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[CRYPTO] geode: do not copy the IV too often

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There is no reason to keep the IV in the private structre. Instead keep
just a pointer to make the patch smaller :)
This also remove a few memcpy()s

Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Sebastian Siewior 2007-11-30 16:36:57 +11:00 committed by Herbert Xu
parent 9617d6ef62
commit d2456c6623
2 changed files with 3 additions and 5 deletions
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6
drivers/crypto/geode-aes.c
View File

@ -315,7 +315,7 @@ geode_cbc_decrypt(struct blkcipher_desc *desc,
blkcipher_walk_init(&walk, dst, src, nbytes); blkcipher_walk_init(&walk, dst, src, nbytes);
err = blkcipher_walk_virt(desc, &walk); err = blkcipher_walk_virt(desc, &walk);
memcpy(op->iv, walk.iv, AES_IV_LENGTH); op->iv = walk.iv;
while((nbytes = walk.nbytes)) { while((nbytes = walk.nbytes)) {
op->src = walk.src.virt.addr, op->src = walk.src.virt.addr,
@ -330,7 +330,6 @@ geode_cbc_decrypt(struct blkcipher_desc *desc,
err = blkcipher_walk_done(desc, &walk, nbytes); err = blkcipher_walk_done(desc, &walk, nbytes);
} }
memcpy(walk.iv, op->iv, AES_IV_LENGTH);
return err; return err;
} }
@ -348,7 +347,7 @@ geode_cbc_encrypt(struct blkcipher_desc *desc,
blkcipher_walk_init(&walk, dst, src, nbytes); blkcipher_walk_init(&walk, dst, src, nbytes);
err = blkcipher_walk_virt(desc, &walk); err = blkcipher_walk_virt(desc, &walk);
memcpy(op->iv, walk.iv, AES_IV_LENGTH); op->iv = walk.iv;
while((nbytes = walk.nbytes)) { while((nbytes = walk.nbytes)) {
op->src = walk.src.virt.addr, op->src = walk.src.virt.addr,
@ -362,7 +361,6 @@ geode_cbc_encrypt(struct blkcipher_desc *desc,
err = blkcipher_walk_done(desc, &walk, nbytes); err = blkcipher_walk_done(desc, &walk, nbytes);
} }
memcpy(walk.iv, op->iv, AES_IV_LENGTH);
return err; return err;
} }

2
drivers/crypto/geode-aes.h
View File

@ -65,7 +65,7 @@ struct geode_aes_op {
int len; int len;
u8 key[AES_KEY_LENGTH]; u8 key[AES_KEY_LENGTH];
u8 iv[AES_IV_LENGTH]; u8 *iv;
union { union {
struct crypto_blkcipher *blk; struct crypto_blkcipher *blk;