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/include/linux/if_frad.h

https://gitlab.com/simplified-mandatory-access-control-kernel/ossecus-simplified-mandatory-access-control-kernel
C Header | 193 lines | 110 code | 38 blank | 45 comment | 1 complexity | 1c728c82f5af965419ee535c7318c093 MD5 | raw file
  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