From patchwork Sat Dec 21 09:10:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 852977 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ED7021F2361 for ; Sat, 21 Dec 2024 09:11:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734772294; cv=none; b=Ydngat96nN5RwbofFjProG7S6ZEhnRs/cEf14q8vjbQ0X+Uw7zy006P1XxIgQ8ES5crYBHhViu1Iag+HyFYoSXfjQEnFyamDr4yP8DH5yGx3BxJN7qyU7Z/5VujnI8c1wsX4LGdKsbeSsBYfpNNagMqQsK9qI6Z4GK7HpMZ5TeQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734772294; c=relaxed/simple; bh=gTqiJ83GC+y9ntGuuGLBowL4XoaSaAg3tom8EPVefuE=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RmwJyuMtdjvMoR1ph75EscdoNM7HUsP4HlrFnjSkVwh5iAFAd2ULLiSG1RjHI5InARddFXSiUidDT44UmGzlbNOnHktGo2W4ktjpS0/DFYkwRHqTXdcGf8ocPy672kWSga9AZRgR9UGMrb+AwfFGlm7/CxWtFuF0m2iHMkgCw5g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Y8Id6Zul; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Y8Id6Zul" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C603AC4CEDD for ; Sat, 21 Dec 2024 09:11:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1734772293; bh=gTqiJ83GC+y9ntGuuGLBowL4XoaSaAg3tom8EPVefuE=; h=From:To:Subject:Date:In-Reply-To:References:From; b=Y8Id6Zulh0YG6d8I5noG2Nw/d2ppYHV4Qm8IoRNMsNfL0jFy7+SeZdFA+/cBC//Ab E2oanVBd6Ame730CCC6/Py8eDgNy2hLKPKAAupynslHTQGpAO+XmuUb9rbIFwK8Q7r aXLV2mZFZK0nOD2SOnCPpmvPlIgPLW3VpjKvd2DYmYELlpySs/OozpKhFcEwb/zYtW 9U3jF/p8rtMwF2H7BIkTvGeAJRkZmcYarxHhy0gRjsB0uiEk6okavzaXUd3Nim423T Fv0fJ2kDoGTAedZzj2CTcg5o/S3Ro881PD1cZ+sohw2JhDpVg3M+cruAB0rYeze9D4 lqcUbLRpEKJgA== From: Eric Biggers To: linux-crypto@vger.kernel.org Subject: [PATCH 15/29] crypto: skcipher - use scatterwalk_start_at_pos() Date: Sat, 21 Dec 2024 01:10:42 -0800 Message-ID: <20241221091056.282098-16-ebiggers@kernel.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241221091056.282098-1-ebiggers@kernel.org> References: <20241221091056.282098-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Eric Biggers 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 --- crypto/skcipher.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/crypto/skcipher.c b/crypto/skcipher.c index 441e1d254d36..7abafe385fd5 100644 --- a/crypto/skcipher.c +++ b/crypto/skcipher.c @@ -355,18 +355,12 @@ 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); walk->blocksize = alg->base.cra_blocksize; walk->stride = alg->chunksize; walk->ivsize = alg->ivsize; walk->alignmask = alg->base.cra_alignmask;