netdev - Re: linux-next: Tree for Nov 17 (uml, no IPV6)

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Date:   Tue, 16 Nov 2021 21:46:35 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Netdev <netdev@...r.kernel.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: linux-next: Tree for Nov 17 (uml, no IPV6)

On 11/16/21 6:58 PM, Stephen Rothwell wrote:
> Hi all,
> 
> Changes since 20211116:
> 

ARCH=um SUBARCH=x86_64:
# CONFIG_IPV6 is not set


In file included from ../net/ethernet/eth.c:62:0:
../include/net/gro.h: In function ‘ip6_gro_compute_pseudo’:
../include/net/gro.h:413:22: error: implicit declaration of function ‘csum_ipv6_magic’; did you mean ‘csum_tcpudp_magic’? [-Werror=implicit-function-declaration]
   return ~csum_unfold(csum_ipv6_magic(&iph->saddr, &iph->daddr,
                       ^~~~~~~~~~~~~~~
                       csum_tcpudp_magic


After I made ip6_gro_compute_pseudo() conditional on CONFIG_IPV6,
I got this build error:

In file included from ../net/ipv6/tcpv6_offload.c:10:0:
../net/ipv6/tcpv6_offload.c: In function ‘tcp6_gro_receive’:
../net/ipv6/tcpv6_offload.c:22:11: error: implicit declaration of function ‘ip6_gro_compute_pseudo’; did you mean ‘inet_gro_compute_pseudo’? [-Werror=implicit-function-declaration]
            ip6_gro_compute_pseudo)) {
            ^
../include/net/gro.h:235:5: note: in definition of macro ‘__skb_gro_checksum_validate’
      compute_pseudo(skb, proto));  \
      ^~~~~~~~~~~~~~
../net/ipv6/tcpv6_offload.c:21:6: note: in expansion of macro ‘skb_gro_checksum_validate’
       skb_gro_checksum_validate(skb, IPPROTO_TCP,
       ^~~~~~~~~~~~~~~~~~~~~~~~~



This is UML x86_64 defconfig:

$ make ARCH=um SUBARCH=x86_64 defconfig all


-- 
~Randy