examples/l3fwd-power/main.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2016 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 <unistd.h>
  45 #include <signal.h>
  46
  47 #include <rte_common.h>
  48 #include <rte_byteorder.h>
  49 #include <rte_log.h>
  50 #include <rte_malloc.h>
  51 #include <rte_memory.h>
  52 #include <rte_memcpy.h>
  53 #include <rte_memzone.h>
  54 #include <rte_eal.h>
  55 #include <rte_per_lcore.h>
  56 #include <rte_launch.h>
  57 #include <rte_atomic.h>
  58 #include <rte_cycles.h>
  59 #include <rte_prefetch.h>
  60 #include <rte_lcore.h>
  61 #include <rte_per_lcore.h>
  62 #include <rte_branch_prediction.h>
  63 #include <rte_interrupts.h>
  64 #include <rte_pci.h>
  65 #include <rte_random.h>
  66 #include <rte_debug.h>
  67 #include <rte_ether.h>
  68 #include <rte_ethdev.h>
  69 #include <rte_mempool.h>
  70 #include <rte_mbuf.h>
  71 #include <rte_ip.h>
  72 #include <rte_tcp.h>
  73 #include <rte_udp.h>
  74 #include <rte_string_fns.h>
  75 #include <rte_timer.h>
  76 #include <rte_power.h>
  77 #include <rte_eal.h>
  78 #include <rte_spinlock.h>
  79
  80 #define RTE_LOGTYPE_L3FWD_POWER RTE_LOGTYPE_USER1
  81
  82 #define MAX_PKT_BURST 32
  83
  84 #define MIN_ZERO_POLL_COUNT 10
  85
  86 /* around 100ms at 2 Ghz */
  87 #define TIMER_RESOLUTION_CYCLES           200000000ULL
  88 /* 100 ms interval */
  89 #define TIMER_NUMBER_PER_SECOND           10
  90 /* 100000 us */
  91 #define SCALING_PERIOD                    (1000000/TIMER_NUMBER_PER_SECOND)
  92 #define SCALING_DOWN_TIME_RATIO_THRESHOLD 0.25
  93
  94 #define APP_LOOKUP_EXACT_MATCH          0
  95 #define APP_LOOKUP_LPM                  1
  96 #define DO_RFC_1812_CHECKS
  97
  98 #ifndef APP_LOOKUP_METHOD
  99 #define APP_LOOKUP_METHOD             APP_LOOKUP_LPM
 100 #endif
 101
 102 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 103 #include <rte_hash.h>
 104 #elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 105 #include <rte_lpm.h>
 106 #else
 107 #error "APP_LOOKUP_METHOD set to incorrect value"
 108 #endif
 109
 110 #ifndef IPv6_BYTES
 111 #define IPv6_BYTES_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"\
 112                        "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
 113 #define IPv6_BYTES(addr) \
 114         addr[0],  addr[1], addr[2],  addr[3], \
 115         addr[4],  addr[5], addr[6],  addr[7], \
 116         addr[8],  addr[9], addr[10], addr[11],\
 117         addr[12], addr[13],addr[14], addr[15]
 118 #endif
 119
 120 #define MAX_JUMBO_PKT_LEN  9600
 121
 122 #define IPV6_ADDR_LEN 16
 123
 124 #define MEMPOOL_CACHE_SIZE 256
 125
 126 /*
 127  * This expression is used to calculate the number of mbufs needed depending on
 128  * user input, taking into account memory for rx and tx hardware rings, cache
 129  * per lcore and mtable per port per lcore. RTE_MAX is used to ensure that
 130  * NB_MBUF never goes below a minimum value of 8192.
 131  */
 132
 133 #define NB_MBUF RTE_MAX ( \
 134         (nb_ports*nb_rx_queue*RTE_TEST_RX_DESC_DEFAULT + \
 135         nb_ports*nb_lcores*MAX_PKT_BURST + \
 136         nb_ports*n_tx_queue*RTE_TEST_TX_DESC_DEFAULT + \
 137         nb_lcores*MEMPOOL_CACHE_SIZE), \
 138         (unsigned)8192)
 139
 140 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 141
 142 #define NB_SOCKETS 8
 143
 144 /* Configure how many packets ahead to prefetch, when reading packets */
 145 #define PREFETCH_OFFSET 3
 146
 147 /*
 148  * Configurable number of RX/TX ring descriptors
 149  */
 150 #define RTE_TEST_RX_DESC_DEFAULT 128
 151 #define RTE_TEST_TX_DESC_DEFAULT 512
 152 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
 153 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
 154
 155 /* ethernet addresses of ports */
 156 static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
 157
 158 /* ethernet addresses of ports */
 159 static rte_spinlock_t locks[RTE_MAX_ETHPORTS];
 160
 161 /* mask of enabled ports */
 162 static uint32_t enabled_port_mask = 0;
 163 /* Ports set in promiscuous mode off by default. */
 164 static int promiscuous_on = 0;
 165 /* NUMA is enabled by default. */
 166 static int numa_on = 1;
 167
 168 enum freq_scale_hint_t
 169 {
 170         FREQ_LOWER    =      -1,
 171         FREQ_CURRENT  =       0,
 172         FREQ_HIGHER   =       1,
 173         FREQ_HIGHEST  =       2
 174 };
 175
 176 struct lcore_rx_queue {
 177         uint8_t port_id;
 178         uint8_t queue_id;
 179         enum freq_scale_hint_t freq_up_hint;
 180         uint32_t zero_rx_packet_count;
 181         uint32_t idle_hint;
 182 } __rte_cache_aligned;
 183
 184 #define MAX_RX_QUEUE_PER_LCORE 16
 185 #define MAX_TX_QUEUE_PER_PORT RTE_MAX_ETHPORTS
 186 #define MAX_RX_QUEUE_PER_PORT 128
 187
 188 #define MAX_RX_QUEUE_INTERRUPT_PER_PORT 16
 189
 190
 191 #define MAX_LCORE_PARAMS 1024
 192 struct lcore_params {
 193         uint8_t port_id;
 194         uint8_t queue_id;
 195         uint8_t lcore_id;
 196 } __rte_cache_aligned;
 197
 198 static struct lcore_params lcore_params_array[MAX_LCORE_PARAMS];
 199 static struct lcore_params lcore_params_array_default[] = {
 200         {0, 0, 2},
 201         {0, 1, 2},
 202         {0, 2, 2},
 203         {1, 0, 2},
 204         {1, 1, 2},
 205         {1, 2, 2},
 206         {2, 0, 2},
 207         {3, 0, 3},
 208         {3, 1, 3},
 209 };
 210
 211 static struct lcore_params * lcore_params = lcore_params_array_default;
 212 static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
 213                                 sizeof(lcore_params_array_default[0]);
 214
 215 static struct rte_eth_conf port_conf = {
 216         .rxmode = {
 217                 .mq_mode        = ETH_MQ_RX_RSS,
 218                 .max_rx_pkt_len = ETHER_MAX_LEN,
 219                 .split_hdr_size = 0,
 220                 .header_split   = 0, /**< Header Split disabled */
 221                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
 222                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 223                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 224                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
 225         },
 226         .rx_adv_conf = {
 227                 .rss_conf = {
 228                         .rss_key = NULL,
 229                         .rss_hf = ETH_RSS_UDP,
 230                 },
 231         },
 232         .txmode = {
 233                 .mq_mode = ETH_MQ_TX_NONE,
 234         },
 235         .intr_conf = {
 236                 .lsc = 1,
 237                 .rxq = 1,
 238         },
 239 };
 240
 241 static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 242
 243
 244 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 245
 246 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
 247 #include <rte_hash_crc.h>
 248 #define DEFAULT_HASH_FUNC       rte_hash_crc
 249 #else
 250 #include <rte_jhash.h>
 251 #define DEFAULT_HASH_FUNC       rte_jhash
 252 #endif
 253
 254 struct ipv4_5tuple {
 255         uint32_t ip_dst;
 256         uint32_t ip_src;
 257         uint16_t port_dst;
 258         uint16_t port_src;
 259         uint8_t  proto;
 260 } __attribute__((__packed__));
 261
 262 struct ipv6_5tuple {
 263         uint8_t  ip_dst[IPV6_ADDR_LEN];
 264         uint8_t  ip_src[IPV6_ADDR_LEN];
 265         uint16_t port_dst;
 266         uint16_t port_src;
 267         uint8_t  proto;
 268 } __attribute__((__packed__));
 269
 270 struct ipv4_l3fwd_route {
 271         struct ipv4_5tuple key;
 272         uint8_t if_out;
 273 };
 274
 275 struct ipv6_l3fwd_route {
 276         struct ipv6_5tuple key;
 277         uint8_t if_out;
 278 };
 279
 280 static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
 281         {{IPv4(100,10,0,1), IPv4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0},
 282         {{IPv4(100,20,0,2), IPv4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1},
 283         {{IPv4(100,30,0,3), IPv4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2},
 284         {{IPv4(100,40,0,4), IPv4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3},
 285 };
 286
 287 static struct ipv6_l3fwd_route ipv6_l3fwd_route_array[] = {
 288         {
 289                 {
 290                         {0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 291                          0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
 292                         {0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 293                          0x02, 0x1e, 0x67, 0xff, 0xfe, 0x0d, 0xb6, 0x0a},
 294                          1, 10, IPPROTO_UDP
 295                 }, 4
 296         },
 297 };
 298
 299 typedef struct rte_hash lookup_struct_t;
 300 static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
 301 static lookup_struct_t *ipv6_l3fwd_lookup_struct[NB_SOCKETS];
 302
 303 #define L3FWD_HASH_ENTRIES      1024
 304
 305 #define IPV4_L3FWD_NUM_ROUTES \
 306         (sizeof(ipv4_l3fwd_route_array) / sizeof(ipv4_l3fwd_route_array[0]))
 307
 308 #define IPV6_L3FWD_NUM_ROUTES \
 309         (sizeof(ipv6_l3fwd_route_array) / sizeof(ipv6_l3fwd_route_array[0]))
 310
 311 static uint8_t ipv4_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 312 static uint8_t ipv6_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 313 #endif
 314
 315 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 316 struct ipv4_l3fwd_route {
 317         uint32_t ip;
 318         uint8_t  depth;
 319         uint8_t  if_out;
 320 };
 321
 322 static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
 323         {IPv4(1,1,1,0), 24, 0},
 324         {IPv4(2,1,1,0), 24, 1},
 325         {IPv4(3,1,1,0), 24, 2},
 326         {IPv4(4,1,1,0), 24, 3},
 327         {IPv4(5,1,1,0), 24, 4},
 328         {IPv4(6,1,1,0), 24, 5},
 329         {IPv4(7,1,1,0), 24, 6},
 330         {IPv4(8,1,1,0), 24, 7},
 331 };
 332
 333 #define IPV4_L3FWD_NUM_ROUTES \
 334         (sizeof(ipv4_l3fwd_route_array) / sizeof(ipv4_l3fwd_route_array[0]))
 335
 336 #define IPV4_L3FWD_LPM_MAX_RULES     1024
 337
 338 typedef struct rte_lpm lookup_struct_t;
 339 static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
 340 #endif
 341
 342 struct lcore_conf {
 343         uint16_t n_rx_queue;
 344         struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 345         uint16_t n_tx_port;
 346         uint16_t tx_port_id[RTE_MAX_ETHPORTS];
 347         uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
 348         struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
 349         lookup_struct_t * ipv4_lookup_struct;
 350         lookup_struct_t * ipv6_lookup_struct;
 351 } __rte_cache_aligned;
 352
 353 struct lcore_stats {
 354         /* total sleep time in ms since last frequency scaling down */
 355         uint32_t sleep_time;
 356         /* number of long sleep recently */
 357         uint32_t nb_long_sleep;
 358         /* freq. scaling up trend */
 359         uint32_t trend;
 360         /* total packet processed recently */
 361         uint64_t nb_rx_processed;
 362         /* total iterations looped recently */
 363         uint64_t nb_iteration_looped;
 364         uint32_t padding[9];
 365 } __rte_cache_aligned;
 366
 367 static struct lcore_conf lcore_conf[RTE_MAX_LCORE] __rte_cache_aligned;
 368 static struct lcore_stats stats[RTE_MAX_LCORE] __rte_cache_aligned;
 369 static struct rte_timer power_timers[RTE_MAX_LCORE];
 370
 371 static inline uint32_t power_idle_heuristic(uint32_t zero_rx_packet_count);
 372 static inline enum freq_scale_hint_t power_freq_scaleup_heuristic( \
 373                         unsigned lcore_id, uint8_t port_id, uint16_t queue_id);
 374
 375 /* exit signal handler */
 376 static void
 377 signal_exit_now(int sigtype)
 378 {
 379         unsigned lcore_id;
 380         int ret;
 381
 382         if (sigtype == SIGINT) {
 383                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 384                         if (rte_lcore_is_enabled(lcore_id) == 0)
 385                                 continue;
 386
 387                         /* init power management library */
 388                         ret = rte_power_exit(lcore_id);
 389                         if (ret)
 390                                 rte_exit(EXIT_FAILURE, "Power management "
 391                                         "library de-initialization failed on "
 392                                                         "core%u\n", lcore_id);
 393                 }
 394         }
 395
 396         rte_exit(EXIT_SUCCESS, "User forced exit\n");
 397 }
 398
 399 /*  Freqency scale down timer callback */
 400 static void
 401 power_timer_cb(__attribute__((unused)) struct rte_timer *tim,
 402                           __attribute__((unused)) void *arg)
 403 {
 404         uint64_t hz;
 405         float sleep_time_ratio;
 406         unsigned lcore_id = rte_lcore_id();
 407
 408         /* accumulate total execution time in us when callback is invoked */
 409         sleep_time_ratio = (float)(stats[lcore_id].sleep_time) /
 410                                         (float)SCALING_PERIOD;
 411         /**
 412          * check whether need to scale down frequency a step if it sleep a lot.
 413          */
 414         if (sleep_time_ratio >= SCALING_DOWN_TIME_RATIO_THRESHOLD) {
 415                 if (rte_power_freq_down)
 416                         rte_power_freq_down(lcore_id);
 417         }
 418         else if ( (unsigned)(stats[lcore_id].nb_rx_processed /
 419                 stats[lcore_id].nb_iteration_looped) < MAX_PKT_BURST) {
 420                 /**
 421                  * scale down a step if average packet per iteration less
 422                  * than expectation.
 423                  */
 424                 if (rte_power_freq_down)
 425                         rte_power_freq_down(lcore_id);
 426         }
 427
 428         /**
 429          * initialize another timer according to current frequency to ensure
 430          * timer interval is relatively fixed.
 431          */
 432         hz = rte_get_timer_hz();
 433         rte_timer_reset(&power_timers[lcore_id], hz/TIMER_NUMBER_PER_SECOND,
 434                                 SINGLE, lcore_id, power_timer_cb, NULL);
 435
 436         stats[lcore_id].nb_rx_processed = 0;
 437         stats[lcore_id].nb_iteration_looped = 0;
 438
 439         stats[lcore_id].sleep_time = 0;
 440 }
 441
 442 /* Enqueue a single packet, and send burst if queue is filled */
 443 static inline int
 444 send_single_packet(struct rte_mbuf *m, uint8_t port)
 445 {
 446         uint32_t lcore_id;
 447         struct lcore_conf *qconf;
 448
 449         lcore_id = rte_lcore_id();
 450         qconf = &lcore_conf[lcore_id];
 451
 452         rte_eth_tx_buffer(port, qconf->tx_queue_id[port],
 453                         qconf->tx_buffer[port], m);
 454
 455         return 0;
 456 }
 457
 458 #ifdef DO_RFC_1812_CHECKS
 459 static inline int
 460 is_valid_ipv4_pkt(struct ipv4_hdr *pkt, uint32_t link_len)
 461 {
 462         /* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */
 463         /*
 464          * 1. The packet length reported by the Link Layer must be large
 465          * enough to hold the minimum length legal IP datagram (20 bytes).
 466          */
 467         if (link_len < sizeof(struct ipv4_hdr))
 468                 return -1;
 469
 470         /* 2. The IP checksum must be correct. */
 471         /* this is checked in H/W */
 472
 473         /*
 474          * 3. The IP version number must be 4. If the version number is not 4
 475          * then the packet may be another version of IP, such as IPng or
 476          * ST-II.
 477          */
 478         if (((pkt->version_ihl) >> 4) != 4)
 479                 return -3;
 480         /*
 481          * 4. The IP header length field must be large enough to hold the
 482          * minimum length legal IP datagram (20 bytes = 5 words).
 483          */
 484         if ((pkt->version_ihl & 0xf) < 5)
 485                 return -4;
 486
 487         /*
 488          * 5. The IP total length field must be large enough to hold the IP
 489          * datagram header, whose length is specified in the IP header length
 490          * field.
 491          */
 492         if (rte_cpu_to_be_16(pkt->total_length) < sizeof(struct ipv4_hdr))
 493                 return -5;
 494
 495         return 0;
 496 }
 497 #endif
 498
 499 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 500 static void
 501 print_ipv4_key(struct ipv4_5tuple key)
 502 {
 503         printf("IP dst = %08x, IP src = %08x, port dst = %d, port src = %d, "
 504                 "proto = %d\n", (unsigned)key.ip_dst, (unsigned)key.ip_src,
 505                                 key.port_dst, key.port_src, key.proto);
 506 }
 507 static void
 508 print_ipv6_key(struct ipv6_5tuple key)
 509 {
 510         printf( "IP dst = " IPv6_BYTES_FMT ", IP src = " IPv6_BYTES_FMT ", "
 511                 "port dst = %d, port src = %d, proto = %d\n",
 512                 IPv6_BYTES(key.ip_dst), IPv6_BYTES(key.ip_src),
 513                 key.port_dst, key.port_src, key.proto);
 514 }
 515
 516 static inline uint8_t
 517 get_ipv4_dst_port(struct ipv4_hdr *ipv4_hdr, uint8_t portid,
 518                 lookup_struct_t * ipv4_l3fwd_lookup_struct)
 519 {
 520         struct ipv4_5tuple key;
 521         struct tcp_hdr *tcp;
 522         struct udp_hdr *udp;
 523         int ret = 0;
 524
 525         key.ip_dst = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
 526         key.ip_src = rte_be_to_cpu_32(ipv4_hdr->src_addr);
 527         key.proto = ipv4_hdr->next_proto_id;
 528
 529         switch (ipv4_hdr->next_proto_id) {
 530         case IPPROTO_TCP:
 531                 tcp = (struct tcp_hdr *)((unsigned char *)ipv4_hdr +
 532                                         sizeof(struct ipv4_hdr));
 533                 key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
 534                 key.port_src = rte_be_to_cpu_16(tcp->src_port);
 535                 break;
 536
 537         case IPPROTO_UDP:
 538                 udp = (struct udp_hdr *)((unsigned char *)ipv4_hdr +
 539                                         sizeof(struct ipv4_hdr));
 540                 key.port_dst = rte_be_to_cpu_16(udp->dst_port);
 541                 key.port_src = rte_be_to_cpu_16(udp->src_port);
 542                 break;
 543
 544         default:
 545                 key.port_dst = 0;
 546                 key.port_src = 0;
 547                 break;
 548         }
 549
 550         /* Find destination port */
 551         ret = rte_hash_lookup(ipv4_l3fwd_lookup_struct, (const void *)&key);
 552         return (uint8_t)((ret < 0)? portid : ipv4_l3fwd_out_if[ret]);
 553 }
 554
 555 static inline uint8_t
 556 get_ipv6_dst_port(struct ipv6_hdr *ipv6_hdr,  uint8_t portid,
 557                         lookup_struct_t *ipv6_l3fwd_lookup_struct)
 558 {
 559         struct ipv6_5tuple key;
 560         struct tcp_hdr *tcp;
 561         struct udp_hdr *udp;
 562         int ret = 0;
 563
 564         memcpy(key.ip_dst, ipv6_hdr->dst_addr, IPV6_ADDR_LEN);
 565         memcpy(key.ip_src, ipv6_hdr->src_addr, IPV6_ADDR_LEN);
 566
 567         key.proto = ipv6_hdr->proto;
 568
 569         switch (ipv6_hdr->proto) {
 570         case IPPROTO_TCP:
 571                 tcp = (struct tcp_hdr *)((unsigned char *) ipv6_hdr +
 572                                         sizeof(struct ipv6_hdr));
 573                 key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
 574                 key.port_src = rte_be_to_cpu_16(tcp->src_port);
 575                 break;
 576
 577         case IPPROTO_UDP:
 578                 udp = (struct udp_hdr *)((unsigned char *) ipv6_hdr +
 579                                         sizeof(struct ipv6_hdr));
 580                 key.port_dst = rte_be_to_cpu_16(udp->dst_port);
 581                 key.port_src = rte_be_to_cpu_16(udp->src_port);
 582                 break;
 583
 584         default:
 585                 key.port_dst = 0;
 586                 key.port_src = 0;
 587                 break;
 588         }
 589
 590         /* Find destination port */
 591         ret = rte_hash_lookup(ipv6_l3fwd_lookup_struct, (const void *)&key);
 592         return (uint8_t)((ret < 0)? portid : ipv6_l3fwd_out_if[ret]);
 593 }
 594 #endif
 595
 596 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 597 static inline uint8_t
 598 get_ipv4_dst_port(struct ipv4_hdr *ipv4_hdr, uint8_t portid,
 599                 lookup_struct_t *ipv4_l3fwd_lookup_struct)
 600 {
 601         uint32_t next_hop;
 602
 603         return (uint8_t) ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct,
 604                         rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0)?
 605                         next_hop : portid);
 606 }
 607 #endif
 608
 609 static inline void
 610 l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid,
 611                                 struct lcore_conf *qconf)
 612 {
 613         struct ether_hdr *eth_hdr;
 614         struct ipv4_hdr *ipv4_hdr;
 615         void *d_addr_bytes;
 616         uint8_t dst_port;
 617
 618         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 619
 620         if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
 621                 /* Handle IPv4 headers.*/
 622                 ipv4_hdr =
 623                         rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
 624                                                 sizeof(struct ether_hdr));
 625
 626 #ifdef DO_RFC_1812_CHECKS
 627                 /* Check to make sure the packet is valid (RFC1812) */
 628                 if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
 629                         rte_pktmbuf_free(m);
 630                         return;
 631                 }
 632 #endif
 633
 634                 dst_port = get_ipv4_dst_port(ipv4_hdr, portid,
 635                                         qconf->ipv4_lookup_struct);
 636                 if (dst_port >= RTE_MAX_ETHPORTS ||
 637                                 (enabled_port_mask & 1 << dst_port) == 0)
 638                         dst_port = portid;
 639
 640                 /* 02:00:00:00:00:xx */
 641                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 642                 *((uint64_t *)d_addr_bytes) =
 643                         0x000000000002 + ((uint64_t)dst_port << 40);
 644
 645 #ifdef DO_RFC_1812_CHECKS
 646                 /* Update time to live and header checksum */
 647                 --(ipv4_hdr->time_to_live);
 648                 ++(ipv4_hdr->hdr_checksum);
 649 #endif
 650
 651                 /* src addr */
 652                 ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 653
 654                 send_single_packet(m, dst_port);
 655         } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
 656                 /* Handle IPv6 headers.*/
 657 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 658                 struct ipv6_hdr *ipv6_hdr;
 659
 660                 ipv6_hdr =
 661                         rte_pktmbuf_mtod_offset(m, struct ipv6_hdr *,
 662                                                 sizeof(struct ether_hdr));
 663
 664                 dst_port = get_ipv6_dst_port(ipv6_hdr, portid,
 665                                         qconf->ipv6_lookup_struct);
 666
 667                 if (dst_port >= RTE_MAX_ETHPORTS ||
 668                                 (enabled_port_mask & 1 << dst_port) == 0)
 669                         dst_port = portid;
 670
 671                 /* 02:00:00:00:00:xx */
 672                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 673                 *((uint64_t *)d_addr_bytes) =
 674                         0x000000000002 + ((uint64_t)dst_port << 40);
 675
 676                 /* src addr */
 677                 ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 678
 679                 send_single_packet(m, dst_port);
 680 #else
 681                 /* We don't currently handle IPv6 packets in LPM mode. */
 682                 rte_pktmbuf_free(m);
 683 #endif
 684         } else
 685                 rte_pktmbuf_free(m);
 686
 687 }
 688
 689 #define MINIMUM_SLEEP_TIME         1
 690 #define SUSPEND_THRESHOLD          300
 691
 692 static inline uint32_t
 693 power_idle_heuristic(uint32_t zero_rx_packet_count)
 694 {
 695         /* If zero count is less than 100,  sleep 1us */
 696         if (zero_rx_packet_count < SUSPEND_THRESHOLD)
 697                 return MINIMUM_SLEEP_TIME;
 698         /* If zero count is less than 1000, sleep 100 us which is the
 699                 minimum latency switching from C3/C6 to C0
 700         */
 701         else
 702                 return SUSPEND_THRESHOLD;
 703
 704         return 0;
 705 }
 706
 707 static inline enum freq_scale_hint_t
 708 power_freq_scaleup_heuristic(unsigned lcore_id,
 709                              uint8_t port_id,
 710                              uint16_t queue_id)
 711 {
 712 /**
 713  * HW Rx queue size is 128 by default, Rx burst read at maximum 32 entries
 714  * per iteration
 715  */
 716 #define FREQ_GEAR1_RX_PACKET_THRESHOLD             MAX_PKT_BURST
 717 #define FREQ_GEAR2_RX_PACKET_THRESHOLD             (MAX_PKT_BURST*2)
 718 #define FREQ_GEAR3_RX_PACKET_THRESHOLD             (MAX_PKT_BURST*3)
 719 #define FREQ_UP_TREND1_ACC   1
 720 #define FREQ_UP_TREND2_ACC   100
 721 #define FREQ_UP_THRESHOLD    10000
 722
 723         if (likely(rte_eth_rx_descriptor_done(port_id, queue_id,
 724                         FREQ_GEAR3_RX_PACKET_THRESHOLD) > 0)) {
 725                 stats[lcore_id].trend = 0;
 726                 return FREQ_HIGHEST;
 727         } else if (likely(rte_eth_rx_descriptor_done(port_id, queue_id,
 728                         FREQ_GEAR2_RX_PACKET_THRESHOLD) > 0))
 729                 stats[lcore_id].trend += FREQ_UP_TREND2_ACC;
 730         else if (likely(rte_eth_rx_descriptor_done(port_id, queue_id,
 731                         FREQ_GEAR1_RX_PACKET_THRESHOLD) > 0))
 732                 stats[lcore_id].trend += FREQ_UP_TREND1_ACC;
 733
 734         if (likely(stats[lcore_id].trend > FREQ_UP_THRESHOLD)) {
 735                 stats[lcore_id].trend = 0;
 736                 return FREQ_HIGHER;
 737         }
 738
 739         return FREQ_CURRENT;
 740 }
 741
 742 /**
 743  * force polling thread sleep until one-shot rx interrupt triggers
 744  * @param port_id
 745  *  Port id.
 746  * @param queue_id
 747  *  Rx queue id.
 748  * @return
 749  *  0 on success
 750  */
 751 static int
 752 sleep_until_rx_interrupt(int num)
 753 {
 754         struct rte_epoll_event event[num];
 755         int n, i;
 756         uint8_t port_id, queue_id;
 757         void *data;
 758
 759         RTE_LOG(INFO, L3FWD_POWER,
 760                 "lcore %u sleeps until interrupt triggers\n",
 761                 rte_lcore_id());
 762
 763         n = rte_epoll_wait(RTE_EPOLL_PER_THREAD, event, num, -1);
 764         for (i = 0; i < n; i++) {
 765                 data = event[i].epdata.data;
 766                 port_id = ((uintptr_t)data) >> CHAR_BIT;
 767                 queue_id = ((uintptr_t)data) &
 768                         RTE_LEN2MASK(CHAR_BIT, uint8_t);
 769                 rte_eth_dev_rx_intr_disable(port_id, queue_id);
 770                 RTE_LOG(INFO, L3FWD_POWER,
 771                         "lcore %u is waked up from rx interrupt on"
 772                         " port %d queue %d\n",
 773                         rte_lcore_id(), port_id, queue_id);
 774         }
 775
 776         return 0;
 777 }
 778
 779 static void turn_on_intr(struct lcore_conf *qconf)
 780 {
 781         int i;
 782         struct lcore_rx_queue *rx_queue;
 783         uint8_t port_id, queue_id;
 784
 785         for (i = 0; i < qconf->n_rx_queue; ++i) {
 786                 rx_queue = &(qconf->rx_queue_list[i]);
 787                 port_id = rx_queue->port_id;
 788                 queue_id = rx_queue->queue_id;
 789
 790                 rte_spinlock_lock(&(locks[port_id]));
 791                 rte_eth_dev_rx_intr_enable(port_id, queue_id);
 792                 rte_spinlock_unlock(&(locks[port_id]));
 793         }
 794 }
 795
 796 static int event_register(struct lcore_conf *qconf)
 797 {
 798         struct lcore_rx_queue *rx_queue;
 799         uint8_t portid, queueid;
 800         uint32_t data;
 801         int ret;
 802         int i;
 803
 804         for (i = 0; i < qconf->n_rx_queue; ++i) {
 805                 rx_queue = &(qconf->rx_queue_list[i]);
 806                 portid = rx_queue->port_id;
 807                 queueid = rx_queue->queue_id;
 808                 data = portid << CHAR_BIT | queueid;
 809
 810                 ret = rte_eth_dev_rx_intr_ctl_q(portid, queueid,
 811                                                 RTE_EPOLL_PER_THREAD,
 812                                                 RTE_INTR_EVENT_ADD,
 813                                                 (void *)((uintptr_t)data));
 814                 if (ret)
 815                         return ret;
 816         }
 817
 818         return 0;
 819 }
 820
 821 /* main processing loop */
 822 static int
 823 main_loop(__attribute__((unused)) void *dummy)
 824 {
 825         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 826         unsigned lcore_id;
 827         uint64_t prev_tsc, diff_tsc, cur_tsc;
 828         uint64_t prev_tsc_power = 0, cur_tsc_power, diff_tsc_power;
 829         int i, j, nb_rx;
 830         uint8_t portid, queueid;
 831         struct lcore_conf *qconf;
 832         struct lcore_rx_queue *rx_queue;
 833         enum freq_scale_hint_t lcore_scaleup_hint;
 834         uint32_t lcore_rx_idle_count = 0;
 835         uint32_t lcore_idle_hint = 0;
 836         int intr_en = 0;
 837
 838         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 839
 840         prev_tsc = 0;
 841
 842         lcore_id = rte_lcore_id();
 843         qconf = &lcore_conf[lcore_id];
 844
 845         if (qconf->n_rx_queue == 0) {
 846                 RTE_LOG(INFO, L3FWD_POWER, "lcore %u has nothing to do\n", lcore_id);
 847                 return 0;
 848         }
 849
 850         RTE_LOG(INFO, L3FWD_POWER, "entering main loop on lcore %u\n", lcore_id);
 851
 852         for (i = 0; i < qconf->n_rx_queue; i++) {
 853                 portid = qconf->rx_queue_list[i].port_id;
 854                 queueid = qconf->rx_queue_list[i].queue_id;
 855                 RTE_LOG(INFO, L3FWD_POWER, " -- lcoreid=%u portid=%hhu "
 856                         "rxqueueid=%hhu\n", lcore_id, portid, queueid);
 857         }
 858
 859         /* add into event wait list */
 860         if (event_register(qconf) == 0)
 861                 intr_en = 1;
 862         else
 863                 RTE_LOG(INFO, L3FWD_POWER, "RX interrupt won't enable.\n");
 864
 865         while (1) {
 866                 stats[lcore_id].nb_iteration_looped++;
 867
 868                 cur_tsc = rte_rdtsc();
 869                 cur_tsc_power = cur_tsc;
 870
 871                 /*
 872                  * TX burst queue drain
 873                  */
 874                 diff_tsc = cur_tsc - prev_tsc;
 875                 if (unlikely(diff_tsc > drain_tsc)) {
 876                         for (i = 0; i < qconf->n_tx_port; ++i) {
 877                                 portid = qconf->tx_port_id[i];
 878                                 rte_eth_tx_buffer_flush(portid,
 879                                                 qconf->tx_queue_id[portid],
 880                                                 qconf->tx_buffer[portid]);
 881                         }
 882                         prev_tsc = cur_tsc;
 883                 }
 884
 885                 diff_tsc_power = cur_tsc_power - prev_tsc_power;
 886                 if (diff_tsc_power > TIMER_RESOLUTION_CYCLES) {
 887                         rte_timer_manage();
 888                         prev_tsc_power = cur_tsc_power;
 889                 }
 890
 891 start_rx:
 892                 /*
 893                  * Read packet from RX queues
 894                  */
 895                 lcore_scaleup_hint = FREQ_CURRENT;
 896                 lcore_rx_idle_count = 0;
 897                 for (i = 0; i < qconf->n_rx_queue; ++i) {
 898                         rx_queue = &(qconf->rx_queue_list[i]);
 899                         rx_queue->idle_hint = 0;
 900                         portid = rx_queue->port_id;
 901                         queueid = rx_queue->queue_id;
 902
 903                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
 904                                                                 MAX_PKT_BURST);
 905
 906                         stats[lcore_id].nb_rx_processed += nb_rx;
 907                         if (unlikely(nb_rx == 0)) {
 908                                 /**
 909                                  * no packet received from rx queue, try to
 910                                  * sleep for a while forcing CPU enter deeper
 911                                  * C states.
 912                                  */
 913                                 rx_queue->zero_rx_packet_count++;
 914
 915                                 if (rx_queue->zero_rx_packet_count <=
 916                                                         MIN_ZERO_POLL_COUNT)
 917                                         continue;
 918
 919                                 rx_queue->idle_hint = power_idle_heuristic(\
 920                                         rx_queue->zero_rx_packet_count);
 921                                 lcore_rx_idle_count++;
 922                         } else {
 923                                 rx_queue->zero_rx_packet_count = 0;
 924
 925                                 /**
 926                                  * do not scale up frequency immediately as
 927                                  * user to kernel space communication is costly
 928                                  * which might impact packet I/O for received
 929                                  * packets.
 930                                  */
 931                                 rx_queue->freq_up_hint =
 932                                         power_freq_scaleup_heuristic(lcore_id,
 933                                                         portid, queueid);
 934                         }
 935
 936                         /* Prefetch first packets */
 937                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 938                                 rte_prefetch0(rte_pktmbuf_mtod(
 939                                                 pkts_burst[j], void *));
 940                         }
 941
 942                         /* Prefetch and forward already prefetched packets */
 943                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 944                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 945                                                 j + PREFETCH_OFFSET], void *));
 946                                 l3fwd_simple_forward(pkts_burst[j], portid,
 947                                                                 qconf);
 948                         }
 949
 950                         /* Forward remaining prefetched packets */
 951                         for (; j < nb_rx; j++) {
 952                                 l3fwd_simple_forward(pkts_burst[j], portid,
 953                                                                 qconf);
 954                         }
 955                 }
 956
 957                 if (likely(lcore_rx_idle_count != qconf->n_rx_queue)) {
 958                         for (i = 1, lcore_scaleup_hint =
 959                                 qconf->rx_queue_list[0].freq_up_hint;
 960                                         i < qconf->n_rx_queue; ++i) {
 961                                 rx_queue = &(qconf->rx_queue_list[i]);
 962                                 if (rx_queue->freq_up_hint >
 963                                                 lcore_scaleup_hint)
 964                                         lcore_scaleup_hint =
 965                                                 rx_queue->freq_up_hint;
 966                         }
 967
 968                         if (lcore_scaleup_hint == FREQ_HIGHEST) {
 969                                 if (rte_power_freq_max)
 970                                         rte_power_freq_max(lcore_id);
 971                         } else if (lcore_scaleup_hint == FREQ_HIGHER) {
 972                                 if (rte_power_freq_up)
 973                                         rte_power_freq_up(lcore_id);
 974                         }
 975                 } else {
 976                         /**
 977                          * All Rx queues empty in recent consecutive polls,
 978                          * sleep in a conservative manner, meaning sleep as
 979                          * less as possible.
 980                          */
 981                         for (i = 1, lcore_idle_hint =
 982                                 qconf->rx_queue_list[0].idle_hint;
 983                                         i < qconf->n_rx_queue; ++i) {
 984                                 rx_queue = &(qconf->rx_queue_list[i]);
 985                                 if (rx_queue->idle_hint < lcore_idle_hint)
 986                                         lcore_idle_hint = rx_queue->idle_hint;
 987                         }
 988
 989                         if (lcore_idle_hint < SUSPEND_THRESHOLD)
 990                                 /**
 991                                  * execute "pause" instruction to avoid context
 992                                  * switch which generally take hundred of
 993                                  * microseconds for short sleep.
 994                                  */
 995                                 rte_delay_us(lcore_idle_hint);
 996                         else {
 997                                 /* suspend until rx interrupt trigges */
 998                                 if (intr_en) {
 999                                         turn_on_intr(qconf);
1000                                         sleep_until_rx_interrupt(
1001                                                 qconf->n_rx_queue);
1002                                 }
1003                                 /* start receiving packets immediately */
1004                                 goto start_rx;
1005                         }
1006                         stats[lcore_id].sleep_time += lcore_idle_hint;
1007                 }
1008         }
1009 }
1010
1011 static int
1012 check_lcore_params(void)
1013 {
1014         uint8_t queue, lcore;
1015         uint16_t i;
1016         int socketid;
1017
1018         for (i = 0; i < nb_lcore_params; ++i) {
1019                 queue = lcore_params[i].queue_id;
1020                 if (queue >= MAX_RX_QUEUE_PER_PORT) {
1021                         printf("invalid queue number: %hhu\n", queue);
1022                         return -1;
1023                 }
1024                 lcore = lcore_params[i].lcore_id;
1025                 if (!rte_lcore_is_enabled(lcore)) {
1026                         printf("error: lcore %hhu is not enabled in lcore "
1027                                                         "mask\n", lcore);
1028                         return -1;
1029                 }
1030                 if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
1031                                                         (numa_on == 0)) {
1032                         printf("warning: lcore %hhu is on socket %d with numa "
1033                                                 "off\n", lcore, socketid);
1034                 }
1035         }
1036         return 0;
1037 }
1038
1039 static int
1040 check_port_config(const unsigned nb_ports)
1041 {
1042         unsigned portid;
1043         uint16_t i;
1044
1045         for (i = 0; i < nb_lcore_params; ++i) {
1046                 portid = lcore_params[i].port_id;
1047                 if ((enabled_port_mask & (1 << portid)) == 0) {
1048                         printf("port %u is not enabled in port mask\n",
1049                                                                 portid);
1050                         return -1;
1051                 }
1052                 if (portid >= nb_ports) {
1053                         printf("port %u is not present on the board\n",
1054                                                                 portid);
1055                         return -1;
1056                 }
1057         }
1058         return 0;
1059 }
1060
1061 static uint8_t
1062 get_port_n_rx_queues(const uint8_t port)
1063 {
1064         int queue = -1;
1065         uint16_t i;
1066
1067         for (i = 0; i < nb_lcore_params; ++i) {
1068                 if (lcore_params[i].port_id == port &&
1069                                 lcore_params[i].queue_id > queue)
1070                         queue = lcore_params[i].queue_id;
1071         }
1072         return (uint8_t)(++queue);
1073 }
1074
1075 static int
1076 init_lcore_rx_queues(void)
1077 {
1078         uint16_t i, nb_rx_queue;
1079         uint8_t lcore;
1080
1081         for (i = 0; i < nb_lcore_params; ++i) {
1082                 lcore = lcore_params[i].lcore_id;
1083                 nb_rx_queue = lcore_conf[lcore].n_rx_queue;
1084                 if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) {
1085                         printf("error: too many queues (%u) for lcore: %u\n",
1086                                 (unsigned)nb_rx_queue + 1, (unsigned)lcore);
1087                         return -1;
1088                 } else {
1089                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id =
1090                                 lcore_params[i].port_id;
1091                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id =
1092                                 lcore_params[i].queue_id;
1093                         lcore_conf[lcore].n_rx_queue++;
1094                 }
1095         }
1096         return 0;
1097 }
1098
1099 /* display usage */
1100 static void
1101 print_usage(const char *prgname)
1102 {
1103         printf ("%s [EAL options] -- -p PORTMASK -P"
1104                 "  [--config (port,queue,lcore)[,(port,queue,lcore]]"
1105                 "  [--enable-jumbo [--max-pkt-len PKTLEN]]\n"
1106                 "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
1107                 "  -P : enable promiscuous mode\n"
1108                 "  --config (port,queue,lcore): rx queues configuration\n"
1109                 "  --no-numa: optional, disable numa awareness\n"
1110                 "  --enable-jumbo: enable jumbo frame"
1111                 " which max packet len is PKTLEN in decimal (64-9600)\n",
1112                 prgname);
1113 }
1114
1115 static int parse_max_pkt_len(const char *pktlen)
1116 {
1117         char *end = NULL;
1118         unsigned long len;
1119
1120         /* parse decimal string */
1121         len = strtoul(pktlen, &end, 10);
1122         if ((pktlen[0] == '\0') || (end == NULL) || (*end != '\0'))
1123                 return -1;
1124
1125         if (len == 0)
1126                 return -1;
1127
1128         return len;
1129 }
1130
1131 static int
1132 parse_portmask(const char *portmask)
1133 {
1134         char *end = NULL;
1135         unsigned long pm;
1136
1137         /* parse hexadecimal string */
1138         pm = strtoul(portmask, &end, 16);
1139         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
1140                 return -1;
1141
1142         if (pm == 0)
1143                 return -1;
1144
1145         return pm;
1146 }
1147
1148 static int
1149 parse_config(const char *q_arg)
1150 {
1151         char s[256];
1152         const char *p, *p0 = q_arg;
1153         char *end;
1154         enum fieldnames {
1155                 FLD_PORT = 0,
1156                 FLD_QUEUE,
1157                 FLD_LCORE,
1158                 _NUM_FLD
1159         };
1160         unsigned long int_fld[_NUM_FLD];
1161         char *str_fld[_NUM_FLD];
1162         int i;
1163         unsigned size;
1164
1165         nb_lcore_params = 0;
1166
1167         while ((p = strchr(p0,'(')) != NULL) {
1168                 ++p;
1169                 if((p0 = strchr(p,')')) == NULL)
1170                         return -1;
1171
1172                 size = p0 - p;
1173                 if(size >= sizeof(s))
1174                         return -1;
1175
1176                 snprintf(s, sizeof(s), "%.*s", size, p);
1177                 if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') !=
1178                                                                 _NUM_FLD)
1179                         return -1;
1180                 for (i = 0; i < _NUM_FLD; i++){
1181                         errno = 0;
1182                         int_fld[i] = strtoul(str_fld[i], &end, 0);
1183                         if (errno != 0 || end == str_fld[i] || int_fld[i] >
1184                                                                         255)
1185                                 return -1;
1186                 }
1187                 if (nb_lcore_params >= MAX_LCORE_PARAMS) {
1188                         printf("exceeded max number of lcore params: %hu\n",
1189                                 nb_lcore_params);
1190                         return -1;
1191                 }
1192                 lcore_params_array[nb_lcore_params].port_id =
1193                                 (uint8_t)int_fld[FLD_PORT];
1194                 lcore_params_array[nb_lcore_params].queue_id =
1195                                 (uint8_t)int_fld[FLD_QUEUE];
1196                 lcore_params_array[nb_lcore_params].lcore_id =
1197                                 (uint8_t)int_fld[FLD_LCORE];
1198                 ++nb_lcore_params;
1199         }
1200         lcore_params = lcore_params_array;
1201
1202         return 0;
1203 }
1204
1205 /* Parse the argument given in the command line of the application */
1206 static int
1207 parse_args(int argc, char **argv)
1208 {
1209         int opt, ret;
1210         char **argvopt;
1211         int option_index;
1212         char *prgname = argv[0];
1213         static struct option lgopts[] = {
1214                 {"config", 1, 0, 0},
1215                 {"no-numa", 0, 0, 0},
1216                 {"enable-jumbo", 0, 0, 0},
1217                 {NULL, 0, 0, 0}
1218         };
1219
1220         argvopt = argv;
1221
1222         while ((opt = getopt_long(argc, argvopt, "p:P",
1223                                 lgopts, &option_index)) != EOF) {
1224
1225                 switch (opt) {
1226                 /* portmask */
1227                 case 'p':
1228                         enabled_port_mask = parse_portmask(optarg);
1229                         if (enabled_port_mask == 0) {
1230                                 printf("invalid portmask\n");
1231                                 print_usage(prgname);
1232                                 return -1;
1233                         }
1234                         break;
1235                 case 'P':
1236                         printf("Promiscuous mode selected\n");
1237                         promiscuous_on = 1;
1238                         break;
1239
1240                 /* long options */
1241                 case 0:
1242                         if (!strncmp(lgopts[option_index].name, "config", 6)) {
1243                                 ret = parse_config(optarg);
1244                                 if (ret) {
1245                                         printf("invalid config\n");
1246                                         print_usage(prgname);
1247                                         return -1;
1248                                 }
1249                         }
1250
1251                         if (!strncmp(lgopts[option_index].name,
1252                                                 "no-numa", 7)) {
1253                                 printf("numa is disabled \n");
1254                                 numa_on = 0;
1255                         }
1256
1257                         if (!strncmp(lgopts[option_index].name,
1258                                         "enable-jumbo", 12)) {
1259                                 struct option lenopts =
1260                                         {"max-pkt-len", required_argument, \
1261                                                                         0, 0};
1262
1263                                 printf("jumbo frame is enabled \n");
1264                                 port_conf.rxmode.jumbo_frame = 1;
1265
1266                                 /**
1267                                  * if no max-pkt-len set, use the default value
1268                                  * ETHER_MAX_LEN
1269                                  */
1270                                 if (0 == getopt_long(argc, argvopt, "",
1271                                                 &lenopts, &option_index)) {
1272                                         ret = parse_max_pkt_len(optarg);
1273                                         if ((ret < 64) ||
1274                                                 (ret > MAX_JUMBO_PKT_LEN)){
1275                                                 printf("invalid packet "
1276                                                                 "length\n");
1277                                                 print_usage(prgname);
1278                                                 return -1;
1279                                         }
1280                                         port_conf.rxmode.max_rx_pkt_len = ret;
1281                                 }
1282                                 printf("set jumbo frame "
1283                                         "max packet length to %u\n",
1284                                 (unsigned int)port_conf.rxmode.max_rx_pkt_len);
1285                         }
1286
1287                         break;
1288
1289                 default:
1290                         print_usage(prgname);
1291                         return -1;
1292                 }
1293         }
1294
1295         if (optind >= 0)
1296                 argv[optind-1] = prgname;
1297
1298         ret = optind-1;
1299         optind = 0; /* reset getopt lib */
1300         return ret;
1301 }
1302
1303 static void
1304 print_ethaddr(const char *name, const struct ether_addr *eth_addr)
1305 {
1306         char buf[ETHER_ADDR_FMT_SIZE];
1307         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
1308         printf("%s%s", name, buf);
1309 }
1310
1311 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
1312 static void
1313 setup_hash(int socketid)
1314 {
1315         struct rte_hash_parameters ipv4_l3fwd_hash_params = {
1316                 .name = NULL,
1317                 .entries = L3FWD_HASH_ENTRIES,
1318                 .key_len = sizeof(struct ipv4_5tuple),
1319                 .hash_func = DEFAULT_HASH_FUNC,
1320                 .hash_func_init_val = 0,
1321         };
1322
1323         struct rte_hash_parameters ipv6_l3fwd_hash_params = {
1324                 .name = NULL,
1325                 .entries = L3FWD_HASH_ENTRIES,
1326                 .key_len = sizeof(struct ipv6_5tuple),
1327                 .hash_func = DEFAULT_HASH_FUNC,
1328                 .hash_func_init_val = 0,
1329         };
1330
1331         unsigned i;
1332         int ret;
1333         char s[64];
1334
1335         /* create ipv4 hash */
1336         snprintf(s, sizeof(s), "ipv4_l3fwd_hash_%d", socketid);
1337         ipv4_l3fwd_hash_params.name = s;
1338         ipv4_l3fwd_hash_params.socket_id = socketid;
1339         ipv4_l3fwd_lookup_struct[socketid] =
1340                 rte_hash_create(&ipv4_l3fwd_hash_params);
1341         if (ipv4_l3fwd_lookup_struct[socketid] == NULL)
1342                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
1343                                 "socket %d\n", socketid);
1344
1345         /* create ipv6 hash */
1346         snprintf(s, sizeof(s), "ipv6_l3fwd_hash_%d", socketid);
1347         ipv6_l3fwd_hash_params.name = s;
1348         ipv6_l3fwd_hash_params.socket_id = socketid;
1349         ipv6_l3fwd_lookup_struct[socketid] =
1350                 rte_hash_create(&ipv6_l3fwd_hash_params);
1351         if (ipv6_l3fwd_lookup_struct[socketid] == NULL)
1352                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
1353                                 "socket %d\n", socketid);
1354
1355
1356         /* populate the ipv4 hash */
1357         for (i = 0; i < IPV4_L3FWD_NUM_ROUTES; i++) {
1358                 ret = rte_hash_add_key (ipv4_l3fwd_lookup_struct[socketid],
1359                                 (void *) &ipv4_l3fwd_route_array[i].key);
1360                 if (ret < 0) {
1361                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
1362                                 "l3fwd hash on socket %d\n", i, socketid);
1363                 }
1364                 ipv4_l3fwd_out_if[ret] = ipv4_l3fwd_route_array[i].if_out;
1365                 printf("Hash: Adding key\n");
1366                 print_ipv4_key(ipv4_l3fwd_route_array[i].key);
1367         }
1368
1369         /* populate the ipv6 hash */
1370         for (i = 0; i < IPV6_L3FWD_NUM_ROUTES; i++) {
1371                 ret = rte_hash_add_key (ipv6_l3fwd_lookup_struct[socketid],
1372                                 (void *) &ipv6_l3fwd_route_array[i].key);
1373                 if (ret < 0) {
1374                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
1375                                 "l3fwd hash on socket %d\n", i, socketid);
1376                 }
1377                 ipv6_l3fwd_out_if[ret] = ipv6_l3fwd_route_array[i].if_out;
1378                 printf("Hash: Adding key\n");
1379                 print_ipv6_key(ipv6_l3fwd_route_array[i].key);
1380         }
1381 }
1382 #endif
1383
1384 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
1385 static void
1386 setup_lpm(int socketid)
1387 {
1388         unsigned i;
1389         int ret;
1390         char s[64];
1391
1392         /* create the LPM table */
1393         struct rte_lpm_config lpm_ipv4_config;
1394
1395         lpm_ipv4_config.max_rules = IPV4_L3FWD_LPM_MAX_RULES;
1396         lpm_ipv4_config.number_tbl8s = 256;
1397         lpm_ipv4_config.flags = 0;
1398
1399         snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
1400         ipv4_l3fwd_lookup_struct[socketid] =
1401                         rte_lpm_create(s, socketid, &lpm_ipv4_config);
1402         if (ipv4_l3fwd_lookup_struct[socketid] == NULL)
1403                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
1404                                 " on socket %d\n", socketid);
1405
1406         /* populate the LPM table */
1407         for (i = 0; i < IPV4_L3FWD_NUM_ROUTES; i++) {
1408                 ret = rte_lpm_add(ipv4_l3fwd_lookup_struct[socketid],
1409                         ipv4_l3fwd_route_array[i].ip,
1410                         ipv4_l3fwd_route_array[i].depth,
1411                         ipv4_l3fwd_route_array[i].if_out);
1412
1413                 if (ret < 0) {
1414                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the "
1415                                 "l3fwd LPM table on socket %d\n",
1416                                 i, socketid);
1417                 }
1418
1419                 printf("LPM: Adding route 0x%08x / %d (%d)\n",
1420                         (unsigned)ipv4_l3fwd_route_array[i].ip,
1421                         ipv4_l3fwd_route_array[i].depth,
1422                         ipv4_l3fwd_route_array[i].if_out);
1423         }
1424 }
1425 #endif
1426
1427 static int
1428 init_mem(unsigned nb_mbuf)
1429 {
1430         struct lcore_conf *qconf;
1431         int socketid;
1432         unsigned lcore_id;
1433         char s[64];
1434
1435         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1436                 if (rte_lcore_is_enabled(lcore_id) == 0)
1437                         continue;
1438
1439                 if (numa_on)
1440                         socketid = rte_lcore_to_socket_id(lcore_id);
1441                 else
1442                         socketid = 0;
1443
1444                 if (socketid >= NB_SOCKETS) {
1445                         rte_exit(EXIT_FAILURE, "Socket %d of lcore %u is "
1446                                         "out of range %d\n", socketid,
1447                                                 lcore_id, NB_SOCKETS);
1448                 }
1449                 if (pktmbuf_pool[socketid] == NULL) {
1450                         snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
1451                         pktmbuf_pool[socketid] =
1452                                 rte_pktmbuf_pool_create(s, nb_mbuf,
1453                                         MEMPOOL_CACHE_SIZE, 0,
1454                                         RTE_MBUF_DEFAULT_BUF_SIZE,
1455                                         socketid);
1456                         if (pktmbuf_pool[socketid] == NULL)
1457                                 rte_exit(EXIT_FAILURE,
1458                                         "Cannot init mbuf pool on socket %d\n",
1459                                                                 socketid);
1460                         else
1461                                 printf("Allocated mbuf pool on socket %d\n",
1462                                                                 socketid);
1463
1464 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
1465                         setup_lpm(socketid);
1466 #else
1467                         setup_hash(socketid);
1468 #endif
1469                 }
1470                 qconf = &lcore_conf[lcore_id];
1471                 qconf->ipv4_lookup_struct = ipv4_l3fwd_lookup_struct[socketid];
1472 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
1473                 qconf->ipv6_lookup_struct = ipv6_l3fwd_lookup_struct[socketid];
1474 #endif
1475         }
1476         return 0;
1477 }
1478
1479 /* Check the link status of all ports in up to 9s, and print them finally */
1480 static void
1481 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
1482 {
1483 #define CHECK_INTERVAL 100 /* 100ms */
1484 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
1485         uint8_t portid, count, all_ports_up, print_flag = 0;
1486         struct rte_eth_link link;
1487
1488         printf("\nChecking link status");
1489         fflush(stdout);
1490         for (count = 0; count <= MAX_CHECK_TIME; count++) {
1491                 all_ports_up = 1;
1492                 for (portid = 0; portid < port_num; portid++) {
1493                         if ((port_mask & (1 << portid)) == 0)
1494                                 continue;
1495                         memset(&link, 0, sizeof(link));
1496                         rte_eth_link_get_nowait(portid, &link);
1497                         /* print link status if flag set */
1498                         if (print_flag == 1) {
1499                                 if (link.link_status)
1500                                         printf("Port %d Link Up - speed %u "
1501                                                 "Mbps - %s\n", (uint8_t)portid,
1502                                                 (unsigned)link.link_speed,
1503                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
1504                                         ("full-duplex") : ("half-duplex\n"));
1505                                 else
1506                                         printf("Port %d Link Down\n",
1507                                                 (uint8_t)portid);
1508                                 continue;
1509                         }
1510                         /* clear all_ports_up flag if any link down */
1511                         if (link.link_status == ETH_LINK_DOWN) {
1512                                 all_ports_up = 0;
1513                                 break;
1514                         }
1515                 }
1516                 /* after finally printing all link status, get out */
1517                 if (print_flag == 1)
1518                         break;
1519
1520                 if (all_ports_up == 0) {
1521                         printf(".");
1522                         fflush(stdout);
1523                         rte_delay_ms(CHECK_INTERVAL);
1524                 }
1525
1526                 /* set the print_flag if all ports up or timeout */
1527                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
1528                         print_flag = 1;
1529                         printf("done\n");
1530                 }
1531         }
1532 }
1533
1534 int
1535 main(int argc, char **argv)
1536 {
1537         struct lcore_conf *qconf;
1538         struct rte_eth_dev_info dev_info;
1539         struct rte_eth_txconf *txconf;
1540         int ret;
1541         unsigned nb_ports;
1542         uint16_t queueid;
1543         unsigned lcore_id;
1544         uint64_t hz;
1545         uint32_t n_tx_queue, nb_lcores;
1546         uint32_t dev_rxq_num, dev_txq_num;
1547         uint8_t portid, nb_rx_queue, queue, socketid;
1548
1549         /* catch SIGINT and restore cpufreq governor to ondemand */
1550         signal(SIGINT, signal_exit_now);
1551
1552         /* init EAL */
1553         ret = rte_eal_init(argc, argv);
1554         if (ret < 0)
1555                 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
1556         argc -= ret;
1557         argv += ret;
1558
1559         /* init RTE timer library to be used late */
1560         rte_timer_subsystem_init();
1561
1562         /* parse application arguments (after the EAL ones) */
1563         ret = parse_args(argc, argv);
1564         if (ret < 0)
1565                 rte_exit(EXIT_FAILURE, "Invalid L3FWD parameters\n");
1566
1567         if (check_lcore_params() < 0)
1568                 rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");
1569
1570         ret = init_lcore_rx_queues();
1571         if (ret < 0)
1572                 rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");
1573
1574         nb_ports = rte_eth_dev_count();
1575
1576         if (check_port_config(nb_ports) < 0)
1577                 rte_exit(EXIT_FAILURE, "check_port_config failed\n");
1578
1579         nb_lcores = rte_lcore_count();
1580
1581         /* initialize all ports */
1582         for (portid = 0; portid < nb_ports; portid++) {
1583                 /* skip ports that are not enabled */
1584                 if ((enabled_port_mask & (1 << portid)) == 0) {
1585                         printf("\nSkipping disabled port %d\n", portid);
1586                         continue;
1587                 }
1588
1589                 /* init port */
1590                 printf("Initializing port %d ... ", portid );
1591                 fflush(stdout);
1592
1593                 rte_eth_dev_info_get(portid, &dev_info);
1594                 dev_rxq_num = dev_info.max_rx_queues;
1595                 dev_txq_num = dev_info.max_tx_queues;
1596
1597                 nb_rx_queue = get_port_n_rx_queues(portid);
1598                 if (nb_rx_queue > dev_rxq_num)
1599                         rte_exit(EXIT_FAILURE,
1600                                 "Cannot configure not existed rxq: "
1601                                 "port=%d\n", portid);
1602
1603                 n_tx_queue = nb_lcores;
1604                 if (n_tx_queue > dev_txq_num)
1605                         n_tx_queue = dev_txq_num;
1606                 printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
1607                         nb_rx_queue, (unsigned)n_tx_queue );
1608                 ret = rte_eth_dev_configure(portid, nb_rx_queue,
1609                                         (uint16_t)n_tx_queue, &port_conf);
1610                 if (ret < 0)
1611                         rte_exit(EXIT_FAILURE, "Cannot configure device: "
1612                                         "err=%d, port=%d\n", ret, portid);
1613
1614                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
1615                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
1616                 printf(", ");
1617
1618                 /* init memory */
1619                 ret = init_mem(NB_MBUF);
1620                 if (ret < 0)
1621                         rte_exit(EXIT_FAILURE, "init_mem failed\n");
1622
1623                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1624                         if (rte_lcore_is_enabled(lcore_id) == 0)
1625                                 continue;
1626
1627                         /* Initialize TX buffers */
1628                         qconf = &lcore_conf[lcore_id];
1629                         qconf->tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
1630                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
1631                                 rte_eth_dev_socket_id(portid));
1632                         if (qconf->tx_buffer[portid] == NULL)
1633                                 rte_exit(EXIT_FAILURE, "Can't allocate tx buffer for port %u\n",
1634                                                 (unsigned) portid);
1635
1636                         rte_eth_tx_buffer_init(qconf->tx_buffer[portid], MAX_PKT_BURST);
1637                 }
1638
1639                 /* init one TX queue per couple (lcore,port) */
1640                 queueid = 0;
1641                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1642                         if (rte_lcore_is_enabled(lcore_id) == 0)
1643                                 continue;
1644
1645                         if (queueid >= dev_txq_num)
1646                                 continue;
1647
1648                         if (numa_on)
1649                                 socketid = \
1650                                 (uint8_t)rte_lcore_to_socket_id(lcore_id);
1651                         else
1652                                 socketid = 0;
1653
1654                         printf("txq=%u,%d,%d ", lcore_id, queueid, socketid);
1655                         fflush(stdout);
1656
1657                         rte_eth_dev_info_get(portid, &dev_info);
1658                         txconf = &dev_info.default_txconf;
1659                         if (port_conf.rxmode.jumbo_frame)
1660                                 txconf->txq_flags = 0;
1661                         ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
1662                                                      socketid, txconf);
1663                         if (ret < 0)
1664                                 rte_exit(EXIT_FAILURE,
1665                                         "rte_eth_tx_queue_setup: err=%d, "
1666                                                 "port=%d\n", ret, portid);
1667
1668                         qconf = &lcore_conf[lcore_id];
1669                         qconf->tx_queue_id[portid] = queueid;
1670                         queueid++;
1671
1672                         qconf->tx_port_id[qconf->n_tx_port] = portid;
1673                         qconf->n_tx_port++;
1674                 }
1675                 printf("\n");
1676         }
1677
1678         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1679                 if (rte_lcore_is_enabled(lcore_id) == 0)
1680                         continue;
1681
1682                 /* init power management library */
1683                 ret = rte_power_init(lcore_id);
1684                 if (ret)
1685                         RTE_LOG(ERR, POWER,
1686                                 "Library initialization failed on core %u\n", lcore_id);
1687
1688                 /* init timer structures for each enabled lcore */
1689                 rte_timer_init(&power_timers[lcore_id]);
1690                 hz = rte_get_timer_hz();
1691                 rte_timer_reset(&power_timers[lcore_id],
1692                         hz/TIMER_NUMBER_PER_SECOND, SINGLE, lcore_id,
1693                                                 power_timer_cb, NULL);
1694
1695                 qconf = &lcore_conf[lcore_id];
1696                 printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
1697                 fflush(stdout);
1698                 /* init RX queues */
1699                 for(queue = 0; queue < qconf->n_rx_queue; ++queue) {
1700                         portid = qconf->rx_queue_list[queue].port_id;
1701                         queueid = qconf->rx_queue_list[queue].queue_id;
1702
1703                         if (numa_on)
1704                                 socketid = \
1705                                 (uint8_t)rte_lcore_to_socket_id(lcore_id);
1706                         else
1707                                 socketid = 0;
1708
1709                         printf("rxq=%d,%d,%d ", portid, queueid, socketid);
1710                         fflush(stdout);
1711
1712                         ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
1713                                 socketid, NULL,
1714                                 pktmbuf_pool[socketid]);
1715                         if (ret < 0)
1716                                 rte_exit(EXIT_FAILURE,
1717                                         "rte_eth_rx_queue_setup: err=%d, "
1718                                                 "port=%d\n", ret, portid);
1719                 }
1720         }
1721
1722         printf("\n");
1723
1724         /* start ports */
1725         for (portid = 0; portid < nb_ports; portid++) {
1726                 if ((enabled_port_mask & (1 << portid)) == 0) {
1727                         continue;
1728                 }
1729                 /* Start device */
1730                 ret = rte_eth_dev_start(portid);
1731                 if (ret < 0)
1732                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, "
1733                                                 "port=%d\n", ret, portid);
1734                 /*
1735                  * If enabled, put device in promiscuous mode.
1736                  * This allows IO forwarding mode to forward packets
1737                  * to itself through 2 cross-connected  ports of the
1738                  * target machine.
1739                  */
1740                 if (promiscuous_on)
1741                         rte_eth_promiscuous_enable(portid);
1742                 /* initialize spinlock for each port */
1743                 rte_spinlock_init(&(locks[portid]));
1744         }
1745
1746         check_all_ports_link_status((uint8_t)nb_ports, enabled_port_mask);
1747
1748         /* launch per-lcore init on every lcore */
1749         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1750         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1751                 if (rte_eal_wait_lcore(lcore_id) < 0)
1752                         return -1;
1753         }
1754
1755         return 0;
1756 }