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netfilter: don't allocate space for decnet hooks unless needed

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no need to define hook points if the family isn't supported.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal
2017-12-07 16:28:25 +01:00
committed by Pablo Neira Ayuso
parent ef57170bbf
commit bb4badf3a3
3 changed files with 8 additions and 0 deletions
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include/linux/netfilter.h
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@@ -219,9 +219,11 @@ static inline int nf_hook(u_int8_t pf, unsigned int hook, struct net *net,
case NFPROTO_BRIDGE:
hook_head = rcu_dereference(net->nf.hooks_bridge[hook]);
break;
#if IS_ENABLED(CONFIG_DECNET)
case NFPROTO_DECNET:
hook_head = rcu_dereference(net->nf.hooks_decnet[hook]);
break;
#endif
default:
WARN_ON_ONCE(1);
break;