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From: Felix Fietkau <nbd@openwrt.org>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: Krishna Chaitanya <chaitanya.mgit@gmail.com>,
	linux-wireless <linux-wireless@vger.kernel.org>,
	Sebastian Gottschall <s.gottschall@dd-wrt.com>,
	Johannes Berg <johannes@sipsolutions.net>,
	netdev <netdev@vger.kernel.org>
Subject: Re: Regression in 3.9 caused by "bridge: respect RFC2863 operational state"
Date: Thu, 02 May 2013 02:53:59 +0200	[thread overview]
Message-ID: <5181B927.5010407@openwrt.org> (raw)
In-Reply-To: <20130501154904.0ea31991@nehalam.linuxnetplumber.net>

On 2013-05-02 12:49 AM, Stephen Hemminger wrote:
> On Wed, 01 May 2013 23:06:16 +0200
> Felix Fietkau <nbd@openwrt.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

WARNING: multiple messages have this Message-ID (diff)
From: Felix Fietkau <nbd-p3rKhJxN3npAfugRpC6u6w@public.gmane.org>
To: Stephen Hemminger
	<stephen-OTpzqLSitTUnbdJkjeBofR2eb7JE58TQ@public.gmane.org>
Cc: Krishna Chaitanya
	<chaitanya.mgit-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	linux-wireless
	<linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Sebastian Gottschall
	<s.gottschall-t37Kgv3TaIPQT0dZR+AlfA@public.gmane.org>,
	Johannes Berg <johannes-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>,
	netdev <netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: Regression in 3.9 caused by "bridge: respect RFC2863 operational state"
Date: Thu, 02 May 2013 02:53:59 +0200	[thread overview]
Message-ID: <5181B927.5010407@openwrt.org> (raw)
In-Reply-To: <20130501154904.0ea31991-We1ePj4FEcvRI77zikRAJc56i+j3xesD0e7PPNI6Mm0@public.gmane.org>

On 2013-05-02 12:49 AM, Stephen Hemminger wrote:
> On Wed, 01 May 2013 23:06:16 +0200
> Felix Fietkau <nbd-p3rKhJxN3npAfugRpC6u6w@public.gmane.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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  reply	other threads:[~2013-05-02  0:54 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-01 19:02 Regression in 3.9 caused by "bridge: respect RFC2863 operational state" Felix Fietkau
2013-05-01 19:49 ` Krishna Chaitanya
2013-05-01 19:49   ` Krishna Chaitanya
     [not found]   ` <CAOaVG179Rx_JfV99mbjWhwQTALb5gh+2_WVFWDSbngA0qkzoGw@mail.gmail.com>
2013-05-01 21:06     ` Felix Fietkau
2013-05-01 21:06       ` Felix Fietkau
2013-05-01 22:49       ` Stephen Hemminger
2013-05-01 22:49         ` Stephen Hemminger
2013-05-02  0:53         ` Felix Fietkau [this message]
2013-05-02  0:53           ` Felix Fietkau
     [not found] <CAFuUQkhHsRZMnNYBbVZU0=BcAKMEktzYgPv6oc=CMFd7MFDi6g@mail.gmail.com>
2015-12-04  2:31 ` YanBo
2016-01-19 15:45   ` Shajakhan, Mohammed Shafi (Mohammed Shafi)
2016-01-19 15:45     ` Shajakhan, Mohammed Shafi (Mohammed Shafi)
2016-01-19 21:10     ` YanBo
2016-01-19 21:10       ` YanBo
2016-01-19 21:48 ` Stephen Hemminger
2016-01-19 21:48   ` Stephen Hemminger
2016-01-19 21:55   ` Felix Fietkau
2016-01-19 21:55     ` Felix Fietkau

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