[NET] rules: Share common attribute validation policy

Move the attribute policy for the non-specific attributes into
net/fib_rules.h and include it in the respective protocols.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h
index 68542b5..e4ba781 100644
--- a/include/net/fib_rules.h
+++ b/include/net/fib_rules.h
@@ -59,6 +59,13 @@
 	struct module		*owner;
 };
 
+#define FRA_GENERIC_POLICY \
+	[FRA_IFNAME]	= { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
+	[FRA_PRIORITY]	= { .type = NLA_U32 }, \
+	[FRA_FWMARK]	= { .type = NLA_U32 }, \
+	[FRA_FWMASK]	= { .type = NLA_U32 }, \
+	[FRA_TABLE]     = { .type = NLA_U32 }
+
 static inline void fib_rule_get(struct fib_rule *rule)
 {
 	atomic_inc(&rule->refcnt);