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 {
 309         union roc_ot_ipsec_sa_word2 w2;
 310         uint32_t replay_win_sz;
 311         size_t offset;
 312         int rc;
 313
 314         w2.u64 = 0;
 315         rc = ot_ipsec_sa_common_param_fill(&w2, sa->cipher_key, sa->w8.s.salt,
 316                                            sa->hmac_opad_ipad, ipsec_xfrm,
 317                                            crypto_xfrm);
 318         if (rc)
 319                 return rc;
 320
 321         /* Updata common word2 data */
 322         sa->w2.u64 = w2.u64;
 323
 324         /* Only support power-of-two window sizes supported */
 325         replay_win_sz = ipsec_xfrm->replay_win_sz;
 326         if (replay_win_sz) {
 327                 if (!rte_is_power_of_2(replay_win_sz) ||
 328                     replay_win_sz > ROC_AR_WIN_SIZE_MAX)
 329                         return -ENOTSUP;
 330
 331                 sa->w0.s.ar_win = rte_log2_u32(replay_win_sz) - 5;
 332         }
 333
 334         rc = ot_ipsec_inb_tunnel_hdr_fill(sa, ipsec_xfrm);
 335         if (rc)
 336                 return rc;
 337
 338         /* Default options for pkt_out and pkt_fmt are with
 339          * second pass meta and no defrag.
 340          */
 341         sa->w0.s.pkt_format = ROC_IE_OT_SA_PKT_FMT_META;
 342         sa->w0.s.pkt_output = ROC_IE_OT_SA_PKT_OUTPUT_HW_BASED_DEFRAG;
 343         sa->w0.s.pkind = ROC_OT_CPT_META_PKIND;
 344
 345         /* ESN */
 346         sa->w2.s.esn_en = !!ipsec_xfrm->options.esn;
 347         if (ipsec_xfrm->options.udp_encap) {
 348                 sa->w10.s.udp_src_port = 4500;
 349                 sa->w10.s.udp_dst_port = 4500;
 350         }
 351
 352         if (ipsec_xfrm->options.udp_ports_verify)
 353                 sa->w2.s.udp_ports_verify = 1;
 354
 355         offset = offsetof(struct roc_ot_ipsec_inb_sa, ctx);
 356         /* Word offset for HW managed SA field */
 357         sa->w0.s.hw_ctx_off = offset / 8;
 358         /* Context push size for inbound spans up to hw_ctx including
 359          * ar_base field, in 8b units
 360          */
 361         sa->w0.s.ctx_push_size = sa->w0.s.hw_ctx_off + 1;
 362         /* Entire context size in 128B units */
 363         sa->w0.s.ctx_size =
 364                 (PLT_ALIGN_CEIL(ot_ipsec_inb_ctx_size(sa), ROC_CTX_UNIT_128B) /
 365                  ROC_CTX_UNIT_128B) -
 366                 1;
 367
 368         /**
 369          * CPT MC triggers expiry when counter value changes from 2 to 1. To
 370          * mitigate this behaviour add 1 to the life counter values provided.
 371          */
 372
 373         if (ipsec_xfrm->life.bytes_soft_limit) {
 374                 sa->ctx.soft_life = ipsec_xfrm->life.bytes_soft_limit + 1;
 375                 sa->w0.s.soft_life_dec = 1;
 376         }
 377
 378         if (ipsec_xfrm->life.packets_soft_limit) {
 379                 sa->ctx.soft_life = ipsec_xfrm->life.packets_soft_limit + 1;
 380                 sa->w0.s.soft_life_dec = 1;
 381         }
 382
 383         if (ipsec_xfrm->life.bytes_hard_limit) {
 384                 sa->ctx.hard_life = ipsec_xfrm->life.bytes_hard_limit + 1;
 385                 sa->w0.s.hard_life_dec = 1;
 386         }
 387
 388         if (ipsec_xfrm->life.packets_hard_limit) {
 389                 sa->ctx.hard_life = ipsec_xfrm->life.packets_hard_limit + 1;
 390                 sa->w0.s.hard_life_dec = 1;
 391         }
 392
 393         /* There are two words of CPT_CTX_HW_S for ucode to skip */
 394         sa->w0.s.ctx_hdr_size = 1;
 395         sa->w0.s.aop_valid = 1;
 396         sa->w0.s.et_ovrwr = 1;
 397
 398         rte_wmb();
 399
 400         /* Enable SA */
 401         sa->w2.s.valid = 1;
 402         return 0;
 403 }
 404
 405 int
 406 cnxk_ot_ipsec_outb_sa_fill(struct roc_ot_ipsec_outb_sa *sa,
 407                            struct rte_security_ipsec_xform *ipsec_xfrm,
 408                            struct rte_crypto_sym_xform *crypto_xfrm)
 409 {
 410         struct rte_security_ipsec_tunnel_param *tunnel = &ipsec_xfrm->tunnel;
 411         union roc_ot_ipsec_sa_word2 w2;
 412         size_t offset;
 413         int rc;
 414
 415         w2.u64 = 0;
 416         rc = ot_ipsec_sa_common_param_fill(&w2, sa->cipher_key, sa->iv.s.salt,
 417                                            sa->hmac_opad_ipad, ipsec_xfrm,
 418                                            crypto_xfrm);
 419         if (rc)
 420                 return rc;
 421
 422         /* Update common word2 data */
 423         sa->w2.u64 = w2.u64;
 424
 425         if (ipsec_xfrm->mode != RTE_SECURITY_IPSEC_SA_MODE_TUNNEL)
 426                 goto skip_tunnel_info;
 427
 428         /* Tunnel header info */
 429         switch (tunnel->type) {
 430         case RTE_SECURITY_IPSEC_TUNNEL_IPV4:
 431                 sa->w2.s.outer_ip_ver = ROC_IE_SA_IP_VERSION_4;
 432                 memcpy(&sa->outer_hdr.ipv4.src_addr, &tunnel->ipv4.src_ip,
 433                        sizeof(struct in_addr));
 434                 memcpy(&sa->outer_hdr.ipv4.dst_addr, &tunnel->ipv4.dst_ip,
 435                        sizeof(struct in_addr));
 436
 437                 /* IP Source and Dest seems to be in LE/CPU endian */
 438                 sa->outer_hdr.ipv4.src_addr =
 439                         rte_be_to_cpu_32(sa->outer_hdr.ipv4.src_addr);
 440                 sa->outer_hdr.ipv4.dst_addr =
 441                         rte_be_to_cpu_32(sa->outer_hdr.ipv4.dst_addr);
 442
 443                 /* Outer header DF bit source */
 444                 if (!ipsec_xfrm->options.copy_df) {
 445                         sa->w2.s.ipv4_df_src_or_ipv6_flw_lbl_src =
 446                                 ROC_IE_OT_SA_COPY_FROM_SA;
 447                         sa->w10.s.ipv4_df_or_ipv6_flw_lbl = tunnel->ipv4.df;
 448                 } else {
 449                         sa->w2.s.ipv4_df_src_or_ipv6_flw_lbl_src =
 450                                 ROC_IE_OT_SA_COPY_FROM_INNER_IP_HDR;
 451                 }
 452
 453                 /* Outer header DSCP source */
 454                 if (!ipsec_xfrm->options.copy_dscp) {
 455                         sa->w2.s.dscp_src = ROC_IE_OT_SA_COPY_FROM_SA;
 456                         sa->w10.s.dscp = tunnel->ipv4.dscp;
 457                 } else {
 458                         sa->w2.s.dscp_src = ROC_IE_OT_SA_COPY_FROM_INNER_IP_HDR;
 459                 }
 460                 break;
 461         case RTE_SECURITY_IPSEC_TUNNEL_IPV6:
 462                 sa->w2.s.outer_ip_ver = ROC_IE_SA_IP_VERSION_6;
 463                 memcpy(&sa->outer_hdr.ipv6.src_addr, &tunnel->ipv6.src_addr,
 464                        sizeof(struct in6_addr));
 465                 memcpy(&sa->outer_hdr.ipv6.dst_addr, &tunnel->ipv6.dst_addr,
 466                        sizeof(struct in6_addr));
 467
 468                 /* Outer header flow label source */
 469                 if (!ipsec_xfrm->options.copy_flabel) {
 470                         sa->w2.s.ipv4_df_src_or_ipv6_flw_lbl_src =
 471                                 ROC_IE_OT_SA_COPY_FROM_SA;
 472
 473                         sa->w10.s.ipv4_df_or_ipv6_flw_lbl = tunnel->ipv6.flabel;
 474                 } else {
 475                         sa->w2.s.ipv4_df_src_or_ipv6_flw_lbl_src =
 476                                 ROC_IE_OT_SA_COPY_FROM_INNER_IP_HDR;
 477                 }
 478
 479                 /* Outer header DSCP source */
 480                 if (!ipsec_xfrm->options.copy_dscp) {
 481                         sa->w2.s.dscp_src = ROC_IE_OT_SA_COPY_FROM_SA;
 482                         sa->w10.s.dscp = tunnel->ipv6.dscp;
 483                 } else {
 484                         sa->w2.s.dscp_src = ROC_IE_OT_SA_COPY_FROM_INNER_IP_HDR;
 485                 }
 486                 break;
 487         default:
 488                 return -EINVAL;
 489         }
 490
 491 skip_tunnel_info:
 492         /* ESN */
 493         sa->w0.s.esn_en = !!ipsec_xfrm->options.esn;
 494
 495         if (ipsec_xfrm->esn.value)
 496                 sa->ctx.esn_val = ipsec_xfrm->esn.value - 1;
 497
 498         if (ipsec_xfrm->options.udp_encap) {
 499                 sa->w10.s.udp_src_port = 4500;
 500                 sa->w10.s.udp_dst_port = 4500;
 501         }
 502
 503         offset = offsetof(struct roc_ot_ipsec_outb_sa, ctx);
 504         /* Word offset for HW managed SA field */
 505         sa->w0.s.hw_ctx_off = offset / 8;
 506
 507         /* Context push size is up to err ctl in HW ctx */
 508         sa->w0.s.ctx_push_size = sa->w0.s.hw_ctx_off + 1;
 509
 510         /* Entire context size in 128B units */
 511         offset = sizeof(struct roc_ot_ipsec_outb_sa);
 512         sa->w0.s.ctx_size = (PLT_ALIGN_CEIL(offset, ROC_CTX_UNIT_128B) /
 513                              ROC_CTX_UNIT_128B) -
 514                             1;
 515
 516         /* IPID gen */
 517         sa->w2.s.ipid_gen = 1;
 518
 519         /**
 520          * CPT MC triggers expiry when counter value changes from 2 to 1. To
 521          * mitigate this behaviour add 1 to the life counter values provided.
 522          */
 523
 524         if (ipsec_xfrm->life.bytes_soft_limit) {
 525                 sa->ctx.soft_life = ipsec_xfrm->life.bytes_soft_limit + 1;
 526                 sa->w0.s.soft_life_dec = 1;
 527         }
 528
 529         if (ipsec_xfrm->life.packets_soft_limit) {
 530                 sa->ctx.soft_life = ipsec_xfrm->life.packets_soft_limit + 1;
 531                 sa->w0.s.soft_life_dec = 1;
 532         }
 533
 534         if (ipsec_xfrm->life.bytes_hard_limit) {
 535                 sa->ctx.hard_life = ipsec_xfrm->life.bytes_hard_limit + 1;
 536                 sa->w0.s.hard_life_dec = 1;
 537         }
 538
 539         if (ipsec_xfrm->life.packets_hard_limit) {
 540                 sa->ctx.hard_life = ipsec_xfrm->life.packets_hard_limit + 1;
 541                 sa->w0.s.hard_life_dec = 1;
 542         }
 543
 544         /* There are two words of CPT_CTX_HW_S for ucode to skip */
 545         sa->w0.s.ctx_hdr_size = 1;
 546         sa->w0.s.aop_valid = 1;
 547
 548         rte_wmb();
 549
 550         /* Enable SA */
 551         sa->w2.s.valid = 1;
 552         return 0;
 553 }
 554
 555 bool
 556 cnxk_ot_ipsec_inb_sa_valid(struct roc_ot_ipsec_inb_sa *sa)
 557 {
 558         return !!sa->w2.s.valid;
 559 }
 560
 561 bool
 562 cnxk_ot_ipsec_outb_sa_valid(struct roc_ot_ipsec_outb_sa *sa)
 563 {
 564         return !!sa->w2.s.valid;
 565 }
 566
 567 static inline int
 568 ipsec_xfrm_verify(struct rte_security_ipsec_xform *ipsec_xfrm,
 569                   struct rte_crypto_sym_xform *crypto_xfrm)
 570 {
 571         if (crypto_xfrm->next == NULL)
 572                 return -EINVAL;
 573
 574         if (ipsec_xfrm->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS) {
 575                 if (crypto_xfrm->type != RTE_CRYPTO_SYM_XFORM_AUTH ||
 576                     crypto_xfrm->next->type != RTE_CRYPTO_SYM_XFORM_CIPHER)
 577                         return -EINVAL;
 578         } else {
 579                 if (crypto_xfrm->type != RTE_CRYPTO_SYM_XFORM_CIPHER ||
 580                     crypto_xfrm->next->type != RTE_CRYPTO_SYM_XFORM_AUTH)
 581                         return -EINVAL;
 582         }
 583
 584         return 0;
 585 }
 586
 587 static int
 588 onf_ipsec_sa_common_param_fill(struct roc_ie_onf_sa_ctl *ctl, uint8_t *salt,
 589                                uint8_t *cipher_key, uint8_t *hmac_opad_ipad,
 590                                struct rte_security_ipsec_xform *ipsec_xfrm,
 591                                struct rte_crypto_sym_xform *crypto_xfrm)
 592 {
 593         struct rte_crypto_sym_xform *auth_xfrm, *cipher_xfrm;
 594         int rc, length, auth_key_len;
 595         const uint8_t *key = NULL;
 596
 597         /* Set direction */
 598         switch (ipsec_xfrm->direction) {
 599         case RTE_SECURITY_IPSEC_SA_DIR_INGRESS:
 600                 ctl->direction = ROC_IE_SA_DIR_INBOUND;
 601                 auth_xfrm = crypto_xfrm;
 602                 cipher_xfrm = crypto_xfrm->next;
 603                 break;
 604         case RTE_SECURITY_IPSEC_SA_DIR_EGRESS:
 605                 ctl->direction = ROC_IE_SA_DIR_OUTBOUND;
 606                 cipher_xfrm = crypto_xfrm;
 607                 auth_xfrm = crypto_xfrm->next;
 608                 break;
 609         default:
 610                 return -EINVAL;
 611         }
 612
 613         /* Set protocol - ESP vs AH */
 614         switch (ipsec_xfrm->proto) {
 615         case RTE_SECURITY_IPSEC_SA_PROTO_ESP:
 616                 ctl->ipsec_proto = ROC_IE_SA_PROTOCOL_ESP;
 617                 break;
 618         case RTE_SECURITY_IPSEC_SA_PROTO_AH:
 619                 return -ENOTSUP;
 620         default:
 621                 return -EINVAL;
 622         }
 623
 624         /* Set mode - transport vs tunnel */
 625         switch (ipsec_xfrm->mode) {
 626         case RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT:
 627                 ctl->ipsec_mode = ROC_IE_SA_MODE_TRANSPORT;
 628                 break;
 629         case RTE_SECURITY_IPSEC_SA_MODE_TUNNEL:
 630                 ctl->ipsec_mode = ROC_IE_SA_MODE_TUNNEL;
 631                 break;
 632         default:
 633                 return -EINVAL;
 634         }
 635
 636         /* Set encryption algorithm */
 637         if (crypto_xfrm->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
 638                 length = crypto_xfrm->aead.key.length;
 639
 640                 switch (crypto_xfrm->aead.algo) {
 641                 case RTE_CRYPTO_AEAD_AES_GCM:
 642                         ctl->enc_type = ROC_IE_ON_SA_ENC_AES_GCM;
 643                         ctl->auth_type = ROC_IE_ON_SA_AUTH_NULL;
 644                         memcpy(salt, &ipsec_xfrm->salt, 4);
 645                         key = crypto_xfrm->aead.key.data;
 646                         break;
 647                 default:
 648                         return -ENOTSUP;
 649                 }
 650
 651         } else {
 652                 rc = ipsec_xfrm_verify(ipsec_xfrm, crypto_xfrm);
 653                 if (rc)
 654                         return rc;
 655
 656                 switch (cipher_xfrm->cipher.algo) {
 657                 case RTE_CRYPTO_CIPHER_AES_CBC:
 658                         ctl->enc_type = ROC_IE_ON_SA_ENC_AES_CBC;
 659                         break;
 660                 case RTE_CRYPTO_CIPHER_AES_CTR:
 661                         ctl->enc_type = ROC_IE_ON_SA_ENC_AES_CTR;
 662                         break;
 663                 default:
 664                         return -ENOTSUP;
 665                 }
 666
 667                 switch (auth_xfrm->auth.algo) {
 668                 case RTE_CRYPTO_AUTH_SHA1_HMAC:
 669                         ctl->auth_type = ROC_IE_ON_SA_AUTH_SHA1;
 670                         break;
 671                 default:
 672                         return -ENOTSUP;
 673                 }
 674                 auth_key_len = auth_xfrm->auth.key.length;
 675                 if (auth_key_len < 20 || auth_key_len > 64)
 676                         return -ENOTSUP;
 677
 678                 key = cipher_xfrm->cipher.key.data;
 679                 length = cipher_xfrm->cipher.key.length;
 680
 681                 ipsec_hmac_opad_ipad_gen(auth_xfrm, hmac_opad_ipad);
 682         }
 683
 684         switch (length) {
 685         case ROC_CPT_AES128_KEY_LEN:
 686                 ctl->aes_key_len = ROC_IE_SA_AES_KEY_LEN_128;
 687                 break;
 688         case ROC_CPT_AES192_KEY_LEN:
 689                 ctl->aes_key_len = ROC_IE_SA_AES_KEY_LEN_192;
 690                 break;
 691         case ROC_CPT_AES256_KEY_LEN:
 692                 ctl->aes_key_len = ROC_IE_SA_AES_KEY_LEN_256;
 693                 break;
 694         default:
 695                 return -EINVAL;
 696         }
 697
 698         memcpy(cipher_key, key, length);
 699
 700         if (ipsec_xfrm->options.esn)
 701                 ctl->esn_en = 1;
 702
 703         ctl->spi = rte_cpu_to_be_32(ipsec_xfrm->spi);
 704         return 0;
 705 }
 706
 707 int
 708 cnxk_onf_ipsec_inb_sa_fill(struct roc_onf_ipsec_inb_sa *sa,
 709                            struct rte_security_ipsec_xform *ipsec_xfrm,
 710                            struct rte_crypto_sym_xform *crypto_xfrm)
 711 {
 712         struct roc_ie_onf_sa_ctl *ctl = &sa->ctl;
 713         int rc;
 714
 715         rc = onf_ipsec_sa_common_param_fill(ctl, sa->nonce, sa->cipher_key,
 716                                             sa->hmac_key, ipsec_xfrm,
 717                                             crypto_xfrm);
 718         if (rc)
 719                 return rc;
 720
 721         rte_wmb();
 722
 723         /* Enable SA */
 724         ctl->valid = 1;
 725         return 0;
 726 }
 727
 728 int
 729 cnxk_onf_ipsec_outb_sa_fill(struct roc_onf_ipsec_outb_sa *sa,
 730                             struct rte_security_ipsec_xform *ipsec_xfrm,
 731                             struct rte_crypto_sym_xform *crypto_xfrm)
 732 {
 733         struct rte_security_ipsec_tunnel_param *tunnel = &ipsec_xfrm->tunnel;
 734         struct roc_ie_onf_sa_ctl *ctl = &sa->ctl;
 735         int rc;
 736
 737         /* Fill common params */
 738         rc = onf_ipsec_sa_common_param_fill(ctl, sa->nonce, sa->cipher_key,
 739                                             sa->hmac_key, ipsec_xfrm,
 740                                             crypto_xfrm);
 741         if (rc)
 742                 return rc;
 743
 744         if (ipsec_xfrm->mode != RTE_SECURITY_IPSEC_SA_MODE_TUNNEL)
 745                 goto skip_tunnel_info;
 746
 747         /* Tunnel header info */
 748         switch (tunnel->type) {
 749         case RTE_SECURITY_IPSEC_TUNNEL_IPV4:
 750                 memcpy(&sa->ip_src, &tunnel->ipv4.src_ip,
 751                        sizeof(struct in_addr));
 752                 memcpy(&sa->ip_dst, &tunnel->ipv4.dst_ip,
 753                        sizeof(struct in_addr));
 754                 break;
 755         case RTE_SECURITY_IPSEC_TUNNEL_IPV6:
 756                 return -ENOTSUP;
 757         default:
 758                 return -EINVAL;
 759         }
 760
 761         /* Update udp encap ports */
 762         if (ipsec_xfrm->options.udp_encap == 1) {
 763                 sa->udp_src = 4500;
 764                 sa->udp_dst = 4500;
 765         }
 766
 767 skip_tunnel_info:
 768         rte_wmb();
 769
 770         /* Enable SA */
 771         ctl->valid = 1;
 772         return 0;
 773 }
 774
 775 bool
 776 cnxk_onf_ipsec_inb_sa_valid(struct roc_onf_ipsec_inb_sa *sa)
 777 {
 778         return !!sa->ctl.valid;
 779 }
 780
 781 bool
 782 cnxk_onf_ipsec_outb_sa_valid(struct roc_onf_ipsec_outb_sa *sa)
 783 {
 784         return !!sa->ctl.valid;
 785 }
 786
 787 uint8_t
 788 cnxk_ipsec_ivlen_get(enum rte_crypto_cipher_algorithm c_algo,
 789                      enum rte_crypto_auth_algorithm a_algo,
 790                      enum rte_crypto_aead_algorithm aead_algo)
 791 {
 792         uint8_t ivlen = 0;
 793
 794         if (aead_algo == RTE_CRYPTO_AEAD_AES_GCM)
 795                 ivlen = 8;
 796
 797         switch (c_algo) {
 798         case RTE_CRYPTO_CIPHER_AES_CTR:
 799                 ivlen = 8;
 800                 break;
 801         case RTE_CRYPTO_CIPHER_3DES_CBC:
 802                 ivlen = ROC_CPT_DES_BLOCK_LENGTH;
 803                 break;
 804         case RTE_CRYPTO_CIPHER_AES_CBC:
 805                 ivlen = ROC_CPT_AES_BLOCK_LENGTH;
 806                 break;
 807         default:
 808                 break;
 809         }
 810
 811         switch (a_algo) {
 812         case RTE_CRYPTO_AUTH_AES_GMAC:
 813                 ivlen = 8;
 814                 break;
 815         default:
 816                 break;
 817         }
 818
 819         return ivlen;
 820 }
 821
 822 uint8_t
 823 cnxk_ipsec_icvlen_get(enum rte_crypto_cipher_algorithm c_algo,
 824                       enum rte_crypto_auth_algorithm a_algo,
 825                       enum rte_crypto_aead_algorithm aead_algo)
 826 {
 827         uint8_t icv = 0;
 828
 829         (void)c_algo;
 830
 831         switch (a_algo) {
 832         case RTE_CRYPTO_AUTH_NULL:
 833                 icv = 0;
 834                 break;
 835         case RTE_CRYPTO_AUTH_SHA1_HMAC:
 836                 icv = 12;
 837                 break;
 838         case RTE_CRYPTO_AUTH_SHA256_HMAC:
 839         case RTE_CRYPTO_AUTH_AES_GMAC:
 840                 icv = 16;
 841                 break;
 842         case RTE_CRYPTO_AUTH_SHA384_HMAC:
 843                 icv = 24;
 844                 break;
 845         case RTE_CRYPTO_AUTH_SHA512_HMAC:
 846                 icv = 32;
 847                 break;
 848         case RTE_CRYPTO_AUTH_AES_XCBC_MAC:
 849                 icv = 12;
 850                 break;
 851         default:
 852                 break;
 853         }
 854
 855         switch (aead_algo) {
 856         case RTE_CRYPTO_AEAD_AES_GCM:
 857                 icv = 16;
 858                 break;
 859         default:
 860                 break;
 861         }
 862
 863         return icv;
 864 }
 865
 866 uint8_t
 867 cnxk_ipsec_outb_roundup_byte(enum rte_crypto_cipher_algorithm c_algo,
 868                              enum rte_crypto_aead_algorithm aead_algo)
 869 {
 870         uint8_t roundup_byte = 4;
 871
 872         if (aead_algo == RTE_CRYPTO_AEAD_AES_GCM)
 873                 return roundup_byte;
 874
 875         switch (c_algo) {
 876         case RTE_CRYPTO_CIPHER_AES_CTR:
 877                 roundup_byte = 4;
 878                 break;
 879         case RTE_CRYPTO_CIPHER_AES_CBC:
 880                 roundup_byte = 16;
 881                 break;
 882         case RTE_CRYPTO_CIPHER_3DES_CBC:
 883                 roundup_byte = 8;
 884                 break;
 885         case RTE_CRYPTO_CIPHER_NULL:
 886                 roundup_byte = 4;
 887                 break;
 888         default:
 889                 break;
 890         }
 891
 892         return roundup_byte;
 893 }
 894
 895 int
 896 cnxk_ipsec_outb_rlens_get(struct cnxk_ipsec_outb_rlens *rlens,
 897                           struct rte_security_ipsec_xform *ipsec_xfrm,
 898                           struct rte_crypto_sym_xform *crypto_xfrm)
 899 {
 900         struct rte_security_ipsec_tunnel_param *tunnel = &ipsec_xfrm->tunnel;
 901         enum rte_crypto_cipher_algorithm c_algo = RTE_CRYPTO_CIPHER_NULL;
 902         enum rte_crypto_auth_algorithm a_algo = RTE_CRYPTO_AUTH_NULL;
 903         enum rte_crypto_aead_algorithm aead_algo = 0;
 904         uint16_t partial_len = 0;
 905         uint8_t roundup_byte = 0;
 906         int8_t roundup_len = 0;
 907
 908         memset(rlens, 0, sizeof(struct cnxk_ipsec_outb_rlens));
 909
 910         /* Get Cipher and Auth algo */
 911         if (crypto_xfrm->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
 912                 aead_algo = crypto_xfrm->aead.algo;
 913         } else {
 914                 if (crypto_xfrm->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
 915                         c_algo = crypto_xfrm->cipher.algo;
 916                 else
 917                         a_algo = crypto_xfrm->auth.algo;
 918
 919                 if (crypto_xfrm->next) {
 920                         if (crypto_xfrm->next->type ==
 921                             RTE_CRYPTO_SYM_XFORM_CIPHER)
 922                                 c_algo = crypto_xfrm->next->cipher.algo;
 923                         else
 924                                 a_algo = crypto_xfrm->next->auth.algo;
 925                 }
 926         }
 927
 928         if (ipsec_xfrm->proto == RTE_SECURITY_IPSEC_SA_PROTO_ESP) {
 929                 partial_len = ROC_CPT_ESP_HDR_LEN;
 930                 roundup_len = ROC_CPT_ESP_TRL_LEN;
 931         } else {
 932                 partial_len = ROC_CPT_AH_HDR_LEN;
 933         }
 934
 935         if (ipsec_xfrm->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) {
 936                 if (tunnel->type == RTE_SECURITY_IPSEC_TUNNEL_IPV4)
 937                         partial_len += ROC_CPT_TUNNEL_IPV4_HDR_LEN;
 938                 else
 939                         partial_len += ROC_CPT_TUNNEL_IPV6_HDR_LEN;
 940         }
 941
 942         partial_len += cnxk_ipsec_ivlen_get(c_algo, a_algo, aead_algo);
 943         partial_len += cnxk_ipsec_icvlen_get(c_algo, a_algo, aead_algo);
 944         roundup_byte = cnxk_ipsec_outb_roundup_byte(c_algo, aead_algo);
 945
 946         if (ipsec_xfrm->options.udp_encap)
 947                 partial_len += sizeof(struct rte_udp_hdr);
 948
 949         rlens->partial_len = partial_len;
 950         rlens->roundup_len = roundup_len;
 951         rlens->roundup_byte = roundup_byte;
 952         rlens->max_extended_len = partial_len + roundup_len + roundup_byte;
 953         return 0;
 954 }