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_ethdev_vdev.h>
42 #include <rte_malloc.h>
43 #include <rte_kvargs.h>
46 #include <linux/if_ether.h>
47 #include <linux/if_packet.h>
48 #include <arpa/inet.h>
50 #include <sys/types.h>
51 #include <sys/socket.h>
52 #include <sys/ioctl.h>
57 #define ETH_AF_PACKET_IFACE_ARG "iface"
58 #define ETH_AF_PACKET_NUM_Q_ARG "qpairs"
59 #define ETH_AF_PACKET_BLOCKSIZE_ARG "blocksz"
60 #define ETH_AF_PACKET_FRAMESIZE_ARG "framesz"
61 #define ETH_AF_PACKET_FRAMECOUNT_ARG "framecnt"
63 #define DFLT_BLOCK_SIZE (1 << 12)
64 #define DFLT_FRAME_SIZE (1 << 11)
65 #define DFLT_FRAME_COUNT (1 << 9)
67 #define RTE_PMD_AF_PACKET_MAX_RINGS 16
74 unsigned int framecount;
75 unsigned int framenum;
77 struct rte_mempool *mb_pool;
80 volatile unsigned long rx_pkts;
81 volatile unsigned long err_pkts;
82 volatile unsigned long rx_bytes;
87 unsigned int frame_data_size;
91 unsigned int framecount;
92 unsigned int framenum;
94 volatile unsigned long tx_pkts;
95 volatile unsigned long err_pkts;
96 volatile unsigned long tx_bytes;
99 struct pmd_internals {
104 struct ether_addr eth_addr;
106 struct tpacket_req req;
108 struct pkt_rx_queue rx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
109 struct pkt_tx_queue tx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
112 static const char *valid_arguments[] = {
113 ETH_AF_PACKET_IFACE_ARG,
114 ETH_AF_PACKET_NUM_Q_ARG,
115 ETH_AF_PACKET_BLOCKSIZE_ARG,
116 ETH_AF_PACKET_FRAMESIZE_ARG,
117 ETH_AF_PACKET_FRAMECOUNT_ARG,
121 static struct rte_eth_link pmd_link = {
122 .link_speed = ETH_SPEED_NUM_10G,
123 .link_duplex = ETH_LINK_FULL_DUPLEX,
124 .link_status = ETH_LINK_DOWN,
125 .link_autoneg = ETH_LINK_SPEED_AUTONEG
129 eth_af_packet_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
132 struct tpacket2_hdr *ppd;
133 struct rte_mbuf *mbuf;
135 struct pkt_rx_queue *pkt_q = queue;
137 unsigned long num_rx_bytes = 0;
138 unsigned int framecount, framenum;
140 if (unlikely(nb_pkts == 0))
144 * Reads the given number of packets from the AF_PACKET socket one by
145 * one and copies the packet data into a newly allocated mbuf.
147 framecount = pkt_q->framecount;
148 framenum = pkt_q->framenum;
149 for (i = 0; i < nb_pkts; i++) {
150 /* point at the next incoming frame */
151 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
152 if ((ppd->tp_status & TP_STATUS_USER) == 0)
155 /* allocate the next mbuf */
156 mbuf = rte_pktmbuf_alloc(pkt_q->mb_pool);
157 if (unlikely(mbuf == NULL))
160 /* packet will fit in the mbuf, go ahead and receive it */
161 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf) = ppd->tp_snaplen;
162 pbuf = (uint8_t *) ppd + ppd->tp_mac;
163 memcpy(rte_pktmbuf_mtod(mbuf, void *), pbuf, rte_pktmbuf_data_len(mbuf));
165 /* check for vlan info */
166 if (ppd->tp_status & TP_STATUS_VLAN_VALID) {
167 mbuf->vlan_tci = ppd->tp_vlan_tci;
168 mbuf->ol_flags |= (PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED);
171 /* release incoming frame and advance ring buffer */
172 ppd->tp_status = TP_STATUS_KERNEL;
173 if (++framenum >= framecount)
175 mbuf->port = pkt_q->in_port;
177 /* account for the receive frame */
180 num_rx_bytes += mbuf->pkt_len;
182 pkt_q->framenum = framenum;
183 pkt_q->rx_pkts += num_rx;
184 pkt_q->rx_bytes += num_rx_bytes;
189 * Callback to handle sending packets through a real NIC.
192 eth_af_packet_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
194 struct tpacket2_hdr *ppd;
195 struct rte_mbuf *mbuf;
197 unsigned int framecount, framenum;
199 struct pkt_tx_queue *pkt_q = queue;
201 unsigned long num_tx_bytes = 0;
204 if (unlikely(nb_pkts == 0))
207 memset(&pfd, 0, sizeof(pfd));
208 pfd.fd = pkt_q->sockfd;
209 pfd.events = POLLOUT;
212 framecount = pkt_q->framecount;
213 framenum = pkt_q->framenum;
214 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
215 for (i = 0; i < nb_pkts; i++) {
218 /* drop oversized packets */
219 if (rte_pktmbuf_data_len(mbuf) > pkt_q->frame_data_size) {
220 rte_pktmbuf_free(mbuf);
224 /* insert vlan info if necessary */
225 if (mbuf->ol_flags & PKT_TX_VLAN_PKT) {
226 if (rte_vlan_insert(&mbuf)) {
227 rte_pktmbuf_free(mbuf);
232 /* point at the next incoming frame */
233 if ((ppd->tp_status != TP_STATUS_AVAILABLE) &&
234 (poll(&pfd, 1, -1) < 0))
237 /* copy the tx frame data */
238 pbuf = (uint8_t *) ppd + TPACKET2_HDRLEN -
239 sizeof(struct sockaddr_ll);
240 memcpy(pbuf, rte_pktmbuf_mtod(mbuf, void*), rte_pktmbuf_data_len(mbuf));
241 ppd->tp_len = ppd->tp_snaplen = rte_pktmbuf_data_len(mbuf);
243 /* release incoming frame and advance ring buffer */
244 ppd->tp_status = TP_STATUS_SEND_REQUEST;
245 if (++framenum >= framecount)
247 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
250 num_tx_bytes += mbuf->pkt_len;
251 rte_pktmbuf_free(mbuf);
254 /* kick-off transmits */
255 if (sendto(pkt_q->sockfd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1)
256 num_tx = 0; /* error sending -- no packets transmitted */
258 pkt_q->framenum = framenum;
259 pkt_q->tx_pkts += num_tx;
260 pkt_q->err_pkts += i - num_tx;
261 pkt_q->tx_bytes += num_tx_bytes;
266 eth_dev_start(struct rte_eth_dev *dev)
268 dev->data->dev_link.link_status = ETH_LINK_UP;
273 * This function gets called when the current port gets stopped.
276 eth_dev_stop(struct rte_eth_dev *dev)
280 struct pmd_internals *internals = dev->data->dev_private;
282 for (i = 0; i < internals->nb_queues; i++) {
283 sockfd = internals->rx_queue[i].sockfd;
287 /* Prevent use after free in case tx fd == rx fd */
288 if (sockfd != internals->tx_queue[i].sockfd) {
289 sockfd = internals->tx_queue[i].sockfd;
294 internals->rx_queue[i].sockfd = -1;
295 internals->tx_queue[i].sockfd = -1;
298 dev->data->dev_link.link_status = ETH_LINK_DOWN;
302 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
308 eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
310 struct pmd_internals *internals = dev->data->dev_private;
312 dev_info->if_index = internals->if_index;
313 dev_info->max_mac_addrs = 1;
314 dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN;
315 dev_info->max_rx_queues = (uint16_t)internals->nb_queues;
316 dev_info->max_tx_queues = (uint16_t)internals->nb_queues;
317 dev_info->min_rx_bufsize = 0;
321 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
324 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
325 unsigned long rx_bytes_total = 0, tx_bytes_total = 0;
326 const struct pmd_internals *internal = dev->data->dev_private;
328 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
329 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
330 for (i = 0; i < imax; i++) {
331 igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
332 igb_stats->q_ibytes[i] = internal->rx_queue[i].rx_bytes;
333 rx_total += igb_stats->q_ipackets[i];
334 rx_bytes_total += igb_stats->q_ibytes[i];
337 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
338 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
339 for (i = 0; i < imax; i++) {
340 igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
341 igb_stats->q_errors[i] = internal->tx_queue[i].err_pkts;
342 igb_stats->q_obytes[i] = internal->tx_queue[i].tx_bytes;
343 tx_total += igb_stats->q_opackets[i];
344 tx_err_total += igb_stats->q_errors[i];
345 tx_bytes_total += igb_stats->q_obytes[i];
348 igb_stats->ipackets = rx_total;
349 igb_stats->ibytes = rx_bytes_total;
350 igb_stats->opackets = tx_total;
351 igb_stats->oerrors = tx_err_total;
352 igb_stats->obytes = tx_bytes_total;
356 eth_stats_reset(struct rte_eth_dev *dev)
359 struct pmd_internals *internal = dev->data->dev_private;
361 for (i = 0; i < internal->nb_queues; i++) {
362 internal->rx_queue[i].rx_pkts = 0;
363 internal->rx_queue[i].rx_bytes = 0;
366 for (i = 0; i < internal->nb_queues; i++) {
367 internal->tx_queue[i].tx_pkts = 0;
368 internal->tx_queue[i].err_pkts = 0;
369 internal->tx_queue[i].tx_bytes = 0;
374 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
379 eth_queue_release(void *q __rte_unused)
384 eth_link_update(struct rte_eth_dev *dev __rte_unused,
385 int wait_to_complete __rte_unused)
391 eth_rx_queue_setup(struct rte_eth_dev *dev,
392 uint16_t rx_queue_id,
393 uint16_t nb_rx_desc __rte_unused,
394 unsigned int socket_id __rte_unused,
395 const struct rte_eth_rxconf *rx_conf __rte_unused,
396 struct rte_mempool *mb_pool)
398 struct pmd_internals *internals = dev->data->dev_private;
399 struct pkt_rx_queue *pkt_q = &internals->rx_queue[rx_queue_id];
400 unsigned int buf_size, data_size;
402 pkt_q->mb_pool = mb_pool;
404 /* Now get the space available for data in the mbuf */
405 buf_size = rte_pktmbuf_data_room_size(pkt_q->mb_pool) -
406 RTE_PKTMBUF_HEADROOM;
407 data_size = internals->req.tp_frame_size;
408 data_size -= TPACKET2_HDRLEN - sizeof(struct sockaddr_ll);
410 if (data_size > buf_size) {
412 "%s: %d bytes will not fit in mbuf (%d bytes)\n",
413 dev->data->name, data_size, buf_size);
417 dev->data->rx_queues[rx_queue_id] = pkt_q;
418 pkt_q->in_port = dev->data->port_id;
424 eth_tx_queue_setup(struct rte_eth_dev *dev,
425 uint16_t tx_queue_id,
426 uint16_t nb_tx_desc __rte_unused,
427 unsigned int socket_id __rte_unused,
428 const struct rte_eth_txconf *tx_conf __rte_unused)
431 struct pmd_internals *internals = dev->data->dev_private;
433 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
438 eth_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
440 struct pmd_internals *internals = dev->data->dev_private;
441 struct ifreq ifr = { .ifr_mtu = mtu };
444 unsigned int data_size = internals->req.tp_frame_size -
446 sizeof(struct sockaddr_ll);
451 s = socket(PF_INET, SOCK_DGRAM, 0);
455 strncpy(ifr.ifr_name, internals->if_name, IFNAMSIZ);
456 ret = ioctl(s, SIOCSIFMTU, &ifr);
466 eth_dev_change_flags(char *if_name, uint32_t flags, uint32_t mask)
471 s = socket(PF_INET, SOCK_DGRAM, 0);
475 strncpy(ifr.ifr_name, if_name, IFNAMSIZ);
476 if (ioctl(s, SIOCGIFFLAGS, &ifr) < 0)
478 ifr.ifr_flags &= mask;
479 ifr.ifr_flags |= flags;
480 if (ioctl(s, SIOCSIFFLAGS, &ifr) < 0)
487 eth_dev_promiscuous_enable(struct rte_eth_dev *dev)
489 struct pmd_internals *internals = dev->data->dev_private;
491 eth_dev_change_flags(internals->if_name, IFF_PROMISC, ~0);
495 eth_dev_promiscuous_disable(struct rte_eth_dev *dev)
497 struct pmd_internals *internals = dev->data->dev_private;
499 eth_dev_change_flags(internals->if_name, 0, ~IFF_PROMISC);
502 static const struct eth_dev_ops ops = {
503 .dev_start = eth_dev_start,
504 .dev_stop = eth_dev_stop,
505 .dev_close = eth_dev_close,
506 .dev_configure = eth_dev_configure,
507 .dev_infos_get = eth_dev_info,
508 .mtu_set = eth_dev_mtu_set,
509 .promiscuous_enable = eth_dev_promiscuous_enable,
510 .promiscuous_disable = eth_dev_promiscuous_disable,
511 .rx_queue_setup = eth_rx_queue_setup,
512 .tx_queue_setup = eth_tx_queue_setup,
513 .rx_queue_release = eth_queue_release,
514 .tx_queue_release = eth_queue_release,
515 .link_update = eth_link_update,
516 .stats_get = eth_stats_get,
517 .stats_reset = eth_stats_reset,
521 * Opens an AF_PACKET socket
524 open_packet_iface(const char *key __rte_unused,
525 const char *value __rte_unused,
528 int *sockfd = extra_args;
530 /* Open an AF_PACKET socket... */
531 *sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
533 RTE_LOG(ERR, PMD, "Could not open AF_PACKET socket\n");
540 static struct rte_vdev_driver pmd_af_packet_drv;
543 rte_pmd_init_internals(struct rte_vdev_device *dev,
545 const unsigned nb_queues,
546 unsigned int blocksize,
547 unsigned int blockcnt,
548 unsigned int framesize,
549 unsigned int framecnt,
550 struct pmd_internals **internals,
551 struct rte_eth_dev **eth_dev,
552 struct rte_kvargs *kvlist)
554 const char *name = rte_vdev_device_name(dev);
555 const unsigned int numa_node = dev->device.numa_node;
556 struct rte_eth_dev_data *data = NULL;
557 struct rte_kvargs_pair *pair = NULL;
561 struct sockaddr_ll sockaddr;
562 struct tpacket_req *req;
563 struct pkt_rx_queue *rx_queue;
564 struct pkt_tx_queue *tx_queue;
565 int rc, tpver, discard;
567 unsigned int i, q, rdsize;
568 int fanout_arg __rte_unused, bypass __rte_unused;
570 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
571 pair = &kvlist->pairs[k_idx];
572 if (strstr(pair->key, ETH_AF_PACKET_IFACE_ARG) != NULL)
577 "%s: no interface specified for AF_PACKET ethdev\n",
583 "%s: creating AF_PACKET-backed ethdev on numa socket %u\n",
587 * now do all data allocation - for eth_dev structure, dummy pci driver
588 * and internal (private) data
590 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
594 *internals = rte_zmalloc_socket(name, sizeof(**internals),
596 if (*internals == NULL)
599 for (q = 0; q < nb_queues; q++) {
600 (*internals)->rx_queue[q].map = MAP_FAILED;
601 (*internals)->tx_queue[q].map = MAP_FAILED;
604 req = &((*internals)->req);
606 req->tp_block_size = blocksize;
607 req->tp_block_nr = blockcnt;
608 req->tp_frame_size = framesize;
609 req->tp_frame_nr = framecnt;
611 ifnamelen = strlen(pair->value);
612 if (ifnamelen < sizeof(ifr.ifr_name)) {
613 memcpy(ifr.ifr_name, pair->value, ifnamelen);
614 ifr.ifr_name[ifnamelen] = '\0';
617 "%s: I/F name too long (%s)\n",
621 if (ioctl(sockfd, SIOCGIFINDEX, &ifr) == -1) {
623 "%s: ioctl failed (SIOCGIFINDEX)\n",
627 (*internals)->if_name = strdup(pair->value);
628 (*internals)->if_index = ifr.ifr_ifindex;
630 if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) == -1) {
632 "%s: ioctl failed (SIOCGIFHWADDR)\n",
636 memcpy(&(*internals)->eth_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
638 memset(&sockaddr, 0, sizeof(sockaddr));
639 sockaddr.sll_family = AF_PACKET;
640 sockaddr.sll_protocol = htons(ETH_P_ALL);
641 sockaddr.sll_ifindex = (*internals)->if_index;
643 #if defined(PACKET_FANOUT)
644 fanout_arg = (getpid() ^ (*internals)->if_index) & 0xffff;
645 fanout_arg |= (PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_DEFRAG) << 16;
646 #if defined(PACKET_FANOUT_FLAG_ROLLOVER)
647 fanout_arg |= PACKET_FANOUT_FLAG_ROLLOVER << 16;
651 for (q = 0; q < nb_queues; q++) {
652 /* Open an AF_PACKET socket for this queue... */
653 qsockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
656 "%s: could not open AF_PACKET socket\n",
662 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_VERSION,
663 &tpver, sizeof(tpver));
666 "%s: could not set PACKET_VERSION on AF_PACKET "
667 "socket for %s\n", name, pair->value);
672 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_LOSS,
673 &discard, sizeof(discard));
676 "%s: could not set PACKET_LOSS on "
677 "AF_PACKET socket for %s\n", name, pair->value);
681 #if defined(PACKET_QDISC_BYPASS)
683 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS,
684 &bypass, sizeof(bypass));
687 "%s: could not set PACKET_QDISC_BYPASS "
688 "on AF_PACKET socket for %s\n", name,
694 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_RX_RING, req, sizeof(*req));
697 "%s: could not set PACKET_RX_RING on AF_PACKET "
698 "socket for %s\n", name, pair->value);
702 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_TX_RING, req, sizeof(*req));
705 "%s: could not set PACKET_TX_RING on AF_PACKET "
706 "socket for %s\n", name, pair->value);
710 rx_queue = &((*internals)->rx_queue[q]);
711 rx_queue->framecount = req->tp_frame_nr;
713 rx_queue->map = mmap(NULL, 2 * req->tp_block_size * req->tp_block_nr,
714 PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED,
716 if (rx_queue->map == MAP_FAILED) {
718 "%s: call to mmap failed on AF_PACKET socket for %s\n",
723 /* rdsize is same for both Tx and Rx */
724 rdsize = req->tp_frame_nr * sizeof(*(rx_queue->rd));
726 rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
727 if (rx_queue->rd == NULL)
729 for (i = 0; i < req->tp_frame_nr; ++i) {
730 rx_queue->rd[i].iov_base = rx_queue->map + (i * framesize);
731 rx_queue->rd[i].iov_len = req->tp_frame_size;
733 rx_queue->sockfd = qsockfd;
735 tx_queue = &((*internals)->tx_queue[q]);
736 tx_queue->framecount = req->tp_frame_nr;
737 tx_queue->frame_data_size = req->tp_frame_size;
738 tx_queue->frame_data_size -= TPACKET2_HDRLEN -
739 sizeof(struct sockaddr_ll);
741 tx_queue->map = rx_queue->map + req->tp_block_size * req->tp_block_nr;
743 tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
744 if (tx_queue->rd == NULL)
746 for (i = 0; i < req->tp_frame_nr; ++i) {
747 tx_queue->rd[i].iov_base = tx_queue->map + (i * framesize);
748 tx_queue->rd[i].iov_len = req->tp_frame_size;
750 tx_queue->sockfd = qsockfd;
752 rc = bind(qsockfd, (const struct sockaddr*)&sockaddr, sizeof(sockaddr));
755 "%s: could not bind AF_PACKET socket to %s\n",
760 #if defined(PACKET_FANOUT)
761 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_FANOUT,
762 &fanout_arg, sizeof(fanout_arg));
765 "%s: could not set PACKET_FANOUT on AF_PACKET socket "
766 "for %s\n", name, pair->value);
772 /* reserve an ethdev entry */
773 *eth_dev = rte_eth_vdev_allocate(dev, 0);
774 if (*eth_dev == NULL)
778 * now put it all together
779 * - store queue data in internals,
780 * - store numa_node in eth_dev
781 * - point eth_dev_data to internals
782 * - and point eth_dev structure to new eth_dev_data structure
785 (*internals)->nb_queues = nb_queues;
787 rte_memcpy(data, (*eth_dev)->data, sizeof(*data));
788 data->dev_private = *internals;
789 data->nb_rx_queues = (uint16_t)nb_queues;
790 data->nb_tx_queues = (uint16_t)nb_queues;
791 data->dev_link = pmd_link;
792 data->mac_addrs = &(*internals)->eth_addr;
794 (*eth_dev)->data = data;
795 (*eth_dev)->dev_ops = &ops;
796 (*eth_dev)->data->dev_flags = RTE_ETH_DEV_DETACHABLE;
803 for (q = 0; q < nb_queues; q++) {
804 munmap((*internals)->rx_queue[q].map,
805 2 * req->tp_block_size * req->tp_block_nr);
807 rte_free((*internals)->rx_queue[q].rd);
808 rte_free((*internals)->tx_queue[q].rd);
809 if (((*internals)->rx_queue[q].sockfd != 0) &&
810 ((*internals)->rx_queue[q].sockfd != qsockfd))
811 close((*internals)->rx_queue[q].sockfd);
813 free((*internals)->if_name);
814 rte_free(*internals);
821 rte_eth_from_packet(struct rte_vdev_device *dev,
823 struct rte_kvargs *kvlist)
825 const char *name = rte_vdev_device_name(dev);
826 struct pmd_internals *internals = NULL;
827 struct rte_eth_dev *eth_dev = NULL;
828 struct rte_kvargs_pair *pair = NULL;
830 unsigned int blockcount;
831 unsigned int blocksize = DFLT_BLOCK_SIZE;
832 unsigned int framesize = DFLT_FRAME_SIZE;
833 unsigned int framecount = DFLT_FRAME_COUNT;
834 unsigned int qpairs = 1;
836 /* do some parameter checking */
841 * Walk arguments for configurable settings
843 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
844 pair = &kvlist->pairs[k_idx];
845 if (strstr(pair->key, ETH_AF_PACKET_NUM_Q_ARG) != NULL) {
846 qpairs = atoi(pair->value);
848 qpairs > RTE_PMD_AF_PACKET_MAX_RINGS) {
850 "%s: invalid qpairs value\n",
856 if (strstr(pair->key, ETH_AF_PACKET_BLOCKSIZE_ARG) != NULL) {
857 blocksize = atoi(pair->value);
860 "%s: invalid blocksize value\n",
866 if (strstr(pair->key, ETH_AF_PACKET_FRAMESIZE_ARG) != NULL) {
867 framesize = atoi(pair->value);
870 "%s: invalid framesize value\n",
876 if (strstr(pair->key, ETH_AF_PACKET_FRAMECOUNT_ARG) != NULL) {
877 framecount = atoi(pair->value);
880 "%s: invalid framecount value\n",
888 if (framesize > blocksize) {
890 "%s: AF_PACKET MMAP frame size exceeds block size!\n",
895 blockcount = framecount / (blocksize / framesize);
898 "%s: invalid AF_PACKET MMAP parameters\n", name);
902 RTE_LOG(INFO, PMD, "%s: AF_PACKET MMAP parameters:\n", name);
903 RTE_LOG(INFO, PMD, "%s:\tblock size %d\n", name, blocksize);
904 RTE_LOG(INFO, PMD, "%s:\tblock count %d\n", name, blockcount);
905 RTE_LOG(INFO, PMD, "%s:\tframe size %d\n", name, framesize);
906 RTE_LOG(INFO, PMD, "%s:\tframe count %d\n", name, framecount);
908 if (rte_pmd_init_internals(dev, *sockfd, qpairs,
909 blocksize, blockcount,
910 framesize, framecount,
911 &internals, ð_dev,
915 eth_dev->rx_pkt_burst = eth_af_packet_rx;
916 eth_dev->tx_pkt_burst = eth_af_packet_tx;
922 rte_pmd_af_packet_probe(struct rte_vdev_device *dev)
925 struct rte_kvargs *kvlist;
928 RTE_LOG(INFO, PMD, "Initializing pmd_af_packet for %s\n",
929 rte_vdev_device_name(dev));
931 kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_arguments);
932 if (kvlist == NULL) {
938 * If iface argument is passed we open the NICs and use them for
941 if (rte_kvargs_count(kvlist, ETH_AF_PACKET_IFACE_ARG) == 1) {
943 ret = rte_kvargs_process(kvlist, ETH_AF_PACKET_IFACE_ARG,
944 &open_packet_iface, &sockfd);
949 if (dev->device.numa_node == SOCKET_ID_ANY)
950 dev->device.numa_node = rte_socket_id();
952 ret = rte_eth_from_packet(dev, &sockfd, kvlist);
953 close(sockfd); /* no longer needed */
956 rte_kvargs_free(kvlist);
961 rte_pmd_af_packet_remove(struct rte_vdev_device *dev)
963 struct rte_eth_dev *eth_dev = NULL;
964 struct pmd_internals *internals;
967 RTE_LOG(INFO, PMD, "Closing AF_PACKET ethdev on numa socket %u\n",
973 /* find the ethdev entry */
974 eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
978 internals = eth_dev->data->dev_private;
979 for (q = 0; q < internals->nb_queues; q++) {
980 rte_free(internals->rx_queue[q].rd);
981 rte_free(internals->tx_queue[q].rd);
983 free(internals->if_name);
985 rte_free(eth_dev->data->dev_private);
986 rte_free(eth_dev->data);
988 rte_eth_dev_release_port(eth_dev);
993 static struct rte_vdev_driver pmd_af_packet_drv = {
994 .probe = rte_pmd_af_packet_probe,
995 .remove = rte_pmd_af_packet_remove,
998 RTE_PMD_REGISTER_VDEV(net_af_packet, pmd_af_packet_drv);
999 RTE_PMD_REGISTER_ALIAS(net_af_packet, eth_af_packet);
1000 RTE_PMD_REGISTER_PARAM_STRING(net_af_packet,