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(uint8_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 const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT; 127 const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT; 128 129 uint16_t q; 130 int retval; 131 132 printf("Port %u init ... ", (unsigned)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 for (q = 0; q < rx_rings; q++) { 142 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size, 143 rte_eth_dev_socket_id(port_num), 144 NULL, pktmbuf_pool); 145 if (retval < 0) return retval; 146 } 147 148 for ( q = 0; q < tx_rings; q ++ ) { 149 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size, 150 rte_eth_dev_socket_id(port_num), 151 NULL); 152 if (retval < 0) return retval; 153 } 154 155 rte_eth_promiscuous_enable(port_num); 156 157 retval = rte_eth_dev_start(port_num); 158 if (retval < 0) return retval; 159 160 printf( "done: \n"); 161 162 return 0; 163 } 164 165 /** 166 * Set up the DPDK rings which will be used to pass packets, via 167 * pointers, between the multi-process server and client processes. 168 * Each client needs one RX queue. 169 */ 170 static int 171 init_shm_rings(void) 172 { 173 unsigned i; 174 unsigned socket_id; 175 const char * q_name; 176 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE; 177 178 clients = rte_malloc("client details", 179 sizeof(*clients) * num_clients, 0); 180 if (clients == NULL) 181 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n"); 182 183 for (i = 0; i < num_clients; i++) { 184 /* Create an RX queue for each client */ 185 socket_id = rte_socket_id(); 186 q_name = get_rx_queue_name(i); 187 clients[i].rx_q = rte_ring_create(q_name, 188 ringsize, socket_id, 189 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */ 190 if (clients[i].rx_q == NULL) 191 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i); 192 } 193 return 0; 194 } 195 196 /* Check the link status of all ports in up to 9s, and print them finally */ 197 static void 198 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask) 199 { 200 #define CHECK_INTERVAL 100 /* 100ms */ 201 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 202 uint8_t portid, count, all_ports_up, print_flag = 0; 203 struct rte_eth_link link; 204 205 printf("\nChecking link status"); 206 fflush(stdout); 207 for (count = 0; count <= MAX_CHECK_TIME; count++) { 208 all_ports_up = 1; 209 for (portid = 0; portid < port_num; portid++) { 210 if ((port_mask & (1 << ports->id[portid])) == 0) 211 continue; 212 memset(&link, 0, sizeof(link)); 213 rte_eth_link_get_nowait(ports->id[portid], &link); 214 /* print link status if flag set */ 215 if (print_flag == 1) { 216 if (link.link_status) 217 printf("Port %d Link Up - speed %u " 218 "Mbps - %s\n", ports->id[portid], 219 (unsigned)link.link_speed, 220 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? 221 ("full-duplex") : ("half-duplex\n")); 222 else 223 printf("Port %d Link Down\n", 224 (uint8_t)ports->id[portid]); 225 continue; 226 } 227 /* clear all_ports_up flag if any link down */ 228 if (link.link_status == ETH_LINK_DOWN) { 229 all_ports_up = 0; 230 break; 231 } 232 } 233 /* after finally printing all link status, get out */ 234 if (print_flag == 1) 235 break; 236 237 if (all_ports_up == 0) { 238 printf("."); 239 fflush(stdout); 240 rte_delay_ms(CHECK_INTERVAL); 241 } 242 243 /* set the print_flag if all ports up or timeout */ 244 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 245 print_flag = 1; 246 printf("done\n"); 247 } 248 } 249 } 250 251 /** 252 * Main init function for the multi-process server app, 253 * calls subfunctions to do each stage of the initialisation. 254 */ 255 int 256 init(int argc, char *argv[]) 257 { 258 int retval; 259 const struct rte_memzone *mz; 260 uint8_t i, total_ports; 261 262 /* init EAL, parsing EAL args */ 263 retval = rte_eal_init(argc, argv); 264 if (retval < 0) 265 return -1; 266 argc -= retval; 267 argv += retval; 268 269 /* get total number of ports */ 270 total_ports = rte_eth_dev_count(); 271 272 /* set up array for port data */ 273 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports), 274 rte_socket_id(), NO_FLAGS); 275 if (mz == NULL) 276 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n"); 277 memset(mz->addr, 0, sizeof(*ports)); 278 ports = mz->addr; 279 280 /* parse additional, application arguments */ 281 retval = parse_app_args(total_ports, argc, argv); 282 if (retval != 0) 283 return -1; 284 285 /* initialise mbuf pools */ 286 retval = init_mbuf_pools(); 287 if (retval != 0) 288 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); 289 290 /* now initialise the ports we will use */ 291 for (i = 0; i < ports->num_ports; i++) { 292 retval = init_port(ports->id[i]); 293 if (retval != 0) 294 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", 295 (unsigned)i); 296 } 297 298 check_all_ports_link_status(ports->num_ports, (~0x0)); 299 300 /* initialise the client queues/rings for inter-eu comms */ 301 init_shm_rings(); 302 303 return 0; 304 } 305