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