1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2010-2015 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include "rte_eth_ring.h" 35 #include <rte_mbuf.h> 36 #include <rte_ethdev.h> 37 #include <rte_malloc.h> 38 #include <rte_memcpy.h> 39 #include <rte_string_fns.h> 40 #include <rte_bus_vdev.h> 41 #include <rte_kvargs.h> 42 #include <rte_errno.h> 43 44 #define ETH_RING_NUMA_NODE_ACTION_ARG "nodeaction" 45 #define ETH_RING_ACTION_CREATE "CREATE" 46 #define ETH_RING_ACTION_ATTACH "ATTACH" 47 #define ETH_RING_INTERNAL_ARG "internal" 48 49 static const char *valid_arguments[] = { 50 ETH_RING_NUMA_NODE_ACTION_ARG, 51 ETH_RING_INTERNAL_ARG, 52 NULL 53 }; 54 55 struct ring_internal_args { 56 struct rte_ring * const *rx_queues; 57 const unsigned int nb_rx_queues; 58 struct rte_ring * const *tx_queues; 59 const unsigned int nb_tx_queues; 60 const unsigned int numa_node; 61 void *addr; /* self addr for sanity check */ 62 }; 63 64 enum dev_action { 65 DEV_CREATE, 66 DEV_ATTACH 67 }; 68 69 struct ring_queue { 70 struct rte_ring *rng; 71 rte_atomic64_t rx_pkts; 72 rte_atomic64_t tx_pkts; 73 rte_atomic64_t err_pkts; 74 }; 75 76 struct pmd_internals { 77 unsigned max_rx_queues; 78 unsigned max_tx_queues; 79 80 struct ring_queue rx_ring_queues[RTE_PMD_RING_MAX_RX_RINGS]; 81 struct ring_queue tx_ring_queues[RTE_PMD_RING_MAX_TX_RINGS]; 82 83 struct ether_addr address; 84 enum dev_action action; 85 }; 86 87 88 static struct rte_eth_link pmd_link = { 89 .link_speed = ETH_SPEED_NUM_10G, 90 .link_duplex = ETH_LINK_FULL_DUPLEX, 91 .link_status = ETH_LINK_DOWN, 92 .link_autoneg = ETH_LINK_FIXED, 93 }; 94 95 static uint16_t 96 eth_ring_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) 97 { 98 void **ptrs = (void *)&bufs[0]; 99 struct ring_queue *r = q; 100 const uint16_t nb_rx = (uint16_t)rte_ring_dequeue_burst(r->rng, 101 ptrs, nb_bufs, NULL); 102 if (r->rng->flags & RING_F_SC_DEQ) 103 r->rx_pkts.cnt += nb_rx; 104 else 105 rte_atomic64_add(&(r->rx_pkts), nb_rx); 106 return nb_rx; 107 } 108 109 static uint16_t 110 eth_ring_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) 111 { 112 void **ptrs = (void *)&bufs[0]; 113 struct ring_queue *r = q; 114 const uint16_t nb_tx = (uint16_t)rte_ring_enqueue_burst(r->rng, 115 ptrs, nb_bufs, NULL); 116 if (r->rng->flags & RING_F_SP_ENQ) { 117 r->tx_pkts.cnt += nb_tx; 118 r->err_pkts.cnt += nb_bufs - nb_tx; 119 } else { 120 rte_atomic64_add(&(r->tx_pkts), nb_tx); 121 rte_atomic64_add(&(r->err_pkts), nb_bufs - nb_tx); 122 } 123 return nb_tx; 124 } 125 126 static int 127 eth_dev_configure(struct rte_eth_dev *dev __rte_unused) { return 0; } 128 129 static int 130 eth_dev_start(struct rte_eth_dev *dev) 131 { 132 dev->data->dev_link.link_status = ETH_LINK_UP; 133 return 0; 134 } 135 136 static void 137 eth_dev_stop(struct rte_eth_dev *dev) 138 { 139 dev->data->dev_link.link_status = ETH_LINK_DOWN; 140 } 141 142 static int 143 eth_dev_set_link_down(struct rte_eth_dev *dev) 144 { 145 dev->data->dev_link.link_status = ETH_LINK_DOWN; 146 return 0; 147 } 148 149 static int 150 eth_dev_set_link_up(struct rte_eth_dev *dev) 151 { 152 dev->data->dev_link.link_status = ETH_LINK_UP; 153 return 0; 154 } 155 156 static int 157 eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id, 158 uint16_t nb_rx_desc __rte_unused, 159 unsigned int socket_id __rte_unused, 160 const struct rte_eth_rxconf *rx_conf __rte_unused, 161 struct rte_mempool *mb_pool __rte_unused) 162 { 163 struct pmd_internals *internals = dev->data->dev_private; 164 dev->data->rx_queues[rx_queue_id] = &internals->rx_ring_queues[rx_queue_id]; 165 return 0; 166 } 167 168 static int 169 eth_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id, 170 uint16_t nb_tx_desc __rte_unused, 171 unsigned int socket_id __rte_unused, 172 const struct rte_eth_txconf *tx_conf __rte_unused) 173 { 174 struct pmd_internals *internals = dev->data->dev_private; 175 dev->data->tx_queues[tx_queue_id] = &internals->tx_ring_queues[tx_queue_id]; 176 return 0; 177 } 178 179 180 static void 181 eth_dev_info(struct rte_eth_dev *dev, 182 struct rte_eth_dev_info *dev_info) 183 { 184 struct pmd_internals *internals = dev->data->dev_private; 185 dev_info->max_mac_addrs = 1; 186 dev_info->max_rx_pktlen = (uint32_t)-1; 187 dev_info->max_rx_queues = (uint16_t)internals->max_rx_queues; 188 dev_info->max_tx_queues = (uint16_t)internals->max_tx_queues; 189 dev_info->min_rx_bufsize = 0; 190 } 191 192 static int 193 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 194 { 195 unsigned i; 196 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0; 197 const struct pmd_internals *internal = dev->data->dev_private; 198 199 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && 200 i < dev->data->nb_rx_queues; i++) { 201 stats->q_ipackets[i] = internal->rx_ring_queues[i].rx_pkts.cnt; 202 rx_total += stats->q_ipackets[i]; 203 } 204 205 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && 206 i < dev->data->nb_tx_queues; i++) { 207 stats->q_opackets[i] = internal->tx_ring_queues[i].tx_pkts.cnt; 208 stats->q_errors[i] = internal->tx_ring_queues[i].err_pkts.cnt; 209 tx_total += stats->q_opackets[i]; 210 tx_err_total += stats->q_errors[i]; 211 } 212 213 stats->ipackets = rx_total; 214 stats->opackets = tx_total; 215 stats->oerrors = tx_err_total; 216 217 return 0; 218 } 219 220 static void 221 eth_stats_reset(struct rte_eth_dev *dev) 222 { 223 unsigned i; 224 struct pmd_internals *internal = dev->data->dev_private; 225 for (i = 0; i < dev->data->nb_rx_queues; i++) 226 internal->rx_ring_queues[i].rx_pkts.cnt = 0; 227 for (i = 0; i < dev->data->nb_tx_queues; i++) { 228 internal->tx_ring_queues[i].tx_pkts.cnt = 0; 229 internal->tx_ring_queues[i].err_pkts.cnt = 0; 230 } 231 } 232 233 static void 234 eth_mac_addr_remove(struct rte_eth_dev *dev __rte_unused, 235 uint32_t index __rte_unused) 236 { 237 } 238 239 static int 240 eth_mac_addr_add(struct rte_eth_dev *dev __rte_unused, 241 struct ether_addr *mac_addr __rte_unused, 242 uint32_t index __rte_unused, 243 uint32_t vmdq __rte_unused) 244 { 245 return 0; 246 } 247 248 static void 249 eth_queue_release(void *q __rte_unused) { ; } 250 static int 251 eth_link_update(struct rte_eth_dev *dev __rte_unused, 252 int wait_to_complete __rte_unused) { return 0; } 253 254 static const struct eth_dev_ops ops = { 255 .dev_start = eth_dev_start, 256 .dev_stop = eth_dev_stop, 257 .dev_set_link_up = eth_dev_set_link_up, 258 .dev_set_link_down = eth_dev_set_link_down, 259 .dev_configure = eth_dev_configure, 260 .dev_infos_get = eth_dev_info, 261 .rx_queue_setup = eth_rx_queue_setup, 262 .tx_queue_setup = eth_tx_queue_setup, 263 .rx_queue_release = eth_queue_release, 264 .tx_queue_release = eth_queue_release, 265 .link_update = eth_link_update, 266 .stats_get = eth_stats_get, 267 .stats_reset = eth_stats_reset, 268 .mac_addr_remove = eth_mac_addr_remove, 269 .mac_addr_add = eth_mac_addr_add, 270 }; 271 272 static struct rte_vdev_driver pmd_ring_drv; 273 274 static int 275 do_eth_dev_ring_create(const char *name, 276 struct rte_ring * const rx_queues[], const unsigned nb_rx_queues, 277 struct rte_ring *const tx_queues[], const unsigned nb_tx_queues, 278 const unsigned int numa_node, enum dev_action action, 279 struct rte_eth_dev **eth_dev_p) 280 { 281 struct rte_eth_dev_data *data = NULL; 282 struct pmd_internals *internals = NULL; 283 struct rte_eth_dev *eth_dev = NULL; 284 void **rx_queues_local = NULL; 285 void **tx_queues_local = NULL; 286 unsigned i; 287 288 RTE_LOG(INFO, PMD, "Creating rings-backed ethdev on numa socket %u\n", 289 numa_node); 290 291 /* now do all data allocation - for eth_dev structure, dummy pci driver 292 * and internal (private) data 293 */ 294 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node); 295 if (data == NULL) { 296 rte_errno = ENOMEM; 297 goto error; 298 } 299 300 rx_queues_local = rte_zmalloc_socket(name, 301 sizeof(void *) * nb_rx_queues, 0, numa_node); 302 if (rx_queues_local == NULL) { 303 rte_errno = ENOMEM; 304 goto error; 305 } 306 307 tx_queues_local = rte_zmalloc_socket(name, 308 sizeof(void *) * nb_tx_queues, 0, numa_node); 309 if (tx_queues_local == NULL) { 310 rte_errno = ENOMEM; 311 goto error; 312 } 313 314 internals = rte_zmalloc_socket(name, sizeof(*internals), 0, numa_node); 315 if (internals == NULL) { 316 rte_errno = ENOMEM; 317 goto error; 318 } 319 320 /* reserve an ethdev entry */ 321 eth_dev = rte_eth_dev_allocate(name); 322 if (eth_dev == NULL) { 323 rte_errno = ENOSPC; 324 goto error; 325 } 326 327 /* now put it all together 328 * - store queue data in internals, 329 * - store numa_node info in eth_dev_data 330 * - point eth_dev_data to internals 331 * - and point eth_dev structure to new eth_dev_data structure 332 */ 333 /* NOTE: we'll replace the data element, of originally allocated eth_dev 334 * so the rings are local per-process */ 335 336 rte_memcpy(data, eth_dev->data, sizeof(*data)); 337 data->rx_queues = rx_queues_local; 338 data->tx_queues = tx_queues_local; 339 340 internals->action = action; 341 internals->max_rx_queues = nb_rx_queues; 342 internals->max_tx_queues = nb_tx_queues; 343 for (i = 0; i < nb_rx_queues; i++) { 344 internals->rx_ring_queues[i].rng = rx_queues[i]; 345 data->rx_queues[i] = &internals->rx_ring_queues[i]; 346 } 347 for (i = 0; i < nb_tx_queues; i++) { 348 internals->tx_ring_queues[i].rng = tx_queues[i]; 349 data->tx_queues[i] = &internals->tx_ring_queues[i]; 350 } 351 352 data->dev_private = internals; 353 data->nb_rx_queues = (uint16_t)nb_rx_queues; 354 data->nb_tx_queues = (uint16_t)nb_tx_queues; 355 data->dev_link = pmd_link; 356 data->mac_addrs = &internals->address; 357 358 eth_dev->data = data; 359 eth_dev->dev_ops = &ops; 360 data->kdrv = RTE_KDRV_NONE; 361 data->numa_node = numa_node; 362 363 /* finally assign rx and tx ops */ 364 eth_dev->rx_pkt_burst = eth_ring_rx; 365 eth_dev->tx_pkt_burst = eth_ring_tx; 366 367 *eth_dev_p = eth_dev; 368 369 return data->port_id; 370 371 error: 372 rte_free(rx_queues_local); 373 rte_free(tx_queues_local); 374 rte_free(data); 375 rte_free(internals); 376 377 return -1; 378 } 379 380 int 381 rte_eth_from_rings(const char *name, struct rte_ring *const rx_queues[], 382 const unsigned nb_rx_queues, 383 struct rte_ring *const tx_queues[], 384 const unsigned nb_tx_queues, 385 const unsigned numa_node) 386 { 387 struct ring_internal_args args = { 388 .rx_queues = rx_queues, 389 .nb_rx_queues = nb_rx_queues, 390 .tx_queues = tx_queues, 391 .nb_tx_queues = nb_tx_queues, 392 .numa_node = numa_node, 393 .addr = &args, 394 }; 395 char args_str[32] = { 0 }; 396 char ring_name[32] = { 0 }; 397 uint16_t port_id = RTE_MAX_ETHPORTS; 398 int ret; 399 400 /* do some parameter checking */ 401 if (rx_queues == NULL && nb_rx_queues > 0) { 402 rte_errno = EINVAL; 403 return -1; 404 } 405 if (tx_queues == NULL && nb_tx_queues > 0) { 406 rte_errno = EINVAL; 407 return -1; 408 } 409 if (nb_rx_queues > RTE_PMD_RING_MAX_RX_RINGS) { 410 rte_errno = EINVAL; 411 return -1; 412 } 413 414 snprintf(args_str, 32, "%s=%p", ETH_RING_INTERNAL_ARG, &args); 415 snprintf(ring_name, 32, "net_ring_%s", name); 416 417 ret = rte_vdev_init(ring_name, args_str); 418 if (ret) { 419 rte_errno = EINVAL; 420 return -1; 421 } 422 423 rte_eth_dev_get_port_by_name(ring_name, &port_id); 424 425 return port_id; 426 } 427 428 int 429 rte_eth_from_ring(struct rte_ring *r) 430 { 431 return rte_eth_from_rings(r->name, &r, 1, &r, 1, 432 r->memzone ? r->memzone->socket_id : SOCKET_ID_ANY); 433 } 434 435 static int 436 eth_dev_ring_create(const char *name, const unsigned numa_node, 437 enum dev_action action, struct rte_eth_dev **eth_dev) 438 { 439 /* rx and tx are so-called from point of view of first port. 440 * They are inverted from the point of view of second port 441 */ 442 struct rte_ring *rxtx[RTE_PMD_RING_MAX_RX_RINGS]; 443 unsigned i; 444 char rng_name[RTE_RING_NAMESIZE]; 445 unsigned num_rings = RTE_MIN(RTE_PMD_RING_MAX_RX_RINGS, 446 RTE_PMD_RING_MAX_TX_RINGS); 447 448 for (i = 0; i < num_rings; i++) { 449 snprintf(rng_name, sizeof(rng_name), "ETH_RXTX%u_%s", i, name); 450 rxtx[i] = (action == DEV_CREATE) ? 451 rte_ring_create(rng_name, 1024, numa_node, 452 RING_F_SP_ENQ|RING_F_SC_DEQ) : 453 rte_ring_lookup(rng_name); 454 if (rxtx[i] == NULL) 455 return -1; 456 } 457 458 if (do_eth_dev_ring_create(name, rxtx, num_rings, rxtx, num_rings, 459 numa_node, action, eth_dev) < 0) 460 return -1; 461 462 return 0; 463 } 464 465 struct node_action_pair { 466 char name[PATH_MAX]; 467 unsigned node; 468 enum dev_action action; 469 }; 470 471 struct node_action_list { 472 unsigned total; 473 unsigned count; 474 struct node_action_pair *list; 475 }; 476 477 static int parse_kvlist (const char *key __rte_unused, const char *value, void *data) 478 { 479 struct node_action_list *info = data; 480 int ret; 481 char *name; 482 char *action; 483 char *node; 484 char *end; 485 486 name = strdup(value); 487 488 ret = -EINVAL; 489 490 if (!name) { 491 RTE_LOG(WARNING, PMD, "command line parameter is empty for ring pmd!\n"); 492 goto out; 493 } 494 495 node = strchr(name, ':'); 496 if (!node) { 497 RTE_LOG(WARNING, PMD, "could not parse node value from %s\n", 498 name); 499 goto out; 500 } 501 502 *node = '\0'; 503 node++; 504 505 action = strchr(node, ':'); 506 if (!action) { 507 RTE_LOG(WARNING, PMD, "could not parse action value from %s\n", 508 node); 509 goto out; 510 } 511 512 *action = '\0'; 513 action++; 514 515 /* 516 * Need to do some sanity checking here 517 */ 518 519 if (strcmp(action, ETH_RING_ACTION_ATTACH) == 0) 520 info->list[info->count].action = DEV_ATTACH; 521 else if (strcmp(action, ETH_RING_ACTION_CREATE) == 0) 522 info->list[info->count].action = DEV_CREATE; 523 else 524 goto out; 525 526 errno = 0; 527 info->list[info->count].node = strtol(node, &end, 10); 528 529 if ((errno != 0) || (*end != '\0')) { 530 RTE_LOG(WARNING, PMD, "node value %s is unparseable as a number\n", node); 531 goto out; 532 } 533 534 snprintf(info->list[info->count].name, sizeof(info->list[info->count].name), "%s", name); 535 536 info->count++; 537 538 ret = 0; 539 out: 540 free(name); 541 return ret; 542 } 543 544 static int 545 parse_internal_args(const char *key __rte_unused, const char *value, 546 void *data) 547 { 548 struct ring_internal_args **internal_args = data; 549 void *args; 550 551 sscanf(value, "%p", &args); 552 553 *internal_args = args; 554 555 if ((*internal_args)->addr != args) 556 return -1; 557 558 return 0; 559 } 560 561 static int 562 rte_pmd_ring_probe(struct rte_vdev_device *dev) 563 { 564 const char *name, *params; 565 struct rte_kvargs *kvlist = NULL; 566 int ret = 0; 567 struct node_action_list *info = NULL; 568 struct rte_eth_dev *eth_dev = NULL; 569 struct ring_internal_args *internal_args; 570 571 name = rte_vdev_device_name(dev); 572 params = rte_vdev_device_args(dev); 573 574 RTE_LOG(INFO, PMD, "Initializing pmd_ring for %s\n", name); 575 576 if (params == NULL || params[0] == '\0') { 577 ret = eth_dev_ring_create(name, rte_socket_id(), DEV_CREATE, 578 ð_dev); 579 if (ret == -1) { 580 RTE_LOG(INFO, PMD, 581 "Attach to pmd_ring for %s\n", name); 582 ret = eth_dev_ring_create(name, rte_socket_id(), 583 DEV_ATTACH, ð_dev); 584 } 585 } else { 586 kvlist = rte_kvargs_parse(params, valid_arguments); 587 588 if (!kvlist) { 589 RTE_LOG(INFO, PMD, "Ignoring unsupported parameters when creating" 590 " rings-backed ethernet device\n"); 591 ret = eth_dev_ring_create(name, rte_socket_id(), 592 DEV_CREATE, ð_dev); 593 if (ret == -1) { 594 RTE_LOG(INFO, PMD, 595 "Attach to pmd_ring for %s\n", 596 name); 597 ret = eth_dev_ring_create(name, rte_socket_id(), 598 DEV_ATTACH, ð_dev); 599 } 600 601 if (eth_dev) 602 eth_dev->device = &dev->device; 603 604 return ret; 605 } 606 607 if (rte_kvargs_count(kvlist, ETH_RING_INTERNAL_ARG) == 1) { 608 ret = rte_kvargs_process(kvlist, ETH_RING_INTERNAL_ARG, 609 parse_internal_args, 610 &internal_args); 611 if (ret < 0) 612 goto out_free; 613 614 ret = do_eth_dev_ring_create(name, 615 internal_args->rx_queues, 616 internal_args->nb_rx_queues, 617 internal_args->tx_queues, 618 internal_args->nb_tx_queues, 619 internal_args->numa_node, 620 DEV_ATTACH, 621 ð_dev); 622 if (ret >= 0) 623 ret = 0; 624 } else { 625 ret = rte_kvargs_count(kvlist, ETH_RING_NUMA_NODE_ACTION_ARG); 626 info = rte_zmalloc("struct node_action_list", 627 sizeof(struct node_action_list) + 628 (sizeof(struct node_action_pair) * ret), 629 0); 630 if (!info) 631 goto out_free; 632 633 info->total = ret; 634 info->list = (struct node_action_pair*)(info + 1); 635 636 ret = rte_kvargs_process(kvlist, ETH_RING_NUMA_NODE_ACTION_ARG, 637 parse_kvlist, info); 638 639 if (ret < 0) 640 goto out_free; 641 642 for (info->count = 0; info->count < info->total; info->count++) { 643 ret = eth_dev_ring_create(info->list[info->count].name, 644 info->list[info->count].node, 645 info->list[info->count].action, 646 ð_dev); 647 if ((ret == -1) && 648 (info->list[info->count].action == DEV_CREATE)) { 649 RTE_LOG(INFO, PMD, 650 "Attach to pmd_ring for %s\n", 651 name); 652 ret = eth_dev_ring_create(name, 653 info->list[info->count].node, 654 DEV_ATTACH, 655 ð_dev); 656 } 657 } 658 } 659 } 660 661 if (eth_dev) 662 eth_dev->device = &dev->device; 663 664 out_free: 665 rte_kvargs_free(kvlist); 666 rte_free(info); 667 return ret; 668 } 669 670 static int 671 rte_pmd_ring_remove(struct rte_vdev_device *dev) 672 { 673 const char *name = rte_vdev_device_name(dev); 674 struct rte_eth_dev *eth_dev = NULL; 675 struct pmd_internals *internals = NULL; 676 struct ring_queue *r = NULL; 677 uint16_t i; 678 679 RTE_LOG(INFO, PMD, "Un-Initializing pmd_ring for %s\n", name); 680 681 if (name == NULL) 682 return -EINVAL; 683 684 /* find an ethdev entry */ 685 eth_dev = rte_eth_dev_allocated(name); 686 if (eth_dev == NULL) 687 return -ENODEV; 688 689 eth_dev_stop(eth_dev); 690 691 internals = eth_dev->data->dev_private; 692 if (internals->action == DEV_CREATE) { 693 /* 694 * it is only necessary to delete the rings in rx_queues because 695 * they are the same used in tx_queues 696 */ 697 for (i = 0; i < eth_dev->data->nb_rx_queues; i++) { 698 r = eth_dev->data->rx_queues[i]; 699 rte_ring_free(r->rng); 700 } 701 } 702 703 rte_free(eth_dev->data->rx_queues); 704 rte_free(eth_dev->data->tx_queues); 705 rte_free(eth_dev->data->dev_private); 706 707 rte_free(eth_dev->data); 708 709 rte_eth_dev_release_port(eth_dev); 710 return 0; 711 } 712 713 static struct rte_vdev_driver pmd_ring_drv = { 714 .probe = rte_pmd_ring_probe, 715 .remove = rte_pmd_ring_remove, 716 }; 717 718 RTE_PMD_REGISTER_VDEV(net_ring, pmd_ring_drv); 719 RTE_PMD_REGISTER_ALIAS(net_ring, eth_ring); 720 RTE_PMD_REGISTER_PARAM_STRING(net_ring, 721 ETH_RING_NUMA_NODE_ACTION_ARG "=name:node:action(ATTACH|CREATE)"); 722