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 receving a frame in async mode */
  46 enum {
  47         OUTSIDE_FRAME,
  48         BEGIN_FRAME,
  49         LINK_ESCAPE,
  50         INSIDE_FRAME
  51 };
  52
  53 /* Proto definitions */
  54 int async_wrap_skb(struct sk_buff *skb, __u8 *tx_buff, int buffsize);
  55 void async_unwrap_char(struct net_device *dev, struct net_device_stats *stats,
  56                        iobuff_t *buf, __u8 byte);
  57
  58 #endif