1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2014 Intel Corporation 3 */ 4 5 #include <stdio.h> 6 #include <stdlib.h> 7 #include <stdint.h> 8 #include <inttypes.h> 9 #include <string.h> 10 #include <sys/queue.h> 11 #include <stdarg.h> 12 #include <errno.h> 13 #include <getopt.h> 14 15 #include <netinet/in.h> 16 #include <linux/if.h> 17 #include <linux/if_tun.h> 18 #include <fcntl.h> 19 #include <sys/ioctl.h> 20 #include <unistd.h> 21 #include <signal.h> 22 23 #include <rte_common.h> 24 #include <rte_log.h> 25 #include <rte_memory.h> 26 #include <rte_memcpy.h> 27 #include <rte_eal.h> 28 #include <rte_per_lcore.h> 29 #include <rte_launch.h> 30 #include <rte_atomic.h> 31 #include <rte_lcore.h> 32 #include <rte_branch_prediction.h> 33 #include <rte_interrupts.h> 34 #include <rte_bus_pci.h> 35 #include <rte_debug.h> 36 #include <rte_ether.h> 37 #include <rte_ethdev.h> 38 #include <rte_mempool.h> 39 #include <rte_mbuf.h> 40 #include <rte_string_fns.h> 41 #include <rte_cycles.h> 42 #include <rte_malloc.h> 43 #include <rte_kni.h> 44 45 /* Macros for printing using RTE_LOG */ 46 #define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1 47 48 /* Max size of a single packet */ 49 #define MAX_PACKET_SZ 2048 50 51 /* Size of the data buffer in each mbuf */ 52 #define MBUF_DATA_SZ (MAX_PACKET_SZ + RTE_PKTMBUF_HEADROOM) 53 54 /* Number of mbufs in mempool that is created */ 55 #define NB_MBUF (8192 * 16) 56 57 /* How many packets to attempt to read from NIC in one go */ 58 #define PKT_BURST_SZ 32 59 60 /* How many objects (mbufs) to keep in per-lcore mempool cache */ 61 #define MEMPOOL_CACHE_SZ PKT_BURST_SZ 62 63 /* Number of RX ring descriptors */ 64 #define NB_RXD 1024 65 66 /* Number of TX ring descriptors */ 67 #define NB_TXD 1024 68 69 /* Total octets in ethernet header */ 70 #define KNI_ENET_HEADER_SIZE 14 71 72 /* Total octets in the FCS */ 73 #define KNI_ENET_FCS_SIZE 4 74 75 #define KNI_US_PER_SECOND 1000000 76 #define KNI_SECOND_PER_DAY 86400 77 78 #define KNI_MAX_KTHREAD 32 79 /* 80 * Structure of port parameters 81 */ 82 struct kni_port_params { 83 uint16_t port_id;/* Port ID */ 84 unsigned lcore_rx; /* lcore ID for RX */ 85 unsigned lcore_tx; /* lcore ID for TX */ 86 uint32_t nb_lcore_k; /* Number of lcores for KNI multi kernel threads */ 87 uint32_t nb_kni; /* Number of KNI devices to be created */ 88 unsigned lcore_k[KNI_MAX_KTHREAD]; /* lcore ID list for kthreads */ 89 struct rte_kni *kni[KNI_MAX_KTHREAD]; /* KNI context pointers */ 90 } __rte_cache_aligned; 91 92 static struct kni_port_params *kni_port_params_array[RTE_MAX_ETHPORTS]; 93 94 95 /* Options for configuring ethernet port */ 96 static struct rte_eth_conf port_conf = { 97 .txmode = { 98 .mq_mode = ETH_MQ_TX_NONE, 99 }, 100 }; 101 102 /* Mempool for mbufs */ 103 static struct rte_mempool * pktmbuf_pool = NULL; 104 105 /* Mask of enabled ports */ 106 static uint32_t ports_mask = 0; 107 /* Ports set in promiscuous mode off by default. */ 108 static int promiscuous_on = 0; 109 /* Monitor link status continually. off by default. */ 110 static int monitor_links; 111 112 /* Structure type for recording kni interface specific stats */ 113 struct kni_interface_stats { 114 /* number of pkts received from NIC, and sent to KNI */ 115 uint64_t rx_packets; 116 117 /* number of pkts received from NIC, but failed to send to KNI */ 118 uint64_t rx_dropped; 119 120 /* number of pkts received from KNI, and sent to NIC */ 121 uint64_t tx_packets; 122 123 /* number of pkts received from KNI, but failed to send to NIC */ 124 uint64_t tx_dropped; 125 }; 126 127 /* kni device statistics array */ 128 static struct kni_interface_stats kni_stats[RTE_MAX_ETHPORTS]; 129 130 static int kni_change_mtu(uint16_t port_id, unsigned int new_mtu); 131 static int kni_config_network_interface(uint16_t port_id, uint8_t if_up); 132 static int kni_config_mac_address(uint16_t port_id, uint8_t mac_addr[]); 133 134 static rte_atomic32_t kni_stop = RTE_ATOMIC32_INIT(0); 135 static rte_atomic32_t kni_pause = RTE_ATOMIC32_INIT(0); 136 137 /* Print out statistics on packets handled */ 138 static void 139 print_stats(void) 140 { 141 uint16_t i; 142 143 printf("\n**KNI example application statistics**\n" 144 "====== ============== ============ ============ ============ ============\n" 145 " Port Lcore(RX/TX) rx_packets rx_dropped tx_packets tx_dropped\n" 146 "------ -------------- ------------ ------------ ------------ ------------\n"); 147 for (i = 0; i < RTE_MAX_ETHPORTS; i++) { 148 if (!kni_port_params_array[i]) 149 continue; 150 151 printf("%7d %10u/%2u %13"PRIu64" %13"PRIu64" %13"PRIu64" " 152 "%13"PRIu64"\n", i, 153 kni_port_params_array[i]->lcore_rx, 154 kni_port_params_array[i]->lcore_tx, 155 kni_stats[i].rx_packets, 156 kni_stats[i].rx_dropped, 157 kni_stats[i].tx_packets, 158 kni_stats[i].tx_dropped); 159 } 160 printf("====== ============== ============ ============ ============ ============\n"); 161 162 fflush(stdout); 163 } 164 165 /* Custom handling of signals to handle stats and kni processing */ 166 static void 167 signal_handler(int signum) 168 { 169 /* When we receive a USR1 signal, print stats */ 170 if (signum == SIGUSR1) { 171 print_stats(); 172 } 173 174 /* When we receive a USR2 signal, reset stats */ 175 if (signum == SIGUSR2) { 176 memset(&kni_stats, 0, sizeof(kni_stats)); 177 printf("\n** Statistics have been reset **\n"); 178 return; 179 } 180 181 /* 182 * When we receive a RTMIN or SIGINT or SIGTERM signal, 183 * stop kni processing 184 */ 185 if (signum == SIGRTMIN || signum == SIGINT || signum == SIGTERM) { 186 printf("\nSIGRTMIN/SIGINT/SIGTERM received. " 187 "KNI processing stopping.\n"); 188 rte_atomic32_inc(&kni_stop); 189 return; 190 } 191 } 192 193 static void 194 kni_burst_free_mbufs(struct rte_mbuf **pkts, unsigned num) 195 { 196 unsigned i; 197 198 if (pkts == NULL) 199 return; 200 201 for (i = 0; i < num; i++) { 202 rte_pktmbuf_free(pkts[i]); 203 pkts[i] = NULL; 204 } 205 } 206 207 /** 208 * Interface to burst rx and enqueue mbufs into rx_q 209 */ 210 static void 211 kni_ingress(struct kni_port_params *p) 212 { 213 uint8_t i; 214 uint16_t port_id; 215 unsigned nb_rx, num; 216 uint32_t nb_kni; 217 struct rte_mbuf *pkts_burst[PKT_BURST_SZ]; 218 219 if (p == NULL) 220 return; 221 222 nb_kni = p->nb_kni; 223 port_id = p->port_id; 224 for (i = 0; i < nb_kni; i++) { 225 /* Burst rx from eth */ 226 nb_rx = rte_eth_rx_burst(port_id, 0, pkts_burst, PKT_BURST_SZ); 227 if (unlikely(nb_rx > PKT_BURST_SZ)) { 228 RTE_LOG(ERR, APP, "Error receiving from eth\n"); 229 return; 230 } 231 /* Burst tx to kni */ 232 num = rte_kni_tx_burst(p->kni[i], pkts_burst, nb_rx); 233 if (num) 234 kni_stats[port_id].rx_packets += num; 235 236 rte_kni_handle_request(p->kni[i]); 237 if (unlikely(num < nb_rx)) { 238 /* Free mbufs not tx to kni interface */ 239 kni_burst_free_mbufs(&pkts_burst[num], nb_rx - num); 240 kni_stats[port_id].rx_dropped += nb_rx - num; 241 } 242 } 243 } 244 245 /** 246 * Interface to dequeue mbufs from tx_q and burst tx 247 */ 248 static void 249 kni_egress(struct kni_port_params *p) 250 { 251 uint8_t i; 252 uint16_t port_id; 253 unsigned nb_tx, num; 254 uint32_t nb_kni; 255 struct rte_mbuf *pkts_burst[PKT_BURST_SZ]; 256 257 if (p == NULL) 258 return; 259 260 nb_kni = p->nb_kni; 261 port_id = p->port_id; 262 for (i = 0; i < nb_kni; i++) { 263 /* Burst rx from kni */ 264 num = rte_kni_rx_burst(p->kni[i], pkts_burst, PKT_BURST_SZ); 265 if (unlikely(num > PKT_BURST_SZ)) { 266 RTE_LOG(ERR, APP, "Error receiving from KNI\n"); 267 return; 268 } 269 /* Burst tx to eth */ 270 nb_tx = rte_eth_tx_burst(port_id, 0, pkts_burst, (uint16_t)num); 271 if (nb_tx) 272 kni_stats[port_id].tx_packets += nb_tx; 273 if (unlikely(nb_tx < num)) { 274 /* Free mbufs not tx to NIC */ 275 kni_burst_free_mbufs(&pkts_burst[nb_tx], num - nb_tx); 276 kni_stats[port_id].tx_dropped += num - nb_tx; 277 } 278 } 279 } 280 281 static int 282 main_loop(__rte_unused void *arg) 283 { 284 uint16_t i; 285 int32_t f_stop; 286 int32_t f_pause; 287 const unsigned lcore_id = rte_lcore_id(); 288 enum lcore_rxtx { 289 LCORE_NONE, 290 LCORE_RX, 291 LCORE_TX, 292 LCORE_MAX 293 }; 294 enum lcore_rxtx flag = LCORE_NONE; 295 296 RTE_ETH_FOREACH_DEV(i) { 297 if (!kni_port_params_array[i]) 298 continue; 299 if (kni_port_params_array[i]->lcore_rx == (uint8_t)lcore_id) { 300 flag = LCORE_RX; 301 break; 302 } else if (kni_port_params_array[i]->lcore_tx == 303 (uint8_t)lcore_id) { 304 flag = LCORE_TX; 305 break; 306 } 307 } 308 309 if (flag == LCORE_RX) { 310 RTE_LOG(INFO, APP, "Lcore %u is reading from port %d\n", 311 kni_port_params_array[i]->lcore_rx, 312 kni_port_params_array[i]->port_id); 313 while (1) { 314 f_stop = rte_atomic32_read(&kni_stop); 315 f_pause = rte_atomic32_read(&kni_pause); 316 if (f_stop) 317 break; 318 if (f_pause) 319 continue; 320 kni_ingress(kni_port_params_array[i]); 321 } 322 } else if (flag == LCORE_TX) { 323 RTE_LOG(INFO, APP, "Lcore %u is writing to port %d\n", 324 kni_port_params_array[i]->lcore_tx, 325 kni_port_params_array[i]->port_id); 326 while (1) { 327 f_stop = rte_atomic32_read(&kni_stop); 328 f_pause = rte_atomic32_read(&kni_pause); 329 if (f_stop) 330 break; 331 if (f_pause) 332 continue; 333 kni_egress(kni_port_params_array[i]); 334 } 335 } else 336 RTE_LOG(INFO, APP, "Lcore %u has nothing to do\n", lcore_id); 337 338 return 0; 339 } 340 341 /* Display usage instructions */ 342 static void 343 print_usage(const char *prgname) 344 { 345 RTE_LOG(INFO, APP, "\nUsage: %s [EAL options] -- -p PORTMASK -P -m " 346 "[--config (port,lcore_rx,lcore_tx,lcore_kthread...)" 347 "[,(port,lcore_rx,lcore_tx,lcore_kthread...)]]\n" 348 " -p PORTMASK: hex bitmask of ports to use\n" 349 " -P : enable promiscuous mode\n" 350 " -m : enable monitoring of port carrier state\n" 351 " --config (port,lcore_rx,lcore_tx,lcore_kthread...): " 352 "port and lcore configurations\n", 353 prgname); 354 } 355 356 /* Convert string to unsigned number. 0 is returned if error occurs */ 357 static uint32_t 358 parse_unsigned(const char *portmask) 359 { 360 char *end = NULL; 361 unsigned long num; 362 363 num = strtoul(portmask, &end, 16); 364 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 365 return 0; 366 367 return (uint32_t)num; 368 } 369 370 static void 371 print_config(void) 372 { 373 uint32_t i, j; 374 struct kni_port_params **p = kni_port_params_array; 375 376 for (i = 0; i < RTE_MAX_ETHPORTS; i++) { 377 if (!p[i]) 378 continue; 379 RTE_LOG(DEBUG, APP, "Port ID: %d\n", p[i]->port_id); 380 RTE_LOG(DEBUG, APP, "Rx lcore ID: %u, Tx lcore ID: %u\n", 381 p[i]->lcore_rx, p[i]->lcore_tx); 382 for (j = 0; j < p[i]->nb_lcore_k; j++) 383 RTE_LOG(DEBUG, APP, "Kernel thread lcore ID: %u\n", 384 p[i]->lcore_k[j]); 385 } 386 } 387 388 static int 389 parse_config(const char *arg) 390 { 391 const char *p, *p0 = arg; 392 char s[256], *end; 393 unsigned size; 394 enum fieldnames { 395 FLD_PORT = 0, 396 FLD_LCORE_RX, 397 FLD_LCORE_TX, 398 _NUM_FLD = KNI_MAX_KTHREAD + 3, 399 }; 400 int i, j, nb_token; 401 char *str_fld[_NUM_FLD]; 402 unsigned long int_fld[_NUM_FLD]; 403 uint16_t port_id, nb_kni_port_params = 0; 404 405 memset(&kni_port_params_array, 0, sizeof(kni_port_params_array)); 406 while (((p = strchr(p0, '(')) != NULL) && 407 nb_kni_port_params < RTE_MAX_ETHPORTS) { 408 p++; 409 if ((p0 = strchr(p, ')')) == NULL) 410 goto fail; 411 size = p0 - p; 412 if (size >= sizeof(s)) { 413 printf("Invalid config parameters\n"); 414 goto fail; 415 } 416 snprintf(s, sizeof(s), "%.*s", size, p); 417 nb_token = rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ','); 418 if (nb_token <= FLD_LCORE_TX) { 419 printf("Invalid config parameters\n"); 420 goto fail; 421 } 422 for (i = 0; i < nb_token; i++) { 423 errno = 0; 424 int_fld[i] = strtoul(str_fld[i], &end, 0); 425 if (errno != 0 || end == str_fld[i]) { 426 printf("Invalid config parameters\n"); 427 goto fail; 428 } 429 } 430 431 i = 0; 432 port_id = int_fld[i++]; 433 if (port_id >= RTE_MAX_ETHPORTS) { 434 printf("Port ID %d could not exceed the maximum %d\n", 435 port_id, RTE_MAX_ETHPORTS); 436 goto fail; 437 } 438 if (kni_port_params_array[port_id]) { 439 printf("Port %d has been configured\n", port_id); 440 goto fail; 441 } 442 kni_port_params_array[port_id] = 443 rte_zmalloc("KNI_port_params", 444 sizeof(struct kni_port_params), RTE_CACHE_LINE_SIZE); 445 kni_port_params_array[port_id]->port_id = port_id; 446 kni_port_params_array[port_id]->lcore_rx = 447 (uint8_t)int_fld[i++]; 448 kni_port_params_array[port_id]->lcore_tx = 449 (uint8_t)int_fld[i++]; 450 if (kni_port_params_array[port_id]->lcore_rx >= RTE_MAX_LCORE || 451 kni_port_params_array[port_id]->lcore_tx >= RTE_MAX_LCORE) { 452 printf("lcore_rx %u or lcore_tx %u ID could not " 453 "exceed the maximum %u\n", 454 kni_port_params_array[port_id]->lcore_rx, 455 kni_port_params_array[port_id]->lcore_tx, 456 (unsigned)RTE_MAX_LCORE); 457 goto fail; 458 } 459 for (j = 0; i < nb_token && j < KNI_MAX_KTHREAD; i++, j++) 460 kni_port_params_array[port_id]->lcore_k[j] = 461 (uint8_t)int_fld[i]; 462 kni_port_params_array[port_id]->nb_lcore_k = j; 463 } 464 print_config(); 465 466 return 0; 467 468 fail: 469 for (i = 0; i < RTE_MAX_ETHPORTS; i++) { 470 if (kni_port_params_array[i]) { 471 rte_free(kni_port_params_array[i]); 472 kni_port_params_array[i] = NULL; 473 } 474 } 475 476 return -1; 477 } 478 479 static int 480 validate_parameters(uint32_t portmask) 481 { 482 uint32_t i; 483 484 if (!portmask) { 485 printf("No port configured in port mask\n"); 486 return -1; 487 } 488 489 for (i = 0; i < RTE_MAX_ETHPORTS; i++) { 490 if (((portmask & (1 << i)) && !kni_port_params_array[i]) || 491 (!(portmask & (1 << i)) && kni_port_params_array[i])) 492 rte_exit(EXIT_FAILURE, "portmask is not consistent " 493 "to port ids specified in --config\n"); 494 495 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\ 496 (unsigned)(kni_port_params_array[i]->lcore_rx))) 497 rte_exit(EXIT_FAILURE, "lcore id %u for " 498 "port %d receiving not enabled\n", 499 kni_port_params_array[i]->lcore_rx, 500 kni_port_params_array[i]->port_id); 501 502 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\ 503 (unsigned)(kni_port_params_array[i]->lcore_tx))) 504 rte_exit(EXIT_FAILURE, "lcore id %u for " 505 "port %d transmitting not enabled\n", 506 kni_port_params_array[i]->lcore_tx, 507 kni_port_params_array[i]->port_id); 508 509 } 510 511 return 0; 512 } 513 514 #define CMDLINE_OPT_CONFIG "config" 515 516 /* Parse the arguments given in the command line of the application */ 517 static int 518 parse_args(int argc, char **argv) 519 { 520 int opt, longindex, ret = 0; 521 const char *prgname = argv[0]; 522 static struct option longopts[] = { 523 {CMDLINE_OPT_CONFIG, required_argument, NULL, 0}, 524 {NULL, 0, NULL, 0} 525 }; 526 527 /* Disable printing messages within getopt() */ 528 opterr = 0; 529 530 /* Parse command line */ 531 while ((opt = getopt_long(argc, argv, "p:Pm", longopts, 532 &longindex)) != EOF) { 533 switch (opt) { 534 case 'p': 535 ports_mask = parse_unsigned(optarg); 536 break; 537 case 'P': 538 promiscuous_on = 1; 539 break; 540 case 'm': 541 monitor_links = 1; 542 break; 543 case 0: 544 if (!strncmp(longopts[longindex].name, 545 CMDLINE_OPT_CONFIG, 546 sizeof(CMDLINE_OPT_CONFIG))) { 547 ret = parse_config(optarg); 548 if (ret) { 549 printf("Invalid config\n"); 550 print_usage(prgname); 551 return -1; 552 } 553 } 554 break; 555 default: 556 print_usage(prgname); 557 rte_exit(EXIT_FAILURE, "Invalid option specified\n"); 558 } 559 } 560 561 /* Check that options were parsed ok */ 562 if (validate_parameters(ports_mask) < 0) { 563 print_usage(prgname); 564 rte_exit(EXIT_FAILURE, "Invalid parameters\n"); 565 } 566 567 return ret; 568 } 569 570 /* Initialize KNI subsystem */ 571 static void 572 init_kni(void) 573 { 574 unsigned int num_of_kni_ports = 0, i; 575 struct kni_port_params **params = kni_port_params_array; 576 577 /* Calculate the maximum number of KNI interfaces that will be used */ 578 for (i = 0; i < RTE_MAX_ETHPORTS; i++) { 579 if (kni_port_params_array[i]) { 580 num_of_kni_ports += (params[i]->nb_lcore_k ? 581 params[i]->nb_lcore_k : 1); 582 } 583 } 584 585 /* Invoke rte KNI init to preallocate the ports */ 586 rte_kni_init(num_of_kni_ports); 587 } 588 589 /* Initialise a single port on an Ethernet device */ 590 static void 591 init_port(uint16_t port) 592 { 593 int ret; 594 uint16_t nb_rxd = NB_RXD; 595 uint16_t nb_txd = NB_TXD; 596 struct rte_eth_dev_info dev_info; 597 struct rte_eth_rxconf rxq_conf; 598 struct rte_eth_txconf txq_conf; 599 struct rte_eth_conf local_port_conf = port_conf; 600 601 /* Initialise device and RX/TX queues */ 602 RTE_LOG(INFO, APP, "Initialising port %u ...\n", (unsigned)port); 603 fflush(stdout); 604 605 ret = rte_eth_dev_info_get(port, &dev_info); 606 if (ret != 0) 607 rte_exit(EXIT_FAILURE, 608 "Error during getting device (port %u) info: %s\n", 609 port, strerror(-ret)); 610 611 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE) 612 local_port_conf.txmode.offloads |= 613 DEV_TX_OFFLOAD_MBUF_FAST_FREE; 614 ret = rte_eth_dev_configure(port, 1, 1, &local_port_conf); 615 if (ret < 0) 616 rte_exit(EXIT_FAILURE, "Could not configure port%u (%d)\n", 617 (unsigned)port, ret); 618 619 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd); 620 if (ret < 0) 621 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors " 622 "for port%u (%d)\n", (unsigned)port, ret); 623 624 rxq_conf = dev_info.default_rxconf; 625 rxq_conf.offloads = local_port_conf.rxmode.offloads; 626 ret = rte_eth_rx_queue_setup(port, 0, nb_rxd, 627 rte_eth_dev_socket_id(port), &rxq_conf, pktmbuf_pool); 628 if (ret < 0) 629 rte_exit(EXIT_FAILURE, "Could not setup up RX queue for " 630 "port%u (%d)\n", (unsigned)port, ret); 631 632 txq_conf = dev_info.default_txconf; 633 txq_conf.offloads = local_port_conf.txmode.offloads; 634 ret = rte_eth_tx_queue_setup(port, 0, nb_txd, 635 rte_eth_dev_socket_id(port), &txq_conf); 636 if (ret < 0) 637 rte_exit(EXIT_FAILURE, "Could not setup up TX queue for " 638 "port%u (%d)\n", (unsigned)port, ret); 639 640 ret = rte_eth_dev_start(port); 641 if (ret < 0) 642 rte_exit(EXIT_FAILURE, "Could not start port%u (%d)\n", 643 (unsigned)port, ret); 644 645 if (promiscuous_on) { 646 ret = rte_eth_promiscuous_enable(port); 647 if (ret != 0) 648 rte_exit(EXIT_FAILURE, 649 "Could not enable promiscuous mode for port%u: %s\n", 650 port, rte_strerror(-ret)); 651 } 652 } 653 654 /* Check the link status of all ports in up to 9s, and print them finally */ 655 static void 656 check_all_ports_link_status(uint32_t port_mask) 657 { 658 #define CHECK_INTERVAL 100 /* 100ms */ 659 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 660 uint16_t portid; 661 uint8_t count, all_ports_up, print_flag = 0; 662 struct rte_eth_link link; 663 int ret; 664 665 printf("\nChecking link status\n"); 666 fflush(stdout); 667 for (count = 0; count <= MAX_CHECK_TIME; count++) { 668 all_ports_up = 1; 669 RTE_ETH_FOREACH_DEV(portid) { 670 if ((port_mask & (1 << portid)) == 0) 671 continue; 672 memset(&link, 0, sizeof(link)); 673 ret = rte_eth_link_get_nowait(portid, &link); 674 if (ret < 0) { 675 all_ports_up = 0; 676 if (print_flag == 1) 677 printf("Port %u link get failed: %s\n", 678 portid, rte_strerror(-ret)); 679 continue; 680 } 681 /* print link status if flag set */ 682 if (print_flag == 1) { 683 if (link.link_status) 684 printf( 685 "Port%d Link Up - speed %uMbps - %s\n", 686 portid, link.link_speed, 687 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? 688 ("full-duplex") : ("half-duplex")); 689 else 690 printf("Port %d Link Down\n", portid); 691 continue; 692 } 693 /* clear all_ports_up flag if any link down */ 694 if (link.link_status == ETH_LINK_DOWN) { 695 all_ports_up = 0; 696 break; 697 } 698 } 699 /* after finally printing all link status, get out */ 700 if (print_flag == 1) 701 break; 702 703 if (all_ports_up == 0) { 704 printf("."); 705 fflush(stdout); 706 rte_delay_ms(CHECK_INTERVAL); 707 } 708 709 /* set the print_flag if all ports up or timeout */ 710 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 711 print_flag = 1; 712 printf("done\n"); 713 } 714 } 715 } 716 717 static void 718 log_link_state(struct rte_kni *kni, int prev, struct rte_eth_link *link) 719 { 720 if (kni == NULL || link == NULL) 721 return; 722 723 if (prev == ETH_LINK_DOWN && link->link_status == ETH_LINK_UP) { 724 RTE_LOG(INFO, APP, "%s NIC Link is Up %d Mbps %s %s.\n", 725 rte_kni_get_name(kni), 726 link->link_speed, 727 link->link_autoneg ? "(AutoNeg)" : "(Fixed)", 728 link->link_duplex ? "Full Duplex" : "Half Duplex"); 729 } else if (prev == ETH_LINK_UP && link->link_status == ETH_LINK_DOWN) { 730 RTE_LOG(INFO, APP, "%s NIC Link is Down.\n", 731 rte_kni_get_name(kni)); 732 } 733 } 734 735 /* 736 * Monitor the link status of all ports and update the 737 * corresponding KNI interface(s) 738 */ 739 static void * 740 monitor_all_ports_link_status(void *arg) 741 { 742 uint16_t portid; 743 struct rte_eth_link link; 744 unsigned int i; 745 struct kni_port_params **p = kni_port_params_array; 746 int prev; 747 (void) arg; 748 int ret; 749 750 while (monitor_links) { 751 rte_delay_ms(500); 752 RTE_ETH_FOREACH_DEV(portid) { 753 if ((ports_mask & (1 << portid)) == 0) 754 continue; 755 memset(&link, 0, sizeof(link)); 756 ret = rte_eth_link_get_nowait(portid, &link); 757 if (ret < 0) { 758 RTE_LOG(ERR, APP, 759 "Get link failed (port %u): %s\n", 760 portid, rte_strerror(-ret)); 761 continue; 762 } 763 for (i = 0; i < p[portid]->nb_kni; i++) { 764 prev = rte_kni_update_link(p[portid]->kni[i], 765 link.link_status); 766 log_link_state(p[portid]->kni[i], prev, &link); 767 } 768 } 769 } 770 return NULL; 771 } 772 773 static int 774 kni_change_mtu_(uint16_t port_id, unsigned int new_mtu) 775 { 776 int ret; 777 uint16_t nb_rxd = NB_RXD; 778 uint16_t nb_txd = NB_TXD; 779 struct rte_eth_conf conf; 780 struct rte_eth_dev_info dev_info; 781 struct rte_eth_rxconf rxq_conf; 782 struct rte_eth_txconf txq_conf; 783 784 if (!rte_eth_dev_is_valid_port(port_id)) { 785 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id); 786 return -EINVAL; 787 } 788 789 RTE_LOG(INFO, APP, "Change MTU of port %d to %u\n", port_id, new_mtu); 790 791 /* Stop specific port */ 792 rte_eth_dev_stop(port_id); 793 794 memcpy(&conf, &port_conf, sizeof(conf)); 795 /* Set new MTU */ 796 if (new_mtu > RTE_ETHER_MAX_LEN) 797 conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME; 798 else 799 conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME; 800 801 /* mtu + length of header + length of FCS = max pkt length */ 802 conf.rxmode.max_rx_pkt_len = new_mtu + KNI_ENET_HEADER_SIZE + 803 KNI_ENET_FCS_SIZE; 804 ret = rte_eth_dev_configure(port_id, 1, 1, &conf); 805 if (ret < 0) { 806 RTE_LOG(ERR, APP, "Fail to reconfigure port %d\n", port_id); 807 return ret; 808 } 809 810 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd, &nb_txd); 811 if (ret < 0) 812 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors " 813 "for port%u (%d)\n", (unsigned int)port_id, 814 ret); 815 816 ret = rte_eth_dev_info_get(port_id, &dev_info); 817 if (ret != 0) { 818 RTE_LOG(ERR, APP, 819 "Error during getting device (port %u) info: %s\n", 820 port_id, strerror(-ret)); 821 822 return ret; 823 } 824 825 rxq_conf = dev_info.default_rxconf; 826 rxq_conf.offloads = conf.rxmode.offloads; 827 ret = rte_eth_rx_queue_setup(port_id, 0, nb_rxd, 828 rte_eth_dev_socket_id(port_id), &rxq_conf, pktmbuf_pool); 829 if (ret < 0) { 830 RTE_LOG(ERR, APP, "Fail to setup Rx queue of port %d\n", 831 port_id); 832 return ret; 833 } 834 835 txq_conf = dev_info.default_txconf; 836 txq_conf.offloads = conf.txmode.offloads; 837 ret = rte_eth_tx_queue_setup(port_id, 0, nb_txd, 838 rte_eth_dev_socket_id(port_id), &txq_conf); 839 if (ret < 0) { 840 RTE_LOG(ERR, APP, "Fail to setup Tx queue of port %d\n", 841 port_id); 842 return ret; 843 } 844 845 /* Restart specific port */ 846 ret = rte_eth_dev_start(port_id); 847 if (ret < 0) { 848 RTE_LOG(ERR, APP, "Fail to restart port %d\n", port_id); 849 return ret; 850 } 851 852 return 0; 853 } 854 855 /* Callback for request of changing MTU */ 856 static int 857 kni_change_mtu(uint16_t port_id, unsigned int new_mtu) 858 { 859 int ret; 860 861 rte_atomic32_inc(&kni_pause); 862 ret = kni_change_mtu_(port_id, new_mtu); 863 rte_atomic32_dec(&kni_pause); 864 865 return ret; 866 } 867 868 /* Callback for request of configuring network interface up/down */ 869 static int 870 kni_config_network_interface(uint16_t port_id, uint8_t if_up) 871 { 872 int ret = 0; 873 874 if (!rte_eth_dev_is_valid_port(port_id)) { 875 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id); 876 return -EINVAL; 877 } 878 879 RTE_LOG(INFO, APP, "Configure network interface of %d %s\n", 880 port_id, if_up ? "up" : "down"); 881 882 rte_atomic32_inc(&kni_pause); 883 884 if (if_up != 0) { /* Configure network interface up */ 885 rte_eth_dev_stop(port_id); 886 ret = rte_eth_dev_start(port_id); 887 } else /* Configure network interface down */ 888 rte_eth_dev_stop(port_id); 889 890 rte_atomic32_dec(&kni_pause); 891 892 if (ret < 0) 893 RTE_LOG(ERR, APP, "Failed to start port %d\n", port_id); 894 895 return ret; 896 } 897 898 static void 899 print_ethaddr(const char *name, struct rte_ether_addr *mac_addr) 900 { 901 char buf[RTE_ETHER_ADDR_FMT_SIZE]; 902 rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, mac_addr); 903 RTE_LOG(INFO, APP, "\t%s%s\n", name, buf); 904 } 905 906 /* Callback for request of configuring mac address */ 907 static int 908 kni_config_mac_address(uint16_t port_id, uint8_t mac_addr[]) 909 { 910 int ret = 0; 911 912 if (!rte_eth_dev_is_valid_port(port_id)) { 913 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id); 914 return -EINVAL; 915 } 916 917 RTE_LOG(INFO, APP, "Configure mac address of %d\n", port_id); 918 print_ethaddr("Address:", (struct rte_ether_addr *)mac_addr); 919 920 ret = rte_eth_dev_default_mac_addr_set(port_id, 921 (struct rte_ether_addr *)mac_addr); 922 if (ret < 0) 923 RTE_LOG(ERR, APP, "Failed to config mac_addr for port %d\n", 924 port_id); 925 926 return ret; 927 } 928 929 static int 930 kni_alloc(uint16_t port_id) 931 { 932 uint8_t i; 933 struct rte_kni *kni; 934 struct rte_kni_conf conf; 935 struct kni_port_params **params = kni_port_params_array; 936 int ret; 937 938 if (port_id >= RTE_MAX_ETHPORTS || !params[port_id]) 939 return -1; 940 941 params[port_id]->nb_kni = params[port_id]->nb_lcore_k ? 942 params[port_id]->nb_lcore_k : 1; 943 944 for (i = 0; i < params[port_id]->nb_kni; i++) { 945 /* Clear conf at first */ 946 memset(&conf, 0, sizeof(conf)); 947 if (params[port_id]->nb_lcore_k) { 948 snprintf(conf.name, RTE_KNI_NAMESIZE, 949 "vEth%u_%u", port_id, i); 950 conf.core_id = params[port_id]->lcore_k[i]; 951 conf.force_bind = 1; 952 } else 953 snprintf(conf.name, RTE_KNI_NAMESIZE, 954 "vEth%u", port_id); 955 conf.group_id = port_id; 956 conf.mbuf_size = MAX_PACKET_SZ; 957 /* 958 * The first KNI device associated to a port 959 * is the master, for multiple kernel thread 960 * environment. 961 */ 962 if (i == 0) { 963 struct rte_kni_ops ops; 964 struct rte_eth_dev_info dev_info; 965 966 ret = rte_eth_dev_info_get(port_id, &dev_info); 967 if (ret != 0) 968 rte_exit(EXIT_FAILURE, 969 "Error during getting device (port %u) info: %s\n", 970 port_id, strerror(-ret)); 971 972 /* Get the interface default mac address */ 973 ret = rte_eth_macaddr_get(port_id, 974 (struct rte_ether_addr *)&conf.mac_addr); 975 if (ret != 0) 976 rte_exit(EXIT_FAILURE, 977 "Failed to get MAC address (port %u): %s\n", 978 port_id, rte_strerror(-ret)); 979 980 rte_eth_dev_get_mtu(port_id, &conf.mtu); 981 982 conf.min_mtu = dev_info.min_mtu; 983 conf.max_mtu = dev_info.max_mtu; 984 985 memset(&ops, 0, sizeof(ops)); 986 ops.port_id = port_id; 987 ops.change_mtu = kni_change_mtu; 988 ops.config_network_if = kni_config_network_interface; 989 ops.config_mac_address = kni_config_mac_address; 990 991 kni = rte_kni_alloc(pktmbuf_pool, &conf, &ops); 992 } else 993 kni = rte_kni_alloc(pktmbuf_pool, &conf, NULL); 994 995 if (!kni) 996 rte_exit(EXIT_FAILURE, "Fail to create kni for " 997 "port: %d\n", port_id); 998 params[port_id]->kni[i] = kni; 999 } 1000 1001 return 0; 1002 } 1003 1004 static int 1005 kni_free_kni(uint16_t port_id) 1006 { 1007 uint8_t i; 1008 struct kni_port_params **p = kni_port_params_array; 1009 1010 if (port_id >= RTE_MAX_ETHPORTS || !p[port_id]) 1011 return -1; 1012 1013 for (i = 0; i < p[port_id]->nb_kni; i++) { 1014 if (rte_kni_release(p[port_id]->kni[i])) 1015 printf("Fail to release kni\n"); 1016 p[port_id]->kni[i] = NULL; 1017 } 1018 rte_eth_dev_stop(port_id); 1019 1020 return 0; 1021 } 1022 1023 /* Initialise ports/queues etc. and start main loop on each core */ 1024 int 1025 main(int argc, char** argv) 1026 { 1027 int ret; 1028 uint16_t nb_sys_ports, port; 1029 unsigned i; 1030 void *retval; 1031 pthread_t kni_link_tid; 1032 int pid; 1033 1034 /* Associate signal_hanlder function with USR signals */ 1035 signal(SIGUSR1, signal_handler); 1036 signal(SIGUSR2, signal_handler); 1037 signal(SIGRTMIN, signal_handler); 1038 signal(SIGINT, signal_handler); 1039 signal(SIGTERM, signal_handler); 1040 1041 /* Initialise EAL */ 1042 ret = rte_eal_init(argc, argv); 1043 if (ret < 0) 1044 rte_exit(EXIT_FAILURE, "Could not initialise EAL (%d)\n", ret); 1045 argc -= ret; 1046 argv += ret; 1047 1048 /* Parse application arguments (after the EAL ones) */ 1049 ret = parse_args(argc, argv); 1050 if (ret < 0) 1051 rte_exit(EXIT_FAILURE, "Could not parse input parameters\n"); 1052 1053 /* Create the mbuf pool */ 1054 pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 1055 MEMPOOL_CACHE_SZ, 0, MBUF_DATA_SZ, rte_socket_id()); 1056 if (pktmbuf_pool == NULL) { 1057 rte_exit(EXIT_FAILURE, "Could not initialise mbuf pool\n"); 1058 return -1; 1059 } 1060 1061 /* Get number of ports found in scan */ 1062 nb_sys_ports = rte_eth_dev_count_avail(); 1063 if (nb_sys_ports == 0) 1064 rte_exit(EXIT_FAILURE, "No supported Ethernet device found\n"); 1065 1066 /* Check if the configured port ID is valid */ 1067 for (i = 0; i < RTE_MAX_ETHPORTS; i++) 1068 if (kni_port_params_array[i] && !rte_eth_dev_is_valid_port(i)) 1069 rte_exit(EXIT_FAILURE, "Configured invalid " 1070 "port ID %u\n", i); 1071 1072 /* Initialize KNI subsystem */ 1073 init_kni(); 1074 1075 /* Initialise each port */ 1076 RTE_ETH_FOREACH_DEV(port) { 1077 /* Skip ports that are not enabled */ 1078 if (!(ports_mask & (1 << port))) 1079 continue; 1080 init_port(port); 1081 1082 if (port >= RTE_MAX_ETHPORTS) 1083 rte_exit(EXIT_FAILURE, "Can not use more than " 1084 "%d ports for kni\n", RTE_MAX_ETHPORTS); 1085 1086 kni_alloc(port); 1087 } 1088 check_all_ports_link_status(ports_mask); 1089 1090 pid = getpid(); 1091 RTE_LOG(INFO, APP, "========================\n"); 1092 RTE_LOG(INFO, APP, "KNI Running\n"); 1093 RTE_LOG(INFO, APP, "kill -SIGUSR1 %d\n", pid); 1094 RTE_LOG(INFO, APP, " Show KNI Statistics.\n"); 1095 RTE_LOG(INFO, APP, "kill -SIGUSR2 %d\n", pid); 1096 RTE_LOG(INFO, APP, " Zero KNI Statistics.\n"); 1097 RTE_LOG(INFO, APP, "========================\n"); 1098 fflush(stdout); 1099 1100 ret = rte_ctrl_thread_create(&kni_link_tid, 1101 "KNI link status check", NULL, 1102 monitor_all_ports_link_status, NULL); 1103 if (ret < 0) 1104 rte_exit(EXIT_FAILURE, 1105 "Could not create link status thread!\n"); 1106 1107 /* Launch per-lcore function on every lcore */ 1108 rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER); 1109 RTE_LCORE_FOREACH_SLAVE(i) { 1110 if (rte_eal_wait_lcore(i) < 0) 1111 return -1; 1112 } 1113 monitor_links = 0; 1114 pthread_join(kni_link_tid, &retval); 1115 1116 /* Release resources */ 1117 RTE_ETH_FOREACH_DEV(port) { 1118 if (!(ports_mask & (1 << port))) 1119 continue; 1120 kni_free_kni(port); 1121 } 1122 for (i = 0; i < RTE_MAX_ETHPORTS; i++) 1123 if (kni_port_params_array[i]) { 1124 rte_free(kni_port_params_array[i]); 1125 kni_port_params_array[i] = NULL; 1126 } 1127 1128 return 0; 1129 } 1130