xref: /freebsd/sys/conf/NOTES (revision 5ea0b89242dbc1e4d4bac16983291a7c3803f88e)
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
157069accaaSPoul-Henning Kampoptions 	GEOM_BDE		# Disk encryption.
1585d9f25dcSRuslan Ermilovoptions 	GEOM_CACHE		# Disk cache.
1597226443dSPawel Jakub Dawidekoptions 	GEOM_CONCAT		# Disk concatenation.
1605ca1fcfeSPawel Jakub Dawidekoptions 	GEOM_ELI		# Disk encryption.
1617226443dSPawel Jakub Dawidekoptions 	GEOM_GATE		# Userland services.
162f348204cSPawel Jakub Dawidekoptions 	GEOM_JOURNAL		# Journaling.
163e1237b28SPawel Jakub Dawidekoptions 	GEOM_LABEL		# Providers labelization.
1641669d8afSAndrew Thompsonoptions 	GEOM_LINUX_LVM		# Linux LVM2 volumes
165fcdb1ffcSAndrey V. Elsukovoptions 	GEOM_MAP		# Map based partitioning
1668a8fbacaSPawel Jakub Dawidekoptions 	GEOM_MIRROR		# Disk mirroring.
167e770bc6bSMatt Jacoboptions 	GEOM_MULTIPATH		# Disk multipath
1687dc92b13SPawel Jakub Dawidekoptions 	GEOM_NOP		# Test class.
1691d3aed33SMarcel Moolenaaroptions 	GEOM_PART_APM		# Apple partitioning
1705aaa8fefSMarcel Moolenaaroptions 	GEOM_PART_BSD		# BSD disklabel
171d68d0cf5SAndrey V. Elsukovoptions 	GEOM_PART_BSD64		# BSD disklabel64
17291e1be8bSMarcel Moolenaaroptions 	GEOM_PART_EBR		# Extended Boot Records
1731d3aed33SMarcel Moolenaaroptions 	GEOM_PART_GPT		# GPT partitioning
174e800e2e1SAndrey V. Elsukovoptions 	GEOM_PART_LDM		# Logical Disk Manager
1756bc50445SMarcel Moolenaaroptions 	GEOM_PART_MBR		# MBR partitioning
17689b17223SAlexander Motinoptions 	GEOM_RAID		# Soft RAID functionality.
177e81856c3SPawel Jakub Dawidekoptions 	GEOM_RAID3		# RAID3 functionality.
178560cb857SPawel Jakub Dawidekoptions 	GEOM_SHSEC		# Shared secret.
1797dc92b13SPawel Jakub Dawidekoptions 	GEOM_STRIPE		# Disk striping.
18075261008SMax Khonoptions 	GEOM_UZIP		# Read-only compressed disks
18102e17f0bSMarius Strobloptions 	GEOM_VINUM		# Vinum logical volume manager
182f854db0bSPawel Jakub Dawidekoptions 	GEOM_VIRSTOR		# Virtual storage.
1831c9c6382SRuslan Ermilovoptions 	GEOM_ZERO		# Performance testing helper.
1847b03a440SPoul-Henning Kamp
1858b140d57SMike Smith#
1868b140d57SMike Smith# The root device and filesystem type can be compiled in;
1878b140d57SMike Smith# this provides a fallback option if the root device cannot
1883b6c640cSCrist J. Clark# be correctly guessed by the bootstrap code, or an override if
1898b140d57SMike Smith# the RB_DFLTROOT flag (-r) is specified when booting the kernel.
1908b140d57SMike Smith#
1918b140d57SMike Smithoptions 	ROOTDEVNAME=\"ufs:da0s2e\"
1928b140d57SMike Smith
1936a8d6623SGarrett Wollman
1946a8d6623SGarrett Wollman#####################################################################
195f5d05ac3SJeff Roberson# Scheduler options:
196f5d05ac3SJeff Roberson#
197a61617edSGiorgos Keramidas# Specifying one of SCHED_4BSD or SCHED_ULE is mandatory.  These options
198f5d05ac3SJeff Roberson# select which scheduler is compiled in.
199f5d05ac3SJeff Roberson#
200f5d05ac3SJeff Roberson# SCHED_4BSD is the historical, proven, BSD scheduler.  It has a global run
2011c9c6382SRuslan Ermilov# queue and no CPU affinity which makes it suboptimal for SMP.  It has very
202f5d05ac3SJeff Roberson# good interactivity and priority selection.
203f5d05ac3SJeff Roberson#
204bd675f58SJeff Roberson# SCHED_ULE provides significant performance advantages over 4BSD on many
205bd675f58SJeff Roberson# workloads on SMP machines.  It supports cpu-affinity, per-cpu runqueues
206bd675f58SJeff Roberson# and scheduler locks.  It also has a stronger notion of interactivity
207bd675f58SJeff Roberson# which leads to better responsiveness even on uniprocessor machines.  This
2089c0ef6d5SOliver Fromme# is the default scheduler.
209f5d05ac3SJeff Roberson#
21075a66a92SJeff Roberson# SCHED_STATS is a debugging option which keeps some stats in the sysctl
21175a66a92SJeff Roberson# tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
21275a66a92SJeff Roberson#
213b998bd92SJeff Robersonoptions 	SCHED_4BSD
21475a66a92SJeff Robersonoptions 	SCHED_STATS
215b998bd92SJeff Roberson#options 	SCHED_ULE
216f5d05ac3SJeff Roberson
217f5d05ac3SJeff Roberson#####################################################################
218477a642cSPeter Wemm# SMP OPTIONS:
219477a642cSPeter Wemm#
220477a642cSPeter Wemm# SMP enables building of a Symmetric MultiProcessor Kernel.
221477a642cSPeter Wemm
222477a642cSPeter Wemm# Mandatory:
223477a642cSPeter Wemmoptions 	SMP			# Symmetric MultiProcessor Kernel
224477a642cSPeter Wemm
225fdce57a0SJohn Baldwin# EARLY_AP_STARTUP releases the Application Processors earlier in the
226fdce57a0SJohn Baldwin# kernel startup process (before devices are probed) rather than at the
227fdce57a0SJohn Baldwin# end.  This is a temporary option for use during the transition from
228fdce57a0SJohn Baldwin# late to early AP startup.
229fdce57a0SJohn Baldwinoptions 	EARLY_AP_STARTUP
230fdce57a0SJohn Baldwin
23168b739cdSAttilio Rao# MAXCPU defines the maximum number of CPUs that can boot in the system.
23268b739cdSAttilio Rao# A default value should be already present, for every architecture.
23368b739cdSAttilio Raooptions 	MAXCPU=32
23468b739cdSAttilio Rao
235b6715dabSJeff Roberson# NUMA enables use of Non-Uniform Memory Access policies in various kernel
236b6715dabSJeff Roberson# subsystems.
237b6715dabSJeff Robersonoptions 	NUMA
238b6715dabSJeff Roberson
239941646f5SAttilio Rao# MAXMEMDOM defines the maximum number of memory domains that can boot in the
240941646f5SAttilio Rao# system.  A default value should already be defined by every architecture.
24162d70a81SJohn Baldwinoptions 	MAXMEMDOM=2
24262d70a81SJohn Baldwin
2432498cf8cSJohn Baldwin# ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
2442498cf8cSJohn Baldwin# if the thread that currently owns the mutex is executing on another
245d51e8487SJosh Paetzel# CPU.  This behavior is enabled by default, so this option can be used
246701f1408SScott Long# to disable it.
247701f1408SScott Longoptions 	NO_ADAPTIVE_MUTEXES
2482498cf8cSJohn Baldwin
249cd6e6e4eSJohn Baldwin# ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
250cd6e6e4eSJohn Baldwin# if the thread that currently owns the rwlock is executing on another
251d51e8487SJosh Paetzel# CPU.  This behavior is enabled by default, so this option can be used
252cd6e6e4eSJohn Baldwin# to disable it.
253cd6e6e4eSJohn Baldwinoptions 	NO_ADAPTIVE_RWLOCKS
254cd6e6e4eSJohn Baldwin
2551ae1c2a3SAttilio Rao# ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
2561ae1c2a3SAttilio Rao# currently owns the sx lock is executing on another CPU.
257d51e8487SJosh Paetzel# This behavior is enabled by default, so this option can be used to
2581ae1c2a3SAttilio Rao# disable it.
2591ae1c2a3SAttilio Raooptions 	NO_ADAPTIVE_SX
2604e7f640dSJohn Baldwin
261ad27c4c7SJohn Baldwin# MUTEX_NOINLINE forces mutex operations to call functions to perform each
262ad27c4c7SJohn Baldwin# operation rather than inlining the simple cases.  This can be used to
263ad27c4c7SJohn Baldwin# shrink the size of the kernel text segment.  Note that this behavior is
264cf31ff26SRuslan Ermilov# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
265ad27c4c7SJohn Baldwin# and WITNESS options.
266ad27c4c7SJohn Baldwinoptions 	MUTEX_NOINLINE
267ad27c4c7SJohn Baldwin
2681a5d9b15SJohn Baldwin# RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
2691a5d9b15SJohn Baldwin# operation rather than inlining the simple cases.  This can be used to
2701a5d9b15SJohn Baldwin# shrink the size of the kernel text segment.  Note that this behavior is
271cf31ff26SRuslan Ermilov# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
2721a5d9b15SJohn Baldwin# and WITNESS options.
2731a5d9b15SJohn Baldwinoptions 	RWLOCK_NOINLINE
2741a5d9b15SJohn Baldwin
2754e7f640dSJohn Baldwin# SX_NOINLINE forces sx lock operations to call functions to perform each
2764e7f640dSJohn Baldwin# operation rather than inlining the simple cases.  This can be used to
2774e7f640dSJohn Baldwin# shrink the size of the kernel text segment.  Note that this behavior is
2784e7f640dSJohn Baldwin# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
2794e7f640dSJohn Baldwin# and WITNESS options.
2804e7f640dSJohn Baldwinoptions 	SX_NOINLINE
2814e7f640dSJohn Baldwin
2821fe4c660SJohn Baldwin# SMP Debugging Options:
2831fe4c660SJohn Baldwin#
2845b999a6bSDavide Italiano# CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
2855b999a6bSDavide Italiano#	  structure used as backend in callout(9).
2865e21b51bSDavid E. O'Brien# PREEMPTION allows the threads that are in the kernel to be preempted by
2875e21b51bSDavid E. O'Brien#	  higher priority [interrupt] threads.  It helps with interactivity
2885e21b51bSDavid E. O'Brien#	  and allows interrupt threads to run sooner rather than waiting.
2890c0b25aeSJohn Baldwin# FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
2908c5923d9SCeri Davies#	  threads.  Its sole use is to expose race conditions and other
2910c0b25aeSJohn Baldwin#	  bugs during development.  Enabling this option will reduce
2920c0b25aeSJohn Baldwin#	  performance and increase the frequency of kernel panics by
2930c0b25aeSJohn Baldwin#	  design.  If you aren't sure that you need it then you don't.
2949923b511SScott Long#	  Relies on the PREEMPTION option.  DON'T TURN THIS ON.
295ef0ebfc3SJohn Baldwin# SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
29675a66a92SJeff Roberson#	  used to hold active sleep queues as well as sleep wait message
29775a66a92SJeff Roberson#	  frequency.
298ef0ebfc3SJohn Baldwin# TURNSTILE_PROFILING enables rudimentary profiling of the hash table
299ef0ebfc3SJohn Baldwin#	  used to hold active lock queues.
300c6111de5SDavide Italiano# UMTX_PROFILING enables rudimentary profiling of the hash table used
30127c8e6b8SGlen Barber#	  to hold active lock queues.
302aa4019efSRobert Watson# WITNESS enables the witness code which detects deadlocks and cycles
3031fe4c660SJohn Baldwin#         during locking operations.
304e2ee2173SMarcel Moolenaar# WITNESS_KDB causes the witness code to drop into the kernel debugger if
3053c7c6c12SMike Pritchard#	  a lock hierarchy violation occurs or if locks are held when going to
306660d1e3aSJohn Baldwin#	  sleep.
307660d1e3aSJohn Baldwin# WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
3089923b511SScott Longoptions 	PREEMPTION
3090c0b25aeSJohn Baldwinoptions 	FULL_PREEMPTION
3101fe4c660SJohn Baldwinoptions 	WITNESS
311e2ee2173SMarcel Moolenaaroptions 	WITNESS_KDB
312660d1e3aSJohn Baldwinoptions 	WITNESS_SKIPSPIN
3131fe4c660SJohn Baldwin
314cf31ff26SRuslan Ermilov# LOCK_PROFILING - Profiling locks.  See LOCK_PROFILING(9) for details.
31507dba937SKip Macyoptions 	LOCK_PROFILING
31600096801SJohn-Mark Gurney# Set the number of buffers and the hash size.  The hash size MUST be larger
31700096801SJohn-Mark Gurney# than the number of buffers.  Hash size should be prime.
31800096801SJohn-Mark Gurneyoptions 	MPROF_BUFFERS="1536"
31900096801SJohn-Mark Gurneyoptions 	MPROF_HASH_SIZE="1543"
3204db0d7f1SDag-Erling Smørgrav
3215b999a6bSDavide Italiano# Profiling for the callout(9) backend.
3225b999a6bSDavide Italianooptions 	CALLOUT_PROFILING
3235b999a6bSDavide Italiano
324ef0ebfc3SJohn Baldwin# Profiling for internal hash tables.
325ef0ebfc3SJohn Baldwinoptions 	SLEEPQUEUE_PROFILING
326ef0ebfc3SJohn Baldwinoptions 	TURNSTILE_PROFILING
327c6111de5SDavide Italianooptions 	UMTX_PROFILING
328331805a5SDavide Italiano
329b9485d76SJohn Baldwin# Debugging traces for epoch(9) misuse
330b9485d76SJohn Baldwinoptions 	EPOCH_TRACE
331ef0ebfc3SJohn Baldwin
332477a642cSPeter Wemm#####################################################################
3336a8d6623SGarrett Wollman# COMPATIBILITY OPTIONS
334690f540cSAndrey A. Chernov
335d3e64681SPoul-Henning Kamp# Old tty interface.
336d3e64681SPoul-Henning Kampoptions 	COMPAT_43TTY
337d3e64681SPoul-Henning Kamp
338f5e4c105SJohn Baldwin# Note that as a general rule, COMPAT_FREEBSD<n> depends on
339f5e4c105SJohn Baldwin# COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
340f5e4c105SJohn Baldwin
341f0eb293eSAlfred Perlstein# Enable FreeBSD4 compatibility syscalls
342f0eb293eSAlfred Perlsteinoptions 	COMPAT_FREEBSD4
343f0eb293eSAlfred Perlstein
344a01b4125SKen Smith# Enable FreeBSD5 compatibility syscalls
345a01b4125SKen Smithoptions 	COMPAT_FREEBSD5
346a01b4125SKen Smith
3476c9fdda7SRuslan Ermilov# Enable FreeBSD6 compatibility syscalls
3486c9fdda7SRuslan Ermilovoptions 	COMPAT_FREEBSD6
3496c9fdda7SRuslan Ermilov
3505965c4b7SJohn Baldwin# Enable FreeBSD7 compatibility syscalls
3515965c4b7SJohn Baldwinoptions 	COMPAT_FREEBSD7
3525965c4b7SJohn Baldwin
3537d313e7bSJohn Baldwin# Enable FreeBSD9 compatibility syscalls
3547d313e7bSJohn Baldwinoptions 	COMPAT_FREEBSD9
3557d313e7bSJohn Baldwin
3567d313e7bSJohn Baldwin# Enable FreeBSD10 compatibility syscalls
3577d313e7bSJohn Baldwinoptions 	COMPAT_FREEBSD10
3587d313e7bSJohn Baldwin
3597f68a896SMark Johnston# Enable FreeBSD11 compatibility syscalls
3607f68a896SMark Johnstonoptions 	COMPAT_FREEBSD11
3617f68a896SMark Johnston
362d6745408SConrad Meyer# Enable FreeBSD12 compatibility syscalls
363d6745408SConrad Meyeroptions 	COMPAT_FREEBSD12
364d6745408SConrad Meyer
3654e85b648SKristof Provost# Enable FreeBSD13 compatibility syscalls
3664e85b648SKristof Provostoptions 	COMPAT_FREEBSD13
3674e85b648SKristof Provost
36884d12f88SKristof Provost# Enable FreeBSD14 compatibility syscalls
36984d12f88SKristof Provostoptions 	COMPAT_FREEBSD14
37084d12f88SKristof Provost
3718d59ecb2SHans Petter Selasky# Enable Linux Kernel Programming Interface
3728d59ecb2SHans Petter Selaskyoptions 	COMPAT_LINUXKPI
3738d59ecb2SHans Petter Selasky
3746a8d6623SGarrett Wollman#
3756a8d6623SGarrett Wollman# These three options provide support for System V Interface
3766a8d6623SGarrett Wollman# Definition-style interprocess communication, in the form of shared
3776a8d6623SGarrett Wollman# memory, semaphores, and message queues, respectively.
3786a8d6623SGarrett Wollman#
3796a8d6623SGarrett Wollmanoptions 	SYSVSHM
3806a8d6623SGarrett Wollmanoptions 	SYSVSEM
3816a8d6623SGarrett Wollmanoptions 	SYSVMSG
3826a8d6623SGarrett Wollman
3836a8d6623SGarrett Wollman
3846a8d6623SGarrett Wollman#####################################################################
3856a8d6623SGarrett Wollman# DEBUGGING OPTIONS
3866a8d6623SGarrett Wollman
3876a8d6623SGarrett Wollman#
388e2ee2173SMarcel Moolenaar# Compile with kernel debugger related code.
3896a8d6623SGarrett Wollman#
390e2ee2173SMarcel Moolenaaroptions 	KDB
391b5d89ca8SBruce Evans
392b5d89ca8SBruce Evans#
393e2ee2173SMarcel Moolenaar# Print a stack trace of the current thread on the console for a panic.
3947085e708SBruce Evans#
395e2ee2173SMarcel Moolenaaroptions 	KDB_TRACE
396e2ee2173SMarcel Moolenaar
397e2ee2173SMarcel Moolenaar#
398e2ee2173SMarcel Moolenaar# Don't enter the debugger for a panic. Intended for unattended operation
399e2ee2173SMarcel Moolenaar# where you may want to enter the debugger from the console, but still want
400e2ee2173SMarcel Moolenaar# the machine to recover from a panic.
401e2ee2173SMarcel Moolenaar#
402e2ee2173SMarcel Moolenaaroptions 	KDB_UNATTENDED
403e2ee2173SMarcel Moolenaar
404e2ee2173SMarcel Moolenaar#
405e2ee2173SMarcel Moolenaar# Enable the ddb debugger backend.
406e2ee2173SMarcel Moolenaar#
407e2ee2173SMarcel Moolenaaroptions 	DDB
4087085e708SBruce Evans
4097085e708SBruce Evans#
410bfdd261eSBruce Evans# Print the numerical value of symbols in addition to the symbolic
411bfdd261eSBruce Evans# representation.
412bfdd261eSBruce Evans#
413bfdd261eSBruce Evansoptions 	DDB_NUMSYM
414bfdd261eSBruce Evans
415bfdd261eSBruce Evans#
416e2ee2173SMarcel Moolenaar# Enable the remote gdb debugger backend.
4170be15decSJohn Baldwin#
418e2ee2173SMarcel Moolenaaroptions 	GDB
419562d05dfSPaul Traina
420562d05dfSPaul Traina#
42137bd4ba9SConrad Meyer# Trashes list pointers when they become invalid (i.e., the element is
42237bd4ba9SConrad Meyer# removed from a list).  Relatively inexpensive to enable.
42337bd4ba9SConrad Meyer#
42437bd4ba9SConrad Meyeroptions 	QUEUE_MACRO_DEBUG_TRASH
42537bd4ba9SConrad Meyer
42637bd4ba9SConrad Meyer#
42737bd4ba9SConrad Meyer# Stores information about the last caller to modify the list object
42837bd4ba9SConrad Meyer# in the list object.  Requires additional memory overhead.
42937bd4ba9SConrad Meyer#
4303fcdcab0SConrad Meyer#options 	QUEUE_MACRO_DEBUG_TRACE
43137bd4ba9SConrad Meyer
43237bd4ba9SConrad Meyer#
433df970488SRobert Watson# SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
434df970488SRobert Watson# contents of the registered sysctl nodes on the console.  It is disabled by
4351c9c6382SRuslan Ermilov# default because it generates excessively verbose console output that can
436df970488SRobert Watson# interfere with serial console operation.
437df970488SRobert Watson#
438df970488SRobert Watsonoptions 	SYSCTL_DEBUG
439df970488SRobert Watson
440df970488SRobert Watson#
44121d748a9SAlfred Perlstein# Enable textdump by default, this disables kernel core dumps.
44221d748a9SAlfred Perlstein#
44321d748a9SAlfred Perlsteinoptions 	TEXTDUMP_PREFERRED
44421d748a9SAlfred Perlstein
44521d748a9SAlfred Perlstein#
44621d748a9SAlfred Perlstein# Enable extra debug messages while performing textdumps.
44721d748a9SAlfred Perlstein#
44821d748a9SAlfred Perlsteinoptions 	TEXTDUMP_VERBOSE
44921d748a9SAlfred Perlstein
45021d748a9SAlfred Perlstein#
45131615ef7SRebecca Cran# NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
45231615ef7SRebecca Cran# resulting kernel.
45331615ef7SRebecca Cranoptions 	NO_SYSCTL_DESCR
45431615ef7SRebecca Cran
45531615ef7SRebecca Cran#
456d7854da1SMatthew D Fleming# MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
457d7854da1SMatthew D Fleming# allocations that are smaller than a page.  The purpose is to isolate
458d7854da1SMatthew D Fleming# different malloc types into hash classes, so that any buffer
459d7854da1SMatthew D Fleming# overruns or use-after-free will usually only affect memory from
460d7854da1SMatthew D Fleming# malloc types in that hash class.  This is purely a debugging tool;
461d7854da1SMatthew D Fleming# by varying the hash function and tracking which hash class was
462d7854da1SMatthew D Fleming# corrupted, the intersection of the hash classes from each instance
463d7854da1SMatthew D Fleming# will point to a single malloc type that is being misused.  At this
464d7854da1SMatthew D Fleming# point inspection or memguard(9) can be used to catch the offending
465d7854da1SMatthew D Fleming# code.
466d7854da1SMatthew D Fleming#
467d7854da1SMatthew D Flemingoptions 	MALLOC_DEBUG_MAXZONES=8
468d7854da1SMatthew D Fleming
469d7854da1SMatthew D Fleming#
470e4eb384bSBosko Milekic# DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
471e4eb384bSBosko Milekic# for the kernel used to detect modify-after-free scenarios.  See the
472e4eb384bSBosko Milekic# memguard(9) man page for more information on usage.
473e4eb384bSBosko Milekic#
474e4eb384bSBosko Milekicoptions 	DEBUG_MEMGUARD
475e4eb384bSBosko Milekic
476e4eb384bSBosko Milekic#
477847a2a17SPawel Jakub Dawidek# DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
478847a2a17SPawel Jakub Dawidek# malloc(9).
479847a2a17SPawel Jakub Dawidek#
480847a2a17SPawel Jakub Dawidekoptions 	DEBUG_REDZONE
481847a2a17SPawel Jakub Dawidek
482847a2a17SPawel Jakub Dawidek#
483e79f350dSWarner Losh# EARLY_PRINTF enables support for calling a special printf (eprintf)
484e79f350dSWarner Losh# very early in the kernel (before cn_init() has been called).  This
485e79f350dSWarner Losh# should only be used for debugging purposes early in boot.  Normally,
486e79f350dSWarner Losh# it is not defined.  It is commented out here because this feature
487e79f350dSWarner Losh# isn't generally available. And the required eputc() isn't defined.
488e79f350dSWarner Losh#
489e79f350dSWarner Losh#options 	EARLY_PRINTF
490e79f350dSWarner Losh
491e79f350dSWarner Losh#
492ea3fc8e4SJohn Baldwin# KTRACE enables the system-call tracing facility ktrace(2).  To be more
493ea3fc8e4SJohn Baldwin# SMP-friendly, KTRACE uses a worker thread to process most trace events
494ea3fc8e4SJohn Baldwin# asynchronously to the thread generating the event.  This requires a
495ea3fc8e4SJohn Baldwin# pre-allocated store of objects representing trace events.  The
496ea3fc8e4SJohn Baldwin# KTRACE_REQUEST_POOL option specifies the initial size of this store.
497ea3fc8e4SJohn Baldwin# The size of the pool can be adjusted both at boottime and runtime via
498ea3fc8e4SJohn Baldwin# the kern.ktrace_request_pool tunable and sysctl.
4996a8d6623SGarrett Wollman#
5002365e64fSRodney W. Grimesoptions 	KTRACE			#kernel tracing
501ea3fc8e4SJohn Baldwinoptions 	KTRACE_REQUEST_POOL=101
50221c64a07SAndrey A. Chernov
5036a8d6623SGarrett Wollman#
504f7e95633SRuslan Ermilov# KTR is a kernel tracing facility imported from BSD/OS.  It is
505a7bebf90SKris Kennaway# enabled with the KTR option.  KTR_ENTRIES defines the number of
5066e465ac7SDavide Italiano# entries in the circular trace buffer; it may be an arbitrary number.
50736b7dde4SAndriy Gapon# KTR_BOOT_ENTRIES defines the number of entries during the early boot,
50836b7dde4SAndriy Gapon# before malloc(9) is functional.
509a7bebf90SKris Kennaway# KTR_COMPILE defines the mask of events to compile into the kernel as
510a7bebf90SKris Kennaway# defined by the KTR_* constants in <sys/ktr.h>.  KTR_MASK defines the
511a7bebf90SKris Kennaway# initial value of the ktr_mask variable which determines at runtime
512a7bebf90SKris Kennaway# what events to trace.  KTR_CPUMASK determines which CPU's log
513e3709597SAttilio Rao# events, with bit X corresponding to CPU X.  The layout of the string
514d51e8487SJosh Paetzel# passed as KTR_CPUMASK must match a series of bitmasks each of them
515d4a2ab8cSAttilio Rao# separated by the "," character (ie:
516d4a2ab8cSAttilio Rao# KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF).  KTR_VERBOSE enables
517a7bebf90SKris Kennaway# dumping of KTR events to the console by default.  This functionality
518a7bebf90SKris Kennaway# can be toggled via the debug.ktr_verbose sysctl and defaults to off
519f7e95633SRuslan Ermilov# if KTR_VERBOSE is not defined.  See ktr(4) and ktrdump(8) for details.
520c508c1b6SJohn Baldwin#
521c508c1b6SJohn Baldwinoptions 	KTR
52236b7dde4SAndriy Gaponoptions 	KTR_BOOT_ENTRIES=1024
52336b7dde4SAndriy Gaponoptions 	KTR_ENTRIES=(128*1024)
5246740ed37SGleb Smirnoffoptions 	KTR_COMPILE=(KTR_ALL)
525a9672a81SJohn Baldwinoptions 	KTR_MASK=KTR_INTR
526d4a2ab8cSAttilio Raooptions 	KTR_CPUMASK=0x3
527d902baa4SJohn Baldwinoptions 	KTR_VERBOSE
528c508c1b6SJohn Baldwin
529c508c1b6SJohn Baldwin#
5301c9c6382SRuslan Ermilov# ALQ(9) is a facility for the asynchronous queuing of records from the kernel
531f7e95633SRuslan Ermilov# to a vnode, and is employed by services such as ktr(4) to produce trace
532453ffeefSRobert Watson# files based on a kernel event stream.  Records are written asynchronously
533453ffeefSRobert Watson# in a worker thread.
534453ffeefSRobert Watson#
535453ffeefSRobert Watsonoptions 	ALQ
536453ffeefSRobert Watsonoptions 	KTR_ALQ
537453ffeefSRobert Watson
538453ffeefSRobert Watson#
5395526d2d9SEivind Eklund# The INVARIANTS option is used in a number of source files to enable
5406a8d6623SGarrett Wollman# extra sanity checking of internal structures.  This support is not
5416a8d6623SGarrett Wollman# enabled by default because of the extra time it would take to check
5426a8d6623SGarrett Wollman# for these conditions, which can only occur as a result of
5436a8d6623SGarrett Wollman# programming errors.
5446a8d6623SGarrett Wollman#
5455526d2d9SEivind Eklundoptions 	INVARIANTS
5465526d2d9SEivind Eklund
5475526d2d9SEivind Eklund#
54834b15f2aSJohn Baldwin# The INVARIANT_SUPPORT option makes us compile in support for
54934b15f2aSJohn Baldwin# verifying some of the internal structures.  It is a prerequisite for
55034b15f2aSJohn Baldwin# 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
55134b15f2aSJohn Baldwin# called.  The intent is that you can set 'INVARIANTS' for single
55234b15f2aSJohn Baldwin# source files (by changing the source file or specifying it on the
55334b15f2aSJohn Baldwin# command line) if you have 'INVARIANT_SUPPORT' enabled.  Also, if you
55434b15f2aSJohn Baldwin# wish to build a kernel module with 'INVARIANTS', then adding
55534b15f2aSJohn Baldwin# 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
55634b15f2aSJohn Baldwin# infrastructure without the added overhead.
55734b15f2aSJohn Baldwin#
55834b15f2aSJohn Baldwinoptions 	INVARIANT_SUPPORT
55934b15f2aSJohn Baldwin
56034b15f2aSJohn Baldwin#
5614ca8c1efSConrad Meyer# The KASSERT_PANIC_OPTIONAL option allows kasserts to fire without
5624ca8c1efSConrad Meyer# necessarily inducing a panic.  Panic is the default behavior, but
5634ca8c1efSConrad Meyer# runtime options can configure it either entirely off, or off with a
5644ca8c1efSConrad Meyer# limit.
5654ca8c1efSConrad Meyer#
5664ca8c1efSConrad Meyeroptions 	KASSERT_PANIC_OPTIONAL
5674ca8c1efSConrad Meyer
5684ca8c1efSConrad Meyer#
5695526d2d9SEivind Eklund# The DIAGNOSTIC option is used to enable extra debugging information
57094851f37SMark Johnston# and invariants checking.  The added checks are too expensive or noisy
57194851f37SMark Johnston# for an INVARIANTS kernel and thus are disabled by default.  It is
57294851f37SMark Johnston# expected that a kernel configured with DIAGNOSTIC will also have the
57394851f37SMark Johnston# INVARIANTS option enabled.
5745526d2d9SEivind Eklund#
5750dc7d907SPoul-Henning Kampoptions 	DIAGNOSTIC
576da59a31cSDavid Greenman
5770dd1eea1SJordan K. Hubbard#
5780b5438c6SRobert Watson# REGRESSION causes optional kernel interfaces necessary only for regression
5793c7c6c12SMike Pritchard# testing to be enabled.  These interfaces may constitute security risks
5800b5438c6SRobert Watson# when enabled, as they permit processes to easily modify aspects of the
5810b5438c6SRobert Watson# run-time environment to reproduce unlikely or unusual (possibly normally
5820b5438c6SRobert Watson# impossible) scenarios.
5830b5438c6SRobert Watson#
5840b5438c6SRobert Watsonoptions 	REGRESSION
5850b5438c6SRobert Watson
5860b5438c6SRobert Watson#
5879c0ef6d5SOliver Fromme# This option lets some drivers co-exist that can't co-exist in a running
588346ebe51SEivind Eklund# system.  This is used to be able to compile all kernel code in one go for
589346ebe51SEivind Eklund# quality assurance purposes (like this file, which the option takes it name
590346ebe51SEivind Eklund# from.)
591346ebe51SEivind Eklund#
592346ebe51SEivind Eklundoptions 	COMPILING_LINT
593346ebe51SEivind Eklund
5943c90d1eaSRobert Watson#
5953c90d1eaSRobert Watson# STACK enables the stack(9) facility, allowing the capture of kernel stack
5963c90d1eaSRobert Watson# for the purpose of procinfo(1), etc.  stack(9) will also be compiled in
5973c90d1eaSRobert Watson# automatically if DDB(4) is compiled into the kernel.
5983c90d1eaSRobert Watson#
5993c90d1eaSRobert Watsonoptions 	STACK
6003c90d1eaSRobert Watson
601cc37baeaSStephen J. Kiernan#
602cc37baeaSStephen J. Kiernan# The NUM_CORE_FILES option specifies the limit for the number of core
603cc37baeaSStephen J. Kiernan# files generated by a particular process, when the core file format
604cc37baeaSStephen J. Kiernan# specifier includes the %I pattern. Since we only have 1 character for
605cc37baeaSStephen J. Kiernan# the core count in the format string, meaning the range will be 0-9, the
606cc37baeaSStephen J. Kiernan# maximum value allowed for this option is 10.
607cc37baeaSStephen J. Kiernan# This core file limit can be adjusted at runtime via the debug.ncores
608cc37baeaSStephen J. Kiernan# sysctl.
609cc37baeaSStephen J. Kiernan#
610cc37baeaSStephen J. Kiernanoptions 	NUM_CORE_FILES=5
611cc37baeaSStephen J. Kiernan
612ae3d6bfaSColin Percival#
613ae3d6bfaSColin Percival# The TSLOG option enables timestamped logging of events, especially
614ae3d6bfaSColin Percival# function entries/exits, in order to track the time spent by the kernel.
615ae3d6bfaSColin Percival# In particular, this is useful when investigating the early boot process,
616ae3d6bfaSColin Percival# before it is possible to use more sophisticated tools like DTrace.
617ae3d6bfaSColin Percival# The TSLOGSIZE option controls the size of the (preallocated, fixed
618ae3d6bfaSColin Percival# length) buffer used for storing these events (default: 262144 records).
6192404380aSColin Percival# The TSLOG_PAGEZERO option enables TSLOG of pmap_zero_page; this must be
6202404380aSColin Percival# enabled separately since it typically generates too many records to be
6212404380aSColin Percival# useful.
622ae3d6bfaSColin Percival#
623ae3d6bfaSColin Percival# For security reasons the TSLOG option should not be enabled on systems
624ae3d6bfaSColin Percival# used in production.
625ae3d6bfaSColin Percival#
626ae3d6bfaSColin Percivaloptions 	TSLOG
627ae3d6bfaSColin Percivaloptions 	TSLOGSIZE=262144
628ae3d6bfaSColin Percival
6296a8d6623SGarrett Wollman
6306a8d6623SGarrett Wollman#####################################################################
631d47cce3eSMarcel Moolenaar# PERFORMANCE MONITORING OPTIONS
632d47cce3eSMarcel Moolenaar
633d47cce3eSMarcel Moolenaar#
634d47cce3eSMarcel Moolenaar# The hwpmc driver that allows the use of in-CPU performance monitoring
6359c0ef6d5SOliver Fromme# counters for performance monitoring.  The base kernel needs to be configured
636d47cce3eSMarcel Moolenaar# with the 'options' line, while the hwpmc device can be either compiled
637d47cce3eSMarcel Moolenaar# in or loaded as a loadable kernel module.
638d47cce3eSMarcel Moolenaar#
639ad3869b4SJoseph Koshy# Additional configuration options may be required on specific architectures,
640ad3869b4SJoseph Koshy# please see hwpmc(4).
641ad3869b4SJoseph Koshy
642d47cce3eSMarcel Moolenaardevice		hwpmc			# Driver (also a loadable module)
643680f1afdSJohn Baldwinoptions 	HWPMC_DEBUG
644d47cce3eSMarcel Moolenaaroptions 	HWPMC_HOOKS		# Other necessary kernel hooks
645d47cce3eSMarcel Moolenaar
646d47cce3eSMarcel Moolenaar
647d47cce3eSMarcel Moolenaar#####################################################################
6486a8d6623SGarrett Wollman# NETWORKING OPTIONS
64970c0b54cSAndrey A. Chernov
6506a8d6623SGarrett Wollman#
651a22fb0daSGeorge V. Neville-Neil# Protocol families
6526a8d6623SGarrett Wollman#
6536a8d6623SGarrett Wollmanoptions 	INET			#Internet communications protocols
65451f4c152SYoshinobu Inoueoptions 	INET6			#IPv6 communications protocols
655b8d60729SRandall Stewart#
656b8d60729SRandall Stewart# Note if you include INET/INET6 or both options
657b8d60729SRandall Stewart# You *must* define at least one of the congestion control
658bb1d472dSRichard Scheffenegger# options or the compile will fail. GENERIC defines
659bb1d472dSRichard Scheffenegger# options CC_CUBIC. You may want to specify a default
660bb1d472dSRichard Scheffenegger# if multiple congestion controls are compiled in.
661bb1d472dSRichard Scheffenegger# The string in default is the name of the
662b8d60729SRandall Stewart# cc module as it would appear in the sysctl for
663bb1d472dSRichard Scheffenegger# setting the default. The code defines CUBIC
664bb1d472dSRichard Scheffenegger# as default, or the sole cc_module compiled in.
665b8d60729SRandall Stewart#
666b8d60729SRandall Stewartoptions 	CC_CDG
667b8d60729SRandall Stewartoptions 	CC_CHD
668b8d60729SRandall Stewartoptions 	CC_CUBIC
669b8d60729SRandall Stewartoptions 	CC_DCTCP
670b8d60729SRandall Stewartoptions 	CC_HD
671b8d60729SRandall Stewartoptions 	CC_HTCP
672b8d60729SRandall Stewartoptions 	CC_NEWRENO
673b8d60729SRandall Stewartoptions 	CC_VEGAS
674bb1d472dSRichard Scheffeneggeroptions 	CC_DEFAULT=\"cubic\"
675f3e7afe2SHans Petter Selaskyoptions 	RATELIMIT		# TX rate limiting support
676f3e7afe2SHans Petter Selasky
6774871fc4aSJulian Elischeroptions 	ROUTETABLES=2		# allocated fibs up to 65536. default is 1.
6784871fc4aSJulian Elischer					# but that would be a bad idea as they are large.
6798b07e49aSJulian Elischer
68009fe6320SNavdeep Parharoptions 	TCP_OFFLOAD		# TCP offload support.
681cca72379SWarner Loshoptions  	TCP_RFC7413		# TCP Fast Open
68209fe6320SNavdeep Parhar
68346033610SMatt Macyoptions  	TCPHPTS
68446033610SMatt Macy
685a22fb0daSGeorge V. Neville-Neil# In order to enable IPSEC you MUST also add device crypto to
686a22fb0daSGeorge V. Neville-Neil# your kernel configuration
687a22fb0daSGeorge V. Neville-Neiloptions 	IPSEC			#IP security (requires device crypto)
688fcf59617SAndrey V. Elsukov
689fcf59617SAndrey V. Elsukov# Option IPSEC_SUPPORT does not enable IPsec, but makes it possible to
690fcf59617SAndrey V. Elsukov# load it as a kernel module. You still MUST add device crypto to your kernel
691fcf59617SAndrey V. Elsukov# configuration.
692fcf59617SAndrey V. Elsukovoptions 	IPSEC_SUPPORT
6932cb64cb2SGeorge V. Neville-Neil#options 	IPSEC_DEBUG		#debug for IP security
694f73bbaf2SDavid Greenman
6953a338c53SDag-Erling Smørgrav# Alternative TCP stacks
6963a338c53SDag-Erling Smørgravoptions 	TCP_BBR
6973a338c53SDag-Erling Smørgravoptions 	TCP_RACK
698b2e60773SJohn Baldwin
699efa9c21bSAndrew Gallatin# TLS framing and encryption/decryption of data over TCP sockets.
700efa9c21bSAndrew Gallatinoptions 	KERN_TLS		# TLS transmit and receive offload
701b2e60773SJohn Baldwin
702c9313a0bSAlexander V. Chernikov# Netlink kernel/user<>kernel/user messaging interface
703c9313a0bSAlexander V. Chernikovoptions 	NETLINK
704c9313a0bSAlexander V. Chernikov
705237abf0cSDavide Italiano#
706237abf0cSDavide Italiano# SMB/CIFS requester
707237abf0cSDavide Italiano# NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
708237abf0cSDavide Italiano# options.
709237abf0cSDavide Italianooptions 	NETSMB			#SMB/CIFS requester
710237abf0cSDavide Italiano
711d8589bd5SBoris Popov# mchain library. It can be either loaded as KLD or compiled into kernel
712d8589bd5SBoris Popovoptions 	LIBMCHAIN
713d8589bd5SBoris Popov
7146cd047a0SGleb Smirnoff# libalias library, performing NAT
7156cd047a0SGleb Smirnoffoptions 	LIBALIAS
7166cd047a0SGleb Smirnoff
717f8829a4aSRandall Stewart#
718f8829a4aSRandall Stewart# SCTP is a NEW transport protocol defined by
719f8829a4aSRandall Stewart# RFC2960 updated by RFC3309 and RFC3758.. and
720f8829a4aSRandall Stewart# soon to have a new base RFC and many many more
721f8829a4aSRandall Stewart# extensions. This release supports all the extensions
722f8829a4aSRandall Stewart# including many drafts (most about to become RFC's).
7239c0ef6d5SOliver Fromme# It is the reference implementation of SCTP
724f8829a4aSRandall Stewart# and is quite well tested.
725f8829a4aSRandall Stewart#
726f8829a4aSRandall Stewart# Note YOU MUST have both INET and INET6 defined.
7279c0ef6d5SOliver Fromme# You don't have to enable V6, but SCTP is
7289c0ef6d5SOliver Fromme# dual stacked and so far we have not torn apart
729f8829a4aSRandall Stewart# the V6 and V4.. since an association can span
730f8829a4aSRandall Stewart# both a V6 and V4 address at the SAME time :-)
731f8829a4aSRandall Stewart#
73295033af9SMark Johnston# The SCTP_SUPPORT option does not enable SCTP, but provides the necessary
73395033af9SMark Johnston# support for loading SCTP as a loadable kernel module.
73495033af9SMark Johnston#
735f8829a4aSRandall Stewartoptions 	SCTP
73695033af9SMark Johnstonoptions 	SCTP_SUPPORT
73795033af9SMark Johnston
738f8829a4aSRandall Stewart# There are bunches of options:
739f8829a4aSRandall Stewart# this one turns on all sorts of
740d51e8487SJosh Paetzel# nastily printing that you can
7419c0ef6d5SOliver Fromme# do. It's all controlled by a
742f8829a4aSRandall Stewart# bit mask (settable by socket opt and
743f8829a4aSRandall Stewart# by sysctl). Including will not cause
744f8829a4aSRandall Stewart# logging until you set the bits.. but it
745f8829a4aSRandall Stewart# can be quite verbose.. so without this
746f8829a4aSRandall Stewart# option we don't do any of the tests for
747f8829a4aSRandall Stewart# bits and prints.. which makes the code run
748f8829a4aSRandall Stewart# faster.. if you are not debugging don't use.
749f8829a4aSRandall Stewartoptions 	SCTP_DEBUG
75095033af9SMark Johnston
751f8829a4aSRandall Stewart#
752f8829a4aSRandall Stewart# All that options after that turn on specific types of
753f8829a4aSRandall Stewart# logging. You can monitor CWND growth, flight size
754f8829a4aSRandall Stewart# and all sorts of things. Go look at the code and
755f8829a4aSRandall Stewart# see. I have used this to produce interesting
756f8829a4aSRandall Stewart# charts and graphs as well :->
757f8829a4aSRandall Stewart#
7589c0ef6d5SOliver Fromme# I have not yet committed the tools to get and print
759f8829a4aSRandall Stewart# the logs, I will do that eventually .. before then
760f8829a4aSRandall Stewart# if you want them send me an email rrs@freebsd.org
761f7e95633SRuslan Ermilov# You basically must have ktr(4) enabled for these
762cb7a4976SRandall Stewart# and you then set the sysctl to turn on/off various
763f7e95633SRuslan Ermilov# logging bits. Use ktrdump(8) to pull the log and run
7649c0ef6d5SOliver Fromme# it through a display program.. and graphs and other
765cb7a4976SRandall Stewart# things too.
766f8829a4aSRandall Stewart#
767f8829a4aSRandall Stewartoptions 	SCTP_LOCK_LOGGING
768f8829a4aSRandall Stewartoptions 	SCTP_MBUF_LOGGING
769cb7a4976SRandall Stewartoptions 	SCTP_MBCNT_LOGGING
770cb7a4976SRandall Stewartoptions 	SCTP_PACKET_LOGGING
771cb7a4976SRandall Stewartoptions 	SCTP_LTRACE_CHUNKS
772cb7a4976SRandall Stewartoptions 	SCTP_LTRACE_ERRORS
773cb7a4976SRandall Stewart
774973d3a82SJohn Baldwin# OpenFabrics Enterprise Distribution (Infiniband).
775973d3a82SJohn Baldwinoptions 	OFED
776973d3a82SJohn Baldwinoptions 	OFED_DEBUG_INIT
777973d3a82SJohn Baldwin
778973d3a82SJohn Baldwin# Sockets Direct Protocol
779973d3a82SJohn Baldwinoptions 	SDP
780973d3a82SJohn Baldwinoptions 	SDP_DEBUG
781973d3a82SJohn Baldwin
782973d3a82SJohn Baldwin# IP over Infiniband
783973d3a82SJohn Baldwinoptions 	IPOIB
784973d3a82SJohn Baldwinoptions 	IPOIB_DEBUG
785973d3a82SJohn Baldwinoptions 	IPOIB_CM
786973d3a82SJohn Baldwin
78702b199f1SMax Laier# altq(9). Enable the base part of the hooks with the ALTQ option.
78802b199f1SMax Laier# Individual disciplines must be built into the base system and can not be
789cceffdeeSAndrew Thompson# loaded as modules at this point. ALTQ requires a stable TSC so if yours is
790cceffdeeSAndrew Thompson# broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
791cceffdeeSAndrew Thompson# option.
79202b199f1SMax Laieroptions 	ALTQ
793755911cdSGreg Leheyoptions 	ALTQ_CBQ	# Class Based Queueing
794c7219167SMax Laieroptions 	ALTQ_RED	# Random Early Detection
79502b199f1SMax Laieroptions 	ALTQ_RIO	# RED In/Out
796a13bfb09SLuiz Otavio O Souzaoptions 	ALTQ_CODEL	# CoDel Active Queueing
79702b199f1SMax Laieroptions 	ALTQ_HFSC	# Hierarchical Packet Scheduler
798a5b789f6SErmal Luçioptions 	ALTQ_FAIRQ	# Fair Packet Scheduler
79902b199f1SMax Laieroptions 	ALTQ_CDNR	# Traffic conditioner
8003c7c6c12SMike Pritchardoptions 	ALTQ_PRIQ	# Priority Queueing
801cceffdeeSAndrew Thompsonoptions 	ALTQ_NOPCC	# Required if the TSC is unusable
80202b199f1SMax Laieroptions 	ALTQ_DEBUG
80302b199f1SMax Laier
8044cf49a43SJulian Elischer# netgraph(4). Enable the base netgraph code with the NETGRAPH option.
8054cf49a43SJulian Elischer# Individual node types can be enabled with the corresponding option
8064cf49a43SJulian Elischer# listed below; however, this is not strictly necessary as netgraph
8074cf49a43SJulian Elischer# will automatically load the corresponding KLD module if the node type
80892a3e552SArchie Cobbs# is not already compiled into the kernel. Each type below has a
80992a3e552SArchie Cobbs# corresponding man page, e.g., ng_async(8).
8104cf49a43SJulian Elischeroptions 	NETGRAPH		# netgraph(4) system
81173e87266SGleb Smirnoffoptions 	NETGRAPH_DEBUG		# enable extra debugging, this
81273e87266SGleb Smirnoff					# affects netgraph(4) and nodes
81373e87266SGleb Smirnoff# Node types
8144cf49a43SJulian Elischeroptions 	NETGRAPH_ASYNC
815b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH		# ng_bluetooth(4)
816b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH_HCI		# ng_hci(4)
817b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH_L2CAP	# ng_l2cap(4)
818b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH_SOCKET	# ng_btsocket(4)
819b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH_UBT		# ng_ubt(4)
820b84b10f9SMaksim Yevmenkinoptions 	NETGRAPH_BLUETOOTH_UBTBCMFW	# ubtbcmfw(4)
82192a3e552SArchie Cobbsoptions 	NETGRAPH_BPF
822901fadf7SArchie Cobbsoptions 	NETGRAPH_BRIDGE
8237d3b4a08SAlexander Motinoptions 	NETGRAPH_CAR
824b9e0c8c2SMaxim Sobolevoptions 	NETGRAPH_CHECKSUM
8254cf49a43SJulian Elischeroptions 	NETGRAPH_CISCO
8269e6f1d3bSGleb Smirnoffoptions 	NETGRAPH_DEFLATE
82731578ac8SGleb Smirnoffoptions 	NETGRAPH_DEVICE
8284cf49a43SJulian Elischeroptions 	NETGRAPH_ECHO
8299d564133SRobert Watsonoptions 	NETGRAPH_EIFACE
83046aa8b9bSArchie Cobbsoptions 	NETGRAPH_ETHER
8314cf49a43SJulian Elischeroptions 	NETGRAPH_FRAME_RELAY
83237379158SBrooks Davisoptions 	NETGRAPH_GIF
83337379158SBrooks Davisoptions 	NETGRAPH_GIF_DEMUX
8344cf49a43SJulian Elischeroptions 	NETGRAPH_HOLE
8354cf49a43SJulian Elischeroptions 	NETGRAPH_IFACE
83637379158SBrooks Davisoptions 	NETGRAPH_IP_INPUT
837f2a7ef4eSGleb Smirnoffoptions 	NETGRAPH_IPFW
83848e94174SArchie Cobbsoptions 	NETGRAPH_KSOCKET
839901fadf7SArchie Cobbsoptions 	NETGRAPH_L2TP
8404cf49a43SJulian Elischeroptions 	NETGRAPH_LMI
841ec5753e0SPedro F. Giffunioptions 	NETGRAPH_MPPC_COMPRESSION
842a2b408adSArchie Cobbsoptions 	NETGRAPH_MPPC_ENCRYPTION
843cec50deaSGleb Smirnoffoptions 	NETGRAPH_NETFLOW
8446cd047a0SGleb Smirnoffoptions 	NETGRAPH_NAT
8457d7a5b89SArchie Cobbsoptions 	NETGRAPH_ONE2MANY
846d05181f9SAndrey V. Elsukovoptions 	NETGRAPH_PATCH
847991633afSMarko Zecoptions 	NETGRAPH_PIPE
848b0801bacSArchie Cobbsoptions 	NETGRAPH_PPP
849b0801bacSArchie Cobbsoptions 	NETGRAPH_PPPOE
850add85a1dSArchie Cobbsoptions 	NETGRAPH_PPTPGRE
8519e6f1d3bSGleb Smirnoffoptions 	NETGRAPH_PRED1
8524cf49a43SJulian Elischeroptions 	NETGRAPH_RFC1490
853b0801bacSArchie Cobbsoptions 	NETGRAPH_SOCKET
8544d60fee2SBrooks Davisoptions 	NETGRAPH_SPLIT
855d473c9d5SGleb Smirnoffoptions 	NETGRAPH_TAG
856e9110049SGleb Smirnoffoptions 	NETGRAPH_TCPMSS
8574cf49a43SJulian Elischeroptions 	NETGRAPH_TEE
8584cf49a43SJulian Elischeroptions 	NETGRAPH_UI
859b58a8a3bSJulian Elischeroptions 	NETGRAPH_VJC
860b4263060SRuslan Ermilovoptions 	NETGRAPH_VLAN
861666ea1b6SMaksim Yevmenkin
8620990ef0aSKevin Lo# Network stack virtualization.
8638e94025bSBjoern A. Zeeboptions 	VIMAGE
8648e94025bSBjoern A. Zeeboptions 	VNET_DEBUG	# debug for VIMAGE
8650990ef0aSKevin Lo
8666a8d6623SGarrett Wollman#
8676a8d6623SGarrett Wollman# Network interfaces:
868f71c01ccSPeter Wemm#  The `loop' device is MANDATORY when networking is enabled.
86936782d14SWojciech A. Koszekdevice		loop
87036782d14SWojciech A. Koszek
871f71c01ccSPeter Wemm#  The `ether' device provides generic code to handle
8729d5abbddSJens Schweikhardt#  Ethernets; it is MANDATORY when an Ethernet device driver is
87369f0fecbSBrooks Davis#  configured.
87436782d14SWojciech A. Koszekdevice		ether
87536782d14SWojciech A. Koszek
876fc67901fSYaroslav Tykhiy#  The `vlan' device implements the VLAN tagging of Ethernet frames
8779d9ab10eSAntoine Brodin#  according to IEEE 802.1Q.
87836782d14SWojciech A. Koszekdevice		vlan
87936782d14SWojciech A. Koszek
880007054f0SBryan Venteicher# The `vxlan' device implements the VXLAN encapsulation of Ethernet
881007054f0SBryan Venteicher# frames in UDP packets according to RFC7348.
882007054f0SBryan Venteicherdevice		vxlan
883007054f0SBryan Venteicher
88457a42501SGarrett Wollman#  The `wlan' device provides generic code to support 802.11
88567e4db77SSam Leffler#  drivers, including host AP mode; it is MANDATORY for the wi,
886f4463607SSam Leffler#  and ath drivers and will eventually be required by all 802.11 drivers.
88736782d14SWojciech A. Koszekdevice		wlan
88836782d14SWojciech A. Koszekoptions 	IEEE80211_DEBUG		#enable debugging msgs
8899c3fd2c1SJohn Baldwinoptions 	IEEE80211_DEBUG_REFCNT
89059aa14a9SRui Paulooptions 	IEEE80211_SUPPORT_MESH	#enable 802.11s D3.0 support
89159aa14a9SRui Paulooptions 	IEEE80211_SUPPORT_TDMA	#enable TDMA support
89236782d14SWojciech A. Koszek
89367e4db77SSam Leffler#  The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
89467e4db77SSam Leffler#  support for WEP, TKIP, and AES-CCMP crypto protocols optionally
89567e4db77SSam Leffler#  used with 802.11 devices that depend on the `wlan' module.
89636782d14SWojciech A. Koszekdevice		wlan_wep
89736782d14SWojciech A. Koszekdevice		wlan_ccmp
89836782d14SWojciech A. Koszekdevice		wlan_tkip
89936782d14SWojciech A. Koszek
90067e4db77SSam Leffler#  The `wlan_xauth' device provides support for external (i.e. user-mode)
90167e4db77SSam Leffler#  authenticators for use with 802.11 drivers that use the `wlan'
90234341a71SJohn Baldwin#  module and support 802.1x and/or WPA security protocols.
90336782d14SWojciech A. Koszekdevice		wlan_xauth
90436782d14SWojciech A. Koszek
90567e4db77SSam Leffler#  The `wlan_acl' device provides a MAC-based access control mechanism
90667e4db77SSam Leffler#  for use with 802.11 drivers operating in ap mode and using the
90767e4db77SSam Leffler#  `wlan' module.
90836782d14SWojciech A. Koszek#  The 'wlan_amrr' device provides AMRR transmit rate control algorithm
90936782d14SWojciech A. Koszekdevice		wlan_acl
91036782d14SWojciech A. Koszekdevice		wlan_amrr
91136782d14SWojciech A. Koszek
912f71c01ccSPeter Wemm#  The `bpf' device enables the Berkeley Packet Filter.  Be
913d29895dcSGarrett Wollman#  aware of the legal and administrative consequences of enabling this
9149c0ef6d5SOliver Fromme#  option.  DHCP requires bpf.
91536782d14SWojciech A. Koszekdevice		bpf
91636782d14SWojciech A. Koszek
917e4b68814SLuigi Rizzo#  The `netmap' device implements memory-mapped access to network
918e4b68814SLuigi Rizzo#  devices from userspace, enabling wire-speed packet capture and
919e4b68814SLuigi Rizzo#  generation even at 10Gbit/s. Requires support in the device
920e4b68814SLuigi Rizzo#  driver. Supported drivers are ixgbe, e1000, re.
921e4b68814SLuigi Rizzodevice		netmap
922e4b68814SLuigi Rizzo
923f71c01ccSPeter Wemm#  The `disc' device implements a minimal network interface,
92459d8d13fSGarrett Wollman#  which throws away all packets sent and never receives any.  It is
92570e04181SYaroslav Tykhiy#  included for testing and benchmarking purposes.
92636782d14SWojciech A. Koszekdevice		disc
92736782d14SWojciech A. Koszek
928d0ea4743SBjoern A. Zeeb# The `epair' device implements a virtual back-to-back connected Ethernet
929d0ea4743SBjoern A. Zeeb# like interface pair.
930d0ea4743SBjoern A. Zeebdevice		epair
931d0ea4743SBjoern A. Zeeb
93263518eccSYaroslav Tykhiy#  The `edsc' device implements a minimal Ethernet interface,
93363518eccSYaroslav Tykhiy#  which discards all packets sent and receives none.
93436782d14SWojciech A. Koszekdevice		edsc
93536782d14SWojciech A. Koszek
936251a32b5SKyle Evans#  The `tuntap' device implements (user-)ppp, nos-tun(8) and a pty-like virtual
937251a32b5SKyle Evans#  Ethernet interface
938251a32b5SKyle Evansdevice		tuntap
93936782d14SWojciech A. Koszek
940f71c01ccSPeter Wemm#  The `gif' device implements IPv6 over IP4 tunneling,
941cfa1ca9dSYoshinobu Inoue#  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
942cfa1ca9dSYoshinobu Inoue#  IPv6 over IPv6 tunneling.
943f325335cSAndrey V. Elsukov#  The `gre' device implements GRE (Generic Routing Encapsulation) tunneling,
944f325335cSAndrey V. Elsukov#  as specified in the RFC 2784 and RFC 2890.
945f325335cSAndrey V. Elsukov#  The `me' device implements Minimal Encapsulation within IPv4 as
946f325335cSAndrey V. Elsukov#  specified in the RFC 2004.
947f57fc21cSJeroen Ruigrok van der Werven#  The XBONEHACK option allows the same pair of addresses to be configured on
948f57fc21cSJeroen Ruigrok van der Werven#  multiple gif interfaces.
94936782d14SWojciech A. Koszekdevice		gif
95036782d14SWojciech A. Koszekdevice		gre
951f325335cSAndrey V. Elsukovdevice		me
95236782d14SWojciech A. Koszekoptions 	XBONEHACK
95336782d14SWojciech A. Koszek
954d5015639SMunechika SUMIKAWA#  The `stf' device implements 6to4 encapsulation.
95536782d14SWojciech A. Koszekdevice		stf
95636782d14SWojciech A. Koszek
9578d69c48bSMax Laier# The pf packet filter consists of three devices:
9588d69c48bSMax Laier#  The `pf' device provides /dev/pf and the firewall code itself.
9598d69c48bSMax Laier#  The `pflog' device provides the pflog0 interface which logs packets.
9608d69c48bSMax Laier#  The `pfsync' device provides the pfsync0 interface used for
9618d69c48bSMax Laier#   synchronization of firewall state tables (over the net).
96236782d14SWojciech A. Koszekdevice		pf
96336782d14SWojciech A. Koszekdevice		pflog
96436782d14SWojciech A. Koszekdevice		pfsync
96536782d14SWojciech A. Koszek
96636782d14SWojciech A. Koszek# Bridge interface.
96736782d14SWojciech A. Koszekdevice		if_bridge
96836782d14SWojciech A. Koszek
96936782d14SWojciech A. Koszek# Common Address Redundancy Protocol. See carp(4) for more details.
97036782d14SWojciech A. Koszekdevice		carp
97136782d14SWojciech A. Koszek
97236782d14SWojciech A. Koszek# IPsec interface.
97336782d14SWojciech A. Koszekdevice		enc
97436782d14SWojciech A. Koszek
97536782d14SWojciech A. Koszek# Link aggregation interface.
97636782d14SWojciech A. Koszekdevice		lagg
97736782d14SWojciech A. Koszek
978744bfb21SJohn Baldwin# WireGuard interface.
979744bfb21SJohn Baldwindevice		wg
980744bfb21SJohn Baldwin
9818d69c48bSMax Laier#
9826a8d6623SGarrett Wollman# Internet family options:
9836a8d6623SGarrett Wollman#
9846a8d6623SGarrett Wollman# MROUTING enables the kernel multicast packet forwarder, which works
9850948f0a2SBruce M Simpson# with mrouted and XORP.
986e0f688baSJeffrey Hsu#
987d29895dcSGarrett Wollman# IPFIREWALL enables support for IP firewall construction, in
988ff6f025aSAlexander Langer# conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
989ff6f025aSAlexander Langer# logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
990ff6f025aSAlexander Langer# limits the number of times a matching entry can be logged.
991ab6e02daSJordan K. Hubbard#
992ab6e02daSJordan K. Hubbard# WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
993ab6e02daSJordan K. Hubbard# and if you do not add other rules during startup to allow access,
994a236d14cSJordan K. Hubbard# YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
995ab6e02daSJordan K. Hubbard# in /etc/rc.conf when first enabling this feature, then refining the
996ab6e02daSJordan K. Hubbard# firewall rules in /etc/rc.firewall after you've tested that the new kernel
997ab6e02daSJordan K. Hubbard# feature works properly.
9988dd4744eSJordan K. Hubbard#
999ffdd472dSPeter Wemm# IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
1000ffdd472dSPeter Wemm# allow everything.  Use with care, if a cracker can crash your
1001ffdd472dSPeter Wemm# firewall machine, they can get to your protected machines.  However,
1002ffdd472dSPeter Wemm# if you are using it as an as-needed filter for specific problems as
1003ffdd472dSPeter Wemm# they arise, then this may be for you.  Changing the default to 'allow'
1004ffdd472dSPeter Wemm# means that you won't get stuck if the kernel and /sbin/ipfw binary get
1005ffdd472dSPeter Wemm# out of sync.
1006d29895dcSGarrett Wollman#
100784bb6a2eSAndre Oppermann# IPDIVERT enables the divert IP sockets, used by ``ipfw divert''.  It
100884bb6a2eSAndre Oppermann# depends on IPFIREWALL if compiled into the kernel.
100993e0e116SJulian Elischer#
101061c0e134SPaolo Pisati# IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
1011531c890bSPaolo Pisati# LIBALIAS.
101261c0e134SPaolo Pisati#
1013d8caf56eSAndrey V. Elsukov# IPFIREWALL_NAT64 adds support for in kernel NAT64 in ipfw.
1014d8caf56eSAndrey V. Elsukov#
1015b867e84eSAndrey V. Elsukov# IPFIREWALL_NPTV6 adds support for in kernel NPTv6 in ipfw.
1016b867e84eSAndrey V. Elsukov#
1017aac74aeaSAndrey V. Elsukov# IPFIREWALL_PMOD adds support for protocols modification module. Currently
1018aac74aeaSAndrey V. Elsukov# it supports only TCP MSS modification.
1019aac74aeaSAndrey V. Elsukov#
10201b968362SDag-Erling Smørgrav# IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
10211c9c6382SRuslan Ermilov# packets without touching the TTL).  This can be useful to hide firewalls
10221b968362SDag-Erling Smørgrav# from traceroute and similar tools.
10231b968362SDag-Erling Smørgrav#
10247f7ef494SGleb Smirnoff# PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
10257f7ef494SGleb Smirnoff#
102686a996e6SHiren Panchasara# TCPPCAP enables code which keeps the last n packets sent and received
102786a996e6SHiren Panchasara# on a TCP socket.
102886a996e6SHiren Panchasara#
1029e24e5683SJonathan T. Looney# TCP_BLACKBOX enables enhanced TCP event logging.
1030e24e5683SJonathan T. Looney#
1031bd79708dSJonathan T. Looney# TCP_HHOOK enables the hhook(9) framework hooks for the TCP stack.
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
1053fedeb08bSAlexander V. Chernikovoptions 	ROUTE_MPATH
10546a8d6623SGarrett Wollman
105553dcc544SMike Silbersack# The MBUF_STRESS_TEST option enables options which create
105653dcc544SMike Silbersack# various random failures / extreme cases related to mbuf
1057f8f8803bSBruce Evans# functions.  See mbuf(9) for a list of available test cases.
10584e77d255SJulian Elischer# MBUF_PROFILING enables code to profile the mbuf chains
10596eeac1d9SJulian Elischer# exiting the system (via participating interfaces) and
10606eeac1d9SJulian Elischer# return a logarithmic histogram of monitored parameters
10616eeac1d9SJulian Elischer# (e.g. packet size, wasted space, number of mbufs in chain).
106253dcc544SMike Silbersackoptions 	MBUF_STRESS_TEST
10636eeac1d9SJulian Elischeroptions 	MBUF_PROFILING
10644a5ccac7SMike Silbersack
10659c0ef6d5SOliver Fromme# Statically link in accept filters
1066a79b7128SAlfred Perlsteinoptions 	ACCEPT_FILTER_DATA
1067744eaff7SDavid Maloneoptions 	ACCEPT_FILTER_DNS
1068a79b7128SAlfred Perlsteinoptions 	ACCEPT_FILTER_HTTP
1069a79b7128SAlfred Perlstein
1070b52f8407SBruce M Simpson# TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
1071b52f8407SBruce M Simpson# carried in TCP option 19. This option is commonly used to protect
1072b52f8407SBruce M Simpson# TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
1073b52f8407SBruce M Simpson# This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
1074fcf59617SAndrey V. Elsukov# This requires the use of 'device crypto' and either 'options IPSEC' or
1075fcf59617SAndrey V. Elsukov# 'options IPSEC_SUPPORT'.
10765164136dSBjoern A. Zeeboptions 	TCP_SIGNATURE		#include support for RFC 2385
1077b52f8407SBruce M Simpson
1078f8f8803bSBruce Evans# DUMMYNET enables the "dummynet" bandwidth limiter.  You need IPFIREWALL
1079f8f8803bSBruce Evans# as well.  See dummynet(4) and ipfw(8) for more info.  When you run
10800f882bb1SWarner Losh# DUMMYNET, HZ/kern.hz should be at least 1000 for adequate response.
108168ec4eb6SLuigi Rizzooptions 	DUMMYNET
108268e9d934SLuigi Rizzo
1083dda17b36SConrad Meyer# The DEBUGNET option enables a basic debug/panic-time networking API.  It
1084dda17b36SConrad Meyer# is used by NETDUMP and NETGDB.
1085dda17b36SConrad Meyeroptions 	DEBUGNET
1086dda17b36SConrad Meyer
1087e5054602SMark Johnston# The NETDUMP option enables netdump(4) client support in the kernel.
1088e5054602SMark Johnston# This allows a panicking kernel to transmit a kernel dump to a remote host.
1089e5054602SMark Johnstonoptions 	NETDUMP
1090e5054602SMark Johnston
1091dda17b36SConrad Meyer# The NETGDB option enables netgdb(4) support in the kernel.  This allows a
1092dda17b36SConrad Meyer# panicking kernel to be debugged as a GDB remote over the network.
1093dda17b36SConrad Meyeroptions 	NETGDB
10947790c8c1SConrad Meyer
10956a8d6623SGarrett Wollman#####################################################################
10966a8d6623SGarrett Wollman# FILESYSTEM OPTIONS
1097e3178a06SJordan K. Hubbard
10982365e64fSRodney W. Grimes#
10993f850e6aSKonstantin Belousov# Only the root filesystem needs to be statically compiled or preloaded
11003f850e6aSKonstantin Belousov# as module; everything else will be automatically loaded at mount
11013f850e6aSKonstantin Belousov# time.  Some people still prefer to statically compile other
11023f850e6aSKonstantin Belousov# filesystems as well.
11036a8d6623SGarrett Wollman#
110455793cdcSAttilio Rao# NB: The UNION filesystem was known to be buggy in the past.  It is now
1105534046e3SRong-En Fan# being actively maintained, although there are still some issues being
1106534046e3SRong-En Fan# resolved.
11072365e64fSRodney W. Grimes#
1108f1a9c715SDavid Greenman
11096a8d6623SGarrett Wollman# One of these is mandatory:
11106a8d6623SGarrett Wollmanoptions 	FFS			#Fast filesystem
1111c15882f0SRick Macklemoptions 	NFSCL			#Network File System client
11126a8d6623SGarrett Wollman
11136a8d6623SGarrett Wollman# The rest are optional:
11143914ddf8SEdward Tomasz Napieralaoptions 	AUTOFS			#Automounter filesystem
11155895e3c8SPeter Wemmoptions 	CD9660			#ISO 9660 filesystem
111699d300a1SRuslan Ermilovoptions 	FDESCFS			#File descriptor filesystem
1117123af6ecSAlan Somersoptions 	FUSEFS			#FUSEFS support module
1118dba11ce5SAlexander Langeroptions 	MSDOSFS			#MS DOS File System (FAT, FAT32)
1119dfdcada3SDoug Rabsonoptions 	NFSLOCKD		#Network Lock Manager
11203e32dff5SJohn Baldwinoptions 	NFSD			#Network Filesystem Server
11219c0ef6d5SOliver Frommeoptions 	KGSSAPI			#Kernel GSSAPI implementation
11221bea7c61SMaxim Sobolev
1123f1a9c715SDavid Greenmanoptions 	NULLFS			#NULL filesystem
11244d2647f9SDag-Erling Smørgravoptions 	PROCFS			#Process filesystem (requires PSEUDOFS)
112552ebde4fSDag-Erling Smørgravoptions 	PSEUDOFS		#Pseudo-filesystem framework
1126bcc1205cSDag-Erling Smørgravoptions 	PSEUDOFS_TRACE		#Debugging support for PSEUDOFS
1127237abf0cSDavide Italianooptions 	SMBFS			#SMB/CIFS filesystem
112878920d0fSKevin Looptions 	TMPFS			#Efficient memory filesystem
1129df263cbdSScott Longoptions 	UDF			#Universal Disk Format
113099d300a1SRuslan Ermilovoptions 	UNIONFS			#Union filesystem
1131bcf77694SPeter Wemm# The xFS_ROOT options REQUIRE the associated ``options xFS''
1132bcf77694SPeter Wemmoptions 	NFS_ROOT		#NFS usable as root device
1133f1a9c715SDavid Greenman
1134d0a28bafSAlexander Langer# Soft updates is a technique for improving filesystem speed and
1135d61e6649SAlexander Langer# making abrupt shutdown less risky.
1136f8f8d7afSEivind Eklund#
11373d5c4fdcSPoul-Henning Kampoptions 	SOFTUPDATES
1138b1897c19SJulian Elischer
1139a64ed089SRobert Watson# Extended attributes allow additional data to be associated with files,
114051be6918SChris D. Faulhaber# and is used for ACLs, Capabilities, and MAC labels.
114151be6918SChris D. Faulhaber# See src/sys/ufs/ufs/README.extattr for more information.
114249993db0SRobert Watsonoptions 	UFS_EXTATTR
114349993db0SRobert Watsonoptions 	UFS_EXTATTR_AUTOSTART
1144a64ed089SRobert Watson
114551be6918SChris D. Faulhaber# Access Control List support for UFS filesystems.  The current ACL
114651be6918SChris D. Faulhaber# implementation requires extended attribute support, UFS_EXTATTR,
114751be6918SChris D. Faulhaber# for the underlying filesystem.
114851be6918SChris D. Faulhaber# See src/sys/ufs/ufs/README.acls for more information.
114951be6918SChris D. Faulhaberoptions 	UFS_ACL
115051be6918SChris D. Faulhaber
11519b5ad47fSIan Dowse# Directory hashing improves the speed of operations on very large
11529b5ad47fSIan Dowse# directories at the expense of some memory.
11539b5ad47fSIan Dowseoptions 	UFS_DIRHASH
11549b5ad47fSIan Dowse
1155f348204cSPawel Jakub Dawidek# Gjournal-based UFS journaling support.
1156f348204cSPawel Jakub Dawidekoptions 	UFS_GJOURNAL
1157f348204cSPawel Jakub Dawidek
115871e4fff8SPoul-Henning Kamp# Make space in the kernel for a root filesystem on a md device.
115971e4fff8SPoul-Henning Kamp# Define to the number of kilobytes to reserve for the filesystem.
1160f4c1f0b9SAdrian Chadd# This is now optional.
1161f4c1f0b9SAdrian Chadd# If not defined, the root filesystem passed in as the MFS_IMAGE makeoption
1162f4c1f0b9SAdrian Chadd# will be automatically embedded in the kernel during linking. Its exact size
1163f4c1f0b9SAdrian Chadd# will be consumed within the kernel.
1164f4c1f0b9SAdrian Chadd# If defined, the old way of embedding the filesystem in the kernel will be
1165f4c1f0b9SAdrian Chadd# used. That is to say MD_ROOT_SIZE KB will be allocated in the kernel and
1166f4c1f0b9SAdrian Chadd# later, the filesystem image passed in as the MFS_IMAGE makeoption will be
1167f4c1f0b9SAdrian Chadd# dd'd into the reserved space if it fits.
116871e4fff8SPoul-Henning Kampoptions 	MD_ROOT_SIZE=10
116971e4fff8SPoul-Henning Kamp
117071e4fff8SPoul-Henning Kamp# Make the md device a potential root device, either with preloaded
117171e4fff8SPoul-Henning Kamp# images of type mfs_root or md_root.
117271e4fff8SPoul-Henning Kampoptions 	MD_ROOT
1173d52d7365SPoul-Henning Kamp
11745cf10fb9SIan Lepore# Write-protect the md root device so that it may not be mounted writeable.
11755cf10fb9SIan Leporeoptions 	MD_ROOT_READONLY
11765cf10fb9SIan Lepore
11777b2c7b92SBreno Leitao# Allow to read MD image from external memory regions
11787b2c7b92SBreno Leitaooptions 	MD_ROOT_MEM
11797b2c7b92SBreno Leitao
1180495967e4SEivind Eklund# Disk quotas are supported when this option is enabled.
11812365e64fSRodney W. Grimesoptions 	QUOTA			#enable disk quotas
11826a8d6623SGarrett Wollman
1183276756a4SDag-Erling Smørgrav# If you are running a machine just as a fileserver for PC and MAC
118445c203fcSGleb Smirnoff# users, using SAMBA, you may consider setting this option
1185276756a4SDag-Erling Smørgrav# and keeping all those users' directories on a filesystem that is
1186276756a4SDag-Erling Smørgrav# mounted with the suiddir option. This gives new files the same
1187ec4e5afbSRobert Nordier# ownership as the directory (similar to group). It's a security hole
11886110161fSDag-Erling Smørgrav# if you let these users run programs, so confine it to file-servers
1189276756a4SDag-Erling Smørgrav# (but it'll save you lots of headaches in those cases). Root owned
1190276756a4SDag-Erling Smørgrav# directories are exempt and X bits are cleared. The suid bit must be
11919c0ef6d5SOliver Fromme# set on the directory as well; see chmod(1). PC owners can't see/set
1192276756a4SDag-Erling Smørgrav# ownerships so they keep getting their toes trodden on. This saves
1193276756a4SDag-Erling Smørgrav# you all the support calls as the filesystem it's used on will act as
1194276756a4SDag-Erling Smørgrav# they expect: "It's my dir so it must be my file".
1195cb800e34SJulian Elischer#
1196cb800e34SJulian Elischeroptions 	SUIDDIR
1197cb800e34SJulian Elischer
1198df394affSJohn-Mark Gurney# NFS options:
11995895e3c8SPeter Wemmoptions 	NFS_MINATTRTIMO=3	# VREG attrib cache timeout in sec
12005895e3c8SPeter Wemmoptions 	NFS_MAXATTRTIMO=60
12015895e3c8SPeter Wemmoptions 	NFS_MINDIRATTRTIMO=30	# VDIR attrib cache timeout in sec
12025895e3c8SPeter Wemmoptions 	NFS_MAXDIRATTRTIMO=60
1203df394affSJohn-Mark Gurneyoptions 	NFS_DEBUG		# Enable NFS Debugging
1204df394affSJohn-Mark Gurney
1205053a2b61SEivind Eklund#
1206053a2b61SEivind Eklund# Add support for the EXT2FS filesystem of Linux fame.  Be a bit
1207053a2b61SEivind Eklund# careful with this - the ext2fs code has a tendency to lag behind
1208053a2b61SEivind Eklund# changes and not be exercised very much, so mounting read/write could
1209053a2b61SEivind Eklund# be dangerous (and even mounting read only could result in panics.)
1210053a2b61SEivind Eklund#
12115895e3c8SPeter Wemmoptions 	EXT2FS
1212053a2b61SEivind Eklund
12138ab2f5ecSMark Murray# The system memory devices; /dev/mem, /dev/kmem
1214e83e229dSWarner Loshdevice		mem
12158ab2f5ecSMark Murray
121600a5db46SStacey Son# The kernel symbol table device; /dev/ksyms
121700a5db46SStacey Sondevice		ksyms
121800a5db46SStacey Son
1219c4f02a89SMax Khon# Optional character code conversion support with LIBICONV.
1220c4f02a89SMax Khon# Each option requires their base file system and LIBICONV.
1221c4f02a89SMax Khonoptions 	CD9660_ICONV
1222c4f02a89SMax Khonoptions 	MSDOSFS_ICONV
1223126f0dfaSScott Longoptions 	UDF_ICONV
1224c4f02a89SMax Khon
12256a8d6623SGarrett Wollman
12266a8d6623SGarrett Wollman#####################################################################
1227abc97a06SBruce Evans# POSIX P1003.1B
1228abc97a06SBruce Evans
12291c9c6382SRuslan Ermilov# Real time extensions added in the 1993 POSIX
1230abc97a06SBruce Evans# _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1231abc97a06SBruce Evans
12325895e3c8SPeter Wemmoptions 	_KPOSIX_PRIORITY_SCHEDULING
12338cbf4973SAlfred Perlstein# p1003_1b_semaphores are very experimental,
12348cbf4973SAlfred Perlstein# user should be ready to assist in debugging if problems arise.
12353ffb9fadSAlfred Perlsteinoptions 	P1003_1B_SEMAPHORES
1236abc97a06SBruce Evans
12375b40ce27SDavid Xu# POSIX message queue
12385b40ce27SDavid Xuoptions 	P1003_1B_MQUEUE
1239abc97a06SBruce Evans
1240abc97a06SBruce Evans#####################################################################
124112e9f256SRobert Watson# SECURITY POLICY PARAMETERS
124212e9f256SRobert Watson
1243fdcba197SRobert Watson# Support for BSM audit
1244fdcba197SRobert Watsonoptions 	AUDIT
1245fdcba197SRobert Watson
1246cd6d1d76SBruce Evans# Support for Mandatory Access Control (MAC):
1247cd6d1d76SBruce Evansoptions 	MAC
1248eae2f20cSRobert Watsonoptions 	MAC_BIBA
1249eae2f20cSRobert Watsonoptions 	MAC_BSDEXTENDED
1250287d467cSMitchell Horneoptions 	MAC_DDB
1251eae2f20cSRobert Watsonoptions 	MAC_IFOFF
1252215bab79SShivank Gargoptions 	MAC_IPACL
1253c4725737SRobert Watsonoptions 	MAC_LOMAC
1254eae2f20cSRobert Watsonoptions 	MAC_MLS
1255eae2f20cSRobert Watsonoptions 	MAC_NONE
12563496c981SIan Leporeoptions 	MAC_NTPD
1257eae2f20cSRobert Watsonoptions 	MAC_PARTITION
125803d03162SRobert Watsonoptions 	MAC_PORTACL
1259bf2fa8d9SFlorian Walpenoptions 	MAC_PRIORITY
1260eae2f20cSRobert Watsonoptions 	MAC_SEEOTHERUIDS
1261782f7255SRobert Watsonoptions 	MAC_STUB
1262eae2f20cSRobert Watsonoptions 	MAC_TEST
1263d3791ac4SDag-Erling Smørgravoptions 	MAC_VERIEXEC
1264d3791ac4SDag-Erling Smørgravoptions 	MAC_VERIEXEC_SHA1
1265d3791ac4SDag-Erling Smørgravoptions 	MAC_VERIEXEC_SHA256
1266d3791ac4SDag-Erling Smørgravoptions 	MAC_VERIEXEC_SHA384
1267d3791ac4SDag-Erling Smørgravoptions 	MAC_VERIEXEC_SHA512
1268d3791ac4SDag-Erling Smørgravdevice		mac_veriexec_parser
126912e9f256SRobert Watson
127096fcc75fSRobert Watson# Support for Capsicum
127155d4d6f4SJonathan Andersonoptions 	CAPABILITIES	# fine-grained rights on file descriptors
127255d4d6f4SJonathan Andersonoptions 	CAPABILITY_MODE	# sandboxes with no global namespace access
127396fcc75fSRobert Watson
127412e9f256SRobert Watson
127512e9f256SRobert Watson#####################################################################
1276000033d0SJeroen Ruigrok van der Werven# CLOCK OPTIONS
1277000033d0SJeroen Ruigrok van der Werven
12780f882bb1SWarner Losh# The granularity of operation is controlled by the kernel option HZ (default
12790febdc5eSWarner Losh# frequency of 1000 Hz or a period 1ms between calls). Virtual machine guests
12800febdc5eSWarner Losh# use a value of 100. Lower values may lower overhead at the expense of accuracy
12810febdc5eSWarner Losh# of scheduling, though the adaptive tick code reduces that overhead.
1282000033d0SJeroen Ruigrok van der Werven
1283000033d0SJeroen Ruigrok van der Wervenoptions 	HZ=100
1284000033d0SJeroen Ruigrok van der Werven
12854cc167a3SKonstantin Belousov# Enable support for the kernel PLL to use an external PPS signal,
12864cc167a3SKonstantin Belousov# under supervision of [x]ntpd(8)
12874cc167a3SKonstantin Belousov# More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
12884cc167a3SKonstantin Belousov
12894cc167a3SKonstantin Belousovoptions 	PPS_SYNC
12904cc167a3SKonstantin Belousov
1291b0fdc837SLawrence Stewart# Enable support for generic feed-forward clocks in the kernel.
1292b0fdc837SLawrence Stewart# The feed-forward clock support is an alternative to the feedback oriented
1293b0fdc837SLawrence Stewart# ntpd/system clock approach, and is to be used with a feed-forward
1294b0fdc837SLawrence Stewart# synchronization algorithm such as the RADclock:
1295b0fdc837SLawrence Stewart# More info here: http://www.synclab.org/radclock
1296b0fdc837SLawrence Stewart
1297b0fdc837SLawrence Stewartoptions 	FFCLOCK
1298b0fdc837SLawrence Stewart
1299000033d0SJeroen Ruigrok van der Werven
1300000033d0SJeroen Ruigrok van der Werven#####################################################################
1301de6a307eSPeter Dufault# SCSI DEVICES
1302de6a307eSPeter Dufault
13036a8d6623SGarrett Wollman# SCSI DEVICE CONFIGURATION
13046a8d6623SGarrett Wollman
13056a8d6623SGarrett Wollman# The SCSI subsystem consists of the `base' SCSI code, a number of
1306ebc1a0e2SPeter Dufault# high-level SCSI device `type' drivers, and the low-level host-adapter
13076a8d6623SGarrett Wollman# device drivers.  The host adapters are listed in the ISA and PCI
13086a8d6623SGarrett Wollman# device configuration sections below.
13096a8d6623SGarrett Wollman#
1310e14eb5a1SGarrett Wollman# It is possible to wire down your SCSI devices so that a given bus,
1311e14eb5a1SGarrett Wollman# target, and LUN always come on line as the same device unit.  In
1312e14eb5a1SGarrett Wollman# earlier versions the unit numbers were assigned in the order that
1313e14eb5a1SGarrett Wollman# the devices were probed on the SCSI bus.  This means that if you
1314e14eb5a1SGarrett Wollman# removed a disk drive, you may have had to rewrite your /etc/fstab
1315e14eb5a1SGarrett Wollman# file, and also that you had to be careful when adding a new disk
1316e14eb5a1SGarrett Wollman# as it may have been probed earlier and moved your device configuration
1317ac8e5d02SConrad Meyer# around.
1318ebc1a0e2SPeter Dufault
1319ebc1a0e2SPeter Dufault# This old behavior is maintained as the default behavior.  The unit
1320ebc1a0e2SPeter Dufault# assignment begins with the first non-wired down unit for a device
1321700daf5eSJustin T. Gibbs# type.  For example, if you wire a disk as "da3" then the first
1322700daf5eSJustin T. Gibbs# non-wired disk will be assigned da4.
1323ebc1a0e2SPeter Dufault
1324ebc1a0e2SPeter Dufault# The syntax for wiring down devices is:
1325ebc1a0e2SPeter Dufault
1326f9ba2bbeSWarner Loshenvvar		hint.scbus.0.at="ahc0"
1327f9ba2bbeSWarner Loshenvvar		hint.scbus.1.at="ahc1"
1328f9ba2bbeSWarner Loshenvvar		hint.scbus.1.bus="0"
1329f9ba2bbeSWarner Loshenvvar		hint.scbus.3.at="ahc2"
1330f9ba2bbeSWarner Loshenvvar		hint.scbus.3.bus="0"
1331f9ba2bbeSWarner Loshenvvar		hint.scbus.2.at="ahc2"
1332f9ba2bbeSWarner Loshenvvar		hint.scbus.2.bus="1"
1333f9ba2bbeSWarner Loshenvvar		hint.da.0.at="scbus0"
1334f9ba2bbeSWarner Loshenvvar		hint.da.0.target="0"
1335f9ba2bbeSWarner Loshenvvar		hint.da.0.unit="0"
1336f9ba2bbeSWarner Loshenvvar		hint.da.1.at="scbus3"
1337f9ba2bbeSWarner Loshenvvar		hint.da.1.target="1"
1338f9ba2bbeSWarner Loshenvvar		hint.da.2.at="scbus2"
1339f9ba2bbeSWarner Loshenvvar		hint.da.2.target="3"
1340f9ba2bbeSWarner Loshenvvar		hint.sa.1.at="scbus1"
1341f9ba2bbeSWarner Loshenvvar		hint.sa.1.target="6"
1342ebc1a0e2SPeter Dufault
1343ebc1a0e2SPeter Dufault# "units" (SCSI logical unit number) that are not specified are
1344ebc1a0e2SPeter Dufault# treated as if specified as LUN 0.
1345ebc1a0e2SPeter Dufault
1346ebc1a0e2SPeter Dufault# All SCSI devices allocate as many units as are required.
1347ebc1a0e2SPeter Dufault
1348cf2458c9SMatt Jacob# The ch driver drives SCSI Media Changer ("jukebox") devices.
1349cf2458c9SMatt Jacob#
1350cf2458c9SMatt Jacob# The da driver drives SCSI Direct Access ("disk") and Optical Media
1351cf2458c9SMatt Jacob# ("WORM") devices.
1352cf2458c9SMatt Jacob#
1353cf2458c9SMatt Jacob# The sa driver drives SCSI Sequential Access ("tape") devices.
1354cf2458c9SMatt Jacob#
1355cf2458c9SMatt Jacob# The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1356cf2458c9SMatt Jacob#
13573c7c6c12SMike Pritchard# The ses driver drives SCSI Environment Services ("ses") and
13583c7c6c12SMike Pritchard# SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1359cf2458c9SMatt Jacob#
1360cf2458c9SMatt Jacob# The pt driver drives SCSI Processor devices.
1361cf2458c9SMatt Jacob#
13621eba4c79SScott Long# The sg driver provides a passthrough API that is compatible with the
1363e013e369SDmitry Chagin# Linux SG driver.  It will work in conjunction with the Linuxulator
1364e013e369SDmitry Chagin# to run linux SG apps.  It can also stand on its own and provide
1365d51e8487SJosh Paetzel# source level API compatibility for porting apps to FreeBSD.
1366cf2458c9SMatt Jacob#
1367cf2458c9SMatt Jacob# Target Mode support is provided here but also requires that a SIM
1368cf2458c9SMatt Jacob# (SCSI Host Adapter Driver) provide support as well.
1369cf2458c9SMatt Jacob#
1370cf2458c9SMatt Jacob# The targ driver provides target mode support as a Processor type device.
1371cf2458c9SMatt Jacob# It exists to give the minimal context necessary to respond to Inquiry
1372cf2458c9SMatt Jacob# commands. There is a sample user application that shows how the rest
1373cf2458c9SMatt Jacob# of the command support might be done in /usr/share/examples/scsi_target.
1374cf2458c9SMatt Jacob#
1375cf2458c9SMatt Jacob# The targbh driver provides target mode support and exists to respond
1376cf2458c9SMatt Jacob# to incoming commands that do not otherwise have a logical unit assigned
1377cf2458c9SMatt Jacob# to them.
1378cf2458c9SMatt Jacob#
1379b2420d4dSSergey Kandaurov# The pass driver provides a passthrough API to access the CAM subsystem.
1380ebc1a0e2SPeter Dufault
1381c9953c3bSPeter Wemmdevice		scbus		#base SCSI code
1382c9953c3bSPeter Wemmdevice		ch		#SCSI media changers
1383c9953c3bSPeter Wemmdevice		da		#SCSI direct access devices (aka disks)
1384c9953c3bSPeter Wemmdevice		sa		#SCSI tapes
1385c9953c3bSPeter Wemmdevice		cd		#SCSI CD-ROMs
1386dc0aa406SAlexander Motindevice		ses		#Enclosure Services (SES and SAF-TE)
1387cf2458c9SMatt Jacobdevice		pt		#SCSI processor
138864ed91d5SMatt Jacobdevice		targ		#SCSI Target Mode Code
138964ed91d5SMatt Jacobdevice		targbh		#SCSI Target Mode Blackhole Device
1390cf2458c9SMatt Jacobdevice		pass		#CAM passthrough driver
13911eba4c79SScott Longdevice		sg		#Linux SCSI passthrough
1392130f4520SKenneth D. Merrydevice		ctl		#CAM Target Layer
13938909a72bSPeter Dufault
1394700daf5eSJustin T. Gibbs# CAM OPTIONS:
1395700daf5eSJustin T. Gibbs# debugging options:
1396f0f25b9cSAlexander Motin# CAMDEBUG		Compile in all possible debugging.
1397f0f25b9cSAlexander Motin# CAM_DEBUG_COMPILE	Debug levels to compile in.
1398f0f25b9cSAlexander Motin# CAM_DEBUG_FLAGS	Debug levels to enable on boot.
1399f0f25b9cSAlexander Motin# CAM_DEBUG_BUS		Limit debugging to the given bus.
1400f0f25b9cSAlexander Motin# CAM_DEBUG_TARGET	Limit debugging to the given target.
1401f0f25b9cSAlexander Motin# CAM_DEBUG_LUN		Limit debugging to the given lun.
1402f0f25b9cSAlexander Motin# CAM_DEBUG_DELAY	Delay in us after printing each debug line.
1403a3851eecSAlan Somers# CAM_IO_STATS		Publish additional CAM device statics by sysctl
1404700daf5eSJustin T. Gibbs#
1405700daf5eSJustin T. Gibbs# CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1406700daf5eSJustin T. Gibbs# SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1407700daf5eSJustin T. Gibbs# SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
140856234437SKenneth D. Merry# SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
140956234437SKenneth D. Merry#             queue after a bus reset, and the number of milliseconds to
14103a937198SBrooks Davis#             freeze the device queue after a bus device reset.  This
14113a937198SBrooks Davis#             can be changed at boot and runtime with the
14123a937198SBrooks Davis#             kern.cam.scsi_delay tunable/sysctl.
1413700daf5eSJustin T. Gibbsoptions 	CAMDEBUG
1414f0f25b9cSAlexander Motinoptions 	CAM_DEBUG_COMPILE=-1
1415f0f25b9cSAlexander Motinoptions 	CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
14165895e3c8SPeter Wemmoptions 	CAM_DEBUG_BUS=-1
14175895e3c8SPeter Wemmoptions 	CAM_DEBUG_TARGET=-1
14185895e3c8SPeter Wemmoptions 	CAM_DEBUG_LUN=-1
1419f0f25b9cSAlexander Motinoptions 	CAM_DEBUG_DELAY=1
14205895e3c8SPeter Wemmoptions 	CAM_MAX_HIGHPOWER=4
1421700daf5eSJustin T. Gibbsoptions 	SCSI_NO_SENSE_STRINGS
1422700daf5eSJustin T. Gibbsoptions 	SCSI_NO_OP_STRINGS
142332672ba8SAndre Oppermannoptions 	SCSI_DELAY=5000	# Be pessimistic about Joe SCSI device
1424a25d93e5SBjoern A. Zeeboptions 	CAM_IOSCHED_DYNAMIC
1425a3851eecSAlan Somersoptions 	CAM_IO_STATS
1426d38677d2SWarner Loshoptions 	CAM_TEST_FAILURE
14271a7c583cSGarrett Wollman
1428700daf5eSJustin T. Gibbs# Options for the CAM CDROM driver:
1429700daf5eSJustin T. Gibbs# CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1430700daf5eSJustin T. Gibbs# CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1431700daf5eSJustin T. Gibbs#                           enforced if there is I/O waiting for another LUN
1432700daf5eSJustin T. Gibbs# The compiled in defaults for these variables are 2 and 10 seconds,
1433700daf5eSJustin T. Gibbs# respectively.
143493063432SJoerg Wunsch#
1435700daf5eSJustin T. Gibbs# These can also be changed on the fly with the following sysctl variables:
1436700daf5eSJustin T. Gibbs# kern.cam.cd.changer.min_busy_seconds
1437700daf5eSJustin T. Gibbs# kern.cam.cd.changer.max_busy_seconds
143893063432SJoerg Wunsch#
14395895e3c8SPeter Wemmoptions 	CHANGER_MIN_BUSY_SECONDS=2
14405895e3c8SPeter Wemmoptions 	CHANGER_MAX_BUSY_SECONDS=10
144193063432SJoerg Wunsch
14429dfb4471SKenneth D. Merry# Options for the CAM sequential access driver:
1443b29f9e40SMatt Jacob# SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
14449dfb4471SKenneth D. Merry# SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
14459dfb4471SKenneth D. Merry# SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
14469dfb4471SKenneth D. Merry# SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
14479f050ed5SMatt Jacob# SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
144825388b6cSBruce Evansoptions 	SA_IO_TIMEOUT=4
144925388b6cSBruce Evansoptions 	SA_SPACE_TIMEOUT=60
145025388b6cSBruce Evansoptions 	SA_REWIND_TIMEOUT=(2*60)
145125388b6cSBruce Evansoptions 	SA_ERASE_TIMEOUT=(4*60)
14529f050ed5SMatt Jacoboptions 	SA_1FM_AT_EOD
14539dfb4471SKenneth D. Merry
14543ece1bd2SKenneth D. Merry# Optional timeout for the CAM processor target (pt) device
14553ece1bd2SKenneth D. Merry# This is specified in seconds.  The default is 60 seconds.
145625388b6cSBruce Evansoptions 	SCSI_PT_DEFAULT_TIMEOUT=60
14573ece1bd2SKenneth D. Merry
14588904e70bSMatt Jacob# Optional enable of doing SES passthrough on other devices (e.g., disks)
14598904e70bSMatt Jacob#
14608904e70bSMatt Jacob# Normally disabled because a lot of newer SCSI disks report themselves
14618904e70bSMatt Jacob# as having SES capabilities, but this can then clot up attempts to build
14629c0ef6d5SOliver Fromme# a topology with the SES device that's on the box these drives are in....
14638904e70bSMatt Jacoboptions 	SES_ENABLE_PASSTHROUGH
14648904e70bSMatt Jacob
146576f22e35SJohn Baldwin# iSCSI
146676f22e35SJohn Baldwin#
146776f22e35SJohn Baldwin# iSCSI permits access to SCSI peripherals over a network connection
146876f22e35SJohn Baldwin# (e.g. via a TCP/IP socket)
146976f22e35SJohn Baldwin
147076f22e35SJohn Baldwindevice		cfiscsi		# CAM Target Layer iSCSI target frontend
147176f22e35SJohn Baldwindevice		iscsi		# iSCSI initiator
147276f22e35SJohn Baldwindevice		iser		# iSCSI Extensions for RDMA (iSER) initiator
147376f22e35SJohn Baldwin
147476f22e35SJohn Baldwin# Options used in dev/iscsi (Software iSCSI stack)
147576f22e35SJohn Baldwin#
147676f22e35SJohn Baldwinoptions 	ISCSI_INITIATOR_DEBUG=9
147776f22e35SJohn Baldwin
14786a8d6623SGarrett Wollman
14796a8d6623SGarrett Wollman#####################################################################
14806a8d6623SGarrett Wollman# MISCELLANEOUS DEVICES AND OPTIONS
14816a8d6623SGarrett Wollman
1482bc093719SEd Schoutendevice		pty		#BSD-style compatibility pseudo ttys
14836d823e81SJulian Elischerdevice		nmdm		#back-to-back tty devices
1484f71c01ccSPeter Wemmdevice		md		#Memory/malloc disk
1485932ef5b5SEd Schoutendevice		snp		#Snoop device - to look at pty/vty/etc..
1486efacde1bSBrooks Davisdevice		ccd		#Concatenated disk driver
14876aec1278SMax Laierdevice		firmware	#firmware(9) support
1488be174c7eSGreg Lehey
14896f2d8adbSBoris Popov# Kernel side iconv library
14906f2d8adbSBoris Popovoptions 	LIBICONV
14916f2d8adbSBoris Popov
149258067a99SPoul-Henning Kamp# Size of the kernel message buffer.  Should be N * pagesize.
14935895e3c8SPeter Wemmoptions 	MSGBUF_SIZE=40960
149458067a99SPoul-Henning Kamp
14956a8d6623SGarrett Wollman
14966a8d6623SGarrett Wollman#####################################################################
1497e131ba36SJohn Baldwin# HARDWARE BUS CONFIGURATION
1498e131ba36SJohn Baldwin
1499e131ba36SJohn Baldwin#
1500e131ba36SJohn Baldwin# PCI bus & PCI options:
1501e131ba36SJohn Baldwin#
1502e131ba36SJohn Baldwindevice		pci
150382cb5c3bSJohn Baldwinoptions 	PCI_HP			# PCI-Express native HotPlug
1504c41df401SJohn Baldwinoptions 	PCI_IOV			# PCI SR-IOV support
1505e131ba36SJohn Baldwin
1506e131ba36SJohn Baldwin
1507e131ba36SJohn Baldwin#####################################################################
1508d61e6649SAlexander Langer# HARDWARE DEVICE CONFIGURATION
1509d61e6649SAlexander Langer
1510d61e6649SAlexander Langer# For ISA the required hints are listed.
1511c0c70334SWarner Losh# PCI, CardBus, and SD/MMC are self identifying buses, so
15125bcb64f2SWarner Losh# no hints are needed.
1513d61e6649SAlexander Langer
1514d61e6649SAlexander Langer#
1515d61e6649SAlexander Langer# Mandatory devices:
1516d61e6649SAlexander Langer#
1517d61e6649SAlexander Langer
15186e818956SDavid E. O'Brien# These options are valid for other keyboard drivers as well.
15196e818956SDavid E. O'Brienoptions 	KBD_DISABLE_KEYMAP_LOAD	# refuse to load a keymap
15206e818956SDavid E. O'Brienoptions 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
15218d966fb0SMichael Paepcke
15228d966fb0SMichael Paepcke# Define keyboard latency (try 200/15 for a snappy interactive console)
1523a4b92fefSWarner Loshoptions 	KBD_DELAY1=200		# define initial key delay
1524a4b92fefSWarner Loshoptions 	KBD_DELAY2=15		# define key delay
15256e818956SDavid E. O'Brien
152646360281SEd Mastedevice		kbdmux			# keyboard multiplexer
152746360281SEd Masteoptions 	KBDMUX_DFLT_KEYMAP	# specify the built-in keymap
152846360281SEd Mastemakeoptions	KBDMUX_DFLT_KEYMAP=it.iso
152946360281SEd Maste
15307f5092f3SJohn Baldwinoptions 	FB_DEBUG		# Frame buffer debugging
15317f5092f3SJohn Baldwin
153283409a55SEd Schouten# Enable experimental features of the syscons terminal emulator (teken).
1533e42fc368SEd Schoutenoptions 	TEKEN_CONS25		# cons25-style terminal emulation
153483409a55SEd Schoutenoptions 	TEKEN_UTF8		# UTF-8 output handling
153583409a55SEd Schouten
1536ccbb7b5eSEd Maste# The vt video console driver.
1537ccbb7b5eSEd Mastedevice		vt
1538ccbb7b5eSEd Masteoptions 	VT_ALT_TO_ESC_HACK=1	# Prepend ESC sequence to ALT keys
1539ccbb7b5eSEd Masteoptions 	VT_MAXWINDOWS=16	# Number of virtual consoles
1540ccbb7b5eSEd Masteoptions 	VT_TWOBUTTON_MOUSE	# Use right mouse button to paste
1541ccbb7b5eSEd Maste
1542e9ee2675SMark Johnston# The following options set the maximum framebuffer size.
1543e9ee2675SMark Johnstonoptions 	VT_FB_MAX_HEIGHT=480
1544e9ee2675SMark Johnstonoptions 	VT_FB_MAX_WIDTH=640
1545ccbb7b5eSEd Maste
1546ccbb7b5eSEd Maste# The following options will let you change the default vt terminal colors.
1547ccbb7b5eSEd Masteoptions 	TERMINAL_NORM_ATTR=(FG_GREEN|BG_BLACK)
1548ccbb7b5eSEd Masteoptions 	TERMINAL_KERN_ATTR=(FG_LIGHTRED|BG_BLACK)
1549ccbb7b5eSEd Maste
15501fe04850SBruce Evans#
1551d61e6649SAlexander Langer# Optional devices:
15526a8d6623SGarrett Wollman#
15536a8d6623SGarrett Wollman
15546a8d6623SGarrett Wollman#
1555d61e6649SAlexander Langer# SCSI host adapters:
15566a8d6623SGarrett Wollman#
1557d8c51c6fSLeandro Lupori# aacraid: Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming
1558d8c51c6fSLeandro Lupori#          families. Container interface, CAM required.
1559d61e6649SAlexander Langer# ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1560d61e6649SAlexander Langer#      19160x/29160x, aic7770/aic78xx
1561cdd49e97SJustin T. Gibbs# ahd: Adaptec 29320/39320 Controllers.
1562d61e6649SAlexander Langer# isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1563d61e6649SAlexander Langer#      ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1564d61e6649SAlexander Langer#      ISP 12160 Ultra3 SCSI,
1565e8a0f829SMatt Jacob#      Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1566e8a0f829SMatt Jacob#      Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1567af606348SMatt Jacob#      Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
1568ac918c84SMatt Jacob# ispfw: Firmware module for Qlogic host adapters
1569f7ab0158SWarner Losh# mpr: LSI-Logic MPT/Fusion Gen 3
1570f7ab0158SWarner Losh# mps: LSI-Logic MPT/Fusion Gen 2
157164fa5108SMatt Jacob# mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
157264fa5108SMatt Jacob#      or FC9x9 Fibre Channel host adapters.
1573fb91fd69SGerard Roudier# sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1574fb91fd69SGerard Roudier#      53C810, 53C810A, 53C815, 53C825,  53C825A, 53C860, 53C875,
1575fb91fd69SGerard Roudier#      53C876, 53C885,  53C895, 53C895A, 53C896,  53C897, 53C1510D,
1576fb91fd69SGerard Roudier#      53C1010-33, 53C1010-66.
1577d61e6649SAlexander Langer
1578d8c51c6fSLeandro Luporidevice		aacraid
1579d61e6649SAlexander Langerdevice		ahc
1580cdd49e97SJustin T. Gibbsdevice		ahd
1581d61e6649SAlexander Langerdevice		isp
1582f9ba2bbeSWarner Loshenvvar		hint.isp.0.disable="1"
1583f9ba2bbeSWarner Loshenvvar		hint.isp.0.role="3"
1584f9ba2bbeSWarner Loshenvvar		hint.isp.0.prefer_iomap="1"
1585f9ba2bbeSWarner Loshenvvar		hint.isp.0.prefer_memmap="1"
1586f9ba2bbeSWarner Loshenvvar		hint.isp.0.fwload_disable="1"
1587f9ba2bbeSWarner Loshenvvar		hint.isp.0.ignore_nvram="1"
1588f9ba2bbeSWarner Loshenvvar		hint.isp.0.fullduplex="1"
1589f9ba2bbeSWarner Loshenvvar		hint.isp.0.topology="lport"
1590f9ba2bbeSWarner Loshenvvar		hint.isp.0.topology="nport"
1591f9ba2bbeSWarner Loshenvvar		hint.isp.0.topology="lport-only"
1592f9ba2bbeSWarner Loshenvvar		hint.isp.0.topology="nport-only"
15930787f2b8SMatt Jacob# we can't get u_int64_t types, nor can we get strings if it's got
15940787f2b8SMatt Jacob# a leading 0x, hence this silly dodge.
1595f9ba2bbeSWarner Loshenvvar		hint.isp.0.portwnn="w50000000aaaa0000"
1596f9ba2bbeSWarner Loshenvvar		hint.isp.0.nodewnn="w50000000aaaa0001"
1597d61e6649SAlexander Langerdevice		ispfw
1598f7ab0158SWarner Loshdevice		mpr			# LSI-Logic MPT-Fusion 3
1599f7ab0158SWarner Loshdevice		mps			# LSI-Logic MPT-Fusion 2
1600f7ab0158SWarner Loshdevice		mpt			# LSI-Logic MPT-Fusion
1601d61e6649SAlexander Langerdevice		sym
1602d61e6649SAlexander Langer
1603d61e6649SAlexander Langer# The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1604d61e6649SAlexander Langer# controllers that have it configured only if this option is set. Unfortunately,
1605d61e6649SAlexander Langer# this doesn't work on some motherboards, which prevents it from being the
1606d61e6649SAlexander Langer# default.
1607d61e6649SAlexander Langeroptions 	AHC_ALLOW_MEMIO
1608d61e6649SAlexander Langer
1609fac70739SJeroen Ruigrok van der Werven# Dump the contents of the ahc controller configuration PROM.
1610fac70739SJeroen Ruigrok van der Wervenoptions 	AHC_DUMP_EEPROM
1611fac70739SJeroen Ruigrok van der Werven
1612fac70739SJeroen Ruigrok van der Werven# Bitmap of units to enable targetmode operations.
1613fac70739SJeroen Ruigrok van der Wervenoptions 	AHC_TMODE_ENABLE
1614fac70739SJeroen Ruigrok van der Werven
1615662d3818SScott Long# Compile in Aic7xxx Debugging code.
1616662d3818SScott Longoptions 	AHC_DEBUG
1617662d3818SScott Long
1618662d3818SScott Long# Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1619662d3818SScott Longoptions 	AHC_DEBUG_OPTS
1620662d3818SScott Long
1621f8f8803bSBruce Evans# Print register bitfields in debug output.  Adds ~128k to driver
1622f8f8803bSBruce Evans# See ahc(4).
1623662d3818SScott Longoptions 	AHC_REG_PRETTY_PRINT
1624662d3818SScott Long
1625cdd49e97SJustin T. Gibbs# Compile in aic79xx debugging code.
1626cdd49e97SJustin T. Gibbsoptions 	AHD_DEBUG
1627cdd49e97SJustin T. Gibbs
1628f8f8803bSBruce Evans# Aic79xx driver debugging options.  Adds ~215k to driver.  See ahd(4).
1629cdd49e97SJustin T. Gibbsoptions 	AHD_DEBUG_OPTS=0xFFFFFFFF
1630cdd49e97SJustin T. Gibbs
163143e9d8a3SScott Long# Print human-readable register definitions when debugging
163243e9d8a3SScott Longoptions 	AHD_REG_PRETTY_PRINT
163343e9d8a3SScott Long
1634662d3818SScott Long# Bitmap of units to enable targetmode operations.
1635662d3818SScott Longoptions 	AHD_TMODE_ENABLE
1636662d3818SScott Long
1637d61e6649SAlexander Langer# Options used in dev/isp/ (Qlogic SCSI/FC driver).
1638d61e6649SAlexander Langer#
1639d61e6649SAlexander Langer#	ISP_TARGET_MODE		-	enable target mode operation
1640d61e6649SAlexander Langer#
164164fa5108SMatt Jacoboptions 	ISP_TARGET_MODE=1
1642af606348SMatt Jacob#
16439a1b0d43SMatt Jacob#	ISP_DEFAULT_ROLES	-	default role
16449a1b0d43SMatt Jacob#		none=0
16459a1b0d43SMatt Jacob#		target=1
16469a1b0d43SMatt Jacob#		initiator=2
16479a1b0d43SMatt Jacob#		both=3			(not supported currently)
1648af606348SMatt Jacob#
164915f0f952SMatt Jacob#	ISP_INTERNAL_TARGET		(trivial internal disk target, for testing)
165015f0f952SMatt Jacob#
1651e2873b76SMatt Jacoboptions 	ISP_DEFAULT_ROLES=0
1652d61e6649SAlexander Langer
1653d61e6649SAlexander Langer#options 	SYM_SETUP_SCSI_DIFF	#-HVD support for 825a, 875, 885
1654d61e6649SAlexander Langer					# disabled:0 (default), enabled:1
1655d61e6649SAlexander Langer#options 	SYM_SETUP_PCI_PARITY	#-PCI parity checking
1656d61e6649SAlexander Langer					# disabled:0, enabled:1 (default)
1657d61e6649SAlexander Langer#options 	SYM_SETUP_MAX_LUN	#-Number of LUNs supported
1658d61e6649SAlexander Langer					# default:8, range:[1..64]
16596a8d6623SGarrett Wollman
16606e818956SDavid E. O'Brien#
16616e818956SDavid E. O'Brien# Compaq "CISS" RAID controllers (SmartRAID 5* series)
16626e818956SDavid E. O'Brien# These controllers have a SCSI-like interface, and require the
16636e818956SDavid E. O'Brien# CAM infrastructure.
16646e818956SDavid E. O'Brien#
16656e818956SDavid E. O'Briendevice		ciss
16666e818956SDavid E. O'Brien
16676e818956SDavid E. O'Brien#
16686e818956SDavid E. O'Brien# Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers.  Only
16696e818956SDavid E. O'Brien# one entry is needed; the code will find and configure all supported
16706e818956SDavid E. O'Brien# controllers.
16716e818956SDavid E. O'Brien#
16726e818956SDavid E. O'Briendevice		ida		# Compaq Smart RAID
16736e818956SDavid E. O'Briendevice		mlx		# Mylex DAC960
16747f631a41SScott Longdevice		mfi		# LSI MegaRAID SAS
1675f366931cSScott Longdevice		mfip		# LSI MegaRAID SAS passthrough, requires CAM
16766b31d3f7SScott Longoptions 	MFI_DEBUG
1677a58b4afaSMark Johnstondevice		mrsas		# LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
16786e818956SDavid E. O'Brien
16798f7105a2SJohn Baldwin# NVM Express
16808f7105a2SJohn Baldwin#
16818f7105a2SJohn Baldwin# nvme:	PCI-express NVM Express host controllers
16828f7105a2SJohn Baldwin# nda:	CAM NVMe disk driver
16838f7105a2SJohn Baldwin# nvd:	non-CAM NVMe disk driver
16848f7105a2SJohn Baldwin
16858f7105a2SJohn Baldwindevice		nvme		# base NVMe driver
16868f7105a2SJohn Baldwinoptions 	NVME_USE_NVD=1	# Use nvd(4) instead of the CAM nda(4) driver
16878f7105a2SJohn Baldwindevice		nda		# NVMe direct access devices (aka disks)
16888f7105a2SJohn Baldwindevice		nvd		# expose NVMe namespaces as disks, depends on nvme
16898f7105a2SJohn Baldwin
16906e818956SDavid E. O'Brien#
1691e19ef875SAlexander Motin# Serial ATA host controllers:
1692e19ef875SAlexander Motin#
1693e19ef875SAlexander Motin# ahci: Advanced Host Controller Interface (AHCI) compatible
1694dd48af36SAlexander Motin# mvs:  Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
1695e19ef875SAlexander Motin# siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
16961a00526bSAlexander Motin#
16971a00526bSAlexander Motin# These drivers are part of cam(4) subsystem. They supersede less featured
16981a00526bSAlexander Motin# ata(4) subsystem drivers, supporting same hardware.
1699e19ef875SAlexander Motin
1700a508f5d9SJohn Baldwindevice		ahci		# AHCI-compatible SATA controllers
1701a508f5d9SJohn Baldwindevice		mvs		# Marvell 88SX50XX/88SX60XX/88SX70XX/SoC SATA
1702a508f5d9SJohn Baldwindevice		siis		# SiliconImage SiI3124/SiI3132/SiI3531 SATA
1703a508f5d9SJohn Baldwindevice		ada		# ATA/SATA direct access devices (aka disks)
1704e19ef875SAlexander Motin
1705e19ef875SAlexander Motin#
170645f6d665SAlexander Motin# The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
170745f6d665SAlexander Motin# PC Card devices. You only need one "device ata" for it to find all
17086d04301dSAlexander Langer# PCI and PC Card ATA/ATAPI devices on modern machines.
1709c4bda3c6SAlexander Motin# Alternatively, individual bus and chipset drivers may be chosen by using
1710c4bda3c6SAlexander Motin# the 'atacore' driver then selecting the drivers on a per vendor basis.
1711c4bda3c6SAlexander Motin# For example to build a system which only supports a VIA chipset,
1712c4bda3c6SAlexander Motin# omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
1713a508f5d9SJohn Baldwindevice		ata		# Legacy ATA/SATA controllers
1714c4bda3c6SAlexander Motin
1715c4bda3c6SAlexander Motin# Modular ATA
1716c4bda3c6SAlexander Motin#device		atacore		# Core ATA functionality
1717c4bda3c6SAlexander Motin#device		ataisa		# ISA bus support
1718c4bda3c6SAlexander Motin#device		atapci		# PCI bus support; only generic chipset support
1719c4bda3c6SAlexander Motin
1720c4bda3c6SAlexander Motin# PCI ATA chipsets
1721c4bda3c6SAlexander Motin#device		ataacard	# ACARD
1722c4bda3c6SAlexander Motin#device		ataacerlabs	# Acer Labs Inc. (ALI)
1723c4bda3c6SAlexander Motin#device		ataamd		# American Micro Devices (AMD)
1724c4bda3c6SAlexander Motin#device		ataati		# ATI
1725c4bda3c6SAlexander Motin#device		atacenatek	# Cenatek
1726c4bda3c6SAlexander Motin#device		atacypress	# Cypress
1727c4bda3c6SAlexander Motin#device		atacyrix	# Cyrix
1728c4bda3c6SAlexander Motin#device		atahighpoint	# HighPoint
1729c4bda3c6SAlexander Motin#device		ataintel	# Intel
1730c4bda3c6SAlexander Motin#device		ataite		# Integrated Technology Inc. (ITE)
1731c4bda3c6SAlexander Motin#device		atajmicron	# JMicron
1732c4bda3c6SAlexander Motin#device		atamarvell	# Marvell
1733c4bda3c6SAlexander Motin#device		atamicron	# Micron
1734c4bda3c6SAlexander Motin#device		atanational	# National
1735c4bda3c6SAlexander Motin#device		atanetcell	# NetCell
1736c4bda3c6SAlexander Motin#device		atanvidia	# nVidia
1737c4bda3c6SAlexander Motin#device		atapromise	# Promise
1738c4bda3c6SAlexander Motin#device		ataserverworks	# ServerWorks
1739c4bda3c6SAlexander Motin#device		atasiliconimage	# Silicon Image Inc. (SiI) (formerly CMD)
1740c4bda3c6SAlexander Motin#device		atasis		# Silicon Integrated Systems Corp.(SiS)
1741c4bda3c6SAlexander Motin#device		atavia		# VIA Technologies Inc.
1742c4bda3c6SAlexander Motin
17438b89ef0aSSøren Schmidt#
17446d04301dSAlexander Langer# For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1745f9ba2bbeSWarner Loshenvvar		hint.ata.0.at="isa"
1746f9ba2bbeSWarner Loshenvvar		hint.ata.0.port="0x1f0"
1747f9ba2bbeSWarner Loshenvvar		hint.ata.0.irq="14"
1748f9ba2bbeSWarner Loshenvvar		hint.ata.1.at="isa"
1749f9ba2bbeSWarner Loshenvvar		hint.ata.1.port="0x170"
1750f9ba2bbeSWarner Loshenvvar		hint.ata.1.irq="15"
17516d04301dSAlexander Langer
17526d04301dSAlexander Langer#
1753339ef827SMitchell Horne# uart: generic driver for serial interfaces.
1754c8956b36SMarcel Moolenaar#
1755501ef98fSMarcel Moolenaardevice		uart
1756501ef98fSMarcel Moolenaar
17578194412bSMarcel Moolenaar# Options for uart(4)
17588194412bSMarcel Moolenaaroptions 	UART_PPS_ON_CTS		# Do time pulse capturing using CTS
17598194412bSMarcel Moolenaar					# instead of DCD.
17601662b008SIan Leporeoptions 	UART_POLL_FREQ		# Set polling rate, used when hw has
17611662b008SIan Lepore					# no interrupt support (50 Hz default).
17628194412bSMarcel Moolenaar
1763501ef98fSMarcel Moolenaar# The following hint should only be used for pure ISA devices.  It is not
1764501ef98fSMarcel Moolenaar# needed otherwise.  Use of hints is strongly discouraged.
1765f9ba2bbeSWarner Loshenvvar		hint.uart.0.at="isa"
1766501ef98fSMarcel Moolenaar
1767c8956b36SMarcel Moolenaar# The following 3 hints are used when the UART is a system device (i.e., a
1768c8956b36SMarcel Moolenaar# console or debug port), but only on platforms that don't have any other
1769c8956b36SMarcel Moolenaar# means to pass the information to the kernel.  The unit number of the hint
1770c8956b36SMarcel Moolenaar# is only used to bundle the hints together.  There is no relation to the
1771c8956b36SMarcel Moolenaar# unit number of the probed UART.
1772f9ba2bbeSWarner Loshenvvar		hint.uart.0.port="0x3f8"
1773f9ba2bbeSWarner Loshenvvar		hint.uart.0.flags="0x10"
1774f9ba2bbeSWarner Loshenvvar		hint.uart.0.baud="115200"
1775501ef98fSMarcel Moolenaar
1776339ef827SMitchell Horne# `flags' for serial drivers that support consoles, like uart(4):
1777c8956b36SMarcel Moolenaar#	0x10	enable console support for this unit.  Other console flags
1778c8956b36SMarcel Moolenaar#		(if applicable) are ignored unless this is set.  Enabling
1779c8956b36SMarcel Moolenaar#		console support does not make the unit the preferred console.
1780339ef827SMitchell Horne#		Boot with -h or set boot_serial=YES in the loader.
1781c8956b36SMarcel Moolenaar#		Currently, at most one unit can have console support; the
1782c8956b36SMarcel Moolenaar#		first one (in config file order) with this flag set is
1783339ef827SMitchell Horne#		preferred.
1784c8956b36SMarcel Moolenaar#	0x80	use this port for serial line gdb support in ddb.  Also known
1785c8956b36SMarcel Moolenaar#		as debug port.
17869546766aSBruce Evans#
17879546766aSBruce Evans
1788501ef98fSMarcel Moolenaar# Options for serial drivers that support consoles:
178991ed2fecSJohn-Mark Gurneyoptions 	BREAK_TO_DEBUGGER	# A BREAK/DBG on the console goes to
1790c8956b36SMarcel Moolenaar					# ddb, if available.
17916a8d6623SGarrett Wollman
179226b6ea69SPaul Saab# Solaris implements a new BREAK which is initiated by a character
179326b6ea69SPaul Saab# sequence CR ~ ^b which is similar to a familiar pattern used on
17949c0ef6d5SOliver Fromme# Sun servers by the Remote Console.  There are FreeBSD extensions:
1795c7b3d8e2SMaxim Konovalov# CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
179626b6ea69SPaul Saaboptions 	ALT_BREAK_TO_DEBUGGER
179726b6ea69SPaul Saab
1798af2e25a6SMarcel Moolenaar# Serial Communications Controller
1799b63eeef4SMarius Strobl# Supports the Freescale/NXP QUad Integrated and Zilog Z8530 multi-channel
1800b63eeef4SMarius Strobl# communications controllers.
1801af2e25a6SMarcel Moolenaardevice		scc
1802af2e25a6SMarcel Moolenaar
18039c564b6cSJohn Hay# PCI Universal Communications driver
180464220a7eSMarcel Moolenaar# Supports various multi port PCI I/O cards.
18059c564b6cSJohn Haydevice		puc
18069c564b6cSJohn Hay
18076a8d6623SGarrett Wollman#
1808d61e6649SAlexander Langer# Network interfaces:
18096a8d6623SGarrett Wollman#
1810dfd77572SJohn Baldwin# MII bus support is required for many PCI Ethernet NICs,
1811d61e6649SAlexander Langer# namely those which use MII-compliant transceivers or implement
18123c7c6c12SMike Pritchard# transceiver control interfaces that operate like an MII.  Adding
18138c1093fcSMarius Strobl# "device miibus" to the kernel config pulls in support for the generic
1814efd0fdfeSGordon Bergling# miibus API, the common support for bit-bang'ing the MII and all
18158c1093fcSMarius Strobl# of the PHY drivers, including a generic one for PHYs that aren't
18168c1093fcSMarius Strobl# specifically handled by an individual driver.  Support for specific
18178c1093fcSMarius Strobl# PHYs may be built by adding "device mii", "device mii_bitbang" if
18188c1093fcSMarius Strobl# needed by the NIC driver and then adding the appropriate PHY driver.
1819dfd77572SJohn Baldwindevice  	mii		# Minimal MII support
18208c1093fcSMarius Strobldevice  	mii_bitbang	# Common module for bit-bang'ing the MII
18218c1093fcSMarius Strobldevice  	miibus		# MII support w/ bit-bang'ing and all PHYs
1822dfd77572SJohn Baldwin
1823dfd77572SJohn Baldwindevice  	acphy		# Altima Communications AC101
1824dfd77572SJohn Baldwindevice  	amphy		# AMD AM79c873 / Davicom DM910{1,2}
1825dfd77572SJohn Baldwindevice  	atphy		# Attansic/Atheros F1
1826dfd77572SJohn Baldwindevice  	axphy		# Asix Semiconductor AX88x9x
1827dfd77572SJohn Baldwindevice  	bmtphy		# Broadcom BCM5201/BCM5202 and 3Com 3c905C
1828d933e97fSStephen Hurddevice		bnxt		# Broadcom NetXtreme-C/NetXtreme-E
1829dfd77572SJohn Baldwindevice  	brgphy		# Broadcom BCM54xx/57xx 1000baseTX
183078c1387fSIan Leporedevice  	cgem		# Cadence GEM Gigabit Ethernet
1831dfd77572SJohn Baldwindevice  	ciphy		# Cicada/Vitesse CS/VSC8xxx
1832dfd77572SJohn Baldwindevice  	e1000phy	# Marvell 88E1000 1000/100/10-BT
1833dfd77572SJohn Baldwindevice  	gentbi		# Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
1834dfd77572SJohn Baldwindevice  	icsphy		# ICS ICS1889-1893
1835dfd77572SJohn Baldwindevice  	ip1000phy	# IC Plus IP1000A/IP1001
1836dfd77572SJohn Baldwindevice  	jmphy		# JMicron JMP211/JMP202
1837dfd77572SJohn Baldwindevice  	lxtphy		# Level One LXT-970
1838dfd77572SJohn Baldwindevice  	nsgphy		# NatSemi DP8361/DP83865/DP83891
1839dfd77572SJohn Baldwindevice  	nsphy		# NatSemi DP83840A
1840dfd77572SJohn Baldwindevice  	nsphyter	# NatSemi DP83843/DP83815
1841dfd77572SJohn Baldwindevice  	pnaphy		# HomePNA
1842dfd77572SJohn Baldwindevice  	qsphy		# Quality Semiconductor QS6612
1843e6713fe5SPyun YongHyeondevice  	rdcphy		# RDC Semiconductor R6040
1844dfd77572SJohn Baldwindevice  	rgephy		# RealTek 8169S/8110S/8211B/8211C
1845dfd77572SJohn Baldwindevice  	rlphy		# RealTek 8139
1846dfd77572SJohn Baldwindevice  	rlswitch	# RealTek 8305
1847dfd77572SJohn Baldwindevice  	smcphy		# SMSC LAN91C111
1848dfd77572SJohn Baldwindevice  	tdkphy		# TDK 89Q2120
1849dfd77572SJohn Baldwindevice  	truephy		# LSI TruePHY
1850dfd77572SJohn Baldwindevice		xmphy		# XaQti XMAC II
1851d61e6649SAlexander Langer
1852ba26d470SStanislav Sedov# ae:   Support for gigabit ethernet adapters based on the Attansic/Atheros
1853ba26d470SStanislav Sedov#       L2 PCI-Express FastEthernet controllers.
1854cfef026aSPyun YongHyeon# age:  Support for gigabit ethernet adapters based on the Attansic/Atheros
1855cfef026aSPyun YongHyeon#       L1 PCI express gigabit ethernet controllers.
1856d68875ebSPyun YongHyeon# alc:  Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
18573c6e15bcSPyun YongHyeon# ale:  Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
1858390cee87SJohn Baldwin# ath:  Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
1859343ed0a8SJohn Baldwin# bce:	Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
1860343ed0a8SJohn Baldwin#       adapters.
1861343ed0a8SJohn Baldwin# bfe:	Broadcom BCM4401 Ethernet adapter.
186295d67482SBill Paul# bge:	Support for gigabit ethernet adapters based on the Broadcom
1863586d7c2eSJohn Polstra#	BCM570x family of controllers, including the 3Com 3c996-T,
1864586d7c2eSJohn Polstra#	the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1865586d7c2eSJohn Polstra#	the embedded gigE NICs on Dell PowerEdge 2550 servers.
1866d933e97fSStephen Hurd# bnxt:	Broadcom NetXtreme-C and NetXtreme-E PCIe 10/25/50G Ethernet adapters.
18674e400768SDavid Christensen# bxe:	Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
1868dd46ab31SDavid Christensen#       adapters.
18693132ad0dSWarner Losh# bwi:	Broadcom BCM430* and BCM431* family of wireless adapters.
1870eb5ef23cSWeongyo Jeong# bwn:	Broadcom BCM43xx family of wireless adapters.
1871119051cbSMarius Strobl# cas:	Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
1872ca7fe84aSNavdeep Parhar# cxgb: Chelsio T3 based 1GbE/10GbE PCIe Ethernet adapters.
1873a74031a5SJohn Baldwin# cxgbe:Chelsio T4, T5, and T6-based 1/10/25/40/100GbE PCIe Ethernet
187424957938SJohn Baldwin#	adapters.
187524957938SJohn Baldwin# cxgbev: Chelsio T4, T5, and T6-based PCIe Virtual Functions.
1876d61e6649SAlexander Langer# dc:   Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1877d61e6649SAlexander Langer#       and various workalikes including:
1878d61e6649SAlexander Langer#       the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1879d61e6649SAlexander Langer#       AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1880d61e6649SAlexander Langer#       82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1881d61e6649SAlexander Langer#       and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1882d61e6649SAlexander Langer#       replaces the old al, ax, dm, pn and mx drivers.  List of brands:
1883d61e6649SAlexander Langer#       Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1884d61e6649SAlexander Langer#       SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1885d61e6649SAlexander Langer#       LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1886d61e6649SAlexander Langer#       KNE110TX.
1887a59716d2SPrafulla Deuskar# em:   Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1888d61e6649SAlexander Langer# fxp:  Intel EtherExpress Pro/100B
1889cf87044eSMatt Jacob#	(hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
18901ed3fed7SMarius Strobl# gem:  Apple GMAC/Sun ERI/Sun GEM
189175a1bf5fSPyun YongHyeon# jme:  JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
189244ac0964SMarius Strobl# le:   AMD Am7900 LANCE and Am79C9xx PCnet
1893c678bc4fSBill Paul# lge:	Support for PCI gigabit ethernet adapters based on the Level 1
1894c678bc4fSBill Paul#	LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1895c678bc4fSBill Paul#	SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1896f173c2b7SSean Bruno# lio:  Support for Cavium 23XX Ethernet adapters
1897d1f25d5dSBernhard Schmidt# malo: Marvell Libertas wireless NICs.
1898d1f25d5dSBernhard Schmidt# mwl:  Marvell 88W8363 802.11n wireless NICs.
1899778eefa4SJohn Baldwin#	Requires the mwl firmware module
1900778eefa4SJohn Baldwin# mwlfw: Marvell 88W8363 firmware
1901c9d21ce9SPyun YongHyeon# msk:	Support for gigabit ethernet adapters based on the Marvell/SysKonnect
1902c9d21ce9SPyun YongHyeon#	Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
1903c9d21ce9SPyun YongHyeon#	88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
1904c9d21ce9SPyun YongHyeon#	88E8055, 88E8056 and D-Link 560T/550SX.
1905c9c8bf05SHans Petter Selasky# mlxfw: Mellanox firmware update module.
190622f2c49aSHans Petter Selasky# mlx5:	Mellanox ConnectX-4 and ConnectX-4 LX IB and Eth shared code module.
190722f2c49aSHans Petter Selasky# mlx5en:Mellanox ConnectX-4 and ConnectX-4 LX PCIe Ethernet adapters.
1908d3d67116SMaxim Sobolev# my:	Myson Fast Ethernet (MTD80X, MTD89X)
1909ce4946daSBill Paul# nge:	Support for PCI gigabit ethernet adapters based on the National
1910ce4946daSBill Paul#	Semiconductor DP83820 and DP83821 chipset. This includes the
1911ce4946daSBill Paul#	SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
1912cc2824b8SBjoern A. Zeeb#	GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
1913cc2824b8SBjoern A. Zeeb#	EP-320G-TX and the Netgear GA622T.
19142f345d8eSLuigi Rizzo# oce:	Emulex 10 Gbit adapters (OneConnect Ethernet)
1915390cee87SJohn Baldwin# ral:	Ralink Technology IEEE 802.11 wireless adapter
19160587cad8SPyun YongHyeon# re:   RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
1917d61e6649SAlexander Langer# rl:   Support for PCI fast ethernet adapters based on the RealTek 8129/8139
1918d61e6649SAlexander Langer#       chipset.  Note that the RealTek driver defaults to using programmed
1919d61e6649SAlexander Langer#       I/O to do register accesses because memory mapped mode seems to cause
1920d61e6649SAlexander Langer#       severe lockups on SMP hardware.  This driver also supports the
1921d61e6649SAlexander Langer#       Accton EN1207D `Cheetah' adapter, which uses a chip called
1922d61e6649SAlexander Langer#       the MPX 5030/5038, which is either a RealTek in disguise or a
1923d61e6649SAlexander Langer#       RealTek workalike.  Note that the D-Link DFE-530TX+ uses the RealTek
1924d61e6649SAlexander Langer#       chipset and is supported by this driver, not the 'vr' driver.
1925b38b13d8SKevin Lo# rtwn: RealTek wireless adapters.
1926b38b13d8SKevin Lo# rtwnfw: RealTek wireless firmware.
1927d193ed0bSPyun YongHyeon# sge:  Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
1928b2ca5572SAlexander Langer# sis:  Support for NICs based on the Silicon Integrated Systems SiS 900,
1929b2ca5572SAlexander Langer#       SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
1930d61e6649SAlexander Langer# sk:   Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
1931d61e6649SAlexander Langer#       This includes the SK-9841 and SK-9842 single port cards (single mode
1932d61e6649SAlexander Langer#       and multimode fiber) and the SK-9843 and SK-9844 dual port cards
1933d61e6649SAlexander Langer#       (also single mode and multimode).
1934d61e6649SAlexander Langer#       The driver will autodetect the number of ports on the card and
1935d61e6649SAlexander Langer#       attach each one as a separate network interface.
1936d61e6649SAlexander Langer# ste:  Sundance Technologies ST201 PCI fast ethernet controller, includes
1937d61e6649SAlexander Langer#       the D-Link DFE-550TX.
1938d497bdf1SPyun YongHyeon# stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
1939d497bdf1SPyun YongHyeon#       TC9021 family of controllers, including the Sundance ST2021/ST2023,
1940d497bdf1SPyun YongHyeon#       the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
1941d61e6649SAlexander Langer# ti:   Support for PCI gigabit ethernet NICs based on the Alteon Networks
1942d61e6649SAlexander Langer#       Tigon 1 and Tigon 2 chipsets.  This includes the Alteon AceNIC, the
1943c86eb67fSDmitry Morozovsky#       3Com 3c985, the Netgear GA620 and various others.  Note that you will
1944c86eb67fSDmitry Morozovsky#       probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
1945d61e6649SAlexander Langer# vr:   Support for various fast ethernet adapters based on the VIA
1946d61e6649SAlexander Langer#       Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
1947e83bcc01SGavin Atkinson#       including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
1948e83bcc01SGavin Atkinson#       DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
19492608aefcSPyun YongHyeon# vte:  DM&P Vortex86 RDC R6040 Fast Ethernet
1950d61e6649SAlexander Langer# xl:   Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
1951d61e6649SAlexander Langer#       Etherlink XL cards and integrated controllers.  This includes the
1952d61e6649SAlexander Langer#       integrated 3c905B-TX chips in certain Dell Optiplex and Dell
1953d61e6649SAlexander Langer#       Precision desktop machines and the integrated 3c905-TX chips
1954d61e6649SAlexander Langer#       in Dell Latitude laptop docking stations.
1955d61e6649SAlexander Langer#       Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
1956d61e6649SAlexander Langer
1957d61e6649SAlexander Langer# PCI Ethernet NICs that use the common MII bus controller code.
1958ba26d470SStanislav Sedovdevice		ae		# Attansic/Atheros L2 FastEthernet
1959cfef026aSPyun YongHyeondevice		age		# Attansic/Atheros L1 Gigabit Ethernet
1960d68875ebSPyun YongHyeondevice		alc		# Atheros AR8131/AR8132 Ethernet
19613c6e15bcSPyun YongHyeondevice		ale		# Atheros AR8121/AR8113/AR8114 Ethernet
1962343ed0a8SJohn Baldwindevice		bce		# Broadcom BCM5706/BCM5708 Gigabit Ethernet
1963343ed0a8SJohn Baldwindevice		bfe		# Broadcom BCM440x 10/100 Ethernet
1964343ed0a8SJohn Baldwindevice		bge		# Broadcom BCM570xx Gigabit Ethernet
1965119051cbSMarius Strobldevice		cas		# Sun Cassini/Cassini+ and NS DP83065 Saturn
1966d61e6649SAlexander Langerdevice		dc		# DEC/Intel 21143 and various workalikes
19674d52a575SXin LIdevice		et		# Agere ET1310 10/100/Gigabit Ethernet
19684664a8d5SJonathan Lemondevice		fxp		# Intel EtherExpress PRO/100B (82557, 82558)
1969f9ba2bbeSWarner Loshenvvar		hint.fxp.0.prefer_iomap="0"
19701ed3fed7SMarius Strobldevice		gem		# Apple GMAC/Sun ERI/Sun GEM
19710587cad8SPyun YongHyeondevice		jme		# JMicron JMC250 Gigabit/JMC260 Fast Ethernet
1972343ed0a8SJohn Baldwindevice		lge		# Level 1 LXT1001 gigabit Ethernet
19735a73a6c1SWarner Loshdevice		lio		# Support for Cavium 23XX Ethernet adapters
1974c9c8bf05SHans Petter Selaskydevice		mlxfw		# Mellanox firmware update module
197522f2c49aSHans Petter Selaskydevice		mlx5		# Shared code module between IB and Ethernet
197622f2c49aSHans Petter Selaskydevice		mlx5en		# Mellanox ConnectX-4 and ConnectX-4 LX
19770587cad8SPyun YongHyeondevice		msk		# Marvell/SysKonnect Yukon II Gigabit Ethernet
1978d3d67116SMaxim Sobolevdevice		my		# Myson Fast Ethernet (MTD80X, MTD89X)
1979343ed0a8SJohn Baldwindevice		nge		# NatSemi DP83820 gigabit Ethernet
19800587cad8SPyun YongHyeondevice		re		# RealTek 8139C+/8169/8169S/8110S
1981d61e6649SAlexander Langerdevice		rl		# RealTek 8129/8139
1982d193ed0bSPyun YongHyeondevice		sge		# Silicon Integrated Systems SiS190/191
1983d61e6649SAlexander Langerdevice		sis		# Silicon Integrated Systems SiS 900/SiS 7016
1984343ed0a8SJohn Baldwindevice		sk		# SysKonnect SK-984x & SK-982x gigabit Ethernet
1985d61e6649SAlexander Langerdevice		ste		# Sundance ST201 (D-Link DFE-550TX)
19860587cad8SPyun YongHyeondevice		stge		# Sundance/Tamarack TC9021 gigabit Ethernet
1987d61e6649SAlexander Langerdevice		vr		# VIA Rhine, Rhine II
19882608aefcSPyun YongHyeondevice		vte		# DM&P Vortex86 RDC R6040 Fast Ethernet
1989d61e6649SAlexander Langerdevice		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')
1990d61e6649SAlexander Langer
1991c75f49f7SKonstantin Belousov# PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
1992c75f49f7SKonstantin Belousovdevice		iflib
1993c75f49f7SKonstantin Belousovdevice		em		# Intel Pro/1000 Gigabit Ethernet
1994c75f49f7SKonstantin Belousovdevice		ix		# Intel Pro/10Gbe PCIE Ethernet
1995c75f49f7SKonstantin Belousovdevice		ixv		# Intel Pro/10Gbe PCIE Ethernet VF
1996c75f49f7SKonstantin Belousov
1997d61e6649SAlexander Langer# PCI Ethernet NICs.
19987f687043SJohn Baldwindevice		cxgb		# Chelsio T3 10 Gigabit Ethernet
19997f687043SJohn Baldwindevice		cxgb_t3fw	# Chelsio T3 10 Gigabit Ethernet firmware
2000a74031a5SJohn Baldwindevice		cxgbe		# Chelsio T4-T6 1/10/25/40/100 Gigabit Ethernet
2001a74031a5SJohn Baldwindevice		cxgbev		# Chelsio T4-T6 Virtual Functions
200244ac0964SMarius Strobldevice		le		# AMD Am7900 LANCE and Am79C9xx PCnet
2003f9ae0280SAndrew Gallatindevice		mxge		# Myricom Myri-10G 10GbE NIC
20042f345d8eSLuigi Rizzodevice		oce		# Emulex 10 GbE (OneConnect Ethernet)
20056e535f6eSRemko Lodderdevice		ti		# Alteon Networks Tigon I/II gigabit Ethernet
2006d61e6649SAlexander Langer
2007390cee87SJohn Baldwin# PCI IEEE 802.11 Wireless NICs
2008390cee87SJohn Baldwindevice		ath		# Atheros pci/cardbus NIC's
2009390cee87SJohn Baldwindevice		ath_hal		# pci/cardbus chip support
2010390cee87SJohn Baldwin#device		ath_ar5210	# AR5210 chips
2011390cee87SJohn Baldwin#device		ath_ar5211	# AR5211 chips
2012390cee87SJohn Baldwin#device		ath_ar5212	# AR5212 chips
2013390cee87SJohn Baldwin#device		ath_rf2413
2014390cee87SJohn Baldwin#device		ath_rf2417
2015390cee87SJohn Baldwin#device		ath_rf2425
2016390cee87SJohn Baldwin#device		ath_rf5111
2017390cee87SJohn Baldwin#device		ath_rf5112
2018390cee87SJohn Baldwin#device		ath_rf5413
2019390cee87SJohn Baldwin#device		ath_ar5416	# AR5416 chips
2020bc391cb2SWarner Losh# All of the AR5212 parts have a problem when paired with the AR71xx
2021bc391cb2SWarner Losh# CPUS.  These parts have a bug that triggers a fatal bus error on the AR71xx
2022bc391cb2SWarner Losh# only.  Details of the exact nature of the bug are sketchy, but some can be
2023bc391cb2SWarner Losh# found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
2024bc391cb2SWarner Losh# 6.  This option enables this workaround.  There is a performance penalty
2025bc391cb2SWarner Losh# for this work around, but without it things don't work at all.  The DMA
2026bc391cb2SWarner Losh# from the card usually bursts 128 bytes, but on the affected CPUs, only
2027bc391cb2SWarner Losh# 4 are safe.
2028bc391cb2SWarner Loshoptions    	AH_RXCFG_SDMAMW_4BYTES
2029390cee87SJohn Baldwin#device		ath_ar9160	# AR9160 chips
2030390cee87SJohn Baldwin#device		ath_ar9280	# AR9280 chips
203158c4a5a1SRui Paulo#device		ath_ar9285	# AR9285 chips
2032390cee87SJohn Baldwindevice		ath_rate_sample	# SampleRate tx rate control for ath
2033390cee87SJohn Baldwindevice		bwi		# Broadcom BCM430* BCM431*
2034eb5ef23cSWeongyo Jeongdevice		bwn		# Broadcom BCM43xx
2035d1f25d5dSBernhard Schmidtdevice		malo		# Marvell Libertas wireless NICs.
2036d1f25d5dSBernhard Schmidtdevice		mwl		# Marvell 88W8363 802.11n wireless NICs.
2037778eefa4SJohn Baldwindevice		mwlfw
2038390cee87SJohn Baldwindevice		ral		# Ralink Technology RT2500 wireless NICs.
2039b38b13d8SKevin Lodevice		rtwn		# Realtek wireless NICs
2040b38b13d8SKevin Lodevice		rtwnfw
2041390cee87SJohn Baldwin
204210a4360cSPyun YongHyeon# Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
204310a4360cSPyun YongHyeon#options 	TI_SF_BUF_JUMBO
204498cb733cSKenneth D. Merry# Turn on the header splitting option for the ti(4) driver firmware.  This
204598cb733cSKenneth D. Merry# only works for Tigon II chips, and has no effect for Tigon I chips.
204610a4360cSPyun YongHyeon# This option requires the TI_SF_BUF_JUMBO option above.
2047b590f210SPyun YongHyeon#options 	TI_JUMBO_HDRSPLIT
204898cb733cSKenneth D. Merry
20492c8f5a28SKenneth D. Merry# These two options allow manipulating the mbuf cluster size and mbuf size,
20502c8f5a28SKenneth D. Merry# respectively.  Be very careful with NIC driver modules when changing
20512c8f5a28SKenneth D. Merry# these from their default values, because that can potentially cause a
20522c8f5a28SKenneth D. Merry# mismatch between the mbuf size assumed by the kernel and the mbuf size
20532c8f5a28SKenneth D. Merry# assumed by a module.  The only driver that currently has the ability to
20542c8f5a28SKenneth D. Merry# detect a mismatch is ti(4).
2055465988e9SMark Johnstonoptions 	MCLSHIFT=11	# mbuf cluster shift in bits, 11 == 2KB
2056b0b0e4eeSMark Johnstonoptions 	MSIZE=256	# mbuf size in bytes
20572c8f5a28SKenneth D. Merry
2058c19da41eSPeter Wemm#
20590739ea1dSSeigo Tanimura# Sound drivers
2060c19da41eSPeter Wemm#
20610739ea1dSSeigo Tanimura# sound: The generic sound driver.
2062c7406082SJohn-Mark Gurney#
20630739ea1dSSeigo Tanimura
20640739ea1dSSeigo Tanimuradevice		sound
20650739ea1dSSeigo Tanimura
20660739ea1dSSeigo Tanimura#
20670739ea1dSSeigo Tanimura# snd_*: Device-specific drivers.
2068c7406082SJohn-Mark Gurney#
20699c0ef6d5SOliver Fromme# The flags of the device tell the device a bit more info about the
20707f5092f3SJohn Baldwin# device that normally is obtained through the PnP interface.
20717f5092f3SJohn Baldwin#	bit  2..0   secondary DMA channel;
20727f5092f3SJohn Baldwin#	bit  4      set if the board uses two dma channels;
20737f5092f3SJohn Baldwin#	bit 15..8   board type, overrides autodetection; leave it
20747f5092f3SJohn Baldwin#		    zero if don't know what to put in (and you don't,
20757f5092f3SJohn Baldwin#		    since this is unsupported at the moment...).
20767f5092f3SJohn Baldwin#
20770739ea1dSSeigo Tanimura# snd_als4000:		Avance Logic ALS4000 PCI.
2078d9bde1adSAriff Abdullah# snd_atiixp:		ATI IXP 200/300/400 PCI.
20790739ea1dSSeigo Tanimura# snd_cmi:		CMedia CMI8338/CMI8738 PCI.
20800739ea1dSSeigo Tanimura# snd_cs4281:		Crystal Semiconductor CS4281 PCI.
20810739ea1dSSeigo Tanimura# snd_csa:		Crystal Semiconductor CS461x/428x PCI. (except
20820739ea1dSSeigo Tanimura#			4281)
20830739ea1dSSeigo Tanimura# snd_emu10k1:		Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
20840fa7ab6aSAlexander Leidinger# snd_emu10kx:		Creative SoundBlaster Live! and Audigy
20859f548240SAlexander Leidinger# snd_envy24:		VIA Envy24 and compatible, needs snd_spicds.
20869f548240SAlexander Leidinger# snd_envy24ht:		VIA Envy24HT and compatible, needs snd_spicds.
20870739ea1dSSeigo Tanimura# snd_es137x:		Ensoniq AudioPCI ES137x PCI.
20880739ea1dSSeigo Tanimura# snd_fm801:		Forte Media FM801 PCI.
20894b8939a1SAriff Abdullah# snd_hda:		Intel High Definition Audio (Controller) and
20904b8939a1SAriff Abdullah#			compatible.
2091e4afd792SAlexander Motin# snd_hdspe:		RME HDSPe AIO and RayDAT.
209217470869SAlexander Motin# snd_ich:		Intel ICH AC'97 and some more audio controllers
2093903b2fb9SJoel Dahl#			embedded in a chipset, for example nVidia
2094903b2fb9SJoel Dahl#			nForce controllers.
20950739ea1dSSeigo Tanimura# snd_maestro3:		ESS Technology Maestro-3/Allegro PCI.
20960739ea1dSSeigo Tanimura# snd_neomagic:		Neomagic 256 AV/ZX PCI.
20970739ea1dSSeigo Tanimura# snd_solo:		ESS Solo-1x PCI.
2098de8d750fSJoel Dahl# snd_spicds:		SPI codec driver, needed by Envy24/Envy24HT drivers.
2099903b2fb9SJoel Dahl# snd_t4dwave:		Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
21000739ea1dSSeigo Tanimura#			M5451 PCI.
2101de8d750fSJoel Dahl# snd_uaudio:		USB audio.
21020739ea1dSSeigo Tanimura# snd_via8233:		VIA VT8233x PCI.
21030739ea1dSSeigo Tanimura# snd_via82c686:	VIA VT82C686A PCI.
21040739ea1dSSeigo Tanimura# snd_vibes:		S3 Sonicvibes PCI.
210581bb901eSPeter Wemm
2106f37a929cSPeter Wemmdevice		snd_als4000
2107d9bde1adSAriff Abdullahdevice		snd_atiixp
21080739ea1dSSeigo Tanimuradevice		snd_cmi
2109f37a929cSPeter Wemmdevice		snd_cs4281
21100739ea1dSSeigo Tanimuradevice		snd_csa
2111f37a929cSPeter Wemmdevice		snd_emu10k1
21120fa7ab6aSAlexander Leidingerdevice		snd_emu10kx
2113b1ff0220SAlexander Leidingerdevice		snd_envy24
21149f548240SAlexander Leidingerdevice		snd_envy24ht
2115f37a929cSPeter Wemmdevice		snd_es137x
2116f37a929cSPeter Wemmdevice		snd_fm801
21174b8939a1SAriff Abdullahdevice		snd_hda
2118e4afd792SAlexander Motindevice		snd_hdspe
21190739ea1dSSeigo Tanimuradevice		snd_ich
2120f37a929cSPeter Wemmdevice		snd_maestro3
21210739ea1dSSeigo Tanimuradevice		snd_neomagic
21220739ea1dSSeigo Tanimuradevice		snd_solo
21239f548240SAlexander Leidingerdevice		snd_spicds
2124f37a929cSPeter Wemmdevice		snd_t4dwave
2125de8d750fSJoel Dahldevice		snd_uaudio
2126f37a929cSPeter Wemmdevice		snd_via8233
2127f37a929cSPeter Wemmdevice		snd_via82c686
21280739ea1dSSeigo Tanimuradevice		snd_vibes
2129c19da41eSPeter Wemm
21301c9c6382SRuslan Ermilov# For non-PnP sound cards:
2131f9ba2bbeSWarner Loshenvvar		hint.pcm.0.at="isa"
2132f9ba2bbeSWarner Loshenvvar		hint.pcm.0.irq="10"
2133f9ba2bbeSWarner Loshenvvar		hint.pcm.0.drq="1"
2134f9ba2bbeSWarner Loshenvvar		hint.pcm.0.flags="0x0"
2135f9ba2bbeSWarner Loshenvvar		hint.sbc.0.at="isa"
2136f9ba2bbeSWarner Loshenvvar		hint.sbc.0.port="0x220"
2137f9ba2bbeSWarner Loshenvvar		hint.sbc.0.irq="5"
2138f9ba2bbeSWarner Loshenvvar		hint.sbc.0.drq="1"
2139f9ba2bbeSWarner Loshenvvar		hint.sbc.0.flags="0x15"
2140f9ba2bbeSWarner Loshenvvar		hint.gusc.0.at="isa"
2141f9ba2bbeSWarner Loshenvvar		hint.gusc.0.port="0x220"
2142f9ba2bbeSWarner Loshenvvar		hint.gusc.0.irq="5"
2143f9ba2bbeSWarner Loshenvvar		hint.gusc.0.drq="1"
2144f9ba2bbeSWarner Loshenvvar		hint.gusc.0.flags="0x13"
21457f5092f3SJohn Baldwin
21466a8d6623SGarrett Wollman#
214718fe4678SAriff Abdullah# Following options are intended for debugging/testing purposes:
214818fe4678SAriff Abdullah#
214918fe4678SAriff Abdullah# SND_DEBUG                    Enable extra debugging code that includes
215018fe4678SAriff Abdullah#                              sanity checking and possible increase of
215118fe4678SAriff Abdullah#                              verbosity.
215218fe4678SAriff Abdullah#
2153d51e8487SJosh Paetzel# SND_DIAGNOSTIC               Similar in a spirit of INVARIANTS/DIAGNOSTIC,
215418fe4678SAriff Abdullah#                              zero tolerance against inconsistencies.
215518fe4678SAriff Abdullah#
215618fe4678SAriff Abdullah# SND_FEEDER_MULTIFORMAT       By default, only 16/32 bit feeders are compiled
215718fe4678SAriff Abdullah#                              in. This options enable most feeder converters
215818fe4678SAriff Abdullah#                              except for 8bit. WARNING: May bloat the kernel.
215918fe4678SAriff Abdullah#
216018fe4678SAriff Abdullah# SND_FEEDER_FULL_MULTIFORMAT  Ditto, but includes 8bit feeders as well.
216118fe4678SAriff Abdullah#
216218fe4678SAriff Abdullah# SND_FEEDER_RATE_HP           (feeder_rate) High precision 64bit arithmetic
216318fe4678SAriff Abdullah#                              as much as possible (the default trying to
216418fe4678SAriff Abdullah#                              avoid it). Possible slowdown.
216518fe4678SAriff Abdullah#
216618fe4678SAriff Abdullah# SND_PCM_64                   (Only applicable for i386/32bit arch)
216718fe4678SAriff Abdullah#                              Process 32bit samples through 64bit
216818fe4678SAriff Abdullah#                              integer/arithmetic. Slight increase of dynamic
216918fe4678SAriff Abdullah#                              range at a cost of possible slowdown.
217018fe4678SAriff Abdullah#
217118fe4678SAriff Abdullah# SND_OLDSTEREO                Only 2 channels are allowed, effectively
217218fe4678SAriff Abdullah#                              disabling multichannel processing.
217318fe4678SAriff Abdullah#
217418fe4678SAriff Abdullahoptions 	SND_DEBUG
217518fe4678SAriff Abdullahoptions 	SND_DIAGNOSTIC
217618fe4678SAriff Abdullahoptions 	SND_FEEDER_MULTIFORMAT
217718fe4678SAriff Abdullahoptions 	SND_FEEDER_FULL_MULTIFORMAT
217818fe4678SAriff Abdullahoptions 	SND_FEEDER_RATE_HP
217918fe4678SAriff Abdullahoptions 	SND_PCM_64
218018fe4678SAriff Abdullahoptions 	SND_OLDSTEREO
218118fe4678SAriff Abdullah
218218fe4678SAriff Abdullah#
2183b4fba31bSWarner Losh# Cardbus
21846e818956SDavid E. O'Brien#
2185b4fba31bSWarner Losh# cbb: pci/CardBus bridge implementing YENTA interface
2186b4fba31bSWarner Losh# cardbus: CardBus slots
21876e818956SDavid E. O'Briendevice		cbb
21886e818956SDavid E. O'Briendevice		cardbus
21896e818956SDavid E. O'Brien
21906e818956SDavid E. O'Brien#
21915bcb64f2SWarner Losh# MMC/SD
21925bcb64f2SWarner Losh#
2193831f5dcfSAlexander Motin# mmc 		MMC/SD bus
2194831f5dcfSAlexander Motin# mmcsd		MMC/SD memory card
2195831f5dcfSAlexander Motin# sdhci		Generic PCI SD Host Controller
2196926ce35aSJung-uk Kim# rtsx		Realtek SD card reader (RTS5209, RTS5227, ...)
2197831f5dcfSAlexander Motindevice		mmc
2198831f5dcfSAlexander Motindevice		mmcsd
2199831f5dcfSAlexander Motindevice		sdhci
2200926ce35aSJung-uk Kimdevice		rtsx
22015bcb64f2SWarner Losh
22025bcb64f2SWarner Losh#
22038afa373cSNicolas Souchu# SMB bus
22048afa373cSNicolas Souchu#
22053c5656bfSArchie Cobbs# System Management Bus support is provided by the 'smbus' device.
22063c5656bfSArchie Cobbs# Access to the SMBus device is via the 'smb' device (/dev/smb*),
22073c5656bfSArchie Cobbs# which is a child of the 'smbus' device.
22088afa373cSNicolas Souchu#
22098afa373cSNicolas Souchu# Supported devices:
22104d5f30e0SRuslan Ermilov# smb		standard I/O through /dev/smb*
22118afa373cSNicolas Souchu#
22123c5656bfSArchie Cobbs# Supported SMB interfaces:
221328ebb692SNicolas Souchu# iicsmb	I2C to SMB bridge with any iicbus interface
22147f5092f3SJohn Baldwin# intpm		Intel PIIX4 (82371AB, 82443MX) Power Management Unit
22157f5092f3SJohn Baldwin# alpm		Acer Aladdin-IV/V/Pro2 Power Management Unit
22167f5092f3SJohn Baldwin# ichsmb	Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
22177f5092f3SJohn Baldwin# viapm		VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2218b1acc4a2SMurray Stokely# amdpm		AMD 756 Power Management Unit
22194d5f30e0SRuslan Ermilov# amdsmb	AMD 8111 SMBus 2.0 Controller
222044e6ce01SNicolas Souchu# nfpm		NVIDIA nForce Power Management Unit
22214d5f30e0SRuslan Ermilov# nfsmb		NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
22220572ccaaSJim Harris# ismt		Intel SMBus 2.0 controller chips (on Atom S1200, C2000)
22238afa373cSNicolas Souchu#
2224c9953c3bSPeter Wemmdevice		smbus		# Bus support, required for smb below.
22253c5656bfSArchie Cobbs
22267f5092f3SJohn Baldwindevice		intpm
2227*5ea0b892SJohn Baldwinoptions 	ENABLE_ALART	# Control alarm on Intel intpm driver
22287f5092f3SJohn Baldwindevice		alpm
22297f5092f3SJohn Baldwindevice		ichsmb
22307f5092f3SJohn Baldwindevice		viapm
223144e6ce01SNicolas Souchudevice		amdpm
22324d5f30e0SRuslan Ermilovdevice		amdsmb
223344e6ce01SNicolas Souchudevice		nfpm
22344d5f30e0SRuslan Ermilovdevice		nfsmb
22350572ccaaSJim Harrisdevice		ismt
22367f5092f3SJohn Baldwin
2237c9953c3bSPeter Wemmdevice		smb
22388afa373cSNicolas Souchu
22394afdfe97SAndriy Gapon# SMBus peripheral devices
22408afa373cSNicolas Souchu#
2241dcd935dfSRavi Pokala# jedec_dimm	Asset and temperature reporting for DDR3 and DDR4 DIMMs
22424afdfe97SAndriy Gapon#
2243dcd935dfSRavi Pokaladevice		jedec_dimm
22444afdfe97SAndriy Gapon
22458afa373cSNicolas Souchu# I2C Bus
22468afa373cSNicolas Souchu#
22478afa373cSNicolas Souchu# Philips i2c bus support is provided by the `iicbus' device.
22488afa373cSNicolas Souchu#
22498afa373cSNicolas Souchu# Supported devices:
22508afa373cSNicolas Souchu# ic	i2c network interface
22518afa373cSNicolas Souchu# iic	i2c standard io
2252f7d09fbaSNicolas Souchu# iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
22531ab68cbbSJayachandran C.# iicoc simple polling driver for OpenCores I2C controller
22548afa373cSNicolas Souchu#
225528ebb692SNicolas Souchu# Other:
2256daba5aceSWarner Losh# iicbb	generic I2C bit-banging code (needed by lpbb)
22578afa373cSNicolas Souchu#
2258c9953c3bSPeter Wemmdevice		iicbus		# Bus support, required for ic/iic/iicsmb below.
22596f3bd9a6SIan Leporedevice		iicbb		# bitbang driver; implements i2c on a pair of gpio pins
22608afa373cSNicolas Souchu
2261c9953c3bSPeter Wemmdevice		ic
22626f3bd9a6SIan Leporedevice		iic		# userland access to i2c slave devices via ioctl(8)
2263c9953c3bSPeter Wemmdevice		iicsmb		# smb over i2c bridge
22641ab68cbbSJayachandran C.device		iicoc		# OpenCores I2C controller support
22658afa373cSNicolas Souchu
2266422d05daSIan Lepore# I2C bus multiplexer (mux) devices
2267422d05daSIan Leporedevice		iicmux		# i2c mux core driver
2268422d05daSIan Leporedevice		iic_gpiomux	# i2c mux hardware controlled via gpio pins
2269422d05daSIan Leporedevice		ltc430x		# LTC4305 and LTC4306 i2c mux chips
2270422d05daSIan Lepore
2271286fa445SRafal Jaworowski# I2C peripheral devices
2272286fa445SRafal Jaworowski#
2273ac6a9e47SIan Leporedevice		ad7418		# Analog Devices temp and voltage sensor
22745177d294SIan Leporedevice		ads111x		# Texas Instruments ADS101x and ADS111x ADCs
227546ec180eSIan Leporedevice		ds1307		# Dallas DS1307 RTC and compatible
2276bb2e8108SIan Leporedevice		ds13rtc		# All Dallas/Maxim ds13xx chips
227746ec180eSIan Leporedevice		ds1672		# Dallas DS1672 RTC
227846ec180eSIan Leporedevice		ds3231		# Dallas DS3231 RTC + temperature
2279bf3a3852SBjoern A. Zeebdevice		fan53555	# Fairchild Semi FAN53555/SYR82x Regulator
228046ec180eSIan Leporedevice		icee		# AT24Cxxx and compatible EEPROMs
2281ac6a9e47SIan Leporedevice		isl12xx		# Intersil ISL12xx RTC
228246ec180eSIan Leporedevice		lm75		# LM75 compatible temperature sensor
228346ec180eSIan Leporedevice		nxprtc		# NXP RTCs: PCA/PFC212x PCA/PCF85xx
2284ac6a9e47SIan Leporedevice		rtc8583		# Epson RTC-8583
228546ec180eSIan Leporedevice		s35390a		# Seiko Instruments S-35390A RTC
2286ac6a9e47SIan Leporedevice		sy8106a		# Silergy Corp. SY8106A buck regulator
2287286fa445SRafal Jaworowski
2288ab4c624bSMike Smith# Parallel-Port Bus
2289ab4c624bSMike Smith#
2290ab4c624bSMike Smith# Parallel port bus support is provided by the `ppbus' device.
2291ab4c624bSMike Smith# Multiple devices may be attached to the parallel port, devices
2292ab4c624bSMike Smith# are automatically probed and attached when found.
2293ab4c624bSMike Smith#
2294ab4c624bSMike Smith# Supported devices:
2295fdf94d1aSNicolas Souchu# lpt	Parallel Printer
229646f3ff79SMike Smith# plip	Parallel network interface
2297fdf94d1aSNicolas Souchu# ppi	General-purpose I/O ("Geek Port") + IEEE1284 I/O
2298f7d09fbaSNicolas Souchu# pps	Pulse per second Timing Interface
229928ebb692SNicolas Souchu# lpbb	Philips official parallel port I2C bit-banging interface
23001caef332SWojciech A. Koszek# pcfclock Parallel port clock driver.
2301ab4c624bSMike Smith#
2302ab4c624bSMike Smith# Supported interfaces:
2303ab4c624bSMike Smith# ppc	ISA-bus parallel port interfaces.
2304ab4c624bSMike Smith#
2305ef8f7626SNicolas Souchu
23060f210c92SNicolas Souchuoptions 	PPC_PROBE_CHIPSET # Enable chipset specific detection
23070f210c92SNicolas Souchu				  # (see flags in ppc(4))
23085895e3c8SPeter Wemmoptions 	DEBUG_1284	# IEEE1284 signaling protocol debug
23099d5abbddSJens Schweikhardtoptions 	PERIPH_1284	# Makes your computer act as an IEEE1284
2310ef8f7626SNicolas Souchu				# compliant peripheral
23115895e3c8SPeter Wemmoptions 	DONTPROBE_1284	# Avoid boot detection of PnP parallel devices
23125895e3c8SPeter Wemmoptions 	LPT_DEBUG	# Printer driver debug
23135895e3c8SPeter Wemmoptions 	PPC_DEBUG	# Parallel chipset level debug
23145895e3c8SPeter Wemmoptions 	PLIP_DEBUG	# Parallel network IP interface debug
23153b2d592cSJordan K. Hubbardoptions 	PCFCLOCK_VERBOSE         # Verbose pcfclock driver
23163b2d592cSJordan K. Hubbardoptions 	PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)
2317ef8f7626SNicolas Souchu
2318f71c01ccSPeter Wemmdevice		ppc
2319f9ba2bbeSWarner Loshenvvar		hint.ppc.0.at="isa"
2320f9ba2bbeSWarner Loshenvvar		hint.ppc.0.irq="7"
23210d31b179SPeter Wemmdevice		ppbus
23220d31b179SPeter Wemmdevice		lpt
23230d31b179SPeter Wemmdevice		plip
23240d31b179SPeter Wemmdevice		ppi
23250d31b179SPeter Wemmdevice		pps
23260d31b179SPeter Wemmdevice		lpbb
23270d31b179SPeter Wemmdevice		pcfclock
2328ab4c624bSMike Smith
23296e36309dSIan Lepore# General Purpose I/O pins
2330446e035cSRuslan Bukindevice		dwgpio		# Synopsys DesignWare APB GPIO Controller
23316e36309dSIan Leporedevice  	gpio		# gpio interfaces and bus support
23326e36309dSIan Leporedevice  	gpiobacklight	# sysctl control of gpio-based backlight
23336e36309dSIan Leporedevice  	gpioiic		# i2c via gpio bitbang
23346e36309dSIan Leporedevice  	gpiokeys	# kbd(4) glue for gpio-based key input
23356e36309dSIan Leporedevice  	gpioled		# led(4) gpio glue
23366e36309dSIan Leporedevice  	gpiopower	# event handler for gpio-based powerdown
23376e36309dSIan Leporedevice  	gpiopps		# Pulse per second input from gpio pin
23386e36309dSIan Leporedevice  	gpioregulator	# extres/regulator glue for gpio pin
23396e36309dSIan Leporedevice  	gpiospi		# SPI via gpio bitbang
23406e36309dSIan Leporedevice  	gpioths		# 1-wire temp/humidity sensor on gpio pin
23416e36309dSIan Lepore
23420bab2b6eSIan Lepore# Pulse width modulation
23430bab2b6eSIan Leporedevice  	pwmbus		# pwm interface and bus support
23440bab2b6eSIan Leporedevice  	pwmc		# userland control access to pwm outputs
23450bab2b6eSIan Lepore
2346f45757caSChristian Brueffer#
2347f45757caSChristian Brueffer# Etherswitch framework and drivers
2348f45757caSChristian Brueffer#
2349f45757caSChristian Brueffer# etherswitch	The etherswitch(4) framework
2350f45757caSChristian Brueffer# miiproxy	Proxy device for miibus(4) functionality
2351f45757caSChristian Brueffer#
2352f45757caSChristian Brueffer# Switch hardware support:
2353f45757caSChristian Brueffer# arswitch	Atheros switches
2354f45757caSChristian Brueffer# ip17x 	IC+ 17x family switches
2355f45757caSChristian Brueffer# rtl8366r	Realtek RTL8366 switches
2356f45757caSChristian Brueffer# ukswitch	Multi-PHY switches
2357f45757caSChristian Brueffer#
2358f45757caSChristian Bruefferdevice		etherswitch
2359f45757caSChristian Bruefferdevice		miiproxy
2360f45757caSChristian Bruefferdevice		arswitch
2361f45757caSChristian Bruefferdevice		ip17x
2362f45757caSChristian Bruefferdevice		rtl8366rb
2363f45757caSChristian Bruefferdevice		ukswitch
2364f45757caSChristian Brueffer
23650ac40133SBrian Somers# Kernel BOOTP support
23660ac40133SBrian Somers
23670ac40133SBrian Somersoptions 	BOOTP		# Use BOOTP to obtain IP address/hostname
2368c15882f0SRick Macklem				# Requires NFSCL and NFS_ROOT
23690ac40133SBrian Somersoptions 	BOOTP_NFSROOT	# NFS mount root filesystem using BOOTP info
23700ac40133SBrian Somersoptions 	BOOTP_NFSV3	# Use NFS v3 to NFS mount root
23710ac40133SBrian Somersoptions 	BOOTP_COMPAT	# Workaround for broken bootp daemons.
23720ac40133SBrian Somersoptions 	BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2373eead3ae9SBenno Riceoptions 	BOOTP_BLOCKSIZE=8192 # Override NFS block size
2374432aad0eSTor Egge
2375d94f38acSEivind Eklund#
2376d626b50bSMike Karels# Enable software watchdog routines, even if hardware watchdog is present.
2377d626b50bSMike Karels# By default, software watchdog timer is enabled only if no hardware watchdog
2378d626b50bSMike Karels# is present.
2379370c3cb5SSean Kelly#
23804103b765SPoul-Henning Kampoptions 	SW_WATCHDOG
2381370c3cb5SSean Kelly
2382370c3cb5SSean Kelly#
2383f7829d0dSAttilio Rao# Add the software deadlock resolver thread.
2384f7829d0dSAttilio Rao#
2385f7829d0dSAttilio Raooptions 	DEADLKRES
2386f7829d0dSAttilio Rao
2387f7829d0dSAttilio Rao#
2388b99d6e6fSDavid Schultz# Disable swapping of stack pages.  This option removes all
23894e0ee531SMike Barcroft# code which actually performs swapping, so it's not possible to turn
23904e0ee531SMike Barcroft# it back on at run-time.
2391c796cfa1SAndrzej Bialecki#
2392c796cfa1SAndrzej Bialecki# This is sometimes usable for systems which don't have any swap space
23933c4c0efdSBryan Drewery# (see also sysctl "vm.disable_swapspace_pageouts")
2394c796cfa1SAndrzej Bialecki#
239519dde963SPeter Wemm#options 	NO_SWAPPING
2396c796cfa1SAndrzej Bialecki
23979dab0776SDavid Greenman# Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
23989dab0776SDavid Greenman# for sendfile(2) that are used to map file VM pages, and normally
23999dab0776SDavid Greenman# default to a quantity that is roughly 16*MAXUSERS+512. You would
24009dab0776SDavid Greenman# typically want about 4 of these for each simultaneous file send.
24019dab0776SDavid Greenman#
24025895e3c8SPeter Wemmoptions 	NSFBUFS=1024
24039dab0776SDavid Greenman
240415a1057cSEivind Eklund#
2405053a2b61SEivind Eklund# Enable extra debugging code for locks.  This stores the filename and
24069c0ef6d5SOliver Fromme# line of whatever acquired the lock in the lock itself, and changes a
2407053a2b61SEivind Eklund# number of function calls to pass around the relevant data.  This is
24082c048c4aSBryan Drewery# not at all useful unless you are debugging lock code.  Note that
24092c048c4aSBryan Drewery# modules should be recompiled as this option modifies KBI.
241015a1057cSEivind Eklund#
241115a1057cSEivind Eklundoptions 	DEBUG_LOCKS
241215a1057cSEivind Eklund
24131f678b6bSJohn Baldwin#
24141f678b6bSJohn Baldwin# VirtIO support
24151f678b6bSJohn Baldwin#
24161f678b6bSJohn Baldwin# The virtio entry provides a generic bus for use by the device drivers.
24171f678b6bSJohn Baldwin# It must be combined with an interface that communicates with the host.
24181f678b6bSJohn Baldwin# Multiple such interfaces are defined by the VirtIO specification
24191f678b6bSJohn Baldwin# including PCI and MMIO.
24201f678b6bSJohn Baldwin#
24211f678b6bSJohn Baldwindevice		virtio		# Generic VirtIO bus (required)
24221f678b6bSJohn Baldwindevice		virtio_mmio	# VirtIO MMIO Interface
24231f678b6bSJohn Baldwindevice		virtio_pci	# VirtIO PCI Interface
24241f678b6bSJohn Baldwindevice		vtnet		# VirtIO Ethernet device
24251f678b6bSJohn Baldwindevice		virtio_balloon	# VirtIO Memory Balloon device
24261f678b6bSJohn Baldwindevice		virtio_blk	# VirtIO Block device
24271f678b6bSJohn Baldwindevice		virtio_console	# VirtIO Console device
24281f678b6bSJohn Baldwindevice		virtio_gpu	# VirtIO GPU device
24291f678b6bSJohn Baldwindevice		virtio_random	# VirtIO Entropy device
24301f678b6bSJohn Baldwindevice		virtio_scmi	# VirtIO SCSI device
24311f678b6bSJohn Baldwindevice		virtio_scsi	# VirtIO SCMI device
24321f678b6bSJohn Baldwin
2433a898ee51SHans Petter Selasky#####################################################################
24340f0379faSVladimir Kondratyev# HID support
24350f0379faSVladimir Kondratyevdevice		hid		# Generic HID support
24360f0379faSVladimir Kondratyevoptions 	HID_DEBUG	# enable debug msgs
24370f0379faSVladimir Kondratyevdevice		hidbus		# HID bus
24380f0379faSVladimir Kondratyevdevice		hidmap		# HID to evdev mapping
24390f0379faSVladimir Kondratyevdevice		hidraw		# Raw access driver
24400f0379faSVladimir Kondratyevoptions 	HIDRAW_MAKE_UHID_ALIAS	# install /dev/uhid alias
24410f0379faSVladimir Kondratyevdevice		hconf		# Multitouch configuration TLC
24420f0379faSVladimir Kondratyevdevice		hcons		# Consumer controls
24430f0379faSVladimir Kondratyevdevice		hgame		# Generic game controllers
24440f0379faSVladimir Kondratyevdevice		hkbd		# HID keyboard
24450f0379faSVladimir Kondratyevdevice		hms		# HID mouse
24460f0379faSVladimir Kondratyevdevice		hmt		# HID multitouch (MS-compatible)
24470f0379faSVladimir Kondratyevdevice		hpen		# Generic pen driver
24480f0379faSVladimir Kondratyevdevice		hsctrl		# System controls
24490f0379faSVladimir Kondratyevdevice		ps4dshock	# Sony PS4 DualShock 4 gamepad driver
24500f0379faSVladimir Kondratyevdevice		xb360gp		# XBox 360 gamepad driver
2451a898ee51SHans Petter Selasky
245226086a03SPeter Wemm#####################################################################
24531d33cf3dSNick Hibma# USB support
24541d33cf3dSNick Hibma# UHCI controller
2455c9953c3bSPeter Wemmdevice		uhci
24561d33cf3dSNick Hibma# OHCI controller
2457c9953c3bSPeter Wemmdevice		ohci
2458ca3acad1SBernd Walter# EHCI controller
2459ca3acad1SBernd Walterdevice		ehci
2460857508a3SAndrew Thompson# XHCI controller
2461857508a3SAndrew Thompsondevice		xhci
246239e5901eSTakanori Watanabe# SL811 Controller
2463b92755d1SAndrew Thompson#device		slhci
24641d33cf3dSNick Hibma# General USB code (mandatory for USB)
2465c9953c3bSPeter Wemmdevice		usb
24661d33cf3dSNick Hibma#
2467b5ea1f0cSNick Hibma# USB Double Bulk Pipe devices
2468b5ea1f0cSNick Hibmadevice		udbp
24692d45d793SHans Petter Selasky# USB temperature meter
24702d45d793SHans Petter Selaskydevice		ugold
24716bd03b20SKevin Lo# USB LED
24726bd03b20SKevin Lodevice		uled
2473f26c33d2SNick Hibma# Human Interface Device (anything with buttons and dials)
2474c9953c3bSPeter Wemmdevice		uhid
24751d33cf3dSNick Hibma# USB keyboard
2476c9953c3bSPeter Wemmdevice		ukbd
24771d33cf3dSNick Hibma# USB printer
2478c9953c3bSPeter Wemmdevice		ulpt
247931615ef7SRebecca Cran# USB mass storage driver (Requires scbus and da)
2480c9953c3bSPeter Wemmdevice		umass
248131615ef7SRebecca Cran# USB mass storage driver for device-side mode
248231615ef7SRebecca Crandevice		usfs
2483ce17576aSScott Long# USB support for Belkin F5U109 and Magic Control Technology serial adapters
2484ce17576aSScott Longdevice		umct
2485e9fb12d3SNick Hibma# USB modem support
2486e9fb12d3SNick Hibmadevice		umodem
2487f26c33d2SNick Hibma# USB mouse
2488c9953c3bSPeter Wemmdevice		ums
2489eed447b5SHans Petter Selasky# USB touchpad(s)
2490eed447b5SHans Petter Selaskydevice		atp
2491eed447b5SHans Petter Selaskydevice		wsp
2492f25a8a01SGleb Smirnoff# eGalax USB touch screen
2493f25a8a01SGleb Smirnoffdevice		uep
24941c9c6382SRuslan Ermilov# Diamond Rio 500 MP3 player
2495e2dbd15fSNick Hibmadevice		urio
24960f0379faSVladimir Kondratyev# HID-over-USB driver
24970f0379faSVladimir Kondratyevdevice		usbhid
24980f0379faSVladimir Kondratyev
2499d1233ab3SBruce Evans#
2500916e6e02SJosef Karthauser# USB serial support
2501916e6e02SJosef Karthauserdevice		ucom
2502fe75118bSNick Hibma# USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
2503483b9e47SNick Hibmadevice		u3g
25049aab0d96SMaxim Konovalov# USB support for Technologies ARK3116 based serial adapters
25059aab0d96SMaxim Konovalovdevice		uark
2506d1233ab3SBruce Evans# USB support for Belkin F5U103 and compatible serial adapters
2507d1233ab3SBruce Evansdevice		ubsa
250848b68edfSJosef Karthauser# USB support for serial adapters based on the FT8U100AX and FT8U232AM
250948b68edfSJosef Karthauserdevice		uftdi
2510c5286e11STakanori Watanabe# USB support for some Windows CE based serial communication.
2511c5286e11STakanori Watanabedevice		uipaq
251248b68edfSJosef Karthauser# USB support for Prolific PL-2303 serial adapters
2513916e6e02SJosef Karthauserdevice		uplcom
25142e7328e7SRink Springer# USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
25152e7328e7SRink Springerdevice		uslcom
251648b68edfSJosef Karthauser# USB Visor and Palm devices
251748b68edfSJosef Karthauserdevice		uvisor
2518d1233ab3SBruce Evans# USB serial support for DDI pocket's PHS
2519d1233ab3SBruce Evansdevice		uvscom
2520f26c33d2SNick Hibma#
2521ff6b30b9SKevin Lo# USB ethernet support
2522ff6b30b9SKevin Lodevice		uether
2523ed63a7aaSBill Paul# ADMtek USB ethernet. Supports the LinkSys USB100TX,
2524d04bb221SBill Paul# the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2525d04bb221SBill Paul# and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2526d04bb221SBill Paul# eval board.
2527c9953c3bSPeter Wemmdevice		aue
2528bf029145SRobert Watson
2529bf029145SRobert Watson# ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2530bf029145SRobert Watson# LinkSys USB200M and various other adapters.
2531bf029145SRobert Watsondevice		axe
253279eb99dfSLi-Wen Hsu# ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
253379eb99dfSLi-Wen Hsudevice		axge
2534bf029145SRobert Watson
2535dfd1e98eSBill Paul#
25366bcf0032SMaxim Sobolev# Devices which communicate using Ethernet over USB, particularly
25376bcf0032SMaxim Sobolev# Communication Device Class (CDC) Ethernet specification. Supports
25386bcf0032SMaxim Sobolev# Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
25396bcf0032SMaxim Sobolevdevice		cdce
25406bcf0032SMaxim Sobolev#
254101779872SBill Paul# CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
254201779872SBill Paul# and Netmate II, and the Belkin F5U111.
2543c9953c3bSPeter Wemmdevice		cue
254401779872SBill Paul#
2545dfd1e98eSBill Paul# Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2546d04bb221SBill Paul# Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2547d04bb221SBill Paul# 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
254801779872SBill Paul# the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
254901779872SBill Paul# and 2104USB, and the Corega USB-T.
2550c9953c3bSPeter Wemmdevice		kue
255111e04b05SShunsuke Akiyama#
255211e04b05SShunsuke Akiyama# RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
255311e04b05SShunsuke Akiyama# and the GREEN HOUSE GH-USB100B.
255411e04b05SShunsuke Akiyamadevice		rue
2555cdd40f3bSMIHIRA Sanpei Yoshiro#
2556cdd40f3bSMIHIRA Sanpei Yoshiro# Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2557cdd40f3bSMIHIRA Sanpei Yoshirodevice		udav
2558941e2863SAndrew Thompson#
2559a24d62b5SKevin Lo# RealTek RTL8152/RTL8153 USB Ethernet driver
2560e1b74f21SKevin Lodevice		ure
2561e1b74f21SKevin Lo#
256222445463SKevin Lo# Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
256322445463SKevin Lodevice		mos
256422445463SKevin Lo#
2565941e2863SAndrew Thompson# HSxPA devices from Option N.V
2566941e2863SAndrew Thompsondevice		uhso
2567cdd40f3bSMIHIRA Sanpei Yoshiro
256831d98677SRui Paulo# Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
256931d98677SRui Paulodevice		rsu
25708a4cd00aSWarner Losh#
257171aa1d32SSam Leffler# Ralink Technology RT2501USB/RT2601USB wireless driver
257271aa1d32SSam Lefflerdevice		rum
257393393dfdSAndrew Thompson# Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
257493393dfdSAndrew Thompsondevice		run
25758a4cd00aSWarner Losh#
257671aa1d32SSam Leffler# Atheros AR5523 wireless driver
257771aa1d32SSam Lefflerdevice		uath
257871aa1d32SSam Leffler#
2579d1f25d5dSBernhard Schmidt# Conexant/Intersil PrismGT wireless driver
2580d1f25d5dSBernhard Schmidtdevice		upgt
2581d1f25d5dSBernhard Schmidt#
258271aa1d32SSam Leffler# Ralink Technology RT2500USB wireless driver
25838a4cd00aSWarner Loshdevice		ural
25848a4cd00aSWarner Losh#
258529311227SHans Petter Selasky# RNDIS USB ethernet driver
258629311227SHans Petter Selaskydevice		urndis
25875aaea652SKevin Lo# Realtek RTL8187B/L wireless driver
25885aaea652SKevin Lodevice		urtw
25895aaea652SKevin Lo#
259071aa1d32SSam Leffler# ZyDas ZD1211/ZD1211B wireless driver
259171aa1d32SSam Lefflerdevice		zyd
259245b395cdSGleb Smirnoff#
259345b395cdSGleb Smirnoff# Sierra USB wireless driver
259445b395cdSGleb Smirnoffdevice		usie
2595f26c33d2SNick Hibma
25968a4cd00aSWarner Losh#
2597f26c33d2SNick Hibma# debugging options for the USB subsystem
25981d33cf3dSNick Hibma#
25991d33cf3dSNick Hibmaoptions 	USB_DEBUG
2600fe75118bSNick Hibmaoptions 	U3G_DEBUG
2601f26c33d2SNick Hibma
26026e8394b8SKazutaka YOKOTA# options for ukbd:
26036e8394b8SKazutaka YOKOTAoptions 	UKBD_DFLT_KEYMAP	# specify the built-in keymap
2604440f1cf7SBruce Evansmakeoptions	UKBD_DFLT_KEYMAP=jp.106
26056e8394b8SKazutaka YOKOTA
2606565f53bbSShunsuke Akiyama# options for uplcom:
26073c7c6c12SMike Pritchardoptions 	UPLCOM_INTR_INTERVAL=100	# interrupt pipe interval
2608565f53bbSShunsuke Akiyama						# in milliseconds
2609565f53bbSShunsuke Akiyama
261020280807SShunsuke Akiyama# options for uvscom:
261120280807SShunsuke Akiyamaoptions 	UVSCOM_DEFAULT_OPKTSIZE=8	# default output packet size
26123c7c6c12SMike Pritchardoptions 	UVSCOM_INTR_INTERVAL=100	# interrupt pipe interval
2613565f53bbSShunsuke Akiyama						# in milliseconds
261420280807SShunsuke Akiyama
26158b7ce2ffSSam Leffler#####################################################################
2616869093b1SHidetoshi Shimokawa# FireWire support
26177d2ba89bSJohn Baldwin
2618869093b1SHidetoshi Shimokawadevice		firewire	# FireWire bus code
26197d2ba89bSJohn Baldwindevice		sbp		# SCSI over Firewire (Requires scbus and da)
262079acdabbSHidetoshi Shimokawadevice		sbp_targ	# SBP-2 Target mode  (Requires scbus and targ)
2621869093b1SHidetoshi Shimokawadevice		fwe		# Ethernet over FireWire (non-standard!)
26221c9c6382SRuslan Ermilovdevice		fwip		# IP over FireWire (RFC2734 and RFC3146)
2623869093b1SHidetoshi Shimokawa
2624869093b1SHidetoshi Shimokawa#####################################################################
2625869093b1SHidetoshi Shimokawa# dcons support (Dumb Console Device)
2626869093b1SHidetoshi Shimokawa
2627869093b1SHidetoshi Shimokawadevice		dcons			# dumb console driver
2628869093b1SHidetoshi Shimokawadevice		dcons_crom		# FireWire attachment
2629869093b1SHidetoshi Shimokawaoptions 	DCONS_BUF_SIZE=16384	# buffer size
2630869093b1SHidetoshi Shimokawaoptions 	DCONS_POLL_HZ=100	# polling rate
2631869093b1SHidetoshi Shimokawaoptions 	DCONS_FORCE_CONSOLE=0	# force to be the primary console
2632869093b1SHidetoshi Shimokawaoptions 	DCONS_FORCE_GDB=1	# force to be the gdb device
26337d2ba89bSJohn Baldwin
26347d2ba89bSJohn Baldwin#####################################################################
26358b7ce2ffSSam Leffler# crypto subsystem
26368b7ce2ffSSam Leffler#
26371c9c6382SRuslan Ermilov# This is a port of the OpenBSD crypto framework.  Include this when
2638b2630c29SGeorge V. Neville-Neil# configuring IPSEC and when you have a h/w crypto device to accelerate
26391c9c6382SRuslan Ermilov# user applications that link to OpenSSL.
26408b7ce2ffSSam Leffler#
26411c9c6382SRuslan Ermilov# Drivers are ports from OpenBSD with some simple enhancements that have
26421c9c6382SRuslan Ermilov# been fed back to OpenBSD.
26438b7ce2ffSSam Leffler
26448b7ce2ffSSam Lefflerdevice		crypto		# core crypto support
2645b65946c6SJohn-Mark Gurney
2646b65946c6SJohn-Mark Gurney# Only install the cryptodev device if you are running tests, or know
2647e0b231cbSJohn-Mark Gurney# specifically why you need it.  In most cases, it is not needed and
2648e0b231cbSJohn-Mark Gurney# will make things slower.
26498b7ce2ffSSam Lefflerdevice		cryptodev	# /dev/crypto for access to h/w
26508b7ce2ffSSam Leffler
2651ac7e2c05SSam Lefflerdevice		rndtest		# FIPS 140-2 entropy tester
26528b7ce2ffSSam Leffler
26535033c43bSJohn Baldwindevice		ccr		# Chelsio T6
26545033c43bSJohn Baldwin
2655b7c4858fSSam Lefflerdevice		hifn		# Hifn 7951, 7781, etc.
2656b7c4858fSSam Leffleroptions 	HIFN_DEBUG	# enable debugging support: hw.hifn.debug
2657b7c4858fSSam Leffleroptions 	HIFN_RNDTEST	# enable rndtest support
2658b7c4858fSSam Leffler
2659ff3569beSJohn Baldwindevice		safe		# SafeNet 1141
2660ff3569beSJohn Baldwinoptions 	SAFE_DEBUG	# enable debugging support: hw.safe.debug
2661ff3569beSJohn Baldwinoptions 	SAFE_RNDTEST	# enable rndtest support
2662ff3569beSJohn Baldwin
26638b7ce2ffSSam Leffler#####################################################################
26648b7ce2ffSSam Leffler
26658b7ce2ffSSam Leffler
2666785d2100SJohn Birrell#
2667785d2100SJohn Birrell# Embedded system options:
2668785d2100SJohn Birrell#
2669785d2100SJohn Birrell# An embedded system might want to run something other than init.
26700fc9f11dSSergey Kandaurovoptions 	INIT_PATH=/sbin/init:/rescue/init
2671bc0e3a03SJeroen Ruigrok van der Werven
2672bc0e3a03SJeroen Ruigrok van der Werven# Debug options
2673bc0e3a03SJeroen Ruigrok van der Wervenoptions 	BUS_DEBUG	# enable newbus debugging
26741c9c6382SRuslan Ermilovoptions 	DEBUG_VFS_LOCKS	# enable VFS lock debugging
2675395bb186SSam Leffleroptions 	SOCKBUF_DEBUG	# enable sockbuf last record/mb tail checking
267641c1a233SGleb Smirnoffoptions 	IFMEDIA_DEBUG	# enable debugging in net/if_media.c
2677bc0e3a03SJeroen Ruigrok van der Werven
2678e2c1a4e9SBenno Rice#
2679e2c1a4e9SBenno Rice# Verbose SYSINIT
2680e2c1a4e9SBenno Rice#
2681e2c1a4e9SBenno Rice# Make the SYSINIT process performed by mi_startup() verbose.  This is very
2682e2c1a4e9SBenno Rice# useful when porting to a new architecture.  If DDB is also enabled, this
2683199b9ab8SIan Lepore# will print function names instead of addresses.  If defined with a value
2684199b9ab8SIan Lepore# of zero, the verbose code is compiled-in but disabled by default, and can
2685199b9ab8SIan Lepore# be enabled with the debug.verbose_sysinit=1 tunable.
2686e2c1a4e9SBenno Riceoptions 	VERBOSE_SYSINIT
2687e2c1a4e9SBenno Rice
2688446af86dSJohn Baldwin#####################################################################
2689446af86dSJohn Baldwin# SYSV IPC KERNEL PARAMETERS
2690446af86dSJohn Baldwin#
2691446af86dSJohn Baldwin# Maximum number of System V semaphores that can be used on the system at
2692446af86dSJohn Baldwin# one time.
2693446af86dSJohn Baldwinoptions 	SEMMNI=11
2694446af86dSJohn Baldwin
2695446af86dSJohn Baldwin# Total number of semaphores system wide
2696446af86dSJohn Baldwinoptions 	SEMMNS=61
2697446af86dSJohn Baldwin
2698446af86dSJohn Baldwin# Total number of undo structures in system
2699446af86dSJohn Baldwinoptions 	SEMMNU=31
2700446af86dSJohn Baldwin
2701446af86dSJohn Baldwin# Maximum number of System V semaphores that can be used by a single process
2702446af86dSJohn Baldwin# at one time.
2703446af86dSJohn Baldwinoptions 	SEMMSL=61
2704446af86dSJohn Baldwin
2705446af86dSJohn Baldwin# Maximum number of operations that can be outstanding on a single System V
2706446af86dSJohn Baldwin# semaphore at one time.
2707446af86dSJohn Baldwinoptions 	SEMOPM=101
2708446af86dSJohn Baldwin
2709446af86dSJohn Baldwin# Maximum number of undo operations that can be outstanding on a single
2710446af86dSJohn Baldwin# System V semaphore at one time.
2711446af86dSJohn Baldwinoptions 	SEMUME=11
2712446af86dSJohn Baldwin
2713446af86dSJohn Baldwin# Maximum number of shared memory pages system wide.
2714446af86dSJohn Baldwinoptions 	SHMALL=1025
2715446af86dSJohn Baldwin
2716446af86dSJohn Baldwin# Maximum size, in bytes, of a single System V shared memory region.
271725388b6cSBruce Evansoptions 	SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2718446af86dSJohn Baldwinoptions 	SHMMAXPGS=1025
2719446af86dSJohn Baldwin
2720446af86dSJohn Baldwin# Minimum size, in bytes, of a single System V shared memory region.
2721446af86dSJohn Baldwinoptions 	SHMMIN=2
2722446af86dSJohn Baldwin
2723446af86dSJohn Baldwin# Maximum number of shared memory regions that can be used on the system
2724446af86dSJohn Baldwin# at one time.
2725446af86dSJohn Baldwinoptions 	SHMMNI=33
2726446af86dSJohn Baldwin
2727446af86dSJohn Baldwin# Maximum number of System V shared memory regions that can be attached to
2728446af86dSJohn Baldwin# a single process at one time.
2729446af86dSJohn Baldwinoptions 	SHMSEG=9
2730446af86dSJohn Baldwin
2731d9282887SDima Dorfman# Set the amount of time (in seconds) the system will wait before
2732d9282887SDima Dorfman# rebooting automatically when a kernel panic occurs.  If set to (-1),
2733d9282887SDima Dorfman# the system will wait indefinitely until a key is pressed on the
2734d9282887SDima Dorfman# console.
2735d9282887SDima Dorfmanoptions 	PANIC_REBOOT_WAIT_TIME=16
2736d9282887SDima Dorfman
27375bbb8060STor Egge# Attempt to bypass the buffer cache and put data directly into the
27385bbb8060STor Egge# userland buffer for read operation when O_DIRECT flag is set on the
27395bbb8060STor Egge# file.  Both offset and length of the read operation must be
27405bbb8060STor Egge# multiples of the physical media sector size.
27415bbb8060STor Egge#
2742995356dcSDag-Erling Smørgravoptions 	DIRECTIO
27435bbb8060STor Egge
27445bbb8060STor Egge# Specify a lower limit for the number of swap I/O buffers.  They are
27455bbb8060STor Egge# (among other things) used when bypassing the buffer cache due to
27465bbb8060STor Egge# DIRECTIO kernel option enabled and O_DIRECT flag set on file.
27475bbb8060STor Egge#
2748995356dcSDag-Erling Smørgravoptions 	NSWBUF_MIN=120
27495bbb8060STor Egge
2750446af86dSJohn Baldwin#####################################################################
2751446af86dSJohn Baldwin
2752bc0e3a03SJeroen Ruigrok van der Werven# More undocumented options for linting.
27539c0ef6d5SOliver Fromme# Note that documenting these is not considered an affront.
2754bc0e3a03SJeroen Ruigrok van der Werven
2755bc0e3a03SJeroen Ruigrok van der Wervenoptions 	CAM_DEBUG_DELAY
275628d7984fSJeroen Ruigrok van der Werven
2757bc0e3a03SJeroen Ruigrok van der Wervenoptions 	DEBUG
27588b6f5e65SJeroen Ruigrok van der Werven
275928d7984fSJeroen Ruigrok van der Werven# Kernel filelock debugging.
2760bc0e3a03SJeroen Ruigrok van der Wervenoptions 	LOCKF_DEBUG
276128d7984fSJeroen Ruigrok van der Werven
27628b6f5e65SJeroen Ruigrok van der Werven# System V compatible message queues
27638b6f5e65SJeroen Ruigrok van der Werven# Please note that the values provided here are used to test kernel
27648b6f5e65SJeroen Ruigrok van der Werven# building.  The defaults in the sources provide almost the same numbers.
27658b6f5e65SJeroen Ruigrok van der Werven# MSGSSZ must be a power of 2 between 8 and 1024.
27668b6f5e65SJeroen Ruigrok van der Wervenoptions 	MSGMNB=2049	# Max number of chars in queue
27678b6f5e65SJeroen Ruigrok van der Wervenoptions 	MSGMNI=41	# Max number of message queue identifiers
27688b6f5e65SJeroen Ruigrok van der Wervenoptions 	MSGSEG=2049	# Max number of message segments
27698b6f5e65SJeroen Ruigrok van der Wervenoptions 	MSGSSZ=16	# Size of a message segment
27708b6f5e65SJeroen Ruigrok van der Wervenoptions 	MSGTQL=41	# Max number of messages in system
27718b6f5e65SJeroen Ruigrok van der Werven
27728b6f5e65SJeroen Ruigrok van der Wervenoptions 	NBUF=512	# Number of buffer headers
27738b6f5e65SJeroen Ruigrok van der Werven
27748b6f5e65SJeroen Ruigrok van der Wervenoptions 	SC_DEBUG_LEVEL=5	# Syscons debug level
27758b6f5e65SJeroen Ruigrok van der Wervenoptions 	SC_RENDER_DEBUG	# syscons rendering debugging
27768b6f5e65SJeroen Ruigrok van der Werven
27778b6f5e65SJeroen Ruigrok van der Wervenoptions 	VFS_BIO_DEBUG	# VFS buffer I/O debugging
27788b6f5e65SJeroen Ruigrok van der Werven
2779316ec49aSScott Longoptions 	KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
2780b7627840SKonstantin Belousovoptions 	KSTACK_USAGE_PROF
2781316ec49aSScott Long
2782662d3818SScott Long# Adaptec Array Controller driver options
2783662d3818SScott Longoptions 	AAC_DEBUG	# Debugging levels:
2784662d3818SScott Long				# 0 - quiet, only emit warnings
2785662d3818SScott Long				# 1 - noisy, emit major function
2786662d3818SScott Long				#     points and things done
2787662d3818SScott Long				# 2 - extremely noisy, emit trace
2788662d3818SScott Long				#     items in loops, etc.
2789662d3818SScott Long
2790097055e2SEdward Tomasz Napierala# Resource Accounting
2791097055e2SEdward Tomasz Napieralaoptions 	RACCT
2792097055e2SEdward Tomasz Napierala
2793ec125fbbSEdward Tomasz Napierala# Resource Limits
2794ec125fbbSEdward Tomasz Napieralaoptions 	RCTL
2795ec125fbbSEdward Tomasz Napierala
27961e9ea774SBruce Evans# Yet more undocumented options for linting.
27971e9ea774SBruce Evansoptions 	MAXFILES=999
2798efba048eSXin LI
2799997b0a64SDag-Erling Smørgrav# Random number generator
2800a3c41f8bSConrad Meyer# Alternative algorithm.
2801a3c41f8bSConrad Meyer#options 	RANDOM_FENESTRASX
280219fa89e9SMark Murray# Allow the CSPRNG algorithm to be loaded as a module.
280319fa89e9SMark Murray#options 	RANDOM_LOADABLE
2804e866d8f0SMark Murray# Select this to allow high-rate but potentially expensive
2805e866d8f0SMark Murray# harvesting of Slab-Allocator entropy. In very high-rate
2806e866d8f0SMark Murray# situations the value of doing this is dubious at best.
2807e866d8f0SMark Murrayoptions 	RANDOM_ENABLE_UMA	# slab allocator
280881e3caafSJustin Hibbits
2809a6bc59f2SMatt Macy# Select this to allow high-rate but potentially expensive
2810a6bc59f2SMatt Macy# harvesting of of the m_next pointer in the mbuf. Note that
2811a6bc59f2SMatt Macy# the m_next pointer is NULL except when receiving > 4K
2812a6bc59f2SMatt Macy# jumbo frames or sustained bursts by way of LRO. Thus in
2813a6bc59f2SMatt Macy# the common case it is stirring zero in to the entropy
2814a6bc59f2SMatt Macy# pool. In cases where it is not NULL it is pointing to one
2815a6bc59f2SMatt Macy# of a small (in the thousands to 10s of thousands) number
2816a6bc59f2SMatt Macy# of 256 byte aligned mbufs. Hence it is, even in the best
2817a6bc59f2SMatt Macy# case, a poor source of entropy. And in the absence of actual
2818a6bc59f2SMatt Macy# runtime analysis of entropy collection may mislead the user in
2819a6bc59f2SMatt Macy# to believe that substantially more entropy is being collected
2820a6bc59f2SMatt Macy# than in fact is - leading to a different class of security
2821a6bc59f2SMatt Macy# risk. In high packet rate situations ethernet entropy
2822a6bc59f2SMatt Macy# collection is also very expensive, possibly leading to as
2823a6bc59f2SMatt Macy# much as a 50% drop in packets received.
2824a6bc59f2SMatt Macy# This option is present to maintain backwards compatibility
2825a6bc59f2SMatt Macy# if desired, however it cannot be recommended for use in any
2826a6bc59f2SMatt Macy# environment.
2827a6bc59f2SMatt Macyoptions 	RANDOM_ENABLE_ETHER	# ether_input
2828a6bc59f2SMatt Macy
282981e3caafSJustin Hibbits# Module to enable execution of application via emulators like QEMU
2830eb6f4885SDoug Rabsonoptions         IMGACT_BINMISC
2831aa14e9b7SMark Johnston
2832aa14e9b7SMark Johnston# zlib I/O stream support
2833aa14e9b7SMark Johnston# This enables support for compressed core dumps.
2834aa14e9b7SMark Johnstonoptions 	GZIO
2835fb403678SAdrian Chadd
2836eefd8f96SConrad Meyer# zstd support
2837fb702b44SMatt Macy# This enables support for Zstd compressed core dumps, GEOM_UZIP images,
2838fb702b44SMatt Macy# and is required by zfs if statically linked.
28396026dcd7SMark Johnstonoptions 	ZSTDIO
28406026dcd7SMark Johnston
2841fb403678SAdrian Chadd# BHND(4) drivers
2842fb403678SAdrian Chaddoptions 	BHND_LOGLEVEL	# Logging threshold level
28432b3f6d66SOleksandr Tymoshenko
28442b3f6d66SOleksandr Tymoshenko# evdev interface
2845a6b15a34SOleksandr Tymoshenkodevice		evdev		# input event device support
2846a6b15a34SOleksandr Tymoshenkooptions 	EVDEV_SUPPORT	# evdev support in legacy drivers
2847a6b15a34SOleksandr Tymoshenkooptions 	EVDEV_DEBUG	# enable event debug msgs
2848a6b15a34SOleksandr Tymoshenkodevice		uinput		# install /dev/uinput cdev
2849a6b15a34SOleksandr Tymoshenkooptions 	UINPUT_DEBUG	# enable uinput debug msgs
2850480f31c2SKonrad Witaszczyk
2851480f31c2SKonrad Witaszczyk# Encrypted kernel crash dumps.
2852480f31c2SKonrad Witaszczykoptions 	EKCD
28531fcf4de0SIan Lepore
28542d7e9271SIan Lepore# Serial Peripheral Interface (SPI) support.
28552d7e9271SIan Leporedevice		spibus		# Bus support.
28562d7e9271SIan Leporedevice		at45d		# DataFlash driver
28572d7e9271SIan Leporedevice		cqspi		#
28582d7e9271SIan Leporedevice		mx25l		# SPIFlash driver
28592d7e9271SIan Leporedevice		n25q		#
28602d7e9271SIan Leporedevice		spigen		# Generic access to SPI devices from userland.
28611fcf4de0SIan Lepore# Enable legacy /dev/spigenN name aliases for /dev/spigenX.Y devices.
28621fcf4de0SIan Leporeoptions 	SPIGEN_LEGACY_CDEVNAME # legacy device names for spigen
2863e8643b01SKonstantin Belousov
28640ed1d6fbSXin LI# Compression supports.
28650ed1d6fbSXin LIdevice		zlib		# gzip/zlib compression/decompression library
2866e8643b01SKonstantin Belousovdevice		xz		# xz_embedded LZMA de-compression library
28672ae3f52cSEdward Tomasz Napierala
28682ae3f52cSEdward Tomasz Napierala# Kernel support for stats(3).
28692ae3f52cSEdward Tomasz Napieralaoptions 	STATS
2870