Stefano Brivio 8ed54f167a ip_tunnel_core: Fix build for archs without _HAVE_ARCH_IPV6_CSUM
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@canb.auug.org.au>
Fixes: 4cb47a8644cc ("tunnels: PMTU discovery support for directly bridged IP packets")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-05 12:30:36 -07:00
..
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