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 #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 */
  32 struct 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
  55 struct 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
  67 struct 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
  95 extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *));
  96
  97 #endif