[PATCH v1 4/8] crypto:chcr- Use cipher instead of Block Cipher in gcm setkey

[Harsh Jain]

1 Block of encrption can be done with aes-generic. no need of
cbc(aes). This patch replaces cbc(aes-generic) with aes-generic.

Signed-off-by: Harsh Jain <ha...@chelsio.com>
---
 drivers/crypto/chelsio/chcr_algo.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/crypto/chelsio/chcr_algo.c 
b/drivers/crypto/chelsio/chcr_algo.c
index 6c2dea3..d335943 100644
--- a/drivers/crypto/chelsio/chcr_algo.c
+++ b/drivers/crypto/chelsio/chcr_algo.c
@@ -2189,8 +2189,7 @@ static int chcr_gcm_setkey(struct crypto_aead *aead, 
const u8 *key,
        struct chcr_context *ctx = crypto_aead_ctx(aead);
        struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
        struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx);
-       struct blkcipher_desc h_desc;
-       struct scatterlist src[1];
+       struct crypto_cipher *cipher;
        unsigned int ck_size;
        int ret = 0, key_ctx_size = 0;
 
@@ -2223,27 +2222,26 @@ static int chcr_gcm_setkey(struct crypto_aead *aead, 
const u8 *key,
                                                CHCR_KEYCTX_MAC_KEY_SIZE_128,
                                                0, 0,
                                                key_ctx_size >> 4);
-       /* Calculate the H = CIPH(K, 0 repeated 16 times) using sync aes
-        * blkcipher It will go on key context
+       /* Calculate the H = CIPH(K, 0 repeated 16 times).
+        * It will go in key context
         */
-       h_desc.tfm = crypto_alloc_blkcipher("cbc(aes-generic)", 0, 0);
-       if (IS_ERR(h_desc.tfm)) {
+       cipher = crypto_alloc_cipher("aes-generic", 0, 0);
+       if (IS_ERR(cipher)) {
                aeadctx->enckey_len = 0;
                ret = -ENOMEM;
                goto out;
        }
-       h_desc.flags = 0;
-       ret = crypto_blkcipher_setkey(h_desc.tfm, key, keylen);
+
+       ret = crypto_cipher_setkey(cipher, key, keylen);
        if (ret) {
                aeadctx->enckey_len = 0;
                goto out1;
        }
        memset(gctx->ghash_h, 0, AEAD_H_SIZE);
-       sg_init_one(&src[0], gctx->ghash_h, AEAD_H_SIZE);
-       ret = crypto_blkcipher_encrypt(&h_desc, &src[0], &src[0], AEAD_H_SIZE);
+       crypto_cipher_encrypt_one(cipher, gctx->ghash_h, gctx->ghash_h);
 
 out1:
-       crypto_free_blkcipher(h_desc.tfm);
+       crypto_free_cipher(cipher);
 out:
        return ret;
 }
-- 
1.8.2.3