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mptcp: pm: ADD_ADDR rtx: return early if no retrans 

No need to iterate over all subflows if there is no retransmission
needed.

Exit early in this case then.

Fixes: 30549eebc4 ("mptcp: make ADD_ADDR retransmission timeout adaptive")
Cc: stable@vger.kernel.org
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260505-net-mptcp-pm-fixes-7-1-rc3-v1-8-fca8091060a4@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
master
Matthieu Baerts (NGI0) 2026-05-05 17:00:56 +02:00 committed by Jakub Kicinski
parent c6d395e2de
commit 62a9b19dce
1 changed files with 3 additions and 0 deletions
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3
net/mptcp/pm.c
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@ -308,6 +308,9 @@ static unsigned int mptcp_adjust_add_addr_timeout(struct mptcp_sock *msk)
struct mptcp_subflow_context *subflow;
unsigned int max = 0, max_stale = 0;
if (!rto)
return 0;
mptcp_for_each_subflow(msk, subflow) {
struct sock *ssk = mptcp_subflow_tcp_sock(subflow);
struct inet_connection_sock *icsk = inet_csk(ssk);