examples/l3fwd/l3fwd_em.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2016 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <stdint.h>
   8 #include <inttypes.h>
   9 #include <sys/types.h>
  10 #include <string.h>
  11 #include <sys/queue.h>
  12 #include <stdarg.h>
  13 #include <errno.h>
  14 #include <getopt.h>
  15 #include <stdbool.h>
  16 #include <netinet/in.h>
  17
  18 #include <rte_debug.h>
  19 #include <rte_ether.h>
  20 #include <rte_ethdev.h>
  21 #include <rte_cycles.h>
  22 #include <rte_mbuf.h>
  23 #include <rte_ip.h>
  24 #include <rte_tcp.h>
  25 #include <rte_udp.h>
  26 #include <rte_hash.h>
  27
  28 #include "l3fwd.h"
  29
  30 #if defined(RTE_ARCH_X86) || defined(RTE_MACHINE_CPUFLAG_CRC32)
  31 #define EM_HASH_CRC 1
  32 #endif
  33
  34 #ifdef EM_HASH_CRC
  35 #include <rte_hash_crc.h>
  36 #define DEFAULT_HASH_FUNC       rte_hash_crc
  37 #else
  38 #include <rte_jhash.h>
  39 #define DEFAULT_HASH_FUNC       rte_jhash
  40 #endif
  41
  42 #define IPV6_ADDR_LEN 16
  43
  44 struct ipv4_5tuple {
  45         uint32_t ip_dst;
  46         uint32_t ip_src;
  47         uint16_t port_dst;
  48         uint16_t port_src;
  49         uint8_t  proto;
  50 } __attribute__((__packed__));
  51
  52 union ipv4_5tuple_host {
  53         struct {
  54                 uint8_t  pad0;
  55                 uint8_t  proto;
  56                 uint16_t pad1;
  57                 uint32_t ip_src;
  58                 uint32_t ip_dst;
  59                 uint16_t port_src;
  60                 uint16_t port_dst;
  61         };
  62         xmm_t xmm;
  63 };
  64
  65 #define XMM_NUM_IN_IPV6_5TUPLE 3
  66
  67 struct ipv6_5tuple {
  68         uint8_t  ip_dst[IPV6_ADDR_LEN];
  69         uint8_t  ip_src[IPV6_ADDR_LEN];
  70         uint16_t port_dst;
  71         uint16_t port_src;
  72         uint8_t  proto;
  73 } __attribute__((__packed__));
  74
  75 union ipv6_5tuple_host {
  76         struct {
  77                 uint16_t pad0;
  78                 uint8_t  proto;
  79                 uint8_t  pad1;
  80                 uint8_t  ip_src[IPV6_ADDR_LEN];
  81                 uint8_t  ip_dst[IPV6_ADDR_LEN];
  82                 uint16_t port_src;
  83                 uint16_t port_dst;
  84                 uint64_t reserve;
  85         };
  86         xmm_t xmm[XMM_NUM_IN_IPV6_5TUPLE];
  87 };
  88
  89
  90
  91 struct ipv4_l3fwd_em_route {
  92         struct ipv4_5tuple key;
  93         uint8_t if_out;
  94 };
  95
  96 struct ipv6_l3fwd_em_route {
  97         struct ipv6_5tuple key;
  98         uint8_t if_out;
  99 };
 100
 101 static struct ipv4_l3fwd_em_route ipv4_l3fwd_em_route_array[] = {
 102         {{RTE_IPv4(101, 0, 0, 0), RTE_IPv4(100, 10, 0, 1),  101, 11, IPPROTO_TCP}, 0},
 103         {{RTE_IPv4(201, 0, 0, 0), RTE_IPv4(200, 20, 0, 1),  102, 12, IPPROTO_TCP}, 1},
 104         {{RTE_IPv4(111, 0, 0, 0), RTE_IPv4(100, 30, 0, 1),  101, 11, IPPROTO_TCP}, 2},
 105         {{RTE_IPv4(211, 0, 0, 0), RTE_IPv4(200, 40, 0, 1),  102, 12, IPPROTO_TCP}, 3},
 106 };
 107
 108 static struct ipv6_l3fwd_em_route ipv6_l3fwd_em_route_array[] = {
 109         {{
 110         {0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
 111         {0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
 112         101, 11, IPPROTO_TCP}, 0},
 113
 114         {{
 115         {0xfe, 0x90, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
 116         {0xfe, 0x90, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
 117         102, 12, IPPROTO_TCP}, 1},
 118
 119         {{
 120         {0xfe, 0xa0, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
 121         {0xfe, 0xa0, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
 122         101, 11, IPPROTO_TCP}, 2},
 123
 124         {{
 125         {0xfe, 0xb0, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
 126         {0xfe, 0xb0, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
 127         102, 12, IPPROTO_TCP}, 3},
 128 };
 129
 130 struct rte_hash *ipv4_l3fwd_em_lookup_struct[NB_SOCKETS];
 131 struct rte_hash *ipv6_l3fwd_em_lookup_struct[NB_SOCKETS];
 132
 133 static inline uint32_t
 134 ipv4_hash_crc(const void *data, __rte_unused uint32_t data_len,
 135                 uint32_t init_val)
 136 {
 137         const union ipv4_5tuple_host *k;
 138         uint32_t t;
 139         const uint32_t *p;
 140
 141         k = data;
 142         t = k->proto;
 143         p = (const uint32_t *)&k->port_src;
 144
 145 #ifdef EM_HASH_CRC
 146         init_val = rte_hash_crc_4byte(t, init_val);
 147         init_val = rte_hash_crc_4byte(k->ip_src, init_val);
 148         init_val = rte_hash_crc_4byte(k->ip_dst, init_val);
 149         init_val = rte_hash_crc_4byte(*p, init_val);
 150 #else
 151         init_val = rte_jhash_1word(t, init_val);
 152         init_val = rte_jhash_1word(k->ip_src, init_val);
 153         init_val = rte_jhash_1word(k->ip_dst, init_val);
 154         init_val = rte_jhash_1word(*p, init_val);
 155 #endif
 156
 157         return init_val;
 158 }
 159
 160 static inline uint32_t
 161 ipv6_hash_crc(const void *data, __rte_unused uint32_t data_len,
 162                 uint32_t init_val)
 163 {
 164         const union ipv6_5tuple_host *k;
 165         uint32_t t;
 166         const uint32_t *p;
 167 #ifdef EM_HASH_CRC
 168         const uint32_t  *ip_src0, *ip_src1, *ip_src2, *ip_src3;
 169         const uint32_t  *ip_dst0, *ip_dst1, *ip_dst2, *ip_dst3;
 170 #endif
 171
 172         k = data;
 173         t = k->proto;
 174         p = (const uint32_t *)&k->port_src;
 175
 176 #ifdef EM_HASH_CRC
 177         ip_src0 = (const uint32_t *) k->ip_src;
 178         ip_src1 = (const uint32_t *)(k->ip_src+4);
 179         ip_src2 = (const uint32_t *)(k->ip_src+8);
 180         ip_src3 = (const uint32_t *)(k->ip_src+12);
 181         ip_dst0 = (const uint32_t *) k->ip_dst;
 182         ip_dst1 = (const uint32_t *)(k->ip_dst+4);
 183         ip_dst2 = (const uint32_t *)(k->ip_dst+8);
 184         ip_dst3 = (const uint32_t *)(k->ip_dst+12);
 185         init_val = rte_hash_crc_4byte(t, init_val);
 186         init_val = rte_hash_crc_4byte(*ip_src0, init_val);
 187         init_val = rte_hash_crc_4byte(*ip_src1, init_val);
 188         init_val = rte_hash_crc_4byte(*ip_src2, init_val);
 189         init_val = rte_hash_crc_4byte(*ip_src3, init_val);
 190         init_val = rte_hash_crc_4byte(*ip_dst0, init_val);
 191         init_val = rte_hash_crc_4byte(*ip_dst1, init_val);
 192         init_val = rte_hash_crc_4byte(*ip_dst2, init_val);
 193         init_val = rte_hash_crc_4byte(*ip_dst3, init_val);
 194         init_val = rte_hash_crc_4byte(*p, init_val);
 195 #else
 196         init_val = rte_jhash_1word(t, init_val);
 197         init_val = rte_jhash(k->ip_src,
 198                         sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
 199         init_val = rte_jhash(k->ip_dst,
 200                         sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
 201         init_val = rte_jhash_1word(*p, init_val);
 202 #endif
 203         return init_val;
 204 }
 205
 206 #define IPV4_L3FWD_EM_NUM_ROUTES \
 207         (sizeof(ipv4_l3fwd_em_route_array) / sizeof(ipv4_l3fwd_em_route_array[0]))
 208
 209 #define IPV6_L3FWD_EM_NUM_ROUTES \
 210         (sizeof(ipv6_l3fwd_em_route_array) / sizeof(ipv6_l3fwd_em_route_array[0]))
 211
 212 static uint8_t ipv4_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 213 static uint8_t ipv6_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
 214
 215 static rte_xmm_t mask0;
 216 static rte_xmm_t mask1;
 217 static rte_xmm_t mask2;
 218
 219 #if defined(RTE_MACHINE_CPUFLAG_SSE2)
 220 static inline xmm_t
 221 em_mask_key(void *key, xmm_t mask)
 222 {
 223         __m128i data = _mm_loadu_si128((__m128i *)(key));
 224
 225         return _mm_and_si128(data, mask);
 226 }
 227 #elif defined(RTE_MACHINE_CPUFLAG_NEON)
 228 static inline xmm_t
 229 em_mask_key(void *key, xmm_t mask)
 230 {
 231         int32x4_t data = vld1q_s32((int32_t *)key);
 232
 233         return vandq_s32(data, mask);
 234 }
 235 #elif defined(RTE_MACHINE_CPUFLAG_ALTIVEC)
 236 static inline xmm_t
 237 em_mask_key(void *key, xmm_t mask)
 238 {
 239         xmm_t data = vec_ld(0, (xmm_t *)(key));
 240
 241         return vec_and(data, mask);
 242 }
 243 #else
 244 #error No vector engine (SSE, NEON, ALTIVEC) available, check your toolchain
 245 #endif
 246
 247 static inline uint16_t
 248 em_get_ipv4_dst_port(void *ipv4_hdr, uint16_t portid, void *lookup_struct)
 249 {
 250         int ret = 0;
 251         union ipv4_5tuple_host key;
 252         struct rte_hash *ipv4_l3fwd_lookup_struct =
 253                 (struct rte_hash *)lookup_struct;
 254
 255         ipv4_hdr = (uint8_t *)ipv4_hdr +
 256                 offsetof(struct rte_ipv4_hdr, time_to_live);
 257
 258         /*
 259          * Get 5 tuple: dst port, src port, dst IP address,
 260          * src IP address and protocol.
 261          */
 262         key.xmm = em_mask_key(ipv4_hdr, mask0.x);
 263
 264         /* Find destination port */
 265         ret = rte_hash_lookup(ipv4_l3fwd_lookup_struct, (const void *)&key);
 266         return (ret < 0) ? portid : ipv4_l3fwd_out_if[ret];
 267 }
 268
 269 static inline uint16_t
 270 em_get_ipv6_dst_port(void *ipv6_hdr, uint16_t portid, void *lookup_struct)
 271 {
 272         int ret = 0;
 273         union ipv6_5tuple_host key;
 274         struct rte_hash *ipv6_l3fwd_lookup_struct =
 275                 (struct rte_hash *)lookup_struct;
 276
 277         ipv6_hdr = (uint8_t *)ipv6_hdr +
 278                 offsetof(struct rte_ipv6_hdr, payload_len);
 279         void *data0 = ipv6_hdr;
 280         void *data1 = ((uint8_t *)ipv6_hdr) + sizeof(xmm_t);
 281         void *data2 = ((uint8_t *)ipv6_hdr) + sizeof(xmm_t) + sizeof(xmm_t);
 282
 283         /* Get part of 5 tuple: src IP address lower 96 bits and protocol */
 284         key.xmm[0] = em_mask_key(data0, mask1.x);
 285
 286         /*
 287          * Get part of 5 tuple: dst IP address lower 96 bits
 288          * and src IP address higher 32 bits.
 289          */
 290         key.xmm[1] = *(xmm_t *)data1;
 291
 292         /*
 293          * Get part of 5 tuple: dst port and src port
 294          * and dst IP address higher 32 bits.
 295          */
 296         key.xmm[2] = em_mask_key(data2, mask2.x);
 297
 298         /* Find destination port */
 299         ret = rte_hash_lookup(ipv6_l3fwd_lookup_struct, (const void *)&key);
 300         return (ret < 0) ? portid : ipv6_l3fwd_out_if[ret];
 301 }
 302
 303 #if defined RTE_ARCH_X86 || defined RTE_MACHINE_CPUFLAG_NEON
 304 #if defined(NO_HASH_MULTI_LOOKUP)
 305 #include "l3fwd_em_sequential.h"
 306 #else
 307 #include "l3fwd_em_hlm.h"
 308 #endif
 309 #else
 310 #include "l3fwd_em.h"
 311 #endif
 312
 313 static void
 314 convert_ipv4_5tuple(struct ipv4_5tuple *key1,
 315                 union ipv4_5tuple_host *key2)
 316 {
 317         key2->ip_dst = rte_cpu_to_be_32(key1->ip_dst);
 318         key2->ip_src = rte_cpu_to_be_32(key1->ip_src);
 319         key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
 320         key2->port_src = rte_cpu_to_be_16(key1->port_src);
 321         key2->proto = key1->proto;
 322         key2->pad0 = 0;
 323         key2->pad1 = 0;
 324 }
 325
 326 static void
 327 convert_ipv6_5tuple(struct ipv6_5tuple *key1,
 328                 union ipv6_5tuple_host *key2)
 329 {
 330         uint32_t i;
 331
 332         for (i = 0; i < 16; i++) {
 333                 key2->ip_dst[i] = key1->ip_dst[i];
 334                 key2->ip_src[i] = key1->ip_src[i];
 335         }
 336         key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
 337         key2->port_src = rte_cpu_to_be_16(key1->port_src);
 338         key2->proto = key1->proto;
 339         key2->pad0 = 0;
 340         key2->pad1 = 0;
 341         key2->reserve = 0;
 342 }
 343
 344 #define BYTE_VALUE_MAX 256
 345 #define ALL_32_BITS 0xffffffff
 346 #define BIT_8_TO_15 0x0000ff00
 347
 348 static inline void
 349 populate_ipv4_few_flow_into_table(const struct rte_hash *h)
 350 {
 351         uint32_t i;
 352         int32_t ret;
 353
 354         mask0 = (rte_xmm_t){.u32 = {BIT_8_TO_15, ALL_32_BITS,
 355                                 ALL_32_BITS, ALL_32_BITS} };
 356
 357         for (i = 0; i < IPV4_L3FWD_EM_NUM_ROUTES; i++) {
 358                 struct ipv4_l3fwd_em_route  entry;
 359                 union ipv4_5tuple_host newkey;
 360
 361                 entry = ipv4_l3fwd_em_route_array[i];
 362                 convert_ipv4_5tuple(&entry.key, &newkey);
 363                 ret = rte_hash_add_key(h, (void *) &newkey);
 364                 if (ret < 0) {
 365                         rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
 366                                 " to the l3fwd hash.\n", i);
 367                 }
 368                 ipv4_l3fwd_out_if[ret] = entry.if_out;
 369         }
 370         printf("Hash: Adding 0x%" PRIx64 " keys\n",
 371                 (uint64_t)IPV4_L3FWD_EM_NUM_ROUTES);
 372 }
 373
 374 #define BIT_16_TO_23 0x00ff0000
 375 static inline void
 376 populate_ipv6_few_flow_into_table(const struct rte_hash *h)
 377 {
 378         uint32_t i;
 379         int32_t ret;
 380
 381         mask1 = (rte_xmm_t){.u32 = {BIT_16_TO_23, ALL_32_BITS,
 382                                 ALL_32_BITS, ALL_32_BITS} };
 383
 384         mask2 = (rte_xmm_t){.u32 = {ALL_32_BITS, ALL_32_BITS, 0, 0} };
 385
 386         for (i = 0; i < IPV6_L3FWD_EM_NUM_ROUTES; i++) {
 387                 struct ipv6_l3fwd_em_route entry;
 388                 union ipv6_5tuple_host newkey;
 389
 390                 entry = ipv6_l3fwd_em_route_array[i];
 391                 convert_ipv6_5tuple(&entry.key, &newkey);
 392                 ret = rte_hash_add_key(h, (void *) &newkey);
 393                 if (ret < 0) {
 394                         rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
 395                                 " to the l3fwd hash.\n", i);
 396                 }
 397                 ipv6_l3fwd_out_if[ret] = entry.if_out;
 398         }
 399         printf("Hash: Adding 0x%" PRIx64 "keys\n",
 400                 (uint64_t)IPV6_L3FWD_EM_NUM_ROUTES);
 401 }
 402
 403 #define NUMBER_PORT_USED 4
 404 static inline void
 405 populate_ipv4_many_flow_into_table(const struct rte_hash *h,
 406                 unsigned int nr_flow)
 407 {
 408         unsigned i;
 409
 410         mask0 = (rte_xmm_t){.u32 = {BIT_8_TO_15, ALL_32_BITS,
 411                                 ALL_32_BITS, ALL_32_BITS} };
 412
 413         for (i = 0; i < nr_flow; i++) {
 414                 struct ipv4_l3fwd_em_route entry;
 415                 union ipv4_5tuple_host newkey;
 416
 417                 uint8_t a = (uint8_t)
 418                         ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
 419                 uint8_t b = (uint8_t)
 420                         (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
 421                 uint8_t c = (uint8_t)
 422                         ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
 423
 424                 /* Create the ipv4 exact match flow */
 425                 memset(&entry, 0, sizeof(entry));
 426                 switch (i & (NUMBER_PORT_USED - 1)) {
 427                 case 0:
 428                         entry = ipv4_l3fwd_em_route_array[0];
 429                         entry.key.ip_dst = RTE_IPv4(101, c, b, a);
 430                         break;
 431                 case 1:
 432                         entry = ipv4_l3fwd_em_route_array[1];
 433                         entry.key.ip_dst = RTE_IPv4(201, c, b, a);
 434                         break;
 435                 case 2:
 436                         entry = ipv4_l3fwd_em_route_array[2];
 437                         entry.key.ip_dst = RTE_IPv4(111, c, b, a);
 438                         break;
 439                 case 3:
 440                         entry = ipv4_l3fwd_em_route_array[3];
 441                         entry.key.ip_dst = RTE_IPv4(211, c, b, a);
 442                         break;
 443                 };
 444                 convert_ipv4_5tuple(&entry.key, &newkey);
 445                 int32_t ret = rte_hash_add_key(h, (void *) &newkey);
 446
 447                 if (ret < 0)
 448                         rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
 449
 450                 ipv4_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
 451
 452         }
 453         printf("Hash: Adding 0x%x keys\n", nr_flow);
 454 }
 455
 456 static inline void
 457 populate_ipv6_many_flow_into_table(const struct rte_hash *h,
 458                 unsigned int nr_flow)
 459 {
 460         unsigned i;
 461
 462         mask1 = (rte_xmm_t){.u32 = {BIT_16_TO_23, ALL_32_BITS,
 463                                 ALL_32_BITS, ALL_32_BITS} };
 464         mask2 = (rte_xmm_t){.u32 = {ALL_32_BITS, ALL_32_BITS, 0, 0} };
 465
 466         for (i = 0; i < nr_flow; i++) {
 467                 struct ipv6_l3fwd_em_route entry;
 468                 union ipv6_5tuple_host newkey;
 469
 470                 uint8_t a = (uint8_t)
 471                         ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
 472                 uint8_t b = (uint8_t)
 473                         (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
 474                 uint8_t c = (uint8_t)
 475                         ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
 476
 477                 /* Create the ipv6 exact match flow */
 478                 memset(&entry, 0, sizeof(entry));
 479                 switch (i & (NUMBER_PORT_USED - 1)) {
 480                 case 0:
 481                         entry = ipv6_l3fwd_em_route_array[0];
 482                         break;
 483                 case 1:
 484                         entry = ipv6_l3fwd_em_route_array[1];
 485                         break;
 486                 case 2:
 487                         entry = ipv6_l3fwd_em_route_array[2];
 488                         break;
 489                 case 3:
 490                         entry = ipv6_l3fwd_em_route_array[3];
 491                         break;
 492                 };
 493                 entry.key.ip_dst[13] = c;
 494                 entry.key.ip_dst[14] = b;
 495                 entry.key.ip_dst[15] = a;
 496                 convert_ipv6_5tuple(&entry.key, &newkey);
 497                 int32_t ret = rte_hash_add_key(h, (void *) &newkey);
 498
 499                 if (ret < 0)
 500                         rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
 501
 502                 ipv6_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
 503
 504         }
 505         printf("Hash: Adding 0x%x keys\n", nr_flow);
 506 }
 507
 508 /* Requirements:
 509  * 1. IP packets without extension;
 510  * 2. L4 payload should be either TCP or UDP.
 511  */
 512 int
 513 em_check_ptype(int portid)
 514 {
 515         int i, ret;
 516         int ptype_l3_ipv4_ext = 0;
 517         int ptype_l3_ipv6_ext = 0;
 518         int ptype_l4_tcp = 0;
 519         int ptype_l4_udp = 0;
 520         uint32_t ptype_mask = RTE_PTYPE_L3_MASK | RTE_PTYPE_L4_MASK;
 521
 522         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
 523         if (ret <= 0)
 524                 return 0;
 525
 526         uint32_t ptypes[ret];
 527
 528         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
 529         for (i = 0; i < ret; ++i) {
 530                 switch (ptypes[i]) {
 531                 case RTE_PTYPE_L3_IPV4_EXT:
 532                         ptype_l3_ipv4_ext = 1;
 533                         break;
 534                 case RTE_PTYPE_L3_IPV6_EXT:
 535                         ptype_l3_ipv6_ext = 1;
 536                         break;
 537                 case RTE_PTYPE_L4_TCP:
 538                         ptype_l4_tcp = 1;
 539                         break;
 540                 case RTE_PTYPE_L4_UDP:
 541                         ptype_l4_udp = 1;
 542                         break;
 543                 }
 544         }
 545
 546         if (ptype_l3_ipv4_ext == 0)
 547                 printf("port %d cannot parse RTE_PTYPE_L3_IPV4_EXT\n", portid);
 548         if (ptype_l3_ipv6_ext == 0)
 549                 printf("port %d cannot parse RTE_PTYPE_L3_IPV6_EXT\n", portid);
 550         if (!ptype_l3_ipv4_ext || !ptype_l3_ipv6_ext)
 551                 return 0;
 552
 553         if (ptype_l4_tcp == 0)
 554                 printf("port %d cannot parse RTE_PTYPE_L4_TCP\n", portid);
 555         if (ptype_l4_udp == 0)
 556                 printf("port %d cannot parse RTE_PTYPE_L4_UDP\n", portid);
 557         if (ptype_l4_tcp && ptype_l4_udp)
 558                 return 1;
 559
 560         return 0;
 561 }
 562
 563 static inline void
 564 em_parse_ptype(struct rte_mbuf *m)
 565 {
 566         struct rte_ether_hdr *eth_hdr;
 567         uint32_t packet_type = RTE_PTYPE_UNKNOWN;
 568         uint16_t ether_type;
 569         void *l3;
 570         int hdr_len;
 571         struct rte_ipv4_hdr *ipv4_hdr;
 572         struct rte_ipv6_hdr *ipv6_hdr;
 573
 574         eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 575         ether_type = eth_hdr->ether_type;
 576         l3 = (uint8_t *)eth_hdr + sizeof(struct rte_ether_hdr);
 577         if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPv4)) {
 578                 ipv4_hdr = (struct rte_ipv4_hdr *)l3;
 579                 hdr_len = (ipv4_hdr->version_ihl & RTE_IPV4_HDR_IHL_MASK) *
 580                           RTE_IPV4_IHL_MULTIPLIER;
 581                 if (hdr_len == sizeof(struct rte_ipv4_hdr)) {
 582                         packet_type |= RTE_PTYPE_L3_IPV4;
 583                         if (ipv4_hdr->next_proto_id == IPPROTO_TCP)
 584                                 packet_type |= RTE_PTYPE_L4_TCP;
 585                         else if (ipv4_hdr->next_proto_id == IPPROTO_UDP)
 586                                 packet_type |= RTE_PTYPE_L4_UDP;
 587                 } else
 588                         packet_type |= RTE_PTYPE_L3_IPV4_EXT;
 589         } else if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPv6)) {
 590                 ipv6_hdr = (struct rte_ipv6_hdr *)l3;
 591                 if (ipv6_hdr->proto == IPPROTO_TCP)
 592                         packet_type |= RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP;
 593                 else if (ipv6_hdr->proto == IPPROTO_UDP)
 594                         packet_type |= RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP;
 595                 else
 596                         packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 597         }
 598
 599         m->packet_type = packet_type;
 600 }
 601
 602 uint16_t
 603 em_cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
 604                   struct rte_mbuf *pkts[], uint16_t nb_pkts,
 605                   uint16_t max_pkts __rte_unused,
 606                   void *user_param __rte_unused)
 607 {
 608         unsigned i;
 609
 610         for (i = 0; i < nb_pkts; ++i)
 611                 em_parse_ptype(pkts[i]);
 612
 613         return nb_pkts;
 614 }
 615
 616 /* main processing loop */
 617 int
 618 em_main_loop(__attribute__((unused)) void *dummy)
 619 {
 620         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 621         unsigned lcore_id;
 622         uint64_t prev_tsc, diff_tsc, cur_tsc;
 623         int i, nb_rx;
 624         uint8_t queueid;
 625         uint16_t portid;
 626         struct lcore_conf *qconf;
 627         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
 628                 US_PER_S * BURST_TX_DRAIN_US;
 629
 630         prev_tsc = 0;
 631
 632         lcore_id = rte_lcore_id();
 633         qconf = &lcore_conf[lcore_id];
 634
 635         if (qconf->n_rx_queue == 0) {
 636                 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
 637                 return 0;
 638         }
 639
 640         RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
 641
 642         for (i = 0; i < qconf->n_rx_queue; i++) {
 643
 644                 portid = qconf->rx_queue_list[i].port_id;
 645                 queueid = qconf->rx_queue_list[i].queue_id;
 646                 RTE_LOG(INFO, L3FWD,
 647                         " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
 648                         lcore_id, portid, queueid);
 649         }
 650
 651         while (!force_quit) {
 652
 653                 cur_tsc = rte_rdtsc();
 654
 655                 /*
 656                  * TX burst queue drain
 657                  */
 658                 diff_tsc = cur_tsc - prev_tsc;
 659                 if (unlikely(diff_tsc > drain_tsc)) {
 660
 661                         for (i = 0; i < qconf->n_tx_port; ++i) {
 662                                 portid = qconf->tx_port_id[i];
 663                                 if (qconf->tx_mbufs[portid].len == 0)
 664                                         continue;
 665                                 send_burst(qconf,
 666                                         qconf->tx_mbufs[portid].len,
 667                                         portid);
 668                                 qconf->tx_mbufs[portid].len = 0;
 669                         }
 670
 671                         prev_tsc = cur_tsc;
 672                 }
 673
 674                 /*
 675                  * Read packet from RX queues
 676                  */
 677                 for (i = 0; i < qconf->n_rx_queue; ++i) {
 678                         portid = qconf->rx_queue_list[i].port_id;
 679                         queueid = qconf->rx_queue_list[i].queue_id;
 680                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
 681                                 MAX_PKT_BURST);
 682                         if (nb_rx == 0)
 683                                 continue;
 684
 685 #if defined RTE_ARCH_X86 || defined RTE_MACHINE_CPUFLAG_NEON
 686                         l3fwd_em_send_packets(nb_rx, pkts_burst,
 687                                                         portid, qconf);
 688 #else
 689                         l3fwd_em_no_opt_send_packets(nb_rx, pkts_burst,
 690                                                         portid, qconf);
 691 #endif
 692                 }
 693         }
 694
 695         return 0;
 696 }
 697
 698 /*
 699  * Initialize exact match (hash) parameters.
 700  */
 701 void
 702 setup_hash(const int socketid)
 703 {
 704         struct rte_hash_parameters ipv4_l3fwd_hash_params = {
 705                 .name = NULL,
 706                 .entries = L3FWD_HASH_ENTRIES,
 707                 .key_len = sizeof(union ipv4_5tuple_host),
 708                 .hash_func = ipv4_hash_crc,
 709                 .hash_func_init_val = 0,
 710         };
 711
 712         struct rte_hash_parameters ipv6_l3fwd_hash_params = {
 713                 .name = NULL,
 714                 .entries = L3FWD_HASH_ENTRIES,
 715                 .key_len = sizeof(union ipv6_5tuple_host),
 716                 .hash_func = ipv6_hash_crc,
 717                 .hash_func_init_val = 0,
 718         };
 719
 720         char s[64];
 721
 722         /* create ipv4 hash */
 723         snprintf(s, sizeof(s), "ipv4_l3fwd_hash_%d", socketid);
 724         ipv4_l3fwd_hash_params.name = s;
 725         ipv4_l3fwd_hash_params.socket_id = socketid;
 726         ipv4_l3fwd_em_lookup_struct[socketid] =
 727                 rte_hash_create(&ipv4_l3fwd_hash_params);
 728         if (ipv4_l3fwd_em_lookup_struct[socketid] == NULL)
 729                 rte_exit(EXIT_FAILURE,
 730                         "Unable to create the l3fwd hash on socket %d\n",
 731                         socketid);
 732
 733         /* create ipv6 hash */
 734         snprintf(s, sizeof(s), "ipv6_l3fwd_hash_%d", socketid);
 735         ipv6_l3fwd_hash_params.name = s;
 736         ipv6_l3fwd_hash_params.socket_id = socketid;
 737         ipv6_l3fwd_em_lookup_struct[socketid] =
 738                 rte_hash_create(&ipv6_l3fwd_hash_params);
 739         if (ipv6_l3fwd_em_lookup_struct[socketid] == NULL)
 740                 rte_exit(EXIT_FAILURE,
 741                         "Unable to create the l3fwd hash on socket %d\n",
 742                         socketid);
 743
 744         if (hash_entry_number != HASH_ENTRY_NUMBER_DEFAULT) {
 745                 /* For testing hash matching with a large number of flows we
 746                  * generate millions of IP 5-tuples with an incremented dst
 747                  * address to initialize the hash table. */
 748                 if (ipv6 == 0) {
 749                         /* populate the ipv4 hash */
 750                         populate_ipv4_many_flow_into_table(
 751                                 ipv4_l3fwd_em_lookup_struct[socketid],
 752                                 hash_entry_number);
 753                 } else {
 754                         /* populate the ipv6 hash */
 755                         populate_ipv6_many_flow_into_table(
 756                                 ipv6_l3fwd_em_lookup_struct[socketid],
 757                                 hash_entry_number);
 758                 }
 759         } else {
 760                 /*
 761                  * Use data in ipv4/ipv6 l3fwd lookup table
 762                  * directly to initialize the hash table.
 763                  */
 764                 if (ipv6 == 0) {
 765                         /* populate the ipv4 hash */
 766                         populate_ipv4_few_flow_into_table(
 767                                 ipv4_l3fwd_em_lookup_struct[socketid]);
 768                 } else {
 769                         /* populate the ipv6 hash */
 770                         populate_ipv6_few_flow_into_table(
 771                                 ipv6_l3fwd_em_lookup_struct[socketid]);
 772                 }
 773         }
 774 }
 775
 776 /* Return ipv4/ipv6 em fwd lookup struct. */
 777 void *
 778 em_get_ipv4_l3fwd_lookup_struct(const int socketid)
 779 {
 780         return ipv4_l3fwd_em_lookup_struct[socketid];
 781 }
 782
 783 void *
 784 em_get_ipv6_l3fwd_lookup_struct(const int socketid)
 785 {
 786         return ipv6_l3fwd_em_lookup_struct[socketid];
 787 }