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https://github.com/edk2-porting/linux-next.git
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crypto: cavium - Remove the individual encrypt/decrypt function for each algorithm
Remove the individual encrypt/decrypt function for easch algorithm. This is in prepration of adding more crypto algorithms supported by hardware. While at that simplify create_ctx_hdr/create_input_list function interfaces. Signed-off-by: George Cherian <george.cherian@cavium.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
George Cherian
Herbert Xu
parent
cc53e92ab3
commit
e2eb769ed0
@ -98,7 +98,6 @@ static inline void update_output_data(struct cpt_request_info *req_info,
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}
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static inline u32 create_ctx_hdr(struct ablkcipher_request *req, u32 enc,
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u32 cipher_type, u32 aes_key_type,
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u32 *argcnt)
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{
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struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
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@ -124,11 +123,11 @@ static inline u32 create_ctx_hdr(struct ablkcipher_request *req, u32 enc,
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req_info->req.param1 = req->nbytes; /* Encryption Data length */
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req_info->req.param2 = 0; /*Auth data length */
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fctx->enc.enc_ctrl.e.enc_cipher = cipher_type;
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fctx->enc.enc_ctrl.e.aes_key = aes_key_type;
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fctx->enc.enc_ctrl.e.enc_cipher = ctx->cipher_type;
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fctx->enc.enc_ctrl.e.aes_key = ctx->key_type;
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fctx->enc.enc_ctrl.e.iv_source = FROM_DPTR;
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if (cipher_type == AES_XTS)
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if (ctx->cipher_type == AES_XTS)
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memcpy(fctx->enc.encr_key, ctx->enc_key, ctx->key_len * 2);
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else
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memcpy(fctx->enc.encr_key, ctx->enc_key, ctx->key_len);
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@ -154,14 +153,13 @@ static inline u32 create_ctx_hdr(struct ablkcipher_request *req, u32 enc,
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}
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static inline u32 create_input_list(struct ablkcipher_request *req, u32 enc,
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u32 cipher_type, u32 aes_key_type,
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u32 enc_iv_len)
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{
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struct cvm_req_ctx *rctx = ablkcipher_request_ctx(req);
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struct cpt_request_info *req_info = &rctx->cpt_req;
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u32 argcnt = 0;
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create_ctx_hdr(req, enc, cipher_type, aes_key_type, &argcnt);
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create_ctx_hdr(req, enc, &argcnt);
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update_input_iv(req_info, req->info, enc_iv_len, &argcnt);
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update_input_data(req_info, req->src, req->nbytes, &argcnt);
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req_info->incnt = argcnt;
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@ -177,7 +175,6 @@ static inline void store_cb_info(struct ablkcipher_request *req,
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}
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static inline void create_output_list(struct ablkcipher_request *req,
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u32 cipher_type,
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u32 enc_iv_len)
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{
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struct cvm_req_ctx *rctx = ablkcipher_request_ctx(req);
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@ -197,12 +194,9 @@ static inline void create_output_list(struct ablkcipher_request *req,
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req_info->outcnt = argcnt;
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}
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static inline int cvm_enc_dec(struct ablkcipher_request *req, u32 enc,
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u32 cipher_type)
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static inline int cvm_enc_dec(struct ablkcipher_request *req, u32 enc)
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{
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struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
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struct cvm_enc_ctx *ctx = crypto_ablkcipher_ctx(tfm);
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u32 key_type = AES_128_BIT;
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struct cvm_req_ctx *rctx = ablkcipher_request_ctx(req);
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u32 enc_iv_len = crypto_ablkcipher_ivsize(tfm);
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struct fc_context *fctx = &rctx->fctx;
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@ -210,36 +204,10 @@ static inline int cvm_enc_dec(struct ablkcipher_request *req, u32 enc,
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void *cdev = NULL;
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int status;
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switch (ctx->key_len) {
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case 16:
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key_type = AES_128_BIT;
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break;
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case 24:
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key_type = AES_192_BIT;
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break;
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case 32:
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if (cipher_type == AES_XTS)
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key_type = AES_128_BIT;
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else
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key_type = AES_256_BIT;
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break;
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case 64:
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if (cipher_type == AES_XTS)
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key_type = AES_256_BIT;
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else
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return -EINVAL;
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break;
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default:
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return -EINVAL;
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}
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if (cipher_type == DES3_CBC)
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key_type = 0;
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memset(req_info, 0, sizeof(struct cpt_request_info));
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memset(fctx, 0, sizeof(struct fc_context));
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create_input_list(req, enc, cipher_type, key_type, enc_iv_len);
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create_output_list(req, cipher_type, enc_iv_len);
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create_input_list(req, enc, enc_iv_len);
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create_output_list(req, enc_iv_len);
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store_cb_info(req, req_info);
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cdev = dev_handle.cdev[smp_processor_id()];
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status = cptvf_do_request(cdev, req_info);
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@ -254,34 +222,14 @@ static inline int cvm_enc_dec(struct ablkcipher_request *req, u32 enc,
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return -EINPROGRESS;
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}
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int cvm_des3_encrypt_cbc(struct ablkcipher_request *req)
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int cvm_encrypt(struct ablkcipher_request *req)
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{
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return cvm_enc_dec(req, true, DES3_CBC);
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return cvm_enc_dec(req, true);
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}
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int cvm_des3_decrypt_cbc(struct ablkcipher_request *req)
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int cvm_decrypt(struct ablkcipher_request *req)
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{
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return cvm_enc_dec(req, false, DES3_CBC);
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}
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int cvm_aes_encrypt_xts(struct ablkcipher_request *req)
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{
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return cvm_enc_dec(req, true, AES_XTS);
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}
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int cvm_aes_decrypt_xts(struct ablkcipher_request *req)
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{
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return cvm_enc_dec(req, false, AES_XTS);
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}
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int cvm_aes_encrypt_cbc(struct ablkcipher_request *req)
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{
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return cvm_enc_dec(req, true, AES_CBC);
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}
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int cvm_aes_decrypt_cbc(struct ablkcipher_request *req)
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{
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return cvm_enc_dec(req, false, AES_CBC);
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return cvm_enc_dec(req, false);
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}
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int cvm_xts_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
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@ -299,24 +247,75 @@ int cvm_xts_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
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ctx->key_len = keylen;
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memcpy(ctx->enc_key, key1, keylen / 2);
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memcpy(ctx->enc_key + KEY2_OFFSET, key2, keylen / 2);
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ctx->cipher_type = AES_XTS;
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switch (ctx->key_len) {
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case 32:
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ctx->key_type = AES_128_BIT;
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break;
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case 64:
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ctx->key_type = AES_256_BIT;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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int cvm_enc_dec_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
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u32 keylen)
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static int cvm_validate_keylen(struct cvm_enc_ctx *ctx, u32 keylen)
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{
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if ((keylen == 16) || (keylen == 24) || (keylen == 32)) {
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ctx->key_len = keylen;
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switch (ctx->key_len) {
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case 16:
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ctx->key_type = AES_128_BIT;
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break;
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case 24:
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ctx->key_type = AES_192_BIT;
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break;
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case 32:
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ctx->key_type = AES_256_BIT;
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break;
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default:
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return -EINVAL;
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}
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if (ctx->cipher_type == DES3_CBC)
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ctx->key_type = 0;
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return 0;
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}
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return -EINVAL;
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}
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static int cvm_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
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u32 keylen, u8 cipher_type)
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{
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struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
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struct cvm_enc_ctx *ctx = crypto_tfm_ctx(tfm);
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if ((keylen == 16) || (keylen == 24) || (keylen == 32)) {
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ctx->key_len = keylen;
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ctx->cipher_type = cipher_type;
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if (!cvm_validate_keylen(ctx, keylen)) {
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memcpy(ctx->enc_key, key, keylen);
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return 0;
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}
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crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
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} else {
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crypto_ablkcipher_set_flags(cipher,
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CRYPTO_TFM_RES_BAD_KEY_LEN);
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return -EINVAL;
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}
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}
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static int cvm_cbc_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
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u32 keylen)
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{
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return cvm_setkey(cipher, key, keylen, AES_CBC);
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}
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static int cvm_cbc_des3_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
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u32 keylen)
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{
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return cvm_setkey(cipher, key, keylen, DES3_CBC);
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}
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int cvm_enc_dec_init(struct crypto_tfm *tfm)
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@ -349,8 +348,8 @@ struct crypto_alg algs[] = { {
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.min_keysize = 2 * AES_MIN_KEY_SIZE,
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.max_keysize = 2 * AES_MAX_KEY_SIZE,
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.setkey = cvm_xts_setkey,
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.encrypt = cvm_aes_encrypt_xts,
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.decrypt = cvm_aes_decrypt_xts,
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.encrypt = cvm_encrypt,
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.decrypt = cvm_decrypt,
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},
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},
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.cra_init = cvm_enc_dec_init,
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@ -369,9 +368,9 @@ struct crypto_alg algs[] = { {
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.ivsize = AES_BLOCK_SIZE,
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.setkey = cvm_enc_dec_setkey,
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.encrypt = cvm_aes_encrypt_cbc,
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.decrypt = cvm_aes_decrypt_cbc,
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.setkey = cvm_cbc_aes_setkey,
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.encrypt = cvm_encrypt,
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.decrypt = cvm_decrypt,
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},
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},
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.cra_init = cvm_enc_dec_init,
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@ -390,9 +389,9 @@ struct crypto_alg algs[] = { {
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.min_keysize = DES3_EDE_KEY_SIZE,
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.max_keysize = DES3_EDE_KEY_SIZE,
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.ivsize = DES_BLOCK_SIZE,
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.setkey = cvm_enc_dec_setkey,
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.encrypt = cvm_des3_encrypt_cbc,
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.decrypt = cvm_des3_decrypt_cbc,
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.setkey = cvm_cbc_des3_setkey,
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.encrypt = cvm_encrypt,
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.decrypt = cvm_decrypt,
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},
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},
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.cra_init = cvm_enc_dec_init,
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@ -77,6 +77,11 @@ union encr_ctrl {
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} e;
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};
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struct cvm_cipher {
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const char *name;
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u8 value;
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};
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struct enc_context {
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union encr_ctrl enc_ctrl;
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u8 encr_key[32];
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@ -96,6 +101,8 @@ struct fc_context {
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struct cvm_enc_ctx {
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u32 key_len;
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u8 enc_key[MAX_KEY_SIZE];
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u8 cipher_type:4;
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u8 key_type:2;
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};
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struct cvm_des3_ctx {
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