Commit 1774d3cf authored by Matthieu Baerts (NGI0)'s avatar Matthieu Baerts (NGI0) Committed by Jakub Kicinski
Browse files

mptcp: pm: kernel: reset fullmesh counter after flush 



This variable counts how many MPTCP endpoints have a 'fullmesh' flag
set. After having flushed all MPTCP endpoints, it is then needed to
reset this counter.

Without this reset, this counter exposed to the userspace is wrong, but
also non-fullmesh endpoints added after the flush will not be taken into
account to create subflows in reaction to ADD_ADDRs.

Fixes: f88191c7 ("mptcp: pm: in-kernel: record fullmesh endp nb")
Cc: stable@vger.kernel.org
Reported-by: default avatarSashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260422-mptcp-inc-limits-v6-0-903181771530%40kernel.org?part=15


Reviewed-by: default avatarMat Martineau <martineau@kernel.org>
Signed-off-by: default avatarMatthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260427-net-mptcp-misc-fixes-7-1-rc2-v1-4-7432b7f279fa@kernel.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent f14d6e9c

net/mptcp/pm_kernel.c

+1 −0
Original line number Diff line number Diff line
@@ -1278,6 +1278,7 @@ static void __reset_counters(struct pm_nl_pernet *pernet) 
	WRITE_ONCE(pernet->endp_signal_max, 0);

	WRITE_ONCE(pernet->endp_subflow_max, 0);

	WRITE_ONCE(pernet->endp_laminar_max, 0);

	WRITE_ONCE(pernet->endp_fullmesh_max, 0);

	pernet->endpoints = 0;

}