LXR dpdk/app/test-pmd/macfwd.c

   1/* SPDX-License-Identifier: BSD-3-Clause
   2 * Copyright(c) 2010-2014 Intel Corporation
   3 */
   4
   5#include <stdarg.h>
   6#include <string.h>
   7#include <stdio.h>
   8#include <errno.h>
   9#include <stdint.h>
  10#include <unistd.h>
  11#include <inttypes.h>
  12
  13#include <sys/queue.h>
  14#include <sys/stat.h>
  15
  16#include <rte_common.h>
  17#include <rte_byteorder.h>
  18#include <rte_log.h>
  19#include <rte_debug.h>
  20#include <rte_cycles.h>
  21#include <rte_memory.h>
  22#include <rte_memcpy.h>
  23#include <rte_launch.h>
  24#include <rte_eal.h>
  25#include <rte_per_lcore.h>
  26#include <rte_lcore.h>
  27#include <rte_atomic.h>
  28#include <rte_branch_prediction.h>
  29#include <rte_mempool.h>
  30#include <rte_mbuf.h>
  31#include <rte_interrupts.h>
  32#include <rte_pci.h>
  33#include <rte_ether.h>
  34#include <rte_ethdev.h>
  35#include <rte_ip.h>
  36#include <rte_string_fns.h>
  37#include <rte_flow.h>
  38
  39#include "testpmd.h"
  40
  41/*
  42 * Forwarding of packets in MAC mode.
  43 * Change the source and the destination Ethernet addressed of packets
  44 * before forwarding them.
  45 */
  46static void
  47pkt_burst_mac_forward(struct fwd_stream *fs)
  48{
  49        struct rte_mbuf  *pkts_burst[MAX_PKT_BURST];
  50        struct rte_port  *txp;
  51        struct rte_mbuf  *mb;
  52        struct rte_ether_hdr *eth_hdr;
  53        uint32_t retry;
  54        uint16_t nb_rx;
  55        uint16_t nb_tx;
  56        uint16_t i;
  57        uint64_t ol_flags = 0;
  58        uint64_t tx_offloads;
  59        uint64_t start_tsc = 0;
  60
  61        get_start_cycles(&start_tsc);
  62
  63        /*
  64         * Receive a burst of packets and forward them.
  65         */
  66        nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
  67                                 nb_pkt_per_burst);
  68        inc_rx_burst_stats(fs, nb_rx);
  69        if (unlikely(nb_rx == 0))
  70                return;
  71
  72        fs->rx_packets += nb_rx;
  73        txp = &ports[fs->tx_port];
  74        tx_offloads = txp->dev_conf.txmode.offloads;
  75        if (tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT)
  76                ol_flags = PKT_TX_VLAN_PKT;
  77        if (tx_offloads & DEV_TX_OFFLOAD_QINQ_INSERT)
  78                ol_flags |= PKT_TX_QINQ_PKT;
  79        if (tx_offloads & DEV_TX_OFFLOAD_MACSEC_INSERT)
  80                ol_flags |= PKT_TX_MACSEC;
  81        for (i = 0; i < nb_rx; i++) {
  82                if (likely(i < nb_rx - 1))
  83                        rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1],
  84                                                       void *));
  85                mb = pkts_burst[i];
  86                eth_hdr = rte_pktmbuf_mtod(mb, struct rte_ether_hdr *);
  87                rte_ether_addr_copy(&peer_eth_addrs[fs->peer_addr],
  88                                &eth_hdr->d_addr);
  89                rte_ether_addr_copy(&ports[fs->tx_port].eth_addr,
  90                                &eth_hdr->s_addr);
  91                mb->ol_flags &= IND_ATTACHED_MBUF | EXT_ATTACHED_MBUF;
  92                mb->ol_flags |= ol_flags;
  93                mb->l2_len = sizeof(struct rte_ether_hdr);
  94                mb->l3_len = sizeof(struct rte_ipv4_hdr);
  95                mb->vlan_tci = txp->tx_vlan_id;
  96                mb->vlan_tci_outer = txp->tx_vlan_id_outer;
  97        }
  98        nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx);
  99        /*
 100         * Retry if necessary
 101         */
 102        if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
 103                retry = 0;
 104                while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
 105                        rte_delay_us(burst_tx_delay_time);
 106                        nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
 107                                        &pkts_burst[nb_tx], nb_rx - nb_tx);
 108                }
 109        }
 110
 111        fs->tx_packets += nb_tx;
 112        inc_tx_burst_stats(fs, nb_tx);
 113        if (unlikely(nb_tx < nb_rx)) {
 114                fs->fwd_dropped += (nb_rx - nb_tx);
 115                do {
 116                        rte_pktmbuf_free(pkts_burst[nb_tx]);
 117                } while (++nb_tx < nb_rx);
 118        }
 119
 120        get_end_cycles(fs, start_tsc);
 121}
 122
 123struct fwd_engine mac_fwd_engine = {
 124        .fwd_mode_name  = "mac",
 125        .port_fwd_begin = NULL,
 126        .port_fwd_end   = NULL,
 127        .packet_fwd     = pkt_burst_mac_forward,
 128};
 129