From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752954AbbIRFV6 (ORCPT ); Fri, 18 Sep 2015 01:21:58 -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 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-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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) -- 1.9.1