examples/l3fwd-vf/main.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <stdint.h>
  37 #include <inttypes.h>
  38 #include <sys/types.h>
  39 #include <string.h>
  40 #include <sys/queue.h>
  41 #include <stdarg.h>
  42 #include <errno.h>
  43 #include <getopt.h>
  44 #include <signal.h>
  45
  46 #include <rte_common.h>
  47 #include <rte_byteorder.h>
  48 #include <rte_log.h>
  49 #include <rte_memory.h>
  50 #include <rte_memcpy.h>
  51 #include <rte_memzone.h>
  52 #include <rte_tailq.h>
  53 #include <rte_eal.h>
  54 #include <rte_per_lcore.h>
  55 #include <rte_launch.h>
  56 #include <rte_atomic.h>
  57 #include <rte_cycles.h>
  58 #include <rte_prefetch.h>
  59 #include <rte_lcore.h>
  60 #include <rte_per_lcore.h>
  61 #include <rte_branch_prediction.h>
  62 #include <rte_interrupts.h>
  63 #include <rte_pci.h>
  64 #include <rte_random.h>
  65 #include <rte_debug.h>
  66 #include <rte_ether.h>
  67 #include <rte_ethdev.h>
  68 #include <rte_ring.h>
  69 #include <rte_mempool.h>
  70 #include <rte_mbuf.h>
  71 #include <rte_ip.h>
  72 #include <rte_tcp.h>
  73 #include <rte_udp.h>
  74 #include <rte_string_fns.h>
  75
  76 #include "main.h"
  77
  78 #define APP_LOOKUP_EXACT_MATCH          0
  79 #define APP_LOOKUP_LPM                  1
  80 #define DO_RFC_1812_CHECKS
  81
  82 //#define APP_LOOKUP_METHOD             APP_LOOKUP_EXACT_MATCH
  83 #ifndef APP_LOOKUP_METHOD
  84 #define APP_LOOKUP_METHOD             APP_LOOKUP_LPM
  85 #endif
  86
  87 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
  88 #include <rte_hash.h>
  89 #elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
  90 #include <rte_lpm.h>
  91 #else
  92 #error "APP_LOOKUP_METHOD set to incorrect value"
  93 #endif
  94
  95 #define RTE_LOGTYPE_L3FWD RTE_LOGTYPE_USER1
  96
  97 #define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
  98 #define NB_MBUF   8192
  99
 100 /*
 101  * RX and TX Prefetch, Host, and Write-back threshold values should be
 102  * carefully set for optimal performance. Consult the network
 103  * controller's datasheet and supporting DPDK documentation for guidance
 104  * on how these parameters should be set.
 105  */
 106 #define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
 107 #define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
 108 #define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
 109
 110 /*
 111  * These default values are optimized for use with the Intel(R) 82599 10 GbE
 112  * Controller and the DPDK ixgbe PMD. Consider using other values for other
 113  * network controllers and/or network drivers.
 114  */
 115 #define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
 116 #define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
 117 #define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
 118
 119 #define MAX_PKT_BURST 32
 120 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 121
 122 #define NB_SOCKETS 8
 123
 124 #define SOCKET0 0
 125
 126 /* Configure how many packets ahead to prefetch, when reading packets */
 127 #define PREFETCH_OFFSET 3
 128
 129 /*
 130  * Configurable number of RX/TX ring descriptors
 131  */
 132 #define RTE_TEST_RX_DESC_DEFAULT 128
 133 #define RTE_TEST_TX_DESC_DEFAULT 512
 134 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
 135 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
 136
 137 /* ethernet addresses of ports */
 138 static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
 139
 140 /* mask of enabled ports */
 141 static uint32_t enabled_port_mask = 0;
 142 static int numa_on = 1; /**< NUMA is enabled by default. */
 143
 144 struct mbuf_table {
 145         uint16_t len;
 146         struct rte_mbuf *m_table[MAX_PKT_BURST];
 147 };
 148
 149 struct lcore_rx_queue {
 150         uint8_t port_id;
 151         uint8_t queue_id;
 152 } __rte_cache_aligned;
 153
 154 #define MAX_RX_QUEUE_PER_LCORE 16
 155 #define MAX_TX_QUEUE_PER_PORT 1
 156 #define MAX_RX_QUEUE_PER_PORT 1
 157
 158 #define MAX_LCORE_PARAMS 1024
 159 struct lcore_params {
 160         uint8_t port_id;
 161         uint8_t queue_id;
 162         uint8_t lcore_id;
 163 } __rte_cache_aligned;
 164
 165 static struct lcore_params lcore_params_array[MAX_LCORE_PARAMS];
 166 static struct lcore_params lcore_params_array_default[] = {
 167         {0, 0, 2},
 168         {0, 1, 2},
 169         {0, 2, 2},
 170         {1, 0, 2},
 171         {1, 1, 2},
 172         {1, 2, 2},
 173         {2, 0, 2},
 174         {3, 0, 3},
 175         {3, 1, 3},
 176 };
 177
 178 static struct lcore_params * lcore_params = lcore_params_array_default;
 179 static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
 180                                 sizeof(lcore_params_array_default[0]);
 181
 182 static struct rte_eth_conf port_conf = {
 183         .rxmode = {
 184                 .split_hdr_size = 0,
 185                 .header_split   = 0, /**< Header Split disabled */
 186                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
 187                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 188                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 189                 .hw_strip_crc   = 1, /**< CRC stripped by hardware */
 190         },
 191         .rx_adv_conf = {
 192                 .rss_conf = {
 193                         .rss_key = NULL,
 194                         .rss_hf = ETH_RSS_IPV4 | ETH_RSS_IPV6,
 195                 },
 196         },
 197         .txmode = {
 198                 .mq_mode = ETH_MQ_TX_NONE,
 199         },
 200 };
 201
 202 static const struct rte_eth_rxconf rx_conf = {
 203         .rx_thresh = {
 204                 .pthresh = RX_PTHRESH,
 205                 .hthresh = RX_HTHRESH,
 206                 .wthresh = RX_WTHRESH,
 207         },
 208 };
 209
 210 static const struct rte_eth_txconf tx_conf = {
 211         .tx_thresh = {
 212                 .pthresh = TX_PTHRESH,
 213                 .hthresh = TX_HTHRESH,
 214                 .wthresh = TX_WTHRESH,
 215         },
 216         .tx_free_thresh = 0, /* Use PMD default values */
 217         .tx_rs_thresh = 0, /* Use PMD default values */
 218 };
 219
 220 static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 221
 222
 223 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 224
 225 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
 226 #include <rte_hash_crc.h>
 227 #define DEFAULT_HASH_FUNC       rte_hash_crc
 228 #else
 229 #include <rte_jhash.h>
 230 #define DEFAULT_HASH_FUNC       rte_jhash
 231 #endif
 232
 233 struct ipv4_5tuple {
 234         uint32_t ip_dst;
 235         uint32_t ip_src;
 236         uint16_t port_dst;
 237         uint16_t port_src;
 238         uint8_t proto;
 239 } __attribute__((__packed__));
 240
 241 struct l3fwd_route {
 242         struct ipv4_5tuple key;
 243         uint8_t if_out;
 244 };
 245
 246 static struct l3fwd_route l3fwd_route_array[] = {
 247         {{IPv4(100,10,0,1), IPv4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0},
 248         {{IPv4(100,20,0,2), IPv4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1},
 249         {{IPv4(100,30,0,3), IPv4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2},
 250         {{IPv4(100,40,0,4), IPv4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3},
 251 };
 252
 253 typedef struct rte_hash lookup_struct_t;
 254 static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS];
 255
 256 #define L3FWD_HASH_ENTRIES      1024
 257 struct rte_hash_parameters l3fwd_hash_params = {
 258         .name = "l3fwd_hash_0",
 259         .entries = L3FWD_HASH_ENTRIES,
 260         .bucket_entries = 4,
 261         .key_len = sizeof(struct ipv4_5tuple),
 262         .hash_func = DEFAULT_HASH_FUNC,
 263         .hash_func_init_val = 0,
 264         .socket_id = SOCKET0,
 265 };
 266
 267 #define L3FWD_NUM_ROUTES \
 268         (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))
 269
 270 static uint8_t l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 271 #endif
 272
 273 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 274 struct l3fwd_route {
 275         uint32_t ip;
 276         uint8_t  depth;
 277         uint8_t  if_out;
 278 };
 279
 280 static struct l3fwd_route l3fwd_route_array[] = {
 281         {IPv4(1,1,1,0), 24, 0},
 282         {IPv4(2,1,1,0), 24, 1},
 283         {IPv4(3,1,1,0), 24, 2},
 284         {IPv4(4,1,1,0), 24, 3},
 285         {IPv4(5,1,1,0), 24, 4},
 286         {IPv4(6,1,1,0), 24, 5},
 287         {IPv4(7,1,1,0), 24, 6},
 288         {IPv4(8,1,1,0), 24, 7},
 289 };
 290
 291 #define L3FWD_NUM_ROUTES \
 292         (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))
 293
 294 #define L3FWD_LPM_MAX_RULES     1024
 295
 296 typedef struct rte_lpm lookup_struct_t;
 297 static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS];
 298 #endif
 299
 300 struct lcore_conf {
 301         uint16_t n_rx_queue;
 302         struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 303         uint16_t tx_queue_id;
 304         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 305         lookup_struct_t * lookup_struct;
 306 } __rte_cache_aligned;
 307
 308 static struct lcore_conf lcore_conf[RTE_MAX_LCORE];
 309
 310 /* Send burst of packets on an output interface */
 311 static inline int
 312 send_burst(struct lcore_conf *qconf, uint16_t n, uint8_t port)
 313 {
 314         struct rte_mbuf **m_table;
 315         int ret;
 316         uint16_t queueid;
 317
 318         queueid = qconf->tx_queue_id;
 319         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 320
 321         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 322         if (unlikely(ret < n)) {
 323                 do {
 324                         rte_pktmbuf_free(m_table[ret]);
 325                 } while (++ret < n);
 326         }
 327
 328         return 0;
 329 }
 330
 331 /* Enqueue a single packet, and send burst if queue is filled */
 332 static inline int
 333 send_single_packet(struct rte_mbuf *m, uint8_t port)
 334 {
 335         uint32_t lcore_id;
 336         uint16_t len;
 337         struct lcore_conf *qconf;
 338
 339         lcore_id = rte_lcore_id();
 340
 341         qconf = &lcore_conf[lcore_id];
 342         len = qconf->tx_mbufs[port].len;
 343         qconf->tx_mbufs[port].m_table[len] = m;
 344         len++;
 345
 346         /* enough pkts to be sent */
 347         if (unlikely(len == MAX_PKT_BURST)) {
 348                 send_burst(qconf, MAX_PKT_BURST, port);
 349                 len = 0;
 350         }
 351
 352         qconf->tx_mbufs[port].len = len;
 353         return 0;
 354 }
 355
 356 #ifdef DO_RFC_1812_CHECKS
 357 static inline int
 358 is_valid_ipv4_pkt(struct ipv4_hdr *pkt, uint32_t link_len)
 359 {
 360         /* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */
 361         /*
 362          * 1. The packet length reported by the Link Layer must be large
 363          * enough to hold the minimum length legal IP datagram (20 bytes).
 364          */
 365         if (link_len < sizeof(struct ipv4_hdr))
 366                 return -1;
 367
 368         /* 2. The IP checksum must be correct. */
 369         /* this is checked in H/W */
 370
 371         /*
 372          * 3. The IP version number must be 4. If the version number is not 4
 373          * then the packet may be another version of IP, such as IPng or
 374          * ST-II.
 375          */
 376         if (((pkt->version_ihl) >> 4) != 4)
 377                 return -3;
 378         /*
 379          * 4. The IP header length field must be large enough to hold the
 380          * minimum length legal IP datagram (20 bytes = 5 words).
 381          */
 382         if ((pkt->version_ihl & 0xf) < 5)
 383                 return -4;
 384
 385         /*
 386          * 5. The IP total length field must be large enough to hold the IP
 387          * datagram header, whose length is specified in the IP header length
 388          * field.
 389          */
 390         if (rte_cpu_to_be_16(pkt->total_length) < sizeof(struct ipv4_hdr))
 391                 return -5;
 392
 393         return 0;
 394 }
 395 #endif
 396
 397 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 398 static void
 399 print_key(struct ipv4_5tuple key)
 400 {
 401         printf("IP dst = %08x, IP src = %08x, port dst = %d, port src = %d, proto = %d\n",
 402                (unsigned)key.ip_dst, (unsigned)key.ip_src, key.port_dst, key.port_src, key.proto);
 403 }
 404
 405 static inline uint8_t
 406 get_dst_port(struct ipv4_hdr *ipv4_hdr,  uint8_t portid, lookup_struct_t * l3fwd_lookup_struct)
 407 {
 408         struct ipv4_5tuple key;
 409         struct tcp_hdr *tcp;
 410         struct udp_hdr *udp;
 411         int ret = 0;
 412
 413         key.ip_dst = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
 414         key.ip_src = rte_be_to_cpu_32(ipv4_hdr->src_addr);
 415         key.proto = ipv4_hdr->next_proto_id;
 416
 417         switch (ipv4_hdr->next_proto_id) {
 418         case IPPROTO_TCP:
 419                 tcp = (struct tcp_hdr *)((unsigned char *) ipv4_hdr +
 420                                         sizeof(struct ipv4_hdr));
 421                 key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
 422                 key.port_src = rte_be_to_cpu_16(tcp->src_port);
 423                 break;
 424
 425         case IPPROTO_UDP:
 426                 udp = (struct udp_hdr *)((unsigned char *) ipv4_hdr +
 427                                         sizeof(struct ipv4_hdr));
 428                 key.port_dst = rte_be_to_cpu_16(udp->dst_port);
 429                 key.port_src = rte_be_to_cpu_16(udp->src_port);
 430                 break;
 431
 432         default:
 433                 key.port_dst = 0;
 434                 key.port_src = 0;
 435         }
 436
 437         /* Find destination port */
 438         ret = rte_hash_lookup(l3fwd_lookup_struct, (const void *)&key);
 439         return (uint8_t)((ret < 0)? portid : l3fwd_out_if[ret]);
 440 }
 441 #endif
 442
 443 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 444 static inline uint8_t
 445 get_dst_port(struct ipv4_hdr *ipv4_hdr,  uint8_t portid, lookup_struct_t * l3fwd_lookup_struct)
 446 {
 447         uint8_t next_hop;
 448
 449         return (uint8_t) ((rte_lpm_lookup(l3fwd_lookup_struct,
 450                         rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0)?
 451                         next_hop : portid);
 452 }
 453 #endif
 454
 455 static inline void
 456 l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, lookup_struct_t * l3fwd_lookup_struct)
 457 {
 458         struct ether_hdr *eth_hdr;
 459         struct ipv4_hdr *ipv4_hdr;
 460         void *tmp;
 461         uint8_t dst_port;
 462
 463         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 464
 465         ipv4_hdr = (struct ipv4_hdr *)(rte_pktmbuf_mtod(m, unsigned char *) +
 466                                 sizeof(struct ether_hdr));
 467
 468 #ifdef DO_RFC_1812_CHECKS
 469         /* Check to make sure the packet is valid (RFC1812) */
 470         if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt.pkt_len) < 0) {
 471                 rte_pktmbuf_free(m);
 472                 return;
 473         }
 474 #endif
 475
 476         dst_port = get_dst_port(ipv4_hdr, portid, l3fwd_lookup_struct);
 477         if (dst_port >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port) == 0)
 478                 dst_port = portid;
 479
 480         /* 02:00:00:00:00:xx */
 481         tmp = &eth_hdr->d_addr.addr_bytes[0];
 482         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 483
 484 #ifdef DO_RFC_1812_CHECKS
 485         /* Update time to live and header checksum */
 486         --(ipv4_hdr->time_to_live);
 487         ++(ipv4_hdr->hdr_checksum);
 488 #endif
 489
 490         /* src addr */
 491         ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 492
 493         send_single_packet(m, dst_port);
 494
 495 }
 496
 497 /* main processing loop */
 498 static int
 499 main_loop(__attribute__((unused)) void *dummy)
 500 {
 501         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 502         unsigned lcore_id;
 503         uint64_t prev_tsc, diff_tsc, cur_tsc;
 504         int i, j, nb_rx;
 505         uint8_t portid, queueid;
 506         struct lcore_conf *qconf;
 507         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 508
 509         prev_tsc = 0;
 510
 511         lcore_id = rte_lcore_id();
 512         qconf = &lcore_conf[lcore_id];
 513
 514         if (qconf->n_rx_queue == 0) {
 515                 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
 516                 return 0;
 517         }
 518
 519         RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
 520
 521         for (i = 0; i < qconf->n_rx_queue; i++) {
 522
 523                 portid = qconf->rx_queue_list[i].port_id;
 524                 queueid = qconf->rx_queue_list[i].queue_id;
 525                 RTE_LOG(INFO, L3FWD, " -- lcoreid=%u portid=%hhu rxqueueid=%hhu\n", lcore_id,
 526                         portid, queueid);
 527         }
 528
 529         while (1) {
 530
 531                 cur_tsc = rte_rdtsc();
 532
 533                 /*
 534                  * TX burst queue drain
 535                  */
 536                 diff_tsc = cur_tsc - prev_tsc;
 537                 if (unlikely(diff_tsc > drain_tsc)) {
 538
 539                         /*
 540                          * This could be optimized (use queueid instead of
 541                          * portid), but it is not called so often
 542                          */
 543                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 544                                 if (qconf->tx_mbufs[portid].len == 0)
 545                                         continue;
 546                                 send_burst(&lcore_conf[lcore_id],
 547                                         qconf->tx_mbufs[portid].len,
 548                                         portid);
 549                                 qconf->tx_mbufs[portid].len = 0;
 550                         }
 551
 552                         prev_tsc = cur_tsc;
 553                 }
 554
 555                 /*
 556                  * Read packet from RX queues
 557                  */
 558                 for (i = 0; i < qconf->n_rx_queue; ++i) {
 559
 560                         portid = qconf->rx_queue_list[i].port_id;
 561                         queueid = qconf->rx_queue_list[i].queue_id;
 562                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, MAX_PKT_BURST);
 563
 564                         /* Prefetch first packets */
 565                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 566                                 rte_prefetch0(rte_pktmbuf_mtod(
 567                                                 pkts_burst[j], void *));
 568                         }
 569
 570                         /* Prefetch and forward already prefetched packets */
 571                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 572                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 573                                                 j + PREFETCH_OFFSET], void *));
 574                                 l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct);
 575                         }
 576
 577                         /* Forward remaining prefetched packets */
 578                         for (; j < nb_rx; j++) {
 579                                 l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct);
 580                         }
 581                 }
 582         }
 583 }
 584
 585 static int
 586 check_lcore_params(void)
 587 {
 588         uint8_t queue, lcore;
 589         uint16_t i;
 590         int socketid;
 591
 592         for (i = 0; i < nb_lcore_params; ++i) {
 593                 queue = lcore_params[i].queue_id;
 594                 if (queue >= MAX_RX_QUEUE_PER_PORT) {
 595                         printf("invalid queue number: %hhu\n", queue);
 596                         return -1;
 597                 }
 598                 lcore = lcore_params[i].lcore_id;
 599                 if (!rte_lcore_is_enabled(lcore)) {
 600                         printf("error: lcore %hhu is not enabled in lcore mask\n", lcore);
 601                         return -1;
 602                 }
 603                 if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
 604                         (numa_on == 0)) {
 605                         printf("warning: lcore %hhu is on socket %d with numa off \n",
 606                                 lcore, socketid);
 607                 }
 608         }
 609         return 0;
 610 }
 611
 612 static int
 613 check_port_config(const unsigned nb_ports)
 614 {
 615         unsigned portid;
 616         uint16_t i;
 617
 618         for (i = 0; i < nb_lcore_params; ++i) {
 619                 portid = lcore_params[i].port_id;
 620                 if ((enabled_port_mask & (1 << portid)) == 0) {
 621                         printf("port %u is not enabled in port mask\n", portid);
 622                         return -1;
 623                 }
 624                 if (portid >= nb_ports) {
 625                         printf("port %u is not present on the board\n", portid);
 626                         return -1;
 627                 }
 628         }
 629         return 0;
 630 }
 631
 632 static uint8_t
 633 get_port_n_rx_queues(const uint8_t port)
 634 {
 635         int queue = -1;
 636         uint16_t i;
 637
 638         for (i = 0; i < nb_lcore_params; ++i) {
 639                 if (lcore_params[i].port_id == port && lcore_params[i].queue_id > queue)
 640                         queue = lcore_params[i].queue_id;
 641         }
 642         return (uint8_t)(++queue);
 643 }
 644
 645 static int
 646 init_lcore_rx_queues(void)
 647 {
 648         uint16_t i, nb_rx_queue;
 649         uint8_t lcore;
 650
 651         for (i = 0; i < nb_lcore_params; ++i) {
 652                 lcore = lcore_params[i].lcore_id;
 653                 nb_rx_queue = lcore_conf[lcore].n_rx_queue;
 654                 if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) {
 655                         printf("error: too many queues (%u) for lcore: %u\n",
 656                                 (unsigned)nb_rx_queue + 1, (unsigned)lcore);
 657                         return -1;
 658                 } else {
 659                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id =
 660                                 lcore_params[i].port_id;
 661                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id =
 662                                 lcore_params[i].queue_id;
 663                         lcore_conf[lcore].n_rx_queue++;
 664                 }
 665         }
 666         return 0;
 667 }
 668
 669 /* display usage */
 670 static void
 671 print_usage(const char *prgname)
 672 {
 673         printf ("%s [EAL options] -- -p PORTMASK"
 674                 "  [--config (port,queue,lcore)[,(port,queue,lcore]]\n"
 675                 "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 676                 "  --config (port,queue,lcore): rx queues configuration\n"
 677                 "  --no-numa: optional, disable numa awareness\n",
 678                 prgname);
 679 }
 680
 681 /* Custom handling of signals to handle process terminal */
 682 static void
 683 signal_handler(int signum)
 684 {
 685         uint8_t portid;
 686         uint8_t nb_ports = rte_eth_dev_count();
 687
 688         /* When we receive a SIGINT signal */
 689         if (signum == SIGINT) {
 690                 for (portid = 0; portid < nb_ports; portid++) {
 691                         /* skip ports that are not enabled */
 692                         if ((enabled_port_mask & (1 << portid)) == 0)
 693                                 continue;
 694                         rte_eth_dev_close(portid);
 695                 }
 696         }
 697         rte_exit(EXIT_SUCCESS, "\n User forced exit\n");
 698 }
 699 static int
 700 parse_portmask(const char *portmask)
 701 {
 702         char *end = NULL;
 703         unsigned long pm;
 704
 705         /* parse hexadecimal string */
 706         pm = strtoul(portmask, &end, 16);
 707         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 708                 return -1;
 709
 710         if (pm == 0)
 711                 return -1;
 712
 713         return pm;
 714 }
 715
 716 static int
 717 parse_config(const char *q_arg)
 718 {
 719         char s[256];
 720         const char *p, *p0 = q_arg;
 721         char *end;
 722         enum fieldnames {
 723                 FLD_PORT = 0,
 724                 FLD_QUEUE,
 725                 FLD_LCORE,
 726                 _NUM_FLD
 727         };
 728         unsigned long int_fld[_NUM_FLD];
 729         char *str_fld[_NUM_FLD];
 730         int i;
 731         unsigned size;
 732
 733         nb_lcore_params = 0;
 734
 735         while ((p = strchr(p0,'(')) != NULL) {
 736                 ++p;
 737                 if((p0 = strchr(p,')')) == NULL)
 738                         return -1;
 739
 740                 size = p0 - p;
 741                 if(size >= sizeof(s))
 742                         return -1;
 743
 744                 rte_snprintf(s, sizeof(s), "%.*s", size, p);
 745                 if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD)
 746                         return -1;
 747                 for (i = 0; i < _NUM_FLD; i++){
 748                         errno = 0;
 749                         int_fld[i] = strtoul(str_fld[i], &end, 0);
 750                         if (errno != 0 || end == str_fld[i] || int_fld[i] > 255)
 751                                 return -1;
 752                 }
 753                 if (nb_lcore_params >= MAX_LCORE_PARAMS) {
 754                         printf("exceeded max number of lcore params: %hu\n",
 755                                 nb_lcore_params);
 756                         return -1;
 757                 }
 758                 lcore_params_array[nb_lcore_params].port_id = (uint8_t)int_fld[FLD_PORT];
 759                 lcore_params_array[nb_lcore_params].queue_id = (uint8_t)int_fld[FLD_QUEUE];
 760                 lcore_params_array[nb_lcore_params].lcore_id = (uint8_t)int_fld[FLD_LCORE];
 761                 ++nb_lcore_params;
 762         }
 763         lcore_params = lcore_params_array;
 764         return 0;
 765 }
 766
 767 /* Parse the argument given in the command line of the application */
 768 static int
 769 parse_args(int argc, char **argv)
 770 {
 771         int opt, ret;
 772         char **argvopt;
 773         int option_index;
 774         char *prgname = argv[0];
 775         static struct option lgopts[] = {
 776                 {"config", 1, 0, 0},
 777                 {"no-numa", 0, 0, 0},
 778                 {NULL, 0, 0, 0}
 779         };
 780
 781         argvopt = argv;
 782
 783         while ((opt = getopt_long(argc, argvopt, "p:",
 784                                 lgopts, &option_index)) != EOF) {
 785
 786                 switch (opt) {
 787                 /* portmask */
 788                 case 'p':
 789                         enabled_port_mask = parse_portmask(optarg);
 790                         if (enabled_port_mask == 0) {
 791                                 printf("invalid portmask\n");
 792                                 print_usage(prgname);
 793                                 return -1;
 794                         }
 795                         break;
 796
 797                 /* long options */
 798                 case 0:
 799                         if (!strcmp(lgopts[option_index].name, "config")) {
 800                                 ret = parse_config(optarg);
 801                                 if (ret) {
 802                                         printf("invalid config\n");
 803                                         print_usage(prgname);
 804                                         return -1;
 805                                 }
 806                         }
 807
 808                         if (!strcmp(lgopts[option_index].name, "no-numa")) {
 809                                 printf("numa is disabled \n");
 810                                 numa_on = 0;
 811                         }
 812                         break;
 813
 814                 default:
 815                         print_usage(prgname);
 816                         return -1;
 817                 }
 818         }
 819
 820         if (optind >= 0)
 821                 argv[optind-1] = prgname;
 822
 823         ret = optind-1;
 824         optind = 0; /* reset getopt lib */
 825         return ret;
 826 }
 827
 828 static void
 829 print_ethaddr(const char *name, const struct ether_addr *eth_addr)
 830 {
 831         printf ("%s%02X:%02X:%02X:%02X:%02X:%02X", name,
 832                 eth_addr->addr_bytes[0],
 833                 eth_addr->addr_bytes[1],
 834                 eth_addr->addr_bytes[2],
 835                 eth_addr->addr_bytes[3],
 836                 eth_addr->addr_bytes[4],
 837                 eth_addr->addr_bytes[5]);
 838 }
 839
 840 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 841 static void
 842 setup_hash(int socketid)
 843 {
 844         unsigned i;
 845         int ret;
 846         char s[64];
 847
 848         /* create  hashes */
 849         rte_snprintf(s, sizeof(s), "l3fwd_hash_%d", socketid);
 850         l3fwd_hash_params.name = s;
 851         l3fwd_hash_params.socket_id = socketid;
 852         l3fwd_lookup_struct[socketid] = rte_hash_create(&l3fwd_hash_params);
 853         if (l3fwd_lookup_struct[socketid] == NULL)
 854                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
 855                                 "socket %d\n", socketid);
 856
 857         /* populate the hash */
 858         for (i = 0; i < L3FWD_NUM_ROUTES; i++) {
 859                 ret = rte_hash_add_key (l3fwd_lookup_struct[socketid],
 860                                 (void *) &l3fwd_route_array[i].key);
 861                 if (ret < 0) {
 862                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
 863                                 "l3fwd hash on socket %d\n", i, socketid);
 864                 }
 865                 l3fwd_out_if[ret] = l3fwd_route_array[i].if_out;
 866                 printf("Hash: Adding key\n");
 867                 print_key(l3fwd_route_array[i].key);
 868         }
 869 }
 870 #endif
 871
 872 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 873 static void
 874 setup_lpm(int socketid)
 875 {
 876         unsigned i;
 877         int ret;
 878         char s[64];
 879
 880         /* create the LPM table */
 881         rte_snprintf(s, sizeof(s), "L3FWD_LPM_%d", socketid);
 882         l3fwd_lookup_struct[socketid] = rte_lpm_create(s, socketid,
 883                                 L3FWD_LPM_MAX_RULES, 0);
 884         if (l3fwd_lookup_struct[socketid] == NULL)
 885                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
 886                                 " on socket %d\n", socketid);
 887
 888         /* populate the LPM table */
 889         for (i = 0; i < L3FWD_NUM_ROUTES; i++) {
 890                 ret = rte_lpm_add(l3fwd_lookup_struct[socketid],
 891                         l3fwd_route_array[i].ip,
 892                         l3fwd_route_array[i].depth,
 893                         l3fwd_route_array[i].if_out);
 894
 895                 if (ret < 0) {
 896                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the "
 897                                 "l3fwd LPM table on socket %d\n",
 898                                 i, socketid);
 899                 }
 900
 901                 printf("LPM: Adding route 0x%08x / %d (%d)\n",
 902                         (unsigned)l3fwd_route_array[i].ip,
 903                         l3fwd_route_array[i].depth,
 904                         l3fwd_route_array[i].if_out);
 905         }
 906 }
 907 #endif
 908
 909 static int
 910 init_mem(void)
 911 {
 912         struct lcore_conf *qconf;
 913         int socketid;
 914         unsigned lcore_id;
 915         char s[64];
 916
 917         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 918                 if (rte_lcore_is_enabled(lcore_id) == 0)
 919                         continue;
 920
 921                 if (numa_on)
 922                         socketid = rte_lcore_to_socket_id(lcore_id);
 923                 else
 924                         socketid = 0;
 925
 926                 if (socketid >= NB_SOCKETS) {
 927                         rte_exit(EXIT_FAILURE, "Socket %d of lcore %u is out of range %d\n",
 928                                 socketid, lcore_id, NB_SOCKETS);
 929                 }
 930                 if (pktmbuf_pool[socketid] == NULL) {
 931                         rte_snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
 932                         pktmbuf_pool[socketid] =
 933                                 rte_mempool_create(s, NB_MBUF, MBUF_SIZE, 32,
 934                                         sizeof(struct rte_pktmbuf_pool_private),
 935                                         rte_pktmbuf_pool_init, NULL,
 936                                         rte_pktmbuf_init, NULL,
 937                                         socketid, 0);
 938                         if (pktmbuf_pool[socketid] == NULL)
 939                                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool on socket %d\n", socketid);
 940                         else
 941                                 printf("Allocated mbuf pool on socket %d\n", socketid);
 942
 943 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 944                         setup_lpm(socketid);
 945 #else
 946                         setup_hash(socketid);
 947 #endif
 948                 }
 949                 qconf = &lcore_conf[lcore_id];
 950                 qconf->lookup_struct = l3fwd_lookup_struct[socketid];
 951         }
 952         return 0;
 953 }
 954
 955 int
 956 MAIN(int argc, char **argv)
 957 {
 958         struct lcore_conf *qconf;
 959         int ret;
 960         unsigned nb_ports;
 961         uint16_t queueid;
 962         unsigned lcore_id;
 963         uint8_t portid, nb_rx_queue, queue, socketid;
 964
 965         signal(SIGINT, signal_handler);
 966         /* init EAL */
 967         ret = rte_eal_init(argc, argv);
 968         if (ret < 0)
 969                 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
 970         argc -= ret;
 971         argv += ret;
 972
 973         /* parse application arguments (after the EAL ones) */
 974         ret = parse_args(argc, argv);
 975         if (ret < 0)
 976                 rte_exit(EXIT_FAILURE, "Invalid L3FWD-VF parameters\n");
 977
 978         if (check_lcore_params() < 0)
 979                 rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");
 980
 981         ret = init_lcore_rx_queues();
 982         if (ret < 0)
 983                 rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");
 984
 985         ret = init_mem();
 986         if (ret < 0)
 987                 rte_exit(EXIT_FAILURE, "init_mem failed\n");
 988
 989         /* init driver */
 990         if (rte_pmd_init_all() < 0)
 991                 rte_exit(EXIT_FAILURE, "Cannot init pmd\n");
 992
 993         if (rte_eal_pci_probe() < 0)
 994                 rte_exit(EXIT_FAILURE, "Cannot probe PCI\n");
 995
 996         nb_ports = rte_eth_dev_count();
 997         if (nb_ports > RTE_MAX_ETHPORTS)
 998                 nb_ports = RTE_MAX_ETHPORTS;
 999
1000         if (check_port_config(nb_ports) < 0)
1001                 rte_exit(EXIT_FAILURE, "check_port_config failed\n");
1002
1003         /* initialize all ports */
1004         for (portid = 0; portid < nb_ports; portid++) {
1005                 /* skip ports that are not enabled */
1006                 if ((enabled_port_mask & (1 << portid)) == 0) {
1007                         printf("\nSkipping disabled port %d\n", portid);
1008                         continue;
1009                 }
1010
1011                 /* init port */
1012                 printf("Initializing port %d ... ", portid );
1013                 fflush(stdout);
1014
1015                 /* must always equal(=1) */
1016                 nb_rx_queue = get_port_n_rx_queues(portid);
1017
1018                 printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
1019                         nb_rx_queue, (unsigned)1 );
1020                 ret = rte_eth_dev_configure(portid, nb_rx_queue, 1, &port_conf);
1021                 if (ret < 0)
1022                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%d\n",
1023                                 ret, portid);
1024
1025                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
1026                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
1027                 printf(", ");
1028
1029                 /* init one TX queue */
1030                 socketid = 0;
1031
1032                 printf("txq=%d,%d ", 0, socketid);
1033                 fflush(stdout);
1034                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
1035                                                  socketid, &tx_conf);
1036                 if (ret < 0)
1037                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
1038                                 "port=%d\n", ret, portid);
1039
1040                 printf("\n");
1041         }
1042
1043         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1044                 if (rte_lcore_is_enabled(lcore_id) == 0)
1045                         continue;
1046                 qconf = &lcore_conf[lcore_id];
1047                 qconf->tx_queue_id = 0;
1048
1049                 printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
1050                 fflush(stdout);
1051                 /* init RX queues */
1052                 for(queue = 0; queue < qconf->n_rx_queue; ++queue) {
1053                         portid = qconf->rx_queue_list[queue].port_id;
1054                         queueid = qconf->rx_queue_list[queue].queue_id;
1055
1056                         if (numa_on)
1057                                 socketid = (uint8_t)rte_lcore_to_socket_id(lcore_id);
1058                         else
1059                                 socketid = 0;
1060
1061                         printf("rxq=%d,%d,%d ", portid, queueid, socketid);
1062                         fflush(stdout);
1063
1064                         ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
1065                                                 socketid, &rx_conf, pktmbuf_pool[socketid]);
1066                         if (ret < 0)
1067                                 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d,"
1068                                                 "port=%d\n", ret, portid);
1069                 }
1070         }
1071         printf("\n");
1072
1073         /* start ports */
1074         for (portid = 0; portid < nb_ports; portid++) {
1075                 if ((enabled_port_mask & (1 << portid)) == 0) {
1076                         continue;
1077                 }
1078                 /* Start device */
1079                 ret = rte_eth_dev_start(portid);
1080                 if (ret < 0)
1081                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
1082                                 ret, portid);
1083
1084                 printf("done: Port %d\n", portid);
1085
1086         }
1087
1088         /* launch per-lcore init on every lcore */
1089         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1090         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1091                 if (rte_eal_wait_lcore(lcore_id) < 0)
1092                         return -1;
1093         }
1094
1095         return 0;
1096 }