examples/ip_fragmentation/main.c

   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 <sys/types.h>
  10 #include <sys/param.h>
  11 #include <string.h>
  12 #include <sys/queue.h>
  13 #include <stdarg.h>
  14 #include <errno.h>
  15 #include <getopt.h>
  16
  17 #include <rte_common.h>
  18 #include <rte_byteorder.h>
  19 #include <rte_log.h>
  20 #include <rte_memory.h>
  21 #include <rte_memcpy.h>
  22 #include <rte_eal.h>
  23 #include <rte_launch.h>
  24 #include <rte_atomic.h>
  25 #include <rte_cycles.h>
  26 #include <rte_prefetch.h>
  27 #include <rte_lcore.h>
  28 #include <rte_per_lcore.h>
  29 #include <rte_branch_prediction.h>
  30 #include <rte_interrupts.h>
  31 #include <rte_random.h>
  32 #include <rte_debug.h>
  33 #include <rte_ether.h>
  34 #include <rte_ethdev.h>
  35 #include <rte_mempool.h>
  36 #include <rte_mbuf.h>
  37 #include <rte_lpm.h>
  38 #include <rte_lpm6.h>
  39 #include <rte_ip.h>
  40 #include <rte_string_fns.h>
  41
  42 #include <rte_ip_frag.h>
  43
  44 #define RTE_LOGTYPE_IP_FRAG RTE_LOGTYPE_USER1
  45
  46 /* allow max jumbo frame 9.5 KB */
  47 #define JUMBO_FRAME_MAX_SIZE    0x2600
  48
  49 #define ROUNDUP_DIV(a, b)       (((a) + (b) - 1) / (b))
  50
  51 /*
  52  * Default byte size for the IPv6 Maximum Transfer Unit (MTU).
  53  * This value includes the size of IPv6 header.
  54  */
  55 #define IPV4_MTU_DEFAULT        ETHER_MTU
  56 #define IPV6_MTU_DEFAULT        ETHER_MTU
  57
  58 /*
  59  * Default payload in bytes for the IPv6 packet.
  60  */
  61 #define IPV4_DEFAULT_PAYLOAD    (IPV4_MTU_DEFAULT - sizeof(struct ipv4_hdr))
  62 #define IPV6_DEFAULT_PAYLOAD    (IPV6_MTU_DEFAULT - sizeof(struct ipv6_hdr))
  63
  64 /*
  65  * Max number of fragments per packet expected - defined by config file.
  66  */
  67 #define MAX_PACKET_FRAG RTE_LIBRTE_IP_FRAG_MAX_FRAG
  68
  69 #define NB_MBUF   8192
  70
  71 #define MAX_PKT_BURST   32
  72 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  73
  74 /* Configure how many packets ahead to prefetch, when reading packets */
  75 #define PREFETCH_OFFSET 3
  76
  77 /*
  78  * Configurable number of RX/TX ring descriptors
  79  */
  80 #define RTE_TEST_RX_DESC_DEFAULT 1024
  81 #define RTE_TEST_TX_DESC_DEFAULT 1024
  82 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  83 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  84
  85 /* ethernet addresses of ports */
  86 static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
  87
  88 #ifndef IPv4_BYTES
  89 #define IPv4_BYTES_FMT "%" PRIu8 ".%" PRIu8 ".%" PRIu8 ".%" PRIu8
  90 #define IPv4_BYTES(addr) \
  91                 (uint8_t) (((addr) >> 24) & 0xFF),\
  92                 (uint8_t) (((addr) >> 16) & 0xFF),\
  93                 (uint8_t) (((addr) >> 8) & 0xFF),\
  94                 (uint8_t) ((addr) & 0xFF)
  95 #endif
  96
  97 #ifndef IPv6_BYTES
  98 #define IPv6_BYTES_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"\
  99                        "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
 100 #define IPv6_BYTES(addr) \
 101         addr[0],  addr[1], addr[2],  addr[3], \
 102         addr[4],  addr[5], addr[6],  addr[7], \
 103         addr[8],  addr[9], addr[10], addr[11],\
 104         addr[12], addr[13],addr[14], addr[15]
 105 #endif
 106
 107 #define IPV6_ADDR_LEN 16
 108
 109 /* mask of enabled ports */
 110 static int enabled_port_mask = 0;
 111
 112 static int rx_queue_per_lcore = 1;
 113
 114 #define MBUF_TABLE_SIZE  (2 * MAX(MAX_PKT_BURST, MAX_PACKET_FRAG))
 115
 116 struct mbuf_table {
 117         uint16_t len;
 118         struct rte_mbuf *m_table[MBUF_TABLE_SIZE];
 119 };
 120
 121 struct rx_queue {
 122         struct rte_mempool *direct_pool;
 123         struct rte_mempool *indirect_pool;
 124         struct rte_lpm *lpm;
 125         struct rte_lpm6 *lpm6;
 126         uint16_t portid;
 127 };
 128
 129 #define MAX_RX_QUEUE_PER_LCORE 16
 130 #define MAX_TX_QUEUE_PER_PORT 16
 131 struct lcore_queue_conf {
 132         uint16_t n_rx_queue;
 133         uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
 134         struct rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 135         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 136 } __rte_cache_aligned;
 137 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 138
 139 static struct rte_eth_conf port_conf = {
 140         .rxmode = {
 141                 .max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
 142                 .split_hdr_size = 0,
 143                 .offloads = (DEV_RX_OFFLOAD_CHECKSUM |
 144                              DEV_RX_OFFLOAD_JUMBO_FRAME |
 145                              DEV_RX_OFFLOAD_CRC_STRIP),
 146         },
 147         .txmode = {
 148                 .mq_mode = ETH_MQ_TX_NONE,
 149                 .offloads = (DEV_TX_OFFLOAD_IPV4_CKSUM |
 150                              DEV_TX_OFFLOAD_MULTI_SEGS),
 151         },
 152 };
 153
 154 /*
 155  * IPv4 forwarding table
 156  */
 157 struct l3fwd_ipv4_route {
 158         uint32_t ip;
 159         uint8_t  depth;
 160         uint8_t  if_out;
 161 };
 162
 163 struct l3fwd_ipv4_route l3fwd_ipv4_route_array[] = {
 164                 {IPv4(100,10,0,0), 16, 0},
 165                 {IPv4(100,20,0,0), 16, 1},
 166                 {IPv4(100,30,0,0), 16, 2},
 167                 {IPv4(100,40,0,0), 16, 3},
 168                 {IPv4(100,50,0,0), 16, 4},
 169                 {IPv4(100,60,0,0), 16, 5},
 170                 {IPv4(100,70,0,0), 16, 6},
 171                 {IPv4(100,80,0,0), 16, 7},
 172 };
 173
 174 /*
 175  * IPv6 forwarding table
 176  */
 177
 178 struct l3fwd_ipv6_route {
 179         uint8_t ip[IPV6_ADDR_LEN];
 180         uint8_t depth;
 181         uint8_t if_out;
 182 };
 183
 184 static struct l3fwd_ipv6_route l3fwd_ipv6_route_array[] = {
 185         {{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 0},
 186         {{2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 1},
 187         {{3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 2},
 188         {{4,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 3},
 189         {{5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 4},
 190         {{6,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 5},
 191         {{7,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 6},
 192         {{8,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 7},
 193 };
 194
 195 #define LPM_MAX_RULES         1024
 196 #define LPM6_MAX_RULES         1024
 197 #define LPM6_NUMBER_TBL8S (1 << 16)
 198
 199 struct rte_lpm6_config lpm6_config = {
 200                 .max_rules = LPM6_MAX_RULES,
 201                 .number_tbl8s = LPM6_NUMBER_TBL8S,
 202                 .flags = 0
 203 };
 204
 205 static struct rte_mempool *socket_direct_pool[RTE_MAX_NUMA_NODES];
 206 static struct rte_mempool *socket_indirect_pool[RTE_MAX_NUMA_NODES];
 207 static struct rte_lpm *socket_lpm[RTE_MAX_NUMA_NODES];
 208 static struct rte_lpm6 *socket_lpm6[RTE_MAX_NUMA_NODES];
 209
 210 /* Send burst of packets on an output interface */
 211 static inline int
 212 send_burst(struct lcore_queue_conf *qconf, uint16_t n, uint16_t port)
 213 {
 214         struct rte_mbuf **m_table;
 215         int ret;
 216         uint16_t queueid;
 217
 218         queueid = qconf->tx_queue_id[port];
 219         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 220
 221         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 222         if (unlikely(ret < n)) {
 223                 do {
 224                         rte_pktmbuf_free(m_table[ret]);
 225                 } while (++ret < n);
 226         }
 227
 228         return 0;
 229 }
 230
 231 static inline void
 232 l3fwd_simple_forward(struct rte_mbuf *m, struct lcore_queue_conf *qconf,
 233                 uint8_t queueid, uint16_t port_in)
 234 {
 235         struct rx_queue *rxq;
 236         uint32_t i, len, next_hop;
 237         uint8_t ipv6;
 238         uint16_t port_out;
 239         int32_t len2;
 240
 241         ipv6 = 0;
 242         rxq = &qconf->rx_queue_list[queueid];
 243
 244         /* by default, send everything back to the source port */
 245         port_out = port_in;
 246
 247         /* Remove the Ethernet header and trailer from the input packet */
 248         rte_pktmbuf_adj(m, (uint16_t)sizeof(struct ether_hdr));
 249
 250         /* Build transmission burst */
 251         len = qconf->tx_mbufs[port_out].len;
 252
 253         /* if this is an IPv4 packet */
 254         if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
 255                 struct ipv4_hdr *ip_hdr;
 256                 uint32_t ip_dst;
 257                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 258                 ip_hdr = rte_pktmbuf_mtod(m, struct ipv4_hdr *);
 259                 ip_dst = rte_be_to_cpu_32(ip_hdr->dst_addr);
 260
 261                 /* Find destination port */
 262                 if (rte_lpm_lookup(rxq->lpm, ip_dst, &next_hop) == 0 &&
 263                                 (enabled_port_mask & 1 << next_hop) != 0) {
 264                         port_out = next_hop;
 265
 266                         /* Build transmission burst for new port */
 267                         len = qconf->tx_mbufs[port_out].len;
 268                 }
 269
 270                 /* if we don't need to do any fragmentation */
 271                 if (likely (IPV4_MTU_DEFAULT >= m->pkt_len)) {
 272                         qconf->tx_mbufs[port_out].m_table[len] = m;
 273                         len2 = 1;
 274                 } else {
 275                         len2 = rte_ipv4_fragment_packet(m,
 276                                 &qconf->tx_mbufs[port_out].m_table[len],
 277                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 278                                 IPV4_MTU_DEFAULT,
 279                                 rxq->direct_pool, rxq->indirect_pool);
 280
 281                         /* Free input packet */
 282                         rte_pktmbuf_free(m);
 283
 284                         /* If we fail to fragment the packet */
 285                         if (unlikely (len2 < 0))
 286                                 return;
 287                 }
 288         } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
 289                 /* if this is an IPv6 packet */
 290                 struct ipv6_hdr *ip_hdr;
 291
 292                 ipv6 = 1;
 293
 294                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 295                 ip_hdr = rte_pktmbuf_mtod(m, struct ipv6_hdr *);
 296
 297                 /* Find destination port */
 298                 if (rte_lpm6_lookup(rxq->lpm6, ip_hdr->dst_addr,
 299                                                 &next_hop) == 0 &&
 300                                 (enabled_port_mask & 1 << next_hop) != 0) {
 301                         port_out = next_hop;
 302
 303                         /* Build transmission burst for new port */
 304                         len = qconf->tx_mbufs[port_out].len;
 305                 }
 306
 307                 /* if we don't need to do any fragmentation */
 308                 if (likely (IPV6_MTU_DEFAULT >= m->pkt_len)) {
 309                         qconf->tx_mbufs[port_out].m_table[len] = m;
 310                         len2 = 1;
 311                 } else {
 312                         len2 = rte_ipv6_fragment_packet(m,
 313                                 &qconf->tx_mbufs[port_out].m_table[len],
 314                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 315                                 IPV6_MTU_DEFAULT,
 316                                 rxq->direct_pool, rxq->indirect_pool);
 317
 318                         /* Free input packet */
 319                         rte_pktmbuf_free(m);
 320
 321                         /* If we fail to fragment the packet */
 322                         if (unlikely (len2 < 0))
 323                                 return;
 324                 }
 325         }
 326         /* else, just forward the packet */
 327         else {
 328                 qconf->tx_mbufs[port_out].m_table[len] = m;
 329                 len2 = 1;
 330         }
 331
 332         for (i = len; i < len + len2; i ++) {
 333                 void *d_addr_bytes;
 334
 335                 m = qconf->tx_mbufs[port_out].m_table[i];
 336                 struct ether_hdr *eth_hdr = (struct ether_hdr *)
 337                         rte_pktmbuf_prepend(m, (uint16_t)sizeof(struct ether_hdr));
 338                 if (eth_hdr == NULL) {
 339                         rte_panic("No headroom in mbuf.\n");
 340                 }
 341
 342                 m->l2_len = sizeof(struct ether_hdr);
 343
 344                 /* 02:00:00:00:00:xx */
 345                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 346                 *((uint64_t *)d_addr_bytes) = 0x000000000002 + ((uint64_t)port_out << 40);
 347
 348                 /* src addr */
 349                 ether_addr_copy(&ports_eth_addr[port_out], &eth_hdr->s_addr);
 350                 if (ipv6)
 351                         eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv6);
 352                 else
 353                         eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv4);
 354         }
 355
 356         len += len2;
 357
 358         if (likely(len < MAX_PKT_BURST)) {
 359                 qconf->tx_mbufs[port_out].len = (uint16_t)len;
 360                 return;
 361         }
 362
 363         /* Transmit packets */
 364         send_burst(qconf, (uint16_t)len, port_out);
 365         qconf->tx_mbufs[port_out].len = 0;
 366 }
 367
 368 /* main processing loop */
 369 static int
 370 main_loop(__attribute__((unused)) void *dummy)
 371 {
 372         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 373         unsigned lcore_id;
 374         uint64_t prev_tsc, diff_tsc, cur_tsc;
 375         int i, j, nb_rx;
 376         uint16_t portid;
 377         struct lcore_queue_conf *qconf;
 378         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 379
 380         prev_tsc = 0;
 381
 382         lcore_id = rte_lcore_id();
 383         qconf = &lcore_queue_conf[lcore_id];
 384
 385         if (qconf->n_rx_queue == 0) {
 386                 RTE_LOG(INFO, IP_FRAG, "lcore %u has nothing to do\n", lcore_id);
 387                 return 0;
 388         }
 389
 390         RTE_LOG(INFO, IP_FRAG, "entering main loop on lcore %u\n", lcore_id);
 391
 392         for (i = 0; i < qconf->n_rx_queue; i++) {
 393
 394                 portid = qconf->rx_queue_list[i].portid;
 395                 RTE_LOG(INFO, IP_FRAG, " -- lcoreid=%u portid=%d\n", lcore_id,
 396                                 portid);
 397         }
 398
 399         while (1) {
 400
 401                 cur_tsc = rte_rdtsc();
 402
 403                 /*
 404                  * TX burst queue drain
 405                  */
 406                 diff_tsc = cur_tsc - prev_tsc;
 407                 if (unlikely(diff_tsc > drain_tsc)) {
 408
 409                         /*
 410                          * This could be optimized (use queueid instead of
 411                          * portid), but it is not called so often
 412                          */
 413                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 414                                 if (qconf->tx_mbufs[portid].len == 0)
 415                                         continue;
 416                                 send_burst(&lcore_queue_conf[lcore_id],
 417                                            qconf->tx_mbufs[portid].len,
 418                                            portid);
 419                                 qconf->tx_mbufs[portid].len = 0;
 420                         }
 421
 422                         prev_tsc = cur_tsc;
 423                 }
 424
 425                 /*
 426                  * Read packet from RX queues
 427                  */
 428                 for (i = 0; i < qconf->n_rx_queue; i++) {
 429
 430                         portid = qconf->rx_queue_list[i].portid;
 431                         nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 432                                                  MAX_PKT_BURST);
 433
 434                         /* Prefetch first packets */
 435                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 436                                 rte_prefetch0(rte_pktmbuf_mtod(
 437                                                 pkts_burst[j], void *));
 438                         }
 439
 440                         /* Prefetch and forward already prefetched packets */
 441                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 442                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 443                                                 j + PREFETCH_OFFSET], void *));
 444                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 445                         }
 446
 447                         /* Forward remaining prefetched packets */
 448                         for (; j < nb_rx; j++) {
 449                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 450                         }
 451                 }
 452         }
 453 }
 454
 455 /* display usage */
 456 static void
 457 print_usage(const char *prgname)
 458 {
 459         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 460                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 461                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n",
 462                prgname);
 463 }
 464
 465 static int
 466 parse_portmask(const char *portmask)
 467 {
 468         char *end = NULL;
 469         unsigned long pm;
 470
 471         /* parse hexadecimal string */
 472         pm = strtoul(portmask, &end, 16);
 473         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 474                 return -1;
 475
 476         if (pm == 0)
 477                 return -1;
 478
 479         return pm;
 480 }
 481
 482 static int
 483 parse_nqueue(const char *q_arg)
 484 {
 485         char *end = NULL;
 486         unsigned long n;
 487
 488         /* parse hexadecimal string */
 489         n = strtoul(q_arg, &end, 10);
 490         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 491                 return -1;
 492         if (n == 0)
 493                 return -1;
 494         if (n >= MAX_RX_QUEUE_PER_LCORE)
 495                 return -1;
 496
 497         return n;
 498 }
 499
 500 /* Parse the argument given in the command line of the application */
 501 static int
 502 parse_args(int argc, char **argv)
 503 {
 504         int opt, ret;
 505         char **argvopt;
 506         int option_index;
 507         char *prgname = argv[0];
 508         static struct option lgopts[] = {
 509                 {NULL, 0, 0, 0}
 510         };
 511
 512         argvopt = argv;
 513
 514         while ((opt = getopt_long(argc, argvopt, "p:q:",
 515                                   lgopts, &option_index)) != EOF) {
 516
 517                 switch (opt) {
 518                 /* portmask */
 519                 case 'p':
 520                         enabled_port_mask = parse_portmask(optarg);
 521                         if (enabled_port_mask < 0) {
 522                                 printf("invalid portmask\n");
 523                                 print_usage(prgname);
 524                                 return -1;
 525                         }
 526                         break;
 527
 528                 /* nqueue */
 529                 case 'q':
 530                         rx_queue_per_lcore = parse_nqueue(optarg);
 531                         if (rx_queue_per_lcore < 0) {
 532                                 printf("invalid queue number\n");
 533                                 print_usage(prgname);
 534                                 return -1;
 535                         }
 536                         break;
 537
 538                 /* long options */
 539                 case 0:
 540                         print_usage(prgname);
 541                         return -1;
 542
 543                 default:
 544                         print_usage(prgname);
 545                         return -1;
 546                 }
 547         }
 548
 549         if (enabled_port_mask == 0) {
 550                 printf("portmask not specified\n");
 551                 print_usage(prgname);
 552                 return -1;
 553         }
 554
 555         if (optind >= 0)
 556                 argv[optind-1] = prgname;
 557
 558         ret = optind-1;
 559         optind = 1; /* reset getopt lib */
 560         return ret;
 561 }
 562
 563 static void
 564 print_ethaddr(const char *name, struct ether_addr *eth_addr)
 565 {
 566         char buf[ETHER_ADDR_FMT_SIZE];
 567         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
 568         printf("%s%s", name, buf);
 569 }
 570
 571 /* Check the link status of all ports in up to 9s, and print them finally */
 572 static void
 573 check_all_ports_link_status(uint32_t port_mask)
 574 {
 575 #define CHECK_INTERVAL 100 /* 100ms */
 576 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 577         uint16_t portid;
 578         uint8_t count, all_ports_up, print_flag = 0;
 579         struct rte_eth_link link;
 580
 581         printf("\nChecking link status");
 582         fflush(stdout);
 583         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 584                 all_ports_up = 1;
 585                 RTE_ETH_FOREACH_DEV(portid) {
 586                         if ((port_mask & (1 << portid)) == 0)
 587                                 continue;
 588                         memset(&link, 0, sizeof(link));
 589                         rte_eth_link_get_nowait(portid, &link);
 590                         /* print link status if flag set */
 591                         if (print_flag == 1) {
 592                                 if (link.link_status)
 593                                         printf(
 594                                         "Port%d Link Up .Speed %u Mbps - %s\n",
 595                                                 portid, link.link_speed,
 596                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 597                                         ("full-duplex") : ("half-duplex\n"));
 598                                 else
 599                                         printf("Port %d Link Down\n", portid);
 600                                 continue;
 601                         }
 602                         /* clear all_ports_up flag if any link down */
 603                         if (link.link_status == ETH_LINK_DOWN) {
 604                                 all_ports_up = 0;
 605                                 break;
 606                         }
 607                 }
 608                 /* after finally printing all link status, get out */
 609                 if (print_flag == 1)
 610                         break;
 611
 612                 if (all_ports_up == 0) {
 613                         printf(".");
 614                         fflush(stdout);
 615                         rte_delay_ms(CHECK_INTERVAL);
 616                 }
 617
 618                 /* set the print_flag if all ports up or timeout */
 619                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 620                         print_flag = 1;
 621                         printf("\ndone\n");
 622                 }
 623         }
 624 }
 625
 626 /* Check L3 packet type detection capablity of the NIC port */
 627 static int
 628 check_ptype(int portid)
 629 {
 630         int i, ret;
 631         int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
 632         uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
 633
 634         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
 635         if (ret <= 0)
 636                 return 0;
 637
 638         uint32_t ptypes[ret];
 639
 640         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
 641         for (i = 0; i < ret; ++i) {
 642                 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
 643                         ptype_l3_ipv4 = 1;
 644                 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
 645                         ptype_l3_ipv6 = 1;
 646         }
 647
 648         if (ptype_l3_ipv4 == 0)
 649                 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
 650
 651         if (ptype_l3_ipv6 == 0)
 652                 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
 653
 654         if (ptype_l3_ipv4 && ptype_l3_ipv6)
 655                 return 1;
 656
 657         return 0;
 658
 659 }
 660
 661 /* Parse packet type of a packet by SW */
 662 static inline void
 663 parse_ptype(struct rte_mbuf *m)
 664 {
 665         struct ether_hdr *eth_hdr;
 666         uint32_t packet_type = RTE_PTYPE_UNKNOWN;
 667         uint16_t ether_type;
 668
 669         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 670         ether_type = eth_hdr->ether_type;
 671         if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4))
 672                 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 673         else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6))
 674                 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 675
 676         m->packet_type = packet_type;
 677 }
 678
 679 /* callback function to detect packet type for a queue of a port */
 680 static uint16_t
 681 cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
 682                    struct rte_mbuf *pkts[], uint16_t nb_pkts,
 683                    uint16_t max_pkts __rte_unused,
 684                    void *user_param __rte_unused)
 685 {
 686         uint16_t i;
 687
 688         for (i = 0; i < nb_pkts; ++i)
 689                 parse_ptype(pkts[i]);
 690
 691         return nb_pkts;
 692 }
 693
 694 static int
 695 init_routing_table(void)
 696 {
 697         struct rte_lpm *lpm;
 698         struct rte_lpm6 *lpm6;
 699         int socket, ret;
 700         unsigned i;
 701
 702         for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
 703                 if (socket_lpm[socket]) {
 704                         lpm = socket_lpm[socket];
 705                         /* populate the LPM table */
 706                         for (i = 0; i < RTE_DIM(l3fwd_ipv4_route_array); i++) {
 707                                 ret = rte_lpm_add(lpm,
 708                                         l3fwd_ipv4_route_array[i].ip,
 709                                         l3fwd_ipv4_route_array[i].depth,
 710                                         l3fwd_ipv4_route_array[i].if_out);
 711
 712                                 if (ret < 0) {
 713                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 714                                                 "LPM table\n", i);
 715                                         return -1;
 716                                 }
 717
 718                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv4_BYTES_FMT
 719                                                 "/%d (port %d)\n",
 720                                         socket,
 721                                         IPv4_BYTES(l3fwd_ipv4_route_array[i].ip),
 722                                         l3fwd_ipv4_route_array[i].depth,
 723                                         l3fwd_ipv4_route_array[i].if_out);
 724                         }
 725                 }
 726
 727                 if (socket_lpm6[socket]) {
 728                         lpm6 = socket_lpm6[socket];
 729                         /* populate the LPM6 table */
 730                         for (i = 0; i < RTE_DIM(l3fwd_ipv6_route_array); i++) {
 731                                 ret = rte_lpm6_add(lpm6,
 732                                         l3fwd_ipv6_route_array[i].ip,
 733                                         l3fwd_ipv6_route_array[i].depth,
 734                                         l3fwd_ipv6_route_array[i].if_out);
 735
 736                                 if (ret < 0) {
 737                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 738                                                 "LPM6 table\n", i);
 739                                         return -1;
 740                                 }
 741
 742                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv6_BYTES_FMT
 743                                                 "/%d (port %d)\n",
 744                                         socket,
 745                                         IPv6_BYTES(l3fwd_ipv6_route_array[i].ip),
 746                                         l3fwd_ipv6_route_array[i].depth,
 747                                         l3fwd_ipv6_route_array[i].if_out);
 748                         }
 749                 }
 750         }
 751         return 0;
 752 }
 753
 754 static int
 755 init_mem(void)
 756 {
 757         char buf[PATH_MAX];
 758         struct rte_mempool *mp;
 759         struct rte_lpm *lpm;
 760         struct rte_lpm6 *lpm6;
 761         struct rte_lpm_config lpm_config;
 762         int socket;
 763         unsigned lcore_id;
 764
 765         /* traverse through lcores and initialize structures on each socket */
 766
 767         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 768
 769                 if (rte_lcore_is_enabled(lcore_id) == 0)
 770                         continue;
 771
 772                 socket = rte_lcore_to_socket_id(lcore_id);
 773
 774                 if (socket == SOCKET_ID_ANY)
 775                         socket = 0;
 776
 777                 if (socket_direct_pool[socket] == NULL) {
 778                         RTE_LOG(INFO, IP_FRAG, "Creating direct mempool on socket %i\n",
 779                                         socket);
 780                         snprintf(buf, sizeof(buf), "pool_direct_%i", socket);
 781
 782                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32,
 783                                 0, RTE_MBUF_DEFAULT_BUF_SIZE, socket);
 784                         if (mp == NULL) {
 785                                 RTE_LOG(ERR, IP_FRAG, "Cannot create direct mempool\n");
 786                                 return -1;
 787                         }
 788                         socket_direct_pool[socket] = mp;
 789                 }
 790
 791                 if (socket_indirect_pool[socket] == NULL) {
 792                         RTE_LOG(INFO, IP_FRAG, "Creating indirect mempool on socket %i\n",
 793                                         socket);
 794                         snprintf(buf, sizeof(buf), "pool_indirect_%i", socket);
 795
 796                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32, 0, 0,
 797                                 socket);
 798                         if (mp == NULL) {
 799                                 RTE_LOG(ERR, IP_FRAG, "Cannot create indirect mempool\n");
 800                                 return -1;
 801                         }
 802                         socket_indirect_pool[socket] = mp;
 803                 }
 804
 805                 if (socket_lpm[socket] == NULL) {
 806                         RTE_LOG(INFO, IP_FRAG, "Creating LPM table on socket %i\n", socket);
 807                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 808
 809                         lpm_config.max_rules = LPM_MAX_RULES;
 810                         lpm_config.number_tbl8s = 256;
 811                         lpm_config.flags = 0;
 812
 813                         lpm = rte_lpm_create(buf, socket, &lpm_config);
 814                         if (lpm == NULL) {
 815                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 816                                 return -1;
 817                         }
 818                         socket_lpm[socket] = lpm;
 819                 }
 820
 821                 if (socket_lpm6[socket] == NULL) {
 822                         RTE_LOG(INFO, IP_FRAG, "Creating LPM6 table on socket %i\n", socket);
 823                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 824
 825                         lpm6 = rte_lpm6_create(buf, socket, &lpm6_config);
 826                         if (lpm6 == NULL) {
 827                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 828                                 return -1;
 829                         }
 830                         socket_lpm6[socket] = lpm6;
 831                 }
 832         }
 833
 834         return 0;
 835 }
 836
 837 int
 838 main(int argc, char **argv)
 839 {
 840         struct lcore_queue_conf *qconf;
 841         struct rte_eth_dev_info dev_info;
 842         struct rte_eth_txconf *txconf;
 843         struct rx_queue *rxq;
 844         int socket, ret;
 845         uint16_t nb_ports;
 846         uint16_t queueid = 0;
 847         unsigned lcore_id = 0, rx_lcore_id = 0;
 848         uint32_t n_tx_queue, nb_lcores;
 849         uint16_t portid;
 850
 851         /* init EAL */
 852         ret = rte_eal_init(argc, argv);
 853         if (ret < 0)
 854                 rte_exit(EXIT_FAILURE, "rte_eal_init failed");
 855         argc -= ret;
 856         argv += ret;
 857
 858         /* parse application arguments (after the EAL ones) */
 859         ret = parse_args(argc, argv);
 860         if (ret < 0)
 861                 rte_exit(EXIT_FAILURE, "Invalid arguments");
 862
 863         nb_ports = rte_eth_dev_count_avail();
 864         if (nb_ports == 0)
 865                 rte_exit(EXIT_FAILURE, "No ports found!\n");
 866
 867         nb_lcores = rte_lcore_count();
 868
 869         /* initialize structures (mempools, lpm etc.) */
 870         if (init_mem() < 0)
 871                 rte_panic("Cannot initialize memory structures!\n");
 872
 873         /* check if portmask has non-existent ports */
 874         if (enabled_port_mask & ~(RTE_LEN2MASK(nb_ports, unsigned)))
 875                 rte_exit(EXIT_FAILURE, "Non-existent ports in portmask!\n");
 876
 877         /* initialize all ports */
 878         RTE_ETH_FOREACH_DEV(portid) {
 879                 struct rte_eth_conf local_port_conf = port_conf;
 880                 struct rte_eth_rxconf rxq_conf;
 881
 882                 /* skip ports that are not enabled */
 883                 if ((enabled_port_mask & (1 << portid)) == 0) {
 884                         printf("Skipping disabled port %d\n", portid);
 885                         continue;
 886                 }
 887
 888                 qconf = &lcore_queue_conf[rx_lcore_id];
 889
 890                 /* limit the frame size to the maximum supported by NIC */
 891                 rte_eth_dev_info_get(portid, &dev_info);
 892                 local_port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
 893                     dev_info.max_rx_pktlen,
 894                     local_port_conf.rxmode.max_rx_pkt_len);
 895
 896                 /* get the lcore_id for this port */
 897                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 898                        qconf->n_rx_queue == (unsigned)rx_queue_per_lcore) {
 899
 900                         rx_lcore_id ++;
 901                         if (rx_lcore_id >= RTE_MAX_LCORE)
 902                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 903
 904                         qconf = &lcore_queue_conf[rx_lcore_id];
 905                 }
 906
 907                 socket = (int) rte_lcore_to_socket_id(rx_lcore_id);
 908                 if (socket == SOCKET_ID_ANY)
 909                         socket = 0;
 910
 911                 rxq = &qconf->rx_queue_list[qconf->n_rx_queue];
 912                 rxq->portid = portid;
 913                 rxq->direct_pool = socket_direct_pool[socket];
 914                 rxq->indirect_pool = socket_indirect_pool[socket];
 915                 rxq->lpm = socket_lpm[socket];
 916                 rxq->lpm6 = socket_lpm6[socket];
 917                 qconf->n_rx_queue++;
 918
 919                 /* init port */
 920                 printf("Initializing port %d on lcore %u...", portid,
 921                        rx_lcore_id);
 922                 fflush(stdout);
 923
 924                 n_tx_queue = nb_lcores;
 925                 if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
 926                         n_tx_queue = MAX_TX_QUEUE_PER_PORT;
 927                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 928                         local_port_conf.txmode.offloads |=
 929                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 930                 ret = rte_eth_dev_configure(portid, 1, (uint16_t)n_tx_queue,
 931                                             &local_port_conf);
 932                 if (ret < 0) {
 933                         printf("\n");
 934                         rte_exit(EXIT_FAILURE, "Cannot configure device: "
 935                                 "err=%d, port=%d\n",
 936                                 ret, portid);
 937                 }
 938
 939                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 940                                             &nb_txd);
 941                 if (ret < 0) {
 942                         printf("\n");
 943                         rte_exit(EXIT_FAILURE, "Cannot adjust number of "
 944                                 "descriptors: err=%d, port=%d\n", ret, portid);
 945                 }
 946
 947                 /* init one RX queue */
 948                 rxq_conf = dev_info.default_rxconf;
 949                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 950                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 951                                              socket, &rxq_conf,
 952                                              socket_direct_pool[socket]);
 953                 if (ret < 0) {
 954                         printf("\n");
 955                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: "
 956                                 "err=%d, port=%d\n",
 957                                 ret, portid);
 958                 }
 959
 960                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
 961                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
 962                 printf("\n");
 963
 964                 /* init one TX queue per couple (lcore,port) */
 965                 queueid = 0;
 966                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 967                         if (rte_lcore_is_enabled(lcore_id) == 0)
 968                                 continue;
 969
 970                         socket = (int) rte_lcore_to_socket_id(lcore_id);
 971                         printf("txq=%u,%d ", lcore_id, queueid);
 972                         fflush(stdout);
 973
 974                         txconf = &dev_info.default_txconf;
 975                         txconf->offloads = local_port_conf.txmode.offloads;
 976                         ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
 977                                                      socket, txconf);
 978                         if (ret < 0) {
 979                                 printf("\n");
 980                                 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: "
 981                                         "err=%d, port=%d\n", ret, portid);
 982                         }
 983
 984                         qconf = &lcore_queue_conf[lcore_id];
 985                         qconf->tx_queue_id[portid] = queueid;
 986                         queueid++;
 987                 }
 988
 989                 printf("\n");
 990         }
 991
 992         printf("\n");
 993
 994         /* start ports */
 995         RTE_ETH_FOREACH_DEV(portid) {
 996                 if ((enabled_port_mask & (1 << portid)) == 0) {
 997                         continue;
 998                 }
 999                 /* Start device */
1000                 ret = rte_eth_dev_start(portid);
1001                 if (ret < 0)
1002                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
1003                                 ret, portid);
1004
1005                 rte_eth_promiscuous_enable(portid);
1006
1007                 if (check_ptype(portid) == 0) {
1008                         rte_eth_add_rx_callback(portid, 0, cb_parse_ptype, NULL);
1009                         printf("Add Rx callback function to detect L3 packet type by SW :"
1010                                 " port = %d\n", portid);
1011                 }
1012         }
1013
1014         if (init_routing_table() < 0)
1015                 rte_exit(EXIT_FAILURE, "Cannot init routing table\n");
1016
1017         check_all_ports_link_status(enabled_port_mask);
1018
1019         /* launch per-lcore init on every lcore */
1020         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1021         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1022                 if (rte_eal_wait_lcore(lcore_id) < 0)
1023                         return -1;
1024         }
1025
1026         return 0;
1027 }