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 <net/if_arp.h>
23 #include <sys/types.h>
24 #include <sys/socket.h>
25 #include <sys/ioctl.h>
31 #define ETH_AF_PACKET_IFACE_ARG "iface"
32 #define ETH_AF_PACKET_NUM_Q_ARG "qpairs"
33 #define ETH_AF_PACKET_BLOCKSIZE_ARG "blocksz"
34 #define ETH_AF_PACKET_FRAMESIZE_ARG "framesz"
35 #define ETH_AF_PACKET_FRAMECOUNT_ARG "framecnt"
36 #define ETH_AF_PACKET_QDISC_BYPASS_ARG "qdisc_bypass"
38 #define DFLT_FRAME_SIZE (1 << 11)
39 #define DFLT_FRAME_COUNT (1 << 9)
41 #define RTE_PMD_AF_PACKET_MAX_RINGS 16
48 unsigned int framecount;
49 unsigned int framenum;
51 struct rte_mempool *mb_pool;
54 volatile unsigned long rx_pkts;
55 volatile unsigned long rx_bytes;
60 unsigned int frame_data_size;
64 unsigned int framecount;
65 unsigned int framenum;
67 volatile unsigned long tx_pkts;
68 volatile unsigned long err_pkts;
69 volatile unsigned long tx_bytes;
72 struct pmd_internals {
77 struct rte_ether_addr eth_addr;
79 struct tpacket_req req;
81 struct pkt_rx_queue rx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
82 struct pkt_tx_queue tx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
85 static const char *valid_arguments[] = {
86 ETH_AF_PACKET_IFACE_ARG,
87 ETH_AF_PACKET_NUM_Q_ARG,
88 ETH_AF_PACKET_BLOCKSIZE_ARG,
89 ETH_AF_PACKET_FRAMESIZE_ARG,
90 ETH_AF_PACKET_FRAMECOUNT_ARG,
91 ETH_AF_PACKET_QDISC_BYPASS_ARG,
95 static struct rte_eth_link pmd_link = {
96 .link_speed = ETH_SPEED_NUM_10G,
97 .link_duplex = ETH_LINK_FULL_DUPLEX,
98 .link_status = ETH_LINK_DOWN,
99 .link_autoneg = ETH_LINK_FIXED,
102 static int af_packet_logtype;
104 #define PMD_LOG(level, fmt, args...) \
105 rte_log(RTE_LOG_ ## level, af_packet_logtype, \
106 "%s(): " fmt "\n", __func__, ##args)
108 #define PMD_LOG_ERRNO(level, fmt, args...) \
109 rte_log(RTE_LOG_ ## level, af_packet_logtype, \
110 "%s(): " fmt ":%s\n", __func__, ##args, strerror(errno))
113 eth_af_packet_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
116 struct tpacket2_hdr *ppd;
117 struct rte_mbuf *mbuf;
119 struct pkt_rx_queue *pkt_q = queue;
121 unsigned long num_rx_bytes = 0;
122 unsigned int framecount, framenum;
124 if (unlikely(nb_pkts == 0))
128 * Reads the given number of packets from the AF_PACKET socket one by
129 * one and copies the packet data into a newly allocated mbuf.
131 framecount = pkt_q->framecount;
132 framenum = pkt_q->framenum;
133 for (i = 0; i < nb_pkts; i++) {
134 /* point at the next incoming frame */
135 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
136 if ((ppd->tp_status & TP_STATUS_USER) == 0)
139 /* allocate the next mbuf */
140 mbuf = rte_pktmbuf_alloc(pkt_q->mb_pool);
141 if (unlikely(mbuf == NULL))
144 /* packet will fit in the mbuf, go ahead and receive it */
145 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf) = ppd->tp_snaplen;
146 pbuf = (uint8_t *) ppd + ppd->tp_mac;
147 memcpy(rte_pktmbuf_mtod(mbuf, void *), pbuf, rte_pktmbuf_data_len(mbuf));
149 /* check for vlan info */
150 if (ppd->tp_status & TP_STATUS_VLAN_VALID) {
151 mbuf->vlan_tci = ppd->tp_vlan_tci;
152 mbuf->ol_flags |= (PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED);
155 /* release incoming frame and advance ring buffer */
156 ppd->tp_status = TP_STATUS_KERNEL;
157 if (++framenum >= framecount)
159 mbuf->port = pkt_q->in_port;
161 /* account for the receive frame */
164 num_rx_bytes += mbuf->pkt_len;
166 pkt_q->framenum = framenum;
167 pkt_q->rx_pkts += num_rx;
168 pkt_q->rx_bytes += num_rx_bytes;
173 * Callback to handle sending packets through a real NIC.
176 eth_af_packet_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
178 struct tpacket2_hdr *ppd;
179 struct rte_mbuf *mbuf;
181 unsigned int framecount, framenum;
183 struct pkt_tx_queue *pkt_q = queue;
185 unsigned long num_tx_bytes = 0;
188 if (unlikely(nb_pkts == 0))
191 memset(&pfd, 0, sizeof(pfd));
192 pfd.fd = pkt_q->sockfd;
193 pfd.events = POLLOUT;
196 framecount = pkt_q->framecount;
197 framenum = pkt_q->framenum;
198 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
199 for (i = 0; i < nb_pkts; i++) {
202 /* drop oversized packets */
203 if (mbuf->pkt_len > pkt_q->frame_data_size) {
204 rte_pktmbuf_free(mbuf);
208 /* insert vlan info if necessary */
209 if (mbuf->ol_flags & PKT_TX_VLAN_PKT) {
210 if (rte_vlan_insert(&mbuf)) {
211 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);
225 struct rte_mbuf *tmp_mbuf = mbuf;
227 uint16_t data_len = rte_pktmbuf_data_len(tmp_mbuf);
228 memcpy(pbuf, rte_pktmbuf_mtod(tmp_mbuf, void*), data_len);
230 tmp_mbuf = tmp_mbuf->next;
233 ppd->tp_len = mbuf->pkt_len;
234 ppd->tp_snaplen = mbuf->pkt_len;
236 /* release incoming frame and advance ring buffer */
237 ppd->tp_status = TP_STATUS_SEND_REQUEST;
238 if (++framenum >= framecount)
240 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
243 num_tx_bytes += mbuf->pkt_len;
244 rte_pktmbuf_free(mbuf);
247 /* kick-off transmits */
248 if (sendto(pkt_q->sockfd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1 &&
249 errno != ENOBUFS && errno != EAGAIN) {
251 * In case of a ENOBUFS/EAGAIN error all of the enqueued
252 * packets will be considered successful even though only some
260 pkt_q->framenum = framenum;
261 pkt_q->tx_pkts += num_tx;
262 pkt_q->err_pkts += i - num_tx;
263 pkt_q->tx_bytes += num_tx_bytes;
268 eth_dev_start(struct rte_eth_dev *dev)
270 dev->data->dev_link.link_status = ETH_LINK_UP;
275 * This function gets called when the current port gets stopped.
278 eth_dev_stop(struct rte_eth_dev *dev)
282 struct pmd_internals *internals = dev->data->dev_private;
284 for (i = 0; i < internals->nb_queues; i++) {
285 sockfd = internals->rx_queue[i].sockfd;
289 /* Prevent use after free in case tx fd == rx fd */
290 if (sockfd != internals->tx_queue[i].sockfd) {
291 sockfd = internals->tx_queue[i].sockfd;
296 internals->rx_queue[i].sockfd = -1;
297 internals->tx_queue[i].sockfd = -1;
300 dev->data->dev_link.link_status = ETH_LINK_DOWN;
304 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
310 eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
312 struct pmd_internals *internals = dev->data->dev_private;
314 dev_info->if_index = internals->if_index;
315 dev_info->max_mac_addrs = 1;
316 dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN;
317 dev_info->max_rx_queues = (uint16_t)internals->nb_queues;
318 dev_info->max_tx_queues = (uint16_t)internals->nb_queues;
319 dev_info->min_rx_bufsize = 0;
320 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
321 DEV_TX_OFFLOAD_VLAN_INSERT;
327 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
330 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
331 unsigned long rx_bytes_total = 0, tx_bytes_total = 0;
332 const struct pmd_internals *internal = dev->data->dev_private;
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_ipackets[i] = internal->rx_queue[i].rx_pkts;
338 igb_stats->q_ibytes[i] = internal->rx_queue[i].rx_bytes;
339 rx_total += igb_stats->q_ipackets[i];
340 rx_bytes_total += igb_stats->q_ibytes[i];
343 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
344 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
345 for (i = 0; i < imax; i++) {
346 igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
347 igb_stats->q_obytes[i] = internal->tx_queue[i].tx_bytes;
348 tx_total += igb_stats->q_opackets[i];
349 tx_err_total += internal->tx_queue[i].err_pkts;
350 tx_bytes_total += igb_stats->q_obytes[i];
353 igb_stats->ipackets = rx_total;
354 igb_stats->ibytes = rx_bytes_total;
355 igb_stats->opackets = tx_total;
356 igb_stats->oerrors = tx_err_total;
357 igb_stats->obytes = tx_bytes_total;
362 eth_stats_reset(struct rte_eth_dev *dev)
365 struct pmd_internals *internal = dev->data->dev_private;
367 for (i = 0; i < internal->nb_queues; i++) {
368 internal->rx_queue[i].rx_pkts = 0;
369 internal->rx_queue[i].rx_bytes = 0;
372 for (i = 0; i < internal->nb_queues; i++) {
373 internal->tx_queue[i].tx_pkts = 0;
374 internal->tx_queue[i].err_pkts = 0;
375 internal->tx_queue[i].tx_bytes = 0;
382 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
387 eth_queue_release(void *q __rte_unused)
392 eth_link_update(struct rte_eth_dev *dev __rte_unused,
393 int wait_to_complete __rte_unused)
399 eth_rx_queue_setup(struct rte_eth_dev *dev,
400 uint16_t rx_queue_id,
401 uint16_t nb_rx_desc __rte_unused,
402 unsigned int socket_id __rte_unused,
403 const struct rte_eth_rxconf *rx_conf __rte_unused,
404 struct rte_mempool *mb_pool)
406 struct pmd_internals *internals = dev->data->dev_private;
407 struct pkt_rx_queue *pkt_q = &internals->rx_queue[rx_queue_id];
408 unsigned int buf_size, data_size;
410 pkt_q->mb_pool = mb_pool;
412 /* Now get the space available for data in the mbuf */
413 buf_size = rte_pktmbuf_data_room_size(pkt_q->mb_pool) -
414 RTE_PKTMBUF_HEADROOM;
415 data_size = internals->req.tp_frame_size;
416 data_size -= TPACKET2_HDRLEN - sizeof(struct sockaddr_ll);
418 if (data_size > buf_size) {
420 "%s: %d bytes will not fit in mbuf (%d bytes)",
421 dev->device->name, data_size, buf_size);
425 dev->data->rx_queues[rx_queue_id] = pkt_q;
426 pkt_q->in_port = dev->data->port_id;
432 eth_tx_queue_setup(struct rte_eth_dev *dev,
433 uint16_t tx_queue_id,
434 uint16_t nb_tx_desc __rte_unused,
435 unsigned int socket_id __rte_unused,
436 const struct rte_eth_txconf *tx_conf __rte_unused)
439 struct pmd_internals *internals = dev->data->dev_private;
441 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
446 eth_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
448 struct pmd_internals *internals = dev->data->dev_private;
449 struct ifreq ifr = { .ifr_mtu = mtu };
452 unsigned int data_size = internals->req.tp_frame_size -
458 s = socket(PF_INET, SOCK_DGRAM, 0);
462 strlcpy(ifr.ifr_name, internals->if_name, IFNAMSIZ);
463 ret = ioctl(s, SIOCSIFMTU, &ifr);
473 eth_dev_macaddr_set(struct rte_eth_dev *dev, struct rte_ether_addr *addr)
475 struct pmd_internals *internals = dev->data->dev_private;
476 struct ifreq ifr = { };
477 int sockfd = internals->rx_queue[0].sockfd;
481 PMD_LOG(ERR, "receive socket not found");
485 strlcpy(ifr.ifr_name, internals->if_name, IFNAMSIZ);
486 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
487 memcpy(ifr.ifr_hwaddr.sa_data, addr, sizeof(*addr));
488 ret = ioctl(sockfd, SIOCSIFHWADDR, &ifr);
491 PMD_LOG_ERRNO(ERR, "ioctl(SIOCSIFHWADDR) failed");
499 eth_dev_change_flags(char *if_name, uint32_t flags, uint32_t mask)
505 s = socket(PF_INET, SOCK_DGRAM, 0);
509 strlcpy(ifr.ifr_name, if_name, IFNAMSIZ);
510 if (ioctl(s, SIOCGIFFLAGS, &ifr) < 0) {
514 ifr.ifr_flags &= mask;
515 ifr.ifr_flags |= flags;
516 if (ioctl(s, SIOCSIFFLAGS, &ifr) < 0) {
526 eth_dev_promiscuous_enable(struct rte_eth_dev *dev)
528 struct pmd_internals *internals = dev->data->dev_private;
530 return eth_dev_change_flags(internals->if_name, IFF_PROMISC, ~0);
534 eth_dev_promiscuous_disable(struct rte_eth_dev *dev)
536 struct pmd_internals *internals = dev->data->dev_private;
538 return eth_dev_change_flags(internals->if_name, 0, ~IFF_PROMISC);
541 static const struct eth_dev_ops ops = {
542 .dev_start = eth_dev_start,
543 .dev_stop = eth_dev_stop,
544 .dev_close = eth_dev_close,
545 .dev_configure = eth_dev_configure,
546 .dev_infos_get = eth_dev_info,
547 .mac_addr_set = eth_dev_macaddr_set,
548 .mtu_set = eth_dev_mtu_set,
549 .promiscuous_enable = eth_dev_promiscuous_enable,
550 .promiscuous_disable = eth_dev_promiscuous_disable,
551 .rx_queue_setup = eth_rx_queue_setup,
552 .tx_queue_setup = eth_tx_queue_setup,
553 .rx_queue_release = eth_queue_release,
554 .tx_queue_release = eth_queue_release,
555 .link_update = eth_link_update,
556 .stats_get = eth_stats_get,
557 .stats_reset = eth_stats_reset,
561 * Opens an AF_PACKET socket
564 open_packet_iface(const char *key __rte_unused,
565 const char *value __rte_unused,
568 int *sockfd = extra_args;
570 /* Open an AF_PACKET socket... */
571 *sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
573 PMD_LOG(ERR, "Could not open AF_PACKET socket");
581 rte_pmd_init_internals(struct rte_vdev_device *dev,
583 const unsigned nb_queues,
584 unsigned int blocksize,
585 unsigned int blockcnt,
586 unsigned int framesize,
587 unsigned int framecnt,
588 unsigned int qdisc_bypass,
589 struct pmd_internals **internals,
590 struct rte_eth_dev **eth_dev,
591 struct rte_kvargs *kvlist)
593 const char *name = rte_vdev_device_name(dev);
594 const unsigned int numa_node = dev->device.numa_node;
595 struct rte_eth_dev_data *data = NULL;
596 struct rte_kvargs_pair *pair = NULL;
600 struct sockaddr_ll sockaddr;
601 struct tpacket_req *req;
602 struct pkt_rx_queue *rx_queue;
603 struct pkt_tx_queue *tx_queue;
604 int rc, tpver, discard;
606 unsigned int i, q, rdsize;
607 #if defined(PACKET_FANOUT)
611 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
612 pair = &kvlist->pairs[k_idx];
613 if (strstr(pair->key, ETH_AF_PACKET_IFACE_ARG) != NULL)
618 "%s: no interface specified for AF_PACKET ethdev",
624 "%s: creating AF_PACKET-backed ethdev on numa socket %u",
627 *internals = rte_zmalloc_socket(name, sizeof(**internals),
629 if (*internals == NULL)
632 for (q = 0; q < nb_queues; q++) {
633 (*internals)->rx_queue[q].map = MAP_FAILED;
634 (*internals)->tx_queue[q].map = MAP_FAILED;
637 req = &((*internals)->req);
639 req->tp_block_size = blocksize;
640 req->tp_block_nr = blockcnt;
641 req->tp_frame_size = framesize;
642 req->tp_frame_nr = framecnt;
644 ifnamelen = strlen(pair->value);
645 if (ifnamelen < sizeof(ifr.ifr_name)) {
646 memcpy(ifr.ifr_name, pair->value, ifnamelen);
647 ifr.ifr_name[ifnamelen] = '\0';
650 "%s: I/F name too long (%s)",
654 if (ioctl(sockfd, SIOCGIFINDEX, &ifr) == -1) {
655 PMD_LOG_ERRNO(ERR, "%s: ioctl failed (SIOCGIFINDEX)", name);
658 (*internals)->if_name = strdup(pair->value);
659 if ((*internals)->if_name == NULL)
661 (*internals)->if_index = ifr.ifr_ifindex;
663 if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) == -1) {
664 PMD_LOG_ERRNO(ERR, "%s: ioctl failed (SIOCGIFHWADDR)", name);
667 memcpy(&(*internals)->eth_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
669 memset(&sockaddr, 0, sizeof(sockaddr));
670 sockaddr.sll_family = AF_PACKET;
671 sockaddr.sll_protocol = htons(ETH_P_ALL);
672 sockaddr.sll_ifindex = (*internals)->if_index;
674 #if defined(PACKET_FANOUT)
675 fanout_arg = (getpid() ^ (*internals)->if_index) & 0xffff;
676 fanout_arg |= (PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_DEFRAG) << 16;
677 #if defined(PACKET_FANOUT_FLAG_ROLLOVER)
678 fanout_arg |= PACKET_FANOUT_FLAG_ROLLOVER << 16;
682 for (q = 0; q < nb_queues; q++) {
683 /* Open an AF_PACKET socket for this queue... */
684 qsockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
687 "%s: could not open AF_PACKET socket",
693 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_VERSION,
694 &tpver, sizeof(tpver));
697 "%s: could not set PACKET_VERSION on AF_PACKET socket for %s",
703 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_LOSS,
704 &discard, sizeof(discard));
707 "%s: could not set PACKET_LOSS on AF_PACKET socket for %s",
712 #if defined(PACKET_QDISC_BYPASS)
713 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS,
714 &qdisc_bypass, sizeof(qdisc_bypass));
717 "%s: could not set PACKET_QDISC_BYPASS on AF_PACKET socket for %s",
722 RTE_SET_USED(qdisc_bypass);
725 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_RX_RING, req, sizeof(*req));
728 "%s: could not set PACKET_RX_RING on AF_PACKET socket for %s",
733 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_TX_RING, req, sizeof(*req));
736 "%s: could not set PACKET_TX_RING on AF_PACKET "
737 "socket for %s", name, pair->value);
741 rx_queue = &((*internals)->rx_queue[q]);
742 rx_queue->framecount = req->tp_frame_nr;
744 rx_queue->map = mmap(NULL, 2 * req->tp_block_size * req->tp_block_nr,
745 PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED,
747 if (rx_queue->map == MAP_FAILED) {
749 "%s: call to mmap failed on AF_PACKET socket for %s",
754 /* rdsize is same for both Tx and Rx */
755 rdsize = req->tp_frame_nr * sizeof(*(rx_queue->rd));
757 rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
758 if (rx_queue->rd == NULL)
760 for (i = 0; i < req->tp_frame_nr; ++i) {
761 rx_queue->rd[i].iov_base = rx_queue->map + (i * framesize);
762 rx_queue->rd[i].iov_len = req->tp_frame_size;
764 rx_queue->sockfd = qsockfd;
766 tx_queue = &((*internals)->tx_queue[q]);
767 tx_queue->framecount = req->tp_frame_nr;
768 tx_queue->frame_data_size = req->tp_frame_size;
769 tx_queue->frame_data_size -= TPACKET2_HDRLEN -
770 sizeof(struct sockaddr_ll);
772 tx_queue->map = rx_queue->map + req->tp_block_size * req->tp_block_nr;
774 tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
775 if (tx_queue->rd == NULL)
777 for (i = 0; i < req->tp_frame_nr; ++i) {
778 tx_queue->rd[i].iov_base = tx_queue->map + (i * framesize);
779 tx_queue->rd[i].iov_len = req->tp_frame_size;
781 tx_queue->sockfd = qsockfd;
783 rc = bind(qsockfd, (const struct sockaddr*)&sockaddr, sizeof(sockaddr));
786 "%s: could not bind AF_PACKET socket to %s",
791 #if defined(PACKET_FANOUT)
792 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_FANOUT,
793 &fanout_arg, sizeof(fanout_arg));
796 "%s: could not set PACKET_FANOUT on AF_PACKET socket for %s",
803 /* reserve an ethdev entry */
804 *eth_dev = rte_eth_vdev_allocate(dev, 0);
805 if (*eth_dev == NULL)
809 * now put it all together
810 * - store queue data in internals,
811 * - store numa_node in eth_dev
812 * - point eth_dev_data to internals
813 * - and point eth_dev structure to new eth_dev_data structure
816 (*internals)->nb_queues = nb_queues;
818 data = (*eth_dev)->data;
819 data->dev_private = *internals;
820 data->nb_rx_queues = (uint16_t)nb_queues;
821 data->nb_tx_queues = (uint16_t)nb_queues;
822 data->dev_link = pmd_link;
823 data->mac_addrs = &(*internals)->eth_addr;
825 (*eth_dev)->dev_ops = &ops;
832 for (q = 0; q < nb_queues; q++) {
833 munmap((*internals)->rx_queue[q].map,
834 2 * req->tp_block_size * req->tp_block_nr);
836 rte_free((*internals)->rx_queue[q].rd);
837 rte_free((*internals)->tx_queue[q].rd);
838 if (((*internals)->rx_queue[q].sockfd != 0) &&
839 ((*internals)->rx_queue[q].sockfd != qsockfd))
840 close((*internals)->rx_queue[q].sockfd);
842 free((*internals)->if_name);
843 rte_free(*internals);
848 rte_eth_from_packet(struct rte_vdev_device *dev,
850 struct rte_kvargs *kvlist)
852 const char *name = rte_vdev_device_name(dev);
853 struct pmd_internals *internals = NULL;
854 struct rte_eth_dev *eth_dev = NULL;
855 struct rte_kvargs_pair *pair = NULL;
857 unsigned int blockcount;
858 unsigned int blocksize;
859 unsigned int framesize = DFLT_FRAME_SIZE;
860 unsigned int framecount = DFLT_FRAME_COUNT;
861 unsigned int qpairs = 1;
862 unsigned int qdisc_bypass = 1;
864 /* do some parameter checking */
868 blocksize = getpagesize();
871 * Walk arguments for configurable settings
873 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
874 pair = &kvlist->pairs[k_idx];
875 if (strstr(pair->key, ETH_AF_PACKET_NUM_Q_ARG) != NULL) {
876 qpairs = atoi(pair->value);
878 qpairs > RTE_PMD_AF_PACKET_MAX_RINGS) {
880 "%s: invalid qpairs value",
886 if (strstr(pair->key, ETH_AF_PACKET_BLOCKSIZE_ARG) != NULL) {
887 blocksize = atoi(pair->value);
890 "%s: invalid blocksize value",
896 if (strstr(pair->key, ETH_AF_PACKET_FRAMESIZE_ARG) != NULL) {
897 framesize = atoi(pair->value);
900 "%s: invalid framesize value",
906 if (strstr(pair->key, ETH_AF_PACKET_FRAMECOUNT_ARG) != NULL) {
907 framecount = atoi(pair->value);
910 "%s: invalid framecount value",
916 if (strstr(pair->key, ETH_AF_PACKET_QDISC_BYPASS_ARG) != NULL) {
917 qdisc_bypass = atoi(pair->value);
918 if (qdisc_bypass > 1) {
920 "%s: invalid bypass value",
928 if (framesize > blocksize) {
930 "%s: AF_PACKET MMAP frame size exceeds block size!",
935 blockcount = framecount / (blocksize / framesize);
938 "%s: invalid AF_PACKET MMAP parameters", name);
942 PMD_LOG(INFO, "%s: AF_PACKET MMAP parameters:", name);
943 PMD_LOG(INFO, "%s:\tblock size %d", name, blocksize);
944 PMD_LOG(INFO, "%s:\tblock count %d", name, blockcount);
945 PMD_LOG(INFO, "%s:\tframe size %d", name, framesize);
946 PMD_LOG(INFO, "%s:\tframe count %d", name, framecount);
948 if (rte_pmd_init_internals(dev, *sockfd, qpairs,
949 blocksize, blockcount,
950 framesize, framecount,
952 &internals, ð_dev,
956 eth_dev->rx_pkt_burst = eth_af_packet_rx;
957 eth_dev->tx_pkt_burst = eth_af_packet_tx;
959 rte_eth_dev_probing_finish(eth_dev);
964 rte_pmd_af_packet_probe(struct rte_vdev_device *dev)
967 struct rte_kvargs *kvlist;
969 struct rte_eth_dev *eth_dev;
970 const char *name = rte_vdev_device_name(dev);
972 PMD_LOG(INFO, "Initializing pmd_af_packet for %s", name);
974 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
975 eth_dev = rte_eth_dev_attach_secondary(name);
977 PMD_LOG(ERR, "Failed to probe %s", name);
980 /* TODO: request info from primary to set up Rx and Tx */
981 eth_dev->dev_ops = &ops;
982 eth_dev->device = &dev->device;
983 rte_eth_dev_probing_finish(eth_dev);
987 kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_arguments);
988 if (kvlist == NULL) {
994 * If iface argument is passed we open the NICs and use them for
997 if (rte_kvargs_count(kvlist, ETH_AF_PACKET_IFACE_ARG) == 1) {
999 ret = rte_kvargs_process(kvlist, ETH_AF_PACKET_IFACE_ARG,
1000 &open_packet_iface, &sockfd);
1005 if (dev->device.numa_node == SOCKET_ID_ANY)
1006 dev->device.numa_node = rte_socket_id();
1008 ret = rte_eth_from_packet(dev, &sockfd, kvlist);
1009 close(sockfd); /* no longer needed */
1012 rte_kvargs_free(kvlist);
1017 rte_pmd_af_packet_remove(struct rte_vdev_device *dev)
1019 struct rte_eth_dev *eth_dev = NULL;
1020 struct pmd_internals *internals;
1021 struct tpacket_req *req;
1024 PMD_LOG(INFO, "Closing AF_PACKET ethdev on numa socket %u",
1030 /* find the ethdev entry */
1031 eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
1032 if (eth_dev == NULL)
1035 /* mac_addrs must not be freed alone because part of dev_private */
1036 eth_dev->data->mac_addrs = NULL;
1038 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1039 return rte_eth_dev_release_port(eth_dev);
1041 internals = eth_dev->data->dev_private;
1042 req = &internals->req;
1043 for (q = 0; q < internals->nb_queues; q++) {
1044 munmap(internals->rx_queue[q].map,
1045 2 * req->tp_block_size * req->tp_block_nr);
1046 rte_free(internals->rx_queue[q].rd);
1047 rte_free(internals->tx_queue[q].rd);
1049 free(internals->if_name);
1051 rte_eth_dev_release_port(eth_dev);
1056 static struct rte_vdev_driver pmd_af_packet_drv = {
1057 .probe = rte_pmd_af_packet_probe,
1058 .remove = rte_pmd_af_packet_remove,
1061 RTE_PMD_REGISTER_VDEV(net_af_packet, pmd_af_packet_drv);
1062 RTE_PMD_REGISTER_ALIAS(net_af_packet, eth_af_packet);
1063 RTE_PMD_REGISTER_PARAM_STRING(net_af_packet,
1069 "qdisc_bypass=<0|1>");
1071 RTE_INIT(af_packet_init_log)
1073 af_packet_logtype = rte_log_register("pmd.net.packet");
1074 if (af_packet_logtype >= 0)
1075 rte_log_set_level(af_packet_logtype, RTE_LOG_NOTICE);