[PATCH net 08/11] mptcp: pm: ADD_ADDR rtx: return early if no retrans
From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
Date: 2026-05-05 15:01:46
Also in:
lkml, mptcp, stable
Subsystem:
networking [general], networking [mptcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Matthieu Baerts, Mat Martineau, Linus Torvalds
No need to iterate over all subflows if there is no retransmission
needed.
Exit early in this case then.
Fixes: 30549eebc4d8 ("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>
---
net/mptcp/pm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 8a5dba7fe66e..4a6e5ab30d80 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c@@ -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);
--
2.53.0