From mboxrd@z Thu Jan  1 00:00:00 1970
From: michi1@michaelblizek.twilightparadox.com (michi1 at michaelblizek.twilightparadox.com)
Date: Thu, 29 Dec 2011 19:24:21 +0100
Subject: struct net_device locking
Message-ID: <20111229182421.GB2173@grml>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

Hi!

I could not see any locking being done with "struct net_device" at all even
tough there are many read+write accesses to non-atomic variables. For example:

Changing mac addresses:
user space netlink socket call to set IFLA_ADDRESS
http://lxr.linux.no/linux+v3.1.6/net/core/rtnetlink.c#L1521
http://lxr.linux.no/linux+v3.1.6/net/core/rtnetlink.c#L1322
call to device, e.g. http://lxr.linux.no/linux+v3.1.6/drivers/net/e100.c#L2195

Sending an arp response:
http://lxr.linux.no/linux+v3.1.6/net/ipv4/arp.c#L859

Any ideas/pointers?

	-Michi
-- 
programing a layer 3+4 network protocol for mesh networks
see http://michaelblizek.twilightparadox.com