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37 #include <rte_ethdev.h>
38 #include <rte_cycles.h>
39 #include <rte_lcore.h>
43 #define RX_RING_SIZE 128
44 #define TX_RING_SIZE 512
46 #define NUM_MBUFS 8191
47 #define MBUF_SIZE (1600 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
48 #define MBUF_CACHE_SIZE 250
51 static const struct rte_eth_conf port_conf_default = {
52 .rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN, },
56 * Initialises a given port using global settings and with the rx buffers
57 * coming from the mbuf_pool passed as parameter
60 port_init(uint8_t port, struct rte_mempool *mbuf_pool)
62 struct rte_eth_conf port_conf = port_conf_default;
63 const uint16_t rx_rings = 1, tx_rings = 1;
67 if (port >= rte_eth_dev_count())
70 retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
74 for (q = 0; q < rx_rings; q++) {
75 retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE,
76 rte_eth_dev_socket_id(port), NULL, mbuf_pool);
81 for (q = 0; q < tx_rings; q++) {
82 retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE,
83 rte_eth_dev_socket_id(port), NULL);
88 retval = rte_eth_dev_start(port);
92 struct ether_addr addr;
93 rte_eth_macaddr_get(port, &addr);
94 printf("Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
95 " %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
97 addr.addr_bytes[0], addr.addr_bytes[1],
98 addr.addr_bytes[2], addr.addr_bytes[3],
99 addr.addr_bytes[4], addr.addr_bytes[5]);
101 rte_eth_promiscuous_enable(port);
107 * Main thread that does the work, reading from INPUT_PORT
108 * and writing to OUTPUT_PORT
110 static __attribute__((noreturn)) void
113 const uint8_t nb_ports = rte_eth_dev_count();
115 for (port = 0; port < nb_ports; port++)
116 if (rte_eth_dev_socket_id(port) > 0 &&
117 rte_eth_dev_socket_id(port) !=
118 (int)rte_socket_id())
119 printf("WARNING, port %u is on remote NUMA node to "
120 "polling thread.\n\tPerformance will "
121 "not be optimal.\n", port);
123 printf("\nCore %u forwarding packets. [Ctrl+C to quit]\n",
126 for (port = 0; port < nb_ports; port++) {
127 struct rte_mbuf *bufs[BURST_SIZE];
128 const uint16_t nb_rx = rte_eth_rx_burst(port, 0,
130 if (unlikely(nb_rx == 0))
132 const uint16_t nb_tx = rte_eth_tx_burst(port ^ 1, 0,
134 if (unlikely(nb_tx < nb_rx)) {
136 for (buf = nb_tx; buf < nb_rx; buf++)
137 rte_pktmbuf_free(bufs[buf]);
143 /* Main function, does initialisation and calls the per-lcore functions */
145 MAIN(int argc, char *argv[])
147 struct rte_mempool *mbuf_pool;
152 int ret = rte_eal_init(argc, argv);
154 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
158 nb_ports = rte_eth_dev_count();
159 if (nb_ports < 2 || (nb_ports & 1))
160 rte_exit(EXIT_FAILURE, "Error: number of ports must be even\n");
162 mbuf_pool = rte_mempool_create("MBUF_POOL", NUM_MBUFS * nb_ports,
163 MBUF_SIZE, MBUF_CACHE_SIZE,
164 sizeof(struct rte_pktmbuf_pool_private),
165 rte_pktmbuf_pool_init, NULL,
166 rte_pktmbuf_init, NULL,
168 if (mbuf_pool == NULL)
169 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
171 /* initialize all ports */
172 for (portid = 0; portid < nb_ports; portid++)
173 if (port_init(portid, mbuf_pool) != 0)
174 rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu8"\n",
177 if (rte_lcore_count() > 1)
178 printf("\nWARNING: Too much enabled lcores - App uses only 1 lcore\n");
180 /* call lcore_main on master core only */