net: Remove checks for dst_ops->redirect being NULL.

No longer necessary.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/dccp/ipv4.c

@@ -199,7 +199,7 @@ static void dccp_do_redirect(struct sk_buff *skb, struct sock *sk)
 {
 	struct dst_entry *dst = __sk_dst_check(sk, 0);
 
-	if (dst && dst->ops->redirect)
+	if (dst)
 		dst->ops->redirect(dst, skb);
 }
 

net/dccp/ipv6.c

@@ -133,7 +133,7 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 	if (type == NDISC_REDIRECT) {
 		struct dst_entry *dst = __sk_dst_check(sk, np->dst_cookie);
 
-		if (dst && dst->ops->redirect)
+		if (dst)
 			dst->ops->redirect(dst, skb);
 	}
 

net/ipv4/tcp_ipv4.c

@@ -325,7 +325,7 @@ static void do_redirect(struct sk_buff *skb, struct sock *sk)
 {
 	struct dst_entry *dst = __sk_dst_check(sk, 0);
 
-	if (dst && dst->ops->redirect)
+	if (dst)
 		dst->ops->redirect(dst, skb);
 }
 

net/ipv4/xfrm4_policy.c

@@ -207,8 +207,7 @@ static void xfrm4_redirect(struct dst_entry *dst, struct sk_buff *skb)
 	struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
 	struct dst_entry *path = xdst->route;
 
-	if (path->ops->redirect)
-		path->ops->redirect(path, skb);
+	path->ops->redirect(path, skb);
 }
 
 static void xfrm4_dst_destroy(struct dst_entry *dst)

net/ipv6/ip6_tunnel.c

@@ -611,10 +611,8 @@ ip4ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
 		skb_dst(skb2)->ops->update_pmtu(skb_dst(skb2), rel_info);
 	}
-	if (rel_type == ICMP_REDIRECT) {
-		if (skb_dst(skb2)->ops->redirect)
-			skb_dst(skb2)->ops->redirect(skb_dst(skb2), skb2);
-	}
+	if (rel_type == ICMP_REDIRECT)
+		skb_dst(skb2)->ops->redirect(skb_dst(skb2), skb2);
 
 	icmp_send(skb2, rel_type, rel_code, htonl(rel_info));
 

net/ipv6/tcp_ipv6.c

@@ -366,7 +366,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 	if (type == NDISC_REDIRECT) {
 		struct dst_entry *dst = __sk_dst_check(sk, np->dst_cookie);
 
-		if (dst && dst->ops->redirect)
+		if (dst)
 			dst->ops->redirect(dst,skb);
 	}
 

net/sctp/input.c

@@ -431,7 +431,7 @@ void sctp_icmp_redirect(struct sock *sk, struct sctp_transport *t,
 	if (!t)
 		return;
 	dst = sctp_transport_dst_check(t);
-	if (dst && dst->ops->redirect)
+	if (dst)
 		dst->ops->redirect(dst, skb);
 }