4 * Copyright(c) 2014 John W. Linville <linville@tuxdriver.com>
6 * Originally based upon librte_pmd_pcap code:
8 * Copyright(c) 2010-2015 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 #define ETH_AF_PACKET_IFACE_ARG "iface"
57 #define ETH_AF_PACKET_NUM_Q_ARG "qpairs"
58 #define ETH_AF_PACKET_BLOCKSIZE_ARG "blocksz"
59 #define ETH_AF_PACKET_FRAMESIZE_ARG "framesz"
60 #define ETH_AF_PACKET_FRAMECOUNT_ARG "framecnt"
62 #define DFLT_BLOCK_SIZE (1 << 12)
63 #define DFLT_FRAME_SIZE (1 << 11)
64 #define DFLT_FRAME_COUNT (1 << 9)
66 #define RTE_PMD_AF_PACKET_MAX_RINGS 16
73 unsigned int framecount;
74 unsigned int framenum;
76 struct rte_mempool *mb_pool;
79 volatile unsigned long rx_pkts;
80 volatile unsigned long err_pkts;
81 volatile unsigned long rx_bytes;
89 unsigned int framecount;
90 unsigned int framenum;
92 volatile unsigned long tx_pkts;
93 volatile unsigned long err_pkts;
94 volatile unsigned long tx_bytes;
97 struct pmd_internals {
101 struct ether_addr eth_addr;
103 struct tpacket_req req;
105 struct pkt_rx_queue rx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
106 struct pkt_tx_queue tx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
109 static const char *valid_arguments[] = {
110 ETH_AF_PACKET_IFACE_ARG,
111 ETH_AF_PACKET_NUM_Q_ARG,
112 ETH_AF_PACKET_BLOCKSIZE_ARG,
113 ETH_AF_PACKET_FRAMESIZE_ARG,
114 ETH_AF_PACKET_FRAMECOUNT_ARG,
118 static const char *drivername = "AF_PACKET PMD";
120 static struct rte_eth_link pmd_link = {
121 .link_speed = ETH_SPEED_NUM_10G,
122 .link_duplex = ETH_LINK_FULL_DUPLEX,
123 .link_status = ETH_LINK_DOWN,
124 .link_autoneg = ETH_LINK_FIXED,
128 eth_af_packet_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
131 struct tpacket2_hdr *ppd;
132 struct rte_mbuf *mbuf;
134 struct pkt_rx_queue *pkt_q = queue;
136 unsigned long num_rx_bytes = 0;
137 unsigned int framecount, framenum;
139 if (unlikely(nb_pkts == 0))
143 * Reads the given number of packets from the AF_PACKET socket one by
144 * one and copies the packet data into a newly allocated mbuf.
146 framecount = pkt_q->framecount;
147 framenum = pkt_q->framenum;
148 for (i = 0; i < nb_pkts; i++) {
149 /* point at the next incoming frame */
150 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
151 if ((ppd->tp_status & TP_STATUS_USER) == 0)
154 /* allocate the next mbuf */
155 mbuf = rte_pktmbuf_alloc(pkt_q->mb_pool);
156 if (unlikely(mbuf == NULL))
159 /* packet will fit in the mbuf, go ahead and receive it */
160 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf) = ppd->tp_snaplen;
161 pbuf = (uint8_t *) ppd + ppd->tp_mac;
162 memcpy(rte_pktmbuf_mtod(mbuf, void *), pbuf, rte_pktmbuf_data_len(mbuf));
164 /* release incoming frame and advance ring buffer */
165 ppd->tp_status = TP_STATUS_KERNEL;
166 if (++framenum >= framecount)
168 mbuf->port = pkt_q->in_port;
170 /* account for the receive frame */
173 num_rx_bytes += mbuf->pkt_len;
175 pkt_q->framenum = framenum;
176 pkt_q->rx_pkts += num_rx;
177 pkt_q->rx_bytes += num_rx_bytes;
182 * Callback to handle sending packets through a real NIC.
185 eth_af_packet_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
187 struct tpacket2_hdr *ppd;
188 struct rte_mbuf *mbuf;
190 unsigned int framecount, framenum;
192 struct pkt_tx_queue *pkt_q = queue;
194 unsigned long num_tx_bytes = 0;
197 if (unlikely(nb_pkts == 0))
200 memset(&pfd, 0, sizeof(pfd));
201 pfd.fd = pkt_q->sockfd;
202 pfd.events = POLLOUT;
205 framecount = pkt_q->framecount;
206 framenum = pkt_q->framenum;
207 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
208 for (i = 0; i < nb_pkts; i++) {
209 /* point at the next incoming frame */
210 if ((ppd->tp_status != TP_STATUS_AVAILABLE) &&
211 (poll(&pfd, 1, -1) < 0))
214 /* copy the tx frame data */
216 pbuf = (uint8_t *) ppd + TPACKET2_HDRLEN -
217 sizeof(struct sockaddr_ll);
218 memcpy(pbuf, rte_pktmbuf_mtod(mbuf, void*), rte_pktmbuf_data_len(mbuf));
219 ppd->tp_len = ppd->tp_snaplen = rte_pktmbuf_data_len(mbuf);
221 /* release incoming frame and advance ring buffer */
222 ppd->tp_status = TP_STATUS_SEND_REQUEST;
223 if (++framenum >= framecount)
225 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
228 num_tx_bytes += mbuf->pkt_len;
229 rte_pktmbuf_free(mbuf);
232 /* kick-off transmits */
233 if (sendto(pkt_q->sockfd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1)
234 return 0; /* error sending -- no packets transmitted */
236 pkt_q->framenum = framenum;
237 pkt_q->tx_pkts += num_tx;
238 pkt_q->err_pkts += nb_pkts - num_tx;
239 pkt_q->tx_bytes += num_tx_bytes;
244 eth_dev_start(struct rte_eth_dev *dev)
246 dev->data->dev_link.link_status = ETH_LINK_UP;
251 * This function gets called when the current port gets stopped.
254 eth_dev_stop(struct rte_eth_dev *dev)
258 struct pmd_internals *internals = dev->data->dev_private;
260 for (i = 0; i < internals->nb_queues; i++) {
261 sockfd = internals->rx_queue[i].sockfd;
265 /* Prevent use after free in case tx fd == rx fd */
266 if (sockfd != internals->tx_queue[i].sockfd) {
267 sockfd = internals->tx_queue[i].sockfd;
272 internals->rx_queue[i].sockfd = -1;
273 internals->tx_queue[i].sockfd = -1;
276 dev->data->dev_link.link_status = ETH_LINK_DOWN;
280 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
286 eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
288 struct pmd_internals *internals = dev->data->dev_private;
290 dev_info->driver_name = drivername;
291 dev_info->if_index = internals->if_index;
292 dev_info->max_mac_addrs = 1;
293 dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN;
294 dev_info->max_rx_queues = (uint16_t)internals->nb_queues;
295 dev_info->max_tx_queues = (uint16_t)internals->nb_queues;
296 dev_info->min_rx_bufsize = 0;
297 dev_info->pci_dev = NULL;
301 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
304 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
305 unsigned long rx_bytes_total = 0, tx_bytes_total = 0;
306 const struct pmd_internals *internal = dev->data->dev_private;
308 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
309 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
310 for (i = 0; i < imax; i++) {
311 igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
312 igb_stats->q_ibytes[i] = internal->rx_queue[i].rx_bytes;
313 rx_total += igb_stats->q_ipackets[i];
314 rx_bytes_total += igb_stats->q_ibytes[i];
317 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
318 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
319 for (i = 0; i < imax; i++) {
320 igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
321 igb_stats->q_errors[i] = internal->tx_queue[i].err_pkts;
322 igb_stats->q_obytes[i] = internal->tx_queue[i].tx_bytes;
323 tx_total += igb_stats->q_opackets[i];
324 tx_err_total += igb_stats->q_errors[i];
325 tx_bytes_total += igb_stats->q_obytes[i];
328 igb_stats->ipackets = rx_total;
329 igb_stats->ibytes = rx_bytes_total;
330 igb_stats->opackets = tx_total;
331 igb_stats->oerrors = tx_err_total;
332 igb_stats->obytes = tx_bytes_total;
336 eth_stats_reset(struct rte_eth_dev *dev)
339 struct pmd_internals *internal = dev->data->dev_private;
341 for (i = 0; i < internal->nb_queues; i++) {
342 internal->rx_queue[i].rx_pkts = 0;
343 internal->rx_queue[i].rx_bytes = 0;
346 for (i = 0; i < internal->nb_queues; i++) {
347 internal->tx_queue[i].tx_pkts = 0;
348 internal->tx_queue[i].err_pkts = 0;
349 internal->tx_queue[i].tx_bytes = 0;
354 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
359 eth_queue_release(void *q __rte_unused)
364 eth_link_update(struct rte_eth_dev *dev __rte_unused,
365 int wait_to_complete __rte_unused)
371 eth_rx_queue_setup(struct rte_eth_dev *dev,
372 uint16_t rx_queue_id,
373 uint16_t nb_rx_desc __rte_unused,
374 unsigned int socket_id __rte_unused,
375 const struct rte_eth_rxconf *rx_conf __rte_unused,
376 struct rte_mempool *mb_pool)
378 struct pmd_internals *internals = dev->data->dev_private;
379 struct pkt_rx_queue *pkt_q = &internals->rx_queue[rx_queue_id];
382 pkt_q->mb_pool = mb_pool;
384 /* Now get the space available for data in the mbuf */
385 buf_size = (uint16_t)(rte_pktmbuf_data_room_size(pkt_q->mb_pool) -
386 RTE_PKTMBUF_HEADROOM);
388 if (ETH_FRAME_LEN > buf_size) {
390 "%s: %d bytes will not fit in mbuf (%d bytes)\n",
391 dev->data->name, ETH_FRAME_LEN, buf_size);
395 dev->data->rx_queues[rx_queue_id] = pkt_q;
396 pkt_q->in_port = dev->data->port_id;
402 eth_tx_queue_setup(struct rte_eth_dev *dev,
403 uint16_t tx_queue_id,
404 uint16_t nb_tx_desc __rte_unused,
405 unsigned int socket_id __rte_unused,
406 const struct rte_eth_txconf *tx_conf __rte_unused)
409 struct pmd_internals *internals = dev->data->dev_private;
411 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
415 static const struct eth_dev_ops ops = {
416 .dev_start = eth_dev_start,
417 .dev_stop = eth_dev_stop,
418 .dev_close = eth_dev_close,
419 .dev_configure = eth_dev_configure,
420 .dev_infos_get = eth_dev_info,
421 .rx_queue_setup = eth_rx_queue_setup,
422 .tx_queue_setup = eth_tx_queue_setup,
423 .rx_queue_release = eth_queue_release,
424 .tx_queue_release = eth_queue_release,
425 .link_update = eth_link_update,
426 .stats_get = eth_stats_get,
427 .stats_reset = eth_stats_reset,
431 * Opens an AF_PACKET socket
434 open_packet_iface(const char *key __rte_unused,
435 const char *value __rte_unused,
438 int *sockfd = extra_args;
440 /* Open an AF_PACKET socket... */
441 *sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
443 RTE_LOG(ERR, PMD, "Could not open AF_PACKET socket\n");
451 rte_pmd_init_internals(const char *name,
453 const unsigned nb_queues,
454 unsigned int blocksize,
455 unsigned int blockcnt,
456 unsigned int framesize,
457 unsigned int framecnt,
458 const unsigned numa_node,
459 struct pmd_internals **internals,
460 struct rte_eth_dev **eth_dev,
461 struct rte_kvargs *kvlist)
463 struct rte_eth_dev_data *data = NULL;
464 struct rte_kvargs_pair *pair = NULL;
468 struct sockaddr_ll sockaddr;
469 struct tpacket_req *req;
470 struct pkt_rx_queue *rx_queue;
471 struct pkt_tx_queue *tx_queue;
472 int rc, tpver, discard;
474 unsigned int i, q, rdsize;
475 int fanout_arg __rte_unused, bypass __rte_unused;
477 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
478 pair = &kvlist->pairs[k_idx];
479 if (strstr(pair->key, ETH_AF_PACKET_IFACE_ARG) != NULL)
484 "%s: no interface specified for AF_PACKET ethdev\n",
490 "%s: creating AF_PACKET-backed ethdev on numa socket %u\n",
494 * now do all data allocation - for eth_dev structure, dummy pci driver
495 * and internal (private) data
497 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
501 *internals = rte_zmalloc_socket(name, sizeof(**internals),
503 if (*internals == NULL)
506 for (q = 0; q < nb_queues; q++) {
507 (*internals)->rx_queue[q].map = MAP_FAILED;
508 (*internals)->tx_queue[q].map = MAP_FAILED;
511 req = &((*internals)->req);
513 req->tp_block_size = blocksize;
514 req->tp_block_nr = blockcnt;
515 req->tp_frame_size = framesize;
516 req->tp_frame_nr = framecnt;
518 ifnamelen = strlen(pair->value);
519 if (ifnamelen < sizeof(ifr.ifr_name)) {
520 memcpy(ifr.ifr_name, pair->value, ifnamelen);
521 ifr.ifr_name[ifnamelen] = '\0';
524 "%s: I/F name too long (%s)\n",
528 if (ioctl(sockfd, SIOCGIFINDEX, &ifr) == -1) {
530 "%s: ioctl failed (SIOCGIFINDEX)\n",
534 (*internals)->if_index = ifr.ifr_ifindex;
536 if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) == -1) {
538 "%s: ioctl failed (SIOCGIFHWADDR)\n",
542 memcpy(&(*internals)->eth_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
544 memset(&sockaddr, 0, sizeof(sockaddr));
545 sockaddr.sll_family = AF_PACKET;
546 sockaddr.sll_protocol = htons(ETH_P_ALL);
547 sockaddr.sll_ifindex = (*internals)->if_index;
549 #if defined(PACKET_FANOUT)
550 fanout_arg = (getpid() ^ (*internals)->if_index) & 0xffff;
551 fanout_arg |= (PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_DEFRAG) << 16;
552 #if defined(PACKET_FANOUT_FLAG_ROLLOVER)
553 fanout_arg |= PACKET_FANOUT_FLAG_ROLLOVER << 16;
557 for (q = 0; q < nb_queues; q++) {
558 /* Open an AF_PACKET socket for this queue... */
559 qsockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
562 "%s: could not open AF_PACKET socket\n",
568 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_VERSION,
569 &tpver, sizeof(tpver));
572 "%s: could not set PACKET_VERSION on AF_PACKET "
573 "socket for %s\n", name, pair->value);
578 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_LOSS,
579 &discard, sizeof(discard));
582 "%s: could not set PACKET_LOSS on "
583 "AF_PACKET socket for %s\n", name, pair->value);
587 #if defined(PACKET_QDISC_BYPASS)
589 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS,
590 &bypass, sizeof(bypass));
593 "%s: could not set PACKET_QDISC_BYPASS "
594 "on AF_PACKET socket for %s\n", name,
600 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_RX_RING, req, sizeof(*req));
603 "%s: could not set PACKET_RX_RING on AF_PACKET "
604 "socket for %s\n", name, pair->value);
608 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_TX_RING, req, sizeof(*req));
611 "%s: could not set PACKET_TX_RING on AF_PACKET "
612 "socket for %s\n", name, pair->value);
616 rx_queue = &((*internals)->rx_queue[q]);
617 rx_queue->framecount = req->tp_frame_nr;
619 rx_queue->map = mmap(NULL, 2 * req->tp_block_size * req->tp_block_nr,
620 PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED,
622 if (rx_queue->map == MAP_FAILED) {
624 "%s: call to mmap failed on AF_PACKET socket for %s\n",
629 /* rdsize is same for both Tx and Rx */
630 rdsize = req->tp_frame_nr * sizeof(*(rx_queue->rd));
632 rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
633 if (rx_queue->rd == NULL)
635 for (i = 0; i < req->tp_frame_nr; ++i) {
636 rx_queue->rd[i].iov_base = rx_queue->map + (i * framesize);
637 rx_queue->rd[i].iov_len = req->tp_frame_size;
639 rx_queue->sockfd = qsockfd;
641 tx_queue = &((*internals)->tx_queue[q]);
642 tx_queue->framecount = req->tp_frame_nr;
644 tx_queue->map = rx_queue->map + req->tp_block_size * req->tp_block_nr;
646 tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
647 if (tx_queue->rd == NULL)
649 for (i = 0; i < req->tp_frame_nr; ++i) {
650 tx_queue->rd[i].iov_base = tx_queue->map + (i * framesize);
651 tx_queue->rd[i].iov_len = req->tp_frame_size;
653 tx_queue->sockfd = qsockfd;
655 rc = bind(qsockfd, (const struct sockaddr*)&sockaddr, sizeof(sockaddr));
658 "%s: could not bind AF_PACKET socket to %s\n",
663 #if defined(PACKET_FANOUT)
664 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_FANOUT,
665 &fanout_arg, sizeof(fanout_arg));
668 "%s: could not set PACKET_FANOUT on AF_PACKET socket "
669 "for %s\n", name, pair->value);
675 /* reserve an ethdev entry */
676 *eth_dev = rte_eth_dev_allocate(name);
677 if (*eth_dev == NULL)
681 * now put it all together
682 * - store queue data in internals,
683 * - store numa_node in eth_dev
684 * - point eth_dev_data to internals
685 * - and point eth_dev structure to new eth_dev_data structure
688 (*internals)->nb_queues = nb_queues;
690 data->dev_private = *internals;
691 data->port_id = (*eth_dev)->data->port_id;
692 data->nb_rx_queues = (uint16_t)nb_queues;
693 data->nb_tx_queues = (uint16_t)nb_queues;
694 data->dev_link = pmd_link;
695 data->mac_addrs = &(*internals)->eth_addr;
697 (*eth_dev)->data->name, strlen((*eth_dev)->data->name));
699 (*eth_dev)->data = data;
700 (*eth_dev)->dev_ops = &ops;
701 (*eth_dev)->driver = NULL;
702 (*eth_dev)->data->dev_flags = RTE_ETH_DEV_DETACHABLE;
703 (*eth_dev)->data->drv_name = drivername;
704 (*eth_dev)->data->kdrv = RTE_KDRV_NONE;
705 (*eth_dev)->data->numa_node = numa_node;
712 for (q = 0; q < nb_queues; q++) {
713 munmap((*internals)->rx_queue[q].map,
714 2 * req->tp_block_size * req->tp_block_nr);
716 rte_free((*internals)->rx_queue[q].rd);
717 rte_free((*internals)->tx_queue[q].rd);
718 if (((*internals)->rx_queue[q].sockfd != 0) &&
719 ((*internals)->rx_queue[q].sockfd != qsockfd))
720 close((*internals)->rx_queue[q].sockfd);
722 rte_free(*internals);
729 rte_eth_from_packet(const char *name,
731 const unsigned numa_node,
732 struct rte_kvargs *kvlist)
734 struct pmd_internals *internals = NULL;
735 struct rte_eth_dev *eth_dev = NULL;
736 struct rte_kvargs_pair *pair = NULL;
738 unsigned int blockcount;
739 unsigned int blocksize = DFLT_BLOCK_SIZE;
740 unsigned int framesize = DFLT_FRAME_SIZE;
741 unsigned int framecount = DFLT_FRAME_COUNT;
742 unsigned int qpairs = 1;
744 /* do some parameter checking */
749 * Walk arguments for configurable settings
751 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
752 pair = &kvlist->pairs[k_idx];
753 if (strstr(pair->key, ETH_AF_PACKET_NUM_Q_ARG) != NULL) {
754 qpairs = atoi(pair->value);
756 qpairs > RTE_PMD_AF_PACKET_MAX_RINGS) {
758 "%s: invalid qpairs value\n",
764 if (strstr(pair->key, ETH_AF_PACKET_BLOCKSIZE_ARG) != NULL) {
765 blocksize = atoi(pair->value);
768 "%s: invalid blocksize value\n",
774 if (strstr(pair->key, ETH_AF_PACKET_FRAMESIZE_ARG) != NULL) {
775 framesize = atoi(pair->value);
778 "%s: invalid framesize value\n",
784 if (strstr(pair->key, ETH_AF_PACKET_FRAMECOUNT_ARG) != NULL) {
785 framecount = atoi(pair->value);
788 "%s: invalid framecount value\n",
796 if (framesize > blocksize) {
798 "%s: AF_PACKET MMAP frame size exceeds block size!\n",
803 blockcount = framecount / (blocksize / framesize);
806 "%s: invalid AF_PACKET MMAP parameters\n", name);
810 RTE_LOG(INFO, PMD, "%s: AF_PACKET MMAP parameters:\n", name);
811 RTE_LOG(INFO, PMD, "%s:\tblock size %d\n", name, blocksize);
812 RTE_LOG(INFO, PMD, "%s:\tblock count %d\n", name, blockcount);
813 RTE_LOG(INFO, PMD, "%s:\tframe size %d\n", name, framesize);
814 RTE_LOG(INFO, PMD, "%s:\tframe count %d\n", name, framecount);
816 if (rte_pmd_init_internals(name, *sockfd, qpairs,
817 blocksize, blockcount,
818 framesize, framecount,
819 numa_node, &internals, ð_dev,
823 eth_dev->rx_pkt_burst = eth_af_packet_rx;
824 eth_dev->tx_pkt_burst = eth_af_packet_tx;
830 rte_pmd_af_packet_probe(const char *name, const char *params)
834 struct rte_kvargs *kvlist;
837 RTE_LOG(INFO, PMD, "Initializing pmd_af_packet for %s\n", name);
839 numa_node = rte_socket_id();
841 kvlist = rte_kvargs_parse(params, valid_arguments);
842 if (kvlist == NULL) {
848 * If iface argument is passed we open the NICs and use them for
851 if (rte_kvargs_count(kvlist, ETH_AF_PACKET_IFACE_ARG) == 1) {
853 ret = rte_kvargs_process(kvlist, ETH_AF_PACKET_IFACE_ARG,
854 &open_packet_iface, &sockfd);
859 ret = rte_eth_from_packet(name, &sockfd, numa_node, kvlist);
860 close(sockfd); /* no longer needed */
863 rte_kvargs_free(kvlist);
868 rte_pmd_af_packet_remove(const char *name)
870 struct rte_eth_dev *eth_dev = NULL;
871 struct pmd_internals *internals;
874 RTE_LOG(INFO, PMD, "Closing AF_PACKET ethdev on numa socket %u\n",
880 /* find the ethdev entry */
881 eth_dev = rte_eth_dev_allocated(name);
885 internals = eth_dev->data->dev_private;
886 for (q = 0; q < internals->nb_queues; q++) {
887 rte_free(internals->rx_queue[q].rd);
888 rte_free(internals->tx_queue[q].rd);
891 rte_free(eth_dev->data->dev_private);
892 rte_free(eth_dev->data);
894 rte_eth_dev_release_port(eth_dev);
899 static struct rte_vdev_driver pmd_af_packet_drv = {
900 .probe = rte_pmd_af_packet_probe,
901 .remove = rte_pmd_af_packet_remove,
904 RTE_PMD_REGISTER_VDEV(net_af_packet, pmd_af_packet_drv);
905 RTE_PMD_REGISTER_ALIAS(net_af_packet, eth_af_packet);
906 RTE_PMD_REGISTER_PARAM_STRING(net_af_packet,