1 /* 2 * Copyright (C) 2015-2017 Netronome Systems, Inc. 3 * 4 * This software is dual licensed under the GNU General License Version 2, 5 * June 1991 as shown in the file COPYING in the top-level directory of this 6 * source tree or the BSD 2-Clause License provided below. You have the 7 * option to license this software under the complete terms of either license. 8 * 9 * The BSD 2-Clause License: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * 1. Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * 2. Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 /* 35 * nfp_net_ethtool.c 36 * Netronome network device driver: ethtool support 37 * Authors: Jakub Kicinski <jakub.kicinski@netronome.com> 38 * Jason McMullan <jason.mcmullan@netronome.com> 39 * Rolf Neugebauer <rolf.neugebauer@netronome.com> 40 * Brad Petrus <brad.petrus@netronome.com> 41 */ 42 43 #include <linux/bitfield.h> 44 #include <linux/kernel.h> 45 #include <linux/netdevice.h> 46 #include <linux/etherdevice.h> 47 #include <linux/interrupt.h> 48 #include <linux/pci.h> 49 #include <linux/ethtool.h> 50 #include <linux/firmware.h> 51 52 #include "nfpcore/nfp.h" 53 #include "nfpcore/nfp_nsp.h" 54 #include "nfp_app.h" 55 #include "nfp_main.h" 56 #include "nfp_net_ctrl.h" 57 #include "nfp_net.h" 58 #include "nfp_port.h" 59 60 struct nfp_et_stat { 61 char name[ETH_GSTRING_LEN]; 62 int off; 63 }; 64 65 static const struct nfp_et_stat nfp_net_et_stats[] = { 66 /* Stats from the device */ 67 { "dev_rx_discards", NFP_NET_CFG_STATS_RX_DISCARDS }, 68 { "dev_rx_errors", NFP_NET_CFG_STATS_RX_ERRORS }, 69 { "dev_rx_bytes", NFP_NET_CFG_STATS_RX_OCTETS }, 70 { "dev_rx_uc_bytes", NFP_NET_CFG_STATS_RX_UC_OCTETS }, 71 { "dev_rx_mc_bytes", NFP_NET_CFG_STATS_RX_MC_OCTETS }, 72 { "dev_rx_bc_bytes", NFP_NET_CFG_STATS_RX_BC_OCTETS }, 73 { "dev_rx_pkts", NFP_NET_CFG_STATS_RX_FRAMES }, 74 { "dev_rx_mc_pkts", NFP_NET_CFG_STATS_RX_MC_FRAMES }, 75 { "dev_rx_bc_pkts", NFP_NET_CFG_STATS_RX_BC_FRAMES }, 76 77 { "dev_tx_discards", NFP_NET_CFG_STATS_TX_DISCARDS }, 78 { "dev_tx_errors", NFP_NET_CFG_STATS_TX_ERRORS }, 79 { "dev_tx_bytes", NFP_NET_CFG_STATS_TX_OCTETS }, 80 { "dev_tx_uc_bytes", NFP_NET_CFG_STATS_TX_UC_OCTETS }, 81 { "dev_tx_mc_bytes", NFP_NET_CFG_STATS_TX_MC_OCTETS }, 82 { "dev_tx_bc_bytes", NFP_NET_CFG_STATS_TX_BC_OCTETS }, 83 { "dev_tx_pkts", NFP_NET_CFG_STATS_TX_FRAMES }, 84 { "dev_tx_mc_pkts", NFP_NET_CFG_STATS_TX_MC_FRAMES }, 85 { "dev_tx_bc_pkts", NFP_NET_CFG_STATS_TX_BC_FRAMES }, 86 87 { "bpf_pass_pkts", NFP_NET_CFG_STATS_APP0_FRAMES }, 88 { "bpf_pass_bytes", NFP_NET_CFG_STATS_APP0_BYTES }, 89 /* see comments in outro functions in nfp_bpf_jit.c to find out 90 * how different BPF modes use app-specific counters 91 */ 92 { "bpf_app1_pkts", NFP_NET_CFG_STATS_APP1_FRAMES }, 93 { "bpf_app1_bytes", NFP_NET_CFG_STATS_APP1_BYTES }, 94 { "bpf_app2_pkts", NFP_NET_CFG_STATS_APP2_FRAMES }, 95 { "bpf_app2_bytes", NFP_NET_CFG_STATS_APP2_BYTES }, 96 { "bpf_app3_pkts", NFP_NET_CFG_STATS_APP3_FRAMES }, 97 { "bpf_app3_bytes", NFP_NET_CFG_STATS_APP3_BYTES }, 98 }; 99 100 static const struct nfp_et_stat nfp_mac_et_stats[] = { 101 { "rx_octets", NFP_MAC_STATS_RX_IN_OCTETS, }, 102 { "rx_frame_too_long_errors", 103 NFP_MAC_STATS_RX_FRAME_TOO_LONG_ERRORS, }, 104 { "rx_range_length_errors", NFP_MAC_STATS_RX_RANGE_LENGTH_ERRORS, }, 105 { "rx_vlan_received_ok", NFP_MAC_STATS_RX_VLAN_RECEIVED_OK, }, 106 { "rx_errors", NFP_MAC_STATS_RX_IN_ERRORS, }, 107 { "rx_broadcast_pkts", NFP_MAC_STATS_RX_IN_BROADCAST_PKTS, }, 108 { "rx_drop_events", NFP_MAC_STATS_RX_DROP_EVENTS, }, 109 { "rx_alignment_errors", NFP_MAC_STATS_RX_ALIGNMENT_ERRORS, }, 110 { "rx_pause_mac_ctrl_frames", 111 NFP_MAC_STATS_RX_PAUSE_MAC_CTRL_FRAMES, }, 112 { "rx_frames_received_ok", NFP_MAC_STATS_RX_FRAMES_RECEIVED_OK, }, 113 { "rx_frame_check_sequence_errors", 114 NFP_MAC_STATS_RX_FRAME_CHECK_SEQUENCE_ERRORS, }, 115 { "rx_unicast_pkts", NFP_MAC_STATS_RX_UNICAST_PKTS, }, 116 { "rx_multicast_pkts", NFP_MAC_STATS_RX_MULTICAST_PKTS, }, 117 { "rx_pkts", NFP_MAC_STATS_RX_PKTS, }, 118 { "rx_undersize_pkts", NFP_MAC_STATS_RX_UNDERSIZE_PKTS, }, 119 { "rx_pkts_64_octets", NFP_MAC_STATS_RX_PKTS_64_OCTETS, }, 120 { "rx_pkts_65_to_127_octets", 121 NFP_MAC_STATS_RX_PKTS_65_TO_127_OCTETS, }, 122 { "rx_pkts_128_to_255_octets", 123 NFP_MAC_STATS_RX_PKTS_128_TO_255_OCTETS, }, 124 { "rx_pkts_256_to_511_octets", 125 NFP_MAC_STATS_RX_PKTS_256_TO_511_OCTETS, }, 126 { "rx_pkts_512_to_1023_octets", 127 NFP_MAC_STATS_RX_PKTS_512_TO_1023_OCTETS, }, 128 { "rx_pkts_1024_to_1518_octets", 129 NFP_MAC_STATS_RX_PKTS_1024_TO_1518_OCTETS, }, 130 { "rx_pkts_1519_to_max_octets", 131 NFP_MAC_STATS_RX_PKTS_1519_TO_MAX_OCTETS, }, 132 { "rx_jabbers", NFP_MAC_STATS_RX_JABBERS, }, 133 { "rx_fragments", NFP_MAC_STATS_RX_FRAGMENTS, }, 134 { "rx_oversize_pkts", NFP_MAC_STATS_RX_OVERSIZE_PKTS, }, 135 { "rx_pause_frames_class0", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS0, }, 136 { "rx_pause_frames_class1", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS1, }, 137 { "rx_pause_frames_class2", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS2, }, 138 { "rx_pause_frames_class3", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS3, }, 139 { "rx_pause_frames_class4", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS4, }, 140 { "rx_pause_frames_class5", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS5, }, 141 { "rx_pause_frames_class6", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS6, }, 142 { "rx_pause_frames_class7", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS7, }, 143 { "rx_mac_ctrl_frames_received", 144 NFP_MAC_STATS_RX_MAC_CTRL_FRAMES_RECEIVED, }, 145 { "rx_mac_head_drop", NFP_MAC_STATS_RX_MAC_HEAD_DROP, }, 146 { "tx_queue_drop", NFP_MAC_STATS_TX_QUEUE_DROP, }, 147 { "tx_octets", NFP_MAC_STATS_TX_OUT_OCTETS, }, 148 { "tx_vlan_transmitted_ok", NFP_MAC_STATS_TX_VLAN_TRANSMITTED_OK, }, 149 { "tx_errors", NFP_MAC_STATS_TX_OUT_ERRORS, }, 150 { "tx_broadcast_pkts", NFP_MAC_STATS_TX_BROADCAST_PKTS, }, 151 { "tx_pause_mac_ctrl_frames", 152 NFP_MAC_STATS_TX_PAUSE_MAC_CTRL_FRAMES, }, 153 { "tx_frames_transmitted_ok", 154 NFP_MAC_STATS_TX_FRAMES_TRANSMITTED_OK, }, 155 { "tx_unicast_pkts", NFP_MAC_STATS_TX_UNICAST_PKTS, }, 156 { "tx_multicast_pkts", NFP_MAC_STATS_TX_MULTICAST_PKTS, }, 157 { "tx_pkts_64_octets", NFP_MAC_STATS_TX_PKTS_64_OCTETS, }, 158 { "tx_pkts_65_to_127_octets", 159 NFP_MAC_STATS_TX_PKTS_65_TO_127_OCTETS, }, 160 { "tx_pkts_128_to_255_octets", 161 NFP_MAC_STATS_TX_PKTS_128_TO_255_OCTETS, }, 162 { "tx_pkts_256_to_511_octets", 163 NFP_MAC_STATS_TX_PKTS_256_TO_511_OCTETS, }, 164 { "tx_pkts_512_to_1023_octets", 165 NFP_MAC_STATS_TX_PKTS_512_TO_1023_OCTETS, }, 166 { "tx_pkts_1024_to_1518_octets", 167 NFP_MAC_STATS_TX_PKTS_1024_TO_1518_OCTETS, }, 168 { "tx_pkts_1519_to_max_octets", 169 NFP_MAC_STATS_TX_PKTS_1519_TO_MAX_OCTETS, }, 170 { "tx_pause_frames_class0", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS0, }, 171 { "tx_pause_frames_class1", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS1, }, 172 { "tx_pause_frames_class2", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS2, }, 173 { "tx_pause_frames_class3", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS3, }, 174 { "tx_pause_frames_class4", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS4, }, 175 { "tx_pause_frames_class5", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS5, }, 176 { "tx_pause_frames_class6", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS6, }, 177 { "tx_pause_frames_class7", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS7, }, 178 }; 179 180 #define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats) 181 #define NN_ET_SWITCH_STATS_LEN 9 182 #define NN_RVEC_GATHER_STATS 9 183 #define NN_RVEC_PER_Q_STATS 3 184 185 static void nfp_net_get_nspinfo(struct nfp_app *app, char *version) 186 { 187 struct nfp_nsp *nsp; 188 189 if (!app) 190 return; 191 192 nsp = nfp_nsp_open(app->cpp); 193 if (IS_ERR(nsp)) 194 return; 195 196 snprintf(version, ETHTOOL_FWVERS_LEN, "%hu.%hu", 197 nfp_nsp_get_abi_ver_major(nsp), 198 nfp_nsp_get_abi_ver_minor(nsp)); 199 200 nfp_nsp_close(nsp); 201 } 202 203 static void 204 nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev, 205 const char *vnic_version, struct ethtool_drvinfo *drvinfo) 206 { 207 char nsp_version[ETHTOOL_FWVERS_LEN] = {}; 208 209 strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver)); 210 strlcpy(drvinfo->version, nfp_driver_version, sizeof(drvinfo->version)); 211 212 nfp_net_get_nspinfo(app, nsp_version); 213 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), 214 "%s %s %s %s", vnic_version, nsp_version, 215 nfp_app_mip_name(app), nfp_app_name(app)); 216 } 217 218 static void 219 nfp_net_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 220 { 221 char vnic_version[ETHTOOL_FWVERS_LEN] = {}; 222 struct nfp_net *nn = netdev_priv(netdev); 223 224 snprintf(vnic_version, sizeof(vnic_version), "%d.%d.%d.%d", 225 nn->fw_ver.resv, nn->fw_ver.class, 226 nn->fw_ver.major, nn->fw_ver.minor); 227 strlcpy(drvinfo->bus_info, pci_name(nn->pdev), 228 sizeof(drvinfo->bus_info)); 229 230 nfp_get_drvinfo(nn->app, nn->pdev, vnic_version, drvinfo); 231 } 232 233 static void 234 nfp_app_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 235 { 236 struct nfp_app *app = nfp_app_from_netdev(netdev); 237 238 strlcpy(drvinfo->bus_info, pci_name(app->pdev), 239 sizeof(drvinfo->bus_info)); 240 nfp_get_drvinfo(app, app->pdev, "*", drvinfo); 241 } 242 243 static void 244 nfp_net_set_fec_link_mode(struct nfp_eth_table_port *eth_port, 245 struct ethtool_link_ksettings *c) 246 { 247 unsigned int modes; 248 249 ethtool_link_ksettings_add_link_mode(c, supported, FEC_NONE); 250 if (!nfp_eth_can_support_fec(eth_port)) { 251 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_NONE); 252 return; 253 } 254 255 modes = nfp_eth_supported_fec_modes(eth_port); 256 if (modes & NFP_FEC_BASER) { 257 ethtool_link_ksettings_add_link_mode(c, supported, FEC_BASER); 258 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_BASER); 259 } 260 261 if (modes & NFP_FEC_REED_SOLOMON) { 262 ethtool_link_ksettings_add_link_mode(c, supported, FEC_RS); 263 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_RS); 264 } 265 } 266 267 /** 268 * nfp_net_get_link_ksettings - Get Link Speed settings 269 * @netdev: network interface device structure 270 * @cmd: ethtool command 271 * 272 * Reports speed settings based on info in the BAR provided by the fw. 273 */ 274 static int 275 nfp_net_get_link_ksettings(struct net_device *netdev, 276 struct ethtool_link_ksettings *cmd) 277 { 278 static const u32 ls_to_ethtool[] = { 279 [NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = 0, 280 [NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = SPEED_UNKNOWN, 281 [NFP_NET_CFG_STS_LINK_RATE_1G] = SPEED_1000, 282 [NFP_NET_CFG_STS_LINK_RATE_10G] = SPEED_10000, 283 [NFP_NET_CFG_STS_LINK_RATE_25G] = SPEED_25000, 284 [NFP_NET_CFG_STS_LINK_RATE_40G] = SPEED_40000, 285 [NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000, 286 [NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000, 287 }; 288 struct nfp_eth_table_port *eth_port; 289 struct nfp_port *port; 290 struct nfp_net *nn; 291 u32 sts, ls; 292 293 /* Init to unknowns */ 294 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 295 cmd->base.port = PORT_OTHER; 296 cmd->base.speed = SPEED_UNKNOWN; 297 cmd->base.duplex = DUPLEX_UNKNOWN; 298 299 port = nfp_port_from_netdev(netdev); 300 eth_port = nfp_port_get_eth_port(port); 301 if (eth_port) { 302 cmd->base.autoneg = eth_port->aneg != NFP_ANEG_DISABLED ? 303 AUTONEG_ENABLE : AUTONEG_DISABLE; 304 nfp_net_set_fec_link_mode(eth_port, cmd); 305 } 306 307 if (!netif_carrier_ok(netdev)) 308 return 0; 309 310 /* Use link speed from ETH table if available, otherwise try the BAR */ 311 if (eth_port) { 312 cmd->base.port = eth_port->port_type; 313 cmd->base.speed = eth_port->speed; 314 cmd->base.duplex = DUPLEX_FULL; 315 return 0; 316 } 317 318 if (!nfp_netdev_is_nfp_net(netdev)) 319 return -EOPNOTSUPP; 320 nn = netdev_priv(netdev); 321 322 sts = nn_readl(nn, NFP_NET_CFG_STS); 323 324 ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts); 325 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED) 326 return -EOPNOTSUPP; 327 328 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNKNOWN || 329 ls >= ARRAY_SIZE(ls_to_ethtool)) 330 return 0; 331 332 cmd->base.speed = ls_to_ethtool[ls]; 333 cmd->base.duplex = DUPLEX_FULL; 334 335 return 0; 336 } 337 338 static int 339 nfp_net_set_link_ksettings(struct net_device *netdev, 340 const struct ethtool_link_ksettings *cmd) 341 { 342 struct nfp_eth_table_port *eth_port; 343 struct nfp_port *port; 344 struct nfp_nsp *nsp; 345 int err; 346 347 port = nfp_port_from_netdev(netdev); 348 eth_port = __nfp_port_get_eth_port(port); 349 if (!eth_port) 350 return -EOPNOTSUPP; 351 352 if (netif_running(netdev)) { 353 netdev_warn(netdev, "Changing settings not allowed on an active interface. It may cause the port to be disabled until driver reload.\n"); 354 return -EBUSY; 355 } 356 357 nsp = nfp_eth_config_start(port->app->cpp, eth_port->index); 358 if (IS_ERR(nsp)) 359 return PTR_ERR(nsp); 360 361 err = __nfp_eth_set_aneg(nsp, cmd->base.autoneg == AUTONEG_ENABLE ? 362 NFP_ANEG_AUTO : NFP_ANEG_DISABLED); 363 if (err) 364 goto err_bad_set; 365 if (cmd->base.speed != SPEED_UNKNOWN) { 366 u32 speed = cmd->base.speed / eth_port->lanes; 367 368 err = __nfp_eth_set_speed(nsp, speed); 369 if (err) 370 goto err_bad_set; 371 } 372 373 err = nfp_eth_config_commit_end(nsp); 374 if (err > 0) 375 return 0; /* no change */ 376 377 nfp_net_refresh_port_table(port); 378 379 return err; 380 381 err_bad_set: 382 nfp_eth_config_cleanup_end(nsp); 383 return err; 384 } 385 386 static void nfp_net_get_ringparam(struct net_device *netdev, 387 struct ethtool_ringparam *ring) 388 { 389 struct nfp_net *nn = netdev_priv(netdev); 390 391 ring->rx_max_pending = NFP_NET_MAX_RX_DESCS; 392 ring->tx_max_pending = NFP_NET_MAX_TX_DESCS; 393 ring->rx_pending = nn->dp.rxd_cnt; 394 ring->tx_pending = nn->dp.txd_cnt; 395 } 396 397 static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt) 398 { 399 struct nfp_net_dp *dp; 400 401 dp = nfp_net_clone_dp(nn); 402 if (!dp) 403 return -ENOMEM; 404 405 dp->rxd_cnt = rxd_cnt; 406 dp->txd_cnt = txd_cnt; 407 408 return nfp_net_ring_reconfig(nn, dp, NULL); 409 } 410 411 static int nfp_net_set_ringparam(struct net_device *netdev, 412 struct ethtool_ringparam *ring) 413 { 414 struct nfp_net *nn = netdev_priv(netdev); 415 u32 rxd_cnt, txd_cnt; 416 417 /* We don't have separate queues/rings for small/large frames. */ 418 if (ring->rx_mini_pending || ring->rx_jumbo_pending) 419 return -EINVAL; 420 421 /* Round up to supported values */ 422 rxd_cnt = roundup_pow_of_two(ring->rx_pending); 423 txd_cnt = roundup_pow_of_two(ring->tx_pending); 424 425 if (rxd_cnt < NFP_NET_MIN_RX_DESCS || rxd_cnt > NFP_NET_MAX_RX_DESCS || 426 txd_cnt < NFP_NET_MIN_TX_DESCS || txd_cnt > NFP_NET_MAX_TX_DESCS) 427 return -EINVAL; 428 429 if (nn->dp.rxd_cnt == rxd_cnt && nn->dp.txd_cnt == txd_cnt) 430 return 0; 431 432 nn_dbg(nn, "Change ring size: RxQ %u->%u, TxQ %u->%u\n", 433 nn->dp.rxd_cnt, rxd_cnt, nn->dp.txd_cnt, txd_cnt); 434 435 return nfp_net_set_ring_size(nn, rxd_cnt, txd_cnt); 436 } 437 438 __printf(2, 3) u8 *nfp_pr_et(u8 *data, const char *fmt, ...) 439 { 440 va_list args; 441 442 va_start(args, fmt); 443 vsnprintf(data, ETH_GSTRING_LEN, fmt, args); 444 va_end(args); 445 446 return data + ETH_GSTRING_LEN; 447 } 448 449 static unsigned int nfp_vnic_get_sw_stats_count(struct net_device *netdev) 450 { 451 struct nfp_net *nn = netdev_priv(netdev); 452 453 return NN_RVEC_GATHER_STATS + nn->max_r_vecs * NN_RVEC_PER_Q_STATS; 454 } 455 456 static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data) 457 { 458 struct nfp_net *nn = netdev_priv(netdev); 459 int i; 460 461 for (i = 0; i < nn->max_r_vecs; i++) { 462 data = nfp_pr_et(data, "rvec_%u_rx_pkts", i); 463 data = nfp_pr_et(data, "rvec_%u_tx_pkts", i); 464 data = nfp_pr_et(data, "rvec_%u_tx_busy", i); 465 } 466 467 data = nfp_pr_et(data, "hw_rx_csum_ok"); 468 data = nfp_pr_et(data, "hw_rx_csum_inner_ok"); 469 data = nfp_pr_et(data, "hw_rx_csum_complete"); 470 data = nfp_pr_et(data, "hw_rx_csum_err"); 471 data = nfp_pr_et(data, "rx_replace_buf_alloc_fail"); 472 data = nfp_pr_et(data, "hw_tx_csum"); 473 data = nfp_pr_et(data, "hw_tx_inner_csum"); 474 data = nfp_pr_et(data, "tx_gather"); 475 data = nfp_pr_et(data, "tx_lso"); 476 477 return data; 478 } 479 480 static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data) 481 { 482 u64 gathered_stats[NN_RVEC_GATHER_STATS] = {}; 483 struct nfp_net *nn = netdev_priv(netdev); 484 u64 tmp[NN_RVEC_GATHER_STATS]; 485 unsigned int i, j; 486 487 for (i = 0; i < nn->max_r_vecs; i++) { 488 unsigned int start; 489 490 do { 491 start = u64_stats_fetch_begin(&nn->r_vecs[i].rx_sync); 492 data[0] = nn->r_vecs[i].rx_pkts; 493 tmp[0] = nn->r_vecs[i].hw_csum_rx_ok; 494 tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok; 495 tmp[2] = nn->r_vecs[i].hw_csum_rx_complete; 496 tmp[3] = nn->r_vecs[i].hw_csum_rx_error; 497 tmp[4] = nn->r_vecs[i].rx_replace_buf_alloc_fail; 498 } while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start)); 499 500 do { 501 start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync); 502 data[1] = nn->r_vecs[i].tx_pkts; 503 data[2] = nn->r_vecs[i].tx_busy; 504 tmp[5] = nn->r_vecs[i].hw_csum_tx; 505 tmp[6] = nn->r_vecs[i].hw_csum_tx_inner; 506 tmp[7] = nn->r_vecs[i].tx_gather; 507 tmp[8] = nn->r_vecs[i].tx_lso; 508 } while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start)); 509 510 data += NN_RVEC_PER_Q_STATS; 511 512 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 513 gathered_stats[j] += tmp[j]; 514 } 515 516 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 517 *data++ = gathered_stats[j]; 518 519 return data; 520 } 521 522 static unsigned int nfp_vnic_get_hw_stats_count(unsigned int num_vecs) 523 { 524 return NN_ET_GLOBAL_STATS_LEN + num_vecs * 4; 525 } 526 527 static u8 * 528 nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int num_vecs, bool repr) 529 { 530 int swap_off, i; 531 532 BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2); 533 /* If repr is true first add SWITCH_STATS_LEN and then subtract it 534 * effectively swapping the RX and TX statistics (giving us the RX 535 * and TX from perspective of the switch). 536 */ 537 swap_off = repr * NN_ET_SWITCH_STATS_LEN; 538 539 for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++) 540 data = nfp_pr_et(data, nfp_net_et_stats[i + swap_off].name); 541 542 for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++) 543 data = nfp_pr_et(data, nfp_net_et_stats[i - swap_off].name); 544 545 for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++) 546 data = nfp_pr_et(data, nfp_net_et_stats[i].name); 547 548 for (i = 0; i < num_vecs; i++) { 549 data = nfp_pr_et(data, "rxq_%u_pkts", i); 550 data = nfp_pr_et(data, "rxq_%u_bytes", i); 551 data = nfp_pr_et(data, "txq_%u_pkts", i); 552 data = nfp_pr_et(data, "txq_%u_bytes", i); 553 } 554 555 return data; 556 } 557 558 static u64 * 559 nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, unsigned int num_vecs) 560 { 561 unsigned int i; 562 563 for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) 564 *data++ = readq(mem + nfp_net_et_stats[i].off); 565 566 for (i = 0; i < num_vecs; i++) { 567 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i)); 568 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8); 569 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i)); 570 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8); 571 } 572 573 return data; 574 } 575 576 static unsigned int nfp_mac_get_stats_count(struct net_device *netdev) 577 { 578 struct nfp_port *port; 579 580 port = nfp_port_from_netdev(netdev); 581 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 582 return 0; 583 584 return ARRAY_SIZE(nfp_mac_et_stats); 585 } 586 587 static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data) 588 { 589 struct nfp_port *port; 590 unsigned int i; 591 592 port = nfp_port_from_netdev(netdev); 593 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 594 return data; 595 596 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 597 data = nfp_pr_et(data, "mac.%s", nfp_mac_et_stats[i].name); 598 599 return data; 600 } 601 602 static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data) 603 { 604 struct nfp_port *port; 605 unsigned int i; 606 607 port = nfp_port_from_netdev(netdev); 608 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 609 return data; 610 611 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 612 *data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off); 613 614 return data; 615 } 616 617 static void nfp_net_get_strings(struct net_device *netdev, 618 u32 stringset, u8 *data) 619 { 620 struct nfp_net *nn = netdev_priv(netdev); 621 622 switch (stringset) { 623 case ETH_SS_STATS: 624 data = nfp_vnic_get_sw_stats_strings(netdev, data); 625 data = nfp_vnic_get_hw_stats_strings(data, nn->max_r_vecs, 626 false); 627 data = nfp_mac_get_stats_strings(netdev, data); 628 data = nfp_app_port_get_stats_strings(nn->port, data); 629 break; 630 } 631 } 632 633 static void 634 nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 635 u64 *data) 636 { 637 struct nfp_net *nn = netdev_priv(netdev); 638 639 data = nfp_vnic_get_sw_stats(netdev, data); 640 data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar, nn->max_r_vecs); 641 data = nfp_mac_get_stats(netdev, data); 642 data = nfp_app_port_get_stats(nn->port, data); 643 } 644 645 static int nfp_net_get_sset_count(struct net_device *netdev, int sset) 646 { 647 struct nfp_net *nn = netdev_priv(netdev); 648 649 switch (sset) { 650 case ETH_SS_STATS: 651 return nfp_vnic_get_sw_stats_count(netdev) + 652 nfp_vnic_get_hw_stats_count(nn->max_r_vecs) + 653 nfp_mac_get_stats_count(netdev) + 654 nfp_app_port_get_stats_count(nn->port); 655 default: 656 return -EOPNOTSUPP; 657 } 658 } 659 660 static void nfp_port_get_strings(struct net_device *netdev, 661 u32 stringset, u8 *data) 662 { 663 struct nfp_port *port = nfp_port_from_netdev(netdev); 664 665 switch (stringset) { 666 case ETH_SS_STATS: 667 if (nfp_port_is_vnic(port)) 668 data = nfp_vnic_get_hw_stats_strings(data, 0, true); 669 else 670 data = nfp_mac_get_stats_strings(netdev, data); 671 data = nfp_app_port_get_stats_strings(port, data); 672 break; 673 } 674 } 675 676 static void 677 nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 678 u64 *data) 679 { 680 struct nfp_port *port = nfp_port_from_netdev(netdev); 681 682 if (nfp_port_is_vnic(port)) 683 data = nfp_vnic_get_hw_stats(data, port->vnic, 0); 684 else 685 data = nfp_mac_get_stats(netdev, data); 686 data = nfp_app_port_get_stats(port, data); 687 } 688 689 static int nfp_port_get_sset_count(struct net_device *netdev, int sset) 690 { 691 struct nfp_port *port = nfp_port_from_netdev(netdev); 692 unsigned int count; 693 694 switch (sset) { 695 case ETH_SS_STATS: 696 if (nfp_port_is_vnic(port)) 697 count = nfp_vnic_get_hw_stats_count(0); 698 else 699 count = nfp_mac_get_stats_count(netdev); 700 count += nfp_app_port_get_stats_count(port); 701 return count; 702 default: 703 return -EOPNOTSUPP; 704 } 705 } 706 707 static int nfp_port_fec_ethtool_to_nsp(u32 fec) 708 { 709 switch (fec) { 710 case ETHTOOL_FEC_AUTO: 711 return NFP_FEC_AUTO_BIT; 712 case ETHTOOL_FEC_OFF: 713 return NFP_FEC_DISABLED_BIT; 714 case ETHTOOL_FEC_RS: 715 return NFP_FEC_REED_SOLOMON_BIT; 716 case ETHTOOL_FEC_BASER: 717 return NFP_FEC_BASER_BIT; 718 default: 719 /* NSP only supports a single mode at a time */ 720 return -EOPNOTSUPP; 721 } 722 } 723 724 static u32 nfp_port_fec_nsp_to_ethtool(u32 fec) 725 { 726 u32 result = 0; 727 728 if (fec & NFP_FEC_AUTO) 729 result |= ETHTOOL_FEC_AUTO; 730 if (fec & NFP_FEC_BASER) 731 result |= ETHTOOL_FEC_BASER; 732 if (fec & NFP_FEC_REED_SOLOMON) 733 result |= ETHTOOL_FEC_RS; 734 if (fec & NFP_FEC_DISABLED) 735 result |= ETHTOOL_FEC_OFF; 736 737 return result ?: ETHTOOL_FEC_NONE; 738 } 739 740 static int 741 nfp_port_get_fecparam(struct net_device *netdev, 742 struct ethtool_fecparam *param) 743 { 744 struct nfp_eth_table_port *eth_port; 745 struct nfp_port *port; 746 747 param->active_fec = ETHTOOL_FEC_NONE_BIT; 748 param->fec = ETHTOOL_FEC_NONE_BIT; 749 750 port = nfp_port_from_netdev(netdev); 751 eth_port = nfp_port_get_eth_port(port); 752 if (!eth_port) 753 return -EOPNOTSUPP; 754 755 if (!nfp_eth_can_support_fec(eth_port)) 756 return 0; 757 758 param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported); 759 param->active_fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec); 760 761 return 0; 762 } 763 764 static int 765 nfp_port_set_fecparam(struct net_device *netdev, 766 struct ethtool_fecparam *param) 767 { 768 struct nfp_eth_table_port *eth_port; 769 struct nfp_port *port; 770 int err, fec; 771 772 port = nfp_port_from_netdev(netdev); 773 eth_port = nfp_port_get_eth_port(port); 774 if (!eth_port) 775 return -EOPNOTSUPP; 776 777 if (!nfp_eth_can_support_fec(eth_port)) 778 return -EOPNOTSUPP; 779 780 fec = nfp_port_fec_ethtool_to_nsp(param->fec); 781 if (fec < 0) 782 return fec; 783 784 err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec); 785 if (!err) 786 /* Only refresh if we did something */ 787 nfp_net_refresh_port_table(port); 788 789 return err < 0 ? err : 0; 790 } 791 792 /* RX network flow classification (RSS, filters, etc) 793 */ 794 static u32 ethtool_flow_to_nfp_flag(u32 flow_type) 795 { 796 static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = { 797 [TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP, 798 [TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP, 799 [UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP, 800 [UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP, 801 [IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4, 802 [IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6, 803 }; 804 805 if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp)) 806 return 0; 807 808 return xlate_ethtool_to_nfp[flow_type]; 809 } 810 811 static int nfp_net_get_rss_hash_opts(struct nfp_net *nn, 812 struct ethtool_rxnfc *cmd) 813 { 814 u32 nfp_rss_flag; 815 816 cmd->data = 0; 817 818 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 819 return -EOPNOTSUPP; 820 821 nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type); 822 if (!nfp_rss_flag) 823 return -EINVAL; 824 825 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 826 if (nn->rss_cfg & nfp_rss_flag) 827 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 828 829 return 0; 830 } 831 832 static int nfp_net_get_rxnfc(struct net_device *netdev, 833 struct ethtool_rxnfc *cmd, u32 *rule_locs) 834 { 835 struct nfp_net *nn = netdev_priv(netdev); 836 837 switch (cmd->cmd) { 838 case ETHTOOL_GRXRINGS: 839 cmd->data = nn->dp.num_rx_rings; 840 return 0; 841 case ETHTOOL_GRXFH: 842 return nfp_net_get_rss_hash_opts(nn, cmd); 843 default: 844 return -EOPNOTSUPP; 845 } 846 } 847 848 static int nfp_net_set_rss_hash_opt(struct nfp_net *nn, 849 struct ethtool_rxnfc *nfc) 850 { 851 u32 new_rss_cfg = nn->rss_cfg; 852 u32 nfp_rss_flag; 853 int err; 854 855 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 856 return -EOPNOTSUPP; 857 858 /* RSS only supports IP SA/DA and L4 src/dst ports */ 859 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 860 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 861 return -EINVAL; 862 863 /* We need at least the IP SA/DA fields for hashing */ 864 if (!(nfc->data & RXH_IP_SRC) || 865 !(nfc->data & RXH_IP_DST)) 866 return -EINVAL; 867 868 nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type); 869 if (!nfp_rss_flag) 870 return -EINVAL; 871 872 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 873 case 0: 874 new_rss_cfg &= ~nfp_rss_flag; 875 break; 876 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 877 new_rss_cfg |= nfp_rss_flag; 878 break; 879 default: 880 return -EINVAL; 881 } 882 883 new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc); 884 new_rss_cfg |= NFP_NET_CFG_RSS_MASK; 885 886 if (new_rss_cfg == nn->rss_cfg) 887 return 0; 888 889 writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL); 890 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 891 if (err) 892 return err; 893 894 nn->rss_cfg = new_rss_cfg; 895 896 nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg); 897 return 0; 898 } 899 900 static int nfp_net_set_rxnfc(struct net_device *netdev, 901 struct ethtool_rxnfc *cmd) 902 { 903 struct nfp_net *nn = netdev_priv(netdev); 904 905 switch (cmd->cmd) { 906 case ETHTOOL_SRXFH: 907 return nfp_net_set_rss_hash_opt(nn, cmd); 908 default: 909 return -EOPNOTSUPP; 910 } 911 } 912 913 static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev) 914 { 915 struct nfp_net *nn = netdev_priv(netdev); 916 917 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 918 return 0; 919 920 return ARRAY_SIZE(nn->rss_itbl); 921 } 922 923 static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev) 924 { 925 struct nfp_net *nn = netdev_priv(netdev); 926 927 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 928 return -EOPNOTSUPP; 929 930 return nfp_net_rss_key_sz(nn); 931 } 932 933 static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, 934 u8 *hfunc) 935 { 936 struct nfp_net *nn = netdev_priv(netdev); 937 int i; 938 939 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 940 return -EOPNOTSUPP; 941 942 if (indir) 943 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 944 indir[i] = nn->rss_itbl[i]; 945 if (key) 946 memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn)); 947 if (hfunc) { 948 *hfunc = nn->rss_hfunc; 949 if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT) 950 *hfunc = ETH_RSS_HASH_UNKNOWN; 951 } 952 953 return 0; 954 } 955 956 static int nfp_net_set_rxfh(struct net_device *netdev, 957 const u32 *indir, const u8 *key, 958 const u8 hfunc) 959 { 960 struct nfp_net *nn = netdev_priv(netdev); 961 int i; 962 963 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) || 964 !(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc)) 965 return -EOPNOTSUPP; 966 967 if (!key && !indir) 968 return 0; 969 970 if (key) { 971 memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn)); 972 nfp_net_rss_write_key(nn); 973 } 974 if (indir) { 975 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 976 nn->rss_itbl[i] = indir[i]; 977 978 nfp_net_rss_write_itbl(nn); 979 } 980 981 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 982 } 983 984 /* Dump BAR registers 985 */ 986 static int nfp_net_get_regs_len(struct net_device *netdev) 987 { 988 return NFP_NET_CFG_BAR_SZ; 989 } 990 991 static void nfp_net_get_regs(struct net_device *netdev, 992 struct ethtool_regs *regs, void *p) 993 { 994 struct nfp_net *nn = netdev_priv(netdev); 995 u32 *regs_buf = p; 996 int i; 997 998 regs->version = nn_readl(nn, NFP_NET_CFG_VERSION); 999 1000 for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++) 1001 regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32))); 1002 } 1003 1004 static int nfp_net_get_coalesce(struct net_device *netdev, 1005 struct ethtool_coalesce *ec) 1006 { 1007 struct nfp_net *nn = netdev_priv(netdev); 1008 1009 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1010 return -EINVAL; 1011 1012 ec->rx_coalesce_usecs = nn->rx_coalesce_usecs; 1013 ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames; 1014 ec->tx_coalesce_usecs = nn->tx_coalesce_usecs; 1015 ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames; 1016 1017 return 0; 1018 } 1019 1020 /* Other debug dumps 1021 */ 1022 static int 1023 nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer) 1024 { 1025 struct nfp_resource *res; 1026 int ret; 1027 1028 if (!app) 1029 return -EOPNOTSUPP; 1030 1031 dump->version = 1; 1032 dump->flag = NFP_DUMP_NSP_DIAG; 1033 1034 res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG); 1035 if (IS_ERR(res)) 1036 return PTR_ERR(res); 1037 1038 if (buffer) { 1039 if (dump->len != nfp_resource_size(res)) { 1040 ret = -EINVAL; 1041 goto exit_release; 1042 } 1043 1044 ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res), 1045 nfp_resource_address(res), 1046 buffer, dump->len); 1047 if (ret != dump->len) 1048 ret = ret < 0 ? ret : -EIO; 1049 else 1050 ret = 0; 1051 } else { 1052 dump->len = nfp_resource_size(res); 1053 ret = 0; 1054 } 1055 exit_release: 1056 nfp_resource_release(res); 1057 1058 return ret; 1059 } 1060 1061 /* Set the dump flag/level. Calculate the dump length for flag > 0 only (new TLV 1062 * based dumps), since flag 0 (default) calculates the length in 1063 * nfp_app_get_dump_flag(), and we need to support triggering a level 0 dump 1064 * without setting the flag first, for backward compatibility. 1065 */ 1066 static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val) 1067 { 1068 struct nfp_app *app = nfp_app_from_netdev(netdev); 1069 s64 len; 1070 1071 if (!app) 1072 return -EOPNOTSUPP; 1073 1074 if (val->flag == NFP_DUMP_NSP_DIAG) { 1075 app->pf->dump_flag = val->flag; 1076 return 0; 1077 } 1078 1079 if (!app->pf->dumpspec) 1080 return -EOPNOTSUPP; 1081 1082 len = nfp_net_dump_calculate_size(app->pf, app->pf->dumpspec, 1083 val->flag); 1084 if (len < 0) 1085 return len; 1086 1087 app->pf->dump_flag = val->flag; 1088 app->pf->dump_len = len; 1089 1090 return 0; 1091 } 1092 1093 static int 1094 nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump) 1095 { 1096 struct nfp_app *app = nfp_app_from_netdev(netdev); 1097 1098 if (!app) 1099 return -EOPNOTSUPP; 1100 1101 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1102 return nfp_dump_nsp_diag(app, dump, NULL); 1103 1104 dump->flag = app->pf->dump_flag; 1105 dump->len = app->pf->dump_len; 1106 1107 return 0; 1108 } 1109 1110 static int 1111 nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump, 1112 void *buffer) 1113 { 1114 struct nfp_app *app = nfp_app_from_netdev(netdev); 1115 1116 if (!app) 1117 return -EOPNOTSUPP; 1118 1119 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1120 return nfp_dump_nsp_diag(app, dump, buffer); 1121 1122 dump->flag = app->pf->dump_flag; 1123 dump->len = app->pf->dump_len; 1124 1125 return nfp_net_dump_populate_buffer(app->pf, app->pf->dumpspec, dump, 1126 buffer); 1127 } 1128 1129 static int nfp_net_set_coalesce(struct net_device *netdev, 1130 struct ethtool_coalesce *ec) 1131 { 1132 struct nfp_net *nn = netdev_priv(netdev); 1133 unsigned int factor; 1134 1135 if (ec->rx_coalesce_usecs_irq || 1136 ec->rx_max_coalesced_frames_irq || 1137 ec->tx_coalesce_usecs_irq || 1138 ec->tx_max_coalesced_frames_irq || 1139 ec->stats_block_coalesce_usecs || 1140 ec->use_adaptive_rx_coalesce || 1141 ec->use_adaptive_tx_coalesce || 1142 ec->pkt_rate_low || 1143 ec->rx_coalesce_usecs_low || 1144 ec->rx_max_coalesced_frames_low || 1145 ec->tx_coalesce_usecs_low || 1146 ec->tx_max_coalesced_frames_low || 1147 ec->pkt_rate_high || 1148 ec->rx_coalesce_usecs_high || 1149 ec->rx_max_coalesced_frames_high || 1150 ec->tx_coalesce_usecs_high || 1151 ec->tx_max_coalesced_frames_high || 1152 ec->rate_sample_interval) 1153 return -EOPNOTSUPP; 1154 1155 /* Compute factor used to convert coalesce '_usecs' parameters to 1156 * ME timestamp ticks. There are 16 ME clock cycles for each timestamp 1157 * count. 1158 */ 1159 factor = nn->me_freq_mhz / 16; 1160 1161 /* Each pair of (usecs, max_frames) fields specifies that interrupts 1162 * should be coalesced until 1163 * (usecs > 0 && time_since_first_completion >= usecs) || 1164 * (max_frames > 0 && completed_frames >= max_frames) 1165 * 1166 * It is illegal to set both usecs and max_frames to zero as this would 1167 * cause interrupts to never be generated. To disable coalescing, set 1168 * usecs = 0 and max_frames = 1. 1169 * 1170 * Some implementations ignore the value of max_frames and use the 1171 * condition time_since_first_completion >= usecs 1172 */ 1173 1174 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1175 return -EINVAL; 1176 1177 /* ensure valid configuration */ 1178 if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames) 1179 return -EINVAL; 1180 1181 if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames) 1182 return -EINVAL; 1183 1184 if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1185 return -EINVAL; 1186 1187 if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1188 return -EINVAL; 1189 1190 if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1)) 1191 return -EINVAL; 1192 1193 if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1)) 1194 return -EINVAL; 1195 1196 /* configuration is valid */ 1197 nn->rx_coalesce_usecs = ec->rx_coalesce_usecs; 1198 nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames; 1199 nn->tx_coalesce_usecs = ec->tx_coalesce_usecs; 1200 nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames; 1201 1202 /* write configuration to device */ 1203 nfp_net_coalesce_write_cfg(nn); 1204 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD); 1205 } 1206 1207 static void nfp_net_get_channels(struct net_device *netdev, 1208 struct ethtool_channels *channel) 1209 { 1210 struct nfp_net *nn = netdev_priv(netdev); 1211 unsigned int num_tx_rings; 1212 1213 num_tx_rings = nn->dp.num_tx_rings; 1214 if (nn->dp.xdp_prog) 1215 num_tx_rings -= nn->dp.num_rx_rings; 1216 1217 channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs); 1218 channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs); 1219 channel->max_combined = min(channel->max_rx, channel->max_tx); 1220 channel->max_other = NFP_NET_NON_Q_VECTORS; 1221 channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings); 1222 channel->rx_count = nn->dp.num_rx_rings - channel->combined_count; 1223 channel->tx_count = num_tx_rings - channel->combined_count; 1224 channel->other_count = NFP_NET_NON_Q_VECTORS; 1225 } 1226 1227 static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx, 1228 unsigned int total_tx) 1229 { 1230 struct nfp_net_dp *dp; 1231 1232 dp = nfp_net_clone_dp(nn); 1233 if (!dp) 1234 return -ENOMEM; 1235 1236 dp->num_rx_rings = total_rx; 1237 dp->num_tx_rings = total_tx; 1238 /* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */ 1239 if (dp->xdp_prog) 1240 dp->num_tx_rings += total_rx; 1241 1242 return nfp_net_ring_reconfig(nn, dp, NULL); 1243 } 1244 1245 static int nfp_net_set_channels(struct net_device *netdev, 1246 struct ethtool_channels *channel) 1247 { 1248 struct nfp_net *nn = netdev_priv(netdev); 1249 unsigned int total_rx, total_tx; 1250 1251 /* Reject unsupported */ 1252 if (!channel->combined_count || 1253 channel->other_count != NFP_NET_NON_Q_VECTORS || 1254 (channel->rx_count && channel->tx_count)) 1255 return -EINVAL; 1256 1257 total_rx = channel->combined_count + channel->rx_count; 1258 total_tx = channel->combined_count + channel->tx_count; 1259 1260 if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) || 1261 total_tx > min(nn->max_tx_rings, nn->max_r_vecs)) 1262 return -EINVAL; 1263 1264 return nfp_net_set_num_rings(nn, total_rx, total_tx); 1265 } 1266 1267 static int 1268 nfp_net_flash_device(struct net_device *netdev, struct ethtool_flash *flash) 1269 { 1270 const struct firmware *fw; 1271 struct nfp_app *app; 1272 struct nfp_nsp *nsp; 1273 struct device *dev; 1274 int err; 1275 1276 if (flash->region != ETHTOOL_FLASH_ALL_REGIONS) 1277 return -EOPNOTSUPP; 1278 1279 app = nfp_app_from_netdev(netdev); 1280 if (!app) 1281 return -EOPNOTSUPP; 1282 1283 dev = &app->pdev->dev; 1284 1285 nsp = nfp_nsp_open(app->cpp); 1286 if (IS_ERR(nsp)) { 1287 err = PTR_ERR(nsp); 1288 dev_err(dev, "Failed to access the NSP: %d\n", err); 1289 return err; 1290 } 1291 1292 err = request_firmware_direct(&fw, flash->data, dev); 1293 if (err) 1294 goto exit_close_nsp; 1295 1296 dev_info(dev, "Please be patient while writing flash image: %s\n", 1297 flash->data); 1298 dev_hold(netdev); 1299 rtnl_unlock(); 1300 1301 err = nfp_nsp_write_flash(nsp, fw); 1302 if (err < 0) { 1303 dev_err(dev, "Flash write failed: %d\n", err); 1304 goto exit_rtnl_lock; 1305 } 1306 dev_info(dev, "Finished writing flash image\n"); 1307 1308 exit_rtnl_lock: 1309 rtnl_lock(); 1310 dev_put(netdev); 1311 release_firmware(fw); 1312 1313 exit_close_nsp: 1314 nfp_nsp_close(nsp); 1315 return err; 1316 } 1317 1318 static const struct ethtool_ops nfp_net_ethtool_ops = { 1319 .get_drvinfo = nfp_net_get_drvinfo, 1320 .get_link = ethtool_op_get_link, 1321 .get_ringparam = nfp_net_get_ringparam, 1322 .set_ringparam = nfp_net_set_ringparam, 1323 .get_strings = nfp_net_get_strings, 1324 .get_ethtool_stats = nfp_net_get_stats, 1325 .get_sset_count = nfp_net_get_sset_count, 1326 .get_rxnfc = nfp_net_get_rxnfc, 1327 .set_rxnfc = nfp_net_set_rxnfc, 1328 .flash_device = nfp_net_flash_device, 1329 .get_rxfh_indir_size = nfp_net_get_rxfh_indir_size, 1330 .get_rxfh_key_size = nfp_net_get_rxfh_key_size, 1331 .get_rxfh = nfp_net_get_rxfh, 1332 .set_rxfh = nfp_net_set_rxfh, 1333 .get_regs_len = nfp_net_get_regs_len, 1334 .get_regs = nfp_net_get_regs, 1335 .set_dump = nfp_app_set_dump, 1336 .get_dump_flag = nfp_app_get_dump_flag, 1337 .get_dump_data = nfp_app_get_dump_data, 1338 .get_coalesce = nfp_net_get_coalesce, 1339 .set_coalesce = nfp_net_set_coalesce, 1340 .get_channels = nfp_net_get_channels, 1341 .set_channels = nfp_net_set_channels, 1342 .get_link_ksettings = nfp_net_get_link_ksettings, 1343 .set_link_ksettings = nfp_net_set_link_ksettings, 1344 .get_fecparam = nfp_port_get_fecparam, 1345 .set_fecparam = nfp_port_set_fecparam, 1346 }; 1347 1348 const struct ethtool_ops nfp_port_ethtool_ops = { 1349 .get_drvinfo = nfp_app_get_drvinfo, 1350 .get_link = ethtool_op_get_link, 1351 .get_strings = nfp_port_get_strings, 1352 .get_ethtool_stats = nfp_port_get_stats, 1353 .get_sset_count = nfp_port_get_sset_count, 1354 .flash_device = nfp_net_flash_device, 1355 .set_dump = nfp_app_set_dump, 1356 .get_dump_flag = nfp_app_get_dump_flag, 1357 .get_dump_data = nfp_app_get_dump_data, 1358 .get_link_ksettings = nfp_net_get_link_ksettings, 1359 .set_link_ksettings = nfp_net_set_link_ksettings, 1360 .get_fecparam = nfp_port_get_fecparam, 1361 .set_fecparam = nfp_port_set_fecparam, 1362 }; 1363 1364 void nfp_net_set_ethtool_ops(struct net_device *netdev) 1365 { 1366 netdev->ethtool_ops = &nfp_net_ethtool_ops; 1367 } 1368