net: use dst_confirm_neigh for UDP, RAW, ICMP, L2TP

[mirror_ubuntu-zesty-kernel.git] / net / ipv4 / udp.c

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 8aab7d78d25bc6eaa42dcc960cdbd5086f614cad..8a75840c5d8408f59dba5d56561dd8430079c9bb 100644 (file)
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -814,7 +814,7 @@ static int udp_send_skb(struct sk_buff *skb, struct flowi4 *fl4)
        if (is_udplite)                                  /*     UDP-Lite      */
                csum = udplite_csum(skb);
 
-       else if (sk->sk_no_check_tx) {   /* UDP csum disabled */
+       else if (sk->sk_no_check_tx && !skb_is_gso(skb)) {   /* UDP csum off */
 
                skb->ip_summed = CHECKSUM_NONE;
                goto send;
@@ -1113,7 +1113,8 @@ out:
        return err;
 
 do_confirm:
-       dst_confirm(&rt->dst);
+       if (msg->msg_flags & MSG_PROBE)
+               dst_confirm_neigh(&rt->dst, &fl4->daddr);
        if (!(msg->msg_flags&MSG_PROBE) || len)
                goto back_from_confirm;
        err = 0;