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netfilter: nf_tables_offload: Check for the NETDEV_UNREGISTER event

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

Fixes: 06d392cbe3 ("netfilter: nf_tables_offload: remove rules when the device unregisters")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
wenxu 2019-11-13 12:21:07 +08:00 committed by Pablo Neira Ayuso
parent d50264f1fe
commit d1f4c96647
1 changed files with 3 additions and 0 deletions
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3
net/netfilter/nf_tables_offload.c
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@ -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)