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    /* devices which this FRAD is slaved to */
70    struct net_device     *master[CONFIG_DLCI_MAX];
71    short             dlci[CONFIG_DLCI_MAX];
72 
73    struct frad_conf  config;
74    int               configured;	/* has this device been configured */
75    int               initialized;	/* mem_start, port, irq set ? */
76 
77    /* callback functions */
78    int               (*activate)(struct net_device *, struct net_device *);
79    int               (*deactivate)(struct net_device *, struct net_device *);
80    int               (*assoc)(struct net_device *, struct net_device *);
81    int               (*deassoc)(struct net_device *, struct net_device *);
82    int               (*dlci_conf)(struct net_device *, struct net_device *, int get);
83 
84    /* fields that are used by the Sangoma SDLA cards */
85    struct timer_list timer;
86    struct net_device *dev;
87    int               type;		/* adapter type */
88    int               state;		/* state of the S502/8 control latch */
89    int               buffer;		/* current buffer for S508 firmware */
90 };
91 
92 #endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */
93 
94 extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *));
95 
96 #endif
97