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