netdev - [PATCH 07/17] netfilter: nf_tables_offload: Check for the NETDEV

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Message-Id: <20191209192638.71184-8-pablo@netfilter.org>
Date:   Mon,  9 Dec 2019 20:26:28 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     netfilter-devel@...r.kernel.org
Cc:     davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 07/17] netfilter: nf_tables_offload: Check for the NETDEV_UNREGISTER event

From: wenxu <wenxu@...oud.cn>

Check for the NETDEV_UNREGISTER event from the nft_offload_netdev_event
function, which is the event that actually triggers the clean up.

Fixes: 06d392cbe3db ("netfilter: nf_tables_offload: remove rules when the device unregisters")
Signed-off-by: wenxu <wenxu@...oud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
 net/netfilter/nf_tables_offload.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/netfilter/nf_tables_offload.c b/net/netfilter/nf_tables_offload.c
index 68f17a6921d8..d7a35da008ef 100644
--- a/net/netfilter/nf_tables_offload.c
+++ b/net/netfilter/nf_tables_offload.c
@@ -577,6 +577,9 @@ static int nft_offload_netdev_event(struct notifier_block *this,
 	struct net *net = dev_net(dev);
 	struct nft_chain *chain;
 
+	if (event != NETDEV_UNREGISTER)
+		return NOTIFY_DONE;
+
 	mutex_lock(&net->nft.commit_mutex);
 	chain = __nft_offload_get_chain(dev);
 	if (chain)
-- 
2.11.0