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(mtr-vdi-031.wap.labs.mlnx [10.209.102.136]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 044FvtCM017882; Mon, 4 May 2020 18:57:56 +0300 From: Max Gurtovoy To: maxg@mellanox.com, linux-nvme@lists.infradead.org, kbusch@kernel.org, hch@lst.de, sagi@grimberg.me, martin.petersen@oracle.com, jsmart2021@gmail.com, axboe@kernel.dk Subject: [PATCH 10/16] nvmet: add metadata characteristics for a namespace Date: Mon, 4 May 2020 18:57:49 +0300 Message-Id: <20200504155755.221125-11-maxg@mellanox.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200504155755.221125-1-maxg@mellanox.com> References: <20200504155755.221125-1-maxg@mellanox.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200504_085805_366155_A331F17B X-CRM114-Status: GOOD ( 10.13 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vladimirk@mellanox.com, shlomin@mellanox.com, israelr@mellanox.com, idanb@mellanox.com, oren@mellanox.com, nitzanc@mellanox.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Israel Rukshin Fill those namespace fields from the block device format for adding metadata (T10-PI) over fabric support with block devices. Signed-off-by: Israel Rukshin Signed-off-by: Max Gurtovoy Reviewed-by: Martin K. Petersen Reviewed-by: Christoph Hellwig --- drivers/nvme/target/io-cmd-bdev.c | 22 ++++++++++++++++++++++ drivers/nvme/target/nvmet.h | 3 +++ 2 files changed, 25 insertions(+) diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c index 0427e04..45dc644 100644 --- a/drivers/nvme/target/io-cmd-bdev.c +++ b/drivers/nvme/target/io-cmd-bdev.c @@ -47,6 +47,22 @@ void nvmet_bdev_set_limits(struct block_device *bdev, struct nvme_id_ns *id) id->nows = to0based(ql->io_opt / ql->logical_block_size); } +static void nvmet_bdev_ns_enable_integrity(struct nvmet_ns *ns) +{ + struct blk_integrity *bi = bdev_get_integrity(ns->bdev); + + if (bi) { + ns->metadata_size = bi->tuple_size; + if (bi->profile == &t10_pi_type1_crc) + 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; + } +} + int nvmet_bdev_ns_enable(struct nvmet_ns *ns) { int ret; @@ -64,6 +80,12 @@ int nvmet_bdev_ns_enable(struct nvmet_ns *ns) } ns->size = i_size_read(ns->bdev->bd_inode); ns->blksize_shift = blksize_bits(bdev_logical_block_size(ns->bdev)); + + ns->pi_type = 0; + ns->metadata_size = 0; + if (IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)) + nvmet_bdev_ns_enable_integrity(ns); + return 0; } diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index 3d981eb..b9fb57b 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -19,6 +19,7 @@ #include #include #include +#include #define NVMET_ASYNC_EVENTS 4 #define NVMET_ERROR_LOG_SLOTS 128 @@ -77,6 +78,8 @@ struct nvmet_ns { int use_p2pmem; struct pci_dev *p2p_dev; + int pi_type; + int metadata_size; }; static inline struct nvmet_ns *to_nvmet_ns(struct config_item *item) -- 1.8.3.1 _______________________________________________ linux-nvme mailing list linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme