examples/ip_fragmentation/main.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <stdint.h>
  37 #include <inttypes.h>
  38 #include <sys/types.h>
  39 #include <sys/param.h>
  40 #include <string.h>
  41 #include <sys/queue.h>
  42 #include <stdarg.h>
  43 #include <errno.h>
  44 #include <getopt.h>
  45
  46 #include <rte_common.h>
  47 #include <rte_byteorder.h>
  48 #include <rte_log.h>
  49 #include <rte_memory.h>
  50 #include <rte_memcpy.h>
  51 #include <rte_memzone.h>
  52 #include <rte_eal.h>
  53 #include <rte_launch.h>
  54 #include <rte_atomic.h>
  55 #include <rte_cycles.h>
  56 #include <rte_prefetch.h>
  57 #include <rte_lcore.h>
  58 #include <rte_per_lcore.h>
  59 #include <rte_branch_prediction.h>
  60 #include <rte_interrupts.h>
  61 #include <rte_pci.h>
  62 #include <rte_random.h>
  63 #include <rte_debug.h>
  64 #include <rte_ether.h>
  65 #include <rte_ethdev.h>
  66 #include <rte_mempool.h>
  67 #include <rte_mbuf.h>
  68 #include <rte_lpm.h>
  69 #include <rte_lpm6.h>
  70 #include <rte_ip.h>
  71 #include <rte_string_fns.h>
  72
  73 #include <rte_ip_frag.h>
  74
  75 #define RTE_LOGTYPE_IP_FRAG RTE_LOGTYPE_USER1
  76
  77 /* allow max jumbo frame 9.5 KB */
  78 #define JUMBO_FRAME_MAX_SIZE    0x2600
  79
  80 #define ROUNDUP_DIV(a, b)       (((a) + (b) - 1) / (b))
  81
  82 /*
  83  * Default byte size for the IPv6 Maximum Transfer Unit (MTU).
  84  * This value includes the size of IPv6 header.
  85  */
  86 #define IPV4_MTU_DEFAULT        ETHER_MTU
  87 #define IPV6_MTU_DEFAULT        ETHER_MTU
  88
  89 /*
  90  * Default payload in bytes for the IPv6 packet.
  91  */
  92 #define IPV4_DEFAULT_PAYLOAD    (IPV4_MTU_DEFAULT - sizeof(struct ipv4_hdr))
  93 #define IPV6_DEFAULT_PAYLOAD    (IPV6_MTU_DEFAULT - sizeof(struct ipv6_hdr))
  94
  95 /*
  96  * Max number of fragments per packet expected - defined by config file.
  97  */
  98 #define MAX_PACKET_FRAG RTE_LIBRTE_IP_FRAG_MAX_FRAG
  99
 100 #define NB_MBUF   8192
 101
 102 #define MAX_PKT_BURST   32
 103 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 104
 105 /* Configure how many packets ahead to prefetch, when reading packets */
 106 #define PREFETCH_OFFSET 3
 107
 108 /*
 109  * Configurable number of RX/TX ring descriptors
 110  */
 111 #define RTE_TEST_RX_DESC_DEFAULT 128
 112 #define RTE_TEST_TX_DESC_DEFAULT 512
 113 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
 114 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
 115
 116 /* ethernet addresses of ports */
 117 static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
 118
 119 #ifndef IPv4_BYTES
 120 #define IPv4_BYTES_FMT "%" PRIu8 ".%" PRIu8 ".%" PRIu8 ".%" PRIu8
 121 #define IPv4_BYTES(addr) \
 122                 (uint8_t) (((addr) >> 24) & 0xFF),\
 123                 (uint8_t) (((addr) >> 16) & 0xFF),\
 124                 (uint8_t) (((addr) >> 8) & 0xFF),\
 125                 (uint8_t) ((addr) & 0xFF)
 126 #endif
 127
 128 #ifndef IPv6_BYTES
 129 #define IPv6_BYTES_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"\
 130                        "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
 131 #define IPv6_BYTES(addr) \
 132         addr[0],  addr[1], addr[2],  addr[3], \
 133         addr[4],  addr[5], addr[6],  addr[7], \
 134         addr[8],  addr[9], addr[10], addr[11],\
 135         addr[12], addr[13],addr[14], addr[15]
 136 #endif
 137
 138 #define IPV6_ADDR_LEN 16
 139
 140 /* mask of enabled ports */
 141 static int enabled_port_mask = 0;
 142
 143 static int rx_queue_per_lcore = 1;
 144
 145 #define MBUF_TABLE_SIZE  (2 * MAX(MAX_PKT_BURST, MAX_PACKET_FRAG))
 146
 147 struct mbuf_table {
 148         uint16_t len;
 149         struct rte_mbuf *m_table[MBUF_TABLE_SIZE];
 150 };
 151
 152 struct rx_queue {
 153         struct rte_mempool *direct_pool;
 154         struct rte_mempool *indirect_pool;
 155         struct rte_lpm *lpm;
 156         struct rte_lpm6 *lpm6;
 157         uint8_t portid;
 158 };
 159
 160 #define MAX_RX_QUEUE_PER_LCORE 16
 161 #define MAX_TX_QUEUE_PER_PORT 16
 162 struct lcore_queue_conf {
 163         uint16_t n_rx_queue;
 164         uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
 165         struct rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 166         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 167 } __rte_cache_aligned;
 168 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 169
 170 static struct rte_eth_conf port_conf = {
 171         .rxmode = {
 172                 .max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
 173                 .split_hdr_size = 0,
 174                 .header_split   = 0, /**< Header Split disabled */
 175                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
 176                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 177                 .jumbo_frame    = 1, /**< Jumbo Frame Support enabled */
 178                 .hw_strip_crc   = 1, /**< CRC stripped by hardware */
 179         },
 180         .txmode = {
 181                 .mq_mode = ETH_MQ_TX_NONE,
 182         },
 183 };
 184
 185 /*
 186  * IPv4 forwarding table
 187  */
 188 struct l3fwd_ipv4_route {
 189         uint32_t ip;
 190         uint8_t  depth;
 191         uint8_t  if_out;
 192 };
 193
 194 struct l3fwd_ipv4_route l3fwd_ipv4_route_array[] = {
 195                 {IPv4(100,10,0,0), 16, 0},
 196                 {IPv4(100,20,0,0), 16, 1},
 197                 {IPv4(100,30,0,0), 16, 2},
 198                 {IPv4(100,40,0,0), 16, 3},
 199                 {IPv4(100,50,0,0), 16, 4},
 200                 {IPv4(100,60,0,0), 16, 5},
 201                 {IPv4(100,70,0,0), 16, 6},
 202                 {IPv4(100,80,0,0), 16, 7},
 203 };
 204
 205 /*
 206  * IPv6 forwarding table
 207  */
 208
 209 struct l3fwd_ipv6_route {
 210         uint8_t ip[IPV6_ADDR_LEN];
 211         uint8_t depth;
 212         uint8_t if_out;
 213 };
 214
 215 static struct l3fwd_ipv6_route l3fwd_ipv6_route_array[] = {
 216         {{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 0},
 217         {{2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 1},
 218         {{3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 2},
 219         {{4,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 3},
 220         {{5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 4},
 221         {{6,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 5},
 222         {{7,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 6},
 223         {{8,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 7},
 224 };
 225
 226 #define LPM_MAX_RULES         1024
 227 #define LPM6_MAX_RULES         1024
 228 #define LPM6_NUMBER_TBL8S (1 << 16)
 229
 230 struct rte_lpm6_config lpm6_config = {
 231                 .max_rules = LPM6_MAX_RULES,
 232                 .number_tbl8s = LPM6_NUMBER_TBL8S,
 233                 .flags = 0
 234 };
 235
 236 static struct rte_mempool *socket_direct_pool[RTE_MAX_NUMA_NODES];
 237 static struct rte_mempool *socket_indirect_pool[RTE_MAX_NUMA_NODES];
 238 static struct rte_lpm *socket_lpm[RTE_MAX_NUMA_NODES];
 239 static struct rte_lpm6 *socket_lpm6[RTE_MAX_NUMA_NODES];
 240
 241 /* Send burst of packets on an output interface */
 242 static inline int
 243 send_burst(struct lcore_queue_conf *qconf, uint16_t n, uint8_t port)
 244 {
 245         struct rte_mbuf **m_table;
 246         int ret;
 247         uint16_t queueid;
 248
 249         queueid = qconf->tx_queue_id[port];
 250         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 251
 252         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 253         if (unlikely(ret < n)) {
 254                 do {
 255                         rte_pktmbuf_free(m_table[ret]);
 256                 } while (++ret < n);
 257         }
 258
 259         return 0;
 260 }
 261
 262 static inline void
 263 l3fwd_simple_forward(struct rte_mbuf *m, struct lcore_queue_conf *qconf,
 264                 uint8_t queueid, uint8_t port_in)
 265 {
 266         struct rx_queue *rxq;
 267         uint32_t i, len, next_hop;
 268         uint8_t port_out, ipv6;
 269         int32_t len2;
 270
 271         ipv6 = 0;
 272         rxq = &qconf->rx_queue_list[queueid];
 273
 274         /* by default, send everything back to the source port */
 275         port_out = port_in;
 276
 277         /* Remove the Ethernet header and trailer from the input packet */
 278         rte_pktmbuf_adj(m, (uint16_t)sizeof(struct ether_hdr));
 279
 280         /* Build transmission burst */
 281         len = qconf->tx_mbufs[port_out].len;
 282
 283         /* if this is an IPv4 packet */
 284         if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
 285                 struct ipv4_hdr *ip_hdr;
 286                 uint32_t ip_dst;
 287                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 288                 ip_hdr = rte_pktmbuf_mtod(m, struct ipv4_hdr *);
 289                 ip_dst = rte_be_to_cpu_32(ip_hdr->dst_addr);
 290
 291                 /* Find destination port */
 292                 if (rte_lpm_lookup(rxq->lpm, ip_dst, &next_hop) == 0 &&
 293                                 (enabled_port_mask & 1 << next_hop) != 0) {
 294                         port_out = next_hop;
 295
 296                         /* Build transmission burst for new port */
 297                         len = qconf->tx_mbufs[port_out].len;
 298                 }
 299
 300                 /* if we don't need to do any fragmentation */
 301                 if (likely (IPV4_MTU_DEFAULT >= m->pkt_len)) {
 302                         qconf->tx_mbufs[port_out].m_table[len] = m;
 303                         len2 = 1;
 304                 } else {
 305                         len2 = rte_ipv4_fragment_packet(m,
 306                                 &qconf->tx_mbufs[port_out].m_table[len],
 307                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 308                                 IPV4_MTU_DEFAULT,
 309                                 rxq->direct_pool, rxq->indirect_pool);
 310
 311                         /* Free input packet */
 312                         rte_pktmbuf_free(m);
 313
 314                         /* If we fail to fragment the packet */
 315                         if (unlikely (len2 < 0))
 316                                 return;
 317                 }
 318         } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
 319                 /* if this is an IPv6 packet */
 320                 struct ipv6_hdr *ip_hdr;
 321
 322                 ipv6 = 1;
 323
 324                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 325                 ip_hdr = rte_pktmbuf_mtod(m, struct ipv6_hdr *);
 326
 327                 /* Find destination port */
 328                 if (rte_lpm6_lookup(rxq->lpm6, ip_hdr->dst_addr,
 329                                                 &next_hop) == 0 &&
 330                                 (enabled_port_mask & 1 << next_hop) != 0) {
 331                         port_out = next_hop;
 332
 333                         /* Build transmission burst for new port */
 334                         len = qconf->tx_mbufs[port_out].len;
 335                 }
 336
 337                 /* if we don't need to do any fragmentation */
 338                 if (likely (IPV6_MTU_DEFAULT >= m->pkt_len)) {
 339                         qconf->tx_mbufs[port_out].m_table[len] = m;
 340                         len2 = 1;
 341                 } else {
 342                         len2 = rte_ipv6_fragment_packet(m,
 343                                 &qconf->tx_mbufs[port_out].m_table[len],
 344                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 345                                 IPV6_MTU_DEFAULT,
 346                                 rxq->direct_pool, rxq->indirect_pool);
 347
 348                         /* Free input packet */
 349                         rte_pktmbuf_free(m);
 350
 351                         /* If we fail to fragment the packet */
 352                         if (unlikely (len2 < 0))
 353                                 return;
 354                 }
 355         }
 356         /* else, just forward the packet */
 357         else {
 358                 qconf->tx_mbufs[port_out].m_table[len] = m;
 359                 len2 = 1;
 360         }
 361
 362         for (i = len; i < len + len2; i ++) {
 363                 void *d_addr_bytes;
 364
 365                 m = qconf->tx_mbufs[port_out].m_table[i];
 366                 struct ether_hdr *eth_hdr = (struct ether_hdr *)
 367                         rte_pktmbuf_prepend(m, (uint16_t)sizeof(struct ether_hdr));
 368                 if (eth_hdr == NULL) {
 369                         rte_panic("No headroom in mbuf.\n");
 370                 }
 371
 372                 m->l2_len = sizeof(struct ether_hdr);
 373
 374                 /* 02:00:00:00:00:xx */
 375                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 376                 *((uint64_t *)d_addr_bytes) = 0x000000000002 + ((uint64_t)port_out << 40);
 377
 378                 /* src addr */
 379                 ether_addr_copy(&ports_eth_addr[port_out], &eth_hdr->s_addr);
 380                 if (ipv6)
 381                         eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv6);
 382                 else
 383                         eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv4);
 384         }
 385
 386         len += len2;
 387
 388         if (likely(len < MAX_PKT_BURST)) {
 389                 qconf->tx_mbufs[port_out].len = (uint16_t)len;
 390                 return;
 391         }
 392
 393         /* Transmit packets */
 394         send_burst(qconf, (uint16_t)len, port_out);
 395         qconf->tx_mbufs[port_out].len = 0;
 396 }
 397
 398 /* main processing loop */
 399 static int
 400 main_loop(__attribute__((unused)) void *dummy)
 401 {
 402         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 403         unsigned lcore_id;
 404         uint64_t prev_tsc, diff_tsc, cur_tsc;
 405         int i, j, nb_rx;
 406         uint8_t portid;
 407         struct lcore_queue_conf *qconf;
 408         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 409
 410         prev_tsc = 0;
 411
 412         lcore_id = rte_lcore_id();
 413         qconf = &lcore_queue_conf[lcore_id];
 414
 415         if (qconf->n_rx_queue == 0) {
 416                 RTE_LOG(INFO, IP_FRAG, "lcore %u has nothing to do\n", lcore_id);
 417                 return 0;
 418         }
 419
 420         RTE_LOG(INFO, IP_FRAG, "entering main loop on lcore %u\n", lcore_id);
 421
 422         for (i = 0; i < qconf->n_rx_queue; i++) {
 423
 424                 portid = qconf->rx_queue_list[i].portid;
 425                 RTE_LOG(INFO, IP_FRAG, " -- lcoreid=%u portid=%d\n", lcore_id,
 426                                 (int) portid);
 427         }
 428
 429         while (1) {
 430
 431                 cur_tsc = rte_rdtsc();
 432
 433                 /*
 434                  * TX burst queue drain
 435                  */
 436                 diff_tsc = cur_tsc - prev_tsc;
 437                 if (unlikely(diff_tsc > drain_tsc)) {
 438
 439                         /*
 440                          * This could be optimized (use queueid instead of
 441                          * portid), but it is not called so often
 442                          */
 443                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 444                                 if (qconf->tx_mbufs[portid].len == 0)
 445                                         continue;
 446                                 send_burst(&lcore_queue_conf[lcore_id],
 447                                            qconf->tx_mbufs[portid].len,
 448                                            portid);
 449                                 qconf->tx_mbufs[portid].len = 0;
 450                         }
 451
 452                         prev_tsc = cur_tsc;
 453                 }
 454
 455                 /*
 456                  * Read packet from RX queues
 457                  */
 458                 for (i = 0; i < qconf->n_rx_queue; i++) {
 459
 460                         portid = qconf->rx_queue_list[i].portid;
 461                         nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 462                                                  MAX_PKT_BURST);
 463
 464                         /* Prefetch first packets */
 465                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 466                                 rte_prefetch0(rte_pktmbuf_mtod(
 467                                                 pkts_burst[j], void *));
 468                         }
 469
 470                         /* Prefetch and forward already prefetched packets */
 471                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 472                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 473                                                 j + PREFETCH_OFFSET], void *));
 474                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 475                         }
 476
 477                         /* Forward remaining prefetched packets */
 478                         for (; j < nb_rx; j++) {
 479                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 480                         }
 481                 }
 482         }
 483 }
 484
 485 /* display usage */
 486 static void
 487 print_usage(const char *prgname)
 488 {
 489         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 490                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 491                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n",
 492                prgname);
 493 }
 494
 495 static int
 496 parse_portmask(const char *portmask)
 497 {
 498         char *end = NULL;
 499         unsigned long pm;
 500
 501         /* parse hexadecimal string */
 502         pm = strtoul(portmask, &end, 16);
 503         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 504                 return -1;
 505
 506         if (pm == 0)
 507                 return -1;
 508
 509         return pm;
 510 }
 511
 512 static int
 513 parse_nqueue(const char *q_arg)
 514 {
 515         char *end = NULL;
 516         unsigned long n;
 517
 518         /* parse hexadecimal string */
 519         n = strtoul(q_arg, &end, 10);
 520         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 521                 return -1;
 522         if (n == 0)
 523                 return -1;
 524         if (n >= MAX_RX_QUEUE_PER_LCORE)
 525                 return -1;
 526
 527         return n;
 528 }
 529
 530 /* Parse the argument given in the command line of the application */
 531 static int
 532 parse_args(int argc, char **argv)
 533 {
 534         int opt, ret;
 535         char **argvopt;
 536         int option_index;
 537         char *prgname = argv[0];
 538         static struct option lgopts[] = {
 539                 {NULL, 0, 0, 0}
 540         };
 541
 542         argvopt = argv;
 543
 544         while ((opt = getopt_long(argc, argvopt, "p:q:",
 545                                   lgopts, &option_index)) != EOF) {
 546
 547                 switch (opt) {
 548                 /* portmask */
 549                 case 'p':
 550                         enabled_port_mask = parse_portmask(optarg);
 551                         if (enabled_port_mask < 0) {
 552                                 printf("invalid portmask\n");
 553                                 print_usage(prgname);
 554                                 return -1;
 555                         }
 556                         break;
 557
 558                 /* nqueue */
 559                 case 'q':
 560                         rx_queue_per_lcore = parse_nqueue(optarg);
 561                         if (rx_queue_per_lcore < 0) {
 562                                 printf("invalid queue number\n");
 563                                 print_usage(prgname);
 564                                 return -1;
 565                         }
 566                         break;
 567
 568                 /* long options */
 569                 case 0:
 570                         print_usage(prgname);
 571                         return -1;
 572
 573                 default:
 574                         print_usage(prgname);
 575                         return -1;
 576                 }
 577         }
 578
 579         if (enabled_port_mask == 0) {
 580                 printf("portmask not specified\n");
 581                 print_usage(prgname);
 582                 return -1;
 583         }
 584
 585         if (optind >= 0)
 586                 argv[optind-1] = prgname;
 587
 588         ret = optind-1;
 589         optind = 1; /* reset getopt lib */
 590         return ret;
 591 }
 592
 593 static void
 594 print_ethaddr(const char *name, struct ether_addr *eth_addr)
 595 {
 596         char buf[ETHER_ADDR_FMT_SIZE];
 597         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
 598         printf("%s%s", name, buf);
 599 }
 600
 601 /* Check the link status of all ports in up to 9s, and print them finally */
 602 static void
 603 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 604 {
 605 #define CHECK_INTERVAL 100 /* 100ms */
 606 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 607         uint8_t portid, count, all_ports_up, print_flag = 0;
 608         struct rte_eth_link link;
 609
 610         printf("\nChecking link status");
 611         fflush(stdout);
 612         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 613                 all_ports_up = 1;
 614                 for (portid = 0; portid < port_num; portid++) {
 615                         if ((port_mask & (1 << portid)) == 0)
 616                                 continue;
 617                         memset(&link, 0, sizeof(link));
 618                         rte_eth_link_get_nowait(portid, &link);
 619                         /* print link status if flag set */
 620                         if (print_flag == 1) {
 621                                 if (link.link_status)
 622                                         printf("Port %d Link Up - speed %u "
 623                                                 "Mbps - %s\n", (uint8_t)portid,
 624                                                 (unsigned)link.link_speed,
 625                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 626                                         ("full-duplex") : ("half-duplex\n"));
 627                                 else
 628                                         printf("Port %d Link Down\n",
 629                                                         (uint8_t)portid);
 630                                 continue;
 631                         }
 632                         /* clear all_ports_up flag if any link down */
 633                         if (link.link_status == ETH_LINK_DOWN) {
 634                                 all_ports_up = 0;
 635                                 break;
 636                         }
 637                 }
 638                 /* after finally printing all link status, get out */
 639                 if (print_flag == 1)
 640                         break;
 641
 642                 if (all_ports_up == 0) {
 643                         printf(".");
 644                         fflush(stdout);
 645                         rte_delay_ms(CHECK_INTERVAL);
 646                 }
 647
 648                 /* set the print_flag if all ports up or timeout */
 649                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 650                         print_flag = 1;
 651                         printf("\ndone\n");
 652                 }
 653         }
 654 }
 655
 656 /* Check L3 packet type detection capablity of the NIC port */
 657 static int
 658 check_ptype(int portid)
 659 {
 660         int i, ret;
 661         int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
 662         uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
 663
 664         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
 665         if (ret <= 0)
 666                 return 0;
 667
 668         uint32_t ptypes[ret];
 669
 670         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
 671         for (i = 0; i < ret; ++i) {
 672                 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
 673                         ptype_l3_ipv4 = 1;
 674                 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
 675                         ptype_l3_ipv6 = 1;
 676         }
 677
 678         if (ptype_l3_ipv4 == 0)
 679                 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
 680
 681         if (ptype_l3_ipv6 == 0)
 682                 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
 683
 684         if (ptype_l3_ipv4 && ptype_l3_ipv6)
 685                 return 1;
 686
 687         return 0;
 688
 689 }
 690
 691 /* Parse packet type of a packet by SW */
 692 static inline void
 693 parse_ptype(struct rte_mbuf *m)
 694 {
 695         struct ether_hdr *eth_hdr;
 696         uint32_t packet_type = RTE_PTYPE_UNKNOWN;
 697         uint16_t ether_type;
 698
 699         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 700         ether_type = eth_hdr->ether_type;
 701         if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4))
 702                 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 703         else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6))
 704                 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 705
 706         m->packet_type = packet_type;
 707 }
 708
 709 /* callback function to detect packet type for a queue of a port */
 710 static uint16_t
 711 cb_parse_ptype(uint8_t port __rte_unused, uint16_t queue __rte_unused,
 712                    struct rte_mbuf *pkts[], uint16_t nb_pkts,
 713                    uint16_t max_pkts __rte_unused,
 714                    void *user_param __rte_unused)
 715 {
 716         uint16_t i;
 717
 718         for (i = 0; i < nb_pkts; ++i)
 719                 parse_ptype(pkts[i]);
 720
 721         return nb_pkts;
 722 }
 723
 724 static int
 725 init_routing_table(void)
 726 {
 727         struct rte_lpm *lpm;
 728         struct rte_lpm6 *lpm6;
 729         int socket, ret;
 730         unsigned i;
 731
 732         for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
 733                 if (socket_lpm[socket]) {
 734                         lpm = socket_lpm[socket];
 735                         /* populate the LPM table */
 736                         for (i = 0; i < RTE_DIM(l3fwd_ipv4_route_array); i++) {
 737                                 ret = rte_lpm_add(lpm,
 738                                         l3fwd_ipv4_route_array[i].ip,
 739                                         l3fwd_ipv4_route_array[i].depth,
 740                                         l3fwd_ipv4_route_array[i].if_out);
 741
 742                                 if (ret < 0) {
 743                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 744                                                 "LPM table\n", i);
 745                                         return -1;
 746                                 }
 747
 748                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv4_BYTES_FMT
 749                                                 "/%d (port %d)\n",
 750                                         socket,
 751                                         IPv4_BYTES(l3fwd_ipv4_route_array[i].ip),
 752                                         l3fwd_ipv4_route_array[i].depth,
 753                                         l3fwd_ipv4_route_array[i].if_out);
 754                         }
 755                 }
 756
 757                 if (socket_lpm6[socket]) {
 758                         lpm6 = socket_lpm6[socket];
 759                         /* populate the LPM6 table */
 760                         for (i = 0; i < RTE_DIM(l3fwd_ipv6_route_array); i++) {
 761                                 ret = rte_lpm6_add(lpm6,
 762                                         l3fwd_ipv6_route_array[i].ip,
 763                                         l3fwd_ipv6_route_array[i].depth,
 764                                         l3fwd_ipv6_route_array[i].if_out);
 765
 766                                 if (ret < 0) {
 767                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 768                                                 "LPM6 table\n", i);
 769                                         return -1;
 770                                 }
 771
 772                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv6_BYTES_FMT
 773                                                 "/%d (port %d)\n",
 774                                         socket,
 775                                         IPv6_BYTES(l3fwd_ipv6_route_array[i].ip),
 776                                         l3fwd_ipv6_route_array[i].depth,
 777                                         l3fwd_ipv6_route_array[i].if_out);
 778                         }
 779                 }
 780         }
 781         return 0;
 782 }
 783
 784 static int
 785 init_mem(void)
 786 {
 787         char buf[PATH_MAX];
 788         struct rte_mempool *mp;
 789         struct rte_lpm *lpm;
 790         struct rte_lpm6 *lpm6;
 791         struct rte_lpm_config lpm_config;
 792         int socket;
 793         unsigned lcore_id;
 794
 795         /* traverse through lcores and initialize structures on each socket */
 796
 797         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 798
 799                 if (rte_lcore_is_enabled(lcore_id) == 0)
 800                         continue;
 801
 802                 socket = rte_lcore_to_socket_id(lcore_id);
 803
 804                 if (socket == SOCKET_ID_ANY)
 805                         socket = 0;
 806
 807                 if (socket_direct_pool[socket] == NULL) {
 808                         RTE_LOG(INFO, IP_FRAG, "Creating direct mempool on socket %i\n",
 809                                         socket);
 810                         snprintf(buf, sizeof(buf), "pool_direct_%i", socket);
 811
 812                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32,
 813                                 0, RTE_MBUF_DEFAULT_BUF_SIZE, socket);
 814                         if (mp == NULL) {
 815                                 RTE_LOG(ERR, IP_FRAG, "Cannot create direct mempool\n");
 816                                 return -1;
 817                         }
 818                         socket_direct_pool[socket] = mp;
 819                 }
 820
 821                 if (socket_indirect_pool[socket] == NULL) {
 822                         RTE_LOG(INFO, IP_FRAG, "Creating indirect mempool on socket %i\n",
 823                                         socket);
 824                         snprintf(buf, sizeof(buf), "pool_indirect_%i", socket);
 825
 826                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32, 0, 0,
 827                                 socket);
 828                         if (mp == NULL) {
 829                                 RTE_LOG(ERR, IP_FRAG, "Cannot create indirect mempool\n");
 830                                 return -1;
 831                         }
 832                         socket_indirect_pool[socket] = mp;
 833                 }
 834
 835                 if (socket_lpm[socket] == NULL) {
 836                         RTE_LOG(INFO, IP_FRAG, "Creating LPM table on socket %i\n", socket);
 837                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 838
 839                         lpm_config.max_rules = LPM_MAX_RULES;
 840                         lpm_config.number_tbl8s = 256;
 841                         lpm_config.flags = 0;
 842
 843                         lpm = rte_lpm_create(buf, socket, &lpm_config);
 844                         if (lpm == NULL) {
 845                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 846                                 return -1;
 847                         }
 848                         socket_lpm[socket] = lpm;
 849                 }
 850
 851                 if (socket_lpm6[socket] == NULL) {
 852                         RTE_LOG(INFO, IP_FRAG, "Creating LPM6 table on socket %i\n", socket);
 853                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 854
 855                         lpm6 = rte_lpm6_create(buf, socket, &lpm6_config);
 856                         if (lpm6 == NULL) {
 857                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 858                                 return -1;
 859                         }
 860                         socket_lpm6[socket] = lpm6;
 861                 }
 862         }
 863
 864         return 0;
 865 }
 866
 867 int
 868 main(int argc, char **argv)
 869 {
 870         struct lcore_queue_conf *qconf;
 871         struct rte_eth_dev_info dev_info;
 872         struct rte_eth_txconf *txconf;
 873         struct rx_queue *rxq;
 874         int socket, ret;
 875         unsigned nb_ports;
 876         uint16_t queueid = 0;
 877         unsigned lcore_id = 0, rx_lcore_id = 0;
 878         uint32_t n_tx_queue, nb_lcores;
 879         uint8_t portid;
 880
 881         /* init EAL */
 882         ret = rte_eal_init(argc, argv);
 883         if (ret < 0)
 884                 rte_exit(EXIT_FAILURE, "rte_eal_init failed");
 885         argc -= ret;
 886         argv += ret;
 887
 888         /* parse application arguments (after the EAL ones) */
 889         ret = parse_args(argc, argv);
 890         if (ret < 0)
 891                 rte_exit(EXIT_FAILURE, "Invalid arguments");
 892
 893         nb_ports = rte_eth_dev_count();
 894         if (nb_ports == 0)
 895                 rte_exit(EXIT_FAILURE, "No ports found!\n");
 896
 897         nb_lcores = rte_lcore_count();
 898
 899         /* initialize structures (mempools, lpm etc.) */
 900         if (init_mem() < 0)
 901                 rte_panic("Cannot initialize memory structures!\n");
 902
 903         /* check if portmask has non-existent ports */
 904         if (enabled_port_mask & ~(RTE_LEN2MASK(nb_ports, unsigned)))
 905                 rte_exit(EXIT_FAILURE, "Non-existent ports in portmask!\n");
 906
 907         /* initialize all ports */
 908         for (portid = 0; portid < nb_ports; portid++) {
 909                 /* skip ports that are not enabled */
 910                 if ((enabled_port_mask & (1 << portid)) == 0) {
 911                         printf("Skipping disabled port %d\n", portid);
 912                         continue;
 913                 }
 914
 915                 qconf = &lcore_queue_conf[rx_lcore_id];
 916
 917                 /* limit the frame size to the maximum supported by NIC */
 918                 rte_eth_dev_info_get(portid, &dev_info);
 919                 port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
 920                     dev_info.max_rx_pktlen, port_conf.rxmode.max_rx_pkt_len);
 921
 922                 /* get the lcore_id for this port */
 923                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 924                        qconf->n_rx_queue == (unsigned)rx_queue_per_lcore) {
 925
 926                         rx_lcore_id ++;
 927                         if (rx_lcore_id >= RTE_MAX_LCORE)
 928                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 929
 930                         qconf = &lcore_queue_conf[rx_lcore_id];
 931                 }
 932
 933                 socket = (int) rte_lcore_to_socket_id(rx_lcore_id);
 934                 if (socket == SOCKET_ID_ANY)
 935                         socket = 0;
 936
 937                 rxq = &qconf->rx_queue_list[qconf->n_rx_queue];
 938                 rxq->portid = portid;
 939                 rxq->direct_pool = socket_direct_pool[socket];
 940                 rxq->indirect_pool = socket_indirect_pool[socket];
 941                 rxq->lpm = socket_lpm[socket];
 942                 rxq->lpm6 = socket_lpm6[socket];
 943                 qconf->n_rx_queue++;
 944
 945                 /* init port */
 946                 printf("Initializing port %d on lcore %u...", portid,
 947                        rx_lcore_id);
 948                 fflush(stdout);
 949
 950                 n_tx_queue = nb_lcores;
 951                 if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
 952                         n_tx_queue = MAX_TX_QUEUE_PER_PORT;
 953                 ret = rte_eth_dev_configure(portid, 1, (uint16_t)n_tx_queue,
 954                                             &port_conf);
 955                 if (ret < 0) {
 956                         printf("\n");
 957                         rte_exit(EXIT_FAILURE, "Cannot configure device: "
 958                                 "err=%d, port=%d\n",
 959                                 ret, portid);
 960                 }
 961
 962                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 963                                             &nb_txd);
 964                 if (ret < 0) {
 965                         printf("\n");
 966                         rte_exit(EXIT_FAILURE, "Cannot adjust number of "
 967                                 "descriptors: err=%d, port=%d\n", ret, portid);
 968                 }
 969
 970                 /* init one RX queue */
 971                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 972                                              socket, NULL,
 973                                              socket_direct_pool[socket]);
 974                 if (ret < 0) {
 975                         printf("\n");
 976                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: "
 977                                 "err=%d, port=%d\n",
 978                                 ret, portid);
 979                 }
 980
 981                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
 982                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
 983                 printf("\n");
 984
 985                 /* init one TX queue per couple (lcore,port) */
 986                 queueid = 0;
 987                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 988                         if (rte_lcore_is_enabled(lcore_id) == 0)
 989                                 continue;
 990
 991                         socket = (int) rte_lcore_to_socket_id(lcore_id);
 992                         printf("txq=%u,%d ", lcore_id, queueid);
 993                         fflush(stdout);
 994
 995                         txconf = &dev_info.default_txconf;
 996                         txconf->txq_flags = 0;
 997                         ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
 998                                                      socket, txconf);
 999                         if (ret < 0) {
1000                                 printf("\n");
1001                                 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: "
1002                                         "err=%d, port=%d\n", ret, portid);
1003                         }
1004
1005                         qconf = &lcore_queue_conf[lcore_id];
1006                         qconf->tx_queue_id[portid] = queueid;
1007                         queueid++;
1008                 }
1009
1010                 printf("\n");
1011         }
1012
1013         printf("\n");
1014
1015         /* start ports */
1016         for (portid = 0; portid < nb_ports; portid++) {
1017                 if ((enabled_port_mask & (1 << portid)) == 0) {
1018                         continue;
1019                 }
1020                 /* Start device */
1021                 ret = rte_eth_dev_start(portid);
1022                 if (ret < 0)
1023                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
1024                                 ret, portid);
1025
1026                 rte_eth_promiscuous_enable(portid);
1027
1028                 if (check_ptype(portid) == 0) {
1029                         rte_eth_add_rx_callback(portid, 0, cb_parse_ptype, NULL);
1030                         printf("Add Rx callback function to detect L3 packet type by SW :"
1031                                 " port = %d\n", portid);
1032                 }
1033         }
1034
1035         if (init_routing_table() < 0)
1036                 rte_exit(EXIT_FAILURE, "Cannot init routing table\n");
1037
1038         check_all_ports_link_status((uint8_t)nb_ports, enabled_port_mask);
1039
1040         /* launch per-lcore init on every lcore */
1041         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1042         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1043                 if (rte_eal_wait_lcore(lcore_id) < 0)
1044                         return -1;
1045         }
1046
1047         return 0;
1048 }