drivers/staging/hv/NetVsc.h

   1 /*
   2  *
   3  * Copyright (c) 2009, Microsoft Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  16  * Place - Suite 330, Boston, MA 02111-1307 USA.
  17  *
  18  * Authors:
  19  *   Hank Janssen  <hjanssen@microsoft.com>
  20  *
  21  */
  22
  23
  24 #ifndef _NETVSC_H_
  25 #define _NETVSC_H_
  26
  27 #include "include/VmbusPacketFormat.h"
  28 #include "include/nvspprotocol.h"
  29
  30 #include "include/List.h"
  31
  32 #include "include/NetVscApi.h"
  33
  34 /* #defines */
  35
  36 /* #define NVSC_MIN_PROTOCOL_VERSION                       1 */
  37 /* #define NVSC_MAX_PROTOCOL_VERSION                       1 */
  38
  39 #define NETVSC_SEND_BUFFER_SIZE                         64*1024 /* 64K */
  40 #define NETVSC_SEND_BUFFER_ID                           0xface
  41
  42
  43 #define NETVSC_RECEIVE_BUFFER_SIZE                      1024*1024 /* 1MB */
  44
  45 #define NETVSC_RECEIVE_BUFFER_ID                        0xcafe
  46
  47 #define NETVSC_RECEIVE_SG_COUNT                         1
  48
  49 /* Preallocated receive packets */
  50 #define NETVSC_RECEIVE_PACKETLIST_COUNT         256
  51
  52
  53 /* Data types */
  54
  55
  56 /* Per netvsc channel-specific */
  57 typedef struct _NETVSC_DEVICE {
  58         DEVICE_OBJECT                                   *Device;
  59
  60         int                                                             RefCount;
  61
  62         int                                                             NumOutstandingSends;
  63         /* List of free preallocated NETVSC_PACKET to represent receive packet */
  64         LIST_ENTRY                                              ReceivePacketList;
  65         spinlock_t receive_packet_list_lock;
  66
  67         /* Send buffer allocated by us but manages by NetVSP */
  68         void *                                                  SendBuffer;
  69         u32                                                     SendBufferSize;
  70         u32                                                     SendBufferGpadlHandle;
  71         u32                                                     SendSectionSize;
  72
  73         /* Receive buffer allocated by us but manages by NetVSP */
  74         void *                                                  ReceiveBuffer;
  75         u32                                                     ReceiveBufferSize;
  76         u32                                                     ReceiveBufferGpadlHandle;
  77         u32                                                     ReceiveSectionCount;
  78         PNVSP_1_RECEIVE_BUFFER_SECTION  ReceiveSections;
  79
  80         /* Used for NetVSP initialization protocol */
  81         HANDLE                                                  ChannelInitEvent;
  82         NVSP_MESSAGE                                    ChannelInitPacket;
  83
  84         NVSP_MESSAGE                                    RevokePacket;
  85         /* unsigned char                                                        HwMacAddr[HW_MACADDR_LEN]; */
  86
  87         /* Holds rndis device info */
  88         void                                                    *Extension;
  89 } NETVSC_DEVICE;
  90
  91 #endif /* _NETVSC_H_ */