linux-toradex.git/include/linux/hyperv.h, branch v4.6-rc3

Drivers: hv: util: Pass the channel information during the init call

2016-03-02T00:57:20+00:00

Pass the channel information to the util drivers that need to defer
reading the channel while they are processing a request. This would address
the following issue reported by Vitaly:

Commit 3cace4a61610 ("Drivers: hv: utils: run polling callback always in
interrupt context") removed direct *_transaction.state = HVUTIL_READY
assignments from *_handle_handshake() functions introducing the following
race: if a userspace daemon connects before we get first non-negotiation
request from the server hv_poll_channel() won't set transaction state to
HVUTIL_READY as (!channel) condition will fail, we set it to non-NULL on
the first real request from the server.

Signed-off-by: K. Y. Srinivasan 
Reported-by: Vitaly Kuznetsov 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: Give control over how the ring access is serialized

2016-02-08T05:34:12+00:00

On the channel send side, many of the VMBUS
device drivers explicity serialize access to the
outgoing ring buffer. Give more control to the
VMBUS device drivers in terms how to serialize
accesss to the outgoing ring buffer.
The default behavior will be to aquire the
ring lock to preserve the current behavior.

Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: add an API vmbus_hvsock_device_unregister()

2016-02-08T05:34:12+00:00

The hvsock driver needs this API to release all the resources related
to the channel.

Signed-off-by: Dexuan Cui 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: add a per-channel rescind callback

2016-02-08T05:34:12+00:00

This will be used by the coming hv_sock driver.

Signed-off-by: Dexuan Cui 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

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

2016-02-08T05:34:12+00:00

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: Dexuan Cui 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: define a new VMBus message type for hvsock

2016-02-08T05:34:12+00:00

A function to send the type of message is also added.

The coming net/hvsock driver will use this function to proactively request
the host to offer a VMBus channel for a new hvsock connection.

Signed-off-by: Dexuan Cui 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: define the new offer type for Hyper-V socket (hvsock)

2016-02-08T05:34:12+00:00

A helper function is also added.

Signed-off-by: Dexuan Cui 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: add a helper function to set a channel's pending send size

2016-02-08T05:34:12+00:00

This will be used by the coming net/hvsock driver.

Signed-off-by: Dexuan Cui 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: Add vendor and device atttributes

2016-02-08T05:32:57+00:00

Add vendor and device attributes to VMBUS devices. These will be used
by Hyper-V tools as well user-level RDMA libraries that will use the
vendor/device tuple to discover the RDMA device.

Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: fix the building warning with hyperv-keyboard

2015-12-21T21:07:56+00:00

With the recent change af3ff643ea91ba64dd8d0b1cbed54d44512f96cd
(Drivers: hv: vmbus: Use uuid_le type consistently), we always get this
warning:

  CC [M]  drivers/input/serio/hyperv-keyboard.o
drivers/input/serio/hyperv-keyboard.c:427:2: warning: missing braces around
	initializer [-Wmissing-braces]
  { HV_KBD_GUID, },
  ^
drivers/input/serio/hyperv-keyboard.c:427:2: warning: (near initialization
	for .id_table[0].guid.b.) [-Wmissing-braces]

The patch fixes the warning.

Signed-off-by: Dexuan Cui 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman