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| author | Israel Rukshin <israelr@mellanox.com> | 2020-05-19 17:06:01 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-05-27 07:12:40 +0200 |
| commit | ea52ac1c6605fbd25347fabf46233e260dd92eb2 (patch) | |
| tree | 0a8913baad0cbf3cc2a5c056cb437afe711961f4 /drivers/nvme/target/configfs.c | |
| parent | 39481fbd14ee272edd419d73a98bc637e2a3fd35 (diff) | |
nvmet: add metadata/T10-PI support
Expose the namespace metadata format when PI is enabled. The user needs
to enable the capability per subsystem and per port. The other metadata
properties are taken from the namespace/bdev.
Usage example:
echo 1 > /config/nvmet/subsystems/${NAME}/attr_pi_enable
echo 1 > /config/nvmet/ports/${PORT_NUM}/param_pi_enable
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme/target/configfs.c')
| -rw-r--r-- | drivers/nvme/target/configfs.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index 17c529260e12..419e0d4ce79b 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -248,6 +248,36 @@ static ssize_t nvmet_param_inline_data_size_store(struct config_item *item, CONFIGFS_ATTR(nvmet_, param_inline_data_size); +#ifdef CONFIG_BLK_DEV_INTEGRITY +static ssize_t nvmet_param_pi_enable_show(struct config_item *item, + char *page) +{ + struct nvmet_port *port = to_nvmet_port(item); + + return snprintf(page, PAGE_SIZE, "%d\n", port->pi_enable); +} + +static ssize_t nvmet_param_pi_enable_store(struct config_item *item, + const char *page, size_t count) +{ + struct nvmet_port *port = to_nvmet_port(item); + bool val; + + if (strtobool(page, &val)) + return -EINVAL; + + if (port->enabled) { + pr_err("Disable port before setting pi_enable value.\n"); + return -EACCES; + } + + port->pi_enable = val; + return count; +} + +CONFIGFS_ATTR(nvmet_, param_pi_enable); +#endif + static ssize_t nvmet_addr_trtype_show(struct config_item *item, char *page) { @@ -1010,6 +1040,28 @@ static ssize_t nvmet_subsys_attr_model_store(struct config_item *item, } CONFIGFS_ATTR(nvmet_subsys_, attr_model); +#ifdef CONFIG_BLK_DEV_INTEGRITY +static ssize_t nvmet_subsys_attr_pi_enable_show(struct config_item *item, + char *page) +{ + return snprintf(page, PAGE_SIZE, "%d\n", to_subsys(item)->pi_support); +} + +static ssize_t nvmet_subsys_attr_pi_enable_store(struct config_item *item, + const char *page, size_t count) +{ + struct nvmet_subsys *subsys = to_subsys(item); + bool pi_enable; + + if (strtobool(page, &pi_enable)) + return -EINVAL; + + subsys->pi_support = pi_enable; + return count; +} +CONFIGFS_ATTR(nvmet_subsys_, attr_pi_enable); +#endif + static struct configfs_attribute *nvmet_subsys_attrs[] = { &nvmet_subsys_attr_attr_allow_any_host, &nvmet_subsys_attr_attr_version, @@ -1017,6 +1069,9 @@ static struct configfs_attribute *nvmet_subsys_attrs[] = { &nvmet_subsys_attr_attr_cntlid_min, &nvmet_subsys_attr_attr_cntlid_max, &nvmet_subsys_attr_attr_model, +#ifdef CONFIG_BLK_DEV_INTEGRITY + &nvmet_subsys_attr_attr_pi_enable, +#endif NULL, }; @@ -1316,6 +1371,9 @@ static struct configfs_attribute *nvmet_port_attrs[] = { &nvmet_attr_addr_trsvcid, &nvmet_attr_addr_trtype, &nvmet_attr_param_inline_data_size, +#ifdef CONFIG_BLK_DEV_INTEGRITY + &nvmet_attr_param_pi_enable, +#endif NULL, }; |