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_fbk_hash.h> 64 #include <rte_string_fns.h> 65 #include <rte_cycles.h> 66 67 #include "common.h" 68 #include "args.h" 69 #include "init.h" 70 71 #define MBUFS_PER_CLIENT 1536 72 #define MBUFS_PER_PORT 1536 73 #define MBUF_CACHE_SIZE 512 74 #define MBUF_DATA_SIZE (2048 + RTE_PKTMBUF_HEADROOM) 75 76 #define RTE_MP_RX_DESC_DEFAULT 512 77 #define RTE_MP_TX_DESC_DEFAULT 512 78 #define CLIENT_QUEUE_RINGSIZE 128 79 80 #define NO_FLAGS 0 81 82 /* The mbuf pool for packet rx */ 83 struct rte_mempool *pktmbuf_pool; 84 85 /* array of info/queues for clients */ 86 struct client *clients = NULL; 87 88 /* the port details */ 89 struct port_info *ports; 90 91 /** 92 * Initialise the mbuf pool for packet reception for the NIC, and any other 93 * buffer pools needed by the app - currently none. 94 */ 95 static int 96 init_mbuf_pools(void) 97 { 98 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \ 99 + (ports->num_ports * MBUFS_PER_PORT); 100 101 /* don't pass single-producer/single-consumer flags to mbuf create as it 102 * seems faster to use a cache instead */ 103 printf("Creating mbuf pool '%s' [%u mbufs] ...\n", 104 PKTMBUF_POOL_NAME, num_mbufs); 105 pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs, 106 MBUF_CACHE_SIZE, 0, MBUF_DATA_SIZE, rte_socket_id()); 107 108 return (pktmbuf_pool == NULL); /* 0 on success */ 109 } 110 111 /** 112 * Initialise an individual port: 113 * - configure number of rx and tx rings 114 * - set up each rx ring, to pull from the main mbuf pool 115 * - set up each tx ring 116 * - start the port and report its status to stdout 117 */ 118 static int 119 init_port(uint8_t port_num) 120 { 121 /* for port configuration all features are off by default */ 122 const struct rte_eth_conf port_conf = { 123 .rxmode = { 124 .mq_mode = ETH_MQ_RX_RSS 125 } 126 }; 127 const uint16_t rx_rings = 1, tx_rings = num_clients; 128 const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT; 129 const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT; 130 131 uint16_t q; 132 int retval; 133 134 printf("Port %u init ... ", (unsigned)port_num); 135 fflush(stdout); 136 137 /* Standard DPDK port initialisation - config port, then set up 138 * rx and tx rings */ 139 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, 140 &port_conf)) != 0) 141 return retval; 142 143 for (q = 0; q < rx_rings; q++) { 144 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size, 145 rte_eth_dev_socket_id(port_num), 146 NULL, pktmbuf_pool); 147 if (retval < 0) return retval; 148 } 149 150 for ( q = 0; q < tx_rings; q ++ ) { 151 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size, 152 rte_eth_dev_socket_id(port_num), 153 NULL); 154 if (retval < 0) return retval; 155 } 156 157 rte_eth_promiscuous_enable(port_num); 158 159 retval = rte_eth_dev_start(port_num); 160 if (retval < 0) return retval; 161 162 printf( "done: \n"); 163 164 return 0; 165 } 166 167 /** 168 * Set up the DPDK rings which will be used to pass packets, via 169 * pointers, between the multi-process server and client processes. 170 * Each client needs one RX queue. 171 */ 172 static int 173 init_shm_rings(void) 174 { 175 unsigned i; 176 unsigned socket_id; 177 const char * q_name; 178 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE; 179 180 clients = rte_malloc("client details", 181 sizeof(*clients) * num_clients, 0); 182 if (clients == NULL) 183 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n"); 184 185 for (i = 0; i < num_clients; i++) { 186 /* Create an RX queue for each client */ 187 socket_id = rte_socket_id(); 188 q_name = get_rx_queue_name(i); 189 clients[i].rx_q = rte_ring_create(q_name, 190 ringsize, socket_id, 191 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */ 192 if (clients[i].rx_q == NULL) 193 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i); 194 } 195 return 0; 196 } 197 198 /* Check the link status of all ports in up to 9s, and print them finally */ 199 static void 200 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask) 201 { 202 #define CHECK_INTERVAL 100 /* 100ms */ 203 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 204 uint8_t portid, count, all_ports_up, print_flag = 0; 205 struct rte_eth_link link; 206 207 printf("\nChecking link status"); 208 fflush(stdout); 209 for (count = 0; count <= MAX_CHECK_TIME; count++) { 210 all_ports_up = 1; 211 for (portid = 0; portid < port_num; portid++) { 212 if ((port_mask & (1 << ports->id[portid])) == 0) 213 continue; 214 memset(&link, 0, sizeof(link)); 215 rte_eth_link_get_nowait(ports->id[portid], &link); 216 /* print link status if flag set */ 217 if (print_flag == 1) { 218 if (link.link_status) 219 printf("Port %d Link Up - speed %u " 220 "Mbps - %s\n", ports->id[portid], 221 (unsigned)link.link_speed, 222 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? 223 ("full-duplex") : ("half-duplex\n")); 224 else 225 printf("Port %d Link Down\n", 226 (uint8_t)ports->id[portid]); 227 continue; 228 } 229 /* clear all_ports_up flag if any link down */ 230 if (link.link_status == 0) { 231 all_ports_up = 0; 232 break; 233 } 234 } 235 /* after finally printing all link status, get out */ 236 if (print_flag == 1) 237 break; 238 239 if (all_ports_up == 0) { 240 printf("."); 241 fflush(stdout); 242 rte_delay_ms(CHECK_INTERVAL); 243 } 244 245 /* set the print_flag if all ports up or timeout */ 246 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 247 print_flag = 1; 248 printf("done\n"); 249 } 250 } 251 } 252 253 /** 254 * Main init function for the multi-process server app, 255 * calls subfunctions to do each stage of the initialisation. 256 */ 257 int 258 init(int argc, char *argv[]) 259 { 260 int retval; 261 const struct rte_memzone *mz; 262 uint8_t i, total_ports; 263 264 /* init EAL, parsing EAL args */ 265 retval = rte_eal_init(argc, argv); 266 if (retval < 0) 267 return -1; 268 argc -= retval; 269 argv += retval; 270 271 /* get total number of ports */ 272 total_ports = rte_eth_dev_count(); 273 274 /* set up array for port data */ 275 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports), 276 rte_socket_id(), NO_FLAGS); 277 if (mz == NULL) 278 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n"); 279 memset(mz->addr, 0, sizeof(*ports)); 280 ports = mz->addr; 281 282 /* parse additional, application arguments */ 283 retval = parse_app_args(total_ports, argc, argv); 284 if (retval != 0) 285 return -1; 286 287 /* initialise mbuf pools */ 288 retval = init_mbuf_pools(); 289 if (retval != 0) 290 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); 291 292 /* now initialise the ports we will use */ 293 for (i = 0; i < ports->num_ports; i++) { 294 retval = init_port(ports->id[i]); 295 if (retval != 0) 296 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", 297 (unsigned)i); 298 } 299 300 check_all_ports_link_status(ports->num_ports, (~0x0)); 301 302 /* initialise the client queues/rings for inter-eu comms */ 303 init_shm_rings(); 304 305 return 0; 306 } 307