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 NB_MBUF 8192 74 #define MEMPOOL_CACHE_SIZE 256 75 76 static struct rte_mempool *pool = NULL; 77 78 /* 79 * NIC configuration 80 * 81 ***/ 82 static struct rte_eth_conf port_conf = { 83 .rxmode = { 84 .mq_mode = ETH_MQ_RX_RSS, 85 .max_rx_pkt_len = ETHER_MAX_LEN, 86 .split_hdr_size = 0, 87 .header_split = 0, 88 .hw_ip_checksum = 1, 89 .hw_vlan_filter = 0, 90 .jumbo_frame = 0, 91 .hw_strip_crc = 0, 92 }, 93 .rx_adv_conf = { 94 .rss_conf = { 95 .rss_key = NULL, 96 .rss_hf = ETH_RSS_IP, 97 }, 98 }, 99 .txmode = { 100 .mq_mode = ETH_DCB_NONE, 101 }, 102 }; 103 104 #define NIC_RX_QUEUE_DESC 128 105 #define NIC_TX_QUEUE_DESC 512 106 107 #define NIC_RX_QUEUE 0 108 #define NIC_TX_QUEUE 0 109 110 /* 111 * Packet RX/TX 112 * 113 ***/ 114 #define PKT_RX_BURST_MAX 32 115 #define PKT_TX_BURST_MAX 32 116 #define TIME_TX_DRAIN 200000ULL 117 118 static uint8_t port_rx; 119 static uint8_t port_tx; 120 static struct rte_mbuf *pkts_rx[PKT_RX_BURST_MAX]; 121 static struct rte_mbuf *pkts_tx[PKT_TX_BURST_MAX]; 122 static uint16_t pkts_tx_len = 0; 123 124 125 struct rte_meter_srtcm_params app_srtcm_params[] = { 126 {.cir = 1000000 * 46, .cbs = 2048, .ebs = 2048}, 127 }; 128 129 struct rte_meter_trtcm_params app_trtcm_params[] = { 130 {.cir = 1000000 * 46, .pir = 1500000 * 46, .cbs = 2048, .pbs = 2048}, 131 }; 132 133 #define APP_FLOWS_MAX 256 134 135 FLOW_METER app_flows[APP_FLOWS_MAX]; 136 137 static void 138 app_configure_flow_table(void) 139 { 140 uint32_t i, j; 141 142 for (i = 0, j = 0; i < APP_FLOWS_MAX; i ++, j = (j + 1) % RTE_DIM(PARAMS)){ 143 FUNC_CONFIG(&app_flows[i], &PARAMS[j]); 144 } 145 } 146 147 static inline void 148 app_set_pkt_color(uint8_t *pkt_data, enum policer_action color) 149 { 150 pkt_data[APP_PKT_COLOR_POS] = (uint8_t)color; 151 } 152 153 static inline int 154 app_pkt_handle(struct rte_mbuf *pkt, uint64_t time) 155 { 156 uint8_t input_color, output_color; 157 uint8_t *pkt_data = rte_pktmbuf_mtod(pkt, uint8_t *); 158 uint32_t pkt_len = rte_pktmbuf_pkt_len(pkt) - sizeof(struct ether_hdr); 159 uint8_t flow_id = (uint8_t)(pkt_data[APP_PKT_FLOW_POS] & (APP_FLOWS_MAX - 1)); 160 input_color = pkt_data[APP_PKT_COLOR_POS]; 161 enum policer_action action; 162 163 /* color input is not used for blind modes */ 164 output_color = (uint8_t) FUNC_METER(&app_flows[flow_id], time, pkt_len, 165 (enum rte_meter_color) input_color); 166 167 /* Apply policing and set the output color */ 168 action = policer_table[input_color][output_color]; 169 app_set_pkt_color(pkt_data, action); 170 171 return action; 172 } 173 174 175 static __attribute__((noreturn)) int 176 main_loop(__attribute__((unused)) void *dummy) 177 { 178 uint64_t current_time, last_time = rte_rdtsc(); 179 uint32_t lcore_id = rte_lcore_id(); 180 181 printf("Core %u: port RX = %d, port TX = %d\n", lcore_id, port_rx, port_tx); 182 183 while (1) { 184 uint64_t time_diff; 185 int i, nb_rx; 186 187 /* Mechanism to avoid stale packets in the output buffer */ 188 current_time = rte_rdtsc(); 189 time_diff = current_time - last_time; 190 if (unlikely(time_diff > TIME_TX_DRAIN)) { 191 int ret; 192 193 if (pkts_tx_len == 0) { 194 last_time = current_time; 195 196 continue; 197 } 198 199 /* Write packet burst to NIC TX */ 200 ret = rte_eth_tx_burst(port_tx, NIC_TX_QUEUE, pkts_tx, pkts_tx_len); 201 202 /* Free buffers for any packets not written successfully */ 203 if (unlikely(ret < pkts_tx_len)) { 204 for ( ; ret < pkts_tx_len; ret ++) { 205 rte_pktmbuf_free(pkts_tx[ret]); 206 } 207 } 208 209 /* Empty the output buffer */ 210 pkts_tx_len = 0; 211 212 last_time = current_time; 213 } 214 215 /* Read packet burst from NIC RX */ 216 nb_rx = rte_eth_rx_burst(port_rx, NIC_RX_QUEUE, pkts_rx, PKT_RX_BURST_MAX); 217 218 /* Handle packets */ 219 for (i = 0; i < nb_rx; i ++) { 220 struct rte_mbuf *pkt = pkts_rx[i]; 221 222 /* Handle current packet */ 223 if (app_pkt_handle(pkt, current_time) == DROP) 224 rte_pktmbuf_free(pkt); 225 else { 226 pkts_tx[pkts_tx_len] = pkt; 227 pkts_tx_len ++; 228 } 229 230 /* Write packets from output buffer to NIC TX when full burst is available */ 231 if (unlikely(pkts_tx_len == PKT_TX_BURST_MAX)) { 232 /* Write packet burst to NIC TX */ 233 int ret = rte_eth_tx_burst(port_tx, NIC_TX_QUEUE, pkts_tx, PKT_TX_BURST_MAX); 234 235 /* Free buffers for any packets not written successfully */ 236 if (unlikely(ret < PKT_TX_BURST_MAX)) { 237 for ( ; ret < PKT_TX_BURST_MAX; ret ++) { 238 rte_pktmbuf_free(pkts_tx[ret]); 239 } 240 } 241 242 /* Empty the output buffer */ 243 pkts_tx_len = 0; 244 } 245 } 246 } 247 } 248 249 static void 250 print_usage(const char *prgname) 251 { 252 printf ("%s [EAL options] -- -p PORTMASK\n" 253 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 254 prgname); 255 } 256 257 static int 258 parse_portmask(const char *portmask) 259 { 260 char *end = NULL; 261 unsigned long pm; 262 263 /* parse hexadecimal string */ 264 pm = strtoul(portmask, &end, 16); 265 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 266 return -1; 267 268 if (pm == 0) 269 return -1; 270 271 return pm; 272 } 273 274 /* Parse the argument given in the command line of the application */ 275 static int 276 parse_args(int argc, char **argv) 277 { 278 int opt; 279 char **argvopt; 280 int option_index; 281 char *prgname = argv[0]; 282 static struct option lgopts[] = { 283 {NULL, 0, 0, 0} 284 }; 285 uint64_t port_mask, i, mask; 286 287 argvopt = argv; 288 289 while ((opt = getopt_long(argc, argvopt, "p:", lgopts, &option_index)) != EOF) { 290 switch (opt) { 291 case 'p': 292 port_mask = parse_portmask(optarg); 293 if (port_mask == 0) { 294 printf("invalid port mask (null port mask)\n"); 295 print_usage(prgname); 296 return -1; 297 } 298 299 for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){ 300 if (mask & port_mask){ 301 port_rx = i; 302 port_mask &= ~ mask; 303 break; 304 } 305 } 306 307 for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){ 308 if (mask & port_mask){ 309 port_tx = i; 310 port_mask &= ~ mask; 311 break; 312 } 313 } 314 315 if (port_mask != 0) { 316 printf("invalid port mask (more than 2 ports)\n"); 317 print_usage(prgname); 318 return -1; 319 } 320 break; 321 322 default: 323 print_usage(prgname); 324 return -1; 325 } 326 } 327 328 if (optind <= 1) { 329 print_usage(prgname); 330 return -1; 331 } 332 333 argv[optind-1] = prgname; 334 335 optind = 0; /* reset getopt lib */ 336 return 0; 337 } 338 339 int 340 main(int argc, char **argv) 341 { 342 uint32_t lcore_id; 343 int ret; 344 345 /* EAL init */ 346 ret = rte_eal_init(argc, argv); 347 if (ret < 0) 348 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n"); 349 argc -= ret; 350 argv += ret; 351 if (rte_lcore_count() != 1) { 352 rte_exit(EXIT_FAILURE, "This application does not accept more than one core. " 353 "Please adjust the \"-c COREMASK\" parameter accordingly.\n"); 354 } 355 356 /* Application non-EAL arguments parse */ 357 ret = parse_args(argc, argv); 358 if (ret < 0) 359 rte_exit(EXIT_FAILURE, "Invalid input arguments\n"); 360 361 /* Buffer pool init */ 362 pool = rte_pktmbuf_pool_create("pool", NB_MBUF, MEMPOOL_CACHE_SIZE, 363 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 364 if (pool == NULL) 365 rte_exit(EXIT_FAILURE, "Buffer pool creation error\n"); 366 367 /* NIC init */ 368 ret = rte_eth_dev_configure(port_rx, 1, 1, &port_conf); 369 if (ret < 0) 370 rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_rx, ret); 371 372 ret = rte_eth_rx_queue_setup(port_rx, NIC_RX_QUEUE, NIC_RX_QUEUE_DESC, 373 rte_eth_dev_socket_id(port_rx), 374 NULL, pool); 375 if (ret < 0) 376 rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_rx, ret); 377 378 ret = rte_eth_tx_queue_setup(port_rx, NIC_TX_QUEUE, NIC_TX_QUEUE_DESC, 379 rte_eth_dev_socket_id(port_rx), 380 NULL); 381 if (ret < 0) 382 rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_rx, ret); 383 384 ret = rte_eth_dev_configure(port_tx, 1, 1, &port_conf); 385 if (ret < 0) 386 rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_tx, ret); 387 388 ret = rte_eth_rx_queue_setup(port_tx, NIC_RX_QUEUE, NIC_RX_QUEUE_DESC, 389 rte_eth_dev_socket_id(port_tx), 390 NULL, pool); 391 if (ret < 0) 392 rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_tx, ret); 393 394 ret = rte_eth_tx_queue_setup(port_tx, NIC_TX_QUEUE, NIC_TX_QUEUE_DESC, 395 rte_eth_dev_socket_id(port_tx), 396 NULL); 397 if (ret < 0) 398 rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_tx, ret); 399 400 ret = rte_eth_dev_start(port_rx); 401 if (ret < 0) 402 rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_rx, ret); 403 404 ret = rte_eth_dev_start(port_tx); 405 if (ret < 0) 406 rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_tx, ret); 407 408 rte_eth_promiscuous_enable(port_rx); 409 410 rte_eth_promiscuous_enable(port_tx); 411 412 /* App configuration */ 413 app_configure_flow_table(); 414 415 /* Launch per-lcore init on every lcore */ 416 rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER); 417 RTE_LCORE_FOREACH_SLAVE(lcore_id) { 418 if (rte_eal_wait_lcore(lcore_id) < 0) 419 return -1; 420 } 421 422 return 0; 423 } 424