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;
86 unsigned int frame_data_size;
90 unsigned int framecount;
91 unsigned int framenum;
93 volatile unsigned long tx_pkts;
94 volatile unsigned long err_pkts;
95 volatile unsigned long tx_bytes;
98 struct pmd_internals {
102 struct ether_addr eth_addr;
104 struct tpacket_req req;
106 struct pkt_rx_queue rx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
107 struct pkt_tx_queue tx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
110 static const char *valid_arguments[] = {
111 ETH_AF_PACKET_IFACE_ARG,
112 ETH_AF_PACKET_NUM_Q_ARG,
113 ETH_AF_PACKET_BLOCKSIZE_ARG,
114 ETH_AF_PACKET_FRAMESIZE_ARG,
115 ETH_AF_PACKET_FRAMECOUNT_ARG,
119 static struct rte_eth_link pmd_link = {
120 .link_speed = ETH_SPEED_NUM_10G,
121 .link_duplex = ETH_LINK_FULL_DUPLEX,
122 .link_status = ETH_LINK_DOWN,
123 .link_autoneg = ETH_LINK_SPEED_AUTONEG
127 eth_af_packet_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
130 struct tpacket2_hdr *ppd;
131 struct rte_mbuf *mbuf;
133 struct pkt_rx_queue *pkt_q = queue;
135 unsigned long num_rx_bytes = 0;
136 unsigned int framecount, framenum;
138 if (unlikely(nb_pkts == 0))
142 * Reads the given number of packets from the AF_PACKET socket one by
143 * one and copies the packet data into a newly allocated mbuf.
145 framecount = pkt_q->framecount;
146 framenum = pkt_q->framenum;
147 for (i = 0; i < nb_pkts; i++) {
148 /* point at the next incoming frame */
149 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
150 if ((ppd->tp_status & TP_STATUS_USER) == 0)
153 /* allocate the next mbuf */
154 mbuf = rte_pktmbuf_alloc(pkt_q->mb_pool);
155 if (unlikely(mbuf == NULL))
158 /* packet will fit in the mbuf, go ahead and receive it */
159 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf) = ppd->tp_snaplen;
160 pbuf = (uint8_t *) ppd + ppd->tp_mac;
161 memcpy(rte_pktmbuf_mtod(mbuf, void *), pbuf, rte_pktmbuf_data_len(mbuf));
163 /* release incoming frame and advance ring buffer */
164 ppd->tp_status = TP_STATUS_KERNEL;
165 if (++framenum >= framecount)
167 mbuf->port = pkt_q->in_port;
169 /* account for the receive frame */
172 num_rx_bytes += mbuf->pkt_len;
174 pkt_q->framenum = framenum;
175 pkt_q->rx_pkts += num_rx;
176 pkt_q->rx_bytes += num_rx_bytes;
181 * Callback to handle sending packets through a real NIC.
184 eth_af_packet_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
186 struct tpacket2_hdr *ppd;
187 struct rte_mbuf *mbuf;
189 unsigned int framecount, framenum;
191 struct pkt_tx_queue *pkt_q = queue;
193 unsigned long num_tx_bytes = 0;
196 if (unlikely(nb_pkts == 0))
199 memset(&pfd, 0, sizeof(pfd));
200 pfd.fd = pkt_q->sockfd;
201 pfd.events = POLLOUT;
204 framecount = pkt_q->framecount;
205 framenum = pkt_q->framenum;
206 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
207 for (i = 0; i < nb_pkts; i++) {
210 /* drop oversized packets */
211 if (rte_pktmbuf_data_len(mbuf) > pkt_q->frame_data_size) {
212 rte_pktmbuf_free(mbuf);
216 /* point at the next incoming frame */
217 if ((ppd->tp_status != TP_STATUS_AVAILABLE) &&
218 (poll(&pfd, 1, -1) < 0))
221 /* copy the tx frame data */
222 pbuf = (uint8_t *) ppd + TPACKET2_HDRLEN -
223 sizeof(struct sockaddr_ll);
224 memcpy(pbuf, rte_pktmbuf_mtod(mbuf, void*), rte_pktmbuf_data_len(mbuf));
225 ppd->tp_len = ppd->tp_snaplen = rte_pktmbuf_data_len(mbuf);
227 /* release incoming frame and advance ring buffer */
228 ppd->tp_status = TP_STATUS_SEND_REQUEST;
229 if (++framenum >= framecount)
231 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
234 num_tx_bytes += mbuf->pkt_len;
235 rte_pktmbuf_free(mbuf);
238 /* kick-off transmits */
239 if (sendto(pkt_q->sockfd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1)
240 num_tx = 0; /* error sending -- no packets transmitted */
242 pkt_q->framenum = framenum;
243 pkt_q->tx_pkts += num_tx;
244 pkt_q->err_pkts += i - num_tx;
245 pkt_q->tx_bytes += num_tx_bytes;
250 eth_dev_start(struct rte_eth_dev *dev)
252 dev->data->dev_link.link_status = ETH_LINK_UP;
257 * This function gets called when the current port gets stopped.
260 eth_dev_stop(struct rte_eth_dev *dev)
264 struct pmd_internals *internals = dev->data->dev_private;
266 for (i = 0; i < internals->nb_queues; i++) {
267 sockfd = internals->rx_queue[i].sockfd;
271 /* Prevent use after free in case tx fd == rx fd */
272 if (sockfd != internals->tx_queue[i].sockfd) {
273 sockfd = internals->tx_queue[i].sockfd;
278 internals->rx_queue[i].sockfd = -1;
279 internals->tx_queue[i].sockfd = -1;
282 dev->data->dev_link.link_status = ETH_LINK_DOWN;
286 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
292 eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
294 struct pmd_internals *internals = dev->data->dev_private;
296 dev_info->if_index = internals->if_index;
297 dev_info->max_mac_addrs = 1;
298 dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN;
299 dev_info->max_rx_queues = (uint16_t)internals->nb_queues;
300 dev_info->max_tx_queues = (uint16_t)internals->nb_queues;
301 dev_info->min_rx_bufsize = 0;
305 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
308 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
309 unsigned long rx_bytes_total = 0, tx_bytes_total = 0;
310 const struct pmd_internals *internal = dev->data->dev_private;
312 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
313 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
314 for (i = 0; i < imax; i++) {
315 igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
316 igb_stats->q_ibytes[i] = internal->rx_queue[i].rx_bytes;
317 rx_total += igb_stats->q_ipackets[i];
318 rx_bytes_total += igb_stats->q_ibytes[i];
321 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
322 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
323 for (i = 0; i < imax; i++) {
324 igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
325 igb_stats->q_errors[i] = internal->tx_queue[i].err_pkts;
326 igb_stats->q_obytes[i] = internal->tx_queue[i].tx_bytes;
327 tx_total += igb_stats->q_opackets[i];
328 tx_err_total += igb_stats->q_errors[i];
329 tx_bytes_total += igb_stats->q_obytes[i];
332 igb_stats->ipackets = rx_total;
333 igb_stats->ibytes = rx_bytes_total;
334 igb_stats->opackets = tx_total;
335 igb_stats->oerrors = tx_err_total;
336 igb_stats->obytes = tx_bytes_total;
340 eth_stats_reset(struct rte_eth_dev *dev)
343 struct pmd_internals *internal = dev->data->dev_private;
345 for (i = 0; i < internal->nb_queues; i++) {
346 internal->rx_queue[i].rx_pkts = 0;
347 internal->rx_queue[i].rx_bytes = 0;
350 for (i = 0; i < internal->nb_queues; i++) {
351 internal->tx_queue[i].tx_pkts = 0;
352 internal->tx_queue[i].err_pkts = 0;
353 internal->tx_queue[i].tx_bytes = 0;
358 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
363 eth_queue_release(void *q __rte_unused)
368 eth_link_update(struct rte_eth_dev *dev __rte_unused,
369 int wait_to_complete __rte_unused)
375 eth_rx_queue_setup(struct rte_eth_dev *dev,
376 uint16_t rx_queue_id,
377 uint16_t nb_rx_desc __rte_unused,
378 unsigned int socket_id __rte_unused,
379 const struct rte_eth_rxconf *rx_conf __rte_unused,
380 struct rte_mempool *mb_pool)
382 struct pmd_internals *internals = dev->data->dev_private;
383 struct pkt_rx_queue *pkt_q = &internals->rx_queue[rx_queue_id];
384 unsigned int buf_size, data_size;
386 pkt_q->mb_pool = mb_pool;
388 /* Now get the space available for data in the mbuf */
389 buf_size = rte_pktmbuf_data_room_size(pkt_q->mb_pool) -
390 RTE_PKTMBUF_HEADROOM;
391 data_size = internals->req.tp_frame_size;
392 data_size -= TPACKET2_HDRLEN - sizeof(struct sockaddr_ll);
394 if (data_size > buf_size) {
396 "%s: %d bytes will not fit in mbuf (%d bytes)\n",
397 dev->data->name, data_size, buf_size);
401 dev->data->rx_queues[rx_queue_id] = pkt_q;
402 pkt_q->in_port = dev->data->port_id;
408 eth_tx_queue_setup(struct rte_eth_dev *dev,
409 uint16_t tx_queue_id,
410 uint16_t nb_tx_desc __rte_unused,
411 unsigned int socket_id __rte_unused,
412 const struct rte_eth_txconf *tx_conf __rte_unused)
415 struct pmd_internals *internals = dev->data->dev_private;
417 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
421 static const struct eth_dev_ops ops = {
422 .dev_start = eth_dev_start,
423 .dev_stop = eth_dev_stop,
424 .dev_close = eth_dev_close,
425 .dev_configure = eth_dev_configure,
426 .dev_infos_get = eth_dev_info,
427 .rx_queue_setup = eth_rx_queue_setup,
428 .tx_queue_setup = eth_tx_queue_setup,
429 .rx_queue_release = eth_queue_release,
430 .tx_queue_release = eth_queue_release,
431 .link_update = eth_link_update,
432 .stats_get = eth_stats_get,
433 .stats_reset = eth_stats_reset,
437 * Opens an AF_PACKET socket
440 open_packet_iface(const char *key __rte_unused,
441 const char *value __rte_unused,
444 int *sockfd = extra_args;
446 /* Open an AF_PACKET socket... */
447 *sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
449 RTE_LOG(ERR, PMD, "Could not open AF_PACKET socket\n");
456 static struct rte_vdev_driver pmd_af_packet_drv;
459 rte_pmd_init_internals(const char *name,
461 const unsigned nb_queues,
462 unsigned int blocksize,
463 unsigned int blockcnt,
464 unsigned int framesize,
465 unsigned int framecnt,
466 const unsigned numa_node,
467 struct pmd_internals **internals,
468 struct rte_eth_dev **eth_dev,
469 struct rte_kvargs *kvlist)
471 struct rte_eth_dev_data *data = NULL;
472 struct rte_kvargs_pair *pair = NULL;
476 struct sockaddr_ll sockaddr;
477 struct tpacket_req *req;
478 struct pkt_rx_queue *rx_queue;
479 struct pkt_tx_queue *tx_queue;
480 int rc, tpver, discard;
482 unsigned int i, q, rdsize;
483 int fanout_arg __rte_unused, bypass __rte_unused;
485 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
486 pair = &kvlist->pairs[k_idx];
487 if (strstr(pair->key, ETH_AF_PACKET_IFACE_ARG) != NULL)
492 "%s: no interface specified for AF_PACKET ethdev\n",
498 "%s: creating AF_PACKET-backed ethdev on numa socket %u\n",
502 * now do all data allocation - for eth_dev structure, dummy pci driver
503 * and internal (private) data
505 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
509 *internals = rte_zmalloc_socket(name, sizeof(**internals),
511 if (*internals == NULL)
514 for (q = 0; q < nb_queues; q++) {
515 (*internals)->rx_queue[q].map = MAP_FAILED;
516 (*internals)->tx_queue[q].map = MAP_FAILED;
519 req = &((*internals)->req);
521 req->tp_block_size = blocksize;
522 req->tp_block_nr = blockcnt;
523 req->tp_frame_size = framesize;
524 req->tp_frame_nr = framecnt;
526 ifnamelen = strlen(pair->value);
527 if (ifnamelen < sizeof(ifr.ifr_name)) {
528 memcpy(ifr.ifr_name, pair->value, ifnamelen);
529 ifr.ifr_name[ifnamelen] = '\0';
532 "%s: I/F name too long (%s)\n",
536 if (ioctl(sockfd, SIOCGIFINDEX, &ifr) == -1) {
538 "%s: ioctl failed (SIOCGIFINDEX)\n",
542 (*internals)->if_index = ifr.ifr_ifindex;
544 if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) == -1) {
546 "%s: ioctl failed (SIOCGIFHWADDR)\n",
550 memcpy(&(*internals)->eth_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
552 memset(&sockaddr, 0, sizeof(sockaddr));
553 sockaddr.sll_family = AF_PACKET;
554 sockaddr.sll_protocol = htons(ETH_P_ALL);
555 sockaddr.sll_ifindex = (*internals)->if_index;
557 #if defined(PACKET_FANOUT)
558 fanout_arg = (getpid() ^ (*internals)->if_index) & 0xffff;
559 fanout_arg |= (PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_DEFRAG) << 16;
560 #if defined(PACKET_FANOUT_FLAG_ROLLOVER)
561 fanout_arg |= PACKET_FANOUT_FLAG_ROLLOVER << 16;
565 for (q = 0; q < nb_queues; q++) {
566 /* Open an AF_PACKET socket for this queue... */
567 qsockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
570 "%s: could not open AF_PACKET socket\n",
576 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_VERSION,
577 &tpver, sizeof(tpver));
580 "%s: could not set PACKET_VERSION on AF_PACKET "
581 "socket for %s\n", name, pair->value);
586 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_LOSS,
587 &discard, sizeof(discard));
590 "%s: could not set PACKET_LOSS on "
591 "AF_PACKET socket for %s\n", name, pair->value);
595 #if defined(PACKET_QDISC_BYPASS)
597 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS,
598 &bypass, sizeof(bypass));
601 "%s: could not set PACKET_QDISC_BYPASS "
602 "on AF_PACKET socket for %s\n", name,
608 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_RX_RING, req, sizeof(*req));
611 "%s: could not set PACKET_RX_RING on AF_PACKET "
612 "socket for %s\n", name, pair->value);
616 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_TX_RING, req, sizeof(*req));
619 "%s: could not set PACKET_TX_RING on AF_PACKET "
620 "socket for %s\n", name, pair->value);
624 rx_queue = &((*internals)->rx_queue[q]);
625 rx_queue->framecount = req->tp_frame_nr;
627 rx_queue->map = mmap(NULL, 2 * req->tp_block_size * req->tp_block_nr,
628 PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED,
630 if (rx_queue->map == MAP_FAILED) {
632 "%s: call to mmap failed on AF_PACKET socket for %s\n",
637 /* rdsize is same for both Tx and Rx */
638 rdsize = req->tp_frame_nr * sizeof(*(rx_queue->rd));
640 rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
641 if (rx_queue->rd == NULL)
643 for (i = 0; i < req->tp_frame_nr; ++i) {
644 rx_queue->rd[i].iov_base = rx_queue->map + (i * framesize);
645 rx_queue->rd[i].iov_len = req->tp_frame_size;
647 rx_queue->sockfd = qsockfd;
649 tx_queue = &((*internals)->tx_queue[q]);
650 tx_queue->framecount = req->tp_frame_nr;
651 tx_queue->frame_data_size = req->tp_frame_size;
652 tx_queue->frame_data_size -= TPACKET2_HDRLEN -
653 sizeof(struct sockaddr_ll);
655 tx_queue->map = rx_queue->map + req->tp_block_size * req->tp_block_nr;
657 tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
658 if (tx_queue->rd == NULL)
660 for (i = 0; i < req->tp_frame_nr; ++i) {
661 tx_queue->rd[i].iov_base = tx_queue->map + (i * framesize);
662 tx_queue->rd[i].iov_len = req->tp_frame_size;
664 tx_queue->sockfd = qsockfd;
666 rc = bind(qsockfd, (const struct sockaddr*)&sockaddr, sizeof(sockaddr));
669 "%s: could not bind AF_PACKET socket to %s\n",
674 #if defined(PACKET_FANOUT)
675 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_FANOUT,
676 &fanout_arg, sizeof(fanout_arg));
679 "%s: could not set PACKET_FANOUT on AF_PACKET socket "
680 "for %s\n", name, pair->value);
686 /* reserve an ethdev entry */
687 *eth_dev = rte_eth_dev_allocate(name);
688 if (*eth_dev == NULL)
692 * now put it all together
693 * - store queue data in internals,
694 * - store numa_node in eth_dev
695 * - point eth_dev_data to internals
696 * - and point eth_dev structure to new eth_dev_data structure
699 (*internals)->nb_queues = nb_queues;
701 data->dev_private = *internals;
702 data->port_id = (*eth_dev)->data->port_id;
703 data->nb_rx_queues = (uint16_t)nb_queues;
704 data->nb_tx_queues = (uint16_t)nb_queues;
705 data->dev_link = pmd_link;
706 data->mac_addrs = &(*internals)->eth_addr;
708 (*eth_dev)->data->name, strlen((*eth_dev)->data->name));
710 (*eth_dev)->data = data;
711 (*eth_dev)->dev_ops = &ops;
712 (*eth_dev)->driver = NULL;
713 (*eth_dev)->data->dev_flags = RTE_ETH_DEV_DETACHABLE;
714 (*eth_dev)->data->drv_name = pmd_af_packet_drv.driver.name;
715 (*eth_dev)->data->kdrv = RTE_KDRV_NONE;
716 (*eth_dev)->data->numa_node = numa_node;
723 for (q = 0; q < nb_queues; q++) {
724 munmap((*internals)->rx_queue[q].map,
725 2 * req->tp_block_size * req->tp_block_nr);
727 rte_free((*internals)->rx_queue[q].rd);
728 rte_free((*internals)->tx_queue[q].rd);
729 if (((*internals)->rx_queue[q].sockfd != 0) &&
730 ((*internals)->rx_queue[q].sockfd != qsockfd))
731 close((*internals)->rx_queue[q].sockfd);
733 rte_free(*internals);
740 rte_eth_from_packet(const char *name,
742 const unsigned numa_node,
743 struct rte_kvargs *kvlist)
745 struct pmd_internals *internals = NULL;
746 struct rte_eth_dev *eth_dev = NULL;
747 struct rte_kvargs_pair *pair = NULL;
749 unsigned int blockcount;
750 unsigned int blocksize = DFLT_BLOCK_SIZE;
751 unsigned int framesize = DFLT_FRAME_SIZE;
752 unsigned int framecount = DFLT_FRAME_COUNT;
753 unsigned int qpairs = 1;
755 /* do some parameter checking */
760 * Walk arguments for configurable settings
762 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
763 pair = &kvlist->pairs[k_idx];
764 if (strstr(pair->key, ETH_AF_PACKET_NUM_Q_ARG) != NULL) {
765 qpairs = atoi(pair->value);
767 qpairs > RTE_PMD_AF_PACKET_MAX_RINGS) {
769 "%s: invalid qpairs value\n",
775 if (strstr(pair->key, ETH_AF_PACKET_BLOCKSIZE_ARG) != NULL) {
776 blocksize = atoi(pair->value);
779 "%s: invalid blocksize value\n",
785 if (strstr(pair->key, ETH_AF_PACKET_FRAMESIZE_ARG) != NULL) {
786 framesize = atoi(pair->value);
789 "%s: invalid framesize value\n",
795 if (strstr(pair->key, ETH_AF_PACKET_FRAMECOUNT_ARG) != NULL) {
796 framecount = atoi(pair->value);
799 "%s: invalid framecount value\n",
807 if (framesize > blocksize) {
809 "%s: AF_PACKET MMAP frame size exceeds block size!\n",
814 blockcount = framecount / (blocksize / framesize);
817 "%s: invalid AF_PACKET MMAP parameters\n", name);
821 RTE_LOG(INFO, PMD, "%s: AF_PACKET MMAP parameters:\n", name);
822 RTE_LOG(INFO, PMD, "%s:\tblock size %d\n", name, blocksize);
823 RTE_LOG(INFO, PMD, "%s:\tblock count %d\n", name, blockcount);
824 RTE_LOG(INFO, PMD, "%s:\tframe size %d\n", name, framesize);
825 RTE_LOG(INFO, PMD, "%s:\tframe count %d\n", name, framecount);
827 if (rte_pmd_init_internals(name, *sockfd, qpairs,
828 blocksize, blockcount,
829 framesize, framecount,
830 numa_node, &internals, ð_dev,
834 eth_dev->rx_pkt_burst = eth_af_packet_rx;
835 eth_dev->tx_pkt_burst = eth_af_packet_tx;
841 rte_pmd_af_packet_probe(const char *name, const char *params)
845 struct rte_kvargs *kvlist;
848 RTE_LOG(INFO, PMD, "Initializing pmd_af_packet for %s\n", name);
850 numa_node = rte_socket_id();
852 kvlist = rte_kvargs_parse(params, valid_arguments);
853 if (kvlist == NULL) {
859 * If iface argument is passed we open the NICs and use them for
862 if (rte_kvargs_count(kvlist, ETH_AF_PACKET_IFACE_ARG) == 1) {
864 ret = rte_kvargs_process(kvlist, ETH_AF_PACKET_IFACE_ARG,
865 &open_packet_iface, &sockfd);
870 ret = rte_eth_from_packet(name, &sockfd, numa_node, kvlist);
871 close(sockfd); /* no longer needed */
874 rte_kvargs_free(kvlist);
879 rte_pmd_af_packet_remove(const char *name)
881 struct rte_eth_dev *eth_dev = NULL;
882 struct pmd_internals *internals;
885 RTE_LOG(INFO, PMD, "Closing AF_PACKET ethdev on numa socket %u\n",
891 /* find the ethdev entry */
892 eth_dev = rte_eth_dev_allocated(name);
896 internals = eth_dev->data->dev_private;
897 for (q = 0; q < internals->nb_queues; q++) {
898 rte_free(internals->rx_queue[q].rd);
899 rte_free(internals->tx_queue[q].rd);
902 rte_free(eth_dev->data->dev_private);
903 rte_free(eth_dev->data);
905 rte_eth_dev_release_port(eth_dev);
910 static struct rte_vdev_driver pmd_af_packet_drv = {
911 .probe = rte_pmd_af_packet_probe,
912 .remove = rte_pmd_af_packet_remove,
915 RTE_PMD_REGISTER_VDEV(net_af_packet, pmd_af_packet_drv);
916 RTE_PMD_REGISTER_ALIAS(net_af_packet, eth_af_packet);
917 RTE_PMD_REGISTER_PARAM_STRING(net_af_packet,