474 lines
23 KiB
C
474 lines
23 KiB
C
/* $Id: isdn.h,v 1.125.2.3 2004/02/10 01:07:14 keil Exp $
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*
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* Main header for the Linux ISDN subsystem (linklevel).
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*
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* Copyright 1994,95,96 by Fritz Elfert (fritz@isdn4linux.de)
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* Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg
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* Copyright 1995,96 by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de)
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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*/
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#ifndef __ISDN_H__
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#define __ISDN_H__
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/major.h>
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#include <asm/io.h>
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#include <linux/kernel.h>
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#include <linux/signal.h>
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#include <linux/slab.h>
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#include <linux/timer.h>
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#include <linux/wait.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.h>
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#include <linux/serial_reg.h>
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#include <linux/fcntl.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/ip.h>
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#include <linux/in.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/tcp.h>
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#include <linux/mutex.h>
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#include <uapi/linux/isdn.h>
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#define ISDN_TTY_MAJOR 43
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#define ISDN_TTYAUX_MAJOR 44
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#define ISDN_MAJOR 45
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/* The minor-devicenumbers for Channel 0 and 1 are used as arguments for
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* physical Channel-Mapping, so they MUST NOT be changed without changing
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* the correspondent code in isdn.c
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*/
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#define ISDN_MINOR_B 0
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#define ISDN_MINOR_BMAX (ISDN_MAX_CHANNELS-1)
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#define ISDN_MINOR_CTRL 64
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#define ISDN_MINOR_CTRLMAX (64 + (ISDN_MAX_CHANNELS-1))
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#define ISDN_MINOR_PPP 128
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#define ISDN_MINOR_PPPMAX (128 + (ISDN_MAX_CHANNELS-1))
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#define ISDN_MINOR_STATUS 255
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#ifdef CONFIG_ISDN_PPP
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#ifdef CONFIG_ISDN_PPP_VJ
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# include <net/slhc_vj.h>
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#endif
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#include <linux/ppp_defs.h>
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#include <linux/ppp-ioctl.h>
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#include <linux/isdn_ppp.h>
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#endif
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#ifdef CONFIG_ISDN_X25
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# include <linux/concap.h>
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#endif
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#include <linux/isdnif.h>
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#define ISDN_DRVIOCTL_MASK 0x7f /* Mask for Device-ioctl */
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/* Until now unused */
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#define ISDN_SERVICE_VOICE 1
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#define ISDN_SERVICE_AB 1<<1
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#define ISDN_SERVICE_X21 1<<2
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#define ISDN_SERVICE_G4 1<<3
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#define ISDN_SERVICE_BTX 1<<4
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#define ISDN_SERVICE_DFUE 1<<5
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#define ISDN_SERVICE_X25 1<<6
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#define ISDN_SERVICE_TTX 1<<7
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#define ISDN_SERVICE_MIXED 1<<8
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#define ISDN_SERVICE_FW 1<<9
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#define ISDN_SERVICE_GTEL 1<<10
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#define ISDN_SERVICE_BTXN 1<<11
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#define ISDN_SERVICE_BTEL 1<<12
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/* Macros checking plain usage */
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#define USG_NONE(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NONE)
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#define USG_RAW(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_RAW)
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#define USG_MODEM(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM)
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#define USG_VOICE(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)
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#define USG_NET(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NET)
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#define USG_FAX(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_FAX)
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#define USG_OUTGOING(x) ((x & ISDN_USAGE_OUTGOING)==ISDN_USAGE_OUTGOING)
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#define USG_MODEMORVOICE(x) (((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM) || \
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((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE) )
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/* Timer-delays and scheduling-flags */
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#define ISDN_TIMER_RES 4 /* Main Timer-Resolution */
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#define ISDN_TIMER_02SEC (HZ/ISDN_TIMER_RES/5) /* Slow-Timer1 .2 sec */
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#define ISDN_TIMER_1SEC (HZ/ISDN_TIMER_RES) /* Slow-Timer2 1 sec */
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#define ISDN_TIMER_RINGING 5 /* tty RINGs = ISDN_TIMER_1SEC * this factor */
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#define ISDN_TIMER_KEEPINT 10 /* Cisco-Keepalive = ISDN_TIMER_1SEC * this factor */
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#define ISDN_TIMER_MODEMREAD 1
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#define ISDN_TIMER_MODEMPLUS 2
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#define ISDN_TIMER_MODEMRING 4
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#define ISDN_TIMER_MODEMXMIT 8
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#define ISDN_TIMER_NETDIAL 16
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#define ISDN_TIMER_NETHANGUP 32
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#define ISDN_TIMER_CARRIER 256 /* Wait for Carrier */
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#define ISDN_TIMER_FAST (ISDN_TIMER_MODEMREAD | ISDN_TIMER_MODEMPLUS | \
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ISDN_TIMER_MODEMXMIT)
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#define ISDN_TIMER_SLOW (ISDN_TIMER_MODEMRING | ISDN_TIMER_NETHANGUP | \
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ISDN_TIMER_NETDIAL | ISDN_TIMER_CARRIER)
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/* Timeout-Values for isdn_net_dial() */
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#define ISDN_TIMER_DTIMEOUT10 (10*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
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#define ISDN_TIMER_DTIMEOUT15 (15*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
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#define ISDN_TIMER_DTIMEOUT60 (60*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
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/* GLOBAL_FLAGS */
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#define ISDN_GLOBAL_STOPPED 1
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/*=================== Start of ip-over-ISDN stuff =========================*/
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/* Feature- and status-flags for a net-interface */
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#define ISDN_NET_CONNECTED 0x01 /* Bound to ISDN-Channel */
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#define ISDN_NET_SECURE 0x02 /* Accept calls from phonelist only */
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#define ISDN_NET_CALLBACK 0x04 /* activate callback */
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#define ISDN_NET_CBHUP 0x08 /* hangup before callback */
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#define ISDN_NET_CBOUT 0x10 /* remote machine does callback */
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#define ISDN_NET_MAGIC 0x49344C02 /* for paranoia-checking */
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/* Phone-list-element */
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typedef struct {
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void *next;
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char num[ISDN_MSNLEN];
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} isdn_net_phone;
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/*
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Principles when extending structures for generic encapsulation protocol
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("concap") support:
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- Stuff which is hardware specific (here i4l-specific) goes in
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the netdev -> local structure (here: isdn_net_local)
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- Stuff which is encapsulation protocol specific goes in the structure
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which holds the linux device structure (here: isdn_net_device)
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*/
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/* Local interface-data */
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typedef struct isdn_net_local_s {
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ulong magic;
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struct net_device_stats stats; /* Ethernet Statistics */
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int isdn_device; /* Index to isdn-device */
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int isdn_channel; /* Index to isdn-channel */
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int ppp_slot; /* PPPD device slot number */
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int pre_device; /* Preselected isdn-device */
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int pre_channel; /* Preselected isdn-channel */
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int exclusive; /* If non-zero idx to reserved chan.*/
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int flags; /* Connection-flags */
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int dialretry; /* Counter for Dialout-retries */
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int dialmax; /* Max. Number of Dial-retries */
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int cbdelay; /* Delay before Callback starts */
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int dtimer; /* Timeout-counter for dialing */
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char msn[ISDN_MSNLEN]; /* MSNs/EAZs for this interface */
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u_char cbhup; /* Flag: Reject Call before Callback*/
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u_char dialstate; /* State for dialing */
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u_char p_encap; /* Packet encapsulation */
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/* 0 = Ethernet over ISDN */
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/* 1 = RAW-IP */
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/* 2 = IP with type field */
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u_char l2_proto; /* Layer-2-protocol */
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/* See ISDN_PROTO_L2..-constants in */
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/* isdnif.h */
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/* 0 = X75/LAPB with I-Frames */
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/* 1 = X75/LAPB with UI-Frames */
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/* 2 = X75/LAPB with BUI-Frames */
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/* 3 = HDLC */
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u_char l3_proto; /* Layer-3-protocol */
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/* See ISDN_PROTO_L3..-constants in */
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/* isdnif.h */
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/* 0 = Transparent */
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int huptimer; /* Timeout-counter for auto-hangup */
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int charge; /* Counter for charging units */
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ulong chargetime; /* Timer for Charging info */
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int hupflags; /* Flags for charge-unit-hangup: */
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/* bit0: chargeint is invalid */
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/* bit1: Getting charge-interval */
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/* bit2: Do charge-unit-hangup */
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/* bit3: Do hangup even on incoming */
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int outgoing; /* Flag: outgoing call */
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int onhtime; /* Time to keep link up */
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int chargeint; /* Interval between charge-infos */
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int onum; /* Flag: at least 1 outgoing number */
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int cps; /* current speed of this interface */
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int transcount; /* byte-counter for cps-calculation */
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int sqfull; /* Flag: netdev-queue overloaded */
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ulong sqfull_stamp; /* Start-Time of overload */
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ulong slavedelay; /* Dynamic bundling delaytime */
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int triggercps; /* BogoCPS needed for trigger slave */
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isdn_net_phone *phone[2]; /* List of remote-phonenumbers */
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/* phone[0] = Incoming Numbers */
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/* phone[1] = Outgoing Numbers */
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isdn_net_phone *dial; /* Pointer to dialed number */
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struct net_device *master; /* Ptr to Master device for slaves */
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struct net_device *slave; /* Ptr to Slave device for masters */
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struct isdn_net_local_s *next; /* Ptr to next link in bundle */
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struct isdn_net_local_s *last; /* Ptr to last link in bundle */
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struct isdn_net_dev_s *netdev; /* Ptr to netdev */
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struct sk_buff_head super_tx_queue; /* List of supervisory frames to */
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/* be transmitted asap */
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atomic_t frame_cnt; /* number of frames currently */
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/* queued in HL driver */
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/* Ptr to orig. hard_header_cache */
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spinlock_t xmit_lock; /* used to protect the xmit path of */
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/* a particular channel (including */
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/* the frame_cnt */
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int pppbind; /* ippp device for bindings */
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int dialtimeout; /* How long shall we try on dialing? (jiffies) */
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int dialwait; /* How long shall we wait after failed attempt? (jiffies) */
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ulong dialstarted; /* jiffies of first dialing-attempt */
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ulong dialwait_timer; /* jiffies of earliest next dialing-attempt */
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int huptimeout; /* How long will the connection be up? (seconds) */
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#ifdef CONFIG_ISDN_X25
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struct concap_device_ops *dops; /* callbacks used by encapsulator */
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#endif
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/* use an own struct for that in later versions */
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ulong cisco_myseq; /* Local keepalive seq. for Cisco */
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ulong cisco_mineseen; /* returned keepalive seq. from remote */
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ulong cisco_yourseq; /* Remote keepalive seq. for Cisco */
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int cisco_keepalive_period; /* keepalive period */
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ulong cisco_last_slarp_in; /* jiffie of last keepalive packet we received */
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char cisco_line_state; /* state of line according to keepalive packets */
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char cisco_debserint; /* debugging flag of cisco hdlc with slarp */
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struct timer_list cisco_timer;
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struct work_struct tqueue;
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} isdn_net_local;
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/* the interface itself */
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typedef struct isdn_net_dev_s {
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isdn_net_local *local;
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isdn_net_local *queue; /* circular list of all bundled
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channels, which are currently
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online */
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spinlock_t queue_lock; /* lock to protect queue */
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void *next; /* Pointer to next isdn-interface */
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struct net_device *dev; /* interface to upper levels */
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#ifdef CONFIG_ISDN_PPP
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ippp_bundle * pb; /* pointer to the common bundle structure
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* with the per-bundle data */
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#endif
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#ifdef CONFIG_ISDN_X25
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struct concap_proto *cprot; /* connection oriented encapsulation protocol */
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#endif
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} isdn_net_dev;
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/*===================== End of ip-over-ISDN stuff ===========================*/
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/*======================= Start of ISDN-tty stuff ===========================*/
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#define ISDN_ASYNC_MAGIC 0x49344C01 /* for paranoia-checking */
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#define ISDN_SERIAL_XMIT_SIZE 1024 /* Default bufsize for write */
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#define ISDN_SERIAL_XMIT_MAX 4000 /* Maximum bufsize for write */
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#ifdef CONFIG_ISDN_AUDIO
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/* For using sk_buffs with audio we need some private variables
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* within each sk_buff. For this purpose, we declare a struct here,
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* and put it always at the private skb->cb data array. A few macros help
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* accessing the variables.
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*/
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typedef struct _isdn_audio_data {
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unsigned short dle_count;
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unsigned char lock;
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} isdn_audio_data_t;
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#define ISDN_AUDIO_SKB_DLECOUNT(skb) (((isdn_audio_data_t *)&skb->cb[0])->dle_count)
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#define ISDN_AUDIO_SKB_LOCK(skb) (((isdn_audio_data_t *)&skb->cb[0])->lock)
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#endif
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/* Private data of AT-command-interpreter */
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typedef struct atemu {
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u_char profile[ISDN_MODEM_NUMREG]; /* Modem-Regs. Profile 0 */
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u_char mdmreg[ISDN_MODEM_NUMREG]; /* Modem-Registers */
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char pmsn[ISDN_MSNLEN]; /* EAZ/MSNs Profile 0 */
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char msn[ISDN_MSNLEN]; /* EAZ/MSN */
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char plmsn[ISDN_LMSNLEN]; /* Listening MSNs Profile 0 */
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char lmsn[ISDN_LMSNLEN]; /* Listening MSNs */
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char cpn[ISDN_MSNLEN]; /* CalledPartyNumber on incoming call */
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char connmsg[ISDN_CMSGLEN]; /* CONNECT-Msg from HL-Driver */
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#ifdef CONFIG_ISDN_AUDIO
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u_char vpar[10]; /* Voice-parameters */
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int lastDLE; /* Flag for voice-coding: DLE seen */
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#endif
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int mdmcmdl; /* Length of Modem-Commandbuffer */
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int pluscount; /* Counter for +++ sequence */
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u_long lastplus; /* Timestamp of last + */
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int carrierwait; /* Seconds of carrier waiting */
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char mdmcmd[255]; /* Modem-Commandbuffer */
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unsigned int charge; /* Charge units of current connection */
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} atemu;
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/* Private data (similar to async_struct in <linux/serial.h>) */
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typedef struct modem_info {
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int magic;
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struct tty_port port;
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int x_char; /* xon/xoff character */
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int mcr; /* Modem control register */
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int msr; /* Modem status register */
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int lsr; /* Line status register */
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int line;
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int online; /* 1 = B-Channel is up, drop data */
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/* 2 = B-Channel is up, deliver d.*/
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int dialing; /* Dial in progress or ATA */
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int closing;
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int rcvsched; /* Receive needs schedule */
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int isdn_driver; /* Index to isdn-driver */
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int isdn_channel; /* Index to isdn-channel */
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int drv_index; /* Index to dev->usage */
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int ncarrier; /* Flag: schedule NO CARRIER */
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unsigned char last_cause[8]; /* Last cause message */
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unsigned char last_num[ISDN_MSNLEN];
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/* Last phone-number */
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unsigned char last_l2; /* Last layer-2 protocol */
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unsigned char last_si; /* Last service */
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unsigned char last_lhup; /* Last hangup local? */
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unsigned char last_dir; /* Last direction (in or out) */
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struct timer_list nc_timer; /* Timer for delayed NO CARRIER */
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int send_outstanding;/* # of outstanding send-requests */
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int xmit_size; /* max. # of chars in xmit_buf */
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int xmit_count; /* # of chars in xmit_buf */
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struct sk_buff_head xmit_queue; /* transmit queue */
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atomic_t xmit_lock; /* Semaphore for isdn_tty_write */
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#ifdef CONFIG_ISDN_AUDIO
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int vonline; /* Voice-channel status */
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/* Bit 0 = recording */
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/* Bit 1 = playback */
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/* Bit 2 = playback, DLE-ETX seen */
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struct sk_buff_head dtmf_queue; /* queue for dtmf results */
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void *adpcms; /* state for adpcm decompression */
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void *adpcmr; /* state for adpcm compression */
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void *dtmf_state; /* state for dtmf decoder */
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void *silence_state; /* state for silence detection */
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#endif
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#ifdef CONFIG_ISDN_TTY_FAX
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struct T30_s *fax; /* T30 Fax Group 3 data/interface */
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int faxonline; /* Fax-channel status */
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#endif
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atemu emu; /* AT-emulator data */
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spinlock_t readlock;
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} modem_info;
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#define ISDN_MODEM_WINSIZE 8
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/* Description of one ISDN-tty */
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typedef struct _isdn_modem {
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int refcount; /* Number of opens */
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struct tty_driver *tty_modem; /* tty-device */
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struct tty_struct *modem_table[ISDN_MAX_CHANNELS]; /* ?? copied from Orig */
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struct ktermios *modem_termios[ISDN_MAX_CHANNELS];
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struct ktermios *modem_termios_locked[ISDN_MAX_CHANNELS];
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modem_info info[ISDN_MAX_CHANNELS]; /* Private data */
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} isdn_modem_t;
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/*======================= End of ISDN-tty stuff ============================*/
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/*======================== Start of V.110 stuff ============================*/
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#define V110_BUFSIZE 1024
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typedef struct {
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int nbytes; /* 1 Matrixbyte -> nbytes in stream */
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int nbits; /* Number of used bits in streambyte */
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unsigned char key; /* Bitmask in stream eg. 11 (nbits=2) */
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int decodelen; /* Amount of data in decodebuf */
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int SyncInit; /* Number of sync frames to send */
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unsigned char *OnlineFrame; /* Precalculated V110 idle frame */
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unsigned char *OfflineFrame; /* Precalculated V110 sync Frame */
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int framelen; /* Length of frames */
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int skbuser; /* Number of unacked userdata skbs */
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int skbidle; /* Number of unacked idle/sync skbs */
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int introducer; /* Local vars for decoder */
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int dbit;
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unsigned char b;
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int skbres; /* space to reserve in outgoing skb */
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int maxsize; /* maxbufsize of lowlevel driver */
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unsigned char *encodebuf; /* temporary buffer for encoding */
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unsigned char decodebuf[V110_BUFSIZE]; /* incomplete V110 matrices */
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} isdn_v110_stream;
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/*========================= End of V.110 stuff =============================*/
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/*======================= Start of general stuff ===========================*/
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typedef struct {
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char *next;
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char *private;
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} infostruct;
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#define DRV_FLAG_RUNNING 1
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#define DRV_FLAG_REJBUS 2
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#define DRV_FLAG_LOADED 4
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/* Description of hardware-level-driver */
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typedef struct _isdn_driver {
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ulong online; /* Channel-Online flags */
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ulong flags; /* Misc driver Flags */
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int locks; /* Number of locks for this driver */
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int channels; /* Number of channels */
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wait_queue_head_t st_waitq; /* Wait-Queue for status-read's */
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int maxbufsize; /* Maximum Buffersize supported */
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unsigned long pktcount; /* Until now: unused */
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int stavail; /* Chars avail on Status-device */
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isdn_if *interface; /* Interface to driver */
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int *rcverr; /* Error-counters for B-Ch.-receive */
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int *rcvcount; /* Byte-counters for B-Ch.-receive */
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#ifdef CONFIG_ISDN_AUDIO
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unsigned long DLEflag; /* Flags: Insert DLE at next read */
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#endif
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struct sk_buff_head *rpqueue; /* Pointers to start of Rcv-Queue */
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wait_queue_head_t *rcv_waitq; /* Wait-Queues for B-Channel-Reads */
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wait_queue_head_t *snd_waitq; /* Wait-Queue for B-Channel-Send's */
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char msn2eaz[10][ISDN_MSNLEN]; /* Mapping-Table MSN->EAZ */
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} isdn_driver_t;
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/* Main driver-data */
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typedef struct isdn_devt {
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struct module *owner;
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spinlock_t lock;
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unsigned short flags; /* Bitmapped Flags: */
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int drivers; /* Current number of drivers */
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int channels; /* Current number of channels */
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int net_verbose; /* Verbose-Flag */
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int modempoll; /* Flag: tty-read active */
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spinlock_t timerlock;
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int tflags; /* Timer-Flags: */
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/* see ISDN_TIMER_..defines */
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int global_flags;
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infostruct *infochain; /* List of open info-devs. */
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wait_queue_head_t info_waitq; /* Wait-Queue for isdninfo */
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struct timer_list timer; /* Misc.-function Timer */
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int chanmap[ISDN_MAX_CHANNELS]; /* Map minor->device-channel */
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int drvmap[ISDN_MAX_CHANNELS]; /* Map minor->driver-index */
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int usage[ISDN_MAX_CHANNELS]; /* Used by tty/ip/voice */
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char num[ISDN_MAX_CHANNELS][ISDN_MSNLEN];
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/* Remote number of active ch.*/
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int m_idx[ISDN_MAX_CHANNELS]; /* Index for mdm.... */
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isdn_driver_t *drv[ISDN_MAX_DRIVERS]; /* Array of drivers */
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isdn_net_dev *netdev; /* Linked list of net-if's */
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char drvid[ISDN_MAX_DRIVERS][20];/* Driver-ID */
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struct task_struct *profd; /* For iprofd */
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isdn_modem_t mdm; /* tty-driver-data */
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isdn_net_dev *rx_netdev[ISDN_MAX_CHANNELS]; /* rx netdev-pointers */
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isdn_net_dev *st_netdev[ISDN_MAX_CHANNELS]; /* stat netdev-pointers */
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ulong ibytes[ISDN_MAX_CHANNELS]; /* Statistics incoming bytes */
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ulong obytes[ISDN_MAX_CHANNELS]; /* Statistics outgoing bytes */
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int v110emu[ISDN_MAX_CHANNELS]; /* V.110 emulator-mode 0=none */
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atomic_t v110use[ISDN_MAX_CHANNELS]; /* Usage-Semaphore for stream */
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isdn_v110_stream *v110[ISDN_MAX_CHANNELS]; /* V.110 private data */
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struct mutex mtx; /* serialize list access*/
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unsigned long global_features;
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} isdn_dev;
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extern isdn_dev *dev;
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#endif /* __ISDN_H__ */
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