5.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthieu Baerts (NGI0) matttbe@kernel.org
commit 68fc0f4b0d25692940cdc85c68e366cae63e1757 upstream.
A flush of the MPTCP endpoints should not affect the MPTCP limits. In other words, 'ip mptcp endpoint flush' should not change 'ip mptcp limits'.
But it was the case: the MPTCP_PM_ATTR_RCV_ADD_ADDRS (add_addr_accepted) limit was reset by accident. Removing the reset of this counter during a flush fixes this issue.
Fixes: 01cacb00b35c ("mptcp: add netlink-based PM") Cc: stable@vger.kernel.org Reported-by: Thomas Dreibholz dreibh@simula.no Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/579 Reviewed-by: Mat Martineau martineau@kernel.org Signed-off-by: Matthieu Baerts (NGI0) matttbe@kernel.org Link: https://patch.msgid.link/20250815-net-mptcp-misc-fixes-6-17-rc2-v1-2-521fe99... Signed-off-by: Jakub Kicinski kuba@kernel.org [adjusted patch by removing WRITE_ONCE to take into account the missing commit 72603d207d59 ("mptcp: use WRITE_ONCE for the pernet *_max")] Signed-off-by: Maximilian Heyne mheyne@amazon.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/mptcp/pm_netlink.c | 1 - 1 file changed, 1 deletion(-)
--- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -869,7 +869,6 @@ static void __flush_addrs(struct pm_nl_p static void __reset_counters(struct pm_nl_pernet *pernet) { pernet->add_addr_signal_max = 0; - pernet->add_addr_accept_max = 0; pernet->local_addr_max = 0; pernet->addrs = 0; }