drivers/common/cnxk/cnxk_security.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2021 Marvell.
   3  */
   4
   5 #include <rte_udp.h>
   6
   7 #include "cnxk_security.h"
   8
   9 #include "roc_api.h"
  10
  11 static void
  12 ipsec_hmac_opad_ipad_gen(struct rte_crypto_sym_xform *auth_xform,
  13                          uint8_t *hmac_opad_ipad)
  14 {
  15         const uint8_t *key = auth_xform->auth.key.data;
  16         uint32_t length = auth_xform->auth.key.length;
  17         uint8_t opad[128] = {[0 ... 127] = 0x5c};
  18         uint8_t ipad[128] = {[0 ... 127] = 0x36};
  19         uint32_t i;
  20
  21         /* HMAC OPAD and IPAD */
  22         for (i = 0; i < 127 && i < length; i++) {
  23                 opad[i] = opad[i] ^ key[i];
  24                 ipad[i] = ipad[i] ^ key[i];
  25         }
  26
  27         /* Precompute hash of HMAC OPAD and IPAD to avoid
  28          * per packet computation
  29          */
  30         switch (auth_xform->auth.algo) {
  31         case RTE_CRYPTO_AUTH_SHA1_HMAC:
  32                 roc_hash_sha1_gen(opad, (uint32_t *)&hmac_opad_ipad[0]);
  33                 roc_hash_sha1_gen(ipad, (uint32_t *)&hmac_opad_ipad[24]);
  34                 break;
  35         case RTE_CRYPTO_AUTH_SHA256_HMAC:
  36                 roc_hash_sha256_gen(opad, (uint32_t *)&hmac_opad_ipad[0]);
  37                 roc_hash_sha256_gen(ipad, (uint32_t *)&hmac_opad_ipad[64]);
  38                 break;
  39         case RTE_CRYPTO_AUTH_SHA384_HMAC:
  40                 roc_hash_sha512_gen(opad, (uint64_t *)&hmac_opad_ipad[0], 384);
  41                 roc_hash_sha512_gen(ipad, (uint64_t *)&hmac_opad_ipad[64], 384);
  42                 break;
  43         case RTE_CRYPTO_AUTH_SHA512_HMAC:
  44                 roc_hash_sha512_gen(opad, (uint64_t *)&hmac_opad_ipad[0], 512);
  45                 roc_hash_sha512_gen(ipad, (uint64_t *)&hmac_opad_ipad[64], 512);
  46                 break;
  47         default:
  48                 break;
  49         }
  50 }
  51
  52 static int
  53 ot_ipsec_sa_common_param_fill(union roc_ot_ipsec_sa_word2 *w2,
  54                               uint8_t *cipher_key, uint8_t *salt_key,
  55                               uint8_t *hmac_opad_ipad,
  56                               struct rte_security_ipsec_xform *ipsec_xfrm,
  57                               struct rte_crypto_sym_xform *crypto_xfrm)
  58 {
  59         struct rte_crypto_sym_xform *auth_xfrm, *cipher_xfrm;
  60         const uint8_t *key;
  61         uint32_t *tmp_salt;
  62         uint64_t *tmp_key;
  63         int length, i;
  64
  65         /* Set direction */
  66         switch (ipsec_xfrm->direction) {
  67         case RTE_SECURITY_IPSEC_SA_DIR_INGRESS:
  68                 w2->s.dir = ROC_IE_SA_DIR_INBOUND;
  69                 auth_xfrm = crypto_xfrm;
  70                 cipher_xfrm = crypto_xfrm->next;
  71                 break;
  72         case RTE_SECURITY_IPSEC_SA_DIR_EGRESS:
  73                 w2->s.dir = ROC_IE_SA_DIR_OUTBOUND;
  74                 cipher_xfrm = crypto_xfrm;
  75                 auth_xfrm = crypto_xfrm->next;
  76                 break;
  77         default:
  78                 return -EINVAL;
  79         }
  80
  81         /* Set protocol - ESP vs AH */
  82         switch (ipsec_xfrm->proto) {
  83         case RTE_SECURITY_IPSEC_SA_PROTO_ESP:
  84                 w2->s.protocol = ROC_IE_SA_PROTOCOL_ESP;
  85                 break;
  86         case RTE_SECURITY_IPSEC_SA_PROTO_AH:
  87                 w2->s.protocol = ROC_IE_SA_PROTOCOL_AH;
  88                 break;
  89         default:
  90                 return -EINVAL;
  91         }
  92
  93         /* Set mode - transport vs tunnel */
  94         switch (ipsec_xfrm->mode) {
  95         case RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT:
  96                 w2->s.mode = ROC_IE_SA_MODE_TRANSPORT;
  97                 break;
  98         case RTE_SECURITY_IPSEC_SA_MODE_TUNNEL:
  99                 w2->s.mode = ROC_IE_SA_MODE_TUNNEL;
 100                 break;
 101         default:
 102                 return -EINVAL;
 103         }
 104
 105         /* Set encryption algorithm */
 106         if (crypto_xfrm->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
 107                 key = crypto_xfrm->aead.key.data;
 108                 length = crypto_xfrm->aead.key.length;
 109
 110                 switch (crypto_xfrm->aead.algo) {
 111                 case RTE_CRYPTO_AEAD_AES_GCM:
 112                         w2->s.enc_type = ROC_IE_OT_SA_ENC_AES_GCM;
 113                         w2->s.auth_type = ROC_IE_OT_SA_AUTH_NULL;
 114                         memcpy(salt_key, &ipsec_xfrm->salt, 4);
 115                         tmp_salt = (uint32_t *)salt_key;
 116                         *tmp_salt = rte_be_to_cpu_32(*tmp_salt);
 117                         break;
 118                 default:
 119                         return -ENOTSUP;
 120                 }
 121         } else {
 122                 switch (cipher_xfrm->cipher.algo) {
 123                 case RTE_CRYPTO_CIPHER_NULL:
 124                         w2->s.enc_type = ROC_IE_OT_SA_ENC_NULL;
 125                         break;
 126                 case RTE_CRYPTO_CIPHER_AES_CBC:
 127                         w2->s.enc_type = ROC_IE_OT_SA_ENC_AES_CBC;
 128                         break;
 129                 case RTE_CRYPTO_CIPHER_AES_CTR:
 130                         w2->s.enc_type = ROC_IE_OT_SA_ENC_AES_CTR;
 131                         break;
 132                 default:
 133                         return -ENOTSUP;
 134                 }
 135
 136                 switch (auth_xfrm->auth.algo) {
 137                 case RTE_CRYPTO_AUTH_NULL:
 138                         w2->s.auth_type = ROC_IE_OT_SA_AUTH_NULL;
 139                         break;
 140                 case RTE_CRYPTO_AUTH_SHA1_HMAC:
 141                         w2->s.auth_type = ROC_IE_OT_SA_AUTH_SHA1;
 142                         break;
 143                 case RTE_CRYPTO_AUTH_SHA256_HMAC:
 144                         w2->s.auth_type = ROC_IE_OT_SA_AUTH_SHA2_256;
 145                         break;
 146                 case RTE_CRYPTO_AUTH_SHA384_HMAC:
 147                         w2->s.auth_type = ROC_IE_OT_SA_AUTH_SHA2_384;
 148                         break;
 149                 case RTE_CRYPTO_AUTH_SHA512_HMAC:
 150                         w2->s.auth_type = ROC_IE_OT_SA_AUTH_SHA2_512;
 151                         break;
 152                 case RTE_CRYPTO_AUTH_AES_XCBC_MAC:
 153                         w2->s.auth_type = ROC_IE_OT_SA_AUTH_AES_XCBC_128;
 154                         break;
 155                 default:
 156                         return -ENOTSUP;
 157                 }
 158
 159                 if (auth_xfrm->auth.algo == RTE_CRYPTO_AUTH_AES_XCBC_MAC) {
 160                         const uint8_t *auth_key = auth_xfrm->auth.key.data;
 161                         roc_aes_xcbc_key_derive(auth_key, hmac_opad_ipad);
 162                 } else {
 163                         ipsec_hmac_opad_ipad_gen(auth_xfrm, hmac_opad_ipad);
 164                 }
 165
 166                 tmp_key = (uint64_t *)hmac_opad_ipad;
 167                 for (i = 0;
 168                      i < (int)(ROC_CTX_MAX_OPAD_IPAD_LEN / sizeof(uint64_t));
 169                      i++)
 170                         tmp_key[i] = rte_be_to_cpu_64(tmp_key[i]);
 171
 172                 key = cipher_xfrm->cipher.key.data;
 173                 length = cipher_xfrm->cipher.key.length;
 174         }
 175
 176         /* Set encapsulation type */
 177         if (ipsec_xfrm->options.udp_encap)
 178                 w2->s.encap_type = ROC_IE_OT_SA_ENCAP_UDP;
 179
 180         w2->s.spi = ipsec_xfrm->spi;
 181
 182         /* Copy encryption key */
 183         memcpy(cipher_key, key, length);
 184         tmp_key = (uint64_t *)cipher_key;
 185         for (i = 0; i < (int)(ROC_CTX_MAX_CKEY_LEN / sizeof(uint64_t)); i++)
 186                 tmp_key[i] = rte_be_to_cpu_64(tmp_key[i]);
 187
 188         /* Set AES key length */
 189         if (w2->s.enc_type == ROC_IE_OT_SA_ENC_AES_CBC ||
 190             w2->s.enc_type == ROC_IE_OT_SA_ENC_AES_CCM ||
 191             w2->s.enc_type == ROC_IE_OT_SA_ENC_AES_CTR ||
 192             w2->s.enc_type == ROC_IE_OT_SA_ENC_AES_GCM ||
 193             w2->s.auth_type == ROC_IE_OT_SA_AUTH_AES_GMAC) {
 194                 switch (length) {
 195                 case ROC_CPT_AES128_KEY_LEN:
 196                         w2->s.aes_key_len = ROC_IE_SA_AES_KEY_LEN_128;
 197                         break;
 198                 case ROC_CPT_AES192_KEY_LEN:
 199                         w2->s.aes_key_len = ROC_IE_SA_AES_KEY_LEN_192;
 200                         break;
 201                 case ROC_CPT_AES256_KEY_LEN:
 202                         w2->s.aes_key_len = ROC_IE_SA_AES_KEY_LEN_256;
 203                         break;
 204                 default:
 205                         plt_err("Invalid AES key length");
 206                         return -EINVAL;
 207                 }
 208         }
 209
 210         if (ipsec_xfrm->life.packets_soft_limit != 0 ||
 211             ipsec_xfrm->life.packets_hard_limit != 0) {
 212                 if (ipsec_xfrm->life.bytes_soft_limit != 0 ||
 213                     ipsec_xfrm->life.bytes_hard_limit != 0) {
 214                         plt_err("Expiry tracking with both packets & bytes is not supported");
 215                         return -EINVAL;
 216                 }
 217                 w2->s.life_unit = ROC_IE_OT_SA_LIFE_UNIT_PKTS;
 218         }
 219
 220         if (ipsec_xfrm->life.bytes_soft_limit != 0 ||
 221             ipsec_xfrm->life.bytes_hard_limit != 0) {
 222                 if (ipsec_xfrm->life.packets_soft_limit != 0 ||
 223                     ipsec_xfrm->life.packets_hard_limit != 0) {
 224                         plt_err("Expiry tracking with both packets & bytes is not supported");
 225                         return -EINVAL;
 226                 }
 227                 w2->s.life_unit = ROC_IE_OT_SA_LIFE_UNIT_OCTETS;
 228         }
 229
 230         return 0;
 231 }
 232
 233 static size_t
 234 ot_ipsec_inb_ctx_size(struct roc_ot_ipsec_inb_sa *sa)
 235 {
 236         size_t size;
 237
 238         /* Variable based on Anti-replay Window */
 239         size = offsetof(struct roc_ot_ipsec_inb_sa, ctx) +
 240                offsetof(struct roc_ot_ipsec_inb_ctx_update_reg, ar_winbits);
 241
 242         if (sa->w0.s.ar_win)
 243                 size += (1 << (sa->w0.s.ar_win - 1)) * sizeof(uint64_t);
 244
 245         return size;
 246 }
 247
 248 static int
 249 ot_ipsec_inb_tunnel_hdr_fill(struct roc_ot_ipsec_inb_sa *sa,
 250                              struct rte_security_ipsec_xform *ipsec_xfrm)
 251 {
 252         struct rte_security_ipsec_tunnel_param *tunnel;
 253
 254         if (ipsec_xfrm->mode != RTE_SECURITY_IPSEC_SA_MODE_TUNNEL)
 255                 return 0;
 256
 257         if (ipsec_xfrm->options.tunnel_hdr_verify == 0)
 258                 return 0;
 259
 260         tunnel = &ipsec_xfrm->tunnel;
 261
 262         switch (tunnel->type) {
 263         case RTE_SECURITY_IPSEC_TUNNEL_IPV4:
 264                 sa->w2.s.outer_ip_ver = ROC_IE_SA_IP_VERSION_4;
 265                 memcpy(&sa->outer_hdr.ipv4.src_addr, &tunnel->ipv4.src_ip,
 266                        sizeof(struct in_addr));
 267                 memcpy(&sa->outer_hdr.ipv4.dst_addr, &tunnel->ipv4.dst_ip,
 268                        sizeof(struct in_addr));
 269
 270                 /* IP Source and Dest are in LE/CPU endian */
 271                 sa->outer_hdr.ipv4.src_addr =
 272                         rte_be_to_cpu_32(sa->outer_hdr.ipv4.src_addr);
 273                 sa->outer_hdr.ipv4.dst_addr =
 274                         rte_be_to_cpu_32(sa->outer_hdr.ipv4.dst_addr);
 275
 276                 break;
 277         case RTE_SECURITY_IPSEC_TUNNEL_IPV6:
 278                 sa->w2.s.outer_ip_ver = ROC_IE_SA_IP_VERSION_6;
 279                 memcpy(&sa->outer_hdr.ipv6.src_addr, &tunnel->ipv6.src_addr,
 280                        sizeof(struct in6_addr));
 281                 memcpy(&sa->outer_hdr.ipv6.dst_addr, &tunnel->ipv6.dst_addr,
 282                        sizeof(struct in6_addr));
 283
 284                 break;
 285         default:
 286                 return -EINVAL;
 287         }
 288
 289         switch (ipsec_xfrm->options.tunnel_hdr_verify) {
 290         case RTE_SECURITY_IPSEC_TUNNEL_VERIFY_DST_ADDR:
 291                 sa->w2.s.ip_hdr_verify = ROC_IE_OT_SA_IP_HDR_VERIFY_DST_ADDR;
 292                 break;
 293         case RTE_SECURITY_IPSEC_TUNNEL_VERIFY_SRC_DST_ADDR:
 294                 sa->w2.s.ip_hdr_verify =
 295                         ROC_IE_OT_SA_IP_HDR_VERIFY_SRC_DST_ADDR;
 296                 break;
 297         default:
 298                 return -ENOTSUP;
 299         }
 300
 301         return 0;
 302 }
 303
 304 int
 305 cnxk_ot_ipsec_inb_sa_fill(struct roc_ot_ipsec_inb_sa *sa,
 306                           struct rte_security_ipsec_xform *ipsec_xfrm,
 307                           struct rte_crypto_sym_xform *crypto_xfrm,
 308                           bool is_inline)
 309 {
 310         union roc_ot_ipsec_sa_word2 w2;
 311         uint32_t replay_win_sz;
 312         size_t offset;
 313         int rc;
 314
 315         /* Initialize the SA */
 316         roc_ot_ipsec_inb_sa_init(sa, is_inline);
 317
 318         w2.u64 = 0;
 319         rc = ot_ipsec_sa_common_param_fill(&w2, sa->cipher_key, sa->w8.s.salt,
 320                                            sa->hmac_opad_ipad, ipsec_xfrm,
 321                                            crypto_xfrm);
 322         if (rc)
 323                 return rc;
 324
 325         /* Updata common word2 data */
 326         sa->w2.u64 = w2.u64;
 327
 328         /* Only support power-of-two window sizes supported */
 329         replay_win_sz = ipsec_xfrm->replay_win_sz;
 330         if (replay_win_sz) {
 331                 if (!rte_is_power_of_2(replay_win_sz) ||
 332                     replay_win_sz > ROC_AR_WIN_SIZE_MAX)
 333                         return -ENOTSUP;
 334
 335                 sa->w0.s.ar_win = rte_log2_u32(replay_win_sz) - 5;
 336         }
 337
 338         rc = ot_ipsec_inb_tunnel_hdr_fill(sa, ipsec_xfrm);
 339         if (rc)
 340                 return rc;
 341
 342         /* ESN */
 343         sa->w2.s.esn_en = !!ipsec_xfrm->options.esn;
 344         if (ipsec_xfrm->options.udp_encap) {
 345                 sa->w10.s.udp_src_port = 4500;
 346                 sa->w10.s.udp_dst_port = 4500;
 347         }
 348
 349         if (ipsec_xfrm->options.udp_ports_verify)
 350                 sa->w2.s.udp_ports_verify = 1;
 351
 352         offset = offsetof(struct roc_ot_ipsec_inb_sa, ctx);
 353         /* Word offset for HW managed SA field */
 354         sa->w0.s.hw_ctx_off = offset / 8;
 355         /* Context push size for inbound spans up to hw_ctx including
 356          * ar_base field, in 8b units
 357          */
 358         sa->w0.s.ctx_push_size = sa->w0.s.hw_ctx_off + 1;
 359         /* Entire context size in 128B units */
 360         sa->w0.s.ctx_size =
 361                 (PLT_ALIGN_CEIL(ot_ipsec_inb_ctx_size(sa), ROC_CTX_UNIT_128B) /
 362                  ROC_CTX_UNIT_128B) -
 363                 1;
 364
 365         /**
 366          * CPT MC triggers expiry when counter value changes from 2 to 1. To
 367          * mitigate this behaviour add 1 to the life counter values provided.
 368          */
 369
 370         if (ipsec_xfrm->life.bytes_soft_limit) {
 371                 sa->ctx.soft_life = ipsec_xfrm->life.bytes_soft_limit + 1;
 372                 sa->w0.s.soft_life_dec = 1;
 373         }
 374
 375         if (ipsec_xfrm->life.packets_soft_limit) {
 376                 sa->ctx.soft_life = ipsec_xfrm->life.packets_soft_limit + 1;
 377                 sa->w0.s.soft_life_dec = 1;
 378         }
 379
 380         if (ipsec_xfrm->life.bytes_hard_limit) {
 381                 sa->ctx.hard_life = ipsec_xfrm->life.bytes_hard_limit + 1;
 382                 sa->w0.s.hard_life_dec = 1;
 383         }
 384
 385         if (ipsec_xfrm->life.packets_hard_limit) {
 386                 sa->ctx.hard_life = ipsec_xfrm->life.packets_hard_limit + 1;
 387                 sa->w0.s.hard_life_dec = 1;
 388         }
 389
 390         rte_wmb();
 391
 392         /* Enable SA */
 393         sa->w2.s.valid = 1;
 394         return 0;
 395 }
 396
 397 int
 398 cnxk_ot_ipsec_outb_sa_fill(struct roc_ot_ipsec_outb_sa *sa,
 399                            struct rte_security_ipsec_xform *ipsec_xfrm,
 400                            struct rte_crypto_sym_xform *crypto_xfrm)
 401 {
 402         struct rte_security_ipsec_tunnel_param *tunnel = &ipsec_xfrm->tunnel;
 403         union roc_ot_ipsec_sa_word2 w2;
 404         size_t offset;
 405         int rc;
 406
 407         /* Initialize the SA */
 408         roc_ot_ipsec_outb_sa_init(sa);
 409
 410         w2.u64 = 0;
 411         rc = ot_ipsec_sa_common_param_fill(&w2, sa->cipher_key, sa->iv.s.salt,
 412                                            sa->hmac_opad_ipad, ipsec_xfrm,
 413                                            crypto_xfrm);
 414         if (rc)
 415                 return rc;
 416
 417         /* Update common word2 data */
 418         sa->w2.u64 = w2.u64;
 419
 420         if (ipsec_xfrm->mode != RTE_SECURITY_IPSEC_SA_MODE_TUNNEL)
 421                 goto skip_tunnel_info;
 422
 423         /* Tunnel header info */
 424         switch (tunnel->type) {
 425         case RTE_SECURITY_IPSEC_TUNNEL_IPV4:
 426                 sa->w2.s.outer_ip_ver = ROC_IE_SA_IP_VERSION_4;
 427                 memcpy(&sa->outer_hdr.ipv4.src_addr, &tunnel->ipv4.src_ip,
 428                        sizeof(struct in_addr));
 429                 memcpy(&sa->outer_hdr.ipv4.dst_addr, &tunnel->ipv4.dst_ip,
 430                        sizeof(struct in_addr));
 431
 432                 /* IP Source and Dest seems to be in LE/CPU endian */
 433                 sa->outer_hdr.ipv4.src_addr =
 434                         rte_be_to_cpu_32(sa->outer_hdr.ipv4.src_addr);
 435                 sa->outer_hdr.ipv4.dst_addr =
 436                         rte_be_to_cpu_32(sa->outer_hdr.ipv4.dst_addr);
 437
 438                 /* Outer header DF bit source */
 439                 if (!ipsec_xfrm->options.copy_df) {
 440                         sa->w2.s.ipv4_df_src_or_ipv6_flw_lbl_src =
 441                                 ROC_IE_OT_SA_COPY_FROM_SA;
 442                         sa->w10.s.ipv4_df_or_ipv6_flw_lbl = tunnel->ipv4.df;
 443                 } else {
 444                         sa->w2.s.ipv4_df_src_or_ipv6_flw_lbl_src =
 445                                 ROC_IE_OT_SA_COPY_FROM_INNER_IP_HDR;
 446                 }
 447
 448                 /* Outer header DSCP source */
 449                 if (!ipsec_xfrm->options.copy_dscp) {
 450                         sa->w2.s.dscp_src = ROC_IE_OT_SA_COPY_FROM_SA;
 451                         sa->w10.s.dscp = tunnel->ipv4.dscp;
 452                 } else {
 453                         sa->w2.s.dscp_src = ROC_IE_OT_SA_COPY_FROM_INNER_IP_HDR;
 454                 }
 455                 break;
 456         case RTE_SECURITY_IPSEC_TUNNEL_IPV6:
 457                 sa->w2.s.outer_ip_ver = ROC_IE_SA_IP_VERSION_6;
 458                 memcpy(&sa->outer_hdr.ipv6.src_addr, &tunnel->ipv6.src_addr,
 459                        sizeof(struct in6_addr));
 460                 memcpy(&sa->outer_hdr.ipv6.dst_addr, &tunnel->ipv6.dst_addr,
 461                        sizeof(struct in6_addr));
 462
 463                 /* Outer header flow label source */
 464                 if (!ipsec_xfrm->options.copy_flabel) {
 465                         sa->w2.s.ipv4_df_src_or_ipv6_flw_lbl_src =
 466                                 ROC_IE_OT_SA_COPY_FROM_SA;
 467
 468                         sa->w10.s.ipv4_df_or_ipv6_flw_lbl = tunnel->ipv6.flabel;
 469                 } else {
 470                         sa->w2.s.ipv4_df_src_or_ipv6_flw_lbl_src =
 471                                 ROC_IE_OT_SA_COPY_FROM_INNER_IP_HDR;
 472                 }
 473
 474                 /* Outer header DSCP source */
 475                 if (!ipsec_xfrm->options.copy_dscp) {
 476                         sa->w2.s.dscp_src = ROC_IE_OT_SA_COPY_FROM_SA;
 477                         sa->w10.s.dscp = tunnel->ipv6.dscp;
 478                 } else {
 479                         sa->w2.s.dscp_src = ROC_IE_OT_SA_COPY_FROM_INNER_IP_HDR;
 480                 }
 481                 break;
 482         default:
 483                 return -EINVAL;
 484         }
 485
 486 skip_tunnel_info:
 487         /* ESN */
 488         sa->w0.s.esn_en = !!ipsec_xfrm->options.esn;
 489
 490         if (ipsec_xfrm->esn.value)
 491                 sa->ctx.esn_val = ipsec_xfrm->esn.value - 1;
 492
 493         if (ipsec_xfrm->options.udp_encap) {
 494                 sa->w10.s.udp_src_port = 4500;
 495                 sa->w10.s.udp_dst_port = 4500;
 496         }
 497
 498         offset = offsetof(struct roc_ot_ipsec_outb_sa, ctx);
 499         /* Word offset for HW managed SA field */
 500         sa->w0.s.hw_ctx_off = offset / 8;
 501
 502         /* Context push size is up to err ctl in HW ctx */
 503         sa->w0.s.ctx_push_size = sa->w0.s.hw_ctx_off + 1;
 504
 505         /* Entire context size in 128B units */
 506         offset = sizeof(struct roc_ot_ipsec_outb_sa);
 507         sa->w0.s.ctx_size = (PLT_ALIGN_CEIL(offset, ROC_CTX_UNIT_128B) /
 508                              ROC_CTX_UNIT_128B) -
 509                             1;
 510
 511         /* IPID gen */
 512         sa->w2.s.ipid_gen = 1;
 513
 514         /**
 515          * CPT MC triggers expiry when counter value changes from 2 to 1. To
 516          * mitigate this behaviour add 1 to the life counter values provided.
 517          */
 518
 519         if (ipsec_xfrm->life.bytes_soft_limit) {
 520                 sa->ctx.soft_life = ipsec_xfrm->life.bytes_soft_limit + 1;
 521                 sa->w0.s.soft_life_dec = 1;
 522         }
 523
 524         if (ipsec_xfrm->life.packets_soft_limit) {
 525                 sa->ctx.soft_life = ipsec_xfrm->life.packets_soft_limit + 1;
 526                 sa->w0.s.soft_life_dec = 1;
 527         }
 528
 529         if (ipsec_xfrm->life.bytes_hard_limit) {
 530                 sa->ctx.hard_life = ipsec_xfrm->life.bytes_hard_limit + 1;
 531                 sa->w0.s.hard_life_dec = 1;
 532         }
 533
 534         if (ipsec_xfrm->life.packets_hard_limit) {
 535                 sa->ctx.hard_life = ipsec_xfrm->life.packets_hard_limit + 1;
 536                 sa->w0.s.hard_life_dec = 1;
 537         }
 538
 539         /* There are two words of CPT_CTX_HW_S for ucode to skip */
 540         sa->w0.s.ctx_hdr_size = 1;
 541         sa->w0.s.aop_valid = 1;
 542
 543         rte_wmb();
 544
 545         /* Enable SA */
 546         sa->w2.s.valid = 1;
 547         return 0;
 548 }
 549
 550 bool
 551 cnxk_ot_ipsec_inb_sa_valid(struct roc_ot_ipsec_inb_sa *sa)
 552 {
 553         return !!sa->w2.s.valid;
 554 }
 555
 556 bool
 557 cnxk_ot_ipsec_outb_sa_valid(struct roc_ot_ipsec_outb_sa *sa)
 558 {
 559         return !!sa->w2.s.valid;
 560 }
 561
 562 static inline int
 563 ipsec_xfrm_verify(struct rte_security_ipsec_xform *ipsec_xfrm,
 564                   struct rte_crypto_sym_xform *crypto_xfrm)
 565 {
 566         if (crypto_xfrm->next == NULL)
 567                 return -EINVAL;
 568
 569         if (ipsec_xfrm->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS) {
 570                 if (crypto_xfrm->type != RTE_CRYPTO_SYM_XFORM_AUTH ||
 571                     crypto_xfrm->next->type != RTE_CRYPTO_SYM_XFORM_CIPHER)
 572                         return -EINVAL;
 573         } else {
 574                 if (crypto_xfrm->type != RTE_CRYPTO_SYM_XFORM_CIPHER ||
 575                     crypto_xfrm->next->type != RTE_CRYPTO_SYM_XFORM_AUTH)
 576                         return -EINVAL;
 577         }
 578
 579         return 0;
 580 }
 581
 582 static int
 583 onf_ipsec_sa_common_param_fill(struct roc_ie_onf_sa_ctl *ctl, uint8_t *salt,
 584                                uint8_t *cipher_key, uint8_t *hmac_opad_ipad,
 585                                struct rte_security_ipsec_xform *ipsec_xfrm,
 586                                struct rte_crypto_sym_xform *crypto_xfrm)
 587 {
 588         struct rte_crypto_sym_xform *auth_xfrm, *cipher_xfrm;
 589         int rc, length, auth_key_len;
 590         const uint8_t *key = NULL;
 591
 592         /* Set direction */
 593         switch (ipsec_xfrm->direction) {
 594         case RTE_SECURITY_IPSEC_SA_DIR_INGRESS:
 595                 ctl->direction = ROC_IE_SA_DIR_INBOUND;
 596                 auth_xfrm = crypto_xfrm;
 597                 cipher_xfrm = crypto_xfrm->next;
 598                 break;
 599         case RTE_SECURITY_IPSEC_SA_DIR_EGRESS:
 600                 ctl->direction = ROC_IE_SA_DIR_OUTBOUND;
 601                 cipher_xfrm = crypto_xfrm;
 602                 auth_xfrm = crypto_xfrm->next;
 603                 break;
 604         default:
 605                 return -EINVAL;
 606         }
 607
 608         /* Set protocol - ESP vs AH */
 609         switch (ipsec_xfrm->proto) {
 610         case RTE_SECURITY_IPSEC_SA_PROTO_ESP:
 611                 ctl->ipsec_proto = ROC_IE_SA_PROTOCOL_ESP;
 612                 break;
 613         case RTE_SECURITY_IPSEC_SA_PROTO_AH:
 614                 return -ENOTSUP;
 615         default:
 616                 return -EINVAL;
 617         }
 618
 619         /* Set mode - transport vs tunnel */
 620         switch (ipsec_xfrm->mode) {
 621         case RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT:
 622                 ctl->ipsec_mode = ROC_IE_SA_MODE_TRANSPORT;
 623                 break;
 624         case RTE_SECURITY_IPSEC_SA_MODE_TUNNEL:
 625                 ctl->ipsec_mode = ROC_IE_SA_MODE_TUNNEL;
 626                 break;
 627         default:
 628                 return -EINVAL;
 629         }
 630
 631         /* Set encryption algorithm */
 632         if (crypto_xfrm->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
 633                 length = crypto_xfrm->aead.key.length;
 634
 635                 switch (crypto_xfrm->aead.algo) {
 636                 case RTE_CRYPTO_AEAD_AES_GCM:
 637                         ctl->enc_type = ROC_IE_ON_SA_ENC_AES_GCM;
 638                         ctl->auth_type = ROC_IE_ON_SA_AUTH_NULL;
 639                         memcpy(salt, &ipsec_xfrm->salt, 4);
 640                         key = crypto_xfrm->aead.key.data;
 641                         break;
 642                 default:
 643                         return -ENOTSUP;
 644                 }
 645
 646         } else {
 647                 rc = ipsec_xfrm_verify(ipsec_xfrm, crypto_xfrm);
 648                 if (rc)
 649                         return rc;
 650
 651                 switch (cipher_xfrm->cipher.algo) {
 652                 case RTE_CRYPTO_CIPHER_AES_CBC:
 653                         ctl->enc_type = ROC_IE_ON_SA_ENC_AES_CBC;
 654                         break;
 655                 case RTE_CRYPTO_CIPHER_AES_CTR:
 656                         ctl->enc_type = ROC_IE_ON_SA_ENC_AES_CTR;
 657                         break;
 658                 default:
 659                         return -ENOTSUP;
 660                 }
 661
 662                 switch (auth_xfrm->auth.algo) {
 663                 case RTE_CRYPTO_AUTH_SHA1_HMAC:
 664                         ctl->auth_type = ROC_IE_ON_SA_AUTH_SHA1;
 665                         break;
 666                 default:
 667                         return -ENOTSUP;
 668                 }
 669                 auth_key_len = auth_xfrm->auth.key.length;
 670                 if (auth_key_len < 20 || auth_key_len > 64)
 671                         return -ENOTSUP;
 672
 673                 key = cipher_xfrm->cipher.key.data;
 674                 length = cipher_xfrm->cipher.key.length;
 675
 676                 ipsec_hmac_opad_ipad_gen(auth_xfrm, hmac_opad_ipad);
 677         }
 678
 679         switch (length) {
 680         case ROC_CPT_AES128_KEY_LEN:
 681                 ctl->aes_key_len = ROC_IE_SA_AES_KEY_LEN_128;
 682                 break;
 683         case ROC_CPT_AES192_KEY_LEN:
 684                 ctl->aes_key_len = ROC_IE_SA_AES_KEY_LEN_192;
 685                 break;
 686         case ROC_CPT_AES256_KEY_LEN:
 687                 ctl->aes_key_len = ROC_IE_SA_AES_KEY_LEN_256;
 688                 break;
 689         default:
 690                 return -EINVAL;
 691         }
 692
 693         memcpy(cipher_key, key, length);
 694
 695         if (ipsec_xfrm->options.esn)
 696                 ctl->esn_en = 1;
 697
 698         ctl->spi = rte_cpu_to_be_32(ipsec_xfrm->spi);
 699         return 0;
 700 }
 701
 702 int
 703 cnxk_onf_ipsec_inb_sa_fill(struct roc_onf_ipsec_inb_sa *sa,
 704                            struct rte_security_ipsec_xform *ipsec_xfrm,
 705                            struct rte_crypto_sym_xform *crypto_xfrm)
 706 {
 707         struct roc_ie_onf_sa_ctl *ctl = &sa->ctl;
 708         int rc;
 709
 710         rc = onf_ipsec_sa_common_param_fill(ctl, sa->nonce, sa->cipher_key,
 711                                             sa->hmac_key, ipsec_xfrm,
 712                                             crypto_xfrm);
 713         if (rc)
 714                 return rc;
 715
 716         rte_wmb();
 717
 718         /* Enable SA */
 719         ctl->valid = 1;
 720         return 0;
 721 }
 722
 723 int
 724 cnxk_onf_ipsec_outb_sa_fill(struct roc_onf_ipsec_outb_sa *sa,
 725                             struct rte_security_ipsec_xform *ipsec_xfrm,
 726                             struct rte_crypto_sym_xform *crypto_xfrm)
 727 {
 728         struct rte_security_ipsec_tunnel_param *tunnel = &ipsec_xfrm->tunnel;
 729         struct roc_ie_onf_sa_ctl *ctl = &sa->ctl;
 730         int rc;
 731
 732         /* Fill common params */
 733         rc = onf_ipsec_sa_common_param_fill(ctl, sa->nonce, sa->cipher_key,
 734                                             sa->hmac_key, ipsec_xfrm,
 735                                             crypto_xfrm);
 736         if (rc)
 737                 return rc;
 738
 739         if (ipsec_xfrm->mode != RTE_SECURITY_IPSEC_SA_MODE_TUNNEL)
 740                 goto skip_tunnel_info;
 741
 742         /* Tunnel header info */
 743         switch (tunnel->type) {
 744         case RTE_SECURITY_IPSEC_TUNNEL_IPV4:
 745                 memcpy(&sa->ip_src, &tunnel->ipv4.src_ip,
 746                        sizeof(struct in_addr));
 747                 memcpy(&sa->ip_dst, &tunnel->ipv4.dst_ip,
 748                        sizeof(struct in_addr));
 749                 break;
 750         case RTE_SECURITY_IPSEC_TUNNEL_IPV6:
 751                 return -ENOTSUP;
 752         default:
 753                 return -EINVAL;
 754         }
 755
 756         /* Update udp encap ports */
 757         if (ipsec_xfrm->options.udp_encap == 1) {
 758                 sa->udp_src = 4500;
 759                 sa->udp_dst = 4500;
 760         }
 761
 762 skip_tunnel_info:
 763         rte_wmb();
 764
 765         /* Enable SA */
 766         ctl->valid = 1;
 767         return 0;
 768 }
 769
 770 bool
 771 cnxk_onf_ipsec_inb_sa_valid(struct roc_onf_ipsec_inb_sa *sa)
 772 {
 773         return !!sa->ctl.valid;
 774 }
 775
 776 bool
 777 cnxk_onf_ipsec_outb_sa_valid(struct roc_onf_ipsec_outb_sa *sa)
 778 {
 779         return !!sa->ctl.valid;
 780 }
 781
 782 uint8_t
 783 cnxk_ipsec_ivlen_get(enum rte_crypto_cipher_algorithm c_algo,
 784                      enum rte_crypto_auth_algorithm a_algo,
 785                      enum rte_crypto_aead_algorithm aead_algo)
 786 {
 787         uint8_t ivlen = 0;
 788
 789         if (aead_algo == RTE_CRYPTO_AEAD_AES_GCM)
 790                 ivlen = 8;
 791
 792         switch (c_algo) {
 793         case RTE_CRYPTO_CIPHER_AES_CTR:
 794                 ivlen = 8;
 795                 break;
 796         case RTE_CRYPTO_CIPHER_3DES_CBC:
 797                 ivlen = ROC_CPT_DES_BLOCK_LENGTH;
 798                 break;
 799         case RTE_CRYPTO_CIPHER_AES_CBC:
 800                 ivlen = ROC_CPT_AES_BLOCK_LENGTH;
 801                 break;
 802         default:
 803                 break;
 804         }
 805
 806         switch (a_algo) {
 807         case RTE_CRYPTO_AUTH_AES_GMAC:
 808                 ivlen = 8;
 809                 break;
 810         default:
 811                 break;
 812         }
 813
 814         return ivlen;
 815 }
 816
 817 uint8_t
 818 cnxk_ipsec_icvlen_get(enum rte_crypto_cipher_algorithm c_algo,
 819                       enum rte_crypto_auth_algorithm a_algo,
 820                       enum rte_crypto_aead_algorithm aead_algo)
 821 {
 822         uint8_t icv = 0;
 823
 824         (void)c_algo;
 825
 826         switch (a_algo) {
 827         case RTE_CRYPTO_AUTH_NULL:
 828                 icv = 0;
 829                 break;
 830         case RTE_CRYPTO_AUTH_SHA1_HMAC:
 831                 icv = 12;
 832                 break;
 833         case RTE_CRYPTO_AUTH_SHA256_HMAC:
 834         case RTE_CRYPTO_AUTH_AES_GMAC:
 835                 icv = 16;
 836                 break;
 837         case RTE_CRYPTO_AUTH_SHA384_HMAC:
 838                 icv = 24;
 839                 break;
 840         case RTE_CRYPTO_AUTH_SHA512_HMAC:
 841                 icv = 32;
 842                 break;
 843         case RTE_CRYPTO_AUTH_AES_XCBC_MAC:
 844                 icv = 12;
 845                 break;
 846         default:
 847                 break;
 848         }
 849
 850         switch (aead_algo) {
 851         case RTE_CRYPTO_AEAD_AES_GCM:
 852                 icv = 16;
 853                 break;
 854         default:
 855                 break;
 856         }
 857
 858         return icv;
 859 }
 860
 861 uint8_t
 862 cnxk_ipsec_outb_roundup_byte(enum rte_crypto_cipher_algorithm c_algo,
 863                              enum rte_crypto_aead_algorithm aead_algo)
 864 {
 865         uint8_t roundup_byte = 4;
 866
 867         if (aead_algo == RTE_CRYPTO_AEAD_AES_GCM)
 868                 return roundup_byte;
 869
 870         switch (c_algo) {
 871         case RTE_CRYPTO_CIPHER_AES_CTR:
 872                 roundup_byte = 4;
 873                 break;
 874         case RTE_CRYPTO_CIPHER_AES_CBC:
 875                 roundup_byte = 16;
 876                 break;
 877         case RTE_CRYPTO_CIPHER_3DES_CBC:
 878                 roundup_byte = 8;
 879                 break;
 880         case RTE_CRYPTO_CIPHER_NULL:
 881                 roundup_byte = 4;
 882                 break;
 883         default:
 884                 break;
 885         }
 886
 887         return roundup_byte;
 888 }
 889
 890 int
 891 cnxk_ipsec_outb_rlens_get(struct cnxk_ipsec_outb_rlens *rlens,
 892                           struct rte_security_ipsec_xform *ipsec_xfrm,
 893                           struct rte_crypto_sym_xform *crypto_xfrm)
 894 {
 895         struct rte_security_ipsec_tunnel_param *tunnel = &ipsec_xfrm->tunnel;
 896         enum rte_crypto_cipher_algorithm c_algo = RTE_CRYPTO_CIPHER_NULL;
 897         enum rte_crypto_auth_algorithm a_algo = RTE_CRYPTO_AUTH_NULL;
 898         enum rte_crypto_aead_algorithm aead_algo = 0;
 899         uint16_t partial_len = 0;
 900         uint8_t roundup_byte = 0;
 901         int8_t roundup_len = 0;
 902
 903         memset(rlens, 0, sizeof(struct cnxk_ipsec_outb_rlens));
 904
 905         /* Get Cipher and Auth algo */
 906         if (crypto_xfrm->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
 907                 aead_algo = crypto_xfrm->aead.algo;
 908         } else {
 909                 if (crypto_xfrm->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
 910                         c_algo = crypto_xfrm->cipher.algo;
 911                 else
 912                         a_algo = crypto_xfrm->auth.algo;
 913
 914                 if (crypto_xfrm->next) {
 915                         if (crypto_xfrm->next->type ==
 916                             RTE_CRYPTO_SYM_XFORM_CIPHER)
 917                                 c_algo = crypto_xfrm->next->cipher.algo;
 918                         else
 919                                 a_algo = crypto_xfrm->next->auth.algo;
 920                 }
 921         }
 922
 923         if (ipsec_xfrm->proto == RTE_SECURITY_IPSEC_SA_PROTO_ESP) {
 924                 partial_len = ROC_CPT_ESP_HDR_LEN;
 925                 roundup_len = ROC_CPT_ESP_TRL_LEN;
 926         } else {
 927                 partial_len = ROC_CPT_AH_HDR_LEN;
 928         }
 929
 930         if (ipsec_xfrm->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) {
 931                 if (tunnel->type == RTE_SECURITY_IPSEC_TUNNEL_IPV4)
 932                         partial_len += ROC_CPT_TUNNEL_IPV4_HDR_LEN;
 933                 else
 934                         partial_len += ROC_CPT_TUNNEL_IPV6_HDR_LEN;
 935         }
 936
 937         partial_len += cnxk_ipsec_ivlen_get(c_algo, a_algo, aead_algo);
 938         partial_len += cnxk_ipsec_icvlen_get(c_algo, a_algo, aead_algo);
 939         roundup_byte = cnxk_ipsec_outb_roundup_byte(c_algo, aead_algo);
 940
 941         if (ipsec_xfrm->options.udp_encap)
 942                 partial_len += sizeof(struct rte_udp_hdr);
 943
 944         rlens->partial_len = partial_len;
 945         rlens->roundup_len = roundup_len;
 946         rlens->roundup_byte = roundup_byte;
 947         rlens->max_extended_len = partial_len + roundup_len + roundup_byte;
 948         return 0;
 949 }