is if_bridge broken?
Giorgos Keramidas
keramida at ceid.upatras.gr
Sat Aug 12 07:31:42 UTC 2006
On 2006-08-12 09:18, Christian Brueffer <brueffer at FreeBSD.org> wrote:
>On Sat, Aug 12, 2006 at 09:58:08AM +0300, keramida at FreeBSD.org wrote:
>> I am trying to run QEMU on a fairly recent snapshot of HEAD, but it failed with:
>>
>> # DISPLAY=:0 qemu -win2k-hack -hda windows.img -boot c -net nic -net tap
>> bridge0: creating bridge interface
>> ifconfig: SIOCIFCREATE2: Invalid argument
>> /etc/qemu-ifup: ERROR: bridge0: failed to create
>> /etc/qemu-ifup: could not launch network script
>> Could not initialize device 'tap'
>> #
>>
>> At about the same time, `ifconfig bridge0 create' fails with:
>>
>> Aug 12 09:36:58 gothmog kernel: KLD if_bridge.ko: depends on bridgestp - not available
>> Aug 12 09:36:58 gothmog giorgos: /etc/qemu-ifup: ERROR: bridge0: failed to create
>> Aug 12 09:37:17 gothmog kernel: KLD if_bridge.ko: depends on bridgestp - not available
>> Aug 12 09:48:25 gothmog kernel: KLD if_bridge.ko: depends on bridgestp - not available
>> Aug 12 09:48:49 gothmog kernel: KLD if_bridge.ko: depends on bridgestp - not available
>>
>> It appears to have been caused by src/sys/net/if.h revision 1.261:
>>
>> date: 2006/07/09 06:04:00; author: sam; state: Exp; lines: +6 -3
>> Revise network interface cloning to take an optional opaque
>> parameter that can specify configuration parameters:
>> o rev cloner api's to add optional parameter block
>> o add SIOCCREATE2 that accepts parameter data
>> o rev vlan support to use new api (maintain old code)
>>
>> Reviewed by: arch@
>>
>> Any idea how if_bridge can be fixed again?
>
> Have you tried loading the bridgestp module as suggested? Is has been
> split out of if_bridge recently and exists in my CURRENT system.
Yes :-(
It doesn't make a lot of difference:
root at gothmog:/root# kldstat | grep stp
17 1 0xc58f0000 4000 bridgestp.ko
root at gothmog:/root# ifconfig bridge0 create
ifconfig: SIOCIFCREATE2: Invalid argument
root at gothmog:/root#
This is with a kernel built from a checkout of 2006.08.11.10.58.24:
$ uname -v
FreeBSD 7.0-CURRENT #0: Fri Aug 11 22:23:01 EEST 2006 \
build at gothmog.pc:/home/build/obj/home/build/src/sys/GOTHMOG
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