netdev - Re: [PATCH ethtool 1/3] misc: Fix build with kernel headers

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Date:   Fri, 13 Jan 2023 16:11:23 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Michal Kubecek <mkubecek@...e.cz>
Cc:     netdev@...r.kernel.org, Markus Mayer <mmayer@...adcom.com>,
        Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH ethtool 1/3] misc: Fix build with kernel headers < v4.11



On 1/13/2023 3:57 PM, Michal Kubecek wrote:
> On Fri, Jan 13, 2023 at 03:31:46PM -0800, Florian Fainelli wrote:
>> Not all toolchain kernel headers may contain upstream commit
>> 2618be7dccf8739b89e1906b64bd8d551af351e6 ("uapi: fix linux/if.h
>> userspace compilation errors") which is included in v4.11 and onwards.
>> Err on the side of caution by including sys/socket.h ahead of including
>> linux/if.h.
>>
>> Fixes: 1fa60003a8b8 ("misc: header includes cleanup")
>> Reported-by: Markus Mayer <mmayer@...adcom.com>
>> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
>> ---
>>   internal.h | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/internal.h b/internal.h
>> index b80f77afa4c0..f7aaaf5229f4 100644
>> --- a/internal.h
>> +++ b/internal.h
>> @@ -21,6 +21,7 @@
>>   #include <unistd.h>
>>   #include <endian.h>
>>   #include <sys/ioctl.h>
>> +#include <sys/socket.h>
>>   #include <linux/if.h>
>>   
>>   #include "json_writer.h"
> 
> No objection but I wonder if it wouldn't make sense to add linux/if.h to
> the header copies in uapi/ instead as then we could also drop the
> fallback definition of ALTIFNAMSIZ and perhaps more similar hacks.

Humm, I wondered about that but it seems like opening a possible can of 
worms as the history of include/uapi/linux/if.h changed across multiple 
versions. As long as it does compile, why not :)
-- 
Florian