include/linux/if_frad.h

   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/config.h>
  28 #include <linux/if.h>
  29
  30 #if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE)
  31
  32 /* Structures and constants associated with the DLCI device driver */
  33
  34 struct dlci_add
  35 {
  36    char  devname[IFNAMSIZ];
  37    short dlci;
  38 };
  39
  40 #define DLCI_GET_CONF   (SIOCDEVPRIVATE + 2)
  41 #define DLCI_SET_CONF   (SIOCDEVPRIVATE + 3)
  42
  43 /*
  44  * These are related to the Sangoma SDLA and should remain in order.
  45  * Code within the SDLA module is based on the specifics of this
  46  * structure.  Change at your own peril.
  47  */
  48 struct dlci_conf {
  49    short flags;
  50    short CIR_fwd;
  51    short Bc_fwd;
  52    short Be_fwd;
  53    short CIR_bwd;
  54    short Bc_bwd;
  55    short Be_bwd;
  56
  57 /* these are part of the status read */
  58    short Tc_fwd;
  59    short Tc_bwd;
  60    short Tf_max;
  61    short Tb_max;
  62
  63 /* add any new fields here above is a mirror of sdla_dlci_conf */
  64 };
  65
  66 #define DLCI_GET_SLAVE  (SIOCDEVPRIVATE + 4)
  67
  68 /* configuration flags for DLCI */
  69 #define DLCI_IGNORE_CIR_OUT     0x0001
  70 #define DLCI_ACCOUNT_CIR_IN     0x0002
  71 #define DLCI_BUFFER_IF          0x0008
  72
  73 #define DLCI_VALID_FLAGS        0x000B
  74
  75 /* FRAD driver uses these to indicate what it did with packet */
  76 #define DLCI_RET_OK             0x00
  77 #define DLCI_RET_ERR            0x01
  78 #define DLCI_RET_DROP           0x02
  79
  80 /* defines for the actual Frame Relay hardware */
  81 #define FRAD_GET_CONF   (SIOCDEVPRIVATE)
  82 #define FRAD_SET_CONF   (SIOCDEVPRIVATE + 1)
  83
  84 #define FRAD_LAST_IOCTL FRAD_SET_CONF
  85
  86 /*
  87  * Based on the setup for the Sangoma SDLA.  If changes are
  88  * necessary to this structure, a routine will need to be
  89  * added to that module to copy fields.
  90  */
  91 struct frad_conf
  92 {
  93    short station;
  94    short flags;
  95    short kbaud;
  96    short clocking;
  97    short mtu;
  98    short T391;
  99    short T392;
 100    short N391;
 101    short N392;
 102    short N393;
 103    short CIR_fwd;
 104    short Bc_fwd;
 105    short Be_fwd;
 106    short CIR_bwd;
 107    short Bc_bwd;
 108    short Be_bwd;
 109
 110 /* Add new fields here, above is a mirror of the sdla_conf */
 111
 112 };
 113
 114 #define FRAD_STATION_CPE        0x0000
 115 #define FRAD_STATION_NODE       0x0001
 116
 117 #define FRAD_TX_IGNORE_CIR      0x0001
 118 #define FRAD_RX_ACCOUNT_CIR     0x0002
 119 #define FRAD_DROP_ABORTED       0x0004
 120 #define FRAD_BUFFERIF           0x0008
 121 #define FRAD_STATS              0x0010
 122 #define FRAD_MCI                0x0100
 123 #define FRAD_AUTODLCI           0x8000
 124 #define FRAD_VALID_FLAGS        0x811F
 125
 126 #define FRAD_CLOCK_INT          0x0001
 127 #define FRAD_CLOCK_EXT          0x0000
 128
 129 #ifdef __KERNEL__
 130
 131 /* these are the fields of an RFC 1490 header */
 132 struct frhdr
 133 {
 134    unsigned char  control       __attribute__((packed));
 135
 136    /* for IP packets, this can be the NLPID */
 137    unsigned char  pad           __attribute__((packed));
 138
 139    unsigned char  NLPID         __attribute__((packed));
 140    unsigned char  OUI[3]        __attribute__((packed));
 141    unsigned short PID           __attribute__((packed));
 142
 143 #define IP_NLPID pad
 144 };
 145
 146 /* see RFC 1490 for the definition of the following */
 147 #define FRAD_I_UI               0x03
 148
 149 #define FRAD_P_PADDING          0x00
 150 #define FRAD_P_Q933             0x08
 151 #define FRAD_P_SNAP             0x80
 152 #define FRAD_P_CLNP             0x81
 153 #define FRAD_P_IP               0xCC
 154
 155 struct dlci_local
 156 {
 157    struct net_device_stats stats;
 158    struct net_device      *master;
 159    struct net_device      *slave;
 160    struct dlci_conf       config;
 161    int                    configured;
 162    struct list_head       list;
 163
 164    /* callback function */
 165    void              (*receive)(struct sk_buff *skb, struct net_device *);
 166 };
 167
 168 struct frad_local
 169 {
 170    struct net_device_stats stats;
 171
 172    /* devices which this FRAD is slaved to */
 173    struct net_device     *master[CONFIG_DLCI_MAX];
 174    short             dlci[CONFIG_DLCI_MAX];
 175
 176    struct frad_conf  config;
 177    int               configured;        /* has this device been configured */
 178    int               initialized;       /* mem_start, port, irq set ? */
 179
 180    /* callback functions */
 181    int               (*activate)(struct net_device *, struct net_device *);
 182    int               (*deactivate)(struct net_device *, struct net_device *);
 183    int               (*assoc)(struct net_device *, struct net_device *);
 184    int               (*deassoc)(struct net_device *, struct net_device *);
 185    int               (*dlci_conf)(struct net_device *, struct net_device *, int get);
 186
 187    /* fields that are used by the Sangoma SDLA cards */
 188    struct timer_list timer;
 189    int               type;              /* adapter type */
 190    int               state;             /* state of the S502/8 control latch */
 191    int               buffer;            /* current buffer for S508 firmware */
 192 };
 193
 194 extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *));
 195
 196 #endif /* __KERNEL__ */
 197
 198 #endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */
 199
 200 #endif