1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2016 Intel Corporation 3 */ 4 5 #include <stdio.h> 6 #include <getopt.h> 7 8 #include <rte_common.h> 9 #include <rte_eal.h> 10 #include <rte_malloc.h> 11 #include <rte_mempool.h> 12 #include <rte_ethdev.h> 13 #include <rte_cycles.h> 14 #include <rte_mbuf.h> 15 #include <rte_meter.h> 16 17 /* 18 * Traffic metering configuration 19 * 20 */ 21 #define APP_MODE_FWD 0 22 #define APP_MODE_SRTCM_COLOR_BLIND 1 23 #define APP_MODE_SRTCM_COLOR_AWARE 2 24 #define APP_MODE_TRTCM_COLOR_BLIND 3 25 #define APP_MODE_TRTCM_COLOR_AWARE 4 26 27 #define APP_MODE APP_MODE_SRTCM_COLOR_BLIND 28 29 30 #include "main.h" 31 32 33 #define APP_PKT_FLOW_POS 33 34 #define APP_PKT_COLOR_POS 5 35 36 37 #if APP_PKT_FLOW_POS > 64 || APP_PKT_COLOR_POS > 64 38 #error Byte offset needs to be less than 64 39 #endif 40 41 /* 42 * Buffer pool configuration 43 * 44 ***/ 45 #define NB_MBUF 8192 46 #define MEMPOOL_CACHE_SIZE 256 47 48 static struct rte_mempool *pool = NULL; 49 50 /* 51 * NIC configuration 52 * 53 ***/ 54 static struct rte_eth_conf port_conf = { 55 .rxmode = { 56 .mq_mode = ETH_MQ_RX_RSS, 57 .max_rx_pkt_len = ETHER_MAX_LEN, 58 .split_hdr_size = 0, 59 .ignore_offload_bitfield = 1, 60 .offloads = (DEV_RX_OFFLOAD_CHECKSUM | 61 DEV_RX_OFFLOAD_CRC_STRIP), 62 }, 63 .rx_adv_conf = { 64 .rss_conf = { 65 .rss_key = NULL, 66 .rss_hf = ETH_RSS_IP, 67 }, 68 }, 69 .txmode = { 70 .mq_mode = ETH_DCB_NONE, 71 }, 72 }; 73 74 #define NIC_RX_QUEUE_DESC 128 75 #define NIC_TX_QUEUE_DESC 512 76 77 #define NIC_RX_QUEUE 0 78 #define NIC_TX_QUEUE 0 79 80 /* 81 * Packet RX/TX 82 * 83 ***/ 84 #define PKT_RX_BURST_MAX 32 85 #define PKT_TX_BURST_MAX 32 86 #define TIME_TX_DRAIN 200000ULL 87 88 static uint16_t port_rx; 89 static uint16_t port_tx; 90 static struct rte_mbuf *pkts_rx[PKT_RX_BURST_MAX]; 91 struct rte_eth_dev_tx_buffer *tx_buffer; 92 93 struct rte_meter_srtcm_params app_srtcm_params[] = { 94 {.cir = 1000000 * 46, .cbs = 2048, .ebs = 2048}, 95 }; 96 97 struct rte_meter_trtcm_params app_trtcm_params[] = { 98 {.cir = 1000000 * 46, .pir = 1500000 * 46, .cbs = 2048, .pbs = 2048}, 99 }; 100 101 #define APP_FLOWS_MAX 256 102 103 FLOW_METER app_flows[APP_FLOWS_MAX]; 104 105 static int 106 app_configure_flow_table(void) 107 { 108 uint32_t i, j; 109 int ret; 110 111 for (i = 0, j = 0; i < APP_FLOWS_MAX; 112 i ++, j = (j + 1) % RTE_DIM(PARAMS)) { 113 ret = FUNC_CONFIG(&app_flows[i], &PARAMS[j]); 114 if (ret) 115 return ret; 116 } 117 118 return 0; 119 } 120 121 static inline void 122 app_set_pkt_color(uint8_t *pkt_data, enum policer_action color) 123 { 124 pkt_data[APP_PKT_COLOR_POS] = (uint8_t)color; 125 } 126 127 static inline int 128 app_pkt_handle(struct rte_mbuf *pkt, uint64_t time) 129 { 130 uint8_t input_color, output_color; 131 uint8_t *pkt_data = rte_pktmbuf_mtod(pkt, uint8_t *); 132 uint32_t pkt_len = rte_pktmbuf_pkt_len(pkt) - sizeof(struct ether_hdr); 133 uint8_t flow_id = (uint8_t)(pkt_data[APP_PKT_FLOW_POS] & (APP_FLOWS_MAX - 1)); 134 input_color = pkt_data[APP_PKT_COLOR_POS]; 135 enum policer_action action; 136 137 /* color input is not used for blind modes */ 138 output_color = (uint8_t) FUNC_METER(&app_flows[flow_id], time, pkt_len, 139 (enum rte_meter_color) input_color); 140 141 /* Apply policing and set the output color */ 142 action = policer_table[input_color][output_color]; 143 app_set_pkt_color(pkt_data, action); 144 145 return action; 146 } 147 148 149 static __attribute__((noreturn)) int 150 main_loop(__attribute__((unused)) void *dummy) 151 { 152 uint64_t current_time, last_time = rte_rdtsc(); 153 uint32_t lcore_id = rte_lcore_id(); 154 155 printf("Core %u: port RX = %d, port TX = %d\n", lcore_id, port_rx, port_tx); 156 157 while (1) { 158 uint64_t time_diff; 159 int i, nb_rx; 160 161 /* Mechanism to avoid stale packets in the output buffer */ 162 current_time = rte_rdtsc(); 163 time_diff = current_time - last_time; 164 if (unlikely(time_diff > TIME_TX_DRAIN)) { 165 /* Flush tx buffer */ 166 rte_eth_tx_buffer_flush(port_tx, NIC_TX_QUEUE, tx_buffer); 167 last_time = current_time; 168 } 169 170 /* Read packet burst from NIC RX */ 171 nb_rx = rte_eth_rx_burst(port_rx, NIC_RX_QUEUE, pkts_rx, PKT_RX_BURST_MAX); 172 173 /* Handle packets */ 174 for (i = 0; i < nb_rx; i ++) { 175 struct rte_mbuf *pkt = pkts_rx[i]; 176 177 /* Handle current packet */ 178 if (app_pkt_handle(pkt, current_time) == DROP) 179 rte_pktmbuf_free(pkt); 180 else 181 rte_eth_tx_buffer(port_tx, NIC_TX_QUEUE, tx_buffer, pkt); 182 } 183 } 184 } 185 186 static void 187 print_usage(const char *prgname) 188 { 189 printf ("%s [EAL options] -- -p PORTMASK\n" 190 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 191 prgname); 192 } 193 194 static int 195 parse_portmask(const char *portmask) 196 { 197 char *end = NULL; 198 unsigned long pm; 199 200 /* parse hexadecimal string */ 201 pm = strtoul(portmask, &end, 16); 202 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 203 return -1; 204 205 if (pm == 0) 206 return -1; 207 208 return pm; 209 } 210 211 /* Parse the argument given in the command line of the application */ 212 static int 213 parse_args(int argc, char **argv) 214 { 215 int opt; 216 char **argvopt; 217 int option_index; 218 char *prgname = argv[0]; 219 static struct option lgopts[] = { 220 {NULL, 0, 0, 0} 221 }; 222 uint64_t port_mask, i, mask; 223 224 argvopt = argv; 225 226 while ((opt = getopt_long(argc, argvopt, "p:", lgopts, &option_index)) != EOF) { 227 switch (opt) { 228 case 'p': 229 port_mask = parse_portmask(optarg); 230 if (port_mask == 0) { 231 printf("invalid port mask (null port mask)\n"); 232 print_usage(prgname); 233 return -1; 234 } 235 236 for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){ 237 if (mask & port_mask){ 238 port_rx = i; 239 port_mask &= ~ mask; 240 break; 241 } 242 } 243 244 for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){ 245 if (mask & port_mask){ 246 port_tx = i; 247 port_mask &= ~ mask; 248 break; 249 } 250 } 251 252 if (port_mask != 0) { 253 printf("invalid port mask (more than 2 ports)\n"); 254 print_usage(prgname); 255 return -1; 256 } 257 break; 258 259 default: 260 print_usage(prgname); 261 return -1; 262 } 263 } 264 265 if (optind <= 1) { 266 print_usage(prgname); 267 return -1; 268 } 269 270 argv[optind-1] = prgname; 271 272 optind = 1; /* reset getopt lib */ 273 return 0; 274 } 275 276 int 277 main(int argc, char **argv) 278 { 279 uint32_t lcore_id; 280 uint16_t nb_rxd = NIC_RX_QUEUE_DESC; 281 uint16_t nb_txd = NIC_TX_QUEUE_DESC; 282 struct rte_eth_conf conf; 283 struct rte_eth_rxconf rxq_conf; 284 struct rte_eth_txconf txq_conf; 285 struct rte_eth_dev_info dev_info; 286 int ret; 287 288 /* EAL init */ 289 ret = rte_eal_init(argc, argv); 290 if (ret < 0) 291 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n"); 292 argc -= ret; 293 argv += ret; 294 if (rte_lcore_count() != 1) { 295 rte_exit(EXIT_FAILURE, "This application does not accept more than one core. " 296 "Please adjust the \"-c COREMASK\" parameter accordingly.\n"); 297 } 298 299 /* Application non-EAL arguments parse */ 300 ret = parse_args(argc, argv); 301 if (ret < 0) 302 rte_exit(EXIT_FAILURE, "Invalid input arguments\n"); 303 304 /* Buffer pool init */ 305 pool = rte_pktmbuf_pool_create("pool", NB_MBUF, MEMPOOL_CACHE_SIZE, 306 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 307 if (pool == NULL) 308 rte_exit(EXIT_FAILURE, "Buffer pool creation error\n"); 309 310 /* NIC init */ 311 conf = port_conf; 312 rte_eth_dev_info_get(port_rx, &dev_info); 313 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE) 314 conf.txmode.offloads |= DEV_TX_OFFLOAD_MBUF_FAST_FREE; 315 ret = rte_eth_dev_configure(port_rx, 1, 1, &conf); 316 if (ret < 0) 317 rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_rx, ret); 318 319 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_rx, &nb_rxd, &nb_txd); 320 if (ret < 0) 321 rte_exit(EXIT_FAILURE, "Port %d adjust number of descriptors error (%d)\n", 322 port_rx, ret); 323 324 rxq_conf = dev_info.default_rxconf; 325 rxq_conf.offloads = conf.rxmode.offloads; 326 ret = rte_eth_rx_queue_setup(port_rx, NIC_RX_QUEUE, nb_rxd, 327 rte_eth_dev_socket_id(port_rx), 328 &rxq_conf, pool); 329 if (ret < 0) 330 rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_rx, ret); 331 332 txq_conf = dev_info.default_txconf; 333 txq_conf.txq_flags = ETH_TXQ_FLAGS_IGNORE; 334 txq_conf.offloads = conf.txmode.offloads; 335 ret = rte_eth_tx_queue_setup(port_rx, NIC_TX_QUEUE, nb_txd, 336 rte_eth_dev_socket_id(port_rx), 337 &txq_conf); 338 if (ret < 0) 339 rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_rx, ret); 340 341 conf = port_conf; 342 rte_eth_dev_info_get(port_tx, &dev_info); 343 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE) 344 conf.txmode.offloads |= DEV_TX_OFFLOAD_MBUF_FAST_FREE; 345 ret = rte_eth_dev_configure(port_tx, 1, 1, &conf); 346 if (ret < 0) 347 rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_tx, ret); 348 349 nb_rxd = NIC_RX_QUEUE_DESC; 350 nb_txd = NIC_TX_QUEUE_DESC; 351 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_tx, &nb_rxd, &nb_txd); 352 if (ret < 0) 353 rte_exit(EXIT_FAILURE, "Port %d adjust number of descriptors error (%d)\n", 354 port_tx, ret); 355 356 rxq_conf = dev_info.default_rxconf; 357 rxq_conf.offloads = conf.rxmode.offloads; 358 ret = rte_eth_rx_queue_setup(port_tx, NIC_RX_QUEUE, nb_rxd, 359 rte_eth_dev_socket_id(port_tx), 360 NULL, pool); 361 if (ret < 0) 362 rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_tx, ret); 363 364 txq_conf = dev_info.default_txconf; 365 txq_conf.txq_flags = ETH_TXQ_FLAGS_IGNORE; 366 txq_conf.offloads = conf.txmode.offloads; 367 ret = rte_eth_tx_queue_setup(port_tx, NIC_TX_QUEUE, nb_txd, 368 rte_eth_dev_socket_id(port_tx), 369 NULL); 370 if (ret < 0) 371 rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_tx, ret); 372 373 tx_buffer = rte_zmalloc_socket("tx_buffer", 374 RTE_ETH_TX_BUFFER_SIZE(PKT_TX_BURST_MAX), 0, 375 rte_eth_dev_socket_id(port_tx)); 376 if (tx_buffer == NULL) 377 rte_exit(EXIT_FAILURE, "Port %d TX buffer allocation error\n", 378 port_tx); 379 380 rte_eth_tx_buffer_init(tx_buffer, PKT_TX_BURST_MAX); 381 382 ret = rte_eth_dev_start(port_rx); 383 if (ret < 0) 384 rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_rx, ret); 385 386 ret = rte_eth_dev_start(port_tx); 387 if (ret < 0) 388 rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_tx, ret); 389 390 rte_eth_promiscuous_enable(port_rx); 391 392 rte_eth_promiscuous_enable(port_tx); 393 394 /* App configuration */ 395 ret = app_configure_flow_table(); 396 if (ret < 0) 397 rte_exit(EXIT_FAILURE, "Invalid configure flow table\n"); 398 399 /* Launch per-lcore init on every lcore */ 400 rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER); 401 RTE_LCORE_FOREACH_SLAVE(lcore_id) { 402 if (rte_eal_wait_lcore(lcore_id) < 0) 403 return -1; 404 } 405 406 return 0; 407 } 408