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 <stdlib.h> 8 #include <string.h> 9 #include <sys/queue.h> 10 #include <errno.h> 11 #include <stdarg.h> 12 #include <inttypes.h> 13 14 #include <rte_common.h> 15 #include <rte_memory.h> 16 #include <rte_memzone.h> 17 #include <rte_eal.h> 18 #include <rte_byteorder.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 = RTE_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 char link_status_text[RTE_ETH_LINK_MAX_STR_LEN]; 189 190 printf("\nChecking link status"); 191 fflush(stdout); 192 for (count = 0; count <= MAX_CHECK_TIME; count++) { 193 all_ports_up = 1; 194 for (portid = 0; portid < port_num; portid++) { 195 if ((port_mask & (1 << ports->id[portid])) == 0) 196 continue; 197 memset(&link, 0, sizeof(link)); 198 ret = rte_eth_link_get_nowait(ports->id[portid], &link); 199 if (ret < 0) { 200 all_ports_up = 0; 201 if (print_flag == 1) 202 printf("Port %u link get failed: %s\n", 203 portid, rte_strerror(-ret)); 204 continue; 205 } 206 /* print link status if flag set */ 207 if (print_flag == 1) { 208 rte_eth_link_to_str(link_status_text, 209 sizeof(link_status_text), &link); 210 printf("Port %d %s\n", 211 ports->id[portid], 212 link_status_text); 213 continue; 214 } 215 /* clear all_ports_up flag if any link down */ 216 if (link.link_status == RTE_ETH_LINK_DOWN) { 217 all_ports_up = 0; 218 break; 219 } 220 } 221 /* after finally printing all link status, get out */ 222 if (print_flag == 1) 223 break; 224 225 if (all_ports_up == 0) { 226 printf("."); 227 fflush(stdout); 228 rte_delay_ms(CHECK_INTERVAL); 229 } 230 231 /* set the print_flag if all ports up or timeout */ 232 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 233 print_flag = 1; 234 printf("done\n"); 235 } 236 } 237 } 238 239 /** 240 * Main init function for the multi-process server app, 241 * calls subfunctions to do each stage of the initialisation. 242 */ 243 int 244 init(int argc, char *argv[]) 245 { 246 int retval; 247 const struct rte_memzone *mz; 248 uint16_t i; 249 250 /* init EAL, parsing EAL args */ 251 retval = rte_eal_init(argc, argv); 252 if (retval < 0) 253 return -1; 254 argc -= retval; 255 argv += retval; 256 257 /* set up array for port data */ 258 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports), 259 rte_socket_id(), NO_FLAGS); 260 if (mz == NULL) 261 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n"); 262 memset(mz->addr, 0, sizeof(*ports)); 263 ports = mz->addr; 264 265 /* parse additional, application arguments */ 266 retval = parse_app_args(argc, argv); 267 if (retval != 0) 268 return -1; 269 270 /* initialise mbuf pools */ 271 retval = init_mbuf_pools(); 272 if (retval != 0) 273 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); 274 275 /* now initialise the ports we will use */ 276 for (i = 0; i < ports->num_ports; i++) { 277 retval = init_port(ports->id[i]); 278 if (retval != 0) 279 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", 280 (unsigned)i); 281 } 282 283 check_all_ports_link_status(ports->num_ports, (~0x0)); 284 285 /* initialise the client queues/rings for inter-eu comms */ 286 init_shm_rings(); 287 288 return 0; 289 } 290