Re: [PATCH nf-next 0/2] netfilter: conntrack: label helpers conditional compilation updates

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Sep 18, 2024 at 11:56:24PM +0200, Pablo Neira Ayuso wrote:
> On Wed, Sep 18, 2024 at 08:01:21PM +0300, Andy Shevchenko wrote:
> > On Wed, Sep 18, 2024 at 04:29:14PM +0200, Pablo Neira Ayuso wrote:
> > > On Wed, Sep 18, 2024 at 04:55:15PM +0300, Andy Shevchenko wrote:
> > > > On Wed, Sep 18, 2024 at 01:52:14PM +0200, Pablo Neira Ayuso wrote:
> > > > > On Mon, Sep 16, 2024 at 04:14:40PM +0100, Simon Horman wrote:
> > > > > > Hi,
> > > > > > 
> > > > > > This short series updates conditional compilation of label helpers to:
> > > > > > 
> > > > > > 1) Compile them regardless of if CONFIG_NF_CONNTRACK_LABELS is enabled
> > > > > >    or not. It is safe to do so as the functions will always return 0 if
> > > > > >    CONFIG_NF_CONNTRACK_LABELS is not enabled.  And the compiler should
> > > > > >    optimise waway the code.  Which is the desired behaviour.
> > > > > > 
> > > > > > 2) Only compile ctnetlink_label_size if CONFIG_NF_CONNTRACK_EVENTS is
> > > > > >    enabled.  This addresses a warning about this function being unused
> > > > > >    in this case.
> > > > > 
> > > > > Patch 1)
> > > > > 
> > > > > -#ifdef CONFIG_NF_CONNTRACK_LABELS
> > > > >  static inline int ctnetlink_label_size(const struct nf_conn *ct)
> > > > > 
> > > > > Patch 2)
> > > > > 
> > > > > +#ifdef CONFIG_NF_CONNTRACK_EVENTS
> > > > >  static inline int ctnetlink_label_size(const struct nf_conn *ct)
> > > > > 
> > > > > They both refer to ctnetlink_label_size(), #ifdef check is not
> > > > > correct.
> > > > 
> > > > But the first one touches more, no?
> > > 
> > > Yes, it also remove a #define ctnetlink_label_size() macro in patch #1.
> > > I am fine with this series as is.
> > 
> > What I meant is that the original patch 1 takes care about definitions of
> > two functions. Not just a single one.
> 
> My understanding is that #ifdef CONFIG_NF_CONNTRACK_LABELS that wraps
> ctnetlink_label_size() is not correct (patch 1), instead
> CONFIG_NF_CONNTRACK_EVENTS should be used (patch 2).
> 
> Then, as a side effect this goes away (patch 1):
> 
> -#else
> -#define ctnetlink_dump_labels(a, b) (0)
> -#define ctnetlink_label_size(a)     (0)
> -#endif
> 
> that is why I am proposing to coaleasce these two patches in one.

Thanks,

Just to clarify. I did think there is value in separating the two changes.
But that was a subjective judgement on my part.

Your understanding of the overall change is correct.
And if it is preferred to have a single patch - as seems to be the case -
then that is fine by me.

Going forward, I'll try to remember not to split-up patches for netfilter
so much.

Kind regards,
Simon




[Index of Archives]     [Netfitler Users]     [Berkeley Packet Filter]     [LARTC]     [Bugtraq]     [Yosemite Forum]

  Powered by Linux