Re: [PATCH 4/4] netfilter: xtables: merge registration structure to NFPROTO_UNSPEC

[Patrick McHardy <kaber@trash.net>]

Jan Engelhardt wrote:
> On Wednesday 2010-03-31 10:41, Patrick McHardy wrote:
>>>>> +static struct xt_match state_mt_reg __read_mostly = {
>>>>> +	.name       = "state",
>>>>> +	.family     = NFPROTO_UNSPEC,
>>>>> +	.checkentry = state_mt_check,
>>>>> +	.match      = state_mt,
>>>>> +	.destroy    = state_mt_destroy,
>>>>> +	.matchsize  = sizeof(struct xt_state_info),
>>>>> +	.me         = THIS_MODULE,
>>>>>  };
>>>> The patch looks fine, however I'd prefer if in the future you'd add
>>>> a changelog entry for these conversions stating why this will work
>>>> properly in all cases even with arptables and ebtables using the
>>>> xtables infrastructure.
>>> This will work because x_tables scans for NFPROTO_UNSPEC,
>>> and arp/ebtables just using x_tables :-)
>> I'm not sure I'm parsing this correctly. Both will find the match,
>> however the nf_ct_l3proto_try_module_get() call will fail
> 
> It won't fail - it is using par->family, not par->match->family.

That's broken then.