1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2014 Tilera Corporation. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * * Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * * Neither the name of Tilera Corporation nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #include <stdarg.h> 35 #include <string.h> 36 #include <stdio.h> 37 #include <errno.h> 38 #include <stdint.h> 39 #include <unistd.h> 40 #include <inttypes.h> 41 42 #include <sys/queue.h> 43 #include <sys/stat.h> 44 45 #include <rte_common.h> 46 #include <rte_byteorder.h> 47 #include <rte_log.h> 48 #include <rte_debug.h> 49 #include <rte_cycles.h> 50 #include <rte_memory.h> 51 #include <rte_memcpy.h> 52 #include <rte_launch.h> 53 #include <rte_eal.h> 54 #include <rte_per_lcore.h> 55 #include <rte_lcore.h> 56 #include <rte_atomic.h> 57 #include <rte_branch_prediction.h> 58 #include <rte_mempool.h> 59 #include <rte_mbuf.h> 60 #include <rte_interrupts.h> 61 #include <rte_pci.h> 62 #include <rte_ether.h> 63 #include <rte_ethdev.h> 64 #include <rte_ip.h> 65 #include <rte_string_fns.h> 66 #include <rte_flow.h> 67 68 #include "testpmd.h" 69 #if defined(RTE_ARCH_X86) 70 #include "macswap_sse.h" 71 #elif defined(RTE_MACHINE_CPUFLAG_NEON) 72 #include "macswap_neon.h" 73 #else 74 #include "macswap.h" 75 #endif 76 77 /* 78 * MAC swap forwarding mode: Swap the source and the destination Ethernet 79 * addresses of packets before forwarding them. 80 */ 81 static void 82 pkt_burst_mac_swap(struct fwd_stream *fs) 83 { 84 struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; 85 struct rte_port *txp; 86 uint16_t nb_rx; 87 uint16_t nb_tx; 88 uint32_t retry; 89 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES 90 uint64_t start_tsc; 91 uint64_t end_tsc; 92 uint64_t core_cycles; 93 #endif 94 95 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES 96 start_tsc = rte_rdtsc(); 97 #endif 98 99 /* 100 * Receive a burst of packets and forward them. 101 */ 102 nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst, 103 nb_pkt_per_burst); 104 if (unlikely(nb_rx == 0)) 105 return; 106 107 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS 108 fs->rx_burst_stats.pkt_burst_spread[nb_rx]++; 109 #endif 110 fs->rx_packets += nb_rx; 111 txp = &ports[fs->tx_port]; 112 113 do_macswap(pkts_burst, nb_rx, txp); 114 115 nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx); 116 /* 117 * Retry if necessary 118 */ 119 if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) { 120 retry = 0; 121 while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) { 122 rte_delay_us(burst_tx_delay_time); 123 nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue, 124 &pkts_burst[nb_tx], nb_rx - nb_tx); 125 } 126 } 127 fs->tx_packets += nb_tx; 128 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS 129 fs->tx_burst_stats.pkt_burst_spread[nb_tx]++; 130 #endif 131 if (unlikely(nb_tx < nb_rx)) { 132 fs->fwd_dropped += (nb_rx - nb_tx); 133 do { 134 rte_pktmbuf_free(pkts_burst[nb_tx]); 135 } while (++nb_tx < nb_rx); 136 } 137 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES 138 end_tsc = rte_rdtsc(); 139 core_cycles = (end_tsc - start_tsc); 140 fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles); 141 #endif 142 } 143 144 struct fwd_engine mac_swap_engine = { 145 .fwd_mode_name = "macswap", 146 .port_fwd_begin = NULL, 147 .port_fwd_end = NULL, 148 .packet_fwd = pkt_burst_mac_swap, 149 }; 150