examples/l3fwd-vf/main.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 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_eal.h>
  53 #include <rte_per_lcore.h>
  54 #include <rte_launch.h>
  55 #include <rte_atomic.h>
  56 #include <rte_spinlock.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_mempool.h>
  69 #include <rte_mbuf.h>
  70 #include <rte_ip.h>
  71 #include <rte_tcp.h>
  72 #include <rte_udp.h>
  73 #include <rte_string_fns.h>
  74
  75 #define APP_LOOKUP_EXACT_MATCH          0
  76 #define APP_LOOKUP_LPM                  1
  77 #define DO_RFC_1812_CHECKS
  78
  79 //#define APP_LOOKUP_METHOD             APP_LOOKUP_EXACT_MATCH
  80 #ifndef APP_LOOKUP_METHOD
  81 #define APP_LOOKUP_METHOD             APP_LOOKUP_LPM
  82 #endif
  83
  84 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
  85 #include <rte_hash.h>
  86 #elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
  87 #include <rte_lpm.h>
  88 #else
  89 #error "APP_LOOKUP_METHOD set to incorrect value"
  90 #endif
  91
  92 #define RTE_LOGTYPE_L3FWD RTE_LOGTYPE_USER1
  93
  94 #define MEMPOOL_CACHE_SIZE 256
  95
  96 /*
  97  * This expression is used to calculate the number of mbufs needed depending on user input, taking
  98  *  into account memory for rx and tx hardware rings, cache per lcore and mtable per port per lcore.
  99  *  RTE_MAX is used to ensure that NB_MBUF never goes below a minimum value of 8192
 100  */
 101
 102 #define NB_MBUF RTE_MAX (                                                                                                                                       \
 103                                 (nb_ports*nb_rx_queue*RTE_TEST_RX_DESC_DEFAULT +                                                        \
 104                                 nb_ports*nb_lcores*MAX_PKT_BURST +                                                                                      \
 105                                 nb_ports*n_tx_queue*RTE_TEST_TX_DESC_DEFAULT +                                                          \
 106                                 nb_lcores*MEMPOOL_CACHE_SIZE),                                                                                          \
 107                                 (unsigned)8192)
 108
 109 /*
 110  * RX and TX Prefetch, Host, and Write-back threshold values should be
 111  * carefully set for optimal performance. Consult the network
 112  * controller's datasheet and supporting DPDK documentation for guidance
 113  * on how these parameters should be set.
 114  */
 115 #define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
 116 #define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
 117 #define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
 118
 119 /*
 120  * These default values are optimized for use with the Intel(R) 82599 10 GbE
 121  * Controller and the DPDK ixgbe PMD. Consider using other values for other
 122  * network controllers and/or network drivers.
 123  */
 124 #define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
 125 #define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
 126 #define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
 127
 128 #define MAX_PKT_BURST 32
 129 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 130
 131 #define NB_SOCKETS 8
 132
 133 #define SOCKET0 0
 134
 135 /* Configure how many packets ahead to prefetch, when reading packets */
 136 #define PREFETCH_OFFSET 3
 137
 138 /*
 139  * Configurable number of RX/TX ring descriptors
 140  */
 141 #define RTE_TEST_RX_DESC_DEFAULT 128
 142 #define RTE_TEST_TX_DESC_DEFAULT 512
 143 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
 144 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
 145
 146 /* ethernet addresses of ports */
 147 static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
 148
 149 /* mask of enabled ports */
 150 static uint32_t enabled_port_mask = 0;
 151 static int numa_on = 1; /**< NUMA is enabled by default. */
 152
 153 struct mbuf_table {
 154         uint16_t len;
 155         struct rte_mbuf *m_table[MAX_PKT_BURST];
 156 };
 157
 158 struct lcore_rx_queue {
 159         uint8_t port_id;
 160         uint8_t queue_id;
 161 } __rte_cache_aligned;
 162
 163 #define MAX_RX_QUEUE_PER_LCORE 16
 164 #define MAX_TX_QUEUE_PER_PORT 1
 165 #define MAX_RX_QUEUE_PER_PORT 1
 166
 167 #define MAX_LCORE_PARAMS 1024
 168 struct lcore_params {
 169         uint8_t port_id;
 170         uint8_t queue_id;
 171         uint8_t lcore_id;
 172 } __rte_cache_aligned;
 173
 174 static struct lcore_params lcore_params_array[MAX_LCORE_PARAMS];
 175 static struct lcore_params lcore_params_array_default[] = {
 176         {0, 0, 2},
 177         {0, 1, 2},
 178         {0, 2, 2},
 179         {1, 0, 2},
 180         {1, 1, 2},
 181         {1, 2, 2},
 182         {2, 0, 2},
 183         {3, 0, 3},
 184         {3, 1, 3},
 185 };
 186
 187 static struct lcore_params * lcore_params = lcore_params_array_default;
 188 static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
 189                                 sizeof(lcore_params_array_default[0]);
 190
 191 static struct rte_eth_conf port_conf = {
 192         .rxmode = {
 193                 .mq_mode        = ETH_MQ_RX_RSS,
 194                 .max_rx_pkt_len = ETHER_MAX_LEN,
 195                 .split_hdr_size = 0,
 196                 .header_split   = 0, /**< Header Split disabled */
 197                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
 198                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 199                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 200                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
 201         },
 202         .rx_adv_conf = {
 203                 .rss_conf = {
 204                         .rss_key = NULL,
 205                         .rss_hf = ETH_RSS_IP,
 206                 },
 207         },
 208         .txmode = {
 209                 .mq_mode = ETH_MQ_TX_NONE,
 210         },
 211 };
 212
 213 static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 214
 215
 216 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 217
 218 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
 219 #include <rte_hash_crc.h>
 220 #define DEFAULT_HASH_FUNC       rte_hash_crc
 221 #else
 222 #include <rte_jhash.h>
 223 #define DEFAULT_HASH_FUNC       rte_jhash
 224 #endif
 225
 226 struct ipv4_5tuple {
 227         uint32_t ip_dst;
 228         uint32_t ip_src;
 229         uint16_t port_dst;
 230         uint16_t port_src;
 231         uint8_t proto;
 232 } __attribute__((__packed__));
 233
 234 struct l3fwd_route {
 235         struct ipv4_5tuple key;
 236         uint8_t if_out;
 237 };
 238
 239 static struct l3fwd_route l3fwd_route_array[] = {
 240         {{IPv4(100,10,0,1), IPv4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0},
 241         {{IPv4(100,20,0,2), IPv4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1},
 242         {{IPv4(100,30,0,3), IPv4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2},
 243         {{IPv4(100,40,0,4), IPv4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3},
 244 };
 245
 246 typedef struct rte_hash lookup_struct_t;
 247 static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS];
 248
 249 #define L3FWD_HASH_ENTRIES      1024
 250 struct rte_hash_parameters l3fwd_hash_params = {
 251         .name = "l3fwd_hash_0",
 252         .entries = L3FWD_HASH_ENTRIES,
 253         .key_len = sizeof(struct ipv4_5tuple),
 254         .hash_func = DEFAULT_HASH_FUNC,
 255         .hash_func_init_val = 0,
 256         .socket_id = SOCKET0,
 257 };
 258
 259 #define L3FWD_NUM_ROUTES \
 260         (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))
 261
 262 static uint8_t l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 263 #endif
 264
 265 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 266 struct l3fwd_route {
 267         uint32_t ip;
 268         uint8_t  depth;
 269         uint8_t  if_out;
 270 };
 271
 272 static struct l3fwd_route l3fwd_route_array[] = {
 273         {IPv4(1,1,1,0), 24, 0},
 274         {IPv4(2,1,1,0), 24, 1},
 275         {IPv4(3,1,1,0), 24, 2},
 276         {IPv4(4,1,1,0), 24, 3},
 277         {IPv4(5,1,1,0), 24, 4},
 278         {IPv4(6,1,1,0), 24, 5},
 279         {IPv4(7,1,1,0), 24, 6},
 280         {IPv4(8,1,1,0), 24, 7},
 281 };
 282
 283 #define L3FWD_NUM_ROUTES \
 284         (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))
 285
 286 #define L3FWD_LPM_MAX_RULES     1024
 287
 288 typedef struct rte_lpm lookup_struct_t;
 289 static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS];
 290 #endif
 291
 292 struct lcore_conf {
 293         uint16_t n_rx_queue;
 294         struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 295         uint16_t tx_queue_id;
 296         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 297         lookup_struct_t * lookup_struct;
 298 } __rte_cache_aligned;
 299
 300 static struct lcore_conf lcore_conf[RTE_MAX_LCORE];
 301 static rte_spinlock_t spinlock_conf[RTE_MAX_ETHPORTS] = {RTE_SPINLOCK_INITIALIZER};
 302 /* Send burst of packets on an output interface */
 303 static inline int
 304 send_burst(struct lcore_conf *qconf, uint16_t n, uint8_t port)
 305 {
 306         struct rte_mbuf **m_table;
 307         int ret;
 308         uint16_t queueid;
 309
 310         queueid = qconf->tx_queue_id;
 311         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 312
 313         rte_spinlock_lock(&spinlock_conf[port]);
 314         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 315         rte_spinlock_unlock(&spinlock_conf[port]);
 316
 317         if (unlikely(ret < n)) {
 318                 do {
 319                         rte_pktmbuf_free(m_table[ret]);
 320                 } while (++ret < n);
 321         }
 322
 323         return 0;
 324 }
 325
 326 /* Enqueue a single packet, and send burst if queue is filled */
 327 static inline int
 328 send_single_packet(struct rte_mbuf *m, uint8_t port)
 329 {
 330         uint32_t lcore_id;
 331         uint16_t len;
 332         struct lcore_conf *qconf;
 333
 334         lcore_id = rte_lcore_id();
 335
 336         qconf = &lcore_conf[lcore_id];
 337         len = qconf->tx_mbufs[port].len;
 338         qconf->tx_mbufs[port].m_table[len] = m;
 339         len++;
 340
 341         /* enough pkts to be sent */
 342         if (unlikely(len == MAX_PKT_BURST)) {
 343                 send_burst(qconf, MAX_PKT_BURST, port);
 344                 len = 0;
 345         }
 346
 347         qconf->tx_mbufs[port].len = len;
 348         return 0;
 349 }
 350
 351 #ifdef DO_RFC_1812_CHECKS
 352 static inline int
 353 is_valid_ipv4_pkt(struct ipv4_hdr *pkt, uint32_t link_len)
 354 {
 355         /* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */
 356         /*
 357          * 1. The packet length reported by the Link Layer must be large
 358          * enough to hold the minimum length legal IP datagram (20 bytes).
 359          */
 360         if (link_len < sizeof(struct ipv4_hdr))
 361                 return -1;
 362
 363         /* 2. The IP checksum must be correct. */
 364         /* this is checked in H/W */
 365
 366         /*
 367          * 3. The IP version number must be 4. If the version number is not 4
 368          * then the packet may be another version of IP, such as IPng or
 369          * ST-II.
 370          */
 371         if (((pkt->version_ihl) >> 4) != 4)
 372                 return -3;
 373         /*
 374          * 4. The IP header length field must be large enough to hold the
 375          * minimum length legal IP datagram (20 bytes = 5 words).
 376          */
 377         if ((pkt->version_ihl & 0xf) < 5)
 378                 return -4;
 379
 380         /*
 381          * 5. The IP total length field must be large enough to hold the IP
 382          * datagram header, whose length is specified in the IP header length
 383          * field.
 384          */
 385         if (rte_cpu_to_be_16(pkt->total_length) < sizeof(struct ipv4_hdr))
 386                 return -5;
 387
 388         return 0;
 389 }
 390 #endif
 391
 392 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 393 static void
 394 print_key(struct ipv4_5tuple key)
 395 {
 396         printf("IP dst = %08x, IP src = %08x, port dst = %d, port src = %d, proto = %d\n",
 397                (unsigned)key.ip_dst, (unsigned)key.ip_src, key.port_dst, key.port_src, key.proto);
 398 }
 399
 400 static inline uint8_t
 401 get_dst_port(struct ipv4_hdr *ipv4_hdr,  uint8_t portid, lookup_struct_t * l3fwd_lookup_struct)
 402 {
 403         struct ipv4_5tuple key;
 404         struct tcp_hdr *tcp;
 405         struct udp_hdr *udp;
 406         int ret = 0;
 407
 408         key.ip_dst = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
 409         key.ip_src = rte_be_to_cpu_32(ipv4_hdr->src_addr);
 410         key.proto = ipv4_hdr->next_proto_id;
 411
 412         switch (ipv4_hdr->next_proto_id) {
 413         case IPPROTO_TCP:
 414                 tcp = (struct tcp_hdr *)((unsigned char *) ipv4_hdr +
 415                                         sizeof(struct ipv4_hdr));
 416                 key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
 417                 key.port_src = rte_be_to_cpu_16(tcp->src_port);
 418                 break;
 419
 420         case IPPROTO_UDP:
 421                 udp = (struct udp_hdr *)((unsigned char *) ipv4_hdr +
 422                                         sizeof(struct ipv4_hdr));
 423                 key.port_dst = rte_be_to_cpu_16(udp->dst_port);
 424                 key.port_src = rte_be_to_cpu_16(udp->src_port);
 425                 break;
 426
 427         default:
 428                 key.port_dst = 0;
 429                 key.port_src = 0;
 430         }
 431
 432         /* Find destination port */
 433         ret = rte_hash_lookup(l3fwd_lookup_struct, (const void *)&key);
 434         return (uint8_t)((ret < 0)? portid : l3fwd_out_if[ret]);
 435 }
 436 #endif
 437
 438 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 439 static inline uint8_t
 440 get_dst_port(struct ipv4_hdr *ipv4_hdr,  uint8_t portid, lookup_struct_t * l3fwd_lookup_struct)
 441 {
 442         uint32_t next_hop;
 443
 444         return (uint8_t) ((rte_lpm_lookup(l3fwd_lookup_struct,
 445                         rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0)?
 446                         next_hop : portid);
 447 }
 448 #endif
 449
 450 static inline void
 451 l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, lookup_struct_t * l3fwd_lookup_struct)
 452 {
 453         struct ether_hdr *eth_hdr;
 454         struct ipv4_hdr *ipv4_hdr;
 455         void *tmp;
 456         uint8_t dst_port;
 457
 458         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 459
 460         ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
 461                                            sizeof(struct ether_hdr));
 462
 463 #ifdef DO_RFC_1812_CHECKS
 464         /* Check to make sure the packet is valid (RFC1812) */
 465         if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
 466                 rte_pktmbuf_free(m);
 467                 return;
 468         }
 469 #endif
 470
 471         dst_port = get_dst_port(ipv4_hdr, portid, l3fwd_lookup_struct);
 472         if (dst_port >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port) == 0)
 473                 dst_port = portid;
 474
 475         /* 02:00:00:00:00:xx */
 476         tmp = &eth_hdr->d_addr.addr_bytes[0];
 477         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 478
 479 #ifdef DO_RFC_1812_CHECKS
 480         /* Update time to live and header checksum */
 481         --(ipv4_hdr->time_to_live);
 482         ++(ipv4_hdr->hdr_checksum);
 483 #endif
 484
 485         /* src addr */
 486         ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 487
 488         send_single_packet(m, dst_port);
 489
 490 }
 491
 492 /* main processing loop */
 493 static int
 494 main_loop(__attribute__((unused)) void *dummy)
 495 {
 496         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 497         unsigned lcore_id;
 498         uint64_t prev_tsc, diff_tsc, cur_tsc;
 499         int i, j, nb_rx;
 500         uint8_t portid, queueid;
 501         struct lcore_conf *qconf;
 502         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 503
 504         prev_tsc = 0;
 505
 506         lcore_id = rte_lcore_id();
 507         qconf = &lcore_conf[lcore_id];
 508
 509         if (qconf->n_rx_queue == 0) {
 510                 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
 511                 return 0;
 512         }
 513
 514         RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
 515
 516         for (i = 0; i < qconf->n_rx_queue; i++) {
 517
 518                 portid = qconf->rx_queue_list[i].port_id;
 519                 queueid = qconf->rx_queue_list[i].queue_id;
 520                 RTE_LOG(INFO, L3FWD, " -- lcoreid=%u portid=%hhu rxqueueid=%hhu\n", lcore_id,
 521                         portid, queueid);
 522         }
 523
 524         while (1) {
 525
 526                 cur_tsc = rte_rdtsc();
 527
 528                 /*
 529                  * TX burst queue drain
 530                  */
 531                 diff_tsc = cur_tsc - prev_tsc;
 532                 if (unlikely(diff_tsc > drain_tsc)) {
 533
 534                         /*
 535                          * This could be optimized (use queueid instead of
 536                          * portid), but it is not called so often
 537                          */
 538                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 539                                 if (qconf->tx_mbufs[portid].len == 0)
 540                                         continue;
 541                                 send_burst(&lcore_conf[lcore_id],
 542                                         qconf->tx_mbufs[portid].len,
 543                                         portid);
 544                                 qconf->tx_mbufs[portid].len = 0;
 545                         }
 546
 547                         prev_tsc = cur_tsc;
 548                 }
 549
 550                 /*
 551                  * Read packet from RX queues
 552                  */
 553                 for (i = 0; i < qconf->n_rx_queue; ++i) {
 554
 555                         portid = qconf->rx_queue_list[i].port_id;
 556                         queueid = qconf->rx_queue_list[i].queue_id;
 557                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, MAX_PKT_BURST);
 558
 559                         /* Prefetch first packets */
 560                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 561                                 rte_prefetch0(rte_pktmbuf_mtod(
 562                                                 pkts_burst[j], void *));
 563                         }
 564
 565                         /* Prefetch and forward already prefetched packets */
 566                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 567                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 568                                                 j + PREFETCH_OFFSET], void *));
 569                                 l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct);
 570                         }
 571
 572                         /* Forward remaining prefetched packets */
 573                         for (; j < nb_rx; j++) {
 574                                 l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct);
 575                         }
 576                 }
 577         }
 578 }
 579
 580 static int
 581 check_lcore_params(void)
 582 {
 583         uint8_t queue, lcore;
 584         uint16_t i;
 585         int socketid;
 586
 587         for (i = 0; i < nb_lcore_params; ++i) {
 588                 queue = lcore_params[i].queue_id;
 589                 if (queue >= MAX_RX_QUEUE_PER_PORT) {
 590                         printf("invalid queue number: %hhu\n", queue);
 591                         return -1;
 592                 }
 593                 lcore = lcore_params[i].lcore_id;
 594                 if (!rte_lcore_is_enabled(lcore)) {
 595                         printf("error: lcore %hhu is not enabled in lcore mask\n", lcore);
 596                         return -1;
 597                 }
 598                 if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
 599                         (numa_on == 0)) {
 600                         printf("warning: lcore %hhu is on socket %d with numa off \n",
 601                                 lcore, socketid);
 602                 }
 603         }
 604         return 0;
 605 }
 606
 607 static int
 608 check_port_config(const unsigned nb_ports)
 609 {
 610         unsigned portid;
 611         uint16_t i;
 612
 613         for (i = 0; i < nb_lcore_params; ++i) {
 614                 portid = lcore_params[i].port_id;
 615                 if ((enabled_port_mask & (1 << portid)) == 0) {
 616                         printf("port %u is not enabled in port mask\n", portid);
 617                         return -1;
 618                 }
 619                 if (portid >= nb_ports) {
 620                         printf("port %u is not present on the board\n", portid);
 621                         return -1;
 622                 }
 623         }
 624         return 0;
 625 }
 626
 627 static uint8_t
 628 get_port_n_rx_queues(const uint8_t port)
 629 {
 630         int queue = -1;
 631         uint16_t i;
 632
 633         for (i = 0; i < nb_lcore_params; ++i) {
 634                 if (lcore_params[i].port_id == port && lcore_params[i].queue_id > queue)
 635                         queue = lcore_params[i].queue_id;
 636         }
 637         return (uint8_t)(++queue);
 638 }
 639
 640 static int
 641 init_lcore_rx_queues(void)
 642 {
 643         uint16_t i, nb_rx_queue;
 644         uint8_t lcore;
 645
 646         for (i = 0; i < nb_lcore_params; ++i) {
 647                 lcore = lcore_params[i].lcore_id;
 648                 nb_rx_queue = lcore_conf[lcore].n_rx_queue;
 649                 if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) {
 650                         printf("error: too many queues (%u) for lcore: %u\n",
 651                                 (unsigned)nb_rx_queue + 1, (unsigned)lcore);
 652                         return -1;
 653                 } else {
 654                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id =
 655                                 lcore_params[i].port_id;
 656                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id =
 657                                 lcore_params[i].queue_id;
 658                         lcore_conf[lcore].n_rx_queue++;
 659                 }
 660         }
 661         return 0;
 662 }
 663
 664 /* display usage */
 665 static void
 666 print_usage(const char *prgname)
 667 {
 668         printf ("%s [EAL options] -- -p PORTMASK"
 669                 "  [--config (port,queue,lcore)[,(port,queue,lcore]]\n"
 670                 "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 671                 "  --config (port,queue,lcore): rx queues configuration\n"
 672                 "  --no-numa: optional, disable numa awareness\n",
 673                 prgname);
 674 }
 675
 676 /* Custom handling of signals to handle process terminal */
 677 static void
 678 signal_handler(int signum)
 679 {
 680         uint8_t portid;
 681         uint8_t nb_ports = rte_eth_dev_count();
 682
 683         /* When we receive a SIGINT signal */
 684         if (signum == SIGINT) {
 685                 for (portid = 0; portid < nb_ports; portid++) {
 686                         /* skip ports that are not enabled */
 687                         if ((enabled_port_mask & (1 << portid)) == 0)
 688                                 continue;
 689                         rte_eth_dev_close(portid);
 690                 }
 691         }
 692         rte_exit(EXIT_SUCCESS, "\n User forced exit\n");
 693 }
 694 static int
 695 parse_portmask(const char *portmask)
 696 {
 697         char *end = NULL;
 698         unsigned long pm;
 699
 700         /* parse hexadecimal string */
 701         pm = strtoul(portmask, &end, 16);
 702         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 703                 return -1;
 704
 705         if (pm == 0)
 706                 return -1;
 707
 708         return pm;
 709 }
 710
 711 static int
 712 parse_config(const char *q_arg)
 713 {
 714         char s[256];
 715         const char *p, *p0 = q_arg;
 716         char *end;
 717         enum fieldnames {
 718                 FLD_PORT = 0,
 719                 FLD_QUEUE,
 720                 FLD_LCORE,
 721                 _NUM_FLD
 722         };
 723         unsigned long int_fld[_NUM_FLD];
 724         char *str_fld[_NUM_FLD];
 725         int i;
 726         unsigned size;
 727
 728         nb_lcore_params = 0;
 729
 730         while ((p = strchr(p0,'(')) != NULL) {
 731                 ++p;
 732                 if((p0 = strchr(p,')')) == NULL)
 733                         return -1;
 734
 735                 size = p0 - p;
 736                 if(size >= sizeof(s))
 737                         return -1;
 738
 739                 snprintf(s, sizeof(s), "%.*s", size, p);
 740                 if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD)
 741                         return -1;
 742                 for (i = 0; i < _NUM_FLD; i++){
 743                         errno = 0;
 744                         int_fld[i] = strtoul(str_fld[i], &end, 0);
 745                         if (errno != 0 || end == str_fld[i] || int_fld[i] > 255)
 746                                 return -1;
 747                 }
 748                 if (nb_lcore_params >= MAX_LCORE_PARAMS) {
 749                         printf("exceeded max number of lcore params: %hu\n",
 750                                 nb_lcore_params);
 751                         return -1;
 752                 }
 753                 lcore_params_array[nb_lcore_params].port_id = (uint8_t)int_fld[FLD_PORT];
 754                 lcore_params_array[nb_lcore_params].queue_id = (uint8_t)int_fld[FLD_QUEUE];
 755                 lcore_params_array[nb_lcore_params].lcore_id = (uint8_t)int_fld[FLD_LCORE];
 756                 ++nb_lcore_params;
 757         }
 758         lcore_params = lcore_params_array;
 759         return 0;
 760 }
 761
 762 /* Parse the argument given in the command line of the application */
 763 static int
 764 parse_args(int argc, char **argv)
 765 {
 766         int opt, ret;
 767         char **argvopt;
 768         int option_index;
 769         char *prgname = argv[0];
 770         static struct option lgopts[] = {
 771                 {"config", 1, 0, 0},
 772                 {"no-numa", 0, 0, 0},
 773                 {NULL, 0, 0, 0}
 774         };
 775
 776         argvopt = argv;
 777
 778         while ((opt = getopt_long(argc, argvopt, "p:",
 779                                 lgopts, &option_index)) != EOF) {
 780
 781                 switch (opt) {
 782                 /* portmask */
 783                 case 'p':
 784                         enabled_port_mask = parse_portmask(optarg);
 785                         if (enabled_port_mask == 0) {
 786                                 printf("invalid portmask\n");
 787                                 print_usage(prgname);
 788                                 return -1;
 789                         }
 790                         break;
 791
 792                 /* long options */
 793                 case 0:
 794                         if (!strcmp(lgopts[option_index].name, "config")) {
 795                                 ret = parse_config(optarg);
 796                                 if (ret) {
 797                                         printf("invalid config\n");
 798                                         print_usage(prgname);
 799                                         return -1;
 800                                 }
 801                         }
 802
 803                         if (!strcmp(lgopts[option_index].name, "no-numa")) {
 804                                 printf("numa is disabled \n");
 805                                 numa_on = 0;
 806                         }
 807                         break;
 808
 809                 default:
 810                         print_usage(prgname);
 811                         return -1;
 812                 }
 813         }
 814
 815         if (optind >= 0)
 816                 argv[optind-1] = prgname;
 817
 818         ret = optind-1;
 819         optind = 0; /* reset getopt lib */
 820         return ret;
 821 }
 822
 823 static void
 824 print_ethaddr(const char *name, const struct ether_addr *eth_addr)
 825 {
 826         char buf[ETHER_ADDR_FMT_SIZE];
 827         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
 828         printf("%s%s", name, buf);
 829 }
 830
 831 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 832 static void
 833 setup_hash(int socketid)
 834 {
 835         unsigned i;
 836         int ret;
 837         char s[64];
 838
 839         /* create  hashes */
 840         snprintf(s, sizeof(s), "l3fwd_hash_%d", socketid);
 841         l3fwd_hash_params.name = s;
 842         l3fwd_hash_params.socket_id = socketid;
 843         l3fwd_lookup_struct[socketid] = rte_hash_create(&l3fwd_hash_params);
 844         if (l3fwd_lookup_struct[socketid] == NULL)
 845                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
 846                                 "socket %d\n", socketid);
 847
 848         /* populate the hash */
 849         for (i = 0; i < L3FWD_NUM_ROUTES; i++) {
 850                 ret = rte_hash_add_key (l3fwd_lookup_struct[socketid],
 851                                 (void *) &l3fwd_route_array[i].key);
 852                 if (ret < 0) {
 853                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
 854                                 "l3fwd hash on socket %d\n", i, socketid);
 855                 }
 856                 l3fwd_out_if[ret] = l3fwd_route_array[i].if_out;
 857                 printf("Hash: Adding key\n");
 858                 print_key(l3fwd_route_array[i].key);
 859         }
 860 }
 861 #endif
 862
 863 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 864 static void
 865 setup_lpm(int socketid)
 866 {
 867         unsigned i;
 868         int ret;
 869         char s[64];
 870
 871         struct rte_lpm_config lpm_ipv4_config;
 872
 873         lpm_ipv4_config.max_rules = L3FWD_LPM_MAX_RULES;
 874         lpm_ipv4_config.number_tbl8s = 256;
 875         lpm_ipv4_config.flags = 0;
 876
 877         /* create the LPM table */
 878         snprintf(s, sizeof(s), "L3FWD_LPM_%d", socketid);
 879         l3fwd_lookup_struct[socketid] =
 880                         rte_lpm_create(s, socketid, &lpm_ipv4_config);
 881         if (l3fwd_lookup_struct[socketid] == NULL)
 882                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
 883                                 " on socket %d\n", socketid);
 884
 885         /* populate the LPM table */
 886         for (i = 0; i < L3FWD_NUM_ROUTES; i++) {
 887                 ret = rte_lpm_add(l3fwd_lookup_struct[socketid],
 888                         l3fwd_route_array[i].ip,
 889                         l3fwd_route_array[i].depth,
 890                         l3fwd_route_array[i].if_out);
 891
 892                 if (ret < 0) {
 893                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the "
 894                                 "l3fwd LPM table on socket %d\n",
 895                                 i, socketid);
 896                 }
 897
 898                 printf("LPM: Adding route 0x%08x / %d (%d)\n",
 899                         (unsigned)l3fwd_route_array[i].ip,
 900                         l3fwd_route_array[i].depth,
 901                         l3fwd_route_array[i].if_out);
 902         }
 903 }
 904 #endif
 905
 906 static int
 907 init_mem(unsigned nb_mbuf)
 908 {
 909         struct lcore_conf *qconf;
 910         int socketid;
 911         unsigned lcore_id;
 912         char s[64];
 913
 914         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 915                 if (rte_lcore_is_enabled(lcore_id) == 0)
 916                         continue;
 917
 918                 if (numa_on)
 919                         socketid = rte_lcore_to_socket_id(lcore_id);
 920                 else
 921                         socketid = 0;
 922
 923                 if (socketid >= NB_SOCKETS) {
 924                         rte_exit(EXIT_FAILURE, "Socket %d of lcore %u is out of range %d\n",
 925                                 socketid, lcore_id, NB_SOCKETS);
 926                 }
 927                 if (pktmbuf_pool[socketid] == NULL) {
 928                         snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
 929                         pktmbuf_pool[socketid] = rte_pktmbuf_pool_create(s,
 930                                 nb_mbuf, MEMPOOL_CACHE_SIZE, 0,
 931                                 RTE_MBUF_DEFAULT_BUF_SIZE, socketid);
 932                         if (pktmbuf_pool[socketid] == NULL)
 933                                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool on socket %d\n", socketid);
 934                         else
 935                                 printf("Allocated mbuf pool on socket %d\n", socketid);
 936
 937 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 938                         setup_lpm(socketid);
 939 #else
 940                         setup_hash(socketid);
 941 #endif
 942                 }
 943                 qconf = &lcore_conf[lcore_id];
 944                 qconf->lookup_struct = l3fwd_lookup_struct[socketid];
 945         }
 946         return 0;
 947 }
 948
 949 int
 950 main(int argc, char **argv)
 951 {
 952         struct lcore_conf *qconf;
 953         struct rte_eth_dev_info dev_info;
 954         struct rte_eth_txconf *txconf;
 955         int ret;
 956         unsigned nb_ports;
 957         uint16_t queueid;
 958         unsigned lcore_id;
 959         uint32_t nb_lcores;
 960         uint16_t n_tx_queue;
 961         uint8_t portid, nb_rx_queue, queue, socketid;
 962
 963         signal(SIGINT, signal_handler);
 964         /* init EAL */
 965         ret = rte_eal_init(argc, argv);
 966         if (ret < 0)
 967                 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
 968         argc -= ret;
 969         argv += ret;
 970
 971         /* parse application arguments (after the EAL ones) */
 972         ret = parse_args(argc, argv);
 973         if (ret < 0)
 974                 rte_exit(EXIT_FAILURE, "Invalid L3FWD-VF parameters\n");
 975
 976         if (check_lcore_params() < 0)
 977                 rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");
 978
 979         ret = init_lcore_rx_queues();
 980         if (ret < 0)
 981                 rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");
 982
 983         nb_ports = rte_eth_dev_count();
 984
 985         if (check_port_config(nb_ports) < 0)
 986                 rte_exit(EXIT_FAILURE, "check_port_config failed\n");
 987
 988         nb_lcores = rte_lcore_count();
 989
 990         /* initialize all ports */
 991         for (portid = 0; portid < nb_ports; portid++) {
 992                 /* skip ports that are not enabled */
 993                 if ((enabled_port_mask & (1 << portid)) == 0) {
 994                         printf("\nSkipping disabled port %d\n", portid);
 995                         continue;
 996                 }
 997
 998                 /* init port */
 999                 printf("Initializing port %d ... ", portid );
1000                 fflush(stdout);
1001
1002                 /* must always equal(=1) */
1003                 nb_rx_queue = get_port_n_rx_queues(portid);
1004                 n_tx_queue = MAX_TX_QUEUE_PER_PORT;
1005
1006                 printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
1007                         nb_rx_queue, (unsigned)1 );
1008                 ret = rte_eth_dev_configure(portid, nb_rx_queue, n_tx_queue, &port_conf);
1009                 if (ret < 0)
1010                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%d\n",
1011                                 ret, portid);
1012
1013                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
1014                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
1015                 printf(", ");
1016
1017                 ret = init_mem(NB_MBUF);
1018                 if (ret < 0)
1019                         rte_exit(EXIT_FAILURE, "init_mem failed\n");
1020
1021                 /* init one TX queue */
1022                 socketid = (uint8_t)rte_lcore_to_socket_id(rte_get_master_lcore());
1023
1024                 printf("txq=%d,%d,%d ", portid, 0, socketid);
1025                 fflush(stdout);
1026
1027                 rte_eth_dev_info_get(portid, &dev_info);
1028                 txconf = &dev_info.default_txconf;
1029                 if (port_conf.rxmode.jumbo_frame)
1030                         txconf->txq_flags = 0;
1031                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
1032                                                  socketid, txconf);
1033                 if (ret < 0)
1034                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
1035                                 "port=%d\n", ret, portid);
1036
1037                 printf("\n");
1038         }
1039
1040         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1041                 if (rte_lcore_is_enabled(lcore_id) == 0)
1042                         continue;
1043                 qconf = &lcore_conf[lcore_id];
1044                 qconf->tx_queue_id = 0;
1045
1046                 printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
1047                 fflush(stdout);
1048                 /* init RX queues */
1049                 for(queue = 0; queue < qconf->n_rx_queue; ++queue) {
1050                         portid = qconf->rx_queue_list[queue].port_id;
1051                         queueid = qconf->rx_queue_list[queue].queue_id;
1052
1053                         if (numa_on)
1054                                 socketid = (uint8_t)rte_lcore_to_socket_id(lcore_id);
1055                         else
1056                                 socketid = 0;
1057
1058                         printf("rxq=%d,%d,%d ", portid, queueid, socketid);
1059                         fflush(stdout);
1060
1061                         ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
1062                                                 socketid, NULL,
1063                                                 pktmbuf_pool[socketid]);
1064                         if (ret < 0)
1065                                 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d,"
1066                                                 "port=%d\n", ret, portid);
1067                 }
1068         }
1069         printf("\n");
1070
1071         /* start ports */
1072         for (portid = 0; portid < nb_ports; portid++) {
1073                 if ((enabled_port_mask & (1 << portid)) == 0) {
1074                         continue;
1075                 }
1076                 /* Start device */
1077                 ret = rte_eth_dev_start(portid);
1078                 if (ret < 0)
1079                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
1080                                 ret, portid);
1081
1082                 printf("done: Port %d\n", portid);
1083
1084         }
1085
1086         /* launch per-lcore init on every lcore */
1087         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1088         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1089                 if (rte_eal_wait_lcore(lcore_id) < 0)
1090                         return -1;
1091         }
1092
1093         return 0;
1094 }