330f11add5
Signed-off-by: Rich Lane <rich.lane@bigswitch.com> Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com> Acked-by: John W. Linville <linville@tuxdriver.com>
900 lines
24 KiB
C
900 lines
24 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2014 John W. Linville <linville@tuxdriver.com>
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*
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* Originally based upon librte_pmd_pcap code:
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*
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* Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
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* Copyright(c) 2014 6WIND S.A.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <rte_mbuf.h>
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#include <rte_ethdev.h>
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#include <rte_malloc.h>
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#include <rte_kvargs.h>
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#include <rte_dev.h>
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#include <linux/if_ether.h>
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#include <linux/if_packet.h>
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#include <arpa/inet.h>
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#include <net/if.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <poll.h>
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#define ETH_AF_PACKET_IFACE_ARG "iface"
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#define ETH_AF_PACKET_NUM_Q_ARG "qpairs"
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#define ETH_AF_PACKET_BLOCKSIZE_ARG "blocksz"
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#define ETH_AF_PACKET_FRAMESIZE_ARG "framesz"
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#define ETH_AF_PACKET_FRAMECOUNT_ARG "framecnt"
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#define DFLT_BLOCK_SIZE (1 << 12)
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#define DFLT_FRAME_SIZE (1 << 11)
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#define DFLT_FRAME_COUNT (1 << 9)
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#define RTE_PMD_AF_PACKET_MAX_RINGS 16
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struct pkt_rx_queue {
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int sockfd;
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struct iovec *rd;
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uint8_t *map;
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unsigned int framecount;
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unsigned int framenum;
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struct rte_mempool *mb_pool;
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uint8_t in_port;
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volatile unsigned long rx_pkts;
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volatile unsigned long err_pkts;
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volatile unsigned long rx_bytes;
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};
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struct pkt_tx_queue {
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int sockfd;
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struct iovec *rd;
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uint8_t *map;
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unsigned int framecount;
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unsigned int framenum;
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volatile unsigned long tx_pkts;
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volatile unsigned long err_pkts;
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volatile unsigned long tx_bytes;
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};
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struct pmd_internals {
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unsigned nb_queues;
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int if_index;
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struct ether_addr eth_addr;
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struct tpacket_req req;
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struct pkt_rx_queue rx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
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struct pkt_tx_queue tx_queue[RTE_PMD_AF_PACKET_MAX_RINGS];
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};
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static const char *valid_arguments[] = {
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ETH_AF_PACKET_IFACE_ARG,
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ETH_AF_PACKET_NUM_Q_ARG,
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ETH_AF_PACKET_BLOCKSIZE_ARG,
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ETH_AF_PACKET_FRAMESIZE_ARG,
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ETH_AF_PACKET_FRAMECOUNT_ARG,
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NULL
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};
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static const char *drivername = "AF_PACKET PMD";
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static struct rte_eth_link pmd_link = {
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.link_speed = ETH_SPEED_NUM_10G,
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.link_duplex = ETH_LINK_FULL_DUPLEX,
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.link_status = ETH_LINK_DOWN,
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.link_autoneg = ETH_LINK_SPEED_AUTONEG
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};
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static uint16_t
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eth_af_packet_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
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{
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unsigned i;
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struct tpacket2_hdr *ppd;
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struct rte_mbuf *mbuf;
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uint8_t *pbuf;
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struct pkt_rx_queue *pkt_q = queue;
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uint16_t num_rx = 0;
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unsigned long num_rx_bytes = 0;
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unsigned int framecount, framenum;
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if (unlikely(nb_pkts == 0))
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return 0;
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/*
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* Reads the given number of packets from the AF_PACKET socket one by
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* one and copies the packet data into a newly allocated mbuf.
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*/
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framecount = pkt_q->framecount;
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framenum = pkt_q->framenum;
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for (i = 0; i < nb_pkts; i++) {
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/* point at the next incoming frame */
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ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
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if ((ppd->tp_status & TP_STATUS_USER) == 0)
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break;
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/* allocate the next mbuf */
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mbuf = rte_pktmbuf_alloc(pkt_q->mb_pool);
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if (unlikely(mbuf == NULL))
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break;
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/* packet will fit in the mbuf, go ahead and receive it */
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rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf) = ppd->tp_snaplen;
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pbuf = (uint8_t *) ppd + ppd->tp_mac;
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memcpy(rte_pktmbuf_mtod(mbuf, void *), pbuf, rte_pktmbuf_data_len(mbuf));
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/* release incoming frame and advance ring buffer */
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ppd->tp_status = TP_STATUS_KERNEL;
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if (++framenum >= framecount)
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framenum = 0;
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mbuf->port = pkt_q->in_port;
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/* account for the receive frame */
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bufs[i] = mbuf;
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num_rx++;
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num_rx_bytes += mbuf->pkt_len;
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}
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pkt_q->framenum = framenum;
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pkt_q->rx_pkts += num_rx;
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pkt_q->rx_bytes += num_rx_bytes;
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return num_rx;
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}
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/*
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* Callback to handle sending packets through a real NIC.
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*/
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static uint16_t
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eth_af_packet_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
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{
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struct tpacket2_hdr *ppd;
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struct rte_mbuf *mbuf;
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uint8_t *pbuf;
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unsigned int framecount, framenum;
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struct pollfd pfd;
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struct pkt_tx_queue *pkt_q = queue;
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uint16_t num_tx = 0;
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unsigned long num_tx_bytes = 0;
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int i;
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if (unlikely(nb_pkts == 0))
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return 0;
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memset(&pfd, 0, sizeof(pfd));
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pfd.fd = pkt_q->sockfd;
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pfd.events = POLLOUT;
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pfd.revents = 0;
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framecount = pkt_q->framecount;
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framenum = pkt_q->framenum;
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ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
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for (i = 0; i < nb_pkts; i++) {
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/* point at the next incoming frame */
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if ((ppd->tp_status != TP_STATUS_AVAILABLE) &&
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(poll(&pfd, 1, -1) < 0))
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continue;
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/* copy the tx frame data */
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mbuf = bufs[num_tx];
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pbuf = (uint8_t *) ppd + TPACKET2_HDRLEN -
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sizeof(struct sockaddr_ll);
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memcpy(pbuf, rte_pktmbuf_mtod(mbuf, void*), rte_pktmbuf_data_len(mbuf));
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ppd->tp_len = ppd->tp_snaplen = rte_pktmbuf_data_len(mbuf);
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/* release incoming frame and advance ring buffer */
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ppd->tp_status = TP_STATUS_SEND_REQUEST;
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if (++framenum >= framecount)
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framenum = 0;
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ppd = (struct tpacket2_hdr *) pkt_q->rd[framenum].iov_base;
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num_tx++;
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num_tx_bytes += mbuf->pkt_len;
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rte_pktmbuf_free(mbuf);
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}
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/* kick-off transmits */
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if (sendto(pkt_q->sockfd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1)
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return 0; /* error sending -- no packets transmitted */
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pkt_q->framenum = framenum;
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pkt_q->tx_pkts += num_tx;
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pkt_q->err_pkts += nb_pkts - num_tx;
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pkt_q->tx_bytes += num_tx_bytes;
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return num_tx;
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}
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static int
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eth_dev_start(struct rte_eth_dev *dev)
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{
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dev->data->dev_link.link_status = ETH_LINK_UP;
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return 0;
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}
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/*
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* This function gets called when the current port gets stopped.
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*/
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static void
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eth_dev_stop(struct rte_eth_dev *dev)
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{
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unsigned i;
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int sockfd;
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struct pmd_internals *internals = dev->data->dev_private;
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for (i = 0; i < internals->nb_queues; i++) {
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sockfd = internals->rx_queue[i].sockfd;
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if (sockfd != -1)
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close(sockfd);
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sockfd = internals->tx_queue[i].sockfd;
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if (sockfd != -1)
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close(sockfd);
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}
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dev->data->dev_link.link_status = ETH_LINK_DOWN;
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}
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static int
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eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
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{
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return 0;
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}
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static void
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eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
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{
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struct pmd_internals *internals = dev->data->dev_private;
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dev_info->driver_name = drivername;
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dev_info->if_index = internals->if_index;
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dev_info->max_mac_addrs = 1;
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dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN;
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dev_info->max_rx_queues = (uint16_t)internals->nb_queues;
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dev_info->max_tx_queues = (uint16_t)internals->nb_queues;
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dev_info->min_rx_bufsize = 0;
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dev_info->pci_dev = NULL;
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}
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static void
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eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
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{
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unsigned i, imax;
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unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
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unsigned long rx_bytes_total = 0, tx_bytes_total = 0;
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const struct pmd_internals *internal = dev->data->dev_private;
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imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
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internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
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for (i = 0; i < imax; i++) {
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igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
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igb_stats->q_ibytes[i] = internal->rx_queue[i].rx_bytes;
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rx_total += igb_stats->q_ipackets[i];
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rx_bytes_total += igb_stats->q_ibytes[i];
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}
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imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
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internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
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for (i = 0; i < imax; i++) {
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igb_stats->q_opackets[i] = internal->tx_queue[i].tx_pkts;
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igb_stats->q_errors[i] = internal->tx_queue[i].err_pkts;
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igb_stats->q_obytes[i] = internal->tx_queue[i].tx_bytes;
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tx_total += igb_stats->q_opackets[i];
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tx_err_total += igb_stats->q_errors[i];
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tx_bytes_total += igb_stats->q_obytes[i];
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}
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igb_stats->ipackets = rx_total;
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igb_stats->ibytes = rx_bytes_total;
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igb_stats->opackets = tx_total;
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igb_stats->oerrors = tx_err_total;
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igb_stats->obytes = tx_bytes_total;
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}
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static void
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eth_stats_reset(struct rte_eth_dev *dev)
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{
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unsigned i;
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struct pmd_internals *internal = dev->data->dev_private;
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for (i = 0; i < internal->nb_queues; i++) {
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internal->rx_queue[i].rx_pkts = 0;
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internal->rx_queue[i].rx_bytes = 0;
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}
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for (i = 0; i < internal->nb_queues; i++) {
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internal->tx_queue[i].tx_pkts = 0;
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internal->tx_queue[i].err_pkts = 0;
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internal->tx_queue[i].tx_bytes = 0;
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}
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}
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static void
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eth_dev_close(struct rte_eth_dev *dev __rte_unused)
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{
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}
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static void
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eth_queue_release(void *q __rte_unused)
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{
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}
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static int
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eth_link_update(struct rte_eth_dev *dev __rte_unused,
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int wait_to_complete __rte_unused)
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{
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return 0;
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}
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static int
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eth_rx_queue_setup(struct rte_eth_dev *dev,
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uint16_t rx_queue_id,
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uint16_t nb_rx_desc __rte_unused,
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unsigned int socket_id __rte_unused,
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const struct rte_eth_rxconf *rx_conf __rte_unused,
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struct rte_mempool *mb_pool)
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{
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struct pmd_internals *internals = dev->data->dev_private;
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struct pkt_rx_queue *pkt_q = &internals->rx_queue[rx_queue_id];
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uint16_t buf_size;
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pkt_q->mb_pool = mb_pool;
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/* Now get the space available for data in the mbuf */
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buf_size = (uint16_t)(rte_pktmbuf_data_room_size(pkt_q->mb_pool) -
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RTE_PKTMBUF_HEADROOM);
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if (ETH_FRAME_LEN > buf_size) {
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RTE_LOG(ERR, PMD,
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"%s: %d bytes will not fit in mbuf (%d bytes)\n",
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dev->data->name, ETH_FRAME_LEN, buf_size);
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return -ENOMEM;
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}
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dev->data->rx_queues[rx_queue_id] = pkt_q;
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pkt_q->in_port = dev->data->port_id;
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return 0;
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}
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static int
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eth_tx_queue_setup(struct rte_eth_dev *dev,
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uint16_t tx_queue_id,
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uint16_t nb_tx_desc __rte_unused,
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unsigned int socket_id __rte_unused,
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const struct rte_eth_txconf *tx_conf __rte_unused)
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{
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struct pmd_internals *internals = dev->data->dev_private;
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dev->data->tx_queues[tx_queue_id] = &internals->tx_queue[tx_queue_id];
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return 0;
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}
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static const struct eth_dev_ops ops = {
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.dev_start = eth_dev_start,
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.dev_stop = eth_dev_stop,
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.dev_close = eth_dev_close,
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.dev_configure = eth_dev_configure,
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.dev_infos_get = eth_dev_info,
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.rx_queue_setup = eth_rx_queue_setup,
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.tx_queue_setup = eth_tx_queue_setup,
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.rx_queue_release = eth_queue_release,
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.tx_queue_release = eth_queue_release,
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.link_update = eth_link_update,
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.stats_get = eth_stats_get,
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.stats_reset = eth_stats_reset,
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};
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/*
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* Opens an AF_PACKET socket
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*/
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static int
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open_packet_iface(const char *key __rte_unused,
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const char *value __rte_unused,
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void *extra_args)
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{
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int *sockfd = extra_args;
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/* Open an AF_PACKET socket... */
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*sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
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if (*sockfd == -1) {
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RTE_LOG(ERR, PMD, "Could not open AF_PACKET socket\n");
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return -1;
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}
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return 0;
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}
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static int
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rte_pmd_init_internals(const char *name,
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const int sockfd,
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const unsigned nb_queues,
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unsigned int blocksize,
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unsigned int blockcnt,
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unsigned int framesize,
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unsigned int framecnt,
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const unsigned numa_node,
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struct pmd_internals **internals,
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struct rte_eth_dev **eth_dev,
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struct rte_kvargs *kvlist)
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{
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struct rte_eth_dev_data *data = NULL;
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struct rte_kvargs_pair *pair = NULL;
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struct ifreq ifr;
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size_t ifnamelen;
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unsigned k_idx;
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struct sockaddr_ll sockaddr;
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struct tpacket_req *req;
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struct pkt_rx_queue *rx_queue;
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struct pkt_tx_queue *tx_queue;
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int rc, tpver, discard;
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int qsockfd = -1;
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unsigned int i, q, rdsize;
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int fanout_arg __rte_unused, bypass __rte_unused;
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for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
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pair = &kvlist->pairs[k_idx];
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if (strstr(pair->key, ETH_AF_PACKET_IFACE_ARG) != NULL)
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break;
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}
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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, RTE_ETH_DEV_VIRTUAL);
|
|
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_devinit(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_devuninit(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_driver pmd_af_packet_drv = {
|
|
.name = "eth_af_packet",
|
|
.type = PMD_VDEV,
|
|
.init = rte_pmd_af_packet_devinit,
|
|
.uninit = rte_pmd_af_packet_devuninit,
|
|
};
|
|
|
|
PMD_REGISTER_DRIVER(pmd_af_packet_drv);
|