netdev - Re: Regression in 3.9 caused by "bridge: respect RFC2863 operational state"

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Message-ID: <5181B927.5010407@openwrt.org>
Date:	Thu, 02 May 2013 02:53:59 +0200
From:	Felix Fietkau <nbd@...nwrt.org>
To:	Stephen Hemminger <stephen@...workplumber.org>
CC:	Krishna Chaitanya <chaitanya.mgit@...il.com>,
	linux-wireless <linux-wireless@...r.kernel.org>,
	Sebastian Gottschall <s.gottschall@...wrt.com>,
	Johannes Berg <johannes@...solutions.net>,
	netdev <netdev@...r.kernel.org>
Subject: Re: Regression in 3.9 caused by "bridge: respect RFC2863 operational
 state"

On 2013-05-02 12:49 AM, Stephen Hemminger wrote:
> On Wed, 01 May 2013 23:06:16 +0200
> Felix Fietkau <nbd@...nwrt.org> wrote:
> 
>> On 2013-05-01 10:21 PM, Stephen Hemminger wrote:
>> > What about using AF_PACKET bound to underlying wireless device and the
>> > packet type. You can even use BPF to filter.
>> As far as I know, AF_PACKET only works when not binding it to the packet
>> type (otherwise it get stolen by the rx handler).
> 
> You can do AF_PACKET and it gets handle before rx_handler.
If I don't bind it to a protocol, it ends up in ptype_all, if I do, it
ends up in &ptype_base. ptype_all is processed before the rx_handler,
ptype_base is processed after the rx handler.
Hooking into ptype_all wastes tons of CPU cycles, hooking into
ptype_base does not solve the problem.

- Felix
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