ipv4: Make ip_call_ra_chain() return bool.

Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/ip.h

@@ -388,7 +388,7 @@ static inline int sk_mc_loop(struct sock *sk)
 	return 1;
 }
 
-extern int	ip_call_ra_chain(struct sk_buff *skb);
+extern bool ip_call_ra_chain(struct sk_buff *skb);
 
 /*
  *	Functions provided by ip_fragment.c

net/ipv4/ip_input.c

@@ -148,7 +148,7 @@
 /*
  *	Process Router Attention IP option (RFC 2113)
  */
-int ip_call_ra_chain(struct sk_buff *skb)
+bool ip_call_ra_chain(struct sk_buff *skb)
 {
 	struct ip_ra_chain *ra;
 	u8 protocol = ip_hdr(skb)->protocol;
@@ -167,7 +167,7 @@ int ip_call_ra_chain(struct sk_buff *skb)
 		    net_eq(sock_net(sk), dev_net(dev))) {
 			if (ip_is_fragment(ip_hdr(skb))) {
 				if (ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN))
-					return 1;
+					return true;
 			}
 			if (last) {
 				struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
@@ -180,9 +180,9 @@ int ip_call_ra_chain(struct sk_buff *skb)
 
 	if (last) {
 		raw_rcv(last, skb);
-		return 1;
+		return true;
 	}
-	return 0;
+	return false;
 }
 
 static int ip_local_deliver_finish(struct sk_buff *skb)