1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2014 John W. Linville <linville@tuxdriver.com>
3 * Originally based upon librte_pmd_pcap code:
4 * Copyright(c) 2010-2015 Intel Corporation.
5 * Copyright(c) 2014 6WIND S.A.
10 #include <rte_ethdev_driver.h>
11 #include <rte_ethdev_vdev.h>
12 #include <rte_malloc.h>
13 #include <rte_kvargs.h>
14 #include <rte_bus_vdev.h>
16 #include <linux/if_ether.h>
17 #include <linux/if_packet.h>
18 #include <arpa/inet.h>
20 #include <sys/types.h>
21 #include <sys/socket.h>
22 #include <sys/ioctl.h>
27 #define ETH_AF_PACKET_IFACE_ARG "iface"
28 #define ETH_AF_PACKET_NUM_Q_ARG "qpairs"
29 #define ETH_AF_PACKET_BLOCKSIZE_ARG "blocksz"
30 #define ETH_AF_PACKET_FRAMESIZE_ARG "framesz"
31 #define ETH_AF_PACKET_FRAMECOUNT_ARG "framecnt"
32 #define ETH_AF_PACKET_QDISC_BYPASS_ARG "qdisc_bypass"
34 #define DFLT_BLOCK_SIZE (1 << 12)
35 #define DFLT_FRAME_SIZE (1 << 11)
36 #define DFLT_FRAME_COUNT (1 << 9)
38 #define RTE_PMD_AF_PACKET_MAX_RINGS 16
45 unsigned int framecount;
46 unsigned int framenum;
48 struct rte_mempool *mb_pool;
51 volatile unsigned long rx_pkts;
52 volatile unsigned long err_pkts;
53 volatile unsigned long rx_bytes;
58 unsigned int frame_data_size;
62 unsigned int framecount;
63 unsigned int framenum;
65 volatile unsigned long tx_pkts;
66 volatile unsigned long err_pkts;
67 volatile unsigned long tx_bytes;
70 struct pmd_internals {
75 struct ether_addr eth_addr;
77 struct tpacket_req req;
79 struct pkt_rx_queue rx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
80 struct pkt_tx_queue tx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
83 static const char *valid_arguments[] = {
84 ETH_AF_PACKET_IFACE_ARG,
85 ETH_AF_PACKET_NUM_Q_ARG,
86 ETH_AF_PACKET_BLOCKSIZE_ARG,
87 ETH_AF_PACKET_FRAMESIZE_ARG,
88 ETH_AF_PACKET_FRAMECOUNT_ARG,
89 ETH_AF_PACKET_QDISC_BYPASS_ARG,
93 static struct rte_eth_link pmd_link = {
94 .link_speed = ETH_SPEED_NUM_10G,
95 .link_duplex = ETH_LINK_FULL_DUPLEX,
96 .link_status = ETH_LINK_DOWN,
97 .link_autoneg = ETH_LINK_FIXED,
100 static int af_packet_logtype;
102 #define PMD_LOG(level, fmt, args...) \
103 rte_log(RTE_LOG_ ## level, af_packet_logtype, \
104 "%s(): " fmt "\n", __func__, ##args)
107 eth_af_packet_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
110 struct tpacket2_hdr *ppd;
111 struct rte_mbuf *mbuf;
113 struct pkt_rx_queue *pkt_q = queue;
115 unsigned long num_rx_bytes = 0;
116 unsigned int framecount, framenum;
118 if (unlikely(nb_pkts == 0))
122 * Reads the given number of packets from the AF_PACKET socket one by
123 * one and copies the packet data into a newly allocated mbuf.
125 framecount = pkt_q->framecount;
126 framenum = pkt_q->framenum;
127 for (i = 0; i < nb_pkts; i++) {
128 /* point at the next incoming frame */
129 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
130 if ((ppd->tp_status & TP_STATUS_USER) == 0)
133 /* allocate the next mbuf */
134 mbuf = rte_pktmbuf_alloc(pkt_q->mb_pool);
135 if (unlikely(mbuf == NULL))
138 /* packet will fit in the mbuf, go ahead and receive it */
139 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf) = ppd->tp_snaplen;
140 pbuf = (uint8_t *) ppd + ppd->tp_mac;
141 memcpy(rte_pktmbuf_mtod(mbuf, void *), pbuf, rte_pktmbuf_data_len(mbuf));
143 /* check for vlan info */
144 if (ppd->tp_status & TP_STATUS_VLAN_VALID) {
145 mbuf->vlan_tci = ppd->tp_vlan_tci;
146 mbuf->ol_flags |= (PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED);
149 /* release incoming frame and advance ring buffer */
150 ppd->tp_status = TP_STATUS_KERNEL;
151 if (++framenum >= framecount)
153 mbuf->port = pkt_q->in_port;
155 /* account for the receive frame */
158 num_rx_bytes += mbuf->pkt_len;
160 pkt_q->framenum = framenum;
161 pkt_q->rx_pkts += num_rx;
162 pkt_q->rx_bytes += num_rx_bytes;
167 * Callback to handle sending packets through a real NIC.
170 eth_af_packet_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
172 struct tpacket2_hdr *ppd;
173 struct rte_mbuf *mbuf;
175 unsigned int framecount, framenum;
177 struct pkt_tx_queue *pkt_q = queue;
179 unsigned long num_tx_bytes = 0;
182 if (unlikely(nb_pkts == 0))
185 memset(&pfd, 0, sizeof(pfd));
186 pfd.fd = pkt_q->sockfd;
187 pfd.events = POLLOUT;
190 framecount = pkt_q->framecount;
191 framenum = pkt_q->framenum;
192 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
193 for (i = 0; i < nb_pkts; i++) {
196 /* drop oversized packets */
197 if (mbuf->pkt_len > pkt_q->frame_data_size) {
198 rte_pktmbuf_free(mbuf);
202 /* insert vlan info if necessary */
203 if (mbuf->ol_flags & PKT_TX_VLAN_PKT) {
204 if (rte_vlan_insert(&mbuf)) {
205 rte_pktmbuf_free(mbuf);
210 /* point at the next incoming frame */
211 if ((ppd->tp_status != TP_STATUS_AVAILABLE) &&
212 (poll(&pfd, 1, -1) < 0))
215 /* copy the tx frame data */
216 pbuf = (uint8_t *) ppd + TPACKET2_HDRLEN -
217 sizeof(struct sockaddr_ll);
219 struct rte_mbuf *tmp_mbuf = mbuf;
221 uint16_t data_len = rte_pktmbuf_data_len(tmp_mbuf);
222 memcpy(pbuf, rte_pktmbuf_mtod(tmp_mbuf, void*), data_len);
224 tmp_mbuf = tmp_mbuf->next;
227 ppd->tp_len = mbuf->pkt_len;
228 ppd->tp_snaplen = mbuf->pkt_len;
230 /* release incoming frame and advance ring buffer */
231 ppd->tp_status = TP_STATUS_SEND_REQUEST;
232 if (++framenum >= framecount)
234 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
237 num_tx_bytes += mbuf->pkt_len;
238 rte_pktmbuf_free(mbuf);
241 /* kick-off transmits */
242 if (sendto(pkt_q->sockfd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1) {
243 /* error sending -- no packets transmitted */
248 pkt_q->framenum = framenum;
249 pkt_q->tx_pkts += num_tx;
250 pkt_q->err_pkts += i - num_tx;
251 pkt_q->tx_bytes += num_tx_bytes;
256 eth_dev_start(struct rte_eth_dev *dev)
258 dev->data->dev_link.link_status = ETH_LINK_UP;
263 * This function gets called when the current port gets stopped.
266 eth_dev_stop(struct rte_eth_dev *dev)
270 struct pmd_internals *internals = dev->data->dev_private;
272 for (i = 0; i < internals->nb_queues; i++) {
273 sockfd = internals->rx_queue[i].sockfd;
277 /* Prevent use after free in case tx fd == rx fd */
278 if (sockfd != internals->tx_queue[i].sockfd) {
279 sockfd = internals->tx_queue[i].sockfd;
284 internals->rx_queue[i].sockfd = -1;
285 internals->tx_queue[i].sockfd = -1;
288 dev->data->dev_link.link_status = ETH_LINK_DOWN;
292 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
298 eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
300 struct pmd_internals *internals = dev->data->dev_private;
302 dev_info->if_index = internals->if_index;
303 dev_info->max_mac_addrs = 1;
304 dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN;
305 dev_info->max_rx_queues = (uint16_t)internals->nb_queues;
306 dev_info->max_tx_queues = (uint16_t)internals->nb_queues;
307 dev_info->min_rx_bufsize = 0;
311 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
314 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
315 unsigned long rx_bytes_total = 0, tx_bytes_total = 0;
316 const struct pmd_internals *internal = dev->data->dev_private;
318 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
319 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
320 for (i = 0; i < imax; i++) {
321 igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
322 igb_stats->q_ibytes[i] = internal->rx_queue[i].rx_bytes;
323 rx_total += igb_stats->q_ipackets[i];
324 rx_bytes_total += igb_stats->q_ibytes[i];
327 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
328 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
329 for (i = 0; i < imax; i++) {
330 igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
331 igb_stats->q_errors[i] = internal->tx_queue[i].err_pkts;
332 igb_stats->q_obytes[i] = internal->tx_queue[i].tx_bytes;
333 tx_total += igb_stats->q_opackets[i];
334 tx_err_total += igb_stats->q_errors[i];
335 tx_bytes_total += igb_stats->q_obytes[i];
338 igb_stats->ipackets = rx_total;
339 igb_stats->ibytes = rx_bytes_total;
340 igb_stats->opackets = tx_total;
341 igb_stats->oerrors = tx_err_total;
342 igb_stats->obytes = tx_bytes_total;
347 eth_stats_reset(struct rte_eth_dev *dev)
350 struct pmd_internals *internal = dev->data->dev_private;
352 for (i = 0; i < internal->nb_queues; i++) {
353 internal->rx_queue[i].rx_pkts = 0;
354 internal->rx_queue[i].rx_bytes = 0;
357 for (i = 0; i < internal->nb_queues; i++) {
358 internal->tx_queue[i].tx_pkts = 0;
359 internal->tx_queue[i].err_pkts = 0;
360 internal->tx_queue[i].tx_bytes = 0;
365 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
370 eth_queue_release(void *q __rte_unused)
375 eth_link_update(struct rte_eth_dev *dev __rte_unused,
376 int wait_to_complete __rte_unused)
382 eth_rx_queue_setup(struct rte_eth_dev *dev,
383 uint16_t rx_queue_id,
384 uint16_t nb_rx_desc __rte_unused,
385 unsigned int socket_id __rte_unused,
386 const struct rte_eth_rxconf *rx_conf __rte_unused,
387 struct rte_mempool *mb_pool)
389 struct pmd_internals *internals = dev->data->dev_private;
390 struct pkt_rx_queue *pkt_q = &internals->rx_queue[rx_queue_id];
391 unsigned int buf_size, data_size;
393 pkt_q->mb_pool = mb_pool;
395 /* Now get the space available for data in the mbuf */
396 buf_size = rte_pktmbuf_data_room_size(pkt_q->mb_pool) -
397 RTE_PKTMBUF_HEADROOM;
398 data_size = internals->req.tp_frame_size;
399 data_size -= TPACKET2_HDRLEN - sizeof(struct sockaddr_ll);
401 if (data_size > buf_size) {
403 "%s: %d bytes will not fit in mbuf (%d bytes)",
404 dev->device->name, data_size, buf_size);
408 dev->data->rx_queues[rx_queue_id] = pkt_q;
409 pkt_q->in_port = dev->data->port_id;
415 eth_tx_queue_setup(struct rte_eth_dev *dev,
416 uint16_t tx_queue_id,
417 uint16_t nb_tx_desc __rte_unused,
418 unsigned int socket_id __rte_unused,
419 const struct rte_eth_txconf *tx_conf __rte_unused)
422 struct pmd_internals *internals = dev->data->dev_private;
424 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
429 eth_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
431 struct pmd_internals *internals = dev->data->dev_private;
432 struct ifreq ifr = { .ifr_mtu = mtu };
435 unsigned int data_size = internals->req.tp_frame_size -
437 sizeof(struct sockaddr_ll);
442 s = socket(PF_INET, SOCK_DGRAM, 0);
446 snprintf(ifr.ifr_name, IFNAMSIZ, "%s", internals->if_name);
447 ret = ioctl(s, SIOCSIFMTU, &ifr);
457 eth_dev_change_flags(char *if_name, uint32_t flags, uint32_t mask)
462 s = socket(PF_INET, SOCK_DGRAM, 0);
466 snprintf(ifr.ifr_name, IFNAMSIZ, "%s", if_name);
467 if (ioctl(s, SIOCGIFFLAGS, &ifr) < 0)
469 ifr.ifr_flags &= mask;
470 ifr.ifr_flags |= flags;
471 if (ioctl(s, SIOCSIFFLAGS, &ifr) < 0)
478 eth_dev_promiscuous_enable(struct rte_eth_dev *dev)
480 struct pmd_internals *internals = dev->data->dev_private;
482 eth_dev_change_flags(internals->if_name, IFF_PROMISC, ~0);
486 eth_dev_promiscuous_disable(struct rte_eth_dev *dev)
488 struct pmd_internals *internals = dev->data->dev_private;
490 eth_dev_change_flags(internals->if_name, 0, ~IFF_PROMISC);
493 static const struct eth_dev_ops ops = {
494 .dev_start = eth_dev_start,
495 .dev_stop = eth_dev_stop,
496 .dev_close = eth_dev_close,
497 .dev_configure = eth_dev_configure,
498 .dev_infos_get = eth_dev_info,
499 .mtu_set = eth_dev_mtu_set,
500 .promiscuous_enable = eth_dev_promiscuous_enable,
501 .promiscuous_disable = eth_dev_promiscuous_disable,
502 .rx_queue_setup = eth_rx_queue_setup,
503 .tx_queue_setup = eth_tx_queue_setup,
504 .rx_queue_release = eth_queue_release,
505 .tx_queue_release = eth_queue_release,
506 .link_update = eth_link_update,
507 .stats_get = eth_stats_get,
508 .stats_reset = eth_stats_reset,
512 * Opens an AF_PACKET socket
515 open_packet_iface(const char *key __rte_unused,
516 const char *value __rte_unused,
519 int *sockfd = extra_args;
521 /* Open an AF_PACKET socket... */
522 *sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
524 PMD_LOG(ERR, "Could not open AF_PACKET socket");
531 static struct rte_vdev_driver pmd_af_packet_drv;
534 rte_pmd_init_internals(struct rte_vdev_device *dev,
536 const unsigned nb_queues,
537 unsigned int blocksize,
538 unsigned int blockcnt,
539 unsigned int framesize,
540 unsigned int framecnt,
541 unsigned int qdisc_bypass,
542 struct pmd_internals **internals,
543 struct rte_eth_dev **eth_dev,
544 struct rte_kvargs *kvlist)
546 const char *name = rte_vdev_device_name(dev);
547 const unsigned int numa_node = dev->device.numa_node;
548 struct rte_eth_dev_data *data = NULL;
549 struct rte_kvargs_pair *pair = NULL;
553 struct sockaddr_ll sockaddr;
554 struct tpacket_req *req;
555 struct pkt_rx_queue *rx_queue;
556 struct pkt_tx_queue *tx_queue;
557 int rc, tpver, discard;
559 unsigned int i, q, rdsize;
560 #if defined(PACKET_FANOUT)
564 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
565 pair = &kvlist->pairs[k_idx];
566 if (strstr(pair->key, ETH_AF_PACKET_IFACE_ARG) != NULL)
571 "%s: no interface specified for AF_PACKET ethdev",
577 "%s: creating AF_PACKET-backed ethdev on numa socket %u",
580 *internals = rte_zmalloc_socket(name, sizeof(**internals),
582 if (*internals == NULL)
585 for (q = 0; q < nb_queues; q++) {
586 (*internals)->rx_queue[q].map = MAP_FAILED;
587 (*internals)->tx_queue[q].map = MAP_FAILED;
590 req = &((*internals)->req);
592 req->tp_block_size = blocksize;
593 req->tp_block_nr = blockcnt;
594 req->tp_frame_size = framesize;
595 req->tp_frame_nr = framecnt;
597 ifnamelen = strlen(pair->value);
598 if (ifnamelen < sizeof(ifr.ifr_name)) {
599 memcpy(ifr.ifr_name, pair->value, ifnamelen);
600 ifr.ifr_name[ifnamelen] = '\0';
603 "%s: I/F name too long (%s)",
607 if (ioctl(sockfd, SIOCGIFINDEX, &ifr) == -1) {
609 "%s: ioctl failed (SIOCGIFINDEX)",
613 (*internals)->if_name = strdup(pair->value);
614 if ((*internals)->if_name == NULL)
616 (*internals)->if_index = ifr.ifr_ifindex;
618 if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) == -1) {
620 "%s: ioctl failed (SIOCGIFHWADDR)",
624 memcpy(&(*internals)->eth_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
626 memset(&sockaddr, 0, sizeof(sockaddr));
627 sockaddr.sll_family = AF_PACKET;
628 sockaddr.sll_protocol = htons(ETH_P_ALL);
629 sockaddr.sll_ifindex = (*internals)->if_index;
631 #if defined(PACKET_FANOUT)
632 fanout_arg = (getpid() ^ (*internals)->if_index) & 0xffff;
633 fanout_arg |= (PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_DEFRAG) << 16;
634 #if defined(PACKET_FANOUT_FLAG_ROLLOVER)
635 fanout_arg |= PACKET_FANOUT_FLAG_ROLLOVER << 16;
639 for (q = 0; q < nb_queues; q++) {
640 /* Open an AF_PACKET socket for this queue... */
641 qsockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
644 "%s: could not open AF_PACKET socket",
650 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_VERSION,
651 &tpver, sizeof(tpver));
654 "%s: could not set PACKET_VERSION on AF_PACKET socket for %s",
660 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_LOSS,
661 &discard, sizeof(discard));
664 "%s: could not set PACKET_LOSS on AF_PACKET socket for %s",
669 #if defined(PACKET_QDISC_BYPASS)
670 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS,
671 &qdisc_bypass, sizeof(qdisc_bypass));
674 "%s: could not set PACKET_QDISC_BYPASS on AF_PACKET socket for %s",
679 RTE_SET_USED(qdisc_bypass);
682 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_RX_RING, req, sizeof(*req));
685 "%s: could not set PACKET_RX_RING on AF_PACKET socket for %s",
690 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_TX_RING, req, sizeof(*req));
693 "%s: could not set PACKET_TX_RING on AF_PACKET "
694 "socket for %s", name, pair->value);
698 rx_queue = &((*internals)->rx_queue[q]);
699 rx_queue->framecount = req->tp_frame_nr;
701 rx_queue->map = mmap(NULL, 2 * req->tp_block_size * req->tp_block_nr,
702 PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED,
704 if (rx_queue->map == MAP_FAILED) {
706 "%s: call to mmap failed on AF_PACKET socket for %s",
711 /* rdsize is same for both Tx and Rx */
712 rdsize = req->tp_frame_nr * sizeof(*(rx_queue->rd));
714 rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
715 if (rx_queue->rd == NULL)
717 for (i = 0; i < req->tp_frame_nr; ++i) {
718 rx_queue->rd[i].iov_base = rx_queue->map + (i * framesize);
719 rx_queue->rd[i].iov_len = req->tp_frame_size;
721 rx_queue->sockfd = qsockfd;
723 tx_queue = &((*internals)->tx_queue[q]);
724 tx_queue->framecount = req->tp_frame_nr;
725 tx_queue->frame_data_size = req->tp_frame_size;
726 tx_queue->frame_data_size -= TPACKET2_HDRLEN -
727 sizeof(struct sockaddr_ll);
729 tx_queue->map = rx_queue->map + req->tp_block_size * req->tp_block_nr;
731 tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
732 if (tx_queue->rd == NULL)
734 for (i = 0; i < req->tp_frame_nr; ++i) {
735 tx_queue->rd[i].iov_base = tx_queue->map + (i * framesize);
736 tx_queue->rd[i].iov_len = req->tp_frame_size;
738 tx_queue->sockfd = qsockfd;
740 rc = bind(qsockfd, (const struct sockaddr*)&sockaddr, sizeof(sockaddr));
743 "%s: could not bind AF_PACKET socket to %s",
748 #if defined(PACKET_FANOUT)
749 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_FANOUT,
750 &fanout_arg, sizeof(fanout_arg));
753 "%s: could not set PACKET_FANOUT on AF_PACKET socket "
754 "for %s", name, pair->value);
760 /* reserve an ethdev entry */
761 *eth_dev = rte_eth_vdev_allocate(dev, 0);
762 if (*eth_dev == NULL)
766 * now put it all together
767 * - store queue data in internals,
768 * - store numa_node in eth_dev
769 * - point eth_dev_data to internals
770 * - and point eth_dev structure to new eth_dev_data structure
773 (*internals)->nb_queues = nb_queues;
775 data = (*eth_dev)->data;
776 data->dev_private = *internals;
777 data->nb_rx_queues = (uint16_t)nb_queues;
778 data->nb_tx_queues = (uint16_t)nb_queues;
779 data->dev_link = pmd_link;
780 data->mac_addrs = &(*internals)->eth_addr;
782 (*eth_dev)->dev_ops = &ops;
789 for (q = 0; q < nb_queues; q++) {
790 munmap((*internals)->rx_queue[q].map,
791 2 * req->tp_block_size * req->tp_block_nr);
793 rte_free((*internals)->rx_queue[q].rd);
794 rte_free((*internals)->tx_queue[q].rd);
795 if (((*internals)->rx_queue[q].sockfd != 0) &&
796 ((*internals)->rx_queue[q].sockfd != qsockfd))
797 close((*internals)->rx_queue[q].sockfd);
799 free((*internals)->if_name);
800 rte_free(*internals);
805 rte_eth_from_packet(struct rte_vdev_device *dev,
807 struct rte_kvargs *kvlist)
809 const char *name = rte_vdev_device_name(dev);
810 struct pmd_internals *internals = NULL;
811 struct rte_eth_dev *eth_dev = NULL;
812 struct rte_kvargs_pair *pair = NULL;
814 unsigned int blockcount;
815 unsigned int blocksize = DFLT_BLOCK_SIZE;
816 unsigned int framesize = DFLT_FRAME_SIZE;
817 unsigned int framecount = DFLT_FRAME_COUNT;
818 unsigned int qpairs = 1;
819 unsigned int qdisc_bypass = 1;
821 /* do some parameter checking */
826 * Walk arguments for configurable settings
828 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
829 pair = &kvlist->pairs[k_idx];
830 if (strstr(pair->key, ETH_AF_PACKET_NUM_Q_ARG) != NULL) {
831 qpairs = atoi(pair->value);
833 qpairs > RTE_PMD_AF_PACKET_MAX_RINGS) {
835 "%s: invalid qpairs value",
841 if (strstr(pair->key, ETH_AF_PACKET_BLOCKSIZE_ARG) != NULL) {
842 blocksize = atoi(pair->value);
845 "%s: invalid blocksize value",
851 if (strstr(pair->key, ETH_AF_PACKET_FRAMESIZE_ARG) != NULL) {
852 framesize = atoi(pair->value);
855 "%s: invalid framesize value",
861 if (strstr(pair->key, ETH_AF_PACKET_FRAMECOUNT_ARG) != NULL) {
862 framecount = atoi(pair->value);
865 "%s: invalid framecount value",
871 if (strstr(pair->key, ETH_AF_PACKET_QDISC_BYPASS_ARG) != NULL) {
872 qdisc_bypass = atoi(pair->value);
873 if (qdisc_bypass > 1) {
875 "%s: invalid bypass value",
883 if (framesize > blocksize) {
885 "%s: AF_PACKET MMAP frame size exceeds block size!",
890 blockcount = framecount / (blocksize / framesize);
893 "%s: invalid AF_PACKET MMAP parameters", name);
897 PMD_LOG(INFO, "%s: AF_PACKET MMAP parameters:", name);
898 PMD_LOG(INFO, "%s:\tblock size %d", name, blocksize);
899 PMD_LOG(INFO, "%s:\tblock count %d", name, blockcount);
900 PMD_LOG(INFO, "%s:\tframe size %d", name, framesize);
901 PMD_LOG(INFO, "%s:\tframe count %d", name, framecount);
903 if (rte_pmd_init_internals(dev, *sockfd, qpairs,
904 blocksize, blockcount,
905 framesize, framecount,
907 &internals, ð_dev,
911 eth_dev->rx_pkt_burst = eth_af_packet_rx;
912 eth_dev->tx_pkt_burst = eth_af_packet_tx;
918 rte_pmd_af_packet_probe(struct rte_vdev_device *dev)
921 struct rte_kvargs *kvlist;
923 struct rte_eth_dev *eth_dev;
924 const char *name = rte_vdev_device_name(dev);
926 PMD_LOG(INFO, "Initializing pmd_af_packet for %s", name);
928 if (rte_eal_process_type() == RTE_PROC_SECONDARY &&
929 strlen(rte_vdev_device_args(dev)) == 0) {
930 eth_dev = rte_eth_dev_attach_secondary(name);
932 PMD_LOG(ERR, "Failed to probe %s", name);
935 /* TODO: request info from primary to set up Rx and Tx */
936 eth_dev->dev_ops = &ops;
940 kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_arguments);
941 if (kvlist == NULL) {
947 * If iface argument is passed we open the NICs and use them for
950 if (rte_kvargs_count(kvlist, ETH_AF_PACKET_IFACE_ARG) == 1) {
952 ret = rte_kvargs_process(kvlist, ETH_AF_PACKET_IFACE_ARG,
953 &open_packet_iface, &sockfd);
958 if (dev->device.numa_node == SOCKET_ID_ANY)
959 dev->device.numa_node = rte_socket_id();
961 ret = rte_eth_from_packet(dev, &sockfd, kvlist);
962 close(sockfd); /* no longer needed */
965 rte_kvargs_free(kvlist);
970 rte_pmd_af_packet_remove(struct rte_vdev_device *dev)
972 struct rte_eth_dev *eth_dev = NULL;
973 struct pmd_internals *internals;
976 PMD_LOG(INFO, "Closing AF_PACKET ethdev on numa socket %u",
982 /* find the ethdev entry */
983 eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
987 internals = eth_dev->data->dev_private;
988 for (q = 0; q < internals->nb_queues; q++) {
989 rte_free(internals->rx_queue[q].rd);
990 rte_free(internals->tx_queue[q].rd);
992 free(internals->if_name);
994 rte_free(eth_dev->data->dev_private);
996 rte_eth_dev_release_port(eth_dev);
1001 static struct rte_vdev_driver pmd_af_packet_drv = {
1002 .probe = rte_pmd_af_packet_probe,
1003 .remove = rte_pmd_af_packet_remove,
1006 RTE_PMD_REGISTER_VDEV(net_af_packet, pmd_af_packet_drv);
1007 RTE_PMD_REGISTER_ALIAS(net_af_packet, eth_af_packet);
1008 RTE_PMD_REGISTER_PARAM_STRING(net_af_packet,
1014 "qdisc_bypass=<0|1>");
1016 RTE_INIT(af_packet_init_log);
1018 af_packet_init_log(void)
1020 af_packet_logtype = rte_log_register("pmd.net.packet");
1021 if (af_packet_logtype >= 0)
1022 rte_log_set_level(af_packet_logtype, RTE_LOG_NOTICE);