On Mon, Nov 15, 2010 at 7:13 PM, Patrick McHardy <kaber@xxxxxxxxx> wrote:
> On 15.11.2010 10:25, Changli Gao wrote:
>> #ifdef CONFIG_NF_CONNTRACK_EVENTS
>> diff --git a/include/net/netfilter/nf_conntrack_extend.h b/include/net/netfilter/nf_conntrack_extend.h
>> index 0772d29..1a9f96d 100644
>> --- a/include/net/netfilter/nf_conntrack_extend.h
>> +++ b/include/net/netfilter/nf_conntrack_extend.h
>> @@ -7,10 +7,16 @@
>>
>> enum nf_ct_ext_id {
>> NF_CT_EXT_HELPER,
>> +#if defined(CONFIG_NF_NAT) || defined(CONFIG_NF_NAT_MODULE)
>> NF_CT_EXT_NAT,
>> +#endif
>> NF_CT_EXT_ACCT,
>> +#ifdef CONFIG_NF_CONNTRACK_EVENTS
>> NF_CT_EXT_ECACHE,
>> +#endif
>> +#ifdef CONFIG_NF_CONNTRACK_ZONES
>> NF_CT_EXT_ZONE,
>> +#endif
>> NF_CT_EXT_NUM,
>
> What is the purpose of #ifdef'ing the extension IDs?
>
struct nf_ct_ext {
struct rcu_head rcu;
u8 offset[NF_CT_EXT_NUM];
u8 len;
char data[0];
};
Less IDs make nf_ct_ext smaller.
--
Regards,
Changli Gao(xiaosuo@xxxxxxxxx)
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