examples/l3fwd/l3fwd_lpm.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2016 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 <stdbool.h>
  16 #include <sys/socket.h>
  17 #include <arpa/inet.h>
  18
  19 #include <rte_debug.h>
  20 #include <rte_ether.h>
  21 #include <rte_ethdev.h>
  22 #include <rte_cycles.h>
  23 #include <rte_mbuf.h>
  24 #include <rte_ip.h>
  25 #include <rte_tcp.h>
  26 #include <rte_udp.h>
  27 #include <rte_lpm.h>
  28 #include <rte_lpm6.h>
  29
  30 #include "l3fwd.h"
  31 #include "l3fwd_event.h"
  32
  33 #include "l3fwd_route.h"
  34
  35 #define IPV4_L3FWD_LPM_MAX_RULES         1024
  36 #define IPV4_L3FWD_LPM_NUMBER_TBL8S (1 << 8)
  37 #define IPV6_L3FWD_LPM_MAX_RULES         1024
  38 #define IPV6_L3FWD_LPM_NUMBER_TBL8S (1 << 16)
  39
  40 static struct rte_lpm *ipv4_l3fwd_lpm_lookup_struct[NB_SOCKETS];
  41 static struct rte_lpm6 *ipv6_l3fwd_lpm_lookup_struct[NB_SOCKETS];
  42
  43 static inline uint16_t
  44 lpm_get_ipv4_dst_port(const struct rte_ipv4_hdr *ipv4_hdr,
  45                       uint16_t portid,
  46                       struct rte_lpm *ipv4_l3fwd_lookup_struct)
  47 {
  48         uint32_t dst_ip = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
  49         uint32_t next_hop;
  50
  51         if (rte_lpm_lookup(ipv4_l3fwd_lookup_struct, dst_ip, &next_hop) == 0)
  52                 return next_hop;
  53         else
  54                 return portid;
  55 }
  56
  57 static inline uint16_t
  58 lpm_get_ipv6_dst_port(const struct rte_ipv6_hdr *ipv6_hdr,
  59                       uint16_t portid,
  60                       struct rte_lpm6 *ipv6_l3fwd_lookup_struct)
  61 {
  62         const uint8_t *dst_ip = ipv6_hdr->dst_addr;
  63         uint32_t next_hop;
  64
  65         if (rte_lpm6_lookup(ipv6_l3fwd_lookup_struct, dst_ip, &next_hop) == 0)
  66                 return next_hop;
  67         else
  68                 return portid;
  69 }
  70
  71 static __rte_always_inline uint16_t
  72 lpm_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
  73                 uint16_t portid)
  74 {
  75         struct rte_ipv6_hdr *ipv6_hdr;
  76         struct rte_ipv4_hdr *ipv4_hdr;
  77         struct rte_ether_hdr *eth_hdr;
  78
  79         if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
  80
  81                 eth_hdr = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
  82                 ipv4_hdr = (struct rte_ipv4_hdr *)(eth_hdr + 1);
  83
  84                 return lpm_get_ipv4_dst_port(ipv4_hdr, portid,
  85                                              qconf->ipv4_lookup_struct);
  86         } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
  87
  88                 eth_hdr = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
  89                 ipv6_hdr = (struct rte_ipv6_hdr *)(eth_hdr + 1);
  90
  91                 return lpm_get_ipv6_dst_port(ipv6_hdr, portid,
  92                                              qconf->ipv6_lookup_struct);
  93         }
  94
  95         return portid;
  96 }
  97
  98 /*
  99  * lpm_get_dst_port optimized routine for packets where dst_ipv4 is already
 100  * precalculated. If packet is ipv6 dst_addr is taken directly from packet
 101  * header and dst_ipv4 value is not used.
 102  */
 103 static __rte_always_inline uint16_t
 104 lpm_get_dst_port_with_ipv4(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
 105         uint32_t dst_ipv4, uint16_t portid)
 106 {
 107         uint32_t next_hop;
 108         struct rte_ipv6_hdr *ipv6_hdr;
 109         struct rte_ether_hdr *eth_hdr;
 110
 111         if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
 112                 return (uint16_t) ((rte_lpm_lookup(qconf->ipv4_lookup_struct,
 113                                                    dst_ipv4, &next_hop) == 0)
 114                                    ? next_hop : portid);
 115
 116         } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
 117
 118                 eth_hdr = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
 119                 ipv6_hdr = (struct rte_ipv6_hdr *)(eth_hdr + 1);
 120
 121                 return (uint16_t) ((rte_lpm6_lookup(qconf->ipv6_lookup_struct,
 122                                 ipv6_hdr->dst_addr, &next_hop) == 0)
 123                                 ? next_hop : portid);
 124
 125         }
 126
 127         return portid;
 128 }
 129
 130 #if defined(RTE_ARCH_X86)
 131 #include "l3fwd_lpm_sse.h"
 132 #elif defined __ARM_NEON
 133 #include "l3fwd_lpm_neon.h"
 134 #elif defined(RTE_ARCH_PPC_64)
 135 #include "l3fwd_lpm_altivec.h"
 136 #else
 137 #include "l3fwd_lpm.h"
 138 #endif
 139
 140 /* main processing loop */
 141 int
 142 lpm_main_loop(__rte_unused void *dummy)
 143 {
 144         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 145         unsigned lcore_id;
 146         uint64_t prev_tsc, diff_tsc, cur_tsc;
 147         int i, nb_rx;
 148         uint16_t portid;
 149         uint8_t queueid;
 150         struct lcore_conf *qconf;
 151         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
 152                 US_PER_S * BURST_TX_DRAIN_US;
 153
 154         lcore_id = rte_lcore_id();
 155         qconf = &lcore_conf[lcore_id];
 156
 157         const uint16_t n_rx_q = qconf->n_rx_queue;
 158         const uint16_t n_tx_p = qconf->n_tx_port;
 159         if (n_rx_q == 0) {
 160                 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
 161                 return 0;
 162         }
 163
 164         RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
 165
 166         for (i = 0; i < n_rx_q; i++) {
 167
 168                 portid = qconf->rx_queue_list[i].port_id;
 169                 queueid = qconf->rx_queue_list[i].queue_id;
 170                 RTE_LOG(INFO, L3FWD,
 171                         " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
 172                         lcore_id, portid, queueid);
 173         }
 174
 175         cur_tsc = rte_rdtsc();
 176         prev_tsc = cur_tsc;
 177
 178         while (!force_quit) {
 179
 180                 /*
 181                  * TX burst queue drain
 182                  */
 183                 diff_tsc = cur_tsc - prev_tsc;
 184                 if (unlikely(diff_tsc > drain_tsc)) {
 185
 186                         for (i = 0; i < n_tx_p; ++i) {
 187                                 portid = qconf->tx_port_id[i];
 188                                 if (qconf->tx_mbufs[portid].len == 0)
 189                                         continue;
 190                                 send_burst(qconf,
 191                                         qconf->tx_mbufs[portid].len,
 192                                         portid);
 193                                 qconf->tx_mbufs[portid].len = 0;
 194                         }
 195
 196                         prev_tsc = cur_tsc;
 197                 }
 198
 199                 /*
 200                  * Read packet from RX queues
 201                  */
 202                 for (i = 0; i < n_rx_q; ++i) {
 203                         portid = qconf->rx_queue_list[i].port_id;
 204                         queueid = qconf->rx_queue_list[i].queue_id;
 205                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
 206                                 MAX_PKT_BURST);
 207                         if (nb_rx == 0)
 208                                 continue;
 209
 210 #if defined RTE_ARCH_X86 || defined __ARM_NEON \
 211                          || defined RTE_ARCH_PPC_64
 212                         l3fwd_lpm_send_packets(nb_rx, pkts_burst,
 213                                                 portid, qconf);
 214 #else
 215                         l3fwd_lpm_no_opt_send_packets(nb_rx, pkts_burst,
 216                                                         portid, qconf);
 217 #endif /* X86 */
 218                 }
 219
 220                 cur_tsc = rte_rdtsc();
 221         }
 222
 223         return 0;
 224 }
 225
 226 static __rte_always_inline uint16_t
 227 lpm_process_event_pkt(const struct lcore_conf *lconf, struct rte_mbuf *mbuf)
 228 {
 229         mbuf->port = lpm_get_dst_port(lconf, mbuf, mbuf->port);
 230
 231 #if defined RTE_ARCH_X86 || defined __ARM_NEON \
 232         || defined RTE_ARCH_PPC_64
 233         process_packet(mbuf, &mbuf->port);
 234 #else
 235
 236         struct rte_ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf,
 237                         struct rte_ether_hdr *);
 238 #ifdef DO_RFC_1812_CHECKS
 239         struct rte_ipv4_hdr *ipv4_hdr;
 240         if (RTE_ETH_IS_IPV4_HDR(mbuf->packet_type)) {
 241                 /* Handle IPv4 headers.*/
 242                 ipv4_hdr = rte_pktmbuf_mtod_offset(mbuf,
 243                                 struct rte_ipv4_hdr *,
 244                                 sizeof(struct rte_ether_hdr));
 245
 246                 if (is_valid_ipv4_pkt(ipv4_hdr, mbuf->pkt_len)
 247                                 < 0) {
 248                         mbuf->port = BAD_PORT;
 249                         continue;
 250                 }
 251                 /* Update time to live and header checksum */
 252                 --(ipv4_hdr->time_to_live);
 253                 ++(ipv4_hdr->hdr_checksum);
 254         }
 255 #endif
 256         /* dst addr */
 257         *(uint64_t *)&eth_hdr->d_addr = dest_eth_addr[mbuf->port];
 258
 259         /* src addr */
 260         rte_ether_addr_copy(&ports_eth_addr[mbuf->port],
 261                         &eth_hdr->s_addr);
 262 #endif
 263         return mbuf->port;
 264 }
 265
 266 static __rte_always_inline void
 267 lpm_event_loop_single(struct l3fwd_event_resources *evt_rsrc,
 268                 const uint8_t flags)
 269 {
 270         const int event_p_id = l3fwd_get_free_event_port(evt_rsrc);
 271         const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
 272                 evt_rsrc->evq.nb_queues - 1];
 273         const uint8_t event_d_id = evt_rsrc->event_d_id;
 274         struct lcore_conf *lconf;
 275         unsigned int lcore_id;
 276         struct rte_event ev;
 277
 278         if (event_p_id < 0)
 279                 return;
 280
 281         lcore_id = rte_lcore_id();
 282         lconf = &lcore_conf[lcore_id];
 283
 284         RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id);
 285         while (!force_quit) {
 286                 if (!rte_event_dequeue_burst(event_d_id, event_p_id, &ev, 1, 0))
 287                         continue;
 288
 289                 if (lpm_process_event_pkt(lconf, ev.mbuf) == BAD_PORT) {
 290                         rte_pktmbuf_free(ev.mbuf);
 291                         continue;
 292                 }
 293
 294                 if (flags & L3FWD_EVENT_TX_ENQ) {
 295                         ev.queue_id = tx_q_id;
 296                         ev.op = RTE_EVENT_OP_FORWARD;
 297                         while (rte_event_enqueue_burst(event_d_id, event_p_id,
 298                                                 &ev, 1) && !force_quit)
 299                                 ;
 300                 }
 301
 302                 if (flags & L3FWD_EVENT_TX_DIRECT) {
 303                         rte_event_eth_tx_adapter_txq_set(ev.mbuf, 0);
 304                         while (!rte_event_eth_tx_adapter_enqueue(event_d_id,
 305                                                 event_p_id, &ev, 1, 0) &&
 306                                         !force_quit)
 307                                 ;
 308                 }
 309         }
 310 }
 311
 312 static __rte_always_inline void
 313 lpm_event_loop_burst(struct l3fwd_event_resources *evt_rsrc,
 314                 const uint8_t flags)
 315 {
 316         const int event_p_id = l3fwd_get_free_event_port(evt_rsrc);
 317         const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
 318                 evt_rsrc->evq.nb_queues - 1];
 319         const uint8_t event_d_id = evt_rsrc->event_d_id;
 320         const uint16_t deq_len = evt_rsrc->deq_depth;
 321         struct rte_event events[MAX_PKT_BURST];
 322         struct lcore_conf *lconf;
 323         unsigned int lcore_id;
 324         int i, nb_enq, nb_deq;
 325
 326         if (event_p_id < 0)
 327                 return;
 328
 329         lcore_id = rte_lcore_id();
 330
 331         lconf = &lcore_conf[lcore_id];
 332
 333         RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id);
 334
 335         while (!force_quit) {
 336                 /* Read events from RX queues */
 337                 nb_deq = rte_event_dequeue_burst(event_d_id, event_p_id,
 338                                 events, deq_len, 0);
 339                 if (nb_deq == 0) {
 340                         rte_pause();
 341                         continue;
 342                 }
 343
 344                 for (i = 0; i < nb_deq; i++) {
 345                         if (flags & L3FWD_EVENT_TX_ENQ) {
 346                                 events[i].queue_id = tx_q_id;
 347                                 events[i].op = RTE_EVENT_OP_FORWARD;
 348                         }
 349
 350                         if (flags & L3FWD_EVENT_TX_DIRECT)
 351                                 rte_event_eth_tx_adapter_txq_set(events[i].mbuf,
 352                                                                  0);
 353
 354                         lpm_process_event_pkt(lconf, events[i].mbuf);
 355                 }
 356
 357                 if (flags & L3FWD_EVENT_TX_ENQ) {
 358                         nb_enq = rte_event_enqueue_burst(event_d_id, event_p_id,
 359                                         events, nb_deq);
 360                         while (nb_enq < nb_deq && !force_quit)
 361                                 nb_enq += rte_event_enqueue_burst(event_d_id,
 362                                                 event_p_id, events + nb_enq,
 363                                                 nb_deq - nb_enq);
 364                 }
 365
 366                 if (flags & L3FWD_EVENT_TX_DIRECT) {
 367                         nb_enq = rte_event_eth_tx_adapter_enqueue(event_d_id,
 368                                         event_p_id, events, nb_deq, 0);
 369                         while (nb_enq < nb_deq && !force_quit)
 370                                 nb_enq += rte_event_eth_tx_adapter_enqueue(
 371                                                 event_d_id, event_p_id,
 372                                                 events + nb_enq,
 373                                                 nb_deq - nb_enq, 0);
 374                 }
 375         }
 376 }
 377
 378 static __rte_always_inline void
 379 lpm_event_loop(struct l3fwd_event_resources *evt_rsrc,
 380                  const uint8_t flags)
 381 {
 382         if (flags & L3FWD_EVENT_SINGLE)
 383                 lpm_event_loop_single(evt_rsrc, flags);
 384         if (flags & L3FWD_EVENT_BURST)
 385                 lpm_event_loop_burst(evt_rsrc, flags);
 386 }
 387
 388 int __rte_noinline
 389 lpm_event_main_loop_tx_d(__rte_unused void *dummy)
 390 {
 391         struct l3fwd_event_resources *evt_rsrc =
 392                                         l3fwd_get_eventdev_rsrc();
 393
 394         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT | L3FWD_EVENT_SINGLE);
 395         return 0;
 396 }
 397
 398 int __rte_noinline
 399 lpm_event_main_loop_tx_d_burst(__rte_unused void *dummy)
 400 {
 401         struct l3fwd_event_resources *evt_rsrc =
 402                                         l3fwd_get_eventdev_rsrc();
 403
 404         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT | L3FWD_EVENT_BURST);
 405         return 0;
 406 }
 407
 408 int __rte_noinline
 409 lpm_event_main_loop_tx_q(__rte_unused void *dummy)
 410 {
 411         struct l3fwd_event_resources *evt_rsrc =
 412                                         l3fwd_get_eventdev_rsrc();
 413
 414         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ | L3FWD_EVENT_SINGLE);
 415         return 0;
 416 }
 417
 418 int __rte_noinline
 419 lpm_event_main_loop_tx_q_burst(__rte_unused void *dummy)
 420 {
 421         struct l3fwd_event_resources *evt_rsrc =
 422                                         l3fwd_get_eventdev_rsrc();
 423
 424         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ | L3FWD_EVENT_BURST);
 425         return 0;
 426 }
 427
 428 void
 429 setup_lpm(const int socketid)
 430 {
 431         struct rte_lpm6_config config;
 432         struct rte_lpm_config config_ipv4;
 433         unsigned i;
 434         int ret;
 435         char s[64];
 436         char abuf[INET6_ADDRSTRLEN];
 437
 438         /* create the LPM table */
 439         config_ipv4.max_rules = IPV4_L3FWD_LPM_MAX_RULES;
 440         config_ipv4.number_tbl8s = IPV4_L3FWD_LPM_NUMBER_TBL8S;
 441         config_ipv4.flags = 0;
 442         snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
 443         ipv4_l3fwd_lpm_lookup_struct[socketid] =
 444                         rte_lpm_create(s, socketid, &config_ipv4);
 445         if (ipv4_l3fwd_lpm_lookup_struct[socketid] == NULL)
 446                 rte_exit(EXIT_FAILURE,
 447                         "Unable to create the l3fwd LPM table on socket %d\n",
 448                         socketid);
 449
 450         /* populate the LPM table */
 451         for (i = 0; i < RTE_DIM(ipv4_l3fwd_route_array); i++) {
 452                 struct in_addr in;
 453
 454                 /* skip unused ports */
 455                 if ((1 << ipv4_l3fwd_route_array[i].if_out &
 456                                 enabled_port_mask) == 0)
 457                         continue;
 458
 459                 ret = rte_lpm_add(ipv4_l3fwd_lpm_lookup_struct[socketid],
 460                         ipv4_l3fwd_route_array[i].ip,
 461                         ipv4_l3fwd_route_array[i].depth,
 462                         ipv4_l3fwd_route_array[i].if_out);
 463
 464                 if (ret < 0) {
 465                         rte_exit(EXIT_FAILURE,
 466                                 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
 467                                 i, socketid);
 468                 }
 469
 470                 in.s_addr = htonl(ipv4_l3fwd_route_array[i].ip);
 471                 printf("LPM: Adding route %s / %d (%d)\n",
 472                        inet_ntop(AF_INET, &in, abuf, sizeof(abuf)),
 473                         ipv4_l3fwd_route_array[i].depth,
 474                         ipv4_l3fwd_route_array[i].if_out);
 475         }
 476
 477         /* create the LPM6 table */
 478         snprintf(s, sizeof(s), "IPV6_L3FWD_LPM_%d", socketid);
 479
 480         config.max_rules = IPV6_L3FWD_LPM_MAX_RULES;
 481         config.number_tbl8s = IPV6_L3FWD_LPM_NUMBER_TBL8S;
 482         config.flags = 0;
 483         ipv6_l3fwd_lpm_lookup_struct[socketid] = rte_lpm6_create(s, socketid,
 484                                 &config);
 485         if (ipv6_l3fwd_lpm_lookup_struct[socketid] == NULL)
 486                 rte_exit(EXIT_FAILURE,
 487                         "Unable to create the l3fwd LPM table on socket %d\n",
 488                         socketid);
 489
 490         /* populate the LPM table */
 491         for (i = 0; i < RTE_DIM(ipv6_l3fwd_route_array); i++) {
 492
 493                 /* skip unused ports */
 494                 if ((1 << ipv6_l3fwd_route_array[i].if_out &
 495                                 enabled_port_mask) == 0)
 496                         continue;
 497
 498                 ret = rte_lpm6_add(ipv6_l3fwd_lpm_lookup_struct[socketid],
 499                         ipv6_l3fwd_route_array[i].ip,
 500                         ipv6_l3fwd_route_array[i].depth,
 501                         ipv6_l3fwd_route_array[i].if_out);
 502
 503                 if (ret < 0) {
 504                         rte_exit(EXIT_FAILURE,
 505                                 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
 506                                 i, socketid);
 507                 }
 508
 509                 printf("LPM: Adding route %s / %d (%d)\n",
 510                        inet_ntop(AF_INET6, ipv6_l3fwd_route_array[i].ip,
 511                                  abuf, sizeof(abuf)),
 512                        ipv6_l3fwd_route_array[i].depth,
 513                        ipv6_l3fwd_route_array[i].if_out);
 514         }
 515 }
 516
 517 int
 518 lpm_check_ptype(int portid)
 519 {
 520         int i, ret;
 521         int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
 522         uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
 523
 524         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
 525         if (ret <= 0)
 526                 return 0;
 527
 528         uint32_t ptypes[ret];
 529
 530         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
 531         for (i = 0; i < ret; ++i) {
 532                 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
 533                         ptype_l3_ipv4 = 1;
 534                 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
 535                         ptype_l3_ipv6 = 1;
 536         }
 537
 538         if (ptype_l3_ipv4 == 0)
 539                 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
 540
 541         if (ptype_l3_ipv6 == 0)
 542                 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
 543
 544         if (ptype_l3_ipv4 && ptype_l3_ipv6)
 545                 return 1;
 546
 547         return 0;
 548
 549 }
 550
 551 static inline void
 552 lpm_parse_ptype(struct rte_mbuf *m)
 553 {
 554         struct rte_ether_hdr *eth_hdr;
 555         uint32_t packet_type = RTE_PTYPE_UNKNOWN;
 556         uint16_t ether_type;
 557
 558         eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 559         ether_type = eth_hdr->ether_type;
 560         if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4))
 561                 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 562         else if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6))
 563                 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 564
 565         m->packet_type = packet_type;
 566 }
 567
 568 uint16_t
 569 lpm_cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
 570                    struct rte_mbuf *pkts[], uint16_t nb_pkts,
 571                    uint16_t max_pkts __rte_unused,
 572                    void *user_param __rte_unused)
 573 {
 574         unsigned int i;
 575
 576         if (unlikely(nb_pkts == 0))
 577                 return nb_pkts;
 578         rte_prefetch0(rte_pktmbuf_mtod(pkts[0], struct ether_hdr *));
 579         for (i = 0; i < (unsigned int) (nb_pkts - 1); ++i) {
 580                 rte_prefetch0(rte_pktmbuf_mtod(pkts[i+1],
 581                         struct ether_hdr *));
 582                 lpm_parse_ptype(pkts[i]);
 583         }
 584         lpm_parse_ptype(pkts[i]);
 585
 586         return nb_pkts;
 587 }
 588
 589 /* Return ipv4/ipv6 lpm fwd lookup struct. */
 590 void *
 591 lpm_get_ipv4_l3fwd_lookup_struct(const int socketid)
 592 {
 593         return ipv4_l3fwd_lpm_lookup_struct[socketid];
 594 }
 595
 596 void *
 597 lpm_get_ipv6_l3fwd_lookup_struct(const int socketid)
 598 {
 599         return ipv6_l3fwd_lpm_lookup_struct[socketid];
 600 }