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nvmet: Add vendor_id and subsys_vendor_id subsystem attributes

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Define the new vendor_id and subsys_vendor_id configfs attribute for
target subsystems. These attributes are respectively reported as the
vid field and as the ssvid field of the identify controller data of
a target controllers using the subsystem for which these attributes
are set.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Rick Wertenbroek <rick.wertenbroek@gmail.com>
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Damien Le Moal
2025-01-04 13:59:35 +09:00
committed by Keith Busch
parent 30e77e0fbe
commit 5d4f4ea8fa
3 changed files with 49 additions and 3 deletions
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45
drivers/nvme/target/configfs.c
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@@ -1412,6 +1412,49 @@ out_unlock:
}
CONFIGFS_ATTR(nvmet_subsys_, attr_cntlid_max);
static ssize_t nvmet_subsys_attr_vendor_id_show(struct config_item *item,
char *page)
{
return snprintf(page, PAGE_SIZE, "0x%x\n", to_subsys(item)->vendor_id);
}
static ssize_t nvmet_subsys_attr_vendor_id_store(struct config_item *item,
const char *page, size_t count)
{
u16 vid;
if (kstrtou16(page, 0, &vid))
return -EINVAL;
down_write(&nvmet_config_sem);
to_subsys(item)->vendor_id = vid;
up_write(&nvmet_config_sem);
return count;
}
CONFIGFS_ATTR(nvmet_subsys_, attr_vendor_id);
static ssize_t nvmet_subsys_attr_subsys_vendor_id_show(struct config_item *item,
char *page)
{
return snprintf(page, PAGE_SIZE, "0x%x\n",
to_subsys(item)->subsys_vendor_id);
}
static ssize_t nvmet_subsys_attr_subsys_vendor_id_store(struct config_item *item,
const char *page, size_t count)
{
u16 ssvid;
if (kstrtou16(page, 0, &ssvid))
return -EINVAL;
down_write(&nvmet_config_sem);
to_subsys(item)->subsys_vendor_id = ssvid;
up_write(&nvmet_config_sem);
return count;
}
CONFIGFS_ATTR(nvmet_subsys_, attr_subsys_vendor_id);
static ssize_t nvmet_subsys_attr_model_show(struct config_item *item,
char *page)
{
@@ -1640,6 +1683,8 @@ static struct configfs_attribute *nvmet_subsys_attrs[] = {
&nvmet_subsys_attr_attr_serial,
&nvmet_subsys_attr_attr_cntlid_min,
&nvmet_subsys_attr_attr_cntlid_max,
&nvmet_subsys_attr_attr_vendor_id,
&nvmet_subsys_attr_attr_subsys_vendor_id,
&nvmet_subsys_attr_attr_model,
&nvmet_subsys_attr_attr_qid_max,
&nvmet_subsys_attr_attr_ieee_oui,