mptcp: reset the packet scheduler on PRIO change

Similar to the previous patch, for priority changes
requested by the local PM.

Reported-and-suggested-by: Davide Caratti <dcaratti@redhat.com>
Fixes: 067065422fcd ("mptcp: add the outgoing MP_PRIO support")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index b5e8de6f75076ba53670fcb6f5ab9eddef5b3a79..e3dcc5501579f2d7e6b46e206d44cce2abab8444 100644 (file)
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -727,6 +727,8 @@ static int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk,
                if (!addresses_equal(&local, addr, addr->port))
                        continue;
 
+               if (subflow->backup != bkup)
+                       msk->last_snd = NULL;
                subflow->backup = bkup;
                subflow->send_mp_prio = 1;
                subflow->request_bkup = bkup;