From: Max Gurtovoy <maxg@mellanox.com>
To: linux-nvme@lists.infradead.org, kbusch@kernel.org, hch@lst.de,
sagi@grimberg.me, martin.petersen@oracle.com
Cc: axboe@kernel.dk, vladimirk@mellanox.com, shlomin@mellanox.com,
israelr@mellanox.com, idanb@mellanox.com, oren@mellanox.com,
maxg@mellanox.com
Subject: [PATCH 04/16] nvme-fabrics: Allow user enabling metadata/T10-PI support
Date: Mon, 2 Dec 2019 16:48:00 +0200 [thread overview]
Message-ID: <20191202144812.147686-6-maxg@mellanox.com> (raw)
In-Reply-To: <20191202144812.147686-1-maxg@mellanox.com>
From: Israel Rukshin <israelr@mellanox.com>
Preparation for adding metadata (T10-PI) over fabric support. This will
allow end-to-end protection information passthrough and validation for
NVMe over Fabric.
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
---
drivers/nvme/host/core.c | 3 ++-
drivers/nvme/host/fabrics.c | 11 +++++++++++
drivers/nvme/host/fabrics.h | 3 +++
3 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 3c1516fc5288..1ce15bddf390 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1860,7 +1860,8 @@ static int __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
* controller.
*/
if (ns->ctrl->ops->flags & NVME_F_METADATA_SUPPORTED) {
- if (ns->ctrl->ops->flags & NVME_F_FABRICS ||
+ if ((ns->ctrl->ops->flags & NVME_F_FABRICS &&
+ ns->ctrl->opts->pi_enable) ||
!(ns->features & NVME_NS_EXT_LBAS))
ns->features |= NVME_NS_DIX_SUPPORTED;
}
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 74b8818ac9a1..c09230e18980 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -612,6 +612,7 @@ static const match_table_t opt_tokens = {
{ NVMF_OPT_NR_WRITE_QUEUES, "nr_write_queues=%d" },
{ NVMF_OPT_NR_POLL_QUEUES, "nr_poll_queues=%d" },
{ NVMF_OPT_TOS, "tos=%d" },
+ { NVMF_OPT_PI_ENABLE, "pi_enable" },
{ NVMF_OPT_ERR, NULL }
};
@@ -634,6 +635,7 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
opts->hdr_digest = false;
opts->data_digest = false;
opts->tos = -1; /* < 0 == use transport default */
+ opts->pi_enable = false;
options = o = kstrdup(buf, GFP_KERNEL);
if (!options)
@@ -867,6 +869,15 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
}
opts->tos = token;
break;
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+ case NVMF_OPT_PI_ENABLE:
+ if (opts->discovery_nqn) {
+ pr_debug("Ignoring pi_enable value for discovery controller\n");
+ break;
+ }
+ opts->pi_enable = true;
+ break;
+#endif
default:
pr_warn("unknown parameter or missing value '%s' in ctrl creation request\n",
p);
diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
index a0ec40ab62ee..773f74873a9e 100644
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -56,6 +56,7 @@ enum {
NVMF_OPT_NR_WRITE_QUEUES = 1 << 17,
NVMF_OPT_NR_POLL_QUEUES = 1 << 18,
NVMF_OPT_TOS = 1 << 19,
+ NVMF_OPT_PI_ENABLE = 1 << 20,
};
/**
@@ -89,6 +90,7 @@ enum {
* @nr_write_queues: number of queues for write I/O
* @nr_poll_queues: number of queues for polling I/O
* @tos: type of service
+ * @pi_enable: Enable metadata (T10-PI) support
*/
struct nvmf_ctrl_options {
unsigned mask;
@@ -111,6 +113,7 @@ struct nvmf_ctrl_options {
unsigned int nr_write_queues;
unsigned int nr_poll_queues;
int tos;
+ bool pi_enable;
};
/*
--
2.16.3
_______________________________________________
linux-nvme mailing list
linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme
next prev parent reply other threads:[~2019-12-02 14:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-02 14:47 [PATCH 00/16 V2] nvme-rdma/nvmet-rdma: Add metadata/T10-PI support Max Gurtovoy
2019-12-02 14:47 ` [PATCH] nvme-cli/fabrics: Add pi_enable param to connect cmd Max Gurtovoy
2019-12-02 14:47 ` [PATCH 01/16] nvme: Introduce namespace features flag Max Gurtovoy
2019-12-04 8:41 ` Christoph Hellwig
2019-12-02 14:47 ` [PATCH 02/16] nvme: Enforce extended LBA format for fabrics metadata Max Gurtovoy
2019-12-02 14:47 ` [PATCH 03/16] nvme: Introduce max_integrity_segments ctrl attribute Max Gurtovoy
2019-12-02 14:48 ` Max Gurtovoy [this message]
2019-12-02 14:48 ` [PATCH 05/16] nvme: Introduce NVME_INLINE_PROT_SG_CNT Max Gurtovoy
2019-12-02 14:48 ` [PATCH 06/16] nvme-rdma: Introduce nvme_rdma_sgl structure Max Gurtovoy
2019-12-02 14:48 ` [PATCH 07/16] nvme-rdma: Add metadata/T10-PI support Max Gurtovoy
2020-01-22 21:57 ` James Smart
2020-01-23 9:59 ` Max Gurtovoy
2020-01-23 15:34 ` James Smart
2020-01-23 18:52 ` James Smart
2019-12-02 14:48 ` [PATCH 08/16] block: Add a BIP_MAPPED_INTEGRITY check to complete_fn Max Gurtovoy
2019-12-02 14:48 ` [PATCH 09/16] nvmet: Prepare metadata request Max Gurtovoy
2019-12-02 14:48 ` [PATCH 10/16] nvmet: Add metadata characteristics for a namespace Max Gurtovoy
2019-12-02 14:48 ` [PATCH 11/16] nvmet: Rename nvmet_rw_len to nvmet_rw_data_len Max Gurtovoy
2019-12-02 14:48 ` [PATCH 12/16] nvmet: Rename nvmet_check_data_len to nvmet_check_transfer_len Max Gurtovoy
2019-12-02 14:48 ` [PATCH 13/16] nvme: Add Metadata Capabilities enumerations Max Gurtovoy
2019-12-02 14:48 ` [PATCH 14/16] nvmet: Add metadata/T10-PI support Max Gurtovoy
2019-12-02 14:48 ` [PATCH 15/16] nvmet: Add metadata support for block devices Max Gurtovoy
2019-12-02 14:48 ` [PATCH 16/16] nvmet-rdma: Add metadata/T10-PI support Max Gurtovoy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191202144812.147686-6-maxg@mellanox.com \
--to=maxg@mellanox.com \
--cc=axboe@kernel.dk \
--cc=hch@lst.de \
--cc=idanb@mellanox.com \
--cc=israelr@mellanox.com \
--cc=kbusch@kernel.org \
--cc=linux-nvme@lists.infradead.org \
--cc=martin.petersen@oracle.com \
--cc=oren@mellanox.com \
--cc=sagi@grimberg.me \
--cc=shlomin@mellanox.com \
--cc=vladimirk@mellanox.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).