From patchwork Fri Sep 18 05:19:18 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joonsoo Kim X-Patchwork-Id: 7213031 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: X-Original-To: patchwork-linux-crypto@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 887ECBEEC1 for ; Fri, 18 Sep 2015 05:22:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A218B208AD for ; Fri, 18 Sep 2015 05:22:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9640F208AB for ; Fri, 18 Sep 2015 05:22:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751877AbbIRFV5 (ORCPT ); Fri, 18 Sep 2015 01:21:57 -0400 Received: from mail-pa0-f45.google.com ([209.85.220.45]:33483 "EHLO mail-pa0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752165AbbIRFT5 (ORCPT ); Fri, 18 Sep 2015 01:19:57 -0400 Received: by pacex6 with SMTP id ex6so40535168pac.0; Thu, 17 Sep 2015 22:19:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Wfpv5XkFPeznV0efQPAQW4LNbQ3y8IgIe7CUNnF2Q00=; b=GLi2la+czmQLwGNONApy2LK1TdxcWbzeiTd3wORXw3mdwTgKWIKcDg8GSc1KPh9Ljp NcEyQol1vJw4DUd/TGR/kRwlpqaVwNLrwVjp9ZgJn0AF50B0iyb7XVbkEAzwXH4OQCuY BNz3SEEZTaMQQ3E2Skm0FudEjsTf6frZznzd5DJICzLfJrnEeUuC14aC4DOEtyDDBRVl NDJvtjyEUE4faz++LedgbXZWvzN5GBBneCpkm4LALD7W9/pNIcBKcekFhs9xYd3CgMYd kHT2KoZdDi7AiIz9R5pNEGJkKRpTBGO6D+flAygLQb0VkpiZ5jP4lu1AxRlXucUGfWVD +hGA== X-Received: by 10.66.101.39 with SMTP id fd7mr4884313pab.3.1442553597051; Thu, 17 Sep 2015 22:19:57 -0700 (PDT) Received: from localhost.localdomain ([119.69.155.252]) by smtp.gmail.com with ESMTPSA id bi2sm6443526pbb.45.2015.09.17.22.19.53 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 17 Sep 2015 22:19:56 -0700 (PDT) From: Joonsoo Kim X-Google-Original-From: Joonsoo Kim To: Andrew Morton Cc: Minchan Kim , Nitin Gupta , Sergey Senozhatsky , linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, Herbert Xu , "David S. Miller" , Stephan Mueller , Joonsoo Kim Subject: [PATCH v3 3/9] crypyo/lz4: support decompress_noctx Date: Fri, 18 Sep 2015 14:19:18 +0900 Message-Id: <1442553564-3476-4-git-send-email-iamjoonsoo.kim@lge.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1442553564-3476-1-git-send-email-iamjoonsoo.kim@lge.com> References: <1442553564-3476-1-git-send-email-iamjoonsoo.kim@lge.com> Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP lz4's decompression doesn't requires any scratch buffer so it doesn't need tfm context. Hence, it can support crypto compression noctx API and this patch implements it. Signed-off-by: Joonsoo Kim --- crypto/lz4.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/crypto/lz4.c b/crypto/lz4.c index d38ce2a..589fa251 100644 --- a/crypto/lz4.c +++ b/crypto/lz4.c @@ -76,6 +76,12 @@ static int lz4_decompress_crypto(struct crypto_tfm *tfm, const u8 *src, return err; } +static int lz4_decompress_noctx(const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen) +{ + return lz4_decompress_crypto(NULL, src, slen, dst, dlen); +} + static struct crypto_alg alg_lz4 = { .cra_name = "lz4", .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, @@ -87,7 +93,7 @@ static struct crypto_alg alg_lz4 = { .cra_u = { .compress = { .coa_compress = lz4_compress_crypto, .coa_decompress = lz4_decompress_crypto, - .coa_decompress_noctx = NULL } } + .coa_decompress_noctx = lz4_decompress_noctx } } }; static int __init lz4_mod_init(void)