4 * Copyright(c) 2014 John W. Linville <linville@tuxdriver.com>
6 * Originally based upon librte_pmd_pcap code:
8 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2014 6WIND S.A.
10 * All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * * Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * * Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in
20 * the documentation and/or other materials provided with the
22 * * Neither the name of Intel Corporation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 #include <rte_ethdev.h>
41 #include <rte_malloc.h>
42 #include <rte_kvargs.h>
45 #include <linux/if_ether.h>
46 #include <linux/if_packet.h>
47 #include <arpa/inet.h>
49 #include <sys/types.h>
50 #include <sys/socket.h>
51 #include <sys/ioctl.h>
56 #include "rte_eth_af_packet.h"
58 #define ETH_AF_PACKET_IFACE_ARG "iface"
59 #define ETH_AF_PACKET_NUM_Q_ARG "qpairs"
60 #define ETH_AF_PACKET_BLOCKSIZE_ARG "blocksz"
61 #define ETH_AF_PACKET_FRAMESIZE_ARG "framesz"
62 #define ETH_AF_PACKET_FRAMECOUNT_ARG "framecnt"
64 #define DFLT_BLOCK_SIZE (1 << 12)
65 #define DFLT_FRAME_SIZE (1 << 11)
66 #define DFLT_FRAME_COUNT (1 << 9)
73 unsigned int framecount;
74 unsigned int framenum;
76 struct rte_mempool *mb_pool;
78 volatile unsigned long rx_pkts;
79 volatile unsigned long err_pkts;
87 unsigned int framecount;
88 unsigned int framenum;
90 volatile unsigned long tx_pkts;
91 volatile unsigned long err_pkts;
94 struct pmd_internals {
98 struct ether_addr eth_addr;
100 struct tpacket_req req;
102 struct pkt_rx_queue rx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
103 struct pkt_tx_queue tx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
106 static const char *valid_arguments[] = {
107 ETH_AF_PACKET_IFACE_ARG,
108 ETH_AF_PACKET_NUM_Q_ARG,
109 ETH_AF_PACKET_BLOCKSIZE_ARG,
110 ETH_AF_PACKET_FRAMESIZE_ARG,
111 ETH_AF_PACKET_FRAMECOUNT_ARG,
115 static const char *drivername = "AF_PACKET PMD";
117 static struct rte_eth_link pmd_link = {
119 .link_duplex = ETH_LINK_FULL_DUPLEX,
124 eth_af_packet_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
127 struct tpacket2_hdr *ppd;
128 struct rte_mbuf *mbuf;
130 struct pkt_rx_queue *pkt_q = queue;
132 unsigned int framecount, framenum;
134 if (unlikely(nb_pkts == 0))
138 * Reads the given number of packets from the AF_PACKET socket one by
139 * one and copies the packet data into a newly allocated mbuf.
141 framecount = pkt_q->framecount;
142 framenum = pkt_q->framenum;
143 for (i = 0; i < nb_pkts; i++) {
144 /* point at the next incoming frame */
145 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
146 if ((ppd->tp_status & TP_STATUS_USER) == 0)
149 /* allocate the next mbuf */
150 mbuf = rte_pktmbuf_alloc(pkt_q->mb_pool);
151 if (unlikely(mbuf == NULL))
154 /* packet will fit in the mbuf, go ahead and receive it */
155 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf) = ppd->tp_snaplen;
156 pbuf = (uint8_t *) ppd + ppd->tp_mac;
157 memcpy(rte_pktmbuf_mtod(mbuf, void *), pbuf, rte_pktmbuf_data_len(mbuf));
159 /* release incoming frame and advance ring buffer */
160 ppd->tp_status = TP_STATUS_KERNEL;
161 if (++framenum >= framecount)
164 /* account for the receive frame */
168 pkt_q->framenum = framenum;
169 pkt_q->rx_pkts += num_rx;
174 * Callback to handle sending packets through a real NIC.
177 eth_af_packet_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
179 struct tpacket2_hdr *ppd;
180 struct rte_mbuf *mbuf;
182 unsigned int framecount, framenum;
184 struct pkt_tx_queue *pkt_q = queue;
188 if (unlikely(nb_pkts == 0))
191 memset(&pfd, 0, sizeof(pfd));
192 pfd.fd = pkt_q->sockfd;
193 pfd.events = POLLOUT;
196 framecount = pkt_q->framecount;
197 framenum = pkt_q->framenum;
198 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
199 for (i = 0; i < nb_pkts; i++) {
200 /* point at the next incoming frame */
201 if ((ppd->tp_status != TP_STATUS_AVAILABLE) &&
202 (poll(&pfd, 1, -1) < 0))
205 /* copy the tx frame data */
207 pbuf = (uint8_t *) ppd + TPACKET2_HDRLEN -
208 sizeof(struct sockaddr_ll);
209 memcpy(pbuf, rte_pktmbuf_mtod(mbuf, void*), rte_pktmbuf_data_len(mbuf));
210 ppd->tp_len = ppd->tp_snaplen = rte_pktmbuf_data_len(mbuf);
212 /* release incoming frame and advance ring buffer */
213 ppd->tp_status = TP_STATUS_SEND_REQUEST;
214 if (++framenum >= framecount)
216 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
219 rte_pktmbuf_free(mbuf);
222 /* kick-off transmits */
223 sendto(pkt_q->sockfd, NULL, 0, MSG_DONTWAIT, NULL, 0);
225 pkt_q->framenum = framenum;
226 pkt_q->tx_pkts += num_tx;
227 pkt_q->err_pkts += nb_pkts - num_tx;
232 eth_dev_start(struct rte_eth_dev *dev)
234 dev->data->dev_link.link_status = 1;
239 * This function gets called when the current port gets stopped.
242 eth_dev_stop(struct rte_eth_dev *dev)
246 struct pmd_internals *internals = dev->data->dev_private;
248 for (i = 0; i < internals->nb_queues; i++) {
249 sockfd = internals->rx_queue[i].sockfd;
252 sockfd = internals->tx_queue[i].sockfd;
257 dev->data->dev_link.link_status = 0;
261 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
267 eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
269 struct pmd_internals *internals = dev->data->dev_private;
271 dev_info->driver_name = drivername;
272 dev_info->if_index = internals->if_index;
273 dev_info->max_mac_addrs = 1;
274 dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN;
275 dev_info->max_rx_queues = (uint16_t)internals->nb_queues;
276 dev_info->max_tx_queues = (uint16_t)internals->nb_queues;
277 dev_info->min_rx_bufsize = 0;
278 dev_info->pci_dev = NULL;
282 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
285 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
286 const struct pmd_internals *internal = dev->data->dev_private;
288 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
289 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
290 for (i = 0; i < imax; i++) {
291 igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
292 rx_total += igb_stats->q_ipackets[i];
295 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
296 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
297 for (i = 0; i < imax; i++) {
298 igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
299 igb_stats->q_errors[i] = internal->tx_queue[i].err_pkts;
300 tx_total += igb_stats->q_opackets[i];
301 tx_err_total += igb_stats->q_errors[i];
304 igb_stats->ipackets = rx_total;
305 igb_stats->opackets = tx_total;
306 igb_stats->oerrors = tx_err_total;
310 eth_stats_reset(struct rte_eth_dev *dev)
313 struct pmd_internals *internal = dev->data->dev_private;
315 for (i = 0; i < internal->nb_queues; i++)
316 internal->rx_queue[i].rx_pkts = 0;
318 for (i = 0; i < internal->nb_queues; i++) {
319 internal->tx_queue[i].tx_pkts = 0;
320 internal->tx_queue[i].err_pkts = 0;
325 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
330 eth_queue_release(void *q __rte_unused)
335 eth_link_update(struct rte_eth_dev *dev __rte_unused,
336 int wait_to_complete __rte_unused)
342 eth_rx_queue_setup(struct rte_eth_dev *dev,
343 uint16_t rx_queue_id,
344 uint16_t nb_rx_desc __rte_unused,
345 unsigned int socket_id __rte_unused,
346 const struct rte_eth_rxconf *rx_conf __rte_unused,
347 struct rte_mempool *mb_pool)
349 struct pmd_internals *internals = dev->data->dev_private;
350 struct pkt_rx_queue *pkt_q = &internals->rx_queue[rx_queue_id];
351 struct rte_pktmbuf_pool_private *mbp_priv;
354 pkt_q->mb_pool = mb_pool;
356 /* Now get the space available for data in the mbuf */
357 mbp_priv = rte_mempool_get_priv(pkt_q->mb_pool);
358 buf_size = (uint16_t) (mbp_priv->mbuf_data_room_size -
359 RTE_PKTMBUF_HEADROOM);
361 if (ETH_FRAME_LEN > buf_size) {
363 "%s: %d bytes will not fit in mbuf (%d bytes)\n",
364 dev->data->name, ETH_FRAME_LEN, buf_size);
368 dev->data->rx_queues[rx_queue_id] = pkt_q;
374 eth_tx_queue_setup(struct rte_eth_dev *dev,
375 uint16_t tx_queue_id,
376 uint16_t nb_tx_desc __rte_unused,
377 unsigned int socket_id __rte_unused,
378 const struct rte_eth_txconf *tx_conf __rte_unused)
381 struct pmd_internals *internals = dev->data->dev_private;
383 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
387 static struct eth_dev_ops ops = {
388 .dev_start = eth_dev_start,
389 .dev_stop = eth_dev_stop,
390 .dev_close = eth_dev_close,
391 .dev_configure = eth_dev_configure,
392 .dev_infos_get = eth_dev_info,
393 .rx_queue_setup = eth_rx_queue_setup,
394 .tx_queue_setup = eth_tx_queue_setup,
395 .rx_queue_release = eth_queue_release,
396 .tx_queue_release = eth_queue_release,
397 .link_update = eth_link_update,
398 .stats_get = eth_stats_get,
399 .stats_reset = eth_stats_reset,
403 * Opens an AF_PACKET socket
406 open_packet_iface(const char *key __rte_unused,
407 const char *value __rte_unused,
410 int *sockfd = extra_args;
412 /* Open an AF_PACKET socket... */
413 *sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
415 RTE_LOG(ERR, PMD, "Could not open AF_PACKET socket\n");
423 rte_pmd_init_internals(const char *name,
425 const unsigned nb_queues,
426 unsigned int blocksize,
427 unsigned int blockcnt,
428 unsigned int framesize,
429 unsigned int framecnt,
430 const unsigned numa_node,
431 struct pmd_internals **internals,
432 struct rte_eth_dev **eth_dev,
433 struct rte_kvargs *kvlist)
435 struct rte_eth_dev_data *data = NULL;
436 struct rte_pci_device *pci_dev = NULL;
437 struct rte_kvargs_pair *pair = NULL;
441 struct sockaddr_ll sockaddr;
442 struct tpacket_req *req;
443 struct pkt_rx_queue *rx_queue;
444 struct pkt_tx_queue *tx_queue;
445 int rc, qsockfd, tpver, discard;
446 unsigned int i, q, rdsize;
447 int fanout_arg __rte_unused, bypass __rte_unused;
449 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
450 pair = &kvlist->pairs[k_idx];
451 if (strstr(pair->key, ETH_AF_PACKET_IFACE_ARG) != NULL)
456 "%s: no interface specified for AF_PACKET ethdev\n",
462 "%s: creating AF_PACKET-backed ethdev on numa socket %u\n",
466 * now do all data allocation - for eth_dev structure, dummy pci driver
467 * and internal (private) data
469 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
473 pci_dev = rte_zmalloc_socket(name, sizeof(*pci_dev), 0, numa_node);
477 *internals = rte_zmalloc_socket(name, sizeof(**internals),
479 if (*internals == NULL)
482 for (q = 0; q < nb_queues; q++) {
483 (*internals)->rx_queue[q].map = MAP_FAILED;
484 (*internals)->tx_queue[q].map = MAP_FAILED;
487 req = &((*internals)->req);
489 req->tp_block_size = blocksize;
490 req->tp_block_nr = blockcnt;
491 req->tp_frame_size = framesize;
492 req->tp_frame_nr = framecnt;
494 ifnamelen = strlen(pair->value);
495 if (ifnamelen < sizeof(ifr.ifr_name)) {
496 memcpy(ifr.ifr_name, pair->value, ifnamelen);
497 ifr.ifr_name[ifnamelen] = '\0';
500 "%s: I/F name too long (%s)\n",
504 if (ioctl(sockfd, SIOCGIFINDEX, &ifr) == -1) {
506 "%s: ioctl failed (SIOCGIFINDEX)\n",
510 (*internals)->if_index = ifr.ifr_ifindex;
512 if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) == -1) {
514 "%s: ioctl failed (SIOCGIFHWADDR)\n",
518 memcpy(&(*internals)->eth_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
520 memset(&sockaddr, 0, sizeof(sockaddr));
521 sockaddr.sll_family = AF_PACKET;
522 sockaddr.sll_protocol = htons(ETH_P_ALL);
523 sockaddr.sll_ifindex = (*internals)->if_index;
525 #if defined(PACKET_FANOUT)
526 fanout_arg = (getpid() ^ (*internals)->if_index) & 0xffff;
527 fanout_arg |= (PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_DEFRAG) << 16;
528 #if defined(PACKET_FANOUT_FLAG_ROLLOVER)
529 fanout_arg |= PACKET_FANOUT_FLAG_ROLLOVER << 16;
533 for (q = 0; q < nb_queues; q++) {
534 /* Open an AF_PACKET socket for this queue... */
535 qsockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
538 "%s: could not open AF_PACKET socket\n",
544 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_VERSION,
545 &tpver, sizeof(tpver));
548 "%s: could not set PACKET_VERSION on AF_PACKET "
549 "socket for %s\n", name, pair->value);
554 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_LOSS,
555 &discard, sizeof(discard));
558 "%s: could not set PACKET_LOSS on "
559 "AF_PACKET socket for %s\n", name, pair->value);
563 #if defined(PACKET_QDISC_BYPASS)
565 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS,
566 &bypass, sizeof(bypass));
569 "%s: could not set PACKET_QDISC_BYPASS "
570 "on AF_PACKET socket for %s\n", name,
576 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_RX_RING, req, sizeof(*req));
579 "%s: could not set PACKET_RX_RING on AF_PACKET "
580 "socket for %s\n", name, pair->value);
584 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_TX_RING, req, sizeof(*req));
587 "%s: could not set PACKET_TX_RING on AF_PACKET "
588 "socket for %s\n", name, pair->value);
592 rx_queue = &((*internals)->rx_queue[q]);
593 rx_queue->framecount = req->tp_frame_nr;
595 rx_queue->map = mmap(NULL, 2 * req->tp_block_size * req->tp_block_nr,
596 PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED,
598 if (rx_queue->map == MAP_FAILED) {
600 "%s: call to mmap failed on AF_PACKET socket for %s\n",
605 /* rdsize is same for both Tx and Rx */
606 rdsize = req->tp_frame_nr * sizeof(*(rx_queue->rd));
608 rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
609 if (rx_queue->rd == NULL)
611 for (i = 0; i < req->tp_frame_nr; ++i) {
612 rx_queue->rd[i].iov_base = rx_queue->map + (i * framesize);
613 rx_queue->rd[i].iov_len = req->tp_frame_size;
615 rx_queue->sockfd = qsockfd;
617 tx_queue = &((*internals)->tx_queue[q]);
618 tx_queue->framecount = req->tp_frame_nr;
620 tx_queue->map = rx_queue->map + req->tp_block_size * req->tp_block_nr;
622 tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
623 if (tx_queue->rd == NULL)
625 for (i = 0; i < req->tp_frame_nr; ++i) {
626 tx_queue->rd[i].iov_base = tx_queue->map + (i * framesize);
627 tx_queue->rd[i].iov_len = req->tp_frame_size;
629 tx_queue->sockfd = qsockfd;
631 rc = bind(qsockfd, (const struct sockaddr*)&sockaddr, sizeof(sockaddr));
634 "%s: could not bind AF_PACKET socket to %s\n",
639 #if defined(PACKET_FANOUT)
640 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_FANOUT,
641 &fanout_arg, sizeof(fanout_arg));
644 "%s: could not set PACKET_FANOUT on AF_PACKET socket "
645 "for %s\n", name, pair->value);
651 /* reserve an ethdev entry */
652 *eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_VIRTUAL);
653 if (*eth_dev == NULL)
657 * now put it all together
658 * - store queue data in internals,
659 * - store numa_node info in pci_driver
660 * - point eth_dev_data to internals and pci_driver
661 * - and point eth_dev structure to new eth_dev_data structure
664 (*internals)->nb_queues = nb_queues;
666 data->dev_private = *internals;
667 data->port_id = (*eth_dev)->data->port_id;
668 data->nb_rx_queues = (uint16_t)nb_queues;
669 data->nb_tx_queues = (uint16_t)nb_queues;
670 data->dev_link = pmd_link;
671 data->mac_addrs = &(*internals)->eth_addr;
673 pci_dev->numa_node = numa_node;
675 (*eth_dev)->data = data;
676 (*eth_dev)->dev_ops = &ops;
677 (*eth_dev)->pci_dev = pci_dev;
687 for (q = 0; q < nb_queues; q++) {
688 munmap((*internals)->rx_queue[q].map,
689 2 * req->tp_block_size * req->tp_block_nr);
690 if ((*internals)->rx_queue[q].rd)
691 rte_free((*internals)->rx_queue[q].rd);
692 if ((*internals)->tx_queue[q].rd)
693 rte_free((*internals)->tx_queue[q].rd);
695 rte_free(*internals);
701 rte_eth_from_packet(const char *name,
703 const unsigned numa_node,
704 struct rte_kvargs *kvlist)
706 struct pmd_internals *internals = NULL;
707 struct rte_eth_dev *eth_dev = NULL;
708 struct rte_kvargs_pair *pair = NULL;
710 unsigned int blockcount;
711 unsigned int blocksize = DFLT_BLOCK_SIZE;
712 unsigned int framesize = DFLT_FRAME_SIZE;
713 unsigned int framecount = DFLT_FRAME_COUNT;
714 unsigned int qpairs = 1;
716 /* do some parameter checking */
721 * Walk arguments for configurable settings
723 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
724 pair = &kvlist->pairs[k_idx];
725 if (strstr(pair->key, ETH_AF_PACKET_NUM_Q_ARG) != NULL) {
726 qpairs = atoi(pair->value);
728 qpairs > RTE_PMD_AF_PACKET_MAX_RINGS) {
730 "%s: invalid qpairs value\n",
736 if (strstr(pair->key, ETH_AF_PACKET_BLOCKSIZE_ARG) != NULL) {
737 blocksize = atoi(pair->value);
740 "%s: invalid blocksize value\n",
746 if (strstr(pair->key, ETH_AF_PACKET_FRAMESIZE_ARG) != NULL) {
747 framesize = atoi(pair->value);
750 "%s: invalid framesize value\n",
756 if (strstr(pair->key, ETH_AF_PACKET_FRAMECOUNT_ARG) != NULL) {
757 framecount = atoi(pair->value);
760 "%s: invalid framecount value\n",
768 if (framesize > blocksize) {
770 "%s: AF_PACKET MMAP frame size exceeds block size!\n",
775 blockcount = framecount / (blocksize / framesize);
778 "%s: invalid AF_PACKET MMAP parameters\n", name);
782 RTE_LOG(INFO, PMD, "%s: AF_PACKET MMAP parameters:\n", name);
783 RTE_LOG(INFO, PMD, "%s:\tblock size %d\n", name, blocksize);
784 RTE_LOG(INFO, PMD, "%s:\tblock count %d\n", name, blockcount);
785 RTE_LOG(INFO, PMD, "%s:\tframe size %d\n", name, framesize);
786 RTE_LOG(INFO, PMD, "%s:\tframe count %d\n", name, framecount);
788 if (rte_pmd_init_internals(name, *sockfd, qpairs,
789 blocksize, blockcount,
790 framesize, framecount,
791 numa_node, &internals, ð_dev,
795 eth_dev->rx_pkt_burst = eth_af_packet_rx;
796 eth_dev->tx_pkt_burst = eth_af_packet_tx;
802 rte_pmd_af_packet_devinit(const char *name, const char *params)
806 struct rte_kvargs *kvlist;
809 RTE_LOG(INFO, PMD, "Initializing pmd_af_packet for %s\n", name);
811 numa_node = rte_socket_id();
813 kvlist = rte_kvargs_parse(params, valid_arguments);
818 * If iface argument is passed we open the NICs and use them for
821 if (rte_kvargs_count(kvlist, ETH_AF_PACKET_IFACE_ARG) == 1) {
823 ret = rte_kvargs_process(kvlist, ETH_AF_PACKET_IFACE_ARG,
824 &open_packet_iface, &sockfd);
829 ret = rte_eth_from_packet(name, &sockfd, numa_node, kvlist);
830 close(sockfd); /* no longer needed */
838 static struct rte_driver pmd_af_packet_drv = {
839 .name = "eth_af_packet",
841 .init = rte_pmd_af_packet_devinit,
844 PMD_REGISTER_DRIVER(pmd_af_packet_drv);