linux-kernel - [PATCH net-next 12/15] mptcp: pm: in-kernel: remove stale_loss

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Message-Id: <20250925-net-next-mptcp-c-flag-laminar-v1-12-ad126cc47c6b@kernel.org>
Date: Thu, 25 Sep 2025 12:32:47 +0200
From: "Matthieu Baerts (NGI0)" <matttbe@...nel.org>
To: Mat Martineau <martineau@...nel.org>, Geliang Tang <geliang@...nel.org>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Simon Horman <horms@...nel.org>, Shuah Khan <shuah@...nel.org>, 
 Martin KaFai Lau <martin.lau@...ux.dev>
Cc: netdev@...r.kernel.org, mptcp@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 "Matthieu Baerts (NGI0)" <matttbe@...nel.org>
Subject: [PATCH net-next 12/15] mptcp: pm: in-kernel: remove stale_loss_cnt

It is currently not used.

It was in fact never used since its introduction in commit ff5a0b421cb2
("mptcp: faster active backup recovery"). It was probably initially
added to struct pm_nl_pernet during the development of this commit,
before being added to struct mptcp_pernet in ctrl.c, but not removed
from the first place.

Reviewed-by: Mat Martineau <martineau@...nel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>
---
 net/mptcp/pm_kernel.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/net/mptcp/pm_kernel.c b/net/mptcp/pm_kernel.c
index d30b06605f623aaaf38152ab6750841c5deeb0b5..0e1e99e72950f2432b33610047bc4aa68c5e75af 100644
--- a/net/mptcp/pm_kernel.c
+++ b/net/mptcp/pm_kernel.c
@@ -19,7 +19,6 @@ struct pm_nl_pernet {
 	spinlock_t		lock;
 	struct list_head	endp_list;
 	unsigned int		endpoints;
-	unsigned int		stale_loss_cnt;
 	unsigned int		endp_signal_max;
 	unsigned int		endp_subflow_max;
 	unsigned int		limit_add_addr_accepted;
@@ -1469,7 +1468,6 @@ static int __net_init pm_nl_init_net(struct net *net)
 	/* Cit. 2 subflows ought to be enough for anybody. */
 	pernet->limit_extra_subflows = 2;
 	pernet->next_id = 1;
-	pernet->stale_loss_cnt = 4;
 	spin_lock_init(&pernet->lock);

 	/* No need to initialize other pernet fields, the struct is zeroed at

-- 
2.51.0