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crypto: caam - remove needless ablkcipher key copy 

ablkcipher shared descriptors are relatively small, thus there is enough
space for the key to be inlined.
Accordingly, there is no need to copy the key in ctx->key.

Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Horia Geantă 2017-12-19 12:16:05 +02:00 committed by Herbert Xu
parent 6674a4fdc6
commit 662f70ede5
2 changed files with 4 additions and 12 deletions
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8
drivers/crypto/caam/caamalg.c
View File

@ -625,7 +625,6 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
const bool is_rfc3686 = (ctr_mode &&
(strstr(alg_name, "rfc3686") != NULL));
memcpy(ctx->key, key, keylen);
#ifdef DEBUG
print_hex_dump(KERN_ERR, "key in @"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);
@ -648,9 +647,8 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
keylen -= CTR_RFC3686_NONCE_SIZE;
}
dma_sync_single_for_device(jrdev, ctx->key_dma, keylen, DMA_TO_DEVICE);
ctx->cdata.keylen = keylen;
ctx->cdata.key_virt = ctx->key;
ctx->cdata.key_virt = key;
ctx->cdata.key_inline = true;
/* ablkcipher_encrypt shared descriptor */
@ -691,10 +689,8 @@ static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
return -EINVAL;
}
memcpy(ctx->key, key, keylen);
dma_sync_single_for_device(jrdev, ctx->key_dma, keylen, DMA_TO_DEVICE);
ctx->cdata.keylen = keylen;
ctx->cdata.key_virt = ctx->key;
ctx->cdata.key_virt = key;
ctx->cdata.key_inline = true;
/* xts_ablkcipher_encrypt shared descriptor */

8
drivers/crypto/caam/caamalg_qi.c
View File

@ -272,7 +272,6 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
const bool is_rfc3686 = (ctr_mode && strstr(alg_name, "rfc3686"));
int ret = 0;
memcpy(ctx->key, key, keylen);
#ifdef DEBUG
print_hex_dump(KERN_ERR, "key in @" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);
@ -295,9 +294,8 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
keylen -= CTR_RFC3686_NONCE_SIZE;
}
dma_sync_single_for_device(jrdev, ctx->key_dma, keylen, DMA_TO_DEVICE);
ctx->cdata.keylen = keylen;
ctx->cdata.key_virt = ctx->key;
ctx->cdata.key_virt = key;
ctx->cdata.key_inline = true;
/* ablkcipher encrypt, decrypt, givencrypt shared descriptors */
@ -356,10 +354,8 @@ static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
return -EINVAL;
}
memcpy(ctx->key, key, keylen);
dma_sync_single_for_device(jrdev, ctx->key_dma, keylen, DMA_TO_DEVICE);
ctx->cdata.keylen = keylen;
ctx->cdata.key_virt = ctx->key;
ctx->cdata.key_virt = key;
ctx->cdata.key_inline = true;
/* xts ablkcipher encrypt, decrypt shared descriptors */