[PATCH mptcp-net] mptcp: pm: reset retrans_time when ADD_ADDR entry is reused

When an ADD_ADDR entry is reused, the timer is re-armed, because the
goal is to re-announce an ADD_ADDR, and eventually retransmit it if
needed.

In this case, the retransmission counter should be reset as well, so the
re-announced address gets its retransmissions back instead of relying on
what was left before, and possibly not being able to retransmit it.

Fixes: 304ab97f4c7c ("mptcp: allow ADD_ADDR reissuance by userspace PMs")
Link: https://netdev-ai.bots.linux.dev/sashiko/#/patchset/20260803-net-mptcp-misc-fixes-7-2-rc6-v2-0-b8f496d71664%40kernel.org?part=4
Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>
---
 net/mptcp/pm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 5e499ec1c50a..e46abbda7d27 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -462,10 +462,10 @@ bool mptcp_pm_announced_alloc(struct mptcp_sock *msk,
 
 	add_entry->addr = *addr;
 	add_entry->sock = msk;
-	add_entry->retrans_times = 0;
 
 	timer_setup(&add_entry->timer, mptcp_pm_add_addr_timer, 0);
 reset_timer:
+	add_entry->retrans_times = 0;
 	add_entry->timer_done = false;
 	timeout = mptcp_adjust_add_addr_timeout(msk);
 	if (timeout)

---
base-commit: 0715f5ba093a581def25b88da61c987b1719bc6d
change-id: 20260805-mptcp-pm-reset-retrans_time-8894830b0bd7

Best regards,
--  
Matthieu Baerts (NGI0) <[email protected]>