1 /* 2 * This file is part of the Chelsio T6 Crypto driver for Linux. 3 * 4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 * 34 */ 35 36 #ifndef __CHCR_ALGO_H__ 37 #define __CHCR_ALGO_H__ 38 39 /* Crypto key context */ 40 #define KEY_CONTEXT_CTX_LEN_S 24 41 #define KEY_CONTEXT_CTX_LEN_M 0xff 42 #define KEY_CONTEXT_CTX_LEN_V(x) ((x) << KEY_CONTEXT_CTX_LEN_S) 43 #define KEY_CONTEXT_CTX_LEN_G(x) \ 44 (((x) >> KEY_CONTEXT_CTX_LEN_S) & KEY_CONTEXT_CTX_LEN_M) 45 46 #define KEY_CONTEXT_DUAL_CK_S 12 47 #define KEY_CONTEXT_DUAL_CK_M 0x1 48 #define KEY_CONTEXT_DUAL_CK_V(x) ((x) << KEY_CONTEXT_DUAL_CK_S) 49 #define KEY_CONTEXT_DUAL_CK_G(x) \ 50 (((x) >> KEY_CONTEXT_DUAL_CK_S) & KEY_CONTEXT_DUAL_CK_M) 51 #define KEY_CONTEXT_DUAL_CK_F KEY_CONTEXT_DUAL_CK_V(1U) 52 53 #define KEY_CONTEXT_SALT_PRESENT_S 10 54 #define KEY_CONTEXT_SALT_PRESENT_M 0x1 55 #define KEY_CONTEXT_SALT_PRESENT_V(x) ((x) << KEY_CONTEXT_SALT_PRESENT_S) 56 #define KEY_CONTEXT_SALT_PRESENT_G(x) \ 57 (((x) >> KEY_CONTEXT_SALT_PRESENT_S) & \ 58 KEY_CONTEXT_SALT_PRESENT_M) 59 #define KEY_CONTEXT_SALT_PRESENT_F KEY_CONTEXT_SALT_PRESENT_V(1U) 60 61 #define KEY_CONTEXT_VALID_S 0 62 #define KEY_CONTEXT_VALID_M 0x1 63 #define KEY_CONTEXT_VALID_V(x) ((x) << KEY_CONTEXT_VALID_S) 64 #define KEY_CONTEXT_VALID_G(x) \ 65 (((x) >> KEY_CONTEXT_VALID_S) & \ 66 KEY_CONTEXT_VALID_M) 67 #define KEY_CONTEXT_VALID_F KEY_CONTEXT_VALID_V(1U) 68 69 #define KEY_CONTEXT_CK_SIZE_S 6 70 #define KEY_CONTEXT_CK_SIZE_M 0xf 71 #define KEY_CONTEXT_CK_SIZE_V(x) ((x) << KEY_CONTEXT_CK_SIZE_S) 72 #define KEY_CONTEXT_CK_SIZE_G(x) \ 73 (((x) >> KEY_CONTEXT_CK_SIZE_S) & KEY_CONTEXT_CK_SIZE_M) 74 75 #define KEY_CONTEXT_MK_SIZE_S 2 76 #define KEY_CONTEXT_MK_SIZE_M 0xf 77 #define KEY_CONTEXT_MK_SIZE_V(x) ((x) << KEY_CONTEXT_MK_SIZE_S) 78 #define KEY_CONTEXT_MK_SIZE_G(x) \ 79 (((x) >> KEY_CONTEXT_MK_SIZE_S) & KEY_CONTEXT_MK_SIZE_M) 80 81 #define KEY_CONTEXT_OPAD_PRESENT_S 11 82 #define KEY_CONTEXT_OPAD_PRESENT_M 0x1 83 #define KEY_CONTEXT_OPAD_PRESENT_V(x) ((x) << KEY_CONTEXT_OPAD_PRESENT_S) 84 #define KEY_CONTEXT_OPAD_PRESENT_G(x) \ 85 (((x) >> KEY_CONTEXT_OPAD_PRESENT_S) & \ 86 KEY_CONTEXT_OPAD_PRESENT_M) 87 #define KEY_CONTEXT_OPAD_PRESENT_F KEY_CONTEXT_OPAD_PRESENT_V(1U) 88 89 #define CHCR_HASH_MAX_DIGEST_SIZE 64 90 #define CHCR_MAX_SHA_DIGEST_SIZE 64 91 92 #define IPSEC_TRUNCATED_ICV_SIZE 12 93 #define TLS_TRUNCATED_HMAC_SIZE 10 94 #define CBCMAC_DIGEST_SIZE 16 95 #define MAX_HASH_NAME 20 96 97 #define SHA1_INIT_STATE_5X4B 5 98 #define SHA256_INIT_STATE_8X4B 8 99 #define SHA512_INIT_STATE_8X8B 8 100 #define SHA1_INIT_STATE SHA1_INIT_STATE_5X4B 101 #define SHA224_INIT_STATE SHA256_INIT_STATE_8X4B 102 #define SHA256_INIT_STATE SHA256_INIT_STATE_8X4B 103 #define SHA384_INIT_STATE SHA512_INIT_STATE_8X8B 104 #define SHA512_INIT_STATE SHA512_INIT_STATE_8X8B 105 106 #define DUMMY_BYTES 16 107 108 #define IPAD_DATA 0x36363636 109 #define OPAD_DATA 0x5c5c5c5c 110 111 #define TRANSHDR_SIZE(kctx_len)\ 112 (sizeof(struct chcr_wr) +\ 113 kctx_len) 114 #define CIPHER_TRANSHDR_SIZE(kctx_len, sge_pairs) \ 115 (TRANSHDR_SIZE((kctx_len)) + (sge_pairs) +\ 116 sizeof(struct cpl_rx_phys_dsgl)) 117 #define HASH_TRANSHDR_SIZE(kctx_len)\ 118 (TRANSHDR_SIZE(kctx_len) + DUMMY_BYTES) 119 120 121 #define FILL_SEC_CPL_OP_IVINSR(id, len, ofst) \ 122 htonl( \ 123 CPL_TX_SEC_PDU_OPCODE_V(CPL_TX_SEC_PDU) | \ 124 CPL_TX_SEC_PDU_RXCHID_V((id)) | \ 125 CPL_TX_SEC_PDU_ACKFOLLOWS_V(0) | \ 126 CPL_TX_SEC_PDU_ULPTXLPBK_V(1) | \ 127 CPL_TX_SEC_PDU_CPLLEN_V((len)) | \ 128 CPL_TX_SEC_PDU_PLACEHOLDER_V(0) | \ 129 CPL_TX_SEC_PDU_IVINSRTOFST_V((ofst))) 130 131 #define FILL_SEC_CPL_CIPHERSTOP_HI(a_start, a_stop, c_start, c_stop_hi) \ 132 htonl( \ 133 CPL_TX_SEC_PDU_AADSTART_V((a_start)) | \ 134 CPL_TX_SEC_PDU_AADSTOP_V((a_stop)) | \ 135 CPL_TX_SEC_PDU_CIPHERSTART_V((c_start)) | \ 136 CPL_TX_SEC_PDU_CIPHERSTOP_HI_V((c_stop_hi))) 137 138 #define FILL_SEC_CPL_AUTHINSERT(c_stop_lo, a_start, a_stop, a_inst) \ 139 htonl( \ 140 CPL_TX_SEC_PDU_CIPHERSTOP_LO_V((c_stop_lo)) | \ 141 CPL_TX_SEC_PDU_AUTHSTART_V((a_start)) | \ 142 CPL_TX_SEC_PDU_AUTHSTOP_V((a_stop)) | \ 143 CPL_TX_SEC_PDU_AUTHINSERT_V((a_inst))) 144 145 #define FILL_SEC_CPL_SCMD0_SEQNO(ctrl, seq, cmode, amode, opad, size) \ 146 htonl( \ 147 SCMD_SEQ_NO_CTRL_V(0) | \ 148 SCMD_STATUS_PRESENT_V(0) | \ 149 SCMD_PROTO_VERSION_V(CHCR_SCMD_PROTO_VERSION_GENERIC) | \ 150 SCMD_ENC_DEC_CTRL_V((ctrl)) | \ 151 SCMD_CIPH_AUTH_SEQ_CTRL_V((seq)) | \ 152 SCMD_CIPH_MODE_V((cmode)) | \ 153 SCMD_AUTH_MODE_V((amode)) | \ 154 SCMD_HMAC_CTRL_V((opad)) | \ 155 SCMD_IV_SIZE_V((size)) | \ 156 SCMD_NUM_IVS_V(0)) 157 158 #define FILL_SEC_CPL_IVGEN_HDRLEN(last, more, ctx_in, mac, ivdrop, len) htonl( \ 159 SCMD_ENB_DBGID_V(0) | \ 160 SCMD_IV_GEN_CTRL_V(0) | \ 161 SCMD_LAST_FRAG_V((last)) | \ 162 SCMD_MORE_FRAGS_V((more)) | \ 163 SCMD_TLS_COMPPDU_V(0) | \ 164 SCMD_KEY_CTX_INLINE_V((ctx_in)) | \ 165 SCMD_TLS_FRAG_ENABLE_V(0) | \ 166 SCMD_MAC_ONLY_V((mac)) | \ 167 SCMD_AADIVDROP_V((ivdrop)) | \ 168 SCMD_HDR_LEN_V((len))) 169 170 #define FILL_KEY_CTX_HDR(ck_size, mk_size, d_ck, opad, ctx_len) \ 171 htonl(KEY_CONTEXT_VALID_V(1) | \ 172 KEY_CONTEXT_CK_SIZE_V((ck_size)) | \ 173 KEY_CONTEXT_MK_SIZE_V(mk_size) | \ 174 KEY_CONTEXT_DUAL_CK_V((d_ck)) | \ 175 KEY_CONTEXT_OPAD_PRESENT_V((opad)) | \ 176 KEY_CONTEXT_SALT_PRESENT_V(1) | \ 177 KEY_CONTEXT_CTX_LEN_V((ctx_len))) 178 179 #define FILL_WR_OP_CCTX_SIZE \ 180 htonl( \ 181 FW_CRYPTO_LOOKASIDE_WR_OPCODE_V( \ 182 FW_CRYPTO_LOOKASIDE_WR) | \ 183 FW_CRYPTO_LOOKASIDE_WR_COMPL_V(0) | \ 184 FW_CRYPTO_LOOKASIDE_WR_IMM_LEN_V((0)) | \ 185 FW_CRYPTO_LOOKASIDE_WR_CCTX_LOC_V(0) | \ 186 FW_CRYPTO_LOOKASIDE_WR_CCTX_SIZE_V(0)) 187 188 #define FILL_WR_RX_Q_ID(cid, qid, lcb, fid) \ 189 htonl( \ 190 FW_CRYPTO_LOOKASIDE_WR_RX_CHID_V((cid)) | \ 191 FW_CRYPTO_LOOKASIDE_WR_RX_Q_ID_V((qid)) | \ 192 FW_CRYPTO_LOOKASIDE_WR_LCB_V((lcb)) | \ 193 FW_CRYPTO_LOOKASIDE_WR_IV_V((IV_NOP)) | \ 194 FW_CRYPTO_LOOKASIDE_WR_FQIDX_V(fid)) 195 196 #define FILL_ULPTX_CMD_DEST(cid, qid) \ 197 htonl(ULPTX_CMD_V(ULP_TX_PKT) | \ 198 ULP_TXPKT_DEST_V(0) | \ 199 ULP_TXPKT_DATAMODIFY_V(0) | \ 200 ULP_TXPKT_CHANNELID_V((cid)) | \ 201 ULP_TXPKT_RO_V(1) | \ 202 ULP_TXPKT_FID_V(qid)) 203 204 #define KEYCTX_ALIGN_PAD(bs) ({unsigned int _bs = (bs);\ 205 _bs == SHA1_DIGEST_SIZE ? 12 : 0; }) 206 207 #define FILL_PLD_SIZE_HASH_SIZE(payload_sgl_len, sgl_lengths, total_frags) \ 208 htonl(FW_CRYPTO_LOOKASIDE_WR_PLD_SIZE_V(payload_sgl_len ? \ 209 sgl_lengths[total_frags] : 0) |\ 210 FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(0)) 211 212 #define FILL_LEN_PKD(calc_tx_flits_ofld, skb) \ 213 htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP((\ 214 calc_tx_flits_ofld(skb) * 8), 16))) 215 216 #define FILL_CMD_MORE(immdatalen) htonl(ULPTX_CMD_V(ULP_TX_SC_IMM) |\ 217 ULP_TX_SC_MORE_V((immdatalen))) 218 #define MAX_NK 8 219 #define ROUND_16(bytes) ((bytes) & 0xFFFFFFF0) 220 #define MAX_DSGL_ENT 32 221 #define MIN_CIPHER_SG 1 /* IV */ 222 #define MIN_AUTH_SG 1 /* IV */ 223 #define MIN_GCM_SG 1 /* IV */ 224 #define MIN_DIGEST_SG 1 /*Partial Buffer*/ 225 #define MIN_CCM_SG 2 /*IV+B0*/ 226 #define SPACE_LEFT(len) \ 227 ((SGE_MAX_WR_LEN - WR_MIN_LEN - (len))) 228 229 struct algo_param { 230 unsigned int auth_mode; 231 unsigned int mk_size; 232 unsigned int result_size; 233 }; 234 235 struct hash_wr_param { 236 unsigned int opad_needed; 237 unsigned int more; 238 unsigned int last; 239 struct algo_param alg_prm; 240 unsigned int sg_len; 241 unsigned int bfr_len; 242 u64 scmd1; 243 }; 244 245 struct cipher_wr_param { 246 struct ablkcipher_request *req; 247 char *iv; 248 int bytes; 249 unsigned short qid; 250 }; 251 enum { 252 AES_KEYLENGTH_128BIT = 128, 253 AES_KEYLENGTH_192BIT = 192, 254 AES_KEYLENGTH_256BIT = 256 255 }; 256 257 enum { 258 KEYLENGTH_3BYTES = 3, 259 KEYLENGTH_4BYTES = 4, 260 KEYLENGTH_6BYTES = 6, 261 KEYLENGTH_8BYTES = 8 262 }; 263 264 enum { 265 NUMBER_OF_ROUNDS_10 = 10, 266 NUMBER_OF_ROUNDS_12 = 12, 267 NUMBER_OF_ROUNDS_14 = 14, 268 }; 269 270 /* 271 * CCM defines values of 4, 6, 8, 10, 12, 14, and 16 octets, 272 * where they indicate the size of the integrity check value (ICV) 273 */ 274 enum { 275 ICV_4 = 4, 276 ICV_6 = 6, 277 ICV_8 = 8, 278 ICV_10 = 10, 279 ICV_12 = 12, 280 ICV_13 = 13, 281 ICV_14 = 14, 282 ICV_15 = 15, 283 ICV_16 = 16 284 }; 285 286 struct phys_sge_pairs { 287 __be16 len[8]; 288 __be64 addr[8]; 289 }; 290 291 292 static const u32 sha1_init[SHA1_DIGEST_SIZE / 4] = { 293 SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4, 294 }; 295 296 static const u32 sha224_init[SHA256_DIGEST_SIZE / 4] = { 297 SHA224_H0, SHA224_H1, SHA224_H2, SHA224_H3, 298 SHA224_H4, SHA224_H5, SHA224_H6, SHA224_H7, 299 }; 300 301 static const u32 sha256_init[SHA256_DIGEST_SIZE / 4] = { 302 SHA256_H0, SHA256_H1, SHA256_H2, SHA256_H3, 303 SHA256_H4, SHA256_H5, SHA256_H6, SHA256_H7, 304 }; 305 306 static const u64 sha384_init[SHA512_DIGEST_SIZE / 8] = { 307 SHA384_H0, SHA384_H1, SHA384_H2, SHA384_H3, 308 SHA384_H4, SHA384_H5, SHA384_H6, SHA384_H7, 309 }; 310 311 static const u64 sha512_init[SHA512_DIGEST_SIZE / 8] = { 312 SHA512_H0, SHA512_H1, SHA512_H2, SHA512_H3, 313 SHA512_H4, SHA512_H5, SHA512_H6, SHA512_H7, 314 }; 315 316 static inline void copy_hash_init_values(char *key, int digestsize) 317 { 318 u8 i; 319 __be32 *dkey = (__be32 *)key; 320 u64 *ldkey = (u64 *)key; 321 __be64 *sha384 = (__be64 *)sha384_init; 322 __be64 *sha512 = (__be64 *)sha512_init; 323 324 switch (digestsize) { 325 case SHA1_DIGEST_SIZE: 326 for (i = 0; i < SHA1_INIT_STATE; i++) 327 dkey[i] = cpu_to_be32(sha1_init[i]); 328 break; 329 case SHA224_DIGEST_SIZE: 330 for (i = 0; i < SHA224_INIT_STATE; i++) 331 dkey[i] = cpu_to_be32(sha224_init[i]); 332 break; 333 case SHA256_DIGEST_SIZE: 334 for (i = 0; i < SHA256_INIT_STATE; i++) 335 dkey[i] = cpu_to_be32(sha256_init[i]); 336 break; 337 case SHA384_DIGEST_SIZE: 338 for (i = 0; i < SHA384_INIT_STATE; i++) 339 ldkey[i] = be64_to_cpu(sha384[i]); 340 break; 341 case SHA512_DIGEST_SIZE: 342 for (i = 0; i < SHA512_INIT_STATE; i++) 343 ldkey[i] = be64_to_cpu(sha512[i]); 344 break; 345 } 346 } 347 348 static const u8 sgl_lengths[20] = { 349 0, 1, 2, 3, 4, 4, 5, 6, 7, 7, 8, 9, 10, 10, 11, 12, 13, 13, 14, 15 350 }; 351 352 /* Number of len fields(8) * size of one addr field */ 353 #define PHYSDSGL_MAX_LEN_SIZE 16 354 355 static inline u16 get_space_for_phys_dsgl(unsigned int sgl_entr) 356 { 357 /* len field size + addr field size */ 358 return ((sgl_entr >> 3) + ((sgl_entr % 8) ? 359 1 : 0)) * PHYSDSGL_MAX_LEN_SIZE + 360 (sgl_entr << 3) + ((sgl_entr % 2 ? 1 : 0) << 3); 361 } 362 363 /* The AES s-transform matrix (s-box). */ 364 static const u8 aes_sbox[256] = { 365 99, 124, 119, 123, 242, 107, 111, 197, 48, 1, 103, 43, 254, 215, 366 171, 118, 202, 130, 201, 125, 250, 89, 71, 240, 173, 212, 162, 175, 367 156, 164, 114, 192, 183, 253, 147, 38, 54, 63, 247, 204, 52, 165, 368 229, 241, 113, 216, 49, 21, 4, 199, 35, 195, 24, 150, 5, 154, 7, 369 18, 128, 226, 235, 39, 178, 117, 9, 131, 44, 26, 27, 110, 90, 370 160, 82, 59, 214, 179, 41, 227, 47, 132, 83, 209, 0, 237, 32, 371 252, 177, 91, 106, 203, 190, 57, 74, 76, 88, 207, 208, 239, 170, 372 251, 67, 77, 51, 133, 69, 249, 2, 127, 80, 60, 159, 168, 81, 373 163, 64, 143, 146, 157, 56, 245, 188, 182, 218, 33, 16, 255, 243, 374 210, 205, 12, 19, 236, 95, 151, 68, 23, 196, 167, 126, 61, 100, 375 93, 25, 115, 96, 129, 79, 220, 34, 42, 144, 136, 70, 238, 184, 376 20, 222, 94, 11, 219, 224, 50, 58, 10, 73, 6, 36, 92, 194, 377 211, 172, 98, 145, 149, 228, 121, 231, 200, 55, 109, 141, 213, 78, 378 169, 108, 86, 244, 234, 101, 122, 174, 8, 186, 120, 37, 46, 28, 166, 379 180, 198, 232, 221, 116, 31, 75, 189, 139, 138, 112, 62, 181, 102, 380 72, 3, 246, 14, 97, 53, 87, 185, 134, 193, 29, 158, 225, 248, 381 152, 17, 105, 217, 142, 148, 155, 30, 135, 233, 206, 85, 40, 223, 382 140, 161, 137, 13, 191, 230, 66, 104, 65, 153, 45, 15, 176, 84, 383 187, 22 384 }; 385 386 static inline u32 aes_ks_subword(const u32 w) 387 { 388 u8 bytes[4]; 389 390 *(u32 *)(&bytes[0]) = w; 391 bytes[0] = aes_sbox[bytes[0]]; 392 bytes[1] = aes_sbox[bytes[1]]; 393 bytes[2] = aes_sbox[bytes[2]]; 394 bytes[3] = aes_sbox[bytes[3]]; 395 return *(u32 *)(&bytes[0]); 396 } 397 398 #endif /* __CHCR_ALGO_H__ */ 399