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_branch_prediction.h> 28 #include <rte_mempool.h> 29 #include <rte_mbuf.h> 30 #include <rte_interrupts.h> 31 #include <rte_pci.h> 32 #include <rte_ether.h> 33 #include <rte_ethdev.h> 34 #include <rte_ip.h> 35 #include <rte_string_fns.h> 36 #include <rte_flow.h> 37 38 #include "testpmd.h" 39 #if defined(RTE_ARCH_X86) 40 #include "macswap_sse.h" 41 #elif defined(__ARM_NEON) 42 #include "macswap_neon.h" 43 #else 44 #include "macswap.h" 45 #endif 46 47 /* 48 * MAC swap forwarding mode: Swap the source and the destination Ethernet 49 * addresses of packets before forwarding them. 50 */ 51 static void 52 pkt_burst_mac_swap(struct fwd_stream *fs) 53 { 54 struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; 55 struct rte_port *txp; 56 uint16_t nb_rx; 57 uint16_t nb_tx; 58 uint32_t retry; 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 75 do_macswap(pkts_burst, nb_rx, txp); 76 77 nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx); 78 /* 79 * Retry if necessary 80 */ 81 if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) { 82 retry = 0; 83 while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) { 84 rte_delay_us(burst_tx_delay_time); 85 nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue, 86 &pkts_burst[nb_tx], nb_rx - nb_tx); 87 } 88 } 89 fs->tx_packets += nb_tx; 90 inc_tx_burst_stats(fs, nb_tx); 91 if (unlikely(nb_tx < nb_rx)) { 92 fs->fwd_dropped += (nb_rx - nb_tx); 93 do { 94 rte_pktmbuf_free(pkts_burst[nb_tx]); 95 } while (++nb_tx < nb_rx); 96 } 97 get_end_cycles(fs, start_tsc); 98 } 99 100 struct fwd_engine mac_swap_engine = { 101 .fwd_mode_name = "macswap", 102 .port_fwd_begin = NULL, 103 .port_fwd_end = NULL, 104 .packet_fwd = pkt_burst_mac_swap, 105 }; 106