examples/l3fwd-power/main.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <stdint.h>
  37 #include <inttypes.h>
  38 #include <sys/types.h>
  39 #include <string.h>
  40 #include <sys/queue.h>
  41 #include <stdarg.h>
  42 #include <errno.h>
  43 #include <getopt.h>
  44 #include <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_memory.h>
  51 #include <rte_memcpy.h>
  52 #include <rte_memzone.h>
  53 #include <rte_eal.h>
  54 #include <rte_per_lcore.h>
  55 #include <rte_launch.h>
  56 #include <rte_atomic.h>
  57 #include <rte_cycles.h>
  58 #include <rte_prefetch.h>
  59 #include <rte_lcore.h>
  60 #include <rte_per_lcore.h>
  61 #include <rte_branch_prediction.h>
  62 #include <rte_interrupts.h>
  63 #include <rte_pci.h>
  64 #include <rte_random.h>
  65 #include <rte_debug.h>
  66 #include <rte_ether.h>
  67 #include <rte_ethdev.h>
  68 #include <rte_ring.h>
  69 #include <rte_mempool.h>
  70 #include <rte_mbuf.h>
  71 #include <rte_ip.h>
  72 #include <rte_tcp.h>
  73 #include <rte_udp.h>
  74 #include <rte_string_fns.h>
  75 #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 mbuf_table {
 177         uint16_t len;
 178         struct rte_mbuf *m_table[MAX_PKT_BURST];
 179 };
 180
 181 struct lcore_rx_queue {
 182         uint8_t port_id;
 183         uint8_t queue_id;
 184         enum freq_scale_hint_t freq_up_hint;
 185         uint32_t zero_rx_packet_count;
 186         uint32_t idle_hint;
 187 } __rte_cache_aligned;
 188
 189 #define MAX_RX_QUEUE_PER_LCORE 16
 190 #define MAX_TX_QUEUE_PER_PORT RTE_MAX_ETHPORTS
 191 #define MAX_RX_QUEUE_PER_PORT 128
 192
 193 #define MAX_RX_QUEUE_INTERRUPT_PER_PORT 16
 194
 195
 196 #define MAX_LCORE_PARAMS 1024
 197 struct lcore_params {
 198         uint8_t port_id;
 199         uint8_t queue_id;
 200         uint8_t lcore_id;
 201 } __rte_cache_aligned;
 202
 203 static struct lcore_params lcore_params_array[MAX_LCORE_PARAMS];
 204 static struct lcore_params lcore_params_array_default[] = {
 205         {0, 0, 2},
 206         {0, 1, 2},
 207         {0, 2, 2},
 208         {1, 0, 2},
 209         {1, 1, 2},
 210         {1, 2, 2},
 211         {2, 0, 2},
 212         {3, 0, 3},
 213         {3, 1, 3},
 214 };
 215
 216 static struct lcore_params * lcore_params = lcore_params_array_default;
 217 static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
 218                                 sizeof(lcore_params_array_default[0]);
 219
 220 static struct rte_eth_conf port_conf = {
 221         .rxmode = {
 222                 .mq_mode        = ETH_MQ_RX_RSS,
 223                 .max_rx_pkt_len = ETHER_MAX_LEN,
 224                 .split_hdr_size = 0,
 225                 .header_split   = 0, /**< Header Split disabled */
 226                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
 227                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 228                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 229                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
 230         },
 231         .rx_adv_conf = {
 232                 .rss_conf = {
 233                         .rss_key = NULL,
 234                         .rss_hf = ETH_RSS_UDP,
 235                 },
 236         },
 237         .txmode = {
 238                 .mq_mode = ETH_MQ_TX_NONE,
 239         },
 240         .intr_conf = {
 241                 .lsc = 1,
 242                 .rxq = 1,
 243         },
 244 };
 245
 246 static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 247
 248
 249 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 250
 251 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
 252 #include <rte_hash_crc.h>
 253 #define DEFAULT_HASH_FUNC       rte_hash_crc
 254 #else
 255 #include <rte_jhash.h>
 256 #define DEFAULT_HASH_FUNC       rte_jhash
 257 #endif
 258
 259 struct ipv4_5tuple {
 260         uint32_t ip_dst;
 261         uint32_t ip_src;
 262         uint16_t port_dst;
 263         uint16_t port_src;
 264         uint8_t  proto;
 265 } __attribute__((__packed__));
 266
 267 struct ipv6_5tuple {
 268         uint8_t  ip_dst[IPV6_ADDR_LEN];
 269         uint8_t  ip_src[IPV6_ADDR_LEN];
 270         uint16_t port_dst;
 271         uint16_t port_src;
 272         uint8_t  proto;
 273 } __attribute__((__packed__));
 274
 275 struct ipv4_l3fwd_route {
 276         struct ipv4_5tuple key;
 277         uint8_t if_out;
 278 };
 279
 280 struct ipv6_l3fwd_route {
 281         struct ipv6_5tuple key;
 282         uint8_t if_out;
 283 };
 284
 285 static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
 286         {{IPv4(100,10,0,1), IPv4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0},
 287         {{IPv4(100,20,0,2), IPv4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1},
 288         {{IPv4(100,30,0,3), IPv4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2},
 289         {{IPv4(100,40,0,4), IPv4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3},
 290 };
 291
 292 static struct ipv6_l3fwd_route ipv6_l3fwd_route_array[] = {
 293         {
 294                 {
 295                         {0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 296                          0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
 297                         {0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 298                          0x02, 0x1e, 0x67, 0xff, 0xfe, 0x0d, 0xb6, 0x0a},
 299                          1, 10, IPPROTO_UDP
 300                 }, 4
 301         },
 302 };
 303
 304 typedef struct rte_hash lookup_struct_t;
 305 static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
 306 static lookup_struct_t *ipv6_l3fwd_lookup_struct[NB_SOCKETS];
 307
 308 #define L3FWD_HASH_ENTRIES      1024
 309
 310 #define IPV4_L3FWD_NUM_ROUTES \
 311         (sizeof(ipv4_l3fwd_route_array) / sizeof(ipv4_l3fwd_route_array[0]))
 312
 313 #define IPV6_L3FWD_NUM_ROUTES \
 314         (sizeof(ipv6_l3fwd_route_array) / sizeof(ipv6_l3fwd_route_array[0]))
 315
 316 static uint8_t ipv4_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 317 static uint8_t ipv6_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 318 #endif
 319
 320 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 321 struct ipv4_l3fwd_route {
 322         uint32_t ip;
 323         uint8_t  depth;
 324         uint8_t  if_out;
 325 };
 326
 327 static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
 328         {IPv4(1,1,1,0), 24, 0},
 329         {IPv4(2,1,1,0), 24, 1},
 330         {IPv4(3,1,1,0), 24, 2},
 331         {IPv4(4,1,1,0), 24, 3},
 332         {IPv4(5,1,1,0), 24, 4},
 333         {IPv4(6,1,1,0), 24, 5},
 334         {IPv4(7,1,1,0), 24, 6},
 335         {IPv4(8,1,1,0), 24, 7},
 336 };
 337
 338 #define IPV4_L3FWD_NUM_ROUTES \
 339         (sizeof(ipv4_l3fwd_route_array) / sizeof(ipv4_l3fwd_route_array[0]))
 340
 341 #define IPV4_L3FWD_LPM_MAX_RULES     1024
 342
 343 typedef struct rte_lpm lookup_struct_t;
 344 static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
 345 #endif
 346
 347 struct lcore_conf {
 348         uint16_t n_rx_queue;
 349         struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 350         uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
 351         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 352         lookup_struct_t * ipv4_lookup_struct;
 353         lookup_struct_t * ipv6_lookup_struct;
 354 } __rte_cache_aligned;
 355
 356 struct lcore_stats {
 357         /* total sleep time in ms since last frequency scaling down */
 358         uint32_t sleep_time;
 359         /* number of long sleep recently */
 360         uint32_t nb_long_sleep;
 361         /* freq. scaling up trend */
 362         uint32_t trend;
 363         /* total packet processed recently */
 364         uint64_t nb_rx_processed;
 365         /* total iterations looped recently */
 366         uint64_t nb_iteration_looped;
 367         uint32_t padding[9];
 368 } __rte_cache_aligned;
 369
 370 static struct lcore_conf lcore_conf[RTE_MAX_LCORE] __rte_cache_aligned;
 371 static struct lcore_stats stats[RTE_MAX_LCORE] __rte_cache_aligned;
 372 static struct rte_timer power_timers[RTE_MAX_LCORE];
 373
 374 static inline uint32_t power_idle_heuristic(uint32_t zero_rx_packet_count);
 375 static inline enum freq_scale_hint_t power_freq_scaleup_heuristic( \
 376                         unsigned lcore_id, uint8_t port_id, uint16_t queue_id);
 377
 378 /* exit signal handler */
 379 static void
 380 signal_exit_now(int sigtype)
 381 {
 382         unsigned lcore_id;
 383         int ret;
 384
 385         if (sigtype == SIGINT) {
 386                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 387                         if (rte_lcore_is_enabled(lcore_id) == 0)
 388                                 continue;
 389
 390                         /* init power management library */
 391                         ret = rte_power_exit(lcore_id);
 392                         if (ret)
 393                                 rte_exit(EXIT_FAILURE, "Power management "
 394                                         "library de-initialization failed on "
 395                                                         "core%u\n", lcore_id);
 396                 }
 397         }
 398
 399         rte_exit(EXIT_SUCCESS, "User forced exit\n");
 400 }
 401
 402 /*  Freqency scale down timer callback */
 403 static void
 404 power_timer_cb(__attribute__((unused)) struct rte_timer *tim,
 405                           __attribute__((unused)) void *arg)
 406 {
 407         uint64_t hz;
 408         float sleep_time_ratio;
 409         unsigned lcore_id = rte_lcore_id();
 410
 411         /* accumulate total execution time in us when callback is invoked */
 412         sleep_time_ratio = (float)(stats[lcore_id].sleep_time) /
 413                                         (float)SCALING_PERIOD;
 414         /**
 415          * check whether need to scale down frequency a step if it sleep a lot.
 416          */
 417         if (sleep_time_ratio >= SCALING_DOWN_TIME_RATIO_THRESHOLD) {
 418                 if (rte_power_freq_down)
 419                         rte_power_freq_down(lcore_id);
 420         }
 421         else if ( (unsigned)(stats[lcore_id].nb_rx_processed /
 422                 stats[lcore_id].nb_iteration_looped) < MAX_PKT_BURST) {
 423                 /**
 424                  * scale down a step if average packet per iteration less
 425                  * than expectation.
 426                  */
 427                 if (rte_power_freq_down)
 428                         rte_power_freq_down(lcore_id);
 429         }
 430
 431         /**
 432          * initialize another timer according to current frequency to ensure
 433          * timer interval is relatively fixed.
 434          */
 435         hz = rte_get_timer_hz();
 436         rte_timer_reset(&power_timers[lcore_id], hz/TIMER_NUMBER_PER_SECOND,
 437                                 SINGLE, lcore_id, power_timer_cb, NULL);
 438
 439         stats[lcore_id].nb_rx_processed = 0;
 440         stats[lcore_id].nb_iteration_looped = 0;
 441
 442         stats[lcore_id].sleep_time = 0;
 443 }
 444
 445 /* Send burst of packets on an output interface */
 446 static inline int
 447 send_burst(struct lcore_conf *qconf, uint16_t n, uint8_t port)
 448 {
 449         struct rte_mbuf **m_table;
 450         int ret;
 451         uint16_t queueid;
 452
 453         queueid = qconf->tx_queue_id[port];
 454         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 455
 456         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 457         if (unlikely(ret < n)) {
 458                 do {
 459                         rte_pktmbuf_free(m_table[ret]);
 460                 } while (++ret < n);
 461         }
 462
 463         return 0;
 464 }
 465
 466 /* Enqueue a single packet, and send burst if queue is filled */
 467 static inline int
 468 send_single_packet(struct rte_mbuf *m, uint8_t port)
 469 {
 470         uint32_t lcore_id;
 471         uint16_t len;
 472         struct lcore_conf *qconf;
 473
 474         lcore_id = rte_lcore_id();
 475
 476         qconf = &lcore_conf[lcore_id];
 477         len = qconf->tx_mbufs[port].len;
 478         qconf->tx_mbufs[port].m_table[len] = m;
 479         len++;
 480
 481         /* enough pkts to be sent */
 482         if (unlikely(len == MAX_PKT_BURST)) {
 483                 send_burst(qconf, MAX_PKT_BURST, port);
 484                 len = 0;
 485         }
 486
 487         qconf->tx_mbufs[port].len = len;
 488         return 0;
 489 }
 490
 491 #ifdef DO_RFC_1812_CHECKS
 492 static inline int
 493 is_valid_ipv4_pkt(struct ipv4_hdr *pkt, uint32_t link_len)
 494 {
 495         /* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */
 496         /*
 497          * 1. The packet length reported by the Link Layer must be large
 498          * enough to hold the minimum length legal IP datagram (20 bytes).
 499          */
 500         if (link_len < sizeof(struct ipv4_hdr))
 501                 return -1;
 502
 503         /* 2. The IP checksum must be correct. */
 504         /* this is checked in H/W */
 505
 506         /*
 507          * 3. The IP version number must be 4. If the version number is not 4
 508          * then the packet may be another version of IP, such as IPng or
 509          * ST-II.
 510          */
 511         if (((pkt->version_ihl) >> 4) != 4)
 512                 return -3;
 513         /*
 514          * 4. The IP header length field must be large enough to hold the
 515          * minimum length legal IP datagram (20 bytes = 5 words).
 516          */
 517         if ((pkt->version_ihl & 0xf) < 5)
 518                 return -4;
 519
 520         /*
 521          * 5. The IP total length field must be large enough to hold the IP
 522          * datagram header, whose length is specified in the IP header length
 523          * field.
 524          */
 525         if (rte_cpu_to_be_16(pkt->total_length) < sizeof(struct ipv4_hdr))
 526                 return -5;
 527
 528         return 0;
 529 }
 530 #endif
 531
 532 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 533 static void
 534 print_ipv4_key(struct ipv4_5tuple key)
 535 {
 536         printf("IP dst = %08x, IP src = %08x, port dst = %d, port src = %d, "
 537                 "proto = %d\n", (unsigned)key.ip_dst, (unsigned)key.ip_src,
 538                                 key.port_dst, key.port_src, key.proto);
 539 }
 540 static void
 541 print_ipv6_key(struct ipv6_5tuple key)
 542 {
 543         printf( "IP dst = " IPv6_BYTES_FMT ", IP src = " IPv6_BYTES_FMT ", "
 544                 "port dst = %d, port src = %d, proto = %d\n",
 545                 IPv6_BYTES(key.ip_dst), IPv6_BYTES(key.ip_src),
 546                 key.port_dst, key.port_src, key.proto);
 547 }
 548
 549 static inline uint8_t
 550 get_ipv4_dst_port(struct ipv4_hdr *ipv4_hdr, uint8_t portid,
 551                 lookup_struct_t * ipv4_l3fwd_lookup_struct)
 552 {
 553         struct ipv4_5tuple key;
 554         struct tcp_hdr *tcp;
 555         struct udp_hdr *udp;
 556         int ret = 0;
 557
 558         key.ip_dst = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
 559         key.ip_src = rte_be_to_cpu_32(ipv4_hdr->src_addr);
 560         key.proto = ipv4_hdr->next_proto_id;
 561
 562         switch (ipv4_hdr->next_proto_id) {
 563         case IPPROTO_TCP:
 564                 tcp = (struct tcp_hdr *)((unsigned char *)ipv4_hdr +
 565                                         sizeof(struct ipv4_hdr));
 566                 key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
 567                 key.port_src = rte_be_to_cpu_16(tcp->src_port);
 568                 break;
 569
 570         case IPPROTO_UDP:
 571                 udp = (struct udp_hdr *)((unsigned char *)ipv4_hdr +
 572                                         sizeof(struct ipv4_hdr));
 573                 key.port_dst = rte_be_to_cpu_16(udp->dst_port);
 574                 key.port_src = rte_be_to_cpu_16(udp->src_port);
 575                 break;
 576
 577         default:
 578                 key.port_dst = 0;
 579                 key.port_src = 0;
 580                 break;
 581         }
 582
 583         /* Find destination port */
 584         ret = rte_hash_lookup(ipv4_l3fwd_lookup_struct, (const void *)&key);
 585         return (uint8_t)((ret < 0)? portid : ipv4_l3fwd_out_if[ret]);
 586 }
 587
 588 static inline uint8_t
 589 get_ipv6_dst_port(struct ipv6_hdr *ipv6_hdr,  uint8_t portid,
 590                         lookup_struct_t *ipv6_l3fwd_lookup_struct)
 591 {
 592         struct ipv6_5tuple key;
 593         struct tcp_hdr *tcp;
 594         struct udp_hdr *udp;
 595         int ret = 0;
 596
 597         memcpy(key.ip_dst, ipv6_hdr->dst_addr, IPV6_ADDR_LEN);
 598         memcpy(key.ip_src, ipv6_hdr->src_addr, IPV6_ADDR_LEN);
 599
 600         key.proto = ipv6_hdr->proto;
 601
 602         switch (ipv6_hdr->proto) {
 603         case IPPROTO_TCP:
 604                 tcp = (struct tcp_hdr *)((unsigned char *) ipv6_hdr +
 605                                         sizeof(struct ipv6_hdr));
 606                 key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
 607                 key.port_src = rte_be_to_cpu_16(tcp->src_port);
 608                 break;
 609
 610         case IPPROTO_UDP:
 611                 udp = (struct udp_hdr *)((unsigned char *) ipv6_hdr +
 612                                         sizeof(struct ipv6_hdr));
 613                 key.port_dst = rte_be_to_cpu_16(udp->dst_port);
 614                 key.port_src = rte_be_to_cpu_16(udp->src_port);
 615                 break;
 616
 617         default:
 618                 key.port_dst = 0;
 619                 key.port_src = 0;
 620                 break;
 621         }
 622
 623         /* Find destination port */
 624         ret = rte_hash_lookup(ipv6_l3fwd_lookup_struct, (const void *)&key);
 625         return (uint8_t)((ret < 0)? portid : ipv6_l3fwd_out_if[ret]);
 626 }
 627 #endif
 628
 629 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 630 static inline uint8_t
 631 get_ipv4_dst_port(struct ipv4_hdr *ipv4_hdr, uint8_t portid,
 632                 lookup_struct_t *ipv4_l3fwd_lookup_struct)
 633 {
 634         uint8_t next_hop;
 635
 636         return (uint8_t) ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct,
 637                         rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0)?
 638                         next_hop : portid);
 639 }
 640 #endif
 641
 642 static inline void
 643 l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid,
 644                                 struct lcore_conf *qconf)
 645 {
 646         struct ether_hdr *eth_hdr;
 647         struct ipv4_hdr *ipv4_hdr;
 648         void *d_addr_bytes;
 649         uint8_t dst_port;
 650
 651         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 652
 653         if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
 654                 /* Handle IPv4 headers.*/
 655                 ipv4_hdr =
 656                         rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
 657                                                 sizeof(struct ether_hdr));
 658
 659 #ifdef DO_RFC_1812_CHECKS
 660                 /* Check to make sure the packet is valid (RFC1812) */
 661                 if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
 662                         rte_pktmbuf_free(m);
 663                         return;
 664                 }
 665 #endif
 666
 667                 dst_port = get_ipv4_dst_port(ipv4_hdr, portid,
 668                                         qconf->ipv4_lookup_struct);
 669                 if (dst_port >= RTE_MAX_ETHPORTS ||
 670                                 (enabled_port_mask & 1 << dst_port) == 0)
 671                         dst_port = portid;
 672
 673                 /* 02:00:00:00:00:xx */
 674                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 675                 *((uint64_t *)d_addr_bytes) =
 676                         0x000000000002 + ((uint64_t)dst_port << 40);
 677
 678 #ifdef DO_RFC_1812_CHECKS
 679                 /* Update time to live and header checksum */
 680                 --(ipv4_hdr->time_to_live);
 681                 ++(ipv4_hdr->hdr_checksum);
 682 #endif
 683
 684                 /* src addr */
 685                 ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 686
 687                 send_single_packet(m, dst_port);
 688         } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
 689                 /* Handle IPv6 headers.*/
 690 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 691                 struct ipv6_hdr *ipv6_hdr;
 692
 693                 ipv6_hdr =
 694                         rte_pktmbuf_mtod_offset(m, struct ipv6_hdr *,
 695                                                 sizeof(struct ether_hdr));
 696
 697                 dst_port = get_ipv6_dst_port(ipv6_hdr, portid,
 698                                         qconf->ipv6_lookup_struct);
 699
 700                 if (dst_port >= RTE_MAX_ETHPORTS ||
 701                                 (enabled_port_mask & 1 << dst_port) == 0)
 702                         dst_port = portid;
 703
 704                 /* 02:00:00:00:00:xx */
 705                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 706                 *((uint64_t *)d_addr_bytes) =
 707                         0x000000000002 + ((uint64_t)dst_port << 40);
 708
 709                 /* src addr */
 710                 ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 711
 712                 send_single_packet(m, dst_port);
 713 #else
 714                 /* We don't currently handle IPv6 packets in LPM mode. */
 715                 rte_pktmbuf_free(m);
 716 #endif
 717         }
 718
 719 }
 720
 721 #define MINIMUM_SLEEP_TIME         1
 722 #define SUSPEND_THRESHOLD          300
 723
 724 static inline uint32_t
 725 power_idle_heuristic(uint32_t zero_rx_packet_count)
 726 {
 727         /* If zero count is less than 100,  sleep 1us */
 728         if (zero_rx_packet_count < SUSPEND_THRESHOLD)
 729                 return MINIMUM_SLEEP_TIME;
 730         /* If zero count is less than 1000, sleep 100 us which is the
 731                 minimum latency switching from C3/C6 to C0
 732         */
 733         else
 734                 return SUSPEND_THRESHOLD;
 735
 736         return 0;
 737 }
 738
 739 static inline enum freq_scale_hint_t
 740 power_freq_scaleup_heuristic(unsigned lcore_id,
 741                              uint8_t port_id,
 742                              uint16_t queue_id)
 743 {
 744 /**
 745  * HW Rx queue size is 128 by default, Rx burst read at maximum 32 entries
 746  * per iteration
 747  */
 748 #define FREQ_GEAR1_RX_PACKET_THRESHOLD             MAX_PKT_BURST
 749 #define FREQ_GEAR2_RX_PACKET_THRESHOLD             (MAX_PKT_BURST*2)
 750 #define FREQ_GEAR3_RX_PACKET_THRESHOLD             (MAX_PKT_BURST*3)
 751 #define FREQ_UP_TREND1_ACC   1
 752 #define FREQ_UP_TREND2_ACC   100
 753 #define FREQ_UP_THRESHOLD    10000
 754
 755         if (likely(rte_eth_rx_descriptor_done(port_id, queue_id,
 756                         FREQ_GEAR3_RX_PACKET_THRESHOLD) > 0)) {
 757                 stats[lcore_id].trend = 0;
 758                 return FREQ_HIGHEST;
 759         } else if (likely(rte_eth_rx_descriptor_done(port_id, queue_id,
 760                         FREQ_GEAR2_RX_PACKET_THRESHOLD) > 0))
 761                 stats[lcore_id].trend += FREQ_UP_TREND2_ACC;
 762         else if (likely(rte_eth_rx_descriptor_done(port_id, queue_id,
 763                         FREQ_GEAR1_RX_PACKET_THRESHOLD) > 0))
 764                 stats[lcore_id].trend += FREQ_UP_TREND1_ACC;
 765
 766         if (likely(stats[lcore_id].trend > FREQ_UP_THRESHOLD)) {
 767                 stats[lcore_id].trend = 0;
 768                 return FREQ_HIGHER;
 769         }
 770
 771         return FREQ_CURRENT;
 772 }
 773
 774 /**
 775  * force polling thread sleep until one-shot rx interrupt triggers
 776  * @param port_id
 777  *  Port id.
 778  * @param queue_id
 779  *  Rx queue id.
 780  * @return
 781  *  0 on success
 782  */
 783 static int
 784 sleep_until_rx_interrupt(int num)
 785 {
 786         struct rte_epoll_event event[num];
 787         int n, i;
 788         uint8_t port_id, queue_id;
 789         void *data;
 790
 791         RTE_LOG(INFO, L3FWD_POWER,
 792                 "lcore %u sleeps until interrupt triggers\n",
 793                 rte_lcore_id());
 794
 795         n = rte_epoll_wait(RTE_EPOLL_PER_THREAD, event, num, -1);
 796         for (i = 0; i < n; i++) {
 797                 data = event[i].epdata.data;
 798                 port_id = ((uintptr_t)data) >> CHAR_BIT;
 799                 queue_id = ((uintptr_t)data) &
 800                         RTE_LEN2MASK(CHAR_BIT, uint8_t);
 801                 RTE_LOG(INFO, L3FWD_POWER,
 802                         "lcore %u is waked up from rx interrupt on"
 803                         " port %d queue %d\n",
 804                         rte_lcore_id(), port_id, queue_id);
 805         }
 806
 807         return 0;
 808 }
 809
 810 static void turn_on_intr(struct lcore_conf *qconf)
 811 {
 812         int i;
 813         struct lcore_rx_queue *rx_queue;
 814         uint8_t port_id, queue_id;
 815
 816         for (i = 0; i < qconf->n_rx_queue; ++i) {
 817                 rx_queue = &(qconf->rx_queue_list[i]);
 818                 port_id = rx_queue->port_id;
 819                 queue_id = rx_queue->queue_id;
 820
 821                 rte_spinlock_lock(&(locks[port_id]));
 822                 rte_eth_dev_rx_intr_enable(port_id, queue_id);
 823                 rte_spinlock_unlock(&(locks[port_id]));
 824         }
 825 }
 826
 827 static int event_register(struct lcore_conf *qconf)
 828 {
 829         struct lcore_rx_queue *rx_queue;
 830         uint8_t portid, queueid;
 831         uint32_t data;
 832         int ret;
 833         int i;
 834
 835         for (i = 0; i < qconf->n_rx_queue; ++i) {
 836                 rx_queue = &(qconf->rx_queue_list[i]);
 837                 portid = rx_queue->port_id;
 838                 queueid = rx_queue->queue_id;
 839                 data = portid << CHAR_BIT | queueid;
 840
 841                 ret = rte_eth_dev_rx_intr_ctl_q(portid, queueid,
 842                                                 RTE_EPOLL_PER_THREAD,
 843                                                 RTE_INTR_EVENT_ADD,
 844                                                 (void *)((uintptr_t)data));
 845                 if (ret)
 846                         return ret;
 847         }
 848
 849         return 0;
 850 }
 851
 852 /* main processing loop */
 853 static int
 854 main_loop(__attribute__((unused)) void *dummy)
 855 {
 856         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 857         unsigned lcore_id;
 858         uint64_t prev_tsc, diff_tsc, cur_tsc;
 859         uint64_t prev_tsc_power = 0, cur_tsc_power, diff_tsc_power;
 860         int i, j, nb_rx;
 861         uint8_t portid, queueid;
 862         struct lcore_conf *qconf;
 863         struct lcore_rx_queue *rx_queue;
 864         enum freq_scale_hint_t lcore_scaleup_hint;
 865         uint32_t lcore_rx_idle_count = 0;
 866         uint32_t lcore_idle_hint = 0;
 867         int intr_en = 0;
 868
 869         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 870
 871         prev_tsc = 0;
 872
 873         lcore_id = rte_lcore_id();
 874         qconf = &lcore_conf[lcore_id];
 875
 876         if (qconf->n_rx_queue == 0) {
 877                 RTE_LOG(INFO, L3FWD_POWER, "lcore %u has nothing to do\n", lcore_id);
 878                 return 0;
 879         }
 880
 881         RTE_LOG(INFO, L3FWD_POWER, "entering main loop on lcore %u\n", lcore_id);
 882
 883         for (i = 0; i < qconf->n_rx_queue; i++) {
 884                 portid = qconf->rx_queue_list[i].port_id;
 885                 queueid = qconf->rx_queue_list[i].queue_id;
 886                 RTE_LOG(INFO, L3FWD_POWER, " -- lcoreid=%u portid=%hhu "
 887                         "rxqueueid=%hhu\n", lcore_id, portid, queueid);
 888         }
 889
 890         /* add into event wait list */
 891         if (event_register(qconf) == 0)
 892                 intr_en = 1;
 893         else
 894                 RTE_LOG(INFO, L3FWD_POWER, "RX interrupt won't enable.\n");
 895
 896         while (1) {
 897                 stats[lcore_id].nb_iteration_looped++;
 898
 899                 cur_tsc = rte_rdtsc();
 900                 cur_tsc_power = cur_tsc;
 901
 902                 /*
 903                  * TX burst queue drain
 904                  */
 905                 diff_tsc = cur_tsc - prev_tsc;
 906                 if (unlikely(diff_tsc > drain_tsc)) {
 907
 908                         /*
 909                          * This could be optimized (use queueid instead of
 910                          * portid), but it is not called so often
 911                          */
 912                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 913                                 if (qconf->tx_mbufs[portid].len == 0)
 914                                         continue;
 915                                 send_burst(&lcore_conf[lcore_id],
 916                                         qconf->tx_mbufs[portid].len,
 917                                         portid);
 918                                 qconf->tx_mbufs[portid].len = 0;
 919                         }
 920
 921                         prev_tsc = cur_tsc;
 922                 }
 923
 924                 diff_tsc_power = cur_tsc_power - prev_tsc_power;
 925                 if (diff_tsc_power > TIMER_RESOLUTION_CYCLES) {
 926                         rte_timer_manage();
 927                         prev_tsc_power = cur_tsc_power;
 928                 }
 929
 930 start_rx:
 931                 /*
 932                  * Read packet from RX queues
 933                  */
 934                 lcore_scaleup_hint = FREQ_CURRENT;
 935                 lcore_rx_idle_count = 0;
 936                 for (i = 0; i < qconf->n_rx_queue; ++i) {
 937                         rx_queue = &(qconf->rx_queue_list[i]);
 938                         rx_queue->idle_hint = 0;
 939                         portid = rx_queue->port_id;
 940                         queueid = rx_queue->queue_id;
 941
 942                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
 943                                                                 MAX_PKT_BURST);
 944
 945                         stats[lcore_id].nb_rx_processed += nb_rx;
 946                         if (unlikely(nb_rx == 0)) {
 947                                 /**
 948                                  * no packet received from rx queue, try to
 949                                  * sleep for a while forcing CPU enter deeper
 950                                  * C states.
 951                                  */
 952                                 rx_queue->zero_rx_packet_count++;
 953
 954                                 if (rx_queue->zero_rx_packet_count <=
 955                                                         MIN_ZERO_POLL_COUNT)
 956                                         continue;
 957
 958                                 rx_queue->idle_hint = power_idle_heuristic(\
 959                                         rx_queue->zero_rx_packet_count);
 960                                 lcore_rx_idle_count++;
 961                         } else {
 962                                 rx_queue->zero_rx_packet_count = 0;
 963
 964                                 /**
 965                                  * do not scale up frequency immediately as
 966                                  * user to kernel space communication is costly
 967                                  * which might impact packet I/O for received
 968                                  * packets.
 969                                  */
 970                                 rx_queue->freq_up_hint =
 971                                         power_freq_scaleup_heuristic(lcore_id,
 972                                                         portid, queueid);
 973                         }
 974
 975                         /* Prefetch first packets */
 976                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 977                                 rte_prefetch0(rte_pktmbuf_mtod(
 978                                                 pkts_burst[j], void *));
 979                         }
 980
 981                         /* Prefetch and forward already prefetched packets */
 982                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 983                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 984                                                 j + PREFETCH_OFFSET], void *));
 985                                 l3fwd_simple_forward(pkts_burst[j], portid,
 986                                                                 qconf);
 987                         }
 988
 989                         /* Forward remaining prefetched packets */
 990                         for (; j < nb_rx; j++) {
 991                                 l3fwd_simple_forward(pkts_burst[j], portid,
 992                                                                 qconf);
 993                         }
 994                 }
 995
 996                 if (likely(lcore_rx_idle_count != qconf->n_rx_queue)) {
 997                         for (i = 1, lcore_scaleup_hint =
 998                                 qconf->rx_queue_list[0].freq_up_hint;
 999                                         i < qconf->n_rx_queue; ++i) {
1000                                 rx_queue = &(qconf->rx_queue_list[i]);
1001                                 if (rx_queue->freq_up_hint >
1002                                                 lcore_scaleup_hint)
1003                                         lcore_scaleup_hint =
1004                                                 rx_queue->freq_up_hint;
1005                         }
1006
1007                         if (lcore_scaleup_hint == FREQ_HIGHEST) {
1008                                 if (rte_power_freq_max)
1009                                         rte_power_freq_max(lcore_id);
1010                         } else if (lcore_scaleup_hint == FREQ_HIGHER) {
1011                                 if (rte_power_freq_up)
1012                                         rte_power_freq_up(lcore_id);
1013                         }
1014                 } else {
1015                         /**
1016                          * All Rx queues empty in recent consecutive polls,
1017                          * sleep in a conservative manner, meaning sleep as
1018                          * less as possible.
1019                          */
1020                         for (i = 1, lcore_idle_hint =
1021                                 qconf->rx_queue_list[0].idle_hint;
1022                                         i < qconf->n_rx_queue; ++i) {
1023                                 rx_queue = &(qconf->rx_queue_list[i]);
1024                                 if (rx_queue->idle_hint < lcore_idle_hint)
1025                                         lcore_idle_hint = rx_queue->idle_hint;
1026                         }
1027
1028                         if (lcore_idle_hint < SUSPEND_THRESHOLD)
1029                                 /**
1030                                  * execute "pause" instruction to avoid context
1031                                  * switch which generally take hundred of
1032                                  * microseconds for short sleep.
1033                                  */
1034                                 rte_delay_us(lcore_idle_hint);
1035                         else {
1036                                 /* suspend until rx interrupt trigges */
1037                                 if (intr_en) {
1038                                         turn_on_intr(qconf);
1039                                         sleep_until_rx_interrupt(
1040                                                 qconf->n_rx_queue);
1041                                 }
1042                                 /* start receiving packets immediately */
1043                                 goto start_rx;
1044                         }
1045                         stats[lcore_id].sleep_time += lcore_idle_hint;
1046                 }
1047         }
1048 }
1049
1050 static int
1051 check_lcore_params(void)
1052 {
1053         uint8_t queue, lcore;
1054         uint16_t i;
1055         int socketid;
1056
1057         for (i = 0; i < nb_lcore_params; ++i) {
1058                 queue = lcore_params[i].queue_id;
1059                 if (queue >= MAX_RX_QUEUE_PER_PORT) {
1060                         printf("invalid queue number: %hhu\n", queue);
1061                         return -1;
1062                 }
1063                 lcore = lcore_params[i].lcore_id;
1064                 if (!rte_lcore_is_enabled(lcore)) {
1065                         printf("error: lcore %hhu is not enabled in lcore "
1066                                                         "mask\n", lcore);
1067                         return -1;
1068                 }
1069                 if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
1070                                                         (numa_on == 0)) {
1071                         printf("warning: lcore %hhu is on socket %d with numa "
1072                                                 "off\n", lcore, socketid);
1073                 }
1074         }
1075         return 0;
1076 }
1077
1078 static int
1079 check_port_config(const unsigned nb_ports)
1080 {
1081         unsigned portid;
1082         uint16_t i;
1083
1084         for (i = 0; i < nb_lcore_params; ++i) {
1085                 portid = lcore_params[i].port_id;
1086                 if ((enabled_port_mask & (1 << portid)) == 0) {
1087                         printf("port %u is not enabled in port mask\n",
1088                                                                 portid);
1089                         return -1;
1090                 }
1091                 if (portid >= nb_ports) {
1092                         printf("port %u is not present on the board\n",
1093                                                                 portid);
1094                         return -1;
1095                 }
1096         }
1097         return 0;
1098 }
1099
1100 static uint8_t
1101 get_port_n_rx_queues(const uint8_t port)
1102 {
1103         int queue = -1;
1104         uint16_t i;
1105
1106         for (i = 0; i < nb_lcore_params; ++i) {
1107                 if (lcore_params[i].port_id == port &&
1108                                 lcore_params[i].queue_id > queue)
1109                         queue = lcore_params[i].queue_id;
1110         }
1111         return (uint8_t)(++queue);
1112 }
1113
1114 static int
1115 init_lcore_rx_queues(void)
1116 {
1117         uint16_t i, nb_rx_queue;
1118         uint8_t lcore;
1119
1120         for (i = 0; i < nb_lcore_params; ++i) {
1121                 lcore = lcore_params[i].lcore_id;
1122                 nb_rx_queue = lcore_conf[lcore].n_rx_queue;
1123                 if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) {
1124                         printf("error: too many queues (%u) for lcore: %u\n",
1125                                 (unsigned)nb_rx_queue + 1, (unsigned)lcore);
1126                         return -1;
1127                 } else {
1128                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id =
1129                                 lcore_params[i].port_id;
1130                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id =
1131                                 lcore_params[i].queue_id;
1132                         lcore_conf[lcore].n_rx_queue++;
1133                 }
1134         }
1135         return 0;
1136 }
1137
1138 /* display usage */
1139 static void
1140 print_usage(const char *prgname)
1141 {
1142         printf ("%s [EAL options] -- -p PORTMASK -P"
1143                 "  [--config (port,queue,lcore)[,(port,queue,lcore]]"
1144                 "  [--enable-jumbo [--max-pkt-len PKTLEN]]\n"
1145                 "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
1146                 "  -P : enable promiscuous mode\n"
1147                 "  --config (port,queue,lcore): rx queues configuration\n"
1148                 "  --no-numa: optional, disable numa awareness\n"
1149                 "  --enable-jumbo: enable jumbo frame"
1150                 " which max packet len is PKTLEN in decimal (64-9600)\n",
1151                 prgname);
1152 }
1153
1154 static int parse_max_pkt_len(const char *pktlen)
1155 {
1156         char *end = NULL;
1157         unsigned long len;
1158
1159         /* parse decimal string */
1160         len = strtoul(pktlen, &end, 10);
1161         if ((pktlen[0] == '\0') || (end == NULL) || (*end != '\0'))
1162                 return -1;
1163
1164         if (len == 0)
1165                 return -1;
1166
1167         return len;
1168 }
1169
1170 static int
1171 parse_portmask(const char *portmask)
1172 {
1173         char *end = NULL;
1174         unsigned long pm;
1175
1176         /* parse hexadecimal string */
1177         pm = strtoul(portmask, &end, 16);
1178         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
1179                 return -1;
1180
1181         if (pm == 0)
1182                 return -1;
1183
1184         return pm;
1185 }
1186
1187 static int
1188 parse_config(const char *q_arg)
1189 {
1190         char s[256];
1191         const char *p, *p0 = q_arg;
1192         char *end;
1193         enum fieldnames {
1194                 FLD_PORT = 0,
1195                 FLD_QUEUE,
1196                 FLD_LCORE,
1197                 _NUM_FLD
1198         };
1199         unsigned long int_fld[_NUM_FLD];
1200         char *str_fld[_NUM_FLD];
1201         int i;
1202         unsigned size;
1203
1204         nb_lcore_params = 0;
1205
1206         while ((p = strchr(p0,'(')) != NULL) {
1207                 ++p;
1208                 if((p0 = strchr(p,')')) == NULL)
1209                         return -1;
1210
1211                 size = p0 - p;
1212                 if(size >= sizeof(s))
1213                         return -1;
1214
1215                 snprintf(s, sizeof(s), "%.*s", size, p);
1216                 if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') !=
1217                                                                 _NUM_FLD)
1218                         return -1;
1219                 for (i = 0; i < _NUM_FLD; i++){
1220                         errno = 0;
1221                         int_fld[i] = strtoul(str_fld[i], &end, 0);
1222                         if (errno != 0 || end == str_fld[i] || int_fld[i] >
1223                                                                         255)
1224                                 return -1;
1225                 }
1226                 if (nb_lcore_params >= MAX_LCORE_PARAMS) {
1227                         printf("exceeded max number of lcore params: %hu\n",
1228                                 nb_lcore_params);
1229                         return -1;
1230                 }
1231                 lcore_params_array[nb_lcore_params].port_id =
1232                                 (uint8_t)int_fld[FLD_PORT];
1233                 lcore_params_array[nb_lcore_params].queue_id =
1234                                 (uint8_t)int_fld[FLD_QUEUE];
1235                 lcore_params_array[nb_lcore_params].lcore_id =
1236                                 (uint8_t)int_fld[FLD_LCORE];
1237                 ++nb_lcore_params;
1238         }
1239         lcore_params = lcore_params_array;
1240
1241         return 0;
1242 }
1243
1244 /* Parse the argument given in the command line of the application */
1245 static int
1246 parse_args(int argc, char **argv)
1247 {
1248         int opt, ret;
1249         char **argvopt;
1250         int option_index;
1251         char *prgname = argv[0];
1252         static struct option lgopts[] = {
1253                 {"config", 1, 0, 0},
1254                 {"no-numa", 0, 0, 0},
1255                 {"enable-jumbo", 0, 0, 0},
1256                 {NULL, 0, 0, 0}
1257         };
1258
1259         argvopt = argv;
1260
1261         while ((opt = getopt_long(argc, argvopt, "p:P",
1262                                 lgopts, &option_index)) != EOF) {
1263
1264                 switch (opt) {
1265                 /* portmask */
1266                 case 'p':
1267                         enabled_port_mask = parse_portmask(optarg);
1268                         if (enabled_port_mask == 0) {
1269                                 printf("invalid portmask\n");
1270                                 print_usage(prgname);
1271                                 return -1;
1272                         }
1273                         break;
1274                 case 'P':
1275                         printf("Promiscuous mode selected\n");
1276                         promiscuous_on = 1;
1277                         break;
1278
1279                 /* long options */
1280                 case 0:
1281                         if (!strncmp(lgopts[option_index].name, "config", 6)) {
1282                                 ret = parse_config(optarg);
1283                                 if (ret) {
1284                                         printf("invalid config\n");
1285                                         print_usage(prgname);
1286                                         return -1;
1287                                 }
1288                         }
1289
1290                         if (!strncmp(lgopts[option_index].name,
1291                                                 "no-numa", 7)) {
1292                                 printf("numa is disabled \n");
1293                                 numa_on = 0;
1294                         }
1295
1296                         if (!strncmp(lgopts[option_index].name,
1297                                         "enable-jumbo", 12)) {
1298                                 struct option lenopts =
1299                                         {"max-pkt-len", required_argument, \
1300                                                                         0, 0};
1301
1302                                 printf("jumbo frame is enabled \n");
1303                                 port_conf.rxmode.jumbo_frame = 1;
1304
1305                                 /**
1306                                  * if no max-pkt-len set, use the default value
1307                                  * ETHER_MAX_LEN
1308                                  */
1309                                 if (0 == getopt_long(argc, argvopt, "",
1310                                                 &lenopts, &option_index)) {
1311                                         ret = parse_max_pkt_len(optarg);
1312                                         if ((ret < 64) ||
1313                                                 (ret > MAX_JUMBO_PKT_LEN)){
1314                                                 printf("invalid packet "
1315                                                                 "length\n");
1316                                                 print_usage(prgname);
1317                                                 return -1;
1318                                         }
1319                                         port_conf.rxmode.max_rx_pkt_len = ret;
1320                                 }
1321                                 printf("set jumbo frame "
1322                                         "max packet length to %u\n",
1323                                 (unsigned int)port_conf.rxmode.max_rx_pkt_len);
1324                         }
1325
1326                         break;
1327
1328                 default:
1329                         print_usage(prgname);
1330                         return -1;
1331                 }
1332         }
1333
1334         if (optind >= 0)
1335                 argv[optind-1] = prgname;
1336
1337         ret = optind-1;
1338         optind = 0; /* reset getopt lib */
1339         return ret;
1340 }
1341
1342 static void
1343 print_ethaddr(const char *name, const struct ether_addr *eth_addr)
1344 {
1345         char buf[ETHER_ADDR_FMT_SIZE];
1346         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
1347         printf("%s%s", name, buf);
1348 }
1349
1350 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
1351 static void
1352 setup_hash(int socketid)
1353 {
1354         struct rte_hash_parameters ipv4_l3fwd_hash_params = {
1355                 .name = NULL,
1356                 .entries = L3FWD_HASH_ENTRIES,
1357                 .key_len = sizeof(struct ipv4_5tuple),
1358                 .hash_func = DEFAULT_HASH_FUNC,
1359                 .hash_func_init_val = 0,
1360         };
1361
1362         struct rte_hash_parameters ipv6_l3fwd_hash_params = {
1363                 .name = NULL,
1364                 .entries = L3FWD_HASH_ENTRIES,
1365                 .key_len = sizeof(struct ipv6_5tuple),
1366                 .hash_func = DEFAULT_HASH_FUNC,
1367                 .hash_func_init_val = 0,
1368         };
1369
1370         unsigned i;
1371         int ret;
1372         char s[64];
1373
1374         /* create ipv4 hash */
1375         rte_snprintf(s, sizeof(s), "ipv4_l3fwd_hash_%d", socketid);
1376         ipv4_l3fwd_hash_params.name = s;
1377         ipv4_l3fwd_hash_params.socket_id = socketid;
1378         ipv4_l3fwd_lookup_struct[socketid] =
1379                 rte_hash_create(&ipv4_l3fwd_hash_params);
1380         if (ipv4_l3fwd_lookup_struct[socketid] == NULL)
1381                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
1382                                 "socket %d\n", socketid);
1383
1384         /* create ipv6 hash */
1385         rte_snprintf(s, sizeof(s), "ipv6_l3fwd_hash_%d", socketid);
1386         ipv6_l3fwd_hash_params.name = s;
1387         ipv6_l3fwd_hash_params.socket_id = socketid;
1388         ipv6_l3fwd_lookup_struct[socketid] =
1389                 rte_hash_create(&ipv6_l3fwd_hash_params);
1390         if (ipv6_l3fwd_lookup_struct[socketid] == NULL)
1391                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
1392                                 "socket %d\n", socketid);
1393
1394
1395         /* populate the ipv4 hash */
1396         for (i = 0; i < IPV4_L3FWD_NUM_ROUTES; i++) {
1397                 ret = rte_hash_add_key (ipv4_l3fwd_lookup_struct[socketid],
1398                                 (void *) &ipv4_l3fwd_route_array[i].key);
1399                 if (ret < 0) {
1400                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
1401                                 "l3fwd hash on socket %d\n", i, socketid);
1402                 }
1403                 ipv4_l3fwd_out_if[ret] = ipv4_l3fwd_route_array[i].if_out;
1404                 printf("Hash: Adding key\n");
1405                 print_ipv4_key(ipv4_l3fwd_route_array[i].key);
1406         }
1407
1408         /* populate the ipv6 hash */
1409         for (i = 0; i < IPV6_L3FWD_NUM_ROUTES; i++) {
1410                 ret = rte_hash_add_key (ipv6_l3fwd_lookup_struct[socketid],
1411                                 (void *) &ipv6_l3fwd_route_array[i].key);
1412                 if (ret < 0) {
1413                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
1414                                 "l3fwd hash on socket %d\n", i, socketid);
1415                 }
1416                 ipv6_l3fwd_out_if[ret] = ipv6_l3fwd_route_array[i].if_out;
1417                 printf("Hash: Adding key\n");
1418                 print_ipv6_key(ipv6_l3fwd_route_array[i].key);
1419         }
1420 }
1421 #endif
1422
1423 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
1424 static void
1425 setup_lpm(int socketid)
1426 {
1427         unsigned i;
1428         int ret;
1429         char s[64];
1430
1431         /* create the LPM table */
1432         snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
1433         ipv4_l3fwd_lookup_struct[socketid] = rte_lpm_create(s, socketid,
1434                                 IPV4_L3FWD_LPM_MAX_RULES, 0);
1435         if (ipv4_l3fwd_lookup_struct[socketid] == NULL)
1436                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
1437                                 " on socket %d\n", socketid);
1438
1439         /* populate the LPM table */
1440         for (i = 0; i < IPV4_L3FWD_NUM_ROUTES; i++) {
1441                 ret = rte_lpm_add(ipv4_l3fwd_lookup_struct[socketid],
1442                         ipv4_l3fwd_route_array[i].ip,
1443                         ipv4_l3fwd_route_array[i].depth,
1444                         ipv4_l3fwd_route_array[i].if_out);
1445
1446                 if (ret < 0) {
1447                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the "
1448                                 "l3fwd LPM table on socket %d\n",
1449                                 i, socketid);
1450                 }
1451
1452                 printf("LPM: Adding route 0x%08x / %d (%d)\n",
1453                         (unsigned)ipv4_l3fwd_route_array[i].ip,
1454                         ipv4_l3fwd_route_array[i].depth,
1455                         ipv4_l3fwd_route_array[i].if_out);
1456         }
1457 }
1458 #endif
1459
1460 static int
1461 init_mem(unsigned nb_mbuf)
1462 {
1463         struct lcore_conf *qconf;
1464         int socketid;
1465         unsigned lcore_id;
1466         char s[64];
1467
1468         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1469                 if (rte_lcore_is_enabled(lcore_id) == 0)
1470                         continue;
1471
1472                 if (numa_on)
1473                         socketid = rte_lcore_to_socket_id(lcore_id);
1474                 else
1475                         socketid = 0;
1476
1477                 if (socketid >= NB_SOCKETS) {
1478                         rte_exit(EXIT_FAILURE, "Socket %d of lcore %u is "
1479                                         "out of range %d\n", socketid,
1480                                                 lcore_id, NB_SOCKETS);
1481                 }
1482                 if (pktmbuf_pool[socketid] == NULL) {
1483                         snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
1484                         pktmbuf_pool[socketid] =
1485                                 rte_pktmbuf_pool_create(s, nb_mbuf,
1486                                         MEMPOOL_CACHE_SIZE, 0,
1487                                         RTE_MBUF_DEFAULT_BUF_SIZE,
1488                                         socketid);
1489                         if (pktmbuf_pool[socketid] == NULL)
1490                                 rte_exit(EXIT_FAILURE,
1491                                         "Cannot init mbuf pool on socket %d\n",
1492                                                                 socketid);
1493                         else
1494                                 printf("Allocated mbuf pool on socket %d\n",
1495                                                                 socketid);
1496
1497 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
1498                         setup_lpm(socketid);
1499 #else
1500                         setup_hash(socketid);
1501 #endif
1502                 }
1503                 qconf = &lcore_conf[lcore_id];
1504                 qconf->ipv4_lookup_struct = ipv4_l3fwd_lookup_struct[socketid];
1505 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
1506                 qconf->ipv6_lookup_struct = ipv6_l3fwd_lookup_struct[socketid];
1507 #endif
1508         }
1509         return 0;
1510 }
1511
1512 /* Check the link status of all ports in up to 9s, and print them finally */
1513 static void
1514 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
1515 {
1516 #define CHECK_INTERVAL 100 /* 100ms */
1517 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
1518         uint8_t portid, count, all_ports_up, print_flag = 0;
1519         struct rte_eth_link link;
1520
1521         printf("\nChecking link status");
1522         fflush(stdout);
1523         for (count = 0; count <= MAX_CHECK_TIME; count++) {
1524                 all_ports_up = 1;
1525                 for (portid = 0; portid < port_num; portid++) {
1526                         if ((port_mask & (1 << portid)) == 0)
1527                                 continue;
1528                         memset(&link, 0, sizeof(link));
1529                         rte_eth_link_get_nowait(portid, &link);
1530                         /* print link status if flag set */
1531                         if (print_flag == 1) {
1532                                 if (link.link_status)
1533                                         printf("Port %d Link Up - speed %u "
1534                                                 "Mbps - %s\n", (uint8_t)portid,
1535                                                 (unsigned)link.link_speed,
1536                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
1537                                         ("full-duplex") : ("half-duplex\n"));
1538                                 else
1539                                         printf("Port %d Link Down\n",
1540                                                 (uint8_t)portid);
1541                                 continue;
1542                         }
1543                         /* clear all_ports_up flag if any link down */
1544                         if (link.link_status == 0) {
1545                                 all_ports_up = 0;
1546                                 break;
1547                         }
1548                 }
1549                 /* after finally printing all link status, get out */
1550                 if (print_flag == 1)
1551                         break;
1552
1553                 if (all_ports_up == 0) {
1554                         printf(".");
1555                         fflush(stdout);
1556                         rte_delay_ms(CHECK_INTERVAL);
1557                 }
1558
1559                 /* set the print_flag if all ports up or timeout */
1560                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
1561                         print_flag = 1;
1562                         printf("done\n");
1563                 }
1564         }
1565 }
1566
1567 int
1568 main(int argc, char **argv)
1569 {
1570         struct lcore_conf *qconf;
1571         struct rte_eth_dev_info dev_info;
1572         struct rte_eth_txconf *txconf;
1573         int ret;
1574         unsigned nb_ports;
1575         uint16_t queueid;
1576         unsigned lcore_id;
1577         uint64_t hz;
1578         uint32_t n_tx_queue, nb_lcores;
1579         uint32_t dev_rxq_num, dev_txq_num;
1580         uint8_t portid, nb_rx_queue, queue, socketid;
1581
1582         /* catch SIGINT and restore cpufreq governor to ondemand */
1583         signal(SIGINT, signal_exit_now);
1584
1585         /* init EAL */
1586         ret = rte_eal_init(argc, argv);
1587         if (ret < 0)
1588                 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
1589         argc -= ret;
1590         argv += ret;
1591
1592         /* init RTE timer library to be used late */
1593         rte_timer_subsystem_init();
1594
1595         /* parse application arguments (after the EAL ones) */
1596         ret = parse_args(argc, argv);
1597         if (ret < 0)
1598                 rte_exit(EXIT_FAILURE, "Invalid L3FWD parameters\n");
1599
1600         if (check_lcore_params() < 0)
1601                 rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");
1602
1603         ret = init_lcore_rx_queues();
1604         if (ret < 0)
1605                 rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");
1606
1607
1608         nb_ports = rte_eth_dev_count();
1609         if (nb_ports > RTE_MAX_ETHPORTS)
1610                 nb_ports = RTE_MAX_ETHPORTS;
1611
1612         if (check_port_config(nb_ports) < 0)
1613                 rte_exit(EXIT_FAILURE, "check_port_config failed\n");
1614
1615         nb_lcores = rte_lcore_count();
1616
1617         /* initialize all ports */
1618         for (portid = 0; portid < nb_ports; portid++) {
1619                 /* skip ports that are not enabled */
1620                 if ((enabled_port_mask & (1 << portid)) == 0) {
1621                         printf("\nSkipping disabled port %d\n", portid);
1622                         continue;
1623                 }
1624
1625                 /* init port */
1626                 printf("Initializing port %d ... ", portid );
1627                 fflush(stdout);
1628
1629                 rte_eth_dev_info_get(portid, &dev_info);
1630                 dev_rxq_num = dev_info.max_rx_queues;
1631                 dev_txq_num = dev_info.max_tx_queues;
1632
1633                 nb_rx_queue = get_port_n_rx_queues(portid);
1634                 if (nb_rx_queue > dev_rxq_num)
1635                         rte_exit(EXIT_FAILURE,
1636                                 "Cannot configure not existed rxq: "
1637                                 "port=%d\n", portid);
1638
1639                 n_tx_queue = nb_lcores;
1640                 if (n_tx_queue > dev_txq_num)
1641                         n_tx_queue = dev_txq_num;
1642                 printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
1643                         nb_rx_queue, (unsigned)n_tx_queue );
1644                 ret = rte_eth_dev_configure(portid, nb_rx_queue,
1645                                         (uint16_t)n_tx_queue, &port_conf);
1646                 if (ret < 0)
1647                         rte_exit(EXIT_FAILURE, "Cannot configure device: "
1648                                         "err=%d, port=%d\n", ret, portid);
1649
1650                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
1651                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
1652                 printf(", ");
1653
1654                 /* init memory */
1655                 ret = init_mem(NB_MBUF);
1656                 if (ret < 0)
1657                         rte_exit(EXIT_FAILURE, "init_mem failed\n");
1658
1659                 /* init one TX queue per couple (lcore,port) */
1660                 queueid = 0;
1661                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1662                         if (rte_lcore_is_enabled(lcore_id) == 0)
1663                                 continue;
1664
1665                         if (queueid >= dev_txq_num)
1666                                 continue;
1667
1668                         if (numa_on)
1669                                 socketid = \
1670                                 (uint8_t)rte_lcore_to_socket_id(lcore_id);
1671                         else
1672                                 socketid = 0;
1673
1674                         printf("txq=%u,%d,%d ", lcore_id, queueid, socketid);
1675                         fflush(stdout);
1676
1677                         rte_eth_dev_info_get(portid, &dev_info);
1678                         txconf = &dev_info.default_txconf;
1679                         if (port_conf.rxmode.jumbo_frame)
1680                                 txconf->txq_flags = 0;
1681                         ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
1682                                                      socketid, txconf);
1683                         if (ret < 0)
1684                                 rte_exit(EXIT_FAILURE,
1685                                         "rte_eth_tx_queue_setup: err=%d, "
1686                                                 "port=%d\n", ret, portid);
1687
1688                         qconf = &lcore_conf[lcore_id];
1689                         qconf->tx_queue_id[portid] = queueid;
1690                         queueid++;
1691                 }
1692                 printf("\n");
1693         }
1694
1695         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1696                 if (rte_lcore_is_enabled(lcore_id) == 0)
1697                         continue;
1698
1699                 /* init power management library */
1700                 ret = rte_power_init(lcore_id);
1701                 if (ret)
1702                         RTE_LOG(ERR, POWER,
1703                                 "Library initialization failed on core %u\n", lcore_id);
1704
1705                 /* init timer structures for each enabled lcore */
1706                 rte_timer_init(&power_timers[lcore_id]);
1707                 hz = rte_get_timer_hz();
1708                 rte_timer_reset(&power_timers[lcore_id],
1709                         hz/TIMER_NUMBER_PER_SECOND, SINGLE, lcore_id,
1710                                                 power_timer_cb, NULL);
1711
1712                 qconf = &lcore_conf[lcore_id];
1713                 printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
1714                 fflush(stdout);
1715                 /* init RX queues */
1716                 for(queue = 0; queue < qconf->n_rx_queue; ++queue) {
1717                         portid = qconf->rx_queue_list[queue].port_id;
1718                         queueid = qconf->rx_queue_list[queue].queue_id;
1719
1720                         if (numa_on)
1721                                 socketid = \
1722                                 (uint8_t)rte_lcore_to_socket_id(lcore_id);
1723                         else
1724                                 socketid = 0;
1725
1726                         printf("rxq=%d,%d,%d ", portid, queueid, socketid);
1727                         fflush(stdout);
1728
1729                         ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
1730                                 socketid, NULL,
1731                                 pktmbuf_pool[socketid]);
1732                         if (ret < 0)
1733                                 rte_exit(EXIT_FAILURE,
1734                                         "rte_eth_rx_queue_setup: err=%d, "
1735                                                 "port=%d\n", ret, portid);
1736                 }
1737         }
1738
1739         printf("\n");
1740
1741         /* start ports */
1742         for (portid = 0; portid < nb_ports; portid++) {
1743                 if ((enabled_port_mask & (1 << portid)) == 0) {
1744                         continue;
1745                 }
1746                 /* Start device */
1747                 ret = rte_eth_dev_start(portid);
1748                 if (ret < 0)
1749                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, "
1750                                                 "port=%d\n", ret, portid);
1751                 /*
1752                  * If enabled, put device in promiscuous mode.
1753                  * This allows IO forwarding mode to forward packets
1754                  * to itself through 2 cross-connected  ports of the
1755                  * target machine.
1756                  */
1757                 if (promiscuous_on)
1758                         rte_eth_promiscuous_enable(portid);
1759                 /* initialize spinlock for each port */
1760                 rte_spinlock_init(&(locks[portid]));
1761         }
1762
1763         check_all_ports_link_status((uint8_t)nb_ports, enabled_port_mask);
1764
1765         /* launch per-lcore init on every lcore */
1766         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1767         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1768                 if (rte_eal_wait_lcore(lcore_id) < 0)
1769                         return -1;
1770         }
1771
1772         return 0;
1773 }