xref: /freebsd/sys/conf/NOTES (revision 03248b3f5079c490d949f4e8725a37624d707e14)
12365e64fSRodney W. Grimes#
219dde963SPeter Wemm# NOTES -- Lines that can be cut/pasted into kernel and hints configs.
3f71c01ccSPeter Wemm#
4f71c01ccSPeter Wemm# Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
51519d15cSJohn Baldwin# 'makeoptions', 'hints', etc. go into the kernel configuration that you
6f71c01ccSPeter Wemm# run config(8) with.
7f71c01ccSPeter Wemm#
8f9ba2bbeSWarner Losh# Lines that begin with 'envvar hint.' should go into your hints file.
9f9ba2bbeSWarner Losh# See /boot/device.hints and/or the 'hints' config(8) directive.
102365e64fSRodney W. Grimes#
115d4850e7SAlexander Langer# Please use ``make LINT'' to create an old-style LINT file if you want to
125d4850e7SAlexander Langer# do kernel test-builds.
135d4850e7SAlexander Langer#
14dd267672SJohn Baldwin# This file contains machine independent kernel configuration notes.  For
15dd267672SJohn Baldwin# machine dependent notes, look in /sys/<arch>/conf/NOTES.
16dd267672SJohn Baldwin#
171519d15cSJohn Baldwin
181519d15cSJohn Baldwin#
191519d15cSJohn Baldwin# NOTES conventions and style guide:
201519d15cSJohn Baldwin#
211519d15cSJohn Baldwin# Large block comments should begin and end with a line containing only a
221519d15cSJohn Baldwin# comment character.
231519d15cSJohn Baldwin#
241519d15cSJohn Baldwin# To describe a particular object, a block comment (if it exists) should
251519d15cSJohn Baldwin# come first.  Next should come device, options, and hints lines in that
261519d15cSJohn Baldwin# order.  All device and option lines must be described by a comment that
271519d15cSJohn Baldwin# doesn't just expand the device or option name.  Use only a concise
281519d15cSJohn Baldwin# comment on the same line if possible.  Very detailed descriptions of
291519d15cSJohn Baldwin# devices and subsystems belong in man pages.
301519d15cSJohn Baldwin#
31eb4f7a81SNate Lawson# A space followed by a tab separates 'options' from an option name.  Two
321519d15cSJohn Baldwin# spaces followed by a tab separate 'device' from a device name.  Comments
331519d15cSJohn Baldwin# after an option or device should use one space after the comment character.
341519d15cSJohn Baldwin# To comment out a negative option that disables code and thus should not be
35eb4f7a81SNate Lawson# enabled for LINT builds, precede 'options' with "#!".
362365e64fSRodney W. Grimes#
372365e64fSRodney W. Grimes
386a8d6623SGarrett Wollman#
396a8d6623SGarrett Wollman# This is the ``identification'' of the kernel.  Usually this should
406a8d6623SGarrett Wollman# be the same as the name of your kernel.
416a8d6623SGarrett Wollman#
426a8d6623SGarrett Wollmanident		LINT
436a8d6623SGarrett Wollman
446a8d6623SGarrett Wollman#
456a8d6623SGarrett Wollman# The `maxusers' parameter controls the static sizing of a number of
46ab0f83bdSRuslan Ermilov# internal system tables by a formula defined in subr_param.c.
47ab0f83bdSRuslan Ermilov# Omitting this parameter or setting it to 0 will cause the system to
48ab0f83bdSRuslan Ermilov# auto-size based on physical memory.
496a8d6623SGarrett Wollman#
506a8d6623SGarrett Wollmanmaxusers	10
516a8d6623SGarrett Wollman
5213c18821SJohn Baldwin# To statically compile in device wiring instead of /boot/device.hints
5313c18821SJohn Baldwin#hints		"LINT.hints"		# Default places to look for devices.
5413c18821SJohn Baldwin
5513c18821SJohn Baldwin# Use the following to compile in values accessible to the kernel
5613c18821SJohn Baldwin# through getenv() (or kenv(1) in userland). The format of the file
5713c18821SJohn Baldwin# is 'variable=value', see kenv(1)
5813c18821SJohn Baldwin#
5913c18821SJohn Baldwin#env		"LINT.env"
6013c18821SJohn Baldwin
616a8d6623SGarrett Wollman#
627bf01a14SPeter Wemm# The `makeoptions' parameter allows variables to be passed to the
63503e6666SBruce Evans# generated Makefile in the build area.
64503e6666SBruce Evans#
65503e6666SBruce Evans# CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
66503e6666SBruce Evans# after most other flags.  Here we use it to inhibit use of non-optimal
671c9c6382SRuslan Ermilov# gcc built-in functions (e.g., memcmp).
68503e6666SBruce Evans#
69503e6666SBruce Evans# DEBUG happens to be magic.
707bf01a14SPeter Wemm# The following is equivalent to 'config -g KERNELNAME' and creates
717bf01a14SPeter Wemm# 'kernel.debug' compiled with -g debugging as well as a normal
727bf01a14SPeter Wemm# 'kernel'.  Use 'make install.debug' to install the debug kernel
737bf01a14SPeter Wemm# but that isn't normally necessary as the debug symbols are not loaded
747bf01a14SPeter Wemm# by the kernel and are not useful there anyway.
757bf01a14SPeter Wemm#
762c8635c6SPeter Wemm# KERNEL can be overridden so that you can change the default name of your
772c8635c6SPeter Wemm# kernel.
782c8635c6SPeter Wemm#
790e3d06b1SWarner Losh# MODULES_OVERRIDE can be used to limit modules built to a specific list.
800e3d06b1SWarner Losh#
81503e6666SBruce Evansmakeoptions	CONF_CFLAGS=-fno-builtin  #Don't allow use of memcmp, etc.
825895e3c8SPeter Wemm#makeoptions	DEBUG=-g		#Build kernel with gdb(1) debug symbols
832c8635c6SPeter Wemm#makeoptions	KERNEL=foo		#Build kernel "foo" and install "/foo"
84f4eb4717SAlexander Leidinger# Only build ext2fs module plus those parts of the sound system I need.
85f4eb4717SAlexander Leidinger#makeoptions	MODULES_OVERRIDE="ext2fs sound/sound sound/driver/maestro3"
86fa75a3c2SPoul-Henning Kampmakeoptions	DESTDIR=/tmp
87fa75a3c2SPoul-Henning Kamp
883236b30eSGreg Lehey#
89480c6b8aSGreg Lehey# FreeBSD processes are subject to certain limits to their consumption
90480c6b8aSGreg Lehey# of system resources.  See getrlimit(2) for more details.  Each
91480c6b8aSGreg Lehey# resource limit has two values, a "soft" limit and a "hard" limit.
92480c6b8aSGreg Lehey# The soft limits can be modified during normal system operation, but
93480c6b8aSGreg Lehey# the hard limits are set at boot time.  Their default values are
94480c6b8aSGreg Lehey# in sys/<arch>/include/vmparam.h.  There are two ways to change them:
95480c6b8aSGreg Lehey#
96480c6b8aSGreg Lehey# 1.  Set the values at kernel build time.  The options below are one
97480c6b8aSGreg Lehey#     way to allow that limit to grow to 1GB.  They can be increased
98480c6b8aSGreg Lehey#     further by changing the parameters:
993236b30eSGreg Lehey#
100480c6b8aSGreg Lehey# 2.  In /boot/loader.conf, set the tunables kern.maxswzone,
101480c6b8aSGreg Lehey#     kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
102480c6b8aSGreg Lehey#     kern.dflssiz, kern.maxssiz and kern.sgrowsiz.
103a59d364aSMatthew Dillon#
104480c6b8aSGreg Lehey# The options in /boot/loader.conf override anything in the kernel
105480c6b8aSGreg Lehey# configuration file.  See the function init_param1 in
106480c6b8aSGreg Lehey# sys/kern/subr_param.c for more details.
1073236b30eSGreg Lehey#
108480c6b8aSGreg Lehey
1093236b30eSGreg Leheyoptions 	MAXDSIZ=(1024UL*1024*1024)
1103236b30eSGreg Leheyoptions 	MAXSSIZ=(128UL*1024*1024)
1113236b30eSGreg Leheyoptions 	DFLDSIZ=(1024UL*1024*1024)
1123236b30eSGreg Lehey
1133236b30eSGreg Lehey#
114a59d364aSMatthew Dillon# BLKDEV_IOSIZE sets the default block size used in user block
1153c7c6c12SMike Pritchard# device I/O.  Note that this value will be overridden by the label
116a59d364aSMatthew Dillon# when specifying a block device from a label with a non-0
1178b22cebbSMatthew Dillon# partition blocksize.  The default is PAGE_SIZE.
118a59d364aSMatthew Dillon#
119a59d364aSMatthew Dillonoptions 	BLKDEV_IOSIZE=8192
120a59d364aSMatthew Dillon
121f9fbd1a4SMatt Jacob#
122f9fbd1a4SMatt Jacob# MAXPHYS and DFLTPHYS
123f9fbd1a4SMatt Jacob#
12450a8df3cSAlexander Motin# These are the maximal and safe 'raw' I/O block device access sizes.
12550a8df3cSAlexander Motin# Reads and writes will be split into MAXPHYS chunks for known good
12650a8df3cSAlexander Motin# devices and DFLTPHYS for the rest. Some applications have better
12750a8df3cSAlexander Motin# performance with larger raw I/O access sizes. Note that certain VM
128f9fbd1a4SMatt Jacob# parameters are derived from these values and making them too large
129af52cb44SSergey Kandaurov# can make an unbootable kernel.
130f9fbd1a4SMatt Jacob#
131f9fbd1a4SMatt Jacob# The defaults are 64K and 128K respectively.
132f9fbd1a4SMatt Jacoboptions 	DFLTPHYS=(64*1024)
133f9fbd1a4SMatt Jacoboptions 	MAXPHYS=(128*1024)
134f9fbd1a4SMatt Jacob
135f9fbd1a4SMatt Jacob
136827d623eSJordan K. Hubbard# This allows you to actually store this configuration file into
137272afb65SWojciech A. Koszek# the kernel binary itself. See config(8) for more details.
138827d623eSJordan K. Hubbard#
139827d623eSJordan K. Hubbardoptions 	INCLUDE_CONFIG_FILE     # Include this file in kernel
140827d623eSJordan K. Hubbard
14156fddc5dSBrooks Davis#
14256fddc5dSBrooks Davis# Compile-time defaults for various boot parameters
14356fddc5dSBrooks Davis#
14456fddc5dSBrooks Davisoptions 	BOOTVERBOSE=1
14556fddc5dSBrooks Davisoptions 	BOOTHOWTO=RB_MULTIPLE
14656fddc5dSBrooks Davis
1472a4650ccSKyle Evans#
1482a4650ccSKyle Evans# Compile-time defaults for dmesg boot tagging
1492a4650ccSKyle Evans#
1502a4650ccSKyle Evans# Default boot tag; may use 'kern.boot_tag' loader tunable to override.  The
1512a4650ccSKyle Evans# current boot's tag is also exposed via the 'kern.boot_tag' sysctl.
15245916554SKyle Evansoptions 	BOOT_TAG=\"\"
153b34f7568SGordon Bergling# Maximum boot tag size the kernel's static buffer should accommodate.  Maximum
1542a4650ccSKyle Evans# size for both BOOT_TAG and the assocated tunable.
1552a4650ccSKyle Evansoptions 	BOOT_TAG_SZ=32
1562a4650ccSKyle Evans
1575d9f25dcSRuslan Ermilovoptions 	GEOM_CACHE		# Disk cache.
1587226443dSPawel Jakub Dawidekoptions 	GEOM_CONCAT		# Disk concatenation.
1595ca1fcfeSPawel Jakub Dawidekoptions 	GEOM_ELI		# Disk encryption.
1607226443dSPawel Jakub Dawidekoptions 	GEOM_GATE		# Userland services.
161f348204cSPawel Jakub Dawidekoptions 	GEOM_JOURNAL		# Journaling.
162e1237b28SPawel Jakub Dawidekoptions 	GEOM_LABEL		# Providers labelization.
1631669d8afSAndrew Thompsonoptions 	GEOM_LINUX_LVM		# Linux LVM2 volumes
164fcdb1ffcSAndrey V. Elsukovoptions 	GEOM_MAP		# Map based partitioning
1658a8fbacaSPawel Jakub Dawidekoptions 	GEOM_MIRROR		# Disk mirroring.
166e770bc6bSMatt Jacoboptions 	GEOM_MULTIPATH		# Disk multipath
1677dc92b13SPawel Jakub Dawidekoptions 	GEOM_NOP		# Test class.
1681d3aed33SMarcel Moolenaaroptions 	GEOM_PART_APM		# Apple partitioning
1695aaa8fefSMarcel Moolenaaroptions 	GEOM_PART_BSD		# BSD disklabel
170d68d0cf5SAndrey V. Elsukovoptions 	GEOM_PART_BSD64		# BSD disklabel64
17191e1be8bSMarcel Moolenaaroptions 	GEOM_PART_EBR		# Extended Boot Records
1721d3aed33SMarcel Moolenaaroptions 	GEOM_PART_GPT		# GPT partitioning
173e800e2e1SAndrey V. Elsukovoptions 	GEOM_PART_LDM		# Logical Disk Manager
1746bc50445SMarcel Moolenaaroptions 	GEOM_PART_MBR		# MBR partitioning
17589b17223SAlexander Motinoptions 	GEOM_RAID		# Soft RAID functionality.
176e81856c3SPawel Jakub Dawidekoptions 	GEOM_RAID3		# RAID3 functionality.
177560cb857SPawel Jakub Dawidekoptions 	GEOM_SHSEC		# Shared secret.
1787dc92b13SPawel Jakub Dawidekoptions 	GEOM_STRIPE		# Disk striping.
17975261008SMax Khonoptions 	GEOM_UZIP		# Read-only compressed disks
18002e17f0bSMarius Strobloptions 	GEOM_VINUM		# Vinum logical volume manager
181f854db0bSPawel Jakub Dawidekoptions 	GEOM_VIRSTOR		# Virtual storage.
1821c9c6382SRuslan Ermilovoptions 	GEOM_ZERO		# Performance testing helper.
1837b03a440SPoul-Henning Kamp
1848b140d57SMike Smith#
1858b140d57SMike Smith# The root device and filesystem type can be compiled in;
1868b140d57SMike Smith# this provides a fallback option if the root device cannot
1873b6c640cSCrist J. Clark# be correctly guessed by the bootstrap code, or an override if
1888b140d57SMike Smith# the RB_DFLTROOT flag (-r) is specified when booting the kernel.
1898b140d57SMike Smith#
1908b140d57SMike Smithoptions 	ROOTDEVNAME=\"ufs:da0s2e\"
1918b140d57SMike Smith
1926a8d6623SGarrett Wollman
1936a8d6623SGarrett Wollman#####################################################################
194f5d05ac3SJeff Roberson# Scheduler options:
195f5d05ac3SJeff Roberson#
196a61617edSGiorgos Keramidas# Specifying one of SCHED_4BSD or SCHED_ULE is mandatory.  These options
197f5d05ac3SJeff Roberson# select which scheduler is compiled in.
198f5d05ac3SJeff Roberson#
199f5d05ac3SJeff Roberson# SCHED_4BSD is the historical, proven, BSD scheduler.  It has a global run
2001c9c6382SRuslan Ermilov# queue and no CPU affinity which makes it suboptimal for SMP.  It has very
201f5d05ac3SJeff Roberson# good interactivity and priority selection.
202f5d05ac3SJeff Roberson#
203bd675f58SJeff Roberson# SCHED_ULE provides significant performance advantages over 4BSD on many
204bd675f58SJeff Roberson# workloads on SMP machines.  It supports cpu-affinity, per-cpu runqueues
205bd675f58SJeff Roberson# and scheduler locks.  It also has a stronger notion of interactivity
206bd675f58SJeff Roberson# which leads to better responsiveness even on uniprocessor machines.  This
2079c0ef6d5SOliver Fromme# is the default scheduler.
208f5d05ac3SJeff Roberson#
20975a66a92SJeff Roberson# SCHED_STATS is a debugging option which keeps some stats in the sysctl
21075a66a92SJeff Roberson# tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
21175a66a92SJeff Roberson#
212b998bd92SJeff Robersonoptions 	SCHED_4BSD
21375a66a92SJeff Robersonoptions 	SCHED_STATS
214b998bd92SJeff Roberson#options 	SCHED_ULE
215f5d05ac3SJeff Roberson
216f5d05ac3SJeff Roberson#####################################################################
217477a642cSPeter Wemm# SMP OPTIONS:
218477a642cSPeter Wemm#
219477a642cSPeter Wemm# SMP enables building of a Symmetric MultiProcessor Kernel.
220477a642cSPeter Wemm
221477a642cSPeter Wemm# Mandatory:
222477a642cSPeter Wemmoptions 	SMP			# Symmetric MultiProcessor Kernel
223477a642cSPeter Wemm
224fdce57a0SJohn Baldwin# EARLY_AP_STARTUP releases the Application Processors earlier in the
225fdce57a0SJohn Baldwin# kernel startup process (before devices are probed) rather than at the
226fdce57a0SJohn Baldwin# end.  This is a temporary option for use during the transition from
227fdce57a0SJohn Baldwin# late to early AP startup.
228fdce57a0SJohn Baldwinoptions 	EARLY_AP_STARTUP
229fdce57a0SJohn Baldwin
23068b739cdSAttilio Rao# MAXCPU defines the maximum number of CPUs that can boot in the system.
23168b739cdSAttilio Rao# A default value should be already present, for every architecture.
23268b739cdSAttilio Raooptions 	MAXCPU=32
23368b739cdSAttilio Rao
234b6715dabSJeff Roberson# NUMA enables use of Non-Uniform Memory Access policies in various kernel
235b6715dabSJeff Roberson# subsystems.
236b6715dabSJeff Robersonoptions 	NUMA
237b6715dabSJeff Roberson
238941646f5SAttilio Rao# MAXMEMDOM defines the maximum number of memory domains that can boot in the
239941646f5SAttilio Rao# system.  A default value should already be defined by every architecture.
24062d70a81SJohn Baldwinoptions 	MAXMEMDOM=2
24162d70a81SJohn Baldwin
2422498cf8cSJohn Baldwin# ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
2432498cf8cSJohn Baldwin# if the thread that currently owns the mutex is executing on another
244d51e8487SJosh Paetzel# CPU.  This behavior is enabled by default, so this option can be used
245701f1408SScott Long# to disable it.
246701f1408SScott Longoptions 	NO_ADAPTIVE_MUTEXES
2472498cf8cSJohn Baldwin
248cd6e6e4eSJohn Baldwin# ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
249cd6e6e4eSJohn Baldwin# if the thread that currently owns the rwlock is executing on another
250d51e8487SJosh Paetzel# CPU.  This behavior is enabled by default, so this option can be used
251cd6e6e4eSJohn Baldwin# to disable it.
252cd6e6e4eSJohn Baldwinoptions 	NO_ADAPTIVE_RWLOCKS
253cd6e6e4eSJohn Baldwin
2541ae1c2a3SAttilio Rao# ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
2551ae1c2a3SAttilio Rao# currently owns the sx lock is executing on another CPU.
256d51e8487SJosh Paetzel# This behavior is enabled by default, so this option can be used to
2571ae1c2a3SAttilio Rao# disable it.
2581ae1c2a3SAttilio Raooptions 	NO_ADAPTIVE_SX
2594e7f640dSJohn Baldwin
260ad27c4c7SJohn Baldwin# MUTEX_NOINLINE forces mutex operations to call functions to perform each
261ad27c4c7SJohn Baldwin# operation rather than inlining the simple cases.  This can be used to
262ad27c4c7SJohn Baldwin# shrink the size of the kernel text segment.  Note that this behavior is
263cf31ff26SRuslan Ermilov# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
264ad27c4c7SJohn Baldwin# and WITNESS options.
265ad27c4c7SJohn Baldwinoptions 	MUTEX_NOINLINE
266ad27c4c7SJohn Baldwin
2671a5d9b15SJohn Baldwin# RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
2681a5d9b15SJohn Baldwin# operation rather than inlining the simple cases.  This can be used to
2691a5d9b15SJohn Baldwin# shrink the size of the kernel text segment.  Note that this behavior is
270cf31ff26SRuslan Ermilov# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
2711a5d9b15SJohn Baldwin# and WITNESS options.
2721a5d9b15SJohn Baldwinoptions 	RWLOCK_NOINLINE
2731a5d9b15SJohn Baldwin
2744e7f640dSJohn Baldwin# SX_NOINLINE forces sx lock operations to call functions to perform each
2754e7f640dSJohn Baldwin# operation rather than inlining the simple cases.  This can be used to
2764e7f640dSJohn Baldwin# shrink the size of the kernel text segment.  Note that this behavior is
2774e7f640dSJohn Baldwin# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
2784e7f640dSJohn Baldwin# and WITNESS options.
2794e7f640dSJohn Baldwinoptions 	SX_NOINLINE
2804e7f640dSJohn Baldwin
2811fe4c660SJohn Baldwin# SMP Debugging Options:
2821fe4c660SJohn Baldwin#
2835b999a6bSDavide Italiano# CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
2845b999a6bSDavide Italiano#	  structure used as backend in callout(9).
2855e21b51bSDavid E. O'Brien# PREEMPTION allows the threads that are in the kernel to be preempted by
2865e21b51bSDavid E. O'Brien#	  higher priority [interrupt] threads.  It helps with interactivity
2875e21b51bSDavid E. O'Brien#	  and allows interrupt threads to run sooner rather than waiting.
2880c0b25aeSJohn Baldwin# FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
2898c5923d9SCeri Davies#	  threads.  Its sole use is to expose race conditions and other
2900c0b25aeSJohn Baldwin#	  bugs during development.  Enabling this option will reduce
2910c0b25aeSJohn Baldwin#	  performance and increase the frequency of kernel panics by
2920c0b25aeSJohn Baldwin#	  design.  If you aren't sure that you need it then you don't.
2939923b511SScott Long#	  Relies on the PREEMPTION option.  DON'T TURN THIS ON.
294ef0ebfc3SJohn Baldwin# SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
29575a66a92SJeff Roberson#	  used to hold active sleep queues as well as sleep wait message
29675a66a92SJeff Roberson#	  frequency.
297ef0ebfc3SJohn Baldwin# TURNSTILE_PROFILING enables rudimentary profiling of the hash table
298ef0ebfc3SJohn Baldwin#	  used to hold active lock queues.
299c6111de5SDavide Italiano# UMTX_PROFILING enables rudimentary profiling of the hash table used
30027c8e6b8SGlen Barber#	  to hold active lock queues.
301aa4019efSRobert Watson# WITNESS enables the witness code which detects deadlocks and cycles
3021fe4c660SJohn Baldwin#         during locking operations.
303e2ee2173SMarcel Moolenaar# WITNESS_KDB causes the witness code to drop into the kernel debugger if
3043c7c6c12SMike Pritchard#	  a lock hierarchy violation occurs or if locks are held when going to
305660d1e3aSJohn Baldwin#	  sleep.
306660d1e3aSJohn Baldwin# WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
3079923b511SScott Longoptions 	PREEMPTION
3080c0b25aeSJohn Baldwinoptions 	FULL_PREEMPTION
3091fe4c660SJohn Baldwinoptions 	WITNESS
310e2ee2173SMarcel Moolenaaroptions 	WITNESS_KDB
311660d1e3aSJohn Baldwinoptions 	WITNESS_SKIPSPIN
3121fe4c660SJohn Baldwin
313cf31ff26SRuslan Ermilov# LOCK_PROFILING - Profiling locks.  See LOCK_PROFILING(9) for details.
31407dba937SKip Macyoptions 	LOCK_PROFILING
31500096801SJohn-Mark Gurney# Set the number of buffers and the hash size.  The hash size MUST be larger
31600096801SJohn-Mark Gurney# than the number of buffers.  Hash size should be prime.
31700096801SJohn-Mark Gurneyoptions 	MPROF_BUFFERS="1536"
31800096801SJohn-Mark Gurneyoptions 	MPROF_HASH_SIZE="1543"
3194db0d7f1SDag-Erling Smørgrav
3205b999a6bSDavide Italiano# Profiling for the callout(9) backend.
3215b999a6bSDavide Italianooptions 	CALLOUT_PROFILING
3225b999a6bSDavide Italiano
323ef0ebfc3SJohn Baldwin# Profiling for internal hash tables.
324ef0ebfc3SJohn Baldwinoptions 	SLEEPQUEUE_PROFILING
325ef0ebfc3SJohn Baldwinoptions 	TURNSTILE_PROFILING
326c6111de5SDavide Italianooptions 	UMTX_PROFILING
327331805a5SDavide Italiano
328b9485d76SJohn Baldwin# Debugging traces for epoch(9) misuse
329b9485d76SJohn Baldwinoptions 	EPOCH_TRACE
330ef0ebfc3SJohn Baldwin
331477a642cSPeter Wemm#####################################################################
3326a8d6623SGarrett Wollman# COMPATIBILITY OPTIONS
333690f540cSAndrey A. Chernov
334d3e64681SPoul-Henning Kamp# Old tty interface.
335d3e64681SPoul-Henning Kampoptions 	COMPAT_43TTY
336d3e64681SPoul-Henning Kamp
337f5e4c105SJohn Baldwin# Note that as a general rule, COMPAT_FREEBSD<n> depends on
338f5e4c105SJohn Baldwin# COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
339f5e4c105SJohn Baldwin
340f0eb293eSAlfred Perlstein# Enable FreeBSD4 compatibility syscalls
341f0eb293eSAlfred Perlsteinoptions 	COMPAT_FREEBSD4
342f0eb293eSAlfred Perlstein
343a01b4125SKen Smith# Enable FreeBSD5 compatibility syscalls
344a01b4125SKen Smithoptions 	COMPAT_FREEBSD5
345a01b4125SKen Smith
3466c9fdda7SRuslan Ermilov# Enable FreeBSD6 compatibility syscalls
3476c9fdda7SRuslan Ermilovoptions 	COMPAT_FREEBSD6
3486c9fdda7SRuslan Ermilov
3495965c4b7SJohn Baldwin# Enable FreeBSD7 compatibility syscalls
3505965c4b7SJohn Baldwinoptions 	COMPAT_FREEBSD7
3515965c4b7SJohn Baldwin
3527d313e7bSJohn Baldwin# Enable FreeBSD9 compatibility syscalls
3537d313e7bSJohn Baldwinoptions 	COMPAT_FREEBSD9
3547d313e7bSJohn Baldwin
3557d313e7bSJohn Baldwin# Enable FreeBSD10 compatibility syscalls
3567d313e7bSJohn Baldwinoptions 	COMPAT_FREEBSD10
3577d313e7bSJohn Baldwin
3587f68a896SMark Johnston# Enable FreeBSD11 compatibility syscalls
3597f68a896SMark Johnstonoptions 	COMPAT_FREEBSD11
3607f68a896SMark Johnston
361d6745408SConrad Meyer# Enable FreeBSD12 compatibility syscalls
362d6745408SConrad Meyeroptions 	COMPAT_FREEBSD12
363d6745408SConrad Meyer
3644e85b648SKristof Provost# Enable FreeBSD13 compatibility syscalls
3654e85b648SKristof Provostoptions 	COMPAT_FREEBSD13
3664e85b648SKristof Provost
36784d12f88SKristof Provost# Enable FreeBSD14 compatibility syscalls
36884d12f88SKristof Provostoptions 	COMPAT_FREEBSD14
36984d12f88SKristof Provost
3708d59ecb2SHans Petter Selasky# Enable Linux Kernel Programming Interface
3718d59ecb2SHans Petter Selaskyoptions 	COMPAT_LINUXKPI
3728d59ecb2SHans Petter Selasky
3736a8d6623SGarrett Wollman#
3746a8d6623SGarrett Wollman# These three options provide support for System V Interface
3756a8d6623SGarrett Wollman# Definition-style interprocess communication, in the form of shared
3766a8d6623SGarrett Wollman# memory, semaphores, and message queues, respectively.
3776a8d6623SGarrett Wollman#
3786a8d6623SGarrett Wollmanoptions 	SYSVSHM
3796a8d6623SGarrett Wollmanoptions 	SYSVSEM
3806a8d6623SGarrett Wollmanoptions 	SYSVMSG
3816a8d6623SGarrett Wollman
3826a8d6623SGarrett Wollman
3836a8d6623SGarrett Wollman#####################################################################
3846a8d6623SGarrett Wollman# DEBUGGING OPTIONS
3856a8d6623SGarrett Wollman
3866a8d6623SGarrett Wollman#
387e2ee2173SMarcel Moolenaar# Compile with kernel debugger related code.
3886a8d6623SGarrett Wollman#
389e2ee2173SMarcel Moolenaaroptions 	KDB
390b5d89ca8SBruce Evans
391b5d89ca8SBruce Evans#
392e2ee2173SMarcel Moolenaar# Print a stack trace of the current thread on the console for a panic.
3937085e708SBruce Evans#
394e2ee2173SMarcel Moolenaaroptions 	KDB_TRACE
395e2ee2173SMarcel Moolenaar
396e2ee2173SMarcel Moolenaar#
397e2ee2173SMarcel Moolenaar# Don't enter the debugger for a panic. Intended for unattended operation
398e2ee2173SMarcel Moolenaar# where you may want to enter the debugger from the console, but still want
399e2ee2173SMarcel Moolenaar# the machine to recover from a panic.
400e2ee2173SMarcel Moolenaar#
401e2ee2173SMarcel Moolenaaroptions 	KDB_UNATTENDED
402e2ee2173SMarcel Moolenaar
403e2ee2173SMarcel Moolenaar#
404e2ee2173SMarcel Moolenaar# Enable the ddb debugger backend.
405e2ee2173SMarcel Moolenaar#
406e2ee2173SMarcel Moolenaaroptions 	DDB
4077085e708SBruce Evans
4087085e708SBruce Evans#
409bfdd261eSBruce Evans# Print the numerical value of symbols in addition to the symbolic
410bfdd261eSBruce Evans# representation.
411bfdd261eSBruce Evans#
412bfdd261eSBruce Evansoptions 	DDB_NUMSYM
413bfdd261eSBruce Evans
414bfdd261eSBruce Evans#
415e2ee2173SMarcel Moolenaar# Enable the remote gdb debugger backend.
4160be15decSJohn Baldwin#
417e2ee2173SMarcel Moolenaaroptions 	GDB
418562d05dfSPaul Traina
419562d05dfSPaul Traina#
42037bd4ba9SConrad Meyer# Trashes list pointers when they become invalid (i.e., the element is
42137bd4ba9SConrad Meyer# removed from a list).  Relatively inexpensive to enable.
42237bd4ba9SConrad Meyer#
42337bd4ba9SConrad Meyeroptions 	QUEUE_MACRO_DEBUG_TRASH
42437bd4ba9SConrad Meyer
42537bd4ba9SConrad Meyer#
42637bd4ba9SConrad Meyer# Stores information about the last caller to modify the list object
42737bd4ba9SConrad Meyer# in the list object.  Requires additional memory overhead.
42837bd4ba9SConrad Meyer#
4293fcdcab0SConrad Meyer#options 	QUEUE_MACRO_DEBUG_TRACE
43037bd4ba9SConrad Meyer
43137bd4ba9SConrad Meyer#
432df970488SRobert Watson# SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
433df970488SRobert Watson# contents of the registered sysctl nodes on the console.  It is disabled by
4341c9c6382SRuslan Ermilov# default because it generates excessively verbose console output that can
435df970488SRobert Watson# interfere with serial console operation.
436df970488SRobert Watson#
437df970488SRobert Watsonoptions 	SYSCTL_DEBUG
438df970488SRobert Watson
439df970488SRobert Watson#
44021d748a9SAlfred Perlstein# Enable textdump by default, this disables kernel core dumps.
44121d748a9SAlfred Perlstein#
44221d748a9SAlfred Perlsteinoptions 	TEXTDUMP_PREFERRED
44321d748a9SAlfred Perlstein
44421d748a9SAlfred Perlstein#
44521d748a9SAlfred Perlstein# Enable extra debug messages while performing textdumps.
44621d748a9SAlfred Perlstein#
44721d748a9SAlfred Perlsteinoptions 	TEXTDUMP_VERBOSE
44821d748a9SAlfred Perlstein
44921d748a9SAlfred Perlstein#
45031615ef7SRebecca Cran# NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
45131615ef7SRebecca Cran# resulting kernel.
45231615ef7SRebecca Cranoptions 	NO_SYSCTL_DESCR
45331615ef7SRebecca Cran
45431615ef7SRebecca Cran#
455d7854da1SMatthew D Fleming# MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
456d7854da1SMatthew D Fleming# allocations that are smaller than a page.  The purpose is to isolate
457d7854da1SMatthew D Fleming# different malloc types into hash classes, so that any buffer
458d7854da1SMatthew D Fleming# overruns or use-after-free will usually only affect memory from
459d7854da1SMatthew D Fleming# malloc types in that hash class.  This is purely a debugging tool;
460d7854da1SMatthew D Fleming# by varying the hash function and tracking which hash class was
461d7854da1SMatthew D Fleming# corrupted, the intersection of the hash classes from each instance
462d7854da1SMatthew D Fleming# will point to a single malloc type that is being misused.  At this
463d7854da1SMatthew D Fleming# point inspection or memguard(9) can be used to catch the offending
464d7854da1SMatthew D Fleming# code.
465d7854da1SMatthew D Fleming#
466d7854da1SMatthew D Flemingoptions 	MALLOC_DEBUG_MAXZONES=8
467d7854da1SMatthew D Fleming
468d7854da1SMatthew D Fleming#
469e4eb384bSBosko Milekic# DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
470e4eb384bSBosko Milekic# for the kernel used to detect modify-after-free scenarios.  See the
471e4eb384bSBosko Milekic# memguard(9) man page for more information on usage.
472e4eb384bSBosko Milekic#
473e4eb384bSBosko Milekicoptions 	DEBUG_MEMGUARD
474e4eb384bSBosko Milekic
475e4eb384bSBosko Milekic#
476847a2a17SPawel Jakub Dawidek# DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
477847a2a17SPawel Jakub Dawidek# malloc(9).
478847a2a17SPawel Jakub Dawidek#
479847a2a17SPawel Jakub Dawidekoptions 	DEBUG_REDZONE
480847a2a17SPawel Jakub Dawidek
481847a2a17SPawel Jakub Dawidek#
482e79f350dSWarner Losh# EARLY_PRINTF enables support for calling a special printf (eprintf)
483e79f350dSWarner Losh# very early in the kernel (before cn_init() has been called).  This
484e79f350dSWarner Losh# should only be used for debugging purposes early in boot.  Normally,
485e79f350dSWarner Losh# it is not defined.  It is commented out here because this feature
486e79f350dSWarner Losh# isn't generally available. And the required eputc() isn't defined.
487e79f350dSWarner Losh#
488e79f350dSWarner Losh#options 	EARLY_PRINTF
489e79f350dSWarner Losh
490e79f350dSWarner Losh#
491ea3fc8e4SJohn Baldwin# KTRACE enables the system-call tracing facility ktrace(2).  To be more
492ea3fc8e4SJohn Baldwin# SMP-friendly, KTRACE uses a worker thread to process most trace events
493ea3fc8e4SJohn Baldwin# asynchronously to the thread generating the event.  This requires a
494ea3fc8e4SJohn Baldwin# pre-allocated store of objects representing trace events.  The
495ea3fc8e4SJohn Baldwin# KTRACE_REQUEST_POOL option specifies the initial size of this store.
496ea3fc8e4SJohn Baldwin# The size of the pool can be adjusted both at boottime and runtime via
497ea3fc8e4SJohn Baldwin# the kern.ktrace_request_pool tunable and sysctl.
4986a8d6623SGarrett Wollman#
4992365e64fSRodney W. Grimesoptions 	KTRACE			#kernel tracing
500ea3fc8e4SJohn Baldwinoptions 	KTRACE_REQUEST_POOL=101
50121c64a07SAndrey A. Chernov
5026a8d6623SGarrett Wollman#
503f7e95633SRuslan Ermilov# KTR is a kernel tracing facility imported from BSD/OS.  It is
504a7bebf90SKris Kennaway# enabled with the KTR option.  KTR_ENTRIES defines the number of
5056e465ac7SDavide Italiano# entries in the circular trace buffer; it may be an arbitrary number.
50636b7dde4SAndriy Gapon# KTR_BOOT_ENTRIES defines the number of entries during the early boot,
50736b7dde4SAndriy Gapon# before malloc(9) is functional.
508a7bebf90SKris Kennaway# KTR_COMPILE defines the mask of events to compile into the kernel as
509a7bebf90SKris Kennaway# defined by the KTR_* constants in <sys/ktr.h>.  KTR_MASK defines the
510a7bebf90SKris Kennaway# initial value of the ktr_mask variable which determines at runtime
511a7bebf90SKris Kennaway# what events to trace.  KTR_CPUMASK determines which CPU's log
512e3709597SAttilio Rao# events, with bit X corresponding to CPU X.  The layout of the string
513d51e8487SJosh Paetzel# passed as KTR_CPUMASK must match a series of bitmasks each of them
514d4a2ab8cSAttilio Rao# separated by the "," character (ie:
515d4a2ab8cSAttilio Rao# KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF).  KTR_VERBOSE enables
516a7bebf90SKris Kennaway# dumping of KTR events to the console by default.  This functionality
517a7bebf90SKris Kennaway# can be toggled via the debug.ktr_verbose sysctl and defaults to off
518f7e95633SRuslan Ermilov# if KTR_VERBOSE is not defined.  See ktr(4) and ktrdump(8) for details.
519c508c1b6SJohn Baldwin#
520c508c1b6SJohn Baldwinoptions 	KTR
52136b7dde4SAndriy Gaponoptions 	KTR_BOOT_ENTRIES=1024
52236b7dde4SAndriy Gaponoptions 	KTR_ENTRIES=(128*1024)
5236740ed37SGleb Smirnoffoptions 	KTR_COMPILE=(KTR_ALL)
524a9672a81SJohn Baldwinoptions 	KTR_MASK=KTR_INTR
525d4a2ab8cSAttilio Raooptions 	KTR_CPUMASK=0x3
526d902baa4SJohn Baldwinoptions 	KTR_VERBOSE
527c508c1b6SJohn Baldwin
528c508c1b6SJohn Baldwin#
5291c9c6382SRuslan Ermilov# ALQ(9) is a facility for the asynchronous queuing of records from the kernel
530f7e95633SRuslan Ermilov# to a vnode, and is employed by services such as ktr(4) to produce trace
531453ffeefSRobert Watson# files based on a kernel event stream.  Records are written asynchronously
532453ffeefSRobert Watson# in a worker thread.
533453ffeefSRobert Watson#
534453ffeefSRobert Watsonoptions 	ALQ
535453ffeefSRobert Watsonoptions 	KTR_ALQ
536453ffeefSRobert Watson
537453ffeefSRobert Watson#
5385526d2d9SEivind Eklund# The INVARIANTS option is used in a number of source files to enable
5396a8d6623SGarrett Wollman# extra sanity checking of internal structures.  This support is not
5406a8d6623SGarrett Wollman# enabled by default because of the extra time it would take to check
5416a8d6623SGarrett Wollman# for these conditions, which can only occur as a result of
5426a8d6623SGarrett Wollman# programming errors.
5436a8d6623SGarrett Wollman#
5445526d2d9SEivind Eklundoptions 	INVARIANTS
5455526d2d9SEivind Eklund
5465526d2d9SEivind Eklund#
54734b15f2aSJohn Baldwin# The INVARIANT_SUPPORT option makes us compile in support for
54834b15f2aSJohn Baldwin# verifying some of the internal structures.  It is a prerequisite for
54934b15f2aSJohn Baldwin# 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
55034b15f2aSJohn Baldwin# called.  The intent is that you can set 'INVARIANTS' for single
55134b15f2aSJohn Baldwin# source files (by changing the source file or specifying it on the
55234b15f2aSJohn Baldwin# command line) if you have 'INVARIANT_SUPPORT' enabled.  Also, if you
55334b15f2aSJohn Baldwin# wish to build a kernel module with 'INVARIANTS', then adding
55434b15f2aSJohn Baldwin# 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
55534b15f2aSJohn Baldwin# infrastructure without the added overhead.
55634b15f2aSJohn Baldwin#
55734b15f2aSJohn Baldwinoptions 	INVARIANT_SUPPORT
55834b15f2aSJohn Baldwin
55934b15f2aSJohn Baldwin#
5604ca8c1efSConrad Meyer# The KASSERT_PANIC_OPTIONAL option allows kasserts to fire without
5614ca8c1efSConrad Meyer# necessarily inducing a panic.  Panic is the default behavior, but
5624ca8c1efSConrad Meyer# runtime options can configure it either entirely off, or off with a
5634ca8c1efSConrad Meyer# limit.
5644ca8c1efSConrad Meyer#
5654ca8c1efSConrad Meyeroptions 	KASSERT_PANIC_OPTIONAL
5664ca8c1efSConrad Meyer
5674ca8c1efSConrad Meyer#
5685526d2d9SEivind Eklund# The DIAGNOSTIC option is used to enable extra debugging information
56994851f37SMark Johnston# and invariants checking.  The added checks are too expensive or noisy
57094851f37SMark Johnston# for an INVARIANTS kernel and thus are disabled by default.  It is
57194851f37SMark Johnston# expected that a kernel configured with DIAGNOSTIC will also have the
57294851f37SMark Johnston# INVARIANTS option enabled.
5735526d2d9SEivind Eklund#
5740dc7d907SPoul-Henning Kampoptions 	DIAGNOSTIC
575da59a31cSDavid Greenman
5760dd1eea1SJordan K. Hubbard#
5770b5438c6SRobert Watson# REGRESSION causes optional kernel interfaces necessary only for regression
5783c7c6c12SMike Pritchard# testing to be enabled.  These interfaces may constitute security risks
5790b5438c6SRobert Watson# when enabled, as they permit processes to easily modify aspects of the
5800b5438c6SRobert Watson# run-time environment to reproduce unlikely or unusual (possibly normally
5810b5438c6SRobert Watson# impossible) scenarios.
5820b5438c6SRobert Watson#
5830b5438c6SRobert Watsonoptions 	REGRESSION
5840b5438c6SRobert Watson
5850b5438c6SRobert Watson#
5869c0ef6d5SOliver Fromme# This option lets some drivers co-exist that can't co-exist in a running
587346ebe51SEivind Eklund# system.  This is used to be able to compile all kernel code in one go for
588346ebe51SEivind Eklund# quality assurance purposes (like this file, which the option takes it name
589346ebe51SEivind Eklund# from.)
590346ebe51SEivind Eklund#
591346ebe51SEivind Eklundoptions 	COMPILING_LINT
592346ebe51SEivind Eklund
5933c90d1eaSRobert Watson#
5943c90d1eaSRobert Watson# STACK enables the stack(9) facility, allowing the capture of kernel stack
5953c90d1eaSRobert Watson# for the purpose of procinfo(1), etc.  stack(9) will also be compiled in
5963c90d1eaSRobert Watson# automatically if DDB(4) is compiled into the kernel.
5973c90d1eaSRobert Watson#
5983c90d1eaSRobert Watsonoptions 	STACK
5993c90d1eaSRobert Watson
600cc37baeaSStephen J. Kiernan#
601cc37baeaSStephen J. Kiernan# The NUM_CORE_FILES option specifies the limit for the number of core
602cc37baeaSStephen J. Kiernan# files generated by a particular process, when the core file format
603cc37baeaSStephen J. Kiernan# specifier includes the %I pattern. Since we only have 1 character for
604cc37baeaSStephen J. Kiernan# the core count in the format string, meaning the range will be 0-9, the
605cc37baeaSStephen J. Kiernan# maximum value allowed for this option is 10.
606cc37baeaSStephen J. Kiernan# This core file limit can be adjusted at runtime via the debug.ncores
607cc37baeaSStephen J. Kiernan# sysctl.
608cc37baeaSStephen J. Kiernan#
609cc37baeaSStephen J. Kiernanoptions 	NUM_CORE_FILES=5
610cc37baeaSStephen J. Kiernan
611ae3d6bfaSColin Percival#
612ae3d6bfaSColin Percival# The TSLOG option enables timestamped logging of events, especially
613ae3d6bfaSColin Percival# function entries/exits, in order to track the time spent by the kernel.
614ae3d6bfaSColin Percival# In particular, this is useful when investigating the early boot process,
615ae3d6bfaSColin Percival# before it is possible to use more sophisticated tools like DTrace.
616ae3d6bfaSColin Percival# The TSLOGSIZE option controls the size of the (preallocated, fixed
617ae3d6bfaSColin Percival# length) buffer used for storing these events (default: 262144 records).
6182404380aSColin Percival# The TSLOG_PAGEZERO option enables TSLOG of pmap_zero_page; this must be
6192404380aSColin Percival# enabled separately since it typically generates too many records to be
6202404380aSColin Percival# useful.
621ae3d6bfaSColin Percival#
622ae3d6bfaSColin Percival# For security reasons the TSLOG option should not be enabled on systems
623ae3d6bfaSColin Percival# used in production.
624ae3d6bfaSColin Percival#
625ae3d6bfaSColin Percivaloptions 	TSLOG
626ae3d6bfaSColin Percivaloptions 	TSLOGSIZE=262144
627ae3d6bfaSColin Percival
6286a8d6623SGarrett Wollman
6296a8d6623SGarrett Wollman#####################################################################
630d47cce3eSMarcel Moolenaar# PERFORMANCE MONITORING OPTIONS
631d47cce3eSMarcel Moolenaar
632d47cce3eSMarcel Moolenaar#
633d47cce3eSMarcel Moolenaar# The hwpmc driver that allows the use of in-CPU performance monitoring
6349c0ef6d5SOliver Fromme# counters for performance monitoring.  The base kernel needs to be configured
635d47cce3eSMarcel Moolenaar# with the 'options' line, while the hwpmc device can be either compiled
636d47cce3eSMarcel Moolenaar# in or loaded as a loadable kernel module.
637d47cce3eSMarcel Moolenaar#
638ad3869b4SJoseph Koshy# Additional configuration options may be required on specific architectures,
639ad3869b4SJoseph Koshy# please see hwpmc(4).
640ad3869b4SJoseph Koshy
641d47cce3eSMarcel Moolenaardevice		hwpmc			# Driver (also a loadable module)
642680f1afdSJohn Baldwinoptions 	HWPMC_DEBUG
643d47cce3eSMarcel Moolenaaroptions 	HWPMC_HOOKS		# Other necessary kernel hooks
644d47cce3eSMarcel Moolenaar
645d47cce3eSMarcel Moolenaar
646d47cce3eSMarcel Moolenaar#####################################################################
6476a8d6623SGarrett Wollman# NETWORKING OPTIONS
64870c0b54cSAndrey A. Chernov
6496a8d6623SGarrett Wollman#
650a22fb0daSGeorge V. Neville-Neil# Protocol families
6516a8d6623SGarrett Wollman#
6526a8d6623SGarrett Wollmanoptions 	INET			#Internet communications protocols
65351f4c152SYoshinobu Inoueoptions 	INET6			#IPv6 communications protocols
654b8d60729SRandall Stewart#
655b8d60729SRandall Stewart# Note if you include INET/INET6 or both options
656b8d60729SRandall Stewart# You *must* define at least one of the congestion control
657bb1d472dSRichard Scheffenegger# options or the compile will fail. GENERIC defines
658bb1d472dSRichard Scheffenegger# options CC_CUBIC. You may want to specify a default
659bb1d472dSRichard Scheffenegger# if multiple congestion controls are compiled in.
660bb1d472dSRichard Scheffenegger# The string in default is the name of the
661b8d60729SRandall Stewart# cc module as it would appear in the sysctl for
662bb1d472dSRichard Scheffenegger# setting the default. The code defines CUBIC
663bb1d472dSRichard Scheffenegger# as default, or the sole cc_module compiled in.
664b8d60729SRandall Stewart#
665b8d60729SRandall Stewartoptions 	CC_CDG
666b8d60729SRandall Stewartoptions 	CC_CHD
667b8d60729SRandall Stewartoptions 	CC_CUBIC
668b8d60729SRandall Stewartoptions 	CC_DCTCP
669b8d60729SRandall Stewartoptions 	CC_HD
670b8d60729SRandall Stewartoptions 	CC_HTCP
671b8d60729SRandall Stewartoptions 	CC_NEWRENO
672b8d60729SRandall Stewartoptions 	CC_VEGAS
673bb1d472dSRichard Scheffeneggeroptions 	CC_DEFAULT=\"cubic\"
674f3e7afe2SHans Petter Selaskyoptions 	RATELIMIT		# TX rate limiting support
675f3e7afe2SHans Petter Selasky
6764871fc4aSJulian Elischeroptions 	ROUTETABLES=2		# allocated fibs up to 65536. default is 1.
6774871fc4aSJulian Elischer					# but that would be a bad idea as they are large.
6788b07e49aSJulian Elischer
67909fe6320SNavdeep Parharoptions 	TCP_OFFLOAD		# TCP offload support.
680cca72379SWarner Loshoptions  	TCP_RFC7413		# TCP Fast Open
68109fe6320SNavdeep Parhar
68246033610SMatt Macyoptions  	TCPHPTS
68346033610SMatt Macy
684a22fb0daSGeorge V. Neville-Neil# In order to enable IPSEC you MUST also add device crypto to
685a22fb0daSGeorge V. Neville-Neil# your kernel configuration
686a22fb0daSGeorge V. Neville-Neiloptions 	IPSEC			#IP security (requires device crypto)
687fcf59617SAndrey V. Elsukov
688fcf59617SAndrey V. Elsukov# Option IPSEC_SUPPORT does not enable IPsec, but makes it possible to
689fcf59617SAndrey V. Elsukov# load it as a kernel module. You still MUST add device crypto to your kernel
690fcf59617SAndrey V. Elsukov# configuration.
691fcf59617SAndrey V. Elsukovoptions 	IPSEC_SUPPORT
6922cb64cb2SGeorge V. Neville-Neil#options 	IPSEC_DEBUG		#debug for IP security
693f73bbaf2SDavid Greenman
6943a338c53SDag-Erling Smørgrav# Alternative TCP stacks
6953a338c53SDag-Erling Smørgravoptions 	TCP_BBR
6963a338c53SDag-Erling Smørgravoptions 	TCP_RACK
697b2e60773SJohn Baldwin
698efa9c21bSAndrew Gallatin# TLS framing and encryption/decryption of data over TCP sockets.
699efa9c21bSAndrew Gallatinoptions 	KERN_TLS		# TLS transmit and receive offload
700b2e60773SJohn Baldwin
701c9313a0bSAlexander V. Chernikov# Netlink kernel/user<>kernel/user messaging interface
702c9313a0bSAlexander V. Chernikovoptions 	NETLINK
703c9313a0bSAlexander V. Chernikov
704237abf0cSDavide Italiano#
705237abf0cSDavide Italiano# SMB/CIFS requester
706237abf0cSDavide Italiano# NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
707237abf0cSDavide Italiano# options.
708237abf0cSDavide Italianooptions 	NETSMB			#SMB/CIFS requester
709237abf0cSDavide Italiano
710d8589bd5SBoris Popov# mchain library. It can be either loaded as KLD or compiled into kernel
711d8589bd5SBoris Popovoptions 	LIBMCHAIN
712d8589bd5SBoris Popov
7136cd047a0SGleb Smirnoff# libalias library, performing NAT
7146cd047a0SGleb Smirnoffoptions 	LIBALIAS
7156cd047a0SGleb Smirnoff
716f8829a4aSRandall Stewart#
717f8829a4aSRandall Stewart# SCTP is a NEW transport protocol defined by
718f8829a4aSRandall Stewart# RFC2960 updated by RFC3309 and RFC3758.. and
719f8829a4aSRandall Stewart# soon to have a new base RFC and many many more
720f8829a4aSRandall Stewart# extensions. This release supports all the extensions
721f8829a4aSRandall Stewart# including many drafts (most about to become RFC's).
7229c0ef6d5SOliver Fromme# It is the reference implementation of SCTP
723f8829a4aSRandall Stewart# and is quite well tested.
724f8829a4aSRandall Stewart#
725f8829a4aSRandall Stewart# Note YOU MUST have both INET and INET6 defined.
7269c0ef6d5SOliver Fromme# You don't have to enable V6, but SCTP is
7279c0ef6d5SOliver Fromme# dual stacked and so far we have not torn apart
728f8829a4aSRandall Stewart# the V6 and V4.. since an association can span
729f8829a4aSRandall Stewart# both a V6 and V4 address at the SAME time :-)
730f8829a4aSRandall Stewart#
73195033af9SMark Johnston# The SCTP_SUPPORT option does not enable SCTP, but provides the necessary
73295033af9SMark Johnston# support for loading SCTP as a loadable kernel module.
73395033af9SMark Johnston#
734f8829a4aSRandall Stewartoptions 	SCTP
73595033af9SMark Johnstonoptions 	SCTP_SUPPORT
73695033af9SMark Johnston
737f8829a4aSRandall Stewart# There are bunches of options:
738f8829a4aSRandall Stewart# this one turns on all sorts of
739d51e8487SJosh Paetzel# nastily printing that you can
7409c0ef6d5SOliver Fromme# do. It's all controlled by a
741f8829a4aSRandall Stewart# bit mask (settable by socket opt and
742f8829a4aSRandall Stewart# by sysctl). Including will not cause
743f8829a4aSRandall Stewart# logging until you set the bits.. but it
744f8829a4aSRandall Stewart# can be quite verbose.. so without this
745f8829a4aSRandall Stewart# option we don't do any of the tests for
746f8829a4aSRandall Stewart# bits and prints.. which makes the code run
747f8829a4aSRandall Stewart# faster.. if you are not debugging don't use.
748f8829a4aSRandall Stewartoptions 	SCTP_DEBUG
74995033af9SMark Johnston
750f8829a4aSRandall Stewart#
751f8829a4aSRandall Stewart# All that options after that turn on specific types of
752f8829a4aSRandall Stewart# logging. You can monitor CWND growth, flight size
753f8829a4aSRandall Stewart# and all sorts of things. Go look at the code and
754f8829a4aSRandall Stewart# see. I have used this to produce interesting
755f8829a4aSRandall Stewart# charts and graphs as well :->
756f8829a4aSRandall Stewart#
7579c0ef6d5SOliver Fromme# I have not yet committed the tools to get and print
758f8829a4aSRandall Stewart# the logs, I will do that eventually .. before then
759f8829a4aSRandall Stewart# if you want them send me an email rrs@freebsd.org
760f7e95633SRuslan Ermilov# You basically must have ktr(4) enabled for these
761cb7a4976SRandall Stewart# and you then set the sysctl to turn on/off various
762f7e95633SRuslan Ermilov# logging bits. Use ktrdump(8) to pull the log and run
7639c0ef6d5SOliver Fromme# it through a display program.. and graphs and other
764cb7a4976SRandall Stewart# things too.
765f8829a4aSRandall Stewart#
766f8829a4aSRandall Stewartoptions 	SCTP_LOCK_LOGGING
767f8829a4aSRandall Stewartoptions 	SCTP_MBUF_LOGGING
768cb7a4976SRandall Stewartoptions 	SCTP_MBCNT_LOGGING
769cb7a4976SRandall Stewartoptions 	SCTP_PACKET_LOGGING
770cb7a4976SRandall Stewartoptions 	SCTP_LTRACE_CHUNKS
771cb7a4976SRandall Stewartoptions 	SCTP_LTRACE_ERRORS
772cb7a4976SRandall Stewart
773973d3a82SJohn Baldwin# OpenFabrics Enterprise Distribution (Infiniband).
774973d3a82SJohn Baldwinoptions 	OFED
775973d3a82SJohn Baldwinoptions 	OFED_DEBUG_INIT
776973d3a82SJohn Baldwin
777973d3a82SJohn Baldwin# Sockets Direct Protocol
778973d3a82SJohn Baldwinoptions 	SDP
779973d3a82SJohn Baldwinoptions 	SDP_DEBUG
780973d3a82SJohn Baldwin
781973d3a82SJohn Baldwin# IP over Infiniband
782973d3a82SJohn Baldwinoptions 	IPOIB
783973d3a82SJohn Baldwinoptions 	IPOIB_DEBUG
784973d3a82SJohn Baldwinoptions 	IPOIB_CM
785973d3a82SJohn Baldwin
78602b199f1SMax Laier# altq(9). Enable the base part of the hooks with the ALTQ option.
78702b199f1SMax Laier# Individual disciplines must be built into the base system and can not be
788cceffdeeSAndrew Thompson# loaded as modules at this point. ALTQ requires a stable TSC so if yours is
789cceffdeeSAndrew Thompson# broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
790cceffdeeSAndrew Thompson# option.
79102b199f1SMax Laieroptions 	ALTQ
792755911cdSGreg Leheyoptions 	ALTQ_CBQ	# Class Based Queueing
793c7219167SMax Laieroptions 	ALTQ_RED	# Random Early Detection
79402b199f1SMax Laieroptions 	ALTQ_RIO	# RED In/Out
795a13bfb09SLuiz Otavio O Souzaoptions 	ALTQ_CODEL	# CoDel Active Queueing
79602b199f1SMax Laieroptions 	ALTQ_HFSC	# Hierarchical Packet Scheduler
797a5b789f6SErmal Luçioptions 	ALTQ_FAIRQ	# Fair Packet Scheduler
79802b199f1SMax Laieroptions 	ALTQ_CDNR	# Traffic conditioner
7993c7c6c12SMike Pritchardoptions 	ALTQ_PRIQ	# Priority Queueing
800cceffdeeSAndrew Thompsonoptions 	ALTQ_NOPCC	# Required if the TSC is unusable
80102b199f1SMax Laieroptions 	ALTQ_DEBUG
80202b199f1SMax Laier
8034cf49a43SJulian Elischer# netgraph(4). Enable the base netgraph code with the NETGRAPH option.
8044cf49a43SJulian Elischer# Individual node types can be enabled with the corresponding option
8054cf49a43SJulian Elischer# listed below; however, this is not strictly necessary as netgraph
8064cf49a43SJulian Elischer# will automatically load the corresponding KLD module if the node type
80792a3e552SArchie Cobbs# is not already compiled into the kernel. Each type below has a
80892a3e552SArchie Cobbs# corresponding man page, e.g., ng_async(8).
8094cf49a43SJulian Elischeroptions 	NETGRAPH		# netgraph(4) system
81073e87266SGleb Smirnoffoptions 	NETGRAPH_DEBUG		# enable extra debugging, this
81173e87266SGleb Smirnoff					# affects netgraph(4) and nodes
81273e87266SGleb Smirnoff# Node types
8134cf49a43SJulian Elischeroptions 	NETGRAPH_ASYNC
814b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH		# ng_bluetooth(4)
815b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH_HCI		# ng_hci(4)
816b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH_L2CAP	# ng_l2cap(4)
817b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH_SOCKET	# ng_btsocket(4)
818b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH_UBT		# ng_ubt(4)
819b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH_UBTBCMFW	# ubtbcmfw(4)
82092a3e552SArchie Cobbsoptions 	NETGRAPH_BPF
821901fadf7SArchie Cobbsoptions 	NETGRAPH_BRIDGE
8227d3b4a08SAlexander Motinoptions 	NETGRAPH_CAR
823b9e0c8c2SMaxim Sobolevoptions 	NETGRAPH_CHECKSUM
8244cf49a43SJulian Elischeroptions 	NETGRAPH_CISCO
8259e6f1d3bSGleb Smirnoffoptions 	NETGRAPH_DEFLATE
82631578ac8SGleb Smirnoffoptions 	NETGRAPH_DEVICE
8274cf49a43SJulian Elischeroptions 	NETGRAPH_ECHO
8289d564133SRobert Watsonoptions 	NETGRAPH_EIFACE
82946aa8b9bSArchie Cobbsoptions 	NETGRAPH_ETHER
8304cf49a43SJulian Elischeroptions 	NETGRAPH_FRAME_RELAY
83137379158SBrooks Davisoptions 	NETGRAPH_GIF
83237379158SBrooks Davisoptions 	NETGRAPH_GIF_DEMUX
8334cf49a43SJulian Elischeroptions 	NETGRAPH_HOLE
8344cf49a43SJulian Elischeroptions 	NETGRAPH_IFACE
83537379158SBrooks Davisoptions 	NETGRAPH_IP_INPUT
836f2a7ef4eSGleb Smirnoffoptions 	NETGRAPH_IPFW
83748e94174SArchie Cobbsoptions 	NETGRAPH_KSOCKET
838901fadf7SArchie Cobbsoptions 	NETGRAPH_L2TP
8394cf49a43SJulian Elischeroptions 	NETGRAPH_LMI
840ec5753e0SPedro F. Giffunioptions 	NETGRAPH_MPPC_COMPRESSION
841a2b408adSArchie Cobbsoptions 	NETGRAPH_MPPC_ENCRYPTION
842cec50deaSGleb Smirnoffoptions 	NETGRAPH_NETFLOW
8436cd047a0SGleb Smirnoffoptions 	NETGRAPH_NAT
8447d7a5b89SArchie Cobbsoptions 	NETGRAPH_ONE2MANY
845d05181f9SAndrey V. Elsukovoptions 	NETGRAPH_PATCH
846991633afSMarko Zecoptions 	NETGRAPH_PIPE
847b0801bacSArchie Cobbsoptions 	NETGRAPH_PPP
848b0801bacSArchie Cobbsoptions 	NETGRAPH_PPPOE
849add85a1dSArchie Cobbsoptions 	NETGRAPH_PPTPGRE
8509e6f1d3bSGleb Smirnoffoptions 	NETGRAPH_PRED1
8514cf49a43SJulian Elischeroptions 	NETGRAPH_RFC1490
852b0801bacSArchie Cobbsoptions 	NETGRAPH_SOCKET
8534d60fee2SBrooks Davisoptions 	NETGRAPH_SPLIT
854d473c9d5SGleb Smirnoffoptions 	NETGRAPH_TAG
855e9110049SGleb Smirnoffoptions 	NETGRAPH_TCPMSS
8564cf49a43SJulian Elischeroptions 	NETGRAPH_TEE
8574cf49a43SJulian Elischeroptions 	NETGRAPH_UI
858b58a8a3bSJulian Elischeroptions 	NETGRAPH_VJC
859b4263060SRuslan Ermilovoptions 	NETGRAPH_VLAN
860666ea1b6SMaksim Yevmenkin
8610990ef0aSKevin Lo# Network stack virtualization.
8628e94025bSBjoern A. Zeeboptions 	VIMAGE
8638e94025bSBjoern A. Zeeboptions 	VNET_DEBUG	# debug for VIMAGE
8640990ef0aSKevin Lo
8656a8d6623SGarrett Wollman#
8666a8d6623SGarrett Wollman# Network interfaces:
867f71c01ccSPeter Wemm#  The `loop' device is MANDATORY when networking is enabled.
86836782d14SWojciech A. Koszekdevice		loop
86936782d14SWojciech A. Koszek
870f71c01ccSPeter Wemm#  The `ether' device provides generic code to handle
8719d5abbddSJens Schweikhardt#  Ethernets; it is MANDATORY when an Ethernet device driver is
87269f0fecbSBrooks Davis#  configured.
87336782d14SWojciech A. Koszekdevice		ether
87436782d14SWojciech A. Koszek
875fc67901fSYaroslav Tykhiy#  The `vlan' device implements the VLAN tagging of Ethernet frames
8769d9ab10eSAntoine Brodin#  according to IEEE 802.1Q.
87736782d14SWojciech A. Koszekdevice		vlan
87836782d14SWojciech A. Koszek
879007054f0SBryan Venteicher# The `vxlan' device implements the VXLAN encapsulation of Ethernet
880007054f0SBryan Venteicher# frames in UDP packets according to RFC7348.
881007054f0SBryan Venteicherdevice		vxlan
882007054f0SBryan Venteicher
88357a42501SGarrett Wollman#  The `wlan' device provides generic code to support 802.11
88467e4db77SSam Leffler#  drivers, including host AP mode; it is MANDATORY for the wi,
885f4463607SSam Leffler#  and ath drivers and will eventually be required by all 802.11 drivers.
88636782d14SWojciech A. Koszekdevice		wlan
88736782d14SWojciech A. Koszekoptions 	IEEE80211_DEBUG		#enable debugging msgs
8889c3fd2c1SJohn Baldwinoptions 	IEEE80211_DEBUG_REFCNT
88959aa14a9SRui Paulooptions 	IEEE80211_SUPPORT_MESH	#enable 802.11s D3.0 support
89059aa14a9SRui Paulooptions 	IEEE80211_SUPPORT_TDMA	#enable TDMA support
89136782d14SWojciech A. Koszek
89267e4db77SSam Leffler#  The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
89367e4db77SSam Leffler#  support for WEP, TKIP, and AES-CCMP crypto protocols optionally
89467e4db77SSam Leffler#  used with 802.11 devices that depend on the `wlan' module.
89536782d14SWojciech A. Koszekdevice		wlan_wep
89636782d14SWojciech A. Koszekdevice		wlan_ccmp
89736782d14SWojciech A. Koszekdevice		wlan_tkip
89836782d14SWojciech A. Koszek
89967e4db77SSam Leffler#  The `wlan_xauth' device provides support for external (i.e. user-mode)
90067e4db77SSam Leffler#  authenticators for use with 802.11 drivers that use the `wlan'
90134341a71SJohn Baldwin#  module and support 802.1x and/or WPA security protocols.
90236782d14SWojciech A. Koszekdevice		wlan_xauth
90336782d14SWojciech A. Koszek
90467e4db77SSam Leffler#  The `wlan_acl' device provides a MAC-based access control mechanism
90567e4db77SSam Leffler#  for use with 802.11 drivers operating in ap mode and using the
90667e4db77SSam Leffler#  `wlan' module.
90736782d14SWojciech A. Koszek#  The 'wlan_amrr' device provides AMRR transmit rate control algorithm
90836782d14SWojciech A. Koszekdevice		wlan_acl
90936782d14SWojciech A. Koszekdevice		wlan_amrr
91036782d14SWojciech A. Koszek
911f71c01ccSPeter Wemm#  The `bpf' device enables the Berkeley Packet Filter.  Be
912d29895dcSGarrett Wollman#  aware of the legal and administrative consequences of enabling this
9139c0ef6d5SOliver Fromme#  option.  DHCP requires bpf.
91436782d14SWojciech A. Koszekdevice		bpf
91536782d14SWojciech A. Koszek
916e4b68814SLuigi Rizzo#  The `netmap' device implements memory-mapped access to network
917e4b68814SLuigi Rizzo#  devices from userspace, enabling wire-speed packet capture and
918e4b68814SLuigi Rizzo#  generation even at 10Gbit/s. Requires support in the device
919e4b68814SLuigi Rizzo#  driver. Supported drivers are ixgbe, e1000, re.
920e4b68814SLuigi Rizzodevice		netmap
921e4b68814SLuigi Rizzo
922f71c01ccSPeter Wemm#  The `disc' device implements a minimal network interface,
92359d8d13fSGarrett Wollman#  which throws away all packets sent and never receives any.  It is
92470e04181SYaroslav Tykhiy#  included for testing and benchmarking purposes.
92536782d14SWojciech A. Koszekdevice		disc
92636782d14SWojciech A. Koszek
927d0ea4743SBjoern A. Zeeb# The `epair' device implements a virtual back-to-back connected Ethernet
928d0ea4743SBjoern A. Zeeb# like interface pair.
929d0ea4743SBjoern A. Zeebdevice		epair
930d0ea4743SBjoern A. Zeeb
93163518eccSYaroslav Tykhiy#  The `edsc' device implements a minimal Ethernet interface,
93263518eccSYaroslav Tykhiy#  which discards all packets sent and receives none.
93336782d14SWojciech A. Koszekdevice		edsc
93436782d14SWojciech A. Koszek
935251a32b5SKyle Evans#  The `tuntap' device implements (user-)ppp, nos-tun(8) and a pty-like virtual
936251a32b5SKyle Evans#  Ethernet interface
937251a32b5SKyle Evansdevice		tuntap
93836782d14SWojciech A. Koszek
939f71c01ccSPeter Wemm#  The `gif' device implements IPv6 over IP4 tunneling,
940cfa1ca9dSYoshinobu Inoue#  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
941cfa1ca9dSYoshinobu Inoue#  IPv6 over IPv6 tunneling.
942f325335cSAndrey V. Elsukov#  The `gre' device implements GRE (Generic Routing Encapsulation) tunneling,
943f325335cSAndrey V. Elsukov#  as specified in the RFC 2784 and RFC 2890.
944f325335cSAndrey V. Elsukov#  The `me' device implements Minimal Encapsulation within IPv4 as
945f325335cSAndrey V. Elsukov#  specified in the RFC 2004.
946f57fc21cSJeroen Ruigrok van der Werven#  The XBONEHACK option allows the same pair of addresses to be configured on
947f57fc21cSJeroen Ruigrok van der Werven#  multiple gif interfaces.
94836782d14SWojciech A. Koszekdevice		gif
94936782d14SWojciech A. Koszekdevice		gre
950f325335cSAndrey V. Elsukovdevice		me
95136782d14SWojciech A. Koszekoptions 	XBONEHACK
95236782d14SWojciech A. Koszek
953d5015639SMunechika SUMIKAWA#  The `stf' device implements 6to4 encapsulation.
95436782d14SWojciech A. Koszekdevice		stf
95536782d14SWojciech A. Koszek
9568d69c48bSMax Laier# The pf packet filter consists of three devices:
9578d69c48bSMax Laier#  The `pf' device provides /dev/pf and the firewall code itself.
9588d69c48bSMax Laier#  The `pflog' device provides the pflog0 interface which logs packets.
9598d69c48bSMax Laier#  The `pfsync' device provides the pfsync0 interface used for
9608d69c48bSMax Laier#   synchronization of firewall state tables (over the net).
96136782d14SWojciech A. Koszekdevice		pf
96236782d14SWojciech A. Koszekdevice		pflog
96336782d14SWojciech A. Koszekdevice		pfsync
96436782d14SWojciech A. Koszek
96536782d14SWojciech A. Koszek# Bridge interface.
96636782d14SWojciech A. Koszekdevice		if_bridge
96736782d14SWojciech A. Koszek
96836782d14SWojciech A. Koszek# Common Address Redundancy Protocol. See carp(4) for more details.
96936782d14SWojciech A. Koszekdevice		carp
97036782d14SWojciech A. Koszek
97136782d14SWojciech A. Koszek# IPsec interface.
97236782d14SWojciech A. Koszekdevice		enc
97336782d14SWojciech A. Koszek
97436782d14SWojciech A. Koszek# Link aggregation interface.
97536782d14SWojciech A. Koszekdevice		lagg
97636782d14SWojciech A. Koszek
977744bfb21SJohn Baldwin# WireGuard interface.
978744bfb21SJohn Baldwindevice		wg
979744bfb21SJohn Baldwin
9808d69c48bSMax Laier#
9816a8d6623SGarrett Wollman# Internet family options:
9826a8d6623SGarrett Wollman#
9836a8d6623SGarrett Wollman# MROUTING enables the kernel multicast packet forwarder, which works
9840948f0a2SBruce M Simpson# with mrouted and XORP.
985e0f688baSJeffrey Hsu#
986d29895dcSGarrett Wollman# IPFIREWALL enables support for IP firewall construction, in
987ff6f025aSAlexander Langer# conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
988ff6f025aSAlexander Langer# logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
989ff6f025aSAlexander Langer# limits the number of times a matching entry can be logged.
990ab6e02daSJordan K. Hubbard#
991ab6e02daSJordan K. Hubbard# WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
992ab6e02daSJordan K. Hubbard# and if you do not add other rules during startup to allow access,
993a236d14cSJordan K. Hubbard# YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
994ab6e02daSJordan K. Hubbard# in /etc/rc.conf when first enabling this feature, then refining the
995ab6e02daSJordan K. Hubbard# firewall rules in /etc/rc.firewall after you've tested that the new kernel
996ab6e02daSJordan K. Hubbard# feature works properly.
9978dd4744eSJordan K. Hubbard#
998ffdd472dSPeter Wemm# IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
999ffdd472dSPeter Wemm# allow everything.  Use with care, if a cracker can crash your
1000ffdd472dSPeter Wemm# firewall machine, they can get to your protected machines.  However,
1001ffdd472dSPeter Wemm# if you are using it as an as-needed filter for specific problems as
1002ffdd472dSPeter Wemm# they arise, then this may be for you.  Changing the default to 'allow'
1003ffdd472dSPeter Wemm# means that you won't get stuck if the kernel and /sbin/ipfw binary get
1004ffdd472dSPeter Wemm# out of sync.
1005d29895dcSGarrett Wollman#
100684bb6a2eSAndre Oppermann# IPDIVERT enables the divert IP sockets, used by ``ipfw divert''.  It
100784bb6a2eSAndre Oppermann# depends on IPFIREWALL if compiled into the kernel.
100893e0e116SJulian Elischer#
100961c0e134SPaolo Pisati# IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
1010531c890bSPaolo Pisati# LIBALIAS.
101161c0e134SPaolo Pisati#
1012d8caf56eSAndrey V. Elsukov# IPFIREWALL_NAT64 adds support for in kernel NAT64 in ipfw.
1013d8caf56eSAndrey V. Elsukov#
1014b867e84eSAndrey V. Elsukov# IPFIREWALL_NPTV6 adds support for in kernel NPTv6 in ipfw.
1015b867e84eSAndrey V. Elsukov#
1016aac74aeaSAndrey V. Elsukov# IPFIREWALL_PMOD adds support for protocols modification module. Currently
1017aac74aeaSAndrey V. Elsukov# it supports only TCP MSS modification.
1018aac74aeaSAndrey V. Elsukov#
10191b968362SDag-Erling Smørgrav# IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
10201c9c6382SRuslan Ermilov# packets without touching the TTL).  This can be useful to hide firewalls
10211b968362SDag-Erling Smørgrav# from traceroute and similar tools.
10221b968362SDag-Erling Smørgrav#
10237f7ef494SGleb Smirnoff# PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
10247f7ef494SGleb Smirnoff#
102586a996e6SHiren Panchasara# TCPPCAP enables code which keeps the last n packets sent and received
102686a996e6SHiren Panchasara# on a TCP socket.
102786a996e6SHiren Panchasara#
1028e24e5683SJonathan T. Looney# TCP_BLACKBOX enables enhanced TCP event logging.
1029e24e5683SJonathan T. Looney#
1030bd79708dSJonathan T. Looney# TCP_HHOOK enables the hhook(9) framework hooks for the TCP stack.
103199b0270aSGleb Smirnoff# SOCKET_HHOOK enables the hhook(9) framework hooks for socket operations.
1032bd79708dSJonathan T. Looney#
1033fedeb08bSAlexander V. Chernikov# ROUTE_MPATH provides support for multipath routing.
10349731596aSGleb Smirnoff#
1035e3178a06SJordan K. Hubbardoptions 	MROUTING		# Multicast routing
1036d29895dcSGarrett Wollmanoptions 	IPFIREWALL		#firewall
10374479e72cSCrist J. Clarkoptions 	IPFIREWALL_VERBOSE	#enable logging to syslogd(8)
10385895e3c8SPeter Wemmoptions 	IPFIREWALL_VERBOSE_LIMIT=100	#limit verbosity
1039e43a9900SAlexander Langeroptions 	IPFIREWALL_DEFAULT_TO_ACCEPT	#allow everything by default
104061c0e134SPaolo Pisatioptions 	IPFIREWALL_NAT		#ipfw kernel nat support
1041d8caf56eSAndrey V. Elsukovoptions 	IPFIREWALL_NAT64	#ipfw kernel NAT64 support
1042b867e84eSAndrey V. Elsukovoptions 	IPFIREWALL_NPTV6	#ipfw kernel IPv6 NPT support
104393e0e116SJulian Elischeroptions 	IPDIVERT		#divert sockets
10449cc86ee9SGuido van Rooijoptions 	IPFILTER		#ipfilter support
10459cc86ee9SGuido van Rooijoptions 	IPFILTER_LOG		#ipfilter logging
10460c3757dfSDarren Reedoptions 	IPFILTER_LOOKUP		#ipfilter pools
10478259bcdfSJeroen Ruigrok van der Wervenoptions 	IPFILTER_DEFAULT_BLOCK	#block all packets by default
10481b968362SDag-Erling Smørgravoptions 	IPSTEALTH		#support for stealth forwarding
10497f7ef494SGleb Smirnoffoptions 	PF_DEFAULT_TO_DROP	#drop everything by default
105086a996e6SHiren Panchasaraoptions 	TCPPCAP
1051e24e5683SJonathan T. Looneyoptions 	TCP_BLACKBOX
1052bd79708dSJonathan T. Looneyoptions 	TCP_HHOOK
105399b0270aSGleb Smirnoffoptions		SOCKET_HHOOK
1054fedeb08bSAlexander V. Chernikovoptions 	ROUTE_MPATH
10556a8d6623SGarrett Wollman
105653dcc544SMike Silbersack# The MBUF_STRESS_TEST option enables options which create
105753dcc544SMike Silbersack# various random failures / extreme cases related to mbuf
1058f8f8803bSBruce Evans# functions.  See mbuf(9) for a list of available test cases.
10594e77d255SJulian Elischer# MBUF_PROFILING enables code to profile the mbuf chains
10606eeac1d9SJulian Elischer# exiting the system (via participating interfaces) and
10616eeac1d9SJulian Elischer# return a logarithmic histogram of monitored parameters
10626eeac1d9SJulian Elischer# (e.g. packet size, wasted space, number of mbufs in chain).
106353dcc544SMike Silbersackoptions 	MBUF_STRESS_TEST
10646eeac1d9SJulian Elischeroptions 	MBUF_PROFILING
10654a5ccac7SMike Silbersack
10669c0ef6d5SOliver Fromme# Statically link in accept filters
1067a79b7128SAlfred Perlsteinoptions 	ACCEPT_FILTER_DATA
1068744eaff7SDavid Maloneoptions 	ACCEPT_FILTER_DNS
1069a79b7128SAlfred Perlsteinoptions 	ACCEPT_FILTER_HTTP
1070c68eed82SGleb Smirnoffoptions		ACCEPT_FILTER_TLS
1071a79b7128SAlfred Perlstein
1072b52f8407SBruce M Simpson# TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
1073b52f8407SBruce M Simpson# carried in TCP option 19. This option is commonly used to protect
1074b52f8407SBruce M Simpson# TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
1075b52f8407SBruce M Simpson# This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
1076fcf59617SAndrey V. Elsukov# This requires the use of 'device crypto' and either 'options IPSEC' or
1077fcf59617SAndrey V. Elsukov# 'options IPSEC_SUPPORT'.
10785164136dSBjoern A. Zeeboptions 	TCP_SIGNATURE		#include support for RFC 2385
1079b52f8407SBruce M Simpson
1080f8f8803bSBruce Evans# DUMMYNET enables the "dummynet" bandwidth limiter.  You need IPFIREWALL
1081f8f8803bSBruce Evans# as well.  See dummynet(4) and ipfw(8) for more info.  When you run
10820f882bb1SWarner Losh# DUMMYNET, HZ/kern.hz should be at least 1000 for adequate response.
108368ec4eb6SLuigi Rizzooptions 	DUMMYNET
108468e9d934SLuigi Rizzo
1085dda17b36SConrad Meyer# The DEBUGNET option enables a basic debug/panic-time networking API.  It
1086dda17b36SConrad Meyer# is used by NETDUMP and NETGDB.
1087dda17b36SConrad Meyeroptions 	DEBUGNET
1088dda17b36SConrad Meyer
1089e5054602SMark Johnston# The NETDUMP option enables netdump(4) client support in the kernel.
1090e5054602SMark Johnston# This allows a panicking kernel to transmit a kernel dump to a remote host.
1091e5054602SMark Johnstonoptions 	NETDUMP
1092e5054602SMark Johnston
1093dda17b36SConrad Meyer# The NETGDB option enables netgdb(4) support in the kernel.  This allows a
1094dda17b36SConrad Meyer# panicking kernel to be debugged as a GDB remote over the network.
1095dda17b36SConrad Meyeroptions 	NETGDB
10967790c8c1SConrad Meyer
10976a8d6623SGarrett Wollman#####################################################################
10986a8d6623SGarrett Wollman# FILESYSTEM OPTIONS
1099e3178a06SJordan K. Hubbard
11002365e64fSRodney W. Grimes#
11013f850e6aSKonstantin Belousov# Only the root filesystem needs to be statically compiled or preloaded
11023f850e6aSKonstantin Belousov# as module; everything else will be automatically loaded at mount
11033f850e6aSKonstantin Belousov# time.  Some people still prefer to statically compile other
11043f850e6aSKonstantin Belousov# filesystems as well.
11056a8d6623SGarrett Wollman#
110655793cdcSAttilio Rao# NB: The UNION filesystem was known to be buggy in the past.  It is now
1107534046e3SRong-En Fan# being actively maintained, although there are still some issues being
1108534046e3SRong-En Fan# resolved.
11092365e64fSRodney W. Grimes#
1110f1a9c715SDavid Greenman
11116a8d6623SGarrett Wollman# One of these is mandatory:
11126a8d6623SGarrett Wollmanoptions 	FFS			#Fast filesystem
1113c15882f0SRick Macklemoptions 	NFSCL			#Network File System client
11146a8d6623SGarrett Wollman
11156a8d6623SGarrett Wollman# The rest are optional:
11163914ddf8SEdward Tomasz Napieralaoptions 	AUTOFS			#Automounter filesystem
11175895e3c8SPeter Wemmoptions 	CD9660			#ISO 9660 filesystem
111899d300a1SRuslan Ermilovoptions 	FDESCFS			#File descriptor filesystem
1119123af6ecSAlan Somersoptions 	FUSEFS			#FUSEFS support module
1120dba11ce5SAlexander Langeroptions 	MSDOSFS			#MS DOS File System (FAT, FAT32)
1121dfdcada3SDoug Rabsonoptions 	NFSLOCKD		#Network Lock Manager
11223e32dff5SJohn Baldwinoptions 	NFSD			#Network Filesystem Server
11239c0ef6d5SOliver Frommeoptions 	KGSSAPI			#Kernel GSSAPI implementation
11241bea7c61SMaxim Sobolev
1125f1a9c715SDavid Greenmanoptions 	NULLFS			#NULL filesystem
11264d2647f9SDag-Erling Smørgravoptions 	PROCFS			#Process filesystem (requires PSEUDOFS)
112752ebde4fSDag-Erling Smørgravoptions 	PSEUDOFS		#Pseudo-filesystem framework
1128bcc1205cSDag-Erling Smørgravoptions 	PSEUDOFS_TRACE		#Debugging support for PSEUDOFS
1129237abf0cSDavide Italianooptions 	SMBFS			#SMB/CIFS filesystem
113078920d0fSKevin Looptions 	TMPFS			#Efficient memory filesystem
1131df263cbdSScott Longoptions 	UDF			#Universal Disk Format
113299d300a1SRuslan Ermilovoptions 	UNIONFS			#Union filesystem
1133bcf77694SPeter Wemm# The xFS_ROOT options REQUIRE the associated ``options xFS''
1134bcf77694SPeter Wemmoptions 	NFS_ROOT		#NFS usable as root device
1135f1a9c715SDavid Greenman
1136d0a28bafSAlexander Langer# Soft updates is a technique for improving filesystem speed and
1137d61e6649SAlexander Langer# making abrupt shutdown less risky.
1138f8f8d7afSEivind Eklund#
11393d5c4fdcSPoul-Henning Kampoptions 	SOFTUPDATES
1140b1897c19SJulian Elischer
1141a64ed089SRobert Watson# Extended attributes allow additional data to be associated with files,
114251be6918SChris D. Faulhaber# and is used for ACLs, Capabilities, and MAC labels.
114351be6918SChris D. Faulhaber# See src/sys/ufs/ufs/README.extattr for more information.
114449993db0SRobert Watsonoptions 	UFS_EXTATTR
114549993db0SRobert Watsonoptions 	UFS_EXTATTR_AUTOSTART
1146a64ed089SRobert Watson
114751be6918SChris D. Faulhaber# Access Control List support for UFS filesystems.  The current ACL
114851be6918SChris D. Faulhaber# implementation requires extended attribute support, UFS_EXTATTR,
114951be6918SChris D. Faulhaber# for the underlying filesystem.
115051be6918SChris D. Faulhaber# See src/sys/ufs/ufs/README.acls for more information.
115151be6918SChris D. Faulhaberoptions 	UFS_ACL
115251be6918SChris D. Faulhaber
11539b5ad47fSIan Dowse# Directory hashing improves the speed of operations on very large
11549b5ad47fSIan Dowse# directories at the expense of some memory.
11559b5ad47fSIan Dowseoptions 	UFS_DIRHASH
11569b5ad47fSIan Dowse
1157f348204cSPawel Jakub Dawidek# Gjournal-based UFS journaling support.
1158f348204cSPawel Jakub Dawidekoptions 	UFS_GJOURNAL
1159f348204cSPawel Jakub Dawidek
116071e4fff8SPoul-Henning Kamp# Make space in the kernel for a root filesystem on a md device.
116171e4fff8SPoul-Henning Kamp# Define to the number of kilobytes to reserve for the filesystem.
1162f4c1f0b9SAdrian Chadd# This is now optional.
1163f4c1f0b9SAdrian Chadd# If not defined, the root filesystem passed in as the MFS_IMAGE makeoption
1164f4c1f0b9SAdrian Chadd# will be automatically embedded in the kernel during linking. Its exact size
1165f4c1f0b9SAdrian Chadd# will be consumed within the kernel.
1166f4c1f0b9SAdrian Chadd# If defined, the old way of embedding the filesystem in the kernel will be
1167f4c1f0b9SAdrian Chadd# used. That is to say MD_ROOT_SIZE KB will be allocated in the kernel and
1168f4c1f0b9SAdrian Chadd# later, the filesystem image passed in as the MFS_IMAGE makeoption will be
1169f4c1f0b9SAdrian Chadd# dd'd into the reserved space if it fits.
117071e4fff8SPoul-Henning Kampoptions 	MD_ROOT_SIZE=10
117171e4fff8SPoul-Henning Kamp
117271e4fff8SPoul-Henning Kamp# Make the md device a potential root device, either with preloaded
117371e4fff8SPoul-Henning Kamp# images of type mfs_root or md_root.
117471e4fff8SPoul-Henning Kampoptions 	MD_ROOT
1175d52d7365SPoul-Henning Kamp
11765cf10fb9SIan Lepore# Write-protect the md root device so that it may not be mounted writeable.
11775cf10fb9SIan Leporeoptions 	MD_ROOT_READONLY
11785cf10fb9SIan Lepore
11797b2c7b92SBreno Leitao# Allow to read MD image from external memory regions
11807b2c7b92SBreno Leitaooptions 	MD_ROOT_MEM
11817b2c7b92SBreno Leitao
1182495967e4SEivind Eklund# Disk quotas are supported when this option is enabled.
11832365e64fSRodney W. Grimesoptions 	QUOTA			#enable disk quotas
11846a8d6623SGarrett Wollman
1185276756a4SDag-Erling Smørgrav# If you are running a machine just as a fileserver for PC and MAC
118645c203fcSGleb Smirnoff# users, using SAMBA, you may consider setting this option
1187276756a4SDag-Erling Smørgrav# and keeping all those users' directories on a filesystem that is
1188276756a4SDag-Erling Smørgrav# mounted with the suiddir option. This gives new files the same
1189ec4e5afbSRobert Nordier# ownership as the directory (similar to group). It's a security hole
11906110161fSDag-Erling Smørgrav# if you let these users run programs, so confine it to file-servers
1191276756a4SDag-Erling Smørgrav# (but it'll save you lots of headaches in those cases). Root owned
1192276756a4SDag-Erling Smørgrav# directories are exempt and X bits are cleared. The suid bit must be
11939c0ef6d5SOliver Fromme# set on the directory as well; see chmod(1). PC owners can't see/set
1194276756a4SDag-Erling Smørgrav# ownerships so they keep getting their toes trodden on. This saves
1195276756a4SDag-Erling Smørgrav# you all the support calls as the filesystem it's used on will act as
1196276756a4SDag-Erling Smørgrav# they expect: "It's my dir so it must be my file".
1197cb800e34SJulian Elischer#
1198cb800e34SJulian Elischeroptions 	SUIDDIR
1199cb800e34SJulian Elischer
1200df394affSJohn-Mark Gurney# NFS options:
12015895e3c8SPeter Wemmoptions 	NFS_MINATTRTIMO=3	# VREG attrib cache timeout in sec
12025895e3c8SPeter Wemmoptions 	NFS_MAXATTRTIMO=60
12035895e3c8SPeter Wemmoptions 	NFS_MINDIRATTRTIMO=30	# VDIR attrib cache timeout in sec
12045895e3c8SPeter Wemmoptions 	NFS_MAXDIRATTRTIMO=60
1205df394affSJohn-Mark Gurneyoptions 	NFS_DEBUG		# Enable NFS Debugging
1206df394affSJohn-Mark Gurney
1207053a2b61SEivind Eklund#
1208053a2b61SEivind Eklund# Add support for the EXT2FS filesystem of Linux fame.  Be a bit
1209053a2b61SEivind Eklund# careful with this - the ext2fs code has a tendency to lag behind
1210053a2b61SEivind Eklund# changes and not be exercised very much, so mounting read/write could
1211053a2b61SEivind Eklund# be dangerous (and even mounting read only could result in panics.)
1212053a2b61SEivind Eklund#
12135895e3c8SPeter Wemmoptions 	EXT2FS
1214053a2b61SEivind Eklund
12158ab2f5ecSMark Murray# The system memory devices; /dev/mem, /dev/kmem
1216e83e229dSWarner Loshdevice		mem
12178ab2f5ecSMark Murray
121800a5db46SStacey Son# The kernel symbol table device; /dev/ksyms
121900a5db46SStacey Sondevice		ksyms
122000a5db46SStacey Son
1221c4f02a89SMax Khon# Optional character code conversion support with LIBICONV.
1222c4f02a89SMax Khon# Each option requires their base file system and LIBICONV.
1223c4f02a89SMax Khonoptions 	CD9660_ICONV
1224c4f02a89SMax Khonoptions 	MSDOSFS_ICONV
1225126f0dfaSScott Longoptions 	UDF_ICONV
1226c4f02a89SMax Khon
12276a8d6623SGarrett Wollman
12286a8d6623SGarrett Wollman#####################################################################
1229abc97a06SBruce Evans# POSIX P1003.1B
1230abc97a06SBruce Evans
12311c9c6382SRuslan Ermilov# Real time extensions added in the 1993 POSIX
1232abc97a06SBruce Evans# _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1233abc97a06SBruce Evans
12345895e3c8SPeter Wemmoptions 	_KPOSIX_PRIORITY_SCHEDULING
12358cbf4973SAlfred Perlstein# p1003_1b_semaphores are very experimental,
12368cbf4973SAlfred Perlstein# user should be ready to assist in debugging if problems arise.
12373ffb9fadSAlfred Perlsteinoptions 	P1003_1B_SEMAPHORES
1238abc97a06SBruce Evans
12395b40ce27SDavid Xu# POSIX message queue
12405b40ce27SDavid Xuoptions 	P1003_1B_MQUEUE
1241abc97a06SBruce Evans
1242abc97a06SBruce Evans#####################################################################
124312e9f256SRobert Watson# SECURITY POLICY PARAMETERS
124412e9f256SRobert Watson
1245fdcba197SRobert Watson# Support for BSM audit
1246fdcba197SRobert Watsonoptions 	AUDIT
1247fdcba197SRobert Watson
1248cd6d1d76SBruce Evans# Support for Mandatory Access Control (MAC):
1249cd6d1d76SBruce Evansoptions 	MAC
1250eae2f20cSRobert Watsonoptions 	MAC_BIBA
1251eae2f20cSRobert Watsonoptions 	MAC_BSDEXTENDED
1252287d467cSMitchell Horneoptions 	MAC_DDB
1253eae2f20cSRobert Watsonoptions 	MAC_IFOFF
1254215bab79SShivank Gargoptions 	MAC_IPACL
1255c4725737SRobert Watsonoptions 	MAC_LOMAC
1256eae2f20cSRobert Watsonoptions 	MAC_MLS
1257eae2f20cSRobert Watsonoptions 	MAC_NONE
12583496c981SIan Leporeoptions 	MAC_NTPD
1259eae2f20cSRobert Watsonoptions 	MAC_PARTITION
126003d03162SRobert Watsonoptions 	MAC_PORTACL
1261bf2fa8d9SFlorian Walpenoptions 	MAC_PRIORITY
1262eae2f20cSRobert Watsonoptions 	MAC_SEEOTHERUIDS
1263782f7255SRobert Watsonoptions 	MAC_STUB
1264eae2f20cSRobert Watsonoptions 	MAC_TEST
1265d3791ac4SDag-Erling Smørgravoptions 	MAC_VERIEXEC
1266d3791ac4SDag-Erling Smørgravoptions 	MAC_VERIEXEC_SHA1
1267d3791ac4SDag-Erling Smørgravoptions 	MAC_VERIEXEC_SHA256
1268d3791ac4SDag-Erling Smørgravoptions 	MAC_VERIEXEC_SHA384
1269d3791ac4SDag-Erling Smørgravoptions 	MAC_VERIEXEC_SHA512
1270d3791ac4SDag-Erling Smørgravdevice		mac_veriexec_parser
127112e9f256SRobert Watson
127296fcc75fSRobert Watson# Support for Capsicum
127355d4d6f4SJonathan Andersonoptions 	CAPABILITIES	# fine-grained rights on file descriptors
127455d4d6f4SJonathan Andersonoptions 	CAPABILITY_MODE	# sandboxes with no global namespace access
127596fcc75fSRobert Watson
127612e9f256SRobert Watson
127712e9f256SRobert Watson#####################################################################
1278000033d0SJeroen Ruigrok van der Werven# CLOCK OPTIONS
1279000033d0SJeroen Ruigrok van der Werven
12800f882bb1SWarner Losh# The granularity of operation is controlled by the kernel option HZ (default
12810febdc5eSWarner Losh# frequency of 1000 Hz or a period 1ms between calls). Virtual machine guests
12820febdc5eSWarner Losh# use a value of 100. Lower values may lower overhead at the expense of accuracy
12830febdc5eSWarner Losh# of scheduling, though the adaptive tick code reduces that overhead.
1284000033d0SJeroen Ruigrok van der Werven
1285000033d0SJeroen Ruigrok van der Wervenoptions 	HZ=100
1286000033d0SJeroen Ruigrok van der Werven
12874cc167a3SKonstantin Belousov# Enable support for the kernel PLL to use an external PPS signal,
12884cc167a3SKonstantin Belousov# under supervision of [x]ntpd(8)
12894cc167a3SKonstantin Belousov# More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
12904cc167a3SKonstantin Belousov
12914cc167a3SKonstantin Belousovoptions 	PPS_SYNC
12924cc167a3SKonstantin Belousov
1293b0fdc837SLawrence Stewart# Enable support for generic feed-forward clocks in the kernel.
1294b0fdc837SLawrence Stewart# The feed-forward clock support is an alternative to the feedback oriented
1295b0fdc837SLawrence Stewart# ntpd/system clock approach, and is to be used with a feed-forward
1296b0fdc837SLawrence Stewart# synchronization algorithm such as the RADclock:
1297b0fdc837SLawrence Stewart# More info here: http://www.synclab.org/radclock
1298b0fdc837SLawrence Stewart
1299b0fdc837SLawrence Stewartoptions 	FFCLOCK
1300b0fdc837SLawrence Stewart
1301000033d0SJeroen Ruigrok van der Werven
1302000033d0SJeroen Ruigrok van der Werven#####################################################################
1303de6a307eSPeter Dufault# SCSI DEVICES
1304de6a307eSPeter Dufault
13056a8d6623SGarrett Wollman# SCSI DEVICE CONFIGURATION
13066a8d6623SGarrett Wollman
13076a8d6623SGarrett Wollman# The SCSI subsystem consists of the `base' SCSI code, a number of
1308ebc1a0e2SPeter Dufault# high-level SCSI device `type' drivers, and the low-level host-adapter
13096a8d6623SGarrett Wollman# device drivers.  The host adapters are listed in the ISA and PCI
13106a8d6623SGarrett Wollman# device configuration sections below.
13116a8d6623SGarrett Wollman#
1312e14eb5a1SGarrett Wollman# It is possible to wire down your SCSI devices so that a given bus,
1313e14eb5a1SGarrett Wollman# target, and LUN always come on line as the same device unit.  In
1314e14eb5a1SGarrett Wollman# earlier versions the unit numbers were assigned in the order that
1315e14eb5a1SGarrett Wollman# the devices were probed on the SCSI bus.  This means that if you
1316e14eb5a1SGarrett Wollman# removed a disk drive, you may have had to rewrite your /etc/fstab
1317e14eb5a1SGarrett Wollman# file, and also that you had to be careful when adding a new disk
1318e14eb5a1SGarrett Wollman# as it may have been probed earlier and moved your device configuration
1319ac8e5d02SConrad Meyer# around.
1320ebc1a0e2SPeter Dufault
1321ebc1a0e2SPeter Dufault# This old behavior is maintained as the default behavior.  The unit
1322ebc1a0e2SPeter Dufault# assignment begins with the first non-wired down unit for a device
1323700daf5eSJustin T. Gibbs# type.  For example, if you wire a disk as "da3" then the first
1324700daf5eSJustin T. Gibbs# non-wired disk will be assigned da4.
1325ebc1a0e2SPeter Dufault
1326ebc1a0e2SPeter Dufault# The syntax for wiring down devices is:
1327ebc1a0e2SPeter Dufault
1328f9ba2bbeSWarner Loshenvvar		hint.scbus.0.at="ahc0"
1329f9ba2bbeSWarner Loshenvvar		hint.scbus.1.at="ahc1"
1330f9ba2bbeSWarner Loshenvvar		hint.scbus.1.bus="0"
1331f9ba2bbeSWarner Loshenvvar		hint.scbus.3.at="ahc2"
1332f9ba2bbeSWarner Loshenvvar		hint.scbus.3.bus="0"
1333f9ba2bbeSWarner Loshenvvar		hint.scbus.2.at="ahc2"
1334f9ba2bbeSWarner Loshenvvar		hint.scbus.2.bus="1"
1335f9ba2bbeSWarner Loshenvvar		hint.da.0.at="scbus0"
1336f9ba2bbeSWarner Loshenvvar		hint.da.0.target="0"
1337f9ba2bbeSWarner Loshenvvar		hint.da.0.unit="0"
1338f9ba2bbeSWarner Loshenvvar		hint.da.1.at="scbus3"
1339f9ba2bbeSWarner Loshenvvar		hint.da.1.target="1"
1340f9ba2bbeSWarner Loshenvvar		hint.da.2.at="scbus2"
1341f9ba2bbeSWarner Loshenvvar		hint.da.2.target="3"
1342f9ba2bbeSWarner Loshenvvar		hint.sa.1.at="scbus1"
1343f9ba2bbeSWarner Loshenvvar		hint.sa.1.target="6"
1344ebc1a0e2SPeter Dufault
1345ebc1a0e2SPeter Dufault# "units" (SCSI logical unit number) that are not specified are
1346ebc1a0e2SPeter Dufault# treated as if specified as LUN 0.
1347ebc1a0e2SPeter Dufault
1348ebc1a0e2SPeter Dufault# All SCSI devices allocate as many units as are required.
1349ebc1a0e2SPeter Dufault
1350cf2458c9SMatt Jacob# The ch driver drives SCSI Media Changer ("jukebox") devices.
1351cf2458c9SMatt Jacob#
1352cf2458c9SMatt Jacob# The da driver drives SCSI Direct Access ("disk") and Optical Media
1353cf2458c9SMatt Jacob# ("WORM") devices.
1354cf2458c9SMatt Jacob#
1355cf2458c9SMatt Jacob# The sa driver drives SCSI Sequential Access ("tape") devices.
1356cf2458c9SMatt Jacob#
1357cf2458c9SMatt Jacob# The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1358cf2458c9SMatt Jacob#
13593c7c6c12SMike Pritchard# The ses driver drives SCSI Environment Services ("ses") and
13603c7c6c12SMike Pritchard# SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1361cf2458c9SMatt Jacob#
1362cf2458c9SMatt Jacob# The pt driver drives SCSI Processor devices.
1363cf2458c9SMatt Jacob#
13641eba4c79SScott Long# The sg driver provides a passthrough API that is compatible with the
1365e013e369SDmitry Chagin# Linux SG driver.  It will work in conjunction with the Linuxulator
1366e013e369SDmitry Chagin# to run linux SG apps.  It can also stand on its own and provide
1367d51e8487SJosh Paetzel# source level API compatibility for porting apps to FreeBSD.
1368cf2458c9SMatt Jacob#
1369cf2458c9SMatt Jacob# Target Mode support is provided here but also requires that a SIM
1370cf2458c9SMatt Jacob# (SCSI Host Adapter Driver) provide support as well.
1371cf2458c9SMatt Jacob#
1372cf2458c9SMatt Jacob# The targ driver provides target mode support as a Processor type device.
1373cf2458c9SMatt Jacob# It exists to give the minimal context necessary to respond to Inquiry
1374cf2458c9SMatt Jacob# commands. There is a sample user application that shows how the rest
1375cf2458c9SMatt Jacob# of the command support might be done in /usr/share/examples/scsi_target.
1376cf2458c9SMatt Jacob#
1377cf2458c9SMatt Jacob# The targbh driver provides target mode support and exists to respond
1378cf2458c9SMatt Jacob# to incoming commands that do not otherwise have a logical unit assigned
1379cf2458c9SMatt Jacob# to them.
1380cf2458c9SMatt Jacob#
1381b2420d4dSSergey Kandaurov# The pass driver provides a passthrough API to access the CAM subsystem.
1382ebc1a0e2SPeter Dufault
1383c9953c3bSPeter Wemmdevice		scbus		#base SCSI code
1384c9953c3bSPeter Wemmdevice		ch		#SCSI media changers
1385c9953c3bSPeter Wemmdevice		da		#SCSI direct access devices (aka disks)
1386c9953c3bSPeter Wemmdevice		sa		#SCSI tapes
1387c9953c3bSPeter Wemmdevice		cd		#SCSI CD-ROMs
1388dc0aa406SAlexander Motindevice		ses		#Enclosure Services (SES and SAF-TE)
1389cf2458c9SMatt Jacobdevice		pt		#SCSI processor
139064ed91d5SMatt Jacobdevice		targ		#SCSI Target Mode Code
139164ed91d5SMatt Jacobdevice		targbh		#SCSI Target Mode Blackhole Device
1392cf2458c9SMatt Jacobdevice		pass		#CAM passthrough driver
13931eba4c79SScott Longdevice		sg		#Linux SCSI passthrough
1394130f4520SKenneth D. Merrydevice		ctl		#CAM Target Layer
13958909a72bSPeter Dufault
1396700daf5eSJustin T. Gibbs# CAM OPTIONS:
1397700daf5eSJustin T. Gibbs# debugging options:
1398f0f25b9cSAlexander Motin# CAMDEBUG		Compile in all possible debugging.
1399f0f25b9cSAlexander Motin# CAM_DEBUG_COMPILE	Debug levels to compile in.
1400f0f25b9cSAlexander Motin# CAM_DEBUG_FLAGS	Debug levels to enable on boot.
1401f0f25b9cSAlexander Motin# CAM_DEBUG_BUS		Limit debugging to the given bus.
1402f0f25b9cSAlexander Motin# CAM_DEBUG_TARGET	Limit debugging to the given target.
1403f0f25b9cSAlexander Motin# CAM_DEBUG_LUN		Limit debugging to the given lun.
1404f0f25b9cSAlexander Motin# CAM_DEBUG_DELAY	Delay in us after printing each debug line.
1405a3851eecSAlan Somers# CAM_IO_STATS		Publish additional CAM device statics by sysctl
1406700daf5eSJustin T. Gibbs#
1407700daf5eSJustin T. Gibbs# CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1408700daf5eSJustin T. Gibbs# SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1409700daf5eSJustin T. Gibbs# SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
141056234437SKenneth D. Merry# SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
141156234437SKenneth D. Merry#             queue after a bus reset, and the number of milliseconds to
14123a937198SBrooks Davis#             freeze the device queue after a bus device reset.  This
14133a937198SBrooks Davis#             can be changed at boot and runtime with the
14143a937198SBrooks Davis#             kern.cam.scsi_delay tunable/sysctl.
1415700daf5eSJustin T. Gibbsoptions 	CAMDEBUG
1416f0f25b9cSAlexander Motinoptions 	CAM_DEBUG_COMPILE=-1
1417f0f25b9cSAlexander Motinoptions 	CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
14185895e3c8SPeter Wemmoptions 	CAM_DEBUG_BUS=-1
14195895e3c8SPeter Wemmoptions 	CAM_DEBUG_TARGET=-1
14205895e3c8SPeter Wemmoptions 	CAM_DEBUG_LUN=-1
1421f0f25b9cSAlexander Motinoptions 	CAM_DEBUG_DELAY=1
14225895e3c8SPeter Wemmoptions 	CAM_MAX_HIGHPOWER=4
1423700daf5eSJustin T. Gibbsoptions 	SCSI_NO_SENSE_STRINGS
1424700daf5eSJustin T. Gibbsoptions 	SCSI_NO_OP_STRINGS
142532672ba8SAndre Oppermannoptions 	SCSI_DELAY=5000	# Be pessimistic about Joe SCSI device
1426a25d93e5SBjoern A. Zeeboptions 	CAM_IOSCHED_DYNAMIC
1427a3851eecSAlan Somersoptions 	CAM_IO_STATS
1428d38677d2SWarner Loshoptions 	CAM_TEST_FAILURE
14291a7c583cSGarrett Wollman
1430700daf5eSJustin T. Gibbs# Options for the CAM CDROM driver:
1431700daf5eSJustin T. Gibbs# CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1432700daf5eSJustin T. Gibbs# CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1433700daf5eSJustin T. Gibbs#                           enforced if there is I/O waiting for another LUN
1434700daf5eSJustin T. Gibbs# The compiled in defaults for these variables are 2 and 10 seconds,
1435700daf5eSJustin T. Gibbs# respectively.
143693063432SJoerg Wunsch#
1437700daf5eSJustin T. Gibbs# These can also be changed on the fly with the following sysctl variables:
1438700daf5eSJustin T. Gibbs# kern.cam.cd.changer.min_busy_seconds
1439700daf5eSJustin T. Gibbs# kern.cam.cd.changer.max_busy_seconds
144093063432SJoerg Wunsch#
14415895e3c8SPeter Wemmoptions 	CHANGER_MIN_BUSY_SECONDS=2
14425895e3c8SPeter Wemmoptions 	CHANGER_MAX_BUSY_SECONDS=10
144393063432SJoerg Wunsch
14449dfb4471SKenneth D. Merry# Options for the CAM sequential access driver:
1445b29f9e40SMatt Jacob# SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
14469dfb4471SKenneth D. Merry# SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
14479dfb4471SKenneth D. Merry# SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
14489dfb4471SKenneth D. Merry# SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
14499f050ed5SMatt Jacob# SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
145025388b6cSBruce Evansoptions 	SA_IO_TIMEOUT=4
145125388b6cSBruce Evansoptions 	SA_SPACE_TIMEOUT=60
145225388b6cSBruce Evansoptions 	SA_REWIND_TIMEOUT=(2*60)
145325388b6cSBruce Evansoptions 	SA_ERASE_TIMEOUT=(4*60)
14549f050ed5SMatt Jacoboptions 	SA_1FM_AT_EOD
14559dfb4471SKenneth D. Merry
14563ece1bd2SKenneth D. Merry# Optional timeout for the CAM processor target (pt) device
14573ece1bd2SKenneth D. Merry# This is specified in seconds.  The default is 60 seconds.
145825388b6cSBruce Evansoptions 	SCSI_PT_DEFAULT_TIMEOUT=60
14593ece1bd2SKenneth D. Merry
14608904e70bSMatt Jacob# Optional enable of doing SES passthrough on other devices (e.g., disks)
14618904e70bSMatt Jacob#
14628904e70bSMatt Jacob# Normally disabled because a lot of newer SCSI disks report themselves
14638904e70bSMatt Jacob# as having SES capabilities, but this can then clot up attempts to build
14649c0ef6d5SOliver Fromme# a topology with the SES device that's on the box these drives are in....
14658904e70bSMatt Jacoboptions 	SES_ENABLE_PASSTHROUGH
14668904e70bSMatt Jacob
146776f22e35SJohn Baldwin# iSCSI
146876f22e35SJohn Baldwin#
146976f22e35SJohn Baldwin# iSCSI permits access to SCSI peripherals over a network connection
147076f22e35SJohn Baldwin# (e.g. via a TCP/IP socket)
147176f22e35SJohn Baldwin
147276f22e35SJohn Baldwindevice		cfiscsi		# CAM Target Layer iSCSI target frontend
147376f22e35SJohn Baldwindevice		iscsi		# iSCSI initiator
147476f22e35SJohn Baldwindevice		iser		# iSCSI Extensions for RDMA (iSER) initiator
147576f22e35SJohn Baldwin
14766a8d6623SGarrett Wollman
14776a8d6623SGarrett Wollman#####################################################################
14786a8d6623SGarrett Wollman# MISCELLANEOUS DEVICES AND OPTIONS
14796a8d6623SGarrett Wollman
1480bc093719SEd Schoutendevice		pty		#BSD-style compatibility pseudo ttys
14816d823e81SJulian Elischerdevice		nmdm		#back-to-back tty devices
1482f71c01ccSPeter Wemmdevice		md		#Memory/malloc disk
1483932ef5b5SEd Schoutendevice		snp		#Snoop device - to look at pty/vty/etc..
1484efacde1bSBrooks Davisdevice		ccd		#Concatenated disk driver
14856aec1278SMax Laierdevice		firmware	#firmware(9) support
1486be174c7eSGreg Lehey
14876f2d8adbSBoris Popov# Kernel side iconv library
14886f2d8adbSBoris Popovoptions 	LIBICONV
14896f2d8adbSBoris Popov
149058067a99SPoul-Henning Kamp# Size of the kernel message buffer.  Should be N * pagesize.
14915895e3c8SPeter Wemmoptions 	MSGBUF_SIZE=40960
149258067a99SPoul-Henning Kamp
14936a8d6623SGarrett Wollman
14946a8d6623SGarrett Wollman#####################################################################
1495e131ba36SJohn Baldwin# HARDWARE BUS CONFIGURATION
1496e131ba36SJohn Baldwin
1497e131ba36SJohn Baldwin#
1498e131ba36SJohn Baldwin# PCI bus & PCI options:
1499e131ba36SJohn Baldwin#
1500e131ba36SJohn Baldwindevice		pci
150182cb5c3bSJohn Baldwinoptions 	PCI_HP			# PCI-Express native HotPlug
1502c41df401SJohn Baldwinoptions 	PCI_IOV			# PCI SR-IOV support
1503e131ba36SJohn Baldwin
1504e131ba36SJohn Baldwin
1505e131ba36SJohn Baldwin#####################################################################
1506d61e6649SAlexander Langer# HARDWARE DEVICE CONFIGURATION
1507d61e6649SAlexander Langer
1508d61e6649SAlexander Langer# For ISA the required hints are listed.
1509c0c70334SWarner Losh# PCI, CardBus, and SD/MMC are self identifying buses, so
15105bcb64f2SWarner Losh# no hints are needed.
1511d61e6649SAlexander Langer
1512d61e6649SAlexander Langer#
1513d61e6649SAlexander Langer# Mandatory devices:
1514d61e6649SAlexander Langer#
1515d61e6649SAlexander Langer
15166e818956SDavid E. O'Brien# These options are valid for other keyboard drivers as well.
15176e818956SDavid E. O'Brienoptions 	KBD_DISABLE_KEYMAP_LOAD	# refuse to load a keymap
15186e818956SDavid E. O'Brienoptions 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
15198d966fb0SMichael Paepcke
15208d966fb0SMichael Paepcke# Define keyboard latency (try 200/15 for a snappy interactive console)
1521a4b92fefSWarner Loshoptions 	KBD_DELAY1=200		# define initial key delay
1522a4b92fefSWarner Loshoptions 	KBD_DELAY2=15		# define key delay
15236e818956SDavid E. O'Brien
152446360281SEd Mastedevice		kbdmux			# keyboard multiplexer
152546360281SEd Masteoptions 	KBDMUX_DFLT_KEYMAP	# specify the built-in keymap
152646360281SEd Mastemakeoptions	KBDMUX_DFLT_KEYMAP=it.iso
152746360281SEd Maste
15287f5092f3SJohn Baldwinoptions 	FB_DEBUG		# Frame buffer debugging
15297f5092f3SJohn Baldwin
153083409a55SEd Schouten# Enable experimental features of the syscons terminal emulator (teken).
1531e42fc368SEd Schoutenoptions 	TEKEN_CONS25		# cons25-style terminal emulation
153283409a55SEd Schoutenoptions 	TEKEN_UTF8		# UTF-8 output handling
153383409a55SEd Schouten
1534ccbb7b5eSEd Maste# The vt video console driver.
1535ccbb7b5eSEd Mastedevice		vt
1536ccbb7b5eSEd Masteoptions 	VT_ALT_TO_ESC_HACK=1	# Prepend ESC sequence to ALT keys
1537ccbb7b5eSEd Masteoptions 	VT_MAXWINDOWS=16	# Number of virtual consoles
1538ccbb7b5eSEd Masteoptions 	VT_TWOBUTTON_MOUSE	# Use right mouse button to paste
1539ccbb7b5eSEd Maste
1540e9ee2675SMark Johnston# The following options set the maximum framebuffer size.
1541e9ee2675SMark Johnstonoptions 	VT_FB_MAX_HEIGHT=480
1542e9ee2675SMark Johnstonoptions 	VT_FB_MAX_WIDTH=640
1543ccbb7b5eSEd Maste
1544ccbb7b5eSEd Maste# The following options will let you change the default vt terminal colors.
1545ccbb7b5eSEd Masteoptions 	TERMINAL_NORM_ATTR=(FG_GREEN|BG_BLACK)
1546ccbb7b5eSEd Masteoptions 	TERMINAL_KERN_ATTR=(FG_LIGHTRED|BG_BLACK)
1547ccbb7b5eSEd Maste
15481fe04850SBruce Evans#
1549d61e6649SAlexander Langer# Optional devices:
15506a8d6623SGarrett Wollman#
15516a8d6623SGarrett Wollman
15526a8d6623SGarrett Wollman#
1553d61e6649SAlexander Langer# SCSI host adapters:
15546a8d6623SGarrett Wollman#
1555d8c51c6fSLeandro Lupori# aacraid: Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming
1556d8c51c6fSLeandro Lupori#          families. Container interface, CAM required.
1557d61e6649SAlexander Langer# ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1558d61e6649SAlexander Langer#      19160x/29160x, aic7770/aic78xx
1559cdd49e97SJustin T. Gibbs# ahd: Adaptec 29320/39320 Controllers.
1560d61e6649SAlexander Langer# isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1561d61e6649SAlexander Langer#      ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1562d61e6649SAlexander Langer#      ISP 12160 Ultra3 SCSI,
1563e8a0f829SMatt Jacob#      Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1564e8a0f829SMatt Jacob#      Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1565af606348SMatt Jacob#      Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
1566ac918c84SMatt Jacob# ispfw: Firmware module for Qlogic host adapters
1567f7ab0158SWarner Losh# mpr: LSI-Logic MPT/Fusion Gen 3
1568f7ab0158SWarner Losh# mps: LSI-Logic MPT/Fusion Gen 2
156964fa5108SMatt Jacob# mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
157064fa5108SMatt Jacob#      or FC9x9 Fibre Channel host adapters.
1571fb91fd69SGerard Roudier# sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1572fb91fd69SGerard Roudier#      53C810, 53C810A, 53C815, 53C825,  53C825A, 53C860, 53C875,
1573fb91fd69SGerard Roudier#      53C876, 53C885,  53C895, 53C895A, 53C896,  53C897, 53C1510D,
1574fb91fd69SGerard Roudier#      53C1010-33, 53C1010-66.
1575d61e6649SAlexander Langer
1576d8c51c6fSLeandro Luporidevice		aacraid
1577d61e6649SAlexander Langerdevice		ahc
1578cdd49e97SJustin T. Gibbsdevice		ahd
1579d61e6649SAlexander Langerdevice		isp
1580f9ba2bbeSWarner Loshenvvar		hint.isp.0.disable="1"
1581f9ba2bbeSWarner Loshenvvar		hint.isp.0.role="3"
1582f9ba2bbeSWarner Loshenvvar		hint.isp.0.prefer_iomap="1"
1583f9ba2bbeSWarner Loshenvvar		hint.isp.0.prefer_memmap="1"
1584f9ba2bbeSWarner Loshenvvar		hint.isp.0.fwload_disable="1"
1585f9ba2bbeSWarner Loshenvvar		hint.isp.0.ignore_nvram="1"
1586f9ba2bbeSWarner Loshenvvar		hint.isp.0.fullduplex="1"
1587f9ba2bbeSWarner Loshenvvar		hint.isp.0.topology="lport"
1588f9ba2bbeSWarner Loshenvvar		hint.isp.0.topology="nport"
1589f9ba2bbeSWarner Loshenvvar		hint.isp.0.topology="lport-only"
1590f9ba2bbeSWarner Loshenvvar		hint.isp.0.topology="nport-only"
15910787f2b8SMatt Jacob# we can't get u_int64_t types, nor can we get strings if it's got
15920787f2b8SMatt Jacob# a leading 0x, hence this silly dodge.
1593f9ba2bbeSWarner Loshenvvar		hint.isp.0.portwnn="w50000000aaaa0000"
1594f9ba2bbeSWarner Loshenvvar		hint.isp.0.nodewnn="w50000000aaaa0001"
1595d61e6649SAlexander Langerdevice		ispfw
1596f7ab0158SWarner Loshdevice		mpr			# LSI-Logic MPT-Fusion 3
1597f7ab0158SWarner Loshdevice		mps			# LSI-Logic MPT-Fusion 2
1598f7ab0158SWarner Loshdevice		mpt			# LSI-Logic MPT-Fusion
1599d61e6649SAlexander Langerdevice		sym
1600d61e6649SAlexander Langer
1601d61e6649SAlexander Langer# The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1602d61e6649SAlexander Langer# controllers that have it configured only if this option is set. Unfortunately,
1603d61e6649SAlexander Langer# this doesn't work on some motherboards, which prevents it from being the
1604d61e6649SAlexander Langer# default.
1605d61e6649SAlexander Langeroptions 	AHC_ALLOW_MEMIO
1606d61e6649SAlexander Langer
1607fac70739SJeroen Ruigrok van der Werven# Dump the contents of the ahc controller configuration PROM.
1608fac70739SJeroen Ruigrok van der Wervenoptions 	AHC_DUMP_EEPROM
1609fac70739SJeroen Ruigrok van der Werven
1610fac70739SJeroen Ruigrok van der Werven# Bitmap of units to enable targetmode operations.
1611fac70739SJeroen Ruigrok van der Wervenoptions 	AHC_TMODE_ENABLE
1612fac70739SJeroen Ruigrok van der Werven
1613662d3818SScott Long# Compile in Aic7xxx Debugging code.
1614662d3818SScott Longoptions 	AHC_DEBUG
1615662d3818SScott Long
1616662d3818SScott Long# Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1617662d3818SScott Longoptions 	AHC_DEBUG_OPTS
1618662d3818SScott Long
1619f8f8803bSBruce Evans# Print register bitfields in debug output.  Adds ~128k to driver
1620f8f8803bSBruce Evans# See ahc(4).
1621662d3818SScott Longoptions 	AHC_REG_PRETTY_PRINT
1622662d3818SScott Long
1623cdd49e97SJustin T. Gibbs# Compile in aic79xx debugging code.
1624cdd49e97SJustin T. Gibbsoptions 	AHD_DEBUG
1625cdd49e97SJustin T. Gibbs
1626f8f8803bSBruce Evans# Aic79xx driver debugging options.  Adds ~215k to driver.  See ahd(4).
1627cdd49e97SJustin T. Gibbsoptions 	AHD_DEBUG_OPTS=0xFFFFFFFF
1628cdd49e97SJustin T. Gibbs
162943e9d8a3SScott Long# Print human-readable register definitions when debugging
163043e9d8a3SScott Longoptions 	AHD_REG_PRETTY_PRINT
163143e9d8a3SScott Long
1632662d3818SScott Long# Bitmap of units to enable targetmode operations.
1633662d3818SScott Longoptions 	AHD_TMODE_ENABLE
1634662d3818SScott Long
1635d61e6649SAlexander Langer# Options used in dev/isp/ (Qlogic SCSI/FC driver).
1636d61e6649SAlexander Langer#
1637d61e6649SAlexander Langer#	ISP_TARGET_MODE		-	enable target mode operation
1638d61e6649SAlexander Langer#
163964fa5108SMatt Jacoboptions 	ISP_TARGET_MODE=1
1640af606348SMatt Jacob#
16419a1b0d43SMatt Jacob#	ISP_DEFAULT_ROLES	-	default role
16429a1b0d43SMatt Jacob#		none=0
16439a1b0d43SMatt Jacob#		target=1
16449a1b0d43SMatt Jacob#		initiator=2
16459a1b0d43SMatt Jacob#		both=3			(not supported currently)
1646af606348SMatt Jacob#
164715f0f952SMatt Jacob#	ISP_INTERNAL_TARGET		(trivial internal disk target, for testing)
164815f0f952SMatt Jacob#
1649e2873b76SMatt Jacoboptions 	ISP_DEFAULT_ROLES=0
1650d61e6649SAlexander Langer
1651d61e6649SAlexander Langer#options 	SYM_SETUP_SCSI_DIFF	#-HVD support for 825a, 875, 885
1652d61e6649SAlexander Langer					# disabled:0 (default), enabled:1
1653d61e6649SAlexander Langer#options 	SYM_SETUP_PCI_PARITY	#-PCI parity checking
1654d61e6649SAlexander Langer					# disabled:0, enabled:1 (default)
1655d61e6649SAlexander Langer#options 	SYM_SETUP_MAX_LUN	#-Number of LUNs supported
1656d61e6649SAlexander Langer					# default:8, range:[1..64]
16576a8d6623SGarrett Wollman
16586e818956SDavid E. O'Brien#
16596e818956SDavid E. O'Brien# Compaq "CISS" RAID controllers (SmartRAID 5* series)
16606e818956SDavid E. O'Brien# These controllers have a SCSI-like interface, and require the
16616e818956SDavid E. O'Brien# CAM infrastructure.
16626e818956SDavid E. O'Brien#
16636e818956SDavid E. O'Briendevice		ciss
16646e818956SDavid E. O'Brien
16656e818956SDavid E. O'Brien#
16666e818956SDavid E. O'Brien# Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers.  Only
16676e818956SDavid E. O'Brien# one entry is needed; the code will find and configure all supported
16686e818956SDavid E. O'Brien# controllers.
16696e818956SDavid E. O'Brien#
16706e818956SDavid E. O'Briendevice		ida		# Compaq Smart RAID
16716e818956SDavid E. O'Briendevice		mlx		# Mylex DAC960
16727f631a41SScott Longdevice		mfi		# LSI MegaRAID SAS
1673f366931cSScott Longdevice		mfip		# LSI MegaRAID SAS passthrough, requires CAM
16746b31d3f7SScott Longoptions 	MFI_DEBUG
1675a58b4afaSMark Johnstondevice		mrsas		# LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
16766e818956SDavid E. O'Brien
16778f7105a2SJohn Baldwin# NVM Express
16788f7105a2SJohn Baldwin#
16798f7105a2SJohn Baldwin# nvme:	PCI-express NVM Express host controllers
1680a1eda741SJohn Baldwin# nvmf:	NVM Express over Fabrics host
1681a15f7c96SJohn Baldwin# nvmft: NVM Express over Fabrics CAM Target Layer frontend
168259144db3SJohn Baldwin# nvmf_tcp: TCP transport for NVM Express over Fabrics
16838f7105a2SJohn Baldwin# nda:	CAM NVMe disk driver
16848f7105a2SJohn Baldwin# nvd:	non-CAM NVMe disk driver
16858f7105a2SJohn Baldwin
1686a1eda741SJohn Baldwindevice		nvme		# PCI-express NVMe host driver
16878f7105a2SJohn Baldwinoptions 	NVME_USE_NVD=1	# Use nvd(4) instead of the CAM nda(4) driver
1688a1eda741SJohn Baldwindevice		nvmf		# NVMeoF host driver
1689a15f7c96SJohn Baldwindevice		nvmft		# NVMeoF ctl(4) frontend
169059144db3SJohn Baldwindevice		nvmf_tcp	# NVMeoF TCP transport
16918f7105a2SJohn Baldwindevice		nda		# NVMe direct access devices (aka disks)
16928f7105a2SJohn Baldwindevice		nvd		# expose NVMe namespaces as disks, depends on nvme
16938f7105a2SJohn Baldwin
16946e818956SDavid E. O'Brien#
1695e19ef875SAlexander Motin# Serial ATA host controllers:
1696e19ef875SAlexander Motin#
1697e19ef875SAlexander Motin# ahci: Advanced Host Controller Interface (AHCI) compatible
1698dd48af36SAlexander Motin# mvs:  Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
1699e19ef875SAlexander Motin# siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
17001a00526bSAlexander Motin#
17011a00526bSAlexander Motin# These drivers are part of cam(4) subsystem. They supersede less featured
17021a00526bSAlexander Motin# ata(4) subsystem drivers, supporting same hardware.
1703e19ef875SAlexander Motin
1704a508f5d9SJohn Baldwindevice		ahci		# AHCI-compatible SATA controllers
1705a508f5d9SJohn Baldwindevice		mvs		# Marvell 88SX50XX/88SX60XX/88SX70XX/SoC SATA
1706a508f5d9SJohn Baldwindevice		siis		# SiliconImage SiI3124/SiI3132/SiI3531 SATA
1707a508f5d9SJohn Baldwindevice		ada		# ATA/SATA direct access devices (aka disks)
1708e19ef875SAlexander Motin
1709e19ef875SAlexander Motin#
171045f6d665SAlexander Motin# The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
171145f6d665SAlexander Motin# PC Card devices. You only need one "device ata" for it to find all
17126d04301dSAlexander Langer# PCI and PC Card ATA/ATAPI devices on modern machines.
1713c4bda3c6SAlexander Motin# Alternatively, individual bus and chipset drivers may be chosen by using
1714c4bda3c6SAlexander Motin# the 'atacore' driver then selecting the drivers on a per vendor basis.
1715c4bda3c6SAlexander Motin# For example to build a system which only supports a VIA chipset,
1716c4bda3c6SAlexander Motin# omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
1717a508f5d9SJohn Baldwindevice		ata		# Legacy ATA/SATA controllers
1718c4bda3c6SAlexander Motin
1719c4bda3c6SAlexander Motin# Modular ATA
1720c4bda3c6SAlexander Motin#device		atacore		# Core ATA functionality
1721c4bda3c6SAlexander Motin#device		ataisa		# ISA bus support
1722c4bda3c6SAlexander Motin#device		atapci		# PCI bus support; only generic chipset support
1723c4bda3c6SAlexander Motin
1724c4bda3c6SAlexander Motin# PCI ATA chipsets
1725c4bda3c6SAlexander Motin#device		ataacard	# ACARD
1726c4bda3c6SAlexander Motin#device		ataacerlabs	# Acer Labs Inc. (ALI)
1727c4bda3c6SAlexander Motin#device		ataamd		# American Micro Devices (AMD)
1728c4bda3c6SAlexander Motin#device		ataati		# ATI
1729c4bda3c6SAlexander Motin#device		atacenatek	# Cenatek
1730c4bda3c6SAlexander Motin#device		atacypress	# Cypress
1731c4bda3c6SAlexander Motin#device		atacyrix	# Cyrix
1732c4bda3c6SAlexander Motin#device		atahighpoint	# HighPoint
1733c4bda3c6SAlexander Motin#device		ataintel	# Intel
1734c4bda3c6SAlexander Motin#device		ataite		# Integrated Technology Inc. (ITE)
1735c4bda3c6SAlexander Motin#device		atajmicron	# JMicron
1736c4bda3c6SAlexander Motin#device		atamarvell	# Marvell
1737c4bda3c6SAlexander Motin#device		atamicron	# Micron
1738c4bda3c6SAlexander Motin#device		atanational	# National
1739c4bda3c6SAlexander Motin#device		atanetcell	# NetCell
1740c4bda3c6SAlexander Motin#device		atanvidia	# nVidia
1741c4bda3c6SAlexander Motin#device		atapromise	# Promise
1742c4bda3c6SAlexander Motin#device		ataserverworks	# ServerWorks
1743c4bda3c6SAlexander Motin#device		atasiliconimage	# Silicon Image Inc. (SiI) (formerly CMD)
1744c4bda3c6SAlexander Motin#device		atasis		# Silicon Integrated Systems Corp.(SiS)
1745c4bda3c6SAlexander Motin#device		atavia		# VIA Technologies Inc.
1746c4bda3c6SAlexander Motin
17478b89ef0aSSøren Schmidt#
17486d04301dSAlexander Langer# For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1749f9ba2bbeSWarner Loshenvvar		hint.ata.0.at="isa"
1750f9ba2bbeSWarner Loshenvvar		hint.ata.0.port="0x1f0"
1751f9ba2bbeSWarner Loshenvvar		hint.ata.0.irq="14"
1752f9ba2bbeSWarner Loshenvvar		hint.ata.1.at="isa"
1753f9ba2bbeSWarner Loshenvvar		hint.ata.1.port="0x170"
1754f9ba2bbeSWarner Loshenvvar		hint.ata.1.irq="15"
17556d04301dSAlexander Langer
17566d04301dSAlexander Langer#
1757339ef827SMitchell Horne# uart: generic driver for serial interfaces.
1758c8956b36SMarcel Moolenaar#
1759501ef98fSMarcel Moolenaardevice		uart
1760501ef98fSMarcel Moolenaar
17618194412bSMarcel Moolenaar# Options for uart(4)
17628194412bSMarcel Moolenaaroptions 	UART_PPS_ON_CTS		# Do time pulse capturing using CTS
17638194412bSMarcel Moolenaar					# instead of DCD.
17641662b008SIan Leporeoptions 	UART_POLL_FREQ		# Set polling rate, used when hw has
17651662b008SIan Lepore					# no interrupt support (50 Hz default).
17668194412bSMarcel Moolenaar
1767501ef98fSMarcel Moolenaar# The following hint should only be used for pure ISA devices.  It is not
1768501ef98fSMarcel Moolenaar# needed otherwise.  Use of hints is strongly discouraged.
1769f9ba2bbeSWarner Loshenvvar		hint.uart.0.at="isa"
1770501ef98fSMarcel Moolenaar
1771c8956b36SMarcel Moolenaar# The following 3 hints are used when the UART is a system device (i.e., a
1772c8956b36SMarcel Moolenaar# console or debug port), but only on platforms that don't have any other
1773c8956b36SMarcel Moolenaar# means to pass the information to the kernel.  The unit number of the hint
1774c8956b36SMarcel Moolenaar# is only used to bundle the hints together.  There is no relation to the
1775c8956b36SMarcel Moolenaar# unit number of the probed UART.
1776f9ba2bbeSWarner Loshenvvar		hint.uart.0.port="0x3f8"
1777f9ba2bbeSWarner Loshenvvar		hint.uart.0.flags="0x10"
1778f9ba2bbeSWarner Loshenvvar		hint.uart.0.baud="115200"
1779501ef98fSMarcel Moolenaar
1780339ef827SMitchell Horne# `flags' for serial drivers that support consoles, like uart(4):
1781c8956b36SMarcel Moolenaar#	0x10	enable console support for this unit.  Other console flags
1782c8956b36SMarcel Moolenaar#		(if applicable) are ignored unless this is set.  Enabling
1783c8956b36SMarcel Moolenaar#		console support does not make the unit the preferred console.
1784339ef827SMitchell Horne#		Boot with -h or set boot_serial=YES in the loader.
1785c8956b36SMarcel Moolenaar#		Currently, at most one unit can have console support; the
1786c8956b36SMarcel Moolenaar#		first one (in config file order) with this flag set is
1787339ef827SMitchell Horne#		preferred.
1788c8956b36SMarcel Moolenaar#	0x80	use this port for serial line gdb support in ddb.  Also known
1789c8956b36SMarcel Moolenaar#		as debug port.
17909546766aSBruce Evans#
17919546766aSBruce Evans
1792501ef98fSMarcel Moolenaar# Options for serial drivers that support consoles:
179391ed2fecSJohn-Mark Gurneyoptions 	BREAK_TO_DEBUGGER	# A BREAK/DBG on the console goes to
1794c8956b36SMarcel Moolenaar					# ddb, if available.
17956a8d6623SGarrett Wollman
179626b6ea69SPaul Saab# Solaris implements a new BREAK which is initiated by a character
179726b6ea69SPaul Saab# sequence CR ~ ^b which is similar to a familiar pattern used on
17989c0ef6d5SOliver Fromme# Sun servers by the Remote Console.  There are FreeBSD extensions:
1799c7b3d8e2SMaxim Konovalov# CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
180026b6ea69SPaul Saaboptions 	ALT_BREAK_TO_DEBUGGER
180126b6ea69SPaul Saab
1802af2e25a6SMarcel Moolenaar# Serial Communications Controller
1803b63eeef4SMarius Strobl# Supports the Freescale/NXP QUad Integrated and Zilog Z8530 multi-channel
1804b63eeef4SMarius Strobl# communications controllers.
1805af2e25a6SMarcel Moolenaardevice		scc
1806af2e25a6SMarcel Moolenaar
18079c564b6cSJohn Hay# PCI Universal Communications driver
180864220a7eSMarcel Moolenaar# Supports various multi port PCI I/O cards.
18099c564b6cSJohn Haydevice		puc
18109c564b6cSJohn Hay
18116a8d6623SGarrett Wollman#
1812d61e6649SAlexander Langer# Network interfaces:
18136a8d6623SGarrett Wollman#
1814dfd77572SJohn Baldwin# MII bus support is required for many PCI Ethernet NICs,
1815d61e6649SAlexander Langer# namely those which use MII-compliant transceivers or implement
18163c7c6c12SMike Pritchard# transceiver control interfaces that operate like an MII.  Adding
18178c1093fcSMarius Strobl# "device miibus" to the kernel config pulls in support for the generic
1818efd0fdfeSGordon Bergling# miibus API, the common support for bit-bang'ing the MII and all
18198c1093fcSMarius Strobl# of the PHY drivers, including a generic one for PHYs that aren't
18208c1093fcSMarius Strobl# specifically handled by an individual driver.  Support for specific
18218c1093fcSMarius Strobl# PHYs may be built by adding "device mii", "device mii_bitbang" if
18228c1093fcSMarius Strobl# needed by the NIC driver and then adding the appropriate PHY driver.
1823dfd77572SJohn Baldwindevice  	mii		# Minimal MII support
18248c1093fcSMarius Strobldevice  	mii_bitbang	# Common module for bit-bang'ing the MII
18258c1093fcSMarius Strobldevice  	miibus		# MII support w/ bit-bang'ing and all PHYs
1826dfd77572SJohn Baldwin
1827dfd77572SJohn Baldwindevice  	acphy		# Altima Communications AC101
1828dfd77572SJohn Baldwindevice  	amphy		# AMD AM79c873 / Davicom DM910{1,2}
1829dfd77572SJohn Baldwindevice  	atphy		# Attansic/Atheros F1
1830dfd77572SJohn Baldwindevice  	axphy		# Asix Semiconductor AX88x9x
1831dfd77572SJohn Baldwindevice  	bmtphy		# Broadcom BCM5201/BCM5202 and 3Com 3c905C
1832d933e97fSStephen Hurddevice		bnxt		# Broadcom NetXtreme-C/NetXtreme-E
1833dfd77572SJohn Baldwindevice  	brgphy		# Broadcom BCM54xx/57xx 1000baseTX
183478c1387fSIan Leporedevice  	cgem		# Cadence GEM Gigabit Ethernet
1835dfd77572SJohn Baldwindevice  	ciphy		# Cicada/Vitesse CS/VSC8xxx
1836dfd77572SJohn Baldwindevice  	e1000phy	# Marvell 88E1000 1000/100/10-BT
1837dfd77572SJohn Baldwindevice  	gentbi		# Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
1838dfd77572SJohn Baldwindevice  	icsphy		# ICS ICS1889-1893
1839dfd77572SJohn Baldwindevice  	ip1000phy	# IC Plus IP1000A/IP1001
1840dfd77572SJohn Baldwindevice  	jmphy		# JMicron JMP211/JMP202
1841dfd77572SJohn Baldwindevice  	lxtphy		# Level One LXT-970
1842dfd77572SJohn Baldwindevice  	nsgphy		# NatSemi DP8361/DP83865/DP83891
1843dfd77572SJohn Baldwindevice  	nsphy		# NatSemi DP83840A
1844dfd77572SJohn Baldwindevice  	nsphyter	# NatSemi DP83843/DP83815
1845dfd77572SJohn Baldwindevice  	pnaphy		# HomePNA
1846dfd77572SJohn Baldwindevice  	qsphy		# Quality Semiconductor QS6612
1847e6713fe5SPyun YongHyeondevice  	rdcphy		# RDC Semiconductor R6040
1848dfd77572SJohn Baldwindevice  	rgephy		# RealTek 8169S/8110S/8211B/8211C
1849dfd77572SJohn Baldwindevice  	rlphy		# RealTek 8139
1850dfd77572SJohn Baldwindevice  	rlswitch	# RealTek 8305
1851dfd77572SJohn Baldwindevice  	smcphy		# SMSC LAN91C111
1852dfd77572SJohn Baldwindevice  	tdkphy		# TDK 89Q2120
1853dfd77572SJohn Baldwindevice  	truephy		# LSI TruePHY
1854dfd77572SJohn Baldwindevice		xmphy		# XaQti XMAC II
1855d61e6649SAlexander Langer
1856ba26d470SStanislav Sedov# ae:   Support for gigabit ethernet adapters based on the Attansic/Atheros
1857ba26d470SStanislav Sedov#       L2 PCI-Express FastEthernet controllers.
1858cfef026aSPyun YongHyeon# age:  Support for gigabit ethernet adapters based on the Attansic/Atheros
1859cfef026aSPyun YongHyeon#       L1 PCI express gigabit ethernet controllers.
1860d68875ebSPyun YongHyeon# alc:  Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
18613c6e15bcSPyun YongHyeon# ale:  Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
1862390cee87SJohn Baldwin# ath:  Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
1863343ed0a8SJohn Baldwin# bce:	Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
1864343ed0a8SJohn Baldwin#       adapters.
1865343ed0a8SJohn Baldwin# bfe:	Broadcom BCM4401 Ethernet adapter.
186695d67482SBill Paul# bge:	Support for gigabit ethernet adapters based on the Broadcom
1867586d7c2eSJohn Polstra#	BCM570x family of controllers, including the 3Com 3c996-T,
1868586d7c2eSJohn Polstra#	the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1869586d7c2eSJohn Polstra#	the embedded gigE NICs on Dell PowerEdge 2550 servers.
1870d933e97fSStephen Hurd# bnxt:	Broadcom NetXtreme-C and NetXtreme-E PCIe 10/25/50G Ethernet adapters.
18714e400768SDavid Christensen# bxe:	Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
1872dd46ab31SDavid Christensen#       adapters.
18733132ad0dSWarner Losh# bwi:	Broadcom BCM430* and BCM431* family of wireless adapters.
1874eb5ef23cSWeongyo Jeong# bwn:	Broadcom BCM43xx family of wireless adapters.
1875119051cbSMarius Strobl# cas:	Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
1876ca7fe84aSNavdeep Parhar# cxgb: Chelsio T3 based 1GbE/10GbE PCIe Ethernet adapters.
1877a74031a5SJohn Baldwin# cxgbe:Chelsio T4, T5, and T6-based 1/10/25/40/100GbE PCIe Ethernet
187824957938SJohn Baldwin#	adapters.
187924957938SJohn Baldwin# cxgbev: Chelsio T4, T5, and T6-based PCIe Virtual Functions.
1880d61e6649SAlexander Langer# dc:   Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1881d61e6649SAlexander Langer#       and various workalikes including:
1882d61e6649SAlexander Langer#       the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1883d61e6649SAlexander Langer#       AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1884d61e6649SAlexander Langer#       82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1885d61e6649SAlexander Langer#       and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1886d61e6649SAlexander Langer#       replaces the old al, ax, dm, pn and mx drivers.  List of brands:
1887d61e6649SAlexander Langer#       Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1888d61e6649SAlexander Langer#       SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1889d61e6649SAlexander Langer#       LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1890d61e6649SAlexander Langer#       KNE110TX.
1891a59716d2SPrafulla Deuskar# em:   Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1892d61e6649SAlexander Langer# fxp:  Intel EtherExpress Pro/100B
1893cf87044eSMatt Jacob#	(hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
18941ed3fed7SMarius Strobl# gem:  Apple GMAC/Sun ERI/Sun GEM
189575a1bf5fSPyun YongHyeon# jme:  JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
189644ac0964SMarius Strobl# le:   AMD Am7900 LANCE and Am79C9xx PCnet
1897c678bc4fSBill Paul# lge:	Support for PCI gigabit ethernet adapters based on the Level 1
1898c678bc4fSBill Paul#	LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1899c678bc4fSBill Paul#	SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1900f173c2b7SSean Bruno# lio:  Support for Cavium 23XX Ethernet adapters
1901d1f25d5dSBernhard Schmidt# malo: Marvell Libertas wireless NICs.
1902d1f25d5dSBernhard Schmidt# mwl:  Marvell 88W8363 802.11n wireless NICs.
1903778eefa4SJohn Baldwin#	Requires the mwl firmware module
1904778eefa4SJohn Baldwin# mwlfw: Marvell 88W8363 firmware
1905c9d21ce9SPyun YongHyeon# msk:	Support for gigabit ethernet adapters based on the Marvell/SysKonnect
1906c9d21ce9SPyun YongHyeon#	Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
1907c9d21ce9SPyun YongHyeon#	88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
1908c9d21ce9SPyun YongHyeon#	88E8055, 88E8056 and D-Link 560T/550SX.
1909c9c8bf05SHans Petter Selasky# mlxfw: Mellanox firmware update module.
191022f2c49aSHans Petter Selasky# mlx5:	Mellanox ConnectX-4 and ConnectX-4 LX IB and Eth shared code module.
191122f2c49aSHans Petter Selasky# mlx5en:Mellanox ConnectX-4 and ConnectX-4 LX PCIe Ethernet adapters.
1912d3d67116SMaxim Sobolev# my:	Myson Fast Ethernet (MTD80X, MTD89X)
1913ce4946daSBill Paul# nge:	Support for PCI gigabit ethernet adapters based on the National
1914ce4946daSBill Paul#	Semiconductor DP83820 and DP83821 chipset. This includes the
1915ce4946daSBill Paul#	SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
1916cc2824b8SBjoern A. Zeeb#	GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
1917cc2824b8SBjoern A. Zeeb#	EP-320G-TX and the Netgear GA622T.
19182f345d8eSLuigi Rizzo# oce:	Emulex 10 Gbit adapters (OneConnect Ethernet)
1919390cee87SJohn Baldwin# ral:	Ralink Technology IEEE 802.11 wireless adapter
19200587cad8SPyun YongHyeon# re:   RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
1921d61e6649SAlexander Langer# rl:   Support for PCI fast ethernet adapters based on the RealTek 8129/8139
1922d61e6649SAlexander Langer#       chipset.  Note that the RealTek driver defaults to using programmed
1923d61e6649SAlexander Langer#       I/O to do register accesses because memory mapped mode seems to cause
1924d61e6649SAlexander Langer#       severe lockups on SMP hardware.  This driver also supports the
1925d61e6649SAlexander Langer#       Accton EN1207D `Cheetah' adapter, which uses a chip called
1926d61e6649SAlexander Langer#       the MPX 5030/5038, which is either a RealTek in disguise or a
1927d61e6649SAlexander Langer#       RealTek workalike.  Note that the D-Link DFE-530TX+ uses the RealTek
1928d61e6649SAlexander Langer#       chipset and is supported by this driver, not the 'vr' driver.
1929b38b13d8SKevin Lo# rtwn: RealTek wireless adapters.
1930b38b13d8SKevin Lo# rtwnfw: RealTek wireless firmware.
1931d193ed0bSPyun YongHyeon# sge:  Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
1932b2ca5572SAlexander Langer# sis:  Support for NICs based on the Silicon Integrated Systems SiS 900,
1933b2ca5572SAlexander Langer#       SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
1934d61e6649SAlexander Langer# sk:   Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
1935d61e6649SAlexander Langer#       This includes the SK-9841 and SK-9842 single port cards (single mode
1936d61e6649SAlexander Langer#       and multimode fiber) and the SK-9843 and SK-9844 dual port cards
1937d61e6649SAlexander Langer#       (also single mode and multimode).
1938d61e6649SAlexander Langer#       The driver will autodetect the number of ports on the card and
1939d61e6649SAlexander Langer#       attach each one as a separate network interface.
1940d61e6649SAlexander Langer# ste:  Sundance Technologies ST201 PCI fast ethernet controller, includes
1941d61e6649SAlexander Langer#       the D-Link DFE-550TX.
1942d497bdf1SPyun YongHyeon# stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
1943d497bdf1SPyun YongHyeon#       TC9021 family of controllers, including the Sundance ST2021/ST2023,
1944d497bdf1SPyun YongHyeon#       the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
1945d61e6649SAlexander Langer# ti:   Support for PCI gigabit ethernet NICs based on the Alteon Networks
1946d61e6649SAlexander Langer#       Tigon 1 and Tigon 2 chipsets.  This includes the Alteon AceNIC, the
1947c86eb67fSDmitry Morozovsky#       3Com 3c985, the Netgear GA620 and various others.  Note that you will
1948c86eb67fSDmitry Morozovsky#       probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
1949d61e6649SAlexander Langer# vr:   Support for various fast ethernet adapters based on the VIA
1950d61e6649SAlexander Langer#       Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
1951e83bcc01SGavin Atkinson#       including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
1952e83bcc01SGavin Atkinson#       DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
19532608aefcSPyun YongHyeon# vte:  DM&P Vortex86 RDC R6040 Fast Ethernet
1954d61e6649SAlexander Langer# xl:   Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
1955d61e6649SAlexander Langer#       Etherlink XL cards and integrated controllers.  This includes the
1956d61e6649SAlexander Langer#       integrated 3c905B-TX chips in certain Dell Optiplex and Dell
1957d61e6649SAlexander Langer#       Precision desktop machines and the integrated 3c905-TX chips
1958d61e6649SAlexander Langer#       in Dell Latitude laptop docking stations.
1959d61e6649SAlexander Langer#       Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
1960d61e6649SAlexander Langer
1961d61e6649SAlexander Langer# PCI Ethernet NICs that use the common MII bus controller code.
1962ba26d470SStanislav Sedovdevice		ae		# Attansic/Atheros L2 FastEthernet
1963cfef026aSPyun YongHyeondevice		age		# Attansic/Atheros L1 Gigabit Ethernet
1964d68875ebSPyun YongHyeondevice		alc		# Atheros AR8131/AR8132 Ethernet
19653c6e15bcSPyun YongHyeondevice		ale		# Atheros AR8121/AR8113/AR8114 Ethernet
1966343ed0a8SJohn Baldwindevice		bce		# Broadcom BCM5706/BCM5708 Gigabit Ethernet
1967343ed0a8SJohn Baldwindevice		bfe		# Broadcom BCM440x 10/100 Ethernet
1968343ed0a8SJohn Baldwindevice		bge		# Broadcom BCM570xx Gigabit Ethernet
1969119051cbSMarius Strobldevice		cas		# Sun Cassini/Cassini+ and NS DP83065 Saturn
1970d61e6649SAlexander Langerdevice		dc		# DEC/Intel 21143 and various workalikes
19714d52a575SXin LIdevice		et		# Agere ET1310 10/100/Gigabit Ethernet
19724664a8d5SJonathan Lemondevice		fxp		# Intel EtherExpress PRO/100B (82557, 82558)
1973f9ba2bbeSWarner Loshenvvar		hint.fxp.0.prefer_iomap="0"
19741ed3fed7SMarius Strobldevice		gem		# Apple GMAC/Sun ERI/Sun GEM
19750587cad8SPyun YongHyeondevice		jme		# JMicron JMC250 Gigabit/JMC260 Fast Ethernet
1976343ed0a8SJohn Baldwindevice		lge		# Level 1 LXT1001 gigabit Ethernet
19775a73a6c1SWarner Loshdevice		lio		# Support for Cavium 23XX Ethernet adapters
1978c9c8bf05SHans Petter Selaskydevice		mlxfw		# Mellanox firmware update module
197922f2c49aSHans Petter Selaskydevice		mlx5		# Shared code module between IB and Ethernet
198022f2c49aSHans Petter Selaskydevice		mlx5en		# Mellanox ConnectX-4 and ConnectX-4 LX
19810587cad8SPyun YongHyeondevice		msk		# Marvell/SysKonnect Yukon II Gigabit Ethernet
1982d3d67116SMaxim Sobolevdevice		my		# Myson Fast Ethernet (MTD80X, MTD89X)
1983343ed0a8SJohn Baldwindevice		nge		# NatSemi DP83820 gigabit Ethernet
19840587cad8SPyun YongHyeondevice		re		# RealTek 8139C+/8169/8169S/8110S
1985d61e6649SAlexander Langerdevice		rl		# RealTek 8129/8139
1986d193ed0bSPyun YongHyeondevice		sge		# Silicon Integrated Systems SiS190/191
1987d61e6649SAlexander Langerdevice		sis		# Silicon Integrated Systems SiS 900/SiS 7016
1988343ed0a8SJohn Baldwindevice		sk		# SysKonnect SK-984x & SK-982x gigabit Ethernet
1989d61e6649SAlexander Langerdevice		ste		# Sundance ST201 (D-Link DFE-550TX)
19900587cad8SPyun YongHyeondevice		stge		# Sundance/Tamarack TC9021 gigabit Ethernet
1991d61e6649SAlexander Langerdevice		vr		# VIA Rhine, Rhine II
19922608aefcSPyun YongHyeondevice		vte		# DM&P Vortex86 RDC R6040 Fast Ethernet
1993d61e6649SAlexander Langerdevice		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')
1994d61e6649SAlexander Langer
1995c75f49f7SKonstantin Belousov# PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
1996c75f49f7SKonstantin Belousovdevice		iflib
1997c75f49f7SKonstantin Belousovdevice		em		# Intel Pro/1000 Gigabit Ethernet
1998c75f49f7SKonstantin Belousovdevice		ix		# Intel Pro/10Gbe PCIE Ethernet
1999c75f49f7SKonstantin Belousovdevice		ixv		# Intel Pro/10Gbe PCIE Ethernet VF
2000c75f49f7SKonstantin Belousov
2001d61e6649SAlexander Langer# PCI Ethernet NICs.
20027f687043SJohn Baldwindevice		cxgb		# Chelsio T3 10 Gigabit Ethernet
20037f687043SJohn Baldwindevice		cxgb_t3fw	# Chelsio T3 10 Gigabit Ethernet firmware
2004a74031a5SJohn Baldwindevice		cxgbe		# Chelsio T4-T6 1/10/25/40/100 Gigabit Ethernet
2005a74031a5SJohn Baldwindevice		cxgbev		# Chelsio T4-T6 Virtual Functions
200644ac0964SMarius Strobldevice		le		# AMD Am7900 LANCE and Am79C9xx PCnet
2007f9ae0280SAndrew Gallatindevice		mxge		# Myricom Myri-10G 10GbE NIC
20082f345d8eSLuigi Rizzodevice		oce		# Emulex 10 GbE (OneConnect Ethernet)
20096e535f6eSRemko Lodderdevice		ti		# Alteon Networks Tigon I/II gigabit Ethernet
2010d61e6649SAlexander Langer
2011390cee87SJohn Baldwin# PCI IEEE 802.11 Wireless NICs
2012390cee87SJohn Baldwindevice		ath		# Atheros pci/cardbus NIC's
2013390cee87SJohn Baldwindevice		ath_hal		# pci/cardbus chip support
2014390cee87SJohn Baldwin#device		ath_ar5210	# AR5210 chips
2015390cee87SJohn Baldwin#device		ath_ar5211	# AR5211 chips
2016390cee87SJohn Baldwin#device		ath_ar5212	# AR5212 chips
2017390cee87SJohn Baldwin#device		ath_rf2413
2018390cee87SJohn Baldwin#device		ath_rf2417
2019390cee87SJohn Baldwin#device		ath_rf2425
2020390cee87SJohn Baldwin#device		ath_rf5111
2021390cee87SJohn Baldwin#device		ath_rf5112
2022390cee87SJohn Baldwin#device		ath_rf5413
2023390cee87SJohn Baldwin#device		ath_ar5416	# AR5416 chips
2024bc391cb2SWarner Losh# All of the AR5212 parts have a problem when paired with the AR71xx
2025bc391cb2SWarner Losh# CPUS.  These parts have a bug that triggers a fatal bus error on the AR71xx
2026bc391cb2SWarner Losh# only.  Details of the exact nature of the bug are sketchy, but some can be
2027bc391cb2SWarner Losh# found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
2028bc391cb2SWarner Losh# 6.  This option enables this workaround.  There is a performance penalty
2029bc391cb2SWarner Losh# for this work around, but without it things don't work at all.  The DMA
2030bc391cb2SWarner Losh# from the card usually bursts 128 bytes, but on the affected CPUs, only
2031bc391cb2SWarner Losh# 4 are safe.
2032bc391cb2SWarner Loshoptions    	AH_RXCFG_SDMAMW_4BYTES
2033390cee87SJohn Baldwin#device		ath_ar9160	# AR9160 chips
2034390cee87SJohn Baldwin#device		ath_ar9280	# AR9280 chips
203558c4a5a1SRui Paulo#device		ath_ar9285	# AR9285 chips
2036390cee87SJohn Baldwindevice		ath_rate_sample	# SampleRate tx rate control for ath
2037390cee87SJohn Baldwindevice		bwi		# Broadcom BCM430* BCM431*
2038eb5ef23cSWeongyo Jeongdevice		bwn		# Broadcom BCM43xx
2039d1f25d5dSBernhard Schmidtdevice		malo		# Marvell Libertas wireless NICs.
2040d1f25d5dSBernhard Schmidtdevice		mwl		# Marvell 88W8363 802.11n wireless NICs.
2041778eefa4SJohn Baldwindevice		mwlfw
2042390cee87SJohn Baldwindevice		ral		# Ralink Technology RT2500 wireless NICs.
2043b38b13d8SKevin Lodevice		rtwn		# Realtek wireless NICs
2044b38b13d8SKevin Lodevice		rtwnfw
2045390cee87SJohn Baldwin
204610a4360cSPyun YongHyeon# Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
204710a4360cSPyun YongHyeon#options 	TI_SF_BUF_JUMBO
204898cb733cSKenneth D. Merry# Turn on the header splitting option for the ti(4) driver firmware.  This
204998cb733cSKenneth D. Merry# only works for Tigon II chips, and has no effect for Tigon I chips.
205010a4360cSPyun YongHyeon# This option requires the TI_SF_BUF_JUMBO option above.
2051b590f210SPyun YongHyeon#options 	TI_JUMBO_HDRSPLIT
205298cb733cSKenneth D. Merry
20532c8f5a28SKenneth D. Merry# These two options allow manipulating the mbuf cluster size and mbuf size,
20542c8f5a28SKenneth D. Merry# respectively.  Be very careful with NIC driver modules when changing
20552c8f5a28SKenneth D. Merry# these from their default values, because that can potentially cause a
20562c8f5a28SKenneth D. Merry# mismatch between the mbuf size assumed by the kernel and the mbuf size
20572c8f5a28SKenneth D. Merry# assumed by a module.  The only driver that currently has the ability to
20582c8f5a28SKenneth D. Merry# detect a mismatch is ti(4).
2059465988e9SMark Johnstonoptions 	MCLSHIFT=11	# mbuf cluster shift in bits, 11 == 2KB
2060b0b0e4eeSMark Johnstonoptions 	MSIZE=256	# mbuf size in bytes
20612c8f5a28SKenneth D. Merry
2062c19da41eSPeter Wemm#
20630739ea1dSSeigo Tanimura# Sound drivers
2064c19da41eSPeter Wemm#
20650739ea1dSSeigo Tanimura# sound: The generic sound driver.
2066c7406082SJohn-Mark Gurney#
20670739ea1dSSeigo Tanimura
20680739ea1dSSeigo Tanimuradevice		sound
20690739ea1dSSeigo Tanimura
20700739ea1dSSeigo Tanimura#
20710739ea1dSSeigo Tanimura# snd_*: Device-specific drivers.
2072c7406082SJohn-Mark Gurney#
20739c0ef6d5SOliver Fromme# The flags of the device tell the device a bit more info about the
20747f5092f3SJohn Baldwin# device that normally is obtained through the PnP interface.
20757f5092f3SJohn Baldwin#	bit  2..0   secondary DMA channel;
20767f5092f3SJohn Baldwin#	bit  4      set if the board uses two dma channels;
20777f5092f3SJohn Baldwin#	bit 15..8   board type, overrides autodetection; leave it
20787f5092f3SJohn Baldwin#		    zero if don't know what to put in (and you don't,
20797f5092f3SJohn Baldwin#		    since this is unsupported at the moment...).
20807f5092f3SJohn Baldwin#
20810739ea1dSSeigo Tanimura# snd_als4000:		Avance Logic ALS4000 PCI.
2082d9bde1adSAriff Abdullah# snd_atiixp:		ATI IXP 200/300/400 PCI.
20830739ea1dSSeigo Tanimura# snd_cmi:		CMedia CMI8338/CMI8738 PCI.
20840739ea1dSSeigo Tanimura# snd_cs4281:		Crystal Semiconductor CS4281 PCI.
20850739ea1dSSeigo Tanimura# snd_csa:		Crystal Semiconductor CS461x/428x PCI. (except
20860739ea1dSSeigo Tanimura#			4281)
20870739ea1dSSeigo Tanimura# snd_emu10k1:		Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
20880fa7ab6aSAlexander Leidinger# snd_emu10kx:		Creative SoundBlaster Live! and Audigy
20899f548240SAlexander Leidinger# snd_envy24:		VIA Envy24 and compatible, needs snd_spicds.
20909f548240SAlexander Leidinger# snd_envy24ht:		VIA Envy24HT and compatible, needs snd_spicds.
20910739ea1dSSeigo Tanimura# snd_es137x:		Ensoniq AudioPCI ES137x PCI.
20920739ea1dSSeigo Tanimura# snd_fm801:		Forte Media FM801 PCI.
20934b8939a1SAriff Abdullah# snd_hda:		Intel High Definition Audio (Controller) and
20944b8939a1SAriff Abdullah#			compatible.
20955687c71dSFlorian Walpen# snd_hdsp:		RME HDSP 9632 and HDSP 9652
2096e4afd792SAlexander Motin# snd_hdspe:		RME HDSPe AIO and RayDAT.
209717470869SAlexander Motin# snd_ich:		Intel ICH AC'97 and some more audio controllers
2098903b2fb9SJoel Dahl#			embedded in a chipset, for example nVidia
2099903b2fb9SJoel Dahl#			nForce controllers.
21000739ea1dSSeigo Tanimura# snd_maestro3:		ESS Technology Maestro-3/Allegro PCI.
21010739ea1dSSeigo Tanimura# snd_neomagic:		Neomagic 256 AV/ZX PCI.
21020739ea1dSSeigo Tanimura# snd_solo:		ESS Solo-1x PCI.
2103de8d750fSJoel Dahl# snd_spicds:		SPI codec driver, needed by Envy24/Envy24HT drivers.
2104903b2fb9SJoel Dahl# snd_t4dwave:		Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
21050739ea1dSSeigo Tanimura#			M5451 PCI.
2106de8d750fSJoel Dahl# snd_uaudio:		USB audio.
21070739ea1dSSeigo Tanimura# snd_via8233:		VIA VT8233x PCI.
21080739ea1dSSeigo Tanimura# snd_via82c686:	VIA VT82C686A PCI.
21090739ea1dSSeigo Tanimura# snd_vibes:		S3 Sonicvibes PCI.
211081bb901eSPeter Wemm
2111f37a929cSPeter Wemmdevice		snd_als4000
2112d9bde1adSAriff Abdullahdevice		snd_atiixp
21130739ea1dSSeigo Tanimuradevice		snd_cmi
2114f37a929cSPeter Wemmdevice		snd_cs4281
21150739ea1dSSeigo Tanimuradevice		snd_csa
2116f37a929cSPeter Wemmdevice		snd_emu10k1
21170fa7ab6aSAlexander Leidingerdevice		snd_emu10kx
2118b1ff0220SAlexander Leidingerdevice		snd_envy24
21199f548240SAlexander Leidingerdevice		snd_envy24ht
2120f37a929cSPeter Wemmdevice		snd_es137x
2121f37a929cSPeter Wemmdevice		snd_fm801
21224b8939a1SAriff Abdullahdevice		snd_hda
21235687c71dSFlorian Walpendevice		snd_hdsp
2124e4afd792SAlexander Motindevice		snd_hdspe
21250739ea1dSSeigo Tanimuradevice		snd_ich
2126f37a929cSPeter Wemmdevice		snd_maestro3
21270739ea1dSSeigo Tanimuradevice		snd_neomagic
21280739ea1dSSeigo Tanimuradevice		snd_solo
21299f548240SAlexander Leidingerdevice		snd_spicds
2130f37a929cSPeter Wemmdevice		snd_t4dwave
2131de8d750fSJoel Dahldevice		snd_uaudio
2132f37a929cSPeter Wemmdevice		snd_via8233
2133f37a929cSPeter Wemmdevice		snd_via82c686
21340739ea1dSSeigo Tanimuradevice		snd_vibes
2135c19da41eSPeter Wemm
21361c9c6382SRuslan Ermilov# For non-PnP sound cards:
2137f9ba2bbeSWarner Loshenvvar		hint.pcm.0.at="isa"
2138f9ba2bbeSWarner Loshenvvar		hint.pcm.0.irq="10"
2139f9ba2bbeSWarner Loshenvvar		hint.pcm.0.drq="1"
2140f9ba2bbeSWarner Loshenvvar		hint.pcm.0.flags="0x0"
2141f9ba2bbeSWarner Loshenvvar		hint.sbc.0.at="isa"
2142f9ba2bbeSWarner Loshenvvar		hint.sbc.0.port="0x220"
2143f9ba2bbeSWarner Loshenvvar		hint.sbc.0.irq="5"
2144f9ba2bbeSWarner Loshenvvar		hint.sbc.0.drq="1"
2145f9ba2bbeSWarner Loshenvvar		hint.sbc.0.flags="0x15"
2146f9ba2bbeSWarner Loshenvvar		hint.gusc.0.at="isa"
2147f9ba2bbeSWarner Loshenvvar		hint.gusc.0.port="0x220"
2148f9ba2bbeSWarner Loshenvvar		hint.gusc.0.irq="5"
2149f9ba2bbeSWarner Loshenvvar		hint.gusc.0.drq="1"
2150f9ba2bbeSWarner Loshenvvar		hint.gusc.0.flags="0x13"
21517f5092f3SJohn Baldwin
21526a8d6623SGarrett Wollman#
215318fe4678SAriff Abdullah# Following options are intended for debugging/testing purposes:
215418fe4678SAriff Abdullah#
215518fe4678SAriff Abdullah# SND_DEBUG                    Enable extra debugging code that includes
215618fe4678SAriff Abdullah#                              sanity checking and possible increase of
215718fe4678SAriff Abdullah#                              verbosity.
215818fe4678SAriff Abdullah#
2159d51e8487SJosh Paetzel# SND_DIAGNOSTIC               Similar in a spirit of INVARIANTS/DIAGNOSTIC,
216018fe4678SAriff Abdullah#                              zero tolerance against inconsistencies.
216118fe4678SAriff Abdullah#
216218fe4678SAriff Abdullah# SND_FEEDER_MULTIFORMAT       By default, only 16/32 bit feeders are compiled
216318fe4678SAriff Abdullah#                              in. This options enable most feeder converters
216418fe4678SAriff Abdullah#                              except for 8bit. WARNING: May bloat the kernel.
216518fe4678SAriff Abdullah#
216618fe4678SAriff Abdullah# SND_FEEDER_FULL_MULTIFORMAT  Ditto, but includes 8bit feeders as well.
216718fe4678SAriff Abdullah#
216818fe4678SAriff Abdullah# SND_FEEDER_RATE_HP           (feeder_rate) High precision 64bit arithmetic
216918fe4678SAriff Abdullah#                              as much as possible (the default trying to
217018fe4678SAriff Abdullah#                              avoid it). Possible slowdown.
217118fe4678SAriff Abdullah#
217218fe4678SAriff Abdullah# SND_PCM_64                   (Only applicable for i386/32bit arch)
217318fe4678SAriff Abdullah#                              Process 32bit samples through 64bit
217418fe4678SAriff Abdullah#                              integer/arithmetic. Slight increase of dynamic
217518fe4678SAriff Abdullah#                              range at a cost of possible slowdown.
217618fe4678SAriff Abdullah#
217718fe4678SAriff Abdullah# SND_OLDSTEREO                Only 2 channels are allowed, effectively
217818fe4678SAriff Abdullah#                              disabling multichannel processing.
217918fe4678SAriff Abdullah#
218018fe4678SAriff Abdullahoptions 	SND_DEBUG
218118fe4678SAriff Abdullahoptions 	SND_DIAGNOSTIC
218218fe4678SAriff Abdullahoptions 	SND_FEEDER_MULTIFORMAT
218318fe4678SAriff Abdullahoptions 	SND_FEEDER_FULL_MULTIFORMAT
218418fe4678SAriff Abdullahoptions 	SND_FEEDER_RATE_HP
218518fe4678SAriff Abdullahoptions 	SND_PCM_64
218618fe4678SAriff Abdullahoptions 	SND_OLDSTEREO
218718fe4678SAriff Abdullah
218818fe4678SAriff Abdullah#
2189b4fba31bSWarner Losh# Cardbus
21906e818956SDavid E. O'Brien#
2191b4fba31bSWarner Losh# cbb: pci/CardBus bridge implementing YENTA interface
2192b4fba31bSWarner Losh# cardbus: CardBus slots
21936e818956SDavid E. O'Briendevice		cbb
21946e818956SDavid E. O'Briendevice		cardbus
21956e818956SDavid E. O'Brien
21966e818956SDavid E. O'Brien#
21975bcb64f2SWarner Losh# MMC/SD
21985bcb64f2SWarner Losh#
2199831f5dcfSAlexander Motin# mmc 		MMC/SD bus
2200831f5dcfSAlexander Motin# mmcsd		MMC/SD memory card
2201831f5dcfSAlexander Motin# sdhci		Generic PCI SD Host Controller
2202926ce35aSJung-uk Kim# rtsx		Realtek SD card reader (RTS5209, RTS5227, ...)
2203831f5dcfSAlexander Motindevice		mmc
2204831f5dcfSAlexander Motindevice		mmcsd
2205831f5dcfSAlexander Motindevice		sdhci
2206926ce35aSJung-uk Kimdevice		rtsx
22075bcb64f2SWarner Losh
22085bcb64f2SWarner Losh#
22098afa373cSNicolas Souchu# SMB bus
22108afa373cSNicolas Souchu#
22113c5656bfSArchie Cobbs# System Management Bus support is provided by the 'smbus' device.
22123c5656bfSArchie Cobbs# Access to the SMBus device is via the 'smb' device (/dev/smb*),
22133c5656bfSArchie Cobbs# which is a child of the 'smbus' device.
22148afa373cSNicolas Souchu#
22158afa373cSNicolas Souchu# Supported devices:
22164d5f30e0SRuslan Ermilov# smb		standard I/O through /dev/smb*
22178afa373cSNicolas Souchu#
22183c5656bfSArchie Cobbs# Supported SMB interfaces:
221928ebb692SNicolas Souchu# iicsmb	I2C to SMB bridge with any iicbus interface
22207f5092f3SJohn Baldwin# intpm		Intel PIIX4 (82371AB, 82443MX) Power Management Unit
22217f5092f3SJohn Baldwin# alpm		Acer Aladdin-IV/V/Pro2 Power Management Unit
22227f5092f3SJohn Baldwin# ichsmb	Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
22237f5092f3SJohn Baldwin# viapm		VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2224b1acc4a2SMurray Stokely# amdpm		AMD 756 Power Management Unit
22254d5f30e0SRuslan Ermilov# amdsmb	AMD 8111 SMBus 2.0 Controller
222644e6ce01SNicolas Souchu# nfpm		NVIDIA nForce Power Management Unit
22274d5f30e0SRuslan Ermilov# nfsmb		NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
22280572ccaaSJim Harris# ismt		Intel SMBus 2.0 controller chips (on Atom S1200, C2000)
22298afa373cSNicolas Souchu#
2230c9953c3bSPeter Wemmdevice		smbus		# Bus support, required for smb below.
22313c5656bfSArchie Cobbs
22327f5092f3SJohn Baldwindevice		intpm
22335ea0b892SJohn Baldwinoptions 	ENABLE_ALART	# Control alarm on Intel intpm driver
22347f5092f3SJohn Baldwindevice		alpm
22357f5092f3SJohn Baldwindevice		ichsmb
22367f5092f3SJohn Baldwindevice		viapm
223744e6ce01SNicolas Souchudevice		amdpm
22384d5f30e0SRuslan Ermilovdevice		amdsmb
223944e6ce01SNicolas Souchudevice		nfpm
22404d5f30e0SRuslan Ermilovdevice		nfsmb
22410572ccaaSJim Harrisdevice		ismt
22427f5092f3SJohn Baldwin
2243c9953c3bSPeter Wemmdevice		smb
22448afa373cSNicolas Souchu
22454afdfe97SAndriy Gapon# SMBus peripheral devices
22468afa373cSNicolas Souchu#
2247dcd935dfSRavi Pokala# jedec_dimm	Asset and temperature reporting for DDR3 and DDR4 DIMMs
22484afdfe97SAndriy Gapon#
2249dcd935dfSRavi Pokaladevice		jedec_dimm
22504afdfe97SAndriy Gapon
22518afa373cSNicolas Souchu# I2C Bus
22528afa373cSNicolas Souchu#
22538afa373cSNicolas Souchu# Philips i2c bus support is provided by the `iicbus' device.
22548afa373cSNicolas Souchu#
22558afa373cSNicolas Souchu# Supported devices:
22568afa373cSNicolas Souchu# ic	i2c network interface
22578afa373cSNicolas Souchu# iic	i2c standard io
2258f7d09fbaSNicolas Souchu# iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
22591ab68cbbSJayachandran C.# iicoc simple polling driver for OpenCores I2C controller
22608afa373cSNicolas Souchu#
226128ebb692SNicolas Souchu# Other:
2262daba5aceSWarner Losh# iicbb	generic I2C bit-banging code (needed by lpbb)
22638afa373cSNicolas Souchu#
2264c9953c3bSPeter Wemmdevice		iicbus		# Bus support, required for ic/iic/iicsmb below.
22656f3bd9a6SIan Leporedevice		iicbb		# bitbang driver; implements i2c on a pair of gpio pins
22668afa373cSNicolas Souchu
2267c9953c3bSPeter Wemmdevice		ic
22686f3bd9a6SIan Leporedevice		iic		# userland access to i2c slave devices via ioctl(8)
2269c9953c3bSPeter Wemmdevice		iicsmb		# smb over i2c bridge
22701ab68cbbSJayachandran C.device		iicoc		# OpenCores I2C controller support
22718afa373cSNicolas Souchu
2272422d05daSIan Lepore# I2C bus multiplexer (mux) devices
2273422d05daSIan Leporedevice		iicmux		# i2c mux core driver
2274422d05daSIan Leporedevice		iic_gpiomux	# i2c mux hardware controlled via gpio pins
2275422d05daSIan Leporedevice		ltc430x		# LTC4305 and LTC4306 i2c mux chips
2276422d05daSIan Lepore
2277286fa445SRafal Jaworowski# I2C peripheral devices
2278286fa445SRafal Jaworowski#
2279ac6a9e47SIan Leporedevice		ad7418		# Analog Devices temp and voltage sensor
22805177d294SIan Leporedevice		ads111x		# Texas Instruments ADS101x and ADS111x ADCs
228146ec180eSIan Leporedevice		ds1307		# Dallas DS1307 RTC and compatible
2282bb2e8108SIan Leporedevice		ds13rtc		# All Dallas/Maxim ds13xx chips
228346ec180eSIan Leporedevice		ds1672		# Dallas DS1672 RTC
228446ec180eSIan Leporedevice		ds3231		# Dallas DS3231 RTC + temperature
2285bf3a3852SBjoern A. Zeebdevice		fan53555	# Fairchild Semi FAN53555/SYR82x Regulator
228646ec180eSIan Leporedevice		icee		# AT24Cxxx and compatible EEPROMs
2287ac6a9e47SIan Leporedevice		isl12xx		# Intersil ISL12xx RTC
228846ec180eSIan Leporedevice		lm75		# LM75 compatible temperature sensor
228946ec180eSIan Leporedevice		nxprtc		# NXP RTCs: PCA/PFC212x PCA/PCF85xx
2290ac6a9e47SIan Leporedevice		rtc8583		# Epson RTC-8583
229146ec180eSIan Leporedevice		s35390a		# Seiko Instruments S-35390A RTC
2292ac6a9e47SIan Leporedevice		sy8106a		# Silergy Corp. SY8106A buck regulator
2293286fa445SRafal Jaworowski
2294ab4c624bSMike Smith# Parallel-Port Bus
2295ab4c624bSMike Smith#
2296ab4c624bSMike Smith# Parallel port bus support is provided by the `ppbus' device.
2297ab4c624bSMike Smith# Multiple devices may be attached to the parallel port, devices
2298ab4c624bSMike Smith# are automatically probed and attached when found.
2299ab4c624bSMike Smith#
2300ab4c624bSMike Smith# Supported devices:
2301fdf94d1aSNicolas Souchu# lpt	Parallel Printer
230246f3ff79SMike Smith# plip	Parallel network interface
2303fdf94d1aSNicolas Souchu# ppi	General-purpose I/O ("Geek Port") + IEEE1284 I/O
2304f7d09fbaSNicolas Souchu# pps	Pulse per second Timing Interface
230528ebb692SNicolas Souchu# lpbb	Philips official parallel port I2C bit-banging interface
23061caef332SWojciech A. Koszek# pcfclock Parallel port clock driver.
2307ab4c624bSMike Smith#
2308ab4c624bSMike Smith# Supported interfaces:
2309ab4c624bSMike Smith# ppc	ISA-bus parallel port interfaces.
2310ab4c624bSMike Smith#
2311ef8f7626SNicolas Souchu
23120f210c92SNicolas Souchuoptions 	PPC_PROBE_CHIPSET # Enable chipset specific detection
23130f210c92SNicolas Souchu				  # (see flags in ppc(4))
23145895e3c8SPeter Wemmoptions 	DEBUG_1284	# IEEE1284 signaling protocol debug
23159d5abbddSJens Schweikhardtoptions 	PERIPH_1284	# Makes your computer act as an IEEE1284
2316ef8f7626SNicolas Souchu				# compliant peripheral
23175895e3c8SPeter Wemmoptions 	DONTPROBE_1284	# Avoid boot detection of PnP parallel devices
23185895e3c8SPeter Wemmoptions 	LPT_DEBUG	# Printer driver debug
23195895e3c8SPeter Wemmoptions 	PPC_DEBUG	# Parallel chipset level debug
23205895e3c8SPeter Wemmoptions 	PLIP_DEBUG	# Parallel network IP interface debug
23213b2d592cSJordan K. Hubbardoptions 	PCFCLOCK_VERBOSE         # Verbose pcfclock driver
23223b2d592cSJordan K. Hubbardoptions 	PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)
2323ef8f7626SNicolas Souchu
2324f71c01ccSPeter Wemmdevice		ppc
2325f9ba2bbeSWarner Loshenvvar		hint.ppc.0.at="isa"
2326f9ba2bbeSWarner Loshenvvar		hint.ppc.0.irq="7"
23270d31b179SPeter Wemmdevice		ppbus
23280d31b179SPeter Wemmdevice		lpt
23290d31b179SPeter Wemmdevice		plip
23300d31b179SPeter Wemmdevice		ppi
23310d31b179SPeter Wemmdevice		pps
23320d31b179SPeter Wemmdevice		lpbb
23330d31b179SPeter Wemmdevice		pcfclock
2334ab4c624bSMike Smith
23356e36309dSIan Lepore# General Purpose I/O pins
2336446e035cSRuslan Bukindevice		dwgpio		# Synopsys DesignWare APB GPIO Controller
23376e36309dSIan Leporedevice  	gpio		# gpio interfaces and bus support
23386e36309dSIan Leporedevice  	gpiobacklight	# sysctl control of gpio-based backlight
23396e36309dSIan Leporedevice  	gpioiic		# i2c via gpio bitbang
23406e36309dSIan Leporedevice  	gpiokeys	# kbd(4) glue for gpio-based key input
23416e36309dSIan Leporedevice  	gpioled		# led(4) gpio glue
23426e36309dSIan Leporedevice  	gpiopower	# event handler for gpio-based powerdown
23436e36309dSIan Leporedevice  	gpiopps		# Pulse per second input from gpio pin
23446e36309dSIan Leporedevice  	gpioregulator	# extres/regulator glue for gpio pin
23456e36309dSIan Leporedevice  	gpiospi		# SPI via gpio bitbang
23466e36309dSIan Leporedevice  	gpioths		# 1-wire temp/humidity sensor on gpio pin
23476e36309dSIan Lepore
23480bab2b6eSIan Lepore# Pulse width modulation
23490bab2b6eSIan Leporedevice  	pwmbus		# pwm interface and bus support
23500bab2b6eSIan Leporedevice  	pwmc		# userland control access to pwm outputs
23510bab2b6eSIan Lepore
2352f45757caSChristian Brueffer#
2353f45757caSChristian Brueffer# Etherswitch framework and drivers
2354f45757caSChristian Brueffer#
2355f45757caSChristian Brueffer# etherswitch	The etherswitch(4) framework
2356f45757caSChristian Brueffer# miiproxy	Proxy device for miibus(4) functionality
2357f45757caSChristian Brueffer#
2358f45757caSChristian Brueffer# Switch hardware support:
2359f45757caSChristian Brueffer# arswitch	Atheros switches
2360f45757caSChristian Brueffer# ip17x 	IC+ 17x family switches
2361f45757caSChristian Brueffer# rtl8366r	Realtek RTL8366 switches
2362f45757caSChristian Brueffer# ukswitch	Multi-PHY switches
2363f45757caSChristian Brueffer#
2364f45757caSChristian Bruefferdevice		etherswitch
2365f45757caSChristian Bruefferdevice		miiproxy
2366f45757caSChristian Bruefferdevice		arswitch
2367f45757caSChristian Bruefferdevice		ip17x
2368f45757caSChristian Bruefferdevice		rtl8366rb
2369f45757caSChristian Bruefferdevice		ukswitch
2370f45757caSChristian Brueffer
23710ac40133SBrian Somers# Kernel BOOTP support
23720ac40133SBrian Somers
23730ac40133SBrian Somersoptions 	BOOTP		# Use BOOTP to obtain IP address/hostname
2374c15882f0SRick Macklem				# Requires NFSCL and NFS_ROOT
23750ac40133SBrian Somersoptions 	BOOTP_NFSROOT	# NFS mount root filesystem using BOOTP info
23760ac40133SBrian Somersoptions 	BOOTP_NFSV3	# Use NFS v3 to NFS mount root
23770ac40133SBrian Somersoptions 	BOOTP_COMPAT	# Workaround for broken bootp daemons.
23780ac40133SBrian Somersoptions 	BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2379eead3ae9SBenno Riceoptions 	BOOTP_BLOCKSIZE=8192 # Override NFS block size
2380432aad0eSTor Egge
2381d94f38acSEivind Eklund#
2382d626b50bSMike Karels# Enable software watchdog routines, even if hardware watchdog is present.
2383d626b50bSMike Karels# By default, software watchdog timer is enabled only if no hardware watchdog
2384d626b50bSMike Karels# is present.
2385370c3cb5SSean Kelly#
23864103b765SPoul-Henning Kampoptions 	SW_WATCHDOG
2387370c3cb5SSean Kelly
2388370c3cb5SSean Kelly#
2389f7829d0dSAttilio Rao# Add the software deadlock resolver thread.
2390f7829d0dSAttilio Rao#
2391f7829d0dSAttilio Raooptions 	DEADLKRES
2392f7829d0dSAttilio Rao
2393f7829d0dSAttilio Rao#
2394b99d6e6fSDavid Schultz# Disable swapping of stack pages.  This option removes all
23954e0ee531SMike Barcroft# code which actually performs swapping, so it's not possible to turn
23964e0ee531SMike Barcroft# it back on at run-time.
2397c796cfa1SAndrzej Bialecki#
2398c796cfa1SAndrzej Bialecki# This is sometimes usable for systems which don't have any swap space
23993c4c0efdSBryan Drewery# (see also sysctl "vm.disable_swapspace_pageouts")
2400c796cfa1SAndrzej Bialecki#
240119dde963SPeter Wemm#options 	NO_SWAPPING
2402c796cfa1SAndrzej Bialecki
24039dab0776SDavid Greenman# Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
24049dab0776SDavid Greenman# for sendfile(2) that are used to map file VM pages, and normally
24059dab0776SDavid Greenman# default to a quantity that is roughly 16*MAXUSERS+512. You would
24069dab0776SDavid Greenman# typically want about 4 of these for each simultaneous file send.
24079dab0776SDavid Greenman#
24085895e3c8SPeter Wemmoptions 	NSFBUFS=1024
24099dab0776SDavid Greenman
241015a1057cSEivind Eklund#
2411053a2b61SEivind Eklund# Enable extra debugging code for locks.  This stores the filename and
24129c0ef6d5SOliver Fromme# line of whatever acquired the lock in the lock itself, and changes a
2413053a2b61SEivind Eklund# number of function calls to pass around the relevant data.  This is
24142c048c4aSBryan Drewery# not at all useful unless you are debugging lock code.  Note that
24152c048c4aSBryan Drewery# modules should be recompiled as this option modifies KBI.
241615a1057cSEivind Eklund#
241715a1057cSEivind Eklundoptions 	DEBUG_LOCKS
241815a1057cSEivind Eklund
24191f678b6bSJohn Baldwin#
24201f678b6bSJohn Baldwin# VirtIO support
24211f678b6bSJohn Baldwin#
24221f678b6bSJohn Baldwin# The virtio entry provides a generic bus for use by the device drivers.
24231f678b6bSJohn Baldwin# It must be combined with an interface that communicates with the host.
24241f678b6bSJohn Baldwin# Multiple such interfaces are defined by the VirtIO specification
24251f678b6bSJohn Baldwin# including PCI and MMIO.
24261f678b6bSJohn Baldwin#
24271f678b6bSJohn Baldwindevice		virtio		# Generic VirtIO bus (required)
24281f678b6bSJohn Baldwindevice		virtio_mmio	# VirtIO MMIO Interface
24291f678b6bSJohn Baldwindevice		virtio_pci	# VirtIO PCI Interface
24301f678b6bSJohn Baldwindevice		vtnet		# VirtIO Ethernet device
24311f678b6bSJohn Baldwindevice		virtio_balloon	# VirtIO Memory Balloon device
24321f678b6bSJohn Baldwindevice		virtio_blk	# VirtIO Block device
24331f678b6bSJohn Baldwindevice		virtio_console	# VirtIO Console device
24341f678b6bSJohn Baldwindevice		virtio_gpu	# VirtIO GPU device
24351f678b6bSJohn Baldwindevice		virtio_random	# VirtIO Entropy device
2436*03248b3fSJohn Baldwindevice		virtio_scmi	# VirtIO SCMI device
2437*03248b3fSJohn Baldwindevice		virtio_scsi	# VirtIO SCSI device
24381f678b6bSJohn Baldwin
2439a898ee51SHans Petter Selasky#####################################################################
24400f0379faSVladimir Kondratyev# HID support
24410f0379faSVladimir Kondratyevdevice		hid		# Generic HID support
24420f0379faSVladimir Kondratyevoptions 	HID_DEBUG	# enable debug msgs
24430f0379faSVladimir Kondratyevdevice		hidbus		# HID bus
24440f0379faSVladimir Kondratyevdevice		hidmap		# HID to evdev mapping
24450f0379faSVladimir Kondratyevdevice		hidraw		# Raw access driver
24460f0379faSVladimir Kondratyevoptions 	HIDRAW_MAKE_UHID_ALIAS	# install /dev/uhid alias
24470f0379faSVladimir Kondratyevdevice		hconf		# Multitouch configuration TLC
24480f0379faSVladimir Kondratyevdevice		hcons		# Consumer controls
24490f0379faSVladimir Kondratyevdevice		hgame		# Generic game controllers
24500f0379faSVladimir Kondratyevdevice		hkbd		# HID keyboard
24510f0379faSVladimir Kondratyevdevice		hms		# HID mouse
24520f0379faSVladimir Kondratyevdevice		hmt		# HID multitouch (MS-compatible)
24530f0379faSVladimir Kondratyevdevice		hpen		# Generic pen driver
24540f0379faSVladimir Kondratyevdevice		hsctrl		# System controls
24550f0379faSVladimir Kondratyevdevice		ps4dshock	# Sony PS4 DualShock 4 gamepad driver
24560f0379faSVladimir Kondratyevdevice		xb360gp		# XBox 360 gamepad driver
2457a898ee51SHans Petter Selasky
245826086a03SPeter Wemm#####################################################################
24591d33cf3dSNick Hibma# USB support
24601d33cf3dSNick Hibma# UHCI controller
2461c9953c3bSPeter Wemmdevice		uhci
24621d33cf3dSNick Hibma# OHCI controller
2463c9953c3bSPeter Wemmdevice		ohci
2464ca3acad1SBernd Walter# EHCI controller
2465ca3acad1SBernd Walterdevice		ehci
2466857508a3SAndrew Thompson# XHCI controller
2467857508a3SAndrew Thompsondevice		xhci
246839e5901eSTakanori Watanabe# SL811 Controller
2469b92755d1SAndrew Thompson#device		slhci
24701d33cf3dSNick Hibma# General USB code (mandatory for USB)
2471c9953c3bSPeter Wemmdevice		usb
24721d33cf3dSNick Hibma#
2473b5ea1f0cSNick Hibma# USB Double Bulk Pipe devices
2474b5ea1f0cSNick Hibmadevice		udbp
24752d45d793SHans Petter Selasky# USB temperature meter
24762d45d793SHans Petter Selaskydevice		ugold
24776bd03b20SKevin Lo# USB LED
24786bd03b20SKevin Lodevice		uled
2479f26c33d2SNick Hibma# Human Interface Device (anything with buttons and dials)
2480c9953c3bSPeter Wemmdevice		uhid
24811d33cf3dSNick Hibma# USB keyboard
2482c9953c3bSPeter Wemmdevice		ukbd
24831d33cf3dSNick Hibma# USB printer
2484c9953c3bSPeter Wemmdevice		ulpt
248531615ef7SRebecca Cran# USB mass storage driver (Requires scbus and da)
2486c9953c3bSPeter Wemmdevice		umass
248731615ef7SRebecca Cran# USB mass storage driver for device-side mode
248831615ef7SRebecca Crandevice		usfs
2489ce17576aSScott Long# USB support for Belkin F5U109 and Magic Control Technology serial adapters
2490ce17576aSScott Longdevice		umct
2491e9fb12d3SNick Hibma# USB modem support
2492e9fb12d3SNick Hibmadevice		umodem
2493f26c33d2SNick Hibma# USB mouse
2494c9953c3bSPeter Wemmdevice		ums
2495eed447b5SHans Petter Selasky# USB touchpad(s)
2496eed447b5SHans Petter Selaskydevice		atp
2497eed447b5SHans Petter Selaskydevice		wsp
2498f25a8a01SGleb Smirnoff# eGalax USB touch screen
2499f25a8a01SGleb Smirnoffdevice		uep
25001c9c6382SRuslan Ermilov# Diamond Rio 500 MP3 player
2501e2dbd15fSNick Hibmadevice		urio
25020f0379faSVladimir Kondratyev# HID-over-USB driver
25030f0379faSVladimir Kondratyevdevice		usbhid
25040f0379faSVladimir Kondratyev
2505d1233ab3SBruce Evans#
2506916e6e02SJosef Karthauser# USB serial support
2507916e6e02SJosef Karthauserdevice		ucom
2508fe75118bSNick Hibma# USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
2509483b9e47SNick Hibmadevice		u3g
25109aab0d96SMaxim Konovalov# USB support for Technologies ARK3116 based serial adapters
25119aab0d96SMaxim Konovalovdevice		uark
2512d1233ab3SBruce Evans# USB support for Belkin F5U103 and compatible serial adapters
2513d1233ab3SBruce Evansdevice		ubsa
251448b68edfSJosef Karthauser# USB support for serial adapters based on the FT8U100AX and FT8U232AM
251548b68edfSJosef Karthauserdevice		uftdi
2516c5286e11STakanori Watanabe# USB support for some Windows CE based serial communication.
2517c5286e11STakanori Watanabedevice		uipaq
251848b68edfSJosef Karthauser# USB support for Prolific PL-2303 serial adapters
2519916e6e02SJosef Karthauserdevice		uplcom
25202e7328e7SRink Springer# USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
25212e7328e7SRink Springerdevice		uslcom
252248b68edfSJosef Karthauser# USB Visor and Palm devices
252348b68edfSJosef Karthauserdevice		uvisor
2524d1233ab3SBruce Evans# USB serial support for DDI pocket's PHS
2525d1233ab3SBruce Evansdevice		uvscom
2526f26c33d2SNick Hibma#
2527ff6b30b9SKevin Lo# USB ethernet support
2528ff6b30b9SKevin Lodevice		uether
2529ed63a7aaSBill Paul# ADMtek USB ethernet. Supports the LinkSys USB100TX,
2530d04bb221SBill Paul# the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2531d04bb221SBill Paul# and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2532d04bb221SBill Paul# eval board.
2533c9953c3bSPeter Wemmdevice		aue
2534bf029145SRobert Watson
2535bf029145SRobert Watson# ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2536bf029145SRobert Watson# LinkSys USB200M and various other adapters.
2537bf029145SRobert Watsondevice		axe
253879eb99dfSLi-Wen Hsu# ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
253979eb99dfSLi-Wen Hsudevice		axge
2540bf029145SRobert Watson
2541dfd1e98eSBill Paul#
25426bcf0032SMaxim Sobolev# Devices which communicate using Ethernet over USB, particularly
25436bcf0032SMaxim Sobolev# Communication Device Class (CDC) Ethernet specification. Supports
25446bcf0032SMaxim Sobolev# Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
25456bcf0032SMaxim Sobolevdevice		cdce
25466bcf0032SMaxim Sobolev#
254701779872SBill Paul# CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
254801779872SBill Paul# and Netmate II, and the Belkin F5U111.
2549c9953c3bSPeter Wemmdevice		cue
255001779872SBill Paul#
2551dfd1e98eSBill Paul# Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2552d04bb221SBill Paul# Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2553d04bb221SBill Paul# 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
255401779872SBill Paul# the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
255501779872SBill Paul# and 2104USB, and the Corega USB-T.
2556c9953c3bSPeter Wemmdevice		kue
255711e04b05SShunsuke Akiyama#
255811e04b05SShunsuke Akiyama# RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
255911e04b05SShunsuke Akiyama# and the GREEN HOUSE GH-USB100B.
256011e04b05SShunsuke Akiyamadevice		rue
2561cdd40f3bSMIHIRA Sanpei Yoshiro#
2562cdd40f3bSMIHIRA Sanpei Yoshiro# Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2563cdd40f3bSMIHIRA Sanpei Yoshirodevice		udav
2564941e2863SAndrew Thompson#
2565a24d62b5SKevin Lo# RealTek RTL8152/RTL8153 USB Ethernet driver
2566e1b74f21SKevin Lodevice		ure
2567e1b74f21SKevin Lo#
256822445463SKevin Lo# Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
256922445463SKevin Lodevice		mos
257022445463SKevin Lo#
2571941e2863SAndrew Thompson# HSxPA devices from Option N.V
2572941e2863SAndrew Thompsondevice		uhso
2573cdd40f3bSMIHIRA Sanpei Yoshiro
257431d98677SRui Paulo# Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
257531d98677SRui Paulodevice		rsu
25768a4cd00aSWarner Losh#
257771aa1d32SSam Leffler# Ralink Technology RT2501USB/RT2601USB wireless driver
257871aa1d32SSam Lefflerdevice		rum
257993393dfdSAndrew Thompson# Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
258093393dfdSAndrew Thompsondevice		run
25818a4cd00aSWarner Losh#
258271aa1d32SSam Leffler# Atheros AR5523 wireless driver
258371aa1d32SSam Lefflerdevice		uath
258471aa1d32SSam Leffler#
2585d1f25d5dSBernhard Schmidt# Conexant/Intersil PrismGT wireless driver
2586d1f25d5dSBernhard Schmidtdevice		upgt
2587d1f25d5dSBernhard Schmidt#
258871aa1d32SSam Leffler# Ralink Technology RT2500USB wireless driver
25898a4cd00aSWarner Loshdevice		ural
25908a4cd00aSWarner Losh#
259129311227SHans Petter Selasky# RNDIS USB ethernet driver
259229311227SHans Petter Selaskydevice		urndis
25935aaea652SKevin Lo# Realtek RTL8187B/L wireless driver
25945aaea652SKevin Lodevice		urtw
25955aaea652SKevin Lo#
259671aa1d32SSam Leffler# ZyDas ZD1211/ZD1211B wireless driver
259771aa1d32SSam Lefflerdevice		zyd
259845b395cdSGleb Smirnoff#
259945b395cdSGleb Smirnoff# Sierra USB wireless driver
260045b395cdSGleb Smirnoffdevice		usie
2601f26c33d2SNick Hibma
26028a4cd00aSWarner Losh#
2603f26c33d2SNick Hibma# debugging options for the USB subsystem
26041d33cf3dSNick Hibma#
26051d33cf3dSNick Hibmaoptions 	USB_DEBUG
2606fe75118bSNick Hibmaoptions 	U3G_DEBUG
2607f26c33d2SNick Hibma
26086e8394b8SKazutaka YOKOTA# options for ukbd:
26096e8394b8SKazutaka YOKOTAoptions 	UKBD_DFLT_KEYMAP	# specify the built-in keymap
2610440f1cf7SBruce Evansmakeoptions	UKBD_DFLT_KEYMAP=jp.106
26116e8394b8SKazutaka YOKOTA
2612565f53bbSShunsuke Akiyama# options for uplcom:
26133c7c6c12SMike Pritchardoptions 	UPLCOM_INTR_INTERVAL=100	# interrupt pipe interval
2614565f53bbSShunsuke Akiyama						# in milliseconds
2615565f53bbSShunsuke Akiyama
261620280807SShunsuke Akiyama# options for uvscom:
261720280807SShunsuke Akiyamaoptions 	UVSCOM_DEFAULT_OPKTSIZE=8	# default output packet size
26183c7c6c12SMike Pritchardoptions 	UVSCOM_INTR_INTERVAL=100	# interrupt pipe interval
2619565f53bbSShunsuke Akiyama						# in milliseconds
262020280807SShunsuke Akiyama
26218b7ce2ffSSam Leffler#####################################################################
2622869093b1SHidetoshi Shimokawa# FireWire support
26237d2ba89bSJohn Baldwin
2624869093b1SHidetoshi Shimokawadevice		firewire	# FireWire bus code
26257d2ba89bSJohn Baldwindevice		sbp		# SCSI over Firewire (Requires scbus and da)
262679acdabbSHidetoshi Shimokawadevice		sbp_targ	# SBP-2 Target mode  (Requires scbus and targ)
2627869093b1SHidetoshi Shimokawadevice		fwe		# Ethernet over FireWire (non-standard!)
26281c9c6382SRuslan Ermilovdevice		fwip		# IP over FireWire (RFC2734 and RFC3146)
2629869093b1SHidetoshi Shimokawa
2630869093b1SHidetoshi Shimokawa#####################################################################
2631869093b1SHidetoshi Shimokawa# dcons support (Dumb Console Device)
2632869093b1SHidetoshi Shimokawa
2633869093b1SHidetoshi Shimokawadevice		dcons			# dumb console driver
2634869093b1SHidetoshi Shimokawadevice		dcons_crom		# FireWire attachment
2635869093b1SHidetoshi Shimokawaoptions 	DCONS_BUF_SIZE=16384	# buffer size
2636869093b1SHidetoshi Shimokawaoptions 	DCONS_POLL_HZ=100	# polling rate
2637869093b1SHidetoshi Shimokawaoptions 	DCONS_FORCE_CONSOLE=0	# force to be the primary console
2638869093b1SHidetoshi Shimokawaoptions 	DCONS_FORCE_GDB=1	# force to be the gdb device
26397d2ba89bSJohn Baldwin
26407d2ba89bSJohn Baldwin#####################################################################
26418b7ce2ffSSam Leffler# crypto subsystem
26428b7ce2ffSSam Leffler#
26431c9c6382SRuslan Ermilov# This is a port of the OpenBSD crypto framework.  Include this when
2644b2630c29SGeorge V. Neville-Neil# configuring IPSEC and when you have a h/w crypto device to accelerate
26451c9c6382SRuslan Ermilov# user applications that link to OpenSSL.
26468b7ce2ffSSam Leffler#
26471c9c6382SRuslan Ermilov# Drivers are ports from OpenBSD with some simple enhancements that have
26481c9c6382SRuslan Ermilov# been fed back to OpenBSD.
26498b7ce2ffSSam Leffler
26508b7ce2ffSSam Lefflerdevice		crypto		# core crypto support
2651b65946c6SJohn-Mark Gurney
2652b65946c6SJohn-Mark Gurney# Only install the cryptodev device if you are running tests, or know
2653e0b231cbSJohn-Mark Gurney# specifically why you need it.  In most cases, it is not needed and
2654e0b231cbSJohn-Mark Gurney# will make things slower.
26558b7ce2ffSSam Lefflerdevice		cryptodev	# /dev/crypto for access to h/w
26568b7ce2ffSSam Leffler
2657ac7e2c05SSam Lefflerdevice		rndtest		# FIPS 140-2 entropy tester
26588b7ce2ffSSam Leffler
26595033c43bSJohn Baldwindevice		ccr		# Chelsio T6
26605033c43bSJohn Baldwin
2661b7c4858fSSam Lefflerdevice		hifn		# Hifn 7951, 7781, etc.
2662b7c4858fSSam Leffleroptions 	HIFN_DEBUG	# enable debugging support: hw.hifn.debug
2663b7c4858fSSam Leffleroptions 	HIFN_RNDTEST	# enable rndtest support
2664b7c4858fSSam Leffler
2665ff3569beSJohn Baldwindevice		safe		# SafeNet 1141
2666ff3569beSJohn Baldwinoptions 	SAFE_DEBUG	# enable debugging support: hw.safe.debug
2667ff3569beSJohn Baldwinoptions 	SAFE_RNDTEST	# enable rndtest support
2668ff3569beSJohn Baldwin
26698b7ce2ffSSam Leffler#####################################################################
26708b7ce2ffSSam Leffler
26718b7ce2ffSSam Leffler
2672785d2100SJohn Birrell#
2673785d2100SJohn Birrell# Embedded system options:
2674785d2100SJohn Birrell#
2675785d2100SJohn Birrell# An embedded system might want to run something other than init.
26760fc9f11dSSergey Kandaurovoptions 	INIT_PATH=/sbin/init:/rescue/init
2677bc0e3a03SJeroen Ruigrok van der Werven
2678bc0e3a03SJeroen Ruigrok van der Werven# Debug options
2679bc0e3a03SJeroen Ruigrok van der Wervenoptions 	BUS_DEBUG	# enable newbus debugging
26801c9c6382SRuslan Ermilovoptions 	DEBUG_VFS_LOCKS	# enable VFS lock debugging
2681395bb186SSam Leffleroptions 	SOCKBUF_DEBUG	# enable sockbuf last record/mb tail checking
268241c1a233SGleb Smirnoffoptions 	IFMEDIA_DEBUG	# enable debugging in net/if_media.c
2683bc0e3a03SJeroen Ruigrok van der Werven
2684e2c1a4e9SBenno Rice#
2685e2c1a4e9SBenno Rice# Verbose SYSINIT
2686e2c1a4e9SBenno Rice#
2687e2c1a4e9SBenno Rice# Make the SYSINIT process performed by mi_startup() verbose.  This is very
2688e2c1a4e9SBenno Rice# useful when porting to a new architecture.  If DDB is also enabled, this
2689199b9ab8SIan Lepore# will print function names instead of addresses.  If defined with a value
2690199b9ab8SIan Lepore# of zero, the verbose code is compiled-in but disabled by default, and can
2691199b9ab8SIan Lepore# be enabled with the debug.verbose_sysinit=1 tunable.
2692e2c1a4e9SBenno Riceoptions 	VERBOSE_SYSINIT
2693e2c1a4e9SBenno Rice
2694446af86dSJohn Baldwin#####################################################################
2695446af86dSJohn Baldwin# SYSV IPC KERNEL PARAMETERS
2696446af86dSJohn Baldwin#
2697446af86dSJohn Baldwin# Maximum number of System V semaphores that can be used on the system at
2698446af86dSJohn Baldwin# one time.
2699446af86dSJohn Baldwinoptions 	SEMMNI=11
2700446af86dSJohn Baldwin
2701446af86dSJohn Baldwin# Total number of semaphores system wide
2702446af86dSJohn Baldwinoptions 	SEMMNS=61
2703446af86dSJohn Baldwin
2704446af86dSJohn Baldwin# Total number of undo structures in system
2705446af86dSJohn Baldwinoptions 	SEMMNU=31
2706446af86dSJohn Baldwin
2707446af86dSJohn Baldwin# Maximum number of System V semaphores that can be used by a single process
2708446af86dSJohn Baldwin# at one time.
2709446af86dSJohn Baldwinoptions 	SEMMSL=61
2710446af86dSJohn Baldwin
2711446af86dSJohn Baldwin# Maximum number of operations that can be outstanding on a single System V
2712446af86dSJohn Baldwin# semaphore at one time.
2713446af86dSJohn Baldwinoptions 	SEMOPM=101
2714446af86dSJohn Baldwin
2715446af86dSJohn Baldwin# Maximum number of undo operations that can be outstanding on a single
2716446af86dSJohn Baldwin# System V semaphore at one time.
2717446af86dSJohn Baldwinoptions 	SEMUME=11
2718446af86dSJohn Baldwin
2719446af86dSJohn Baldwin# Maximum number of shared memory pages system wide.
2720446af86dSJohn Baldwinoptions 	SHMALL=1025
2721446af86dSJohn Baldwin
2722446af86dSJohn Baldwin# Maximum size, in bytes, of a single System V shared memory region.
272325388b6cSBruce Evansoptions 	SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2724446af86dSJohn Baldwinoptions 	SHMMAXPGS=1025
2725446af86dSJohn Baldwin
2726446af86dSJohn Baldwin# Minimum size, in bytes, of a single System V shared memory region.
2727446af86dSJohn Baldwinoptions 	SHMMIN=2
2728446af86dSJohn Baldwin
2729446af86dSJohn Baldwin# Maximum number of shared memory regions that can be used on the system
2730446af86dSJohn Baldwin# at one time.
2731446af86dSJohn Baldwinoptions 	SHMMNI=33
2732446af86dSJohn Baldwin
2733446af86dSJohn Baldwin# Maximum number of System V shared memory regions that can be attached to
2734446af86dSJohn Baldwin# a single process at one time.
2735446af86dSJohn Baldwinoptions 	SHMSEG=9
2736446af86dSJohn Baldwin
2737d9282887SDima Dorfman# Set the amount of time (in seconds) the system will wait before
2738d9282887SDima Dorfman# rebooting automatically when a kernel panic occurs.  If set to (-1),
2739d9282887SDima Dorfman# the system will wait indefinitely until a key is pressed on the
2740d9282887SDima Dorfman# console.
2741d9282887SDima Dorfmanoptions 	PANIC_REBOOT_WAIT_TIME=16
2742d9282887SDima Dorfman
27435bbb8060STor Egge# Attempt to bypass the buffer cache and put data directly into the
27445bbb8060STor Egge# userland buffer for read operation when O_DIRECT flag is set on the
27455bbb8060STor Egge# file.  Both offset and length of the read operation must be
27465bbb8060STor Egge# multiples of the physical media sector size.
27475bbb8060STor Egge#
2748995356dcSDag-Erling Smørgravoptions 	DIRECTIO
27495bbb8060STor Egge
27505bbb8060STor Egge# Specify a lower limit for the number of swap I/O buffers.  They are
27515bbb8060STor Egge# (among other things) used when bypassing the buffer cache due to
27525bbb8060STor Egge# DIRECTIO kernel option enabled and O_DIRECT flag set on file.
27535bbb8060STor Egge#
2754995356dcSDag-Erling Smørgravoptions 	NSWBUF_MIN=120
27555bbb8060STor Egge
2756446af86dSJohn Baldwin#####################################################################
2757446af86dSJohn Baldwin
2758bc0e3a03SJeroen Ruigrok van der Werven# More undocumented options for linting.
27599c0ef6d5SOliver Fromme# Note that documenting these is not considered an affront.
2760bc0e3a03SJeroen Ruigrok van der Werven
2761bc0e3a03SJeroen Ruigrok van der Wervenoptions 	CAM_DEBUG_DELAY
276228d7984fSJeroen Ruigrok van der Werven
2763bc0e3a03SJeroen Ruigrok van der Wervenoptions 	DEBUG
27648b6f5e65SJeroen Ruigrok van der Werven
276528d7984fSJeroen Ruigrok van der Werven# Kernel filelock debugging.
2766bc0e3a03SJeroen Ruigrok van der Wervenoptions 	LOCKF_DEBUG
276728d7984fSJeroen Ruigrok van der Werven
27688b6f5e65SJeroen Ruigrok van der Werven# System V compatible message queues
27698b6f5e65SJeroen Ruigrok van der Werven# Please note that the values provided here are used to test kernel
27708b6f5e65SJeroen Ruigrok van der Werven# building.  The defaults in the sources provide almost the same numbers.
27718b6f5e65SJeroen Ruigrok van der Werven# MSGSSZ must be a power of 2 between 8 and 1024.
27728b6f5e65SJeroen Ruigrok van der Wervenoptions 	MSGMNB=2049	# Max number of chars in queue
27738b6f5e65SJeroen Ruigrok van der Wervenoptions 	MSGMNI=41	# Max number of message queue identifiers
27748b6f5e65SJeroen Ruigrok van der Wervenoptions 	MSGSEG=2049	# Max number of message segments
27758b6f5e65SJeroen Ruigrok van der Wervenoptions 	MSGSSZ=16	# Size of a message segment
27768b6f5e65SJeroen Ruigrok van der Wervenoptions 	MSGTQL=41	# Max number of messages in system
27778b6f5e65SJeroen Ruigrok van der Werven
27788b6f5e65SJeroen Ruigrok van der Wervenoptions 	NBUF=512	# Number of buffer headers
27798b6f5e65SJeroen Ruigrok van der Werven
27808b6f5e65SJeroen Ruigrok van der Wervenoptions 	SC_DEBUG_LEVEL=5	# Syscons debug level
27818b6f5e65SJeroen Ruigrok van der Wervenoptions 	SC_RENDER_DEBUG	# syscons rendering debugging
27828b6f5e65SJeroen Ruigrok van der Werven
27838b6f5e65SJeroen Ruigrok van der Wervenoptions 	VFS_BIO_DEBUG	# VFS buffer I/O debugging
27848b6f5e65SJeroen Ruigrok van der Werven
2785316ec49aSScott Longoptions 	KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
2786b7627840SKonstantin Belousovoptions 	KSTACK_USAGE_PROF
2787316ec49aSScott Long
2788662d3818SScott Long# Adaptec Array Controller driver options
2789662d3818SScott Longoptions 	AAC_DEBUG	# Debugging levels:
2790662d3818SScott Long				# 0 - quiet, only emit warnings
2791662d3818SScott Long				# 1 - noisy, emit major function
2792662d3818SScott Long				#     points and things done
2793662d3818SScott Long				# 2 - extremely noisy, emit trace
2794662d3818SScott Long				#     items in loops, etc.
2795662d3818SScott Long
2796097055e2SEdward Tomasz Napierala# Resource Accounting
2797097055e2SEdward Tomasz Napieralaoptions 	RACCT
2798097055e2SEdward Tomasz Napierala
2799ec125fbbSEdward Tomasz Napierala# Resource Limits
2800ec125fbbSEdward Tomasz Napieralaoptions 	RCTL
2801ec125fbbSEdward Tomasz Napierala
28021e9ea774SBruce Evans# Yet more undocumented options for linting.
28031e9ea774SBruce Evansoptions 	MAXFILES=999
2804efba048eSXin LI
2805997b0a64SDag-Erling Smørgrav# Random number generator
2806a3c41f8bSConrad Meyer# Alternative algorithm.
2807a3c41f8bSConrad Meyer#options 	RANDOM_FENESTRASX
280819fa89e9SMark Murray# Allow the CSPRNG algorithm to be loaded as a module.
280919fa89e9SMark Murray#options 	RANDOM_LOADABLE
2810e866d8f0SMark Murray# Select this to allow high-rate but potentially expensive
2811e866d8f0SMark Murray# harvesting of Slab-Allocator entropy. In very high-rate
2812e866d8f0SMark Murray# situations the value of doing this is dubious at best.
2813e866d8f0SMark Murrayoptions 	RANDOM_ENABLE_UMA	# slab allocator
281481e3caafSJustin Hibbits
2815a6bc59f2SMatt Macy# Select this to allow high-rate but potentially expensive
28161ff65c57SGordon Bergling# harvesting of the m_next pointer in the mbuf. Note that
2817a6bc59f2SMatt Macy# the m_next pointer is NULL except when receiving > 4K
2818a6bc59f2SMatt Macy# jumbo frames or sustained bursts by way of LRO. Thus in
2819a6bc59f2SMatt Macy# the common case it is stirring zero in to the entropy
2820a6bc59f2SMatt Macy# pool. In cases where it is not NULL it is pointing to one
2821a6bc59f2SMatt Macy# of a small (in the thousands to 10s of thousands) number
2822a6bc59f2SMatt Macy# of 256 byte aligned mbufs. Hence it is, even in the best
2823a6bc59f2SMatt Macy# case, a poor source of entropy. And in the absence of actual
2824a6bc59f2SMatt Macy# runtime analysis of entropy collection may mislead the user in
2825a6bc59f2SMatt Macy# to believe that substantially more entropy is being collected
2826a6bc59f2SMatt Macy# than in fact is - leading to a different class of security
2827a6bc59f2SMatt Macy# risk. In high packet rate situations ethernet entropy
2828a6bc59f2SMatt Macy# collection is also very expensive, possibly leading to as
2829a6bc59f2SMatt Macy# much as a 50% drop in packets received.
2830a6bc59f2SMatt Macy# This option is present to maintain backwards compatibility
2831a6bc59f2SMatt Macy# if desired, however it cannot be recommended for use in any
2832a6bc59f2SMatt Macy# environment.
2833a6bc59f2SMatt Macyoptions 	RANDOM_ENABLE_ETHER	# ether_input
2834a6bc59f2SMatt Macy
283581e3caafSJustin Hibbits# Module to enable execution of application via emulators like QEMU
2836eb6f4885SDoug Rabsonoptions         IMGACT_BINMISC
2837aa14e9b7SMark Johnston
2838aa14e9b7SMark Johnston# zlib I/O stream support
2839aa14e9b7SMark Johnston# This enables support for compressed core dumps.
2840aa14e9b7SMark Johnstonoptions 	GZIO
2841fb403678SAdrian Chadd
2842eefd8f96SConrad Meyer# zstd support
2843fb702b44SMatt Macy# This enables support for Zstd compressed core dumps, GEOM_UZIP images,
2844fb702b44SMatt Macy# and is required by zfs if statically linked.
28456026dcd7SMark Johnstonoptions 	ZSTDIO
28466026dcd7SMark Johnston
2847fb403678SAdrian Chadd# BHND(4) drivers
2848fb403678SAdrian Chaddoptions 	BHND_LOGLEVEL	# Logging threshold level
28492b3f6d66SOleksandr Tymoshenko
28502b3f6d66SOleksandr Tymoshenko# evdev interface
2851a6b15a34SOleksandr Tymoshenkodevice		evdev		# input event device support
2852a6b15a34SOleksandr Tymoshenkooptions 	EVDEV_SUPPORT	# evdev support in legacy drivers
2853a6b15a34SOleksandr Tymoshenkooptions 	EVDEV_DEBUG	# enable event debug msgs
2854a6b15a34SOleksandr Tymoshenkodevice		uinput		# install /dev/uinput cdev
2855a6b15a34SOleksandr Tymoshenkooptions 	UINPUT_DEBUG	# enable uinput debug msgs
2856480f31c2SKonrad Witaszczyk
2857480f31c2SKonrad Witaszczyk# Encrypted kernel crash dumps.
2858480f31c2SKonrad Witaszczykoptions 	EKCD
28591fcf4de0SIan Lepore
28602d7e9271SIan Lepore# Serial Peripheral Interface (SPI) support.
28612d7e9271SIan Leporedevice		spibus		# Bus support.
28622d7e9271SIan Leporedevice		at45d		# DataFlash driver
28632d7e9271SIan Leporedevice		cqspi		#
28642d7e9271SIan Leporedevice		mx25l		# SPIFlash driver
28652d7e9271SIan Leporedevice		n25q		#
28662d7e9271SIan Leporedevice		spigen		# Generic access to SPI devices from userland.
28671fcf4de0SIan Lepore# Enable legacy /dev/spigenN name aliases for /dev/spigenX.Y devices.
28681fcf4de0SIan Leporeoptions 	SPIGEN_LEGACY_CDEVNAME # legacy device names for spigen
2869e8643b01SKonstantin Belousov
28700ed1d6fbSXin LI# Compression supports.
28710ed1d6fbSXin LIdevice		zlib		# gzip/zlib compression/decompression library
2872e8643b01SKonstantin Belousovdevice		xz		# xz_embedded LZMA de-compression library
28732ae3f52cSEdward Tomasz Napierala
28742ae3f52cSEdward Tomasz Napierala# Kernel support for stats(3).
28752ae3f52cSEdward Tomasz Napieralaoptions 	STATS
2876