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55 lines
1.8 KiB
Diff
55 lines
1.8 KiB
Diff
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From f2a33ce18232919d3831d1c61a06b6067209282d Mon Sep 17 00:00:00 2001
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From: Eneas U de Queiroz <cotequeiroz@gmail.com>
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Date: Fri, 22 Nov 2019 09:34:29 -0300
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Subject: [PATCH] crypto: qce - initialize fallback only for AES
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Adjust cra_flags to add CRYPTO_NEED_FALLBACK only for AES ciphers, where
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AES-192 is not handled by the qce hardware, and don't allocate & free
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the fallback skcipher for anything other than AES.
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The rest of the code is unchanged, as the use of the fallback is already
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restricted to AES.
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Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
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--- a/drivers/crypto/qce/skcipher.c
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+++ b/drivers/crypto/qce/skcipher.c
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@@ -246,7 +246,15 @@ static int qce_skcipher_init(struct cryp
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memset(ctx, 0, sizeof(*ctx));
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crypto_skcipher_set_reqsize(tfm, sizeof(struct qce_cipher_reqctx));
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+ return 0;
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+}
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+
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+static int qce_skcipher_init_fallback(struct crypto_skcipher *tfm)
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+{
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+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);
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+ int ret;
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+ qce_skcipher_init(tfm);
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ctx->fallback = crypto_alloc_skcipher(crypto_tfm_alg_name(&tfm->base),
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0, CRYPTO_ALG_ASYNC |
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CRYPTO_ALG_NEED_FALLBACK);
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@@ -375,14 +383,18 @@ static int qce_skcipher_register_one(con
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alg->base.cra_priority = 300;
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alg->base.cra_flags = CRYPTO_ALG_ASYNC |
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- CRYPTO_ALG_NEED_FALLBACK |
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CRYPTO_ALG_KERN_DRIVER_ONLY;
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alg->base.cra_ctxsize = sizeof(struct qce_cipher_ctx);
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alg->base.cra_alignmask = 0;
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alg->base.cra_module = THIS_MODULE;
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- alg->init = qce_skcipher_init;
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- alg->exit = qce_skcipher_exit;
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+ if (IS_AES(def->flags)) {
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+ alg->base.cra_flags |= CRYPTO_ALG_NEED_FALLBACK;
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+ alg->init = qce_skcipher_init_fallback;
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+ alg->exit = qce_skcipher_exit;
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+ } else {
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+ alg->init = qce_skcipher_init;
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+ }
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INIT_LIST_HEAD(&tmpl->entry);
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tmpl->crypto_alg_type = CRYPTO_ALG_TYPE_SKCIPHER;
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