From patchwork Mon Nov 14 04:29:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13041858 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C774CC4332F for ; Mon, 14 Nov 2022 04:29:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235714AbiKNE34 (ORCPT ); Sun, 13 Nov 2022 23:29:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235817AbiKNE3z (ORCPT ); Sun, 13 Nov 2022 23:29:55 -0500 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC70C63A1; Sun, 13 Nov 2022 20:29:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=Qt4/e0OByaHunQ57KFruW2OreakuELv/lCMAQ/YNAoU=; b=TRz5EkJNgYfhfpghpYUiI33ZE4 c934vw0ql1+W09StGOr7MRqQRCwcinSKI1PU5JZ0zFPOq35gSkpsmxnIYAkb78JUT/yHAwLrNYt42 LV7XoLEVYWChalhpC9Y+fWqcnw6pnkQ2V0482i/OkNRaj44y7dsDNpSv8bW5ScNy1FlM8KjlKy9ky ZgJ0eJSjkmY2+ShrDDhe88PQGS4FYmLSgMxWFtgMm8M6E3xWERvSgua6CynPKeLf2gwyxBz5EeloO L2pAeteMdk4Z9YVJZEI6zCvWtO+7bnDVvKIqd3jJlGA9dxWeHN/bD0zNg0DKUVl1Trm4+U3StxQ+2 JOrP2fCw==; Received: from [2001:4bb8:191:2606:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1ouR6V-00FvU3-KL; Mon, 14 Nov 2022 04:29:52 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Mike Snitzer , "Theodore Y. Ts'o" , Jaegeuk Kim , Eric Biggers , dm-devel@redhat.com, linux-block@vger.kernel.org, linux-fscrypt@vger.kernel.org Subject: [PATCH 2/3] blk-crypto: add a blk_crypto_config_supported_natively helper Date: Mon, 14 Nov 2022 05:29:43 +0100 Message-Id: <20221114042944.1009870-3-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221114042944.1009870-1-hch@lst.de> References: <20221114042944.1009870-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-fscrypt@vger.kernel.org Add a blk_crypto_config_supported_natively helper that wraps __blk_crypto_cfg_supported to retrieve the crypto_profile from the request queue. With this fscrypt can stop including blk-crypto-profile.h and rely on the public consumer interface in blk-crypto.h. Signed-off-by: Christoph Hellwig Reviewed-by: Eric Biggers --- block/blk-crypto.c | 21 ++++++++++++--------- fs/crypto/inline_crypt.c | 6 ++---- include/linux/blk-crypto.h | 2 ++ 3 files changed, 16 insertions(+), 13 deletions(-) diff --git a/block/blk-crypto.c b/block/blk-crypto.c index 0047436b63371..6a461f4d676a3 100644 --- a/block/blk-crypto.c +++ b/block/blk-crypto.c @@ -267,7 +267,6 @@ bool __blk_crypto_bio_prep(struct bio **bio_ptr) { struct bio *bio = *bio_ptr; const struct blk_crypto_key *bc_key = bio->bi_crypt_context->bc_key; - struct blk_crypto_profile *profile; /* Error if bio has no data. */ if (WARN_ON_ONCE(!bio_has_data(bio))) { @@ -284,10 +283,9 @@ bool __blk_crypto_bio_prep(struct bio **bio_ptr) * Success if device supports the encryption context, or if we succeeded * in falling back to the crypto API. */ - profile = bdev_get_queue(bio->bi_bdev)->crypto_profile; - if (__blk_crypto_cfg_supported(profile, &bc_key->crypto_cfg)) + if (blk_crypto_config_supported_natively(bio->bi_bdev, + &bc_key->crypto_cfg)) return true; - if (blk_crypto_fallback_bio_prep(bio_ptr)) return true; fail: @@ -352,6 +350,13 @@ int blk_crypto_init_key(struct blk_crypto_key *blk_key, const u8 *raw_key, return 0; } +bool blk_crypto_config_supported_natively(struct block_device *bdev, + const struct blk_crypto_config *cfg) +{ + return __blk_crypto_cfg_supported(bdev_get_queue(bdev)->crypto_profile, + cfg); +} + /* * Check if bios with @cfg can be en/decrypted by blk-crypto (i.e. either the * block_device it's submitted to supports inline crypto, or the @@ -361,8 +366,7 @@ bool blk_crypto_config_supported(struct block_device *bdev, const struct blk_crypto_config *cfg) { return IS_ENABLED(CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK) || - __blk_crypto_cfg_supported(bdev_get_queue(bdev)->crypto_profile, - cfg); + blk_crypto_config_supported_natively(bdev, cfg); } /** @@ -383,8 +387,7 @@ bool blk_crypto_config_supported(struct block_device *bdev, int blk_crypto_start_using_key(struct block_device *bdev, const struct blk_crypto_key *key) { - if (__blk_crypto_cfg_supported(bdev_get_queue(bdev)->crypto_profile, - &key->crypto_cfg)) + if (blk_crypto_config_supported_natively(bdev, &key->crypto_cfg)) return 0; return blk_crypto_fallback_start_using_mode(key->crypto_cfg.crypto_mode); } @@ -407,7 +410,7 @@ int blk_crypto_evict_key(struct block_device *bdev, { struct request_queue *q = bdev_get_queue(bdev); - if (__blk_crypto_cfg_supported(q->crypto_profile, &key->crypto_cfg)) + if (blk_crypto_config_supported_natively(bdev, &key->crypto_cfg)) return __blk_crypto_evict_key(q->crypto_profile, key); /* diff --git a/fs/crypto/inline_crypt.c b/fs/crypto/inline_crypt.c index 55c4d8c23d30d..8bfb3ce864766 100644 --- a/fs/crypto/inline_crypt.c +++ b/fs/crypto/inline_crypt.c @@ -12,7 +12,7 @@ * provides the key and IV to use. */ -#include +#include #include #include #include @@ -77,10 +77,8 @@ static void fscrypt_log_blk_crypto_impl(struct fscrypt_mode *mode, unsigned int i; for (i = 0; i < num_devs; i++) { - struct request_queue *q = bdev_get_queue(devs[i]); - if (!IS_ENABLED(CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK) || - __blk_crypto_cfg_supported(q->crypto_profile, cfg)) { + blk_crypto_config_supported_natively(devs[i], cfg)) { if (!xchg(&mode->logged_blk_crypto_native, 1)) pr_info("fscrypt: %s using blk-crypto (native)\n", mode->friendly_name); diff --git a/include/linux/blk-crypto.h b/include/linux/blk-crypto.h index 561ca92e204d5..a33d32f5c2684 100644 --- a/include/linux/blk-crypto.h +++ b/include/linux/blk-crypto.h @@ -97,6 +97,8 @@ int blk_crypto_start_using_key(struct block_device *bdev, int blk_crypto_evict_key(struct block_device *bdev, const struct blk_crypto_key *key); +bool blk_crypto_config_supported_natively(struct block_device *bdev, + const struct blk_crypto_config *cfg); bool blk_crypto_config_supported(struct block_device *bdev, const struct blk_crypto_config *cfg);