[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <E1oyQS5-000djv-CO@formenos.hmeau.com>
Date: Fri, 25 Nov 2022 12:36:37 +0800
From: "Herbert Xu" <herbert@...dor.apana.org.au>
To: Ard Biesheuvel <ardb@...nel.org>, Will Deacon <will@...nel.org>,
Marc Zyngier <maz@...nel.org>, Arnd Bergmann <arnd@...db.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Linux Memory Management List <linux-mm@...ck.org>,
Linux ARM <linux-arm-kernel@...ts.infradead.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"David S. Miller" <davem@...emloft.net>,
Linux Crypto Mailing List <linux-crypto@...r.kernel.org>
Subject: [v2 PATCH 5/9] crypto: skcipher - Add ctx helpers with DMA alignment
This patch adds helpers to access the skcipher context structure and
request context structure with an added alignment for DMA access.
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
---
include/crypto/internal/skcipher.h | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/include/crypto/internal/skcipher.h b/include/crypto/internal/skcipher.h
index a2339f80a615..a05a55af5b2c 100644
--- a/include/crypto/internal/skcipher.h
+++ b/include/crypto/internal/skcipher.h
@@ -122,6 +122,13 @@ static inline void crypto_skcipher_set_reqsize(
skcipher->reqsize = reqsize;
}
+static inline void crypto_skcipher_set_reqsize_dma(
+ struct crypto_skcipher *skcipher, unsigned int reqsize)
+{
+ reqsize += crypto_dma_align() & ~(crypto_tfm_ctx_alignment() - 1);
+ skcipher->reqsize = reqsize;
+}
+
int crypto_register_skcipher(struct skcipher_alg *alg);
void crypto_unregister_skcipher(struct skcipher_alg *alg);
int crypto_register_skciphers(struct skcipher_alg *algs, int count);
@@ -151,11 +158,26 @@ static inline void *crypto_skcipher_ctx(struct crypto_skcipher *tfm)
return crypto_tfm_ctx(&tfm->base);
}
+static inline void *crypto_skcipher_ctx_dma(struct crypto_skcipher *tfm)
+{
+ return crypto_tfm_ctx_dma(&tfm->base);
+}
+
static inline void *skcipher_request_ctx(struct skcipher_request *req)
{
return req->__ctx;
}
+static inline void *skcipher_request_ctx_dma(struct skcipher_request *req)
+{
+ unsigned int align = crypto_dma_align();
+
+ if (align <= crypto_tfm_ctx_alignment())
+ align = 1;
+
+ return PTR_ALIGN(skcipher_request_ctx(req), align);
+}
+
static inline u32 skcipher_request_flags(struct skcipher_request *req)
{
return req->base.flags;
Powered by blists - more mailing lists