[GENL]: Provide more information to userspace about registered genl families
Additionaly exports the following information when providing
the list of registered generic netlink families:
- protocol version
- header size
- maximum number of attributes
- list of available operations including
- id
- flags
- avaiability of policy and doit/dumpit function
libnl HEAD provides a utility to read this new information:
0x0010 nlctrl version 1
hdrsize 0 maxattr 6
op GETFAMILY (0x03) [POLICY,DOIT,DUMPIT]
0x0011 NLBL_MGMT version 1
hdrsize 0 maxattr 0
op unknown (0x02) [DOIT]
op unknown (0x03) [DOIT]
....
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/genetlink.h b/include/linux/genetlink.h
index 84f12a4..9049dc6 100644
--- a/include/linux/genetlink.h
+++ b/include/linux/genetlink.h
@@ -16,6 +16,8 @@
#define GENL_HDRLEN NLMSG_ALIGN(sizeof(struct genlmsghdr))
+#define GENL_ADMIN_PERM 0x01
+
/*
* List of reserved static generic netlink identifiers:
*/
@@ -43,9 +45,25 @@
CTRL_ATTR_UNSPEC,
CTRL_ATTR_FAMILY_ID,
CTRL_ATTR_FAMILY_NAME,
+ CTRL_ATTR_VERSION,
+ CTRL_ATTR_HDRSIZE,
+ CTRL_ATTR_MAXATTR,
+ CTRL_ATTR_OPS,
__CTRL_ATTR_MAX,
};
#define CTRL_ATTR_MAX (__CTRL_ATTR_MAX - 1)
+enum {
+ CTRL_ATTR_OP_UNSPEC,
+ CTRL_ATTR_OP_ID,
+ CTRL_ATTR_OP_FLAGS,
+ CTRL_ATTR_OP_POLICY,
+ CTRL_ATTR_OP_DOIT,
+ CTRL_ATTR_OP_DUMPIT,
+ __CTRL_ATTR_OP_MAX,
+};
+
+#define CTRL_ATTR_OP_MAX (__CTRL_ATTR_OP_MAX - 1)
+
#endif /* __LINUX_GENERIC_NETLINK_H */