From: Borislav Petkov <bp@alien8.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: netdev@vger.kernel.org
Subject: [PATCH v0 22/42] net: fib_notifier: Check notifier registration return value
Date: Mon, 8 Nov 2021 11:11:37 +0100 [thread overview]
Message-ID: <20211108101157.15189-23-bp@alien8.de> (raw)
In-Reply-To: <20211108101157.15189-1-bp@alien8.de>
From: Borislav Petkov <bp@suse.de>
Avoid homegrown notifier registration checks.
No functional changes.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: netdev@vger.kernel.org
---
net/core/fib_notifier.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/core/fib_notifier.c b/net/core/fib_notifier.c
index fc96259807b6..fa07d6a81ba0 100644
--- a/net/core/fib_notifier.c
+++ b/net/core/fib_notifier.c
@@ -86,7 +86,9 @@ static bool fib_dump_is_consistent(struct net *net, struct notifier_block *nb,
{
struct fib_notifier_net *fn_net = net_generic(net, fib_notifier_net_id);
- atomic_notifier_chain_register(&fn_net->fib_chain, nb);
+ if (atomic_notifier_chain_register(&fn_net->fib_chain, nb))
+ pr_warn("FIB notifier already registered\n");
+
if (fib_seq == fib_seq_sum(net))
return true;
atomic_notifier_chain_unregister(&fn_net->fib_chain, nb);
--
2.29.2
next parent reply other threads:[~2021-11-08 10:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20211108101157.15189-1-bp@alien8.de>
2021-11-08 10:11 ` Borislav Petkov [this message]
2021-11-08 10:11 ` [PATCH v0 42/42] notifier: Return an error when callback is already registered Borislav Petkov
2021-11-08 14:07 ` Geert Uytterhoeven
2021-11-08 14:21 ` Borislav Petkov
2021-11-08 15:25 ` Geert Uytterhoeven
2021-11-08 15:58 ` Borislav Petkov
2021-11-08 16:12 ` Geert Uytterhoeven
2021-11-08 16:21 ` Borislav Petkov
2021-11-08 20:59 ` Alan Stern
2021-11-08 21:18 ` Borislav Petkov
2021-11-08 10:19 ` [PATCH v0 00/42] notifiers: " Borislav Petkov
2021-11-08 14:17 ` Alan Stern
2021-11-08 14:24 ` Borislav Petkov
2021-11-08 14:35 ` Borislav Petkov
2021-11-08 16:23 ` Steven Rostedt
2021-11-08 16:29 ` Borislav Petkov
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