From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [NET 02/06]: Introduce RTA_TABLE/FRA_TABLE attributes
Date: Fri, 11 Aug 2006 00:33:56 -0700 (PDT)
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From: Michael Tokarev <mjt@tls.msk.ru>
Date: Fri, 11 Aug 2006 11:02:43 +0400

> Patrick McHardy wrote:
> > --- a/include/linux/rtnetlink.h
> > +++ b/include/linux/rtnetlink.h
> 
> > +static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
> > +{
> > +	return RTA_GET_U32(rta[RTA_TABLE-1]);
> > +rtattr_failure:
> > +	return table;
> > +}
> > +
> 
> What's that ?  ;)

The RTA_GET_U32 macro internally branches to rtattr_failure.