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 MBUFS_PER_CLIENT 1536 41 #define MBUFS_PER_PORT 1536 42 #define MBUF_CACHE_SIZE 512 43 44 #define RTE_MP_RX_DESC_DEFAULT 1024 45 #define RTE_MP_TX_DESC_DEFAULT 1024 46 #define CLIENT_QUEUE_RINGSIZE 128 47 48 #define NO_FLAGS 0 49 50 /* The mbuf pool for packet rx */ 51 struct rte_mempool *pktmbuf_pool; 52 53 /* array of info/queues for clients */ 54 struct client *clients = NULL; 55 56 /* the port details */ 57 struct port_info *ports; 58 59 /** 60 * Initialise the mbuf pool for packet reception for the NIC, and any other 61 * buffer pools needed by the app - currently none. 62 */ 63 static int 64 init_mbuf_pools(void) 65 { 66 const unsigned num_mbufs = (num_clients * MBUFS_PER_CLIENT) \ 67 + (ports->num_ports * MBUFS_PER_PORT); 68 69 /* don't pass single-producer/single-consumer flags to mbuf create as it 70 * seems faster to use a cache instead */ 71 printf("Creating mbuf pool '%s' [%u mbufs] ...\n", 72 PKTMBUF_POOL_NAME, num_mbufs); 73 pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs, 74 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 75 76 return pktmbuf_pool == NULL; /* 0 on success */ 77 } 78 79 /** 80 * Initialise an individual port: 81 * - configure number of rx and tx rings 82 * - set up each rx ring, to pull from the main mbuf pool 83 * - set up each tx ring 84 * - start the port and report its status to stdout 85 */ 86 static int 87 init_port(uint16_t port_num) 88 { 89 /* for port configuration all features are off by default */ 90 const struct rte_eth_conf port_conf = { 91 .rxmode = { 92 .mq_mode = ETH_MQ_RX_RSS 93 } 94 }; 95 const uint16_t rx_rings = 1, tx_rings = num_clients; 96 uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT; 97 uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT; 98 99 uint16_t q; 100 int retval; 101 102 printf("Port %u init ... ", port_num); 103 fflush(stdout); 104 105 /* Standard DPDK port initialisation - config port, then set up 106 * rx and tx rings */ 107 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, 108 &port_conf)) != 0) 109 return retval; 110 111 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port_num, &rx_ring_size, 112 &tx_ring_size); 113 if (retval != 0) 114 return retval; 115 116 for (q = 0; q < rx_rings; q++) { 117 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size, 118 rte_eth_dev_socket_id(port_num), 119 NULL, pktmbuf_pool); 120 if (retval < 0) return retval; 121 } 122 123 for ( q = 0; q < tx_rings; q ++ ) { 124 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size, 125 rte_eth_dev_socket_id(port_num), 126 NULL); 127 if (retval < 0) return retval; 128 } 129 130 rte_eth_promiscuous_enable(port_num); 131 132 retval = rte_eth_dev_start(port_num); 133 if (retval < 0) return retval; 134 135 printf( "done: \n"); 136 137 return 0; 138 } 139 140 /** 141 * Set up the DPDK rings which will be used to pass packets, via 142 * pointers, between the multi-process server and client processes. 143 * Each client needs one RX queue. 144 */ 145 static int 146 init_shm_rings(void) 147 { 148 unsigned i; 149 unsigned socket_id; 150 const char * q_name; 151 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE; 152 153 clients = rte_malloc("client details", 154 sizeof(*clients) * num_clients, 0); 155 if (clients == NULL) 156 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n"); 157 158 for (i = 0; i < num_clients; i++) { 159 /* Create an RX queue for each client */ 160 socket_id = rte_socket_id(); 161 q_name = get_rx_queue_name(i); 162 clients[i].rx_q = rte_ring_create(q_name, 163 ringsize, socket_id, 164 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */ 165 if (clients[i].rx_q == NULL) 166 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i); 167 } 168 return 0; 169 } 170 171 /* Check the link status of all ports in up to 9s, and print them finally */ 172 static void 173 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask) 174 { 175 #define CHECK_INTERVAL 100 /* 100ms */ 176 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 177 uint16_t portid; 178 uint8_t count, all_ports_up, print_flag = 0; 179 struct rte_eth_link link; 180 181 printf("\nChecking link status"); 182 fflush(stdout); 183 for (count = 0; count <= MAX_CHECK_TIME; count++) { 184 all_ports_up = 1; 185 for (portid = 0; portid < port_num; portid++) { 186 if ((port_mask & (1 << ports->id[portid])) == 0) 187 continue; 188 memset(&link, 0, sizeof(link)); 189 rte_eth_link_get_nowait(ports->id[portid], &link); 190 /* print link status if flag set */ 191 if (print_flag == 1) { 192 if (link.link_status) 193 printf("Port %d Link Up - speed %u " 194 "Mbps - %s\n", ports->id[portid], 195 (unsigned)link.link_speed, 196 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? 197 ("full-duplex") : ("half-duplex\n")); 198 else 199 printf("Port %d Link Down\n", 200 (uint8_t)ports->id[portid]); 201 continue; 202 } 203 /* clear all_ports_up flag if any link down */ 204 if (link.link_status == ETH_LINK_DOWN) { 205 all_ports_up = 0; 206 break; 207 } 208 } 209 /* after finally printing all link status, get out */ 210 if (print_flag == 1) 211 break; 212 213 if (all_ports_up == 0) { 214 printf("."); 215 fflush(stdout); 216 rte_delay_ms(CHECK_INTERVAL); 217 } 218 219 /* set the print_flag if all ports up or timeout */ 220 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 221 print_flag = 1; 222 printf("done\n"); 223 } 224 } 225 } 226 227 /** 228 * Main init function for the multi-process server app, 229 * calls subfunctions to do each stage of the initialisation. 230 */ 231 int 232 init(int argc, char *argv[]) 233 { 234 int retval; 235 const struct rte_memzone *mz; 236 uint16_t i, total_ports; 237 238 /* init EAL, parsing EAL args */ 239 retval = rte_eal_init(argc, argv); 240 if (retval < 0) 241 return -1; 242 argc -= retval; 243 argv += retval; 244 245 /* get total number of ports */ 246 total_ports = rte_eth_dev_count_total(); 247 248 /* set up array for port data */ 249 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports), 250 rte_socket_id(), NO_FLAGS); 251 if (mz == NULL) 252 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n"); 253 memset(mz->addr, 0, sizeof(*ports)); 254 ports = mz->addr; 255 256 /* parse additional, application arguments */ 257 retval = parse_app_args(total_ports, argc, argv); 258 if (retval != 0) 259 return -1; 260 261 /* initialise mbuf pools */ 262 retval = init_mbuf_pools(); 263 if (retval != 0) 264 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); 265 266 /* now initialise the ports we will use */ 267 for (i = 0; i < ports->num_ports; i++) { 268 retval = init_port(ports->id[i]); 269 if (retval != 0) 270 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", 271 (unsigned)i); 272 } 273 274 check_all_ports_link_status(ports->num_ports, (~0x0)); 275 276 /* initialise the client queues/rings for inter-eu comms */ 277 init_shm_rings(); 278 279 return 0; 280 } 281