1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (C) IGEL Co.,Ltd. 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 IGEL Co.,Ltd. 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_mbuf.h> 35 #include <rte_ethdev.h> 36 #include <rte_malloc.h> 37 #include <rte_memcpy.h> 38 #include <rte_vdev.h> 39 #include <rte_kvargs.h> 40 #include <rte_spinlock.h> 41 42 #include "rte_eth_null.h" 43 44 #define ETH_NULL_PACKET_SIZE_ARG "size" 45 #define ETH_NULL_PACKET_COPY_ARG "copy" 46 47 static unsigned default_packet_size = 64; 48 static unsigned default_packet_copy; 49 50 static const char *valid_arguments[] = { 51 ETH_NULL_PACKET_SIZE_ARG, 52 ETH_NULL_PACKET_COPY_ARG, 53 NULL 54 }; 55 56 struct pmd_internals; 57 58 struct null_queue { 59 struct pmd_internals *internals; 60 61 struct rte_mempool *mb_pool; 62 struct rte_mbuf *dummy_packet; 63 64 rte_atomic64_t rx_pkts; 65 rte_atomic64_t tx_pkts; 66 rte_atomic64_t err_pkts; 67 }; 68 69 struct pmd_internals { 70 unsigned packet_size; 71 unsigned packet_copy; 72 uint8_t port_id; 73 74 struct null_queue rx_null_queues[RTE_MAX_QUEUES_PER_PORT]; 75 struct null_queue tx_null_queues[RTE_MAX_QUEUES_PER_PORT]; 76 77 /** Bit mask of RSS offloads, the bit offset also means flow type */ 78 uint64_t flow_type_rss_offloads; 79 80 rte_spinlock_t rss_lock; 81 82 uint16_t reta_size; 83 struct rte_eth_rss_reta_entry64 reta_conf[ETH_RSS_RETA_SIZE_128 / 84 RTE_RETA_GROUP_SIZE]; 85 86 uint8_t rss_key[40]; /**< 40-byte hash key. */ 87 }; 88 89 90 static struct ether_addr eth_addr = { .addr_bytes = {0} }; 91 static const char *drivername = "Null PMD"; 92 static struct rte_eth_link pmd_link = { 93 .link_speed = ETH_SPEED_NUM_10G, 94 .link_duplex = ETH_LINK_FULL_DUPLEX, 95 .link_status = ETH_LINK_DOWN, 96 .link_autoneg = ETH_LINK_SPEED_AUTONEG, 97 }; 98 99 static uint16_t 100 eth_null_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) 101 { 102 int i; 103 struct null_queue *h = q; 104 unsigned packet_size; 105 106 if ((q == NULL) || (bufs == NULL)) 107 return 0; 108 109 packet_size = h->internals->packet_size; 110 for (i = 0; i < nb_bufs; i++) { 111 bufs[i] = rte_pktmbuf_alloc(h->mb_pool); 112 if (!bufs[i]) 113 break; 114 bufs[i]->data_len = (uint16_t)packet_size; 115 bufs[i]->pkt_len = packet_size; 116 bufs[i]->nb_segs = 1; 117 bufs[i]->next = NULL; 118 bufs[i]->port = h->internals->port_id; 119 } 120 121 rte_atomic64_add(&(h->rx_pkts), i); 122 123 return i; 124 } 125 126 static uint16_t 127 eth_null_copy_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) 128 { 129 int i; 130 struct null_queue *h = q; 131 unsigned packet_size; 132 133 if ((q == NULL) || (bufs == NULL)) 134 return 0; 135 136 packet_size = h->internals->packet_size; 137 for (i = 0; i < nb_bufs; i++) { 138 bufs[i] = rte_pktmbuf_alloc(h->mb_pool); 139 if (!bufs[i]) 140 break; 141 rte_memcpy(rte_pktmbuf_mtod(bufs[i], void *), h->dummy_packet, 142 packet_size); 143 bufs[i]->data_len = (uint16_t)packet_size; 144 bufs[i]->pkt_len = packet_size; 145 bufs[i]->nb_segs = 1; 146 bufs[i]->next = NULL; 147 bufs[i]->port = h->internals->port_id; 148 } 149 150 rte_atomic64_add(&(h->rx_pkts), i); 151 152 return i; 153 } 154 155 static uint16_t 156 eth_null_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) 157 { 158 int i; 159 struct null_queue *h = q; 160 161 if ((q == NULL) || (bufs == NULL)) 162 return 0; 163 164 for (i = 0; i < nb_bufs; i++) 165 rte_pktmbuf_free(bufs[i]); 166 167 rte_atomic64_add(&(h->tx_pkts), i); 168 169 return i; 170 } 171 172 static uint16_t 173 eth_null_copy_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) 174 { 175 int i; 176 struct null_queue *h = q; 177 unsigned packet_size; 178 179 if ((q == NULL) || (bufs == NULL)) 180 return 0; 181 182 packet_size = h->internals->packet_size; 183 for (i = 0; i < nb_bufs; i++) { 184 rte_memcpy(h->dummy_packet, rte_pktmbuf_mtod(bufs[i], void *), 185 packet_size); 186 rte_pktmbuf_free(bufs[i]); 187 } 188 189 rte_atomic64_add(&(h->tx_pkts), i); 190 191 return i; 192 } 193 194 static int 195 eth_dev_configure(struct rte_eth_dev *dev __rte_unused) 196 { 197 return 0; 198 } 199 200 static int 201 eth_dev_start(struct rte_eth_dev *dev) 202 { 203 if (dev == NULL) 204 return -EINVAL; 205 206 dev->data->dev_link.link_status = ETH_LINK_UP; 207 return 0; 208 } 209 210 static void 211 eth_dev_stop(struct rte_eth_dev *dev) 212 { 213 if (dev == NULL) 214 return; 215 216 dev->data->dev_link.link_status = ETH_LINK_DOWN; 217 } 218 219 static int 220 eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id, 221 uint16_t nb_rx_desc __rte_unused, 222 unsigned int socket_id __rte_unused, 223 const struct rte_eth_rxconf *rx_conf __rte_unused, 224 struct rte_mempool *mb_pool) 225 { 226 struct rte_mbuf *dummy_packet; 227 struct pmd_internals *internals; 228 unsigned packet_size; 229 230 if ((dev == NULL) || (mb_pool == NULL)) 231 return -EINVAL; 232 233 internals = dev->data->dev_private; 234 235 if (rx_queue_id >= dev->data->nb_rx_queues) 236 return -ENODEV; 237 238 packet_size = internals->packet_size; 239 240 internals->rx_null_queues[rx_queue_id].mb_pool = mb_pool; 241 dev->data->rx_queues[rx_queue_id] = 242 &internals->rx_null_queues[rx_queue_id]; 243 dummy_packet = rte_zmalloc_socket(NULL, 244 packet_size, 0, dev->data->numa_node); 245 if (dummy_packet == NULL) 246 return -ENOMEM; 247 248 internals->rx_null_queues[rx_queue_id].internals = internals; 249 internals->rx_null_queues[rx_queue_id].dummy_packet = dummy_packet; 250 251 return 0; 252 } 253 254 static int 255 eth_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id, 256 uint16_t nb_tx_desc __rte_unused, 257 unsigned int socket_id __rte_unused, 258 const struct rte_eth_txconf *tx_conf __rte_unused) 259 { 260 struct rte_mbuf *dummy_packet; 261 struct pmd_internals *internals; 262 unsigned packet_size; 263 264 if (dev == NULL) 265 return -EINVAL; 266 267 internals = dev->data->dev_private; 268 269 if (tx_queue_id >= dev->data->nb_tx_queues) 270 return -ENODEV; 271 272 packet_size = internals->packet_size; 273 274 dev->data->tx_queues[tx_queue_id] = 275 &internals->tx_null_queues[tx_queue_id]; 276 dummy_packet = rte_zmalloc_socket(NULL, 277 packet_size, 0, dev->data->numa_node); 278 if (dummy_packet == NULL) 279 return -ENOMEM; 280 281 internals->tx_null_queues[tx_queue_id].internals = internals; 282 internals->tx_null_queues[tx_queue_id].dummy_packet = dummy_packet; 283 284 return 0; 285 } 286 287 288 static void 289 eth_dev_info(struct rte_eth_dev *dev, 290 struct rte_eth_dev_info *dev_info) 291 { 292 struct pmd_internals *internals; 293 294 if ((dev == NULL) || (dev_info == NULL)) 295 return; 296 297 internals = dev->data->dev_private; 298 dev_info->driver_name = drivername; 299 dev_info->max_mac_addrs = 1; 300 dev_info->max_rx_pktlen = (uint32_t)-1; 301 dev_info->max_rx_queues = RTE_DIM(internals->rx_null_queues); 302 dev_info->max_tx_queues = RTE_DIM(internals->tx_null_queues); 303 dev_info->min_rx_bufsize = 0; 304 dev_info->pci_dev = NULL; 305 dev_info->reta_size = internals->reta_size; 306 dev_info->flow_type_rss_offloads = internals->flow_type_rss_offloads; 307 } 308 309 static void 310 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats) 311 { 312 unsigned i, num_stats; 313 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0; 314 const struct pmd_internals *internal; 315 316 if ((dev == NULL) || (igb_stats == NULL)) 317 return; 318 319 internal = dev->data->dev_private; 320 num_stats = RTE_MIN((unsigned)RTE_ETHDEV_QUEUE_STAT_CNTRS, 321 RTE_MIN(dev->data->nb_rx_queues, 322 RTE_DIM(internal->rx_null_queues))); 323 for (i = 0; i < num_stats; i++) { 324 igb_stats->q_ipackets[i] = 325 internal->rx_null_queues[i].rx_pkts.cnt; 326 rx_total += igb_stats->q_ipackets[i]; 327 } 328 329 num_stats = RTE_MIN((unsigned)RTE_ETHDEV_QUEUE_STAT_CNTRS, 330 RTE_MIN(dev->data->nb_tx_queues, 331 RTE_DIM(internal->tx_null_queues))); 332 for (i = 0; i < num_stats; i++) { 333 igb_stats->q_opackets[i] = 334 internal->tx_null_queues[i].tx_pkts.cnt; 335 igb_stats->q_errors[i] = 336 internal->tx_null_queues[i].err_pkts.cnt; 337 tx_total += igb_stats->q_opackets[i]; 338 tx_err_total += igb_stats->q_errors[i]; 339 } 340 341 igb_stats->ipackets = rx_total; 342 igb_stats->opackets = tx_total; 343 igb_stats->oerrors = tx_err_total; 344 } 345 346 static void 347 eth_stats_reset(struct rte_eth_dev *dev) 348 { 349 unsigned i; 350 struct pmd_internals *internal; 351 352 if (dev == NULL) 353 return; 354 355 internal = dev->data->dev_private; 356 for (i = 0; i < RTE_DIM(internal->rx_null_queues); i++) 357 internal->rx_null_queues[i].rx_pkts.cnt = 0; 358 for (i = 0; i < RTE_DIM(internal->tx_null_queues); i++) { 359 internal->tx_null_queues[i].tx_pkts.cnt = 0; 360 internal->tx_null_queues[i].err_pkts.cnt = 0; 361 } 362 } 363 364 static void 365 eth_queue_release(void *q) 366 { 367 struct null_queue *nq; 368 369 if (q == NULL) 370 return; 371 372 nq = q; 373 rte_free(nq->dummy_packet); 374 } 375 376 static int 377 eth_link_update(struct rte_eth_dev *dev __rte_unused, 378 int wait_to_complete __rte_unused) { return 0; } 379 380 static int 381 eth_rss_reta_update(struct rte_eth_dev *dev, 382 struct rte_eth_rss_reta_entry64 *reta_conf, uint16_t reta_size) 383 { 384 int i, j; 385 struct pmd_internals *internal = dev->data->dev_private; 386 387 if (reta_size != internal->reta_size) 388 return -EINVAL; 389 390 rte_spinlock_lock(&internal->rss_lock); 391 392 /* Copy RETA table */ 393 for (i = 0; i < (internal->reta_size / RTE_RETA_GROUP_SIZE); i++) { 394 internal->reta_conf[i].mask = reta_conf[i].mask; 395 for (j = 0; j < RTE_RETA_GROUP_SIZE; j++) 396 if ((reta_conf[i].mask >> j) & 0x01) 397 internal->reta_conf[i].reta[j] = reta_conf[i].reta[j]; 398 } 399 400 rte_spinlock_unlock(&internal->rss_lock); 401 402 return 0; 403 } 404 405 static int 406 eth_rss_reta_query(struct rte_eth_dev *dev, 407 struct rte_eth_rss_reta_entry64 *reta_conf, uint16_t reta_size) 408 { 409 int i, j; 410 struct pmd_internals *internal = dev->data->dev_private; 411 412 if (reta_size != internal->reta_size) 413 return -EINVAL; 414 415 rte_spinlock_lock(&internal->rss_lock); 416 417 /* Copy RETA table */ 418 for (i = 0; i < (internal->reta_size / RTE_RETA_GROUP_SIZE); i++) { 419 for (j = 0; j < RTE_RETA_GROUP_SIZE; j++) 420 if ((reta_conf[i].mask >> j) & 0x01) 421 reta_conf[i].reta[j] = internal->reta_conf[i].reta[j]; 422 } 423 424 rte_spinlock_unlock(&internal->rss_lock); 425 426 return 0; 427 } 428 429 static int 430 eth_rss_hash_update(struct rte_eth_dev *dev, struct rte_eth_rss_conf *rss_conf) 431 { 432 struct pmd_internals *internal = dev->data->dev_private; 433 434 rte_spinlock_lock(&internal->rss_lock); 435 436 if ((rss_conf->rss_hf & internal->flow_type_rss_offloads) != 0) 437 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf = 438 rss_conf->rss_hf & internal->flow_type_rss_offloads; 439 440 if (rss_conf->rss_key) 441 rte_memcpy(internal->rss_key, rss_conf->rss_key, 40); 442 443 rte_spinlock_unlock(&internal->rss_lock); 444 445 return 0; 446 } 447 448 static int 449 eth_rss_hash_conf_get(struct rte_eth_dev *dev, 450 struct rte_eth_rss_conf *rss_conf) 451 { 452 struct pmd_internals *internal = dev->data->dev_private; 453 454 rte_spinlock_lock(&internal->rss_lock); 455 456 rss_conf->rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 457 if (rss_conf->rss_key) 458 rte_memcpy(rss_conf->rss_key, internal->rss_key, 40); 459 460 rte_spinlock_unlock(&internal->rss_lock); 461 462 return 0; 463 } 464 465 static const struct eth_dev_ops ops = { 466 .dev_start = eth_dev_start, 467 .dev_stop = eth_dev_stop, 468 .dev_configure = eth_dev_configure, 469 .dev_infos_get = eth_dev_info, 470 .rx_queue_setup = eth_rx_queue_setup, 471 .tx_queue_setup = eth_tx_queue_setup, 472 .rx_queue_release = eth_queue_release, 473 .tx_queue_release = eth_queue_release, 474 .link_update = eth_link_update, 475 .stats_get = eth_stats_get, 476 .stats_reset = eth_stats_reset, 477 .reta_update = eth_rss_reta_update, 478 .reta_query = eth_rss_reta_query, 479 .rss_hash_update = eth_rss_hash_update, 480 .rss_hash_conf_get = eth_rss_hash_conf_get 481 }; 482 483 int 484 eth_dev_null_create(const char *name, 485 const unsigned numa_node, 486 unsigned packet_size, 487 unsigned packet_copy) 488 { 489 const unsigned nb_rx_queues = 1; 490 const unsigned nb_tx_queues = 1; 491 struct rte_eth_dev_data *data = NULL; 492 struct pmd_internals *internals = NULL; 493 struct rte_eth_dev *eth_dev = NULL; 494 495 static const uint8_t default_rss_key[40] = { 496 0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2, 0x41, 0x67, 0x25, 0x3D, 497 0x43, 0xA3, 0x8F, 0xB0, 0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4, 498 0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C, 0x6A, 0x42, 0xB7, 0x3B, 499 0xBE, 0xAC, 0x01, 0xFA 500 }; 501 502 if (name == NULL) 503 return -EINVAL; 504 505 RTE_LOG(INFO, PMD, "Creating null ethdev on numa socket %u\n", 506 numa_node); 507 508 /* now do all data allocation - for eth_dev structure, dummy pci driver 509 * and internal (private) data 510 */ 511 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node); 512 if (data == NULL) 513 goto error; 514 515 internals = rte_zmalloc_socket(name, sizeof(*internals), 0, numa_node); 516 if (internals == NULL) 517 goto error; 518 519 /* reserve an ethdev entry */ 520 eth_dev = rte_eth_dev_allocate(name); 521 if (eth_dev == NULL) 522 goto error; 523 524 /* now put it all together 525 * - store queue data in internals, 526 * - store numa_node info in ethdev data 527 * - point eth_dev_data to internals 528 * - and point eth_dev structure to new eth_dev_data structure 529 */ 530 /* NOTE: we'll replace the data element, of originally allocated eth_dev 531 * so the nulls are local per-process */ 532 533 internals->packet_size = packet_size; 534 internals->packet_copy = packet_copy; 535 internals->port_id = eth_dev->data->port_id; 536 537 internals->flow_type_rss_offloads = ETH_RSS_PROTO_MASK; 538 internals->reta_size = RTE_DIM(internals->reta_conf) * RTE_RETA_GROUP_SIZE; 539 540 rte_memcpy(internals->rss_key, default_rss_key, 40); 541 542 data->dev_private = internals; 543 data->port_id = eth_dev->data->port_id; 544 data->nb_rx_queues = (uint16_t)nb_rx_queues; 545 data->nb_tx_queues = (uint16_t)nb_tx_queues; 546 data->dev_link = pmd_link; 547 data->mac_addrs = ð_addr; 548 strncpy(data->name, eth_dev->data->name, strlen(eth_dev->data->name)); 549 550 eth_dev->data = data; 551 eth_dev->dev_ops = &ops; 552 553 eth_dev->driver = NULL; 554 data->dev_flags = RTE_ETH_DEV_DETACHABLE; 555 data->kdrv = RTE_KDRV_NONE; 556 data->drv_name = drivername; 557 data->numa_node = numa_node; 558 559 /* finally assign rx and tx ops */ 560 if (packet_copy) { 561 eth_dev->rx_pkt_burst = eth_null_copy_rx; 562 eth_dev->tx_pkt_burst = eth_null_copy_tx; 563 } else { 564 eth_dev->rx_pkt_burst = eth_null_rx; 565 eth_dev->tx_pkt_burst = eth_null_tx; 566 } 567 568 return 0; 569 570 error: 571 rte_free(data); 572 rte_free(internals); 573 574 return -1; 575 } 576 577 static inline int 578 get_packet_size_arg(const char *key __rte_unused, 579 const char *value, void *extra_args) 580 { 581 const char *a = value; 582 unsigned *packet_size = extra_args; 583 584 if ((value == NULL) || (extra_args == NULL)) 585 return -EINVAL; 586 587 *packet_size = (unsigned)strtoul(a, NULL, 0); 588 if (*packet_size == UINT_MAX) 589 return -1; 590 591 return 0; 592 } 593 594 static inline int 595 get_packet_copy_arg(const char *key __rte_unused, 596 const char *value, void *extra_args) 597 { 598 const char *a = value; 599 unsigned *packet_copy = extra_args; 600 601 if ((value == NULL) || (extra_args == NULL)) 602 return -EINVAL; 603 604 *packet_copy = (unsigned)strtoul(a, NULL, 0); 605 if (*packet_copy == UINT_MAX) 606 return -1; 607 608 return 0; 609 } 610 611 static int 612 rte_pmd_null_probe(const char *name, const char *params) 613 { 614 unsigned numa_node; 615 unsigned packet_size = default_packet_size; 616 unsigned packet_copy = default_packet_copy; 617 struct rte_kvargs *kvlist = NULL; 618 int ret; 619 620 if (name == NULL) 621 return -EINVAL; 622 623 RTE_LOG(INFO, PMD, "Initializing pmd_null for %s\n", name); 624 625 numa_node = rte_socket_id(); 626 627 if (params != NULL) { 628 kvlist = rte_kvargs_parse(params, valid_arguments); 629 if (kvlist == NULL) 630 return -1; 631 632 if (rte_kvargs_count(kvlist, ETH_NULL_PACKET_SIZE_ARG) == 1) { 633 634 ret = rte_kvargs_process(kvlist, 635 ETH_NULL_PACKET_SIZE_ARG, 636 &get_packet_size_arg, &packet_size); 637 if (ret < 0) 638 goto free_kvlist; 639 } 640 641 if (rte_kvargs_count(kvlist, ETH_NULL_PACKET_COPY_ARG) == 1) { 642 643 ret = rte_kvargs_process(kvlist, 644 ETH_NULL_PACKET_COPY_ARG, 645 &get_packet_copy_arg, &packet_copy); 646 if (ret < 0) 647 goto free_kvlist; 648 } 649 } 650 651 RTE_LOG(INFO, PMD, "Configure pmd_null: packet size is %d, " 652 "packet copy is %s\n", packet_size, 653 packet_copy ? "enabled" : "disabled"); 654 655 ret = eth_dev_null_create(name, numa_node, packet_size, packet_copy); 656 657 free_kvlist: 658 if (kvlist) 659 rte_kvargs_free(kvlist); 660 return ret; 661 } 662 663 static int 664 rte_pmd_null_remove(const char *name) 665 { 666 struct rte_eth_dev *eth_dev = NULL; 667 668 if (name == NULL) 669 return -EINVAL; 670 671 RTE_LOG(INFO, PMD, "Closing null ethdev on numa socket %u\n", 672 rte_socket_id()); 673 674 /* find the ethdev entry */ 675 eth_dev = rte_eth_dev_allocated(name); 676 if (eth_dev == NULL) 677 return -1; 678 679 rte_free(eth_dev->data->dev_private); 680 rte_free(eth_dev->data); 681 682 rte_eth_dev_release_port(eth_dev); 683 684 return 0; 685 } 686 687 static struct rte_vdev_driver pmd_null_drv = { 688 .probe = rte_pmd_null_probe, 689 .remove = rte_pmd_null_remove, 690 }; 691 692 RTE_PMD_REGISTER_VDEV(net_null, pmd_null_drv); 693 RTE_PMD_REGISTER_ALIAS(net_null, eth_null); 694 RTE_PMD_REGISTER_PARAM_STRING(net_null, 695 "size=<int> " 696 "copy=<int>"); 697