netdev - Re: [PATCH net-next] vrf: handle CONFIG_IPV6 not set for vrf_add_mac_header_if

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Date:   Tue, 8 Dec 2020 12:51:55 -0700
From:   David Ahern <dsahern@...il.com>
To:     Andrea Mayer <andrea.mayer@...roma2.it>,
        "David S. Miller" <davem@...emloft.net>,
        David Ahern <dsahern@...nel.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Shrijeet Mukherjee <shrijeet@...il.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Stefano Salsano <stefano.salsano@...roma2.it>,
        Paolo Lungaroni <paolo.lungaroni@...t.it>,
        Ahmed Abdelsalam <ahabdels.dev@...il.com>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH net-next] vrf: handle CONFIG_IPV6 not set for
 vrf_add_mac_header_if_unset()

On 12/8/20 10:52 AM, Andrea Mayer wrote:
> The vrf_add_mac_header_if_unset() is defined within a conditional
> compilation block which depends on the CONFIG_IPV6 macro.
> However, the vrf_add_mac_header_if_unset() needs to be called also by IPv4
> related code and when the CONFIG_IPV6 is not set, this function is missing.
> As a consequence, the build process stops reporting the error:
> 
>  ERROR: implicit declaration of function 'vrf_add_mac_header_if_unset'
> 
> The problem is solved by *only* moving functions
> vrf_add_mac_header_if_unset() and vrf_prepare_mac_header() out of the
> conditional block.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Fixes: 0489390882202 ("vrf: add mac header for tunneled packets when sniffer is attached")
> Signed-off-by: Andrea Mayer <andrea.mayer@...roma2.it>
> ---
>  drivers/net/vrf.c | 110 +++++++++++++++++++++++-----------------------
>  1 file changed, 55 insertions(+), 55 deletions(-)
> 


I should have caught that in my review.

Reviewed-by: David Ahern <dsahern@...nel.org>