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 /* The mbuf pool for packet rx */ 87 struct rte_mempool *pktmbuf_pool; 88 89 /* array of info/queues for clients */ 90 struct client *clients = NULL; 91 92 /* the port details */ 93 struct port_info *ports; 94 95 /** 96 * Initialise the mbuf pool for packet reception for the NIC, and any other 97 * buffer pools needed by the app - currently none. 98 */ 99 static int 100 init_mbuf_pools(void) 101 { 102 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \ 103 + (ports->num_ports * MBUFS_PER_PORT); 104 105 /* don't pass single-producer/single-consumer flags to mbuf create as it 106 * seems faster to use a cache instead */ 107 printf("Creating mbuf pool '%s' [%u mbufs] ...\n", 108 PKTMBUF_POOL_NAME, num_mbufs); 109 pktmbuf_pool = rte_mempool_create(PKTMBUF_POOL_NAME, num_mbufs, 110 MBUF_SIZE, MBUF_CACHE_SIZE, 111 sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init, 112 NULL, rte_pktmbuf_init, NULL, rte_socket_id(), NO_FLAGS ); 113 114 return (pktmbuf_pool == NULL); /* 0 on success */ 115 } 116 117 /** 118 * Initialise an individual port: 119 * - configure number of rx and tx rings 120 * - set up each rx ring, to pull from the main mbuf pool 121 * - set up each tx ring 122 * - start the port and report its status to stdout 123 */ 124 static int 125 init_port(uint8_t port_num) 126 { 127 /* for port configuration all features are off by default */ 128 const struct rte_eth_conf port_conf = { 129 .rxmode = { 130 .mq_mode = ETH_MQ_RX_RSS 131 } 132 }; 133 const uint16_t rx_rings = 1, tx_rings = num_clients; 134 const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT; 135 const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT; 136 137 uint16_t q; 138 int retval; 139 140 printf("Port %u init ... ", (unsigned)port_num); 141 fflush(stdout); 142 143 /* Standard DPDK port initialisation - config port, then set up 144 * rx and tx rings */ 145 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, 146 &port_conf)) != 0) 147 return retval; 148 149 for (q = 0; q < rx_rings; q++) { 150 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size, 151 rte_eth_dev_socket_id(port_num), 152 NULL, pktmbuf_pool); 153 if (retval < 0) return retval; 154 } 155 156 for ( q = 0; q < tx_rings; q ++ ) { 157 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size, 158 rte_eth_dev_socket_id(port_num), 159 NULL); 160 if (retval < 0) return retval; 161 } 162 163 rte_eth_promiscuous_enable(port_num); 164 165 retval = rte_eth_dev_start(port_num); 166 if (retval < 0) return retval; 167 168 printf( "done: \n"); 169 170 return 0; 171 } 172 173 /** 174 * Set up the DPDK rings which will be used to pass packets, via 175 * pointers, between the multi-process server and client processes. 176 * Each client needs one RX queue. 177 */ 178 static int 179 init_shm_rings(void) 180 { 181 unsigned i; 182 unsigned socket_id; 183 const char * q_name; 184 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE; 185 186 clients = rte_malloc("client details", 187 sizeof(*clients) * num_clients, 0); 188 if (clients == NULL) 189 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n"); 190 191 for (i = 0; i < num_clients; i++) { 192 /* Create an RX queue for each client */ 193 socket_id = rte_socket_id(); 194 q_name = get_rx_queue_name(i); 195 clients[i].rx_q = rte_ring_create(q_name, 196 ringsize, socket_id, 197 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */ 198 if (clients[i].rx_q == NULL) 199 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i); 200 } 201 return 0; 202 } 203 204 /* Check the link status of all ports in up to 9s, and print them finally */ 205 static void 206 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask) 207 { 208 #define CHECK_INTERVAL 100 /* 100ms */ 209 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 210 uint8_t portid, count, all_ports_up, print_flag = 0; 211 struct rte_eth_link link; 212 213 printf("\nChecking link status"); 214 fflush(stdout); 215 for (count = 0; count <= MAX_CHECK_TIME; count++) { 216 all_ports_up = 1; 217 for (portid = 0; portid < port_num; portid++) { 218 if ((port_mask & (1 << ports->id[portid])) == 0) 219 continue; 220 memset(&link, 0, sizeof(link)); 221 rte_eth_link_get_nowait(ports->id[portid], &link); 222 /* print link status if flag set */ 223 if (print_flag == 1) { 224 if (link.link_status) 225 printf("Port %d Link Up - speed %u " 226 "Mbps - %s\n", ports->id[portid], 227 (unsigned)link.link_speed, 228 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? 229 ("full-duplex") : ("half-duplex\n")); 230 else 231 printf("Port %d Link Down\n", 232 (uint8_t)ports->id[portid]); 233 continue; 234 } 235 /* clear all_ports_up flag if any link down */ 236 if (link.link_status == 0) { 237 all_ports_up = 0; 238 break; 239 } 240 } 241 /* after finally printing all link status, get out */ 242 if (print_flag == 1) 243 break; 244 245 if (all_ports_up == 0) { 246 printf("."); 247 fflush(stdout); 248 rte_delay_ms(CHECK_INTERVAL); 249 } 250 251 /* set the print_flag if all ports up or timeout */ 252 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 253 print_flag = 1; 254 printf("done\n"); 255 } 256 } 257 } 258 259 /** 260 * Main init function for the multi-process server app, 261 * calls subfunctions to do each stage of the initialisation. 262 */ 263 int 264 init(int argc, char *argv[]) 265 { 266 int retval; 267 const struct rte_memzone *mz; 268 uint8_t i, total_ports; 269 270 /* init EAL, parsing EAL args */ 271 retval = rte_eal_init(argc, argv); 272 if (retval < 0) 273 return -1; 274 argc -= retval; 275 argv += retval; 276 277 /* get total number of ports */ 278 total_ports = rte_eth_dev_count(); 279 280 /* set up array for port data */ 281 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports), 282 rte_socket_id(), NO_FLAGS); 283 if (mz == NULL) 284 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n"); 285 memset(mz->addr, 0, sizeof(*ports)); 286 ports = mz->addr; 287 288 /* parse additional, application arguments */ 289 retval = parse_app_args(total_ports, argc, argv); 290 if (retval != 0) 291 return -1; 292 293 /* initialise mbuf pools */ 294 retval = init_mbuf_pools(); 295 if (retval != 0) 296 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); 297 298 /* now initialise the ports we will use */ 299 for (i = 0; i < ports->num_ports; i++) { 300 retval = init_port(ports->id[i]); 301 if (retval != 0) 302 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", 303 (unsigned)i); 304 } 305 306 check_all_ports_link_status(ports->num_ports, (~0x0)); 307 308 /* initialise the client queues/rings for inter-eu comms */ 309 init_shm_rings(); 310 311 return 0; 312 } 313