From: Stephen Hemminger <stephen@networkplumber•org>
To: Felix Fietkau <nbd@openwrt•org>
Cc: netdev@vger•kernel.org
Subject: Re: [PATCH net] bridge: allow receiption on disabled port
Date: Thu, 10 Oct 2013 13:36:46 -0700 [thread overview]
Message-ID: <20131010133646.1bdd42c1@nehalam.linuxnetplumber.net> (raw)
In-Reply-To: <1381409570-1892-1-git-send-email-nbd@openwrt.org>
On Thu, 10 Oct 2013 14:52:50 +0200
Felix Fietkau <nbd@openwrt•org> wrote:
> When an ethernet device is enslaved to a bridge, and the bridge STP
> detects loss of carrier (or operational state down), then normally
> packet receiption is blocked.
>
> This breaks control applications like WPA which maybe expecting to
> receive packets to negotiate to bring link up. The bridge needs to
> block forwarding packets from these disabled ports, but there is no
> hard requirement to not allow local packet delivery.
>
> Signed-off-by: Stephen Hemminger <stephen@networkplumber•org>
> Signed-off-by: Felix Fietkau <nbd@openwrt•org>
No. This will cause duplicate packets to be delivered.
If doing a link layer protocol like WPA then it should be done directly
on the underlying device, not the bridge itself.
next prev parent reply other threads:[~2013-10-10 20:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-10 12:52 [PATCH net] bridge: allow receiption on disabled port Felix Fietkau
2013-10-10 20:36 ` Stephen Hemminger [this message]
2013-10-10 20:56 ` Felix Fietkau
2013-10-10 21:52 ` Stephen Hemminger
2013-10-10 22:08 ` Felix Fietkau
2013-10-11 2:35 ` Stephen Hemminger
2013-10-11 10:18 ` Felix Fietkau
2013-10-11 15:10 ` Stephen Hemminger
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