kern/99200: SMP-Kernel crashes reliably when Bluetooth connection speeds up

lurca at okolar.net lurca at okolar.net
Tue Jun 20 11:00:33 UTC 2006


>Number:         99200
>Category:       kern
>Synopsis:       SMP-Kernel crashes reliably when Bluetooth connection speeds up
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jun 20 11:00:31 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Ralf Stickman <lurca at okolar.net>
>Release:        FreeBSD 6.1-RELEASE i386
>Organization:
Friends of Gravitation, Section Southwest
>Environment:
System: FreeBSD diego.castor.occ 6.1-RELEASE FreeBSD 6.1-RELEASE #0: Tue Jun 6 15:18:50 GMT 2006 root at diego.castor.occ:/usr/src/sys/i386/compile/DIEGO4-s i386

Mainboard Tyan Tiger 100 / Bluetooth device Dlink DBT-120 (USB)

>Description:
Medium fast data transfers over a Bluetooth connection make an SMP-Kernel freeze
and/or reboot. The BT connection works at first glance; it crashes only at higher
transmission rates without any messages to syslogd.
6.0-Release SMP-Kernel shows the same behaviour; 6.1-Release seems to be a little bit
more stable.


>How-To-Repeat:
Do the transmission again.

>Fix:

Remove "options SMP".

--- dmesg.boot begins here ---
--- this Kernel works fine ----
Copyright (c) 1992-2006 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
FreeBSD 6.1-RELEASE #0: Tue Jun  6 15:18:50 GMT 2006
    root at diego.castor.occ:/usr/src/sys/i386/compile/DIEGO4-s
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Pentium II/Pentium II Xeon/Celeron (350.80-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x652  Stepping = 2
  Features=0x183fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
real memory  = 469762048 (448 MB)
avail memory = 454524928 (433 MB)
MPTable: <INTEL    440GX       >
ioapic0: Assuming intbase of 0
ioapic0 <Version 1.1> irqs 0-23 on motherboard
cpu0 on motherboard
pcib0: <MPTable Host-PCI bridge> pcibus 0 on motherboard
pci0: <PCI bus> on pcib0
agp0: <Intel 82443BX (440 BX) host to PCI bridge> mem 0xf8000000-0xfbffffff at device 0.0 on pci0
pcib1: <MPTable PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX4 UDMA33 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf at device 7.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0xef80-0xef9f irq 19 at device 7.2 on pci0
uhci0: [GIANT-LOCKED]
usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
pci0: <bridge> at device 7.3 (no driver attached)
pcm0: <Creative CT5880-C> port 0xef00-0xef3f irq 16 at device 16.0 on pci0
pcm0: <SigmaTel STAC9721/23 AC97 Codec>
pcm0: <Playback: DAC2 / Record: ADC>
rl0: <RealTek 8139 10/100BaseTX> port 0xe400-0xe4ff mem 0xfebffe00-0xfebffeff irq 17 at device 17.0 on pci0
miibus0: <MII bus> on rl0
rlphy0: <RealTek internal media interface> on miibus0
rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl0: Ethernet address: 00:50:bf:d5:0b:71
rl1: <RealTek 8139 10/100BaseTX> port 0xe000-0xe0ff mem 0xfebffd00-0xfebffdff irq 18 at device 18.0 on pci0
miibus1: <MII bus> on rl1
rlphy1: <RealTek internal media interface> on miibus1
rlphy1:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl1: Ethernet address: 00:50:22:b5:69:dd
sym0: <875> port 0xe800-0xe8ff mem 0xfebfff00-0xfebfffff,0xfebfe000-0xfebfefff irq 19 at device 19.0 on pci0
sym0: Symbios NVRAM, ID 7, Fast-20, SE, parity checking
sym0: open drain IRQ line driver, using on-chip SRAM
sym0: using LOAD/STORE-based firmware.
sym0: SCAN AT BOOT disabled for targets 3 8 9 10 11 12 13 14 15.
sym0: SCAN FOR LUNS disabled for targets 3 8 9 10 11 12 13 14 15.
sym0: [GIANT-LOCKED]
rl2: <RealTek 8139 10/100BaseTX> port 0xee00-0xeeff mem 0xfebffc00-0xfebffcff irq 16 at device 20.0 on pci0
miibus2: <MII bus> on rl2
rlphy2: <RealTek internal media interface> on miibus2
rlphy2:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl2: Ethernet address: 00:50:22:d3:d3:a7
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xc7fff,0xc8000-0xca7ff on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model Generic PS/2 mouse, device ID 0
fdc0: <Enhanced floppy controller> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <12 virtual consoles, flags=0x300>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
unknown: <PNP0c01> can't assign resources (memory)
unknown: <PNP0303> can't assign resources (port)
unknown: <PNP0c02> can't assign resources (port)
unknown: <PNP0501> can't assign resources (port)
unknown: <PNP0501> can't assign resources (port)
unknown: <PNP0400> can't assign resources (port)
unknown: <PNP0700> can't assign resources (port)
unknown: <PNP0f13> can't assign resources (irq)
ubt0: vendor 0x0a12 product 0x0001, rev 1.10/5.25, addr 2
ubt0: vendor 0x0a12 product 0x0001, rev 1.10/5.25, addr 2
ubt0: Interface 0 endpoints: interrupt=0x81, bulk-in=0x82, bulk-out=0x2
ubt0: Interface 1 (alt.config 5) endpoints: isoc-in=0x83, isoc-out=0x3; wMaxPacketSize=49; nframes=6, buffer size=294
Timecounter "TSC" frequency 350797319 Hz quality 800
Timecounters tick every 1.000 msec
i4brbch: 2 raw B channel access device(s) attached
i4bctl: ISDN system control port attached
i4b: ISDN call control device attached
i4btrc: 2 ISDN trace device(s) attached
ipfw2 (+ipv6) initialized, divert loadable, rule-based forwarding disabled, default to deny, logging limited to 20 packets/entry by default
Waiting 5 seconds for SCSI devices to settle
(noperiph:sym0:0:-1:-1): SCSI BUS reset delivered.
ad0: 78533MB <HDS722580VLAT20 V32OA60A> at ata0-master UDMA33
da0 at sym0 bus 0 target 0 lun 0
da0: <IBM DCAS-34330W S65A> Fixed Direct Access SCSI-2 device 
da0: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
da0: 4134MB (8467200 512 byte sectors: 255H 63S/T 527C)
da1 at sym0 bus 0 target 1 lun 0
da1: <IBM DCAS-32160W S65A> Fixed Direct Access SCSI-2 device 
da1: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
da1: 2063MB (4226725 512 byte sectors: 255H 63S/T 263C)
cd0 at sym0 bus 0 target 4 lun 0
cd0: <TEAC CD-R55S 1.0N> Removable CD-ROM SCSI-2 device 
cd0: 10.000MB/s transfers (10.000MHz, offset 15)
cd0: Attempt to query device size failed: NOT READY, Medium not present
Trying to mount root from ufs:/dev/ad0s1a
bridge0: Ethernet address: ac:de:48:4e:8a:2f
--- dmesg.boot ends here ---
--note: ISDN device is not installed


--- DIEGO4b begins here ---
--THIS KERNEL crashes; dmesg is from running non-smp-kernel !!--
--dmesg from this one currently not available - looked identical
--to the one above (except ISDN not showing up)

machine		i386
#cpu		I586_CPU
cpu		I686_CPU
ident		DIEGO4b

# To statically compile in device wiring instead of /boot/device.hints
#hints		"GENERIC.hints"		# Default places to look for devices.

#makeoptions	DEBUG=-g		# Build kernel with gdb(1) debug symbols

#options 	SCHED_ULE		# ULE scheduler
options 	SCHED_4BSD		# 4BSD scheduler
options 	PREEMPTION		# Enable kernel thread preemption
options 	INET			# InterNETworking
#options 	INET6			# IPv6 communications protocols
options 	FFS			# Berkeley Fast Filesystem
options 	SOFTUPDATES		# Enable FFS soft updates support
options 	UFS_ACL			# Support for access control lists
options 	UFS_DIRHASH		# Improve performance on big directories
#options 	MD_ROOT			# MD is a potential root device
options 	NFSCLIENT		# Network Filesystem Client
options 	NFSSERVER		# Network Filesystem Server
#options 	NFS_ROOT		# NFS usable as /, requires NFSCLIENT
#options 	MSDOSFS			# MSDOS Filesystem
#options 	CD9660			# ISO 9660 Filesystem
options 	PROCFS			# Process filesystem (requires PSEUDOFS)
options 	PSEUDOFS		# Pseudo-filesystem framework
options 	GEOM_GPT		# GUID Partition Tables.
options 	COMPAT_43		# Compatible with BSD 4.3 [KEEP THIS!]
options 	COMPAT_FREEBSD4		# Compatible with FreeBSD4
options 	COMPAT_FREEBSD5		# Compatible with FreeBSD5
options 	SCSI_DELAY=5000		# Delay (in ms) before probing SCSI
#options 	KTRACE			# ktrace(1) support
options 	SYSVSHM			# SYSV-style shared memory
options 	SYSVMSG			# SYSV-style message queues
options 	SYSVSEM			# SYSV-style semaphores
options 	_KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
#options 	AHC_REG_PRETTY_PRINT	# Print register bitfields in debug
					# output.  Adds ~128k to driver.
#options 	AHD_REG_PRETTY_PRINT	# Print register bitfields in debug
					# output.  Adds ~215k to driver.
options 	ADAPTIVE_GIANT		# Giant mutex is adaptive.

# To make an SMP kernel, the next two are needed
options 	SMP			# Symmetric MultiProcessor Kernel
device		apic			# I/O APIC

device if_bridge

options	IPFIREWALL
options	IPFIREWALL_VERBOSE
options	IPFIREWALL_VERBOSE_LIMIT=20
options	IPDIVERT
options	DUMMYNET
options	HZ=1000
options	NETGRAPH

# Bus support.
device isa
#device		eisa
device		pci

# Floppy drives
device		fdc

# ATA and ATAPI devices
device		ata
device		atadisk		# ATA disk drives
#device		ataraid		# ATA RAID drives
device		atapicd		# ATAPI CDROM drives
#device		atapifd		# ATAPI floppy drives
#device		atapist		# ATAPI tape drives
options 	ATA_STATIC_ID	# Static device numbering

# SCSI Controllers
#device		ahb		# EISA AHA1742 family
#device		ahc		# AHA2940 and onboard AIC7xxx devices
#device		ahd		# AHA39320/29320 and onboard AIC79xx devices
#device		amd		# AMD 53C974 (Tekram DC-390(T))
#device		isp		# Qlogic family
#device 	ispfw		# Firmware for QLogic HBAs- normally a module
#device		mpt		# LSI-Logic MPT-Fusion
#device		ncr		# NCR/Symbios Logic
device		sym		# NCR/Symbios Logic (newer chipsets + those of `ncr')
device		trm		# Tekram DC395U/UW/F DC315U adapters

#device		adv		# Advansys SCSI adapters
#device		adw		# Advansys wide SCSI adapters
#device		aha		# Adaptec 154x SCSI adapters
#device		aic		# Adaptec 15[012]x SCSI adapters, AIC-6[23]60.
#device		bt		# Buslogic/Mylex MultiMaster SCSI adapters

#device		ncv		# NCR 53C500
#device		nsp		# Workbit Ninja SCSI-3
#device		stg		# TMC 18C30/18C50

# SCSI peripherals
device		scbus		# SCSI bus (required for SCSI)
device		ch		# SCSI media changers
device		da		# Direct Access (disks)
device		sa		# Sequential Access (tape etc)
device		cd		# CD
device		pass		# Passthrough device (direct SCSI access)
#device		ses		# SCSI Environmental Services (and SAF-TE)

# RAID controllers interfaced to the SCSI subsystem
#device		amr		# AMI MegaRAID
#device		arcmsr		# Areca SATA II RAID
#device		asr		# DPT SmartRAID V, VI and Adaptec SCSI RAID
#device		ciss		# Compaq Smart RAID 5*
#device		dpt		# DPT Smartcache III, IV - See NOTES for options
#device		hptmv		# Highpoint RocketRAID 182x
#device		iir		# Intel Integrated RAID
#device		ips		# IBM (Adaptec) ServeRAID
#device		mly		# Mylex AcceleRAID/eXtremeRAID
#device		twa		# 3ware 9000 series PATA/SATA RAID

# RAID controllers
#device		aac		# Adaptec FSA RAID
#device		aacp		# SCSI passthrough for aac (requires CAM)
#device		ida		# Compaq Smart RAID
#device		mlx		# Mylex DAC960 family
#device		pst		# Promise Supertrak SX6000
#device		twe		# 3ware ATA RAID

# atkbdc0 controls both the keyboard and the PS/2 mouse
device		atkbdc		# AT keyboard controller
device		atkbd		# AT keyboard
device		psm		# PS/2 mouse

device		vga		# VGA video card driver
device		splash		# Splash screen and screen saver support

# syscons is the default console driver, resembling an SCO console
device		sc
options	SC_PIXEL_MODE
options	SC_HISTORY_SIZE=400
options	MAXCONS=12
#options	FB_INSTALL_CDEV
options VESA

# Enable this for the pcvt (VT220 compatible) console driver
#device		vt
#options 	XSERVER		# support for X server on a vt console
#options 	FAT_CURSOR	# start with block cursor

device		agp		# support several AGP chipsets

# Power management support (see NOTES for more options)
#device		apm
# Add suspend/resume support for the i8254.
device		pmtimer

# PCCARD (PCMCIA) support
# PCMCIA and cardbus bridge support
#device		cbb		# cardbus (yenta) bridge
#device		pccard		# PC Card (16-bit) bus
#device		cardbus		# CardBus (32-bit) bus

# Serial (COM) ports
device		sio		# 8250, 16[45]50 based serial ports

# Parallel port
device		ppc
device		ppbus		# Parallel port bus (required)
device		lpt		# Printer
#device		plip		# TCP/IP over parallel
#device		ppi		# Parallel port interface device
#device		vpo		# Requires scbus and da

# If you've got a "dumb" serial or parallel PCI card that is
# supported by the puc(4) glue driver, uncomment the following
# line to enable it (connects to the sio and/or ppc drivers):
#device		puc

# PCI Ethernet NICs.
#device		de		# DEC/Intel DC21x4x (``Tulip'')
#device		em		# Intel PRO/1000 adapter Gigabit Ethernet Card
#device		ixgb		# Intel PRO/10GbE Ethernet Card
#device		txp		# 3Com 3cR990 (``Typhoon'')
#device		vx		# 3Com 3c590, 3c595 (``Vortex'')

# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device		miibus		# MII bus support
#device		bfe		# Broadcom BCM440x 10/100 Ethernet
#device		bge		# Broadcom BCM570xx Gigabit Ethernet
#device		dc		# DEC/Intel 21143 and various workalikes
device		fxp		# Intel EtherExpress PRO/100B (82557, 82558)
#device		lge		# Level 1 LXT1001 gigabit Ethernet
#device		nge		# NatSemi DP83820 gigabit Ethernet
#device		nve		# nVidia nForce MCP on-board Ethernet Networking
#device		pcn		# AMD Am79C97x PCI 10/100(precedence over 'lnc')
#device		re		# RealTek 8139C+/8169/8169S/8110S
device		rl		# RealTek 8129/8139
#device		sf		# Adaptec AIC-6915 (``Starfire'')
#device		sis		# Silicon Integrated Systems SiS 900/SiS 7016
#device		sk		# SysKonnect SK-984x & SK-982x gigabit Ethernet
#device		ste		# Sundance ST201 (D-Link DFE-550TX)
#device		ti		# Alteon Networks Tigon I/II gigabit Ethernet
#device		tl		# Texas Instruments ThunderLAN
#device		tx		# SMC EtherPower II (83c170 ``EPIC'')
#device		vge		# VIA VT612x gigabit Ethernet
#device		vr		# VIA Rhine, Rhine II
#device		wb		# Winbond W89C840F
#device		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')

# ISA Ethernet NICs.  pccard NICs included.
#device		cs		# Crystal Semiconductor CS89x0 NIC
# 'device ed' requires 'device miibus'
#device		ed		# NE[12]000, SMC Ultra, 3c503, DS8390 cards
#device		ex		# Intel EtherExpress Pro/10 and Pro/10+
#device		ep		# Etherlink III based cards
#device		fe		# Fujitsu MB8696x based cards
#device		ie		# EtherExpress 8/16, 3C507, StarLAN 10 etc.
#device		lnc		# NE2100, NE32-VL Lance Ethernet cards
#device		sn		# SMC's 9000 series of Ethernet chips
#device		xe		# Xircom pccard Ethernet

# ISA devices that use the old ISA shims
#device		le

# Wireless NIC cards
#device		wlan		# 802.11 support
#device		an		# Aironet 4500/4800 802.11 wireless NICs.
#device		awi		# BayStack 660 and others
#device		ral		# Ralink Technology RT2500 wireless NICs.
#device		wi		# WaveLAN/Intersil/Symbol 802.11 wireless NICs.
#device		wl		# Older non 802.11 Wavelan wireless NIC.

# Pseudo devices.
device		loop		# Network loopback
device		random		# Entropy device
device		ether		# Ethernet support
#device		sl		# Kernel SLIP
device		ppp		# Kernel PPP
device		tun		# Packet tunnel.
device		pty		# Pseudo-ttys (telnet etc)
device		md		# Memory "disks"
#device		gif		# IPv6 and IPv4 tunneling
#device		faith		# IPv6-to-IPv4 relaying (translation)

# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
# Note that 'bpf' is required for DHCP.
device		bpf		# Berkeley packet filter

# USB support
device		uhci		# UHCI PCI->USB interface
#device		ohci		# OHCI PCI->USB interface
#device		ehci		# EHCI PCI->USB interface (USB 2.0)
device		usb		# USB Bus (required)
#device		udbp		# USB Double Bulk Pipe devices
device		ugen		# Generic
#device		uhid		# "Human Interface Devices"
#device		ukbd		# Keyboard
#device		ulpt		# Printer
device		umass		# Disks/Mass storage - Requires scbus and da
#device		ums		# Mouse
#device		ural		# Ralink Technology RT2500USB wireless NICs
#device		urio		# Diamond Rio 500 MP3 player
#device		uscanner	# Scanners
# USB Ethernet, requires miibus
#device		aue		# ADMtek USB Ethernet
#device		axe		# ASIX Electronics USB Ethernet
#device		cdce		# Generic USB over Ethernet
#device		cue		# CATC USB Ethernet
#device		kue		# Kawasaki LSI USB Ethernet
#device		rue		# RealTek RTL8150 USB Ethernet

# FireWire support
#device		firewire	# FireWire bus code
#device		sbp		# SCSI over FireWire (Requires scbus and da)
#device		fwe		# Ethernet over FireWire (non-standard!)

device		sound			# "newpcm" sound support
device		snd_es137x
#---ESS
#device		snd_ess		#ESS
#device		snd_sbc			# bridge driver for SB-compatibles

#---------------------------------------------------------------------------
# ISDN4BSD
#
# See /usr/share/examples/isdn/ROADMAP for an introduction to isdn4bsd.
#
# i4b passive ISDN cards support contains the following hardware drivers:
#
#	isic  - Siemens/Infineon ISDN ISAC/HSCX/IPAC chipset driver
#	iwic  - Winbond W6692 PCI bus ISDN S/T interface controller
#	ifpi  - AVM Fritz!Card PCI driver
#	ifpi2  - AVM Fritz!Card PCI version 2 driver
#	ihfc  - Cologne Chip HFC ISA/ISA-PnP chipset driver
#	ifpnp - AVM Fritz!Card PnP driver
#	itjc  - Siemens ISAC / TJNet Tiger300/320 chipset
#
# i4b active ISDN cards support contains the following hardware drivers:
#
#	iavc  - AVM B1 PCI, AVM B1 ISA, AVM T1
#
# Note that the ``options'' (if given) and ``device'' lines must BOTH
# be uncommented to enable support for a given card !
#
# In addition to a hardware driver (and probably an option) the mandatory
# ISDN protocol stack devices and the mandatory support device must be
# enabled as well as one or more devices from the optional devices section.
#
#---------------------------------------------------------------------------
#	ifpi driver for AVM Fritz!Card PCI
#
# AVM Fritz!Card PCI
#->device		ifpi
# AVM Fritz!Card PCI version 2
#device		ifpi2
#
#---------------------------------------------------------------------------
#	ISDN Protocol Stack - mandatory for all hardware drivers
#
# Q.921 / layer 2 - i4b passive cards D channel handling
#->device		i4bq921
#
# Q.931 / layer 3 - i4b passive cards D channel handling
#->device		i4bq931
#
# layer 4 - i4b common passive and active card handling
#->device		i4b
#
#---------------------------------------------------------------------------
#	ISDN devices - mandatory for all hardware drivers
#
# userland driver to do ISDN tracing (for passive cards only)
#->device		i4btrc
#->options 	NI4BTRC=2
#
# userland driver to control the whole thing
#->device		i4bctl
#
#---------------------------------------------------------------------------
#	ISDN devices - optional
#
# userland driver for access to raw B channel
#->device		i4brbch
#->options 	NI4BRBCH=2
#
# userland driver for telephony
#device		i4btel
#options 	NI4BTEL=2
#
# network driver for IP over raw HDLC ISDN
#device		i4bipr
#options 	NI4BIPR=4
# enable VJ header compression detection for ipr i/f
#options 	IPR_VJ
# enable logging of the first n IP packets to isdnd (n=32 here)
#options 	IPR_LOG=32
#
# network driver for sync PPP over ISDN; requires an equivalent
# number of sppp device to be configured
#device		i4bisppp
#options 	NI4BISPPP=4
#
# B-channel interface to the netgraph subsystem
#device		i4bing
#options 	NI4BING=2
--- DIEGO4b ends here ---
>Release-Note:
>Audit-Trail:
>Unformatted:


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