4 * Copyright(c) 2014 John W. Linville <linville@tuxdriver.com>
6 * Originally based upon librte_pmd_pcap code:
8 * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
9 * Copyright(c) 2014 6WIND S.A.
10 * All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * * Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * * Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in
20 * the documentation and/or other materials provided with the
22 * * Neither the name of Intel Corporation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 #include <rte_ethdev.h>
41 #include <rte_malloc.h>
42 #include <rte_kvargs.h>
45 #include <linux/if_ether.h>
46 #include <linux/if_packet.h>
47 #include <arpa/inet.h>
49 #include <sys/types.h>
50 #include <sys/socket.h>
51 #include <sys/ioctl.h>
56 #define ETH_AF_PACKET_IFACE_ARG "iface"
57 #define ETH_AF_PACKET_NUM_Q_ARG "qpairs"
58 #define ETH_AF_PACKET_BLOCKSIZE_ARG "blocksz"
59 #define ETH_AF_PACKET_FRAMESIZE_ARG "framesz"
60 #define ETH_AF_PACKET_FRAMECOUNT_ARG "framecnt"
62 #define DFLT_BLOCK_SIZE (1 << 12)
63 #define DFLT_FRAME_SIZE (1 << 11)
64 #define DFLT_FRAME_COUNT (1 << 9)
66 #define RTE_PMD_AF_PACKET_MAX_RINGS 16
73 unsigned int framecount;
74 unsigned int framenum;
76 struct rte_mempool *mb_pool;
79 volatile unsigned long rx_pkts;
80 volatile unsigned long err_pkts;
81 volatile unsigned long rx_bytes;
89 unsigned int framecount;
90 unsigned int framenum;
92 volatile unsigned long tx_pkts;
93 volatile unsigned long err_pkts;
94 volatile unsigned long tx_bytes;
97 struct pmd_internals {
101 struct ether_addr eth_addr;
103 struct tpacket_req req;
105 struct pkt_rx_queue rx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
106 struct pkt_tx_queue tx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
109 static const char *valid_arguments[] = {
110 ETH_AF_PACKET_IFACE_ARG,
111 ETH_AF_PACKET_NUM_Q_ARG,
112 ETH_AF_PACKET_BLOCKSIZE_ARG,
113 ETH_AF_PACKET_FRAMESIZE_ARG,
114 ETH_AF_PACKET_FRAMECOUNT_ARG,
118 static struct rte_eth_link pmd_link = {
119 .link_speed = ETH_SPEED_NUM_10G,
120 .link_duplex = ETH_LINK_FULL_DUPLEX,
121 .link_status = ETH_LINK_DOWN,
122 .link_autoneg = ETH_LINK_SPEED_AUTONEG
126 eth_af_packet_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
129 struct tpacket2_hdr *ppd;
130 struct rte_mbuf *mbuf;
132 struct pkt_rx_queue *pkt_q = queue;
134 unsigned long num_rx_bytes = 0;
135 unsigned int framecount, framenum;
137 if (unlikely(nb_pkts == 0))
141 * Reads the given number of packets from the AF_PACKET socket one by
142 * one and copies the packet data into a newly allocated mbuf.
144 framecount = pkt_q->framecount;
145 framenum = pkt_q->framenum;
146 for (i = 0; i < nb_pkts; i++) {
147 /* point at the next incoming frame */
148 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
149 if ((ppd->tp_status & TP_STATUS_USER) == 0)
152 /* allocate the next mbuf */
153 mbuf = rte_pktmbuf_alloc(pkt_q->mb_pool);
154 if (unlikely(mbuf == NULL))
157 /* packet will fit in the mbuf, go ahead and receive it */
158 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf) = ppd->tp_snaplen;
159 pbuf = (uint8_t *) ppd + ppd->tp_mac;
160 memcpy(rte_pktmbuf_mtod(mbuf, void *), pbuf, rte_pktmbuf_data_len(mbuf));
162 /* release incoming frame and advance ring buffer */
163 ppd->tp_status = TP_STATUS_KERNEL;
164 if (++framenum >= framecount)
166 mbuf->port = pkt_q->in_port;
168 /* account for the receive frame */
171 num_rx_bytes += mbuf->pkt_len;
173 pkt_q->framenum = framenum;
174 pkt_q->rx_pkts += num_rx;
175 pkt_q->rx_bytes += num_rx_bytes;
180 * Callback to handle sending packets through a real NIC.
183 eth_af_packet_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
185 struct tpacket2_hdr *ppd;
186 struct rte_mbuf *mbuf;
188 unsigned int framecount, framenum;
190 struct pkt_tx_queue *pkt_q = queue;
192 unsigned long num_tx_bytes = 0;
195 if (unlikely(nb_pkts == 0))
198 memset(&pfd, 0, sizeof(pfd));
199 pfd.fd = pkt_q->sockfd;
200 pfd.events = POLLOUT;
203 framecount = pkt_q->framecount;
204 framenum = pkt_q->framenum;
205 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
206 for (i = 0; i < nb_pkts; i++) {
207 /* point at the next incoming frame */
208 if ((ppd->tp_status != TP_STATUS_AVAILABLE) &&
209 (poll(&pfd, 1, -1) < 0))
212 /* copy the tx frame data */
214 pbuf = (uint8_t *) ppd + TPACKET2_HDRLEN -
215 sizeof(struct sockaddr_ll);
216 memcpy(pbuf, rte_pktmbuf_mtod(mbuf, void*), rte_pktmbuf_data_len(mbuf));
217 ppd->tp_len = ppd->tp_snaplen = rte_pktmbuf_data_len(mbuf);
219 /* release incoming frame and advance ring buffer */
220 ppd->tp_status = TP_STATUS_SEND_REQUEST;
221 if (++framenum >= framecount)
223 ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
226 num_tx_bytes += mbuf->pkt_len;
227 rte_pktmbuf_free(mbuf);
230 /* kick-off transmits */
231 if (sendto(pkt_q->sockfd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1)
232 return 0; /* error sending -- no packets transmitted */
234 pkt_q->framenum = framenum;
235 pkt_q->tx_pkts += num_tx;
236 pkt_q->err_pkts += nb_pkts - num_tx;
237 pkt_q->tx_bytes += num_tx_bytes;
242 eth_dev_start(struct rte_eth_dev *dev)
244 dev->data->dev_link.link_status = ETH_LINK_UP;
249 * This function gets called when the current port gets stopped.
252 eth_dev_stop(struct rte_eth_dev *dev)
256 struct pmd_internals *internals = dev->data->dev_private;
258 for (i = 0; i < internals->nb_queues; i++) {
259 sockfd = internals->rx_queue[i].sockfd;
262 sockfd = internals->tx_queue[i].sockfd;
267 dev->data->dev_link.link_status = ETH_LINK_DOWN;
271 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
277 eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
279 struct pmd_internals *internals = dev->data->dev_private;
281 dev_info->if_index = internals->if_index;
282 dev_info->max_mac_addrs = 1;
283 dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN;
284 dev_info->max_rx_queues = (uint16_t)internals->nb_queues;
285 dev_info->max_tx_queues = (uint16_t)internals->nb_queues;
286 dev_info->min_rx_bufsize = 0;
290 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
293 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
294 unsigned long rx_bytes_total = 0, tx_bytes_total = 0;
295 const struct pmd_internals *internal = dev->data->dev_private;
297 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
298 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
299 for (i = 0; i < imax; i++) {
300 igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
301 igb_stats->q_ibytes[i] = internal->rx_queue[i].rx_bytes;
302 rx_total += igb_stats->q_ipackets[i];
303 rx_bytes_total += igb_stats->q_ibytes[i];
306 imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
307 internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
308 for (i = 0; i < imax; i++) {
309 igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
310 igb_stats->q_errors[i] = internal->tx_queue[i].err_pkts;
311 igb_stats->q_obytes[i] = internal->tx_queue[i].tx_bytes;
312 tx_total += igb_stats->q_opackets[i];
313 tx_err_total += igb_stats->q_errors[i];
314 tx_bytes_total += igb_stats->q_obytes[i];
317 igb_stats->ipackets = rx_total;
318 igb_stats->ibytes = rx_bytes_total;
319 igb_stats->opackets = tx_total;
320 igb_stats->oerrors = tx_err_total;
321 igb_stats->obytes = tx_bytes_total;
325 eth_stats_reset(struct rte_eth_dev *dev)
328 struct pmd_internals *internal = dev->data->dev_private;
330 for (i = 0; i < internal->nb_queues; i++) {
331 internal->rx_queue[i].rx_pkts = 0;
332 internal->rx_queue[i].rx_bytes = 0;
335 for (i = 0; i < internal->nb_queues; i++) {
336 internal->tx_queue[i].tx_pkts = 0;
337 internal->tx_queue[i].err_pkts = 0;
338 internal->tx_queue[i].tx_bytes = 0;
343 eth_dev_close(struct rte_eth_dev *dev __rte_unused)
348 eth_queue_release(void *q __rte_unused)
353 eth_link_update(struct rte_eth_dev *dev __rte_unused,
354 int wait_to_complete __rte_unused)
360 eth_rx_queue_setup(struct rte_eth_dev *dev,
361 uint16_t rx_queue_id,
362 uint16_t nb_rx_desc __rte_unused,
363 unsigned int socket_id __rte_unused,
364 const struct rte_eth_rxconf *rx_conf __rte_unused,
365 struct rte_mempool *mb_pool)
367 struct pmd_internals *internals = dev->data->dev_private;
368 struct pkt_rx_queue *pkt_q = &internals->rx_queue[rx_queue_id];
371 pkt_q->mb_pool = mb_pool;
373 /* Now get the space available for data in the mbuf */
374 buf_size = (uint16_t)(rte_pktmbuf_data_room_size(pkt_q->mb_pool) -
375 RTE_PKTMBUF_HEADROOM);
377 if (ETH_FRAME_LEN > buf_size) {
379 "%s: %d bytes will not fit in mbuf (%d bytes)\n",
380 dev->data->name, ETH_FRAME_LEN, buf_size);
384 dev->data->rx_queues[rx_queue_id] = pkt_q;
385 pkt_q->in_port = dev->data->port_id;
391 eth_tx_queue_setup(struct rte_eth_dev *dev,
392 uint16_t tx_queue_id,
393 uint16_t nb_tx_desc __rte_unused,
394 unsigned int socket_id __rte_unused,
395 const struct rte_eth_txconf *tx_conf __rte_unused)
398 struct pmd_internals *internals = dev->data->dev_private;
400 dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
404 static const struct eth_dev_ops ops = {
405 .dev_start = eth_dev_start,
406 .dev_stop = eth_dev_stop,
407 .dev_close = eth_dev_close,
408 .dev_configure = eth_dev_configure,
409 .dev_infos_get = eth_dev_info,
410 .rx_queue_setup = eth_rx_queue_setup,
411 .tx_queue_setup = eth_tx_queue_setup,
412 .rx_queue_release = eth_queue_release,
413 .tx_queue_release = eth_queue_release,
414 .link_update = eth_link_update,
415 .stats_get = eth_stats_get,
416 .stats_reset = eth_stats_reset,
420 * Opens an AF_PACKET socket
423 open_packet_iface(const char *key __rte_unused,
424 const char *value __rte_unused,
427 int *sockfd = extra_args;
429 /* Open an AF_PACKET socket... */
430 *sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
432 RTE_LOG(ERR, PMD, "Could not open AF_PACKET socket\n");
439 static struct rte_vdev_driver pmd_af_packet_drv;
442 rte_pmd_init_internals(const char *name,
444 const unsigned nb_queues,
445 unsigned int blocksize,
446 unsigned int blockcnt,
447 unsigned int framesize,
448 unsigned int framecnt,
449 const unsigned numa_node,
450 struct pmd_internals **internals,
451 struct rte_eth_dev **eth_dev,
452 struct rte_kvargs *kvlist)
454 struct rte_eth_dev_data *data = NULL;
455 struct rte_kvargs_pair *pair = NULL;
459 struct sockaddr_ll sockaddr;
460 struct tpacket_req *req;
461 struct pkt_rx_queue *rx_queue;
462 struct pkt_tx_queue *tx_queue;
463 int rc, tpver, discard;
465 unsigned int i, q, rdsize;
466 int fanout_arg __rte_unused, bypass __rte_unused;
468 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
469 pair = &kvlist->pairs[k_idx];
470 if (strstr(pair->key, ETH_AF_PACKET_IFACE_ARG) != NULL)
475 "%s: no interface specified for AF_PACKET ethdev\n",
481 "%s: creating AF_PACKET-backed ethdev on numa socket %u\n",
485 * now do all data allocation - for eth_dev structure, dummy pci driver
486 * and internal (private) data
488 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
492 *internals = rte_zmalloc_socket(name, sizeof(**internals),
494 if (*internals == NULL)
497 for (q = 0; q < nb_queues; q++) {
498 (*internals)->rx_queue[q].map = MAP_FAILED;
499 (*internals)->tx_queue[q].map = MAP_FAILED;
502 req = &((*internals)->req);
504 req->tp_block_size = blocksize;
505 req->tp_block_nr = blockcnt;
506 req->tp_frame_size = framesize;
507 req->tp_frame_nr = framecnt;
509 ifnamelen = strlen(pair->value);
510 if (ifnamelen < sizeof(ifr.ifr_name)) {
511 memcpy(ifr.ifr_name, pair->value, ifnamelen);
512 ifr.ifr_name[ifnamelen] = '\0';
515 "%s: I/F name too long (%s)\n",
519 if (ioctl(sockfd, SIOCGIFINDEX, &ifr) == -1) {
521 "%s: ioctl failed (SIOCGIFINDEX)\n",
525 (*internals)->if_index = ifr.ifr_ifindex;
527 if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) == -1) {
529 "%s: ioctl failed (SIOCGIFHWADDR)\n",
533 memcpy(&(*internals)->eth_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
535 memset(&sockaddr, 0, sizeof(sockaddr));
536 sockaddr.sll_family = AF_PACKET;
537 sockaddr.sll_protocol = htons(ETH_P_ALL);
538 sockaddr.sll_ifindex = (*internals)->if_index;
540 #if defined(PACKET_FANOUT)
541 fanout_arg = (getpid() ^ (*internals)->if_index) & 0xffff;
542 fanout_arg |= (PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_DEFRAG) << 16;
543 #if defined(PACKET_FANOUT_FLAG_ROLLOVER)
544 fanout_arg |= PACKET_FANOUT_FLAG_ROLLOVER << 16;
548 for (q = 0; q < nb_queues; q++) {
549 /* Open an AF_PACKET socket for this queue... */
550 qsockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
553 "%s: could not open AF_PACKET socket\n",
559 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_VERSION,
560 &tpver, sizeof(tpver));
563 "%s: could not set PACKET_VERSION on AF_PACKET "
564 "socket for %s\n", name, pair->value);
569 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_LOSS,
570 &discard, sizeof(discard));
573 "%s: could not set PACKET_LOSS on "
574 "AF_PACKET socket for %s\n", name, pair->value);
578 #if defined(PACKET_QDISC_BYPASS)
580 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS,
581 &bypass, sizeof(bypass));
584 "%s: could not set PACKET_QDISC_BYPASS "
585 "on AF_PACKET socket for %s\n", name,
591 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_RX_RING, req, sizeof(*req));
594 "%s: could not set PACKET_RX_RING on AF_PACKET "
595 "socket for %s\n", name, pair->value);
599 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_TX_RING, req, sizeof(*req));
602 "%s: could not set PACKET_TX_RING on AF_PACKET "
603 "socket for %s\n", name, pair->value);
607 rx_queue = &((*internals)->rx_queue[q]);
608 rx_queue->framecount = req->tp_frame_nr;
610 rx_queue->map = mmap(NULL, 2 * req->tp_block_size * req->tp_block_nr,
611 PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED,
613 if (rx_queue->map == MAP_FAILED) {
615 "%s: call to mmap failed on AF_PACKET socket for %s\n",
620 /* rdsize is same for both Tx and Rx */
621 rdsize = req->tp_frame_nr * sizeof(*(rx_queue->rd));
623 rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
624 if (rx_queue->rd == NULL)
626 for (i = 0; i < req->tp_frame_nr; ++i) {
627 rx_queue->rd[i].iov_base = rx_queue->map + (i * framesize);
628 rx_queue->rd[i].iov_len = req->tp_frame_size;
630 rx_queue->sockfd = qsockfd;
632 tx_queue = &((*internals)->tx_queue[q]);
633 tx_queue->framecount = req->tp_frame_nr;
635 tx_queue->map = rx_queue->map + req->tp_block_size * req->tp_block_nr;
637 tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
638 if (tx_queue->rd == NULL)
640 for (i = 0; i < req->tp_frame_nr; ++i) {
641 tx_queue->rd[i].iov_base = tx_queue->map + (i * framesize);
642 tx_queue->rd[i].iov_len = req->tp_frame_size;
644 tx_queue->sockfd = qsockfd;
646 rc = bind(qsockfd, (const struct sockaddr*)&sockaddr, sizeof(sockaddr));
649 "%s: could not bind AF_PACKET socket to %s\n",
654 #if defined(PACKET_FANOUT)
655 rc = setsockopt(qsockfd, SOL_PACKET, PACKET_FANOUT,
656 &fanout_arg, sizeof(fanout_arg));
659 "%s: could not set PACKET_FANOUT on AF_PACKET socket "
660 "for %s\n", name, pair->value);
666 /* reserve an ethdev entry */
667 *eth_dev = rte_eth_dev_allocate(name);
668 if (*eth_dev == NULL)
672 * now put it all together
673 * - store queue data in internals,
674 * - store numa_node in eth_dev
675 * - point eth_dev_data to internals
676 * - and point eth_dev structure to new eth_dev_data structure
679 (*internals)->nb_queues = nb_queues;
681 data->dev_private = *internals;
682 data->port_id = (*eth_dev)->data->port_id;
683 data->nb_rx_queues = (uint16_t)nb_queues;
684 data->nb_tx_queues = (uint16_t)nb_queues;
685 data->dev_link = pmd_link;
686 data->mac_addrs = &(*internals)->eth_addr;
688 (*eth_dev)->data->name, strlen((*eth_dev)->data->name));
690 (*eth_dev)->data = data;
691 (*eth_dev)->dev_ops = &ops;
692 (*eth_dev)->driver = NULL;
693 (*eth_dev)->data->dev_flags = RTE_ETH_DEV_DETACHABLE;
694 (*eth_dev)->data->drv_name = pmd_af_packet_drv.driver.name;
695 (*eth_dev)->data->kdrv = RTE_KDRV_NONE;
696 (*eth_dev)->data->numa_node = numa_node;
703 for (q = 0; q < nb_queues; q++) {
704 munmap((*internals)->rx_queue[q].map,
705 2 * req->tp_block_size * req->tp_block_nr);
707 rte_free((*internals)->rx_queue[q].rd);
708 rte_free((*internals)->tx_queue[q].rd);
709 if (((*internals)->rx_queue[q].sockfd != 0) &&
710 ((*internals)->rx_queue[q].sockfd != qsockfd))
711 close((*internals)->rx_queue[q].sockfd);
713 rte_free(*internals);
720 rte_eth_from_packet(const char *name,
722 const unsigned numa_node,
723 struct rte_kvargs *kvlist)
725 struct pmd_internals *internals = NULL;
726 struct rte_eth_dev *eth_dev = NULL;
727 struct rte_kvargs_pair *pair = NULL;
729 unsigned int blockcount;
730 unsigned int blocksize = DFLT_BLOCK_SIZE;
731 unsigned int framesize = DFLT_FRAME_SIZE;
732 unsigned int framecount = DFLT_FRAME_COUNT;
733 unsigned int qpairs = 1;
735 /* do some parameter checking */
740 * Walk arguments for configurable settings
742 for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
743 pair = &kvlist->pairs[k_idx];
744 if (strstr(pair->key, ETH_AF_PACKET_NUM_Q_ARG) != NULL) {
745 qpairs = atoi(pair->value);
747 qpairs > RTE_PMD_AF_PACKET_MAX_RINGS) {
749 "%s: invalid qpairs value\n",
755 if (strstr(pair->key, ETH_AF_PACKET_BLOCKSIZE_ARG) != NULL) {
756 blocksize = atoi(pair->value);
759 "%s: invalid blocksize value\n",
765 if (strstr(pair->key, ETH_AF_PACKET_FRAMESIZE_ARG) != NULL) {
766 framesize = atoi(pair->value);
769 "%s: invalid framesize value\n",
775 if (strstr(pair->key, ETH_AF_PACKET_FRAMECOUNT_ARG) != NULL) {
776 framecount = atoi(pair->value);
779 "%s: invalid framecount value\n",
787 if (framesize > blocksize) {
789 "%s: AF_PACKET MMAP frame size exceeds block size!\n",
794 blockcount = framecount / (blocksize / framesize);
797 "%s: invalid AF_PACKET MMAP parameters\n", name);
801 RTE_LOG(INFO, PMD, "%s: AF_PACKET MMAP parameters:\n", name);
802 RTE_LOG(INFO, PMD, "%s:\tblock size %d\n", name, blocksize);
803 RTE_LOG(INFO, PMD, "%s:\tblock count %d\n", name, blockcount);
804 RTE_LOG(INFO, PMD, "%s:\tframe size %d\n", name, framesize);
805 RTE_LOG(INFO, PMD, "%s:\tframe count %d\n", name, framecount);
807 if (rte_pmd_init_internals(name, *sockfd, qpairs,
808 blocksize, blockcount,
809 framesize, framecount,
810 numa_node, &internals, ð_dev,
814 eth_dev->rx_pkt_burst = eth_af_packet_rx;
815 eth_dev->tx_pkt_burst = eth_af_packet_tx;
821 rte_pmd_af_packet_probe(const char *name, const char *params)
825 struct rte_kvargs *kvlist;
828 RTE_LOG(INFO, PMD, "Initializing pmd_af_packet for %s\n", name);
830 numa_node = rte_socket_id();
832 kvlist = rte_kvargs_parse(params, valid_arguments);
833 if (kvlist == NULL) {
839 * If iface argument is passed we open the NICs and use them for
842 if (rte_kvargs_count(kvlist, ETH_AF_PACKET_IFACE_ARG) == 1) {
844 ret = rte_kvargs_process(kvlist, ETH_AF_PACKET_IFACE_ARG,
845 &open_packet_iface, &sockfd);
850 ret = rte_eth_from_packet(name, &sockfd, numa_node, kvlist);
851 close(sockfd); /* no longer needed */
854 rte_kvargs_free(kvlist);
859 rte_pmd_af_packet_remove(const char *name)
861 struct rte_eth_dev *eth_dev = NULL;
862 struct pmd_internals *internals;
865 RTE_LOG(INFO, PMD, "Closing AF_PACKET ethdev on numa socket %u\n",
871 /* find the ethdev entry */
872 eth_dev = rte_eth_dev_allocated(name);
876 internals = eth_dev->data->dev_private;
877 for (q = 0; q < internals->nb_queues; q++) {
878 rte_free(internals->rx_queue[q].rd);
879 rte_free(internals->tx_queue[q].rd);
882 rte_free(eth_dev->data->dev_private);
883 rte_free(eth_dev->data);
885 rte_eth_dev_release_port(eth_dev);
890 static struct rte_vdev_driver pmd_af_packet_drv = {
891 .probe = rte_pmd_af_packet_probe,
892 .remove = rte_pmd_af_packet_remove,
895 RTE_PMD_REGISTER_VDEV(net_af_packet, pmd_af_packet_drv);
896 RTE_PMD_REGISTER_ALIAS(net_af_packet, eth_af_packet);
897 RTE_PMD_REGISTER_PARAM_STRING(net_af_packet,