netdev - [PATCH 16/16] net: Convert iptable_filter_net

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Date:   Mon, 19 Feb 2018 11:50:54 +0300
From:   Kirill Tkhai <ktkhai@...tuozzo.com>
To:     davem@...emloft.net, avagin@...tuozzo.com, pablo@...filter.org,
        kadlec@...ckhole.kfki.hu, fw@...len.de, yoshfuji@...ux-ipv6.org,
        afaerber@...e.de, steffen.klassert@...unet.com,
        herbert@...dor.apana.org.au, johannes@...solutions.net,
        netdev@...r.kernel.org, ktkhai@...tuozzo.com
Subject: [PATCH 16/16] net: Convert iptable_filter_net_ops

These pernet_operations register and unregister
net::ipv4.iptable_filter table. Since there are
no packets in-flight at the time of exit method
is working, iptables rules should not be touched.
Also, pernet_operations should not send ipv4
packets each other. So, it's safe to mark them
async.

Signed-off-by: Kirill Tkhai <ktkhai@...tuozzo.com>
---
 net/ipv4/netfilter/iptable_filter.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ipv4/netfilter/iptable_filter.c b/net/ipv4/netfilter/iptable_filter.c
index 9ac92ea7b93c..c1c136a93911 100644
--- a/net/ipv4/netfilter/iptable_filter.c
+++ b/net/ipv4/netfilter/iptable_filter.c
@@ -87,6 +87,7 @@ static void __net_exit iptable_filter_net_exit(struct net *net)
 static struct pernet_operations iptable_filter_net_ops = {
 	.init = iptable_filter_net_init,
 	.exit = iptable_filter_net_exit,
+	.async = true,
 };
 
 static int __init iptable_filter_init(void)