From patchwork Wed Jun 5 06:28:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 801885 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 436C613D8A3; Wed, 5 Jun 2024 06:30:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717569048; cv=none; b=kGul5Lmtp/q5vgW3n9bvK/IRZB49JNFM5y5mHAp+sUxgcPyzHh/Depn4xKV4wcX1kJ+PncJpJBH92W8NTP7PMRYwxzZO8kpTuR6e4EZdb6Ea8f9bWJRnVWNz+RQN79ibCXLpqWCi7c0v7Meep+jhIgJlXGW/dNqZYMp+7NlxleQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717569048; c=relaxed/simple; bh=qib/9xPCFetZ7Q4riYiYf3kXL5Ke7N2LBl+E7GOIs90=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ej5hB/Xux8prp1P2lS6Jw7uR+rW7RR5KLP2XGbG+nCoFFmdlWrMet1QJS8wo7Lt8IqA29AJ2h6T73hW9likMt3q3W2FIviuaj5Qg4ea9IU4j+TwAQc0Pb9Q9YHHKjk82P7LU/j/4ybilsn/UR+IyR/nGQh0ubii0GKeg91RFh48= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=wby23bIg; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="wby23bIg" 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=CVlPq2/3UP6xOrwmHdGKzgza9gCdhisKIqS2joU6Vdc=; b=wby23bIgt+gpOcykE+x7E5zAH1 4SOSZ6qGbIw+SAm9RPPYbSJ3cMpgN8C9Xw2nBb15AGGPxesE3AH4Zlj2Q/Fqico4FPQaLskU6UeSE 1qRzgHxjzREtYUKW4t5IHm9AnIjg1HSP47VI5L0MgOua2HA0Sj9W9jDuJe2vBOP+WOeDi3kgVAdcz xZHY7Q9/V8dT2ouI82RQ9pVKQL4MXT6mMmiPtybOBcF44cq0PZUQj82J8SGjbPqZMispYwWgvLpwt Ez2/psEty+jwbZA42CyycpNZ848JKYnTAWwMogkYQnSRVTdrgMFzfia4MTt/qX4kk4CiZ6hT1ggjZ nF2RNDhQ==; Received: from 2a02-8389-2341-5b80-5bcb-678a-c0a8-08fe.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:5bcb:678a:c0a8:8fe] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sEkAR-00000004mVx-2c34; Wed, 05 Jun 2024 06:30:40 +0000 From: Christoph Hellwig To: Jens Axboe , "Martin K. Petersen" Cc: Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Dan Williams , Vishal Verma , Dave Jiang , Ira Weiny , Keith Busch , Sagi Grimberg , Chaitanya Kulkarni , linux-block@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org Subject: [PATCH 02/12] block: remove the unused BIP_{CTRL,DISK}_NOCHECK flags Date: Wed, 5 Jun 2024 08:28:31 +0200 Message-ID: <20240605063031.3286655-3-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240605063031.3286655-1-hch@lst.de> References: <20240605063031.3286655-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Both flags are only checked, but never set. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni --- drivers/scsi/sd.c | 14 +++----------- include/linux/bio.h | 2 -- 2 files changed, 3 insertions(+), 13 deletions(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index d957e29b17a98a..b477383ccc3b2a 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -806,25 +806,17 @@ static unsigned char sd_setup_protect_cmnd(struct scsi_cmnd *scmd, if (dix) { /* DIX Type 0, 1, 2, 3 */ if (bio_integrity_flagged(bio, BIP_IP_CHECKSUM)) scmd->prot_flags |= SCSI_PROT_IP_CHECKSUM; - - if (bio_integrity_flagged(bio, BIP_CTRL_NOCHECK) == false) - scmd->prot_flags |= SCSI_PROT_GUARD_CHECK; + scmd->prot_flags |= SCSI_PROT_GUARD_CHECK; } if (dif != T10_PI_TYPE3_PROTECTION) { /* DIX/DIF Type 0, 1, 2 */ scmd->prot_flags |= SCSI_PROT_REF_INCREMENT; - - if (bio_integrity_flagged(bio, BIP_CTRL_NOCHECK) == false) - scmd->prot_flags |= SCSI_PROT_REF_CHECK; + scmd->prot_flags |= SCSI_PROT_REF_CHECK; } if (dif) { /* DIX/DIF Type 1, 2, 3 */ scmd->prot_flags |= SCSI_PROT_TRANSFER_PI; - - if (bio_integrity_flagged(bio, BIP_DISK_NOCHECK)) - protect = 3 << 5; /* Disable target PI checking */ - else - protect = 1 << 5; /* Enable target PI checking */ + protect = 1 << 5; /* Enable target PI checking */ } scsi_set_prot_op(scmd, prot_op); diff --git a/include/linux/bio.h b/include/linux/bio.h index d5379548d684e1..ec5dcf8635ac66 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -324,8 +324,6 @@ static inline void bio_next_folio(struct folio_iter *fi, struct bio *bio) enum bip_flags { BIP_BLOCK_INTEGRITY = 1 << 0, /* block layer owns integrity data */ BIP_MAPPED_INTEGRITY = 1 << 1, /* ref tag has been remapped */ - BIP_CTRL_NOCHECK = 1 << 2, /* disable HBA integrity checking */ - BIP_DISK_NOCHECK = 1 << 3, /* disable disk integrity checking */ BIP_IP_CHECKSUM = 1 << 4, /* IP checksum */ BIP_INTEGRITY_USER = 1 << 5, /* Integrity payload is user address */ BIP_COPY_USER = 1 << 6, /* Kernel bounce buffer in use */ From patchwork Wed Jun 5 06:28:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 801884 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ED32718C350; Wed, 5 Jun 2024 06:30:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717569053; cv=none; b=Dokb6BjV6wl60O2lSbI5zf5yWgs5oXiDpfYjdxhmmj/PU133TLjUFP1jfj+kCvpFVjbgeudXbzdYrEw6mDO9nVlc4icp6Z5ap/fGkNoepRWfct4+xwr8NlE0pecWfGcans6BUq5KFKAjuoh8RNxbpxpAFoyKLV6UV5TodvDROKY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717569053; c=relaxed/simple; bh=amtFoRlRDfs9wY5qza6O79FO6aVs0askUOrfjWBJolo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=L96p4T+7bq6Fc2gO16ZsOVjWjbGvzLIKJSSUgBbdczPMbCSa6xhEJXLKPYdFplPqleie8SpDOmfnh7PtjGeNuvwqsYGPW1vj4Hz+ujhryuIiqx9pFuCdmGJcgtiv2HBDWg2KvB7LLGNJD4mZMe7MKhOlCWu/gclqBaMfOWC8fE0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=vapfI1+5; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="vapfI1+5" 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=A0Q5ddM5Zbd1SZ/iTA2oeDIE0fVMO3Bbp+dlZTGjz+M=; b=vapfI1+56K82Za5nLH40n+o15T 0Fepb5TF0Zgfe4HpnvHd48Y6/tp0HpQYw2sNY9+WeEryTSLx8mImbTfwU6/6PjITY9ofV1O2/UBCU lg6tZUblsnLB3ZMzHD9jRzal9VBq+OAx7ymplpFL5yhxw5Rpx75dgp+wRCJj8xwfXZw3eQVbRRn/g HIaWO8sYhJzFr+zIFLdx/+Z7mLbeLqGN7dAhyCTDDGXvrl4nKx7WIQySUPRWBJ3FLX+qHiZpV6PoM r6nFAdU7yeilaefEkKQAMl+jLC4UMZrJQJOK9/J6XlfEgHRtSauMFxfQkEhlXLt2hEXUv64Qb406o 6vuLwE5g==; Received: from 2a02-8389-2341-5b80-5bcb-678a-c0a8-08fe.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:5bcb:678a:c0a8:8fe] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sEkAX-00000004mZ3-2e2Z; Wed, 05 Jun 2024 06:30:46 +0000 From: Christoph Hellwig To: Jens Axboe , "Martin K. Petersen" Cc: Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Dan Williams , Vishal Verma , Dave Jiang , Ira Weiny , Keith Busch , Sagi Grimberg , Chaitanya Kulkarni , linux-block@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org Subject: [PATCH 04/12] block: remove the blk_integrity_profile structure Date: Wed, 5 Jun 2024 08:28:33 +0200 Message-ID: <20240605063031.3286655-5-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240605063031.3286655-1-hch@lst.de> References: <20240605063031.3286655-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Block layer integrity configuration is a bit complex right now, as it indirects through operation vectors for a simple two-dimensional configuration: a) the checksum type of none, ip checksum, crc, crc64 b) the presence or absence of a reference tag Remove the integrity profile, and instead add a separate csum_type flag which replaces the existing ip-checksum field and a new flag that indicates the presence of the reference tag. This removes up to two layers of indirect calls and generally simplifies the code. The downside is that block/t10-pi.c now has to be built into the kernel when CONFIG_BLK_DEV_INTEGRITY is supported. Given that both nvme and SCSI require t10-pi.ko, it is loaded for all usual configurations that enabled CONFIG_BLK_DEV_INTEGRITY already, though. Signed-off-by: Christoph Hellwig --- block/Kconfig | 8 +- block/Makefile | 3 +- block/bio-integrity.c | 33 ++-- block/blk-integrity.c | 64 ++++---- block/blk-mq.c | 13 +- block/blk.h | 8 + block/t10-pi.c | 228 +++++++++------------------- drivers/md/dm-crypt.c | 2 +- drivers/nvme/host/Kconfig | 1 - drivers/nvme/host/core.c | 17 +-- drivers/nvme/target/Kconfig | 1 - drivers/nvme/target/io-cmd-bdev.c | 16 +- drivers/scsi/Kconfig | 1 - drivers/scsi/sd.c | 2 +- drivers/scsi/sd_dif.c | 19 +-- drivers/target/target_core_iblock.c | 49 +++--- include/linux/blk-integrity.h | 42 +++-- include/linux/blkdev.h | 2 +- include/linux/t10-pi.h | 8 - 19 files changed, 204 insertions(+), 313 deletions(-) diff --git a/block/Kconfig b/block/Kconfig index dc12af58dbaeca..5b623b876d3b4a 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -62,6 +62,8 @@ config BLK_DEV_BSGLIB config BLK_DEV_INTEGRITY bool "Block layer data integrity support" + select CRC_T10DIF + select CRC64_ROCKSOFT help Some storage devices allow extra information to be stored/retrieved to help protect the data. The block layer @@ -72,12 +74,6 @@ config BLK_DEV_INTEGRITY T10/SCSI Data Integrity Field or the T13/ATA External Path Protection. If in doubt, say N. -config BLK_DEV_INTEGRITY_T10 - tristate - depends on BLK_DEV_INTEGRITY - select CRC_T10DIF - select CRC64_ROCKSOFT - config BLK_DEV_WRITE_MOUNTED bool "Allow writing to mounted block devices" default y diff --git a/block/Makefile b/block/Makefile index 168150b9c51025..ddfd21c1a9ffc9 100644 --- a/block/Makefile +++ b/block/Makefile @@ -26,8 +26,7 @@ obj-$(CONFIG_MQ_IOSCHED_KYBER) += kyber-iosched.o bfq-y := bfq-iosched.o bfq-wf2q.o bfq-cgroup.o obj-$(CONFIG_IOSCHED_BFQ) += bfq.o -obj-$(CONFIG_BLK_DEV_INTEGRITY) += bio-integrity.o blk-integrity.o -obj-$(CONFIG_BLK_DEV_INTEGRITY_T10) += t10-pi.o +obj-$(CONFIG_BLK_DEV_INTEGRITY) += bio-integrity.o blk-integrity.o t10-pi.o obj-$(CONFIG_BLK_MQ_PCI) += blk-mq-pci.o obj-$(CONFIG_BLK_MQ_VIRTIO) += blk-mq-virtio.o obj-$(CONFIG_BLK_DEV_ZONED) += blk-zoned.o diff --git a/block/bio-integrity.c b/block/bio-integrity.c index 43f112ec8b59fe..5966a65edcd10e 100644 --- a/block/bio-integrity.c +++ b/block/bio-integrity.c @@ -378,10 +378,9 @@ EXPORT_SYMBOL_GPL(bio_integrity_map_user); * bio_integrity_process - Process integrity metadata for a bio * @bio: bio to generate/verify integrity metadata for * @proc_iter: iterator to process - * @proc_fn: Pointer to the relevant processing function */ static blk_status_t bio_integrity_process(struct bio *bio, - struct bvec_iter *proc_iter, integrity_processing_fn *proc_fn) + struct bvec_iter *proc_iter) { struct blk_integrity *bi = blk_get_integrity(bio->bi_bdev->bd_disk); struct blk_integrity_iter iter; @@ -392,17 +391,18 @@ static blk_status_t bio_integrity_process(struct bio *bio, iter.disk_name = bio->bi_bdev->bd_disk->disk_name; iter.interval = 1 << bi->interval_exp; - iter.tuple_size = bi->tuple_size; iter.seed = proc_iter->bi_sector; iter.prot_buf = bvec_virt(bip->bip_vec); - iter.pi_offset = bi->pi_offset; __bio_for_each_segment(bv, bio, bviter, *proc_iter) { void *kaddr = bvec_kmap_local(&bv); iter.data_buf = kaddr; iter.data_size = bv.bv_len; - ret = proc_fn(&iter); + if (bio_data_dir(bio) == WRITE) + blk_integrity_generate(&iter, bi); + else + ret = blk_integrity_verify(&iter, bi); kunmap_local(kaddr); if (ret) @@ -446,13 +446,14 @@ bool bio_integrity_prep(struct bio *bio) if (bio_integrity(bio)) return true; + if (!bi->csum_type) + return true; + if (bio_data_dir(bio) == READ) { - if (!bi->profile->verify_fn || - !(bi->flags & BLK_INTEGRITY_VERIFY)) + if (!(bi->flags & BLK_INTEGRITY_VERIFY)) return true; } else { - if (!bi->profile->generate_fn || - !(bi->flags & BLK_INTEGRITY_GENERATE)) + if (!(bi->flags & BLK_INTEGRITY_GENERATE)) return true; } @@ -499,12 +500,10 @@ bool bio_integrity_prep(struct bio *bio) } /* Auto-generate integrity metadata if this is a write */ - if (bio_data_dir(bio) == WRITE) { - bio_integrity_process(bio, &bio->bi_iter, - bi->profile->generate_fn); - } else { + if (bio_data_dir(bio) == WRITE) + bio_integrity_process(bio, &bio->bi_iter); + else bip->bio_iter = bio->bi_iter; - } return true; err_end_io: @@ -527,15 +526,13 @@ static void bio_integrity_verify_fn(struct work_struct *work) struct bio_integrity_payload *bip = container_of(work, struct bio_integrity_payload, bip_work); struct bio *bio = bip->bip_bio; - struct blk_integrity *bi = blk_get_integrity(bio->bi_bdev->bd_disk); /* * At the moment verify is called bio's iterator was advanced * during split and completion, we need to rewind iterator to * it's original position. */ - bio->bi_status = bio_integrity_process(bio, &bip->bio_iter, - bi->profile->verify_fn); + bio->bi_status = bio_integrity_process(bio, &bip->bio_iter); bio_integrity_free(bio); bio_endio(bio); } @@ -557,7 +554,7 @@ bool __bio_integrity_endio(struct bio *bio) struct bio_integrity_payload *bip = bio_integrity(bio); if (bio_op(bio) == REQ_OP_READ && !bio->bi_status && - (bip->bip_flags & BIP_BLOCK_INTEGRITY) && bi->profile->verify_fn) { + (bip->bip_flags & BIP_BLOCK_INTEGRITY) && bi->csum_type) { INIT_WORK(&bip->bip_work, bio_integrity_verify_fn); queue_work(kintegrityd_wq, &bip->bip_work); return false; diff --git a/block/blk-integrity.c b/block/blk-integrity.c index ccbeb6dfa87a4d..4767603b443990 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -123,10 +123,10 @@ int blk_integrity_compare(struct gendisk *gd1, struct gendisk *gd2) struct blk_integrity *b1 = &gd1->queue->integrity; struct blk_integrity *b2 = &gd2->queue->integrity; - if (!b1->profile && !b2->profile) + if (!b1->tuple_size && !b2->tuple_size) return 0; - if (!b1->profile || !b2->profile) + if (!b1->tuple_size || !b2->tuple_size) return -1; if (b1->interval_exp != b2->interval_exp) { @@ -150,10 +150,13 @@ int blk_integrity_compare(struct gendisk *gd1, struct gendisk *gd2) return -1; } - if (b1->profile != b2->profile) { + if (b1->csum_type != b2->csum_type || + (b1->flags & BLK_INTEGRITY_REF_TAG) != + (b2->flags & BLK_INTEGRITY_REF_TAG)) { pr_err("%s: %s/%s type %s != %s\n", __func__, gd1->disk_name, gd2->disk_name, - b1->profile->name, b2->profile->name); + blk_integrity_profile_name(b1), + blk_integrity_profile_name(b2)); return -1; } @@ -217,14 +220,35 @@ static inline struct blk_integrity *dev_to_bi(struct device *dev) return &dev_to_disk(dev)->queue->integrity; } +const char *blk_integrity_profile_name(struct blk_integrity *bi) +{ + switch (bi->csum_type) { + case BLK_INTEGRITY_CSUM_IP: + if (bi->flags & BLK_INTEGRITY_REF_TAG) + return "T10-DIF-TYPE1-IP"; + return "T10-DIF-TYPE3-IP"; + case BLK_INTEGRITY_CSUM_CRC: + if (bi->flags & BLK_INTEGRITY_REF_TAG) + return "T10-DIF-TYPE1-CRC"; + return "T10-DIF-TYPE3-CRC"; + case BLK_INTEGRITY_CSUM_CRC64: + if (bi->flags & BLK_INTEGRITY_REF_TAG) + return "EXT-DIF-TYPE1-CRC64"; + return "EXT-DIF-TYPE3-CRC64"; + default: + return "nop"; + } +} +EXPORT_SYMBOL_GPL(blk_integrity_profile_name); + static ssize_t format_show(struct device *dev, struct device_attribute *attr, char *page) { struct blk_integrity *bi = dev_to_bi(dev); - if (bi->profile && bi->profile->name) - return sysfs_emit(page, "%s\n", bi->profile->name); - return sysfs_emit(page, "none\n"); + if (!bi->tuple_size) + return sysfs_emit(page, "none\n"); + return sysfs_emit(page, "%s\n", blk_integrity_profile_name(bi)); } static ssize_t tag_size_show(struct device *dev, struct device_attribute *attr, @@ -326,28 +350,6 @@ const struct attribute_group blk_integrity_attr_group = { .attrs = integrity_attrs, }; -static blk_status_t blk_integrity_nop_fn(struct blk_integrity_iter *iter) -{ - return BLK_STS_OK; -} - -static void blk_integrity_nop_prepare(struct request *rq) -{ -} - -static void blk_integrity_nop_complete(struct request *rq, - unsigned int nr_bytes) -{ -} - -static const struct blk_integrity_profile nop_profile = { - .name = "nop", - .generate_fn = blk_integrity_nop_fn, - .verify_fn = blk_integrity_nop_fn, - .prepare_fn = blk_integrity_nop_prepare, - .complete_fn = blk_integrity_nop_complete, -}; - /** * blk_integrity_register - Register a gendisk as being integrity-capable * @disk: struct gendisk pointer to make integrity-aware @@ -363,11 +365,11 @@ void blk_integrity_register(struct gendisk *disk, struct blk_integrity *template { struct blk_integrity *bi = &disk->queue->integrity; + bi->csum_type = template->csum_type; bi->flags = BLK_INTEGRITY_VERIFY | BLK_INTEGRITY_GENERATE | template->flags; bi->interval_exp = template->interval_exp ? : ilog2(queue_logical_block_size(disk->queue)); - bi->profile = template->profile ? template->profile : &nop_profile; bi->tuple_size = template->tuple_size; bi->tag_size = template->tag_size; bi->pi_offset = template->pi_offset; @@ -394,7 +396,7 @@ void blk_integrity_unregister(struct gendisk *disk) { struct blk_integrity *bi = &disk->queue->integrity; - if (!bi->profile) + if (!bi->tuple_size) return; /* ensure all bios are off the integrity workqueue */ diff --git a/block/blk-mq.c b/block/blk-mq.c index 3b4df8e5ac9e5f..0d4cd39c3d25da 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -804,10 +804,8 @@ static void blk_complete_request(struct request *req) if (!bio) return; -#ifdef CONFIG_BLK_DEV_INTEGRITY if (blk_integrity_rq(req) && req_op(req) == REQ_OP_READ) - req->q->integrity.profile->complete_fn(req, total_bytes); -#endif + blk_integrity_complete(req, total_bytes); /* * Upper layers may call blk_crypto_evict_key() anytime after the last @@ -875,11 +873,9 @@ bool blk_update_request(struct request *req, blk_status_t error, if (!req->bio) return false; -#ifdef CONFIG_BLK_DEV_INTEGRITY if (blk_integrity_rq(req) && req_op(req) == REQ_OP_READ && error == BLK_STS_OK) - req->q->integrity.profile->complete_fn(req, nr_bytes); -#endif + blk_integrity_complete(req, nr_bytes); /* * Upper layers may call blk_crypto_evict_key() anytime after the last @@ -1264,10 +1260,9 @@ void blk_mq_start_request(struct request *rq) WRITE_ONCE(rq->state, MQ_RQ_IN_FLIGHT); rq->mq_hctx->tags->rqs[rq->tag] = rq; -#ifdef CONFIG_BLK_DEV_INTEGRITY if (blk_integrity_rq(rq) && req_op(rq) == REQ_OP_WRITE) - q->integrity.profile->prepare_fn(rq); -#endif + blk_integrity_prepare(rq); + if (rq->bio && rq->bio->bi_opf & REQ_POLLED) WRITE_ONCE(rq->bio->bi_cookie, rq->mq_hctx->queue_num); } diff --git a/block/blk.h b/block/blk.h index 189bc25beb502a..79e8d5d4fe0caf 100644 --- a/block/blk.h +++ b/block/blk.h @@ -9,6 +9,7 @@ #include #include "blk-crypto-internal.h" +struct blk_integrity_iter; struct elevator_type; /* Max future timer expiry for timeouts */ @@ -673,4 +674,11 @@ int bdev_open(struct block_device *bdev, blk_mode_t mode, void *holder, const struct blk_holder_ops *hops, struct file *bdev_file); int bdev_permission(dev_t dev, blk_mode_t mode, void *holder); +void blk_integrity_generate(struct blk_integrity_iter *iter, + struct blk_integrity *bi); +blk_status_t blk_integrity_verify(struct blk_integrity_iter *iter, + struct blk_integrity *bi); +void blk_integrity_prepare(struct request *rq); +void blk_integrity_complete(struct request *rq, unsigned int nr_bytes); + #endif /* BLK_INTERNAL_H */ diff --git a/block/t10-pi.c b/block/t10-pi.c index f4cc91156da1f2..2d8298a4cd3307 100644 --- a/block/t10-pi.c +++ b/block/t10-pi.c @@ -11,17 +11,16 @@ #include #include #include +#include "blk.h" -typedef __be16 (csum_fn) (__be16, void *, unsigned int); +#define T10_PI_F_IP_CSUM (1 << 1) -static __be16 t10_pi_crc_fn(__be16 crc, void *data, unsigned int len) +static __be16 t10_pi_csum(__be16 csum, void *data, unsigned int len, + unsigned char csum_type) { - return cpu_to_be16(crc_t10dif_update(be16_to_cpu(crc), data, len)); -} - -static __be16 t10_pi_ip_fn(__be16 csum, void *data, unsigned int len) -{ - return (__force __be16)ip_compute_csum(data, len); + if (csum_type == BLK_INTEGRITY_CSUM_IP) + return (__force __be16)ip_compute_csum(data, len); + return cpu_to_be16(crc_t10dif_update(be16_to_cpu(csum), data, len)); } /* @@ -29,48 +28,44 @@ static __be16 t10_pi_ip_fn(__be16 csum, void *data, unsigned int len) * 16 bit app tag, 32 bit reference tag. Type 3 does not define the ref * tag. */ -static blk_status_t t10_pi_generate(struct blk_integrity_iter *iter, - csum_fn *fn, enum t10_dif_type type) +static void t10_pi_generate(struct blk_integrity_iter *iter, + struct blk_integrity *bi) { - u8 offset = iter->pi_offset; + u8 offset = bi->pi_offset; unsigned int i; for (i = 0 ; i < iter->data_size ; i += iter->interval) { struct t10_pi_tuple *pi = iter->prot_buf + offset; - pi->guard_tag = fn(0, iter->data_buf, iter->interval); + pi->guard_tag = t10_pi_csum(0, iter->data_buf, iter->interval, + bi->csum_type); if (offset) - pi->guard_tag = fn(pi->guard_tag, iter->prot_buf, - offset); + pi->guard_tag = t10_pi_csum(pi->guard_tag, + iter->prot_buf, offset, bi->csum_type); pi->app_tag = 0; - if (type == T10_PI_TYPE1_PROTECTION) + if (bi->flags & BLK_INTEGRITY_REF_TAG) pi->ref_tag = cpu_to_be32(lower_32_bits(iter->seed)); else pi->ref_tag = 0; iter->data_buf += iter->interval; - iter->prot_buf += iter->tuple_size; + iter->prot_buf += bi->tuple_size; iter->seed++; } - - return BLK_STS_OK; } static blk_status_t t10_pi_verify(struct blk_integrity_iter *iter, - csum_fn *fn, enum t10_dif_type type) + struct blk_integrity *bi) { - u8 offset = iter->pi_offset; + u8 offset = bi->pi_offset; unsigned int i; - BUG_ON(type == T10_PI_TYPE0_PROTECTION); - for (i = 0 ; i < iter->data_size ; i += iter->interval) { struct t10_pi_tuple *pi = iter->prot_buf + offset; __be16 csum; - if (type == T10_PI_TYPE1_PROTECTION || - type == T10_PI_TYPE2_PROTECTION) { + if (bi->flags & BLK_INTEGRITY_REF_TAG) { if (pi->app_tag == T10_PI_APP_ESCAPE) goto next; @@ -82,15 +77,17 @@ static blk_status_t t10_pi_verify(struct blk_integrity_iter *iter, iter->seed, be32_to_cpu(pi->ref_tag)); return BLK_STS_PROTECTION; } - } else if (type == T10_PI_TYPE3_PROTECTION) { + } else { if (pi->app_tag == T10_PI_APP_ESCAPE && pi->ref_tag == T10_PI_REF_ESCAPE) goto next; } - csum = fn(0, iter->data_buf, iter->interval); + csum = t10_pi_csum(0, iter->data_buf, iter->interval, + bi->csum_type); if (offset) - csum = fn(csum, iter->prot_buf, offset); + csum = t10_pi_csum(csum, iter->prot_buf, offset, + bi->csum_type); if (pi->guard_tag != csum) { pr_err("%s: guard tag error at sector %llu " \ @@ -102,33 +99,13 @@ static blk_status_t t10_pi_verify(struct blk_integrity_iter *iter, next: iter->data_buf += iter->interval; - iter->prot_buf += iter->tuple_size; + iter->prot_buf += bi->tuple_size; iter->seed++; } return BLK_STS_OK; } -static blk_status_t t10_pi_type1_generate_crc(struct blk_integrity_iter *iter) -{ - return t10_pi_generate(iter, t10_pi_crc_fn, T10_PI_TYPE1_PROTECTION); -} - -static blk_status_t t10_pi_type1_generate_ip(struct blk_integrity_iter *iter) -{ - return t10_pi_generate(iter, t10_pi_ip_fn, T10_PI_TYPE1_PROTECTION); -} - -static blk_status_t t10_pi_type1_verify_crc(struct blk_integrity_iter *iter) -{ - return t10_pi_verify(iter, t10_pi_crc_fn, T10_PI_TYPE1_PROTECTION); -} - -static blk_status_t t10_pi_type1_verify_ip(struct blk_integrity_iter *iter) -{ - return t10_pi_verify(iter, t10_pi_ip_fn, T10_PI_TYPE1_PROTECTION); -} - /** * t10_pi_type1_prepare - prepare PI prior submitting request to device * @rq: request with PI that should be prepared @@ -225,81 +202,15 @@ static void t10_pi_type1_complete(struct request *rq, unsigned int nr_bytes) } } -static blk_status_t t10_pi_type3_generate_crc(struct blk_integrity_iter *iter) -{ - return t10_pi_generate(iter, t10_pi_crc_fn, T10_PI_TYPE3_PROTECTION); -} - -static blk_status_t t10_pi_type3_generate_ip(struct blk_integrity_iter *iter) -{ - return t10_pi_generate(iter, t10_pi_ip_fn, T10_PI_TYPE3_PROTECTION); -} - -static blk_status_t t10_pi_type3_verify_crc(struct blk_integrity_iter *iter) -{ - return t10_pi_verify(iter, t10_pi_crc_fn, T10_PI_TYPE3_PROTECTION); -} - -static blk_status_t t10_pi_type3_verify_ip(struct blk_integrity_iter *iter) -{ - return t10_pi_verify(iter, t10_pi_ip_fn, T10_PI_TYPE3_PROTECTION); -} - -/* Type 3 does not have a reference tag so no remapping is required. */ -static void t10_pi_type3_prepare(struct request *rq) -{ -} - -/* Type 3 does not have a reference tag so no remapping is required. */ -static void t10_pi_type3_complete(struct request *rq, unsigned int nr_bytes) -{ -} - -const struct blk_integrity_profile t10_pi_type1_crc = { - .name = "T10-DIF-TYPE1-CRC", - .generate_fn = t10_pi_type1_generate_crc, - .verify_fn = t10_pi_type1_verify_crc, - .prepare_fn = t10_pi_type1_prepare, - .complete_fn = t10_pi_type1_complete, -}; -EXPORT_SYMBOL(t10_pi_type1_crc); - -const struct blk_integrity_profile t10_pi_type1_ip = { - .name = "T10-DIF-TYPE1-IP", - .generate_fn = t10_pi_type1_generate_ip, - .verify_fn = t10_pi_type1_verify_ip, - .prepare_fn = t10_pi_type1_prepare, - .complete_fn = t10_pi_type1_complete, -}; -EXPORT_SYMBOL(t10_pi_type1_ip); - -const struct blk_integrity_profile t10_pi_type3_crc = { - .name = "T10-DIF-TYPE3-CRC", - .generate_fn = t10_pi_type3_generate_crc, - .verify_fn = t10_pi_type3_verify_crc, - .prepare_fn = t10_pi_type3_prepare, - .complete_fn = t10_pi_type3_complete, -}; -EXPORT_SYMBOL(t10_pi_type3_crc); - -const struct blk_integrity_profile t10_pi_type3_ip = { - .name = "T10-DIF-TYPE3-IP", - .generate_fn = t10_pi_type3_generate_ip, - .verify_fn = t10_pi_type3_verify_ip, - .prepare_fn = t10_pi_type3_prepare, - .complete_fn = t10_pi_type3_complete, -}; -EXPORT_SYMBOL(t10_pi_type3_ip); - static __be64 ext_pi_crc64(u64 crc, void *data, unsigned int len) { return cpu_to_be64(crc64_rocksoft_update(crc, data, len)); } -static blk_status_t ext_pi_crc64_generate(struct blk_integrity_iter *iter, - enum t10_dif_type type) +static void ext_pi_crc64_generate(struct blk_integrity_iter *iter, + struct blk_integrity *bi) { - u8 offset = iter->pi_offset; + u8 offset = bi->pi_offset; unsigned int i; for (i = 0 ; i < iter->data_size ; i += iter->interval) { @@ -311,17 +222,15 @@ static blk_status_t ext_pi_crc64_generate(struct blk_integrity_iter *iter, iter->prot_buf, offset); pi->app_tag = 0; - if (type == T10_PI_TYPE1_PROTECTION) + if (bi->flags & BLK_INTEGRITY_REF_TAG) put_unaligned_be48(iter->seed, pi->ref_tag); else put_unaligned_be48(0ULL, pi->ref_tag); iter->data_buf += iter->interval; - iter->prot_buf += iter->tuple_size; + iter->prot_buf += bi->tuple_size; iter->seed++; } - - return BLK_STS_OK; } static bool ext_pi_ref_escape(u8 *ref_tag) @@ -332,9 +241,9 @@ static bool ext_pi_ref_escape(u8 *ref_tag) } static blk_status_t ext_pi_crc64_verify(struct blk_integrity_iter *iter, - enum t10_dif_type type) + struct blk_integrity *bi) { - u8 offset = iter->pi_offset; + u8 offset = bi->pi_offset; unsigned int i; for (i = 0; i < iter->data_size; i += iter->interval) { @@ -342,7 +251,7 @@ static blk_status_t ext_pi_crc64_verify(struct blk_integrity_iter *iter, u64 ref, seed; __be64 csum; - if (type == T10_PI_TYPE1_PROTECTION) { + if (bi->flags & BLK_INTEGRITY_REF_TAG) { if (pi->app_tag == T10_PI_APP_ESCAPE) goto next; @@ -353,7 +262,7 @@ static blk_status_t ext_pi_crc64_verify(struct blk_integrity_iter *iter, iter->disk_name, seed, ref); return BLK_STS_PROTECTION; } - } else if (type == T10_PI_TYPE3_PROTECTION) { + } else { if (pi->app_tag == T10_PI_APP_ESCAPE && ext_pi_ref_escape(pi->ref_tag)) goto next; @@ -374,23 +283,13 @@ static blk_status_t ext_pi_crc64_verify(struct blk_integrity_iter *iter, next: iter->data_buf += iter->interval; - iter->prot_buf += iter->tuple_size; + iter->prot_buf += bi->tuple_size; iter->seed++; } return BLK_STS_OK; } -static blk_status_t ext_pi_type1_verify_crc64(struct blk_integrity_iter *iter) -{ - return ext_pi_crc64_verify(iter, T10_PI_TYPE1_PROTECTION); -} - -static blk_status_t ext_pi_type1_generate_crc64(struct blk_integrity_iter *iter) -{ - return ext_pi_crc64_generate(iter, T10_PI_TYPE1_PROTECTION); -} - static void ext_pi_type1_prepare(struct request *rq) { struct blk_integrity *bi = &rq->q->integrity; @@ -467,33 +366,48 @@ static void ext_pi_type1_complete(struct request *rq, unsigned int nr_bytes) } } -static blk_status_t ext_pi_type3_verify_crc64(struct blk_integrity_iter *iter) +void blk_integrity_generate(struct blk_integrity_iter *iter, + struct blk_integrity *bi) { - return ext_pi_crc64_verify(iter, T10_PI_TYPE3_PROTECTION); + if (bi->csum_type == BLK_INTEGRITY_CSUM_CRC64) + ext_pi_crc64_generate(iter, bi); + else + t10_pi_generate(iter, bi); } -static blk_status_t ext_pi_type3_generate_crc64(struct blk_integrity_iter *iter) +blk_status_t blk_integrity_verify(struct blk_integrity_iter *iter, + struct blk_integrity *bi) { - return ext_pi_crc64_generate(iter, T10_PI_TYPE3_PROTECTION); + if (bi->csum_type == BLK_INTEGRITY_CSUM_CRC64) + return ext_pi_crc64_verify(iter, bi); + return t10_pi_verify(iter, bi); } -const struct blk_integrity_profile ext_pi_type1_crc64 = { - .name = "EXT-DIF-TYPE1-CRC64", - .generate_fn = ext_pi_type1_generate_crc64, - .verify_fn = ext_pi_type1_verify_crc64, - .prepare_fn = ext_pi_type1_prepare, - .complete_fn = ext_pi_type1_complete, -}; -EXPORT_SYMBOL_GPL(ext_pi_type1_crc64); - -const struct blk_integrity_profile ext_pi_type3_crc64 = { - .name = "EXT-DIF-TYPE3-CRC64", - .generate_fn = ext_pi_type3_generate_crc64, - .verify_fn = ext_pi_type3_verify_crc64, - .prepare_fn = t10_pi_type3_prepare, - .complete_fn = t10_pi_type3_complete, -}; -EXPORT_SYMBOL_GPL(ext_pi_type3_crc64); +void blk_integrity_prepare(struct request *rq) +{ + struct blk_integrity *bi = &rq->q->integrity; + + if (!(bi->flags & BLK_INTEGRITY_REF_TAG)) + return; + + if (bi->csum_type == BLK_INTEGRITY_CSUM_CRC64) + ext_pi_type1_prepare(rq); + else + t10_pi_type1_prepare(rq); +} + +void blk_integrity_complete(struct request *rq, unsigned int nr_bytes) +{ + struct blk_integrity *bi = &rq->q->integrity; + + if (!(bi->flags & BLK_INTEGRITY_REF_TAG)) + return; + + if (bi->csum_type == BLK_INTEGRITY_CSUM_CRC64) + ext_pi_type1_complete(rq, nr_bytes); + else + t10_pi_type1_complete(rq, nr_bytes); +} MODULE_DESCRIPTION("T10 Protection Information module"); MODULE_LICENSE("GPL"); diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 1dfc462f29cd6f..6c013ceb0e5f1d 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -1177,7 +1177,7 @@ static int crypt_integrity_ctr(struct crypt_config *cc, struct dm_target *ti) struct mapped_device *md = dm_table_get_md(ti->table); /* We require an underlying device with non-PI metadata */ - if (!bi || strcmp(bi->profile->name, "nop")) { + if (!bi || bi->csum_type != BLK_INTEGRITY_CSUM_NONE) { ti->error = "Integrity profile not supported."; return -EINVAL; } diff --git a/drivers/nvme/host/Kconfig b/drivers/nvme/host/Kconfig index b309c8be720f47..a3caef75aa0a83 100644 --- a/drivers/nvme/host/Kconfig +++ b/drivers/nvme/host/Kconfig @@ -1,7 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only config NVME_CORE tristate - select BLK_DEV_INTEGRITY_T10 if BLK_DEV_INTEGRITY config BLK_DEV_NVME tristate "NVM Express block device" diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index f5d150c62955d8..14bac248cde4ca 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1744,17 +1744,16 @@ static bool nvme_init_integrity(struct gendisk *disk, struct nvme_ns_head *head) case NVME_NS_DPS_PI_TYPE3: switch (head->guard_type) { case NVME_NVM_NS_16B_GUARD: - integrity.profile = &t10_pi_type3_crc; + integrity.csum_type = BLK_INTEGRITY_CSUM_CRC; integrity.tag_size = sizeof(u16) + sizeof(u32); integrity.flags |= BLK_INTEGRITY_DEVICE_CAPABLE; break; case NVME_NVM_NS_64B_GUARD: - integrity.profile = &ext_pi_type3_crc64; + integrity.csum_type = BLK_INTEGRITY_CSUM_CRC64; integrity.tag_size = sizeof(u16) + 6; integrity.flags |= BLK_INTEGRITY_DEVICE_CAPABLE; break; default: - integrity.profile = NULL; break; } break; @@ -1762,22 +1761,22 @@ static bool nvme_init_integrity(struct gendisk *disk, struct nvme_ns_head *head) case NVME_NS_DPS_PI_TYPE2: switch (head->guard_type) { case NVME_NVM_NS_16B_GUARD: - integrity.profile = &t10_pi_type1_crc; + integrity.csum_type = BLK_INTEGRITY_CSUM_CRC; integrity.tag_size = sizeof(u16); - integrity.flags |= BLK_INTEGRITY_DEVICE_CAPABLE; + integrity.flags |= BLK_INTEGRITY_DEVICE_CAPABLE | + BLK_INTEGRITY_REF_TAG; break; case NVME_NVM_NS_64B_GUARD: - integrity.profile = &ext_pi_type1_crc64; + integrity.csum_type = BLK_INTEGRITY_CSUM_CRC64; integrity.tag_size = sizeof(u16); - integrity.flags |= BLK_INTEGRITY_DEVICE_CAPABLE; + integrity.flags |= BLK_INTEGRITY_DEVICE_CAPABLE | + BLK_INTEGRITY_REF_TAG; break; default: - integrity.profile = NULL; break; } break; default: - integrity.profile = NULL; break; } diff --git a/drivers/nvme/target/Kconfig b/drivers/nvme/target/Kconfig index 872dd1a0acd804..c42aec41cc7b1f 100644 --- a/drivers/nvme/target/Kconfig +++ b/drivers/nvme/target/Kconfig @@ -6,7 +6,6 @@ config NVME_TARGET depends on CONFIGFS_FS select NVME_KEYRING if NVME_TARGET_TCP_TLS select KEYS if NVME_TARGET_TCP_TLS - select BLK_DEV_INTEGRITY_T10 if BLK_DEV_INTEGRITY select SGL_ALLOC help This enabled target side support for the NVMe protocol, that is diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c index 6426aac2634aeb..b628bc5ee99847 100644 --- a/drivers/nvme/target/io-cmd-bdev.c +++ b/drivers/nvme/target/io-cmd-bdev.c @@ -61,15 +61,17 @@ static void nvmet_bdev_ns_enable_integrity(struct nvmet_ns *ns) { struct blk_integrity *bi = bdev_get_integrity(ns->bdev); - if (bi) { + if (!bi) + return; + + if (bi->csum_type == BLK_INTEGRITY_CSUM_CRC) { ns->metadata_size = bi->tuple_size; - if (bi->profile == &t10_pi_type1_crc) + if (bi->flags & BLK_INTEGRITY_REF_TAG) ns->pi_type = NVME_NS_DPS_PI_TYPE1; - else if (bi->profile == &t10_pi_type3_crc) - ns->pi_type = NVME_NS_DPS_PI_TYPE3; else - /* Unsupported metadata type */ - ns->metadata_size = 0; + ns->pi_type = NVME_NS_DPS_PI_TYPE3; + } else { + ns->metadata_size = 0; } } @@ -102,7 +104,7 @@ int nvmet_bdev_ns_enable(struct nvmet_ns *ns) ns->pi_type = 0; ns->metadata_size = 0; - if (IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY_T10)) + if (IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)) nvmet_bdev_ns_enable_integrity(ns); if (bdev_is_zoned(ns->bdev)) { diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 065db86d602164..37c24ffea65cc0 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -82,7 +82,6 @@ comment "SCSI support type (disk, tape, CD-ROM)" config BLK_DEV_SD tristate "SCSI disk support" depends on SCSI - select BLK_DEV_INTEGRITY_T10 if BLK_DEV_INTEGRITY help If you want to use SCSI hard disks, Fibre Channel disks, Serial ATA (SATA) or Parallel ATA (PATA) hard disks, diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index e21b7df5c31b0d..67f24607b862a3 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -804,7 +804,7 @@ static unsigned char sd_setup_protect_cmnd(struct scsi_cmnd *scmd, unsigned int protect = 0; if (dix) { /* DIX Type 0, 1, 2, 3 */ - if (bi->flags & BLK_INTEGRITY_IP_CHECKSUM) + if (bi->csum_type == BLK_INTEGRITY_CSUM_IP) scmd->prot_flags |= SCSI_PROT_IP_CHECKSUM; scmd->prot_flags |= SCSI_PROT_GUARD_CHECK; } diff --git a/drivers/scsi/sd_dif.c b/drivers/scsi/sd_dif.c index 1df847b5f74764..6f0921c7db787b 100644 --- a/drivers/scsi/sd_dif.c +++ b/drivers/scsi/sd_dif.c @@ -47,18 +47,13 @@ void sd_dif_config_host(struct scsi_disk *sdkp) memset(&bi, 0, sizeof(bi)); /* Enable DMA of protection information */ - if (scsi_host_get_guard(sdkp->device->host) & SHOST_DIX_GUARD_IP) { - if (type == T10_PI_TYPE3_PROTECTION) - bi.profile = &t10_pi_type3_ip; - else - bi.profile = &t10_pi_type1_ip; + if (scsi_host_get_guard(sdkp->device->host) & SHOST_DIX_GUARD_IP) + bi.csum_type = BLK_INTEGRITY_CSUM_IP; + else + bi.csum_type = BLK_INTEGRITY_CSUM_CRC; - bi.flags |= BLK_INTEGRITY_IP_CHECKSUM; - } else - if (type == T10_PI_TYPE3_PROTECTION) - bi.profile = &t10_pi_type3_crc; - else - bi.profile = &t10_pi_type1_crc; + if (type != T10_PI_TYPE3_PROTECTION) + bi.flags |= BLK_INTEGRITY_REF_TAG; bi.tuple_size = sizeof(struct t10_pi_tuple); @@ -76,7 +71,7 @@ void sd_dif_config_host(struct scsi_disk *sdkp) sd_first_printk(KERN_NOTICE, sdkp, "Enabling DIX %s, application tag size %u bytes\n", - bi.profile->name, bi.tag_size); + blk_integrity_profile_name(&bi), bi.tag_size); out: blk_integrity_register(disk, &bi); } diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 7f6ca81778453b..a3e09adc4e767c 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -148,35 +148,38 @@ static int iblock_configure_device(struct se_device *dev) dev->dev_attrib.is_nonrot = 1; bi = bdev_get_integrity(bd); - if (bi) { - struct bio_set *bs = &ib_dev->ibd_bio_set; - - if (!strcmp(bi->profile->name, "T10-DIF-TYPE3-IP") || - !strcmp(bi->profile->name, "T10-DIF-TYPE1-IP")) { - pr_err("IBLOCK export of blk_integrity: %s not" - " supported\n", bi->profile->name); - ret = -ENOSYS; - goto out_blkdev_put; - } + if (!bi) + return 0; - if (!strcmp(bi->profile->name, "T10-DIF-TYPE3-CRC")) { - dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE3_PROT; - } else if (!strcmp(bi->profile->name, "T10-DIF-TYPE1-CRC")) { + switch (bi->csum_type) { + case BLK_INTEGRITY_CSUM_IP: + pr_err("IBLOCK export of blk_integrity: %s not supported\n", + blk_integrity_profile_name(bi)); + ret = -ENOSYS; + goto out_blkdev_put; + case BLK_INTEGRITY_CSUM_CRC: + if (bi->flags & BLK_INTEGRITY_REF_TAG) dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE1_PROT; - } + else + dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE3_PROT; + break; + default: + break; + } - if (dev->dev_attrib.pi_prot_type) { - if (bioset_integrity_create(bs, IBLOCK_BIO_POOL_SIZE) < 0) { - pr_err("Unable to allocate bioset for PI\n"); - ret = -ENOMEM; - goto out_blkdev_put; - } - pr_debug("IBLOCK setup BIP bs->bio_integrity_pool: %p\n", - &bs->bio_integrity_pool); + if (dev->dev_attrib.pi_prot_type) { + struct bio_set *bs = &ib_dev->ibd_bio_set; + + if (bioset_integrity_create(bs, IBLOCK_BIO_POOL_SIZE) < 0) { + pr_err("Unable to allocate bioset for PI\n"); + ret = -ENOMEM; + goto out_blkdev_put; } - dev->dev_attrib.hw_pi_prot_type = dev->dev_attrib.pi_prot_type; + pr_debug("IBLOCK setup BIP bs->bio_integrity_pool: %p\n", + &bs->bio_integrity_pool); } + dev->dev_attrib.hw_pi_prot_type = dev->dev_attrib.pi_prot_type; return 0; out_blkdev_put: diff --git a/include/linux/blk-integrity.h b/include/linux/blk-integrity.h index 7428cb43952da0..dea0fdebc3bdc7 100644 --- a/include/linux/blk-integrity.h +++ b/include/linux/blk-integrity.h @@ -10,7 +10,14 @@ enum blk_integrity_flags { BLK_INTEGRITY_VERIFY = 1 << 0, BLK_INTEGRITY_GENERATE = 1 << 1, BLK_INTEGRITY_DEVICE_CAPABLE = 1 << 2, - BLK_INTEGRITY_IP_CHECKSUM = 1 << 3, + BLK_INTEGRITY_REF_TAG = 1 << 3, +}; + +enum blk_integerity_checksum { + BLK_INTEGRITY_CSUM_NONE = 0, + BLK_INTEGRITY_CSUM_IP = 1, + BLK_INTEGRITY_CSUM_CRC = 2, + BLK_INTEGRITY_CSUM_CRC64 = 3, }; struct blk_integrity_iter { @@ -19,22 +26,10 @@ struct blk_integrity_iter { sector_t seed; unsigned int data_size; unsigned short interval; - unsigned char tuple_size; - unsigned char pi_offset; const char *disk_name; }; -typedef blk_status_t (integrity_processing_fn) (struct blk_integrity_iter *); -typedef void (integrity_prepare_fn) (struct request *); -typedef void (integrity_complete_fn) (struct request *, unsigned int); - -struct blk_integrity_profile { - integrity_processing_fn *generate_fn; - integrity_processing_fn *verify_fn; - integrity_prepare_fn *prepare_fn; - integrity_complete_fn *complete_fn; - const char *name; -}; +const char *blk_integrity_profile_name(struct blk_integrity *bi); #ifdef CONFIG_BLK_DEV_INTEGRITY void blk_integrity_register(struct gendisk *, struct blk_integrity *); @@ -44,14 +39,17 @@ int blk_rq_map_integrity_sg(struct request_queue *, struct bio *, struct scatterlist *); int blk_rq_count_integrity_sg(struct request_queue *, struct bio *); -static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk) +static inline bool +blk_integrity_queue_supports_integrity(struct request_queue *q) { - struct blk_integrity *bi = &disk->queue->integrity; + return q->integrity.tuple_size; +} - if (!bi->profile) +static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk) +{ + if (!blk_integrity_queue_supports_integrity(disk->queue)) return NULL; - - return bi; + return &disk->queue->integrity; } static inline struct blk_integrity * @@ -60,12 +58,6 @@ bdev_get_integrity(struct block_device *bdev) return blk_get_integrity(bdev->bd_disk); } -static inline bool -blk_integrity_queue_supports_integrity(struct request_queue *q) -{ - return q->integrity.profile; -} - static inline unsigned short queue_max_integrity_segments(const struct request_queue *q) { diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index ac8e0cb2353a0e..f5b0911eed55c6 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -106,8 +106,8 @@ struct disk_events; struct badblocks; struct blk_integrity { - const struct blk_integrity_profile *profile; unsigned char flags; + unsigned char csum_type; unsigned char tuple_size; unsigned char pi_offset; 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Received: from 2a02-8389-2341-5b80-5bcb-678a-c0a8-08fe.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:5bcb:678a:c0a8:8fe] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sEkAh-00000004meA-2xA5; Wed, 05 Jun 2024 06:30:56 +0000 From: Christoph Hellwig To: Jens Axboe , "Martin K. Petersen" Cc: Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Dan Williams , Vishal Verma , Dave Jiang , Ira Weiny , Keith Busch , Sagi Grimberg , Chaitanya Kulkarni , linux-block@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org Subject: [PATCH 06/12] block: factor out flag_{store,show} helper for integrity Date: Wed, 5 Jun 2024 08:28:35 +0200 Message-ID: <20240605063031.3286655-7-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240605063031.3286655-1-hch@lst.de> References: <20240605063031.3286655-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Factor the duplicate code for the generate and verify attributes into common helpers. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni --- block/blk-integrity.c | 53 +++++++++++++++++++++---------------------- 1 file changed, 26 insertions(+), 27 deletions(-) diff --git a/block/blk-integrity.c b/block/blk-integrity.c index e11b815c03c981..686b6adf0ea5c7 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -241,6 +241,28 @@ const char *blk_integrity_profile_name(struct blk_integrity *bi) } EXPORT_SYMBOL_GPL(blk_integrity_profile_name); +static ssize_t flag_store(struct device *dev, struct device_attribute *attr, + const char *page, size_t count, unsigned char flag) +{ + struct blk_integrity *bi = dev_to_bi(dev); + char *p = (char *) page; + unsigned long val = simple_strtoul(p, &p, 10); + + if (val) + bi->flags |= flag; + else + bi->flags &= ~flag; + return count; +} + +static ssize_t flag_show(struct device *dev, struct device_attribute *attr, + char *page, unsigned char flag) +{ + struct blk_integrity *bi = dev_to_bi(dev); + + return sysfs_emit(page, "%d\n", !!(bi->flags & flag)); +} + static ssize_t format_show(struct device *dev, struct device_attribute *attr, char *page) { @@ -273,49 +295,26 @@ static ssize_t read_verify_store(struct device *dev, struct device_attribute *attr, const char *page, size_t count) { - struct blk_integrity *bi = dev_to_bi(dev); - char *p = (char *) page; - unsigned long val = simple_strtoul(p, &p, 10); - - if (val) - bi->flags |= BLK_INTEGRITY_VERIFY; - else - bi->flags &= ~BLK_INTEGRITY_VERIFY; - - return count; + return flag_store(dev, attr, page, count, BLK_INTEGRITY_VERIFY); } static ssize_t read_verify_show(struct device *dev, struct device_attribute *attr, char *page) { - struct blk_integrity *bi = dev_to_bi(dev); - - return sysfs_emit(page, "%d\n", !!(bi->flags & BLK_INTEGRITY_VERIFY)); + return flag_show(dev, attr, page, BLK_INTEGRITY_VERIFY); } static ssize_t write_generate_store(struct device *dev, struct device_attribute *attr, const char *page, size_t count) { - struct blk_integrity *bi = dev_to_bi(dev); - - char *p = (char *) page; - unsigned long val = simple_strtoul(p, &p, 10); - - if (val) - bi->flags |= BLK_INTEGRITY_GENERATE; - else - bi->flags &= ~BLK_INTEGRITY_GENERATE; - - return count; + return flag_store(dev, attr, page, count, BLK_INTEGRITY_GENERATE); } static ssize_t write_generate_show(struct device *dev, struct device_attribute *attr, char *page) { - struct blk_integrity *bi = dev_to_bi(dev); - - return sysfs_emit(page, "%d\n", !!(bi->flags & BLK_INTEGRITY_GENERATE)); + return flag_show(dev, attr, page, BLK_INTEGRITY_GENERATE); } static ssize_t device_is_integrity_capable_show(struct device *dev, From patchwork Wed Jun 5 06:28:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 801882 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 35C6118F2DF; 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Petersen" Cc: Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Dan Williams , Vishal Verma , Dave Jiang , Ira Weiny , Keith Busch , Sagi Grimberg , Chaitanya Kulkarni , linux-block@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org Subject: [PATCH 08/12] block: don't pretend to generate/verify for non-PI metadata Date: Wed, 5 Jun 2024 08:28:37 +0200 Message-ID: <20240605063031.3286655-9-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240605063031.3286655-1-hch@lst.de> References: <20240605063031.3286655-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html The kernel won't ever generate or verify non-PI metadata, so don't set the flags and don't allow the user to modify them. Signed-off-by: Christoph Hellwig --- block/blk-integrity.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/block/blk-integrity.c b/block/blk-integrity.c index bb3cd1e0eeb58e..c2fcb8e659ed56 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -248,6 +248,9 @@ static ssize_t flag_store(struct device *dev, struct device_attribute *attr, unsigned long val; int err; + if (bi->csum_type == BLK_INTEGRITY_CSUM_NONE) + return -EINVAL; + err = kstrtoul(page, 10, &val); if (err) return err; @@ -369,8 +372,9 @@ void blk_integrity_register(struct gendisk *disk, struct blk_integrity *template struct blk_integrity *bi = &disk->queue->integrity; bi->csum_type = template->csum_type; - bi->flags = BLK_INTEGRITY_VERIFY | BLK_INTEGRITY_GENERATE | - template->flags; + bi->flags = template->flags; + if (bi->csum_type != BLK_INTEGRITY_CSUM_NONE) + bi->flags |= BLK_INTEGRITY_VERIFY | BLK_INTEGRITY_GENERATE; bi->interval_exp = template->interval_exp ? : ilog2(queue_logical_block_size(disk->queue)); bi->tuple_size = template->tuple_size; From patchwork Wed Jun 5 06:28:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 801881 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 37621187BD0; Wed, 5 Jun 2024 06:31:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717569074; cv=none; b=NMF2T5b3er3UrkvZpAHnEAEZf8JzveUAR6ywCLE6jYfmMBFshxzHOgSTrxMZske6r2iIjEJ7lxJTzAoU1S++PRDpD9DF4KpIr0Tq3mSJaorDYKwIhf5TCLwtRzKQhi+gDASRdFONYVCs2sfjDKIwbhGItmSAGU4sjwd69oVQwBA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717569074; c=relaxed/simple; bh=SwSZuCZY/YK2FDvB1hfziVZNiI0pp2MUHlJz2qHPn/4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iDZXIwqlx92xZ/ZpTVupGUiVzrJrzE8jaP/UjwPX/TtN6AykK3PWAgvrc/enpVneQH9o9c0Nytgl30pTL8zLTsKPI/T/LwPDMnNzztC/MYbiA0rH27zDBtFE2t3He2ARIEsYrnYTyt+9nVKcwx3qxCpcQ/EnEOdnYUUa0RgalTI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=GtwcVusn; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="GtwcVusn" 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=ZJ4E8GVXPKO+rXrJ94W+wcv31e2ieM2Sf//qMa2btyE=; b=GtwcVusnx+193Y/w7eqSam52vD l244unBtWcBKlatNPSdVVqttMM8cCY4XZ+RhzIsQQiOtzkXYvLUZWx2MvjsqGFLiV7VjxJwy8HFLx HxJ7ZORhgiJTDdWTN9lyjeeFWeaXaqYv94qlWrRsGkKIW2TNX2MuwmwSDUod1up0VO27k3LCQmBv8 yFSKefnRevMCfliuIO/xOed8zNzlZRd/x+l6I9FmBfgWlb/VG31aSt6JH7Ls6viXTUhao02XbqrUb SoDRdbu6XC9okW+fmuVZNhFm2t2OKt805DfaE0Ag0mxfrZAgDsogvp6GhvSfZ1ZOGBukrtzH/ekZu IY/VhuJw==; Received: from 2a02-8389-2341-5b80-5bcb-678a-c0a8-08fe.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:5bcb:678a:c0a8:8fe] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sEkAt-00000004mra-1A2w; Wed, 05 Jun 2024 06:31:08 +0000 From: Christoph Hellwig To: Jens Axboe , "Martin K. Petersen" Cc: Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Dan Williams , Vishal Verma , Dave Jiang , Ira Weiny , Keith Busch , Sagi Grimberg , Chaitanya Kulkarni , linux-block@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org Subject: [PATCH 10/12] block: bypass the STABLE_WRITES flag for protection information Date: Wed, 5 Jun 2024 08:28:39 +0200 Message-ID: <20240605063031.3286655-11-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240605063031.3286655-1-hch@lst.de> References: <20240605063031.3286655-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Currently registering a checksum-enabled (aka PI) integrity profile sets the QUEUE_FLAG_STABLE_WRITE flag, and unregistering it clears the flag. This can incorrectly clear the flag when the driver requires stable writes even without PI, e.g. in case of iSCSI or NVMe/TCP with data digest enabled. Fix this by looking at the csum_type directly in bdev_stable_writes and not setting the queue flag. Also remove the blk_queue_stable_writes helper as the only user in nvme wants to only look at the actual QUEUE_FLAG_STABLE_WRITE flag as it inherits the integrity configuration by other means. Signed-off-by: Christoph Hellwig --- block/blk-integrity.c | 6 ------ drivers/nvme/host/multipath.c | 3 ++- include/linux/blkdev.h | 12 ++++++++---- 3 files changed, 10 insertions(+), 11 deletions(-) diff --git a/block/blk-integrity.c b/block/blk-integrity.c index f07d44be6b2236..fbb0bd467eedbf 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -381,9 +381,6 @@ void blk_integrity_register(struct gendisk *disk, struct blk_integrity *template bi->tag_size = template->tag_size; bi->pi_offset = template->pi_offset; - if (bi->csum_type != BLK_INTEGRITY_CSUM_NONE) - blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, disk->queue); - #ifdef CONFIG_BLK_INLINE_ENCRYPTION if (disk->queue->crypto_profile) { pr_warn("blk-integrity: Integrity and hardware inline encryption are not supported together. Disabling hardware inline encryption.\n"); @@ -406,9 +403,6 @@ void blk_integrity_unregister(struct gendisk *disk) if (!bi->tuple_size) return; - - if (bi->csum_type != BLK_INTEGRITY_CSUM_NONE) - blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, disk->queue); memset(bi, 0, sizeof(*bi)); } EXPORT_SYMBOL(blk_integrity_unregister); diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index d8b6b4648eaff9..12c59db02539e5 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -875,7 +875,8 @@ void nvme_mpath_add_disk(struct nvme_ns *ns, __le32 anagrpid) nvme_mpath_set_live(ns); } - if (blk_queue_stable_writes(ns->queue) && ns->head->disk) + if (test_bit(QUEUE_FLAG_STABLE_WRITES, &ns->queue->queue_flags) && + ns->head->disk) blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, ns->head->disk->queue); #ifdef CONFIG_BLK_DEV_ZONED diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f5b0911eed55c6..150910a4d4e6ae 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -564,8 +564,6 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #define blk_queue_noxmerges(q) \ test_bit(QUEUE_FLAG_NOXMERGES, &(q)->queue_flags) #define blk_queue_nonrot(q) test_bit(QUEUE_FLAG_NONROT, &(q)->queue_flags) -#define blk_queue_stable_writes(q) \ - test_bit(QUEUE_FLAG_STABLE_WRITES, &(q)->queue_flags) #define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags) #define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags) #define blk_queue_zone_resetall(q) \ @@ -1293,8 +1291,14 @@ static inline bool bdev_synchronous(struct block_device *bdev) static inline bool bdev_stable_writes(struct block_device *bdev) { - return test_bit(QUEUE_FLAG_STABLE_WRITES, - &bdev_get_queue(bdev)->queue_flags); + struct request_queue *q = bdev_get_queue(bdev); + +#ifdef CONFIG_BLK_DEV_INTEGRITY + /* BLK_INTEGRITY_CSUM_NONE is not available in blkdev.h */ + if (q->integrity.csum_type != 0) + return true; +#endif + return test_bit(QUEUE_FLAG_STABLE_WRITES, &q->queue_flags); } static inline bool bdev_write_cache(struct block_device *bdev) From patchwork Wed Jun 5 06:28:41 2024 Content-Type: text/plain; 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bh=WG9xKDp4GPkqXZzrWUbj7q2iSsGNfWBNWCk17x6hCkY=; b=qMOEy5di+POrOCcPiTnuT3GuID SF5MES2CDkx6yQEj5ynKwlVNrZ7ZIOAfFLeJ0l8qK/vf5H1favYjiuBUmh1i1KA+fUzKYNB+qmLMO thQlrFu3OUqllDbaXAidVe42ULFqG3e5uuI+0byjdnop9F6r/BxYHrXv3K522Tyl4W0Gl1qVBcL4C K6sq9kmGgfISPevv0SpxGAUJpUjCQiq8oXU7yEA0R62Q1hYoO+b/q80HyN+Y7s4hJUG9B2kMkG+GH LNno4U29gMKEiA3jliUnG4AkHHgqJrs1x17a/BVPAxh2/lWUpFK/95dAqIjLYgrnbZMhBvXwf16ME DCHA4udw==; Received: from 2a02-8389-2341-5b80-5bcb-678a-c0a8-08fe.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:5bcb:678a:c0a8:8fe] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sEkAz-00000004mwx-2NXv; Wed, 05 Jun 2024 06:31:14 +0000 From: Christoph Hellwig To: Jens Axboe , "Martin K. Petersen" Cc: Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Dan Williams , Vishal Verma , Dave Jiang , Ira Weiny , Keith Busch , Sagi Grimberg , Chaitanya Kulkarni , linux-block@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org Subject: [PATCH 12/12] block: move integrity information into queue_limits Date: Wed, 5 Jun 2024 08:28:41 +0200 Message-ID: <20240605063031.3286655-13-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240605063031.3286655-1-hch@lst.de> References: <20240605063031.3286655-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Move the integrity information into the queue limits so that it can be set atomically with other queue limits, and that the sysfs changes to the read_verify and write_generate flags are properly synchronized. This also allows to provide a more useful helper to stack the integrity fields, although it still is separate from the main stacking function as not all stackable devices want to inherit the integrity settings. Even with that it greatly simplifies the code in md and dm. Note that the integrity field is moved as-is into the queue limits. While there are good arguments for removing the separate blk_integrity structure, this would cause a lot of churn and might better be done at a later time if desired. However the integrity field in the queue_limits structure is now unconditional so that various ifdefs can be avoided or replaced with IS_ENABLED(). Given that tiny size of it that seems like a worthwhile trade off. Signed-off-by: Christoph Hellwig --- Documentation/block/data-integrity.rst | 49 +------- block/blk-integrity.c | 126 +++---------------- block/blk-settings.c | 118 +++++++++++++++++- block/t10-pi.c | 12 +- drivers/md/dm-core.h | 1 - drivers/md/dm-integrity.c | 27 ++--- drivers/md/dm-table.c | 161 +++++-------------------- drivers/md/md.c | 72 +++-------- drivers/md/md.h | 5 +- drivers/md/raid0.c | 7 +- drivers/md/raid1.c | 10 +- drivers/md/raid10.c | 10 +- drivers/md/raid5.c | 2 +- drivers/nvdimm/btt.c | 13 +- drivers/nvme/host/core.c | 70 +++++------ drivers/scsi/sd.c | 10 +- drivers/scsi/sd.h | 12 +- drivers/scsi/sd_dif.c | 37 +++--- include/linux/blk-integrity.h | 32 ++--- include/linux/blkdev.h | 11 +- include/linux/t10-pi.h | 12 +- 21 files changed, 298 insertions(+), 499 deletions(-) diff --git a/Documentation/block/data-integrity.rst b/Documentation/block/data-integrity.rst index 6a760c0eb1924e..99905e880a0e56 100644 --- a/Documentation/block/data-integrity.rst +++ b/Documentation/block/data-integrity.rst @@ -153,18 +153,11 @@ bio_free() will automatically free the bip. 4.2 Block Device ---------------- -Because the format of the protection data is tied to the physical -disk, each block device has been extended with a block integrity -profile (struct blk_integrity). This optional profile is registered -with the block layer using blk_integrity_register(). - -The profile contains callback functions for generating and verifying -the protection data, as well as getting and setting application tags. -The profile also contains a few constants to aid in completing, -merging and splitting the integrity metadata. +Block devices can set up the integrity information in the integrity +sub-struture of the queue_limits structure. Layered block devices will need to pick a profile that's appropriate -for all subdevices. blk_integrity_compare() can help with that. DM +for all subdevices. queue_limits_stack_integrity() can help with that. DM and MD linear, RAID0 and RAID1 are currently supported. RAID4/5/6 will require extra work due to the application tag. @@ -250,42 +243,6 @@ will require extra work due to the application tag. integrity upon completion. -5.4 Registering A Block Device As Capable Of Exchanging Integrity Metadata --------------------------------------------------------------------------- - - To enable integrity exchange on a block device the gendisk must be - registered as capable: - - `int blk_integrity_register(gendisk, blk_integrity);` - - The blk_integrity struct is a template and should contain the - following:: - - static struct blk_integrity my_profile = { - .name = "STANDARDSBODY-TYPE-VARIANT-CSUM", - .generate_fn = my_generate_fn, - .verify_fn = my_verify_fn, - .tuple_size = sizeof(struct my_tuple_size), - .tag_size = , - }; - - 'name' is a text string which will be visible in sysfs. This is - part of the userland API so chose it carefully and never change - it. The format is standards body-type-variant. - E.g. T10-DIF-TYPE1-IP or T13-EPP-0-CRC. - - 'generate_fn' generates appropriate integrity metadata (for WRITE). - - 'verify_fn' verifies that the data buffer matches the integrity - metadata. - - 'tuple_size' must be set to match the size of the integrity - metadata per sector. I.e. 8 for DIF and EPP. - - 'tag_size' must be set to identify how many bytes of tag space - are available per hardware sector. For DIF this is either 2 or - 0 depending on the value of the Control Mode Page ATO bit. - ---------------------------------------------------------------------- 2007-12-24 Martin K. Petersen diff --git a/block/blk-integrity.c b/block/blk-integrity.c index 9a126c8d08f1d8..e55ef5c6859739 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -107,63 +107,6 @@ int blk_rq_map_integrity_sg(struct request_queue *q, struct bio *bio, } EXPORT_SYMBOL(blk_rq_map_integrity_sg); -/** - * blk_integrity_compare - Compare integrity profile of two disks - * @gd1: Disk to compare - * @gd2: Disk to compare - * - * Description: Meta-devices like DM and MD need to verify that all - * sub-devices use the same integrity format before advertising to - * upper layers that they can send/receive integrity metadata. This - * function can be used to check whether two gendisk devices have - * compatible integrity formats. - */ -int blk_integrity_compare(struct gendisk *gd1, struct gendisk *gd2) -{ - struct blk_integrity *b1 = &gd1->queue->integrity; - struct blk_integrity *b2 = &gd2->queue->integrity; - - if (!b1->tuple_size && !b2->tuple_size) - return 0; - - if (!b1->tuple_size || !b2->tuple_size) - return -1; - - if (b1->interval_exp != b2->interval_exp) { - pr_err("%s: %s/%s protection interval %u != %u\n", - __func__, gd1->disk_name, gd2->disk_name, - 1 << b1->interval_exp, 1 << b2->interval_exp); - return -1; - } - - if (b1->tuple_size != b2->tuple_size) { - pr_err("%s: %s/%s tuple sz %u != %u\n", __func__, - gd1->disk_name, gd2->disk_name, - b1->tuple_size, b2->tuple_size); - return -1; - } - - if (b1->tag_size && b2->tag_size && (b1->tag_size != b2->tag_size)) { - pr_err("%s: %s/%s tag sz %u != %u\n", __func__, - gd1->disk_name, gd2->disk_name, - b1->tag_size, b2->tag_size); - return -1; - } - - if (b1->csum_type != b2->csum_type || - (b1->flags & BLK_INTEGRITY_REF_TAG) != - (b2->flags & BLK_INTEGRITY_REF_TAG)) { - pr_err("%s: %s/%s type %s != %s\n", __func__, - gd1->disk_name, gd2->disk_name, - blk_integrity_profile_name(b1), - blk_integrity_profile_name(b2)); - return -1; - } - - return 0; -} -EXPORT_SYMBOL(blk_integrity_compare); - bool blk_integrity_merge_rq(struct request_queue *q, struct request *req, struct request *next) { @@ -217,7 +160,7 @@ bool blk_integrity_merge_bio(struct request_queue *q, struct request *req, static inline struct blk_integrity *dev_to_bi(struct device *dev) { - return &dev_to_disk(dev)->queue->integrity; + return &dev_to_disk(dev)->queue->limits.integrity; } const char *blk_integrity_profile_name(struct blk_integrity *bi) @@ -244,22 +187,30 @@ EXPORT_SYMBOL_GPL(blk_integrity_profile_name); static ssize_t flag_store(struct device *dev, struct device_attribute *attr, const char *page, size_t count, unsigned char flag) { - struct blk_integrity *bi = dev_to_bi(dev); + struct request_queue *q = dev_to_disk(dev)->queue; + struct queue_limits lim; unsigned long val; int err; - if (bi->csum_type == BLK_INTEGRITY_CSUM_NONE) + if (q->limits.integrity.csum_type == BLK_INTEGRITY_CSUM_NONE) return -EINVAL; err = kstrtoul(page, 10, &val); if (err) return err; - /* the flags are inverted vs the values in the sysfs files */ + /* note that the flags are inverted vs the values in the sysfs files */ + lim = queue_limits_start_update(q); if (val) - bi->flags &= ~flag; + lim.integrity.flags &= ~flag; else - bi->flags |= flag; + lim.integrity.flags |= flag; + + blk_mq_freeze_queue(q); + err = queue_limits_commit_update(q, &lim); + blk_mq_unfreeze_queue(q); + if (err) + return err; return count; } @@ -358,52 +309,3 @@ const struct attribute_group blk_integrity_attr_group = { .name = "integrity", .attrs = integrity_attrs, }; - -/** - * blk_integrity_register - Register a gendisk as being integrity-capable - * @disk: struct gendisk pointer to make integrity-aware - * @template: block integrity profile to register - * - * Description: When a device needs to advertise itself as being able to - * send/receive integrity metadata it must use this function to register - * the capability with the block layer. The template is a blk_integrity - * struct with values appropriate for the underlying hardware. See - * Documentation/block/data-integrity.rst. - */ -void blk_integrity_register(struct gendisk *disk, struct blk_integrity *template) -{ - struct blk_integrity *bi = &disk->queue->integrity; - - bi->csum_type = template->csum_type; - bi->flags = template->flags; - bi->interval_exp = template->interval_exp ? : - ilog2(queue_logical_block_size(disk->queue)); - bi->tuple_size = template->tuple_size; - bi->tag_size = template->tag_size; - bi->pi_offset = template->pi_offset; - -#ifdef CONFIG_BLK_INLINE_ENCRYPTION - if (disk->queue->crypto_profile) { - pr_warn("blk-integrity: Integrity and hardware inline encryption are not supported together. Disabling hardware inline encryption.\n"); - disk->queue->crypto_profile = NULL; - } -#endif -} -EXPORT_SYMBOL(blk_integrity_register); - -/** - * blk_integrity_unregister - Unregister block integrity profile - * @disk: disk whose integrity profile to unregister - * - * Description: This function unregisters the integrity capability from - * a block device. - */ -void blk_integrity_unregister(struct gendisk *disk) -{ - struct blk_integrity *bi = &disk->queue->integrity; - - if (!bi->tuple_size) - return; - memset(bi, 0, sizeof(*bi)); -} -EXPORT_SYMBOL(blk_integrity_unregister); diff --git a/block/blk-settings.c b/block/blk-settings.c index 996f247fc98e80..f11c8676eb4c67 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -6,7 +6,7 @@ #include #include #include -#include +#include #include #include #include @@ -97,6 +97,36 @@ static int blk_validate_zoned_limits(struct queue_limits *lim) return 0; } +static int blk_validate_integrity_limits(struct queue_limits *lim) +{ + struct blk_integrity *bi = &lim->integrity; + + if (!bi->tuple_size) { + if (bi->csum_type != BLK_INTEGRITY_CSUM_NONE || + bi->tag_size || ((bi->flags & BLK_INTEGRITY_REF_TAG))) { + pr_warn("invalid PI settings.\n"); + return -EINVAL; + } + return 0; + } + + if (!IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)) { + pr_warn("integrity support disabled.\n"); + return -EINVAL; + } + + if (bi->csum_type == BLK_INTEGRITY_CSUM_NONE && + (bi->flags & BLK_INTEGRITY_REF_TAG)) { + pr_warn("ref tag not support without checksum.\n"); + return -EINVAL; + } + + if (!bi->interval_exp) + bi->interval_exp = ilog2(lim->logical_block_size); + + return 0; +} + /* * Check that the limits in lim are valid, initialize defaults for unset * values, and cap values based on others where needed. @@ -105,6 +135,7 @@ static int blk_validate_limits(struct queue_limits *lim) { unsigned int max_hw_sectors; unsigned int logical_block_sectors; + int err; /* * Unless otherwise specified, default to 512 byte logical blocks and a @@ -230,6 +261,9 @@ static int blk_validate_limits(struct queue_limits *lim) lim->misaligned = 0; } + err = blk_validate_integrity_limits(lim); + if (err) + return err; return blk_validate_zoned_limits(lim); } @@ -263,13 +297,24 @@ int queue_limits_commit_update(struct request_queue *q, struct queue_limits *lim) __releases(q->limits_lock) { - int error = blk_validate_limits(lim); + int error; - if (!error) { - q->limits = *lim; - if (q->disk) - blk_apply_bdi_limits(q->disk->bdi, lim); + error = blk_validate_limits(lim); + if (error) + goto out_unlock; + +#ifdef CONFIG_BLK_INLINE_ENCRYPTION + if (q->crypto_profile && lim->integrity.tag_size) { + pr_warn("blk-integrity: Integrity and hardware inline encryption are not supported together.\n"); + error = -EINVAL; + goto out_unlock; } +#endif + + q->limits = *lim; + if (q->disk) + blk_apply_bdi_limits(q->disk->bdi, lim); +out_unlock: mutex_unlock(&q->limits_lock); return error; } @@ -575,6 +620,67 @@ void queue_limits_stack_bdev(struct queue_limits *t, struct block_device *bdev, } EXPORT_SYMBOL_GPL(queue_limits_stack_bdev); +/** + * queue_limits_stack_integrity - stack integrity profile + * @t: target queue limits + * @b: base queue limits + * + * Check if the integrity profile in the @b can be stacked into the + * target @t. Stacking is possible if either: + * + * a) does not have any integrity information stacked into it yet + * b) the integrity profile in @b is identical to the one in @t + * + * If @b can be stacked into @t, return %true. Else return %false and clear the + * integrity information in @t. + */ +bool queue_limits_stack_integrity(struct queue_limits *t, + struct queue_limits *b) +{ + struct blk_integrity *ti = &t->integrity; + struct blk_integrity *bi = &b->integrity; + + if (!IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)) + return true; + + if (!ti->tuple_size) { + /* inherit the settings from the first underlying device */ + if (!(ti->flags & BLK_INTEGRITY_STACKED)) { + ti->flags = BLK_INTEGRITY_DEVICE_CAPABLE | + (bi->flags & BLK_INTEGRITY_REF_TAG); + ti->csum_type = bi->csum_type; + ti->tuple_size = bi->tuple_size; + ti->pi_offset = bi->pi_offset; + ti->interval_exp = bi->interval_exp; + ti->tag_size = bi->tag_size; + goto done; + } + if (!bi->tuple_size) + goto done; + } + + if (ti->tuple_size != bi->tuple_size) + goto incompatible; + if (ti->interval_exp != bi->interval_exp) + goto incompatible; + if (ti->tag_size != bi->tag_size) + goto incompatible; + if (ti->csum_type != bi->csum_type) + goto incompatible; + if ((ti->flags & BLK_INTEGRITY_REF_TAG) != + (bi->flags & BLK_INTEGRITY_REF_TAG)) + goto incompatible; + +done: + ti->flags |= BLK_INTEGRITY_STACKED; + return true; + +incompatible: + memset(ti, 0, sizeof(*ti)); + return false; +} +EXPORT_SYMBOL_GPL(queue_limits_stack_integrity); + /** * blk_queue_update_dma_pad - update pad mask * @q: the request queue for the device diff --git a/block/t10-pi.c b/block/t10-pi.c index 2d8298a4cd3307..fb87ce3ad7efc5 100644 --- a/block/t10-pi.c +++ b/block/t10-pi.c @@ -118,7 +118,7 @@ static blk_status_t t10_pi_verify(struct blk_integrity_iter *iter, */ static void t10_pi_type1_prepare(struct request *rq) { - struct blk_integrity *bi = &rq->q->integrity; + struct blk_integrity *bi = &rq->q->limits.integrity; const int tuple_sz = bi->tuple_size; u32 ref_tag = t10_pi_ref_tag(rq); u8 offset = bi->pi_offset; @@ -169,7 +169,7 @@ static void t10_pi_type1_prepare(struct request *rq) */ static void t10_pi_type1_complete(struct request *rq, unsigned int nr_bytes) { - struct blk_integrity *bi = &rq->q->integrity; + struct blk_integrity *bi = &rq->q->limits.integrity; unsigned intervals = nr_bytes >> bi->interval_exp; const int tuple_sz = bi->tuple_size; u32 ref_tag = t10_pi_ref_tag(rq); @@ -292,7 +292,7 @@ static blk_status_t ext_pi_crc64_verify(struct blk_integrity_iter *iter, static void ext_pi_type1_prepare(struct request *rq) { - struct blk_integrity *bi = &rq->q->integrity; + struct blk_integrity *bi = &rq->q->limits.integrity; const int tuple_sz = bi->tuple_size; u64 ref_tag = ext_pi_ref_tag(rq); u8 offset = bi->pi_offset; @@ -332,7 +332,7 @@ static void ext_pi_type1_prepare(struct request *rq) static void ext_pi_type1_complete(struct request *rq, unsigned int nr_bytes) { - struct blk_integrity *bi = &rq->q->integrity; + struct blk_integrity *bi = &rq->q->limits.integrity; unsigned intervals = nr_bytes >> bi->interval_exp; const int tuple_sz = bi->tuple_size; u64 ref_tag = ext_pi_ref_tag(rq); @@ -385,7 +385,7 @@ blk_status_t blk_integrity_verify(struct blk_integrity_iter *iter, void blk_integrity_prepare(struct request *rq) { - struct blk_integrity *bi = &rq->q->integrity; + struct blk_integrity *bi = &rq->q->limits.integrity; if (!(bi->flags & BLK_INTEGRITY_REF_TAG)) return; @@ -398,7 +398,7 @@ void blk_integrity_prepare(struct request *rq) void blk_integrity_complete(struct request *rq, unsigned int nr_bytes) { - struct blk_integrity *bi = &rq->q->integrity; + struct blk_integrity *bi = &rq->q->limits.integrity; if (!(bi->flags & BLK_INTEGRITY_REF_TAG)) return; diff --git a/drivers/md/dm-core.h b/drivers/md/dm-core.h index 08700bfc3e2343..14a44c0f82868b 100644 --- a/drivers/md/dm-core.h +++ b/drivers/md/dm-core.h @@ -206,7 +206,6 @@ struct dm_table { bool integrity_supported:1; bool singleton:1; - unsigned integrity_added:1; /* * Indicates the rw permissions for the new logical device. This diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index c1cc27541673c7..2a89f8eb4713c9 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -3475,6 +3475,17 @@ static void dm_integrity_io_hints(struct dm_target *ti, struct queue_limits *lim limits->dma_alignment = limits->logical_block_size - 1; limits->discard_granularity = ic->sectors_per_block << SECTOR_SHIFT; } + + if (!ic->internal_hash) { + struct blk_integrity *bi = &limits->integrity; + + memset(bi, 0, sizeof(*bi)); + bi->tuple_size = ic->tag_size; + bi->tag_size = bi->tuple_size; + bi->interval_exp = + ic->sb->log2_sectors_per_block + SECTOR_SHIFT; + } + limits->max_integrity_segments = USHRT_MAX; } @@ -3631,19 +3642,6 @@ static int initialize_superblock(struct dm_integrity_c *ic, return 0; } -static void dm_integrity_set(struct dm_target *ti, struct dm_integrity_c *ic) -{ - struct gendisk *disk = dm_disk(dm_table_get_md(ti->table)); - struct blk_integrity bi; - - memset(&bi, 0, sizeof(bi)); - bi.tuple_size = ic->tag_size; - bi.tag_size = bi.tuple_size; - bi.interval_exp = ic->sb->log2_sectors_per_block + SECTOR_SHIFT; - - blk_integrity_register(disk, &bi); -} - static void dm_integrity_free_page_list(struct page_list *pl) { unsigned int i; @@ -4629,9 +4627,6 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned int argc, char **argv } } - if (!ic->internal_hash) - dm_integrity_set(ti, ic); - ti->num_flush_bios = 1; ti->flush_supported = true; if (ic->discard) diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index b2d5246cff2102..fd789eeb62d943 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -425,6 +425,13 @@ static int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev, q->limits.logical_block_size, q->limits.alignment_offset, (unsigned long long) start << SECTOR_SHIFT); + + /* + * Only stack the integrity profile if the target doesn't have native + * integrity support. + */ + if (!dm_target_has_integrity(ti->type)) + queue_limits_stack_integrity_bdev(limits, bdev); return 0; } @@ -702,9 +709,6 @@ int dm_table_add_target(struct dm_table *t, const char *type, t->immutable_target_type = ti->type; } - if (dm_target_has_integrity(ti->type)) - t->integrity_added = 1; - ti->table = t; ti->begin = start; ti->len = len; @@ -1119,99 +1123,6 @@ static int dm_table_build_index(struct dm_table *t) return r; } -static bool integrity_profile_exists(struct gendisk *disk) -{ - return !!blk_get_integrity(disk); -} - -/* - * Get a disk whose integrity profile reflects the table's profile. - * Returns NULL if integrity support was inconsistent or unavailable. - */ -static struct gendisk *dm_table_get_integrity_disk(struct dm_table *t) -{ - struct list_head *devices = dm_table_get_devices(t); - struct dm_dev_internal *dd = NULL; - struct gendisk *prev_disk = NULL, *template_disk = NULL; - - for (unsigned int i = 0; i < t->num_targets; i++) { - struct dm_target *ti = dm_table_get_target(t, i); - - if (!dm_target_passes_integrity(ti->type)) - goto no_integrity; - } - - list_for_each_entry(dd, devices, list) { - template_disk = dd->dm_dev->bdev->bd_disk; - if (!integrity_profile_exists(template_disk)) - goto no_integrity; - else if (prev_disk && - blk_integrity_compare(prev_disk, template_disk) < 0) - goto no_integrity; - prev_disk = template_disk; - } - - return template_disk; - -no_integrity: - if (prev_disk) - DMWARN("%s: integrity not set: %s and %s profile mismatch", - dm_device_name(t->md), - prev_disk->disk_name, - template_disk->disk_name); - return NULL; -} - -/* - * Register the mapped device for blk_integrity support if the - * underlying devices have an integrity profile. But all devices may - * not have matching profiles (checking all devices isn't reliable - * during table load because this table may use other DM device(s) which - * must be resumed before they will have an initialized integity - * profile). Consequently, stacked DM devices force a 2 stage integrity - * profile validation: First pass during table load, final pass during - * resume. - */ -static int dm_table_register_integrity(struct dm_table *t) -{ - struct mapped_device *md = t->md; - struct gendisk *template_disk = NULL; - - /* If target handles integrity itself do not register it here. */ - if (t->integrity_added) - return 0; - - template_disk = dm_table_get_integrity_disk(t); - if (!template_disk) - return 0; - - if (!integrity_profile_exists(dm_disk(md))) { - t->integrity_supported = true; - /* - * Register integrity profile during table load; we can do - * this because the final profile must match during resume. - */ - blk_integrity_register(dm_disk(md), - blk_get_integrity(template_disk)); - return 0; - } - - /* - * If DM device already has an initialized integrity - * profile the new profile should not conflict. - */ - if (blk_integrity_compare(dm_disk(md), template_disk) < 0) { - DMERR("%s: conflict with existing integrity profile: %s profile mismatch", - dm_device_name(t->md), - template_disk->disk_name); - return 1; - } - - /* Preserve existing integrity profile */ - t->integrity_supported = true; - return 0; -} - #ifdef CONFIG_BLK_INLINE_ENCRYPTION struct dm_crypto_profile { @@ -1423,12 +1334,6 @@ int dm_table_complete(struct dm_table *t) return r; } - r = dm_table_register_integrity(t); - if (r) { - DMERR("could not register integrity profile."); - return r; - } - r = dm_table_construct_crypto_profile(t); if (r) { DMERR("could not construct crypto profile."); @@ -1688,6 +1593,14 @@ int dm_calculate_queue_limits(struct dm_table *t, blk_set_stacking_limits(limits); + t->integrity_supported = true; + for (unsigned int i = 0; i < t->num_targets; i++) { + struct dm_target *ti = dm_table_get_target(t, i); + + if (!dm_target_passes_integrity(ti->type)) + t->integrity_supported = false; + } + for (unsigned int i = 0; i < t->num_targets; i++) { struct dm_target *ti = dm_table_get_target(t, i); @@ -1738,6 +1651,18 @@ int dm_calculate_queue_limits(struct dm_table *t, dm_device_name(t->md), (unsigned long long) ti->begin, (unsigned long long) ti->len); + + if (t->integrity_supported || + dm_target_has_integrity(ti->type)) { + if (!queue_limits_stack_integrity(limits, &ti_limits)) { + DMWARN("%s: adding target device (start sect %llu len %llu) " + "disabled integrity support due to incompatibility", + dm_device_name(t->md), + (unsigned long long) ti->begin, + (unsigned long long) ti->len); + t->integrity_supported = false; + } + } } /* @@ -1761,36 +1686,6 @@ int dm_calculate_queue_limits(struct dm_table *t, return validate_hardware_logical_block_alignment(t, limits); } -/* - * Verify that all devices have an integrity profile that matches the - * DM device's registered integrity profile. If the profiles don't - * match then unregister the DM device's integrity profile. - */ -static void dm_table_verify_integrity(struct dm_table *t) -{ - struct gendisk *template_disk = NULL; - - if (t->integrity_added) - return; - - if (t->integrity_supported) { - /* - * Verify that the original integrity profile - * matches all the devices in this table. - */ - template_disk = dm_table_get_integrity_disk(t); - if (template_disk && - blk_integrity_compare(dm_disk(t->md), template_disk) >= 0) - return; - } - - if (integrity_profile_exists(dm_disk(t->md))) { - DMWARN("%s: unable to establish an integrity profile", - dm_device_name(t->md)); - blk_integrity_unregister(dm_disk(t->md)); - } -} - static int device_flush_capable(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data) { @@ -2004,8 +1899,6 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, else blk_queue_flag_set(QUEUE_FLAG_NONROT, q); - dm_table_verify_integrity(t); - /* * Some devices don't use blk_integrity but still want stable pages * because they do their own checksumming. diff --git a/drivers/md/md.c b/drivers/md/md.c index aff9118ff69750..67ece2cd725f50 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2410,36 +2410,10 @@ static LIST_HEAD(pending_raid_disks); */ int md_integrity_register(struct mddev *mddev) { - struct md_rdev *rdev, *reference = NULL; - if (list_empty(&mddev->disks)) return 0; /* nothing to do */ - if (mddev_is_dm(mddev) || blk_get_integrity(mddev->gendisk)) - return 0; /* shouldn't register, or already is */ - rdev_for_each(rdev, mddev) { - /* skip spares and non-functional disks */ - if (test_bit(Faulty, &rdev->flags)) - continue; - if (rdev->raid_disk < 0) - continue; - if (!reference) { - /* Use the first rdev as the reference */ - reference = rdev; - continue; - } - /* does this rdev's profile match the reference profile? */ - if (blk_integrity_compare(reference->bdev->bd_disk, - rdev->bdev->bd_disk) < 0) - return -EINVAL; - } - if (!reference || !bdev_get_integrity(reference->bdev)) - return 0; - /* - * All component devices are integrity capable and have matching - * profiles, register the common profile for the md device. - */ - blk_integrity_register(mddev->gendisk, - bdev_get_integrity(reference->bdev)); + if (mddev_is_dm(mddev) || !blk_get_integrity(mddev->gendisk)) + return 0; /* shouldn't register */ pr_debug("md: data integrity enabled on %s\n", mdname(mddev)); if (bioset_integrity_create(&mddev->bio_set, BIO_POOL_SIZE) || @@ -2459,32 +2433,6 @@ int md_integrity_register(struct mddev *mddev) } EXPORT_SYMBOL(md_integrity_register); -/* - * Attempt to add an rdev, but only if it is consistent with the current - * integrity profile - */ -int md_integrity_add_rdev(struct md_rdev *rdev, struct mddev *mddev) -{ - struct blk_integrity *bi_mddev; - - if (mddev_is_dm(mddev)) - return 0; - - bi_mddev = blk_get_integrity(mddev->gendisk); - - if (!bi_mddev) /* nothing to do */ - return 0; - - if (blk_integrity_compare(mddev->gendisk, rdev->bdev->bd_disk) != 0) { - pr_err("%s: incompatible integrity profile for %pg\n", - mdname(mddev), rdev->bdev); - return -ENXIO; - } - - return 0; -} -EXPORT_SYMBOL(md_integrity_add_rdev); - static bool rdev_read_only(struct md_rdev *rdev) { return bdev_read_only(rdev->bdev) || @@ -5755,14 +5703,20 @@ static const struct kobj_type md_ktype = { int mdp_major = 0; /* stack the limit for all rdevs into lim */ -void mddev_stack_rdev_limits(struct mddev *mddev, struct queue_limits *lim) +int mddev_stack_rdev_limits(struct mddev *mddev, struct queue_limits *lim, + unsigned int flags) { struct md_rdev *rdev; rdev_for_each(rdev, mddev) { queue_limits_stack_bdev(lim, rdev->bdev, rdev->data_offset, mddev->gendisk->disk_name); + if ((flags & MDDEV_STACK_INTEGRITY) && + !queue_limits_stack_integrity_bdev(lim, rdev->bdev)) + return -EINVAL; } + + return 0; } EXPORT_SYMBOL_GPL(mddev_stack_rdev_limits); @@ -5777,6 +5731,14 @@ int mddev_stack_new_rdev(struct mddev *mddev, struct md_rdev *rdev) lim = queue_limits_start_update(mddev->gendisk->queue); queue_limits_stack_bdev(&lim, rdev->bdev, rdev->data_offset, mddev->gendisk->disk_name); + + if (!queue_limits_stack_integrity_bdev(&lim, rdev->bdev)) { + pr_err("%s: incompatible integrity profile for %pg\n", + mdname(mddev), rdev->bdev); + queue_limits_cancel_update(mddev->gendisk->queue); + return -ENXIO; + } + return queue_limits_commit_update(mddev->gendisk->queue, &lim); } EXPORT_SYMBOL_GPL(mddev_stack_new_rdev); diff --git a/drivers/md/md.h b/drivers/md/md.h index ca085ecad50449..6733b0b0abf999 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -809,7 +809,6 @@ extern void md_wait_for_blocked_rdev(struct md_rdev *rdev, struct mddev *mddev); extern void md_set_array_sectors(struct mddev *mddev, sector_t array_sectors); extern int md_check_no_bitmap(struct mddev *mddev); extern int md_integrity_register(struct mddev *mddev); -extern int md_integrity_add_rdev(struct md_rdev *rdev, struct mddev *mddev); extern int strict_strtoul_scaled(const char *cp, unsigned long *res, int scale); extern int mddev_init(struct mddev *mddev); @@ -908,7 +907,9 @@ void md_autostart_arrays(int part); int md_set_array_info(struct mddev *mddev, struct mdu_array_info_s *info); int md_add_new_disk(struct mddev *mddev, struct mdu_disk_info_s *info); int do_md_run(struct mddev *mddev); -void mddev_stack_rdev_limits(struct mddev *mddev, struct queue_limits *lim); +#define MDDEV_STACK_INTEGRITY (1u << 0) +int mddev_stack_rdev_limits(struct mddev *mddev, struct queue_limits *lim, + unsigned int flags); int mddev_stack_new_rdev(struct mddev *mddev, struct md_rdev *rdev); void mddev_update_io_opt(struct mddev *mddev, unsigned int nr_stripes); diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 81c01347cd24e6..62634e2a33bd0f 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -377,13 +377,18 @@ static void raid0_free(struct mddev *mddev, void *priv) static int raid0_set_limits(struct mddev *mddev) { struct queue_limits lim; + int err; blk_set_stacking_limits(&lim); lim.max_hw_sectors = mddev->chunk_sectors; lim.max_write_zeroes_sectors = mddev->chunk_sectors; lim.io_min = mddev->chunk_sectors << 9; lim.io_opt = lim.io_min * mddev->raid_disks; - mddev_stack_rdev_limits(mddev, &lim); + err = mddev_stack_rdev_limits(mddev, &lim, MDDEV_STACK_INTEGRITY); + if (err) { + queue_limits_cancel_update(mddev->gendisk->queue); + return err; + } return queue_limits_set(mddev->gendisk->queue, &lim); } diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 1f321826ef02ba..779cad62f6f8c0 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1907,9 +1907,6 @@ static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev) if (mddev->recovery_disabled == conf->recovery_disabled) return -EBUSY; - if (md_integrity_add_rdev(rdev, mddev)) - return -ENXIO; - if (rdev->raid_disk >= 0) first = last = rdev->raid_disk; @@ -3197,10 +3194,15 @@ static struct r1conf *setup_conf(struct mddev *mddev) static int raid1_set_limits(struct mddev *mddev) { struct queue_limits lim; + int err; blk_set_stacking_limits(&lim); lim.max_write_zeroes_sectors = 0; - mddev_stack_rdev_limits(mddev, &lim); + err = mddev_stack_rdev_limits(mddev, &lim, MDDEV_STACK_INTEGRITY); + if (err) { + queue_limits_cancel_update(mddev->gendisk->queue); + return err; + } return queue_limits_set(mddev->gendisk->queue, &lim); } diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index a4556d2e46bf95..5f6885b53b691a 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -2083,9 +2083,6 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev) if (rdev->saved_raid_disk < 0 && !_enough(conf, 1, -1)) return -EINVAL; - if (md_integrity_add_rdev(rdev, mddev)) - return -ENXIO; - if (rdev->raid_disk >= 0) first = last = rdev->raid_disk; @@ -3980,12 +3977,17 @@ static int raid10_set_queue_limits(struct mddev *mddev) { struct r10conf *conf = mddev->private; struct queue_limits lim; + int err; blk_set_stacking_limits(&lim); lim.max_write_zeroes_sectors = 0; lim.io_min = mddev->chunk_sectors << 9; lim.io_opt = lim.io_min * raid10_nr_stripes(conf); - mddev_stack_rdev_limits(mddev, &lim); + err = mddev_stack_rdev_limits(mddev, &lim, MDDEV_STACK_INTEGRITY); + if (err) { + queue_limits_cancel_update(mddev->gendisk->queue); + return err; + } return queue_limits_set(mddev->gendisk->queue, &lim); } diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 2bd1ce9b39226a..675c68fa6c6403 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -7708,7 +7708,7 @@ static int raid5_set_limits(struct mddev *mddev) lim.raid_partial_stripes_expensive = 1; lim.discard_granularity = stripe; lim.max_write_zeroes_sectors = 0; - mddev_stack_rdev_limits(mddev, &lim); + mddev_stack_rdev_limits(mddev, &lim, 0); rdev_for_each(rdev, mddev) queue_limits_stack_bdev(&lim, rdev->bdev, rdev->new_data_offset, mddev->gendisk->disk_name); diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 1e5aedaf8c7bd9..c5f8451b494d6c 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -1504,6 +1504,11 @@ static int btt_blk_init(struct btt *btt) }; int rc; + if (btt_meta_size(btt) && IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)) { + lim.integrity.tuple_size = btt_meta_size(btt); + lim.integrity.tag_size = btt_meta_size(btt); + } + btt->btt_disk = blk_alloc_disk(&lim, NUMA_NO_NODE); if (IS_ERR(btt->btt_disk)) return PTR_ERR(btt->btt_disk); @@ -1516,14 +1521,6 @@ static int btt_blk_init(struct btt *btt) blk_queue_flag_set(QUEUE_FLAG_NONROT, btt->btt_disk->queue); blk_queue_flag_set(QUEUE_FLAG_SYNCHRONOUS, btt->btt_disk->queue); - if (btt_meta_size(btt) && IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)) { - struct blk_integrity bi = { - .tuple_size = btt_meta_size(btt), - .tag_size = btt_meta_size(btt), - }; - blk_integrity_register(btt->btt_disk, &bi); - } - set_capacity(btt->btt_disk, btt->nlba * btt->sector_size >> 9); rc = device_add_disk(&btt->nd_btt->dev, btt->btt_disk, NULL); if (rc) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 14bac248cde4ca..5a673fa5cb2612 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1723,11 +1723,12 @@ int nvme_getgeo(struct block_device *bdev, struct hd_geometry *geo) return 0; } -static bool nvme_init_integrity(struct gendisk *disk, struct nvme_ns_head *head) +static bool nvme_init_integrity(struct gendisk *disk, struct nvme_ns_head *head, + struct queue_limits *lim) { - struct blk_integrity integrity = { }; + struct blk_integrity *bi = &lim->integrity; - blk_integrity_unregister(disk); + memset(bi, 0, sizeof(*bi)); if (!head->ms) return true; @@ -1744,14 +1745,14 @@ static bool nvme_init_integrity(struct gendisk *disk, struct nvme_ns_head *head) case NVME_NS_DPS_PI_TYPE3: switch (head->guard_type) { case NVME_NVM_NS_16B_GUARD: - integrity.csum_type = BLK_INTEGRITY_CSUM_CRC; - integrity.tag_size = sizeof(u16) + sizeof(u32); - integrity.flags |= BLK_INTEGRITY_DEVICE_CAPABLE; + bi->csum_type = BLK_INTEGRITY_CSUM_CRC; + bi->tag_size = sizeof(u16) + sizeof(u32); + bi->flags |= BLK_INTEGRITY_DEVICE_CAPABLE; break; case NVME_NVM_NS_64B_GUARD: - integrity.csum_type = BLK_INTEGRITY_CSUM_CRC64; - integrity.tag_size = sizeof(u16) + 6; - integrity.flags |= BLK_INTEGRITY_DEVICE_CAPABLE; + bi->csum_type = BLK_INTEGRITY_CSUM_CRC64; + bi->tag_size = sizeof(u16) + 6; + bi->flags |= BLK_INTEGRITY_DEVICE_CAPABLE; break; default: break; @@ -1761,16 +1762,16 @@ static bool nvme_init_integrity(struct gendisk *disk, struct nvme_ns_head *head) case NVME_NS_DPS_PI_TYPE2: switch (head->guard_type) { case NVME_NVM_NS_16B_GUARD: - integrity.csum_type = BLK_INTEGRITY_CSUM_CRC; - integrity.tag_size = sizeof(u16); - integrity.flags |= BLK_INTEGRITY_DEVICE_CAPABLE | - BLK_INTEGRITY_REF_TAG; + bi->csum_type = BLK_INTEGRITY_CSUM_CRC; + bi->tag_size = sizeof(u16); + bi->flags |= BLK_INTEGRITY_DEVICE_CAPABLE | + BLK_INTEGRITY_REF_TAG; break; case NVME_NVM_NS_64B_GUARD: - integrity.csum_type = BLK_INTEGRITY_CSUM_CRC64; - integrity.tag_size = sizeof(u16); - integrity.flags |= BLK_INTEGRITY_DEVICE_CAPABLE | - BLK_INTEGRITY_REF_TAG; + bi->csum_type = BLK_INTEGRITY_CSUM_CRC64; + bi->tag_size = sizeof(u16); + bi->flags |= BLK_INTEGRITY_DEVICE_CAPABLE | + BLK_INTEGRITY_REF_TAG; break; default: break; @@ -1780,9 +1781,8 @@ static bool nvme_init_integrity(struct gendisk *disk, struct nvme_ns_head *head) break; } - integrity.tuple_size = head->ms; - integrity.pi_offset = head->pi_offset; - blk_integrity_register(disk, &integrity); + bi->tuple_size = head->ms; + bi->pi_offset = head->pi_offset; return true; } @@ -2105,11 +2105,6 @@ static int nvme_update_ns_info_block(struct nvme_ns *ns, if (IS_ENABLED(CONFIG_BLK_DEV_ZONED) && ns->head->ids.csi == NVME_CSI_ZNS) nvme_update_zone_info(ns, &lim, &zi); - ret = queue_limits_commit_update(ns->disk->queue, &lim); - if (ret) { - blk_mq_unfreeze_queue(ns->disk->queue); - goto out; - } /* * Register a metadata profile for PI, or the plain non-integrity NVMe @@ -2117,9 +2112,15 @@ static int nvme_update_ns_info_block(struct nvme_ns *ns, * I/O to namespaces with metadata except when the namespace supports * PI, as it can strip/insert in that case. */ - if (!nvme_init_integrity(ns->disk, ns->head)) + if (!nvme_init_integrity(ns->disk, ns->head, &lim)) capacity = 0; + ret = queue_limits_commit_update(ns->disk->queue, &lim); + if (ret) { + blk_mq_unfreeze_queue(ns->disk->queue); + goto out; + } + set_capacity_and_notify(ns->disk, capacity); /* @@ -2191,14 +2192,6 @@ static int nvme_update_ns_info(struct nvme_ns *ns, struct nvme_ns_info *info) struct queue_limits lim; blk_mq_freeze_queue(ns->head->disk->queue); - if (unsupported) - ns->head->disk->flags |= GENHD_FL_HIDDEN; - else - nvme_init_integrity(ns->head->disk, ns->head); - set_capacity_and_notify(ns->head->disk, get_capacity(ns->disk)); - set_disk_ro(ns->head->disk, nvme_ns_is_readonly(ns, info)); - nvme_mpath_revalidate_paths(ns); - /* * queue_limits mixes values that are the hardware limitations * for bio splitting with what is the device configuration. @@ -2221,7 +2214,16 @@ static int nvme_update_ns_info(struct nvme_ns *ns, struct nvme_ns_info *info) lim.io_opt = ns_lim->io_opt; queue_limits_stack_bdev(&lim, ns->disk->part0, 0, ns->head->disk->disk_name); + if (unsupported) + ns->head->disk->flags |= GENHD_FL_HIDDEN; + else + nvme_init_integrity(ns->head->disk, ns->head, &lim); ret = queue_limits_commit_update(ns->head->disk->queue, &lim); + + set_capacity_and_notify(ns->head->disk, get_capacity(ns->disk)); + set_disk_ro(ns->head->disk, nvme_ns_is_readonly(ns, info)); + nvme_mpath_revalidate_paths(ns); + blk_mq_unfreeze_queue(ns->head->disk->queue); } diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 67f24607b862a3..85b45345a27739 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -799,7 +799,7 @@ static unsigned char sd_setup_protect_cmnd(struct scsi_cmnd *scmd, unsigned int dix, unsigned int dif) { struct request *rq = scsi_cmd_to_rq(scmd); - struct blk_integrity *bi = &rq->q->integrity; + struct blk_integrity *bi = &rq->q->limits.integrity; unsigned int prot_op = sd_prot_op(rq_data_dir(rq), dix, dif); unsigned int protect = 0; @@ -2474,11 +2474,13 @@ static int sd_read_protection_type(struct scsi_disk *sdkp, unsigned char *buffer return 0; } -static void sd_config_protection(struct scsi_disk *sdkp) +static void sd_config_protection(struct scsi_disk *sdkp, + struct queue_limits *lim) { struct scsi_device *sdp = sdkp->device; - sd_dif_config_host(sdkp); + if (IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)) + sd_dif_config_host(sdkp, lim); if (!sdkp->protection_type) return; @@ -3669,7 +3671,7 @@ static int sd_revalidate_disk(struct gendisk *disk) sd_read_app_tag_own(sdkp, buffer); sd_read_write_same(sdkp, buffer); sd_read_security(sdkp, buffer); - sd_config_protection(sdkp); + sd_config_protection(sdkp, &lim); } /* diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index b4170b17bad47a..726f1613f6cb56 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -220,17 +220,7 @@ static inline sector_t sectors_to_logical(struct scsi_device *sdev, sector_t sec return sector >> (ilog2(sdev->sector_size) - 9); } -#ifdef CONFIG_BLK_DEV_INTEGRITY - -extern void sd_dif_config_host(struct scsi_disk *); - -#else /* CONFIG_BLK_DEV_INTEGRITY */ - -static inline void sd_dif_config_host(struct scsi_disk *disk) -{ -} - -#endif /* CONFIG_BLK_DEV_INTEGRITY */ +void sd_dif_config_host(struct scsi_disk *sdkp, struct queue_limits *lim); static inline int sd_is_zoned(struct scsi_disk *sdkp) { diff --git a/drivers/scsi/sd_dif.c b/drivers/scsi/sd_dif.c index 6f0921c7db787b..4c1c0595f2d1fc 100644 --- a/drivers/scsi/sd_dif.c +++ b/drivers/scsi/sd_dif.c @@ -24,55 +24,50 @@ /* * Configure exchange of protection information between OS and HBA. */ -void sd_dif_config_host(struct scsi_disk *sdkp) +void sd_dif_config_host(struct scsi_disk *sdkp, struct queue_limits *lim) { struct scsi_device *sdp = sdkp->device; - struct gendisk *disk = sdkp->disk; u8 type = sdkp->protection_type; - struct blk_integrity bi; + struct blk_integrity *bi = &lim->integrity; int dif, dix; + memset(bi, 0, sizeof(*bi)); + dif = scsi_host_dif_capable(sdp->host, type); dix = scsi_host_dix_capable(sdp->host, type); if (!dix && scsi_host_dix_capable(sdp->host, 0)) { - dif = 0; dix = 1; + dif = 0; + dix = 1; } - if (!dix) { - blk_integrity_unregister(disk); + if (!dix) return; - } - - memset(&bi, 0, sizeof(bi)); /* Enable DMA of protection information */ if (scsi_host_get_guard(sdkp->device->host) & SHOST_DIX_GUARD_IP) - bi.csum_type = BLK_INTEGRITY_CSUM_IP; + bi->csum_type = BLK_INTEGRITY_CSUM_IP; else - bi.csum_type = BLK_INTEGRITY_CSUM_CRC; + bi->csum_type = BLK_INTEGRITY_CSUM_CRC; if (type != T10_PI_TYPE3_PROTECTION) - bi.flags |= BLK_INTEGRITY_REF_TAG; + bi->flags |= BLK_INTEGRITY_REF_TAG; - bi.tuple_size = sizeof(struct t10_pi_tuple); + bi->tuple_size = sizeof(struct t10_pi_tuple); if (dif && type) { - bi.flags |= BLK_INTEGRITY_DEVICE_CAPABLE; + bi->flags |= BLK_INTEGRITY_DEVICE_CAPABLE; if (!sdkp->ATO) - goto out; + return; if (type == T10_PI_TYPE3_PROTECTION) - bi.tag_size = sizeof(u16) + sizeof(u32); + bi->tag_size = sizeof(u16) + sizeof(u32); else - bi.tag_size = sizeof(u16); + bi->tag_size = sizeof(u16); } sd_first_printk(KERN_NOTICE, sdkp, "Enabling DIX %s, application tag size %u bytes\n", - blk_integrity_profile_name(&bi), bi.tag_size); -out: - blk_integrity_register(disk, &bi); + blk_integrity_profile_name(bi), bi->tag_size); } - diff --git a/include/linux/blk-integrity.h b/include/linux/blk-integrity.h index a4bf2c78776c06..4aa679cace1739 100644 --- a/include/linux/blk-integrity.h +++ b/include/linux/blk-integrity.h @@ -11,6 +11,7 @@ enum blk_integrity_flags { BLK_INTEGRITY_NOGENERATE = 1 << 1, BLK_INTEGRITY_DEVICE_CAPABLE = 1 << 2, BLK_INTEGRITY_REF_TAG = 1 << 3, + BLK_INTEGRITY_STACKED = 1 << 4, }; enum blk_integerity_checksum { @@ -32,9 +33,7 @@ struct blk_integrity_iter { const char *blk_integrity_profile_name(struct blk_integrity *bi); #ifdef CONFIG_BLK_DEV_INTEGRITY -void blk_integrity_register(struct gendisk *, struct blk_integrity *); -void blk_integrity_unregister(struct gendisk *); -int blk_integrity_compare(struct gendisk *, struct gendisk *); +bool queue_limits_stack_integrity(struct queue_limits *t, struct queue_limits *b); int blk_rq_map_integrity_sg(struct request_queue *, struct bio *, struct scatterlist *); int blk_rq_count_integrity_sg(struct request_queue *, struct bio *); @@ -42,14 +41,14 @@ int blk_rq_count_integrity_sg(struct request_queue *, struct bio *); static inline bool blk_integrity_queue_supports_integrity(struct request_queue *q) { - return q->integrity.tuple_size; + return q->limits.integrity.tuple_size; } static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk) { if (!blk_integrity_queue_supports_integrity(disk->queue)) return NULL; - return &disk->queue->integrity; + return &disk->queue->limits.integrity; } static inline struct blk_integrity * @@ -102,6 +101,11 @@ static inline struct bio_vec *rq_integrity_vec(struct request *rq) return rq->bio->bi_integrity->bip_vec; } #else /* CONFIG_BLK_DEV_INTEGRITY */ +static inline bool queue_limits_stack_integrity(struct queue_limits *t, + struct queue_limits *b) +{ + return true; +} static inline int blk_rq_count_integrity_sg(struct request_queue *q, struct bio *b) { @@ -126,17 +130,6 @@ blk_integrity_queue_supports_integrity(struct request_queue *q) { return false; } -static inline int blk_integrity_compare(struct gendisk *a, struct gendisk *b) -{ - return 0; -} -static inline void blk_integrity_register(struct gendisk *d, - struct blk_integrity *b) -{ -} -static inline void blk_integrity_unregister(struct gendisk *d) -{ -} static inline unsigned short queue_max_integrity_segments(const struct request_queue *q) { @@ -164,4 +157,11 @@ static inline struct bio_vec *rq_integrity_vec(struct request *rq) return NULL; } #endif /* CONFIG_BLK_DEV_INTEGRITY */ + +static inline bool queue_limits_stack_integrity_bdev(struct queue_limits *t, + struct block_device *bdev) +{ + return queue_limits_stack_integrity(t, &bdev->bd_disk->queue->limits); +} + #endif /* _LINUX_BLK_INTEGRITY_H */ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 150910a4d4e6ae..1102d822021928 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -327,6 +327,8 @@ struct queue_limits { * due to possible offsets. */ unsigned int dma_alignment; + + struct blk_integrity integrity; }; typedef int (*report_zones_cb)(struct blk_zone *zone, unsigned int idx, @@ -412,10 +414,6 @@ struct request_queue { struct queue_limits limits; -#ifdef CONFIG_BLK_DEV_INTEGRITY - struct blk_integrity integrity; -#endif /* CONFIG_BLK_DEV_INTEGRITY */ - #ifdef CONFIG_PM struct device *dev; enum rpm_status rpm_status; @@ -1293,11 +1291,10 @@ static inline bool bdev_stable_writes(struct block_device *bdev) { struct request_queue *q = bdev_get_queue(bdev); -#ifdef CONFIG_BLK_DEV_INTEGRITY /* BLK_INTEGRITY_CSUM_NONE is not available in blkdev.h */ - if (q->integrity.csum_type != 0) + if (IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY) && + q->limits.integrity.csum_type != 0) return true; -#endif return test_bit(QUEUE_FLAG_STABLE_WRITES, &q->queue_flags); } diff --git a/include/linux/t10-pi.h b/include/linux/t10-pi.h index d2bafb76badfb9..1773610010ebaf 100644 --- a/include/linux/t10-pi.h +++ b/include/linux/t10-pi.h @@ -39,12 +39,8 @@ struct t10_pi_tuple { static inline u32 t10_pi_ref_tag(struct request *rq) { - unsigned int shift = ilog2(queue_logical_block_size(rq->q)); + unsigned int shift = rq->q->limits.integrity.interval_exp; -#ifdef CONFIG_BLK_DEV_INTEGRITY - if (rq->q->integrity.interval_exp) - shift = rq->q->integrity.interval_exp; -#endif return blk_rq_pos(rq) >> (shift - SECTOR_SHIFT) & 0xffffffff; } @@ -65,12 +61,8 @@ static inline u64 lower_48_bits(u64 n) static inline u64 ext_pi_ref_tag(struct request *rq) { - unsigned int shift = ilog2(queue_logical_block_size(rq->q)); + unsigned int shift = rq->q->limits.integrity.interval_exp; -#ifdef CONFIG_BLK_DEV_INTEGRITY - if (rq->q->integrity.interval_exp) - shift = rq->q->integrity.interval_exp; -#endif return lower_48_bits(blk_rq_pos(rq) >> (shift - SECTOR_SHIFT)); }