[PATCH v3 06/19] crypto: skcipher - use scatterwalk_start_at_pos()
From: Eric Biggers <ebiggers@kernel.org>
Date: 2025-02-19 18:24:28
Also in:
linux-crypto, lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
From: Eric Biggers <redacted> In skcipher_walk_aead_common(), use scatterwalk_start_at_pos() instead of a sequence of scatterwalk_start(), scatterwalk_copychunks(..., 2), and scatterwalk_done(). This is simpler and faster. Signed-off-by: Eric Biggers <redacted> --- crypto/skcipher.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/crypto/skcipher.c b/crypto/skcipher.c
index e3751cc88b76e..33508d001f361 100644
--- a/crypto/skcipher.c
+++ b/crypto/skcipher.c@@ -361,18 +361,12 @@ static int skcipher_walk_aead_common(struct skcipher_walk *walk, walk->flags = 0; if (unlikely(!walk->total)) return 0; - scatterwalk_start(&walk->in, req->src); - scatterwalk_start(&walk->out, req->dst); - - scatterwalk_copychunks(NULL, &walk->in, req->assoclen, 2); - scatterwalk_copychunks(NULL, &walk->out, req->assoclen, 2); - - scatterwalk_done(&walk->in, 0, walk->total); - scatterwalk_done(&walk->out, 0, walk->total); + scatterwalk_start_at_pos(&walk->in, req->src, req->assoclen); + scatterwalk_start_at_pos(&walk->out, req->dst, req->assoclen); /* * Accessing 'alg' directly generates better code than using the * crypto_aead_blocksize() and similar helper functions here, as it * prevents the algorithm pointer from being repeatedly reloaded.
--
2.48.1