if_em and if_vlan

[Jack Vogel]

This is not an issue in my current driver base, I am having our test
group do some checking since I am not aware of the specific change
that fixed this, I am not sure if the CURRENT code has the problem
or not, also being tested.

Jack


On 9/26/07, Jon Otterholm <jon.otterholm at ide.resurscentrum.se> wrote:
> Hi.
>
> I get "Device busy" when trying to change VLAN-id on a sub-if to em0:
>
> [root at host /home/user]# ifconfig vlan100 vlan 100 vlandev em0
> ifconfig: SIOCSETVLAN: Device busy
>
> [root at host /home/user]# dmesg | grep em0
> em0: <Intel(R) PRO/1000 Network Connection Version - 6.2.9> port
> 0x4000-0x401f mem 0xee200000-0xee21ffff irq 16 at device 0.0 on pci9
>
> [root at host /home/user]# pciconf -vl
> em0 at pci9:0:0:   class=0x020000 card=0x108c15d9 chip=0x108c8086 rev=0x03
> hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = 'PRO/1000 PM'
>     class      = network
>     subclass   = ethernet
>
> [root at host /home/user]# uname -a
> FreeBSD host 6.2-STABLE FreeBSD 6.2-STABLE #1: Tue Sep 25 22:29:05 CEST
> 2007     user at host:/usr/obj/usr/src/sys/host  i386
>
> It works if I create a new interface like:
>
> [root at host /home/user]# ifconfig vlan100 create
>
> and setting the vid and vlandev:
>
> [root at host /home/user]# ifconfig vlan100 vlan 100 vlandev em0
>
> But when I try to change the setting:
>
> [root at host /home/user]# ifconfig vlan100 vlan 100 vlandev em1
> ifconfig: SIOCSETVLAN: Device busy
>
> Even if I destroy the interface and create it again I get "Device busy":
>
> [root at host /home/user]# ifconfig vlan100 destroy
> [root at host /home/user]# ifconfig vlan100 create
> [root at host /home/user]# ifconfig vlan100 vlan 100 vlandev em1
> ifconfig: SIOCSETVLAN: Device busy
>
> Motherboard is Supermicro PDSMi-LN4+ with four em-interfaces.
>
> How do I solve this?
>
> //Jon
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