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 /* Performing LPM-based lookups. 8< */
  44 static inline uint16_t
  45 lpm_get_ipv4_dst_port(const struct rte_ipv4_hdr *ipv4_hdr,
  46                       uint16_t portid,
  47                       struct rte_lpm *ipv4_l3fwd_lookup_struct)
  48 {
  49         uint32_t dst_ip = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
  50         uint32_t next_hop;
  51
  52         if (rte_lpm_lookup(ipv4_l3fwd_lookup_struct, dst_ip, &next_hop) == 0)
  53                 return next_hop;
  54         else
  55                 return portid;
  56 }
  57 /* >8 End of performing LPM-based lookups. */
  58
  59 static inline uint16_t
  60 lpm_get_ipv6_dst_port(const struct rte_ipv6_hdr *ipv6_hdr,
  61                       uint16_t portid,
  62                       struct rte_lpm6 *ipv6_l3fwd_lookup_struct)
  63 {
  64         const uint8_t *dst_ip = ipv6_hdr->dst_addr;
  65         uint32_t next_hop;
  66
  67         if (rte_lpm6_lookup(ipv6_l3fwd_lookup_struct, dst_ip, &next_hop) == 0)
  68                 return next_hop;
  69         else
  70                 return portid;
  71 }
  72
  73 static __rte_always_inline uint16_t
  74 lpm_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
  75                 uint16_t portid)
  76 {
  77         struct rte_ipv6_hdr *ipv6_hdr;
  78         struct rte_ipv4_hdr *ipv4_hdr;
  79         struct rte_ether_hdr *eth_hdr;
  80
  81         if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
  82
  83                 eth_hdr = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
  84                 ipv4_hdr = (struct rte_ipv4_hdr *)(eth_hdr + 1);
  85
  86                 return lpm_get_ipv4_dst_port(ipv4_hdr, portid,
  87                                              qconf->ipv4_lookup_struct);
  88         } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
  89
  90                 eth_hdr = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
  91                 ipv6_hdr = (struct rte_ipv6_hdr *)(eth_hdr + 1);
  92
  93                 return lpm_get_ipv6_dst_port(ipv6_hdr, portid,
  94                                              qconf->ipv6_lookup_struct);
  95         }
  96
  97         return portid;
  98 }
  99
 100 /*
 101  * lpm_get_dst_port optimized routine for packets where dst_ipv4 is already
 102  * precalculated. If packet is ipv6 dst_addr is taken directly from packet
 103  * header and dst_ipv4 value is not used.
 104  */
 105 static __rte_always_inline uint16_t
 106 lpm_get_dst_port_with_ipv4(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
 107         uint32_t dst_ipv4, uint16_t portid)
 108 {
 109         uint32_t next_hop;
 110         struct rte_ipv6_hdr *ipv6_hdr;
 111         struct rte_ether_hdr *eth_hdr;
 112
 113         if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
 114                 return (uint16_t) ((rte_lpm_lookup(qconf->ipv4_lookup_struct,
 115                                                    dst_ipv4, &next_hop) == 0)
 116                                    ? next_hop : portid);
 117
 118         } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
 119
 120                 eth_hdr = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
 121                 ipv6_hdr = (struct rte_ipv6_hdr *)(eth_hdr + 1);
 122
 123                 return (uint16_t) ((rte_lpm6_lookup(qconf->ipv6_lookup_struct,
 124                                 ipv6_hdr->dst_addr, &next_hop) == 0)
 125                                 ? next_hop : portid);
 126
 127         }
 128
 129         return portid;
 130 }
 131
 132 #if defined(RTE_ARCH_X86)
 133 #include "l3fwd_lpm_sse.h"
 134 #elif defined __ARM_NEON
 135 #include "l3fwd_lpm_neon.h"
 136 #elif defined(RTE_ARCH_PPC_64)
 137 #include "l3fwd_lpm_altivec.h"
 138 #else
 139 #include "l3fwd_lpm.h"
 140 #endif
 141
 142 /* main processing loop */
 143 int
 144 lpm_main_loop(__rte_unused void *dummy)
 145 {
 146         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 147         unsigned lcore_id;
 148         uint64_t prev_tsc, diff_tsc, cur_tsc;
 149         int i, nb_rx;
 150         uint16_t portid;
 151         uint8_t queueid;
 152         struct lcore_conf *qconf;
 153         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
 154                 US_PER_S * BURST_TX_DRAIN_US;
 155
 156         lcore_id = rte_lcore_id();
 157         qconf = &lcore_conf[lcore_id];
 158
 159         const uint16_t n_rx_q = qconf->n_rx_queue;
 160         const uint16_t n_tx_p = qconf->n_tx_port;
 161         if (n_rx_q == 0) {
 162                 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
 163                 return 0;
 164         }
 165
 166         RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
 167
 168         for (i = 0; i < n_rx_q; i++) {
 169
 170                 portid = qconf->rx_queue_list[i].port_id;
 171                 queueid = qconf->rx_queue_list[i].queue_id;
 172                 RTE_LOG(INFO, L3FWD,
 173                         " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
 174                         lcore_id, portid, queueid);
 175         }
 176
 177         cur_tsc = rte_rdtsc();
 178         prev_tsc = cur_tsc;
 179
 180         while (!force_quit) {
 181
 182                 /*
 183                  * TX burst queue drain
 184                  */
 185                 diff_tsc = cur_tsc - prev_tsc;
 186                 if (unlikely(diff_tsc > drain_tsc)) {
 187
 188                         for (i = 0; i < n_tx_p; ++i) {
 189                                 portid = qconf->tx_port_id[i];
 190                                 if (qconf->tx_mbufs[portid].len == 0)
 191                                         continue;
 192                                 send_burst(qconf,
 193                                         qconf->tx_mbufs[portid].len,
 194                                         portid);
 195                                 qconf->tx_mbufs[portid].len = 0;
 196                         }
 197
 198                         prev_tsc = cur_tsc;
 199                 }
 200
 201                 /*
 202                  * Read packet from RX queues
 203                  */
 204                 for (i = 0; i < n_rx_q; ++i) {
 205                         portid = qconf->rx_queue_list[i].port_id;
 206                         queueid = qconf->rx_queue_list[i].queue_id;
 207                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
 208                                 MAX_PKT_BURST);
 209                         if (nb_rx == 0)
 210                                 continue;
 211
 212 #if defined RTE_ARCH_X86 || defined __ARM_NEON \
 213                          || defined RTE_ARCH_PPC_64
 214                         l3fwd_lpm_send_packets(nb_rx, pkts_burst,
 215                                                 portid, qconf);
 216 #else
 217                         l3fwd_lpm_no_opt_send_packets(nb_rx, pkts_burst,
 218                                                         portid, qconf);
 219 #endif /* X86 */
 220                 }
 221
 222                 cur_tsc = rte_rdtsc();
 223         }
 224
 225         return 0;
 226 }
 227
 228 static __rte_always_inline uint16_t
 229 lpm_process_event_pkt(const struct lcore_conf *lconf, struct rte_mbuf *mbuf)
 230 {
 231         mbuf->port = lpm_get_dst_port(lconf, mbuf, mbuf->port);
 232
 233 #if defined RTE_ARCH_X86 || defined __ARM_NEON \
 234         || defined RTE_ARCH_PPC_64
 235         process_packet(mbuf, &mbuf->port);
 236 #else
 237
 238         struct rte_ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf,
 239                         struct rte_ether_hdr *);
 240 #ifdef DO_RFC_1812_CHECKS
 241         struct rte_ipv4_hdr *ipv4_hdr;
 242         if (RTE_ETH_IS_IPV4_HDR(mbuf->packet_type)) {
 243                 /* Handle IPv4 headers.*/
 244                 ipv4_hdr = rte_pktmbuf_mtod_offset(mbuf,
 245                                 struct rte_ipv4_hdr *,
 246                                 sizeof(struct rte_ether_hdr));
 247
 248                 if (is_valid_ipv4_pkt(ipv4_hdr, mbuf->pkt_len)
 249                                 < 0) {
 250                         mbuf->port = BAD_PORT;
 251                         continue;
 252                 }
 253                 /* Update time to live and header checksum */
 254                 --(ipv4_hdr->time_to_live);
 255                 ++(ipv4_hdr->hdr_checksum);
 256         }
 257 #endif
 258         /* dst addr */
 259         *(uint64_t *)&eth_hdr->dst_addr = dest_eth_addr[mbuf->port];
 260
 261         /* src addr */
 262         rte_ether_addr_copy(&ports_eth_addr[mbuf->port],
 263                         &eth_hdr->src_addr);
 264 #endif
 265         return mbuf->port;
 266 }
 267
 268 static __rte_always_inline void
 269 lpm_event_loop_single(struct l3fwd_event_resources *evt_rsrc,
 270                 const uint8_t flags)
 271 {
 272         const int event_p_id = l3fwd_get_free_event_port(evt_rsrc);
 273         const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
 274                 evt_rsrc->evq.nb_queues - 1];
 275         const uint8_t event_d_id = evt_rsrc->event_d_id;
 276         struct lcore_conf *lconf;
 277         unsigned int lcore_id;
 278         struct rte_event ev;
 279
 280         if (event_p_id < 0)
 281                 return;
 282
 283         lcore_id = rte_lcore_id();
 284         lconf = &lcore_conf[lcore_id];
 285
 286         RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id);
 287         while (!force_quit) {
 288                 if (!rte_event_dequeue_burst(event_d_id, event_p_id, &ev, 1, 0))
 289                         continue;
 290
 291                 if (lpm_process_event_pkt(lconf, ev.mbuf) == BAD_PORT) {
 292                         rte_pktmbuf_free(ev.mbuf);
 293                         continue;
 294                 }
 295
 296                 if (flags & L3FWD_EVENT_TX_ENQ) {
 297                         ev.queue_id = tx_q_id;
 298                         ev.op = RTE_EVENT_OP_FORWARD;
 299                         while (rte_event_enqueue_burst(event_d_id, event_p_id,
 300                                                 &ev, 1) && !force_quit)
 301                                 ;
 302                 }
 303
 304                 if (flags & L3FWD_EVENT_TX_DIRECT) {
 305                         rte_event_eth_tx_adapter_txq_set(ev.mbuf, 0);
 306                         while (!rte_event_eth_tx_adapter_enqueue(event_d_id,
 307                                                 event_p_id, &ev, 1, 0) &&
 308                                         !force_quit)
 309                                 ;
 310                 }
 311         }
 312 }
 313
 314 static __rte_always_inline void
 315 lpm_event_loop_burst(struct l3fwd_event_resources *evt_rsrc,
 316                 const uint8_t flags)
 317 {
 318         const int event_p_id = l3fwd_get_free_event_port(evt_rsrc);
 319         const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
 320                 evt_rsrc->evq.nb_queues - 1];
 321         const uint8_t event_d_id = evt_rsrc->event_d_id;
 322         const uint16_t deq_len = evt_rsrc->deq_depth;
 323         struct rte_event events[MAX_PKT_BURST];
 324         struct lcore_conf *lconf;
 325         unsigned int lcore_id;
 326         int i, nb_enq, nb_deq;
 327
 328         if (event_p_id < 0)
 329                 return;
 330
 331         lcore_id = rte_lcore_id();
 332
 333         lconf = &lcore_conf[lcore_id];
 334
 335         RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id);
 336
 337         while (!force_quit) {
 338                 /* Read events from RX queues */
 339                 nb_deq = rte_event_dequeue_burst(event_d_id, event_p_id,
 340                                 events, deq_len, 0);
 341                 if (nb_deq == 0) {
 342                         rte_pause();
 343                         continue;
 344                 }
 345
 346                 for (i = 0; i < nb_deq; i++) {
 347                         if (flags & L3FWD_EVENT_TX_ENQ) {
 348                                 events[i].queue_id = tx_q_id;
 349                                 events[i].op = RTE_EVENT_OP_FORWARD;
 350                         }
 351
 352                         if (flags & L3FWD_EVENT_TX_DIRECT)
 353                                 rte_event_eth_tx_adapter_txq_set(events[i].mbuf,
 354                                                                  0);
 355
 356                         lpm_process_event_pkt(lconf, events[i].mbuf);
 357                 }
 358
 359                 if (flags & L3FWD_EVENT_TX_ENQ) {
 360                         nb_enq = rte_event_enqueue_burst(event_d_id, event_p_id,
 361                                         events, nb_deq);
 362                         while (nb_enq < nb_deq && !force_quit)
 363                                 nb_enq += rte_event_enqueue_burst(event_d_id,
 364                                                 event_p_id, events + nb_enq,
 365                                                 nb_deq - nb_enq);
 366                 }
 367
 368                 if (flags & L3FWD_EVENT_TX_DIRECT) {
 369                         nb_enq = rte_event_eth_tx_adapter_enqueue(event_d_id,
 370                                         event_p_id, events, nb_deq, 0);
 371                         while (nb_enq < nb_deq && !force_quit)
 372                                 nb_enq += rte_event_eth_tx_adapter_enqueue(
 373                                                 event_d_id, event_p_id,
 374                                                 events + nb_enq,
 375                                                 nb_deq - nb_enq, 0);
 376                 }
 377         }
 378 }
 379
 380 static __rte_always_inline void
 381 lpm_event_loop(struct l3fwd_event_resources *evt_rsrc,
 382                  const uint8_t flags)
 383 {
 384         if (flags & L3FWD_EVENT_SINGLE)
 385                 lpm_event_loop_single(evt_rsrc, flags);
 386         if (flags & L3FWD_EVENT_BURST)
 387                 lpm_event_loop_burst(evt_rsrc, flags);
 388 }
 389
 390 int __rte_noinline
 391 lpm_event_main_loop_tx_d(__rte_unused void *dummy)
 392 {
 393         struct l3fwd_event_resources *evt_rsrc =
 394                                         l3fwd_get_eventdev_rsrc();
 395
 396         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT | L3FWD_EVENT_SINGLE);
 397         return 0;
 398 }
 399
 400 int __rte_noinline
 401 lpm_event_main_loop_tx_d_burst(__rte_unused void *dummy)
 402 {
 403         struct l3fwd_event_resources *evt_rsrc =
 404                                         l3fwd_get_eventdev_rsrc();
 405
 406         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT | L3FWD_EVENT_BURST);
 407         return 0;
 408 }
 409
 410 int __rte_noinline
 411 lpm_event_main_loop_tx_q(__rte_unused void *dummy)
 412 {
 413         struct l3fwd_event_resources *evt_rsrc =
 414                                         l3fwd_get_eventdev_rsrc();
 415
 416         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ | L3FWD_EVENT_SINGLE);
 417         return 0;
 418 }
 419
 420 int __rte_noinline
 421 lpm_event_main_loop_tx_q_burst(__rte_unused void *dummy)
 422 {
 423         struct l3fwd_event_resources *evt_rsrc =
 424                                         l3fwd_get_eventdev_rsrc();
 425
 426         lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ | L3FWD_EVENT_BURST);
 427         return 0;
 428 }
 429
 430 static __rte_always_inline void
 431 lpm_process_event_vector(struct rte_event_vector *vec, struct lcore_conf *lconf)
 432 {
 433         struct rte_mbuf **mbufs = vec->mbufs;
 434         int i;
 435
 436         /* Process first packet to init vector attributes */
 437         lpm_process_event_pkt(lconf, mbufs[0]);
 438         if (vec->attr_valid) {
 439                 if (mbufs[0]->port != BAD_PORT)
 440                         vec->port = mbufs[0]->port;
 441                 else
 442                         vec->attr_valid = 0;
 443         }
 444
 445         for (i = 1; i < vec->nb_elem; i++) {
 446                 lpm_process_event_pkt(lconf, mbufs[i]);
 447                 event_vector_attr_validate(vec, mbufs[i]);
 448         }
 449 }
 450
 451 /* Same eventdev loop for single and burst of vector */
 452 static __rte_always_inline void
 453 lpm_event_loop_vector(struct l3fwd_event_resources *evt_rsrc,
 454                       const uint8_t flags)
 455 {
 456         const int event_p_id = l3fwd_get_free_event_port(evt_rsrc);
 457         const uint8_t tx_q_id =
 458                 evt_rsrc->evq.event_q_id[evt_rsrc->evq.nb_queues - 1];
 459         const uint8_t event_d_id = evt_rsrc->event_d_id;
 460         const uint16_t deq_len = evt_rsrc->deq_depth;
 461         struct rte_event events[MAX_PKT_BURST];
 462         struct lcore_conf *lconf;
 463         unsigned int lcore_id;
 464         int i, nb_enq, nb_deq;
 465
 466         if (event_p_id < 0)
 467                 return;
 468
 469         lcore_id = rte_lcore_id();
 470         lconf = &lcore_conf[lcore_id];
 471
 472         RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id);
 473
 474         while (!force_quit) {
 475                 /* Read events from RX queues */
 476                 nb_deq = rte_event_dequeue_burst(event_d_id, event_p_id, events,
 477                                                  deq_len, 0);
 478                 if (nb_deq == 0) {
 479                         rte_pause();
 480                         continue;
 481                 }
 482
 483                 for (i = 0; i < nb_deq; i++) {
 484                         if (flags & L3FWD_EVENT_TX_ENQ) {
 485                                 events[i].queue_id = tx_q_id;
 486                                 events[i].op = RTE_EVENT_OP_FORWARD;
 487                         }
 488
 489                         lpm_process_event_vector(events[i].vec, lconf);
 490
 491                         if (flags & L3FWD_EVENT_TX_DIRECT)
 492                                 event_vector_txq_set(events[i].vec, 0);
 493                 }
 494
 495                 if (flags & L3FWD_EVENT_TX_ENQ) {
 496                         nb_enq = rte_event_enqueue_burst(event_d_id, event_p_id,
 497                                                          events, nb_deq);
 498                         while (nb_enq < nb_deq && !force_quit)
 499                                 nb_enq += rte_event_enqueue_burst(
 500                                         event_d_id, event_p_id, events + nb_enq,
 501                                         nb_deq - nb_enq);
 502                 }
 503
 504                 if (flags & L3FWD_EVENT_TX_DIRECT) {
 505                         nb_enq = rte_event_eth_tx_adapter_enqueue(
 506                                 event_d_id, event_p_id, events, nb_deq, 0);
 507                         while (nb_enq < nb_deq && !force_quit)
 508                                 nb_enq += rte_event_eth_tx_adapter_enqueue(
 509                                         event_d_id, event_p_id, events + nb_enq,
 510                                         nb_deq - nb_enq, 0);
 511                 }
 512         }
 513 }
 514
 515 int __rte_noinline
 516 lpm_event_main_loop_tx_d_vector(__rte_unused void *dummy)
 517 {
 518         struct l3fwd_event_resources *evt_rsrc = l3fwd_get_eventdev_rsrc();
 519
 520         lpm_event_loop_vector(evt_rsrc, L3FWD_EVENT_TX_DIRECT);
 521         return 0;
 522 }
 523
 524 int __rte_noinline
 525 lpm_event_main_loop_tx_d_burst_vector(__rte_unused void *dummy)
 526 {
 527         struct l3fwd_event_resources *evt_rsrc = l3fwd_get_eventdev_rsrc();
 528
 529         lpm_event_loop_vector(evt_rsrc, L3FWD_EVENT_TX_DIRECT);
 530         return 0;
 531 }
 532
 533 int __rte_noinline
 534 lpm_event_main_loop_tx_q_vector(__rte_unused void *dummy)
 535 {
 536         struct l3fwd_event_resources *evt_rsrc = l3fwd_get_eventdev_rsrc();
 537
 538         lpm_event_loop_vector(evt_rsrc, L3FWD_EVENT_TX_ENQ);
 539         return 0;
 540 }
 541
 542 int __rte_noinline
 543 lpm_event_main_loop_tx_q_burst_vector(__rte_unused void *dummy)
 544 {
 545         struct l3fwd_event_resources *evt_rsrc = l3fwd_get_eventdev_rsrc();
 546
 547         lpm_event_loop_vector(evt_rsrc, L3FWD_EVENT_TX_ENQ);
 548         return 0;
 549 }
 550
 551 void
 552 setup_lpm(const int socketid)
 553 {
 554         struct rte_eth_dev_info dev_info;
 555         struct rte_lpm6_config config;
 556         struct rte_lpm_config config_ipv4;
 557         unsigned i;
 558         int ret;
 559         char s[64];
 560         char abuf[INET6_ADDRSTRLEN];
 561
 562         /* create the LPM table */
 563         config_ipv4.max_rules = IPV4_L3FWD_LPM_MAX_RULES;
 564         config_ipv4.number_tbl8s = IPV4_L3FWD_LPM_NUMBER_TBL8S;
 565         config_ipv4.flags = 0;
 566         snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
 567         ipv4_l3fwd_lpm_lookup_struct[socketid] =
 568                         rte_lpm_create(s, socketid, &config_ipv4);
 569         if (ipv4_l3fwd_lpm_lookup_struct[socketid] == NULL)
 570                 rte_exit(EXIT_FAILURE,
 571                         "Unable to create the l3fwd LPM table on socket %d\n",
 572                         socketid);
 573
 574         /* populate the LPM table */
 575         for (i = 0; i < RTE_DIM(ipv4_l3fwd_route_array); i++) {
 576                 struct in_addr in;
 577
 578                 /* skip unused ports */
 579                 if ((1 << ipv4_l3fwd_route_array[i].if_out &
 580                                 enabled_port_mask) == 0)
 581                         continue;
 582
 583                 rte_eth_dev_info_get(ipv4_l3fwd_route_array[i].if_out,
 584                                      &dev_info);
 585                 ret = rte_lpm_add(ipv4_l3fwd_lpm_lookup_struct[socketid],
 586                         ipv4_l3fwd_route_array[i].ip,
 587                         ipv4_l3fwd_route_array[i].depth,
 588                         ipv4_l3fwd_route_array[i].if_out);
 589
 590                 if (ret < 0) {
 591                         rte_exit(EXIT_FAILURE,
 592                                 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
 593                                 i, socketid);
 594                 }
 595
 596                 in.s_addr = htonl(ipv4_l3fwd_route_array[i].ip);
 597                 printf("LPM: Adding route %s / %d (%d) [%s]\n",
 598                        inet_ntop(AF_INET, &in, abuf, sizeof(abuf)),
 599                        ipv4_l3fwd_route_array[i].depth,
 600                        ipv4_l3fwd_route_array[i].if_out, dev_info.device->name);
 601         }
 602
 603         /* create the LPM6 table */
 604         snprintf(s, sizeof(s), "IPV6_L3FWD_LPM_%d", socketid);
 605
 606         config.max_rules = IPV6_L3FWD_LPM_MAX_RULES;
 607         config.number_tbl8s = IPV6_L3FWD_LPM_NUMBER_TBL8S;
 608         config.flags = 0;
 609         ipv6_l3fwd_lpm_lookup_struct[socketid] = rte_lpm6_create(s, socketid,
 610                                 &config);
 611         if (ipv6_l3fwd_lpm_lookup_struct[socketid] == NULL)
 612                 rte_exit(EXIT_FAILURE,
 613                         "Unable to create the l3fwd LPM table on socket %d\n",
 614                         socketid);
 615
 616         /* populate the LPM table */
 617         for (i = 0; i < RTE_DIM(ipv6_l3fwd_route_array); i++) {
 618
 619                 /* skip unused ports */
 620                 if ((1 << ipv6_l3fwd_route_array[i].if_out &
 621                                 enabled_port_mask) == 0)
 622                         continue;
 623
 624                 rte_eth_dev_info_get(ipv4_l3fwd_route_array[i].if_out,
 625                                      &dev_info);
 626                 ret = rte_lpm6_add(ipv6_l3fwd_lpm_lookup_struct[socketid],
 627                         ipv6_l3fwd_route_array[i].ip,
 628                         ipv6_l3fwd_route_array[i].depth,
 629                         ipv6_l3fwd_route_array[i].if_out);
 630
 631                 if (ret < 0) {
 632                         rte_exit(EXIT_FAILURE,
 633                                 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
 634                                 i, socketid);
 635                 }
 636
 637                 printf("LPM: Adding route %s / %d (%d) [%s]\n",
 638                        inet_ntop(AF_INET6, ipv6_l3fwd_route_array[i].ip, abuf,
 639                                  sizeof(abuf)),
 640                        ipv6_l3fwd_route_array[i].depth,
 641                        ipv6_l3fwd_route_array[i].if_out, dev_info.device->name);
 642         }
 643 }
 644
 645 int
 646 lpm_check_ptype(int portid)
 647 {
 648         int i, ret;
 649         int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
 650         uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
 651
 652         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
 653         if (ret <= 0)
 654                 return 0;
 655
 656         uint32_t ptypes[ret];
 657
 658         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
 659         for (i = 0; i < ret; ++i) {
 660                 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
 661                         ptype_l3_ipv4 = 1;
 662                 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
 663                         ptype_l3_ipv6 = 1;
 664         }
 665
 666         if (ptype_l3_ipv4 == 0)
 667                 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
 668
 669         if (ptype_l3_ipv6 == 0)
 670                 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
 671
 672         if (ptype_l3_ipv4 && ptype_l3_ipv6)
 673                 return 1;
 674
 675         return 0;
 676
 677 }
 678
 679 static inline void
 680 lpm_parse_ptype(struct rte_mbuf *m)
 681 {
 682         struct rte_ether_hdr *eth_hdr;
 683         uint32_t packet_type = RTE_PTYPE_UNKNOWN;
 684         uint16_t ether_type;
 685
 686         eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 687         ether_type = eth_hdr->ether_type;
 688         if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4))
 689                 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 690         else if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6))
 691                 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 692
 693         m->packet_type = packet_type;
 694 }
 695
 696 uint16_t
 697 lpm_cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
 698                    struct rte_mbuf *pkts[], uint16_t nb_pkts,
 699                    uint16_t max_pkts __rte_unused,
 700                    void *user_param __rte_unused)
 701 {
 702         unsigned int i;
 703
 704         if (unlikely(nb_pkts == 0))
 705                 return nb_pkts;
 706         rte_prefetch0(rte_pktmbuf_mtod(pkts[0], struct ether_hdr *));
 707         for (i = 0; i < (unsigned int) (nb_pkts - 1); ++i) {
 708                 rte_prefetch0(rte_pktmbuf_mtod(pkts[i+1],
 709                         struct ether_hdr *));
 710                 lpm_parse_ptype(pkts[i]);
 711         }
 712         lpm_parse_ptype(pkts[i]);
 713
 714         return nb_pkts;
 715 }
 716
 717 /* Return ipv4/ipv6 lpm fwd lookup struct. */
 718 void *
 719 lpm_get_ipv4_l3fwd_lookup_struct(const int socketid)
 720 {
 721         return ipv4_l3fwd_lpm_lookup_struct[socketid];
 722 }
 723
 724 void *
 725 lpm_get_ipv6_l3fwd_lookup_struct(const int socketid)
 726 {
 727         return ipv6_l3fwd_lpm_lookup_struct[socketid];
 728 }