1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2010-2013 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 35 #include <stdint.h> 36 #include <stdio.h> 37 #include <string.h> 38 #include <sys/queue.h> 39 #include <errno.h> 40 #include <stdarg.h> 41 #include <inttypes.h> 42 43 #include <rte_common.h> 44 #include <rte_memory.h> 45 #include <rte_memzone.h> 46 #include <rte_tailq.h> 47 #include <rte_eal.h> 48 #include <rte_byteorder.h> 49 #include <rte_atomic.h> 50 #include <rte_launch.h> 51 #include <rte_per_lcore.h> 52 #include <rte_lcore.h> 53 #include <rte_branch_prediction.h> 54 #include <rte_debug.h> 55 #include <rte_ring.h> 56 #include <rte_log.h> 57 #include <rte_mempool.h> 58 #include <rte_memcpy.h> 59 #include <rte_mbuf.h> 60 #include <rte_interrupts.h> 61 #include <rte_pci.h> 62 #include <rte_ether.h> 63 #include <rte_ethdev.h> 64 #include <rte_malloc.h> 65 #include <rte_fbk_hash.h> 66 #include <rte_string_fns.h> 67 #include <rte_cycles.h> 68 69 #include "common.h" 70 #include "init_drivers.h" 71 #include "args.h" 72 #include "init.h" 73 #include "main.h" 74 75 #define MBUFS_PER_CLIENT 1536 76 #define MBUFS_PER_PORT 1536 77 #define MBUF_CACHE_SIZE 512 78 #define MBUF_OVERHEAD (sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM) 79 #define RX_MBUF_DATA_SIZE 2048 80 #define MBUF_SIZE (RX_MBUF_DATA_SIZE + MBUF_OVERHEAD) 81 82 #define RTE_MP_RX_DESC_DEFAULT 512 83 #define RTE_MP_TX_DESC_DEFAULT 512 84 #define CLIENT_QUEUE_RINGSIZE 128 85 86 #define NO_FLAGS 0 87 88 /* 89 * RX and TX Prefetch, Host, and Write-back threshold values should be 90 * carefully set for optimal performance. Consult the network 91 * controller's datasheet and supporting DPDK documentation for guidance 92 * on how these parameters should be set. 93 */ 94 /* Default configuration for rx and tx thresholds etc. */ 95 /* 96 * These default values are optimized for use with the Intel(R) 82599 10 GbE 97 * Controller and the DPDK ixgbe PMD. Consider using other values for other 98 * network controllers and/or network drivers. 99 */ 100 #define MP_DEFAULT_PTHRESH 36 101 #define MP_DEFAULT_RX_HTHRESH 8 102 #define MP_DEFAULT_TX_HTHRESH 0 103 #define MP_DEFAULT_WTHRESH 0 104 105 static const struct rte_eth_rxconf rx_conf_default = { 106 .rx_thresh = { 107 .pthresh = MP_DEFAULT_PTHRESH, 108 .hthresh = MP_DEFAULT_RX_HTHRESH, 109 .wthresh = MP_DEFAULT_WTHRESH, 110 }, 111 }; 112 113 static const struct rte_eth_txconf tx_conf_default = { 114 .tx_thresh = { 115 .pthresh = MP_DEFAULT_PTHRESH, 116 .hthresh = MP_DEFAULT_TX_HTHRESH, 117 .wthresh = MP_DEFAULT_WTHRESH, 118 }, 119 .tx_free_thresh = 0, /* Use PMD default values */ 120 .tx_rs_thresh = 0, /* Use PMD default values */ 121 }; 122 123 /* The mbuf pool for packet rx */ 124 struct rte_mempool *pktmbuf_pool; 125 126 /* array of info/queues for clients */ 127 struct client *clients = NULL; 128 129 /* the port details */ 130 struct port_info *ports; 131 132 /** 133 * Initialise the mbuf pool for packet reception for the NIC, and any other 134 * buffer pools needed by the app - currently none. 135 */ 136 static int 137 init_mbuf_pools(void) 138 { 139 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \ 140 + (ports->num_ports * MBUFS_PER_PORT); 141 142 /* don't pass single-producer/single-consumer flags to mbuf create as it 143 * seems faster to use a cache instead */ 144 printf("Creating mbuf pool '%s' [%u mbufs] ...\n", 145 PKTMBUF_POOL_NAME, num_mbufs); 146 pktmbuf_pool = rte_mempool_create(PKTMBUF_POOL_NAME, num_mbufs, 147 MBUF_SIZE, MBUF_CACHE_SIZE, 148 sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init, 149 NULL, rte_pktmbuf_init, NULL, SOCKET0, NO_FLAGS ); 150 151 return (pktmbuf_pool == NULL); /* 0 on success */ 152 } 153 154 /** 155 * Initialise an individual port: 156 * - configure number of rx and tx rings 157 * - set up each rx ring, to pull from the main mbuf pool 158 * - set up each tx ring 159 * - start the port and report its status to stdout 160 */ 161 static int 162 init_port(uint8_t port_num) 163 { 164 /* for port configuration all features are off by default */ 165 const struct rte_eth_conf port_conf = { 166 .rxmode = { 167 .mq_mode = ETH_RSS 168 } 169 }; 170 const uint16_t rx_rings = 1, tx_rings = num_clients; 171 const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT; 172 const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT; 173 174 uint16_t q; 175 int retval; 176 177 printf("Port %u init ... ", (unsigned)port_num); 178 fflush(stdout); 179 180 /* Standard DPDK port initialisation - config port, then set up 181 * rx and tx rings */ 182 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, 183 &port_conf)) != 0) 184 return retval; 185 186 for (q = 0; q < rx_rings; q++) { 187 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size, 188 SOCKET0, &rx_conf_default, pktmbuf_pool); 189 if (retval < 0) return retval; 190 } 191 192 for ( q = 0; q < tx_rings; q ++ ) { 193 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size, 194 SOCKET0, &tx_conf_default); 195 if (retval < 0) return retval; 196 } 197 198 rte_eth_promiscuous_enable(port_num); 199 200 retval = rte_eth_dev_start(port_num); 201 if (retval < 0) return retval; 202 203 printf( "done: \n"); 204 205 return 0; 206 } 207 208 /** 209 * Set up the DPDK rings which will be used to pass packets, via 210 * pointers, between the multi-process server and client processes. 211 * Each client needs one RX queue. 212 */ 213 static int 214 init_shm_rings(void) 215 { 216 unsigned i; 217 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE; 218 219 clients = rte_malloc("client details", 220 sizeof(*clients) * num_clients, 0); 221 if (clients == NULL) 222 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n"); 223 224 for (i = 0; i < num_clients; i++) { 225 /* Create an RX queue for each client */ 226 clients[i].rx_q = rte_ring_create(get_rx_queue_name(i), 227 ringsize, SOCKET0, 228 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */ 229 if (clients[i].rx_q == NULL) 230 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i); 231 } 232 return 0; 233 } 234 235 /* Check the link status of all ports in up to 9s, and print them finally */ 236 static void 237 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask) 238 { 239 #define CHECK_INTERVAL 100 /* 100ms */ 240 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 241 uint8_t portid, count, all_ports_up, print_flag = 0; 242 struct rte_eth_link link; 243 244 printf("\nChecking link status"); 245 fflush(stdout); 246 for (count = 0; count <= MAX_CHECK_TIME; count++) { 247 all_ports_up = 1; 248 for (portid = 0; portid < port_num; portid++) { 249 if ((port_mask & (1 << portid)) == 0) 250 continue; 251 memset(&link, 0, sizeof(link)); 252 rte_eth_link_get_nowait(portid, &link); 253 /* print link status if flag set */ 254 if (print_flag == 1) { 255 if (link.link_status) 256 printf("Port %d Link Up - speed %u " 257 "Mbps - %s\n", (uint8_t)portid, 258 (unsigned)link.link_speed, 259 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? 260 ("full-duplex") : ("half-duplex\n")); 261 else 262 printf("Port %d Link Down\n", 263 (uint8_t)portid); 264 continue; 265 } 266 /* clear all_ports_up flag if any link down */ 267 if (link.link_status == 0) { 268 all_ports_up = 0; 269 break; 270 } 271 } 272 /* after finally printing all link status, get out */ 273 if (print_flag == 1) 274 break; 275 276 if (all_ports_up == 0) { 277 printf("."); 278 fflush(stdout); 279 rte_delay_ms(CHECK_INTERVAL); 280 } 281 282 /* set the print_flag if all ports up or timeout */ 283 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 284 print_flag = 1; 285 printf("done\n"); 286 } 287 } 288 } 289 290 /** 291 * Main init function for the multi-process server app, 292 * calls subfunctions to do each stage of the initialisation. 293 */ 294 int 295 init(int argc, char *argv[]) 296 { 297 int retval; 298 const struct rte_memzone *mz; 299 uint8_t i, total_ports; 300 301 /* init EAL, parsing EAL args */ 302 retval = rte_eal_init(argc, argv); 303 if (retval < 0) 304 return -1; 305 argc -= retval; 306 argv += retval; 307 308 /* initialise the nic drivers */ 309 retval = init_drivers(); 310 if (retval != 0) 311 rte_exit(EXIT_FAILURE, "Cannot initialise drivers\n"); 312 313 /* get total number of ports */ 314 total_ports = rte_eth_dev_count(); 315 316 /* set up array for port data */ 317 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports), 318 rte_socket_id(), NO_FLAGS); 319 if (mz == NULL) 320 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n"); 321 memset(mz->addr, 0, sizeof(*ports)); 322 ports = mz->addr; 323 324 /* parse additional, application arguments */ 325 retval = parse_app_args(total_ports, argc, argv); 326 if (retval != 0) 327 return -1; 328 329 /* initialise mbuf pools */ 330 retval = init_mbuf_pools(); 331 if (retval != 0) 332 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); 333 334 /* now initialise the ports we will use */ 335 for (i = 0; i < ports->num_ports; i++) { 336 retval = init_port(ports->id[i]); 337 if (retval != 0) 338 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", 339 (unsigned)i); 340 } 341 342 check_all_ports_link_status(ports->num_ports, (~0x0)); 343 344 /* initialise the client queues/rings for inter-eu comms */ 345 init_shm_rings(); 346 347 return 0; 348 } 349