mptcp: reset subflow when MP_FAIL doesn't respond
This patch adds a new msk->flags bit MPTCP_FAIL_NO_RESPONSE, then reuses sk_timer to trigger a check if we have not received a response from the peer after sending MP_FAIL. If the peer doesn't respond properly, reset the subflow. Signed-off-by: Geliang Tang <geliang.tang@suse.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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