RE: [PATCH V2 15/15] hyperv: Add a function to detect if the device is a vmbus dev

[KY Srinivasan]

> -Original Message-
> From: Greg KH [mailto:gre...@linuxfoundation.org]
> Sent: Tuesday, December 6, 2016 2:54 AM
> To: KY Srinivasan 
> Cc: linux-ker...@vger.kernel.org; de...@linuxdriverproject.org;
> o...@aepfle.de; a...@canonical.com; vkuzn...@redhat.com;
> jasow...@redhat.com; leann.ogasaw...@canonical.com; Haiyang Zhang
> 
> Subject: Re: [PATCH V2 15/15] hyperv: Add a function to detect if the device
> is a vmbus dev
> 
> On Sat, Dec 03, 2016 at 12:34:42PM -0800, k...@exchange.microsoft.com
> wrote:
> > From: Haiyang Zhang 
> >
> > On Hyper-V, every VF interface has a corresponding synthetic
> > interface managed by netvsc that share the same MAC
> > address. netvsc registers for netdev events to manage this
> > association. Currently we use the MAC address to manage this
> > association but going forward, we want to use a serial number that
> > the host publishes. To do this we need functionality similar
> > to dev_is_pci() for the vmbus devices. Implement such a function.
> >
> > This function will be used in subsequent patches to netvsc and in the
> > interest of eliminating cross tree dependencies, this patch is being
> > submitted first.
> 
> As I stated before, I want to see those patches before I will take this
> one...

Thanks Greg; we will send you the patches.

K. Y
> 
> thanks,
> 
> greg k-h
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Re: [PATCH V2 15/15] hyperv: Add a function to detect if the device is a vmbus dev

[Greg KH]

On Sat, Dec 03, 2016 at 12:34:42PM -0800, k...@exchange.microsoft.com wrote:
> From: Haiyang Zhang 
> 
> On Hyper-V, every VF interface has a corresponding synthetic
> interface managed by netvsc that share the same MAC
> address. netvsc registers for netdev events to manage this
> association. Currently we use the MAC address to manage this
> association but going forward, we want to use a serial number that
> the host publishes. To do this we need functionality similar
> to dev_is_pci() for the vmbus devices. Implement such a function.
> 
> This function will be used in subsequent patches to netvsc and in the
> interest of eliminating cross tree dependencies, this patch is being
> submitted first.

As I stated before, I want to see those patches before I will take this
one...

thanks,

greg k-h
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[PATCH V2 15/15] hyperv: Add a function to detect if the device is a vmbus dev

[kys]

From: Haiyang Zhang 

On Hyper-V, every VF interface has a corresponding synthetic
interface managed by netvsc that share the same MAC
address. netvsc registers for netdev events to manage this
association. Currently we use the MAC address to manage this
association but going forward, we want to use a serial number that
the host publishes. To do this we need functionality similar
to dev_is_pci() for the vmbus devices. Implement such a function.

This function will be used in subsequent patches to netvsc and in the
interest of eliminating cross tree dependencies, this patch is being
submitted first.

Signed-off-by: Haiyang Zhang 
Signed-off-by: K. Y. Srinivasan 
---
 drivers/hv/vmbus_drv.c |6 ++
 include/linux/hyperv.h |2 ++
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 565bdd1..fe96f1e 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -846,6 +846,12 @@ struct onmessage_work_context {
struct hv_message msg;
 };
 
+bool dev_is_vmbus(struct device *dev)
+{
+   return dev->bus == _bus;
+}
+EXPORT_SYMBOL_GPL(dev_is_vmbus);
+
 static void vmbus_onmessage_work(struct work_struct *work)
 {
struct onmessage_work_context *ctx;
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 1d0ebe9..918c15b 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -947,6 +947,8 @@ static inline void clear_low_latency_mode(struct 
vmbus_channel *c)
c->low_latency = false;
 }
 
+bool dev_is_vmbus(struct device *dev);
+
 void vmbus_onmessage(void *context);
 
 int vmbus_request_offers(void);
-- 
1.7.4.1

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