From mboxrd@z Thu Jan 1 00:00:00 1970 From: Antoine Tenart Subject: [PATCH v2 01/10] crypto: inside-secure - remove VLAs Date: Mon, 14 May 2018 15:10:55 +0200 Message-ID: <20180514131104.25552-2-antoine.tenart@bootlin.com> References: <20180514131104.25552-1-antoine.tenart@bootlin.com> Cc: Antoine Tenart , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, maxime.chevallier@bootlin.com, gregory.clement@bootlin.com, miquel.raynal@bootlin.com, nadavh@marvell.com, oferh@marvell.com, igall@marvell.com To: herbert@gondor.apana.org.au, davem@davemloft.net Return-path: In-Reply-To: <20180514131104.25552-1-antoine.tenart@bootlin.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org This patch removes the use of VLAs to allocate requests on the stack, by removing both SKCIPHER_REQUEST_ON_STACK and AHASH_REQUEST_ON_STACK. As we still need to allocate requests on the stack to ease the creation of invalidation requests a new, non-VLA, definition is used: EIP197_REQUEST_ON_STACK. Signed-off-by: Antoine Tenart --- drivers/crypto/inside-secure/safexcel.h | 9 +++++++++ drivers/crypto/inside-secure/safexcel_cipher.c | 2 +- drivers/crypto/inside-secure/safexcel_hash.c | 2 +- 3 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h index b470a849721f..afdd099b2c1a 100644 --- a/drivers/crypto/inside-secure/safexcel.h +++ b/drivers/crypto/inside-secure/safexcel.h @@ -28,6 +28,15 @@ #define EIP197_GFP_FLAGS(base) ((base).flags & CRYPTO_TFM_REQ_MAY_SLEEP ? \ GFP_KERNEL : GFP_ATOMIC) +/* Custom on-stack requests (for invalidation) */ +#define EIP197_SKCIPHER_REQ_SIZE sizeof(struct skcipher_request) + \ + sizeof(struct safexcel_cipher_req) +#define EIP197_AHASH_REQ_SIZE sizeof(struct ahash_request) + \ + sizeof(struct safexcel_ahash_req) +#define EIP197_REQUEST_ON_STACK(name, type, size) \ + char __##name##_desc[size] CRYPTO_MINALIGN_ATTR; \ + struct type##_request *name = (void *)__##name##_desc + /* Register base offsets */ #define EIP197_HIA_AIC(priv) ((priv)->base + (priv)->offsets.hia_aic) #define EIP197_HIA_AIC_G(priv) ((priv)->base + (priv)->offsets.hia_aic_g) diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c index bafb60505fab..9a51da28fb62 100644 --- a/drivers/crypto/inside-secure/safexcel_cipher.c +++ b/drivers/crypto/inside-secure/safexcel_cipher.c @@ -433,7 +433,7 @@ static int safexcel_cipher_exit_inv(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); struct safexcel_crypto_priv *priv = ctx->priv; - SKCIPHER_REQUEST_ON_STACK(req, __crypto_skcipher_cast(tfm)); + EIP197_REQUEST_ON_STACK(req, skcipher, EIP197_SKCIPHER_REQ_SIZE); struct safexcel_cipher_req *sreq = skcipher_request_ctx(req); struct safexcel_inv_result result = {}; int ring = ctx->base.ring; diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c index 317b9e480312..00d2cad0ff1c 100644 --- a/drivers/crypto/inside-secure/safexcel_hash.c +++ b/drivers/crypto/inside-secure/safexcel_hash.c @@ -480,7 +480,7 @@ static int safexcel_ahash_exit_inv(struct crypto_tfm *tfm) { struct safexcel_ahash_ctx *ctx = crypto_tfm_ctx(tfm); struct safexcel_crypto_priv *priv = ctx->priv; - AHASH_REQUEST_ON_STACK(req, __crypto_ahash_cast(tfm)); + EIP197_REQUEST_ON_STACK(req, ahash, EIP197_AHASH_REQ_SIZE); struct safexcel_ahash_req *rctx = ahash_request_ctx(req); struct safexcel_inv_result result = {}; int ring = ctx->base.ring; -- 2.17.0