Commit 166b7834 authored by Matthieu Baerts (NGI0)'s avatar Matthieu Baerts (NGI0) Committed by Jakub Kicinski
Browse files

mptcp: pm: prio: skip closed subflows 



When sending an MP_PRIO, closed subflows need to be skipped.

This fixes the case where the initial subflow got closed, re-opened
later, then an MP_PRIO is needed for the same local address.

Note that explicit MP_PRIO cannot be sent during the 3WHS, so it is fine
to use __mptcp_subflow_active().

Fixes: 06706542 ("mptcp: add the outgoing MP_PRIO support")
Cc: stable@vger.kernel.org
Fixes: b29fcfb5 ("mptcp: full disconnect implementation")
Reviewed-by: default avatarMat Martineau <martineau@kernel.org>
Signed-off-by: default avatarMatthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260505-net-mptcp-pm-fixes-7-1-rc3-v1-9-fca8091060a4@kernel.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 62a9b19d

net/mptcp/pm.c

+3 −0
Original line number Diff line number Diff line
@@ -284,6 +284,9 @@ int mptcp_pm_mp_prio_send_ack(struct mptcp_sock *msk, 
		struct sock *ssk = mptcp_subflow_tcp_sock(subflow);

		struct mptcp_addr_info local, remote;



		if (!__mptcp_subflow_active(subflow))

			continue;



		mptcp_local_address((struct sock_common *)ssk, &local);

		if (!mptcp_addresses_equal(&local, addr, addr->port))

			continue;