1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2014 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 36 #include "common.h" 37 #include "args.h" 38 #include "init.h" 39 40 #define MBUF_CACHE_SIZE 512 41 42 #define RTE_MP_RX_DESC_DEFAULT 1024 43 #define RTE_MP_TX_DESC_DEFAULT 1024 44 #define CLIENT_QUEUE_RINGSIZE 128 45 46 #define NO_FLAGS 0 47 48 /* The mbuf pool for packet rx */ 49 struct rte_mempool *pktmbuf_pool; 50 51 /* array of info/queues for clients */ 52 struct client *clients = NULL; 53 54 /* the port details */ 55 struct port_info *ports; 56 57 /** 58 * Initialise the mbuf pool for packet reception for the NIC, and any other 59 * buffer pools needed by the app - currently none. 60 */ 61 static int 62 init_mbuf_pools(void) 63 { 64 const unsigned int num_mbufs_server = 65 RTE_MP_RX_DESC_DEFAULT * ports->num_ports; 66 const unsigned int num_mbufs_client = 67 num_clients * (CLIENT_QUEUE_RINGSIZE + 68 RTE_MP_TX_DESC_DEFAULT * ports->num_ports); 69 const unsigned int num_mbufs_mp_cache = 70 (num_clients + 1) * MBUF_CACHE_SIZE; 71 const unsigned int num_mbufs = 72 num_mbufs_server + num_mbufs_client + num_mbufs_mp_cache; 73 74 /* don't pass single-producer/single-consumer flags to mbuf create as it 75 * seems faster to use a cache instead */ 76 printf("Creating mbuf pool '%s' [%u mbufs] ...\n", 77 PKTMBUF_POOL_NAME, num_mbufs); 78 pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs, 79 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 80 81 return pktmbuf_pool == NULL; /* 0 on success */ 82 } 83 84 /** 85 * Initialise an individual port: 86 * - configure number of rx and tx rings 87 * - set up each rx ring, to pull from the main mbuf pool 88 * - set up each tx ring 89 * - start the port and report its status to stdout 90 */ 91 static int 92 init_port(uint16_t port_num) 93 { 94 /* for port configuration all features are off by default */ 95 const struct rte_eth_conf port_conf = { 96 .rxmode = { 97 .mq_mode = ETH_MQ_RX_RSS 98 } 99 }; 100 const uint16_t rx_rings = 1, tx_rings = num_clients; 101 uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT; 102 uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT; 103 104 uint16_t q; 105 int retval; 106 107 printf("Port %u init ... ", port_num); 108 fflush(stdout); 109 110 /* Standard DPDK port initialisation - config port, then set up 111 * rx and tx rings */ 112 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, 113 &port_conf)) != 0) 114 return retval; 115 116 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port_num, &rx_ring_size, 117 &tx_ring_size); 118 if (retval != 0) 119 return retval; 120 121 for (q = 0; q < rx_rings; q++) { 122 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size, 123 rte_eth_dev_socket_id(port_num), 124 NULL, pktmbuf_pool); 125 if (retval < 0) return retval; 126 } 127 128 for ( q = 0; q < tx_rings; q ++ ) { 129 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size, 130 rte_eth_dev_socket_id(port_num), 131 NULL); 132 if (retval < 0) return retval; 133 } 134 135 retval = rte_eth_promiscuous_enable(port_num); 136 if (retval < 0) 137 return retval; 138 139 retval = rte_eth_dev_start(port_num); 140 if (retval < 0) return retval; 141 142 printf( "done: \n"); 143 144 return 0; 145 } 146 147 /** 148 * Set up the DPDK rings which will be used to pass packets, via 149 * pointers, between the multi-process server and client processes. 150 * Each client needs one RX queue. 151 */ 152 static int 153 init_shm_rings(void) 154 { 155 unsigned i; 156 unsigned socket_id; 157 const char * q_name; 158 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE; 159 160 clients = rte_malloc("client details", 161 sizeof(*clients) * num_clients, 0); 162 if (clients == NULL) 163 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n"); 164 165 for (i = 0; i < num_clients; i++) { 166 /* Create an RX queue for each client */ 167 socket_id = rte_socket_id(); 168 q_name = get_rx_queue_name(i); 169 clients[i].rx_q = rte_ring_create(q_name, 170 ringsize, socket_id, 171 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */ 172 if (clients[i].rx_q == NULL) 173 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i); 174 } 175 return 0; 176 } 177 178 /* Check the link status of all ports in up to 9s, and print them finally */ 179 static void 180 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask) 181 { 182 #define CHECK_INTERVAL 100 /* 100ms */ 183 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 184 uint16_t portid; 185 uint8_t count, all_ports_up, print_flag = 0; 186 struct rte_eth_link link; 187 int ret; 188 189 printf("\nChecking link status"); 190 fflush(stdout); 191 for (count = 0; count <= MAX_CHECK_TIME; count++) { 192 all_ports_up = 1; 193 for (portid = 0; portid < port_num; portid++) { 194 if ((port_mask & (1 << ports->id[portid])) == 0) 195 continue; 196 memset(&link, 0, sizeof(link)); 197 ret = rte_eth_link_get_nowait(ports->id[portid], &link); 198 if (ret < 0) { 199 all_ports_up = 0; 200 if (print_flag == 1) 201 printf("Port %u link get failed: %s\n", 202 portid, rte_strerror(-ret)); 203 continue; 204 } 205 /* print link status if flag set */ 206 if (print_flag == 1) { 207 if (link.link_status) 208 printf("Port %d Link Up - speed %u " 209 "Mbps - %s\n", ports->id[portid], 210 (unsigned)link.link_speed, 211 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? 212 ("full-duplex") : ("half-duplex")); 213 else 214 printf("Port %d Link Down\n", 215 (uint8_t)ports->id[portid]); 216 continue; 217 } 218 /* clear all_ports_up flag if any link down */ 219 if (link.link_status == ETH_LINK_DOWN) { 220 all_ports_up = 0; 221 break; 222 } 223 } 224 /* after finally printing all link status, get out */ 225 if (print_flag == 1) 226 break; 227 228 if (all_ports_up == 0) { 229 printf("."); 230 fflush(stdout); 231 rte_delay_ms(CHECK_INTERVAL); 232 } 233 234 /* set the print_flag if all ports up or timeout */ 235 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 236 print_flag = 1; 237 printf("done\n"); 238 } 239 } 240 } 241 242 /** 243 * Main init function for the multi-process server app, 244 * calls subfunctions to do each stage of the initialisation. 245 */ 246 int 247 init(int argc, char *argv[]) 248 { 249 int retval; 250 const struct rte_memzone *mz; 251 uint16_t i; 252 253 /* init EAL, parsing EAL args */ 254 retval = rte_eal_init(argc, argv); 255 if (retval < 0) 256 return -1; 257 argc -= retval; 258 argv += retval; 259 260 /* set up array for port data */ 261 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports), 262 rte_socket_id(), NO_FLAGS); 263 if (mz == NULL) 264 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n"); 265 memset(mz->addr, 0, sizeof(*ports)); 266 ports = mz->addr; 267 268 /* parse additional, application arguments */ 269 retval = parse_app_args(argc, argv); 270 if (retval != 0) 271 return -1; 272 273 /* initialise mbuf pools */ 274 retval = init_mbuf_pools(); 275 if (retval != 0) 276 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); 277 278 /* now initialise the ports we will use */ 279 for (i = 0; i < ports->num_ports; i++) { 280 retval = init_port(ports->id[i]); 281 if (retval != 0) 282 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", 283 (unsigned)i); 284 } 285 286 check_all_ports_link_status(ports->num_ports, (~0x0)); 287 288 /* initialise the client queues/rings for inter-eu comms */ 289 init_shm_rings(); 290 291 return 0; 292 } 293