From b9f76dddb1f9f70e008b982381bbc9a67c9b8c66 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Thu, 2 Jan 2020 19:58:45 -0800 Subject: crypto: skcipher - pass instance to crypto_grab_skcipher() Initializing a crypto_skcipher_spawn currently requires: 1. Set spawn->base.inst to point to the instance. 2. Call crypto_grab_skcipher(). But there's no reason for these steps to be separate, and in fact this unneeded complication has caused at least one bug, the one fixed by commit 6db43410179b ("crypto: adiantum - initialize crypto_spawn::inst") So just make crypto_grab_skcipher() take the instance as an argument. To keep the function calls from getting too unwieldy due to this extra argument, also introduce a 'mask' variable into the affected places which weren't already using one. Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu --- crypto/gcm.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) (limited to 'crypto/gcm.c') diff --git a/crypto/gcm.c b/crypto/gcm.c index 7041cb1b6fd5..887f472734b6 100644 --- a/crypto/gcm.c +++ b/crypto/gcm.c @@ -580,6 +580,7 @@ static int crypto_gcm_create_common(struct crypto_template *tmpl, const char *ghash_name) { struct crypto_attr_type *algt; + u32 mask; struct aead_instance *inst; struct skcipher_alg *ctr; struct crypto_alg *ghash_alg; @@ -594,11 +595,11 @@ static int crypto_gcm_create_common(struct crypto_template *tmpl, if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask) return -EINVAL; + mask = crypto_requires_sync(algt->type, algt->mask); + ghash_alg = crypto_find_alg(ghash_name, &crypto_ahash_type, CRYPTO_ALG_TYPE_HASH, - CRYPTO_ALG_TYPE_AHASH_MASK | - crypto_requires_sync(algt->type, - algt->mask)); + CRYPTO_ALG_TYPE_AHASH_MASK | mask); if (IS_ERR(ghash_alg)) return PTR_ERR(ghash_alg); @@ -620,10 +621,8 @@ static int crypto_gcm_create_common(struct crypto_template *tmpl, ghash->digestsize != 16) goto err_drop_ghash; - crypto_set_skcipher_spawn(&ctx->ctr, aead_crypto_instance(inst)); - err = crypto_grab_skcipher(&ctx->ctr, ctr_name, 0, - crypto_requires_sync(algt->type, - algt->mask)); + err = crypto_grab_skcipher(&ctx->ctr, aead_crypto_instance(inst), + ctr_name, 0, mask); if (err) goto err_drop_ghash; -- cgit v1.2.3