From: Max Gurtovoy <maxg@mellanox.com>
To: linux-nvme@lists.infradead.org, sagi@grimberg.me,
linux-rdma@vger.kernel.org, kbusch@kernel.org, hch@lst.de,
martin.petersen@oracle.com
Cc: vladimirk@mellanox.com, idanb@mellanox.com, maxg@mellanox.com,
israelr@mellanox.com, axboe@kernel.dk, shlomin@mellanox.com
Subject: [PATCH 10/19] nvmet: Add metadata characteristics for a namespace
Date: Mon, 24 Feb 2020 18:45:35 +0200 [thread overview]
Message-ID: <20200224164544.219438-12-maxg@mellanox.com> (raw)
In-Reply-To: <20200224164544.219438-1-maxg@mellanox.com>
From: Israel Rukshin <israelr@mellanox.com>
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 <israelr@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
---
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 ea0e596..97131e2 100644
--- a/drivers/nvme/target/io-cmd-bdev.c
+++ b/drivers/nvme/target/io-cmd-bdev.c
@@ -50,6 +50,9 @@ void nvmet_bdev_set_limits(struct block_device *bdev, struct nvme_id_ns *id)
int nvmet_bdev_ns_enable(struct nvmet_ns *ns)
{
int ret;
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+ struct blk_integrity *bi;
+#endif
ns->bdev = blkdev_get_by_path(ns->device_path,
FMODE_READ | FMODE_WRITE, NULL);
@@ -64,6 +67,25 @@ 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->prot_type = 0;
+ ns->ms = 0;
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+ bi = bdev_get_integrity(ns->bdev);
+ if (bi) {
+ ns->ms = bi->tuple_size;
+ if (bi->profile == &t10_pi_type1_crc)
+ ns->prot_type = NVME_NS_DPS_PI_TYPE1;
+ else if (bi->profile == &t10_pi_type3_crc)
+ ns->prot_type = NVME_NS_DPS_PI_TYPE3;
+ else
+ /* Unsupported metadata type */
+ ns->ms = 0;
+ }
+
+ pr_debug("ms %d pi_type %d\n", ns->ms, ns->prot_type);
+#endif
+
return 0;
}
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
index a0f29e6..562819c 100644
--- a/drivers/nvme/target/nvmet.h
+++ b/drivers/nvme/target/nvmet.h
@@ -19,6 +19,7 @@
#include <linux/rcupdate.h>
#include <linux/blkdev.h>
#include <linux/radix-tree.h>
+#include <linux/t10-pi.h>
#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 prot_type;
+ int ms;
};
static inline struct nvmet_ns *to_nvmet_ns(struct config_item *item)
--
1.8.3.1
next prev parent reply other threads:[~2020-02-24 16:45 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-24 16:45 [PATCH 00/19 V4] nvme-rdma/nvmet-rdma: Add metadata/T10-PI support Max Gurtovoy
2020-02-24 16:45 ` [PATCH] nvme-cli/fabrics: Add pi_enable param to connect cmd Max Gurtovoy
2020-02-24 16:45 ` [PATCH 01/19] nvme: Introduce namespace features flag Max Gurtovoy
2020-02-24 16:45 ` [PATCH 02/19] nvme: Add has_pi field to the nvme_req structure Max Gurtovoy
2020-02-24 16:45 ` [PATCH 03/19] nvme: Enforce extended LBA format for fabrics metadata Max Gurtovoy
2020-02-24 16:45 ` [PATCH 04/19] nvme: Introduce max_integrity_segments ctrl attribute Max Gurtovoy
2020-02-24 16:45 ` [PATCH 05/19] nvme-fabrics: Allow user enabling metadata/T10-PI support Max Gurtovoy
2020-02-24 16:45 ` [PATCH 06/19] nvme: Introduce NVME_INLINE_PROT_SG_CNT Max Gurtovoy
2020-02-24 16:45 ` [PATCH 07/19] nvme-rdma: Introduce nvme_rdma_sgl structure Max Gurtovoy
2020-02-24 16:45 ` [PATCH 08/19] nvme-rdma: Add metadata/T10-PI support Max Gurtovoy
2020-02-24 16:45 ` [PATCH 09/19] nvmet: Prepare metadata request Max Gurtovoy
2020-02-24 16:45 ` Max Gurtovoy [this message]
2020-02-24 16:45 ` [PATCH 11/19] nvmet: Rename nvmet_rw_len to nvmet_rw_data_len Max Gurtovoy
2020-02-24 16:45 ` [PATCH 12/19] nvmet: Rename nvmet_check_data_len to nvmet_check_transfer_len Max Gurtovoy
2020-02-24 16:45 ` [PATCH 13/19] nvme: Add Metadata Capabilities enumerations Max Gurtovoy
2020-02-24 16:45 ` [PATCH 14/19] nvmet: Add mdts setting op for controllers Max Gurtovoy
2020-02-24 16:45 ` [PATCH 15/19] nvmet: Add metadata/T10-PI support Max Gurtovoy
2020-02-24 16:45 ` [PATCH 16/19] nvmet: Add metadata support for block devices Max Gurtovoy
2020-02-24 16:45 ` [PATCH 17/19] RDMA/rw: Expose maximal page list for a device per 1 MR Max Gurtovoy
2020-02-24 16:45 ` [PATCH 18/19] nvmet-rdma: Implement set_mdts controller op Max Gurtovoy
2020-02-24 16:45 ` [PATCH 19/19] nvmet-rdma: Add metadata/T10-PI support Max Gurtovoy
2020-02-24 18:13 ` [PATCH 00/19 V4] nvme-rdma/nvmet-rdma: " James Smart
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