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Bug 852965

Summary:

set_link can not change rtl8139 network card's status

Product:

Red Hat Enterprise Linux 6

Reporter:

FuXiangChun <xfu>

Component:

qemu-kvm

Assignee:

Amos Kong <akong>

Status:

CLOSED ERRATA

QA Contact:

Virtualization Bugs <virt-bugs>

Severity:

medium

Docs Contact:

Priority:

medium

Version:

6.4

CC:

acathrow, ailan, areis, bsarathy, chayang, dyasny, flang, juzhang, mazhang, michen, mkenneth, qzhang, rhod, shu, sluo, virt-maint, wdai

Target Milestone:

Target Release:

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Hardware:

x86_64

OS:

Linux

Whiteboard:

Fixed In Version:

qemu-kvm-0.12.1.2-2.326.el6

Doc Type:

Bug Fix

Doc Text:

Story Points:

---

Clone Of:

Environment:

Last Closed:

2013-02-21 07:39:17 UTC

Type:

Bug

Regression:

---

Mount Type:

---

Documentation:

---

CRM:

Verified Versions:

Category:

---

oVirt Team:

---

RHEL 7.3 requirements from Atomic Host:

Cloudforms Team:

---

Target Upstream Version:

Embargoed:

Attachments:

Description	Flags
Patch to add link status for rtl8139	none

Description FuXiangChun 2012-08-30 06:15:50 UTC

Description of problem:
set rtl8139 netowrk off status in qemu monitor, but it is still "up"status and network is not available in guest.BTW,whatever vhost is disable or enable, I will get the same result. 

notes:
set_link command works well with virtio and e1000 adapter.  


Version-Release number of selected component (if applicable):
# uname -r
2.6.32

# qemu-kvm -version
QEMU PC emulator version 0.12.1

How reproducible:
100%

Steps to Reproduce:
1.boot guest with rtl8139
# qemu-kvm -M rhel6.3.0 -cpu Opteron_G3 -enable-kvm -m 4G -smp 4,sockets=2,cores=2,threads=1,maxcpus=6 -usb -device usb-tablet,id=input0 -name virt-nic -uuid 9ed5a909-5c33-4bc0-960c-29ecfc61a502 -drive file=rhel6.4-virt-nic-1.qcow2,format=qcow2,if=none,id=drive-disk,cache=none,werror=stop,rerror=stop,aio=native -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x3,drive=drive-disk,id=virtio_image,bootindex=1 -netdev tap,id=hostnet0,script=/etc/qemu-ifup,vhost=off -device virtio-net-pci,netdev=hostnet0,id=virtio-net-pci0,mac=00:24:21:7F:91:AB,bus=pci.0,addr=0x4,indirect_desc=off,event_idx=off,status=off -vnc :1 -bios /usr/share/seabios/bios-pm.bin -device sga -chardev socket,id=serial0,path=/var/test1,server,nowait -device isa-serial,chardev=serial0 -boot menu=on -monitor stdio -qmp tcp:0:4444,server,nowait -netdev tap,id=hostnet1,script=/etc/qemu-ifup,vhost=on -netdev tap,id=hostnet2,script=/etc/qemu-ifup,vhost=on -device rtl8139,netdev=hostnet2,id=virtio-net-pci2,mac=00:24:21:7F:93:AB

2.info network
(qemu) info network 
Devices not on any VLAN:
  hostnet0: ifname=tap0,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown peer=virtio-net-pci0
  hostnet1: ifname=tap1,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown
  hostnet2: ifname=tap2,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown peer=virtio-net-pci2
  virtio-net-pci0: model=virtio-net-pci,macaddr=00:24:21:7f:91:ab peer=hostnet0
  virtio-net-pci2: model=rtl8139,macaddr=00:24:21:7f:93:ab peer=hostnet2

3.check rtl8139 status in guest
#cat /sys/class/net/eth6/operstate 
up

4.change rtl8139 status in monitor
(qemu) set_link virtio-net-pci2 off

5.re-check rtl8139 status in guest
#cat /sys/class/net/eth6/operstate 

Actual results:
#cat /sys/class/net/eth6/operstate 
up

Expected results:
#cat /sys/class/net/eth6/operstate 
down

Additional info:

Comment 2 FuXiangChun 2012-08-30 07:30:05 UTC

additional info:
qemu-kvm-0.12.1.2-2.295.el6.x86_64 and qemu-kvm-0.12.1.2-2.307.el6.x86_64 have the issue.

Comment 4 jason wang 2012-09-07 10:03:07 UTC

Created attachment 610677 [details]
Patch to add link status for rtl8139

Comment 6 Amos Kong 2012-09-07 11:19:14 UTC

(In reply to comment #4)
> Created attachment 610677 [details]
> Patch to add link status for rtl8139

This patch doesn't work with windows guest, I would drive into rtl8139cp specific.
http://realtek.info/pdf/rtl8139cp.pdf

Comment 7 Amos Kong 2012-09-10 08:00:29 UTC

(In reply to comment #6)
> (In reply to comment #4)
> > Created attachment 610677 [details]
> > Patch to add link status for rtl8139
> 
> This patch doesn't work with windows guest, I would drive into rtl8139cp
> specific. http://realtek.info/pdf/rtl8139cp.pdf

After updated the Media Status Register, it works with Windows guest.
Posted patch to upstream: http://patchwork.ozlabs.org/patch/182816/

Comment 8 Amos Kong 2012-09-28 05:09:26 UTC

Link status could not be migrated, I will also fix this problem in this patchset.

Comment 12 mazhang 2012-11-08 08:14:10 UTC

Reproduced bug on qemu-kvm-0.12.1.2-2.325.el6.x86_64.rpm&2.6.32-335.el6.x86_64.

host :
(qemu) info network 
Devices not on any VLAN:
  hostnet0: ifname=tap0,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown peer=virtio-net-pci0
  hostnet1: ifname=tap1,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown
  hostnet2: ifname=tap2,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown peer=virtio-net-pci2
  virtio-net-pci0: model=virtio-net-pci,macaddr=00:24:21:7f:91:ab peer=hostnet0
  virtio-net-pci2: model=rtl8139,macaddr=00:24:21:7f:93:ab peer=hostnet2
(qemu) [Thread 0x7ffff005f700 (LWP 6717) exited]
set
set_link      set_password  
(qemu) set_link virtio-net-pci2 off
guest :
#cat /sys/class/net/eth6/operstate 
up

Additional info:
/usr/libexec/qemu-kvm -M rhel6.3.0 -cpu Nehalem -enable-kvm -m 4G -smp 4,sockets=2,cores=2,threads=1,maxcpus=6 -usb -device usb-tablet,id=input0 -name virt-nic -uuid 9ed5a909-5c33-4bc0-960c-29ecfc61a502 -drive file=/root/image/rhel6u4.qcow2,format=qcow2,if=none,id=drive-disk,cache=none,werror=stop,rerror=stop,aio=native -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x3,drive=drive-disk,id=virtio_image,bootindex=1 -netdev tap,id=hostnet0,script=/etc/qemu-ifup,vhost=off -device virtio-net-pci,netdev=hostnet0,id=virtio-net-pci0,mac=00:24:21:7F:91:AB,bus=pci.0,addr=0x4,indirect_desc=off,event_idx=off,status=off -vnc :0 -chardev socket,id=serial0,path=/var/test1,server,nowait -device isa-serial,chardev=serial0 -boot menu=on -monitor stdio -qmp tcp:0:4444,server,nowait -netdev tap,id=hostnet1,script=/etc/qemu-ifup,vhost=on -netdev tap,id=hostnet2,script=/etc/qemu-ifup,vhost=on -device rtl8139,netdev=hostnet2,id=virtio-net-pci2,mac=00:24:21:7F:93:AB

Comment 13 mazhang 2012-11-08 08:22:52 UTC

Verified this bug on qemu-kvm-0.12.1.2-2.334.el6.x86_64.rpm&2.6.32-335.el6.x86_64.

Steps:
1 boot guest with rtl8139
/usr/libexec/qemu-kvm -M rhel6.3.0 -cpu Nehalem -enable-kvm -m 4G -smp 4,sockets=2,cores=2,threads=1,maxcpus=6 -usb -device usb-tablet,id=input0 -name virt-nic -uuid 9ed5a909-5c33-4bc0-960c-29ecfc61a502 -drive file=/root/image/rhel6u4.qcow2,format=qcow2,if=none,id=drive-disk,cache=none,werror=stop,rerror=stop,aio=native -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x3,drive=drive-disk,id=virtio_image,bootindex=1 -netdev tap,id=hostnet0,script=/etc/qemu-ifup,vhost=off -device virtio-net-pci,netdev=hostnet0,id=virtio-net-pci0,mac=00:24:21:7F:91:AB,bus=pci.0,addr=0x4,indirect_desc=off,event_idx=off,status=off -vnc :0 -chardev socket,id=serial0,path=/var/test1,server,nowait -device isa-serial,chardev=serial0 -boot menu=on -monitor stdio -qmp tcp:0:4444,server,nowait -netdev tap,id=hostnet1,script=/etc/qemu-ifup,vhost=on -netdev tap,id=hostnet2,script=/etc/qemu-ifup,vhost=on -device rtl8139,netdev=hostnet2,id=virtio-net-pci2,mac=00:24:21:7F:93:AB

2 info network
Devices not on any VLAN:
  hostnet0: ifname=tap0,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown peer=virtio-net-pci0
  hostnet1: ifname=tap1,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown
  hostnet2: ifname=tap2,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown peer=virtio-net-pci2
  virtio-net-pci0: model=virtio-net-pci,macaddr=00:24:21:7f:91:ab peer=hostnet0
  virtio-net-pci2: model=rtl8139,macaddr=00:24:21:7f:93:ab peer=hostnet2

3 check rtl8139 status in guest
#cat /sys/class/net/eth6/operstate 
up

4 change rtl8139 status in monitor
(qemu) set_link virtio-net-pci2 off 

5 re-check rtl8139 status in guest
#cat /sys/class/net/eth6/operstate 
down

So this bug was fixed.

Comment 15 errata-xmlrpc 2013-02-21 07:39:17 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-0527.html