From: Thomas Graf <tg...@suug.ch>
Date: Wed, 22 Jul 2015 14:23:09 +0200
> On 07/22/15 at 12:10am, Roopa Prabhu wrote:
>> From: Roopa Prabhu <ro...@cumulusnetworks.com>
>>
>> seen with CONFIG_IPV6 disabled. Wrap the code
>> around IS_ENABLED(CONFIG_IPV6)
>>
>> Reported-by: kbuild test robot <fengguang...@intel.com>
>> Signed-off-by: Roopa Prabhu <ro...@cumulusnetworks.com>
>
> We need the same for CONFIG_INET=n in inet_fib_lookup_dev:
>
> /home/tgraf/dev/linux/net-next/include/net/route.h:122: undefined reference
> to `ip_route_output_flow'
>
> Is it worth returning EAFNOSUPPORT instead of ENODEV in these
> cases? Something like this:
>
>> }
>> +#else
>> +static struct net_device *inet6_fib_lookup_dev(struct net *net, void *addr)
>> +{
> + return ERR_PTR(-EAFNOSUPPORT);
>> +}
>> +#endif
>
> And then IS_ERR() in mpls_route_add()?
Also IS_ENABLED() _DOES NOT_ work, what if MPLS is 'y' and IPV6 is 'm'?
You can't reache the modular symbol from statically built code.
What a mess.
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