Re: [PATCH] 1 Wire drivers illegally overload NETLINK_NFLOG

[Harald Welte <laforge@netfilter.org>]

On Fri, Jul 22, 2005 at 11:05:59PM -0400, YOSHIFUJI Hideaki / 吉藤英明 wrote:
> In article <20050723125427.GA11177@rama> (at Sat, 23 Jul 2005 08:54:27 -0400), Harald Welte <laforge@netfilter.org> says:
> 
> > --- a/include/linux/netlink.h
> > +++ b/include/linux/netlink.h
> > @@ -20,7 +20,7 @@
> >  #define NETLINK_IP6_FW		13
> >  #define NETLINK_DNRTMSG		14	/* DECnet routing messages */
> >  #define NETLINK_KOBJECT_UEVENT	15	/* Kernel messages to userspace */
> > -#define NETLINK_TAPBASE		16	/* 16 to 31 are ethertap */
> > +#define NETLINK_W1		16	/* 16 to 31 are ethertap */
> >  
> >  #define MAX_LINKS 32		
> >  
> 
> Comment says that 16-31 are used for ethertap.
> So, probably assigh NETLINK_W1 at 32, and bump MAX_LINKS?

MAX_LINKS > 32 would result in larger statically allocated pointer
arrays.  It would also only work if NPROTO is increased too, IIRC.

I strongly disrecommend increasing NPROTO.  Maybe we should look into
reusing NETLINK_FIREWALL (which was an old 2.2.x kernel interface).

But to be honest, I don't really care all that much as long as existing
and still very actively used values are not just overloaded.

-- 
- Harald Welte <laforge@netfilter.org>                 http://netfilter.org/
============================================================================
  "Fragmentation is like classful addressing -- an interesting early
   architectural error that shows how much experimentation was going
   on while IP was being designed."                    -- Paul Vixie

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