summaryrefslogtreecommitdiffstats
path: root/include/linux/genl_magic_struct.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/genl_magic_struct.h')
-rw-r--r--include/linux/genl_magic_struct.h18
1 files changed, 13 insertions, 5 deletions
diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h
index 745ebfd6c7e..9a605b9ee83 100644
--- a/include/linux/genl_magic_struct.h
+++ b/include/linux/genl_magic_struct.h
@@ -59,12 +59,20 @@ enum {
GENLA_F_MANDATORY = 1 << 14,
GENLA_F_REQUIRED = 1 << 15,
- /* This will not be present in the __u16 .nla_type, but can be
- * triggered on in <struct>_to_skb, to exclude "sensitive"
- * information from broadcasts, or on unpriviledged get requests.
- * This is useful because genetlink multicast groups can be listened in
- * on by anyone. */
+ /* Below will not be present in the __u16 .nla_type, but can be
+ * triggered on in <struct>_to_skb resp. <struct>_from_attrs */
+
+ /* To exclude "sensitive" information from broadcasts, or on
+ * unpriviledged get requests. This is useful because genetlink
+ * multicast groups can be listened in on by anyone. */
GENLA_F_SENSITIVE = 1 << 16,
+
+ /* INVARIAN options cannot be changed at runtime.
+ * Useful to share an attribute policy and struct definition,
+ * between some "create" and "change" commands,
+ * but disallow certain fields to be changed online.
+ */
+ GENLA_F_INVARIANT = 1 << 17,
};
#define __nla_type(x) ((__u16)((__u16)(x) & (__u16)NLA_TYPE_MASK))