1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright 2017 6WIND S.A. 3 * Copyright 2017 Mellanox Technologies, Ltd 4 */ 5 6 #include <unistd.h> 7 8 #include <rte_flow.h> 9 #include <rte_flow_driver.h> 10 #include <rte_cycles.h> 11 12 #include "failsafe_private.h" 13 14 /** Print a message out of a flow error. */ 15 static int 16 fs_flow_complain(struct rte_flow_error *error) 17 { 18 static const char *const errstrlist[] = { 19 [RTE_FLOW_ERROR_TYPE_NONE] = "no error", 20 [RTE_FLOW_ERROR_TYPE_UNSPECIFIED] = "cause unspecified", 21 [RTE_FLOW_ERROR_TYPE_HANDLE] = "flow rule (handle)", 22 [RTE_FLOW_ERROR_TYPE_ATTR_GROUP] = "group field", 23 [RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY] = "priority field", 24 [RTE_FLOW_ERROR_TYPE_ATTR_INGRESS] = "ingress field", 25 [RTE_FLOW_ERROR_TYPE_ATTR_EGRESS] = "egress field", 26 [RTE_FLOW_ERROR_TYPE_ATTR] = "attributes structure", 27 [RTE_FLOW_ERROR_TYPE_ITEM_NUM] = "pattern length", 28 [RTE_FLOW_ERROR_TYPE_ITEM] = "specific pattern item", 29 [RTE_FLOW_ERROR_TYPE_ACTION_NUM] = "number of actions", 30 [RTE_FLOW_ERROR_TYPE_ACTION] = "specific action", 31 }; 32 const char *errstr; 33 char buf[32]; 34 int err = rte_errno; 35 36 if ((unsigned int)error->type >= RTE_DIM(errstrlist) || 37 !errstrlist[error->type]) 38 errstr = "unknown type"; 39 else 40 errstr = errstrlist[error->type]; 41 ERROR("Caught error type %d (%s): %s%s\n", 42 error->type, errstr, 43 error->cause ? (snprintf(buf, sizeof(buf), "cause: %p, ", 44 error->cause), buf) : "", 45 error->message ? error->message : "(no stated reason)"); 46 return -err; 47 } 48 49 static int 50 eth_dev_flow_isolate_set(struct rte_eth_dev *dev, 51 struct sub_device *sdev) 52 { 53 struct rte_flow_error ferror; 54 int ret; 55 56 if (!PRIV(dev)->flow_isolated) { 57 DEBUG("Flow isolation already disabled"); 58 } else { 59 DEBUG("Enabling flow isolation"); 60 ret = rte_flow_isolate(PORT_ID(sdev), 61 PRIV(dev)->flow_isolated, 62 &ferror); 63 if (ret) { 64 fs_flow_complain(&ferror); 65 return ret; 66 } 67 } 68 return 0; 69 } 70 71 static int 72 fs_eth_dev_conf_apply(struct rte_eth_dev *dev, 73 struct sub_device *sdev) 74 { 75 struct rte_eth_dev *edev; 76 struct rte_vlan_filter_conf *vfc1; 77 struct rte_vlan_filter_conf *vfc2; 78 struct rte_flow *flow; 79 struct rte_flow_error ferror; 80 uint32_t i; 81 int ret; 82 83 edev = ETH(sdev); 84 /* RX queue setup */ 85 for (i = 0; i < dev->data->nb_rx_queues; i++) { 86 struct rxq *rxq; 87 88 rxq = dev->data->rx_queues[i]; 89 ret = rte_eth_rx_queue_setup(PORT_ID(sdev), i, 90 rxq->info.nb_desc, rxq->socket_id, 91 &rxq->info.conf, rxq->info.mp); 92 if (ret) { 93 ERROR("rx_queue_setup failed"); 94 return ret; 95 } 96 } 97 /* TX queue setup */ 98 for (i = 0; i < dev->data->nb_tx_queues; i++) { 99 struct txq *txq; 100 101 txq = dev->data->tx_queues[i]; 102 ret = rte_eth_tx_queue_setup(PORT_ID(sdev), i, 103 txq->info.nb_desc, txq->socket_id, 104 &txq->info.conf); 105 if (ret) { 106 ERROR("tx_queue_setup failed"); 107 return ret; 108 } 109 } 110 /* dev_link.link_status */ 111 if (dev->data->dev_link.link_status != 112 edev->data->dev_link.link_status) { 113 DEBUG("Configuring link_status"); 114 if (dev->data->dev_link.link_status) 115 ret = rte_eth_dev_set_link_up(PORT_ID(sdev)); 116 else 117 ret = rte_eth_dev_set_link_down(PORT_ID(sdev)); 118 if (ret) { 119 ERROR("Failed to apply link_status"); 120 return ret; 121 } 122 } else { 123 DEBUG("link_status already set"); 124 } 125 /* promiscuous */ 126 if (dev->data->promiscuous != edev->data->promiscuous) { 127 DEBUG("Configuring promiscuous"); 128 if (dev->data->promiscuous) 129 rte_eth_promiscuous_enable(PORT_ID(sdev)); 130 else 131 rte_eth_promiscuous_disable(PORT_ID(sdev)); 132 } else { 133 DEBUG("promiscuous already set"); 134 } 135 /* all_multicast */ 136 if (dev->data->all_multicast != edev->data->all_multicast) { 137 DEBUG("Configuring all_multicast"); 138 if (dev->data->all_multicast) 139 rte_eth_allmulticast_enable(PORT_ID(sdev)); 140 else 141 rte_eth_allmulticast_disable(PORT_ID(sdev)); 142 } else { 143 DEBUG("all_multicast already set"); 144 } 145 /* MTU */ 146 if (dev->data->mtu != edev->data->mtu) { 147 DEBUG("Configuring MTU"); 148 ret = rte_eth_dev_set_mtu(PORT_ID(sdev), dev->data->mtu); 149 if (ret) { 150 ERROR("Failed to apply MTU"); 151 return ret; 152 } 153 } else { 154 DEBUG("MTU already set"); 155 } 156 /* default MAC */ 157 DEBUG("Configuring default MAC address"); 158 ret = rte_eth_dev_default_mac_addr_set(PORT_ID(sdev), 159 &dev->data->mac_addrs[0]); 160 if (ret) { 161 ERROR("Setting default MAC address failed"); 162 return ret; 163 } 164 /* additional MAC */ 165 if (PRIV(dev)->nb_mac_addr > 1) 166 DEBUG("Configure additional MAC address%s", 167 (PRIV(dev)->nb_mac_addr > 2 ? "es" : "")); 168 for (i = 1; i < PRIV(dev)->nb_mac_addr; i++) { 169 struct ether_addr *ea; 170 171 ea = &dev->data->mac_addrs[i]; 172 ret = rte_eth_dev_mac_addr_add(PORT_ID(sdev), ea, 173 PRIV(dev)->mac_addr_pool[i]); 174 if (ret) { 175 char ea_fmt[ETHER_ADDR_FMT_SIZE]; 176 177 ether_format_addr(ea_fmt, ETHER_ADDR_FMT_SIZE, ea); 178 ERROR("Adding MAC address %s failed", ea_fmt); 179 return ret; 180 } 181 } 182 /* VLAN filter */ 183 vfc1 = &dev->data->vlan_filter_conf; 184 vfc2 = &edev->data->vlan_filter_conf; 185 if (memcmp(vfc1, vfc2, sizeof(struct rte_vlan_filter_conf))) { 186 uint64_t vbit; 187 uint64_t ids; 188 size_t i; 189 uint16_t vlan_id; 190 191 DEBUG("Configuring VLAN filter"); 192 for (i = 0; i < RTE_DIM(vfc1->ids); i++) { 193 if (vfc1->ids[i] == 0) 194 continue; 195 ids = vfc1->ids[i]; 196 while (ids) { 197 vlan_id = 64 * i; 198 /* count trailing zeroes */ 199 vbit = ~ids & (ids - 1); 200 /* clear least significant bit set */ 201 ids ^= (ids ^ (ids - 1)) ^ vbit; 202 for (; vbit; vlan_id++) 203 vbit >>= 1; 204 ret = rte_eth_dev_vlan_filter( 205 PORT_ID(sdev), vlan_id, 1); 206 if (ret) { 207 ERROR("Failed to apply VLAN filter %hu", 208 vlan_id); 209 return ret; 210 } 211 } 212 } 213 } else { 214 DEBUG("VLAN filter already set"); 215 } 216 /* rte_flow */ 217 if (TAILQ_EMPTY(&PRIV(dev)->flow_list)) { 218 DEBUG("rte_flow already set"); 219 } else { 220 DEBUG("Resetting rte_flow configuration"); 221 ret = rte_flow_flush(PORT_ID(sdev), &ferror); 222 if (ret) { 223 fs_flow_complain(&ferror); 224 return ret; 225 } 226 i = 0; 227 rte_errno = 0; 228 DEBUG("Configuring rte_flow"); 229 TAILQ_FOREACH(flow, &PRIV(dev)->flow_list, next) { 230 DEBUG("Creating flow #%" PRIu32, i++); 231 flow->flows[SUB_ID(sdev)] = 232 rte_flow_create(PORT_ID(sdev), 233 &flow->fd->attr, 234 flow->fd->items, 235 flow->fd->actions, 236 &ferror); 237 ret = rte_errno; 238 if (ret) 239 break; 240 } 241 if (ret) { 242 fs_flow_complain(&ferror); 243 return ret; 244 } 245 } 246 return 0; 247 } 248 249 static void 250 fs_dev_remove(struct sub_device *sdev) 251 { 252 int ret; 253 254 if (sdev == NULL) 255 return; 256 switch (sdev->state) { 257 case DEV_STARTED: 258 failsafe_rx_intr_uninstall_subdevice(sdev); 259 rte_eth_dev_stop(PORT_ID(sdev)); 260 sdev->state = DEV_ACTIVE; 261 /* fallthrough */ 262 case DEV_ACTIVE: 263 failsafe_eth_dev_unregister_callbacks(sdev); 264 rte_eth_dev_close(PORT_ID(sdev)); 265 sdev->state = DEV_PROBED; 266 /* fallthrough */ 267 case DEV_PROBED: 268 ret = rte_eal_hotplug_remove(sdev->bus->name, 269 sdev->dev->name); 270 if (ret) { 271 ERROR("Bus detach failed for sub_device %u", 272 SUB_ID(sdev)); 273 } else { 274 rte_eth_dev_release_port(ETH(sdev)); 275 } 276 sdev->state = DEV_PARSED; 277 /* fallthrough */ 278 case DEV_PARSED: 279 case DEV_UNDEFINED: 280 sdev->state = DEV_UNDEFINED; 281 /* the end */ 282 break; 283 } 284 sdev->remove = 0; 285 failsafe_hotplug_alarm_install(sdev->fs_dev); 286 } 287 288 static void 289 fs_dev_stats_save(struct sub_device *sdev) 290 { 291 struct rte_eth_stats stats; 292 int err; 293 294 /* Attempt to read current stats. */ 295 err = rte_eth_stats_get(PORT_ID(sdev), &stats); 296 if (err) { 297 uint64_t timestamp = sdev->stats_snapshot.timestamp; 298 299 WARN("Could not access latest statistics from sub-device %d.\n", 300 SUB_ID(sdev)); 301 if (timestamp != 0) 302 WARN("Using latest snapshot taken before %"PRIu64" seconds.\n", 303 (rte_rdtsc() - timestamp) / rte_get_tsc_hz()); 304 } 305 failsafe_stats_increment(&PRIV(sdev->fs_dev)->stats_accumulator, 306 err ? &sdev->stats_snapshot.stats : &stats); 307 memset(&sdev->stats_snapshot, 0, sizeof(sdev->stats_snapshot)); 308 } 309 310 static inline int 311 fs_rxtx_clean(struct sub_device *sdev) 312 { 313 uint16_t i; 314 315 for (i = 0; i < ETH(sdev)->data->nb_rx_queues; i++) 316 if (FS_ATOMIC_RX(sdev, i)) 317 return 0; 318 for (i = 0; i < ETH(sdev)->data->nb_tx_queues; i++) 319 if (FS_ATOMIC_TX(sdev, i)) 320 return 0; 321 return 1; 322 } 323 324 void 325 failsafe_eth_dev_unregister_callbacks(struct sub_device *sdev) 326 { 327 int ret; 328 329 if (sdev == NULL) 330 return; 331 if (sdev->rmv_callback) { 332 ret = rte_eth_dev_callback_unregister(PORT_ID(sdev), 333 RTE_ETH_EVENT_INTR_RMV, 334 failsafe_eth_rmv_event_callback, 335 sdev); 336 if (ret) 337 WARN("Failed to unregister RMV callback for sub_device" 338 " %d", SUB_ID(sdev)); 339 sdev->rmv_callback = 0; 340 } 341 if (sdev->lsc_callback) { 342 ret = rte_eth_dev_callback_unregister(PORT_ID(sdev), 343 RTE_ETH_EVENT_INTR_LSC, 344 failsafe_eth_lsc_event_callback, 345 sdev); 346 if (ret) 347 WARN("Failed to unregister LSC callback for sub_device" 348 " %d", SUB_ID(sdev)); 349 sdev->lsc_callback = 0; 350 } 351 } 352 353 void 354 failsafe_dev_remove(struct rte_eth_dev *dev) 355 { 356 struct sub_device *sdev; 357 uint8_t i; 358 359 FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) 360 if (sdev->remove && fs_rxtx_clean(sdev)) { 361 if (fs_lock(dev, 1) != 0) 362 return; 363 fs_dev_stats_save(sdev); 364 fs_dev_remove(sdev); 365 fs_unlock(dev, 1); 366 } 367 } 368 369 int 370 failsafe_eth_dev_state_sync(struct rte_eth_dev *dev) 371 { 372 struct sub_device *sdev; 373 uint32_t inactive; 374 int ret; 375 uint8_t i; 376 377 if (PRIV(dev)->state < DEV_PARSED) 378 return 0; 379 380 ret = failsafe_args_parse_subs(dev); 381 if (ret) 382 goto err_remove; 383 384 if (PRIV(dev)->state < DEV_PROBED) 385 return 0; 386 ret = failsafe_eal_init(dev); 387 if (ret) 388 goto err_remove; 389 if (PRIV(dev)->state < DEV_ACTIVE) 390 return 0; 391 inactive = 0; 392 FOREACH_SUBDEV(sdev, i, dev) { 393 if (sdev->state == DEV_PROBED) { 394 inactive |= UINT32_C(1) << i; 395 ret = eth_dev_flow_isolate_set(dev, sdev); 396 if (ret) { 397 ERROR("Could not apply configuration to sub_device %d", 398 i); 399 goto err_remove; 400 } 401 } 402 } 403 ret = dev->dev_ops->dev_configure(dev); 404 if (ret) 405 goto err_remove; 406 FOREACH_SUBDEV(sdev, i, dev) { 407 if (inactive & (UINT32_C(1) << i)) { 408 ret = fs_eth_dev_conf_apply(dev, sdev); 409 if (ret) { 410 ERROR("Could not apply configuration to sub_device %d", 411 i); 412 goto err_remove; 413 } 414 } 415 } 416 /* 417 * If new devices have been configured, check if 418 * the link state has changed. 419 */ 420 if (inactive) 421 dev->dev_ops->link_update(dev, 1); 422 if (PRIV(dev)->state < DEV_STARTED) 423 return 0; 424 ret = dev->dev_ops->dev_start(dev); 425 if (ret) 426 goto err_remove; 427 return 0; 428 err_remove: 429 FOREACH_SUBDEV(sdev, i, dev) 430 if (sdev->state != PRIV(dev)->state) 431 sdev->remove = 1; 432 return ret; 433 } 434 435 void 436 failsafe_stats_increment(struct rte_eth_stats *to, struct rte_eth_stats *from) 437 { 438 uint32_t i; 439 440 RTE_ASSERT(to != NULL && from != NULL); 441 to->ipackets += from->ipackets; 442 to->opackets += from->opackets; 443 to->ibytes += from->ibytes; 444 to->obytes += from->obytes; 445 to->imissed += from->imissed; 446 to->ierrors += from->ierrors; 447 to->oerrors += from->oerrors; 448 to->rx_nombuf += from->rx_nombuf; 449 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS; i++) { 450 to->q_ipackets[i] += from->q_ipackets[i]; 451 to->q_opackets[i] += from->q_opackets[i]; 452 to->q_ibytes[i] += from->q_ibytes[i]; 453 to->q_obytes[i] += from->q_obytes[i]; 454 to->q_errors[i] += from->q_errors[i]; 455 } 456 } 457 458 int 459 failsafe_eth_rmv_event_callback(uint16_t port_id __rte_unused, 460 enum rte_eth_event_type event __rte_unused, 461 void *cb_arg, void *out __rte_unused) 462 { 463 struct sub_device *sdev = cb_arg; 464 465 fs_lock(sdev->fs_dev, 0); 466 /* Switch as soon as possible tx_dev. */ 467 fs_switch_dev(sdev->fs_dev, sdev); 468 /* Use safe bursts in any case. */ 469 set_burst_fn(sdev->fs_dev, 1); 470 /* 471 * Async removal, the sub-PMD will try to unregister 472 * the callback at the source of the current thread context. 473 */ 474 sdev->remove = 1; 475 fs_unlock(sdev->fs_dev, 0); 476 return 0; 477 } 478 479 int 480 failsafe_eth_lsc_event_callback(uint16_t port_id __rte_unused, 481 enum rte_eth_event_type event __rte_unused, 482 void *cb_arg, void *out __rte_unused) 483 { 484 struct rte_eth_dev *dev = cb_arg; 485 int ret; 486 487 ret = dev->dev_ops->link_update(dev, 0); 488 /* We must pass on the LSC event */ 489 if (ret) 490 return _rte_eth_dev_callback_process(dev, 491 RTE_ETH_EVENT_INTR_LSC, 492 NULL); 493 else 494 return 0; 495 } 496 497 /* Take sub-device ownership before it becomes exposed to the application. */ 498 int 499 failsafe_eth_new_event_callback(uint16_t port_id, 500 enum rte_eth_event_type event __rte_unused, 501 void *cb_arg, void *out __rte_unused) 502 { 503 struct rte_eth_dev *fs_dev = cb_arg; 504 struct sub_device *sdev; 505 struct rte_eth_dev *dev = &rte_eth_devices[port_id]; 506 uint8_t i; 507 508 FOREACH_SUBDEV_STATE(sdev, i, fs_dev, DEV_PARSED) { 509 if (sdev->state >= DEV_PROBED) 510 continue; 511 if (strcmp(sdev->devargs.name, dev->device->name) != 0) 512 continue; 513 rte_eth_dev_owner_set(port_id, &PRIV(fs_dev)->my_owner); 514 /* The actual owner will be checked after the port probing. */ 515 break; 516 } 517 return 0; 518 } 519