![Greg Kroah-Hartman](/assets/img/avatar_default.png)
Cc: Hank Janssen <hjanssen@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/*
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*
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* Copyright (c) 2009, Microsoft Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*
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* Authors:
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* Haiyang Zhang <haiyangz@microsoft.com>
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* Hank Janssen <hjanssen@microsoft.com>
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*
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*/
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#ifndef _CHANNEL_H_
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#define _CHANNEL_H_
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#include "channel_mgmt.h"
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/* The format must be the same as struct vmdata_gpa_direct */
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struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER {
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u16 Type;
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u16 DataOffset8;
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u16 Length8;
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u16 Flags;
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u64 TransactionId;
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u32 Reserved;
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u32 RangeCount;
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struct hv_page_buffer Range[MAX_PAGE_BUFFER_COUNT];
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} __attribute__((packed));
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/* The format must be the same as struct vmdata_gpa_direct */
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struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER {
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u16 Type;
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u16 DataOffset8;
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u16 Length8;
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u16 Flags;
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u64 TransactionId;
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u32 Reserved;
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u32 RangeCount; /* Always 1 in this case */
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struct hv_multipage_buffer Range;
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} __attribute__((packed));
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extern int VmbusChannelOpen(struct vmbus_channel *channel,
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u32 SendRingBufferSize,
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u32 RecvRingBufferSize,
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void *UserData,
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u32 UserDataLen,
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void(*OnChannelCallback)(void *context),
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void *Context);
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extern void VmbusChannelClose(struct vmbus_channel *channel);
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extern int VmbusChannelSendPacket(struct vmbus_channel *channel,
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const void *Buffer,
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u32 BufferLen,
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u64 RequestId,
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enum vmbus_packet_type Type,
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u32 Flags);
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extern int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *channel,
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struct hv_page_buffer PageBuffers[],
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u32 PageCount,
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void *Buffer,
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u32 BufferLen,
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u64 RequestId);
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extern int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *channel,
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struct hv_multipage_buffer *mpb,
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void *Buffer,
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u32 BufferLen,
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u64 RequestId);
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extern int VmbusChannelEstablishGpadl(struct vmbus_channel *channel,
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void *Kbuffer,
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u32 Size,
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u32 *GpadlHandle);
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extern int VmbusChannelTeardownGpadl(struct vmbus_channel *channel,
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u32 GpadlHandle);
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extern int VmbusChannelRecvPacket(struct vmbus_channel *channel,
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void *Buffer,
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u32 BufferLen,
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u32 *BufferActualLen,
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u64 *RequestId);
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extern int VmbusChannelRecvPacketRaw(struct vmbus_channel *channel,
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void *Buffer,
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u32 BufferLen,
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u32 *BufferActualLen,
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u64 *RequestId);
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extern void VmbusChannelOnChannelEvent(struct vmbus_channel *channel);
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extern void VmbusChannelGetDebugInfo(struct vmbus_channel *channel,
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struct vmbus_channel_debug_info *debug);
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extern void VmbusChannelOnTimer(unsigned long data);
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#endif /* _CHANNEL_H_ */
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