app/test-pmd/macswap.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2014-2020 Mellanox Technologies, Ltd
   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 #if defined(RTE_ARCH_X86)
  41 #include "macswap_sse.h"
  42 #elif defined(RTE_MACHINE_CPUFLAG_NEON)
  43 #include "macswap_neon.h"
  44 #else
  45 #include "macswap.h"
  46 #endif
  47
  48 /*
  49  * MAC swap forwarding mode: Swap the source and the destination Ethernet
  50  * addresses of packets before forwarding them.
  51  */
  52 static void
  53 pkt_burst_mac_swap(struct fwd_stream *fs)
  54 {
  55         struct rte_mbuf  *pkts_burst[MAX_PKT_BURST];
  56         struct rte_port  *txp;
  57         uint16_t nb_rx;
  58         uint16_t nb_tx;
  59         uint32_t retry;
  60 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
  61         uint64_t start_tsc;
  62         uint64_t end_tsc;
  63         uint64_t core_cycles;
  64 #endif
  65
  66 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
  67         start_tsc = rte_rdtsc();
  68 #endif
  69
  70         /*
  71          * Receive a burst of packets and forward them.
  72          */
  73         nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
  74                                  nb_pkt_per_burst);
  75         if (unlikely(nb_rx == 0))
  76                 return;
  77
  78 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS
  79         fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
  80 #endif
  81         fs->rx_packets += nb_rx;
  82         txp = &ports[fs->tx_port];
  83
  84         do_macswap(pkts_burst, nb_rx, txp);
  85
  86         nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx);
  87         /*
  88          * Retry if necessary
  89          */
  90         if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
  91                 retry = 0;
  92                 while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
  93                         rte_delay_us(burst_tx_delay_time);
  94                         nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
  95                                         &pkts_burst[nb_tx], nb_rx - nb_tx);
  96                 }
  97         }
  98         fs->tx_packets += nb_tx;
  99 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS
 100         fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;
 101 #endif
 102         if (unlikely(nb_tx < nb_rx)) {
 103                 fs->fwd_dropped += (nb_rx - nb_tx);
 104                 do {
 105                         rte_pktmbuf_free(pkts_burst[nb_tx]);
 106                 } while (++nb_tx < nb_rx);
 107         }
 108 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
 109         end_tsc = rte_rdtsc();
 110         core_cycles = (end_tsc - start_tsc);
 111         fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles);
 112 #endif
 113 }
 114
 115 struct fwd_engine mac_swap_engine = {
 116         .fwd_mode_name  = "macswap",
 117         .port_fwd_begin = NULL,
 118         .port_fwd_end   = NULL,
 119         .packet_fwd     = pkt_burst_mac_swap,
 120 };