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kernel/linux-imx6_3.14.28/include/linux/if_frad.h 2.88 KB
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  /*
   * DLCI/FRAD	Definitions for Frame Relay Access Devices.  DLCI devices are
   *		created for each DLCI associated with a FRAD.  The FRAD driver
   *		is not truly a network device, but the lower level device
   *		handler.  This allows other FRAD manufacturers to use the DLCI
   *		code, including its RFC1490 encapsulation alongside the current
   *		implementation for the Sangoma cards.
   *
   * Version:	@(#)if_ifrad.h	0.15	31 Mar 96
   *
   * Author:	Mike McLagan <mike.mclagan@linux.org>
   *
   * Changes:
   *		0.15	Mike McLagan	changed structure defs (packed)
   *					re-arranged flags
   *					added DLCI_RET vars
   *
   *		This program is free software; you can redistribute it and/or
   *		modify it under the terms of the GNU General Public License
   *		as published by the Free Software Foundation; either version
   *		2 of the License, or (at your option) any later version.
   */
  #ifndef _FRAD_H_
  #define _FRAD_H_
  
  #include <uapi/linux/if_frad.h>
  
  
  #if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE)
  
  /* these are the fields of an RFC 1490 header */
  struct frhdr
  {
     unsigned char  control;
  
     /* for IP packets, this can be the NLPID */
     unsigned char  pad;
  
     unsigned char  NLPID;
     unsigned char  OUI[3];
     __be16 PID;
  
  #define IP_NLPID pad 
  } __packed;
  
  /* see RFC 1490 for the definition of the following */
  #define FRAD_I_UI		0x03
  
  #define FRAD_P_PADDING		0x00
  #define FRAD_P_Q933		0x08
  #define FRAD_P_SNAP		0x80
  #define FRAD_P_CLNP		0x81
  #define FRAD_P_IP		0xCC
  
  struct dlci_local
  {
     struct net_device      *master;
     struct net_device      *slave;
     struct dlci_conf       config;
     int                    configured;
     struct list_head	  list;
  
     /* callback function */
     void              (*receive)(struct sk_buff *skb, struct net_device *);
  };
  
  struct frad_local
  {
     struct net_device_stats stats;
  
     /* devices which this FRAD is slaved to */
     struct net_device     *master[CONFIG_DLCI_MAX];
     short             dlci[CONFIG_DLCI_MAX];
  
     struct frad_conf  config;
     int               configured;	/* has this device been configured */
     int               initialized;	/* mem_start, port, irq set ? */
  
     /* callback functions */
     int               (*activate)(struct net_device *, struct net_device *);
     int               (*deactivate)(struct net_device *, struct net_device *);
     int               (*assoc)(struct net_device *, struct net_device *);
     int               (*deassoc)(struct net_device *, struct net_device *);
     int               (*dlci_conf)(struct net_device *, struct net_device *, int get);
  
     /* fields that are used by the Sangoma SDLA cards */
     struct timer_list timer;
     int               type;		/* adapter type */
     int               state;		/* state of the S502/8 control latch */
     int               buffer;		/* current buffer for S508 firmware */
  };
  
  #endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */
  
  extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *));
  
  #endif