devlink: fix the enum behind DEVLINK_ATTR_RELOAD_LIMITS

DEVLINK_ATTR_RELOAD_LIMITS carries enum devlink_reload_limit, the spec
says enum devlink_reload_action. The two are unrelated, and have
a different set of values (bits 1, 2 vs bits 0, 1).

AFAICT this is a cosmetic change - both DEVLINK_RELOAD_LIMIT_UNSPEC
and the out of bounds bit 2 will be rejected either way because drivers
don't declare them as supported. User will see either a policy
validation failure or "Requested limit is not supported by the driver".

While at it annotate the right enum for reload-stats-limit

Link: https://patch.msgid.link/20260915161341.1053476-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Documentation/netlink/specs/devlink.yaml

@@ -174,6 +174,18 @@ definitions:
         value: 1
       -
         name: fw-activate
+  -
+    type: enum
+    name: reload-limit
+    entries:
+      -
+        name: unspec
+        doc: no constraints
+      -
+        name: no-reset
+        doc: >-
+          No reset allowed, no down time allowed, no link flap and no
+          configuration is lost.
   -
     type: enum
     name: param-cmode
@@ -775,7 +787,7 @@ attribute-sets:
       -
         name: reload-limits
         type: bitfield32
-        enum: reload-action
+        enum: reload-limit
         enum-as-flags: true
       -
         name: dev-stats
@@ -793,6 +805,7 @@ attribute-sets:
       -
         name: reload-stats-limit
         type: u8
+        enum: reload-limit
       -
         name: reload-stats-value
         type: u32

net/devlink/netlink_gen.c

@@ -334,7 +334,7 @@ static const struct nla_policy devlink_reload_nl_policy[DEVLINK_ATTR_INDEX + 1]
 	[DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING, },
 	[DEVLINK_ATTR_INDEX] = NLA_POLICY_FULL_RANGE(NLA_UINT, &devlink_attr_index_range),
 	[DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, 1, 2),
-	[DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(6),
+	[DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(3),
 	[DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32, },
 	[DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32, },
 	[DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32, },