diff mbox series

[v3,06/19] crypto: skcipher - use scatterwalk_start_at_pos()

Message ID 20250219182341.43961-7-ebiggers@kernel.org (mailing list archive)
State Not Applicable
Headers show
Series crypto: scatterlist handling improvements | expand

Checks

Context Check Description
netdev/series_format fail Series longer than 15 patches
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers fail 1 maintainers not CCed: herbert@gondor.apana.org.au
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 16 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2025-02-20--12-00 (tests: 893)

Commit Message

Eric Biggers Feb. 19, 2025, 6:23 p.m. UTC 
From: Eric Biggers <ebiggers@google.com>

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 <ebiggers@google.com>
---
 crypto/skcipher.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)
diff mbox series

Patch

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.