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 rte_eth_promiscuous_enable(port_num); 136 137 retval = rte_eth_dev_start(port_num); 138 if (retval < 0) return retval; 139 140 printf( "done: \n"); 141 142 return 0; 143 } 144 145 /** 146 * Set up the DPDK rings which will be used to pass packets, via 147 * pointers, between the multi-process server and client processes. 148 * Each client needs one RX queue. 149 */ 150 static int 151 init_shm_rings(void) 152 { 153 unsigned i; 154 unsigned socket_id; 155 const char * q_name; 156 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE; 157 158 clients = rte_malloc("client details", 159 sizeof(*clients) * num_clients, 0); 160 if (clients == NULL) 161 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n"); 162 163 for (i = 0; i < num_clients; i++) { 164 /* Create an RX queue for each client */ 165 socket_id = rte_socket_id(); 166 q_name = get_rx_queue_name(i); 167 clients[i].rx_q = rte_ring_create(q_name, 168 ringsize, socket_id, 169 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */ 170 if (clients[i].rx_q == NULL) 171 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i); 172 } 173 return 0; 174 } 175 176 /* Check the link status of all ports in up to 9s, and print them finally */ 177 static void 178 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask) 179 { 180 #define CHECK_INTERVAL 100 /* 100ms */ 181 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 182 uint16_t portid; 183 uint8_t count, all_ports_up, print_flag = 0; 184 struct rte_eth_link link; 185 186 printf("\nChecking link status"); 187 fflush(stdout); 188 for (count = 0; count <= MAX_CHECK_TIME; count++) { 189 all_ports_up = 1; 190 for (portid = 0; portid < port_num; portid++) { 191 if ((port_mask & (1 << ports->id[portid])) == 0) 192 continue; 193 memset(&link, 0, sizeof(link)); 194 rte_eth_link_get_nowait(ports->id[portid], &link); 195 /* print link status if flag set */ 196 if (print_flag == 1) { 197 if (link.link_status) 198 printf("Port %d Link Up - speed %u " 199 "Mbps - %s\n", ports->id[portid], 200 (unsigned)link.link_speed, 201 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? 202 ("full-duplex") : ("half-duplex\n")); 203 else 204 printf("Port %d Link Down\n", 205 (uint8_t)ports->id[portid]); 206 continue; 207 } 208 /* clear all_ports_up flag if any link down */ 209 if (link.link_status == ETH_LINK_DOWN) { 210 all_ports_up = 0; 211 break; 212 } 213 } 214 /* after finally printing all link status, get out */ 215 if (print_flag == 1) 216 break; 217 218 if (all_ports_up == 0) { 219 printf("."); 220 fflush(stdout); 221 rte_delay_ms(CHECK_INTERVAL); 222 } 223 224 /* set the print_flag if all ports up or timeout */ 225 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 226 print_flag = 1; 227 printf("done\n"); 228 } 229 } 230 } 231 232 /** 233 * Main init function for the multi-process server app, 234 * calls subfunctions to do each stage of the initialisation. 235 */ 236 int 237 init(int argc, char *argv[]) 238 { 239 int retval; 240 const struct rte_memzone *mz; 241 uint16_t i, total_ports; 242 243 /* init EAL, parsing EAL args */ 244 retval = rte_eal_init(argc, argv); 245 if (retval < 0) 246 return -1; 247 argc -= retval; 248 argv += retval; 249 250 /* get total number of ports */ 251 total_ports = rte_eth_dev_count_total(); 252 253 /* set up array for port data */ 254 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports), 255 rte_socket_id(), NO_FLAGS); 256 if (mz == NULL) 257 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n"); 258 memset(mz->addr, 0, sizeof(*ports)); 259 ports = mz->addr; 260 261 /* parse additional, application arguments */ 262 retval = parse_app_args(total_ports, argc, argv); 263 if (retval != 0) 264 return -1; 265 266 /* initialise mbuf pools */ 267 retval = init_mbuf_pools(); 268 if (retval != 0) 269 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); 270 271 /* now initialise the ports we will use */ 272 for (i = 0; i < ports->num_ports; i++) { 273 retval = init_port(ports->id[i]); 274 if (retval != 0) 275 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", 276 (unsigned)i); 277 } 278 279 check_all_ports_link_status(ports->num_ports, (~0x0)); 280 281 /* initialise the client queues/rings for inter-eu comms */ 282 init_shm_rings(); 283 284 return 0; 285 } 286