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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15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
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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.
41 #include <rte_cycles.h>
42 #include <rte_ethdev.h>
43 #include <rte_ethdev_vdev.h>
44 #include <rte_kvargs.h>
45 #include <rte_malloc.h>
47 #include <rte_bus_vdev.h>
49 #define RTE_ETH_PCAP_SNAPSHOT_LEN 65535
50 #define RTE_ETH_PCAP_SNAPLEN ETHER_MAX_JUMBO_FRAME_LEN
51 #define RTE_ETH_PCAP_PROMISC 1
52 #define RTE_ETH_PCAP_TIMEOUT -1
54 #define ETH_PCAP_RX_PCAP_ARG "rx_pcap"
55 #define ETH_PCAP_TX_PCAP_ARG "tx_pcap"
56 #define ETH_PCAP_RX_IFACE_ARG "rx_iface"
57 #define ETH_PCAP_TX_IFACE_ARG "tx_iface"
58 #define ETH_PCAP_IFACE_ARG "iface"
60 #define ETH_PCAP_ARG_MAXLEN 64
62 #define RTE_PMD_PCAP_MAX_QUEUES 16
64 static char errbuf[PCAP_ERRBUF_SIZE];
65 static unsigned char tx_pcap_data[RTE_ETH_PCAP_SNAPLEN];
66 static struct timeval start_time;
67 static uint64_t start_cycles;
71 volatile unsigned long pkts;
72 volatile unsigned long bytes;
73 volatile unsigned long err_pkts;
76 struct pcap_rx_queue {
79 struct rte_mempool *mb_pool;
80 struct queue_stat rx_stat;
82 char type[ETH_PCAP_ARG_MAXLEN];
85 struct pcap_tx_queue {
86 pcap_dumper_t *dumper;
88 struct queue_stat tx_stat;
90 char type[ETH_PCAP_ARG_MAXLEN];
93 struct pmd_internals {
94 struct pcap_rx_queue rx_queue[RTE_PMD_PCAP_MAX_QUEUES];
95 struct pcap_tx_queue tx_queue[RTE_PMD_PCAP_MAX_QUEUES];
101 unsigned int num_of_queue;
102 struct devargs_queue {
103 pcap_dumper_t *dumper;
107 } queue[RTE_PMD_PCAP_MAX_QUEUES];
110 static const char *valid_arguments[] = {
111 ETH_PCAP_RX_PCAP_ARG,
112 ETH_PCAP_TX_PCAP_ARG,
113 ETH_PCAP_RX_IFACE_ARG,
114 ETH_PCAP_TX_IFACE_ARG,
119 static struct ether_addr eth_addr = {
120 .addr_bytes = { 0, 0, 0, 0x1, 0x2, 0x3 }
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) * 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->if_index = internals->if_index;
558 dev_info->max_mac_addrs = 1;
559 dev_info->max_rx_pktlen = (uint32_t) -1;
560 dev_info->max_rx_queues = dev->data->nb_rx_queues;
561 dev_info->max_tx_queues = dev->data->nb_tx_queues;
562 dev_info->min_rx_bufsize = 0;
566 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
569 unsigned long rx_packets_total = 0, rx_bytes_total = 0;
570 unsigned long tx_packets_total = 0, tx_bytes_total = 0;
571 unsigned long tx_packets_err_total = 0;
572 const struct pmd_internals *internal = dev->data->dev_private;
574 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
575 i < dev->data->nb_rx_queues; i++) {
576 stats->q_ipackets[i] = internal->rx_queue[i].rx_stat.pkts;
577 stats->q_ibytes[i] = internal->rx_queue[i].rx_stat.bytes;
578 rx_packets_total += stats->q_ipackets[i];
579 rx_bytes_total += stats->q_ibytes[i];
582 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
583 i < dev->data->nb_tx_queues; i++) {
584 stats->q_opackets[i] = internal->tx_queue[i].tx_stat.pkts;
585 stats->q_obytes[i] = internal->tx_queue[i].tx_stat.bytes;
586 stats->q_errors[i] = internal->tx_queue[i].tx_stat.err_pkts;
587 tx_packets_total += stats->q_opackets[i];
588 tx_bytes_total += stats->q_obytes[i];
589 tx_packets_err_total += stats->q_errors[i];
592 stats->ipackets = rx_packets_total;
593 stats->ibytes = rx_bytes_total;
594 stats->opackets = tx_packets_total;
595 stats->obytes = tx_bytes_total;
596 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)
691 const char *pcap_filename = value;
692 struct pmd_devargs *rx = extra_args;
695 for (i = 0; i < rx->num_of_queue; i++) {
696 if (open_single_rx_pcap(pcap_filename, &pcap) < 0)
699 rx->queue[i].pcap = pcap;
700 rx->queue[i].name = pcap_filename;
701 rx->queue[i].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)
715 const char *pcap_filename = value;
716 struct pmd_devargs *dumpers = extra_args;
717 pcap_dumper_t *dumper;
719 for (i = 0; i < dumpers->num_of_queue; i++) {
720 if (open_single_tx_pcap(pcap_filename, &dumper) < 0)
723 dumpers->queue[i].dumper = dumper;
724 dumpers->queue[i].name = pcap_filename;
725 dumpers->queue[i].type = key;
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)
758 const char *iface = value;
759 struct pmd_devargs *rx = extra_args;
762 for (i = 0; i < rx->num_of_queue; i++) {
763 if (open_single_iface(iface, &pcap) < 0)
765 rx->queue[i].pcap = pcap;
766 rx->queue[i].name = iface;
767 rx->queue[i].type = key;
774 * Opens a NIC for writing packets to it
777 open_tx_iface(const char *key, const char *value, void *extra_args)
780 const char *iface = value;
781 struct pmd_devargs *tx = extra_args;
784 for (i = 0; i < tx->num_of_queue; i++) {
785 if (open_single_iface(iface, &pcap) < 0)
787 tx->queue[i].pcap = pcap;
788 tx->queue[i].name = iface;
789 tx->queue[i].type = key;
795 static struct rte_vdev_driver pmd_pcap_drv;
798 pmd_init_internals(struct rte_vdev_device *vdev,
799 const unsigned int nb_rx_queues,
800 const unsigned int nb_tx_queues,
801 struct pmd_internals **internals,
802 struct rte_eth_dev **eth_dev)
804 struct rte_eth_dev_data *data = NULL;
805 unsigned int numa_node = vdev->device.numa_node;
808 name = rte_vdev_device_name(vdev);
809 RTE_LOG(INFO, PMD, "Creating pcap-backed ethdev on numa socket %u\n",
812 /* now do all data allocation - for eth_dev structure
813 * and internal (private) data
815 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
819 /* reserve an ethdev entry */
820 *eth_dev = rte_eth_vdev_allocate(vdev, sizeof(**internals));
821 if (*eth_dev == NULL) {
826 /* now put it all together
827 * - store queue data in internals,
828 * - store numa_node info in eth_dev
829 * - point eth_dev_data to internals
830 * - and point eth_dev structure to new eth_dev_data structure
832 *internals = (*eth_dev)->data->dev_private;
833 rte_memcpy(data, (*eth_dev)->data, sizeof(*data));
834 data->nb_rx_queues = (uint16_t)nb_rx_queues;
835 data->nb_tx_queues = (uint16_t)nb_tx_queues;
836 data->dev_link = pmd_link;
837 data->mac_addrs = ð_addr;
840 * NOTE: we'll replace the data element, of originally allocated
841 * eth_dev so the rings are local per-process
843 (*eth_dev)->data = data;
844 (*eth_dev)->dev_ops = &ops;
850 eth_from_pcaps_common(struct rte_vdev_device *vdev,
851 struct pmd_devargs *rx_queues, const unsigned int nb_rx_queues,
852 struct pmd_devargs *tx_queues, const unsigned int nb_tx_queues,
853 struct rte_kvargs *kvlist, struct pmd_internals **internals,
854 struct rte_eth_dev **eth_dev)
856 struct rte_kvargs_pair *pair = NULL;
860 /* do some parameter checking */
861 if (rx_queues == NULL && nb_rx_queues > 0)
863 if (tx_queues == NULL && nb_tx_queues > 0)
866 if (pmd_init_internals(vdev, nb_rx_queues, nb_tx_queues, internals,
870 for (i = 0; i < nb_rx_queues; i++) {
871 struct pcap_rx_queue *rx = &(*internals)->rx_queue[i];
872 struct devargs_queue *queue = &rx_queues->queue[i];
874 rx->pcap = queue->pcap;
875 snprintf(rx->name, sizeof(rx->name), "%s", queue->name);
876 snprintf(rx->type, sizeof(rx->type), "%s", queue->type);
879 for (i = 0; i < nb_tx_queues; i++) {
880 struct pcap_tx_queue *tx = &(*internals)->tx_queue[i];
881 struct devargs_queue *queue = &tx_queues->queue[i];
883 tx->dumper = queue->dumper;
884 tx->pcap = queue->pcap;
885 snprintf(tx->name, sizeof(tx->name), "%s", queue->name);
886 snprintf(tx->type, sizeof(tx->type), "%s", queue->type);
889 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
890 pair = &kvlist->pairs[k_idx];
891 if (strstr(pair->key, ETH_PCAP_IFACE_ARG) != NULL)
896 (*internals)->if_index = 0;
898 (*internals)->if_index = if_nametoindex(pair->value);
904 eth_from_pcaps(struct rte_vdev_device *vdev,
905 struct pmd_devargs *rx_queues, const unsigned int nb_rx_queues,
906 struct pmd_devargs *tx_queues, const unsigned int nb_tx_queues,
907 struct rte_kvargs *kvlist, int single_iface,
908 unsigned int using_dumpers)
910 struct pmd_internals *internals = NULL;
911 struct rte_eth_dev *eth_dev = NULL;
914 ret = eth_from_pcaps_common(vdev, rx_queues, nb_rx_queues,
915 tx_queues, nb_tx_queues, kvlist, &internals, ð_dev);
920 /* store weather we are using a single interface for rx/tx or not */
921 internals->single_iface = single_iface;
923 eth_dev->rx_pkt_burst = eth_pcap_rx;
926 eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
928 eth_dev->tx_pkt_burst = eth_pcap_tx;
934 pmd_pcap_probe(struct rte_vdev_device *dev)
937 unsigned int is_rx_pcap = 0, is_tx_pcap = 0;
938 struct rte_kvargs *kvlist;
939 struct pmd_devargs pcaps = {0};
940 struct pmd_devargs dumpers = {0};
941 int single_iface = 0;
944 name = rte_vdev_device_name(dev);
945 RTE_LOG(INFO, PMD, "Initializing pmd_pcap for %s\n", name);
947 gettimeofday(&start_time, NULL);
948 start_cycles = rte_get_timer_cycles();
949 hz = rte_get_timer_hz();
951 kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_arguments);
956 * If iface argument is passed we open the NICs and use them for
959 if (rte_kvargs_count(kvlist, ETH_PCAP_IFACE_ARG) == 1) {
961 ret = rte_kvargs_process(kvlist, ETH_PCAP_IFACE_ARG,
962 &open_rx_tx_iface, &pcaps);
967 dumpers.queue[0] = pcaps.queue[0];
970 pcaps.num_of_queue = 1;
971 dumpers.num_of_queue = 1;
977 * We check whether we want to open a RX stream from a real NIC or a
980 pcaps.num_of_queue = rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG);
981 if (pcaps.num_of_queue)
984 pcaps.num_of_queue = rte_kvargs_count(kvlist,
985 ETH_PCAP_RX_IFACE_ARG);
987 if (pcaps.num_of_queue > RTE_PMD_PCAP_MAX_QUEUES)
988 pcaps.num_of_queue = RTE_PMD_PCAP_MAX_QUEUES;
991 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_PCAP_ARG,
992 &open_rx_pcap, &pcaps);
994 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_IFACE_ARG,
995 &open_rx_iface, &pcaps);
1001 * We check whether we want to open a TX stream to a real NIC or a
1004 dumpers.num_of_queue = rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG);
1005 if (dumpers.num_of_queue)
1008 dumpers.num_of_queue = rte_kvargs_count(kvlist,
1009 ETH_PCAP_TX_IFACE_ARG);
1011 if (dumpers.num_of_queue > RTE_PMD_PCAP_MAX_QUEUES)
1012 dumpers.num_of_queue = RTE_PMD_PCAP_MAX_QUEUES;
1015 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_PCAP_ARG,
1016 &open_tx_pcap, &dumpers);
1018 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_IFACE_ARG,
1019 &open_tx_iface, &dumpers);
1025 ret = eth_from_pcaps(dev, &pcaps, pcaps.num_of_queue, &dumpers,
1026 dumpers.num_of_queue, kvlist, single_iface, is_tx_pcap);
1029 rte_kvargs_free(kvlist);
1035 pmd_pcap_remove(struct rte_vdev_device *dev)
1037 struct rte_eth_dev *eth_dev = NULL;
1039 RTE_LOG(INFO, PMD, "Closing pcap ethdev on numa socket %u\n",
1045 /* reserve an ethdev entry */
1046 eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
1047 if (eth_dev == NULL)
1050 rte_free(eth_dev->data->dev_private);
1051 rte_free(eth_dev->data);
1053 rte_eth_dev_release_port(eth_dev);
1058 static struct rte_vdev_driver pmd_pcap_drv = {
1059 .probe = pmd_pcap_probe,
1060 .remove = pmd_pcap_remove,
1063 RTE_PMD_REGISTER_VDEV(net_pcap, pmd_pcap_drv);
1064 RTE_PMD_REGISTER_ALIAS(net_pcap, eth_pcap);
1065 RTE_PMD_REGISTER_PARAM_STRING(net_pcap,
1066 ETH_PCAP_RX_PCAP_ARG "=<string> "
1067 ETH_PCAP_TX_PCAP_ARG "=<string> "
1068 ETH_PCAP_RX_IFACE_ARG "=<ifc> "
1069 ETH_PCAP_TX_IFACE_ARG "=<ifc> "
1070 ETH_PCAP_IFACE_ARG "=<ifc>");