From patchwork Fri May 10 11:15:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 10938647 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B7CB876 for ; Fri, 10 May 2019 11:16:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A87B728C74 for ; Fri, 10 May 2019 11:16:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9CF2C28C76; Fri, 10 May 2019 11:16:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4E8A428C74 for ; Fri, 10 May 2019 11:16:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727398AbfEJLQD (ORCPT ); Fri, 10 May 2019 07:16:03 -0400 Received: from mx2.suse.de ([195.135.220.15]:50588 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727308AbfEJLPz (ORCPT ); Fri, 10 May 2019 07:15:55 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 6D4ABAFA1 for ; Fri, 10 May 2019 11:15:52 +0000 (UTC) From: Johannes Thumshirn To: David Sterba Cc: Linux BTRFS Mailinglist , Johannes Thumshirn Subject: [PATCH 14/17] btrfs: directly call into crypto framework for checsumming Date: Fri, 10 May 2019 13:15:44 +0200 Message-Id: <20190510111547.15310-15-jthumshirn@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20190510111547.15310-1-jthumshirn@suse.de> References: <20190510111547.15310-1-jthumshirn@suse.de> Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently btrfs_csum_data() relied on the crc32c() wrapper around the crypto framework for calculating the CRCs. As we have our own crypto_shash structure in the fs_info now, we can directly call into the crypto framework without going trough the wrapper. Signed-off-by: Johannes Thumshirn --- fs/btrfs/disk-io.c | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index fb0b06b7b9f6..0c9ac7b45ce8 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -253,12 +253,36 @@ struct extent_map *btree_get_extent(struct btrfs_inode *inode, u32 btrfs_csum_data(struct btrfs_fs_info *fs_info, const char *data, u32 seed, size_t len) { - return crc32c(seed, data, len); + SHASH_DESC_ON_STACK(shash, fs_info->csum_shash); + u32 *ctx = (u32 *)shash_desc_ctx(shash); + u32 retval; + int err; + + shash->tfm = fs_info->csum_shash; + shash->flags = 0; + *ctx = seed; + + err = crypto_shash_update(shash, data, len); + ASSERT(err); + + retval = *ctx; + barrier_data(ctx); + + return retval; } void btrfs_csum_final(struct btrfs_fs_info *fs_info, u32 crc, u8 *result) { - put_unaligned_le32(~crc, result); + SHASH_DESC_ON_STACK(shash, fs_info->csum_shash); + u32 *ctx = (u32 *)shash_desc_ctx(shash); + int err; + + shash->tfm = fs_info->csum_shash; + shash->flags = 0; + *ctx = crc; + + err = crypto_shash_final(shash, result); + ASSERT(err); } /*