2024-09-09 08:52:07 +00:00
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/*
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* DLCI/FRAD Definitions for Frame Relay Access Devices. DLCI devices are
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* created for each DLCI associated with a FRAD. The FRAD driver
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* is not truly a network device, but the lower level device
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* handler. This allows other FRAD manufacturers to use the DLCI
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* code, including its RFC1490 encapsulation alongside the current
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* implementation for the Sangoma cards.
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*
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* Version: @(#)if_ifrad.h 0.15 31 Mar 96
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*
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* Author: Mike McLagan <mike.mclagan@linux.org>
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*
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* Changes:
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* 0.15 Mike McLagan changed structure defs (packed)
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* re-arranged flags
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* added DLCI_RET vars
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _FRAD_H_
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#define _FRAD_H_
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2024-09-09 08:57:42 +00:00
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#include <uapi/linux/if_frad.h>
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2024-09-09 08:52:07 +00:00
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#if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE)
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/* these are the fields of an RFC 1490 header */
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struct frhdr
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{
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unsigned char control;
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/* for IP packets, this can be the NLPID */
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unsigned char pad;
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unsigned char NLPID;
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unsigned char OUI[3];
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__be16 PID;
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#define IP_NLPID pad
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} __packed;
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/* see RFC 1490 for the definition of the following */
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#define FRAD_I_UI 0x03
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#define FRAD_P_PADDING 0x00
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#define FRAD_P_Q933 0x08
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#define FRAD_P_SNAP 0x80
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#define FRAD_P_CLNP 0x81
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#define FRAD_P_IP 0xCC
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struct dlci_local
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{
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struct net_device *master;
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struct net_device *slave;
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struct dlci_conf config;
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int configured;
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struct list_head list;
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/* callback function */
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void (*receive)(struct sk_buff *skb, struct net_device *);
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};
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struct frad_local
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{
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struct net_device_stats stats;
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/* devices which this FRAD is slaved to */
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struct net_device *master[CONFIG_DLCI_MAX];
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short dlci[CONFIG_DLCI_MAX];
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struct frad_conf config;
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int configured; /* has this device been configured */
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int initialized; /* mem_start, port, irq set ? */
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/* callback functions */
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int (*activate)(struct net_device *, struct net_device *);
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int (*deactivate)(struct net_device *, struct net_device *);
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int (*assoc)(struct net_device *, struct net_device *);
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int (*deassoc)(struct net_device *, struct net_device *);
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int (*dlci_conf)(struct net_device *, struct net_device *, int get);
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/* fields that are used by the Sangoma SDLA cards */
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struct timer_list timer;
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int type; /* adapter type */
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int state; /* state of the S502/8 control latch */
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int buffer; /* current buffer for S508 firmware */
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};
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#endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */
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extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *));
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#endif
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