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         {{IPv4(101, 0, 0, 0), IPv4(100, 10, 0, 1),  101, 11, IPPROTO_TCP}, 0},
 103         {{IPv4(201, 0, 0, 0), IPv4(200, 20, 0, 1),  102, 12, IPPROTO_TCP}, 1},
 104         {{IPv4(111, 0, 0, 0), IPv4(100, 30, 0, 1),  101, 11, IPPROTO_TCP}, 2},
 105         {{IPv4(211, 0, 0, 0), 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 + offsetof(struct ipv4_hdr, time_to_live);
 256
 257         /*
 258          * Get 5 tuple: dst port, src port, dst IP address,
 259          * src IP address and protocol.
 260          */
 261         key.xmm = em_mask_key(ipv4_hdr, mask0.x);
 262
 263         /* Find destination port */
 264         ret = rte_hash_lookup(ipv4_l3fwd_lookup_struct, (const void *)&key);
 265         return (ret < 0) ? portid : ipv4_l3fwd_out_if[ret];
 266 }
 267
 268 static inline uint16_t
 269 em_get_ipv6_dst_port(void *ipv6_hdr, uint16_t portid, void *lookup_struct)
 270 {
 271         int ret = 0;
 272         union ipv6_5tuple_host key;
 273         struct rte_hash *ipv6_l3fwd_lookup_struct =
 274                 (struct rte_hash *)lookup_struct;
 275
 276         ipv6_hdr = (uint8_t *)ipv6_hdr + offsetof(struct ipv6_hdr, payload_len);
 277         void *data0 = ipv6_hdr;
 278         void *data1 = ((uint8_t *)ipv6_hdr) + sizeof(xmm_t);
 279         void *data2 = ((uint8_t *)ipv6_hdr) + sizeof(xmm_t) + sizeof(xmm_t);
 280
 281         /* Get part of 5 tuple: src IP address lower 96 bits and protocol */
 282         key.xmm[0] = em_mask_key(data0, mask1.x);
 283
 284         /*
 285          * Get part of 5 tuple: dst IP address lower 96 bits
 286          * and src IP address higher 32 bits.
 287          */
 288         key.xmm[1] = *(xmm_t *)data1;
 289
 290         /*
 291          * Get part of 5 tuple: dst port and src port
 292          * and dst IP address higher 32 bits.
 293          */
 294         key.xmm[2] = em_mask_key(data2, mask2.x);
 295
 296         /* Find destination port */
 297         ret = rte_hash_lookup(ipv6_l3fwd_lookup_struct, (const void *)&key);
 298         return (ret < 0) ? portid : ipv6_l3fwd_out_if[ret];
 299 }
 300
 301 #if defined RTE_ARCH_X86 || defined RTE_MACHINE_CPUFLAG_NEON
 302 #if defined(NO_HASH_MULTI_LOOKUP)
 303 #include "l3fwd_em_sequential.h"
 304 #else
 305 #include "l3fwd_em_hlm.h"
 306 #endif
 307 #else
 308 #include "l3fwd_em.h"
 309 #endif
 310
 311 static void
 312 convert_ipv4_5tuple(struct ipv4_5tuple *key1,
 313                 union ipv4_5tuple_host *key2)
 314 {
 315         key2->ip_dst = rte_cpu_to_be_32(key1->ip_dst);
 316         key2->ip_src = rte_cpu_to_be_32(key1->ip_src);
 317         key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
 318         key2->port_src = rte_cpu_to_be_16(key1->port_src);
 319         key2->proto = key1->proto;
 320         key2->pad0 = 0;
 321         key2->pad1 = 0;
 322 }
 323
 324 static void
 325 convert_ipv6_5tuple(struct ipv6_5tuple *key1,
 326                 union ipv6_5tuple_host *key2)
 327 {
 328         uint32_t i;
 329
 330         for (i = 0; i < 16; i++) {
 331                 key2->ip_dst[i] = key1->ip_dst[i];
 332                 key2->ip_src[i] = key1->ip_src[i];
 333         }
 334         key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
 335         key2->port_src = rte_cpu_to_be_16(key1->port_src);
 336         key2->proto = key1->proto;
 337         key2->pad0 = 0;
 338         key2->pad1 = 0;
 339         key2->reserve = 0;
 340 }
 341
 342 #define BYTE_VALUE_MAX 256
 343 #define ALL_32_BITS 0xffffffff
 344 #define BIT_8_TO_15 0x0000ff00
 345
 346 static inline void
 347 populate_ipv4_few_flow_into_table(const struct rte_hash *h)
 348 {
 349         uint32_t i;
 350         int32_t ret;
 351
 352         mask0 = (rte_xmm_t){.u32 = {BIT_8_TO_15, ALL_32_BITS,
 353                                 ALL_32_BITS, ALL_32_BITS} };
 354
 355         for (i = 0; i < IPV4_L3FWD_EM_NUM_ROUTES; i++) {
 356                 struct ipv4_l3fwd_em_route  entry;
 357                 union ipv4_5tuple_host newkey;
 358
 359                 entry = ipv4_l3fwd_em_route_array[i];
 360                 convert_ipv4_5tuple(&entry.key, &newkey);
 361                 ret = rte_hash_add_key(h, (void *) &newkey);
 362                 if (ret < 0) {
 363                         rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
 364                                 " to the l3fwd hash.\n", i);
 365                 }
 366                 ipv4_l3fwd_out_if[ret] = entry.if_out;
 367         }
 368         printf("Hash: Adding 0x%" PRIx64 " keys\n",
 369                 (uint64_t)IPV4_L3FWD_EM_NUM_ROUTES);
 370 }
 371
 372 #define BIT_16_TO_23 0x00ff0000
 373 static inline void
 374 populate_ipv6_few_flow_into_table(const struct rte_hash *h)
 375 {
 376         uint32_t i;
 377         int32_t ret;
 378
 379         mask1 = (rte_xmm_t){.u32 = {BIT_16_TO_23, ALL_32_BITS,
 380                                 ALL_32_BITS, ALL_32_BITS} };
 381
 382         mask2 = (rte_xmm_t){.u32 = {ALL_32_BITS, ALL_32_BITS, 0, 0} };
 383
 384         for (i = 0; i < IPV6_L3FWD_EM_NUM_ROUTES; i++) {
 385                 struct ipv6_l3fwd_em_route entry;
 386                 union ipv6_5tuple_host newkey;
 387
 388                 entry = ipv6_l3fwd_em_route_array[i];
 389                 convert_ipv6_5tuple(&entry.key, &newkey);
 390                 ret = rte_hash_add_key(h, (void *) &newkey);
 391                 if (ret < 0) {
 392                         rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
 393                                 " to the l3fwd hash.\n", i);
 394                 }
 395                 ipv6_l3fwd_out_if[ret] = entry.if_out;
 396         }
 397         printf("Hash: Adding 0x%" PRIx64 "keys\n",
 398                 (uint64_t)IPV6_L3FWD_EM_NUM_ROUTES);
 399 }
 400
 401 #define NUMBER_PORT_USED 4
 402 static inline void
 403 populate_ipv4_many_flow_into_table(const struct rte_hash *h,
 404                 unsigned int nr_flow)
 405 {
 406         unsigned i;
 407
 408         mask0 = (rte_xmm_t){.u32 = {BIT_8_TO_15, ALL_32_BITS,
 409                                 ALL_32_BITS, ALL_32_BITS} };
 410
 411         for (i = 0; i < nr_flow; i++) {
 412                 struct ipv4_l3fwd_em_route entry;
 413                 union ipv4_5tuple_host newkey;
 414
 415                 uint8_t a = (uint8_t)
 416                         ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
 417                 uint8_t b = (uint8_t)
 418                         (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
 419                 uint8_t c = (uint8_t)
 420                         ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
 421
 422                 /* Create the ipv4 exact match flow */
 423                 memset(&entry, 0, sizeof(entry));
 424                 switch (i & (NUMBER_PORT_USED - 1)) {
 425                 case 0:
 426                         entry = ipv4_l3fwd_em_route_array[0];
 427                         entry.key.ip_dst = IPv4(101, c, b, a);
 428                         break;
 429                 case 1:
 430                         entry = ipv4_l3fwd_em_route_array[1];
 431                         entry.key.ip_dst = IPv4(201, c, b, a);
 432                         break;
 433                 case 2:
 434                         entry = ipv4_l3fwd_em_route_array[2];
 435                         entry.key.ip_dst = IPv4(111, c, b, a);
 436                         break;
 437                 case 3:
 438                         entry = ipv4_l3fwd_em_route_array[3];
 439                         entry.key.ip_dst = IPv4(211, c, b, a);
 440                         break;
 441                 };
 442                 convert_ipv4_5tuple(&entry.key, &newkey);
 443                 int32_t ret = rte_hash_add_key(h, (void *) &newkey);
 444
 445                 if (ret < 0)
 446                         rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
 447
 448                 ipv4_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
 449
 450         }
 451         printf("Hash: Adding 0x%x keys\n", nr_flow);
 452 }
 453
 454 static inline void
 455 populate_ipv6_many_flow_into_table(const struct rte_hash *h,
 456                 unsigned int nr_flow)
 457 {
 458         unsigned i;
 459
 460         mask1 = (rte_xmm_t){.u32 = {BIT_16_TO_23, ALL_32_BITS,
 461                                 ALL_32_BITS, ALL_32_BITS} };
 462         mask2 = (rte_xmm_t){.u32 = {ALL_32_BITS, ALL_32_BITS, 0, 0} };
 463
 464         for (i = 0; i < nr_flow; i++) {
 465                 struct ipv6_l3fwd_em_route entry;
 466                 union ipv6_5tuple_host newkey;
 467
 468                 uint8_t a = (uint8_t)
 469                         ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
 470                 uint8_t b = (uint8_t)
 471                         (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
 472                 uint8_t c = (uint8_t)
 473                         ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
 474
 475                 /* Create the ipv6 exact match flow */
 476                 memset(&entry, 0, sizeof(entry));
 477                 switch (i & (NUMBER_PORT_USED - 1)) {
 478                 case 0:
 479                         entry = ipv6_l3fwd_em_route_array[0];
 480                         break;
 481                 case 1:
 482                         entry = ipv6_l3fwd_em_route_array[1];
 483                         break;
 484                 case 2:
 485                         entry = ipv6_l3fwd_em_route_array[2];
 486                         break;
 487                 case 3:
 488                         entry = ipv6_l3fwd_em_route_array[3];
 489                         break;
 490                 };
 491                 entry.key.ip_dst[13] = c;
 492                 entry.key.ip_dst[14] = b;
 493                 entry.key.ip_dst[15] = a;
 494                 convert_ipv6_5tuple(&entry.key, &newkey);
 495                 int32_t ret = rte_hash_add_key(h, (void *) &newkey);
 496
 497                 if (ret < 0)
 498                         rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
 499
 500                 ipv6_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
 501
 502         }
 503         printf("Hash: Adding 0x%x keys\n", nr_flow);
 504 }
 505
 506 /* Requirements:
 507  * 1. IP packets without extension;
 508  * 2. L4 payload should be either TCP or UDP.
 509  */
 510 int
 511 em_check_ptype(int portid)
 512 {
 513         int i, ret;
 514         int ptype_l3_ipv4_ext = 0;
 515         int ptype_l3_ipv6_ext = 0;
 516         int ptype_l4_tcp = 0;
 517         int ptype_l4_udp = 0;
 518         uint32_t ptype_mask = RTE_PTYPE_L3_MASK | RTE_PTYPE_L4_MASK;
 519
 520         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
 521         if (ret <= 0)
 522                 return 0;
 523
 524         uint32_t ptypes[ret];
 525
 526         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
 527         for (i = 0; i < ret; ++i) {
 528                 switch (ptypes[i]) {
 529                 case RTE_PTYPE_L3_IPV4_EXT:
 530                         ptype_l3_ipv4_ext = 1;
 531                         break;
 532                 case RTE_PTYPE_L3_IPV6_EXT:
 533                         ptype_l3_ipv6_ext = 1;
 534                         break;
 535                 case RTE_PTYPE_L4_TCP:
 536                         ptype_l4_tcp = 1;
 537                         break;
 538                 case RTE_PTYPE_L4_UDP:
 539                         ptype_l4_udp = 1;
 540                         break;
 541                 }
 542         }
 543
 544         if (ptype_l3_ipv4_ext == 0)
 545                 printf("port %d cannot parse RTE_PTYPE_L3_IPV4_EXT\n", portid);
 546         if (ptype_l3_ipv6_ext == 0)
 547                 printf("port %d cannot parse RTE_PTYPE_L3_IPV6_EXT\n", portid);
 548         if (!ptype_l3_ipv4_ext || !ptype_l3_ipv6_ext)
 549                 return 0;
 550
 551         if (ptype_l4_tcp == 0)
 552                 printf("port %d cannot parse RTE_PTYPE_L4_TCP\n", portid);
 553         if (ptype_l4_udp == 0)
 554                 printf("port %d cannot parse RTE_PTYPE_L4_UDP\n", portid);
 555         if (ptype_l4_tcp && ptype_l4_udp)
 556                 return 1;
 557
 558         return 0;
 559 }
 560
 561 static inline void
 562 em_parse_ptype(struct rte_mbuf *m)
 563 {
 564         struct rte_ether_hdr *eth_hdr;
 565         uint32_t packet_type = RTE_PTYPE_UNKNOWN;
 566         uint16_t ether_type;
 567         void *l3;
 568         int hdr_len;
 569         struct ipv4_hdr *ipv4_hdr;
 570         struct ipv6_hdr *ipv6_hdr;
 571
 572         eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 573         ether_type = eth_hdr->ether_type;
 574         l3 = (uint8_t *)eth_hdr + sizeof(struct rte_ether_hdr);
 575         if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4)) {
 576                 ipv4_hdr = (struct ipv4_hdr *)l3;
 577                 hdr_len = (ipv4_hdr->version_ihl & IPV4_HDR_IHL_MASK) *
 578                           IPV4_IHL_MULTIPLIER;
 579                 if (hdr_len == sizeof(struct ipv4_hdr)) {
 580                         packet_type |= RTE_PTYPE_L3_IPV4;
 581                         if (ipv4_hdr->next_proto_id == IPPROTO_TCP)
 582                                 packet_type |= RTE_PTYPE_L4_TCP;
 583                         else if (ipv4_hdr->next_proto_id == IPPROTO_UDP)
 584                                 packet_type |= RTE_PTYPE_L4_UDP;
 585                 } else
 586                         packet_type |= RTE_PTYPE_L3_IPV4_EXT;
 587         } else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6)) {
 588                 ipv6_hdr = (struct ipv6_hdr *)l3;
 589                 if (ipv6_hdr->proto == IPPROTO_TCP)
 590                         packet_type |= RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP;
 591                 else if (ipv6_hdr->proto == IPPROTO_UDP)
 592                         packet_type |= RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP;
 593                 else
 594                         packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 595         }
 596
 597         m->packet_type = packet_type;
 598 }
 599
 600 uint16_t
 601 em_cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
 602                   struct rte_mbuf *pkts[], uint16_t nb_pkts,
 603                   uint16_t max_pkts __rte_unused,
 604                   void *user_param __rte_unused)
 605 {
 606         unsigned i;
 607
 608         for (i = 0; i < nb_pkts; ++i)
 609                 em_parse_ptype(pkts[i]);
 610
 611         return nb_pkts;
 612 }
 613
 614 /* main processing loop */
 615 int
 616 em_main_loop(__attribute__((unused)) void *dummy)
 617 {
 618         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 619         unsigned lcore_id;
 620         uint64_t prev_tsc, diff_tsc, cur_tsc;
 621         int i, nb_rx;
 622         uint8_t queueid;
 623         uint16_t portid;
 624         struct lcore_conf *qconf;
 625         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
 626                 US_PER_S * BURST_TX_DRAIN_US;
 627
 628         prev_tsc = 0;
 629
 630         lcore_id = rte_lcore_id();
 631         qconf = &lcore_conf[lcore_id];
 632
 633         if (qconf->n_rx_queue == 0) {
 634                 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
 635                 return 0;
 636         }
 637
 638         RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
 639
 640         for (i = 0; i < qconf->n_rx_queue; i++) {
 641
 642                 portid = qconf->rx_queue_list[i].port_id;
 643                 queueid = qconf->rx_queue_list[i].queue_id;
 644                 RTE_LOG(INFO, L3FWD,
 645                         " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
 646                         lcore_id, portid, queueid);
 647         }
 648
 649         while (!force_quit) {
 650
 651                 cur_tsc = rte_rdtsc();
 652
 653                 /*
 654                  * TX burst queue drain
 655                  */
 656                 diff_tsc = cur_tsc - prev_tsc;
 657                 if (unlikely(diff_tsc > drain_tsc)) {
 658
 659                         for (i = 0; i < qconf->n_tx_port; ++i) {
 660                                 portid = qconf->tx_port_id[i];
 661                                 if (qconf->tx_mbufs[portid].len == 0)
 662                                         continue;
 663                                 send_burst(qconf,
 664                                         qconf->tx_mbufs[portid].len,
 665                                         portid);
 666                                 qconf->tx_mbufs[portid].len = 0;
 667                         }
 668
 669                         prev_tsc = cur_tsc;
 670                 }
 671
 672                 /*
 673                  * Read packet from RX queues
 674                  */
 675                 for (i = 0; i < qconf->n_rx_queue; ++i) {
 676                         portid = qconf->rx_queue_list[i].port_id;
 677                         queueid = qconf->rx_queue_list[i].queue_id;
 678                         nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
 679                                 MAX_PKT_BURST);
 680                         if (nb_rx == 0)
 681                                 continue;
 682
 683 #if defined RTE_ARCH_X86 || defined RTE_MACHINE_CPUFLAG_NEON
 684                         l3fwd_em_send_packets(nb_rx, pkts_burst,
 685                                                         portid, qconf);
 686 #else
 687                         l3fwd_em_no_opt_send_packets(nb_rx, pkts_burst,
 688                                                         portid, qconf);
 689 #endif
 690                 }
 691         }
 692
 693         return 0;
 694 }
 695
 696 /*
 697  * Initialize exact match (hash) parameters.
 698  */
 699 void
 700 setup_hash(const int socketid)
 701 {
 702         struct rte_hash_parameters ipv4_l3fwd_hash_params = {
 703                 .name = NULL,
 704                 .entries = L3FWD_HASH_ENTRIES,
 705                 .key_len = sizeof(union ipv4_5tuple_host),
 706                 .hash_func = ipv4_hash_crc,
 707                 .hash_func_init_val = 0,
 708         };
 709
 710         struct rte_hash_parameters ipv6_l3fwd_hash_params = {
 711                 .name = NULL,
 712                 .entries = L3FWD_HASH_ENTRIES,
 713                 .key_len = sizeof(union ipv6_5tuple_host),
 714                 .hash_func = ipv6_hash_crc,
 715                 .hash_func_init_val = 0,
 716         };
 717
 718         char s[64];
 719
 720         /* create ipv4 hash */
 721         snprintf(s, sizeof(s), "ipv4_l3fwd_hash_%d", socketid);
 722         ipv4_l3fwd_hash_params.name = s;
 723         ipv4_l3fwd_hash_params.socket_id = socketid;
 724         ipv4_l3fwd_em_lookup_struct[socketid] =
 725                 rte_hash_create(&ipv4_l3fwd_hash_params);
 726         if (ipv4_l3fwd_em_lookup_struct[socketid] == NULL)
 727                 rte_exit(EXIT_FAILURE,
 728                         "Unable to create the l3fwd hash on socket %d\n",
 729                         socketid);
 730
 731         /* create ipv6 hash */
 732         snprintf(s, sizeof(s), "ipv6_l3fwd_hash_%d", socketid);
 733         ipv6_l3fwd_hash_params.name = s;
 734         ipv6_l3fwd_hash_params.socket_id = socketid;
 735         ipv6_l3fwd_em_lookup_struct[socketid] =
 736                 rte_hash_create(&ipv6_l3fwd_hash_params);
 737         if (ipv6_l3fwd_em_lookup_struct[socketid] == NULL)
 738                 rte_exit(EXIT_FAILURE,
 739                         "Unable to create the l3fwd hash on socket %d\n",
 740                         socketid);
 741
 742         if (hash_entry_number != HASH_ENTRY_NUMBER_DEFAULT) {
 743                 /* For testing hash matching with a large number of flows we
 744                  * generate millions of IP 5-tuples with an incremented dst
 745                  * address to initialize the hash table. */
 746                 if (ipv6 == 0) {
 747                         /* populate the ipv4 hash */
 748                         populate_ipv4_many_flow_into_table(
 749                                 ipv4_l3fwd_em_lookup_struct[socketid],
 750                                 hash_entry_number);
 751                 } else {
 752                         /* populate the ipv6 hash */
 753                         populate_ipv6_many_flow_into_table(
 754                                 ipv6_l3fwd_em_lookup_struct[socketid],
 755                                 hash_entry_number);
 756                 }
 757         } else {
 758                 /*
 759                  * Use data in ipv4/ipv6 l3fwd lookup table
 760                  * directly to initialize the hash table.
 761                  */
 762                 if (ipv6 == 0) {
 763                         /* populate the ipv4 hash */
 764                         populate_ipv4_few_flow_into_table(
 765                                 ipv4_l3fwd_em_lookup_struct[socketid]);
 766                 } else {
 767                         /* populate the ipv6 hash */
 768                         populate_ipv6_few_flow_into_table(
 769                                 ipv6_l3fwd_em_lookup_struct[socketid]);
 770                 }
 771         }
 772 }
 773
 774 /* Return ipv4/ipv6 em fwd lookup struct. */
 775 void *
 776 em_get_ipv4_l3fwd_lookup_struct(const int socketid)
 777 {
 778         return ipv4_l3fwd_em_lookup_struct[socketid];
 779 }
 780
 781 void *
 782 em_get_ipv6_l3fwd_lookup_struct(const int socketid)
 783 {
 784         return ipv6_l3fwd_em_lookup_struct[socketid];
 785 }