examples/l3fwd-vf/main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 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 <signal.h>
  16
  17 #include <rte_common.h>
  18 #include <rte_byteorder.h>
  19 #include <rte_log.h>
  20 #include <rte_memory.h>
  21 #include <rte_memcpy.h>
  22 #include <rte_eal.h>
  23 #include <rte_launch.h>
  24 #include <rte_atomic.h>
  25 #include <rte_spinlock.h>
  26 #include <rte_cycles.h>
  27 #include <rte_prefetch.h>
  28 #include <rte_lcore.h>
  29 #include <rte_per_lcore.h>
  30 #include <rte_branch_prediction.h>
  31 #include <rte_interrupts.h>
  32 #include <rte_random.h>
  33 #include <rte_debug.h>
  34 #include <rte_ether.h>
  35 #include <rte_ethdev.h>
  36 #include <rte_mempool.h>
  37 #include <rte_mbuf.h>
  38 #include <rte_ip.h>
  39 #include <rte_tcp.h>
  40 #include <rte_udp.h>
  41 #include <rte_string_fns.h>
  42
  43 #define APP_LOOKUP_EXACT_MATCH          0
  44 #define APP_LOOKUP_LPM                  1
  45 #define DO_RFC_1812_CHECKS
  46
  47 //#define APP_LOOKUP_METHOD             APP_LOOKUP_EXACT_MATCH
  48 #ifndef APP_LOOKUP_METHOD
  49 #define APP_LOOKUP_METHOD             APP_LOOKUP_LPM
  50 #endif
  51
  52 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
  53 #include <rte_hash.h>
  54 #elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
  55 #include <rte_lpm.h>
  56 #else
  57 #error "APP_LOOKUP_METHOD set to incorrect value"
  58 #endif
  59
  60 #define RTE_LOGTYPE_L3FWD RTE_LOGTYPE_USER1
  61
  62 #define MEMPOOL_CACHE_SIZE 256
  63
  64 /*
  65  * This expression is used to calculate the number of mbufs needed depending on user input, taking
  66  *  into account memory for rx and tx hardware rings, cache per lcore and mtable per port per lcore.
  67  *  RTE_MAX is used to ensure that NB_MBUF never goes below a minimum value of 8192
  68  */
  69
  70 #define NB_MBUF RTE_MAX (                                               \
  71                                 (nb_ports*nb_rx_queue*nb_rxd +          \
  72                                 nb_ports*nb_lcores*MAX_PKT_BURST +      \
  73                                 nb_ports*n_tx_queue*nb_txd +            \
  74                                 nb_lcores*MEMPOOL_CACHE_SIZE),          \
  75                                 (unsigned)8192)
  76
  77 /*
  78  * RX and TX Prefetch, Host, and Write-back threshold values should be
  79  * carefully set for optimal performance. Consult the network
  80  * controller's datasheet and supporting DPDK documentation for guidance
  81  * on how these parameters should be set.
  82  */
  83 #define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
  84 #define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
  85 #define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
  86
  87 /*
  88  * These default values are optimized for use with the Intel(R) 82599 10 GbE
  89  * Controller and the DPDK ixgbe PMD. Consider using other values for other
  90  * network controllers and/or network drivers.
  91  */
  92 #define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
  93 #define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
  94 #define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
  95
  96 #define MAX_PKT_BURST 32
  97 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  98
  99 #define NB_SOCKETS 8
 100
 101 #define SOCKET0 0
 102
 103 /* Configure how many packets ahead to prefetch, when reading packets */
 104 #define PREFETCH_OFFSET 3
 105
 106 /*
 107  * Configurable number of RX/TX ring descriptors
 108  */
 109 #define RTE_TEST_RX_DESC_DEFAULT 1024
 110 #define RTE_TEST_TX_DESC_DEFAULT 1024
 111 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
 112 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
 113
 114 /* ethernet addresses of ports */
 115 static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
 116
 117 /* mask of enabled ports */
 118 static uint32_t enabled_port_mask = 0;
 119 static int numa_on = 1; /**< NUMA is enabled by default. */
 120
 121 struct mbuf_table {
 122         uint16_t len;
 123         struct rte_mbuf *m_table[MAX_PKT_BURST];
 124 };
 125
 126 struct lcore_rx_queue {
 127         uint16_t port_id;
 128         uint8_t queue_id;
 129 } __rte_cache_aligned;
 130
 131 #define MAX_RX_QUEUE_PER_LCORE 16
 132 #define MAX_TX_QUEUE_PER_PORT 1
 133 #define MAX_RX_QUEUE_PER_PORT 1
 134
 135 #define MAX_LCORE_PARAMS 1024
 136 struct lcore_params {
 137         uint16_t port_id;
 138         uint8_t queue_id;
 139         uint8_t lcore_id;
 140 } __rte_cache_aligned;
 141
 142 static struct lcore_params lcore_params_array[MAX_LCORE_PARAMS];
 143 static struct lcore_params lcore_params_array_default[] = {
 144         {0, 0, 2},
 145         {0, 1, 2},
 146         {0, 2, 2},
 147         {1, 0, 2},
 148         {1, 1, 2},
 149         {1, 2, 2},
 150         {2, 0, 2},
 151         {3, 0, 3},
 152         {3, 1, 3},
 153 };
 154
 155 static struct lcore_params * lcore_params = lcore_params_array_default;
 156 static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
 157                                 sizeof(lcore_params_array_default[0]);
 158
 159 static struct rte_eth_conf port_conf = {
 160         .rxmode = {
 161                 .mq_mode        = ETH_MQ_RX_RSS,
 162                 .max_rx_pkt_len = ETHER_MAX_LEN,
 163                 .split_hdr_size = 0,
 164                 .offloads = (DEV_RX_OFFLOAD_CRC_STRIP |
 165                              DEV_RX_OFFLOAD_CHECKSUM),
 166         },
 167         .rx_adv_conf = {
 168                 .rss_conf = {
 169                         .rss_key = NULL,
 170                         .rss_hf = ETH_RSS_IP,
 171                 },
 172         },
 173         .txmode = {
 174                 .mq_mode = ETH_MQ_TX_NONE,
 175         },
 176 };
 177
 178 static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 179
 180
 181 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 182
 183 #ifdef RTE_ARCH_X86
 184 #include <rte_hash_crc.h>
 185 #define DEFAULT_HASH_FUNC       rte_hash_crc
 186 #else
 187 #include <rte_jhash.h>
 188 #define DEFAULT_HASH_FUNC       rte_jhash
 189 #endif
 190
 191 struct ipv4_5tuple {
 192         uint32_t ip_dst;
 193         uint32_t ip_src;
 194         uint16_t port_dst;
 195         uint16_t port_src;
 196         uint8_t proto;
 197 } __attribute__((__packed__));
 198
 199 struct l3fwd_route {
 200         struct ipv4_5tuple key;
 201         uint8_t if_out;
 202 };
 203
 204 static struct l3fwd_route l3fwd_route_array[] = {
 205         {{IPv4(100,10,0,1), IPv4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0},
 206         {{IPv4(100,20,0,2), IPv4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1},
 207         {{IPv4(100,30,0,3), IPv4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2},
 208         {{IPv4(100,40,0,4), IPv4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3},
 209 };
 210
 211 typedef struct rte_hash lookup_struct_t;
 212 static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS];
 213
 214 #define L3FWD_HASH_ENTRIES      1024
 215 struct rte_hash_parameters l3fwd_hash_params = {
 216         .name = "l3fwd_hash_0",
 217         .entries = L3FWD_HASH_ENTRIES,
 218         .key_len = sizeof(struct ipv4_5tuple),
 219         .hash_func = DEFAULT_HASH_FUNC,
 220         .hash_func_init_val = 0,
 221         .socket_id = SOCKET0,
 222 };
 223
 224 #define L3FWD_NUM_ROUTES \
 225         (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))
 226
 227 static uint8_t l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 228 #endif
 229
 230 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 231 struct l3fwd_route {
 232         uint32_t ip;
 233         uint8_t  depth;
 234         uint8_t  if_out;
 235 };
 236
 237 static struct l3fwd_route l3fwd_route_array[] = {
 238         {IPv4(1,1,1,0), 24, 0},
 239         {IPv4(2,1,1,0), 24, 1},
 240         {IPv4(3,1,1,0), 24, 2},
 241         {IPv4(4,1,1,0), 24, 3},
 242         {IPv4(5,1,1,0), 24, 4},
 243         {IPv4(6,1,1,0), 24, 5},
 244         {IPv4(7,1,1,0), 24, 6},
 245         {IPv4(8,1,1,0), 24, 7},
 246 };
 247
 248 #define L3FWD_NUM_ROUTES \
 249         (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))
 250
 251 #define L3FWD_LPM_MAX_RULES     1024
 252
 253 typedef struct rte_lpm lookup_struct_t;
 254 static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS];
 255 #endif
 256
 257 struct lcore_conf {
 258         uint16_t n_rx_queue;
 259         struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 260         uint16_t tx_queue_id;
 261         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 262         lookup_struct_t * lookup_struct;
 263 } __rte_cache_aligned;
 264
 265 static struct lcore_conf lcore_conf[RTE_MAX_LCORE];
 266 static rte_spinlock_t spinlock_conf[RTE_MAX_ETHPORTS] = {RTE_SPINLOCK_INITIALIZER};
 267 /* Send burst of packets on an output interface */
 268 static inline int
 269 send_burst(struct lcore_conf *qconf, uint16_t n, uint16_t port)
 270 {
 271         struct rte_mbuf **m_table;
 272         int ret;
 273         uint16_t queueid;
 274
 275         queueid = qconf->tx_queue_id;
 276         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 277
 278         rte_spinlock_lock(&spinlock_conf[port]);
 279         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 280         rte_spinlock_unlock(&spinlock_conf[port]);
 281
 282         if (unlikely(ret < n)) {
 283                 do {
 284                         rte_pktmbuf_free(m_table[ret]);
 285                 } while (++ret < n);
 286         }
 287
 288         return 0;
 289 }
 290
 291 /* Enqueue a single packet, and send burst if queue is filled */
 292 static inline int
 293 send_single_packet(struct rte_mbuf *m, uint16_t port)
 294 {
 295         uint32_t lcore_id;
 296         uint16_t len;
 297         struct lcore_conf *qconf;
 298
 299         lcore_id = rte_lcore_id();
 300
 301         qconf = &lcore_conf[lcore_id];
 302         len = qconf->tx_mbufs[port].len;
 303         qconf->tx_mbufs[port].m_table[len] = m;
 304         len++;
 305
 306         /* enough pkts to be sent */
 307         if (unlikely(len == MAX_PKT_BURST)) {
 308                 send_burst(qconf, MAX_PKT_BURST, port);
 309                 len = 0;
 310         }
 311
 312         qconf->tx_mbufs[port].len = len;
 313         return 0;
 314 }
 315
 316 #ifdef DO_RFC_1812_CHECKS
 317 static inline int
 318 is_valid_ipv4_pkt(struct ipv4_hdr *pkt, uint32_t link_len)
 319 {
 320         /* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */
 321         /*
 322          * 1. The packet length reported by the Link Layer must be large
 323          * enough to hold the minimum length legal IP datagram (20 bytes).
 324          */
 325         if (link_len < sizeof(struct ipv4_hdr))
 326                 return -1;
 327
 328         /* 2. The IP checksum must be correct. */
 329         /* this is checked in H/W */
 330
 331         /*
 332          * 3. The IP version number must be 4. If the version number is not 4
 333          * then the packet may be another version of IP, such as IPng or
 334          * ST-II.
 335          */
 336         if (((pkt->version_ihl) >> 4) != 4)
 337                 return -3;
 338         /*
 339          * 4. The IP header length field must be large enough to hold the
 340          * minimum length legal IP datagram (20 bytes = 5 words).
 341          */
 342         if ((pkt->version_ihl & 0xf) < 5)
 343                 return -4;
 344
 345         /*
 346          * 5. The IP total length field must be large enough to hold the IP
 347          * datagram header, whose length is specified in the IP header length
 348          * field.
 349          */
 350         if (rte_cpu_to_be_16(pkt->total_length) < sizeof(struct ipv4_hdr))
 351                 return -5;
 352
 353         return 0;
 354 }
 355 #endif
 356
 357 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 358 static void
 359 print_key(struct ipv4_5tuple key)
 360 {
 361         printf("IP dst = %08x, IP src = %08x, port dst = %d, port src = %d, proto = %d\n",
 362                (unsigned)key.ip_dst, (unsigned)key.ip_src, key.port_dst, key.port_src, key.proto);
 363 }
 364
 365 static inline uint16_t
 366 get_dst_port(struct ipv4_hdr *ipv4_hdr, uint16_t portid,
 367               lookup_struct_t *l3fwd_lookup_struct)
 368 {
 369         struct ipv4_5tuple key;
 370         struct tcp_hdr *tcp;
 371         struct udp_hdr *udp;
 372         int ret = 0;
 373
 374         key.ip_dst = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
 375         key.ip_src = rte_be_to_cpu_32(ipv4_hdr->src_addr);
 376         key.proto = ipv4_hdr->next_proto_id;
 377
 378         switch (ipv4_hdr->next_proto_id) {
 379         case IPPROTO_TCP:
 380                 tcp = (struct tcp_hdr *)((unsigned char *) ipv4_hdr +
 381                                         sizeof(struct ipv4_hdr));
 382                 key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
 383                 key.port_src = rte_be_to_cpu_16(tcp->src_port);
 384                 break;
 385
 386         case IPPROTO_UDP:
 387                 udp = (struct udp_hdr *)((unsigned char *) ipv4_hdr +
 388                                         sizeof(struct ipv4_hdr));
 389                 key.port_dst = rte_be_to_cpu_16(udp->dst_port);
 390                 key.port_src = rte_be_to_cpu_16(udp->src_port);
 391                 break;
 392
 393         default:
 394                 key.port_dst = 0;
 395                 key.port_src = 0;
 396         }
 397
 398         /* Find destination port */
 399         ret = rte_hash_lookup(l3fwd_lookup_struct, (const void *)&key);
 400         return ((ret < 0) ? portid : l3fwd_out_if[ret]);
 401 }
 402 #endif
 403
 404 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 405 static inline uint32_t
 406 get_dst_port(struct ipv4_hdr *ipv4_hdr, uint16_t portid,
 407               lookup_struct_t *l3fwd_lookup_struct)
 408 {
 409         uint32_t next_hop;
 410
 411         return ((rte_lpm_lookup(l3fwd_lookup_struct,
 412                 rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0) ?
 413                 next_hop : portid);
 414 }
 415 #endif
 416
 417 static inline void
 418 l3fwd_simple_forward(struct rte_mbuf *m, uint16_t portid,
 419                       lookup_struct_t *l3fwd_lookup_struct)
 420 {
 421         struct ether_hdr *eth_hdr;
 422         struct ipv4_hdr *ipv4_hdr;
 423         void *tmp;
 424         uint16_t dst_port;
 425
 426         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 427
 428         ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
 429                                            sizeof(struct ether_hdr));
 430
 431 #ifdef DO_RFC_1812_CHECKS
 432         /* Check to make sure the packet is valid (RFC1812) */
 433         if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
 434                 rte_pktmbuf_free(m);
 435                 return;
 436         }
 437 #endif
 438
 439         dst_port = get_dst_port(ipv4_hdr, portid, l3fwd_lookup_struct);
 440         if (dst_port >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port) == 0)
 441                 dst_port = portid;
 442
 443         /* 02:00:00:00:00:xx */
 444         tmp = &eth_hdr->d_addr.addr_bytes[0];
 445         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 446
 447 #ifdef DO_RFC_1812_CHECKS
 448         /* Update time to live and header checksum */
 449         --(ipv4_hdr->time_to_live);
 450         ++(ipv4_hdr->hdr_checksum);
 451 #endif
 452
 453         /* src addr */
 454         ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 455
 456         send_single_packet(m, dst_port);
 457
 458 }
 459
 460 /* main processing loop */
 461 static int
 462 main_loop(__attribute__((unused)) void *dummy)
 463 {
 464         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 465         unsigned lcore_id;
 466         uint64_t prev_tsc, diff_tsc, cur_tsc;
 467         int i, j, nb_rx;
 468         uint8_t queueid;
 469         uint16_t portid;
 470         struct lcore_conf *qconf;
 471         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 472
 473         prev_tsc = 0;
 474
 475         lcore_id = rte_lcore_id();
 476         qconf = &lcore_conf[lcore_id];
 477
 478         if (qconf->n_rx_queue == 0) {
 479                 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
 480                 return 0;
 481         }
 482
 483         RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
 484
 485         for (i = 0; i < qconf->n_rx_queue; i++) {
 486
 487                 portid = qconf->rx_queue_list[i].port_id;
 488                 queueid = qconf->rx_queue_list[i].queue_id;
 489                 RTE_LOG(INFO, L3FWD, " --lcoreid=%u portid=%u rxqueueid=%hhu\n",
 490                 lcore_id, portid, queueid);
 491         }
 492
 493         while (1) {
 494
 495                 cur_tsc = rte_rdtsc();
 496
 497                 /*
 498                  * TX burst queue drain
 499                  */
 500                 diff_tsc = cur_tsc - prev_tsc;
 501                 if (unlikely(diff_tsc > drain_tsc)) {
 502
 503                         /*
 504                          * This could be optimized (use queueid instead of
 505                          * portid), but it is not called so often
 506                          */
 507                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 508                                 if (qconf->tx_mbufs[portid].len == 0)
 509                                         continue;
 510                                 send_burst(&lcore_conf[lcore_id],
 511                                         qconf->tx_mbufs[portid].len,
 512                                         portid);
 513                                 qconf->tx_mbufs[portid].len = 0;
 514                         }
 515
 516                         prev_tsc = cur_tsc;
 517                 }
 518
 519                 /*
 520                  * Read packet from RX queues
 521                  */
 522                 for (i = 0; i < qconf->n_rx_queue; ++i) {
 523
 524                         portid = qconf->rx_queue_list[i].port_id;
 525                         queueid = qconf->rx_queue_list[i].queue_id;
 526                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, MAX_PKT_BURST);
 527
 528                         /* Prefetch first packets */
 529                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 530                                 rte_prefetch0(rte_pktmbuf_mtod(
 531                                                 pkts_burst[j], void *));
 532                         }
 533
 534                         /* Prefetch and forward already prefetched packets */
 535                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 536                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 537                                                 j + PREFETCH_OFFSET], void *));
 538                                 l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct);
 539                         }
 540
 541                         /* Forward remaining prefetched packets */
 542                         for (; j < nb_rx; j++) {
 543                                 l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct);
 544                         }
 545                 }
 546         }
 547 }
 548
 549 static int
 550 check_lcore_params(void)
 551 {
 552         uint8_t queue, lcore;
 553         uint16_t i;
 554         int socketid;
 555
 556         for (i = 0; i < nb_lcore_params; ++i) {
 557                 queue = lcore_params[i].queue_id;
 558                 if (queue >= MAX_RX_QUEUE_PER_PORT) {
 559                         printf("invalid queue number: %hhu\n", queue);
 560                         return -1;
 561                 }
 562                 lcore = lcore_params[i].lcore_id;
 563                 if (!rte_lcore_is_enabled(lcore)) {
 564                         printf("error: lcore %hhu is not enabled in lcore mask\n", lcore);
 565                         return -1;
 566                 }
 567                 if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
 568                         (numa_on == 0)) {
 569                         printf("warning: lcore %hhu is on socket %d with numa off \n",
 570                                 lcore, socketid);
 571                 }
 572         }
 573         return 0;
 574 }
 575
 576 static int
 577 check_port_config(void)
 578 {
 579         unsigned portid;
 580         uint16_t i;
 581
 582         for (i = 0; i < nb_lcore_params; ++i) {
 583                 portid = lcore_params[i].port_id;
 584                 if ((enabled_port_mask & (1 << portid)) == 0) {
 585                         printf("port %u is not enabled in port mask\n", portid);
 586                         return -1;
 587                 }
 588                 if (!rte_eth_dev_is_valid_port(portid)) {
 589                         printf("port %u is not present on the board\n", portid);
 590                         return -1;
 591                 }
 592         }
 593         return 0;
 594 }
 595
 596 static uint8_t
 597 get_port_n_rx_queues(const uint16_t port)
 598 {
 599         int queue = -1;
 600         uint16_t i;
 601
 602         for (i = 0; i < nb_lcore_params; ++i) {
 603                 if (lcore_params[i].port_id == port && lcore_params[i].queue_id > queue)
 604                         queue = lcore_params[i].queue_id;
 605         }
 606         return (uint8_t)(++queue);
 607 }
 608
 609 static int
 610 init_lcore_rx_queues(void)
 611 {
 612         uint16_t i, nb_rx_queue;
 613         uint8_t lcore;
 614
 615         for (i = 0; i < nb_lcore_params; ++i) {
 616                 lcore = lcore_params[i].lcore_id;
 617                 nb_rx_queue = lcore_conf[lcore].n_rx_queue;
 618                 if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) {
 619                         printf("error: too many queues (%u) for lcore: %u\n",
 620                                 (unsigned)nb_rx_queue + 1, (unsigned)lcore);
 621                         return -1;
 622                 } else {
 623                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id =
 624                                 lcore_params[i].port_id;
 625                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id =
 626                                 lcore_params[i].queue_id;
 627                         lcore_conf[lcore].n_rx_queue++;
 628                 }
 629         }
 630         return 0;
 631 }
 632
 633 /* display usage */
 634 static void
 635 print_usage(const char *prgname)
 636 {
 637         printf ("%s [EAL options] -- -p PORTMASK"
 638                 "  [--config (port,queue,lcore)[,(port,queue,lcore]]\n"
 639                 "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 640                 "  --config (port,queue,lcore): rx queues configuration\n"
 641                 "  --no-numa: optional, disable numa awareness\n",
 642                 prgname);
 643 }
 644
 645 /* Custom handling of signals to handle process terminal */
 646 static void
 647 signal_handler(int signum)
 648 {
 649         uint16_t portid;
 650
 651         /* When we receive a SIGINT signal */
 652         if (signum == SIGINT) {
 653                 RTE_ETH_FOREACH_DEV(portid) {
 654                         /* skip ports that are not enabled */
 655                         if ((enabled_port_mask & (1 << portid)) == 0)
 656                                 continue;
 657                         rte_eth_dev_close(portid);
 658                 }
 659         }
 660         rte_exit(EXIT_SUCCESS, "\n User forced exit\n");
 661 }
 662 static int
 663 parse_portmask(const char *portmask)
 664 {
 665         char *end = NULL;
 666         unsigned long pm;
 667
 668         /* parse hexadecimal string */
 669         pm = strtoul(portmask, &end, 16);
 670         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 671                 return -1;
 672
 673         if (pm == 0)
 674                 return -1;
 675
 676         return pm;
 677 }
 678
 679 static int
 680 parse_config(const char *q_arg)
 681 {
 682         char s[256];
 683         const char *p, *p0 = q_arg;
 684         char *end;
 685         enum fieldnames {
 686                 FLD_PORT = 0,
 687                 FLD_QUEUE,
 688                 FLD_LCORE,
 689                 _NUM_FLD
 690         };
 691         unsigned long int_fld[_NUM_FLD];
 692         char *str_fld[_NUM_FLD];
 693         int i;
 694         unsigned size;
 695
 696         nb_lcore_params = 0;
 697
 698         while ((p = strchr(p0,'(')) != NULL) {
 699                 ++p;
 700                 if((p0 = strchr(p,')')) == NULL)
 701                         return -1;
 702
 703                 size = p0 - p;
 704                 if(size >= sizeof(s))
 705                         return -1;
 706
 707                 snprintf(s, sizeof(s), "%.*s", size, p);
 708                 if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD)
 709                         return -1;
 710                 for (i = 0; i < _NUM_FLD; i++){
 711                         errno = 0;
 712                         int_fld[i] = strtoul(str_fld[i], &end, 0);
 713                         if (errno != 0 || end == str_fld[i] || int_fld[i] > 255)
 714                                 return -1;
 715                 }
 716                 if (nb_lcore_params >= MAX_LCORE_PARAMS) {
 717                         printf("exceeded max number of lcore params: %hu\n",
 718                                 nb_lcore_params);
 719                         return -1;
 720                 }
 721                 lcore_params_array[nb_lcore_params].port_id = int_fld[FLD_PORT];
 722                 lcore_params_array[nb_lcore_params].queue_id = (uint8_t)int_fld[FLD_QUEUE];
 723                 lcore_params_array[nb_lcore_params].lcore_id = (uint8_t)int_fld[FLD_LCORE];
 724                 ++nb_lcore_params;
 725         }
 726         lcore_params = lcore_params_array;
 727         return 0;
 728 }
 729
 730 /* Parse the argument given in the command line of the application */
 731 static int
 732 parse_args(int argc, char **argv)
 733 {
 734         int opt, ret;
 735         char **argvopt;
 736         int option_index;
 737         char *prgname = argv[0];
 738         static struct option lgopts[] = {
 739                 {"config", 1, 0, 0},
 740                 {"no-numa", 0, 0, 0},
 741                 {NULL, 0, 0, 0}
 742         };
 743
 744         argvopt = argv;
 745
 746         while ((opt = getopt_long(argc, argvopt, "p:",
 747                                 lgopts, &option_index)) != EOF) {
 748
 749                 switch (opt) {
 750                 /* portmask */
 751                 case 'p':
 752                         enabled_port_mask = parse_portmask(optarg);
 753                         if (enabled_port_mask == 0) {
 754                                 printf("invalid portmask\n");
 755                                 print_usage(prgname);
 756                                 return -1;
 757                         }
 758                         break;
 759
 760                 /* long options */
 761                 case 0:
 762                         if (!strcmp(lgopts[option_index].name, "config")) {
 763                                 ret = parse_config(optarg);
 764                                 if (ret) {
 765                                         printf("invalid config\n");
 766                                         print_usage(prgname);
 767                                         return -1;
 768                                 }
 769                         }
 770
 771                         if (!strcmp(lgopts[option_index].name, "no-numa")) {
 772                                 printf("numa is disabled \n");
 773                                 numa_on = 0;
 774                         }
 775                         break;
 776
 777                 default:
 778                         print_usage(prgname);
 779                         return -1;
 780                 }
 781         }
 782
 783         if (optind >= 0)
 784                 argv[optind-1] = prgname;
 785
 786         ret = optind-1;
 787         optind = 1; /* reset getopt lib */
 788         return ret;
 789 }
 790
 791 static void
 792 print_ethaddr(const char *name, const struct ether_addr *eth_addr)
 793 {
 794         char buf[ETHER_ADDR_FMT_SIZE];
 795         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
 796         printf("%s%s", name, buf);
 797 }
 798
 799 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 800 static void
 801 setup_hash(int socketid)
 802 {
 803         unsigned i;
 804         int ret;
 805         char s[64];
 806
 807         /* create  hashes */
 808         snprintf(s, sizeof(s), "l3fwd_hash_%d", socketid);
 809         l3fwd_hash_params.name = s;
 810         l3fwd_hash_params.socket_id = socketid;
 811         l3fwd_lookup_struct[socketid] = rte_hash_create(&l3fwd_hash_params);
 812         if (l3fwd_lookup_struct[socketid] == NULL)
 813                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
 814                                 "socket %d\n", socketid);
 815
 816         /* populate the hash */
 817         for (i = 0; i < L3FWD_NUM_ROUTES; i++) {
 818                 ret = rte_hash_add_key (l3fwd_lookup_struct[socketid],
 819                                 (void *) &l3fwd_route_array[i].key);
 820                 if (ret < 0) {
 821                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
 822                                 "l3fwd hash on socket %d\n", i, socketid);
 823                 }
 824                 l3fwd_out_if[ret] = l3fwd_route_array[i].if_out;
 825                 printf("Hash: Adding key\n");
 826                 print_key(l3fwd_route_array[i].key);
 827         }
 828 }
 829 #endif
 830
 831 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 832 static void
 833 setup_lpm(int socketid)
 834 {
 835         unsigned i;
 836         int ret;
 837         char s[64];
 838
 839         struct rte_lpm_config lpm_ipv4_config;
 840
 841         lpm_ipv4_config.max_rules = L3FWD_LPM_MAX_RULES;
 842         lpm_ipv4_config.number_tbl8s = 256;
 843         lpm_ipv4_config.flags = 0;
 844
 845         /* create the LPM table */
 846         snprintf(s, sizeof(s), "L3FWD_LPM_%d", socketid);
 847         l3fwd_lookup_struct[socketid] =
 848                         rte_lpm_create(s, socketid, &lpm_ipv4_config);
 849         if (l3fwd_lookup_struct[socketid] == NULL)
 850                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
 851                                 " on socket %d\n", socketid);
 852
 853         /* populate the LPM table */
 854         for (i = 0; i < L3FWD_NUM_ROUTES; i++) {
 855                 ret = rte_lpm_add(l3fwd_lookup_struct[socketid],
 856                         l3fwd_route_array[i].ip,
 857                         l3fwd_route_array[i].depth,
 858                         l3fwd_route_array[i].if_out);
 859
 860                 if (ret < 0) {
 861                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the "
 862                                 "l3fwd LPM table on socket %d\n",
 863                                 i, socketid);
 864                 }
 865
 866                 printf("LPM: Adding route 0x%08x / %d (%d)\n",
 867                         (unsigned)l3fwd_route_array[i].ip,
 868                         l3fwd_route_array[i].depth,
 869                         l3fwd_route_array[i].if_out);
 870         }
 871 }
 872 #endif
 873
 874 static int
 875 init_mem(unsigned nb_mbuf)
 876 {
 877         struct lcore_conf *qconf;
 878         int socketid;
 879         unsigned lcore_id;
 880         char s[64];
 881
 882         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 883                 if (rte_lcore_is_enabled(lcore_id) == 0)
 884                         continue;
 885
 886                 if (numa_on)
 887                         socketid = rte_lcore_to_socket_id(lcore_id);
 888                 else
 889                         socketid = 0;
 890
 891                 if (socketid >= NB_SOCKETS) {
 892                         rte_exit(EXIT_FAILURE, "Socket %d of lcore %u is out of range %d\n",
 893                                 socketid, lcore_id, NB_SOCKETS);
 894                 }
 895                 if (pktmbuf_pool[socketid] == NULL) {
 896                         snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
 897                         pktmbuf_pool[socketid] = rte_pktmbuf_pool_create(s,
 898                                 nb_mbuf, MEMPOOL_CACHE_SIZE, 0,
 899                                 RTE_MBUF_DEFAULT_BUF_SIZE, socketid);
 900                         if (pktmbuf_pool[socketid] == NULL)
 901                                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool on socket %d\n", socketid);
 902                         else
 903                                 printf("Allocated mbuf pool on socket %d\n", socketid);
 904
 905 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 906                         setup_lpm(socketid);
 907 #else
 908                         setup_hash(socketid);
 909 #endif
 910                 }
 911                 qconf = &lcore_conf[lcore_id];
 912                 qconf->lookup_struct = l3fwd_lookup_struct[socketid];
 913         }
 914         return 0;
 915 }
 916
 917 int
 918 main(int argc, char **argv)
 919 {
 920         struct lcore_conf *qconf;
 921         struct rte_eth_dev_info dev_info;
 922         struct rte_eth_txconf *txconf;
 923         int ret;
 924         unsigned nb_ports;
 925         uint16_t queueid, portid;
 926         unsigned lcore_id;
 927         uint32_t nb_lcores;
 928         uint16_t n_tx_queue;
 929         uint8_t nb_rx_queue, queue, socketid;
 930
 931         signal(SIGINT, signal_handler);
 932         /* init EAL */
 933         ret = rte_eal_init(argc, argv);
 934         if (ret < 0)
 935                 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
 936         argc -= ret;
 937         argv += ret;
 938
 939         /* parse application arguments (after the EAL ones) */
 940         ret = parse_args(argc, argv);
 941         if (ret < 0)
 942                 rte_exit(EXIT_FAILURE, "Invalid L3FWD-VF parameters\n");
 943
 944         if (check_lcore_params() < 0)
 945                 rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");
 946
 947         ret = init_lcore_rx_queues();
 948         if (ret < 0)
 949                 rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");
 950
 951         nb_ports = rte_eth_dev_count_avail();
 952
 953         if (check_port_config() < 0)
 954                 rte_exit(EXIT_FAILURE, "check_port_config failed\n");
 955
 956         nb_lcores = rte_lcore_count();
 957
 958         /* initialize all ports */
 959         RTE_ETH_FOREACH_DEV(portid) {
 960                 struct rte_eth_conf local_port_conf = port_conf;
 961
 962                 /* skip ports that are not enabled */
 963                 if ((enabled_port_mask & (1 << portid)) == 0) {
 964                         printf("\nSkipping disabled port %d\n", portid);
 965                         continue;
 966                 }
 967
 968                 /* init port */
 969                 printf("Initializing port %d ... ", portid );
 970                 fflush(stdout);
 971
 972                 /* must always equal(=1) */
 973                 nb_rx_queue = get_port_n_rx_queues(portid);
 974                 n_tx_queue = MAX_TX_QUEUE_PER_PORT;
 975
 976                 printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
 977                         nb_rx_queue, (unsigned)1 );
 978
 979                 rte_eth_dev_info_get(portid, &dev_info);
 980                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 981                         local_port_conf.txmode.offloads |=
 982                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 983
 984                 local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
 985                         dev_info.flow_type_rss_offloads;
 986                 if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
 987                                 port_conf.rx_adv_conf.rss_conf.rss_hf) {
 988                         printf("Port %u modified RSS hash function based on hardware support,"
 989                                 "requested:%#"PRIx64" configured:%#"PRIx64"\n",
 990                                 portid,
 991                                 port_conf.rx_adv_conf.rss_conf.rss_hf,
 992                                 local_port_conf.rx_adv_conf.rss_conf.rss_hf);
 993                 }
 994
 995                 ret = rte_eth_dev_configure(portid, nb_rx_queue,
 996                                             n_tx_queue, &local_port_conf);
 997                 if (ret < 0)
 998                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%d\n",
 999                                 ret, portid);
1000
1001                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
1002                                                        &nb_txd);
1003                 if (ret < 0)
1004                         rte_exit(EXIT_FAILURE,
1005                                  "Cannot adjust number of descriptors: err=%d, port=%d\n",
1006                                  ret, portid);
1007
1008                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
1009                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
1010                 printf(", ");
1011
1012                 ret = init_mem(NB_MBUF);
1013                 if (ret < 0)
1014                         rte_exit(EXIT_FAILURE, "init_mem failed\n");
1015
1016                 /* init one TX queue */
1017                 socketid = (uint8_t)rte_lcore_to_socket_id(rte_get_master_lcore());
1018
1019                 printf("txq=%d,%d,%d ", portid, 0, socketid);
1020                 fflush(stdout);
1021
1022                 txconf = &dev_info.default_txconf;
1023                 txconf->offloads = local_port_conf.txmode.offloads;
1024                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
1025                                                  socketid, txconf);
1026                 if (ret < 0)
1027                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
1028                                 "port=%d\n", ret, portid);
1029
1030                 printf("\n");
1031         }
1032
1033         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1034                 struct rte_eth_rxconf rxq_conf;
1035
1036                 if (rte_lcore_is_enabled(lcore_id) == 0)
1037                         continue;
1038                 qconf = &lcore_conf[lcore_id];
1039                 qconf->tx_queue_id = 0;
1040
1041                 printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
1042                 fflush(stdout);
1043                 /* init RX queues */
1044                 for(queue = 0; queue < qconf->n_rx_queue; ++queue) {
1045                         struct rte_eth_dev *dev;
1046                         struct rte_eth_conf *conf;
1047
1048                         portid = qconf->rx_queue_list[queue].port_id;
1049                         queueid = qconf->rx_queue_list[queue].queue_id;
1050                         dev = &rte_eth_devices[portid];
1051                         conf = &dev->data->dev_conf;
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                         rte_eth_dev_info_get(portid, &dev_info);
1062                         rxq_conf = dev_info.default_rxconf;
1063                         rxq_conf.offloads = conf->rxmode.offloads;
1064                         ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
1065                                                 socketid, &rxq_conf,
1066                                                 pktmbuf_pool[socketid]);
1067                         if (ret < 0)
1068                                 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d,"
1069                                                 "port=%d\n", ret, portid);
1070                 }
1071         }
1072         printf("\n");
1073
1074         /* start ports */
1075         RTE_ETH_FOREACH_DEV(portid) {
1076                 if ((enabled_port_mask & (1 << portid)) == 0) {
1077                         continue;
1078                 }
1079                 /* Start device */
1080                 ret = rte_eth_dev_start(portid);
1081                 if (ret < 0)
1082                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
1083                                 ret, portid);
1084
1085                 printf("done: Port %d\n", portid);
1086
1087         }
1088
1089         /* launch per-lcore init on every lcore */
1090         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1091         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1092                 if (rte_eal_wait_lcore(lcore_id) < 0)
1093                         return -1;
1094         }
1095
1096         return 0;
1097 }