[PATCH 176/206] Staging: hv: Include the contents of netvsc.h

[K. Y. Srinivasan]

The subject line says it all.

Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Signed-off-by: Abhishek Kane <v-abkane@xxxxxxxxxxxxx>
Signed-off-by: Hank Janssen <hjanssen@xxxxxxxxxxxxx>
---
 drivers/staging/hv/hyperv_net.h |  297 +++++++++++++++++++++++++++++++++++++++
 1 files changed, 297 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/hv/hyperv_net.h b/drivers/staging/hv/hyperv_net.h
index 2a00730..37d6bab 100644
--- a/drivers/staging/hv/hyperv_net.h
+++ b/drivers/staging/hv/hyperv_net.h
@@ -127,4 +127,301 @@ int rndis_filte_device_add(struct hv_device *dev,
 int rndis_filter_device_remove(struct hv_device *dev);
 
 
+#define NVSP_INVALID_PROTOCOL_VERSION	((u32)0xFFFFFFFF)
+
+#define NVSP_PROTOCOL_VERSION_1		2
+#define NVSP_MIN_PROTOCOL_VERSION	NVSP_PROTOCOL_VERSION_1
+#define NVSP_MAX_PROTOCOL_VERSION	NVSP_PROTOCOL_VERSION_1
+
+enum {
+	NVSP_MSG_TYPE_NONE = 0,
+
+	/* Init Messages */
+	NVSP_MSG_TYPE_INIT			= 1,
+	NVSP_MSG_TYPE_INIT_COMPLETE		= 2,
+
+	NVSP_VERSION_MSG_START			= 100,
+
+	/* Version 1 Messages */
+	NVSP_MSG1_TYPE_SEND_NDIS_VER		= NVSP_VERSION_MSG_START,
+
+	NVSP_MSG1_TYPE_SEND_RECV_BUF,
+	NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
+	NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
+
+	NVSP_MSG1_TYPE_SEND_SEND_BUF,
+	NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
+	NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
+
+	NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
+	NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
+
+	/*
+	 * This should be set to the number of messages for the version with
+	 * the maximum number of messages.
+	 */
+	NVSP_NUM_MSG_PER_VERSION		= 9,
+};
+
+enum {
+	NVSP_STAT_NONE = 0,
+	NVSP_STAT_SUCCESS,
+	NVSP_STAT_FAIL,
+	NVSP_STAT_PROTOCOL_TOO_NEW,
+	NVSP_STAT_PROTOCOL_TOO_OLD,
+	NVSP_STAT_INVALID_RNDIS_PKT,
+	NVSP_STAT_BUSY,
+	NVSP_STAT_MAX,
+};
+
+struct nvsp_message_header {
+	u32 msg_type;
+};
+
+/* Init Messages */
+
+/*
+ * This message is used by the VSC to initialize the channel after the channels
+ * has been opened. This message should never include anything other then
+ * versioning (i.e. this message will be the same for ever).
+ */
+struct nvsp_message_init {
+	u32 min_protocol_ver;
+	u32 max_protocol_ver;
+} __packed;
+
+/*
+ * This message is used by the VSP to complete the initialization of the
+ * channel. This message should never include anything other then versioning
+ * (i.e. this message will be the same for ever).
+ */
+struct nvsp_message_init_complete {
+	u32 negotiated_protocol_ver;
+	u32 max_mdl_chain_len;
+	u32 status;
+} __packed;
+
+union nvsp_message_init_uber {
+	struct nvsp_message_init init;
+	struct nvsp_message_init_complete init_complete;
+} __packed;
+
+/* Version 1 Messages */
+
+/*
+ * This message is used by the VSC to send the NDIS version to the VSP. The VSP
+ * can use this information when handling OIDs sent by the VSC.
+ */
+struct nvsp_1_message_send_ndis_version {
+	u32 ndis_major_ver;
+	u32 ndis_minor_ver;
+} __packed;
+
+/*
+ * This message is used by the VSC to send a receive buffer to the VSP. The VSP
+ * can then use the receive buffer to send data to the VSC.
+ */
+struct nvsp_1_message_send_receive_buffer {
+	u32 gpadl_handle;
+	u16 id;
+} __packed;
+
+struct nvsp_1_receive_buffer_section {
+	u32 offset;
+	u32 sub_alloc_size;
+	u32 num_sub_allocs;
+	u32 end_offset;
+} __packed;
+
+/*
+ * This message is used by the VSP to acknowledge a receive buffer send by the
+ * VSC. This message must be sent by the VSP before the VSP uses the receive
+ * buffer.
+ */
+struct nvsp_1_message_send_receive_buffer_complete {
+	u32 status;
+	u32 num_sections;
+
+	/*
+	 * The receive buffer is split into two parts, a large suballocation
+	 * section and a small suballocation section. These sections are then
+	 * suballocated by a certain size.
+	 */
+
+	/*
+	 * For example, the following break up of the receive buffer has 6
+	 * large suballocations and 10 small suballocations.
+	 */
+
+	/*
+	 * |            Large Section          |  |   Small Section   |
+	 * ------------------------------------------------------------
+	 * |     |     |     |     |     |     |  | | | | | | | | | | |
+	 * |                                      |
+	 *  LargeOffset                            SmallOffset
+	 */
+
+	struct nvsp_1_receive_buffer_section sections[1];
+} __packed;
+
+/*
+ * This message is sent by the VSC to revoke the receive buffer.  After the VSP
+ * completes this transaction, the vsp should never use the receive buffer
+ * again.
+ */
+struct nvsp_1_message_revoke_receive_buffer {
+	u16 id;
+};
+
+/*
+ * This message is used by the VSC to send a send buffer to the VSP. The VSC
+ * can then use the send buffer to send data to the VSP.
+ */
+struct nvsp_1_message_send_send_buffer {
+	u32 gpadl_handle;
+	u16 id;
+} __packed;
+
+/*
+ * This message is used by the VSP to acknowledge a send buffer sent by the
+ * VSC. This message must be sent by the VSP before the VSP uses the sent
+ * buffer.
+ */
+struct nvsp_1_message_send_send_buffer_complete {
+	u32 status;
+
+	/*
+	 * The VSC gets to choose the size of the send buffer and the VSP gets
+	 * to choose the sections size of the buffer.  This was done to enable
+	 * dynamic reconfigurations when the cost of GPA-direct buffers
+	 * decreases.
+	 */
+	u32 section_size;
+} __packed;
+
+/*
+ * This message is sent by the VSC to revoke the send buffer.  After the VSP
+ * completes this transaction, the vsp should never use the send buffer again.
+ */
+struct nvsp_1_message_revoke_send_buffer {
+	u16 id;
+};
+
+/*
+ * This message is used by both the VSP and the VSC to send a RNDIS message to
+ * the opposite channel endpoint.
+ */
+struct nvsp_1_message_send_rndis_packet {
+	/*
+	 * This field is specified by RNIDS. They assume there's two different
+	 * channels of communication. However, the Network VSP only has one.
+	 * Therefore, the channel travels with the RNDIS packet.
+	 */
+	u32 channel_type;
+
+	/*
+	 * This field is used to send part or all of the data through a send
+	 * buffer. This values specifies an index into the send buffer. If the
+	 * index is 0xFFFFFFFF, then the send buffer is not being used and all
+	 * of the data was sent through other VMBus mechanisms.
+	 */
+	u32 send_buf_section_index;
+	u32 send_buf_section_size;
+} __packed;
+
+/*
+ * This message is used by both the VSP and the VSC to complete a RNDIS message
+ * to the opposite channel endpoint. At this point, the initiator of this
+ * message cannot use any resources associated with the original RNDIS packet.
+ */
+struct nvsp_1_message_send_rndis_packet_complete {
+	u32 status;
+};
+
+union nvsp_1_message_uber {
+	struct nvsp_1_message_send_ndis_version send_ndis_ver;
+
+	struct nvsp_1_message_send_receive_buffer send_recv_buf;
+	struct nvsp_1_message_send_receive_buffer_complete
+						send_recv_buf_complete;
+	struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
+
+	struct nvsp_1_message_send_send_buffer send_send_buf;
+	struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
+	struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
+
+	struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
+	struct nvsp_1_message_send_rndis_packet_complete
+						send_rndis_pkt_complete;
+} __packed;
+
+union nvsp_all_messages {
+	union nvsp_message_init_uber init_msg;
+	union nvsp_1_message_uber v1_msg;
+} __packed;
+
+/* ALL Messages */
+struct nvsp_message {
+	struct nvsp_message_header hdr;
+	union nvsp_all_messages msg;
+} __packed;
+
+
+
+
+/* #define NVSC_MIN_PROTOCOL_VERSION		1 */
+/* #define NVSC_MAX_PROTOCOL_VERSION		1 */
+
+#define NETVSC_SEND_BUFFER_SIZE			(64*1024)	/* 64K */
+#define NETVSC_SEND_BUFFER_ID			0xface
+
+
+#define NETVSC_RECEIVE_BUFFER_SIZE		(1024*1024)	/* 1MB */
+
+#define NETVSC_RECEIVE_BUFFER_ID		0xcafe
+
+#define NETVSC_RECEIVE_SG_COUNT			1
+
+/* Preallocated receive packets */
+#define NETVSC_RECEIVE_PACKETLIST_COUNT		256
+
+#define NETVSC_PACKET_SIZE                      2048
+
+/* Per netvsc channel-specific */
+struct netvsc_device {
+	struct hv_device *dev;
+
+	atomic_t refcnt;
+	atomic_t num_outstanding_sends;
+	/*
+	 * List of free preallocated hv_netvsc_packet to represent receive
+	 * packet
+	 */
+	struct list_head recv_pkt_list;
+	spinlock_t recv_pkt_list_lock;
+
+	/* Send buffer allocated by us but manages by NetVSP */
+	void *send_buf;
+	u32 send_buf_size;
+	u32 send_buf_gpadl_handle;
+	u32 send_section_size;
+
+	/* Receive buffer allocated by us but manages by NetVSP */
+	void *recv_buf;
+	u32 recv_buf_size;
+	u32 recv_buf_gpadl_handle;
+	u32 recv_section_cnt;
+	struct nvsp_1_receive_buffer_section *recv_section;
+
+	/* Used for NetVSP initialization protocol */
+	struct completion channel_init_wait;
+	struct nvsp_message channel_init_pkt;
+
+	struct nvsp_message revoke_packet;
+	/* unsigned char HwMacAddr[HW_MACADDR_LEN]; */
+
+	/* Holds rndis device info */
+	void *extension;
+};
+
 #endif /* _HYPERV_NET_H */
-- 
1.7.4.1

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