4 * Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
5 * Copyright(c) 2014 6WIND S.A.
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41 #include <rte_cycles.h>
42 #include <rte_ethdev.h>
43 #include <rte_kvargs.h>
44 #include <rte_malloc.h>
48 #define RTE_ETH_PCAP_SNAPSHOT_LEN 65535
49 #define RTE_ETH_PCAP_SNAPLEN ETHER_MAX_JUMBO_FRAME_LEN
50 #define RTE_ETH_PCAP_PROMISC 1
51 #define RTE_ETH_PCAP_TIMEOUT -1
53 #define ETH_PCAP_RX_PCAP_ARG "rx_pcap"
54 #define ETH_PCAP_TX_PCAP_ARG "tx_pcap"
55 #define ETH_PCAP_RX_IFACE_ARG "rx_iface"
56 #define ETH_PCAP_TX_IFACE_ARG "tx_iface"
57 #define ETH_PCAP_IFACE_ARG "iface"
59 #define ETH_PCAP_ARG_MAXLEN 64
61 #define RTE_PMD_PCAP_MAX_QUEUES 16
63 static char errbuf[PCAP_ERRBUF_SIZE];
64 static unsigned char tx_pcap_data[RTE_ETH_PCAP_SNAPLEN];
65 static struct timeval start_time;
66 static uint64_t start_cycles;
70 volatile unsigned long pkts;
71 volatile unsigned long bytes;
72 volatile unsigned long err_pkts;
75 struct pcap_rx_queue {
78 struct rte_mempool *mb_pool;
79 struct queue_stat rx_stat;
81 char type[ETH_PCAP_ARG_MAXLEN];
84 struct pcap_tx_queue {
85 pcap_dumper_t *dumper;
87 struct queue_stat tx_stat;
89 char type[ETH_PCAP_ARG_MAXLEN];
92 struct pmd_internals {
93 struct pcap_rx_queue rx_queue[RTE_PMD_PCAP_MAX_QUEUES];
94 struct pcap_tx_queue tx_queue[RTE_PMD_PCAP_MAX_QUEUES];
100 unsigned int num_of_queue;
101 struct devargs_queue {
102 pcap_dumper_t *dumper;
106 } queue[RTE_PMD_PCAP_MAX_QUEUES];
109 static const char *valid_arguments[] = {
110 ETH_PCAP_RX_PCAP_ARG,
111 ETH_PCAP_TX_PCAP_ARG,
112 ETH_PCAP_RX_IFACE_ARG,
113 ETH_PCAP_TX_IFACE_ARG,
118 static struct ether_addr eth_addr = {
119 .addr_bytes = { 0, 0, 0, 0x1, 0x2, 0x3 }
122 static const char *drivername = "Pcap PMD";
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_SPEED_FIXED,
131 eth_pcap_rx_jumbo(struct rte_mempool *mb_pool, struct rte_mbuf *mbuf,
132 const u_char *data, uint16_t data_len)
134 /* Copy the first segment. */
135 uint16_t len = rte_pktmbuf_tailroom(mbuf);
136 struct rte_mbuf *m = mbuf;
138 rte_memcpy(rte_pktmbuf_append(mbuf, len), data, len);
142 while (data_len > 0) {
143 /* Allocate next mbuf and point to that. */
144 m->next = rte_pktmbuf_alloc(mb_pool);
146 if (unlikely(!m->next))
151 /* Headroom is not needed in chained mbufs. */
152 rte_pktmbuf_prepend(m, rte_pktmbuf_headroom(m));
156 /* Copy next segment. */
157 len = RTE_MIN(rte_pktmbuf_tailroom(m), data_len);
158 rte_memcpy(rte_pktmbuf_append(m, len), data, len);
165 return mbuf->nb_segs;
168 /* Copy data from mbuf chain to a buffer suitable for writing to a PCAP file. */
170 eth_pcap_gather_data(unsigned char *data, struct rte_mbuf *mbuf)
172 uint16_t data_len = 0;
175 rte_memcpy(data + data_len, rte_pktmbuf_mtod(mbuf, void *),
178 data_len += mbuf->data_len;
184 eth_pcap_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
187 struct pcap_pkthdr header;
188 const u_char *packet;
189 struct rte_mbuf *mbuf;
190 struct pcap_rx_queue *pcap_q = queue;
193 uint32_t rx_bytes = 0;
195 if (unlikely(pcap_q->pcap == NULL || nb_pkts == 0))
198 /* Reads the given number of packets from the pcap file one by one
199 * and copies the packet data into a newly allocated mbuf to return.
201 for (i = 0; i < nb_pkts; i++) {
202 /* Get the next PCAP packet */
203 packet = pcap_next(pcap_q->pcap, &header);
204 if (unlikely(packet == NULL))
207 mbuf = rte_pktmbuf_alloc(pcap_q->mb_pool);
208 if (unlikely(mbuf == NULL))
211 /* Now get the space available for data in the mbuf */
212 buf_size = rte_pktmbuf_data_room_size(pcap_q->mb_pool) -
213 RTE_PKTMBUF_HEADROOM;
215 if (header.caplen <= buf_size) {
216 /* pcap packet will fit in the mbuf, can copy it */
217 rte_memcpy(rte_pktmbuf_mtod(mbuf, void *), packet,
219 mbuf->data_len = (uint16_t)header.caplen;
221 /* Try read jumbo frame into multi mbufs. */
222 if (unlikely(eth_pcap_rx_jumbo(pcap_q->mb_pool,
225 header.caplen) == -1))
229 mbuf->pkt_len = (uint16_t)header.caplen;
230 mbuf->port = pcap_q->in_port;
233 rx_bytes += header.caplen;
235 pcap_q->rx_stat.pkts += num_rx;
236 pcap_q->rx_stat.bytes += rx_bytes;
242 calculate_timestamp(struct timeval *ts) {
244 struct timeval cur_time;
246 cycles = rte_get_timer_cycles() - start_cycles;
247 cur_time.tv_sec = cycles / hz;
248 cur_time.tv_usec = (cycles % hz) * 10e6 / hz;
249 timeradd(&start_time, &cur_time, ts);
253 * Callback to handle writing packets to a pcap file.
256 eth_pcap_tx_dumper(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
259 struct rte_mbuf *mbuf;
260 struct pcap_tx_queue *dumper_q = queue;
262 uint32_t tx_bytes = 0;
263 struct pcap_pkthdr header;
265 if (dumper_q->dumper == NULL || nb_pkts == 0)
268 /* writes the nb_pkts packets to the previously opened pcap file
270 for (i = 0; i < nb_pkts; i++) {
272 calculate_timestamp(&header.ts);
273 header.len = mbuf->pkt_len;
274 header.caplen = header.len;
276 if (likely(mbuf->nb_segs == 1)) {
277 pcap_dump((u_char *)dumper_q->dumper, &header,
278 rte_pktmbuf_mtod(mbuf, void*));
280 if (mbuf->pkt_len <= ETHER_MAX_JUMBO_FRAME_LEN) {
281 eth_pcap_gather_data(tx_pcap_data, mbuf);
282 pcap_dump((u_char *)dumper_q->dumper, &header,
286 "Dropping PCAP packet. Size (%d) > max jumbo size (%d).\n",
288 ETHER_MAX_JUMBO_FRAME_LEN);
290 rte_pktmbuf_free(mbuf);
295 rte_pktmbuf_free(mbuf);
297 tx_bytes += mbuf->pkt_len;
301 * Since there's no place to hook a callback when the forwarding
302 * process stops and to make sure the pcap file is actually written,
303 * we flush the pcap dumper within each burst.
305 pcap_dump_flush(dumper_q->dumper);
306 dumper_q->tx_stat.pkts += num_tx;
307 dumper_q->tx_stat.bytes += tx_bytes;
308 dumper_q->tx_stat.err_pkts += nb_pkts - num_tx;
314 * Callback to handle sending packets through a real NIC.
317 eth_pcap_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
321 struct rte_mbuf *mbuf;
322 struct pcap_tx_queue *tx_queue = queue;
324 uint32_t tx_bytes = 0;
326 if (unlikely(nb_pkts == 0 || tx_queue->pcap == NULL))
329 for (i = 0; i < nb_pkts; i++) {
332 if (likely(mbuf->nb_segs == 1)) {
333 ret = pcap_sendpacket(tx_queue->pcap,
334 rte_pktmbuf_mtod(mbuf, u_char *),
337 if (mbuf->pkt_len <= ETHER_MAX_JUMBO_FRAME_LEN) {
338 eth_pcap_gather_data(tx_pcap_data, mbuf);
339 ret = pcap_sendpacket(tx_queue->pcap,
340 tx_pcap_data, mbuf->pkt_len);
343 "Dropping PCAP packet. Size (%d) > max jumbo size (%d).\n",
345 ETHER_MAX_JUMBO_FRAME_LEN);
347 rte_pktmbuf_free(mbuf);
352 if (unlikely(ret != 0))
355 tx_bytes += mbuf->pkt_len;
356 rte_pktmbuf_free(mbuf);
359 tx_queue->tx_stat.pkts += num_tx;
360 tx_queue->tx_stat.bytes += tx_bytes;
361 tx_queue->tx_stat.err_pkts += nb_pkts - num_tx;
367 * pcap_open_live wrapper function
370 open_iface_live(const char *iface, pcap_t **pcap) {
371 *pcap = pcap_open_live(iface, RTE_ETH_PCAP_SNAPLEN,
372 RTE_ETH_PCAP_PROMISC, RTE_ETH_PCAP_TIMEOUT, errbuf);
375 RTE_LOG(ERR, PMD, "Couldn't open %s: %s\n", iface, errbuf);
383 open_single_iface(const char *iface, pcap_t **pcap)
385 if (open_iface_live(iface, pcap) < 0) {
386 RTE_LOG(ERR, PMD, "Couldn't open interface %s\n", iface);
394 open_single_tx_pcap(const char *pcap_filename, pcap_dumper_t **dumper)
399 * We need to create a dummy empty pcap_t to use it
400 * with pcap_dump_open(). We create big enough an Ethernet
403 tx_pcap = pcap_open_dead(DLT_EN10MB, RTE_ETH_PCAP_SNAPSHOT_LEN);
404 if (tx_pcap == NULL) {
405 RTE_LOG(ERR, PMD, "Couldn't create dead pcap\n");
409 /* The dumper is created using the previous pcap_t reference */
410 *dumper = pcap_dump_open(tx_pcap, pcap_filename);
411 if (*dumper == NULL) {
412 RTE_LOG(ERR, PMD, "Couldn't open %s for writing.\n",
421 open_single_rx_pcap(const char *pcap_filename, pcap_t **pcap)
423 *pcap = pcap_open_offline(pcap_filename, errbuf);
425 RTE_LOG(ERR, PMD, "Couldn't open %s: %s\n", pcap_filename,
434 eth_dev_start(struct rte_eth_dev *dev)
437 struct pmd_internals *internals = dev->data->dev_private;
438 struct pcap_tx_queue *tx;
439 struct pcap_rx_queue *rx;
441 /* Special iface case. Single pcap is open and shared between tx/rx. */
442 if (internals->single_iface) {
443 tx = &internals->tx_queue[0];
444 rx = &internals->rx_queue[0];
446 if (!tx->pcap && strcmp(tx->type, ETH_PCAP_IFACE_ARG) == 0) {
447 if (open_single_iface(tx->name, &tx->pcap) < 0)
454 /* If not open already, open tx pcaps/dumpers */
455 for (i = 0; i < dev->data->nb_tx_queues; i++) {
456 tx = &internals->tx_queue[i];
459 strcmp(tx->type, ETH_PCAP_TX_PCAP_ARG) == 0) {
460 if (open_single_tx_pcap(tx->name, &tx->dumper) < 0)
462 } else if (!tx->pcap &&
463 strcmp(tx->type, ETH_PCAP_TX_IFACE_ARG) == 0) {
464 if (open_single_iface(tx->name, &tx->pcap) < 0)
469 /* If not open already, open rx pcaps */
470 for (i = 0; i < dev->data->nb_rx_queues; i++) {
471 rx = &internals->rx_queue[i];
473 if (rx->pcap != NULL)
476 if (strcmp(rx->type, ETH_PCAP_RX_PCAP_ARG) == 0) {
477 if (open_single_rx_pcap(rx->name, &rx->pcap) < 0)
479 } else if (strcmp(rx->type, ETH_PCAP_RX_IFACE_ARG) == 0) {
480 if (open_single_iface(rx->name, &rx->pcap) < 0)
486 dev->data->dev_link.link_status = ETH_LINK_UP;
492 * This function gets called when the current port gets stopped.
493 * Is the only place for us to close all the tx streams dumpers.
494 * If not called the dumpers will be flushed within each tx burst.
497 eth_dev_stop(struct rte_eth_dev *dev)
500 struct pmd_internals *internals = dev->data->dev_private;
501 struct pcap_tx_queue *tx;
502 struct pcap_rx_queue *rx;
504 /* Special iface case. Single pcap is open and shared between tx/rx. */
505 if (internals->single_iface) {
506 tx = &internals->tx_queue[0];
507 rx = &internals->rx_queue[0];
508 pcap_close(tx->pcap);
514 for (i = 0; i < dev->data->nb_tx_queues; i++) {
515 tx = &internals->tx_queue[i];
517 if (tx->dumper != NULL) {
518 pcap_dump_close(tx->dumper);
522 if (tx->pcap != NULL) {
523 pcap_close(tx->pcap);
528 for (i = 0; i < dev->data->nb_rx_queues; i++) {
529 rx = &internals->rx_queue[i];
531 if (rx->pcap != NULL) {
532 pcap_close(rx->pcap);
538 dev->data->dev_link.link_status = ETH_LINK_DOWN;
542 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
548 eth_dev_info(struct rte_eth_dev *dev,
549 struct rte_eth_dev_info *dev_info)
551 struct pmd_internals *internals = dev->data->dev_private;
553 dev_info->driver_name = drivername;
554 dev_info->if_index = internals->if_index;
555 dev_info->max_mac_addrs = 1;
556 dev_info->max_rx_pktlen = (uint32_t) -1;
557 dev_info->max_rx_queues = dev->data->nb_rx_queues;
558 dev_info->max_tx_queues = dev->data->nb_tx_queues;
559 dev_info->min_rx_bufsize = 0;
560 dev_info->pci_dev = NULL;
564 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
567 unsigned long rx_packets_total = 0, rx_bytes_total = 0;
568 unsigned long tx_packets_total = 0, tx_bytes_total = 0;
569 unsigned long tx_packets_err_total = 0;
570 const struct pmd_internals *internal = dev->data->dev_private;
572 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
573 i < dev->data->nb_rx_queues; i++) {
574 stats->q_ipackets[i] = internal->rx_queue[i].rx_stat.pkts;
575 stats->q_ibytes[i] = internal->rx_queue[i].rx_stat.bytes;
576 rx_packets_total += stats->q_ipackets[i];
577 rx_bytes_total += stats->q_ibytes[i];
580 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
581 i < dev->data->nb_tx_queues; i++) {
582 stats->q_opackets[i] = internal->tx_queue[i].tx_stat.pkts;
583 stats->q_obytes[i] = internal->tx_queue[i].tx_stat.bytes;
584 stats->q_errors[i] = internal->tx_queue[i].tx_stat.err_pkts;
585 tx_packets_total += stats->q_opackets[i];
586 tx_bytes_total += stats->q_obytes[i];
587 tx_packets_err_total += stats->q_errors[i];
590 stats->ipackets = rx_packets_total;
591 stats->ibytes = rx_bytes_total;
592 stats->opackets = tx_packets_total;
593 stats->obytes = tx_bytes_total;
594 stats->oerrors = tx_packets_err_total;
598 eth_stats_reset(struct rte_eth_dev *dev)
601 struct pmd_internals *internal = dev->data->dev_private;
603 for (i = 0; i < dev->data->nb_rx_queues; i++) {
604 internal->rx_queue[i].rx_stat.pkts = 0;
605 internal->rx_queue[i].rx_stat.bytes = 0;
608 for (i = 0; i < dev->data->nb_tx_queues; i++) {
609 internal->tx_queue[i].tx_stat.pkts = 0;
610 internal->tx_queue[i].tx_stat.bytes = 0;
611 internal->tx_queue[i].tx_stat.err_pkts = 0;
616 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
621 eth_queue_release(void *q __rte_unused)
626 eth_link_update(struct rte_eth_dev *dev __rte_unused,
627 int wait_to_complete __rte_unused)
633 eth_rx_queue_setup(struct rte_eth_dev *dev,
634 uint16_t rx_queue_id,
635 uint16_t nb_rx_desc __rte_unused,
636 unsigned int socket_id __rte_unused,
637 const struct rte_eth_rxconf *rx_conf __rte_unused,
638 struct rte_mempool *mb_pool)
640 struct pmd_internals *internals = dev->data->dev_private;
641 struct pcap_rx_queue *pcap_q = &internals->rx_queue[rx_queue_id];
643 pcap_q->mb_pool = mb_pool;
644 dev->data->rx_queues[rx_queue_id] = pcap_q;
645 pcap_q->in_port = dev->data->port_id;
651 eth_tx_queue_setup(struct rte_eth_dev *dev,
652 uint16_t tx_queue_id,
653 uint16_t nb_tx_desc __rte_unused,
654 unsigned int socket_id __rte_unused,
655 const struct rte_eth_txconf *tx_conf __rte_unused)
657 struct pmd_internals *internals = dev->data->dev_private;
659 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
664 static const struct eth_dev_ops ops = {
665 .dev_start = eth_dev_start,
666 .dev_stop = eth_dev_stop,
667 .dev_close = eth_dev_close,
668 .dev_configure = eth_dev_configure,
669 .dev_infos_get = eth_dev_info,
670 .rx_queue_setup = eth_rx_queue_setup,
671 .tx_queue_setup = eth_tx_queue_setup,
672 .rx_queue_release = eth_queue_release,
673 .tx_queue_release = eth_queue_release,
674 .link_update = eth_link_update,
675 .stats_get = eth_stats_get,
676 .stats_reset = eth_stats_reset,
680 * Function handler that opens the pcap file for reading a stores a
681 * reference of it for use it later on.
684 open_rx_pcap(const char *key, const char *value, void *extra_args)
687 const char *pcap_filename = value;
688 struct pmd_devargs *rx = extra_args;
691 for (i = 0; i < rx->num_of_queue; i++) {
692 if (open_single_rx_pcap(pcap_filename, &pcap) < 0)
695 rx->queue[i].pcap = pcap;
696 rx->queue[i].name = pcap_filename;
697 rx->queue[i].type = key;
704 * Opens a pcap file for writing and stores a reference to it
705 * for use it later on.
708 open_tx_pcap(const char *key, const char *value, void *extra_args)
711 const char *pcap_filename = value;
712 struct pmd_devargs *dumpers = extra_args;
713 pcap_dumper_t *dumper;
715 for (i = 0; i < dumpers->num_of_queue; i++) {
716 if (open_single_tx_pcap(pcap_filename, &dumper) < 0)
719 dumpers->queue[i].dumper = dumper;
720 dumpers->queue[i].name = pcap_filename;
721 dumpers->queue[i].type = key;
728 * Opens an interface for reading and writing
731 open_rx_tx_iface(const char *key, const char *value, void *extra_args)
733 const char *iface = value;
734 struct pmd_devargs *tx = extra_args;
737 if (open_single_iface(iface, &pcap) < 0)
740 tx->queue[0].pcap = pcap;
741 tx->queue[0].name = iface;
742 tx->queue[0].type = key;
748 * Opens a NIC for reading packets from it
751 open_rx_iface(const char *key, const char *value, void *extra_args)
754 const char *iface = value;
755 struct pmd_devargs *rx = extra_args;
758 for (i = 0; i < rx->num_of_queue; i++) {
759 if (open_single_iface(iface, &pcap) < 0)
761 rx->queue[i].pcap = pcap;
762 rx->queue[i].name = iface;
763 rx->queue[i].type = key;
770 * Opens a NIC for writing packets to it
773 open_tx_iface(const char *key, const char *value, void *extra_args)
776 const char *iface = value;
777 struct pmd_devargs *tx = extra_args;
780 for (i = 0; i < tx->num_of_queue; i++) {
781 if (open_single_iface(iface, &pcap) < 0)
783 tx->queue[i].pcap = pcap;
784 tx->queue[i].name = iface;
785 tx->queue[i].type = key;
792 pmd_init_internals(const char *name, const unsigned int nb_rx_queues,
793 const unsigned int nb_tx_queues,
794 struct pmd_internals **internals,
795 struct rte_eth_dev **eth_dev)
797 struct rte_eth_dev_data *data = NULL;
798 unsigned int numa_node = rte_socket_id();
800 RTE_LOG(INFO, PMD, "Creating pcap-backed ethdev on numa socket %u\n",
803 /* now do all data allocation - for eth_dev structure
804 * and internal (private) data
806 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
810 *internals = rte_zmalloc_socket(name, sizeof(**internals), 0,
812 if (*internals == NULL)
815 /* reserve an ethdev entry */
816 *eth_dev = rte_eth_dev_allocate(name);
817 if (*eth_dev == NULL)
820 /* now put it all together
821 * - store queue data in internals,
822 * - store numa_node info in eth_dev
823 * - point eth_dev_data to internals
824 * - and point eth_dev structure to new eth_dev_data structure
826 data->dev_private = *internals;
827 data->port_id = (*eth_dev)->data->port_id;
828 snprintf(data->name, sizeof(data->name), "%s", (*eth_dev)->data->name);
829 data->nb_rx_queues = (uint16_t)nb_rx_queues;
830 data->nb_tx_queues = (uint16_t)nb_tx_queues;
831 data->dev_link = pmd_link;
832 data->mac_addrs = ð_addr;
835 * NOTE: we'll replace the data element, of originally allocated
836 * eth_dev so the rings are local per-process
838 (*eth_dev)->data = data;
839 (*eth_dev)->dev_ops = &ops;
840 (*eth_dev)->driver = NULL;
841 data->dev_flags = RTE_ETH_DEV_DETACHABLE;
842 data->kdrv = RTE_KDRV_NONE;
843 data->drv_name = drivername;
844 data->numa_node = numa_node;
850 rte_free(*internals);
856 eth_from_pcaps_common(const char *name, struct pmd_devargs *rx_queues,
857 const unsigned int nb_rx_queues, struct pmd_devargs *tx_queues,
858 const unsigned int nb_tx_queues, struct rte_kvargs *kvlist,
859 struct pmd_internals **internals, struct rte_eth_dev **eth_dev)
861 struct rte_kvargs_pair *pair = NULL;
865 /* do some parameter checking */
866 if (rx_queues == NULL && nb_rx_queues > 0)
868 if (tx_queues == NULL && nb_tx_queues > 0)
871 if (pmd_init_internals(name, nb_rx_queues, nb_tx_queues, internals,
875 for (i = 0; i < nb_rx_queues; i++) {
876 struct pcap_rx_queue *rx = &(*internals)->rx_queue[i];
877 struct devargs_queue *queue = &rx_queues->queue[i];
879 rx->pcap = queue->pcap;
880 snprintf(rx->name, sizeof(rx->name), "%s", queue->name);
881 snprintf(rx->type, sizeof(rx->type), "%s", queue->type);
884 for (i = 0; i < nb_tx_queues; i++) {
885 struct pcap_tx_queue *tx = &(*internals)->tx_queue[i];
886 struct devargs_queue *queue = &tx_queues->queue[i];
888 tx->dumper = queue->dumper;
889 tx->pcap = queue->pcap;
890 snprintf(tx->name, sizeof(tx->name), "%s", queue->name);
891 snprintf(tx->type, sizeof(tx->type), "%s", queue->type);
894 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
895 pair = &kvlist->pairs[k_idx];
896 if (strstr(pair->key, ETH_PCAP_IFACE_ARG) != NULL)
901 (*internals)->if_index = 0;
903 (*internals)->if_index = if_nametoindex(pair->value);
909 eth_from_pcaps(const char *name, struct pmd_devargs *rx_queues,
910 const unsigned int nb_rx_queues, struct pmd_devargs *tx_queues,
911 const unsigned int nb_tx_queues, struct rte_kvargs *kvlist,
912 int single_iface, unsigned int using_dumpers)
914 struct pmd_internals *internals = NULL;
915 struct rte_eth_dev *eth_dev = NULL;
918 ret = eth_from_pcaps_common(name, rx_queues, nb_rx_queues,
919 tx_queues, nb_tx_queues, kvlist, &internals, ð_dev);
924 /* store weather we are using a single interface for rx/tx or not */
925 internals->single_iface = single_iface;
927 eth_dev->rx_pkt_burst = eth_pcap_rx;
930 eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
932 eth_dev->tx_pkt_burst = eth_pcap_tx;
938 pmd_pcap_devinit(const char *name, const char *params)
940 unsigned int is_rx_pcap = 0, is_tx_pcap = 0;
941 struct rte_kvargs *kvlist;
942 struct pmd_devargs pcaps = {0};
943 struct pmd_devargs dumpers = {0};
944 int single_iface = 0;
947 RTE_LOG(INFO, PMD, "Initializing pmd_pcap for %s\n", name);
949 gettimeofday(&start_time, NULL);
950 start_cycles = rte_get_timer_cycles();
951 hz = rte_get_timer_hz();
953 kvlist = rte_kvargs_parse(params, valid_arguments);
958 * If iface argument is passed we open the NICs and use them for
961 if (rte_kvargs_count(kvlist, ETH_PCAP_IFACE_ARG) == 1) {
963 ret = rte_kvargs_process(kvlist, ETH_PCAP_IFACE_ARG,
964 &open_rx_tx_iface, &pcaps);
969 dumpers.queue[0] = pcaps.queue[0];
972 pcaps.num_of_queue = 1;
973 dumpers.num_of_queue = 1;
979 * We check whether we want to open a RX stream from a real NIC or a
982 pcaps.num_of_queue = rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG);
983 if (pcaps.num_of_queue)
986 pcaps.num_of_queue = rte_kvargs_count(kvlist,
987 ETH_PCAP_RX_IFACE_ARG);
989 if (pcaps.num_of_queue > RTE_PMD_PCAP_MAX_QUEUES)
990 pcaps.num_of_queue = RTE_PMD_PCAP_MAX_QUEUES;
993 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_PCAP_ARG,
994 &open_rx_pcap, &pcaps);
996 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_IFACE_ARG,
997 &open_rx_iface, &pcaps);
1003 * We check whether we want to open a TX stream to a real NIC or a
1006 dumpers.num_of_queue = rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG);
1007 if (dumpers.num_of_queue)
1010 dumpers.num_of_queue = rte_kvargs_count(kvlist,
1011 ETH_PCAP_TX_IFACE_ARG);
1013 if (dumpers.num_of_queue > RTE_PMD_PCAP_MAX_QUEUES)
1014 dumpers.num_of_queue = RTE_PMD_PCAP_MAX_QUEUES;
1017 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_PCAP_ARG,
1018 &open_tx_pcap, &dumpers);
1020 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_IFACE_ARG,
1021 &open_tx_iface, &dumpers);
1027 ret = eth_from_pcaps(name, &pcaps, pcaps.num_of_queue, &dumpers,
1028 dumpers.num_of_queue, kvlist, single_iface, is_tx_pcap);
1031 rte_kvargs_free(kvlist);
1037 pmd_pcap_devuninit(const char *name)
1039 struct rte_eth_dev *eth_dev = NULL;
1041 RTE_LOG(INFO, PMD, "Closing pcap ethdev on numa socket %u\n",
1047 /* reserve an ethdev entry */
1048 eth_dev = rte_eth_dev_allocated(name);
1049 if (eth_dev == NULL)
1052 rte_free(eth_dev->data->dev_private);
1053 rte_free(eth_dev->data);
1055 rte_eth_dev_release_port(eth_dev);
1060 static struct rte_vdev_driver pmd_pcap_drv = {
1061 .init = pmd_pcap_devinit,
1062 .uninit = pmd_pcap_devuninit,
1065 DRIVER_REGISTER_VDEV(net_pcap, pmd_pcap_drv);
1066 DRIVER_REGISTER_PARAM_STRING(net_pcap,
1067 ETH_PCAP_RX_PCAP_ARG "=<string> "
1068 ETH_PCAP_TX_PCAP_ARG "=<string> "
1069 ETH_PCAP_RX_IFACE_ARG "=<ifc> "
1070 ETH_PCAP_TX_IFACE_ARG "=<ifc> "
1071 ETH_PCAP_IFACE_ARG "=<ifc>");