1 /* QLogic qede NIC Driver 2 * Copyright (c) 2015 QLogic Corporation 3 * 4 * This software is available under the terms of the GNU General Public License 5 * (GPL) Version 2, available from the file COPYING in the main directory of 6 * this source tree. 7 */ 8 9 #include <linux/module.h> 10 #include <linux/pci.h> 11 #include <linux/version.h> 12 #include <linux/device.h> 13 #include <linux/netdevice.h> 14 #include <linux/etherdevice.h> 15 #include <linux/skbuff.h> 16 #include <linux/errno.h> 17 #include <linux/list.h> 18 #include <linux/string.h> 19 #include <linux/dma-mapping.h> 20 #include <linux/interrupt.h> 21 #include <asm/byteorder.h> 22 #include <asm/param.h> 23 #include <linux/io.h> 24 #include <linux/netdev_features.h> 25 #include <linux/udp.h> 26 #include <linux/tcp.h> 27 #ifdef CONFIG_QEDE_VXLAN 28 #include <net/vxlan.h> 29 #endif 30 #ifdef CONFIG_QEDE_GENEVE 31 #include <net/geneve.h> 32 #endif 33 #include <linux/ip.h> 34 #include <net/ipv6.h> 35 #include <net/tcp.h> 36 #include <linux/if_ether.h> 37 #include <linux/if_vlan.h> 38 #include <linux/pkt_sched.h> 39 #include <linux/ethtool.h> 40 #include <linux/in.h> 41 #include <linux/random.h> 42 #include <net/ip6_checksum.h> 43 #include <linux/bitops.h> 44 45 #include "qede.h" 46 47 static char version[] = 48 "QLogic FastLinQ 4xxxx Ethernet Driver qede " DRV_MODULE_VERSION "\n"; 49 50 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx Ethernet Driver"); 51 MODULE_LICENSE("GPL"); 52 MODULE_VERSION(DRV_MODULE_VERSION); 53 54 static uint debug; 55 module_param(debug, uint, 0); 56 MODULE_PARM_DESC(debug, " Default debug msglevel"); 57 58 static const struct qed_eth_ops *qed_ops; 59 60 #define CHIP_NUM_57980S_40 0x1634 61 #define CHIP_NUM_57980S_10 0x1666 62 #define CHIP_NUM_57980S_MF 0x1636 63 #define CHIP_NUM_57980S_100 0x1644 64 #define CHIP_NUM_57980S_50 0x1654 65 #define CHIP_NUM_57980S_25 0x1656 66 #define CHIP_NUM_57980S_IOV 0x1664 67 68 #ifndef PCI_DEVICE_ID_NX2_57980E 69 #define PCI_DEVICE_ID_57980S_40 CHIP_NUM_57980S_40 70 #define PCI_DEVICE_ID_57980S_10 CHIP_NUM_57980S_10 71 #define PCI_DEVICE_ID_57980S_MF CHIP_NUM_57980S_MF 72 #define PCI_DEVICE_ID_57980S_100 CHIP_NUM_57980S_100 73 #define PCI_DEVICE_ID_57980S_50 CHIP_NUM_57980S_50 74 #define PCI_DEVICE_ID_57980S_25 CHIP_NUM_57980S_25 75 #define PCI_DEVICE_ID_57980S_IOV CHIP_NUM_57980S_IOV 76 #endif 77 78 enum qede_pci_private { 79 QEDE_PRIVATE_PF, 80 QEDE_PRIVATE_VF 81 }; 82 83 static const struct pci_device_id qede_pci_tbl[] = { 84 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_40), QEDE_PRIVATE_PF}, 85 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_10), QEDE_PRIVATE_PF}, 86 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_MF), QEDE_PRIVATE_PF}, 87 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_100), QEDE_PRIVATE_PF}, 88 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_50), QEDE_PRIVATE_PF}, 89 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_25), QEDE_PRIVATE_PF}, 90 #ifdef CONFIG_QED_SRIOV 91 {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_IOV), QEDE_PRIVATE_VF}, 92 #endif 93 { 0 } 94 }; 95 96 MODULE_DEVICE_TABLE(pci, qede_pci_tbl); 97 98 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id); 99 100 #define TX_TIMEOUT (5 * HZ) 101 102 static void qede_remove(struct pci_dev *pdev); 103 static int qede_alloc_rx_buffer(struct qede_dev *edev, 104 struct qede_rx_queue *rxq); 105 static void qede_link_update(void *dev, struct qed_link_output *link); 106 107 #ifdef CONFIG_QED_SRIOV 108 static int qede_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, u8 qos) 109 { 110 struct qede_dev *edev = netdev_priv(ndev); 111 112 if (vlan > 4095) { 113 DP_NOTICE(edev, "Illegal vlan value %d\n", vlan); 114 return -EINVAL; 115 } 116 117 DP_VERBOSE(edev, QED_MSG_IOV, "Setting Vlan 0x%04x to VF [%d]\n", 118 vlan, vf); 119 120 return edev->ops->iov->set_vlan(edev->cdev, vlan, vf); 121 } 122 123 static int qede_set_vf_mac(struct net_device *ndev, int vfidx, u8 *mac) 124 { 125 struct qede_dev *edev = netdev_priv(ndev); 126 127 DP_VERBOSE(edev, QED_MSG_IOV, 128 "Setting MAC %02x:%02x:%02x:%02x:%02x:%02x to VF [%d]\n", 129 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], vfidx); 130 131 if (!is_valid_ether_addr(mac)) { 132 DP_VERBOSE(edev, QED_MSG_IOV, "MAC address isn't valid\n"); 133 return -EINVAL; 134 } 135 136 return edev->ops->iov->set_mac(edev->cdev, mac, vfidx); 137 } 138 139 static int qede_sriov_configure(struct pci_dev *pdev, int num_vfs_param) 140 { 141 struct qede_dev *edev = netdev_priv(pci_get_drvdata(pdev)); 142 struct qed_dev_info *qed_info = &edev->dev_info.common; 143 int rc; 144 145 DP_VERBOSE(edev, QED_MSG_IOV, "Requested %d VFs\n", num_vfs_param); 146 147 rc = edev->ops->iov->configure(edev->cdev, num_vfs_param); 148 149 /* Enable/Disable Tx switching for PF */ 150 if ((rc == num_vfs_param) && netif_running(edev->ndev) && 151 qed_info->mf_mode != QED_MF_NPAR && qed_info->tx_switching) { 152 struct qed_update_vport_params params; 153 154 memset(¶ms, 0, sizeof(params)); 155 params.vport_id = 0; 156 params.update_tx_switching_flg = 1; 157 params.tx_switching_flg = num_vfs_param ? 1 : 0; 158 edev->ops->vport_update(edev->cdev, ¶ms); 159 } 160 161 return rc; 162 } 163 #endif 164 165 static struct pci_driver qede_pci_driver = { 166 .name = "qede", 167 .id_table = qede_pci_tbl, 168 .probe = qede_probe, 169 .remove = qede_remove, 170 #ifdef CONFIG_QED_SRIOV 171 .sriov_configure = qede_sriov_configure, 172 #endif 173 }; 174 175 static void qede_force_mac(void *dev, u8 *mac) 176 { 177 struct qede_dev *edev = dev; 178 179 ether_addr_copy(edev->ndev->dev_addr, mac); 180 ether_addr_copy(edev->primary_mac, mac); 181 } 182 183 static struct qed_eth_cb_ops qede_ll_ops = { 184 { 185 .link_update = qede_link_update, 186 }, 187 .force_mac = qede_force_mac, 188 }; 189 190 static int qede_netdev_event(struct notifier_block *this, unsigned long event, 191 void *ptr) 192 { 193 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 194 struct ethtool_drvinfo drvinfo; 195 struct qede_dev *edev; 196 197 /* Currently only support name change */ 198 if (event != NETDEV_CHANGENAME) 199 goto done; 200 201 /* Check whether this is a qede device */ 202 if (!ndev || !ndev->ethtool_ops || !ndev->ethtool_ops->get_drvinfo) 203 goto done; 204 205 memset(&drvinfo, 0, sizeof(drvinfo)); 206 ndev->ethtool_ops->get_drvinfo(ndev, &drvinfo); 207 if (strcmp(drvinfo.driver, "qede")) 208 goto done; 209 edev = netdev_priv(ndev); 210 211 /* Notify qed of the name change */ 212 if (!edev->ops || !edev->ops->common) 213 goto done; 214 edev->ops->common->set_id(edev->cdev, edev->ndev->name, 215 "qede"); 216 217 done: 218 return NOTIFY_DONE; 219 } 220 221 static struct notifier_block qede_netdev_notifier = { 222 .notifier_call = qede_netdev_event, 223 }; 224 225 static 226 int __init qede_init(void) 227 { 228 int ret; 229 230 pr_notice("qede_init: %s\n", version); 231 232 qed_ops = qed_get_eth_ops(); 233 if (!qed_ops) { 234 pr_notice("Failed to get qed ethtool operations\n"); 235 return -EINVAL; 236 } 237 238 /* Must register notifier before pci ops, since we might miss 239 * interface rename after pci probe and netdev registeration. 240 */ 241 ret = register_netdevice_notifier(&qede_netdev_notifier); 242 if (ret) { 243 pr_notice("Failed to register netdevice_notifier\n"); 244 qed_put_eth_ops(); 245 return -EINVAL; 246 } 247 248 ret = pci_register_driver(&qede_pci_driver); 249 if (ret) { 250 pr_notice("Failed to register driver\n"); 251 unregister_netdevice_notifier(&qede_netdev_notifier); 252 qed_put_eth_ops(); 253 return -EINVAL; 254 } 255 256 return 0; 257 } 258 259 static void __exit qede_cleanup(void) 260 { 261 pr_notice("qede_cleanup called\n"); 262 263 unregister_netdevice_notifier(&qede_netdev_notifier); 264 pci_unregister_driver(&qede_pci_driver); 265 qed_put_eth_ops(); 266 } 267 268 module_init(qede_init); 269 module_exit(qede_cleanup); 270 271 /* ------------------------------------------------------------------------- 272 * START OF FAST-PATH 273 * ------------------------------------------------------------------------- 274 */ 275 276 /* Unmap the data and free skb */ 277 static int qede_free_tx_pkt(struct qede_dev *edev, 278 struct qede_tx_queue *txq, 279 int *len) 280 { 281 u16 idx = txq->sw_tx_cons & NUM_TX_BDS_MAX; 282 struct sk_buff *skb = txq->sw_tx_ring[idx].skb; 283 struct eth_tx_1st_bd *first_bd; 284 struct eth_tx_bd *tx_data_bd; 285 int bds_consumed = 0; 286 int nbds; 287 bool data_split = txq->sw_tx_ring[idx].flags & QEDE_TSO_SPLIT_BD; 288 int i, split_bd_len = 0; 289 290 if (unlikely(!skb)) { 291 DP_ERR(edev, 292 "skb is null for txq idx=%d txq->sw_tx_cons=%d txq->sw_tx_prod=%d\n", 293 idx, txq->sw_tx_cons, txq->sw_tx_prod); 294 return -1; 295 } 296 297 *len = skb->len; 298 299 first_bd = (struct eth_tx_1st_bd *)qed_chain_consume(&txq->tx_pbl); 300 301 bds_consumed++; 302 303 nbds = first_bd->data.nbds; 304 305 if (data_split) { 306 struct eth_tx_bd *split = (struct eth_tx_bd *) 307 qed_chain_consume(&txq->tx_pbl); 308 split_bd_len = BD_UNMAP_LEN(split); 309 bds_consumed++; 310 } 311 dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd), 312 BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE); 313 314 /* Unmap the data of the skb frags */ 315 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++, bds_consumed++) { 316 tx_data_bd = (struct eth_tx_bd *) 317 qed_chain_consume(&txq->tx_pbl); 318 dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(tx_data_bd), 319 BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE); 320 } 321 322 while (bds_consumed++ < nbds) 323 qed_chain_consume(&txq->tx_pbl); 324 325 /* Free skb */ 326 dev_kfree_skb_any(skb); 327 txq->sw_tx_ring[idx].skb = NULL; 328 txq->sw_tx_ring[idx].flags = 0; 329 330 return 0; 331 } 332 333 /* Unmap the data and free skb when mapping failed during start_xmit */ 334 static void qede_free_failed_tx_pkt(struct qede_dev *edev, 335 struct qede_tx_queue *txq, 336 struct eth_tx_1st_bd *first_bd, 337 int nbd, 338 bool data_split) 339 { 340 u16 idx = txq->sw_tx_prod & NUM_TX_BDS_MAX; 341 struct sk_buff *skb = txq->sw_tx_ring[idx].skb; 342 struct eth_tx_bd *tx_data_bd; 343 int i, split_bd_len = 0; 344 345 /* Return prod to its position before this skb was handled */ 346 qed_chain_set_prod(&txq->tx_pbl, 347 le16_to_cpu(txq->tx_db.data.bd_prod), 348 first_bd); 349 350 first_bd = (struct eth_tx_1st_bd *)qed_chain_produce(&txq->tx_pbl); 351 352 if (data_split) { 353 struct eth_tx_bd *split = (struct eth_tx_bd *) 354 qed_chain_produce(&txq->tx_pbl); 355 split_bd_len = BD_UNMAP_LEN(split); 356 nbd--; 357 } 358 359 dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd), 360 BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE); 361 362 /* Unmap the data of the skb frags */ 363 for (i = 0; i < nbd; i++) { 364 tx_data_bd = (struct eth_tx_bd *) 365 qed_chain_produce(&txq->tx_pbl); 366 if (tx_data_bd->nbytes) 367 dma_unmap_page(&edev->pdev->dev, 368 BD_UNMAP_ADDR(tx_data_bd), 369 BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE); 370 } 371 372 /* Return again prod to its position before this skb was handled */ 373 qed_chain_set_prod(&txq->tx_pbl, 374 le16_to_cpu(txq->tx_db.data.bd_prod), 375 first_bd); 376 377 /* Free skb */ 378 dev_kfree_skb_any(skb); 379 txq->sw_tx_ring[idx].skb = NULL; 380 txq->sw_tx_ring[idx].flags = 0; 381 } 382 383 static u32 qede_xmit_type(struct qede_dev *edev, 384 struct sk_buff *skb, 385 int *ipv6_ext) 386 { 387 u32 rc = XMIT_L4_CSUM; 388 __be16 l3_proto; 389 390 if (skb->ip_summed != CHECKSUM_PARTIAL) 391 return XMIT_PLAIN; 392 393 l3_proto = vlan_get_protocol(skb); 394 if (l3_proto == htons(ETH_P_IPV6) && 395 (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) 396 *ipv6_ext = 1; 397 398 if (skb->encapsulation) 399 rc |= XMIT_ENC; 400 401 if (skb_is_gso(skb)) 402 rc |= XMIT_LSO; 403 404 return rc; 405 } 406 407 static void qede_set_params_for_ipv6_ext(struct sk_buff *skb, 408 struct eth_tx_2nd_bd *second_bd, 409 struct eth_tx_3rd_bd *third_bd) 410 { 411 u8 l4_proto; 412 u16 bd2_bits1 = 0, bd2_bits2 = 0; 413 414 bd2_bits1 |= (1 << ETH_TX_DATA_2ND_BD_IPV6_EXT_SHIFT); 415 416 bd2_bits2 |= ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) & 417 ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_MASK) 418 << ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_SHIFT; 419 420 bd2_bits1 |= (ETH_L4_PSEUDO_CSUM_CORRECT_LENGTH << 421 ETH_TX_DATA_2ND_BD_L4_PSEUDO_CSUM_MODE_SHIFT); 422 423 if (vlan_get_protocol(skb) == htons(ETH_P_IPV6)) 424 l4_proto = ipv6_hdr(skb)->nexthdr; 425 else 426 l4_proto = ip_hdr(skb)->protocol; 427 428 if (l4_proto == IPPROTO_UDP) 429 bd2_bits1 |= 1 << ETH_TX_DATA_2ND_BD_L4_UDP_SHIFT; 430 431 if (third_bd) 432 third_bd->data.bitfields |= 433 cpu_to_le16(((tcp_hdrlen(skb) / 4) & 434 ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_MASK) << 435 ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_SHIFT); 436 437 second_bd->data.bitfields1 = cpu_to_le16(bd2_bits1); 438 second_bd->data.bitfields2 = cpu_to_le16(bd2_bits2); 439 } 440 441 static int map_frag_to_bd(struct qede_dev *edev, 442 skb_frag_t *frag, 443 struct eth_tx_bd *bd) 444 { 445 dma_addr_t mapping; 446 447 /* Map skb non-linear frag data for DMA */ 448 mapping = skb_frag_dma_map(&edev->pdev->dev, frag, 0, 449 skb_frag_size(frag), 450 DMA_TO_DEVICE); 451 if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) { 452 DP_NOTICE(edev, "Unable to map frag - dropping packet\n"); 453 return -ENOMEM; 454 } 455 456 /* Setup the data pointer of the frag data */ 457 BD_SET_UNMAP_ADDR_LEN(bd, mapping, skb_frag_size(frag)); 458 459 return 0; 460 } 461 462 static u16 qede_get_skb_hlen(struct sk_buff *skb, bool is_encap_pkt) 463 { 464 if (is_encap_pkt) 465 return (skb_inner_transport_header(skb) + 466 inner_tcp_hdrlen(skb) - skb->data); 467 else 468 return (skb_transport_header(skb) + 469 tcp_hdrlen(skb) - skb->data); 470 } 471 472 /* +2 for 1st BD for headers and 2nd BD for headlen (if required) */ 473 #if ((MAX_SKB_FRAGS + 2) > ETH_TX_MAX_BDS_PER_NON_LSO_PACKET) 474 static bool qede_pkt_req_lin(struct qede_dev *edev, struct sk_buff *skb, 475 u8 xmit_type) 476 { 477 int allowed_frags = ETH_TX_MAX_BDS_PER_NON_LSO_PACKET - 1; 478 479 if (xmit_type & XMIT_LSO) { 480 int hlen; 481 482 hlen = qede_get_skb_hlen(skb, xmit_type & XMIT_ENC); 483 484 /* linear payload would require its own BD */ 485 if (skb_headlen(skb) > hlen) 486 allowed_frags--; 487 } 488 489 return (skb_shinfo(skb)->nr_frags > allowed_frags); 490 } 491 #endif 492 493 /* Main transmit function */ 494 static 495 netdev_tx_t qede_start_xmit(struct sk_buff *skb, 496 struct net_device *ndev) 497 { 498 struct qede_dev *edev = netdev_priv(ndev); 499 struct netdev_queue *netdev_txq; 500 struct qede_tx_queue *txq; 501 struct eth_tx_1st_bd *first_bd; 502 struct eth_tx_2nd_bd *second_bd = NULL; 503 struct eth_tx_3rd_bd *third_bd = NULL; 504 struct eth_tx_bd *tx_data_bd = NULL; 505 u16 txq_index; 506 u8 nbd = 0; 507 dma_addr_t mapping; 508 int rc, frag_idx = 0, ipv6_ext = 0; 509 u8 xmit_type; 510 u16 idx; 511 u16 hlen; 512 bool data_split = false; 513 514 /* Get tx-queue context and netdev index */ 515 txq_index = skb_get_queue_mapping(skb); 516 WARN_ON(txq_index >= QEDE_TSS_CNT(edev)); 517 txq = QEDE_TX_QUEUE(edev, txq_index); 518 netdev_txq = netdev_get_tx_queue(ndev, txq_index); 519 520 WARN_ON(qed_chain_get_elem_left(&txq->tx_pbl) < 521 (MAX_SKB_FRAGS + 1)); 522 523 xmit_type = qede_xmit_type(edev, skb, &ipv6_ext); 524 525 #if ((MAX_SKB_FRAGS + 2) > ETH_TX_MAX_BDS_PER_NON_LSO_PACKET) 526 if (qede_pkt_req_lin(edev, skb, xmit_type)) { 527 if (skb_linearize(skb)) { 528 DP_NOTICE(edev, 529 "SKB linearization failed - silently dropping this SKB\n"); 530 dev_kfree_skb_any(skb); 531 return NETDEV_TX_OK; 532 } 533 } 534 #endif 535 536 /* Fill the entry in the SW ring and the BDs in the FW ring */ 537 idx = txq->sw_tx_prod & NUM_TX_BDS_MAX; 538 txq->sw_tx_ring[idx].skb = skb; 539 first_bd = (struct eth_tx_1st_bd *) 540 qed_chain_produce(&txq->tx_pbl); 541 memset(first_bd, 0, sizeof(*first_bd)); 542 first_bd->data.bd_flags.bitfields = 543 1 << ETH_TX_1ST_BD_FLAGS_START_BD_SHIFT; 544 545 /* Map skb linear data for DMA and set in the first BD */ 546 mapping = dma_map_single(&edev->pdev->dev, skb->data, 547 skb_headlen(skb), DMA_TO_DEVICE); 548 if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) { 549 DP_NOTICE(edev, "SKB mapping failed\n"); 550 qede_free_failed_tx_pkt(edev, txq, first_bd, 0, false); 551 return NETDEV_TX_OK; 552 } 553 nbd++; 554 BD_SET_UNMAP_ADDR_LEN(first_bd, mapping, skb_headlen(skb)); 555 556 /* In case there is IPv6 with extension headers or LSO we need 2nd and 557 * 3rd BDs. 558 */ 559 if (unlikely((xmit_type & XMIT_LSO) | ipv6_ext)) { 560 second_bd = (struct eth_tx_2nd_bd *) 561 qed_chain_produce(&txq->tx_pbl); 562 memset(second_bd, 0, sizeof(*second_bd)); 563 564 nbd++; 565 third_bd = (struct eth_tx_3rd_bd *) 566 qed_chain_produce(&txq->tx_pbl); 567 memset(third_bd, 0, sizeof(*third_bd)); 568 569 nbd++; 570 /* We need to fill in additional data in second_bd... */ 571 tx_data_bd = (struct eth_tx_bd *)second_bd; 572 } 573 574 if (skb_vlan_tag_present(skb)) { 575 first_bd->data.vlan = cpu_to_le16(skb_vlan_tag_get(skb)); 576 first_bd->data.bd_flags.bitfields |= 577 1 << ETH_TX_1ST_BD_FLAGS_VLAN_INSERTION_SHIFT; 578 } 579 580 /* Fill the parsing flags & params according to the requested offload */ 581 if (xmit_type & XMIT_L4_CSUM) { 582 u16 temp = 1 << ETH_TX_DATA_1ST_BD_TUNN_CFG_OVERRIDE_SHIFT; 583 584 /* We don't re-calculate IP checksum as it is already done by 585 * the upper stack 586 */ 587 first_bd->data.bd_flags.bitfields |= 588 1 << ETH_TX_1ST_BD_FLAGS_L4_CSUM_SHIFT; 589 590 if (xmit_type & XMIT_ENC) { 591 first_bd->data.bd_flags.bitfields |= 592 1 << ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT; 593 } else { 594 /* In cases when OS doesn't indicate for inner offloads 595 * when packet is tunnelled, we need to override the HW 596 * tunnel configuration so that packets are treated as 597 * regular non tunnelled packets and no inner offloads 598 * are done by the hardware. 599 */ 600 first_bd->data.bitfields |= cpu_to_le16(temp); 601 } 602 603 /* If the packet is IPv6 with extension header, indicate that 604 * to FW and pass few params, since the device cracker doesn't 605 * support parsing IPv6 with extension header/s. 606 */ 607 if (unlikely(ipv6_ext)) 608 qede_set_params_for_ipv6_ext(skb, second_bd, third_bd); 609 } 610 611 if (xmit_type & XMIT_LSO) { 612 first_bd->data.bd_flags.bitfields |= 613 (1 << ETH_TX_1ST_BD_FLAGS_LSO_SHIFT); 614 third_bd->data.lso_mss = 615 cpu_to_le16(skb_shinfo(skb)->gso_size); 616 617 if (unlikely(xmit_type & XMIT_ENC)) { 618 first_bd->data.bd_flags.bitfields |= 619 1 << ETH_TX_1ST_BD_FLAGS_TUNN_IP_CSUM_SHIFT; 620 hlen = qede_get_skb_hlen(skb, true); 621 } else { 622 first_bd->data.bd_flags.bitfields |= 623 1 << ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT; 624 hlen = qede_get_skb_hlen(skb, false); 625 } 626 627 /* @@@TBD - if will not be removed need to check */ 628 third_bd->data.bitfields |= 629 cpu_to_le16((1 << ETH_TX_DATA_3RD_BD_HDR_NBD_SHIFT)); 630 631 /* Make life easier for FW guys who can't deal with header and 632 * data on same BD. If we need to split, use the second bd... 633 */ 634 if (unlikely(skb_headlen(skb) > hlen)) { 635 DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED, 636 "TSO split header size is %d (%x:%x)\n", 637 first_bd->nbytes, first_bd->addr.hi, 638 first_bd->addr.lo); 639 640 mapping = HILO_U64(le32_to_cpu(first_bd->addr.hi), 641 le32_to_cpu(first_bd->addr.lo)) + 642 hlen; 643 644 BD_SET_UNMAP_ADDR_LEN(tx_data_bd, mapping, 645 le16_to_cpu(first_bd->nbytes) - 646 hlen); 647 648 /* this marks the BD as one that has no 649 * individual mapping 650 */ 651 txq->sw_tx_ring[idx].flags |= QEDE_TSO_SPLIT_BD; 652 653 first_bd->nbytes = cpu_to_le16(hlen); 654 655 tx_data_bd = (struct eth_tx_bd *)third_bd; 656 data_split = true; 657 } 658 } 659 660 /* Handle fragmented skb */ 661 /* special handle for frags inside 2nd and 3rd bds.. */ 662 while (tx_data_bd && frag_idx < skb_shinfo(skb)->nr_frags) { 663 rc = map_frag_to_bd(edev, 664 &skb_shinfo(skb)->frags[frag_idx], 665 tx_data_bd); 666 if (rc) { 667 qede_free_failed_tx_pkt(edev, txq, first_bd, nbd, 668 data_split); 669 return NETDEV_TX_OK; 670 } 671 672 if (tx_data_bd == (struct eth_tx_bd *)second_bd) 673 tx_data_bd = (struct eth_tx_bd *)third_bd; 674 else 675 tx_data_bd = NULL; 676 677 frag_idx++; 678 } 679 680 /* map last frags into 4th, 5th .... */ 681 for (; frag_idx < skb_shinfo(skb)->nr_frags; frag_idx++, nbd++) { 682 tx_data_bd = (struct eth_tx_bd *) 683 qed_chain_produce(&txq->tx_pbl); 684 685 memset(tx_data_bd, 0, sizeof(*tx_data_bd)); 686 687 rc = map_frag_to_bd(edev, 688 &skb_shinfo(skb)->frags[frag_idx], 689 tx_data_bd); 690 if (rc) { 691 qede_free_failed_tx_pkt(edev, txq, first_bd, nbd, 692 data_split); 693 return NETDEV_TX_OK; 694 } 695 } 696 697 /* update the first BD with the actual num BDs */ 698 first_bd->data.nbds = nbd; 699 700 netdev_tx_sent_queue(netdev_txq, skb->len); 701 702 skb_tx_timestamp(skb); 703 704 /* Advance packet producer only before sending the packet since mapping 705 * of pages may fail. 706 */ 707 txq->sw_tx_prod++; 708 709 /* 'next page' entries are counted in the producer value */ 710 txq->tx_db.data.bd_prod = 711 cpu_to_le16(qed_chain_get_prod_idx(&txq->tx_pbl)); 712 713 /* wmb makes sure that the BDs data is updated before updating the 714 * producer, otherwise FW may read old data from the BDs. 715 */ 716 wmb(); 717 barrier(); 718 writel(txq->tx_db.raw, txq->doorbell_addr); 719 720 /* mmiowb is needed to synchronize doorbell writes from more than one 721 * processor. It guarantees that the write arrives to the device before 722 * the queue lock is released and another start_xmit is called (possibly 723 * on another CPU). Without this barrier, the next doorbell can bypass 724 * this doorbell. This is applicable to IA64/Altix systems. 725 */ 726 mmiowb(); 727 728 if (unlikely(qed_chain_get_elem_left(&txq->tx_pbl) 729 < (MAX_SKB_FRAGS + 1))) { 730 netif_tx_stop_queue(netdev_txq); 731 DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED, 732 "Stop queue was called\n"); 733 /* paired memory barrier is in qede_tx_int(), we have to keep 734 * ordering of set_bit() in netif_tx_stop_queue() and read of 735 * fp->bd_tx_cons 736 */ 737 smp_mb(); 738 739 if (qed_chain_get_elem_left(&txq->tx_pbl) 740 >= (MAX_SKB_FRAGS + 1) && 741 (edev->state == QEDE_STATE_OPEN)) { 742 netif_tx_wake_queue(netdev_txq); 743 DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED, 744 "Wake queue was called\n"); 745 } 746 } 747 748 return NETDEV_TX_OK; 749 } 750 751 int qede_txq_has_work(struct qede_tx_queue *txq) 752 { 753 u16 hw_bd_cons; 754 755 /* Tell compiler that consumer and producer can change */ 756 barrier(); 757 hw_bd_cons = le16_to_cpu(*txq->hw_cons_ptr); 758 if (qed_chain_get_cons_idx(&txq->tx_pbl) == hw_bd_cons + 1) 759 return 0; 760 761 return hw_bd_cons != qed_chain_get_cons_idx(&txq->tx_pbl); 762 } 763 764 static int qede_tx_int(struct qede_dev *edev, 765 struct qede_tx_queue *txq) 766 { 767 struct netdev_queue *netdev_txq; 768 u16 hw_bd_cons; 769 unsigned int pkts_compl = 0, bytes_compl = 0; 770 int rc; 771 772 netdev_txq = netdev_get_tx_queue(edev->ndev, txq->index); 773 774 hw_bd_cons = le16_to_cpu(*txq->hw_cons_ptr); 775 barrier(); 776 777 while (hw_bd_cons != qed_chain_get_cons_idx(&txq->tx_pbl)) { 778 int len = 0; 779 780 rc = qede_free_tx_pkt(edev, txq, &len); 781 if (rc) { 782 DP_NOTICE(edev, "hw_bd_cons = %d, chain_cons=%d\n", 783 hw_bd_cons, 784 qed_chain_get_cons_idx(&txq->tx_pbl)); 785 break; 786 } 787 788 bytes_compl += len; 789 pkts_compl++; 790 txq->sw_tx_cons++; 791 } 792 793 netdev_tx_completed_queue(netdev_txq, pkts_compl, bytes_compl); 794 795 /* Need to make the tx_bd_cons update visible to start_xmit() 796 * before checking for netif_tx_queue_stopped(). Without the 797 * memory barrier, there is a small possibility that 798 * start_xmit() will miss it and cause the queue to be stopped 799 * forever. 800 * On the other hand we need an rmb() here to ensure the proper 801 * ordering of bit testing in the following 802 * netif_tx_queue_stopped(txq) call. 803 */ 804 smp_mb(); 805 806 if (unlikely(netif_tx_queue_stopped(netdev_txq))) { 807 /* Taking tx_lock is needed to prevent reenabling the queue 808 * while it's empty. This could have happen if rx_action() gets 809 * suspended in qede_tx_int() after the condition before 810 * netif_tx_wake_queue(), while tx_action (qede_start_xmit()): 811 * 812 * stops the queue->sees fresh tx_bd_cons->releases the queue-> 813 * sends some packets consuming the whole queue again-> 814 * stops the queue 815 */ 816 817 __netif_tx_lock(netdev_txq, smp_processor_id()); 818 819 if ((netif_tx_queue_stopped(netdev_txq)) && 820 (edev->state == QEDE_STATE_OPEN) && 821 (qed_chain_get_elem_left(&txq->tx_pbl) 822 >= (MAX_SKB_FRAGS + 1))) { 823 netif_tx_wake_queue(netdev_txq); 824 DP_VERBOSE(edev, NETIF_MSG_TX_DONE, 825 "Wake queue was called\n"); 826 } 827 828 __netif_tx_unlock(netdev_txq); 829 } 830 831 return 0; 832 } 833 834 bool qede_has_rx_work(struct qede_rx_queue *rxq) 835 { 836 u16 hw_comp_cons, sw_comp_cons; 837 838 /* Tell compiler that status block fields can change */ 839 barrier(); 840 841 hw_comp_cons = le16_to_cpu(*rxq->hw_cons_ptr); 842 sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring); 843 844 return hw_comp_cons != sw_comp_cons; 845 } 846 847 static bool qede_has_tx_work(struct qede_fastpath *fp) 848 { 849 u8 tc; 850 851 for (tc = 0; tc < fp->edev->num_tc; tc++) 852 if (qede_txq_has_work(&fp->txqs[tc])) 853 return true; 854 return false; 855 } 856 857 static inline void qede_rx_bd_ring_consume(struct qede_rx_queue *rxq) 858 { 859 qed_chain_consume(&rxq->rx_bd_ring); 860 rxq->sw_rx_cons++; 861 } 862 863 /* This function reuses the buffer(from an offset) from 864 * consumer index to producer index in the bd ring 865 */ 866 static inline void qede_reuse_page(struct qede_dev *edev, 867 struct qede_rx_queue *rxq, 868 struct sw_rx_data *curr_cons) 869 { 870 struct eth_rx_bd *rx_bd_prod = qed_chain_produce(&rxq->rx_bd_ring); 871 struct sw_rx_data *curr_prod; 872 dma_addr_t new_mapping; 873 874 curr_prod = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX]; 875 *curr_prod = *curr_cons; 876 877 new_mapping = curr_prod->mapping + curr_prod->page_offset; 878 879 rx_bd_prod->addr.hi = cpu_to_le32(upper_32_bits(new_mapping)); 880 rx_bd_prod->addr.lo = cpu_to_le32(lower_32_bits(new_mapping)); 881 882 rxq->sw_rx_prod++; 883 curr_cons->data = NULL; 884 } 885 886 /* In case of allocation failures reuse buffers 887 * from consumer index to produce buffers for firmware 888 */ 889 void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq, 890 struct qede_dev *edev, u8 count) 891 { 892 struct sw_rx_data *curr_cons; 893 894 for (; count > 0; count--) { 895 curr_cons = &rxq->sw_rx_ring[rxq->sw_rx_cons & NUM_RX_BDS_MAX]; 896 qede_reuse_page(edev, rxq, curr_cons); 897 qede_rx_bd_ring_consume(rxq); 898 } 899 } 900 901 static inline int qede_realloc_rx_buffer(struct qede_dev *edev, 902 struct qede_rx_queue *rxq, 903 struct sw_rx_data *curr_cons) 904 { 905 /* Move to the next segment in the page */ 906 curr_cons->page_offset += rxq->rx_buf_seg_size; 907 908 if (curr_cons->page_offset == PAGE_SIZE) { 909 if (unlikely(qede_alloc_rx_buffer(edev, rxq))) { 910 /* Since we failed to allocate new buffer 911 * current buffer can be used again. 912 */ 913 curr_cons->page_offset -= rxq->rx_buf_seg_size; 914 915 return -ENOMEM; 916 } 917 918 dma_unmap_page(&edev->pdev->dev, curr_cons->mapping, 919 PAGE_SIZE, DMA_FROM_DEVICE); 920 } else { 921 /* Increment refcount of the page as we don't want 922 * network stack to take the ownership of the page 923 * which can be recycled multiple times by the driver. 924 */ 925 page_ref_inc(curr_cons->data); 926 qede_reuse_page(edev, rxq, curr_cons); 927 } 928 929 return 0; 930 } 931 932 static inline void qede_update_rx_prod(struct qede_dev *edev, 933 struct qede_rx_queue *rxq) 934 { 935 u16 bd_prod = qed_chain_get_prod_idx(&rxq->rx_bd_ring); 936 u16 cqe_prod = qed_chain_get_prod_idx(&rxq->rx_comp_ring); 937 struct eth_rx_prod_data rx_prods = {0}; 938 939 /* Update producers */ 940 rx_prods.bd_prod = cpu_to_le16(bd_prod); 941 rx_prods.cqe_prod = cpu_to_le16(cqe_prod); 942 943 /* Make sure that the BD and SGE data is updated before updating the 944 * producers since FW might read the BD/SGE right after the producer 945 * is updated. 946 */ 947 wmb(); 948 949 internal_ram_wr(rxq->hw_rxq_prod_addr, sizeof(rx_prods), 950 (u32 *)&rx_prods); 951 952 /* mmiowb is needed to synchronize doorbell writes from more than one 953 * processor. It guarantees that the write arrives to the device before 954 * the napi lock is released and another qede_poll is called (possibly 955 * on another CPU). Without this barrier, the next doorbell can bypass 956 * this doorbell. This is applicable to IA64/Altix systems. 957 */ 958 mmiowb(); 959 } 960 961 static u32 qede_get_rxhash(struct qede_dev *edev, 962 u8 bitfields, 963 __le32 rss_hash, 964 enum pkt_hash_types *rxhash_type) 965 { 966 enum rss_hash_type htype; 967 968 htype = GET_FIELD(bitfields, ETH_FAST_PATH_RX_REG_CQE_RSS_HASH_TYPE); 969 970 if ((edev->ndev->features & NETIF_F_RXHASH) && htype) { 971 *rxhash_type = ((htype == RSS_HASH_TYPE_IPV4) || 972 (htype == RSS_HASH_TYPE_IPV6)) ? 973 PKT_HASH_TYPE_L3 : PKT_HASH_TYPE_L4; 974 return le32_to_cpu(rss_hash); 975 } 976 *rxhash_type = PKT_HASH_TYPE_NONE; 977 return 0; 978 } 979 980 static void qede_set_skb_csum(struct sk_buff *skb, u8 csum_flag) 981 { 982 skb_checksum_none_assert(skb); 983 984 if (csum_flag & QEDE_CSUM_UNNECESSARY) 985 skb->ip_summed = CHECKSUM_UNNECESSARY; 986 987 if (csum_flag & QEDE_TUNN_CSUM_UNNECESSARY) 988 skb->csum_level = 1; 989 } 990 991 static inline void qede_skb_receive(struct qede_dev *edev, 992 struct qede_fastpath *fp, 993 struct sk_buff *skb, 994 u16 vlan_tag) 995 { 996 if (vlan_tag) 997 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), 998 vlan_tag); 999 1000 napi_gro_receive(&fp->napi, skb); 1001 } 1002 1003 static void qede_set_gro_params(struct qede_dev *edev, 1004 struct sk_buff *skb, 1005 struct eth_fast_path_rx_tpa_start_cqe *cqe) 1006 { 1007 u16 parsing_flags = le16_to_cpu(cqe->pars_flags.flags); 1008 1009 if (((parsing_flags >> PARSING_AND_ERR_FLAGS_L3TYPE_SHIFT) & 1010 PARSING_AND_ERR_FLAGS_L3TYPE_MASK) == 2) 1011 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; 1012 else 1013 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; 1014 1015 skb_shinfo(skb)->gso_size = __le16_to_cpu(cqe->len_on_first_bd) - 1016 cqe->header_len; 1017 } 1018 1019 static int qede_fill_frag_skb(struct qede_dev *edev, 1020 struct qede_rx_queue *rxq, 1021 u8 tpa_agg_index, 1022 u16 len_on_bd) 1023 { 1024 struct sw_rx_data *current_bd = &rxq->sw_rx_ring[rxq->sw_rx_cons & 1025 NUM_RX_BDS_MAX]; 1026 struct qede_agg_info *tpa_info = &rxq->tpa_info[tpa_agg_index]; 1027 struct sk_buff *skb = tpa_info->skb; 1028 1029 if (unlikely(tpa_info->agg_state != QEDE_AGG_STATE_START)) 1030 goto out; 1031 1032 /* Add one frag and update the appropriate fields in the skb */ 1033 skb_fill_page_desc(skb, tpa_info->frag_id++, 1034 current_bd->data, current_bd->page_offset, 1035 len_on_bd); 1036 1037 if (unlikely(qede_realloc_rx_buffer(edev, rxq, current_bd))) { 1038 /* Incr page ref count to reuse on allocation failure 1039 * so that it doesn't get freed while freeing SKB. 1040 */ 1041 page_ref_inc(current_bd->data); 1042 goto out; 1043 } 1044 1045 qed_chain_consume(&rxq->rx_bd_ring); 1046 rxq->sw_rx_cons++; 1047 1048 skb->data_len += len_on_bd; 1049 skb->truesize += rxq->rx_buf_seg_size; 1050 skb->len += len_on_bd; 1051 1052 return 0; 1053 1054 out: 1055 tpa_info->agg_state = QEDE_AGG_STATE_ERROR; 1056 qede_recycle_rx_bd_ring(rxq, edev, 1); 1057 return -ENOMEM; 1058 } 1059 1060 static void qede_tpa_start(struct qede_dev *edev, 1061 struct qede_rx_queue *rxq, 1062 struct eth_fast_path_rx_tpa_start_cqe *cqe) 1063 { 1064 struct qede_agg_info *tpa_info = &rxq->tpa_info[cqe->tpa_agg_index]; 1065 struct eth_rx_bd *rx_bd_cons = qed_chain_consume(&rxq->rx_bd_ring); 1066 struct eth_rx_bd *rx_bd_prod = qed_chain_produce(&rxq->rx_bd_ring); 1067 struct sw_rx_data *replace_buf = &tpa_info->replace_buf; 1068 dma_addr_t mapping = tpa_info->replace_buf_mapping; 1069 struct sw_rx_data *sw_rx_data_cons; 1070 struct sw_rx_data *sw_rx_data_prod; 1071 enum pkt_hash_types rxhash_type; 1072 u32 rxhash; 1073 1074 sw_rx_data_cons = &rxq->sw_rx_ring[rxq->sw_rx_cons & NUM_RX_BDS_MAX]; 1075 sw_rx_data_prod = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX]; 1076 1077 /* Use pre-allocated replacement buffer - we can't release the agg. 1078 * start until its over and we don't want to risk allocation failing 1079 * here, so re-allocate when aggregation will be over. 1080 */ 1081 sw_rx_data_prod->mapping = replace_buf->mapping; 1082 1083 sw_rx_data_prod->data = replace_buf->data; 1084 rx_bd_prod->addr.hi = cpu_to_le32(upper_32_bits(mapping)); 1085 rx_bd_prod->addr.lo = cpu_to_le32(lower_32_bits(mapping)); 1086 sw_rx_data_prod->page_offset = replace_buf->page_offset; 1087 1088 rxq->sw_rx_prod++; 1089 1090 /* move partial skb from cons to pool (don't unmap yet) 1091 * save mapping, incase we drop the packet later on. 1092 */ 1093 tpa_info->start_buf = *sw_rx_data_cons; 1094 mapping = HILO_U64(le32_to_cpu(rx_bd_cons->addr.hi), 1095 le32_to_cpu(rx_bd_cons->addr.lo)); 1096 1097 tpa_info->start_buf_mapping = mapping; 1098 rxq->sw_rx_cons++; 1099 1100 /* set tpa state to start only if we are able to allocate skb 1101 * for this aggregation, otherwise mark as error and aggregation will 1102 * be dropped 1103 */ 1104 tpa_info->skb = netdev_alloc_skb(edev->ndev, 1105 le16_to_cpu(cqe->len_on_first_bd)); 1106 if (unlikely(!tpa_info->skb)) { 1107 DP_NOTICE(edev, "Failed to allocate SKB for gro\n"); 1108 tpa_info->agg_state = QEDE_AGG_STATE_ERROR; 1109 goto cons_buf; 1110 } 1111 1112 skb_put(tpa_info->skb, le16_to_cpu(cqe->len_on_first_bd)); 1113 memcpy(&tpa_info->start_cqe, cqe, sizeof(tpa_info->start_cqe)); 1114 1115 /* Start filling in the aggregation info */ 1116 tpa_info->frag_id = 0; 1117 tpa_info->agg_state = QEDE_AGG_STATE_START; 1118 1119 rxhash = qede_get_rxhash(edev, cqe->bitfields, 1120 cqe->rss_hash, &rxhash_type); 1121 skb_set_hash(tpa_info->skb, rxhash, rxhash_type); 1122 if ((le16_to_cpu(cqe->pars_flags.flags) >> 1123 PARSING_AND_ERR_FLAGS_TAG8021QEXIST_SHIFT) & 1124 PARSING_AND_ERR_FLAGS_TAG8021QEXIST_MASK) 1125 tpa_info->vlan_tag = le16_to_cpu(cqe->vlan_tag); 1126 else 1127 tpa_info->vlan_tag = 0; 1128 1129 /* This is needed in order to enable forwarding support */ 1130 qede_set_gro_params(edev, tpa_info->skb, cqe); 1131 1132 cons_buf: /* We still need to handle bd_len_list to consume buffers */ 1133 if (likely(cqe->ext_bd_len_list[0])) 1134 qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index, 1135 le16_to_cpu(cqe->ext_bd_len_list[0])); 1136 1137 if (unlikely(cqe->ext_bd_len_list[1])) { 1138 DP_ERR(edev, 1139 "Unlikely - got a TPA aggregation with more than one ext_bd_len_list entry in the TPA start\n"); 1140 tpa_info->agg_state = QEDE_AGG_STATE_ERROR; 1141 } 1142 } 1143 1144 #ifdef CONFIG_INET 1145 static void qede_gro_ip_csum(struct sk_buff *skb) 1146 { 1147 const struct iphdr *iph = ip_hdr(skb); 1148 struct tcphdr *th; 1149 1150 skb_set_transport_header(skb, sizeof(struct iphdr)); 1151 th = tcp_hdr(skb); 1152 1153 th->check = ~tcp_v4_check(skb->len - skb_transport_offset(skb), 1154 iph->saddr, iph->daddr, 0); 1155 1156 tcp_gro_complete(skb); 1157 } 1158 1159 static void qede_gro_ipv6_csum(struct sk_buff *skb) 1160 { 1161 struct ipv6hdr *iph = ipv6_hdr(skb); 1162 struct tcphdr *th; 1163 1164 skb_set_transport_header(skb, sizeof(struct ipv6hdr)); 1165 th = tcp_hdr(skb); 1166 1167 th->check = ~tcp_v6_check(skb->len - skb_transport_offset(skb), 1168 &iph->saddr, &iph->daddr, 0); 1169 tcp_gro_complete(skb); 1170 } 1171 #endif 1172 1173 static void qede_gro_receive(struct qede_dev *edev, 1174 struct qede_fastpath *fp, 1175 struct sk_buff *skb, 1176 u16 vlan_tag) 1177 { 1178 /* FW can send a single MTU sized packet from gro flow 1179 * due to aggregation timeout/last segment etc. which 1180 * is not expected to be a gro packet. If a skb has zero 1181 * frags then simply push it in the stack as non gso skb. 1182 */ 1183 if (unlikely(!skb->data_len)) { 1184 skb_shinfo(skb)->gso_type = 0; 1185 skb_shinfo(skb)->gso_size = 0; 1186 goto send_skb; 1187 } 1188 1189 #ifdef CONFIG_INET 1190 if (skb_shinfo(skb)->gso_size) { 1191 skb_set_network_header(skb, 0); 1192 1193 switch (skb->protocol) { 1194 case htons(ETH_P_IP): 1195 qede_gro_ip_csum(skb); 1196 break; 1197 case htons(ETH_P_IPV6): 1198 qede_gro_ipv6_csum(skb); 1199 break; 1200 default: 1201 DP_ERR(edev, 1202 "Error: FW GRO supports only IPv4/IPv6, not 0x%04x\n", 1203 ntohs(skb->protocol)); 1204 } 1205 } 1206 #endif 1207 1208 send_skb: 1209 skb_record_rx_queue(skb, fp->rss_id); 1210 qede_skb_receive(edev, fp, skb, vlan_tag); 1211 } 1212 1213 static inline void qede_tpa_cont(struct qede_dev *edev, 1214 struct qede_rx_queue *rxq, 1215 struct eth_fast_path_rx_tpa_cont_cqe *cqe) 1216 { 1217 int i; 1218 1219 for (i = 0; cqe->len_list[i]; i++) 1220 qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index, 1221 le16_to_cpu(cqe->len_list[i])); 1222 1223 if (unlikely(i > 1)) 1224 DP_ERR(edev, 1225 "Strange - TPA cont with more than a single len_list entry\n"); 1226 } 1227 1228 static void qede_tpa_end(struct qede_dev *edev, 1229 struct qede_fastpath *fp, 1230 struct eth_fast_path_rx_tpa_end_cqe *cqe) 1231 { 1232 struct qede_rx_queue *rxq = fp->rxq; 1233 struct qede_agg_info *tpa_info; 1234 struct sk_buff *skb; 1235 int i; 1236 1237 tpa_info = &rxq->tpa_info[cqe->tpa_agg_index]; 1238 skb = tpa_info->skb; 1239 1240 for (i = 0; cqe->len_list[i]; i++) 1241 qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index, 1242 le16_to_cpu(cqe->len_list[i])); 1243 if (unlikely(i > 1)) 1244 DP_ERR(edev, 1245 "Strange - TPA emd with more than a single len_list entry\n"); 1246 1247 if (unlikely(tpa_info->agg_state != QEDE_AGG_STATE_START)) 1248 goto err; 1249 1250 /* Sanity */ 1251 if (unlikely(cqe->num_of_bds != tpa_info->frag_id + 1)) 1252 DP_ERR(edev, 1253 "Strange - TPA had %02x BDs, but SKB has only %d frags\n", 1254 cqe->num_of_bds, tpa_info->frag_id); 1255 if (unlikely(skb->len != le16_to_cpu(cqe->total_packet_len))) 1256 DP_ERR(edev, 1257 "Strange - total packet len [cqe] is %4x but SKB has len %04x\n", 1258 le16_to_cpu(cqe->total_packet_len), skb->len); 1259 1260 memcpy(skb->data, 1261 page_address(tpa_info->start_buf.data) + 1262 tpa_info->start_cqe.placement_offset + 1263 tpa_info->start_buf.page_offset, 1264 le16_to_cpu(tpa_info->start_cqe.len_on_first_bd)); 1265 1266 /* Recycle [mapped] start buffer for the next replacement */ 1267 tpa_info->replace_buf = tpa_info->start_buf; 1268 tpa_info->replace_buf_mapping = tpa_info->start_buf_mapping; 1269 1270 /* Finalize the SKB */ 1271 skb->protocol = eth_type_trans(skb, edev->ndev); 1272 skb->ip_summed = CHECKSUM_UNNECESSARY; 1273 1274 /* tcp_gro_complete() will copy NAPI_GRO_CB(skb)->count 1275 * to skb_shinfo(skb)->gso_segs 1276 */ 1277 NAPI_GRO_CB(skb)->count = le16_to_cpu(cqe->num_of_coalesced_segs); 1278 1279 qede_gro_receive(edev, fp, skb, tpa_info->vlan_tag); 1280 1281 tpa_info->agg_state = QEDE_AGG_STATE_NONE; 1282 1283 return; 1284 err: 1285 /* The BD starting the aggregation is still mapped; Re-use it for 1286 * future aggregations [as replacement buffer] 1287 */ 1288 memcpy(&tpa_info->replace_buf, &tpa_info->start_buf, 1289 sizeof(struct sw_rx_data)); 1290 tpa_info->replace_buf_mapping = tpa_info->start_buf_mapping; 1291 tpa_info->start_buf.data = NULL; 1292 tpa_info->agg_state = QEDE_AGG_STATE_NONE; 1293 dev_kfree_skb_any(tpa_info->skb); 1294 tpa_info->skb = NULL; 1295 } 1296 1297 static bool qede_tunn_exist(u16 flag) 1298 { 1299 return !!(flag & (PARSING_AND_ERR_FLAGS_TUNNELEXIST_MASK << 1300 PARSING_AND_ERR_FLAGS_TUNNELEXIST_SHIFT)); 1301 } 1302 1303 static u8 qede_check_tunn_csum(u16 flag) 1304 { 1305 u16 csum_flag = 0; 1306 u8 tcsum = 0; 1307 1308 if (flag & (PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMWASCALCULATED_MASK << 1309 PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMWASCALCULATED_SHIFT)) 1310 csum_flag |= PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMERROR_MASK << 1311 PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMERROR_SHIFT; 1312 1313 if (flag & (PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_MASK << 1314 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_SHIFT)) { 1315 csum_flag |= PARSING_AND_ERR_FLAGS_L4CHKSMERROR_MASK << 1316 PARSING_AND_ERR_FLAGS_L4CHKSMERROR_SHIFT; 1317 tcsum = QEDE_TUNN_CSUM_UNNECESSARY; 1318 } 1319 1320 csum_flag |= PARSING_AND_ERR_FLAGS_TUNNELIPHDRERROR_MASK << 1321 PARSING_AND_ERR_FLAGS_TUNNELIPHDRERROR_SHIFT | 1322 PARSING_AND_ERR_FLAGS_IPHDRERROR_MASK << 1323 PARSING_AND_ERR_FLAGS_IPHDRERROR_SHIFT; 1324 1325 if (csum_flag & flag) 1326 return QEDE_CSUM_ERROR; 1327 1328 return QEDE_CSUM_UNNECESSARY | tcsum; 1329 } 1330 1331 static u8 qede_check_notunn_csum(u16 flag) 1332 { 1333 u16 csum_flag = 0; 1334 u8 csum = 0; 1335 1336 if (flag & (PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_MASK << 1337 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_SHIFT)) { 1338 csum_flag |= PARSING_AND_ERR_FLAGS_L4CHKSMERROR_MASK << 1339 PARSING_AND_ERR_FLAGS_L4CHKSMERROR_SHIFT; 1340 csum = QEDE_CSUM_UNNECESSARY; 1341 } 1342 1343 csum_flag |= PARSING_AND_ERR_FLAGS_IPHDRERROR_MASK << 1344 PARSING_AND_ERR_FLAGS_IPHDRERROR_SHIFT; 1345 1346 if (csum_flag & flag) 1347 return QEDE_CSUM_ERROR; 1348 1349 return csum; 1350 } 1351 1352 static u8 qede_check_csum(u16 flag) 1353 { 1354 if (!qede_tunn_exist(flag)) 1355 return qede_check_notunn_csum(flag); 1356 else 1357 return qede_check_tunn_csum(flag); 1358 } 1359 1360 static int qede_rx_int(struct qede_fastpath *fp, int budget) 1361 { 1362 struct qede_dev *edev = fp->edev; 1363 struct qede_rx_queue *rxq = fp->rxq; 1364 1365 u16 hw_comp_cons, sw_comp_cons, sw_rx_index, parse_flag; 1366 int rx_pkt = 0; 1367 u8 csum_flag; 1368 1369 hw_comp_cons = le16_to_cpu(*rxq->hw_cons_ptr); 1370 sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring); 1371 1372 /* Memory barrier to prevent the CPU from doing speculative reads of CQE 1373 * / BD in the while-loop before reading hw_comp_cons. If the CQE is 1374 * read before it is written by FW, then FW writes CQE and SB, and then 1375 * the CPU reads the hw_comp_cons, it will use an old CQE. 1376 */ 1377 rmb(); 1378 1379 /* Loop to complete all indicated BDs */ 1380 while (sw_comp_cons != hw_comp_cons) { 1381 struct eth_fast_path_rx_reg_cqe *fp_cqe; 1382 enum pkt_hash_types rxhash_type; 1383 enum eth_rx_cqe_type cqe_type; 1384 struct sw_rx_data *sw_rx_data; 1385 union eth_rx_cqe *cqe; 1386 struct sk_buff *skb; 1387 struct page *data; 1388 __le16 flags; 1389 u16 len, pad; 1390 u32 rx_hash; 1391 1392 /* Get the CQE from the completion ring */ 1393 cqe = (union eth_rx_cqe *) 1394 qed_chain_consume(&rxq->rx_comp_ring); 1395 cqe_type = cqe->fast_path_regular.type; 1396 1397 if (unlikely(cqe_type == ETH_RX_CQE_TYPE_SLOW_PATH)) { 1398 edev->ops->eth_cqe_completion( 1399 edev->cdev, fp->rss_id, 1400 (struct eth_slow_path_rx_cqe *)cqe); 1401 goto next_cqe; 1402 } 1403 1404 if (cqe_type != ETH_RX_CQE_TYPE_REGULAR) { 1405 switch (cqe_type) { 1406 case ETH_RX_CQE_TYPE_TPA_START: 1407 qede_tpa_start(edev, rxq, 1408 &cqe->fast_path_tpa_start); 1409 goto next_cqe; 1410 case ETH_RX_CQE_TYPE_TPA_CONT: 1411 qede_tpa_cont(edev, rxq, 1412 &cqe->fast_path_tpa_cont); 1413 goto next_cqe; 1414 case ETH_RX_CQE_TYPE_TPA_END: 1415 qede_tpa_end(edev, fp, 1416 &cqe->fast_path_tpa_end); 1417 goto next_rx_only; 1418 default: 1419 break; 1420 } 1421 } 1422 1423 /* Get the data from the SW ring */ 1424 sw_rx_index = rxq->sw_rx_cons & NUM_RX_BDS_MAX; 1425 sw_rx_data = &rxq->sw_rx_ring[sw_rx_index]; 1426 data = sw_rx_data->data; 1427 1428 fp_cqe = &cqe->fast_path_regular; 1429 len = le16_to_cpu(fp_cqe->len_on_first_bd); 1430 pad = fp_cqe->placement_offset; 1431 flags = cqe->fast_path_regular.pars_flags.flags; 1432 1433 /* If this is an error packet then drop it */ 1434 parse_flag = le16_to_cpu(flags); 1435 1436 csum_flag = qede_check_csum(parse_flag); 1437 if (unlikely(csum_flag == QEDE_CSUM_ERROR)) { 1438 DP_NOTICE(edev, 1439 "CQE in CONS = %u has error, flags = %x, dropping incoming packet\n", 1440 sw_comp_cons, parse_flag); 1441 rxq->rx_hw_errors++; 1442 qede_recycle_rx_bd_ring(rxq, edev, fp_cqe->bd_num); 1443 goto next_cqe; 1444 } 1445 1446 skb = netdev_alloc_skb(edev->ndev, QEDE_RX_HDR_SIZE); 1447 if (unlikely(!skb)) { 1448 DP_NOTICE(edev, 1449 "Build_skb failed, dropping incoming packet\n"); 1450 qede_recycle_rx_bd_ring(rxq, edev, fp_cqe->bd_num); 1451 rxq->rx_alloc_errors++; 1452 goto next_cqe; 1453 } 1454 1455 /* Copy data into SKB */ 1456 if (len + pad <= QEDE_RX_HDR_SIZE) { 1457 memcpy(skb_put(skb, len), 1458 page_address(data) + pad + 1459 sw_rx_data->page_offset, len); 1460 qede_reuse_page(edev, rxq, sw_rx_data); 1461 } else { 1462 struct skb_frag_struct *frag; 1463 unsigned int pull_len; 1464 unsigned char *va; 1465 1466 frag = &skb_shinfo(skb)->frags[0]; 1467 1468 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, data, 1469 pad + sw_rx_data->page_offset, 1470 len, rxq->rx_buf_seg_size); 1471 1472 va = skb_frag_address(frag); 1473 pull_len = eth_get_headlen(va, QEDE_RX_HDR_SIZE); 1474 1475 /* Align the pull_len to optimize memcpy */ 1476 memcpy(skb->data, va, ALIGN(pull_len, sizeof(long))); 1477 1478 skb_frag_size_sub(frag, pull_len); 1479 frag->page_offset += pull_len; 1480 skb->data_len -= pull_len; 1481 skb->tail += pull_len; 1482 1483 if (unlikely(qede_realloc_rx_buffer(edev, rxq, 1484 sw_rx_data))) { 1485 DP_ERR(edev, "Failed to allocate rx buffer\n"); 1486 /* Incr page ref count to reuse on allocation 1487 * failure so that it doesn't get freed while 1488 * freeing SKB. 1489 */ 1490 1491 page_ref_inc(sw_rx_data->data); 1492 rxq->rx_alloc_errors++; 1493 qede_recycle_rx_bd_ring(rxq, edev, 1494 fp_cqe->bd_num); 1495 dev_kfree_skb_any(skb); 1496 goto next_cqe; 1497 } 1498 } 1499 1500 qede_rx_bd_ring_consume(rxq); 1501 1502 if (fp_cqe->bd_num != 1) { 1503 u16 pkt_len = le16_to_cpu(fp_cqe->pkt_len); 1504 u8 num_frags; 1505 1506 pkt_len -= len; 1507 1508 for (num_frags = fp_cqe->bd_num - 1; num_frags > 0; 1509 num_frags--) { 1510 u16 cur_size = pkt_len > rxq->rx_buf_size ? 1511 rxq->rx_buf_size : pkt_len; 1512 if (unlikely(!cur_size)) { 1513 DP_ERR(edev, 1514 "Still got %d BDs for mapping jumbo, but length became 0\n", 1515 num_frags); 1516 qede_recycle_rx_bd_ring(rxq, edev, 1517 num_frags); 1518 dev_kfree_skb_any(skb); 1519 goto next_cqe; 1520 } 1521 1522 if (unlikely(qede_alloc_rx_buffer(edev, rxq))) { 1523 qede_recycle_rx_bd_ring(rxq, edev, 1524 num_frags); 1525 dev_kfree_skb_any(skb); 1526 goto next_cqe; 1527 } 1528 1529 sw_rx_index = rxq->sw_rx_cons & NUM_RX_BDS_MAX; 1530 sw_rx_data = &rxq->sw_rx_ring[sw_rx_index]; 1531 qede_rx_bd_ring_consume(rxq); 1532 1533 dma_unmap_page(&edev->pdev->dev, 1534 sw_rx_data->mapping, 1535 PAGE_SIZE, DMA_FROM_DEVICE); 1536 1537 skb_fill_page_desc(skb, 1538 skb_shinfo(skb)->nr_frags++, 1539 sw_rx_data->data, 0, 1540 cur_size); 1541 1542 skb->truesize += PAGE_SIZE; 1543 skb->data_len += cur_size; 1544 skb->len += cur_size; 1545 pkt_len -= cur_size; 1546 } 1547 1548 if (unlikely(pkt_len)) 1549 DP_ERR(edev, 1550 "Mapped all BDs of jumbo, but still have %d bytes\n", 1551 pkt_len); 1552 } 1553 1554 skb->protocol = eth_type_trans(skb, edev->ndev); 1555 1556 rx_hash = qede_get_rxhash(edev, fp_cqe->bitfields, 1557 fp_cqe->rss_hash, 1558 &rxhash_type); 1559 1560 skb_set_hash(skb, rx_hash, rxhash_type); 1561 1562 qede_set_skb_csum(skb, csum_flag); 1563 1564 skb_record_rx_queue(skb, fp->rss_id); 1565 1566 qede_skb_receive(edev, fp, skb, le16_to_cpu(fp_cqe->vlan_tag)); 1567 next_rx_only: 1568 rx_pkt++; 1569 1570 next_cqe: /* don't consume bd rx buffer */ 1571 qed_chain_recycle_consumed(&rxq->rx_comp_ring); 1572 sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring); 1573 /* CR TPA - revisit how to handle budget in TPA perhaps 1574 * increase on "end" 1575 */ 1576 if (rx_pkt == budget) 1577 break; 1578 } /* repeat while sw_comp_cons != hw_comp_cons... */ 1579 1580 /* Update producers */ 1581 qede_update_rx_prod(edev, rxq); 1582 1583 return rx_pkt; 1584 } 1585 1586 static int qede_poll(struct napi_struct *napi, int budget) 1587 { 1588 int work_done = 0; 1589 struct qede_fastpath *fp = container_of(napi, struct qede_fastpath, 1590 napi); 1591 struct qede_dev *edev = fp->edev; 1592 1593 while (1) { 1594 u8 tc; 1595 1596 for (tc = 0; tc < edev->num_tc; tc++) 1597 if (qede_txq_has_work(&fp->txqs[tc])) 1598 qede_tx_int(edev, &fp->txqs[tc]); 1599 1600 if (qede_has_rx_work(fp->rxq)) { 1601 work_done += qede_rx_int(fp, budget - work_done); 1602 1603 /* must not complete if we consumed full budget */ 1604 if (work_done >= budget) 1605 break; 1606 } 1607 1608 /* Fall out from the NAPI loop if needed */ 1609 if (!(qede_has_rx_work(fp->rxq) || qede_has_tx_work(fp))) { 1610 qed_sb_update_sb_idx(fp->sb_info); 1611 /* *_has_*_work() reads the status block, 1612 * thus we need to ensure that status block indices 1613 * have been actually read (qed_sb_update_sb_idx) 1614 * prior to this check (*_has_*_work) so that 1615 * we won't write the "newer" value of the status block 1616 * to HW (if there was a DMA right after 1617 * qede_has_rx_work and if there is no rmb, the memory 1618 * reading (qed_sb_update_sb_idx) may be postponed 1619 * to right before *_ack_sb). In this case there 1620 * will never be another interrupt until there is 1621 * another update of the status block, while there 1622 * is still unhandled work. 1623 */ 1624 rmb(); 1625 1626 if (!(qede_has_rx_work(fp->rxq) || 1627 qede_has_tx_work(fp))) { 1628 napi_complete(napi); 1629 /* Update and reenable interrupts */ 1630 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1631 1 /*update*/); 1632 break; 1633 } 1634 } 1635 } 1636 1637 return work_done; 1638 } 1639 1640 static irqreturn_t qede_msix_fp_int(int irq, void *fp_cookie) 1641 { 1642 struct qede_fastpath *fp = fp_cookie; 1643 1644 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 1645 1646 napi_schedule_irqoff(&fp->napi); 1647 return IRQ_HANDLED; 1648 } 1649 1650 /* ------------------------------------------------------------------------- 1651 * END OF FAST-PATH 1652 * ------------------------------------------------------------------------- 1653 */ 1654 1655 static int qede_open(struct net_device *ndev); 1656 static int qede_close(struct net_device *ndev); 1657 static int qede_set_mac_addr(struct net_device *ndev, void *p); 1658 static void qede_set_rx_mode(struct net_device *ndev); 1659 static void qede_config_rx_mode(struct net_device *ndev); 1660 1661 static int qede_set_ucast_rx_mac(struct qede_dev *edev, 1662 enum qed_filter_xcast_params_type opcode, 1663 unsigned char mac[ETH_ALEN]) 1664 { 1665 struct qed_filter_params filter_cmd; 1666 1667 memset(&filter_cmd, 0, sizeof(filter_cmd)); 1668 filter_cmd.type = QED_FILTER_TYPE_UCAST; 1669 filter_cmd.filter.ucast.type = opcode; 1670 filter_cmd.filter.ucast.mac_valid = 1; 1671 ether_addr_copy(filter_cmd.filter.ucast.mac, mac); 1672 1673 return edev->ops->filter_config(edev->cdev, &filter_cmd); 1674 } 1675 1676 static int qede_set_ucast_rx_vlan(struct qede_dev *edev, 1677 enum qed_filter_xcast_params_type opcode, 1678 u16 vid) 1679 { 1680 struct qed_filter_params filter_cmd; 1681 1682 memset(&filter_cmd, 0, sizeof(filter_cmd)); 1683 filter_cmd.type = QED_FILTER_TYPE_UCAST; 1684 filter_cmd.filter.ucast.type = opcode; 1685 filter_cmd.filter.ucast.vlan_valid = 1; 1686 filter_cmd.filter.ucast.vlan = vid; 1687 1688 return edev->ops->filter_config(edev->cdev, &filter_cmd); 1689 } 1690 1691 void qede_fill_by_demand_stats(struct qede_dev *edev) 1692 { 1693 struct qed_eth_stats stats; 1694 1695 edev->ops->get_vport_stats(edev->cdev, &stats); 1696 edev->stats.no_buff_discards = stats.no_buff_discards; 1697 edev->stats.rx_ucast_bytes = stats.rx_ucast_bytes; 1698 edev->stats.rx_mcast_bytes = stats.rx_mcast_bytes; 1699 edev->stats.rx_bcast_bytes = stats.rx_bcast_bytes; 1700 edev->stats.rx_ucast_pkts = stats.rx_ucast_pkts; 1701 edev->stats.rx_mcast_pkts = stats.rx_mcast_pkts; 1702 edev->stats.rx_bcast_pkts = stats.rx_bcast_pkts; 1703 edev->stats.mftag_filter_discards = stats.mftag_filter_discards; 1704 edev->stats.mac_filter_discards = stats.mac_filter_discards; 1705 1706 edev->stats.tx_ucast_bytes = stats.tx_ucast_bytes; 1707 edev->stats.tx_mcast_bytes = stats.tx_mcast_bytes; 1708 edev->stats.tx_bcast_bytes = stats.tx_bcast_bytes; 1709 edev->stats.tx_ucast_pkts = stats.tx_ucast_pkts; 1710 edev->stats.tx_mcast_pkts = stats.tx_mcast_pkts; 1711 edev->stats.tx_bcast_pkts = stats.tx_bcast_pkts; 1712 edev->stats.tx_err_drop_pkts = stats.tx_err_drop_pkts; 1713 edev->stats.coalesced_pkts = stats.tpa_coalesced_pkts; 1714 edev->stats.coalesced_events = stats.tpa_coalesced_events; 1715 edev->stats.coalesced_aborts_num = stats.tpa_aborts_num; 1716 edev->stats.non_coalesced_pkts = stats.tpa_not_coalesced_pkts; 1717 edev->stats.coalesced_bytes = stats.tpa_coalesced_bytes; 1718 1719 edev->stats.rx_64_byte_packets = stats.rx_64_byte_packets; 1720 edev->stats.rx_65_to_127_byte_packets = stats.rx_65_to_127_byte_packets; 1721 edev->stats.rx_128_to_255_byte_packets = 1722 stats.rx_128_to_255_byte_packets; 1723 edev->stats.rx_256_to_511_byte_packets = 1724 stats.rx_256_to_511_byte_packets; 1725 edev->stats.rx_512_to_1023_byte_packets = 1726 stats.rx_512_to_1023_byte_packets; 1727 edev->stats.rx_1024_to_1518_byte_packets = 1728 stats.rx_1024_to_1518_byte_packets; 1729 edev->stats.rx_1519_to_1522_byte_packets = 1730 stats.rx_1519_to_1522_byte_packets; 1731 edev->stats.rx_1519_to_2047_byte_packets = 1732 stats.rx_1519_to_2047_byte_packets; 1733 edev->stats.rx_2048_to_4095_byte_packets = 1734 stats.rx_2048_to_4095_byte_packets; 1735 edev->stats.rx_4096_to_9216_byte_packets = 1736 stats.rx_4096_to_9216_byte_packets; 1737 edev->stats.rx_9217_to_16383_byte_packets = 1738 stats.rx_9217_to_16383_byte_packets; 1739 edev->stats.rx_crc_errors = stats.rx_crc_errors; 1740 edev->stats.rx_mac_crtl_frames = stats.rx_mac_crtl_frames; 1741 edev->stats.rx_pause_frames = stats.rx_pause_frames; 1742 edev->stats.rx_pfc_frames = stats.rx_pfc_frames; 1743 edev->stats.rx_align_errors = stats.rx_align_errors; 1744 edev->stats.rx_carrier_errors = stats.rx_carrier_errors; 1745 edev->stats.rx_oversize_packets = stats.rx_oversize_packets; 1746 edev->stats.rx_jabbers = stats.rx_jabbers; 1747 edev->stats.rx_undersize_packets = stats.rx_undersize_packets; 1748 edev->stats.rx_fragments = stats.rx_fragments; 1749 edev->stats.tx_64_byte_packets = stats.tx_64_byte_packets; 1750 edev->stats.tx_65_to_127_byte_packets = stats.tx_65_to_127_byte_packets; 1751 edev->stats.tx_128_to_255_byte_packets = 1752 stats.tx_128_to_255_byte_packets; 1753 edev->stats.tx_256_to_511_byte_packets = 1754 stats.tx_256_to_511_byte_packets; 1755 edev->stats.tx_512_to_1023_byte_packets = 1756 stats.tx_512_to_1023_byte_packets; 1757 edev->stats.tx_1024_to_1518_byte_packets = 1758 stats.tx_1024_to_1518_byte_packets; 1759 edev->stats.tx_1519_to_2047_byte_packets = 1760 stats.tx_1519_to_2047_byte_packets; 1761 edev->stats.tx_2048_to_4095_byte_packets = 1762 stats.tx_2048_to_4095_byte_packets; 1763 edev->stats.tx_4096_to_9216_byte_packets = 1764 stats.tx_4096_to_9216_byte_packets; 1765 edev->stats.tx_9217_to_16383_byte_packets = 1766 stats.tx_9217_to_16383_byte_packets; 1767 edev->stats.tx_pause_frames = stats.tx_pause_frames; 1768 edev->stats.tx_pfc_frames = stats.tx_pfc_frames; 1769 edev->stats.tx_lpi_entry_count = stats.tx_lpi_entry_count; 1770 edev->stats.tx_total_collisions = stats.tx_total_collisions; 1771 edev->stats.brb_truncates = stats.brb_truncates; 1772 edev->stats.brb_discards = stats.brb_discards; 1773 edev->stats.tx_mac_ctrl_frames = stats.tx_mac_ctrl_frames; 1774 } 1775 1776 static struct rtnl_link_stats64 *qede_get_stats64( 1777 struct net_device *dev, 1778 struct rtnl_link_stats64 *stats) 1779 { 1780 struct qede_dev *edev = netdev_priv(dev); 1781 1782 qede_fill_by_demand_stats(edev); 1783 1784 stats->rx_packets = edev->stats.rx_ucast_pkts + 1785 edev->stats.rx_mcast_pkts + 1786 edev->stats.rx_bcast_pkts; 1787 stats->tx_packets = edev->stats.tx_ucast_pkts + 1788 edev->stats.tx_mcast_pkts + 1789 edev->stats.tx_bcast_pkts; 1790 1791 stats->rx_bytes = edev->stats.rx_ucast_bytes + 1792 edev->stats.rx_mcast_bytes + 1793 edev->stats.rx_bcast_bytes; 1794 1795 stats->tx_bytes = edev->stats.tx_ucast_bytes + 1796 edev->stats.tx_mcast_bytes + 1797 edev->stats.tx_bcast_bytes; 1798 1799 stats->tx_errors = edev->stats.tx_err_drop_pkts; 1800 stats->multicast = edev->stats.rx_mcast_pkts + 1801 edev->stats.rx_bcast_pkts; 1802 1803 stats->rx_fifo_errors = edev->stats.no_buff_discards; 1804 1805 stats->collisions = edev->stats.tx_total_collisions; 1806 stats->rx_crc_errors = edev->stats.rx_crc_errors; 1807 stats->rx_frame_errors = edev->stats.rx_align_errors; 1808 1809 return stats; 1810 } 1811 1812 #ifdef CONFIG_QED_SRIOV 1813 static int qede_get_vf_config(struct net_device *dev, int vfidx, 1814 struct ifla_vf_info *ivi) 1815 { 1816 struct qede_dev *edev = netdev_priv(dev); 1817 1818 if (!edev->ops) 1819 return -EINVAL; 1820 1821 return edev->ops->iov->get_config(edev->cdev, vfidx, ivi); 1822 } 1823 1824 static int qede_set_vf_rate(struct net_device *dev, int vfidx, 1825 int min_tx_rate, int max_tx_rate) 1826 { 1827 struct qede_dev *edev = netdev_priv(dev); 1828 1829 return edev->ops->iov->set_rate(edev->cdev, vfidx, min_tx_rate, 1830 max_tx_rate); 1831 } 1832 1833 static int qede_set_vf_spoofchk(struct net_device *dev, int vfidx, bool val) 1834 { 1835 struct qede_dev *edev = netdev_priv(dev); 1836 1837 if (!edev->ops) 1838 return -EINVAL; 1839 1840 return edev->ops->iov->set_spoof(edev->cdev, vfidx, val); 1841 } 1842 1843 static int qede_set_vf_link_state(struct net_device *dev, int vfidx, 1844 int link_state) 1845 { 1846 struct qede_dev *edev = netdev_priv(dev); 1847 1848 if (!edev->ops) 1849 return -EINVAL; 1850 1851 return edev->ops->iov->set_link_state(edev->cdev, vfidx, link_state); 1852 } 1853 #endif 1854 1855 static void qede_config_accept_any_vlan(struct qede_dev *edev, bool action) 1856 { 1857 struct qed_update_vport_params params; 1858 int rc; 1859 1860 /* Proceed only if action actually needs to be performed */ 1861 if (edev->accept_any_vlan == action) 1862 return; 1863 1864 memset(¶ms, 0, sizeof(params)); 1865 1866 params.vport_id = 0; 1867 params.accept_any_vlan = action; 1868 params.update_accept_any_vlan_flg = 1; 1869 1870 rc = edev->ops->vport_update(edev->cdev, ¶ms); 1871 if (rc) { 1872 DP_ERR(edev, "Failed to %s accept-any-vlan\n", 1873 action ? "enable" : "disable"); 1874 } else { 1875 DP_INFO(edev, "%s accept-any-vlan\n", 1876 action ? "enabled" : "disabled"); 1877 edev->accept_any_vlan = action; 1878 } 1879 } 1880 1881 static int qede_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) 1882 { 1883 struct qede_dev *edev = netdev_priv(dev); 1884 struct qede_vlan *vlan, *tmp; 1885 int rc; 1886 1887 DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan 0x%04x\n", vid); 1888 1889 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 1890 if (!vlan) { 1891 DP_INFO(edev, "Failed to allocate struct for vlan\n"); 1892 return -ENOMEM; 1893 } 1894 INIT_LIST_HEAD(&vlan->list); 1895 vlan->vid = vid; 1896 vlan->configured = false; 1897 1898 /* Verify vlan isn't already configured */ 1899 list_for_each_entry(tmp, &edev->vlan_list, list) { 1900 if (tmp->vid == vlan->vid) { 1901 DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN), 1902 "vlan already configured\n"); 1903 kfree(vlan); 1904 return -EEXIST; 1905 } 1906 } 1907 1908 /* If interface is down, cache this VLAN ID and return */ 1909 if (edev->state != QEDE_STATE_OPEN) { 1910 DP_VERBOSE(edev, NETIF_MSG_IFDOWN, 1911 "Interface is down, VLAN %d will be configured when interface is up\n", 1912 vid); 1913 if (vid != 0) 1914 edev->non_configured_vlans++; 1915 list_add(&vlan->list, &edev->vlan_list); 1916 1917 return 0; 1918 } 1919 1920 /* Check for the filter limit. 1921 * Note - vlan0 has a reserved filter and can be added without 1922 * worrying about quota 1923 */ 1924 if ((edev->configured_vlans < edev->dev_info.num_vlan_filters) || 1925 (vlan->vid == 0)) { 1926 rc = qede_set_ucast_rx_vlan(edev, 1927 QED_FILTER_XCAST_TYPE_ADD, 1928 vlan->vid); 1929 if (rc) { 1930 DP_ERR(edev, "Failed to configure VLAN %d\n", 1931 vlan->vid); 1932 kfree(vlan); 1933 return -EINVAL; 1934 } 1935 vlan->configured = true; 1936 1937 /* vlan0 filter isn't consuming out of our quota */ 1938 if (vlan->vid != 0) 1939 edev->configured_vlans++; 1940 } else { 1941 /* Out of quota; Activate accept-any-VLAN mode */ 1942 if (!edev->non_configured_vlans) 1943 qede_config_accept_any_vlan(edev, true); 1944 1945 edev->non_configured_vlans++; 1946 } 1947 1948 list_add(&vlan->list, &edev->vlan_list); 1949 1950 return 0; 1951 } 1952 1953 static void qede_del_vlan_from_list(struct qede_dev *edev, 1954 struct qede_vlan *vlan) 1955 { 1956 /* vlan0 filter isn't consuming out of our quota */ 1957 if (vlan->vid != 0) { 1958 if (vlan->configured) 1959 edev->configured_vlans--; 1960 else 1961 edev->non_configured_vlans--; 1962 } 1963 1964 list_del(&vlan->list); 1965 kfree(vlan); 1966 } 1967 1968 static int qede_configure_vlan_filters(struct qede_dev *edev) 1969 { 1970 int rc = 0, real_rc = 0, accept_any_vlan = 0; 1971 struct qed_dev_eth_info *dev_info; 1972 struct qede_vlan *vlan = NULL; 1973 1974 if (list_empty(&edev->vlan_list)) 1975 return 0; 1976 1977 dev_info = &edev->dev_info; 1978 1979 /* Configure non-configured vlans */ 1980 list_for_each_entry(vlan, &edev->vlan_list, list) { 1981 if (vlan->configured) 1982 continue; 1983 1984 /* We have used all our credits, now enable accept_any_vlan */ 1985 if ((vlan->vid != 0) && 1986 (edev->configured_vlans == dev_info->num_vlan_filters)) { 1987 accept_any_vlan = 1; 1988 continue; 1989 } 1990 1991 DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan %d\n", vlan->vid); 1992 1993 rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_ADD, 1994 vlan->vid); 1995 if (rc) { 1996 DP_ERR(edev, "Failed to configure VLAN %u\n", 1997 vlan->vid); 1998 real_rc = rc; 1999 continue; 2000 } 2001 2002 vlan->configured = true; 2003 /* vlan0 filter doesn't consume our VLAN filter's quota */ 2004 if (vlan->vid != 0) { 2005 edev->non_configured_vlans--; 2006 edev->configured_vlans++; 2007 } 2008 } 2009 2010 /* enable accept_any_vlan mode if we have more VLANs than credits, 2011 * or remove accept_any_vlan mode if we've actually removed 2012 * a non-configured vlan, and all remaining vlans are truly configured. 2013 */ 2014 2015 if (accept_any_vlan) 2016 qede_config_accept_any_vlan(edev, true); 2017 else if (!edev->non_configured_vlans) 2018 qede_config_accept_any_vlan(edev, false); 2019 2020 return real_rc; 2021 } 2022 2023 static int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) 2024 { 2025 struct qede_dev *edev = netdev_priv(dev); 2026 struct qede_vlan *vlan = NULL; 2027 int rc; 2028 2029 DP_VERBOSE(edev, NETIF_MSG_IFDOWN, "Removing vlan 0x%04x\n", vid); 2030 2031 /* Find whether entry exists */ 2032 list_for_each_entry(vlan, &edev->vlan_list, list) 2033 if (vlan->vid == vid) 2034 break; 2035 2036 if (!vlan || (vlan->vid != vid)) { 2037 DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN), 2038 "Vlan isn't configured\n"); 2039 return 0; 2040 } 2041 2042 if (edev->state != QEDE_STATE_OPEN) { 2043 /* As interface is already down, we don't have a VPORT 2044 * instance to remove vlan filter. So just update vlan list 2045 */ 2046 DP_VERBOSE(edev, NETIF_MSG_IFDOWN, 2047 "Interface is down, removing VLAN from list only\n"); 2048 qede_del_vlan_from_list(edev, vlan); 2049 return 0; 2050 } 2051 2052 /* Remove vlan */ 2053 rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_DEL, vid); 2054 if (rc) { 2055 DP_ERR(edev, "Failed to remove VLAN %d\n", vid); 2056 return -EINVAL; 2057 } 2058 2059 qede_del_vlan_from_list(edev, vlan); 2060 2061 /* We have removed a VLAN - try to see if we can 2062 * configure non-configured VLAN from the list. 2063 */ 2064 rc = qede_configure_vlan_filters(edev); 2065 2066 return rc; 2067 } 2068 2069 static void qede_vlan_mark_nonconfigured(struct qede_dev *edev) 2070 { 2071 struct qede_vlan *vlan = NULL; 2072 2073 if (list_empty(&edev->vlan_list)) 2074 return; 2075 2076 list_for_each_entry(vlan, &edev->vlan_list, list) { 2077 if (!vlan->configured) 2078 continue; 2079 2080 vlan->configured = false; 2081 2082 /* vlan0 filter isn't consuming out of our quota */ 2083 if (vlan->vid != 0) { 2084 edev->non_configured_vlans++; 2085 edev->configured_vlans--; 2086 } 2087 2088 DP_VERBOSE(edev, NETIF_MSG_IFDOWN, 2089 "marked vlan %d as non-configured\n", 2090 vlan->vid); 2091 } 2092 2093 edev->accept_any_vlan = false; 2094 } 2095 2096 int qede_set_features(struct net_device *dev, netdev_features_t features) 2097 { 2098 struct qede_dev *edev = netdev_priv(dev); 2099 netdev_features_t changes = features ^ dev->features; 2100 bool need_reload = false; 2101 2102 /* No action needed if hardware GRO is disabled during driver load */ 2103 if (changes & NETIF_F_GRO) { 2104 if (dev->features & NETIF_F_GRO) 2105 need_reload = !edev->gro_disable; 2106 else 2107 need_reload = edev->gro_disable; 2108 } 2109 2110 if (need_reload && netif_running(edev->ndev)) { 2111 dev->features = features; 2112 qede_reload(edev, NULL, NULL); 2113 return 1; 2114 } 2115 2116 return 0; 2117 } 2118 2119 #ifdef CONFIG_QEDE_VXLAN 2120 static void qede_add_vxlan_port(struct net_device *dev, 2121 sa_family_t sa_family, __be16 port) 2122 { 2123 struct qede_dev *edev = netdev_priv(dev); 2124 u16 t_port = ntohs(port); 2125 2126 if (edev->vxlan_dst_port) 2127 return; 2128 2129 edev->vxlan_dst_port = t_port; 2130 2131 DP_VERBOSE(edev, QED_MSG_DEBUG, "Added vxlan port=%d", t_port); 2132 2133 set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags); 2134 schedule_delayed_work(&edev->sp_task, 0); 2135 } 2136 2137 static void qede_del_vxlan_port(struct net_device *dev, 2138 sa_family_t sa_family, __be16 port) 2139 { 2140 struct qede_dev *edev = netdev_priv(dev); 2141 u16 t_port = ntohs(port); 2142 2143 if (t_port != edev->vxlan_dst_port) 2144 return; 2145 2146 edev->vxlan_dst_port = 0; 2147 2148 DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted vxlan port=%d", t_port); 2149 2150 set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags); 2151 schedule_delayed_work(&edev->sp_task, 0); 2152 } 2153 #endif 2154 2155 #ifdef CONFIG_QEDE_GENEVE 2156 static void qede_add_geneve_port(struct net_device *dev, 2157 sa_family_t sa_family, __be16 port) 2158 { 2159 struct qede_dev *edev = netdev_priv(dev); 2160 u16 t_port = ntohs(port); 2161 2162 if (edev->geneve_dst_port) 2163 return; 2164 2165 edev->geneve_dst_port = t_port; 2166 2167 DP_VERBOSE(edev, QED_MSG_DEBUG, "Added geneve port=%d", t_port); 2168 set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags); 2169 schedule_delayed_work(&edev->sp_task, 0); 2170 } 2171 2172 static void qede_del_geneve_port(struct net_device *dev, 2173 sa_family_t sa_family, __be16 port) 2174 { 2175 struct qede_dev *edev = netdev_priv(dev); 2176 u16 t_port = ntohs(port); 2177 2178 if (t_port != edev->geneve_dst_port) 2179 return; 2180 2181 edev->geneve_dst_port = 0; 2182 2183 DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted geneve port=%d", t_port); 2184 set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags); 2185 schedule_delayed_work(&edev->sp_task, 0); 2186 } 2187 #endif 2188 2189 static const struct net_device_ops qede_netdev_ops = { 2190 .ndo_open = qede_open, 2191 .ndo_stop = qede_close, 2192 .ndo_start_xmit = qede_start_xmit, 2193 .ndo_set_rx_mode = qede_set_rx_mode, 2194 .ndo_set_mac_address = qede_set_mac_addr, 2195 .ndo_validate_addr = eth_validate_addr, 2196 .ndo_change_mtu = qede_change_mtu, 2197 #ifdef CONFIG_QED_SRIOV 2198 .ndo_set_vf_mac = qede_set_vf_mac, 2199 .ndo_set_vf_vlan = qede_set_vf_vlan, 2200 #endif 2201 .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid, 2202 .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid, 2203 .ndo_set_features = qede_set_features, 2204 .ndo_get_stats64 = qede_get_stats64, 2205 #ifdef CONFIG_QED_SRIOV 2206 .ndo_set_vf_link_state = qede_set_vf_link_state, 2207 .ndo_set_vf_spoofchk = qede_set_vf_spoofchk, 2208 .ndo_get_vf_config = qede_get_vf_config, 2209 .ndo_set_vf_rate = qede_set_vf_rate, 2210 #endif 2211 #ifdef CONFIG_QEDE_VXLAN 2212 .ndo_add_vxlan_port = qede_add_vxlan_port, 2213 .ndo_del_vxlan_port = qede_del_vxlan_port, 2214 #endif 2215 #ifdef CONFIG_QEDE_GENEVE 2216 .ndo_add_geneve_port = qede_add_geneve_port, 2217 .ndo_del_geneve_port = qede_del_geneve_port, 2218 #endif 2219 }; 2220 2221 /* ------------------------------------------------------------------------- 2222 * START OF PROBE / REMOVE 2223 * ------------------------------------------------------------------------- 2224 */ 2225 2226 static struct qede_dev *qede_alloc_etherdev(struct qed_dev *cdev, 2227 struct pci_dev *pdev, 2228 struct qed_dev_eth_info *info, 2229 u32 dp_module, 2230 u8 dp_level) 2231 { 2232 struct net_device *ndev; 2233 struct qede_dev *edev; 2234 2235 ndev = alloc_etherdev_mqs(sizeof(*edev), 2236 info->num_queues, 2237 info->num_queues); 2238 if (!ndev) { 2239 pr_err("etherdev allocation failed\n"); 2240 return NULL; 2241 } 2242 2243 edev = netdev_priv(ndev); 2244 edev->ndev = ndev; 2245 edev->cdev = cdev; 2246 edev->pdev = pdev; 2247 edev->dp_module = dp_module; 2248 edev->dp_level = dp_level; 2249 edev->ops = qed_ops; 2250 edev->q_num_rx_buffers = NUM_RX_BDS_DEF; 2251 edev->q_num_tx_buffers = NUM_TX_BDS_DEF; 2252 2253 SET_NETDEV_DEV(ndev, &pdev->dev); 2254 2255 memset(&edev->stats, 0, sizeof(edev->stats)); 2256 memcpy(&edev->dev_info, info, sizeof(*info)); 2257 2258 edev->num_tc = edev->dev_info.num_tc; 2259 2260 INIT_LIST_HEAD(&edev->vlan_list); 2261 2262 return edev; 2263 } 2264 2265 static void qede_init_ndev(struct qede_dev *edev) 2266 { 2267 struct net_device *ndev = edev->ndev; 2268 struct pci_dev *pdev = edev->pdev; 2269 u32 hw_features; 2270 2271 pci_set_drvdata(pdev, ndev); 2272 2273 ndev->mem_start = edev->dev_info.common.pci_mem_start; 2274 ndev->base_addr = ndev->mem_start; 2275 ndev->mem_end = edev->dev_info.common.pci_mem_end; 2276 ndev->irq = edev->dev_info.common.pci_irq; 2277 2278 ndev->watchdog_timeo = TX_TIMEOUT; 2279 2280 ndev->netdev_ops = &qede_netdev_ops; 2281 2282 qede_set_ethtool_ops(ndev); 2283 2284 /* user-changeble features */ 2285 hw_features = NETIF_F_GRO | NETIF_F_SG | 2286 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 2287 NETIF_F_TSO | NETIF_F_TSO6; 2288 2289 /* Encap features*/ 2290 hw_features |= NETIF_F_GSO_GRE | NETIF_F_GSO_UDP_TUNNEL | 2291 NETIF_F_TSO_ECN; 2292 ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 2293 NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO_ECN | 2294 NETIF_F_TSO6 | NETIF_F_GSO_GRE | 2295 NETIF_F_GSO_UDP_TUNNEL | NETIF_F_RXCSUM; 2296 2297 ndev->vlan_features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM | 2298 NETIF_F_HIGHDMA; 2299 ndev->features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM | 2300 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA | 2301 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX; 2302 2303 ndev->hw_features = hw_features; 2304 2305 /* Set network device HW mac */ 2306 ether_addr_copy(edev->ndev->dev_addr, edev->dev_info.common.hw_mac); 2307 } 2308 2309 /* This function converts from 32b param to two params of level and module 2310 * Input 32b decoding: 2311 * b31 - enable all NOTICE prints. NOTICE prints are for deviation from the 2312 * 'happy' flow, e.g. memory allocation failed. 2313 * b30 - enable all INFO prints. INFO prints are for major steps in the flow 2314 * and provide important parameters. 2315 * b29-b0 - per-module bitmap, where each bit enables VERBOSE prints of that 2316 * module. VERBOSE prints are for tracking the specific flow in low level. 2317 * 2318 * Notice that the level should be that of the lowest required logs. 2319 */ 2320 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level) 2321 { 2322 *p_dp_level = QED_LEVEL_NOTICE; 2323 *p_dp_module = 0; 2324 2325 if (debug & QED_LOG_VERBOSE_MASK) { 2326 *p_dp_level = QED_LEVEL_VERBOSE; 2327 *p_dp_module = (debug & 0x3FFFFFFF); 2328 } else if (debug & QED_LOG_INFO_MASK) { 2329 *p_dp_level = QED_LEVEL_INFO; 2330 } else if (debug & QED_LOG_NOTICE_MASK) { 2331 *p_dp_level = QED_LEVEL_NOTICE; 2332 } 2333 } 2334 2335 static void qede_free_fp_array(struct qede_dev *edev) 2336 { 2337 if (edev->fp_array) { 2338 struct qede_fastpath *fp; 2339 int i; 2340 2341 for_each_rss(i) { 2342 fp = &edev->fp_array[i]; 2343 2344 kfree(fp->sb_info); 2345 kfree(fp->rxq); 2346 kfree(fp->txqs); 2347 } 2348 kfree(edev->fp_array); 2349 } 2350 edev->num_rss = 0; 2351 } 2352 2353 static int qede_alloc_fp_array(struct qede_dev *edev) 2354 { 2355 struct qede_fastpath *fp; 2356 int i; 2357 2358 edev->fp_array = kcalloc(QEDE_RSS_CNT(edev), 2359 sizeof(*edev->fp_array), GFP_KERNEL); 2360 if (!edev->fp_array) { 2361 DP_NOTICE(edev, "fp array allocation failed\n"); 2362 goto err; 2363 } 2364 2365 for_each_rss(i) { 2366 fp = &edev->fp_array[i]; 2367 2368 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2369 if (!fp->sb_info) { 2370 DP_NOTICE(edev, "sb info struct allocation failed\n"); 2371 goto err; 2372 } 2373 2374 fp->rxq = kcalloc(1, sizeof(*fp->rxq), GFP_KERNEL); 2375 if (!fp->rxq) { 2376 DP_NOTICE(edev, "RXQ struct allocation failed\n"); 2377 goto err; 2378 } 2379 2380 fp->txqs = kcalloc(edev->num_tc, sizeof(*fp->txqs), GFP_KERNEL); 2381 if (!fp->txqs) { 2382 DP_NOTICE(edev, "TXQ array allocation failed\n"); 2383 goto err; 2384 } 2385 } 2386 2387 return 0; 2388 err: 2389 qede_free_fp_array(edev); 2390 return -ENOMEM; 2391 } 2392 2393 static void qede_sp_task(struct work_struct *work) 2394 { 2395 struct qede_dev *edev = container_of(work, struct qede_dev, 2396 sp_task.work); 2397 struct qed_dev *cdev = edev->cdev; 2398 2399 mutex_lock(&edev->qede_lock); 2400 2401 if (edev->state == QEDE_STATE_OPEN) { 2402 if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags)) 2403 qede_config_rx_mode(edev->ndev); 2404 } 2405 2406 if (test_and_clear_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags)) { 2407 struct qed_tunn_params tunn_params; 2408 2409 memset(&tunn_params, 0, sizeof(tunn_params)); 2410 tunn_params.update_vxlan_port = 1; 2411 tunn_params.vxlan_port = edev->vxlan_dst_port; 2412 qed_ops->tunn_config(cdev, &tunn_params); 2413 } 2414 2415 if (test_and_clear_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags)) { 2416 struct qed_tunn_params tunn_params; 2417 2418 memset(&tunn_params, 0, sizeof(tunn_params)); 2419 tunn_params.update_geneve_port = 1; 2420 tunn_params.geneve_port = edev->geneve_dst_port; 2421 qed_ops->tunn_config(cdev, &tunn_params); 2422 } 2423 2424 mutex_unlock(&edev->qede_lock); 2425 } 2426 2427 static void qede_update_pf_params(struct qed_dev *cdev) 2428 { 2429 struct qed_pf_params pf_params; 2430 2431 /* 64 rx + 64 tx */ 2432 memset(&pf_params, 0, sizeof(struct qed_pf_params)); 2433 pf_params.eth_pf_params.num_cons = 128; 2434 qed_ops->common->update_pf_params(cdev, &pf_params); 2435 } 2436 2437 enum qede_probe_mode { 2438 QEDE_PROBE_NORMAL, 2439 }; 2440 2441 static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level, 2442 bool is_vf, enum qede_probe_mode mode) 2443 { 2444 struct qed_probe_params probe_params; 2445 struct qed_slowpath_params params; 2446 struct qed_dev_eth_info dev_info; 2447 struct qede_dev *edev; 2448 struct qed_dev *cdev; 2449 int rc; 2450 2451 if (unlikely(dp_level & QED_LEVEL_INFO)) 2452 pr_notice("Starting qede probe\n"); 2453 2454 memset(&probe_params, 0, sizeof(probe_params)); 2455 probe_params.protocol = QED_PROTOCOL_ETH; 2456 probe_params.dp_module = dp_module; 2457 probe_params.dp_level = dp_level; 2458 probe_params.is_vf = is_vf; 2459 cdev = qed_ops->common->probe(pdev, &probe_params); 2460 if (!cdev) { 2461 rc = -ENODEV; 2462 goto err0; 2463 } 2464 2465 qede_update_pf_params(cdev); 2466 2467 /* Start the Slowpath-process */ 2468 memset(¶ms, 0, sizeof(struct qed_slowpath_params)); 2469 params.int_mode = QED_INT_MODE_MSIX; 2470 params.drv_major = QEDE_MAJOR_VERSION; 2471 params.drv_minor = QEDE_MINOR_VERSION; 2472 params.drv_rev = QEDE_REVISION_VERSION; 2473 params.drv_eng = QEDE_ENGINEERING_VERSION; 2474 strlcpy(params.name, "qede LAN", QED_DRV_VER_STR_SIZE); 2475 rc = qed_ops->common->slowpath_start(cdev, ¶ms); 2476 if (rc) { 2477 pr_notice("Cannot start slowpath\n"); 2478 goto err1; 2479 } 2480 2481 /* Learn information crucial for qede to progress */ 2482 rc = qed_ops->fill_dev_info(cdev, &dev_info); 2483 if (rc) 2484 goto err2; 2485 2486 edev = qede_alloc_etherdev(cdev, pdev, &dev_info, dp_module, 2487 dp_level); 2488 if (!edev) { 2489 rc = -ENOMEM; 2490 goto err2; 2491 } 2492 2493 if (is_vf) 2494 edev->flags |= QEDE_FLAG_IS_VF; 2495 2496 qede_init_ndev(edev); 2497 2498 rc = register_netdev(edev->ndev); 2499 if (rc) { 2500 DP_NOTICE(edev, "Cannot register net-device\n"); 2501 goto err3; 2502 } 2503 2504 edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION); 2505 2506 edev->ops->register_ops(cdev, &qede_ll_ops, edev); 2507 2508 INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task); 2509 mutex_init(&edev->qede_lock); 2510 2511 DP_INFO(edev, "Ending successfully qede probe\n"); 2512 2513 return 0; 2514 2515 err3: 2516 free_netdev(edev->ndev); 2517 err2: 2518 qed_ops->common->slowpath_stop(cdev); 2519 err1: 2520 qed_ops->common->remove(cdev); 2521 err0: 2522 return rc; 2523 } 2524 2525 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id) 2526 { 2527 bool is_vf = false; 2528 u32 dp_module = 0; 2529 u8 dp_level = 0; 2530 2531 switch ((enum qede_pci_private)id->driver_data) { 2532 case QEDE_PRIVATE_VF: 2533 if (debug & QED_LOG_VERBOSE_MASK) 2534 dev_err(&pdev->dev, "Probing a VF\n"); 2535 is_vf = true; 2536 break; 2537 default: 2538 if (debug & QED_LOG_VERBOSE_MASK) 2539 dev_err(&pdev->dev, "Probing a PF\n"); 2540 } 2541 2542 qede_config_debug(debug, &dp_module, &dp_level); 2543 2544 return __qede_probe(pdev, dp_module, dp_level, is_vf, 2545 QEDE_PROBE_NORMAL); 2546 } 2547 2548 enum qede_remove_mode { 2549 QEDE_REMOVE_NORMAL, 2550 }; 2551 2552 static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode) 2553 { 2554 struct net_device *ndev = pci_get_drvdata(pdev); 2555 struct qede_dev *edev = netdev_priv(ndev); 2556 struct qed_dev *cdev = edev->cdev; 2557 2558 DP_INFO(edev, "Starting qede_remove\n"); 2559 2560 cancel_delayed_work_sync(&edev->sp_task); 2561 unregister_netdev(ndev); 2562 2563 edev->ops->common->set_power_state(cdev, PCI_D0); 2564 2565 pci_set_drvdata(pdev, NULL); 2566 2567 free_netdev(ndev); 2568 2569 /* Use global ops since we've freed edev */ 2570 qed_ops->common->slowpath_stop(cdev); 2571 qed_ops->common->remove(cdev); 2572 2573 pr_notice("Ending successfully qede_remove\n"); 2574 } 2575 2576 static void qede_remove(struct pci_dev *pdev) 2577 { 2578 __qede_remove(pdev, QEDE_REMOVE_NORMAL); 2579 } 2580 2581 /* ------------------------------------------------------------------------- 2582 * START OF LOAD / UNLOAD 2583 * ------------------------------------------------------------------------- 2584 */ 2585 2586 static int qede_set_num_queues(struct qede_dev *edev) 2587 { 2588 int rc; 2589 u16 rss_num; 2590 2591 /* Setup queues according to possible resources*/ 2592 if (edev->req_rss) 2593 rss_num = edev->req_rss; 2594 else 2595 rss_num = netif_get_num_default_rss_queues() * 2596 edev->dev_info.common.num_hwfns; 2597 2598 rss_num = min_t(u16, QEDE_MAX_RSS_CNT(edev), rss_num); 2599 2600 rc = edev->ops->common->set_fp_int(edev->cdev, rss_num); 2601 if (rc > 0) { 2602 /* Managed to request interrupts for our queues */ 2603 edev->num_rss = rc; 2604 DP_INFO(edev, "Managed %d [of %d] RSS queues\n", 2605 QEDE_RSS_CNT(edev), rss_num); 2606 rc = 0; 2607 } 2608 return rc; 2609 } 2610 2611 static void qede_free_mem_sb(struct qede_dev *edev, 2612 struct qed_sb_info *sb_info) 2613 { 2614 if (sb_info->sb_virt) 2615 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_info->sb_virt), 2616 (void *)sb_info->sb_virt, sb_info->sb_phys); 2617 } 2618 2619 /* This function allocates fast-path status block memory */ 2620 static int qede_alloc_mem_sb(struct qede_dev *edev, 2621 struct qed_sb_info *sb_info, 2622 u16 sb_id) 2623 { 2624 struct status_block *sb_virt; 2625 dma_addr_t sb_phys; 2626 int rc; 2627 2628 sb_virt = dma_alloc_coherent(&edev->pdev->dev, 2629 sizeof(*sb_virt), 2630 &sb_phys, GFP_KERNEL); 2631 if (!sb_virt) { 2632 DP_ERR(edev, "Status block allocation failed\n"); 2633 return -ENOMEM; 2634 } 2635 2636 rc = edev->ops->common->sb_init(edev->cdev, sb_info, 2637 sb_virt, sb_phys, sb_id, 2638 QED_SB_TYPE_L2_QUEUE); 2639 if (rc) { 2640 DP_ERR(edev, "Status block initialization failed\n"); 2641 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_virt), 2642 sb_virt, sb_phys); 2643 return rc; 2644 } 2645 2646 return 0; 2647 } 2648 2649 static void qede_free_rx_buffers(struct qede_dev *edev, 2650 struct qede_rx_queue *rxq) 2651 { 2652 u16 i; 2653 2654 for (i = rxq->sw_rx_cons; i != rxq->sw_rx_prod; i++) { 2655 struct sw_rx_data *rx_buf; 2656 struct page *data; 2657 2658 rx_buf = &rxq->sw_rx_ring[i & NUM_RX_BDS_MAX]; 2659 data = rx_buf->data; 2660 2661 dma_unmap_page(&edev->pdev->dev, 2662 rx_buf->mapping, 2663 PAGE_SIZE, DMA_FROM_DEVICE); 2664 2665 rx_buf->data = NULL; 2666 __free_page(data); 2667 } 2668 } 2669 2670 static void qede_free_sge_mem(struct qede_dev *edev, 2671 struct qede_rx_queue *rxq) { 2672 int i; 2673 2674 if (edev->gro_disable) 2675 return; 2676 2677 for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) { 2678 struct qede_agg_info *tpa_info = &rxq->tpa_info[i]; 2679 struct sw_rx_data *replace_buf = &tpa_info->replace_buf; 2680 2681 if (replace_buf->data) { 2682 dma_unmap_page(&edev->pdev->dev, 2683 replace_buf->mapping, 2684 PAGE_SIZE, DMA_FROM_DEVICE); 2685 __free_page(replace_buf->data); 2686 } 2687 } 2688 } 2689 2690 static void qede_free_mem_rxq(struct qede_dev *edev, 2691 struct qede_rx_queue *rxq) 2692 { 2693 qede_free_sge_mem(edev, rxq); 2694 2695 /* Free rx buffers */ 2696 qede_free_rx_buffers(edev, rxq); 2697 2698 /* Free the parallel SW ring */ 2699 kfree(rxq->sw_rx_ring); 2700 2701 /* Free the real RQ ring used by FW */ 2702 edev->ops->common->chain_free(edev->cdev, &rxq->rx_bd_ring); 2703 edev->ops->common->chain_free(edev->cdev, &rxq->rx_comp_ring); 2704 } 2705 2706 static int qede_alloc_rx_buffer(struct qede_dev *edev, 2707 struct qede_rx_queue *rxq) 2708 { 2709 struct sw_rx_data *sw_rx_data; 2710 struct eth_rx_bd *rx_bd; 2711 dma_addr_t mapping; 2712 struct page *data; 2713 u16 rx_buf_size; 2714 2715 rx_buf_size = rxq->rx_buf_size; 2716 2717 data = alloc_pages(GFP_ATOMIC, 0); 2718 if (unlikely(!data)) { 2719 DP_NOTICE(edev, "Failed to allocate Rx data [page]\n"); 2720 return -ENOMEM; 2721 } 2722 2723 /* Map the entire page as it would be used 2724 * for multiple RX buffer segment size mapping. 2725 */ 2726 mapping = dma_map_page(&edev->pdev->dev, data, 0, 2727 PAGE_SIZE, DMA_FROM_DEVICE); 2728 if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) { 2729 __free_page(data); 2730 DP_NOTICE(edev, "Failed to map Rx buffer\n"); 2731 return -ENOMEM; 2732 } 2733 2734 sw_rx_data = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX]; 2735 sw_rx_data->page_offset = 0; 2736 sw_rx_data->data = data; 2737 sw_rx_data->mapping = mapping; 2738 2739 /* Advance PROD and get BD pointer */ 2740 rx_bd = (struct eth_rx_bd *)qed_chain_produce(&rxq->rx_bd_ring); 2741 WARN_ON(!rx_bd); 2742 rx_bd->addr.hi = cpu_to_le32(upper_32_bits(mapping)); 2743 rx_bd->addr.lo = cpu_to_le32(lower_32_bits(mapping)); 2744 2745 rxq->sw_rx_prod++; 2746 2747 return 0; 2748 } 2749 2750 static int qede_alloc_sge_mem(struct qede_dev *edev, 2751 struct qede_rx_queue *rxq) 2752 { 2753 dma_addr_t mapping; 2754 int i; 2755 2756 if (edev->gro_disable) 2757 return 0; 2758 2759 if (edev->ndev->mtu > PAGE_SIZE) { 2760 edev->gro_disable = 1; 2761 return 0; 2762 } 2763 2764 for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) { 2765 struct qede_agg_info *tpa_info = &rxq->tpa_info[i]; 2766 struct sw_rx_data *replace_buf = &tpa_info->replace_buf; 2767 2768 replace_buf->data = alloc_pages(GFP_ATOMIC, 0); 2769 if (unlikely(!replace_buf->data)) { 2770 DP_NOTICE(edev, 2771 "Failed to allocate TPA skb pool [replacement buffer]\n"); 2772 goto err; 2773 } 2774 2775 mapping = dma_map_page(&edev->pdev->dev, replace_buf->data, 0, 2776 rxq->rx_buf_size, DMA_FROM_DEVICE); 2777 if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) { 2778 DP_NOTICE(edev, 2779 "Failed to map TPA replacement buffer\n"); 2780 goto err; 2781 } 2782 2783 replace_buf->mapping = mapping; 2784 tpa_info->replace_buf.page_offset = 0; 2785 2786 tpa_info->replace_buf_mapping = mapping; 2787 tpa_info->agg_state = QEDE_AGG_STATE_NONE; 2788 } 2789 2790 return 0; 2791 err: 2792 qede_free_sge_mem(edev, rxq); 2793 edev->gro_disable = 1; 2794 return -ENOMEM; 2795 } 2796 2797 /* This function allocates all memory needed per Rx queue */ 2798 static int qede_alloc_mem_rxq(struct qede_dev *edev, 2799 struct qede_rx_queue *rxq) 2800 { 2801 int i, rc, size; 2802 2803 rxq->num_rx_buffers = edev->q_num_rx_buffers; 2804 2805 rxq->rx_buf_size = NET_IP_ALIGN + ETH_OVERHEAD + 2806 edev->ndev->mtu; 2807 if (rxq->rx_buf_size > PAGE_SIZE) 2808 rxq->rx_buf_size = PAGE_SIZE; 2809 2810 /* Segment size to spilt a page in multiple equal parts */ 2811 rxq->rx_buf_seg_size = roundup_pow_of_two(rxq->rx_buf_size); 2812 2813 /* Allocate the parallel driver ring for Rx buffers */ 2814 size = sizeof(*rxq->sw_rx_ring) * RX_RING_SIZE; 2815 rxq->sw_rx_ring = kzalloc(size, GFP_KERNEL); 2816 if (!rxq->sw_rx_ring) { 2817 DP_ERR(edev, "Rx buffers ring allocation failed\n"); 2818 rc = -ENOMEM; 2819 goto err; 2820 } 2821 2822 /* Allocate FW Rx ring */ 2823 rc = edev->ops->common->chain_alloc(edev->cdev, 2824 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 2825 QED_CHAIN_MODE_NEXT_PTR, 2826 RX_RING_SIZE, 2827 sizeof(struct eth_rx_bd), 2828 &rxq->rx_bd_ring); 2829 2830 if (rc) 2831 goto err; 2832 2833 /* Allocate FW completion ring */ 2834 rc = edev->ops->common->chain_alloc(edev->cdev, 2835 QED_CHAIN_USE_TO_CONSUME, 2836 QED_CHAIN_MODE_PBL, 2837 RX_RING_SIZE, 2838 sizeof(union eth_rx_cqe), 2839 &rxq->rx_comp_ring); 2840 if (rc) 2841 goto err; 2842 2843 /* Allocate buffers for the Rx ring */ 2844 for (i = 0; i < rxq->num_rx_buffers; i++) { 2845 rc = qede_alloc_rx_buffer(edev, rxq); 2846 if (rc) { 2847 DP_ERR(edev, 2848 "Rx buffers allocation failed at index %d\n", i); 2849 goto err; 2850 } 2851 } 2852 2853 rc = qede_alloc_sge_mem(edev, rxq); 2854 err: 2855 return rc; 2856 } 2857 2858 static void qede_free_mem_txq(struct qede_dev *edev, 2859 struct qede_tx_queue *txq) 2860 { 2861 /* Free the parallel SW ring */ 2862 kfree(txq->sw_tx_ring); 2863 2864 /* Free the real RQ ring used by FW */ 2865 edev->ops->common->chain_free(edev->cdev, &txq->tx_pbl); 2866 } 2867 2868 /* This function allocates all memory needed per Tx queue */ 2869 static int qede_alloc_mem_txq(struct qede_dev *edev, 2870 struct qede_tx_queue *txq) 2871 { 2872 int size, rc; 2873 union eth_tx_bd_types *p_virt; 2874 2875 txq->num_tx_buffers = edev->q_num_tx_buffers; 2876 2877 /* Allocate the parallel driver ring for Tx buffers */ 2878 size = sizeof(*txq->sw_tx_ring) * NUM_TX_BDS_MAX; 2879 txq->sw_tx_ring = kzalloc(size, GFP_KERNEL); 2880 if (!txq->sw_tx_ring) { 2881 DP_NOTICE(edev, "Tx buffers ring allocation failed\n"); 2882 goto err; 2883 } 2884 2885 rc = edev->ops->common->chain_alloc(edev->cdev, 2886 QED_CHAIN_USE_TO_CONSUME_PRODUCE, 2887 QED_CHAIN_MODE_PBL, 2888 NUM_TX_BDS_MAX, 2889 sizeof(*p_virt), 2890 &txq->tx_pbl); 2891 if (rc) 2892 goto err; 2893 2894 return 0; 2895 2896 err: 2897 qede_free_mem_txq(edev, txq); 2898 return -ENOMEM; 2899 } 2900 2901 /* This function frees all memory of a single fp */ 2902 static void qede_free_mem_fp(struct qede_dev *edev, 2903 struct qede_fastpath *fp) 2904 { 2905 int tc; 2906 2907 qede_free_mem_sb(edev, fp->sb_info); 2908 2909 qede_free_mem_rxq(edev, fp->rxq); 2910 2911 for (tc = 0; tc < edev->num_tc; tc++) 2912 qede_free_mem_txq(edev, &fp->txqs[tc]); 2913 } 2914 2915 /* This function allocates all memory needed for a single fp (i.e. an entity 2916 * which contains status block, one rx queue and multiple per-TC tx queues. 2917 */ 2918 static int qede_alloc_mem_fp(struct qede_dev *edev, 2919 struct qede_fastpath *fp) 2920 { 2921 int rc, tc; 2922 2923 rc = qede_alloc_mem_sb(edev, fp->sb_info, fp->rss_id); 2924 if (rc) 2925 goto err; 2926 2927 rc = qede_alloc_mem_rxq(edev, fp->rxq); 2928 if (rc) 2929 goto err; 2930 2931 for (tc = 0; tc < edev->num_tc; tc++) { 2932 rc = qede_alloc_mem_txq(edev, &fp->txqs[tc]); 2933 if (rc) 2934 goto err; 2935 } 2936 2937 return 0; 2938 err: 2939 return rc; 2940 } 2941 2942 static void qede_free_mem_load(struct qede_dev *edev) 2943 { 2944 int i; 2945 2946 for_each_rss(i) { 2947 struct qede_fastpath *fp = &edev->fp_array[i]; 2948 2949 qede_free_mem_fp(edev, fp); 2950 } 2951 } 2952 2953 /* This function allocates all qede memory at NIC load. */ 2954 static int qede_alloc_mem_load(struct qede_dev *edev) 2955 { 2956 int rc = 0, rss_id; 2957 2958 for (rss_id = 0; rss_id < QEDE_RSS_CNT(edev); rss_id++) { 2959 struct qede_fastpath *fp = &edev->fp_array[rss_id]; 2960 2961 rc = qede_alloc_mem_fp(edev, fp); 2962 if (rc) { 2963 DP_ERR(edev, 2964 "Failed to allocate memory for fastpath - rss id = %d\n", 2965 rss_id); 2966 qede_free_mem_load(edev); 2967 return rc; 2968 } 2969 } 2970 2971 return 0; 2972 } 2973 2974 /* This function inits fp content and resets the SB, RXQ and TXQ structures */ 2975 static void qede_init_fp(struct qede_dev *edev) 2976 { 2977 int rss_id, txq_index, tc; 2978 struct qede_fastpath *fp; 2979 2980 for_each_rss(rss_id) { 2981 fp = &edev->fp_array[rss_id]; 2982 2983 fp->edev = edev; 2984 fp->rss_id = rss_id; 2985 2986 memset((void *)&fp->napi, 0, sizeof(fp->napi)); 2987 2988 memset((void *)fp->sb_info, 0, sizeof(*fp->sb_info)); 2989 2990 memset((void *)fp->rxq, 0, sizeof(*fp->rxq)); 2991 fp->rxq->rxq_id = rss_id; 2992 2993 memset((void *)fp->txqs, 0, (edev->num_tc * sizeof(*fp->txqs))); 2994 for (tc = 0; tc < edev->num_tc; tc++) { 2995 txq_index = tc * QEDE_RSS_CNT(edev) + rss_id; 2996 fp->txqs[tc].index = txq_index; 2997 } 2998 2999 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", 3000 edev->ndev->name, rss_id); 3001 } 3002 3003 edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO); 3004 } 3005 3006 static int qede_set_real_num_queues(struct qede_dev *edev) 3007 { 3008 int rc = 0; 3009 3010 rc = netif_set_real_num_tx_queues(edev->ndev, QEDE_TSS_CNT(edev)); 3011 if (rc) { 3012 DP_NOTICE(edev, "Failed to set real number of Tx queues\n"); 3013 return rc; 3014 } 3015 rc = netif_set_real_num_rx_queues(edev->ndev, QEDE_RSS_CNT(edev)); 3016 if (rc) { 3017 DP_NOTICE(edev, "Failed to set real number of Rx queues\n"); 3018 return rc; 3019 } 3020 3021 return 0; 3022 } 3023 3024 static void qede_napi_disable_remove(struct qede_dev *edev) 3025 { 3026 int i; 3027 3028 for_each_rss(i) { 3029 napi_disable(&edev->fp_array[i].napi); 3030 3031 netif_napi_del(&edev->fp_array[i].napi); 3032 } 3033 } 3034 3035 static void qede_napi_add_enable(struct qede_dev *edev) 3036 { 3037 int i; 3038 3039 /* Add NAPI objects */ 3040 for_each_rss(i) { 3041 netif_napi_add(edev->ndev, &edev->fp_array[i].napi, 3042 qede_poll, NAPI_POLL_WEIGHT); 3043 napi_enable(&edev->fp_array[i].napi); 3044 } 3045 } 3046 3047 static void qede_sync_free_irqs(struct qede_dev *edev) 3048 { 3049 int i; 3050 3051 for (i = 0; i < edev->int_info.used_cnt; i++) { 3052 if (edev->int_info.msix_cnt) { 3053 synchronize_irq(edev->int_info.msix[i].vector); 3054 free_irq(edev->int_info.msix[i].vector, 3055 &edev->fp_array[i]); 3056 } else { 3057 edev->ops->common->simd_handler_clean(edev->cdev, i); 3058 } 3059 } 3060 3061 edev->int_info.used_cnt = 0; 3062 } 3063 3064 static int qede_req_msix_irqs(struct qede_dev *edev) 3065 { 3066 int i, rc; 3067 3068 /* Sanitize number of interrupts == number of prepared RSS queues */ 3069 if (QEDE_RSS_CNT(edev) > edev->int_info.msix_cnt) { 3070 DP_ERR(edev, 3071 "Interrupt mismatch: %d RSS queues > %d MSI-x vectors\n", 3072 QEDE_RSS_CNT(edev), edev->int_info.msix_cnt); 3073 return -EINVAL; 3074 } 3075 3076 for (i = 0; i < QEDE_RSS_CNT(edev); i++) { 3077 rc = request_irq(edev->int_info.msix[i].vector, 3078 qede_msix_fp_int, 0, edev->fp_array[i].name, 3079 &edev->fp_array[i]); 3080 if (rc) { 3081 DP_ERR(edev, "Request fp %d irq failed\n", i); 3082 qede_sync_free_irqs(edev); 3083 return rc; 3084 } 3085 DP_VERBOSE(edev, NETIF_MSG_INTR, 3086 "Requested fp irq for %s [entry %d]. Cookie is at %p\n", 3087 edev->fp_array[i].name, i, 3088 &edev->fp_array[i]); 3089 edev->int_info.used_cnt++; 3090 } 3091 3092 return 0; 3093 } 3094 3095 static void qede_simd_fp_handler(void *cookie) 3096 { 3097 struct qede_fastpath *fp = (struct qede_fastpath *)cookie; 3098 3099 napi_schedule_irqoff(&fp->napi); 3100 } 3101 3102 static int qede_setup_irqs(struct qede_dev *edev) 3103 { 3104 int i, rc = 0; 3105 3106 /* Learn Interrupt configuration */ 3107 rc = edev->ops->common->get_fp_int(edev->cdev, &edev->int_info); 3108 if (rc) 3109 return rc; 3110 3111 if (edev->int_info.msix_cnt) { 3112 rc = qede_req_msix_irqs(edev); 3113 if (rc) 3114 return rc; 3115 edev->ndev->irq = edev->int_info.msix[0].vector; 3116 } else { 3117 const struct qed_common_ops *ops; 3118 3119 /* qed should learn receive the RSS ids and callbacks */ 3120 ops = edev->ops->common; 3121 for (i = 0; i < QEDE_RSS_CNT(edev); i++) 3122 ops->simd_handler_config(edev->cdev, 3123 &edev->fp_array[i], i, 3124 qede_simd_fp_handler); 3125 edev->int_info.used_cnt = QEDE_RSS_CNT(edev); 3126 } 3127 return 0; 3128 } 3129 3130 static int qede_drain_txq(struct qede_dev *edev, 3131 struct qede_tx_queue *txq, 3132 bool allow_drain) 3133 { 3134 int rc, cnt = 1000; 3135 3136 while (txq->sw_tx_cons != txq->sw_tx_prod) { 3137 if (!cnt) { 3138 if (allow_drain) { 3139 DP_NOTICE(edev, 3140 "Tx queue[%d] is stuck, requesting MCP to drain\n", 3141 txq->index); 3142 rc = edev->ops->common->drain(edev->cdev); 3143 if (rc) 3144 return rc; 3145 return qede_drain_txq(edev, txq, false); 3146 } 3147 DP_NOTICE(edev, 3148 "Timeout waiting for tx queue[%d]: PROD=%d, CONS=%d\n", 3149 txq->index, txq->sw_tx_prod, 3150 txq->sw_tx_cons); 3151 return -ENODEV; 3152 } 3153 cnt--; 3154 usleep_range(1000, 2000); 3155 barrier(); 3156 } 3157 3158 /* FW finished processing, wait for HW to transmit all tx packets */ 3159 usleep_range(1000, 2000); 3160 3161 return 0; 3162 } 3163 3164 static int qede_stop_queues(struct qede_dev *edev) 3165 { 3166 struct qed_update_vport_params vport_update_params; 3167 struct qed_dev *cdev = edev->cdev; 3168 int rc, tc, i; 3169 3170 /* Disable the vport */ 3171 memset(&vport_update_params, 0, sizeof(vport_update_params)); 3172 vport_update_params.vport_id = 0; 3173 vport_update_params.update_vport_active_flg = 1; 3174 vport_update_params.vport_active_flg = 0; 3175 vport_update_params.update_rss_flg = 0; 3176 3177 rc = edev->ops->vport_update(cdev, &vport_update_params); 3178 if (rc) { 3179 DP_ERR(edev, "Failed to update vport\n"); 3180 return rc; 3181 } 3182 3183 /* Flush Tx queues. If needed, request drain from MCP */ 3184 for_each_rss(i) { 3185 struct qede_fastpath *fp = &edev->fp_array[i]; 3186 3187 for (tc = 0; tc < edev->num_tc; tc++) { 3188 struct qede_tx_queue *txq = &fp->txqs[tc]; 3189 3190 rc = qede_drain_txq(edev, txq, true); 3191 if (rc) 3192 return rc; 3193 } 3194 } 3195 3196 /* Stop all Queues in reverse order*/ 3197 for (i = QEDE_RSS_CNT(edev) - 1; i >= 0; i--) { 3198 struct qed_stop_rxq_params rx_params; 3199 3200 /* Stop the Tx Queue(s)*/ 3201 for (tc = 0; tc < edev->num_tc; tc++) { 3202 struct qed_stop_txq_params tx_params; 3203 3204 tx_params.rss_id = i; 3205 tx_params.tx_queue_id = tc * QEDE_RSS_CNT(edev) + i; 3206 rc = edev->ops->q_tx_stop(cdev, &tx_params); 3207 if (rc) { 3208 DP_ERR(edev, "Failed to stop TXQ #%d\n", 3209 tx_params.tx_queue_id); 3210 return rc; 3211 } 3212 } 3213 3214 /* Stop the Rx Queue*/ 3215 memset(&rx_params, 0, sizeof(rx_params)); 3216 rx_params.rss_id = i; 3217 rx_params.rx_queue_id = i; 3218 3219 rc = edev->ops->q_rx_stop(cdev, &rx_params); 3220 if (rc) { 3221 DP_ERR(edev, "Failed to stop RXQ #%d\n", i); 3222 return rc; 3223 } 3224 } 3225 3226 /* Stop the vport */ 3227 rc = edev->ops->vport_stop(cdev, 0); 3228 if (rc) 3229 DP_ERR(edev, "Failed to stop VPORT\n"); 3230 3231 return rc; 3232 } 3233 3234 static int qede_start_queues(struct qede_dev *edev, bool clear_stats) 3235 { 3236 int rc, tc, i; 3237 int vlan_removal_en = 1; 3238 struct qed_dev *cdev = edev->cdev; 3239 struct qed_update_vport_params vport_update_params; 3240 struct qed_queue_start_common_params q_params; 3241 struct qed_dev_info *qed_info = &edev->dev_info.common; 3242 struct qed_start_vport_params start = {0}; 3243 bool reset_rss_indir = false; 3244 3245 if (!edev->num_rss) { 3246 DP_ERR(edev, 3247 "Cannot update V-VPORT as active as there are no Rx queues\n"); 3248 return -EINVAL; 3249 } 3250 3251 start.gro_enable = !edev->gro_disable; 3252 start.mtu = edev->ndev->mtu; 3253 start.vport_id = 0; 3254 start.drop_ttl0 = true; 3255 start.remove_inner_vlan = vlan_removal_en; 3256 3257 rc = edev->ops->vport_start(cdev, &start); 3258 3259 if (rc) { 3260 DP_ERR(edev, "Start V-PORT failed %d\n", rc); 3261 return rc; 3262 } 3263 3264 DP_VERBOSE(edev, NETIF_MSG_IFUP, 3265 "Start vport ramrod passed, vport_id = %d, MTU = %d, vlan_removal_en = %d\n", 3266 start.vport_id, edev->ndev->mtu + 0xe, vlan_removal_en); 3267 3268 for_each_rss(i) { 3269 struct qede_fastpath *fp = &edev->fp_array[i]; 3270 dma_addr_t phys_table = fp->rxq->rx_comp_ring.pbl.p_phys_table; 3271 3272 memset(&q_params, 0, sizeof(q_params)); 3273 q_params.rss_id = i; 3274 q_params.queue_id = i; 3275 q_params.vport_id = 0; 3276 q_params.sb = fp->sb_info->igu_sb_id; 3277 q_params.sb_idx = RX_PI; 3278 3279 rc = edev->ops->q_rx_start(cdev, &q_params, 3280 fp->rxq->rx_buf_size, 3281 fp->rxq->rx_bd_ring.p_phys_addr, 3282 phys_table, 3283 fp->rxq->rx_comp_ring.page_cnt, 3284 &fp->rxq->hw_rxq_prod_addr); 3285 if (rc) { 3286 DP_ERR(edev, "Start RXQ #%d failed %d\n", i, rc); 3287 return rc; 3288 } 3289 3290 fp->rxq->hw_cons_ptr = &fp->sb_info->sb_virt->pi_array[RX_PI]; 3291 3292 qede_update_rx_prod(edev, fp->rxq); 3293 3294 for (tc = 0; tc < edev->num_tc; tc++) { 3295 struct qede_tx_queue *txq = &fp->txqs[tc]; 3296 int txq_index = tc * QEDE_RSS_CNT(edev) + i; 3297 3298 memset(&q_params, 0, sizeof(q_params)); 3299 q_params.rss_id = i; 3300 q_params.queue_id = txq_index; 3301 q_params.vport_id = 0; 3302 q_params.sb = fp->sb_info->igu_sb_id; 3303 q_params.sb_idx = TX_PI(tc); 3304 3305 rc = edev->ops->q_tx_start(cdev, &q_params, 3306 txq->tx_pbl.pbl.p_phys_table, 3307 txq->tx_pbl.page_cnt, 3308 &txq->doorbell_addr); 3309 if (rc) { 3310 DP_ERR(edev, "Start TXQ #%d failed %d\n", 3311 txq_index, rc); 3312 return rc; 3313 } 3314 3315 txq->hw_cons_ptr = 3316 &fp->sb_info->sb_virt->pi_array[TX_PI(tc)]; 3317 SET_FIELD(txq->tx_db.data.params, 3318 ETH_DB_DATA_DEST, DB_DEST_XCM); 3319 SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD, 3320 DB_AGG_CMD_SET); 3321 SET_FIELD(txq->tx_db.data.params, 3322 ETH_DB_DATA_AGG_VAL_SEL, 3323 DQ_XCM_ETH_TX_BD_PROD_CMD); 3324 3325 txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD; 3326 } 3327 } 3328 3329 /* Prepare and send the vport enable */ 3330 memset(&vport_update_params, 0, sizeof(vport_update_params)); 3331 vport_update_params.vport_id = start.vport_id; 3332 vport_update_params.update_vport_active_flg = 1; 3333 vport_update_params.vport_active_flg = 1; 3334 3335 if ((qed_info->mf_mode == QED_MF_NPAR || pci_num_vf(edev->pdev)) && 3336 qed_info->tx_switching) { 3337 vport_update_params.update_tx_switching_flg = 1; 3338 vport_update_params.tx_switching_flg = 1; 3339 } 3340 3341 /* Fill struct with RSS params */ 3342 if (QEDE_RSS_CNT(edev) > 1) { 3343 vport_update_params.update_rss_flg = 1; 3344 3345 /* Need to validate current RSS config uses valid entries */ 3346 for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) { 3347 if (edev->rss_params.rss_ind_table[i] >= 3348 edev->num_rss) { 3349 reset_rss_indir = true; 3350 break; 3351 } 3352 } 3353 3354 if (!(edev->rss_params_inited & QEDE_RSS_INDIR_INITED) || 3355 reset_rss_indir) { 3356 u16 val; 3357 3358 for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) { 3359 u16 indir_val; 3360 3361 val = QEDE_RSS_CNT(edev); 3362 indir_val = ethtool_rxfh_indir_default(i, val); 3363 edev->rss_params.rss_ind_table[i] = indir_val; 3364 } 3365 edev->rss_params_inited |= QEDE_RSS_INDIR_INITED; 3366 } 3367 3368 if (!(edev->rss_params_inited & QEDE_RSS_KEY_INITED)) { 3369 netdev_rss_key_fill(edev->rss_params.rss_key, 3370 sizeof(edev->rss_params.rss_key)); 3371 edev->rss_params_inited |= QEDE_RSS_KEY_INITED; 3372 } 3373 3374 if (!(edev->rss_params_inited & QEDE_RSS_CAPS_INITED)) { 3375 edev->rss_params.rss_caps = QED_RSS_IPV4 | 3376 QED_RSS_IPV6 | 3377 QED_RSS_IPV4_TCP | 3378 QED_RSS_IPV6_TCP; 3379 edev->rss_params_inited |= QEDE_RSS_CAPS_INITED; 3380 } 3381 3382 memcpy(&vport_update_params.rss_params, &edev->rss_params, 3383 sizeof(vport_update_params.rss_params)); 3384 } else { 3385 memset(&vport_update_params.rss_params, 0, 3386 sizeof(vport_update_params.rss_params)); 3387 } 3388 3389 rc = edev->ops->vport_update(cdev, &vport_update_params); 3390 if (rc) { 3391 DP_ERR(edev, "Update V-PORT failed %d\n", rc); 3392 return rc; 3393 } 3394 3395 return 0; 3396 } 3397 3398 static int qede_set_mcast_rx_mac(struct qede_dev *edev, 3399 enum qed_filter_xcast_params_type opcode, 3400 unsigned char *mac, int num_macs) 3401 { 3402 struct qed_filter_params filter_cmd; 3403 int i; 3404 3405 memset(&filter_cmd, 0, sizeof(filter_cmd)); 3406 filter_cmd.type = QED_FILTER_TYPE_MCAST; 3407 filter_cmd.filter.mcast.type = opcode; 3408 filter_cmd.filter.mcast.num = num_macs; 3409 3410 for (i = 0; i < num_macs; i++, mac += ETH_ALEN) 3411 ether_addr_copy(filter_cmd.filter.mcast.mac[i], mac); 3412 3413 return edev->ops->filter_config(edev->cdev, &filter_cmd); 3414 } 3415 3416 enum qede_unload_mode { 3417 QEDE_UNLOAD_NORMAL, 3418 }; 3419 3420 static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode) 3421 { 3422 struct qed_link_params link_params; 3423 int rc; 3424 3425 DP_INFO(edev, "Starting qede unload\n"); 3426 3427 mutex_lock(&edev->qede_lock); 3428 edev->state = QEDE_STATE_CLOSED; 3429 3430 /* Close OS Tx */ 3431 netif_tx_disable(edev->ndev); 3432 netif_carrier_off(edev->ndev); 3433 3434 /* Reset the link */ 3435 memset(&link_params, 0, sizeof(link_params)); 3436 link_params.link_up = false; 3437 edev->ops->common->set_link(edev->cdev, &link_params); 3438 rc = qede_stop_queues(edev); 3439 if (rc) { 3440 qede_sync_free_irqs(edev); 3441 goto out; 3442 } 3443 3444 DP_INFO(edev, "Stopped Queues\n"); 3445 3446 qede_vlan_mark_nonconfigured(edev); 3447 edev->ops->fastpath_stop(edev->cdev); 3448 3449 /* Release the interrupts */ 3450 qede_sync_free_irqs(edev); 3451 edev->ops->common->set_fp_int(edev->cdev, 0); 3452 3453 qede_napi_disable_remove(edev); 3454 3455 qede_free_mem_load(edev); 3456 qede_free_fp_array(edev); 3457 3458 out: 3459 mutex_unlock(&edev->qede_lock); 3460 DP_INFO(edev, "Ending qede unload\n"); 3461 } 3462 3463 enum qede_load_mode { 3464 QEDE_LOAD_NORMAL, 3465 QEDE_LOAD_RELOAD, 3466 }; 3467 3468 static int qede_load(struct qede_dev *edev, enum qede_load_mode mode) 3469 { 3470 struct qed_link_params link_params; 3471 struct qed_link_output link_output; 3472 int rc; 3473 3474 DP_INFO(edev, "Starting qede load\n"); 3475 3476 rc = qede_set_num_queues(edev); 3477 if (rc) 3478 goto err0; 3479 3480 rc = qede_alloc_fp_array(edev); 3481 if (rc) 3482 goto err0; 3483 3484 qede_init_fp(edev); 3485 3486 rc = qede_alloc_mem_load(edev); 3487 if (rc) 3488 goto err1; 3489 DP_INFO(edev, "Allocated %d RSS queues on %d TC/s\n", 3490 QEDE_RSS_CNT(edev), edev->num_tc); 3491 3492 rc = qede_set_real_num_queues(edev); 3493 if (rc) 3494 goto err2; 3495 3496 qede_napi_add_enable(edev); 3497 DP_INFO(edev, "Napi added and enabled\n"); 3498 3499 rc = qede_setup_irqs(edev); 3500 if (rc) 3501 goto err3; 3502 DP_INFO(edev, "Setup IRQs succeeded\n"); 3503 3504 rc = qede_start_queues(edev, mode != QEDE_LOAD_RELOAD); 3505 if (rc) 3506 goto err4; 3507 DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n"); 3508 3509 /* Add primary mac and set Rx filters */ 3510 ether_addr_copy(edev->primary_mac, edev->ndev->dev_addr); 3511 3512 mutex_lock(&edev->qede_lock); 3513 edev->state = QEDE_STATE_OPEN; 3514 mutex_unlock(&edev->qede_lock); 3515 3516 /* Program un-configured VLANs */ 3517 qede_configure_vlan_filters(edev); 3518 3519 /* Ask for link-up using current configuration */ 3520 memset(&link_params, 0, sizeof(link_params)); 3521 link_params.link_up = true; 3522 edev->ops->common->set_link(edev->cdev, &link_params); 3523 3524 /* Query whether link is already-up */ 3525 memset(&link_output, 0, sizeof(link_output)); 3526 edev->ops->common->get_link(edev->cdev, &link_output); 3527 qede_link_update(edev, &link_output); 3528 3529 DP_INFO(edev, "Ending successfully qede load\n"); 3530 3531 return 0; 3532 3533 err4: 3534 qede_sync_free_irqs(edev); 3535 memset(&edev->int_info.msix_cnt, 0, sizeof(struct qed_int_info)); 3536 err3: 3537 qede_napi_disable_remove(edev); 3538 err2: 3539 qede_free_mem_load(edev); 3540 err1: 3541 edev->ops->common->set_fp_int(edev->cdev, 0); 3542 qede_free_fp_array(edev); 3543 edev->num_rss = 0; 3544 err0: 3545 return rc; 3546 } 3547 3548 void qede_reload(struct qede_dev *edev, 3549 void (*func)(struct qede_dev *, union qede_reload_args *), 3550 union qede_reload_args *args) 3551 { 3552 qede_unload(edev, QEDE_UNLOAD_NORMAL); 3553 /* Call function handler to update parameters 3554 * needed for function load. 3555 */ 3556 if (func) 3557 func(edev, args); 3558 3559 qede_load(edev, QEDE_LOAD_RELOAD); 3560 3561 mutex_lock(&edev->qede_lock); 3562 qede_config_rx_mode(edev->ndev); 3563 mutex_unlock(&edev->qede_lock); 3564 } 3565 3566 /* called with rtnl_lock */ 3567 static int qede_open(struct net_device *ndev) 3568 { 3569 struct qede_dev *edev = netdev_priv(ndev); 3570 int rc; 3571 3572 netif_carrier_off(ndev); 3573 3574 edev->ops->common->set_power_state(edev->cdev, PCI_D0); 3575 3576 rc = qede_load(edev, QEDE_LOAD_NORMAL); 3577 3578 if (rc) 3579 return rc; 3580 3581 #ifdef CONFIG_QEDE_VXLAN 3582 vxlan_get_rx_port(ndev); 3583 #endif 3584 #ifdef CONFIG_QEDE_GENEVE 3585 geneve_get_rx_port(ndev); 3586 #endif 3587 return 0; 3588 } 3589 3590 static int qede_close(struct net_device *ndev) 3591 { 3592 struct qede_dev *edev = netdev_priv(ndev); 3593 3594 qede_unload(edev, QEDE_UNLOAD_NORMAL); 3595 3596 return 0; 3597 } 3598 3599 static void qede_link_update(void *dev, struct qed_link_output *link) 3600 { 3601 struct qede_dev *edev = dev; 3602 3603 if (!netif_running(edev->ndev)) { 3604 DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not running\n"); 3605 return; 3606 } 3607 3608 if (link->link_up) { 3609 if (!netif_carrier_ok(edev->ndev)) { 3610 DP_NOTICE(edev, "Link is up\n"); 3611 netif_tx_start_all_queues(edev->ndev); 3612 netif_carrier_on(edev->ndev); 3613 } 3614 } else { 3615 if (netif_carrier_ok(edev->ndev)) { 3616 DP_NOTICE(edev, "Link is down\n"); 3617 netif_tx_disable(edev->ndev); 3618 netif_carrier_off(edev->ndev); 3619 } 3620 } 3621 } 3622 3623 static int qede_set_mac_addr(struct net_device *ndev, void *p) 3624 { 3625 struct qede_dev *edev = netdev_priv(ndev); 3626 struct sockaddr *addr = p; 3627 int rc; 3628 3629 ASSERT_RTNL(); /* @@@TBD To be removed */ 3630 3631 DP_INFO(edev, "Set_mac_addr called\n"); 3632 3633 if (!is_valid_ether_addr(addr->sa_data)) { 3634 DP_NOTICE(edev, "The MAC address is not valid\n"); 3635 return -EFAULT; 3636 } 3637 3638 if (!edev->ops->check_mac(edev->cdev, addr->sa_data)) { 3639 DP_NOTICE(edev, "qed prevents setting MAC\n"); 3640 return -EINVAL; 3641 } 3642 3643 ether_addr_copy(ndev->dev_addr, addr->sa_data); 3644 3645 if (!netif_running(ndev)) { 3646 DP_NOTICE(edev, "The device is currently down\n"); 3647 return 0; 3648 } 3649 3650 /* Remove the previous primary mac */ 3651 rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL, 3652 edev->primary_mac); 3653 if (rc) 3654 return rc; 3655 3656 /* Add MAC filter according to the new unicast HW MAC address */ 3657 ether_addr_copy(edev->primary_mac, ndev->dev_addr); 3658 return qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD, 3659 edev->primary_mac); 3660 } 3661 3662 static int 3663 qede_configure_mcast_filtering(struct net_device *ndev, 3664 enum qed_filter_rx_mode_type *accept_flags) 3665 { 3666 struct qede_dev *edev = netdev_priv(ndev); 3667 unsigned char *mc_macs, *temp; 3668 struct netdev_hw_addr *ha; 3669 int rc = 0, mc_count; 3670 size_t size; 3671 3672 size = 64 * ETH_ALEN; 3673 3674 mc_macs = kzalloc(size, GFP_KERNEL); 3675 if (!mc_macs) { 3676 DP_NOTICE(edev, 3677 "Failed to allocate memory for multicast MACs\n"); 3678 rc = -ENOMEM; 3679 goto exit; 3680 } 3681 3682 temp = mc_macs; 3683 3684 /* Remove all previously configured MAC filters */ 3685 rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL, 3686 mc_macs, 1); 3687 if (rc) 3688 goto exit; 3689 3690 netif_addr_lock_bh(ndev); 3691 3692 mc_count = netdev_mc_count(ndev); 3693 if (mc_count < 64) { 3694 netdev_for_each_mc_addr(ha, ndev) { 3695 ether_addr_copy(temp, ha->addr); 3696 temp += ETH_ALEN; 3697 } 3698 } 3699 3700 netif_addr_unlock_bh(ndev); 3701 3702 /* Check for all multicast @@@TBD resource allocation */ 3703 if ((ndev->flags & IFF_ALLMULTI) || 3704 (mc_count > 64)) { 3705 if (*accept_flags == QED_FILTER_RX_MODE_TYPE_REGULAR) 3706 *accept_flags = QED_FILTER_RX_MODE_TYPE_MULTI_PROMISC; 3707 } else { 3708 /* Add all multicast MAC filters */ 3709 rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD, 3710 mc_macs, mc_count); 3711 } 3712 3713 exit: 3714 kfree(mc_macs); 3715 return rc; 3716 } 3717 3718 static void qede_set_rx_mode(struct net_device *ndev) 3719 { 3720 struct qede_dev *edev = netdev_priv(ndev); 3721 3722 DP_INFO(edev, "qede_set_rx_mode called\n"); 3723 3724 if (edev->state != QEDE_STATE_OPEN) { 3725 DP_INFO(edev, 3726 "qede_set_rx_mode called while interface is down\n"); 3727 } else { 3728 set_bit(QEDE_SP_RX_MODE, &edev->sp_flags); 3729 schedule_delayed_work(&edev->sp_task, 0); 3730 } 3731 } 3732 3733 /* Must be called with qede_lock held */ 3734 static void qede_config_rx_mode(struct net_device *ndev) 3735 { 3736 enum qed_filter_rx_mode_type accept_flags = QED_FILTER_TYPE_UCAST; 3737 struct qede_dev *edev = netdev_priv(ndev); 3738 struct qed_filter_params rx_mode; 3739 unsigned char *uc_macs, *temp; 3740 struct netdev_hw_addr *ha; 3741 int rc, uc_count; 3742 size_t size; 3743 3744 netif_addr_lock_bh(ndev); 3745 3746 uc_count = netdev_uc_count(ndev); 3747 size = uc_count * ETH_ALEN; 3748 3749 uc_macs = kzalloc(size, GFP_ATOMIC); 3750 if (!uc_macs) { 3751 DP_NOTICE(edev, "Failed to allocate memory for unicast MACs\n"); 3752 netif_addr_unlock_bh(ndev); 3753 return; 3754 } 3755 3756 temp = uc_macs; 3757 netdev_for_each_uc_addr(ha, ndev) { 3758 ether_addr_copy(temp, ha->addr); 3759 temp += ETH_ALEN; 3760 } 3761 3762 netif_addr_unlock_bh(ndev); 3763 3764 /* Configure the struct for the Rx mode */ 3765 memset(&rx_mode, 0, sizeof(struct qed_filter_params)); 3766 rx_mode.type = QED_FILTER_TYPE_RX_MODE; 3767 3768 /* Remove all previous unicast secondary macs and multicast macs 3769 * (configrue / leave the primary mac) 3770 */ 3771 rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_REPLACE, 3772 edev->primary_mac); 3773 if (rc) 3774 goto out; 3775 3776 /* Check for promiscuous */ 3777 if ((ndev->flags & IFF_PROMISC) || 3778 (uc_count > 15)) { /* @@@TBD resource allocation - 1 */ 3779 accept_flags = QED_FILTER_RX_MODE_TYPE_PROMISC; 3780 } else { 3781 /* Add MAC filters according to the unicast secondary macs */ 3782 int i; 3783 3784 temp = uc_macs; 3785 for (i = 0; i < uc_count; i++) { 3786 rc = qede_set_ucast_rx_mac(edev, 3787 QED_FILTER_XCAST_TYPE_ADD, 3788 temp); 3789 if (rc) 3790 goto out; 3791 3792 temp += ETH_ALEN; 3793 } 3794 3795 rc = qede_configure_mcast_filtering(ndev, &accept_flags); 3796 if (rc) 3797 goto out; 3798 } 3799 3800 /* take care of VLAN mode */ 3801 if (ndev->flags & IFF_PROMISC) { 3802 qede_config_accept_any_vlan(edev, true); 3803 } else if (!edev->non_configured_vlans) { 3804 /* It's possible that accept_any_vlan mode is set due to a 3805 * previous setting of IFF_PROMISC. If vlan credits are 3806 * sufficient, disable accept_any_vlan. 3807 */ 3808 qede_config_accept_any_vlan(edev, false); 3809 } 3810 3811 rx_mode.filter.accept_flags = accept_flags; 3812 edev->ops->filter_config(edev->cdev, &rx_mode); 3813 out: 3814 kfree(uc_macs); 3815 } 3816