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         if (qconf->n_rx_queue == 0) {
 158                 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
 159                 return 0;
 160         }
 161
 162         RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
 163
 164         for (i = 0; i < qconf->n_rx_queue; i++) {
 165
 166                 portid = qconf->rx_queue_list[i].port_id;
 167                 queueid = qconf->rx_queue_list[i].queue_id;
 168                 RTE_LOG(INFO, L3FWD,
 169                         " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
 170                         lcore_id, portid, queueid);
 171         }
 172
 173         cur_tsc = rte_rdtsc();
 174         prev_tsc = cur_tsc;
 175
 176         while (!force_quit) {
 177
 178                 /*
 179                  * TX burst queue drain
 180                  */
 181                 diff_tsc = cur_tsc - prev_tsc;
 182                 if (unlikely(diff_tsc > drain_tsc)) {
 183
 184                         for (i = 0; i < qconf->n_tx_port; ++i) {
 185                                 portid = qconf->tx_port_id[i];
 186                                 if (qconf->tx_mbufs[portid].len == 0)
 187                                         continue;
 188                                 send_burst(qconf,
 189                                         qconf->tx_mbufs[portid].len,
 190                                         portid);
 191                                 qconf->tx_mbufs[portid].len = 0;
 192                         }
 193
 194                         prev_tsc = cur_tsc;
 195                 }
 196
 197                 /*
 198                  * Read packet from RX queues
 199                  */
 200                 for (i = 0; i < qconf->n_rx_queue; ++i) {
 201                         portid = qconf->rx_queue_list[i].port_id;
 202                         queueid = qconf->rx_queue_list[i].queue_id;
 203                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
 204                                 MAX_PKT_BURST);
 205                         if (nb_rx == 0)
 206                                 continue;
 207
 208 #if defined RTE_ARCH_X86 || defined __ARM_NEON \
 209                          || defined RTE_ARCH_PPC_64
 210                         l3fwd_lpm_send_packets(nb_rx, pkts_burst,
 211                                                 portid, qconf);
 212 #else
 213                         l3fwd_lpm_no_opt_send_packets(nb_rx, pkts_burst,
 214                                                         portid, qconf);
 215 #endif /* X86 */
 216                 }
 217
 218                 cur_tsc = rte_rdtsc();
 219         }
 220
 221         return 0;
 222 }
 223
 224 static __rte_always_inline uint16_t
 225 lpm_process_event_pkt(const struct lcore_conf *lconf, struct rte_mbuf *mbuf)
 226 {
 227         mbuf->port = lpm_get_dst_port(lconf, mbuf, mbuf->port);
 228
 229 #if defined RTE_ARCH_X86 || defined __ARM_NEON \
 230         || defined RTE_ARCH_PPC_64
 231         process_packet(mbuf, &mbuf->port);
 232 #else
 233
 234         struct rte_ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf,
 235                         struct rte_ether_hdr *);
 236 #ifdef DO_RFC_1812_CHECKS
 237         struct rte_ipv4_hdr *ipv4_hdr;
 238         if (RTE_ETH_IS_IPV4_HDR(mbuf->packet_type)) {
 239                 /* Handle IPv4 headers.*/
 240                 ipv4_hdr = rte_pktmbuf_mtod_offset(mbuf,
 241                                 struct rte_ipv4_hdr *,
 242                                 sizeof(struct rte_ether_hdr));
 243
 244                 if (is_valid_ipv4_pkt(ipv4_hdr, mbuf->pkt_len)
 245                                 < 0) {
 246                         mbuf->port = BAD_PORT;
 247                         continue;
 248                 }
 249                 /* Update time to live and header checksum */
 250                 --(ipv4_hdr->time_to_live);
 251                 ++(ipv4_hdr->hdr_checksum);
 252         }
 253 #endif
 254         /* dst addr */
 255         *(uint64_t *)&eth_hdr->d_addr = dest_eth_addr[mbuf->port];
 256
 257         /* src addr */
 258         rte_ether_addr_copy(&ports_eth_addr[mbuf->port],
 259                         &eth_hdr->s_addr);
 260 #endif
 261         return mbuf->port;
 262 }
 263
 264 static __rte_always_inline void
 265 lpm_event_loop_single(struct l3fwd_event_resources *evt_rsrc,
 266                 const uint8_t flags)
 267 {
 268         const int event_p_id = l3fwd_get_free_event_port(evt_rsrc);
 269         const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
 270                 evt_rsrc->evq.nb_queues - 1];
 271         const uint8_t event_d_id = evt_rsrc->event_d_id;
 272         struct lcore_conf *lconf;
 273         unsigned int lcore_id;
 274         struct rte_event ev;
 275
 276         if (event_p_id < 0)
 277                 return;
 278
 279         lcore_id = rte_lcore_id();
 280         lconf = &lcore_conf[lcore_id];
 281
 282         RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id);
 283         while (!force_quit) {
 284                 if (!rte_event_dequeue_burst(event_d_id, event_p_id, &ev, 1, 0))
 285                         continue;
 286
 287                 if (lpm_process_event_pkt(lconf, ev.mbuf) == BAD_PORT) {
 288                         rte_pktmbuf_free(ev.mbuf);
 289                         continue;
 290                 }
 291
 292                 if (flags & L3FWD_EVENT_TX_ENQ) {
 293                         ev.queue_id = tx_q_id;
 294                         ev.op = RTE_EVENT_OP_FORWARD;
 295                         while (rte_event_enqueue_burst(event_d_id, event_p_id,
 296                                                 &ev, 1) && !force_quit)
 297                                 ;
 298                 }
 299
 300                 if (flags & L3FWD_EVENT_TX_DIRECT) {
 301                         rte_event_eth_tx_adapter_txq_set(ev.mbuf, 0);
 302                         while (!rte_event_eth_tx_adapter_enqueue(event_d_id,
 303                                                 event_p_id, &ev, 1, 0) &&
 304                                         !force_quit)
 305                                 ;
 306                 }
 307         }
 308 }
 309
 310 static __rte_always_inline void
 311 lpm_event_loop_burst(struct l3fwd_event_resources *evt_rsrc,
 312                 const uint8_t flags)
 313 {
 314         const int event_p_id = l3fwd_get_free_event_port(evt_rsrc);
 315         const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
 316                 evt_rsrc->evq.nb_queues - 1];
 317         const uint8_t event_d_id = evt_rsrc->event_d_id;
 318         const uint16_t deq_len = evt_rsrc->deq_depth;
 319         struct rte_event events[MAX_PKT_BURST];
 320         struct lcore_conf *lconf;
 321         unsigned int lcore_id;
 322         int i, nb_enq, nb_deq;
 323
 324         if (event_p_id < 0)
 325                 return;
 326
 327         lcore_id = rte_lcore_id();
 328
 329         lconf = &lcore_conf[lcore_id];
 330
 331         RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id);
 332
 333         while (!force_quit) {
 334                 /* Read events from RX queues */
 335                 nb_deq = rte_event_dequeue_burst(event_d_id, event_p_id,
 336                                 events, deq_len, 0);
 337                 if (nb_deq == 0) {
 338                         rte_pause();
 339                         continue;
 340                 }
 341
 342                 for (i = 0; i < nb_deq; i++) {
 343                         if (flags & L3FWD_EVENT_TX_ENQ) {
 344                                 events[i].queue_id = tx_q_id;
 345                                 events[i].op = RTE_EVENT_OP_FORWARD;
 346                         }
 347
 348                         if (flags & L3FWD_EVENT_TX_DIRECT)
 349                                 rte_event_eth_tx_adapter_txq_set(events[i].mbuf,
 350                                                                  0);
 351
 352                         lpm_process_event_pkt(lconf, events[i].mbuf);
 353                 }
 354
 355                 if (flags & L3FWD_EVENT_TX_ENQ) {
 356                         nb_enq = rte_event_enqueue_burst(event_d_id, event_p_id,
 357                                         events, nb_deq);
 358                         while (nb_enq < nb_deq && !force_quit)
 359                                 nb_enq += rte_event_enqueue_burst(event_d_id,
 360                                                 event_p_id, events + nb_enq,
 361                                                 nb_deq - nb_enq);
 362                 }
 363
 364                 if (flags & L3FWD_EVENT_TX_DIRECT) {
 365                         nb_enq = rte_event_eth_tx_adapter_enqueue(event_d_id,
 366                                         event_p_id, events, nb_deq, 0);
 367                         while (nb_enq < nb_deq && !force_quit)
 368                                 nb_enq += rte_event_eth_tx_adapter_enqueue(
 369                                                 event_d_id, event_p_id,
 370                                                 events + nb_enq,
 371                                                 nb_deq - nb_enq, 0);
 372                 }
 373         }
 374 }
 375
 376 static __rte_always_inline void
 377 lpm_event_loop(struct l3fwd_event_resources *evt_rsrc,
 378                  const uint8_t flags)
 379 {
 380         if (flags & L3FWD_EVENT_SINGLE)
 381                 lpm_event_loop_single(evt_rsrc, flags);
 382         if (flags & L3FWD_EVENT_BURST)
 383                 lpm_event_loop_burst(evt_rsrc, flags);
 384 }
 385
 386 int __rte_noinline
 387 lpm_event_main_loop_tx_d(__rte_unused void *dummy)
 388 {
 389         struct l3fwd_event_resources *evt_rsrc =
 390                                         l3fwd_get_eventdev_rsrc();
 391
 392         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT | L3FWD_EVENT_SINGLE);
 393         return 0;
 394 }
 395
 396 int __rte_noinline
 397 lpm_event_main_loop_tx_d_burst(__rte_unused void *dummy)
 398 {
 399         struct l3fwd_event_resources *evt_rsrc =
 400                                         l3fwd_get_eventdev_rsrc();
 401
 402         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT | L3FWD_EVENT_BURST);
 403         return 0;
 404 }
 405
 406 int __rte_noinline
 407 lpm_event_main_loop_tx_q(__rte_unused void *dummy)
 408 {
 409         struct l3fwd_event_resources *evt_rsrc =
 410                                         l3fwd_get_eventdev_rsrc();
 411
 412         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ | L3FWD_EVENT_SINGLE);
 413         return 0;
 414 }
 415
 416 int __rte_noinline
 417 lpm_event_main_loop_tx_q_burst(__rte_unused void *dummy)
 418 {
 419         struct l3fwd_event_resources *evt_rsrc =
 420                                         l3fwd_get_eventdev_rsrc();
 421
 422         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ | L3FWD_EVENT_BURST);
 423         return 0;
 424 }
 425
 426 void
 427 setup_lpm(const int socketid)
 428 {
 429         struct rte_lpm6_config config;
 430         struct rte_lpm_config config_ipv4;
 431         unsigned i;
 432         int ret;
 433         char s[64];
 434         char abuf[INET6_ADDRSTRLEN];
 435
 436         /* create the LPM table */
 437         config_ipv4.max_rules = IPV4_L3FWD_LPM_MAX_RULES;
 438         config_ipv4.number_tbl8s = IPV4_L3FWD_LPM_NUMBER_TBL8S;
 439         config_ipv4.flags = 0;
 440         snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
 441         ipv4_l3fwd_lpm_lookup_struct[socketid] =
 442                         rte_lpm_create(s, socketid, &config_ipv4);
 443         if (ipv4_l3fwd_lpm_lookup_struct[socketid] == NULL)
 444                 rte_exit(EXIT_FAILURE,
 445                         "Unable to create the l3fwd LPM table on socket %d\n",
 446                         socketid);
 447
 448         /* populate the LPM table */
 449         for (i = 0; i < RTE_DIM(ipv4_l3fwd_route_array); i++) {
 450                 struct in_addr in;
 451
 452                 /* skip unused ports */
 453                 if ((1 << ipv4_l3fwd_route_array[i].if_out &
 454                                 enabled_port_mask) == 0)
 455                         continue;
 456
 457                 ret = rte_lpm_add(ipv4_l3fwd_lpm_lookup_struct[socketid],
 458                         ipv4_l3fwd_route_array[i].ip,
 459                         ipv4_l3fwd_route_array[i].depth,
 460                         ipv4_l3fwd_route_array[i].if_out);
 461
 462                 if (ret < 0) {
 463                         rte_exit(EXIT_FAILURE,
 464                                 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
 465                                 i, socketid);
 466                 }
 467
 468                 in.s_addr = htonl(ipv4_l3fwd_route_array[i].ip);
 469                 printf("LPM: Adding route %s / %d (%d)\n",
 470                        inet_ntop(AF_INET, &in, abuf, sizeof(abuf)),
 471                         ipv4_l3fwd_route_array[i].depth,
 472                         ipv4_l3fwd_route_array[i].if_out);
 473         }
 474
 475         /* create the LPM6 table */
 476         snprintf(s, sizeof(s), "IPV6_L3FWD_LPM_%d", socketid);
 477
 478         config.max_rules = IPV6_L3FWD_LPM_MAX_RULES;
 479         config.number_tbl8s = IPV6_L3FWD_LPM_NUMBER_TBL8S;
 480         config.flags = 0;
 481         ipv6_l3fwd_lpm_lookup_struct[socketid] = rte_lpm6_create(s, socketid,
 482                                 &config);
 483         if (ipv6_l3fwd_lpm_lookup_struct[socketid] == NULL)
 484                 rte_exit(EXIT_FAILURE,
 485                         "Unable to create the l3fwd LPM table on socket %d\n",
 486                         socketid);
 487
 488         /* populate the LPM table */
 489         for (i = 0; i < RTE_DIM(ipv6_l3fwd_route_array); i++) {
 490
 491                 /* skip unused ports */
 492                 if ((1 << ipv6_l3fwd_route_array[i].if_out &
 493                                 enabled_port_mask) == 0)
 494                         continue;
 495
 496                 ret = rte_lpm6_add(ipv6_l3fwd_lpm_lookup_struct[socketid],
 497                         ipv6_l3fwd_route_array[i].ip,
 498                         ipv6_l3fwd_route_array[i].depth,
 499                         ipv6_l3fwd_route_array[i].if_out);
 500
 501                 if (ret < 0) {
 502                         rte_exit(EXIT_FAILURE,
 503                                 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
 504                                 i, socketid);
 505                 }
 506
 507                 printf("LPM: Adding route %s / %d (%d)\n",
 508                        inet_ntop(AF_INET6, ipv6_l3fwd_route_array[i].ip,
 509                                  abuf, sizeof(abuf)),
 510                        ipv6_l3fwd_route_array[i].depth,
 511                        ipv6_l3fwd_route_array[i].if_out);
 512         }
 513 }
 514
 515 int
 516 lpm_check_ptype(int portid)
 517 {
 518         int i, ret;
 519         int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
 520         uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
 521
 522         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
 523         if (ret <= 0)
 524                 return 0;
 525
 526         uint32_t ptypes[ret];
 527
 528         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
 529         for (i = 0; i < ret; ++i) {
 530                 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
 531                         ptype_l3_ipv4 = 1;
 532                 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
 533                         ptype_l3_ipv6 = 1;
 534         }
 535
 536         if (ptype_l3_ipv4 == 0)
 537                 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
 538
 539         if (ptype_l3_ipv6 == 0)
 540                 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
 541
 542         if (ptype_l3_ipv4 && ptype_l3_ipv6)
 543                 return 1;
 544
 545         return 0;
 546
 547 }
 548
 549 static inline void
 550 lpm_parse_ptype(struct rte_mbuf *m)
 551 {
 552         struct rte_ether_hdr *eth_hdr;
 553         uint32_t packet_type = RTE_PTYPE_UNKNOWN;
 554         uint16_t ether_type;
 555
 556         eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 557         ether_type = eth_hdr->ether_type;
 558         if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4))
 559                 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 560         else if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6))
 561                 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 562
 563         m->packet_type = packet_type;
 564 }
 565
 566 uint16_t
 567 lpm_cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
 568                    struct rte_mbuf *pkts[], uint16_t nb_pkts,
 569                    uint16_t max_pkts __rte_unused,
 570                    void *user_param __rte_unused)
 571 {
 572         unsigned int i;
 573
 574         if (unlikely(nb_pkts == 0))
 575                 return nb_pkts;
 576         rte_prefetch0(rte_pktmbuf_mtod(pkts[0], struct ether_hdr *));
 577         for (i = 0; i < (unsigned int) (nb_pkts - 1); ++i) {
 578                 rte_prefetch0(rte_pktmbuf_mtod(pkts[i+1],
 579                         struct ether_hdr *));
 580                 lpm_parse_ptype(pkts[i]);
 581         }
 582         lpm_parse_ptype(pkts[i]);
 583
 584         return nb_pkts;
 585 }
 586
 587 /* Return ipv4/ipv6 lpm fwd lookup struct. */
 588 void *
 589 lpm_get_ipv4_l3fwd_lookup_struct(const int socketid)
 590 {
 591         return ipv4_l3fwd_lpm_lookup_struct[socketid];
 592 }
 593
 594 void *
 595 lpm_get_ipv6_l3fwd_lookup_struct(const int socketid)
 596 {
 597         return ipv6_l3fwd_lpm_lookup_struct[socketid];
 598 }