6.6-stable review patch. If anyone has any objections, please let me know.
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From: Matthieu Baerts (NGI0) matttbe@kernel.org
commit c07cc3ed895f9bfe0c53b5ed6be710c133b4271c upstream.
Taking the first one on the list doesn't work in some cases, e.g. if the initial subflow is being removed. Pick another one instead of not sending anything.
Fixes: 84dfe3677a6f ("mptcp: send out dedicated ADD_ADDR packet") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau martineau@kernel.org Signed-off-by: Matthieu Baerts (NGI0) matttbe@kernel.org Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/mptcp/pm_netlink.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
--- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -776,9 +776,12 @@ void mptcp_pm_nl_addr_send_ack(struct mp !mptcp_pm_should_rm_signal(msk)) return;
- subflow = list_first_entry_or_null(&msk->conn_list, typeof(*subflow), node); - if (subflow) - mptcp_pm_send_ack(msk, subflow, false, false); + mptcp_for_each_subflow(msk, subflow) { + if (__mptcp_subflow_active(subflow)) { + mptcp_pm_send_ack(msk, subflow, false, false); + break; + } + } }
int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk,