Clean up the i4b kernel part: remove unmaintained #if(def)s for NetBSD,

OpenBSD and BSD/OS and respective code, remove pre $FreeBSD CVS id's,
remove #if(def)s and respective code for FreeBSD versions < 5 .

48 files changed, 215 insertions, 1756 deletions

diff --git a/sys/i4b/capi/capi_l4if.c b/sys/i4b/capi/capi_l4if.c
index 5460ffb..ff17b6e 100644
--- a/sys/i4b/capi/capi_l4if.c
+++ b/sys/i4b/capi/capi_l4if.c
@@ -239,12 +239,10 @@ capi_ll_attach(capi_softc_t *sc)
 	sc->sc_bchan[i].tx_queue.ifq_maxlen = IFQ_MAXLEN;
 	sc->sc_bchan[i].rx_queue.ifq_maxlen = IFQ_MAXLEN;
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 	if(!mtx_initialized(&sc->sc_bchan[i].tx_queue.ifq_mtx))
 		mtx_init(&sc->sc_bchan[i].tx_queue.ifq_mtx, "i4b_capi_tx", MTX_DEF);
 	if(!mtx_initialized(&sc->sc_bchan[i].rx_queue.ifq_mtx))	
 		mtx_init(&sc->sc_bchan[i].rx_queue.ifq_mtx, "i4b_capi_rx", MTX_DEF);	
-#endif    
 
 	sc->sc_bchan[i].txcount = 0;
 	sc->sc_bchan[i].rxcount = 0;
diff --git a/sys/i4b/capi/iavc/iavc_isa.c b/sys/i4b/capi/iavc/iavc_isa.c
index b4cfaba..84b7cae 100644
--- a/sys/i4b/capi/iavc/iavc_isa.c
+++ b/sys/i4b/capi/iavc/iavc_isa.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001 Hellmuth Michaelis. All rights reserved.
+ * Copyright (c) 2001, 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
@@ -224,10 +224,8 @@ iavc_isa_attach(device_t dev)
 	memset(&sc->sc_txq, 0, sizeof(struct ifqueue));
 	sc->sc_txq.ifq_maxlen = sc->sc_capi.sc_nbch * 4;
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
         if(!mtx_initialized(&sc->sc_txq.ifq_mtx))
 		mtx_init(&sc->sc_txq.ifq_mtx, "i4b_ivac_isa", MTX_DEF);
-#endif
 
 	sc->sc_intr = FALSE;
 	sc->sc_state = IAVC_DOWN;
diff --git a/sys/i4b/capi/iavc/iavc_lli.c b/sys/i4b/capi/iavc/iavc_lli.c
index a8ffb5a..c7455b2 100644
--- a/sys/i4b/capi/iavc/iavc_lli.c
+++ b/sys/i4b/capi/iavc/iavc_lli.c
@@ -256,11 +256,8 @@ int iavc_send(capi_softc_t *capi_sc, struct mbuf *m)
     }
 
     if (_IF_QFULL(&sc->sc_txq)) {
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
+
 	_IF_DROP(&sc->sc_txq);
-#else
-	IF_DROP(&sc->sc_txq);
-#endif
 
 	printf("iavc%d: tx overflow, message dropped\n", sc->sc_unit);
 
diff --git a/sys/i4b/capi/iavc/iavc_pci.c b/sys/i4b/capi/iavc/iavc_pci.c
index 12de906..c22be11 100644
--- a/sys/i4b/capi/iavc/iavc_pci.c
+++ b/sys/i4b/capi/iavc/iavc_pci.c
@@ -235,10 +235,8 @@ iavc_pci_attach(device_t dev)
     memset(&sc->sc_txq, 0, sizeof(struct ifqueue));
     sc->sc_txq.ifq_maxlen = sc->sc_capi.sc_nbch * 4;
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
     if(!mtx_initialized(&sc->sc_txq.ifq_mtx))
 	    mtx_init(&sc->sc_txq.ifq_mtx, "i4b_ivac_pci", MTX_DEF);
-#endif
     
     sc->sc_intr = FALSE;
     sc->sc_state = IAVC_DOWN;
diff --git a/sys/i4b/driver/i4b_ctl.c b/sys/i4b/driver/i4b_ctl.c
index d74fa7e..79f015a 100644
--- a/sys/i4b/driver/i4b_ctl.c
+++ b/sys/i4b/driver/i4b_ctl.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *	i4b_ctl.c - i4b system control port driver
  *	------------------------------------------
  *
- *	$Id: i4b_ctl.c,v 1.37 2000/05/31 08:04:43 hm Exp $
- *
  * $FreeBSD$
  *
- *	last edit-date: [Wed May 31 09:59:01 2000]
+ *	last edit-date: [Sun Mar 17 09:49:24 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -44,43 +42,19 @@
 #if NI4BCTL > 0
 
 #include <sys/param.h>
-
-#if defined(__FreeBSD__) && __FreeBSD__ >= 3
 #include <sys/ioccom.h>
-#else
-#include <sys/ioctl.h>
-#endif
-
 #include <sys/kernel.h>
 #include <sys/systm.h>
 #include <sys/conf.h>
 #include <sys/socket.h>
 #include <net/if.h>
 
-#ifdef __FreeBSD__
-
-#if defined(__FreeBSD__) && __FreeBSD__ == 3
-#include "opt_devfs.h"
-#endif
-
 #ifdef DEVFS
 #include <sys/devfsext.h>
 #endif
 
-#endif /* __FreeBSD__ */
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_ioctl.h>
-#elif defined(__bsdi__)
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#else
-#include <machine/bus.h>
-#include <sys/device.h>
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_l3l4.h>
@@ -89,28 +63,20 @@
 
 static int openflag = 0;
 
-#if BSD > 199306 && defined(__FreeBSD__)
 static	d_open_t	i4bctlopen;
 static	d_close_t	i4bctlclose;
 static	d_ioctl_t	i4bctlioctl;
-
-#ifdef OS_USES_POLL
-static d_poll_t		i4bctlpoll;
-#define POLLFIELD	i4bctlpoll
-#else
-#define POLLFIELD	noselect
-#endif
+static	d_poll_t	i4bctlpoll;
 
 #define CDEV_MAJOR 55
 
-#if defined(__FreeBSD__) && __FreeBSD__ >= 4
 static struct cdevsw i4bctl_cdevsw = {
 	/* open */      i4bctlopen,
 	/* close */     i4bctlclose,
 	/* read */      noread,
 	/* write */     nowrite,
 	/* ioctl */     i4bctlioctl,
-	/* poll */      POLLFIELD,
+	/* poll */      i4bctlpoll,
 	/* mmap */      nommap,
 	/* strategy */  nostrategy,
 	/* name */      "i4bctl",
@@ -119,117 +85,35 @@ static struct cdevsw i4bctl_cdevsw = {
 	/* psize */     nopsize,
 	/* flags */     0,
 };
-#else
-static struct cdevsw i4bctl_cdevsw = 
-	{ i4bctlopen,	i4bctlclose,	noread,		nowrite,
-	  i4bctlioctl,	nostop,		nullreset,	nodevtotty,
-	  POLLFIELD,	nommap,		NULL,	"i4bctl", NULL,	-1 };
-#endif
 
 static void i4bctlattach(void *);
 PSEUDO_SET(i4bctlattach, i4b_i4bctldrv);
 
-#define PDEVSTATIC	static
-#endif /* __FreeBSD__ */
-
-#if defined(__FreeBSD__) && __FreeBSD__ == 3
-#ifdef DEVFS
-static void *devfs_token;
-#endif
-#endif
-
-#ifndef __FreeBSD__
-#define PDEVSTATIC	/* */
-void i4bctlattach __P((void));
-int i4bctlopen __P((dev_t dev, int flag, int fmt, struct thread *td));
-int i4bctlclose __P((dev_t dev, int flag, int fmt, struct thread *td));
-#ifdef __bsdi__
-int i4bctlioctl __P((dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td));
-#else
-int i4bctlioctl __P((dev_t dev, int cmd, caddr_t data, int flag, struct thread *td));
-#endif
-#endif	/* !FreeBSD */
-
-#if BSD > 199306 && defined(__FreeBSD__)
 /*---------------------------------------------------------------------------*
  *	initialization at kernel load time
  *---------------------------------------------------------------------------*/
 static void
 i4bctlinit(void *unused)
 {
-#if defined(__FreeBSD__) && __FreeBSD__ >= 4
 	cdevsw_add(&i4bctl_cdevsw);
-#else
-	dev_t dev = makedev(CDEV_MAJOR, 0);
-	cdevsw_add(&dev, &i4bctl_cdevsw, NULL);
-#endif
 }
 
 SYSINIT(i4bctldev, SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR, &i4bctlinit, NULL);
 
-#endif /* BSD > 199306 && defined(__FreeBSD__) */
-
-#ifdef __bsdi__
-int i4bctlmatch(struct device *parent, struct cfdata *cf, void *aux);
-void dummy_i4bctlattach(struct device*, struct device *, void *);
-
-#define CDEV_MAJOR 64
-
-static struct cfdriver i4bctlcd =
-	{ NULL, "i4bctl", i4bctlmatch, dummy_i4bctlattach, DV_DULL,
-	  sizeof(struct cfdriver) };
-struct devsw i4bctlsw = 
-	{ &i4bctlcd,
-	  i4bctlopen,	i4bctlclose,	noread,		nowrite,
-	  i4bctlioctl,	seltrue,	nommap,		nostrat,
-	  nodump,	nopsize,	0,		nostop
-};
-
-int
-i4bctlmatch(struct device *parent, struct cfdata *cf, void *aux)
-{
-	printf("i4bctlmatch: aux=0x%x\n", aux);
-	return 1;
-}
-void
-dummy_i4bctlattach(struct device *parent, struct device *self, void *aux)
-{
-	printf("dummy_i4bctlattach: aux=0x%x\n", aux);
-}
-#endif /* __bsdi__ */
 /*---------------------------------------------------------------------------*
  *	interface attach routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC void
-#ifdef __FreeBSD__
+static void
 i4bctlattach(void *dummy)
-#else
-i4bctlattach()
-#endif
 {
-#ifndef HACK_NO_PSEUDO_ATTACH_MSG
 	printf("i4bctl: ISDN system control port attached\n");
-#endif
-
-#if defined(__FreeBSD__)
-#if __FreeBSD__ == 3
-
-#ifdef DEVFS
-	devfs_token = devfs_add_devswf(&i4bctl_cdevsw, 0, DV_CHR,
-				       UID_ROOT, GID_WHEEL, 0600,
-				       "i4bctl");
-#endif
-
-#else
 	make_dev(&i4bctl_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "i4bctl");
-#endif
-#endif
 }
 
 /*---------------------------------------------------------------------------*
  *	i4bctlopen - device driver open routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4bctlopen(dev_t dev, int flag, int fmt, struct thread *td)
 {
 	if(minor(dev))
@@ -246,7 +130,7 @@ i4bctlopen(dev_t dev, int flag, int fmt, struct thread *td)
 /*---------------------------------------------------------------------------*
  *	i4bctlclose - device driver close routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4bctlclose(dev_t dev, int flag, int fmt, struct thread *td)
 {
 	openflag = 0;
@@ -256,14 +140,8 @@ i4bctlclose(dev_t dev, int flag, int fmt, struct thread *td)
 /*---------------------------------------------------------------------------*
  *	i4bctlioctl - device driver ioctl routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
-#if defined (__FreeBSD_version) && __FreeBSD_version >= 300003
-i4bctlioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
-#elif defined(__bsdi__)
+static int
 i4bctlioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
-#else
-i4bctlioctl(dev_t dev, int cmd, caddr_t data, int flag, struct thread *td)
-#endif
 {
 #if DO_I4B_DEBUG
 	ctl_debug_t *cdbg;	
@@ -354,8 +232,6 @@ i4bctlioctl(dev_t dev, int cmd, caddr_t data, int flag, struct thread *td)
 #endif DO_I4B_DEBUG
 }
 
-#if defined(__FreeBSD__) && defined(OS_USES_POLL)
-
 /*---------------------------------------------------------------------------*
  *	i4bctlpoll - device driver poll routine
  *---------------------------------------------------------------------------*/
@@ -365,6 +241,4 @@ i4bctlpoll (dev_t dev, int events, struct thread *td)
 	return (ENODEV);
 }
 
-#endif
-
 #endif /* NI4BCTL > 0 */
diff --git a/sys/i4b/driver/i4b_ing.c b/sys/i4b/driver/i4b_ing.c
index 843aff2..fd7d816 100644
--- a/sys/i4b/driver/i4b_ing.c
+++ b/sys/i4b/driver/i4b_ing.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2000 Hellmuth Michaelis. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -27,11 +27,9 @@
  *	i4b_ing.c - isdn4bsd B-channel to netgraph driver
  *	-------------------------------------------------
  *
- *	$Id: i4b_ing.c,v 1.10 2000/04/27 11:35:00 hm Exp $
- *
  * $FreeBSD$
  *
- *	last edit-date: [Thu Nov  9 11:29:12 2000]
+ *	last edit-date: [Sat Mar  9 14:09:53 2002]
  *
  *---------------------------------------------------------------------------*/ 
 
@@ -622,24 +620,17 @@ ng_ing_newhook(node_p node, hook_p hook, const char *name)
  * The response should be in a malloc'd region that the caller can 'free'.
  * A response is not required.
  *---------------------------------------------------------------------------*/
-#if defined(__FreeBSD_version) && __FreeBSD_version >= 500000
 static int
 ng_ing_rcvmsg(node_p node, item_p item, hook_p lasthook)
-#else
-static int
-ng_ing_rcvmsg(node_p node, struct ng_mesg *msg, const char *retaddr,
-		struct ng_mesg **rptr)
-#endif
 {
 	struct ing_softc *sc = NG_NODE_PRIVATE(node);
 
 	struct ng_mesg *resp = NULL;
 	int error = 0;
-#if defined(__FreeBSD_version) && __FreeBSD_version >= 500000
 	struct ng_mesg *msg;
 
 	NGI_GET_MSG(item, msg);
-#endif
+
 	if(msg->header.typecookie == NGM_GENERIC_COOKIE)
 	{
 		switch(msg->header.cmd)
@@ -741,25 +732,19 @@ ng_ing_rcvmsg(node_p node, struct ng_mesg *msg, const char *retaddr,
 /*---------------------------------------------------------------------------*
  * get data from another node and transmit it out on a B-channel
  *---------------------------------------------------------------------------*/
-#if defined(__FreeBSD_version) && __FreeBSD_version >= 500000
 static int
 ng_ing_rcvdata(hook_p hook, item_p item)
-#else
-static int
-ng_ing_rcvdata(hook_p hook, struct mbuf *m, meta_p meta)
-#endif
 {
 	struct ing_softc *sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
 	struct ifqueue  *xmitq_p;
 	int s;
-#if defined(__FreeBSD_version) && __FreeBSD_version >= 500000
 	struct mbuf *m;
 	meta_p meta;
 	
 	NGI_GET_M(item, m);
 	NGI_GET_META(item, meta);
 	NG_FREE_ITEM(item);
-#endif
+
 	if(NG_HOOK_PRIVATE(hook) == NULL)
 	{
 		NG_FREE_M(m);
diff --git a/sys/i4b/driver/i4b_ipr.c b/sys/i4b/driver/i4b_ipr.c
index 8fae998..8023bb4 100644
--- a/sys/i4b/driver/i4b_ipr.c
+++ b/sys/i4b/driver/i4b_ipr.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *	last edit-date: [Wed Oct 24 16:04:53 2001]
+ *	last edit-date: [Sun Mar 17 09:32:58 2002]
  *
  *---------------------------------------------------------------------------*
  *
@@ -60,42 +60,26 @@
 
 #if NI4BIPR > 0
 
-#ifdef __FreeBSD__
 #include "opt_i4b.h"
-#endif
 
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/mbuf.h>
 #include <sys/socket.h>
 #include <sys/errno.h>
-
-#if defined(__FreeBSD__)
 #include <sys/ioccom.h>
 #include <sys/sockio.h>
-#ifdef IPR_VJ
-#include <sys/malloc.h>
-#endif
-#else
-#include <sys/ioctl.h>
-#endif
-
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
 #include <sys/kernel.h>
-
 #include <net/if.h>
 #include <net/if_types.h>
 #include <net/netisr.h>
-
 #include <netinet/in.h>
 #include <netinet/in_systm.h>
 #include <netinet/in_var.h>
 #include <netinet/ip.h>
 
 #ifdef IPR_VJ
+#include <sys/malloc.h>
 #include <net/slcompress.h>       
 #define IPR_COMPRESS IFF_LINK0  /* compress TCP traffic */
 #define IPR_AUTOCOMP IFF_LINK1  /* auto-enable TCP compression */
@@ -114,48 +98,21 @@
 				/* undef to uncompress in the mbuf itself    */
 #endif /* IPR_VJ */
 
-#if defined(__FreeBSD_version) &&  __FreeBSD_version >= 400008
 #include "bpf.h"
-#else
-#include "bpfilter.h"
-#endif
 
 #if NBPFILTER > 0 || NBPF > 0
 #include <sys/time.h>
 #include <net/bpf.h>
 #endif
 
-#ifdef __FreeBSD__
 #include <machine/i4b_ioctl.h>
 #include <machine/i4b_debug.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_l3l4.h>
 
 #include <i4b/layer4/i4b_l4.h>
 
-#ifndef __FreeBSD__
-#include <machine/cpu.h> /* For softnet */
-#endif
-
-#ifdef __FreeBSD__
-#define IPR_FMT	"ipr%d: "
-#define	IPR_ARG(sc)	((sc)->sc_if.if_unit)
-#define	PDEVSTATIC	static
-#elif defined(__bsdi__)
-#define IPR_FMT	"ipr%d: "
-#define	IPR_ARG(sc)	((sc)->sc_if.if_unit)
-#define	PDEVSTATIC	/* not static */
-#else
-#define	IPR_FMT	"%s: "
-#define	IPR_ARG(sc)	((sc)->sc_if.if_xname)
-#define	PDEVSTATIC	/* not static */
-#endif
-
 #define I4BIPRMTU	1500		/* regular MTU */
 #define I4BIPRMAXMTU	2000		/* max MTU */
 #define I4BIPRMINMTU	500		/* min MTU */
@@ -174,16 +131,12 @@ static isdn_link_t *isdn_linktab[NI4BIPR];
 struct ipr_softc {
 	struct ifnet	sc_if;		/* network-visible interface	*/
 	int		sc_state;	/* state of the interface	*/
-
-#ifndef __FreeBSD__
-	int		sc_unit;	/* unit number for Net/OpenBSD	*/
-#endif
-
 	call_desc_t	*sc_cdp;	/* ptr to call descriptor	*/
 	int		sc_updown;	/* soft state of interface	*/
 	struct ifqueue  sc_fastq;	/* interactive traffic		*/
 	int		sc_dialresp;	/* dialresponse			*/
 	int		sc_lastdialresp;/* last dialresponse		*/
+	struct callout_handle	sc_callout;
 	
 #if I4BIPRACCT
 	int		sc_iinb;	/* isdn driver # of inbytes	*/
@@ -195,16 +148,10 @@ struct ipr_softc {
 	int		sc_fn;		/* flag, first null acct	*/
 #endif	
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-	struct callout	sc_callout;
-#endif
-#if defined(__FreeBSD__)
-	struct callout_handle	sc_callout;
-#endif
-
 #ifdef I4BIPRADJFRXP
 	int		sc_first_pkt;	/* flag, first rxd packet	*/
 #endif
+
 #if IPR_LOG
 	int		sc_log_first;	/* log first n packets          */
 #endif
@@ -225,32 +172,11 @@ enum ipr_states {
 	ST_CONNECTED_A,			/* connected to remote		*/
 };
 
-#if defined(__FreeBSD__) || defined(__bsdi__)
-#define	THE_UNIT	sc->sc_if.if_unit
-#else
-#define	THE_UNIT	sc->sc_unit
-#endif
-
-#if defined __FreeBSD__ || defined __NetBSD__
-#  define IOCTL_CMD_T u_long
-#else
-#  define IOCTL_CMD_T int
-#endif
-
-#ifdef __FreeBSD__
-PDEVSTATIC void i4biprattach(void *);
+static void i4biprattach(void *);
 PSEUDO_SET(i4biprattach, i4b_ipr);
-static int i4biprioctl(struct ifnet *ifp, IOCTL_CMD_T cmd, caddr_t data);
-#else
-PDEVSTATIC void i4biprattach __P((void));
 static int i4biprioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
-#endif
 
-#ifdef __bsdi__
-static int iprwatchdog(int unit);
-#else
 static void iprwatchdog(struct ifnet *ifp);
-#endif
 static void ipr_init_linktab(int unit);
 static void ipr_tx_queue_empty(int unit);
 static int i4biproutput(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst, struct rtentry *rtp);
@@ -263,12 +189,8 @@ static void iprclearqueues(struct ipr_softc *sc);
 /*---------------------------------------------------------------------------*
  *	interface attach routine at kernel boot time
  *---------------------------------------------------------------------------*/
-PDEVSTATIC void
-#ifdef __FreeBSD__
+static void
 i4biprattach(void *dummy)
-#else
-i4biprattach()
-#endif
 {
 	struct ipr_softc *sc = ipr_softc;
 	int i;
@@ -286,18 +208,8 @@ i4biprattach()
 		NDBGL4(L4_DIALST, "setting dial state to ST_IDLE");
 
 		sc->sc_state = ST_IDLE;
-		
-#ifdef __FreeBSD__		
-		sc->sc_if.if_name = "ipr";
-		sc->sc_if.if_unit = i;
-#elif defined(__bsdi__)
 		sc->sc_if.if_name = "ipr";
 		sc->sc_if.if_unit = i;
-#else
-		sprintf(sc->sc_if.if_xname, "ipr%d", i);
-		sc->sc_if.if_softc = sc;
-		sc->sc_unit = i;
-#endif
 
 #ifdef	IPR_VJ
 		sc->sc_if.if_flags = IFF_POINTOPOINT | IFF_SIMPLEX | IPR_AUTOCOMP;
@@ -305,10 +217,6 @@ i4biprattach()
 		sc->sc_if.if_flags = IFF_POINTOPOINT | IFF_SIMPLEX;
 #endif
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-		callout_init(&sc->sc_callout);
-#endif
-
 		sc->sc_if.if_mtu = I4BIPRMTU;
 		sc->sc_if.if_type = IFT_ISDNBASIC;
 		sc->sc_if.if_ioctl = i4biprioctl;
@@ -317,10 +225,9 @@ i4biprattach()
 		sc->sc_if.if_snd.ifq_maxlen = I4BIPRMAXQLEN;
 		sc->sc_fastq.ifq_maxlen = I4BIPRMAXQLEN;
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 		if(!mtx_initialized(&sc->sc_fastq.ifq_mtx))
 			mtx_init(&sc->sc_fastq.ifq_mtx, "i4b_ipr_fastq", MTX_DEF);
-#endif		
+
 		sc->sc_if.if_ipackets = 0;
 		sc->sc_if.if_ierrors = 0;
 		sc->sc_if.if_opackets = 0;
@@ -344,16 +251,13 @@ i4biprattach()
 		sc->sc_loutb = 0;
 		sc->sc_fn = 1;
 #endif
+
 #if IPR_LOG
 		sc->sc_log_first = IPR_LOG;
 #endif
 
-#ifdef	IPR_VJ
-#ifdef __FreeBSD__
+#ifdef IPR_VJ
 		sl_compress_init(&sc->sc_compr, -1);
-#else
-		sl_compress_init(&sc->sc_compr);
-#endif
 
 #ifdef IPR_VJ_USEBUFFER
 		if(!((sc->sc_cbuf =
@@ -370,11 +274,7 @@ i4biprattach()
 		if_attach(&sc->sc_if);
 
 #if NBPFILTER > 0 || NBPF > 0
-#ifdef __FreeBSD__
 		bpfattach(&sc->sc_if, DLT_NULL, sizeof(u_int));
-#else
-		bpfattach(&sc->sc_if.if_bpf, &sc->sc_if, DLT_NULL, sizeof(u_int));
-#endif
 #endif		
 	}
 }
@@ -394,19 +294,14 @@ i4biproutput(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst,
 	
 	s = SPLI4B();
 
-#if defined(__FreeBSD__) || defined(__bsdi__)
 	unit = ifp->if_unit;
 	sc = &ipr_softc[unit];
-#else
-	sc = ifp->if_softc;
-	unit = sc->sc_unit;
-#endif
 
 	/* check for IP */
 	
 	if(dst->sa_family != AF_INET)
 	{
-		printf(IPR_FMT "af%d not supported\n", IPR_ARG(sc), dst->sa_family);
+		printf("ipr%d: af%d not supported\n", (sc)->sc_if.if_unit, dst->sa_family);
 		m_freem(m);
 		splx(s);
 		sc->sc_if.if_noproto++;
@@ -498,7 +393,6 @@ i4biproutput(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst,
 
 	/* check for space in choosen send queue */
 	
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 	if(! IF_HANDOFF(ifq, m, NULL))
 	{
 		NDBGL4(L4_IPRDBG, "ipr%d: send queue full!", unit);
@@ -506,17 +400,6 @@ i4biproutput(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst,
 		sc->sc_if.if_oerrors++;
 		return(ENOBUFS);
 	}
-#else
-        if(IF_QFULL(ifq))
-        {
-		NDBGL4(L4_IPRDBG, "ipr%d: send queue full!", unit);
-                IF_DROP(ifq);
-                m_freem(m);
-                splx(s);
-                sc->sc_if.if_oerrors++;
-                return(ENOBUFS);
-        }	
-#endif
 	
 	NDBGL4(L4_IPRDBG, "ipr%d: add packet to send queue!", unit);
 	
@@ -530,20 +413,10 @@ i4biproutput(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst,
 /*---------------------------------------------------------------------------*
  *	process ioctl
  *---------------------------------------------------------------------------*/
-#ifdef __FreeBSD__
-static int
-i4biprioctl(struct ifnet *ifp, IOCTL_CMD_T cmd, caddr_t data)
-#else
 static int
 i4biprioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
-#endif
 {
-#if defined(__FreeBSD__) || defined(__bsdi__)
 	struct ipr_softc *sc = &ipr_softc[ifp->if_unit];
-#else
-	struct ipr_softc *sc = ifp->if_softc;
-#endif
-
 	struct ifreq *ifr = (struct ifreq *)data;
 	struct ifaddr *ifa = (struct ifaddr *)data;
 	int s;
@@ -569,11 +442,7 @@ i4biprioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 				if(sc->sc_if.if_flags & IFF_RUNNING)
 				{
 					/* disconnect ISDN line */
-#if defined(__FreeBSD__) || defined(__bsdi__)
 					i4b_l4_drvrdisc(BDRV_IPR, ifp->if_unit);
-#else
-					i4b_l4_drvrdisc(BDRV_IPR, sc->sc_unit);
-#endif
 					sc->sc_if.if_flags &= ~IFF_RUNNING;
 				}
 
@@ -592,7 +461,6 @@ i4biprioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 			microtime(&sc->sc_if.if_lastchange);
 			break;
 
-#if !defined(__OpenBSD__)			
 		case SIOCSIFMTU:	/* set interface MTU */
 			if(ifr->ifr_mtu > I4BIPRMAXMTU)
 				error = EINVAL;
@@ -604,8 +472,6 @@ i4biprioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 				microtime(&sc->sc_if.if_lastchange);
 			}
 			break;
-#endif /* __OPENBSD__ */
-
 #if 0
 	/* not needed for FreeBSD, done in sl_compress_init() (-hm) */
 	
@@ -617,24 +483,19 @@ i4biprioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 			{
 			struct proc *p = curproc;	/* XXX */
 
-#if defined(__FreeBSD_version) && __FreeBSD_version >= 400005
 			if((error = suser(p)) != 0)
-#else
-			if((error = suser(p->p_ucred, &p->p_acflag)) != 0)
-#endif
 				return (error);
 		        sl_compress_setup(sc->sc_compr, *(int *)data);
 			}
 			break;
 #endif
-#endif
+#endif /* #if 0 */
+
 		default:
 			error = EINVAL;
 			break;
 	}
-
 	splx(s);
-
 	return(error);
 }
 
@@ -646,61 +507,21 @@ iprclearqueues(struct ipr_softc *sc)
 {
 	int x;
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 	x = splimp();
 	IF_DRAIN(&sc->sc_fastq);
 	IF_DRAIN(&sc->sc_if.if_snd);
 	splx(x);
-#else
-        struct mbuf *m;
-
-	for(;;)
-	{
-		x = splimp();
-		IF_DEQUEUE(&sc->sc_fastq, m);
-		splx(x);
-		if(m)
-			m_freem(m);
-		else
-			break;
-	}
-
-	for(;;)
-        {
-		x = splimp();
-		IF_DEQUEUE(&sc->sc_if.if_snd, m);
-		splx(x);
-		if(m)
-			m_freem(m);
-		else
-			break;
-	}
-#endif
 }
         
 #if I4BIPRACCT
 /*---------------------------------------------------------------------------*
  *	watchdog routine
  *---------------------------------------------------------------------------*/
-#ifdef __bsdi__
-static int
-iprwatchdog(int unit)
-{
-#else
 static void
 iprwatchdog(struct ifnet *ifp)
 {
-#endif
-#ifdef __FreeBSD__
 	int unit = ifp->if_unit;
 	struct ipr_softc *sc = &ipr_softc[unit];
-#elif defined(__bsdi__)
-	struct ipr_softc *sc = &ipr_softc[unit];
-	struct ifnet *ifp = &ipr_softc[unit].sc_if;
-#else
-	struct ipr_softc *sc = ifp->if_softc;
-	int unit = sc->sc_unit;
-#endif
 	bchan_statistics_t bs;
 	
 	/* get # of bytes in and out from the HSCX driver */ 
@@ -728,9 +549,6 @@ iprwatchdog(struct ifnet *ifp)
 			 sc->sc_ioutb, sc->sc_iinb, ro, ri, sc->sc_outb, sc->sc_inb);
  	}
 	sc->sc_if.if_timer = I4BIPRACCTINTVL; 	
-#ifdef __bsdi__
-	return 0;
-#endif
 }
 #endif /* I4BIPRACCT */
 
@@ -749,7 +567,7 @@ i4bipr_connect_startio(struct ipr_softc *sc)
 	if(sc->sc_state == ST_CONNECTED_W)
 	{
 		sc->sc_state = ST_CONNECTED_A;
-		ipr_tx_queue_empty(THE_UNIT);
+		ipr_tx_queue_empty(sc->sc_if.if_unit);
 	}
 
 	splx(s);
@@ -847,6 +665,7 @@ ipr_disconnect(int unit, void *cdp)
 #if I4BIPRACCT
 	sc->sc_if.if_timer = 0;
 #endif
+
 #if IPR_LOG
 	/* show next IPR_LOG packets again */
 	sc->sc_log_first = IPR_LOG;
@@ -907,6 +726,7 @@ ipr_rx_data_rdy(int unit)
 {
 	register struct ipr_softc *sc = &ipr_softc[unit];
 	register struct mbuf *m;
+
 #ifdef IPR_VJ
 #ifdef IPR_VJ_USEBUFFER
 	u_char *cp = sc->sc_cbuf;
@@ -1047,6 +867,7 @@ error:
 	/* NB. do the accounting after decompression!		*/
 	sc->sc_inb += m->m_pkthdr.len;
 #endif
+
 #if IPR_LOG
 	if(sc->sc_log_first > 0)
 	{
@@ -1064,16 +885,10 @@ error:
 		mm.m_next = m;
 		mm.m_len = 4;
 		mm.m_data = (char *)&af;
-
-#ifdef __FreeBSD__
 		bpf_mtap(&sc->sc_if, &mm);
-#else
-		bpf_mtap(sc->sc_if.if_bpf, &mm);
-#endif
 	}
 #endif /* NBPFILTER > 0  || NBPF > 0 */
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 	if(! IF_HANDOFF(&ipintrq, m, NULL))
 	{
 		NDBGL4(L4_IPRDBG, "ipr%d: ipintrq full!", unit);
@@ -1084,21 +899,6 @@ error:
 	{
 		schednetisr(NETISR_IP);
 	}
-#else
-        if(IF_QFULL(&ipintrq))
-        {
-		NDBGL4(L4_IPRDBG, "ipr%d: ipintrq full!", unit);
-                IF_DROP(&ipintrq);
-                sc->sc_if.if_ierrors++;
-                sc->sc_if.if_iqdrops++;
-                m_freem(m);
-        }
-        else
-        {
-                IF_ENQUEUE(&ipintrq, m);
-                schednetisr(NETISR_IP);
-        }
-#endif	
 }
 
 /*---------------------------------------------------------------------------*
@@ -1145,12 +945,7 @@ ipr_tx_queue_empty(int unit)
 			mm.m_next = m;
 			mm.m_len = 4;
 			mm.m_data = (char *)&af;
-	
-#ifdef __FreeBSD__
 			bpf_mtap(&sc->sc_if, &mm);
-#else
-			bpf_mtap(sc->sc_if.if_bpf, &mm);
-#endif
 		}
 #endif /* NBPFILTER */
 	
@@ -1158,7 +953,7 @@ ipr_tx_queue_empty(int unit)
 		sc->sc_outb += m->m_pkthdr.len;	/* size before compression */
 #endif
 
-#ifdef	IPR_VJ	
+#ifdef IPR_VJ	
 		if((ip = mtod(m, struct ip *))->ip_p == IPPROTO_TCP)
 		{
 			if(sc->sc_if.if_flags & IPR_COMPRESS)
diff --git a/sys/i4b/driver/i4b_isppp.c b/sys/i4b/driver/i4b_isppp.c
index 71c5acb..5a922e3 100644
--- a/sys/i4b/driver/i4b_isppp.c
+++ b/sys/i4b/driver/i4b_isppp.c
@@ -1,7 +1,7 @@
 /*
  *   Copyright (c) 1997 Joerg Wunsch. All rights reserved.
  *
- *   Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ *   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
@@ -34,24 +34,17 @@
  *	the "cx" driver for Cronyx's HDLC-in-hardware device).  This driver
  *	is only the glue between sppp and i4b.
  *
- *	$Id: i4b_isppp.c,v 1.44 2000/08/31 07:07:26 hm Exp $
- *
  * $FreeBSD$
  *
- *	last edit-date: [Thu Aug 31 09:02:27 2000]
+ *	last edit-date: [Sat Mar  9 14:09:27 2002]
  *
  *---------------------------------------------------------------------------*/
 
-
-#ifndef __NetBSD__
-#endif
 #include "i4bisppp.h"
 
-#ifndef __NetBSD__
 #if NI4BISPPP == 0
 # error "You need to define `device sppp <N>' with options ISPPP"
 #endif
-#endif
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -66,65 +59,33 @@
 #include <net/if_types.h>
 #include <net/if_sppp.h>
 
-
-#if defined(__FreeBSD_version) &&  __FreeBSD_version >= 400008                
 #include "bpf.h"     
-#else
-#include "bpfilter.h"
-#endif
+
 #if NBPFILTER > 0 || NBPF > 0
 #include <sys/time.h>
 #include <net/bpf.h>
 #endif
 
-#ifdef __FreeBSD__
 #include <machine/i4b_ioctl.h>
 #include <machine/i4b_debug.h>
-#else
-#include <i4b/i4b_ioctl.h>
-#include <i4b/i4b_cause.h>
-#include <i4b/i4b_debug.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_l3l4.h>
 
 #include <i4b/layer4/i4b_l4.h>
 
-#ifdef __FreeBSD__
 #define ISPPP_FMT	"isp%d: "
 #define	ISPPP_ARG(sc)	((sc)->sc_if.if_unit)
 #define	PDEVSTATIC	static
 #define IFP2UNIT(ifp)	(ifp)->if_unit
 		
-# if __FreeBSD_version >= 300001
 #  define CALLOUT_INIT(chan)		callout_handle_init(chan)
 #  define TIMEOUT(fun, arg, chan, tick)	chan = timeout(fun, arg, tick)
 #  define UNTIMEOUT(fun, arg, chan)	untimeout(fun, arg, chan)
 #  define IOCTL_CMD_T u_long
-# else
-#  define CALLOUT_INIT(chan)		do {} while(0)
-#  define TIMEOUT(fun, arg, chan, tick)	timeout(fun, arg, tick)
-#  define UNTIMEOUT(fun, arg, chan)	untimeout(fun, arg)
-#  define IOCTL_CMD_T int
-# endif
-
-#elif defined __NetBSD__ || defined __OpenBSD__
-#define	ISPPP_FMT	"%s: "
-#define	ISPPP_ARG(sc)	((sc)->sc_if.if_xname)
-#define	PDEVSTATIC	/* not static */
-#define IOCTL_CMD_T	u_long
-#define IFP2UNIT(ifp)	((struct i4bisppp_softc *)ifp->if_softc)->sc_unit
-#else
-# error "What system are you using?"
-#endif
 
-#ifdef __FreeBSD__
 PDEVSTATIC void i4bispppattach(void *);
 PSEUDO_SET(i4bispppattach, i4b_isppp);
-#else
-PDEVSTATIC void i4bispppattach(void);
-#endif
 
 #define I4BISPPPACCT		1	/* enable accounting messages */
 #define	I4BISPPPACCTINTVL	2	/* accounting msg interval in secs */
@@ -143,14 +104,10 @@ struct i4bisppp_softc {
 		struct ifnet scu_if;
 		struct sppp scu_sp;
 	} sc_if_un;
+
 #define sc_if sc_if_un.scu_if
 
 	int	sc_state;	/* state of the interface	*/
-
-#ifndef __FreeBSD__
-	int	sc_unit;	/* unit number for Net/OpenBSD	*/
-#endif
-
 	call_desc_t *sc_cdp;	/* ptr to call descriptor	*/
 
 #ifdef I4BISPPPACCT
@@ -163,10 +120,7 @@ struct i4bisppp_softc {
 	int sc_fn;		/* flag, first null acct	*/
 #endif
 
-#if defined(__FreeBSD_version) && __FreeBSD_version >= 300001
 	struct callout_handle sc_ch;
-#endif
-
 } i4bisppp_softc[NI4BISPPP];
 
 static void	i4bisppp_init_linktab(int unit);
@@ -208,48 +162,25 @@ enum i4bisppp_states {
  *	interface attach routine at kernel boot time
  *---------------------------------------------------------------------------*/
 PDEVSTATIC void
-#ifdef __FreeBSD__
 i4bispppattach(void *dummy)
-#else
-i4bispppattach()
-#endif
 {
 	struct i4bisppp_softc *sc = i4bisppp_softc;
 	int i;
 
-#ifndef HACK_NO_PSEUDO_ATTACH_MSG
 #ifdef SPPP_VJ
 	printf("i4bisppp: %d ISDN SyncPPP device(s) attached (VJ header compression)\n", NI4BISPPP);
 #else
 	printf("i4bisppp: %d ISDN SyncPPP device(s) attached\n", NI4BISPPP);
 #endif
-#endif
 
 	for(i = 0; i < NI4BISPPP; sc++, i++) {
 		i4bisppp_init_linktab(i);
 		
 		sc->sc_if.if_softc = sc;
-
-#ifdef __FreeBSD__		
 		sc->sc_if.if_name = "isp";
-#if defined(__FreeBSD_version) && __FreeBSD_version < 300001
-		sc->sc_if.if_next = NULL;
-#endif
 		sc->sc_if.if_unit = i;
-#else
-		sprintf(sc->sc_if.if_xname, "isp%d", i);
-		sc->sc_unit = i;
-#endif
-
 		sc->sc_if.if_mtu = PP_MTU;
-
-#ifdef __NetBSD__
-		sc->sc_if.if_flags = IFF_SIMPLEX | IFF_POINTOPOINT |
-					IFF_MULTICAST;
-#else
 		sc->sc_if.if_flags = IFF_SIMPLEX | IFF_POINTOPOINT;
-#endif
-
 		sc->sc_if.if_type = IFT_ISDNBASIC;
 		sc->sc_state = ST_IDLE;
 
@@ -294,21 +225,17 @@ i4bispppattach()
 		sc->sc_if_un.scu_sp.pp_chg = i4bisppp_state_changed;
 
 		sppp_attach(&sc->sc_if);
-#if defined(__FreeBSD_version) && ((__FreeBSD_version >= 500009) || (410000 <= __FreeBSD_version && __FreeBSD_version < 500000))
-		/* do not call bpfattach in ether_ifattach */
+
+#if 0 /* ??? -hm */
 		ether_ifattach(&sc->sc_if, 0);
 #else
 		if_attach(&sc->sc_if);
 #endif
 
+		CALLOUT_INIT(&sc->sc_ch);
+		
 #if NBPFILTER > 0 || NBPF > 0
-#ifdef __FreeBSD__
 		bpfattach(&sc->sc_if, DLT_PPP, PPP_HDRLEN);
-		CALLOUT_INIT(&sc->sc_ch);
-#endif /* __FreeBSD__ */
-#ifdef __NetBSD__
-		bpfattach(&sc->sc_if.if_bpf, &sc->sc_if, DLT_PPP, sizeof(u_int));
-#endif
 #endif		
 	}
 }
@@ -373,16 +300,9 @@ i4bisppp_start(struct ifnet *ifp)
 	{
 
 #if NBPFILTER > 0 || NBPF > 0
-#ifdef __FreeBSD__
 		if (ifp->if_bpf)
 			bpf_mtap(ifp, m);
-#endif /* __FreeBSD__ */
-
-#ifdef __NetBSD__
-		if (ifp->if_bpf)
-			bpf_mtap(ifp->if_bpf, m);
-#endif
-#endif /* NBPFILTER > 0 || NBPF > 0 */
+#endif 
 
 		microtime(&ifp->if_lastchange);
 
@@ -559,9 +479,9 @@ i4bisppp_connect(int unit, void *cdp)
 #endif
 
 	sp->pp_up(sp);		/* tell PPP we are ready */
-#ifndef __NetBSD__
+
 	sp->pp_last_sent = sp->pp_last_recv = SECOND;
-#endif
+
 	splx(s);
 }
 
@@ -674,19 +594,10 @@ i4bisppp_rx_data_rdy(int unit)
 #endif
 
 #if NBPFILTER > 0 || NBPF > 0
-
-#ifdef __FreeBSD__	
 	if(sc->sc_if.if_bpf)
 		bpf_mtap(&sc->sc_if, m);
-#endif /* __FreeBSD__ */
-
-#ifdef __NetBSD__
-	if(sc->sc_if.if_bpf)
-		bpf_mtap(sc->sc_if.if_bpf, m);
 #endif
 
-#endif /* NBPFILTER > 0  || NBPF > 0 */
-
 	s = splimp();
 
 	sppp_input(&sc->sc_if, m);
@@ -716,15 +627,11 @@ i4bisppp_tx_queue_empty(int unit)
 time_t
 i4bisppp_idletime(int unit)
 {
-#ifdef __NetBSD__
-       return(i4bisppp_softc[unit].sc_cdp->last_active_time);
-#else
 	struct sppp *sp;
 	sp = (struct sppp *) &i4bisppp_softc[unit];
 
 	return((sp->pp_last_recv < sp->pp_last_sent) ?
 			sp->pp_last_sent : sp->pp_last_recv);
-#endif
 }
 
 /*---------------------------------------------------------------------------*
diff --git a/sys/i4b/driver/i4b_rbch.c b/sys/i4b/driver/i4b_rbch.c
index d701ec9..41c5536 100644
--- a/sys/i4b/driver/i4b_rbch.c
+++ b/sys/i4b/driver/i4b_rbch.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *	last edit-date: [Fri Jan 12 14:32:16 2001]
+ *	last edit-date: [Sun Mar 17 09:51:03 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -39,45 +39,23 @@
 
 #include <sys/param.h>
 #include <sys/systm.h>
-
 #include <sys/conf.h>
 #include <sys/uio.h>
 #include <sys/kernel.h>
 #include <sys/mbuf.h>
 #include <sys/socket.h>
-#include <net/if.h>
+#include <sys/filio.h>
 #include <sys/tty.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#if defined (__NetBSD__) || defined (__OpenBSD__)
-extern cc_t ttydefchars;
-#define termioschars(t) memcpy((t)->c_cc, &ttydefchars, sizeof((t)->c_cc))
-#endif
-
-#ifdef __FreeBSD__
+#include <net/if.h>
 
 #ifdef DEVFS
 #include <sys/devfsext.h>
 #endif
 
-#endif /* __FreeBSD__ */
-
-#ifdef __NetBSD__
-#include <sys/filio.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_ioctl.h>
 #include <machine/i4b_rbch_ioctl.h>
 #include <machine/i4b_debug.h>
-#else
-#include <i4b/i4b_ioctl.h>
-#include <i4b/i4b_rbch_ioctl.h>
-#include <i4b/i4b_debug.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_mbuf.h>
@@ -85,21 +63,8 @@ extern cc_t ttydefchars;
 
 #include <i4b/layer4/i4b_l4.h>
 
-#ifdef __bsdi__
-#include <sys/device.h>
-#endif
-
-#ifdef OS_USES_POLL
 #include <sys/ioccom.h>
 #include <sys/poll.h>
-#else
-#include <sys/fcntl.h>
-#include <sys/ioctl.h>
-#endif
-
-#if defined(__FreeBSD__)
-#include <sys/filio.h>
-#endif
 
 static drvr_link_t rbch_drvr_linktab[NI4BRBCH];
 static isdn_link_t *isdn_linktab[NI4BRBCH];
@@ -108,7 +73,6 @@ static isdn_link_t *isdn_linktab[NI4BRBCH];
 #define	I4BRBCHACCTINTVL	2	/* accounting msg interval in secs */
 
 static struct rbch_softc {
-
 	int sc_unit;			/* unit number 		*/
 
 	int sc_devstate;		/* state of driver	*/
@@ -120,9 +84,7 @@ static struct rbch_softc {
 #define ST_NOBLOCK	0x10
 
 	int sc_bprot;			/* B-ch protocol used	*/
-
 	call_desc_t *sc_cd;		/* Call Descriptor */
-
 	struct termios it_in;
 
 	struct ifqueue sc_hdlcq;	/* hdlc read queue	*/
@@ -131,13 +93,7 @@ static struct rbch_softc {
 	struct selinfo selp;		/* select / poll	*/
 
 #if I4BRBCHACCT
-#if defined(__FreeBSD__)
 	struct callout_handle sc_callout;
-#endif	
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-	struct callout	sc_callout;
-#endif
-
 	int		sc_iinb;	/* isdn driver # of inbytes	*/
 	int		sc_ioutb;	/* isdn driver # of outbytes	*/
 	int		sc_linb;	/* last # of bytes rx'd		*/
@@ -153,39 +109,12 @@ static void rbch_disconnect(int unit, void *cdp);
 static void rbch_init_linktab(int unit);
 static void rbch_clrq(int unit);
 
-#ifndef __FreeBSD__
-#define PDEVSTATIC	/* - not static - */
-#define IOCTL_CMD_T	u_long
-void i4brbchattach __P((void));
-int i4brbchopen __P((dev_t dev, int flag, int fmt, struct thread *td));
-int i4brbchclose __P((dev_t dev, int flag, int fmt, struct thread *td));
-int i4brbchread __P((dev_t dev, struct uio *uio, int ioflag));
-int i4brbchwrite __P((dev_t dev, struct uio *uio, int ioflag));
-int i4brbchioctl __P((dev_t dev, IOCTL_CMD_T cmd, caddr_t arg, int flag, struct thread *td));
-#ifdef OS_USES_POLL
-int i4brbchpoll __P((dev_t dev, int events, struct thread *td));
-#else
-PDEVSTATIC int i4brbchselect __P((dev_t dev, int rw, struct thread *td));
-#endif
-#endif
-
-#if BSD > 199306 && defined(__FreeBSD__)
-#define PDEVSTATIC	static
-#define IOCTL_CMD_T	u_long
-
-PDEVSTATIC d_open_t i4brbchopen;
-PDEVSTATIC d_close_t i4brbchclose;
-PDEVSTATIC d_read_t i4brbchread;
-PDEVSTATIC d_read_t i4brbchwrite;
-PDEVSTATIC d_ioctl_t i4brbchioctl;
-
-#ifdef OS_USES_POLL
-PDEVSTATIC d_poll_t i4brbchpoll;
-#define POLLFIELD	i4brbchpoll
-#else
-PDEVSTATIC d_select_t i4brbchselect;
-#define POLLFIELD	i4brbchselect
-#endif
+static 	d_open_t	i4brbchopen;
+static 	d_close_t	i4brbchclose;
+static 	d_read_t	i4brbchread;
+static 	d_read_t	i4brbchwrite;
+static 	d_ioctl_t	i4brbchioctl;
+static 	d_poll_t	i4brbchpoll;
 
 #define CDEV_MAJOR 57
 
@@ -195,7 +124,7 @@ static struct cdevsw i4brbch_cdevsw = {
 	/* read */      i4brbchread,
 	/* write */     i4brbchwrite,
 	/* ioctl */     i4brbchioctl,
-	/* poll */      POLLFIELD,
+	/* poll */      i4brbchpoll,
 	/* mmap */      nommap,
 	/* strategy */  nostrategy,
 	/* name */      "i4brbch",
@@ -224,76 +153,32 @@ i4brbchinit(void *unused)
 SYSINIT(i4brbchdev, SI_SUB_DRIVERS,
 	SI_ORDER_MIDDLE+CDEV_MAJOR, &i4brbchinit, NULL);
 
-#endif /* BSD > 199306 && defined(__FreeBSD__) */
-
-#ifdef __bsdi__
-int i4brbchmatch(struct device *parent, struct cfdata *cf, void *aux);
-void dummy_i4brbchattach(struct device*, struct device *, void *);
-
-#define CDEV_MAJOR 61
-
-static struct cfdriver i4brbchcd =
-	{ NULL, "i4brbch", i4brbchmatch, dummy_i4brbchattach, DV_DULL,
-	  sizeof(struct cfdriver) };
-struct devsw i4brbchsw = 
-	{ &i4brbchcd,
-	  i4brbchopen,	i4brbchclose,	i4brbchread,	i4brbchwrite,
-	  i4brbchioctl,	seltrue,	nommap,		nostrat,
-	  nodump,	nopsize,	0,		nostop
-};
-
-int
-i4brbchmatch(struct device *parent, struct cfdata *cf, void *aux)
-{
-	printf("i4brbchmatch: aux=0x%x\n", aux);
-	return 1;
-}
-void
-dummy_i4brbchattach(struct device *parent, struct device *self, void *aux)
-{
-	printf("dummy_i4brbchattach: aux=0x%x\n", aux);
-}
-#endif /* __bsdi__ */
-
 /*---------------------------------------------------------------------------*
  *	interface attach routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC void
-#ifdef __FreeBSD__
+static void
 i4brbchattach(void *dummy)
-#else
-i4brbchattach()
-#endif
 {
 	int i;
 
-#ifndef HACK_NO_PSEUDO_ATTACH_MSG
 	printf("i4brbch: %d raw B channel access device(s) attached\n", NI4BRBCH);
-#endif
 	
 	for(i=0; i < NI4BRBCH; i++)
 	{
-#if defined(__FreeBSD__)
 		make_dev(&i4brbch_cdevsw, i,
 			UID_ROOT, GID_WHEEL, 0600, "i4brbch%d", i);
-#endif
 
 #if I4BRBCHACCT
-#if defined(__FreeBSD__)
 		callout_handle_init(&rbch_softc[i].sc_callout);
-#endif
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-		callout_init(&rbch_softc[i].sc_callout);
-#endif
 		rbch_softc[i].sc_fn = 1;
 #endif
 		rbch_softc[i].sc_unit = i;
 		rbch_softc[i].sc_devstate = ST_IDLE;
 		rbch_softc[i].sc_hdlcq.ifq_maxlen = I4BRBCHMAXQLEN;
-#if defined(__FreeBSD__) && __FreeBSD__ > 4
+
 		if(!mtx_initialized(&rbch_softc[i].sc_hdlcq.ifq_mtx))
 			mtx_init(&rbch_softc[i].sc_hdlcq.ifq_mtx, "i4b_rbch", MTX_DEF);
-#endif		
+
 		rbch_softc[i].it_in.c_ispeed = rbch_softc[i].it_in.c_ospeed = 64000;
 		termioschars(&rbch_softc[i].it_in);
 		rbch_init_linktab(i);
@@ -303,7 +188,7 @@ i4brbchattach()
 /*---------------------------------------------------------------------------*
  *	open rbch device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4brbchopen(dev_t dev, int flag, int fmt, struct thread *td)
 {
 	int unit = minor(dev);
@@ -328,7 +213,7 @@ i4brbchopen(dev_t dev, int flag, int fmt, struct thread *td)
 /*---------------------------------------------------------------------------*
  *	close rbch device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4brbchclose(dev_t dev, int flag, int fmt, struct thread *td)
 {
 	int unit = minor(dev);
@@ -349,7 +234,7 @@ i4brbchclose(dev_t dev, int flag, int fmt, struct thread *td)
 /*---------------------------------------------------------------------------*
  *	read from rbch device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4brbchread(dev_t dev, struct uio *uio, int ioflag)
 {
 	struct mbuf *m;
@@ -451,7 +336,7 @@ i4brbchread(dev_t dev, struct uio *uio, int ioflag)
 /*---------------------------------------------------------------------------*
  *	write to rbch device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4brbchwrite(dev_t dev, struct uio * uio, int ioflag)
 {
 	struct mbuf *m;
@@ -556,14 +441,8 @@ i4brbchwrite(dev_t dev, struct uio * uio, int ioflag)
 		
 		error = uiomove(m->m_data, m->m_len, uio);
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4		
 		(void) IF_HANDOFF(isdn_linktab[unit]->tx_queue, m, NULL);
-#else
-		if(IF_QFULL(isdn_linktab[unit]->tx_queue))
-			m_freem(m);
-		else
-			IF_ENQUEUE(isdn_linktab[unit]->tx_queue, m);
-#endif
+
 		(*isdn_linktab[unit]->bch_tx_start)(isdn_linktab[unit]->unit, isdn_linktab[unit]->channel);
 	}
 
@@ -575,8 +454,8 @@ i4brbchwrite(dev_t dev, struct uio * uio, int ioflag)
 /*---------------------------------------------------------------------------*
  *	rbch device ioctl handlibg
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
-i4brbchioctl(dev_t dev, IOCTL_CMD_T cmd, caddr_t data, int flag, struct thread *td)
+static int
+i4brbchioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
 {
 	int error = 0;
 	int unit = minor(dev);
@@ -669,12 +548,10 @@ i4brbchioctl(dev_t dev, IOCTL_CMD_T cmd, caddr_t data, int flag, struct thread *
 	return(error);
 }
 
-#ifdef OS_USES_POLL
-
 /*---------------------------------------------------------------------------*
  *	device driver poll
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4brbchpoll(dev_t dev, int events, struct thread *td)
 {
 	int revents = 0;	/* Events we found */
@@ -727,66 +604,6 @@ i4brbchpoll(dev_t dev, int events, struct thread *td)
 	return(revents);
 }
 
-#else /* OS_USES_POLL */
-
-/*---------------------------------------------------------------------------*
- *	device driver select
- *---------------------------------------------------------------------------*/
-PDEVSTATIC int
-i4brbchselect(dev_t dev, int rw, struct thread *td)
-{
-	int unit = minor(dev);
-	struct rbch_softc *sc = &rbch_softc[unit];
-        int s;
-
-	s = splhigh();
-
-	if(!(sc->sc_devstate & ST_ISOPEN))
-	{
-		splx(s);
-		NDBGL4(L4_RBCHDBG, "unit %d, not open anymore", unit);
-		return(1);
-	}
-	
-	if(sc->sc_devstate & ST_CONNECTED)
-	{
-		struct ifqueue *iqp;
-
-		switch(rw)
-		{
-			case FREAD:
-				if(sc->sc_bprot == BPROT_RHDLC)
-					iqp = &sc->sc_hdlcq;
-				else
-					iqp = isdn_linktab[unit]->rx_queue;	
-
-				if(!IF_QEMPTY(iqp))
-				{
-					splx(s);
-					return(1);
-				}
-				break;
-
-			case FWRITE:
-				if(!_IF_QFULL(isdn_linktab[unit]->rx_queue))
-				{
-					splx(s);
-					return(1);
-				}
-				break;
-
-			default:
-				splx(s);
-				return 0;
-		}
-	}
-	selrecord(p, &sc->selp);
-	splx(s);
-	return(0);
-}
-
-#endif /* OS_USES_POLL */
-
 #if I4BRBCHACCT
 /*---------------------------------------------------------------------------*
  *	watchdog routine
@@ -928,22 +745,10 @@ rbch_rx_data_rdy(int unit)
 
 		m->m_pkthdr.len = m->m_len;
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 		if (! IF_HANDOFF(&(rbch_softc[unit].sc_hdlcq), m, NULL))
 		{
 			NDBGL4(L4_RBCHDBG, "unit %d: hdlc rx queue full!", unit);
 		}
-#else
-                if(IF_QFULL(&(rbch_softc[unit].sc_hdlcq)))
-		{
-			NDBGL4(L4_RBCHDBG, "unit %d: hdlc rx queue full!", unit);
-			m_freem(m);
-		}			
-		else
-		{
-			IF_ENQUEUE(&(rbch_softc[unit].sc_hdlcq), m);
-		}
-#endif		
 	}
 
 	if(rbch_softc[unit].sc_devstate & ST_RDWAITDATA)
@@ -1000,24 +805,9 @@ rbch_clrq(int unit)
 {
 	CRIT_VAR;
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 	CRIT_BEG;
 	IF_DRAIN(&rbch_softc[unit].sc_hdlcq);
 	CRIT_END;
-#else
-	struct mbuf *m;
-        for(;;)
-        {
-                CRIT_BEG;
-                IF_DEQUEUE(&rbch_softc[unit].sc_hdlcq, m);
-                CRIT_END;
-
-                if(m)
-                        m_freem(m);
-                else
-                        break;
-        }
-#endif	
 }
 				
 /*---------------------------------------------------------------------------*
diff --git a/sys/i4b/driver/i4b_tel.c b/sys/i4b/driver/i4b_tel.c
index 877b560..92cf3f7 100644
--- a/sys/i4b/driver/i4b_tel.c
+++ b/sys/i4b/driver/i4b_tel.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *	last edit-date: [Thu Oct 18 13:24:50 2001]
+ *	last edit-date: [Sun Mar 17 09:52:06 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -41,10 +41,8 @@
 
 #include <sys/param.h>
 #include <sys/systm.h>
-
 #include <sys/ioccom.h>
 #include <sys/poll.h>
-
 #include <sys/conf.h>
 #include <sys/uio.h>
 #include <sys/kernel.h>
@@ -134,21 +132,12 @@ static unsigned char u2a_tab[];
 static unsigned char bitreverse[];
 static u_char sinetab[];
 
-#define PDEVSTATIC	static
-
-PDEVSTATIC d_open_t	i4btelopen;
-PDEVSTATIC d_close_t	i4btelclose;
-PDEVSTATIC d_read_t	i4btelread;
-PDEVSTATIC d_read_t	i4btelwrite;
-PDEVSTATIC d_ioctl_t	i4btelioctl;
-
-#ifdef OS_USES_POLL
-PDEVSTATIC d_poll_t i4btelpoll;
-#define POLLFIELD i4btelpoll
-#else
-PDEVSTATIC d_select_t i4btelsel;
-#define POLLFIELD i4btelsel
-#endif
+static d_open_t i4btelopen;
+static d_close_t i4btelclose;
+static d_read_t i4btelread;
+static d_read_t i4btelwrite;
+static d_ioctl_t i4btelioctl;
+static d_poll_t i4btelpoll;
 
 #define CDEV_MAJOR 56
 
@@ -158,7 +147,7 @@ static struct cdevsw i4btel_cdevsw = {
 	/* read */      i4btelread,
 	/* write */     i4btelwrite,
 	/* ioctl */     i4btelioctl,
-	/* poll */      POLLFIELD,
+	/* poll */      i4btelpoll,
 	/* mmap */      nommap,
 	/* strategy */  nostrategy,
 	/* name */      "i4btel",
@@ -168,8 +157,8 @@ static struct cdevsw i4btel_cdevsw = {
 	/* flags */     0,
 };
 
-PDEVSTATIC void i4btelinit(void *unused);
-PDEVSTATIC void i4btelattach(void *);
+static void i4btelinit(void *unused);
+static void i4btelattach(void *);
 
 PSEUDO_SET(i4btelattach, i4b_tel);
 
@@ -180,7 +169,7 @@ PSEUDO_SET(i4btelattach, i4b_tel);
 /*---------------------------------------------------------------------------*
  *	initialization at kernel load time
  *---------------------------------------------------------------------------*/
-PDEVSTATIC void
+static void
 i4btelinit(void *unused)
 {
 	cdevsw_add(&i4btel_cdevsw);
@@ -192,7 +181,7 @@ SYSINIT(i4bteldev, SI_SUB_DRIVERS,
 /*---------------------------------------------------------------------------*
  *	interface attach routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC void
+static void
 i4btelattach(void *dummy)
 {
 	int i, j;
@@ -231,7 +220,7 @@ i4btelattach(void *dummy)
 /*---------------------------------------------------------------------------*
  *	open tel device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4btelopen(dev_t dev, int flag, int fmt, struct thread *td)
 {
 	int unit = UNIT(dev);
@@ -260,7 +249,7 @@ i4btelopen(dev_t dev, int flag, int fmt, struct thread *td)
 /*---------------------------------------------------------------------------*
  *	close tel device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4btelclose(dev_t dev, int flag, int fmt, struct thread *td)
 {
 	int unit = UNIT(dev);
@@ -303,7 +292,7 @@ i4btelclose(dev_t dev, int flag, int fmt, struct thread *td)
 /*---------------------------------------------------------------------------*
  *	i4btelioctl - device driver ioctl routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4btelioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
 {
 	int unit = UNIT(dev);
@@ -425,7 +414,7 @@ i4btelioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
 /*---------------------------------------------------------------------------*
  *	read from tel device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4btelread(dev_t dev, struct uio *uio, int ioflag)
 {
 	int unit = UNIT(dev);
@@ -453,16 +442,10 @@ i4btelread(dev_t dev, struct uio *uio, int ioflag)
 
 			NDBGL4(L4_TELDBG, "i4btel%d, queue empty!", unit);
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 			if((error = msleep((caddr_t) &sc->isdn_linktab->rx_queue,
 					&sc->isdn_linktab->rx_queue->ifq_mtx,
 					TTIPRI | PCATCH,
 					"rtel", 0 )) != 0)
-#else
-			if((error = tsleep((caddr_t) &sc->isdn_linktab->rx_queue,
-						TTIPRI | PCATCH,
-						"rtel", 0 )) != 0)
-#endif						
 			{
 				sc->devstate &= ~ST_RDWAITDATA;
 				IF_UNLOCK(sc->isdn_linktab->rx_queue);
@@ -558,7 +541,7 @@ i4btelread(dev_t dev, struct uio *uio, int ioflag)
 /*---------------------------------------------------------------------------*
  *	write to tel device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4btelwrite(dev_t dev, struct uio * uio, int ioflag)
 {
 	int unit = UNIT(dev);
@@ -589,14 +572,9 @@ i4btelwrite(dev_t dev, struct uio * uio, int ioflag)
 		{
 			sc->devstate |= ST_WRWAITEMPTY;
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4	
 			if((error = msleep((caddr_t) &sc->isdn_linktab->tx_queue,
 					&sc->isdn_linktab->tx_queue->ifq_mtx,
 					TTIPRI | PCATCH, "wtel", 0)) != 0)
-#else
-			if((error = tsleep((caddr_t) &sc->isdn_linktab->tx_queue,
-					TTIPRI | PCATCH, "wtel", 0)) != 0)
-#endif					
 			{
 				sc->devstate &= ~ST_WRWAITEMPTY;
 				IF_UNLOCK(sc->isdn_linktab->tx_queue);
@@ -635,15 +613,7 @@ i4btelwrite(dev_t dev, struct uio * uio, int ioflag)
 				/* always reverse bitorder to line */
 				mtod(m,u_char *)[i] = bitreverse[mtod(m,u_char *)[i]];
 			}
-
-#if defined (__FreeBSD__) && __FreeBSD__ > 4			
 			(void) IF_HANDOFF(sc->isdn_linktab->tx_queue, m, NULL);
-#else
-			if(IF_QFULL(sc->isdn_linktab->tx_queue))
-				m_freem(m);
-			else
-				IF_ENQUEUE(sc->isdn_linktab->tx_queue, m);
-#endif			
 			(*sc->isdn_linktab->bch_tx_start)(sc->isdn_linktab->unit, sc->isdn_linktab->channel);
 		}
 	
@@ -728,12 +698,10 @@ tel_tone(tel_sc_t *sc)
 	(*sc->isdn_linktab->bch_tx_start)(sc->isdn_linktab->unit, sc->isdn_linktab->channel);
 }
 
-
-#ifdef OS_USES_POLL
 /*---------------------------------------------------------------------------*
  *	device driver poll
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4btelpoll(dev_t dev, int events, struct thread *td)
 {
 	int revents = 0;	/* Events we found */
@@ -810,85 +778,6 @@ i4btelpoll(dev_t dev, int events, struct thread *td)
 	return(revents);
 }
 
-#else /* OS_USES_POLL */
-
-/*---------------------------------------------------------------------------*
- *	device driver select
- *---------------------------------------------------------------------------*/
-PDEVSTATIC int
-i4btelsel(dev_t dev, int rw, struct thread *td)
-{
-	int s;
-	int unit = UNIT(dev);
-	int func = FUNC(dev);	
-
-	tel_sc_t *sc = &tel_sc[unit][func];
-	
-	s = splhigh();
-
-	if (!(sc->devstate & ST_ISOPEN))
-	{
-		NDBGL4(L4_TELDBG, "i4btel%d, !ST_ISOPEN", unit);
-		splx(s);
-		return(0);
-	}
-
-	if (func == FUNCTEL)
-	{
-		/* Don't even bother if we're not connected */
-		if (!(sc->devstate & ST_CONNECTED) || sc->isdn_linktab == NULL)
-		{
-			splx(s);
-			return 0;
-		}
-
-		if (rw == FREAD)
-		{
-			if (!IF_QEMPTY(sc->isdn_linktab->rx_queue))
-			{
-				NDBGL4(L4_TELDBG, "i4btel%d, FREAD", unit);
-				splx(s);
-				return 1;
-			}
-		}
-		else if (rw == FWRITE)
-		{
-			if (!_IF_QFULL(sc->isdn_linktab->tx_queue))
-			{
-				NDBGL4(L4_TELDBG, "i4btel%d, FWRITE", unit);
-				splx(s);
-				return 1;
-			}
-		}
-	}
-	else if (func == FUNCDIAL)
-	{
-		if (rw == FWRITE)
-		{
-			NDBGL4(L4_TELDBG, "i4bteld%d,  FWRITE", unit);
-			splx(s);
-			return 1;
-		}
-
-		if (rw == FREAD)
-		{
-			NDBGL4(L4_TELDBG, "i4bteld%d,  FREAD, result = %d", unit, sc->result);
-			if (sc->result != 0)
-			{
-				splx(s);
-				return 1;
-			}
-		}
-	}
-
-	NDBGL4(L4_TELDBG, "i4bteld%d,  selrecord", unit);
-	selrecord(td, &sc->selp);
-	splx(s);
-	return 0;
-}
-
-#endif /* OS_USES_POLL */
-
 /*===========================================================================*
  *			ISDN INTERFACE ROUTINES
  *===========================================================================*/
diff --git a/sys/i4b/driver/i4b_trace.c b/sys/i4b/driver/i4b_trace.c
index 81a5385..20bbbf2 100644
--- a/sys/i4b/driver/i4b_trace.c
+++ b/sys/i4b/driver/i4b_trace.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,7 +27,7 @@
  *	i4btrc - device driver for trace data read device
  *	---------------------------------------------------
  *
- *	last edit-date: [Fri Jan 12 14:18:12 2001]
+ *	last edit-date: [Sun Mar 17 09:52:51 2002]
  *
  * $FreeBSD$
  *
@@ -41,13 +41,7 @@
 
 #include <sys/param.h>
 #include <sys/systm.h>
-
-#if defined(__FreeBSD__) && __FreeBSD__ >= 3
 #include <sys/ioccom.h>
-#else
-#include <sys/ioctl.h>
-#endif
-
 #include <sys/conf.h>
 #include <sys/uio.h>
 #include <sys/kernel.h>
@@ -56,8 +50,6 @@
 #include <net/if.h>
 #include <sys/tty.h>
 
-#ifdef __FreeBSD__
-
 #ifdef DEVFS
 #include <sys/devfsext.h>
 #endif
@@ -65,67 +57,27 @@
 #include <machine/i4b_trace.h>
 #include <machine/i4b_ioctl.h>
 
-#else
-
-#include <i4b/i4b_trace.h>
-#include <i4b/i4b_ioctl.h>
-
-#endif
-
 #include <i4b/include/i4b_mbuf.h>
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_l3l4.h>
 
-#ifndef __FreeBSD__
-#define	memcpy(d,s,l)	bcopy(s,d,l)
-#endif
-
 static struct ifqueue trace_queue[NI4BTRC];
+
 static int device_state[NI4BTRC];
 #define ST_IDLE		0x00
 #define ST_ISOPEN	0x01
 #define ST_WAITDATA	0x02
 
-#if defined(__FreeBSD__) && __FreeBSD__ == 3
-#ifdef DEVFS
-static void *devfs_token[NI4BTRC];
-#endif
-#endif
-
 static int analyzemode = 0;
 static int rxunit = -1;
 static int txunit = -1;
 static int outunit = -1;
 
-#ifndef __FreeBSD__
-
-#define	PDEVSTATIC	/* - not static - */
-void i4btrcattach __P((void));
-int i4btrcopen __P((dev_t dev, int flag, int fmt, struct thread *td));
-int i4btrcclose __P((dev_t dev, int flag, int fmt, struct thread *td));
-int i4btrcread __P((dev_t dev, struct uio * uio, int ioflag));
-
-#ifdef __bsdi__
-int i4btrcioctl __P((dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td));
-#else
-int i4btrcioctl __P((dev_t dev, int cmd, caddr_t data, int flag, struct thread *td));
-#endif
-
-#endif
-
-#if BSD > 199306 && defined(__FreeBSD__)
-#define	PDEVSTATIC static
 static d_open_t	i4btrcopen;
 static d_close_t i4btrcclose;
 static d_read_t i4btrcread;
 static d_ioctl_t i4btrcioctl;
-
-#ifdef OS_USES_POLL
 static d_poll_t i4btrcpoll;
-#define POLLFIELD i4btrcpoll
-#else
-#define POLLFIELD noselect
-#endif
 
 #define CDEV_MAJOR 59
 
@@ -135,7 +87,7 @@ static struct cdevsw i4btrc_cdevsw = {
         /* read */      i4btrcread,
         /* write */     nowrite,
         /* ioctl */     i4btrcioctl,
-        /* poll */      POLLFIELD,
+        /* poll */      i4btrcpoll,
         /* mmap */      nommap,
         /* strategy */  nostrategy,
         /* name */      "i4btrc",
@@ -160,49 +112,13 @@ SYSINIT(i4btrcdev, SI_SUB_DRIVERS,
 static void i4btrcattach(void *);
 PSEUDO_SET(i4btrcattach, i4b_trace);
 
-#endif /* BSD > 199306 && defined(__FreeBSD__) */
-
-#ifdef __bsdi__
-#include <sys/device.h>
-int i4btrcmatch(struct device *parent, struct cfdata *cf, void *aux);
-void dummy_i4btrcattach(struct device*, struct device *, void *);
-
-#define CDEV_MAJOR 60
-
-static struct cfdriver i4btrccd =
-	{ NULL, "i4btrc", i4btrcmatch, dummy_i4btrcattach, DV_DULL,
-	  sizeof(struct cfdriver) };
-struct devsw i4btrcsw = 
-	{ &i4btrccd,
-	  i4btrcopen,	i4btrcclose,	i4btrcread,	nowrite,
-	  i4btrcioctl,	seltrue,	nommap,		nostrat,
-	  nodump,	nopsize,	0,		nostop
-};
-
-int
-i4btrcmatch(struct device *parent, struct cfdata *cf, void *aux)
-{
-	printf("i4btrcmatch: aux=0x%x\n", aux);
-	return 1;
-}
-void
-dummy_i4btrcattach(struct device *parent, struct device *self, void *aux)
-{
-	printf("dummy_i4btrcattach: aux=0x%x\n", aux);
-}
-#endif /* __bsdi__ */
-
 int get_trace_data_from_l1(i4b_trace_hdr_t *hdr, int len, char *buf);
 
 /*---------------------------------------------------------------------------*
  *	interface attach routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC void
-#ifdef __FreeBSD__
+static void
 i4btrcattach(void *dummy)
-#else
-i4btrcattach()
-#endif
 {
 	int i;
 
@@ -210,17 +126,13 @@ i4btrcattach()
 	
 	for(i=0; i < NI4BTRC; i++)
 	{
-
-#if defined(__FreeBSD__)
 		make_dev(&i4btrc_cdevsw, i,
 				     UID_ROOT, GID_WHEEL, 0600, "i4btrc%d", i);
-#endif
 		trace_queue[i].ifq_maxlen = IFQ_MAXLEN;
 
-#if __FreeBSD__ > 4
 		if(!mtx_initialized(&trace_queue[i].ifq_mtx))
 			mtx_init(&trace_queue[i].ifq_mtx, "i4b_trace", MTX_DEF);
-#endif
+
 		device_state[i] = ST_IDLE;
 	}
 }
@@ -294,6 +206,7 @@ get_trace_data_from_l1(i4b_trace_hdr_t *hdr, int len, char *buf)
 	}
 
 	IF_LOCK(&trace_queue[unit]);
+
 	if(_IF_QFULL(&trace_queue[unit]))
 	{
 		struct mbuf *m1;
@@ -333,7 +246,7 @@ get_trace_data_from_l1(i4b_trace_hdr_t *hdr, int len, char *buf)
 /*---------------------------------------------------------------------------*
  *	open trace device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4btrcopen(dev_t dev, int flag, int fmt, struct thread *td)
 {
 	int x;
@@ -360,7 +273,7 @@ i4btrcopen(dev_t dev, int flag, int fmt, struct thread *td)
 /*---------------------------------------------------------------------------*
  *	close trace device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4btrcclose(dev_t dev, int flag, int fmt, struct thread *td)
 {
 	int unit = minor(dev);
@@ -406,7 +319,7 @@ i4btrcclose(dev_t dev, int flag, int fmt, struct thread *td)
 /*---------------------------------------------------------------------------*
  *	read from trace device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4btrcread(dev_t dev, struct uio * uio, int ioflag)
 {
 	struct mbuf *m;
@@ -420,20 +333,15 @@ i4btrcread(dev_t dev, struct uio * uio, int ioflag)
 	x = SPLI4B();
 	
 	IF_LOCK(&trace_queue[unit]);
+
 	while(IF_QEMPTY(&trace_queue[unit]) && (device_state[unit] & ST_ISOPEN))
 	{
 		device_state[unit] |= ST_WAITDATA;
 		
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 		if((error = msleep((caddr_t) &trace_queue[unit],
 					&trace_queue[unit].ifq_mtx,
 					TTIPRI | PCATCH,
 					"bitrc", 0 )) != 0)
-#else
-		if((error = tsleep((caddr_t) &trace_queue[unit],
-					TTIPRI | PCATCH,
-					"bitrc", 0 )) != 0)
-#endif                                                                                               
 		{
 			device_state[unit] &= ~ST_WAITDATA;
 			IF_UNLOCK(&trace_queue[unit]);
@@ -458,28 +366,20 @@ i4btrcread(dev_t dev, struct uio * uio, int ioflag)
 	return(error);
 }
 
-#if defined(__FreeBSD__) && defined(OS_USES_POLL)
 /*---------------------------------------------------------------------------*
  *	poll device
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4btrcpoll(dev_t dev, int events, struct thread *td)
 {
 	return(ENODEV);
 }
-#endif
 
 /*---------------------------------------------------------------------------*
  *	device driver ioctl routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
-#if defined (__FreeBSD_version) && __FreeBSD_version >= 300003
+static int
 i4btrcioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
-#elif defined(__bsdi__)
-i4btrcioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
-#else
-i4btrcioctl(dev_t dev, int cmd, caddr_t data, int flag, struct thread *td)
-#endif
 {
 	int error = 0;
 	int unit = minor(dev);
diff --git a/sys/i4b/include/i4b_cause.h b/sys/i4b/include/i4b_cause.h
index 36c6142..c98683a 100644
--- a/sys/i4b/include/i4b_cause.h
+++ b/sys/i4b/include/i4b_cause.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *	i4b_cause.h - causes and cause handling for i4b
  *	-----------------------------------------------
  *
- *	$Id: i4b_cause.h,v 1.13 2000/02/06 19:01:14 hm Exp $
- *
  * $FreeBSD$
  *
- *      last edit-date: [Sun Feb  6 19:46:41 2000]
+ *      last edit-date: [Sun Mar 17 10:08:21 2002]
  *
  *---------------------------------------------------------------------------*/
 
diff --git a/sys/i4b/include/i4b_debug.h b/sys/i4b/include/i4b_debug.h
index 084623a..ac8f6a8 100644
--- a/sys/i4b/include/i4b_debug.h
+++ b/sys/i4b/include/i4b_debug.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *      last edit-date: [Mon May 21 10:05:34 2001]
+ *      last edit-date: [Sun Mar 17 10:08:41 2002]
  *
  *---------------------------------------------------------------------------*/
 
diff --git a/sys/i4b/include/i4b_global.h b/sys/i4b/include/i4b_global.h
index f2e9bff..c245277 100644
--- a/sys/i4b/include/i4b_global.h
+++ b/sys/i4b/include/i4b_global.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *	last edit-date: [Mon Jan 15 15:47:40 2001]
+ *	last edit-date: [Sun Mar 17 09:55:26 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -40,25 +40,6 @@
  *	hiding OS differences in the kernel
  *---------------------------------------------------------------------------*/ 
 
-/*-------------------------------------------------*/
-/* hide SMP changes in FreeBSD 5.x-current for 4.x */
-/*-------------------------------------------------*/
-
-#if defined(__FreeBSD__) && __FreeBSD__ <= 4
-
-#define IF_LOCK(a)
-#define IF_UNLOCK(a)
-#define _IF_QFULL(a)		IF_QFULL((a))
-#define _IF_ENQUEUE(a, b)	IF_ENQUEUE((a), (b))
-#define _IF_DEQUEUE(a, b)	IF_DEQUEUE((a), (b))
-#define _IF_PREPEND(a, b)	IF_PREPEND((a), (b))
-
-/* get back DELAY() */
-
-#include <machine/clock.h>
-
-#endif
-
 #if defined(__FreeBSD__) && __FreeBSD__ >= 5
 /*
  * Deprecated LKM interface.
@@ -91,71 +72,18 @@
 /* time handling */
 /*---------------*/
 
-#ifdef __FreeBSD__
 #include <sys/param.h>
 
-#if defined(__FreeBSD_version) && __FreeBSD_version >= 400000 && __FreeBSD_version < 400011
-#error "Unsupported FreeBSD-current version,"
-#error "you need a FreeBSD-current >= 400011"
-#endif
-
-#if defined(__FreeBSD_version) && __FreeBSD_version >= 300001
-
 #define TIMEOUT_FUNC_T	timeout_t *
 #define SECOND		time_second
 #define MICROTIME(x)	getmicrotime(&(x))
 
-#else /* FreeBSD < 3 */
-
-#define TIMEOUT_FUNC_T  timeout_func_t
-#define SECOND		time.tv_sec
-#define MICROTIME(x)	microtime(&(x))
-
-#endif /* >= 3 */
-#endif /* __FreeBSD__ */
-
-#if defined(__NetBSD__) || defined (__OpenBSD__) || defined(__bsdi__)
-
-#define TIMEOUT_FUNC_T	void *
-#define SECOND		time.tv_sec
-#define MICROTIME(x)	(x) = time
-
-#endif /* __NetBSD__ */
-
 /*----------------*/
 /* timer handling */
 /*----------------*/
 
-#if defined(__NetBSD__)
-
-#if __NetBSD_Version__ >= 104230000
-#define START_TIMER(XHANDLE, XF, XSC, XTIME) callout_reset(&XHANDLE, XTIME, (TIMEOUT_FUNC_T)XF, (void*)XSC)
-#define STOP_TIMER(XHANDLE, XF, XSC) callout_stop(&XHANDLE)
-#else
-#define START_TIMER(XHANDLE, XF, XSC, XTIME) timeout((TIMEOUT_FUNC_T)XF, (void*)XSC, XTIME)
-#define STOP_TIMER(XHANDLE, XF, XSC)    untimeout((TIMEOUT_FUNC_T)XF, (void*)XSC)
-#endif
-
-#else
 #define START_TIMER(XHANDLE, XF, XSC, XTIME) XHANDLE = timeout((TIMEOUT_FUNC_T)XF, (void*)XSC, XTIME)
-#ifdef __FreeBSD__
 #define	STOP_TIMER(XHANDLE, XF, XSC)	untimeout((TIMEOUT_FUNC_T)XF, (void*)XSC, XHANDLE)
-#else
-#define STOP_TIMER(XHANDLE, XF, XSC)	untimeout((TIMEOUT_FUNC_T)XF, (void*)XSC)
-#endif
-#endif
-
-/*----------------------*/
-/* poll/select handling */
-/*----------------------*/
-
-#if (defined(__FreeBSD__) && \
-        (!defined(__FreeBSD_version) || (__FreeBSD_version < 300001))) \
-                || defined (__OpenBSD__) || defined(__bsdi__)
-#define OS_USES_SELECT
-#else
-#define OS_USES_POLL
-#endif
 
 /*---------------------------------------------------------------------------*
  *	misc globally used things in the kernel
diff --git a/sys/i4b/include/i4b_ioctl.h b/sys/i4b/include/i4b_ioctl.h
index 4d5b913..561a131 100644
--- a/sys/i4b/include/i4b_ioctl.h
+++ b/sys/i4b/include/i4b_ioctl.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,18 +29,20 @@
  *
  * $FreeBSD$
  *
- *      last edit-date: [Sun Oct 21 11:00:31 2001]
+ *      last edit-date: [Sun Mar 17 10:09:55 2002]
  *
  *---------------------------------------------------------------------------*/
 
 #ifndef _I4B_IOCTL_H_
 #define _I4B_IOCTL_H_
 
+#if 0
 #if defined(__FreeBSD__) && __FreeBSD__ >= 3
 #ifndef _MACHINE_TYPES_H_
 #include <machine/types.h>
 #endif /* _MACHINE_TYPES_H_ */
 #endif /* __FreeBSD__ */
+#endif
 
 /*---------------------------------------------------------------------------*
  *	version and release number for isdn4bsd package
diff --git a/sys/i4b/include/i4b_isdnq931.h b/sys/i4b/include/i4b_isdnq931.h
index 19ef428..94f1291 100644
--- a/sys/i4b/include/i4b_isdnq931.h
+++ b/sys/i4b/include/i4b_isdnq931.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *	i4b_isdnq931.h - DSS1 layer 3 message types
  *	-------------------------------------------
  *
- *	$Id: i4b_isdnq931.h,v 1.7 2000/04/27 07:42:43 hm Exp $
- *
  * $FreeBSD$
  *
- *	last edit-date: [Thu Apr 27 09:46:13 2000]
+ *	last edit-date: [Sat Mar  9 15:53:49 2002]
  *
  *---------------------------------------------------------------------------*/
 
diff --git a/sys/i4b/include/i4b_l1l2.h b/sys/i4b/include/i4b_l1l2.h
index 4a8ccba..be45c07 100644
--- a/sys/i4b/include/i4b_l1l2.h
+++ b/sys/i4b/include/i4b_l1l2.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,22 +27,16 @@
  *	i4b_l1l2.h - i4b layer 1 / layer 2 interactions
  *	---------------------------------------------------
  *
- *	$Id: i4b_l1l2.h,v 1.11 2000/06/02 16:14:35 hm Exp $
- *
  * $FreeBSD$
  *
- *	last edit-date: [Fri Jun  2 14:35:03 2000]
+ *	last edit-date: [Sat Mar  9 15:54:49 2002]
  *
  *---------------------------------------------------------------------------*/
 
 #ifndef _I4B_L1L2_H_
 #define _I4B_L1L2_H_
 
-#ifdef __FreeBSD__
 #include <machine/i4b_trace.h>
-#else
-#include <i4b/i4b_trace.h>
-#endif
 
 extern struct i4b_l1l2_func i4b_l1l2_func;
 
@@ -93,4 +87,3 @@ struct i4b_l1l2_func
 };
 	
 #endif /* _I4B_L1L2_H_ */
-
diff --git a/sys/i4b/include/i4b_l2l3.h b/sys/i4b/include/i4b_l2l3.h
index 6e0e197..19a6990 100644
--- a/sys/i4b/include/i4b_l2l3.h
+++ b/sys/i4b/include/i4b_l2l3.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *	i4b_l2l3.h - i4b layer 2 / layer 3 interactions
  *	-----------------------------------------------
  *
- *	$Id: i4b_l2l3.h,v 1.8 2000/06/02 16:14:35 hm Exp $
- *
  * $FreeBSD$
  *
- *	last edit-date: [Fri Jun  2 14:33:34 2000]
+ *	last edit-date: [Sat Mar  9 15:55:16 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -115,4 +113,3 @@ struct i4b_l2l3_func
 };
 
 #endif /* _I4B_L2L3_H_ */
-
diff --git a/sys/i4b/include/i4b_l3l4.h b/sys/i4b/include/i4b_l3l4.h
index 64617a2..b4da38a 100644
--- a/sys/i4b/include/i4b_l3l4.h
+++ b/sys/i4b/include/i4b_l3l4.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *	last edit-date: [Thu Oct 18 13:26:16 2001]
+ *	last edit-date: [Sat Mar  9 15:57:44 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -113,13 +113,6 @@ void tel_set_linktab(int unit, isdn_link_t *ilt);
 drvr_link_t *i4bisppp_ret_linktab(int unit);
 void i4bisppp_set_linktab(int unit, isdn_link_t *ilt);
 
-#ifdef __bsdi__
-/* global linktab functions for IBC userland driver */
-
-drvr_link_t *ibc_ret_linktab(int unit);
-void ibc_set_linktab(int unit, isdn_link_t *ilt);
-#endif
-
 /* global linktab functions for ING network driver */
 
 drvr_link_t *ing_ret_linktab(int unit);
@@ -189,8 +182,7 @@ typedef struct
 
 	int	timeout_active;		/* idle timeout() active flag	*/
 
-#if (defined(__FreeBSD_version) && __FreeBSD_version >= 300001) || \
-	(!defined(__FreeBSD_version) && defined(__FreeBSD__) && __FreeBSD__ >= 3)
+	int	callouts_inited;	/* must init before use */
 	struct	callout_handle	idle_timeout_handle;
 	struct	callout_handle	T303_callout;
 	struct	callout_handle	T305_callout;
@@ -199,19 +191,6 @@ typedef struct
 	struct	callout_handle	T310_callout;
 	struct	callout_handle	T313_callout;
 	struct	callout_handle	T400_callout;
-	int	callouts_inited;		/* must init before use */
-#endif
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-	struct	callout	idle_timeout_handle;
-	struct	callout	T303_callout;
-	struct	callout	T305_callout;
-	struct	callout	T308_callout;
-	struct	callout	T309_callout;
-	struct	callout	T310_callout;
-	struct	callout	T313_callout;
-	struct	callout	T400_callout;
-	int	callouts_inited;		/* must init before use */
-#endif
 
 	int	idletime_state;		/* wait for idle_time begin	*/
 #define IST_IDLE	0	/* shorthold mode disabled 	*/
diff --git a/sys/i4b/include/i4b_mbuf.h b/sys/i4b/include/i4b_mbuf.h
index b1b46c0..0b74044 100644
--- a/sys/i4b/include/i4b_mbuf.h
+++ b/sys/i4b/include/i4b_mbuf.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *	i4b - mbuf handling support routines
  *	--------------------------------------
  *
- *	$Id: i4b_mbuf.h,v 1.9 2000/03/07 14:21:18 hm Exp $
- *
  * $FreeBSD$
  *
- *	last edit-date: [Fri Mar  3 14:30:09 2000]
+ *	last edit-date: [Sat Mar  9 15:58:11 2002]
  *
  *---------------------------------------------------------------------------*/
 
diff --git a/sys/i4b/include/i4b_rbch_ioctl.h b/sys/i4b/include/i4b_rbch_ioctl.h
index 88142ad..dbaceed 100644
--- a/sys/i4b/include/i4b_rbch_ioctl.h
+++ b/sys/i4b/include/i4b_rbch_ioctl.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999 Hellmuth Michaelis. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -27,11 +27,9 @@
  *	i4b_rbch_ioctl.h raw B-channel driver interface ioctls
  *	------------------------------------------------------
  *
- *	$Id: i4b_rbch_ioctl.h,v 1.2 1999/12/13 21:25:28 hm Exp $
- *
  * $FreeBSD$
  *
- *      last edit-date: [Mon Dec 13 22:07:12 1999]
+ *      last edit-date: [Sun Mar 17 10:10:25 2002]
  *
  *---------------------------------------------------------------------------*/
 
diff --git a/sys/i4b/include/i4b_tel_ioctl.h b/sys/i4b/include/i4b_tel_ioctl.h
index 3b92922..2f0bb2b 100644
--- a/sys/i4b/include/i4b_tel_ioctl.h
+++ b/sys/i4b/include/i4b_tel_ioctl.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001  Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *      last edit-date: [Wed Oct 17 13:47:03 2001]
+ *      last edit-date: [Sun Mar 17 10:10:39 2002]
  *
  *---------------------------------------------------------------------------*/
 
diff --git a/sys/i4b/include/i4b_trace.h b/sys/i4b/include/i4b_trace.h
index 24229ec..ee05bfd 100644
--- a/sys/i4b/include/i4b_trace.h
+++ b/sys/i4b/include/i4b_trace.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *	i4b_trace.h - header file for trace data read device
  *	----------------------------------------------------
  *
- *	$Id: i4b_trace.h,v 1.8 2000/03/08 16:08:18 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Wed Mar  8 16:41:43 2000]
+ *      last edit-date: [Sun Mar 17 10:10:52 2002]
  *
  *---------------------------------------------------------------------------*/
 
diff --git a/sys/i4b/layer1/isic/i4b_bchan.c b/sys/i4b/layer1/isic/i4b_bchan.c
index 2f520d8..f8b6f0d 100644
--- a/sys/i4b/layer1/isic/i4b_bchan.c
+++ b/sys/i4b/layer1/isic/i4b_bchan.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *      last edit-date: [Wed Jan 24 09:07:12 2001]
+ *      last edit-date: [Sat Mar  9 16:00:56 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -89,10 +89,8 @@ isic_bchannel_setup(int unit, int h_chan, int bprot, int activate)
 
 	chan->rx_queue.ifq_maxlen = IFQ_MAXLEN;
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4	
 	if(!mtx_initialized(&chan->rx_queue.ifq_mtx))
 		mtx_init(&chan->rx_queue.ifq_mtx, "i4b_isic_rx", MTX_DEF);
-#endif
 
 	i4b_Bcleanifq(&chan->rx_queue);	/* clean rx queue */
 
@@ -108,10 +106,8 @@ isic_bchannel_setup(int unit, int h_chan, int bprot, int activate)
 
 	chan->tx_queue.ifq_maxlen = IFQ_MAXLEN;
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4	
 	if(!mtx_initialized(&chan->tx_queue.ifq_mtx))
 		mtx_init(&chan->tx_queue.ifq_mtx, "i4b_isic_tx", MTX_DEF);
-#endif
 	
 	i4b_Bcleanifq(&chan->tx_queue);	/* clean tx queue */
 
diff --git a/sys/i4b/layer1/isic/i4b_hscx.c b/sys/i4b/layer1/isic/i4b_hscx.c
index cac4a13..03eb3c4 100644
--- a/sys/i4b/layer1/isic/i4b_hscx.c
+++ b/sys/i4b/layer1/isic/i4b_hscx.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *      last edit-date: [Wed Jan 24 09:09:42 2001]
+ *      last edit-date: [Sat Mar  9 16:01:49 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -267,18 +267,8 @@ isic_hscx_irq(register struct l1_softc *sc, u_char ista, int h_chan, u_char ex_i
 				if(!(i4b_l1_bchan_tel_silence(chan->in_mbuf->m_data, chan->in_mbuf->m_len)))
 					activity = ACT_RX;
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 				(void) IF_HANDOFF(&chan->rx_queue, chan->in_mbuf, NULL);
-#else
-				if(!(IF_QFULL(&chan->rx_queue)))
-				{
-					IF_ENQUEUE(&chan->rx_queue, chan->in_mbuf);
-				}
-				else
-				{
-					i4b_Bfreembuf(chan->in_mbuf);
-				}
-#endif
+
 				/* signal upper driver that data is available */
 
 				(*chan->isic_drvr_linktab->bch_rx_data_ready)(chan->isic_drvr_linktab->unit);
diff --git a/sys/i4b/layer2/i4b_iframe.c b/sys/i4b/layer2/i4b_iframe.c
index 4280528..7d5cbd1 100644
--- a/sys/i4b/layer2/i4b_iframe.c
+++ b/sys/i4b/layer2/i4b_iframe.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,19 +27,14 @@
  *	i4b_iframe.c - i frame handling routines
  *	------------------------------------------
  *
- *	$Id: i4b_iframe.c,v 1.25 2000/08/24 11:48:57 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Thu Aug 24 12:49:18 2000]
+ *      last edit-date: [Sat Mar  9 16:07:21 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq921.h"
-#else
-#define	NI4BQ921	1
-#endif
+
 #if NI4BQ921 > 0
 
 #include <sys/param.h>
@@ -49,18 +44,8 @@
 #include <sys/socket.h>
 #include <net/if.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_trace.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#include <i4b/i4b_trace.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_l1l2.h>
diff --git a/sys/i4b/layer2/i4b_l2.c b/sys/i4b/layer2/i4b_l2.c
index 96a4a15..745b465 100644
--- a/sys/i4b/layer2/i4b_l2.c
+++ b/sys/i4b/layer2/i4b_l2.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,15 +29,12 @@
  *
  * $FreeBSD$
  *
- *      last edit-date: [Fri Jan 12 16:43:31 2001]
+ *      last edit-date: [Sat Mar  9 16:11:14 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq921.h"
-#else
-#define NI4BQ921	1
-#endif
+
 #if NI4BQ921 > 0
 
 #include <sys/param.h>
@@ -46,16 +43,7 @@
 #include <sys/socket.h>
 #include <net/if.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_l1l2.h>
 #include <i4b/include/i4b_l2l3.h>
@@ -276,29 +264,18 @@ i4b_mph_status_ind(int unit, int status, int parm)
 			l2sc->unit = unit;
 			l2sc->i_queue.ifq_maxlen = IQUEUE_MAXLEN;
 
-#if defined(__FreeBSD__) && __FreeBSD__ > 4
 			if(!mtx_initialized(&l2sc->i_queue.ifq_mtx))
 				mtx_init(&l2sc->i_queue.ifq_mtx, "i4b_l2sc", MTX_DEF);
-#endif
+
 			l2sc->ua_frame = NULL;
 			bzero(&l2sc->stat, sizeof(lapdstat_t));			
 			i4b_l2_unit_init(unit);
 			
-#if defined(__FreeBSD__)
 			/* initialize the callout handles for timeout routines */
 			callout_handle_init(&l2sc->T200_callout);
 			callout_handle_init(&l2sc->T202_callout);
 			callout_handle_init(&l2sc->T203_callout);
 			callout_handle_init(&l2sc->IFQU_callout);
-#endif
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-			/* initialize the callout handles for timeout routines */
-			callout_init(&l2sc->T200_callout);
-			callout_init(&l2sc->T202_callout);
-			callout_init(&l2sc->T203_callout);
-			callout_init(&l2sc->IFQU_callout);
-#endif
-
 			break;
 
 		case STI_L1STAT:	/* state of layer 1 */
diff --git a/sys/i4b/layer2/i4b_l2.h b/sys/i4b/layer2/i4b_l2.h
index 5277a06..15c6ef8 100644
--- a/sys/i4b/layer2/i4b_l2.h
+++ b/sys/i4b/layer2/i4b_l2.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *	i4b_l2.h - ISDN layer 2 (Q.921) definitions
  *	---------------------------------------------
  *
- *	$Id: i4b_l2.h,v 1.23 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Sat Mar 18 10:28:22 2000]
+ *      last edit-date: [Sat Mar  9 16:12:20 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -63,18 +61,10 @@ typedef struct {
 	void(*T202func)(void *);/* function to be called when T202 expires */
 	int	T203;		/* max line idle time */
 
-#if defined(__FreeBSD__)
 	struct	callout_handle T200_callout;
 	struct	callout_handle T202_callout;
 	struct	callout_handle T203_callout;
 	struct	callout_handle IFQU_callout;	
-#endif
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-	struct	callout T200_callout;
-	struct	callout T202_callout;
-	struct	callout T203_callout;
-	struct	callout IFQU_callout;	
-#endif
 
 /*
  * i4b_iframe.c, i4b_i_frame_queued_up(): value of IFQU_DLY
diff --git a/sys/i4b/layer2/i4b_l2fsm.c b/sys/i4b/layer2/i4b_l2fsm.c
index 441b314..a0ca484 100644
--- a/sys/i4b/layer2/i4b_l2fsm.c
+++ b/sys/i4b/layer2/i4b_l2fsm.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,19 +27,14 @@
  *	i4b_l2fsm.c - layer 2 FSM
  *	-------------------------
  *
- *	$Id: i4b_l2fsm.c,v 1.22 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Tue May 30 15:48:20 2000]
+ *      last edit-date: [Sat Mar  9 16:14:07 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq921.h"
-#else
-#define	NI4BQ921	1
-#endif
+
 #if NI4BQ921 > 0
 
 #include <sys/param.h>
@@ -47,17 +42,8 @@
 #include <sys/socket.h>
 #include <net/if.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_ioctl.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_l2l3.h>
diff --git a/sys/i4b/layer2/i4b_l2fsm.h b/sys/i4b/layer2/i4b_l2fsm.h
index c7ddaee..0589560 100644
--- a/sys/i4b/layer2/i4b_l2fsm.h
+++ b/sys/i4b/layer2/i4b_l2fsm.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *      i4b_l2fsm.h - layer 2 FSM
  *      -------------------------
  *
- *	$Id: i4b_l2fsm.h,v 1.6 2000/03/18 09:33:48 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Sat Mar 18 10:28:37 2000]
+ *      last edit-date: [Sat Mar  9 17:47:53 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -81,4 +79,3 @@ enum Q921_events {
 };
 	
 #endif /* _I4B_L2FSM_H_ */
-
diff --git a/sys/i4b/layer2/i4b_l2timer.c b/sys/i4b/layer2/i4b_l2timer.c
index 4ee335a..c3cbf1d 100644
--- a/sys/i4b/layer2/i4b_l2timer.c
+++ b/sys/i4b/layer2/i4b_l2timer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,19 +27,14 @@
  *	i4b_l2timer.c - layer 2 timer handling
  *	--------------------------------------
  *
- *	$Id: i4b_l2timer.c,v 1.20 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Thu Aug 24 12:48:52 2000]
+ *      last edit-date: [Sat Mar  9 17:48:58 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq921.h"
-#else
-#define NI4BQ921	1
-#endif
+
 #if NI4BQ921 > 0
 
 #include <sys/param.h>
@@ -48,16 +43,7 @@
 #include <sys/socket.h>
 #include <net/if.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 
diff --git a/sys/i4b/layer2/i4b_lme.c b/sys/i4b/layer2/i4b_lme.c
index 7bc08ab..fce3712 100644
--- a/sys/i4b/layer2/i4b_lme.c
+++ b/sys/i4b/layer2/i4b_lme.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,19 +27,14 @@
  *	i4b_lme.c - layer management entity
  *	-------------------------------------
  *
- *	$Id: i4b_lme.c,v 1.15 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Mon May 29 16:55:12 2000]
+ *      last edit-date: [Sat Mar  9 17:49:42 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq921.h"
-#else
-#define	NI4BQ921	1
-#endif
+
 #if NI4BQ921 > 0
 
 #include <sys/param.h>
@@ -47,17 +42,7 @@
 #include <sys/socket.h>
 #include <net/if.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
-
 
 #include <i4b/layer2/i4b_l2.h>
 
diff --git a/sys/i4b/layer2/i4b_mbuf.c b/sys/i4b/layer2/i4b_mbuf.c
index 665ff67..95f234c 100644
--- a/sys/i4b/layer2/i4b_mbuf.c
+++ b/sys/i4b/layer2/i4b_mbuf.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *      last edit-date: [Sat Jan 13 13:15:45 2001]
+ *      last edit-date: [Sat Mar  9 17:51:22 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -46,18 +46,9 @@
 
 #ifdef I4B_MBUF_TYPE_DEBUG
 
-#ifdef  __FreeBSD__
-
 #define MT_DCHAN	42
 #define MT_BCHAN	43
 
-#else /* NetBSD */
-
-#define MT_DCHAN        MT_DATA
-#define MT_BCHAN        MT_DATA
-
-#endif
-
 #define MT_I4B_D	MT_DCHAN
 #define MT_I4B_B	MT_BCHAN
 
@@ -140,16 +131,8 @@ i4b_Dcleanifq(struct ifqueue *ifq)
 {
 	int x = splimp();
 
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 	IF_DRAIN(ifq);
-#else
-	struct mbuf *m;
-	while(!IF_QEMPTY(ifq))
-	{
-		IF_DEQUEUE(ifq, m);
-		i4b_Dfreembuf(m);
-	}
-#endif
+
 	splx(x);
 }
 
@@ -225,16 +208,8 @@ i4b_Bcleanifq(struct ifqueue *ifq)
 {
 	int x = splimp();
 	
-#if defined (__FreeBSD__) && __FreeBSD__ > 4
 	IF_DRAIN(ifq);
-#else
-	struct mbuf *m;
-	while(!IF_QEMPTY(ifq))
-	{
-		IF_DEQUEUE(ifq, m);
-		i4b_Bfreembuf(m);
-	}
-#endif
+
 	splx(x);
 }
 
diff --git a/sys/i4b/layer2/i4b_sframe.c b/sys/i4b/layer2/i4b_sframe.c
index 34697c9..0b4c6c6 100644
--- a/sys/i4b/layer2/i4b_sframe.c
+++ b/sys/i4b/layer2/i4b_sframe.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,19 +27,14 @@
  *	i4b_sframe.c - s frame handling routines
  *	----------------------------------------
  *
- *	$Id: i4b_sframe.c,v 1.15 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Mon May 29 16:55:23 2000]
+ *      last edit-date: [Sat Mar  9 17:52:06 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq921.h"
-#else
-#define	NI4BQ921	1
-#endif
+
 #if NI4BQ921 > 0
 
 #include <sys/param.h>
@@ -48,16 +43,7 @@
 #include <sys/socket.h>
 #include <net/if.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_l1l2.h>
 #include <i4b/include/i4b_mbuf.h>
diff --git a/sys/i4b/layer2/i4b_tei.c b/sys/i4b/layer2/i4b_tei.c
index 9beadf5..1e5cfa8 100644
--- a/sys/i4b/layer2/i4b_tei.c
+++ b/sys/i4b/layer2/i4b_tei.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,19 +27,14 @@
  *	i4b_tei.c - tei handling procedures
  *	-----------------------------------
  *
- *	$Id: i4b_tei.c,v 1.25 2000/09/01 14:11:51 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Fri Oct 13 15:56:35 2000]
+ *      last edit-date: [Sat Mar  9 17:53:27 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq921.h"
-#else
-#define	NI4BQ921	1
-#endif
+
 #if NI4BQ921 > 0
 
 #include <sys/param.h>
@@ -49,16 +44,7 @@
 #include <sys/socket.h>
 #include <net/if.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_l1l2.h>
@@ -282,9 +268,6 @@ i4b_tei_chkresp(l2_softc_t *l2sc)
 void
 i4b_make_rand_ri(l2_softc_t *l2sc)
 {
-
-#if defined(__FreeBSD__)
-
 	u_short val;
 
 #ifdef RANDOMDEV
@@ -293,28 +276,6 @@ i4b_make_rand_ri(l2_softc_t *l2sc)
 	val = (u_short)random();
 #endif /* RANDOMDEV */ 
 
-#else
-
-	register u_short val;
-	register int i;
-	static int called = 42;
-	
-	val = (l2sc->last_rih << 8) | l2sc->last_ril;
-
-	val += ++called;
-	
-	for(i=0; i < 50 ; i++, val++)
-	{
-		val |= l2sc->unit+i;
-		val <<= i;
-		val ^= (time.tv_sec >> 16) ^ time.tv_usec;
-		val <<= i;
-		val ^= time.tv_sec ^ (time.tv_usec >> 16);
-
-		if(val != 0 && val != 0xffff)
-			break;
-	}
-#endif
 	l2sc->last_rih = (val >> 8) & 0x00ff;
 	l2sc->last_ril = val & 0x00ff;
 }
diff --git a/sys/i4b/layer2/i4b_uframe.c b/sys/i4b/layer2/i4b_uframe.c
index 1a29f27..f7c89c2 100644
--- a/sys/i4b/layer2/i4b_uframe.c
+++ b/sys/i4b/layer2/i4b_uframe.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,19 +27,14 @@
  *	i4b_uframe.c - routines for handling U-frames
  *	-----------------------------------------------
  *
- *	$Id: i4b_uframe.c,v 1.13 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Mon May 29 16:55:30 2000]
+ *      last edit-date: [Sat Mar  9 17:54:08 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq921.h"
-#else
-#define	NI4BQ921	1
-#endif
+
 #if NI4BQ921 > 0
 
 #include <sys/param.h>
@@ -48,16 +43,7 @@
 #include <sys/socket.h>
 #include <net/if.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_l1l2.h>
 #include <i4b/include/i4b_l2l3.h>
diff --git a/sys/i4b/layer2/i4b_util.c b/sys/i4b/layer2/i4b_util.c
index 0569a84..511df7d 100644
--- a/sys/i4b/layer2/i4b_util.c
+++ b/sys/i4b/layer2/i4b_util.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,19 +27,14 @@
  *	i4b_util.c - layer 2 utility routines
  *	-------------------------------------
  *
- *	$Id: i4b_util.c,v 1.26 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Mon May 29 16:55:35 2000]
+ *      last edit-date: [Sat Mar  9 17:55:03 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq921.h"
-#else
-#define	NI4BQ921	1
-#endif
+
 #if NI4BQ921 > 0
 
 #include <sys/param.h>
@@ -48,16 +43,7 @@
 #include <sys/socket.h>
 #include <net/if.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_l1l2.h>
diff --git a/sys/i4b/layer3/i4b_l3fsm.c b/sys/i4b/layer3/i4b_l3fsm.c
index cde6e7c..77b3204 100644
--- a/sys/i4b/layer3/i4b_l3fsm.c
+++ b/sys/i4b/layer3/i4b_l3fsm.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,38 +27,23 @@
  *	i4b_l3fsm.c - layer 3 FSM
  *	-------------------------
  *
- *	$Id: i4b_l3fsm.c,v 1.22 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Thu Oct 12 17:58:35 2000]
+ *      last edit-date: [Sat Mar  9 19:34:39 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq931.h"
-#else
-#define	NI4BQ931	1
-#endif
+
 #if NI4BQ931 > 0
 
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/mbuf.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_ioctl.h>
 #include <machine/i4b_cause.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#include <i4b/i4b_cause.h>
-#endif
 
 #include <i4b/include/i4b_l2l3.h>
 #include <i4b/include/i4b_l3l4.h>
@@ -69,7 +54,6 @@
 
 #include <i4b/layer4/i4b_l4.h>
 
-
 static void F_00A(call_desc_t *cd), F_00H(call_desc_t *cd), F_00I(call_desc_t *cd);
 static void F_00J(call_desc_t *cd);
 
diff --git a/sys/i4b/layer3/i4b_l3fsm.h b/sys/i4b/layer3/i4b_l3fsm.h
index 0b1c76d..fbb7c37 100644
--- a/sys/i4b/layer3/i4b_l3fsm.h
+++ b/sys/i4b/layer3/i4b_l3fsm.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *      i4b_l3fsm.c - layer 3 FSM
  *      -------------------------
  * 
- *	$Id: i4b_l3fsm.h,v 1.8 2000/04/27 09:25:22 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Thu Apr 27 11:07:16 2000]
+ *      last edit-date: [Sat Mar  9 19:34:51 2002]
  *
  *---------------------------------------------------------------------------*/
 
diff --git a/sys/i4b/layer3/i4b_l3timer.c b/sys/i4b/layer3/i4b_l3timer.c
index add27ad..ec408b6 100644
--- a/sys/i4b/layer3/i4b_l3timer.c
+++ b/sys/i4b/layer3/i4b_l3timer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,19 +27,14 @@
  *	i4b_l3timer.c - timer and timeout handling for layer 3
  *	------------------------------------------------------
  *
- *	$Id: i4b_l3timer.c,v 1.17 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Thu Aug 24 12:49:50 2000]
+ *      last edit-date: [Sat Mar  9 19:35:31 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq931.h"
-#else
-#define	NI4BQ931	1
-#endif
+
 #if NI4BQ931 > 0
 
 #include <sys/param.h>
@@ -47,17 +42,8 @@
 #include <sys/systm.h>
 #include <sys/mbuf.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_ioctl.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_l3l4.h>
@@ -65,7 +51,6 @@
 #include <i4b/layer3/i4b_l3.h>
 #include <i4b/layer3/i4b_l3fsm.h>
 
-
 /*---------------------------------------------------------------------------*
  *	stop all layer 3 timers
  *---------------------------------------------------------------------------*/
diff --git a/sys/i4b/layer3/i4b_l4if.c b/sys/i4b/layer3/i4b_l4if.c
index 3681219..34ddad8 100644
--- a/sys/i4b/layer3/i4b_l4if.c
+++ b/sys/i4b/layer3/i4b_l4if.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,38 +27,23 @@
  *	i4b_l4if.c - Layer 3 interface to Layer 4
  *	-------------------------------------------
  *
- *	$Id: i4b_l4if.c,v 1.27 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Fri Jun  2 14:32:19 2000]
+ *      last edit-date: [Sat Mar  9 19:36:08 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq931.h"
-#else
-#define	NI4BQ931	1
-#endif
+
 #if NI4BQ931 > 0
 
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/mbuf.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_ioctl.h>
 #include <machine/i4b_cause.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#include <i4b/i4b_cause.h>
-#endif
 
 #include <i4b/include/i4b_l2l3.h>
 #include <i4b/include/i4b_l3l4.h>
diff --git a/sys/i4b/layer3/i4b_q931.c b/sys/i4b/layer3/i4b_q931.c
index c294c7d..89d7a07 100644
--- a/sys/i4b/layer3/i4b_q931.c
+++ b/sys/i4b/layer3/i4b_q931.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,19 +27,13 @@
  *	i4b_q931.c - Q931 received messages handling
  *	--------------------------------------------
  *
- *	$Id: i4b_q931.c,v 1.32 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Mon May 29 16:56:52 2000]
+ *      last edit-date: [Sat Mar  9 19:36:45 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq931.h"
-#else
-#define	NI4BQ931	1
-#endif
 
 #if NI4BQ931 > 0
 
@@ -47,19 +41,9 @@
 #include <sys/systm.h>
 #include <sys/mbuf.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_ioctl.h>
 #include <machine/i4b_cause.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#include <i4b/i4b_cause.h>
-#endif
 
 #include <i4b/include/i4b_isdnq931.h>
 #include <i4b/include/i4b_l3l4.h>
@@ -71,10 +55,6 @@
 
 #include <i4b/layer4/i4b_l4.h>
 
-#ifndef __FreeBSD__
-#define	memcpy(d,s,l)	bcopy(s,d,l)
-#endif
-
 unsigned int i4b_l3_debug = L3_DEBUG_DEFAULT;
 
 ctrl_desc_t ctrl_desc[MAX_CONTROLLERS];	/* controller description array */
diff --git a/sys/i4b/layer3/i4b_q932fac.c b/sys/i4b/layer3/i4b_q932fac.c
index 99a7608..38bf5da 100644
--- a/sys/i4b/layer3/i4b_q932fac.c
+++ b/sys/i4b/layer3/i4b_q932fac.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,43 +27,28 @@
  *	i4b_q932fac.c - Q932 facility handling
  *	--------------------------------------
  *
- *	$Id: i4b_q932fac.c,v 1.11 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Mon May 29 16:57:04 2000]
+ *      last edit-date: [Sat Mar  9 19:37:29 2002]
  *
  *---------------------------------------------------------------------------*/
 
-#ifdef __FreeBSD__
 #include "i4bq931.h"
-#else
-#define	NI4BQ931	1
-#endif
+
 #if NI4BQ931 > 0
 
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/mbuf.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_ioctl.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_l3l4.h>
 
 #include <i4b/layer3/i4b_l3.h>
 #include <i4b/layer3/i4b_q932fac.h>
 
-
 static int do_component(int length);
 static void next_state(int class, int form, int code, int val);
 
diff --git a/sys/i4b/layer3/i4b_q932fac.h b/sys/i4b/layer3/i4b_q932fac.h
index 0c92177..c424fa1 100644
--- a/sys/i4b/layer3/i4b_q932fac.h
+++ b/sys/i4b/layer3/i4b_q932fac.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *	i4b_q932fac.h - Q932 facility handling header file
  *	--------------------------------------------------
  *
- *	$Id: i4b_q932fac.h,v 1.8 2000/04/27 09:25:22 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Thu Apr 27 11:07:52 2000]
+ *      last edit-date: [Sat Mar  9 19:37:46 2002]
  *
  *---------------------------------------------------------------------------
  *
diff --git a/sys/i4b/layer4/i4b_i4bdrv.c b/sys/i4b/layer4/i4b_i4bdrv.c
index 6083e84..7000add 100644
--- a/sys/i4b/layer4/i4b_i4bdrv.c
+++ b/sys/i4b/layer4/i4b_i4bdrv.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *      last edit-date: [Wed Oct 17 13:37:56 2001]
+ *      last edit-date: [Sun Mar 17 09:54:22 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -44,66 +44,27 @@
 #if NI4B > 0
 
 #include <sys/param.h>
-
-#if defined(__FreeBSD__)
 #include <sys/ioccom.h>
 #include <sys/malloc.h>
 #include <sys/uio.h>
-#else
-#include <sys/ioctl.h>
-#endif
-
 #include <sys/kernel.h>
 #include <sys/systm.h>
 #include <sys/conf.h>
 #include <sys/mbuf.h>
 #include <sys/socket.h>
-#if __FreeBSD_version >= 500014
 #include <sys/selinfo.h>
-#else
-#include <sys/select.h>
-#endif
 #include <net/if.h>
 
-#ifdef __NetBSD__
-#include <sys/types.h>
-#endif
-
-#if defined(__FreeBSD__)
 #include "i4bing.h"
-#endif
-
-#ifdef __bsdi__
-#include "ibc.h"
-#else
-#ifdef __FreeBSD__
 #include "i4bisppp.h"
-#else
-#include <net/if_sppp.h>
-#endif
-#endif
-
-#ifdef __FreeBSD__
-
-#if defined(__FreeBSD__) && __FreeBSD__ == 3
-#include "opt_devfs.h"
-#endif
 
 #ifdef DEVFS
 #include <sys/devfsext.h>
 #endif
 
-#endif /* __FreeBSD__*/
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_ioctl.h>
 #include <machine/i4b_cause.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#include <i4b/i4b_cause.h>
-#endif
 
 #include <i4b/include/i4b_l3l4.h>
 #include <i4b/include/i4b_mbuf.h>
@@ -111,9 +72,7 @@
 
 #include <i4b/layer4/i4b_l4.h>
 
-#ifdef OS_USES_POLL
 #include <sys/poll.h>
-#endif
 
 struct selinfo select_rd_info;
 
@@ -122,61 +81,21 @@ static int openflag = 0;
 static int selflag = 0;
 static int readflag = 0;
 
-#if defined(__FreeBSD__) && __FreeBSD__ == 3
-#ifdef DEVFS
-static void *devfs_token;
-#endif
-#endif
-
-#ifndef __FreeBSD__
-
-#define	PDEVSTATIC	/* - not static - */
-PDEVSTATIC void i4battach __P((void));
-PDEVSTATIC int i4bopen __P((dev_t dev, int flag, int fmt, struct thread *td));
-PDEVSTATIC int i4bclose __P((dev_t dev, int flag, int fmt, struct thread *td));
-PDEVSTATIC int i4bread __P((dev_t dev, struct uio *uio, int ioflag));
-
-#ifdef __bsdi__
-PDEVSTATIC int i4bioctl __P((dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td));
-#else
-PDEVSTATIC int i4bioctl __P((dev_t dev, int cmd, caddr_t data, int flag, struct thread *td));
-#endif
-
-#ifdef OS_USES_POLL
-PDEVSTATIC int i4bpoll __P((dev_t dev, int events, struct thread *td));
-#else
-PDEVSTATIC int i4bselect __P((dev_t dev, int rw, struct thread *td));
-#endif
-
-#endif /* #ifndef __FreeBSD__ */
-
-#if BSD > 199306 && defined(__FreeBSD__)
-
-#define PDEVSTATIC	static
-
-PDEVSTATIC	d_open_t	i4bopen;
-PDEVSTATIC	d_close_t	i4bclose;
-PDEVSTATIC	d_read_t	i4bread;
-PDEVSTATIC	d_ioctl_t	i4bioctl;
-
-#ifdef OS_USES_POLL
-PDEVSTATIC	d_poll_t	i4bpoll;
-#define POLLFIELD		i4bpoll
-#else
-PDEVSTATIC	d_select_t	i4bselect;
-#define POLLFIELD		i4bselect
-#endif
+static	d_open_t	i4bopen;
+static	d_close_t	i4bclose;
+static	d_read_t	i4bread;
+static	d_ioctl_t	i4bioctl;
+static	d_poll_t	i4bpoll;
 
 #define CDEV_MAJOR 60
 
-#if defined(__FreeBSD__) && __FreeBSD__ >= 4
 static struct cdevsw i4b_cdevsw = {
 	/* open */      i4bopen,
 	/* close */     i4bclose,
 	/* read */      i4bread,
 	/* write */     nowrite,
 	/* ioctl */     i4bioctl,
-	/* poll */      POLLFIELD,
+	/* poll */      i4bpoll,
 	/* mmap */      nommap,
 	/* strategy */  nostrategy,
 	/* name */      "i4b",
@@ -185,97 +104,38 @@ static struct cdevsw i4b_cdevsw = {
 	/* psize */     nopsize,
 	/* flags */     0,
 };
-#else
-static struct cdevsw i4b_cdevsw = {
-	i4bopen,	i4bclose,	i4bread,	nowrite,
-	i4bioctl,	nostop,		nullreset,	nodevtotty,
-	POLLFIELD,	nommap,		NULL,		"i4b", NULL,	-1
-};
-#endif
 
-PDEVSTATIC void i4battach(void *);
+static void i4battach(void *);
 PSEUDO_SET(i4battach, i4b_i4bdrv);
 
 static void
 i4b_drvinit(void *unused)
 {
-#if defined(__FreeBSD__) && __FreeBSD__ >= 4
 	cdevsw_add(&i4b_cdevsw);
-#else
-	static int i4b_devsw_installed = 0;
-	dev_t dev;
-
-	if( ! i4b_devsw_installed )
-	{
-		dev = makedev(CDEV_MAJOR,0);
-		cdevsw_add(&dev,&i4b_cdevsw,NULL);
-		i4b_devsw_installed = 1;
-	}
-#endif
 }
 
 SYSINIT(i4bdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,i4b_drvinit,NULL)
 
-#endif /* BSD > 199306 && defined(__FreeBSD__) */
-
-#ifdef __bsdi__
-#include <sys/device.h>
-int i4bmatch(struct device *parent, struct cfdata *cf, void *aux);
-void dummy_i4battach(struct device*, struct device *, void *);
-
-#define CDEV_MAJOR 65
-
-static struct cfdriver i4bcd =
-	{ NULL, "i4b", i4bmatch, dummy_i4battach, DV_DULL,
-	  sizeof(struct cfdriver) };
-struct devsw i4bsw = 
-	{ &i4bcd,
-	  i4bopen,	i4bclose,	i4bread,	nowrite,
-	  i4bioctl,	i4bselect,	nommap,		nostrat,
-	  nodump,	nopsize,	0,		nostop
-};
-
-int
-i4bmatch(struct device *parent, struct cfdata *cf, void *aux)
-{
-	printf("i4bmatch: aux=0x%x\n", aux);
-	return 1;
-}
-void
-dummy_i4battach(struct device *parent, struct device *self, void *aux)
-{
-	printf("dummy_i4battach: aux=0x%x\n", aux);
-}
-#endif /* __bsdi__ */
-
 /*---------------------------------------------------------------------------*
  *	interface attach routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC void
-#ifdef __FreeBSD__
+static void
 i4battach(void *dummy)
-#else
-i4battach()
-#endif
 {
 	printf("i4b: ISDN call control device attached\n");
 
 	i4b_rdqueue.ifq_maxlen = IFQ_MAXLEN;
 
-#if defined(__FreeBSD__) && __FreeBSD__ > 4	
 	if(!mtx_initialized(&i4b_rdqueue.ifq_mtx))
 		mtx_init(&i4b_rdqueue.ifq_mtx, "i4b_rdqueue", MTX_DEF);
-#endif
 
-#if defined(__FreeBSD__)
 	make_dev(&i4b_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "i4b");
-#endif
 }
 
 /*---------------------------------------------------------------------------*
  *	i4bopen - device driver open routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4bopen(dev_t dev, int flag, int fmt, struct thread *td)
 {
 	int x;
@@ -297,7 +157,7 @@ i4bopen(dev_t dev, int flag, int fmt, struct thread *td)
 /*---------------------------------------------------------------------------*
  *	i4bclose - device driver close routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4bclose(dev_t dev, int flag, int fmt, struct thread *td)
 {
 	int x = splimp();	
@@ -311,7 +171,7 @@ i4bclose(dev_t dev, int flag, int fmt, struct thread *td)
 /*---------------------------------------------------------------------------*
  *	i4bread - device driver read routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4bread(dev_t dev, struct uio *uio, int ioflag)
 {
 	struct mbuf *m;
@@ -326,13 +186,10 @@ i4bread(dev_t dev, struct uio *uio, int ioflag)
 	while(IF_QEMPTY(&i4b_rdqueue))
 	{
 		readflag = 1;
-#if defined (__FreeBSD__) && __FreeBSD__ > 4		
+
 		error = msleep((caddr_t) &i4b_rdqueue, &i4b_rdqueue.ifq_mtx,
 			(PZERO + 1) | PCATCH, "bird", 0);
-#else
-		error = tsleep((caddr_t) &i4b_rdqueue, (PZERO + 1) | PCATCH,
-			"bird", 0);
-#endif
+
 		if (error != 0) {
 			IF_UNLOCK(&i4b_rdqueue);
 			splx(x);
@@ -359,14 +216,8 @@ i4bread(dev_t dev, struct uio *uio, int ioflag)
 /*---------------------------------------------------------------------------*
  *	i4bioctl - device driver ioctl routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
-#if defined (__FreeBSD_version) && __FreeBSD_version >= 300003
-i4bioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
-#elif defined(__bsdi__)
+static int
 i4bioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
-#else
-i4bioctl(dev_t dev, int cmd, caddr_t data, int flag, struct thread *td)
-#endif
 {
 	call_desc_t *cd;
 	int error = 0;
@@ -921,44 +772,10 @@ diag_done:
 	return(error);
 }
 
-#ifdef OS_USES_SELECT
-
-/*---------------------------------------------------------------------------*
- *	i4bselect - device driver select routine
- *---------------------------------------------------------------------------*/
-PDEVSTATIC int
-i4bselect(dev_t dev, int rw, struct thread *td)
-{
-	int x;
-	
-	if(minor(dev))
-		return(ENODEV);
-
-	switch(rw)
-	{
-		case FREAD:
-			if(!IF_QEMPTY(&i4b_rdqueue))
-				return(1);
-			x = splimp();
-			selrecord(td, &select_rd_info);
-			selflag = 1;
-			splx(x);
-			return(0);
-			break;
-
-		case FWRITE:
-			return(1);
-			break;
-	}
-	return(0);
-}
-
-#else /* OS_USES_SELECT */
-
 /*---------------------------------------------------------------------------*
  *	i4bpoll - device driver poll routine
  *---------------------------------------------------------------------------*/
-PDEVSTATIC int
+static int
 i4bpoll(dev_t dev, int events, struct thread *td)
 {
 	int x;
@@ -985,8 +802,6 @@ i4bpoll(dev_t dev, int events, struct thread *td)
 	return(0);
 }
 
-#endif /* OS_USES_SELECT */
-
 /*---------------------------------------------------------------------------*
  *	i4bputqueue - put message into queue to userland
  *---------------------------------------------------------------------------*/
diff --git a/sys/i4b/layer4/i4b_l4.c b/sys/i4b/layer4/i4b_l4.c
index 4981b96..0980862 100644
--- a/sys/i4b/layer4/i4b_l4.c
+++ b/sys/i4b/layer4/i4b_l4.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -29,7 +29,7 @@
  *
  * $FreeBSD$
  *
- *      last edit-date: [Thu Oct 18 13:31:22 2001]
+ *      last edit-date: [Sat Mar  9 19:46:26 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -43,47 +43,20 @@
 #include <sys/systm.h>
 #include <sys/mbuf.h>
 
-#ifdef __NetBSD__
-#include <sys/types.h>
-#endif
-
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#if defined(__FreeBSD__)
 #include "i4bing.h"
-#endif
-
-#ifdef __bsdi__
-#define NI4BISPPP 0
-#include "ibc.h"
-#else
 #include "i4bisppp.h"
-#endif
-
 #include "i4brbch.h"
 #include "i4btel.h"
 
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_ioctl.h>
 #include <machine/i4b_cause.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#include <i4b/i4b_cause.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_l3l4.h>
 #include <i4b/include/i4b_mbuf.h>
 #include <i4b/layer4/i4b_l4.h>
 
-#if !defined(__FreeBSD__) && !defined(__NetBSD__)
-#define memcpy(dst, src, len)	bcopy((src), (dst), (len))
-#endif
-
 unsigned int i4b_l4_debug = L4_DEBUG_DEFAULT;
 
 struct ctrl_type_desc ctrl_types[CTRL_NUMTYPES] = { { NULL, NULL} };
@@ -96,6 +69,7 @@ static void i4b_idle_check_var_unit(call_desc_t *cd);
 static void i4b_l4_setup_timeout_fix_unit(call_desc_t *cd);
 static void i4b_l4_setup_timeout_var_unit(call_desc_t *cd);
 static time_t i4b_get_idletime(call_desc_t *cd);
+
 #if NI4BISPPP > 0
 extern time_t i4bisppp_idletime(int);
 #endif
@@ -654,7 +628,7 @@ i4b_link_bchandrvr(call_desc_t *cd)
 			break;
 #endif
 
-#if defined(__bsdi__) && NIBC > 0
+#if NIBC > 0
 		case BDRV_IBC:
 			cd->dlt = ibc_ret_linktab(cd->driver_unit);
 			break;
@@ -708,7 +682,7 @@ i4b_link_bchandrvr(call_desc_t *cd)
 			break;
 #endif
 
-#if defined(__bsdi__) && NIBC > 0
+#if NIBC > 0
 		case BDRV_IBC:
 			ibc_set_linktab(cd->driver_unit, cd->ilt);
 			break;
@@ -1082,11 +1056,9 @@ i4b_idle_check_var_unit(call_desc_t *cd)
 	case IST_CHECK:
 		if( i4b_get_idletime(cd) > (SECOND - cd->shorthold_data.idle_time))
 		{	/* activity detected */
-#if defined(__FreeBSD_version) && __FreeBSD_version >= 300001
+			/* check again in one second */		
 			cd->idle_timeout_handle =
-#endif
-			/* check again in one second */
-			START_TIMER(cd->idle_timeout_handle, i4b_idle_check, cd, hz);
+				START_TIMER (cd->idle_timeout_handle, i4b_idle_check, cd, hz);
 			cd->timeout_active = 1;
 			cd->idletime_state = IST_CHECK;
 			NDBGL4(L4_TIMO, "%ld: outgoing-call, var idle timeout - activity at %ld, continuing", (long)SECOND, (long)i4b_get_idletime(cd));
diff --git a/sys/i4b/layer4/i4b_l4mgmt.c b/sys/i4b/layer4/i4b_l4mgmt.c
index 183f751..17bf29a 100644
--- a/sys/i4b/layer4/i4b_l4mgmt.c
+++ b/sys/i4b/layer4/i4b_l4mgmt.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *	i4b_l4mgmt.c - layer 4 calldescriptor management utilites
  *	-----------------------------------------------------------
  *
- *	$Id: i4b_l4mgmt.c,v 1.34 2000/09/01 14:11:51 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Fri Oct 13 15:58:34 2000]
+ *      last edit-date: [Sat Mar  9 19:48:32 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -43,17 +41,8 @@
 #include <sys/systm.h>
 #include <sys/mbuf.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_ioctl.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_l3l4.h>
 #include <i4b/include/i4b_global.h>
@@ -66,9 +55,7 @@ static unsigned int get_cdid(void);
 
 int nctrl;				/* number of attached controllers */
 
-#if (defined(__NetBSD__) && __NetBSD_Version__ >= 104230000) || defined(__FreeBSD__)
 void i4b_init_callout(call_desc_t *);
-#endif
 
 /*---------------------------------------------------------------------------*
  *      return a new unique call descriptor id
@@ -149,9 +136,7 @@ reserve_cd(void)
 	if(cd == NULL)
 		panic("reserve_cd: no free call descriptor available!");
 
-#if (defined(__NetBSD__) && __NetBSD_Version__ >= 104230000) || defined(__FreeBSD__)
 	i4b_init_callout(cd);
-#endif
 
 	return(cd);
 }
@@ -204,9 +189,9 @@ cd_by_cdid(unsigned int cdid)
 		{
 			NDBGL4(L4_MSG, "found cdid - index=%d cdid=%u cr=%d",
 					i, call_desc[i].cdid, call_desc[i].cr);
-#if (defined(__NetBSD__) && __NetBSD_Version__ >= 104230000) || defined(__FreeBSD__)
+
 			i4b_init_callout(&call_desc[i]);
-#endif
+
 			return(&(call_desc[i]));
 		}
 	}
@@ -235,9 +220,9 @@ cd_by_unitcr(int unit, int cr, int crf)
 	  {
 	    NDBGL4(L4_MSG, "found cd, index=%d cdid=%u cr=%d",
 			i, call_desc[i].cdid, call_desc[i].cr);
-#if (defined(__NetBSD__) && __NetBSD_Version__ >= 104230000) || defined(__FreeBSD__)
+
 	    i4b_init_callout(&call_desc[i]);
-#endif
+
 	    return(&(call_desc[i]));
 	  }
 	}
@@ -260,22 +245,12 @@ get_rand_cr(int unit)
 	{
 		int found = 1;
 		
-#if defined(__FreeBSD__)
-
 #ifdef RANDOMDEV
 		read_random((char *)&val, sizeof(val));
 #else
 		val = (u_char)random();
 #endif /* RANDOMDEV */
 
-#else
-		val |= unit+i;
-		val <<= i;
-		val ^= (time.tv_sec >> 8) ^ time.tv_usec;
-		val <<= i;
-		val ^= time.tv_sec ^ (time.tv_usec >> 8);
-#endif
-
 		retval = val & 0x7f;
 		
 		if(retval == 0 || retval == 0x7f)
@@ -300,13 +275,11 @@ get_rand_cr(int unit)
 /*---------------------------------------------------------------------------*
  *	initialize the callout handles for FreeBSD
  *---------------------------------------------------------------------------*/
-#if (defined(__NetBSD__) && __NetBSD_Version__ >= 104230000) || defined(__FreeBSD__)
 void
 i4b_init_callout(call_desc_t *cd)
 {
 	if(cd->callouts_inited == 0)
 	{
-#ifdef __FreeBSD__
 		callout_handle_init(&cd->idle_timeout_handle);
 		callout_handle_init(&cd->T303_callout);
 		callout_handle_init(&cd->T305_callout);
@@ -315,20 +288,9 @@ i4b_init_callout(call_desc_t *cd)
 		callout_handle_init(&cd->T310_callout);
 		callout_handle_init(&cd->T313_callout);
 		callout_handle_init(&cd->T400_callout);
-#else
-		callout_init(&cd->idle_timeout_handle);
-		callout_init(&cd->T303_callout);
-		callout_init(&cd->T305_callout);
-		callout_init(&cd->T308_callout);
-		callout_init(&cd->T309_callout);
-		callout_init(&cd->T310_callout);
-		callout_init(&cd->T313_callout);
-		callout_init(&cd->T400_callout);
-#endif
 		cd->callouts_inited = 1;
 	}
 }
-#endif
 
 /*---------------------------------------------------------------------------*
  *      daemon is attached
diff --git a/sys/i4b/layer4/i4b_l4timer.c b/sys/i4b/layer4/i4b_l4timer.c
index 7710ad5..327ad92 100644
--- a/sys/i4b/layer4/i4b_l4timer.c
+++ b/sys/i4b/layer4/i4b_l4timer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
+ * 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
@@ -27,11 +27,9 @@
  *	i4b_l4timer.c - timer and timeout handling for layer 4
  *	--------------------------------------------------------
  *
- *	$Id: i4b_l4timer.c,v 1.18 2000/08/24 11:48:58 hm Exp $ 
- *
  * $FreeBSD$
  *
- *      last edit-date: [Thu Aug 24 12:50:17 2000]
+ *      last edit-date: [Sat Mar  9 19:49:13 2002]
  *
  *---------------------------------------------------------------------------*/
 
@@ -43,17 +41,8 @@
 #include <sys/kernel.h>
 #include <sys/systm.h>
 
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
-#include <sys/callout.h>
-#endif
-
-#ifdef __FreeBSD__
 #include <machine/i4b_debug.h>
 #include <machine/i4b_ioctl.h>
-#else
-#include <i4b/i4b_debug.h>
-#include <i4b/i4b_ioctl.h>
-#endif
 
 #include <i4b/include/i4b_global.h>
 #include <i4b/include/i4b_l3l4.h>