LXR linux/include/net/irda/wrapper.h

   1/*********************************************************************
   2 *                
   3 * Filename:      wrapper.h
   4 * Version:       1.2
   5 * Description:   IrDA SIR async wrapper layer
   6 * Status:        Experimental.
   7 * Author:        Dag Brattli <dagb@cs.uit.no>
   8 * Created at:    Mon Aug  4 20:40:53 1997
   9 * Modified at:   Tue Jan 11 12:37:29 2000
  10 * Modified by:   Dag Brattli <dagb@cs.uit.no>
  11 * 
  12 *     Copyright (c) 1998-2000 Dag Brattli <dagb@cs.uit.no>, 
  13 *     All Rights Reserved.
  14 *     
  15 *     This program is free software; you can redistribute it and/or 
  16 *     modify it under the terms of the GNU General Public License as 
  17 *     published by the Free Software Foundation; either version 2 of 
  18 *     the License, or (at your option) any later version.
  19 *
  20 *     Neither Dag Brattli nor University of Tromsø admit liability nor
  21 *     provide warranty for any of this software. This material is 
  22 *     provided "AS-IS" and at no charge.
  23 *
  24 ********************************************************************/
  25
  26#ifndef WRAPPER_H
  27#define WRAPPER_H
  28
  29#include <linux/types.h>
  30#include <linux/skbuff.h>
  31#include <linux/netdevice.h>
  32
  33#include <net/irda/irda_device.h>       /* iobuff_t */
  34
  35#define BOF  0xc0 /* Beginning of frame */
  36#define XBOF 0xff
  37#define EOF  0xc1 /* End of frame */
  38#define CE   0x7d /* Control escape */
  39
  40#define STA BOF  /* Start flag */
  41#define STO EOF  /* End flag */
  42
  43#define IRDA_TRANS 0x20    /* Asynchronous transparency modifier */       
  44
  45/* States for receiving a frame in async mode */
  46enum {
  47        OUTSIDE_FRAME, 
  48        BEGIN_FRAME, 
  49        LINK_ESCAPE, 
  50        INSIDE_FRAME
  51};
  52
  53/* Proto definitions */
  54int async_wrap_skb(struct sk_buff *skb, __u8 *tx_buff, int buffsize);
  55void async_unwrap_char(struct net_device *dev, struct net_device_stats *stats,
  56                       iobuff_t *buf, __u8 byte);
  57
  58#endif
  59