examples/ip_reassembly/main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <stdint.h>
   8 #include <inttypes.h>
   9 #include <sys/types.h>
  10 #include <string.h>
  11 #include <sys/queue.h>
  12 #include <stdarg.h>
  13 #include <errno.h>
  14 #include <getopt.h>
  15 #include <signal.h>
  16 #include <sys/param.h>
  17
  18 #include <rte_common.h>
  19 #include <rte_byteorder.h>
  20 #include <rte_log.h>
  21 #include <rte_memory.h>
  22 #include <rte_memcpy.h>
  23 #include <rte_eal.h>
  24 #include <rte_launch.h>
  25 #include <rte_atomic.h>
  26 #include <rte_cycles.h>
  27 #include <rte_prefetch.h>
  28 #include <rte_lcore.h>
  29 #include <rte_per_lcore.h>
  30 #include <rte_branch_prediction.h>
  31 #include <rte_interrupts.h>
  32 #include <rte_random.h>
  33 #include <rte_debug.h>
  34 #include <rte_ether.h>
  35 #include <rte_ethdev.h>
  36 #include <rte_mempool.h>
  37 #include <rte_mbuf.h>
  38 #include <rte_malloc.h>
  39 #include <rte_ip.h>
  40 #include <rte_tcp.h>
  41 #include <rte_udp.h>
  42 #include <rte_string_fns.h>
  43 #include <rte_lpm.h>
  44 #include <rte_lpm6.h>
  45
  46 #include <rte_ip_frag.h>
  47
  48 #define MAX_PKT_BURST 32
  49
  50
  51 #define RTE_LOGTYPE_IP_RSMBL RTE_LOGTYPE_USER1
  52
  53 #define MAX_JUMBO_PKT_LEN  9600
  54
  55 #define BUF_SIZE        RTE_MBUF_DEFAULT_DATAROOM
  56 #define MBUF_DATA_SIZE  RTE_MBUF_DEFAULT_BUF_SIZE
  57
  58 #define NB_MBUF 8192
  59 #define MEMPOOL_CACHE_SIZE 256
  60
  61 /* allow max jumbo frame 9.5 KB */
  62 #define JUMBO_FRAME_MAX_SIZE    0x2600
  63
  64 #define MAX_FLOW_NUM    UINT16_MAX
  65 #define MIN_FLOW_NUM    1
  66 #define DEF_FLOW_NUM    0x1000
  67
  68 /* TTL numbers are in ms. */
  69 #define MAX_FLOW_TTL    (3600 * MS_PER_S)
  70 #define MIN_FLOW_TTL    1
  71 #define DEF_FLOW_TTL    MS_PER_S
  72
  73 #define MAX_FRAG_NUM RTE_LIBRTE_IP_FRAG_MAX_FRAG
  74
  75 /* Should be power of two. */
  76 #define IP_FRAG_TBL_BUCKET_ENTRIES      16
  77
  78 static uint32_t max_flow_num = DEF_FLOW_NUM;
  79 static uint32_t max_flow_ttl = DEF_FLOW_TTL;
  80
  81 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  82
  83 #define NB_SOCKETS 8
  84
  85 /* Configure how many packets ahead to prefetch, when reading packets */
  86 #define PREFETCH_OFFSET 3
  87
  88 /*
  89  * Configurable number of RX/TX ring descriptors
  90  */
  91 #define RTE_TEST_RX_DESC_DEFAULT 1024
  92 #define RTE_TEST_TX_DESC_DEFAULT 1024
  93
  94 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  95 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  96
  97 /* ethernet addresses of ports */
  98 static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
  99
 100 #ifndef IPv4_BYTES
 101 #define IPv4_BYTES_FMT "%" PRIu8 ".%" PRIu8 ".%" PRIu8 ".%" PRIu8
 102 #define IPv4_BYTES(addr) \
 103                 (uint8_t) (((addr) >> 24) & 0xFF),\
 104                 (uint8_t) (((addr) >> 16) & 0xFF),\
 105                 (uint8_t) (((addr) >> 8) & 0xFF),\
 106                 (uint8_t) ((addr) & 0xFF)
 107 #endif
 108
 109 #ifndef IPv6_BYTES
 110 #define IPv6_BYTES_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"\
 111                        "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
 112 #define IPv6_BYTES(addr) \
 113         addr[0],  addr[1], addr[2],  addr[3], \
 114         addr[4],  addr[5], addr[6],  addr[7], \
 115         addr[8],  addr[9], addr[10], addr[11],\
 116         addr[12], addr[13],addr[14], addr[15]
 117 #endif
 118
 119 #define IPV6_ADDR_LEN 16
 120
 121 /* mask of enabled ports */
 122 static uint32_t enabled_port_mask = 0;
 123
 124 static int rx_queue_per_lcore = 1;
 125
 126 struct mbuf_table {
 127         uint32_t len;
 128         uint32_t head;
 129         uint32_t tail;
 130         struct rte_mbuf *m_table[0];
 131 };
 132
 133 struct rx_queue {
 134         struct rte_ip_frag_tbl *frag_tbl;
 135         struct rte_mempool *pool;
 136         struct rte_lpm *lpm;
 137         struct rte_lpm6 *lpm6;
 138         uint16_t portid;
 139 };
 140
 141 struct tx_lcore_stat {
 142         uint64_t call;
 143         uint64_t drop;
 144         uint64_t queue;
 145         uint64_t send;
 146 };
 147
 148 #define MAX_RX_QUEUE_PER_LCORE 16
 149 #define MAX_TX_QUEUE_PER_PORT 16
 150 #define MAX_RX_QUEUE_PER_PORT 128
 151
 152 struct lcore_queue_conf {
 153         uint16_t n_rx_queue;
 154         struct rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 155         uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
 156         struct rte_ip_frag_death_row death_row;
 157         struct mbuf_table *tx_mbufs[RTE_MAX_ETHPORTS];
 158         struct tx_lcore_stat tx_stat;
 159 } __rte_cache_aligned;
 160 static struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 161
 162 static struct rte_eth_conf port_conf = {
 163         .rxmode = {
 164                 .mq_mode        = ETH_MQ_RX_RSS,
 165                 .max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
 166                 .split_hdr_size = 0,
 167                 .ignore_offload_bitfield = 1,
 168                 .offloads = (DEV_RX_OFFLOAD_CHECKSUM |
 169                              DEV_RX_OFFLOAD_JUMBO_FRAME |
 170                              DEV_RX_OFFLOAD_CRC_STRIP),
 171         },
 172         .rx_adv_conf = {
 173                         .rss_conf = {
 174                                 .rss_key = NULL,
 175                                 .rss_hf = ETH_RSS_IP,
 176                 },
 177         },
 178         .txmode = {
 179                 .mq_mode = ETH_MQ_TX_NONE,
 180                 .offloads = (DEV_TX_OFFLOAD_IPV4_CKSUM |
 181                              DEV_TX_OFFLOAD_MULTI_SEGS),
 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_lpm *socket_lpm[RTE_MAX_NUMA_NODES];
 237 static struct rte_lpm6 *socket_lpm6[RTE_MAX_NUMA_NODES];
 238
 239 #ifdef RTE_LIBRTE_IP_FRAG_TBL_STAT
 240 #define TX_LCORE_STAT_UPDATE(s, f, v)   ((s)->f += (v))
 241 #else
 242 #define TX_LCORE_STAT_UPDATE(s, f, v)   do {} while (0)
 243 #endif /* RTE_LIBRTE_IP_FRAG_TBL_STAT */
 244
 245 /*
 246  * If number of queued packets reached given threahold, then
 247  * send burst of packets on an output interface.
 248  */
 249 static inline uint32_t
 250 send_burst(struct lcore_queue_conf *qconf, uint32_t thresh, uint16_t port)
 251 {
 252         uint32_t fill, len, k, n;
 253         struct mbuf_table *txmb;
 254
 255         txmb = qconf->tx_mbufs[port];
 256         len = txmb->len;
 257
 258         if ((int32_t)(fill = txmb->head - txmb->tail) < 0)
 259                 fill += len;
 260
 261         if (fill >= thresh) {
 262                 n = RTE_MIN(len - txmb->tail, fill);
 263
 264                 k = rte_eth_tx_burst(port, qconf->tx_queue_id[port],
 265                         txmb->m_table + txmb->tail, (uint16_t)n);
 266
 267                 TX_LCORE_STAT_UPDATE(&qconf->tx_stat, call, 1);
 268                 TX_LCORE_STAT_UPDATE(&qconf->tx_stat, send, k);
 269
 270                 fill -= k;
 271                 if ((txmb->tail += k) == len)
 272                         txmb->tail = 0;
 273         }
 274
 275         return fill;
 276 }
 277
 278 /* Enqueue a single packet, and send burst if queue is filled */
 279 static inline int
 280 send_single_packet(struct rte_mbuf *m, uint16_t port)
 281 {
 282         uint32_t fill, lcore_id, len;
 283         struct lcore_queue_conf *qconf;
 284         struct mbuf_table *txmb;
 285
 286         lcore_id = rte_lcore_id();
 287         qconf = &lcore_queue_conf[lcore_id];
 288
 289         txmb = qconf->tx_mbufs[port];
 290         len = txmb->len;
 291
 292         fill = send_burst(qconf, MAX_PKT_BURST, port);
 293
 294         if (fill == len - 1) {
 295                 TX_LCORE_STAT_UPDATE(&qconf->tx_stat, drop, 1);
 296                 rte_pktmbuf_free(txmb->m_table[txmb->tail]);
 297                 if (++txmb->tail == len)
 298                         txmb->tail = 0;
 299         }
 300
 301         TX_LCORE_STAT_UPDATE(&qconf->tx_stat, queue, 1);
 302         txmb->m_table[txmb->head] = m;
 303         if(++txmb->head == len)
 304                 txmb->head = 0;
 305
 306         return 0;
 307 }
 308
 309 static inline void
 310 reassemble(struct rte_mbuf *m, uint16_t portid, uint32_t queue,
 311         struct lcore_queue_conf *qconf, uint64_t tms)
 312 {
 313         struct ether_hdr *eth_hdr;
 314         struct rte_ip_frag_tbl *tbl;
 315         struct rte_ip_frag_death_row *dr;
 316         struct rx_queue *rxq;
 317         void *d_addr_bytes;
 318         uint32_t next_hop;
 319         uint16_t dst_port;
 320
 321         rxq = &qconf->rx_queue_list[queue];
 322
 323         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 324
 325         dst_port = portid;
 326
 327         /* if packet is IPv4 */
 328         if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
 329                 struct ipv4_hdr *ip_hdr;
 330                 uint32_t ip_dst;
 331
 332                 ip_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
 333
 334                  /* if it is a fragmented packet, then try to reassemble. */
 335                 if (rte_ipv4_frag_pkt_is_fragmented(ip_hdr)) {
 336                         struct rte_mbuf *mo;
 337
 338                         tbl = rxq->frag_tbl;
 339                         dr = &qconf->death_row;
 340
 341                         /* prepare mbuf: setup l2_len/l3_len. */
 342                         m->l2_len = sizeof(*eth_hdr);
 343                         m->l3_len = sizeof(*ip_hdr);
 344
 345                         /* process this fragment. */
 346                         mo = rte_ipv4_frag_reassemble_packet(tbl, dr, m, tms, ip_hdr);
 347                         if (mo == NULL)
 348                                 /* no packet to send out. */
 349                                 return;
 350
 351                         /* we have our packet reassembled. */
 352                         if (mo != m) {
 353                                 m = mo;
 354                                 eth_hdr = rte_pktmbuf_mtod(m,
 355                                         struct ether_hdr *);
 356                                 ip_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
 357                         }
 358                 }
 359                 ip_dst = rte_be_to_cpu_32(ip_hdr->dst_addr);
 360
 361                 /* Find destination port */
 362                 if (rte_lpm_lookup(rxq->lpm, ip_dst, &next_hop) == 0 &&
 363                                 (enabled_port_mask & 1 << next_hop) != 0) {
 364                         dst_port = next_hop;
 365                 }
 366
 367                 eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv4);
 368         } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
 369                 /* if packet is IPv6 */
 370                 struct ipv6_extension_fragment *frag_hdr;
 371                 struct ipv6_hdr *ip_hdr;
 372
 373                 ip_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
 374
 375                 frag_hdr = rte_ipv6_frag_get_ipv6_fragment_header(ip_hdr);
 376
 377                 if (frag_hdr != NULL) {
 378                         struct rte_mbuf *mo;
 379
 380                         tbl = rxq->frag_tbl;
 381                         dr  = &qconf->death_row;
 382
 383                         /* prepare mbuf: setup l2_len/l3_len. */
 384                         m->l2_len = sizeof(*eth_hdr);
 385                         m->l3_len = sizeof(*ip_hdr) + sizeof(*frag_hdr);
 386
 387                         mo = rte_ipv6_frag_reassemble_packet(tbl, dr, m, tms, ip_hdr, frag_hdr);
 388                         if (mo == NULL)
 389                                 return;
 390
 391                         if (mo != m) {
 392                                 m = mo;
 393                                 eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 394                                 ip_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
 395                         }
 396                 }
 397
 398                 /* Find destination port */
 399                 if (rte_lpm6_lookup(rxq->lpm6, ip_hdr->dst_addr,
 400                                                 &next_hop) == 0 &&
 401                                 (enabled_port_mask & 1 << next_hop) != 0) {
 402                         dst_port = next_hop;
 403                 }
 404
 405                 eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv6);
 406         }
 407         /* if packet wasn't IPv4 or IPv6, it's forwarded to the port it came from */
 408
 409         /* 02:00:00:00:00:xx */
 410         d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 411         *((uint64_t *)d_addr_bytes) = 0x000000000002 + ((uint64_t)dst_port << 40);
 412
 413         /* src addr */
 414         ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 415
 416         send_single_packet(m, dst_port);
 417 }
 418
 419 /* main processing loop */
 420 static int
 421 main_loop(__attribute__((unused)) void *dummy)
 422 {
 423         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 424         unsigned lcore_id;
 425         uint64_t diff_tsc, cur_tsc, prev_tsc;
 426         int i, j, nb_rx;
 427         uint16_t portid;
 428         struct lcore_queue_conf *qconf;
 429         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 430
 431         prev_tsc = 0;
 432
 433         lcore_id = rte_lcore_id();
 434         qconf = &lcore_queue_conf[lcore_id];
 435
 436         if (qconf->n_rx_queue == 0) {
 437                 RTE_LOG(INFO, IP_RSMBL, "lcore %u has nothing to do\n", lcore_id);
 438                 return 0;
 439         }
 440
 441         RTE_LOG(INFO, IP_RSMBL, "entering main loop on lcore %u\n", lcore_id);
 442
 443         for (i = 0; i < qconf->n_rx_queue; i++) {
 444
 445                 portid = qconf->rx_queue_list[i].portid;
 446                 RTE_LOG(INFO, IP_RSMBL, " -- lcoreid=%u portid=%u\n", lcore_id,
 447                         portid);
 448         }
 449
 450         while (1) {
 451
 452                 cur_tsc = rte_rdtsc();
 453
 454                 /*
 455                  * TX burst queue drain
 456                  */
 457                 diff_tsc = cur_tsc - prev_tsc;
 458                 if (unlikely(diff_tsc > drain_tsc)) {
 459
 460                         /*
 461                          * This could be optimized (use queueid instead of
 462                          * portid), but it is not called so often
 463                          */
 464                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 465                                 if ((enabled_port_mask & (1 << portid)) != 0)
 466                                         send_burst(qconf, 1, portid);
 467                         }
 468
 469                         prev_tsc = cur_tsc;
 470                 }
 471
 472                 /*
 473                  * Read packet from RX queues
 474                  */
 475                 for (i = 0; i < qconf->n_rx_queue; ++i) {
 476
 477                         portid = qconf->rx_queue_list[i].portid;
 478
 479                         nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 480                                 MAX_PKT_BURST);
 481
 482                         /* Prefetch first packets */
 483                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 484                                 rte_prefetch0(rte_pktmbuf_mtod(
 485                                                 pkts_burst[j], void *));
 486                         }
 487
 488                         /* Prefetch and forward already prefetched packets */
 489                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 490                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 491                                         j + PREFETCH_OFFSET], void *));
 492                                 reassemble(pkts_burst[j], portid,
 493                                         i, qconf, cur_tsc);
 494                         }
 495
 496                         /* Forward remaining prefetched packets */
 497                         for (; j < nb_rx; j++) {
 498                                 reassemble(pkts_burst[j], portid,
 499                                         i, qconf, cur_tsc);
 500                         }
 501
 502                         rte_ip_frag_free_death_row(&qconf->death_row,
 503                                 PREFETCH_OFFSET);
 504                 }
 505         }
 506 }
 507
 508 /* display usage */
 509 static void
 510 print_usage(const char *prgname)
 511 {
 512         printf("%s [EAL options] -- -p PORTMASK [-q NQ]"
 513                 "  [--max-pkt-len PKTLEN]"
 514                 "  [--maxflows=<flows>]  [--flowttl=<ttl>[(s|ms)]]\n"
 515                 "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 516                 "  -q NQ: number of RX queues per lcore\n"
 517                 "  --maxflows=<flows>: optional, maximum number of flows "
 518                 "supported\n"
 519                 "  --flowttl=<ttl>[(s|ms)]: optional, maximum TTL for each "
 520                 "flow\n",
 521                 prgname);
 522 }
 523
 524 static uint32_t
 525 parse_flow_num(const char *str, uint32_t min, uint32_t max, uint32_t *val)
 526 {
 527         char *end;
 528         uint64_t v;
 529
 530         /* parse decimal string */
 531         errno = 0;
 532         v = strtoul(str, &end, 10);
 533         if (errno != 0 || *end != '\0')
 534                 return -EINVAL;
 535
 536         if (v < min || v > max)
 537                 return -EINVAL;
 538
 539         *val = (uint32_t)v;
 540         return 0;
 541 }
 542
 543 static int
 544 parse_flow_ttl(const char *str, uint32_t min, uint32_t max, uint32_t *val)
 545 {
 546         char *end;
 547         uint64_t v;
 548
 549         static const char frmt_sec[] = "s";
 550         static const char frmt_msec[] = "ms";
 551
 552         /* parse decimal string */
 553         errno = 0;
 554         v = strtoul(str, &end, 10);
 555         if (errno != 0)
 556                 return -EINVAL;
 557
 558         if (*end != '\0') {
 559                 if (strncmp(frmt_sec, end, sizeof(frmt_sec)) == 0)
 560                         v *= MS_PER_S;
 561                 else if (strncmp(frmt_msec, end, sizeof (frmt_msec)) != 0)
 562                         return -EINVAL;
 563         }
 564
 565         if (v < min || v > max)
 566                 return -EINVAL;
 567
 568         *val = (uint32_t)v;
 569         return 0;
 570 }
 571
 572 static int
 573 parse_portmask(const char *portmask)
 574 {
 575         char *end = NULL;
 576         unsigned long pm;
 577
 578         /* parse hexadecimal string */
 579         pm = strtoul(portmask, &end, 16);
 580         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 581                 return -1;
 582
 583         if (pm == 0)
 584                 return -1;
 585
 586         return pm;
 587 }
 588
 589 static int
 590 parse_nqueue(const char *q_arg)
 591 {
 592         char *end = NULL;
 593         unsigned long n;
 594
 595         printf("%p\n", q_arg);
 596
 597         /* parse hexadecimal string */
 598         n = strtoul(q_arg, &end, 10);
 599         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 600                 return -1;
 601         if (n == 0)
 602                 return -1;
 603         if (n >= MAX_RX_QUEUE_PER_LCORE)
 604                 return -1;
 605
 606         return n;
 607 }
 608
 609 /* Parse the argument given in the command line of the application */
 610 static int
 611 parse_args(int argc, char **argv)
 612 {
 613         int opt, ret;
 614         char **argvopt;
 615         int option_index;
 616         char *prgname = argv[0];
 617         static struct option lgopts[] = {
 618                 {"max-pkt-len", 1, 0, 0},
 619                 {"maxflows", 1, 0, 0},
 620                 {"flowttl", 1, 0, 0},
 621                 {NULL, 0, 0, 0}
 622         };
 623
 624         argvopt = argv;
 625
 626         while ((opt = getopt_long(argc, argvopt, "p:q:",
 627                                 lgopts, &option_index)) != EOF) {
 628
 629                 switch (opt) {
 630                 /* portmask */
 631                 case 'p':
 632                         enabled_port_mask = parse_portmask(optarg);
 633                         if (enabled_port_mask == 0) {
 634                                 printf("invalid portmask\n");
 635                                 print_usage(prgname);
 636                                 return -1;
 637                         }
 638                         break;
 639
 640                 /* nqueue */
 641                 case 'q':
 642                         rx_queue_per_lcore = parse_nqueue(optarg);
 643                         if (rx_queue_per_lcore < 0) {
 644                                 printf("invalid queue number\n");
 645                                 print_usage(prgname);
 646                                 return -1;
 647                         }
 648                         break;
 649
 650                 /* long options */
 651                 case 0:
 652                         if (!strncmp(lgopts[option_index].name,
 653                                         "maxflows", 8)) {
 654                                 if ((ret = parse_flow_num(optarg, MIN_FLOW_NUM,
 655                                                 MAX_FLOW_NUM,
 656                                                 &max_flow_num)) != 0) {
 657                                         printf("invalid value: \"%s\" for "
 658                                                 "parameter %s\n",
 659                                                 optarg,
 660                                                 lgopts[option_index].name);
 661                                         print_usage(prgname);
 662                                         return ret;
 663                                 }
 664                         }
 665
 666                         if (!strncmp(lgopts[option_index].name, "flowttl", 7)) {
 667                                 if ((ret = parse_flow_ttl(optarg, MIN_FLOW_TTL,
 668                                                 MAX_FLOW_TTL,
 669                                                 &max_flow_ttl)) != 0) {
 670                                         printf("invalid value: \"%s\" for "
 671                                                 "parameter %s\n",
 672                                                 optarg,
 673                                                 lgopts[option_index].name);
 674                                         print_usage(prgname);
 675                                         return ret;
 676                                 }
 677                         }
 678
 679                         break;
 680
 681                 default:
 682                         print_usage(prgname);
 683                         return -1;
 684                 }
 685         }
 686
 687         if (optind >= 0)
 688                 argv[optind-1] = prgname;
 689
 690         ret = optind-1;
 691         optind = 1; /* reset getopt lib */
 692         return ret;
 693 }
 694
 695 static void
 696 print_ethaddr(const char *name, const struct ether_addr *eth_addr)
 697 {
 698         char buf[ETHER_ADDR_FMT_SIZE];
 699         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
 700         printf("%s%s", name, buf);
 701 }
 702
 703 /* Check the link status of all ports in up to 9s, and print them finally */
 704 static void
 705 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
 706 {
 707 #define CHECK_INTERVAL 100 /* 100ms */
 708 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 709         uint16_t portid;
 710         uint8_t count, all_ports_up, print_flag = 0;
 711         struct rte_eth_link link;
 712
 713         printf("\nChecking link status");
 714         fflush(stdout);
 715         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 716                 all_ports_up = 1;
 717                 for (portid = 0; portid < port_num; portid++) {
 718                         if ((port_mask & (1 << portid)) == 0)
 719                                 continue;
 720                         memset(&link, 0, sizeof(link));
 721                         rte_eth_link_get_nowait(portid, &link);
 722                         /* print link status if flag set */
 723                         if (print_flag == 1) {
 724                                 if (link.link_status)
 725                                         printf(
 726                                         "Port%d Link Up. Speed %u Mbps - %s\n",
 727                                                 portid, link.link_speed,
 728                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 729                                         ("full-duplex") : ("half-duplex\n"));
 730                                 else
 731                                         printf("Port %d Link Down\n", portid);
 732                                 continue;
 733                         }
 734                         /* clear all_ports_up flag if any link down */
 735                         if (link.link_status == ETH_LINK_DOWN) {
 736                                 all_ports_up = 0;
 737                                 break;
 738                         }
 739                 }
 740                 /* after finally printing all link status, get out */
 741                 if (print_flag == 1)
 742                         break;
 743
 744                 if (all_ports_up == 0) {
 745                         printf(".");
 746                         fflush(stdout);
 747                         rte_delay_ms(CHECK_INTERVAL);
 748                 }
 749
 750                 /* set the print_flag if all ports up or timeout */
 751                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 752                         print_flag = 1;
 753                         printf("\ndone\n");
 754                 }
 755         }
 756 }
 757
 758 static int
 759 init_routing_table(void)
 760 {
 761         struct rte_lpm *lpm;
 762         struct rte_lpm6 *lpm6;
 763         int socket, ret;
 764         unsigned i;
 765
 766         for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
 767                 if (socket_lpm[socket]) {
 768                         lpm = socket_lpm[socket];
 769                         /* populate the LPM table */
 770                         for (i = 0; i < RTE_DIM(l3fwd_ipv4_route_array); i++) {
 771                                 ret = rte_lpm_add(lpm,
 772                                         l3fwd_ipv4_route_array[i].ip,
 773                                         l3fwd_ipv4_route_array[i].depth,
 774                                         l3fwd_ipv4_route_array[i].if_out);
 775
 776                                 if (ret < 0) {
 777                                         RTE_LOG(ERR, IP_RSMBL, "Unable to add entry %i to the l3fwd "
 778                                                 "LPM table\n", i);
 779                                         return -1;
 780                                 }
 781
 782                                 RTE_LOG(INFO, IP_RSMBL, "Socket %i: adding route " IPv4_BYTES_FMT
 783                                                 "/%d (port %d)\n",
 784                                         socket,
 785                                         IPv4_BYTES(l3fwd_ipv4_route_array[i].ip),
 786                                         l3fwd_ipv4_route_array[i].depth,
 787                                         l3fwd_ipv4_route_array[i].if_out);
 788                         }
 789                 }
 790
 791                 if (socket_lpm6[socket]) {
 792                         lpm6 = socket_lpm6[socket];
 793                         /* populate the LPM6 table */
 794                         for (i = 0; i < RTE_DIM(l3fwd_ipv6_route_array); i++) {
 795                                 ret = rte_lpm6_add(lpm6,
 796                                         l3fwd_ipv6_route_array[i].ip,
 797                                         l3fwd_ipv6_route_array[i].depth,
 798                                         l3fwd_ipv6_route_array[i].if_out);
 799
 800                                 if (ret < 0) {
 801                                         RTE_LOG(ERR, IP_RSMBL, "Unable to add entry %i to the l3fwd "
 802                                                 "LPM6 table\n", i);
 803                                         return -1;
 804                                 }
 805
 806                                 RTE_LOG(INFO, IP_RSMBL, "Socket %i: adding route " IPv6_BYTES_FMT
 807                                                 "/%d (port %d)\n",
 808                                         socket,
 809                                         IPv6_BYTES(l3fwd_ipv6_route_array[i].ip),
 810                                         l3fwd_ipv6_route_array[i].depth,
 811                                         l3fwd_ipv6_route_array[i].if_out);
 812                         }
 813                 }
 814         }
 815         return 0;
 816 }
 817
 818 static int
 819 setup_port_tbl(struct lcore_queue_conf *qconf, uint32_t lcore, int socket,
 820         uint32_t port)
 821 {
 822         struct mbuf_table *mtb;
 823         uint32_t n;
 824         size_t sz;
 825
 826         n = RTE_MAX(max_flow_num, 2UL * MAX_PKT_BURST);
 827         sz = sizeof (*mtb) + sizeof (mtb->m_table[0]) *  n;
 828
 829         if ((mtb = rte_zmalloc_socket(__func__, sz, RTE_CACHE_LINE_SIZE,
 830                         socket)) == NULL) {
 831                 RTE_LOG(ERR, IP_RSMBL, "%s() for lcore: %u, port: %u "
 832                         "failed to allocate %zu bytes\n",
 833                         __func__, lcore, port, sz);
 834                 return -1;
 835         }
 836
 837         mtb->len = n;
 838         qconf->tx_mbufs[port] = mtb;
 839
 840         return 0;
 841 }
 842
 843 static int
 844 setup_queue_tbl(struct rx_queue *rxq, uint32_t lcore, uint32_t queue)
 845 {
 846         int socket;
 847         uint32_t nb_mbuf;
 848         uint64_t frag_cycles;
 849         char buf[RTE_MEMPOOL_NAMESIZE];
 850
 851         socket = rte_lcore_to_socket_id(lcore);
 852         if (socket == SOCKET_ID_ANY)
 853                 socket = 0;
 854
 855         frag_cycles = (rte_get_tsc_hz() + MS_PER_S - 1) / MS_PER_S *
 856                 max_flow_ttl;
 857
 858         if ((rxq->frag_tbl = rte_ip_frag_table_create(max_flow_num,
 859                         IP_FRAG_TBL_BUCKET_ENTRIES, max_flow_num, frag_cycles,
 860                         socket)) == NULL) {
 861                 RTE_LOG(ERR, IP_RSMBL, "ip_frag_tbl_create(%u) on "
 862                         "lcore: %u for queue: %u failed\n",
 863                         max_flow_num, lcore, queue);
 864                 return -1;
 865         }
 866
 867         /*
 868          * At any given moment up to <max_flow_num * (MAX_FRAG_NUM)>
 869          * mbufs could be stored int the fragment table.
 870          * Plus, each TX queue can hold up to <max_flow_num> packets.
 871          */
 872
 873         nb_mbuf = RTE_MAX(max_flow_num, 2UL * MAX_PKT_BURST) * MAX_FRAG_NUM;
 874         nb_mbuf *= (port_conf.rxmode.max_rx_pkt_len + BUF_SIZE - 1) / BUF_SIZE;
 875         nb_mbuf *= 2; /* ipv4 and ipv6 */
 876         nb_mbuf += nb_rxd + nb_txd;
 877
 878         nb_mbuf = RTE_MAX(nb_mbuf, (uint32_t)NB_MBUF);
 879
 880         snprintf(buf, sizeof(buf), "mbuf_pool_%u_%u", lcore, queue);
 881
 882         rxq->pool = rte_pktmbuf_pool_create(buf, nb_mbuf, MEMPOOL_CACHE_SIZE, 0,
 883                                             MBUF_DATA_SIZE, socket);
 884         if (rxq->pool == NULL) {
 885                 RTE_LOG(ERR, IP_RSMBL,
 886                         "rte_pktmbuf_pool_create(%s) failed", buf);
 887                 return -1;
 888         }
 889
 890         return 0;
 891 }
 892
 893 static int
 894 init_mem(void)
 895 {
 896         char buf[PATH_MAX];
 897         struct rte_lpm *lpm;
 898         struct rte_lpm6 *lpm6;
 899         struct rte_lpm_config lpm_config;
 900         int socket;
 901         unsigned lcore_id;
 902
 903         /* traverse through lcores and initialize structures on each socket */
 904
 905         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 906
 907                 if (rte_lcore_is_enabled(lcore_id) == 0)
 908                         continue;
 909
 910                 socket = rte_lcore_to_socket_id(lcore_id);
 911
 912                 if (socket == SOCKET_ID_ANY)
 913                         socket = 0;
 914
 915                 if (socket_lpm[socket] == NULL) {
 916                         RTE_LOG(INFO, IP_RSMBL, "Creating LPM table on socket %i\n", socket);
 917                         snprintf(buf, sizeof(buf), "IP_RSMBL_LPM_%i", socket);
 918
 919                         lpm_config.max_rules = LPM_MAX_RULES;
 920                         lpm_config.number_tbl8s = 256;
 921                         lpm_config.flags = 0;
 922
 923                         lpm = rte_lpm_create(buf, socket, &lpm_config);
 924                         if (lpm == NULL) {
 925                                 RTE_LOG(ERR, IP_RSMBL, "Cannot create LPM table\n");
 926                                 return -1;
 927                         }
 928                         socket_lpm[socket] = lpm;
 929                 }
 930
 931                 if (socket_lpm6[socket] == NULL) {
 932                         RTE_LOG(INFO, IP_RSMBL, "Creating LPM6 table on socket %i\n", socket);
 933                         snprintf(buf, sizeof(buf), "IP_RSMBL_LPM_%i", socket);
 934
 935                         lpm6 = rte_lpm6_create(buf, socket, &lpm6_config);
 936                         if (lpm6 == NULL) {
 937                                 RTE_LOG(ERR, IP_RSMBL, "Cannot create LPM table\n");
 938                                 return -1;
 939                         }
 940                         socket_lpm6[socket] = lpm6;
 941                 }
 942         }
 943
 944         return 0;
 945 }
 946
 947 static void
 948 queue_dump_stat(void)
 949 {
 950         uint32_t i, lcore;
 951         const struct lcore_queue_conf *qconf;
 952
 953         for (lcore = 0; lcore < RTE_MAX_LCORE; lcore++) {
 954                 if (rte_lcore_is_enabled(lcore) == 0)
 955                         continue;
 956
 957                 qconf = &lcore_queue_conf[lcore];
 958                 for (i = 0; i < qconf->n_rx_queue; i++) {
 959
 960                         fprintf(stdout, " -- lcoreid=%u portid=%u "
 961                                 "frag tbl stat:\n",
 962                                 lcore,  qconf->rx_queue_list[i].portid);
 963                         rte_ip_frag_table_statistics_dump(stdout,
 964                                         qconf->rx_queue_list[i].frag_tbl);
 965                         fprintf(stdout, "TX bursts:\t%" PRIu64 "\n"
 966                                 "TX packets _queued:\t%" PRIu64 "\n"
 967                                 "TX packets dropped:\t%" PRIu64 "\n"
 968                                 "TX packets send:\t%" PRIu64 "\n",
 969                                 qconf->tx_stat.call,
 970                                 qconf->tx_stat.queue,
 971                                 qconf->tx_stat.drop,
 972                                 qconf->tx_stat.send);
 973                 }
 974         }
 975 }
 976
 977 static void
 978 signal_handler(int signum)
 979 {
 980         queue_dump_stat();
 981         if (signum != SIGUSR1)
 982                 rte_exit(0, "received signal: %d, exiting\n", signum);
 983 }
 984
 985 int
 986 main(int argc, char **argv)
 987 {
 988         struct lcore_queue_conf *qconf;
 989         struct rte_eth_dev_info dev_info;
 990         struct rte_eth_txconf *txconf;
 991         struct rx_queue *rxq;
 992         int ret, socket;
 993         unsigned nb_ports;
 994         uint16_t queueid;
 995         unsigned lcore_id = 0, rx_lcore_id = 0;
 996         uint32_t n_tx_queue, nb_lcores;
 997         uint16_t portid;
 998
 999         /* init EAL */
1000         ret = rte_eal_init(argc, argv);
1001         if (ret < 0)
1002                 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
1003         argc -= ret;
1004         argv += ret;
1005
1006         /* parse application arguments (after the EAL ones) */
1007         ret = parse_args(argc, argv);
1008         if (ret < 0)
1009                 rte_exit(EXIT_FAILURE, "Invalid IP reassembly parameters\n");
1010
1011         nb_ports = rte_eth_dev_count();
1012         if (nb_ports == 0)
1013                 rte_exit(EXIT_FAILURE, "No ports found!\n");
1014
1015         nb_lcores = rte_lcore_count();
1016
1017         /* initialize structures (mempools, lpm etc.) */
1018         if (init_mem() < 0)
1019                 rte_panic("Cannot initialize memory structures!\n");
1020
1021         /* check if portmask has non-existent ports */
1022         if (enabled_port_mask & ~(RTE_LEN2MASK(nb_ports, unsigned)))
1023                 rte_exit(EXIT_FAILURE, "Non-existent ports in portmask!\n");
1024
1025         /* initialize all ports */
1026         for (portid = 0; portid < nb_ports; portid++) {
1027                 struct rte_eth_rxconf rxq_conf;
1028                 struct rte_eth_conf local_port_conf = port_conf;
1029
1030                 /* skip ports that are not enabled */
1031                 if ((enabled_port_mask & (1 << portid)) == 0) {
1032                         printf("\nSkipping disabled port %d\n", portid);
1033                         continue;
1034                 }
1035
1036                 qconf = &lcore_queue_conf[rx_lcore_id];
1037
1038                 /* limit the frame size to the maximum supported by NIC */
1039                 rte_eth_dev_info_get(portid, &dev_info);
1040                 local_port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
1041                     dev_info.max_rx_pktlen,
1042                     local_port_conf.rxmode.max_rx_pkt_len);
1043
1044                 /* get the lcore_id for this port */
1045                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
1046                            qconf->n_rx_queue == (unsigned)rx_queue_per_lcore) {
1047
1048                         rx_lcore_id++;
1049                         if (rx_lcore_id >= RTE_MAX_LCORE)
1050                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
1051
1052                         qconf = &lcore_queue_conf[rx_lcore_id];
1053                 }
1054
1055                 socket = rte_lcore_to_socket_id(portid);
1056                 if (socket == SOCKET_ID_ANY)
1057                         socket = 0;
1058
1059                 queueid = qconf->n_rx_queue;
1060                 rxq = &qconf->rx_queue_list[queueid];
1061                 rxq->portid = portid;
1062                 rxq->lpm = socket_lpm[socket];
1063                 rxq->lpm6 = socket_lpm6[socket];
1064
1065                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
1066                                                        &nb_txd);
1067                 if (ret < 0)
1068                         rte_exit(EXIT_FAILURE,
1069                                  "Cannot adjust number of descriptors: err=%d, port=%d\n",
1070                                  ret, portid);
1071
1072                 if (setup_queue_tbl(rxq, rx_lcore_id, queueid) < 0)
1073                         rte_exit(EXIT_FAILURE, "Failed to set up queue table\n");
1074                 qconf->n_rx_queue++;
1075
1076                 /* init port */
1077                 printf("Initializing port %d ... ", portid );
1078                 fflush(stdout);
1079
1080                 n_tx_queue = nb_lcores;
1081                 if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
1082                         n_tx_queue = MAX_TX_QUEUE_PER_PORT;
1083                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
1084                         local_port_conf.txmode.offloads |=
1085                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
1086                 ret = rte_eth_dev_configure(portid, 1, (uint16_t)n_tx_queue,
1087                                             &local_port_conf);
1088                 if (ret < 0) {
1089                         printf("\n");
1090                         rte_exit(EXIT_FAILURE, "Cannot configure device: "
1091                                 "err=%d, port=%d\n",
1092                                 ret, portid);
1093                 }
1094
1095                 /* init one RX queue */
1096                 rxq_conf = dev_info.default_rxconf;
1097                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
1098                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
1099                                              socket, &rxq_conf,
1100                                              rxq->pool);
1101                 if (ret < 0) {
1102                         printf("\n");
1103                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: "
1104                                 "err=%d, port=%d\n",
1105                                 ret, portid);
1106                 }
1107
1108                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
1109                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
1110                 printf("\n");
1111
1112                 /* init one TX queue per couple (lcore,port) */
1113                 queueid = 0;
1114                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1115                         if (rte_lcore_is_enabled(lcore_id) == 0)
1116                                 continue;
1117
1118                         socket = (int) rte_lcore_to_socket_id(lcore_id);
1119
1120                         printf("txq=%u,%d,%d ", lcore_id, queueid, socket);
1121                         fflush(stdout);
1122
1123                         txconf = &dev_info.default_txconf;
1124                         txconf->txq_flags = ETH_TXQ_FLAGS_IGNORE;
1125                         txconf->offloads = local_port_conf.txmode.offloads;
1126
1127                         ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
1128                                         socket, txconf);
1129                         if (ret < 0)
1130                                 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
1131                                         "port=%d\n", ret, portid);
1132
1133                         qconf = &lcore_queue_conf[lcore_id];
1134                         qconf->tx_queue_id[portid] = queueid;
1135                         setup_port_tbl(qconf, lcore_id, socket, portid);
1136                         queueid++;
1137                 }
1138                 printf("\n");
1139         }
1140
1141         printf("\n");
1142
1143         /* start ports */
1144         for (portid = 0; portid < nb_ports; portid++) {
1145                 if ((enabled_port_mask & (1 << portid)) == 0) {
1146                         continue;
1147                 }
1148                 /* Start device */
1149                 ret = rte_eth_dev_start(portid);
1150                 if (ret < 0)
1151                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
1152                                 ret, portid);
1153
1154                 rte_eth_promiscuous_enable(portid);
1155         }
1156
1157         if (init_routing_table() < 0)
1158                 rte_exit(EXIT_FAILURE, "Cannot init routing table\n");
1159
1160         check_all_ports_link_status(nb_ports, enabled_port_mask);
1161
1162         signal(SIGUSR1, signal_handler);
1163         signal(SIGTERM, signal_handler);
1164         signal(SIGINT, signal_handler);
1165
1166         /* launch per-lcore init on every lcore */
1167         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1168         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1169                 if (rte_eal_wait_lcore(lcore_id) < 0)
1170                         return -1;
1171         }
1172
1173         return 0;
1174 }