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