[patch net-next] net: devlink: expose the info about version representing a component

[Jiri Pirko <jiri@resnulli.us>]

From: Jiri Pirko <jiri@nvidia.com>

If certain version exposed by a driver is marked to be representing a
component, expose this info to the user.

Example:
$ devlink dev info
netdevsim/netdevsim10:
  driver netdevsim
  versions:
      running:
        fw.mgmt 10.20.30
      flash_components:
        fw.mgmt

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 include/uapi/linux/devlink.h | 2 ++
 net/core/devlink.c           | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h
index 2f24b53a87a5..7f2874189188 100644
--- a/include/uapi/linux/devlink.h
+++ b/include/uapi/linux/devlink.h
@@ -607,6 +607,8 @@ enum devlink_attr {
 
 	DEVLINK_ATTR_SELFTESTS,			/* nested */
 
+	DEVLINK_ATTR_INFO_VERSION_IS_COMPONENT,	/* u8 0 or 1 */
+
 	/* add new attributes above here, update the policy in devlink.c */
 
 	__DEVLINK_ATTR_MAX,
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 2dcf2bcc3527..31bca879f9cf 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -6621,6 +6621,11 @@ static int devlink_info_version_put(struct devlink_info_req *req, int attr,
 	if (err)
 		goto nla_put_failure;
 
+	err = nla_put_u8(req->msg, DEVLINK_ATTR_INFO_VERSION_IS_COMPONENT,
+			 version_type == DEVLINK_INFO_VERSION_TYPE_COMPONENT);
+	if (err)
+		goto nla_put_failure;
+
 	nla_nest_end(req->msg, nest);
 
 	return 0;
-- 
2.37.3