1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2016-2017 Intel Corporation 3 */ 4 5 #include <stdint.h> 6 #include <stdio.h> 7 #include <string.h> 8 #include <sys/queue.h> 9 #include <errno.h> 10 #include <stdarg.h> 11 #include <inttypes.h> 12 13 #include <rte_common.h> 14 #include <rte_memory.h> 15 #include <rte_memzone.h> 16 #include <rte_eal.h> 17 #include <rte_byteorder.h> 18 #include <rte_atomic.h> 19 #include <rte_launch.h> 20 #include <rte_per_lcore.h> 21 #include <rte_lcore.h> 22 #include <rte_branch_prediction.h> 23 #include <rte_debug.h> 24 #include <rte_ring.h> 25 #include <rte_log.h> 26 #include <rte_mempool.h> 27 #include <rte_memcpy.h> 28 #include <rte_mbuf.h> 29 #include <rte_interrupts.h> 30 #include <rte_ether.h> 31 #include <rte_ethdev.h> 32 #include <rte_malloc.h> 33 #include <rte_string_fns.h> 34 #include <rte_cycles.h> 35 #include <rte_efd.h> 36 #include <rte_hash.h> 37 38 #include "common.h" 39 #include "args.h" 40 #include "init.h" 41 42 #define MBUFS_PER_NODE 1536 43 #define MBUFS_PER_PORT 1536 44 #define MBUF_CACHE_SIZE 512 45 46 #define RTE_MP_RX_DESC_DEFAULT 512 47 #define RTE_MP_TX_DESC_DEFAULT 512 48 #define NODE_QUEUE_RINGSIZE 128 49 50 #define NO_FLAGS 0 51 52 /* The mbuf pool for packet rx */ 53 struct rte_mempool *pktmbuf_pool; 54 55 /* array of info/queues for nodes */ 56 struct node *nodes; 57 58 /* EFD table */ 59 struct rte_efd_table *efd_table; 60 61 /* Shared info between server and nodes */ 62 struct shared_info *info; 63 64 /** 65 * Initialise the mbuf pool for packet reception for the NIC, and any other 66 * buffer pools needed by the app - currently none. 67 */ 68 static int 69 init_mbuf_pools(void) 70 { 71 const unsigned int num_mbufs = (num_nodes * MBUFS_PER_NODE) + 72 (info->num_ports * MBUFS_PER_PORT); 73 74 /* 75 * Don't pass single-producer/single-consumer flags to mbuf create as it 76 * seems faster to use a cache instead 77 */ 78 printf("Creating mbuf pool '%s' [%u mbufs] ...\n", 79 PKTMBUF_POOL_NAME, num_mbufs); 80 pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs, 81 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 82 83 return pktmbuf_pool == NULL; /* 0 on success */ 84 } 85 86 /** 87 * Initialise an individual port: 88 * - configure number of rx and tx rings 89 * - set up each rx ring, to pull from the main mbuf pool 90 * - set up each tx ring 91 * - start the port and report its status to stdout 92 */ 93 static int 94 init_port(uint16_t port_num) 95 { 96 /* for port configuration all features are off by default */ 97 struct rte_eth_conf port_conf = { 98 .rxmode = { 99 .mq_mode = ETH_MQ_RX_RSS, 100 .ignore_offload_bitfield = 1, 101 }, 102 }; 103 const uint16_t rx_rings = 1, tx_rings = num_nodes; 104 uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT; 105 uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT; 106 struct rte_eth_dev_info dev_info; 107 struct rte_eth_txconf txconf; 108 109 uint16_t q; 110 int retval; 111 112 printf("Port %u init ... ", port_num); 113 fflush(stdout); 114 115 rte_eth_dev_info_get(port_num, &dev_info); 116 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE) 117 port_conf.txmode.offloads |= 118 DEV_TX_OFFLOAD_MBUF_FAST_FREE; 119 120 /* 121 * Standard DPDK port initialisation - config port, then set up 122 * rx and tx rings. 123 */ 124 retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, &port_conf); 125 if (retval != 0) 126 return retval; 127 128 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port_num, &rx_ring_size, 129 &tx_ring_size); 130 if (retval != 0) 131 return retval; 132 133 for (q = 0; q < rx_rings; q++) { 134 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size, 135 rte_eth_dev_socket_id(port_num), 136 NULL, pktmbuf_pool); 137 if (retval < 0) 138 return retval; 139 } 140 141 txconf = dev_info.default_txconf; 142 txconf.txq_flags = ETH_TXQ_FLAGS_IGNORE; 143 txconf.offloads = port_conf.txmode.offloads; 144 for (q = 0; q < tx_rings; q++) { 145 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size, 146 rte_eth_dev_socket_id(port_num), 147 &txconf); 148 if (retval < 0) 149 return retval; 150 } 151 152 rte_eth_promiscuous_enable(port_num); 153 154 retval = rte_eth_dev_start(port_num); 155 if (retval < 0) 156 return retval; 157 158 printf("done:\n"); 159 160 return 0; 161 } 162 163 /** 164 * Set up the DPDK rings which will be used to pass packets, via 165 * pointers, between the multi-process server and node processes. 166 * Each node needs one RX queue. 167 */ 168 static int 169 init_shm_rings(void) 170 { 171 unsigned int i; 172 unsigned int socket_id; 173 const char *q_name; 174 const unsigned int ringsize = NODE_QUEUE_RINGSIZE; 175 176 nodes = rte_malloc("node details", 177 sizeof(*nodes) * num_nodes, 0); 178 if (nodes == NULL) 179 rte_exit(EXIT_FAILURE, "Cannot allocate memory for " 180 "node program details\n"); 181 182 for (i = 0; i < num_nodes; i++) { 183 /* Create an RX queue for each node */ 184 socket_id = rte_socket_id(); 185 q_name = get_rx_queue_name(i); 186 nodes[i].rx_q = rte_ring_create(q_name, 187 ringsize, socket_id, 188 RING_F_SP_ENQ | RING_F_SC_DEQ); 189 if (nodes[i].rx_q == NULL) 190 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue " 191 "for node %u\n", i); 192 } 193 return 0; 194 } 195 196 /* 197 * Create EFD table which will contain all the flows 198 * that will be distributed among the nodes 199 */ 200 static void 201 create_efd_table(void) 202 { 203 uint8_t socket_id = rte_socket_id(); 204 205 /* create table */ 206 efd_table = rte_efd_create("flow table", num_flows * 2, sizeof(uint32_t), 207 1 << socket_id, socket_id); 208 209 if (efd_table == NULL) 210 rte_exit(EXIT_FAILURE, "Problem creating the flow table\n"); 211 } 212 213 static void 214 populate_efd_table(void) 215 { 216 unsigned int i; 217 int32_t ret; 218 uint32_t ip_dst; 219 uint8_t socket_id = rte_socket_id(); 220 uint64_t node_id; 221 222 /* Add flows in table */ 223 for (i = 0; i < num_flows; i++) { 224 node_id = i % num_nodes; 225 226 ip_dst = rte_cpu_to_be_32(i); 227 ret = rte_efd_update(efd_table, socket_id, 228 (void *)&ip_dst, (efd_value_t)node_id); 229 if (ret < 0) 230 rte_exit(EXIT_FAILURE, "Unable to add entry %u in " 231 "EFD table\n", i); 232 } 233 234 printf("EFD table: Adding 0x%x keys\n", num_flows); 235 } 236 237 /* Check the link status of all ports in up to 9s, and print them finally */ 238 static void 239 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask) 240 { 241 #define CHECK_INTERVAL 100 /* 100ms */ 242 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 243 uint8_t count, all_ports_up, print_flag = 0; 244 uint16_t portid; 245 struct rte_eth_link link; 246 247 printf("\nChecking link status"); 248 fflush(stdout); 249 for (count = 0; count <= MAX_CHECK_TIME; count++) { 250 all_ports_up = 1; 251 for (portid = 0; portid < port_num; portid++) { 252 if ((port_mask & (1 << info->id[portid])) == 0) 253 continue; 254 memset(&link, 0, sizeof(link)); 255 rte_eth_link_get_nowait(info->id[portid], &link); 256 /* print link status if flag set */ 257 if (print_flag == 1) { 258 if (link.link_status) 259 printf( 260 "Port%d Link Up. Speed %u Mbps - %s\n", 261 info->id[portid], 262 link.link_speed, 263 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? 264 ("full-duplex") : ("half-duplex\n")); 265 else 266 printf("Port %d Link Down\n", 267 info->id[portid]); 268 continue; 269 } 270 /* clear all_ports_up flag if any link down */ 271 if (link.link_status == ETH_LINK_DOWN) { 272 all_ports_up = 0; 273 break; 274 } 275 } 276 /* after finally printing all link status, get out */ 277 if (print_flag == 1) 278 break; 279 280 if (all_ports_up == 0) { 281 printf("."); 282 fflush(stdout); 283 rte_delay_ms(CHECK_INTERVAL); 284 } 285 286 /* set the print_flag if all ports up or timeout */ 287 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 288 print_flag = 1; 289 printf("done\n"); 290 } 291 } 292 } 293 294 /** 295 * Main init function for the multi-process server app, 296 * calls subfunctions to do each stage of the initialisation. 297 */ 298 int 299 init(int argc, char *argv[]) 300 { 301 int retval; 302 const struct rte_memzone *mz; 303 uint8_t i, total_ports; 304 305 /* init EAL, parsing EAL args */ 306 retval = rte_eal_init(argc, argv); 307 if (retval < 0) 308 return -1; 309 argc -= retval; 310 argv += retval; 311 312 /* get total number of ports */ 313 total_ports = rte_eth_dev_count(); 314 315 /* set up array for port data */ 316 mz = rte_memzone_reserve(MZ_SHARED_INFO, sizeof(*info), 317 rte_socket_id(), NO_FLAGS); 318 if (mz == NULL) 319 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone " 320 "for port information\n"); 321 memset(mz->addr, 0, sizeof(*info)); 322 info = mz->addr; 323 324 /* parse additional, application arguments */ 325 retval = parse_app_args(total_ports, argc, argv); 326 if (retval != 0) 327 return -1; 328 329 /* initialise mbuf pools */ 330 retval = init_mbuf_pools(); 331 if (retval != 0) 332 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); 333 334 /* now initialise the ports we will use */ 335 for (i = 0; i < info->num_ports; i++) { 336 retval = init_port(info->id[i]); 337 if (retval != 0) 338 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", 339 (unsigned int) i); 340 } 341 342 check_all_ports_link_status(info->num_ports, (~0x0)); 343 344 /* initialise the node queues/rings for inter-eu comms */ 345 init_shm_rings(); 346 347 /* Create the EFD table */ 348 create_efd_table(); 349 350 /* Populate the EFD table */ 351 populate_efd_table(); 352 353 /* Share the total number of nodes */ 354 info->num_nodes = num_nodes; 355 356 /* Share the total number of flows */ 357 info->num_flows = num_flows; 358 return 0; 359 } 360