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 char link_status_text[RTE_ETH_LINK_MAX_STR_LEN]; 665 666 printf("\nChecking link status\n"); 667 fflush(stdout); 668 for (count = 0; count <= MAX_CHECK_TIME; count++) { 669 all_ports_up = 1; 670 RTE_ETH_FOREACH_DEV(portid) { 671 if ((port_mask & (1 << portid)) == 0) 672 continue; 673 memset(&link, 0, sizeof(link)); 674 ret = rte_eth_link_get_nowait(portid, &link); 675 if (ret < 0) { 676 all_ports_up = 0; 677 if (print_flag == 1) 678 printf("Port %u link get failed: %s\n", 679 portid, rte_strerror(-ret)); 680 continue; 681 } 682 /* print link status if flag set */ 683 if (print_flag == 1) { 684 rte_eth_link_to_str(link_status_text, 685 sizeof(link_status_text), &link); 686 printf("Port %d %s\n", portid, 687 link_status_text); 688 continue; 689 } 690 /* clear all_ports_up flag if any link down */ 691 if (link.link_status == ETH_LINK_DOWN) { 692 all_ports_up = 0; 693 break; 694 } 695 } 696 /* after finally printing all link status, get out */ 697 if (print_flag == 1) 698 break; 699 700 if (all_ports_up == 0) { 701 printf("."); 702 fflush(stdout); 703 rte_delay_ms(CHECK_INTERVAL); 704 } 705 706 /* set the print_flag if all ports up or timeout */ 707 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 708 print_flag = 1; 709 printf("done\n"); 710 } 711 } 712 } 713 714 static void 715 log_link_state(struct rte_kni *kni, int prev, struct rte_eth_link *link) 716 { 717 char link_status_text[RTE_ETH_LINK_MAX_STR_LEN]; 718 if (kni == NULL || link == NULL) 719 return; 720 721 rte_eth_link_to_str(link_status_text, sizeof(link_status_text), link); 722 if (prev != link->link_status) 723 RTE_LOG(INFO, APP, "%s NIC %s", 724 rte_kni_get_name(kni), 725 link_status_text); 726 } 727 728 /* 729 * Monitor the link status of all ports and update the 730 * corresponding KNI interface(s) 731 */ 732 static void * 733 monitor_all_ports_link_status(void *arg) 734 { 735 uint16_t portid; 736 struct rte_eth_link link; 737 unsigned int i; 738 struct kni_port_params **p = kni_port_params_array; 739 int prev; 740 (void) arg; 741 int ret; 742 743 while (monitor_links) { 744 rte_delay_ms(500); 745 RTE_ETH_FOREACH_DEV(portid) { 746 if ((ports_mask & (1 << portid)) == 0) 747 continue; 748 memset(&link, 0, sizeof(link)); 749 ret = rte_eth_link_get_nowait(portid, &link); 750 if (ret < 0) { 751 RTE_LOG(ERR, APP, 752 "Get link failed (port %u): %s\n", 753 portid, rte_strerror(-ret)); 754 continue; 755 } 756 for (i = 0; i < p[portid]->nb_kni; i++) { 757 prev = rte_kni_update_link(p[portid]->kni[i], 758 link.link_status); 759 log_link_state(p[portid]->kni[i], prev, &link); 760 } 761 } 762 } 763 return NULL; 764 } 765 766 static int 767 kni_change_mtu_(uint16_t port_id, unsigned int new_mtu) 768 { 769 int ret; 770 uint16_t nb_rxd = NB_RXD; 771 uint16_t nb_txd = NB_TXD; 772 struct rte_eth_conf conf; 773 struct rte_eth_dev_info dev_info; 774 struct rte_eth_rxconf rxq_conf; 775 struct rte_eth_txconf txq_conf; 776 777 if (!rte_eth_dev_is_valid_port(port_id)) { 778 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id); 779 return -EINVAL; 780 } 781 782 RTE_LOG(INFO, APP, "Change MTU of port %d to %u\n", port_id, new_mtu); 783 784 /* Stop specific port */ 785 rte_eth_dev_stop(port_id); 786 787 memcpy(&conf, &port_conf, sizeof(conf)); 788 /* Set new MTU */ 789 if (new_mtu > RTE_ETHER_MAX_LEN) 790 conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME; 791 else 792 conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME; 793 794 /* mtu + length of header + length of FCS = max pkt length */ 795 conf.rxmode.max_rx_pkt_len = new_mtu + KNI_ENET_HEADER_SIZE + 796 KNI_ENET_FCS_SIZE; 797 ret = rte_eth_dev_configure(port_id, 1, 1, &conf); 798 if (ret < 0) { 799 RTE_LOG(ERR, APP, "Fail to reconfigure port %d\n", port_id); 800 return ret; 801 } 802 803 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd, &nb_txd); 804 if (ret < 0) 805 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors " 806 "for port%u (%d)\n", (unsigned int)port_id, 807 ret); 808 809 ret = rte_eth_dev_info_get(port_id, &dev_info); 810 if (ret != 0) { 811 RTE_LOG(ERR, APP, 812 "Error during getting device (port %u) info: %s\n", 813 port_id, strerror(-ret)); 814 815 return ret; 816 } 817 818 rxq_conf = dev_info.default_rxconf; 819 rxq_conf.offloads = conf.rxmode.offloads; 820 ret = rte_eth_rx_queue_setup(port_id, 0, nb_rxd, 821 rte_eth_dev_socket_id(port_id), &rxq_conf, pktmbuf_pool); 822 if (ret < 0) { 823 RTE_LOG(ERR, APP, "Fail to setup Rx queue of port %d\n", 824 port_id); 825 return ret; 826 } 827 828 txq_conf = dev_info.default_txconf; 829 txq_conf.offloads = conf.txmode.offloads; 830 ret = rte_eth_tx_queue_setup(port_id, 0, nb_txd, 831 rte_eth_dev_socket_id(port_id), &txq_conf); 832 if (ret < 0) { 833 RTE_LOG(ERR, APP, "Fail to setup Tx queue of port %d\n", 834 port_id); 835 return ret; 836 } 837 838 /* Restart specific port */ 839 ret = rte_eth_dev_start(port_id); 840 if (ret < 0) { 841 RTE_LOG(ERR, APP, "Fail to restart port %d\n", port_id); 842 return ret; 843 } 844 845 return 0; 846 } 847 848 /* Callback for request of changing MTU */ 849 static int 850 kni_change_mtu(uint16_t port_id, unsigned int new_mtu) 851 { 852 int ret; 853 854 rte_atomic32_inc(&kni_pause); 855 ret = kni_change_mtu_(port_id, new_mtu); 856 rte_atomic32_dec(&kni_pause); 857 858 return ret; 859 } 860 861 /* Callback for request of configuring network interface up/down */ 862 static int 863 kni_config_network_interface(uint16_t port_id, uint8_t if_up) 864 { 865 int ret = 0; 866 867 if (!rte_eth_dev_is_valid_port(port_id)) { 868 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id); 869 return -EINVAL; 870 } 871 872 RTE_LOG(INFO, APP, "Configure network interface of %d %s\n", 873 port_id, if_up ? "up" : "down"); 874 875 rte_atomic32_inc(&kni_pause); 876 877 if (if_up != 0) { /* Configure network interface up */ 878 rte_eth_dev_stop(port_id); 879 ret = rte_eth_dev_start(port_id); 880 } else /* Configure network interface down */ 881 rte_eth_dev_stop(port_id); 882 883 rte_atomic32_dec(&kni_pause); 884 885 if (ret < 0) 886 RTE_LOG(ERR, APP, "Failed to start port %d\n", port_id); 887 888 return ret; 889 } 890 891 static void 892 print_ethaddr(const char *name, struct rte_ether_addr *mac_addr) 893 { 894 char buf[RTE_ETHER_ADDR_FMT_SIZE]; 895 rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, mac_addr); 896 RTE_LOG(INFO, APP, "\t%s%s\n", name, buf); 897 } 898 899 /* Callback for request of configuring mac address */ 900 static int 901 kni_config_mac_address(uint16_t port_id, uint8_t mac_addr[]) 902 { 903 int ret = 0; 904 905 if (!rte_eth_dev_is_valid_port(port_id)) { 906 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id); 907 return -EINVAL; 908 } 909 910 RTE_LOG(INFO, APP, "Configure mac address of %d\n", port_id); 911 print_ethaddr("Address:", (struct rte_ether_addr *)mac_addr); 912 913 ret = rte_eth_dev_default_mac_addr_set(port_id, 914 (struct rte_ether_addr *)mac_addr); 915 if (ret < 0) 916 RTE_LOG(ERR, APP, "Failed to config mac_addr for port %d\n", 917 port_id); 918 919 return ret; 920 } 921 922 static int 923 kni_alloc(uint16_t port_id) 924 { 925 uint8_t i; 926 struct rte_kni *kni; 927 struct rte_kni_conf conf; 928 struct kni_port_params **params = kni_port_params_array; 929 int ret; 930 931 if (port_id >= RTE_MAX_ETHPORTS || !params[port_id]) 932 return -1; 933 934 params[port_id]->nb_kni = params[port_id]->nb_lcore_k ? 935 params[port_id]->nb_lcore_k : 1; 936 937 for (i = 0; i < params[port_id]->nb_kni; i++) { 938 /* Clear conf at first */ 939 memset(&conf, 0, sizeof(conf)); 940 if (params[port_id]->nb_lcore_k) { 941 snprintf(conf.name, RTE_KNI_NAMESIZE, 942 "vEth%u_%u", port_id, i); 943 conf.core_id = params[port_id]->lcore_k[i]; 944 conf.force_bind = 1; 945 } else 946 snprintf(conf.name, RTE_KNI_NAMESIZE, 947 "vEth%u", port_id); 948 conf.group_id = port_id; 949 conf.mbuf_size = MAX_PACKET_SZ; 950 /* 951 * The first KNI device associated to a port 952 * is the master, for multiple kernel thread 953 * environment. 954 */ 955 if (i == 0) { 956 struct rte_kni_ops ops; 957 struct rte_eth_dev_info dev_info; 958 959 ret = rte_eth_dev_info_get(port_id, &dev_info); 960 if (ret != 0) 961 rte_exit(EXIT_FAILURE, 962 "Error during getting device (port %u) info: %s\n", 963 port_id, strerror(-ret)); 964 965 /* Get the interface default mac address */ 966 ret = rte_eth_macaddr_get(port_id, 967 (struct rte_ether_addr *)&conf.mac_addr); 968 if (ret != 0) 969 rte_exit(EXIT_FAILURE, 970 "Failed to get MAC address (port %u): %s\n", 971 port_id, rte_strerror(-ret)); 972 973 rte_eth_dev_get_mtu(port_id, &conf.mtu); 974 975 conf.min_mtu = dev_info.min_mtu; 976 conf.max_mtu = dev_info.max_mtu; 977 978 memset(&ops, 0, sizeof(ops)); 979 ops.port_id = port_id; 980 ops.change_mtu = kni_change_mtu; 981 ops.config_network_if = kni_config_network_interface; 982 ops.config_mac_address = kni_config_mac_address; 983 984 kni = rte_kni_alloc(pktmbuf_pool, &conf, &ops); 985 } else 986 kni = rte_kni_alloc(pktmbuf_pool, &conf, NULL); 987 988 if (!kni) 989 rte_exit(EXIT_FAILURE, "Fail to create kni for " 990 "port: %d\n", port_id); 991 params[port_id]->kni[i] = kni; 992 } 993 994 return 0; 995 } 996 997 static int 998 kni_free_kni(uint16_t port_id) 999 { 1000 uint8_t i; 1001 struct kni_port_params **p = kni_port_params_array; 1002 1003 if (port_id >= RTE_MAX_ETHPORTS || !p[port_id]) 1004 return -1; 1005 1006 for (i = 0; i < p[port_id]->nb_kni; i++) { 1007 if (rte_kni_release(p[port_id]->kni[i])) 1008 printf("Fail to release kni\n"); 1009 p[port_id]->kni[i] = NULL; 1010 } 1011 rte_eth_dev_stop(port_id); 1012 1013 return 0; 1014 } 1015 1016 /* Initialise ports/queues etc. and start main loop on each core */ 1017 int 1018 main(int argc, char** argv) 1019 { 1020 int ret; 1021 uint16_t nb_sys_ports, port; 1022 unsigned i; 1023 void *retval; 1024 pthread_t kni_link_tid; 1025 int pid; 1026 1027 /* Associate signal_hanlder function with USR signals */ 1028 signal(SIGUSR1, signal_handler); 1029 signal(SIGUSR2, signal_handler); 1030 signal(SIGRTMIN, signal_handler); 1031 signal(SIGINT, signal_handler); 1032 signal(SIGTERM, signal_handler); 1033 1034 /* Initialise EAL */ 1035 ret = rte_eal_init(argc, argv); 1036 if (ret < 0) 1037 rte_exit(EXIT_FAILURE, "Could not initialise EAL (%d)\n", ret); 1038 argc -= ret; 1039 argv += ret; 1040 1041 /* Parse application arguments (after the EAL ones) */ 1042 ret = parse_args(argc, argv); 1043 if (ret < 0) 1044 rte_exit(EXIT_FAILURE, "Could not parse input parameters\n"); 1045 1046 /* Create the mbuf pool */ 1047 pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 1048 MEMPOOL_CACHE_SZ, 0, MBUF_DATA_SZ, rte_socket_id()); 1049 if (pktmbuf_pool == NULL) { 1050 rte_exit(EXIT_FAILURE, "Could not initialise mbuf pool\n"); 1051 return -1; 1052 } 1053 1054 /* Get number of ports found in scan */ 1055 nb_sys_ports = rte_eth_dev_count_avail(); 1056 if (nb_sys_ports == 0) 1057 rte_exit(EXIT_FAILURE, "No supported Ethernet device found\n"); 1058 1059 /* Check if the configured port ID is valid */ 1060 for (i = 0; i < RTE_MAX_ETHPORTS; i++) 1061 if (kni_port_params_array[i] && !rte_eth_dev_is_valid_port(i)) 1062 rte_exit(EXIT_FAILURE, "Configured invalid " 1063 "port ID %u\n", i); 1064 1065 /* Initialize KNI subsystem */ 1066 init_kni(); 1067 1068 /* Initialise each port */ 1069 RTE_ETH_FOREACH_DEV(port) { 1070 /* Skip ports that are not enabled */ 1071 if (!(ports_mask & (1 << port))) 1072 continue; 1073 init_port(port); 1074 1075 if (port >= RTE_MAX_ETHPORTS) 1076 rte_exit(EXIT_FAILURE, "Can not use more than " 1077 "%d ports for kni\n", RTE_MAX_ETHPORTS); 1078 1079 kni_alloc(port); 1080 } 1081 check_all_ports_link_status(ports_mask); 1082 1083 pid = getpid(); 1084 RTE_LOG(INFO, APP, "========================\n"); 1085 RTE_LOG(INFO, APP, "KNI Running\n"); 1086 RTE_LOG(INFO, APP, "kill -SIGUSR1 %d\n", pid); 1087 RTE_LOG(INFO, APP, " Show KNI Statistics.\n"); 1088 RTE_LOG(INFO, APP, "kill -SIGUSR2 %d\n", pid); 1089 RTE_LOG(INFO, APP, " Zero KNI Statistics.\n"); 1090 RTE_LOG(INFO, APP, "========================\n"); 1091 fflush(stdout); 1092 1093 ret = rte_ctrl_thread_create(&kni_link_tid, 1094 "KNI link status check", NULL, 1095 monitor_all_ports_link_status, NULL); 1096 if (ret < 0) 1097 rte_exit(EXIT_FAILURE, 1098 "Could not create link status thread!\n"); 1099 1100 /* Launch per-lcore function on every lcore */ 1101 rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER); 1102 RTE_LCORE_FOREACH_SLAVE(i) { 1103 if (rte_eal_wait_lcore(i) < 0) 1104 return -1; 1105 } 1106 monitor_links = 0; 1107 pthread_join(kni_link_tid, &retval); 1108 1109 /* Release resources */ 1110 RTE_ETH_FOREACH_DEV(port) { 1111 if (!(ports_mask & (1 << port))) 1112 continue; 1113 kni_free_kni(port); 1114 } 1115 for (i = 0; i < RTE_MAX_ETHPORTS; i++) 1116 if (kni_port_params_array[i]) { 1117 rte_free(kni_port_params_array[i]); 1118 kni_port_params_array[i] = NULL; 1119 } 1120 1121 return 0; 1122 } 1123