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