From patchwork Thu Aug 20 06:34:58 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joonsoo Kim X-Patchwork-Id: 7041021 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 55C7DC05AC for ; Thu, 20 Aug 2015 06:37:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 791C82053B for ; Thu, 20 Aug 2015 06:37:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9AA1A2053D for ; Thu, 20 Aug 2015 06:37:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751156AbbHTGht (ORCPT ); Thu, 20 Aug 2015 02:37:49 -0400 Received: from mail-pd0-f179.google.com ([209.85.192.179]:32881 "EHLO mail-pd0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751161AbbHTGf3 (ORCPT ); Thu, 20 Aug 2015 02:35:29 -0400 Received: by pdrh1 with SMTP id h1so10791344pdr.0; Wed, 19 Aug 2015 23:35:28 -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=GWM2TNKxhQU+7N4S33+PQOYoPUvx6DDEvZDRde7Xg/o=; b=hRjVTq+yd+1Bs68K07H/gmSSYhrs79GtkwlC4UPU5QSaRx4UPTlKdohOvdeNNOIKmb LxdqFZbiyfN+OE6T4cOGHAjDW502vUH1eCFGvXtyOyklsHlErPV6CyB67454aCi62AqZ PMTBlr9HsLf4OavGGJxja30Ow0fmluMOL/CKPIQsYPVf1Hdyavuf1hKBVYuvWHCBdBlx Uyj7HDxmg8s5I4nKXZUtAL6oqsq9r05Dq5xLPMwhvcub7ymfiWwpP+c8lFSSTbg4yG04 nb60XCir0lUQfTzjMEsmHd1c7R/WWVS71oe/4C6RLGaufMeMbSojJJUUT7ElwXT0QD3N kb4Q== X-Received: by 10.70.126.100 with SMTP id mx4mr3278848pdb.153.1440052528711; Wed, 19 Aug 2015 23:35:28 -0700 (PDT) Received: from localhost.localdomain ([119.69.155.222]) by smtp.gmail.com with ESMTPSA id v6sm3023378pdp.18.2015.08.19.23.35.23 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 19 Aug 2015 23:35:28 -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 v2 2/8] crypto/lzo: support decompress_noctx Date: Thu, 20 Aug 2015 15:34:58 +0900 Message-Id: <1440052504-15442-3-git-send-email-iamjoonsoo.kim@lge.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1440052504-15442-1-git-send-email-iamjoonsoo.kim@lge.com> References: <1440052504-15442-1-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=-7.4 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, 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 lzo'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/lzo.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/crypto/lzo.c b/crypto/lzo.c index 9ca516b..f1844dd 100644 --- a/crypto/lzo.c +++ b/crypto/lzo.c @@ -80,6 +80,22 @@ static int lzo_decompress(struct crypto_tfm *tfm, const u8 *src, } +static int lzo_decompress_noctx(const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen) +{ + int err; + size_t tmp_len = *dlen; /* size_t(ulong) <-> uint on 64 bit */ + + err = lzo1x_decompress_safe(src, slen, dst, &tmp_len); + + if (err != LZO_E_OK) + return -EINVAL; + + *dlen = tmp_len; + return 0; + +} + static struct crypto_alg alg = { .cra_name = "lzo", .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, @@ -91,7 +107,7 @@ static struct crypto_alg alg = { .coa_compress = lzo_compress, .coa_decompress = lzo_decompress, .coa_compress_noctx = NULL, - .coa_decompress_noctx = NULL } } + .coa_decompress_noctx = lzo_decompress_noctx } } }; static int __init lzo_mod_init(void)