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

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Message-ID: <CAF1J0HNZS_s9pA1jetaFHZgqdgT+BfS6wASDpTL5UV8SzpH6Fg@mail.gmail.com>
Date:	Wed, 22 May 2013 18:50:22 +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 1:28 PM, Cong Wang <amwang@...hat.com> wrote:
> On Wed, 2013-05-22 at 00:14 -0700, David Miller wrote:
>> From: Cong Wang <amwang@...hat.com>
>> Date: Wed, 22 May 2013 12:54:13 +0800
>>
>
> Alright, I will change all such functions in vxlan.c back to what you
> are suggesting.
>
> For example, change
>
> static inline
> bool vxlan_addr_equal(const union vxlan_addr *a, const union vxlan_addr
> *b)
> {
> #if IS_ENABLED(CONFIG_IPV6)
>        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
> #endif
>                return a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr;
> }
>
> to
>
> #if IS_ENABLED(CONFIG_IPV6)
> 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;
> }
> #else
> static inline
> bool vxlan_addr_equal(const union vxlan_addr *a, const union vxlan_addr
> *b)
> {
>         return a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr;
> }
> #endif

I think you can just drop #ifdefs in 90% of the cases rather than
create two versions of code for IPv4 and IPv6....

> just in case I misunderstand you.
>
> Thanks.
>
> --
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--
Sincerely yours,
Mike.
--
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