linux-kernel - Re: [PATCH 2/5] libbpf: add missing typedef

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Message-ID: <CAGnkfhzEZokRWMtTdbHzy1JZVVEzEPuY2oWL-9LzjRVgG0Y05Q@mail.gmail.com>
Date:   Mon, 20 May 2019 19:43:37 +0200
From:   Matteo Croce <mcroce@...hat.com>
To:     Stanislav Fomichev <sdf@...ichev.me>
Cc:     xdp-newbies@...r.kernel.org, bpf@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>
Subject: Re: [PATCH 2/5] libbpf: add missing typedef

On Mon, May 20, 2019 at 6:53 PM Stanislav Fomichev <sdf@...ichev.me> wrote:
>
> On 05/18, Matteo Croce wrote:
> > Sync tools/include/linux/types.h with the UAPI one to fix this build error:
> >
> > make -C samples/bpf/../../tools/lib/bpf/ RM='rm -rf' LDFLAGS= srctree=samples/bpf/../../ O=
> >   HOSTCC  samples/bpf/sock_example
> > In file included from samples/bpf/sock_example.c:27:
> > /usr/include/linux/ip.h:102:2: error: unknown type name ‘__sum16’
> >   102 |  __sum16 check;
> >       |  ^~~~~~~
> > make[2]: *** [scripts/Makefile.host:92: samples/bpf/sock_example] Error 1
> > make[1]: *** [Makefile:1763: samples/bpf/] Error 2
> >
> > Signed-off-by: Matteo Croce <mcroce@...hat.com>
> > ---
> >  tools/include/linux/types.h | 3 +++
> >  1 file changed, 3 insertions(+)
> >
> > diff --git a/tools/include/linux/types.h b/tools/include/linux/types.h
> > index 154eb4e3ca7c..5266dbfee945 100644
> > --- a/tools/include/linux/types.h
> > +++ b/tools/include/linux/types.h
> > @@ -58,6 +58,9 @@ typedef __u32 __bitwise __be32;
> >  typedef __u64 __bitwise __le64;
> >  typedef __u64 __bitwise __be64;
> >
> > +typedef __u16 __bitwise __sum16;
> > +typedef __u32 __bitwise __wsum;
> If you do that, you should probably remove 'typedef __u16 __sum16;'
> from test_progs.h:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/tree/tools/testing/selftests/bpf/test_progs.h#n13
>
> > +
> >  typedef struct {
> >       int counter;
> >  } atomic_t;
> > --
> > 2.21.0
> >

Hi,

I see test_progs.h only included in tools/testing/selftests/bpf/prog_tests/*,
so maybe it's unreladed to my change in samples/bpf/.
Maybe in a different patchset.

Bye,
-- 
Matteo Croce
per aspera ad upstream