1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2010-2013 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 .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_IPV4 | ETH_RSS_IPV6, 97 }, 98 }, 99 .txmode = { 100 .mq_mode = ETH_DCB_NONE, 101 }, 102 }; 103 104 static const struct rte_eth_rxconf rx_conf = { 105 .rx_thresh = { 106 .pthresh = 8, /* RX prefetch threshold reg */ 107 .hthresh = 8, /* RX host threshold reg */ 108 .wthresh = 4, /* RX write-back threshold reg */ 109 }, 110 .rx_free_thresh = 32, 111 }; 112 113 static const struct rte_eth_txconf tx_conf = { 114 .tx_thresh = { 115 .pthresh = 36, /* TX prefetch threshold reg */ 116 .hthresh = 0, /* TX host threshold reg */ 117 .wthresh = 0, /* TX write-back threshold reg */ 118 }, 119 .tx_free_thresh = 0, 120 .tx_rs_thresh = 0, 121 .txq_flags = 0x0, 122 }; 123 124 #define NIC_RX_QUEUE_DESC 128 125 #define NIC_TX_QUEUE_DESC 512 126 127 #define NIC_RX_QUEUE 0 128 #define NIC_TX_QUEUE 0 129 130 /* 131 * Packet RX/TX 132 * 133 ***/ 134 #define PKT_RX_BURST_MAX 32 135 #define PKT_TX_BURST_MAX 32 136 #define TIME_TX_DRAIN 200000ULL 137 138 static uint8_t port_rx; 139 static uint8_t port_tx; 140 static struct rte_mbuf *pkts_rx[PKT_RX_BURST_MAX]; 141 static struct rte_mbuf *pkts_tx[PKT_TX_BURST_MAX]; 142 static uint16_t pkts_tx_len = 0; 143 144 145 struct rte_meter_srtcm_params app_srtcm_params[] = { 146 {.cir = 1000000 * 46, .cbs = 2048, .ebs = 2048}, 147 }; 148 149 struct rte_meter_trtcm_params app_trtcm_params[] = { 150 {.cir = 1000000 * 46, .pir = 1500000 * 46, .cbs = 2048, .pbs = 2048}, 151 }; 152 153 #define DIM(a) (sizeof (a) / sizeof ((a)[0])) 154 #define APP_FLOWS_MAX 256 155 156 FLOW_METER app_flows[APP_FLOWS_MAX]; 157 158 static void 159 app_configure_flow_table(void) 160 { 161 uint32_t i, j; 162 163 for (i = 0, j = 0; i < APP_FLOWS_MAX; i ++, j = (j + 1) % DIM(PARAMS)){ 164 FUNC_CONFIG(&app_flows[i], &PARAMS[j]); 165 } 166 } 167 168 static inline void 169 app_pkt_handle(struct rte_mbuf *pkt, uint64_t time) 170 { 171 uint8_t color; 172 173 uint8_t *pkt_data = rte_pktmbuf_mtod(pkt, uint8_t *); 174 uint32_t pkt_len = rte_pktmbuf_pkt_len(pkt) - sizeof(struct ether_hdr); 175 uint8_t flow_id = (uint8_t)(pkt_data[APP_PKT_FLOW_POS] & (APP_FLOWS_MAX - 1)); 176 color = pkt_data[APP_PKT_COLOR_POS]; 177 178 /* color input is not used for blind modes */ 179 color = (uint8_t) FUNC_METER(&app_flows[flow_id], time, pkt_len, 180 (enum rte_meter_color) color); 181 pkt_data[APP_PKT_COLOR_POS] = color; 182 } 183 184 185 static __attribute__((noreturn)) int 186 main_loop(__attribute__((unused)) void *dummy) 187 { 188 uint64_t current_time, last_time = rte_rdtsc(); 189 uint32_t lcore_id = rte_lcore_id(); 190 191 printf("Core %u: port RX = %d, port TX = %d\n", lcore_id, port_rx, port_tx); 192 193 while (1) { 194 uint64_t time_diff; 195 int i, nb_rx; 196 197 /* Mechanism to avoid stale packets in the output buffer */ 198 current_time = rte_rdtsc(); 199 time_diff = current_time - last_time; 200 if (unlikely(time_diff > TIME_TX_DRAIN)) { 201 int ret; 202 203 if (pkts_tx_len == 0) { 204 last_time = current_time; 205 206 continue; 207 } 208 209 /* Write packet burst to NIC TX */ 210 ret = rte_eth_tx_burst(port_tx, NIC_TX_QUEUE, pkts_tx, pkts_tx_len); 211 212 /* Free buffers for any packets not written successfully */ 213 if (unlikely(ret < pkts_tx_len)) { 214 for ( ; ret < pkts_tx_len; ret ++) { 215 rte_pktmbuf_free(pkts_tx[ret]); 216 } 217 } 218 219 /* Empty the output buffer */ 220 pkts_tx_len = 0; 221 222 last_time = current_time; 223 } 224 225 /* Read packet burst from NIC RX */ 226 nb_rx = rte_eth_rx_burst(port_rx, NIC_RX_QUEUE, pkts_rx, PKT_RX_BURST_MAX); 227 228 /* Handle packets */ 229 for (i = 0; i < nb_rx; i ++) { 230 struct rte_mbuf *pkt = pkts_rx[i]; 231 232 /* Handle current packet*/ 233 app_pkt_handle(pkt, current_time); 234 235 /* Write current packet in the output buffer */ 236 pkts_tx[pkts_tx_len] = pkt; 237 pkts_tx_len ++; 238 239 /* Write packets from output buffer to NIC TX when full burst is available */ 240 if (unlikely(pkts_tx_len == PKT_TX_BURST_MAX)) { 241 /* Write packet burst to NIC TX */ 242 int ret = rte_eth_tx_burst(port_tx, NIC_TX_QUEUE, pkts_tx, PKT_TX_BURST_MAX); 243 244 /* Free buffers for any packets not written successfully */ 245 if (unlikely(ret < PKT_TX_BURST_MAX)) { 246 for ( ; ret < PKT_TX_BURST_MAX; ret ++) { 247 rte_pktmbuf_free(pkts_tx[ret]); 248 } 249 } 250 251 /* Empty the output buffer */ 252 pkts_tx_len = 0; 253 } 254 } 255 } 256 } 257 258 static void 259 print_usage(const char *prgname) 260 { 261 printf ("%s [EAL options] -- -p PORTMASK\n" 262 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 263 prgname); 264 } 265 266 static int 267 parse_portmask(const char *portmask) 268 { 269 char *end = NULL; 270 unsigned long pm; 271 272 /* parse hexadecimal string */ 273 pm = strtoul(portmask, &end, 16); 274 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 275 return -1; 276 277 if (pm == 0) 278 return -1; 279 280 return pm; 281 } 282 283 /* Parse the argument given in the command line of the application */ 284 static int 285 parse_args(int argc, char **argv) 286 { 287 int opt; 288 char **argvopt; 289 int option_index; 290 char *prgname = argv[0]; 291 static struct option lgopts[] = { 292 {NULL, 0, 0, 0} 293 }; 294 uint64_t port_mask, i, mask; 295 296 argvopt = argv; 297 298 while ((opt = getopt_long(argc, argvopt, "p:", lgopts, &option_index)) != EOF) { 299 switch (opt) { 300 case 'p': 301 port_mask = parse_portmask(optarg); 302 if (port_mask == 0) { 303 printf("invalid port mask (null port mask)\n"); 304 print_usage(prgname); 305 return -1; 306 } 307 308 for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){ 309 if (mask & port_mask){ 310 port_rx = i; 311 port_mask &= ~ mask; 312 break; 313 } 314 } 315 316 for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){ 317 if (mask & port_mask){ 318 port_tx = i; 319 port_mask &= ~ mask; 320 break; 321 } 322 } 323 324 if (port_mask != 0) { 325 printf("invalid port mask (more than 2 ports)\n"); 326 print_usage(prgname); 327 return -1; 328 } 329 break; 330 331 default: 332 print_usage(prgname); 333 return -1; 334 } 335 } 336 337 if (optind <= 1) { 338 print_usage(prgname); 339 return -1; 340 } 341 342 argv[optind-1] = prgname; 343 344 optind = 0; /* reset getopt lib */ 345 return 0; 346 } 347 348 int 349 MAIN(int argc, char **argv) 350 { 351 uint32_t lcore_id; 352 int ret; 353 354 /* EAL init */ 355 ret = rte_eal_init(argc, argv); 356 if (ret < 0) 357 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n"); 358 argc -= ret; 359 argv += ret; 360 if (rte_lcore_count() != 1) { 361 rte_exit(EXIT_FAILURE, "This application does not accept more than one core. " 362 "Please adjust the \"-c COREMASK\" parameter accordingly.\n"); 363 } 364 365 /* Application non-EAL arguments parse */ 366 ret = parse_args(argc, argv); 367 if (ret < 0) 368 rte_exit(EXIT_FAILURE, "Invalid input arguments\n"); 369 370 /* Buffer pool init */ 371 pool = rte_mempool_create("pool", NB_MBUF, MBUF_SIZE, MEMPOOL_CACHE_SIZE, 372 sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init, NULL, 373 rte_pktmbuf_init, NULL, rte_socket_id(), 0); 374 if (pool == NULL) 375 rte_exit(EXIT_FAILURE, "Buffer pool creation error\n"); 376 377 /* PMD init */ 378 if (rte_pmd_init_all() < 0) 379 rte_exit(EXIT_FAILURE, "PMD init error\n"); 380 381 if (rte_eal_pci_probe() < 0) 382 rte_exit(EXIT_FAILURE, "PCI probe error\n"); 383 384 /* NIC init */ 385 ret = rte_eth_dev_configure(port_rx, 1, 1, &port_conf); 386 if (ret < 0) 387 rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_rx, ret); 388 389 ret = rte_eth_rx_queue_setup(port_rx, NIC_RX_QUEUE, NIC_RX_QUEUE_DESC, rte_eth_dev_socket_id(port_rx), &rx_conf, pool); 390 if (ret < 0) 391 rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_rx, ret); 392 393 ret = rte_eth_tx_queue_setup(port_rx, NIC_TX_QUEUE, NIC_TX_QUEUE_DESC, rte_eth_dev_socket_id(port_rx), &tx_conf); 394 if (ret < 0) 395 rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_rx, ret); 396 397 ret = rte_eth_dev_configure(port_tx, 1, 1, &port_conf); 398 if (ret < 0) 399 rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_tx, ret); 400 401 ret = rte_eth_rx_queue_setup(port_tx, NIC_RX_QUEUE, NIC_RX_QUEUE_DESC, rte_eth_dev_socket_id(port_tx), &rx_conf, pool); 402 if (ret < 0) 403 rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_tx, ret); 404 405 ret = rte_eth_tx_queue_setup(port_tx, NIC_TX_QUEUE, NIC_TX_QUEUE_DESC, rte_eth_dev_socket_id(port_tx), &tx_conf); 406 if (ret < 0) 407 rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_tx, ret); 408 409 ret = rte_eth_dev_start(port_rx); 410 if (ret < 0) 411 rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_rx, ret); 412 413 ret = rte_eth_dev_start(port_tx); 414 if (ret < 0) 415 rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_tx, ret); 416 417 rte_eth_promiscuous_enable(port_rx); 418 419 rte_eth_promiscuous_enable(port_tx); 420 421 /* App configuration */ 422 app_configure_flow_table(); 423 424 /* Launch per-lcore init on every lcore */ 425 rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER); 426 RTE_LCORE_FOREACH_SLAVE(lcore_id) { 427 if (rte_eal_wait_lcore(lcore_id) < 0) 428 return -1; 429 } 430 431 return 0; 432 } 433