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 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS 76 fs->rx_burst_stats.pkt_burst_spread[nb_rx]++; 77 #endif 78 if (unlikely(nb_rx == 0)) 79 return; 80 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 }; 121