Remove ISDN4BSD (I4B) from HEAD as it is not MPSAFE and

parts relied on the now removed NET_NEEDS_GIANT.
Most of I4B has been disconnected from the build
since July 2007 in HEAD/RELENG_7.

This is what was removed:
- configuration in /etc/isdn
- examples
- man pages
- kernel configuration
- sys/i4b (drivers, layers, include files)
- user space tools
- i4b support from ppp
- further documentation

Discussed with: rwatson, re

1 files changed, 0 insertions, 351 deletions

diff --git a/sys/i4b/layer2/i4b_l2.h b/sys/i4b/layer2/i4b_l2.h
deleted file mode 100644
index cb44c93..0000000
--- a/sys/i4b/layer2/i4b_l2.h
+++ /dev/null
@@ -1,351 +0,0 @@
-/*-
- * Copyright (c) 1997, 2002 Hellmuth Michaelis. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*---------------------------------------------------------------------------
- *
- *	i4b_l2.h - ISDN layer 2 (Q.921) definitions
- *	---------------------------------------------
- *
- * $FreeBSD$
- *
- *      last edit-date: [Sat Mar  9 16:12:20 2002]
- *
- *---------------------------------------------------------------------------*/
-
-#ifndef _I4B_L2_H_
-#define _I4B_L2_H_
-
-typedef struct {
-	int	unit;		/* unit number this entry is for */
-
-	int	Q921_state;	/* state according to Q.921 */
-
-	u_char	last_ril;	/* last reference number from TEI management */
-	u_char	last_rih;
-
-	int	tei_valid;	/* tei is valid flag */
-#define TEI_INVALID	0
-#define TEI_VALID	1	
-	int	tei;		/* tei, if tei flag valid */
-
-	int	ph_active;	/* Layer 1 active flag */
-#define PH_INACTIVE	0	/* layer 1 inactive */
-#define PH_ACTIVEPEND	1	/* already tried to activate */
-#define PH_ACTIVE	2	/* layer 1 active */
-
-	int	T200;		/* Multiframe timeout timer */
-	int	T201;		/* min time between TEI ID check */
-	int	T202;		/* min time between TEI ID Req messages */
-	int	N202;		/* TEI ID Req tx counter */
-	void(*T202func)(void *);/* function to be called when T202 expires */
-	int	T203;		/* max line idle time */
-
-	struct	callout_handle T200_callout;
-	struct	callout_handle T202_callout;
-	struct	callout_handle T203_callout;
-	struct	callout_handle IFQU_callout;	
-
-/*
- * i4b_iframe.c, i4b_i_frame_queued_up(): value of IFQU_DLY
- * some experimentation Gary did showed a minimal value of (hz/20) was
- * possible to let this work, Gary suggested using (hz/10) but i settled
- * down to using (hz/5) for now (-hm).
- */
-#define IFQU_DLY (hz/5)		/* reschedule I-FRAME-QUEUED-UP 0.2 sec */
-
-	int	vr;		/* receive sequence frame counter */
-	int	vs;		/* transmit sequence frame counter */
-	int	va;		/* acknowledge sequence frame counter */
-
-	int	ack_pend;	/* acknowledge pending */
-	int	rej_excpt;	/* reject exception */
-	int	peer_busy;	/* peer receiver busy */
-	int	own_busy;	/* own receiver busy */
-	int	l3initiated;	/* layer 3 initiated */
-
-	struct ifqueue i_queue;	/* queue of outgoing i frames */
-#define IQUEUE_MAXLEN	20
-
-	/* this implementation only supports a k-value of 1 !!! */
-	struct mbuf *ua_frame;	/* last unacked frame */
-	int	ua_num;		/* last unacked frame number */
-#define UA_EMPTY (-1)		/* ua_frame is unused	*/	
-
-	int	rxd_CR;		/* received Command Response bit */
-	int	rxd_PF;		/* received Poll/Final bit */
-	int	rxd_NR;		/* received N(R) field */
-	int	RC;		/* Retry Counter */
-
-	int	iframe_sent;	/* check if i frame acked by another i frame */
-	
-	int (*postfsmfunc)(int);/* function to be called at fsm exit */
-	int	postfsmarg;	/* argument for above function */
-
-	/* statistics */
-
-	lapdstat_t	stat;	/* lapd protocol statistics */
-
-} l2_softc_t;
-
-extern l2_softc_t l2_softc[];
-
-/* Q.912 system parameters (Q.921 03/93 pp 43) */
-
-#define MAX_K_VALUE	1	/* BRI - # of outstanding frames 	*/
-
-#define N200	3		/* max no of retransmissions */
-#define N201DEF	260		/* max no of octetts in information field */
-#define N202DEF	3		/* max no of TEI ID Request message transmissions */
-
-#define T200DEF	(hz*1)		/* default T200 timer value = 1 second	*/
-#define T201DEF	T200DEF		/* default T201 timer value = T200DEF	*/
-#define T202DEF (hz*2)		/* default T202 timer value = 2 seconds */
-#define T203DEF (hz*10)		/* default T203 timer value = 10 seconds*/
-
-/* modulo 128 operations */
-
-#define M128INC(v) 	(v)++;		\
-			if((v)>127)	\
-			{		\
-				v = 0;	\
-			}
-			
-#define M128DEC(v) 	(v)--;		\
-			if((v)<0)	\
-			{		\
-				v = 127;\
-			}
-			
-/* P-bit values */
-
-typedef enum {
-	P0,
-	P1
-} pbit_t;
-
-/* F-bit values */
-
-typedef enum {
-	F0,
-	F1
-} fbit_t;
-
-/* CR-bit values to NT */
-
-typedef enum {
-	CR_CMD_TO_NT,
-	CR_RSP_TO_NT
-} crbit_to_nt_t;
-
-/* CR-bit values from NT */
-
-typedef enum {
-	CR_RSP_FROM_NT,
-	CR_CMD_FROM_NT
-} crbit_from_nt_t;
-
-/* address field - octett 2 */
-
-#define OFF_SAPI	0	/* SAPI offset, HDLC flag is eaten by L1 */
-#define SAPI_CCP	0	/* SAPI = 0 - call control procedures */
-#define SAPI_X25	16	/* SAPI = 16 - X.25 packet procedures */
-#define SAPI_L2M	63	/* SAPI = 63 - Layer 2 management procedures */
-
-/* extract and insert macros for SAPI octett */
-
-#define GETSAPI(octett)		(((octett) >> 2) & 0x3f)
-#define PUTSAPI(sapi,cr,octett)	((octett) = (((sapi << 2) & 0xfc) | ((cr & 0x01) << 1)))
-#define GETCR(octett)		(((octett) >> 1) & 0x01)
-#define GETEA(octett)		((octett) & 0x01)
-
-/* address field - octett 3 */
-
-#define OFF_TEI		1	/* TEI offset */
-#define GETTEI(octett) (((octett) >> 1) & 0x7f)
-#define PUTTEI(tei, octett) ((octett) = ((((tei) << 1) & 0xfe)) | 0x01) 
-#define GROUP_TEI	127	/* broadcast TEI for LME */
-
-/* control field - octett 4 */
-
-#define OFF_CNTL	2	/* 1st byte of control field */
-
-/* S frames */
-
-#define S_FRAME_LEN	4	/* lenght of a U-frame */
-#define OFF_SRCR	2	/* 1st byte of control field,	*/
-				/* R-commands and R-responses	*/
-#define OFF_SNR		3	/* 2nd byte of control field, N(R) and PF */
-#define SPFBIT		0x01	/* poll/final bit mask */
-#define SPBITSET	SPFBIT
-#define SFBITSET	SPFBIT
-#define GETSNR(octett) (((octett) >> 1) & 0x7f)
-#define GETSPF(octett) ((octett) & SPFBIT)
-#define RR		0x01	/* RR and bit 0 set */
-#define RNR		0x05	/* RNR and bit 0 set */
-#define REJ		0x09	/* REJ and bit 0 set */
-
-/* U frames */
-
-#define UI_HDR_LEN	3	/* length of UI header in front of L3 frame */
-#define U_FRAME_LEN	3	/* lenght of a U-frame */
-#define UPFBIT		0x10	/* poll/final bit mask */
-#define UPBITSET	UPFBIT
-#define UFBITSET	UPFBIT
-#define GETUPF(octett) (((octett) >> 4) & 0x01)
-
-/* commands/responses with pf bit set to 0 */
-
-#define SABME		0x6f
-#define	DM		0x0f
-#define UI		0x03
-#define DISC		0x43
-#define UA		0x63
-#define FRMR		0x87
-#define XID		0xaf
-
-/* control field - octett 3 */
-
-#define OFF_MEI		3	/* 2nd byte of control field */
-
-/* control field - octett 4,5 */
-
-#define OFF_RIL		4	/* Ri low byte */
-#define OFF_RIH		5	/* Ri high byte */
-
-/* control field - octett 6 */
-
-#define OFF_MT		6	/* Message Type */
-#define OFF_AI		7	/* Action Indicator  */
-#define GET_TEIFROMAI(octett) (((octett) >> 1) & 0x7f)
-
-/* I frame */
-
-#define I_HDR_LEN	4	/* length of I header in front of L3 frame */
-#define OFF_INS		2	/* transmit sequence number */
-#define OFF_INR		3	/* receive sequence number */
-#define IPFBIT		0x01	/* poll/final bit mask */
-#define IPBITSET	0x01
-#define GETINR(octett)	(((octett) >> 1) & 0x7f)
-#define GETINS(octett)	(((octett) >> 1) & 0x7f)
-#define GETIP(octett)	((octett) & IPFBIT)
-
-/* structure of a TEI management frame */
-
-#define TEI_MGMT_FRM_LEN   8		/* frame length */
-#define TEIM_SAPIO	0x00		/* SAPI, CR, EA */
-#define TEIM_TEIO	0x01		/* TEI, EA */
-#define TEIM_UIO	0x02		/* frame type = UI = 0x03 */
-#define TEIM_MEIO	0x03		/* management entity id = 0x0f */
-#define 	MEI	0x0f	
-#define TEIM_RILO	0x04		/* reference number, low  */
-#define TEIM_RIHO	0x05		/* reference number, high */
-#define TEIM_MTO	0x06		/* message type */
-#define 	MT_ID_REQEST	0x01
-#define 	MT_ID_ASSIGN	0x02
-#define 	MT_ID_DENY	0x03
-#define 	MT_ID_CHK_REQ	0x04
-#define 	MT_ID_CHK_RSP	0x05
-#define 	MT_ID_REMOVE	0x06
-#define 	MT_ID_VERIFY	0x07
-#define TEIM_AIO	0x07		/* action indicator */
-
-/* i4b_mdl_error_ind codes */
-
-enum MDL_ERROR_CODES {
-	MDL_ERR_A,
-	MDL_ERR_B,
-	MDL_ERR_C,
-	MDL_ERR_D,
-	MDL_ERR_E,
-	MDL_ERR_F,
-	MDL_ERR_G,
-	MDL_ERR_H,
-	MDL_ERR_I,
-	MDL_ERR_J,
-	MDL_ERR_K,
-	MDL_ERR_L,
-	MDL_ERR_M,
-	MDL_ERR_N,
-	MDL_ERR_O,
-	MDL_ERR_MAX	
-};
-
-/* forward decl */
-
-extern void i4b_acknowledge_pending ( l2_softc_t *l2sc );
-extern struct mbuf * i4b_build_s_frame ( l2_softc_t *l2sc, crbit_to_nt_t crbit, pbit_t pbit, u_char type );
-extern struct mbuf * i4b_build_u_frame ( l2_softc_t *l2sc, crbit_to_nt_t crbit, pbit_t pbit, u_char type );
-extern void i4b_clear_exception_conditions ( l2_softc_t *l2sc );
-extern int i4b_dl_data_req ( int unit, struct mbuf *m );
-extern int i4b_dl_establish_req ( int unit );
-extern int i4b_dl_release_req ( int unit );
-extern int i4b_dl_unit_data_req ( int unit, struct mbuf *m );
-extern void i4b_enquiry_response ( l2_softc_t *l2sc );
-extern void i4b_establish_data_link ( l2_softc_t *l2sc );
-extern void i4b_invoke_retransmission ( l2_softc_t *l2sc, int nr );
-extern void i4b_i_frame_queued_up ( l2_softc_t *l2sc );
-extern void i4b_l1_activate ( l2_softc_t *l2sc );
-extern int i4b_l2_nr_ok ( int nr, int va, int vs );
-extern void i4b_make_rand_ri ( l2_softc_t *l2sc );
-extern void i4b_mdl_assign_ind ( l2_softc_t *l2sc );
-extern void i4b_mdl_error_ind ( l2_softc_t *l2sc, char *where, int errorcode );
-extern int i4b_mph_status_ind ( int unit, int status, int parm );
-extern void i4b_next_l2state ( l2_softc_t *l2sc, int event );
-extern void i4b_nr_error_recovery ( l2_softc_t *l2sc );
-extern int i4b_ph_activate_ind ( int unit );
-extern int i4b_ph_deactivate_ind ( int unit );
-extern int i4b_ph_data_ind ( int unit, struct mbuf *m );
-extern void i4b_print_frame ( int len, u_char *buf );
-extern char *i4b_print_l2state ( l2_softc_t *l2sc );
-extern void i4b_print_l2var ( l2_softc_t *l2sc );
-extern void i4b_rxd_ack(l2_softc_t *l2sc, int nr);
-extern void i4b_rxd_i_frame ( int unit, struct mbuf *m );
-extern void i4b_rxd_s_frame ( int unit, struct mbuf *m );
-extern void i4b_rxd_u_frame ( int unit, struct mbuf *m );
-extern void i4b_T200_restart ( l2_softc_t *l2sc );
-extern void i4b_T200_start ( l2_softc_t *l2sc );
-extern void i4b_T200_stop ( l2_softc_t *l2sc );
-extern void i4b_T202_start ( l2_softc_t *l2sc );
-extern void i4b_T202_stop ( l2_softc_t *l2sc );
-extern void i4b_T203_restart ( l2_softc_t *l2sc );
-extern void i4b_T203_start ( l2_softc_t *l2sc );
-extern void i4b_T203_stop ( l2_softc_t *l2sc );
-extern void i4b_tei_assign ( l2_softc_t *l2sc );
-extern void i4b_tei_chkresp ( l2_softc_t *l2sc );
-extern void i4b_tei_rxframe ( int unit, struct mbuf *m );
-extern void i4b_tei_verify ( l2_softc_t *l2sc );
-extern void i4b_transmit_enquire ( l2_softc_t *l2sc );
-extern void i4b_tx_disc ( l2_softc_t *l2sc, pbit_t pbit );
-extern void i4b_tx_dm ( l2_softc_t *l2sc, fbit_t fbit );
-extern void i4b_tx_frmr ( l2_softc_t *l2sc, fbit_t fbit );
-extern void i4b_tx_rej_response ( l2_softc_t *l2sc, fbit_t fbit );
-extern void i4b_tx_rnr_command ( l2_softc_t *l2sc, pbit_t pbit );
-extern void i4b_tx_rnr_response ( l2_softc_t *l2sc, fbit_t fbit );
-extern void i4b_tx_rr_command ( l2_softc_t *l2sc, pbit_t pbit );
-extern void i4b_tx_rr_response ( l2_softc_t *l2sc, fbit_t fbit );
-extern void i4b_tx_sabme ( l2_softc_t *l2sc, pbit_t pbit );
-extern void i4b_tx_ua ( l2_softc_t *l2sc, fbit_t fbit );
-
-#endif /* _I4B_L2_H_ */