netdev - Re: [Patch net-next v8 02/11] ipv6: make ip6_dst

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Message-ID: <20130522161013.GA10184@zed>
Date:	Wed, 22 May 2013 19:10:14 +0300
From:	Mike Rapoport <mike.rapoport@...ellosystems.com>
To:	Cong Wang <amwang@...hat.com>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [Patch net-next v8 02/11] ipv6: make ip6_dst_hoplimit() static
 inline

On Wed, May 22, 2013 at 12:03:23PM -0400, Cong Wang wrote:
> 
> 
> ----- Original Message -----
> > 
> > I think you can just drop #ifdefs in 90% of the cases rather than
> > create two versions of code for IPv4 and IPv6....
> > 
> 
> I know we can use memcmp(), but comparing 16+ bytes even for IPv4 is not
> a good idea, also we have to zalloc() every instance of union vxlan_addr.

I've lost you here... Why not just:

static inline
bool vxlan_addr_equal(const union vxlan_addr *a, const union vxlan_addr *b)
{
       if (a->sa.sa_family != b->sa.sa_family)
               return false;
       if (a->sa.sa_family == AF_INET6)
               return ipv6_addr_equal(&a->sin6.sin6_addr, &b->sin6.sin6_addr);
       else
               return a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr;
}

--
Sincrely yours,
Mike.
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