1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2010-2012 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 * version: DPDK.L.1.2.3-3 34 */ 35 36 #include <stdint.h> 37 #include <stdio.h> 38 #include <string.h> 39 #include <sys/queue.h> 40 #include <errno.h> 41 #include <stdarg.h> 42 #include <inttypes.h> 43 44 #include <rte_common.h> 45 #include <rte_memory.h> 46 #include <rte_memzone.h> 47 #include <rte_tailq.h> 48 #include <rte_eal.h> 49 #include <rte_byteorder.h> 50 #include <rte_atomic.h> 51 #include <rte_launch.h> 52 #include <rte_per_lcore.h> 53 #include <rte_lcore.h> 54 #include <rte_branch_prediction.h> 55 #include <rte_debug.h> 56 #include <rte_ring.h> 57 #include <rte_log.h> 58 #include <rte_mempool.h> 59 #include <rte_memcpy.h> 60 #include <rte_mbuf.h> 61 #include <rte_interrupts.h> 62 #include <rte_pci.h> 63 #include <rte_ether.h> 64 #include <rte_ethdev.h> 65 #include <rte_malloc.h> 66 #include <rte_hash_crc.h> 67 #include <rte_fbk_hash.h> 68 #include <rte_string_fns.h> 69 70 #include "common.h" 71 #include "init_drivers.h" 72 #include "args.h" 73 #include "init.h" 74 #include "main.h" 75 76 #define MBUFS_PER_CLIENT 1536 77 #define MBUFS_PER_PORT 1536 78 #define MBUF_CACHE_SIZE 512 79 #define MBUF_OVERHEAD (sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM) 80 #define RX_MBUF_DATA_SIZE 2048 81 #define MBUF_SIZE (RX_MBUF_DATA_SIZE + MBUF_OVERHEAD) 82 83 #define RTE_MP_RX_DESC_DEFAULT 512 84 #define RTE_MP_TX_DESC_DEFAULT 512 85 #define CLIENT_QUEUE_RINGSIZE 128 86 87 #define NO_FLAGS 0 88 89 /* 90 * RX and TX Prefetch, Host, and Write-back threshold values should be 91 * carefully set for optimal performance. Consult the network 92 * controller's datasheet and supporting DPDK documentation for guidance 93 * on how these parameters should be set. 94 */ 95 /* Default configuration for rx and tx thresholds etc. */ 96 /* 97 * These default values are optimized for use with the Intel(R) 82599 10 GbE 98 * Controller and the DPDK ixgbe PMD. Consider using other values for other 99 * network controllers and/or network drivers. 100 */ 101 #define MP_DEFAULT_PTHRESH 36 102 #define MP_DEFAULT_RX_HTHRESH 8 103 #define MP_DEFAULT_TX_HTHRESH 0 104 #define MP_DEFAULT_WTHRESH 0 105 106 static const struct rte_eth_rxconf rx_conf_default = { 107 .rx_thresh = { 108 .pthresh = MP_DEFAULT_PTHRESH, 109 .hthresh = MP_DEFAULT_RX_HTHRESH, 110 .wthresh = MP_DEFAULT_WTHRESH, 111 }, 112 }; 113 114 static const struct rte_eth_txconf tx_conf_default = { 115 .tx_thresh = { 116 .pthresh = MP_DEFAULT_PTHRESH, 117 .hthresh = MP_DEFAULT_TX_HTHRESH, 118 .wthresh = MP_DEFAULT_WTHRESH, 119 }, 120 .tx_free_thresh = 0, /* Use PMD default values */ 121 .tx_rs_thresh = 0, /* Use PMD default values */ 122 }; 123 124 /* The mbuf pool for packet rx */ 125 struct rte_mempool *pktmbuf_pool; 126 127 /* array of info/queues for clients */ 128 struct client *clients = NULL; 129 130 /* the port details */ 131 struct port_info *ports; 132 133 /** 134 * Initialise the mbuf pool for packet reception for the NIC, and any other 135 * buffer pools needed by the app - currently none. 136 */ 137 static int 138 init_mbuf_pools(void) 139 { 140 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \ 141 + (ports->num_ports * MBUFS_PER_PORT); 142 143 /* don't pass single-producer/single-consumer flags to mbuf create as it 144 * seems faster to use a cache instead */ 145 printf("Creating mbuf pool '%s' [%u mbufs] ...\n", 146 PKTMBUF_POOL_NAME, num_mbufs); 147 pktmbuf_pool = rte_mempool_create(PKTMBUF_POOL_NAME, num_mbufs, 148 MBUF_SIZE, MBUF_CACHE_SIZE, 149 sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init, 150 NULL, rte_pktmbuf_init, NULL, SOCKET0, NO_FLAGS ); 151 152 return (pktmbuf_pool == NULL); /* 0 on success */ 153 } 154 155 /** 156 * Initialise an individual port: 157 * - configure number of rx and tx rings 158 * - set up each rx ring, to pull from the main mbuf pool 159 * - set up each tx ring 160 * - start the port and report its status to stdout 161 */ 162 static int 163 init_port(uint8_t port_num) 164 { 165 /* for port configuration all features are off by default */ 166 const struct rte_eth_conf port_conf = { 167 .rxmode = { 168 .mq_mode = ETH_RSS 169 } 170 }; 171 const uint16_t rx_rings = 1, tx_rings = num_clients; 172 const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT; 173 const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT; 174 175 struct rte_eth_link link; 176 uint16_t q; 177 int retval; 178 179 printf("Port %u init ... ", (unsigned)port_num); 180 fflush(stdout); 181 182 /* Standard DPDK port initialisation - config port, then set up 183 * rx and tx rings */ 184 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, 185 &port_conf)) != 0) 186 return retval; 187 188 for (q = 0; q < rx_rings; q++) { 189 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size, 190 SOCKET0, &rx_conf_default, pktmbuf_pool); 191 if (retval < 0) return retval; 192 } 193 194 for ( q = 0; q < tx_rings; q ++ ) { 195 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size, 196 SOCKET0, &tx_conf_default); 197 if (retval < 0) return retval; 198 } 199 200 rte_eth_promiscuous_enable(port_num); 201 202 retval = rte_eth_dev_start(port_num); 203 if (retval < 0) return retval; 204 205 printf( "done: "); 206 207 /* get link status */ 208 rte_eth_link_get(port_num, &link); 209 if (link.link_status) { 210 printf(" Link Up - speed %u Mbps - %s\n", 211 (uint32_t) link.link_speed, 212 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? 213 ("full-duplex") : ("half-duplex\n")); 214 } 215 else{ 216 printf(" Link Down\n"); 217 } 218 return 0; 219 } 220 221 /** 222 * Set up the DPDK rings which will be used to pass packets, via 223 * pointers, between the multi-process server and client processes. 224 * Each client needs one RX queue. 225 */ 226 static int 227 init_shm_rings(void) 228 { 229 unsigned i; 230 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE; 231 232 clients = rte_malloc("client details", 233 sizeof(*clients) * num_clients, 0); 234 if (clients == NULL) 235 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n"); 236 237 for (i = 0; i < num_clients; i++) { 238 /* Create an RX queue for each client */ 239 clients[i].rx_q = rte_ring_create(get_rx_queue_name(i), 240 ringsize, SOCKET0, 241 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */ 242 if (clients[i].rx_q == NULL) 243 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i); 244 } 245 return 0; 246 } 247 248 /** 249 * Main init function for the multi-process server app, 250 * calls subfunctions to do each stage of the initialisation. 251 */ 252 int 253 init(int argc, char *argv[]) 254 { 255 int retval; 256 const struct rte_memzone *mz; 257 uint8_t i, total_ports; 258 259 /* init EAL, parsing EAL args */ 260 retval = rte_eal_init(argc, argv); 261 if (retval < 0) 262 return -1; 263 argc -= retval; 264 argv += retval; 265 266 /* initialise the nic drivers */ 267 retval = init_drivers(); 268 if (retval != 0) 269 rte_exit(EXIT_FAILURE, "Cannot initialise drivers\n"); 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 /* initialise the client queues/rings for inter-eu comms */ 301 init_shm_rings(); 302 303 return 0; 304 } 305