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Re: [Qemu-devel] [PATCH v3] fix qemu_flush_queued_packets() in presence
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [Qemu-devel] [PATCH v3] fix qemu_flush_queued_packets() in presence of a hub |
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Date: |
Fri, 8 Feb 2013 10:46:57 +0100 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Tue, Feb 05, 2013 at 05:53:31PM +0100, Luigi Rizzo wrote:
> DESCRIPTION:
>
> When frontend and backend are connected through a hub as below
> (showing only one direction), and the frontend (or in general, all
> output ports of the hub) cannot accept more traffic, the backend
> queues packets in queue-A.
>
> When the frontend (or in general, one output port) becomes ready again,
> quemu tries to flush packets from queue-B, which is unfortunately empty.
>
> e1000.0 <--[queue B]-- hub0port0(hub)hub0port1 <--[queue A]-- tap.0
>
> To fix this i propose to introduce a new function net_hub_flush()
> which is called when trying to flush a queue connected to a hub.
>
> cheers
> luigi
>
> Signed-off-by: Luigi Rizzo <address@hidden>
Thanks, applied to the net-next tree:
https://github.com/stefanha/qemu/commits/net-next
This patch will be part of the first net pull request for QEMU 1.5.
Stefan