19d7810624
List.h is no longer used and can be removed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Hank Janssen <hjanssen@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
124 lines
3.1 KiB
C
124 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 _NETVSC_API_H_
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#define _NETVSC_API_H_
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#include "VmbusApi.h"
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/* Defines */
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#define NETVSC_DEVICE_RING_BUFFER_SIZE (64*PAGE_SIZE)
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#define HW_MACADDR_LEN 6
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/* Fwd declaration */
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struct hv_netvsc_packet;
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/* Represent the xfer page packet which contains 1 or more netvsc packet */
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struct xferpage_packet {
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struct list_head ListEntry;
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/* # of netvsc packets this xfer packet contains */
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u32 Count;
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};
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/* The number of pages which are enough to cover jumbo frame buffer. */
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#define NETVSC_PACKET_MAXPAGE 4
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/*
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* Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
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* within the RNDIS
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*/
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struct hv_netvsc_packet {
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/* Bookkeeping stuff */
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struct list_head ListEntry;
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struct hv_device *Device;
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bool IsDataPacket;
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/*
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* Valid only for receives when we break a xfer page packet
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* into multiple netvsc packets
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*/
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struct xferpage_packet *XferPagePacket;
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union {
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struct{
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u64 ReceiveCompletionTid;
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void *ReceiveCompletionContext;
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void (*OnReceiveCompletion)(void *context);
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} Recv;
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struct{
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u64 SendCompletionTid;
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void *SendCompletionContext;
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void (*OnSendCompletion)(void *context);
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} Send;
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} Completion;
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/* This points to the memory after PageBuffers */
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void *Extension;
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u32 TotalDataBufferLength;
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/* Points to the send/receive buffer where the ethernet frame is */
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u32 PageBufferCount;
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struct hv_page_buffer PageBuffers[NETVSC_PACKET_MAXPAGE];
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};
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/* Represents the net vsc driver */
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struct netvsc_driver {
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/* Must be the first field */
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/* Which is a bug FIXME! */
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struct hv_driver Base;
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u32 RingBufferSize;
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u32 RequestExtSize;
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/* Additional num of page buffers to allocate */
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u32 AdditionalRequestPageBufferCount;
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/*
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* This is set by the caller to allow us to callback when we
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* receive a packet from the "wire"
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*/
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int (*OnReceiveCallback)(struct hv_device *dev,
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struct hv_netvsc_packet *packet);
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void (*OnLinkStatusChanged)(struct hv_device *dev, u32 Status);
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/* Specific to this driver */
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int (*OnOpen)(struct hv_device *dev);
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int (*OnClose)(struct hv_device *dev);
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int (*OnSend)(struct hv_device *dev, struct hv_netvsc_packet *packet);
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void *Context;
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};
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struct netvsc_device_info {
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unsigned char MacAddr[6];
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bool LinkState; /* 0 - link up, 1 - link down */
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};
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/* Interface */
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int NetVscInitialize(struct hv_driver *drv);
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#endif /* _NETVSC_API_H_ */
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