test/test/virtual_pmd.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <rte_mbuf.h>
   6 #include <rte_ethdev.h>
   7 #include <rte_ethdev_driver.h>
   8 #include <rte_pci.h>
   9 #include <rte_bus_pci.h>
  10 #include <rte_malloc.h>
  11 #include <rte_memcpy.h>
  12 #include <rte_memory.h>
  13 #include <rte_ring.h>
  14
  15 #include "virtual_pmd.h"
  16
  17 #define MAX_PKT_BURST 512
  18
  19 static const char *virtual_ethdev_driver_name = "Virtual PMD";
  20
  21 struct virtual_ethdev_private {
  22         struct eth_dev_ops dev_ops;
  23         struct rte_eth_stats eth_stats;
  24
  25         struct rte_ring *rx_queue;
  26         struct rte_ring *tx_queue;
  27
  28         int tx_burst_fail_count;
  29 };
  30
  31 struct virtual_ethdev_queue {
  32         int port_id;
  33         int queue_id;
  34 };
  35
  36 static int
  37 virtual_ethdev_start_success(struct rte_eth_dev *eth_dev __rte_unused)
  38 {
  39         eth_dev->data->dev_started = 1;
  40
  41         return 0;
  42 }
  43
  44 static int
  45 virtual_ethdev_start_fail(struct rte_eth_dev *eth_dev __rte_unused)
  46 {
  47         eth_dev->data->dev_started = 0;
  48
  49         return -1;
  50 }
  51 static void  virtual_ethdev_stop(struct rte_eth_dev *eth_dev __rte_unused)
  52 {
  53         void *pkt = NULL;
  54         struct virtual_ethdev_private *prv = eth_dev->data->dev_private;
  55
  56         eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
  57         eth_dev->data->dev_started = 0;
  58         while (rte_ring_dequeue(prv->rx_queue, &pkt) != -ENOENT)
  59                 rte_pktmbuf_free(pkt);
  60
  61         while (rte_ring_dequeue(prv->tx_queue, &pkt) != -ENOENT)
  62                 rte_pktmbuf_free(pkt);
  63 }
  64
  65 static void
  66 virtual_ethdev_close(struct rte_eth_dev *dev __rte_unused)
  67 {}
  68
  69 static int
  70 virtual_ethdev_configure_success(struct rte_eth_dev *dev __rte_unused)
  71 {
  72         return 0;
  73 }
  74
  75 static int
  76 virtual_ethdev_configure_fail(struct rte_eth_dev *dev __rte_unused)
  77 {
  78         return -1;
  79 }
  80
  81 static void
  82 virtual_ethdev_info_get(struct rte_eth_dev *dev __rte_unused,
  83                 struct rte_eth_dev_info *dev_info)
  84 {
  85         dev_info->driver_name = virtual_ethdev_driver_name;
  86         dev_info->max_mac_addrs = 1;
  87
  88         dev_info->max_rx_pktlen = (uint32_t)2048;
  89
  90         dev_info->max_rx_queues = (uint16_t)128;
  91         dev_info->max_tx_queues = (uint16_t)512;
  92
  93         dev_info->min_rx_bufsize = 0;
  94 }
  95
  96 static int
  97 virtual_ethdev_rx_queue_setup_success(struct rte_eth_dev *dev,
  98                 uint16_t rx_queue_id, uint16_t nb_rx_desc __rte_unused,
  99                 unsigned int socket_id,
 100                 const struct rte_eth_rxconf *rx_conf __rte_unused,
 101                 struct rte_mempool *mb_pool __rte_unused)
 102 {
 103         struct virtual_ethdev_queue *rx_q;
 104
 105         rx_q = (struct virtual_ethdev_queue *)rte_zmalloc_socket(NULL,
 106                         sizeof(struct virtual_ethdev_queue), 0, socket_id);
 107
 108         if (rx_q == NULL)
 109                 return -1;
 110
 111         rx_q->port_id = dev->data->port_id;
 112         rx_q->queue_id = rx_queue_id;
 113
 114         dev->data->rx_queues[rx_queue_id] = rx_q;
 115
 116         return 0;
 117 }
 118
 119 static int
 120 virtual_ethdev_rx_queue_setup_fail(struct rte_eth_dev *dev __rte_unused,
 121                 uint16_t rx_queue_id __rte_unused, uint16_t nb_rx_desc __rte_unused,
 122                 unsigned int socket_id __rte_unused,
 123                 const struct rte_eth_rxconf *rx_conf __rte_unused,
 124                 struct rte_mempool *mb_pool __rte_unused)
 125 {
 126         return -1;
 127 }
 128
 129 static int
 130 virtual_ethdev_tx_queue_setup_success(struct rte_eth_dev *dev,
 131                 uint16_t tx_queue_id, uint16_t nb_tx_desc __rte_unused,
 132                 unsigned int socket_id,
 133                 const struct rte_eth_txconf *tx_conf __rte_unused)
 134 {
 135         struct virtual_ethdev_queue *tx_q;
 136
 137         tx_q = (struct virtual_ethdev_queue *)rte_zmalloc_socket(NULL,
 138                         sizeof(struct virtual_ethdev_queue), 0, socket_id);
 139
 140         if (tx_q == NULL)
 141                 return -1;
 142
 143         tx_q->port_id = dev->data->port_id;
 144         tx_q->queue_id = tx_queue_id;
 145
 146         dev->data->tx_queues[tx_queue_id] = tx_q;
 147
 148         return 0;
 149 }
 150
 151 static int
 152 virtual_ethdev_tx_queue_setup_fail(struct rte_eth_dev *dev __rte_unused,
 153                 uint16_t tx_queue_id __rte_unused, uint16_t nb_tx_desc __rte_unused,
 154                 unsigned int socket_id __rte_unused,
 155                 const struct rte_eth_txconf *tx_conf __rte_unused)
 156 {
 157         return -1;
 158 }
 159
 160 static void
 161 virtual_ethdev_rx_queue_release(void *q __rte_unused)
 162 {
 163 }
 164
 165 static void
 166 virtual_ethdev_tx_queue_release(void *q __rte_unused)
 167 {
 168 }
 169
 170 static int
 171 virtual_ethdev_link_update_success(struct rte_eth_dev *bonded_eth_dev,
 172                 int wait_to_complete __rte_unused)
 173 {
 174         if (!bonded_eth_dev->data->dev_started)
 175                 bonded_eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
 176
 177         return 0;
 178 }
 179
 180 static int
 181 virtual_ethdev_link_update_fail(struct rte_eth_dev *bonded_eth_dev __rte_unused,
 182                 int wait_to_complete __rte_unused)
 183 {
 184         return -1;
 185 }
 186
 187 static int
 188 virtual_ethdev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 189 {
 190         struct virtual_ethdev_private *dev_private = dev->data->dev_private;
 191
 192         if (stats)
 193                 rte_memcpy(stats, &dev_private->eth_stats, sizeof(*stats));
 194
 195         return 0;
 196 }
 197
 198 static void
 199 virtual_ethdev_stats_reset(struct rte_eth_dev *dev)
 200 {
 201         struct virtual_ethdev_private *dev_private = dev->data->dev_private;
 202         void *pkt = NULL;
 203
 204         while (rte_ring_dequeue(dev_private->tx_queue, &pkt) == -ENOBUFS)
 205                         rte_pktmbuf_free(pkt);
 206
 207         /* Reset internal statistics */
 208         memset(&dev_private->eth_stats, 0, sizeof(dev_private->eth_stats));
 209 }
 210
 211 static void
 212 virtual_ethdev_promiscuous_mode_enable(struct rte_eth_dev *dev __rte_unused)
 213 {}
 214
 215 static void
 216 virtual_ethdev_promiscuous_mode_disable(struct rte_eth_dev *dev __rte_unused)
 217 {}
 218
 219
 220 static const struct eth_dev_ops virtual_ethdev_default_dev_ops = {
 221         .dev_configure = virtual_ethdev_configure_success,
 222         .dev_start = virtual_ethdev_start_success,
 223         .dev_stop = virtual_ethdev_stop,
 224         .dev_close = virtual_ethdev_close,
 225         .dev_infos_get = virtual_ethdev_info_get,
 226         .rx_queue_setup = virtual_ethdev_rx_queue_setup_success,
 227         .tx_queue_setup = virtual_ethdev_tx_queue_setup_success,
 228         .rx_queue_release = virtual_ethdev_rx_queue_release,
 229         .tx_queue_release = virtual_ethdev_tx_queue_release,
 230         .link_update = virtual_ethdev_link_update_success,
 231         .stats_get = virtual_ethdev_stats_get,
 232         .stats_reset = virtual_ethdev_stats_reset,
 233         .promiscuous_enable = virtual_ethdev_promiscuous_mode_enable,
 234         .promiscuous_disable = virtual_ethdev_promiscuous_mode_disable
 235 };
 236
 237
 238 void
 239 virtual_ethdev_start_fn_set_success(uint16_t port_id, uint8_t success)
 240 {
 241         struct rte_eth_dev *dev = &rte_eth_devices[port_id];
 242         struct virtual_ethdev_private *dev_private = dev->data->dev_private;
 243         struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
 244
 245         if (success)
 246                 dev_ops->dev_start = virtual_ethdev_start_success;
 247         else
 248                 dev_ops->dev_start = virtual_ethdev_start_fail;
 249
 250 }
 251
 252 void
 253 virtual_ethdev_configure_fn_set_success(uint16_t port_id, uint8_t success)
 254 {
 255         struct rte_eth_dev *dev = &rte_eth_devices[port_id];
 256         struct virtual_ethdev_private *dev_private = dev->data->dev_private;
 257         struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
 258
 259         if (success)
 260                 dev_ops->dev_configure = virtual_ethdev_configure_success;
 261         else
 262                 dev_ops->dev_configure = virtual_ethdev_configure_fail;
 263 }
 264
 265 void
 266 virtual_ethdev_rx_queue_setup_fn_set_success(uint16_t port_id, uint8_t success)
 267 {
 268         struct rte_eth_dev *dev = &rte_eth_devices[port_id];
 269         struct virtual_ethdev_private *dev_private = dev->data->dev_private;
 270         struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
 271
 272         if (success)
 273                 dev_ops->rx_queue_setup = virtual_ethdev_rx_queue_setup_success;
 274         else
 275                 dev_ops->rx_queue_setup = virtual_ethdev_rx_queue_setup_fail;
 276 }
 277
 278 void
 279 virtual_ethdev_tx_queue_setup_fn_set_success(uint16_t port_id, uint8_t success)
 280 {
 281         struct rte_eth_dev *dev = &rte_eth_devices[port_id];
 282         struct virtual_ethdev_private *dev_private = dev->data->dev_private;
 283         struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
 284
 285         if (success)
 286                 dev_ops->tx_queue_setup = virtual_ethdev_tx_queue_setup_success;
 287         else
 288                 dev_ops->tx_queue_setup = virtual_ethdev_tx_queue_setup_fail;
 289 }
 290
 291 void
 292 virtual_ethdev_link_update_fn_set_success(uint16_t port_id, uint8_t success)
 293 {
 294         struct rte_eth_dev *dev = &rte_eth_devices[port_id];
 295         struct virtual_ethdev_private *dev_private = dev->data->dev_private;
 296         struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
 297
 298         if (success)
 299                 dev_ops->link_update = virtual_ethdev_link_update_success;
 300         else
 301                 dev_ops->link_update = virtual_ethdev_link_update_fail;
 302 }
 303
 304
 305 static uint16_t
 306 virtual_ethdev_rx_burst_success(void *queue __rte_unused,
 307                                                          struct rte_mbuf **bufs,
 308                                                          uint16_t nb_pkts)
 309 {
 310         struct rte_eth_dev *vrtl_eth_dev;
 311         struct virtual_ethdev_queue *pq_map;
 312         struct virtual_ethdev_private *dev_private;
 313
 314         int rx_count, i;
 315
 316         pq_map = (struct virtual_ethdev_queue *)queue;
 317         vrtl_eth_dev = &rte_eth_devices[pq_map->port_id];
 318         dev_private = vrtl_eth_dev->data->dev_private;
 319
 320         rx_count = rte_ring_dequeue_burst(dev_private->rx_queue, (void **) bufs,
 321                         nb_pkts, NULL);
 322
 323         /* increments ipackets count */
 324         dev_private->eth_stats.ipackets += rx_count;
 325
 326         /* increments ibytes count */
 327         for (i = 0; i < rx_count; i++)
 328                 dev_private->eth_stats.ibytes += rte_pktmbuf_pkt_len(bufs[i]);
 329
 330         return rx_count;
 331 }
 332
 333 static uint16_t
 334 virtual_ethdev_rx_burst_fail(void *queue __rte_unused,
 335                                                          struct rte_mbuf **bufs __rte_unused,
 336                                                          uint16_t nb_pkts __rte_unused)
 337 {
 338         return 0;
 339 }
 340
 341 static uint16_t
 342 virtual_ethdev_tx_burst_success(void *queue, struct rte_mbuf **bufs,
 343                 uint16_t nb_pkts)
 344 {
 345         struct virtual_ethdev_queue *tx_q = queue;
 346
 347         struct rte_eth_dev *vrtl_eth_dev;
 348         struct virtual_ethdev_private *dev_private;
 349
 350         int i;
 351
 352         vrtl_eth_dev = &rte_eth_devices[tx_q->port_id];
 353         dev_private = vrtl_eth_dev->data->dev_private;
 354
 355         if (!vrtl_eth_dev->data->dev_link.link_status)
 356                 nb_pkts = 0;
 357         else
 358                 nb_pkts = rte_ring_enqueue_burst(dev_private->tx_queue, (void **)bufs,
 359                                 nb_pkts, NULL);
 360
 361         /* increment opacket count */
 362         dev_private->eth_stats.opackets += nb_pkts;
 363
 364         /* increment obytes count */
 365         for (i = 0; i < nb_pkts; i++)
 366                 dev_private->eth_stats.obytes += rte_pktmbuf_pkt_len(bufs[i]);
 367
 368         return nb_pkts;
 369 }
 370
 371 static uint16_t
 372 virtual_ethdev_tx_burst_fail(void *queue, struct rte_mbuf **bufs,
 373                 uint16_t nb_pkts)
 374 {
 375         struct rte_eth_dev *vrtl_eth_dev = NULL;
 376         struct virtual_ethdev_queue *tx_q = NULL;
 377         struct virtual_ethdev_private *dev_private = NULL;
 378
 379         int i;
 380
 381         tx_q = queue;
 382         vrtl_eth_dev = &rte_eth_devices[tx_q->port_id];
 383         dev_private = vrtl_eth_dev->data->dev_private;
 384
 385         if (dev_private->tx_burst_fail_count < nb_pkts) {
 386                 int successfully_txd = nb_pkts - dev_private->tx_burst_fail_count;
 387
 388                 /* increment opacket count */
 389                 dev_private->eth_stats.opackets += successfully_txd;
 390
 391                 /* free packets in burst */
 392                 for (i = 0; i < successfully_txd; i++) {
 393                         /* free packets in burst */
 394                         if (bufs[i] != NULL)
 395                                 rte_pktmbuf_free(bufs[i]);
 396
 397                         bufs[i] = NULL;
 398                 }
 399
 400                 return successfully_txd;
 401         }
 402
 403         return 0;
 404 }
 405
 406
 407 void
 408 virtual_ethdev_rx_burst_fn_set_success(uint16_t port_id, uint8_t success)
 409 {
 410         struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
 411
 412         if (success)
 413                 vrtl_eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_success;
 414         else
 415                 vrtl_eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_fail;
 416 }
 417
 418
 419 void
 420 virtual_ethdev_tx_burst_fn_set_success(uint16_t port_id, uint8_t success)
 421 {
 422         struct virtual_ethdev_private *dev_private = NULL;
 423         struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
 424
 425         dev_private = vrtl_eth_dev->data->dev_private;
 426
 427         if (success)
 428                 vrtl_eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_success;
 429         else
 430                 vrtl_eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_fail;
 431
 432         dev_private->tx_burst_fail_count = 0;
 433 }
 434
 435 void
 436 virtual_ethdev_tx_burst_fn_set_tx_pkt_fail_count(uint16_t port_id,
 437                 uint8_t packet_fail_count)
 438 {
 439         struct virtual_ethdev_private *dev_private = NULL;
 440         struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
 441
 442
 443         dev_private = vrtl_eth_dev->data->dev_private;
 444         dev_private->tx_burst_fail_count = packet_fail_count;
 445 }
 446
 447 void
 448 virtual_ethdev_set_link_status(uint16_t port_id, uint8_t link_status)
 449 {
 450         struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
 451
 452         vrtl_eth_dev->data->dev_link.link_status = link_status;
 453 }
 454
 455 void
 456 virtual_ethdev_simulate_link_status_interrupt(uint16_t port_id,
 457                 uint8_t link_status)
 458 {
 459         struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
 460
 461         vrtl_eth_dev->data->dev_link.link_status = link_status;
 462
 463         _rte_eth_dev_callback_process(vrtl_eth_dev, RTE_ETH_EVENT_INTR_LSC,
 464                                       NULL);
 465 }
 466
 467 int
 468 virtual_ethdev_add_mbufs_to_rx_queue(uint16_t port_id,
 469                 struct rte_mbuf **pkt_burst, int burst_length)
 470 {
 471         struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
 472         struct virtual_ethdev_private *dev_private =
 473                         vrtl_eth_dev->data->dev_private;
 474
 475         return rte_ring_enqueue_burst(dev_private->rx_queue, (void **)pkt_burst,
 476                         burst_length, NULL);
 477 }
 478
 479 int
 480 virtual_ethdev_get_mbufs_from_tx_queue(uint16_t port_id,
 481                 struct rte_mbuf **pkt_burst, int burst_length)
 482 {
 483         struct virtual_ethdev_private *dev_private;
 484         struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
 485
 486         dev_private = vrtl_eth_dev->data->dev_private;
 487         return rte_ring_dequeue_burst(dev_private->tx_queue, (void **)pkt_burst,
 488                 burst_length, NULL);
 489 }
 490
 491
 492 int
 493 virtual_ethdev_create(const char *name, struct ether_addr *mac_addr,
 494                 uint8_t socket_id, uint8_t isr_support)
 495 {
 496         struct rte_pci_device *pci_dev = NULL;
 497         struct rte_eth_dev *eth_dev = NULL;
 498         struct rte_pci_driver *pci_drv = NULL;
 499         struct rte_pci_id *id_table = NULL;
 500         struct virtual_ethdev_private *dev_private = NULL;
 501         char name_buf[RTE_RING_NAMESIZE];
 502
 503
 504         /* now do all data allocation - for eth_dev structure, dummy pci driver
 505          * and internal (dev_private) data
 506          */
 507
 508         pci_dev = rte_zmalloc_socket(name, sizeof(*pci_dev), 0, socket_id);
 509         if (pci_dev == NULL)
 510                 goto err;
 511
 512         pci_drv = rte_zmalloc_socket(name, sizeof(*pci_drv), 0, socket_id);
 513         if (pci_drv == NULL)
 514                 goto err;
 515
 516         id_table = rte_zmalloc_socket(name, sizeof(*id_table), 0, socket_id);
 517         if (id_table == NULL)
 518                 goto err;
 519         id_table->device_id = 0xBEEF;
 520
 521         dev_private = rte_zmalloc_socket(name, sizeof(*dev_private), 0, socket_id);
 522         if (dev_private == NULL)
 523                 goto err;
 524
 525         snprintf(name_buf, sizeof(name_buf), "%s_rxQ", name);
 526         dev_private->rx_queue = rte_ring_create(name_buf, MAX_PKT_BURST, socket_id,
 527                         0);
 528         if (dev_private->rx_queue == NULL)
 529                 goto err;
 530
 531         snprintf(name_buf, sizeof(name_buf), "%s_txQ", name);
 532         dev_private->tx_queue = rte_ring_create(name_buf, MAX_PKT_BURST, socket_id,
 533                         0);
 534         if (dev_private->tx_queue == NULL)
 535                 goto err;
 536
 537         /* reserve an ethdev entry */
 538         eth_dev = rte_eth_dev_allocate(name);
 539         if (eth_dev == NULL)
 540                 goto err;
 541
 542         pci_dev->device.numa_node = socket_id;
 543         pci_dev->device.name = eth_dev->data->name;
 544         pci_drv->driver.name = virtual_ethdev_driver_name;
 545         pci_drv->id_table = id_table;
 546
 547         if (isr_support)
 548                 pci_drv->drv_flags |= RTE_PCI_DRV_INTR_LSC;
 549         else
 550                 pci_drv->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
 551
 552
 553         eth_dev->device = &pci_dev->device;
 554         eth_dev->device->driver = &pci_drv->driver;
 555
 556         eth_dev->data->nb_rx_queues = (uint16_t)1;
 557         eth_dev->data->nb_tx_queues = (uint16_t)1;
 558
 559         eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
 560         eth_dev->data->dev_link.link_speed = ETH_SPEED_NUM_10G;
 561         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
 562
 563         eth_dev->data->mac_addrs = rte_zmalloc(name, ETHER_ADDR_LEN, 0);
 564         if (eth_dev->data->mac_addrs == NULL)
 565                 goto err;
 566
 567         memcpy(eth_dev->data->mac_addrs, mac_addr,
 568                         sizeof(*eth_dev->data->mac_addrs));
 569
 570         eth_dev->data->dev_started = 0;
 571         eth_dev->data->promiscuous = 0;
 572         eth_dev->data->scattered_rx = 0;
 573         eth_dev->data->all_multicast = 0;
 574
 575         eth_dev->data->dev_private = dev_private;
 576
 577         /* Copy default device operation functions */
 578         dev_private->dev_ops = virtual_ethdev_default_dev_ops;
 579         eth_dev->dev_ops = &dev_private->dev_ops;
 580
 581         pci_dev->device.driver = &pci_drv->driver;
 582         eth_dev->device = &pci_dev->device;
 583
 584         eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_success;
 585         eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_success;
 586
 587         return eth_dev->data->port_id;
 588
 589 err:
 590         rte_free(pci_dev);
 591         rte_free(pci_drv);
 592         rte_free(id_table);
 593         rte_free(dev_private);
 594
 595         return -1;
 596 }