mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 09:50:04 +00:00
![Haiyang Zhang](/assets/img/avatar_default.png)
Fix some missing author names. They were accidentally removed by someone within Microsoft before the files were sent for inclusion in the kernel. Signed-off-by: Hank Janssen <hjanssen@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
330 lines
9 KiB
C
330 lines
9 KiB
C
/*
|
|
*
|
|
* Copyright (c) 2009, Microsoft Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
|
|
* Place - Suite 330, Boston, MA 02111-1307 USA.
|
|
*
|
|
* Authors:
|
|
* Haiyang Zhang <haiyangz@microsoft.com>
|
|
* Hank Janssen <hjanssen@microsoft.com>
|
|
*
|
|
*/
|
|
|
|
|
|
#ifndef _NETVSC_H_
|
|
#define _NETVSC_H_
|
|
|
|
#include <linux/list.h>
|
|
#include "VmbusPacketFormat.h"
|
|
#include "VmbusChannelInterface.h"
|
|
#include "NetVscApi.h"
|
|
|
|
|
|
#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 {
|
|
NvspMessageTypeNone = 0,
|
|
|
|
/* Init Messages */
|
|
NvspMessageTypeInit = 1,
|
|
NvspMessageTypeInitComplete = 2,
|
|
|
|
NvspVersionMessageStart = 100,
|
|
|
|
/* Version 1 Messages */
|
|
NvspMessage1TypeSendNdisVersion = NvspVersionMessageStart,
|
|
|
|
NvspMessage1TypeSendReceiveBuffer,
|
|
NvspMessage1TypeSendReceiveBufferComplete,
|
|
NvspMessage1TypeRevokeReceiveBuffer,
|
|
|
|
NvspMessage1TypeSendSendBuffer,
|
|
NvspMessage1TypeSendSendBufferComplete,
|
|
NvspMessage1TypeRevokeSendBuffer,
|
|
|
|
NvspMessage1TypeSendRNDISPacket,
|
|
NvspMessage1TypeSendRNDISPacketComplete,
|
|
|
|
/*
|
|
* This should be set to the number of messages for the version with
|
|
* the maximum number of messages.
|
|
*/
|
|
NvspNumMessagePerVersion = 9,
|
|
};
|
|
|
|
enum {
|
|
NvspStatusNone = 0,
|
|
NvspStatusSuccess,
|
|
NvspStatusFailure,
|
|
NvspStatusProtocolVersionRangeTooNew,
|
|
NvspStatusProtocolVersionRangeTooOld,
|
|
NvspStatusInvalidRndisPacket,
|
|
NvspStatusBusy,
|
|
NvspStatusMax,
|
|
};
|
|
|
|
struct nvsp_message_header {
|
|
u32 MessageType;
|
|
};
|
|
|
|
/* 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 MinProtocolVersion;
|
|
u32 MaxProtocolVersion;
|
|
} __attribute__((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 NegotiatedProtocolVersion;
|
|
u32 MaximumMdlChainLength;
|
|
u32 Status;
|
|
} __attribute__((packed));
|
|
|
|
union nvsp_message_init_uber {
|
|
struct nvsp_message_init Init;
|
|
struct nvsp_message_init_complete InitComplete;
|
|
} __attribute__((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 NdisMajorVersion;
|
|
u32 NdisMinorVersion;
|
|
} __attribute__((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 GpadlHandle;
|
|
u16 Id;
|
|
} __attribute__((packed));
|
|
|
|
struct nvsp_1_receive_buffer_section {
|
|
u32 Offset;
|
|
u32 SubAllocationSize;
|
|
u32 NumSubAllocations;
|
|
u32 EndOffset;
|
|
} __attribute__((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 NumSections;
|
|
|
|
/*
|
|
* 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];
|
|
} __attribute__((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 GpadlHandle;
|
|
u16 Id;
|
|
} __attribute__((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 SectionSize;
|
|
} __attribute__((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 ChannelType;
|
|
|
|
/*
|
|
* 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 SendBufferSectionIndex;
|
|
u32 SendBufferSectionSize;
|
|
} __attribute__((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 SendNdisVersion;
|
|
|
|
struct nvsp_1_message_send_receive_buffer SendReceiveBuffer;
|
|
struct nvsp_1_message_send_receive_buffer_complete
|
|
SendReceiveBufferComplete;
|
|
struct nvsp_1_message_revoke_receive_buffer RevokeReceiveBuffer;
|
|
|
|
struct nvsp_1_message_send_send_buffer SendSendBuffer;
|
|
struct nvsp_1_message_send_send_buffer_complete SendSendBufferComplete;
|
|
struct nvsp_1_message_revoke_send_buffer RevokeSendBuffer;
|
|
|
|
struct nvsp_1_message_send_rndis_packet SendRNDISPacket;
|
|
struct nvsp_1_message_send_rndis_packet_complete
|
|
SendRNDISPacketComplete;
|
|
} __attribute__((packed));
|
|
|
|
union nvsp_all_messages {
|
|
union nvsp_message_init_uber InitMessages;
|
|
union nvsp_1_message_uber Version1Messages;
|
|
} __attribute__((packed));
|
|
|
|
/* ALL Messages */
|
|
struct nvsp_message {
|
|
struct nvsp_message_header Header;
|
|
union nvsp_all_messages Messages;
|
|
} __attribute__((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
|
|
|
|
|
|
/* Per netvsc channel-specific */
|
|
struct netvsc_device {
|
|
struct hv_device *Device;
|
|
|
|
atomic_t RefCount;
|
|
atomic_t NumOutstandingSends;
|
|
/*
|
|
* List of free preallocated hv_netvsc_packet to represent receive
|
|
* packet
|
|
*/
|
|
struct list_head ReceivePacketList;
|
|
spinlock_t receive_packet_list_lock;
|
|
|
|
/* Send buffer allocated by us but manages by NetVSP */
|
|
void *SendBuffer;
|
|
u32 SendBufferSize;
|
|
u32 SendBufferGpadlHandle;
|
|
u32 SendSectionSize;
|
|
|
|
/* Receive buffer allocated by us but manages by NetVSP */
|
|
void *ReceiveBuffer;
|
|
u32 ReceiveBufferSize;
|
|
u32 ReceiveBufferGpadlHandle;
|
|
u32 ReceiveSectionCount;
|
|
struct nvsp_1_receive_buffer_section *ReceiveSections;
|
|
|
|
/* Used for NetVSP initialization protocol */
|
|
struct osd_waitevent *ChannelInitEvent;
|
|
struct nvsp_message ChannelInitPacket;
|
|
|
|
struct nvsp_message RevokePacket;
|
|
/* unsigned char HwMacAddr[HW_MACADDR_LEN]; */
|
|
|
|
/* Holds rndis device info */
|
|
void *Extension;
|
|
};
|
|
|
|
#endif /* _NETVSC_H_ */
|