/*- * BSD LICENSE * * Copyright(c) 2014 John W. Linville * * Originally based upon librte_pmd_pcap code: * * Copyright(c) 2010-2015 Intel Corporation. All rights reserved. * Copyright(c) 2014 6WIND S.A. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name of Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define ETH_AF_PACKET_IFACE_ARG "iface" #define ETH_AF_PACKET_NUM_Q_ARG "qpairs" #define ETH_AF_PACKET_BLOCKSIZE_ARG "blocksz" #define ETH_AF_PACKET_FRAMESIZE_ARG "framesz" #define ETH_AF_PACKET_FRAMECOUNT_ARG "framecnt" #define DFLT_BLOCK_SIZE (1 << 12) #define DFLT_FRAME_SIZE (1 << 11) #define DFLT_FRAME_COUNT (1 << 9) #define RTE_PMD_AF_PACKET_MAX_RINGS 16 struct pkt_rx_queue { int sockfd; struct iovec *rd; uint8_t *map; unsigned int framecount; unsigned int framenum; struct rte_mempool *mb_pool; uint8_t in_port; volatile unsigned long rx_pkts; volatile unsigned long err_pkts; volatile unsigned long rx_bytes; }; struct pkt_tx_queue { int sockfd; struct iovec *rd; uint8_t *map; unsigned int framecount; unsigned int framenum; volatile unsigned long tx_pkts; volatile unsigned long err_pkts; volatile unsigned long tx_bytes; }; struct pmd_internals { unsigned nb_queues; int if_index; struct ether_addr eth_addr; struct tpacket_req req; struct pkt_rx_queue rx_queue[RTE_PMD_AF_PACKET_MAX_RINGS]; struct pkt_tx_queue tx_queue[RTE_PMD_AF_PACKET_MAX_RINGS]; }; static const char *valid_arguments[] = { ETH_AF_PACKET_IFACE_ARG, ETH_AF_PACKET_NUM_Q_ARG, ETH_AF_PACKET_BLOCKSIZE_ARG, ETH_AF_PACKET_FRAMESIZE_ARG, ETH_AF_PACKET_FRAMECOUNT_ARG, NULL }; static const char *drivername = "AF_PACKET PMD"; static struct rte_eth_link pmd_link = { .link_speed = ETH_SPEED_NUM_10G, .link_duplex = ETH_LINK_FULL_DUPLEX, .link_status = ETH_LINK_DOWN, .link_autoneg = ETH_LINK_SPEED_AUTONEG }; static uint16_t eth_af_packet_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) { unsigned i; struct tpacket2_hdr *ppd; struct rte_mbuf *mbuf; uint8_t *pbuf; struct pkt_rx_queue *pkt_q = queue; uint16_t num_rx = 0; unsigned long num_rx_bytes = 0; unsigned int framecount, framenum; if (unlikely(nb_pkts == 0)) return 0; /* * Reads the given number of packets from the AF_PACKET socket one by * one and copies the packet data into a newly allocated mbuf. */ framecount = pkt_q->framecount; framenum = pkt_q->framenum; for (i = 0; i < nb_pkts; i++) { /* point at the next incoming frame */ ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base; if ((ppd->tp_status & TP_STATUS_USER) == 0) break; /* allocate the next mbuf */ mbuf = rte_pktmbuf_alloc(pkt_q->mb_pool); if (unlikely(mbuf == NULL)) break; /* packet will fit in the mbuf, go ahead and receive it */ rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf) = ppd->tp_snaplen; pbuf = (uint8_t *) ppd + ppd->tp_mac; memcpy(rte_pktmbuf_mtod(mbuf, void *), pbuf, rte_pktmbuf_data_len(mbuf)); /* release incoming frame and advance ring buffer */ ppd->tp_status = TP_STATUS_KERNEL; if (++framenum >= framecount) framenum = 0; mbuf->port = pkt_q->in_port; /* account for the receive frame */ bufs[i] = mbuf; num_rx++; num_rx_bytes += mbuf->pkt_len; } pkt_q->framenum = framenum; pkt_q->rx_pkts += num_rx; pkt_q->rx_bytes += num_rx_bytes; return num_rx; } /* * Callback to handle sending packets through a real NIC. */ static uint16_t eth_af_packet_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) { struct tpacket2_hdr *ppd; struct rte_mbuf *mbuf; uint8_t *pbuf; unsigned int framecount, framenum; struct pollfd pfd; struct pkt_tx_queue *pkt_q = queue; uint16_t num_tx = 0; unsigned long num_tx_bytes = 0; int i; if (unlikely(nb_pkts == 0)) return 0; memset(&pfd, 0, sizeof(pfd)); pfd.fd = pkt_q->sockfd; pfd.events = POLLOUT; pfd.revents = 0; framecount = pkt_q->framecount; framenum = pkt_q->framenum; ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base; for (i = 0; i < nb_pkts; i++) { /* point at the next incoming frame */ if ((ppd->tp_status != TP_STATUS_AVAILABLE) && (poll(&pfd, 1, -1) < 0)) continue; /* copy the tx frame data */ mbuf = bufs[num_tx]; pbuf = (uint8_t *) ppd + TPACKET2_HDRLEN - sizeof(struct sockaddr_ll); memcpy(pbuf, rte_pktmbuf_mtod(mbuf, void*), rte_pktmbuf_data_len(mbuf)); ppd->tp_len = ppd->tp_snaplen = rte_pktmbuf_data_len(mbuf); /* release incoming frame and advance ring buffer */ ppd->tp_status = TP_STATUS_SEND_REQUEST; if (++framenum >= framecount) framenum = 0; ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base; num_tx++; num_tx_bytes += mbuf->pkt_len; rte_pktmbuf_free(mbuf); } /* kick-off transmits */ if (sendto(pkt_q->sockfd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1) return 0; /* error sending -- no packets transmitted */ pkt_q->framenum = framenum; pkt_q->tx_pkts += num_tx; pkt_q->err_pkts += nb_pkts - num_tx; pkt_q->tx_bytes += num_tx_bytes; return num_tx; } static int eth_dev_start(struct rte_eth_dev *dev) { dev->data->dev_link.link_status = ETH_LINK_UP; return 0; } /* * This function gets called when the current port gets stopped. */ static void eth_dev_stop(struct rte_eth_dev *dev) { unsigned i; int sockfd; struct pmd_internals *internals = dev->data->dev_private; for (i = 0; i < internals->nb_queues; i++) { sockfd = internals->rx_queue[i].sockfd; if (sockfd != -1) close(sockfd); /* Prevent use after free in case tx fd == rx fd */ if (sockfd != internals->tx_queue[i].sockfd) { sockfd = internals->tx_queue[i].sockfd; if (sockfd != -1) close(sockfd); } internals->rx_queue[i].sockfd = -1; internals->tx_queue[i].sockfd = -1; } dev->data->dev_link.link_status = ETH_LINK_DOWN; } static int eth_dev_configure(struct rte_eth_dev *dev __rte_unused) { return 0; } static void eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) { struct pmd_internals *internals = dev->data->dev_private; dev_info->driver_name = drivername; dev_info->if_index = internals->if_index; dev_info->max_mac_addrs = 1; dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN; dev_info->max_rx_queues = (uint16_t)internals->nb_queues; dev_info->max_tx_queues = (uint16_t)internals->nb_queues; dev_info->min_rx_bufsize = 0; dev_info->pci_dev = NULL; } static void eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats) { unsigned i, imax; unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0; unsigned long rx_bytes_total = 0, tx_bytes_total = 0; const struct pmd_internals *internal = dev->data->dev_private; imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ? internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS); for (i = 0; i < imax; i++) { igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts; igb_stats->q_ibytes[i] = internal->rx_queue[i].rx_bytes; rx_total += igb_stats->q_ipackets[i]; rx_bytes_total += igb_stats->q_ibytes[i]; } imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ? internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS); for (i = 0; i < imax; i++) { igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts; igb_stats->q_errors[i] = internal->tx_queue[i].err_pkts; igb_stats->q_obytes[i] = internal->tx_queue[i].tx_bytes; tx_total += igb_stats->q_opackets[i]; tx_err_total += igb_stats->q_errors[i]; tx_bytes_total += igb_stats->q_obytes[i]; } igb_stats->ipackets = rx_total; igb_stats->ibytes = rx_bytes_total; igb_stats->opackets = tx_total; igb_stats->oerrors = tx_err_total; igb_stats->obytes = tx_bytes_total; } static void eth_stats_reset(struct rte_eth_dev *dev) { unsigned i; struct pmd_internals *internal = dev->data->dev_private; for (i = 0; i < internal->nb_queues; i++) { internal->rx_queue[i].rx_pkts = 0; internal->rx_queue[i].rx_bytes = 0; } for (i = 0; i < internal->nb_queues; i++) { internal->tx_queue[i].tx_pkts = 0; internal->tx_queue[i].err_pkts = 0; internal->tx_queue[i].tx_bytes = 0; } } static void eth_dev_close(struct rte_eth_dev *dev __rte_unused) { } static void eth_queue_release(void *q __rte_unused) { } static int eth_link_update(struct rte_eth_dev *dev __rte_unused, int wait_to_complete __rte_unused) { return 0; } static int eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id, uint16_t nb_rx_desc __rte_unused, unsigned int socket_id __rte_unused, const struct rte_eth_rxconf *rx_conf __rte_unused, struct rte_mempool *mb_pool) { struct pmd_internals *internals = dev->data->dev_private; struct pkt_rx_queue *pkt_q = &internals->rx_queue[rx_queue_id]; uint16_t buf_size; pkt_q->mb_pool = mb_pool; /* Now get the space available for data in the mbuf */ buf_size = (uint16_t)(rte_pktmbuf_data_room_size(pkt_q->mb_pool) - RTE_PKTMBUF_HEADROOM); if (ETH_FRAME_LEN > buf_size) { RTE_LOG(ERR, PMD, "%s: %d bytes will not fit in mbuf (%d bytes)\n", dev->data->name, ETH_FRAME_LEN, buf_size); return -ENOMEM; } dev->data->rx_queues[rx_queue_id] = pkt_q; pkt_q->in_port = dev->data->port_id; return 0; } static int eth_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id, uint16_t nb_tx_desc __rte_unused, unsigned int socket_id __rte_unused, const struct rte_eth_txconf *tx_conf __rte_unused) { struct pmd_internals *internals = dev->data->dev_private; dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id]; return 0; } static const struct eth_dev_ops ops = { .dev_start = eth_dev_start, .dev_stop = eth_dev_stop, .dev_close = eth_dev_close, .dev_configure = eth_dev_configure, .dev_infos_get = eth_dev_info, .rx_queue_setup = eth_rx_queue_setup, .tx_queue_setup = eth_tx_queue_setup, .rx_queue_release = eth_queue_release, .tx_queue_release = eth_queue_release, .link_update = eth_link_update, .stats_get = eth_stats_get, .stats_reset = eth_stats_reset, }; /* * Opens an AF_PACKET socket */ static int open_packet_iface(const char *key __rte_unused, const char *value __rte_unused, void *extra_args) { int *sockfd = extra_args; /* Open an AF_PACKET socket... */ *sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); if (*sockfd == -1) { RTE_LOG(ERR, PMD, "Could not open AF_PACKET socket\n"); return -1; } return 0; } static int rte_pmd_init_internals(const char *name, const int sockfd, const unsigned nb_queues, unsigned int blocksize, unsigned int blockcnt, unsigned int framesize, unsigned int framecnt, const unsigned numa_node, struct pmd_internals **internals, struct rte_eth_dev **eth_dev, struct rte_kvargs *kvlist) { struct rte_eth_dev_data *data = NULL; struct rte_kvargs_pair *pair = NULL; struct ifreq ifr; size_t ifnamelen; unsigned k_idx; struct sockaddr_ll sockaddr; struct tpacket_req *req; struct pkt_rx_queue *rx_queue; struct pkt_tx_queue *tx_queue; int rc, tpver, discard; int qsockfd = -1; unsigned int i, q, rdsize; int fanout_arg __rte_unused, bypass __rte_unused; for (k_idx = 0; k_idx < kvlist->count; k_idx++) { pair = &kvlist->pairs[k_idx]; if (strstr(pair->key, ETH_AF_PACKET_IFACE_ARG) != NULL) break; } if (pair == NULL) { RTE_LOG(ERR, PMD, "%s: no interface specified for AF_PACKET ethdev\n", name); goto error_early; } RTE_LOG(INFO, PMD, "%s: creating AF_PACKET-backed ethdev on numa socket %u\n", name, numa_node); /* * now do all data allocation - for eth_dev structure, dummy pci driver * and internal (private) data */ data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node); if (data == NULL) goto error_early; *internals = rte_zmalloc_socket(name, sizeof(**internals), 0, numa_node); if (*internals == NULL) goto error_early; for (q = 0; q < nb_queues; q++) { (*internals)->rx_queue[q].map = MAP_FAILED; (*internals)->tx_queue[q].map = MAP_FAILED; } req = &((*internals)->req); req->tp_block_size = blocksize; req->tp_block_nr = blockcnt; req->tp_frame_size = framesize; req->tp_frame_nr = framecnt; ifnamelen = strlen(pair->value); if (ifnamelen < sizeof(ifr.ifr_name)) { memcpy(ifr.ifr_name, pair->value, ifnamelen); ifr.ifr_name[ifnamelen] = '\0'; } else { RTE_LOG(ERR, PMD, "%s: I/F name too long (%s)\n", name, pair->value); goto error_early; } if (ioctl(sockfd, SIOCGIFINDEX, &ifr) == -1) { RTE_LOG(ERR, PMD, "%s: ioctl failed (SIOCGIFINDEX)\n", name); goto error_early; } (*internals)->if_index = ifr.ifr_ifindex; if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) == -1) { RTE_LOG(ERR, PMD, "%s: ioctl failed (SIOCGIFHWADDR)\n", name); goto error_early; } memcpy(&(*internals)->eth_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN); memset(&sockaddr, 0, sizeof(sockaddr)); sockaddr.sll_family = AF_PACKET; sockaddr.sll_protocol = htons(ETH_P_ALL); sockaddr.sll_ifindex = (*internals)->if_index; #if defined(PACKET_FANOUT) fanout_arg = (getpid() ^ (*internals)->if_index) & 0xffff; fanout_arg |= (PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_DEFRAG) << 16; #if defined(PACKET_FANOUT_FLAG_ROLLOVER) fanout_arg |= PACKET_FANOUT_FLAG_ROLLOVER << 16; #endif #endif for (q = 0; q < nb_queues; q++) { /* Open an AF_PACKET socket for this queue... */ qsockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); if (qsockfd == -1) { RTE_LOG(ERR, PMD, "%s: could not open AF_PACKET socket\n", name); return -1; } tpver = TPACKET_V2; rc = setsockopt(qsockfd, SOL_PACKET, PACKET_VERSION, &tpver, sizeof(tpver)); if (rc == -1) { RTE_LOG(ERR, PMD, "%s: could not set PACKET_VERSION on AF_PACKET " "socket for %s\n", name, pair->value); goto error; } discard = 1; rc = setsockopt(qsockfd, SOL_PACKET, PACKET_LOSS, &discard, sizeof(discard)); if (rc == -1) { RTE_LOG(ERR, PMD, "%s: could not set PACKET_LOSS on " "AF_PACKET socket for %s\n", name, pair->value); goto error; } #if defined(PACKET_QDISC_BYPASS) bypass = 1; rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS, &bypass, sizeof(bypass)); if (rc == -1) { RTE_LOG(ERR, PMD, "%s: could not set PACKET_QDISC_BYPASS " "on AF_PACKET socket for %s\n", name, pair->value); goto error; } #endif rc = setsockopt(qsockfd, SOL_PACKET, PACKET_RX_RING, req, sizeof(*req)); if (rc == -1) { RTE_LOG(ERR, PMD, "%s: could not set PACKET_RX_RING on AF_PACKET " "socket for %s\n", name, pair->value); goto error; } rc = setsockopt(qsockfd, SOL_PACKET, PACKET_TX_RING, req, sizeof(*req)); if (rc == -1) { RTE_LOG(ERR, PMD, "%s: could not set PACKET_TX_RING on AF_PACKET " "socket for %s\n", name, pair->value); goto error; } rx_queue = &((*internals)->rx_queue[q]); rx_queue->framecount = req->tp_frame_nr; rx_queue->map = mmap(NULL, 2 * req->tp_block_size * req->tp_block_nr, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED, qsockfd, 0); if (rx_queue->map == MAP_FAILED) { RTE_LOG(ERR, PMD, "%s: call to mmap failed on AF_PACKET socket for %s\n", name, pair->value); goto error; } /* rdsize is same for both Tx and Rx */ rdsize = req->tp_frame_nr * sizeof(*(rx_queue->rd)); rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node); if (rx_queue->rd == NULL) goto error; for (i = 0; i < req->tp_frame_nr; ++i) { rx_queue->rd[i].iov_base = rx_queue->map + (i * framesize); rx_queue->rd[i].iov_len = req->tp_frame_size; } rx_queue->sockfd = qsockfd; tx_queue = &((*internals)->tx_queue[q]); tx_queue->framecount = req->tp_frame_nr; tx_queue->map = rx_queue->map + req->tp_block_size * req->tp_block_nr; tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node); if (tx_queue->rd == NULL) goto error; for (i = 0; i < req->tp_frame_nr; ++i) { tx_queue->rd[i].iov_base = tx_queue->map + (i * framesize); tx_queue->rd[i].iov_len = req->tp_frame_size; } tx_queue->sockfd = qsockfd; rc = bind(qsockfd, (const struct sockaddr*)&sockaddr, sizeof(sockaddr)); if (rc == -1) { RTE_LOG(ERR, PMD, "%s: could not bind AF_PACKET socket to %s\n", name, pair->value); goto error; } #if defined(PACKET_FANOUT) rc = setsockopt(qsockfd, SOL_PACKET, PACKET_FANOUT, &fanout_arg, sizeof(fanout_arg)); if (rc == -1) { RTE_LOG(ERR, PMD, "%s: could not set PACKET_FANOUT on AF_PACKET socket " "for %s\n", name, pair->value); goto error; } #endif } /* reserve an ethdev entry */ *eth_dev = rte_eth_dev_allocate(name); if (*eth_dev == NULL) goto error; /* * now put it all together * - store queue data in internals, * - store numa_node in eth_dev * - point eth_dev_data to internals * - and point eth_dev structure to new eth_dev_data structure */ (*internals)->nb_queues = nb_queues; data->dev_private = *internals; data->port_id = (*eth_dev)->data->port_id; data->nb_rx_queues = (uint16_t)nb_queues; data->nb_tx_queues = (uint16_t)nb_queues; data->dev_link = pmd_link; data->mac_addrs = &(*internals)->eth_addr; strncpy(data->name, (*eth_dev)->data->name, strlen((*eth_dev)->data->name)); (*eth_dev)->data = data; (*eth_dev)->dev_ops = &ops; (*eth_dev)->driver = NULL; (*eth_dev)->data->dev_flags = RTE_ETH_DEV_DETACHABLE; (*eth_dev)->data->drv_name = drivername; (*eth_dev)->data->kdrv = RTE_KDRV_NONE; (*eth_dev)->data->numa_node = numa_node; return 0; error: if (qsockfd != -1) close(qsockfd); for (q = 0; q < nb_queues; q++) { munmap((*internals)->rx_queue[q].map, 2 * req->tp_block_size * req->tp_block_nr); rte_free((*internals)->rx_queue[q].rd); rte_free((*internals)->tx_queue[q].rd); if (((*internals)->rx_queue[q].sockfd != 0) && ((*internals)->rx_queue[q].sockfd != qsockfd)) close((*internals)->rx_queue[q].sockfd); } rte_free(*internals); error_early: rte_free(data); return -1; } static int rte_eth_from_packet(const char *name, int const *sockfd, const unsigned numa_node, struct rte_kvargs *kvlist) { struct pmd_internals *internals = NULL; struct rte_eth_dev *eth_dev = NULL; struct rte_kvargs_pair *pair = NULL; unsigned k_idx; unsigned int blockcount; unsigned int blocksize = DFLT_BLOCK_SIZE; unsigned int framesize = DFLT_FRAME_SIZE; unsigned int framecount = DFLT_FRAME_COUNT; unsigned int qpairs = 1; /* do some parameter checking */ if (*sockfd < 0) return -1; /* * Walk arguments for configurable settings */ for (k_idx = 0; k_idx < kvlist->count; k_idx++) { pair = &kvlist->pairs[k_idx]; if (strstr(pair->key, ETH_AF_PACKET_NUM_Q_ARG) != NULL) { qpairs = atoi(pair->value); if (qpairs < 1 || qpairs > RTE_PMD_AF_PACKET_MAX_RINGS) { RTE_LOG(ERR, PMD, "%s: invalid qpairs value\n", name); return -1; } continue; } if (strstr(pair->key, ETH_AF_PACKET_BLOCKSIZE_ARG) != NULL) { blocksize = atoi(pair->value); if (!blocksize) { RTE_LOG(ERR, PMD, "%s: invalid blocksize value\n", name); return -1; } continue; } if (strstr(pair->key, ETH_AF_PACKET_FRAMESIZE_ARG) != NULL) { framesize = atoi(pair->value); if (!framesize) { RTE_LOG(ERR, PMD, "%s: invalid framesize value\n", name); return -1; } continue; } if (strstr(pair->key, ETH_AF_PACKET_FRAMECOUNT_ARG) != NULL) { framecount = atoi(pair->value); if (!framecount) { RTE_LOG(ERR, PMD, "%s: invalid framecount value\n", name); return -1; } continue; } } if (framesize > blocksize) { RTE_LOG(ERR, PMD, "%s: AF_PACKET MMAP frame size exceeds block size!\n", name); return -1; } blockcount = framecount / (blocksize / framesize); if (!blockcount) { RTE_LOG(ERR, PMD, "%s: invalid AF_PACKET MMAP parameters\n", name); return -1; } RTE_LOG(INFO, PMD, "%s: AF_PACKET MMAP parameters:\n", name); RTE_LOG(INFO, PMD, "%s:\tblock size %d\n", name, blocksize); RTE_LOG(INFO, PMD, "%s:\tblock count %d\n", name, blockcount); RTE_LOG(INFO, PMD, "%s:\tframe size %d\n", name, framesize); RTE_LOG(INFO, PMD, "%s:\tframe count %d\n", name, framecount); if (rte_pmd_init_internals(name, *sockfd, qpairs, blocksize, blockcount, framesize, framecount, numa_node, &internals, ð_dev, kvlist) < 0) return -1; eth_dev->rx_pkt_burst = eth_af_packet_rx; eth_dev->tx_pkt_burst = eth_af_packet_tx; return 0; } static int rte_pmd_af_packet_probe(const char *name, const char *params) { unsigned numa_node; int ret = 0; struct rte_kvargs *kvlist; int sockfd = -1; RTE_LOG(INFO, PMD, "Initializing pmd_af_packet for %s\n", name); numa_node = rte_socket_id(); kvlist = rte_kvargs_parse(params, valid_arguments); if (kvlist == NULL) { ret = -1; goto exit; } /* * If iface argument is passed we open the NICs and use them for * reading / writing */ if (rte_kvargs_count(kvlist, ETH_AF_PACKET_IFACE_ARG) == 1) { ret = rte_kvargs_process(kvlist, ETH_AF_PACKET_IFACE_ARG, &open_packet_iface, &sockfd); if (ret < 0) goto exit; } ret = rte_eth_from_packet(name, &sockfd, numa_node, kvlist); close(sockfd); /* no longer needed */ exit: rte_kvargs_free(kvlist); return ret; } static int rte_pmd_af_packet_remove(const char *name) { struct rte_eth_dev *eth_dev = NULL; struct pmd_internals *internals; unsigned q; RTE_LOG(INFO, PMD, "Closing AF_PACKET ethdev on numa socket %u\n", rte_socket_id()); if (name == NULL) return -1; /* find the ethdev entry */ eth_dev = rte_eth_dev_allocated(name); if (eth_dev == NULL) return -1; internals = eth_dev->data->dev_private; for (q = 0; q < internals->nb_queues; q++) { rte_free(internals->rx_queue[q].rd); rte_free(internals->tx_queue[q].rd); } rte_free(eth_dev->data->dev_private); rte_free(eth_dev->data); rte_eth_dev_release_port(eth_dev); return 0; } static struct rte_vdev_driver pmd_af_packet_drv = { .probe = rte_pmd_af_packet_probe, .remove = rte_pmd_af_packet_remove, }; RTE_PMD_REGISTER_VDEV(net_af_packet, pmd_af_packet_drv); RTE_PMD_REGISTER_ALIAS(net_af_packet, eth_af_packet); RTE_PMD_REGISTER_PARAM_STRING(net_af_packet, "iface= " "qpairs= " "blocksz= " "framesz= " "framecnt=");