udp: Update UDP "connection" timestamps in both directions

A UDP pseudo-connection between port A in the init namespace and port B in
the pasta guest namespace involves two sockets: udp_splice_init[v6][B]
and udp_splice_ns[v6][A].  The socket which originated this "connection"
will be permanent but the other one will be closed on a timeout.

When we get a packet from the originating socket, we update the timeout on
the other socket, but we don't do the same when we get a reply packet from
the other socket.  However any activity on the "connection" probably
indicates that it's still in use.  Without this we could incorrectly time
out a "connection" if it's using a protocol which involves a single
initiating packet, but which then gets continuing replies from the target.

Correct this by updating the timeout on both sockets for a packet in either
direction.  This also updates the timestamps for the permanent originating
sockets which is unnecessary, but harmless.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

0 files changed, 0 insertions, 0 deletions