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

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Message-ID: <20160119134832.3ab2f04b@xeon-e3>
Date:	Tue, 19 Jan 2016 13:48:32 -0800
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	YanBo <dreamfly281@...il.com>
Cc:	Felix Fietkau <nbd@...nwrt.org>, jouni@....qualcomm.com,
	kvalo@...eaurora.org, 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>, hostap@...ts.infradead.org
Subject: Re: Regression in 3.9 caused by "bridge: respect RFC2863
 operational state"

On Thu, 3 Dec 2015 18:29:00 -0800
YanBo <dreamfly281@...il.com> wrote:

> Sorry to pick up this thread again,  it looks this issue still existed  in
> the newer 4.3 kernel. (The EAP frames can not be received by wireless
> interface due to the bridge interface,
> http://marc.info/?l=linux-wireless&m=136743495526905&w=2)
> 
> Wonder is anyone know some update for this issue?  Currently the only
> workaround is make the 4-address  AP and STA associated in security mode
> firstly and then create the bridge, the renew key configuration also need
> be disable at the hostapd side to  avoid renew the key at bridge status.
> 
> Thanks
> Yanbo

How does wireless device indicate that is up?  It may just be that
the code is missing the logic to propagate operstate correctly.
This is normally done by netif_stacked_transfer_operstate and linkwatch
event.

Also STP can be disabled if you don't need it.