1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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_memzone.h> 53 #include <rte_launch.h> 54 #include <rte_eal.h> 55 #include <rte_per_lcore.h> 56 #include <rte_lcore.h> 57 #include <rte_atomic.h> 58 #include <rte_branch_prediction.h> 59 #include <rte_memory.h> 60 #include <rte_mempool.h> 61 #include <rte_mbuf.h> 62 #include <rte_interrupts.h> 63 #include <rte_pci.h> 64 #include <rte_ether.h> 65 #include <rte_ethdev.h> 66 #include <rte_ip.h> 67 #include <rte_string_fns.h> 68 #include <rte_flow.h> 69 70 #include "testpmd.h" 71 72 /* 73 * Forwarding of packets in MAC mode. 74 * Change the source and the destination Ethernet addressed of packets 75 * before forwarding them. 76 */ 77 static void 78 pkt_burst_mac_forward(struct fwd_stream *fs) 79 { 80 struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; 81 struct rte_port *txp; 82 struct rte_mbuf *mb; 83 struct ether_hdr *eth_hdr; 84 uint32_t retry; 85 uint16_t nb_rx; 86 uint16_t nb_tx; 87 uint16_t i; 88 uint64_t ol_flags = 0; 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 if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_VLAN) 113 ol_flags = PKT_TX_VLAN_PKT; 114 if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_QINQ) 115 ol_flags |= PKT_TX_QINQ_PKT; 116 for (i = 0; i < nb_rx; i++) { 117 if (likely(i < nb_rx - 1)) 118 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1], 119 void *)); 120 mb = pkts_burst[i]; 121 eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *); 122 ether_addr_copy(&peer_eth_addrs[fs->peer_addr], 123 ð_hdr->d_addr); 124 ether_addr_copy(&ports[fs->tx_port].eth_addr, 125 ð_hdr->s_addr); 126 mb->ol_flags = ol_flags; 127 mb->l2_len = sizeof(struct ether_hdr); 128 mb->l3_len = sizeof(struct ipv4_hdr); 129 mb->vlan_tci = txp->tx_vlan_id; 130 mb->vlan_tci_outer = txp->tx_vlan_id_outer; 131 } 132 nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx); 133 /* 134 * Retry if necessary 135 */ 136 if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) { 137 retry = 0; 138 while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) { 139 rte_delay_us(burst_tx_delay_time); 140 nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue, 141 &pkts_burst[nb_tx], nb_rx - nb_tx); 142 } 143 } 144 145 fs->tx_packets += nb_tx; 146 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS 147 fs->tx_burst_stats.pkt_burst_spread[nb_tx]++; 148 #endif 149 if (unlikely(nb_tx < nb_rx)) { 150 fs->fwd_dropped += (nb_rx - nb_tx); 151 do { 152 rte_pktmbuf_free(pkts_burst[nb_tx]); 153 } while (++nb_tx < nb_rx); 154 } 155 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES 156 end_tsc = rte_rdtsc(); 157 core_cycles = (end_tsc - start_tsc); 158 fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles); 159 #endif 160 } 161 162 struct fwd_engine mac_fwd_engine = { 163 .fwd_mode_name = "mac", 164 .port_fwd_begin = NULL, 165 .port_fwd_end = NULL, 166 .packet_fwd = pkt_burst_mac_forward, 167 }; 168