[PATCH 5.18 299/879] mptcp: reset the packet scheduler on PRIO change

Greg Kroah-Hartman
2022-06-07T22:31:59Z

From: Paolo Abeni <pabeni@redhat.com>

[ Upstream commit 0e203c324752e13d22624ab7ffafe934fa06ab50 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mptcp/pm_netlink.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index b5e8de6f7507..e3dcc5501579 100644
--- 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;
--
2.35.1