Wolfgang Grandegger wrote:
quoted text
> David Miller wrote:
>> From: Wolfgang Grandegger <wg@grandegger.com>
>> Date: Sat, 07 Nov 2009 10:53:13 +0100
>>
>>> On older kernels, e.g. 2.6.27, a WARN_ON dump in rtmsg_ifinfo()
>>> is thrown when the CAN device is registered due to insufficient
>>> skb space, as reported by various users. This patch adds the
>>> rtnl_link_ops "get_size" to fix the problem. I think this patch
>>> is required for more recent kernels as well, even if no WARN_ON
>>> dumps are triggered. Maybe we also need "get_xstats_size" for
>>> the CAN xstats.
>>>
>>> Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
>> Applied to net-2.6, thanks Wolfgang.
> 
> Thanks, the commit message included some questions. What is the rule
> using the rtnl_link_ops "get_size" or "get_xstats_size". Are these
> mandatory if the corresponding fill functions are used?

Yes. You also need a get_xstats_size() function.
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