4 * Copyright(c) 2010-2016 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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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)) {
226 rte_pktmbuf_free(mbuf);
231 mbuf->pkt_len = (uint16_t)header.caplen;
232 mbuf->port = pcap_q->in_port;
235 rx_bytes += header.caplen;
237 pcap_q->rx_stat.pkts += num_rx;
238 pcap_q->rx_stat.bytes += rx_bytes;
244 calculate_timestamp(struct timeval *ts) {
246 struct timeval cur_time;
248 cycles = rte_get_timer_cycles() - start_cycles;
249 cur_time.tv_sec = cycles / hz;
250 cur_time.tv_usec = (cycles % hz) * 10e6 / hz;
251 timeradd(&start_time, &cur_time, ts);
255 * Callback to handle writing packets to a pcap file.
258 eth_pcap_tx_dumper(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
261 struct rte_mbuf *mbuf;
262 struct pcap_tx_queue *dumper_q = queue;
264 uint32_t tx_bytes = 0;
265 struct pcap_pkthdr header;
267 if (dumper_q->dumper == NULL || nb_pkts == 0)
270 /* writes the nb_pkts packets to the previously opened pcap file
272 for (i = 0; i < nb_pkts; i++) {
274 calculate_timestamp(&header.ts);
275 header.len = mbuf->pkt_len;
276 header.caplen = header.len;
278 if (likely(mbuf->nb_segs == 1)) {
279 pcap_dump((u_char *)dumper_q->dumper, &header,
280 rte_pktmbuf_mtod(mbuf, void*));
282 if (mbuf->pkt_len <= ETHER_MAX_JUMBO_FRAME_LEN) {
283 eth_pcap_gather_data(tx_pcap_data, mbuf);
284 pcap_dump((u_char *)dumper_q->dumper, &header,
288 "Dropping PCAP packet. Size (%d) > max jumbo size (%d).\n",
290 ETHER_MAX_JUMBO_FRAME_LEN);
292 rte_pktmbuf_free(mbuf);
297 rte_pktmbuf_free(mbuf);
299 tx_bytes += mbuf->pkt_len;
303 * Since there's no place to hook a callback when the forwarding
304 * process stops and to make sure the pcap file is actually written,
305 * we flush the pcap dumper within each burst.
307 pcap_dump_flush(dumper_q->dumper);
308 dumper_q->tx_stat.pkts += num_tx;
309 dumper_q->tx_stat.bytes += tx_bytes;
310 dumper_q->tx_stat.err_pkts += nb_pkts - num_tx;
316 * Callback to handle sending packets through a real NIC.
319 eth_pcap_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
323 struct rte_mbuf *mbuf;
324 struct pcap_tx_queue *tx_queue = queue;
326 uint32_t tx_bytes = 0;
328 if (unlikely(nb_pkts == 0 || tx_queue->pcap == NULL))
331 for (i = 0; i < nb_pkts; i++) {
334 if (likely(mbuf->nb_segs == 1)) {
335 ret = pcap_sendpacket(tx_queue->pcap,
336 rte_pktmbuf_mtod(mbuf, u_char *),
339 if (mbuf->pkt_len <= ETHER_MAX_JUMBO_FRAME_LEN) {
340 eth_pcap_gather_data(tx_pcap_data, mbuf);
341 ret = pcap_sendpacket(tx_queue->pcap,
342 tx_pcap_data, mbuf->pkt_len);
345 "Dropping PCAP packet. Size (%d) > max jumbo size (%d).\n",
347 ETHER_MAX_JUMBO_FRAME_LEN);
349 rte_pktmbuf_free(mbuf);
354 if (unlikely(ret != 0))
357 tx_bytes += mbuf->pkt_len;
358 rte_pktmbuf_free(mbuf);
361 tx_queue->tx_stat.pkts += num_tx;
362 tx_queue->tx_stat.bytes += tx_bytes;
363 tx_queue->tx_stat.err_pkts += nb_pkts - num_tx;
369 * pcap_open_live wrapper function
372 open_iface_live(const char *iface, pcap_t **pcap) {
373 *pcap = pcap_open_live(iface, RTE_ETH_PCAP_SNAPLEN,
374 RTE_ETH_PCAP_PROMISC, RTE_ETH_PCAP_TIMEOUT, errbuf);
377 RTE_LOG(ERR, PMD, "Couldn't open %s: %s\n", iface, errbuf);
385 open_single_iface(const char *iface, pcap_t **pcap)
387 if (open_iface_live(iface, pcap) < 0) {
388 RTE_LOG(ERR, PMD, "Couldn't open interface %s\n", iface);
396 open_single_tx_pcap(const char *pcap_filename, pcap_dumper_t **dumper)
401 * We need to create a dummy empty pcap_t to use it
402 * with pcap_dump_open(). We create big enough an Ethernet
405 tx_pcap = pcap_open_dead(DLT_EN10MB, RTE_ETH_PCAP_SNAPSHOT_LEN);
406 if (tx_pcap == NULL) {
407 RTE_LOG(ERR, PMD, "Couldn't create dead pcap\n");
411 /* The dumper is created using the previous pcap_t reference */
412 *dumper = pcap_dump_open(tx_pcap, pcap_filename);
413 if (*dumper == NULL) {
414 RTE_LOG(ERR, PMD, "Couldn't open %s for writing.\n",
423 open_single_rx_pcap(const char *pcap_filename, pcap_t **pcap)
425 *pcap = pcap_open_offline(pcap_filename, errbuf);
427 RTE_LOG(ERR, PMD, "Couldn't open %s: %s\n", pcap_filename,
436 eth_dev_start(struct rte_eth_dev *dev)
439 struct pmd_internals *internals = dev->data->dev_private;
440 struct pcap_tx_queue *tx;
441 struct pcap_rx_queue *rx;
443 /* Special iface case. Single pcap is open and shared between tx/rx. */
444 if (internals->single_iface) {
445 tx = &internals->tx_queue[0];
446 rx = &internals->rx_queue[0];
448 if (!tx->pcap && strcmp(tx->type, ETH_PCAP_IFACE_ARG) == 0) {
449 if (open_single_iface(tx->name, &tx->pcap) < 0)
456 /* If not open already, open tx pcaps/dumpers */
457 for (i = 0; i < dev->data->nb_tx_queues; i++) {
458 tx = &internals->tx_queue[i];
461 strcmp(tx->type, ETH_PCAP_TX_PCAP_ARG) == 0) {
462 if (open_single_tx_pcap(tx->name, &tx->dumper) < 0)
464 } else if (!tx->pcap &&
465 strcmp(tx->type, ETH_PCAP_TX_IFACE_ARG) == 0) {
466 if (open_single_iface(tx->name, &tx->pcap) < 0)
471 /* If not open already, open rx pcaps */
472 for (i = 0; i < dev->data->nb_rx_queues; i++) {
473 rx = &internals->rx_queue[i];
475 if (rx->pcap != NULL)
478 if (strcmp(rx->type, ETH_PCAP_RX_PCAP_ARG) == 0) {
479 if (open_single_rx_pcap(rx->name, &rx->pcap) < 0)
481 } else if (strcmp(rx->type, ETH_PCAP_RX_IFACE_ARG) == 0) {
482 if (open_single_iface(rx->name, &rx->pcap) < 0)
488 dev->data->dev_link.link_status = ETH_LINK_UP;
494 * This function gets called when the current port gets stopped.
495 * Is the only place for us to close all the tx streams dumpers.
496 * If not called the dumpers will be flushed within each tx burst.
499 eth_dev_stop(struct rte_eth_dev *dev)
502 struct pmd_internals *internals = dev->data->dev_private;
503 struct pcap_tx_queue *tx;
504 struct pcap_rx_queue *rx;
506 /* Special iface case. Single pcap is open and shared between tx/rx. */
507 if (internals->single_iface) {
508 tx = &internals->tx_queue[0];
509 rx = &internals->rx_queue[0];
510 pcap_close(tx->pcap);
516 for (i = 0; i < dev->data->nb_tx_queues; i++) {
517 tx = &internals->tx_queue[i];
519 if (tx->dumper != NULL) {
520 pcap_dump_close(tx->dumper);
524 if (tx->pcap != NULL) {
525 pcap_close(tx->pcap);
530 for (i = 0; i < dev->data->nb_rx_queues; i++) {
531 rx = &internals->rx_queue[i];
533 if (rx->pcap != NULL) {
534 pcap_close(rx->pcap);
540 dev->data->dev_link.link_status = ETH_LINK_DOWN;
544 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
550 eth_dev_info(struct rte_eth_dev *dev,
551 struct rte_eth_dev_info *dev_info)
553 struct pmd_internals *internals = dev->data->dev_private;
555 dev_info->driver_name = drivername;
556 dev_info->if_index = internals->if_index;
557 dev_info->max_mac_addrs = 1;
558 dev_info->max_rx_pktlen = (uint32_t) -1;
559 dev_info->max_rx_queues = dev->data->nb_rx_queues;
560 dev_info->max_tx_queues = dev->data->nb_tx_queues;
561 dev_info->min_rx_bufsize = 0;
565 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
568 unsigned long rx_packets_total = 0, rx_bytes_total = 0;
569 unsigned long tx_packets_total = 0, tx_bytes_total = 0;
570 unsigned long tx_packets_err_total = 0;
571 const struct pmd_internals *internal = dev->data->dev_private;
573 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
574 i < dev->data->nb_rx_queues; i++) {
575 stats->q_ipackets[i] = internal->rx_queue[i].rx_stat.pkts;
576 stats->q_ibytes[i] = internal->rx_queue[i].rx_stat.bytes;
577 rx_packets_total += stats->q_ipackets[i];
578 rx_bytes_total += stats->q_ibytes[i];
581 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
582 i < dev->data->nb_tx_queues; i++) {
583 stats->q_opackets[i] = internal->tx_queue[i].tx_stat.pkts;
584 stats->q_obytes[i] = internal->tx_queue[i].tx_stat.bytes;
585 stats->q_errors[i] = internal->tx_queue[i].tx_stat.err_pkts;
586 tx_packets_total += stats->q_opackets[i];
587 tx_bytes_total += stats->q_obytes[i];
588 tx_packets_err_total += stats->q_errors[i];
591 stats->ipackets = rx_packets_total;
592 stats->ibytes = rx_bytes_total;
593 stats->opackets = tx_packets_total;
594 stats->obytes = tx_bytes_total;
595 stats->oerrors = tx_packets_err_total;
599 eth_stats_reset(struct rte_eth_dev *dev)
602 struct pmd_internals *internal = dev->data->dev_private;
604 for (i = 0; i < dev->data->nb_rx_queues; i++) {
605 internal->rx_queue[i].rx_stat.pkts = 0;
606 internal->rx_queue[i].rx_stat.bytes = 0;
609 for (i = 0; i < dev->data->nb_tx_queues; i++) {
610 internal->tx_queue[i].tx_stat.pkts = 0;
611 internal->tx_queue[i].tx_stat.bytes = 0;
612 internal->tx_queue[i].tx_stat.err_pkts = 0;
617 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
622 eth_queue_release(void *q __rte_unused)
627 eth_link_update(struct rte_eth_dev *dev __rte_unused,
628 int wait_to_complete __rte_unused)
634 eth_rx_queue_setup(struct rte_eth_dev *dev,
635 uint16_t rx_queue_id,
636 uint16_t nb_rx_desc __rte_unused,
637 unsigned int socket_id __rte_unused,
638 const struct rte_eth_rxconf *rx_conf __rte_unused,
639 struct rte_mempool *mb_pool)
641 struct pmd_internals *internals = dev->data->dev_private;
642 struct pcap_rx_queue *pcap_q = &internals->rx_queue[rx_queue_id];
644 pcap_q->mb_pool = mb_pool;
645 dev->data->rx_queues[rx_queue_id] = pcap_q;
646 pcap_q->in_port = dev->data->port_id;
652 eth_tx_queue_setup(struct rte_eth_dev *dev,
653 uint16_t tx_queue_id,
654 uint16_t nb_tx_desc __rte_unused,
655 unsigned int socket_id __rte_unused,
656 const struct rte_eth_txconf *tx_conf __rte_unused)
658 struct pmd_internals *internals = dev->data->dev_private;
660 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
665 static const struct eth_dev_ops ops = {
666 .dev_start = eth_dev_start,
667 .dev_stop = eth_dev_stop,
668 .dev_close = eth_dev_close,
669 .dev_configure = eth_dev_configure,
670 .dev_infos_get = eth_dev_info,
671 .rx_queue_setup = eth_rx_queue_setup,
672 .tx_queue_setup = eth_tx_queue_setup,
673 .rx_queue_release = eth_queue_release,
674 .tx_queue_release = eth_queue_release,
675 .link_update = eth_link_update,
676 .stats_get = eth_stats_get,
677 .stats_reset = eth_stats_reset,
681 * Function handler that opens the pcap file for reading a stores a
682 * reference of it for use it later on.
685 open_rx_pcap(const char *key, const char *value, void *extra_args)
688 const char *pcap_filename = value;
689 struct pmd_devargs *rx = extra_args;
692 for (i = 0; i < rx->num_of_queue; i++) {
693 if (open_single_rx_pcap(pcap_filename, &pcap) < 0)
696 rx->queue[i].pcap = pcap;
697 rx->queue[i].name = pcap_filename;
698 rx->queue[i].type = key;
705 * Opens a pcap file for writing and stores a reference to it
706 * for use it later on.
709 open_tx_pcap(const char *key, const char *value, void *extra_args)
712 const char *pcap_filename = value;
713 struct pmd_devargs *dumpers = extra_args;
714 pcap_dumper_t *dumper;
716 for (i = 0; i < dumpers->num_of_queue; i++) {
717 if (open_single_tx_pcap(pcap_filename, &dumper) < 0)
720 dumpers->queue[i].dumper = dumper;
721 dumpers->queue[i].name = pcap_filename;
722 dumpers->queue[i].type = key;
729 * Opens an interface for reading and writing
732 open_rx_tx_iface(const char *key, const char *value, void *extra_args)
734 const char *iface = value;
735 struct pmd_devargs *tx = extra_args;
738 if (open_single_iface(iface, &pcap) < 0)
741 tx->queue[0].pcap = pcap;
742 tx->queue[0].name = iface;
743 tx->queue[0].type = key;
749 * Opens a NIC for reading packets from it
752 open_rx_iface(const char *key, const char *value, void *extra_args)
755 const char *iface = value;
756 struct pmd_devargs *rx = extra_args;
759 for (i = 0; i < rx->num_of_queue; i++) {
760 if (open_single_iface(iface, &pcap) < 0)
762 rx->queue[i].pcap = pcap;
763 rx->queue[i].name = iface;
764 rx->queue[i].type = key;
771 * Opens a NIC for writing packets to it
774 open_tx_iface(const char *key, const char *value, void *extra_args)
777 const char *iface = value;
778 struct pmd_devargs *tx = extra_args;
781 for (i = 0; i < tx->num_of_queue; i++) {
782 if (open_single_iface(iface, &pcap) < 0)
784 tx->queue[i].pcap = pcap;
785 tx->queue[i].name = iface;
786 tx->queue[i].type = key;
793 pmd_init_internals(const char *name, const unsigned int nb_rx_queues,
794 const unsigned int nb_tx_queues,
795 struct pmd_internals **internals,
796 struct rte_eth_dev **eth_dev)
798 struct rte_eth_dev_data *data = NULL;
799 unsigned int numa_node = rte_socket_id();
801 RTE_LOG(INFO, PMD, "Creating pcap-backed ethdev on numa socket %u\n",
804 /* now do all data allocation - for eth_dev structure
805 * and internal (private) data
807 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
811 *internals = rte_zmalloc_socket(name, sizeof(**internals), 0,
813 if (*internals == NULL)
816 /* reserve an ethdev entry */
817 *eth_dev = rte_eth_dev_allocate(name);
818 if (*eth_dev == NULL)
821 /* now put it all together
822 * - store queue data in internals,
823 * - store numa_node info in eth_dev
824 * - point eth_dev_data to internals
825 * - and point eth_dev structure to new eth_dev_data structure
827 data->dev_private = *internals;
828 data->port_id = (*eth_dev)->data->port_id;
829 snprintf(data->name, sizeof(data->name), "%s", (*eth_dev)->data->name);
830 data->nb_rx_queues = (uint16_t)nb_rx_queues;
831 data->nb_tx_queues = (uint16_t)nb_tx_queues;
832 data->dev_link = pmd_link;
833 data->mac_addrs = ð_addr;
836 * NOTE: we'll replace the data element, of originally allocated
837 * eth_dev so the rings are local per-process
839 (*eth_dev)->data = data;
840 (*eth_dev)->dev_ops = &ops;
841 (*eth_dev)->driver = NULL;
842 data->dev_flags = RTE_ETH_DEV_DETACHABLE;
843 data->kdrv = RTE_KDRV_NONE;
844 data->drv_name = drivername;
845 data->numa_node = numa_node;
851 rte_free(*internals);
857 eth_from_pcaps_common(const char *name, struct pmd_devargs *rx_queues,
858 const unsigned int nb_rx_queues, struct pmd_devargs *tx_queues,
859 const unsigned int nb_tx_queues, struct rte_kvargs *kvlist,
860 struct pmd_internals **internals, struct rte_eth_dev **eth_dev)
862 struct rte_kvargs_pair *pair = NULL;
866 /* do some parameter checking */
867 if (rx_queues == NULL && nb_rx_queues > 0)
869 if (tx_queues == NULL && nb_tx_queues > 0)
872 if (pmd_init_internals(name, nb_rx_queues, nb_tx_queues, internals,
876 for (i = 0; i < nb_rx_queues; i++) {
877 struct pcap_rx_queue *rx = &(*internals)->rx_queue[i];
878 struct devargs_queue *queue = &rx_queues->queue[i];
880 rx->pcap = queue->pcap;
881 snprintf(rx->name, sizeof(rx->name), "%s", queue->name);
882 snprintf(rx->type, sizeof(rx->type), "%s", queue->type);
885 for (i = 0; i < nb_tx_queues; i++) {
886 struct pcap_tx_queue *tx = &(*internals)->tx_queue[i];
887 struct devargs_queue *queue = &tx_queues->queue[i];
889 tx->dumper = queue->dumper;
890 tx->pcap = queue->pcap;
891 snprintf(tx->name, sizeof(tx->name), "%s", queue->name);
892 snprintf(tx->type, sizeof(tx->type), "%s", queue->type);
895 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
896 pair = &kvlist->pairs[k_idx];
897 if (strstr(pair->key, ETH_PCAP_IFACE_ARG) != NULL)
902 (*internals)->if_index = 0;
904 (*internals)->if_index = if_nametoindex(pair->value);
910 eth_from_pcaps(const char *name, struct pmd_devargs *rx_queues,
911 const unsigned int nb_rx_queues, struct pmd_devargs *tx_queues,
912 const unsigned int nb_tx_queues, struct rte_kvargs *kvlist,
913 int single_iface, unsigned int using_dumpers)
915 struct pmd_internals *internals = NULL;
916 struct rte_eth_dev *eth_dev = NULL;
919 ret = eth_from_pcaps_common(name, rx_queues, nb_rx_queues,
920 tx_queues, nb_tx_queues, kvlist, &internals, ð_dev);
925 /* store weather we are using a single interface for rx/tx or not */
926 internals->single_iface = single_iface;
928 eth_dev->rx_pkt_burst = eth_pcap_rx;
931 eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
933 eth_dev->tx_pkt_burst = eth_pcap_tx;
939 pmd_pcap_probe(const char *name, const char *params)
941 unsigned int is_rx_pcap = 0, is_tx_pcap = 0;
942 struct rte_kvargs *kvlist;
943 struct pmd_devargs pcaps = {0};
944 struct pmd_devargs dumpers = {0};
945 int single_iface = 0;
948 RTE_LOG(INFO, PMD, "Initializing pmd_pcap for %s\n", name);
950 gettimeofday(&start_time, NULL);
951 start_cycles = rte_get_timer_cycles();
952 hz = rte_get_timer_hz();
954 kvlist = rte_kvargs_parse(params, valid_arguments);
959 * If iface argument is passed we open the NICs and use them for
962 if (rte_kvargs_count(kvlist, ETH_PCAP_IFACE_ARG) == 1) {
964 ret = rte_kvargs_process(kvlist, ETH_PCAP_IFACE_ARG,
965 &open_rx_tx_iface, &pcaps);
970 dumpers.queue[0] = pcaps.queue[0];
973 pcaps.num_of_queue = 1;
974 dumpers.num_of_queue = 1;
980 * We check whether we want to open a RX stream from a real NIC or a
983 pcaps.num_of_queue = rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG);
984 if (pcaps.num_of_queue)
987 pcaps.num_of_queue = rte_kvargs_count(kvlist,
988 ETH_PCAP_RX_IFACE_ARG);
990 if (pcaps.num_of_queue > RTE_PMD_PCAP_MAX_QUEUES)
991 pcaps.num_of_queue = RTE_PMD_PCAP_MAX_QUEUES;
994 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_PCAP_ARG,
995 &open_rx_pcap, &pcaps);
997 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_IFACE_ARG,
998 &open_rx_iface, &pcaps);
1004 * We check whether we want to open a TX stream to a real NIC or a
1007 dumpers.num_of_queue = rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG);
1008 if (dumpers.num_of_queue)
1011 dumpers.num_of_queue = rte_kvargs_count(kvlist,
1012 ETH_PCAP_TX_IFACE_ARG);
1014 if (dumpers.num_of_queue > RTE_PMD_PCAP_MAX_QUEUES)
1015 dumpers.num_of_queue = RTE_PMD_PCAP_MAX_QUEUES;
1018 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_PCAP_ARG,
1019 &open_tx_pcap, &dumpers);
1021 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_IFACE_ARG,
1022 &open_tx_iface, &dumpers);
1028 ret = eth_from_pcaps(name, &pcaps, pcaps.num_of_queue, &dumpers,
1029 dumpers.num_of_queue, kvlist, single_iface, is_tx_pcap);
1032 rte_kvargs_free(kvlist);
1038 pmd_pcap_remove(const char *name)
1040 struct rte_eth_dev *eth_dev = NULL;
1042 RTE_LOG(INFO, PMD, "Closing pcap ethdev on numa socket %u\n",
1048 /* reserve an ethdev entry */
1049 eth_dev = rte_eth_dev_allocated(name);
1050 if (eth_dev == NULL)
1053 rte_free(eth_dev->data->dev_private);
1054 rte_free(eth_dev->data);
1056 rte_eth_dev_release_port(eth_dev);
1061 static struct rte_vdev_driver pmd_pcap_drv = {
1062 .probe = pmd_pcap_probe,
1063 .remove = pmd_pcap_remove,
1066 RTE_PMD_REGISTER_VDEV(net_pcap, pmd_pcap_drv);
1067 RTE_PMD_REGISTER_ALIAS(net_pcap, eth_pcap);
1068 RTE_PMD_REGISTER_PARAM_STRING(net_pcap,
1069 ETH_PCAP_RX_PCAP_ARG "=<string> "
1070 ETH_PCAP_TX_PCAP_ARG "=<string> "
1071 ETH_PCAP_RX_IFACE_ARG "=<ifc> "
1072 ETH_PCAP_TX_IFACE_ARG "=<ifc> "
1073 ETH_PCAP_IFACE_ARG "=<ifc>");