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.
9 #include <rte_string_fns.h>
11 #include <rte_ethdev_driver.h>
12 #include <rte_ethdev_vdev.h>
13 #include <rte_malloc.h>
14 #include <rte_kvargs.h>
15 #include <rte_bus_vdev.h>
18 #include <linux/if_ether.h>
19 #include <linux/if_packet.h>
20 #include <arpa/inet.h>
22 #include <sys/types.h>
23 #include <sys/socket.h>
24 #include <sys/ioctl.h>
30 #define ETH_AF_PACKET_IFACE_ARG "iface"
31 #define ETH_AF_PACKET_NUM_Q_ARG "qpairs"
32 #define ETH_AF_PACKET_BLOCKSIZE_ARG "blocksz"
33 #define ETH_AF_PACKET_FRAMESIZE_ARG "framesz"
34 #define ETH_AF_PACKET_FRAMECOUNT_ARG "framecnt"
35 #define ETH_AF_PACKET_QDISC_BYPASS_ARG "qdisc_bypass"
37 #define DFLT_FRAME_SIZE (1 << 11)
38 #define DFLT_FRAME_COUNT (1 << 9)
40 #define RTE_PMD_AF_PACKET_MAX_RINGS 16
47 unsigned int framecount;
48 unsigned int framenum;
50 struct rte_mempool *mb_pool;
53 volatile unsigned long rx_pkts;
54 volatile unsigned long rx_bytes;
59 unsigned int frame_data_size;
63 unsigned int framecount;
64 unsigned int framenum;
66 volatile unsigned long tx_pkts;
67 volatile unsigned long err_pkts;
68 volatile unsigned long tx_bytes;
71 struct pmd_internals {
76 struct rte_ether_addr eth_addr;
78 struct tpacket_req req;
80 struct pkt_rx_queue rx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
81 struct pkt_tx_queue tx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
84 static const char *valid_arguments[] = {
85 ETH_AF_PACKET_IFACE_ARG,
86 ETH_AF_PACKET_NUM_Q_ARG,
87 ETH_AF_PACKET_BLOCKSIZE_ARG,
88 ETH_AF_PACKET_FRAMESIZE_ARG,
89 ETH_AF_PACKET_FRAMECOUNT_ARG,
90 ETH_AF_PACKET_QDISC_BYPASS_ARG,
94 static struct rte_eth_link pmd_link = {
95 .link_speed = ETH_SPEED_NUM_10G,
96 .link_duplex = ETH_LINK_FULL_DUPLEX,
97 .link_status = ETH_LINK_DOWN,
98 .link_autoneg = ETH_LINK_FIXED,
101 static int af_packet_logtype;
103 #define PMD_LOG(level, fmt, args...) \
104 rte_log(RTE_LOG_ ## level, af_packet_logtype, \
105 "%s(): " fmt "\n", __func__, ##args)
107 #define PMD_LOG_ERRNO(level, fmt, args...) \
108 rte_log(RTE_LOG_ ## level, af_packet_logtype, \
109 "%s(): " fmt ":%s\n", __func__, ##args, strerror(errno))
112 eth_af_packet_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
115 struct tpacket2_hdr *ppd;
116 struct rte_mbuf *mbuf;
118 struct pkt_rx_queue *pkt_q = queue;
120 unsigned long num_rx_bytes = 0;
121 unsigned int framecount, framenum;
123 if (unlikely(nb_pkts == 0))
127 * Reads the given number of packets from the AF_PACKET socket one by
128 * one and copies the packet data into a newly allocated mbuf.
130 framecount = pkt_q->framecount;
131 framenum = pkt_q->framenum;
132 for (i = 0; i < nb_pkts; i++) {
133 /* point at the next incoming frame */
134 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
135 if ((ppd->tp_status & TP_STATUS_USER) == 0)
138 /* allocate the next mbuf */
139 mbuf = rte_pktmbuf_alloc(pkt_q->mb_pool);
140 if (unlikely(mbuf == NULL))
143 /* packet will fit in the mbuf, go ahead and receive it */
144 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf) = ppd->tp_snaplen;
145 pbuf = (uint8_t *) ppd + ppd->tp_mac;
146 memcpy(rte_pktmbuf_mtod(mbuf, void *), pbuf, rte_pktmbuf_data_len(mbuf));
148 /* check for vlan info */
149 if (ppd->tp_status & TP_STATUS_VLAN_VALID) {
150 mbuf->vlan_tci = ppd->tp_vlan_tci;
151 mbuf->ol_flags |= (PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED);
154 /* release incoming frame and advance ring buffer */
155 ppd->tp_status = TP_STATUS_KERNEL;
156 if (++framenum >= framecount)
158 mbuf->port = pkt_q->in_port;
160 /* account for the receive frame */
163 num_rx_bytes += mbuf->pkt_len;
165 pkt_q->framenum = framenum;
166 pkt_q->rx_pkts += num_rx;
167 pkt_q->rx_bytes += num_rx_bytes;
172 * Callback to handle sending packets through a real NIC.
175 eth_af_packet_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
177 struct tpacket2_hdr *ppd;
178 struct rte_mbuf *mbuf;
180 unsigned int framecount, framenum;
182 struct pkt_tx_queue *pkt_q = queue;
184 unsigned long num_tx_bytes = 0;
187 if (unlikely(nb_pkts == 0))
190 memset(&pfd, 0, sizeof(pfd));
191 pfd.fd = pkt_q->sockfd;
192 pfd.events = POLLOUT;
195 framecount = pkt_q->framecount;
196 framenum = pkt_q->framenum;
197 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
198 for (i = 0; i < nb_pkts; i++) {
201 /* drop oversized packets */
202 if (mbuf->pkt_len > pkt_q->frame_data_size) {
203 rte_pktmbuf_free(mbuf);
207 /* insert vlan info if necessary */
208 if (mbuf->ol_flags & PKT_TX_VLAN_PKT) {
209 if (rte_vlan_insert(&mbuf)) {
210 rte_pktmbuf_free(mbuf);
215 /* point at the next incoming frame */
216 if ((ppd->tp_status != TP_STATUS_AVAILABLE) &&
217 (poll(&pfd, 1, -1) < 0))
220 /* copy the tx frame data */
221 pbuf = (uint8_t *) ppd + TPACKET2_HDRLEN -
222 sizeof(struct sockaddr_ll);
224 struct rte_mbuf *tmp_mbuf = mbuf;
226 uint16_t data_len = rte_pktmbuf_data_len(tmp_mbuf);
227 memcpy(pbuf, rte_pktmbuf_mtod(tmp_mbuf, void*), data_len);
229 tmp_mbuf = tmp_mbuf->next;
232 ppd->tp_len = mbuf->pkt_len;
233 ppd->tp_snaplen = mbuf->pkt_len;
235 /* release incoming frame and advance ring buffer */
236 ppd->tp_status = TP_STATUS_SEND_REQUEST;
237 if (++framenum >= framecount)
239 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
242 num_tx_bytes += mbuf->pkt_len;
243 rte_pktmbuf_free(mbuf);
246 /* kick-off transmits */
247 if (sendto(pkt_q->sockfd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1) {
248 /* error sending -- no packets transmitted */
253 pkt_q->framenum = framenum;
254 pkt_q->tx_pkts += num_tx;
255 pkt_q->err_pkts += i - num_tx;
256 pkt_q->tx_bytes += num_tx_bytes;
261 eth_dev_start(struct rte_eth_dev *dev)
263 dev->data->dev_link.link_status = ETH_LINK_UP;
268 * This function gets called when the current port gets stopped.
271 eth_dev_stop(struct rte_eth_dev *dev)
275 struct pmd_internals *internals = dev->data->dev_private;
277 for (i = 0; i < internals->nb_queues; i++) {
278 sockfd = internals->rx_queue[i].sockfd;
282 /* Prevent use after free in case tx fd == rx fd */
283 if (sockfd != internals->tx_queue[i].sockfd) {
284 sockfd = internals->tx_queue[i].sockfd;
289 internals->rx_queue[i].sockfd = -1;
290 internals->tx_queue[i].sockfd = -1;
293 dev->data->dev_link.link_status = ETH_LINK_DOWN;
297 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
303 eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
305 struct pmd_internals *internals = dev->data->dev_private;
307 dev_info->if_index = internals->if_index;
308 dev_info->max_mac_addrs = 1;
309 dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN;
310 dev_info->max_rx_queues = (uint16_t)internals->nb_queues;
311 dev_info->max_tx_queues = (uint16_t)internals->nb_queues;
312 dev_info->min_rx_bufsize = 0;
318 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
321 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
322 unsigned long rx_bytes_total = 0, tx_bytes_total = 0;
323 const struct pmd_internals *internal = dev->data->dev_private;
325 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
326 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
327 for (i = 0; i < imax; i++) {
328 igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
329 igb_stats->q_ibytes[i] = internal->rx_queue[i].rx_bytes;
330 rx_total += igb_stats->q_ipackets[i];
331 rx_bytes_total += igb_stats->q_ibytes[i];
334 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
335 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
336 for (i = 0; i < imax; i++) {
337 igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
338 igb_stats->q_obytes[i] = internal->tx_queue[i].tx_bytes;
339 tx_total += igb_stats->q_opackets[i];
340 tx_err_total += internal->tx_queue[i].err_pkts;
341 tx_bytes_total += igb_stats->q_obytes[i];
344 igb_stats->ipackets = rx_total;
345 igb_stats->ibytes = rx_bytes_total;
346 igb_stats->opackets = tx_total;
347 igb_stats->oerrors = tx_err_total;
348 igb_stats->obytes = tx_bytes_total;
353 eth_stats_reset(struct rte_eth_dev *dev)
356 struct pmd_internals *internal = dev->data->dev_private;
358 for (i = 0; i < internal->nb_queues; i++) {
359 internal->rx_queue[i].rx_pkts = 0;
360 internal->rx_queue[i].rx_bytes = 0;
363 for (i = 0; i < internal->nb_queues; i++) {
364 internal->tx_queue[i].tx_pkts = 0;
365 internal->tx_queue[i].err_pkts = 0;
366 internal->tx_queue[i].tx_bytes = 0;
373 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
378 eth_queue_release(void *q __rte_unused)
383 eth_link_update(struct rte_eth_dev *dev __rte_unused,
384 int wait_to_complete __rte_unused)
390 eth_rx_queue_setup(struct rte_eth_dev *dev,
391 uint16_t rx_queue_id,
392 uint16_t nb_rx_desc __rte_unused,
393 unsigned int socket_id __rte_unused,
394 const struct rte_eth_rxconf *rx_conf __rte_unused,
395 struct rte_mempool *mb_pool)
397 struct pmd_internals *internals = dev->data->dev_private;
398 struct pkt_rx_queue *pkt_q = &internals->rx_queue[rx_queue_id];
399 unsigned int buf_size, data_size;
401 pkt_q->mb_pool = mb_pool;
403 /* Now get the space available for data in the mbuf */
404 buf_size = rte_pktmbuf_data_room_size(pkt_q->mb_pool) -
405 RTE_PKTMBUF_HEADROOM;
406 data_size = internals->req.tp_frame_size;
407 data_size -= TPACKET2_HDRLEN - sizeof(struct sockaddr_ll);
409 if (data_size > buf_size) {
411 "%s: %d bytes will not fit in mbuf (%d bytes)",
412 dev->device->name, data_size, buf_size);
416 dev->data->rx_queues[rx_queue_id] = pkt_q;
417 pkt_q->in_port = dev->data->port_id;
423 eth_tx_queue_setup(struct rte_eth_dev *dev,
424 uint16_t tx_queue_id,
425 uint16_t nb_tx_desc __rte_unused,
426 unsigned int socket_id __rte_unused,
427 const struct rte_eth_txconf *tx_conf __rte_unused)
430 struct pmd_internals *internals = dev->data->dev_private;
432 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
437 eth_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
439 struct pmd_internals *internals = dev->data->dev_private;
440 struct ifreq ifr = { .ifr_mtu = mtu };
443 unsigned int data_size = internals->req.tp_frame_size -
449 s = socket(PF_INET, SOCK_DGRAM, 0);
453 strlcpy(ifr.ifr_name, internals->if_name, IFNAMSIZ);
454 ret = ioctl(s, SIOCSIFMTU, &ifr);
464 eth_dev_change_flags(char *if_name, uint32_t flags, uint32_t mask)
470 s = socket(PF_INET, SOCK_DGRAM, 0);
474 strlcpy(ifr.ifr_name, if_name, IFNAMSIZ);
475 if (ioctl(s, SIOCGIFFLAGS, &ifr) < 0) {
479 ifr.ifr_flags &= mask;
480 ifr.ifr_flags |= flags;
481 if (ioctl(s, SIOCSIFFLAGS, &ifr) < 0) {
491 eth_dev_promiscuous_enable(struct rte_eth_dev *dev)
493 struct pmd_internals *internals = dev->data->dev_private;
495 return eth_dev_change_flags(internals->if_name, IFF_PROMISC, ~0);
499 eth_dev_promiscuous_disable(struct rte_eth_dev *dev)
501 struct pmd_internals *internals = dev->data->dev_private;
503 return eth_dev_change_flags(internals->if_name, 0, ~IFF_PROMISC);
506 static const struct eth_dev_ops ops = {
507 .dev_start = eth_dev_start,
508 .dev_stop = eth_dev_stop,
509 .dev_close = eth_dev_close,
510 .dev_configure = eth_dev_configure,
511 .dev_infos_get = eth_dev_info,
512 .mtu_set = eth_dev_mtu_set,
513 .promiscuous_enable = eth_dev_promiscuous_enable,
514 .promiscuous_disable = eth_dev_promiscuous_disable,
515 .rx_queue_setup = eth_rx_queue_setup,
516 .tx_queue_setup = eth_tx_queue_setup,
517 .rx_queue_release = eth_queue_release,
518 .tx_queue_release = eth_queue_release,
519 .link_update = eth_link_update,
520 .stats_get = eth_stats_get,
521 .stats_reset = eth_stats_reset,
525 * Opens an AF_PACKET socket
528 open_packet_iface(const char *key __rte_unused,
529 const char *value __rte_unused,
532 int *sockfd = extra_args;
534 /* Open an AF_PACKET socket... */
535 *sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
537 PMD_LOG(ERR, "Could not open AF_PACKET socket");
545 rte_pmd_init_internals(struct rte_vdev_device *dev,
547 const unsigned nb_queues,
548 unsigned int blocksize,
549 unsigned int blockcnt,
550 unsigned int framesize,
551 unsigned int framecnt,
552 unsigned int qdisc_bypass,
553 struct pmd_internals **internals,
554 struct rte_eth_dev **eth_dev,
555 struct rte_kvargs *kvlist)
557 const char *name = rte_vdev_device_name(dev);
558 const unsigned int numa_node = dev->device.numa_node;
559 struct rte_eth_dev_data *data = NULL;
560 struct rte_kvargs_pair *pair = NULL;
564 struct sockaddr_ll sockaddr;
565 struct tpacket_req *req;
566 struct pkt_rx_queue *rx_queue;
567 struct pkt_tx_queue *tx_queue;
568 int rc, tpver, discard;
570 unsigned int i, q, rdsize;
571 #if defined(PACKET_FANOUT)
575 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
576 pair = &kvlist->pairs[k_idx];
577 if (strstr(pair->key, ETH_AF_PACKET_IFACE_ARG) != NULL)
582 "%s: no interface specified for AF_PACKET ethdev",
588 "%s: creating AF_PACKET-backed ethdev on numa socket %u",
591 *internals = rte_zmalloc_socket(name, sizeof(**internals),
593 if (*internals == NULL)
596 for (q = 0; q < nb_queues; q++) {
597 (*internals)->rx_queue[q].map = MAP_FAILED;
598 (*internals)->tx_queue[q].map = MAP_FAILED;
601 req = &((*internals)->req);
603 req->tp_block_size = blocksize;
604 req->tp_block_nr = blockcnt;
605 req->tp_frame_size = framesize;
606 req->tp_frame_nr = framecnt;
608 ifnamelen = strlen(pair->value);
609 if (ifnamelen < sizeof(ifr.ifr_name)) {
610 memcpy(ifr.ifr_name, pair->value, ifnamelen);
611 ifr.ifr_name[ifnamelen] = '\0';
614 "%s: I/F name too long (%s)",
618 if (ioctl(sockfd, SIOCGIFINDEX, &ifr) == -1) {
619 PMD_LOG_ERRNO(ERR, "%s: ioctl failed (SIOCGIFINDEX)", name);
622 (*internals)->if_name = strdup(pair->value);
623 if ((*internals)->if_name == NULL)
625 (*internals)->if_index = ifr.ifr_ifindex;
627 if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) == -1) {
628 PMD_LOG_ERRNO(ERR, "%s: ioctl failed (SIOCGIFHWADDR)", name);
631 memcpy(&(*internals)->eth_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
633 memset(&sockaddr, 0, sizeof(sockaddr));
634 sockaddr.sll_family = AF_PACKET;
635 sockaddr.sll_protocol = htons(ETH_P_ALL);
636 sockaddr.sll_ifindex = (*internals)->if_index;
638 #if defined(PACKET_FANOUT)
639 fanout_arg = (getpid() ^ (*internals)->if_index) & 0xffff;
640 fanout_arg |= (PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_DEFRAG) << 16;
641 #if defined(PACKET_FANOUT_FLAG_ROLLOVER)
642 fanout_arg |= PACKET_FANOUT_FLAG_ROLLOVER << 16;
646 for (q = 0; q < nb_queues; q++) {
647 /* Open an AF_PACKET socket for this queue... */
648 qsockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
651 "%s: could not open AF_PACKET socket",
657 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_VERSION,
658 &tpver, sizeof(tpver));
661 "%s: could not set PACKET_VERSION on AF_PACKET socket for %s",
667 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_LOSS,
668 &discard, sizeof(discard));
671 "%s: could not set PACKET_LOSS on AF_PACKET socket for %s",
676 #if defined(PACKET_QDISC_BYPASS)
677 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS,
678 &qdisc_bypass, sizeof(qdisc_bypass));
681 "%s: could not set PACKET_QDISC_BYPASS on AF_PACKET socket for %s",
686 RTE_SET_USED(qdisc_bypass);
689 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_RX_RING, req, sizeof(*req));
692 "%s: could not set PACKET_RX_RING on AF_PACKET socket for %s",
697 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_TX_RING, req, sizeof(*req));
700 "%s: could not set PACKET_TX_RING on AF_PACKET "
701 "socket for %s", name, pair->value);
705 rx_queue = &((*internals)->rx_queue[q]);
706 rx_queue->framecount = req->tp_frame_nr;
708 rx_queue->map = mmap(NULL, 2 * req->tp_block_size * req->tp_block_nr,
709 PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED,
711 if (rx_queue->map == MAP_FAILED) {
713 "%s: call to mmap failed on AF_PACKET socket for %s",
718 /* rdsize is same for both Tx and Rx */
719 rdsize = req->tp_frame_nr * sizeof(*(rx_queue->rd));
721 rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
722 if (rx_queue->rd == NULL)
724 for (i = 0; i < req->tp_frame_nr; ++i) {
725 rx_queue->rd[i].iov_base = rx_queue->map + (i * framesize);
726 rx_queue->rd[i].iov_len = req->tp_frame_size;
728 rx_queue->sockfd = qsockfd;
730 tx_queue = &((*internals)->tx_queue[q]);
731 tx_queue->framecount = req->tp_frame_nr;
732 tx_queue->frame_data_size = req->tp_frame_size;
733 tx_queue->frame_data_size -= TPACKET2_HDRLEN -
734 sizeof(struct sockaddr_ll);
736 tx_queue->map = rx_queue->map + req->tp_block_size * req->tp_block_nr;
738 tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
739 if (tx_queue->rd == NULL)
741 for (i = 0; i < req->tp_frame_nr; ++i) {
742 tx_queue->rd[i].iov_base = tx_queue->map + (i * framesize);
743 tx_queue->rd[i].iov_len = req->tp_frame_size;
745 tx_queue->sockfd = qsockfd;
747 rc = bind(qsockfd, (const struct sockaddr*)&sockaddr, sizeof(sockaddr));
750 "%s: could not bind AF_PACKET socket to %s",
755 #if defined(PACKET_FANOUT)
756 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_FANOUT,
757 &fanout_arg, sizeof(fanout_arg));
760 "%s: could not set PACKET_FANOUT on AF_PACKET socket for %s",
767 /* reserve an ethdev entry */
768 *eth_dev = rte_eth_vdev_allocate(dev, 0);
769 if (*eth_dev == NULL)
773 * now put it all together
774 * - store queue data in internals,
775 * - store numa_node in eth_dev
776 * - point eth_dev_data to internals
777 * - and point eth_dev structure to new eth_dev_data structure
780 (*internals)->nb_queues = nb_queues;
782 data = (*eth_dev)->data;
783 data->dev_private = *internals;
784 data->nb_rx_queues = (uint16_t)nb_queues;
785 data->nb_tx_queues = (uint16_t)nb_queues;
786 data->dev_link = pmd_link;
787 data->mac_addrs = &(*internals)->eth_addr;
789 (*eth_dev)->dev_ops = &ops;
796 for (q = 0; q < nb_queues; q++) {
797 munmap((*internals)->rx_queue[q].map,
798 2 * req->tp_block_size * req->tp_block_nr);
800 rte_free((*internals)->rx_queue[q].rd);
801 rte_free((*internals)->tx_queue[q].rd);
802 if (((*internals)->rx_queue[q].sockfd != 0) &&
803 ((*internals)->rx_queue[q].sockfd != qsockfd))
804 close((*internals)->rx_queue[q].sockfd);
806 free((*internals)->if_name);
807 rte_free(*internals);
812 rte_eth_from_packet(struct rte_vdev_device *dev,
814 struct rte_kvargs *kvlist)
816 const char *name = rte_vdev_device_name(dev);
817 struct pmd_internals *internals = NULL;
818 struct rte_eth_dev *eth_dev = NULL;
819 struct rte_kvargs_pair *pair = NULL;
821 unsigned int blockcount;
822 unsigned int blocksize;
823 unsigned int framesize = DFLT_FRAME_SIZE;
824 unsigned int framecount = DFLT_FRAME_COUNT;
825 unsigned int qpairs = 1;
826 unsigned int qdisc_bypass = 1;
828 /* do some parameter checking */
832 blocksize = getpagesize();
835 * Walk arguments for configurable settings
837 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
838 pair = &kvlist->pairs[k_idx];
839 if (strstr(pair->key, ETH_AF_PACKET_NUM_Q_ARG) != NULL) {
840 qpairs = atoi(pair->value);
842 qpairs > RTE_PMD_AF_PACKET_MAX_RINGS) {
844 "%s: invalid qpairs value",
850 if (strstr(pair->key, ETH_AF_PACKET_BLOCKSIZE_ARG) != NULL) {
851 blocksize = atoi(pair->value);
854 "%s: invalid blocksize value",
860 if (strstr(pair->key, ETH_AF_PACKET_FRAMESIZE_ARG) != NULL) {
861 framesize = atoi(pair->value);
864 "%s: invalid framesize value",
870 if (strstr(pair->key, ETH_AF_PACKET_FRAMECOUNT_ARG) != NULL) {
871 framecount = atoi(pair->value);
874 "%s: invalid framecount value",
880 if (strstr(pair->key, ETH_AF_PACKET_QDISC_BYPASS_ARG) != NULL) {
881 qdisc_bypass = atoi(pair->value);
882 if (qdisc_bypass > 1) {
884 "%s: invalid bypass value",
892 if (framesize > blocksize) {
894 "%s: AF_PACKET MMAP frame size exceeds block size!",
899 blockcount = framecount / (blocksize / framesize);
902 "%s: invalid AF_PACKET MMAP parameters", name);
906 PMD_LOG(INFO, "%s: AF_PACKET MMAP parameters:", name);
907 PMD_LOG(INFO, "%s:\tblock size %d", name, blocksize);
908 PMD_LOG(INFO, "%s:\tblock count %d", name, blockcount);
909 PMD_LOG(INFO, "%s:\tframe size %d", name, framesize);
910 PMD_LOG(INFO, "%s:\tframe count %d", name, framecount);
912 if (rte_pmd_init_internals(dev, *sockfd, qpairs,
913 blocksize, blockcount,
914 framesize, framecount,
916 &internals, ð_dev,
920 eth_dev->rx_pkt_burst = eth_af_packet_rx;
921 eth_dev->tx_pkt_burst = eth_af_packet_tx;
923 rte_eth_dev_probing_finish(eth_dev);
928 rte_pmd_af_packet_probe(struct rte_vdev_device *dev)
931 struct rte_kvargs *kvlist;
933 struct rte_eth_dev *eth_dev;
934 const char *name = rte_vdev_device_name(dev);
936 PMD_LOG(INFO, "Initializing pmd_af_packet for %s", name);
938 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
939 eth_dev = rte_eth_dev_attach_secondary(name);
941 PMD_LOG(ERR, "Failed to probe %s", name);
944 /* TODO: request info from primary to set up Rx and Tx */
945 eth_dev->dev_ops = &ops;
946 eth_dev->device = &dev->device;
947 rte_eth_dev_probing_finish(eth_dev);
951 kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_arguments);
952 if (kvlist == NULL) {
958 * If iface argument is passed we open the NICs and use them for
961 if (rte_kvargs_count(kvlist, ETH_AF_PACKET_IFACE_ARG) == 1) {
963 ret = rte_kvargs_process(kvlist, ETH_AF_PACKET_IFACE_ARG,
964 &open_packet_iface, &sockfd);
969 if (dev->device.numa_node == SOCKET_ID_ANY)
970 dev->device.numa_node = rte_socket_id();
972 ret = rte_eth_from_packet(dev, &sockfd, kvlist);
973 close(sockfd); /* no longer needed */
976 rte_kvargs_free(kvlist);
981 rte_pmd_af_packet_remove(struct rte_vdev_device *dev)
983 struct rte_eth_dev *eth_dev = NULL;
984 struct pmd_internals *internals;
985 struct tpacket_req *req;
988 PMD_LOG(INFO, "Closing AF_PACKET ethdev on numa socket %u",
994 /* find the ethdev entry */
995 eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
999 /* mac_addrs must not be freed alone because part of dev_private */
1000 eth_dev->data->mac_addrs = NULL;
1002 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1003 return rte_eth_dev_release_port(eth_dev);
1005 internals = eth_dev->data->dev_private;
1006 req = &internals->req;
1007 for (q = 0; q < internals->nb_queues; q++) {
1008 munmap(internals->rx_queue[q].map,
1009 2 * req->tp_block_size * req->tp_block_nr);
1010 rte_free(internals->rx_queue[q].rd);
1011 rte_free(internals->tx_queue[q].rd);
1013 free(internals->if_name);
1015 rte_eth_dev_release_port(eth_dev);
1020 static struct rte_vdev_driver pmd_af_packet_drv = {
1021 .probe = rte_pmd_af_packet_probe,
1022 .remove = rte_pmd_af_packet_remove,
1025 RTE_PMD_REGISTER_VDEV(net_af_packet, pmd_af_packet_drv);
1026 RTE_PMD_REGISTER_ALIAS(net_af_packet, eth_af_packet);
1027 RTE_PMD_REGISTER_PARAM_STRING(net_af_packet,
1033 "qdisc_bypass=<0|1>");
1035 RTE_INIT(af_packet_init_log)
1037 af_packet_logtype = rte_log_register("pmd.net.packet");
1038 if (af_packet_logtype >= 0)
1039 rte_log_set_level(af_packet_logtype, RTE_LOG_NOTICE);