netdev - [PATCH net-next 12/12] net: Convert proto_gre_net

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Date:   Mon, 05 Mar 2018 14:32:23 +0300
From:   Kirill Tkhai <ktkhai@...tuozzo.com>
To:     pablo@...filter.org, kadlec@...ckhole.kfki.hu, fw@...len.de,
        stephen@...workplumber.org, davem@...emloft.net,
        dmitry.tarnyagin@...kless.no, socketcan@...tkopp.net,
        mkl@...gutronix.de, gerrit@....abdn.ac.uk, yoshfuji@...ux-ipv6.org,
        johannes.berg@...el.com, garsilva@...eddedor.com,
        ross.lagerwall@...rix.com, aconole@...heb.org,
        netdev@...r.kernel.org, ktkhai@...tuozzo.com
Subject: [PATCH net-next 12/12] net: Convert proto_gre_net_ops

These pernet_operations register and unregister sysctl.
nf_conntrack_l4proto_gre4->init_net is simple memory
initializer. Also, exit method removes gre keymap_list,
which is per-net. This looks safe to be executed
in parallel with other pernet_operations.

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

diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index d049ea5a3770..9bcd72fe91f9 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -406,6 +406,7 @@ static struct pernet_operations proto_gre_net_ops = {
 	.exit = proto_gre_net_exit,
 	.id   = &proto_gre_net_id,
 	.size = sizeof(struct netns_proto_gre),
+	.async = true,
 };
 
 static int __init nf_ct_proto_gre_init(void)