Subject: Re: linux-next: build failure after merge of the net-next tree

From: Jason Wang <[email-masked]>
Date: Wed, 10 Jan 2018 13:53:37 +0800

On 2018年01月10日 12:06, Stephen Rothwell wrote:
> Hi all,
>
> After merging the net-next tree, today's linux-next build (sparc64
> defconfig) failed like this:
>
> net/socket.o: In function `tun_xdp_to_ptr':
> (.text+0x3180): multiple definition of `tun_xdp_to_ptr'
> fs/compat_ioctl.o:compat_ioctl.c:(.text+0x0): first defined here
> net/socket.o: In function `tun_ptr_to_xdp':
> (.text+0x31a0): multiple definition of `tun_ptr_to_xdp'
> fs/compat_ioctl.o:compat_ioctl.c:(.text+0x20): first defined here
>
> Caused by commit
>
>    fc72d1d54dd9 ("tuntap: XDP transmission")
>
> I applied the following fix for today:
>
> From: Stephen Rothwell <[email-masked]>
> Date: Wed, 10 Jan 2018 15:01:41 +1100
> Subject: [PATCH] tuntap: fix for "tuntap: XDP transmission"
>
> Signed-off-by: Stephen Rothwell <[email-masked]>
> ---
>   include/linux/if_tun.h | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h
> index 08e66827ad8e..c5b0a75a7812 100644
> --- a/include/linux/if_tun.h
> +++ b/include/linux/if_tun.h
> @@ -42,11 +42,11 @@ static inline bool tun_is_xdp_buff(void *ptr)
>   {
>   	return false;
>   }
> -void *tun_xdp_to_ptr(void *ptr)
> +static inline void *tun_xdp_to_ptr(void *ptr)
>   {
>   	return NULL;
>   }
> -void *tun_ptr_to_xdp(void *ptr)
> +static inline void *tun_ptr_to_xdp(void *ptr)
>   {
>   	return NULL;
>   }

Acked-by: Jason Wang <[email-masked]>

David, we need this for net-next, need I repost it?

Thanks