root/include/linux/if_frad.h

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INCLUDED FROM


   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 it's RFC1490 encapsulation along side 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 /* Structures and constants associated with the DLCI device driver */
  28 
  29 #define DLCI_DEVADD     (SIOCDEVPRIVATE)
  30 #define DLCI_DEVDEL     (SIOCDEVPRIVATE + 1)
  31 
  32 struct dlci_add
  33 {
  34    char  devname[IFNAMSIZ];
  35    short dlci;
  36 };
  37 
  38 #define DLCI_GET_CONF   (SIOCDEVPRIVATE + 2)
  39 #define DLCI_SET_CONF   (SIOCDEVPRIVATE + 3)
  40 
  41 /* 
  42  * These are related to the Sangoma SDLA and should remain in order. 
  43  * Code within the SDLA module is based on the specifics of this 
  44  * structure.  Change at your own peril.
  45  */
  46 struct dlci_conf {
  47    short flags;
  48    short CIR_fwd;
  49    short Bc_fwd;
  50    short Be_fwd;
  51    short CIR_bwd;
  52    short Bc_bwd;
  53    short Be_bwd; 
  54 
  55 /* these are part of the status read */
  56    short Tc_fwd;
  57    short Tc_bwd;
  58    short Tf_max;
  59    short Tb_max;
  60 
  61 /* add any new fields here above is a mirror of sdla_dlci_conf */
  62 };
  63 
  64 #define DLCI_GET_SLAVE  (SIOCDEVPRIVATE + 4)
  65 
  66 /* configuration flags for DLCI */
  67 #define DLCI_IGNORE_CIR_OUT     0x0001
  68 #define DLCI_ACCOUNT_CIR_IN     0x0002
  69 #define DLCI_BUFFER_IF          0x0008
  70 
  71 #define DLCI_VALID_FLAGS        0x000B
  72 
  73 /* FRAD driver uses these to indicate what it did with packet */
  74 #define DLCI_RET_OK             0x00
  75 #define DLCI_RET_ERR            0x01
  76 #define DLCI_RET_DROP           0x02
  77 
  78 /* defines for the actual Frame Relay hardware */
  79 #define FRAD_GET_CONF   (SIOCDEVPRIVATE)
  80 #define FRAD_SET_CONF   (SIOCDEVPRIVATE + 1)
  81 
  82 #define FRAD_LAST_IOCTL FRAD_SET_CONF
  83 
  84 /*
  85  * Based on the setup for the Sangoma SDLA.  If changes are 
  86  * necessary to this structure, a routine will need to be 
  87  * added to that module to copy fields.
  88  */
  89 struct frad_conf 
  90 {
  91    short station;
  92    short flags;
  93    short kbaud;
  94    short clocking;
  95    short mtu;
  96    short T391;
  97    short T392;
  98    short N391;
  99    short N392;
 100    short N393;
 101    short CIR_fwd;
 102    short Bc_fwd;
 103    short Be_fwd;
 104    short CIR_bwd;
 105    short Bc_bwd;
 106    short Be_bwd;
 107 
 108 /* Add new fields here, above is a mirror of the sdla_conf */
 109 
 110 };
 111 
 112 #define FRAD_STATION_CPE        0x0000
 113 #define FRAD_STATION_NODE       0x0001
 114 
 115 #define FRAD_TX_IGNORE_CIR      0x0001
 116 #define FRAD_RX_ACCOUNT_CIR     0x0002
 117 #define FRAD_DROP_ABORTED       0x0004
 118 #define FRAD_BUFFERIF           0x0008
 119 #define FRAD_STATS              0x0010
 120 #define FRAD_MCI                0x0100
 121 #define FRAD_AUTODLCI           0x8000
 122 #define FRAD_VALID_FLAGS        0x811F
 123 
 124 #define FRAD_CLOCK_INT          0x0001
 125 #define FRAD_CLOCK_EXT          0x0000
 126 
 127 #ifdef __KERNEL__
 128 
 129 /* these are the fields of an RFC 1490 header */
 130 struct frhdr
 131 {
 132    unsigned char  control       __attribute__((packed));
 133 
 134    /* for IP packets, this can be the NLPID */
 135    unsigned char  pad           __attribute__((packed)); 
 136 
 137    unsigned char  NLPID         __attribute__((packed));
 138    unsigned char  OUI[3]        __attribute__((packed));
 139    unsigned short PID           __attribute__((packed));
 140 
 141 #define IP_NLPID pad 
 142 };
 143 
 144 /* see RFC 1490 for the definition of the following */
 145 #define FRAD_I_UI               0x03
 146 
 147 #define FRAD_P_PADDING          0x00
 148 #define FRAD_P_Q933             0x08
 149 #define FRAD_P_SNAP             0x80
 150 #define FRAD_P_CLNP             0x81
 151 #define FRAD_P_IP               0xCC
 152 
 153 struct dlci_local
 154 {
 155    struct enet_statistics stats;
 156    struct device          *slave;
 157    struct dlci_conf       config;
 158    int                    configured;
 159 
 160    /* callback function */
 161    void              (*receive)(struct sk_buff *skb, struct device *);
 162 };
 163 
 164 struct frad_local
 165 {
 166    struct enet_statistics stats;
 167 
 168    /* devices which this FRAD is slaved to */
 169    struct device     *master[CONFIG_DLCI_MAX];
 170    short             dlci[CONFIG_DLCI_MAX];
 171 
 172    struct frad_conf  config;
 173    int               configured;        /* has this device been configured */
 174    int               initialized;       /* mem_start, port, irq set ? */
 175 
 176    /* callback functions */
 177    int               (*activate)(struct device *, struct device *);
 178    int               (*deactivate)(struct device *, struct device *);
 179    int               (*assoc)(struct device *, struct device *);
 180    int               (*deassoc)(struct device *, struct device *);
 181    int               (*dlci_conf)(struct device *, struct device *, int get);
 182 
 183    /* fields that are used by the Sangoma SDLA cards */
 184    struct timer_list timer;
 185    int               type;              /* adapter type */
 186    int               state;             /* state of the S502/8 control latch */
 187    int               buffer;            /* current buffer for S508 firmware */
 188 };
 189 
 190 int register_frad(const char *name);
 191 int unregister_frad(const char *name);
 192 
 193 #endif __KERNEL__
 194 
 195 #endif

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