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Commit 5c23a1a5 authored by Dexuan Cui's avatar Dexuan Cui Committed by Greg Kroah-Hartman
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Drivers: hv: vmbus: define a new VMBus message type for hvsock 



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: 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 5f363bc3

drivers/hv/channel.c

+15 −0
Original line number Diff line number Diff line
@@ -219,6 +219,21 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, 
}

EXPORT_SYMBOL_GPL(vmbus_open);



/* Used for Hyper-V Socket: a guest client's connect() to the host */

int vmbus_send_tl_connect_request(const uuid_le *shv_guest_servie_id,

				  const uuid_le *shv_host_servie_id)

{

	struct vmbus_channel_tl_connect_request conn_msg;



	memset(&conn_msg, 0, sizeof(conn_msg));

	conn_msg.header.msgtype = CHANNELMSG_TL_CONNECT_REQUEST;

	conn_msg.guest_endpoint_id = *shv_guest_servie_id;

	conn_msg.host_service_id = *shv_host_servie_id;



	return vmbus_post_msg(&conn_msg, sizeof(conn_msg));

}

EXPORT_SYMBOL_GPL(vmbus_send_tl_connect_request);



/*

 * create_gpadl_header - Creates a gpadl for the specified buffer

 */

drivers/hv/channel_mgmt.c

+4 −0
Original line number Diff line number Diff line
@@ -958,6 +958,10 @@ struct vmbus_channel_message_table_entry 
	{CHANNELMSG_VERSION_RESPONSE,		1, vmbus_onversion_response},

	{CHANNELMSG_UNLOAD,			0, NULL},

	{CHANNELMSG_UNLOAD_RESPONSE,		1, vmbus_unload_response},

	{CHANNELMSG_18,				0, NULL},

	{CHANNELMSG_19,				0, NULL},

	{CHANNELMSG_20,				0, NULL},

	{CHANNELMSG_TL_CONNECT_REQUEST,		0, NULL},

};



/*

include/linux/hyperv.h

+13 −0
Original line number Diff line number Diff line
@@ -392,6 +392,10 @@ enum vmbus_channel_message_type { 
	CHANNELMSG_VERSION_RESPONSE		= 15,

	CHANNELMSG_UNLOAD			= 16,

	CHANNELMSG_UNLOAD_RESPONSE		= 17,

	CHANNELMSG_18				= 18,

	CHANNELMSG_19				= 19,

	CHANNELMSG_20				= 20,

	CHANNELMSG_TL_CONNECT_REQUEST		= 21,

	CHANNELMSG_COUNT

};
@@ -562,6 +566,13 @@ struct vmbus_channel_initiate_contact { 
	u64 monitor_page2;

} __packed;



/* Hyper-V socket: guest's connect()-ing to host */

struct vmbus_channel_tl_connect_request {

	struct vmbus_channel_message_header header;

	uuid_le guest_endpoint_id;

	uuid_le host_service_id;

} __packed;



struct vmbus_channel_version_response {

	struct vmbus_channel_message_header header;

	u8 version_supported;
@@ -1283,4 +1294,6 @@ void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid); 


extern __u32 vmbus_proto_version;



int vmbus_send_tl_connect_request(const uuid_le *shv_guest_servie_id,

				  const uuid_le *shv_host_servie_id);

#endif /* _HYPERV_H */