linux/include/linux/if_frad.h
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   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
  24#ifndef _FRAD_H_
  25#define _FRAD_H_
  26
  27#include <linux/if.h>
  28
  29/* Structures and constants associated with the DLCI device driver */
  30
  31struct dlci_add
  32{
  33   char  devname[IFNAMSIZ];
  34   short dlci;
  35};
  36
  37#define DLCI_GET_CONF   (SIOCDEVPRIVATE + 2)
  38#define DLCI_SET_CONF   (SIOCDEVPRIVATE + 3)
  39
  40/* 
  41 * These are related to the Sangoma SDLA and should remain in order. 
  42 * Code within the SDLA module is based on the specifics of this 
  43 * structure.  Change at your own peril.
  44 */
  45struct dlci_conf {
  46   short flags;
  47   short CIR_fwd;
  48   short Bc_fwd;
  49   short Be_fwd;
  50   short CIR_bwd;
  51   short Bc_bwd;
  52   short Be_bwd; 
  53
  54/* these are part of the status read */
  55   short Tc_fwd;
  56   short Tc_bwd;
  57   short Tf_max;
  58   short Tb_max;
  59
  60/* add any new fields here above is a mirror of sdla_dlci_conf */
  61};
  62
  63#define DLCI_GET_SLAVE  (SIOCDEVPRIVATE + 4)
  64
  65/* configuration flags for DLCI */
  66#define DLCI_IGNORE_CIR_OUT     0x0001
  67#define DLCI_ACCOUNT_CIR_IN     0x0002
  68#define DLCI_BUFFER_IF          0x0008
  69
  70#define DLCI_VALID_FLAGS        0x000B
  71
  72/* defines for the actual Frame Relay hardware */
  73#define FRAD_GET_CONF   (SIOCDEVPRIVATE)
  74#define FRAD_SET_CONF   (SIOCDEVPRIVATE + 1)
  75
  76#define FRAD_LAST_IOCTL FRAD_SET_CONF
  77
  78/*
  79 * Based on the setup for the Sangoma SDLA.  If changes are 
  80 * necessary to this structure, a routine will need to be 
  81 * added to that module to copy fields.
  82 */
  83struct frad_conf 
  84{
  85   short station;
  86   short flags;
  87   short kbaud;
  88   short clocking;
  89   short mtu;
  90   short T391;
  91   short T392;
  92   short N391;
  93   short N392;
  94   short N393;
  95   short CIR_fwd;
  96   short Bc_fwd;
  97   short Be_fwd;
  98   short CIR_bwd;
  99   short Bc_bwd;
 100   short Be_bwd;
 101
 102/* Add new fields here, above is a mirror of the sdla_conf */
 103
 104};
 105
 106#define FRAD_STATION_CPE        0x0000
 107#define FRAD_STATION_NODE       0x0001
 108
 109#define FRAD_TX_IGNORE_CIR      0x0001
 110#define FRAD_RX_ACCOUNT_CIR     0x0002
 111#define FRAD_DROP_ABORTED       0x0004
 112#define FRAD_BUFFERIF           0x0008
 113#define FRAD_STATS              0x0010
 114#define FRAD_MCI                0x0100
 115#define FRAD_AUTODLCI           0x8000
 116#define FRAD_VALID_FLAGS        0x811F
 117
 118#define FRAD_CLOCK_INT          0x0001
 119#define FRAD_CLOCK_EXT          0x0000
 120
 121#ifdef __KERNEL__
 122
 123#if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE)
 124
 125/* these are the fields of an RFC 1490 header */
 126struct frhdr
 127{
 128   unsigned char  control;
 129
 130   /* for IP packets, this can be the NLPID */
 131   unsigned char  pad;
 132
 133   unsigned char  NLPID;
 134   unsigned char  OUI[3];
 135   __be16 PID;
 136
 137#define IP_NLPID pad 
 138} __packed;
 139
 140/* see RFC 1490 for the definition of the following */
 141#define FRAD_I_UI               0x03
 142
 143#define FRAD_P_PADDING          0x00
 144#define FRAD_P_Q933             0x08
 145#define FRAD_P_SNAP             0x80
 146#define FRAD_P_CLNP             0x81
 147#define FRAD_P_IP               0xCC
 148
 149struct dlci_local
 150{
 151   struct net_device      *master;
 152   struct net_device      *slave;
 153   struct dlci_conf       config;
 154   int                    configured;
 155   struct list_head       list;
 156
 157   /* callback function */
 158   void              (*receive)(struct sk_buff *skb, struct net_device *);
 159};
 160
 161struct frad_local
 162{
 163   struct net_device_stats stats;
 164
 165   /* devices which this FRAD is slaved to */
 166   struct net_device     *master[CONFIG_DLCI_MAX];
 167   short             dlci[CONFIG_DLCI_MAX];
 168
 169   struct frad_conf  config;
 170   int               configured;        /* has this device been configured */
 171   int               initialized;       /* mem_start, port, irq set ? */
 172
 173   /* callback functions */
 174   int               (*activate)(struct net_device *, struct net_device *);
 175   int               (*deactivate)(struct net_device *, struct net_device *);
 176   int               (*assoc)(struct net_device *, struct net_device *);
 177   int               (*deassoc)(struct net_device *, struct net_device *);
 178   int               (*dlci_conf)(struct net_device *, struct net_device *, int get);
 179
 180   /* fields that are used by the Sangoma SDLA cards */
 181   struct timer_list timer;
 182   int               type;              /* adapter type */
 183   int               state;             /* state of the S502/8 control latch */
 184   int               buffer;            /* current buffer for S508 firmware */
 185};
 186
 187#endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */
 188
 189extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *));
 190
 191#endif /* __KERNEL__ */
 192
 193#endif
 194
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