xref: /freebsd/sys/conf/NOTES (revision eb9da1ada8b6b2c74378a5c17029ec5a7fb199e6)
1# $FreeBSD$
2#
3# NOTES -- Lines that can be cut/pasted into kernel and hints configs.
4#
5# Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
6# 'makeoptions', 'hints', etc. go into the kernel configuration that you
7# run config(8) with.
8#
9# Lines that begin with 'hint.' are NOT for config(8), they go into your
10# hints file.  See /boot/device.hints and/or the 'hints' config(8) directive.
11#
12# Please use ``make LINT'' to create an old-style LINT file if you want to
13# do kernel test-builds.
14#
15# This file contains machine independent kernel configuration notes.  For
16# machine dependent notes, look in /sys/<arch>/conf/NOTES.
17#
18
19#
20# NOTES conventions and style guide:
21#
22# Large block comments should begin and end with a line containing only a
23# comment character.
24#
25# To describe a particular object, a block comment (if it exists) should
26# come first.  Next should come device, options, and hints lines in that
27# order.  All device and option lines must be described by a comment that
28# doesn't just expand the device or option name.  Use only a concise
29# comment on the same line if possible.  Very detailed descriptions of
30# devices and subsystems belong in man pages.
31#
32# A space followed by a tab separates 'options' from an option name.  Two
33# spaces followed by a tab separate 'device' from a device name.  Comments
34# after an option or device should use one space after the comment character.
35# To comment out a negative option that disables code and thus should not be
36# enabled for LINT builds, precede 'options' with "#!".
37#
38
39#
40# This is the ``identification'' of the kernel.  Usually this should
41# be the same as the name of your kernel.
42#
43ident		LINT
44
45#
46# The `maxusers' parameter controls the static sizing of a number of
47# internal system tables by a formula defined in subr_param.c.
48# Omitting this parameter or setting it to 0 will cause the system to
49# auto-size based on physical memory.
50#
51maxusers	10
52
53# To statically compile in device wiring instead of /boot/device.hints
54#hints		"LINT.hints"		# Default places to look for devices.
55
56# Use the following to compile in values accessible to the kernel
57# through getenv() (or kenv(1) in userland). The format of the file
58# is 'variable=value', see kenv(1)
59#
60#env		"LINT.env"
61
62#
63# The `makeoptions' parameter allows variables to be passed to the
64# generated Makefile in the build area.
65#
66# CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
67# after most other flags.  Here we use it to inhibit use of non-optimal
68# gcc built-in functions (e.g., memcmp).
69#
70# DEBUG happens to be magic.
71# The following is equivalent to 'config -g KERNELNAME' and creates
72# 'kernel.debug' compiled with -g debugging as well as a normal
73# 'kernel'.  Use 'make install.debug' to install the debug kernel
74# but that isn't normally necessary as the debug symbols are not loaded
75# by the kernel and are not useful there anyway.
76#
77# KERNEL can be overridden so that you can change the default name of your
78# kernel.
79#
80# MODULES_OVERRIDE can be used to limit modules built to a specific list.
81#
82makeoptions	CONF_CFLAGS=-fno-builtin  #Don't allow use of memcmp, etc.
83#makeoptions	DEBUG=-g		#Build kernel with gdb(1) debug symbols
84#makeoptions	KERNEL=foo		#Build kernel "foo" and install "/foo"
85# Only build ext2fs module plus those parts of the sound system I need.
86#makeoptions	MODULES_OVERRIDE="ext2fs sound/sound sound/driver/maestro3"
87makeoptions	DESTDIR=/tmp
88
89#
90# FreeBSD processes are subject to certain limits to their consumption
91# of system resources.  See getrlimit(2) for more details.  Each
92# resource limit has two values, a "soft" limit and a "hard" limit.
93# The soft limits can be modified during normal system operation, but
94# the hard limits are set at boot time.  Their default values are
95# in sys/<arch>/include/vmparam.h.  There are two ways to change them:
96#
97# 1.  Set the values at kernel build time.  The options below are one
98#     way to allow that limit to grow to 1GB.  They can be increased
99#     further by changing the parameters:
100#
101# 2.  In /boot/loader.conf, set the tunables kern.maxswzone,
102#     kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
103#     kern.dflssiz, kern.maxssiz and kern.sgrowsiz.
104#
105# The options in /boot/loader.conf override anything in the kernel
106# configuration file.  See the function init_param1 in
107# sys/kern/subr_param.c for more details.
108#
109
110options 	MAXDSIZ=(1024UL*1024*1024)
111options 	MAXSSIZ=(128UL*1024*1024)
112options 	DFLDSIZ=(1024UL*1024*1024)
113
114#
115# BLKDEV_IOSIZE sets the default block size used in user block
116# device I/O.  Note that this value will be overridden by the label
117# when specifying a block device from a label with a non-0
118# partition blocksize.  The default is PAGE_SIZE.
119#
120options 	BLKDEV_IOSIZE=8192
121
122#
123# MAXPHYS and DFLTPHYS
124#
125# These are the maximal and safe 'raw' I/O block device access sizes.
126# Reads and writes will be split into MAXPHYS chunks for known good
127# devices and DFLTPHYS for the rest. Some applications have better
128# performance with larger raw I/O access sizes. Note that certain VM
129# parameters are derived from these values and making them too large
130# can make an unbootable kernel.
131#
132# The defaults are 64K and 128K respectively.
133options 	DFLTPHYS=(64*1024)
134options 	MAXPHYS=(128*1024)
135
136
137# This allows you to actually store this configuration file into
138# the kernel binary itself. See config(8) for more details.
139#
140options 	INCLUDE_CONFIG_FILE     # Include this file in kernel
141
142#
143# Compile-time defaults for various boot parameters
144#
145options 	BOOTVERBOSE=1
146options 	BOOTHOWTO=RB_MULTIPLE
147
148options 	GEOM_AES		# Don't use, use GEOM_BDE
149options 	GEOM_BDE		# Disk encryption.
150options 	GEOM_BSD		# BSD disklabels
151options 	GEOM_CACHE		# Disk cache.
152options 	GEOM_CONCAT		# Disk concatenation.
153options 	GEOM_ELI		# Disk encryption.
154options 	GEOM_FOX		# Redundant path mitigation
155options 	GEOM_GATE		# Userland services.
156options 	GEOM_JOURNAL		# Journaling.
157options 	GEOM_LABEL		# Providers labelization.
158options 	GEOM_LINUX_LVM		# Linux LVM2 volumes
159options 	GEOM_MAP		# Map based partitioning
160options 	GEOM_MBR		# DOS/MBR partitioning
161options 	GEOM_MIRROR		# Disk mirroring.
162options 	GEOM_MULTIPATH		# Disk multipath
163options 	GEOM_NOP		# Test class.
164options 	GEOM_PART_APM		# Apple partitioning
165options 	GEOM_PART_BSD		# BSD disklabel
166options 	GEOM_PART_BSD64		# BSD disklabel64
167options 	GEOM_PART_EBR		# Extended Boot Records
168options 	GEOM_PART_EBR_COMPAT	# Backward compatible partition names
169options 	GEOM_PART_GPT		# GPT partitioning
170options 	GEOM_PART_LDM		# Logical Disk Manager
171options 	GEOM_PART_MBR		# MBR partitioning
172options 	GEOM_PART_PC98		# PC-9800 disk partitioning
173options 	GEOM_PART_VTOC8		# SMI VTOC8 disk label
174options 	GEOM_PC98		# NEC PC9800 partitioning
175options 	GEOM_RAID		# Soft RAID functionality.
176options 	GEOM_RAID3		# RAID3 functionality.
177options 	GEOM_SHSEC		# Shared secret.
178options 	GEOM_STRIPE		# Disk striping.
179options 	GEOM_SUNLABEL		# Sun/Solaris partitioning
180options 	GEOM_UZIP		# Read-only compressed disks
181options 	GEOM_VINUM		# Vinum logical volume manager
182options 	GEOM_VIRSTOR		# Virtual storage.
183options 	GEOM_VOL		# Volume names from UFS superblock
184options 	GEOM_ZERO		# Performance testing helper.
185
186#
187# The root device and filesystem type can be compiled in;
188# this provides a fallback option if the root device cannot
189# be correctly guessed by the bootstrap code, or an override if
190# the RB_DFLTROOT flag (-r) is specified when booting the kernel.
191#
192options 	ROOTDEVNAME=\"ufs:da0s2e\"
193
194
195#####################################################################
196# Scheduler options:
197#
198# Specifying one of SCHED_4BSD or SCHED_ULE is mandatory.  These options
199# select which scheduler is compiled in.
200#
201# SCHED_4BSD is the historical, proven, BSD scheduler.  It has a global run
202# queue and no CPU affinity which makes it suboptimal for SMP.  It has very
203# good interactivity and priority selection.
204#
205# SCHED_ULE provides significant performance advantages over 4BSD on many
206# workloads on SMP machines.  It supports cpu-affinity, per-cpu runqueues
207# and scheduler locks.  It also has a stronger notion of interactivity
208# which leads to better responsiveness even on uniprocessor machines.  This
209# is the default scheduler.
210#
211# SCHED_STATS is a debugging option which keeps some stats in the sysctl
212# tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
213#
214options 	SCHED_4BSD
215options 	SCHED_STATS
216#options 	SCHED_ULE
217
218#####################################################################
219# SMP OPTIONS:
220#
221# SMP enables building of a Symmetric MultiProcessor Kernel.
222
223# Mandatory:
224options 	SMP			# Symmetric MultiProcessor Kernel
225
226# EARLY_AP_STARTUP releases the Application Processors earlier in the
227# kernel startup process (before devices are probed) rather than at the
228# end.  This is a temporary option for use during the transition from
229# late to early AP startup.
230options		EARLY_AP_STARTUP
231
232# MAXCPU defines the maximum number of CPUs that can boot in the system.
233# A default value should be already present, for every architecture.
234options 	MAXCPU=32
235
236# MAXMEMDOM defines the maximum number of memory domains that can boot in the
237# system.  A default value should already be defined by every architecture.
238options 	MAXMEMDOM=2
239
240# VM_NUMA_ALLOC enables use of memory domain-aware allocation in the VM
241# system.
242options 	VM_NUMA_ALLOC
243
244# DEVICE_NUMA enables reporting of domain affinity of I/O devices via
245# bus_get_domain(), etc.
246options 	DEVICE_NUMA
247
248# ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
249# if the thread that currently owns the mutex is executing on another
250# CPU.  This behavior is enabled by default, so this option can be used
251# to disable it.
252options 	NO_ADAPTIVE_MUTEXES
253
254# ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
255# if the thread that currently owns the rwlock is executing on another
256# CPU.  This behavior is enabled by default, so this option can be used
257# to disable it.
258options 	NO_ADAPTIVE_RWLOCKS
259
260# ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
261# currently owns the sx lock is executing on another CPU.
262# This behavior is enabled by default, so this option can be used to
263# disable it.
264options 	NO_ADAPTIVE_SX
265
266# MUTEX_NOINLINE forces mutex operations to call functions to perform each
267# operation rather than inlining the simple cases.  This can be used to
268# shrink the size of the kernel text segment.  Note that this behavior is
269# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
270# and WITNESS options.
271options 	MUTEX_NOINLINE
272
273# RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
274# operation rather than inlining the simple cases.  This can be used to
275# shrink the size of the kernel text segment.  Note that this behavior is
276# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
277# and WITNESS options.
278options 	RWLOCK_NOINLINE
279
280# SX_NOINLINE forces sx lock operations to call functions to perform each
281# operation rather than inlining the simple cases.  This can be used to
282# shrink the size of the kernel text segment.  Note that this behavior is
283# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
284# and WITNESS options.
285options 	SX_NOINLINE
286
287# SMP Debugging Options:
288#
289# CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
290#	  structure used as backend in callout(9).
291# PREEMPTION allows the threads that are in the kernel to be preempted by
292#	  higher priority [interrupt] threads.  It helps with interactivity
293#	  and allows interrupt threads to run sooner rather than waiting.
294#	  WARNING! Only tested on amd64 and i386.
295# FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
296#	  threads.  Its sole use is to expose race conditions and other
297#	  bugs during development.  Enabling this option will reduce
298#	  performance and increase the frequency of kernel panics by
299#	  design.  If you aren't sure that you need it then you don't.
300#	  Relies on the PREEMPTION option.  DON'T TURN THIS ON.
301# SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
302#	  used to hold active sleep queues as well as sleep wait message
303#	  frequency.
304# TURNSTILE_PROFILING enables rudimentary profiling of the hash table
305#	  used to hold active lock queues.
306# UMTX_PROFILING enables rudimentary profiling of the hash table used
307	  to hold active lock queues.
308# WITNESS enables the witness code which detects deadlocks and cycles
309#         during locking operations.
310# WITNESS_KDB causes the witness code to drop into the kernel debugger if
311#	  a lock hierarchy violation occurs or if locks are held when going to
312#	  sleep.
313# WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
314options 	PREEMPTION
315options 	FULL_PREEMPTION
316options 	WITNESS
317options 	WITNESS_KDB
318options 	WITNESS_SKIPSPIN
319
320# LOCK_PROFILING - Profiling locks.  See LOCK_PROFILING(9) for details.
321options 	LOCK_PROFILING
322# Set the number of buffers and the hash size.  The hash size MUST be larger
323# than the number of buffers.  Hash size should be prime.
324options 	MPROF_BUFFERS="1536"
325options 	MPROF_HASH_SIZE="1543"
326
327# Profiling for the callout(9) backend.
328options 	CALLOUT_PROFILING
329
330# Profiling for internal hash tables.
331options 	SLEEPQUEUE_PROFILING
332options 	TURNSTILE_PROFILING
333options 	UMTX_PROFILING
334
335
336#####################################################################
337# COMPATIBILITY OPTIONS
338
339#
340# Implement system calls compatible with 4.3BSD and older versions of
341# FreeBSD.  You probably do NOT want to remove this as much current code
342# still relies on the 4.3 emulation.  Note that some architectures that
343# are supported by FreeBSD do not include support for certain important
344# aspects of this compatibility option, namely those related to the
345# signal delivery mechanism.
346#
347options 	COMPAT_43
348
349# Old tty interface.
350options 	COMPAT_43TTY
351
352# Note that as a general rule, COMPAT_FREEBSD<n> depends on
353# COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
354
355# Enable FreeBSD4 compatibility syscalls
356options 	COMPAT_FREEBSD4
357
358# Enable FreeBSD5 compatibility syscalls
359options 	COMPAT_FREEBSD5
360
361# Enable FreeBSD6 compatibility syscalls
362options 	COMPAT_FREEBSD6
363
364# Enable FreeBSD7 compatibility syscalls
365options 	COMPAT_FREEBSD7
366
367# Enable FreeBSD9 compatibility syscalls
368options 	COMPAT_FREEBSD9
369
370# Enable FreeBSD10 compatibility syscalls
371options 	COMPAT_FREEBSD10
372
373# Enable Linux Kernel Programming Interface
374options 	COMPAT_LINUXKPI
375
376#
377# These three options provide support for System V Interface
378# Definition-style interprocess communication, in the form of shared
379# memory, semaphores, and message queues, respectively.
380#
381options 	SYSVSHM
382options 	SYSVSEM
383options 	SYSVMSG
384
385
386#####################################################################
387# DEBUGGING OPTIONS
388
389#
390# Compile with kernel debugger related code.
391#
392options 	KDB
393
394#
395# Print a stack trace of the current thread on the console for a panic.
396#
397options 	KDB_TRACE
398
399#
400# Don't enter the debugger for a panic. Intended for unattended operation
401# where you may want to enter the debugger from the console, but still want
402# the machine to recover from a panic.
403#
404options 	KDB_UNATTENDED
405
406#
407# Enable the ddb debugger backend.
408#
409options 	DDB
410
411#
412# Print the numerical value of symbols in addition to the symbolic
413# representation.
414#
415options 	DDB_NUMSYM
416
417#
418# Enable the remote gdb debugger backend.
419#
420options 	GDB
421
422#
423# SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
424# contents of the registered sysctl nodes on the console.  It is disabled by
425# default because it generates excessively verbose console output that can
426# interfere with serial console operation.
427#
428options 	SYSCTL_DEBUG
429
430#
431# Enable textdump by default, this disables kernel core dumps.
432#
433options		TEXTDUMP_PREFERRED
434
435#
436# Enable extra debug messages while performing textdumps.
437#
438options		TEXTDUMP_VERBOSE
439
440#
441# NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
442# resulting kernel.
443options		NO_SYSCTL_DESCR
444
445#
446# MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
447# allocations that are smaller than a page.  The purpose is to isolate
448# different malloc types into hash classes, so that any buffer
449# overruns or use-after-free will usually only affect memory from
450# malloc types in that hash class.  This is purely a debugging tool;
451# by varying the hash function and tracking which hash class was
452# corrupted, the intersection of the hash classes from each instance
453# will point to a single malloc type that is being misused.  At this
454# point inspection or memguard(9) can be used to catch the offending
455# code.
456#
457options 	MALLOC_DEBUG_MAXZONES=8
458
459#
460# DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
461# for the kernel used to detect modify-after-free scenarios.  See the
462# memguard(9) man page for more information on usage.
463#
464options 	DEBUG_MEMGUARD
465
466#
467# DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
468# malloc(9).
469#
470options 	DEBUG_REDZONE
471
472#
473# EARLY_PRINTF enables support for calling a special printf (eprintf)
474# very early in the kernel (before cn_init() has been called).  This
475# should only be used for debugging purposes early in boot.  Normally,
476# it is not defined.  It is commented out here because this feature
477# isn't generally available. And the required eputc() isn't defined.
478#
479#options	EARLY_PRINTF
480
481#
482# KTRACE enables the system-call tracing facility ktrace(2).  To be more
483# SMP-friendly, KTRACE uses a worker thread to process most trace events
484# asynchronously to the thread generating the event.  This requires a
485# pre-allocated store of objects representing trace events.  The
486# KTRACE_REQUEST_POOL option specifies the initial size of this store.
487# The size of the pool can be adjusted both at boottime and runtime via
488# the kern.ktrace_request_pool tunable and sysctl.
489#
490options 	KTRACE			#kernel tracing
491options 	KTRACE_REQUEST_POOL=101
492
493#
494# KTR is a kernel tracing facility imported from BSD/OS.  It is
495# enabled with the KTR option.  KTR_ENTRIES defines the number of
496# entries in the circular trace buffer; it may be an arbitrary number.
497# KTR_BOOT_ENTRIES defines the number of entries during the early boot,
498# before malloc(9) is functional.
499# KTR_COMPILE defines the mask of events to compile into the kernel as
500# defined by the KTR_* constants in <sys/ktr.h>.  KTR_MASK defines the
501# initial value of the ktr_mask variable which determines at runtime
502# what events to trace.  KTR_CPUMASK determines which CPU's log
503# events, with bit X corresponding to CPU X.  The layout of the string
504# passed as KTR_CPUMASK must match a series of bitmasks each of them
505# separated by the "," character (ie:
506# KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF).  KTR_VERBOSE enables
507# dumping of KTR events to the console by default.  This functionality
508# can be toggled via the debug.ktr_verbose sysctl and defaults to off
509# if KTR_VERBOSE is not defined.  See ktr(4) and ktrdump(8) for details.
510#
511options 	KTR
512options 	KTR_BOOT_ENTRIES=1024
513options 	KTR_ENTRIES=(128*1024)
514options 	KTR_COMPILE=(KTR_ALL)
515options 	KTR_MASK=KTR_INTR
516options 	KTR_CPUMASK=0x3
517options 	KTR_VERBOSE
518
519#
520# ALQ(9) is a facility for the asynchronous queuing of records from the kernel
521# to a vnode, and is employed by services such as ktr(4) to produce trace
522# files based on a kernel event stream.  Records are written asynchronously
523# in a worker thread.
524#
525options 	ALQ
526options 	KTR_ALQ
527
528#
529# The INVARIANTS option is used in a number of source files to enable
530# extra sanity checking of internal structures.  This support is not
531# enabled by default because of the extra time it would take to check
532# for these conditions, which can only occur as a result of
533# programming errors.
534#
535options 	INVARIANTS
536
537#
538# The INVARIANT_SUPPORT option makes us compile in support for
539# verifying some of the internal structures.  It is a prerequisite for
540# 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
541# called.  The intent is that you can set 'INVARIANTS' for single
542# source files (by changing the source file or specifying it on the
543# command line) if you have 'INVARIANT_SUPPORT' enabled.  Also, if you
544# wish to build a kernel module with 'INVARIANTS', then adding
545# 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
546# infrastructure without the added overhead.
547#
548options 	INVARIANT_SUPPORT
549
550#
551# The DIAGNOSTIC option is used to enable extra debugging information
552# from some parts of the kernel.  As this makes everything more noisy,
553# it is disabled by default.
554#
555options 	DIAGNOSTIC
556
557#
558# REGRESSION causes optional kernel interfaces necessary only for regression
559# testing to be enabled.  These interfaces may constitute security risks
560# when enabled, as they permit processes to easily modify aspects of the
561# run-time environment to reproduce unlikely or unusual (possibly normally
562# impossible) scenarios.
563#
564options 	REGRESSION
565
566#
567# This option lets some drivers co-exist that can't co-exist in a running
568# system.  This is used to be able to compile all kernel code in one go for
569# quality assurance purposes (like this file, which the option takes it name
570# from.)
571#
572options 	COMPILING_LINT
573
574#
575# STACK enables the stack(9) facility, allowing the capture of kernel stack
576# for the purpose of procinfo(1), etc.  stack(9) will also be compiled in
577# automatically if DDB(4) is compiled into the kernel.
578#
579options 	STACK
580
581#
582# The NUM_CORE_FILES option specifies the limit for the number of core
583# files generated by a particular process, when the core file format
584# specifier includes the %I pattern. Since we only have 1 character for
585# the core count in the format string, meaning the range will be 0-9, the
586# maximum value allowed for this option is 10.
587# This core file limit can be adjusted at runtime via the debug.ncores
588# sysctl.
589#
590options 	NUM_CORE_FILES=5
591
592
593#####################################################################
594# PERFORMANCE MONITORING OPTIONS
595
596#
597# The hwpmc driver that allows the use of in-CPU performance monitoring
598# counters for performance monitoring.  The base kernel needs to be configured
599# with the 'options' line, while the hwpmc device can be either compiled
600# in or loaded as a loadable kernel module.
601#
602# Additional configuration options may be required on specific architectures,
603# please see hwpmc(4).
604
605device		hwpmc			# Driver (also a loadable module)
606options 	HWPMC_DEBUG
607options 	HWPMC_HOOKS		# Other necessary kernel hooks
608
609
610#####################################################################
611# NETWORKING OPTIONS
612
613#
614# Protocol families
615#
616options 	INET			#Internet communications protocols
617options 	INET6			#IPv6 communications protocols
618
619options 	ROUTETABLES=2		# allocated fibs up to 65536. default is 1.
620					# but that would be a bad idea as they are large.
621
622options 	TCP_OFFLOAD		# TCP offload support.
623
624# In order to enable IPSEC you MUST also add device crypto to
625# your kernel configuration
626options 	IPSEC			#IP security (requires device crypto)
627#options 	IPSEC_DEBUG		#debug for IP security
628#
629# #DEPRECATED#
630# Set IPSEC_FILTERTUNNEL to change the default of the sysctl to force packets
631# coming through a tunnel to be processed by any configured packet filtering
632# twice. The default is that packets coming out of a tunnel are _not_ processed;
633# they are assumed trusted.
634#
635# IPSEC history is preserved for such packets, and can be filtered
636# using ipfw(8)'s 'ipsec' keyword, when this option is enabled.
637#
638#options 	IPSEC_FILTERTUNNEL	#filter ipsec packets from a tunnel
639#
640# Set IPSEC_NAT_T to enable NAT-Traversal support.  This enables
641# optional UDP encapsulation of ESP packets.
642#
643options		IPSEC_NAT_T		#NAT-T support, UDP encap of ESP
644
645#
646# SMB/CIFS requester
647# NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
648# options.
649options 	NETSMB			#SMB/CIFS requester
650
651# mchain library. It can be either loaded as KLD or compiled into kernel
652options 	LIBMCHAIN
653
654# libalias library, performing NAT
655options 	LIBALIAS
656
657# flowtable cache
658options 	FLOWTABLE
659
660#
661# SCTP is a NEW transport protocol defined by
662# RFC2960 updated by RFC3309 and RFC3758.. and
663# soon to have a new base RFC and many many more
664# extensions. This release supports all the extensions
665# including many drafts (most about to become RFC's).
666# It is the reference implementation of SCTP
667# and is quite well tested.
668#
669# Note YOU MUST have both INET and INET6 defined.
670# You don't have to enable V6, but SCTP is
671# dual stacked and so far we have not torn apart
672# the V6 and V4.. since an association can span
673# both a V6 and V4 address at the SAME time :-)
674#
675options 	SCTP
676# There are bunches of options:
677# this one turns on all sorts of
678# nastily printing that you can
679# do. It's all controlled by a
680# bit mask (settable by socket opt and
681# by sysctl). Including will not cause
682# logging until you set the bits.. but it
683# can be quite verbose.. so without this
684# option we don't do any of the tests for
685# bits and prints.. which makes the code run
686# faster.. if you are not debugging don't use.
687options 	SCTP_DEBUG
688#
689# This option turns off the CRC32c checksum. Basically,
690# you will not be able to talk to anyone else who
691# has not done this. Its more for experimentation to
692# see how much CPU the CRC32c really takes. Most new
693# cards for TCP support checksum offload.. so this
694# option gives you a "view" into what SCTP would be
695# like with such an offload (which only exists in
696# high in iSCSI boards so far). With the new
697# splitting 8's algorithm its not as bad as it used
698# to be.. but it does speed things up try only
699# for in a captured lab environment :-)
700options 	SCTP_WITH_NO_CSUM
701#
702
703#
704# All that options after that turn on specific types of
705# logging. You can monitor CWND growth, flight size
706# and all sorts of things. Go look at the code and
707# see. I have used this to produce interesting
708# charts and graphs as well :->
709#
710# I have not yet committed the tools to get and print
711# the logs, I will do that eventually .. before then
712# if you want them send me an email rrs@freebsd.org
713# You basically must have ktr(4) enabled for these
714# and you then set the sysctl to turn on/off various
715# logging bits. Use ktrdump(8) to pull the log and run
716# it through a display program.. and graphs and other
717# things too.
718#
719options 	SCTP_LOCK_LOGGING
720options 	SCTP_MBUF_LOGGING
721options 	SCTP_MBCNT_LOGGING
722options 	SCTP_PACKET_LOGGING
723options 	SCTP_LTRACE_CHUNKS
724options 	SCTP_LTRACE_ERRORS
725
726
727# altq(9). Enable the base part of the hooks with the ALTQ option.
728# Individual disciplines must be built into the base system and can not be
729# loaded as modules at this point. ALTQ requires a stable TSC so if yours is
730# broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
731# option.
732options 	ALTQ
733options 	ALTQ_CBQ	# Class Based Queueing
734options 	ALTQ_RED	# Random Early Detection
735options 	ALTQ_RIO	# RED In/Out
736options 	ALTQ_CODEL	# CoDel Active Queueing
737options 	ALTQ_HFSC	# Hierarchical Packet Scheduler
738options 	ALTQ_FAIRQ	# Fair Packet Scheduler
739options 	ALTQ_CDNR	# Traffic conditioner
740options 	ALTQ_PRIQ	# Priority Queueing
741options 	ALTQ_NOPCC	# Required if the TSC is unusable
742options 	ALTQ_DEBUG
743
744# netgraph(4). Enable the base netgraph code with the NETGRAPH option.
745# Individual node types can be enabled with the corresponding option
746# listed below; however, this is not strictly necessary as netgraph
747# will automatically load the corresponding KLD module if the node type
748# is not already compiled into the kernel. Each type below has a
749# corresponding man page, e.g., ng_async(8).
750options 	NETGRAPH		# netgraph(4) system
751options 	NETGRAPH_DEBUG		# enable extra debugging, this
752					# affects netgraph(4) and nodes
753# Node types
754options 	NETGRAPH_ASYNC
755options 	NETGRAPH_ATMLLC
756options 	NETGRAPH_ATM_ATMPIF
757options 	NETGRAPH_BLUETOOTH		# ng_bluetooth(4)
758options 	NETGRAPH_BLUETOOTH_BT3C		# ng_bt3c(4)
759options 	NETGRAPH_BLUETOOTH_HCI		# ng_hci(4)
760options 	NETGRAPH_BLUETOOTH_L2CAP	# ng_l2cap(4)
761options 	NETGRAPH_BLUETOOTH_SOCKET	# ng_btsocket(4)
762options 	NETGRAPH_BLUETOOTH_UBT		# ng_ubt(4)
763options 	NETGRAPH_BLUETOOTH_UBTBCMFW	# ubtbcmfw(4)
764options 	NETGRAPH_BPF
765options 	NETGRAPH_BRIDGE
766options 	NETGRAPH_CAR
767options 	NETGRAPH_CISCO
768options 	NETGRAPH_DEFLATE
769options 	NETGRAPH_DEVICE
770options 	NETGRAPH_ECHO
771options 	NETGRAPH_EIFACE
772options 	NETGRAPH_ETHER
773options 	NETGRAPH_FRAME_RELAY
774options 	NETGRAPH_GIF
775options 	NETGRAPH_GIF_DEMUX
776options 	NETGRAPH_HOLE
777options 	NETGRAPH_IFACE
778options 	NETGRAPH_IP_INPUT
779options 	NETGRAPH_IPFW
780options 	NETGRAPH_KSOCKET
781options 	NETGRAPH_L2TP
782options 	NETGRAPH_LMI
783# MPPC compression requires proprietary files (not included)
784#options 	NETGRAPH_MPPC_COMPRESSION
785options 	NETGRAPH_MPPC_ENCRYPTION
786options 	NETGRAPH_NETFLOW
787options 	NETGRAPH_NAT
788options 	NETGRAPH_ONE2MANY
789options 	NETGRAPH_PATCH
790options 	NETGRAPH_PIPE
791options 	NETGRAPH_PPP
792options 	NETGRAPH_PPPOE
793options 	NETGRAPH_PPTPGRE
794options 	NETGRAPH_PRED1
795options 	NETGRAPH_RFC1490
796options 	NETGRAPH_SOCKET
797options 	NETGRAPH_SPLIT
798options 	NETGRAPH_SPPP
799options 	NETGRAPH_TAG
800options 	NETGRAPH_TCPMSS
801options 	NETGRAPH_TEE
802options 	NETGRAPH_UI
803options 	NETGRAPH_VJC
804options 	NETGRAPH_VLAN
805
806# NgATM - Netgraph ATM
807options 	NGATM_ATM
808options 	NGATM_ATMBASE
809options 	NGATM_SSCOP
810options 	NGATM_SSCFU
811options 	NGATM_UNI
812options 	NGATM_CCATM
813
814device		mn	# Munich32x/Falc54 Nx64kbit/sec cards.
815
816# Network stack virtualization.
817#options	VIMAGE
818#options	VNET_DEBUG	# debug for VIMAGE
819
820#
821# Network interfaces:
822#  The `loop' device is MANDATORY when networking is enabled.
823device		loop
824
825#  The `ether' device provides generic code to handle
826#  Ethernets; it is MANDATORY when an Ethernet device driver is
827#  configured or token-ring is enabled.
828device		ether
829
830#  The `vlan' device implements the VLAN tagging of Ethernet frames
831#  according to IEEE 802.1Q.
832device		vlan
833
834# The `vxlan' device implements the VXLAN encapsulation of Ethernet
835# frames in UDP packets according to RFC7348.
836device		vxlan
837
838#  The `wlan' device provides generic code to support 802.11
839#  drivers, including host AP mode; it is MANDATORY for the wi,
840#  and ath drivers and will eventually be required by all 802.11 drivers.
841device		wlan
842options 	IEEE80211_DEBUG		#enable debugging msgs
843options 	IEEE80211_AMPDU_AGE	#age frames in AMPDU reorder q's
844options 	IEEE80211_SUPPORT_MESH	#enable 802.11s D3.0 support
845options 	IEEE80211_SUPPORT_TDMA	#enable TDMA support
846
847#  The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
848#  support for WEP, TKIP, and AES-CCMP crypto protocols optionally
849#  used with 802.11 devices that depend on the `wlan' module.
850device		wlan_wep
851device		wlan_ccmp
852device		wlan_tkip
853
854#  The `wlan_xauth' device provides support for external (i.e. user-mode)
855#  authenticators for use with 802.11 drivers that use the `wlan'
856#  module and support 802.1x and/or WPA security protocols.
857device		wlan_xauth
858
859#  The `wlan_acl' device provides a MAC-based access control mechanism
860#  for use with 802.11 drivers operating in ap mode and using the
861#  `wlan' module.
862#  The 'wlan_amrr' device provides AMRR transmit rate control algorithm
863device		wlan_acl
864device		wlan_amrr
865
866# Generic TokenRing
867device		token
868
869#  The `fddi' device provides generic code to support FDDI.
870device		fddi
871
872#  The `arcnet' device provides generic code to support Arcnet.
873device		arcnet
874
875#  The `sppp' device serves a similar role for certain types
876#  of synchronous PPP links (like `cx', `ar').
877device		sppp
878
879#  The `bpf' device enables the Berkeley Packet Filter.  Be
880#  aware of the legal and administrative consequences of enabling this
881#  option.  DHCP requires bpf.
882device		bpf
883
884#  The `netmap' device implements memory-mapped access to network
885#  devices from userspace, enabling wire-speed packet capture and
886#  generation even at 10Gbit/s. Requires support in the device
887#  driver. Supported drivers are ixgbe, e1000, re.
888device		netmap
889
890#  The `disc' device implements a minimal network interface,
891#  which throws away all packets sent and never receives any.  It is
892#  included for testing and benchmarking purposes.
893device		disc
894
895# The `epair' device implements a virtual back-to-back connected Ethernet
896# like interface pair.
897device		epair
898
899#  The `edsc' device implements a minimal Ethernet interface,
900#  which discards all packets sent and receives none.
901device		edsc
902
903#  The `tap' device is a pty-like virtual Ethernet interface
904device		tap
905
906#  The `tun' device implements (user-)ppp and nos-tun(8)
907device		tun
908
909#  The `gif' device implements IPv6 over IP4 tunneling,
910#  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
911#  IPv6 over IPv6 tunneling.
912#  The `gre' device implements GRE (Generic Routing Encapsulation) tunneling,
913#  as specified in the RFC 2784 and RFC 2890.
914#  The `me' device implements Minimal Encapsulation within IPv4 as
915#  specified in the RFC 2004.
916#  The XBONEHACK option allows the same pair of addresses to be configured on
917#  multiple gif interfaces.
918device		gif
919device		gre
920device		me
921options 	XBONEHACK
922
923#  The `stf' device implements 6to4 encapsulation.
924device		stf
925
926# The pf packet filter consists of three devices:
927#  The `pf' device provides /dev/pf and the firewall code itself.
928#  The `pflog' device provides the pflog0 interface which logs packets.
929#  The `pfsync' device provides the pfsync0 interface used for
930#   synchronization of firewall state tables (over the net).
931device		pf
932device		pflog
933device		pfsync
934
935# Bridge interface.
936device		if_bridge
937
938# Common Address Redundancy Protocol. See carp(4) for more details.
939device		carp
940
941# IPsec interface.
942device		enc
943
944# Link aggregation interface.
945device		lagg
946
947#
948# Internet family options:
949#
950# MROUTING enables the kernel multicast packet forwarder, which works
951# with mrouted and XORP.
952#
953# IPFIREWALL enables support for IP firewall construction, in
954# conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
955# logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
956# limits the number of times a matching entry can be logged.
957#
958# WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
959# and if you do not add other rules during startup to allow access,
960# YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
961# in /etc/rc.conf when first enabling this feature, then refining the
962# firewall rules in /etc/rc.firewall after you've tested that the new kernel
963# feature works properly.
964#
965# IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
966# allow everything.  Use with care, if a cracker can crash your
967# firewall machine, they can get to your protected machines.  However,
968# if you are using it as an as-needed filter for specific problems as
969# they arise, then this may be for you.  Changing the default to 'allow'
970# means that you won't get stuck if the kernel and /sbin/ipfw binary get
971# out of sync.
972#
973# IPDIVERT enables the divert IP sockets, used by ``ipfw divert''.  It
974# depends on IPFIREWALL if compiled into the kernel.
975#
976# IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
977# LIBALIAS.
978#
979# IPFIREWALL_NAT64 adds support for in kernel NAT64 in ipfw.
980#
981# IPFIREWALL_NPTV6 adds support for in kernel NPTv6 in ipfw.
982#
983# IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
984# packets without touching the TTL).  This can be useful to hide firewalls
985# from traceroute and similar tools.
986#
987# PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
988#
989# TCPDEBUG enables code which keeps traces of the TCP state machine
990# for sockets with the SO_DEBUG option set, which can then be examined
991# using the trpt(8) utility.
992#
993# TCPPCAP enables code which keeps the last n packets sent and received
994# on a TCP socket.
995#
996# RADIX_MPATH provides support for equal-cost multi-path routing.
997#
998options 	MROUTING		# Multicast routing
999options 	IPFIREWALL		#firewall
1000options 	IPFIREWALL_VERBOSE	#enable logging to syslogd(8)
1001options 	IPFIREWALL_VERBOSE_LIMIT=100	#limit verbosity
1002options 	IPFIREWALL_DEFAULT_TO_ACCEPT	#allow everything by default
1003options 	IPFIREWALL_NAT		#ipfw kernel nat support
1004options 	IPFIREWALL_NAT64	#ipfw kernel NAT64 support
1005options 	IPFIREWALL_NPTV6	#ipfw kernel IPv6 NPT support
1006options 	IPDIVERT		#divert sockets
1007options 	IPFILTER		#ipfilter support
1008options 	IPFILTER_LOG		#ipfilter logging
1009options 	IPFILTER_LOOKUP		#ipfilter pools
1010options 	IPFILTER_DEFAULT_BLOCK	#block all packets by default
1011options 	IPSTEALTH		#support for stealth forwarding
1012options 	PF_DEFAULT_TO_DROP	#drop everything by default
1013options 	TCPDEBUG
1014options 	TCPPCAP
1015options 	RADIX_MPATH
1016
1017# The MBUF_STRESS_TEST option enables options which create
1018# various random failures / extreme cases related to mbuf
1019# functions.  See mbuf(9) for a list of available test cases.
1020# MBUF_PROFILING enables code to profile the mbuf chains
1021# exiting the system (via participating interfaces) and
1022# return a logarithmic histogram of monitored parameters
1023# (e.g. packet size, wasted space, number of mbufs in chain).
1024options 	MBUF_STRESS_TEST
1025options 	MBUF_PROFILING
1026
1027# Statically link in accept filters
1028options 	ACCEPT_FILTER_DATA
1029options 	ACCEPT_FILTER_DNS
1030options 	ACCEPT_FILTER_HTTP
1031
1032# TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
1033# carried in TCP option 19. This option is commonly used to protect
1034# TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
1035# This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
1036# This requires the use of 'device crypto' and 'options IPSEC'.
1037options 	TCP_SIGNATURE		#include support for RFC 2385
1038
1039# DUMMYNET enables the "dummynet" bandwidth limiter.  You need IPFIREWALL
1040# as well.  See dummynet(4) and ipfw(8) for more info.  When you run
1041# DUMMYNET it is advisable to also have at least "options HZ=1000" to achieve
1042# a smooth scheduling of the traffic.
1043options 	DUMMYNET
1044
1045#####################################################################
1046# FILESYSTEM OPTIONS
1047
1048#
1049# Only the root filesystem needs to be statically compiled or preloaded
1050# as module; everything else will be automatically loaded at mount
1051# time.  Some people still prefer to statically compile other
1052# filesystems as well.
1053#
1054# NB: The UNION filesystem was known to be buggy in the past.  It is now
1055# being actively maintained, although there are still some issues being
1056# resolved.
1057#
1058
1059# One of these is mandatory:
1060options 	FFS			#Fast filesystem
1061options 	NFSCL			#Network File System client
1062
1063# The rest are optional:
1064options 	AUTOFS			#Automounter filesystem
1065options 	CD9660			#ISO 9660 filesystem
1066options 	FDESCFS			#File descriptor filesystem
1067options 	FUSE			#FUSE support module
1068options 	MSDOSFS			#MS DOS File System (FAT, FAT32)
1069options 	NFSLOCKD		#Network Lock Manager
1070options 	NFSD			#Network Filesystem Server
1071options 	KGSSAPI			#Kernel GSSAPI implementation
1072
1073options 	NULLFS			#NULL filesystem
1074options 	PROCFS			#Process filesystem (requires PSEUDOFS)
1075options 	PSEUDOFS		#Pseudo-filesystem framework
1076options 	PSEUDOFS_TRACE		#Debugging support for PSEUDOFS
1077options 	SMBFS			#SMB/CIFS filesystem
1078options 	TMPFS			#Efficient memory filesystem
1079options 	UDF			#Universal Disk Format
1080options 	UNIONFS			#Union filesystem
1081# The xFS_ROOT options REQUIRE the associated ``options xFS''
1082options 	NFS_ROOT		#NFS usable as root device
1083
1084# Soft updates is a technique for improving filesystem speed and
1085# making abrupt shutdown less risky.
1086#
1087options 	SOFTUPDATES
1088
1089# Extended attributes allow additional data to be associated with files,
1090# and is used for ACLs, Capabilities, and MAC labels.
1091# See src/sys/ufs/ufs/README.extattr for more information.
1092options 	UFS_EXTATTR
1093options 	UFS_EXTATTR_AUTOSTART
1094
1095# Access Control List support for UFS filesystems.  The current ACL
1096# implementation requires extended attribute support, UFS_EXTATTR,
1097# for the underlying filesystem.
1098# See src/sys/ufs/ufs/README.acls for more information.
1099options 	UFS_ACL
1100
1101# Directory hashing improves the speed of operations on very large
1102# directories at the expense of some memory.
1103options 	UFS_DIRHASH
1104
1105# Gjournal-based UFS journaling support.
1106options 	UFS_GJOURNAL
1107
1108# Make space in the kernel for a root filesystem on a md device.
1109# Define to the number of kilobytes to reserve for the filesystem.
1110# This is now optional.
1111# If not defined, the root filesystem passed in as the MFS_IMAGE makeoption
1112# will be automatically embedded in the kernel during linking. Its exact size
1113# will be consumed within the kernel.
1114# If defined, the old way of embedding the filesystem in the kernel will be
1115# used. That is to say MD_ROOT_SIZE KB will be allocated in the kernel and
1116# later, the filesystem image passed in as the MFS_IMAGE makeoption will be
1117# dd'd into the reserved space if it fits.
1118options 	MD_ROOT_SIZE=10
1119
1120# Make the md device a potential root device, either with preloaded
1121# images of type mfs_root or md_root.
1122options 	MD_ROOT
1123
1124# Disk quotas are supported when this option is enabled.
1125options 	QUOTA			#enable disk quotas
1126
1127# If you are running a machine just as a fileserver for PC and MAC
1128# users, using SAMBA, you may consider setting this option
1129# and keeping all those users' directories on a filesystem that is
1130# mounted with the suiddir option. This gives new files the same
1131# ownership as the directory (similar to group). It's a security hole
1132# if you let these users run programs, so confine it to file-servers
1133# (but it'll save you lots of headaches in those cases). Root owned
1134# directories are exempt and X bits are cleared. The suid bit must be
1135# set on the directory as well; see chmod(1). PC owners can't see/set
1136# ownerships so they keep getting their toes trodden on. This saves
1137# you all the support calls as the filesystem it's used on will act as
1138# they expect: "It's my dir so it must be my file".
1139#
1140options 	SUIDDIR
1141
1142# NFS options:
1143options 	NFS_MINATTRTIMO=3	# VREG attrib cache timeout in sec
1144options 	NFS_MAXATTRTIMO=60
1145options 	NFS_MINDIRATTRTIMO=30	# VDIR attrib cache timeout in sec
1146options 	NFS_MAXDIRATTRTIMO=60
1147options 	NFS_DEBUG		# Enable NFS Debugging
1148
1149#
1150# Add support for the EXT2FS filesystem of Linux fame.  Be a bit
1151# careful with this - the ext2fs code has a tendency to lag behind
1152# changes and not be exercised very much, so mounting read/write could
1153# be dangerous (and even mounting read only could result in panics.)
1154#
1155options 	EXT2FS
1156
1157# Cryptographically secure random number generator; /dev/random
1158device		random
1159
1160# The system memory devices; /dev/mem, /dev/kmem
1161device		mem
1162
1163# The kernel symbol table device; /dev/ksyms
1164device		ksyms
1165
1166# Optional character code conversion support with LIBICONV.
1167# Each option requires their base file system and LIBICONV.
1168options 	CD9660_ICONV
1169options 	MSDOSFS_ICONV
1170options 	UDF_ICONV
1171
1172
1173#####################################################################
1174# POSIX P1003.1B
1175
1176# Real time extensions added in the 1993 POSIX
1177# _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1178
1179options 	_KPOSIX_PRIORITY_SCHEDULING
1180# p1003_1b_semaphores are very experimental,
1181# user should be ready to assist in debugging if problems arise.
1182options 	P1003_1B_SEMAPHORES
1183
1184# POSIX message queue
1185options 	P1003_1B_MQUEUE
1186
1187#####################################################################
1188# SECURITY POLICY PARAMETERS
1189
1190# Support for BSM audit
1191options 	AUDIT
1192
1193# Support for Mandatory Access Control (MAC):
1194options 	MAC
1195options 	MAC_BIBA
1196options 	MAC_BSDEXTENDED
1197options 	MAC_IFOFF
1198options 	MAC_LOMAC
1199options 	MAC_MLS
1200options 	MAC_NONE
1201options 	MAC_PARTITION
1202options 	MAC_PORTACL
1203options 	MAC_SEEOTHERUIDS
1204options 	MAC_STUB
1205options 	MAC_TEST
1206
1207# Support for Capsicum
1208options 	CAPABILITIES	# fine-grained rights on file descriptors
1209options 	CAPABILITY_MODE	# sandboxes with no global namespace access
1210
1211
1212#####################################################################
1213# CLOCK OPTIONS
1214
1215# The granularity of operation is controlled by the kernel option HZ whose
1216# default value (1000 on most architectures) means a granularity of 1ms
1217# (1s/HZ).  Historically, the default was 100, but finer granularity is
1218# required for DUMMYNET and other systems on modern hardware.  There are
1219# reasonable arguments that HZ should, in fact, be 100 still; consider,
1220# that reducing the granularity too much might cause excessive overhead in
1221# clock interrupt processing, potentially causing ticks to be missed and thus
1222# actually reducing the accuracy of operation.
1223
1224options 	HZ=100
1225
1226# Enable support for the kernel PLL to use an external PPS signal,
1227# under supervision of [x]ntpd(8)
1228# More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
1229
1230options 	PPS_SYNC
1231
1232# Enable support for generic feed-forward clocks in the kernel.
1233# The feed-forward clock support is an alternative to the feedback oriented
1234# ntpd/system clock approach, and is to be used with a feed-forward
1235# synchronization algorithm such as the RADclock:
1236# More info here: http://www.synclab.org/radclock
1237
1238options 	FFCLOCK
1239
1240
1241#####################################################################
1242# SCSI DEVICES
1243
1244# SCSI DEVICE CONFIGURATION
1245
1246# The SCSI subsystem consists of the `base' SCSI code, a number of
1247# high-level SCSI device `type' drivers, and the low-level host-adapter
1248# device drivers.  The host adapters are listed in the ISA and PCI
1249# device configuration sections below.
1250#
1251# It is possible to wire down your SCSI devices so that a given bus,
1252# target, and LUN always come on line as the same device unit.  In
1253# earlier versions the unit numbers were assigned in the order that
1254# the devices were probed on the SCSI bus.  This means that if you
1255# removed a disk drive, you may have had to rewrite your /etc/fstab
1256# file, and also that you had to be careful when adding a new disk
1257# as it may have been probed earlier and moved your device configuration
1258# around.  (See also option GEOM_VOL for a different solution to this
1259# problem.)
1260
1261# This old behavior is maintained as the default behavior.  The unit
1262# assignment begins with the first non-wired down unit for a device
1263# type.  For example, if you wire a disk as "da3" then the first
1264# non-wired disk will be assigned da4.
1265
1266# The syntax for wiring down devices is:
1267
1268hint.scbus.0.at="ahc0"
1269hint.scbus.1.at="ahc1"
1270hint.scbus.1.bus="0"
1271hint.scbus.3.at="ahc2"
1272hint.scbus.3.bus="0"
1273hint.scbus.2.at="ahc2"
1274hint.scbus.2.bus="1"
1275hint.da.0.at="scbus0"
1276hint.da.0.target="0"
1277hint.da.0.unit="0"
1278hint.da.1.at="scbus3"
1279hint.da.1.target="1"
1280hint.da.2.at="scbus2"
1281hint.da.2.target="3"
1282hint.sa.1.at="scbus1"
1283hint.sa.1.target="6"
1284
1285# "units" (SCSI logical unit number) that are not specified are
1286# treated as if specified as LUN 0.
1287
1288# All SCSI devices allocate as many units as are required.
1289
1290# The ch driver drives SCSI Media Changer ("jukebox") devices.
1291#
1292# The da driver drives SCSI Direct Access ("disk") and Optical Media
1293# ("WORM") devices.
1294#
1295# The sa driver drives SCSI Sequential Access ("tape") devices.
1296#
1297# The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1298#
1299# The ses driver drives SCSI Environment Services ("ses") and
1300# SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1301#
1302# The pt driver drives SCSI Processor devices.
1303#
1304# The sg driver provides a passthrough API that is compatible with the
1305# Linux SG driver.  It will work in conjunction with the COMPAT_LINUX
1306# option to run linux SG apps.  It can also stand on its own and provide
1307# source level API compatibility for porting apps to FreeBSD.
1308#
1309# Target Mode support is provided here but also requires that a SIM
1310# (SCSI Host Adapter Driver) provide support as well.
1311#
1312# The targ driver provides target mode support as a Processor type device.
1313# It exists to give the minimal context necessary to respond to Inquiry
1314# commands. There is a sample user application that shows how the rest
1315# of the command support might be done in /usr/share/examples/scsi_target.
1316#
1317# The targbh driver provides target mode support and exists to respond
1318# to incoming commands that do not otherwise have a logical unit assigned
1319# to them.
1320#
1321# The pass driver provides a passthrough API to access the CAM subsystem.
1322
1323device		scbus		#base SCSI code
1324device		ch		#SCSI media changers
1325device		da		#SCSI direct access devices (aka disks)
1326device		sa		#SCSI tapes
1327device		cd		#SCSI CD-ROMs
1328device		ses		#Enclosure Services (SES and SAF-TE)
1329device		pt		#SCSI processor
1330device		targ		#SCSI Target Mode Code
1331device		targbh		#SCSI Target Mode Blackhole Device
1332device		pass		#CAM passthrough driver
1333device		sg		#Linux SCSI passthrough
1334device		ctl		#CAM Target Layer
1335
1336# CAM OPTIONS:
1337# debugging options:
1338# CAMDEBUG		Compile in all possible debugging.
1339# CAM_DEBUG_COMPILE	Debug levels to compile in.
1340# CAM_DEBUG_FLAGS	Debug levels to enable on boot.
1341# CAM_DEBUG_BUS		Limit debugging to the given bus.
1342# CAM_DEBUG_TARGET	Limit debugging to the given target.
1343# CAM_DEBUG_LUN		Limit debugging to the given lun.
1344# CAM_DEBUG_DELAY	Delay in us after printing each debug line.
1345#
1346# CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1347# SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1348# SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
1349# SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
1350#             queue after a bus reset, and the number of milliseconds to
1351#             freeze the device queue after a bus device reset.  This
1352#             can be changed at boot and runtime with the
1353#             kern.cam.scsi_delay tunable/sysctl.
1354options 	CAMDEBUG
1355options 	CAM_DEBUG_COMPILE=-1
1356options 	CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
1357options 	CAM_DEBUG_BUS=-1
1358options 	CAM_DEBUG_TARGET=-1
1359options 	CAM_DEBUG_LUN=-1
1360options 	CAM_DEBUG_DELAY=1
1361options 	CAM_MAX_HIGHPOWER=4
1362options 	SCSI_NO_SENSE_STRINGS
1363options 	SCSI_NO_OP_STRINGS
1364options 	SCSI_DELAY=5000	# Be pessimistic about Joe SCSI device
1365options 	CAM_IOSCHED_DYNAMIC
1366
1367# Options for the CAM CDROM driver:
1368# CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1369# CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1370#                           enforced if there is I/O waiting for another LUN
1371# The compiled in defaults for these variables are 2 and 10 seconds,
1372# respectively.
1373#
1374# These can also be changed on the fly with the following sysctl variables:
1375# kern.cam.cd.changer.min_busy_seconds
1376# kern.cam.cd.changer.max_busy_seconds
1377#
1378options 	CHANGER_MIN_BUSY_SECONDS=2
1379options 	CHANGER_MAX_BUSY_SECONDS=10
1380
1381# Options for the CAM sequential access driver:
1382# SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
1383# SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
1384# SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
1385# SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
1386# SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
1387options 	SA_IO_TIMEOUT=4
1388options 	SA_SPACE_TIMEOUT=60
1389options 	SA_REWIND_TIMEOUT=(2*60)
1390options 	SA_ERASE_TIMEOUT=(4*60)
1391options 	SA_1FM_AT_EOD
1392
1393# Optional timeout for the CAM processor target (pt) device
1394# This is specified in seconds.  The default is 60 seconds.
1395options 	SCSI_PT_DEFAULT_TIMEOUT=60
1396
1397# Optional enable of doing SES passthrough on other devices (e.g., disks)
1398#
1399# Normally disabled because a lot of newer SCSI disks report themselves
1400# as having SES capabilities, but this can then clot up attempts to build
1401# a topology with the SES device that's on the box these drives are in....
1402options 	SES_ENABLE_PASSTHROUGH
1403
1404
1405#####################################################################
1406# MISCELLANEOUS DEVICES AND OPTIONS
1407
1408device		pty		#BSD-style compatibility pseudo ttys
1409device		nmdm		#back-to-back tty devices
1410device		md		#Memory/malloc disk
1411device		snp		#Snoop device - to look at pty/vty/etc..
1412device		ccd		#Concatenated disk driver
1413device		firmware	#firmware(9) support
1414
1415# Kernel side iconv library
1416options 	LIBICONV
1417
1418# Size of the kernel message buffer.  Should be N * pagesize.
1419options 	MSGBUF_SIZE=40960
1420
1421
1422#####################################################################
1423# HARDWARE BUS CONFIGURATION
1424
1425#
1426# PCI bus & PCI options:
1427#
1428device		pci
1429options 	PCI_HP			# PCI-Express native HotPlug
1430options 	PCI_IOV			# PCI SR-IOV support
1431
1432
1433#####################################################################
1434# HARDWARE DEVICE CONFIGURATION
1435
1436# For ISA the required hints are listed.
1437# EISA, MCA, PCI, CardBus, SD/MMC and pccard are self identifying buses, so
1438# no hints are needed.
1439
1440#
1441# Mandatory devices:
1442#
1443
1444# These options are valid for other keyboard drivers as well.
1445options 	KBD_DISABLE_KEYMAP_LOAD	# refuse to load a keymap
1446options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
1447
1448device		kbdmux			# keyboard multiplexer
1449options		KBDMUX_DFLT_KEYMAP	# specify the built-in keymap
1450makeoptions	KBDMUX_DFLT_KEYMAP=it.iso
1451
1452options 	FB_DEBUG		# Frame buffer debugging
1453
1454device		splash			# Splash screen and screen saver support
1455
1456# Various screen savers.
1457device		blank_saver
1458device		daemon_saver
1459device		dragon_saver
1460device		fade_saver
1461device		fire_saver
1462device		green_saver
1463device		logo_saver
1464device		rain_saver
1465device		snake_saver
1466device		star_saver
1467device		warp_saver
1468
1469# The syscons console driver (SCO color console compatible).
1470device		sc
1471hint.sc.0.at="isa"
1472options 	MAXCONS=16		# number of virtual consoles
1473options 	SC_ALT_MOUSE_IMAGE	# simplified mouse cursor in text mode
1474options 	SC_DFLT_FONT		# compile font in
1475makeoptions	SC_DFLT_FONT=cp850
1476options 	SC_DISABLE_KDBKEY	# disable `debug' key
1477options 	SC_DISABLE_REBOOT	# disable reboot key sequence
1478options 	SC_HISTORY_SIZE=200	# number of history buffer lines
1479options 	SC_MOUSE_CHAR=0x3	# char code for text mode mouse cursor
1480options 	SC_PIXEL_MODE		# add support for the raster text mode
1481
1482# The following options will let you change the default colors of syscons.
1483options 	SC_NORM_ATTR=(FG_GREEN|BG_BLACK)
1484options 	SC_NORM_REV_ATTR=(FG_YELLOW|BG_GREEN)
1485options 	SC_KERNEL_CONS_ATTR=(FG_RED|BG_BLACK)
1486options 	SC_KERNEL_CONS_REV_ATTR=(FG_BLACK|BG_RED)
1487
1488# The following options will let you change the default behavior of
1489# cut-n-paste feature
1490options 	SC_CUT_SPACES2TABS	# convert leading spaces into tabs
1491options 	SC_CUT_SEPCHARS=\"x09\"	# set of characters that delimit words
1492					# (default is single space - \"x20\")
1493
1494# If you have a two button mouse, you may want to add the following option
1495# to use the right button of the mouse to paste text.
1496options 	SC_TWOBUTTON_MOUSE
1497
1498# You can selectively disable features in syscons.
1499options 	SC_NO_CUTPASTE
1500options 	SC_NO_FONT_LOADING
1501options 	SC_NO_HISTORY
1502options 	SC_NO_MODE_CHANGE
1503options 	SC_NO_SYSMOUSE
1504options 	SC_NO_SUSPEND_VTYSWITCH
1505
1506# `flags' for sc
1507#	0x80	Put the video card in the VESA 800x600 dots, 16 color mode
1508#	0x100	Probe for a keyboard device periodically if one is not present
1509
1510# Enable experimental features of the syscons terminal emulator (teken).
1511options 	TEKEN_CONS25		# cons25-style terminal emulation
1512options 	TEKEN_UTF8		# UTF-8 output handling
1513
1514# The vt video console driver.
1515device		vt
1516options		VT_ALT_TO_ESC_HACK=1	# Prepend ESC sequence to ALT keys
1517options		VT_MAXWINDOWS=16	# Number of virtual consoles
1518options		VT_TWOBUTTON_MOUSE	# Use right mouse button to paste
1519
1520# The following options set the default framebuffer size.
1521options		VT_FB_DEFAULT_HEIGHT=480
1522options		VT_FB_DEFAULT_WIDTH=640
1523
1524# The following options will let you change the default vt terminal colors.
1525options		TERMINAL_NORM_ATTR=(FG_GREEN|BG_BLACK)
1526options		TERMINAL_KERN_ATTR=(FG_LIGHTRED|BG_BLACK)
1527
1528#
1529# Optional devices:
1530#
1531
1532#
1533# SCSI host adapters:
1534#
1535# adv: All Narrow SCSI bus AdvanSys controllers.
1536# adw: Second Generation AdvanSys controllers including the ADV940UW.
1537# aha: Adaptec 154x/1535/1640
1538# ahb: Adaptec 174x EISA controllers
1539# ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1540#      19160x/29160x, aic7770/aic78xx
1541# ahd: Adaptec 29320/39320 Controllers.
1542# aic: Adaptec 6260/6360, APA-1460 (PC Card), NEC PC9801-100 (C-BUS)
1543# bt:  Most Buslogic controllers: including BT-445, BT-54x, BT-64x, BT-74x,
1544#      BT-75x, BT-946, BT-948, BT-956, BT-958, SDC3211B, SDC3211F, SDC3222F
1545# esp: Emulex ESP, NCR 53C9x and QLogic FAS families based controllers
1546#      including the AMD Am53C974 (found on devices such as the Tekram
1547#      DC-390(T)) and the Sun ESP and FAS families of controllers
1548# isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1549#      ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1550#      ISP 12160 Ultra3 SCSI,
1551#      Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1552#      Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1553#      Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
1554# ispfw: Firmware module for Qlogic host adapters
1555# mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
1556#      or FC9x9 Fibre Channel host adapters.
1557# ncr: NCR 53C810, 53C825 self-contained SCSI host adapters.
1558# sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1559#      53C810, 53C810A, 53C815, 53C825,  53C825A, 53C860, 53C875,
1560#      53C876, 53C885,  53C895, 53C895A, 53C896,  53C897, 53C1510D,
1561#      53C1010-33, 53C1010-66.
1562# trm: Tekram DC395U/UW/F DC315U adapters.
1563# wds: WD7000
1564
1565#
1566# Note that the order is important in order for Buslogic ISA/EISA cards to be
1567# probed correctly.
1568#
1569device		bt
1570hint.bt.0.at="isa"
1571hint.bt.0.port="0x330"
1572device		adv
1573hint.adv.0.at="isa"
1574device		adw
1575device		aha
1576hint.aha.0.at="isa"
1577device		aic
1578hint.aic.0.at="isa"
1579device		ahb
1580device		ahc
1581device		ahd
1582device		esp
1583device		iscsi_initiator
1584device		isp
1585hint.isp.0.disable="1"
1586hint.isp.0.role="3"
1587hint.isp.0.prefer_iomap="1"
1588hint.isp.0.prefer_memmap="1"
1589hint.isp.0.fwload_disable="1"
1590hint.isp.0.ignore_nvram="1"
1591hint.isp.0.fullduplex="1"
1592hint.isp.0.topology="lport"
1593hint.isp.0.topology="nport"
1594hint.isp.0.topology="lport-only"
1595hint.isp.0.topology="nport-only"
1596# we can't get u_int64_t types, nor can we get strings if it's got
1597# a leading 0x, hence this silly dodge.
1598hint.isp.0.portwnn="w50000000aaaa0000"
1599hint.isp.0.nodewnn="w50000000aaaa0001"
1600device		ispfw
1601device		mpt
1602device		ncr
1603device		sym
1604device		trm
1605device		wds
1606hint.wds.0.at="isa"
1607hint.wds.0.port="0x350"
1608hint.wds.0.irq="11"
1609hint.wds.0.drq="6"
1610
1611# The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1612# controllers that have it configured only if this option is set. Unfortunately,
1613# this doesn't work on some motherboards, which prevents it from being the
1614# default.
1615options 	AHC_ALLOW_MEMIO
1616
1617# Dump the contents of the ahc controller configuration PROM.
1618options 	AHC_DUMP_EEPROM
1619
1620# Bitmap of units to enable targetmode operations.
1621options 	AHC_TMODE_ENABLE
1622
1623# Compile in Aic7xxx Debugging code.
1624options 	AHC_DEBUG
1625
1626# Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1627options 	AHC_DEBUG_OPTS
1628
1629# Print register bitfields in debug output.  Adds ~128k to driver
1630# See ahc(4).
1631options 	AHC_REG_PRETTY_PRINT
1632
1633# Compile in aic79xx debugging code.
1634options 	AHD_DEBUG
1635
1636# Aic79xx driver debugging options.  Adds ~215k to driver.  See ahd(4).
1637options 	AHD_DEBUG_OPTS=0xFFFFFFFF
1638
1639# Print human-readable register definitions when debugging
1640options 	AHD_REG_PRETTY_PRINT
1641
1642# Bitmap of units to enable targetmode operations.
1643options 	AHD_TMODE_ENABLE
1644
1645# The adw driver will attempt to use memory mapped I/O for all PCI
1646# controllers that have it configured only if this option is set.
1647options 	ADW_ALLOW_MEMIO
1648
1649# Options used in dev/iscsi (Software iSCSI stack)
1650#
1651options 	ISCSI_INITIATOR_DEBUG=9
1652
1653# Options used in dev/isp/ (Qlogic SCSI/FC driver).
1654#
1655#	ISP_TARGET_MODE		-	enable target mode operation
1656#
1657options 	ISP_TARGET_MODE=1
1658#
1659#	ISP_DEFAULT_ROLES	-	default role
1660#		none=0
1661#		target=1
1662#		initiator=2
1663#		both=3			(not supported currently)
1664#
1665#	ISP_INTERNAL_TARGET		(trivial internal disk target, for testing)
1666#
1667options 	ISP_DEFAULT_ROLES=0
1668
1669# Options used in dev/sym/ (Symbios SCSI driver).
1670#options 	SYM_SETUP_LP_PROBE_MAP	#-Low Priority Probe Map (bits)
1671					# Allows the ncr to take precedence
1672					# 1 (1<<0) -> 810a, 860
1673					# 2 (1<<1) -> 825a, 875, 885, 895
1674					# 4 (1<<2) -> 895a, 896, 1510d
1675#options 	SYM_SETUP_SCSI_DIFF	#-HVD support for 825a, 875, 885
1676					# disabled:0 (default), enabled:1
1677#options 	SYM_SETUP_PCI_PARITY	#-PCI parity checking
1678					# disabled:0, enabled:1 (default)
1679#options 	SYM_SETUP_MAX_LUN	#-Number of LUNs supported
1680					# default:8, range:[1..64]
1681
1682# The 'dpt' driver provides support for old DPT controllers (http://www.dpt.com/).
1683# These have hardware RAID-{0,1,5} support, and do multi-initiator I/O.
1684# The DPT controllers are commonly re-licensed under other brand-names -
1685# some controllers by Olivetti, Dec, HP, AT&T, SNI, AST, Alphatronic, NEC and
1686# Compaq are actually DPT controllers.
1687#
1688# See src/sys/dev/dpt for debugging and other subtle options.
1689#  DPT_MEASURE_PERFORMANCE  Enables a set of (semi)invasive metrics. Various
1690#                           instruments are enabled.  The tools in
1691#                           /usr/sbin/dpt_* assume these to be enabled.
1692#  DPT_DEBUG_xxxx           These are controllable from sys/dev/dpt/dpt.h
1693#  DPT_RESET_HBA            Make "reset" actually reset the controller
1694#                           instead of fudging it.  Only enable this if you
1695#			    are 100% certain you need it.
1696
1697device		dpt
1698
1699# DPT options
1700#!CAM# options 	DPT_MEASURE_PERFORMANCE
1701options 	DPT_RESET_HBA
1702
1703#
1704# Compaq "CISS" RAID controllers (SmartRAID 5* series)
1705# These controllers have a SCSI-like interface, and require the
1706# CAM infrastructure.
1707#
1708device		ciss
1709
1710#
1711# Intel Integrated RAID controllers.
1712# This driver was developed and is maintained by Intel.  Contacts
1713# at Intel for this driver are
1714# "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
1715# "Leubner, Achim" <achim.leubner@intel.com>.
1716#
1717device		iir
1718
1719#
1720# Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
1721# firmware.  These controllers have a SCSI-like interface, and require
1722# the CAM infrastructure.
1723#
1724device		mly
1725
1726#
1727# Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers.  Only
1728# one entry is needed; the code will find and configure all supported
1729# controllers.
1730#
1731device		ida		# Compaq Smart RAID
1732device		mlx		# Mylex DAC960
1733device		amr		# AMI MegaRAID
1734device		amrp		# SCSI Passthrough interface (optional, CAM req.)
1735device		mfi		# LSI MegaRAID SAS
1736device		mfip		# LSI MegaRAID SAS passthrough, requires CAM
1737options 	MFI_DEBUG
1738device		mrsas		# LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
1739
1740#
1741# 3ware ATA RAID
1742#
1743device		twe		# 3ware ATA RAID
1744
1745#
1746# Serial ATA host controllers:
1747#
1748# ahci: Advanced Host Controller Interface (AHCI) compatible
1749# mvs:  Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
1750# siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
1751#
1752# These drivers are part of cam(4) subsystem. They supersede less featured
1753# ata(4) subsystem drivers, supporting same hardware.
1754
1755device		ahci
1756device		mvs
1757device		siis
1758
1759#
1760# The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
1761# PC Card devices. You only need one "device ata" for it to find all
1762# PCI and PC Card ATA/ATAPI devices on modern machines.
1763# Alternatively, individual bus and chipset drivers may be chosen by using
1764# the 'atacore' driver then selecting the drivers on a per vendor basis.
1765# For example to build a system which only supports a VIA chipset,
1766# omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
1767device		ata
1768
1769# Modular ATA
1770#device		atacore		# Core ATA functionality
1771#device		atacard		# CARDBUS support
1772#device		atabus		# PC98 cbus support
1773#device		ataisa		# ISA bus support
1774#device		atapci		# PCI bus support; only generic chipset support
1775
1776# PCI ATA chipsets
1777#device		ataacard	# ACARD
1778#device		ataacerlabs	# Acer Labs Inc. (ALI)
1779#device		ataamd		# American Micro Devices (AMD)
1780#device		ataati		# ATI
1781#device		atacenatek	# Cenatek
1782#device		atacypress	# Cypress
1783#device		atacyrix	# Cyrix
1784#device		atahighpoint	# HighPoint
1785#device		ataintel	# Intel
1786#device		ataite		# Integrated Technology Inc. (ITE)
1787#device		atajmicron	# JMicron
1788#device		atamarvell	# Marvell
1789#device		atamicron	# Micron
1790#device		atanational	# National
1791#device		atanetcell	# NetCell
1792#device		atanvidia	# nVidia
1793#device		atapromise	# Promise
1794#device		ataserverworks	# ServerWorks
1795#device		atasiliconimage	# Silicon Image Inc. (SiI) (formerly CMD)
1796#device		atasis		# Silicon Integrated Systems Corp.(SiS)
1797#device		atavia		# VIA Technologies Inc.
1798
1799#
1800# For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1801hint.ata.0.at="isa"
1802hint.ata.0.port="0x1f0"
1803hint.ata.0.irq="14"
1804hint.ata.1.at="isa"
1805hint.ata.1.port="0x170"
1806hint.ata.1.irq="15"
1807
1808#
1809# The following options are valid on the ATA driver:
1810#
1811# ATA_REQUEST_TIMEOUT:	the number of seconds to wait for an ATA request
1812#			before timing out.
1813
1814#options 	ATA_REQUEST_TIMEOUT=10
1815
1816#
1817# Standard floppy disk controllers and floppy tapes, supports
1818# the Y-E DATA External FDD (PC Card)
1819#
1820device		fdc
1821hint.fdc.0.at="isa"
1822hint.fdc.0.port="0x3F0"
1823hint.fdc.0.irq="6"
1824hint.fdc.0.drq="2"
1825#
1826# FDC_DEBUG enables floppy debugging.  Since the debug output is huge, you
1827# gotta turn it actually on by setting the variable fd_debug with DDB,
1828# however.
1829options 	FDC_DEBUG
1830#
1831# Activate this line if you happen to have an Insight floppy tape.
1832# Probing them proved to be dangerous for people with floppy disks only,
1833# so it's "hidden" behind a flag:
1834#hint.fdc.0.flags="1"
1835
1836# Specify floppy devices
1837hint.fd.0.at="fdc0"
1838hint.fd.0.drive="0"
1839hint.fd.1.at="fdc0"
1840hint.fd.1.drive="1"
1841
1842#
1843# uart: newbusified driver for serial interfaces.  It consolidates the sio(4),
1844#	sab(4) and zs(4) drivers.
1845#
1846device		uart
1847
1848# Options for uart(4)
1849options 	UART_PPS_ON_CTS		# Do time pulse capturing using CTS
1850					# instead of DCD.
1851options 	UART_POLL_FREQ		# Set polling rate, used when hw has
1852					# no interrupt support (50 Hz default).
1853
1854# The following hint should only be used for pure ISA devices.  It is not
1855# needed otherwise.  Use of hints is strongly discouraged.
1856hint.uart.0.at="isa"
1857
1858# The following 3 hints are used when the UART is a system device (i.e., a
1859# console or debug port), but only on platforms that don't have any other
1860# means to pass the information to the kernel.  The unit number of the hint
1861# is only used to bundle the hints together.  There is no relation to the
1862# unit number of the probed UART.
1863hint.uart.0.port="0x3f8"
1864hint.uart.0.flags="0x10"
1865hint.uart.0.baud="115200"
1866
1867# `flags' for serial drivers that support consoles like sio(4) and uart(4):
1868#	0x10	enable console support for this unit.  Other console flags
1869#		(if applicable) are ignored unless this is set.  Enabling
1870#		console support does not make the unit the preferred console.
1871#		Boot with -h or set boot_serial=YES in the loader.  For sio(4)
1872#		specifically, the 0x20 flag can also be set (see above).
1873#		Currently, at most one unit can have console support; the
1874#		first one (in config file order) with this flag set is
1875#		preferred.  Setting this flag for sio0 gives the old behavior.
1876#	0x80	use this port for serial line gdb support in ddb.  Also known
1877#		as debug port.
1878#
1879
1880# Options for serial drivers that support consoles:
1881options 	BREAK_TO_DEBUGGER	# A BREAK/DBG on the console goes to
1882					# ddb, if available.
1883
1884# Solaris implements a new BREAK which is initiated by a character
1885# sequence CR ~ ^b which is similar to a familiar pattern used on
1886# Sun servers by the Remote Console.  There are FreeBSD extensions:
1887# CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
1888options 	ALT_BREAK_TO_DEBUGGER
1889
1890# Serial Communications Controller
1891# Supports the Siemens SAB 82532 and Zilog Z8530 multi-channel
1892# communications controllers.
1893device		scc
1894
1895# PCI Universal Communications driver
1896# Supports various multi port PCI I/O cards.
1897device		puc
1898
1899#
1900# Network interfaces:
1901#
1902# MII bus support is required for many PCI Ethernet NICs,
1903# namely those which use MII-compliant transceivers or implement
1904# transceiver control interfaces that operate like an MII.  Adding
1905# "device miibus" to the kernel config pulls in support for the generic
1906# miibus API, the common support for for bit-bang'ing the MII and all
1907# of the PHY drivers, including a generic one for PHYs that aren't
1908# specifically handled by an individual driver.  Support for specific
1909# PHYs may be built by adding "device mii", "device mii_bitbang" if
1910# needed by the NIC driver and then adding the appropriate PHY driver.
1911device  	mii		# Minimal MII support
1912device  	mii_bitbang	# Common module for bit-bang'ing the MII
1913device  	miibus		# MII support w/ bit-bang'ing and all PHYs
1914
1915device  	acphy		# Altima Communications AC101
1916device  	amphy		# AMD AM79c873 / Davicom DM910{1,2}
1917device  	atphy		# Attansic/Atheros F1
1918device  	axphy		# Asix Semiconductor AX88x9x
1919device  	bmtphy		# Broadcom BCM5201/BCM5202 and 3Com 3c905C
1920device  	brgphy		# Broadcom BCM54xx/57xx 1000baseTX
1921device  	ciphy		# Cicada/Vitesse CS/VSC8xxx
1922device  	e1000phy	# Marvell 88E1000 1000/100/10-BT
1923device  	gentbi		# Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
1924device  	icsphy		# ICS ICS1889-1893
1925device  	ip1000phy	# IC Plus IP1000A/IP1001
1926device  	jmphy		# JMicron JMP211/JMP202
1927device  	lxtphy		# Level One LXT-970
1928device  	mlphy		# Micro Linear 6692
1929device  	nsgphy		# NatSemi DP8361/DP83865/DP83891
1930device  	nsphy		# NatSemi DP83840A
1931device  	nsphyter	# NatSemi DP83843/DP83815
1932device  	pnaphy		# HomePNA
1933device  	qsphy		# Quality Semiconductor QS6612
1934device  	rdcphy		# RDC Semiconductor R6040
1935device  	rgephy		# RealTek 8169S/8110S/8211B/8211C
1936device  	rlphy		# RealTek 8139
1937device  	rlswitch	# RealTek 8305
1938device  	smcphy		# SMSC LAN91C111
1939device  	tdkphy		# TDK 89Q2120
1940device  	tlphy		# Texas Instruments ThunderLAN
1941device  	truephy		# LSI TruePHY
1942device		xmphy		# XaQti XMAC II
1943
1944# an:   Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
1945#       PCI and ISA varieties.
1946# ae:   Support for gigabit ethernet adapters based on the Attansic/Atheros
1947#       L2 PCI-Express FastEthernet controllers.
1948# age:  Support for gigabit ethernet adapters based on the Attansic/Atheros
1949#       L1 PCI express gigabit ethernet controllers.
1950# alc:  Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
1951# ale:  Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
1952# ath:  Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
1953# bce:	Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
1954#       adapters.
1955# bfe:	Broadcom BCM4401 Ethernet adapter.
1956# bge:	Support for gigabit ethernet adapters based on the Broadcom
1957#	BCM570x family of controllers, including the 3Com 3c996-T,
1958#	the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1959#	the embedded gigE NICs on Dell PowerEdge 2550 servers.
1960# bxe:	Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
1961#       adapters.
1962# bwi:	Broadcom BCM430* and BCM431* family of wireless adapters.
1963# bwn:	Broadcom BCM43xx family of wireless adapters.
1964# cas:	Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
1965# cm:	Arcnet SMC COM90c26 / SMC COM90c56
1966#	(and SMC COM90c66 in '56 compatibility mode) adapters.
1967# cxgb: Chelsio T3 based 1GbE/10GbE PCIe Ethernet adapters.
1968# cxgbe:Chelsio T4 and T5 based 1GbE/10GbE/40GbE PCIe Ethernet adapters.
1969# dc:   Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1970#       and various workalikes including:
1971#       the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1972#       AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1973#       82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1974#       and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1975#       replaces the old al, ax, dm, pn and mx drivers.  List of brands:
1976#       Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1977#       SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1978#       LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1979#       KNE110TX.
1980# de:   Digital Equipment DC21040
1981# em:   Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1982# igb:  Intel Pro/1000 PCI Express Gigabit Ethernet: 82575 and later adapters.
1983# ep:   3Com 3C509, 3C529, 3C556, 3C562D, 3C563D, 3C572, 3C574X, 3C579, 3C589
1984#       and PC Card devices using these chipsets.
1985# ex:   Intel EtherExpress Pro/10 and other i82595-based adapters,
1986#       Olicom Ethernet PC Card devices.
1987# fe:   Fujitsu MB86960A/MB86965A Ethernet
1988# fea:  DEC DEFEA EISA FDDI adapter
1989# fpa:  Support for the Digital DEFPA PCI FDDI. `device fddi' is also needed.
1990# fxp:  Intel EtherExpress Pro/100B
1991#	(hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
1992# gem:  Apple GMAC/Sun ERI/Sun GEM
1993# hme:  Sun HME (Happy Meal Ethernet)
1994# jme:  JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
1995# le:   AMD Am7900 LANCE and Am79C9xx PCnet
1996# lge:	Support for PCI gigabit ethernet adapters based on the Level 1
1997#	LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1998#	SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1999# malo: Marvell Libertas wireless NICs.
2000# mwl:  Marvell 88W8363 802.11n wireless NICs.
2001#	Requires the mwl firmware module
2002# mwlfw: Marvell 88W8363 firmware
2003# msk:	Support for gigabit ethernet adapters based on the Marvell/SysKonnect
2004#	Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
2005#	88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
2006#	88E8055, 88E8056 and D-Link 560T/550SX.
2007# lmc:	Support for the LMC/SBE wide-area network interface cards.
2008# mlx5:	Mellanox ConnectX-4 and ConnectX-4 LX IB and Eth shared code module.
2009# mlx5en:Mellanox ConnectX-4 and ConnectX-4 LX PCIe Ethernet adapters.
2010# my:	Myson Fast Ethernet (MTD80X, MTD89X)
2011# nge:	Support for PCI gigabit ethernet adapters based on the National
2012#	Semiconductor DP83820 and DP83821 chipset. This includes the
2013#	SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
2014#	GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
2015#	EP-320G-TX and the Netgear GA622T.
2016# oce:	Emulex 10 Gbit adapters (OneConnect Ethernet)
2017# pcn:	Support for PCI fast ethernet adapters based on the AMD Am79c97x
2018#	PCnet-FAST, PCnet-FAST+, PCnet-FAST III, PCnet-PRO and PCnet-Home
2019#	chipsets. These can also be handled by the le(4) driver if the
2020#	pcn(4) driver is left out of the kernel. The le(4) driver does not
2021#	support the additional features like the MII bus and burst mode of
2022#	the PCnet-FAST and greater chipsets though.
2023# ral:	Ralink Technology IEEE 802.11 wireless adapter
2024# re:   RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
2025# rl:   Support for PCI fast ethernet adapters based on the RealTek 8129/8139
2026#       chipset.  Note that the RealTek driver defaults to using programmed
2027#       I/O to do register accesses because memory mapped mode seems to cause
2028#       severe lockups on SMP hardware.  This driver also supports the
2029#       Accton EN1207D `Cheetah' adapter, which uses a chip called
2030#       the MPX 5030/5038, which is either a RealTek in disguise or a
2031#       RealTek workalike.  Note that the D-Link DFE-530TX+ uses the RealTek
2032#       chipset and is supported by this driver, not the 'vr' driver.
2033# rtwn: RealTek wireless adapters.
2034# rtwnfw: RealTek wireless firmware.
2035# sf:   Support for Adaptec Duralink PCI fast ethernet adapters based on the
2036#       Adaptec AIC-6915 "starfire" controller.
2037#       This includes dual and quad port cards, as well as one 100baseFX card.
2038#       Most of these are 64-bit PCI devices, except for one single port
2039#       card which is 32-bit.
2040# sge:  Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
2041# sis:  Support for NICs based on the Silicon Integrated Systems SiS 900,
2042#       SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
2043# sk:   Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
2044#       This includes the SK-9841 and SK-9842 single port cards (single mode
2045#       and multimode fiber) and the SK-9843 and SK-9844 dual port cards
2046#       (also single mode and multimode).
2047#       The driver will autodetect the number of ports on the card and
2048#       attach each one as a separate network interface.
2049# sn:   Support for ISA and PC Card Ethernet devices using the
2050#       SMC91C90/92/94/95 chips.
2051# ste:  Sundance Technologies ST201 PCI fast ethernet controller, includes
2052#       the D-Link DFE-550TX.
2053# stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
2054#       TC9021 family of controllers, including the Sundance ST2021/ST2023,
2055#       the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
2056# ti:   Support for PCI gigabit ethernet NICs based on the Alteon Networks
2057#       Tigon 1 and Tigon 2 chipsets.  This includes the Alteon AceNIC, the
2058#       3Com 3c985, the Netgear GA620 and various others.  Note that you will
2059#       probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
2060# tl:   Support for the Texas Instruments TNETE100 series 'ThunderLAN'
2061#       cards and integrated ethernet controllers.  This includes several
2062#       Compaq Netelligent 10/100 cards and the built-in ethernet controllers
2063#       in several Compaq Prosignia, Proliant and Deskpro systems.  It also
2064#       supports several Olicom 10Mbps and 10/100 boards.
2065# tx:   SMC 9432 TX, BTX and FTX cards. (SMC EtherPower II series)
2066# txp:	Support for 3Com 3cR990 cards with the "Typhoon" chipset
2067# vr:   Support for various fast ethernet adapters based on the VIA
2068#       Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
2069#       including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
2070#       DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
2071# vte:  DM&P Vortex86 RDC R6040 Fast Ethernet
2072# vx:   3Com 3C590 and 3C595
2073# wb:   Support for fast ethernet adapters based on the Winbond W89C840F chip.
2074#       Note: this is not the same as the Winbond W89C940F, which is a
2075#       NE2000 clone.
2076# wi:   Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
2077#       the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
2078#       bridge with a PCMCIA adapter plugged into it.
2079# xe:   Xircom/Intel EtherExpress Pro100/16 PC Card ethernet controller,
2080#       Accton Fast EtherCard-16, Compaq Netelligent 10/100 PC Card,
2081#       Toshiba 10/100 Ethernet PC Card, Xircom 16-bit Ethernet + Modem 56
2082# xl:   Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
2083#       Etherlink XL cards and integrated controllers.  This includes the
2084#       integrated 3c905B-TX chips in certain Dell Optiplex and Dell
2085#       Precision desktop machines and the integrated 3c905-TX chips
2086#       in Dell Latitude laptop docking stations.
2087#       Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
2088
2089# Order for ISA/EISA devices is important here
2090
2091device		cm
2092hint.cm.0.at="isa"
2093hint.cm.0.port="0x2e0"
2094hint.cm.0.irq="9"
2095hint.cm.0.maddr="0xdc000"
2096device		ep
2097device		ex
2098device		fe
2099hint.fe.0.at="isa"
2100hint.fe.0.port="0x300"
2101device		fea
2102device		sn
2103hint.sn.0.at="isa"
2104hint.sn.0.port="0x300"
2105hint.sn.0.irq="10"
2106device		an
2107device		wi
2108device		xe
2109
2110# PCI Ethernet NICs that use the common MII bus controller code.
2111device		ae		# Attansic/Atheros L2 FastEthernet
2112device		age		# Attansic/Atheros L1 Gigabit Ethernet
2113device		alc		# Atheros AR8131/AR8132 Ethernet
2114device		ale		# Atheros AR8121/AR8113/AR8114 Ethernet
2115device		bce		# Broadcom BCM5706/BCM5708 Gigabit Ethernet
2116device		bfe		# Broadcom BCM440x 10/100 Ethernet
2117device		bge		# Broadcom BCM570xx Gigabit Ethernet
2118device		cas		# Sun Cassini/Cassini+ and NS DP83065 Saturn
2119device		cxgb		# Chelsio T3 10 Gigabit Ethernet
2120device		cxgb_t3fw	# Chelsio T3 10 Gigabit Ethernet firmware
2121device		cxgbe		# Chelsio T4 and T5 1GbE/10GbE/40GbE
2122device		dc		# DEC/Intel 21143 and various workalikes
2123device		et		# Agere ET1310 10/100/Gigabit Ethernet
2124device		fxp		# Intel EtherExpress PRO/100B (82557, 82558)
2125hint.fxp.0.prefer_iomap="0"
2126device		gem		# Apple GMAC/Sun ERI/Sun GEM
2127device		hme		# Sun HME (Happy Meal Ethernet)
2128device		jme		# JMicron JMC250 Gigabit/JMC260 Fast Ethernet
2129device		lge		# Level 1 LXT1001 gigabit Ethernet
2130device		mlx5		# Shared code module between IB and Ethernet
2131device		mlx5en		# Mellanox ConnectX-4 and ConnectX-4 LX
2132device		msk		# Marvell/SysKonnect Yukon II Gigabit Ethernet
2133device		my		# Myson Fast Ethernet (MTD80X, MTD89X)
2134device		nge		# NatSemi DP83820 gigabit Ethernet
2135device		re		# RealTek 8139C+/8169/8169S/8110S
2136device		rl		# RealTek 8129/8139
2137device		pcn		# AMD Am79C97x PCI 10/100 NICs
2138device		sf		# Adaptec AIC-6915 (``Starfire'')
2139device		sge		# Silicon Integrated Systems SiS190/191
2140device		sis		# Silicon Integrated Systems SiS 900/SiS 7016
2141device		sk		# SysKonnect SK-984x & SK-982x gigabit Ethernet
2142device		ste		# Sundance ST201 (D-Link DFE-550TX)
2143device		stge		# Sundance/Tamarack TC9021 gigabit Ethernet
2144device		tl		# Texas Instruments ThunderLAN
2145device		tx		# SMC EtherPower II (83c170 ``EPIC'')
2146device		vr		# VIA Rhine, Rhine II
2147device		vte		# DM&P Vortex86 RDC R6040 Fast Ethernet
2148device		wb		# Winbond W89C840F
2149device		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')
2150
2151# PCI Ethernet NICs.
2152device		de		# DEC/Intel DC21x4x (``Tulip'')
2153device		em		# Intel Pro/1000 Gigabit Ethernet
2154device		igb		# Intel Pro/1000 PCIE Gigabit Ethernet
2155device		ixgb		# Intel Pro/10Gbe PCI-X Ethernet
2156device		ix		# Intel Pro/10Gbe PCIE Ethernet
2157device		ixv		# Intel Pro/10Gbe PCIE Ethernet VF
2158device		le		# AMD Am7900 LANCE and Am79C9xx PCnet
2159device		mxge		# Myricom Myri-10G 10GbE NIC
2160device		nxge		# Neterion Xframe 10GbE Server/Storage Adapter
2161device		oce		# Emulex 10 GbE (OneConnect Ethernet)
2162device		ti		# Alteon Networks Tigon I/II gigabit Ethernet
2163device		txp		# 3Com 3cR990 (``Typhoon'')
2164device		vx		# 3Com 3c590, 3c595 (``Vortex'')
2165device		vxge		# Exar/Neterion XFrame 3100 10GbE
2166
2167# PCI FDDI NICs.
2168device		fpa
2169
2170# PCI WAN adapters.
2171device		lmc
2172
2173# PCI IEEE 802.11 Wireless NICs
2174device		ath		# Atheros pci/cardbus NIC's
2175device		ath_hal		# pci/cardbus chip support
2176#device		ath_ar5210	# AR5210 chips
2177#device		ath_ar5211	# AR5211 chips
2178#device		ath_ar5212	# AR5212 chips
2179#device		ath_rf2413
2180#device		ath_rf2417
2181#device		ath_rf2425
2182#device		ath_rf5111
2183#device		ath_rf5112
2184#device		ath_rf5413
2185#device		ath_ar5416	# AR5416 chips
2186options 	AH_SUPPORT_AR5416	# enable AR5416 tx/rx descriptors
2187# All of the AR5212 parts have a problem when paired with the AR71xx
2188# CPUS.  These parts have a bug that triggers a fatal bus error on the AR71xx
2189# only.  Details of the exact nature of the bug are sketchy, but some can be
2190# found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
2191# 6.  This option enables this workaround.  There is a performance penalty
2192# for this work around, but without it things don't work at all.  The DMA
2193# from the card usually bursts 128 bytes, but on the affected CPUs, only
2194# 4 are safe.
2195options	   	AH_RXCFG_SDMAMW_4BYTES
2196#device		ath_ar9160	# AR9160 chips
2197#device		ath_ar9280	# AR9280 chips
2198#device		ath_ar9285	# AR9285 chips
2199device		ath_rate_sample	# SampleRate tx rate control for ath
2200device		bwi		# Broadcom BCM430* BCM431*
2201device		bwn		# Broadcom BCM43xx
2202device		malo		# Marvell Libertas wireless NICs.
2203device		mwl		# Marvell 88W8363 802.11n wireless NICs.
2204device		mwlfw
2205device		ral		# Ralink Technology RT2500 wireless NICs.
2206device		rtwn		# Realtek wireless NICs
2207device		rtwnfw
2208
2209# Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
2210#options 	TI_SF_BUF_JUMBO
2211# Turn on the header splitting option for the ti(4) driver firmware.  This
2212# only works for Tigon II chips, and has no effect for Tigon I chips.
2213# This option requires the TI_SF_BUF_JUMBO option above.
2214#options 	TI_JUMBO_HDRSPLIT
2215
2216# These two options allow manipulating the mbuf cluster size and mbuf size,
2217# respectively.  Be very careful with NIC driver modules when changing
2218# these from their default values, because that can potentially cause a
2219# mismatch between the mbuf size assumed by the kernel and the mbuf size
2220# assumed by a module.  The only driver that currently has the ability to
2221# detect a mismatch is ti(4).
2222options 	MCLSHIFT=12	# mbuf cluster shift in bits, 12 == 4KB
2223options 	MSIZE=512	# mbuf size in bytes
2224
2225#
2226# ATM related options (Cranor version)
2227# (note: this driver cannot be used with the HARP ATM stack)
2228#
2229# The `en' device provides support for Efficient Networks (ENI)
2230# ENI-155 PCI midway cards, and the Adaptec 155Mbps PCI ATM cards (ANA-59x0).
2231#
2232# The `hatm' device provides support for Fore/Marconi HE155 and HE622
2233# ATM PCI cards.
2234#
2235# The `fatm' device provides support for Fore PCA200E ATM PCI cards.
2236#
2237# The `patm' device provides support for IDT77252 based cards like
2238# ProSum's ProATM-155 and ProATM-25 and IDT's evaluation boards.
2239#
2240# atm device provides generic atm functions and is required for
2241# atm devices.
2242# NATM enables the netnatm protocol family that can be used to
2243# bypass TCP/IP.
2244#
2245# utopia provides the access to the ATM PHY chips and is required for en,
2246# hatm and fatm.
2247#
2248# the current driver supports only PVC operations (no atm-arp, no multicast).
2249# for more details, please read the original documents at
2250# http://www.ccrc.wustl.edu/pub/chuck/tech/bsdatm/bsdatm.html
2251#
2252device		atm
2253device		en
2254device		fatm			#Fore PCA200E
2255device		hatm			#Fore/Marconi HE155/622
2256device		patm			#IDT77252 cards (ProATM and IDT)
2257device		utopia			#ATM PHY driver
2258options 	NATM			#native ATM
2259
2260options 	LIBMBPOOL		#needed by patm, iatm
2261
2262#
2263# Sound drivers
2264#
2265# sound: The generic sound driver.
2266#
2267
2268device		sound
2269
2270#
2271# snd_*: Device-specific drivers.
2272#
2273# The flags of the device tell the device a bit more info about the
2274# device that normally is obtained through the PnP interface.
2275#	bit  2..0   secondary DMA channel;
2276#	bit  4      set if the board uses two dma channels;
2277#	bit 15..8   board type, overrides autodetection; leave it
2278#		    zero if don't know what to put in (and you don't,
2279#		    since this is unsupported at the moment...).
2280#
2281# snd_ad1816:		Analog Devices AD1816 ISA PnP/non-PnP.
2282# snd_als4000:		Avance Logic ALS4000 PCI.
2283# snd_atiixp:		ATI IXP 200/300/400 PCI.
2284# snd_audiocs:		Crystal Semiconductor CS4231 SBus/EBus. Only
2285#			for sparc64.
2286# snd_cmi:		CMedia CMI8338/CMI8738 PCI.
2287# snd_cs4281:		Crystal Semiconductor CS4281 PCI.
2288# snd_csa:		Crystal Semiconductor CS461x/428x PCI. (except
2289#			4281)
2290# snd_ds1:		Yamaha DS-1 PCI.
2291# snd_emu10k1:		Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
2292# snd_emu10kx:		Creative SoundBlaster Live! and Audigy
2293# snd_envy24:		VIA Envy24 and compatible, needs snd_spicds.
2294# snd_envy24ht:		VIA Envy24HT and compatible, needs snd_spicds.
2295# snd_es137x:		Ensoniq AudioPCI ES137x PCI.
2296# snd_ess:		Ensoniq ESS ISA PnP/non-PnP, to be used in
2297#			conjunction with snd_sbc.
2298# snd_fm801:		Forte Media FM801 PCI.
2299# snd_gusc:		Gravis UltraSound ISA PnP/non-PnP.
2300# snd_hda:		Intel High Definition Audio (Controller) and
2301#			compatible.
2302# snd_hdspe:		RME HDSPe AIO and RayDAT.
2303# snd_ich:		Intel ICH AC'97 and some more audio controllers
2304#			embedded in a chipset, for example nVidia
2305#			nForce controllers.
2306# snd_maestro:		ESS Technology Maestro-1/2x PCI.
2307# snd_maestro3:		ESS Technology Maestro-3/Allegro PCI.
2308# snd_mss:		Microsoft Sound System ISA PnP/non-PnP.
2309# snd_neomagic:		Neomagic 256 AV/ZX PCI.
2310# snd_sb16:		Creative SoundBlaster16, to be used in
2311#			conjunction with snd_sbc.
2312# snd_sb8:		Creative SoundBlaster (pre-16), to be used in
2313#			conjunction with snd_sbc.
2314# snd_sbc:		Creative SoundBlaster ISA PnP/non-PnP.
2315#			Supports ESS and Avance ISA chips as well.
2316# snd_solo:		ESS Solo-1x PCI.
2317# snd_spicds:		SPI codec driver, needed by Envy24/Envy24HT drivers.
2318# snd_t4dwave:		Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
2319#			M5451 PCI.
2320# snd_uaudio:		USB audio.
2321# snd_via8233:		VIA VT8233x PCI.
2322# snd_via82c686:	VIA VT82C686A PCI.
2323# snd_vibes:		S3 Sonicvibes PCI.
2324
2325device		snd_ad1816
2326device		snd_als4000
2327device		snd_atiixp
2328#device		snd_audiocs
2329device		snd_cmi
2330device		snd_cs4281
2331device		snd_csa
2332device		snd_ds1
2333device		snd_emu10k1
2334device		snd_emu10kx
2335device		snd_envy24
2336device		snd_envy24ht
2337device		snd_es137x
2338device		snd_ess
2339device		snd_fm801
2340device		snd_gusc
2341device		snd_hda
2342device		snd_hdspe
2343device		snd_ich
2344device		snd_maestro
2345device		snd_maestro3
2346device		snd_mss
2347device		snd_neomagic
2348device		snd_sb16
2349device		snd_sb8
2350device		snd_sbc
2351device		snd_solo
2352device		snd_spicds
2353device		snd_t4dwave
2354device		snd_uaudio
2355device		snd_via8233
2356device		snd_via82c686
2357device		snd_vibes
2358
2359# For non-PnP sound cards:
2360hint.pcm.0.at="isa"
2361hint.pcm.0.irq="10"
2362hint.pcm.0.drq="1"
2363hint.pcm.0.flags="0x0"
2364hint.sbc.0.at="isa"
2365hint.sbc.0.port="0x220"
2366hint.sbc.0.irq="5"
2367hint.sbc.0.drq="1"
2368hint.sbc.0.flags="0x15"
2369hint.gusc.0.at="isa"
2370hint.gusc.0.port="0x220"
2371hint.gusc.0.irq="5"
2372hint.gusc.0.drq="1"
2373hint.gusc.0.flags="0x13"
2374
2375#
2376# Following options are intended for debugging/testing purposes:
2377#
2378# SND_DEBUG                    Enable extra debugging code that includes
2379#                              sanity checking and possible increase of
2380#                              verbosity.
2381#
2382# SND_DIAGNOSTIC               Similar in a spirit of INVARIANTS/DIAGNOSTIC,
2383#                              zero tolerance against inconsistencies.
2384#
2385# SND_FEEDER_MULTIFORMAT       By default, only 16/32 bit feeders are compiled
2386#                              in. This options enable most feeder converters
2387#                              except for 8bit. WARNING: May bloat the kernel.
2388#
2389# SND_FEEDER_FULL_MULTIFORMAT  Ditto, but includes 8bit feeders as well.
2390#
2391# SND_FEEDER_RATE_HP           (feeder_rate) High precision 64bit arithmetic
2392#                              as much as possible (the default trying to
2393#                              avoid it). Possible slowdown.
2394#
2395# SND_PCM_64                   (Only applicable for i386/32bit arch)
2396#                              Process 32bit samples through 64bit
2397#                              integer/arithmetic. Slight increase of dynamic
2398#                              range at a cost of possible slowdown.
2399#
2400# SND_OLDSTEREO                Only 2 channels are allowed, effectively
2401#                              disabling multichannel processing.
2402#
2403options		SND_DEBUG
2404options		SND_DIAGNOSTIC
2405options		SND_FEEDER_MULTIFORMAT
2406options		SND_FEEDER_FULL_MULTIFORMAT
2407options		SND_FEEDER_RATE_HP
2408options		SND_PCM_64
2409options		SND_OLDSTEREO
2410
2411#
2412# Miscellaneous hardware:
2413#
2414# scd: Sony CD-ROM using proprietary (non-ATAPI) interface
2415# mcd: Mitsumi CD-ROM using proprietary (non-ATAPI) interface
2416# bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
2417# joy: joystick (including IO DATA PCJOY PC Card joystick)
2418# cmx: OmniKey CardMan 4040 pccard smartcard reader
2419
2420# Mitsumi CD-ROM
2421device		mcd
2422hint.mcd.0.at="isa"
2423hint.mcd.0.port="0x300"
2424# for the Sony CDU31/33A CDROM
2425device		scd
2426hint.scd.0.at="isa"
2427hint.scd.0.port="0x230"
2428device		joy			# PnP aware, hints for non-PnP only
2429hint.joy.0.at="isa"
2430hint.joy.0.port="0x201"
2431device		cmx
2432
2433#
2434# The 'bktr' device is a PCI video capture device using the Brooktree
2435# bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
2436# TV card, e.g. Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
2437# Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
2438#
2439# options 	OVERRIDE_CARD=xxx
2440# options 	OVERRIDE_TUNER=xxx
2441# options 	OVERRIDE_MSP=1
2442# options 	OVERRIDE_DBX=1
2443# These options can be used to override the auto detection
2444# The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
2445# Using sysctl(8) run-time overrides on a per-card basis can be made
2446#
2447# options 	BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
2448# or
2449# options 	BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
2450# Specifies the default video capture mode.
2451# This is required for Dual Crystal (28&35MHz) boards where PAL is used
2452# to prevent hangs during initialization, e.g. VideoLogic Captivator PCI.
2453#
2454# options 	BKTR_USE_PLL
2455# This is required for PAL or SECAM boards with a 28MHz crystal and no 35MHz
2456# crystal, e.g. some new Bt878 cards.
2457#
2458# options 	BKTR_GPIO_ACCESS
2459# This enables IOCTLs which give user level access to the GPIO port.
2460#
2461# options 	BKTR_NO_MSP_RESET
2462# Prevents the MSP34xx reset. Good if you initialize the MSP in another OS first
2463#
2464# options 	BKTR_430_FX_MODE
2465# Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
2466#
2467# options 	BKTR_SIS_VIA_MODE
2468# Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
2469# needed for some old SiS and VIA chipset motherboards.
2470# This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
2471# motherboards and motherboards with bad or incomplete PCI 2.1 support.
2472# As a rough guess, old = before 1998
2473#
2474# options 	BKTR_NEW_MSP34XX_DRIVER
2475# Use new, more complete initialization scheme for the msp34* soundchip.
2476# Should fix stereo autodetection if the old driver does only output
2477# mono sound.
2478
2479#
2480# options 	BKTR_USE_FREEBSD_SMBUS
2481# Compile with FreeBSD SMBus implementation
2482#
2483# Brooktree driver has been ported to the new I2C framework. Thus,
2484# you'll need to have the following 3 lines in the kernel config.
2485#     device smbus
2486#     device iicbus
2487#     device iicbb
2488#     device iicsmb
2489# The iic and smb devices are only needed if you want to control other
2490# I2C slaves connected to the external connector of some cards.
2491#
2492device		bktr
2493
2494#
2495# PC Card/PCMCIA and Cardbus
2496#
2497# cbb: pci/cardbus bridge implementing YENTA interface
2498# pccard: pccard slots
2499# cardbus: cardbus slots
2500device		cbb
2501device		pccard
2502device		cardbus
2503
2504#
2505# MMC/SD
2506#
2507# mmc 		MMC/SD bus
2508# mmcsd		MMC/SD memory card
2509# sdhci		Generic PCI SD Host Controller
2510#
2511device		mmc
2512device		mmcsd
2513device		sdhci
2514
2515#
2516# SMB bus
2517#
2518# System Management Bus support is provided by the 'smbus' device.
2519# Access to the SMBus device is via the 'smb' device (/dev/smb*),
2520# which is a child of the 'smbus' device.
2521#
2522# Supported devices:
2523# smb		standard I/O through /dev/smb*
2524#
2525# Supported SMB interfaces:
2526# iicsmb	I2C to SMB bridge with any iicbus interface
2527# bktr		brooktree848 I2C hardware interface
2528# intpm		Intel PIIX4 (82371AB, 82443MX) Power Management Unit
2529# alpm		Acer Aladdin-IV/V/Pro2 Power Management Unit
2530# ichsmb	Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
2531# viapm		VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2532# amdpm		AMD 756 Power Management Unit
2533# amdsmb	AMD 8111 SMBus 2.0 Controller
2534# nfpm		NVIDIA nForce Power Management Unit
2535# nfsmb		NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
2536# ismt		Intel SMBus 2.0 controller chips (on Atom S1200, C2000)
2537#
2538device		smbus		# Bus support, required for smb below.
2539
2540device		intpm
2541device		alpm
2542device		ichsmb
2543device		viapm
2544device		amdpm
2545device		amdsmb
2546device		nfpm
2547device		nfsmb
2548device		ismt
2549
2550device		smb
2551
2552#
2553# I2C Bus
2554#
2555# Philips i2c bus support is provided by the `iicbus' device.
2556#
2557# Supported devices:
2558# ic	i2c network interface
2559# iic	i2c standard io
2560# iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
2561# iicoc simple polling driver for OpenCores I2C controller
2562#
2563# Supported interfaces:
2564# bktr	brooktree848 I2C software interface
2565#
2566# Other:
2567# iicbb	generic I2C bit-banging code (needed by lpbb, bktr)
2568#
2569device		iicbus		# Bus support, required for ic/iic/iicsmb below.
2570device		iicbb
2571
2572device		ic
2573device		iic
2574device		iicsmb		# smb over i2c bridge
2575device		iicoc		# OpenCores I2C controller support
2576
2577# I2C peripheral devices
2578#
2579# ds133x	Dallas Semiconductor DS1337, DS1338 and DS1339 RTC
2580# ds1374	Dallas Semiconductor DS1374 RTC
2581# ds1672	Dallas Semiconductor DS1672 RTC
2582# s35390a	Seiko Instruments S-35390A RTC
2583#
2584device		ds133x
2585device		ds1374
2586device		ds1672
2587device		s35390a
2588
2589# Parallel-Port Bus
2590#
2591# Parallel port bus support is provided by the `ppbus' device.
2592# Multiple devices may be attached to the parallel port, devices
2593# are automatically probed and attached when found.
2594#
2595# Supported devices:
2596# vpo	Iomega Zip Drive
2597#	Requires SCSI disk support ('scbus' and 'da'), best
2598#	performance is achieved with ports in EPP 1.9 mode.
2599# lpt	Parallel Printer
2600# plip	Parallel network interface
2601# ppi	General-purpose I/O ("Geek Port") + IEEE1284 I/O
2602# pps	Pulse per second Timing Interface
2603# lpbb	Philips official parallel port I2C bit-banging interface
2604# pcfclock Parallel port clock driver.
2605#
2606# Supported interfaces:
2607# ppc	ISA-bus parallel port interfaces.
2608#
2609
2610options 	PPC_PROBE_CHIPSET # Enable chipset specific detection
2611				  # (see flags in ppc(4))
2612options 	DEBUG_1284	# IEEE1284 signaling protocol debug
2613options 	PERIPH_1284	# Makes your computer act as an IEEE1284
2614				# compliant peripheral
2615options 	DONTPROBE_1284	# Avoid boot detection of PnP parallel devices
2616options 	VP0_DEBUG	# ZIP/ZIP+ debug
2617options 	LPT_DEBUG	# Printer driver debug
2618options 	PPC_DEBUG	# Parallel chipset level debug
2619options 	PLIP_DEBUG	# Parallel network IP interface debug
2620options 	PCFCLOCK_VERBOSE         # Verbose pcfclock driver
2621options 	PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)
2622
2623device		ppc
2624hint.ppc.0.at="isa"
2625hint.ppc.0.irq="7"
2626device		ppbus
2627device		vpo
2628device		lpt
2629device		plip
2630device		ppi
2631device		pps
2632device		lpbb
2633device		pcfclock
2634
2635#
2636# Etherswitch framework and drivers
2637#
2638# etherswitch	The etherswitch(4) framework
2639# miiproxy	Proxy device for miibus(4) functionality
2640#
2641# Switch hardware support:
2642# arswitch	Atheros switches
2643# ip17x 	IC+ 17x family switches
2644# rtl8366r	Realtek RTL8366 switches
2645# ukswitch	Multi-PHY switches
2646#
2647device		etherswitch
2648device		miiproxy
2649device		arswitch
2650device		ip17x
2651device		rtl8366rb
2652device		ukswitch
2653
2654# Kernel BOOTP support
2655
2656options 	BOOTP		# Use BOOTP to obtain IP address/hostname
2657				# Requires NFSCL and NFS_ROOT
2658options 	BOOTP_NFSROOT	# NFS mount root filesystem using BOOTP info
2659options 	BOOTP_NFSV3	# Use NFS v3 to NFS mount root
2660options 	BOOTP_COMPAT	# Workaround for broken bootp daemons.
2661options 	BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2662options 	BOOTP_BLOCKSIZE=8192 # Override NFS block size
2663
2664#
2665# Add software watchdog routines.
2666#
2667options 	SW_WATCHDOG
2668
2669#
2670# Add the software deadlock resolver thread.
2671#
2672options 	DEADLKRES
2673
2674#
2675# Disable swapping of stack pages.  This option removes all
2676# code which actually performs swapping, so it's not possible to turn
2677# it back on at run-time.
2678#
2679# This is sometimes usable for systems which don't have any swap space
2680# (see also sysctls "vm.defer_swapspace_pageouts" and
2681# "vm.disable_swapspace_pageouts")
2682#
2683#options 	NO_SWAPPING
2684
2685# Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
2686# for sendfile(2) that are used to map file VM pages, and normally
2687# default to a quantity that is roughly 16*MAXUSERS+512. You would
2688# typically want about 4 of these for each simultaneous file send.
2689#
2690options 	NSFBUFS=1024
2691
2692#
2693# Enable extra debugging code for locks.  This stores the filename and
2694# line of whatever acquired the lock in the lock itself, and changes a
2695# number of function calls to pass around the relevant data.  This is
2696# not at all useful unless you are debugging lock code.  Note that
2697# modules should be recompiled as this option modifies KBI.
2698#
2699options 	DEBUG_LOCKS
2700
2701
2702#####################################################################
2703# USB support
2704# UHCI controller
2705device		uhci
2706# OHCI controller
2707device		ohci
2708# EHCI controller
2709device		ehci
2710# XHCI controller
2711device		xhci
2712# SL811 Controller
2713#device		slhci
2714# General USB code (mandatory for USB)
2715device		usb
2716#
2717# USB Double Bulk Pipe devices
2718device		udbp
2719# USB Fm Radio
2720device		ufm
2721# USB temperature meter
2722device		ugold
2723# USB LED
2724device		uled
2725# Human Interface Device (anything with buttons and dials)
2726device		uhid
2727# USB keyboard
2728device		ukbd
2729# USB printer
2730device		ulpt
2731# USB mass storage driver (Requires scbus and da)
2732device		umass
2733# USB mass storage driver for device-side mode
2734device		usfs
2735# USB support for Belkin F5U109 and Magic Control Technology serial adapters
2736device		umct
2737# USB modem support
2738device		umodem
2739# USB mouse
2740device		ums
2741# USB touchpad(s)
2742device		atp
2743device		wsp
2744# eGalax USB touch screen
2745device		uep
2746# Diamond Rio 500 MP3 player
2747device		urio
2748#
2749# USB serial support
2750device		ucom
2751# USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
2752device		u3g
2753# USB support for Technologies ARK3116 based serial adapters
2754device		uark
2755# USB support for Belkin F5U103 and compatible serial adapters
2756device		ubsa
2757# USB support for serial adapters based on the FT8U100AX and FT8U232AM
2758device		uftdi
2759# USB support for some Windows CE based serial communication.
2760device		uipaq
2761# USB support for Prolific PL-2303 serial adapters
2762device		uplcom
2763# USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
2764device		uslcom
2765# USB Visor and Palm devices
2766device		uvisor
2767# USB serial support for DDI pocket's PHS
2768device		uvscom
2769#
2770# USB ethernet support
2771device		uether
2772# ADMtek USB ethernet. Supports the LinkSys USB100TX,
2773# the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2774# and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2775# eval board.
2776device		aue
2777
2778# ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2779# LinkSys USB200M and various other adapters.
2780device		axe
2781# ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
2782device		axge
2783
2784#
2785# Devices which communicate using Ethernet over USB, particularly
2786# Communication Device Class (CDC) Ethernet specification. Supports
2787# Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
2788device		cdce
2789#
2790# CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
2791# and Netmate II, and the Belkin F5U111.
2792device		cue
2793#
2794# Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2795# Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2796# 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
2797# the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
2798# and 2104USB, and the Corega USB-T.
2799device		kue
2800#
2801# RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
2802# and the GREEN HOUSE GH-USB100B.
2803device		rue
2804#
2805# Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2806device		udav
2807#
2808# RealTek RTL8152 USB to fast ethernet.
2809device		ure
2810#
2811# Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
2812device		mos
2813#
2814# HSxPA devices from Option N.V
2815device		uhso
2816
2817# Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
2818device		rsu
2819#
2820# Ralink Technology RT2501USB/RT2601USB wireless driver
2821device		rum
2822# Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
2823device		run
2824#
2825# Atheros AR5523 wireless driver
2826device		uath
2827#
2828# Conexant/Intersil PrismGT wireless driver
2829device		upgt
2830#
2831# Ralink Technology RT2500USB wireless driver
2832device		ural
2833#
2834# RNDIS USB ethernet driver
2835device		urndis
2836# Realtek RTL8187B/L wireless driver
2837device		urtw
2838#
2839# ZyDas ZD1211/ZD1211B wireless driver
2840device		zyd
2841#
2842# Sierra USB wireless driver
2843device		usie
2844
2845#
2846# debugging options for the USB subsystem
2847#
2848options 	USB_DEBUG
2849options 	U3G_DEBUG
2850
2851# options for ukbd:
2852options 	UKBD_DFLT_KEYMAP	# specify the built-in keymap
2853makeoptions	UKBD_DFLT_KEYMAP=jp.pc98
2854
2855# options for uplcom:
2856options 	UPLCOM_INTR_INTERVAL=100	# interrupt pipe interval
2857						# in milliseconds
2858
2859# options for uvscom:
2860options 	UVSCOM_DEFAULT_OPKTSIZE=8	# default output packet size
2861options 	UVSCOM_INTR_INTERVAL=100	# interrupt pipe interval
2862						# in milliseconds
2863
2864#####################################################################
2865# FireWire support
2866
2867device		firewire	# FireWire bus code
2868device		sbp		# SCSI over Firewire (Requires scbus and da)
2869device		sbp_targ	# SBP-2 Target mode  (Requires scbus and targ)
2870device		fwe		# Ethernet over FireWire (non-standard!)
2871device		fwip		# IP over FireWire (RFC2734 and RFC3146)
2872
2873#####################################################################
2874# dcons support (Dumb Console Device)
2875
2876device		dcons			# dumb console driver
2877device		dcons_crom		# FireWire attachment
2878options 	DCONS_BUF_SIZE=16384	# buffer size
2879options 	DCONS_POLL_HZ=100	# polling rate
2880options 	DCONS_FORCE_CONSOLE=0	# force to be the primary console
2881options 	DCONS_FORCE_GDB=1	# force to be the gdb device
2882
2883#####################################################################
2884# crypto subsystem
2885#
2886# This is a port of the OpenBSD crypto framework.  Include this when
2887# configuring IPSEC and when you have a h/w crypto device to accelerate
2888# user applications that link to OpenSSL.
2889#
2890# Drivers are ports from OpenBSD with some simple enhancements that have
2891# been fed back to OpenBSD.
2892
2893device		crypto		# core crypto support
2894
2895# Only install the cryptodev device if you are running tests, or know
2896# specifically why you need it.  In most cases, it is not needed and
2897# will make things slower.
2898device		cryptodev	# /dev/crypto for access to h/w
2899
2900device		rndtest		# FIPS 140-2 entropy tester
2901
2902device		hifn		# Hifn 7951, 7781, etc.
2903options 	HIFN_DEBUG	# enable debugging support: hw.hifn.debug
2904options 	HIFN_RNDTEST	# enable rndtest support
2905
2906device		ubsec		# Broadcom 5501, 5601, 58xx
2907options 	UBSEC_DEBUG	# enable debugging support: hw.ubsec.debug
2908options 	UBSEC_RNDTEST	# enable rndtest support
2909
2910#####################################################################
2911
2912
2913#
2914# Embedded system options:
2915#
2916# An embedded system might want to run something other than init.
2917options 	INIT_PATH=/sbin/init:/rescue/init
2918
2919# Debug options
2920options 	BUS_DEBUG	# enable newbus debugging
2921options 	DEBUG_VFS_LOCKS	# enable VFS lock debugging
2922options 	SOCKBUF_DEBUG	# enable sockbuf last record/mb tail checking
2923options 	IFMEDIA_DEBUG	# enable debugging in net/if_media.c
2924
2925#
2926# Verbose SYSINIT
2927#
2928# Make the SYSINIT process performed by mi_startup() verbose.  This is very
2929# useful when porting to a new architecture.  If DDB is also enabled, this
2930# will print function names instead of addresses.
2931options 	VERBOSE_SYSINIT
2932
2933#####################################################################
2934# SYSV IPC KERNEL PARAMETERS
2935#
2936# Maximum number of System V semaphores that can be used on the system at
2937# one time.
2938options 	SEMMNI=11
2939
2940# Total number of semaphores system wide
2941options 	SEMMNS=61
2942
2943# Total number of undo structures in system
2944options 	SEMMNU=31
2945
2946# Maximum number of System V semaphores that can be used by a single process
2947# at one time.
2948options 	SEMMSL=61
2949
2950# Maximum number of operations that can be outstanding on a single System V
2951# semaphore at one time.
2952options 	SEMOPM=101
2953
2954# Maximum number of undo operations that can be outstanding on a single
2955# System V semaphore at one time.
2956options 	SEMUME=11
2957
2958# Maximum number of shared memory pages system wide.
2959options 	SHMALL=1025
2960
2961# Maximum size, in bytes, of a single System V shared memory region.
2962options 	SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2963options 	SHMMAXPGS=1025
2964
2965# Minimum size, in bytes, of a single System V shared memory region.
2966options 	SHMMIN=2
2967
2968# Maximum number of shared memory regions that can be used on the system
2969# at one time.
2970options 	SHMMNI=33
2971
2972# Maximum number of System V shared memory regions that can be attached to
2973# a single process at one time.
2974options 	SHMSEG=9
2975
2976# Set the amount of time (in seconds) the system will wait before
2977# rebooting automatically when a kernel panic occurs.  If set to (-1),
2978# the system will wait indefinitely until a key is pressed on the
2979# console.
2980options 	PANIC_REBOOT_WAIT_TIME=16
2981
2982# Attempt to bypass the buffer cache and put data directly into the
2983# userland buffer for read operation when O_DIRECT flag is set on the
2984# file.  Both offset and length of the read operation must be
2985# multiples of the physical media sector size.
2986#
2987options 	DIRECTIO
2988
2989# Specify a lower limit for the number of swap I/O buffers.  They are
2990# (among other things) used when bypassing the buffer cache due to
2991# DIRECTIO kernel option enabled and O_DIRECT flag set on file.
2992#
2993options 	NSWBUF_MIN=120
2994
2995#####################################################################
2996
2997# More undocumented options for linting.
2998# Note that documenting these is not considered an affront.
2999
3000options 	CAM_DEBUG_DELAY
3001
3002# VFS cluster debugging.
3003options 	CLUSTERDEBUG
3004
3005options 	DEBUG
3006
3007# Kernel filelock debugging.
3008options 	LOCKF_DEBUG
3009
3010# System V compatible message queues
3011# Please note that the values provided here are used to test kernel
3012# building.  The defaults in the sources provide almost the same numbers.
3013# MSGSSZ must be a power of 2 between 8 and 1024.
3014options 	MSGMNB=2049	# Max number of chars in queue
3015options 	MSGMNI=41	# Max number of message queue identifiers
3016options 	MSGSEG=2049	# Max number of message segments
3017options 	MSGSSZ=16	# Size of a message segment
3018options 	MSGTQL=41	# Max number of messages in system
3019
3020options 	NBUF=512	# Number of buffer headers
3021
3022options 	SCSI_NCR_DEBUG
3023options 	SCSI_NCR_MAX_SYNC=10000
3024options 	SCSI_NCR_MAX_WIDE=1
3025options 	SCSI_NCR_MYADDR=7
3026
3027options 	SC_DEBUG_LEVEL=5	# Syscons debug level
3028options 	SC_RENDER_DEBUG	# syscons rendering debugging
3029
3030options 	VFS_BIO_DEBUG	# VFS buffer I/O debugging
3031
3032options 	KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
3033options 	KSTACK_USAGE_PROF
3034
3035# Adaptec Array Controller driver options
3036options 	AAC_DEBUG	# Debugging levels:
3037				# 0 - quiet, only emit warnings
3038				# 1 - noisy, emit major function
3039				#     points and things done
3040				# 2 - extremely noisy, emit trace
3041				#     items in loops, etc.
3042
3043# Resource Accounting
3044options 	RACCT
3045
3046# Resource Limits
3047options 	RCTL
3048
3049# Yet more undocumented options for linting.
3050# BKTR_ALLOC_PAGES has no effect except to cause warnings, and
3051# BROOKTREE_ALLOC_PAGES hasn't actually been superseded by it, since the
3052# driver still mostly spells this option BROOKTREE_ALLOC_PAGES.
3053##options 	BKTR_ALLOC_PAGES=(217*4+1)
3054options 	BROOKTREE_ALLOC_PAGES=(217*4+1)
3055options 	MAXFILES=999
3056
3057# Random number generator
3058# Only ONE of the below two may be used; they are mutually exclusive.
3059# If neither is present, then the Fortuna algorithm is selected.
3060#options 	RANDOM_YARROW	# Yarrow CSPRNG (old default)
3061#options 	RANDOM_LOADABLE	# Allow the algorithm to be loaded as
3062				# a module.
3063# Select this to allow high-rate but potentially expensive
3064# harvesting of Slab-Allocator entropy. In very high-rate
3065# situations the value of doing this is dubious at best.
3066options 	RANDOM_ENABLE_UMA	# slab allocator
3067
3068# Module to enable execution of application via emulators like QEMU
3069options         IMAGACT_BINMISC
3070
3071# Intel em(4) driver
3072options		EM_MULTIQUEUE # Activate multiqueue features/disable MSI-X
3073
3074# zlib I/O stream support
3075# This enables support for compressed core dumps.
3076options 	GZIO
3077
3078# BHND(4) drivers
3079options		BHND_LOGLEVEL	# Logging threshold level
3080