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