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 <stdint.h> 35 #include <inttypes.h> 36 #include <rte_eal.h> 37 #include <rte_ethdev.h> 38 #include <rte_cycles.h> 39 #include <rte_lcore.h> 40 #include <rte_mbuf.h> 41 42 #define RX_RING_SIZE 128 43 #define TX_RING_SIZE 512 44 45 #define NUM_MBUFS 8191 46 #define MBUF_SIZE (1600 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM) 47 #define MBUF_CACHE_SIZE 250 48 #define BURST_SIZE 32 49 50 static const struct rte_eth_conf port_conf_default = { 51 .rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN, }, 52 }; 53 54 /* 55 * Initialises a given port using global settings and with the rx buffers 56 * coming from the mbuf_pool passed as parameter 57 */ 58 static inline int 59 port_init(uint8_t port, struct rte_mempool *mbuf_pool) 60 { 61 struct rte_eth_conf port_conf = port_conf_default; 62 const uint16_t rx_rings = 1, tx_rings = 1; 63 int retval; 64 uint16_t q; 65 66 if (port >= rte_eth_dev_count()) 67 return -1; 68 69 retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf); 70 if (retval != 0) 71 return retval; 72 73 for (q = 0; q < rx_rings; q++) { 74 retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE, 75 rte_eth_dev_socket_id(port), NULL, mbuf_pool); 76 if (retval < 0) 77 return retval; 78 } 79 80 for (q = 0; q < tx_rings; q++) { 81 retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE, 82 rte_eth_dev_socket_id(port), NULL); 83 if (retval < 0) 84 return retval; 85 } 86 87 retval = rte_eth_dev_start(port); 88 if (retval < 0) 89 return retval; 90 91 struct ether_addr addr; 92 rte_eth_macaddr_get(port, &addr); 93 printf("Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8 94 " %02"PRIx8" %02"PRIx8" %02"PRIx8"\n", 95 (unsigned)port, 96 addr.addr_bytes[0], addr.addr_bytes[1], 97 addr.addr_bytes[2], addr.addr_bytes[3], 98 addr.addr_bytes[4], addr.addr_bytes[5]); 99 100 rte_eth_promiscuous_enable(port); 101 102 return 0; 103 } 104 105 /* 106 * Main thread that does the work, reading from INPUT_PORT 107 * and writing to OUTPUT_PORT 108 */ 109 static __attribute__((noreturn)) void 110 lcore_main(void) 111 { 112 const uint8_t nb_ports = rte_eth_dev_count(); 113 uint8_t port; 114 for (port = 0; port < nb_ports; port++) 115 if (rte_eth_dev_socket_id(port) > 0 && 116 rte_eth_dev_socket_id(port) != 117 (int)rte_socket_id()) 118 printf("WARNING, port %u is on remote NUMA node to " 119 "polling thread.\n\tPerformance will " 120 "not be optimal.\n", port); 121 122 printf("\nCore %u forwarding packets. [Ctrl+C to quit]\n", 123 rte_lcore_id()); 124 for (;;) { 125 for (port = 0; port < nb_ports; port++) { 126 struct rte_mbuf *bufs[BURST_SIZE]; 127 const uint16_t nb_rx = rte_eth_rx_burst(port, 0, 128 bufs, BURST_SIZE); 129 if (unlikely(nb_rx == 0)) 130 continue; 131 const uint16_t nb_tx = rte_eth_tx_burst(port ^ 1, 0, 132 bufs, nb_rx); 133 if (unlikely(nb_tx < nb_rx)) { 134 uint16_t buf; 135 for (buf = nb_tx; buf < nb_rx; buf++) 136 rte_pktmbuf_free(bufs[buf]); 137 } 138 } 139 } 140 } 141 142 /* Main function, does initialisation and calls the per-lcore functions */ 143 int 144 main(int argc, char *argv[]) 145 { 146 struct rte_mempool *mbuf_pool; 147 unsigned nb_ports; 148 uint8_t portid; 149 150 /* init EAL */ 151 int ret = rte_eal_init(argc, argv); 152 if (ret < 0) 153 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n"); 154 argc -= ret; 155 argv += ret; 156 157 nb_ports = rte_eth_dev_count(); 158 if (nb_ports < 2 || (nb_ports & 1)) 159 rte_exit(EXIT_FAILURE, "Error: number of ports must be even\n"); 160 161 mbuf_pool = rte_mempool_create("MBUF_POOL", NUM_MBUFS * nb_ports, 162 MBUF_SIZE, MBUF_CACHE_SIZE, 163 sizeof(struct rte_pktmbuf_pool_private), 164 rte_pktmbuf_pool_init, NULL, 165 rte_pktmbuf_init, NULL, 166 rte_socket_id(), 0); 167 if (mbuf_pool == NULL) 168 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); 169 170 /* initialize all ports */ 171 for (portid = 0; portid < nb_ports; portid++) 172 if (port_init(portid, mbuf_pool) != 0) 173 rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu8"\n", 174 portid); 175 176 if (rte_lcore_count() > 1) 177 printf("\nWARNING: Too much enabled lcores - App uses only 1 lcore\n"); 178 179 /* call lcore_main on master core only */ 180 lcore_main(); 181 return 0; 182 } 183