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 {
103 struct ether_addr eth_addr;
105 struct tpacket_req req;
107 struct pkt_rx_queue rx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
108 struct pkt_tx_queue tx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
111 static const char *valid_arguments[] = {
112 ETH_AF_PACKET_IFACE_ARG,
113 ETH_AF_PACKET_NUM_Q_ARG,
114 ETH_AF_PACKET_BLOCKSIZE_ARG,
115 ETH_AF_PACKET_FRAMESIZE_ARG,
116 ETH_AF_PACKET_FRAMECOUNT_ARG,
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_SPEED_AUTONEG
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++) {
211 /* drop oversized packets */
212 if (rte_pktmbuf_data_len(mbuf) > pkt_q->frame_data_size) {
213 rte_pktmbuf_free(mbuf);
217 /* point at the next incoming frame */
218 if ((ppd->tp_status != TP_STATUS_AVAILABLE) &&
219 (poll(&pfd, 1, -1) < 0))
222 /* copy the tx frame data */
223 pbuf = (uint8_t *) ppd + TPACKET2_HDRLEN -
224 sizeof(struct sockaddr_ll);
225 memcpy(pbuf, rte_pktmbuf_mtod(mbuf, void*), rte_pktmbuf_data_len(mbuf));
226 ppd->tp_len = ppd->tp_snaplen = rte_pktmbuf_data_len(mbuf);
228 /* release incoming frame and advance ring buffer */
229 ppd->tp_status = TP_STATUS_SEND_REQUEST;
230 if (++framenum >= framecount)
232 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
235 num_tx_bytes += mbuf->pkt_len;
236 rte_pktmbuf_free(mbuf);
239 /* kick-off transmits */
240 if (sendto(pkt_q->sockfd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1)
241 num_tx = 0; /* error sending -- no packets transmitted */
243 pkt_q->framenum = framenum;
244 pkt_q->tx_pkts += num_tx;
245 pkt_q->err_pkts += i - num_tx;
246 pkt_q->tx_bytes += num_tx_bytes;
251 eth_dev_start(struct rte_eth_dev *dev)
253 dev->data->dev_link.link_status = ETH_LINK_UP;
258 * This function gets called when the current port gets stopped.
261 eth_dev_stop(struct rte_eth_dev *dev)
265 struct pmd_internals *internals = dev->data->dev_private;
267 for (i = 0; i < internals->nb_queues; i++) {
268 sockfd = internals->rx_queue[i].sockfd;
272 /* Prevent use after free in case tx fd == rx fd */
273 if (sockfd != internals->tx_queue[i].sockfd) {
274 sockfd = internals->tx_queue[i].sockfd;
279 internals->rx_queue[i].sockfd = -1;
280 internals->tx_queue[i].sockfd = -1;
283 dev->data->dev_link.link_status = ETH_LINK_DOWN;
287 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
293 eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
295 struct pmd_internals *internals = dev->data->dev_private;
297 dev_info->if_index = internals->if_index;
298 dev_info->max_mac_addrs = 1;
299 dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN;
300 dev_info->max_rx_queues = (uint16_t)internals->nb_queues;
301 dev_info->max_tx_queues = (uint16_t)internals->nb_queues;
302 dev_info->min_rx_bufsize = 0;
306 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
309 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
310 unsigned long rx_bytes_total = 0, tx_bytes_total = 0;
311 const struct pmd_internals *internal = dev->data->dev_private;
313 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
314 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
315 for (i = 0; i < imax; i++) {
316 igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
317 igb_stats->q_ibytes[i] = internal->rx_queue[i].rx_bytes;
318 rx_total += igb_stats->q_ipackets[i];
319 rx_bytes_total += igb_stats->q_ibytes[i];
322 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
323 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
324 for (i = 0; i < imax; i++) {
325 igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
326 igb_stats->q_errors[i] = internal->tx_queue[i].err_pkts;
327 igb_stats->q_obytes[i] = internal->tx_queue[i].tx_bytes;
328 tx_total += igb_stats->q_opackets[i];
329 tx_err_total += igb_stats->q_errors[i];
330 tx_bytes_total += igb_stats->q_obytes[i];
333 igb_stats->ipackets = rx_total;
334 igb_stats->ibytes = rx_bytes_total;
335 igb_stats->opackets = tx_total;
336 igb_stats->oerrors = tx_err_total;
337 igb_stats->obytes = tx_bytes_total;
341 eth_stats_reset(struct rte_eth_dev *dev)
344 struct pmd_internals *internal = dev->data->dev_private;
346 for (i = 0; i < internal->nb_queues; i++) {
347 internal->rx_queue[i].rx_pkts = 0;
348 internal->rx_queue[i].rx_bytes = 0;
351 for (i = 0; i < internal->nb_queues; i++) {
352 internal->tx_queue[i].tx_pkts = 0;
353 internal->tx_queue[i].err_pkts = 0;
354 internal->tx_queue[i].tx_bytes = 0;
359 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
364 eth_queue_release(void *q __rte_unused)
369 eth_link_update(struct rte_eth_dev *dev __rte_unused,
370 int wait_to_complete __rte_unused)
376 eth_rx_queue_setup(struct rte_eth_dev *dev,
377 uint16_t rx_queue_id,
378 uint16_t nb_rx_desc __rte_unused,
379 unsigned int socket_id __rte_unused,
380 const struct rte_eth_rxconf *rx_conf __rte_unused,
381 struct rte_mempool *mb_pool)
383 struct pmd_internals *internals = dev->data->dev_private;
384 struct pkt_rx_queue *pkt_q = &internals->rx_queue[rx_queue_id];
385 unsigned int buf_size, data_size;
387 pkt_q->mb_pool = mb_pool;
389 /* Now get the space available for data in the mbuf */
390 buf_size = rte_pktmbuf_data_room_size(pkt_q->mb_pool) -
391 RTE_PKTMBUF_HEADROOM;
392 data_size = internals->req.tp_frame_size;
393 data_size -= TPACKET2_HDRLEN - sizeof(struct sockaddr_ll);
395 if (data_size > buf_size) {
397 "%s: %d bytes will not fit in mbuf (%d bytes)\n",
398 dev->data->name, data_size, buf_size);
402 dev->data->rx_queues[rx_queue_id] = pkt_q;
403 pkt_q->in_port = dev->data->port_id;
409 eth_tx_queue_setup(struct rte_eth_dev *dev,
410 uint16_t tx_queue_id,
411 uint16_t nb_tx_desc __rte_unused,
412 unsigned int socket_id __rte_unused,
413 const struct rte_eth_txconf *tx_conf __rte_unused)
416 struct pmd_internals *internals = dev->data->dev_private;
418 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
422 static const struct eth_dev_ops ops = {
423 .dev_start = eth_dev_start,
424 .dev_stop = eth_dev_stop,
425 .dev_close = eth_dev_close,
426 .dev_configure = eth_dev_configure,
427 .dev_infos_get = eth_dev_info,
428 .rx_queue_setup = eth_rx_queue_setup,
429 .tx_queue_setup = eth_tx_queue_setup,
430 .rx_queue_release = eth_queue_release,
431 .tx_queue_release = eth_queue_release,
432 .link_update = eth_link_update,
433 .stats_get = eth_stats_get,
434 .stats_reset = eth_stats_reset,
438 * Opens an AF_PACKET socket
441 open_packet_iface(const char *key __rte_unused,
442 const char *value __rte_unused,
445 int *sockfd = extra_args;
447 /* Open an AF_PACKET socket... */
448 *sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
450 RTE_LOG(ERR, PMD, "Could not open AF_PACKET socket\n");
457 static struct rte_vdev_driver pmd_af_packet_drv;
460 rte_pmd_init_internals(const char *name,
462 const unsigned nb_queues,
463 unsigned int blocksize,
464 unsigned int blockcnt,
465 unsigned int framesize,
466 unsigned int framecnt,
467 const unsigned numa_node,
468 struct pmd_internals **internals,
469 struct rte_eth_dev **eth_dev,
470 struct rte_kvargs *kvlist)
472 struct rte_eth_dev_data *data = NULL;
473 struct rte_kvargs_pair *pair = NULL;
477 struct sockaddr_ll sockaddr;
478 struct tpacket_req *req;
479 struct pkt_rx_queue *rx_queue;
480 struct pkt_tx_queue *tx_queue;
481 int rc, tpver, discard;
483 unsigned int i, q, rdsize;
484 int fanout_arg __rte_unused, bypass __rte_unused;
486 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
487 pair = &kvlist->pairs[k_idx];
488 if (strstr(pair->key, ETH_AF_PACKET_IFACE_ARG) != NULL)
493 "%s: no interface specified for AF_PACKET ethdev\n",
499 "%s: creating AF_PACKET-backed ethdev on numa socket %u\n",
503 * now do all data allocation - for eth_dev structure, dummy pci driver
504 * and internal (private) data
506 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
510 *internals = rte_zmalloc_socket(name, sizeof(**internals),
512 if (*internals == NULL)
515 for (q = 0; q < nb_queues; q++) {
516 (*internals)->rx_queue[q].map = MAP_FAILED;
517 (*internals)->tx_queue[q].map = MAP_FAILED;
520 req = &((*internals)->req);
522 req->tp_block_size = blocksize;
523 req->tp_block_nr = blockcnt;
524 req->tp_frame_size = framesize;
525 req->tp_frame_nr = framecnt;
527 ifnamelen = strlen(pair->value);
528 if (ifnamelen < sizeof(ifr.ifr_name)) {
529 memcpy(ifr.ifr_name, pair->value, ifnamelen);
530 ifr.ifr_name[ifnamelen] = '\0';
533 "%s: I/F name too long (%s)\n",
537 if (ioctl(sockfd, SIOCGIFINDEX, &ifr) == -1) {
539 "%s: ioctl failed (SIOCGIFINDEX)\n",
543 (*internals)->if_name = strdup(pair->value);
544 (*internals)->if_index = ifr.ifr_ifindex;
546 if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) == -1) {
548 "%s: ioctl failed (SIOCGIFHWADDR)\n",
552 memcpy(&(*internals)->eth_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
554 memset(&sockaddr, 0, sizeof(sockaddr));
555 sockaddr.sll_family = AF_PACKET;
556 sockaddr.sll_protocol = htons(ETH_P_ALL);
557 sockaddr.sll_ifindex = (*internals)->if_index;
559 #if defined(PACKET_FANOUT)
560 fanout_arg = (getpid() ^ (*internals)->if_index) & 0xffff;
561 fanout_arg |= (PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_DEFRAG) << 16;
562 #if defined(PACKET_FANOUT_FLAG_ROLLOVER)
563 fanout_arg |= PACKET_FANOUT_FLAG_ROLLOVER << 16;
567 for (q = 0; q < nb_queues; q++) {
568 /* Open an AF_PACKET socket for this queue... */
569 qsockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
572 "%s: could not open AF_PACKET socket\n",
578 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_VERSION,
579 &tpver, sizeof(tpver));
582 "%s: could not set PACKET_VERSION on AF_PACKET "
583 "socket for %s\n", name, pair->value);
588 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_LOSS,
589 &discard, sizeof(discard));
592 "%s: could not set PACKET_LOSS on "
593 "AF_PACKET socket for %s\n", name, pair->value);
597 #if defined(PACKET_QDISC_BYPASS)
599 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS,
600 &bypass, sizeof(bypass));
603 "%s: could not set PACKET_QDISC_BYPASS "
604 "on AF_PACKET socket for %s\n", name,
610 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_RX_RING, req, sizeof(*req));
613 "%s: could not set PACKET_RX_RING on AF_PACKET "
614 "socket for %s\n", name, pair->value);
618 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_TX_RING, req, sizeof(*req));
621 "%s: could not set PACKET_TX_RING on AF_PACKET "
622 "socket for %s\n", name, pair->value);
626 rx_queue = &((*internals)->rx_queue[q]);
627 rx_queue->framecount = req->tp_frame_nr;
629 rx_queue->map = mmap(NULL, 2 * req->tp_block_size * req->tp_block_nr,
630 PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED,
632 if (rx_queue->map == MAP_FAILED) {
634 "%s: call to mmap failed on AF_PACKET socket for %s\n",
639 /* rdsize is same for both Tx and Rx */
640 rdsize = req->tp_frame_nr * sizeof(*(rx_queue->rd));
642 rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
643 if (rx_queue->rd == NULL)
645 for (i = 0; i < req->tp_frame_nr; ++i) {
646 rx_queue->rd[i].iov_base = rx_queue->map + (i * framesize);
647 rx_queue->rd[i].iov_len = req->tp_frame_size;
649 rx_queue->sockfd = qsockfd;
651 tx_queue = &((*internals)->tx_queue[q]);
652 tx_queue->framecount = req->tp_frame_nr;
653 tx_queue->frame_data_size = req->tp_frame_size;
654 tx_queue->frame_data_size -= TPACKET2_HDRLEN -
655 sizeof(struct sockaddr_ll);
657 tx_queue->map = rx_queue->map + req->tp_block_size * req->tp_block_nr;
659 tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
660 if (tx_queue->rd == NULL)
662 for (i = 0; i < req->tp_frame_nr; ++i) {
663 tx_queue->rd[i].iov_base = tx_queue->map + (i * framesize);
664 tx_queue->rd[i].iov_len = req->tp_frame_size;
666 tx_queue->sockfd = qsockfd;
668 rc = bind(qsockfd, (const struct sockaddr*)&sockaddr, sizeof(sockaddr));
671 "%s: could not bind AF_PACKET socket to %s\n",
676 #if defined(PACKET_FANOUT)
677 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_FANOUT,
678 &fanout_arg, sizeof(fanout_arg));
681 "%s: could not set PACKET_FANOUT on AF_PACKET socket "
682 "for %s\n", name, pair->value);
688 /* reserve an ethdev entry */
689 *eth_dev = rte_eth_dev_allocate(name);
690 if (*eth_dev == NULL)
694 * now put it all together
695 * - store queue data in internals,
696 * - store numa_node in eth_dev
697 * - point eth_dev_data to internals
698 * - and point eth_dev structure to new eth_dev_data structure
701 (*internals)->nb_queues = nb_queues;
703 data->dev_private = *internals;
704 data->port_id = (*eth_dev)->data->port_id;
705 data->nb_rx_queues = (uint16_t)nb_queues;
706 data->nb_tx_queues = (uint16_t)nb_queues;
707 data->dev_link = pmd_link;
708 data->mac_addrs = &(*internals)->eth_addr;
710 (*eth_dev)->data->name, strlen((*eth_dev)->data->name));
712 (*eth_dev)->data = data;
713 (*eth_dev)->dev_ops = &ops;
714 (*eth_dev)->driver = NULL;
715 (*eth_dev)->data->dev_flags = RTE_ETH_DEV_DETACHABLE;
716 (*eth_dev)->data->drv_name = pmd_af_packet_drv.driver.name;
717 (*eth_dev)->data->kdrv = RTE_KDRV_NONE;
718 (*eth_dev)->data->numa_node = numa_node;
725 for (q = 0; q < nb_queues; q++) {
726 munmap((*internals)->rx_queue[q].map,
727 2 * req->tp_block_size * req->tp_block_nr);
729 rte_free((*internals)->rx_queue[q].rd);
730 rte_free((*internals)->tx_queue[q].rd);
731 if (((*internals)->rx_queue[q].sockfd != 0) &&
732 ((*internals)->rx_queue[q].sockfd != qsockfd))
733 close((*internals)->rx_queue[q].sockfd);
735 free((*internals)->if_name);
736 rte_free(*internals);
743 rte_eth_from_packet(const char *name,
745 const unsigned numa_node,
746 struct rte_kvargs *kvlist)
748 struct pmd_internals *internals = NULL;
749 struct rte_eth_dev *eth_dev = NULL;
750 struct rte_kvargs_pair *pair = NULL;
752 unsigned int blockcount;
753 unsigned int blocksize = DFLT_BLOCK_SIZE;
754 unsigned int framesize = DFLT_FRAME_SIZE;
755 unsigned int framecount = DFLT_FRAME_COUNT;
756 unsigned int qpairs = 1;
758 /* do some parameter checking */
763 * Walk arguments for configurable settings
765 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
766 pair = &kvlist->pairs[k_idx];
767 if (strstr(pair->key, ETH_AF_PACKET_NUM_Q_ARG) != NULL) {
768 qpairs = atoi(pair->value);
770 qpairs > RTE_PMD_AF_PACKET_MAX_RINGS) {
772 "%s: invalid qpairs value\n",
778 if (strstr(pair->key, ETH_AF_PACKET_BLOCKSIZE_ARG) != NULL) {
779 blocksize = atoi(pair->value);
782 "%s: invalid blocksize value\n",
788 if (strstr(pair->key, ETH_AF_PACKET_FRAMESIZE_ARG) != NULL) {
789 framesize = atoi(pair->value);
792 "%s: invalid framesize value\n",
798 if (strstr(pair->key, ETH_AF_PACKET_FRAMECOUNT_ARG) != NULL) {
799 framecount = atoi(pair->value);
802 "%s: invalid framecount value\n",
810 if (framesize > blocksize) {
812 "%s: AF_PACKET MMAP frame size exceeds block size!\n",
817 blockcount = framecount / (blocksize / framesize);
820 "%s: invalid AF_PACKET MMAP parameters\n", name);
824 RTE_LOG(INFO, PMD, "%s: AF_PACKET MMAP parameters:\n", name);
825 RTE_LOG(INFO, PMD, "%s:\tblock size %d\n", name, blocksize);
826 RTE_LOG(INFO, PMD, "%s:\tblock count %d\n", name, blockcount);
827 RTE_LOG(INFO, PMD, "%s:\tframe size %d\n", name, framesize);
828 RTE_LOG(INFO, PMD, "%s:\tframe count %d\n", name, framecount);
830 if (rte_pmd_init_internals(name, *sockfd, qpairs,
831 blocksize, blockcount,
832 framesize, framecount,
833 numa_node, &internals, ð_dev,
837 eth_dev->rx_pkt_burst = eth_af_packet_rx;
838 eth_dev->tx_pkt_burst = eth_af_packet_tx;
844 rte_pmd_af_packet_probe(const char *name, const char *params)
848 struct rte_kvargs *kvlist;
851 RTE_LOG(INFO, PMD, "Initializing pmd_af_packet for %s\n", name);
853 numa_node = rte_socket_id();
855 kvlist = rte_kvargs_parse(params, valid_arguments);
856 if (kvlist == NULL) {
862 * If iface argument is passed we open the NICs and use them for
865 if (rte_kvargs_count(kvlist, ETH_AF_PACKET_IFACE_ARG) == 1) {
867 ret = rte_kvargs_process(kvlist, ETH_AF_PACKET_IFACE_ARG,
868 &open_packet_iface, &sockfd);
873 ret = rte_eth_from_packet(name, &sockfd, numa_node, kvlist);
874 close(sockfd); /* no longer needed */
877 rte_kvargs_free(kvlist);
882 rte_pmd_af_packet_remove(const char *name)
884 struct rte_eth_dev *eth_dev = NULL;
885 struct pmd_internals *internals;
888 RTE_LOG(INFO, PMD, "Closing AF_PACKET ethdev on numa socket %u\n",
894 /* find the ethdev entry */
895 eth_dev = rte_eth_dev_allocated(name);
899 internals = eth_dev->data->dev_private;
900 for (q = 0; q < internals->nb_queues; q++) {
901 rte_free(internals->rx_queue[q].rd);
902 rte_free(internals->tx_queue[q].rd);
904 free(internals->if_name);
906 rte_free(eth_dev->data->dev_private);
907 rte_free(eth_dev->data);
909 rte_eth_dev_release_port(eth_dev);
914 static struct rte_vdev_driver pmd_af_packet_drv = {
915 .probe = rte_pmd_af_packet_probe,
916 .remove = rte_pmd_af_packet_remove,
919 RTE_PMD_REGISTER_VDEV(net_af_packet, pmd_af_packet_drv);
920 RTE_PMD_REGISTER_ALIAS(net_af_packet, eth_af_packet);
921 RTE_PMD_REGISTER_PARAM_STRING(net_af_packet,