[IPV4]: fib_validate_source() annotations

annotated arguments and inferred net-endian variables in callers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/ip_fib.h

@@ -222,8 +222,8 @@ extern int inet_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *ar
 extern int inet_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
 extern int inet_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
 extern int inet_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
-extern int fib_validate_source(u32 src, u32 dst, u8 tos, int oif,
-			       struct net_device *dev, u32 *spec_dst, u32 *itag);
+extern int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif,
+			       struct net_device *dev, __be32 *spec_dst, u32 *itag);
 extern void fib_select_multipath(const struct flowi *flp, struct fib_result *res);
 
 struct rtentry;

net/ipv4/fib_frontend.c

@@ -180,8 +180,8 @@ unsigned inet_addr_type(u32 addr)
    - check, that packet arrived from expected physical interface.
  */
 
-int fib_validate_source(u32 src, u32 dst, u8 tos, int oif,
-			struct net_device *dev, u32 *spec_dst, u32 *itag)
+int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif,
+			struct net_device *dev, __be32 *spec_dst, u32 *itag)
 {
 	struct in_device *in_dev;
 	struct flowi fl = { .nl_u = { .ip4_u =

net/ipv4/route.c

@@ -1722,7 +1722,8 @@ static inline int __mkroute_input(struct sk_buff *skb,
 	int err;
 	struct in_device *out_dev;
 	unsigned flags = 0;
-	u32 spec_dst, itag;
+	__be32 spec_dst;
+	u32 itag;
 
 	/* get a working reference to the output device */
 	out_dev = in_dev_get(FIB_RES_DEV(*res));