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         uint16_t port_out, ether_type;
 246         int32_t len2;
 247         uint64_t ol_flags;
 248         const struct rte_ether_hdr *eth;
 249
 250         ol_flags = 0;
 251         rxq = &qconf->rx_queue_list[queueid];
 252
 253         /* by default, send everything back to the source port */
 254         port_out = port_in;
 255
 256         /* save ether type of the incoming packet */
 257         eth = rte_pktmbuf_mtod(m, const struct rte_ether_hdr *);
 258         ether_type = eth->ether_type;
 259
 260         /* Remove the Ethernet header and trailer from the input packet */
 261         rte_pktmbuf_adj(m, (uint16_t)sizeof(struct rte_ether_hdr));
 262
 263         /* Build transmission burst */
 264         len = qconf->tx_mbufs[port_out].len;
 265
 266         /* if this is an IPv4 packet */
 267         if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
 268                 struct rte_ipv4_hdr *ip_hdr;
 269                 uint32_t ip_dst;
 270                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 271                 ip_hdr = rte_pktmbuf_mtod(m, struct rte_ipv4_hdr *);
 272                 ip_dst = rte_be_to_cpu_32(ip_hdr->dst_addr);
 273
 274                 /* Find destination port */
 275                 if (rte_lpm_lookup(rxq->lpm, ip_dst, &next_hop) == 0 &&
 276                                 (enabled_port_mask & 1 << next_hop) != 0) {
 277                         port_out = next_hop;
 278
 279                         /* Build transmission burst for new port */
 280                         len = qconf->tx_mbufs[port_out].len;
 281                 }
 282
 283                 /* if we don't need to do any fragmentation */
 284                 if (likely (IPV4_MTU_DEFAULT >= m->pkt_len)) {
 285                         qconf->tx_mbufs[port_out].m_table[len] = m;
 286                         len2 = 1;
 287                 } else {
 288                         len2 = rte_ipv4_fragment_packet(m,
 289                                 &qconf->tx_mbufs[port_out].m_table[len],
 290                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 291                                 IPV4_MTU_DEFAULT,
 292                                 rxq->direct_pool, rxq->indirect_pool);
 293
 294                         /* Free input packet */
 295                         rte_pktmbuf_free(m);
 296
 297                         /* request HW to regenerate IPv4 cksum */
 298                         ol_flags |= (PKT_TX_IPV4 | PKT_TX_IP_CKSUM);
 299
 300                         /* If we fail to fragment the packet */
 301                         if (unlikely (len2 < 0))
 302                                 return;
 303                 }
 304         } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
 305                 /* if this is an IPv6 packet */
 306                 struct rte_ipv6_hdr *ip_hdr;
 307
 308                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 309                 ip_hdr = rte_pktmbuf_mtod(m, struct rte_ipv6_hdr *);
 310
 311                 /* Find destination port */
 312                 if (rte_lpm6_lookup(rxq->lpm6, ip_hdr->dst_addr,
 313                                                 &next_hop) == 0 &&
 314                                 (enabled_port_mask & 1 << next_hop) != 0) {
 315                         port_out = next_hop;
 316
 317                         /* Build transmission burst for new port */
 318                         len = qconf->tx_mbufs[port_out].len;
 319                 }
 320
 321                 /* if we don't need to do any fragmentation */
 322                 if (likely (IPV6_MTU_DEFAULT >= m->pkt_len)) {
 323                         qconf->tx_mbufs[port_out].m_table[len] = m;
 324                         len2 = 1;
 325                 } else {
 326                         len2 = rte_ipv6_fragment_packet(m,
 327                                 &qconf->tx_mbufs[port_out].m_table[len],
 328                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 329                                 IPV6_MTU_DEFAULT,
 330                                 rxq->direct_pool, rxq->indirect_pool);
 331
 332                         /* Free input packet */
 333                         rte_pktmbuf_free(m);
 334
 335                         /* If we fail to fragment the packet */
 336                         if (unlikely (len2 < 0))
 337                                 return;
 338                 }
 339         }
 340         /* else, just forward the packet */
 341         else {
 342                 qconf->tx_mbufs[port_out].m_table[len] = m;
 343                 len2 = 1;
 344         }
 345
 346         for (i = len; i < len + len2; i ++) {
 347                 void *d_addr_bytes;
 348
 349                 m = qconf->tx_mbufs[port_out].m_table[i];
 350                 struct rte_ether_hdr *eth_hdr = (struct rte_ether_hdr *)
 351                         rte_pktmbuf_prepend(m,
 352                                 (uint16_t)sizeof(struct rte_ether_hdr));
 353                 if (eth_hdr == NULL) {
 354                         rte_panic("No headroom in mbuf.\n");
 355                 }
 356
 357                 m->ol_flags |= ol_flags;
 358                 m->l2_len = sizeof(struct rte_ether_hdr);
 359
 360                 /* 02:00:00:00:00:xx */
 361                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 362                 *((uint64_t *)d_addr_bytes) = 0x000000000002 +
 363                         ((uint64_t)port_out << 40);
 364
 365                 /* src addr */
 366                 rte_ether_addr_copy(&ports_eth_addr[port_out],
 367                                 &eth_hdr->s_addr);
 368                 eth_hdr->ether_type = ether_type;
 369         }
 370
 371         len += len2;
 372
 373         if (likely(len < MAX_PKT_BURST)) {
 374                 qconf->tx_mbufs[port_out].len = (uint16_t)len;
 375                 return;
 376         }
 377
 378         /* Transmit packets */
 379         send_burst(qconf, (uint16_t)len, port_out);
 380         qconf->tx_mbufs[port_out].len = 0;
 381 }
 382
 383 /* main processing loop */
 384 static int
 385 main_loop(__attribute__((unused)) void *dummy)
 386 {
 387         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 388         unsigned lcore_id;
 389         uint64_t prev_tsc, diff_tsc, cur_tsc;
 390         int i, j, nb_rx;
 391         uint16_t portid;
 392         struct lcore_queue_conf *qconf;
 393         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 394
 395         prev_tsc = 0;
 396
 397         lcore_id = rte_lcore_id();
 398         qconf = &lcore_queue_conf[lcore_id];
 399
 400         if (qconf->n_rx_queue == 0) {
 401                 RTE_LOG(INFO, IP_FRAG, "lcore %u has nothing to do\n", lcore_id);
 402                 return 0;
 403         }
 404
 405         RTE_LOG(INFO, IP_FRAG, "entering main loop on lcore %u\n", lcore_id);
 406
 407         for (i = 0; i < qconf->n_rx_queue; i++) {
 408
 409                 portid = qconf->rx_queue_list[i].portid;
 410                 RTE_LOG(INFO, IP_FRAG, " -- lcoreid=%u portid=%d\n", lcore_id,
 411                                 portid);
 412         }
 413
 414         while (1) {
 415
 416                 cur_tsc = rte_rdtsc();
 417
 418                 /*
 419                  * TX burst queue drain
 420                  */
 421                 diff_tsc = cur_tsc - prev_tsc;
 422                 if (unlikely(diff_tsc > drain_tsc)) {
 423
 424                         /*
 425                          * This could be optimized (use queueid instead of
 426                          * portid), but it is not called so often
 427                          */
 428                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 429                                 if (qconf->tx_mbufs[portid].len == 0)
 430                                         continue;
 431                                 send_burst(&lcore_queue_conf[lcore_id],
 432                                            qconf->tx_mbufs[portid].len,
 433                                            portid);
 434                                 qconf->tx_mbufs[portid].len = 0;
 435                         }
 436
 437                         prev_tsc = cur_tsc;
 438                 }
 439
 440                 /*
 441                  * Read packet from RX queues
 442                  */
 443                 for (i = 0; i < qconf->n_rx_queue; i++) {
 444
 445                         portid = qconf->rx_queue_list[i].portid;
 446                         nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 447                                                  MAX_PKT_BURST);
 448
 449                         /* Prefetch first packets */
 450                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 451                                 rte_prefetch0(rte_pktmbuf_mtod(
 452                                                 pkts_burst[j], void *));
 453                         }
 454
 455                         /* Prefetch and forward already prefetched packets */
 456                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 457                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 458                                                 j + PREFETCH_OFFSET], void *));
 459                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 460                         }
 461
 462                         /* Forward remaining prefetched packets */
 463                         for (; j < nb_rx; j++) {
 464                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 465                         }
 466                 }
 467         }
 468 }
 469
 470 /* display usage */
 471 static void
 472 print_usage(const char *prgname)
 473 {
 474         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 475                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 476                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n",
 477                prgname);
 478 }
 479
 480 static int
 481 parse_portmask(const char *portmask)
 482 {
 483         char *end = NULL;
 484         unsigned long pm;
 485
 486         /* parse hexadecimal string */
 487         pm = strtoul(portmask, &end, 16);
 488         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 489                 return -1;
 490
 491         if (pm == 0)
 492                 return -1;
 493
 494         return pm;
 495 }
 496
 497 static int
 498 parse_nqueue(const char *q_arg)
 499 {
 500         char *end = NULL;
 501         unsigned long n;
 502
 503         /* parse hexadecimal string */
 504         n = strtoul(q_arg, &end, 10);
 505         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 506                 return -1;
 507         if (n == 0)
 508                 return -1;
 509         if (n >= MAX_RX_QUEUE_PER_LCORE)
 510                 return -1;
 511
 512         return n;
 513 }
 514
 515 /* Parse the argument given in the command line of the application */
 516 static int
 517 parse_args(int argc, char **argv)
 518 {
 519         int opt, ret;
 520         char **argvopt;
 521         int option_index;
 522         char *prgname = argv[0];
 523         static struct option lgopts[] = {
 524                 {NULL, 0, 0, 0}
 525         };
 526
 527         argvopt = argv;
 528
 529         while ((opt = getopt_long(argc, argvopt, "p:q:",
 530                                   lgopts, &option_index)) != EOF) {
 531
 532                 switch (opt) {
 533                 /* portmask */
 534                 case 'p':
 535                         enabled_port_mask = parse_portmask(optarg);
 536                         if (enabled_port_mask < 0) {
 537                                 printf("invalid portmask\n");
 538                                 print_usage(prgname);
 539                                 return -1;
 540                         }
 541                         break;
 542
 543                 /* nqueue */
 544                 case 'q':
 545                         rx_queue_per_lcore = parse_nqueue(optarg);
 546                         if (rx_queue_per_lcore < 0) {
 547                                 printf("invalid queue number\n");
 548                                 print_usage(prgname);
 549                                 return -1;
 550                         }
 551                         break;
 552
 553                 /* long options */
 554                 case 0:
 555                         print_usage(prgname);
 556                         return -1;
 557
 558                 default:
 559                         print_usage(prgname);
 560                         return -1;
 561                 }
 562         }
 563
 564         if (enabled_port_mask == 0) {
 565                 printf("portmask not specified\n");
 566                 print_usage(prgname);
 567                 return -1;
 568         }
 569
 570         if (optind >= 0)
 571                 argv[optind-1] = prgname;
 572
 573         ret = optind-1;
 574         optind = 1; /* reset getopt lib */
 575         return ret;
 576 }
 577
 578 static void
 579 print_ethaddr(const char *name, struct rte_ether_addr *eth_addr)
 580 {
 581         char buf[RTE_ETHER_ADDR_FMT_SIZE];
 582         rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, eth_addr);
 583         printf("%s%s", name, buf);
 584 }
 585
 586 /* Check the link status of all ports in up to 9s, and print them finally */
 587 static void
 588 check_all_ports_link_status(uint32_t port_mask)
 589 {
 590 #define CHECK_INTERVAL 100 /* 100ms */
 591 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 592         uint16_t portid;
 593         uint8_t count, all_ports_up, print_flag = 0;
 594         struct rte_eth_link link;
 595
 596         printf("\nChecking link status");
 597         fflush(stdout);
 598         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 599                 all_ports_up = 1;
 600                 RTE_ETH_FOREACH_DEV(portid) {
 601                         if ((port_mask & (1 << portid)) == 0)
 602                                 continue;
 603                         memset(&link, 0, sizeof(link));
 604                         rte_eth_link_get_nowait(portid, &link);
 605                         /* print link status if flag set */
 606                         if (print_flag == 1) {
 607                                 if (link.link_status)
 608                                         printf(
 609                                         "Port%d Link Up .Speed %u Mbps - %s\n",
 610                                                 portid, link.link_speed,
 611                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 612                                         ("full-duplex") : ("half-duplex\n"));
 613                                 else
 614                                         printf("Port %d Link Down\n", portid);
 615                                 continue;
 616                         }
 617                         /* clear all_ports_up flag if any link down */
 618                         if (link.link_status == ETH_LINK_DOWN) {
 619                                 all_ports_up = 0;
 620                                 break;
 621                         }
 622                 }
 623                 /* after finally printing all link status, get out */
 624                 if (print_flag == 1)
 625                         break;
 626
 627                 if (all_ports_up == 0) {
 628                         printf(".");
 629                         fflush(stdout);
 630                         rte_delay_ms(CHECK_INTERVAL);
 631                 }
 632
 633                 /* set the print_flag if all ports up or timeout */
 634                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 635                         print_flag = 1;
 636                         printf("\ndone\n");
 637                 }
 638         }
 639 }
 640
 641 /* Check L3 packet type detection capablity of the NIC port */
 642 static int
 643 check_ptype(int portid)
 644 {
 645         int i, ret;
 646         int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
 647         uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
 648
 649         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
 650         if (ret <= 0)
 651                 return 0;
 652
 653         uint32_t ptypes[ret];
 654
 655         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
 656         for (i = 0; i < ret; ++i) {
 657                 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
 658                         ptype_l3_ipv4 = 1;
 659                 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
 660                         ptype_l3_ipv6 = 1;
 661         }
 662
 663         if (ptype_l3_ipv4 == 0)
 664                 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
 665
 666         if (ptype_l3_ipv6 == 0)
 667                 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
 668
 669         if (ptype_l3_ipv4 && ptype_l3_ipv6)
 670                 return 1;
 671
 672         return 0;
 673
 674 }
 675
 676 /* Parse packet type of a packet by SW */
 677 static inline void
 678 parse_ptype(struct rte_mbuf *m)
 679 {
 680         struct rte_ether_hdr *eth_hdr;
 681         uint32_t packet_type = RTE_PTYPE_UNKNOWN;
 682         uint16_t ether_type;
 683
 684         eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 685         ether_type = eth_hdr->ether_type;
 686         if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4))
 687                 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 688         else if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6))
 689                 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 690
 691         m->packet_type = packet_type;
 692 }
 693
 694 /* callback function to detect packet type for a queue of a port */
 695 static uint16_t
 696 cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
 697                    struct rte_mbuf *pkts[], uint16_t nb_pkts,
 698                    uint16_t max_pkts __rte_unused,
 699                    void *user_param __rte_unused)
 700 {
 701         uint16_t i;
 702
 703         for (i = 0; i < nb_pkts; ++i)
 704                 parse_ptype(pkts[i]);
 705
 706         return nb_pkts;
 707 }
 708
 709 static int
 710 init_routing_table(void)
 711 {
 712         struct rte_lpm *lpm;
 713         struct rte_lpm6 *lpm6;
 714         int socket, ret;
 715         unsigned i;
 716
 717         for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
 718                 if (socket_lpm[socket]) {
 719                         lpm = socket_lpm[socket];
 720                         /* populate the LPM table */
 721                         for (i = 0; i < RTE_DIM(l3fwd_ipv4_route_array); i++) {
 722                                 ret = rte_lpm_add(lpm,
 723                                         l3fwd_ipv4_route_array[i].ip,
 724                                         l3fwd_ipv4_route_array[i].depth,
 725                                         l3fwd_ipv4_route_array[i].if_out);
 726
 727                                 if (ret < 0) {
 728                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 729                                                 "LPM table\n", i);
 730                                         return -1;
 731                                 }
 732
 733                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv4_BYTES_FMT
 734                                                 "/%d (port %d)\n",
 735                                         socket,
 736                                         IPv4_BYTES(l3fwd_ipv4_route_array[i].ip),
 737                                         l3fwd_ipv4_route_array[i].depth,
 738                                         l3fwd_ipv4_route_array[i].if_out);
 739                         }
 740                 }
 741
 742                 if (socket_lpm6[socket]) {
 743                         lpm6 = socket_lpm6[socket];
 744                         /* populate the LPM6 table */
 745                         for (i = 0; i < RTE_DIM(l3fwd_ipv6_route_array); i++) {
 746                                 ret = rte_lpm6_add(lpm6,
 747                                         l3fwd_ipv6_route_array[i].ip,
 748                                         l3fwd_ipv6_route_array[i].depth,
 749                                         l3fwd_ipv6_route_array[i].if_out);
 750
 751                                 if (ret < 0) {
 752                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 753                                                 "LPM6 table\n", i);
 754                                         return -1;
 755                                 }
 756
 757                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv6_BYTES_FMT
 758                                                 "/%d (port %d)\n",
 759                                         socket,
 760                                         IPv6_BYTES(l3fwd_ipv6_route_array[i].ip),
 761                                         l3fwd_ipv6_route_array[i].depth,
 762                                         l3fwd_ipv6_route_array[i].if_out);
 763                         }
 764                 }
 765         }
 766         return 0;
 767 }
 768
 769 static int
 770 init_mem(void)
 771 {
 772         char buf[PATH_MAX];
 773         struct rte_mempool *mp;
 774         struct rte_lpm *lpm;
 775         struct rte_lpm6 *lpm6;
 776         struct rte_lpm_config lpm_config;
 777         int socket;
 778         unsigned lcore_id;
 779
 780         /* traverse through lcores and initialize structures on each socket */
 781
 782         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 783
 784                 if (rte_lcore_is_enabled(lcore_id) == 0)
 785                         continue;
 786
 787                 socket = rte_lcore_to_socket_id(lcore_id);
 788
 789                 if (socket == SOCKET_ID_ANY)
 790                         socket = 0;
 791
 792                 if (socket_direct_pool[socket] == NULL) {
 793                         RTE_LOG(INFO, IP_FRAG, "Creating direct mempool on socket %i\n",
 794                                         socket);
 795                         snprintf(buf, sizeof(buf), "pool_direct_%i", socket);
 796
 797                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32,
 798                                 0, RTE_MBUF_DEFAULT_BUF_SIZE, socket);
 799                         if (mp == NULL) {
 800                                 RTE_LOG(ERR, IP_FRAG, "Cannot create direct mempool\n");
 801                                 return -1;
 802                         }
 803                         socket_direct_pool[socket] = mp;
 804                 }
 805
 806                 if (socket_indirect_pool[socket] == NULL) {
 807                         RTE_LOG(INFO, IP_FRAG, "Creating indirect mempool on socket %i\n",
 808                                         socket);
 809                         snprintf(buf, sizeof(buf), "pool_indirect_%i", socket);
 810
 811                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32, 0, 0,
 812                                 socket);
 813                         if (mp == NULL) {
 814                                 RTE_LOG(ERR, IP_FRAG, "Cannot create indirect mempool\n");
 815                                 return -1;
 816                         }
 817                         socket_indirect_pool[socket] = mp;
 818                 }
 819
 820                 if (socket_lpm[socket] == NULL) {
 821                         RTE_LOG(INFO, IP_FRAG, "Creating LPM table on socket %i\n", socket);
 822                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 823
 824                         lpm_config.max_rules = LPM_MAX_RULES;
 825                         lpm_config.number_tbl8s = 256;
 826                         lpm_config.flags = 0;
 827
 828                         lpm = rte_lpm_create(buf, socket, &lpm_config);
 829                         if (lpm == NULL) {
 830                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 831                                 return -1;
 832                         }
 833                         socket_lpm[socket] = lpm;
 834                 }
 835
 836                 if (socket_lpm6[socket] == NULL) {
 837                         RTE_LOG(INFO, IP_FRAG, "Creating LPM6 table on socket %i\n", socket);
 838                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 839
 840                         lpm6 = rte_lpm6_create(buf, socket, &lpm6_config);
 841                         if (lpm6 == NULL) {
 842                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 843                                 return -1;
 844                         }
 845                         socket_lpm6[socket] = lpm6;
 846                 }
 847         }
 848
 849         return 0;
 850 }
 851
 852 int
 853 main(int argc, char **argv)
 854 {
 855         struct lcore_queue_conf *qconf;
 856         struct rte_eth_dev_info dev_info;
 857         struct rte_eth_txconf *txconf;
 858         struct rx_queue *rxq;
 859         int socket, ret;
 860         uint16_t nb_ports;
 861         uint16_t queueid = 0;
 862         unsigned lcore_id = 0, rx_lcore_id = 0;
 863         uint32_t n_tx_queue, nb_lcores;
 864         uint16_t portid;
 865
 866         /* init EAL */
 867         ret = rte_eal_init(argc, argv);
 868         if (ret < 0)
 869                 rte_exit(EXIT_FAILURE, "rte_eal_init failed");
 870         argc -= ret;
 871         argv += ret;
 872
 873         /* parse application arguments (after the EAL ones) */
 874         ret = parse_args(argc, argv);
 875         if (ret < 0)
 876                 rte_exit(EXIT_FAILURE, "Invalid arguments");
 877
 878         nb_ports = rte_eth_dev_count_avail();
 879         if (nb_ports == 0)
 880                 rte_exit(EXIT_FAILURE, "No ports found!\n");
 881
 882         nb_lcores = rte_lcore_count();
 883
 884         /* initialize structures (mempools, lpm etc.) */
 885         if (init_mem() < 0)
 886                 rte_panic("Cannot initialize memory structures!\n");
 887
 888         /* check if portmask has non-existent ports */
 889         if (enabled_port_mask & ~(RTE_LEN2MASK(nb_ports, unsigned)))
 890                 rte_exit(EXIT_FAILURE, "Non-existent ports in portmask!\n");
 891
 892         /* initialize all ports */
 893         RTE_ETH_FOREACH_DEV(portid) {
 894                 struct rte_eth_conf local_port_conf = port_conf;
 895                 struct rte_eth_rxconf rxq_conf;
 896
 897                 /* skip ports that are not enabled */
 898                 if ((enabled_port_mask & (1 << portid)) == 0) {
 899                         printf("Skipping disabled port %d\n", portid);
 900                         continue;
 901                 }
 902
 903                 qconf = &lcore_queue_conf[rx_lcore_id];
 904
 905                 /* limit the frame size to the maximum supported by NIC */
 906                 rte_eth_dev_info_get(portid, &dev_info);
 907                 local_port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
 908                     dev_info.max_rx_pktlen,
 909                     local_port_conf.rxmode.max_rx_pkt_len);
 910
 911                 /* get the lcore_id for this port */
 912                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 913                        qconf->n_rx_queue == (unsigned)rx_queue_per_lcore) {
 914
 915                         rx_lcore_id ++;
 916                         if (rx_lcore_id >= RTE_MAX_LCORE)
 917                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 918
 919                         qconf = &lcore_queue_conf[rx_lcore_id];
 920                 }
 921
 922                 socket = (int) rte_lcore_to_socket_id(rx_lcore_id);
 923                 if (socket == SOCKET_ID_ANY)
 924                         socket = 0;
 925
 926                 rxq = &qconf->rx_queue_list[qconf->n_rx_queue];
 927                 rxq->portid = portid;
 928                 rxq->direct_pool = socket_direct_pool[socket];
 929                 rxq->indirect_pool = socket_indirect_pool[socket];
 930                 rxq->lpm = socket_lpm[socket];
 931                 rxq->lpm6 = socket_lpm6[socket];
 932                 qconf->n_rx_queue++;
 933
 934                 /* init port */
 935                 printf("Initializing port %d on lcore %u...", portid,
 936                        rx_lcore_id);
 937                 fflush(stdout);
 938
 939                 n_tx_queue = nb_lcores;
 940                 if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
 941                         n_tx_queue = MAX_TX_QUEUE_PER_PORT;
 942                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 943                         local_port_conf.txmode.offloads |=
 944                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 945                 ret = rte_eth_dev_configure(portid, 1, (uint16_t)n_tx_queue,
 946                                             &local_port_conf);
 947                 if (ret < 0) {
 948                         printf("\n");
 949                         rte_exit(EXIT_FAILURE, "Cannot configure device: "
 950                                 "err=%d, port=%d\n",
 951                                 ret, portid);
 952                 }
 953
 954                 /* set the mtu to the maximum received packet size */
 955                 ret = rte_eth_dev_set_mtu(portid,
 956                         local_port_conf.rxmode.max_rx_pkt_len - MTU_OVERHEAD);
 957                 if (ret < 0) {
 958                         printf("\n");
 959                         rte_exit(EXIT_FAILURE, "Set MTU failed: "
 960                                 "err=%d, port=%d\n",
 961                         ret, portid);
 962                 }
 963
 964                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 965                                             &nb_txd);
 966                 if (ret < 0) {
 967                         printf("\n");
 968                         rte_exit(EXIT_FAILURE, "Cannot adjust number of "
 969                                 "descriptors: err=%d, port=%d\n", ret, portid);
 970                 }
 971
 972                 /* init one RX queue */
 973                 rxq_conf = dev_info.default_rxconf;
 974                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 975                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 976                                              socket, &rxq_conf,
 977                                              socket_direct_pool[socket]);
 978                 if (ret < 0) {
 979                         printf("\n");
 980                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: "
 981                                 "err=%d, port=%d\n",
 982                                 ret, portid);
 983                 }
 984
 985                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
 986                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
 987                 printf("\n");
 988
 989                 /* init one TX queue per couple (lcore,port) */
 990                 queueid = 0;
 991                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 992                         if (rte_lcore_is_enabled(lcore_id) == 0)
 993                                 continue;
 994
 995                         if (queueid >= dev_info.nb_tx_queues)
 996                                 break;
 997
 998                         socket = (int) rte_lcore_to_socket_id(lcore_id);
 999                         printf("txq=%u,%d ", lcore_id, queueid);
1000                         fflush(stdout);
1001
1002                         txconf = &dev_info.default_txconf;
1003                         txconf->offloads = local_port_conf.txmode.offloads;
1004                         ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
1005                                                      socket, txconf);
1006                         if (ret < 0) {
1007                                 printf("\n");
1008                                 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: "
1009                                         "err=%d, port=%d\n", ret, portid);
1010                         }
1011
1012                         qconf = &lcore_queue_conf[lcore_id];
1013                         qconf->tx_queue_id[portid] = queueid;
1014                         queueid++;
1015                 }
1016
1017                 printf("\n");
1018         }
1019
1020         printf("\n");
1021
1022         /* start ports */
1023         RTE_ETH_FOREACH_DEV(portid) {
1024                 if ((enabled_port_mask & (1 << portid)) == 0) {
1025                         continue;
1026                 }
1027                 /* Start device */
1028                 ret = rte_eth_dev_start(portid);
1029                 if (ret < 0)
1030                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
1031                                 ret, portid);
1032
1033                 rte_eth_promiscuous_enable(portid);
1034
1035                 if (check_ptype(portid) == 0) {
1036                         rte_eth_add_rx_callback(portid, 0, cb_parse_ptype, NULL);
1037                         printf("Add Rx callback function to detect L3 packet type by SW :"
1038                                 " port = %d\n", portid);
1039                 }
1040         }
1041
1042         if (init_routing_table() < 0)
1043                 rte_exit(EXIT_FAILURE, "Cannot init routing table\n");
1044
1045         check_all_ports_link_status(enabled_port_mask);
1046
1047         /* launch per-lcore init on every lcore */
1048         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1049         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1050                 if (rte_eal_wait_lcore(lcore_id) < 0)
1051                         return -1;
1052         }
1053
1054         return 0;
1055 }