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

[Stefan Hajnoczi]

On Thu, Jun 25, 2015 at 2:10 AM, Jonathan Liu <address@hidden> wrote:
> Is there anything else you would like me to test?

Thanks, I will submit a final patch and CC you so you can test it.

Stefan

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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>

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