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        RTE_ETHER_MTU
  56 #define IPV6_MTU_DEFAULT        RTE_ETHER_MTU
  57
  58 /*
  59  * The overhead from max frame size to MTU.
  60  * We have to consider the max possible overhead.
  61  */
  62 #define MTU_OVERHEAD    \
  63         (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + \
  64                 2 * sizeof(struct rte_vlan_hdr))
  65
  66 /*
  67  * Default payload in bytes for the IPv6 packet.
  68  */
  69 #define IPV4_DEFAULT_PAYLOAD    (IPV4_MTU_DEFAULT - sizeof(struct rte_ipv4_hdr))
  70 #define IPV6_DEFAULT_PAYLOAD    (IPV6_MTU_DEFAULT - sizeof(struct rte_ipv6_hdr))
  71
  72 /*
  73  * Max number of fragments per packet expected - defined by config file.
  74  */
  75 #define MAX_PACKET_FRAG RTE_LIBRTE_IP_FRAG_MAX_FRAG
  76
  77 #define NB_MBUF   8192
  78
  79 #define MAX_PKT_BURST   32
  80 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  81
  82 /* Configure how many packets ahead to prefetch, when reading packets */
  83 #define PREFETCH_OFFSET 3
  84
  85 /*
  86  * Configurable number of RX/TX ring descriptors
  87  */
  88 #define RTE_TEST_RX_DESC_DEFAULT 1024
  89 #define RTE_TEST_TX_DESC_DEFAULT 1024
  90 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  91 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  92
  93 /* ethernet addresses of ports */
  94 static struct rte_ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
  95
  96 #ifndef IPv4_BYTES
  97 #define IPv4_BYTES_FMT "%" PRIu8 ".%" PRIu8 ".%" PRIu8 ".%" PRIu8
  98 #define IPv4_BYTES(addr) \
  99                 (uint8_t) (((addr) >> 24) & 0xFF),\
 100                 (uint8_t) (((addr) >> 16) & 0xFF),\
 101                 (uint8_t) (((addr) >> 8) & 0xFF),\
 102                 (uint8_t) ((addr) & 0xFF)
 103 #endif
 104
 105 #ifndef IPv6_BYTES
 106 #define IPv6_BYTES_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"\
 107                        "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
 108 #define IPv6_BYTES(addr) \
 109         addr[0],  addr[1], addr[2],  addr[3], \
 110         addr[4],  addr[5], addr[6],  addr[7], \
 111         addr[8],  addr[9], addr[10], addr[11],\
 112         addr[12], addr[13],addr[14], addr[15]
 113 #endif
 114
 115 #define IPV6_ADDR_LEN 16
 116
 117 /* mask of enabled ports */
 118 static int enabled_port_mask = 0;
 119
 120 static int rx_queue_per_lcore = 1;
 121
 122 #define MBUF_TABLE_SIZE  (2 * MAX(MAX_PKT_BURST, MAX_PACKET_FRAG))
 123
 124 struct mbuf_table {
 125         uint16_t len;
 126         struct rte_mbuf *m_table[MBUF_TABLE_SIZE];
 127 };
 128
 129 struct rx_queue {
 130         struct rte_mempool *direct_pool;
 131         struct rte_mempool *indirect_pool;
 132         struct rte_lpm *lpm;
 133         struct rte_lpm6 *lpm6;
 134         uint16_t portid;
 135 };
 136
 137 #define MAX_RX_QUEUE_PER_LCORE 16
 138 #define MAX_TX_QUEUE_PER_PORT 16
 139 struct lcore_queue_conf {
 140         uint16_t n_rx_queue;
 141         uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
 142         struct rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 143         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 144 } __rte_cache_aligned;
 145 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 146
 147 static struct rte_eth_conf port_conf = {
 148         .rxmode = {
 149                 .max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
 150                 .split_hdr_size = 0,
 151                 .offloads = (DEV_RX_OFFLOAD_CHECKSUM |
 152                              DEV_RX_OFFLOAD_SCATTER |
 153                              DEV_RX_OFFLOAD_JUMBO_FRAME),
 154         },
 155         .txmode = {
 156                 .mq_mode = ETH_MQ_TX_NONE,
 157                 .offloads = (DEV_TX_OFFLOAD_IPV4_CKSUM |
 158                              DEV_TX_OFFLOAD_MULTI_SEGS),
 159         },
 160 };
 161
 162 /*
 163  * IPv4 forwarding table
 164  */
 165 struct l3fwd_ipv4_route {
 166         uint32_t ip;
 167         uint8_t  depth;
 168         uint8_t  if_out;
 169 };
 170
 171 struct l3fwd_ipv4_route l3fwd_ipv4_route_array[] = {
 172                 {RTE_IPv4(100,10,0,0), 16, 0},
 173                 {RTE_IPv4(100,20,0,0), 16, 1},
 174                 {RTE_IPv4(100,30,0,0), 16, 2},
 175                 {RTE_IPv4(100,40,0,0), 16, 3},
 176                 {RTE_IPv4(100,50,0,0), 16, 4},
 177                 {RTE_IPv4(100,60,0,0), 16, 5},
 178                 {RTE_IPv4(100,70,0,0), 16, 6},
 179                 {RTE_IPv4(100,80,0,0), 16, 7},
 180 };
 181
 182 /*
 183  * IPv6 forwarding table
 184  */
 185
 186 struct l3fwd_ipv6_route {
 187         uint8_t ip[IPV6_ADDR_LEN];
 188         uint8_t depth;
 189         uint8_t if_out;
 190 };
 191
 192 static struct l3fwd_ipv6_route l3fwd_ipv6_route_array[] = {
 193         {{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 0},
 194         {{2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 1},
 195         {{3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 2},
 196         {{4,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 3},
 197         {{5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 4},
 198         {{6,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 5},
 199         {{7,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 6},
 200         {{8,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 7},
 201 };
 202
 203 #define LPM_MAX_RULES         1024
 204 #define LPM6_MAX_RULES         1024
 205 #define LPM6_NUMBER_TBL8S (1 << 16)
 206
 207 struct rte_lpm6_config lpm6_config = {
 208                 .max_rules = LPM6_MAX_RULES,
 209                 .number_tbl8s = LPM6_NUMBER_TBL8S,
 210                 .flags = 0
 211 };
 212
 213 static struct rte_mempool *socket_direct_pool[RTE_MAX_NUMA_NODES];
 214 static struct rte_mempool *socket_indirect_pool[RTE_MAX_NUMA_NODES];
 215 static struct rte_lpm *socket_lpm[RTE_MAX_NUMA_NODES];
 216 static struct rte_lpm6 *socket_lpm6[RTE_MAX_NUMA_NODES];
 217
 218 /* Send burst of packets on an output interface */
 219 static inline int
 220 send_burst(struct lcore_queue_conf *qconf, uint16_t n, uint16_t port)
 221 {
 222         struct rte_mbuf **m_table;
 223         int ret;
 224         uint16_t queueid;
 225
 226         queueid = qconf->tx_queue_id[port];
 227         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 228
 229         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 230         if (unlikely(ret < n)) {
 231                 do {
 232                         rte_pktmbuf_free(m_table[ret]);
 233                 } while (++ret < n);
 234         }
 235
 236         return 0;
 237 }
 238
 239 static inline void
 240 l3fwd_simple_forward(struct rte_mbuf *m, struct lcore_queue_conf *qconf,
 241                 uint8_t queueid, uint16_t port_in)
 242 {
 243         struct rx_queue *rxq;
 244         uint32_t i, len, next_hop;
 245         uint8_t ipv6;
 246         uint16_t port_out;
 247         int32_t len2;
 248
 249         ipv6 = 0;
 250         rxq = &qconf->rx_queue_list[queueid];
 251
 252         /* by default, send everything back to the source port */
 253         port_out = port_in;
 254
 255         /* Remove the Ethernet header and trailer from the input packet */
 256         rte_pktmbuf_adj(m, (uint16_t)sizeof(struct rte_ether_hdr));
 257
 258         /* Build transmission burst */
 259         len = qconf->tx_mbufs[port_out].len;
 260
 261         /* if this is an IPv4 packet */
 262         if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
 263                 struct rte_ipv4_hdr *ip_hdr;
 264                 uint32_t ip_dst;
 265                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 266                 ip_hdr = rte_pktmbuf_mtod(m, struct rte_ipv4_hdr *);
 267                 ip_dst = rte_be_to_cpu_32(ip_hdr->dst_addr);
 268
 269                 /* Find destination port */
 270                 if (rte_lpm_lookup(rxq->lpm, ip_dst, &next_hop) == 0 &&
 271                                 (enabled_port_mask & 1 << next_hop) != 0) {
 272                         port_out = next_hop;
 273
 274                         /* Build transmission burst for new port */
 275                         len = qconf->tx_mbufs[port_out].len;
 276                 }
 277
 278                 /* if we don't need to do any fragmentation */
 279                 if (likely (IPV4_MTU_DEFAULT >= m->pkt_len)) {
 280                         qconf->tx_mbufs[port_out].m_table[len] = m;
 281                         len2 = 1;
 282                 } else {
 283                         len2 = rte_ipv4_fragment_packet(m,
 284                                 &qconf->tx_mbufs[port_out].m_table[len],
 285                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 286                                 IPV4_MTU_DEFAULT,
 287                                 rxq->direct_pool, rxq->indirect_pool);
 288
 289                         /* Free input packet */
 290                         rte_pktmbuf_free(m);
 291
 292                         /* If we fail to fragment the packet */
 293                         if (unlikely (len2 < 0))
 294                                 return;
 295                 }
 296         } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
 297                 /* if this is an IPv6 packet */
 298                 struct rte_ipv6_hdr *ip_hdr;
 299
 300                 ipv6 = 1;
 301
 302                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 303                 ip_hdr = rte_pktmbuf_mtod(m, struct rte_ipv6_hdr *);
 304
 305                 /* Find destination port */
 306                 if (rte_lpm6_lookup(rxq->lpm6, ip_hdr->dst_addr,
 307                                                 &next_hop) == 0 &&
 308                                 (enabled_port_mask & 1 << next_hop) != 0) {
 309                         port_out = next_hop;
 310
 311                         /* Build transmission burst for new port */
 312                         len = qconf->tx_mbufs[port_out].len;
 313                 }
 314
 315                 /* if we don't need to do any fragmentation */
 316                 if (likely (IPV6_MTU_DEFAULT >= m->pkt_len)) {
 317                         qconf->tx_mbufs[port_out].m_table[len] = m;
 318                         len2 = 1;
 319                 } else {
 320                         len2 = rte_ipv6_fragment_packet(m,
 321                                 &qconf->tx_mbufs[port_out].m_table[len],
 322                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 323                                 IPV6_MTU_DEFAULT,
 324                                 rxq->direct_pool, rxq->indirect_pool);
 325
 326                         /* Free input packet */
 327                         rte_pktmbuf_free(m);
 328
 329                         /* If we fail to fragment the packet */
 330                         if (unlikely (len2 < 0))
 331                                 return;
 332                 }
 333         }
 334         /* else, just forward the packet */
 335         else {
 336                 qconf->tx_mbufs[port_out].m_table[len] = m;
 337                 len2 = 1;
 338         }
 339
 340         for (i = len; i < len + len2; i ++) {
 341                 void *d_addr_bytes;
 342
 343                 m = qconf->tx_mbufs[port_out].m_table[i];
 344                 struct rte_ether_hdr *eth_hdr = (struct rte_ether_hdr *)
 345                         rte_pktmbuf_prepend(m,
 346                                 (uint16_t)sizeof(struct rte_ether_hdr));
 347                 if (eth_hdr == NULL) {
 348                         rte_panic("No headroom in mbuf.\n");
 349                 }
 350
 351                 m->l2_len = sizeof(struct rte_ether_hdr);
 352
 353                 /* 02:00:00:00:00:xx */
 354                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 355                 *((uint64_t *)d_addr_bytes) = 0x000000000002 + ((uint64_t)port_out << 40);
 356
 357                 /* src addr */
 358                 rte_ether_addr_copy(&ports_eth_addr[port_out],
 359                                 &eth_hdr->s_addr);
 360                 if (ipv6)
 361                         eth_hdr->ether_type =
 362                                 rte_be_to_cpu_16(RTE_ETHER_TYPE_IPv6);
 363                 else
 364                         eth_hdr->ether_type =
 365                                 rte_be_to_cpu_16(RTE_ETHER_TYPE_IPv4);
 366         }
 367
 368         len += len2;
 369
 370         if (likely(len < MAX_PKT_BURST)) {
 371                 qconf->tx_mbufs[port_out].len = (uint16_t)len;
 372                 return;
 373         }
 374
 375         /* Transmit packets */
 376         send_burst(qconf, (uint16_t)len, port_out);
 377         qconf->tx_mbufs[port_out].len = 0;
 378 }
 379
 380 /* main processing loop */
 381 static int
 382 main_loop(__attribute__((unused)) void *dummy)
 383 {
 384         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 385         unsigned lcore_id;
 386         uint64_t prev_tsc, diff_tsc, cur_tsc;
 387         int i, j, nb_rx;
 388         uint16_t portid;
 389         struct lcore_queue_conf *qconf;
 390         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 391
 392         prev_tsc = 0;
 393
 394         lcore_id = rte_lcore_id();
 395         qconf = &lcore_queue_conf[lcore_id];
 396
 397         if (qconf->n_rx_queue == 0) {
 398                 RTE_LOG(INFO, IP_FRAG, "lcore %u has nothing to do\n", lcore_id);
 399                 return 0;
 400         }
 401
 402         RTE_LOG(INFO, IP_FRAG, "entering main loop on lcore %u\n", lcore_id);
 403
 404         for (i = 0; i < qconf->n_rx_queue; i++) {
 405
 406                 portid = qconf->rx_queue_list[i].portid;
 407                 RTE_LOG(INFO, IP_FRAG, " -- lcoreid=%u portid=%d\n", lcore_id,
 408                                 portid);
 409         }
 410
 411         while (1) {
 412
 413                 cur_tsc = rte_rdtsc();
 414
 415                 /*
 416                  * TX burst queue drain
 417                  */
 418                 diff_tsc = cur_tsc - prev_tsc;
 419                 if (unlikely(diff_tsc > drain_tsc)) {
 420
 421                         /*
 422                          * This could be optimized (use queueid instead of
 423                          * portid), but it is not called so often
 424                          */
 425                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 426                                 if (qconf->tx_mbufs[portid].len == 0)
 427                                         continue;
 428                                 send_burst(&lcore_queue_conf[lcore_id],
 429                                            qconf->tx_mbufs[portid].len,
 430                                            portid);
 431                                 qconf->tx_mbufs[portid].len = 0;
 432                         }
 433
 434                         prev_tsc = cur_tsc;
 435                 }
 436
 437                 /*
 438                  * Read packet from RX queues
 439                  */
 440                 for (i = 0; i < qconf->n_rx_queue; i++) {
 441
 442                         portid = qconf->rx_queue_list[i].portid;
 443                         nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 444                                                  MAX_PKT_BURST);
 445
 446                         /* Prefetch first packets */
 447                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 448                                 rte_prefetch0(rte_pktmbuf_mtod(
 449                                                 pkts_burst[j], void *));
 450                         }
 451
 452                         /* Prefetch and forward already prefetched packets */
 453                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 454                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 455                                                 j + PREFETCH_OFFSET], void *));
 456                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 457                         }
 458
 459                         /* Forward remaining prefetched packets */
 460                         for (; j < nb_rx; j++) {
 461                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 462                         }
 463                 }
 464         }
 465 }
 466
 467 /* display usage */
 468 static void
 469 print_usage(const char *prgname)
 470 {
 471         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 472                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 473                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n",
 474                prgname);
 475 }
 476
 477 static int
 478 parse_portmask(const char *portmask)
 479 {
 480         char *end = NULL;
 481         unsigned long pm;
 482
 483         /* parse hexadecimal string */
 484         pm = strtoul(portmask, &end, 16);
 485         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 486                 return -1;
 487
 488         if (pm == 0)
 489                 return -1;
 490
 491         return pm;
 492 }
 493
 494 static int
 495 parse_nqueue(const char *q_arg)
 496 {
 497         char *end = NULL;
 498         unsigned long n;
 499
 500         /* parse hexadecimal string */
 501         n = strtoul(q_arg, &end, 10);
 502         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 503                 return -1;
 504         if (n == 0)
 505                 return -1;
 506         if (n >= MAX_RX_QUEUE_PER_LCORE)
 507                 return -1;
 508
 509         return n;
 510 }
 511
 512 /* Parse the argument given in the command line of the application */
 513 static int
 514 parse_args(int argc, char **argv)
 515 {
 516         int opt, ret;
 517         char **argvopt;
 518         int option_index;
 519         char *prgname = argv[0];
 520         static struct option lgopts[] = {
 521                 {NULL, 0, 0, 0}
 522         };
 523
 524         argvopt = argv;
 525
 526         while ((opt = getopt_long(argc, argvopt, "p:q:",
 527                                   lgopts, &option_index)) != EOF) {
 528
 529                 switch (opt) {
 530                 /* portmask */
 531                 case 'p':
 532                         enabled_port_mask = parse_portmask(optarg);
 533                         if (enabled_port_mask < 0) {
 534                                 printf("invalid portmask\n");
 535                                 print_usage(prgname);
 536                                 return -1;
 537                         }
 538                         break;
 539
 540                 /* nqueue */
 541                 case 'q':
 542                         rx_queue_per_lcore = parse_nqueue(optarg);
 543                         if (rx_queue_per_lcore < 0) {
 544                                 printf("invalid queue number\n");
 545                                 print_usage(prgname);
 546                                 return -1;
 547                         }
 548                         break;
 549
 550                 /* long options */
 551                 case 0:
 552                         print_usage(prgname);
 553                         return -1;
 554
 555                 default:
 556                         print_usage(prgname);
 557                         return -1;
 558                 }
 559         }
 560
 561         if (enabled_port_mask == 0) {
 562                 printf("portmask not specified\n");
 563                 print_usage(prgname);
 564                 return -1;
 565         }
 566
 567         if (optind >= 0)
 568                 argv[optind-1] = prgname;
 569
 570         ret = optind-1;
 571         optind = 1; /* reset getopt lib */
 572         return ret;
 573 }
 574
 575 static void
 576 print_ethaddr(const char *name, struct rte_ether_addr *eth_addr)
 577 {
 578         char buf[RTE_ETHER_ADDR_FMT_SIZE];
 579         rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, eth_addr);
 580         printf("%s%s", name, buf);
 581 }
 582
 583 /* Check the link status of all ports in up to 9s, and print them finally */
 584 static void
 585 check_all_ports_link_status(uint32_t port_mask)
 586 {
 587 #define CHECK_INTERVAL 100 /* 100ms */
 588 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 589         uint16_t portid;
 590         uint8_t count, all_ports_up, print_flag = 0;
 591         struct rte_eth_link link;
 592
 593         printf("\nChecking link status");
 594         fflush(stdout);
 595         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 596                 all_ports_up = 1;
 597                 RTE_ETH_FOREACH_DEV(portid) {
 598                         if ((port_mask & (1 << portid)) == 0)
 599                                 continue;
 600                         memset(&link, 0, sizeof(link));
 601                         rte_eth_link_get_nowait(portid, &link);
 602                         /* print link status if flag set */
 603                         if (print_flag == 1) {
 604                                 if (link.link_status)
 605                                         printf(
 606                                         "Port%d Link Up .Speed %u Mbps - %s\n",
 607                                                 portid, link.link_speed,
 608                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 609                                         ("full-duplex") : ("half-duplex\n"));
 610                                 else
 611                                         printf("Port %d Link Down\n", portid);
 612                                 continue;
 613                         }
 614                         /* clear all_ports_up flag if any link down */
 615                         if (link.link_status == ETH_LINK_DOWN) {
 616                                 all_ports_up = 0;
 617                                 break;
 618                         }
 619                 }
 620                 /* after finally printing all link status, get out */
 621                 if (print_flag == 1)
 622                         break;
 623
 624                 if (all_ports_up == 0) {
 625                         printf(".");
 626                         fflush(stdout);
 627                         rte_delay_ms(CHECK_INTERVAL);
 628                 }
 629
 630                 /* set the print_flag if all ports up or timeout */
 631                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 632                         print_flag = 1;
 633                         printf("\ndone\n");
 634                 }
 635         }
 636 }
 637
 638 /* Check L3 packet type detection capablity of the NIC port */
 639 static int
 640 check_ptype(int portid)
 641 {
 642         int i, ret;
 643         int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
 644         uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
 645
 646         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
 647         if (ret <= 0)
 648                 return 0;
 649
 650         uint32_t ptypes[ret];
 651
 652         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
 653         for (i = 0; i < ret; ++i) {
 654                 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
 655                         ptype_l3_ipv4 = 1;
 656                 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
 657                         ptype_l3_ipv6 = 1;
 658         }
 659
 660         if (ptype_l3_ipv4 == 0)
 661                 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
 662
 663         if (ptype_l3_ipv6 == 0)
 664                 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
 665
 666         if (ptype_l3_ipv4 && ptype_l3_ipv6)
 667                 return 1;
 668
 669         return 0;
 670
 671 }
 672
 673 /* Parse packet type of a packet by SW */
 674 static inline void
 675 parse_ptype(struct rte_mbuf *m)
 676 {
 677         struct rte_ether_hdr *eth_hdr;
 678         uint32_t packet_type = RTE_PTYPE_UNKNOWN;
 679         uint16_t ether_type;
 680
 681         eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 682         ether_type = eth_hdr->ether_type;
 683         if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPv4))
 684                 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 685         else if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPv6))
 686                 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 687
 688         m->packet_type = packet_type;
 689 }
 690
 691 /* callback function to detect packet type for a queue of a port */
 692 static uint16_t
 693 cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
 694                    struct rte_mbuf *pkts[], uint16_t nb_pkts,
 695                    uint16_t max_pkts __rte_unused,
 696                    void *user_param __rte_unused)
 697 {
 698         uint16_t i;
 699
 700         for (i = 0; i < nb_pkts; ++i)
 701                 parse_ptype(pkts[i]);
 702
 703         return nb_pkts;
 704 }
 705
 706 static int
 707 init_routing_table(void)
 708 {
 709         struct rte_lpm *lpm;
 710         struct rte_lpm6 *lpm6;
 711         int socket, ret;
 712         unsigned i;
 713
 714         for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
 715                 if (socket_lpm[socket]) {
 716                         lpm = socket_lpm[socket];
 717                         /* populate the LPM table */
 718                         for (i = 0; i < RTE_DIM(l3fwd_ipv4_route_array); i++) {
 719                                 ret = rte_lpm_add(lpm,
 720                                         l3fwd_ipv4_route_array[i].ip,
 721                                         l3fwd_ipv4_route_array[i].depth,
 722                                         l3fwd_ipv4_route_array[i].if_out);
 723
 724                                 if (ret < 0) {
 725                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 726                                                 "LPM table\n", i);
 727                                         return -1;
 728                                 }
 729
 730                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv4_BYTES_FMT
 731                                                 "/%d (port %d)\n",
 732                                         socket,
 733                                         IPv4_BYTES(l3fwd_ipv4_route_array[i].ip),
 734                                         l3fwd_ipv4_route_array[i].depth,
 735                                         l3fwd_ipv4_route_array[i].if_out);
 736                         }
 737                 }
 738
 739                 if (socket_lpm6[socket]) {
 740                         lpm6 = socket_lpm6[socket];
 741                         /* populate the LPM6 table */
 742                         for (i = 0; i < RTE_DIM(l3fwd_ipv6_route_array); i++) {
 743                                 ret = rte_lpm6_add(lpm6,
 744                                         l3fwd_ipv6_route_array[i].ip,
 745                                         l3fwd_ipv6_route_array[i].depth,
 746                                         l3fwd_ipv6_route_array[i].if_out);
 747
 748                                 if (ret < 0) {
 749                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 750                                                 "LPM6 table\n", i);
 751                                         return -1;
 752                                 }
 753
 754                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv6_BYTES_FMT
 755                                                 "/%d (port %d)\n",
 756                                         socket,
 757                                         IPv6_BYTES(l3fwd_ipv6_route_array[i].ip),
 758                                         l3fwd_ipv6_route_array[i].depth,
 759                                         l3fwd_ipv6_route_array[i].if_out);
 760                         }
 761                 }
 762         }
 763         return 0;
 764 }
 765
 766 static int
 767 init_mem(void)
 768 {
 769         char buf[PATH_MAX];
 770         struct rte_mempool *mp;
 771         struct rte_lpm *lpm;
 772         struct rte_lpm6 *lpm6;
 773         struct rte_lpm_config lpm_config;
 774         int socket;
 775         unsigned lcore_id;
 776
 777         /* traverse through lcores and initialize structures on each socket */
 778
 779         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 780
 781                 if (rte_lcore_is_enabled(lcore_id) == 0)
 782                         continue;
 783
 784                 socket = rte_lcore_to_socket_id(lcore_id);
 785
 786                 if (socket == SOCKET_ID_ANY)
 787                         socket = 0;
 788
 789                 if (socket_direct_pool[socket] == NULL) {
 790                         RTE_LOG(INFO, IP_FRAG, "Creating direct mempool on socket %i\n",
 791                                         socket);
 792                         snprintf(buf, sizeof(buf), "pool_direct_%i", socket);
 793
 794                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32,
 795                                 0, RTE_MBUF_DEFAULT_BUF_SIZE, socket);
 796                         if (mp == NULL) {
 797                                 RTE_LOG(ERR, IP_FRAG, "Cannot create direct mempool\n");
 798                                 return -1;
 799                         }
 800                         socket_direct_pool[socket] = mp;
 801                 }
 802
 803                 if (socket_indirect_pool[socket] == NULL) {
 804                         RTE_LOG(INFO, IP_FRAG, "Creating indirect mempool on socket %i\n",
 805                                         socket);
 806                         snprintf(buf, sizeof(buf), "pool_indirect_%i", socket);
 807
 808                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32, 0, 0,
 809                                 socket);
 810                         if (mp == NULL) {
 811                                 RTE_LOG(ERR, IP_FRAG, "Cannot create indirect mempool\n");
 812                                 return -1;
 813                         }
 814                         socket_indirect_pool[socket] = mp;
 815                 }
 816
 817                 if (socket_lpm[socket] == NULL) {
 818                         RTE_LOG(INFO, IP_FRAG, "Creating LPM table on socket %i\n", socket);
 819                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 820
 821                         lpm_config.max_rules = LPM_MAX_RULES;
 822                         lpm_config.number_tbl8s = 256;
 823                         lpm_config.flags = 0;
 824
 825                         lpm = rte_lpm_create(buf, socket, &lpm_config);
 826                         if (lpm == NULL) {
 827                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 828                                 return -1;
 829                         }
 830                         socket_lpm[socket] = lpm;
 831                 }
 832
 833                 if (socket_lpm6[socket] == NULL) {
 834                         RTE_LOG(INFO, IP_FRAG, "Creating LPM6 table on socket %i\n", socket);
 835                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 836
 837                         lpm6 = rte_lpm6_create(buf, socket, &lpm6_config);
 838                         if (lpm6 == NULL) {
 839                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 840                                 return -1;
 841                         }
 842                         socket_lpm6[socket] = lpm6;
 843                 }
 844         }
 845
 846         return 0;
 847 }
 848
 849 int
 850 main(int argc, char **argv)
 851 {
 852         struct lcore_queue_conf *qconf;
 853         struct rte_eth_dev_info dev_info;
 854         struct rte_eth_txconf *txconf;
 855         struct rx_queue *rxq;
 856         int socket, ret;
 857         uint16_t nb_ports;
 858         uint16_t queueid = 0;
 859         unsigned lcore_id = 0, rx_lcore_id = 0;
 860         uint32_t n_tx_queue, nb_lcores;
 861         uint16_t portid;
 862
 863         /* init EAL */
 864         ret = rte_eal_init(argc, argv);
 865         if (ret < 0)
 866                 rte_exit(EXIT_FAILURE, "rte_eal_init failed");
 867         argc -= ret;
 868         argv += ret;
 869
 870         /* parse application arguments (after the EAL ones) */
 871         ret = parse_args(argc, argv);
 872         if (ret < 0)
 873                 rte_exit(EXIT_FAILURE, "Invalid arguments");
 874
 875         nb_ports = rte_eth_dev_count_avail();
 876         if (nb_ports == 0)
 877                 rte_exit(EXIT_FAILURE, "No ports found!\n");
 878
 879         nb_lcores = rte_lcore_count();
 880
 881         /* initialize structures (mempools, lpm etc.) */
 882         if (init_mem() < 0)
 883                 rte_panic("Cannot initialize memory structures!\n");
 884
 885         /* check if portmask has non-existent ports */
 886         if (enabled_port_mask & ~(RTE_LEN2MASK(nb_ports, unsigned)))
 887                 rte_exit(EXIT_FAILURE, "Non-existent ports in portmask!\n");
 888
 889         /* initialize all ports */
 890         RTE_ETH_FOREACH_DEV(portid) {
 891                 struct rte_eth_conf local_port_conf = port_conf;
 892                 struct rte_eth_rxconf rxq_conf;
 893
 894                 /* skip ports that are not enabled */
 895                 if ((enabled_port_mask & (1 << portid)) == 0) {
 896                         printf("Skipping disabled port %d\n", portid);
 897                         continue;
 898                 }
 899
 900                 qconf = &lcore_queue_conf[rx_lcore_id];
 901
 902                 /* limit the frame size to the maximum supported by NIC */
 903                 rte_eth_dev_info_get(portid, &dev_info);
 904                 local_port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
 905                     dev_info.max_rx_pktlen,
 906                     local_port_conf.rxmode.max_rx_pkt_len);
 907
 908                 /* get the lcore_id for this port */
 909                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 910                        qconf->n_rx_queue == (unsigned)rx_queue_per_lcore) {
 911
 912                         rx_lcore_id ++;
 913                         if (rx_lcore_id >= RTE_MAX_LCORE)
 914                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 915
 916                         qconf = &lcore_queue_conf[rx_lcore_id];
 917                 }
 918
 919                 socket = (int) rte_lcore_to_socket_id(rx_lcore_id);
 920                 if (socket == SOCKET_ID_ANY)
 921                         socket = 0;
 922
 923                 rxq = &qconf->rx_queue_list[qconf->n_rx_queue];
 924                 rxq->portid = portid;
 925                 rxq->direct_pool = socket_direct_pool[socket];
 926                 rxq->indirect_pool = socket_indirect_pool[socket];
 927                 rxq->lpm = socket_lpm[socket];
 928                 rxq->lpm6 = socket_lpm6[socket];
 929                 qconf->n_rx_queue++;
 930
 931                 /* init port */
 932                 printf("Initializing port %d on lcore %u...", portid,
 933                        rx_lcore_id);
 934                 fflush(stdout);
 935
 936                 n_tx_queue = nb_lcores;
 937                 if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
 938                         n_tx_queue = MAX_TX_QUEUE_PER_PORT;
 939                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 940                         local_port_conf.txmode.offloads |=
 941                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 942                 ret = rte_eth_dev_configure(portid, 1, (uint16_t)n_tx_queue,
 943                                             &local_port_conf);
 944                 if (ret < 0) {
 945                         printf("\n");
 946                         rte_exit(EXIT_FAILURE, "Cannot configure device: "
 947                                 "err=%d, port=%d\n",
 948                                 ret, portid);
 949                 }
 950
 951                 /* set the mtu to the maximum received packet size */
 952                 ret = rte_eth_dev_set_mtu(portid,
 953                         local_port_conf.rxmode.max_rx_pkt_len - MTU_OVERHEAD);
 954                 if (ret < 0) {
 955                         printf("\n");
 956                         rte_exit(EXIT_FAILURE, "Set MTU failed: "
 957                                 "err=%d, port=%d\n",
 958                         ret, portid);
 959                 }
 960
 961                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 962                                             &nb_txd);
 963                 if (ret < 0) {
 964                         printf("\n");
 965                         rte_exit(EXIT_FAILURE, "Cannot adjust number of "
 966                                 "descriptors: err=%d, port=%d\n", ret, portid);
 967                 }
 968
 969                 /* init one RX queue */
 970                 rxq_conf = dev_info.default_rxconf;
 971                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 972                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 973                                              socket, &rxq_conf,
 974                                              socket_direct_pool[socket]);
 975                 if (ret < 0) {
 976                         printf("\n");
 977                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: "
 978                                 "err=%d, port=%d\n",
 979                                 ret, portid);
 980                 }
 981
 982                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
 983                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
 984                 printf("\n");
 985
 986                 /* init one TX queue per couple (lcore,port) */
 987                 queueid = 0;
 988                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 989                         if (rte_lcore_is_enabled(lcore_id) == 0)
 990                                 continue;
 991
 992                         socket = (int) rte_lcore_to_socket_id(lcore_id);
 993                         printf("txq=%u,%d ", lcore_id, queueid);
 994                         fflush(stdout);
 995
 996                         txconf = &dev_info.default_txconf;
 997                         txconf->offloads = local_port_conf.txmode.offloads;
 998                         ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
 999                                                      socket, txconf);
1000                         if (ret < 0) {
1001                                 printf("\n");
1002                                 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: "
1003                                         "err=%d, port=%d\n", ret, portid);
1004                         }
1005
1006                         qconf = &lcore_queue_conf[lcore_id];
1007                         qconf->tx_queue_id[portid] = queueid;
1008                         queueid++;
1009                 }
1010
1011                 printf("\n");
1012         }
1013
1014         printf("\n");
1015
1016         /* start ports */
1017         RTE_ETH_FOREACH_DEV(portid) {
1018                 if ((enabled_port_mask & (1 << portid)) == 0) {
1019                         continue;
1020                 }
1021                 /* Start device */
1022                 ret = rte_eth_dev_start(portid);
1023                 if (ret < 0)
1024                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
1025                                 ret, portid);
1026
1027                 rte_eth_promiscuous_enable(portid);
1028
1029                 if (check_ptype(portid) == 0) {
1030                         rte_eth_add_rx_callback(portid, 0, cb_parse_ptype, NULL);
1031                         printf("Add Rx callback function to detect L3 packet type by SW :"
1032                                 " port = %d\n", portid);
1033                 }
1034         }
1035
1036         if (init_routing_table() < 0)
1037                 rte_exit(EXIT_FAILURE, "Cannot init routing table\n");
1038
1039         check_all_ports_link_status(enabled_port_mask);
1040
1041         /* launch per-lcore init on every lcore */
1042         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1043         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1044                 if (rte_eal_wait_lcore(lcore_id) < 0)
1045                         return -1;
1046         }
1047
1048         return 0;
1049 }