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Commit 8981da32 authored by Dexuan Cui's avatar Dexuan Cui Committed by Greg Kroah-Hartman
Browse files

Drivers: hv: vmbus: add a hvsock flag in struct hv_driver 



Only the coming hv_sock driver has a "true" value for this flag.

We treat the hvsock offers/channels as special VMBus devices.
Since the hv_sock driver handles all the hvsock offers/channels, we need to
tweak vmbus_match() for hv_sock driver, so we introduce this flag.

Signed-off-by: default avatarDexuan Cui <decui@microsoft.com>
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5c23a1a5

drivers/hv/vmbus_drv.c

+4 −0
Original line number Diff line number Diff line
@@ -582,6 +582,10 @@ static int vmbus_match(struct device *device, struct device_driver *driver) 
	struct hv_driver *drv = drv_to_hv_drv(driver);

	struct hv_device *hv_dev = device_to_hv_device(device);



	/* The hv_sock driver handles all hv_sock offers. */

	if (is_hvsock_channel(hv_dev->channel))

		return drv->hvsock;



	if (hv_vmbus_get_id(drv->id_table, &hv_dev->dev_type))

		return 1;

include/linux/hyperv.h

+14 −0
Original line number Diff line number Diff line
@@ -990,6 +990,20 @@ extern void vmbus_ontimer(unsigned long data); 
struct hv_driver {

	const char *name;



	/*

	 * A hvsock offer, which has a VMBUS_CHANNEL_TLNPI_PROVIDER_OFFER

	 * channel flag, actually doesn't mean a synthetic device because the

	 * offer's if_type/if_instance can change for every new hvsock

	 * connection.

	 *

	 * However, to facilitate the notification of new-offer/rescind-offer

	 * from vmbus driver to hvsock driver, we can handle hvsock offer as

	 * a special vmbus device, and hence we need the below flag to

	 * indicate if the driver is the hvsock driver or not: we need to

	 * specially treat the hvosck offer & driver in vmbus_match().

	 */

	bool hvsock;



	/* the device type supported by this driver */

	uuid_le dev_type;

	const struct hv_vmbus_device_id *id_table;