* Re: net: bridge: propagate error code and extack from br_mc_disabled_update
[not found] ` <20210421181808.5210-1-borntraeger@de.ibm.com>
@ 2021-04-21 18:35 ` Christian Borntraeger
2021-04-21 18:37 ` Florian Fainelli
0 siblings, 1 reply; 4+ messages in thread
From: Christian Borntraeger @ 2021-04-21 18:35 UTC (permalink / raw)
To: olteanv
Cc: andrew, davem, f.fainelli, idosch, jiri, kuba, netdev, nikolay,
roopa, vladimir.oltean, linux-next, kvm list, linux-s390
On 21.04.21 20:18, Christian Borntraeger wrote:
> Whatever version landed in next, according to bisect this broke libvirt/kvms use of bridges:
>
>
> # virsh start s31128001
> error: Failed to start domain 's31128001'
> error: Unable to add bridge virbr1 port vnet0: Operation not supported
>
> # grep vnet0 /var/log/libvirt/libvirtd.log
>
> 2021-04-21 07:43:09.453+0000: 2460: info : virNetDevTapCreate:240 : created device: 'vnet0'
> 2021-04-21 07:43:09.453+0000: 2460: debug : virNetDevSetMACInternal:287 : SIOCSIFHWADDR vnet0 MAC=fe:bb:83:28:01:02 - Success
> 2021-04-21 07:43:09.453+0000: 2460: error : virNetDevBridgeAddPort:633 : Unable to add bridge virbr1 port vnet0: Operation not supported
> 2021-04-21 07:43:09.466+0000: 2543: debug : udevHandleOneDevice:1695 : udev action: 'add': /sys/devices/virtual/net/vnet0
>
> Christian
>
For reference:
ae1ea84b33dab45c7b6c1754231ebda5959b504c is the first bad commit
commit ae1ea84b33dab45c7b6c1754231ebda5959b504c
Author: Florian Fainelli <f.fainelli@gmail.com>
Date: Wed Apr 14 22:22:57 2021 +0300
net: bridge: propagate error code and extack from br_mc_disabled_update
Some Ethernet switches might only be able to support disabling multicast
snooping globally, which is an issue for example when several bridges
span the same physical device and request contradictory settings.
Propagate the return value of br_mc_disabled_update() such that this
limitation is transmitted correctly to user-space.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/bridge/br_multicast.c | 28 +++++++++++++++++++++-------
net/bridge/br_netlink.c | 4 +++-
net/bridge/br_private.h | 3 ++-
net/bridge/br_sysfs_br.c | 8 +-------
4 files changed, 27 insertions(+), 16 deletions(-)
not sure if it matters this is on s390.
A simple reproducer is virt-install, e.g.
virt-install --name test --disk size=12 --memory=2048 --vcpus=2 --location http://ports.ubuntu.com/ubuntu-ports/dists/bionic/main/installer-s390x/
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: net: bridge: propagate error code and extack from br_mc_disabled_update
2021-04-21 18:35 ` net: bridge: propagate error code and extack from br_mc_disabled_update Christian Borntraeger
@ 2021-04-21 18:37 ` Florian Fainelli
2021-04-21 18:46 ` Vladimir Oltean
0 siblings, 1 reply; 4+ messages in thread
From: Florian Fainelli @ 2021-04-21 18:37 UTC (permalink / raw)
To: Christian Borntraeger, olteanv
Cc: andrew, davem, idosch, jiri, kuba, netdev, nikolay, roopa,
vladimir.oltean, linux-next, kvm list, linux-s390
On 4/21/2021 11:35 AM, Christian Borntraeger wrote:
>
>
> On 21.04.21 20:18, Christian Borntraeger wrote:
>> Whatever version landed in next, according to bisect this broke
>> libvirt/kvms use of bridges:
>>
>>
>> # virsh start s31128001
>> error: Failed to start domain 's31128001'
>> error: Unable to add bridge virbr1 port vnet0: Operation not supported
>>
>> # grep vnet0 /var/log/libvirt/libvirtd.log
>>
>> 2021-04-21 07:43:09.453+0000: 2460: info : virNetDevTapCreate:240 :
>> created device: 'vnet0'
>> 2021-04-21 07:43:09.453+0000: 2460: debug :
>> virNetDevSetMACInternal:287 : SIOCSIFHWADDR vnet0
>> MAC=fe:bb:83:28:01:02 - Success
>> 2021-04-21 07:43:09.453+0000: 2460: error : virNetDevBridgeAddPort:633
>> : Unable to add bridge virbr1 port vnet0: Operation not supported
>> 2021-04-21 07:43:09.466+0000: 2543: debug : udevHandleOneDevice:1695 :
>> udev action: 'add': /sys/devices/virtual/net/vnet0
>>
>> Christian
>>
>
> For reference:
>
> ae1ea84b33dab45c7b6c1754231ebda5959b504c is the first bad commit
> commit ae1ea84b33dab45c7b6c1754231ebda5959b504c
> Author: Florian Fainelli <f.fainelli@gmail.com>
> Date: Wed Apr 14 22:22:57 2021 +0300
>
> net: bridge: propagate error code and extack from br_mc_disabled_update
> Some Ethernet switches might only be able to support disabling
> multicast
> snooping globally, which is an issue for example when several bridges
> span the same physical device and request contradictory settings.
> Propagate the return value of br_mc_disabled_update() such that this
> limitation is transmitted correctly to user-space.
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
> Signed-off-by: David S. Miller <davem@davemloft.net>
>
> net/bridge/br_multicast.c | 28 +++++++++++++++++++++-------
> net/bridge/br_netlink.c | 4 +++-
> net/bridge/br_private.h | 3 ++-
> net/bridge/br_sysfs_br.c | 8 +-------
> 4 files changed, 27 insertions(+), 16 deletions(-)
>
> not sure if it matters this is on s390.
> A simple reproducer is virt-install, e.g.
> virt-install --name test --disk size=12 --memory=2048 --vcpus=2
> --location
> http://ports.ubuntu.com/ubuntu-ports/dists/bionic/main/installer-s390x/
Thanks, I will kick off a reproducer and let you know.
--
Florian
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: net: bridge: propagate error code and extack from br_mc_disabled_update
2021-04-21 18:37 ` Florian Fainelli
@ 2021-04-21 18:46 ` Vladimir Oltean
2021-04-21 18:54 ` Christian Borntraeger
0 siblings, 1 reply; 4+ messages in thread
From: Vladimir Oltean @ 2021-04-21 18:46 UTC (permalink / raw)
To: Florian Fainelli
Cc: Christian Borntraeger, andrew, davem, idosch, jiri, kuba, netdev,
nikolay, roopa, vladimir.oltean, linux-next, kvm list,
linux-s390
On Wed, Apr 21, 2021 at 11:37:25AM -0700, Florian Fainelli wrote:
> On 4/21/2021 11:35 AM, Christian Borntraeger wrote:
> > On 21.04.21 20:18, Christian Borntraeger wrote:
> >> Whatever version landed in next, according to bisect this broke
> >> libvirt/kvms use of bridges:
> >>
> >>
> >> # virsh start s31128001
> >> error: Failed to start domain 's31128001'
> >> error: Unable to add bridge virbr1 port vnet0: Operation not supported
> >>
> >> # grep vnet0 /var/log/libvirt/libvirtd.log
> >>
> >> 2021-04-21 07:43:09.453+0000: 2460: info : virNetDevTapCreate:240 :
> >> created device: 'vnet0'
> >> 2021-04-21 07:43:09.453+0000: 2460: debug :
> >> virNetDevSetMACInternal:287 : SIOCSIFHWADDR vnet0
> >> MAC=fe:bb:83:28:01:02 - Success
> >> 2021-04-21 07:43:09.453+0000: 2460: error : virNetDevBridgeAddPort:633
> >> : Unable to add bridge virbr1 port vnet0: Operation not supported
> >> 2021-04-21 07:43:09.466+0000: 2543: debug : udevHandleOneDevice:1695 :
> >> udev action: 'add': /sys/devices/virtual/net/vnet0
> >>
> >> Christian
> >>
> >
> > For reference:
> >
> > ae1ea84b33dab45c7b6c1754231ebda5959b504c is the first bad commit
> > commit ae1ea84b33dab45c7b6c1754231ebda5959b504c
> > Author: Florian Fainelli <f.fainelli@gmail.com>
> > Date: Wed Apr 14 22:22:57 2021 +0300
> >
> > net: bridge: propagate error code and extack from br_mc_disabled_update
> > Some Ethernet switches might only be able to support disabling
> > multicast
> > snooping globally, which is an issue for example when several bridges
> > span the same physical device and request contradictory settings.
> > Propagate the return value of br_mc_disabled_update() such that this
> > limitation is transmitted correctly to user-space.
> > Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
> > Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
> > Signed-off-by: David S. Miller <davem@davemloft.net>
> >
> > net/bridge/br_multicast.c | 28 +++++++++++++++++++++-------
> > net/bridge/br_netlink.c | 4 +++-
> > net/bridge/br_private.h | 3 ++-
> > net/bridge/br_sysfs_br.c | 8 +-------
> > 4 files changed, 27 insertions(+), 16 deletions(-)
> >
> > not sure if it matters this is on s390.
> > A simple reproducer is virt-install, e.g.
> > virt-install --name test --disk size=12 --memory=2048 --vcpus=2
> > --location
> > http://ports.ubuntu.com/ubuntu-ports/dists/bionic/main/installer-s390x/
>
> Thanks, I will kick off a reproducer and let you know.
> --
> Florian
Hey, you guys are moving fast, faster than it took me to open my email client...
Sorry for the breakage, Christian, I've just sent a patch with what I
think is wrong, could you give it a try?
Thanks!
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: net: bridge: propagate error code and extack from br_mc_disabled_update
2021-04-21 18:46 ` Vladimir Oltean
@ 2021-04-21 18:54 ` Christian Borntraeger
0 siblings, 0 replies; 4+ messages in thread
From: Christian Borntraeger @ 2021-04-21 18:54 UTC (permalink / raw)
To: Vladimir Oltean, Florian Fainelli
Cc: andrew, davem, idosch, jiri, kuba, netdev, nikolay, roopa,
vladimir.oltean, linux-next, kvm list, linux-s390
On 21.04.21 20:46, Vladimir Oltean wrote:
> On Wed, Apr 21, 2021 at 11:37:25AM -0700, Florian Fainelli wrote:
>> On 4/21/2021 11:35 AM, Christian Borntraeger wrote:
>>> On 21.04.21 20:18, Christian Borntraeger wrote:
>>>> Whatever version landed in next, according to bisect this broke
>>>> libvirt/kvms use of bridges:
>>>>
>>>>
>>>> # virsh start s31128001
>>>> error: Failed to start domain 's31128001'
>>>> error: Unable to add bridge virbr1 port vnet0: Operation not supported
>>>>
>>>> # grep vnet0 /var/log/libvirt/libvirtd.log
>>>>
>>>> 2021-04-21 07:43:09.453+0000: 2460: info : virNetDevTapCreate:240 :
>>>> created device: 'vnet0'
>>>> 2021-04-21 07:43:09.453+0000: 2460: debug :
>>>> virNetDevSetMACInternal:287 : SIOCSIFHWADDR vnet0
>>>> MAC=fe:bb:83:28:01:02 - Success
>>>> 2021-04-21 07:43:09.453+0000: 2460: error : virNetDevBridgeAddPort:633
>>>> : Unable to add bridge virbr1 port vnet0: Operation not supported
>>>> 2021-04-21 07:43:09.466+0000: 2543: debug : udevHandleOneDevice:1695 :
>>>> udev action: 'add': /sys/devices/virtual/net/vnet0
>>>>
>>>> Christian
>>>>
>>>
>>> For reference:
>>>
>>> ae1ea84b33dab45c7b6c1754231ebda5959b504c is the first bad commit
>>> commit ae1ea84b33dab45c7b6c1754231ebda5959b504c
>>> Author: Florian Fainelli <f.fainelli@gmail.com>
>>> Date: Wed Apr 14 22:22:57 2021 +0300
>>>
>>> net: bridge: propagate error code and extack from br_mc_disabled_update
>>> Some Ethernet switches might only be able to support disabling
>>> multicast
>>> snooping globally, which is an issue for example when several bridges
>>> span the same physical device and request contradictory settings.
>>> Propagate the return value of br_mc_disabled_update() such that this
>>> limitation is transmitted correctly to user-space.
>>> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
>>> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
>>> Signed-off-by: David S. Miller <davem@davemloft.net>
>>>
>>> net/bridge/br_multicast.c | 28 +++++++++++++++++++++-------
>>> net/bridge/br_netlink.c | 4 +++-
>>> net/bridge/br_private.h | 3 ++-
>>> net/bridge/br_sysfs_br.c | 8 +-------
>>> 4 files changed, 27 insertions(+), 16 deletions(-)
>>>
>>> not sure if it matters this is on s390.
>>> A simple reproducer is virt-install, e.g.
>>> virt-install --name test --disk size=12 --memory=2048 --vcpus=2
>>> --location
>>> http://ports.ubuntu.com/ubuntu-ports/dists/bionic/main/installer-s390x/
>>
>> Thanks, I will kick off a reproducer and let you know.
>> --
>> Florian
>
> Hey, you guys are moving fast, faster than it took me to open my email client...
>
> Sorry for the breakage, Christian, I've just sent a patch with what I
> think is wrong, could you give it a try?
Yes, this fixes the issue. I answered on the patch.
^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <20210414192257.1954575-1-olteanv@gmail.com>
[not found] ` <20210421181808.5210-1-borntraeger@de.ibm.com>
2021-04-21 18:35 ` net: bridge: propagate error code and extack from br_mc_disabled_update Christian Borntraeger
2021-04-21 18:37 ` Florian Fainelli
2021-04-21 18:46 ` Vladimir Oltean
2021-04-21 18:54 ` Christian Borntraeger
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