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Commit c38b9c71 authored by K. Y. Srinivasan's avatar K. Y. Srinivasan Committed by Greg Kroah-Hartman
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Staging: hv: netvsc: Introduce state to manage the lifecycle of net device 



Introduce state to manage the lifecycle of net device.

Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 509ee387

drivers/staging/hv/hyperv_net.h

+1 −0
Original line number Diff line number Diff line
@@ -371,6 +371,7 @@ struct netvsc_device { 


	atomic_t refcnt;

	atomic_t num_outstanding_sends;

	bool destroy;

	/*

	 * List of free preallocated hv_netvsc_packet to represent receive

	 * packet

drivers/staging/hv/netvsc.c

+6 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ static struct netvsc_device *alloc_net_device(struct hv_device *device) 
	/* Set to 2 to allow both inbound and outbound traffic */

	atomic_set(&net_device->refcnt, 2);



	net_device->destroy = false;

	net_device->dev = device;

	device->ext = net_device;
@@ -396,6 +397,7 @@ int netvsc_device_remove(struct hv_device *device) 
{

	struct netvsc_device *net_device;

	struct hv_netvsc_packet *netvsc_packet, *pos;

	unsigned long flags;



	/* Stop outbound traffic ie sends and receives completions */

	net_device = release_outbound_net_device(device);
@@ -404,6 +406,10 @@ int netvsc_device_remove(struct hv_device *device) 
		return -ENODEV;

	}



	spin_lock_irqsave(&device->channel->inbound_lock, flags);

	net_device->destroy = true;

	spin_unlock_irqrestore(&device->channel->inbound_lock, flags);



	/* Wait for all send completions */

	while (atomic_read(&net_device->num_outstanding_sends)) {

		dev_err(&device->device,