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                 .ignore_offload_bitfield = 1,
 144                 .offloads = (DEV_RX_OFFLOAD_CHECKSUM |
 145                              DEV_RX_OFFLOAD_JUMBO_FRAME |
 146                              DEV_RX_OFFLOAD_CRC_STRIP),
 147         },
 148         .txmode = {
 149                 .mq_mode = ETH_MQ_TX_NONE,
 150                 .offloads = (DEV_TX_OFFLOAD_IPV4_CKSUM |
 151                              DEV_TX_OFFLOAD_MULTI_SEGS),
 152         },
 153 };
 154
 155 /*
 156  * IPv4 forwarding table
 157  */
 158 struct l3fwd_ipv4_route {
 159         uint32_t ip;
 160         uint8_t  depth;
 161         uint8_t  if_out;
 162 };
 163
 164 struct l3fwd_ipv4_route l3fwd_ipv4_route_array[] = {
 165                 {IPv4(100,10,0,0), 16, 0},
 166                 {IPv4(100,20,0,0), 16, 1},
 167                 {IPv4(100,30,0,0), 16, 2},
 168                 {IPv4(100,40,0,0), 16, 3},
 169                 {IPv4(100,50,0,0), 16, 4},
 170                 {IPv4(100,60,0,0), 16, 5},
 171                 {IPv4(100,70,0,0), 16, 6},
 172                 {IPv4(100,80,0,0), 16, 7},
 173 };
 174
 175 /*
 176  * IPv6 forwarding table
 177  */
 178
 179 struct l3fwd_ipv6_route {
 180         uint8_t ip[IPV6_ADDR_LEN];
 181         uint8_t depth;
 182         uint8_t if_out;
 183 };
 184
 185 static struct l3fwd_ipv6_route l3fwd_ipv6_route_array[] = {
 186         {{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 0},
 187         {{2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 1},
 188         {{3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 2},
 189         {{4,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 3},
 190         {{5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 4},
 191         {{6,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 5},
 192         {{7,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 6},
 193         {{8,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 7},
 194 };
 195
 196 #define LPM_MAX_RULES         1024
 197 #define LPM6_MAX_RULES         1024
 198 #define LPM6_NUMBER_TBL8S (1 << 16)
 199
 200 struct rte_lpm6_config lpm6_config = {
 201                 .max_rules = LPM6_MAX_RULES,
 202                 .number_tbl8s = LPM6_NUMBER_TBL8S,
 203                 .flags = 0
 204 };
 205
 206 static struct rte_mempool *socket_direct_pool[RTE_MAX_NUMA_NODES];
 207 static struct rte_mempool *socket_indirect_pool[RTE_MAX_NUMA_NODES];
 208 static struct rte_lpm *socket_lpm[RTE_MAX_NUMA_NODES];
 209 static struct rte_lpm6 *socket_lpm6[RTE_MAX_NUMA_NODES];
 210
 211 /* Send burst of packets on an output interface */
 212 static inline int
 213 send_burst(struct lcore_queue_conf *qconf, uint16_t n, uint16_t port)
 214 {
 215         struct rte_mbuf **m_table;
 216         int ret;
 217         uint16_t queueid;
 218
 219         queueid = qconf->tx_queue_id[port];
 220         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 221
 222         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 223         if (unlikely(ret < n)) {
 224                 do {
 225                         rte_pktmbuf_free(m_table[ret]);
 226                 } while (++ret < n);
 227         }
 228
 229         return 0;
 230 }
 231
 232 static inline void
 233 l3fwd_simple_forward(struct rte_mbuf *m, struct lcore_queue_conf *qconf,
 234                 uint8_t queueid, uint16_t port_in)
 235 {
 236         struct rx_queue *rxq;
 237         uint32_t i, len, next_hop;
 238         uint8_t ipv6;
 239         uint16_t port_out;
 240         int32_t len2;
 241
 242         ipv6 = 0;
 243         rxq = &qconf->rx_queue_list[queueid];
 244
 245         /* by default, send everything back to the source port */
 246         port_out = port_in;
 247
 248         /* Remove the Ethernet header and trailer from the input packet */
 249         rte_pktmbuf_adj(m, (uint16_t)sizeof(struct ether_hdr));
 250
 251         /* Build transmission burst */
 252         len = qconf->tx_mbufs[port_out].len;
 253
 254         /* if this is an IPv4 packet */
 255         if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
 256                 struct ipv4_hdr *ip_hdr;
 257                 uint32_t ip_dst;
 258                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 259                 ip_hdr = rte_pktmbuf_mtod(m, struct ipv4_hdr *);
 260                 ip_dst = rte_be_to_cpu_32(ip_hdr->dst_addr);
 261
 262                 /* Find destination port */
 263                 if (rte_lpm_lookup(rxq->lpm, ip_dst, &next_hop) == 0 &&
 264                                 (enabled_port_mask & 1 << next_hop) != 0) {
 265                         port_out = next_hop;
 266
 267                         /* Build transmission burst for new port */
 268                         len = qconf->tx_mbufs[port_out].len;
 269                 }
 270
 271                 /* if we don't need to do any fragmentation */
 272                 if (likely (IPV4_MTU_DEFAULT >= m->pkt_len)) {
 273                         qconf->tx_mbufs[port_out].m_table[len] = m;
 274                         len2 = 1;
 275                 } else {
 276                         len2 = rte_ipv4_fragment_packet(m,
 277                                 &qconf->tx_mbufs[port_out].m_table[len],
 278                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 279                                 IPV4_MTU_DEFAULT,
 280                                 rxq->direct_pool, rxq->indirect_pool);
 281
 282                         /* Free input packet */
 283                         rte_pktmbuf_free(m);
 284
 285                         /* If we fail to fragment the packet */
 286                         if (unlikely (len2 < 0))
 287                                 return;
 288                 }
 289         } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
 290                 /* if this is an IPv6 packet */
 291                 struct ipv6_hdr *ip_hdr;
 292
 293                 ipv6 = 1;
 294
 295                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 296                 ip_hdr = rte_pktmbuf_mtod(m, struct ipv6_hdr *);
 297
 298                 /* Find destination port */
 299                 if (rte_lpm6_lookup(rxq->lpm6, ip_hdr->dst_addr,
 300                                                 &next_hop) == 0 &&
 301                                 (enabled_port_mask & 1 << next_hop) != 0) {
 302                         port_out = next_hop;
 303
 304                         /* Build transmission burst for new port */
 305                         len = qconf->tx_mbufs[port_out].len;
 306                 }
 307
 308                 /* if we don't need to do any fragmentation */
 309                 if (likely (IPV6_MTU_DEFAULT >= m->pkt_len)) {
 310                         qconf->tx_mbufs[port_out].m_table[len] = m;
 311                         len2 = 1;
 312                 } else {
 313                         len2 = rte_ipv6_fragment_packet(m,
 314                                 &qconf->tx_mbufs[port_out].m_table[len],
 315                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 316                                 IPV6_MTU_DEFAULT,
 317                                 rxq->direct_pool, rxq->indirect_pool);
 318
 319                         /* Free input packet */
 320                         rte_pktmbuf_free(m);
 321
 322                         /* If we fail to fragment the packet */
 323                         if (unlikely (len2 < 0))
 324                                 return;
 325                 }
 326         }
 327         /* else, just forward the packet */
 328         else {
 329                 qconf->tx_mbufs[port_out].m_table[len] = m;
 330                 len2 = 1;
 331         }
 332
 333         for (i = len; i < len + len2; i ++) {
 334                 void *d_addr_bytes;
 335
 336                 m = qconf->tx_mbufs[port_out].m_table[i];
 337                 struct ether_hdr *eth_hdr = (struct ether_hdr *)
 338                         rte_pktmbuf_prepend(m, (uint16_t)sizeof(struct ether_hdr));
 339                 if (eth_hdr == NULL) {
 340                         rte_panic("No headroom in mbuf.\n");
 341                 }
 342
 343                 m->l2_len = sizeof(struct ether_hdr);
 344
 345                 /* 02:00:00:00:00:xx */
 346                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 347                 *((uint64_t *)d_addr_bytes) = 0x000000000002 + ((uint64_t)port_out << 40);
 348
 349                 /* src addr */
 350                 ether_addr_copy(&ports_eth_addr[port_out], &eth_hdr->s_addr);
 351                 if (ipv6)
 352                         eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv6);
 353                 else
 354                         eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv4);
 355         }
 356
 357         len += len2;
 358
 359         if (likely(len < MAX_PKT_BURST)) {
 360                 qconf->tx_mbufs[port_out].len = (uint16_t)len;
 361                 return;
 362         }
 363
 364         /* Transmit packets */
 365         send_burst(qconf, (uint16_t)len, port_out);
 366         qconf->tx_mbufs[port_out].len = 0;
 367 }
 368
 369 /* main processing loop */
 370 static int
 371 main_loop(__attribute__((unused)) void *dummy)
 372 {
 373         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 374         unsigned lcore_id;
 375         uint64_t prev_tsc, diff_tsc, cur_tsc;
 376         int i, j, nb_rx;
 377         uint16_t portid;
 378         struct lcore_queue_conf *qconf;
 379         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 380
 381         prev_tsc = 0;
 382
 383         lcore_id = rte_lcore_id();
 384         qconf = &lcore_queue_conf[lcore_id];
 385
 386         if (qconf->n_rx_queue == 0) {
 387                 RTE_LOG(INFO, IP_FRAG, "lcore %u has nothing to do\n", lcore_id);
 388                 return 0;
 389         }
 390
 391         RTE_LOG(INFO, IP_FRAG, "entering main loop on lcore %u\n", lcore_id);
 392
 393         for (i = 0; i < qconf->n_rx_queue; i++) {
 394
 395                 portid = qconf->rx_queue_list[i].portid;
 396                 RTE_LOG(INFO, IP_FRAG, " -- lcoreid=%u portid=%d\n", lcore_id,
 397                                 portid);
 398         }
 399
 400         while (1) {
 401
 402                 cur_tsc = rte_rdtsc();
 403
 404                 /*
 405                  * TX burst queue drain
 406                  */
 407                 diff_tsc = cur_tsc - prev_tsc;
 408                 if (unlikely(diff_tsc > drain_tsc)) {
 409
 410                         /*
 411                          * This could be optimized (use queueid instead of
 412                          * portid), but it is not called so often
 413                          */
 414                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 415                                 if (qconf->tx_mbufs[portid].len == 0)
 416                                         continue;
 417                                 send_burst(&lcore_queue_conf[lcore_id],
 418                                            qconf->tx_mbufs[portid].len,
 419                                            portid);
 420                                 qconf->tx_mbufs[portid].len = 0;
 421                         }
 422
 423                         prev_tsc = cur_tsc;
 424                 }
 425
 426                 /*
 427                  * Read packet from RX queues
 428                  */
 429                 for (i = 0; i < qconf->n_rx_queue; i++) {
 430
 431                         portid = qconf->rx_queue_list[i].portid;
 432                         nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 433                                                  MAX_PKT_BURST);
 434
 435                         /* Prefetch first packets */
 436                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 437                                 rte_prefetch0(rte_pktmbuf_mtod(
 438                                                 pkts_burst[j], void *));
 439                         }
 440
 441                         /* Prefetch and forward already prefetched packets */
 442                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 443                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 444                                                 j + PREFETCH_OFFSET], void *));
 445                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 446                         }
 447
 448                         /* Forward remaining prefetched packets */
 449                         for (; j < nb_rx; j++) {
 450                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 451                         }
 452                 }
 453         }
 454 }
 455
 456 /* display usage */
 457 static void
 458 print_usage(const char *prgname)
 459 {
 460         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 461                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 462                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n",
 463                prgname);
 464 }
 465
 466 static int
 467 parse_portmask(const char *portmask)
 468 {
 469         char *end = NULL;
 470         unsigned long pm;
 471
 472         /* parse hexadecimal string */
 473         pm = strtoul(portmask, &end, 16);
 474         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 475                 return -1;
 476
 477         if (pm == 0)
 478                 return -1;
 479
 480         return pm;
 481 }
 482
 483 static int
 484 parse_nqueue(const char *q_arg)
 485 {
 486         char *end = NULL;
 487         unsigned long n;
 488
 489         /* parse hexadecimal string */
 490         n = strtoul(q_arg, &end, 10);
 491         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 492                 return -1;
 493         if (n == 0)
 494                 return -1;
 495         if (n >= MAX_RX_QUEUE_PER_LCORE)
 496                 return -1;
 497
 498         return n;
 499 }
 500
 501 /* Parse the argument given in the command line of the application */
 502 static int
 503 parse_args(int argc, char **argv)
 504 {
 505         int opt, ret;
 506         char **argvopt;
 507         int option_index;
 508         char *prgname = argv[0];
 509         static struct option lgopts[] = {
 510                 {NULL, 0, 0, 0}
 511         };
 512
 513         argvopt = argv;
 514
 515         while ((opt = getopt_long(argc, argvopt, "p:q:",
 516                                   lgopts, &option_index)) != EOF) {
 517
 518                 switch (opt) {
 519                 /* portmask */
 520                 case 'p':
 521                         enabled_port_mask = parse_portmask(optarg);
 522                         if (enabled_port_mask < 0) {
 523                                 printf("invalid portmask\n");
 524                                 print_usage(prgname);
 525                                 return -1;
 526                         }
 527                         break;
 528
 529                 /* nqueue */
 530                 case 'q':
 531                         rx_queue_per_lcore = parse_nqueue(optarg);
 532                         if (rx_queue_per_lcore < 0) {
 533                                 printf("invalid queue number\n");
 534                                 print_usage(prgname);
 535                                 return -1;
 536                         }
 537                         break;
 538
 539                 /* long options */
 540                 case 0:
 541                         print_usage(prgname);
 542                         return -1;
 543
 544                 default:
 545                         print_usage(prgname);
 546                         return -1;
 547                 }
 548         }
 549
 550         if (enabled_port_mask == 0) {
 551                 printf("portmask not specified\n");
 552                 print_usage(prgname);
 553                 return -1;
 554         }
 555
 556         if (optind >= 0)
 557                 argv[optind-1] = prgname;
 558
 559         ret = optind-1;
 560         optind = 1; /* reset getopt lib */
 561         return ret;
 562 }
 563
 564 static void
 565 print_ethaddr(const char *name, struct ether_addr *eth_addr)
 566 {
 567         char buf[ETHER_ADDR_FMT_SIZE];
 568         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
 569         printf("%s%s", name, buf);
 570 }
 571
 572 /* Check the link status of all ports in up to 9s, and print them finally */
 573 static void
 574 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
 575 {
 576 #define CHECK_INTERVAL 100 /* 100ms */
 577 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 578         uint16_t portid;
 579         uint8_t count, all_ports_up, print_flag = 0;
 580         struct rte_eth_link link;
 581
 582         printf("\nChecking link status");
 583         fflush(stdout);
 584         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 585                 all_ports_up = 1;
 586                 for (portid = 0; portid < port_num; portid++) {
 587                         if ((port_mask & (1 << portid)) == 0)
 588                                 continue;
 589                         memset(&link, 0, sizeof(link));
 590                         rte_eth_link_get_nowait(portid, &link);
 591                         /* print link status if flag set */
 592                         if (print_flag == 1) {
 593                                 if (link.link_status)
 594                                         printf(
 595                                         "Port%d Link Up .Speed %u Mbps - %s\n",
 596                                                 portid, link.link_speed,
 597                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 598                                         ("full-duplex") : ("half-duplex\n"));
 599                                 else
 600                                         printf("Port %d Link Down\n", portid);
 601                                 continue;
 602                         }
 603                         /* clear all_ports_up flag if any link down */
 604                         if (link.link_status == ETH_LINK_DOWN) {
 605                                 all_ports_up = 0;
 606                                 break;
 607                         }
 608                 }
 609                 /* after finally printing all link status, get out */
 610                 if (print_flag == 1)
 611                         break;
 612
 613                 if (all_ports_up == 0) {
 614                         printf(".");
 615                         fflush(stdout);
 616                         rte_delay_ms(CHECK_INTERVAL);
 617                 }
 618
 619                 /* set the print_flag if all ports up or timeout */
 620                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 621                         print_flag = 1;
 622                         printf("\ndone\n");
 623                 }
 624         }
 625 }
 626
 627 /* Check L3 packet type detection capablity of the NIC port */
 628 static int
 629 check_ptype(int portid)
 630 {
 631         int i, ret;
 632         int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
 633         uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
 634
 635         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
 636         if (ret <= 0)
 637                 return 0;
 638
 639         uint32_t ptypes[ret];
 640
 641         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
 642         for (i = 0; i < ret; ++i) {
 643                 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
 644                         ptype_l3_ipv4 = 1;
 645                 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
 646                         ptype_l3_ipv6 = 1;
 647         }
 648
 649         if (ptype_l3_ipv4 == 0)
 650                 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
 651
 652         if (ptype_l3_ipv6 == 0)
 653                 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
 654
 655         if (ptype_l3_ipv4 && ptype_l3_ipv6)
 656                 return 1;
 657
 658         return 0;
 659
 660 }
 661
 662 /* Parse packet type of a packet by SW */
 663 static inline void
 664 parse_ptype(struct rte_mbuf *m)
 665 {
 666         struct ether_hdr *eth_hdr;
 667         uint32_t packet_type = RTE_PTYPE_UNKNOWN;
 668         uint16_t ether_type;
 669
 670         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 671         ether_type = eth_hdr->ether_type;
 672         if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4))
 673                 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 674         else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6))
 675                 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 676
 677         m->packet_type = packet_type;
 678 }
 679
 680 /* callback function to detect packet type for a queue of a port */
 681 static uint16_t
 682 cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
 683                    struct rte_mbuf *pkts[], uint16_t nb_pkts,
 684                    uint16_t max_pkts __rte_unused,
 685                    void *user_param __rte_unused)
 686 {
 687         uint16_t i;
 688
 689         for (i = 0; i < nb_pkts; ++i)
 690                 parse_ptype(pkts[i]);
 691
 692         return nb_pkts;
 693 }
 694
 695 static int
 696 init_routing_table(void)
 697 {
 698         struct rte_lpm *lpm;
 699         struct rte_lpm6 *lpm6;
 700         int socket, ret;
 701         unsigned i;
 702
 703         for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
 704                 if (socket_lpm[socket]) {
 705                         lpm = socket_lpm[socket];
 706                         /* populate the LPM table */
 707                         for (i = 0; i < RTE_DIM(l3fwd_ipv4_route_array); i++) {
 708                                 ret = rte_lpm_add(lpm,
 709                                         l3fwd_ipv4_route_array[i].ip,
 710                                         l3fwd_ipv4_route_array[i].depth,
 711                                         l3fwd_ipv4_route_array[i].if_out);
 712
 713                                 if (ret < 0) {
 714                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 715                                                 "LPM table\n", i);
 716                                         return -1;
 717                                 }
 718
 719                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv4_BYTES_FMT
 720                                                 "/%d (port %d)\n",
 721                                         socket,
 722                                         IPv4_BYTES(l3fwd_ipv4_route_array[i].ip),
 723                                         l3fwd_ipv4_route_array[i].depth,
 724                                         l3fwd_ipv4_route_array[i].if_out);
 725                         }
 726                 }
 727
 728                 if (socket_lpm6[socket]) {
 729                         lpm6 = socket_lpm6[socket];
 730                         /* populate the LPM6 table */
 731                         for (i = 0; i < RTE_DIM(l3fwd_ipv6_route_array); i++) {
 732                                 ret = rte_lpm6_add(lpm6,
 733                                         l3fwd_ipv6_route_array[i].ip,
 734                                         l3fwd_ipv6_route_array[i].depth,
 735                                         l3fwd_ipv6_route_array[i].if_out);
 736
 737                                 if (ret < 0) {
 738                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 739                                                 "LPM6 table\n", i);
 740                                         return -1;
 741                                 }
 742
 743                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv6_BYTES_FMT
 744                                                 "/%d (port %d)\n",
 745                                         socket,
 746                                         IPv6_BYTES(l3fwd_ipv6_route_array[i].ip),
 747                                         l3fwd_ipv6_route_array[i].depth,
 748                                         l3fwd_ipv6_route_array[i].if_out);
 749                         }
 750                 }
 751         }
 752         return 0;
 753 }
 754
 755 static int
 756 init_mem(void)
 757 {
 758         char buf[PATH_MAX];
 759         struct rte_mempool *mp;
 760         struct rte_lpm *lpm;
 761         struct rte_lpm6 *lpm6;
 762         struct rte_lpm_config lpm_config;
 763         int socket;
 764         unsigned lcore_id;
 765
 766         /* traverse through lcores and initialize structures on each socket */
 767
 768         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 769
 770                 if (rte_lcore_is_enabled(lcore_id) == 0)
 771                         continue;
 772
 773                 socket = rte_lcore_to_socket_id(lcore_id);
 774
 775                 if (socket == SOCKET_ID_ANY)
 776                         socket = 0;
 777
 778                 if (socket_direct_pool[socket] == NULL) {
 779                         RTE_LOG(INFO, IP_FRAG, "Creating direct mempool on socket %i\n",
 780                                         socket);
 781                         snprintf(buf, sizeof(buf), "pool_direct_%i", socket);
 782
 783                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32,
 784                                 0, RTE_MBUF_DEFAULT_BUF_SIZE, socket);
 785                         if (mp == NULL) {
 786                                 RTE_LOG(ERR, IP_FRAG, "Cannot create direct mempool\n");
 787                                 return -1;
 788                         }
 789                         socket_direct_pool[socket] = mp;
 790                 }
 791
 792                 if (socket_indirect_pool[socket] == NULL) {
 793                         RTE_LOG(INFO, IP_FRAG, "Creating indirect mempool on socket %i\n",
 794                                         socket);
 795                         snprintf(buf, sizeof(buf), "pool_indirect_%i", socket);
 796
 797                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32, 0, 0,
 798                                 socket);
 799                         if (mp == NULL) {
 800                                 RTE_LOG(ERR, IP_FRAG, "Cannot create indirect mempool\n");
 801                                 return -1;
 802                         }
 803                         socket_indirect_pool[socket] = mp;
 804                 }
 805
 806                 if (socket_lpm[socket] == NULL) {
 807                         RTE_LOG(INFO, IP_FRAG, "Creating LPM table on socket %i\n", socket);
 808                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 809
 810                         lpm_config.max_rules = LPM_MAX_RULES;
 811                         lpm_config.number_tbl8s = 256;
 812                         lpm_config.flags = 0;
 813
 814                         lpm = rte_lpm_create(buf, socket, &lpm_config);
 815                         if (lpm == NULL) {
 816                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 817                                 return -1;
 818                         }
 819                         socket_lpm[socket] = lpm;
 820                 }
 821
 822                 if (socket_lpm6[socket] == NULL) {
 823                         RTE_LOG(INFO, IP_FRAG, "Creating LPM6 table on socket %i\n", socket);
 824                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 825
 826                         lpm6 = rte_lpm6_create(buf, socket, &lpm6_config);
 827                         if (lpm6 == NULL) {
 828                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 829                                 return -1;
 830                         }
 831                         socket_lpm6[socket] = lpm6;
 832                 }
 833         }
 834
 835         return 0;
 836 }
 837
 838 int
 839 main(int argc, char **argv)
 840 {
 841         struct lcore_queue_conf *qconf;
 842         struct rte_eth_dev_info dev_info;
 843         struct rte_eth_txconf *txconf;
 844         struct rx_queue *rxq;
 845         int socket, ret;
 846         unsigned nb_ports;
 847         uint16_t queueid = 0;
 848         unsigned lcore_id = 0, rx_lcore_id = 0;
 849         uint32_t n_tx_queue, nb_lcores;
 850         uint16_t portid;
 851
 852         /* init EAL */
 853         ret = rte_eal_init(argc, argv);
 854         if (ret < 0)
 855                 rte_exit(EXIT_FAILURE, "rte_eal_init failed");
 856         argc -= ret;
 857         argv += ret;
 858
 859         /* parse application arguments (after the EAL ones) */
 860         ret = parse_args(argc, argv);
 861         if (ret < 0)
 862                 rte_exit(EXIT_FAILURE, "Invalid arguments");
 863
 864         nb_ports = rte_eth_dev_count();
 865         if (nb_ports == 0)
 866                 rte_exit(EXIT_FAILURE, "No ports found!\n");
 867
 868         nb_lcores = rte_lcore_count();
 869
 870         /* initialize structures (mempools, lpm etc.) */
 871         if (init_mem() < 0)
 872                 rte_panic("Cannot initialize memory structures!\n");
 873
 874         /* check if portmask has non-existent ports */
 875         if (enabled_port_mask & ~(RTE_LEN2MASK(nb_ports, unsigned)))
 876                 rte_exit(EXIT_FAILURE, "Non-existent ports in portmask!\n");
 877
 878         /* initialize all ports */
 879         for (portid = 0; portid < nb_ports; portid++) {
 880                 struct rte_eth_conf local_port_conf = port_conf;
 881                 struct rte_eth_rxconf rxq_conf;
 882
 883                 /* skip ports that are not enabled */
 884                 if ((enabled_port_mask & (1 << portid)) == 0) {
 885                         printf("Skipping disabled port %d\n", portid);
 886                         continue;
 887                 }
 888
 889                 qconf = &lcore_queue_conf[rx_lcore_id];
 890
 891                 /* limit the frame size to the maximum supported by NIC */
 892                 rte_eth_dev_info_get(portid, &dev_info);
 893                 local_port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
 894                     dev_info.max_rx_pktlen,
 895                     local_port_conf.rxmode.max_rx_pkt_len);
 896
 897                 /* get the lcore_id for this port */
 898                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 899                        qconf->n_rx_queue == (unsigned)rx_queue_per_lcore) {
 900
 901                         rx_lcore_id ++;
 902                         if (rx_lcore_id >= RTE_MAX_LCORE)
 903                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 904
 905                         qconf = &lcore_queue_conf[rx_lcore_id];
 906                 }
 907
 908                 socket = (int) rte_lcore_to_socket_id(rx_lcore_id);
 909                 if (socket == SOCKET_ID_ANY)
 910                         socket = 0;
 911
 912                 rxq = &qconf->rx_queue_list[qconf->n_rx_queue];
 913                 rxq->portid = portid;
 914                 rxq->direct_pool = socket_direct_pool[socket];
 915                 rxq->indirect_pool = socket_indirect_pool[socket];
 916                 rxq->lpm = socket_lpm[socket];
 917                 rxq->lpm6 = socket_lpm6[socket];
 918                 qconf->n_rx_queue++;
 919
 920                 /* init port */
 921                 printf("Initializing port %d on lcore %u...", portid,
 922                        rx_lcore_id);
 923                 fflush(stdout);
 924
 925                 n_tx_queue = nb_lcores;
 926                 if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
 927                         n_tx_queue = MAX_TX_QUEUE_PER_PORT;
 928                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 929                         local_port_conf.txmode.offloads |=
 930                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 931                 ret = rte_eth_dev_configure(portid, 1, (uint16_t)n_tx_queue,
 932                                             &local_port_conf);
 933                 if (ret < 0) {
 934                         printf("\n");
 935                         rte_exit(EXIT_FAILURE, "Cannot configure device: "
 936                                 "err=%d, port=%d\n",
 937                                 ret, portid);
 938                 }
 939
 940                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 941                                             &nb_txd);
 942                 if (ret < 0) {
 943                         printf("\n");
 944                         rte_exit(EXIT_FAILURE, "Cannot adjust number of "
 945                                 "descriptors: err=%d, port=%d\n", ret, portid);
 946                 }
 947
 948                 /* init one RX queue */
 949                 rxq_conf = dev_info.default_rxconf;
 950                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 951                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 952                                              socket, &rxq_conf,
 953                                              socket_direct_pool[socket]);
 954                 if (ret < 0) {
 955                         printf("\n");
 956                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: "
 957                                 "err=%d, port=%d\n",
 958                                 ret, portid);
 959                 }
 960
 961                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
 962                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
 963                 printf("\n");
 964
 965                 /* init one TX queue per couple (lcore,port) */
 966                 queueid = 0;
 967                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 968                         if (rte_lcore_is_enabled(lcore_id) == 0)
 969                                 continue;
 970
 971                         socket = (int) rte_lcore_to_socket_id(lcore_id);
 972                         printf("txq=%u,%d ", lcore_id, queueid);
 973                         fflush(stdout);
 974
 975                         txconf = &dev_info.default_txconf;
 976                         txconf->txq_flags = ETH_TXQ_FLAGS_IGNORE;
 977                         txconf->offloads = local_port_conf.txmode.offloads;
 978                         ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
 979                                                      socket, txconf);
 980                         if (ret < 0) {
 981                                 printf("\n");
 982                                 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: "
 983                                         "err=%d, port=%d\n", ret, portid);
 984                         }
 985
 986                         qconf = &lcore_queue_conf[lcore_id];
 987                         qconf->tx_queue_id[portid] = queueid;
 988                         queueid++;
 989                 }
 990
 991                 printf("\n");
 992         }
 993
 994         printf("\n");
 995
 996         /* start ports */
 997         for (portid = 0; portid < nb_ports; portid++) {
 998                 if ((enabled_port_mask & (1 << portid)) == 0) {
 999                         continue;
1000                 }
1001                 /* Start device */
1002                 ret = rte_eth_dev_start(portid);
1003                 if (ret < 0)
1004                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
1005                                 ret, portid);
1006
1007                 rte_eth_promiscuous_enable(portid);
1008
1009                 if (check_ptype(portid) == 0) {
1010                         rte_eth_add_rx_callback(portid, 0, cb_parse_ptype, NULL);
1011                         printf("Add Rx callback function to detect L3 packet type by SW :"
1012                                 " port = %d\n", portid);
1013                 }
1014         }
1015
1016         if (init_routing_table() < 0)
1017                 rte_exit(EXIT_FAILURE, "Cannot init routing table\n");
1018
1019         check_all_ports_link_status(nb_ports, enabled_port_mask);
1020
1021         /* launch per-lcore init on every lcore */
1022         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1023         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1024                 if (rte_eal_wait_lcore(lcore_id) < 0)
1025                         return -1;
1026         }
1027
1028         return 0;
1029 }