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_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) * 1e6 / 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);
298 tx_bytes += mbuf->pkt_len;
299 rte_pktmbuf_free(mbuf);
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) {
415 RTE_LOG(ERR, PMD, "Couldn't open %s for writing.\n",
425 open_single_rx_pcap(const char *pcap_filename, pcap_t **pcap)
427 *pcap = pcap_open_offline(pcap_filename, errbuf);
429 RTE_LOG(ERR, PMD, "Couldn't open %s: %s\n", pcap_filename,
438 eth_dev_start(struct rte_eth_dev *dev)
441 struct pmd_internals *internals = dev->data->dev_private;
442 struct pcap_tx_queue *tx;
443 struct pcap_rx_queue *rx;
445 /* Special iface case. Single pcap is open and shared between tx/rx. */
446 if (internals->single_iface) {
447 tx = &internals->tx_queue[0];
448 rx = &internals->rx_queue[0];
450 if (!tx->pcap && strcmp(tx->type, ETH_PCAP_IFACE_ARG) == 0) {
451 if (open_single_iface(tx->name, &tx->pcap) < 0)
458 /* If not open already, open tx pcaps/dumpers */
459 for (i = 0; i < dev->data->nb_tx_queues; i++) {
460 tx = &internals->tx_queue[i];
463 strcmp(tx->type, ETH_PCAP_TX_PCAP_ARG) == 0) {
464 if (open_single_tx_pcap(tx->name, &tx->dumper) < 0)
466 } else if (!tx->pcap &&
467 strcmp(tx->type, ETH_PCAP_TX_IFACE_ARG) == 0) {
468 if (open_single_iface(tx->name, &tx->pcap) < 0)
473 /* If not open already, open rx pcaps */
474 for (i = 0; i < dev->data->nb_rx_queues; i++) {
475 rx = &internals->rx_queue[i];
477 if (rx->pcap != NULL)
480 if (strcmp(rx->type, ETH_PCAP_RX_PCAP_ARG) == 0) {
481 if (open_single_rx_pcap(rx->name, &rx->pcap) < 0)
483 } else if (strcmp(rx->type, ETH_PCAP_RX_IFACE_ARG) == 0) {
484 if (open_single_iface(rx->name, &rx->pcap) < 0)
490 dev->data->dev_link.link_status = ETH_LINK_UP;
496 * This function gets called when the current port gets stopped.
497 * Is the only place for us to close all the tx streams dumpers.
498 * If not called the dumpers will be flushed within each tx burst.
501 eth_dev_stop(struct rte_eth_dev *dev)
504 struct pmd_internals *internals = dev->data->dev_private;
505 struct pcap_tx_queue *tx;
506 struct pcap_rx_queue *rx;
508 /* Special iface case. Single pcap is open and shared between tx/rx. */
509 if (internals->single_iface) {
510 tx = &internals->tx_queue[0];
511 rx = &internals->rx_queue[0];
512 pcap_close(tx->pcap);
518 for (i = 0; i < dev->data->nb_tx_queues; i++) {
519 tx = &internals->tx_queue[i];
521 if (tx->dumper != NULL) {
522 pcap_dump_close(tx->dumper);
526 if (tx->pcap != NULL) {
527 pcap_close(tx->pcap);
532 for (i = 0; i < dev->data->nb_rx_queues; i++) {
533 rx = &internals->rx_queue[i];
535 if (rx->pcap != NULL) {
536 pcap_close(rx->pcap);
542 dev->data->dev_link.link_status = ETH_LINK_DOWN;
546 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
552 eth_dev_info(struct rte_eth_dev *dev,
553 struct rte_eth_dev_info *dev_info)
555 struct pmd_internals *internals = dev->data->dev_private;
557 dev_info->driver_name = drivername;
558 dev_info->if_index = internals->if_index;
559 dev_info->max_mac_addrs = 1;
560 dev_info->max_rx_pktlen = (uint32_t) -1;
561 dev_info->max_rx_queues = dev->data->nb_rx_queues;
562 dev_info->max_tx_queues = dev->data->nb_tx_queues;
563 dev_info->min_rx_bufsize = 0;
564 dev_info->pci_dev = NULL;
568 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
571 unsigned long rx_packets_total = 0, rx_bytes_total = 0;
572 unsigned long tx_packets_total = 0, tx_bytes_total = 0;
573 unsigned long tx_packets_err_total = 0;
574 const struct pmd_internals *internal = dev->data->dev_private;
576 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
577 i < dev->data->nb_rx_queues; i++) {
578 stats->q_ipackets[i] = internal->rx_queue[i].rx_stat.pkts;
579 stats->q_ibytes[i] = internal->rx_queue[i].rx_stat.bytes;
580 rx_packets_total += stats->q_ipackets[i];
581 rx_bytes_total += stats->q_ibytes[i];
584 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
585 i < dev->data->nb_tx_queues; i++) {
586 stats->q_opackets[i] = internal->tx_queue[i].tx_stat.pkts;
587 stats->q_obytes[i] = internal->tx_queue[i].tx_stat.bytes;
588 stats->q_errors[i] = internal->tx_queue[i].tx_stat.err_pkts;
589 tx_packets_total += stats->q_opackets[i];
590 tx_bytes_total += stats->q_obytes[i];
591 tx_packets_err_total += stats->q_errors[i];
594 stats->ipackets = rx_packets_total;
595 stats->ibytes = rx_bytes_total;
596 stats->opackets = tx_packets_total;
597 stats->obytes = tx_bytes_total;
598 stats->oerrors = tx_packets_err_total;
602 eth_stats_reset(struct rte_eth_dev *dev)
605 struct pmd_internals *internal = dev->data->dev_private;
607 for (i = 0; i < dev->data->nb_rx_queues; i++) {
608 internal->rx_queue[i].rx_stat.pkts = 0;
609 internal->rx_queue[i].rx_stat.bytes = 0;
612 for (i = 0; i < dev->data->nb_tx_queues; i++) {
613 internal->tx_queue[i].tx_stat.pkts = 0;
614 internal->tx_queue[i].tx_stat.bytes = 0;
615 internal->tx_queue[i].tx_stat.err_pkts = 0;
620 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
625 eth_queue_release(void *q __rte_unused)
630 eth_link_update(struct rte_eth_dev *dev __rte_unused,
631 int wait_to_complete __rte_unused)
637 eth_rx_queue_setup(struct rte_eth_dev *dev,
638 uint16_t rx_queue_id,
639 uint16_t nb_rx_desc __rte_unused,
640 unsigned int socket_id __rte_unused,
641 const struct rte_eth_rxconf *rx_conf __rte_unused,
642 struct rte_mempool *mb_pool)
644 struct pmd_internals *internals = dev->data->dev_private;
645 struct pcap_rx_queue *pcap_q = &internals->rx_queue[rx_queue_id];
647 pcap_q->mb_pool = mb_pool;
648 dev->data->rx_queues[rx_queue_id] = pcap_q;
649 pcap_q->in_port = dev->data->port_id;
655 eth_tx_queue_setup(struct rte_eth_dev *dev,
656 uint16_t tx_queue_id,
657 uint16_t nb_tx_desc __rte_unused,
658 unsigned int socket_id __rte_unused,
659 const struct rte_eth_txconf *tx_conf __rte_unused)
661 struct pmd_internals *internals = dev->data->dev_private;
663 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
668 static const struct eth_dev_ops ops = {
669 .dev_start = eth_dev_start,
670 .dev_stop = eth_dev_stop,
671 .dev_close = eth_dev_close,
672 .dev_configure = eth_dev_configure,
673 .dev_infos_get = eth_dev_info,
674 .rx_queue_setup = eth_rx_queue_setup,
675 .tx_queue_setup = eth_tx_queue_setup,
676 .rx_queue_release = eth_queue_release,
677 .tx_queue_release = eth_queue_release,
678 .link_update = eth_link_update,
679 .stats_get = eth_stats_get,
680 .stats_reset = eth_stats_reset,
684 * Function handler that opens the pcap file for reading a stores a
685 * reference of it for use it later on.
688 open_rx_pcap(const char *key, const char *value, void *extra_args)
690 const char *pcap_filename = value;
691 struct pmd_devargs *rx = extra_args;
694 if (rx->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES)
696 if (open_single_rx_pcap(pcap_filename, &pcap) < 0)
699 rx->queue[rx->num_of_queue].pcap = pcap;
700 rx->queue[rx->num_of_queue].name = pcap_filename;
701 rx->queue[rx->num_of_queue].type = key;
708 * Opens a pcap file for writing and stores a reference to it
709 * for use it later on.
712 open_tx_pcap(const char *key, const char *value, void *extra_args)
714 const char *pcap_filename = value;
715 struct pmd_devargs *dumpers = extra_args;
716 pcap_dumper_t *dumper;
718 if (dumpers->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES)
720 if (open_single_tx_pcap(pcap_filename, &dumper) < 0)
723 dumpers->queue[dumpers->num_of_queue].dumper = dumper;
724 dumpers->queue[dumpers->num_of_queue].name = pcap_filename;
725 dumpers->queue[dumpers->num_of_queue].type = key;
726 dumpers->num_of_queue++;
732 * Opens an interface for reading and writing
735 open_rx_tx_iface(const char *key, const char *value, void *extra_args)
737 const char *iface = value;
738 struct pmd_devargs *tx = extra_args;
741 if (open_single_iface(iface, &pcap) < 0)
744 tx->queue[0].pcap = pcap;
745 tx->queue[0].name = iface;
746 tx->queue[0].type = key;
752 * Opens a NIC for reading packets from it
755 open_rx_iface(const char *key, const char *value, void *extra_args)
757 const char *iface = value;
758 struct pmd_devargs *rx = extra_args;
761 if (rx->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES)
763 if (open_single_iface(iface, &pcap) < 0)
765 rx->queue[rx->num_of_queue].pcap = pcap;
766 rx->queue[rx->num_of_queue].name = iface;
767 rx->queue[rx->num_of_queue].type = key;
774 * Opens a NIC for writing packets to it
777 open_tx_iface(const char *key, const char *value, void *extra_args)
779 const char *iface = value;
780 struct pmd_devargs *tx = extra_args;
783 if (tx->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES)
785 if (open_single_iface(iface, &pcap) < 0)
787 tx->queue[tx->num_of_queue].pcap = pcap;
788 tx->queue[tx->num_of_queue].name = iface;
789 tx->queue[tx->num_of_queue].type = key;
796 pmd_init_internals(const char *name, const unsigned int nb_rx_queues,
797 const unsigned int nb_tx_queues,
798 struct pmd_internals **internals,
799 struct rte_eth_dev **eth_dev)
801 struct rte_eth_dev_data *data = NULL;
802 unsigned int numa_node = rte_socket_id();
804 RTE_LOG(INFO, PMD, "Creating pcap-backed ethdev on numa socket %d\n",
807 /* now do all data allocation - for eth_dev structure
808 * and internal (private) data
810 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
814 *internals = rte_zmalloc_socket(name, sizeof(**internals), 0,
816 if (*internals == NULL)
819 /* reserve an ethdev entry */
820 *eth_dev = rte_eth_dev_allocate(name);
821 if (*eth_dev == NULL)
824 /* now put it all together
825 * - store queue data in internals,
826 * - store numa_node info in eth_dev
827 * - point eth_dev_data to internals
828 * - and point eth_dev structure to new eth_dev_data structure
830 data->dev_private = *internals;
831 data->port_id = (*eth_dev)->data->port_id;
832 snprintf(data->name, sizeof(data->name), "%s", (*eth_dev)->data->name);
833 data->nb_rx_queues = (uint16_t)nb_rx_queues;
834 data->nb_tx_queues = (uint16_t)nb_tx_queues;
835 data->dev_link = pmd_link;
836 data->mac_addrs = ð_addr;
839 * NOTE: we'll replace the data element, of originally allocated
840 * eth_dev so the rings are local per-process
842 (*eth_dev)->data = data;
843 (*eth_dev)->dev_ops = &ops;
844 (*eth_dev)->driver = NULL;
845 data->dev_flags = RTE_ETH_DEV_DETACHABLE;
846 data->kdrv = RTE_KDRV_NONE;
847 data->drv_name = drivername;
848 data->numa_node = numa_node;
854 rte_free(*internals);
860 eth_from_pcaps_common(const char *name, struct pmd_devargs *rx_queues,
861 const unsigned int nb_rx_queues, struct pmd_devargs *tx_queues,
862 const unsigned int nb_tx_queues, struct rte_kvargs *kvlist,
863 struct pmd_internals **internals, struct rte_eth_dev **eth_dev)
865 struct rte_kvargs_pair *pair = NULL;
869 /* do some parameter checking */
870 if (rx_queues == NULL && nb_rx_queues > 0)
872 if (tx_queues == NULL && nb_tx_queues > 0)
875 if (pmd_init_internals(name, nb_rx_queues, nb_tx_queues, internals,
879 for (i = 0; i < nb_rx_queues; i++) {
880 struct pcap_rx_queue *rx = &(*internals)->rx_queue[i];
881 struct devargs_queue *queue = &rx_queues->queue[i];
883 rx->pcap = queue->pcap;
884 snprintf(rx->name, sizeof(rx->name), "%s", queue->name);
885 snprintf(rx->type, sizeof(rx->type), "%s", queue->type);
888 for (i = 0; i < nb_tx_queues; i++) {
889 struct pcap_tx_queue *tx = &(*internals)->tx_queue[i];
890 struct devargs_queue *queue = &tx_queues->queue[i];
892 tx->dumper = queue->dumper;
893 tx->pcap = queue->pcap;
894 snprintf(tx->name, sizeof(tx->name), "%s", queue->name);
895 snprintf(tx->type, sizeof(tx->type), "%s", queue->type);
898 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
899 pair = &kvlist->pairs[k_idx];
900 if (strstr(pair->key, ETH_PCAP_IFACE_ARG) != NULL)
905 (*internals)->if_index = 0;
907 (*internals)->if_index = if_nametoindex(pair->value);
913 eth_from_pcaps(const char *name, struct pmd_devargs *rx_queues,
914 const unsigned int nb_rx_queues, struct pmd_devargs *tx_queues,
915 const unsigned int nb_tx_queues, struct rte_kvargs *kvlist,
916 int single_iface, unsigned int using_dumpers)
918 struct pmd_internals *internals = NULL;
919 struct rte_eth_dev *eth_dev = NULL;
922 ret = eth_from_pcaps_common(name, rx_queues, nb_rx_queues,
923 tx_queues, nb_tx_queues, kvlist, &internals, ð_dev);
928 /* store weather we are using a single interface for rx/tx or not */
929 internals->single_iface = single_iface;
931 eth_dev->rx_pkt_burst = eth_pcap_rx;
934 eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
936 eth_dev->tx_pkt_burst = eth_pcap_tx;
942 pmd_pcap_probe(const char *name, const char *params)
944 unsigned int is_rx_pcap = 0, is_tx_pcap = 0;
945 struct rte_kvargs *kvlist;
946 struct pmd_devargs pcaps = {0};
947 struct pmd_devargs dumpers = {0};
948 int single_iface = 0;
951 RTE_LOG(INFO, PMD, "Initializing pmd_pcap for %s\n", name);
953 gettimeofday(&start_time, NULL);
954 start_cycles = rte_get_timer_cycles();
955 hz = rte_get_timer_hz();
957 kvlist = rte_kvargs_parse(params, valid_arguments);
962 * If iface argument is passed we open the NICs and use them for
965 if (rte_kvargs_count(kvlist, ETH_PCAP_IFACE_ARG) == 1) {
967 ret = rte_kvargs_process(kvlist, ETH_PCAP_IFACE_ARG,
968 &open_rx_tx_iface, &pcaps);
973 dumpers.queue[0] = pcaps.queue[0];
976 pcaps.num_of_queue = 1;
977 dumpers.num_of_queue = 1;
983 * We check whether we want to open a RX stream from a real NIC or a
986 is_rx_pcap = rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG) ? 1 : 0;
987 pcaps.num_of_queue = 0;
990 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_PCAP_ARG,
991 &open_rx_pcap, &pcaps);
993 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_IFACE_ARG,
994 &open_rx_iface, &pcaps);
1000 * We check whether we want to open a TX stream to a real NIC or a
1003 is_tx_pcap = rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG) ? 1 : 0;
1004 dumpers.num_of_queue = 0;
1007 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_PCAP_ARG,
1008 &open_tx_pcap, &dumpers);
1010 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_IFACE_ARG,
1011 &open_tx_iface, &dumpers);
1017 ret = eth_from_pcaps(name, &pcaps, pcaps.num_of_queue, &dumpers,
1018 dumpers.num_of_queue, kvlist, single_iface, is_tx_pcap);
1021 rte_kvargs_free(kvlist);
1027 pmd_pcap_remove(const char *name)
1029 struct rte_eth_dev *eth_dev = NULL;
1031 RTE_LOG(INFO, PMD, "Closing pcap ethdev on numa socket %d\n",
1037 /* reserve an ethdev entry */
1038 eth_dev = rte_eth_dev_allocated(name);
1039 if (eth_dev == NULL)
1042 rte_free(eth_dev->data->dev_private);
1043 rte_free(eth_dev->data);
1045 rte_eth_dev_release_port(eth_dev);
1050 static struct rte_vdev_driver pmd_pcap_drv = {
1051 .probe = pmd_pcap_probe,
1052 .remove = pmd_pcap_remove,
1055 RTE_PMD_REGISTER_VDEV(net_pcap, pmd_pcap_drv);
1056 RTE_PMD_REGISTER_ALIAS(net_pcap, eth_pcap);
1057 RTE_PMD_REGISTER_PARAM_STRING(net_pcap,
1058 ETH_PCAP_RX_PCAP_ARG "=<string> "
1059 ETH_PCAP_TX_PCAP_ARG "=<string> "
1060 ETH_PCAP_RX_IFACE_ARG "=<ifc> "
1061 ETH_PCAP_TX_IFACE_ARG "=<ifc> "
1062 ETH_PCAP_IFACE_ARG "=<ifc>");