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37 #include <rte_ethdev.h>
38 #include <rte_cycles.h>
39 #include <rte_lcore.h>
42 #define RX_RING_SIZE 128
43 #define TX_RING_SIZE 512
45 #define NUM_MBUFS 8191
46 #define MBUF_SIZE (1600 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
47 #define MBUF_CACHE_SIZE 250
50 static const struct rte_eth_conf port_conf_default = {
51 .rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN, },
55 * Initialises a given port using global settings and with the rx buffers
56 * coming from the mbuf_pool passed as parameter
59 port_init(uint8_t port, struct rte_mempool *mbuf_pool)
61 struct rte_eth_conf port_conf = port_conf_default;
62 const uint16_t rx_rings = 1, tx_rings = 1;
66 if (port >= rte_eth_dev_count())
69 retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
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);
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);
87 retval = rte_eth_dev_start(port);
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",
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]);
100 rte_eth_promiscuous_enable(port);
106 * Main thread that does the work, reading from INPUT_PORT
107 * and writing to OUTPUT_PORT
109 static __attribute__((noreturn)) void
112 const uint8_t nb_ports = rte_eth_dev_count();
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);
122 printf("\nCore %u forwarding packets. [Ctrl+C to quit]\n",
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,
129 if (unlikely(nb_rx == 0))
131 const uint16_t nb_tx = rte_eth_tx_burst(port ^ 1, 0,
133 if (unlikely(nb_tx < nb_rx)) {
135 for (buf = nb_tx; buf < nb_rx; buf++)
136 rte_pktmbuf_free(bufs[buf]);
142 /* Main function, does initialisation and calls the per-lcore functions */
144 main(int argc, char *argv[])
146 struct rte_mempool *mbuf_pool;
151 int ret = rte_eal_init(argc, argv);
153 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
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");
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,
167 if (mbuf_pool == NULL)
168 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
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",
176 if (rte_lcore_count() > 1)
177 printf("\nWARNING: Too much enabled lcores - App uses only 1 lcore\n");
179 /* call lcore_main on master core only */