ipv4: Add redirect support to all protocol icmp error handlers.

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

1 files changed, 11 insertions, 0 deletions

diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 3eb76b5f221a..8f41a3190858 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -195,6 +195,14 @@ static inline void dccp_do_pmtu_discovery(struct sock *sk,
         } /* else let the usual retransmit timer handle it */
 }
 
+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)
+                dst->ops->redirect(dst, skb);
+}
+
 /*
  * This routine is called by the ICMP module when it gets some sort of error
  * condition. If err < 0 then the socket should be closed and the error
@@ -259,6 +267,9 @@ static void dccp_v4_err(struct sk_buff *skb, u32 info)
         }
 
         switch (type) {
+        case ICMP_REDIRECT:
+                dccp_do_redirect(skb, sk);
+                goto out;
         case ICMP_SOURCE_QUENCH:
                 /* Just silently ignore these. */
                 goto out;