LXR linux/include/linux/if

   1/*
   2 * DLCI/FRAD    Definitions for Frame Relay Access Devices.  DLCI devices are
   3 *              created for each DLCI associated with a FRAD.  The FRAD driver
   4 *              is not truly a network device, but the lower level device
   5 *              handler.  This allows other FRAD manufacturers to use the DLCI
   6 *              code, including its RFC1490 encapsulation alongside the current
   7 *              implementation for the Sangoma cards.
   8 *
   9 * Version:     @(#)if_ifrad.h  0.15    31 Mar 96
  10 *
  11 * Author:      Mike McLagan <mike.mclagan@linux.org>
  12 *
  13 * Changes:
  14 *              0.15    Mike McLagan    changed structure defs (packed)
  15 *                                      re-arranged flags
  16 *                                      added DLCI_RET vars
  17 *
  18 *              This program is free software; you can redistribute it and/or
  19 *              modify it under the terms of the GNU General Public License
  20 *              as published by the Free Software Foundation; either version
  21 *              2 of the License, or (at your option) any later version.
  22 */
  23#ifndef _FRAD_H_
  24#define _FRAD_H_
  25
  26#include <uapi/linux/if_frad.h>
  27
  28
  29#if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE)
  30
  31/* these are the fields of an RFC 1490 header */
  32struct frhdr
  33{
  34   unsigned char  control;
  35
  36   /* for IP packets, this can be the NLPID */
  37   unsigned char  pad;
  38
  39   unsigned char  NLPID;
  40   unsigned char  OUI[3];
  41   __be16 PID;
  42
  43#define IP_NLPID pad 
  44} __packed;
  45
  46/* see RFC 1490 for the definition of the following */
  47#define FRAD_I_UI               0x03
  48
  49#define FRAD_P_PADDING          0x00
  50#define FRAD_P_Q933             0x08
  51#define FRAD_P_SNAP             0x80
  52#define FRAD_P_CLNP             0x81
  53#define FRAD_P_IP               0xCC
  54
  55struct dlci_local
  56{
  57   struct net_device      *master;
  58   struct net_device      *slave;
  59   struct dlci_conf       config;
  60   int                    configured;
  61   struct list_head       list;
  62
  63   /* callback function */
  64   void              (*receive)(struct sk_buff *skb, struct net_device *);
  65};
  66
  67struct frad_local
  68{
  69   struct net_device_stats stats;
  70
  71   /* devices which this FRAD is slaved to */
  72   struct net_device     *master[CONFIG_DLCI_MAX];
  73   short             dlci[CONFIG_DLCI_MAX];
  74
  75   struct frad_conf  config;
  76   int               configured;        /* has this device been configured */
  77   int               initialized;       /* mem_start, port, irq set ? */
  78
  79   /* callback functions */
  80   int               (*activate)(struct net_device *, struct net_device *);
  81   int               (*deactivate)(struct net_device *, struct net_device *);
  82   int               (*assoc)(struct net_device *, struct net_device *);
  83   int               (*deassoc)(struct net_device *, struct net_device *);
  84   int               (*dlci_conf)(struct net_device *, struct net_device *, int get);
  85
  86   /* fields that are used by the Sangoma SDLA cards */
  87   struct timer_list timer;
  88   int               type;              /* adapter type */
  89   int               state;             /* state of the S502/8 control latch */
  90   int               buffer;            /* current buffer for S508 firmware */
  91};
  92
  93#endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */
  94
  95extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *));
  96
  97#endif
  98