examples/l3fwd/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
  45 #include <rte_common.h>
  46 #include <rte_vect.h>
  47 #include <rte_byteorder.h>
  48 #include <rte_log.h>
  49 #include <rte_memory.h>
  50 #include <rte_memcpy.h>
  51 #include <rte_memzone.h>
  52 #include <rte_eal.h>
  53 #include <rte_per_lcore.h>
  54 #include <rte_launch.h>
  55 #include <rte_atomic.h>
  56 #include <rte_cycles.h>
  57 #include <rte_prefetch.h>
  58 #include <rte_lcore.h>
  59 #include <rte_per_lcore.h>
  60 #include <rte_branch_prediction.h>
  61 #include <rte_interrupts.h>
  62 #include <rte_pci.h>
  63 #include <rte_random.h>
  64 #include <rte_debug.h>
  65 #include <rte_ether.h>
  66 #include <rte_ethdev.h>
  67 #include <rte_ring.h>
  68 #include <rte_mempool.h>
  69 #include <rte_mbuf.h>
  70 #include <rte_ip.h>
  71 #include <rte_tcp.h>
  72 #include <rte_udp.h>
  73 #include <rte_string_fns.h>
  74
  75 #define APP_LOOKUP_EXACT_MATCH          0
  76 #define APP_LOOKUP_LPM                  1
  77 #define DO_RFC_1812_CHECKS
  78
  79 #ifndef APP_LOOKUP_METHOD
  80 #define APP_LOOKUP_METHOD             APP_LOOKUP_LPM
  81 #endif
  82
  83 /*
  84  *  When set to zero, simple forwaring path is eanbled.
  85  *  When set to one, optimized forwarding path is enabled.
  86  *  Note that LPM optimisation path uses SSE4.1 instructions.
  87  */
  88 #if ((APP_LOOKUP_METHOD == APP_LOOKUP_LPM) && !defined(__SSE4_1__))
  89 #define ENABLE_MULTI_BUFFER_OPTIMIZE    0
  90 #else
  91 #define ENABLE_MULTI_BUFFER_OPTIMIZE    1
  92 #endif
  93
  94 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
  95 #include <rte_hash.h>
  96 #elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
  97 #include <rte_lpm.h>
  98 #include <rte_lpm6.h>
  99 #else
 100 #error "APP_LOOKUP_METHOD set to incorrect value"
 101 #endif
 102
 103 #ifndef IPv6_BYTES
 104 #define IPv6_BYTES_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"\
 105                        "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
 106 #define IPv6_BYTES(addr) \
 107         addr[0],  addr[1], addr[2],  addr[3], \
 108         addr[4],  addr[5], addr[6],  addr[7], \
 109         addr[8],  addr[9], addr[10], addr[11],\
 110         addr[12], addr[13],addr[14], addr[15]
 111 #endif
 112
 113
 114 #define RTE_LOGTYPE_L3FWD RTE_LOGTYPE_USER1
 115
 116 #define MAX_JUMBO_PKT_LEN  9600
 117
 118 #define IPV6_ADDR_LEN 16
 119
 120 #define MEMPOOL_CACHE_SIZE 256
 121
 122 #define MBUF_DATA_SIZE (2048 + RTE_PKTMBUF_HEADROOM)
 123
 124 /*
 125  * This expression is used to calculate the number of mbufs needed depending on user input, taking
 126  *  into account memory for rx and tx hardware rings, cache per lcore and mtable per port per lcore.
 127  *  RTE_MAX is used to ensure that NB_MBUF never goes below a minimum value of 8192
 128  */
 129
 130 #define NB_MBUF RTE_MAX (                                                                                                                                       \
 131                                 (nb_ports*nb_rx_queue*RTE_TEST_RX_DESC_DEFAULT +                                                        \
 132                                 nb_ports*nb_lcores*MAX_PKT_BURST +                                                                                      \
 133                                 nb_ports*n_tx_queue*RTE_TEST_TX_DESC_DEFAULT +                                                          \
 134                                 nb_lcores*MEMPOOL_CACHE_SIZE),                                                                                          \
 135                                 (unsigned)8192)
 136
 137 #define MAX_PKT_BURST     32
 138 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 139
 140 /*
 141  * Try to avoid TX buffering if we have at least MAX_TX_BURST packets to send.
 142  */
 143 #define MAX_TX_BURST    (MAX_PKT_BURST / 2)
 144
 145 #define NB_SOCKETS 8
 146
 147 /* Configure how many packets ahead to prefetch, when reading packets */
 148 #define PREFETCH_OFFSET 3
 149
 150 /* Used to mark destination port as 'invalid'. */
 151 #define BAD_PORT        ((uint16_t)-1)
 152
 153 #define FWDSTEP 4
 154
 155 /*
 156  * Configurable number of RX/TX ring descriptors
 157  */
 158 #define RTE_TEST_RX_DESC_DEFAULT 128
 159 #define RTE_TEST_TX_DESC_DEFAULT 512
 160 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
 161 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
 162
 163 /* ethernet addresses of ports */
 164 static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
 165
 166 static __m128i val_eth[RTE_MAX_ETHPORTS];
 167
 168 /* replace first 12B of the ethernet header. */
 169 #define MASK_ETH        0x3f
 170
 171 /* mask of enabled ports */
 172 static uint32_t enabled_port_mask = 0;
 173 static int promiscuous_on = 0; /**< Ports set in promiscuous mode off by default. */
 174 static int numa_on = 1; /**< NUMA is enabled by default. */
 175
 176 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 177 static int ipv6 = 0; /**< ipv6 is false by default. */
 178 #endif
 179
 180 struct mbuf_table {
 181         uint16_t len;
 182         struct rte_mbuf *m_table[MAX_PKT_BURST];
 183 };
 184
 185 struct lcore_rx_queue {
 186         uint8_t port_id;
 187         uint8_t queue_id;
 188 } __rte_cache_aligned;
 189
 190 #define MAX_RX_QUEUE_PER_LCORE 16
 191 #define MAX_TX_QUEUE_PER_PORT RTE_MAX_ETHPORTS
 192 #define MAX_RX_QUEUE_PER_PORT 128
 193
 194 #define MAX_LCORE_PARAMS 1024
 195 struct lcore_params {
 196         uint8_t port_id;
 197         uint8_t queue_id;
 198         uint8_t lcore_id;
 199 } __rte_cache_aligned;
 200
 201 static struct lcore_params lcore_params_array[MAX_LCORE_PARAMS];
 202 static struct lcore_params lcore_params_array_default[] = {
 203         {0, 0, 2},
 204         {0, 1, 2},
 205         {0, 2, 2},
 206         {1, 0, 2},
 207         {1, 1, 2},
 208         {1, 2, 2},
 209         {2, 0, 2},
 210         {3, 0, 3},
 211         {3, 1, 3},
 212 };
 213
 214 static struct lcore_params * lcore_params = lcore_params_array_default;
 215 static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
 216                                 sizeof(lcore_params_array_default[0]);
 217
 218 static struct rte_eth_conf port_conf = {
 219         .rxmode = {
 220                 .mq_mode = ETH_MQ_RX_RSS,
 221                 .max_rx_pkt_len = ETHER_MAX_LEN,
 222                 .split_hdr_size = 0,
 223                 .header_split   = 0, /**< Header Split disabled */
 224                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
 225                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 226                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 227                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
 228         },
 229         .rx_adv_conf = {
 230                 .rss_conf = {
 231                         .rss_key = NULL,
 232                         .rss_hf = ETH_RSS_IP,
 233                 },
 234         },
 235         .txmode = {
 236                 .mq_mode = ETH_MQ_TX_NONE,
 237         },
 238 };
 239
 240 static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 241
 242 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 243
 244 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
 245 #include <rte_hash_crc.h>
 246 #define DEFAULT_HASH_FUNC       rte_hash_crc
 247 #else
 248 #include <rte_jhash.h>
 249 #define DEFAULT_HASH_FUNC       rte_jhash
 250 #endif
 251
 252 struct ipv4_5tuple {
 253         uint32_t ip_dst;
 254         uint32_t ip_src;
 255         uint16_t port_dst;
 256         uint16_t port_src;
 257         uint8_t  proto;
 258 } __attribute__((__packed__));
 259
 260 union ipv4_5tuple_host {
 261         struct {
 262                 uint8_t  pad0;
 263                 uint8_t  proto;
 264                 uint16_t pad1;
 265                 uint32_t ip_src;
 266                 uint32_t ip_dst;
 267                 uint16_t port_src;
 268                 uint16_t port_dst;
 269         };
 270         __m128i xmm;
 271 };
 272
 273 #define XMM_NUM_IN_IPV6_5TUPLE 3
 274
 275 struct ipv6_5tuple {
 276         uint8_t  ip_dst[IPV6_ADDR_LEN];
 277         uint8_t  ip_src[IPV6_ADDR_LEN];
 278         uint16_t port_dst;
 279         uint16_t port_src;
 280         uint8_t  proto;
 281 } __attribute__((__packed__));
 282
 283 union ipv6_5tuple_host {
 284         struct {
 285                 uint16_t pad0;
 286                 uint8_t  proto;
 287                 uint8_t  pad1;
 288                 uint8_t  ip_src[IPV6_ADDR_LEN];
 289                 uint8_t  ip_dst[IPV6_ADDR_LEN];
 290                 uint16_t port_src;
 291                 uint16_t port_dst;
 292                 uint64_t reserve;
 293         };
 294         __m128i xmm[XMM_NUM_IN_IPV6_5TUPLE];
 295 };
 296
 297 struct ipv4_l3fwd_route {
 298         struct ipv4_5tuple key;
 299         uint8_t if_out;
 300 };
 301
 302 struct ipv6_l3fwd_route {
 303         struct ipv6_5tuple key;
 304         uint8_t if_out;
 305 };
 306
 307 static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
 308         {{IPv4(101,0,0,0), IPv4(100,10,0,1),  101, 11, IPPROTO_TCP}, 0},
 309         {{IPv4(201,0,0,0), IPv4(200,20,0,1),  102, 12, IPPROTO_TCP}, 1},
 310         {{IPv4(111,0,0,0), IPv4(100,30,0,1),  101, 11, IPPROTO_TCP}, 2},
 311         {{IPv4(211,0,0,0), IPv4(200,40,0,1),  102, 12, IPPROTO_TCP}, 3},
 312 };
 313
 314 static struct ipv6_l3fwd_route ipv6_l3fwd_route_array[] = {
 315         {{
 316         {0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
 317         {0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
 318         101, 11, IPPROTO_TCP}, 0},
 319
 320         {{
 321         {0xfe, 0x90, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
 322         {0xfe, 0x90, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
 323         102, 12, IPPROTO_TCP}, 1},
 324
 325         {{
 326         {0xfe, 0xa0, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
 327         {0xfe, 0xa0, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
 328         101, 11, IPPROTO_TCP}, 2},
 329
 330         {{
 331         {0xfe, 0xb0, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
 332         {0xfe, 0xb0, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
 333         102, 12, IPPROTO_TCP}, 3},
 334 };
 335
 336 typedef struct rte_hash lookup_struct_t;
 337 static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
 338 static lookup_struct_t *ipv6_l3fwd_lookup_struct[NB_SOCKETS];
 339
 340 #ifdef RTE_ARCH_X86_64
 341 /* default to 4 million hash entries (approx) */
 342 #define L3FWD_HASH_ENTRIES              1024*1024*4
 343 #else
 344 /* 32-bit has less address-space for hugepage memory, limit to 1M entries */
 345 #define L3FWD_HASH_ENTRIES              1024*1024*1
 346 #endif
 347 #define HASH_ENTRY_NUMBER_DEFAULT       4
 348
 349 static uint32_t hash_entry_number = HASH_ENTRY_NUMBER_DEFAULT;
 350
 351 static inline uint32_t
 352 ipv4_hash_crc(const void *data, __rte_unused uint32_t data_len,
 353         uint32_t init_val)
 354 {
 355         const union ipv4_5tuple_host *k;
 356         uint32_t t;
 357         const uint32_t *p;
 358
 359         k = data;
 360         t = k->proto;
 361         p = (const uint32_t *)&k->port_src;
 362
 363 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
 364         init_val = rte_hash_crc_4byte(t, init_val);
 365         init_val = rte_hash_crc_4byte(k->ip_src, init_val);
 366         init_val = rte_hash_crc_4byte(k->ip_dst, init_val);
 367         init_val = rte_hash_crc_4byte(*p, init_val);
 368 #else /* RTE_MACHINE_CPUFLAG_SSE4_2 */
 369         init_val = rte_jhash_1word(t, init_val);
 370         init_val = rte_jhash_1word(k->ip_src, init_val);
 371         init_val = rte_jhash_1word(k->ip_dst, init_val);
 372         init_val = rte_jhash_1word(*p, init_val);
 373 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
 374         return (init_val);
 375 }
 376
 377 static inline uint32_t
 378 ipv6_hash_crc(const void *data, __rte_unused uint32_t data_len, uint32_t init_val)
 379 {
 380         const union ipv6_5tuple_host *k;
 381         uint32_t t;
 382         const uint32_t *p;
 383 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
 384         const uint32_t  *ip_src0, *ip_src1, *ip_src2, *ip_src3;
 385         const uint32_t  *ip_dst0, *ip_dst1, *ip_dst2, *ip_dst3;
 386 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
 387
 388         k = data;
 389         t = k->proto;
 390         p = (const uint32_t *)&k->port_src;
 391
 392 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
 393         ip_src0 = (const uint32_t *) k->ip_src;
 394         ip_src1 = (const uint32_t *)(k->ip_src+4);
 395         ip_src2 = (const uint32_t *)(k->ip_src+8);
 396         ip_src3 = (const uint32_t *)(k->ip_src+12);
 397         ip_dst0 = (const uint32_t *) k->ip_dst;
 398         ip_dst1 = (const uint32_t *)(k->ip_dst+4);
 399         ip_dst2 = (const uint32_t *)(k->ip_dst+8);
 400         ip_dst3 = (const uint32_t *)(k->ip_dst+12);
 401         init_val = rte_hash_crc_4byte(t, init_val);
 402         init_val = rte_hash_crc_4byte(*ip_src0, init_val);
 403         init_val = rte_hash_crc_4byte(*ip_src1, init_val);
 404         init_val = rte_hash_crc_4byte(*ip_src2, init_val);
 405         init_val = rte_hash_crc_4byte(*ip_src3, init_val);
 406         init_val = rte_hash_crc_4byte(*ip_dst0, init_val);
 407         init_val = rte_hash_crc_4byte(*ip_dst1, init_val);
 408         init_val = rte_hash_crc_4byte(*ip_dst2, init_val);
 409         init_val = rte_hash_crc_4byte(*ip_dst3, init_val);
 410         init_val = rte_hash_crc_4byte(*p, init_val);
 411 #else /* RTE_MACHINE_CPUFLAG_SSE4_2 */
 412         init_val = rte_jhash_1word(t, init_val);
 413         init_val = rte_jhash(k->ip_src, sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
 414         init_val = rte_jhash(k->ip_dst, sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
 415         init_val = rte_jhash_1word(*p, init_val);
 416 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
 417         return (init_val);
 418 }
 419
 420 #define IPV4_L3FWD_NUM_ROUTES \
 421         (sizeof(ipv4_l3fwd_route_array) / sizeof(ipv4_l3fwd_route_array[0]))
 422
 423 #define IPV6_L3FWD_NUM_ROUTES \
 424         (sizeof(ipv6_l3fwd_route_array) / sizeof(ipv6_l3fwd_route_array[0]))
 425
 426 static uint8_t ipv4_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 427 static uint8_t ipv6_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 428
 429 #endif
 430
 431 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 432 struct ipv4_l3fwd_route {
 433         uint32_t ip;
 434         uint8_t  depth;
 435         uint8_t  if_out;
 436 };
 437
 438 struct ipv6_l3fwd_route {
 439         uint8_t ip[16];
 440         uint8_t  depth;
 441         uint8_t  if_out;
 442 };
 443
 444 static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
 445         {IPv4(1,1,1,0), 24, 0},
 446         {IPv4(2,1,1,0), 24, 1},
 447         {IPv4(3,1,1,0), 24, 2},
 448         {IPv4(4,1,1,0), 24, 3},
 449         {IPv4(5,1,1,0), 24, 4},
 450         {IPv4(6,1,1,0), 24, 5},
 451         {IPv4(7,1,1,0), 24, 6},
 452         {IPv4(8,1,1,0), 24, 7},
 453 };
 454
 455 static struct ipv6_l3fwd_route ipv6_l3fwd_route_array[] = {
 456         {{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 0},
 457         {{2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 1},
 458         {{3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 2},
 459         {{4,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 3},
 460         {{5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 4},
 461         {{6,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 5},
 462         {{7,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 6},
 463         {{8,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 7},
 464 };
 465
 466 #define IPV4_L3FWD_NUM_ROUTES \
 467         (sizeof(ipv4_l3fwd_route_array) / sizeof(ipv4_l3fwd_route_array[0]))
 468 #define IPV6_L3FWD_NUM_ROUTES \
 469         (sizeof(ipv6_l3fwd_route_array) / sizeof(ipv6_l3fwd_route_array[0]))
 470
 471 #define IPV4_L3FWD_LPM_MAX_RULES         1024
 472 #define IPV6_L3FWD_LPM_MAX_RULES         1024
 473 #define IPV6_L3FWD_LPM_NUMBER_TBL8S (1 << 16)
 474
 475 typedef struct rte_lpm lookup_struct_t;
 476 typedef struct rte_lpm6 lookup6_struct_t;
 477 static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
 478 static lookup6_struct_t *ipv6_l3fwd_lookup_struct[NB_SOCKETS];
 479 #endif
 480
 481 struct lcore_conf {
 482         uint16_t n_rx_queue;
 483         struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 484         uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
 485         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 486         lookup_struct_t * ipv4_lookup_struct;
 487 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 488         lookup6_struct_t * ipv6_lookup_struct;
 489 #else
 490         lookup_struct_t * ipv6_lookup_struct;
 491 #endif
 492 } __rte_cache_aligned;
 493
 494 static struct lcore_conf lcore_conf[RTE_MAX_LCORE];
 495
 496 /* Send burst of packets on an output interface */
 497 static inline int
 498 send_burst(struct lcore_conf *qconf, uint16_t n, uint8_t port)
 499 {
 500         struct rte_mbuf **m_table;
 501         int ret;
 502         uint16_t queueid;
 503
 504         queueid = qconf->tx_queue_id[port];
 505         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 506
 507         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 508         if (unlikely(ret < n)) {
 509                 do {
 510                         rte_pktmbuf_free(m_table[ret]);
 511                 } while (++ret < n);
 512         }
 513
 514         return 0;
 515 }
 516
 517 /* Enqueue a single packet, and send burst if queue is filled */
 518 static inline int
 519 send_single_packet(struct rte_mbuf *m, uint8_t port)
 520 {
 521         uint32_t lcore_id;
 522         uint16_t len;
 523         struct lcore_conf *qconf;
 524
 525         lcore_id = rte_lcore_id();
 526
 527         qconf = &lcore_conf[lcore_id];
 528         len = qconf->tx_mbufs[port].len;
 529         qconf->tx_mbufs[port].m_table[len] = m;
 530         len++;
 531
 532         /* enough pkts to be sent */
 533         if (unlikely(len == MAX_PKT_BURST)) {
 534                 send_burst(qconf, MAX_PKT_BURST, port);
 535                 len = 0;
 536         }
 537
 538         qconf->tx_mbufs[port].len = len;
 539         return 0;
 540 }
 541
 542 static inline __attribute__((always_inline)) void
 543 send_packetsx4(struct lcore_conf *qconf, uint8_t port,
 544         struct rte_mbuf *m[], uint32_t num)
 545 {
 546         uint32_t len, j, n;
 547
 548         len = qconf->tx_mbufs[port].len;
 549
 550         /*
 551          * If TX buffer for that queue is empty, and we have enough packets,
 552          * then send them straightway.
 553          */
 554         if (num >= MAX_TX_BURST && len == 0) {
 555                 n = rte_eth_tx_burst(port, qconf->tx_queue_id[port], m, num);
 556                 if (unlikely(n < num)) {
 557                         do {
 558                                 rte_pktmbuf_free(m[n]);
 559                         } while (++n < num);
 560                 }
 561                 return;
 562         }
 563
 564         /*
 565          * Put packets into TX buffer for that queue.
 566          */
 567
 568         n = len + num;
 569         n = (n > MAX_PKT_BURST) ? MAX_PKT_BURST - len : num;
 570
 571         j = 0;
 572         switch (n % FWDSTEP) {
 573         while (j < n) {
 574         case 0:
 575                 qconf->tx_mbufs[port].m_table[len + j] = m[j];
 576                 j++;
 577         case 3:
 578                 qconf->tx_mbufs[port].m_table[len + j] = m[j];
 579                 j++;
 580         case 2:
 581                 qconf->tx_mbufs[port].m_table[len + j] = m[j];
 582                 j++;
 583         case 1:
 584                 qconf->tx_mbufs[port].m_table[len + j] = m[j];
 585                 j++;
 586         }
 587         }
 588
 589         len += n;
 590
 591         /* enough pkts to be sent */
 592         if (unlikely(len == MAX_PKT_BURST)) {
 593
 594                 send_burst(qconf, MAX_PKT_BURST, port);
 595
 596                 /* copy rest of the packets into the TX buffer. */
 597                 len = num - n;
 598                 j = 0;
 599                 switch (len % FWDSTEP) {
 600                 while (j < len) {
 601                 case 0:
 602                         qconf->tx_mbufs[port].m_table[j] = m[n + j];
 603                         j++;
 604                 case 3:
 605                         qconf->tx_mbufs[port].m_table[j] = m[n + j];
 606                         j++;
 607                 case 2:
 608                         qconf->tx_mbufs[port].m_table[j] = m[n + j];
 609                         j++;
 610                 case 1:
 611                         qconf->tx_mbufs[port].m_table[j] = m[n + j];
 612                         j++;
 613                 }
 614                 }
 615         }
 616
 617         qconf->tx_mbufs[port].len = len;
 618 }
 619
 620 #ifdef DO_RFC_1812_CHECKS
 621 static inline int
 622 is_valid_ipv4_pkt(struct ipv4_hdr *pkt, uint32_t link_len)
 623 {
 624         /* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */
 625         /*
 626          * 1. The packet length reported by the Link Layer must be large
 627          * enough to hold the minimum length legal IP datagram (20 bytes).
 628          */
 629         if (link_len < sizeof(struct ipv4_hdr))
 630                 return -1;
 631
 632         /* 2. The IP checksum must be correct. */
 633         /* this is checked in H/W */
 634
 635         /*
 636          * 3. The IP version number must be 4. If the version number is not 4
 637          * then the packet may be another version of IP, such as IPng or
 638          * ST-II.
 639          */
 640         if (((pkt->version_ihl) >> 4) != 4)
 641                 return -3;
 642         /*
 643          * 4. The IP header length field must be large enough to hold the
 644          * minimum length legal IP datagram (20 bytes = 5 words).
 645          */
 646         if ((pkt->version_ihl & 0xf) < 5)
 647                 return -4;
 648
 649         /*
 650          * 5. The IP total length field must be large enough to hold the IP
 651          * datagram header, whose length is specified in the IP header length
 652          * field.
 653          */
 654         if (rte_cpu_to_be_16(pkt->total_length) < sizeof(struct ipv4_hdr))
 655                 return -5;
 656
 657         return 0;
 658 }
 659 #endif
 660
 661 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 662
 663 static __m128i mask0;
 664 static __m128i mask1;
 665 static __m128i mask2;
 666 static inline uint8_t
 667 get_ipv4_dst_port(void *ipv4_hdr, uint8_t portid, lookup_struct_t * ipv4_l3fwd_lookup_struct)
 668 {
 669         int ret = 0;
 670         union ipv4_5tuple_host key;
 671
 672         ipv4_hdr = (uint8_t *)ipv4_hdr + offsetof(struct ipv4_hdr, time_to_live);
 673         __m128i data = _mm_loadu_si128((__m128i*)(ipv4_hdr));
 674         /* Get 5 tuple: dst port, src port, dst IP address, src IP address and protocol */
 675         key.xmm = _mm_and_si128(data, mask0);
 676         /* Find destination port */
 677         ret = rte_hash_lookup(ipv4_l3fwd_lookup_struct, (const void *)&key);
 678         return (uint8_t)((ret < 0)? portid : ipv4_l3fwd_out_if[ret]);
 679 }
 680
 681 static inline uint8_t
 682 get_ipv6_dst_port(void *ipv6_hdr,  uint8_t portid, lookup_struct_t * ipv6_l3fwd_lookup_struct)
 683 {
 684         int ret = 0;
 685         union ipv6_5tuple_host key;
 686
 687         ipv6_hdr = (uint8_t *)ipv6_hdr + offsetof(struct ipv6_hdr, payload_len);
 688         __m128i data0 = _mm_loadu_si128((__m128i*)(ipv6_hdr));
 689         __m128i data1 = _mm_loadu_si128((__m128i*)(((uint8_t*)ipv6_hdr)+sizeof(__m128i)));
 690         __m128i data2 = _mm_loadu_si128((__m128i*)(((uint8_t*)ipv6_hdr)+sizeof(__m128i)+sizeof(__m128i)));
 691         /* Get part of 5 tuple: src IP address lower 96 bits and protocol */
 692         key.xmm[0] = _mm_and_si128(data0, mask1);
 693         /* Get part of 5 tuple: dst IP address lower 96 bits and src IP address higher 32 bits */
 694         key.xmm[1] = data1;
 695         /* Get part of 5 tuple: dst port and src port and dst IP address higher 32 bits */
 696         key.xmm[2] = _mm_and_si128(data2, mask2);
 697
 698         /* Find destination port */
 699         ret = rte_hash_lookup(ipv6_l3fwd_lookup_struct, (const void *)&key);
 700         return (uint8_t)((ret < 0)? portid : ipv6_l3fwd_out_if[ret]);
 701 }
 702 #endif
 703
 704 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
 705
 706 static inline uint8_t
 707 get_ipv4_dst_port(void *ipv4_hdr,  uint8_t portid, lookup_struct_t * ipv4_l3fwd_lookup_struct)
 708 {
 709         uint8_t next_hop;
 710
 711         return (uint8_t) ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct,
 712                 rte_be_to_cpu_32(((struct ipv4_hdr *)ipv4_hdr)->dst_addr),
 713                 &next_hop) == 0) ? next_hop : portid);
 714 }
 715
 716 static inline uint8_t
 717 get_ipv6_dst_port(void *ipv6_hdr,  uint8_t portid, lookup6_struct_t * ipv6_l3fwd_lookup_struct)
 718 {
 719         uint8_t next_hop;
 720         return (uint8_t) ((rte_lpm6_lookup(ipv6_l3fwd_lookup_struct,
 721                         ((struct ipv6_hdr*)ipv6_hdr)->dst_addr, &next_hop) == 0)?
 722                         next_hop : portid);
 723 }
 724 #endif
 725
 726 static inline void l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid,
 727         struct lcore_conf *qconf)  __attribute__((unused));
 728
 729 #if ((APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH) && \
 730         (ENABLE_MULTI_BUFFER_OPTIMIZE == 1))
 731
 732 #define MASK_ALL_PKTS    0xf
 733 #define EXECLUDE_1ST_PKT 0xe
 734 #define EXECLUDE_2ND_PKT 0xd
 735 #define EXECLUDE_3RD_PKT 0xb
 736 #define EXECLUDE_4TH_PKT 0x7
 737
 738 static inline void
 739 simple_ipv4_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *qconf)
 740 {
 741         struct ether_hdr *eth_hdr[4];
 742         struct ipv4_hdr *ipv4_hdr[4];
 743         void *d_addr_bytes[4];
 744         uint8_t dst_port[4];
 745         int32_t ret[4];
 746         union ipv4_5tuple_host key[4];
 747         __m128i data[4];
 748
 749         eth_hdr[0] = rte_pktmbuf_mtod(m[0], struct ether_hdr *);
 750         eth_hdr[1] = rte_pktmbuf_mtod(m[1], struct ether_hdr *);
 751         eth_hdr[2] = rte_pktmbuf_mtod(m[2], struct ether_hdr *);
 752         eth_hdr[3] = rte_pktmbuf_mtod(m[3], struct ether_hdr *);
 753
 754         /* Handle IPv4 headers.*/
 755         ipv4_hdr[0] = (struct ipv4_hdr *)(rte_pktmbuf_mtod(m[0], unsigned char *) +
 756                         sizeof(struct ether_hdr));
 757         ipv4_hdr[1] = (struct ipv4_hdr *)(rte_pktmbuf_mtod(m[1], unsigned char *) +
 758                         sizeof(struct ether_hdr));
 759         ipv4_hdr[2] = (struct ipv4_hdr *)(rte_pktmbuf_mtod(m[2], unsigned char *) +
 760                         sizeof(struct ether_hdr));
 761         ipv4_hdr[3] = (struct ipv4_hdr *)(rte_pktmbuf_mtod(m[3], unsigned char *) +
 762                         sizeof(struct ether_hdr));
 763
 764 #ifdef DO_RFC_1812_CHECKS
 765         /* Check to make sure the packet is valid (RFC1812) */
 766         uint8_t valid_mask = MASK_ALL_PKTS;
 767         if (is_valid_ipv4_pkt(ipv4_hdr[0], m[0]->pkt_len) < 0) {
 768                 rte_pktmbuf_free(m[0]);
 769                 valid_mask &= EXECLUDE_1ST_PKT;
 770         }
 771         if (is_valid_ipv4_pkt(ipv4_hdr[1], m[1]->pkt_len) < 0) {
 772                 rte_pktmbuf_free(m[1]);
 773                 valid_mask &= EXECLUDE_2ND_PKT;
 774         }
 775         if (is_valid_ipv4_pkt(ipv4_hdr[2], m[2]->pkt_len) < 0) {
 776                 rte_pktmbuf_free(m[2]);
 777                 valid_mask &= EXECLUDE_3RD_PKT;
 778         }
 779         if (is_valid_ipv4_pkt(ipv4_hdr[3], m[3]->pkt_len) < 0) {
 780                 rte_pktmbuf_free(m[3]);
 781                 valid_mask &= EXECLUDE_4TH_PKT;
 782         }
 783         if (unlikely(valid_mask != MASK_ALL_PKTS)) {
 784                 if (valid_mask == 0){
 785                         return;
 786                 } else {
 787                         uint8_t i = 0;
 788                         for (i = 0; i < 4; i++) {
 789                                 if ((0x1 << i) & valid_mask) {
 790                                         l3fwd_simple_forward(m[i], portid, qconf);
 791                                 }
 792                         }
 793                         return;
 794                 }
 795         }
 796 #endif // End of #ifdef DO_RFC_1812_CHECKS
 797
 798         data[0] = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m[0], unsigned char *) +
 799                 sizeof(struct ether_hdr) + offsetof(struct ipv4_hdr, time_to_live)));
 800         data[1] = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m[1], unsigned char *) +
 801                 sizeof(struct ether_hdr) + offsetof(struct ipv4_hdr, time_to_live)));
 802         data[2] = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m[2], unsigned char *) +
 803                 sizeof(struct ether_hdr) + offsetof(struct ipv4_hdr, time_to_live)));
 804         data[3] = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m[3], unsigned char *) +
 805                 sizeof(struct ether_hdr) + offsetof(struct ipv4_hdr, time_to_live)));
 806
 807         key[0].xmm = _mm_and_si128(data[0], mask0);
 808         key[1].xmm = _mm_and_si128(data[1], mask0);
 809         key[2].xmm = _mm_and_si128(data[2], mask0);
 810         key[3].xmm = _mm_and_si128(data[3], mask0);
 811
 812         const void *key_array[4] = {&key[0], &key[1], &key[2],&key[3]};
 813         rte_hash_lookup_multi(qconf->ipv4_lookup_struct, &key_array[0], 4, ret);
 814         dst_port[0] = (uint8_t) ((ret[0] < 0) ? portid : ipv4_l3fwd_out_if[ret[0]]);
 815         dst_port[1] = (uint8_t) ((ret[1] < 0) ? portid : ipv4_l3fwd_out_if[ret[1]]);
 816         dst_port[2] = (uint8_t) ((ret[2] < 0) ? portid : ipv4_l3fwd_out_if[ret[2]]);
 817         dst_port[3] = (uint8_t) ((ret[3] < 0) ? portid : ipv4_l3fwd_out_if[ret[3]]);
 818
 819         if (dst_port[0] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[0]) == 0)
 820                 dst_port[0] = portid;
 821         if (dst_port[1] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[1]) == 0)
 822                 dst_port[1] = portid;
 823         if (dst_port[2] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[2]) == 0)
 824                 dst_port[2] = portid;
 825         if (dst_port[3] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[3]) == 0)
 826                 dst_port[3] = portid;
 827
 828         /* 02:00:00:00:00:xx */
 829         d_addr_bytes[0] = &eth_hdr[0]->d_addr.addr_bytes[0];
 830         d_addr_bytes[1] = &eth_hdr[1]->d_addr.addr_bytes[0];
 831         d_addr_bytes[2] = &eth_hdr[2]->d_addr.addr_bytes[0];
 832         d_addr_bytes[3] = &eth_hdr[3]->d_addr.addr_bytes[0];
 833         *((uint64_t *)d_addr_bytes[0]) = 0x000000000002 + ((uint64_t)dst_port[0] << 40);
 834         *((uint64_t *)d_addr_bytes[1]) = 0x000000000002 + ((uint64_t)dst_port[1] << 40);
 835         *((uint64_t *)d_addr_bytes[2]) = 0x000000000002 + ((uint64_t)dst_port[2] << 40);
 836         *((uint64_t *)d_addr_bytes[3]) = 0x000000000002 + ((uint64_t)dst_port[3] << 40);
 837
 838 #ifdef DO_RFC_1812_CHECKS
 839         /* Update time to live and header checksum */
 840         --(ipv4_hdr[0]->time_to_live);
 841         --(ipv4_hdr[1]->time_to_live);
 842         --(ipv4_hdr[2]->time_to_live);
 843         --(ipv4_hdr[3]->time_to_live);
 844         ++(ipv4_hdr[0]->hdr_checksum);
 845         ++(ipv4_hdr[1]->hdr_checksum);
 846         ++(ipv4_hdr[2]->hdr_checksum);
 847         ++(ipv4_hdr[3]->hdr_checksum);
 848 #endif
 849
 850         /* src addr */
 851         ether_addr_copy(&ports_eth_addr[dst_port[0]], &eth_hdr[0]->s_addr);
 852         ether_addr_copy(&ports_eth_addr[dst_port[1]], &eth_hdr[1]->s_addr);
 853         ether_addr_copy(&ports_eth_addr[dst_port[2]], &eth_hdr[2]->s_addr);
 854         ether_addr_copy(&ports_eth_addr[dst_port[3]], &eth_hdr[3]->s_addr);
 855
 856         send_single_packet(m[0], (uint8_t)dst_port[0]);
 857         send_single_packet(m[1], (uint8_t)dst_port[1]);
 858         send_single_packet(m[2], (uint8_t)dst_port[2]);
 859         send_single_packet(m[3], (uint8_t)dst_port[3]);
 860
 861 }
 862
 863 static inline void get_ipv6_5tuple(struct rte_mbuf* m0, __m128i mask0, __m128i mask1,
 864                                  union ipv6_5tuple_host * key)
 865 {
 866         __m128i tmpdata0 = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m0, unsigned char *)
 867                         + sizeof(struct ether_hdr) + offsetof(struct ipv6_hdr, payload_len)));
 868         __m128i tmpdata1 = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m0, unsigned char *)
 869                         + sizeof(struct ether_hdr) + offsetof(struct ipv6_hdr, payload_len)
 870                         +  sizeof(__m128i)));
 871         __m128i tmpdata2 = _mm_loadu_si128((__m128i*)(rte_pktmbuf_mtod(m0, unsigned char *)
 872                         + sizeof(struct ether_hdr) + offsetof(struct ipv6_hdr, payload_len)
 873                         + sizeof(__m128i) + sizeof(__m128i)));
 874         key->xmm[0] = _mm_and_si128(tmpdata0, mask0);
 875         key->xmm[1] = tmpdata1;
 876         key->xmm[2] = _mm_and_si128(tmpdata2, mask1);
 877         return;
 878 }
 879
 880 static inline void
 881 simple_ipv6_fwd_4pkts(struct rte_mbuf* m[4], uint8_t portid, struct lcore_conf *qconf)
 882 {
 883         struct ether_hdr *eth_hdr[4];
 884         __attribute__((unused)) struct ipv6_hdr *ipv6_hdr[4];
 885         void *d_addr_bytes[4];
 886         uint8_t dst_port[4];
 887         int32_t ret[4];
 888         union ipv6_5tuple_host key[4];
 889
 890         eth_hdr[0] = rte_pktmbuf_mtod(m[0], struct ether_hdr *);
 891         eth_hdr[1] = rte_pktmbuf_mtod(m[1], struct ether_hdr *);
 892         eth_hdr[2] = rte_pktmbuf_mtod(m[2], struct ether_hdr *);
 893         eth_hdr[3] = rte_pktmbuf_mtod(m[3], struct ether_hdr *);
 894
 895         /* Handle IPv6 headers.*/
 896         ipv6_hdr[0] = (struct ipv6_hdr *)(rte_pktmbuf_mtod(m[0], unsigned char *) +
 897                         sizeof(struct ether_hdr));
 898         ipv6_hdr[1] = (struct ipv6_hdr *)(rte_pktmbuf_mtod(m[1], unsigned char *) +
 899                         sizeof(struct ether_hdr));
 900         ipv6_hdr[2] = (struct ipv6_hdr *)(rte_pktmbuf_mtod(m[2], unsigned char *) +
 901                         sizeof(struct ether_hdr));
 902         ipv6_hdr[3] = (struct ipv6_hdr *)(rte_pktmbuf_mtod(m[3], unsigned char *) +
 903                         sizeof(struct ether_hdr));
 904
 905         get_ipv6_5tuple(m[0], mask1, mask2, &key[0]);
 906         get_ipv6_5tuple(m[1], mask1, mask2, &key[1]);
 907         get_ipv6_5tuple(m[2], mask1, mask2, &key[2]);
 908         get_ipv6_5tuple(m[3], mask1, mask2, &key[3]);
 909
 910         const void *key_array[4] = {&key[0], &key[1], &key[2],&key[3]};
 911         rte_hash_lookup_multi(qconf->ipv6_lookup_struct, &key_array[0], 4, ret);
 912         dst_port[0] = (uint8_t) ((ret[0] < 0)? portid:ipv6_l3fwd_out_if[ret[0]]);
 913         dst_port[1] = (uint8_t) ((ret[1] < 0)? portid:ipv6_l3fwd_out_if[ret[1]]);
 914         dst_port[2] = (uint8_t) ((ret[2] < 0)? portid:ipv6_l3fwd_out_if[ret[2]]);
 915         dst_port[3] = (uint8_t) ((ret[3] < 0)? portid:ipv6_l3fwd_out_if[ret[3]]);
 916
 917         if (dst_port[0] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[0]) == 0)
 918                 dst_port[0] = portid;
 919         if (dst_port[1] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[1]) == 0)
 920                 dst_port[1] = portid;
 921         if (dst_port[2] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[2]) == 0)
 922                 dst_port[2] = portid;
 923         if (dst_port[3] >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port[3]) == 0)
 924                 dst_port[3] = portid;
 925
 926         /* 02:00:00:00:00:xx */
 927         d_addr_bytes[0] = &eth_hdr[0]->d_addr.addr_bytes[0];
 928         d_addr_bytes[1] = &eth_hdr[1]->d_addr.addr_bytes[0];
 929         d_addr_bytes[2] = &eth_hdr[2]->d_addr.addr_bytes[0];
 930         d_addr_bytes[3] = &eth_hdr[3]->d_addr.addr_bytes[0];
 931         *((uint64_t *)d_addr_bytes[0]) = 0x000000000002 + ((uint64_t)dst_port[0] << 40);
 932         *((uint64_t *)d_addr_bytes[1]) = 0x000000000002 + ((uint64_t)dst_port[1] << 40);
 933         *((uint64_t *)d_addr_bytes[2]) = 0x000000000002 + ((uint64_t)dst_port[2] << 40);
 934         *((uint64_t *)d_addr_bytes[3]) = 0x000000000002 + ((uint64_t)dst_port[3] << 40);
 935
 936         /* src addr */
 937         ether_addr_copy(&ports_eth_addr[dst_port[0]], &eth_hdr[0]->s_addr);
 938         ether_addr_copy(&ports_eth_addr[dst_port[1]], &eth_hdr[1]->s_addr);
 939         ether_addr_copy(&ports_eth_addr[dst_port[2]], &eth_hdr[2]->s_addr);
 940         ether_addr_copy(&ports_eth_addr[dst_port[3]], &eth_hdr[3]->s_addr);
 941
 942         send_single_packet(m[0], (uint8_t)dst_port[0]);
 943         send_single_packet(m[1], (uint8_t)dst_port[1]);
 944         send_single_packet(m[2], (uint8_t)dst_port[2]);
 945         send_single_packet(m[3], (uint8_t)dst_port[3]);
 946
 947 }
 948 #endif /* APP_LOOKUP_METHOD */
 949
 950 static inline __attribute__((always_inline)) void
 951 l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, struct lcore_conf *qconf)
 952 {
 953         struct ether_hdr *eth_hdr;
 954         struct ipv4_hdr *ipv4_hdr;
 955         void *d_addr_bytes;
 956         uint8_t dst_port;
 957
 958         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 959
 960         if (m->ol_flags & PKT_RX_IPV4_HDR) {
 961                 /* Handle IPv4 headers.*/
 962                 ipv4_hdr = (struct ipv4_hdr *)(rte_pktmbuf_mtod(m, unsigned char *) +
 963                                 sizeof(struct ether_hdr));
 964
 965 #ifdef DO_RFC_1812_CHECKS
 966                 /* Check to make sure the packet is valid (RFC1812) */
 967                 if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
 968                         rte_pktmbuf_free(m);
 969                         return;
 970                 }
 971 #endif
 972
 973                  dst_port = get_ipv4_dst_port(ipv4_hdr, portid,
 974                         qconf->ipv4_lookup_struct);
 975                 if (dst_port >= RTE_MAX_ETHPORTS ||
 976                                 (enabled_port_mask & 1 << dst_port) == 0)
 977                         dst_port = portid;
 978
 979                 /* 02:00:00:00:00:xx */
 980                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 981                 *((uint64_t *)d_addr_bytes) = ETHER_LOCAL_ADMIN_ADDR +
 982                         ((uint64_t)dst_port << 40);
 983
 984 #ifdef DO_RFC_1812_CHECKS
 985                 /* Update time to live and header checksum */
 986                 --(ipv4_hdr->time_to_live);
 987                 ++(ipv4_hdr->hdr_checksum);
 988 #endif
 989
 990                 /* src addr */
 991                 ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
 992
 993                 send_single_packet(m, dst_port);
 994
 995         } else {
 996                 /* Handle IPv6 headers.*/
 997                 struct ipv6_hdr *ipv6_hdr;
 998
 999                 ipv6_hdr = (struct ipv6_hdr *)(rte_pktmbuf_mtod(m, unsigned char *) +
1000                                 sizeof(struct ether_hdr));
1001
1002                 dst_port = get_ipv6_dst_port(ipv6_hdr, portid, qconf->ipv6_lookup_struct);
1003
1004                 if (dst_port >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port) == 0)
1005                         dst_port = portid;
1006
1007                 /* 02:00:00:00:00:xx */
1008                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
1009                 *((uint64_t *)d_addr_bytes) = ETHER_LOCAL_ADMIN_ADDR +
1010                         ((uint64_t)dst_port << 40);
1011
1012                 /* src addr */
1013                 ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
1014
1015                 send_single_packet(m, dst_port);
1016         }
1017
1018 }
1019
1020 #ifdef DO_RFC_1812_CHECKS
1021
1022 #define IPV4_MIN_VER_IHL        0x45
1023 #define IPV4_MAX_VER_IHL        0x4f
1024 #define IPV4_MAX_VER_IHL_DIFF   (IPV4_MAX_VER_IHL - IPV4_MIN_VER_IHL)
1025
1026 /* Minimum value of IPV4 total length (20B) in network byte order. */
1027 #define IPV4_MIN_LEN_BE (sizeof(struct ipv4_hdr) << 8)
1028
1029 /*
1030  * From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2:
1031  * - The IP version number must be 4.
1032  * - The IP header length field must be large enough to hold the
1033  *    minimum length legal IP datagram (20 bytes = 5 words).
1034  * - The IP total length field must be large enough to hold the IP
1035  *   datagram header, whose length is specified in the IP header length
1036  *   field.
1037  * If we encounter invalid IPV4 packet, then set destination port for it
1038  * to BAD_PORT value.
1039  */
1040 static inline __attribute__((always_inline)) void
1041 rfc1812_process(struct ipv4_hdr *ipv4_hdr, uint16_t *dp, uint32_t flags)
1042 {
1043         uint8_t ihl;
1044
1045         if ((flags & PKT_RX_IPV4_HDR) != 0) {
1046
1047                 ihl = ipv4_hdr->version_ihl - IPV4_MIN_VER_IHL;
1048
1049                 ipv4_hdr->time_to_live--;
1050                 ipv4_hdr->hdr_checksum++;
1051
1052                 if (ihl > IPV4_MAX_VER_IHL_DIFF ||
1053                                 ((uint8_t)ipv4_hdr->total_length == 0 &&
1054                                 ipv4_hdr->total_length < IPV4_MIN_LEN_BE)) {
1055                         dp[0] = BAD_PORT;
1056                 }
1057         }
1058 }
1059
1060 #else
1061 #define rfc1812_process(mb, dp) do { } while (0)
1062 #endif /* DO_RFC_1812_CHECKS */
1063
1064
1065 #if ((APP_LOOKUP_METHOD == APP_LOOKUP_LPM) && \
1066         (ENABLE_MULTI_BUFFER_OPTIMIZE == 1))
1067
1068 static inline __attribute__((always_inline)) uint16_t
1069 get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
1070         uint32_t dst_ipv4, uint8_t portid)
1071 {
1072         uint8_t next_hop;
1073         struct ipv6_hdr *ipv6_hdr;
1074         struct ether_hdr *eth_hdr;
1075
1076         if (pkt->ol_flags & PKT_RX_IPV4_HDR) {
1077                 if (rte_lpm_lookup(qconf->ipv4_lookup_struct, dst_ipv4,
1078                                 &next_hop) != 0)
1079                         next_hop = portid;
1080         } else if (pkt->ol_flags & PKT_RX_IPV6_HDR) {
1081                 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
1082                 ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
1083                 if (rte_lpm6_lookup(qconf->ipv6_lookup_struct,
1084                                 ipv6_hdr->dst_addr, &next_hop) != 0)
1085                         next_hop = portid;
1086         } else {
1087                 next_hop = portid;
1088         }
1089
1090         return next_hop;
1091 }
1092
1093 static inline void
1094 process_packet(struct lcore_conf *qconf, struct rte_mbuf *pkt,
1095         uint16_t *dst_port, uint8_t portid)
1096 {
1097         struct ether_hdr *eth_hdr;
1098         struct ipv4_hdr *ipv4_hdr;
1099         uint32_t dst_ipv4;
1100         uint16_t dp;
1101         __m128i te, ve;
1102
1103         eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
1104         ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
1105
1106         dst_ipv4 = ipv4_hdr->dst_addr;
1107         dst_ipv4 = rte_be_to_cpu_32(dst_ipv4);
1108         dp = get_dst_port(qconf, pkt, dst_ipv4, portid);
1109
1110         te = _mm_load_si128((__m128i *)eth_hdr);
1111         ve = val_eth[dp];
1112
1113         dst_port[0] = dp;
1114         rfc1812_process(ipv4_hdr, dst_port, pkt->ol_flags);
1115
1116         te =  _mm_blend_epi16(te, ve, MASK_ETH);
1117         _mm_store_si128((__m128i *)eth_hdr, te);
1118 }
1119
1120 /*
1121  * Read ol_flags and destination IPV4 addresses from 4 mbufs.
1122  */
1123 static inline void
1124 processx4_step1(struct rte_mbuf *pkt[FWDSTEP], __m128i *dip, uint32_t *flag)
1125 {
1126         struct ipv4_hdr *ipv4_hdr;
1127         struct ether_hdr *eth_hdr;
1128         uint32_t x0, x1, x2, x3;
1129
1130         eth_hdr = rte_pktmbuf_mtod(pkt[0], struct ether_hdr *);
1131         ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
1132         x0 = ipv4_hdr->dst_addr;
1133         flag[0] = pkt[0]->ol_flags & PKT_RX_IPV4_HDR;
1134
1135         eth_hdr = rte_pktmbuf_mtod(pkt[1], struct ether_hdr *);
1136         ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
1137         x1 = ipv4_hdr->dst_addr;
1138         flag[0] &= pkt[1]->ol_flags;
1139
1140         eth_hdr = rte_pktmbuf_mtod(pkt[2], struct ether_hdr *);
1141         ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
1142         x2 = ipv4_hdr->dst_addr;
1143         flag[0] &= pkt[2]->ol_flags;
1144
1145         eth_hdr = rte_pktmbuf_mtod(pkt[3], struct ether_hdr *);
1146         ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
1147         x3 = ipv4_hdr->dst_addr;
1148         flag[0] &= pkt[3]->ol_flags;
1149
1150         dip[0] = _mm_set_epi32(x3, x2, x1, x0);
1151 }
1152
1153 /*
1154  * Lookup into LPM for destination port.
1155  * If lookup fails, use incoming port (portid) as destination port.
1156  */
1157 static inline void
1158 processx4_step2(const struct lcore_conf *qconf, __m128i dip, uint32_t flag,
1159         uint8_t portid, struct rte_mbuf *pkt[FWDSTEP], uint16_t dprt[FWDSTEP])
1160 {
1161         rte_xmm_t dst;
1162         const  __m128i bswap_mask = _mm_set_epi8(12, 13, 14, 15, 8, 9, 10, 11,
1163                                                 4, 5, 6, 7, 0, 1, 2, 3);
1164
1165         /* Byte swap 4 IPV4 addresses. */
1166         dip = _mm_shuffle_epi8(dip, bswap_mask);
1167
1168         /* if all 4 packets are IPV4. */
1169         if (likely(flag != 0)) {
1170                 rte_lpm_lookupx4(qconf->ipv4_lookup_struct, dip, dprt, portid);
1171         } else {
1172                 dst.x = dip;
1173                 dprt[0] = get_dst_port(qconf, pkt[0], dst.u32[0], portid);
1174                 dprt[1] = get_dst_port(qconf, pkt[1], dst.u32[1], portid);
1175                 dprt[2] = get_dst_port(qconf, pkt[2], dst.u32[2], portid);
1176                 dprt[3] = get_dst_port(qconf, pkt[3], dst.u32[3], portid);
1177         }
1178 }
1179
1180 /*
1181  * Update source and destination MAC addresses in the ethernet header.
1182  * Perform RFC1812 checks and updates for IPV4 packets.
1183  */
1184 static inline void
1185 processx4_step3(struct rte_mbuf *pkt[FWDSTEP], uint16_t dst_port[FWDSTEP])
1186 {
1187         __m128i te[FWDSTEP];
1188         __m128i ve[FWDSTEP];
1189         __m128i *p[FWDSTEP];
1190
1191         p[0] = (rte_pktmbuf_mtod(pkt[0], __m128i *));
1192         p[1] = (rte_pktmbuf_mtod(pkt[1], __m128i *));
1193         p[2] = (rte_pktmbuf_mtod(pkt[2], __m128i *));
1194         p[3] = (rte_pktmbuf_mtod(pkt[3], __m128i *));
1195
1196         ve[0] = val_eth[dst_port[0]];
1197         te[0] = _mm_load_si128(p[0]);
1198
1199         ve[1] = val_eth[dst_port[1]];
1200         te[1] = _mm_load_si128(p[1]);
1201
1202         ve[2] = val_eth[dst_port[2]];
1203         te[2] = _mm_load_si128(p[2]);
1204
1205         ve[3] = val_eth[dst_port[3]];
1206         te[3] = _mm_load_si128(p[3]);
1207
1208         /* Update first 12 bytes, keep rest bytes intact. */
1209         te[0] =  _mm_blend_epi16(te[0], ve[0], MASK_ETH);
1210         te[1] =  _mm_blend_epi16(te[1], ve[1], MASK_ETH);
1211         te[2] =  _mm_blend_epi16(te[2], ve[2], MASK_ETH);
1212         te[3] =  _mm_blend_epi16(te[3], ve[3], MASK_ETH);
1213
1214         _mm_store_si128(p[0], te[0]);
1215         _mm_store_si128(p[1], te[1]);
1216         _mm_store_si128(p[2], te[2]);
1217         _mm_store_si128(p[3], te[3]);
1218
1219         rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[0] + 1),
1220                 &dst_port[0], pkt[0]->ol_flags);
1221         rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[1] + 1),
1222                 &dst_port[1], pkt[1]->ol_flags);
1223         rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[2] + 1),
1224                 &dst_port[2], pkt[2]->ol_flags);
1225         rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[3] + 1),
1226                 &dst_port[3], pkt[3]->ol_flags);
1227 }
1228
1229 /*
1230  * We group consecutive packets with the same destionation port into one burst.
1231  * To avoid extra latency this is done together with some other packet
1232  * processing, but after we made a final decision about packet's destination.
1233  * To do this we maintain:
1234  * pnum - array of number of consecutive packets with the same dest port for
1235  * each packet in the input burst.
1236  * lp - pointer to the last updated element in the pnum.
1237  * dlp - dest port value lp corresponds to.
1238  */
1239
1240 #define GRPSZ   (1 << FWDSTEP)
1241 #define GRPMSK  (GRPSZ - 1)
1242
1243 #define GROUP_PORT_STEP(dlp, dcp, lp, pn, idx)  do { \
1244         if (likely((dlp) == (dcp)[(idx)])) {         \
1245                 (lp)[0]++;                           \
1246         } else {                                     \
1247                 (dlp) = (dcp)[idx];                  \
1248                 (lp) = (pn) + (idx);                 \
1249                 (lp)[0] = 1;                         \
1250         }                                            \
1251 } while (0)
1252
1253 /*
1254  * Group consecutive packets with the same destination port in bursts of 4.
1255  * Suppose we have array of destionation ports:
1256  * dst_port[] = {a, b, c, d,, e, ... }
1257  * dp1 should contain: <a, b, c, d>, dp2: <b, c, d, e>.
1258  * We doing 4 comparisions at once and the result is 4 bit mask.
1259  * This mask is used as an index into prebuild array of pnum values.
1260  */
1261 static inline uint16_t *
1262 port_groupx4(uint16_t pn[FWDSTEP + 1], uint16_t *lp, __m128i dp1, __m128i dp2)
1263 {
1264         static const struct {
1265                 uint64_t pnum; /* prebuild 4 values for pnum[]. */
1266                 int32_t  idx;  /* index for new last updated elemnet. */
1267                 uint16_t lpv;  /* add value to the last updated element. */
1268         } gptbl[GRPSZ] = {
1269         {
1270                 /* 0: a != b, b != c, c != d, d != e */
1271                 .pnum = UINT64_C(0x0001000100010001),
1272                 .idx = 4,
1273                 .lpv = 0,
1274         },
1275         {
1276                 /* 1: a == b, b != c, c != d, d != e */
1277                 .pnum = UINT64_C(0x0001000100010002),
1278                 .idx = 4,
1279                 .lpv = 1,
1280         },
1281         {
1282                 /* 2: a != b, b == c, c != d, d != e */
1283                 .pnum = UINT64_C(0x0001000100020001),
1284                 .idx = 4,
1285                 .lpv = 0,
1286         },
1287         {
1288                 /* 3: a == b, b == c, c != d, d != e */
1289                 .pnum = UINT64_C(0x0001000100020003),
1290                 .idx = 4,
1291                 .lpv = 2,
1292         },
1293         {
1294                 /* 4: a != b, b != c, c == d, d != e */
1295                 .pnum = UINT64_C(0x0001000200010001),
1296                 .idx = 4,
1297                 .lpv = 0,
1298         },
1299         {
1300                 /* 5: a == b, b != c, c == d, d != e */
1301                 .pnum = UINT64_C(0x0001000200010002),
1302                 .idx = 4,
1303                 .lpv = 1,
1304         },
1305         {
1306                 /* 6: a != b, b == c, c == d, d != e */
1307                 .pnum = UINT64_C(0x0001000200030001),
1308                 .idx = 4,
1309                 .lpv = 0,
1310         },
1311         {
1312                 /* 7: a == b, b == c, c == d, d != e */
1313                 .pnum = UINT64_C(0x0001000200030004),
1314                 .idx = 4,
1315                 .lpv = 3,
1316         },
1317         {
1318                 /* 8: a != b, b != c, c != d, d == e */
1319                 .pnum = UINT64_C(0x0002000100010001),
1320                 .idx = 3,
1321                 .lpv = 0,
1322         },
1323         {
1324                 /* 9: a == b, b != c, c != d, d == e */
1325                 .pnum = UINT64_C(0x0002000100010002),
1326                 .idx = 3,
1327                 .lpv = 1,
1328         },
1329         {
1330                 /* 0xa: a != b, b == c, c != d, d == e */
1331                 .pnum = UINT64_C(0x0002000100020001),
1332                 .idx = 3,
1333                 .lpv = 0,
1334         },
1335         {
1336                 /* 0xb: a == b, b == c, c != d, d == e */
1337                 .pnum = UINT64_C(0x0002000100020003),
1338                 .idx = 3,
1339                 .lpv = 2,
1340         },
1341         {
1342                 /* 0xc: a != b, b != c, c == d, d == e */
1343                 .pnum = UINT64_C(0x0002000300010001),
1344                 .idx = 2,
1345                 .lpv = 0,
1346         },
1347         {
1348                 /* 0xd: a == b, b != c, c == d, d == e */
1349                 .pnum = UINT64_C(0x0002000300010002),
1350                 .idx = 2,
1351                 .lpv = 1,
1352         },
1353         {
1354                 /* 0xe: a != b, b == c, c == d, d == e */
1355                 .pnum = UINT64_C(0x0002000300040001),
1356                 .idx = 1,
1357                 .lpv = 0,
1358         },
1359         {
1360                 /* 0xf: a == b, b == c, c == d, d == e */
1361                 .pnum = UINT64_C(0x0002000300040005),
1362                 .idx = 0,
1363                 .lpv = 4,
1364         },
1365         };
1366
1367         union {
1368                 uint16_t u16[FWDSTEP + 1];
1369                 uint64_t u64;
1370         } *pnum = (void *)pn;
1371
1372         int32_t v;
1373
1374         dp1 = _mm_cmpeq_epi16(dp1, dp2);
1375         dp1 = _mm_unpacklo_epi16(dp1, dp1);
1376         v = _mm_movemask_ps((__m128)dp1);
1377
1378         /* update last port counter. */
1379         lp[0] += gptbl[v].lpv;
1380
1381         /* if dest port value has changed. */
1382         if (v != GRPMSK) {
1383                 lp = pnum->u16 + gptbl[v].idx;
1384                 lp[0] = 1;
1385                 pnum->u64 = gptbl[v].pnum;
1386         }
1387
1388         return lp;
1389 }
1390
1391 #endif /* APP_LOOKUP_METHOD */
1392
1393 /* main processing loop */
1394 static int
1395 main_loop(__attribute__((unused)) void *dummy)
1396 {
1397         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
1398         unsigned lcore_id;
1399         uint64_t prev_tsc, diff_tsc, cur_tsc;
1400         int i, j, nb_rx;
1401         uint8_t portid, queueid;
1402         struct lcore_conf *qconf;
1403         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
1404                 US_PER_S * BURST_TX_DRAIN_US;
1405
1406 #if ((APP_LOOKUP_METHOD == APP_LOOKUP_LPM) && \
1407         (ENABLE_MULTI_BUFFER_OPTIMIZE == 1))
1408         int32_t k;
1409         uint16_t dlp;
1410         uint16_t *lp;
1411         uint16_t dst_port[MAX_PKT_BURST];
1412         __m128i dip[MAX_PKT_BURST / FWDSTEP];
1413         uint32_t flag[MAX_PKT_BURST / FWDSTEP];
1414         uint16_t pnum[MAX_PKT_BURST + 1];
1415 #endif
1416
1417         prev_tsc = 0;
1418
1419         lcore_id = rte_lcore_id();
1420         qconf = &lcore_conf[lcore_id];
1421
1422         if (qconf->n_rx_queue == 0) {
1423                 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
1424                 return 0;
1425         }
1426
1427         RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
1428
1429         for (i = 0; i < qconf->n_rx_queue; i++) {
1430
1431                 portid = qconf->rx_queue_list[i].port_id;
1432                 queueid = qconf->rx_queue_list[i].queue_id;
1433                 RTE_LOG(INFO, L3FWD, " -- lcoreid=%u portid=%hhu rxqueueid=%hhu\n", lcore_id,
1434                         portid, queueid);
1435         }
1436
1437         while (1) {
1438
1439                 cur_tsc = rte_rdtsc();
1440
1441                 /*
1442                  * TX burst queue drain
1443                  */
1444                 diff_tsc = cur_tsc - prev_tsc;
1445                 if (unlikely(diff_tsc > drain_tsc)) {
1446
1447                         /*
1448                          * This could be optimized (use queueid instead of
1449                          * portid), but it is not called so often
1450                          */
1451                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
1452                                 if (qconf->tx_mbufs[portid].len == 0)
1453                                         continue;
1454                                 send_burst(qconf,
1455                                         qconf->tx_mbufs[portid].len,
1456                                         portid);
1457                                 qconf->tx_mbufs[portid].len = 0;
1458                         }
1459
1460                         prev_tsc = cur_tsc;
1461                 }
1462
1463                 /*
1464                  * Read packet from RX queues
1465                  */
1466                 for (i = 0; i < qconf->n_rx_queue; ++i) {
1467                         portid = qconf->rx_queue_list[i].port_id;
1468                         queueid = qconf->rx_queue_list[i].queue_id;
1469                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
1470                                 MAX_PKT_BURST);
1471                         if (nb_rx == 0)
1472                                 continue;
1473
1474 #if (ENABLE_MULTI_BUFFER_OPTIMIZE == 1)
1475 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
1476                         {
1477                                 /*
1478                                  * Send nb_rx - nb_rx%4 packets
1479                                  * in groups of 4.
1480                                  */
1481                                 int32_t n = RTE_ALIGN_FLOOR(nb_rx, 4);
1482                                 for (j = 0; j < n ; j+=4) {
1483                                         uint32_t ol_flag = pkts_burst[j]->ol_flags
1484                                                         & pkts_burst[j+1]->ol_flags
1485                                                         & pkts_burst[j+2]->ol_flags
1486                                                         & pkts_burst[j+3]->ol_flags;
1487                                         if (ol_flag & PKT_RX_IPV4_HDR ) {
1488                                                 simple_ipv4_fwd_4pkts(&pkts_burst[j],
1489                                                                         portid, qconf);
1490                                         } else if (ol_flag & PKT_RX_IPV6_HDR) {
1491                                                 simple_ipv6_fwd_4pkts(&pkts_burst[j],
1492                                                                         portid, qconf);
1493                                         } else {
1494                                                 l3fwd_simple_forward(pkts_burst[j],
1495                                                                         portid, qconf);
1496                                                 l3fwd_simple_forward(pkts_burst[j+1],
1497                                                                         portid, qconf);
1498                                                 l3fwd_simple_forward(pkts_burst[j+2],
1499                                                                         portid, qconf);
1500                                                 l3fwd_simple_forward(pkts_burst[j+3],
1501                                                                         portid, qconf);
1502                                         }
1503                                 }
1504                                 for (; j < nb_rx ; j++) {
1505                                         l3fwd_simple_forward(pkts_burst[j],
1506                                                                 portid, qconf);
1507                                 }
1508                         }
1509 #elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
1510
1511                         k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP);
1512                         for (j = 0; j != k; j += FWDSTEP) {
1513                                 processx4_step1(&pkts_burst[j],
1514                                         &dip[j / FWDSTEP],
1515                                         &flag[j / FWDSTEP]);
1516                         }
1517
1518                         k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP);
1519                         for (j = 0; j != k; j += FWDSTEP) {
1520                                 processx4_step2(qconf, dip[j / FWDSTEP],
1521                                         flag[j / FWDSTEP], portid,
1522                                         &pkts_burst[j], &dst_port[j]);
1523                         }
1524
1525                         /*
1526                          * Finish packet processing and group consecutive
1527                          * packets with the same destination port.
1528                          */
1529                         k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP);
1530                         if (k != 0) {
1531                                 __m128i dp1, dp2;
1532
1533                                 lp = pnum;
1534                                 lp[0] = 1;
1535
1536                                 processx4_step3(pkts_burst, dst_port);
1537
1538                                 /* dp1: <d[0], d[1], d[2], d[3], ... > */
1539                                 dp1 = _mm_loadu_si128((__m128i *)dst_port);
1540
1541                                 for (j = FWDSTEP; j != k; j += FWDSTEP) {
1542                                         processx4_step3(&pkts_burst[j],
1543                                                 &dst_port[j]);
1544
1545                                         /*
1546                                          * dp2:
1547                                          * <d[j-3], d[j-2], d[j-1], d[j], ... >
1548                                          */
1549                                         dp2 = _mm_loadu_si128((__m128i *)
1550                                                 &dst_port[j - FWDSTEP + 1]);
1551                                         lp  = port_groupx4(&pnum[j - FWDSTEP],
1552                                                 lp, dp1, dp2);
1553
1554                                         /*
1555                                          * dp1:
1556                                          * <d[j], d[j+1], d[j+2], d[j+3], ... >
1557                                          */
1558                                         dp1 = _mm_srli_si128(dp2,
1559                                                 (FWDSTEP - 1) *
1560                                                 sizeof(dst_port[0]));
1561                                 }
1562
1563                                 /*
1564                                  * dp2: <d[j-3], d[j-2], d[j-1], d[j-1], ... >
1565                                  */
1566                                 dp2 = _mm_shufflelo_epi16(dp1, 0xf9);
1567                                 lp  = port_groupx4(&pnum[j - FWDSTEP], lp,
1568                                         dp1, dp2);
1569
1570                                 /*
1571                                  * remove values added by the last repeated
1572                                  * dst port.
1573                                  */
1574                                 lp[0]--;
1575                                 dlp = dst_port[j - 1];
1576                         } else {
1577                                 /* set dlp and lp to the never used values. */
1578                                 dlp = BAD_PORT - 1;
1579                                 lp = pnum + MAX_PKT_BURST;
1580                         }
1581
1582                         /* Process up to last 3 packets one by one. */
1583                         switch (nb_rx % FWDSTEP) {
1584                         case 3:
1585                                 process_packet(qconf, pkts_burst[j],
1586                                         dst_port + j, portid);
1587                                 GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
1588                                 j++;
1589                         case 2:
1590                                 process_packet(qconf, pkts_burst[j],
1591                                         dst_port + j, portid);
1592                                 GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
1593                                 j++;
1594                         case 1:
1595                                 process_packet(qconf, pkts_burst[j],
1596                                         dst_port + j, portid);
1597                                 GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
1598                                 j++;
1599                         }
1600
1601                         /*
1602                          * Send packets out, through destination port.
1603                          * Consecuteve pacekts with the same destination port
1604                          * are already grouped together.
1605                          * If destination port for the packet equals BAD_PORT,
1606                          * then free the packet without sending it out.
1607                          */
1608                         for (j = 0; j < nb_rx; j += k) {
1609
1610                                 int32_t m;
1611                                 uint16_t pn;
1612
1613                                 pn = dst_port[j];
1614                                 k = pnum[j];
1615
1616                                 if (likely(pn != BAD_PORT)) {
1617                                         send_packetsx4(qconf, pn,
1618                                                 pkts_burst + j, k);
1619                                 } else {
1620                                         for (m = j; m != j + k; m++)
1621                                                 rte_pktmbuf_free(pkts_burst[m]);
1622                                 }
1623                         }
1624
1625 #endif /* APP_LOOKUP_METHOD */
1626 #else /* ENABLE_MULTI_BUFFER_OPTIMIZE == 0 */
1627
1628                         /* Prefetch first packets */
1629                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
1630                                 rte_prefetch0(rte_pktmbuf_mtod(
1631                                                 pkts_burst[j], void *));
1632                         }
1633
1634                         /* Prefetch and forward already prefetched packets */
1635                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
1636                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
1637                                                 j + PREFETCH_OFFSET], void *));
1638                                 l3fwd_simple_forward(pkts_burst[j], portid,
1639                                         qconf);
1640                         }
1641
1642                         /* Forward remaining prefetched packets */
1643                         for (; j < nb_rx; j++) {
1644                                 l3fwd_simple_forward(pkts_burst[j], portid,
1645                                         qconf);
1646                         }
1647 #endif /* ENABLE_MULTI_BUFFER_OPTIMIZE */
1648
1649                 }
1650         }
1651 }
1652
1653 static int
1654 check_lcore_params(void)
1655 {
1656         uint8_t queue, lcore;
1657         uint16_t i;
1658         int socketid;
1659
1660         for (i = 0; i < nb_lcore_params; ++i) {
1661                 queue = lcore_params[i].queue_id;
1662                 if (queue >= MAX_RX_QUEUE_PER_PORT) {
1663                         printf("invalid queue number: %hhu\n", queue);
1664                         return -1;
1665                 }
1666                 lcore = lcore_params[i].lcore_id;
1667                 if (!rte_lcore_is_enabled(lcore)) {
1668                         printf("error: lcore %hhu is not enabled in lcore mask\n", lcore);
1669                         return -1;
1670                 }
1671                 if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
1672                         (numa_on == 0)) {
1673                         printf("warning: lcore %hhu is on socket %d with numa off \n",
1674                                 lcore, socketid);
1675                 }
1676         }
1677         return 0;
1678 }
1679
1680 static int
1681 check_port_config(const unsigned nb_ports)
1682 {
1683         unsigned portid;
1684         uint16_t i;
1685
1686         for (i = 0; i < nb_lcore_params; ++i) {
1687                 portid = lcore_params[i].port_id;
1688                 if ((enabled_port_mask & (1 << portid)) == 0) {
1689                         printf("port %u is not enabled in port mask\n", portid);
1690                         return -1;
1691                 }
1692                 if (portid >= nb_ports) {
1693                         printf("port %u is not present on the board\n", portid);
1694                         return -1;
1695                 }
1696         }
1697         return 0;
1698 }
1699
1700 static uint8_t
1701 get_port_n_rx_queues(const uint8_t port)
1702 {
1703         int queue = -1;
1704         uint16_t i;
1705
1706         for (i = 0; i < nb_lcore_params; ++i) {
1707                 if (lcore_params[i].port_id == port && lcore_params[i].queue_id > queue)
1708                         queue = lcore_params[i].queue_id;
1709         }
1710         return (uint8_t)(++queue);
1711 }
1712
1713 static int
1714 init_lcore_rx_queues(void)
1715 {
1716         uint16_t i, nb_rx_queue;
1717         uint8_t lcore;
1718
1719         for (i = 0; i < nb_lcore_params; ++i) {
1720                 lcore = lcore_params[i].lcore_id;
1721                 nb_rx_queue = lcore_conf[lcore].n_rx_queue;
1722                 if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) {
1723                         printf("error: too many queues (%u) for lcore: %u\n",
1724                                 (unsigned)nb_rx_queue + 1, (unsigned)lcore);
1725                         return -1;
1726                 } else {
1727                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id =
1728                                 lcore_params[i].port_id;
1729                         lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id =
1730                                 lcore_params[i].queue_id;
1731                         lcore_conf[lcore].n_rx_queue++;
1732                 }
1733         }
1734         return 0;
1735 }
1736
1737 /* display usage */
1738 static void
1739 print_usage(const char *prgname)
1740 {
1741         printf ("%s [EAL options] -- -p PORTMASK -P"
1742                 "  [--config (port,queue,lcore)[,(port,queue,lcore]]"
1743                 "  [--enable-jumbo [--max-pkt-len PKTLEN]]\n"
1744                 "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
1745                 "  -P : enable promiscuous mode\n"
1746                 "  --config (port,queue,lcore): rx queues configuration\n"
1747                 "  --no-numa: optional, disable numa awareness\n"
1748                 "  --ipv6: optional, specify it if running ipv6 packets\n"
1749                 "  --enable-jumbo: enable jumbo frame"
1750                 " which max packet len is PKTLEN in decimal (64-9600)\n"
1751                 "  --hash-entry-num: specify the hash entry number in hexadecimal to be setup\n",
1752                 prgname);
1753 }
1754
1755 static int parse_max_pkt_len(const char *pktlen)
1756 {
1757         char *end = NULL;
1758         unsigned long len;
1759
1760         /* parse decimal string */
1761         len = strtoul(pktlen, &end, 10);
1762         if ((pktlen[0] == '\0') || (end == NULL) || (*end != '\0'))
1763                 return -1;
1764
1765         if (len == 0)
1766                 return -1;
1767
1768         return len;
1769 }
1770
1771 static int
1772 parse_portmask(const char *portmask)
1773 {
1774         char *end = NULL;
1775         unsigned long pm;
1776
1777         /* parse hexadecimal string */
1778         pm = strtoul(portmask, &end, 16);
1779         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
1780                 return -1;
1781
1782         if (pm == 0)
1783                 return -1;
1784
1785         return pm;
1786 }
1787
1788 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
1789 static int
1790 parse_hash_entry_number(const char *hash_entry_num)
1791 {
1792         char *end = NULL;
1793         unsigned long hash_en;
1794         /* parse hexadecimal string */
1795         hash_en = strtoul(hash_entry_num, &end, 16);
1796         if ((hash_entry_num[0] == '\0') || (end == NULL) || (*end != '\0'))
1797                 return -1;
1798
1799         if (hash_en == 0)
1800                 return -1;
1801
1802         return hash_en;
1803 }
1804 #endif
1805
1806 static int
1807 parse_config(const char *q_arg)
1808 {
1809         char s[256];
1810         const char *p, *p0 = q_arg;
1811         char *end;
1812         enum fieldnames {
1813                 FLD_PORT = 0,
1814                 FLD_QUEUE,
1815                 FLD_LCORE,
1816                 _NUM_FLD
1817         };
1818         unsigned long int_fld[_NUM_FLD];
1819         char *str_fld[_NUM_FLD];
1820         int i;
1821         unsigned size;
1822
1823         nb_lcore_params = 0;
1824
1825         while ((p = strchr(p0,'(')) != NULL) {
1826                 ++p;
1827                 if((p0 = strchr(p,')')) == NULL)
1828                         return -1;
1829
1830                 size = p0 - p;
1831                 if(size >= sizeof(s))
1832                         return -1;
1833
1834                 snprintf(s, sizeof(s), "%.*s", size, p);
1835                 if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD)
1836                         return -1;
1837                 for (i = 0; i < _NUM_FLD; i++){
1838                         errno = 0;
1839                         int_fld[i] = strtoul(str_fld[i], &end, 0);
1840                         if (errno != 0 || end == str_fld[i] || int_fld[i] > 255)
1841                                 return -1;
1842                 }
1843                 if (nb_lcore_params >= MAX_LCORE_PARAMS) {
1844                         printf("exceeded max number of lcore params: %hu\n",
1845                                 nb_lcore_params);
1846                         return -1;
1847                 }
1848                 lcore_params_array[nb_lcore_params].port_id = (uint8_t)int_fld[FLD_PORT];
1849                 lcore_params_array[nb_lcore_params].queue_id = (uint8_t)int_fld[FLD_QUEUE];
1850                 lcore_params_array[nb_lcore_params].lcore_id = (uint8_t)int_fld[FLD_LCORE];
1851                 ++nb_lcore_params;
1852         }
1853         lcore_params = lcore_params_array;
1854         return 0;
1855 }
1856
1857 #define CMD_LINE_OPT_CONFIG "config"
1858 #define CMD_LINE_OPT_NO_NUMA "no-numa"
1859 #define CMD_LINE_OPT_IPV6 "ipv6"
1860 #define CMD_LINE_OPT_ENABLE_JUMBO "enable-jumbo"
1861 #define CMD_LINE_OPT_HASH_ENTRY_NUM "hash-entry-num"
1862
1863 /* Parse the argument given in the command line of the application */
1864 static int
1865 parse_args(int argc, char **argv)
1866 {
1867         int opt, ret;
1868         char **argvopt;
1869         int option_index;
1870         char *prgname = argv[0];
1871         static struct option lgopts[] = {
1872                 {CMD_LINE_OPT_CONFIG, 1, 0, 0},
1873                 {CMD_LINE_OPT_NO_NUMA, 0, 0, 0},
1874                 {CMD_LINE_OPT_IPV6, 0, 0, 0},
1875                 {CMD_LINE_OPT_ENABLE_JUMBO, 0, 0, 0},
1876                 {CMD_LINE_OPT_HASH_ENTRY_NUM, 1, 0, 0},
1877                 {NULL, 0, 0, 0}
1878         };
1879
1880         argvopt = argv;
1881
1882         while ((opt = getopt_long(argc, argvopt, "p:P",
1883                                 lgopts, &option_index)) != EOF) {
1884
1885                 switch (opt) {
1886                 /* portmask */
1887                 case 'p':
1888                         enabled_port_mask = parse_portmask(optarg);
1889                         if (enabled_port_mask == 0) {
1890                                 printf("invalid portmask\n");
1891                                 print_usage(prgname);
1892                                 return -1;
1893                         }
1894                         break;
1895                 case 'P':
1896                         printf("Promiscuous mode selected\n");
1897                         promiscuous_on = 1;
1898                         break;
1899
1900                 /* long options */
1901                 case 0:
1902                         if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_CONFIG,
1903                                 sizeof (CMD_LINE_OPT_CONFIG))) {
1904                                 ret = parse_config(optarg);
1905                                 if (ret) {
1906                                         printf("invalid config\n");
1907                                         print_usage(prgname);
1908                                         return -1;
1909                                 }
1910                         }
1911
1912                         if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_NO_NUMA,
1913                                 sizeof(CMD_LINE_OPT_NO_NUMA))) {
1914                                 printf("numa is disabled \n");
1915                                 numa_on = 0;
1916                         }
1917
1918 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
1919                         if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_IPV6,
1920                                 sizeof(CMD_LINE_OPT_IPV6))) {
1921                                 printf("ipv6 is specified \n");
1922                                 ipv6 = 1;
1923                         }
1924 #endif
1925
1926                         if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_ENABLE_JUMBO,
1927                                 sizeof (CMD_LINE_OPT_ENABLE_JUMBO))) {
1928                                 struct option lenopts = {"max-pkt-len", required_argument, 0, 0};
1929
1930                                 printf("jumbo frame is enabled - disabling simple TX path\n");
1931                                 port_conf.rxmode.jumbo_frame = 1;
1932
1933                                 /* if no max-pkt-len set, use the default value ETHER_MAX_LEN */
1934                                 if (0 == getopt_long(argc, argvopt, "", &lenopts, &option_index)) {
1935                                         ret = parse_max_pkt_len(optarg);
1936                                         if ((ret < 64) || (ret > MAX_JUMBO_PKT_LEN)){
1937                                                 printf("invalid packet length\n");
1938                                                 print_usage(prgname);
1939                                                 return -1;
1940                                         }
1941                                         port_conf.rxmode.max_rx_pkt_len = ret;
1942                                 }
1943                                 printf("set jumbo frame max packet length to %u\n",
1944                                                 (unsigned int)port_conf.rxmode.max_rx_pkt_len);
1945                         }
1946 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
1947                         if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_HASH_ENTRY_NUM,
1948                                 sizeof(CMD_LINE_OPT_HASH_ENTRY_NUM))) {
1949                                 ret = parse_hash_entry_number(optarg);
1950                                 if ((ret > 0) && (ret <= L3FWD_HASH_ENTRIES)) {
1951                                         hash_entry_number = ret;
1952                                 } else {
1953                                         printf("invalid hash entry number\n");
1954                                         print_usage(prgname);
1955                                         return -1;
1956                                 }
1957                         }
1958 #endif
1959                         break;
1960
1961                 default:
1962                         print_usage(prgname);
1963                         return -1;
1964                 }
1965         }
1966
1967         if (optind >= 0)
1968                 argv[optind-1] = prgname;
1969
1970         ret = optind-1;
1971         optind = 0; /* reset getopt lib */
1972         return ret;
1973 }
1974
1975 static void
1976 print_ethaddr(const char *name, const struct ether_addr *eth_addr)
1977 {
1978         char buf[ETHER_ADDR_FMT_SIZE];
1979         ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
1980         printf("%s%s", name, buf);
1981 }
1982
1983 #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
1984
1985 static void convert_ipv4_5tuple(struct ipv4_5tuple* key1,
1986                 union ipv4_5tuple_host* key2)
1987 {
1988         key2->ip_dst = rte_cpu_to_be_32(key1->ip_dst);
1989         key2->ip_src = rte_cpu_to_be_32(key1->ip_src);
1990         key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
1991         key2->port_src = rte_cpu_to_be_16(key1->port_src);
1992         key2->proto = key1->proto;
1993         key2->pad0 = 0;
1994         key2->pad1 = 0;
1995         return;
1996 }
1997
1998 static void convert_ipv6_5tuple(struct ipv6_5tuple* key1,
1999                 union ipv6_5tuple_host* key2)
2000 {
2001         uint32_t i;
2002         for (i = 0; i < 16; i++)
2003         {
2004                 key2->ip_dst[i] = key1->ip_dst[i];
2005                 key2->ip_src[i] = key1->ip_src[i];
2006         }
2007         key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
2008         key2->port_src = rte_cpu_to_be_16(key1->port_src);
2009         key2->proto = key1->proto;
2010         key2->pad0 = 0;
2011         key2->pad1 = 0;
2012         key2->reserve = 0;
2013         return;
2014 }
2015
2016 #define BYTE_VALUE_MAX 256
2017 #define ALL_32_BITS 0xffffffff
2018 #define BIT_8_TO_15 0x0000ff00
2019 static inline void
2020 populate_ipv4_few_flow_into_table(const struct rte_hash* h)
2021 {
2022         uint32_t i;
2023         int32_t ret;
2024         uint32_t array_len = sizeof(ipv4_l3fwd_route_array)/sizeof(ipv4_l3fwd_route_array[0]);
2025
2026         mask0 = _mm_set_epi32(ALL_32_BITS, ALL_32_BITS, ALL_32_BITS, BIT_8_TO_15);
2027         for (i = 0; i < array_len; i++) {
2028                 struct ipv4_l3fwd_route  entry;
2029                 union ipv4_5tuple_host newkey;
2030                 entry = ipv4_l3fwd_route_array[i];
2031                 convert_ipv4_5tuple(&entry.key, &newkey);
2032                 ret = rte_hash_add_key (h,(void *) &newkey);
2033                 if (ret < 0) {
2034                         rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
2035                                 " to the l3fwd hash.\n", i);
2036                 }
2037                 ipv4_l3fwd_out_if[ret] = entry.if_out;
2038         }
2039         printf("Hash: Adding 0x%" PRIx32 " keys\n", array_len);
2040 }
2041
2042 #define BIT_16_TO_23 0x00ff0000
2043 static inline void
2044 populate_ipv6_few_flow_into_table(const struct rte_hash* h)
2045 {
2046         uint32_t i;
2047         int32_t ret;
2048         uint32_t array_len = sizeof(ipv6_l3fwd_route_array)/sizeof(ipv6_l3fwd_route_array[0]);
2049
2050         mask1 = _mm_set_epi32(ALL_32_BITS, ALL_32_BITS, ALL_32_BITS, BIT_16_TO_23);
2051         mask2 = _mm_set_epi32(0, 0, ALL_32_BITS, ALL_32_BITS);
2052         for (i = 0; i < array_len; i++) {
2053                 struct ipv6_l3fwd_route entry;
2054                 union ipv6_5tuple_host newkey;
2055                 entry = ipv6_l3fwd_route_array[i];
2056                 convert_ipv6_5tuple(&entry.key, &newkey);
2057                 ret = rte_hash_add_key (h, (void *) &newkey);
2058                 if (ret < 0) {
2059                         rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
2060                                 " to the l3fwd hash.\n", i);
2061                 }
2062                 ipv6_l3fwd_out_if[ret] = entry.if_out;
2063         }
2064         printf("Hash: Adding 0x%" PRIx32 "keys\n", array_len);
2065 }
2066
2067 #define NUMBER_PORT_USED 4
2068 static inline void
2069 populate_ipv4_many_flow_into_table(const struct rte_hash* h,
2070                 unsigned int nr_flow)
2071 {
2072         unsigned i;
2073         mask0 = _mm_set_epi32(ALL_32_BITS, ALL_32_BITS, ALL_32_BITS, BIT_8_TO_15);
2074         for (i = 0; i < nr_flow; i++) {
2075                 struct ipv4_l3fwd_route entry;
2076                 union ipv4_5tuple_host newkey;
2077                 uint8_t a = (uint8_t) ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
2078                 uint8_t b = (uint8_t) (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
2079                 uint8_t c = (uint8_t) ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
2080                 /* Create the ipv4 exact match flow */
2081                 memset(&entry, 0, sizeof(entry));
2082                 switch (i & (NUMBER_PORT_USED -1)) {
2083                 case 0:
2084                         entry = ipv4_l3fwd_route_array[0];
2085                         entry.key.ip_dst = IPv4(101,c,b,a);
2086                         break;
2087                 case 1:
2088                         entry = ipv4_l3fwd_route_array[1];
2089                         entry.key.ip_dst = IPv4(201,c,b,a);
2090                         break;
2091                 case 2:
2092                         entry = ipv4_l3fwd_route_array[2];
2093                         entry.key.ip_dst = IPv4(111,c,b,a);
2094                         break;
2095                 case 3:
2096                         entry = ipv4_l3fwd_route_array[3];
2097                         entry.key.ip_dst = IPv4(211,c,b,a);
2098                         break;
2099                 };
2100                 convert_ipv4_5tuple(&entry.key, &newkey);
2101                 int32_t ret = rte_hash_add_key(h,(void *) &newkey);
2102                 if (ret < 0) {
2103                         rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
2104                 }
2105                 ipv4_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
2106
2107         }
2108         printf("Hash: Adding 0x%x keys\n", nr_flow);
2109 }
2110
2111 static inline void
2112 populate_ipv6_many_flow_into_table(const struct rte_hash* h,
2113                 unsigned int nr_flow)
2114 {
2115         unsigned i;
2116         mask1 = _mm_set_epi32(ALL_32_BITS, ALL_32_BITS, ALL_32_BITS, BIT_16_TO_23);
2117         mask2 = _mm_set_epi32(0, 0, ALL_32_BITS, ALL_32_BITS);
2118         for (i = 0; i < nr_flow; i++) {
2119                 struct ipv6_l3fwd_route entry;
2120                 union ipv6_5tuple_host newkey;
2121                 uint8_t a = (uint8_t) ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
2122                 uint8_t b = (uint8_t) (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
2123                 uint8_t c = (uint8_t) ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
2124                 /* Create the ipv6 exact match flow */
2125                 memset(&entry, 0, sizeof(entry));
2126                 switch (i & (NUMBER_PORT_USED - 1)) {
2127                 case 0: entry = ipv6_l3fwd_route_array[0]; break;
2128                 case 1: entry = ipv6_l3fwd_route_array[1]; break;
2129                 case 2: entry = ipv6_l3fwd_route_array[2]; break;
2130                 case 3: entry = ipv6_l3fwd_route_array[3]; break;
2131                 };
2132                 entry.key.ip_dst[13] = c;
2133                 entry.key.ip_dst[14] = b;
2134                 entry.key.ip_dst[15] = a;
2135                 convert_ipv6_5tuple(&entry.key, &newkey);
2136                 int32_t ret = rte_hash_add_key(h,(void *) &newkey);
2137                 if (ret < 0) {
2138                         rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
2139                 }
2140                 ipv6_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
2141
2142         }
2143         printf("Hash: Adding 0x%x keys\n", nr_flow);
2144 }
2145
2146 static void
2147 setup_hash(int socketid)
2148 {
2149     struct rte_hash_parameters ipv4_l3fwd_hash_params = {
2150         .name = NULL,
2151         .entries = L3FWD_HASH_ENTRIES,
2152         .bucket_entries = 4,
2153         .key_len = sizeof(union ipv4_5tuple_host),
2154         .hash_func = ipv4_hash_crc,
2155         .hash_func_init_val = 0,
2156     };
2157
2158     struct rte_hash_parameters ipv6_l3fwd_hash_params = {
2159         .name = NULL,
2160         .entries = L3FWD_HASH_ENTRIES,
2161         .bucket_entries = 4,
2162         .key_len = sizeof(union ipv6_5tuple_host),
2163         .hash_func = ipv6_hash_crc,
2164         .hash_func_init_val = 0,
2165     };
2166
2167     char s[64];
2168
2169         /* create ipv4 hash */
2170         snprintf(s, sizeof(s), "ipv4_l3fwd_hash_%d", socketid);
2171         ipv4_l3fwd_hash_params.name = s;
2172         ipv4_l3fwd_hash_params.socket_id = socketid;
2173         ipv4_l3fwd_lookup_struct[socketid] = rte_hash_create(&ipv4_l3fwd_hash_params);
2174         if (ipv4_l3fwd_lookup_struct[socketid] == NULL)
2175                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
2176                                 "socket %d\n", socketid);
2177
2178         /* create ipv6 hash */
2179         snprintf(s, sizeof(s), "ipv6_l3fwd_hash_%d", socketid);
2180         ipv6_l3fwd_hash_params.name = s;
2181         ipv6_l3fwd_hash_params.socket_id = socketid;
2182         ipv6_l3fwd_lookup_struct[socketid] = rte_hash_create(&ipv6_l3fwd_hash_params);
2183         if (ipv6_l3fwd_lookup_struct[socketid] == NULL)
2184                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
2185                                 "socket %d\n", socketid);
2186
2187         if (hash_entry_number != HASH_ENTRY_NUMBER_DEFAULT) {
2188                 /* For testing hash matching with a large number of flows we
2189                  * generate millions of IP 5-tuples with an incremented dst
2190                  * address to initialize the hash table. */
2191                 if (ipv6 == 0) {
2192                         /* populate the ipv4 hash */
2193                         populate_ipv4_many_flow_into_table(
2194                                 ipv4_l3fwd_lookup_struct[socketid], hash_entry_number);
2195                 } else {
2196                         /* populate the ipv6 hash */
2197                         populate_ipv6_many_flow_into_table(
2198                                 ipv6_l3fwd_lookup_struct[socketid], hash_entry_number);
2199                 }
2200         } else {
2201                 /* Use data in ipv4/ipv6 l3fwd lookup table directly to initialize the hash table */
2202                 if (ipv6 == 0) {
2203                         /* populate the ipv4 hash */
2204                         populate_ipv4_few_flow_into_table(ipv4_l3fwd_lookup_struct[socketid]);
2205                 } else {
2206                         /* populate the ipv6 hash */
2207                         populate_ipv6_few_flow_into_table(ipv6_l3fwd_lookup_struct[socketid]);
2208                 }
2209         }
2210 }
2211 #endif
2212
2213 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
2214 static void
2215 setup_lpm(int socketid)
2216 {
2217         struct rte_lpm6_config config;
2218         unsigned i;
2219         int ret;
2220         char s[64];
2221
2222         /* create the LPM table */
2223         snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
2224         ipv4_l3fwd_lookup_struct[socketid] = rte_lpm_create(s, socketid,
2225                                 IPV4_L3FWD_LPM_MAX_RULES, 0);
2226         if (ipv4_l3fwd_lookup_struct[socketid] == NULL)
2227                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
2228                                 " on socket %d\n", socketid);
2229
2230         /* populate the LPM table */
2231         for (i = 0; i < IPV4_L3FWD_NUM_ROUTES; i++) {
2232
2233                 /* skip unused ports */
2234                 if ((1 << ipv4_l3fwd_route_array[i].if_out &
2235                                 enabled_port_mask) == 0)
2236                         continue;
2237
2238                 ret = rte_lpm_add(ipv4_l3fwd_lookup_struct[socketid],
2239                         ipv4_l3fwd_route_array[i].ip,
2240                         ipv4_l3fwd_route_array[i].depth,
2241                         ipv4_l3fwd_route_array[i].if_out);
2242
2243                 if (ret < 0) {
2244                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the "
2245                                 "l3fwd LPM table on socket %d\n",
2246                                 i, socketid);
2247                 }
2248
2249                 printf("LPM: Adding route 0x%08x / %d (%d)\n",
2250                         (unsigned)ipv4_l3fwd_route_array[i].ip,
2251                         ipv4_l3fwd_route_array[i].depth,
2252                         ipv4_l3fwd_route_array[i].if_out);
2253         }
2254
2255         /* create the LPM6 table */
2256         snprintf(s, sizeof(s), "IPV6_L3FWD_LPM_%d", socketid);
2257
2258         config.max_rules = IPV6_L3FWD_LPM_MAX_RULES;
2259         config.number_tbl8s = IPV6_L3FWD_LPM_NUMBER_TBL8S;
2260         config.flags = 0;
2261         ipv6_l3fwd_lookup_struct[socketid] = rte_lpm6_create(s, socketid,
2262                                 &config);
2263         if (ipv6_l3fwd_lookup_struct[socketid] == NULL)
2264                 rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
2265                                 " on socket %d\n", socketid);
2266
2267         /* populate the LPM table */
2268         for (i = 0; i < IPV6_L3FWD_NUM_ROUTES; i++) {
2269
2270                 /* skip unused ports */
2271                 if ((1 << ipv6_l3fwd_route_array[i].if_out &
2272                                 enabled_port_mask) == 0)
2273                         continue;
2274
2275                 ret = rte_lpm6_add(ipv6_l3fwd_lookup_struct[socketid],
2276                         ipv6_l3fwd_route_array[i].ip,
2277                         ipv6_l3fwd_route_array[i].depth,
2278                         ipv6_l3fwd_route_array[i].if_out);
2279
2280                 if (ret < 0) {
2281                         rte_exit(EXIT_FAILURE, "Unable to add entry %u to the "
2282                                 "l3fwd LPM table on socket %d\n",
2283                                 i, socketid);
2284                 }
2285
2286                 printf("LPM: Adding route %s / %d (%d)\n",
2287                         "IPV6",
2288                         ipv6_l3fwd_route_array[i].depth,
2289                         ipv6_l3fwd_route_array[i].if_out);
2290         }
2291 }
2292 #endif
2293
2294 static int
2295 init_mem(unsigned nb_mbuf)
2296 {
2297         struct lcore_conf *qconf;
2298         int socketid;
2299         unsigned lcore_id;
2300         char s[64];
2301
2302         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
2303                 if (rte_lcore_is_enabled(lcore_id) == 0)
2304                         continue;
2305
2306                 if (numa_on)
2307                         socketid = rte_lcore_to_socket_id(lcore_id);
2308                 else
2309                         socketid = 0;
2310
2311                 if (socketid >= NB_SOCKETS) {
2312                         rte_exit(EXIT_FAILURE, "Socket %d of lcore %u is out of range %d\n",
2313                                 socketid, lcore_id, NB_SOCKETS);
2314                 }
2315                 if (pktmbuf_pool[socketid] == NULL) {
2316                         snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
2317                         pktmbuf_pool[socketid] =
2318                                 rte_pktmbuf_pool_create(s, nb_mbuf,
2319                                         MEMPOOL_CACHE_SIZE, 0, MBUF_DATA_SIZE,
2320                                         socketid);
2321                         if (pktmbuf_pool[socketid] == NULL)
2322                                 rte_exit(EXIT_FAILURE,
2323                                                 "Cannot init mbuf pool on socket %d\n", socketid);
2324                         else
2325                                 printf("Allocated mbuf pool on socket %d\n", socketid);
2326
2327 #if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
2328                         setup_lpm(socketid);
2329 #else
2330                         setup_hash(socketid);
2331 #endif
2332                 }
2333                 qconf = &lcore_conf[lcore_id];
2334                 qconf->ipv4_lookup_struct = ipv4_l3fwd_lookup_struct[socketid];
2335                 qconf->ipv6_lookup_struct = ipv6_l3fwd_lookup_struct[socketid];
2336         }
2337         return 0;
2338 }
2339
2340 /* Check the link status of all ports in up to 9s, and print them finally */
2341 static void
2342 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
2343 {
2344 #define CHECK_INTERVAL 100 /* 100ms */
2345 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
2346         uint8_t portid, count, all_ports_up, print_flag = 0;
2347         struct rte_eth_link link;
2348
2349         printf("\nChecking link status");
2350         fflush(stdout);
2351         for (count = 0; count <= MAX_CHECK_TIME; count++) {
2352                 all_ports_up = 1;
2353                 for (portid = 0; portid < port_num; portid++) {
2354                         if ((port_mask & (1 << portid)) == 0)
2355                                 continue;
2356                         memset(&link, 0, sizeof(link));
2357                         rte_eth_link_get_nowait(portid, &link);
2358                         /* print link status if flag set */
2359                         if (print_flag == 1) {
2360                                 if (link.link_status)
2361                                         printf("Port %d Link Up - speed %u "
2362                                                 "Mbps - %s\n", (uint8_t)portid,
2363                                                 (unsigned)link.link_speed,
2364                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
2365                                         ("full-duplex") : ("half-duplex\n"));
2366                                 else
2367                                         printf("Port %d Link Down\n",
2368                                                 (uint8_t)portid);
2369                                 continue;
2370                         }
2371                         /* clear all_ports_up flag if any link down */
2372                         if (link.link_status == 0) {
2373                                 all_ports_up = 0;
2374                                 break;
2375                         }
2376                 }
2377                 /* after finally printing all link status, get out */
2378                 if (print_flag == 1)
2379                         break;
2380
2381                 if (all_ports_up == 0) {
2382                         printf(".");
2383                         fflush(stdout);
2384                         rte_delay_ms(CHECK_INTERVAL);
2385                 }
2386
2387                 /* set the print_flag if all ports up or timeout */
2388                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
2389                         print_flag = 1;
2390                         printf("done\n");
2391                 }
2392         }
2393 }
2394
2395 int
2396 main(int argc, char **argv)
2397 {
2398         struct lcore_conf *qconf;
2399         struct rte_eth_dev_info dev_info;
2400         struct rte_eth_txconf *txconf;
2401         int ret;
2402         unsigned nb_ports;
2403         uint16_t queueid;
2404         unsigned lcore_id;
2405         uint32_t n_tx_queue, nb_lcores;
2406         uint8_t portid, nb_rx_queue, queue, socketid;
2407
2408         /* init EAL */
2409         ret = rte_eal_init(argc, argv);
2410         if (ret < 0)
2411                 rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
2412         argc -= ret;
2413         argv += ret;
2414
2415         /* parse application arguments (after the EAL ones) */
2416         ret = parse_args(argc, argv);
2417         if (ret < 0)
2418                 rte_exit(EXIT_FAILURE, "Invalid L3FWD parameters\n");
2419
2420         if (check_lcore_params() < 0)
2421                 rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");
2422
2423         ret = init_lcore_rx_queues();
2424         if (ret < 0)
2425                 rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");
2426
2427         nb_ports = rte_eth_dev_count();
2428         if (nb_ports > RTE_MAX_ETHPORTS)
2429                 nb_ports = RTE_MAX_ETHPORTS;
2430
2431         if (check_port_config(nb_ports) < 0)
2432                 rte_exit(EXIT_FAILURE, "check_port_config failed\n");
2433
2434         nb_lcores = rte_lcore_count();
2435
2436         /* initialize all ports */
2437         for (portid = 0; portid < nb_ports; portid++) {
2438                 /* skip ports that are not enabled */
2439                 if ((enabled_port_mask & (1 << portid)) == 0) {
2440                         printf("\nSkipping disabled port %d\n", portid);
2441                         continue;
2442                 }
2443
2444                 /* init port */
2445                 printf("Initializing port %d ... ", portid );
2446                 fflush(stdout);
2447
2448                 nb_rx_queue = get_port_n_rx_queues(portid);
2449                 n_tx_queue = nb_lcores;
2450                 if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
2451                         n_tx_queue = MAX_TX_QUEUE_PER_PORT;
2452                 printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
2453                         nb_rx_queue, (unsigned)n_tx_queue );
2454                 ret = rte_eth_dev_configure(portid, nb_rx_queue,
2455                                         (uint16_t)n_tx_queue, &port_conf);
2456                 if (ret < 0)
2457                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%d\n",
2458                                 ret, portid);
2459
2460                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
2461                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
2462                 printf(", ");
2463
2464                 /*
2465                  * prepare dst and src MACs for each port.
2466                  */
2467                 *(uint64_t *)(val_eth + portid) =
2468                         ETHER_LOCAL_ADMIN_ADDR + ((uint64_t)portid << 40);
2469                 ether_addr_copy(&ports_eth_addr[portid],
2470                         (struct ether_addr *)(val_eth + portid) + 1);
2471
2472                 /* init memory */
2473                 ret = init_mem(NB_MBUF);
2474                 if (ret < 0)
2475                         rte_exit(EXIT_FAILURE, "init_mem failed\n");
2476
2477                 /* init one TX queue per couple (lcore,port) */
2478                 queueid = 0;
2479                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
2480                         if (rte_lcore_is_enabled(lcore_id) == 0)
2481                                 continue;
2482
2483                         if (numa_on)
2484                                 socketid = (uint8_t)rte_lcore_to_socket_id(lcore_id);
2485                         else
2486                                 socketid = 0;
2487
2488                         printf("txq=%u,%d,%d ", lcore_id, queueid, socketid);
2489                         fflush(stdout);
2490
2491                         rte_eth_dev_info_get(portid, &dev_info);
2492                         txconf = &dev_info.default_txconf;
2493                         if (port_conf.rxmode.jumbo_frame)
2494                                 txconf->txq_flags = 0;
2495                         ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
2496                                                      socketid, txconf);
2497                         if (ret < 0)
2498                                 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
2499                                         "port=%d\n", ret, portid);
2500
2501                         qconf = &lcore_conf[lcore_id];
2502                         qconf->tx_queue_id[portid] = queueid;
2503                         queueid++;
2504                 }
2505                 printf("\n");
2506         }
2507
2508         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
2509                 if (rte_lcore_is_enabled(lcore_id) == 0)
2510                         continue;
2511                 qconf = &lcore_conf[lcore_id];
2512                 printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
2513                 fflush(stdout);
2514                 /* init RX queues */
2515                 for(queue = 0; queue < qconf->n_rx_queue; ++queue) {
2516                         portid = qconf->rx_queue_list[queue].port_id;
2517                         queueid = qconf->rx_queue_list[queue].queue_id;
2518
2519                         if (numa_on)
2520                                 socketid = (uint8_t)rte_lcore_to_socket_id(lcore_id);
2521                         else
2522                                 socketid = 0;
2523
2524                         printf("rxq=%d,%d,%d ", portid, queueid, socketid);
2525                         fflush(stdout);
2526
2527                         ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
2528                                         socketid,
2529                                         NULL,
2530                                         pktmbuf_pool[socketid]);
2531                         if (ret < 0)
2532                                 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d,"
2533                                                 "port=%d\n", ret, portid);
2534                 }
2535         }
2536
2537         printf("\n");
2538
2539         /* start ports */
2540         for (portid = 0; portid < nb_ports; portid++) {
2541                 if ((enabled_port_mask & (1 << portid)) == 0) {
2542                         continue;
2543                 }
2544                 /* Start device */
2545                 ret = rte_eth_dev_start(portid);
2546                 if (ret < 0)
2547                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
2548                                 ret, portid);
2549
2550                 /*
2551                  * If enabled, put device in promiscuous mode.
2552                  * This allows IO forwarding mode to forward packets
2553                  * to itself through 2 cross-connected  ports of the
2554                  * target machine.
2555                  */
2556                 if (promiscuous_on)
2557                         rte_eth_promiscuous_enable(portid);
2558         }
2559
2560         check_all_ports_link_status((uint8_t)nb_ports, enabled_port_mask);
2561
2562         /* launch per-lcore init on every lcore */
2563         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
2564         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
2565                 if (rte_eal_wait_lcore(lcore_id) < 0)
2566                         return -1;
2567         }
2568
2569         return 0;
2570 }