Re: [RFC PATCH 1/1 libnetfilter_conntrack] zero value handling of mark and zone

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Ken-ichirou MATSUZAWA <chamaken@xxxxxxxxx> wrote:
> I see, thanks.
> 
> > when we hit the NFCT_CMP_STRICT conditional, i.e.
> 
> # I may not understand what you told me...

Understandable, I meant CMP_MASK.  But I think we can
get away with an even simpler change.

What about this:

static int cmp_zone(const struct nf_conntrack *ct1,
	const struct nf_conntrack *ct2, unsigned int flags)
{
 return nfct_get_attr_u16(ct1, ATTR_ZONE) == nfct_get_attr_u16(ct2, ATTR_ZONE);
}

Then it should be sufficient to not call __cmp at all, i.e.:

- if (!__cmp(ATTR_ZONE, ct1, ct2, flags, cmp_zone))
+ if (!cmp_zone(ct1, ct2, flags))

ct1 and ct2 zones would then always be equal except if
both have ATTR_ZONE set and the zones are different.

What do you think?
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