...@in.ibm.com
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c | 271 +-
1 files changed, 149 insertions(+), 122 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 8262232..266f712 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| 472 ++-
include/uapi/linux/virtio_net.h
On Tuesday, December 04, 2012 03:24:22 PM Michael S. Tsirkin wrote:
I found some bugs, see below.
Also some style nitpicking, this is not mandatory to address.
Thanks for the reviewing.
On Tue, Dec 04, 2012 at 07:07:57PM +0800, Jason Wang wrote:
This addes multiqueue support to virtio_net
On Tuesday, December 04, 2012 03:49:59 PM Michael S. Tsirkin wrote:
On Tue, Dec 04, 2012 at 07:07:58PM +0800, Jason Wang wrote:
This patch implement the ethtool_{set|get}_channels method of ethool to
allow user to change the number of queues dymaically when the device is
running. This would
On 12/04/2012 11:11 PM, Michael S. Tsirkin wrote:
On Tue, Dec 04, 2012 at 10:45:33PM +0800, Jason Wang wrote:
On Tuesday, December 04, 2012 03:24:22 PM Michael S. Tsirkin wrote:
I found some bugs, see below.
Also some style nitpicking, this is not mandatory to address.
Thanks
This patch implements the ethtool_{set|get}_channels method of virtio-net to
allow user to change the number of queues when the device is running on demand.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c | 43 +++
1 files
.
- smp affinity hint to the cpu that owns the queue pairs.
This could be used with the flow steering support of the device to guarantee the
packets of a single flow is handled by the same cpu.
Signed-off-by: Krishna Kumar krkum...@in.ibm.com
Signed-off-by: Jason Wang jasow...@redhat.com
...@in.ibm.com
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c | 282 ++
1 files changed, 158 insertions(+), 124 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 8262232..0dcaee7 100644
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 support
virtio-net: support changing the number of queue pairs through
ethtool
drivers/net/virtio_net.c| 726
This patch implements the ethtool_{set|get}_channels method of virtio-net to
allow user to change the number of queues when the device is running on demand.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c | 43 +++
1 files
.
- smp affinity hint to the cpu that owns the queue pairs.
This could be used with the flow steering support of the device to guarantee the
packets of a single flow is handled by the same cpu.
Signed-off-by: Krishna Kumar krkum...@in.ibm.com
Signed-off-by: Jason Wang jasow...@redhat.com
...@in.ibm.com
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/virtio_net.c | 282 ++
1 files changed, 158 insertions(+), 124 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 90ac97d..02a7102 100644
On Friday, December 07, 2012 04:18:56 PM Michael S. Tsirkin wrote:
Add multiqueue support to virtio network device.
Add a new feature flag VIRTIO_NET_F_MQ for this feature, a new
configuration field max_virtqueue_pairs to detect supported number of
virtqueues as well as a new command
() report errors to the caller, which could be used
caller or userspace.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/vhost/net.c | 75 +
drivers/vhost/vhost.c | 16 +-
drivers/vhost/vhost.h | 11 ++-
3 files changed
Fix the leaking of oldubufs and fd refcnt when fail to initialized used ring.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/vhost/net.c | 14 +++---
1 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index ebd08b2
On 12/27/2012 06:01 PM, Wanlong Gao wrote:
On 12/27/2012 02:39 PM, Jason Wang wrote:
Currently, polling error were ignored in vhost. This may lead some issues
(e.g
kenrel crash when passing a tap fd to vhost before calling TUNSETIFF). Fix
this
by:
Can this kernel crash be reproduced
On 12/27/2012 09:03 PM, Michael S. Tsirkin wrote:
On Thu, Dec 27, 2012 at 02:39:20PM +0800, Jason Wang wrote:
Currently, polling error were ignored in vhost. This may lead some issues
(e.g
kenrel crash when passing a tap fd to vhost before calling TUNSETIFF). Fix
this
by:
- extend
On 12/27/2012 09:14 PM, Michael S. Tsirkin wrote:
On Thu, Dec 27, 2012 at 02:39:19PM +0800, Jason Wang wrote:
Fix the leaking of oldubufs and fd refcnt when fail to initialized used ring.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/vhost/net.c | 14 +++---
1 files
405.17 9695.12 310.54 9423.76 223.47
Jason Wang (12):
tap: multiqueue support
net: introduce qemu_get_queue()
net: introduce qemu_get_nic()
net: intorduce qemu_del_nic()
net: multiqueue support
vhost: multiqueue support
virtio: introduce virtio_queue_del()
virtio: add a queue_index
) to qemu.
Each TAPState were still associated to a tap fd, which mean multiple TAPStates
were created when user needs multiqueue taps.
Only linux part were implemented now, since it's the only OS that support
multiqueue tap.
Signed-off-by: Jason Wang jasow...@redhat.com
---
net/tap-aix.c
To support multiqueue, the patch introduce a helper qemu_get_queue()
which is used to get the NetClientState of a device. The following patches would
refactor this helper to support multiqueue.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/cadence_gem.c|8 +++---
hw/dp8393x.c
To support multiqueue nic, this patch separate the nic destructor from
qemu_del_net_client() to a new helper qemu_del_nic(). The following patches
would refactor this function to support multiqueue nic.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/e1000.c |2 +-
hw/eepro100
To support multiqueue , the patch introduce a helper qemu_get_nic() to get the
NICState from a NetClientState. The following patches would refactor this helper
to support multiqueue.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/cadence_gem.c|8
hw/dp8393x.c
-by: Jason Wang jasow...@redhat.com
---
hw/dp8393x.c |2 +-
hw/mcf_fec.c |2 +-
hw/qdev-properties.c | 46 +++--
hw/qdev-properties.h |6 +-
net.c| 172 +-
net.h| 27 +++-
6
virtqueue which this vhost thread serves.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/vhost.c | 52 +---
hw/vhost.h |2 ++
hw/vhost_net.c |7 +--
hw/vhost_net.h |2 +-
hw/virtio-net.c |3 ++-
5 files changed
Add a queue_index to VirtQueue and a helper to fetch it, this could be used by
multiqueue supported device.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/virtio.c |8
hw/virtio.h |1 +
2 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/hw/virtio.c b/hw
To support multiqueue virtio-net, the first step is to separate the virtqueue
related fields from VirtIONet to a new structure VirtIONetQueue. The following
patches will add an array of VirtIONetQueue to VirtIONet based on this patch.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/virtio
This patch implements both userspace and vhost support for multiple queue
virtio-net (VIRTIO_NET_F_MQ). This is done by introducing an array of
VirtIONetQueue to VirtIONet.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/virtio-net.c | 318
This patch add migration support for multiqueue virtio-net. The version were
bumped to 12.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/virtio-net.c | 45 +++--
1 files changed, 35 insertions(+), 10 deletions(-)
diff --git a/hw/virtio-net.c b/hw
Disable multiqueue support for pre 1.4.
Signed-off-by: Jason Wang jasow...@redhat.com
---
hw/pc_piix.c |4
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 19e342a..0145370 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -295,6 +295,10
Some device (such as virtio-net) needs the ability to destroy or re-order the
virtqueues, this patch adds a helper to do this.
Signed-off-by: Jason Wang jasowang
---
hw/virtio.c |9 +
hw/virtio.h |2 ++
2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/hw/virtio.c b
On 12/29/2012 01:52 AM, Blue Swirl wrote:
On Fri, Dec 28, 2012 at 10:32 AM, Jason Wang jasow...@redhat.com wrote:
This patch implements both userspace and vhost support for multiple queue
virtio-net (VIRTIO_NET_F_MQ). This is done by introducing an array of
VirtIONetQueue to VirtIONet
in vhost_net since
it was replaced by the checking of poll-wqh.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/vhost/net.c | 74
drivers/vhost/vhost.c | 31 +++-
drivers/vhost/vhost.h |2 +-
3 files changed, 49
the state before the ioctl when vhost_init_used() fails
- log the error when meet polling errors in the data path
- don't put into waitqueue when tun_chr_poll() return POLLERR
Jason Wang (2):
vhost_net: correct error handling in vhost_net_set_backend()
vhost: handle polling errors
drivers/vhost
Currently, when vhost_init_used() fails the sock refcnt and ubufs were
leaked. Correct this by calling vhost_init_used() before assign ubufs and
restore the oldsock when it fails.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/vhost/net.c | 16 +++-
1 files changed, 11
On 01/06/2013 09:22 PM, Michael S. Tsirkin wrote:
On Sun, Jan 06, 2013 at 03:18:38PM +0800, Jason Wang wrote:
Polling errors were ignored by vhost/vhost_net, this may lead to crash when
trying to remove vhost from waitqueue when after the polling is failed. Solve
this problem by:
- checking
On 01/07/2013 10:55 PM, Michael S. Tsirkin wrote:
On Mon, Jan 07, 2013 at 12:38:17PM +0800, Jason Wang wrote:
On 01/06/2013 09:22 PM, Michael S. Tsirkin wrote:
On Sun, Jan 06, 2013 at 03:18:38PM +0800, Jason Wang wrote:
Polling errors were ignored by vhost/vhost_net, this may lead to crash
On 07/07/2011 08:57 PM, Michael S. Tsirkin wrote:
Subject: vhost: used ring logging cleanup
remove extra log bit setting for used ring updates: it's no longer
necessary. Also, use vhost_avail_event instead of duplicating offset
math.
Signed-off-by: Michael S. Tsirkinm...@redhat.com
---
We
As we've moved socket related structure to
file-private_data, we can separate system calls that only
touch tfile from others as they don't need hold rtnl lock.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/tun.c | 52 ++--
1 files
Signed-off-by: Jason Wang jasow...@redhat.com
---
include/linux/if_tun.h |2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h
index 06b1829..c92a291 100644
--- a/include/linux/if_tun.h
+++ b/include/linux/if_tun.h
@@ -34,6 +34,7
for
multiqueue tap device. And RCU is used for doing
synchronization between packet handling and system calls
such as removing queues.
Currently, multiqueue support is limited for tap , but it's
easy also enable it for tun if we find it was also helpful.
Signed-off-by: Jason Wang jasow
, and this file could be re-attach to the
tap device as a queue again.
After those ioctls were added, userspace can create a
multiqueue tap device by open /dev/net/tap and call
TUNSETIFF, then it could easily control the number of queues
through TUNATTACHQUEUE and TUNDETACHQUEUE.
Signed-off-by: Jason Wang
packets.
- addressing the comments of virtio-net driver
- performance tunning
Please review and comment it, Thanks.
---
Jason Wang (5):
tuntap: move socket/sock related structures to tun_file
tuntap: categorize ioctl
tuntap: introduce multiqueue related flags
tuntap
to be attached to a single tap device.
Signed-off-by: Jason Wang jasow...@redhat.com
---
drivers/net/tun.c | 349 +++--
1 files changed, 180 insertions(+), 169 deletions(-)
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 71f3d1a..2739887
From: Krishna Kumar krkum...@in.ibm.com
Move queue_index from virtio_pci_vq_info to virtqueue. This
allows callback handlers to figure out the queue number for
the vq that needs attention.
Signed-off-by: Krishna Kumar krkum...@in.ibm.com
---
drivers/virtio/virtio_pci.c | 10 +++---
From: Krishna Kumar krkum...@in.ibm.com
Implement mq virtio-net driver.
Though struct virtio_net_config changes, it works with the old
qemu since the last element is not accessed unless qemu sets
VIRTIO_NET_F_MULTIQUEUE.
Signed-off-by: Krishna Kumar krkum...@in.ibm.com
Signed-off-by: Jason Wang
Jason Wang writes:
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 multiple queue support in tun/tap
- Original Message -
On Fri, 2011-08-12 at 09:55 +0800, Jason Wang wrote:
From: Krishna Kumar krkum...@in.ibm.com
Implement mq virtio-net driver.
Though struct virtio_net_config changes, it works with the old
qemu since the last element is not accessed unless qemu sets
- Original Message -
Le vendredi 12 août 2011 à 09:55 +0800, Jason Wang a écrit :
+ rxq = skb_get_rxhash(skb);
+ if (rxq) {
+ tfile = rcu_dereference(tun-tfiles[rxq % numqueues]);
+ if (tfile)
+ goto out;
+ }
You can avoid an expensive divide with following trick :
u32 idx
- Original Message -
On Fri, Aug 12, 2011 at 09:55:20AM +0800, Jason Wang wrote:
With the abstraction that each socket were a backend of a
queue for userspace, this patch adds multiqueue support for
tap device by allowing multiple sockets to be attached to a
tap device. Then we
- Original Message -
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
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 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 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
Hello Michael:
Based on our experiences with TAP networking scripts, the
verify_mac_ip_pair() could not work well under multiple nics when
testing linux guests. The main problem is the policy of multiple
interfaces responding in linux, we should take care of the value of
Hi All:
This patch tries to add tap network support in kvm-autotest. Multiple nics
connected to different bridges could be achieved through this script. Public
bridge is important for testing real network traffic and migration. The patch
gives each nic with randomly generated mac address. The
Michael Goldish 写道:
- jason wang jasow...@redhat.com wrote:
sudhir kumar 写道:
Hi Uri/Lucas,
Do you have any plans for enhancing kvm-autotest?
I was looking mainly on the following 2 aspects:
(1).
we have standalone migration only. Is there any plans of enhancing
kvm-autotest so
could be finally found somehow.
During our tests, the scripts may fail to get the IP address of guest
when host iptables is turned on.
Please see additional comments below.
- Jason Wang jasow...@redhat.com wrote:
Hi All:
This patch tries to add tap network support in kvm-autotest
Michael Goldish 写道:
- sudhir kumar smalik...@gmail.com wrote:
On Thu, May 14, 2009 at 12:22 PM, jason wang jasow...@redhat.com
wrote:
sudhir kumar 写道:
Hi Uri/Lucas,
Do you have any plans for enhancing kvm-autotest?
I was looking mainly on the following 2 aspects:
(1).
we
sudhir kumar 写道:
2009/5/14 sudhir kumar smalik...@gmail.com:
On Thu, May 14, 2009 at 12:22 PM, jason wang jasow...@redhat.com wrote:
sudhir kumar 写道:
Hi Uri/Lucas,
Do you have any plans for enhancing kvm-autotest?
I was looking mainly on the following 2 aspects:
(1).
we
Hello Michael:
The shutdown case is useful but the patch does really similar work to
vm.destroy(). Maybe we could simple let the preprocess progress to
shutdown all the vms just like:
- shutdown: install setup
vms = ''
Michael Goldish 写道:
The shutdown test logs into a VM and
format after test - Reviewed
2) Step file tests: introducing a new feature and some small changes - Reviewed
3) Introducing kvm_subprocess - Reviewed
Jason Wang (jasow...@redhat.com)
1) TAP network support in kvm
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
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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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
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 07/06/2012 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
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 07/20/2012 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 07/29/2012 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 +
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