Re: [Qemu-devel] [Bug 1467240] [NEW] Regression - bridged networking broken for Mac OS X guest

[Peter Maydell]

Fam, Stefan -- any ideas?

thanks
-- PMM

On 21 June 2015 at 12:26, Jonathan Liu <address@hidden> wrote:
> Public bug reported:
>
> Using the instructions at
> http://www.contrib.andrew.cmu.edu/~somlo/OSXKVM/ for running Mac OS X
> Snow Leopard under QEMU, bridged networking is broken when using QEMU
> git. The result is that Mac OS X is unable to obtain an IP address using
> DHCP. It works in the latest stable release - QEMU 2.3.0.
>
> Replace "-netdev user,id=hub0port0" with "-netdev
> bridge,br=br0,id=hub0port0" when testing bridged networking.
>
> Bisecting the git repository shows the following bad commit:
> commit a90a7425cf592a3afeff3eaf32f543b83050ee5c
> Author: Fam Zheng <address@hidden>
> Date:   Thu Jun 4 14:45:17 2015 +0800
>
>     tap: Drop tap_can_send
>
>     This callback is called by main loop before polling s->fd, if it returns
>     false, the fd will not be polled in this iteration.
>
>     This is redundant with checks inside read callback. After this patch,
>     the data will be sent to peer when it arrives. If the device can't
>     receive, it will be queued to incoming_queue, and when the device status
>     changes, this queue will be flushed.
>
>     Signed-off-by: Fam Zheng <address@hidden>
>     Message-id: address@hidden
>     Signed-off-by: Stefan Hajnoczi <address@hidden>
>
> ** Affects: qemu
>      Importance: Undecided
>          Status: New
>
> --
> You received this bug notification because you are a member of qemu-
> devel-ml, which is subscribed to QEMU.
> https://bugs.launchpad.net/bugs/1467240
>
> Title:
>   Regression - bridged networking broken for Mac OS X guest
>
> Status in QEMU:
>   New
>
> Bug description:
>   Using the instructions at
>   http://www.contrib.andrew.cmu.edu/~somlo/OSXKVM/ for running Mac OS X
>   Snow Leopard under QEMU, bridged networking is broken when using QEMU
>   git. The result is that Mac OS X is unable to obtain an IP address
>   using DHCP. It works in the latest stable release - QEMU 2.3.0.
>
>   Replace "-netdev user,id=hub0port0" with "-netdev
>   bridge,br=br0,id=hub0port0" when testing bridged networking.
>
>   Bisecting the git repository shows the following bad commit:
>   commit a90a7425cf592a3afeff3eaf32f543b83050ee5c
>   Author: Fam Zheng <address@hidden>
>   Date:   Thu Jun 4 14:45:17 2015 +0800
>
>       tap: Drop tap_can_send
>
>       This callback is called by main loop before polling s->fd, if it returns
>       false, the fd will not be polled in this iteration.
>
>       This is redundant with checks inside read callback. After this patch,
>       the data will be sent to peer when it arrives. If the device can't
>       receive, it will be queued to incoming_queue, and when the device status
>       changes, this queue will be flushed.
>
>       Signed-off-by: Fam Zheng <address@hidden>
>       Message-id: address@hidden
>       Signed-off-by: Stefan Hajnoczi <address@hidden>
>
> To manage notifications about this bug go to:
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>