4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5 * Copyright(c) 2014 6WIND S.A.
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9 * modification, are permitted provided that the following conditions
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15 * notice, this list of conditions and the following disclaimer in
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19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 #include <rte_ethdev.h>
38 #include <rte_malloc.h>
39 #include <rte_memcpy.h>
40 #include <rte_string_fns.h>
41 #include <rte_cycles.h>
42 #include <rte_kvargs.h>
49 #define RTE_ETH_PCAP_SNAPSHOT_LEN 65535
50 #define RTE_ETH_PCAP_SNAPLEN 4096
51 #define RTE_ETH_PCAP_PROMISC 1
52 #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 static char errbuf[PCAP_ERRBUF_SIZE];
60 static struct timeval start_time;
61 static uint64_t start_cycles;
64 struct pcap_rx_queue {
67 struct rte_mempool *mb_pool;
68 volatile unsigned long rx_pkts;
69 volatile unsigned long err_pkts;
74 struct pcap_tx_queue {
75 pcap_dumper_t *dumper;
77 volatile unsigned long tx_pkts;
78 volatile unsigned long err_pkts;
85 pcap_t *pcaps[RTE_PMD_RING_MAX_RX_RINGS];
86 const char *names[RTE_PMD_RING_MAX_RX_RINGS];
87 const char *types[RTE_PMD_RING_MAX_RX_RINGS];
92 pcap_dumper_t *dumpers[RTE_PMD_RING_MAX_TX_RINGS];
93 pcap_t *pcaps[RTE_PMD_RING_MAX_RX_RINGS];
94 const char *names[RTE_PMD_RING_MAX_RX_RINGS];
95 const char *types[RTE_PMD_RING_MAX_RX_RINGS];
98 struct pmd_internals {
99 struct pcap_rx_queue rx_queue[RTE_PMD_RING_MAX_RX_RINGS];
100 struct pcap_tx_queue tx_queue[RTE_PMD_RING_MAX_TX_RINGS];
101 unsigned nb_rx_queues;
102 unsigned nb_tx_queues;
107 const char *valid_arguments[] = {
108 ETH_PCAP_RX_PCAP_ARG,
109 ETH_PCAP_TX_PCAP_ARG,
110 ETH_PCAP_RX_IFACE_ARG,
111 ETH_PCAP_TX_IFACE_ARG,
116 static int open_single_tx_pcap(const char *pcap_filename, pcap_dumper_t **dumper);
117 static int open_single_rx_pcap(const char *pcap_filename, pcap_t **pcap);
118 static int open_single_iface(const char *iface, pcap_t **pcap);
120 static struct ether_addr eth_addr = { .addr_bytes = { 0, 0, 0, 0x1, 0x2, 0x3 } };
121 static const char *drivername = "Pcap PMD";
122 static struct rte_eth_link pmd_link = {
124 .link_duplex = ETH_LINK_FULL_DUPLEX,
130 eth_pcap_rx(void *queue,
131 struct rte_mbuf **bufs,
135 struct pcap_pkthdr header;
136 const u_char *packet;
137 struct rte_mbuf *mbuf;
138 struct pcap_rx_queue *pcap_q = queue;
139 struct rte_pktmbuf_pool_private *mbp_priv;
143 if (unlikely(pcap_q->pcap == NULL || nb_pkts == 0))
146 /* Reads the given number of packets from the pcap file one by one
147 * and copies the packet data into a newly allocated mbuf to return.
149 for (i = 0; i < nb_pkts; i++) {
150 /* Get the next PCAP packet */
151 packet = pcap_next(pcap_q->pcap, &header);
152 if (unlikely(packet == NULL))
155 mbuf = rte_pktmbuf_alloc(pcap_q->mb_pool);
156 if (unlikely(mbuf == NULL))
159 /* Now get the space available for data in the mbuf */
160 mbp_priv = rte_mempool_get_priv(pcap_q->mb_pool);
161 buf_size = (uint16_t) (mbp_priv->mbuf_data_room_size -
162 RTE_PKTMBUF_HEADROOM);
164 if (header.len <= buf_size) {
165 /* pcap packet will fit in the mbuf, go ahead and copy */
166 rte_memcpy(rte_pktmbuf_mtod(mbuf, void *), packet,
168 mbuf->data_len = (uint16_t)header.len;
169 mbuf->pkt_len = mbuf->data_len;
170 mbuf->port = pcap_q->in_port;
174 /* pcap packet will not fit in the mbuf, so drop packet */
176 "PCAP packet %d bytes will not fit in mbuf (%d bytes)\n",
177 header.len, buf_size);
178 rte_pktmbuf_free(mbuf);
181 pcap_q->rx_pkts += num_rx;
186 calculate_timestamp(struct timeval *ts) {
188 struct timeval cur_time;
190 cycles = rte_get_timer_cycles() - start_cycles;
191 cur_time.tv_sec = cycles / hz;
192 cur_time.tv_usec = (cycles % hz) * 10e6 / hz;
193 timeradd(&start_time, &cur_time, ts);
197 * Callback to handle writing packets to a pcap file.
200 eth_pcap_tx_dumper(void *queue,
201 struct rte_mbuf **bufs,
205 struct rte_mbuf *mbuf;
206 struct pcap_tx_queue *dumper_q = queue;
208 struct pcap_pkthdr header;
210 if (dumper_q->dumper == NULL || nb_pkts == 0)
213 /* writes the nb_pkts packets to the previously opened pcap file dumper */
214 for (i = 0; i < nb_pkts; i++) {
216 calculate_timestamp(&header.ts);
217 header.len = mbuf->data_len;
218 header.caplen = header.len;
219 pcap_dump((u_char *)dumper_q->dumper, &header,
220 rte_pktmbuf_mtod(mbuf, void*));
221 rte_pktmbuf_free(mbuf);
226 * Since there's no place to hook a callback when the forwarding
227 * process stops and to make sure the pcap file is actually written,
228 * we flush the pcap dumper within each burst.
230 pcap_dump_flush(dumper_q->dumper);
231 dumper_q->tx_pkts += num_tx;
232 dumper_q->err_pkts += nb_pkts - num_tx;
237 * Callback to handle sending packets through a real NIC.
240 eth_pcap_tx(void *queue,
241 struct rte_mbuf **bufs,
246 struct rte_mbuf *mbuf;
247 struct pcap_tx_queue *tx_queue = queue;
250 if (unlikely(nb_pkts == 0 || tx_queue->pcap == NULL))
253 for (i = 0; i < nb_pkts; i++) {
255 ret = pcap_sendpacket(tx_queue->pcap,
256 rte_pktmbuf_mtod(mbuf, u_char *),
258 if (unlikely(ret != 0))
261 rte_pktmbuf_free(mbuf);
264 tx_queue->tx_pkts += num_tx;
265 tx_queue->err_pkts += nb_pkts - num_tx;
270 eth_dev_start(struct rte_eth_dev *dev)
273 struct pmd_internals *internals = dev->data->dev_private;
274 struct pcap_tx_queue *tx;
275 struct pcap_rx_queue *rx;
277 /* Special iface case. Single pcap is open and shared between tx/rx. */
278 if (internals->single_iface) {
279 tx = &internals->tx_queue[0];
280 rx = &internals->rx_queue[0];
282 if (!tx->pcap && strcmp(tx->type, ETH_PCAP_IFACE_ARG) == 0) {
283 if (open_single_iface(tx->name, &tx->pcap) < 0)
290 /* If not open already, open tx pcaps/dumpers */
291 for (i = 0; i < internals->nb_tx_queues; i++) {
292 tx = &internals->tx_queue[i];
294 if (!tx->dumper && strcmp(tx->type, ETH_PCAP_TX_PCAP_ARG) == 0) {
295 if (open_single_tx_pcap(tx->name, &tx->dumper) < 0)
299 else if (!tx->pcap && strcmp(tx->type, ETH_PCAP_TX_IFACE_ARG) == 0) {
300 if (open_single_iface(tx->name, &tx->pcap) < 0)
305 /* If not open already, open rx pcaps */
306 for (i = 0; i < internals->nb_rx_queues; i++) {
307 rx = &internals->rx_queue[i];
309 if (rx->pcap != NULL)
312 if (strcmp(rx->type, ETH_PCAP_RX_PCAP_ARG) == 0) {
313 if (open_single_rx_pcap(rx->name, &rx->pcap) < 0)
317 else if (strcmp(rx->type, ETH_PCAP_RX_IFACE_ARG) == 0) {
318 if (open_single_iface(rx->name, &rx->pcap) < 0)
325 dev->data->dev_link.link_status = 1;
330 * This function gets called when the current port gets stopped.
331 * Is the only place for us to close all the tx streams dumpers.
332 * If not called the dumpers will be flushed within each tx burst.
335 eth_dev_stop(struct rte_eth_dev *dev)
338 struct pmd_internals *internals = dev->data->dev_private;
339 struct pcap_tx_queue *tx;
340 struct pcap_rx_queue *rx;
342 /* Special iface case. Single pcap is open and shared between tx/rx. */
343 if (internals->single_iface) {
344 tx = &internals->tx_queue[0];
345 rx = &internals->rx_queue[0];
346 pcap_close(tx->pcap);
352 for (i = 0; i < internals->nb_tx_queues; i++) {
353 tx = &internals->tx_queue[i];
355 if (tx->dumper != NULL) {
356 pcap_dump_close(tx->dumper);
360 if (tx->pcap != NULL) {
361 pcap_close(tx->pcap);
366 for (i = 0; i < internals->nb_rx_queues; i++) {
367 rx = &internals->rx_queue[i];
369 if (rx->pcap != NULL) {
370 pcap_close(rx->pcap);
376 dev->data->dev_link.link_status = 0;
380 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
386 eth_dev_info(struct rte_eth_dev *dev,
387 struct rte_eth_dev_info *dev_info)
389 struct pmd_internals *internals = dev->data->dev_private;
390 dev_info->driver_name = drivername;
391 dev_info->if_index = internals->if_index;
392 dev_info->max_mac_addrs = 1;
393 dev_info->max_rx_pktlen = (uint32_t) -1;
394 dev_info->max_rx_queues = (uint16_t)internals->nb_rx_queues;
395 dev_info->max_tx_queues = (uint16_t)internals->nb_tx_queues;
396 dev_info->min_rx_bufsize = 0;
397 dev_info->pci_dev = NULL;
401 eth_stats_get(struct rte_eth_dev *dev,
402 struct rte_eth_stats *igb_stats)
405 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
406 const struct pmd_internals *internal = dev->data->dev_private;
408 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && i < internal->nb_rx_queues;
410 igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
411 rx_total += igb_stats->q_ipackets[i];
414 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && i < internal->nb_tx_queues;
416 igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
417 igb_stats->q_errors[i] = internal->tx_queue[i].err_pkts;
418 tx_total += igb_stats->q_opackets[i];
419 tx_err_total += igb_stats->q_errors[i];
422 igb_stats->ipackets = rx_total;
423 igb_stats->opackets = tx_total;
424 igb_stats->oerrors = tx_err_total;
428 eth_stats_reset(struct rte_eth_dev *dev)
431 struct pmd_internals *internal = dev->data->dev_private;
432 for (i = 0; i < internal->nb_rx_queues; i++)
433 internal->rx_queue[i].rx_pkts = 0;
434 for (i = 0; i < internal->nb_tx_queues; i++) {
435 internal->tx_queue[i].tx_pkts = 0;
436 internal->tx_queue[i].err_pkts = 0;
441 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
446 eth_queue_release(void *q __rte_unused)
451 eth_link_update(struct rte_eth_dev *dev __rte_unused,
452 int wait_to_complete __rte_unused)
458 eth_rx_queue_setup(struct rte_eth_dev *dev,
459 uint16_t rx_queue_id,
460 uint16_t nb_rx_desc __rte_unused,
461 unsigned int socket_id __rte_unused,
462 const struct rte_eth_rxconf *rx_conf __rte_unused,
463 struct rte_mempool *mb_pool)
465 struct pmd_internals *internals = dev->data->dev_private;
466 struct pcap_rx_queue *pcap_q = &internals->rx_queue[rx_queue_id];
467 pcap_q->mb_pool = mb_pool;
468 dev->data->rx_queues[rx_queue_id] = pcap_q;
469 pcap_q->in_port = dev->data->port_id;
474 eth_tx_queue_setup(struct rte_eth_dev *dev,
475 uint16_t tx_queue_id,
476 uint16_t nb_tx_desc __rte_unused,
477 unsigned int socket_id __rte_unused,
478 const struct rte_eth_txconf *tx_conf __rte_unused)
481 struct pmd_internals *internals = dev->data->dev_private;
482 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
486 static struct eth_dev_ops ops = {
487 .dev_start = eth_dev_start,
488 .dev_stop = eth_dev_stop,
489 .dev_close = eth_dev_close,
490 .dev_configure = eth_dev_configure,
491 .dev_infos_get = eth_dev_info,
492 .rx_queue_setup = eth_rx_queue_setup,
493 .tx_queue_setup = eth_tx_queue_setup,
494 .rx_queue_release = eth_queue_release,
495 .tx_queue_release = eth_queue_release,
496 .link_update = eth_link_update,
497 .stats_get = eth_stats_get,
498 .stats_reset = eth_stats_reset,
502 * Function handler that opens the pcap file for reading a stores a
503 * reference of it for use it later on.
506 open_rx_pcap(const char *key, const char *value, void *extra_args)
509 const char *pcap_filename = value;
510 struct rx_pcaps *pcaps = extra_args;
513 for (i = 0; i < pcaps->num_of_rx; i++) {
514 if (open_single_rx_pcap(pcap_filename, &pcap) < 0)
517 pcaps->pcaps[i] = pcap;
518 pcaps->names[i] = pcap_filename;
519 pcaps->types[i] = key;
526 open_single_rx_pcap(const char *pcap_filename, pcap_t **pcap)
528 if ((*pcap = pcap_open_offline(pcap_filename, errbuf)) == NULL) {
529 RTE_LOG(ERR, PMD, "Couldn't open %s: %s\n", pcap_filename, errbuf);
536 * Opens a pcap file for writing and stores a reference to it
537 * for use it later on.
540 open_tx_pcap(const char *key, const char *value, void *extra_args)
543 const char *pcap_filename = value;
544 struct tx_pcaps *dumpers = extra_args;
545 pcap_dumper_t *dumper;
547 for (i = 0; i < dumpers->num_of_tx; i++) {
548 if (open_single_tx_pcap(pcap_filename, &dumper) < 0)
551 dumpers->dumpers[i] = dumper;
552 dumpers->names[i] = pcap_filename;
553 dumpers->types[i] = key;
560 open_single_tx_pcap(const char *pcap_filename, pcap_dumper_t **dumper)
564 * We need to create a dummy empty pcap_t to use it
565 * with pcap_dump_open(). We create big enough an Ethernet
569 if ((tx_pcap = pcap_open_dead(DLT_EN10MB, RTE_ETH_PCAP_SNAPSHOT_LEN))
571 RTE_LOG(ERR, PMD, "Couldn't create dead pcap\n");
575 /* The dumper is created using the previous pcap_t reference */
576 if ((*dumper = pcap_dump_open(tx_pcap, pcap_filename)) == NULL) {
577 RTE_LOG(ERR, PMD, "Couldn't open %s for writing.\n", pcap_filename);
585 * pcap_open_live wrapper function
588 open_iface_live(const char *iface, pcap_t **pcap) {
589 *pcap = pcap_open_live(iface, RTE_ETH_PCAP_SNAPLEN,
590 RTE_ETH_PCAP_PROMISC, RTE_ETH_PCAP_TIMEOUT, errbuf);
593 RTE_LOG(ERR, PMD, "Couldn't open %s: %s\n", iface, errbuf);
600 * Opens an interface for reading and writing
603 open_rx_tx_iface(const char *key, const char *value, void *extra_args)
605 const char *iface = value;
606 struct rx_pcaps *pcaps = extra_args;
609 if (open_single_iface(iface, &pcap) < 0)
612 pcaps->pcaps[0] = pcap;
613 pcaps->names[0] = iface;
614 pcaps->types[0] = key;
620 * Opens a NIC for reading packets from it
623 open_rx_iface(const char *key, const char *value, void *extra_args)
626 const char *iface = value;
627 struct rx_pcaps *pcaps = extra_args;
630 for (i = 0; i < pcaps->num_of_rx; i++) {
631 if (open_single_iface(iface, &pcap) < 0)
633 pcaps->pcaps[i] = pcap;
634 pcaps->names[i] = iface;
635 pcaps->types[i] = key;
642 * Opens a NIC for writing packets to it
645 open_tx_iface(const char *key, const char *value, void *extra_args)
648 const char *iface = value;
649 struct tx_pcaps *pcaps = extra_args;
652 for (i = 0; i < pcaps->num_of_tx; i++) {
653 if (open_single_iface(iface, &pcap) < 0)
655 pcaps->pcaps[i] = pcap;
656 pcaps->names[i] = iface;
657 pcaps->types[i] = key;
664 open_single_iface(const char *iface, pcap_t **pcap)
666 if (open_iface_live(iface, pcap) < 0) {
667 RTE_LOG(ERR, PMD, "Couldn't open interface %s\n", iface);
675 rte_pmd_init_internals(const char *name, const unsigned nb_rx_queues,
676 const unsigned nb_tx_queues,
677 const unsigned numa_node,
678 struct pmd_internals **internals,
679 struct rte_eth_dev **eth_dev,
680 struct rte_kvargs *kvlist)
682 struct rte_eth_dev_data *data = NULL;
683 struct rte_pci_device *pci_dev = NULL;
685 struct rte_kvargs_pair *pair = NULL;
687 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
688 pair = &kvlist->pairs[k_idx];
689 if (strstr(pair->key, ETH_PCAP_IFACE_ARG) != NULL)
694 "Creating pcap-backed ethdev on numa socket %u\n", numa_node);
696 /* now do all data allocation - for eth_dev structure, dummy pci driver
697 * and internal (private) data
699 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
703 pci_dev = rte_zmalloc_socket(name, sizeof(*pci_dev), 0, numa_node);
707 *internals = rte_zmalloc_socket(name, sizeof(**internals), 0, numa_node);
708 if (*internals == NULL)
711 /* reserve an ethdev entry */
712 *eth_dev = rte_eth_dev_allocate(name);
713 if (*eth_dev == NULL)
716 /* now put it all together
717 * - store queue data in internals,
718 * - store numa_node info in pci_driver
719 * - point eth_dev_data to internals and pci_driver
720 * - and point eth_dev structure to new eth_dev_data structure
722 /* NOTE: we'll replace the data element, of originally allocated eth_dev
723 * so the rings are local per-process */
725 (*internals)->nb_rx_queues = nb_rx_queues;
726 (*internals)->nb_tx_queues = nb_tx_queues;
729 (*internals)->if_index = 0;
731 (*internals)->if_index = if_nametoindex(pair->value);
733 pci_dev->numa_node = numa_node;
735 data->dev_private = *internals;
736 data->port_id = (*eth_dev)->data->port_id;
737 snprintf(data->name, sizeof(data->name), "%s", (*eth_dev)->data->name);
738 data->nb_rx_queues = (uint16_t)nb_rx_queues;
739 data->nb_tx_queues = (uint16_t)nb_tx_queues;
740 data->dev_link = pmd_link;
741 data->mac_addrs = ð_addr;
743 (*eth_dev)->data = data;
744 (*eth_dev)->dev_ops = &ops;
745 (*eth_dev)->pci_dev = pci_dev;
754 rte_free(*internals);
759 rte_eth_from_pcaps_n_dumpers(const char *name,
760 struct rx_pcaps *rx_queues,
761 const unsigned nb_rx_queues,
762 struct tx_pcaps *tx_queues,
763 const unsigned nb_tx_queues,
764 const unsigned numa_node,
765 struct rte_kvargs *kvlist)
767 struct pmd_internals *internals = NULL;
768 struct rte_eth_dev *eth_dev = NULL;
771 /* do some parameter checking */
772 if (rx_queues == NULL && nb_rx_queues > 0)
774 if (tx_queues == NULL && nb_tx_queues > 0)
777 if (rte_pmd_init_internals(name, nb_rx_queues, nb_tx_queues, numa_node,
778 &internals, ð_dev, kvlist) < 0)
781 for (i = 0; i < nb_rx_queues; i++) {
782 internals->rx_queue->pcap = rx_queues->pcaps[i];
783 internals->rx_queue->name = rx_queues->names[i];
784 internals->rx_queue->type = rx_queues->types[i];
786 for (i = 0; i < nb_tx_queues; i++) {
787 internals->tx_queue->dumper = tx_queues->dumpers[i];
788 internals->tx_queue->name = tx_queues->names[i];
789 internals->tx_queue->type = tx_queues->types[i];
792 /* using multiple pcaps/interfaces */
793 internals->single_iface = 0;
795 eth_dev->rx_pkt_burst = eth_pcap_rx;
796 eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
801 struct rx_pcaps pcaps;
803 rte_eth_from_pcaps(const char *name,
804 struct rx_pcaps *rx_queues,
805 const unsigned nb_rx_queues,
806 struct tx_pcaps *tx_queues,
807 const unsigned nb_tx_queues,
808 const unsigned numa_node,
809 struct rte_kvargs *kvlist,
812 struct pmd_internals *internals = NULL;
813 struct rte_eth_dev *eth_dev = NULL;
816 /* do some parameter checking */
817 if (rx_queues == NULL && nb_rx_queues > 0)
819 if (tx_queues == NULL && nb_tx_queues > 0)
822 if (rte_pmd_init_internals(name, nb_rx_queues, nb_tx_queues, numa_node,
823 &internals, ð_dev, kvlist) < 0)
826 for (i = 0; i < nb_rx_queues; i++) {
827 internals->rx_queue->pcap = rx_queues->pcaps[i];
828 internals->rx_queue->name = rx_queues->names[i];
829 internals->rx_queue->type = rx_queues->types[i];
831 for (i = 0; i < nb_tx_queues; i++) {
832 internals->tx_queue->pcap = tx_queues->pcaps[i];
833 internals->tx_queue->name = tx_queues->names[i];
834 internals->tx_queue->type = tx_queues->types[i];
837 /* store wether we are using a single interface for rx/tx or not */
838 internals->single_iface = single_iface;
840 eth_dev->rx_pkt_burst = eth_pcap_rx;
841 eth_dev->tx_pkt_burst = eth_pcap_tx;
848 rte_pmd_pcap_devinit(const char *name, const char *params)
850 unsigned numa_node, using_dumpers = 0;
852 struct rte_kvargs *kvlist;
853 struct rx_pcaps pcaps;
854 struct tx_pcaps dumpers;
856 RTE_LOG(INFO, PMD, "Initializing pmd_pcap for %s\n", name);
858 numa_node = rte_socket_id();
860 gettimeofday(&start_time, NULL);
861 start_cycles = rte_get_timer_cycles();
862 hz = rte_get_timer_hz();
864 kvlist = rte_kvargs_parse(params, valid_arguments);
869 * If iface argument is passed we open the NICs and use them for
872 if (rte_kvargs_count(kvlist, ETH_PCAP_IFACE_ARG) == 1) {
874 ret = rte_kvargs_process(kvlist, ETH_PCAP_IFACE_ARG,
875 &open_rx_tx_iface, &pcaps);
878 dumpers.pcaps[0] = pcaps.pcaps[0];
879 dumpers.names[0] = pcaps.names[0];
880 dumpers.types[0] = pcaps.types[0];
881 return rte_eth_from_pcaps(name, &pcaps, 1, &dumpers, 1,
882 numa_node, kvlist, 1);
886 * We check whether we want to open a RX stream from a real NIC or a
889 if ((pcaps.num_of_rx = rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG))) {
890 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_PCAP_ARG,
891 &open_rx_pcap, &pcaps);
893 pcaps.num_of_rx = rte_kvargs_count(kvlist,
894 ETH_PCAP_RX_IFACE_ARG);
895 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_IFACE_ARG,
896 &open_rx_iface, &pcaps);
903 * We check whether we want to open a TX stream to a real NIC or a
906 if ((dumpers.num_of_tx = rte_kvargs_count(kvlist,
907 ETH_PCAP_TX_PCAP_ARG))) {
908 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_PCAP_ARG,
909 &open_tx_pcap, &dumpers);
912 dumpers.num_of_tx = rte_kvargs_count(kvlist,
913 ETH_PCAP_TX_IFACE_ARG);
914 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_IFACE_ARG,
915 &open_tx_iface, &dumpers);
922 return rte_eth_from_pcaps_n_dumpers(name, &pcaps, pcaps.num_of_rx,
923 &dumpers, dumpers.num_of_tx, numa_node, kvlist);
925 return rte_eth_from_pcaps(name, &pcaps, pcaps.num_of_rx, &dumpers,
926 dumpers.num_of_tx, numa_node, kvlist, 0);
930 static struct rte_driver pmd_pcap_drv = {
933 .init = rte_pmd_pcap_devinit,
936 PMD_REGISTER_DRIVER(pmd_pcap_drv);