2011-05-13 02:34:37 +00:00
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/*
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*
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* Copyright (c) 2011, 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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* K. Y. Srinivasan <kys@microsoft.com>
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*
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*/
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#ifndef _HYPERV_NET_H
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#define _HYPERV_NET_H
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2011-05-13 02:34:38 +00:00
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#include "hyperv.h"
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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 list_ent;
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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 list_ent;
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struct hv_device *device;
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bool is_data_pkt;
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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 *xfer_page_pkt;
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union {
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struct {
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u64 recv_completion_tid;
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void *recv_completion_ctx;
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void (*recv_completion)(void *context);
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} recv;
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struct {
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u64 send_completion_tid;
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void *send_completion_ctx;
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void (*send_completion)(void *context);
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} send;
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} completion;
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/* This points to the memory after page_buf */
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void *extension;
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u32 total_data_buflen;
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/* Points to the send/receive buffer where the ethernet frame is */
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u32 page_buf_cnt;
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struct hv_page_buffer page_buf[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 ring_buf_size;
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u32 req_ext_size;
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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 (*recv_cb)(struct hv_device *dev,
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struct hv_netvsc_packet *packet);
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void (*link_status_change)(struct hv_device *dev, u32 status);
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/* Specific to this driver */
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int (*send)(struct hv_device *dev, struct hv_netvsc_packet *packet);
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void *ctx;
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};
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static inline
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struct netvsc_driver *drv_to_netvscdrv(struct device_driver *d)
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{
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struct hv_driver *hvdrv = drv_to_hv_drv(d);
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return container_of(hvdrv, struct netvsc_driver, base);
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}
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struct netvsc_device_info {
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unsigned char mac_adr[6];
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bool link_state; /* 0 - link up, 1 - link down */
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};
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/* Interface */
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int netvsc_device_add(struct hv_device *device, void *additional_info);
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int netvsc_device_remove(struct hv_device *device);
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int netvsc_initialize(struct hv_driver *drv);
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int rndis_filter_open(struct hv_device *dev);
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int rndis_filter_close(struct hv_device *dev);
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int rndis_filte_device_add(struct hv_device *dev,
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void *additional_info);
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int rndis_filter_device_remove(struct hv_device *dev);
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2011-05-13 02:34:37 +00:00
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#endif /* _HYPERV_NET_H */
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