Re: [PATCH 1/3] net: introduce a list of device addresses dev_addr_list

Patrick McHardy
2009-04-15T10:48:14Z

David Miller wrote:
> From: Patrick McHardy <kaber@trash.net>
> Date: Wed, 15 Apr 2009 12:41:01 +0200
>
>> Herbert (I think) suggested to make address list updates in softirq
>> context a two-step process, where addresses would first be added to
>> a temporary list and the final change would be done in process context
>> while holding the RTNL.
>>
>> Given the complicated mess we currently have, this would be a very
>> worthwhile change IMO.
>
> This would break the IPV6 TAHI tests if you think we could use
> such an idea for that.
>
> When IPV6 packets arrive that influence multicast and unicast
> address lists, the effect must be essentially immediate. Such
> that a subsequent packet will cause the kernel the behave
> with the necessary side effects, no matter how quickly that
> next packet arrives.

I see, thanks for the explanation.