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 <stdio.h> 36 #include <string.h> 37 #include <sys/queue.h> 38 #include <errno.h> 39 #include <stdarg.h> 40 #include <inttypes.h> 41 42 #include <rte_common.h> 43 #include <rte_memory.h> 44 #include <rte_memzone.h> 45 #include <rte_tailq.h> 46 #include <rte_eal.h> 47 #include <rte_byteorder.h> 48 #include <rte_atomic.h> 49 #include <rte_launch.h> 50 #include <rte_per_lcore.h> 51 #include <rte_lcore.h> 52 #include <rte_branch_prediction.h> 53 #include <rte_debug.h> 54 #include <rte_ring.h> 55 #include <rte_log.h> 56 #include <rte_mempool.h> 57 #include <rte_memcpy.h> 58 #include <rte_mbuf.h> 59 #include <rte_interrupts.h> 60 #include <rte_pci.h> 61 #include <rte_ether.h> 62 #include <rte_ethdev.h> 63 #include <rte_malloc.h> 64 #include <rte_fbk_hash.h> 65 #include <rte_string_fns.h> 66 #include <rte_cycles.h> 67 68 #include "common.h" 69 #include "args.h" 70 #include "init.h" 71 72 #define MBUFS_PER_CLIENT 1536 73 #define MBUFS_PER_PORT 1536 74 #define MBUF_CACHE_SIZE 512 75 #define MBUF_OVERHEAD (sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM) 76 #define RX_MBUF_DATA_SIZE 2048 77 #define MBUF_SIZE (RX_MBUF_DATA_SIZE + MBUF_OVERHEAD) 78 79 #define RTE_MP_RX_DESC_DEFAULT 512 80 #define RTE_MP_TX_DESC_DEFAULT 512 81 #define CLIENT_QUEUE_RINGSIZE 128 82 83 #define NO_FLAGS 0 84 85 /* The mbuf pool for packet rx */ 86 struct rte_mempool *pktmbuf_pool; 87 88 /* array of info/queues for clients */ 89 struct client *clients = NULL; 90 91 /* the port details */ 92 struct port_info *ports; 93 94 /** 95 * Initialise the mbuf pool for packet reception for the NIC, and any other 96 * buffer pools needed by the app - currently none. 97 */ 98 static int 99 init_mbuf_pools(void) 100 { 101 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \ 102 + (ports->num_ports * MBUFS_PER_PORT); 103 104 /* don't pass single-producer/single-consumer flags to mbuf create as it 105 * seems faster to use a cache instead */ 106 printf("Creating mbuf pool '%s' [%u mbufs] ...\n", 107 PKTMBUF_POOL_NAME, num_mbufs); 108 pktmbuf_pool = rte_mempool_create(PKTMBUF_POOL_NAME, num_mbufs, 109 MBUF_SIZE, MBUF_CACHE_SIZE, 110 sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init, 111 NULL, rte_pktmbuf_init, NULL, rte_socket_id(), NO_FLAGS ); 112 113 return (pktmbuf_pool == NULL); /* 0 on success */ 114 } 115 116 /** 117 * Initialise an individual port: 118 * - configure number of rx and tx rings 119 * - set up each rx ring, to pull from the main mbuf pool 120 * - set up each tx ring 121 * - start the port and report its status to stdout 122 */ 123 static int 124 init_port(uint8_t port_num) 125 { 126 /* for port configuration all features are off by default */ 127 const struct rte_eth_conf port_conf = { 128 .rxmode = { 129 .mq_mode = ETH_MQ_RX_RSS 130 } 131 }; 132 const uint16_t rx_rings = 1, tx_rings = num_clients; 133 const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT; 134 const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT; 135 136 uint16_t q; 137 int retval; 138 139 printf("Port %u init ... ", (unsigned)port_num); 140 fflush(stdout); 141 142 /* Standard DPDK port initialisation - config port, then set up 143 * rx and tx rings */ 144 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, 145 &port_conf)) != 0) 146 return retval; 147 148 for (q = 0; q < rx_rings; q++) { 149 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size, 150 rte_eth_dev_socket_id(port_num), 151 NULL, pktmbuf_pool); 152 if (retval < 0) return retval; 153 } 154 155 for ( q = 0; q < tx_rings; q ++ ) { 156 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size, 157 rte_eth_dev_socket_id(port_num), 158 NULL); 159 if (retval < 0) return retval; 160 } 161 162 rte_eth_promiscuous_enable(port_num); 163 164 retval = rte_eth_dev_start(port_num); 165 if (retval < 0) return retval; 166 167 printf( "done: \n"); 168 169 return 0; 170 } 171 172 /** 173 * Set up the DPDK rings which will be used to pass packets, via 174 * pointers, between the multi-process server and client processes. 175 * Each client needs one RX queue. 176 */ 177 static int 178 init_shm_rings(void) 179 { 180 unsigned i; 181 unsigned socket_id; 182 const char * q_name; 183 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE; 184 185 clients = rte_malloc("client details", 186 sizeof(*clients) * num_clients, 0); 187 if (clients == NULL) 188 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n"); 189 190 for (i = 0; i < num_clients; i++) { 191 /* Create an RX queue for each client */ 192 socket_id = rte_socket_id(); 193 q_name = get_rx_queue_name(i); 194 clients[i].rx_q = rte_ring_create(q_name, 195 ringsize, socket_id, 196 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */ 197 if (clients[i].rx_q == NULL) 198 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i); 199 } 200 return 0; 201 } 202 203 /* Check the link status of all ports in up to 9s, and print them finally */ 204 static void 205 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask) 206 { 207 #define CHECK_INTERVAL 100 /* 100ms */ 208 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 209 uint8_t portid, count, all_ports_up, print_flag = 0; 210 struct rte_eth_link link; 211 212 printf("\nChecking link status"); 213 fflush(stdout); 214 for (count = 0; count <= MAX_CHECK_TIME; count++) { 215 all_ports_up = 1; 216 for (portid = 0; portid < port_num; portid++) { 217 if ((port_mask & (1 << ports->id[portid])) == 0) 218 continue; 219 memset(&link, 0, sizeof(link)); 220 rte_eth_link_get_nowait(ports->id[portid], &link); 221 /* print link status if flag set */ 222 if (print_flag == 1) { 223 if (link.link_status) 224 printf("Port %d Link Up - speed %u " 225 "Mbps - %s\n", ports->id[portid], 226 (unsigned)link.link_speed, 227 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? 228 ("full-duplex") : ("half-duplex\n")); 229 else 230 printf("Port %d Link Down\n", 231 (uint8_t)ports->id[portid]); 232 continue; 233 } 234 /* clear all_ports_up flag if any link down */ 235 if (link.link_status == 0) { 236 all_ports_up = 0; 237 break; 238 } 239 } 240 /* after finally printing all link status, get out */ 241 if (print_flag == 1) 242 break; 243 244 if (all_ports_up == 0) { 245 printf("."); 246 fflush(stdout); 247 rte_delay_ms(CHECK_INTERVAL); 248 } 249 250 /* set the print_flag if all ports up or timeout */ 251 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 252 print_flag = 1; 253 printf("done\n"); 254 } 255 } 256 } 257 258 /** 259 * Main init function for the multi-process server app, 260 * calls subfunctions to do each stage of the initialisation. 261 */ 262 int 263 init(int argc, char *argv[]) 264 { 265 int retval; 266 const struct rte_memzone *mz; 267 uint8_t i, total_ports; 268 269 /* init EAL, parsing EAL args */ 270 retval = rte_eal_init(argc, argv); 271 if (retval < 0) 272 return -1; 273 argc -= retval; 274 argv += retval; 275 276 /* get total number of ports */ 277 total_ports = rte_eth_dev_count(); 278 279 /* set up array for port data */ 280 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports), 281 rte_socket_id(), NO_FLAGS); 282 if (mz == NULL) 283 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n"); 284 memset(mz->addr, 0, sizeof(*ports)); 285 ports = mz->addr; 286 287 /* parse additional, application arguments */ 288 retval = parse_app_args(total_ports, argc, argv); 289 if (retval != 0) 290 return -1; 291 292 /* initialise mbuf pools */ 293 retval = init_mbuf_pools(); 294 if (retval != 0) 295 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); 296 297 /* now initialise the ports we will use */ 298 for (i = 0; i < ports->num_ports; i++) { 299 retval = init_port(ports->id[i]); 300 if (retval != 0) 301 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", 302 (unsigned)i); 303 } 304 305 check_all_ports_link_status(ports->num_ports, (~0x0)); 306 307 /* initialise the client queues/rings for inter-eu comms */ 308 init_shm_rings(); 309 310 return 0; 311 } 312