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- From 8ceda883205db6dfedb82e39f67feae3b50c95a1 Mon Sep 17 00:00:00 2001
- From: Eneas U de Queiroz <[email protected]>
- Date: Fri, 20 Dec 2019 16:02:17 -0300
- Subject: [PATCH 06/11] crypto: qce - initialize fallback only for AES
- Adjust cra_flags to add CRYPTO_NEED_FALLBACK only for AES ciphers, where
- AES-192 is not handled by the qce hardware, and don't allocate & free
- the fallback skcipher for other algorithms.
- Signed-off-by: Eneas U de Queiroz <[email protected]>
- Signed-off-by: Herbert Xu <[email protected]>
- ---
- drivers/crypto/qce/skcipher.c | 17 ++++++++++++++---
- 1 file changed, 14 insertions(+), 3 deletions(-)
- --- a/drivers/crypto/qce/skcipher.c
- +++ b/drivers/crypto/qce/skcipher.c
- @@ -257,7 +257,14 @@ static int qce_skcipher_init(struct cryp
-
- memset(ctx, 0, sizeof(*ctx));
- crypto_skcipher_set_reqsize(tfm, sizeof(struct qce_cipher_reqctx));
- + return 0;
- +}
- +
- +static int qce_skcipher_init_fallback(struct crypto_skcipher *tfm)
- +{
- + struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- + qce_skcipher_init(tfm);
- ctx->fallback = crypto_alloc_sync_skcipher(crypto_tfm_alg_name(&tfm->base),
- 0, CRYPTO_ALG_NEED_FALLBACK);
- return PTR_ERR_OR_ZERO(ctx->fallback);
- @@ -387,14 +394,18 @@ static int qce_skcipher_register_one(con
-
- alg->base.cra_priority = 300;
- alg->base.cra_flags = CRYPTO_ALG_ASYNC |
- - CRYPTO_ALG_NEED_FALLBACK |
- CRYPTO_ALG_KERN_DRIVER_ONLY;
- alg->base.cra_ctxsize = sizeof(struct qce_cipher_ctx);
- alg->base.cra_alignmask = 0;
- alg->base.cra_module = THIS_MODULE;
-
- - alg->init = qce_skcipher_init;
- - alg->exit = qce_skcipher_exit;
- + if (IS_AES(def->flags)) {
- + alg->base.cra_flags |= CRYPTO_ALG_NEED_FALLBACK;
- + alg->init = qce_skcipher_init_fallback;
- + alg->exit = qce_skcipher_exit;
- + } else {
- + alg->init = qce_skcipher_init;
- + }
-
- INIT_LIST_HEAD(&tmpl->entry);
- tmpl->crypto_alg_type = CRYPTO_ALG_TYPE_SKCIPHER;
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