4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5 * Copyright(c) 2014 6WIND S.A.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
18 * * Neither the name of Intel Corporation nor the names of its
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
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 #include <rte_ethdev.h>
38 #include <rte_malloc.h>
39 #include <rte_memcpy.h>
40 #include <rte_string_fns.h>
41 #include <rte_cycles.h>
42 #include <rte_kvargs.h>
49 #define RTE_ETH_PCAP_SNAPSHOT_LEN 65535
50 #define RTE_ETH_PCAP_SNAPLEN 4096
51 #define RTE_ETH_PCAP_PROMISC 1
52 #define RTE_ETH_PCAP_TIMEOUT -1
53 #define ETH_PCAP_RX_PCAP_ARG "rx_pcap"
54 #define ETH_PCAP_TX_PCAP_ARG "tx_pcap"
55 #define ETH_PCAP_RX_IFACE_ARG "rx_iface"
56 #define ETH_PCAP_TX_IFACE_ARG "tx_iface"
57 #define ETH_PCAP_IFACE_ARG "iface"
59 #define ETH_PCAP_ARG_MAXLEN 64
61 static char errbuf[PCAP_ERRBUF_SIZE];
62 static struct timeval start_time;
63 static uint64_t start_cycles;
66 struct pcap_rx_queue {
69 struct rte_mempool *mb_pool;
70 volatile unsigned long rx_pkts;
71 volatile unsigned long err_pkts;
73 char type[ETH_PCAP_ARG_MAXLEN];
76 struct pcap_tx_queue {
77 pcap_dumper_t *dumper;
79 volatile unsigned long tx_pkts;
80 volatile unsigned long err_pkts;
82 char type[ETH_PCAP_ARG_MAXLEN];
87 pcap_t *pcaps[RTE_PMD_RING_MAX_RX_RINGS];
88 const char *names[RTE_PMD_RING_MAX_RX_RINGS];
89 const char *types[RTE_PMD_RING_MAX_RX_RINGS];
94 pcap_dumper_t *dumpers[RTE_PMD_RING_MAX_TX_RINGS];
95 pcap_t *pcaps[RTE_PMD_RING_MAX_RX_RINGS];
96 const char *names[RTE_PMD_RING_MAX_RX_RINGS];
97 const char *types[RTE_PMD_RING_MAX_RX_RINGS];
100 struct pmd_internals {
101 struct pcap_rx_queue rx_queue[RTE_PMD_RING_MAX_RX_RINGS];
102 struct pcap_tx_queue tx_queue[RTE_PMD_RING_MAX_TX_RINGS];
103 unsigned nb_rx_queues;
104 unsigned nb_tx_queues;
109 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 int open_single_tx_pcap(const char *pcap_filename, pcap_dumper_t **dumper);
119 static int open_single_rx_pcap(const char *pcap_filename, pcap_t **pcap);
120 static int open_single_iface(const char *iface, pcap_t **pcap);
122 static struct ether_addr eth_addr = { .addr_bytes = { 0, 0, 0, 0x1, 0x2, 0x3 } };
123 static const char *drivername = "Pcap PMD";
124 static struct rte_eth_link pmd_link = {
126 .link_duplex = ETH_LINK_FULL_DUPLEX,
132 eth_pcap_rx(void *queue,
133 struct rte_mbuf **bufs,
137 struct pcap_pkthdr header;
138 const u_char *packet;
139 struct rte_mbuf *mbuf;
140 struct pcap_rx_queue *pcap_q = queue;
144 if (unlikely(pcap_q->pcap == NULL || nb_pkts == 0))
147 /* Reads the given number of packets from the pcap file one by one
148 * and copies the packet data into a newly allocated mbuf to return.
150 for (i = 0; i < nb_pkts; i++) {
151 /* Get the next PCAP packet */
152 packet = pcap_next(pcap_q->pcap, &header);
153 if (unlikely(packet == NULL))
156 mbuf = rte_pktmbuf_alloc(pcap_q->mb_pool);
157 if (unlikely(mbuf == NULL))
160 /* Now get the space available for data in the mbuf */
161 buf_size = (uint16_t)(rte_pktmbuf_data_room_size(pcap_q->mb_pool) -
162 RTE_PKTMBUF_HEADROOM);
164 if (header.len <= buf_size) {
165 /* pcap packet will fit in the mbuf, go ahead and copy */
166 rte_memcpy(rte_pktmbuf_mtod(mbuf, void *), packet,
168 mbuf->data_len = (uint16_t)header.len;
169 mbuf->pkt_len = mbuf->data_len;
170 mbuf->port = pcap_q->in_port;
174 /* pcap packet will not fit in the mbuf, so drop packet */
176 "PCAP packet %d bytes will not fit in mbuf (%d bytes)\n",
177 header.len, buf_size);
178 rte_pktmbuf_free(mbuf);
181 pcap_q->rx_pkts += num_rx;
186 calculate_timestamp(struct timeval *ts) {
188 struct timeval cur_time;
190 cycles = rte_get_timer_cycles() - start_cycles;
191 cur_time.tv_sec = cycles / hz;
192 cur_time.tv_usec = (cycles % hz) * 10e6 / hz;
193 timeradd(&start_time, &cur_time, ts);
197 * Callback to handle writing packets to a pcap file.
200 eth_pcap_tx_dumper(void *queue,
201 struct rte_mbuf **bufs,
205 struct rte_mbuf *mbuf;
206 struct pcap_tx_queue *dumper_q = queue;
208 struct pcap_pkthdr header;
210 if (dumper_q->dumper == NULL || nb_pkts == 0)
213 /* writes the nb_pkts packets to the previously opened pcap file dumper */
214 for (i = 0; i < nb_pkts; i++) {
216 calculate_timestamp(&header.ts);
217 header.len = mbuf->data_len;
218 header.caplen = header.len;
219 pcap_dump((u_char *)dumper_q->dumper, &header,
220 rte_pktmbuf_mtod(mbuf, void*));
221 rte_pktmbuf_free(mbuf);
226 * Since there's no place to hook a callback when the forwarding
227 * process stops and to make sure the pcap file is actually written,
228 * we flush the pcap dumper within each burst.
230 pcap_dump_flush(dumper_q->dumper);
231 dumper_q->tx_pkts += num_tx;
232 dumper_q->err_pkts += nb_pkts - num_tx;
237 * Callback to handle sending packets through a real NIC.
240 eth_pcap_tx(void *queue,
241 struct rte_mbuf **bufs,
246 struct rte_mbuf *mbuf;
247 struct pcap_tx_queue *tx_queue = queue;
250 if (unlikely(nb_pkts == 0 || tx_queue->pcap == NULL))
253 for (i = 0; i < nb_pkts; i++) {
255 ret = pcap_sendpacket(tx_queue->pcap,
256 rte_pktmbuf_mtod(mbuf, u_char *),
258 if (unlikely(ret != 0))
261 rte_pktmbuf_free(mbuf);
264 tx_queue->tx_pkts += num_tx;
265 tx_queue->err_pkts += nb_pkts - num_tx;
270 eth_dev_start(struct rte_eth_dev *dev)
273 struct pmd_internals *internals = dev->data->dev_private;
274 struct pcap_tx_queue *tx;
275 struct pcap_rx_queue *rx;
277 /* Special iface case. Single pcap is open and shared between tx/rx. */
278 if (internals->single_iface) {
279 tx = &internals->tx_queue[0];
280 rx = &internals->rx_queue[0];
282 if (!tx->pcap && strcmp(tx->type, ETH_PCAP_IFACE_ARG) == 0) {
283 if (open_single_iface(tx->name, &tx->pcap) < 0)
290 /* If not open already, open tx pcaps/dumpers */
291 for (i = 0; i < internals->nb_tx_queues; i++) {
292 tx = &internals->tx_queue[i];
294 if (!tx->dumper && strcmp(tx->type, ETH_PCAP_TX_PCAP_ARG) == 0) {
295 if (open_single_tx_pcap(tx->name, &tx->dumper) < 0)
299 else if (!tx->pcap && strcmp(tx->type, ETH_PCAP_TX_IFACE_ARG) == 0) {
300 if (open_single_iface(tx->name, &tx->pcap) < 0)
305 /* If not open already, open rx pcaps */
306 for (i = 0; i < internals->nb_rx_queues; i++) {
307 rx = &internals->rx_queue[i];
309 if (rx->pcap != NULL)
312 if (strcmp(rx->type, ETH_PCAP_RX_PCAP_ARG) == 0) {
313 if (open_single_rx_pcap(rx->name, &rx->pcap) < 0)
317 else if (strcmp(rx->type, ETH_PCAP_RX_IFACE_ARG) == 0) {
318 if (open_single_iface(rx->name, &rx->pcap) < 0)
325 dev->data->dev_link.link_status = 1;
330 * This function gets called when the current port gets stopped.
331 * Is the only place for us to close all the tx streams dumpers.
332 * If not called the dumpers will be flushed within each tx burst.
335 eth_dev_stop(struct rte_eth_dev *dev)
338 struct pmd_internals *internals = dev->data->dev_private;
339 struct pcap_tx_queue *tx;
340 struct pcap_rx_queue *rx;
342 /* Special iface case. Single pcap is open and shared between tx/rx. */
343 if (internals->single_iface) {
344 tx = &internals->tx_queue[0];
345 rx = &internals->rx_queue[0];
346 pcap_close(tx->pcap);
352 for (i = 0; i < internals->nb_tx_queues; i++) {
353 tx = &internals->tx_queue[i];
355 if (tx->dumper != NULL) {
356 pcap_dump_close(tx->dumper);
360 if (tx->pcap != NULL) {
361 pcap_close(tx->pcap);
366 for (i = 0; i < internals->nb_rx_queues; i++) {
367 rx = &internals->rx_queue[i];
369 if (rx->pcap != NULL) {
370 pcap_close(rx->pcap);
376 dev->data->dev_link.link_status = 0;
380 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
386 eth_dev_info(struct rte_eth_dev *dev,
387 struct rte_eth_dev_info *dev_info)
389 struct pmd_internals *internals = dev->data->dev_private;
390 dev_info->driver_name = drivername;
391 dev_info->if_index = internals->if_index;
392 dev_info->max_mac_addrs = 1;
393 dev_info->max_rx_pktlen = (uint32_t) -1;
394 dev_info->max_rx_queues = (uint16_t)internals->nb_rx_queues;
395 dev_info->max_tx_queues = (uint16_t)internals->nb_tx_queues;
396 dev_info->min_rx_bufsize = 0;
397 dev_info->pci_dev = NULL;
401 eth_stats_get(struct rte_eth_dev *dev,
402 struct rte_eth_stats *igb_stats)
405 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
406 const struct pmd_internals *internal = dev->data->dev_private;
408 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && i < internal->nb_rx_queues;
410 igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
411 rx_total += igb_stats->q_ipackets[i];
414 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && i < internal->nb_tx_queues;
416 igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
417 igb_stats->q_errors[i] = internal->tx_queue[i].err_pkts;
418 tx_total += igb_stats->q_opackets[i];
419 tx_err_total += igb_stats->q_errors[i];
422 igb_stats->ipackets = rx_total;
423 igb_stats->opackets = tx_total;
424 igb_stats->oerrors = tx_err_total;
428 eth_stats_reset(struct rte_eth_dev *dev)
431 struct pmd_internals *internal = dev->data->dev_private;
432 for (i = 0; i < internal->nb_rx_queues; i++)
433 internal->rx_queue[i].rx_pkts = 0;
434 for (i = 0; i < internal->nb_tx_queues; i++) {
435 internal->tx_queue[i].tx_pkts = 0;
436 internal->tx_queue[i].err_pkts = 0;
441 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
446 eth_queue_release(void *q __rte_unused)
451 eth_link_update(struct rte_eth_dev *dev __rte_unused,
452 int wait_to_complete __rte_unused)
458 eth_rx_queue_setup(struct rte_eth_dev *dev,
459 uint16_t rx_queue_id,
460 uint16_t nb_rx_desc __rte_unused,
461 unsigned int socket_id __rte_unused,
462 const struct rte_eth_rxconf *rx_conf __rte_unused,
463 struct rte_mempool *mb_pool)
465 struct pmd_internals *internals = dev->data->dev_private;
466 struct pcap_rx_queue *pcap_q = &internals->rx_queue[rx_queue_id];
467 pcap_q->mb_pool = mb_pool;
468 dev->data->rx_queues[rx_queue_id] = pcap_q;
469 pcap_q->in_port = dev->data->port_id;
474 eth_tx_queue_setup(struct rte_eth_dev *dev,
475 uint16_t tx_queue_id,
476 uint16_t nb_tx_desc __rte_unused,
477 unsigned int socket_id __rte_unused,
478 const struct rte_eth_txconf *tx_conf __rte_unused)
481 struct pmd_internals *internals = dev->data->dev_private;
482 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
486 static const struct eth_dev_ops ops = {
487 .dev_start = eth_dev_start,
488 .dev_stop = eth_dev_stop,
489 .dev_close = eth_dev_close,
490 .dev_configure = eth_dev_configure,
491 .dev_infos_get = eth_dev_info,
492 .rx_queue_setup = eth_rx_queue_setup,
493 .tx_queue_setup = eth_tx_queue_setup,
494 .rx_queue_release = eth_queue_release,
495 .tx_queue_release = eth_queue_release,
496 .link_update = eth_link_update,
497 .stats_get = eth_stats_get,
498 .stats_reset = eth_stats_reset,
501 static struct eth_driver rte_pcap_pmd = {
503 .name = "rte_pcap_pmd",
504 .drv_flags = RTE_PCI_DRV_DETACHABLE,
509 * Function handler that opens the pcap file for reading a stores a
510 * reference of it for use it later on.
513 open_rx_pcap(const char *key, const char *value, void *extra_args)
516 const char *pcap_filename = value;
517 struct rx_pcaps *pcaps = extra_args;
520 for (i = 0; i < pcaps->num_of_rx; i++) {
521 if (open_single_rx_pcap(pcap_filename, &pcap) < 0)
524 pcaps->pcaps[i] = pcap;
525 pcaps->names[i] = pcap_filename;
526 pcaps->types[i] = key;
533 open_single_rx_pcap(const char *pcap_filename, pcap_t **pcap)
535 if ((*pcap = pcap_open_offline(pcap_filename, errbuf)) == NULL) {
536 RTE_LOG(ERR, PMD, "Couldn't open %s: %s\n", pcap_filename, errbuf);
543 * Opens a pcap file for writing and stores a reference to it
544 * for use it later on.
547 open_tx_pcap(const char *key, const char *value, void *extra_args)
550 const char *pcap_filename = value;
551 struct tx_pcaps *dumpers = extra_args;
552 pcap_dumper_t *dumper;
554 for (i = 0; i < dumpers->num_of_tx; i++) {
555 if (open_single_tx_pcap(pcap_filename, &dumper) < 0)
558 dumpers->dumpers[i] = dumper;
559 dumpers->names[i] = pcap_filename;
560 dumpers->types[i] = key;
567 open_single_tx_pcap(const char *pcap_filename, pcap_dumper_t **dumper)
571 * We need to create a dummy empty pcap_t to use it
572 * with pcap_dump_open(). We create big enough an Ethernet
576 if ((tx_pcap = pcap_open_dead(DLT_EN10MB, RTE_ETH_PCAP_SNAPSHOT_LEN))
578 RTE_LOG(ERR, PMD, "Couldn't create dead pcap\n");
582 /* The dumper is created using the previous pcap_t reference */
583 if ((*dumper = pcap_dump_open(tx_pcap, pcap_filename)) == NULL) {
584 RTE_LOG(ERR, PMD, "Couldn't open %s for writing.\n", pcap_filename);
592 * pcap_open_live wrapper function
595 open_iface_live(const char *iface, pcap_t **pcap) {
596 *pcap = pcap_open_live(iface, RTE_ETH_PCAP_SNAPLEN,
597 RTE_ETH_PCAP_PROMISC, RTE_ETH_PCAP_TIMEOUT, errbuf);
600 RTE_LOG(ERR, PMD, "Couldn't open %s: %s\n", iface, errbuf);
607 * Opens an interface for reading and writing
610 open_rx_tx_iface(const char *key, const char *value, void *extra_args)
612 const char *iface = value;
613 struct rx_pcaps *pcaps = extra_args;
616 if (open_single_iface(iface, &pcap) < 0)
619 pcaps->pcaps[0] = pcap;
620 pcaps->names[0] = iface;
621 pcaps->types[0] = key;
627 * Opens a NIC for reading packets from it
630 open_rx_iface(const char *key, const char *value, void *extra_args)
633 const char *iface = value;
634 struct rx_pcaps *pcaps = extra_args;
637 for (i = 0; i < pcaps->num_of_rx; i++) {
638 if (open_single_iface(iface, &pcap) < 0)
640 pcaps->pcaps[i] = pcap;
641 pcaps->names[i] = iface;
642 pcaps->types[i] = key;
649 * Opens a NIC for writing packets to it
652 open_tx_iface(const char *key, const char *value, void *extra_args)
655 const char *iface = value;
656 struct tx_pcaps *pcaps = extra_args;
659 for (i = 0; i < pcaps->num_of_tx; i++) {
660 if (open_single_iface(iface, &pcap) < 0)
662 pcaps->pcaps[i] = pcap;
663 pcaps->names[i] = iface;
664 pcaps->types[i] = key;
671 open_single_iface(const char *iface, pcap_t **pcap)
673 if (open_iface_live(iface, pcap) < 0) {
674 RTE_LOG(ERR, PMD, "Couldn't open interface %s\n", iface);
682 rte_pmd_init_internals(const char *name, const unsigned nb_rx_queues,
683 const unsigned nb_tx_queues,
684 const unsigned numa_node,
685 struct pmd_internals **internals,
686 struct rte_eth_dev **eth_dev,
687 struct rte_kvargs *kvlist)
689 struct rte_eth_dev_data *data = NULL;
690 struct rte_pci_device *pci_dev = NULL;
692 struct rte_kvargs_pair *pair = NULL;
694 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
695 pair = &kvlist->pairs[k_idx];
696 if (strstr(pair->key, ETH_PCAP_IFACE_ARG) != NULL)
701 "Creating pcap-backed ethdev on numa socket %u\n", numa_node);
703 /* now do all data allocation - for eth_dev structure, dummy pci driver
704 * and internal (private) data
706 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
710 pci_dev = rte_zmalloc_socket(name, sizeof(*pci_dev), 0, numa_node);
714 *internals = rte_zmalloc_socket(name, sizeof(**internals), 0, numa_node);
715 if (*internals == NULL)
718 /* reserve an ethdev entry */
719 *eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_VIRTUAL);
720 if (*eth_dev == NULL)
723 /* check length of device name */
724 if ((strlen((*eth_dev)->data->name) + 1) > sizeof(data->name))
727 /* now put it all together
728 * - store queue data in internals,
729 * - store numa_node info in pci_driver
730 * - point eth_dev_data to internals and pci_driver
731 * - and point eth_dev structure to new eth_dev_data structure
733 /* NOTE: we'll replace the data element, of originally allocated eth_dev
734 * so the rings are local per-process */
736 (*internals)->nb_rx_queues = nb_rx_queues;
737 (*internals)->nb_tx_queues = nb_tx_queues;
740 (*internals)->if_index = 0;
742 (*internals)->if_index = if_nametoindex(pair->value);
744 pci_dev->numa_node = numa_node;
746 data->dev_private = *internals;
747 data->port_id = (*eth_dev)->data->port_id;
748 snprintf(data->name, sizeof(data->name), "%s", (*eth_dev)->data->name);
749 data->nb_rx_queues = (uint16_t)nb_rx_queues;
750 data->nb_tx_queues = (uint16_t)nb_tx_queues;
751 data->dev_link = pmd_link;
752 data->mac_addrs = ð_addr;
754 (*eth_dev)->data->name, strlen((*eth_dev)->data->name));
756 (*eth_dev)->data = data;
757 (*eth_dev)->dev_ops = &ops;
758 (*eth_dev)->pci_dev = pci_dev;
759 (*eth_dev)->driver = &rte_pcap_pmd;
766 rte_free(*internals);
772 rte_eth_from_pcaps_n_dumpers(const char *name,
773 struct rx_pcaps *rx_queues,
774 const unsigned nb_rx_queues,
775 struct tx_pcaps *tx_queues,
776 const unsigned nb_tx_queues,
777 const unsigned numa_node,
778 struct rte_kvargs *kvlist)
780 struct pmd_internals *internals = NULL;
781 struct rte_eth_dev *eth_dev = NULL;
784 /* do some parameter checking */
785 if (rx_queues == NULL && nb_rx_queues > 0)
787 if (tx_queues == NULL && nb_tx_queues > 0)
790 if (rte_pmd_init_internals(name, nb_rx_queues, nb_tx_queues, numa_node,
791 &internals, ð_dev, kvlist) < 0)
794 for (i = 0; i < nb_rx_queues; i++) {
795 internals->rx_queue[i].pcap = rx_queues->pcaps[i];
796 snprintf(internals->rx_queue[i].name,
797 sizeof(internals->rx_queue[i].name), "%s",
798 rx_queues->names[i]);
799 snprintf(internals->rx_queue[i].type,
800 sizeof(internals->rx_queue[i].type), "%s",
801 rx_queues->types[i]);
803 for (i = 0; i < nb_tx_queues; i++) {
804 internals->tx_queue[i].dumper = tx_queues->dumpers[i];
805 snprintf(internals->tx_queue[i].name,
806 sizeof(internals->tx_queue[i].name), "%s",
807 tx_queues->names[i]);
808 snprintf(internals->tx_queue[i].type,
809 sizeof(internals->tx_queue[i].type), "%s",
810 tx_queues->types[i]);
813 /* using multiple pcaps/interfaces */
814 internals->single_iface = 0;
816 eth_dev->rx_pkt_burst = eth_pcap_rx;
817 eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
823 rte_eth_from_pcaps(const char *name,
824 struct rx_pcaps *rx_queues,
825 const unsigned nb_rx_queues,
826 struct tx_pcaps *tx_queues,
827 const unsigned nb_tx_queues,
828 const unsigned numa_node,
829 struct rte_kvargs *kvlist,
832 struct pmd_internals *internals = NULL;
833 struct rte_eth_dev *eth_dev = NULL;
836 /* do some parameter checking */
837 if (rx_queues == NULL && nb_rx_queues > 0)
839 if (tx_queues == NULL && nb_tx_queues > 0)
842 if (rte_pmd_init_internals(name, nb_rx_queues, nb_tx_queues, numa_node,
843 &internals, ð_dev, kvlist) < 0)
846 for (i = 0; i < nb_rx_queues; i++) {
847 internals->rx_queue[i].pcap = rx_queues->pcaps[i];
848 snprintf(internals->rx_queue[i].name,
849 sizeof(internals->rx_queue[i].name), "%s",
850 rx_queues->names[i]);
851 snprintf(internals->rx_queue[i].type,
852 sizeof(internals->rx_queue[i].type), "%s",
853 rx_queues->types[i]);
855 for (i = 0; i < nb_tx_queues; i++) {
856 internals->tx_queue[i].dumper = tx_queues->dumpers[i];
857 snprintf(internals->tx_queue[i].name,
858 sizeof(internals->tx_queue[i].name), "%s",
859 tx_queues->names[i]);
860 snprintf(internals->tx_queue[i].type,
861 sizeof(internals->tx_queue[i].type), "%s",
862 tx_queues->types[i]);
865 /* store wether we are using a single interface for rx/tx or not */
866 internals->single_iface = single_iface;
868 eth_dev->rx_pkt_burst = eth_pcap_rx;
869 eth_dev->tx_pkt_burst = eth_pcap_tx;
876 rte_pmd_pcap_devinit(const char *name, const char *params)
878 unsigned numa_node, using_dumpers = 0;
880 struct rte_kvargs *kvlist;
881 struct rx_pcaps pcaps;
882 struct tx_pcaps dumpers;
884 RTE_LOG(INFO, PMD, "Initializing pmd_pcap for %s\n", name);
886 numa_node = rte_socket_id();
888 gettimeofday(&start_time, NULL);
889 start_cycles = rte_get_timer_cycles();
890 hz = rte_get_timer_hz();
892 kvlist = rte_kvargs_parse(params, valid_arguments);
897 * If iface argument is passed we open the NICs and use them for
900 if (rte_kvargs_count(kvlist, ETH_PCAP_IFACE_ARG) == 1) {
902 ret = rte_kvargs_process(kvlist, ETH_PCAP_IFACE_ARG,
903 &open_rx_tx_iface, &pcaps);
906 dumpers.pcaps[0] = pcaps.pcaps[0];
907 dumpers.names[0] = pcaps.names[0];
908 dumpers.types[0] = pcaps.types[0];
909 ret = rte_eth_from_pcaps(name, &pcaps, 1, &dumpers, 1,
910 numa_node, kvlist, 1);
915 * We check whether we want to open a RX stream from a real NIC or a
918 if ((pcaps.num_of_rx = rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG))) {
919 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_PCAP_ARG,
920 &open_rx_pcap, &pcaps);
922 pcaps.num_of_rx = rte_kvargs_count(kvlist,
923 ETH_PCAP_RX_IFACE_ARG);
924 ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_IFACE_ARG,
925 &open_rx_iface, &pcaps);
932 * We check whether we want to open a TX stream to a real NIC or a
935 if ((dumpers.num_of_tx = rte_kvargs_count(kvlist,
936 ETH_PCAP_TX_PCAP_ARG))) {
937 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_PCAP_ARG,
938 &open_tx_pcap, &dumpers);
941 dumpers.num_of_tx = rte_kvargs_count(kvlist,
942 ETH_PCAP_TX_IFACE_ARG);
943 ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_IFACE_ARG,
944 &open_tx_iface, &dumpers);
951 ret = rte_eth_from_pcaps_n_dumpers(name, &pcaps, pcaps.num_of_rx,
952 &dumpers, dumpers.num_of_tx, numa_node, kvlist);
954 ret = rte_eth_from_pcaps(name, &pcaps, pcaps.num_of_rx, &dumpers,
955 dumpers.num_of_tx, numa_node, kvlist, 0);
958 rte_kvargs_free(kvlist);
963 rte_pmd_pcap_devuninit(const char *name)
965 struct rte_eth_dev *eth_dev = NULL;
967 RTE_LOG(INFO, PMD, "Closing pcap ethdev on numa socket %u\n",
973 /* reserve an ethdev entry */
974 eth_dev = rte_eth_dev_allocated(name);
978 rte_free(eth_dev->data->dev_private);
979 rte_free(eth_dev->data);
980 rte_free(eth_dev->pci_dev);
982 rte_eth_dev_release_port(eth_dev);
987 static struct rte_driver pmd_pcap_drv = {
990 .init = rte_pmd_pcap_devinit,
991 .uninit = rte_pmd_pcap_devuninit,
994 PMD_REGISTER_DRIVER(pmd_pcap_drv);