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_per_lcore.h>
  54 #include <rte_launch.h>
  55 #include <rte_atomic.h>
  56 #include <rte_cycles.h>
  57 #include <rte_prefetch.h>
  58 #include <rte_lcore.h>
  59 #include <rte_per_lcore.h>
  60 #include <rte_branch_prediction.h>
  61 #include <rte_interrupts.h>
  62 #include <rte_pci.h>
  63 #include <rte_random.h>
  64 #include <rte_debug.h>
  65 #include <rte_ether.h>
  66 #include <rte_ethdev.h>
  67 #include <rte_ring.h>
  68 #include <rte_mempool.h>
  69 #include <rte_mbuf.h>
  70 #include <rte_lpm.h>
  71 #include <rte_lpm6.h>
  72 #include <rte_ip.h>
  73 #include <rte_string_fns.h>
  74
  75 #include <rte_ip_frag.h>
  76
  77 #define RTE_LOGTYPE_IP_FRAG RTE_LOGTYPE_USER1
  78
  79 #define MBUF_SIZE (2048 + RTE_PKTMBUF_HEADROOM)
  80
  81 /* allow max jumbo frame 9.5 KB */
  82 #define JUMBO_FRAME_MAX_SIZE    0x2600
  83
  84 #define ROUNDUP_DIV(a, b)       (((a) + (b) - 1) / (b))
  85
  86 /*
  87  * Default byte size for the IPv6 Maximum Transfer Unit (MTU).
  88  * This value includes the size of IPv6 header.
  89  */
  90 #define IPV4_MTU_DEFAULT        ETHER_MTU
  91 #define IPV6_MTU_DEFAULT        ETHER_MTU
  92
  93 /*
  94  * Default payload in bytes for the IPv6 packet.
  95  */
  96 #define IPV4_DEFAULT_PAYLOAD    (IPV4_MTU_DEFAULT - sizeof(struct ipv4_hdr))
  97 #define IPV6_DEFAULT_PAYLOAD    (IPV6_MTU_DEFAULT - sizeof(struct ipv6_hdr))
  98
  99 /*
 100  * Max number of fragments per packet expected - defined by config file.
 101  */
 102 #define MAX_PACKET_FRAG RTE_LIBRTE_IP_FRAG_MAX_FRAG
 103
 104 #define NB_MBUF   8192
 105
 106 #define MAX_PKT_BURST   32
 107 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 108
 109 /* Configure how many packets ahead to prefetch, when reading packets */
 110 #define PREFETCH_OFFSET 3
 111
 112 /*
 113  * Configurable number of RX/TX ring descriptors
 114  */
 115 #define RTE_TEST_RX_DESC_DEFAULT 128
 116 #define RTE_TEST_TX_DESC_DEFAULT 512
 117 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
 118 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
 119
 120 /* ethernet addresses of ports */
 121 static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
 122
 123 #ifndef IPv4_BYTES
 124 #define IPv4_BYTES_FMT "%" PRIu8 ".%" PRIu8 ".%" PRIu8 ".%" PRIu8
 125 #define IPv4_BYTES(addr) \
 126                 (uint8_t) (((addr) >> 24) & 0xFF),\
 127                 (uint8_t) (((addr) >> 16) & 0xFF),\
 128                 (uint8_t) (((addr) >> 8) & 0xFF),\
 129                 (uint8_t) ((addr) & 0xFF)
 130 #endif
 131
 132 #ifndef IPv6_BYTES
 133 #define IPv6_BYTES_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"\
 134                        "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
 135 #define IPv6_BYTES(addr) \
 136         addr[0],  addr[1], addr[2],  addr[3], \
 137         addr[4],  addr[5], addr[6],  addr[7], \
 138         addr[8],  addr[9], addr[10], addr[11],\
 139         addr[12], addr[13],addr[14], addr[15]
 140 #endif
 141
 142 #define IPV6_ADDR_LEN 16
 143
 144 /* mask of enabled ports */
 145 static int enabled_port_mask = 0;
 146
 147 static int rx_queue_per_lcore = 1;
 148
 149 #define MBUF_TABLE_SIZE  (2 * MAX(MAX_PKT_BURST, MAX_PACKET_FRAG))
 150
 151 struct mbuf_table {
 152         uint16_t len;
 153         struct rte_mbuf *m_table[MBUF_TABLE_SIZE];
 154 };
 155
 156 struct rx_queue {
 157         struct rte_mempool *direct_pool;
 158         struct rte_mempool *indirect_pool;
 159         struct rte_lpm *lpm;
 160         struct rte_lpm6 *lpm6;
 161         uint8_t portid;
 162 };
 163
 164 #define MAX_RX_QUEUE_PER_LCORE 16
 165 #define MAX_TX_QUEUE_PER_PORT 16
 166 struct lcore_queue_conf {
 167         uint16_t n_rx_queue;
 168         uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
 169         struct rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 170         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 171 } __rte_cache_aligned;
 172 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 173
 174 static const struct rte_eth_conf port_conf = {
 175         .rxmode = {
 176                 .max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
 177                 .split_hdr_size = 0,
 178                 .header_split   = 0, /**< Header Split disabled */
 179                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
 180                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 181                 .jumbo_frame    = 1, /**< Jumbo Frame Support enabled */
 182                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
 183         },
 184         .txmode = {
 185                 .mq_mode = ETH_MQ_TX_NONE,
 186         },
 187 };
 188
 189 /*
 190  * IPv4 forwarding table
 191  */
 192 struct l3fwd_ipv4_route {
 193         uint32_t ip;
 194         uint8_t  depth;
 195         uint8_t  if_out;
 196 };
 197
 198 struct l3fwd_ipv4_route l3fwd_ipv4_route_array[] = {
 199                 {IPv4(100,10,0,0), 16, 0},
 200                 {IPv4(100,20,0,0), 16, 1},
 201                 {IPv4(100,30,0,0), 16, 2},
 202                 {IPv4(100,40,0,0), 16, 3},
 203                 {IPv4(100,50,0,0), 16, 4},
 204                 {IPv4(100,60,0,0), 16, 5},
 205                 {IPv4(100,70,0,0), 16, 6},
 206                 {IPv4(100,80,0,0), 16, 7},
 207 };
 208
 209 /*
 210  * IPv6 forwarding table
 211  */
 212
 213 struct l3fwd_ipv6_route {
 214         uint8_t ip[IPV6_ADDR_LEN];
 215         uint8_t depth;
 216         uint8_t if_out;
 217 };
 218
 219 static struct l3fwd_ipv6_route l3fwd_ipv6_route_array[] = {
 220         {{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 0},
 221         {{2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 1},
 222         {{3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 2},
 223         {{4,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 3},
 224         {{5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 4},
 225         {{6,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 5},
 226         {{7,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 6},
 227         {{8,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 7},
 228 };
 229
 230 #define LPM_MAX_RULES         1024
 231 #define LPM6_MAX_RULES         1024
 232 #define LPM6_NUMBER_TBL8S (1 << 16)
 233
 234 struct rte_lpm6_config lpm6_config = {
 235                 .max_rules = LPM6_MAX_RULES,
 236                 .number_tbl8s = LPM6_NUMBER_TBL8S,
 237                 .flags = 0
 238 };
 239
 240 static struct rte_mempool *socket_direct_pool[RTE_MAX_NUMA_NODES];
 241 static struct rte_mempool *socket_indirect_pool[RTE_MAX_NUMA_NODES];
 242 static struct rte_lpm *socket_lpm[RTE_MAX_NUMA_NODES];
 243 static struct rte_lpm6 *socket_lpm6[RTE_MAX_NUMA_NODES];
 244
 245 /* Send burst of packets on an output interface */
 246 static inline int
 247 send_burst(struct lcore_queue_conf *qconf, uint16_t n, uint8_t port)
 248 {
 249         struct rte_mbuf **m_table;
 250         int ret;
 251         uint16_t queueid;
 252
 253         queueid = qconf->tx_queue_id[port];
 254         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 255
 256         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 257         if (unlikely(ret < n)) {
 258                 do {
 259                         rte_pktmbuf_free(m_table[ret]);
 260                 } while (++ret < n);
 261         }
 262
 263         return 0;
 264 }
 265
 266 static inline void
 267 l3fwd_simple_forward(struct rte_mbuf *m, struct lcore_queue_conf *qconf,
 268                 uint8_t queueid, uint8_t port_in)
 269 {
 270         struct rx_queue *rxq;
 271         uint32_t i, len;
 272         uint8_t next_hop, port_out, ipv6;
 273         int32_t len2;
 274
 275         ipv6 = 0;
 276         rxq = &qconf->rx_queue_list[queueid];
 277
 278         /* by default, send everything back to the source port */
 279         port_out = port_in;
 280
 281         /* Remove the Ethernet header and trailer from the input packet */
 282         rte_pktmbuf_adj(m, (uint16_t)sizeof(struct ether_hdr));
 283
 284         /* Build transmission burst */
 285         len = qconf->tx_mbufs[port_out].len;
 286
 287         /* if this is an IPv4 packet */
 288         if (m->ol_flags & PKT_RX_IPV4_HDR) {
 289                 struct ipv4_hdr *ip_hdr;
 290                 uint32_t ip_dst;
 291                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 292                 ip_hdr = rte_pktmbuf_mtod(m, struct ipv4_hdr *);
 293                 ip_dst = rte_be_to_cpu_32(ip_hdr->dst_addr);
 294
 295                 /* Find destination port */
 296                 if (rte_lpm_lookup(rxq->lpm, ip_dst, &next_hop) == 0 &&
 297                                 (enabled_port_mask & 1 << next_hop) != 0) {
 298                         port_out = next_hop;
 299
 300                         /* Build transmission burst for new port */
 301                         len = qconf->tx_mbufs[port_out].len;
 302                 }
 303
 304                 /* if we don't need to do any fragmentation */
 305                 if (likely (IPV4_MTU_DEFAULT >= m->pkt_len)) {
 306                         qconf->tx_mbufs[port_out].m_table[len] = m;
 307                         len2 = 1;
 308                 } else {
 309                         len2 = rte_ipv4_fragment_packet(m,
 310                                 &qconf->tx_mbufs[port_out].m_table[len],
 311                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 312                                 IPV4_MTU_DEFAULT,
 313                                 rxq->direct_pool, rxq->indirect_pool);
 314
 315                         /* Free input packet */
 316                         rte_pktmbuf_free(m);
 317
 318                         /* If we fail to fragment the packet */
 319                         if (unlikely (len2 < 0))
 320                                 return;
 321                 }
 322         }
 323         /* if this is an IPv6 packet */
 324         else if (m->ol_flags & PKT_RX_IPV6_HDR) {
 325                 struct ipv6_hdr *ip_hdr;
 326
 327                 ipv6 = 1;
 328
 329                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 330                 ip_hdr = rte_pktmbuf_mtod(m, struct ipv6_hdr *);
 331
 332                 /* Find destination port */
 333                 if (rte_lpm6_lookup(rxq->lpm6, ip_hdr->dst_addr, &next_hop) == 0 &&
 334                                 (enabled_port_mask & 1 << next_hop) != 0) {
 335                         port_out = next_hop;
 336
 337                         /* Build transmission burst for new port */
 338                         len = qconf->tx_mbufs[port_out].len;
 339                 }
 340
 341                 /* if we don't need to do any fragmentation */
 342                 if (likely (IPV6_MTU_DEFAULT >= m->pkt_len)) {
 343                         qconf->tx_mbufs[port_out].m_table[len] = m;
 344                         len2 = 1;
 345                 } else {
 346                         len2 = rte_ipv6_fragment_packet(m,
 347                                 &qconf->tx_mbufs[port_out].m_table[len],
 348                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 349                                 IPV6_MTU_DEFAULT,
 350                                 rxq->direct_pool, rxq->indirect_pool);
 351
 352                         /* Free input packet */
 353                         rte_pktmbuf_free(m);
 354
 355                         /* If we fail to fragment the packet */
 356                         if (unlikely (len2 < 0))
 357                                 return;
 358                 }
 359         }
 360         /* else, just forward the packet */
 361         else {
 362                 qconf->tx_mbufs[port_out].m_table[len] = m;
 363                 len2 = 1;
 364         }
 365
 366         for (i = len; i < len + len2; i ++) {
 367                 void *d_addr_bytes;
 368
 369                 m = qconf->tx_mbufs[port_out].m_table[i];
 370                 struct ether_hdr *eth_hdr = (struct ether_hdr *)
 371                         rte_pktmbuf_prepend(m, (uint16_t)sizeof(struct ether_hdr));
 372                 if (eth_hdr == NULL) {
 373                         rte_panic("No headroom in mbuf.\n");
 374                 }
 375
 376                 m->l2_len = sizeof(struct ether_hdr);
 377
 378                 /* 02:00:00:00:00:xx */
 379                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 380                 *((uint64_t *)d_addr_bytes) = 0x000000000002 + ((uint64_t)port_out << 40);
 381
 382                 /* src addr */
 383                 ether_addr_copy(&ports_eth_addr[port_out], &eth_hdr->s_addr);
 384                 if (ipv6)
 385                         eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv6);
 386                 else
 387                         eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv4);
 388         }
 389
 390         len += len2;
 391
 392         if (likely(len < MAX_PKT_BURST)) {
 393                 qconf->tx_mbufs[port_out].len = (uint16_t)len;
 394                 return;
 395         }
 396
 397         /* Transmit packets */
 398         send_burst(qconf, (uint16_t)len, port_out);
 399         qconf->tx_mbufs[port_out].len = 0;
 400 }
 401
 402 /* main processing loop */
 403 static int
 404 main_loop(__attribute__((unused)) void *dummy)
 405 {
 406         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 407         unsigned lcore_id;
 408         uint64_t prev_tsc, diff_tsc, cur_tsc;
 409         int i, j, nb_rx;
 410         uint8_t portid;
 411         struct lcore_queue_conf *qconf;
 412         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 413
 414         prev_tsc = 0;
 415
 416         lcore_id = rte_lcore_id();
 417         qconf = &lcore_queue_conf[lcore_id];
 418
 419         if (qconf->n_rx_queue == 0) {
 420                 RTE_LOG(INFO, IP_FRAG, "lcore %u has nothing to do\n", lcore_id);
 421                 return 0;
 422         }
 423
 424         RTE_LOG(INFO, IP_FRAG, "entering main loop on lcore %u\n", lcore_id);
 425
 426         for (i = 0; i < qconf->n_rx_queue; i++) {
 427
 428                 portid = qconf->rx_queue_list[i].portid;
 429                 RTE_LOG(INFO, IP_FRAG, " -- lcoreid=%u portid=%d\n", lcore_id,
 430                                 (int) portid);
 431         }
 432
 433         while (1) {
 434
 435                 cur_tsc = rte_rdtsc();
 436
 437                 /*
 438                  * TX burst queue drain
 439                  */
 440                 diff_tsc = cur_tsc - prev_tsc;
 441                 if (unlikely(diff_tsc > drain_tsc)) {
 442
 443                         /*
 444                          * This could be optimized (use queueid instead of
 445                          * portid), but it is not called so often
 446                          */
 447                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 448                                 if (qconf->tx_mbufs[portid].len == 0)
 449                                         continue;
 450                                 send_burst(&lcore_queue_conf[lcore_id],
 451                                            qconf->tx_mbufs[portid].len,
 452                                            portid);
 453                                 qconf->tx_mbufs[portid].len = 0;
 454                         }
 455
 456                         prev_tsc = cur_tsc;
 457                 }
 458
 459                 /*
 460                  * Read packet from RX queues
 461                  */
 462                 for (i = 0; i < qconf->n_rx_queue; i++) {
 463
 464                         portid = qconf->rx_queue_list[i].portid;
 465                         nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 466                                                  MAX_PKT_BURST);
 467
 468                         /* Prefetch first packets */
 469                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 470                                 rte_prefetch0(rte_pktmbuf_mtod(
 471                                                 pkts_burst[j], void *));
 472                         }
 473
 474                         /* Prefetch and forward already prefetched packets */
 475                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 476                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 477                                                 j + PREFETCH_OFFSET], void *));
 478                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 479                         }
 480
 481                         /* Forward remaining prefetched packets */
 482                         for (; j < nb_rx; j++) {
 483                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 484                         }
 485                 }
 486         }
 487 }
 488
 489 /* display usage */
 490 static void
 491 print_usage(const char *prgname)
 492 {
 493         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 494                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 495                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n",
 496                prgname);
 497 }
 498
 499 static int
 500 parse_portmask(const char *portmask)
 501 {
 502         char *end = NULL;
 503         unsigned long pm;
 504
 505         /* parse hexadecimal string */
 506         pm = strtoul(portmask, &end, 16);
 507         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 508                 return -1;
 509
 510         if (pm == 0)
 511                 return -1;
 512
 513         return pm;
 514 }
 515
 516 static int
 517 parse_nqueue(const char *q_arg)
 518 {
 519         char *end = NULL;
 520         unsigned long n;
 521
 522         /* parse hexadecimal string */
 523         n = strtoul(q_arg, &end, 10);
 524         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 525                 return -1;
 526         if (n == 0)
 527                 return -1;
 528         if (n >= MAX_RX_QUEUE_PER_LCORE)
 529                 return -1;
 530
 531         return n;
 532 }
 533
 534 /* Parse the argument given in the command line of the application */
 535 static int
 536 parse_args(int argc, char **argv)
 537 {
 538         int opt, ret;
 539         char **argvopt;
 540         int option_index;
 541         char *prgname = argv[0];
 542         static struct option lgopts[] = {
 543                 {NULL, 0, 0, 0}
 544         };
 545
 546         argvopt = argv;
 547
 548         while ((opt = getopt_long(argc, argvopt, "p:q:",
 549                                   lgopts, &option_index)) != EOF) {
 550
 551                 switch (opt) {
 552                 /* portmask */
 553                 case 'p':
 554                         enabled_port_mask = parse_portmask(optarg);
 555                         if (enabled_port_mask < 0) {
 556                                 printf("invalid portmask\n");
 557                                 print_usage(prgname);
 558                                 return -1;
 559                         }
 560                         break;
 561
 562                 /* nqueue */
 563                 case 'q':
 564                         rx_queue_per_lcore = parse_nqueue(optarg);
 565                         if (rx_queue_per_lcore < 0) {
 566                                 printf("invalid queue number\n");
 567                                 print_usage(prgname);
 568                                 return -1;
 569                         }
 570                         break;
 571
 572                 /* long options */
 573                 case 0:
 574                         print_usage(prgname);
 575                         return -1;
 576
 577                 default:
 578                         print_usage(prgname);
 579                         return -1;
 580                 }
 581         }
 582
 583         if (enabled_port_mask == 0) {
 584                 printf("portmask not specified\n");
 585                 print_usage(prgname);
 586                 return -1;
 587         }
 588
 589         if (optind >= 0)
 590                 argv[optind-1] = prgname;
 591
 592         ret = optind-1;
 593         optind = 0; /* reset getopt lib */
 594         return ret;
 595 }
 596
 597 static void
 598 print_ethaddr(const char *name, struct ether_addr *eth_addr)
 599 {
 600         char buf[ETHER_ADDR_FMT_SIZE];
 601         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
 602         printf("%s%s", name, buf);
 603 }
 604
 605 /* Check the link status of all ports in up to 9s, and print them finally */
 606 static void
 607 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 608 {
 609 #define CHECK_INTERVAL 100 /* 100ms */
 610 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 611         uint8_t portid, count, all_ports_up, print_flag = 0;
 612         struct rte_eth_link link;
 613
 614         printf("\nChecking link status");
 615         fflush(stdout);
 616         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 617                 all_ports_up = 1;
 618                 for (portid = 0; portid < port_num; portid++) {
 619                         if ((port_mask & (1 << portid)) == 0)
 620                                 continue;
 621                         memset(&link, 0, sizeof(link));
 622                         rte_eth_link_get_nowait(portid, &link);
 623                         /* print link status if flag set */
 624                         if (print_flag == 1) {
 625                                 if (link.link_status)
 626                                         printf("Port %d Link Up - speed %u "
 627                                                 "Mbps - %s\n", (uint8_t)portid,
 628                                                 (unsigned)link.link_speed,
 629                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 630                                         ("full-duplex") : ("half-duplex\n"));
 631                                 else
 632                                         printf("Port %d Link Down\n",
 633                                                         (uint8_t)portid);
 634                                 continue;
 635                         }
 636                         /* clear all_ports_up flag if any link down */
 637                         if (link.link_status == 0) {
 638                                 all_ports_up = 0;
 639                                 break;
 640                         }
 641                 }
 642                 /* after finally printing all link status, get out */
 643                 if (print_flag == 1)
 644                         break;
 645
 646                 if (all_ports_up == 0) {
 647                         printf(".");
 648                         fflush(stdout);
 649                         rte_delay_ms(CHECK_INTERVAL);
 650                 }
 651
 652                 /* set the print_flag if all ports up or timeout */
 653                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 654                         print_flag = 1;
 655                         printf("\ndone\n");
 656                 }
 657         }
 658 }
 659
 660 static int
 661 init_routing_table(void)
 662 {
 663         struct rte_lpm *lpm;
 664         struct rte_lpm6 *lpm6;
 665         int socket, ret;
 666         unsigned i;
 667
 668         for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
 669                 if (socket_lpm[socket]) {
 670                         lpm = socket_lpm[socket];
 671                         /* populate the LPM table */
 672                         for (i = 0; i < RTE_DIM(l3fwd_ipv4_route_array); i++) {
 673                                 ret = rte_lpm_add(lpm,
 674                                         l3fwd_ipv4_route_array[i].ip,
 675                                         l3fwd_ipv4_route_array[i].depth,
 676                                         l3fwd_ipv4_route_array[i].if_out);
 677
 678                                 if (ret < 0) {
 679                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 680                                                 "LPM table\n", i);
 681                                         return -1;
 682                                 }
 683
 684                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv4_BYTES_FMT
 685                                                 "/%d (port %d)\n",
 686                                         socket,
 687                                         IPv4_BYTES(l3fwd_ipv4_route_array[i].ip),
 688                                         l3fwd_ipv4_route_array[i].depth,
 689                                         l3fwd_ipv4_route_array[i].if_out);
 690                         }
 691                 }
 692
 693                 if (socket_lpm6[socket]) {
 694                         lpm6 = socket_lpm6[socket];
 695                         /* populate the LPM6 table */
 696                         for (i = 0; i < RTE_DIM(l3fwd_ipv6_route_array); i++) {
 697                                 ret = rte_lpm6_add(lpm6,
 698                                         l3fwd_ipv6_route_array[i].ip,
 699                                         l3fwd_ipv6_route_array[i].depth,
 700                                         l3fwd_ipv6_route_array[i].if_out);
 701
 702                                 if (ret < 0) {
 703                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 704                                                 "LPM6 table\n", i);
 705                                         return -1;
 706                                 }
 707
 708                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv6_BYTES_FMT
 709                                                 "/%d (port %d)\n",
 710                                         socket,
 711                                         IPv6_BYTES(l3fwd_ipv6_route_array[i].ip),
 712                                         l3fwd_ipv6_route_array[i].depth,
 713                                         l3fwd_ipv6_route_array[i].if_out);
 714                         }
 715                 }
 716         }
 717         return 0;
 718 }
 719
 720 static int
 721 init_mem(void)
 722 {
 723         char buf[PATH_MAX];
 724         struct rte_mempool *mp;
 725         struct rte_lpm *lpm;
 726         struct rte_lpm6 *lpm6;
 727         int socket;
 728         unsigned lcore_id;
 729
 730         /* traverse through lcores and initialize structures on each socket */
 731
 732         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 733
 734                 if (rte_lcore_is_enabled(lcore_id) == 0)
 735                         continue;
 736
 737                 socket = rte_lcore_to_socket_id(lcore_id);
 738
 739                 if (socket == SOCKET_ID_ANY)
 740                         socket = 0;
 741
 742                 if (socket_direct_pool[socket] == NULL) {
 743                         RTE_LOG(INFO, IP_FRAG, "Creating direct mempool on socket %i\n",
 744                                         socket);
 745                         snprintf(buf, sizeof(buf), "pool_direct_%i", socket);
 746
 747                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32,
 748                                 0, MBUF_DATA_SIZE, socket);
 749                         if (mp == NULL) {
 750                                 RTE_LOG(ERR, IP_FRAG, "Cannot create direct mempool\n");
 751                                 return -1;
 752                         }
 753                         socket_direct_pool[socket] = mp;
 754                 }
 755
 756                 if (socket_indirect_pool[socket] == NULL) {
 757                         RTE_LOG(INFO, IP_FRAG, "Creating indirect mempool on socket %i\n",
 758                                         socket);
 759                         snprintf(buf, sizeof(buf), "pool_indirect_%i", socket);
 760
 761                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32, 0, 0,
 762                                 socket);
 763                         if (mp == NULL) {
 764                                 RTE_LOG(ERR, IP_FRAG, "Cannot create indirect mempool\n");
 765                                 return -1;
 766                         }
 767                         socket_indirect_pool[socket] = mp;
 768                 }
 769
 770                 if (socket_lpm[socket] == NULL) {
 771                         RTE_LOG(INFO, IP_FRAG, "Creating LPM table on socket %i\n", socket);
 772                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 773
 774                         lpm = rte_lpm_create(buf, socket, LPM_MAX_RULES, 0);
 775                         if (lpm == NULL) {
 776                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 777                                 return -1;
 778                         }
 779                         socket_lpm[socket] = lpm;
 780                 }
 781
 782                 if (socket_lpm6[socket] == NULL) {
 783                         RTE_LOG(INFO, IP_FRAG, "Creating LPM6 table on socket %i\n", socket);
 784                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 785
 786                         lpm6 = rte_lpm6_create("IP_FRAG_LPM6", socket, &lpm6_config);
 787                         if (lpm6 == NULL) {
 788                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 789                                 return -1;
 790                         }
 791                         socket_lpm6[socket] = lpm6;
 792                 }
 793         }
 794
 795         return 0;
 796 }
 797
 798 int
 799 main(int argc, char **argv)
 800 {
 801         struct lcore_queue_conf *qconf;
 802         struct rte_eth_dev_info dev_info;
 803         struct rte_eth_txconf *txconf;
 804         struct rx_queue *rxq;
 805         int socket, ret;
 806         unsigned nb_ports;
 807         uint16_t queueid = 0;
 808         unsigned lcore_id = 0, rx_lcore_id = 0;
 809         uint32_t n_tx_queue, nb_lcores;
 810         uint8_t portid;
 811
 812         /* init EAL */
 813         ret = rte_eal_init(argc, argv);
 814         if (ret < 0)
 815                 rte_exit(EXIT_FAILURE, "rte_eal_init failed");
 816         argc -= ret;
 817         argv += ret;
 818
 819         /* parse application arguments (after the EAL ones) */
 820         ret = parse_args(argc, argv);
 821         if (ret < 0)
 822                 rte_exit(EXIT_FAILURE, "Invalid arguments");
 823
 824         nb_ports = rte_eth_dev_count();
 825         if (nb_ports > RTE_MAX_ETHPORTS)
 826                 nb_ports = RTE_MAX_ETHPORTS;
 827         else if (nb_ports == 0)
 828                 rte_exit(EXIT_FAILURE, "No ports found!\n");
 829
 830         nb_lcores = rte_lcore_count();
 831
 832         /* initialize structures (mempools, lpm etc.) */
 833         if (init_mem() < 0)
 834                 rte_panic("Cannot initialize memory structures!\n");
 835
 836         /* check if portmask has non-existent ports */
 837         if (enabled_port_mask & ~(RTE_LEN2MASK(nb_ports, unsigned)))
 838                 rte_exit(EXIT_FAILURE, "Non-existent ports in portmask!\n");
 839
 840         /* initialize all ports */
 841         for (portid = 0; portid < nb_ports; portid++) {
 842                 /* skip ports that are not enabled */
 843                 if ((enabled_port_mask & (1 << portid)) == 0) {
 844                         printf("Skipping disabled port %d\n", portid);
 845                         continue;
 846                 }
 847
 848                 qconf = &lcore_queue_conf[rx_lcore_id];
 849
 850                 /* get the lcore_id for this port */
 851                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 852                        qconf->n_rx_queue == (unsigned)rx_queue_per_lcore) {
 853
 854                         rx_lcore_id ++;
 855                         if (rx_lcore_id >= RTE_MAX_LCORE)
 856                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 857
 858                         qconf = &lcore_queue_conf[rx_lcore_id];
 859                 }
 860
 861                 socket = (int) rte_lcore_to_socket_id(rx_lcore_id);
 862                 if (socket == SOCKET_ID_ANY)
 863                         socket = 0;
 864
 865                 rxq = &qconf->rx_queue_list[qconf->n_rx_queue];
 866                 rxq->portid = portid;
 867                 rxq->direct_pool = socket_direct_pool[socket];
 868                 rxq->indirect_pool = socket_indirect_pool[socket];
 869                 rxq->lpm = socket_lpm[socket];
 870                 rxq->lpm6 = socket_lpm6[socket];
 871                 qconf->n_rx_queue++;
 872
 873                 /* init port */
 874                 printf("Initializing port %d on lcore %u...", portid,
 875                        rx_lcore_id);
 876                 fflush(stdout);
 877
 878                 n_tx_queue = nb_lcores;
 879                 if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
 880                         n_tx_queue = MAX_TX_QUEUE_PER_PORT;
 881                 ret = rte_eth_dev_configure(portid, 1, (uint16_t)n_tx_queue,
 882                                             &port_conf);
 883                 if (ret < 0) {
 884                         printf("\n");
 885                         rte_exit(EXIT_FAILURE, "Cannot configure device: "
 886                                 "err=%d, port=%d\n",
 887                                 ret, portid);
 888                 }
 889
 890                 /* init one RX queue */
 891                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 892                                              socket, NULL,
 893                                              socket_direct_pool[socket]);
 894                 if (ret < 0) {
 895                         printf("\n");
 896                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: "
 897                                 "err=%d, port=%d\n",
 898                                 ret, portid);
 899                 }
 900
 901                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
 902                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
 903                 printf("\n");
 904
 905                 /* init one TX queue per couple (lcore,port) */
 906                 queueid = 0;
 907                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 908                         if (rte_lcore_is_enabled(lcore_id) == 0)
 909                                 continue;
 910
 911                         socket = (int) rte_lcore_to_socket_id(lcore_id);
 912                         printf("txq=%u,%d ", lcore_id, queueid);
 913                         fflush(stdout);
 914
 915                         rte_eth_dev_info_get(portid, &dev_info);
 916                         txconf = &dev_info.default_txconf;
 917                         txconf->txq_flags = 0;
 918                         ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
 919                                                      socket, txconf);
 920                         if (ret < 0) {
 921                                 printf("\n");
 922                                 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: "
 923                                         "err=%d, port=%d\n", ret, portid);
 924                         }
 925
 926                         qconf = &lcore_queue_conf[lcore_id];
 927                         qconf->tx_queue_id[portid] = queueid;
 928                         queueid++;
 929                 }
 930
 931                 printf("\n");
 932         }
 933
 934         printf("\n");
 935
 936         /* start ports */
 937         for (portid = 0; portid < nb_ports; portid++) {
 938                 if ((enabled_port_mask & (1 << portid)) == 0) {
 939                         continue;
 940                 }
 941                 /* Start device */
 942                 ret = rte_eth_dev_start(portid);
 943                 if (ret < 0)
 944                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
 945                                 ret, portid);
 946
 947                 rte_eth_promiscuous_enable(portid);
 948         }
 949
 950         if (init_routing_table() < 0)
 951                 rte_exit(EXIT_FAILURE, "Cannot init routing table\n");
 952
 953         check_all_ports_link_status((uint8_t)nb_ports, enabled_port_mask);
 954
 955         /* launch per-lcore init on every lcore */
 956         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
 957         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 958                 if (rte_eal_wait_lcore(lcore_id) < 0)
 959                         return -1;
 960         }
 961
 962         return 0;
 963 }