drivers/net/pcap/rte_eth_pcap.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2016 Intel Corporation.
   3  * Copyright(c) 2014 6WIND S.A.
   4  * All rights reserved.
   5  */
   6
   7 #include <time.h>
   8
   9 #include <net/if.h>
  10 #include <sys/socket.h>
  11 #include <sys/ioctl.h>
  12 #include <unistd.h>
  13
  14 #if defined(RTE_EXEC_ENV_FREEBSD)
  15 #include <sys/sysctl.h>
  16 #include <net/if_dl.h>
  17 #endif
  18
  19 #include <pcap.h>
  20
  21 #include <rte_cycles.h>
  22 #include <rte_ethdev_driver.h>
  23 #include <rte_ethdev_vdev.h>
  24 #include <rte_kvargs.h>
  25 #include <rte_malloc.h>
  26 #include <rte_mbuf.h>
  27 #include <rte_bus_vdev.h>
  28 #include <rte_string_fns.h>
  29
  30 #define RTE_ETH_PCAP_SNAPSHOT_LEN 65535
  31 #define RTE_ETH_PCAP_SNAPLEN RTE_ETHER_MAX_JUMBO_FRAME_LEN
  32 #define RTE_ETH_PCAP_PROMISC 1
  33 #define RTE_ETH_PCAP_TIMEOUT -1
  34
  35 #define ETH_PCAP_RX_PCAP_ARG  "rx_pcap"
  36 #define ETH_PCAP_TX_PCAP_ARG  "tx_pcap"
  37 #define ETH_PCAP_RX_IFACE_ARG "rx_iface"
  38 #define ETH_PCAP_RX_IFACE_IN_ARG "rx_iface_in"
  39 #define ETH_PCAP_TX_IFACE_ARG "tx_iface"
  40 #define ETH_PCAP_IFACE_ARG    "iface"
  41 #define ETH_PCAP_PHY_MAC_ARG  "phy_mac"
  42
  43 #define ETH_PCAP_ARG_MAXLEN     64
  44
  45 #define RTE_PMD_PCAP_MAX_QUEUES 16
  46
  47 static char errbuf[PCAP_ERRBUF_SIZE];
  48 static unsigned char tx_pcap_data[RTE_ETH_PCAP_SNAPLEN];
  49 static struct timeval start_time;
  50 static uint64_t start_cycles;
  51 static uint64_t hz;
  52 static uint8_t iface_idx;
  53
  54 struct queue_stat {
  55         volatile unsigned long pkts;
  56         volatile unsigned long bytes;
  57         volatile unsigned long err_pkts;
  58 };
  59
  60 struct pcap_rx_queue {
  61         uint16_t port_id;
  62         uint16_t queue_id;
  63         struct rte_mempool *mb_pool;
  64         struct queue_stat rx_stat;
  65         char name[PATH_MAX];
  66         char type[ETH_PCAP_ARG_MAXLEN];
  67 };
  68
  69 struct pcap_tx_queue {
  70         uint16_t port_id;
  71         uint16_t queue_id;
  72         struct queue_stat tx_stat;
  73         char name[PATH_MAX];
  74         char type[ETH_PCAP_ARG_MAXLEN];
  75 };
  76
  77 struct pmd_internals {
  78         struct pcap_rx_queue rx_queue[RTE_PMD_PCAP_MAX_QUEUES];
  79         struct pcap_tx_queue tx_queue[RTE_PMD_PCAP_MAX_QUEUES];
  80         char devargs[ETH_PCAP_ARG_MAXLEN];
  81         struct rte_ether_addr eth_addr;
  82         int if_index;
  83         int single_iface;
  84         int phy_mac;
  85 };
  86
  87 struct pmd_process_private {
  88         pcap_t *rx_pcap[RTE_PMD_PCAP_MAX_QUEUES];
  89         pcap_t *tx_pcap[RTE_PMD_PCAP_MAX_QUEUES];
  90         pcap_dumper_t *tx_dumper[RTE_PMD_PCAP_MAX_QUEUES];
  91 };
  92
  93 struct pmd_devargs {
  94         unsigned int num_of_queue;
  95         struct devargs_queue {
  96                 pcap_dumper_t *dumper;
  97                 pcap_t *pcap;
  98                 const char *name;
  99                 const char *type;
 100         } queue[RTE_PMD_PCAP_MAX_QUEUES];
 101         int phy_mac;
 102 };
 103
 104 struct pmd_devargs_all {
 105         struct pmd_devargs rx_queues;
 106         struct pmd_devargs tx_queues;
 107         int single_iface;
 108         unsigned int is_tx_pcap;
 109         unsigned int is_tx_iface;
 110 };
 111
 112 static const char *valid_arguments[] = {
 113         ETH_PCAP_RX_PCAP_ARG,
 114         ETH_PCAP_TX_PCAP_ARG,
 115         ETH_PCAP_RX_IFACE_ARG,
 116         ETH_PCAP_RX_IFACE_IN_ARG,
 117         ETH_PCAP_TX_IFACE_ARG,
 118         ETH_PCAP_IFACE_ARG,
 119         ETH_PCAP_PHY_MAC_ARG,
 120         NULL
 121 };
 122
 123 static struct rte_eth_link pmd_link = {
 124                 .link_speed = ETH_SPEED_NUM_10G,
 125                 .link_duplex = ETH_LINK_FULL_DUPLEX,
 126                 .link_status = ETH_LINK_DOWN,
 127                 .link_autoneg = ETH_LINK_FIXED,
 128 };
 129
 130 static int eth_pcap_logtype;
 131
 132 #define PMD_LOG(level, fmt, args...) \
 133         rte_log(RTE_LOG_ ## level, eth_pcap_logtype, \
 134                 "%s(): " fmt "\n", __func__, ##args)
 135
 136 static int
 137 eth_pcap_rx_jumbo(struct rte_mempool *mb_pool, struct rte_mbuf *mbuf,
 138                 const u_char *data, uint16_t data_len)
 139 {
 140         /* Copy the first segment. */
 141         uint16_t len = rte_pktmbuf_tailroom(mbuf);
 142         struct rte_mbuf *m = mbuf;
 143
 144         rte_memcpy(rte_pktmbuf_append(mbuf, len), data, len);
 145         data_len -= len;
 146         data += len;
 147
 148         while (data_len > 0) {
 149                 /* Allocate next mbuf and point to that. */
 150                 m->next = rte_pktmbuf_alloc(mb_pool);
 151
 152                 if (unlikely(!m->next))
 153                         return -1;
 154
 155                 m = m->next;
 156
 157                 /* Headroom is not needed in chained mbufs. */
 158                 rte_pktmbuf_prepend(m, rte_pktmbuf_headroom(m));
 159                 m->pkt_len = 0;
 160                 m->data_len = 0;
 161
 162                 /* Copy next segment. */
 163                 len = RTE_MIN(rte_pktmbuf_tailroom(m), data_len);
 164                 rte_memcpy(rte_pktmbuf_append(m, len), data, len);
 165
 166                 mbuf->nb_segs++;
 167                 data_len -= len;
 168                 data += len;
 169         }
 170
 171         return mbuf->nb_segs;
 172 }
 173
 174 /* Copy data from mbuf chain to a buffer suitable for writing to a PCAP file. */
 175 static void
 176 eth_pcap_gather_data(unsigned char *data, struct rte_mbuf *mbuf)
 177 {
 178         uint16_t data_len = 0;
 179
 180         while (mbuf) {
 181                 rte_memcpy(data + data_len, rte_pktmbuf_mtod(mbuf, void *),
 182                         mbuf->data_len);
 183
 184                 data_len += mbuf->data_len;
 185                 mbuf = mbuf->next;
 186         }
 187 }
 188
 189 static uint16_t
 190 eth_pcap_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 191 {
 192         unsigned int i;
 193         struct pcap_pkthdr header;
 194         struct pmd_process_private *pp;
 195         const u_char *packet;
 196         struct rte_mbuf *mbuf;
 197         struct pcap_rx_queue *pcap_q = queue;
 198         uint16_t num_rx = 0;
 199         uint16_t buf_size;
 200         uint32_t rx_bytes = 0;
 201         pcap_t *pcap;
 202
 203         pp = rte_eth_devices[pcap_q->port_id].process_private;
 204         pcap = pp->rx_pcap[pcap_q->queue_id];
 205
 206         if (unlikely(pcap == NULL || nb_pkts == 0))
 207                 return 0;
 208
 209         /* Reads the given number of packets from the pcap file one by one
 210          * and copies the packet data into a newly allocated mbuf to return.
 211          */
 212         for (i = 0; i < nb_pkts; i++) {
 213                 /* Get the next PCAP packet */
 214                 packet = pcap_next(pcap, &header);
 215                 if (unlikely(packet == NULL))
 216                         break;
 217
 218                 mbuf = rte_pktmbuf_alloc(pcap_q->mb_pool);
 219                 if (unlikely(mbuf == NULL))
 220                         break;
 221
 222                 /* Now get the space available for data in the mbuf */
 223                 buf_size = rte_pktmbuf_data_room_size(pcap_q->mb_pool) -
 224                                 RTE_PKTMBUF_HEADROOM;
 225
 226                 if (header.caplen <= buf_size) {
 227                         /* pcap packet will fit in the mbuf, can copy it */
 228                         rte_memcpy(rte_pktmbuf_mtod(mbuf, void *), packet,
 229                                         header.caplen);
 230                         mbuf->data_len = (uint16_t)header.caplen;
 231                 } else {
 232                         /* Try read jumbo frame into multi mbufs. */
 233                         if (unlikely(eth_pcap_rx_jumbo(pcap_q->mb_pool,
 234                                                        mbuf,
 235                                                        packet,
 236                                                        header.caplen) == -1)) {
 237                                 rte_pktmbuf_free(mbuf);
 238                                 break;
 239                         }
 240                 }
 241
 242                 mbuf->pkt_len = (uint16_t)header.caplen;
 243                 mbuf->port = pcap_q->port_id;
 244                 bufs[num_rx] = mbuf;
 245                 num_rx++;
 246                 rx_bytes += header.caplen;
 247         }
 248         pcap_q->rx_stat.pkts += num_rx;
 249         pcap_q->rx_stat.bytes += rx_bytes;
 250
 251         return num_rx;
 252 }
 253
 254 static inline void
 255 calculate_timestamp(struct timeval *ts) {
 256         uint64_t cycles;
 257         struct timeval cur_time;
 258
 259         cycles = rte_get_timer_cycles() - start_cycles;
 260         cur_time.tv_sec = cycles / hz;
 261         cur_time.tv_usec = (cycles % hz) * 1e6 / hz;
 262         timeradd(&start_time, &cur_time, ts);
 263 }
 264
 265 /*
 266  * Callback to handle writing packets to a pcap file.
 267  */
 268 static uint16_t
 269 eth_pcap_tx_dumper(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 270 {
 271         unsigned int i;
 272         struct rte_mbuf *mbuf;
 273         struct pmd_process_private *pp;
 274         struct pcap_tx_queue *dumper_q = queue;
 275         uint16_t num_tx = 0;
 276         uint32_t tx_bytes = 0;
 277         struct pcap_pkthdr header;
 278         pcap_dumper_t *dumper;
 279
 280         pp = rte_eth_devices[dumper_q->port_id].process_private;
 281         dumper = pp->tx_dumper[dumper_q->queue_id];
 282
 283         if (dumper == NULL || nb_pkts == 0)
 284                 return 0;
 285
 286         /* writes the nb_pkts packets to the previously opened pcap file
 287          * dumper */
 288         for (i = 0; i < nb_pkts; i++) {
 289                 mbuf = bufs[i];
 290                 calculate_timestamp(&header.ts);
 291                 header.len = mbuf->pkt_len;
 292                 header.caplen = header.len;
 293
 294                 if (likely(mbuf->nb_segs == 1)) {
 295                         pcap_dump((u_char *)dumper, &header,
 296                                   rte_pktmbuf_mtod(mbuf, void*));
 297                 } else {
 298                         if (mbuf->pkt_len <= RTE_ETHER_MAX_JUMBO_FRAME_LEN) {
 299                                 eth_pcap_gather_data(tx_pcap_data, mbuf);
 300                                 pcap_dump((u_char *)dumper, &header,
 301                                           tx_pcap_data);
 302                         } else {
 303                                 PMD_LOG(ERR,
 304                                         "Dropping PCAP packet. Size (%d) > max jumbo size (%d).",
 305                                         mbuf->pkt_len,
 306                                         RTE_ETHER_MAX_JUMBO_FRAME_LEN);
 307
 308                                 rte_pktmbuf_free(mbuf);
 309                                 break;
 310                         }
 311                 }
 312
 313                 num_tx++;
 314                 tx_bytes += mbuf->pkt_len;
 315                 rte_pktmbuf_free(mbuf);
 316         }
 317
 318         /*
 319          * Since there's no place to hook a callback when the forwarding
 320          * process stops and to make sure the pcap file is actually written,
 321          * we flush the pcap dumper within each burst.
 322          */
 323         pcap_dump_flush(dumper);
 324         dumper_q->tx_stat.pkts += num_tx;
 325         dumper_q->tx_stat.bytes += tx_bytes;
 326         dumper_q->tx_stat.err_pkts += nb_pkts - num_tx;
 327
 328         return num_tx;
 329 }
 330
 331 /*
 332  * Callback to handle sending packets through a real NIC.
 333  */
 334 static uint16_t
 335 eth_pcap_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 336 {
 337         unsigned int i;
 338         int ret;
 339         struct rte_mbuf *mbuf;
 340         struct pmd_process_private *pp;
 341         struct pcap_tx_queue *tx_queue = queue;
 342         uint16_t num_tx = 0;
 343         uint32_t tx_bytes = 0;
 344         pcap_t *pcap;
 345
 346         pp = rte_eth_devices[tx_queue->port_id].process_private;
 347         pcap = pp->tx_pcap[tx_queue->queue_id];
 348
 349         if (unlikely(nb_pkts == 0 || pcap == NULL))
 350                 return 0;
 351
 352         for (i = 0; i < nb_pkts; i++) {
 353                 mbuf = bufs[i];
 354
 355                 if (likely(mbuf->nb_segs == 1)) {
 356                         ret = pcap_sendpacket(pcap,
 357                                         rte_pktmbuf_mtod(mbuf, u_char *),
 358                                         mbuf->pkt_len);
 359                 } else {
 360                         if (mbuf->pkt_len <= RTE_ETHER_MAX_JUMBO_FRAME_LEN) {
 361                                 eth_pcap_gather_data(tx_pcap_data, mbuf);
 362                                 ret = pcap_sendpacket(pcap,
 363                                                 tx_pcap_data, mbuf->pkt_len);
 364                         } else {
 365                                 PMD_LOG(ERR,
 366                                         "Dropping PCAP packet. Size (%d) > max jumbo size (%d).",
 367                                         mbuf->pkt_len,
 368                                         RTE_ETHER_MAX_JUMBO_FRAME_LEN);
 369
 370                                 rte_pktmbuf_free(mbuf);
 371                                 break;
 372                         }
 373                 }
 374
 375                 if (unlikely(ret != 0))
 376                         break;
 377                 num_tx++;
 378                 tx_bytes += mbuf->pkt_len;
 379                 rte_pktmbuf_free(mbuf);
 380         }
 381
 382         tx_queue->tx_stat.pkts += num_tx;
 383         tx_queue->tx_stat.bytes += tx_bytes;
 384         tx_queue->tx_stat.err_pkts += nb_pkts - num_tx;
 385
 386         return num_tx;
 387 }
 388
 389 /*
 390  * pcap_open_live wrapper function
 391  */
 392 static inline int
 393 open_iface_live(const char *iface, pcap_t **pcap) {
 394         *pcap = pcap_open_live(iface, RTE_ETH_PCAP_SNAPLEN,
 395                         RTE_ETH_PCAP_PROMISC, RTE_ETH_PCAP_TIMEOUT, errbuf);
 396
 397         if (*pcap == NULL) {
 398                 PMD_LOG(ERR, "Couldn't open %s: %s", iface, errbuf);
 399                 return -1;
 400         }
 401
 402         return 0;
 403 }
 404
 405 static int
 406 open_single_iface(const char *iface, pcap_t **pcap)
 407 {
 408         if (open_iface_live(iface, pcap) < 0) {
 409                 PMD_LOG(ERR, "Couldn't open interface %s", iface);
 410                 return -1;
 411         }
 412
 413         return 0;
 414 }
 415
 416 static int
 417 open_single_tx_pcap(const char *pcap_filename, pcap_dumper_t **dumper)
 418 {
 419         pcap_t *tx_pcap;
 420
 421         /*
 422          * We need to create a dummy empty pcap_t to use it
 423          * with pcap_dump_open(). We create big enough an Ethernet
 424          * pcap holder.
 425          */
 426         tx_pcap = pcap_open_dead(DLT_EN10MB, RTE_ETH_PCAP_SNAPSHOT_LEN);
 427         if (tx_pcap == NULL) {
 428                 PMD_LOG(ERR, "Couldn't create dead pcap");
 429                 return -1;
 430         }
 431
 432         /* The dumper is created using the previous pcap_t reference */
 433         *dumper = pcap_dump_open(tx_pcap, pcap_filename);
 434         if (*dumper == NULL) {
 435                 pcap_close(tx_pcap);
 436                 PMD_LOG(ERR, "Couldn't open %s for writing.",
 437                         pcap_filename);
 438                 return -1;
 439         }
 440
 441         pcap_close(tx_pcap);
 442         return 0;
 443 }
 444
 445 static int
 446 open_single_rx_pcap(const char *pcap_filename, pcap_t **pcap)
 447 {
 448         *pcap = pcap_open_offline(pcap_filename, errbuf);
 449         if (*pcap == NULL) {
 450                 PMD_LOG(ERR, "Couldn't open %s: %s", pcap_filename,
 451                         errbuf);
 452                 return -1;
 453         }
 454
 455         return 0;
 456 }
 457
 458 static int
 459 eth_dev_start(struct rte_eth_dev *dev)
 460 {
 461         unsigned int i;
 462         struct pmd_internals *internals = dev->data->dev_private;
 463         struct pmd_process_private *pp = dev->process_private;
 464         struct pcap_tx_queue *tx;
 465         struct pcap_rx_queue *rx;
 466
 467         /* Special iface case. Single pcap is open and shared between tx/rx. */
 468         if (internals->single_iface) {
 469                 tx = &internals->tx_queue[0];
 470                 rx = &internals->rx_queue[0];
 471
 472                 if (!pp->tx_pcap[0] &&
 473                         strcmp(tx->type, ETH_PCAP_IFACE_ARG) == 0) {
 474                         if (open_single_iface(tx->name, &pp->tx_pcap[0]) < 0)
 475                                 return -1;
 476                         pp->rx_pcap[0] = pp->tx_pcap[0];
 477                 }
 478
 479                 goto status_up;
 480         }
 481
 482         /* If not open already, open tx pcaps/dumpers */
 483         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 484                 tx = &internals->tx_queue[i];
 485
 486                 if (!pp->tx_dumper[i] &&
 487                                 strcmp(tx->type, ETH_PCAP_TX_PCAP_ARG) == 0) {
 488                         if (open_single_tx_pcap(tx->name,
 489                                 &pp->tx_dumper[i]) < 0)
 490                                 return -1;
 491                 } else if (!pp->tx_pcap[i] &&
 492                                 strcmp(tx->type, ETH_PCAP_TX_IFACE_ARG) == 0) {
 493                         if (open_single_iface(tx->name, &pp->tx_pcap[i]) < 0)
 494                                 return -1;
 495                 }
 496         }
 497
 498         /* If not open already, open rx pcaps */
 499         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 500                 rx = &internals->rx_queue[i];
 501
 502                 if (pp->rx_pcap[i] != NULL)
 503                         continue;
 504
 505                 if (strcmp(rx->type, ETH_PCAP_RX_PCAP_ARG) == 0) {
 506                         if (open_single_rx_pcap(rx->name, &pp->rx_pcap[i]) < 0)
 507                                 return -1;
 508                 } else if (strcmp(rx->type, ETH_PCAP_RX_IFACE_ARG) == 0) {
 509                         if (open_single_iface(rx->name, &pp->rx_pcap[i]) < 0)
 510                                 return -1;
 511                 }
 512         }
 513
 514 status_up:
 515         for (i = 0; i < dev->data->nb_rx_queues; i++)
 516                 dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;
 517
 518         for (i = 0; i < dev->data->nb_tx_queues; i++)
 519                 dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;
 520
 521         dev->data->dev_link.link_status = ETH_LINK_UP;
 522
 523         return 0;
 524 }
 525
 526 /*
 527  * This function gets called when the current port gets stopped.
 528  * Is the only place for us to close all the tx streams dumpers.
 529  * If not called the dumpers will be flushed within each tx burst.
 530  */
 531 static void
 532 eth_dev_stop(struct rte_eth_dev *dev)
 533 {
 534         unsigned int i;
 535         struct pmd_internals *internals = dev->data->dev_private;
 536         struct pmd_process_private *pp = dev->process_private;
 537
 538         /* Special iface case. Single pcap is open and shared between tx/rx. */
 539         if (internals->single_iface) {
 540                 pcap_close(pp->tx_pcap[0]);
 541                 pp->tx_pcap[0] = NULL;
 542                 pp->rx_pcap[0] = NULL;
 543                 goto status_down;
 544         }
 545
 546         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 547                 if (pp->tx_dumper[i] != NULL) {
 548                         pcap_dump_close(pp->tx_dumper[i]);
 549                         pp->tx_dumper[i] = NULL;
 550                 }
 551
 552                 if (pp->tx_pcap[i] != NULL) {
 553                         pcap_close(pp->tx_pcap[i]);
 554                         pp->tx_pcap[i] = NULL;
 555                 }
 556         }
 557
 558         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 559                 if (pp->rx_pcap[i] != NULL) {
 560                         pcap_close(pp->rx_pcap[i]);
 561                         pp->rx_pcap[i] = NULL;
 562                 }
 563         }
 564
 565 status_down:
 566         for (i = 0; i < dev->data->nb_rx_queues; i++)
 567                 dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
 568
 569         for (i = 0; i < dev->data->nb_tx_queues; i++)
 570                 dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
 571
 572         dev->data->dev_link.link_status = ETH_LINK_DOWN;
 573 }
 574
 575 static int
 576 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
 577 {
 578         return 0;
 579 }
 580
 581 static void
 582 eth_dev_info(struct rte_eth_dev *dev,
 583                 struct rte_eth_dev_info *dev_info)
 584 {
 585         struct pmd_internals *internals = dev->data->dev_private;
 586
 587         dev_info->if_index = internals->if_index;
 588         dev_info->max_mac_addrs = 1;
 589         dev_info->max_rx_pktlen = (uint32_t) -1;
 590         dev_info->max_rx_queues = dev->data->nb_rx_queues;
 591         dev_info->max_tx_queues = dev->data->nb_tx_queues;
 592         dev_info->min_rx_bufsize = 0;
 593 }
 594
 595 static int
 596 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 597 {
 598         unsigned int i;
 599         unsigned long rx_packets_total = 0, rx_bytes_total = 0;
 600         unsigned long tx_packets_total = 0, tx_bytes_total = 0;
 601         unsigned long tx_packets_err_total = 0;
 602         const struct pmd_internals *internal = dev->data->dev_private;
 603
 604         for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
 605                         i < dev->data->nb_rx_queues; i++) {
 606                 stats->q_ipackets[i] = internal->rx_queue[i].rx_stat.pkts;
 607                 stats->q_ibytes[i] = internal->rx_queue[i].rx_stat.bytes;
 608                 rx_packets_total += stats->q_ipackets[i];
 609                 rx_bytes_total += stats->q_ibytes[i];
 610         }
 611
 612         for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
 613                         i < dev->data->nb_tx_queues; i++) {
 614                 stats->q_opackets[i] = internal->tx_queue[i].tx_stat.pkts;
 615                 stats->q_obytes[i] = internal->tx_queue[i].tx_stat.bytes;
 616                 tx_packets_total += stats->q_opackets[i];
 617                 tx_bytes_total += stats->q_obytes[i];
 618                 tx_packets_err_total += internal->tx_queue[i].tx_stat.err_pkts;
 619         }
 620
 621         stats->ipackets = rx_packets_total;
 622         stats->ibytes = rx_bytes_total;
 623         stats->opackets = tx_packets_total;
 624         stats->obytes = tx_bytes_total;
 625         stats->oerrors = tx_packets_err_total;
 626
 627         return 0;
 628 }
 629
 630 static void
 631 eth_stats_reset(struct rte_eth_dev *dev)
 632 {
 633         unsigned int i;
 634         struct pmd_internals *internal = dev->data->dev_private;
 635
 636         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 637                 internal->rx_queue[i].rx_stat.pkts = 0;
 638                 internal->rx_queue[i].rx_stat.bytes = 0;
 639         }
 640
 641         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 642                 internal->tx_queue[i].tx_stat.pkts = 0;
 643                 internal->tx_queue[i].tx_stat.bytes = 0;
 644                 internal->tx_queue[i].tx_stat.err_pkts = 0;
 645         }
 646 }
 647
 648 static void
 649 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
 650 {
 651 }
 652
 653 static void
 654 eth_queue_release(void *q __rte_unused)
 655 {
 656 }
 657
 658 static int
 659 eth_link_update(struct rte_eth_dev *dev __rte_unused,
 660                 int wait_to_complete __rte_unused)
 661 {
 662         return 0;
 663 }
 664
 665 static int
 666 eth_rx_queue_setup(struct rte_eth_dev *dev,
 667                 uint16_t rx_queue_id,
 668                 uint16_t nb_rx_desc __rte_unused,
 669                 unsigned int socket_id __rte_unused,
 670                 const struct rte_eth_rxconf *rx_conf __rte_unused,
 671                 struct rte_mempool *mb_pool)
 672 {
 673         struct pmd_internals *internals = dev->data->dev_private;
 674         struct pcap_rx_queue *pcap_q = &internals->rx_queue[rx_queue_id];
 675
 676         pcap_q->mb_pool = mb_pool;
 677         pcap_q->port_id = dev->data->port_id;
 678         pcap_q->queue_id = rx_queue_id;
 679         dev->data->rx_queues[rx_queue_id] = pcap_q;
 680
 681         return 0;
 682 }
 683
 684 static int
 685 eth_tx_queue_setup(struct rte_eth_dev *dev,
 686                 uint16_t tx_queue_id,
 687                 uint16_t nb_tx_desc __rte_unused,
 688                 unsigned int socket_id __rte_unused,
 689                 const struct rte_eth_txconf *tx_conf __rte_unused)
 690 {
 691         struct pmd_internals *internals = dev->data->dev_private;
 692         struct pcap_tx_queue *pcap_q = &internals->tx_queue[tx_queue_id];
 693
 694         pcap_q->port_id = dev->data->port_id;
 695         pcap_q->queue_id = tx_queue_id;
 696         dev->data->tx_queues[tx_queue_id] = pcap_q;
 697
 698         return 0;
 699 }
 700
 701 static int
 702 eth_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 703 {
 704         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 705
 706         return 0;
 707 }
 708
 709 static int
 710 eth_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 711 {
 712         dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 713
 714         return 0;
 715 }
 716
 717 static int
 718 eth_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 719 {
 720         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 721
 722         return 0;
 723 }
 724
 725 static int
 726 eth_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 727 {
 728         dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 729
 730         return 0;
 731 }
 732
 733 static const struct eth_dev_ops ops = {
 734         .dev_start = eth_dev_start,
 735         .dev_stop = eth_dev_stop,
 736         .dev_close = eth_dev_close,
 737         .dev_configure = eth_dev_configure,
 738         .dev_infos_get = eth_dev_info,
 739         .rx_queue_setup = eth_rx_queue_setup,
 740         .tx_queue_setup = eth_tx_queue_setup,
 741         .rx_queue_start = eth_rx_queue_start,
 742         .tx_queue_start = eth_tx_queue_start,
 743         .rx_queue_stop = eth_rx_queue_stop,
 744         .tx_queue_stop = eth_tx_queue_stop,
 745         .rx_queue_release = eth_queue_release,
 746         .tx_queue_release = eth_queue_release,
 747         .link_update = eth_link_update,
 748         .stats_get = eth_stats_get,
 749         .stats_reset = eth_stats_reset,
 750 };
 751
 752 static int
 753 add_queue(struct pmd_devargs *pmd, const char *name, const char *type,
 754                 pcap_t *pcap, pcap_dumper_t *dumper)
 755 {
 756         if (pmd->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES)
 757                 return -1;
 758         if (pcap)
 759                 pmd->queue[pmd->num_of_queue].pcap = pcap;
 760         if (dumper)
 761                 pmd->queue[pmd->num_of_queue].dumper = dumper;
 762         pmd->queue[pmd->num_of_queue].name = name;
 763         pmd->queue[pmd->num_of_queue].type = type;
 764         pmd->num_of_queue++;
 765         return 0;
 766 }
 767
 768 /*
 769  * Function handler that opens the pcap file for reading a stores a
 770  * reference of it for use it later on.
 771  */
 772 static int
 773 open_rx_pcap(const char *key, const char *value, void *extra_args)
 774 {
 775         const char *pcap_filename = value;
 776         struct pmd_devargs *rx = extra_args;
 777         pcap_t *pcap = NULL;
 778
 779         if (open_single_rx_pcap(pcap_filename, &pcap) < 0)
 780                 return -1;
 781
 782         if (add_queue(rx, pcap_filename, key, pcap, NULL) < 0) {
 783                 pcap_close(pcap);
 784                 return -1;
 785         }
 786
 787         return 0;
 788 }
 789
 790 /*
 791  * Opens a pcap file for writing and stores a reference to it
 792  * for use it later on.
 793  */
 794 static int
 795 open_tx_pcap(const char *key, const char *value, void *extra_args)
 796 {
 797         const char *pcap_filename = value;
 798         struct pmd_devargs *dumpers = extra_args;
 799         pcap_dumper_t *dumper;
 800
 801         if (open_single_tx_pcap(pcap_filename, &dumper) < 0)
 802                 return -1;
 803
 804         if (add_queue(dumpers, pcap_filename, key, NULL, dumper) < 0) {
 805                 pcap_dump_close(dumper);
 806                 return -1;
 807         }
 808
 809         return 0;
 810 }
 811
 812 /*
 813  * Opens an interface for reading and writing
 814  */
 815 static inline int
 816 open_rx_tx_iface(const char *key, const char *value, void *extra_args)
 817 {
 818         const char *iface = value;
 819         struct pmd_devargs *tx = extra_args;
 820         pcap_t *pcap = NULL;
 821
 822         if (open_single_iface(iface, &pcap) < 0)
 823                 return -1;
 824
 825         tx->queue[0].pcap = pcap;
 826         tx->queue[0].name = iface;
 827         tx->queue[0].type = key;
 828
 829         return 0;
 830 }
 831
 832 static inline int
 833 set_iface_direction(const char *iface, pcap_t *pcap,
 834                 pcap_direction_t direction)
 835 {
 836         const char *direction_str = (direction == PCAP_D_IN) ? "IN" : "OUT";
 837         if (pcap_setdirection(pcap, direction) < 0) {
 838                 PMD_LOG(ERR, "Setting %s pcap direction %s failed - %s\n",
 839                                 iface, direction_str, pcap_geterr(pcap));
 840                 return -1;
 841         }
 842         PMD_LOG(INFO, "Setting %s pcap direction %s\n",
 843                         iface, direction_str);
 844         return 0;
 845 }
 846
 847 static inline int
 848 open_iface(const char *key, const char *value, void *extra_args)
 849 {
 850         const char *iface = value;
 851         struct pmd_devargs *pmd = extra_args;
 852         pcap_t *pcap = NULL;
 853
 854         if (open_single_iface(iface, &pcap) < 0)
 855                 return -1;
 856         if (add_queue(pmd, iface, key, pcap, NULL) < 0) {
 857                 pcap_close(pcap);
 858                 return -1;
 859         }
 860
 861         return 0;
 862 }
 863
 864 /*
 865  * Opens a NIC for reading packets from it
 866  */
 867 static inline int
 868 open_rx_iface(const char *key, const char *value, void *extra_args)
 869 {
 870         int ret = open_iface(key, value, extra_args);
 871         if (ret < 0)
 872                 return ret;
 873         if (strcmp(key, ETH_PCAP_RX_IFACE_IN_ARG) == 0) {
 874                 struct pmd_devargs *pmd = extra_args;
 875                 unsigned int qid = pmd->num_of_queue - 1;
 876
 877                 set_iface_direction(pmd->queue[qid].name,
 878                                 pmd->queue[qid].pcap,
 879                                 PCAP_D_IN);
 880         }
 881
 882         return 0;
 883 }
 884
 885 static inline int
 886 rx_iface_args_process(const char *key, const char *value, void *extra_args)
 887 {
 888         if (strcmp(key, ETH_PCAP_RX_IFACE_ARG) == 0 ||
 889                         strcmp(key, ETH_PCAP_RX_IFACE_IN_ARG) == 0)
 890                 return open_rx_iface(key, value, extra_args);
 891
 892         return 0;
 893 }
 894
 895 /*
 896  * Opens a NIC for writing packets to it
 897  */
 898 static int
 899 open_tx_iface(const char *key, const char *value, void *extra_args)
 900 {
 901         return open_iface(key, value, extra_args);
 902 }
 903
 904 static int
 905 select_phy_mac(const char *key __rte_unused, const char *value,
 906                 void *extra_args)
 907 {
 908         if (extra_args) {
 909                 const int phy_mac = atoi(value);
 910                 int *enable_phy_mac = extra_args;
 911
 912                 if (phy_mac)
 913                         *enable_phy_mac = 1;
 914         }
 915         return 0;
 916 }
 917
 918 static struct rte_vdev_driver pmd_pcap_drv;
 919
 920 static int
 921 pmd_init_internals(struct rte_vdev_device *vdev,
 922                 const unsigned int nb_rx_queues,
 923                 const unsigned int nb_tx_queues,
 924                 struct pmd_internals **internals,
 925                 struct rte_eth_dev **eth_dev)
 926 {
 927         struct rte_eth_dev_data *data;
 928         struct pmd_process_private *pp;
 929         unsigned int numa_node = vdev->device.numa_node;
 930
 931         PMD_LOG(INFO, "Creating pcap-backed ethdev on numa socket %d",
 932                 numa_node);
 933
 934         pp = (struct pmd_process_private *)
 935                 rte_zmalloc(NULL, sizeof(struct pmd_process_private),
 936                                 RTE_CACHE_LINE_SIZE);
 937
 938         if (pp == NULL) {
 939                 PMD_LOG(ERR,
 940                         "Failed to allocate memory for process private");
 941                 return -1;
 942         }
 943
 944         /* reserve an ethdev entry */
 945         *eth_dev = rte_eth_vdev_allocate(vdev, sizeof(**internals));
 946         if (!(*eth_dev)) {
 947                 rte_free(pp);
 948                 return -1;
 949         }
 950         (*eth_dev)->process_private = pp;
 951         /* now put it all together
 952          * - store queue data in internals,
 953          * - store numa_node info in eth_dev
 954          * - point eth_dev_data to internals
 955          * - and point eth_dev structure to new eth_dev_data structure
 956          */
 957         *internals = (*eth_dev)->data->dev_private;
 958         /*
 959          * Interface MAC = 02:70:63:61:70:<iface_idx>
 960          * derived from: 'locally administered':'p':'c':'a':'p':'iface_idx'
 961          * where the middle 4 characters are converted to hex.
 962          */
 963         (*internals)->eth_addr = (struct rte_ether_addr) {
 964                 .addr_bytes = { 0x02, 0x70, 0x63, 0x61, 0x70, iface_idx++ }
 965         };
 966         (*internals)->phy_mac = 0;
 967         data = (*eth_dev)->data;
 968         data->nb_rx_queues = (uint16_t)nb_rx_queues;
 969         data->nb_tx_queues = (uint16_t)nb_tx_queues;
 970         data->dev_link = pmd_link;
 971         data->mac_addrs = &(*internals)->eth_addr;
 972
 973         /*
 974          * NOTE: we'll replace the data element, of originally allocated
 975          * eth_dev so the rings are local per-process
 976          */
 977         (*eth_dev)->dev_ops = &ops;
 978
 979         strlcpy((*internals)->devargs, rte_vdev_device_args(vdev),
 980                         ETH_PCAP_ARG_MAXLEN);
 981
 982         return 0;
 983 }
 984
 985 static int
 986 eth_pcap_update_mac(const char *if_name, struct rte_eth_dev *eth_dev,
 987                 const unsigned int numa_node)
 988 {
 989 #if defined(RTE_EXEC_ENV_LINUX)
 990         void *mac_addrs;
 991         struct ifreq ifr;
 992         int if_fd = socket(AF_INET, SOCK_DGRAM, 0);
 993
 994         if (if_fd == -1)
 995                 return -1;
 996
 997         rte_strscpy(ifr.ifr_name, if_name, sizeof(ifr.ifr_name));
 998         if (ioctl(if_fd, SIOCGIFHWADDR, &ifr)) {
 999                 close(if_fd);
1000                 return -1;
1001         }
1002
1003         mac_addrs = rte_zmalloc_socket(NULL, RTE_ETHER_ADDR_LEN, 0, numa_node);
1004         if (!mac_addrs) {
1005                 close(if_fd);
1006                 return -1;
1007         }
1008
1009         PMD_LOG(INFO, "Setting phy MAC for %s", if_name);
1010         eth_dev->data->mac_addrs = mac_addrs;
1011         rte_memcpy(eth_dev->data->mac_addrs[0].addr_bytes,
1012                         ifr.ifr_hwaddr.sa_data, RTE_ETHER_ADDR_LEN);
1013
1014         close(if_fd);
1015
1016         return 0;
1017
1018 #elif defined(RTE_EXEC_ENV_FREEBSD)
1019         void *mac_addrs;
1020         struct if_msghdr *ifm;
1021         struct sockaddr_dl *sdl;
1022         int mib[6];
1023         size_t len = 0;
1024         char *buf;
1025
1026         mib[0] = CTL_NET;
1027         mib[1] = AF_ROUTE;
1028         mib[2] = 0;
1029         mib[3] = AF_LINK;
1030         mib[4] = NET_RT_IFLIST;
1031         mib[5] = if_nametoindex(if_name);
1032
1033         if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0)
1034                 return -1;
1035
1036         if (len == 0)
1037                 return -1;
1038
1039         buf = rte_malloc(NULL, len, 0);
1040         if (!buf)
1041                 return -1;
1042
1043         if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
1044                 rte_free(buf);
1045                 return -1;
1046         }
1047         ifm = (struct if_msghdr *)buf;
1048         sdl = (struct sockaddr_dl *)(ifm + 1);
1049
1050         mac_addrs = rte_zmalloc_socket(NULL, RTE_ETHER_ADDR_LEN, 0, numa_node);
1051         if (!mac_addrs) {
1052                 rte_free(buf);
1053                 return -1;
1054         }
1055
1056         PMD_LOG(INFO, "Setting phy MAC for %s", if_name);
1057         eth_dev->data->mac_addrs = mac_addrs;
1058         rte_memcpy(eth_dev->data->mac_addrs[0].addr_bytes,
1059                         LLADDR(sdl), RTE_ETHER_ADDR_LEN);
1060
1061         rte_free(buf);
1062
1063         return 0;
1064 #else
1065         return -1;
1066 #endif
1067 }
1068
1069 static int
1070 eth_from_pcaps_common(struct rte_vdev_device *vdev,
1071                 struct pmd_devargs_all *devargs_all,
1072                 struct pmd_internals **internals, struct rte_eth_dev **eth_dev)
1073 {
1074         struct pmd_process_private *pp;
1075         struct pmd_devargs *rx_queues = &devargs_all->rx_queues;
1076         struct pmd_devargs *tx_queues = &devargs_all->tx_queues;
1077         const unsigned int nb_rx_queues = rx_queues->num_of_queue;
1078         const unsigned int nb_tx_queues = tx_queues->num_of_queue;
1079         unsigned int i;
1080
1081         /* do some parameter checking */
1082         if (rx_queues == NULL && nb_rx_queues > 0)
1083                 return -1;
1084         if (tx_queues == NULL && nb_tx_queues > 0)
1085                 return -1;
1086
1087         if (pmd_init_internals(vdev, nb_rx_queues, nb_tx_queues, internals,
1088                         eth_dev) < 0)
1089                 return -1;
1090
1091         pp = (*eth_dev)->process_private;
1092         for (i = 0; i < nb_rx_queues; i++) {
1093                 struct pcap_rx_queue *rx = &(*internals)->rx_queue[i];
1094                 struct devargs_queue *queue = &rx_queues->queue[i];
1095
1096                 pp->rx_pcap[i] = queue->pcap;
1097                 strlcpy(rx->name, queue->name, sizeof(rx->name));
1098                 strlcpy(rx->type, queue->type, sizeof(rx->type));
1099         }
1100
1101         for (i = 0; i < nb_tx_queues; i++) {
1102                 struct pcap_tx_queue *tx = &(*internals)->tx_queue[i];
1103                 struct devargs_queue *queue = &tx_queues->queue[i];
1104
1105                 pp->tx_dumper[i] = queue->dumper;
1106                 pp->tx_pcap[i] = queue->pcap;
1107                 strlcpy(tx->name, queue->name, sizeof(tx->name));
1108                 strlcpy(tx->type, queue->type, sizeof(tx->type));
1109         }
1110
1111         return 0;
1112 }
1113
1114 static int
1115 eth_from_pcaps(struct rte_vdev_device *vdev,
1116                 struct pmd_devargs_all *devargs_all)
1117 {
1118         struct pmd_internals *internals = NULL;
1119         struct rte_eth_dev *eth_dev = NULL;
1120         struct pmd_devargs *rx_queues = &devargs_all->rx_queues;
1121         int single_iface = devargs_all->single_iface;
1122         int ret;
1123
1124         ret = eth_from_pcaps_common(vdev, devargs_all, &internals, &eth_dev);
1125
1126         if (ret < 0)
1127                 return ret;
1128
1129         /* store weather we are using a single interface for rx/tx or not */
1130         internals->single_iface = single_iface;
1131
1132         if (single_iface) {
1133                 internals->if_index = if_nametoindex(rx_queues->queue[0].name);
1134
1135                 /* phy_mac arg is applied only only if "iface" devarg is provided */
1136                 if (rx_queues->phy_mac) {
1137                         int ret = eth_pcap_update_mac(rx_queues->queue[0].name,
1138                                         eth_dev, vdev->device.numa_node);
1139                         if (ret == 0)
1140                                 internals->phy_mac = 1;
1141                 }
1142         }
1143
1144         eth_dev->rx_pkt_burst = eth_pcap_rx;
1145
1146         /* Assign tx ops. */
1147         if (devargs_all->is_tx_pcap)
1148                 eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
1149         else
1150                 eth_dev->tx_pkt_burst = eth_pcap_tx;
1151
1152         rte_eth_dev_probing_finish(eth_dev);
1153         return 0;
1154 }
1155
1156 static int
1157 pmd_pcap_probe(struct rte_vdev_device *dev)
1158 {
1159         const char *name;
1160         unsigned int is_rx_pcap = 0;
1161         struct rte_kvargs *kvlist;
1162         struct pmd_devargs pcaps = {0};
1163         struct pmd_devargs dumpers = {0};
1164         struct rte_eth_dev *eth_dev =  NULL;
1165         struct pmd_internals *internal;
1166         int ret;
1167
1168         struct pmd_devargs_all devargs_all = {
1169                 .single_iface = 0,
1170                 .is_tx_pcap = 0,
1171                 .is_tx_iface = 0,
1172         };
1173
1174         name = rte_vdev_device_name(dev);
1175         PMD_LOG(INFO, "Initializing pmd_pcap for %s", name);
1176
1177         gettimeofday(&start_time, NULL);
1178         start_cycles = rte_get_timer_cycles();
1179         hz = rte_get_timer_hz();
1180
1181         if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1182                 eth_dev = rte_eth_dev_attach_secondary(name);
1183                 if (!eth_dev) {
1184                         PMD_LOG(ERR, "Failed to probe %s", name);
1185                         return -1;
1186                 }
1187
1188                 internal = eth_dev->data->dev_private;
1189
1190                 kvlist = rte_kvargs_parse(internal->devargs, valid_arguments);
1191                 if (kvlist == NULL)
1192                         return -1;
1193         } else {
1194                 kvlist = rte_kvargs_parse(rte_vdev_device_args(dev),
1195                                 valid_arguments);
1196                 if (kvlist == NULL)
1197                         return -1;
1198         }
1199
1200         /*
1201          * If iface argument is passed we open the NICs and use them for
1202          * reading / writing
1203          */
1204         if (rte_kvargs_count(kvlist, ETH_PCAP_IFACE_ARG) == 1) {
1205
1206                 ret = rte_kvargs_process(kvlist, ETH_PCAP_IFACE_ARG,
1207                                 &open_rx_tx_iface, &pcaps);
1208                 if (ret < 0)
1209                         goto free_kvlist;
1210
1211                 dumpers.queue[0] = pcaps.queue[0];
1212
1213                 ret = rte_kvargs_process(kvlist, ETH_PCAP_PHY_MAC_ARG,
1214                                 &select_phy_mac, &pcaps.phy_mac);
1215                 if (ret < 0)
1216                         goto free_kvlist;
1217
1218                 dumpers.phy_mac = pcaps.phy_mac;
1219
1220                 devargs_all.single_iface = 1;
1221                 pcaps.num_of_queue = 1;
1222                 dumpers.num_of_queue = 1;
1223
1224                 goto create_eth;
1225         }
1226
1227         /*
1228          * We check whether we want to open a RX stream from a real NIC or a
1229          * pcap file
1230          */
1231         is_rx_pcap = rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG) ? 1 : 0;
1232         pcaps.num_of_queue = 0;
1233
1234         if (is_rx_pcap) {
1235                 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_PCAP_ARG,
1236                                 &open_rx_pcap, &pcaps);
1237         } else {
1238                 ret = rte_kvargs_process(kvlist, NULL,
1239                                 &rx_iface_args_process, &pcaps);
1240         }
1241
1242         if (ret < 0)
1243                 goto free_kvlist;
1244
1245         /*
1246          * We check whether we want to open a TX stream to a real NIC or a
1247          * pcap file
1248          */
1249         devargs_all.is_tx_pcap =
1250                 rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG) ? 1 : 0;
1251         dumpers.num_of_queue = 0;
1252
1253         if (devargs_all.is_tx_pcap)
1254                 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_PCAP_ARG,
1255                                 &open_tx_pcap, &dumpers);
1256         else
1257                 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_IFACE_ARG,
1258                                 &open_tx_iface, &dumpers);
1259
1260         if (ret < 0)
1261                 goto free_kvlist;
1262
1263 create_eth:
1264         if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1265                 struct pmd_process_private *pp;
1266                 unsigned int i;
1267
1268                 internal = eth_dev->data->dev_private;
1269                         pp = (struct pmd_process_private *)
1270                                 rte_zmalloc(NULL,
1271                                         sizeof(struct pmd_process_private),
1272                                         RTE_CACHE_LINE_SIZE);
1273
1274                 if (pp == NULL) {
1275                         PMD_LOG(ERR,
1276                                 "Failed to allocate memory for process private");
1277                         ret = -1;
1278                         goto free_kvlist;
1279                 }
1280
1281                 eth_dev->dev_ops = &ops;
1282                 eth_dev->device = &dev->device;
1283
1284                 /* setup process private */
1285                 for (i = 0; i < pcaps.num_of_queue; i++)
1286                         pp->rx_pcap[i] = pcaps.queue[i].pcap;
1287
1288                 for (i = 0; i < dumpers.num_of_queue; i++) {
1289                         pp->tx_dumper[i] = dumpers.queue[i].dumper;
1290                         pp->tx_pcap[i] = dumpers.queue[i].pcap;
1291                 }
1292
1293                 eth_dev->process_private = pp;
1294                 eth_dev->rx_pkt_burst = eth_pcap_rx;
1295                 if (devargs_all.is_tx_pcap)
1296                         eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
1297                 else
1298                         eth_dev->tx_pkt_burst = eth_pcap_tx;
1299
1300                 rte_eth_dev_probing_finish(eth_dev);
1301                 goto free_kvlist;
1302         }
1303
1304         devargs_all.rx_queues = pcaps;
1305         devargs_all.tx_queues = dumpers;
1306
1307         ret = eth_from_pcaps(dev, &devargs_all);
1308
1309 free_kvlist:
1310         rte_kvargs_free(kvlist);
1311
1312         return ret;
1313 }
1314
1315 static int
1316 pmd_pcap_remove(struct rte_vdev_device *dev)
1317 {
1318         struct pmd_internals *internals = NULL;
1319         struct rte_eth_dev *eth_dev = NULL;
1320
1321         PMD_LOG(INFO, "Closing pcap ethdev on numa socket %d",
1322                         rte_socket_id());
1323
1324         if (!dev)
1325                 return -1;
1326
1327         /* reserve an ethdev entry */
1328         eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
1329         if (eth_dev == NULL)
1330                 return -1;
1331
1332         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1333                 internals = eth_dev->data->dev_private;
1334                 if (internals != NULL && internals->phy_mac == 0)
1335                         /* not dynamically allocated, must not be freed */
1336                         eth_dev->data->mac_addrs = NULL;
1337         }
1338
1339         rte_free(eth_dev->process_private);
1340         rte_eth_dev_release_port(eth_dev);
1341
1342         return 0;
1343 }
1344
1345 static struct rte_vdev_driver pmd_pcap_drv = {
1346         .probe = pmd_pcap_probe,
1347         .remove = pmd_pcap_remove,
1348 };
1349
1350 RTE_PMD_REGISTER_VDEV(net_pcap, pmd_pcap_drv);
1351 RTE_PMD_REGISTER_ALIAS(net_pcap, eth_pcap);
1352 RTE_PMD_REGISTER_PARAM_STRING(net_pcap,
1353         ETH_PCAP_RX_PCAP_ARG "=<string> "
1354         ETH_PCAP_TX_PCAP_ARG "=<string> "
1355         ETH_PCAP_RX_IFACE_ARG "=<ifc> "
1356         ETH_PCAP_RX_IFACE_IN_ARG "=<ifc> "
1357         ETH_PCAP_TX_IFACE_ARG "=<ifc> "
1358         ETH_PCAP_IFACE_ARG "=<ifc> "
1359         ETH_PCAP_PHY_MAC_ARG "=<int>");
1360
1361 RTE_INIT(eth_pcap_init_log)
1362 {
1363         eth_pcap_logtype = rte_log_register("pmd.net.pcap");
1364         if (eth_pcap_logtype >= 0)
1365                 rte_log_set_level(eth_pcap_logtype, RTE_LOG_NOTICE);
1366 }