1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation.
3 * Copyright(c) 2014 6WIND S.A.
13 #include <rte_cycles.h>
14 #include <rte_ethdev_driver.h>
15 #include <rte_ethdev_vdev.h>
16 #include <rte_kvargs.h>
17 #include <rte_malloc.h>
19 #include <rte_bus_vdev.h>
21 #define RTE_ETH_PCAP_SNAPSHOT_LEN 65535
22 #define RTE_ETH_PCAP_SNAPLEN ETHER_MAX_JUMBO_FRAME_LEN
23 #define RTE_ETH_PCAP_PROMISC 1
24 #define RTE_ETH_PCAP_TIMEOUT -1
26 #define ETH_PCAP_RX_PCAP_ARG "rx_pcap"
27 #define ETH_PCAP_TX_PCAP_ARG "tx_pcap"
28 #define ETH_PCAP_RX_IFACE_ARG "rx_iface"
29 #define ETH_PCAP_RX_IFACE_IN_ARG "rx_iface_in"
30 #define ETH_PCAP_TX_IFACE_ARG "tx_iface"
31 #define ETH_PCAP_IFACE_ARG "iface"
33 #define ETH_PCAP_ARG_MAXLEN 64
35 #define RTE_PMD_PCAP_MAX_QUEUES 16
37 static char errbuf[PCAP_ERRBUF_SIZE];
38 static unsigned char tx_pcap_data[RTE_ETH_PCAP_SNAPLEN];
39 static struct timeval start_time;
40 static uint64_t start_cycles;
44 volatile unsigned long pkts;
45 volatile unsigned long bytes;
46 volatile unsigned long err_pkts;
49 struct pcap_rx_queue {
52 struct rte_mempool *mb_pool;
53 struct queue_stat rx_stat;
55 char type[ETH_PCAP_ARG_MAXLEN];
58 struct pcap_tx_queue {
59 pcap_dumper_t *dumper;
61 struct queue_stat tx_stat;
63 char type[ETH_PCAP_ARG_MAXLEN];
66 struct pmd_internals {
67 struct pcap_rx_queue rx_queue[RTE_PMD_PCAP_MAX_QUEUES];
68 struct pcap_tx_queue tx_queue[RTE_PMD_PCAP_MAX_QUEUES];
74 unsigned int num_of_queue;
75 struct devargs_queue {
76 pcap_dumper_t *dumper;
80 } queue[RTE_PMD_PCAP_MAX_QUEUES];
83 static const char *valid_arguments[] = {
86 ETH_PCAP_RX_IFACE_ARG,
87 ETH_PCAP_RX_IFACE_IN_ARG,
88 ETH_PCAP_TX_IFACE_ARG,
93 static struct ether_addr eth_addr = {
94 .addr_bytes = { 0, 0, 0, 0x1, 0x2, 0x3 }
97 static struct rte_eth_link pmd_link = {
98 .link_speed = ETH_SPEED_NUM_10G,
99 .link_duplex = ETH_LINK_FULL_DUPLEX,
100 .link_status = ETH_LINK_DOWN,
101 .link_autoneg = ETH_LINK_FIXED,
104 static int eth_pcap_logtype;
106 #define PMD_LOG(level, fmt, args...) \
107 rte_log(RTE_LOG_ ## level, eth_pcap_logtype, \
108 "%s(): " fmt "\n", __func__, ##args)
111 eth_pcap_rx_jumbo(struct rte_mempool *mb_pool, struct rte_mbuf *mbuf,
112 const u_char *data, uint16_t data_len)
114 /* Copy the first segment. */
115 uint16_t len = rte_pktmbuf_tailroom(mbuf);
116 struct rte_mbuf *m = mbuf;
118 rte_memcpy(rte_pktmbuf_append(mbuf, len), data, len);
122 while (data_len > 0) {
123 /* Allocate next mbuf and point to that. */
124 m->next = rte_pktmbuf_alloc(mb_pool);
126 if (unlikely(!m->next))
131 /* Headroom is not needed in chained mbufs. */
132 rte_pktmbuf_prepend(m, rte_pktmbuf_headroom(m));
136 /* Copy next segment. */
137 len = RTE_MIN(rte_pktmbuf_tailroom(m), data_len);
138 rte_memcpy(rte_pktmbuf_append(m, len), data, len);
145 return mbuf->nb_segs;
148 /* Copy data from mbuf chain to a buffer suitable for writing to a PCAP file. */
150 eth_pcap_gather_data(unsigned char *data, struct rte_mbuf *mbuf)
152 uint16_t data_len = 0;
155 rte_memcpy(data + data_len, rte_pktmbuf_mtod(mbuf, void *),
158 data_len += mbuf->data_len;
164 eth_pcap_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
167 struct pcap_pkthdr header;
168 const u_char *packet;
169 struct rte_mbuf *mbuf;
170 struct pcap_rx_queue *pcap_q = queue;
173 uint32_t rx_bytes = 0;
175 if (unlikely(pcap_q->pcap == NULL || nb_pkts == 0))
178 /* Reads the given number of packets from the pcap file one by one
179 * and copies the packet data into a newly allocated mbuf to return.
181 for (i = 0; i < nb_pkts; i++) {
182 /* Get the next PCAP packet */
183 packet = pcap_next(pcap_q->pcap, &header);
184 if (unlikely(packet == NULL))
187 mbuf = rte_pktmbuf_alloc(pcap_q->mb_pool);
188 if (unlikely(mbuf == NULL))
191 /* Now get the space available for data in the mbuf */
192 buf_size = rte_pktmbuf_data_room_size(pcap_q->mb_pool) -
193 RTE_PKTMBUF_HEADROOM;
195 if (header.caplen <= buf_size) {
196 /* pcap packet will fit in the mbuf, can copy it */
197 rte_memcpy(rte_pktmbuf_mtod(mbuf, void *), packet,
199 mbuf->data_len = (uint16_t)header.caplen;
201 /* Try read jumbo frame into multi mbufs. */
202 if (unlikely(eth_pcap_rx_jumbo(pcap_q->mb_pool,
205 header.caplen) == -1)) {
206 rte_pktmbuf_free(mbuf);
211 mbuf->pkt_len = (uint16_t)header.caplen;
212 mbuf->port = pcap_q->in_port;
215 rx_bytes += header.caplen;
217 pcap_q->rx_stat.pkts += num_rx;
218 pcap_q->rx_stat.bytes += rx_bytes;
224 calculate_timestamp(struct timeval *ts) {
226 struct timeval cur_time;
228 cycles = rte_get_timer_cycles() - start_cycles;
229 cur_time.tv_sec = cycles / hz;
230 cur_time.tv_usec = (cycles % hz) * 1e6 / hz;
231 timeradd(&start_time, &cur_time, ts);
235 * Callback to handle writing packets to a pcap file.
238 eth_pcap_tx_dumper(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
241 struct rte_mbuf *mbuf;
242 struct pcap_tx_queue *dumper_q = queue;
244 uint32_t tx_bytes = 0;
245 struct pcap_pkthdr header;
247 if (dumper_q->dumper == NULL || nb_pkts == 0)
250 /* writes the nb_pkts packets to the previously opened pcap file
252 for (i = 0; i < nb_pkts; i++) {
254 calculate_timestamp(&header.ts);
255 header.len = mbuf->pkt_len;
256 header.caplen = header.len;
258 if (likely(mbuf->nb_segs == 1)) {
259 pcap_dump((u_char *)dumper_q->dumper, &header,
260 rte_pktmbuf_mtod(mbuf, void*));
262 if (mbuf->pkt_len <= ETHER_MAX_JUMBO_FRAME_LEN) {
263 eth_pcap_gather_data(tx_pcap_data, mbuf);
264 pcap_dump((u_char *)dumper_q->dumper, &header,
268 "Dropping PCAP packet. Size (%d) > max jumbo size (%d).",
270 ETHER_MAX_JUMBO_FRAME_LEN);
272 rte_pktmbuf_free(mbuf);
278 tx_bytes += mbuf->pkt_len;
279 rte_pktmbuf_free(mbuf);
283 * Since there's no place to hook a callback when the forwarding
284 * process stops and to make sure the pcap file is actually written,
285 * we flush the pcap dumper within each burst.
287 pcap_dump_flush(dumper_q->dumper);
288 dumper_q->tx_stat.pkts += num_tx;
289 dumper_q->tx_stat.bytes += tx_bytes;
290 dumper_q->tx_stat.err_pkts += nb_pkts - num_tx;
296 * Callback to handle sending packets through a real NIC.
299 eth_pcap_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
303 struct rte_mbuf *mbuf;
304 struct pcap_tx_queue *tx_queue = queue;
306 uint32_t tx_bytes = 0;
308 if (unlikely(nb_pkts == 0 || tx_queue->pcap == NULL))
311 for (i = 0; i < nb_pkts; i++) {
314 if (likely(mbuf->nb_segs == 1)) {
315 ret = pcap_sendpacket(tx_queue->pcap,
316 rte_pktmbuf_mtod(mbuf, u_char *),
319 if (mbuf->pkt_len <= ETHER_MAX_JUMBO_FRAME_LEN) {
320 eth_pcap_gather_data(tx_pcap_data, mbuf);
321 ret = pcap_sendpacket(tx_queue->pcap,
322 tx_pcap_data, mbuf->pkt_len);
325 "Dropping PCAP packet. Size (%d) > max jumbo size (%d).",
327 ETHER_MAX_JUMBO_FRAME_LEN);
329 rte_pktmbuf_free(mbuf);
334 if (unlikely(ret != 0))
337 tx_bytes += mbuf->pkt_len;
338 rte_pktmbuf_free(mbuf);
341 tx_queue->tx_stat.pkts += num_tx;
342 tx_queue->tx_stat.bytes += tx_bytes;
343 tx_queue->tx_stat.err_pkts += nb_pkts - num_tx;
349 * pcap_open_live wrapper function
352 open_iface_live(const char *iface, pcap_t **pcap) {
353 *pcap = pcap_open_live(iface, RTE_ETH_PCAP_SNAPLEN,
354 RTE_ETH_PCAP_PROMISC, RTE_ETH_PCAP_TIMEOUT, errbuf);
357 PMD_LOG(ERR, "Couldn't open %s: %s", iface, errbuf);
365 open_single_iface(const char *iface, pcap_t **pcap)
367 if (open_iface_live(iface, pcap) < 0) {
368 PMD_LOG(ERR, "Couldn't open interface %s", iface);
376 open_single_tx_pcap(const char *pcap_filename, pcap_dumper_t **dumper)
381 * We need to create a dummy empty pcap_t to use it
382 * with pcap_dump_open(). We create big enough an Ethernet
385 tx_pcap = pcap_open_dead(DLT_EN10MB, RTE_ETH_PCAP_SNAPSHOT_LEN);
386 if (tx_pcap == NULL) {
387 PMD_LOG(ERR, "Couldn't create dead pcap");
391 /* The dumper is created using the previous pcap_t reference */
392 *dumper = pcap_dump_open(tx_pcap, pcap_filename);
393 if (*dumper == NULL) {
395 PMD_LOG(ERR, "Couldn't open %s for writing.",
405 open_single_rx_pcap(const char *pcap_filename, pcap_t **pcap)
407 *pcap = pcap_open_offline(pcap_filename, errbuf);
409 PMD_LOG(ERR, "Couldn't open %s: %s", pcap_filename,
418 eth_dev_start(struct rte_eth_dev *dev)
421 struct pmd_internals *internals = dev->data->dev_private;
422 struct pcap_tx_queue *tx;
423 struct pcap_rx_queue *rx;
425 /* Special iface case. Single pcap is open and shared between tx/rx. */
426 if (internals->single_iface) {
427 tx = &internals->tx_queue[0];
428 rx = &internals->rx_queue[0];
430 if (!tx->pcap && strcmp(tx->type, ETH_PCAP_IFACE_ARG) == 0) {
431 if (open_single_iface(tx->name, &tx->pcap) < 0)
439 /* If not open already, open tx pcaps/dumpers */
440 for (i = 0; i < dev->data->nb_tx_queues; i++) {
441 tx = &internals->tx_queue[i];
444 strcmp(tx->type, ETH_PCAP_TX_PCAP_ARG) == 0) {
445 if (open_single_tx_pcap(tx->name, &tx->dumper) < 0)
447 } else if (!tx->pcap &&
448 strcmp(tx->type, ETH_PCAP_TX_IFACE_ARG) == 0) {
449 if (open_single_iface(tx->name, &tx->pcap) < 0)
454 /* If not open already, open rx pcaps */
455 for (i = 0; i < dev->data->nb_rx_queues; i++) {
456 rx = &internals->rx_queue[i];
458 if (rx->pcap != NULL)
461 if (strcmp(rx->type, ETH_PCAP_RX_PCAP_ARG) == 0) {
462 if (open_single_rx_pcap(rx->name, &rx->pcap) < 0)
464 } else if (strcmp(rx->type, ETH_PCAP_RX_IFACE_ARG) == 0) {
465 if (open_single_iface(rx->name, &rx->pcap) < 0)
471 for (i = 0; i < dev->data->nb_rx_queues; i++)
472 dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;
474 for (i = 0; i < dev->data->nb_tx_queues; i++)
475 dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;
477 dev->data->dev_link.link_status = ETH_LINK_UP;
483 * This function gets called when the current port gets stopped.
484 * Is the only place for us to close all the tx streams dumpers.
485 * If not called the dumpers will be flushed within each tx burst.
488 eth_dev_stop(struct rte_eth_dev *dev)
491 struct pmd_internals *internals = dev->data->dev_private;
492 struct pcap_tx_queue *tx;
493 struct pcap_rx_queue *rx;
495 /* Special iface case. Single pcap is open and shared between tx/rx. */
496 if (internals->single_iface) {
497 tx = &internals->tx_queue[0];
498 rx = &internals->rx_queue[0];
499 pcap_close(tx->pcap);
505 for (i = 0; i < dev->data->nb_tx_queues; i++) {
506 tx = &internals->tx_queue[i];
508 if (tx->dumper != NULL) {
509 pcap_dump_close(tx->dumper);
513 if (tx->pcap != NULL) {
514 pcap_close(tx->pcap);
519 for (i = 0; i < dev->data->nb_rx_queues; i++) {
520 rx = &internals->rx_queue[i];
522 if (rx->pcap != NULL) {
523 pcap_close(rx->pcap);
529 for (i = 0; i < dev->data->nb_rx_queues; i++)
530 dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
532 for (i = 0; i < dev->data->nb_tx_queues; i++)
533 dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
535 dev->data->dev_link.link_status = ETH_LINK_DOWN;
539 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
545 eth_dev_info(struct rte_eth_dev *dev,
546 struct rte_eth_dev_info *dev_info)
548 struct pmd_internals *internals = dev->data->dev_private;
550 dev_info->if_index = internals->if_index;
551 dev_info->max_mac_addrs = 1;
552 dev_info->max_rx_pktlen = (uint32_t) -1;
553 dev_info->max_rx_queues = dev->data->nb_rx_queues;
554 dev_info->max_tx_queues = dev->data->nb_tx_queues;
555 dev_info->min_rx_bufsize = 0;
559 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
562 unsigned long rx_packets_total = 0, rx_bytes_total = 0;
563 unsigned long tx_packets_total = 0, tx_bytes_total = 0;
564 unsigned long tx_packets_err_total = 0;
565 const struct pmd_internals *internal = dev->data->dev_private;
567 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
568 i < dev->data->nb_rx_queues; i++) {
569 stats->q_ipackets[i] = internal->rx_queue[i].rx_stat.pkts;
570 stats->q_ibytes[i] = internal->rx_queue[i].rx_stat.bytes;
571 rx_packets_total += stats->q_ipackets[i];
572 rx_bytes_total += stats->q_ibytes[i];
575 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
576 i < dev->data->nb_tx_queues; i++) {
577 stats->q_opackets[i] = internal->tx_queue[i].tx_stat.pkts;
578 stats->q_obytes[i] = internal->tx_queue[i].tx_stat.bytes;
579 stats->q_errors[i] = internal->tx_queue[i].tx_stat.err_pkts;
580 tx_packets_total += stats->q_opackets[i];
581 tx_bytes_total += stats->q_obytes[i];
582 tx_packets_err_total += stats->q_errors[i];
585 stats->ipackets = rx_packets_total;
586 stats->ibytes = rx_bytes_total;
587 stats->opackets = tx_packets_total;
588 stats->obytes = tx_bytes_total;
589 stats->oerrors = tx_packets_err_total;
595 eth_stats_reset(struct rte_eth_dev *dev)
598 struct pmd_internals *internal = dev->data->dev_private;
600 for (i = 0; i < dev->data->nb_rx_queues; i++) {
601 internal->rx_queue[i].rx_stat.pkts = 0;
602 internal->rx_queue[i].rx_stat.bytes = 0;
605 for (i = 0; i < dev->data->nb_tx_queues; i++) {
606 internal->tx_queue[i].tx_stat.pkts = 0;
607 internal->tx_queue[i].tx_stat.bytes = 0;
608 internal->tx_queue[i].tx_stat.err_pkts = 0;
613 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
618 eth_queue_release(void *q __rte_unused)
623 eth_link_update(struct rte_eth_dev *dev __rte_unused,
624 int wait_to_complete __rte_unused)
630 eth_rx_queue_setup(struct rte_eth_dev *dev,
631 uint16_t rx_queue_id,
632 uint16_t nb_rx_desc __rte_unused,
633 unsigned int socket_id __rte_unused,
634 const struct rte_eth_rxconf *rx_conf __rte_unused,
635 struct rte_mempool *mb_pool)
637 struct pmd_internals *internals = dev->data->dev_private;
638 struct pcap_rx_queue *pcap_q = &internals->rx_queue[rx_queue_id];
640 pcap_q->mb_pool = mb_pool;
641 dev->data->rx_queues[rx_queue_id] = pcap_q;
642 pcap_q->in_port = dev->data->port_id;
648 eth_tx_queue_setup(struct rte_eth_dev *dev,
649 uint16_t tx_queue_id,
650 uint16_t nb_tx_desc __rte_unused,
651 unsigned int socket_id __rte_unused,
652 const struct rte_eth_txconf *tx_conf __rte_unused)
654 struct pmd_internals *internals = dev->data->dev_private;
656 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
662 eth_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
664 dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
670 eth_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
672 dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
678 eth_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
680 dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
686 eth_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
688 dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
693 static const struct eth_dev_ops ops = {
694 .dev_start = eth_dev_start,
695 .dev_stop = eth_dev_stop,
696 .dev_close = eth_dev_close,
697 .dev_configure = eth_dev_configure,
698 .dev_infos_get = eth_dev_info,
699 .rx_queue_setup = eth_rx_queue_setup,
700 .tx_queue_setup = eth_tx_queue_setup,
701 .rx_queue_start = eth_rx_queue_start,
702 .tx_queue_start = eth_tx_queue_start,
703 .rx_queue_stop = eth_rx_queue_stop,
704 .tx_queue_stop = eth_tx_queue_stop,
705 .rx_queue_release = eth_queue_release,
706 .tx_queue_release = eth_queue_release,
707 .link_update = eth_link_update,
708 .stats_get = eth_stats_get,
709 .stats_reset = eth_stats_reset,
713 add_queue(struct pmd_devargs *pmd, const char *name, const char *type,
714 pcap_t *pcap, pcap_dumper_t *dumper)
716 if (pmd->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES)
719 pmd->queue[pmd->num_of_queue].pcap = pcap;
721 pmd->queue[pmd->num_of_queue].dumper = dumper;
722 pmd->queue[pmd->num_of_queue].name = name;
723 pmd->queue[pmd->num_of_queue].type = type;
729 * Function handler that opens the pcap file for reading a stores a
730 * reference of it for use it later on.
733 open_rx_pcap(const char *key, const char *value, void *extra_args)
735 const char *pcap_filename = value;
736 struct pmd_devargs *rx = extra_args;
739 if (open_single_rx_pcap(pcap_filename, &pcap) < 0)
742 if (add_queue(rx, pcap_filename, key, pcap, NULL) < 0) {
751 * Opens a pcap file for writing and stores a reference to it
752 * for use it later on.
755 open_tx_pcap(const char *key, const char *value, void *extra_args)
757 const char *pcap_filename = value;
758 struct pmd_devargs *dumpers = extra_args;
759 pcap_dumper_t *dumper;
761 if (open_single_tx_pcap(pcap_filename, &dumper) < 0)
764 if (add_queue(dumpers, pcap_filename, key, NULL, dumper) < 0) {
765 pcap_dump_close(dumper);
773 * Opens an interface for reading and writing
776 open_rx_tx_iface(const char *key, const char *value, void *extra_args)
778 const char *iface = value;
779 struct pmd_devargs *tx = extra_args;
782 if (open_single_iface(iface, &pcap) < 0)
785 tx->queue[0].pcap = pcap;
786 tx->queue[0].name = iface;
787 tx->queue[0].type = key;
793 set_iface_direction(const char *iface, pcap_t *pcap,
794 pcap_direction_t direction)
796 const char *direction_str = (direction == PCAP_D_IN) ? "IN" : "OUT";
797 if (pcap_setdirection(pcap, direction) < 0) {
798 PMD_LOG(ERR, "Setting %s pcap direction %s failed - %s\n",
799 iface, direction_str, pcap_geterr(pcap));
802 PMD_LOG(INFO, "Setting %s pcap direction %s\n",
803 iface, direction_str);
808 open_iface(const char *key, const char *value, void *extra_args)
810 const char *iface = value;
811 struct pmd_devargs *pmd = extra_args;
814 if (open_single_iface(iface, &pcap) < 0)
816 if (add_queue(pmd, iface, key, pcap, NULL) < 0) {
825 * Opens a NIC for reading packets from it
828 open_rx_iface(const char *key, const char *value, void *extra_args)
830 int ret = open_iface(key, value, extra_args);
833 if (strcmp(key, ETH_PCAP_RX_IFACE_IN_ARG) == 0) {
834 struct pmd_devargs *pmd = extra_args;
835 unsigned int qid = pmd->num_of_queue - 1;
837 set_iface_direction(pmd->queue[qid].name,
838 pmd->queue[qid].pcap,
846 rx_iface_args_process(const char *key, const char *value, void *extra_args)
848 if (strcmp(key, ETH_PCAP_RX_IFACE_ARG) == 0 ||
849 strcmp(key, ETH_PCAP_RX_IFACE_IN_ARG) == 0)
850 return open_rx_iface(key, value, extra_args);
856 * Opens a NIC for writing packets to it
859 open_tx_iface(const char *key, const char *value, void *extra_args)
861 return open_iface(key, value, extra_args);
864 static struct rte_vdev_driver pmd_pcap_drv;
867 pmd_init_internals(struct rte_vdev_device *vdev,
868 const unsigned int nb_rx_queues,
869 const unsigned int nb_tx_queues,
870 struct pmd_internals **internals,
871 struct rte_eth_dev **eth_dev)
873 struct rte_eth_dev_data *data;
874 unsigned int numa_node = vdev->device.numa_node;
876 PMD_LOG(INFO, "Creating pcap-backed ethdev on numa socket %d",
879 /* reserve an ethdev entry */
880 *eth_dev = rte_eth_vdev_allocate(vdev, sizeof(**internals));
884 /* now put it all together
885 * - store queue data in internals,
886 * - store numa_node info in eth_dev
887 * - point eth_dev_data to internals
888 * - and point eth_dev structure to new eth_dev_data structure
890 *internals = (*eth_dev)->data->dev_private;
891 data = (*eth_dev)->data;
892 data->nb_rx_queues = (uint16_t)nb_rx_queues;
893 data->nb_tx_queues = (uint16_t)nb_tx_queues;
894 data->dev_link = pmd_link;
895 data->mac_addrs = ð_addr;
898 * NOTE: we'll replace the data element, of originally allocated
899 * eth_dev so the rings are local per-process
901 (*eth_dev)->dev_ops = &ops;
907 eth_from_pcaps_common(struct rte_vdev_device *vdev,
908 struct pmd_devargs *rx_queues, const unsigned int nb_rx_queues,
909 struct pmd_devargs *tx_queues, const unsigned int nb_tx_queues,
910 struct rte_kvargs *kvlist, struct pmd_internals **internals,
911 struct rte_eth_dev **eth_dev)
913 struct rte_kvargs_pair *pair = NULL;
917 /* do some parameter checking */
918 if (rx_queues == NULL && nb_rx_queues > 0)
920 if (tx_queues == NULL && nb_tx_queues > 0)
923 if (pmd_init_internals(vdev, nb_rx_queues, nb_tx_queues, internals,
927 for (i = 0; i < nb_rx_queues; i++) {
928 struct pcap_rx_queue *rx = &(*internals)->rx_queue[i];
929 struct devargs_queue *queue = &rx_queues->queue[i];
931 rx->pcap = queue->pcap;
932 snprintf(rx->name, sizeof(rx->name), "%s", queue->name);
933 snprintf(rx->type, sizeof(rx->type), "%s", queue->type);
936 for (i = 0; i < nb_tx_queues; i++) {
937 struct pcap_tx_queue *tx = &(*internals)->tx_queue[i];
938 struct devargs_queue *queue = &tx_queues->queue[i];
940 tx->dumper = queue->dumper;
941 tx->pcap = queue->pcap;
942 snprintf(tx->name, sizeof(tx->name), "%s", queue->name);
943 snprintf(tx->type, sizeof(tx->type), "%s", queue->type);
946 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
947 pair = &kvlist->pairs[k_idx];
948 if (strstr(pair->key, ETH_PCAP_IFACE_ARG) != NULL)
953 (*internals)->if_index = 0;
955 (*internals)->if_index = if_nametoindex(pair->value);
961 eth_from_pcaps(struct rte_vdev_device *vdev,
962 struct pmd_devargs *rx_queues, const unsigned int nb_rx_queues,
963 struct pmd_devargs *tx_queues, const unsigned int nb_tx_queues,
964 struct rte_kvargs *kvlist, int single_iface,
965 unsigned int using_dumpers)
967 struct pmd_internals *internals = NULL;
968 struct rte_eth_dev *eth_dev = NULL;
971 ret = eth_from_pcaps_common(vdev, rx_queues, nb_rx_queues,
972 tx_queues, nb_tx_queues, kvlist, &internals, ð_dev);
977 /* store weather we are using a single interface for rx/tx or not */
978 internals->single_iface = single_iface;
980 eth_dev->rx_pkt_burst = eth_pcap_rx;
983 eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
985 eth_dev->tx_pkt_burst = eth_pcap_tx;
987 rte_eth_dev_probing_finish(eth_dev);
992 pmd_pcap_probe(struct rte_vdev_device *dev)
995 unsigned int is_rx_pcap = 0, is_tx_pcap = 0;
996 struct rte_kvargs *kvlist;
997 struct pmd_devargs pcaps = {0};
998 struct pmd_devargs dumpers = {0};
999 struct rte_eth_dev *eth_dev;
1000 int single_iface = 0;
1003 name = rte_vdev_device_name(dev);
1004 PMD_LOG(INFO, "Initializing pmd_pcap for %s", name);
1006 gettimeofday(&start_time, NULL);
1007 start_cycles = rte_get_timer_cycles();
1008 hz = rte_get_timer_hz();
1010 if (rte_eal_process_type() == RTE_PROC_SECONDARY &&
1011 strlen(rte_vdev_device_args(dev)) == 0) {
1012 eth_dev = rte_eth_dev_attach_secondary(name);
1014 PMD_LOG(ERR, "Failed to probe %s", name);
1017 /* TODO: request info from primary to set up Rx and Tx */
1018 eth_dev->dev_ops = &ops;
1019 eth_dev->device = &dev->device;
1020 rte_eth_dev_probing_finish(eth_dev);
1024 kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_arguments);
1029 * If iface argument is passed we open the NICs and use them for
1032 if (rte_kvargs_count(kvlist, ETH_PCAP_IFACE_ARG) == 1) {
1034 ret = rte_kvargs_process(kvlist, ETH_PCAP_IFACE_ARG,
1035 &open_rx_tx_iface, &pcaps);
1040 dumpers.queue[0] = pcaps.queue[0];
1043 pcaps.num_of_queue = 1;
1044 dumpers.num_of_queue = 1;
1050 * We check whether we want to open a RX stream from a real NIC or a
1053 is_rx_pcap = rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG) ? 1 : 0;
1054 pcaps.num_of_queue = 0;
1057 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_PCAP_ARG,
1058 &open_rx_pcap, &pcaps);
1060 ret = rte_kvargs_process(kvlist, NULL,
1061 &rx_iface_args_process, &pcaps);
1068 * We check whether we want to open a TX stream to a real NIC or a
1071 is_tx_pcap = rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG) ? 1 : 0;
1072 dumpers.num_of_queue = 0;
1075 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_PCAP_ARG,
1076 &open_tx_pcap, &dumpers);
1078 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_IFACE_ARG,
1079 &open_tx_iface, &dumpers);
1085 ret = eth_from_pcaps(dev, &pcaps, pcaps.num_of_queue, &dumpers,
1086 dumpers.num_of_queue, kvlist, single_iface, is_tx_pcap);
1089 rte_kvargs_free(kvlist);
1095 pmd_pcap_remove(struct rte_vdev_device *dev)
1097 struct rte_eth_dev *eth_dev = NULL;
1099 PMD_LOG(INFO, "Closing pcap ethdev on numa socket %d",
1105 /* reserve an ethdev entry */
1106 eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
1107 if (eth_dev == NULL)
1110 rte_free(eth_dev->data->dev_private);
1112 rte_eth_dev_release_port(eth_dev);
1117 static struct rte_vdev_driver pmd_pcap_drv = {
1118 .probe = pmd_pcap_probe,
1119 .remove = pmd_pcap_remove,
1122 RTE_PMD_REGISTER_VDEV(net_pcap, pmd_pcap_drv);
1123 RTE_PMD_REGISTER_ALIAS(net_pcap, eth_pcap);
1124 RTE_PMD_REGISTER_PARAM_STRING(net_pcap,
1125 ETH_PCAP_RX_PCAP_ARG "=<string> "
1126 ETH_PCAP_TX_PCAP_ARG "=<string> "
1127 ETH_PCAP_RX_IFACE_ARG "=<ifc> "
1128 ETH_PCAP_RX_IFACE_IN_ARG "=<ifc> "
1129 ETH_PCAP_TX_IFACE_ARG "=<ifc> "
1130 ETH_PCAP_IFACE_ARG "=<ifc>");
1132 RTE_INIT(eth_pcap_init_log)
1134 eth_pcap_logtype = rte_log_register("pmd.net.pcap");
1135 if (eth_pcap_logtype >= 0)
1136 rte_log_set_level(eth_pcap_logtype, RTE_LOG_NOTICE);