From: Max Gurtovoy <maxg@mellanox.com>
To: linux-nvme@lists.infradead.org, kbusch@kernel.org, hch@lst.de,
sagi@grimberg.me
Cc: vladimirk@mellanox.com, idanb@mellanox.com, israelr@mellanox.com,
shlomin@mellanox.com, oren@mellanox.com, maxg@mellanox.com
Subject: [PATCH 08/15] nvmet: Add metadata characteristics for a namespace
Date: Tue, 5 Nov 2019 18:20:19 +0200 [thread overview]
Message-ID: <20191105162026.183901-10-maxg@mellanox.com> (raw)
In-Reply-To: <20191105162026.183901-1-maxg@mellanox.com>
From: Israel Rukshin <israelr@mellanox.com>
This is a preparation for adding metadata (T10-PI) over fabric support.
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
---
drivers/nvme/target/io-cmd-bdev.c | 21 +++++++++++++++++++++
drivers/nvme/target/nvmet.h | 3 +++
2 files changed, 24 insertions(+)
diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c
index b6fca0e..b6122aa7 100644
--- a/drivers/nvme/target/io-cmd-bdev.c
+++ b/drivers/nvme/target/io-cmd-bdev.c
@@ -50,6 +50,7 @@ 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;
+ struct blk_integrity *bi;
ns->bdev = blkdev_get_by_path(ns->device_path,
FMODE_READ | FMODE_WRITE, NULL);
@@ -64,6 +65,26 @@ 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;
+ 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 {
+ pr_err("block device %s: unsupported metadata type\n",
+ ns->device_path);
+ return -EINVAL;
+ }
+ } else {
+ ns->ms = 0;
+ }
+
+ pr_debug("ms %d pi_type %d\n", ns->ms, ns->prot_type);
+
return 0;
}
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
index 8433218..8ae7c70 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
@@ -76,6 +77,8 @@ 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
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next prev parent reply other threads:[~2019-11-05 16:21 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-05 16:20 [PATCH 00/15] nvme-rdma/nvmet-rdma: Add metadata/T10-PI support Max Gurtovoy
2019-11-05 16:20 ` [PATCH] nvme-cli/fabrics: Add pi_enable param to connect cmd Max Gurtovoy
2019-11-07 2:36 ` Martin K. Petersen
2019-11-07 12:02 ` Max Gurtovoy
2019-11-09 1:55 ` Martin K. Petersen
2019-11-10 9:25 ` Max Gurtovoy
2019-11-12 17:47 ` Sagi Grimberg
2019-11-12 18:14 ` James Smart
2019-11-12 18:23 ` Sagi Grimberg
2019-11-05 16:20 ` [PATCH 01/15] nvme-fabrics: allow user enabling metadata/T10-PI support Max Gurtovoy
2019-11-12 17:48 ` Sagi Grimberg
2019-11-05 16:20 ` [PATCH 02/15] nvme: Fail __nvme_revalidate_disk in case of a spec violation Max Gurtovoy
2019-11-05 17:49 ` Christoph Hellwig
2019-11-12 17:52 ` Sagi Grimberg
2019-11-05 16:20 ` [PATCH 03/15] nvme: Introduce max_integrity_segments ctrl attribute Max Gurtovoy
2019-11-05 17:49 ` Christoph Hellwig
2019-11-12 17:53 ` Sagi Grimberg
2019-11-05 16:20 ` [PATCH 04/15] nvme: Inline nvme_ns_has_pi function Max Gurtovoy
2019-11-05 17:50 ` Christoph Hellwig
2019-11-05 16:20 ` [PATCH 05/15] nvme-rdma: Add metadata/T10-PI support Max Gurtovoy
2019-11-05 17:58 ` Christoph Hellwig
2019-11-20 10:41 ` Max Gurtovoy
2019-11-12 18:22 ` Sagi Grimberg
2019-11-13 14:35 ` Max Gurtovoy
2019-11-14 23:57 ` Sagi Grimberg
2019-11-05 16:20 ` [PATCH 06/15] block: Introduce BIP_NOMAP_INTEGRITY bip_flag Max Gurtovoy
2019-11-05 17:52 ` Christoph Hellwig
2019-11-07 2:43 ` Martin K. Petersen
2019-11-07 13:29 ` Max Gurtovoy
2019-11-09 2:10 ` Martin K. Petersen
2019-11-12 10:40 ` Max Gurtovoy
2019-11-05 16:20 ` [PATCH 07/15] nvmet: Prepare metadata request Max Gurtovoy
2019-11-05 16:20 ` Max Gurtovoy [this message]
2019-11-05 17:59 ` [PATCH 08/15] nvmet: Add metadata characteristics for a namespace Christoph Hellwig
2019-11-12 18:38 ` Sagi Grimberg
2019-11-05 16:20 ` [PATCH 09/15] nvmet: Rename nvmet_rw_len to nvmet_rw_data_len Max Gurtovoy
2019-11-05 17:59 ` Christoph Hellwig
2019-11-12 18:39 ` Sagi Grimberg
2019-11-05 16:20 ` [PATCH 10/15] nvmet: Rename nvmet_check_data_len to nvmet_check_transfer_len Max Gurtovoy
2019-11-05 18:00 ` Christoph Hellwig
2019-11-12 18:43 ` Sagi Grimberg
2019-11-05 16:20 ` [PATCH 11/15] nvmet: Introduce nvmet_rw_prot_len and nvmet_ns_has_pi Max Gurtovoy
2019-11-05 18:00 ` Christoph Hellwig
2019-11-05 16:20 ` [PATCH 12/15] nvme: Add Metadata Capabilities enumerations Max Gurtovoy
2019-11-05 16:20 ` [PATCH 13/15] nvmet: Add metadata/T10-PI support Max Gurtovoy
2019-11-05 16:20 ` [PATCH 14/15] nvmet: Add metadata support for block devices Max Gurtovoy
2019-11-05 16:20 ` [PATCH 15/15] nvmet-rdma: Add metadata/T10-PI support Max Gurtovoy
2019-11-05 18:02 ` Christoph Hellwig
2019-11-07 13:43 ` Max Gurtovoy
2019-11-12 18:34 ` Sagi Grimberg
2019-11-13 13:56 ` Max Gurtovoy
2019-11-14 23:45 ` Sagi Grimberg
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