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netfilter: conntrack: nf_conncount_init is failing with IPv6 disabled 

The openvswitch module fails initialization when used in a kernel
without IPv6 enabled. nf_conncount_init() fails because the ct code
unconditionally tries to initialize the netns IPv6 related bit,
regardless of the build option. The change below ignores the IPv6
part if not enabled.

Note that the corresponding _put() function already has this IPv6
configuration check.

Fixes: 11efd5cb04 ("openvswitch: Support conntrack zone limit")
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Eelco Chaudron 2020-09-01 16:56:02 +02:00 committed by Pablo Neira Ayuso
parent 6c0d95d123
commit 526e81b990
1 changed files with 2 additions and 0 deletions
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2
net/netfilter/nf_conntrack_proto.c
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@ -565,6 +565,7 @@ static int nf_ct_netns_inet_get(struct net *net)
int err;
err = nf_ct_netns_do_get(net, NFPROTO_IPV4);
#if IS_ENABLED(CONFIG_IPV6)
if (err < 0)
goto err1;
err = nf_ct_netns_do_get(net, NFPROTO_IPV6);
@ -575,6 +576,7 @@ static int nf_ct_netns_inet_get(struct net *net)
err2:
nf_ct_netns_put(net, NFPROTO_IPV4);
err1:
#endif
return err;
}