1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <stdio.h> 35 #include <getopt.h> 36 37 #include <rte_common.h> 38 #include <rte_eal.h> 39 #include <rte_mempool.h> 40 #include <rte_ethdev.h> 41 #include <rte_cycles.h> 42 #include <rte_mbuf.h> 43 #include <rte_meter.h> 44 45 /* 46 * Traffic metering configuration 47 * 48 */ 49 #define APP_MODE_FWD 0 50 #define APP_MODE_SRTCM_COLOR_BLIND 1 51 #define APP_MODE_SRTCM_COLOR_AWARE 2 52 #define APP_MODE_TRTCM_COLOR_BLIND 3 53 #define APP_MODE_TRTCM_COLOR_AWARE 4 54 55 #define APP_MODE APP_MODE_SRTCM_COLOR_BLIND 56 57 58 #include "main.h" 59 60 61 #define APP_PKT_FLOW_POS 33 62 #define APP_PKT_COLOR_POS 5 63 64 65 #if APP_PKT_FLOW_POS > 64 || APP_PKT_COLOR_POS > 64 66 #error Byte offset needs to be less than 64 67 #endif 68 69 /* 70 * Buffer pool configuration 71 * 72 ***/ 73 #define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM) 74 #define NB_MBUF 8192 75 #define MEMPOOL_CACHE_SIZE 256 76 77 static struct rte_mempool *pool = NULL; 78 79 /* 80 * NIC configuration 81 * 82 ***/ 83 static struct rte_eth_conf port_conf = { 84 .rxmode = { 85 .mq_mode = ETH_MQ_RX_RSS, 86 .max_rx_pkt_len = ETHER_MAX_LEN, 87 .split_hdr_size = 0, 88 .header_split = 0, 89 .hw_ip_checksum = 1, 90 .hw_vlan_filter = 0, 91 .jumbo_frame = 0, 92 .hw_strip_crc = 0, 93 }, 94 .rx_adv_conf = { 95 .rss_conf = { 96 .rss_key = NULL, 97 .rss_hf = ETH_RSS_IP, 98 }, 99 }, 100 .txmode = { 101 .mq_mode = ETH_DCB_NONE, 102 }, 103 }; 104 105 #define NIC_RX_QUEUE_DESC 128 106 #define NIC_TX_QUEUE_DESC 512 107 108 #define NIC_RX_QUEUE 0 109 #define NIC_TX_QUEUE 0 110 111 /* 112 * Packet RX/TX 113 * 114 ***/ 115 #define PKT_RX_BURST_MAX 32 116 #define PKT_TX_BURST_MAX 32 117 #define TIME_TX_DRAIN 200000ULL 118 119 static uint8_t port_rx; 120 static uint8_t port_tx; 121 static struct rte_mbuf *pkts_rx[PKT_RX_BURST_MAX]; 122 static struct rte_mbuf *pkts_tx[PKT_TX_BURST_MAX]; 123 static uint16_t pkts_tx_len = 0; 124 125 126 struct rte_meter_srtcm_params app_srtcm_params[] = { 127 {.cir = 1000000 * 46, .cbs = 2048, .ebs = 2048}, 128 }; 129 130 struct rte_meter_trtcm_params app_trtcm_params[] = { 131 {.cir = 1000000 * 46, .pir = 1500000 * 46, .cbs = 2048, .pbs = 2048}, 132 }; 133 134 #define APP_FLOWS_MAX 256 135 136 FLOW_METER app_flows[APP_FLOWS_MAX]; 137 138 static void 139 app_configure_flow_table(void) 140 { 141 uint32_t i, j; 142 143 for (i = 0, j = 0; i < APP_FLOWS_MAX; i ++, j = (j + 1) % RTE_DIM(PARAMS)){ 144 FUNC_CONFIG(&app_flows[i], &PARAMS[j]); 145 } 146 } 147 148 static inline void 149 app_set_pkt_color(uint8_t *pkt_data, enum policer_action color) 150 { 151 pkt_data[APP_PKT_COLOR_POS] = (uint8_t)color; 152 } 153 154 static inline int 155 app_pkt_handle(struct rte_mbuf *pkt, uint64_t time) 156 { 157 uint8_t input_color, output_color; 158 uint8_t *pkt_data = rte_pktmbuf_mtod(pkt, uint8_t *); 159 uint32_t pkt_len = rte_pktmbuf_pkt_len(pkt) - sizeof(struct ether_hdr); 160 uint8_t flow_id = (uint8_t)(pkt_data[APP_PKT_FLOW_POS] & (APP_FLOWS_MAX - 1)); 161 input_color = pkt_data[APP_PKT_COLOR_POS]; 162 enum policer_action action; 163 164 /* color input is not used for blind modes */ 165 output_color = (uint8_t) FUNC_METER(&app_flows[flow_id], time, pkt_len, 166 (enum rte_meter_color) input_color); 167 168 /* Apply policing and set the output color */ 169 action = policer_table[input_color][output_color]; 170 app_set_pkt_color(pkt_data, action); 171 172 return action; 173 } 174 175 176 static __attribute__((noreturn)) int 177 main_loop(__attribute__((unused)) void *dummy) 178 { 179 uint64_t current_time, last_time = rte_rdtsc(); 180 uint32_t lcore_id = rte_lcore_id(); 181 182 printf("Core %u: port RX = %d, port TX = %d\n", lcore_id, port_rx, port_tx); 183 184 while (1) { 185 uint64_t time_diff; 186 int i, nb_rx; 187 188 /* Mechanism to avoid stale packets in the output buffer */ 189 current_time = rte_rdtsc(); 190 time_diff = current_time - last_time; 191 if (unlikely(time_diff > TIME_TX_DRAIN)) { 192 int ret; 193 194 if (pkts_tx_len == 0) { 195 last_time = current_time; 196 197 continue; 198 } 199 200 /* Write packet burst to NIC TX */ 201 ret = rte_eth_tx_burst(port_tx, NIC_TX_QUEUE, pkts_tx, pkts_tx_len); 202 203 /* Free buffers for any packets not written successfully */ 204 if (unlikely(ret < pkts_tx_len)) { 205 for ( ; ret < pkts_tx_len; ret ++) { 206 rte_pktmbuf_free(pkts_tx[ret]); 207 } 208 } 209 210 /* Empty the output buffer */ 211 pkts_tx_len = 0; 212 213 last_time = current_time; 214 } 215 216 /* Read packet burst from NIC RX */ 217 nb_rx = rte_eth_rx_burst(port_rx, NIC_RX_QUEUE, pkts_rx, PKT_RX_BURST_MAX); 218 219 /* Handle packets */ 220 for (i = 0; i < nb_rx; i ++) { 221 struct rte_mbuf *pkt = pkts_rx[i]; 222 223 /* Handle current packet */ 224 if (app_pkt_handle(pkt, current_time) == DROP) 225 rte_pktmbuf_free(pkt); 226 else { 227 pkts_tx[pkts_tx_len] = pkt; 228 pkts_tx_len ++; 229 } 230 231 /* Write packets from output buffer to NIC TX when full burst is available */ 232 if (unlikely(pkts_tx_len == PKT_TX_BURST_MAX)) { 233 /* Write packet burst to NIC TX */ 234 int ret = rte_eth_tx_burst(port_tx, NIC_TX_QUEUE, pkts_tx, PKT_TX_BURST_MAX); 235 236 /* Free buffers for any packets not written successfully */ 237 if (unlikely(ret < PKT_TX_BURST_MAX)) { 238 for ( ; ret < PKT_TX_BURST_MAX; ret ++) { 239 rte_pktmbuf_free(pkts_tx[ret]); 240 } 241 } 242 243 /* Empty the output buffer */ 244 pkts_tx_len = 0; 245 } 246 } 247 } 248 } 249 250 static void 251 print_usage(const char *prgname) 252 { 253 printf ("%s [EAL options] -- -p PORTMASK\n" 254 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 255 prgname); 256 } 257 258 static int 259 parse_portmask(const char *portmask) 260 { 261 char *end = NULL; 262 unsigned long pm; 263 264 /* parse hexadecimal string */ 265 pm = strtoul(portmask, &end, 16); 266 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 267 return -1; 268 269 if (pm == 0) 270 return -1; 271 272 return pm; 273 } 274 275 /* Parse the argument given in the command line of the application */ 276 static int 277 parse_args(int argc, char **argv) 278 { 279 int opt; 280 char **argvopt; 281 int option_index; 282 char *prgname = argv[0]; 283 static struct option lgopts[] = { 284 {NULL, 0, 0, 0} 285 }; 286 uint64_t port_mask, i, mask; 287 288 argvopt = argv; 289 290 while ((opt = getopt_long(argc, argvopt, "p:", lgopts, &option_index)) != EOF) { 291 switch (opt) { 292 case 'p': 293 port_mask = parse_portmask(optarg); 294 if (port_mask == 0) { 295 printf("invalid port mask (null port mask)\n"); 296 print_usage(prgname); 297 return -1; 298 } 299 300 for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){ 301 if (mask & port_mask){ 302 port_rx = i; 303 port_mask &= ~ mask; 304 break; 305 } 306 } 307 308 for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){ 309 if (mask & port_mask){ 310 port_tx = i; 311 port_mask &= ~ mask; 312 break; 313 } 314 } 315 316 if (port_mask != 0) { 317 printf("invalid port mask (more than 2 ports)\n"); 318 print_usage(prgname); 319 return -1; 320 } 321 break; 322 323 default: 324 print_usage(prgname); 325 return -1; 326 } 327 } 328 329 if (optind <= 1) { 330 print_usage(prgname); 331 return -1; 332 } 333 334 argv[optind-1] = prgname; 335 336 optind = 0; /* reset getopt lib */ 337 return 0; 338 } 339 340 int 341 main(int argc, char **argv) 342 { 343 uint32_t lcore_id; 344 int ret; 345 346 /* EAL init */ 347 ret = rte_eal_init(argc, argv); 348 if (ret < 0) 349 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n"); 350 argc -= ret; 351 argv += ret; 352 if (rte_lcore_count() != 1) { 353 rte_exit(EXIT_FAILURE, "This application does not accept more than one core. " 354 "Please adjust the \"-c COREMASK\" parameter accordingly.\n"); 355 } 356 357 /* Application non-EAL arguments parse */ 358 ret = parse_args(argc, argv); 359 if (ret < 0) 360 rte_exit(EXIT_FAILURE, "Invalid input arguments\n"); 361 362 /* Buffer pool init */ 363 pool = rte_mempool_create("pool", NB_MBUF, MBUF_SIZE, MEMPOOL_CACHE_SIZE, 364 sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init, NULL, 365 rte_pktmbuf_init, NULL, rte_socket_id(), 0); 366 if (pool == NULL) 367 rte_exit(EXIT_FAILURE, "Buffer pool creation error\n"); 368 369 /* NIC init */ 370 ret = rte_eth_dev_configure(port_rx, 1, 1, &port_conf); 371 if (ret < 0) 372 rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_rx, ret); 373 374 ret = rte_eth_rx_queue_setup(port_rx, NIC_RX_QUEUE, NIC_RX_QUEUE_DESC, 375 rte_eth_dev_socket_id(port_rx), 376 NULL, pool); 377 if (ret < 0) 378 rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_rx, ret); 379 380 ret = rte_eth_tx_queue_setup(port_rx, NIC_TX_QUEUE, NIC_TX_QUEUE_DESC, 381 rte_eth_dev_socket_id(port_rx), 382 NULL); 383 if (ret < 0) 384 rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_rx, ret); 385 386 ret = rte_eth_dev_configure(port_tx, 1, 1, &port_conf); 387 if (ret < 0) 388 rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_tx, ret); 389 390 ret = rte_eth_rx_queue_setup(port_tx, NIC_RX_QUEUE, NIC_RX_QUEUE_DESC, 391 rte_eth_dev_socket_id(port_tx), 392 NULL, pool); 393 if (ret < 0) 394 rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_tx, ret); 395 396 ret = rte_eth_tx_queue_setup(port_tx, NIC_TX_QUEUE, NIC_TX_QUEUE_DESC, 397 rte_eth_dev_socket_id(port_tx), 398 NULL); 399 if (ret < 0) 400 rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_tx, ret); 401 402 ret = rte_eth_dev_start(port_rx); 403 if (ret < 0) 404 rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_rx, ret); 405 406 ret = rte_eth_dev_start(port_tx); 407 if (ret < 0) 408 rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_tx, ret); 409 410 rte_eth_promiscuous_enable(port_rx); 411 412 rte_eth_promiscuous_enable(port_tx); 413 414 /* App configuration */ 415 app_configure_flow_table(); 416 417 /* Launch per-lcore init on every lcore */ 418 rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER); 419 RTE_LCORE_FOREACH_SLAVE(lcore_id) { 420 if (rte_eal_wait_lcore(lcore_id) < 0) 421 return -1; 422 } 423 424 return 0; 425 } 426