On 12/03/2012 05:47 PM, Michael S. Tsirkin wrote:
On Mon, Dec 03, 2012 at 02:05:27PM +0800, Jason Wang wrote:
On Monday, December 03, 2012 12:34:08 PM Rusty Russell wrote:
Jason Wang jasow...@redhat.com writes:
+static const struct ethtool_ops virtnet_ethtool_ops;
+
+/*
+ * Converting
On 12/03/2012 06:14 PM, Michael S. Tsirkin wrote:
On Tue, Nov 27, 2012 at 06:15:59PM +0800, Jason Wang wrote:
- if (!try_fill_recv(vi-rq, GFP_KERNEL))
- schedule_delayed_work(vi-rq.refill, 0);
+ for (i = 0; i vi-max_queue_pairs; i++)
+ if (!try_fill_recv(vi-rq[i
On Sunday, December 02, 2012 06:06:31 PM Michael S. Tsirkin wrote:
On Tue, Nov 27, 2012 at 06:15:59PM +0800, Jason Wang wrote:
This addes multiqueue support to virtio_net driver. In multiple queue
modes, the driver expects the number of queue paris is equal to the
number of vcpus
On Monday, December 03, 2012 12:34:08 PM Rusty Russell wrote:
Jason Wang jasow...@redhat.com writes:
+static const struct ethtool_ops virtnet_ethtool_ops;
+
+/*
+ * Converting between virtqueue no. and kernel tx/rx queue no.
+ * 0:rx0 1:tx0 2:cvq 3:rx1 4:tx1 ... 2N+1:rxN 2N+2:txN
On Sunday, December 02, 2012 06:09:06 PM Michael S. Tsirkin wrote:
On Tue, Nov 27, 2012 at 06:16:00PM +0800, Jason Wang wrote:
This patch implement the {set|get}_channels method of ethool to allow user
to change the number of queues dymaically when the device is running.
This would let
://lwn.net/Articles/505388/
- V4: https://lkml.org/lkml/2012/6/25/120
- V2: http://lwn.net/Articles/467283/
Perf Numbers:
Will do some basic test and post as a reply to this mail.
Jason Wang (3):
virtio-net: separate fields of sending/receiving queue from
virtnet_info
virtio_net: multiqueue
...@in.ibm.com
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c | 289 +-
1 files changed, 158 insertions(+), 131 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 26c502e..7975133 100644
processor id.
- smp affinity hint were set to the vcpu that owns the queue pairs.
Signed-off-by: Krishna Kumar krkum...@in.ibm.com
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c| 454 ++-
include/uapi/linux/virtio_net.h
This patch implement the {set|get}_channels method of ethool to allow user to
change the number of queues dymaically when the device is running. This would
let the user to configure it on demand.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c | 41
On 11/22/2012 10:46 PM, Michael S. Tsirkin wrote:
Add RFS support to virtio network device.
Add a new feature flag VIRTIO_NET_F_RFS for this feature, a new
configuration field max_virtqueue_pairs to detect supported number of
virtqueues as well as a new command VIRTIO_NET_CTRL_RFS to program
On 11/05/2012 07:16 AM, Rusty Russell wrote:
Jason Wang jasow...@redhat.com writes:
This addes multiqueue support to virtio_net driver. There's two mode supported:
single queue pair mode and multiple queue pairs mode. An obvious
difference compared with a physical mq card is that virtio-net
On 11/05/2012 07:46 AM, Rusty Russell wrote:
Jason Wang jasow...@redhat.com writes:
This patch implement the {set|get}_channels method of ethool to allow user to
change the number of queues dymaically when the device is running. This would
let the user to tune the device for specific
On 11/05/2012 09:08 AM, Rusty Russell wrote:
Jason Wang jasow...@redhat.com writes:
+struct virtnet_info {
+ u16 num_queue_pairs;/* # of RX/TX vq pairs */
+ u16 total_queue_pairs;
+
+ struct send_queue *sq;
+ struct receive_queue *rq;
+ struct virtqueue
On 10/31/2012 03:05 AM, Rick Jones wrote:
On 10/30/2012 03:03 AM, Jason Wang wrote:
Hi 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
From: Krishna Kumar krkum...@in.ibm.com
Introduce VIRTIO_NET_F_MULTIQUEUE.
Signed-off-by: Krishna Kumar krkum...@in.ibm.com
Signed-off-by: Jason Wang jasow...@redhat.com
---
include/uapi/linux/virtio_net.h |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/include/uapi
from the same flow, driver
would let the device (usually tuntap) to use the 'rx follows tx' packet steering
rules when working in multiqueue mode. In this mode, the device would select the
rxq based on the last queue where the packet of the flow were sent.
Signed-off-by: Jason Wang jasow
This patch implement the {set|get}_channels method of ethool to allow user to
change the number of queues dymaically when the device is running. This would
let the user to tune the device for specific applications.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c | 43
On 09/10/2012 02:33 PM, Michael S. Tsirkin wrote:
On Mon, Sep 10, 2012 at 09:27:38AM +0300, Michael S. Tsirkin wrote:
On Mon, Sep 10, 2012 at 09:16:29AM +0300, Michael S. Tsirkin wrote:
On Mon, Sep 10, 2012 at 11:42:25AM +0930, Rusty Russell wrote:
OK, I read the spec (pasted below for easy
On 09/03/2012 07:55 PM, Michael S. Tsirkin wrote:
At Jason's request, I am trying to help finalize the spec for
the new multiqueue feature.
Changes from Jason's rfc:
- reserved vq 3: this makes all rx vqs even and tx vqs odd, which
looks nicer to me.
- documented packet steering, added a
On 08/28/2012 07:54 PM, Paolo Bonzini wrote:
From: Jason Wangjasow...@redhat.com
Instead of storing the queue index in transport-specific virtio structs,
this patch moves them to vring_virtqueue and introduces an helper to get
the value. This lets drivers simplify their management and tracing
On 07/29/2012 05:44 PM, Michael S. Tsirkin wrote:
On Sat, Jul 21, 2012 at 02:02:58PM +0200, Sasha Levin wrote:
On 07/20/2012 03:40 PM, Michael S. Tsirkin wrote:
- err = init_vqs(vi);
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ))
+ vi-has_cvq = true;
+
How
On 07/23/2012 05:28 PM, Sasha Levin wrote:
On 07/23/2012 07:54 AM, Jason Wang wrote:
On 07/21/2012 08:02 PM, Sasha Levin wrote:
On 07/20/2012 03:40 PM, Michael S. Tsirkin wrote:
-err = init_vqs(vi);
+if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ))
+vi-has_cvq = true
On 07/26/2012 04:20 PM, Paolo Bonzini wrote:
Il 05/07/2012 13:40, Sasha Levin ha scritto:
@@ -275,7 +274,7 @@ static void vm_del_vq(struct virtqueue *vq)
vring_del_virtqueue(vq);
/* Select and deactivate the queue */
- writel(info-queue_index, vm_dev-base +
On 07/29/2012 05:50 PM, Michael S. Tsirkin wrote:
On Mon, Jul 23, 2012 at 01:48:35PM +0800, Jason Wang wrote:
+ }
- if (virtio_has_feature(vi-vdev, VIRTIO_NET_F_CTRL_VQ)) {
+ ret = vi-vdev-config-find_vqs(vi-vdev, total_vqs, vqs, callbacks
On 07/20/2012 08:33 PM, Michael S. Tsirkin wrote:
On Thu, Jul 05, 2012 at 06:29:54PM +0800, Jason Wang wrote:
This patch let the virtio_net driver can negotiate the number of queues it
wishes to use through control virtqueue and export an ethtool interface to let
use tweak it.
As current
On 07/20/2012 09:40 PM, Michael S. Tsirkin wrote:
On Thu, Jul 05, 2012 at 06:29:53PM +0800, Jason Wang wrote:
This patch converts virtio_net to a multi queue device. After negotiated
VIRTIO_NET_F_MULTIQUEUE feature, the virtio device has many tx/rx queue pairs,
and driver could read the number
On 07/21/2012 08:02 PM, Sasha Levin wrote:
On 07/20/2012 03:40 PM, Michael S. Tsirkin wrote:
- err = init_vqs(vi);
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ))
+ vi-has_cvq = true;
+
How about we disable multiqueue if there's no cvq?
Will make logic a bit
On 07/07/2012 12:23 AM, Rick Jones wrote:
On 07/06/2012 12:42 AM, Jason Wang wrote:
I'm not expert of tcp, but looks like the changes are reasonable:
- we can do full-sized TSO check in tcp_tso_should_defer() only for
westwood, according to tcp westwood
- run tcp_tso_should_defer for tso_segs
On 07/06/2012 01:45 AM, Rick Jones wrote:
On 07/05/2012 03:29 AM, Jason Wang wrote:
Test result:
1) 1 vm 2 vcpu 1q vs 2q, 1 - 1q, 2 - 2q, no pinning
- Guest to External Host TCP STREAM
sessions size throughput1 throughput2 norm1 norm2
1 64 650.55 655.61 100% 24.88 24.86 99%
2 64 1446.81
On 07/06/2012 04:02 AM, Amos Kong wrote:
On 07/05/2012 06:29 PM, Jason Wang wrote:
This patch converts virtio_net to a multi queue device. After negotiated
VIRTIO_NET_F_MULTIQUEUE feature, the virtio device has many tx/rx queue pairs,
and driver could read the number from config space
On 07/06/2012 02:38 PM, Stephen Hemminger wrote:
On Fri, 06 Jul 2012 11:20:06 +0800
Jason Wangjasow...@redhat.com wrote:
On 07/05/2012 08:51 PM, Sasha Levin wrote:
On Thu, 2012-07-05 at 18:29 +0800, Jason Wang wrote:
@@ -1387,6 +1404,10 @@ static int virtnet_probe(struct virtio_device *vdev
guest notifiers assignment/de-assignment
- changes the command lines to:
qemu -netdev tap,queues=2 -device virtio-net-pci,queues=2
References:
- V2 http://www.spinics.net/lists/kvm/msg74588.html
- V1 http://comments.gmane.org/gmane.comp.emulators.qemu/100481
Jason Wang (5):
option: introduce
-by: Jason Wang jasow...@redhat.com
---
qemu-option.c | 19 +++
qemu-option.h |2 ++
2 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/qemu-option.c b/qemu-option.c
index bb3886c..9263125 100644
--- a/qemu-option.c
+++ b/qemu-option.c
@@ -545,6 +545,25 @@ static QemuOpt
- increase and decrease the number of queues by introducing helpter to attach or
detach a file descriptor to the device
Then qemu can use this as the infrastructures of emulating a multiple queue
capable network cards.
Signed-off-by: Jason Wang jasow...@redhat.com
---
net.c |4 +
net
from or sent
out. Virtio-net would be the first user.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/dp8393x.c |2 +-
hw/mcf_fec.c |2 +-
hw/qdev-properties.c | 34 +
hw/qdev.h|3 +-
net.c| 79
, this is
done by introducing an vq_index filed in vhost_dev struct to record the index of
first virtuque that is used by the vhost devs. Then vhost could simply convert
it to the local vhost queue index and issue ioctls.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/vhost.c | 53
,netdev=hn0,queues=2
To let user tweak the performance, guest could negotiate the num of queues it
wishes to use through control virtqueue.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/virtio-net.c | 505 ++-
hw/virtio-net.h | 12 ++
2
103856.79 171% 1055.21 1245.17 118%
Jason Wang (4):
virtio_ring: move queue_index to vring_virtqueue
virtio: intorduce an API to set affinity for a virtqueue
virtio_net: multiqueue support
virtio_net: support negotiating the number of queues through ctrl vq
Krishna Kumar (1):
virtio_net
From: Krishna Kumar krkum...@in.ibm.com
Introduce VIRTIO_NET_F_MULTIQUEUE.
Signed-off-by: Krishna Kumar krkum...@in.ibm.com
Signed-off-by: Jason Wang jasow...@redhat.com
---
include/linux/virtio_net.h |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/include/linux
Instead of storing the queue index in virtio infos, this patch moves them to
vring_virtqueue and introduces helpers to set and get the value. This would
simplify the management and tracing.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/virtio/virtio_mmio.c |5 +
drivers
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/virtio/virtio_pci.c | 46 +
include/linux/virtio_config.h | 21 ++
2 files changed, 67 insertions(+), 0 deletions(-)
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio
pairs.
Signed-off-by: Krishna Kumar krkum...@in.ibm.com
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c | 645 ++-
include/linux/virtio_net.h |2 +
2 files changed, 452 insertions(+), 195 deletions(-)
diff --git a/drivers/net
index).
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c | 171 ++-
include/linux/virtio_net.h |7 ++
2 files changed, 142 insertions(+), 36 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
On 07/05/2012 07:40 PM, Sasha Levin wrote:
On Thu, 2012-07-05 at 18:29 +0800, Jason Wang wrote:
Instead of storing the queue index in virtio infos, this patch moves them to
vring_virtqueue and introduces helpers to set and get the value. This would
simplify the management and tracing.
Signed
On 07/05/2012 08:51 PM, Sasha Levin wrote:
On Thu, 2012-07-05 at 18:29 +0800, Jason Wang wrote:
@@ -1387,6 +1404,10 @@ static int virtnet_probe(struct virtio_device *vdev)
if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ))
vi-has_cvq = true;
+ /* Use single tx
On 07/01/2012 05:43 PM, Michael S. Tsirkin wrote:
On Mon, Jun 25, 2012 at 06:04:49PM +0800, Jason Wang wrote:
This patch let the virtio-net can transmit and recevie packets through multiuple
VLANClientStates and abstract them as multiple virtqueues to guest. A new
parameter 'queues' were
On 06/26/2012 01:49 AM, Sridhar Samudrala wrote:
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
On 06/26/2012 02:01 AM, Shirley Ma wrote:
Hello Jason,
Good work. Do you have local guest to guest results?
Thanks
Shirley
Hi Shirley:
I would run tests to measure the performance and post here.
Thanks
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To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message
From: Krishna Kumar krkum...@in.ibm.com
Introduce VIRTIO_NET_F_MULTIQUEUE.
Signed-off-by: Krishna Kumar krkum...@in.ibm.com
Signed-off-by: Jason Wang jasow...@redhat.com
---
include/linux/virtio_net.h |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/include/linux
Instead of storing the queue index in virtio infos, this patch moves them to
vring_virtqueue and introduces helpers to set and get the value. This would
simplify the management and tracing.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/virtio/virtio_mmio.c |5 +
drivers
9374.67 138% 214.50 160.25 74%
Changes from V3:
- Rebase to the net-next
- Let queue 2 to be the control virtqueue to obey the spec
- Prodives irq affinity
- Choose txq based on processor id
References:
- V3: http://lwn.net/Articles/467283/
---
Jason Wang (3):
virtio_ring: move
.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/lguest/lguest_device.c |8
drivers/s390/kvm/kvm_virtio.c |6 ++
drivers/virtio/virtio_mmio.c |8
drivers/virtio/virtio_pci.c| 12
include/linux/virtio_config.h |4
5 files
:
- Txq selection is based on the processor id in order to avoid contending a lock
whose owner may exits to host.
- Since the txq/txq were per-cpu, affinity hint were set to the cpu that owns
the queue pairs.
Signed-off-by: Krishna Kumar krkum...@in.ibm.com
Signed-off-by: Jason Wang jasow
review and comments.
---
Jason Wang (4):
option: introduce qemu_get_opt_all()
tap: multiqueue support
net: multiqueue support
virtio-net: add multiqueue support
hw/dp8393x.c |2
hw/mcf_fec.c |2
hw/qdev-properties.c | 33 +++-
hw/qdev.h
-by: Jason Wang jasow...@redhat.com
---
qemu-option.c | 19 +++
qemu-option.h |2 ++
2 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/qemu-option.c b/qemu-option.c
index bb3886c..9263125 100644
--- a/qemu-option.c
+++ b/qemu-option.c
@@ -545,6 +545,25 @@ static QemuOpt
and detach
file. Platform-specific helpers were called and only linux helper has its
content as multiqueue tap were only supported in linux.
Signed-off-by: Jason Wang jasow...@redhat.com
---
net.c |4 +
net/tap-aix.c | 13 +++-
net/tap-bsd.c | 13 +++-
net/tap-haiku.c | 13
from or sent
out. Virtio-net would be the first user.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/dp8393x.c |2 +-
hw/mcf_fec.c |2 +-
hw/qdev-properties.c | 33 +++-
hw/qdev.h|3 ++-
net.c| 58
be used without
changes in vhost code. So each vhost_net structure were used to track a single
VLANClientState and two virtqueues in the past. As multiple VLANClientState were
stored in the NICState, we can infer the correspond VLANClientState from this
and queue_index easily.
Signed-off-by: Jason Wang
On 06/25/2012 06:14 PM, Michael S. Tsirkin wrote:
On Mon, Jun 25, 2012 at 05:41:17PM +0800, Jason Wang wrote:
Device specific irq optimizations such as irq affinity may be used by virtio
drivers. So this patch introduce a new method to get the irq of a specific
virtqueue.
After this patch
specific tracepoints?
---
Jason Wang (2):
vhost: basic tracepoints
tools: virtio: add a top-like utility for displaying vhost satistics
drivers/vhost/trace.h | 153
drivers/vhost/vhost.c | 17 ++
tools/virtio/vhost_stat | 360
To help for the performance optimizations and debugging, this patch tracepoints
for vhost. Pay attention that the tracepoints are only for vhost, net code are
not touched.
Two kinds of activities were traced: virtio and vhost work.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/vhost
4 0
Signed-off-by: Jason Wang jasow...@redhat.com
---
tools/virtio/vhost_stat | 360 +++
1 files changed, 360 insertions(+), 0 deletions(-)
create mode 100755 tools/virtio/vhost_stat
diff --git a/tools/virtio/vhost_stat b/tools/virtio
On 04/04/2012 05:32 PM, Michael S. Tsirkin wrote:
On Thu, Dec 29, 2011 at 09:12:38PM +1030, Rusty Russell wrote:
Michael S. Tsirkin noticed that we could run the refill work after
ndo_close, which can re-enable napi - we don't disable it until
virtnet_remove. This is clearly wrong, so
Hi:
Thanks for the work and it looks very reasonable, some questions below.
On 03/23/2012 07:48 AM, Shirley Ma wrote:
Sorry for being late to submit this patch. I have spent lots of time
trying to find the best approach. This effort is still going on...
This patch is built against net-next
in case it may
register one very soon and for guest who has a bad irq detection routine ( such
as note_interrupt() in linux ), this bad irq would be recognized soon as in the
past.
Signed-off-by: Jason Wang jasow...@redhat.com
---
virt/kvm/ioapic.c | 47
On 03/12/2012 05:23 PM, Gleb Natapov wrote:
On Mon, Mar 12, 2012 at 05:07:35PM +0800, Jason Wang wrote:
Currently, we call ioapic_service() immediately when we find the irq is still
active during eoi broadcast. But for real hardware, there's some dealy
between
the EOI writing and irq
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/virtio/virtio_ring.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 79e1b29..78428a8 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers
Use virtio_mb() to make sure the available index to be exposed before
checking the the avail event. Otherwise we may get stale value of
avail event in guest and never kick the host after.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/virtio/virtio_ring.c |6 +++---
1 files
On 12/08/2011 01:02 AM, Ben Hutchings wrote:
On Wed, 2011-12-07 at 19:31 +0800, Jason Wang wrote:
On 12/07/2011 03:30 PM, Rusty Russell wrote:
On Mon, 05 Dec 2011 16:58:37 +0800, Jason Wangjasow...@redhat.com wrote:
multiple queue virtio-net: flow steering through host/guest cooperation
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 Wangjasow...@redhat.com wrote:
On 12/06/2011 05:18 PM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 6:33 AM, Jason Wangjasow...@redhat.com
wrote:
On
On 12/07/2011 07:10 AM, Sridhar Samudrala wrote:
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 Wangjasow...@redhat.com
wrote:
On
On 12/07/2011 03:30 PM, Rusty Russell wrote:
On Mon, 05 Dec 2011 16:58:37 +0800, Jason Wangjasow...@redhat.com wrote:
multiple queue virtio-net: flow steering through host/guest cooperation
Hello all:
This is a rough series adds the guest/host cooperation of flow
steering support based on
On 12/07/2011 05:08 PM, Stefan Hajnoczi wrote:
[...]
Consider the complexity of the host nic each with their own steering
features, this series make the first step with minimal effort to try to let
guest driver and host tap/macvtap co-operate like what physical nic does.
There may be
On 12/06/2011 05:18 PM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 6:33 AM, Jason Wangjasow...@redhat.com wrote:
On 12/05/2011 06:55 PM, Stefan Hajnoczi wrote:
On Mon, Dec 5, 2011 at 8:59 AM, Jason Wangjasow...@redhat.comwrote:
+static int virtnet_set_fd(struct net_device *dev, u32
On 12/06/2011 09:15 PM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 10:21 AM, Jason Wangjasow...@redhat.com wrote:
On 12/06/2011 05:18 PM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 6:33 AM, Jason Wangjasow...@redhat.comwrote:
On 12/05/2011 06:55 PM, Stefan Hajnoczi wrote:
On Mon,
:
- An alternative idea instead of shared page is ctrl vq, the reason
that a shared table is preferable is the delay of ctrl vq itself.
- Optimization on irq affinity and tx queue selection
Comments are welcomed, thanks!
---
Jason Wang (5):
virtio_net: passing rxhash through vnet_hdr
tuntap
This patch enables the ability to pass the rxhash value to guest
through vnet_hdr. This is useful for guest when it wants to cooperate
with virtual device to steer a flow to dedicated guest cpu.
This feature is negotiated through VIRTIO_NET_F_GUEST_RXHASH.
Signed-off-by: Jason Wang jasow
set through a new kind of ioctl - TUNSETFD and
were pinned until device exit or another new page were specified.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/tun.c | 63
include/linux/if_tun.h | 10
2 files
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/macvlan.c |4
drivers/net/macvtap.c | 36 ++--
include/linux/if_macvlan.h |1 +
3 files changed, 39 insertions(+), 2 deletions(-)
diff --git a/drivers/net/macvlan.c b/drivers
Device specific irq configuration may be need in order to do some
optimization. So a new configuration is needed to get the irq of a
virtqueue.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/lguest/lguest_device.c |8
drivers/s390/kvm/kvm_virtio.c |6 ++
drivers
use the guest scheduler to
balance the load of TX and reduce the lock contention on egress path,
so the processor_id() were used to tx queue selection.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c | 165 +++-
include/linux
On 12/05/2011 06:55 PM, Stefan Hajnoczi wrote:
On Mon, Dec 5, 2011 at 8:59 AM, Jason Wangjasow...@redhat.com wrote:
+static int virtnet_set_fd(struct net_device *dev, u32 pfn)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct virtio_device *vdev = vi-vdev;
+
+ if
On 12/06/2011 04:09 AM, Ben Hutchings wrote:
On Mon, 2011-12-05 at 16:58 +0800, Jason Wang wrote:
This patch adds a simple flow director to tun/tap device. It is just a
page that contains the hash to queue mapping which could be changed by
user-space. The backend (tap/macvtap) would query
On 12/06/2011 04:42 AM, Ben Hutchings wrote:
On Mon, 2011-12-05 at 16:59 +0800, Jason Wang wrote:
In order to let the packets of a flow to be passed to the desired
guest cpu, we can co-operate with devices through programming the flow
director which was just a hash to queue table.
This kinds
On 11/16/2011 05:09 PM, Krishna Kumar2 wrote:
jason wang jasow...@redhat.com wrote on 11/16/2011 11:40:45 AM:
Hi Jason,
Have any thought in mind to solve the issue of flow handling?
So far nothing concrete.
Maybe some performance numbers first is better, it would let us know
where we
On 11/15/2011 12:44 PM, Krishna Kumar2 wrote:
Sasha Levin levinsasha...@gmail.com wrote on 11/14/2011 03:45:40 PM:
Why both the bandwidth and latency performance are dropping so
dramatically with multiple VQ?
It looks like theres no hash sync between host and guest, which makes
the RX VQ
the unused patch of function export.
- Typos and other comments from Stefan Hajnoczi.
- Disable guest announce for compat machine types.
---
Jason Wang (4):
announce self after vm start
net: model specific announcing support
virtio-net: notify guest to annouce itself
virtio-net
gratuitous packet by guest may change the
state of device, so we need to do it after vm is started.
Signed-off-by: Jason Wang jasow...@redhat.com
---
gdbstub.c |2 +-
migration.c |4 ++--
monitor.c |4 ++--
savevm.c|2 +-
sysemu.h|2 +-
vl.c|7 +--
6
This patch introduces a function pointer in NetClientInfo which is
called during self announcement to do the model specific announcing.
The first user would be virtio-net.
Signed-off-by: Jason Wang jasow...@redhat.com
---
net.h|2 ++
savevm.c |8 +---
2 files changed, 7
link through config update interrupt. When gust have
done the annoucement, it should clear that bit.
The feature is negotiated by bit VIRTIO_NET_F_ANNOUNCE.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/virtio-net.c | 18 +-
hw/virtio-net.h |3 +++
2 files changed
Disable guest announce for compat machine types.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/pc_piix.c | 16
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 8c7f2b7..6ca50a6 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
would be scheduled to send gratuitous
packet through NETDEV_NOTIFY_PEERS.
This feature is negotiated through bit VIRTIO_NET_F_GUEST_ANNOUNCE.
Changes from v2:
- Fix the race between unregister_dev() and workqueue
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c
. When
guest notice this, it should clear it and send the gratuitous packet.
Signed-off-by: Jason Wang jasow...@redhat.com
---
virtio-spec.lyx | 45 -
1 files changed, 44 insertions(+), 1 deletions(-)
diff --git a/virtio-spec.lyx b/virtio-spec.lyx
index
On 10/27/2011 09:32 AM, Rusty Russell wrote:
On Wed, 26 Oct 2011 16:49:12 +0800, Jason Wang jasow...@redhat.com wrote:
Network connections in guest need to be kept after migration. This is done by
sending gratuitous packet and let switch learn new port of the mac
address. As hypervisor does
On 10/25/2011 11:41 PM, Michael S. Tsirkin wrote:
On Tue, Oct 25, 2011 at 10:50:41AM +0800, Jason Wang wrote:
On 10/24/2011 01:25 PM, Michael S. Tsirkin wrote:
On Mon, Oct 24, 2011 at 02:54:59PM +1030, Rusty Russell wrote:
On Sat, 22 Oct 2011 13:43:11 +0800, Jason Wang jasow...@redhat.com
On 10/24/2011 01:25 PM, Michael S. Tsirkin wrote:
On Mon, Oct 24, 2011 at 02:54:59PM +1030, Rusty Russell wrote:
On Sat, 22 Oct 2011 13:43:11 +0800, Jason Wang jasow...@redhat.com wrote:
This make let virtio-net driver can send gratituous packet by a new
config bit - VIRTIO_NET_S_ANNOUNCE
add a
model specific fucntion which can let nic model to implement its own
announce function and then implement a virtio-net specific function to
let guest send the gratitous packet.
Only basic test were done.
Comments are welcomed.
Thanks
---
Jason Wang (4):
announce self after vm start
entry may not existed because of
aging. This patch solve this by call qemu_announce_self() in
vm_start() instead of in process_incoming_migration(). Through this,
gratituous packets were sent each time when vm starts.
Signed-off-by: Jason Wang jasow...@redhat.com
---
migration.c |1 -
vl.c
Export and move announce_self_create() to net.c in order to be used by model
specific announcing function.
Signed-off-by: Jason Wang jasow...@redhat.com
---
net.c| 31 +++
net.h|1 +
savevm.c | 32
3 files changed, 32
-by: Jason Wang jasow...@redhat.com
---
net.h|2 ++
savevm.c |8 +---
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/net.h b/net.h
index 4943d4b..1845f01 100644
--- a/net.h
+++ b/net.h
@@ -46,6 +46,7 @@ typedef ssize_t (NetReceive)(VLANClientState *, const uint8_t
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