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                 .ignore_offload_bitfield = 1,
 165                 .offloads = (DEV_RX_OFFLOAD_CRC_STRIP |
 166                              DEV_RX_OFFLOAD_CHECKSUM),
 167         },
 168         .rx_adv_conf = {
 169                 .rss_conf = {
 170                         .rss_key = NULL,
 171                         .rss_hf = ETH_RSS_IP,
 172                 },
 173         },
 174         .txmode = {
 175                 .mq_mode = ETH_MQ_TX_NONE,
 176         },
 177 };
 178
 179 static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 180
 181
 182 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 183
 184 #ifdef RTE_ARCH_X86
 185 #include <rte_hash_crc.h>
 186 #define DEFAULT_HASH_FUNC       rte_hash_crc
 187 #else
 188 #include <rte_jhash.h>
 189 #define DEFAULT_HASH_FUNC       rte_jhash
 190 #endif
 191
 192 struct ipv4_5tuple {
 193         uint32_t ip_dst;
 194         uint32_t ip_src;
 195         uint16_t port_dst;
 196         uint16_t port_src;
 197         uint8_t proto;
 198 } __attribute__((__packed__));
 199
 200 struct l3fwd_route {
 201         struct ipv4_5tuple key;
 202         uint8_t if_out;
 203 };
 204
 205 static struct l3fwd_route l3fwd_route_array[] = {
 206         {{IPv4(100,10,0,1), IPv4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0},
 207         {{IPv4(100,20,0,2), IPv4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1},
 208         {{IPv4(100,30,0,3), IPv4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2},
 209         {{IPv4(100,40,0,4), IPv4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3},
 210 };
 211
 212 typedef struct rte_hash lookup_struct_t;
 213 static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS];
 214
 215 #define L3FWD_HASH_ENTRIES      1024
 216 struct rte_hash_parameters l3fwd_hash_params = {
 217         .name = "l3fwd_hash_0",
 218         .entries = L3FWD_HASH_ENTRIES,
 219         .key_len = sizeof(struct ipv4_5tuple),
 220         .hash_func = DEFAULT_HASH_FUNC,
 221         .hash_func_init_val = 0,
 222         .socket_id = SOCKET0,
 223 };
 224
 225 #define L3FWD_NUM_ROUTES \
 226         (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))
 227
 228 static uint8_t l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 229 #endif
 230
 231 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 232 struct l3fwd_route {
 233         uint32_t ip;
 234         uint8_t  depth;
 235         uint8_t  if_out;
 236 };
 237
 238 static struct l3fwd_route l3fwd_route_array[] = {
 239         {IPv4(1,1,1,0), 24, 0},
 240         {IPv4(2,1,1,0), 24, 1},
 241         {IPv4(3,1,1,0), 24, 2},
 242         {IPv4(4,1,1,0), 24, 3},
 243         {IPv4(5,1,1,0), 24, 4},
 244         {IPv4(6,1,1,0), 24, 5},
 245         {IPv4(7,1,1,0), 24, 6},
 246         {IPv4(8,1,1,0), 24, 7},
 247 };
 248
 249 #define L3FWD_NUM_ROUTES \
 250         (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))
 251
 252 #define L3FWD_LPM_MAX_RULES     1024
 253
 254 typedef struct rte_lpm lookup_struct_t;
 255 static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS];
 256 #endif
 257
 258 struct lcore_conf {
 259         uint16_t n_rx_queue;
 260         struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 261         uint16_t tx_queue_id;
 262         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 263         lookup_struct_t * lookup_struct;
 264 } __rte_cache_aligned;
 265
 266 static struct lcore_conf lcore_conf[RTE_MAX_LCORE];
 267 static rte_spinlock_t spinlock_conf[RTE_MAX_ETHPORTS] = {RTE_SPINLOCK_INITIALIZER};
 268 /* Send burst of packets on an output interface */
 269 static inline int
 270 send_burst(struct lcore_conf *qconf, uint16_t n, uint16_t port)
 271 {
 272         struct rte_mbuf **m_table;
 273         int ret;
 274         uint16_t queueid;
 275
 276         queueid = qconf->tx_queue_id;
 277         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 278
 279         rte_spinlock_lock(&spinlock_conf[port]);
 280         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 281         rte_spinlock_unlock(&spinlock_conf[port]);
 282
 283         if (unlikely(ret < n)) {
 284                 do {
 285                         rte_pktmbuf_free(m_table[ret]);
 286                 } while (++ret < n);
 287         }
 288
 289         return 0;
 290 }
 291
 292 /* Enqueue a single packet, and send burst if queue is filled */
 293 static inline int
 294 send_single_packet(struct rte_mbuf *m, uint16_t port)
 295 {
 296         uint32_t lcore_id;
 297         uint16_t len;
 298         struct lcore_conf *qconf;
 299
 300         lcore_id = rte_lcore_id();
 301
 302         qconf = &lcore_conf[lcore_id];
 303         len = qconf->tx_mbufs[port].len;
 304         qconf->tx_mbufs[port].m_table[len] = m;
 305         len++;
 306
 307         /* enough pkts to be sent */
 308         if (unlikely(len == MAX_PKT_BURST)) {
 309                 send_burst(qconf, MAX_PKT_BURST, port);
 310                 len = 0;
 311         }
 312
 313         qconf->tx_mbufs[port].len = len;
 314         return 0;
 315 }
 316
 317 #ifdef DO_RFC_1812_CHECKS
 318 static inline int
 319 is_valid_ipv4_pkt(struct ipv4_hdr *pkt, uint32_t link_len)
 320 {
 321         /* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */
 322         /*
 323          * 1. The packet length reported by the Link Layer must be large
 324          * enough to hold the minimum length legal IP datagram (20 bytes).
 325          */
 326         if (link_len < sizeof(struct ipv4_hdr))
 327                 return -1;
 328
 329         /* 2. The IP checksum must be correct. */
 330         /* this is checked in H/W */
 331
 332         /*
 333          * 3. The IP version number must be 4. If the version number is not 4
 334          * then the packet may be another version of IP, such as IPng or
 335          * ST-II.
 336          */
 337         if (((pkt->version_ihl) >> 4) != 4)
 338                 return -3;
 339         /*
 340          * 4. The IP header length field must be large enough to hold the
 341          * minimum length legal IP datagram (20 bytes = 5 words).
 342          */
 343         if ((pkt->version_ihl & 0xf) < 5)
 344                 return -4;
 345
 346         /*
 347          * 5. The IP total length field must be large enough to hold the IP
 348          * datagram header, whose length is specified in the IP header length
 349          * field.
 350          */
 351         if (rte_cpu_to_be_16(pkt->total_length) < sizeof(struct ipv4_hdr))
 352                 return -5;
 353
 354         return 0;
 355 }
 356 #endif
 357
 358 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 359 static void
 360 print_key(struct ipv4_5tuple key)
 361 {
 362         printf("IP dst = %08x, IP src = %08x, port dst = %d, port src = %d, proto = %d\n",
 363                (unsigned)key.ip_dst, (unsigned)key.ip_src, key.port_dst, key.port_src, key.proto);
 364 }
 365
 366 static inline uint16_t
 367 get_dst_port(struct ipv4_hdr *ipv4_hdr, uint16_t portid,
 368               lookup_struct_t *l3fwd_lookup_struct)
 369 {
 370         struct ipv4_5tuple key;
 371         struct tcp_hdr *tcp;
 372         struct udp_hdr *udp;
 373         int ret = 0;
 374
 375         key.ip_dst = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
 376         key.ip_src = rte_be_to_cpu_32(ipv4_hdr->src_addr);
 377         key.proto = ipv4_hdr->next_proto_id;
 378
 379         switch (ipv4_hdr->next_proto_id) {
 380         case IPPROTO_TCP:
 381                 tcp = (struct tcp_hdr *)((unsigned char *) ipv4_hdr +
 382                                         sizeof(struct ipv4_hdr));
 383                 key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
 384                 key.port_src = rte_be_to_cpu_16(tcp->src_port);
 385                 break;
 386
 387         case IPPROTO_UDP:
 388                 udp = (struct udp_hdr *)((unsigned char *) ipv4_hdr +
 389                                         sizeof(struct ipv4_hdr));
 390                 key.port_dst = rte_be_to_cpu_16(udp->dst_port);
 391                 key.port_src = rte_be_to_cpu_16(udp->src_port);
 392                 break;
 393
 394         default:
 395                 key.port_dst = 0;
 396                 key.port_src = 0;
 397         }
 398
 399         /* Find destination port */
 400         ret = rte_hash_lookup(l3fwd_lookup_struct, (const void *)&key);
 401         return ((ret < 0) ? portid : l3fwd_out_if[ret]);
 402 }
 403 #endif
 404
 405 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 406 static inline uint32_t
 407 get_dst_port(struct ipv4_hdr *ipv4_hdr, uint16_t portid,
 408               lookup_struct_t *l3fwd_lookup_struct)
 409 {
 410         uint32_t next_hop;
 411
 412         return ((rte_lpm_lookup(l3fwd_lookup_struct,
 413                 rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0) ?
 414                 next_hop : portid);
 415 }
 416 #endif
 417
 418 static inline void
 419 l3fwd_simple_forward(struct rte_mbuf *m, uint16_t portid,
 420                       lookup_struct_t *l3fwd_lookup_struct)
 421 {
 422         struct ether_hdr *eth_hdr;
 423         struct ipv4_hdr *ipv4_hdr;
 424         void *tmp;
 425         uint16_t dst_port;
 426
 427         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 428
 429         ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
 430                                            sizeof(struct ether_hdr));
 431
 432 #ifdef DO_RFC_1812_CHECKS
 433         /* Check to make sure the packet is valid (RFC1812) */
 434         if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
 435                 rte_pktmbuf_free(m);
 436                 return;
 437         }
 438 #endif
 439
 440         dst_port = get_dst_port(ipv4_hdr, portid, l3fwd_lookup_struct);
 441         if (dst_port >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port) == 0)
 442                 dst_port = portid;
 443
 444         /* 02:00:00:00:00:xx */
 445         tmp = &eth_hdr->d_addr.addr_bytes[0];
 446         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 447
 448 #ifdef DO_RFC_1812_CHECKS
 449         /* Update time to live and header checksum */
 450         --(ipv4_hdr->time_to_live);
 451         ++(ipv4_hdr->hdr_checksum);
 452 #endif
 453
 454         /* src addr */
 455         ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 456
 457         send_single_packet(m, dst_port);
 458
 459 }
 460
 461 /* main processing loop */
 462 static int
 463 main_loop(__attribute__((unused)) void *dummy)
 464 {
 465         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 466         unsigned lcore_id;
 467         uint64_t prev_tsc, diff_tsc, cur_tsc;
 468         int i, j, nb_rx;
 469         uint8_t queueid;
 470         uint16_t portid;
 471         struct lcore_conf *qconf;
 472         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 473
 474         prev_tsc = 0;
 475
 476         lcore_id = rte_lcore_id();
 477         qconf = &lcore_conf[lcore_id];
 478
 479         if (qconf->n_rx_queue == 0) {
 480                 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
 481                 return 0;
 482         }
 483
 484         RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
 485
 486         for (i = 0; i < qconf->n_rx_queue; i++) {
 487
 488                 portid = qconf->rx_queue_list[i].port_id;
 489                 queueid = qconf->rx_queue_list[i].queue_id;
 490                 RTE_LOG(INFO, L3FWD, " --lcoreid=%u portid=%u rxqueueid=%hhu\n",
 491                 lcore_id, portid, queueid);
 492         }
 493
 494         while (1) {
 495
 496                 cur_tsc = rte_rdtsc();
 497
 498                 /*
 499                  * TX burst queue drain
 500                  */
 501                 diff_tsc = cur_tsc - prev_tsc;
 502                 if (unlikely(diff_tsc > drain_tsc)) {
 503
 504                         /*
 505                          * This could be optimized (use queueid instead of
 506                          * portid), but it is not called so often
 507                          */
 508                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 509                                 if (qconf->tx_mbufs[portid].len == 0)
 510                                         continue;
 511                                 send_burst(&lcore_conf[lcore_id],
 512                                         qconf->tx_mbufs[portid].len,
 513                                         portid);
 514                                 qconf->tx_mbufs[portid].len = 0;
 515                         }
 516
 517                         prev_tsc = cur_tsc;
 518                 }
 519
 520                 /*
 521                  * Read packet from RX queues
 522                  */
 523                 for (i = 0; i < qconf->n_rx_queue; ++i) {
 524
 525                         portid = qconf->rx_queue_list[i].port_id;
 526                         queueid = qconf->rx_queue_list[i].queue_id;
 527                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, MAX_PKT_BURST);
 528
 529                         /* Prefetch first packets */
 530                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 531                                 rte_prefetch0(rte_pktmbuf_mtod(
 532                                                 pkts_burst[j], void *));
 533                         }
 534
 535                         /* Prefetch and forward already prefetched packets */
 536                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 537                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 538                                                 j + PREFETCH_OFFSET], void *));
 539                                 l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct);
 540                         }
 541
 542                         /* Forward remaining prefetched packets */
 543                         for (; j < nb_rx; j++) {
 544                                 l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct);
 545                         }
 546                 }
 547         }
 548 }
 549
 550 static int
 551 check_lcore_params(void)
 552 {
 553         uint8_t queue, lcore;
 554         uint16_t i;
 555         int socketid;
 556
 557         for (i = 0; i < nb_lcore_params; ++i) {
 558                 queue = lcore_params[i].queue_id;
 559                 if (queue >= MAX_RX_QUEUE_PER_PORT) {
 560                         printf("invalid queue number: %hhu\n", queue);
 561                         return -1;
 562                 }
 563                 lcore = lcore_params[i].lcore_id;
 564                 if (!rte_lcore_is_enabled(lcore)) {
 565                         printf("error: lcore %hhu is not enabled in lcore mask\n", lcore);
 566                         return -1;
 567                 }
 568                 if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
 569                         (numa_on == 0)) {
 570                         printf("warning: lcore %hhu is on socket %d with numa off \n",
 571                                 lcore, socketid);
 572                 }
 573         }
 574         return 0;
 575 }
 576
 577 static int
 578 check_port_config(const unsigned nb_ports)
 579 {
 580         unsigned portid;
 581         uint16_t i;
 582
 583         for (i = 0; i < nb_lcore_params; ++i) {
 584                 portid = lcore_params[i].port_id;
 585                 if ((enabled_port_mask & (1 << portid)) == 0) {
 586                         printf("port %u is not enabled in port mask\n", portid);
 587                         return -1;
 588                 }
 589                 if (portid >= nb_ports) {
 590                         printf("port %u is not present on the board\n", portid);
 591                         return -1;
 592                 }
 593         }
 594         return 0;
 595 }
 596
 597 static uint8_t
 598 get_port_n_rx_queues(const uint16_t port)
 599 {
 600         int queue = -1;
 601         uint16_t i;
 602
 603         for (i = 0; i < nb_lcore_params; ++i) {
 604                 if (lcore_params[i].port_id == port && lcore_params[i].queue_id > queue)
 605                         queue = lcore_params[i].queue_id;
 606         }
 607         return (uint8_t)(++queue);
 608 }
 609
 610 static int
 611 init_lcore_rx_queues(void)
 612 {
 613         uint16_t i, nb_rx_queue;
 614         uint8_t lcore;
 615
 616         for (i = 0; i < nb_lcore_params; ++i) {
 617                 lcore = lcore_params[i].lcore_id;
 618                 nb_rx_queue = lcore_conf[lcore].n_rx_queue;
 619                 if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) {
 620                         printf("error: too many queues (%u) for lcore: %u\n",
 621                                 (unsigned)nb_rx_queue + 1, (unsigned)lcore);
 622                         return -1;
 623                 } else {
 624                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id =
 625                                 lcore_params[i].port_id;
 626                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id =
 627                                 lcore_params[i].queue_id;
 628                         lcore_conf[lcore].n_rx_queue++;
 629                 }
 630         }
 631         return 0;
 632 }
 633
 634 /* display usage */
 635 static void
 636 print_usage(const char *prgname)
 637 {
 638         printf ("%s [EAL options] -- -p PORTMASK"
 639                 "  [--config (port,queue,lcore)[,(port,queue,lcore]]\n"
 640                 "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 641                 "  --config (port,queue,lcore): rx queues configuration\n"
 642                 "  --no-numa: optional, disable numa awareness\n",
 643                 prgname);
 644 }
 645
 646 /* Custom handling of signals to handle process terminal */
 647 static void
 648 signal_handler(int signum)
 649 {
 650         uint16_t portid;
 651         uint16_t nb_ports = rte_eth_dev_count();
 652
 653         /* When we receive a SIGINT signal */
 654         if (signum == SIGINT) {
 655                 for (portid = 0; portid < nb_ports; portid++) {
 656                         /* skip ports that are not enabled */
 657                         if ((enabled_port_mask & (1 << portid)) == 0)
 658                                 continue;
 659                         rte_eth_dev_close(portid);
 660                 }
 661         }
 662         rte_exit(EXIT_SUCCESS, "\n User forced exit\n");
 663 }
 664 static int
 665 parse_portmask(const char *portmask)
 666 {
 667         char *end = NULL;
 668         unsigned long pm;
 669
 670         /* parse hexadecimal string */
 671         pm = strtoul(portmask, &end, 16);
 672         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 673                 return -1;
 674
 675         if (pm == 0)
 676                 return -1;
 677
 678         return pm;
 679 }
 680
 681 static int
 682 parse_config(const char *q_arg)
 683 {
 684         char s[256];
 685         const char *p, *p0 = q_arg;
 686         char *end;
 687         enum fieldnames {
 688                 FLD_PORT = 0,
 689                 FLD_QUEUE,
 690                 FLD_LCORE,
 691                 _NUM_FLD
 692         };
 693         unsigned long int_fld[_NUM_FLD];
 694         char *str_fld[_NUM_FLD];
 695         int i;
 696         unsigned size;
 697
 698         nb_lcore_params = 0;
 699
 700         while ((p = strchr(p0,'(')) != NULL) {
 701                 ++p;
 702                 if((p0 = strchr(p,')')) == NULL)
 703                         return -1;
 704
 705                 size = p0 - p;
 706                 if(size >= sizeof(s))
 707                         return -1;
 708
 709                 snprintf(s, sizeof(s), "%.*s", size, p);
 710                 if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD)
 711                         return -1;
 712                 for (i = 0; i < _NUM_FLD; i++){
 713                         errno = 0;
 714                         int_fld[i] = strtoul(str_fld[i], &end, 0);
 715                         if (errno != 0 || end == str_fld[i] || int_fld[i] > 255)
 716                                 return -1;
 717                 }
 718                 if (nb_lcore_params >= MAX_LCORE_PARAMS) {
 719                         printf("exceeded max number of lcore params: %hu\n",
 720                                 nb_lcore_params);
 721                         return -1;
 722                 }
 723                 lcore_params_array[nb_lcore_params].port_id = int_fld[FLD_PORT];
 724                 lcore_params_array[nb_lcore_params].queue_id = (uint8_t)int_fld[FLD_QUEUE];
 725                 lcore_params_array[nb_lcore_params].lcore_id = (uint8_t)int_fld[FLD_LCORE];
 726                 ++nb_lcore_params;
 727         }
 728         lcore_params = lcore_params_array;
 729         return 0;
 730 }
 731
 732 /* Parse the argument given in the command line of the application */
 733 static int
 734 parse_args(int argc, char **argv)
 735 {
 736         int opt, ret;
 737         char **argvopt;
 738         int option_index;
 739         char *prgname = argv[0];
 740         static struct option lgopts[] = {
 741                 {"config", 1, 0, 0},
 742                 {"no-numa", 0, 0, 0},
 743                 {NULL, 0, 0, 0}
 744         };
 745
 746         argvopt = argv;
 747
 748         while ((opt = getopt_long(argc, argvopt, "p:",
 749                                 lgopts, &option_index)) != EOF) {
 750
 751                 switch (opt) {
 752                 /* portmask */
 753                 case 'p':
 754                         enabled_port_mask = parse_portmask(optarg);
 755                         if (enabled_port_mask == 0) {
 756                                 printf("invalid portmask\n");
 757                                 print_usage(prgname);
 758                                 return -1;
 759                         }
 760                         break;
 761
 762                 /* long options */
 763                 case 0:
 764                         if (!strcmp(lgopts[option_index].name, "config")) {
 765                                 ret = parse_config(optarg);
 766                                 if (ret) {
 767                                         printf("invalid config\n");
 768                                         print_usage(prgname);
 769                                         return -1;
 770                                 }
 771                         }
 772
 773                         if (!strcmp(lgopts[option_index].name, "no-numa")) {
 774                                 printf("numa is disabled \n");
 775                                 numa_on = 0;
 776                         }
 777                         break;
 778
 779                 default:
 780                         print_usage(prgname);
 781                         return -1;
 782                 }
 783         }
 784
 785         if (optind >= 0)
 786                 argv[optind-1] = prgname;
 787
 788         ret = optind-1;
 789         optind = 1; /* reset getopt lib */
 790         return ret;
 791 }
 792
 793 static void
 794 print_ethaddr(const char *name, const struct ether_addr *eth_addr)
 795 {
 796         char buf[ETHER_ADDR_FMT_SIZE];
 797         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
 798         printf("%s%s", name, buf);
 799 }
 800
 801 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 802 static void
 803 setup_hash(int socketid)
 804 {
 805         unsigned i;
 806         int ret;
 807         char s[64];
 808
 809         /* create  hashes */
 810         snprintf(s, sizeof(s), "l3fwd_hash_%d", socketid);
 811         l3fwd_hash_params.name = s;
 812         l3fwd_hash_params.socket_id = socketid;
 813         l3fwd_lookup_struct[socketid] = rte_hash_create(&l3fwd_hash_params);
 814         if (l3fwd_lookup_struct[socketid] == NULL)
 815                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
 816                                 "socket %d\n", socketid);
 817
 818         /* populate the hash */
 819         for (i = 0; i < L3FWD_NUM_ROUTES; i++) {
 820                 ret = rte_hash_add_key (l3fwd_lookup_struct[socketid],
 821                                 (void *) &l3fwd_route_array[i].key);
 822                 if (ret < 0) {
 823                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
 824                                 "l3fwd hash on socket %d\n", i, socketid);
 825                 }
 826                 l3fwd_out_if[ret] = l3fwd_route_array[i].if_out;
 827                 printf("Hash: Adding key\n");
 828                 print_key(l3fwd_route_array[i].key);
 829         }
 830 }
 831 #endif
 832
 833 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 834 static void
 835 setup_lpm(int socketid)
 836 {
 837         unsigned i;
 838         int ret;
 839         char s[64];
 840
 841         struct rte_lpm_config lpm_ipv4_config;
 842
 843         lpm_ipv4_config.max_rules = L3FWD_LPM_MAX_RULES;
 844         lpm_ipv4_config.number_tbl8s = 256;
 845         lpm_ipv4_config.flags = 0;
 846
 847         /* create the LPM table */
 848         snprintf(s, sizeof(s), "L3FWD_LPM_%d", socketid);
 849         l3fwd_lookup_struct[socketid] =
 850                         rte_lpm_create(s, socketid, &lpm_ipv4_config);
 851         if (l3fwd_lookup_struct[socketid] == NULL)
 852                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
 853                                 " on socket %d\n", socketid);
 854
 855         /* populate the LPM table */
 856         for (i = 0; i < L3FWD_NUM_ROUTES; i++) {
 857                 ret = rte_lpm_add(l3fwd_lookup_struct[socketid],
 858                         l3fwd_route_array[i].ip,
 859                         l3fwd_route_array[i].depth,
 860                         l3fwd_route_array[i].if_out);
 861
 862                 if (ret < 0) {
 863                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the "
 864                                 "l3fwd LPM table on socket %d\n",
 865                                 i, socketid);
 866                 }
 867
 868                 printf("LPM: Adding route 0x%08x / %d (%d)\n",
 869                         (unsigned)l3fwd_route_array[i].ip,
 870                         l3fwd_route_array[i].depth,
 871                         l3fwd_route_array[i].if_out);
 872         }
 873 }
 874 #endif
 875
 876 static int
 877 init_mem(unsigned nb_mbuf)
 878 {
 879         struct lcore_conf *qconf;
 880         int socketid;
 881         unsigned lcore_id;
 882         char s[64];
 883
 884         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 885                 if (rte_lcore_is_enabled(lcore_id) == 0)
 886                         continue;
 887
 888                 if (numa_on)
 889                         socketid = rte_lcore_to_socket_id(lcore_id);
 890                 else
 891                         socketid = 0;
 892
 893                 if (socketid >= NB_SOCKETS) {
 894                         rte_exit(EXIT_FAILURE, "Socket %d of lcore %u is out of range %d\n",
 895                                 socketid, lcore_id, NB_SOCKETS);
 896                 }
 897                 if (pktmbuf_pool[socketid] == NULL) {
 898                         snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
 899                         pktmbuf_pool[socketid] = rte_pktmbuf_pool_create(s,
 900                                 nb_mbuf, MEMPOOL_CACHE_SIZE, 0,
 901                                 RTE_MBUF_DEFAULT_BUF_SIZE, socketid);
 902                         if (pktmbuf_pool[socketid] == NULL)
 903                                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool on socket %d\n", socketid);
 904                         else
 905                                 printf("Allocated mbuf pool on socket %d\n", socketid);
 906
 907 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 908                         setup_lpm(socketid);
 909 #else
 910                         setup_hash(socketid);
 911 #endif
 912                 }
 913                 qconf = &lcore_conf[lcore_id];
 914                 qconf->lookup_struct = l3fwd_lookup_struct[socketid];
 915         }
 916         return 0;
 917 }
 918
 919 int
 920 main(int argc, char **argv)
 921 {
 922         struct lcore_conf *qconf;
 923         struct rte_eth_dev_info dev_info;
 924         struct rte_eth_txconf *txconf;
 925         int ret;
 926         unsigned nb_ports;
 927         uint16_t queueid, portid;
 928         unsigned lcore_id;
 929         uint32_t nb_lcores;
 930         uint16_t n_tx_queue;
 931         uint8_t nb_rx_queue, queue, socketid;
 932
 933         signal(SIGINT, signal_handler);
 934         /* init EAL */
 935         ret = rte_eal_init(argc, argv);
 936         if (ret < 0)
 937                 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
 938         argc -= ret;
 939         argv += ret;
 940
 941         /* parse application arguments (after the EAL ones) */
 942         ret = parse_args(argc, argv);
 943         if (ret < 0)
 944                 rte_exit(EXIT_FAILURE, "Invalid L3FWD-VF parameters\n");
 945
 946         if (check_lcore_params() < 0)
 947                 rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");
 948
 949         ret = init_lcore_rx_queues();
 950         if (ret < 0)
 951                 rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");
 952
 953         nb_ports = rte_eth_dev_count();
 954
 955         if (check_port_config(nb_ports) < 0)
 956                 rte_exit(EXIT_FAILURE, "check_port_config failed\n");
 957
 958         nb_lcores = rte_lcore_count();
 959
 960         /* initialize all ports */
 961         for (portid = 0; portid < nb_ports; portid++) {
 962                 struct rte_eth_conf local_port_conf = port_conf;
 963
 964                 /* skip ports that are not enabled */
 965                 if ((enabled_port_mask & (1 << portid)) == 0) {
 966                         printf("\nSkipping disabled port %d\n", portid);
 967                         continue;
 968                 }
 969
 970                 /* init port */
 971                 printf("Initializing port %d ... ", portid );
 972                 fflush(stdout);
 973
 974                 /* must always equal(=1) */
 975                 nb_rx_queue = get_port_n_rx_queues(portid);
 976                 n_tx_queue = MAX_TX_QUEUE_PER_PORT;
 977
 978                 printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
 979                         nb_rx_queue, (unsigned)1 );
 980
 981                 rte_eth_dev_info_get(portid, &dev_info);
 982                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 983                         local_port_conf.txmode.offloads |=
 984                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 985                 ret = rte_eth_dev_configure(portid, nb_rx_queue,
 986                                             n_tx_queue, &local_port_conf);
 987                 if (ret < 0)
 988                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%d\n",
 989                                 ret, portid);
 990
 991                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 992                                                        &nb_txd);
 993                 if (ret < 0)
 994                         rte_exit(EXIT_FAILURE,
 995                                  "Cannot adjust number of descriptors: err=%d, port=%d\n",
 996                                  ret, portid);
 997
 998                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
 999                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
1000                 printf(", ");
1001
1002                 ret = init_mem(NB_MBUF);
1003                 if (ret < 0)
1004                         rte_exit(EXIT_FAILURE, "init_mem failed\n");
1005
1006                 /* init one TX queue */
1007                 socketid = (uint8_t)rte_lcore_to_socket_id(rte_get_master_lcore());
1008
1009                 printf("txq=%d,%d,%d ", portid, 0, socketid);
1010                 fflush(stdout);
1011
1012                 txconf = &dev_info.default_txconf;
1013                 txconf->txq_flags = ETH_TXQ_FLAGS_IGNORE;
1014                 txconf->offloads = local_port_conf.txmode.offloads;
1015                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
1016                                                  socketid, txconf);
1017                 if (ret < 0)
1018                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
1019                                 "port=%d\n", ret, portid);
1020
1021                 printf("\n");
1022         }
1023
1024         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1025                 struct rte_eth_rxconf rxq_conf;
1026
1027                 if (rte_lcore_is_enabled(lcore_id) == 0)
1028                         continue;
1029                 qconf = &lcore_conf[lcore_id];
1030                 qconf->tx_queue_id = 0;
1031
1032                 printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
1033                 fflush(stdout);
1034                 /* init RX queues */
1035                 for(queue = 0; queue < qconf->n_rx_queue; ++queue) {
1036                         struct rte_eth_dev *dev;
1037                         struct rte_eth_conf *conf;
1038
1039                         portid = qconf->rx_queue_list[queue].port_id;
1040                         queueid = qconf->rx_queue_list[queue].queue_id;
1041                         dev = &rte_eth_devices[portid];
1042                         conf = &dev->data->dev_conf;
1043
1044                         if (numa_on)
1045                                 socketid = (uint8_t)rte_lcore_to_socket_id(lcore_id);
1046                         else
1047                                 socketid = 0;
1048
1049                         printf("rxq=%d,%d,%d ", portid, queueid, socketid);
1050                         fflush(stdout);
1051
1052                         rte_eth_dev_info_get(portid, &dev_info);
1053                         rxq_conf = dev_info.default_rxconf;
1054                         rxq_conf.offloads = conf->rxmode.offloads;
1055                         ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
1056                                                 socketid, &rxq_conf,
1057                                                 pktmbuf_pool[socketid]);
1058                         if (ret < 0)
1059                                 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d,"
1060                                                 "port=%d\n", ret, portid);
1061                 }
1062         }
1063         printf("\n");
1064
1065         /* start ports */
1066         for (portid = 0; portid < nb_ports; portid++) {
1067                 if ((enabled_port_mask & (1 << portid)) == 0) {
1068                         continue;
1069                 }
1070                 /* Start device */
1071                 ret = rte_eth_dev_start(portid);
1072                 if (ret < 0)
1073                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
1074                                 ret, portid);
1075
1076                 printf("done: Port %d\n", portid);
1077
1078         }
1079
1080         /* launch per-lcore init on every lcore */
1081         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1082         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1083                 if (rte_eal_wait_lcore(lcore_id) < 0)
1084                         return -1;
1085         }
1086
1087         return 0;
1088 }