diff options
| -rw-r--r-- | drivers/crypto/cavium/cpt/cptvf_algs.c | 153 | ||||
| -rw-r--r-- | drivers/crypto/cavium/cpt/cptvf_algs.h | 7 |
2 files changed, 83 insertions, 77 deletions
diff --git a/drivers/crypto/cavium/cpt/cptvf_algs.c b/drivers/crypto/cavium/cpt/cptvf_algs.c index cc853f913d4b..443c3623d3be 100644 --- a/drivers/crypto/cavium/cpt/cptvf_algs.c +++ b/drivers/crypto/cavium/cpt/cptvf_algs.c @@ -98,7 +98,6 @@ static inline void update_output_data(struct cpt_request_info *req_info, } static inline u32 create_ctx_hdr(struct ablkcipher_request *req, u32 enc, - u32 cipher_type, u32 aes_key_type, u32 *argcnt) { struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); @@ -124,11 +123,11 @@ static inline u32 create_ctx_hdr(struct ablkcipher_request *req, u32 enc, req_info->req.param1 = req->nbytes; /* Encryption Data length */ req_info->req.param2 = 0; /*Auth data length */ - fctx->enc.enc_ctrl.e.enc_cipher = cipher_type; - fctx->enc.enc_ctrl.e.aes_key = aes_key_type; + fctx->enc.enc_ctrl.e.enc_cipher = ctx->cipher_type; + fctx->enc.enc_ctrl.e.aes_key = ctx->key_type; fctx->enc.enc_ctrl.e.iv_source = FROM_DPTR; - if (cipher_type == AES_XTS) + if (ctx->cipher_type == AES_XTS) memcpy(fctx->enc.encr_key, ctx->enc_key, ctx->key_len * 2); else memcpy(fctx->enc.encr_key, ctx->enc_key, ctx->key_len); @@ -154,14 +153,13 @@ static inline u32 create_ctx_hdr(struct ablkcipher_request *req, u32 enc, } static inline u32 create_input_list(struct ablkcipher_request *req, u32 enc, - u32 cipher_type, u32 aes_key_type, u32 enc_iv_len) { struct cvm_req_ctx *rctx = ablkcipher_request_ctx(req); struct cpt_request_info *req_info = &rctx->cpt_req; u32 argcnt = 0; - create_ctx_hdr(req, enc, cipher_type, aes_key_type, &argcnt); + create_ctx_hdr(req, enc, &argcnt); update_input_iv(req_info, req->info, enc_iv_len, &argcnt); update_input_data(req_info, req->src, req->nbytes, &argcnt); req_info->incnt = argcnt; @@ -177,7 +175,6 @@ static inline void store_cb_info(struct ablkcipher_request *req, } static inline void create_output_list(struct ablkcipher_request *req, - u32 cipher_type, u32 enc_iv_len) { struct cvm_req_ctx *rctx = ablkcipher_request_ctx(req); @@ -197,12 +194,9 @@ static inline void create_output_list(struct ablkcipher_request *req, req_info->outcnt = argcnt; } -static inline int cvm_enc_dec(struct ablkcipher_request *req, u32 enc, - u32 cipher_type) +static inline int cvm_enc_dec(struct ablkcipher_request *req, u32 enc) { struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct cvm_enc_ctx *ctx = crypto_ablkcipher_ctx(tfm); - u32 key_type = AES_128_BIT; struct cvm_req_ctx *rctx = ablkcipher_request_ctx(req); u32 enc_iv_len = crypto_ablkcipher_ivsize(tfm); struct fc_context *fctx = &rctx->fctx; @@ -210,36 +204,10 @@ static inline int cvm_enc_dec(struct ablkcipher_request *req, u32 enc, void *cdev = NULL; int status; - switch (ctx->key_len) { - case 16: - key_type = AES_128_BIT; - break; - case 24: - key_type = AES_192_BIT; - break; - case 32: - if (cipher_type == AES_XTS) - key_type = AES_128_BIT; - else - key_type = AES_256_BIT; - break; - case 64: - if (cipher_type == AES_XTS) - key_type = AES_256_BIT; - else - return -EINVAL; - break; - default: - return -EINVAL; - } - - if (cipher_type == DES3_CBC) - key_type = 0; - memset(req_info, 0, sizeof(struct cpt_request_info)); memset(fctx, 0, sizeof(struct fc_context)); - create_input_list(req, enc, cipher_type, key_type, enc_iv_len); - create_output_list(req, cipher_type, enc_iv_len); + create_input_list(req, enc, enc_iv_len); + create_output_list(req, enc_iv_len); store_cb_info(req, req_info); cdev = dev_handle.cdev[smp_processor_id()]; status = cptvf_do_request(cdev, req_info); @@ -254,34 +222,14 @@ static inline int cvm_enc_dec(struct ablkcipher_request *req, u32 enc, return -EINPROGRESS; } -int cvm_des3_encrypt_cbc(struct ablkcipher_request *req) +int cvm_encrypt(struct ablkcipher_request *req) { - return cvm_enc_dec(req, true, DES3_CBC); + return cvm_enc_dec(req, true); } -int cvm_des3_decrypt_cbc(struct ablkcipher_request *req) +int cvm_decrypt(struct ablkcipher_request *req) { - return cvm_enc_dec(req, false, DES3_CBC); -} - -int cvm_aes_encrypt_xts(struct ablkcipher_request *req) -{ - return cvm_enc_dec(req, true, AES_XTS); -} - -int cvm_aes_decrypt_xts(struct ablkcipher_request *req) -{ - return cvm_enc_dec(req, false, AES_XTS); -} - -int cvm_aes_encrypt_cbc(struct ablkcipher_request *req) -{ - return cvm_enc_dec(req, true, AES_CBC); -} - -int cvm_aes_decrypt_cbc(struct ablkcipher_request *req) -{ - return cvm_enc_dec(req, false, AES_CBC); + return cvm_enc_dec(req, false); } int cvm_xts_setkey(struct crypto_ablkcipher *cipher, const u8 *key, @@ -299,24 +247,75 @@ int cvm_xts_setkey(struct crypto_ablkcipher *cipher, const u8 *key, ctx->key_len = keylen; memcpy(ctx->enc_key, key1, keylen / 2); memcpy(ctx->enc_key + KEY2_OFFSET, key2, keylen / 2); + ctx->cipher_type = AES_XTS; + switch (ctx->key_len) { + case 32: + ctx->key_type = AES_128_BIT; + break; + case 64: + ctx->key_type = AES_256_BIT; + break; + default: + return -EINVAL; + } return 0; } -int cvm_enc_dec_setkey(struct crypto_ablkcipher *cipher, const u8 *key, - u32 keylen) +static int cvm_validate_keylen(struct cvm_enc_ctx *ctx, u32 keylen) +{ + if ((keylen == 16) || (keylen == 24) || (keylen == 32)) { + ctx->key_len = keylen; + switch (ctx->key_len) { + case 16: + ctx->key_type = AES_128_BIT; + break; + case 24: + ctx->key_type = AES_192_BIT; + break; + case 32: + ctx->key_type = AES_256_BIT; + break; + default: + return -EINVAL; + } + + if (ctx->cipher_type == DES3_CBC) + ctx->key_type = 0; + + return 0; + } + + return -EINVAL; +} + +static int cvm_setkey(struct crypto_ablkcipher *cipher, const u8 *key, + u32 keylen, u8 cipher_type) { struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); struct cvm_enc_ctx *ctx = crypto_tfm_ctx(tfm); - if ((keylen == 16) || (keylen == 24) || (keylen == 32)) { - ctx->key_len = keylen; + ctx->cipher_type = cipher_type; + if (!cvm_validate_keylen(ctx, keylen)) { memcpy(ctx->enc_key, key, keylen); return 0; + } else { + crypto_ablkcipher_set_flags(cipher, + CRYPTO_TFM_RES_BAD_KEY_LEN); + return -EINVAL; } - crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); +} - return -EINVAL; +static int cvm_cbc_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key, + u32 keylen) +{ + return cvm_setkey(cipher, key, keylen, AES_CBC); +} + +static int cvm_cbc_des3_setkey(struct crypto_ablkcipher *cipher, const u8 *key, + u32 keylen) +{ + return cvm_setkey(cipher, key, keylen, DES3_CBC); } int cvm_enc_dec_init(struct crypto_tfm *tfm) @@ -349,8 +348,8 @@ struct crypto_alg algs[] = { { .min_keysize = 2 * AES_MIN_KEY_SIZE, .max_keysize = 2 * AES_MAX_KEY_SIZE, .setkey = cvm_xts_setkey, - .encrypt = cvm_aes_encrypt_xts, - .decrypt = cvm_aes_decrypt_xts, + .encrypt = cvm_encrypt, + .decrypt = cvm_decrypt, }, }, .cra_init = cvm_enc_dec_init, @@ -369,9 +368,9 @@ struct crypto_alg algs[] = { { .ivsize = AES_BLOCK_SIZE, .min_keysize = AES_MIN_KEY_SIZE, .max_keysize = AES_MAX_KEY_SIZE, - .setkey = cvm_enc_dec_setkey, - .encrypt = cvm_aes_encrypt_cbc, - .decrypt = cvm_aes_decrypt_cbc, + .setkey = cvm_cbc_aes_setkey, + .encrypt = cvm_encrypt, + .decrypt = cvm_decrypt, }, }, .cra_init = cvm_enc_dec_init, @@ -390,9 +389,9 @@ struct crypto_alg algs[] = { { .min_keysize = DES3_EDE_KEY_SIZE, .max_keysize = DES3_EDE_KEY_SIZE, .ivsize = DES_BLOCK_SIZE, - .setkey = cvm_enc_dec_setkey, - .encrypt = cvm_des3_encrypt_cbc, - .decrypt = cvm_des3_decrypt_cbc, + .setkey = cvm_cbc_des3_setkey, + .encrypt = cvm_encrypt, + .decrypt = cvm_decrypt, }, }, .cra_init = cvm_enc_dec_init, diff --git a/drivers/crypto/cavium/cpt/cptvf_algs.h b/drivers/crypto/cavium/cpt/cptvf_algs.h index a12050d11b0c..902f25751123 100644 --- a/drivers/crypto/cavium/cpt/cptvf_algs.h +++ b/drivers/crypto/cavium/cpt/cptvf_algs.h @@ -77,6 +77,11 @@ union encr_ctrl { } e; }; +struct cvm_cipher { + const char *name; + u8 value; +}; + struct enc_context { union encr_ctrl enc_ctrl; u8 encr_key[32]; @@ -96,6 +101,8 @@ struct fc_context { struct cvm_enc_ctx { u32 key_len; u8 enc_key[MAX_KEY_SIZE]; + u8 cipher_type:4; + u8 key_type:2; }; struct cvm_des3_ctx { |