lso enables hypervisor controlled live migration of a VM with
direct attached VF by failing over to the paravirtual datapath when the VF
is unplugged.
Signed-off-by: Sridhar Samudrala
---
Documentation/networking/net_failover.rst | 26 +
MAINTAINERS
same mac address as the failover netdev.
This enables paravirtual drivers to use a VF as an accelerated low latency
datapath. It also allows migration of VMs with direct attached VFs by
failing over to the paravirtual datapath when the VF is unplugged.
Signed-off-by: Sridhar Samudrala
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a standby for another device with the same MAC address.
VIRTIO_NET_F_STANDBY is defined as bit 62 as it is a device feature bit.
Signed-off-by: Sridhar Samudrala
---
drivers/net/virtio_net.c| 2
Use the registration/notification framework supported by the generic
failover infrastructure.
Signed-off-by: Sridhar Samudrala
---
drivers/net/hyperv/Kconfig | 1 +
drivers/net/hyperv/hyperv_net.h | 2 +
drivers/net/hyperv/netvsc_drv.c | 222 +++-
3
24231&w=2
Signed-off-by: Sridhar Samudrala
---
Documentation/networking/net_failover.rst | 90 +++
drivers/net/Kconfig | 1 +
drivers/net/virtio_net.c | 38 -
3 files changed, 128 insertions(+), 1 deletion(-)
.
v2 RFC:
- Changed VIRTIO_NET_F_MASTER to VIRTIO_NET_F_BACKUP (mst)
- made a small change to the virtio-net xmit path to only use VF datapath
for unicasts. Broadcasts/multicasts use virtio datapath. This avoids
east-west broadcasts to go over the PCI link.
- added suppport for the feature bi
24231&w=2
Signed-off-by: Sridhar Samudrala
---
Documentation/networking/net_failover.rst | 90 +++
drivers/net/Kconfig | 1 +
drivers/net/virtio_net.c | 38 -
3 files changed, 128 insertions(+), 1 deletion(-)
t also enables hypervisor controlled live migration of a VM with
direct attached VF by failing over to the paravirtual datapath when the VF
is unplugged.
Signed-off-by: Sridhar Samudrala
---
Documentation/networking/net_failover.rst | 26 +
MAINTAINERS
Use the registration/notification framework supported by the generic
failover infrastructure.
Signed-off-by: Sridhar Samudrala
---
drivers/net/hyperv/Kconfig | 1 +
drivers/net/hyperv/hyperv_net.h | 2 +
drivers/net/hyperv/netvsc_drv.c | 133 +++-
3
same mac address as the failover netdev.
This enables paravirtual drivers to use a VF as an accelerated low latency
datapath. It also allows migration of VMs with direct attached VFs by
failing over to the paravirtual datapath when the VF is unplugged.
Signed-off-by: Sridhar Samudrala
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a standby for another device with the same MAC address.
VIRTIO_NET_F_STANDBY is defined as bit 62 as it is a device feature bit.
Signed-off-by: Sridhar Samudrala
---
drivers/net/virtio_net.c| 2
nly use virtio as
backup path when VF is unplugged.
v2 RFC:
- Changed VIRTIO_NET_F_MASTER to VIRTIO_NET_F_BACKUP (mst)
- made a small change to the virtio-net xmit path to only use VF datapath
for unicasts. Broadcasts/multicasts use virtio datapath. This avoids
east-west broadcasts to go over
ay to pass the newly added feature bit 'standby' to qemu via libvirt
XML file?
Signed-off-by: Sridhar Samudrala
---
hw/net/virtio-net.c | 2 ++
include/standard-headers/linux/virtio_net.h | 3 +++
2 files changed, 5 insertions(+)
diff --git a/hw/net/virtio-net.c b
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a standby for another device with the same MAC address.
VIRTIO_NET_F_STANDBY is defined as bit 62 as it is a device feature bit.
Signed-off-by: Sridhar Samudrala
---
drivers/net/virtio_net.c| 2
posed 2 netdev model to avoid these issues.
- Removed broadcast/multicast optimization and only use virtio as
backup path when VF is unplugged.
v2 RFC:
- Changed VIRTIO_NET_F_MASTER to VIRTIO_NET_F_BACKUP (mst)
- made a small change to the virtio-net xmit path to only use VF datapath
for
netdev in this model. A passthru/vf device
with the same MAC gets registered as 'primary' netdev.
net_failover_register()
net_failover_unregister()
Signed-off-by: Sridhar Samudrala
---
MAINTAINERS|7 +
include/linux/netdevice.h | 16 +
include/net/net_failover.h
netdev
is marked as 'standby' netdev and a passthru device with the same MAC is
registered as 'primary' netdev.
This patch is based on the discussion initiated by Jesse on this thread.
https://marc.info/?l=linux-virtualization&m=151189725224231&w=2
Signed-off-by: Sri
Use the registration/notification framework supported by the generic
failover infrastructure.
Signed-off-by: Sridhar Samudrala
---
drivers/net/hyperv/Kconfig | 1 +
drivers/net/hyperv/hyperv_net.h | 2 +
drivers/net/hyperv/netvsc_drv.c | 134 +++-
3
netdev in this model. A passthru/vf device
with the same MAC gets registered as 'primary' netdev.
net_failover_register()
net_failover_unregister()
Signed-off-by: Sridhar Samudrala
---
include/linux/netdevice.h | 16 +
include/net/net_failover.h | 62
Use the registration/notification framework supported by the generic
failover infrastructure.
Signed-off-by: Sridhar Samudrala
---
drivers/net/hyperv/Kconfig | 1 +
drivers/net/hyperv/hyperv_net.h | 2 +
drivers/net/hyperv/netvsc_drv.c | 134 +++-
3
the same MAC is
registered as 'primary' netdev.
This patch is based on the discussion initiated by Jesse on this thread.
https://marc.info/?l=linux-virtualization&m=151189725224231&w=2
Signed-off-by: Sridhar Samudrala
---
drivers/net/Kconfig | 1
that model and proposed 2 netdev model to avoid these issues.
- Removed broadcast/multicast optimization and only use virtio as
backup path when VF is unplugged.
v2 RFC:
- Changed VIRTIO_NET_F_MASTER to VIRTIO_NET_F_BACKUP (mst)
- made a small change to the virtio-net xmit path to only use VF datapath
fo
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a standby for another device with the same MAC address.
VIRTIO_NET_F_STANDBY is defined as bit 62 as it is a device feature bit.
Signed-off-by: Sridhar Samudrala
---
drivers/net/virtio_net.c| 2
Use the registration/notification framework supported by the generic
failover infrastructure.
Signed-off-by: Sridhar Samudrala
---
drivers/net/hyperv/Kconfig | 1 +
drivers/net/hyperv/hyperv_net.h | 2 +
drivers/net/hyperv/netvsc_drv.c | 134 +++-
3
netdev in this model. A passthru/vf device
with the same MAC gets registered as 'primary' netdev.
net_failover_register()
net_failover_unregister()
Signed-off-by: Sridhar Samudrala
---
include/linux/netdevice.h | 16 +
include/net/net_failover.h | 94 +
es.
- Removed broadcast/multicast optimization and only use virtio as
backup path when VF is unplugged.
v2 RFC:
- Changed VIRTIO_NET_F_MASTER to VIRTIO_NET_F_BACKUP (mst)
- made a small change to the virtio-net xmit path to only use VF datapath
for unicasts. Broadcasts/multicasts use virtio da
the same MAC is
registered as 'primary' netdev.
This patch is based on the discussion initiated by Jesse on this thread.
https://marc.info/?l=linux-virtualization&m=151189725224231&w=2
Signed-off-by: Sridhar Samudrala
---
drivers/net/Kconfig | 1
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a standby for another device with the same MAC address.
VIRTIO_NET_F_STANDBY is defined as bit 62 as it is a device feature bit.
Signed-off-by: Sridhar Samudrala
---
drivers/net/virtio_net.c| 2
Use the registration/notification framework supported by the generic
failover infrastructure.
Signed-off-by: Sridhar Samudrala
---
drivers/net/hyperv/Kconfig | 1 +
drivers/net/hyperv/hyperv_net.h | 2 +
drivers/net/hyperv/netvsc_drv.c | 208 ++--
3
tions call failover_register()/failover_unregister() with the
master netdev created by the failover module.
Signed-off-by: Sridhar Samudrala
---
include/linux/netdevice.h | 16 +
include/net/failover.h| 96 ++
net/Kconfig | 18 +
net/core/Makefile | 1 +
net/core/
the same MAC is
registered as 'primary' netdev.
This patch is based on the discussion initiated by Jesse on this thread.
https://marc.info/?l=linux-virtualization&m=151189725224231&w=2
Signed-off-by: Sridhar Samudrala
---
drivers/net/Kconfig | 1
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a standby for another device with the same MAC address.
VIRTIO_NET_F_STANDBY is defined as bit 62 as it is a device feature bit.
Signed-off-by: Sridhar Samudrala
---
drivers/net/virtio_net.c| 2
CKUP (mst)
- made a small change to the virtio-net xmit path to only use VF datapath
for unicasts. Broadcasts/multicasts use virtio datapath. This avoids
east-west broadcasts to go over the PCI link.
- added suppport for the feature bit in qemu
Sridhar Samudrala (4):
virtio_net: Introduce VI
()
2. new virtio_net based solution that uses 3 netdev model. In this model,
the bypass module provides interfaces to create/destroy additional master
netdev and all the slave events are managed internally.
bypass_master_create()
bypass_master_destroy()
Signed-off-by: Sridhar Samudrala
s
registered as 'active' netdev.
This patch is based on the discussion initiated by Jesse on this thread.
https://marc.info/?l=linux-virtualization&m=151189725224231&w=2
Signed-off-by: Sridhar Samudrala
---
drivers/net/Kconfig | 1 +
drivers/net/virtio_net.c | 36
Use the registration/notification framework supported by the generic
bypass infrastructure.
Signed-off-by: Sridhar Samudrala
---
drivers/net/hyperv/Kconfig | 1 +
drivers/net/hyperv/hyperv_net.h | 2 +
drivers/net/hyperv/netvsc_drv.c | 208 ++--
3
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a backup for another device with the same MAC address.
VIRTIO_NET_F_BACKUP is defined as bit 62 as it is a device feature bit.
Signed-off-by: Sridhar Samudrala
---
drivers/net/virtio_net.c| 2 +-
include
nicasts. Broadcasts/multicasts use virtio datapath. This avoids
east-west broadcasts to go over the PCI link.
- added suppport for the feature bit in qemu
Sridhar Samudrala (4):
virtio_net: Introduce VIRTIO_NET_F_BACKUP feature bit
net: Introduce generic bypass module
virtio_net: Extend virt
Use the registration/notification framework supported by the generic
bypass infrastructure.
Signed-off-by: Sridhar Samudrala
---
drivers/net/hyperv/Kconfig | 1 +
drivers/net/hyperv/netvsc_drv.c | 219
2 files changed, 63 insertions(+), 157
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a backup for another device with the same MAC address.
VIRTIO_NET_F_BACKUP is defined as bit 62 as it is a device feature bit.
Signed-off-by: Sridhar Samudrala
---
drivers/net/virtio_net.c| 2 +-
include
ead.
https://marc.info/?l=linux-virtualization&m=151189725224231&w=2
Signed-off-by: Sridhar Samudrala
---
drivers/net/Kconfig | 1 +
drivers/net/virtio_net.c | 612 ++-
2 files changed, 612 insertions(+), 1 deletion(-)
diff --git a/
can use this module by registering a set of ops and
each instance of the device when it is probed.
Signed-off-by: Sridhar Samudrala
---
include/net/bypass.h | 80 ++
net/Kconfig | 18 +++
net/core/Makefile| 1 +
net/core/bypass.c| 406
Broadcasts/multicasts use virtio datapath. This avoids
east-west broadcasts to go over the PCI link.
- added suppport for the feature bit in qemu
Sridhar Samudrala (4):
virtio_net: Introduce VIRTIO_NET_F_BACKUP feature bit
net: Introduce generic bypass module
virtio_net: Extend
: Sridhar Samudrala
Reviewed-by: Alexander Duyck
---
drivers/net/virtio_net.c | 283 +--
1 file changed, 101 insertions(+), 182 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 14679806c1b1..c85b2949f151 100644
--- a
ead.
https://marc.info/?l=linux-virtualization&m=151189725224231&w=2
Signed-off-by: Sridhar Samudrala
Signed-off-by: Alexander Duyck
---
drivers/net/virtio_net.c | 639 ++-
1 file changed, 638 insertions(+), 1 deletion(-)
diff --git a/drive
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a backup for another device with the same MAC address.
VIRTIO_NET_F_BACKUP is defined as bit 62 as it is a device feature bit.
Signed-off-by: Sridhar Samudrala
---
drivers/net/virtio_net.c| 2 +-
include
n hypervisor sets the MAC filter
on the VF and plugs it back to the guest to switch over to VF datapath.
This patch is based on the discussion initiated by Jesse on this thread.
https://marc.info/?l=linux-virtualization&m=151189725224231&w=2
Sridhar Samudrala (3):
virtio_net: Introduce VI
24231&w=2
Signed-off-by: Sridhar Samudrala
Reviewed-by: Jesse Brandeburg
---
drivers/net/virtio_net.c | 307 ++-
1 file changed, 305 insertions(+), 2 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index f149a160a8c5.
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a backup for another device with the same MAC address.
Signed-off-by: Sridhar Samudrala
---
drivers/net/virtio_net.c| 2 +-
include/uapi/linux/virtio_net.h | 3 +++
2 files changed, 4 insertions(+), 1
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a backup for another device with the same MAC address.
Signed-off-by: Sridhar Samudrala
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index cd63659140..fa47e723b9 100644
--- a/hw/net/virtio-net.c
rtio-net xmit path to only use VF datapath
for unicasts. Broadcasts/multicasts use virtio datapath. This avoids
east-west broadcasts to go over the PCI link.
- added suppport for the feature bit in qemu
Sridhar Samudrala (2):
virtio_net: Introduce VIRTIO_NET_F_BACKUP feature bit
virtio_net
This feature bit can be used by hypervisor to indicate virtio_net device to
act as a master for a directly attached passthru device with the same MAC
address.
Signed-off-by: Sridhar Samudrala
---
drivers/net/virtio_net.c| 3 ++-
include/uapi/linux/virtio_net.h | 1 +
2 files changed, 3
datapath.
This patch is based on the discussion initiated by Jesse on this thread.
https://marc.info/?l=linux-virtualization&m=151189725224231&w=2
Signed-off-by: Sridhar Samudrala
Reviewed-by: Jesse Brandeburg
---
drivers/net/virtio_net.c | 305 ++-
mp;m=151189725224231&w=2
Sridhar Samudrala (2):
virtio_net: Introduce VIRTIO_NET_F_MASTER feature bit
virtio_net: Extend virtio to use VF datapath when available
drivers/net/virtio_net.c| 308 +++-
include/uapi/linux/virtio_net.h | 1 +
2 files
on the discussion initiated by Jesse on this thread.
https://marc.info/?l=linux-virtualization&m=151189725224231&w=2
Signed-off-by: Sridhar Samudrala
Reviewed-by: Jesse Brandeburg
---
drivers/net/virtio_net.c | 341 ++-
1 file changed, 339 in
On 6/25/2012 2:16 AM, Jason Wang wrote:
Hello All:
This series is an update version of multiqueue virtio-net driver based on
Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the
packets reception and transmission. Please review and comments.
Test Environment:
- Intel(R) Xe
On 12/7/2011 3:02 AM, Jason Wang wrote:
On 12/06/2011 11:42 PM, Sridhar Samudrala wrote:
On 12/6/2011 5:15 AM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 10:21 AM, Jason Wang
wrote:
On 12/06/2011 05:18 PM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 6:33 AM, Jason Wang
wrote:
On 12
On 12/6/2011 8:14 AM, Michael S. Tsirkin wrote:
On Tue, Dec 06, 2011 at 07:42:54AM -0800, Sridhar Samudrala wrote:
On 12/6/2011 5:15 AM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 10:21 AM, Jason Wang wrote:
On 12/06/2011 05:18 PM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 6:33 AM
On 12/6/2011 5:15 AM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 10:21 AM, Jason Wang wrote:
On 12/06/2011 05:18 PM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 6:33 AM, Jason Wangwrote:
On 12/05/2011 06:55 PM, Stefan Hajnoczi wrote:
On Mon, Dec 5, 2011 at 8:59 AM, Jason Wang
wrot
On Fri, 2011-08-12 at 09:54 +0800, Jason Wang wrote:
> As multi-queue nics were commonly used for high-end servers,
> current single queue based tap can not satisfy the
> requirement of scaling guest network performance as the
> numbers of vcpus increase. So the following series
> implements multip
On Thu, 2011-06-02 at 18:43 +0300, Michael S. Tsirkin wrote:
> Current code might introduce a lot of latency variation
> if there are many pending bufs at the time we
> attempt to transmit a new one. This is bad for
> real-time applications and can't be good for TCP either.
>
> Free up just enough
On Thu, 2010-07-15 at 15:19 +0300, Michael S. Tsirkin wrote:
> We flush under vq mutex when changing backends.
> This creates a deadlock as workqueue being flushed
> needs this lock as well.
>
> https://bugzilla.redhat.com/show_bug.cgi?id=612421
>
> Drop the vq mutex before flush: we have the dev
On Mon, 2010-06-28 at 13:08 +0300, Michael S. Tsirkin wrote:
> Userspace virtio server has the following hack
> so guests rely on it, and we have to replicate it, too:
>
> Use port number to detect incoming IPv4 DHCP response packets,
> and fill in the checksum for these.
>
> The issue we are sol
tead, let's return a negative error code and stop polling.
One minor comment on error return below. With that change,
Acked-by: Sridhar Samudrala
>
> Signed-off-by: Michael S. Tsirkin
> ---
>
> Dave, I'm sending this out so it can get reviewed.
> I'll put this
On Thu, 2010-06-10 at 18:20 +0300, Michael S. Tsirkin wrote:
> virtio net will never try to overflow the TX ring, so the only reason
> add_buf may fail is out of memory. Thus, we can not stop the
> device until some request completes - there's no guarantee anything
> at all is outstanding.
>
> Mak
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