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 #ifdef RTE_ARCH_X86 70 #include "macswap_sse.h" 71 #else 72 #include "macswap.h" 73 #endif 74 75 /* 76 * MAC swap forwarding mode: Swap the source and the destination Ethernet 77 * addresses of packets before forwarding them. 78 */ 79 static void 80 pkt_burst_mac_swap(struct fwd_stream *fs) 81 { 82 struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; 83 struct rte_port *txp; 84 uint16_t nb_rx; 85 uint16_t nb_tx; 86 uint32_t retry; 87 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES 88 uint64_t start_tsc; 89 uint64_t end_tsc; 90 uint64_t core_cycles; 91 #endif 92 93 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES 94 start_tsc = rte_rdtsc(); 95 #endif 96 97 /* 98 * Receive a burst of packets and forward them. 99 */ 100 nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst, 101 nb_pkt_per_burst); 102 if (unlikely(nb_rx == 0)) 103 return; 104 105 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS 106 fs->rx_burst_stats.pkt_burst_spread[nb_rx]++; 107 #endif 108 fs->rx_packets += nb_rx; 109 txp = &ports[fs->tx_port]; 110 111 do_macswap(pkts_burst, nb_rx, txp); 112 113 nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx); 114 /* 115 * Retry if necessary 116 */ 117 if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) { 118 retry = 0; 119 while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) { 120 rte_delay_us(burst_tx_delay_time); 121 nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue, 122 &pkts_burst[nb_tx], nb_rx - nb_tx); 123 } 124 } 125 fs->tx_packets += nb_tx; 126 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS 127 fs->tx_burst_stats.pkt_burst_spread[nb_tx]++; 128 #endif 129 if (unlikely(nb_tx < nb_rx)) { 130 fs->fwd_dropped += (nb_rx - nb_tx); 131 do { 132 rte_pktmbuf_free(pkts_burst[nb_tx]); 133 } while (++nb_tx < nb_rx); 134 } 135 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES 136 end_tsc = rte_rdtsc(); 137 core_cycles = (end_tsc - start_tsc); 138 fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles); 139 #endif 140 } 141 142 struct fwd_engine mac_swap_engine = { 143 .fwd_mode_name = "macswap", 144 .port_fwd_begin = NULL, 145 .port_fwd_end = NULL, 146 .packet_fwd = pkt_burst_mac_swap, 147 }; 148