diff options
Diffstat (limited to 'drivers/staging/hv/netvsc_api.h')
| -rw-r--r-- | drivers/staging/hv/netvsc_api.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/drivers/staging/hv/netvsc_api.h b/drivers/staging/hv/netvsc_api.h new file mode 100644 index 000000000000..4b5b3ac458c8 --- /dev/null +++ b/drivers/staging/hv/netvsc_api.h @@ -0,0 +1,116 @@ +/* + * + * 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_API_H_ +#define _NETVSC_API_H_ + +#include "vmbus_api.h" + +/* Fwd declaration */ +struct hv_netvsc_packet; + +/* Represent the xfer page packet which contains 1 or more netvsc packet */ +struct xferpage_packet { + struct list_head ListEntry; + + /* # of netvsc packets this xfer packet contains */ + u32 Count; +}; + +/* The number of pages which are enough to cover jumbo frame buffer. */ +#define NETVSC_PACKET_MAXPAGE 4 + +/* + * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame + * within the RNDIS + */ +struct hv_netvsc_packet { + /* Bookkeeping stuff */ + struct list_head ListEntry; + + struct hv_device *Device; + bool IsDataPacket; + + /* + * Valid only for receives when we break a xfer page packet + * into multiple netvsc packets + */ + struct xferpage_packet *XferPagePacket; + + union { + struct{ + u64 ReceiveCompletionTid; + void *ReceiveCompletionContext; + void (*OnReceiveCompletion)(void *context); + } Recv; + struct{ + u64 SendCompletionTid; + void *SendCompletionContext; + void (*OnSendCompletion)(void *context); + } Send; + } Completion; + + /* This points to the memory after PageBuffers */ + void *Extension; + + u32 TotalDataBufferLength; + /* Points to the send/receive buffer where the ethernet frame is */ + u32 PageBufferCount; + struct hv_page_buffer PageBuffers[NETVSC_PACKET_MAXPAGE]; +}; + +/* Represents the net vsc driver */ +struct netvsc_driver { + /* Must be the first field */ + /* Which is a bug FIXME! */ + struct hv_driver Base; + + u32 RingBufferSize; + u32 RequestExtSize; + + /* + * This is set by the caller to allow us to callback when we + * receive a packet from the "wire" + */ + int (*OnReceiveCallback)(struct hv_device *dev, + struct hv_netvsc_packet *packet); + void (*OnLinkStatusChanged)(struct hv_device *dev, u32 Status); + + /* Specific to this driver */ + int (*OnSend)(struct hv_device *dev, struct hv_netvsc_packet *packet); + + void *Context; +}; + +struct netvsc_device_info { + unsigned char MacAddr[6]; + bool LinkState; /* 0 - link up, 1 - link down */ +}; + +/* Interface */ +int NetVscInitialize(struct hv_driver *drv); +int RndisFilterOnOpen(struct hv_device *Device); +int RndisFilterOnClose(struct hv_device *Device); + +#endif /* _NETVSC_API_H_ */ |