 713 pr_info("------------------------------------\n"); 714 pr_info("TX QUEUE INDEX = %d\n", ring->queue_index); 715 pr_info("------------------------------------\n"); 716 pr_info("%s%s %s %s %s %s\n", 717 "T [desc] [address 63:0 ] ", 718 "[PlPOIdStDDt Ln] [bi->dma ] ", 719 "leng", "ntw", "timestamp", "bi->skb"); 720 721 for (i = 0; ring->desc && (i < ring->count); i++) { 722 tx_desc = IXGBE_TX_DESC(ring, i); 723 tx_buffer = &ring->tx_buffer_info[i]; 724 u0 = (struct my_u0 *)tx_desc; 725 if (dma_unmap_len(tx_buffer, len) > 0) { 726 const char *ring_desc; 727 728 if (i == ring->next_to_use && 729 i == ring->next_to_clean) 730 ring_desc = " NTC/U"; 731 else if (i == ring->next_to_use) 732 ring_desc = " NTU"; 733 else if (i == ring->next_to_clean) 734 ring_desc = " NTC"; 735 else 736 ring_desc = ""; 737 pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p%s", 738 i, 739 le64_to_cpu(u0->a), 740 le64_to_cpu(u0->b), 741 (u64)dma_unmap_addr(tx_buffer, dma), 742 dma_unmap_len(tx_buffer, len), 743 tx_buffer->next_to_watch, 744 (u64)tx_buffer->time_stamp, 745 tx_buffer->skb, 746 ring_desc); 747 748 if (netif_msg_pktdata(adapter) && 749 tx_buffer->skb) 750 print_hex_dump(KERN_INFO, "", 751 DUMP_PREFIX_ADDRESS, 16, 1, 752 tx_buffer->skb->data, 753 dma_unmap_len(tx_buffer, len), 754 true); 755 } 756 } 757 } 758 759 /* Print RX Rings Summary */ 760 rx_ring_summary: 761 dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); 762 pr_info("Queue [NTU] [NTC]\n"); 763 for (n = 0; n < adapter->num_rx_queues; n++) { 764 rx_ring = adapter->rx_ring[n]; 765 pr_info("%5d %5X %5X\n", 766 n, rx_ring->next_to_use, rx_ring->next_to_clean); 767 } 768 769 /* Print RX Rings */ 770 if (!netif_msg_rx_status(adapter)) 771 return; 772 773 dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); 774 775 /* Receive Descriptor Formats 776 * 777 * 82598 Advanced Receive Descriptor (Read) Format 778 * 63 1 0 779 * +-----------------------------------------------------+ 780 * 0 | Packet Buffer Address [63:1] |A0/NSE| 781 * +----------------------------------------------+------+ 782 * 8 | Header Buffer Address [63:1] | DD | 783 * +-----------------------------------------------------+ 784 * 785 * 786 * 82598 Advanced Receive Descriptor (Write-Back) Format 787 * 788 * 63 48 47 32 31 30 21 20 16 15 4 3 0 789 * +------------------------------------------------------+ 790 * 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS | 791 * | Packet | IP | | | | Type | Type | 792 * | Checksum | Ident | | | | | | 793 * +------------------------------------------------------+ 794 * 8 | VLAN Tag | Length | Extended Error | Extended Status | 795 * +------------------------------------------------------+ 796 * 63 48 47 32 31 20 19 0 797 * 798 * 82599+ Advanced Receive Descriptor (Read) Format 799 * 63 1 0 800 * +-----------------------------------------------------+ 801 * 0 | Packet Buffer Address [63:1] |A0/NSE| 802 * +----------------------------------------------+------+ 803 * 8 | Header Buffer Address [63:1] | DD | 804 * +-----------------------------------------------------+ 805 * 806 * 807 * 82599+ Advanced Receive Descriptor (Write-Back) Format 808 * 809 * 63 48 47 32 31 30 21 20 17 16 4 3 0 810 * +------------------------------------------------------+ 811 * 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS | 812 * |/ RTT / PCoE_PARAM | | | CNT | Type | Type | 813 * |/ Flow Dir Flt ID | | | | | | 814 * +------------------------------------------------------+ 815 * 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP | 816 * +------------------------------------------------------+ 817 * 63 48 47 32 31 20 19 0 818 */ 819 820 for (n = 0; n < adapter->num_rx_queues; n++) { 821 rx_ring = adapter->rx_ring[n]; 822 pr_info("------------------------------------\n"); 823 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index); 824 pr_info("------------------------------------\n"); 825 pr_info("%s%s%s\n", 826 "R [desc] [ PktBuf A0] ", 827 "[ HeadBuf DD] [bi->dma ] [bi->skb ] ", 828 "<-- Adv Rx Read format"); 829 pr_info("%s%s%s\n", 830 "RWB[desc] [PcsmIpSHl PtRs] ", 831 "[vl er S cks ln] ---------------- [bi->skb ] ", 832 "<-- Adv Rx Write-Back format"); 833 834 for (i = 0; i < rx_ring->count; i++) { 835 const char *ring_desc; 836 837 if (i == rx_ring->next_to_use) 838 ring_desc = " NTU"; 839 else if (i == rx_ring->next_to_clean) 840 ring_desc = " NTC"; 841 else 842 ring_desc = ""; 843 844 rx_buffer_info = &rx_ring->rx_buffer_info[i]; 845 rx_desc = IXGBE_RX_DESC(rx_ring, i); 846 u0 = (struct my_u0 *)rx_desc; 847 if (rx_desc->wb.upper.length) { 848 /* Descriptor Done */ 849 pr_info("RWB[0x%03X] %016llX %016llX ---------------- %p%s\n", 850 i, 851 le64_to_cpu(u0->a), 852 le64_to_cpu(u0->b), 853 rx_buffer_info->skb, 854 ring_desc); 855 } else { 856 pr_info("R [0x%03X] %016llX %016llX %016llX %p%s\n", 857 i, 858 le64_to_cpu(u0->a), 859 le64_to_cpu(u0->b), 860 (u64)rx_buffer_info->dma, 861 rx_buffer_info->skb, 862 ring_desc); 863 864 if (netif_msg_pktdata(adapter) && 865 rx_buffer_info->dma) { 866 print_hex_dump(KERN_INFO, "", 867 DUMP_PREFIX_ADDRESS, 16, 1, 868 page_address(rx_buffer_info->page) + 869 rx_buffer_info->page_offset, 870 ixgbe_rx_bufsz(rx_ring), true); 871 } 872 } 873 } 874 } 875 } 876 877 static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) 878 { 879 u32 ctrl_ext; 880 881 /* Let firmware take over control of h/w */ 882 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); 883 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, 884 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); 885 } 886 887 static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) 888 { 889 u32 ctrl_ext; 890 891 /* Let firmware know the driver has taken over */ 892 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); 893 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, 894 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); 895 } 896 897 /** 898 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors 899 * @adapter: pointer to adapter struct 900 * @direction: 0 for Rx, 1 for Tx, -1 for other causes 901 * @queue: queue to map the corresponding interrupt to 902 * @msix_vector: the vector to map to the corresponding queue 903 * 904 */ 905 static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction, 906 u8 queue, u8 msix_vector) 907 { 908 u32 ivar, index; 909 struct ixgbe_hw *hw = &adapter->hw; 910 switch (hw->mac.type) { 911 case ixgbe_mac_82598EB: 912 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 913 if (direction == -1) 914 direction = 0; 915 index = (((direction * 64) + queue) >> 2) & 0x1F; 916 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index)); 917 ivar &= ~(0xFF << (8 * (queue & 0x3))); 918 ivar |= (msix_vector << (8 * (queue & 0x3))); 919 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar); 920 break; 921 case ixgbe_mac_82599EB: 922 case ixgbe_mac_X540: 923 case ixgbe_mac_X550: 924 case ixgbe_mac_X550EM_x: 925 case ixgbe_mac_x550em_a: 926 if (direction == -1) { 927 /* other causes */ 928 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 929 index = ((queue & 1) * 8); 930 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC); 931 ivar &= ~(0xFF << index); 932 ivar |= (msix_vector << index); 933 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar); 934 break; 935 } else { 936 /* tx or rx causes */ 937 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 938 index = ((16 * (queue & 1)) + (8 * direction)); 939 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1)); 940 ivar &= ~(0xFF << index); 941 ivar |= (msix_vector << index); 942 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar); 943 break; 944 } 945 default: 946 break; 947 } 948 } 949 950 static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter, 951 u64 qmask) 952 { 953 u32 mask; 954 955 switch (adapter->hw.mac.type) { 956 case ixgbe_mac_82598EB: 957 mask = (IXGBE_EIMS_RTX_QUEUE & qmask); 958 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask); 959 break; 960 case ixgbe_mac_82599EB: 961 case ixgbe_mac_X540: 962 case ixgbe_mac_X550: 963 case ixgbe_mac_X550EM_x: 964 case ixgbe_mac_x550em_a: 965 mask = (qmask & 0xFFFFFFFF); 966 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask); 967 mask = (qmask >> 32); 968 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask); 969 break; 970 default: 971 break; 972 } 973 } 974 975 static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter *adapter) 976 { 977 struct ixgbe_hw *hw = &adapter->hw; 978 struct ixgbe_hw_stats *hwstats = &adapter->stats; 979 int i; 980 u32 data; 981 982 if ((hw->fc.current_mode != ixgbe_fc_full) && 983 (hw->fc.current_mode != ixgbe_fc_rx_pause)) 984 return; 985 986 switch (hw->mac.type) { 987 case ixgbe_mac_82598EB: 988 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); 989 break; 990 default: 991 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); 992 } 993 hwstats->lxoffrxc += data; 994 995 /* refill credits (no tx hang) if we received xoff */ 996 if (!data) 997 return; 998 999 for (i = 0; i < adapter->num_tx_queues; i++) 1000 clear_bit(__IXGBE_HANG_CHECK_ARMED, 1001 &adapter->tx_ring[i]->state); 1002 1003 for (i = 0; i < adapter->num_xdp_queues; i++) 1004 clear_bit(__IXGBE_HANG_CHECK_ARMED, 1005 &adapter->xdp_ring[i]->state); 1006 } 1007 1008 static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter) 1009 { 1010 struct ixgbe_hw *hw = &adapter->hw; 1011 struct ixgbe_hw_stats *hwstats = &adapter->stats; 1012 u32 xoff[8] = {0}; 1013 u8 tc; 1014 int i; 1015 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 1016 1017 if (adapter->ixgbe_ieee_pfc) 1018 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 1019 1020 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED) || !pfc_en) { 1021 ixgbe_update_xoff_rx_lfc(adapter); 1022 return; 1023 } 1024 1025 /* update stats for each tc, only valid with PFC enabled */ 1026 for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) { 1027 u32 pxoffrxc; 1028 1029 switch (hw->mac.type) { 1030 case ixgbe_mac_82598EB: 1031 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); 1032 break; 1033 default: 1034 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i)); 1035 } 1036 hwstats->pxoffrxc[i] += pxoffrxc; 1037 /* Get the TC for given UP */ 1038 tc = netdev_get_prio_tc_map(adapter->netdev, i); 1039 xoff[tc] += pxoffrxc; 1040 } 1041 1042 /* disarm tx queues that have received xoff frames */ 1043 for (i = 0; i < adapter->num_tx_queues; i++) { 1044 struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; 1045 1046 tc = tx_ring->dcb_tc; 1047 if (xoff[tc]) 1048 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); 1049 } 1050 1051 for (i = 0; i < adapter->num_xdp_queues; i++) { 1052 struct ixgbe_ring *xdp_ring = adapter->xdp_ring[i]; 1053 1054 tc = xdp_ring->dcb_tc; 1055 if (xoff[tc]) 1056 clear_bit(__IXGBE_HANG_CHECK_ARMED, &xdp_ring->state); 1057 } 1058 } 1059 1060 static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring) 1061 { 1062 return ring->stats.packets; 1063 } 1064 1065 static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring) 1066 { 1067 struct ixgbe_adapter *adapter; 1068 struct ixgbe_hw *hw; 1069 u32 head, tail; 1070 1071 if (ring->l2_accel_priv) 1072 adapter = ring->l2_accel_priv->real_adapter; 1073 else 1074 adapter = netdev_priv(ring->netdev); 1075 1076 hw = &adapter->hw; 1077 head = IXGBE_READ_REG(hw, IXGBE_TDH(ring->reg_idx)); 1078 tail = IXGBE_READ_REG(hw, IXGBE_TDT(ring->reg_idx)); 1079 1080 if (head != tail) 1081 return (head < tail) ? 1082 tail - head : (tail + ring->count - head); 1083 1084 return 0; 1085 } 1086 1087 static inline bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring) 1088 { 1089 u32 tx_done = ixgbe_get_tx_completed(tx_ring); 1090 u32 tx_done_old = tx_ring->tx_stats.tx_done_old; 1091 u32 tx_pending = ixgbe_get_tx_pending(tx_ring); 1092 1093 clear_check_for_tx_hang(tx_ring); 1094 1095 /* 1096 * Check for a hung queue, but be thorough. This verifies 1097 * that a transmit has been completed since the previous 1098 * check AND there is at least one packet pending. The 1099 * ARMED bit is set to indicate a potential hang. The 1100 * bit is cleared if a pause frame is received to remove 1101 * false hang detection due to PFC or 802.3x frames. By 1102 * requiring this to fail twice we avoid races with 1103 * pfc clearing the ARMED bit and conditions where we 1104 * run the check_tx_hang logic with a transmit completion 1105 * pending but without time to complete it yet. 1106 */ 1107 if (tx_done_old == tx_done && tx_pending) 1108 /* make sure it is true for two checks in a row */ 1109 return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED, 1110 &tx_ring->state); 1111 /* update completed stats and continue */ 1112 tx_ring->tx_stats.tx_done_old = tx_done; 1113 /* reset the countdown */ 1114 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); 1115 1116 return false; 1117 } 1118 1119 /** 1120 * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout 1121 * @adapter: driver private struct 1122 **/ 1123 static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter) 1124 { 1125 1126 /* Do the reset outside of interrupt context */ 1127 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 1128 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 1129 e_warn(drv, "initiating reset due to tx timeout\n"); 1130 ixgbe_service_event_schedule(adapter); 1131 } 1132 } 1133 1134 /** 1135 * ixgbe_tx_maxrate - callback to set the maximum per-queue bitrate 1136 **/ 1137 static int ixgbe_tx_maxrate(struct net_device *netdev, 1138 int queue_index, u32 maxrate) 1139 { 1140 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1141 struct ixgbe_hw *hw = &adapter->hw; 1142 u32 bcnrc_val = ixgbe_link_mbps(adapter); 1143 1144 if (!maxrate) 1145 return 0; 1146 1147 /* Calculate the rate factor values to set */ 1148 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1149 bcnrc_val /= maxrate; 1150 1151 /* clear everything but the rate factor */ 1152 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1153 IXGBE_RTTBCNRC_RF_DEC_MASK; 1154 1155 /* enable the rate scheduler */ 1156 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1157 1158 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, queue_index); 1159 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1160 1161 return 0; 1162 } 1163 1164 /** 1165 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes 1166 * @q_vector: structure containing interrupt and ring information 1167 * @tx_ring: tx ring to clean 1168 * @napi_budget: Used to determine if we are in netpoll 1169 **/ 1170 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector, 1171 struct ixgbe_ring *tx_ring, int napi_budget) 1172 { 1173 struct ixgbe_adapter *adapter = q_vector->adapter; 1174 struct ixgbe_tx_buffer *tx_buffer; 1175 union ixgbe_adv_tx_desc *tx_desc; 1176 unsigned int total_bytes = 0, total_packets = 0; 1177 unsigned int budget = q_vector->tx.work_limit; 1178 unsigned int i = tx_ring->next_to_clean; 1179 1180 if (test_bit(__IXGBE_DOWN, &adapter->state)) 1181 return true; 1182 1183 tx_buffer = &tx_ring->tx_buffer_info[i]; 1184 tx_desc = IXGBE_TX_DESC(tx_ring, i); 1185 i -= tx_ring->count; 1186 1187 do { 1188 union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; 1189 1190 /* if next_to_watch is not set then there is no work pending */ 1191 if (!eop_desc) 1192 break; 1193 1194 /* prevent any other reads prior to eop_desc */ 1195 smp_rmb(); 1196 1197 /* if DD is not set pending work has not been completed */ 1198 if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD))) 1199 break; 1200 1201 /* clear next_to_watch to prevent false hangs */ 1202 tx_buffer->next_to_watch = NULL; 1203 1204 /* update the statistics for this packet */ 1205 total_bytes += tx_buffer->bytecount; 1206 total_packets += tx_buffer->gso_segs; 1207 1208 /* free the skb */ 1209 if (ring_is_xdp(tx_ring)) 1210 page_frag_free(tx_buffer->data); 1211 else 1212 napi_consume_skb(tx_buffer->skb, napi_budget); 1213 1214 /* unmap skb header data */ 1215 dma_unmap_single(tx_ring->dev, 1216 dma_unmap_addr(tx_buffer, dma), 1217 dma_unmap_len(tx_buffer, len), 1218 DMA_TO_DEVICE); 1219 1220 /* clear tx_buffer data */ 1221 dma_unmap_len_set(tx_buffer, len, 0); 1222 1223 /* unmap remaining buffers */ 1224 while (tx_desc != eop_desc) { 1225 tx_buffer++; 1226 tx_desc++; 1227 i++; 1228 if (unlikely(!i)) { 1229 i -= tx_ring->count; 1230 tx_buffer = tx_ring->tx_buffer_info; 1231 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 1232 } 1233 1234 /* unmap any remaining paged data */ 1235 if (dma_unmap_len(tx_buffer, len)) { 1236 dma_unmap_page(tx_ring->dev, 1237 dma_unmap_addr(tx_buffer, dma), 1238 dma_unmap_len(tx_buffer, len), 1239 DMA_TO_DEVICE); 1240 dma_unmap_len_set(tx_buffer, len, 0); 1241 } 1242 } 1243 1244 /* move us one more past the eop_desc for start of next pkt */ 1245 tx_buffer++; 1246 tx_desc++; 1247 i++; 1248 if (unlikely(!i)) { 1249 i -= tx_ring->count; 1250 tx_buffer = tx_ring->tx_buffer_info; 1251 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 1252 } 1253 1254 /* issue prefetch for next Tx descriptor */ 1255 prefetch(tx_desc); 1256 1257 /* update budget accounting */ 1258 budget--; 1259 } while (likely(budget)); 1260 1261 i += tx_ring->count; 1262 tx_ring->next_to_clean = i; 1263 u64_stats_update_begin(&tx_ring->syncp); 1264 tx_ring->stats.bytes += total_bytes; 1265 tx_ring->stats.packets += total_packets; 1266 u64_stats_update_end(&tx_ring->syncp); 1267 q_vector->tx.total_bytes += total_bytes; 1268 q_vector->tx.total_packets += total_packets; 1269 1270 if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) { 1271 /* schedule immediate reset if we believe we hung */ 1272 struct ixgbe_hw *hw = &adapter->hw; 1273 e_err(drv, "Detected Tx Unit Hang %s\n" 1274 " Tx Queue <%d>\n" 1275 " TDH, TDT <%x>, <%x>\n" 1276 " next_to_use <%x>\n" 1277 " next_to_clean <%x>\n" 1278 "tx_buffer_info[next_to_clean]\n" 1279 " time_stamp <%lx>\n" 1280 " jiffies <%lx>\n", 1281 ring_is_xdp(tx_ring) ? "(XDP)" : "", 1282 tx_ring->queue_index, 1283 IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)), 1284 IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)), 1285 tx_ring->next_to_use, i, 1286 tx_ring->tx_buffer_info[i].time_stamp, jiffies); 1287 1288 if (!ring_is_xdp(tx_ring)) 1289 netif_stop_subqueue(tx_ring->netdev, 1290 tx_ring->queue_index); 1291 1292 e_info(probe, 1293 "tx hang %d detected on queue %d, resetting adapter\n", 1294 adapter->tx_timeout_count + 1, tx_ring->queue_index); 1295 1296 /* schedule immediate reset if we believe we hung */ 1297 ixgbe_tx_timeout_reset(adapter); 1298 1299 /* the adapter is about to reset, no point in enabling stuff */ 1300 return true; 1301 } 1302 1303 if (ring_is_xdp(tx_ring)) 1304 return !!budget; 1305 1306 netdev_tx_completed_queue(txring_txq(tx_ring), 1307 total_packets, total_bytes); 1308 1309 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) 1310 if (unlikely(total_packets && netif_carrier_ok(tx_ring->netdev) && 1311 (ixgbe_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) { 1312 /* Make sure that anybody stopping the queue after this 1313 * sees the new next_to_clean. 1314 */ 1315 smp_mb(); 1316 if (__netif_subqueue_stopped(tx_ring->netdev, 1317 tx_ring->queue_index) 1318 && !test_bit(__IXGBE_DOWN, &adapter->state)) { 1319 netif_wake_subqueue(tx_ring->netdev, 1320 tx_ring->queue_index); 1321 ++tx_ring->tx_stats.restart_queue; 1322 } 1323 } 1324 1325 return !!budget; 1326 } 1327 1328 #ifdef CONFIG_IXGBE_DCA 1329 static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, 1330 struct ixgbe_ring *tx_ring, 1331 int cpu) 1332 { 1333 struct ixgbe_hw *hw = &adapter->hw; 1334 u32 txctrl = 0; 1335 u16 reg_offset; 1336 1337 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1338 txctrl = dca3_get_tag(tx_ring->dev, cpu); 1339 1340 switch (hw->mac.type) { 1341 case ixgbe_mac_82598EB: 1342 reg_offset = IXGBE_DCA_TXCTRL(tx_ring->reg_idx); 1343 break; 1344 case ixgbe_mac_82599EB: 1345 case ixgbe_mac_X540: 1346 reg_offset = IXGBE_DCA_TXCTRL_82599(tx_ring->reg_idx); 1347 txctrl <<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599; 1348 break; 1349 default: 1350 /* for unknown hardware do not write register */ 1351 return; 1352 } 1353 1354 /* 1355 * We can enable relaxed ordering for reads, but not writes when 1356 * DCA is enabled. This is due to a known issue in some chipsets 1357 * which will cause the DCA tag to be cleared. 1358 */ 1359 txctrl |= IXGBE_DCA_TXCTRL_DESC_RRO_EN | 1360 IXGBE_DCA_TXCTRL_DATA_RRO_EN | 1361 IXGBE_DCA_TXCTRL_DESC_DCA_EN; 1362 1363 IXGBE_WRITE_REG(hw, reg_offset, txctrl); 1364 } 1365 1366 static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter, 1367 struct ixgbe_ring *rx_ring, 1368 int cpu) 1369 { 1370 struct ixgbe_hw *hw = &adapter->hw; 1371 u32 rxctrl = 0; 1372 u8 reg_idx = rx_ring->reg_idx; 1373 1374 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1375 rxctrl = dca3_get_tag(rx_ring->dev, cpu); 1376 1377 switch (hw->mac.type) { 1378 case ixgbe_mac_82599EB: 1379 case ixgbe_mac_X540: 1380 rxctrl <<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599; 1381 break; 1382 default: 1383 break; 1384 } 1385 1386 /* 1387 * We can enable relaxed ordering for reads, but not writes when 1388 * DCA is enabled. This is due to a known issue in some chipsets 1389 * which will cause the DCA tag to be cleared. 1390 */ 1391 rxctrl |= IXGBE_DCA_RXCTRL_DESC_RRO_EN | 1392 IXGBE_DCA_RXCTRL_DATA_DCA_EN | 1393 IXGBE_DCA_RXCTRL_DESC_DCA_EN; 1394 1395 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl); 1396 } 1397 1398 static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector) 1399 { 1400 struct ixgbe_adapter *adapter = q_vector->adapter; 1401 struct ixgbe_ring *ring; 1402 int cpu = get_cpu(); 1403 1404 if (q_vector->cpu == cpu) 1405 goto out_no_update; 1406 1407 ixgbe_for_each_ring(ring, q_vector->tx) 1408 ixgbe_update_tx_dca(adapter, ring, cpu); 1409 1410 ixgbe_for_each_ring(ring, q_vector->rx) 1411 ixgbe_update_rx_dca(adapter, ring, cpu); 1412 1413 q_vector->cpu = cpu; 1414 out_no_update: 1415 put_cpu(); 1416 } 1417 1418 static void ixgbe_setup_dca(struct ixgbe_adapter *adapter) 1419 { 1420 int i; 1421 1422 /* always use CB2 mode, difference is masked in the CB driver */ 1423 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1424 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1425 IXGBE_DCA_CTRL_DCA_MODE_CB2); 1426 else 1427 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1428 IXGBE_DCA_CTRL_DCA_DISABLE); 1429 1430 for (i = 0; i < adapter->num_q_vectors; i++) { 1431 adapter->q_vector[i]->cpu = -1; 1432 ixgbe_update_dca(adapter->q_vector[i]); 1433 } 1434 } 1435 1436 static int __ixgbe_notify_dca(struct device *dev, void *data) 1437 { 1438 struct ixgbe_adapter *adapter = dev_get_drvdata(dev); 1439 unsigned long event = *(unsigned long *)data; 1440 1441 if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE)) 1442 return 0; 1443 1444 switch (event) { 1445 case DCA_PROVIDER_ADD: 1446 /* if we're already enabled, don't do it again */ 1447 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1448 break; 1449 if (dca_add_requester(dev) == 0) { 1450 adapter->flags |= IXGBE_FLAG_DCA_ENABLED; 1451 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1452 IXGBE_DCA_CTRL_DCA_MODE_CB2); 1453 break; 1454 } 1455 /* fall through - DCA is disabled. */ 1456 case DCA_PROVIDER_REMOVE: 1457 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { 1458 dca_remove_requester(dev); 1459 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; 1460 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1461 IXGBE_DCA_CTRL_DCA_DISABLE); 1462 } 1463 break; 1464 } 1465 1466 return 0; 1467 } 1468 1469 #endif /* CONFIG_IXGBE_DCA */ 1470 1471 #define IXGBE_RSS_L4_TYPES_MASK \ 1472 ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \ 1473 (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \ 1474 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \ 1475 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP)) 1476 1477 static inline void ixgbe_rx_hash(struct ixgbe_ring *ring, 1478 union ixgbe_adv_rx_desc *rx_desc, 1479 struct sk_buff *skb) 1480 { 1481 u16 rss_type; 1482 1483 if (!(ring->netdev->features & NETIF_F_RXHASH)) 1484 return; 1485 1486 rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) & 1487 IXGBE_RXDADV_RSSTYPE_MASK; 1488 1489 if (!rss_type) 1490 return; 1491 1492 skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), 1493 (IXGBE_RSS_L4_TYPES_MASK & (1ul << rss_type)) ? 1494 PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3); 1495 } 1496 1497 #ifdef IXGBE_FCOE 1498 /** 1499 * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type 1500 * @ring: structure containing ring specific data 1501 * @rx_desc: advanced rx descriptor 1502 * 1503 * Returns : true if it is FCoE pkt 1504 */ 1505 static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring *ring, 1506 union ixgbe_adv_rx_desc *rx_desc) 1507 { 1508 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; 1509 1510 return test_bit(__IXGBE_RX_FCOE, &ring->state) && 1511 ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) == 1512 (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE << 1513 IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT))); 1514 } 1515 1516 #endif /* IXGBE_FCOE */ 1517 /** 1518 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum 1519 * @ring: structure containing ring specific data 1520 * @rx_desc: current Rx descriptor being processed 1521 * @skb: skb currently being received and modified 1522 **/ 1523 static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring, 1524 union ixgbe_adv_rx_desc *rx_desc, 1525 struct sk_buff *skb) 1526 { 1527 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; 1528 bool encap_pkt = false; 1529 1530 skb_checksum_none_assert(skb); 1531 1532 /* Rx csum disabled */ 1533 if (!(ring->netdev->features & NETIF_F_RXCSUM)) 1534 return; 1535 1536 /* check for VXLAN and Geneve packets */ 1537 if (pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN)) { 1538 encap_pkt = true; 1539 skb->encapsulation = 1; 1540 } 1541 1542 /* if IP and error */ 1543 if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) && 1544 ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) { 1545 ring->rx_stats.csum_err++; 1546 return; 1547 } 1548 1549 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS)) 1550 return; 1551 1552 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) { 1553 /* 1554 * 82599 errata, UDP frames with a 0 checksum can be marked as 1555 * checksum errors. 1556 */ 1557 if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP)) && 1558 test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state)) 1559 return; 1560 1561 ring->rx_stats.csum_err++; 1562 return; 1563 } 1564 1565 /* It must be a TCP or UDP packet with a valid checksum */ 1566 skb->ip_summed = CHECKSUM_UNNECESSARY; 1567 if (encap_pkt) { 1568 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_OUTERIPCS)) 1569 return; 1570 1571 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_OUTERIPER)) { 1572 skb->ip_summed = CHECKSUM_NONE; 1573 return; 1574 } 1575 /* If we checked the outer header let the stack know */ 1576 skb->csum_level = 1; 1577 } 1578 } 1579 1580 static inline unsigned int ixgbe_rx_offset(struct ixgbe_ring *rx_ring) 1581 { 1582 return ring_uses_build_skb(rx_ring) ? IXGBE_SKB_PAD : 0; 1583 } 1584 1585 static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring, 1586 struct ixgbe_rx_buffer *bi) 1587 { 1588 struct page *page = bi->page; 1589 dma_addr_t dma; 1590 1591 /* since we are recycling buffers we should seldom need to alloc */ 1592 if (likely(page)) 1593 return true; 1594 1595 /* alloc new page for storage */ 1596 page = dev_alloc_pages(ixgbe_rx_pg_order(rx_ring)); 1597 if (unlikely(!page)) { 1598 rx_ring->rx_stats.alloc_rx_page_failed++; 1599 return false; 1600 } 1601 1602 /* map page for use */ 1603 dma = dma_map_page_attrs(rx_ring->dev, page, 0, 1604 ixgbe_rx_pg_size(rx_ring), 1605 DMA_FROM_DEVICE, 1606 IXGBE_RX_DMA_ATTR); 1607 1608 /* 1609 * if mapping failed free memory back to system since 1610 * there isn't much point in holding memory we can't use 1611 */ 1612 if (dma_mapping_error(rx_ring->dev, dma)) { 1613 __free_pages(page, ixgbe_rx_pg_order(rx_ring)); 1614 1615 rx_ring->rx_stats.alloc_rx_page_failed++; 1616 return false; 1617 } 1618 1619 bi->dma = dma; 1620 bi->page = page; 1621 bi->page_offset = ixgbe_rx_offset(rx_ring); 1622 bi->pagecnt_bias = 1; 1623 rx_ring->rx_stats.alloc_rx_page++; 1624 1625 return true; 1626 } 1627 1628 /** 1629 * ixgbe_alloc_rx_buffers - Replace used receive buffers 1630 * @rx_ring: ring to place buffers on 1631 * @cleaned_count: number of buffers to replace 1632 **/ 1633 void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count) 1634 { 1635 union ixgbe_adv_rx_desc *rx_desc; 1636 struct ixgbe_rx_buffer *bi; 1637 u16 i = rx_ring->next_to_use; 1638 u16 bufsz; 1639 1640 /* nothing to do */ 1641 if (!cleaned_count) 1642 return; 1643 1644 rx_desc = IXGBE_RX_DESC(rx_ring, i); 1645 bi = &rx_ring->rx_buffer_info[i]; 1646 i -= rx_ring->count; 1647 1648 bufsz = ixgbe_rx_bufsz(rx_ring); 1649 1650 do { 1651 if (!ixgbe_alloc_mapped_page(rx_ring, bi)) 1652 break; 1653 1654 /* sync the buffer for use by the device */ 1655 dma_sync_single_range_for_device(rx_ring->dev, bi->dma, 1656 bi->page_offset, bufsz, 1657 DMA_FROM_DEVICE); 1658 1659 /* 1660 * Refresh the desc even if buffer_addrs didn't change 1661 * because each write-back erases this info. 1662 */ 1663 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); 1664 1665 rx_desc++; 1666 bi++; 1667 i++; 1668 if (unlikely(!i)) { 1669 rx_desc = IXGBE_RX_DESC(rx_ring, 0); 1670 bi = rx_ring->rx_buffer_info; 1671 i -= rx_ring->count; 1672 } 1673 1674 /* clear the length for the next_to_use descriptor */ 1675 rx_desc->wb.upper.length = 0; 1676 1677 cleaned_count--; 1678 } while (cleaned_count); 1679 1680 i += rx_ring->count; 1681 1682 if (rx_ring->next_to_use != i) { 1683 rx_ring->next_to_use = i; 1684 1685 /* update next to alloc since we have filled the ring */ 1686 rx_ring->next_to_alloc = i; 1687 1688 /* Force memory writes to complete before letting h/w 1689 * know there are new descriptors to fetch. (Only 1690 * applicable for weak-ordered memory model archs, 1691 * such as IA-64). 1692 */ 1693 wmb(); 1694 writel(i, rx_ring->tail); 1695 } 1696 } 1697 1698 static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring, 1699 struct sk_buff *skb) 1700 { 1701 u16 hdr_len = skb_headlen(skb); 1702 1703 /* set gso_size to avoid messing up TCP MSS */ 1704 skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len), 1705 IXGBE_CB(skb)->append_cnt); 1706 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; 1707 } 1708 1709 static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring, 1710 struct sk_buff *skb) 1711 { 1712 /* if append_cnt is 0 then frame is not RSC */ 1713 if (!IXGBE_CB(skb)->append_cnt) 1714 return; 1715 1716 rx_ring->rx_stats.rsc_count += IXGBE_CB(skb)->append_cnt; 1717 rx_ring->rx_stats.rsc_flush++; 1718 1719 ixgbe_set_rsc_gso_size(rx_ring, skb); 1720 1721 /* gso_size is computed using append_cnt so always clear it last */ 1722 IXGBE_CB(skb)->append_cnt = 0; 1723 } 1724 1725 /** 1726 * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor 1727 * @rx_ring: rx descriptor ring packet is being transacted on 1728 * @rx_desc: pointer to the EOP Rx descriptor 1729 * @skb: pointer to current skb being populated 1730 * 1731 * This function checks the ring, descriptor, and packet information in 1732 * order to populate the hash, checksum, VLAN, timestamp, protocol, and 1733 * other fields within the skb. 1734 **/ 1735 static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring, 1736 union ixgbe_adv_rx_desc *rx_desc, 1737 struct sk_buff *skb) 1738 { 1739 struct net_device *dev = rx_ring->netdev; 1740 u32 flags = rx_ring->q_vector->adapter->flags; 1741 1742 ixgbe_update_rsc_stats(rx_ring, skb); 1743 1744 ixgbe_rx_hash(rx_ring, rx_desc, skb); 1745 1746 ixgbe_rx_checksum(rx_ring, rx_desc, skb); 1747 1748 if (unlikely(flags & IXGBE_FLAG_RX_HWTSTAMP_ENABLED)) 1749 ixgbe_ptp_rx_hwtstamp(rx_ring, rx_desc, skb); 1750 1751 if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && 1752 ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) { 1753 u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan); 1754 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); 1755 } 1756 1757 skb_record_rx_queue(skb, rx_ring->queue_index); 1758 1759 skb->protocol = eth_type_trans(skb, dev); 1760 } 1761 1762 static void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector, 1763 struct sk_buff *skb) 1764 { 1765 napi_gro_receive(&q_vector->napi, skb); 1766 } 1767 1768 /** 1769 * ixgbe_is_non_eop - process handling of non-EOP buffers 1770 * @rx_ring: Rx ring being processed 1771 * @rx_desc: Rx descriptor for current buffer 1772 * @skb: Current socket buffer containing buffer in progress 1773 * 1774 * This function updates next to clean. If the buffer is an EOP buffer 1775 * this function exits returning false, otherwise it will place the 1776 * sk_buff in the next buffer to be chained and return true indicating 1777 * that this is in fact a non-EOP buffer. 1778 **/ 1779 static bool ixgbe_is_non_eop(struct ixgbe_ring *rx_ring, 1780 union ixgbe_adv_rx_desc *rx_desc, 1781 struct sk_buff *skb) 1782 { 1783 u32 ntc = rx_ring->next_to_clean + 1; 1784 1785 /* fetch, update, and store next to clean */ 1786 ntc = (ntc < rx_ring->count) ? ntc : 0; 1787 rx_ring->next_to_clean = ntc; 1788 1789 prefetch(IXGBE_RX_DESC(rx_ring, ntc)); 1790 1791 /* update RSC append count if present */ 1792 if (ring_is_rsc_enabled(rx_ring)) { 1793 __le32 rsc_enabled = rx_desc->wb.lower.lo_dword.data & 1794 cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK); 1795 1796 if (unlikely(rsc_enabled)) { 1797 u32 rsc_cnt = le32_to_cpu(rsc_enabled); 1798 1799 rsc_cnt >>= IXGBE_RXDADV_RSCCNT_SHIFT; 1800 IXGBE_CB(skb)->append_cnt += rsc_cnt - 1; 1801 1802 /* update ntc based on RSC value */ 1803 ntc = le32_to_cpu(rx_desc->wb.upper.status_error); 1804 ntc &= IXGBE_RXDADV_NEXTP_MASK; 1805 ntc >>= IXGBE_RXDADV_NEXTP_SHIFT; 1806 } 1807 } 1808 1809 /* if we are the last buffer then there is nothing else to do */ 1810 if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))) 1811 return false; 1812 1813 /* place skb in next buffer to be received */ 1814 rx_ring->rx_buffer_info[ntc].skb = skb; 1815 rx_ring->rx_stats.non_eop_descs++; 1816 1817 return true; 1818 } 1819 1820 /** 1821 * ixgbe_pull_tail - ixgbe specific version of skb_pull_tail 1822 * @rx_ring: rx descriptor ring packet is being transacted on 1823 * @skb: pointer to current skb being adjusted 1824 * 1825 * This function is an ixgbe specific version of __pskb_pull_tail. The 1826 * main difference between this version and the original function is that 1827 * this function can make several assumptions about the state of things 1828 * that allow for significant optimizations versus the standard function. 1829 * As a result we can do things like drop a frag and maintain an accurate 1830 * truesize for the skb. 1831 */ 1832 static void ixgbe_pull_tail(struct ixgbe_ring *rx_ring, 1833 struct sk_buff *skb) 1834 { 1835 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0]; 1836 unsigned char *va; 1837 unsigned int pull_len; 1838 1839 /* 1840 * it is valid to use page_address instead of kmap since we are 1841 * working with pages allocated out of the lomem pool per 1842 * alloc_page(GFP_ATOMIC) 1843 */ 1844 va = skb_frag_address(frag); 1845 1846 /* 1847 * we need the header to contain the greater of either ETH_HLEN or 1848 * 60 bytes if the skb->len is less than 60 for skb_pad. 1849 */ 1850 pull_len = eth_get_headlen(va, IXGBE_RX_HDR_SIZE); 1851 1852 /* align pull length to size of long to optimize memcpy performance */ 1853 skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long))); 1854 1855 /* update all of the pointers */ 1856 skb_frag_size_sub(frag, pull_len); 1857 frag->page_offset += pull_len; 1858 skb->data_len -= pull_len; 1859 skb->tail += pull_len; 1860 } 1861 1862 /** 1863 * ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB 1864 * @rx_ring: rx descriptor ring packet is being transacted on 1865 * @skb: pointer to current skb being updated 1866 * 1867 * This function provides a basic DMA sync up for the first fragment of an 1868 * skb. The reason for doing this is that the first fragment cannot be 1869 * unmapped until we have reached the end of packet descriptor for a buffer 1870 * chain. 1871 */ 1872 static void ixgbe_dma_sync_frag(struct ixgbe_ring *rx_ring, 1873 struct sk_buff *skb) 1874 { 1875 /* if the page was released unmap it, else just sync our portion */ 1876 if (unlikely(IXGBE_CB(skb)->page_released)) { 1877 dma_unmap_page_attrs(rx_ring->dev, IXGBE_CB(skb)->dma, 1878 ixgbe_rx_pg_size(rx_ring), 1879 DMA_FROM_DEVICE, 1880 IXGBE_RX_DMA_ATTR); 1881 } else { 1882 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0]; 1883 1884 dma_sync_single_range_for_cpu(rx_ring->dev, 1885 IXGBE_CB(skb)->dma, 1886 frag->page_offset, 1887 skb_frag_size(frag), 1888 DMA_FROM_DEVICE); 1889 } 1890 } 1891 1892 /** 1893 * ixgbe_cleanup_headers - Correct corrupted or empty headers 1894 * @rx_ring: rx descriptor ring packet is being transacted on 1895 * @rx_desc: pointer to the EOP Rx descriptor 1896 * @skb: pointer to current skb being fixed 1897 * 1898 * Check if the skb is valid in the XDP case it will be an error pointer. 1899 * Return true in this case to abort processing and advance to next 1900 * descriptor. 1901 * 1902 * Check for corrupted packet headers caused by senders on the local L2 1903 * embedded NIC switch not setting up their Tx Descriptors right. These 1904 * should be very rare. 1905 * 1906 * Also address the case where we are pulling data in on pages only 1907 * and as such no data is present in the skb header. 1908 * 1909 * In addition if skb is not at least 60 bytes we need to pad it so that 1910 * it is large enough to qualify as a valid Ethernet frame. 1911 * 1912 * Returns true if an error was encountered and skb was freed. 1913 **/ 1914 static bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring, 1915 union ixgbe_adv_rx_desc *rx_desc, 1916 struct sk_buff *skb) 1917 { 1918 struct net_device *netdev = rx_ring->netdev; 1919 1920 /* XDP packets use error pointer so abort at this point */ 1921 if (IS_ERR(skb)) 1922 return true; 1923 1924 /* verify that the packet does not have any known errors */ 1925 if (unlikely(ixgbe_test_staterr(rx_desc, 1926 IXGBE_RXDADV_ERR_FRAME_ERR_MASK) && 1927 !(netdev->features & NETIF_F_RXALL))) { 1928 dev_kfree_skb_any(skb); 1929 return true; 1930 } 1931 1932 /* place header in linear portion of buffer */ 1933 if (!skb_headlen(skb)) 1934 ixgbe_pull_tail(rx_ring, skb); 1935 1936 #ifdef IXGBE_FCOE 1937 /* do not attempt to pad FCoE Frames as this will disrupt DDP */ 1938 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) 1939 return false; 1940 1941 #endif 1942 /* if eth_skb_pad returns an error the skb was freed */ 1943 if (eth_skb_pad(skb)) 1944 return true; 1945 1946 return false; 1947 } 1948 1949 /** 1950 * ixgbe_reuse_rx_page - page flip buffer and store it back on the ring 1951 * @rx_ring: rx descriptor ring to store buffers on 1952 * @old_buff: donor buffer to have page reused 1953 * 1954 * Synchronizes page for reuse by the adapter 1955 **/ 1956 static void ixgbe_reuse_rx_page(struct ixgbe_ring *rx_ring, 1957 struct ixgbe_rx_buffer *old_buff) 1958 { 1959 struct ixgbe_rx_buffer *new_buff; 1960 u16 nta = rx_ring->next_to_alloc; 1961 1962 new_buff = &rx_ring->rx_buffer_info[nta]; 1963 1964 /* update, and store next to alloc */ 1965 nta++; 1966 rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; 1967 1968 /* Transfer page from old buffer to new buffer. 1969 * Move each member individually to avoid possible store 1970 * forwarding stalls and unnecessary copy of skb. 1971 */ 1972 new_buff->dma = old_buff->dma; 1973 new_buff->page = old_buff->page; 1974 new_buff->page_offset = old_buff->page_offset; 1975 new_buff->pagecnt_bias = old_buff->pagecnt_bias; 1976 } 1977 1978 static inline bool ixgbe_page_is_reserved(struct page *page) 1979 { 1980 return (page_to_nid(page) != numa_mem_id()) || page_is_pfmemalloc(page); 1981 } 1982 1983 static bool ixgbe_can_reuse_rx_page(struct ixgbe_rx_buffer *rx_buffer) 1984 { 1985 unsigned int pagecnt_bias = rx_buffer->pagecnt_bias; 1986 struct page *page = rx_buffer->page; 1987 1988 /* avoid re-using remote pages */ 1989 if (unlikely(ixgbe_page_is_reserved(page))) 1990 return false; 1991 1992 #if (PAGE_SIZE < 8192) 1993 /* if we are only owner of page we can reuse it */ 1994 if (unlikely((page_ref_count(page) - pagecnt_bias) > 1)) 1995 return false; 1996 #else 1997 /* The last offset is a bit aggressive in that we assume the 1998 * worst case of FCoE being enabled and using a 3K buffer. 1999 * However this should have minimal impact as the 1K extra is 2000 * still less than one buffer in size. 2001 */ 2002 #define IXGBE_LAST_OFFSET \ 2003 (SKB_WITH_OVERHEAD(PAGE_SIZE) - IXGBE_RXBUFFER_3K) 2004 if (rx_buffer->page_offset > IXGBE_LAST_OFFSET) 2005 return false; 2006 #endif 2007 2008 /* If we have drained the page fragment pool we need to update 2009 * the pagecnt_bias and page count so that we fully restock the 2010 * number of references the driver holds. 2011 */ 2012 if (unlikely(!pagecnt_bias)) { 2013 page_ref_add(page, USHRT_MAX); 2014 rx_buffer->pagecnt_bias = USHRT_MAX; 2015 } 2016 2017 return true; 2018 } 2019 2020 /** 2021 * ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff 2022 * @rx_ring: rx descriptor ring to transact packets on 2023 * @rx_buffer: buffer containing page to add 2024 * @rx_desc: descriptor containing length of buffer written by hardware 2025 * @skb: sk_buff to place the data into 2026 * 2027 * This function will add the data contained in rx_buffer->page to the skb. 2028 * This is done either through a direct copy if the data in the buffer is 2029 * less than the skb header size, otherwise it will just attach the page as 2030 * a frag to the skb. 2031 * 2032 * The function will then update the page offset if necessary and return 2033 * true if the buffer can be reused by the adapter. 2034 **/ 2035 static void ixgbe_add_rx_frag(struct ixgbe_ring *rx_ring, 2036 struct ixgbe_rx_buffer *rx_buffer, 2037 struct sk_buff *skb, 2038 unsigned int size) 2039 { 2040 #if (PAGE_SIZE < 8192) 2041 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2042 #else 2043 unsigned int truesize = ring_uses_build_skb(rx_ring) ? 2044 SKB_DATA_ALIGN(IXGBE_SKB_PAD + size) : 2045 SKB_DATA_ALIGN(size); 2046 #endif 2047 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buffer->page, 2048 rx_buffer->page_offset, size, truesize); 2049 #if (PAGE_SIZE < 8192) 2050 rx_buffer->page_offset ^= truesize; 2051 #else 2052 rx_buffer->page_offset += truesize; 2053 #endif 2054 } 2055 2056 static struct ixgbe_rx_buffer *ixgbe_get_rx_buffer(struct ixgbe_ring *rx_ring, 2057 union ixgbe_adv_rx_desc *rx_desc, 2058 struct sk_buff **skb, 2059 const unsigned int size) 2060 { 2061 struct ixgbe_rx_buffer *rx_buffer; 2062 2063 rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; 2064 prefetchw(rx_buffer->page); 2065 *skb = rx_buffer->skb; 2066 2067 /* Delay unmapping of the first packet. It carries the header 2068 * information, HW may still access the header after the writeback. 2069 * Only unmap it when EOP is reached 2070 */ 2071 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) { 2072 if (!*skb) 2073 goto skip_sync; 2074 } else { 2075 if (*skb) 2076 ixgbe_dma_sync_frag(rx_ring, *skb); 2077 } 2078 2079 /* we are reusing so sync this buffer for CPU use */ 2080 dma_sync_single_range_for_cpu(rx_ring->dev, 2081 rx_buffer->dma, 2082 rx_buffer->page_offset, 2083 size, 2084 DMA_FROM_DEVICE); 2085 skip_sync: 2086 rx_buffer->pagecnt_bias--; 2087 2088 return rx_buffer; 2089 } 2090 2091 static void ixgbe_put_rx_buffer(struct ixgbe_ring *rx_ring, 2092 struct ixgbe_rx_buffer *rx_buffer, 2093 struct sk_buff *skb) 2094 { 2095 if (ixgbe_can_reuse_rx_page(rx_buffer)) { 2096 /* hand second half of page back to the ring */ 2097 ixgbe_reuse_rx_page(rx_ring, rx_buffer); 2098 } else { 2099 if (!IS_ERR(skb) && IXGBE_CB(skb)->dma == rx_buffer->dma) { 2100 /* the page has been released from the ring */ 2101 IXGBE_CB(skb)->page_released = true; 2102 } else { 2103 /* we are not reusing the buffer so unmap it */ 2104 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, 2105 ixgbe_rx_pg_size(rx_ring), 2106 DMA_FROM_DEVICE, 2107 IXGBE_RX_DMA_ATTR); 2108 } 2109 __page_frag_cache_drain(rx_buffer->page, 2110 rx_buffer->pagecnt_bias); 2111 } 2112 2113 /* clear contents of rx_buffer */ 2114 rx_buffer->page = NULL; 2115 rx_buffer->skb = NULL; 2116 } 2117 2118 static struct sk_buff *ixgbe_construct_skb(struct ixgbe_ring *rx_ring, 2119 struct ixgbe_rx_buffer *rx_buffer, 2120 struct xdp_buff *xdp, 2121 union ixgbe_adv_rx_desc *rx_desc) 2122 { 2123 unsigned int size = xdp->data_end - xdp->data; 2124 #if (PAGE_SIZE < 8192) 2125 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2126 #else 2127 unsigned int truesize = SKB_DATA_ALIGN(xdp->data_end - 2128 xdp->data_hard_start); 2129 #endif 2130 struct sk_buff *skb; 2131 2132 /* prefetch first cache line of first page */ 2133 prefetch(xdp->data); 2134 #if L1_CACHE_BYTES < 128 2135 prefetch(xdp->data + L1_CACHE_BYTES); 2136 #endif 2137 /* Note, we get here by enabling legacy-rx via: 2138 * 2139 * ethtool --set-priv-flags <dev> legacy-rx on 2140 * 2141 * In this mode, we currently get 0 extra XDP headroom as 2142 * opposed to having legacy-rx off, where we process XDP 2143 * packets going to stack via ixgbe_build_skb(). The latter 2144 * provides us currently with 192 bytes of headroom. 2145 * 2146 * For ixgbe_construct_skb() mode it means that the 2147 * xdp->data_meta will always point to xdp->data, since 2148 * the helper cannot expand the head. Should this ever 2149 * change in future for legacy-rx mode on, then lets also 2150 * add xdp->data_meta handling here. 2151 */ 2152 2153 /* allocate a skb to store the frags */ 2154 skb = napi_alloc_skb(&rx_ring->q_vector->napi, IXGBE_RX_HDR_SIZE); 2155 if (unlikely(!skb)) 2156 return NULL; 2157 2158 if (size > IXGBE_RX_HDR_SIZE) { 2159 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) 2160 IXGBE_CB(skb)->dma = rx_buffer->dma; 2161 2162 skb_add_rx_frag(skb, 0, rx_buffer->page, 2163 xdp->data - page_address(rx_buffer->page), 2164 size, truesize); 2165 #if (PAGE_SIZE < 8192) 2166 rx_buffer->page_offset ^= truesize; 2167 #else 2168 rx_buffer->page_offset += truesize; 2169 #endif 2170 } else { 2171 memcpy(__skb_put(skb, size), 2172 xdp->data, ALIGN(size, sizeof(long))); 2173 rx_buffer->pagecnt_bias++; 2174 } 2175 2176 return skb; 2177 } 2178 2179 static struct sk_buff *ixgbe_build_skb(struct ixgbe_ring *rx_ring, 2180 struct ixgbe_rx_buffer *rx_buffer, 2181 struct xdp_buff *xdp, 2182 union ixgbe_adv_rx_desc *rx_desc) 2183 { 2184 unsigned int metasize = xdp->data - xdp->data_meta; 2185 #if (PAGE_SIZE < 8192) 2186 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2187 #else 2188 unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + 2189 SKB_DATA_ALIGN(xdp->data_end - 2190 xdp->data_hard_start); 2191 #endif 2192 struct sk_buff *skb; 2193 2194 /* Prefetch first cache line of first page. If xdp->data_meta 2195 * is unused, this points extactly as xdp->data, otherwise we 2196 * likely have a consumer accessing first few bytes of meta 2197 * data, and then actual data. 2198 */ 2199 prefetch(xdp->data_meta); 2200 #if L1_CACHE_BYTES < 128 2201 prefetch(xdp->data_meta + L1_CACHE_BYTES); 2202 #endif 2203 2204 /* build an skb to around the page buffer */ 2205 skb = build_skb(xdp->data_hard_start, truesize); 2206 if (unlikely(!skb)) 2207 return NULL; 2208 2209 /* update pointers within the skb to store the data */ 2210 skb_reserve(skb, xdp->data - xdp->data_hard_start); 2211 __skb_put(skb, xdp->data_end - xdp->data); 2212 if (metasize) 2213 skb_metadata_set(skb, metasize); 2214 2215 /* record DMA address if this is the start of a chain of buffers */ 2216 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) 2217 IXGBE_CB(skb)->dma = rx_buffer->dma; 2218 2219 /* update buffer offset */ 2220 #if (PAGE_SIZE < 8192) 2221 rx_buffer->page_offset ^= truesize; 2222 #else 2223 rx_buffer->page_offset += truesize; 2224 #endif 2225 2226 return skb; 2227 } 2228 2229 #define IXGBE_XDP_PASS 0 2230 #define IXGBE_XDP_CONSUMED 1 2231 #define IXGBE_XDP_TX 2 2232 2233 static int ixgbe_xmit_xdp_ring(struct ixgbe_adapter *adapter, 2234 struct xdp_buff *xdp); 2235 2236 static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter, 2237 struct ixgbe_ring *rx_ring, 2238 struct xdp_buff *xdp) 2239 { 2240 int err, result = IXGBE_XDP_PASS; 2241 struct bpf_prog *xdp_prog; 2242 u32 act; 2243 2244 rcu_read_lock(); 2245 xdp_prog = READ_ONCE(rx_ring->xdp_prog); 2246 2247 if (!xdp_prog) 2248 goto xdp_out; 2249 2250 act = bpf_prog_run_xdp(xdp_prog, xdp); 2251 switch (act) { 2252 case XDP_PASS: 2253 break; 2254 case XDP_TX: 2255 result = ixgbe_xmit_xdp_ring(adapter, xdp); 2256 break; 2257 case XDP_REDIRECT: 2258 err = xdp_do_redirect(adapter->netdev, xdp, xdp_prog); 2259 if (!err) 2260 result = IXGBE_XDP_TX; 2261 else 2262 result = IXGBE_XDP_CONSUMED; 2263 break; 2264 default: 2265 bpf_warn_invalid_xdp_action(act); 2266 /* fallthrough */ 2267 case XDP_ABORTED: 2268 trace_xdp_exception(rx_ring->netdev, xdp_prog, act); 2269 /* fallthrough -- handle aborts by dropping packet */ 2270 case XDP_DROP: 2271 result = IXGBE_XDP_CONSUMED; 2272 break; 2273 } 2274 xdp_out: 2275 rcu_read_unlock(); 2276 return ERR_PTR(-result); 2277 } 2278 2279 static void ixgbe_rx_buffer_flip(struct ixgbe_ring *rx_ring, 2280 struct ixgbe_rx_buffer *rx_buffer, 2281 unsigned int size) 2282 { 2283 #if (PAGE_SIZE < 8192) 2284 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2285 2286 rx_buffer->page_offset ^= truesize; 2287 #else 2288 unsigned int truesize = ring_uses_build_skb(rx_ring) ? 2289 SKB_DATA_ALIGN(IXGBE_SKB_PAD + size) : 2290 SKB_DATA_ALIGN(size); 2291 2292 rx_buffer->page_offset += truesize; 2293 #endif 2294 } 2295 2296 /** 2297 * ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf 2298 * @q_vector: structure containing interrupt and ring information 2299 * @rx_ring: rx descriptor ring to transact packets on 2300 * @budget: Total limit on number of packets to process 2301 * 2302 * This function provides a "bounce buffer" approach to Rx interrupt 2303 * processing. The advantage to this is that on systems that have 2304 * expensive overhead for IOMMU access this provides a means of avoiding 2305 * it by maintaining the mapping of the page to the syste. 2306 * 2307 * Returns amount of work completed 2308 **/ 2309 static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, 2310 struct ixgbe_ring *rx_ring, 2311 const int budget) 2312 { 2313 unsigned int total_rx_bytes = 0, total_rx_packets = 0; 2314 struct ixgbe_adapter *adapter = q_vector->adapter; 2315 #ifdef IXGBE_FCOE 2316 int ddp_bytes; 2317 unsigned int mss = 0; 2318 #endif /* IXGBE_FCOE */ 2319 u16 cleaned_count = ixgbe_desc_unused(rx_ring); 2320 bool xdp_xmit = false; 2321 2322 while (likely(total_rx_packets < budget)) { 2323 union ixgbe_adv_rx_desc *rx_desc; 2324 struct ixgbe_rx_buffer *rx_buffer; 2325 struct sk_buff *skb; 2326 struct xdp_buff xdp; 2327 unsigned int size; 2328 2329 /* return some buffers to hardware, one at a time is too slow */ 2330 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { 2331 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count); 2332 cleaned_count = 0; 2333 } 2334 2335 rx_desc = IXGBE_RX_DESC(rx_ring, rx_ring->next_to_clean); 2336 size = le16_to_cpu(rx_desc->wb.upper.length); 2337 if (!size) 2338 break; 2339 2340 /* This memory barrier is needed to keep us from reading 2341 * any other fields out of the rx_desc until we know the 2342 * descriptor has been written back 2343 */ 2344 dma_rmb(); 2345 2346 rx_buffer = ixgbe_get_rx_buffer(rx_ring, rx_desc, &skb, size); 2347 2348 /* retrieve a buffer from the ring */ 2349 if (!skb) { 2350 xdp.data = page_address(rx_buffer->page) + 2351 rx_buffer->page_offset; 2352 xdp.data_meta = xdp.data; 2353 xdp.data_hard_start = xdp.data - 2354 ixgbe_rx_offset(rx_ring); 2355 xdp.data_end = xdp.data + size; 2356 2357 skb = ixgbe_run_xdp(adapter, rx_ring, &xdp); 2358 } 2359 2360 if (IS_ERR(skb)) { 2361 if (PTR_ERR(skb) == -IXGBE_XDP_TX) { 2362 xdp_xmit = true; 2363 ixgbe_rx_buffer_flip(rx_ring, rx_buffer, size); 2364 } else { 2365 rx_buffer->pagecnt_bias++; 2366 } 2367 total_rx_packets++; 2368 total_rx_bytes += size; 2369 } else if (skb) { 2370 ixgbe_add_rx_frag(rx_ring, rx_buffer, skb, size); 2371 } else if (ring_uses_build_skb(rx_ring)) { 2372 skb = ixgbe_build_skb(rx_ring, rx_buffer, 2373 &xdp, rx_desc); 2374 } else { 2375 skb = ixgbe_construct_skb(rx_ring, rx_buffer, 2376 &xdp, rx_desc); 2377 } 2378 2379 /* exit if we failed to retrieve a buffer */ 2380 if (!skb) { 2381 rx_ring->rx_stats.alloc_rx_buff_failed++; 2382 rx_buffer->pagecnt_bias++; 2383 break; 2384 } 2385 2386 ixgbe_put_rx_buffer(rx_ring, rx_buffer, skb); 2387 cleaned_count++; 2388 2389 /* place incomplete frames back on ring for completion */ 2390 if (ixgbe_is_non_eop(rx_ring, rx_desc, skb)) 2391 continue; 2392 2393 /* verify the packet layout is correct */ 2394 if (ixgbe_cleanup_headers(rx_ring, rx_desc, skb)) 2395 continue; 2396 2397 /* probably a little skewed due to removing CRC */ 2398 total_rx_bytes += skb->len; 2399 2400 /* populate checksum, timestamp, VLAN, and protocol */ 2401 ixgbe_process_skb_fields(rx_ring, rx_desc, skb); 2402 2403 #ifdef IXGBE_FCOE 2404 /* if ddp, not passing to ULD unless for FCP_RSP or error */ 2405 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) { 2406 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb); 2407 /* include DDPed FCoE data */ 2408 if (ddp_bytes > 0) { 2409 if (!mss) { 2410 mss = rx_ring->netdev->mtu - 2411 sizeof(struct fcoe_hdr) - 2412 sizeof(struct fc_frame_header) - 2413 sizeof(struct fcoe_crc_eof); 2414 if (mss > 512) 2415 mss &= ~511; 2416 } 2417 total_rx_bytes += ddp_bytes; 2418 total_rx_packets += DIV_ROUND_UP(ddp_bytes, 2419 mss); 2420 } 2421 if (!ddp_bytes) { 2422 dev_kfree_skb_any(skb); 2423 continue; 2424 } 2425 } 2426 2427 #endif /* IXGBE_FCOE */ 2428 ixgbe_rx_skb(q_vector, skb); 2429 2430 /* update budget accounting */ 2431 total_rx_packets++; 2432 } 2433 2434 if (xdp_xmit) { 2435 struct ixgbe_ring *ring = adapter->xdp_ring[smp_processor_id()]; 2436 2437 /* Force memory writes to complete before letting h/w 2438 * know there are new descriptors to fetch. 2439 */ 2440 wmb(); 2441 writel(ring->next_to_use, ring->tail); 2442 2443 xdp_do_flush_map(); 2444 } 2445 2446 u64_stats_update_begin(&rx_ring->syncp); 2447 rx_ring->stats.packets += total_rx_packets; 2448 rx_ring->stats.bytes += total_rx_bytes; 2449 u64_stats_update_end(&rx_ring->syncp); 2450 q_vector->rx.total_packets += total_rx_packets; 2451 q_vector->rx.total_bytes += total_rx_bytes; 2452 2453 return total_rx_packets; 2454 } 2455 2456 /** 2457 * ixgbe_configure_msix - Configure MSI-X hardware 2458 * @adapter: board private structure 2459 * 2460 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X 2461 * interrupts. 2462 **/ 2463 static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) 2464 { 2465 struct ixgbe_q_vector *q_vector; 2466 int v_idx; 2467 u32 mask; 2468 2469 /* Populate MSIX to EITR Select */ 2470 if (adapter->num_vfs > 32) { 2471 u32 eitrsel = BIT(adapter->num_vfs - 32) - 1; 2472 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel); 2473 } 2474 2475 /* 2476 * Populate the IVAR table and set the ITR values to the 2477 * corresponding register. 2478 */ 2479 for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { 2480 struct ixgbe_ring *ring; 2481 q_vector = adapter->q_vector[v_idx]; 2482 2483 ixgbe_for_each_ring(ring, q_vector->rx) 2484 ixgbe_set_ivar(adapter, 0, ring->reg_idx, v_idx); 2485 2486 ixgbe_for_each_ring(ring, q_vector->tx) 2487 ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx); 2488 2489 ixgbe_write_eitr(q_vector); 2490 } 2491 2492 switch (adapter->hw.mac.type) { 2493 case ixgbe_mac_82598EB: 2494 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX, 2495 v_idx); 2496 break; 2497 case ixgbe_mac_82599EB: 2498 case ixgbe_mac_X540: 2499 case ixgbe_mac_X550: 2500 case ixgbe_mac_X550EM_x: 2501 case ixgbe_mac_x550em_a: 2502 ixgbe_set_ivar(adapter, -1, 1, v_idx); 2503 break; 2504 default: 2505 break; 2506 } 2507 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950); 2508 2509 /* set up to autoclear timer, and the vectors */ 2510 mask = IXGBE_EIMS_ENABLE_MASK; 2511 mask &= ~(IXGBE_EIMS_OTHER | 2512 IXGBE_EIMS_MAILBOX | 2513 IXGBE_EIMS_LSC); 2514 2515 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); 2516 } 2517 2518 enum latency_range { 2519 lowest_latency = 0, 2520 low_latency = 1, 2521 bulk_latency = 2, 2522 latency_invalid = 255 2523 }; 2524 2525 /** 2526 * ixgbe_update_itr - update the dynamic ITR value based on statistics 2527 * @q_vector: structure containing interrupt and ring information 2528 * @ring_container: structure containing ring performance data 2529 * 2530 * Stores a new ITR value based on packets and byte 2531 * counts during the last interrupt. The advantage of per interrupt 2532 * computation is faster updates and more accurate ITR for the current 2533 * traffic pattern. Constants in this function were computed 2534 * based on theoretical maximum wire speed and thresholds were set based 2535 * on testing data as well as attempting to minimize response time 2536 * while increasing bulk throughput. 2537 * this functionality is controlled by the InterruptThrottleRate module 2538 * parameter (see ixgbe_param.c) 2539 **/ 2540 static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector, 2541 struct ixgbe_ring_container *ring_container) 2542 { 2543 unsigned int itr = IXGBE_ITR_ADAPTIVE_MIN_USECS | 2544 IXGBE_ITR_ADAPTIVE_LATENCY; 2545 unsigned int avg_wire_size, packets, bytes; 2546 unsigned long next_update = jiffies; 2547 2548 /* If we don't have any rings just leave ourselves set for maximum 2549 * possible latency so we take ourselves out of the equation. 2550 */ 2551 if (!ring_container->ring) 2552 return; 2553 2554 /* If we didn't update within up to 1 - 2 jiffies we can assume 2555 * that either packets are coming in so slow there hasn't been 2556 * any work, or that there is so much work that NAPI is dealing 2557 * with interrupt moderation and we don't need to do anything. 2558 */ 2559 if (time_after(next_update, ring_container->next_update)) 2560 goto clear_counts; 2561 2562 packets = ring_container->total_packets; 2563 2564 /* We have no packets to actually measure against. This means 2565 * either one of the other queues on this vector is active or 2566 * we are a Tx queue doing TSO with too high of an interrupt rate. 2567 * 2568 * When this occurs just tick up our delay by the minimum value 2569 * and hope that this extra delay will prevent us from being called 2570 * without any work on our queue. 2571 */ 2572 if (!packets) { 2573 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; 2574 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) 2575 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; 2576 itr += ring_container->itr & IXGBE_ITR_ADAPTIVE_LATENCY; 2577 goto clear_counts; 2578 } 2579 2580 bytes = ring_container->total_bytes; 2581 2582 /* If packets are less than 4 or bytes are less than 9000 assume 2583 * insufficient data to use bulk rate limiting approach. We are 2584 * likely latency driven. 2585 */ 2586 if (packets < 4 && bytes < 9000) { 2587 itr = IXGBE_ITR_ADAPTIVE_LATENCY; 2588 goto adjust_by_size; 2589 } 2590 2591 /* Between 4 and 48 we can assume that our current interrupt delay 2592 * is only slightly too low. As such we should increase it by a small 2593 * fixed amount. 2594 */ 2595 if (packets < 48) { 2596 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; 2597 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) 2598 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; 2599 goto clear_counts; 2600 } 2601 2602 /* Between 48 and 96 is our "goldilocks" zone where we are working 2603 * out "just right". Just report that our current ITR is good for us. 2604 */ 2605 if (packets < 96) { 2606 itr = q_vector->itr >> 2; 2607 goto clear_counts; 2608 } 2609 2610 /* If packet count is 96 or greater we are likely looking at a slight 2611 * overrun of the delay we want. Try halving our delay to see if that 2612 * will cut the number of packets in half per interrupt. 2613 */ 2614 if (packets < 256) { 2615 itr = q_vector->itr >> 3; 2616 if (itr < IXGBE_ITR_ADAPTIVE_MIN_USECS) 2617 itr = IXGBE_ITR_ADAPTIVE_MIN_USECS; 2618 goto clear_counts; 2619 } 2620 2621 /* The paths below assume we are dealing with a bulk ITR since number 2622 * of packets is 256 or greater. We are just going to have to compute 2623 * a value and try to bring the count under control, though for smaller 2624 * packet sizes there isn't much we can do as NAPI polling will likely 2625 * be kicking in sooner rather than later. 2626 */ 2627 itr = IXGBE_ITR_ADAPTIVE_BULK; 2628 2629 adjust_by_size: 2630 /* If packet counts are 256 or greater we can assume we have a gross 2631 * overestimation of what the rate should be. Instead of trying to fine 2632 * tune it just use the formula below to try and dial in an exact value 2633 * give the current packet size of the frame. 2634 */ 2635 avg_wire_size = bytes / packets; 2636 2637 /* The following is a crude approximation of: 2638 * wmem_default / (size + overhead) = desired_pkts_per_int 2639 * rate / bits_per_byte / (size + ethernet overhead) = pkt_rate 2640 * (desired_pkt_rate / pkt_rate) * usecs_per_sec = ITR value 2641 * 2642 * Assuming wmem_default is 212992 and overhead is 640 bytes per 2643 * packet, (256 skb, 64 headroom, 320 shared info), we can reduce the 2644 * formula down to 2645 * 2646 * (170 * (size + 24)) / (size + 640) = ITR 2647 * 2648 * We first do some math on the packet size and then finally bitshift 2649 * by 8 after rounding up. We also have to account for PCIe link speed 2650 * difference as ITR scales based on this. 2651 */ 2652 if (avg_wire_size <= 60) { 2653 /* Start at 50k ints/sec */ 2654 avg_wire_size = 5120; 2655 } else if (avg_wire_size <= 316) { 2656 /* 50K ints/sec to 16K ints/sec */ 2657 avg_wire_size *= 40; 2658 avg_wire_size += 2720; 2659 } else if (avg_wire_size <= 1084) { 2660 /* 16K ints/sec to 9.2K ints/sec */ 2661 avg_wire_size *= 15; 2662 avg_wire_size += 11452; 2663 } else if (avg_wire_size <= 1980) { 2664 /* 9.2K ints/sec to 8K ints/sec */ 2665 avg_wire_size *= 5; 2666 avg_wire_size += 22420; 2667 } else { 2668 /* plateau at a limit of 8K ints/sec */ 2669 avg_wire_size = 32256; 2670 } 2671 2672 /* If we are in low latency mode half our delay which doubles the rate 2673 * to somewhere between 100K to 16K ints/sec 2674 */ 2675 if (itr & IXGBE_ITR_ADAPTIVE_LATENCY) 2676 avg_wire_size >>= 1; 2677 2678 /* Resultant value is 256 times larger than it needs to be. This 2679 * gives us room to adjust the value as needed to either increase 2680 * or decrease the value based on link speeds of 10G, 2.5G, 1G, etc. 2681 * 2682 * Use addition as we have already recorded the new latency flag 2683 * for the ITR value. 2684 */ 2685 switch (q_vector->adapter->link_speed) { 2686 case IXGBE_LINK_SPEED_10GB_FULL: 2687 case IXGBE_LINK_SPEED_100_FULL: 2688 default: 2689 itr += DIV_ROUND_UP(avg_wire_size, 2690 IXGBE_ITR_ADAPTIVE_MIN_INC * 256) * 2691 IXGBE_ITR_ADAPTIVE_MIN_INC; 2692 break; 2693 case IXGBE_LINK_SPEED_2_5GB_FULL: 2694 case IXGBE_LINK_SPEED_1GB_FULL: 2695 case IXGBE_LINK_SPEED_10_FULL: 2696 itr += DIV_ROUND_UP(avg_wire_size, 2697 IXGBE_ITR_ADAPTIVE_MIN_INC * 64) * 2698 IXGBE_ITR_ADAPTIVE_MIN_INC; 2699 break; 2700 } 2701 2702 clear_counts: 2703 /* write back value */ 2704 ring_container->itr = itr; 2705 2706 /* next update should occur within next jiffy */ 2707 ring_container->next_update = next_update + 1; 2708 2709 ring_container->total_bytes = 0; 2710 ring_container->total_packets = 0; 2711 } 2712 2713 /** 2714 * ixgbe_write_eitr - write EITR register in hardware specific way 2715 * @q_vector: structure containing interrupt and ring information 2716 * 2717 * This function is made to be called by ethtool and by the driver 2718 * when it needs to update EITR registers at runtime. Hardware 2719 * specific quirks/differences are taken care of here. 2720 */ 2721 void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector) 2722 { 2723 struct ixgbe_adapter *adapter = q_vector->adapter; 2724 struct ixgbe_hw *hw = &adapter->hw; 2725 int v_idx = q_vector->v_idx; 2726 u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR; 2727 2728 switch (adapter->hw.mac.type) { 2729 case ixgbe_mac_82598EB: 2730 /* must write high and low 16 bits to reset counter */ 2731 itr_reg |= (itr_reg << 16); 2732 break; 2733 case ixgbe_mac_82599EB: 2734 case ixgbe_mac_X540: 2735 case ixgbe_mac_X550: 2736 case ixgbe_mac_X550EM_x: 2737 case ixgbe_mac_x550em_a: 2738 /* 2739 * set the WDIS bit to not clear the timer bits and cause an 2740 * immediate assertion of the interrupt 2741 */ 2742 itr_reg |= IXGBE_EITR_CNT_WDIS; 2743 break; 2744 default: 2745 break; 2746 } 2747 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg); 2748 } 2749 2750 static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector) 2751 { 2752 u32 new_itr; 2753 2754 ixgbe_update_itr(q_vector, &q_vector->tx); 2755 ixgbe_update_itr(q_vector, &q_vector->rx); 2756 2757 /* use the smallest value of new ITR delay calculations */ 2758 new_itr = min(q_vector->rx.itr, q_vector->tx.itr); 2759 2760 /* Clear latency flag if set, shift into correct position */ 2761 new_itr &= ~IXGBE_ITR_ADAPTIVE_LATENCY; 2762 new_itr <<= 2; 2763 2764 if (new_itr != q_vector->itr) { 2765 /* save the algorithm value here */ 2766 q_vector->itr = new_itr; 2767 2768 ixgbe_write_eitr(q_vector); 2769 } 2770 } 2771 2772 /** 2773 * ixgbe_check_overtemp_subtask - check for over temperature 2774 * @adapter: pointer to adapter 2775 **/ 2776 static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter) 2777 { 2778 struct ixgbe_hw *hw = &adapter->hw; 2779 u32 eicr = adapter->interrupt_event; 2780 s32 rc; 2781 2782 if (test_bit(__IXGBE_DOWN, &adapter->state)) 2783 return; 2784 2785 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT)) 2786 return; 2787 2788 adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2789 2790 switch (hw->device_id) { 2791 case IXGBE_DEV_ID_82599_T3_LOM: 2792 /* 2793 * Since the warning interrupt is for both ports 2794 * we don't have to check if: 2795 * - This interrupt wasn't for our port. 2796 * - We may have missed the interrupt so always have to 2797 * check if we got a LSC 2798 */ 2799 if (!(eicr & IXGBE_EICR_GPI_SDP0_8259X) && 2800 !(eicr & IXGBE_EICR_LSC)) 2801 return; 2802 2803 if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) { 2804 u32 speed; 2805 bool link_up = false; 2806 2807 hw->mac.ops.check_link(hw, &speed, &link_up, false); 2808 2809 if (link_up) 2810 return; 2811 } 2812 2813 /* Check if this is not due to overtemp */ 2814 if (hw->phy.ops.check_overtemp(hw) != IXGBE_ERR_OVERTEMP) 2815 return; 2816 2817 break; 2818 case IXGBE_DEV_ID_X550EM_A_1G_T: 2819 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 2820 rc = hw->phy.ops.check_overtemp(hw); 2821 if (rc != IXGBE_ERR_OVERTEMP) 2822 return; 2823 break; 2824 default: 2825 if (adapter->hw.mac.type >= ixgbe_mac_X540) 2826 return; 2827 if (!(eicr & IXGBE_EICR_GPI_SDP0(hw))) 2828 return; 2829 break; 2830 } 2831 e_crit(drv, "%s\n", ixgbe_overheat_msg); 2832 2833 adapter->interrupt_event = 0; 2834 } 2835 2836 static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr) 2837 { 2838 struct ixgbe_hw *hw = &adapter->hw; 2839 2840 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) && 2841 (eicr & IXGBE_EICR_GPI_SDP1(hw))) { 2842 e_crit(probe, "Fan has stopped, replace the adapter\n"); 2843 /* write to clear the interrupt */ 2844 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); 2845 } 2846 } 2847 2848 static void ixgbe_check_overtemp_event(struct ixgbe_adapter *adapter, u32 eicr) 2849 { 2850 struct ixgbe_hw *hw = &adapter->hw; 2851 2852 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)) 2853 return; 2854 2855 switch (adapter->hw.mac.type) { 2856 case ixgbe_mac_82599EB: 2857 /* 2858 * Need to check link state so complete overtemp check 2859 * on service task 2860 */ 2861 if (((eicr & IXGBE_EICR_GPI_SDP0(hw)) || 2862 (eicr & IXGBE_EICR_LSC)) && 2863 (!test_bit(__IXGBE_DOWN, &adapter->state))) { 2864 adapter->interrupt_event = eicr; 2865 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2866 ixgbe_service_event_schedule(adapter); 2867 return; 2868 } 2869 return; 2870 case ixgbe_mac_x550em_a: 2871 if (eicr & IXGBE_EICR_GPI_SDP0_X550EM_a) { 2872 adapter->interrupt_event = eicr; 2873 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2874 ixgbe_service_event_schedule(adapter); 2875 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 2876 IXGBE_EICR_GPI_SDP0_X550EM_a); 2877 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICR, 2878 IXGBE_EICR_GPI_SDP0_X550EM_a); 2879 } 2880 return; 2881 case ixgbe_mac_X550: 2882 case ixgbe_mac_X540: 2883 if (!(eicr & IXGBE_EICR_TS)) 2884 return; 2885 break; 2886 default: 2887 return; 2888 } 2889 2890 e_crit(drv, "%s\n", ixgbe_overheat_msg); 2891 } 2892 2893 static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw) 2894 { 2895 switch (hw->mac.type) { 2896 case ixgbe_mac_82598EB: 2897 if (hw->phy.type == ixgbe_phy_nl) 2898 return true; 2899 return false; 2900 case ixgbe_mac_82599EB: 2901 case ixgbe_mac_X550EM_x: 2902 case ixgbe_mac_x550em_a: 2903 switch (hw->mac.ops.get_media_type(hw)) { 2904 case ixgbe_media_type_fiber: 2905 case ixgbe_media_type_fiber_qsfp: 2906 return true; 2907 default: 2908 return false; 2909 } 2910 default: 2911 return false; 2912 } 2913 } 2914 2915 static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr) 2916 { 2917 struct ixgbe_hw *hw = &adapter->hw; 2918 u32 eicr_mask = IXGBE_EICR_GPI_SDP2(hw); 2919 2920 if (!ixgbe_is_sfp(hw)) 2921 return; 2922 2923 /* Later MAC's use different SDP */ 2924 if (hw->mac.type >= ixgbe_mac_X540) 2925 eicr_mask = IXGBE_EICR_GPI_SDP0_X540; 2926 2927 if (eicr & eicr_mask) { 2928 /* Clear the interrupt */ 2929 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr_mask); 2930 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2931 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 2932 adapter->sfp_poll_time = 0; 2933 ixgbe_service_event_schedule(adapter); 2934 } 2935 } 2936 2937 if (adapter->hw.mac.type == ixgbe_mac_82599EB && 2938 (eicr & IXGBE_EICR_GPI_SDP1(hw))) { 2939 /* Clear the interrupt */ 2940 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); 2941 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2942 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; 2943 ixgbe_service_event_schedule(adapter); 2944 } 2945 } 2946 } 2947 2948 static void ixgbe_check_lsc(struct ixgbe_adapter *adapter) 2949 { 2950 struct ixgbe_hw *hw = &adapter->hw; 2951 2952 adapter->lsc_int++; 2953 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 2954 adapter->link_check_timeout = jiffies; 2955 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2956 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC); 2957 IXGBE_WRITE_FLUSH(hw); 2958 ixgbe_service_event_schedule(adapter); 2959 } 2960 } 2961 2962 static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter, 2963 u64 qmask) 2964 { 2965 u32 mask; 2966 struct ixgbe_hw *hw = &adapter->hw; 2967 2968 switch (hw->mac.type) { 2969 case ixgbe_mac_82598EB: 2970 mask = (IXGBE_EIMS_RTX_QUEUE & qmask); 2971 IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask); 2972 break; 2973 case ixgbe_mac_82599EB: 2974 case ixgbe_mac_X540: 2975 case ixgbe_mac_X550: 2976 case ixgbe_mac_X550EM_x: 2977 case ixgbe_mac_x550em_a: 2978 mask = (qmask & 0xFFFFFFFF); 2979 if (mask) 2980 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask); 2981 mask = (qmask >> 32); 2982 if (mask) 2983 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask); 2984 break; 2985 default: 2986 break; 2987 } 2988 /* skip the flush */ 2989 } 2990 2991 static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter, 2992 u64 qmask) 2993 { 2994 u32 mask; 2995 struct ixgbe_hw *hw = &adapter->hw; 2996 2997 switch (hw->mac.type) { 2998 case ixgbe_mac_82598EB: 2999 mask = (IXGBE_EIMS_RTX_QUEUE & qmask); 3000 IXGBE_WRITE_REG(hw, IXGBE_EIMC, mask); 3001 break; 3002 case ixgbe_mac_82599EB: 3003 case ixgbe_mac_X540: 3004 case ixgbe_mac_X550: 3005 case ixgbe_mac_X550EM_x: 3006 case ixgbe_mac_x550em_a: 3007 mask = (qmask & 0xFFFFFFFF); 3008 if (mask) 3009 IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(0), mask); 3010 mask = (qmask >> 32); 3011 if (mask) 3012 IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(1), mask); 3013 break; 3014 default: 3015 break; 3016 } 3017 /* skip the flush */ 3018 } 3019 3020 /** 3021 * ixgbe_irq_enable - Enable default interrupt generation settings 3022 * @adapter: board private structure 3023 **/ 3024 static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues, 3025 bool flush) 3026 { 3027 struct ixgbe_hw *hw = &adapter->hw; 3028 u32 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE); 3029 3030 /* don't reenable LSC while waiting for link */ 3031 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) 3032 mask &= ~IXGBE_EIMS_LSC; 3033 3034 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) 3035 switch (adapter->hw.mac.type) { 3036 case ixgbe_mac_82599EB: 3037 mask |= IXGBE_EIMS_GPI_SDP0(hw); 3038 break; 3039 case ixgbe_mac_X540: 3040 case ixgbe_mac_X550: 3041 case ixgbe_mac_X550EM_x: 3042 case ixgbe_mac_x550em_a: 3043 mask |= IXGBE_EIMS_TS; 3044 break; 3045 default: 3046 break; 3047 } 3048 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) 3049 mask |= IXGBE_EIMS_GPI_SDP1(hw); 3050 switch (adapter->hw.mac.type) { 3051 case ixgbe_mac_82599EB: 3052 mask |= IXGBE_EIMS_GPI_SDP1(hw); 3053 mask |= IXGBE_EIMS_GPI_SDP2(hw); 3054 /* fall through */ 3055 case ixgbe_mac_X540: 3056 case ixgbe_mac_X550: 3057 case ixgbe_mac_X550EM_x: 3058 case ixgbe_mac_x550em_a: 3059 if (adapter->hw.device_id == IXGBE_DEV_ID_X550EM_X_SFP || 3060 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP || 3061 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP_N) 3062 mask |= IXGBE_EIMS_GPI_SDP0(&adapter->hw); 3063 if (adapter->hw.phy.type == ixgbe_phy_x550em_ext_t) 3064 mask |= IXGBE_EICR_GPI_SDP0_X540; 3065 mask |= IXGBE_EIMS_ECC; 3066 mask |= IXGBE_EIMS_MAILBOX; 3067 break; 3068 default: 3069 break; 3070 } 3071 3072 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) && 3073 !(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT)) 3074 mask |= IXGBE_EIMS_FLOW_DIR; 3075 3076 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); 3077 if (queues) 3078 ixgbe_irq_enable_queues(adapter, ~0); 3079 if (flush) 3080 IXGBE_WRITE_FLUSH(&adapter->hw); 3081 } 3082 3083 static irqreturn_t ixgbe_msix_other(int irq, void *data) 3084 { 3085 struct ixgbe_adapter *adapter = data; 3086 struct ixgbe_hw *hw = &adapter->hw; 3087 u32 eicr; 3088 3089 /* 3090 * Workaround for Silicon errata. Use clear-by-write instead 3091 * of clear-by-read. Reading with EICS will return the 3092 * interrupt causes without clearing, which later be done 3093 * with the write to EICR. 3094 */ 3095 eicr = IXGBE_READ_REG(hw, IXGBE_EICS); 3096 3097 /* The lower 16bits of the EICR register are for the queue interrupts 3098 * which should be masked here in order to not accidentally clear them if 3099 * the bits are high when ixgbe_msix_other is called. There is a race 3100 * condition otherwise which results in possible performance loss 3101 * especially if the ixgbe_msix_other interrupt is triggering 3102 * consistently (as it would when PPS is turned on for the X540 device) 3103 */ 3104 eicr &= 0xFFFF0000; 3105 3106 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr); 3107 3108 if (eicr & IXGBE_EICR_LSC) 3109 ixgbe_check_lsc(adapter); 3110 3111 if (eicr & IXGBE_EICR_MAILBOX) 3112 ixgbe_msg_task(adapter); 3113 3114 switch (hw->mac.type) { 3115 case ixgbe_mac_82599EB: 3116 case ixgbe_mac_X540: 3117 case ixgbe_mac_X550: 3118 case ixgbe_mac_X550EM_x: 3119 case ixgbe_mac_x550em_a: 3120 if (hw->phy.type == ixgbe_phy_x550em_ext_t && 3121 (eicr & IXGBE_EICR_GPI_SDP0_X540)) { 3122 adapter->flags2 |= IXGBE_FLAG2_PHY_INTERRUPT; 3123 ixgbe_service_event_schedule(adapter); 3124 IXGBE_WRITE_REG(hw, IXGBE_EICR, 3125 IXGBE_EICR_GPI_SDP0_X540); 3126 } 3127 if (eicr & IXGBE_EICR_ECC) { 3128 e_info(link, "Received ECC Err, initiating reset\n"); 3129 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 3130 ixgbe_service_event_schedule(adapter); 3131 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); 3132 } 3133 /* Handle Flow Director Full threshold interrupt */ 3134 if (eicr & IXGBE_EICR_FLOW_DIR) { 3135 int reinit_count = 0; 3136 int i; 3137 for (i = 0; i < adapter->num_tx_queues; i++) { 3138 struct ixgbe_ring *ring = adapter->tx_ring[i]; 3139 if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE, 3140 &ring->state)) 3141 reinit_count++; 3142 } 3143 if (reinit_count) { 3144 /* no more flow director interrupts until after init */ 3145 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR); 3146 adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 3147 ixgbe_service_event_schedule(adapter); 3148 } 3149 } 3150 ixgbe_check_sfp_event(adapter, eicr); 3151 ixgbe_check_overtemp_event(adapter, eicr); 3152 break; 3153 default: 3154 break; 3155 } 3156 3157 ixgbe_check_fan_failure(adapter, eicr); 3158 3159 if (unlikely(eicr & IXGBE_EICR_TIMESYNC)) 3160 ixgbe_ptp_check_pps_event(adapter); 3161 3162 /* re-enable the original interrupt state, no lsc, no queues */ 3163 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3164 ixgbe_irq_enable(adapter, false, false); 3165 3166 return IRQ_HANDLED; 3167 } 3168 3169 static irqreturn_t ixgbe_msix_clean_rings(int irq, void *data) 3170 { 3171 struct ixgbe_q_vector *q_vector = data; 3172 3173 /* EIAM disabled interrupts (on this vector) for us */ 3174 3175 if (q_vector->rx.ring || q_vector->tx.ring) 3176 napi_schedule_irqoff(&q_vector->napi); 3177 3178 return IRQ_HANDLED; 3179 } 3180 3181 /** 3182 * ixgbe_poll - NAPI Rx polling callback 3183 * @napi: structure for representing this polling device 3184 * @budget: how many packets driver is allowed to clean 3185 * 3186 * This function is used for legacy and MSI, NAPI mode 3187 **/ 3188 int ixgbe_poll(struct napi_struct *napi, int budget) 3189 { 3190 struct ixgbe_q_vector *q_vector = 3191 container_of(napi, struct ixgbe_q_vector, napi); 3192 struct ixgbe_adapter *adapter = q_vector->adapter; 3193 struct ixgbe_ring *ring; 3194 int per_ring_budget, work_done = 0; 3195 bool clean_complete = true; 3196 3197 #ifdef CONFIG_IXGBE_DCA 3198 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 3199 ixgbe_update_dca(q_vector); 3200 #endif 3201 3202 ixgbe_for_each_ring(ring, q_vector->tx) { 3203 if (!ixgbe_clean_tx_irq(q_vector, ring, budget)) 3204 clean_complete = false; 3205 } 3206 3207 /* Exit if we are called by netpoll */ 3208 if (budget <= 0) 3209 return budget; 3210 3211 /* attempt to distribute budget to each queue fairly, but don't allow 3212 * the budget to go below 1 because we'll exit polling */ 3213 if (q_vector->rx.count > 1) 3214 per_ring_budget = max(budget/q_vector->rx.count, 1); 3215 else 3216 per_ring_budget = budget; 3217 3218 ixgbe_for_each_ring(ring, q_vector->rx) { 3219 int cleaned = ixgbe_clean_rx_irq(q_vector, ring, 3220 per_ring_budget); 3221 3222 work_done += cleaned; 3223 if (cleaned >= per_ring_budget) 3224 clean_complete = false; 3225 } 3226 3227 /* If all work not completed, return budget and keep polling */ 3228 if (!clean_complete) 3229 return budget; 3230 3231 /* all work done, exit the polling mode */ 3232 napi_complete_done(napi, work_done); 3233 if (adapter->rx_itr_setting & 1) 3234 ixgbe_set_itr(q_vector); 3235 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3236 ixgbe_irq_enable_queues(adapter, BIT_ULL(q_vector->v_idx)); 3237 3238 return min(work_done, budget - 1); 3239 } 3240 3241 /** 3242 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts 3243 * @adapter: board private structure 3244 * 3245 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests 3246 * interrupts from the kernel. 3247 **/ 3248 static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter) 3249 { 3250 struct net_device *netdev = adapter->netdev; 3251 unsigned int ri = 0, ti = 0; 3252 int vector, err; 3253 3254 for (vector = 0; vector < adapter->num_q_vectors; vector++) { 3255 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector]; 3256 struct msix_entry *entry = &adapter->msix_entries[vector]; 3257 3258 if (q_vector->tx.ring && q_vector->rx.ring) { 3259 snprintf(q_vector->name, sizeof(q_vector->name), 3260 "%s-TxRx-%u", netdev->name, ri++); 3261 ti++; 3262 } else if (q_vector->rx.ring) { 3263 snprintf(q_vector->name, sizeof(q_vector->name), 3264 "%s-rx-%u", netdev->name, ri++); 3265 } else if (q_vector->tx.ring) { 3266 snprintf(q_vector->name, sizeof(q_vector->name), 3267 "%s-tx-%u", netdev->name, ti++); 3268 } else { 3269 /* skip this unused q_vector */ 3270 continue; 3271 } 3272 err = request_irq(entry->vector, &ixgbe_msix_clean_rings, 0, 3273 q_vector->name, q_vector); 3274 if (err) { 3275 e_err(probe, "request_irq failed for MSIX interrupt " 3276 "Error: %d\n", err); 3277 goto free_queue_irqs; 3278 } 3279 /* If Flow Director is enabled, set interrupt affinity */ 3280 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 3281 /* assign the mask for this irq */ 3282 irq_set_affinity_hint(entry->vector, 3283 &q_vector->affinity_mask); 3284 } 3285 } 3286 3287 err = request_irq(adapter->msix_entries[vector].vector, 3288 ixgbe_msix_other, 0, netdev->name, adapter); 3289 if (err) { 3290 e_err(probe, "request_irq for msix_other failed: %d\n", err); 3291 goto free_queue_irqs; 3292 } 3293 3294 return 0; 3295 3296 free_queue_irqs: 3297 while (vector) { 3298 vector--; 3299 irq_set_affinity_hint(adapter->msix_entries[vector].vector, 3300 NULL); 3301 free_irq(adapter->msix_entries[vector].vector, 3302 adapter->q_vector[vector]); 3303 } 3304 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; 3305 pci_disable_msix(adapter->pdev); 3306 kfree(adapter->msix_entries); 3307 adapter->msix_entries = NULL; 3308 return err; 3309 } 3310 3311 /** 3312 * ixgbe_intr - legacy mode Interrupt Handler 3313 * @irq: interrupt number 3314 * @data: pointer to a network interface device structure 3315 **/ 3316 static irqreturn_t ixgbe_intr(int irq, void *data) 3317 { 3318 struct ixgbe_adapter *adapter = data; 3319 struct ixgbe_hw *hw = &adapter->hw; 3320 struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; 3321 u32 eicr; 3322 3323 /* 3324 * Workaround for silicon errata #26 on 82598. Mask the interrupt 3325 * before the read of EICR. 3326 */ 3327 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); 3328 3329 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read 3330 * therefore no explicit interrupt disable is necessary */ 3331 eicr = IXGBE_READ_REG(hw, IXGBE_EICR); 3332 if (!eicr) { 3333 /* 3334 * shared interrupt alert! 3335 * make sure interrupts are enabled because the read will 3336 * have disabled interrupts due to EIAM 3337 * finish the workaround of silicon errata on 82598. Unmask 3338 * the interrupt that we masked before the EICR read. 3339 */ 3340 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3341 ixgbe_irq_enable(adapter, true, true); 3342 return IRQ_NONE; /* Not our interrupt */ 3343 } 3344 3345 if (eicr & IXGBE_EICR_LSC) 3346 ixgbe_check_lsc(adapter); 3347 3348 switch (hw->mac.type) { 3349 case ixgbe_mac_82599EB: 3350 ixgbe_check_sfp_event(adapter, eicr); 3351 /* Fall through */ 3352 case ixgbe_mac_X540: 3353 case ixgbe_mac_X550: 3354 case ixgbe_mac_X550EM_x: 3355 case ixgbe_mac_x550em_a: 3356 if (eicr & IXGBE_EICR_ECC) { 3357 e_info(link, "Received ECC Err, initiating reset\n"); 3358 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 3359 ixgbe_service_event_schedule(adapter); 3360 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); 3361 } 3362 ixgbe_check_overtemp_event(adapter, eicr); 3363 break; 3364 default: 3365 break; 3366 } 3367 3368 ixgbe_check_fan_failure(adapter, eicr); 3369 if (unlikely(eicr & IXGBE_EICR_TIMESYNC)) 3370 ixgbe_ptp_check_pps_event(adapter); 3371 3372 /* would disable interrupts here but EIAM disabled it */ 3373 napi_schedule_irqoff(&q_vector->napi); 3374 3375 /* 3376 * re-enable link(maybe) and non-queue interrupts, no flush. 3377 * ixgbe_poll will re-enable the queue interrupts 3378 */ 3379 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3380 ixgbe_irq_enable(adapter, false, false); 3381 3382 return IRQ_HANDLED; 3383 } 3384 3385 /** 3386 * ixgbe_request_irq - initialize interrupts 3387 * @adapter: board private structure 3388 * 3389 * Attempts to configure interrupts using the best available 3390 * capabilities of the hardware and kernel. 3391 **/ 3392 static int ixgbe_request_irq(struct ixgbe_adapter *adapter) 3393 { 3394 struct net_device *netdev = adapter->netdev; 3395 int err; 3396 3397 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) 3398 err = ixgbe_request_msix_irqs(adapter); 3399 else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) 3400 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0, 3401 netdev->name, adapter); 3402 else 3403 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED, 3404 netdev->name, adapter); 3405 3406 if (err) 3407 e_err(probe, "request_irq failed, Error %d\n", err); 3408 3409 return err; 3410 } 3411 3412 static void ixgbe_free_irq(struct ixgbe_adapter *adapter) 3413 { 3414 int vector; 3415 3416 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { 3417 free_irq(adapter->pdev->irq, adapter); 3418 return; 3419 } 3420 3421 if (!adapter->msix_entries) 3422 return; 3423 3424 for (vector = 0; vector < adapter->num_q_vectors; vector++) { 3425 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector]; 3426 struct msix_entry *entry = &adapter->msix_entries[vector]; 3427 3428 /* free only the irqs that were actually requested */ 3429 if (!q_vector->rx.ring && !q_vector->tx.ring) 3430 continue; 3431 3432 /* clear the affinity_mask in the IRQ descriptor */ 3433 irq_set_affinity_hint(entry->vector, NULL); 3434 3435 free_irq(entry->vector, q_vector); 3436 } 3437 3438 free_irq(adapter->msix_entries[vector].vector, adapter); 3439 } 3440 3441 /** 3442 * ixgbe_irq_disable - Mask off interrupt generation on the NIC 3443 * @adapter: board private structure 3444 **/ 3445 static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) 3446 { 3447 switch (adapter->hw.mac.type) { 3448 case ixgbe_mac_82598EB: 3449 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); 3450 break; 3451 case ixgbe_mac_82599EB: 3452 case ixgbe_mac_X540: 3453 case ixgbe_mac_X550: 3454 case ixgbe_mac_X550EM_x: 3455 case ixgbe_mac_x550em_a: 3456 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000); 3457 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0); 3458 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0); 3459 break; 3460 default: 3461 break; 3462 } 3463 IXGBE_WRITE_FLUSH(&adapter->hw); 3464 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { 3465 int vector; 3466 3467 for (vector = 0; vector < adapter->num_q_vectors; vector++) 3468 synchronize_irq(adapter->msix_entries[vector].vector); 3469 3470 synchronize_irq(adapter->msix_entries[vector++].vector); 3471 } else { 3472 synchronize_irq(adapter->pdev->irq); 3473 } 3474 } 3475 3476 /** 3477 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts 3478 * 3479 **/ 3480 static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) 3481 { 3482 struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; 3483 3484 ixgbe_write_eitr(q_vector); 3485 3486 ixgbe_set_ivar(adapter, 0, 0, 0); 3487 ixgbe_set_ivar(adapter, 1, 0, 0); 3488 3489 e_info(hw, "Legacy interrupt IVAR setup done\n"); 3490 } 3491 3492 /** 3493 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset 3494 * @adapter: board private structure 3495 * @ring: structure containing ring specific data 3496 * 3497 * Configure the Tx descriptor ring after a reset. 3498 **/ 3499 void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter, 3500 struct ixgbe_ring *ring) 3501 { 3502 struct ixgbe_hw *hw = &adapter->hw; 3503 u64 tdba = ring->dma; 3504 int wait_loop = 10; 3505 u32 txdctl = IXGBE_TXDCTL_ENABLE; 3506 u8 reg_idx = ring->reg_idx; 3507 3508 /* disable queue to avoid issues while updating state */ 3509 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), 0); 3510 IXGBE_WRITE_FLUSH(hw); 3511 3512 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx), 3513 (tdba & DMA_BIT_MASK(32))); 3514 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32)); 3515 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx), 3516 ring->count * sizeof(union ixgbe_adv_tx_desc)); 3517 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0); 3518 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0); 3519 ring->tail = adapter->io_addr + IXGBE_TDT(reg_idx); 3520 3521 /* 3522 * set WTHRESH to encourage burst writeback, it should not be set 3523 * higher than 1 when: 3524 * - ITR is 0 as it could cause false TX hangs 3525 * - ITR is set to > 100k int/sec and BQL is enabled 3526 * 3527 * In order to avoid issues WTHRESH + PTHRESH should always be equal 3528 * to or less than the number of on chip descriptors, which is 3529 * currently 40. 3530 */ 3531 if (!ring->q_vector || (ring->q_vector->itr < IXGBE_100K_ITR)) 3532 txdctl |= 1u << 16; /* WTHRESH = 1 */ 3533 else 3534 txdctl |= 8u << 16; /* WTHRESH = 8 */ 3535 3536 /* 3537 * Setting PTHRESH to 32 both improves performance 3538 * and avoids a TX hang with DFP enabled 3539 */ 3540 txdctl |= (1u << 8) | /* HTHRESH = 1 */ 3541 32; /* PTHRESH = 32 */ 3542 3543 /* reinitialize flowdirector state */ 3544 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 3545 ring->atr_sample_rate = adapter->atr_sample_rate; 3546 ring->atr_count = 0; 3547 set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state); 3548 } else { 3549 ring->atr_sample_rate = 0; 3550 } 3551 3552 /* initialize XPS */ 3553 if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE, &ring->state)) { 3554 struct ixgbe_q_vector *q_vector = ring->q_vector; 3555 3556 if (q_vector) 3557 netif_set_xps_queue(ring->netdev, 3558 &q_vector->affinity_mask, 3559 ring->queue_index); 3560 } 3561 3562 clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state); 3563 3564 /* reinitialize tx_buffer_info */ 3565 memset(ring->tx_buffer_info, 0, 3566 sizeof(struct ixgbe_tx_buffer) * ring->count); 3567 3568 /* enable queue */ 3569 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl); 3570 3571 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */ 3572 if (hw->mac.type == ixgbe_mac_82598EB && 3573 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 3574 return; 3575 3576 /* poll to verify queue is enabled */ 3577 do { 3578 usleep_range(1000, 2000); 3579 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 3580 } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE)); 3581 if (!wait_loop) 3582 hw_dbg(hw, "Could not enable Tx Queue %d\n", reg_idx); 3583 } 3584 3585 static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter) 3586 { 3587 struct ixgbe_hw *hw = &adapter->hw; 3588 u32 rttdcs, mtqc; 3589 u8 tcs = netdev_get_num_tc(adapter->netdev); 3590 3591 if (hw->mac.type == ixgbe_mac_82598EB) 3592 return; 3593 3594 /* disable the arbiter while setting MTQC */ 3595 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS); 3596 rttdcs |= IXGBE_RTTDCS_ARBDIS; 3597 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); 3598 3599 /* set transmit pool layout */ 3600 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 3601 mtqc = IXGBE_MTQC_VT_ENA; 3602 if (tcs > 4) 3603 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; 3604 else if (tcs > 1) 3605 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; 3606 else if (adapter->ring_feature[RING_F_VMDQ].mask == 3607 IXGBE_82599_VMDQ_4Q_MASK) 3608 mtqc |= IXGBE_MTQC_32VF; 3609 else 3610 mtqc |= IXGBE_MTQC_64VF; 3611 } else { 3612 if (tcs > 4) 3613 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; 3614 else if (tcs > 1) 3615 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; 3616 else 3617 mtqc = IXGBE_MTQC_64Q_1PB; 3618 } 3619 3620 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc); 3621 3622 /* Enable Security TX Buffer IFG for multiple pb */ 3623 if (tcs) { 3624 u32 sectx = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG); 3625 sectx |= IXGBE_SECTX_DCB; 3626 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, sectx); 3627 } 3628 3629 /* re-enable the arbiter */ 3630 rttdcs &= ~IXGBE_RTTDCS_ARBDIS; 3631 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); 3632 } 3633 3634 /** 3635 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset 3636 * @adapter: board private structure 3637 * 3638 * Configure the Tx unit of the MAC after a reset. 3639 **/ 3640 static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) 3641 { 3642 struct ixgbe_hw *hw = &adapter->hw; 3643 u32 dmatxctl; 3644 u32 i; 3645 3646 ixgbe_setup_mtqc(adapter); 3647 3648 if (hw->mac.type != ixgbe_mac_82598EB) { 3649 /* DMATXCTL.EN must be before Tx queues are enabled */ 3650 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL); 3651 dmatxctl |= IXGBE_DMATXCTL_TE; 3652 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl); 3653 } 3654 3655 /* Setup the HW Tx Head and Tail descriptor pointers */ 3656 for (i = 0; i < adapter->num_tx_queues; i++) 3657 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]); 3658 for (i = 0; i < adapter->num_xdp_queues; i++) 3659 ixgbe_configure_tx_ring(adapter, adapter->xdp_ring[i]); 3660 } 3661 3662 static void ixgbe_enable_rx_drop(struct ixgbe_adapter *adapter, 3663 struct ixgbe_ring *ring) 3664 { 3665 struct ixgbe_hw *hw = &adapter->hw; 3666 u8 reg_idx = ring->reg_idx; 3667 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx)); 3668 3669 srrctl |= IXGBE_SRRCTL_DROP_EN; 3670 3671 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 3672 } 3673 3674 static void ixgbe_disable_rx_drop(struct ixgbe_adapter *adapter, 3675 struct ixgbe_ring *ring) 3676 { 3677 struct ixgbe_hw *hw = &adapter->hw; 3678 u8 reg_idx = ring->reg_idx; 3679 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx)); 3680 3681 srrctl &= ~IXGBE_SRRCTL_DROP_EN; 3682 3683 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 3684 } 3685 3686 #ifdef CONFIG_IXGBE_DCB 3687 void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter) 3688 #else 3689 static void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter) 3690 #endif 3691 { 3692 int i; 3693 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 3694 3695 if (adapter->ixgbe_ieee_pfc) 3696 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 3697 3698 /* 3699 * We should set the drop enable bit if: 3700 * SR-IOV is enabled 3701 * or 3702 * Number of Rx queues > 1 and flow control is disabled 3703 * 3704 * This allows us to avoid head of line blocking for security 3705 * and performance reasons. 3706 */ 3707 if (adapter->num_vfs || (adapter->num_rx_queues > 1 && 3708 !(adapter->hw.fc.current_mode & ixgbe_fc_tx_pause) && !pfc_en)) { 3709 for (i = 0; i < adapter->num_rx_queues; i++) 3710 ixgbe_enable_rx_drop(adapter, adapter->rx_ring[i]); 3711 } else { 3712 for (i = 0; i < adapter->num_rx_queues; i++) 3713 ixgbe_disable_rx_drop(adapter, adapter->rx_ring[i]); 3714 } 3715 } 3716 3717 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 3718 3719 static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, 3720 struct ixgbe_ring *rx_ring) 3721 { 3722 struct ixgbe_hw *hw = &adapter->hw; 3723 u32 srrctl; 3724 u8 reg_idx = rx_ring->reg_idx; 3725 3726 if (hw->mac.type == ixgbe_mac_82598EB) { 3727 u16 mask = adapter->ring_feature[RING_F_RSS].mask; 3728 3729 /* 3730 * if VMDq is not active we must program one srrctl register 3731 * per RSS queue since we have enabled RDRXCTL.MVMEN 3732 */ 3733 reg_idx &= mask; 3734 } 3735 3736 /* configure header buffer length, needed for RSC */ 3737 srrctl = IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT; 3738 3739 /* configure the packet buffer length */ 3740 if (test_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state)) 3741 srrctl |= IXGBE_RXBUFFER_3K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 3742 else 3743 srrctl |= IXGBE_RXBUFFER_2K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 3744 3745 /* configure descriptor type */ 3746 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; 3747 3748 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 3749 } 3750 3751 /** 3752 * ixgbe_rss_indir_tbl_entries - Return RSS indirection table entries 3753 * @adapter: device handle 3754 * 3755 * - 82598/82599/X540: 128 3756 * - X550(non-SRIOV mode): 512 3757 * - X550(SRIOV mode): 64 3758 */ 3759 u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter) 3760 { 3761 if (adapter->hw.mac.type < ixgbe_mac_X550) 3762 return 128; 3763 else if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 3764 return 64; 3765 else 3766 return 512; 3767 } 3768 3769 /** 3770 * ixgbe_store_key - Write the RSS key to HW 3771 * @adapter: device handle 3772 * 3773 * Write the RSS key stored in adapter.rss_key to HW. 3774 */ 3775 void ixgbe_store_key(struct ixgbe_adapter *adapter) 3776 { 3777 struct ixgbe_hw *hw = &adapter->hw; 3778 int i; 3779 3780 for (i = 0; i < 10; i++) 3781 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), adapter->rss_key[i]); 3782 } 3783 3784 /** 3785 * ixgbe_init_rss_key - Initialize adapter RSS key 3786 * @adapter: device handle 3787 * 3788 * Allocates and initializes the RSS key if it is not allocated. 3789 **/ 3790 static inline int ixgbe_init_rss_key(struct ixgbe_adapter *adapter) 3791 { 3792 u32 *rss_key; 3793 3794 if (!adapter->rss_key) { 3795 rss_key = kzalloc(IXGBE_RSS_KEY_SIZE, GFP_KERNEL); 3796 if (unlikely(!rss_key)) 3797 return -ENOMEM; 3798 3799 netdev_rss_key_fill(rss_key, IXGBE_RSS_KEY_SIZE); 3800 adapter->rss_key = rss_key; 3801 } 3802 3803 return 0; 3804 } 3805 3806 /** 3807 * ixgbe_store_reta - Write the RETA table to HW 3808 * @adapter: device handle 3809 * 3810 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW. 3811 */ 3812 void ixgbe_store_reta(struct ixgbe_adapter *adapter) 3813 { 3814 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 3815 struct ixgbe_hw *hw = &adapter->hw; 3816 u32 reta = 0; 3817 u32 indices_multi; 3818 u8 *indir_tbl = adapter->rss_indir_tbl; 3819 3820 /* Fill out the redirection table as follows: 3821 * - 82598: 8 bit wide entries containing pair of 4 bit RSS 3822 * indices. 3823 * - 82599/X540: 8 bit wide entries containing 4 bit RSS index 3824 * - X550: 8 bit wide entries containing 6 bit RSS index 3825 */ 3826 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 3827 indices_multi = 0x11; 3828 else 3829 indices_multi = 0x1; 3830 3831 /* Write redirection table to HW */ 3832 for (i = 0; i < reta_entries; i++) { 3833 reta |= indices_multi * indir_tbl[i] << (i & 0x3) * 8; 3834 if ((i & 3) == 3) { 3835 if (i < 128) 3836 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); 3837 else 3838 IXGBE_WRITE_REG(hw, IXGBE_ERETA((i >> 2) - 32), 3839 reta); 3840 reta = 0; 3841 } 3842 } 3843 } 3844 3845 /** 3846 * ixgbe_store_vfreta - Write the RETA table to HW (x550 devices in SRIOV mode) 3847 * @adapter: device handle 3848 * 3849 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW. 3850 */ 3851 static void ixgbe_store_vfreta(struct ixgbe_adapter *adapter) 3852 { 3853 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 3854 struct ixgbe_hw *hw = &adapter->hw; 3855 u32 vfreta = 0; 3856 unsigned int pf_pool = adapter->num_vfs; 3857 3858 /* Write redirection table to HW */ 3859 for (i = 0; i < reta_entries; i++) { 3860 vfreta |= (u32)adapter->rss_indir_tbl[i] << (i & 0x3) * 8; 3861 if ((i & 3) == 3) { 3862 IXGBE_WRITE_REG(hw, IXGBE_PFVFRETA(i >> 2, pf_pool), 3863 vfreta); 3864 vfreta = 0; 3865 } 3866 } 3867 } 3868 3869 static void ixgbe_setup_reta(struct ixgbe_adapter *adapter) 3870 { 3871 u32 i, j; 3872 u32 reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 3873 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; 3874 3875 /* Program table for at least 4 queues w/ SR-IOV so that VFs can 3876 * make full use of any rings they may have. We will use the 3877 * PSRTYPE register to control how many rings we use within the PF. 3878 */ 3879 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && (rss_i < 4)) 3880 rss_i = 4; 3881 3882 /* Fill out hash function seeds */ 3883 ixgbe_store_key(adapter); 3884 3885 /* Fill out redirection table */ 3886 memset(adapter->rss_indir_tbl, 0, sizeof(adapter->rss_indir_tbl)); 3887 3888 for (i = 0, j = 0; i < reta_entries; i++, j++) { 3889 if (j == rss_i) 3890 j = 0; 3891 3892 adapter->rss_indir_tbl[i] = j; 3893 } 3894 3895 ixgbe_store_reta(adapter); 3896 } 3897 3898 static void ixgbe_setup_vfreta(struct ixgbe_adapter *adapter) 3899 { 3900 struct ixgbe_hw *hw = &adapter->hw; 3901 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; 3902 unsigned int pf_pool = adapter->num_vfs; 3903 int i, j; 3904 3905 /* Fill out hash function seeds */ 3906 for (i = 0; i < 10; i++) 3907 IXGBE_WRITE_REG(hw, IXGBE_PFVFRSSRK(i, pf_pool), 3908 *(adapter->rss_key + i)); 3909 3910 /* Fill out the redirection table */ 3911 for (i = 0, j = 0; i < 64; i++, j++) { 3912 if (j == rss_i) 3913 j = 0; 3914 3915 adapter->rss_indir_tbl[i] = j; 3916 } 3917 3918 ixgbe_store_vfreta(adapter); 3919 } 3920 3921 static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter) 3922 { 3923 struct ixgbe_hw *hw = &adapter->hw; 3924 u32 mrqc = 0, rss_field = 0, vfmrqc = 0; 3925 u32 rxcsum; 3926 3927 /* Disable indicating checksum in descriptor, enables RSS hash */ 3928 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); 3929 rxcsum |= IXGBE_RXCSUM_PCSD; 3930 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); 3931 3932 if (adapter->hw.mac.type == ixgbe_mac_82598EB) { 3933 if (adapter->ring_feature[RING_F_RSS].mask) 3934 mrqc = IXGBE_MRQC_RSSEN; 3935 } else { 3936 u8 tcs = netdev_get_num_tc(adapter->netdev); 3937 3938 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 3939 if (tcs > 4) 3940 mrqc = IXGBE_MRQC_VMDQRT8TCEN; /* 8 TCs */ 3941 else if (tcs > 1) 3942 mrqc = IXGBE_MRQC_VMDQRT4TCEN; /* 4 TCs */ 3943 else if (adapter->ring_feature[RING_F_VMDQ].mask == 3944 IXGBE_82599_VMDQ_4Q_MASK) 3945 mrqc = IXGBE_MRQC_VMDQRSS32EN; 3946 else 3947 mrqc = IXGBE_MRQC_VMDQRSS64EN; 3948 3949 /* Enable L3/L4 for Tx Switched packets */ 3950 mrqc |= IXGBE_MRQC_L3L4TXSWEN; 3951 } else { 3952 if (tcs > 4) 3953 mrqc = IXGBE_MRQC_RTRSS8TCEN; 3954 else if (tcs > 1) 3955 mrqc = IXGBE_MRQC_RTRSS4TCEN; 3956 else 3957 mrqc = IXGBE_MRQC_RSSEN; 3958 } 3959 } 3960 3961 /* Perform hash on these packet types */ 3962 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4 | 3963 IXGBE_MRQC_RSS_FIELD_IPV4_TCP | 3964 IXGBE_MRQC_RSS_FIELD_IPV6 | 3965 IXGBE_MRQC_RSS_FIELD_IPV6_TCP; 3966 3967 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV4_UDP) 3968 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP; 3969 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV6_UDP) 3970 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP; 3971 3972 if ((hw->mac.type >= ixgbe_mac_X550) && 3973 (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) { 3974 unsigned int pf_pool = adapter->num_vfs; 3975 3976 /* Enable VF RSS mode */ 3977 mrqc |= IXGBE_MRQC_MULTIPLE_RSS; 3978 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); 3979 3980 /* Setup RSS through the VF registers */ 3981 ixgbe_setup_vfreta(adapter); 3982 vfmrqc = IXGBE_MRQC_RSSEN; 3983 vfmrqc |= rss_field; 3984 IXGBE_WRITE_REG(hw, IXGBE_PFVFMRQC(pf_pool), vfmrqc); 3985 } else { 3986 ixgbe_setup_reta(adapter); 3987 mrqc |= rss_field; 3988 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); 3989 } 3990 } 3991 3992 /** 3993 * ixgbe_configure_rscctl - enable RSC for the indicated ring 3994 * @adapter: address of board private structure 3995 * @index: index of ring to set 3996 **/ 3997 static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter, 3998 struct ixgbe_ring *ring) 3999 { 4000 struct ixgbe_hw *hw = &adapter->hw; 4001 u32 rscctrl; 4002 u8 reg_idx = ring->reg_idx; 4003 4004 if (!ring_is_rsc_enabled(ring)) 4005 return; 4006 4007 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx)); 4008 rscctrl |= IXGBE_RSCCTL_RSCEN; 4009 /* 4010 * we must limit the number of descriptors so that the 4011 * total size of max desc * buf_len is not greater 4012 * than 65536 4013 */ 4014 rscctrl |= IXGBE_RSCCTL_MAXDESC_16; 4015 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl); 4016 } 4017 4018 #define IXGBE_MAX_RX_DESC_POLL 10 4019 static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter, 4020 struct ixgbe_ring *ring) 4021 { 4022 struct ixgbe_hw *hw = &adapter->hw; 4023 int wait_loop = IXGBE_MAX_RX_DESC_POLL; 4024 u32 rxdctl; 4025 u8 reg_idx = ring->reg_idx; 4026 4027 if (ixgbe_removed(hw->hw_addr)) 4028 return; 4029 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */ 4030 if (hw->mac.type == ixgbe_mac_82598EB && 4031 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 4032 return; 4033 4034 do { 4035 usleep_range(1000, 2000); 4036 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 4037 } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE)); 4038 4039 if (!wait_loop) { 4040 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within " 4041 "the polling period\n", reg_idx); 4042 } 4043 } 4044 4045 void ixgbe_disable_rx_queue(struct ixgbe_adapter *adapter, 4046 struct ixgbe_ring *ring) 4047 { 4048 struct ixgbe_hw *hw = &adapter->hw; 4049 int wait_loop = IXGBE_MAX_RX_DESC_POLL; 4050 u32 rxdctl; 4051 u8 reg_idx = ring->reg_idx; 4052 4053 if (ixgbe_removed(hw->hw_addr)) 4054 return; 4055 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 4056 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 4057 4058 /* write value back with RXDCTL.ENABLE bit cleared */ 4059 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 4060 4061 if (hw->mac.type == ixgbe_mac_82598EB && 4062 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 4063 return; 4064 4065 /* the hardware may take up to 100us to really disable the rx queue */ 4066 do { 4067 udelay(10); 4068 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 4069 } while (--wait_loop && (rxdctl & IXGBE_RXDCTL_ENABLE)); 4070 4071 if (!wait_loop) { 4072 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not cleared within " 4073 "the polling period\n", reg_idx); 4074 } 4075 } 4076 4077 void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter, 4078 struct ixgbe_ring *ring) 4079 { 4080 struct ixgbe_hw *hw = &adapter->hw; 4081 union ixgbe_adv_rx_desc *rx_desc; 4082 u64 rdba = ring->dma; 4083 u32 rxdctl; 4084 u8 reg_idx = ring->reg_idx; 4085 4086 /* disable queue to avoid issues while updating state */ 4087 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 4088 ixgbe_disable_rx_queue(adapter, ring); 4089 4090 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32))); 4091 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32)); 4092 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx), 4093 ring->count * sizeof(union ixgbe_adv_rx_desc)); 4094 /* Force flushing of IXGBE_RDLEN to prevent MDD */ 4095 IXGBE_WRITE_FLUSH(hw); 4096 4097 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0); 4098 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0); 4099 ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx); 4100 4101 ixgbe_configure_srrctl(adapter, ring); 4102 ixgbe_configure_rscctl(adapter, ring); 4103 4104 if (hw->mac.type == ixgbe_mac_82598EB) { 4105 /* 4106 * enable cache line friendly hardware writes: 4107 * PTHRESH=32 descriptors (half the internal cache), 4108 * this also removes ugly rx_no_buffer_count increment 4109 * HTHRESH=4 descriptors (to minimize latency on fetch) 4110 * WTHRESH=8 burst writeback up to two cache lines 4111 */ 4112 rxdctl &= ~0x3FFFFF; 4113 rxdctl |= 0x080420; 4114 #if (PAGE_SIZE < 8192) 4115 } else { 4116 rxdctl &= ~(IXGBE_RXDCTL_RLPMLMASK | 4117 IXGBE_RXDCTL_RLPML_EN); 4118 4119 /* Limit the maximum frame size so we don't overrun the skb */ 4120 if (ring_uses_build_skb(ring) && 4121 !test_bit(__IXGBE_RX_3K_BUFFER, &ring->state)) 4122 rxdctl |= IXGBE_MAX_2K_FRAME_BUILD_SKB | 4123 IXGBE_RXDCTL_RLPML_EN; 4124 #endif 4125 } 4126 4127 /* initialize rx_buffer_info */ 4128 memset(ring->rx_buffer_info, 0, 4129 sizeof(struct ixgbe_rx_buffer) * ring->count); 4130 4131 /* initialize Rx descriptor 0 */ 4132 rx_desc = IXGBE_RX_DESC(ring, 0); 4133 rx_desc->wb.upper.length = 0; 4134 4135 /* enable receive descriptor ring */ 4136 rxdctl |= IXGBE_RXDCTL_ENABLE; 4137 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 4138 4139 ixgbe_rx_desc_queue_enable(adapter, ring); 4140 ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring)); 4141 } 4142 4143 static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter) 4144 { 4145 struct ixgbe_hw *hw = &adapter->hw; 4146 int rss_i = adapter->ring_feature[RING_F_RSS].indices; 4147 u16 pool; 4148 4149 /* PSRTYPE must be initialized in non 82598 adapters */ 4150 u32 psrtype = IXGBE_PSRTYPE_TCPHDR | 4151 IXGBE_PSRTYPE_UDPHDR | 4152 IXGBE_PSRTYPE_IPV4HDR | 4153 IXGBE_PSRTYPE_L2HDR | 4154 IXGBE_PSRTYPE_IPV6HDR; 4155 4156 if (hw->mac.type == ixgbe_mac_82598EB) 4157 return; 4158 4159 if (rss_i > 3) 4160 psrtype |= 2u << 29; 4161 else if (rss_i > 1) 4162 psrtype |= 1u << 29; 4163 4164 for_each_set_bit(pool, &adapter->fwd_bitmask, 32) 4165 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype); 4166 } 4167 4168 static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter) 4169 { 4170 struct ixgbe_hw *hw = &adapter->hw; 4171 u32 reg_offset, vf_shift; 4172 u32 gcr_ext, vmdctl; 4173 int i; 4174 4175 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 4176 return; 4177 4178 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 4179 vmdctl |= IXGBE_VMD_CTL_VMDQ_EN; 4180 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 4181 vmdctl |= VMDQ_P(0) << IXGBE_VT_CTL_POOL_SHIFT; 4182 vmdctl |= IXGBE_VT_CTL_REPLEN; 4183 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 4184 4185 vf_shift = VMDQ_P(0) % 32; 4186 reg_offset = (VMDQ_P(0) >= 32) ? 1 : 0; 4187 4188 /* Enable only the PF's pool for Tx/Rx */ 4189 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), GENMASK(31, vf_shift)); 4190 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), reg_offset - 1); 4191 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), GENMASK(31, vf_shift)); 4192 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), reg_offset - 1); 4193 if (adapter->bridge_mode == BRIDGE_MODE_VEB) 4194 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 4195 4196 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */ 4197 hw->mac.ops.set_vmdq(hw, 0, VMDQ_P(0)); 4198 4199 /* clear VLAN promisc flag so VFTA will be updated if necessary */ 4200 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC; 4201 4202 /* 4203 * Set up VF register offsets for selected VT Mode, 4204 * i.e. 32 or 64 VFs for SR-IOV 4205 */ 4206 switch (adapter->ring_feature[RING_F_VMDQ].mask) { 4207 case IXGBE_82599_VMDQ_8Q_MASK: 4208 gcr_ext = IXGBE_GCR_EXT_VT_MODE_16; 4209 break; 4210 case IXGBE_82599_VMDQ_4Q_MASK: 4211 gcr_ext = IXGBE_GCR_EXT_VT_MODE_32; 4212 break; 4213 default: 4214 gcr_ext = IXGBE_GCR_EXT_VT_MODE_64; 4215 break; 4216 } 4217 4218 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext); 4219 4220 for (i = 0; i < adapter->num_vfs; i++) { 4221 /* configure spoof checking */ 4222 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, i, 4223 adapter->vfinfo[i].spoofchk_enabled); 4224 4225 /* Enable/Disable RSS query feature */ 4226 ixgbe_ndo_set_vf_rss_query_en(adapter->netdev, i, 4227 adapter->vfinfo[i].rss_query_enabled); 4228 } 4229 } 4230 4231 static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter) 4232 { 4233 struct ixgbe_hw *hw = &adapter->hw; 4234 struct net_device *netdev = adapter->netdev; 4235 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; 4236 struct ixgbe_ring *rx_ring; 4237 int i; 4238 u32 mhadd, hlreg0; 4239 4240 #ifdef IXGBE_FCOE 4241 /* adjust max frame to be able to do baby jumbo for FCoE */ 4242 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) && 4243 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE)) 4244 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE; 4245 4246 #endif /* IXGBE_FCOE */ 4247 4248 /* adjust max frame to be at least the size of a standard frame */ 4249 if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) 4250 max_frame = (ETH_FRAME_LEN + ETH_FCS_LEN); 4251 4252 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); 4253 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { 4254 mhadd &= ~IXGBE_MHADD_MFS_MASK; 4255 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; 4256 4257 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); 4258 } 4259 4260 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); 4261 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */ 4262 hlreg0 |= IXGBE_HLREG0_JUMBOEN; 4263 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); 4264 4265 /* 4266 * Setup the HW Rx Head and Tail Descriptor Pointers and 4267 * the Base and Length of the Rx Descriptor Ring 4268 */ 4269 for (i = 0; i < adapter->num_rx_queues; i++) { 4270 rx_ring = adapter->rx_ring[i]; 4271 4272 clear_ring_rsc_enabled(rx_ring); 4273 clear_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4274 clear_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); 4275 4276 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 4277 set_ring_rsc_enabled(rx_ring); 4278 4279 if (test_bit(__IXGBE_RX_FCOE, &rx_ring->state)) 4280 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4281 4282 clear_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); 4283 if (adapter->flags2 & IXGBE_FLAG2_RX_LEGACY) 4284 continue; 4285 4286 set_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); 4287 4288 #if (PAGE_SIZE < 8192) 4289 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 4290 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4291 4292 if (IXGBE_2K_TOO_SMALL_WITH_PADDING || 4293 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 4294 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4295 #endif 4296 } 4297 } 4298 4299 static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter) 4300 { 4301 struct ixgbe_hw *hw = &adapter->hw; 4302 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); 4303 4304 switch (hw->mac.type) { 4305 case ixgbe_mac_82598EB: 4306 /* 4307 * For VMDq support of different descriptor types or 4308 * buffer sizes through the use of multiple SRRCTL 4309 * registers, RDRXCTL.MVMEN must be set to 1 4310 * 4311 * also, the manual doesn't mention it clearly but DCA hints 4312 * will only use queue 0's tags unless this bit is set. Side 4313 * effects of setting this bit are only that SRRCTL must be 4314 * fully programmed [0..15] 4315 */ 4316 rdrxctl |= IXGBE_RDRXCTL_MVMEN; 4317 break; 4318 case ixgbe_mac_X550: 4319 case ixgbe_mac_X550EM_x: 4320 case ixgbe_mac_x550em_a: 4321 if (adapter->num_vfs) 4322 rdrxctl |= IXGBE_RDRXCTL_PSP; 4323 /* fall through */ 4324 case ixgbe_mac_82599EB: 4325 case ixgbe_mac_X540: 4326 /* Disable RSC for ACK packets */ 4327 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU, 4328 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU))); 4329 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE; 4330 /* hardware requires some bits to be set by default */ 4331 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX); 4332 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP; 4333 break; 4334 default: 4335 /* We should do nothing since we don't know this hardware */ 4336 return; 4337 } 4338 4339 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); 4340 } 4341 4342 /** 4343 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset 4344 * @adapter: board private structure 4345 * 4346 * Configure the Rx unit of the MAC after a reset. 4347 **/ 4348 static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) 4349 { 4350 struct ixgbe_hw *hw = &adapter->hw; 4351 int i; 4352 u32 rxctrl, rfctl; 4353 4354 /* disable receives while setting up the descriptors */ 4355 hw->mac.ops.disable_rx(hw); 4356 4357 ixgbe_setup_psrtype(adapter); 4358 ixgbe_setup_rdrxctl(adapter); 4359 4360 /* RSC Setup */ 4361 rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL); 4362 rfctl &= ~IXGBE_RFCTL_RSC_DIS; 4363 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) 4364 rfctl |= IXGBE_RFCTL_RSC_DIS; 4365 4366 /* disable NFS filtering */ 4367 rfctl |= (IXGBE_RFCTL_NFSW_DIS | IXGBE_RFCTL_NFSR_DIS); 4368 IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl); 4369 4370 /* Program registers for the distribution of queues */ 4371 ixgbe_setup_mrqc(adapter); 4372 4373 /* set_rx_buffer_len must be called before ring initialization */ 4374 ixgbe_set_rx_buffer_len(adapter); 4375 4376 /* 4377 * Setup the HW Rx Head and Tail Descriptor Pointers and 4378 * the Base and Length of the Rx Descriptor Ring 4379 */ 4380 for (i = 0; i < adapter->num_rx_queues; i++) 4381 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]); 4382 4383 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); 4384 /* disable drop enable for 82598 parts */ 4385 if (hw->mac.type == ixgbe_mac_82598EB) 4386 rxctrl |= IXGBE_RXCTRL_DMBYPS; 4387 4388 /* enable all receives */ 4389 rxctrl |= IXGBE_RXCTRL_RXEN; 4390 hw->mac.ops.enable_rx_dma(hw, rxctrl); 4391 } 4392 4393 static int ixgbe_vlan_rx_add_vid(struct net_device *netdev, 4394 __be16 proto, u16 vid) 4395 { 4396 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4397 struct ixgbe_hw *hw = &adapter->hw; 4398 4399 /* add VID to filter table */ 4400 if (!vid || !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4401 hw->mac.ops.set_vfta(&adapter->hw, vid, VMDQ_P(0), true, !!vid); 4402 4403 set_bit(vid, adapter->active_vlans); 4404 4405 return 0; 4406 } 4407 4408 static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan) 4409 { 4410 u32 vlvf; 4411 int idx; 4412 4413 /* short cut the special case */ 4414 if (vlan == 0) 4415 return 0; 4416 4417 /* Search for the vlan id in the VLVF entries */ 4418 for (idx = IXGBE_VLVF_ENTRIES; --idx;) { 4419 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(idx)); 4420 if ((vlvf & VLAN_VID_MASK) == vlan) 4421 break; 4422 } 4423 4424 return idx; 4425 } 4426 4427 void ixgbe_update_pf_promisc_vlvf(struct ixgbe_adapter *adapter, u32 vid) 4428 { 4429 struct ixgbe_hw *hw = &adapter->hw; 4430 u32 bits, word; 4431 int idx; 4432 4433 idx = ixgbe_find_vlvf_entry(hw, vid); 4434 if (!idx) 4435 return; 4436 4437 /* See if any other pools are set for this VLAN filter 4438 * entry other than the PF. 4439 */ 4440 word = idx * 2 + (VMDQ_P(0) / 32); 4441 bits = ~BIT(VMDQ_P(0) % 32); 4442 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 4443 4444 /* Disable the filter so this falls into the default pool. */ 4445 if (!bits && !IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1))) { 4446 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4447 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), 0); 4448 IXGBE_WRITE_REG(hw, IXGBE_VLVF(idx), 0); 4449 } 4450 } 4451 4452 static int ixgbe_vlan_rx_kill_vid(struct net_device *netdev, 4453 __be16 proto, u16 vid) 4454 { 4455 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4456 struct ixgbe_hw *hw = &adapter->hw; 4457 4458 /* remove VID from filter table */ 4459 if (vid && !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4460 hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), false, true); 4461 4462 clear_bit(vid, adapter->active_vlans); 4463 4464 return 0; 4465 } 4466 4467 /** 4468 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping 4469 * @adapter: driver data 4470 */ 4471 static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter) 4472 { 4473 struct ixgbe_hw *hw = &adapter->hw; 4474 u32 vlnctrl; 4475 int i, j; 4476 4477 switch (hw->mac.type) { 4478 case ixgbe_mac_82598EB: 4479 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4480 vlnctrl &= ~IXGBE_VLNCTRL_VME; 4481 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4482 break; 4483 case ixgbe_mac_82599EB: 4484 case ixgbe_mac_X540: 4485 case ixgbe_mac_X550: 4486 case ixgbe_mac_X550EM_x: 4487 case ixgbe_mac_x550em_a: 4488 for (i = 0; i < adapter->num_rx_queues; i++) { 4489 struct ixgbe_ring *ring = adapter->rx_ring[i]; 4490 4491 if (ring->l2_accel_priv) 4492 continue; 4493 j = ring->reg_idx; 4494 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); 4495 vlnctrl &= ~IXGBE_RXDCTL_VME; 4496 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); 4497 } 4498 break; 4499 default: 4500 break; 4501 } 4502 } 4503 4504 /** 4505 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping 4506 * @adapter: driver data 4507 */ 4508 static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter) 4509 { 4510 struct ixgbe_hw *hw = &adapter->hw; 4511 u32 vlnctrl; 4512 int i, j; 4513 4514 switch (hw->mac.type) { 4515 case ixgbe_mac_82598EB: 4516 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4517 vlnctrl |= IXGBE_VLNCTRL_VME; 4518 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4519 break; 4520 case ixgbe_mac_82599EB: 4521 case ixgbe_mac_X540: 4522 case ixgbe_mac_X550: 4523 case ixgbe_mac_X550EM_x: 4524 case ixgbe_mac_x550em_a: 4525 for (i = 0; i < adapter->num_rx_queues; i++) { 4526 struct ixgbe_ring *ring = adapter->rx_ring[i]; 4527 4528 if (ring->l2_accel_priv) 4529 continue; 4530 j = ring->reg_idx; 4531 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); 4532 vlnctrl |= IXGBE_RXDCTL_VME; 4533 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); 4534 } 4535 break; 4536 default: 4537 break; 4538 } 4539 } 4540 4541 static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter) 4542 { 4543 struct ixgbe_hw *hw = &adapter->hw; 4544 u32 vlnctrl, i; 4545 4546 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4547 4548 if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) { 4549 /* For VMDq and SR-IOV we must leave VLAN filtering enabled */ 4550 vlnctrl |= IXGBE_VLNCTRL_VFE; 4551 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4552 } else { 4553 vlnctrl &= ~IXGBE_VLNCTRL_VFE; 4554 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4555 return; 4556 } 4557 4558 /* Nothing to do for 82598 */ 4559 if (hw->mac.type == ixgbe_mac_82598EB) 4560 return; 4561 4562 /* We are already in VLAN promisc, nothing to do */ 4563 if (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC) 4564 return; 4565 4566 /* Set flag so we don't redo unnecessary work */ 4567 adapter->flags2 |= IXGBE_FLAG2_VLAN_PROMISC; 4568 4569 /* Add PF to all active pools */ 4570 for (i = IXGBE_VLVF_ENTRIES; --i;) { 4571 u32 reg_offset = IXGBE_VLVFB(i * 2 + VMDQ_P(0) / 32); 4572 u32 vlvfb = IXGBE_READ_REG(hw, reg_offset); 4573 4574 vlvfb |= BIT(VMDQ_P(0) % 32); 4575 IXGBE_WRITE_REG(hw, reg_offset, vlvfb); 4576 } 4577 4578 /* Set all bits in the VLAN filter table array */ 4579 for (i = hw->mac.vft_size; i--;) 4580 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), ~0U); 4581 } 4582 4583 #define VFTA_BLOCK_SIZE 8 4584 static void ixgbe_scrub_vfta(struct ixgbe_adapter *adapter, u32 vfta_offset) 4585 { 4586 struct ixgbe_hw *hw = &adapter->hw; 4587 u32 vfta[VFTA_BLOCK_SIZE] = { 0 }; 4588 u32 vid_start = vfta_offset * 32; 4589 u32 vid_end = vid_start + (VFTA_BLOCK_SIZE * 32); 4590 u32 i, vid, word, bits; 4591 4592 for (i = IXGBE_VLVF_ENTRIES; --i;) { 4593 u32 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); 4594 4595 /* pull VLAN ID from VLVF */ 4596 vid = vlvf & VLAN_VID_MASK; 4597 4598 /* only concern outselves with a certain range */ 4599 if (vid < vid_start || vid >= vid_end) 4600 continue; 4601 4602 if (vlvf) { 4603 /* record VLAN ID in VFTA */ 4604 vfta[(vid - vid_start) / 32] |= BIT(vid % 32); 4605 4606 /* if PF is part of this then continue */ 4607 if (test_bit(vid, adapter->active_vlans)) 4608 continue; 4609 } 4610 4611 /* remove PF from the pool */ 4612 word = i * 2 + VMDQ_P(0) / 32; 4613 bits = ~BIT(VMDQ_P(0) % 32); 4614 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 4615 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), bits); 4616 } 4617 4618 /* extract values from active_vlans and write back to VFTA */ 4619 for (i = VFTA_BLOCK_SIZE; i--;) { 4620 vid = (vfta_offset + i) * 32; 4621 word = vid / BITS_PER_LONG; 4622 bits = vid % BITS_PER_LONG; 4623 4624 vfta[i] |= adapter->active_vlans[word] >> bits; 4625 4626 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vfta_offset + i), vfta[i]); 4627 } 4628 } 4629 4630 static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter *adapter) 4631 { 4632 struct ixgbe_hw *hw = &adapter->hw; 4633 u32 vlnctrl, i; 4634 4635 /* Set VLAN filtering to enabled */ 4636 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4637 vlnctrl |= IXGBE_VLNCTRL_VFE; 4638 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4639 4640 if (!(adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) || 4641 hw->mac.type == ixgbe_mac_82598EB) 4642 return; 4643 4644 /* We are not in VLAN promisc, nothing to do */ 4645 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4646 return; 4647 4648 /* Set flag so we don't redo unnecessary work */ 4649 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC; 4650 4651 for (i = 0; i < hw->mac.vft_size; i += VFTA_BLOCK_SIZE) 4652 ixgbe_scrub_vfta(adapter, i); 4653 } 4654 4655 static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) 4656 { 4657 u16 vid = 1; 4658 4659 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0); 4660 4661 for_each_set_bit_from(vid, adapter->active_vlans, VLAN_N_VID) 4662 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); 4663 } 4664 4665 /** 4666 * ixgbe_write_mc_addr_list - write multicast addresses to MTA 4667 * @netdev: network interface device structure 4668 * 4669 * Writes multicast address list to the MTA hash table. 4670 * Returns: -ENOMEM on failure 4671 * 0 on no addresses written 4672 * X on writing X addresses to MTA 4673 **/ 4674 static int ixgbe_write_mc_addr_list(struct net_device *netdev) 4675 { 4676 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4677 struct ixgbe_hw *hw = &adapter->hw; 4678 4679 if (!netif_running(netdev)) 4680 return 0; 4681 4682 if (hw->mac.ops.update_mc_addr_list) 4683 hw->mac.ops.update_mc_addr_list(hw, netdev); 4684 else 4685 return -ENOMEM; 4686 4687 #ifdef CONFIG_PCI_IOV 4688 ixgbe_restore_vf_multicasts(adapter); 4689 #endif 4690 4691 return netdev_mc_count(netdev); 4692 } 4693 4694 #ifdef CONFIG_PCI_IOV 4695 void ixgbe_full_sync_mac_table(struct ixgbe_adapter *adapter) 4696 { 4697 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4698 struct ixgbe_hw *hw = &adapter->hw; 4699 int i; 4700 4701 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4702 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED; 4703 4704 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 4705 hw->mac.ops.set_rar(hw, i, 4706 mac_table->addr, 4707 mac_table->pool, 4708 IXGBE_RAH_AV); 4709 else 4710 hw->mac.ops.clear_rar(hw, i); 4711 } 4712 } 4713 4714 #endif 4715 static void ixgbe_sync_mac_table(struct ixgbe_adapter *adapter) 4716 { 4717 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4718 struct ixgbe_hw *hw = &adapter->hw; 4719 int i; 4720 4721 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4722 if (!(mac_table->state & IXGBE_MAC_STATE_MODIFIED)) 4723 continue; 4724 4725 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED; 4726 4727 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 4728 hw->mac.ops.set_rar(hw, i, 4729 mac_table->addr, 4730 mac_table->pool, 4731 IXGBE_RAH_AV); 4732 else 4733 hw->mac.ops.clear_rar(hw, i); 4734 } 4735 } 4736 4737 static void ixgbe_flush_sw_mac_table(struct ixgbe_adapter *adapter) 4738 { 4739 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4740 struct ixgbe_hw *hw = &adapter->hw; 4741 int i; 4742 4743 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4744 mac_table->state |= IXGBE_MAC_STATE_MODIFIED; 4745 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE; 4746 } 4747 4748 ixgbe_sync_mac_table(adapter); 4749 } 4750 4751 static int ixgbe_available_rars(struct ixgbe_adapter *adapter, u16 pool) 4752 { 4753 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4754 struct ixgbe_hw *hw = &adapter->hw; 4755 int i, count = 0; 4756 4757 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4758 /* do not count default RAR as available */ 4759 if (mac_table->state & IXGBE_MAC_STATE_DEFAULT) 4760 continue; 4761 4762 /* only count unused and addresses that belong to us */ 4763 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) { 4764 if (mac_table->pool != pool) 4765 continue; 4766 } 4767 4768 count++; 4769 } 4770 4771 return count; 4772 } 4773 4774 /* this function destroys the first RAR entry */ 4775 static void ixgbe_mac_set_default_filter(struct ixgbe_adapter *adapter) 4776 { 4777 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4778 struct ixgbe_hw *hw = &adapter->hw; 4779 4780 memcpy(&mac_table->addr, hw->mac.addr, ETH_ALEN); 4781 mac_table->pool = VMDQ_P(0); 4782 4783 mac_table->state = IXGBE_MAC_STATE_DEFAULT | IXGBE_MAC_STATE_IN_USE; 4784 4785 hw->mac.ops.set_rar(hw, 0, mac_table->addr, mac_table->pool, 4786 IXGBE_RAH_AV); 4787 } 4788 4789 int ixgbe_add_mac_filter(struct ixgbe_adapter *adapter, 4790 const u8 *addr, u16 pool) 4791 { 4792 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4793 struct ixgbe_hw *hw = &adapter->hw; 4794 int i; 4795 4796 if (is_zero_ether_addr(addr)) 4797 return -EINVAL; 4798 4799 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4800 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 4801 continue; 4802 4803 ether_addr_copy(mac_table->addr, addr); 4804 mac_table->pool = pool; 4805 4806 mac_table->state |= IXGBE_MAC_STATE_MODIFIED | 4807 IXGBE_MAC_STATE_IN_USE; 4808 4809 ixgbe_sync_mac_table(adapter); 4810 4811 return i; 4812 } 4813 4814 return -ENOMEM; 4815 } 4816 4817 int ixgbe_del_mac_filter(struct ixgbe_adapter *adapter, 4818 const u8 *addr, u16 pool) 4819 { 4820 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4821 struct ixgbe_hw *hw = &adapter->hw; 4822 int i; 4823 4824 if (is_zero_ether_addr(addr)) 4825 return -EINVAL; 4826 4827 /* search table for addr, if found clear IN_USE flag and sync */ 4828 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4829 /* we can only delete an entry if it is in use */ 4830 if (!(mac_table->state & IXGBE_MAC_STATE_IN_USE)) 4831 continue; 4832 /* we only care about entries that belong to the given pool */ 4833 if (mac_table->pool != pool) 4834 continue; 4835 /* we only care about a specific MAC address */ 4836 if (!ether_addr_equal(addr, mac_table->addr)) 4837 continue; 4838 4839 mac_table->state |= IXGBE_MAC_STATE_MODIFIED; 4840 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE; 4841 4842 ixgbe_sync_mac_table(adapter); 4843 4844 return 0; 4845 } 4846 4847 return -ENOMEM; 4848 } 4849 /** 4850 * ixgbe_write_uc_addr_list - write unicast addresses to RAR table 4851 * @netdev: network interface device structure 4852 * 4853 * Writes unicast address list to the RAR table. 4854 * Returns: -ENOMEM on failure/insufficient address space 4855 * 0 on no addresses written 4856 * X on writing X addresses to the RAR table 4857 **/ 4858 static int ixgbe_write_uc_addr_list(struct net_device *netdev, int vfn) 4859 { 4860 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4861 int count = 0; 4862 4863 /* return ENOMEM indicating insufficient memory for addresses */ 4864 if (netdev_uc_count(netdev) > ixgbe_available_rars(adapter, vfn)) 4865 return -ENOMEM; 4866 4867 if (!netdev_uc_empty(netdev)) { 4868 struct netdev_hw_addr *ha; 4869 netdev_for_each_uc_addr(ha, netdev) { 4870 ixgbe_del_mac_filter(adapter, ha->addr, vfn); 4871 ixgbe_add_mac_filter(adapter, ha->addr, vfn); 4872 count++; 4873 } 4874 } 4875 return count; 4876 } 4877 4878 static int ixgbe_uc_sync(struct net_device *netdev, const unsigned char *addr) 4879 { 4880 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4881 int ret; 4882 4883 ret = ixgbe_add_mac_filter(adapter, addr, VMDQ_P(0)); 4884 4885 return min_t(int, ret, 0); 4886 } 4887 4888 static int ixgbe_uc_unsync(struct net_device *netdev, const unsigned char *addr) 4889 { 4890 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4891 4892 ixgbe_del_mac_filter(adapter, addr, VMDQ_P(0)); 4893 4894 return 0; 4895 } 4896 4897 /** 4898 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set 4899 * @netdev: network interface device structure 4900 * 4901 * The set_rx_method entry point is called whenever the unicast/multicast 4902 * address list or the network interface flags are updated. This routine is 4903 * responsible for configuring the hardware for proper unicast, multicast and 4904 * promiscuous mode. 4905 **/ 4906 void ixgbe_set_rx_mode(struct net_device *netdev) 4907 { 4908 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4909 struct ixgbe_hw *hw = &adapter->hw; 4910 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE; 4911 netdev_features_t features = netdev->features; 4912 int count; 4913 4914 /* Check for Promiscuous and All Multicast modes */ 4915 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 4916 4917 /* set all bits that we expect to always be set */ 4918 fctrl &= ~IXGBE_FCTRL_SBP; /* disable store-bad-packets */ 4919 fctrl |= IXGBE_FCTRL_BAM; 4920 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */ 4921 fctrl |= IXGBE_FCTRL_PMCF; 4922 4923 /* clear the bits we are changing the status of */ 4924 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); 4925 if (netdev->flags & IFF_PROMISC) { 4926 hw->addr_ctrl.user_set_promisc = true; 4927 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); 4928 vmolr |= IXGBE_VMOLR_MPE; 4929 features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 4930 } else { 4931 if (netdev->flags & IFF_ALLMULTI) { 4932 fctrl |= IXGBE_FCTRL_MPE; 4933 vmolr |= IXGBE_VMOLR_MPE; 4934 } 4935 hw->addr_ctrl.user_set_promisc = false; 4936 } 4937 4938 /* 4939 * Write addresses to available RAR registers, if there is not 4940 * sufficient space to store all the addresses then enable 4941 * unicast promiscuous mode 4942 */ 4943 if (__dev_uc_sync(netdev, ixgbe_uc_sync, ixgbe_uc_unsync)) { 4944 fctrl |= IXGBE_FCTRL_UPE; 4945 vmolr |= IXGBE_VMOLR_ROPE; 4946 } 4947 4948 /* Write addresses to the MTA, if the attempt fails 4949 * then we should just turn on promiscuous mode so 4950 * that we can at least receive multicast traffic 4951 */ 4952 count = ixgbe_write_mc_addr_list(netdev); 4953 if (count < 0) { 4954 fctrl |= IXGBE_FCTRL_MPE; 4955 vmolr |= IXGBE_VMOLR_MPE; 4956 } else if (count) { 4957 vmolr |= IXGBE_VMOLR_ROMPE; 4958 } 4959 4960 if (hw->mac.type != ixgbe_mac_82598EB) { 4961 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(VMDQ_P(0))) & 4962 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE | 4963 IXGBE_VMOLR_ROPE); 4964 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(0)), vmolr); 4965 } 4966 4967 /* This is useful for sniffing bad packets. */ 4968 if (features & NETIF_F_RXALL) { 4969 /* UPE and MPE will be handled by normal PROMISC logic 4970 * in e1000e_set_rx_mode */ 4971 fctrl |= (IXGBE_FCTRL_SBP | /* Receive bad packets */ 4972 IXGBE_FCTRL_BAM | /* RX All Bcast Pkts */ 4973 IXGBE_FCTRL_PMCF); /* RX All MAC Ctrl Pkts */ 4974 4975 fctrl &= ~(IXGBE_FCTRL_DPF); 4976 /* NOTE: VLAN filtering is disabled by setting PROMISC */ 4977 } 4978 4979 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); 4980 4981 if (features & NETIF_F_HW_VLAN_CTAG_RX) 4982 ixgbe_vlan_strip_enable(adapter); 4983 else 4984 ixgbe_vlan_strip_disable(adapter); 4985 4986 if (features & NETIF_F_HW_VLAN_CTAG_FILTER) 4987 ixgbe_vlan_promisc_disable(adapter); 4988 else 4989 ixgbe_vlan_promisc_enable(adapter); 4990 } 4991 4992 static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter) 4993 { 4994 int q_idx; 4995 4996 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) 4997 napi_enable(&adapter->q_vector[q_idx]->napi); 4998 } 4999 5000 static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) 5001 { 5002 int q_idx; 5003 5004 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) 5005 napi_disable(&adapter->q_vector[q_idx]->napi); 5006 } 5007 5008 static void ixgbe_clear_udp_tunnel_port(struct ixgbe_adapter *adapter, u32 mask) 5009 { 5010 struct ixgbe_hw *hw = &adapter->hw; 5011 u32 vxlanctrl; 5012 5013 if (!(adapter->flags & (IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE | 5014 IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE))) 5015 return; 5016 5017 vxlanctrl = IXGBE_READ_REG(hw, IXGBE_VXLANCTRL) & ~mask; 5018 IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, vxlanctrl); 5019 5020 if (mask & IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK) 5021 adapter->vxlan_port = 0; 5022 5023 if (mask & IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK) 5024 adapter->geneve_port = 0; 5025 } 5026 5027 #ifdef CONFIG_IXGBE_DCB 5028 /** 5029 * ixgbe_configure_dcb - Configure DCB hardware 5030 * @adapter: ixgbe adapter struct 5031 * 5032 * This is called by the driver on open to configure the DCB hardware. 5033 * This is also called by the gennetlink interface when reconfiguring 5034 * the DCB state. 5035 */ 5036 static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter) 5037 { 5038 struct ixgbe_hw *hw = &adapter->hw; 5039 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN; 5040 5041 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) { 5042 if (hw->mac.type == ixgbe_mac_82598EB) 5043 netif_set_gso_max_size(adapter->netdev, 65536); 5044 return; 5045 } 5046 5047 if (hw->mac.type == ixgbe_mac_82598EB) 5048 netif_set_gso_max_size(adapter->netdev, 32768); 5049 5050 #ifdef IXGBE_FCOE 5051 if (adapter->netdev->features & NETIF_F_FCOE_MTU) 5052 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE); 5053 #endif 5054 5055 /* reconfigure the hardware */ 5056 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) { 5057 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, 5058 DCB_TX_CONFIG); 5059 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, 5060 DCB_RX_CONFIG); 5061 ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg); 5062 } else if (adapter->ixgbe_ieee_ets && adapter->ixgbe_ieee_pfc) { 5063 ixgbe_dcb_hw_ets(&adapter->hw, 5064 adapter->ixgbe_ieee_ets, 5065 max_frame); 5066 ixgbe_dcb_hw_pfc_config(&adapter->hw, 5067 adapter->ixgbe_ieee_pfc->pfc_en, 5068 adapter->ixgbe_ieee_ets->prio_tc); 5069 } 5070 5071 /* Enable RSS Hash per TC */ 5072 if (hw->mac.type != ixgbe_mac_82598EB) { 5073 u32 msb = 0; 5074 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices - 1; 5075 5076 while (rss_i) { 5077 msb++; 5078 rss_i >>= 1; 5079 } 5080 5081 /* write msb to all 8 TCs in one write */ 5082 IXGBE_WRITE_REG(hw, IXGBE_RQTC, msb * 0x11111111); 5083 } 5084 } 5085 #endif 5086 5087 /* Additional bittime to account for IXGBE framing */ 5088 #define IXGBE_ETH_FRAMING 20 5089 5090 /** 5091 * ixgbe_hpbthresh - calculate high water mark for flow control 5092 * 5093 * @adapter: board private structure to calculate for 5094 * @pb: packet buffer to calculate 5095 */ 5096 static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb) 5097 { 5098 struct ixgbe_hw *hw = &adapter->hw; 5099 struct net_device *dev = adapter->netdev; 5100 int link, tc, kb, marker; 5101 u32 dv_id, rx_pba; 5102 5103 /* Calculate max LAN frame size */ 5104 tc = link = dev->mtu + ETH_HLEN + ETH_FCS_LEN + IXGBE_ETH_FRAMING; 5105 5106 #ifdef IXGBE_FCOE 5107 /* FCoE traffic class uses FCOE jumbo frames */ 5108 if ((dev->features & NETIF_F_FCOE_MTU) && 5109 (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) && 5110 (pb == ixgbe_fcoe_get_tc(adapter))) 5111 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; 5112 #endif 5113 5114 /* Calculate delay value for device */ 5115 switch (hw->mac.type) { 5116 case ixgbe_mac_X540: 5117 case ixgbe_mac_X550: 5118 case ixgbe_mac_X550EM_x: 5119 case ixgbe_mac_x550em_a: 5120 dv_id = IXGBE_DV_X540(link, tc); 5121 break; 5122 default: 5123 dv_id = IXGBE_DV(link, tc); 5124 break; 5125 } 5126 5127 /* Loopback switch introduces additional latency */ 5128 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 5129 dv_id += IXGBE_B2BT(tc); 5130 5131 /* Delay value is calculated in bit times convert to KB */ 5132 kb = IXGBE_BT2KB(dv_id); 5133 rx_pba = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(pb)) >> 10; 5134 5135 marker = rx_pba - kb; 5136 5137 /* It is possible that the packet buffer is not large enough 5138 * to provide required headroom. In this case throw an error 5139 * to user and a do the best we can. 5140 */ 5141 if (marker < 0) { 5142 e_warn(drv, "Packet Buffer(%i) can not provide enough" 5143 "headroom to support flow control." 5144 "Decrease MTU or number of traffic classes\n", pb); 5145 marker = tc + 1; 5146 } 5147 5148 return marker; 5149 } 5150 5151 /** 5152 * ixgbe_lpbthresh - calculate low water mark for for flow control 5153 * 5154 * @adapter: board private structure to calculate for 5155 * @pb: packet buffer to calculate 5156 */ 5157 static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter, int pb) 5158 { 5159 struct ixgbe_hw *hw = &adapter->hw; 5160 struct net_device *dev = adapter->netdev; 5161 int tc; 5162 u32 dv_id; 5163 5164 /* Calculate max LAN frame size */ 5165 tc = dev->mtu + ETH_HLEN + ETH_FCS_LEN; 5166 5167 #ifdef IXGBE_FCOE 5168 /* FCoE traffic class uses FCOE jumbo frames */ 5169 if ((dev->features & NETIF_F_FCOE_MTU) && 5170 (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) && 5171 (pb == netdev_get_prio_tc_map(dev, adapter->fcoe.up))) 5172 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; 5173 #endif 5174 5175 /* Calculate delay value for device */ 5176 switch (hw->mac.type) { 5177 case ixgbe_mac_X540: 5178 case ixgbe_mac_X550: 5179 case ixgbe_mac_X550EM_x: 5180 case ixgbe_mac_x550em_a: 5181 dv_id = IXGBE_LOW_DV_X540(tc); 5182 break; 5183 default: 5184 dv_id = IXGBE_LOW_DV(tc); 5185 break; 5186 } 5187 5188 /* Delay value is calculated in bit times convert to KB */ 5189 return IXGBE_BT2KB(dv_id); 5190 } 5191 5192 /* 5193 * ixgbe_pbthresh_setup - calculate and setup high low water marks 5194 */ 5195 static void ixgbe_pbthresh_setup(struct ixgbe_adapter *adapter) 5196 { 5197 struct ixgbe_hw *hw = &adapter->hw; 5198 int num_tc = netdev_get_num_tc(adapter->netdev); 5199 int i; 5200 5201 if (!num_tc) 5202 num_tc = 1; 5203 5204 for (i = 0; i < num_tc; i++) { 5205 hw->fc.high_water[i] = ixgbe_hpbthresh(adapter, i); 5206 hw->fc.low_water[i] = ixgbe_lpbthresh(adapter, i); 5207 5208 /* Low water marks must not be larger than high water marks */ 5209 if (hw->fc.low_water[i] > hw->fc.high_water[i]) 5210 hw->fc.low_water[i] = 0; 5211 } 5212 5213 for (; i < MAX_TRAFFIC_CLASS; i++) 5214 hw->fc.high_water[i] = 0; 5215 } 5216 5217 static void ixgbe_configure_pb(struct ixgbe_adapter *adapter) 5218 { 5219 struct ixgbe_hw *hw = &adapter->hw; 5220 int hdrm; 5221 u8 tc = netdev_get_num_tc(adapter->netdev); 5222 5223 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE || 5224 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) 5225 hdrm = 32 << adapter->fdir_pballoc; 5226 else 5227 hdrm = 0; 5228 5229 hw->mac.ops.set_rxpba(hw, tc, hdrm, PBA_STRATEGY_EQUAL); 5230 ixgbe_pbthresh_setup(adapter); 5231 } 5232 5233 static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter) 5234 { 5235 struct ixgbe_hw *hw = &adapter->hw; 5236 struct hlist_node *node2; 5237 struct ixgbe_fdir_filter *filter; 5238 5239 spin_lock(&adapter->fdir_perfect_lock); 5240 5241 if (!hlist_empty(&adapter->fdir_filter_list)) 5242 ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask); 5243 5244 hlist_for_each_entry_safe(filter, node2, 5245 &adapter->fdir_filter_list, fdir_node) { 5246 ixgbe_fdir_write_perfect_filter_82599(hw, 5247 &filter->filter, 5248 filter->sw_idx, 5249 (filter->action == IXGBE_FDIR_DROP_QUEUE) ? 5250 IXGBE_FDIR_DROP_QUEUE : 5251 adapter->rx_ring[filter->action]->reg_idx); 5252 } 5253 5254 spin_unlock(&adapter->fdir_perfect_lock); 5255 } 5256 5257 static void ixgbe_macvlan_set_rx_mode(struct net_device *dev, unsigned int pool, 5258 struct ixgbe_adapter *adapter) 5259 { 5260 struct ixgbe_hw *hw = &adapter->hw; 5261 u32 vmolr; 5262 5263 /* No unicast promiscuous support for VMDQ devices. */ 5264 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(pool)); 5265 vmolr |= (IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE); 5266 5267 /* clear the affected bit */ 5268 vmolr &= ~IXGBE_VMOLR_MPE; 5269 5270 if (dev->flags & IFF_ALLMULTI) { 5271 vmolr |= IXGBE_VMOLR_MPE; 5272 } else { 5273 vmolr |= IXGBE_VMOLR_ROMPE; 5274 hw->mac.ops.update_mc_addr_list(hw, dev); 5275 } 5276 ixgbe_write_uc_addr_list(adapter->netdev, pool); 5277 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(pool), vmolr); 5278 } 5279 5280 static void ixgbe_fwd_psrtype(struct ixgbe_fwd_adapter *vadapter) 5281 { 5282 struct ixgbe_adapter *adapter = vadapter->real_adapter; 5283 int rss_i = adapter->num_rx_queues_per_pool; 5284 struct ixgbe_hw *hw = &adapter->hw; 5285 u16 pool = vadapter->pool; 5286 u32 psrtype = IXGBE_PSRTYPE_TCPHDR | 5287 IXGBE_PSRTYPE_UDPHDR | 5288 IXGBE_PSRTYPE_IPV4HDR | 5289 IXGBE_PSRTYPE_L2HDR | 5290 IXGBE_PSRTYPE_IPV6HDR; 5291 5292 if (hw->mac.type == ixgbe_mac_82598EB) 5293 return; 5294 5295 if (rss_i > 3) 5296 psrtype |= 2u << 29; 5297 else if (rss_i > 1) 5298 psrtype |= 1u << 29; 5299 5300 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype); 5301 } 5302 5303 /** 5304 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue 5305 * @rx_ring: ring to free buffers from 5306 **/ 5307 static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring) 5308 { 5309 u16 i = rx_ring->next_to_clean; 5310 struct ixgbe_rx_buffer *rx_buffer = &rx_ring->rx_buffer_info[i]; 5311 5312 /* Free all the Rx ring sk_buffs */ 5313 while (i != rx_ring->next_to_alloc) { 5314 if (rx_buffer->skb) { 5315 struct sk_buff *skb = rx_buffer->skb; 5316 if (IXGBE_CB(skb)->page_released) 5317 dma_unmap_page_attrs(rx_ring->dev, 5318 IXGBE_CB(skb)->dma, 5319 ixgbe_rx_pg_size(rx_ring), 5320 DMA_FROM_DEVICE, 5321 IXGBE_RX_DMA_ATTR); 5322 dev_kfree_skb(skb); 5323 } 5324 5325 /* Invalidate cache lines that may have been written to by 5326 * device so that we avoid corrupting memory. 5327 */ 5328 dma_sync_single_range_for_cpu(rx_ring->dev, 5329 rx_buffer->dma, 5330 rx_buffer->page_offset, 5331 ixgbe_rx_bufsz(rx_ring), 5332 DMA_FROM_DEVICE); 5333 5334 /* free resources associated with mapping */ 5335 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, 5336 ixgbe_rx_pg_size(rx_ring), 5337 DMA_FROM_DEVICE, 5338 IXGBE_RX_DMA_ATTR); 5339 __page_frag_cache_drain(rx_buffer->page, 5340 rx_buffer->pagecnt_bias); 5341 5342 i++; 5343 rx_buffer++; 5344 if (i == rx_ring->count) { 5345 i = 0; 5346 rx_buffer = rx_ring->rx_buffer_info; 5347 } 5348 } 5349 5350 rx_ring->next_to_alloc = 0; 5351 rx_ring->next_to_clean = 0; 5352 rx_ring->next_to_use = 0; 5353 } 5354 5355 static void ixgbe_disable_fwd_ring(struct ixgbe_fwd_adapter *vadapter, 5356 struct ixgbe_ring *rx_ring) 5357 { 5358 struct ixgbe_adapter *adapter = vadapter->real_adapter; 5359 int index = rx_ring->queue_index + vadapter->rx_base_queue; 5360 5361 /* shutdown specific queue receive and wait for dma to settle */ 5362 ixgbe_disable_rx_queue(adapter, rx_ring); 5363 usleep_range(10000, 20000); 5364 ixgbe_irq_disable_queues(adapter, BIT_ULL(index)); 5365 ixgbe_clean_rx_ring(rx_ring); 5366 rx_ring->l2_accel_priv = NULL; 5367 } 5368 5369 static int ixgbe_fwd_ring_down(struct net_device *vdev, 5370 struct ixgbe_fwd_adapter *accel) 5371 { 5372 struct ixgbe_adapter *adapter = accel->real_adapter; 5373 unsigned int rxbase = accel->rx_base_queue; 5374 unsigned int txbase = accel->tx_base_queue; 5375 int i; 5376 5377 netif_tx_stop_all_queues(vdev); 5378 5379 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) { 5380 ixgbe_disable_fwd_ring(accel, adapter->rx_ring[rxbase + i]); 5381 adapter->rx_ring[rxbase + i]->netdev = adapter->netdev; 5382 } 5383 5384 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) { 5385 adapter->tx_ring[txbase + i]->l2_accel_priv = NULL; 5386 adapter->tx_ring[txbase + i]->netdev = adapter->netdev; 5387 } 5388 5389 5390 return 0; 5391 } 5392 5393 static int ixgbe_fwd_ring_up(struct net_device *vdev, 5394 struct ixgbe_fwd_adapter *accel) 5395 { 5396 struct ixgbe_adapter *adapter = accel->real_adapter; 5397 unsigned int rxbase, txbase, queues; 5398 int i, baseq, err = 0; 5399 5400 if (!test_bit(accel->pool, &adapter->fwd_bitmask)) 5401 return 0; 5402 5403 baseq = accel->pool * adapter->num_rx_queues_per_pool; 5404 netdev_dbg(vdev, "pool %i:%i queues %i:%i VSI bitmask %lx\n", 5405 accel->pool, adapter->num_rx_pools, 5406 baseq, baseq + adapter->num_rx_queues_per_pool, 5407 adapter->fwd_bitmask); 5408 5409 accel->netdev = vdev; 5410 accel->rx_base_queue = rxbase = baseq; 5411 accel->tx_base_queue = txbase = baseq; 5412 5413 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) 5414 ixgbe_disable_fwd_ring(accel, adapter->rx_ring[rxbase + i]); 5415 5416 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) { 5417 adapter->rx_ring[rxbase + i]->netdev = vdev; 5418 adapter->rx_ring[rxbase + i]->l2_accel_priv = accel; 5419 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[rxbase + i]); 5420 } 5421 5422 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) { 5423 adapter->tx_ring[txbase + i]->netdev = vdev; 5424 adapter->tx_ring[txbase + i]->l2_accel_priv = accel; 5425 } 5426 5427 queues = min_t(unsigned int, 5428 adapter->num_rx_queues_per_pool, vdev->num_tx_queues); 5429 err = netif_set_real_num_tx_queues(vdev, queues); 5430 if (err) 5431 goto fwd_queue_err; 5432 5433 err = netif_set_real_num_rx_queues(vdev, queues); 5434 if (err) 5435 goto fwd_queue_err; 5436 5437 if (is_valid_ether_addr(vdev->dev_addr)) 5438 ixgbe_add_mac_filter(adapter, vdev->dev_addr, accel->pool); 5439 5440 ixgbe_fwd_psrtype(accel); 5441 ixgbe_macvlan_set_rx_mode(vdev, accel->pool, adapter); 5442 return err; 5443 fwd_queue_err: 5444 ixgbe_fwd_ring_down(vdev, accel); 5445 return err; 5446 } 5447 5448 static int ixgbe_upper_dev_walk(struct net_device *upper, void *data) 5449 { 5450 if (netif_is_macvlan(upper)) { 5451 struct macvlan_dev *dfwd = netdev_priv(upper); 5452 struct ixgbe_fwd_adapter *vadapter = dfwd->fwd_priv; 5453 5454 if (dfwd->fwd_priv) 5455 ixgbe_fwd_ring_up(upper, vadapter); 5456 } 5457 5458 return 0; 5459 } 5460 5461 static void ixgbe_configure_dfwd(struct ixgbe_adapter *adapter) 5462 { 5463 netdev_walk_all_upper_dev_rcu(adapter->netdev, 5464 ixgbe_upper_dev_walk, NULL); 5465 } 5466 5467 static void ixgbe_configure(struct ixgbe_adapter *adapter) 5468 { 5469 struct ixgbe_hw *hw = &adapter->hw; 5470 5471 ixgbe_configure_pb(adapter); 5472 #ifdef CONFIG_IXGBE_DCB 5473 ixgbe_configure_dcb(adapter); 5474 #endif 5475 /* 5476 * We must restore virtualization before VLANs or else 5477 * the VLVF registers will not be populated 5478 */ 5479 ixgbe_configure_virtualization(adapter); 5480 5481 ixgbe_set_rx_mode(adapter->netdev); 5482 ixgbe_restore_vlan(adapter); 5483 5484 switch (hw->mac.type) { 5485 case ixgbe_mac_82599EB: 5486 case ixgbe_mac_X540: 5487 hw->mac.ops.disable_rx_buff(hw); 5488 break; 5489 default: 5490 break; 5491 } 5492 5493 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 5494 ixgbe_init_fdir_signature_82599(&adapter->hw, 5495 adapter->fdir_pballoc); 5496 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) { 5497 ixgbe_init_fdir_perfect_82599(&adapter->hw, 5498 adapter->fdir_pballoc); 5499 ixgbe_fdir_filter_restore(adapter); 5500 } 5501 5502 switch (hw->mac.type) { 5503 case ixgbe_mac_82599EB: 5504 case ixgbe_mac_X540: 5505 hw->mac.ops.enable_rx_buff(hw); 5506 break; 5507 default: 5508 break; 5509 } 5510 5511 #ifdef CONFIG_IXGBE_DCA 5512 /* configure DCA */ 5513 if (adapter->flags & IXGBE_FLAG_DCA_CAPABLE) 5514 ixgbe_setup_dca(adapter); 5515 #endif /* CONFIG_IXGBE_DCA */ 5516 5517 #ifdef IXGBE_FCOE 5518 /* configure FCoE L2 filters, redirection table, and Rx control */ 5519 ixgbe_configure_fcoe(adapter); 5520 5521 #endif /* IXGBE_FCOE */ 5522 ixgbe_configure_tx(adapter); 5523 ixgbe_configure_rx(adapter); 5524 ixgbe_configure_dfwd(adapter); 5525 } 5526 5527 /** 5528 * ixgbe_sfp_link_config - set up SFP+ link 5529 * @adapter: pointer to private adapter struct 5530 **/ 5531 static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter) 5532 { 5533 /* 5534 * We are assuming the worst case scenario here, and that 5535 * is that an SFP was inserted/removed after the reset 5536 * but before SFP detection was enabled. As such the best 5537 * solution is to just start searching as soon as we start 5538 */ 5539 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 5540 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; 5541 5542 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 5543 adapter->sfp_poll_time = 0; 5544 } 5545 5546 /** 5547 * ixgbe_non_sfp_link_config - set up non-SFP+ link 5548 * @hw: pointer to private hardware struct 5549 * 5550 * Returns 0 on success, negative on failure 5551 **/ 5552 static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw) 5553 { 5554 u32 speed; 5555 bool autoneg, link_up = false; 5556 int ret = IXGBE_ERR_LINK_SETUP; 5557 5558 if (hw->mac.ops.check_link) 5559 ret = hw->mac.ops.check_link(hw, &speed, &link_up, false); 5560 5561 if (ret) 5562 return ret; 5563 5564 speed = hw->phy.autoneg_advertised; 5565 if ((!speed) && (hw->mac.ops.get_link_capabilities)) 5566 ret = hw->mac.ops.get_link_capabilities(hw, &speed, 5567 &autoneg); 5568 if (ret) 5569 return ret; 5570 5571 if (hw->mac.ops.setup_link) 5572 ret = hw->mac.ops.setup_link(hw, speed, link_up); 5573 5574 return ret; 5575 } 5576 5577 static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter) 5578 { 5579 struct ixgbe_hw *hw = &adapter->hw; 5580 u32 gpie = 0; 5581 5582 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { 5583 gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT | 5584 IXGBE_GPIE_OCD; 5585 gpie |= IXGBE_GPIE_EIAME; 5586 /* 5587 * use EIAM to auto-mask when MSI-X interrupt is asserted 5588 * this saves a register write for every interrupt 5589 */ 5590 switch (hw->mac.type) { 5591 case ixgbe_mac_82598EB: 5592 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); 5593 break; 5594 case ixgbe_mac_82599EB: 5595 case ixgbe_mac_X540: 5596 case ixgbe_mac_X550: 5597 case ixgbe_mac_X550EM_x: 5598 case ixgbe_mac_x550em_a: 5599 default: 5600 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF); 5601 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF); 5602 break; 5603 } 5604 } else { 5605 /* legacy interrupts, use EIAM to auto-mask when reading EICR, 5606 * specifically only auto mask tx and rx interrupts */ 5607 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); 5608 } 5609 5610 /* XXX: to interrupt immediately for EICS writes, enable this */ 5611 /* gpie |= IXGBE_GPIE_EIMEN; */ 5612 5613 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 5614 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 5615 5616 switch (adapter->ring_feature[RING_F_VMDQ].mask) { 5617 case IXGBE_82599_VMDQ_8Q_MASK: 5618 gpie |= IXGBE_GPIE_VTMODE_16; 5619 break; 5620 case IXGBE_82599_VMDQ_4Q_MASK: 5621 gpie |= IXGBE_GPIE_VTMODE_32; 5622 break; 5623 default: 5624 gpie |= IXGBE_GPIE_VTMODE_64; 5625 break; 5626 } 5627 } 5628 5629 /* Enable Thermal over heat sensor interrupt */ 5630 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) { 5631 switch (adapter->hw.mac.type) { 5632 case ixgbe_mac_82599EB: 5633 gpie |= IXGBE_SDP0_GPIEN_8259X; 5634 break; 5635 default: 5636 break; 5637 } 5638 } 5639 5640 /* Enable fan failure interrupt */ 5641 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) 5642 gpie |= IXGBE_SDP1_GPIEN(hw); 5643 5644 switch (hw->mac.type) { 5645 case ixgbe_mac_82599EB: 5646 gpie |= IXGBE_SDP1_GPIEN_8259X | IXGBE_SDP2_GPIEN_8259X; 5647 break; 5648 case ixgbe_mac_X550EM_x: 5649 case ixgbe_mac_x550em_a: 5650 gpie |= IXGBE_SDP0_GPIEN_X540; 5651 break; 5652 default: 5653 break; 5654 } 5655 5656 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 5657 } 5658 5659 static void ixgbe_up_complete(struct ixgbe_adapter *adapter) 5660 { 5661 struct ixgbe_hw *hw = &adapter->hw; 5662 int err; 5663 u32 ctrl_ext; 5664 5665 ixgbe_get_hw_control(adapter); 5666 ixgbe_setup_gpie(adapter); 5667 5668 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) 5669 ixgbe_configure_msix(adapter); 5670 else 5671 ixgbe_configure_msi_and_legacy(adapter); 5672 5673 /* enable the optics for 82599 SFP+ fiber */ 5674 if (hw->mac.ops.enable_tx_laser) 5675 hw->mac.ops.enable_tx_laser(hw); 5676 5677 if (hw->phy.ops.set_phy_power) 5678 hw->phy.ops.set_phy_power(hw, true); 5679 5680 smp_mb__before_atomic(); 5681 clear_bit(__IXGBE_DOWN, &adapter->state); 5682 ixgbe_napi_enable_all(adapter); 5683 5684 if (ixgbe_is_sfp(hw)) { 5685 ixgbe_sfp_link_config(adapter); 5686 } else { 5687 err = ixgbe_non_sfp_link_config(hw); 5688 if (err) 5689 e_err(probe, "link_config FAILED %d\n", err); 5690 } 5691 5692 /* clear any pending interrupts, may auto mask */ 5693 IXGBE_READ_REG(hw, IXGBE_EICR); 5694 ixgbe_irq_enable(adapter, true, true); 5695 5696 /* 5697 * If this adapter has a fan, check to see if we had a failure 5698 * before we enabled the interrupt. 5699 */ 5700 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { 5701 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); 5702 if (esdp & IXGBE_ESDP_SDP1) 5703 e_crit(drv, "Fan has stopped, replace the adapter\n"); 5704 } 5705 5706 /* bring the link up in the watchdog, this could race with our first 5707 * link up interrupt but shouldn't be a problem */ 5708 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 5709 adapter->link_check_timeout = jiffies; 5710 mod_timer(&adapter->service_timer, jiffies); 5711 5712 /* Set PF Reset Done bit so PF/VF Mail Ops can work */ 5713 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT); 5714 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD; 5715 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext); 5716 } 5717 5718 void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) 5719 { 5720 WARN_ON(in_interrupt()); 5721 /* put off any impending NetWatchDogTimeout */ 5722 netif_trans_update(adapter->netdev); 5723 5724 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) 5725 usleep_range(1000, 2000); 5726 if (adapter->hw.phy.type == ixgbe_phy_fw) 5727 ixgbe_watchdog_link_is_down(adapter); 5728 ixgbe_down(adapter); 5729 /* 5730 * If SR-IOV enabled then wait a bit before bringing the adapter 5731 * back up to give the VFs time to respond to the reset. The 5732 * two second wait is based upon the watchdog timer cycle in 5733 * the VF driver. 5734 */ 5735 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 5736 msleep(2000); 5737 ixgbe_up(adapter); 5738 clear_bit(__IXGBE_RESETTING, &adapter->state); 5739 } 5740 5741 void ixgbe_up(struct ixgbe_adapter *adapter) 5742 { 5743 /* hardware has been reset, we need to reload some things */ 5744 ixgbe_configure(adapter); 5745 5746 ixgbe_up_complete(adapter); 5747 } 5748 5749 void ixgbe_reset(struct ixgbe_adapter *adapter) 5750 { 5751 struct ixgbe_hw *hw = &adapter->hw; 5752 struct net_device *netdev = adapter->netdev; 5753 int err; 5754 5755 if (ixgbe_removed(hw->hw_addr)) 5756 return; 5757 /* lock SFP init bit to prevent race conditions with the watchdog */ 5758 while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 5759 usleep_range(1000, 2000); 5760 5761 /* clear all SFP and link config related flags while holding SFP_INIT */ 5762 adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP | 5763 IXGBE_FLAG2_SFP_NEEDS_RESET); 5764 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; 5765 5766 err = hw->mac.ops.init_hw(hw); 5767 switch (err) { 5768 case 0: 5769 case IXGBE_ERR_SFP_NOT_PRESENT: 5770 case IXGBE_ERR_SFP_NOT_SUPPORTED: 5771 break; 5772 case IXGBE_ERR_MASTER_REQUESTS_PENDING: 5773 e_dev_err("master disable timed out\n"); 5774 break; 5775 case IXGBE_ERR_EEPROM_VERSION: 5776 /* We are running on a pre-production device, log a warning */ 5777 e_dev_warn("This device is a pre-production adapter/LOM. " 5778 "Please be aware there may be issues associated with " 5779 "your hardware. If you are experiencing problems " 5780 "please contact your Intel or hardware " 5781 "representative who provided you with this " 5782 "hardware.\n"); 5783 break; 5784 default: 5785 e_dev_err("Hardware Error: %d\n", err); 5786 } 5787 5788 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 5789 5790 /* flush entries out of MAC table */ 5791 ixgbe_flush_sw_mac_table(adapter); 5792 __dev_uc_unsync(netdev, NULL); 5793 5794 /* do not flush user set addresses */ 5795 ixgbe_mac_set_default_filter(adapter); 5796 5797 /* update SAN MAC vmdq pool selection */ 5798 if (hw->mac.san_mac_rar_index) 5799 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0)); 5800 5801 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 5802 ixgbe_ptp_reset(adapter); 5803 5804 if (hw->phy.ops.set_phy_power) { 5805 if (!netif_running(adapter->netdev) && !adapter->wol) 5806 hw->phy.ops.set_phy_power(hw, false); 5807 else 5808 hw->phy.ops.set_phy_power(hw, true); 5809 } 5810 } 5811 5812 /** 5813 * ixgbe_clean_tx_ring - Free Tx Buffers 5814 * @tx_ring: ring to be cleaned 5815 **/ 5816 static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring) 5817 { 5818 u16 i = tx_ring->next_to_clean; 5819 struct ixgbe_tx_buffer *tx_buffer = &tx_ring->tx_buffer_info[i]; 5820 5821 while (i != tx_ring->next_to_use) { 5822 union ixgbe_adv_tx_desc *eop_desc, *tx_desc; 5823 5824 /* Free all the Tx ring sk_buffs */ 5825 if (ring_is_xdp(tx_ring)) 5826 page_frag_free(tx_buffer->data); 5827 else 5828 dev_kfree_skb_any(tx_buffer->skb); 5829 5830 /* unmap skb header data */ 5831 dma_unmap_single(tx_ring->dev, 5832 dma_unmap_addr(tx_buffer, dma), 5833 dma_unmap_len(tx_buffer, len), 5834 DMA_TO_DEVICE); 5835 5836 /* check for eop_desc to determine the end of the packet */ 5837 eop_desc = tx_buffer->next_to_watch; 5838 tx_desc = IXGBE_TX_DESC(tx_ring, i); 5839 5840 /* unmap remaining buffers */ 5841 while (tx_desc != eop_desc) { 5842 tx_buffer++; 5843 tx_desc++; 5844 i++; 5845 if (unlikely(i == tx_ring->count)) { 5846 i = 0; 5847 tx_buffer = tx_ring->tx_buffer_info; 5848 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 5849 } 5850 5851 /* unmap any remaining paged data */ 5852 if (dma_unmap_len(tx_buffer, len)) 5853 dma_unmap_page(tx_ring->dev, 5854 dma_unmap_addr(tx_buffer, dma), 5855 dma_unmap_len(tx_buffer, len), 5856 DMA_TO_DEVICE); 5857 } 5858 5859 /* move us one more past the eop_desc for start of next pkt */ 5860 tx_buffer++; 5861 i++; 5862 if (unlikely(i == tx_ring->count)) { 5863 i = 0; 5864 tx_buffer = tx_ring->tx_buffer_info; 5865 } 5866 } 5867 5868 /* reset BQL for queue */ 5869 if (!ring_is_xdp(tx_ring)) 5870 netdev_tx_reset_queue(txring_txq(tx_ring)); 5871 5872 /* reset next_to_use and next_to_clean */ 5873 tx_ring->next_to_use = 0; 5874 tx_ring->next_to_clean = 0; 5875 } 5876 5877 /** 5878 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues 5879 * @adapter: board private structure 5880 **/ 5881 static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) 5882 { 5883 int i; 5884 5885 for (i = 0; i < adapter->num_rx_queues; i++) 5886 ixgbe_clean_rx_ring(adapter->rx_ring[i]); 5887 } 5888 5889 /** 5890 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues 5891 * @adapter: board private structure 5892 **/ 5893 static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) 5894 { 5895 int i; 5896 5897 for (i = 0; i < adapter->num_tx_queues; i++) 5898 ixgbe_clean_tx_ring(adapter->tx_ring[i]); 5899 for (i = 0; i < adapter->num_xdp_queues; i++) 5900 ixgbe_clean_tx_ring(adapter->xdp_ring[i]); 5901 } 5902 5903 static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter) 5904 { 5905 struct hlist_node *node2; 5906 struct ixgbe_fdir_filter *filter; 5907 5908 spin_lock(&adapter->fdir_perfect_lock); 5909 5910 hlist_for_each_entry_safe(filter, node2, 5911 &adapter->fdir_filter_list, fdir_node) { 5912 hlist_del(&filter->fdir_node); 5913 kfree(filter); 5914 } 5915 adapter->fdir_filter_count = 0; 5916 5917 spin_unlock(&adapter->fdir_perfect_lock); 5918 } 5919 5920 static int ixgbe_disable_macvlan(struct net_device *upper, void *data) 5921 { 5922 if (netif_is_macvlan(upper)) { 5923 struct macvlan_dev *vlan = netdev_priv(upper); 5924 5925 if (vlan->fwd_priv) { 5926 netif_tx_stop_all_queues(upper); 5927 netif_carrier_off(upper); 5928 netif_tx_disable(upper); 5929 } 5930 } 5931 5932 return 0; 5933 } 5934 5935 void ixgbe_down(struct ixgbe_adapter *adapter) 5936 { 5937 struct net_device *netdev = adapter->netdev; 5938 struct ixgbe_hw *hw = &adapter->hw; 5939 int i; 5940 5941 /* signal that we are down to the interrupt handler */ 5942 if (test_and_set_bit(__IXGBE_DOWN, &adapter->state)) 5943 return; /* do nothing if already down */ 5944 5945 /* disable receives */ 5946 hw->mac.ops.disable_rx(hw); 5947 5948 /* disable all enabled rx queues */ 5949 for (i = 0; i < adapter->num_rx_queues; i++) 5950 /* this call also flushes the previous write */ 5951 ixgbe_disable_rx_queue(adapter, adapter->rx_ring[i]); 5952 5953 usleep_range(10000, 20000); 5954 5955 /* synchronize_sched() needed for pending XDP buffers to drain */ 5956 if (adapter->xdp_ring[0]) 5957 synchronize_sched(); 5958 netif_tx_stop_all_queues(netdev); 5959 5960 /* call carrier off first to avoid false dev_watchdog timeouts */ 5961 netif_carrier_off(netdev); 5962 netif_tx_disable(netdev); 5963 5964 /* disable any upper devices */ 5965 netdev_walk_all_upper_dev_rcu(adapter->netdev, 5966 ixgbe_disable_macvlan, NULL); 5967 5968 ixgbe_irq_disable(adapter); 5969 5970 ixgbe_napi_disable_all(adapter); 5971 5972 clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 5973 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 5974 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; 5975 5976 del_timer_sync(&adapter->service_timer); 5977 5978 if (adapter->num_vfs) { 5979 /* Clear EITR Select mapping */ 5980 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0); 5981 5982 /* Mark all the VFs as inactive */ 5983 for (i = 0 ; i < adapter->num_vfs; i++) 5984 adapter->vfinfo[i].clear_to_send = false; 5985 5986 /* ping all the active vfs to let them know we are going down */ 5987 ixgbe_ping_all_vfs(adapter); 5988 5989 /* Disable all VFTE/VFRE TX/RX */ 5990 ixgbe_disable_tx_rx(adapter); 5991 } 5992 5993 /* disable transmits in the hardware now that interrupts are off */ 5994 for (i = 0; i < adapter->num_tx_queues; i++) { 5995 u8 reg_idx = adapter->tx_ring[i]->reg_idx; 5996 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 5997 } 5998 for (i = 0; i < adapter->num_xdp_queues; i++) { 5999 u8 reg_idx = adapter->xdp_ring[i]->reg_idx; 6000 6001 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 6002 } 6003 6004 /* Disable the Tx DMA engine on 82599 and later MAC */ 6005 switch (hw->mac.type) { 6006 case ixgbe_mac_82599EB: 6007 case ixgbe_mac_X540: 6008 case ixgbe_mac_X550: 6009 case ixgbe_mac_X550EM_x: 6010 case ixgbe_mac_x550em_a: 6011 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, 6012 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) & 6013 ~IXGBE_DMATXCTL_TE)); 6014 break; 6015 default: 6016 break; 6017 } 6018 6019 if (!pci_channel_offline(adapter->pdev)) 6020 ixgbe_reset(adapter); 6021 6022 /* power down the optics for 82599 SFP+ fiber */ 6023 if (hw->mac.ops.disable_tx_laser) 6024 hw->mac.ops.disable_tx_laser(hw); 6025 6026 ixgbe_clean_all_tx_rings(adapter); 6027 ixgbe_clean_all_rx_rings(adapter); 6028 } 6029 6030 /** 6031 * ixgbe_eee_capable - helper function to determine EEE support on X550 6032 * @adapter: board private structure 6033 */ 6034 static void ixgbe_set_eee_capable(struct ixgbe_adapter *adapter) 6035 { 6036 struct ixgbe_hw *hw = &adapter->hw; 6037 6038 switch (hw->device_id) { 6039 case IXGBE_DEV_ID_X550EM_A_1G_T: 6040 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 6041 if (!hw->phy.eee_speeds_supported) 6042 break; 6043 adapter->flags2 |= IXGBE_FLAG2_EEE_CAPABLE; 6044 if (!hw->phy.eee_speeds_advertised) 6045 break; 6046 adapter->flags2 |= IXGBE_FLAG2_EEE_ENABLED; 6047 break; 6048 default: 6049 adapter->flags2 &= ~IXGBE_FLAG2_EEE_CAPABLE; 6050 adapter->flags2 &= ~IXGBE_FLAG2_EEE_ENABLED; 6051 break; 6052 } 6053 } 6054 6055 /** 6056 * ixgbe_tx_timeout - Respond to a Tx Hang 6057 * @netdev: network interface device structure 6058 **/ 6059 static void ixgbe_tx_timeout(struct net_device *netdev) 6060 { 6061 struct ixgbe_adapter *adapter = netdev_priv(netdev); 6062 6063 /* Do the reset outside of interrupt context */ 6064 ixgbe_tx_timeout_reset(adapter); 6065 } 6066 6067 #ifdef CONFIG_IXGBE_DCB 6068 static void ixgbe_init_dcb(struct ixgbe_adapter *adapter) 6069 { 6070 struct ixgbe_hw *hw = &adapter->hw; 6071 struct tc_configuration *tc; 6072 int j; 6073 6074 switch (hw->mac.type) { 6075 case ixgbe_mac_82598EB: 6076 case ixgbe_mac_82599EB: 6077 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 6078 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 6079 break; 6080 case ixgbe_mac_X540: 6081 case ixgbe_mac_X550: 6082 adapter->dcb_cfg.num_tcs.pg_tcs = X540_TRAFFIC_CLASS; 6083 adapter->dcb_cfg.num_tcs.pfc_tcs = X540_TRAFFIC_CLASS; 6084 break; 6085 case ixgbe_mac_X550EM_x: 6086 case ixgbe_mac_x550em_a: 6087 default: 6088 adapter->dcb_cfg.num_tcs.pg_tcs = DEF_TRAFFIC_CLASS; 6089 adapter->dcb_cfg.num_tcs.pfc_tcs = DEF_TRAFFIC_CLASS; 6090 break; 6091 } 6092 6093 /* Configure DCB traffic classes */ 6094 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) { 6095 tc = &adapter->dcb_cfg.tc_config[j]; 6096 tc->path[DCB_TX_CONFIG].bwg_id = 0; 6097 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1); 6098 tc->path[DCB_RX_CONFIG].bwg_id = 0; 6099 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1); 6100 tc->dcb_pfc = pfc_disabled; 6101 } 6102 6103 /* Initialize default user to priority mapping, UPx->TC0 */ 6104 tc = &adapter->dcb_cfg.tc_config[0]; 6105 tc->path[DCB_TX_CONFIG].up_to_tc_bitmap = 0xFF; 6106 tc->path[DCB_RX_CONFIG].up_to_tc_bitmap = 0xFF; 6107 6108 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100; 6109 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100; 6110 adapter->dcb_cfg.pfc_mode_enable = false; 6111 adapter->dcb_set_bitmap = 0x00; 6112 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE) 6113 adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE; 6114 memcpy(&adapter->temp_dcb_cfg, &adapter->dcb_cfg, 6115 sizeof(adapter->temp_dcb_cfg)); 6116 } 6117 #endif 6118 6119 /** 6120 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) 6121 * @adapter: board private structure to initialize 6122 * 6123 * ixgbe_sw_init initializes the Adapter private data structure. 6124 * Fields are initialized based on PCI device information and 6125 * OS network device settings (MTU size). 6126 **/ 6127 static int ixgbe_sw_init(struct ixgbe_adapter *adapter, 6128 const struct ixgbe_info *ii) 6129 { 6130 struct ixgbe_hw *hw = &adapter->hw; 6131 struct pci_dev *pdev = adapter->pdev; 6132 unsigned int rss, fdir; 6133 u32 fwsm; 6134 int i; 6135 6136 /* PCI config space info */ 6137 6138 hw->vendor_id = pdev->vendor; 6139 hw->device_id = pdev->device; 6140 hw->revision_id = pdev->revision; 6141 hw->subsystem_vendor_id = pdev->subsystem_vendor; 6142 hw->subsystem_device_id = pdev->subsystem_device; 6143 6144 /* get_invariants needs the device IDs */ 6145 ii->get_invariants(hw); 6146 6147 /* Set common capability flags and settings */ 6148 rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus()); 6149 adapter->ring_feature[RING_F_RSS].limit = rss; 6150 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE; 6151 adapter->max_q_vectors = MAX_Q_VECTORS_82599; 6152 adapter->atr_sample_rate = 20; 6153 fdir = min_t(int, IXGBE_MAX_FDIR_INDICES, num_online_cpus()); 6154 adapter->ring_feature[RING_F_FDIR].limit = fdir; 6155 adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K; 6156 #ifdef CONFIG_IXGBE_DCA 6157 adapter->flags |= IXGBE_FLAG_DCA_CAPABLE; 6158 #endif 6159 #ifdef CONFIG_IXGBE_DCB 6160 adapter->flags |= IXGBE_FLAG_DCB_CAPABLE; 6161 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; 6162 #endif 6163 #ifdef IXGBE_FCOE 6164 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE; 6165 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; 6166 #ifdef CONFIG_IXGBE_DCB 6167 /* Default traffic class to use for FCoE */ 6168 adapter->fcoe.up = IXGBE_FCOE_DEFTC; 6169 #endif /* CONFIG_IXGBE_DCB */ 6170 #endif /* IXGBE_FCOE */ 6171 6172 /* initialize static ixgbe jump table entries */ 6173 adapter->jump_tables[0] = kzalloc(sizeof(*adapter->jump_tables[0]), 6174 GFP_KERNEL); 6175 if (!adapter->jump_tables[0]) 6176 return -ENOMEM; 6177 adapter->jump_tables[0]->mat = ixgbe_ipv4_fields; 6178 6179 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) 6180 adapter->jump_tables[i] = NULL; 6181 6182 adapter->mac_table = kzalloc(sizeof(struct ixgbe_mac_addr) * 6183 hw->mac.num_rar_entries, 6184 GFP_ATOMIC); 6185 if (!adapter->mac_table) 6186 return -ENOMEM; 6187 6188 if (ixgbe_init_rss_key(adapter)) 6189 return -ENOMEM; 6190 6191 /* Set MAC specific capability flags and exceptions */ 6192 switch (hw->mac.type) { 6193 case ixgbe_mac_82598EB: 6194 adapter->flags2 &= ~IXGBE_FLAG2_RSC_CAPABLE; 6195 6196 if (hw->device_id == IXGBE_DEV_ID_82598AT) 6197 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE; 6198 6199 adapter->max_q_vectors = MAX_Q_VECTORS_82598; 6200 adapter->ring_feature[RING_F_FDIR].limit = 0; 6201 adapter->atr_sample_rate = 0; 6202 adapter->fdir_pballoc = 0; 6203 #ifdef IXGBE_FCOE 6204 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 6205 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; 6206 #ifdef CONFIG_IXGBE_DCB 6207 adapter->fcoe.up = 0; 6208 #endif /* IXGBE_DCB */ 6209 #endif /* IXGBE_FCOE */ 6210 break; 6211 case ixgbe_mac_82599EB: 6212 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM) 6213 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6214 break; 6215 case ixgbe_mac_X540: 6216 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw)); 6217 if (fwsm & IXGBE_FWSM_TS_ENABLED) 6218 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6219 break; 6220 case ixgbe_mac_x550em_a: 6221 adapter->flags |= IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE; 6222 switch (hw->device_id) { 6223 case IXGBE_DEV_ID_X550EM_A_1G_T: 6224 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 6225 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6226 break; 6227 default: 6228 break; 6229 } 6230 /* fall through */ 6231 case ixgbe_mac_X550EM_x: 6232 #ifdef CONFIG_IXGBE_DCB 6233 adapter->flags &= ~IXGBE_FLAG_DCB_CAPABLE; 6234 #endif 6235 #ifdef IXGBE_FCOE 6236 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 6237 #ifdef CONFIG_IXGBE_DCB 6238 adapter->fcoe.up = 0; 6239 #endif /* IXGBE_DCB */ 6240 #endif /* IXGBE_FCOE */ 6241 /* Fall Through */ 6242 case ixgbe_mac_X550: 6243 if (hw->mac.type == ixgbe_mac_X550) 6244 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6245 #ifdef CONFIG_IXGBE_DCA 6246 adapter->flags &= ~IXGBE_FLAG_DCA_CAPABLE; 6247 #endif 6248 adapter->flags |= IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE; 6249 break; 6250 default: 6251 break; 6252 } 6253 6254 #ifdef IXGBE_FCOE 6255 /* FCoE support exists, always init the FCoE lock */ 6256 spin_lock_init(&adapter->fcoe.lock); 6257 6258 #endif 6259 /* n-tuple support exists, always init our spinlock */ 6260 spin_lock_init(&adapter->fdir_perfect_lock); 6261 6262 #ifdef CONFIG_IXGBE_DCB 6263 ixgbe_init_dcb(adapter); 6264 #endif 6265 6266 /* default flow control settings */ 6267 hw->fc.requested_mode = ixgbe_fc_full; 6268 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */ 6269 ixgbe_pbthresh_setup(adapter); 6270 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; 6271 hw->fc.send_xon = true; 6272 hw->fc.disable_fc_autoneg = ixgbe_device_supports_autoneg_fc(hw); 6273 6274 #ifdef CONFIG_PCI_IOV 6275 if (max_vfs > 0) 6276 e_dev_warn("Enabling SR-IOV VFs using the max_vfs module parameter is deprecated - please use the pci sysfs interface instead.\n"); 6277 6278 /* assign number of SR-IOV VFs */ 6279 if (hw->mac.type != ixgbe_mac_82598EB) { 6280 if (max_vfs > IXGBE_MAX_VFS_DRV_LIMIT) { 6281 max_vfs = 0; 6282 e_dev_warn("max_vfs parameter out of range. Not assigning any SR-IOV VFs\n"); 6283 } 6284 } 6285 #endif /* CONFIG_PCI_IOV */ 6286 6287 /* enable itr by default in dynamic mode */ 6288 adapter->rx_itr_setting = 1; 6289 adapter->tx_itr_setting = 1; 6290 6291 /* set default ring sizes */ 6292 adapter->tx_ring_count = IXGBE_DEFAULT_TXD; 6293 adapter->rx_ring_count = IXGBE_DEFAULT_RXD; 6294 6295 /* set default work limits */ 6296 adapter->tx_work_limit = IXGBE_DEFAULT_TX_WORK; 6297 6298 /* initialize eeprom parameters */ 6299 if (ixgbe_init_eeprom_params_generic(hw)) { 6300 e_dev_err("EEPROM initialization failed\n"); 6301 return -EIO; 6302 } 6303 6304 /* PF holds first pool slot */ 6305 set_bit(0, &adapter->fwd_bitmask); 6306 set_bit(__IXGBE_DOWN, &adapter->state); 6307 6308 return 0; 6309 } 6310 6311 /** 6312 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) 6313 * @tx_ring: tx descriptor ring (for a specific queue) to setup 6314 * 6315 * Return 0 on success, negative on failure 6316 **/ 6317 int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring) 6318 { 6319 struct device *dev = tx_ring->dev; 6320 int orig_node = dev_to_node(dev); 6321 int ring_node = -1; 6322 int size; 6323 6324 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; 6325 6326 if (tx_ring->q_vector) 6327 ring_node = tx_ring->q_vector->numa_node; 6328 6329 tx_ring->tx_buffer_info = vmalloc_node(size, ring_node); 6330 if (!tx_ring->tx_buffer_info) 6331 tx_ring->tx_buffer_info = vmalloc(size); 6332 if (!tx_ring->tx_buffer_info) 6333 goto err; 6334 6335 /* round up to nearest 4K */ 6336 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc); 6337 tx_ring->size = ALIGN(tx_ring->size, 4096); 6338 6339 set_dev_node(dev, ring_node); 6340 tx_ring->desc = dma_alloc_coherent(dev, 6341 tx_ring->size, 6342 &tx_ring->dma, 6343 GFP_KERNEL); 6344 set_dev_node(dev, orig_node); 6345 if (!tx_ring->desc) 6346 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, 6347 &tx_ring->dma, GFP_KERNEL); 6348 if (!tx_ring->desc) 6349 goto err; 6350 6351 tx_ring->next_to_use = 0; 6352 tx_ring->next_to_clean = 0; 6353 return 0; 6354 6355 err: 6356 vfree(tx_ring->tx_buffer_info); 6357 tx_ring->tx_buffer_info = NULL; 6358 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n"); 6359 return -ENOMEM; 6360 } 6361 6362 /** 6363 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources 6364 * @adapter: board private structure 6365 * 6366 * If this function returns with an error, then it's possible one or 6367 * more of the rings is populated (while the rest are not). It is the 6368 * callers duty to clean those orphaned rings. 6369 * 6370 * Return 0 on success, negative on failure 6371 **/ 6372 static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) 6373 { 6374 int i, j = 0, err = 0; 6375 6376 for (i = 0; i < adapter->num_tx_queues; i++) { 6377 err = ixgbe_setup_tx_resources(adapter->tx_ring[i]); 6378 if (!err) 6379 continue; 6380 6381 e_err(probe, "Allocation for Tx Queue %u failed\n", i); 6382 goto err_setup_tx; 6383 } 6384 for (j = 0; j < adapter->num_xdp_queues; j++) { 6385 err = ixgbe_setup_tx_resources(adapter->xdp_ring[j]); 6386 if (!err) 6387 continue; 6388 6389 e_err(probe, "Allocation for Tx Queue %u failed\n", j); 6390 goto err_setup_tx; 6391 } 6392 6393 return 0; 6394 err_setup_tx: 6395 /* rewind the index freeing the rings as we go */ 6396 while (j--) 6397 ixgbe_free_tx_resources(adapter->xdp_ring[j]); 6398 while (i--) 6399 ixgbe_free_tx_resources(adapter->tx_ring[i]); 6400 return err; 6401 } 6402 6403 /** 6404 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) 6405 * @rx_ring: rx descriptor ring (for a specific queue) to setup 6406 * 6407 * Returns 0 on success, negative on failure 6408 **/ 6409 int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, 6410 struct ixgbe_ring *rx_ring) 6411 { 6412 struct device *dev = rx_ring->dev; 6413 int orig_node = dev_to_node(dev); 6414 int ring_node = -1; 6415 int size; 6416 6417 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; 6418 6419 if (rx_ring->q_vector) 6420 ring_node = rx_ring->q_vector->numa_node; 6421 6422 rx_ring->rx_buffer_info = vmalloc_node(size, ring_node); 6423 if (!rx_ring->rx_buffer_info) 6424 rx_ring->rx_buffer_info = vmalloc(size); 6425 if (!rx_ring->rx_buffer_info) 6426 goto err; 6427 6428 /* Round up to nearest 4K */ 6429 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); 6430 rx_ring->size = ALIGN(rx_ring->size, 4096); 6431 6432 set_dev_node(dev, ring_node); 6433 rx_ring->desc = dma_alloc_coherent(dev, 6434 rx_ring->size, 6435 &rx_ring->dma, 6436 GFP_KERNEL); 6437 set_dev_node(dev, orig_node); 6438 if (!rx_ring->desc) 6439 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, 6440 &rx_ring->dma, GFP_KERNEL); 6441 if (!rx_ring->desc) 6442 goto err; 6443 6444 rx_ring->next_to_clean = 0; 6445 rx_ring->next_to_use = 0; 6446 6447 rx_ring->xdp_prog = adapter->xdp_prog; 6448 6449 return 0; 6450 err: 6451 vfree(rx_ring->rx_buffer_info); 6452 rx_ring->rx_buffer_info = NULL; 6453 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n"); 6454 return -ENOMEM; 6455 } 6456 6457 /** 6458 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources 6459 * @adapter: board private structure 6460 * 6461 * If this function returns with an error, then it's possible one or 6462 * more of the rings is populated (while the rest are not). It is the 6463 * callers duty to clean those orphaned rings. 6464 * 6465 * Return 0 on success, negative on failure 6466 **/ 6467 static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) 6468 { 6469 int i, err = 0; 6470 6471 for (i = 0; i < adapter->num_rx_queues; i++) { 6472 err = ixgbe_setup_rx_resources(adapter, adapter->rx_ring[i]); 6473 if (!err) 6474 continue; 6475 6476 e_err(probe, "Allocation for Rx Queue %u failed\n", i); 6477 goto err_setup_rx; 6478 } 6479 6480 #ifdef IXGBE_FCOE 6481 err = ixgbe_setup_fcoe_ddp_resources(adapter); 6482 if (!err) 6483 #endif 6484 return 0; 6485 err_setup_rx: 6486 /* rewind the index freeing the rings as we go */ 6487 while (i--) 6488 ixgbe_free_rx_resources(adapter->rx_ring[i]); 6489 return err; 6490 } 6491 6492 /** 6493 * ixgbe_free_tx_resources - Free Tx Resources per Queue 6494 * @tx_ring: Tx descriptor ring for a specific queue 6495 * 6496 * Free all transmit software resources 6497 **/ 6498 void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring) 6499 { 6500 ixgbe_clean_tx_ring(tx_ring); 6501 6502 vfree(tx_ring->tx_buffer_info); 6503 tx_ring->tx_buffer_info = NULL; 6504 6505 /* if not set, then don't free */ 6506 if (!tx_ring->desc) 6507 return; 6508 6509 dma_free_coherent(tx_ring->dev, tx_ring->size, 6510 tx_ring->desc, tx_ring->dma); 6511 6512 tx_ring->desc = NULL; 6513 } 6514 6515 /** 6516 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues 6517 * @adapter: board private structure 6518 * 6519 * Free all transmit software resources 6520 **/ 6521 static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) 6522 { 6523 int i; 6524 6525 for (i = 0; i < adapter->num_tx_queues; i++) 6526 if (adapter->tx_ring[i]->desc) 6527 ixgbe_free_tx_resources(adapter->tx_ring[i]); 6528 for (i = 0; i < adapter->num_xdp_queues; i++) 6529 if (adapter->xdp_ring[i]->desc) 6530 ixgbe_free_tx_resources(adapter->xdp_ring[i]); 6531 } 6532 6533 /** 6534 * ixgbe_free_rx_resources - Free Rx Resources 6535 * @rx_ring: ring to clean the resources from 6536 * 6537 * Free all receive software resources 6538 **/ 6539 void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring) 6540 { 6541 ixgbe_clean_rx_ring(rx_ring); 6542 6543 rx_ring->xdp_prog = NULL; 6544 vfree(rx_ring->rx_buffer_info); 6545 rx_ring->rx_buffer_info = NULL; 6546 6547 /* if not set, then don't free */ 6548 if (!rx_ring->desc) 6549 return; 6550 6551 dma_free_coherent(rx_ring->dev, rx_ring->size, 6552 rx_ring->desc, rx_ring->dma); 6553 6554 rx_ring->desc = NULL; 6555 } 6556 6557 /** 6558 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues 6559 * @adapter: board private structure 6560 * 6561 * Free all receive software resources 6562 **/ 6563 static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) 6564 { 6565 int i; 6566 6567 #ifdef IXGBE_FCOE 6568 ixgbe_free_fcoe_ddp_resources(adapter); 6569 6570 #endif 6571 for (i = 0; i < adapter->num_rx_queues; i++) 6572 if (adapter->rx_ring[i]->desc) 6573 ixgbe_free_rx_resources(adapter->rx_ring[i]); 6574 } 6575 6576 /** 6577 * ixgbe_change_mtu - Change the Maximum Transfer Unit 6578 * @netdev: network interface device structure 6579 * @new_mtu: new value for maximum frame size 6580 * 6581 * Returns 0 on success, negative on failure 6582 **/ 6583 static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) 6584 { 6585 struct ixgbe_adapter *adapter = netdev_priv(netdev); 6586 6587 /* 6588 * For 82599EB we cannot allow legacy VFs to enable their receive 6589 * paths when MTU greater than 1500 is configured. So display a 6590 * warning that legacy VFs will be disabled. 6591 */ 6592 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && 6593 (adapter->hw.mac.type == ixgbe_mac_82599EB) && 6594 (new_mtu > ETH_DATA_LEN)) 6595 e_warn(probe, "Setting MTU > 1500 will disable legacy VFs\n"); 6596 6597 e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu); 6598 6599 /* must set new MTU before calling down or up */ 6600 netdev->mtu = new_mtu; 6601 6602 if (netif_running(netdev)) 6603 ixgbe_reinit_locked(adapter); 6604 6605 return 0; 6606 } 6607 6608 /** 6609 * ixgbe_open - Called when a network interface is made active 6610 * @netdev: network interface device structure 6611 * 6612 * Returns 0 on success, negative value on failure 6613 * 6614 * The open entry point is called when a network interface is made 6615 * active by the system (IFF_UP). At this point all resources needed 6616 * for transmit and receive operations are allocated, the interrupt 6617 * handler is registered with the OS, the watchdog timer is started, 6618 * and the stack is notified that the interface is ready. 6619 **/ 6620 int ixgbe_open(struct net_device *netdev) 6621 { 6622 struct ixgbe_adapter *adapter = netdev_priv(netdev); 6623 struct ixgbe_hw *hw = &adapter->hw; 6624 int err, queues; 6625 6626 /* disallow open during test */ 6627 if (test_bit(__IXGBE_TESTING, &adapter->state)) 6628 return -EBUSY; 6629 6630 netif_carrier_off(netdev); 6631 6632 /* allocate transmit descriptors */ 6633 err = ixgbe_setup_all_tx_resources(adapter); 6634 if (err) 6635 goto err_setup_tx; 6636 6637 /* allocate receive descriptors */ 6638 err = ixgbe_setup_all_rx_resources(adapter); 6639 if (err) 6640 goto err_setup_rx; 6641 6642 ixgbe_configure(adapter); 6643 6644 err = ixgbe_request_irq(adapter); 6645 if (err) 6646 goto err_req_irq; 6647 6648 /* Notify the stack of the actual queue counts. */ 6649 if (adapter->num_rx_pools > 1) 6650 queues = adapter->num_rx_queues_per_pool; 6651 else 6652 queues = adapter->num_tx_queues; 6653 6654 err = netif_set_real_num_tx_queues(netdev, queues); 6655 if (err) 6656 goto err_set_queues; 6657 6658 if (adapter->num_rx_pools > 1 && 6659 adapter->num_rx_queues > IXGBE_MAX_L2A_QUEUES) 6660 queues = IXGBE_MAX_L2A_QUEUES; 6661 else 6662 queues = adapter->num_rx_queues; 6663 err = netif_set_real_num_rx_queues(netdev, queues); 6664 if (err) 6665 goto err_set_queues; 6666 6667 ixgbe_ptp_init(adapter); 6668 6669 ixgbe_up_complete(adapter); 6670 6671 ixgbe_clear_udp_tunnel_port(adapter, IXGBE_VXLANCTRL_ALL_UDPPORT_MASK); 6672 udp_tunnel_get_rx_info(netdev); 6673 6674 return 0; 6675 6676 err_set_queues: 6677 ixgbe_free_irq(adapter); 6678 err_req_irq: 6679 ixgbe_free_all_rx_resources(adapter); 6680 if (hw->phy.ops.set_phy_power && !adapter->wol) 6681 hw->phy.ops.set_phy_power(&adapter->hw, false); 6682 err_setup_rx: 6683 ixgbe_free_all_tx_resources(adapter); 6684 err_setup_tx: 6685 ixgbe_reset(adapter); 6686 6687 return err; 6688 } 6689 6690 static void ixgbe_close_suspend(struct ixgbe_adapter *adapter) 6691 { 6692 ixgbe_ptp_suspend(adapter); 6693 6694 if (adapter->hw.phy.ops.enter_lplu) { 6695 adapter->hw.phy.reset_disable = true; 6696 ixgbe_down(adapter); 6697 adapter->hw.phy.ops.enter_lplu(&adapter->hw); 6698 adapter->hw.phy.reset_disable = false; 6699 } else { 6700 ixgbe_down(adapter); 6701 } 6702 6703 ixgbe_free_irq(adapter); 6704 6705 ixgbe_free_all_tx_resources(adapter); 6706 ixgbe_free_all_rx_resources(adapter); 6707 } 6708 6709 /** 6710 * ixgbe_close - Disables a network interface 6711 * @netdev: network interface device structure 6712 * 6713 * Returns 0, this is not allowed to fail 6714 * 6715 * The close entry point is called when an interface is de-activated 6716 * by the OS. The hardware is still under the drivers control, but 6717 * needs to be disabled. A global MAC reset is issued to stop the 6718 * hardware, and all transmit and receive resources are freed. 6719 **/ 6720 int ixgbe_close(struct net_device *netdev) 6721 { 6722 struct ixgbe_adapter *adapter = netdev_priv(netdev); 6723 6724 ixgbe_ptp_stop(adapter); 6725 6726 if (netif_device_present(netdev)) 6727 ixgbe_close_suspend(adapter); 6728 6729 ixgbe_fdir_filter_exit(adapter); 6730 6731 ixgbe_release_hw_control(adapter); 6732 6733 return 0; 6734 } 6735 6736 #ifdef CONFIG_PM 6737 static int ixgbe_resume(struct pci_dev *pdev) 6738 { 6739 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 6740 struct net_device *netdev = adapter->netdev; 6741 u32 err; 6742 6743 adapter->hw.hw_addr = adapter->io_addr; 6744 pci_set_power_state(pdev, PCI_D0); 6745 pci_restore_state(pdev); 6746 /* 6747 * pci_restore_state clears dev->state_saved so call 6748 * pci_save_state to restore it. 6749 */ 6750 pci_save_state(pdev); 6751 6752 err = pci_enable_device_mem(pdev); 6753 if (err) { 6754 e_dev_err("Cannot enable PCI device from suspend\n"); 6755 return err; 6756 } 6757 smp_mb__before_atomic(); 6758 clear_bit(__IXGBE_DISABLED, &adapter->state); 6759 pci_set_master(pdev); 6760 6761 pci_wake_from_d3(pdev, false); 6762 6763 ixgbe_reset(adapter); 6764 6765 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 6766 6767 rtnl_lock(); 6768 err = ixgbe_init_interrupt_scheme(adapter); 6769 if (!err && netif_running(netdev)) 6770 err = ixgbe_open(netdev); 6771 6772 6773 if (!err) 6774 netif_device_attach(netdev); 6775 rtnl_unlock(); 6776 6777 return err; 6778 } 6779 #endif /* CONFIG_PM */ 6780 6781 static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake) 6782 { 6783 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 6784 struct net_device *netdev = adapter->netdev; 6785 struct ixgbe_hw *hw = &adapter->hw; 6786 u32 ctrl, fctrl; 6787 u32 wufc = adapter->wol; 6788 #ifdef CONFIG_PM 6789 int retval = 0; 6790 #endif 6791 6792 rtnl_lock(); 6793 netif_device_detach(netdev); 6794 6795 if (netif_running(netdev)) 6796 ixgbe_close_suspend(adapter); 6797 6798 ixgbe_clear_interrupt_scheme(adapter); 6799 rtnl_unlock(); 6800 6801 #ifdef CONFIG_PM 6802 retval = pci_save_state(pdev); 6803 if (retval) 6804 return retval; 6805 6806 #endif 6807 if (hw->mac.ops.stop_link_on_d3) 6808 hw->mac.ops.stop_link_on_d3(hw); 6809 6810 if (wufc) { 6811 ixgbe_set_rx_mode(netdev); 6812 6813 /* enable the optics for 82599 SFP+ fiber as we can WoL */ 6814 if (hw->mac.ops.enable_tx_laser) 6815 hw->mac.ops.enable_tx_laser(hw); 6816 6817 /* turn on all-multi mode if wake on multicast is enabled */ 6818 if (wufc & IXGBE_WUFC_MC) { 6819 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 6820 fctrl |= IXGBE_FCTRL_MPE; 6821 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); 6822 } 6823 6824 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL); 6825 ctrl |= IXGBE_CTRL_GIO_DIS; 6826 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl); 6827 6828 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc); 6829 } else { 6830 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0); 6831 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0); 6832 } 6833 6834 switch (hw->mac.type) { 6835 case ixgbe_mac_82598EB: 6836 pci_wake_from_d3(pdev, false); 6837 break; 6838 case ixgbe_mac_82599EB: 6839 case ixgbe_mac_X540: 6840 case ixgbe_mac_X550: 6841 case ixgbe_mac_X550EM_x: 6842 case ixgbe_mac_x550em_a: 6843 pci_wake_from_d3(pdev, !!wufc); 6844 break; 6845 default: 6846 break; 6847 } 6848 6849 *enable_wake = !!wufc; 6850 if (hw->phy.ops.set_phy_power && !*enable_wake) 6851 hw->phy.ops.set_phy_power(hw, false); 6852 6853 ixgbe_release_hw_control(adapter); 6854 6855 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) 6856 pci_disable_device(pdev); 6857 6858 return 0; 6859 } 6860 6861 #ifdef CONFIG_PM 6862 static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state) 6863 { 6864 int retval; 6865 bool wake; 6866 6867 retval = __ixgbe_shutdown(pdev, &wake); 6868 if (retval) 6869 return retval; 6870 6871 if (wake) { 6872 pci_prepare_to_sleep(pdev); 6873 } else { 6874 pci_wake_from_d3(pdev, false); 6875 pci_set_power_state(pdev, PCI_D3hot); 6876 } 6877 6878 return 0; 6879 } 6880 #endif /* CONFIG_PM */ 6881 6882 static void ixgbe_shutdown(struct pci_dev *pdev) 6883 { 6884 bool wake; 6885 6886 __ixgbe_shutdown(pdev, &wake); 6887 6888 if (system_state == SYSTEM_POWER_OFF) { 6889 pci_wake_from_d3(pdev, wake); 6890 pci_set_power_state(pdev, PCI_D3hot); 6891 } 6892 } 6893 6894 /** 6895 * ixgbe_update_stats - Update the board statistics counters. 6896 * @adapter: board private structure 6897 **/ 6898 void ixgbe_update_stats(struct ixgbe_adapter *adapter) 6899 { 6900 struct net_device *netdev = adapter->netdev; 6901 struct ixgbe_hw *hw = &adapter->hw; 6902 struct ixgbe_hw_stats *hwstats = &adapter->stats; 6903 u64 total_mpc = 0; 6904 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; 6905 u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0; 6906 u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0; 6907 u64 alloc_rx_page = 0; 6908 u64 bytes = 0, packets = 0, hw_csum_rx_error = 0; 6909 6910 if (test_bit(__IXGBE_DOWN, &adapter->state) || 6911 test_bit(__IXGBE_RESETTING, &adapter->state)) 6912 return; 6913 6914 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) { 6915 u64 rsc_count = 0; 6916 u64 rsc_flush = 0; 6917 for (i = 0; i < adapter->num_rx_queues; i++) { 6918 rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count; 6919 rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush; 6920 } 6921 adapter->rsc_total_count = rsc_count; 6922 adapter->rsc_total_flush = rsc_flush; 6923 } 6924 6925 for (i = 0; i < adapter->num_rx_queues; i++) { 6926 struct ixgbe_ring *rx_ring = adapter->rx_ring[i]; 6927 non_eop_descs += rx_ring->rx_stats.non_eop_descs; 6928 alloc_rx_page += rx_ring->rx_stats.alloc_rx_page; 6929 alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed; 6930 alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed; 6931 hw_csum_rx_error += rx_ring->rx_stats.csum_err; 6932 bytes += rx_ring->stats.bytes; 6933 packets += rx_ring->stats.packets; 6934 } 6935 adapter->non_eop_descs = non_eop_descs; 6936 adapter->alloc_rx_page = alloc_rx_page; 6937 adapter->alloc_rx_page_failed = alloc_rx_page_failed; 6938 adapter->alloc_rx_buff_failed = alloc_rx_buff_failed; 6939 adapter->hw_csum_rx_error = hw_csum_rx_error; 6940 netdev->stats.rx_bytes = bytes; 6941 netdev->stats.rx_packets = packets; 6942 6943 bytes = 0; 6944 packets = 0; 6945 /* gather some stats to the adapter struct that are per queue */ 6946 for (i = 0; i < adapter->num_tx_queues; i++) { 6947 struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; 6948 restart_queue += tx_ring->tx_stats.restart_queue; 6949 tx_busy += tx_ring->tx_stats.tx_busy; 6950 bytes += tx_ring->stats.bytes; 6951 packets += tx_ring->stats.packets; 6952 } 6953 for (i = 0; i < adapter->num_xdp_queues; i++) { 6954 struct ixgbe_ring *xdp_ring = adapter->xdp_ring[i]; 6955 6956 restart_queue += xdp_ring->tx_stats.restart_queue; 6957 tx_busy += xdp_ring->tx_stats.tx_busy; 6958 bytes += xdp_ring->stats.bytes; 6959 packets += xdp_ring->stats.packets; 6960 } 6961 adapter->restart_queue = restart_queue; 6962 adapter->tx_busy = tx_busy; 6963 netdev->stats.tx_bytes = bytes; 6964 netdev->stats.tx_packets = packets; 6965 6966 hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); 6967 6968 /* 8 register reads */ 6969 for (i = 0; i < 8; i++) { 6970 /* for packet buffers not used, the register should read 0 */ 6971 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); 6972 missed_rx += mpc; 6973 hwstats->mpc[i] += mpc; 6974 total_mpc += hwstats->mpc[i]; 6975 hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i)); 6976 hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i)); 6977 switch (hw->mac.type) { 6978 case ixgbe_mac_82598EB: 6979 hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); 6980 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i)); 6981 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i)); 6982 hwstats->pxonrxc[i] += 6983 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i)); 6984 break; 6985 case ixgbe_mac_82599EB: 6986 case ixgbe_mac_X540: 6987 case ixgbe_mac_X550: 6988 case ixgbe_mac_X550EM_x: 6989 case ixgbe_mac_x550em_a: 6990 hwstats->pxonrxc[i] += 6991 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i)); 6992 break; 6993 default: 6994 break; 6995 } 6996 } 6997 6998 /*16 register reads */ 6999 for (i = 0; i < 16; i++) { 7000 hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i)); 7001 hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i)); 7002 if ((hw->mac.type == ixgbe_mac_82599EB) || 7003 (hw->mac.type == ixgbe_mac_X540) || 7004 (hw->mac.type == ixgbe_mac_X550) || 7005 (hw->mac.type == ixgbe_mac_X550EM_x) || 7006 (hw->mac.type == ixgbe_mac_x550em_a)) { 7007 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC_L(i)); 7008 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); /* to clear */ 7009 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC_L(i)); 7010 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); /* to clear */ 7011 } 7012 } 7013 7014 hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); 7015 /* work around hardware counting issue */ 7016 hwstats->gprc -= missed_rx; 7017 7018 ixgbe_update_xoff_received(adapter); 7019 7020 /* 82598 hardware only has a 32 bit counter in the high register */ 7021 switch (hw->mac.type) { 7022 case ixgbe_mac_82598EB: 7023 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); 7024 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); 7025 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); 7026 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH); 7027 break; 7028 case ixgbe_mac_X540: 7029 case ixgbe_mac_X550: 7030 case ixgbe_mac_X550EM_x: 7031 case ixgbe_mac_x550em_a: 7032 /* OS2BMC stats are X540 and later */ 7033 hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC); 7034 hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC); 7035 hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC); 7036 hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC); 7037 /* fall through */ 7038 case ixgbe_mac_82599EB: 7039 for (i = 0; i < 16; i++) 7040 adapter->hw_rx_no_dma_resources += 7041 IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); 7042 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL); 7043 IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */ 7044 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL); 7045 IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */ 7046 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL); 7047 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */ 7048 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); 7049 hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH); 7050 hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS); 7051 #ifdef IXGBE_FCOE 7052 hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC); 7053 hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC); 7054 hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC); 7055 hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC); 7056 hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC); 7057 hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC); 7058 /* Add up per cpu counters for total ddp aloc fail */ 7059 if (adapter->fcoe.ddp_pool) { 7060 struct ixgbe_fcoe *fcoe = &adapter->fcoe; 7061 struct ixgbe_fcoe_ddp_pool *ddp_pool; 7062 unsigned int cpu; 7063 u64 noddp = 0, noddp_ext_buff = 0; 7064 for_each_possible_cpu(cpu) { 7065 ddp_pool = per_cpu_ptr(fcoe->ddp_pool, cpu); 7066 noddp += ddp_pool->noddp; 7067 noddp_ext_buff += ddp_pool->noddp_ext_buff; 7068 } 7069 hwstats->fcoe_noddp = noddp; 7070 hwstats->fcoe_noddp_ext_buff = noddp_ext_buff; 7071 } 7072 #endif /* IXGBE_FCOE */ 7073 break; 7074 default: 7075 break; 7076 } 7077 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); 7078 hwstats->bprc += bprc; 7079 hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); 7080 if (hw->mac.type == ixgbe_mac_82598EB) 7081 hwstats->mprc -= bprc; 7082 hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC); 7083 hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); 7084 hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); 7085 hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); 7086 hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); 7087 hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); 7088 hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); 7089 hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); 7090 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); 7091 hwstats->lxontxc += lxon; 7092 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); 7093 hwstats->lxofftxc += lxoff; 7094 hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); 7095 hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); 7096 /* 7097 * 82598 errata - tx of flow control packets is included in tx counters 7098 */ 7099 xon_off_tot = lxon + lxoff; 7100 hwstats->gptc -= xon_off_tot; 7101 hwstats->mptc -= xon_off_tot; 7102 hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); 7103 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC); 7104 hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC); 7105 hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC); 7106 hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR); 7107 hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); 7108 hwstats->ptc64 -= xon_off_tot; 7109 hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); 7110 hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); 7111 hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); 7112 hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); 7113 hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); 7114 hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); 7115 7116 /* Fill out the OS statistics structure */ 7117 netdev->stats.multicast = hwstats->mprc; 7118 7119 /* Rx Errors */ 7120 netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec; 7121 netdev->stats.rx_dropped = 0; 7122 netdev->stats.rx_length_errors = hwstats->rlec; 7123 netdev->stats.rx_crc_errors = hwstats->crcerrs; 7124 netdev->stats.rx_missed_errors = total_mpc; 7125 } 7126 7127 /** 7128 * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table 7129 * @adapter: pointer to the device adapter structure 7130 **/ 7131 static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter) 7132 { 7133 struct ixgbe_hw *hw = &adapter->hw; 7134 int i; 7135 7136 if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT)) 7137 return; 7138 7139 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 7140 7141 /* if interface is down do nothing */ 7142 if (test_bit(__IXGBE_DOWN, &adapter->state)) 7143 return; 7144 7145 /* do nothing if we are not using signature filters */ 7146 if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)) 7147 return; 7148 7149 adapter->fdir_overflow++; 7150 7151 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) { 7152 for (i = 0; i < adapter->num_tx_queues; i++) 7153 set_bit(__IXGBE_TX_FDIR_INIT_DONE, 7154 &(adapter->tx_ring[i]->state)); 7155 for (i = 0; i < adapter->num_xdp_queues; i++) 7156 set_bit(__IXGBE_TX_FDIR_INIT_DONE, 7157 &adapter->xdp_ring[i]->state); 7158 /* re-enable flow director interrupts */ 7159 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR); 7160 } else { 7161 e_err(probe, "failed to finish FDIR re-initialization, " 7162 "ignored adding FDIR ATR filters\n"); 7163 } 7164 } 7165 7166 /** 7167 * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts 7168 * @adapter: pointer to the device adapter structure 7169 * 7170 * This function serves two purposes. First it strobes the interrupt lines 7171 * in order to make certain interrupts are occurring. Secondly it sets the 7172 * bits needed to check for TX hangs. As a result we should immediately 7173 * determine if a hang has occurred. 7174 */ 7175 static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter) 7176 { 7177 struct ixgbe_hw *hw = &adapter->hw; 7178 u64 eics = 0; 7179 int i; 7180 7181 /* If we're down, removing or resetting, just bail */ 7182 if (test_bit(__IXGBE_DOWN, &adapter->state) || 7183 test_bit(__IXGBE_REMOVING, &adapter->state) || 7184 test_bit(__IXGBE_RESETTING, &adapter->state)) 7185 return; 7186 7187 /* Force detection of hung controller */ 7188 if (netif_carrier_ok(adapter->netdev)) { 7189 for (i = 0; i < adapter->num_tx_queues; i++) 7190 set_check_for_tx_hang(adapter->tx_ring[i]); 7191 for (i = 0; i < adapter->num_xdp_queues; i++) 7192 set_check_for_tx_hang(adapter->xdp_ring[i]); 7193 } 7194 7195 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { 7196 /* 7197 * for legacy and MSI interrupts don't set any bits 7198 * that are enabled for EIAM, because this operation 7199 * would set *both* EIMS and EICS for any bit in EIAM 7200 */ 7201 IXGBE_WRITE_REG(hw, IXGBE_EICS, 7202 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); 7203 } else { 7204 /* get one bit for every active tx/rx interrupt vector */ 7205 for (i = 0; i < adapter->num_q_vectors; i++) { 7206 struct ixgbe_q_vector *qv = adapter->q_vector[i]; 7207 if (qv->rx.ring || qv->tx.ring) 7208 eics |= BIT_ULL(i); 7209 } 7210 } 7211 7212 /* Cause software interrupt to ensure rings are cleaned */ 7213 ixgbe_irq_rearm_queues(adapter, eics); 7214 } 7215 7216 /** 7217 * ixgbe_watchdog_update_link - update the link status 7218 * @adapter: pointer to the device adapter structure 7219 * @link_speed: pointer to a u32 to store the link_speed 7220 **/ 7221 static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter) 7222 { 7223 struct ixgbe_hw *hw = &adapter->hw; 7224 u32 link_speed = adapter->link_speed; 7225 bool link_up = adapter->link_up; 7226 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 7227 7228 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)) 7229 return; 7230 7231 if (hw->mac.ops.check_link) { 7232 hw->mac.ops.check_link(hw, &link_speed, &link_up, false); 7233 } else { 7234 /* always assume link is up, if no check link function */ 7235 link_speed = IXGBE_LINK_SPEED_10GB_FULL; 7236 link_up = true; 7237 } 7238 7239 if (adapter->ixgbe_ieee_pfc) 7240 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 7241 7242 if (link_up && !((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && pfc_en)) { 7243 hw->mac.ops.fc_enable(hw); 7244 ixgbe_set_rx_drop_en(adapter); 7245 } 7246 7247 if (link_up || 7248 time_after(jiffies, (adapter->link_check_timeout + 7249 IXGBE_TRY_LINK_TIMEOUT))) { 7250 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; 7251 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC); 7252 IXGBE_WRITE_FLUSH(hw); 7253 } 7254 7255 adapter->link_up = link_up; 7256 adapter->link_speed = link_speed; 7257 } 7258 7259 static void ixgbe_update_default_up(struct ixgbe_adapter *adapter) 7260 { 7261 #ifdef CONFIG_IXGBE_DCB 7262 struct net_device *netdev = adapter->netdev; 7263 struct dcb_app app = { 7264 .selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE, 7265 .protocol = 0, 7266 }; 7267 u8 up = 0; 7268 7269 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) 7270 up = dcb_ieee_getapp_mask(netdev, &app); 7271 7272 adapter->default_up = (up > 1) ? (ffs(up) - 1) : 0; 7273 #endif 7274 } 7275 7276 static int ixgbe_enable_macvlan(struct net_device *upper, void *data) 7277 { 7278 if (netif_is_macvlan(upper)) { 7279 struct macvlan_dev *vlan = netdev_priv(upper); 7280 7281 if (vlan->fwd_priv) 7282 netif_tx_wake_all_queues(upper); 7283 } 7284 7285 return 0; 7286 } 7287 7288 /** 7289 * ixgbe_watchdog_link_is_up - update netif_carrier status and 7290 * print link up message 7291 * @adapter: pointer to the device adapter structure 7292 **/ 7293 static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter) 7294 { 7295 struct net_device *netdev = adapter->netdev; 7296 struct ixgbe_hw *hw = &adapter->hw; 7297 u32 link_speed = adapter->link_speed; 7298 const char *speed_str; 7299 bool flow_rx, flow_tx; 7300 7301 /* only continue if link was previously down */ 7302 if (netif_carrier_ok(netdev)) 7303 return; 7304 7305 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; 7306 7307 switch (hw->mac.type) { 7308 case ixgbe_mac_82598EB: { 7309 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 7310 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS); 7311 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE); 7312 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X); 7313 } 7314 break; 7315 case ixgbe_mac_X540: 7316 case ixgbe_mac_X550: 7317 case ixgbe_mac_X550EM_x: 7318 case ixgbe_mac_x550em_a: 7319 case ixgbe_mac_82599EB: { 7320 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN); 7321 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG); 7322 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE); 7323 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X); 7324 } 7325 break; 7326 default: 7327 flow_tx = false; 7328 flow_rx = false; 7329 break; 7330 } 7331 7332 adapter->last_rx_ptp_check = jiffies; 7333 7334 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 7335 ixgbe_ptp_start_cyclecounter(adapter); 7336 7337 switch (link_speed) { 7338 case IXGBE_LINK_SPEED_10GB_FULL: 7339 speed_str = "10 Gbps"; 7340 break; 7341 case IXGBE_LINK_SPEED_2_5GB_FULL: 7342 speed_str = "2.5 Gbps"; 7343 break; 7344 case IXGBE_LINK_SPEED_1GB_FULL: 7345 speed_str = "1 Gbps"; 7346 break; 7347 case IXGBE_LINK_SPEED_100_FULL: 7348 speed_str = "100 Mbps"; 7349 break; 7350 case IXGBE_LINK_SPEED_10_FULL: 7351 speed_str = "10 Mbps"; 7352 break; 7353 default: 7354 speed_str = "unknown speed"; 7355 break; 7356 } 7357 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n", speed_str, 7358 ((flow_rx && flow_tx) ? "RX/TX" : 7359 (flow_rx ? "RX" : 7360 (flow_tx ? "TX" : "None")))); 7361 7362 netif_carrier_on(netdev); 7363 ixgbe_check_vf_rate_limit(adapter); 7364 7365 /* enable transmits */ 7366 netif_tx_wake_all_queues(adapter->netdev); 7367 7368 /* enable any upper devices */ 7369 rtnl_lock(); 7370 netdev_walk_all_upper_dev_rcu(adapter->netdev, 7371 ixgbe_enable_macvlan, NULL); 7372 rtnl_unlock(); 7373 7374 /* update the default user priority for VFs */ 7375 ixgbe_update_default_up(adapter); 7376 7377 /* ping all the active vfs to let them know link has changed */ 7378 ixgbe_ping_all_vfs(adapter); 7379 } 7380 7381 /** 7382 * ixgbe_watchdog_link_is_down - update netif_carrier status and 7383 * print link down message 7384 * @adapter: pointer to the adapter structure 7385 **/ 7386 static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *adapter) 7387 { 7388 struct net_device *netdev = adapter->netdev; 7389 struct ixgbe_hw *hw = &adapter->hw; 7390 7391 adapter->link_up = false; 7392 adapter->link_speed = 0; 7393 7394 /* only continue if link was up previously */ 7395 if (!netif_carrier_ok(netdev)) 7396 return; 7397 7398 /* poll for SFP+ cable when link is down */ 7399 if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB) 7400 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; 7401 7402 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 7403 ixgbe_ptp_start_cyclecounter(adapter); 7404 7405 e_info(drv, "NIC Link is Down\n"); 7406 netif_carrier_off(netdev); 7407 7408 /* ping all the active vfs to let them know link has changed */ 7409 ixgbe_ping_all_vfs(adapter); 7410 } 7411 7412 static bool ixgbe_ring_tx_pending(struct ixgbe_adapter *adapter) 7413 { 7414 int i; 7415 7416 for (i = 0; i < adapter->num_tx_queues; i++) { 7417 struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; 7418 7419 if (tx_ring->next_to_use != tx_ring->next_to_clean) 7420 return true; 7421 } 7422 7423 for (i = 0; i < adapter->num_xdp_queues; i++) { 7424 struct ixgbe_ring *ring = adapter->xdp_ring[i]; 7425 7426 if (ring->next_to_use != ring->next_to_clean) 7427 return true; 7428 } 7429 7430 return false; 7431 } 7432 7433 static bool ixgbe_vf_tx_pending(struct ixgbe_adapter *adapter) 7434 { 7435 struct ixgbe_hw *hw = &adapter->hw; 7436 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 7437 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 7438 7439 int i, j; 7440 7441 if (!adapter->num_vfs) 7442 return false; 7443 7444 /* resetting the PF is only needed for MAC before X550 */ 7445 if (hw->mac.type >= ixgbe_mac_X550) 7446 return false; 7447 7448 for (i = 0; i < adapter->num_vfs; i++) { 7449 for (j = 0; j < q_per_pool; j++) { 7450 u32 h, t; 7451 7452 h = IXGBE_READ_REG(hw, IXGBE_PVFTDHN(q_per_pool, i, j)); 7453 t = IXGBE_READ_REG(hw, IXGBE_PVFTDTN(q_per_pool, i, j)); 7454 7455 if (h != t) 7456 return true; 7457 } 7458 } 7459 7460 return false; 7461 } 7462 7463 /** 7464 * ixgbe_watchdog_flush_tx - flush queues on link down 7465 * @adapter: pointer to the device adapter structure 7466 **/ 7467 static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter) 7468 { 7469 if (!netif_carrier_ok(adapter->netdev)) { 7470 if (ixgbe_ring_tx_pending(adapter) || 7471 ixgbe_vf_tx_pending(adapter)) { 7472 /* We've lost link, so the controller stops DMA, 7473 * but we've got queued Tx work that's never going 7474 * to get done, so reset controller to flush Tx. 7475 * (Do the reset outside of interrupt context). 7476 */ 7477 e_warn(drv, "initiating reset to clear Tx work after link loss\n"); 7478 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 7479 } 7480 } 7481 } 7482 7483 #ifdef CONFIG_PCI_IOV 7484 static void ixgbe_check_for_bad_vf(struct ixgbe_adapter *adapter) 7485 { 7486 struct ixgbe_hw *hw = &adapter->hw; 7487 struct pci_dev *pdev = adapter->pdev; 7488 unsigned int vf; 7489 u32 gpc; 7490 7491 if (!(netif_carrier_ok(adapter->netdev))) 7492 return; 7493 7494 gpc = IXGBE_READ_REG(hw, IXGBE_TXDGPC); 7495 if (gpc) /* If incrementing then no need for the check below */ 7496 return; 7497 /* Check to see if a bad DMA write target from an errant or 7498 * malicious VF has caused a PCIe error. If so then we can 7499 * issue a VFLR to the offending VF(s) and then resume without 7500 * requesting a full slot reset. 7501 */ 7502 7503 if (!pdev) 7504 return; 7505 7506 /* check status reg for all VFs owned by this PF */ 7507 for (vf = 0; vf < adapter->num_vfs; ++vf) { 7508 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev; 7509 u16 status_reg; 7510 7511 if (!vfdev) 7512 continue; 7513 pci_read_config_word(vfdev, PCI_STATUS, &status_reg); 7514 if (status_reg != IXGBE_FAILED_READ_CFG_WORD && 7515 status_reg & PCI_STATUS_REC_MASTER_ABORT) 7516 pcie_flr(vfdev); 7517 } 7518 } 7519 7520 static void ixgbe_spoof_check(struct ixgbe_adapter *adapter) 7521 { 7522 u32 ssvpc; 7523 7524 /* Do not perform spoof check for 82598 or if not in IOV mode */ 7525 if (adapter->hw.mac.type == ixgbe_mac_82598EB || 7526 adapter->num_vfs == 0) 7527 return; 7528 7529 ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC); 7530 7531 /* 7532 * ssvpc register is cleared on read, if zero then no 7533 * spoofed packets in the last interval. 7534 */ 7535 if (!ssvpc) 7536 return; 7537 7538 e_warn(drv, "%u Spoofed packets detected\n", ssvpc); 7539 } 7540 #else 7541 static void ixgbe_spoof_check(struct ixgbe_adapter __always_unused *adapter) 7542 { 7543 } 7544 7545 static void 7546 ixgbe_check_for_bad_vf(struct ixgbe_adapter __always_unused *adapter) 7547 { 7548 } 7549 #endif /* CONFIG_PCI_IOV */ 7550 7551 7552 /** 7553 * ixgbe_watchdog_subtask - check and bring link up 7554 * @adapter: pointer to the device adapter structure 7555 **/ 7556 static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter) 7557 { 7558 /* if interface is down, removing or resetting, do nothing */ 7559 if (test_bit(__IXGBE_DOWN, &adapter->state) || 7560 test_bit(__IXGBE_REMOVING, &adapter->state) || 7561 test_bit(__IXGBE_RESETTING, &adapter->state)) 7562 return; 7563 7564 ixgbe_watchdog_update_link(adapter); 7565 7566 if (adapter->link_up) 7567 ixgbe_watchdog_link_is_up(adapter); 7568 else 7569 ixgbe_watchdog_link_is_down(adapter); 7570 7571 ixgbe_check_for_bad_vf(adapter); 7572 ixgbe_spoof_check(adapter); 7573 ixgbe_update_stats(adapter); 7574 7575 ixgbe_watchdog_flush_tx(adapter); 7576 } 7577 7578 /** 7579 * ixgbe_sfp_detection_subtask - poll for SFP+ cable 7580 * @adapter: the ixgbe adapter structure 7581 **/ 7582 static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter) 7583 { 7584 struct ixgbe_hw *hw = &adapter->hw; 7585 s32 err; 7586 7587 /* not searching for SFP so there is nothing to do here */ 7588 if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) && 7589 !(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) 7590 return; 7591 7592 if (adapter->sfp_poll_time && 7593 time_after(adapter->sfp_poll_time, jiffies)) 7594 return; /* If not yet time to poll for SFP */ 7595 7596 /* someone else is in init, wait until next service event */ 7597 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 7598 return; 7599 7600 adapter->sfp_poll_time = jiffies + IXGBE_SFP_POLL_JIFFIES - 1; 7601 7602 err = hw->phy.ops.identify_sfp(hw); 7603 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) 7604 goto sfp_out; 7605 7606 if (err == IXGBE_ERR_SFP_NOT_PRESENT) { 7607 /* If no cable is present, then we need to reset 7608 * the next time we find a good cable. */ 7609 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 7610 } 7611 7612 /* exit on error */ 7613 if (err) 7614 goto sfp_out; 7615 7616 /* exit if reset not needed */ 7617 if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) 7618 goto sfp_out; 7619 7620 adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET; 7621 7622 /* 7623 * A module may be identified correctly, but the EEPROM may not have 7624 * support for that module. setup_sfp() will fail in that case, so 7625 * we should not allow that module to load. 7626 */ 7627 if (hw->mac.type == ixgbe_mac_82598EB) 7628 err = hw->phy.ops.reset(hw); 7629 else 7630 err = hw->mac.ops.setup_sfp(hw); 7631 7632 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) 7633 goto sfp_out; 7634 7635 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; 7636 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type); 7637 7638 sfp_out: 7639 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 7640 7641 if ((err == IXGBE_ERR_SFP_NOT_SUPPORTED) && 7642 (adapter->netdev->reg_state == NETREG_REGISTERED)) { 7643 e_dev_err("failed to initialize because an unsupported " 7644 "SFP+ module type was detected.\n"); 7645 e_dev_err("Reload the driver after installing a " 7646 "supported module.\n"); 7647 unregister_netdev(adapter->netdev); 7648 } 7649 } 7650 7651 /** 7652 * ixgbe_sfp_link_config_subtask - set up link SFP after module install 7653 * @adapter: the ixgbe adapter structure 7654 **/ 7655 static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter) 7656 { 7657 struct ixgbe_hw *hw = &adapter->hw; 7658 u32 speed; 7659 bool autoneg = false; 7660 7661 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG)) 7662 return; 7663 7664 /* someone else is in init, wait until next service event */ 7665 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 7666 return; 7667 7668 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; 7669 7670 speed = hw->phy.autoneg_advertised; 7671 if ((!speed) && (hw->mac.ops.get_link_capabilities)) { 7672 hw->mac.ops.get_link_capabilities(hw, &speed, &autoneg); 7673 7674 /* setup the highest link when no autoneg */ 7675 if (!autoneg) { 7676 if (speed & IXGBE_LINK_SPEED_10GB_FULL) 7677 speed = IXGBE_LINK_SPEED_10GB_FULL; 7678 } 7679 } 7680 7681 if (hw->mac.ops.setup_link) 7682 hw->mac.ops.setup_link(hw, speed, true); 7683 7684 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 7685 adapter->link_check_timeout = jiffies; 7686 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 7687 } 7688 7689 /** 7690 * ixgbe_service_timer - Timer Call-back 7691 * @data: pointer to adapter cast into an unsigned long 7692 **/ 7693 static void ixgbe_service_timer(struct timer_list *t) 7694 { 7695 struct ixgbe_adapter *adapter = from_timer(adapter, t, service_timer); 7696 unsigned long next_event_offset; 7697 7698 /* poll faster when waiting for link */ 7699 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) 7700 next_event_offset = HZ / 10; 7701 else 7702 next_event_offset = HZ * 2; 7703 7704 /* Reset the timer */ 7705 mod_timer(&adapter->service_timer, next_event_offset + jiffies); 7706 7707 ixgbe_service_event_schedule(adapter); 7708 } 7709 7710 static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter *adapter) 7711 { 7712 struct ixgbe_hw *hw = &adapter->hw; 7713 u32 status; 7714 7715 if (!(adapter->flags2 & IXGBE_FLAG2_PHY_INTERRUPT)) 7716 return; 7717 7718 adapter->flags2 &= ~IXGBE_FLAG2_PHY_INTERRUPT; 7719 7720 if (!hw->phy.ops.handle_lasi) 7721 return; 7722 7723 status = hw->phy.ops.handle_lasi(&adapter->hw); 7724 if (status != IXGBE_ERR_OVERTEMP) 7725 return; 7726 7727 e_crit(drv, "%s\n", ixgbe_overheat_msg); 7728 } 7729 7730 static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter) 7731 { 7732 if (!test_and_clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state)) 7733 return; 7734 7735 /* If we're already down, removing or resetting, just bail */ 7736 if (test_bit(__IXGBE_DOWN, &adapter->state) || 7737 test_bit(__IXGBE_REMOVING, &adapter->state) || 7738 test_bit(__IXGBE_RESETTING, &adapter->state)) 7739 return; 7740 7741 ixgbe_dump(adapter); 7742 netdev_err(adapter->netdev, "Reset adapter\n"); 7743 adapter->tx_timeout_count++; 7744 7745 rtnl_lock(); 7746 ixgbe_reinit_locked(adapter); 7747 rtnl_unlock(); 7748 } 7749 7750 /** 7751 * ixgbe_service_task - manages and runs subtasks 7752 * @work: pointer to work_struct containing our data 7753 **/ 7754 static void ixgbe_service_task(struct work_struct *work) 7755 { 7756 struct ixgbe_adapter *adapter = container_of(work, 7757 struct ixgbe_adapter, 7758 service_task); 7759 if (ixgbe_removed(adapter->hw.hw_addr)) { 7760 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 7761 rtnl_lock(); 7762 ixgbe_down(adapter); 7763 rtnl_unlock(); 7764 } 7765 ixgbe_service_event_complete(adapter); 7766 return; 7767 } 7768 if (adapter->flags2 & IXGBE_FLAG2_UDP_TUN_REREG_NEEDED) { 7769 rtnl_lock(); 7770 adapter->flags2 &= ~IXGBE_FLAG2_UDP_TUN_REREG_NEEDED; 7771 udp_tunnel_get_rx_info(adapter->netdev); 7772 rtnl_unlock(); 7773 } 7774 ixgbe_reset_subtask(adapter); 7775 ixgbe_phy_interrupt_subtask(adapter); 7776 ixgbe_sfp_detection_subtask(adapter); 7777 ixgbe_sfp_link_config_subtask(adapter); 7778 ixgbe_check_overtemp_subtask(adapter); 7779 ixgbe_watchdog_subtask(adapter); 7780 ixgbe_fdir_reinit_subtask(adapter); 7781 ixgbe_check_hang_subtask(adapter); 7782 7783 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) { 7784 ixgbe_ptp_overflow_check(adapter); 7785 ixgbe_ptp_rx_hang(adapter); 7786 ixgbe_ptp_tx_hang(adapter); 7787 } 7788 7789 ixgbe_service_event_complete(adapter); 7790 } 7791 7792 static int ixgbe_tso(struct ixgbe_ring *tx_ring, 7793 struct ixgbe_tx_buffer *first, 7794 u8 *hdr_len) 7795 { 7796 u32 vlan_macip_lens, type_tucmd, mss_l4len_idx; 7797 struct sk_buff *skb = first->skb; 7798 union { 7799 struct iphdr *v4; 7800 struct ipv6hdr *v6; 7801 unsigned char *hdr; 7802 } ip; 7803 union { 7804 struct tcphdr *tcp; 7805 unsigned char *hdr; 7806 } l4; 7807 u32 paylen, l4_offset; 7808 int err; 7809 7810 if (skb->ip_summed != CHECKSUM_PARTIAL) 7811 return 0; 7812 7813 if (!skb_is_gso(skb)) 7814 return 0; 7815 7816 err = skb_cow_head(skb, 0); 7817 if (err < 0) 7818 return err; 7819 7820 if (eth_p_mpls(first->protocol)) 7821 ip.hdr = skb_inner_network_header(skb); 7822 else 7823 ip.hdr = skb_network_header(skb); 7824 l4.hdr = skb_checksum_start(skb); 7825 7826 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ 7827 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP; 7828 7829 /* initialize outer IP header fields */ 7830 if (ip.v4->version == 4) { 7831 unsigned char *csum_start = skb_checksum_start(skb); 7832 unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4); 7833 7834 /* IP header will have to cancel out any data that 7835 * is not a part of the outer IP header 7836 */ 7837 ip.v4->check = csum_fold(csum_partial(trans_start, 7838 csum_start - trans_start, 7839 0)); 7840 type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4; 7841 7842 ip.v4->tot_len = 0; 7843 first->tx_flags |= IXGBE_TX_FLAGS_TSO | 7844 IXGBE_TX_FLAGS_CSUM | 7845 IXGBE_TX_FLAGS_IPV4; 7846 } else { 7847 ip.v6->payload_len = 0; 7848 first->tx_flags |= IXGBE_TX_FLAGS_TSO | 7849 IXGBE_TX_FLAGS_CSUM; 7850 } 7851 7852 /* determine offset of inner transport header */ 7853 l4_offset = l4.hdr - skb->data; 7854 7855 /* compute length of segmentation header */ 7856 *hdr_len = (l4.tcp->doff * 4) + l4_offset; 7857 7858 /* remove payload length from inner checksum */ 7859 paylen = skb->len - l4_offset; 7860 csum_replace_by_diff(&l4.tcp->check, htonl(paylen)); 7861 7862 /* update gso size and bytecount with header size */ 7863 first->gso_segs = skb_shinfo(skb)->gso_segs; 7864 first->bytecount += (first->gso_segs - 1) * *hdr_len; 7865 7866 /* mss_l4len_id: use 0 as index for TSO */ 7867 mss_l4len_idx = (*hdr_len - l4_offset) << IXGBE_ADVTXD_L4LEN_SHIFT; 7868 mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT; 7869 7870 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */ 7871 vlan_macip_lens = l4.hdr - ip.hdr; 7872 vlan_macip_lens |= (ip.hdr - skb->data) << IXGBE_ADVTXD_MACLEN_SHIFT; 7873 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; 7874 7875 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0, type_tucmd, 7876 mss_l4len_idx); 7877 7878 return 1; 7879 } 7880 7881 static inline bool ixgbe_ipv6_csum_is_sctp(struct sk_buff *skb) 7882 { 7883 unsigned int offset = 0; 7884 7885 ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL); 7886 7887 return offset == skb_checksum_start_offset(skb); 7888 } 7889 7890 static void ixgbe_tx_csum(struct ixgbe_ring *tx_ring, 7891 struct ixgbe_tx_buffer *first) 7892 { 7893 struct sk_buff *skb = first->skb; 7894 u32 vlan_macip_lens = 0; 7895 u32 type_tucmd = 0; 7896 7897 if (skb->ip_summed != CHECKSUM_PARTIAL) { 7898 csum_failed: 7899 if (!(first->tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | 7900 IXGBE_TX_FLAGS_CC))) 7901 return; 7902 goto no_csum; 7903 } 7904 7905 switch (skb->csum_offset) { 7906 case offsetof(struct tcphdr, check): 7907 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP; 7908 /* fall through */ 7909 case offsetof(struct udphdr, check): 7910 break; 7911 case offsetof(struct sctphdr, checksum): 7912 /* validate that this is actually an SCTP request */ 7913 if (((first->protocol == htons(ETH_P_IP)) && 7914 (ip_hdr(skb)->protocol == IPPROTO_SCTP)) || 7915 ((first->protocol == htons(ETH_P_IPV6)) && 7916 ixgbe_ipv6_csum_is_sctp(skb))) { 7917 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_SCTP; 7918 break; 7919 } 7920 /* fall through */ 7921 default: 7922 skb_checksum_help(skb); 7923 goto csum_failed; 7924 } 7925 7926 /* update TX checksum flag */ 7927 first->tx_flags |= IXGBE_TX_FLAGS_CSUM; 7928 vlan_macip_lens = skb_checksum_start_offset(skb) - 7929 skb_network_offset(skb); 7930 no_csum: 7931 /* vlan_macip_lens: MACLEN, VLAN tag */ 7932 vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT; 7933 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; 7934 7935 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0, type_tucmd, 0); 7936 } 7937 7938 #define IXGBE_SET_FLAG(_input, _flag, _result) \ 7939 ((_flag <= _result) ? \ 7940 ((u32)(_input & _flag) * (_result / _flag)) : \ 7941 ((u32)(_input & _flag) / (_flag / _result))) 7942 7943 static u32 ixgbe_tx_cmd_type(struct sk_buff *skb, u32 tx_flags) 7944 { 7945 /* set type for advanced descriptor with frame checksum insertion */ 7946 u32 cmd_type = IXGBE_ADVTXD_DTYP_DATA | 7947 IXGBE_ADVTXD_DCMD_DEXT | 7948 IXGBE_ADVTXD_DCMD_IFCS; 7949 7950 /* set HW vlan bit if vlan is present */ 7951 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_HW_VLAN, 7952 IXGBE_ADVTXD_DCMD_VLE); 7953 7954 /* set segmentation enable bits for TSO/FSO */ 7955 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSO, 7956 IXGBE_ADVTXD_DCMD_TSE); 7957 7958 /* set timestamp bit if present */ 7959 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSTAMP, 7960 IXGBE_ADVTXD_MAC_TSTAMP); 7961 7962 /* insert frame checksum */ 7963 cmd_type ^= IXGBE_SET_FLAG(skb->no_fcs, 1, IXGBE_ADVTXD_DCMD_IFCS); 7964 7965 return cmd_type; 7966 } 7967 7968 static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc, 7969 u32 tx_flags, unsigned int paylen) 7970 { 7971 u32 olinfo_status = paylen << IXGBE_ADVTXD_PAYLEN_SHIFT; 7972 7973 /* enable L4 checksum for TSO and TX checksum offload */ 7974 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 7975 IXGBE_TX_FLAGS_CSUM, 7976 IXGBE_ADVTXD_POPTS_TXSM); 7977 7978 /* enble IPv4 checksum for TSO */ 7979 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 7980 IXGBE_TX_FLAGS_IPV4, 7981 IXGBE_ADVTXD_POPTS_IXSM); 7982 7983 /* 7984 * Check Context must be set if Tx switch is enabled, which it 7985 * always is for case where virtual functions are running 7986 */ 7987 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 7988 IXGBE_TX_FLAGS_CC, 7989 IXGBE_ADVTXD_CC); 7990 7991 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); 7992 } 7993 7994 static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) 7995 { 7996 netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index); 7997 7998 /* Herbert's original patch had: 7999 * smp_mb__after_netif_stop_queue(); 8000 * but since that doesn't exist yet, just open code it. 8001 */ 8002 smp_mb(); 8003 8004 /* We need to check again in a case another CPU has just 8005 * made room available. 8006 */ 8007 if (likely(ixgbe_desc_unused(tx_ring) < size)) 8008 return -EBUSY; 8009 8010 /* A reprieve! - use start_queue because it doesn't call schedule */ 8011 netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index); 8012 ++tx_ring->tx_stats.restart_queue; 8013 return 0; 8014 } 8015 8016 static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) 8017 { 8018 if (likely(ixgbe_desc_unused(tx_ring) >= size)) 8019 return 0; 8020 8021 return __ixgbe_maybe_stop_tx(tx_ring, size); 8022 } 8023 8024 #define IXGBE_TXD_CMD (IXGBE_TXD_CMD_EOP | \ 8025 IXGBE_TXD_CMD_RS) 8026 8027 static int ixgbe_tx_map(struct ixgbe_ring *tx_ring, 8028 struct ixgbe_tx_buffer *first, 8029 const u8 hdr_len) 8030 { 8031 struct sk_buff *skb = first->skb; 8032 struct ixgbe_tx_buffer *tx_buffer; 8033 union ixgbe_adv_tx_desc *tx_desc; 8034 struct skb_frag_struct *frag; 8035 dma_addr_t dma; 8036 unsigned int data_len, size; 8037 u32 tx_flags = first->tx_flags; 8038 u32 cmd_type = ixgbe_tx_cmd_type(skb, tx_flags); 8039 u16 i = tx_ring->next_to_use; 8040 8041 tx_desc = IXGBE_TX_DESC(tx_ring, i); 8042 8043 ixgbe_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len); 8044 8045 size = skb_headlen(skb); 8046 data_len = skb->data_len; 8047 8048 #ifdef IXGBE_FCOE 8049 if (tx_flags & IXGBE_TX_FLAGS_FCOE) { 8050 if (data_len < sizeof(struct fcoe_crc_eof)) { 8051 size -= sizeof(struct fcoe_crc_eof) - data_len; 8052 data_len = 0; 8053 } else { 8054 data_len -= sizeof(struct fcoe_crc_eof); 8055 } 8056 } 8057 8058 #endif 8059 dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); 8060 8061 tx_buffer = first; 8062 8063 for (frag = &skb_shinfo(skb)->frags[0];; frag++) { 8064 if (dma_mapping_error(tx_ring->dev, dma)) 8065 goto dma_error; 8066 8067 /* record length, and DMA address */ 8068 dma_unmap_len_set(tx_buffer, len, size); 8069 dma_unmap_addr_set(tx_buffer, dma, dma); 8070 8071 tx_desc->read.buffer_addr = cpu_to_le64(dma); 8072 8073 while (unlikely(size > IXGBE_MAX_DATA_PER_TXD)) { 8074 tx_desc->read.cmd_type_len = 8075 cpu_to_le32(cmd_type ^ IXGBE_MAX_DATA_PER_TXD); 8076 8077 i++; 8078 tx_desc++; 8079 if (i == tx_ring->count) { 8080 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 8081 i = 0; 8082 } 8083 tx_desc->read.olinfo_status = 0; 8084 8085 dma += IXGBE_MAX_DATA_PER_TXD; 8086 size -= IXGBE_MAX_DATA_PER_TXD; 8087 8088 tx_desc->read.buffer_addr = cpu_to_le64(dma); 8089 } 8090 8091 if (likely(!data_len)) 8092 break; 8093 8094 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size); 8095 8096 i++; 8097 tx_desc++; 8098 if (i == tx_ring->count) { 8099 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 8100 i = 0; 8101 } 8102 tx_desc->read.olinfo_status = 0; 8103 8104 #ifdef IXGBE_FCOE 8105 size = min_t(unsigned int, data_len, skb_frag_size(frag)); 8106 #else 8107 size = skb_frag_size(frag); 8108 #endif 8109 data_len -= size; 8110 8111 dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size, 8112 DMA_TO_DEVICE); 8113 8114 tx_buffer = &tx_ring->tx_buffer_info[i]; 8115 } 8116 8117 /* write last descriptor with RS and EOP bits */ 8118 cmd_type |= size | IXGBE_TXD_CMD; 8119 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 8120 8121 netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); 8122 8123 /* set the timestamp */ 8124 first->time_stamp = jiffies; 8125 8126 /* 8127 * Force memory writes to complete before letting h/w know there 8128 * are new descriptors to fetch. (Only applicable for weak-ordered 8129 * memory model archs, such as IA-64). 8130 * 8131 * We also need this memory barrier to make certain all of the 8132 * status bits have been updated before next_to_watch is written. 8133 */ 8134 wmb(); 8135 8136 /* set next_to_watch value indicating a packet is present */ 8137 first->next_to_watch = tx_desc; 8138 8139 i++; 8140 if (i == tx_ring->count) 8141 i = 0; 8142 8143 tx_ring->next_to_use = i; 8144 8145 ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED); 8146 8147 if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) { 8148 writel(i, tx_ring->tail); 8149 8150 /* we need this if more than one processor can write to our tail 8151 * at a time, it synchronizes IO on IA64/Altix systems 8152 */ 8153 mmiowb(); 8154 } 8155 8156 return 0; 8157 dma_error: 8158 dev_err(tx_ring->dev, "TX DMA map failed\n"); 8159 8160 /* clear dma mappings for failed tx_buffer_info map */ 8161 for (;;) { 8162 tx_buffer = &tx_ring->tx_buffer_info[i]; 8163 if (dma_unmap_len(tx_buffer, len)) 8164 dma_unmap_page(tx_ring->dev, 8165 dma_unmap_addr(tx_buffer, dma), 8166 dma_unmap_len(tx_buffer, len), 8167 DMA_TO_DEVICE); 8168 dma_unmap_len_set(tx_buffer, len, 0); 8169 if (tx_buffer == first) 8170 break; 8171 if (i == 0) 8172 i += tx_ring->count; 8173 i--; 8174 } 8175 8176 dev_kfree_skb_any(first->skb); 8177 first->skb = NULL; 8178 8179 tx_ring->next_to_use = i; 8180 8181 return -1; 8182 } 8183 8184 static void ixgbe_atr(struct ixgbe_ring *ring, 8185 struct ixgbe_tx_buffer *first) 8186 { 8187 struct ixgbe_q_vector *q_vector = ring->q_vector; 8188 union ixgbe_atr_hash_dword input = { .dword = 0 }; 8189 union ixgbe_atr_hash_dword common = { .dword = 0 }; 8190 union { 8191 unsigned char *network; 8192 struct iphdr *ipv4; 8193 struct ipv6hdr *ipv6; 8194 } hdr; 8195 struct tcphdr *th; 8196 unsigned int hlen; 8197 struct sk_buff *skb; 8198 __be16 vlan_id; 8199 int l4_proto; 8200 8201 /* if ring doesn't have a interrupt vector, cannot perform ATR */ 8202 if (!q_vector) 8203 return; 8204 8205 /* do nothing if sampling is disabled */ 8206 if (!ring->atr_sample_rate) 8207 return; 8208 8209 ring->atr_count++; 8210 8211 /* currently only IPv4/IPv6 with TCP is supported */ 8212 if ((first->protocol != htons(ETH_P_IP)) && 8213 (first->protocol != htons(ETH_P_IPV6))) 8214 return; 8215 8216 /* snag network header to get L4 type and address */ 8217 skb = first->skb; 8218 hdr.network = skb_network_header(skb); 8219 if (unlikely(hdr.network <= skb->data)) 8220 return; 8221 if (skb->encapsulation && 8222 first->protocol == htons(ETH_P_IP) && 8223 hdr.ipv4->protocol == IPPROTO_UDP) { 8224 struct ixgbe_adapter *adapter = q_vector->adapter; 8225 8226 if (unlikely(skb_tail_pointer(skb) < hdr.network + 8227 VXLAN_HEADROOM)) 8228 return; 8229 8230 /* verify the port is recognized as VXLAN */ 8231 if (adapter->vxlan_port && 8232 udp_hdr(skb)->dest == adapter->vxlan_port) 8233 hdr.network = skb_inner_network_header(skb); 8234 8235 if (adapter->geneve_port && 8236 udp_hdr(skb)->dest == adapter->geneve_port) 8237 hdr.network = skb_inner_network_header(skb); 8238 } 8239 8240 /* Make sure we have at least [minimum IPv4 header + TCP] 8241 * or [IPv6 header] bytes 8242 */ 8243 if (unlikely(skb_tail_pointer(skb) < hdr.network + 40)) 8244 return; 8245 8246 /* Currently only IPv4/IPv6 with TCP is supported */ 8247 switch (hdr.ipv4->version) { 8248 case IPVERSION: 8249 /* access ihl as u8 to avoid unaligned access on ia64 */ 8250 hlen = (hdr.network[0] & 0x0F) << 2; 8251 l4_proto = hdr.ipv4->protocol; 8252 break; 8253 case 6: 8254 hlen = hdr.network - skb->data; 8255 l4_proto = ipv6_find_hdr(skb, &hlen, IPPROTO_TCP, NULL, NULL); 8256 hlen -= hdr.network - skb->data; 8257 break; 8258 default: 8259 return; 8260 } 8261 8262 if (l4_proto != IPPROTO_TCP) 8263 return; 8264 8265 if (unlikely(skb_tail_pointer(skb) < hdr.network + 8266 hlen + sizeof(struct tcphdr))) 8267 return; 8268 8269 th = (struct tcphdr *)(hdr.network + hlen); 8270 8271 /* skip this packet since the socket is closing */ 8272 if (th->fin) 8273 return; 8274 8275 /* sample on all syn packets or once every atr sample count */ 8276 if (!th->syn && (ring->atr_count < ring->atr_sample_rate)) 8277 return; 8278 8279 /* reset sample count */ 8280 ring->atr_count = 0; 8281 8282 vlan_id = htons(first->tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT); 8283 8284 /* 8285 * src and dst are inverted, think how the receiver sees them 8286 * 8287 * The input is broken into two sections, a non-compressed section 8288 * containing vm_pool, vlan_id, and flow_type. The rest of the data 8289 * is XORed together and stored in the compressed dword. 8290 */ 8291 input.formatted.vlan_id = vlan_id; 8292 8293 /* 8294 * since src port and flex bytes occupy the same word XOR them together 8295 * and write the value to source port portion of compressed dword 8296 */ 8297 if (first->tx_flags & (IXGBE_TX_FLAGS_SW_VLAN | IXGBE_TX_FLAGS_HW_VLAN)) 8298 common.port.src ^= th->dest ^ htons(ETH_P_8021Q); 8299 else 8300 common.port.src ^= th->dest ^ first->protocol; 8301 common.port.dst ^= th->source; 8302 8303 switch (hdr.ipv4->version) { 8304 case IPVERSION: 8305 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4; 8306 common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr; 8307 break; 8308 case 6: 8309 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6; 8310 common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^ 8311 hdr.ipv6->saddr.s6_addr32[1] ^ 8312 hdr.ipv6->saddr.s6_addr32[2] ^ 8313 hdr.ipv6->saddr.s6_addr32[3] ^ 8314 hdr.ipv6->daddr.s6_addr32[0] ^ 8315 hdr.ipv6->daddr.s6_addr32[1] ^ 8316 hdr.ipv6->daddr.s6_addr32[2] ^ 8317 hdr.ipv6->daddr.s6_addr32[3]; 8318 break; 8319 default: 8320 break; 8321 } 8322 8323 if (hdr.network != skb_network_header(skb)) 8324 input.formatted.flow_type |= IXGBE_ATR_L4TYPE_TUNNEL_MASK; 8325 8326 /* This assumes the Rx queue and Tx queue are bound to the same CPU */ 8327 ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw, 8328 input, common, ring->queue_index); 8329 } 8330 8331 static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb, 8332 void *accel_priv, select_queue_fallback_t fallback) 8333 { 8334 struct ixgbe_fwd_adapter *fwd_adapter = accel_priv; 8335 #ifdef IXGBE_FCOE 8336 struct ixgbe_adapter *adapter; 8337 struct ixgbe_ring_feature *f; 8338 int txq; 8339 #endif 8340 8341 if (fwd_adapter) 8342 return skb->queue_mapping + fwd_adapter->tx_base_queue; 8343 8344 #ifdef IXGBE_FCOE 8345 8346 /* 8347 * only execute the code below if protocol is FCoE 8348 * or FIP and we have FCoE enabled on the adapter 8349 */ 8350 switch (vlan_get_protocol(skb)) { 8351 case htons(ETH_P_FCOE): 8352 case htons(ETH_P_FIP): 8353 adapter = netdev_priv(dev); 8354 8355 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) 8356 break; 8357 /* fall through */ 8358 default: 8359 return fallback(dev, skb); 8360 } 8361 8362 f = &adapter->ring_feature[RING_F_FCOE]; 8363 8364 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 8365 smp_processor_id(); 8366 8367 while (txq >= f->indices) 8368 txq -= f->indices; 8369 8370 return txq + f->offset; 8371 #else 8372 return fallback(dev, skb); 8373 #endif 8374 } 8375 8376 static int ixgbe_xmit_xdp_ring(struct ixgbe_adapter *adapter, 8377 struct xdp_buff *xdp) 8378 { 8379 struct ixgbe_ring *ring = adapter->xdp_ring[smp_processor_id()]; 8380 struct ixgbe_tx_buffer *tx_buffer; 8381 union ixgbe_adv_tx_desc *tx_desc; 8382 u32 len, cmd_type; 8383 dma_addr_t dma; 8384 u16 i; 8385 8386 len = xdp->data_end - xdp->data; 8387 8388 if (unlikely(!ixgbe_desc_unused(ring))) 8389 return IXGBE_XDP_CONSUMED; 8390 8391 dma = dma_map_single(ring->dev, xdp->data, len, DMA_TO_DEVICE); 8392 if (dma_mapping_error(ring->dev, dma)) 8393 return IXGBE_XDP_CONSUMED; 8394 8395 /* record the location of the first descriptor for this packet */ 8396 tx_buffer = &ring->tx_buffer_info[ring->next_to_use]; 8397 tx_buffer->bytecount = len; 8398 tx_buffer->gso_segs = 1; 8399 tx_buffer->protocol = 0; 8400 8401 i = ring->next_to_use; 8402 tx_desc = IXGBE_TX_DESC(ring, i); 8403 8404 dma_unmap_len_set(tx_buffer, len, len); 8405 dma_unmap_addr_set(tx_buffer, dma, dma); 8406 tx_buffer->data = xdp->data; 8407 tx_desc->read.buffer_addr = cpu_to_le64(dma); 8408 8409 /* put descriptor type bits */ 8410 cmd_type = IXGBE_ADVTXD_DTYP_DATA | 8411 IXGBE_ADVTXD_DCMD_DEXT | 8412 IXGBE_ADVTXD_DCMD_IFCS; 8413 cmd_type |= len | IXGBE_TXD_CMD; 8414 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 8415 tx_desc->read.olinfo_status = 8416 cpu_to_le32(len << IXGBE_ADVTXD_PAYLEN_SHIFT); 8417 8418 /* Avoid any potential race with xdp_xmit and cleanup */ 8419 smp_wmb(); 8420 8421 /* set next_to_watch value indicating a packet is present */ 8422 i++; 8423 if (i == ring->count) 8424 i = 0; 8425 8426 tx_buffer->next_to_watch = tx_desc; 8427 ring->next_to_use = i; 8428 8429 return IXGBE_XDP_TX; 8430 } 8431 8432 netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, 8433 struct ixgbe_adapter *adapter, 8434 struct ixgbe_ring *tx_ring) 8435 { 8436 struct ixgbe_tx_buffer *first; 8437 int tso; 8438 u32 tx_flags = 0; 8439 unsigned short f; 8440 u16 count = TXD_USE_COUNT(skb_headlen(skb)); 8441 __be16 protocol = skb->protocol; 8442 u8 hdr_len = 0; 8443 8444 /* 8445 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD, 8446 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD, 8447 * + 2 desc gap to keep tail from touching head, 8448 * + 1 desc for context descriptor, 8449 * otherwise try next time 8450 */ 8451 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) 8452 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); 8453 8454 if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) { 8455 tx_ring->tx_stats.tx_busy++; 8456 return NETDEV_TX_BUSY; 8457 } 8458 8459 /* record the location of the first descriptor for this packet */ 8460 first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; 8461 first->skb = skb; 8462 first->bytecount = skb->len; 8463 first->gso_segs = 1; 8464 8465 /* if we have a HW VLAN tag being added default to the HW one */ 8466 if (skb_vlan_tag_present(skb)) { 8467 tx_flags |= skb_vlan_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT; 8468 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; 8469 /* else if it is a SW VLAN check the next protocol and store the tag */ 8470 } else if (protocol == htons(ETH_P_8021Q)) { 8471 struct vlan_hdr *vhdr, _vhdr; 8472 vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr), &_vhdr); 8473 if (!vhdr) 8474 goto out_drop; 8475 8476 tx_flags |= ntohs(vhdr->h_vlan_TCI) << 8477 IXGBE_TX_FLAGS_VLAN_SHIFT; 8478 tx_flags |= IXGBE_TX_FLAGS_SW_VLAN; 8479 } 8480 protocol = vlan_get_protocol(skb); 8481 8482 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 8483 adapter->ptp_clock) { 8484 if (!test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS, 8485 &adapter->state)) { 8486 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 8487 tx_flags |= IXGBE_TX_FLAGS_TSTAMP; 8488 8489 /* schedule check for Tx timestamp */ 8490 adapter->ptp_tx_skb = skb_get(skb); 8491 adapter->ptp_tx_start = jiffies; 8492 schedule_work(&adapter->ptp_tx_work); 8493 } else { 8494 adapter->tx_hwtstamp_skipped++; 8495 } 8496 } 8497 8498 skb_tx_timestamp(skb); 8499 8500 #ifdef CONFIG_PCI_IOV 8501 /* 8502 * Use the l2switch_enable flag - would be false if the DMA 8503 * Tx switch had been disabled. 8504 */ 8505 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 8506 tx_flags |= IXGBE_TX_FLAGS_CC; 8507 8508 #endif 8509 /* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */ 8510 if ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && 8511 ((tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | IXGBE_TX_FLAGS_SW_VLAN)) || 8512 (skb->priority != TC_PRIO_CONTROL))) { 8513 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK; 8514 tx_flags |= (skb->priority & 0x7) << 8515 IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT; 8516 if (tx_flags & IXGBE_TX_FLAGS_SW_VLAN) { 8517 struct vlan_ethhdr *vhdr; 8518 8519 if (skb_cow_head(skb, 0)) 8520 goto out_drop; 8521 vhdr = (struct vlan_ethhdr *)skb->data; 8522 vhdr->h_vlan_TCI = htons(tx_flags >> 8523 IXGBE_TX_FLAGS_VLAN_SHIFT); 8524 } else { 8525 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; 8526 } 8527 } 8528 8529 /* record initial flags and protocol */ 8530 first->tx_flags = tx_flags; 8531 first->protocol = protocol; 8532 8533 #ifdef IXGBE_FCOE 8534 /* setup tx offload for FCoE */ 8535 if ((protocol == htons(ETH_P_FCOE)) && 8536 (tx_ring->netdev->features & (NETIF_F_FSO | NETIF_F_FCOE_CRC))) { 8537 tso = ixgbe_fso(tx_ring, first, &hdr_len); 8538 if (tso < 0) 8539 goto out_drop; 8540 8541 goto xmit_fcoe; 8542 } 8543 8544 #endif /* IXGBE_FCOE */ 8545 tso = ixgbe_tso(tx_ring, first, &hdr_len); 8546 if (tso < 0) 8547 goto out_drop; 8548 else if (!tso) 8549 ixgbe_tx_csum(tx_ring, first); 8550 8551 /* add the ATR filter if ATR is on */ 8552 if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state)) 8553 ixgbe_atr(tx_ring, first); 8554 8555 #ifdef IXGBE_FCOE 8556 xmit_fcoe: 8557 #endif /* IXGBE_FCOE */ 8558 if (ixgbe_tx_map(tx_ring, first, hdr_len)) 8559 goto cleanup_tx_timestamp; 8560 8561 return NETDEV_TX_OK; 8562 8563 out_drop: 8564 dev_kfree_skb_any(first->skb); 8565 first->skb = NULL; 8566 cleanup_tx_timestamp: 8567 if (unlikely(tx_flags & IXGBE_TX_FLAGS_TSTAMP)) { 8568 dev_kfree_skb_any(adapter->ptp_tx_skb); 8569 adapter->ptp_tx_skb = NULL; 8570 cancel_work_sync(&adapter->ptp_tx_work); 8571 clear_bit_unlock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state); 8572 } 8573 8574 return NETDEV_TX_OK; 8575 } 8576 8577 static netdev_tx_t __ixgbe_xmit_frame(struct sk_buff *skb, 8578 struct net_device *netdev, 8579 struct ixgbe_ring *ring) 8580 { 8581 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8582 struct ixgbe_ring *tx_ring; 8583 8584 /* 8585 * The minimum packet size for olinfo paylen is 17 so pad the skb 8586 * in order to meet this minimum size requirement. 8587 */ 8588 if (skb_put_padto(skb, 17)) 8589 return NETDEV_TX_OK; 8590 8591 tx_ring = ring ? ring : adapter->tx_ring[skb->queue_mapping]; 8592 8593 return ixgbe_xmit_frame_ring(skb, adapter, tx_ring); 8594 } 8595 8596 static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, 8597 struct net_device *netdev) 8598 { 8599 return __ixgbe_xmit_frame(skb, netdev, NULL); 8600 } 8601 8602 /** 8603 * ixgbe_set_mac - Change the Ethernet Address of the NIC 8604 * @netdev: network interface device structure 8605 * @p: pointer to an address structure 8606 * 8607 * Returns 0 on success, negative on failure 8608 **/ 8609 static int ixgbe_set_mac(struct net_device *netdev, void *p) 8610 { 8611 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8612 struct ixgbe_hw *hw = &adapter->hw; 8613 struct sockaddr *addr = p; 8614 8615 if (!is_valid_ether_addr(addr->sa_data)) 8616 return -EADDRNOTAVAIL; 8617 8618 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 8619 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); 8620 8621 ixgbe_mac_set_default_filter(adapter); 8622 8623 return 0; 8624 } 8625 8626 static int 8627 ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr) 8628 { 8629 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8630 struct ixgbe_hw *hw = &adapter->hw; 8631 u16 value; 8632 int rc; 8633 8634 if (prtad != hw->phy.mdio.prtad) 8635 return -EINVAL; 8636 rc = hw->phy.ops.read_reg(hw, addr, devad, &value); 8637 if (!rc) 8638 rc = value; 8639 return rc; 8640 } 8641 8642 static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad, 8643 u16 addr, u16 value) 8644 { 8645 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8646 struct ixgbe_hw *hw = &adapter->hw; 8647 8648 if (prtad != hw->phy.mdio.prtad) 8649 return -EINVAL; 8650 return hw->phy.ops.write_reg(hw, addr, devad, value); 8651 } 8652 8653 static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd) 8654 { 8655 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8656 8657 switch (cmd) { 8658 case SIOCSHWTSTAMP: 8659 return ixgbe_ptp_set_ts_config(adapter, req); 8660 case SIOCGHWTSTAMP: 8661 return ixgbe_ptp_get_ts_config(adapter, req); 8662 case SIOCGMIIPHY: 8663 if (!adapter->hw.phy.ops.read_reg) 8664 return -EOPNOTSUPP; 8665 /* fall through */ 8666 default: 8667 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd); 8668 } 8669 } 8670 8671 /** 8672 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding 8673 * netdev->dev_addrs 8674 * @netdev: network interface device structure 8675 * 8676 * Returns non-zero on failure 8677 **/ 8678 static int ixgbe_add_sanmac_netdev(struct net_device *dev) 8679 { 8680 int err = 0; 8681 struct ixgbe_adapter *adapter = netdev_priv(dev); 8682 struct ixgbe_hw *hw = &adapter->hw; 8683 8684 if (is_valid_ether_addr(hw->mac.san_addr)) { 8685 rtnl_lock(); 8686 err = dev_addr_add(dev, hw->mac.san_addr, NETDEV_HW_ADDR_T_SAN); 8687 rtnl_unlock(); 8688 8689 /* update SAN MAC vmdq pool selection */ 8690 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0)); 8691 } 8692 return err; 8693 } 8694 8695 /** 8696 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding 8697 * netdev->dev_addrs 8698 * @netdev: network interface device structure 8699 * 8700 * Returns non-zero on failure 8701 **/ 8702 static int ixgbe_del_sanmac_netdev(struct net_device *dev) 8703 { 8704 int err = 0; 8705 struct ixgbe_adapter *adapter = netdev_priv(dev); 8706 struct ixgbe_mac_info *mac = &adapter->hw.mac; 8707 8708 if (is_valid_ether_addr(mac->san_addr)) { 8709 rtnl_lock(); 8710 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN); 8711 rtnl_unlock(); 8712 } 8713 return err; 8714 } 8715 8716 #ifdef CONFIG_NET_POLL_CONTROLLER 8717 /* 8718 * Polling 'interrupt' - used by things like netconsole to send skbs 8719 * without having to re-enable interrupts. It's not called while 8720 * the interrupt routine is executing. 8721 */ 8722 static void ixgbe_netpoll(struct net_device *netdev) 8723 { 8724 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8725 int i; 8726 8727 /* if interface is down do nothing */ 8728 if (test_bit(__IXGBE_DOWN, &adapter->state)) 8729 return; 8730 8731 /* loop through and schedule all active queues */ 8732 for (i = 0; i < adapter->num_q_vectors; i++) 8733 ixgbe_msix_clean_rings(0, adapter->q_vector[i]); 8734 } 8735 8736 #endif 8737 8738 static void ixgbe_get_ring_stats64(struct rtnl_link_stats64 *stats, 8739 struct ixgbe_ring *ring) 8740 { 8741 u64 bytes, packets; 8742 unsigned int start; 8743 8744 if (ring) { 8745 do { 8746 start = u64_stats_fetch_begin_irq(&ring->syncp); 8747 packets = ring->stats.packets; 8748 bytes = ring->stats.bytes; 8749 } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); 8750 stats->tx_packets += packets; 8751 stats->tx_bytes += bytes; 8752 } 8753 } 8754 8755 static void ixgbe_get_stats64(struct net_device *netdev, 8756 struct rtnl_link_stats64 *stats) 8757 { 8758 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8759 int i; 8760 8761 rcu_read_lock(); 8762 for (i = 0; i < adapter->num_rx_queues; i++) { 8763 struct ixgbe_ring *ring = READ_ONCE(adapter->rx_ring[i]); 8764 u64 bytes, packets; 8765 unsigned int start; 8766 8767 if (ring) { 8768 do { 8769 start = u64_stats_fetch_begin_irq(&ring->syncp); 8770 packets = ring->stats.packets; 8771 bytes = ring->stats.bytes; 8772 } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); 8773 stats->rx_packets += packets; 8774 stats->rx_bytes += bytes; 8775 } 8776 } 8777 8778 for (i = 0; i < adapter->num_tx_queues; i++) { 8779 struct ixgbe_ring *ring = READ_ONCE(adapter->tx_ring[i]); 8780 8781 ixgbe_get_ring_stats64(stats, ring); 8782 } 8783 for (i = 0; i < adapter->num_xdp_queues; i++) { 8784 struct ixgbe_ring *ring = READ_ONCE(adapter->xdp_ring[i]); 8785 8786 ixgbe_get_ring_stats64(stats, ring); 8787 } 8788 rcu_read_unlock(); 8789 8790 /* following stats updated by ixgbe_watchdog_task() */ 8791 stats->multicast = netdev->stats.multicast; 8792 stats->rx_errors = netdev->stats.rx_errors; 8793 stats->rx_length_errors = netdev->stats.rx_length_errors; 8794 stats->rx_crc_errors = netdev->stats.rx_crc_errors; 8795 stats->rx_missed_errors = netdev->stats.rx_missed_errors; 8796 } 8797 8798 #ifdef CONFIG_IXGBE_DCB 8799 /** 8800 * ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid. 8801 * @adapter: pointer to ixgbe_adapter 8802 * @tc: number of traffic classes currently enabled 8803 * 8804 * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm 8805 * 802.1Q priority maps to a packet buffer that exists. 8806 */ 8807 static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc) 8808 { 8809 struct ixgbe_hw *hw = &adapter->hw; 8810 u32 reg, rsave; 8811 int i; 8812 8813 /* 82598 have a static priority to TC mapping that can not 8814 * be changed so no validation is needed. 8815 */ 8816 if (hw->mac.type == ixgbe_mac_82598EB) 8817 return; 8818 8819 reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC); 8820 rsave = reg; 8821 8822 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { 8823 u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT); 8824 8825 /* If up2tc is out of bounds default to zero */ 8826 if (up2tc > tc) 8827 reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT); 8828 } 8829 8830 if (reg != rsave) 8831 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg); 8832 8833 return; 8834 } 8835 8836 /** 8837 * ixgbe_set_prio_tc_map - Configure netdev prio tc map 8838 * @adapter: Pointer to adapter struct 8839 * 8840 * Populate the netdev user priority to tc map 8841 */ 8842 static void ixgbe_set_prio_tc_map(struct ixgbe_adapter *adapter) 8843 { 8844 struct net_device *dev = adapter->netdev; 8845 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg; 8846 struct ieee_ets *ets = adapter->ixgbe_ieee_ets; 8847 u8 prio; 8848 8849 for (prio = 0; prio < MAX_USER_PRIORITY; prio++) { 8850 u8 tc = 0; 8851 8852 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) 8853 tc = ixgbe_dcb_get_tc_from_up(dcb_cfg, 0, prio); 8854 else if (ets) 8855 tc = ets->prio_tc[prio]; 8856 8857 netdev_set_prio_tc_map(dev, prio, tc); 8858 } 8859 } 8860 8861 #endif /* CONFIG_IXGBE_DCB */ 8862 /** 8863 * ixgbe_setup_tc - configure net_device for multiple traffic classes 8864 * 8865 * @netdev: net device to configure 8866 * @tc: number of traffic classes to enable 8867 */ 8868 int ixgbe_setup_tc(struct net_device *dev, u8 tc) 8869 { 8870 struct ixgbe_adapter *adapter = netdev_priv(dev); 8871 struct ixgbe_hw *hw = &adapter->hw; 8872 bool pools; 8873 8874 /* Hardware supports up to 8 traffic classes */ 8875 if (tc > adapter->dcb_cfg.num_tcs.pg_tcs) 8876 return -EINVAL; 8877 8878 if (hw->mac.type == ixgbe_mac_82598EB && tc && tc < MAX_TRAFFIC_CLASS) 8879 return -EINVAL; 8880 8881 pools = (find_first_zero_bit(&adapter->fwd_bitmask, 32) > 1); 8882 if (tc && pools && adapter->num_rx_pools > IXGBE_MAX_DCBMACVLANS) 8883 return -EBUSY; 8884 8885 /* Hardware has to reinitialize queues and interrupts to 8886 * match packet buffer alignment. Unfortunately, the 8887 * hardware is not flexible enough to do this dynamically. 8888 */ 8889 if (netif_running(dev)) 8890 ixgbe_close(dev); 8891 else 8892 ixgbe_reset(adapter); 8893 8894 ixgbe_clear_interrupt_scheme(adapter); 8895 8896 #ifdef CONFIG_IXGBE_DCB 8897 if (tc) { 8898 netdev_set_num_tc(dev, tc); 8899 ixgbe_set_prio_tc_map(adapter); 8900 8901 adapter->flags |= IXGBE_FLAG_DCB_ENABLED; 8902 8903 if (adapter->hw.mac.type == ixgbe_mac_82598EB) { 8904 adapter->last_lfc_mode = adapter->hw.fc.requested_mode; 8905 adapter->hw.fc.requested_mode = ixgbe_fc_none; 8906 } 8907 } else { 8908 netdev_reset_tc(dev); 8909 8910 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 8911 adapter->hw.fc.requested_mode = adapter->last_lfc_mode; 8912 8913 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; 8914 8915 adapter->temp_dcb_cfg.pfc_mode_enable = false; 8916 adapter->dcb_cfg.pfc_mode_enable = false; 8917 } 8918 8919 ixgbe_validate_rtr(adapter, tc); 8920 8921 #endif /* CONFIG_IXGBE_DCB */ 8922 ixgbe_init_interrupt_scheme(adapter); 8923 8924 if (netif_running(dev)) 8925 return ixgbe_open(dev); 8926 8927 return 0; 8928 } 8929 8930 static int ixgbe_delete_clsu32(struct ixgbe_adapter *adapter, 8931 struct tc_cls_u32_offload *cls) 8932 { 8933 u32 hdl = cls->knode.handle; 8934 u32 uhtid = TC_U32_USERHTID(cls->knode.handle); 8935 u32 loc = cls->knode.handle & 0xfffff; 8936 int err = 0, i, j; 8937 struct ixgbe_jump_table *jump = NULL; 8938 8939 if (loc > IXGBE_MAX_HW_ENTRIES) 8940 return -EINVAL; 8941 8942 if ((uhtid != 0x800) && (uhtid >= IXGBE_MAX_LINK_HANDLE)) 8943 return -EINVAL; 8944 8945 /* Clear this filter in the link data it is associated with */ 8946 if (uhtid != 0x800) { 8947 jump = adapter->jump_tables[uhtid]; 8948 if (!jump) 8949 return -EINVAL; 8950 if (!test_bit(loc - 1, jump->child_loc_map)) 8951 return -EINVAL; 8952 clear_bit(loc - 1, jump->child_loc_map); 8953 } 8954 8955 /* Check if the filter being deleted is a link */ 8956 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { 8957 jump = adapter->jump_tables[i]; 8958 if (jump && jump->link_hdl == hdl) { 8959 /* Delete filters in the hardware in the child hash 8960 * table associated with this link 8961 */ 8962 for (j = 0; j < IXGBE_MAX_HW_ENTRIES; j++) { 8963 if (!test_bit(j, jump->child_loc_map)) 8964 continue; 8965 spin_lock(&adapter->fdir_perfect_lock); 8966 err = ixgbe_update_ethtool_fdir_entry(adapter, 8967 NULL, 8968 j + 1); 8969 spin_unlock(&adapter->fdir_perfect_lock); 8970 clear_bit(j, jump->child_loc_map); 8971 } 8972 /* Remove resources for this link */ 8973 kfree(jump->input); 8974 kfree(jump->mask); 8975 kfree(jump); 8976 adapter->jump_tables[i] = NULL; 8977 return err; 8978 } 8979 } 8980 8981 spin_lock(&adapter->fdir_perfect_lock); 8982 err = ixgbe_update_ethtool_fdir_entry(adapter, NULL, loc); 8983 spin_unlock(&adapter->fdir_perfect_lock); 8984 return err; 8985 } 8986 8987 static int ixgbe_configure_clsu32_add_hnode(struct ixgbe_adapter *adapter, 8988 struct tc_cls_u32_offload *cls) 8989 { 8990 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); 8991 8992 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 8993 return -EINVAL; 8994 8995 /* This ixgbe devices do not support hash tables at the moment 8996 * so abort when given hash tables. 8997 */ 8998 if (cls->hnode.divisor > 0) 8999 return -EINVAL; 9000 9001 set_bit(uhtid - 1, &adapter->tables); 9002 return 0; 9003 } 9004 9005 static int ixgbe_configure_clsu32_del_hnode(struct ixgbe_adapter *adapter, 9006 struct tc_cls_u32_offload *cls) 9007 { 9008 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); 9009 9010 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 9011 return -EINVAL; 9012 9013 clear_bit(uhtid - 1, &adapter->tables); 9014 return 0; 9015 } 9016 9017 #ifdef CONFIG_NET_CLS_ACT 9018 struct upper_walk_data { 9019 struct ixgbe_adapter *adapter; 9020 u64 action; 9021 int ifindex; 9022 u8 queue; 9023 }; 9024 9025 static int get_macvlan_queue(struct net_device *upper, void *_data) 9026 { 9027 if (netif_is_macvlan(upper)) { 9028 struct macvlan_dev *dfwd = netdev_priv(upper); 9029 struct ixgbe_fwd_adapter *vadapter = dfwd->fwd_priv; 9030 struct upper_walk_data *data = _data; 9031 struct ixgbe_adapter *adapter = data->adapter; 9032 int ifindex = data->ifindex; 9033 9034 if (vadapter && vadapter->netdev->ifindex == ifindex) { 9035 data->queue = adapter->rx_ring[vadapter->rx_base_queue]->reg_idx; 9036 data->action = data->queue; 9037 return 1; 9038 } 9039 } 9040 9041 return 0; 9042 } 9043 9044 static int handle_redirect_action(struct ixgbe_adapter *adapter, int ifindex, 9045 u8 *queue, u64 *action) 9046 { 9047 unsigned int num_vfs = adapter->num_vfs, vf; 9048 struct upper_walk_data data; 9049 struct net_device *upper; 9050 9051 /* redirect to a SRIOV VF */ 9052 for (vf = 0; vf < num_vfs; ++vf) { 9053 upper = pci_get_drvdata(adapter->vfinfo[vf].vfdev); 9054 if (upper->ifindex == ifindex) { 9055 if (adapter->num_rx_pools > 1) 9056 *queue = vf * 2; 9057 else 9058 *queue = vf * adapter->num_rx_queues_per_pool; 9059 9060 *action = vf + 1; 9061 *action <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF; 9062 return 0; 9063 } 9064 } 9065 9066 /* redirect to a offloaded macvlan netdev */ 9067 data.adapter = adapter; 9068 data.ifindex = ifindex; 9069 data.action = 0; 9070 data.queue = 0; 9071 if (netdev_walk_all_upper_dev_rcu(adapter->netdev, 9072 get_macvlan_queue, &data)) { 9073 *action = data.action; 9074 *queue = data.queue; 9075 9076 return 0; 9077 } 9078 9079 return -EINVAL; 9080 } 9081 9082 static int parse_tc_actions(struct ixgbe_adapter *adapter, 9083 struct tcf_exts *exts, u64 *action, u8 *queue) 9084 { 9085 const struct tc_action *a; 9086 LIST_HEAD(actions); 9087 int err; 9088 9089 if (!tcf_exts_has_actions(exts)) 9090 return -EINVAL; 9091 9092 tcf_exts_to_list(exts, &actions); 9093 list_for_each_entry(a, &actions, list) { 9094 9095 /* Drop action */ 9096 if (is_tcf_gact_shot(a)) { 9097 *action = IXGBE_FDIR_DROP_QUEUE; 9098 *queue = IXGBE_FDIR_DROP_QUEUE; 9099 return 0; 9100 } 9101 9102 /* Redirect to a VF or a offloaded macvlan */ 9103 if (is_tcf_mirred_egress_redirect(a)) { 9104 int ifindex = tcf_mirred_ifindex(a); 9105 9106 err = handle_redirect_action(adapter, ifindex, queue, 9107 action); 9108 if (err == 0) 9109 return err; 9110 } 9111 } 9112 9113 return -EINVAL; 9114 } 9115 #else 9116 static int parse_tc_actions(struct ixgbe_adapter *adapter, 9117 struct tcf_exts *exts, u64 *action, u8 *queue) 9118 { 9119 return -EINVAL; 9120 } 9121 #endif /* CONFIG_NET_CLS_ACT */ 9122 9123 static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter *input, 9124 union ixgbe_atr_input *mask, 9125 struct tc_cls_u32_offload *cls, 9126 struct ixgbe_mat_field *field_ptr, 9127 struct ixgbe_nexthdr *nexthdr) 9128 { 9129 int i, j, off; 9130 __be32 val, m; 9131 bool found_entry = false, found_jump_field = false; 9132 9133 for (i = 0; i < cls->knode.sel->nkeys; i++) { 9134 off = cls->knode.sel->keys[i].off; 9135 val = cls->knode.sel->keys[i].val; 9136 m = cls->knode.sel->keys[i].mask; 9137 9138 for (j = 0; field_ptr[j].val; j++) { 9139 if (field_ptr[j].off == off) { 9140 field_ptr[j].val(input, mask, val, m); 9141 input->filter.formatted.flow_type |= 9142 field_ptr[j].type; 9143 found_entry = true; 9144 break; 9145 } 9146 } 9147 if (nexthdr) { 9148 if (nexthdr->off == cls->knode.sel->keys[i].off && 9149 nexthdr->val == cls->knode.sel->keys[i].val && 9150 nexthdr->mask == cls->knode.sel->keys[i].mask) 9151 found_jump_field = true; 9152 else 9153 continue; 9154 } 9155 } 9156 9157 if (nexthdr && !found_jump_field) 9158 return -EINVAL; 9159 9160 if (!found_entry) 9161 return 0; 9162 9163 mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK | 9164 IXGBE_ATR_L4TYPE_MASK; 9165 9166 if (input->filter.formatted.flow_type == IXGBE_ATR_FLOW_TYPE_IPV4) 9167 mask->formatted.flow_type &= IXGBE_ATR_L4TYPE_IPV6_MASK; 9168 9169 return 0; 9170 } 9171 9172 static int ixgbe_configure_clsu32(struct ixgbe_adapter *adapter, 9173 struct tc_cls_u32_offload *cls) 9174 { 9175 __be16 protocol = cls->common.protocol; 9176 u32 loc = cls->knode.handle & 0xfffff; 9177 struct ixgbe_hw *hw = &adapter->hw; 9178 struct ixgbe_mat_field *field_ptr; 9179 struct ixgbe_fdir_filter *input = NULL; 9180 union ixgbe_atr_input *mask = NULL; 9181 struct ixgbe_jump_table *jump = NULL; 9182 int i, err = -EINVAL; 9183 u8 queue; 9184 u32 uhtid, link_uhtid; 9185 9186 uhtid = TC_U32_USERHTID(cls->knode.handle); 9187 link_uhtid = TC_U32_USERHTID(cls->knode.link_handle); 9188 9189 /* At the moment cls_u32 jumps to network layer and skips past 9190 * L2 headers. The canonical method to match L2 frames is to use 9191 * negative values. However this is error prone at best but really 9192 * just broken because there is no way to "know" what sort of hdr 9193 * is in front of the network layer. Fix cls_u32 to support L2 9194 * headers when needed. 9195 */ 9196 if (protocol != htons(ETH_P_IP)) 9197 return err; 9198 9199 if (loc >= ((1024 << adapter->fdir_pballoc) - 2)) { 9200 e_err(drv, "Location out of range\n"); 9201 return err; 9202 } 9203 9204 /* cls u32 is a graph starting at root node 0x800. The driver tracks 9205 * links and also the fields used to advance the parser across each 9206 * link (e.g. nexthdr/eat parameters from 'tc'). This way we can map 9207 * the u32 graph onto the hardware parse graph denoted in ixgbe_model.h 9208 * To add support for new nodes update ixgbe_model.h parse structures 9209 * this function _should_ be generic try not to hardcode values here. 9210 */ 9211 if (uhtid == 0x800) { 9212 field_ptr = (adapter->jump_tables[0])->mat; 9213 } else { 9214 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 9215 return err; 9216 if (!adapter->jump_tables[uhtid]) 9217 return err; 9218 field_ptr = (adapter->jump_tables[uhtid])->mat; 9219 } 9220 9221 if (!field_ptr) 9222 return err; 9223 9224 /* At this point we know the field_ptr is valid and need to either 9225 * build cls_u32 link or attach filter. Because adding a link to 9226 * a handle that does not exist is invalid and the same for adding 9227 * rules to handles that don't exist. 9228 */ 9229 9230 if (link_uhtid) { 9231 struct ixgbe_nexthdr *nexthdr = ixgbe_ipv4_jumps; 9232 9233 if (link_uhtid >= IXGBE_MAX_LINK_HANDLE) 9234 return err; 9235 9236 if (!test_bit(link_uhtid - 1, &adapter->tables)) 9237 return err; 9238 9239 /* Multiple filters as links to the same hash table are not 9240 * supported. To add a new filter with the same next header 9241 * but different match/jump conditions, create a new hash table 9242 * and link to it. 9243 */ 9244 if (adapter->jump_tables[link_uhtid] && 9245 (adapter->jump_tables[link_uhtid])->link_hdl) { 9246 e_err(drv, "Link filter exists for link: %x\n", 9247 link_uhtid); 9248 return err; 9249 } 9250 9251 for (i = 0; nexthdr[i].jump; i++) { 9252 if (nexthdr[i].o != cls->knode.sel->offoff || 9253 nexthdr[i].s != cls->knode.sel->offshift || 9254 nexthdr[i].m != cls->knode.sel->offmask) 9255 return err; 9256 9257 jump = kzalloc(sizeof(*jump), GFP_KERNEL); 9258 if (!jump) 9259 return -ENOMEM; 9260 input = kzalloc(sizeof(*input), GFP_KERNEL); 9261 if (!input) { 9262 err = -ENOMEM; 9263 goto free_jump; 9264 } 9265 mask = kzalloc(sizeof(*mask), GFP_KERNEL); 9266 if (!mask) { 9267 err = -ENOMEM; 9268 goto free_input; 9269 } 9270 jump->input = input; 9271 jump->mask = mask; 9272 jump->link_hdl = cls->knode.handle; 9273 9274 err = ixgbe_clsu32_build_input(input, mask, cls, 9275 field_ptr, &nexthdr[i]); 9276 if (!err) { 9277 jump->mat = nexthdr[i].jump; 9278 adapter->jump_tables[link_uhtid] = jump; 9279 break; 9280 } 9281 } 9282 return 0; 9283 } 9284 9285 input = kzalloc(sizeof(*input), GFP_KERNEL); 9286 if (!input) 9287 return -ENOMEM; 9288 mask = kzalloc(sizeof(*mask), GFP_KERNEL); 9289 if (!mask) { 9290 err = -ENOMEM; 9291 goto free_input; 9292 } 9293 9294 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) { 9295 if ((adapter->jump_tables[uhtid])->input) 9296 memcpy(input, (adapter->jump_tables[uhtid])->input, 9297 sizeof(*input)); 9298 if ((adapter->jump_tables[uhtid])->mask) 9299 memcpy(mask, (adapter->jump_tables[uhtid])->mask, 9300 sizeof(*mask)); 9301 9302 /* Lookup in all child hash tables if this location is already 9303 * filled with a filter 9304 */ 9305 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { 9306 struct ixgbe_jump_table *link = adapter->jump_tables[i]; 9307 9308 if (link && (test_bit(loc - 1, link->child_loc_map))) { 9309 e_err(drv, "Filter exists in location: %x\n", 9310 loc); 9311 err = -EINVAL; 9312 goto err_out; 9313 } 9314 } 9315 } 9316 err = ixgbe_clsu32_build_input(input, mask, cls, field_ptr, NULL); 9317 if (err) 9318 goto err_out; 9319 9320 err = parse_tc_actions(adapter, cls->knode.exts, &input->action, 9321 &queue); 9322 if (err < 0) 9323 goto err_out; 9324 9325 input->sw_idx = loc; 9326 9327 spin_lock(&adapter->fdir_perfect_lock); 9328 9329 if (hlist_empty(&adapter->fdir_filter_list)) { 9330 memcpy(&adapter->fdir_mask, mask, sizeof(*mask)); 9331 err = ixgbe_fdir_set_input_mask_82599(hw, mask); 9332 if (err) 9333 goto err_out_w_lock; 9334 } else if (memcmp(&adapter->fdir_mask, mask, sizeof(*mask))) { 9335 err = -EINVAL; 9336 goto err_out_w_lock; 9337 } 9338 9339 ixgbe_atr_compute_perfect_hash_82599(&input->filter, mask); 9340 err = ixgbe_fdir_write_perfect_filter_82599(hw, &input->filter, 9341 input->sw_idx, queue); 9342 if (!err) 9343 ixgbe_update_ethtool_fdir_entry(adapter, input, input->sw_idx); 9344 spin_unlock(&adapter->fdir_perfect_lock); 9345 9346 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) 9347 set_bit(loc - 1, (adapter->jump_tables[uhtid])->child_loc_map); 9348 9349 kfree(mask); 9350 return err; 9351 err_out_w_lock: 9352 spin_unlock(&adapter->fdir_perfect_lock); 9353 err_out: 9354 kfree(mask); 9355 free_input: 9356 kfree(input); 9357 free_jump: 9358 kfree(jump); 9359 return err; 9360 } 9361 9362 static int ixgbe_setup_tc_cls_u32(struct ixgbe_adapter *adapter, 9363 struct tc_cls_u32_offload *cls_u32) 9364 { 9365 if (cls_u32->common.chain_index) 9366 return -EOPNOTSUPP; 9367 9368 switch (cls_u32->command) { 9369 case TC_CLSU32_NEW_KNODE: 9370 case TC_CLSU32_REPLACE_KNODE: 9371 return ixgbe_configure_clsu32(adapter, cls_u32); 9372 case TC_CLSU32_DELETE_KNODE: 9373 return ixgbe_delete_clsu32(adapter, cls_u32); 9374 case TC_CLSU32_NEW_HNODE: 9375 case TC_CLSU32_REPLACE_HNODE: 9376 return ixgbe_configure_clsu32_add_hnode(adapter, cls_u32); 9377 case TC_CLSU32_DELETE_HNODE: 9378 return ixgbe_configure_clsu32_del_hnode(adapter, cls_u32); 9379 default: 9380 return -EOPNOTSUPP; 9381 } 9382 } 9383 9384 static int ixgbe_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 9385 void *cb_priv) 9386 { 9387 struct ixgbe_adapter *adapter = cb_priv; 9388 9389 if (!tc_can_offload(adapter->netdev)) 9390 return -EOPNOTSUPP; 9391 9392 switch (type) { 9393 case TC_SETUP_CLSU32: 9394 return ixgbe_setup_tc_cls_u32(adapter, type_data); 9395 default: 9396 return -EOPNOTSUPP; 9397 } 9398 } 9399 9400 static int ixgbe_setup_tc_block(struct net_device *dev, 9401 struct tc_block_offload *f) 9402 { 9403 struct ixgbe_adapter *adapter = netdev_priv(dev); 9404 9405 if (f->binder_type != TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS) 9406 return -EOPNOTSUPP; 9407 9408 switch (f->command) { 9409 case TC_BLOCK_BIND: 9410 return tcf_block_cb_register(f->block, ixgbe_setup_tc_block_cb, 9411 adapter, adapter); 9412 case TC_BLOCK_UNBIND: 9413 tcf_block_cb_unregister(f->block, ixgbe_setup_tc_block_cb, 9414 adapter); 9415 return 0; 9416 default: 9417 return -EOPNOTSUPP; 9418 } 9419 } 9420 9421 static int ixgbe_setup_tc_mqprio(struct net_device *dev, 9422 struct tc_mqprio_qopt *mqprio) 9423 { 9424 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; 9425 return ixgbe_setup_tc(dev, mqprio->num_tc); 9426 } 9427 9428 static int __ixgbe_setup_tc(struct net_device *dev, enum tc_setup_type type, 9429 void *type_data) 9430 { 9431 switch (type) { 9432 case TC_SETUP_BLOCK: 9433 return ixgbe_setup_tc_block(dev, type_data); 9434 case TC_SETUP_QDISC_MQPRIO: 9435 return ixgbe_setup_tc_mqprio(dev, type_data); 9436 default: 9437 return -EOPNOTSUPP; 9438 } 9439 } 9440 9441 #ifdef CONFIG_PCI_IOV 9442 void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter) 9443 { 9444 struct net_device *netdev = adapter->netdev; 9445 9446 rtnl_lock(); 9447 ixgbe_setup_tc(netdev, netdev_get_num_tc(netdev)); 9448 rtnl_unlock(); 9449 } 9450 9451 #endif 9452 void ixgbe_do_reset(struct net_device *netdev) 9453 { 9454 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9455 9456 if (netif_running(netdev)) 9457 ixgbe_reinit_locked(adapter); 9458 else 9459 ixgbe_reset(adapter); 9460 } 9461 9462 static netdev_features_t ixgbe_fix_features(struct net_device *netdev, 9463 netdev_features_t features) 9464 { 9465 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9466 9467 /* If Rx checksum is disabled, then RSC/LRO should also be disabled */ 9468 if (!(features & NETIF_F_RXCSUM)) 9469 features &= ~NETIF_F_LRO; 9470 9471 /* Turn off LRO if not RSC capable */ 9472 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)) 9473 features &= ~NETIF_F_LRO; 9474 9475 return features; 9476 } 9477 9478 static int ixgbe_set_features(struct net_device *netdev, 9479 netdev_features_t features) 9480 { 9481 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9482 netdev_features_t changed = netdev->features ^ features; 9483 bool need_reset = false; 9484 9485 /* Make sure RSC matches LRO, reset if change */ 9486 if (!(features & NETIF_F_LRO)) { 9487 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 9488 need_reset = true; 9489 adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED; 9490 } else if ((adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) && 9491 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) { 9492 if (adapter->rx_itr_setting == 1 || 9493 adapter->rx_itr_setting > IXGBE_MIN_RSC_ITR) { 9494 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED; 9495 need_reset = true; 9496 } else if ((changed ^ features) & NETIF_F_LRO) { 9497 e_info(probe, "rx-usecs set too low, " 9498 "disabling RSC\n"); 9499 } 9500 } 9501 9502 /* 9503 * Check if Flow Director n-tuple support or hw_tc support was 9504 * enabled or disabled. If the state changed, we need to reset. 9505 */ 9506 if ((features & NETIF_F_NTUPLE) || (features & NETIF_F_HW_TC)) { 9507 /* turn off ATR, enable perfect filters and reset */ 9508 if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) 9509 need_reset = true; 9510 9511 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; 9512 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE; 9513 } else { 9514 /* turn off perfect filters, enable ATR and reset */ 9515 if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) 9516 need_reset = true; 9517 9518 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE; 9519 9520 /* We cannot enable ATR if SR-IOV is enabled */ 9521 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED || 9522 /* We cannot enable ATR if we have 2 or more tcs */ 9523 (netdev_get_num_tc(netdev) > 1) || 9524 /* We cannot enable ATR if RSS is disabled */ 9525 (adapter->ring_feature[RING_F_RSS].limit <= 1) || 9526 /* A sample rate of 0 indicates ATR disabled */ 9527 (!adapter->atr_sample_rate)) 9528 ; /* do nothing not supported */ 9529 else /* otherwise supported and set the flag */ 9530 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE; 9531 } 9532 9533 if (changed & NETIF_F_RXALL) 9534 need_reset = true; 9535 9536 netdev->features = features; 9537 9538 if ((adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE)) { 9539 if (features & NETIF_F_RXCSUM) { 9540 adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED; 9541 } else { 9542 u32 port_mask = IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK; 9543 9544 ixgbe_clear_udp_tunnel_port(adapter, port_mask); 9545 } 9546 } 9547 9548 if ((adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE)) { 9549 if (features & NETIF_F_RXCSUM) { 9550 adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED; 9551 } else { 9552 u32 port_mask = IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK; 9553 9554 ixgbe_clear_udp_tunnel_port(adapter, port_mask); 9555 } 9556 } 9557 9558 if (need_reset) 9559 ixgbe_do_reset(netdev); 9560 else if (changed & (NETIF_F_HW_VLAN_CTAG_RX | 9561 NETIF_F_HW_VLAN_CTAG_FILTER)) 9562 ixgbe_set_rx_mode(netdev); 9563 9564 return 0; 9565 } 9566 9567 /** 9568 * ixgbe_add_udp_tunnel_port - Get notifications about adding UDP tunnel ports 9569 * @dev: The port's netdev 9570 * @ti: Tunnel endpoint information 9571 **/ 9572 static void ixgbe_add_udp_tunnel_port(struct net_device *dev, 9573 struct udp_tunnel_info *ti) 9574 { 9575 struct ixgbe_adapter *adapter = netdev_priv(dev); 9576 struct ixgbe_hw *hw = &adapter->hw; 9577 __be16 port = ti->port; 9578 u32 port_shift = 0; 9579 u32 reg; 9580 9581 if (ti->sa_family != AF_INET) 9582 return; 9583 9584 switch (ti->type) { 9585 case UDP_TUNNEL_TYPE_VXLAN: 9586 if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE)) 9587 return; 9588 9589 if (adapter->vxlan_port == port) 9590 return; 9591 9592 if (adapter->vxlan_port) { 9593 netdev_info(dev, 9594 "VXLAN port %d set, not adding port %d\n", 9595 ntohs(adapter->vxlan_port), 9596 ntohs(port)); 9597 return; 9598 } 9599 9600 adapter->vxlan_port = port; 9601 break; 9602 case UDP_TUNNEL_TYPE_GENEVE: 9603 if (!(adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE)) 9604 return; 9605 9606 if (adapter->geneve_port == port) 9607 return; 9608 9609 if (adapter->geneve_port) { 9610 netdev_info(dev, 9611 "GENEVE port %d set, not adding port %d\n", 9612 ntohs(adapter->geneve_port), 9613 ntohs(port)); 9614 return; 9615 } 9616 9617 port_shift = IXGBE_VXLANCTRL_GENEVE_UDPPORT_SHIFT; 9618 adapter->geneve_port = port; 9619 break; 9620 default: 9621 return; 9622 } 9623 9624 reg = IXGBE_READ_REG(hw, IXGBE_VXLANCTRL) | ntohs(port) << port_shift; 9625 IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, reg); 9626 } 9627 9628 /** 9629 * ixgbe_del_udp_tunnel_port - Get notifications about removing UDP tunnel ports 9630 * @dev: The port's netdev 9631 * @ti: Tunnel endpoint information 9632 **/ 9633 static void ixgbe_del_udp_tunnel_port(struct net_device *dev, 9634 struct udp_tunnel_info *ti) 9635 { 9636 struct ixgbe_adapter *adapter = netdev_priv(dev); 9637 u32 port_mask; 9638 9639 if (ti->type != UDP_TUNNEL_TYPE_VXLAN && 9640 ti->type != UDP_TUNNEL_TYPE_GENEVE) 9641 return; 9642 9643 if (ti->sa_family != AF_INET) 9644 return; 9645 9646 switch (ti->type) { 9647 case UDP_TUNNEL_TYPE_VXLAN: 9648 if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE)) 9649 return; 9650 9651 if (adapter->vxlan_port != ti->port) { 9652 netdev_info(dev, "VXLAN port %d not found\n", 9653 ntohs(ti->port)); 9654 return; 9655 } 9656 9657 port_mask = IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK; 9658 break; 9659 case UDP_TUNNEL_TYPE_GENEVE: 9660 if (!(adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE)) 9661 return; 9662 9663 if (adapter->geneve_port != ti->port) { 9664 netdev_info(dev, "GENEVE port %d not found\n", 9665 ntohs(ti->port)); 9666 return; 9667 } 9668 9669 port_mask = IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK; 9670 break; 9671 default: 9672 return; 9673 } 9674 9675 ixgbe_clear_udp_tunnel_port(adapter, port_mask); 9676 adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED; 9677 } 9678 9679 static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 9680 struct net_device *dev, 9681 const unsigned char *addr, u16 vid, 9682 u16 flags) 9683 { 9684 /* guarantee we can provide a unique filter for the unicast address */ 9685 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) { 9686 struct ixgbe_adapter *adapter = netdev_priv(dev); 9687 u16 pool = VMDQ_P(0); 9688 9689 if (netdev_uc_count(dev) >= ixgbe_available_rars(adapter, pool)) 9690 return -ENOMEM; 9691 } 9692 9693 return ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, flags); 9694 } 9695 9696 /** 9697 * ixgbe_configure_bridge_mode - set various bridge modes 9698 * @adapter - the private structure 9699 * @mode - requested bridge mode 9700 * 9701 * Configure some settings require for various bridge modes. 9702 **/ 9703 static int ixgbe_configure_bridge_mode(struct ixgbe_adapter *adapter, 9704 __u16 mode) 9705 { 9706 struct ixgbe_hw *hw = &adapter->hw; 9707 unsigned int p, num_pools; 9708 u32 vmdctl; 9709 9710 switch (mode) { 9711 case BRIDGE_MODE_VEPA: 9712 /* disable Tx loopback, rely on switch hairpin mode */ 9713 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 0); 9714 9715 /* must enable Rx switching replication to allow multicast 9716 * packet reception on all VFs, and to enable source address 9717 * pruning. 9718 */ 9719 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); 9720 vmdctl |= IXGBE_VT_CTL_REPLEN; 9721 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); 9722 9723 /* enable Rx source address pruning. Note, this requires 9724 * replication to be enabled or else it does nothing. 9725 */ 9726 num_pools = adapter->num_vfs + adapter->num_rx_pools; 9727 for (p = 0; p < num_pools; p++) { 9728 if (hw->mac.ops.set_source_address_pruning) 9729 hw->mac.ops.set_source_address_pruning(hw, 9730 true, 9731 p); 9732 } 9733 break; 9734 case BRIDGE_MODE_VEB: 9735 /* enable Tx loopback for internal VF/PF communication */ 9736 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 9737 IXGBE_PFDTXGSWC_VT_LBEN); 9738 9739 /* disable Rx switching replication unless we have SR-IOV 9740 * virtual functions 9741 */ 9742 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); 9743 if (!adapter->num_vfs) 9744 vmdctl &= ~IXGBE_VT_CTL_REPLEN; 9745 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); 9746 9747 /* disable Rx source address pruning, since we don't expect to 9748 * be receiving external loopback of our transmitted frames. 9749 */ 9750 num_pools = adapter->num_vfs + adapter->num_rx_pools; 9751 for (p = 0; p < num_pools; p++) { 9752 if (hw->mac.ops.set_source_address_pruning) 9753 hw->mac.ops.set_source_address_pruning(hw, 9754 false, 9755 p); 9756 } 9757 break; 9758 default: 9759 return -EINVAL; 9760 } 9761 9762 adapter->bridge_mode = mode; 9763 9764 e_info(drv, "enabling bridge mode: %s\n", 9765 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB"); 9766 9767 return 0; 9768 } 9769 9770 static int ixgbe_ndo_bridge_setlink(struct net_device *dev, 9771 struct nlmsghdr *nlh, u16 flags) 9772 { 9773 struct ixgbe_adapter *adapter = netdev_priv(dev); 9774 struct nlattr *attr, *br_spec; 9775 int rem; 9776 9777 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 9778 return -EOPNOTSUPP; 9779 9780 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 9781 if (!br_spec) 9782 return -EINVAL; 9783 9784 nla_for_each_nested(attr, br_spec, rem) { 9785 int status; 9786 __u16 mode; 9787 9788 if (nla_type(attr) != IFLA_BRIDGE_MODE) 9789 continue; 9790 9791 if (nla_len(attr) < sizeof(mode)) 9792 return -EINVAL; 9793 9794 mode = nla_get_u16(attr); 9795 status = ixgbe_configure_bridge_mode(adapter, mode); 9796 if (status) 9797 return status; 9798 9799 break; 9800 } 9801 9802 return 0; 9803 } 9804 9805 static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, 9806 struct net_device *dev, 9807 u32 filter_mask, int nlflags) 9808 { 9809 struct ixgbe_adapter *adapter = netdev_priv(dev); 9810 9811 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 9812 return 0; 9813 9814 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, 9815 adapter->bridge_mode, 0, 0, nlflags, 9816 filter_mask, NULL); 9817 } 9818 9819 static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev) 9820 { 9821 struct ixgbe_fwd_adapter *fwd_adapter = NULL; 9822 struct ixgbe_adapter *adapter = netdev_priv(pdev); 9823 int used_pools = adapter->num_vfs + adapter->num_rx_pools; 9824 unsigned int limit; 9825 int pool, err; 9826 9827 /* Hardware has a limited number of available pools. Each VF, and the 9828 * PF require a pool. Check to ensure we don't attempt to use more 9829 * then the available number of pools. 9830 */ 9831 if (used_pools >= IXGBE_MAX_VF_FUNCTIONS) 9832 return ERR_PTR(-EINVAL); 9833 9834 #ifdef CONFIG_RPS 9835 if (vdev->num_rx_queues != vdev->num_tx_queues) { 9836 netdev_info(pdev, "%s: Only supports a single queue count for TX and RX\n", 9837 vdev->name); 9838 return ERR_PTR(-EINVAL); 9839 } 9840 #endif 9841 /* Check for hardware restriction on number of rx/tx queues */ 9842 if (vdev->num_tx_queues > IXGBE_MAX_L2A_QUEUES || 9843 vdev->num_tx_queues == IXGBE_BAD_L2A_QUEUE) { 9844 netdev_info(pdev, 9845 "%s: Supports RX/TX Queue counts 1,2, and 4\n", 9846 pdev->name); 9847 return ERR_PTR(-EINVAL); 9848 } 9849 9850 if (((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && 9851 adapter->num_rx_pools > IXGBE_MAX_DCBMACVLANS - 1) || 9852 (adapter->num_rx_pools > IXGBE_MAX_MACVLANS)) 9853 return ERR_PTR(-EBUSY); 9854 9855 fwd_adapter = kzalloc(sizeof(*fwd_adapter), GFP_KERNEL); 9856 if (!fwd_adapter) 9857 return ERR_PTR(-ENOMEM); 9858 9859 pool = find_first_zero_bit(&adapter->fwd_bitmask, 32); 9860 adapter->num_rx_pools++; 9861 set_bit(pool, &adapter->fwd_bitmask); 9862 limit = find_last_bit(&adapter->fwd_bitmask, 32); 9863 9864 /* Enable VMDq flag so device will be set in VM mode */ 9865 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED | IXGBE_FLAG_SRIOV_ENABLED; 9866 adapter->ring_feature[RING_F_VMDQ].limit = limit + 1; 9867 adapter->ring_feature[RING_F_RSS].limit = vdev->num_tx_queues; 9868 9869 /* Force reinit of ring allocation with VMDQ enabled */ 9870 err = ixgbe_setup_tc(pdev, netdev_get_num_tc(pdev)); 9871 if (err) 9872 goto fwd_add_err; 9873 fwd_adapter->pool = pool; 9874 fwd_adapter->real_adapter = adapter; 9875 9876 if (netif_running(pdev)) { 9877 err = ixgbe_fwd_ring_up(vdev, fwd_adapter); 9878 if (err) 9879 goto fwd_add_err; 9880 netif_tx_start_all_queues(vdev); 9881 } 9882 9883 return fwd_adapter; 9884 fwd_add_err: 9885 /* unwind counter and free adapter struct */ 9886 netdev_info(pdev, 9887 "%s: dfwd hardware acceleration failed\n", vdev->name); 9888 clear_bit(pool, &adapter->fwd_bitmask); 9889 adapter->num_rx_pools--; 9890 kfree(fwd_adapter); 9891 return ERR_PTR(err); 9892 } 9893 9894 static void ixgbe_fwd_del(struct net_device *pdev, void *priv) 9895 { 9896 struct ixgbe_fwd_adapter *fwd_adapter = priv; 9897 struct ixgbe_adapter *adapter = fwd_adapter->real_adapter; 9898 unsigned int limit; 9899 9900 clear_bit(fwd_adapter->pool, &adapter->fwd_bitmask); 9901 adapter->num_rx_pools--; 9902 9903 limit = find_last_bit(&adapter->fwd_bitmask, 32); 9904 adapter->ring_feature[RING_F_VMDQ].limit = limit + 1; 9905 ixgbe_fwd_ring_down(fwd_adapter->netdev, fwd_adapter); 9906 9907 /* go back to full RSS if we're done with our VMQs */ 9908 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) { 9909 int rss = min_t(int, ixgbe_max_rss_indices(adapter), 9910 num_online_cpus()); 9911 9912 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 9913 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 9914 adapter->ring_feature[RING_F_RSS].limit = rss; 9915 } 9916 9917 ixgbe_setup_tc(pdev, netdev_get_num_tc(pdev)); 9918 netdev_dbg(pdev, "pool %i:%i queues %i:%i VSI bitmask %lx\n", 9919 fwd_adapter->pool, adapter->num_rx_pools, 9920 fwd_adapter->rx_base_queue, 9921 fwd_adapter->rx_base_queue + adapter->num_rx_queues_per_pool, 9922 adapter->fwd_bitmask); 9923 kfree(fwd_adapter); 9924 } 9925 9926 #define IXGBE_MAX_MAC_HDR_LEN 127 9927 #define IXGBE_MAX_NETWORK_HDR_LEN 511 9928 9929 static netdev_features_t 9930 ixgbe_features_check(struct sk_buff *skb, struct net_device *dev, 9931 netdev_features_t features) 9932 { 9933 unsigned int network_hdr_len, mac_hdr_len; 9934 9935 /* Make certain the headers can be described by a context descriptor */ 9936 mac_hdr_len = skb_network_header(skb) - skb->data; 9937 if (unlikely(mac_hdr_len > IXGBE_MAX_MAC_HDR_LEN)) 9938 return features & ~(NETIF_F_HW_CSUM | 9939 NETIF_F_SCTP_CRC | 9940 NETIF_F_HW_VLAN_CTAG_TX | 9941 NETIF_F_TSO | 9942 NETIF_F_TSO6); 9943 9944 network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb); 9945 if (unlikely(network_hdr_len > IXGBE_MAX_NETWORK_HDR_LEN)) 9946 return features & ~(NETIF_F_HW_CSUM | 9947 NETIF_F_SCTP_CRC | 9948 NETIF_F_TSO | 9949 NETIF_F_TSO6); 9950 9951 /* We can only support IPV4 TSO in tunnels if we can mangle the 9952 * inner IP ID field, so strip TSO if MANGLEID is not supported. 9953 */ 9954 if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) 9955 features &= ~NETIF_F_TSO; 9956 9957 return features; 9958 } 9959 9960 static int ixgbe_xdp_setup(struct net_device *dev, struct bpf_prog *prog) 9961 { 9962 int i, frame_size = dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; 9963 struct ixgbe_adapter *adapter = netdev_priv(dev); 9964 struct bpf_prog *old_prog; 9965 9966 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 9967 return -EINVAL; 9968 9969 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) 9970 return -EINVAL; 9971 9972 /* verify ixgbe ring attributes are sufficient for XDP */ 9973 for (i = 0; i < adapter->num_rx_queues; i++) { 9974 struct ixgbe_ring *ring = adapter->rx_ring[i]; 9975 9976 if (ring_is_rsc_enabled(ring)) 9977 return -EINVAL; 9978 9979 if (frame_size > ixgbe_rx_bufsz(ring)) 9980 return -EINVAL; 9981 } 9982 9983 if (nr_cpu_ids > MAX_XDP_QUEUES) 9984 return -ENOMEM; 9985 9986 old_prog = xchg(&adapter->xdp_prog, prog); 9987 9988 /* If transitioning XDP modes reconfigure rings */ 9989 if (!!prog != !!old_prog) { 9990 int err = ixgbe_setup_tc(dev, netdev_get_num_tc(dev)); 9991 9992 if (err) { 9993 rcu_assign_pointer(adapter->xdp_prog, old_prog); 9994 return -EINVAL; 9995 } 9996 } else { 9997 for (i = 0; i < adapter->num_rx_queues; i++) 9998 xchg(&adapter->rx_ring[i]->xdp_prog, adapter->xdp_prog); 9999 } 10000 10001 if (old_prog) 10002 bpf_prog_put(old_prog); 10003 10004 return 0; 10005 } 10006 10007 static int ixgbe_xdp(struct net_device *dev, struct netdev_bpf *xdp) 10008 { 10009 struct ixgbe_adapter *adapter = netdev_priv(dev); 10010 10011 switch (xdp->command) { 10012 case XDP_SETUP_PROG: 10013 return ixgbe_xdp_setup(dev, xdp->prog); 10014 case XDP_QUERY_PROG: 10015 xdp->prog_attached = !!(adapter->xdp_prog); 10016 xdp->prog_id = adapter->xdp_prog ? 10017 adapter->xdp_prog->aux->id : 0; 10018 return 0; 10019 default: 10020 return -EINVAL; 10021 } 10022 } 10023 10024 static int ixgbe_xdp_xmit(struct net_device *dev, struct xdp_buff *xdp) 10025 { 10026 struct ixgbe_adapter *adapter = netdev_priv(dev); 10027 struct ixgbe_ring *ring; 10028 int err; 10029 10030 if (unlikely(test_bit(__IXGBE_DOWN, &adapter->state))) 10031 return -ENETDOWN; 10032 10033 /* During program transitions its possible adapter->xdp_prog is assigned 10034 * but ring has not been configured yet. In this case simply abort xmit. 10035 */ 10036 ring = adapter->xdp_prog ? adapter->xdp_ring[smp_processor_id()] : NULL; 10037 if (unlikely(!ring)) 10038 return -ENXIO; 10039 10040 err = ixgbe_xmit_xdp_ring(adapter, xdp); 10041 if (err != IXGBE_XDP_TX) 10042 return -ENOSPC; 10043 10044 return 0; 10045 } 10046 10047 static void ixgbe_xdp_flush(struct net_device *dev) 10048 { 10049 struct ixgbe_adapter *adapter = netdev_priv(dev); 10050 struct ixgbe_ring *ring; 10051 10052 /* Its possible the device went down between xdp xmit and flush so 10053 * we need to ensure device is still up. 10054 */ 10055 if (unlikely(test_bit(__IXGBE_DOWN, &adapter->state))) 10056 return; 10057 10058 ring = adapter->xdp_prog ? adapter->xdp_ring[smp_processor_id()] : NULL; 10059 if (unlikely(!ring)) 10060 return; 10061 10062 /* Force memory writes to complete before letting h/w know there 10063 * are new descriptors to fetch. 10064 */ 10065 wmb(); 10066 writel(ring->next_to_use, ring->tail); 10067 10068 return; 10069 } 10070 10071 static const struct net_device_ops ixgbe_netdev_ops = { 10072 .ndo_open = ixgbe_open, 10073 .ndo_stop = ixgbe_close, 10074 .ndo_start_xmit = ixgbe_xmit_frame, 10075 .ndo_select_queue = ixgbe_select_queue, 10076 .ndo_set_rx_mode = ixgbe_set_rx_mode, 10077 .ndo_validate_addr = eth_validate_addr, 10078 .ndo_set_mac_address = ixgbe_set_mac, 10079 .ndo_change_mtu = ixgbe_change_mtu, 10080 .ndo_tx_timeout = ixgbe_tx_timeout, 10081 .ndo_set_tx_maxrate = ixgbe_tx_maxrate, 10082 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid, 10083 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid, 10084 .ndo_do_ioctl = ixgbe_ioctl, 10085 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac, 10086 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan, 10087 .ndo_set_vf_rate = ixgbe_ndo_set_vf_bw, 10088 .ndo_set_vf_spoofchk = ixgbe_ndo_set_vf_spoofchk, 10089 .ndo_set_vf_rss_query_en = ixgbe_ndo_set_vf_rss_query_en, 10090 .ndo_set_vf_trust = ixgbe_ndo_set_vf_trust, 10091 .ndo_get_vf_config = ixgbe_ndo_get_vf_config, 10092 .ndo_get_stats64 = ixgbe_get_stats64, 10093 .ndo_setup_tc = __ixgbe_setup_tc, 10094 #ifdef CONFIG_NET_POLL_CONTROLLER 10095 .ndo_poll_controller = ixgbe_netpoll, 10096 #endif 10097 #ifdef IXGBE_FCOE 10098 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get, 10099 .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target, 10100 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put, 10101 .ndo_fcoe_enable = ixgbe_fcoe_enable, 10102 .ndo_fcoe_disable = ixgbe_fcoe_disable, 10103 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn, 10104 .ndo_fcoe_get_hbainfo = ixgbe_fcoe_get_hbainfo, 10105 #endif /* IXGBE_FCOE */ 10106 .ndo_set_features = ixgbe_set_features, 10107 .ndo_fix_features = ixgbe_fix_features, 10108 .ndo_fdb_add = ixgbe_ndo_fdb_add, 10109 .ndo_bridge_setlink = ixgbe_ndo_bridge_setlink, 10110 .ndo_bridge_getlink = ixgbe_ndo_bridge_getlink, 10111 .ndo_dfwd_add_station = ixgbe_fwd_add, 10112 .ndo_dfwd_del_station = ixgbe_fwd_del, 10113 .ndo_udp_tunnel_add = ixgbe_add_udp_tunnel_port, 10114 .ndo_udp_tunnel_del = ixgbe_del_udp_tunnel_port, 10115 .ndo_features_check = ixgbe_features_check, 10116 .ndo_bpf = ixgbe_xdp, 10117 .ndo_xdp_xmit = ixgbe_xdp_xmit, 10118 .ndo_xdp_flush = ixgbe_xdp_flush, 10119 }; 10120 10121 /** 10122 * ixgbe_enumerate_functions - Get the number of ports this device has 10123 * @adapter: adapter structure 10124 * 10125 * This function enumerates the phsyical functions co-located on a single slot, 10126 * in order to determine how many ports a device has. This is most useful in 10127 * determining the required GT/s of PCIe bandwidth necessary for optimal 10128 * performance. 10129 **/ 10130 static inline int ixgbe_enumerate_functions(struct ixgbe_adapter *adapter) 10131 { 10132 struct pci_dev *entry, *pdev = adapter->pdev; 10133 int physfns = 0; 10134 10135 /* Some cards can not use the generic count PCIe functions method, 10136 * because they are behind a parent switch, so we hardcode these with 10137 * the correct number of functions. 10138 */ 10139 if (ixgbe_pcie_from_parent(&adapter->hw)) 10140 physfns = 4; 10141 10142 list_for_each_entry(entry, &adapter->pdev->bus->devices, bus_list) { 10143 /* don't count virtual functions */ 10144 if (entry->is_virtfn) 10145 continue; 10146 10147 /* When the devices on the bus don't all match our device ID, 10148 * we can't reliably determine the correct number of 10149 * functions. This can occur if a function has been direct 10150 * attached to a virtual machine using VT-d, for example. In 10151 * this case, simply return -1 to indicate this. 10152 */ 10153 if ((entry->vendor != pdev->vendor) || 10154 (entry->device != pdev->device)) 10155 return -1; 10156 10157 physfns++; 10158 } 10159 10160 return physfns; 10161 } 10162 10163 /** 10164 * ixgbe_wol_supported - Check whether device supports WoL 10165 * @adapter: the adapter private structure 10166 * @device_id: the device ID 10167 * @subdev_id: the subsystem device ID 10168 * 10169 * This function is used by probe and ethtool to determine 10170 * which devices have WoL support 10171 * 10172 **/ 10173 bool ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id, 10174 u16 subdevice_id) 10175 { 10176 struct ixgbe_hw *hw = &adapter->hw; 10177 u16 wol_cap = adapter->eeprom_cap & IXGBE_DEVICE_CAPS_WOL_MASK; 10178 10179 /* WOL not supported on 82598 */ 10180 if (hw->mac.type == ixgbe_mac_82598EB) 10181 return false; 10182 10183 /* check eeprom to see if WOL is enabled for X540 and newer */ 10184 if (hw->mac.type >= ixgbe_mac_X540) { 10185 if ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0_1) || 10186 ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0) && 10187 (hw->bus.func == 0))) 10188 return true; 10189 } 10190 10191 /* WOL is determined based on device IDs for 82599 MACs */ 10192 switch (device_id) { 10193 case IXGBE_DEV_ID_82599_SFP: 10194 /* Only these subdevices could supports WOL */ 10195 switch (subdevice_id) { 10196 case IXGBE_SUBDEV_ID_82599_560FLR: 10197 case IXGBE_SUBDEV_ID_82599_LOM_SNAP6: 10198 case IXGBE_SUBDEV_ID_82599_SFP_WOL0: 10199 case IXGBE_SUBDEV_ID_82599_SFP_2OCP: 10200 /* only support first port */ 10201 if (hw->bus.func != 0) 10202 break; 10203 /* fall through */ 10204 case IXGBE_SUBDEV_ID_82599_SP_560FLR: 10205 case IXGBE_SUBDEV_ID_82599_SFP: 10206 case IXGBE_SUBDEV_ID_82599_RNDC: 10207 case IXGBE_SUBDEV_ID_82599_ECNA_DP: 10208 case IXGBE_SUBDEV_ID_82599_SFP_1OCP: 10209 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM1: 10210 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM2: 10211 return true; 10212 } 10213 break; 10214 case IXGBE_DEV_ID_82599EN_SFP: 10215 /* Only these subdevices support WOL */ 10216 switch (subdevice_id) { 10217 case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1: 10218 return true; 10219 } 10220 break; 10221 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE: 10222 /* All except this subdevice support WOL */ 10223 if (subdevice_id != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ) 10224 return true; 10225 break; 10226 case IXGBE_DEV_ID_82599_KX4: 10227 return true; 10228 default: 10229 break; 10230 } 10231 10232 return false; 10233 } 10234 10235 /** 10236 * ixgbe_probe - Device Initialization Routine 10237 * @pdev: PCI device information struct 10238 * @ent: entry in ixgbe_pci_tbl 10239 * 10240 * Returns 0 on success, negative on failure 10241 * 10242 * ixgbe_probe initializes an adapter identified by a pci_dev structure. 10243 * The OS initialization, configuring of the adapter private structure, 10244 * and a hardware reset occur. 10245 **/ 10246 static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 10247 { 10248 struct net_device *netdev; 10249 struct ixgbe_adapter *adapter = NULL; 10250 struct ixgbe_hw *hw; 10251 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; 10252 int i, err, pci_using_dac, expected_gts; 10253 unsigned int indices = MAX_TX_QUEUES; 10254 u8 part_str[IXGBE_PBANUM_LENGTH]; 10255 bool disable_dev = false; 10256 #ifdef IXGBE_FCOE 10257 u16 device_caps; 10258 #endif 10259 u32 eec; 10260 10261 /* Catch broken hardware that put the wrong VF device ID in 10262 * the PCIe SR-IOV capability. 10263 */ 10264 if (pdev->is_virtfn) { 10265 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", 10266 pci_name(pdev), pdev->vendor, pdev->device); 10267 return -EINVAL; 10268 } 10269 10270 err = pci_enable_device_mem(pdev); 10271 if (err) 10272 return err; 10273 10274 if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) { 10275 pci_using_dac = 1; 10276 } else { 10277 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 10278 if (err) { 10279 dev_err(&pdev->dev, 10280 "No usable DMA configuration, aborting\n"); 10281 goto err_dma; 10282 } 10283 pci_using_dac = 0; 10284 } 10285 10286 err = pci_request_mem_regions(pdev, ixgbe_driver_name); 10287 if (err) { 10288 dev_err(&pdev->dev, 10289 "pci_request_selected_regions failed 0x%x\n", err); 10290 goto err_pci_reg; 10291 } 10292 10293 pci_enable_pcie_error_reporting(pdev); 10294 10295 pci_set_master(pdev); 10296 pci_save_state(pdev); 10297 10298 if (ii->mac == ixgbe_mac_82598EB) { 10299 #ifdef CONFIG_IXGBE_DCB 10300 /* 8 TC w/ 4 queues per TC */ 10301 indices = 4 * MAX_TRAFFIC_CLASS; 10302 #else 10303 indices = IXGBE_MAX_RSS_INDICES; 10304 #endif 10305 } 10306 10307 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices); 10308 if (!netdev) { 10309 err = -ENOMEM; 10310 goto err_alloc_etherdev; 10311 } 10312 10313 SET_NETDEV_DEV(netdev, &pdev->dev); 10314 10315 adapter = netdev_priv(netdev); 10316 10317 adapter->netdev = netdev; 10318 adapter->pdev = pdev; 10319 hw = &adapter->hw; 10320 hw->back = adapter; 10321 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); 10322 10323 hw->hw_addr = ioremap(pci_resource_start(pdev, 0), 10324 pci_resource_len(pdev, 0)); 10325 adapter->io_addr = hw->hw_addr; 10326 if (!hw->hw_addr) { 10327 err = -EIO; 10328 goto err_ioremap; 10329 } 10330 10331 netdev->netdev_ops = &ixgbe_netdev_ops; 10332 ixgbe_set_ethtool_ops(netdev); 10333 netdev->watchdog_timeo = 5 * HZ; 10334 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); 10335 10336 /* Setup hw api */ 10337 hw->mac.ops = *ii->mac_ops; 10338 hw->mac.type = ii->mac; 10339 hw->mvals = ii->mvals; 10340 if (ii->link_ops) 10341 hw->link.ops = *ii->link_ops; 10342 10343 /* EEPROM */ 10344 hw->eeprom.ops = *ii->eeprom_ops; 10345 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); 10346 if (ixgbe_removed(hw->hw_addr)) { 10347 err = -EIO; 10348 goto err_ioremap; 10349 } 10350 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */ 10351 if (!(eec & BIT(8))) 10352 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic; 10353 10354 /* PHY */ 10355 hw->phy.ops = *ii->phy_ops; 10356 hw->phy.sfp_type = ixgbe_sfp_type_unknown; 10357 /* ixgbe_identify_phy_generic will set prtad and mmds properly */ 10358 hw->phy.mdio.prtad = MDIO_PRTAD_NONE; 10359 hw->phy.mdio.mmds = 0; 10360 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 10361 hw->phy.mdio.dev = netdev; 10362 hw->phy.mdio.mdio_read = ixgbe_mdio_read; 10363 hw->phy.mdio.mdio_write = ixgbe_mdio_write; 10364 10365 /* setup the private structure */ 10366 err = ixgbe_sw_init(adapter, ii); 10367 if (err) 10368 goto err_sw_init; 10369 10370 /* Make sure the SWFW semaphore is in a valid state */ 10371 if (hw->mac.ops.init_swfw_sync) 10372 hw->mac.ops.init_swfw_sync(hw); 10373 10374 /* Make it possible the adapter to be woken up via WOL */ 10375 switch (adapter->hw.mac.type) { 10376 case ixgbe_mac_82599EB: 10377 case ixgbe_mac_X540: 10378 case ixgbe_mac_X550: 10379 case ixgbe_mac_X550EM_x: 10380 case ixgbe_mac_x550em_a: 10381 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 10382 break; 10383 default: 10384 break; 10385 } 10386 10387 /* 10388 * If there is a fan on this device and it has failed log the 10389 * failure. 10390 */ 10391 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { 10392 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); 10393 if (esdp & IXGBE_ESDP_SDP1) 10394 e_crit(probe, "Fan has stopped, replace the adapter\n"); 10395 } 10396 10397 if (allow_unsupported_sfp) 10398 hw->allow_unsupported_sfp = allow_unsupported_sfp; 10399 10400 /* reset_hw fills in the perm_addr as well */ 10401 hw->phy.reset_if_overtemp = true; 10402 err = hw->mac.ops.reset_hw(hw); 10403 hw->phy.reset_if_overtemp = false; 10404 ixgbe_set_eee_capable(adapter); 10405 if (err == IXGBE_ERR_SFP_NOT_PRESENT) { 10406 err = 0; 10407 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { 10408 e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n"); 10409 e_dev_err("Reload the driver after installing a supported module.\n"); 10410 goto err_sw_init; 10411 } else if (err) { 10412 e_dev_err("HW Init failed: %d\n", err); 10413 goto err_sw_init; 10414 } 10415 10416 #ifdef CONFIG_PCI_IOV 10417 /* SR-IOV not supported on the 82598 */ 10418 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 10419 goto skip_sriov; 10420 /* Mailbox */ 10421 ixgbe_init_mbx_params_pf(hw); 10422 hw->mbx.ops = ii->mbx_ops; 10423 pci_sriov_set_totalvfs(pdev, IXGBE_MAX_VFS_DRV_LIMIT); 10424 ixgbe_enable_sriov(adapter, max_vfs); 10425 skip_sriov: 10426 10427 #endif 10428 netdev->features = NETIF_F_SG | 10429 NETIF_F_TSO | 10430 NETIF_F_TSO6 | 10431 NETIF_F_RXHASH | 10432 NETIF_F_RXCSUM | 10433 NETIF_F_HW_CSUM; 10434 10435 #define IXGBE_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \ 10436 NETIF_F_GSO_GRE_CSUM | \ 10437 NETIF_F_GSO_IPXIP4 | \ 10438 NETIF_F_GSO_IPXIP6 | \ 10439 NETIF_F_GSO_UDP_TUNNEL | \ 10440 NETIF_F_GSO_UDP_TUNNEL_CSUM) 10441 10442 netdev->gso_partial_features = IXGBE_GSO_PARTIAL_FEATURES; 10443 netdev->features |= NETIF_F_GSO_PARTIAL | 10444 IXGBE_GSO_PARTIAL_FEATURES; 10445 10446 if (hw->mac.type >= ixgbe_mac_82599EB) 10447 netdev->features |= NETIF_F_SCTP_CRC; 10448 10449 /* copy netdev features into list of user selectable features */ 10450 netdev->hw_features |= netdev->features | 10451 NETIF_F_HW_VLAN_CTAG_FILTER | 10452 NETIF_F_HW_VLAN_CTAG_RX | 10453 NETIF_F_HW_VLAN_CTAG_TX | 10454 NETIF_F_RXALL | 10455 NETIF_F_HW_L2FW_DOFFLOAD; 10456 10457 if (hw->mac.type >= ixgbe_mac_82599EB) 10458 netdev->hw_features |= NETIF_F_NTUPLE | 10459 NETIF_F_HW_TC; 10460 10461 if (pci_using_dac) 10462 netdev->features |= NETIF_F_HIGHDMA; 10463 10464 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; 10465 netdev->hw_enc_features |= netdev->vlan_features; 10466 netdev->mpls_features |= NETIF_F_SG | 10467 NETIF_F_TSO | 10468 NETIF_F_TSO6 | 10469 NETIF_F_HW_CSUM; 10470 netdev->mpls_features |= IXGBE_GSO_PARTIAL_FEATURES; 10471 10472 /* set this bit last since it cannot be part of vlan_features */ 10473 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | 10474 NETIF_F_HW_VLAN_CTAG_RX | 10475 NETIF_F_HW_VLAN_CTAG_TX; 10476 10477 netdev->priv_flags |= IFF_UNICAST_FLT; 10478 netdev->priv_flags |= IFF_SUPP_NOFCS; 10479 10480 /* MTU range: 68 - 9710 */ 10481 netdev->min_mtu = ETH_MIN_MTU; 10482 netdev->max_mtu = IXGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN); 10483 10484 #ifdef CONFIG_IXGBE_DCB 10485 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE) 10486 netdev->dcbnl_ops = &ixgbe_dcbnl_ops; 10487 #endif 10488 10489 #ifdef IXGBE_FCOE 10490 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) { 10491 unsigned int fcoe_l; 10492 10493 if (hw->mac.ops.get_device_caps) { 10494 hw->mac.ops.get_device_caps(hw, &device_caps); 10495 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS) 10496 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 10497 } 10498 10499 10500 fcoe_l = min_t(int, IXGBE_FCRETA_SIZE, num_online_cpus()); 10501 adapter->ring_feature[RING_F_FCOE].limit = fcoe_l; 10502 10503 netdev->features |= NETIF_F_FSO | 10504 NETIF_F_FCOE_CRC; 10505 10506 netdev->vlan_features |= NETIF_F_FSO | 10507 NETIF_F_FCOE_CRC | 10508 NETIF_F_FCOE_MTU; 10509 } 10510 #endif /* IXGBE_FCOE */ 10511 10512 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) 10513 netdev->hw_features |= NETIF_F_LRO; 10514 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 10515 netdev->features |= NETIF_F_LRO; 10516 10517 /* make sure the EEPROM is good */ 10518 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) { 10519 e_dev_err("The EEPROM Checksum Is Not Valid\n"); 10520 err = -EIO; 10521 goto err_sw_init; 10522 } 10523 10524 eth_platform_get_mac_address(&adapter->pdev->dev, 10525 adapter->hw.mac.perm_addr); 10526 10527 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len); 10528 10529 if (!is_valid_ether_addr(netdev->dev_addr)) { 10530 e_dev_err("invalid MAC address\n"); 10531 err = -EIO; 10532 goto err_sw_init; 10533 } 10534 10535 /* Set hw->mac.addr to permanent MAC address */ 10536 ether_addr_copy(hw->mac.addr, hw->mac.perm_addr); 10537 ixgbe_mac_set_default_filter(adapter); 10538 10539 timer_setup(&adapter->service_timer, ixgbe_service_timer, 0); 10540 10541 if (ixgbe_removed(hw->hw_addr)) { 10542 err = -EIO; 10543 goto err_sw_init; 10544 } 10545 INIT_WORK(&adapter->service_task, ixgbe_service_task); 10546 set_bit(__IXGBE_SERVICE_INITED, &adapter->state); 10547 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 10548 10549 err = ixgbe_init_interrupt_scheme(adapter); 10550 if (err) 10551 goto err_sw_init; 10552 10553 for (i = 0; i < adapter->num_rx_queues; i++) 10554 u64_stats_init(&adapter->rx_ring[i]->syncp); 10555 for (i = 0; i < adapter->num_tx_queues; i++) 10556 u64_stats_init(&adapter->tx_ring[i]->syncp); 10557 for (i = 0; i < adapter->num_xdp_queues; i++) 10558 u64_stats_init(&adapter->xdp_ring[i]->syncp); 10559 10560 /* WOL not supported for all devices */ 10561 adapter->wol = 0; 10562 hw->eeprom.ops.read(hw, 0x2c, &adapter->eeprom_cap); 10563 hw->wol_enabled = ixgbe_wol_supported(adapter, pdev->device, 10564 pdev->subsystem_device); 10565 if (hw->wol_enabled) 10566 adapter->wol = IXGBE_WUFC_MAG; 10567 10568 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); 10569 10570 /* save off EEPROM version number */ 10571 hw->eeprom.ops.read(hw, 0x2e, &adapter->eeprom_verh); 10572 hw->eeprom.ops.read(hw, 0x2d, &adapter->eeprom_verl); 10573 10574 /* pick up the PCI bus settings for reporting later */ 10575 if (ixgbe_pcie_from_parent(hw)) 10576 ixgbe_get_parent_bus_info(adapter); 10577 else 10578 hw->mac.ops.get_bus_info(hw); 10579 10580 /* calculate the expected PCIe bandwidth required for optimal 10581 * performance. Note that some older parts will never have enough 10582 * bandwidth due to being older generation PCIe parts. We clamp these 10583 * parts to ensure no warning is displayed if it can't be fixed. 10584 */ 10585 switch (hw->mac.type) { 10586 case ixgbe_mac_82598EB: 10587 expected_gts = min(ixgbe_enumerate_functions(adapter) * 10, 16); 10588 break; 10589 default: 10590 expected_gts = ixgbe_enumerate_functions(adapter) * 10; 10591 break; 10592 } 10593 10594 /* don't check link if we failed to enumerate functions */ 10595 if (expected_gts > 0) 10596 ixgbe_check_minimum_link(adapter, expected_gts); 10597 10598 err = ixgbe_read_pba_string_generic(hw, part_str, sizeof(part_str)); 10599 if (err) 10600 strlcpy(part_str, "Unknown", sizeof(part_str)); 10601 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present) 10602 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n", 10603 hw->mac.type, hw->phy.type, hw->phy.sfp_type, 10604 part_str); 10605 else 10606 e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n", 10607 hw->mac.type, hw->phy.type, part_str); 10608 10609 e_dev_info("%pM\n", netdev->dev_addr); 10610 10611 /* reset the hardware with the new settings */ 10612 err = hw->mac.ops.start_hw(hw); 10613 if (err == IXGBE_ERR_EEPROM_VERSION) { 10614 /* We are running on a pre-production device, log a warning */ 10615 e_dev_warn("This device is a pre-production adapter/LOM. " 10616 "Please be aware there may be issues associated " 10617 "with your hardware. If you are experiencing " 10618 "problems please contact your Intel or hardware " 10619 "representative who provided you with this " 10620 "hardware.\n"); 10621 } 10622 strcpy(netdev->name, "eth%d"); 10623 pci_set_drvdata(pdev, adapter); 10624 err = register_netdev(netdev); 10625 if (err) 10626 goto err_register; 10627 10628 10629 /* power down the optics for 82599 SFP+ fiber */ 10630 if (hw->mac.ops.disable_tx_laser) 10631 hw->mac.ops.disable_tx_laser(hw); 10632 10633 /* carrier off reporting is important to ethtool even BEFORE open */ 10634 netif_carrier_off(netdev); 10635 10636 #ifdef CONFIG_IXGBE_DCA 10637 if (dca_add_requester(&pdev->dev) == 0) { 10638 adapter->flags |= IXGBE_FLAG_DCA_ENABLED; 10639 ixgbe_setup_dca(adapter); 10640 } 10641 #endif 10642 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 10643 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs); 10644 for (i = 0; i < adapter->num_vfs; i++) 10645 ixgbe_vf_configuration(pdev, (i | 0x10000000)); 10646 } 10647 10648 /* firmware requires driver version to be 0xFFFFFFFF 10649 * since os does not support feature 10650 */ 10651 if (hw->mac.ops.set_fw_drv_ver) 10652 hw->mac.ops.set_fw_drv_ver(hw, 0xFF, 0xFF, 0xFF, 0xFF, 10653 sizeof(ixgbe_driver_version) - 1, 10654 ixgbe_driver_version); 10655 10656 /* add san mac addr to netdev */ 10657 ixgbe_add_sanmac_netdev(netdev); 10658 10659 e_dev_info("%s\n", ixgbe_default_device_descr); 10660 10661 #ifdef CONFIG_IXGBE_HWMON 10662 if (ixgbe_sysfs_init(adapter)) 10663 e_err(probe, "failed to allocate sysfs resources\n"); 10664 #endif /* CONFIG_IXGBE_HWMON */ 10665 10666 ixgbe_dbg_adapter_init(adapter); 10667 10668 /* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */ 10669 if (ixgbe_mng_enabled(hw) && ixgbe_is_sfp(hw) && hw->mac.ops.setup_link) 10670 hw->mac.ops.setup_link(hw, 10671 IXGBE_LINK_SPEED_10GB_FULL | IXGBE_LINK_SPEED_1GB_FULL, 10672 true); 10673 10674 return 0; 10675 10676 err_register: 10677 ixgbe_release_hw_control(adapter); 10678 ixgbe_clear_interrupt_scheme(adapter); 10679 err_sw_init: 10680 ixgbe_disable_sriov(adapter); 10681 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; 10682 iounmap(adapter->io_addr); 10683 kfree(adapter->jump_tables[0]); 10684 kfree(adapter->mac_table); 10685 kfree(adapter->rss_key); 10686 err_ioremap: 10687 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); 10688 free_netdev(netdev); 10689 err_alloc_etherdev: 10690 pci_release_mem_regions(pdev); 10691 err_pci_reg: 10692 err_dma: 10693 if (!adapter || disable_dev) 10694 pci_disable_device(pdev); 10695 return err; 10696 } 10697 10698 /** 10699 * ixgbe_remove - Device Removal Routine 10700 * @pdev: PCI device information struct 10701 * 10702 * ixgbe_remove is called by the PCI subsystem to alert the driver 10703 * that it should release a PCI device. The could be caused by a 10704 * Hot-Plug event, or because the driver is going to be removed from 10705 * memory. 10706 **/ 10707 static void ixgbe_remove(struct pci_dev *pdev) 10708 { 10709 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 10710 struct net_device *netdev; 10711 bool disable_dev; 10712 int i; 10713 10714 /* if !adapter then we already cleaned up in probe */ 10715 if (!adapter) 10716 return; 10717 10718 netdev = adapter->netdev; 10719 ixgbe_dbg_adapter_exit(adapter); 10720 10721 set_bit(__IXGBE_REMOVING, &adapter->state); 10722 cancel_work_sync(&adapter->service_task); 10723 10724 10725 #ifdef CONFIG_IXGBE_DCA 10726 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { 10727 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; 10728 dca_remove_requester(&pdev->dev); 10729 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 10730 IXGBE_DCA_CTRL_DCA_DISABLE); 10731 } 10732 10733 #endif 10734 #ifdef CONFIG_IXGBE_HWMON 10735 ixgbe_sysfs_exit(adapter); 10736 #endif /* CONFIG_IXGBE_HWMON */ 10737 10738 /* remove the added san mac */ 10739 ixgbe_del_sanmac_netdev(netdev); 10740 10741 #ifdef CONFIG_PCI_IOV 10742 ixgbe_disable_sriov(adapter); 10743 #endif 10744 if (netdev->reg_state == NETREG_REGISTERED) 10745 unregister_netdev(netdev); 10746 10747 ixgbe_clear_interrupt_scheme(adapter); 10748 10749 ixgbe_release_hw_control(adapter); 10750 10751 #ifdef CONFIG_DCB 10752 kfree(adapter->ixgbe_ieee_pfc); 10753 kfree(adapter->ixgbe_ieee_ets); 10754 10755 #endif 10756 iounmap(adapter->io_addr); 10757 pci_release_mem_regions(pdev); 10758 10759 e_dev_info("complete\n"); 10760 10761 for (i = 0; i < IXGBE_MAX_LINK_HANDLE; i++) { 10762 if (adapter->jump_tables[i]) { 10763 kfree(adapter->jump_tables[i]->input); 10764 kfree(adapter->jump_tables[i]->mask); 10765 } 10766 kfree(adapter->jump_tables[i]); 10767 } 10768 10769 kfree(adapter->mac_table); 10770 kfree(adapter->rss_key); 10771 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); 10772 free_netdev(netdev); 10773 10774 pci_disable_pcie_error_reporting(pdev); 10775 10776 if (disable_dev) 10777 pci_disable_device(pdev); 10778 } 10779 10780 /** 10781 * ixgbe_io_error_detected - called when PCI error is detected 10782 * @pdev: Pointer to PCI device 10783 * @state: The current pci connection state 10784 * 10785 * This function is called after a PCI bus error affecting 10786 * this device has been detected. 10787 */ 10788 static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, 10789 pci_channel_state_t state) 10790 { 10791 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 10792 struct net_device *netdev = adapter->netdev; 10793 10794 #ifdef CONFIG_PCI_IOV 10795 struct ixgbe_hw *hw = &adapter->hw; 10796 struct pci_dev *bdev, *vfdev; 10797 u32 dw0, dw1, dw2, dw3; 10798 int vf, pos; 10799 u16 req_id, pf_func; 10800 10801 if (adapter->hw.mac.type == ixgbe_mac_82598EB || 10802 adapter->num_vfs == 0) 10803 goto skip_bad_vf_detection; 10804 10805 bdev = pdev->bus->self; 10806 while (bdev && (pci_pcie_type(bdev) != PCI_EXP_TYPE_ROOT_PORT)) 10807 bdev = bdev->bus->self; 10808 10809 if (!bdev) 10810 goto skip_bad_vf_detection; 10811 10812 pos = pci_find_ext_capability(bdev, PCI_EXT_CAP_ID_ERR); 10813 if (!pos) 10814 goto skip_bad_vf_detection; 10815 10816 dw0 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG); 10817 dw1 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 4); 10818 dw2 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 8); 10819 dw3 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 12); 10820 if (ixgbe_removed(hw->hw_addr)) 10821 goto skip_bad_vf_detection; 10822 10823 req_id = dw1 >> 16; 10824 /* On the 82599 if bit 7 of the requestor ID is set then it's a VF */ 10825 if (!(req_id & 0x0080)) 10826 goto skip_bad_vf_detection; 10827 10828 pf_func = req_id & 0x01; 10829 if ((pf_func & 1) == (pdev->devfn & 1)) { 10830 unsigned int device_id; 10831 10832 vf = (req_id & 0x7F) >> 1; 10833 e_dev_err("VF %d has caused a PCIe error\n", vf); 10834 e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: " 10835 "%8.8x\tdw3: %8.8x\n", 10836 dw0, dw1, dw2, dw3); 10837 switch (adapter->hw.mac.type) { 10838 case ixgbe_mac_82599EB: 10839 device_id = IXGBE_82599_VF_DEVICE_ID; 10840 break; 10841 case ixgbe_mac_X540: 10842 device_id = IXGBE_X540_VF_DEVICE_ID; 10843 break; 10844 case ixgbe_mac_X550: 10845 device_id = IXGBE_DEV_ID_X550_VF; 10846 break; 10847 case ixgbe_mac_X550EM_x: 10848 device_id = IXGBE_DEV_ID_X550EM_X_VF; 10849 break; 10850 case ixgbe_mac_x550em_a: 10851 device_id = IXGBE_DEV_ID_X550EM_A_VF; 10852 break; 10853 default: 10854 device_id = 0; 10855 break; 10856 } 10857 10858 /* Find the pci device of the offending VF */ 10859 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, device_id, NULL); 10860 while (vfdev) { 10861 if (vfdev->devfn == (req_id & 0xFF)) 10862 break; 10863 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, 10864 device_id, vfdev); 10865 } 10866 /* 10867 * There's a slim chance the VF could have been hot plugged, 10868 * so if it is no longer present we don't need to issue the 10869 * VFLR. Just clean up the AER in that case. 10870 */ 10871 if (vfdev) { 10872 pcie_flr(vfdev); 10873 /* Free device reference count */ 10874 pci_dev_put(vfdev); 10875 } 10876 10877 pci_cleanup_aer_uncorrect_error_status(pdev); 10878 } 10879 10880 /* 10881 * Even though the error may have occurred on the other port 10882 * we still need to increment the vf error reference count for 10883 * both ports because the I/O resume function will be called 10884 * for both of them. 10885 */ 10886 adapter->vferr_refcount++; 10887 10888 return PCI_ERS_RESULT_RECOVERED; 10889 10890 skip_bad_vf_detection: 10891 #endif /* CONFIG_PCI_IOV */ 10892 if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) 10893 return PCI_ERS_RESULT_DISCONNECT; 10894 10895 if (!netif_device_present(netdev)) 10896 return PCI_ERS_RESULT_DISCONNECT; 10897 10898 rtnl_lock(); 10899 netif_device_detach(netdev); 10900 10901 if (state == pci_channel_io_perm_failure) { 10902 rtnl_unlock(); 10903 return PCI_ERS_RESULT_DISCONNECT; 10904 } 10905 10906 if (netif_running(netdev)) 10907 ixgbe_close_suspend(adapter); 10908 10909 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) 10910 pci_disable_device(pdev); 10911 rtnl_unlock(); 10912 10913 /* Request a slot reset. */ 10914 return PCI_ERS_RESULT_NEED_RESET; 10915 } 10916 10917 /** 10918 * ixgbe_io_slot_reset - called after the pci bus has been reset. 10919 * @pdev: Pointer to PCI device 10920 * 10921 * Restart the card from scratch, as if from a cold-boot. 10922 */ 10923 static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) 10924 { 10925 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 10926 pci_ers_result_t result; 10927 int err; 10928 10929 if (pci_enable_device_mem(pdev)) { 10930 e_err(probe, "Cannot re-enable PCI device after reset.\n"); 10931 result = PCI_ERS_RESULT_DISCONNECT; 10932 } else { 10933 smp_mb__before_atomic(); 10934 clear_bit(__IXGBE_DISABLED, &adapter->state); 10935 adapter->hw.hw_addr = adapter->io_addr; 10936 pci_set_master(pdev); 10937 pci_restore_state(pdev); 10938 pci_save_state(pdev); 10939 10940 pci_wake_from_d3(pdev, false); 10941 10942 ixgbe_reset(adapter); 10943 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 10944 result = PCI_ERS_RESULT_RECOVERED; 10945 } 10946 10947 err = pci_cleanup_aer_uncorrect_error_status(pdev); 10948 if (err) { 10949 e_dev_err("pci_cleanup_aer_uncorrect_error_status " 10950 "failed 0x%0x\n", err); 10951 /* non-fatal, continue */ 10952 } 10953 10954 return result; 10955 } 10956 10957 /** 10958 * ixgbe_io_resume - called when traffic can start flowing again. 10959 * @pdev: Pointer to PCI device 10960 * 10961 * This callback is called when the error recovery driver tells us that 10962 * its OK to resume normal operation. 10963 */ 10964 static void ixgbe_io_resume(struct pci_dev *pdev) 10965 { 10966 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 10967 struct net_device *netdev = adapter->netdev; 10968 10969 #ifdef CONFIG_PCI_IOV 10970 if (adapter->vferr_refcount) { 10971 e_info(drv, "Resuming after VF err\n"); 10972 adapter->vferr_refcount--; 10973 return; 10974 } 10975 10976 #endif 10977 rtnl_lock(); 10978 if (netif_running(netdev)) 10979 ixgbe_open(netdev); 10980 10981 netif_device_attach(netdev); 10982 rtnl_unlock(); 10983 } 10984 10985 static const struct pci_error_handlers ixgbe_err_handler = { 10986 .error_detected = ixgbe_io_error_detected, 10987 .slot_reset = ixgbe_io_slot_reset, 10988 .resume = ixgbe_io_resume, 10989 }; 10990 10991 static struct pci_driver ixgbe_driver = { 10992 .name = ixgbe_driver_name, 10993 .id_table = ixgbe_pci_tbl, 10994 .probe = ixgbe_probe, 10995 .remove = ixgbe_remove, 10996 #ifdef CONFIG_PM 10997 .suspend = ixgbe_suspend, 10998 .resume = ixgbe_resume, 10999 #endif 11000 .shutdown = ixgbe_shutdown, 11001 .sriov_configure = ixgbe_pci_sriov_configure, 11002 .err_handler = &ixgbe_err_handler 11003 }; 11004 11005 /** 11006 * ixgbe_init_module - Driver Registration Routine 11007 * 11008 * ixgbe_init_module is the first routine called when the driver is 11009 * loaded. All it does is register with the PCI subsystem. 11010 **/ 11011 static int __init ixgbe_init_module(void) 11012 { 11013 int ret; 11014 pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version); 11015 pr_info("%s\n", ixgbe_copyright); 11016 11017 ixgbe_wq = create_singlethread_workqueue(ixgbe_driver_name); 11018 if (!ixgbe_wq) { 11019 pr_err("%s: Failed to create workqueue\n", ixgbe_driver_name); 11020 return -ENOMEM; 11021 } 11022 11023 ixgbe_dbg_init(); 11024 11025 ret = pci_register_driver(&ixgbe_driver); 11026 if (ret) { 11027 destroy_workqueue(ixgbe_wq); 11028 ixgbe_dbg_exit(); 11029 return ret; 11030 } 11031 11032 #ifdef CONFIG_IXGBE_DCA 11033 dca_register_notify(&dca_notifier); 11034 #endif 11035 11036 return 0; 11037 } 11038 11039 module_init(ixgbe_init_module); 11040 11041 /** 11042 * ixgbe_exit_module - Driver Exit Cleanup Routine 11043 * 11044 * ixgbe_exit_module is called just before the driver is removed 11045 * from memory. 11046 **/ 11047 static void __exit ixgbe_exit_module(void) 11048 { 11049 #ifdef CONFIG_IXGBE_DCA 11050 dca_unregister_notify(&dca_notifier); 11051 #endif 11052 pci_unregister_driver(&ixgbe_driver); 11053 11054 ixgbe_dbg_exit(); 11055 if (ixgbe_wq) { 11056 destroy_workqueue(ixgbe_wq); 11057 ixgbe_wq = NULL; 11058 } 11059 } 11060 11061 #ifdef CONFIG_IXGBE_DCA 11062 static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event, 11063 void *p) 11064 { 11065 int ret_val; 11066 11067 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event, 11068 __ixgbe_notify_dca); 11069 11070 return ret_val ? NOTIFY_BAD : NOTIFY_DONE; 11071 } 11072 11073 #endif /* CONFIG_IXGBE_DCA */ 11074 11075 module_exit(ixgbe_exit_module); 11076 11077 /* ixgbe_main.c */ 11078