linux-kernel - Re: [PATCH RESEND net-next] ip_tunnel_core: Fix build for archs without _HAVE_ARCH_IPV6

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Date:   Wed, 05 Aug 2020 12:31:03 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     sbrivio@...hat.com
Cc:     sfr@...b.auug.org.au, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
        heiko.carstens@...ibm.com, xiyou.wangcong@...il.com
Subject: Re: [PATCH RESEND net-next] ip_tunnel_core: Fix build for archs
 without _HAVE_ARCH_IPV6_CSUM

From: Stefano Brivio <sbrivio@...hat.com>
Date: Wed, 5 Aug 2020 15:39:31 +0200

> On architectures defining _HAVE_ARCH_IPV6_CSUM, we get
> csum_ipv6_magic() defined by means of arch checksum.h headers. On
> other architectures, we actually need to include net/ip6_checksum.h
> to be able to use it.
> 
> Without this include, building with defconfig breaks at least for
> s390.
> 
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Fixes: 4cb47a8644cc ("tunnels: PMTU discovery support for directly bridged IP packets")
> Signed-off-by: Stefano Brivio <sbrivio@...hat.com>

Applied, thank you.