ipv6: allow to cache dst for a connected sk in ip6_sk_dst_lookup_flow()

Add 'connected' parameter to ip6_sk_dst_lookup_flow() and update
the cache only if ip6_sk_dst_check() returns NULL and a socket
is connected.

The function is used as before, the new behavior for UDP sockets
in udpv6_sendmsg() will be enabled in the next patch.

Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 6861ed479469..fc13a1e2d789 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1308,7 +1308,7 @@ do_udp_sendmsg:
 
         fl6.flowlabel = ip6_make_flowinfo(ipc6.tclass, fl6.flowlabel);
 
-        dst = ip6_sk_dst_lookup_flow(sk, &fl6, final_p);
+        dst = ip6_sk_dst_lookup_flow(sk, &fl6, final_p, false);
         if (IS_ERR(dst)) {
                 err = PTR_ERR(dst);
                 dst = NULL;