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_launch.h> 19 #include <rte_per_lcore.h> 20 #include <rte_lcore.h> 21 #include <rte_branch_prediction.h> 22 #include <rte_debug.h> 23 #include <rte_ring.h> 24 #include <rte_log.h> 25 #include <rte_mempool.h> 26 #include <rte_memcpy.h> 27 #include <rte_mbuf.h> 28 #include <rte_interrupts.h> 29 #include <rte_ether.h> 30 #include <rte_ethdev.h> 31 #include <rte_malloc.h> 32 #include <rte_string_fns.h> 33 #include <rte_cycles.h> 34 35 #include "common.h" 36 #include "args.h" 37 #include "init.h" 38 39 #define MBUF_CACHE_SIZE 512 40 41 #define RTE_MP_RX_DESC_DEFAULT 1024 42 #define RTE_MP_TX_DESC_DEFAULT 1024 43 #define CLIENT_QUEUE_RINGSIZE 128 44 45 #define NO_FLAGS 0 46 47 /* The mbuf pool for packet rx */ 48 struct rte_mempool *pktmbuf_pool; 49 50 /* array of info/queues for clients */ 51 struct client *clients = NULL; 52 53 /* the port details */ 54 struct port_info *ports; 55 56 /** 57 * Initialise the mbuf pool for packet reception for the NIC, and any other 58 * buffer pools needed by the app - currently none. 59 */ 60 static int 61 init_mbuf_pools(void) 62 { 63 const unsigned int num_mbufs_server = 64 RTE_MP_RX_DESC_DEFAULT * ports->num_ports; 65 const unsigned int num_mbufs_client = 66 num_clients * (CLIENT_QUEUE_RINGSIZE + 67 RTE_MP_TX_DESC_DEFAULT * ports->num_ports); 68 const unsigned int num_mbufs_mp_cache = 69 (num_clients + 1) * MBUF_CACHE_SIZE; 70 const unsigned int num_mbufs = 71 num_mbufs_server + num_mbufs_client + num_mbufs_mp_cache; 72 73 /* don't pass single-producer/single-consumer flags to mbuf create as it 74 * seems faster to use a cache instead */ 75 printf("Creating mbuf pool '%s' [%u mbufs] ...\n", 76 PKTMBUF_POOL_NAME, num_mbufs); 77 pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs, 78 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 79 80 return pktmbuf_pool == NULL; /* 0 on success */ 81 } 82 83 /** 84 * Initialise an individual port: 85 * - configure number of rx and tx rings 86 * - set up each rx ring, to pull from the main mbuf pool 87 * - set up each tx ring 88 * - start the port and report its status to stdout 89 */ 90 static int 91 init_port(uint16_t port_num) 92 { 93 /* for port configuration all features are off by default */ 94 const struct rte_eth_conf port_conf = { 95 .rxmode = { 96 .mq_mode = RTE_ETH_MQ_RX_RSS 97 } 98 }; 99 const uint16_t rx_rings = 1, tx_rings = num_clients; 100 uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT; 101 uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT; 102 103 uint16_t q; 104 int retval; 105 106 printf("Port %u init ... ", port_num); 107 fflush(stdout); 108 109 /* Standard DPDK port initialisation - config port, then set up 110 * rx and tx rings */ 111 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, 112 &port_conf)) != 0) 113 return retval; 114 115 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port_num, &rx_ring_size, 116 &tx_ring_size); 117 if (retval != 0) 118 return retval; 119 120 for (q = 0; q < rx_rings; q++) { 121 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size, 122 rte_eth_dev_socket_id(port_num), 123 NULL, pktmbuf_pool); 124 if (retval < 0) return retval; 125 } 126 127 for ( q = 0; q < tx_rings; q ++ ) { 128 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size, 129 rte_eth_dev_socket_id(port_num), 130 NULL); 131 if (retval < 0) return retval; 132 } 133 134 retval = rte_eth_promiscuous_enable(port_num); 135 if (retval < 0) 136 return retval; 137 138 retval = rte_eth_dev_start(port_num); 139 if (retval < 0) return retval; 140 141 printf( "done: \n"); 142 143 return 0; 144 } 145 146 /** 147 * Set up the DPDK rings which will be used to pass packets, via 148 * pointers, between the multi-process server and client processes. 149 * Each client needs one RX queue. 150 */ 151 static int 152 init_shm_rings(void) 153 { 154 unsigned i; 155 unsigned socket_id; 156 const char * q_name; 157 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE; 158 159 clients = rte_malloc("client details", 160 sizeof(*clients) * num_clients, 0); 161 if (clients == NULL) 162 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n"); 163 164 for (i = 0; i < num_clients; i++) { 165 /* Create an RX queue for each client */ 166 socket_id = rte_socket_id(); 167 q_name = get_rx_queue_name(i); 168 clients[i].rx_q = rte_ring_create(q_name, 169 ringsize, socket_id, 170 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */ 171 if (clients[i].rx_q == NULL) 172 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i); 173 } 174 return 0; 175 } 176 177 /* Check the link status of all ports in up to 9s, and print them finally */ 178 static void 179 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask) 180 { 181 #define CHECK_INTERVAL 100 /* 100ms */ 182 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 183 uint16_t portid; 184 uint8_t count, all_ports_up, print_flag = 0; 185 struct rte_eth_link link; 186 int ret; 187 char link_status_text[RTE_ETH_LINK_MAX_STR_LEN]; 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 rte_eth_link_to_str(link_status_text, 208 sizeof(link_status_text), &link); 209 printf("Port %d %s\n", 210 ports->id[portid], 211 link_status_text); 212 continue; 213 } 214 /* clear all_ports_up flag if any link down */ 215 if (link.link_status == RTE_ETH_LINK_DOWN) { 216 all_ports_up = 0; 217 break; 218 } 219 } 220 /* after finally printing all link status, get out */ 221 if (print_flag == 1) 222 break; 223 224 if (all_ports_up == 0) { 225 printf("."); 226 fflush(stdout); 227 rte_delay_ms(CHECK_INTERVAL); 228 } 229 230 /* set the print_flag if all ports up or timeout */ 231 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 232 print_flag = 1; 233 printf("done\n"); 234 } 235 } 236 } 237 238 /** 239 * Main init function for the multi-process server app, 240 * calls subfunctions to do each stage of the initialisation. 241 */ 242 int 243 init(int argc, char *argv[]) 244 { 245 int retval; 246 const struct rte_memzone *mz; 247 uint16_t i; 248 249 /* init EAL, parsing EAL args */ 250 retval = rte_eal_init(argc, argv); 251 if (retval < 0) 252 return -1; 253 argc -= retval; 254 argv += retval; 255 256 /* set up array for port data */ 257 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports), 258 rte_socket_id(), NO_FLAGS); 259 if (mz == NULL) 260 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n"); 261 memset(mz->addr, 0, sizeof(*ports)); 262 ports = mz->addr; 263 264 /* parse additional, application arguments */ 265 retval = parse_app_args(argc, argv); 266 if (retval != 0) 267 return -1; 268 269 /* initialise mbuf pools */ 270 retval = init_mbuf_pools(); 271 if (retval != 0) 272 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); 273 274 /* now initialise the ports we will use */ 275 for (i = 0; i < ports->num_ports; i++) { 276 retval = init_port(ports->id[i]); 277 if (retval != 0) 278 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", 279 (unsigned)i); 280 } 281 282 check_all_ports_link_status(ports->num_ports, (~0x0)); 283 284 /* initialise the client queues/rings for inter-eu comms */ 285 init_shm_rings(); 286 287 return 0; 288 } 289