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

Patrick McHardy
2009-04-15T10:15:29Z

David Miller wrote:
> From: Eric Dumazet <dada1@cosmosbay.com>
> Date: Wed, 15 Apr 2009 11:27:50 +0200
>
>> Since you obviously need a write lock here to be sure following
>> can be done by one cpu only.
>>
>> You have same problem all over this patch.
>
> RTNL semaphore is held across all modification operations.

If this will also be used for multicast lists, changes can happen
(IPv6) without the RTNL.