3 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
5 # Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
6 # 'makeoptions', 'hints', etc. go into the kernel configuration that you
9 # Lines that begin with 'hint.' are NOT for config(8), they go into your
10 # hints file. See /boot/device.hints and/or the 'hints' config(8) directive.
12 # Please use ``make LINT'' to create an old-style LINT file if you want to
13 # do kernel test-builds.
15 # This file contains machine independent kernel configuration notes. For
16 # machine dependent notes, look in /sys/<arch>/conf/NOTES.
20 # NOTES conventions and style guide:
22 # Large block comments should begin and end with a line containing only a
25 # To describe a particular object, a block comment (if it exists) should
26 # come first. Next should come device, options, and hints lines in that
27 # order. All device and option lines must be described by a comment that
28 # doesn't just expand the device or option name. Use only a concise
29 # comment on the same line if possible. Very detailed descriptions of
30 # devices and subsystems belong in man pages.
32 # A space followed by a tab separates 'options' from an option name. Two
33 # spaces followed by a tab separate 'device' from a device name. Comments
34 # after an option or device should use one space after the comment character.
35 # To comment out a negative option that disables code and thus should not be
36 # enabled for LINT builds, precede 'options' with "#!".
40 # This is the ``identification'' of the kernel. Usually this should
41 # be the same as the name of your kernel.
46 # The `maxusers' parameter controls the static sizing of a number of
47 # internal system tables by a formula defined in subr_param.c.
48 # Omitting this parameter or setting it to 0 will cause the system to
49 # auto-size based on physical memory.
53 # To statically compile in device wiring instead of /boot/device.hints
54 #hints "LINT.hints" # Default places to look for devices.
56 # Use the following to compile in values accessible to the kernel
57 # through getenv() (or kenv(1) in userland). The format of the file
58 # is 'variable=value', see kenv(1)
63 # The `makeoptions' parameter allows variables to be passed to the
64 # generated Makefile in the build area.
66 # CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
67 # after most other flags. Here we use it to inhibit use of non-optimal
68 # gcc built-in functions (e.g., memcmp).
70 # DEBUG happens to be magic.
71 # The following is equivalent to 'config -g KERNELNAME' and creates
72 # 'kernel.debug' compiled with -g debugging as well as a normal
73 # 'kernel'. Use 'make install.debug' to install the debug kernel
74 # but that isn't normally necessary as the debug symbols are not loaded
75 # by the kernel and are not useful there anyway.
77 # KERNEL can be overridden so that you can change the default name of your
80 # MODULES_OVERRIDE can be used to limit modules built to a specific list.
82 makeoptions CONF_CFLAGS=-fno-builtin #Don't allow use of memcmp, etc.
83 #makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
84 #makeoptions KERNEL=foo #Build kernel "foo" and install "/foo"
85 # Only build ext2fs module plus those parts of the sound system I need.
86 #makeoptions MODULES_OVERRIDE="ext2fs sound/sound sound/driver/maestro3"
87 makeoptions DESTDIR=/tmp
90 # FreeBSD processes are subject to certain limits to their consumption
91 # of system resources. See getrlimit(2) for more details. Each
92 # resource limit has two values, a "soft" limit and a "hard" limit.
93 # The soft limits can be modified during normal system operation, but
94 # the hard limits are set at boot time. Their default values are
95 # in sys/<arch>/include/vmparam.h. There are two ways to change them:
97 # 1. Set the values at kernel build time. The options below are one
98 # way to allow that limit to grow to 1GB. They can be increased
99 # further by changing the parameters:
101 # 2. In /boot/loader.conf, set the tunables kern.maxswzone,
102 # kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
103 # kern.dflssiz, kern.maxssiz and kern.sgrowsiz.
105 # The options in /boot/loader.conf override anything in the kernel
106 # configuration file. See the function init_param1 in
107 # sys/kern/subr_param.c for more details.
110 options MAXDSIZ=(1024UL*1024*1024)
111 options MAXSSIZ=(128UL*1024*1024)
112 options DFLDSIZ=(1024UL*1024*1024)
115 # BLKDEV_IOSIZE sets the default block size used in user block
116 # device I/O. Note that this value will be overridden by the label
117 # when specifying a block device from a label with a non-0
118 # partition blocksize. The default is PAGE_SIZE.
120 options BLKDEV_IOSIZE=8192
123 # MAXPHYS and DFLTPHYS
125 # These are the maximal and safe 'raw' I/O block device access sizes.
126 # Reads and writes will be split into MAXPHYS chunks for known good
127 # devices and DFLTPHYS for the rest. Some applications have better
128 # performance with larger raw I/O access sizes. Note that certain VM
129 # parameters are derived from these values and making them too large
130 # can make an unbootable kernel.
132 # The defaults are 64K and 128K respectively.
133 options DFLTPHYS=(64*1024)
134 options MAXPHYS=(128*1024)
137 # This allows you to actually store this configuration file into
138 # the kernel binary itself. See config(8) for more details.
140 options INCLUDE_CONFIG_FILE # Include this file in kernel
143 # Compile-time defaults for various boot parameters
145 options BOOTVERBOSE=1
146 options BOOTHOWTO=RB_MULTIPLE
149 # Compile-time defaults for dmesg boot tagging
151 # Default boot tag; may use 'kern.boot_tag' loader tunable to override. The
152 # current boot's tag is also exposed via the 'kern.boot_tag' sysctl.
153 options BOOT_TAG=\"\"
154 # Maximum boot tag size the kernel's static buffer should accomodate. Maximum
155 # size for both BOOT_TAG and the assocated tunable.
156 options BOOT_TAG_SZ=32
158 options GEOM_BDE # Disk encryption.
159 options GEOM_BSD # BSD disklabels (obsolete, gone in 12)
160 options GEOM_CACHE # Disk cache.
161 options GEOM_CONCAT # Disk concatenation.
162 options GEOM_ELI # Disk encryption.
163 options GEOM_FOX # Redundant path mitigation (obsolete, gone in 12)
164 options GEOM_GATE # Userland services.
165 options GEOM_JOURNAL # Journaling.
166 options GEOM_LABEL # Providers labelization.
167 options GEOM_LINUX_LVM # Linux LVM2 volumes
168 options GEOM_MAP # Map based partitioning
169 options GEOM_MBR # DOS/MBR partitioning (obsolete, gone in 12)
170 options GEOM_MIRROR # Disk mirroring.
171 options GEOM_MULTIPATH # Disk multipath
172 options GEOM_NOP # Test class.
173 options GEOM_PART_APM # Apple partitioning
174 options GEOM_PART_BSD # BSD disklabel
175 options GEOM_PART_BSD64 # BSD disklabel64
176 options GEOM_PART_EBR # Extended Boot Records
177 options GEOM_PART_EBR_COMPAT # Backward compatible partition names
178 options GEOM_PART_GPT # GPT partitioning
179 options GEOM_PART_LDM # Logical Disk Manager
180 options GEOM_PART_MBR # MBR partitioning
181 options GEOM_PART_VTOC8 # SMI VTOC8 disk label
182 options GEOM_RAID # Soft RAID functionality.
183 options GEOM_RAID3 # RAID3 functionality.
184 options GEOM_SHSEC # Shared secret.
185 options GEOM_STRIPE # Disk striping.
186 options GEOM_SUNLABEL # Sun/Solaris partitioning (obsolete, gone in 12)
187 options GEOM_UZIP # Read-only compressed disks
188 options GEOM_VINUM # Vinum logical volume manager
189 options GEOM_VIRSTOR # Virtual storage.
190 options GEOM_VOL # Volume names from UFS superblock (obsolete, gone in 12)
191 options GEOM_ZERO # Performance testing helper.
194 # The root device and filesystem type can be compiled in;
195 # this provides a fallback option if the root device cannot
196 # be correctly guessed by the bootstrap code, or an override if
197 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
199 options ROOTDEVNAME=\"ufs:da0s2e\"
202 #####################################################################
205 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory. These options
206 # select which scheduler is compiled in.
208 # SCHED_4BSD is the historical, proven, BSD scheduler. It has a global run
209 # queue and no CPU affinity which makes it suboptimal for SMP. It has very
210 # good interactivity and priority selection.
212 # SCHED_ULE provides significant performance advantages over 4BSD on many
213 # workloads on SMP machines. It supports cpu-affinity, per-cpu runqueues
214 # and scheduler locks. It also has a stronger notion of interactivity
215 # which leads to better responsiveness even on uniprocessor machines. This
216 # is the default scheduler.
218 # SCHED_STATS is a debugging option which keeps some stats in the sysctl
219 # tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
225 #####################################################################
228 # SMP enables building of a Symmetric MultiProcessor Kernel.
231 options SMP # Symmetric MultiProcessor Kernel
233 # EARLY_AP_STARTUP releases the Application Processors earlier in the
234 # kernel startup process (before devices are probed) rather than at the
235 # end. This is a temporary option for use during the transition from
236 # late to early AP startup.
237 options EARLY_AP_STARTUP
239 # MAXCPU defines the maximum number of CPUs that can boot in the system.
240 # A default value should be already present, for every architecture.
243 # NUMA enables use of Non-Uniform Memory Access policies in various kernel
247 # MAXMEMDOM defines the maximum number of memory domains that can boot in the
248 # system. A default value should already be defined by every architecture.
251 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
252 # if the thread that currently owns the mutex is executing on another
253 # CPU. This behavior is enabled by default, so this option can be used
255 options NO_ADAPTIVE_MUTEXES
257 # ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
258 # if the thread that currently owns the rwlock is executing on another
259 # CPU. This behavior is enabled by default, so this option can be used
261 options NO_ADAPTIVE_RWLOCKS
263 # ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
264 # currently owns the sx lock is executing on another CPU.
265 # This behavior is enabled by default, so this option can be used to
267 options NO_ADAPTIVE_SX
269 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
270 # operation rather than inlining the simple cases. This can be used to
271 # shrink the size of the kernel text segment. Note that this behavior is
272 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
273 # and WITNESS options.
274 options MUTEX_NOINLINE
276 # RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
277 # operation rather than inlining the simple cases. This can be used to
278 # shrink the size of the kernel text segment. Note that this behavior is
279 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
280 # and WITNESS options.
281 options RWLOCK_NOINLINE
283 # SX_NOINLINE forces sx lock operations to call functions to perform each
284 # operation rather than inlining the simple cases. This can be used to
285 # shrink the size of the kernel text segment. Note that this behavior is
286 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
287 # and WITNESS options.
290 # SMP Debugging Options:
292 # CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
293 # structure used as backend in callout(9).
294 # PREEMPTION allows the threads that are in the kernel to be preempted by
295 # higher priority [interrupt] threads. It helps with interactivity
296 # and allows interrupt threads to run sooner rather than waiting.
297 # WARNING! Only tested on amd64 and i386.
298 # FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
299 # threads. Its sole use is to expose race conditions and other
300 # bugs during development. Enabling this option will reduce
301 # performance and increase the frequency of kernel panics by
302 # design. If you aren't sure that you need it then you don't.
303 # Relies on the PREEMPTION option. DON'T TURN THIS ON.
304 # SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
305 # used to hold active sleep queues as well as sleep wait message
307 # TURNSTILE_PROFILING enables rudimentary profiling of the hash table
308 # used to hold active lock queues.
309 # UMTX_PROFILING enables rudimentary profiling of the hash table used
310 # to hold active lock queues.
311 # WITNESS enables the witness code which detects deadlocks and cycles
312 # during locking operations.
313 # WITNESS_KDB causes the witness code to drop into the kernel debugger if
314 # a lock hierarchy violation occurs or if locks are held when going to
316 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
318 options FULL_PREEMPTION
321 options WITNESS_SKIPSPIN
323 # LOCK_PROFILING - Profiling locks. See LOCK_PROFILING(9) for details.
324 options LOCK_PROFILING
325 # Set the number of buffers and the hash size. The hash size MUST be larger
326 # than the number of buffers. Hash size should be prime.
327 options MPROF_BUFFERS="1536"
328 options MPROF_HASH_SIZE="1543"
330 # Profiling for the callout(9) backend.
331 options CALLOUT_PROFILING
333 # Profiling for internal hash tables.
334 options SLEEPQUEUE_PROFILING
335 options TURNSTILE_PROFILING
336 options UMTX_PROFILING
339 #####################################################################
340 # COMPATIBILITY OPTIONS
343 # Implement system calls compatible with 4.3BSD and older versions of
344 # FreeBSD. You probably do NOT want to remove this as much current code
345 # still relies on the 4.3 emulation. Note that some architectures that
346 # are supported by FreeBSD do not include support for certain important
347 # aspects of this compatibility option, namely those related to the
348 # signal delivery mechanism.
355 # Note that as a general rule, COMPAT_FREEBSD<n> depends on
356 # COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
358 # Enable FreeBSD4 compatibility syscalls
359 options COMPAT_FREEBSD4
361 # Enable FreeBSD5 compatibility syscalls
362 options COMPAT_FREEBSD5
364 # Enable FreeBSD6 compatibility syscalls
365 options COMPAT_FREEBSD6
367 # Enable FreeBSD7 compatibility syscalls
368 options COMPAT_FREEBSD7
370 # Enable FreeBSD9 compatibility syscalls
371 options COMPAT_FREEBSD9
373 # Enable FreeBSD10 compatibility syscalls
374 options COMPAT_FREEBSD10
376 # Enable FreeBSD11 compatibility syscalls
377 options COMPAT_FREEBSD11
379 # Enable FreeBSD12 compatibility syscalls
380 options COMPAT_FREEBSD12
382 # Enable Linux Kernel Programming Interface
383 options COMPAT_LINUXKPI
386 # These three options provide support for System V Interface
387 # Definition-style interprocess communication, in the form of shared
388 # memory, semaphores, and message queues, respectively.
395 #####################################################################
399 # Compile with kernel debugger related code.
404 # Print a stack trace of the current thread on the console for a panic.
409 # Don't enter the debugger for a panic. Intended for unattended operation
410 # where you may want to enter the debugger from the console, but still want
411 # the machine to recover from a panic.
413 options KDB_UNATTENDED
416 # Enable the ddb debugger backend.
421 # Print the numerical value of symbols in addition to the symbolic
427 # Enable the remote gdb debugger backend.
432 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
433 # contents of the registered sysctl nodes on the console. It is disabled by
434 # default because it generates excessively verbose console output that can
435 # interfere with serial console operation.
440 # Enable textdump by default, this disables kernel core dumps.
442 options TEXTDUMP_PREFERRED
445 # Enable extra debug messages while performing textdumps.
447 options TEXTDUMP_VERBOSE
450 # NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
452 options NO_SYSCTL_DESCR
455 # MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
456 # allocations that are smaller than a page. The purpose is to isolate
457 # different malloc types into hash classes, so that any buffer
458 # overruns or use-after-free will usually only affect memory from
459 # malloc types in that hash class. This is purely a debugging tool;
460 # by varying the hash function and tracking which hash class was
461 # corrupted, the intersection of the hash classes from each instance
462 # will point to a single malloc type that is being misused. At this
463 # point inspection or memguard(9) can be used to catch the offending
466 options MALLOC_DEBUG_MAXZONES=8
469 # DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
470 # for the kernel used to detect modify-after-free scenarios. See the
471 # memguard(9) man page for more information on usage.
473 options DEBUG_MEMGUARD
476 # DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
479 options DEBUG_REDZONE
482 # EARLY_PRINTF enables support for calling a special printf (eprintf)
483 # very early in the kernel (before cn_init() has been called). This
484 # should only be used for debugging purposes early in boot. Normally,
485 # it is not defined. It is commented out here because this feature
486 # isn't generally available. And the required eputc() isn't defined.
488 #options EARLY_PRINTF
491 # KTRACE enables the system-call tracing facility ktrace(2). To be more
492 # SMP-friendly, KTRACE uses a worker thread to process most trace events
493 # asynchronously to the thread generating the event. This requires a
494 # pre-allocated store of objects representing trace events. The
495 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
496 # The size of the pool can be adjusted both at boottime and runtime via
497 # the kern.ktrace_request_pool tunable and sysctl.
499 options KTRACE #kernel tracing
500 options KTRACE_REQUEST_POOL=101
503 # KTR is a kernel tracing facility imported from BSD/OS. It is
504 # enabled with the KTR option. KTR_ENTRIES defines the number of
505 # entries in the circular trace buffer; it may be an arbitrary number.
506 # KTR_BOOT_ENTRIES defines the number of entries during the early boot,
507 # before malloc(9) is functional.
508 # KTR_COMPILE defines the mask of events to compile into the kernel as
509 # defined by the KTR_* constants in <sys/ktr.h>. KTR_MASK defines the
510 # initial value of the ktr_mask variable which determines at runtime
511 # what events to trace. KTR_CPUMASK determines which CPU's log
512 # events, with bit X corresponding to CPU X. The layout of the string
513 # passed as KTR_CPUMASK must match a series of bitmasks each of them
514 # separated by the "," character (ie:
515 # KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF). KTR_VERBOSE enables
516 # dumping of KTR events to the console by default. This functionality
517 # can be toggled via the debug.ktr_verbose sysctl and defaults to off
518 # if KTR_VERBOSE is not defined. See ktr(4) and ktrdump(8) for details.
521 options KTR_BOOT_ENTRIES=1024
522 options KTR_ENTRIES=(128*1024)
523 options KTR_COMPILE=(KTR_ALL)
524 options KTR_MASK=KTR_INTR
525 options KTR_CPUMASK=0x3
529 # ALQ(9) is a facility for the asynchronous queuing of records from the kernel
530 # to a vnode, and is employed by services such as ktr(4) to produce trace
531 # files based on a kernel event stream. Records are written asynchronously
532 # in a worker thread.
538 # The INVARIANTS option is used in a number of source files to enable
539 # extra sanity checking of internal structures. This support is not
540 # enabled by default because of the extra time it would take to check
541 # for these conditions, which can only occur as a result of
542 # programming errors.
547 # The INVARIANT_SUPPORT option makes us compile in support for
548 # verifying some of the internal structures. It is a prerequisite for
549 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
550 # called. The intent is that you can set 'INVARIANTS' for single
551 # source files (by changing the source file or specifying it on the
552 # command line) if you have 'INVARIANT_SUPPORT' enabled. Also, if you
553 # wish to build a kernel module with 'INVARIANTS', then adding
554 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
555 # infrastructure without the added overhead.
557 options INVARIANT_SUPPORT
560 # The KASSERT_PANIC_OPTIONAL option allows kasserts to fire without
561 # necessarily inducing a panic. Panic is the default behavior, but
562 # runtime options can configure it either entirely off, or off with a
565 options KASSERT_PANIC_OPTIONAL
568 # The DIAGNOSTIC option is used to enable extra debugging information
569 # and invariants checking. The added checks are too expensive or noisy
570 # for an INVARIANTS kernel and thus are disabled by default. It is
571 # expected that a kernel configured with DIAGNOSTIC will also have the
572 # INVARIANTS option enabled.
577 # REGRESSION causes optional kernel interfaces necessary only for regression
578 # testing to be enabled. These interfaces may constitute security risks
579 # when enabled, as they permit processes to easily modify aspects of the
580 # run-time environment to reproduce unlikely or unusual (possibly normally
581 # impossible) scenarios.
586 # This option lets some drivers co-exist that can't co-exist in a running
587 # system. This is used to be able to compile all kernel code in one go for
588 # quality assurance purposes (like this file, which the option takes it name
591 options COMPILING_LINT
594 # STACK enables the stack(9) facility, allowing the capture of kernel stack
595 # for the purpose of procinfo(1), etc. stack(9) will also be compiled in
596 # automatically if DDB(4) is compiled into the kernel.
601 # The NUM_CORE_FILES option specifies the limit for the number of core
602 # files generated by a particular process, when the core file format
603 # specifier includes the %I pattern. Since we only have 1 character for
604 # the core count in the format string, meaning the range will be 0-9, the
605 # maximum value allowed for this option is 10.
606 # This core file limit can be adjusted at runtime via the debug.ncores
609 options NUM_CORE_FILES=5
612 # The TSLOG option enables timestamped logging of events, especially
613 # function entries/exits, in order to track the time spent by the kernel.
614 # In particular, this is useful when investigating the early boot process,
615 # before it is possible to use more sophisticated tools like DTrace.
616 # The TSLOGSIZE option controls the size of the (preallocated, fixed
617 # length) buffer used for storing these events (default: 262144 records).
619 # For security reasons the TSLOG option should not be enabled on systems
620 # used in production.
623 options TSLOGSIZE=262144
626 #####################################################################
627 # PERFORMANCE MONITORING OPTIONS
630 # The hwpmc driver that allows the use of in-CPU performance monitoring
631 # counters for performance monitoring. The base kernel needs to be configured
632 # with the 'options' line, while the hwpmc device can be either compiled
633 # in or loaded as a loadable kernel module.
635 # Additional configuration options may be required on specific architectures,
636 # please see hwpmc(4).
638 device hwpmc # Driver (also a loadable module)
640 options HWPMC_HOOKS # Other necessary kernel hooks
643 #####################################################################
649 options INET #Internet communications protocols
650 options INET6 #IPv6 communications protocols
652 options RATELIMIT # TX rate limiting support
654 options ROUTETABLES=2 # allocated fibs up to 65536. default is 1.
655 # but that would be a bad idea as they are large.
657 options TCP_OFFLOAD # TCP offload support.
658 options TCP_RFC7413 # TCP Fast Open
662 # In order to enable IPSEC you MUST also add device crypto to
663 # your kernel configuration
664 options IPSEC #IP security (requires device crypto)
666 # Option IPSEC_SUPPORT does not enable IPsec, but makes it possible to
667 # load it as a kernel module. You still MUST add device crypto to your kernel
669 options IPSEC_SUPPORT
670 #options IPSEC_DEBUG #debug for IP security
674 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
676 options NETSMB #SMB/CIFS requester
678 # mchain library. It can be either loaded as KLD or compiled into kernel
681 # libalias library, performing NAT
685 # SCTP is a NEW transport protocol defined by
686 # RFC2960 updated by RFC3309 and RFC3758.. and
687 # soon to have a new base RFC and many many more
688 # extensions. This release supports all the extensions
689 # including many drafts (most about to become RFC's).
690 # It is the reference implementation of SCTP
691 # and is quite well tested.
693 # Note YOU MUST have both INET and INET6 defined.
694 # You don't have to enable V6, but SCTP is
695 # dual stacked and so far we have not torn apart
696 # the V6 and V4.. since an association can span
697 # both a V6 and V4 address at the SAME time :-)
700 # There are bunches of options:
701 # this one turns on all sorts of
702 # nastily printing that you can
703 # do. It's all controlled by a
704 # bit mask (settable by socket opt and
705 # by sysctl). Including will not cause
706 # logging until you set the bits.. but it
707 # can be quite verbose.. so without this
708 # option we don't do any of the tests for
709 # bits and prints.. which makes the code run
710 # faster.. if you are not debugging don't use.
713 # All that options after that turn on specific types of
714 # logging. You can monitor CWND growth, flight size
715 # and all sorts of things. Go look at the code and
716 # see. I have used this to produce interesting
717 # charts and graphs as well :->
719 # I have not yet committed the tools to get and print
720 # the logs, I will do that eventually .. before then
721 # if you want them send me an email rrs@freebsd.org
722 # You basically must have ktr(4) enabled for these
723 # and you then set the sysctl to turn on/off various
724 # logging bits. Use ktrdump(8) to pull the log and run
725 # it through a display program.. and graphs and other
728 options SCTP_LOCK_LOGGING
729 options SCTP_MBUF_LOGGING
730 options SCTP_MBCNT_LOGGING
731 options SCTP_PACKET_LOGGING
732 options SCTP_LTRACE_CHUNKS
733 options SCTP_LTRACE_ERRORS
736 # altq(9). Enable the base part of the hooks with the ALTQ option.
737 # Individual disciplines must be built into the base system and can not be
738 # loaded as modules at this point. ALTQ requires a stable TSC so if yours is
739 # broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
742 options ALTQ_CBQ # Class Based Queueing
743 options ALTQ_RED # Random Early Detection
744 options ALTQ_RIO # RED In/Out
745 options ALTQ_CODEL # CoDel Active Queueing
746 options ALTQ_HFSC # Hierarchical Packet Scheduler
747 options ALTQ_FAIRQ # Fair Packet Scheduler
748 options ALTQ_CDNR # Traffic conditioner
749 options ALTQ_PRIQ # Priority Queueing
750 options ALTQ_NOPCC # Required if the TSC is unusable
753 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
754 # Individual node types can be enabled with the corresponding option
755 # listed below; however, this is not strictly necessary as netgraph
756 # will automatically load the corresponding KLD module if the node type
757 # is not already compiled into the kernel. Each type below has a
758 # corresponding man page, e.g., ng_async(8).
759 options NETGRAPH # netgraph(4) system
760 options NETGRAPH_DEBUG # enable extra debugging, this
761 # affects netgraph(4) and nodes
763 options NETGRAPH_ASYNC
764 options NETGRAPH_ATMLLC
765 options NETGRAPH_ATM_ATMPIF
766 options NETGRAPH_BLUETOOTH # ng_bluetooth(4)
767 options NETGRAPH_BLUETOOTH_BT3C # ng_bt3c(4)
768 options NETGRAPH_BLUETOOTH_HCI # ng_hci(4)
769 options NETGRAPH_BLUETOOTH_L2CAP # ng_l2cap(4)
770 options NETGRAPH_BLUETOOTH_SOCKET # ng_btsocket(4)
771 options NETGRAPH_BLUETOOTH_UBT # ng_ubt(4)
772 options NETGRAPH_BLUETOOTH_UBTBCMFW # ubtbcmfw(4)
774 options NETGRAPH_BRIDGE
776 options NETGRAPH_CHECKSUM
777 options NETGRAPH_CISCO
778 options NETGRAPH_DEFLATE
779 options NETGRAPH_DEVICE
780 options NETGRAPH_ECHO
781 options NETGRAPH_EIFACE
782 options NETGRAPH_ETHER
783 options NETGRAPH_FRAME_RELAY
785 options NETGRAPH_GIF_DEMUX
786 options NETGRAPH_HOLE
787 options NETGRAPH_IFACE
788 options NETGRAPH_IP_INPUT
789 options NETGRAPH_IPFW
790 options NETGRAPH_KSOCKET
791 options NETGRAPH_L2TP
793 options NETGRAPH_MPPC_COMPRESSION
794 options NETGRAPH_MPPC_ENCRYPTION
795 options NETGRAPH_NETFLOW
797 options NETGRAPH_ONE2MANY
798 options NETGRAPH_PATCH
799 options NETGRAPH_PIPE
801 options NETGRAPH_PPPOE
802 options NETGRAPH_PPTPGRE
803 options NETGRAPH_PRED1
804 options NETGRAPH_RFC1490
805 options NETGRAPH_SOCKET
806 options NETGRAPH_SPLIT
807 options NETGRAPH_SPPP
809 options NETGRAPH_TCPMSS
813 options NETGRAPH_VLAN
815 # NgATM - Netgraph ATM
817 options NGATM_ATMBASE
823 device mn # Munich32x/Falc54 Nx64kbit/sec cards.
825 # Network stack virtualization.
827 options VNET_DEBUG # debug for VIMAGE
830 # Network interfaces:
831 # The `loop' device is MANDATORY when networking is enabled.
834 # The `ether' device provides generic code to handle
835 # Ethernets; it is MANDATORY when an Ethernet device driver is
839 # The `vlan' device implements the VLAN tagging of Ethernet frames
840 # according to IEEE 802.1Q.
843 # The `vxlan' device implements the VXLAN encapsulation of Ethernet
844 # frames in UDP packets according to RFC7348.
847 # The `wlan' device provides generic code to support 802.11
848 # drivers, including host AP mode; it is MANDATORY for the wi,
849 # and ath drivers and will eventually be required by all 802.11 drivers.
851 options IEEE80211_DEBUG #enable debugging msgs
852 options IEEE80211_SUPPORT_MESH #enable 802.11s D3.0 support
853 options IEEE80211_SUPPORT_TDMA #enable TDMA support
855 # The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
856 # support for WEP, TKIP, and AES-CCMP crypto protocols optionally
857 # used with 802.11 devices that depend on the `wlan' module.
862 # The `wlan_xauth' device provides support for external (i.e. user-mode)
863 # authenticators for use with 802.11 drivers that use the `wlan'
864 # module and support 802.1x and/or WPA security protocols.
867 # The `wlan_acl' device provides a MAC-based access control mechanism
868 # for use with 802.11 drivers operating in ap mode and using the
870 # The 'wlan_amrr' device provides AMRR transmit rate control algorithm
874 # The `sppp' device serves a similar role for certain types
875 # of synchronous PPP links (like `cx', `ar').
878 # The `bpf' device enables the Berkeley Packet Filter. Be
879 # aware of the legal and administrative consequences of enabling this
880 # option. DHCP requires bpf.
883 # The `netmap' device implements memory-mapped access to network
884 # devices from userspace, enabling wire-speed packet capture and
885 # generation even at 10Gbit/s. Requires support in the device
886 # driver. Supported drivers are ixgbe, e1000, re.
889 # The `disc' device implements a minimal network interface,
890 # which throws away all packets sent and never receives any. It is
891 # included for testing and benchmarking purposes.
894 # The `epair' device implements a virtual back-to-back connected Ethernet
895 # like interface pair.
898 # The `edsc' device implements a minimal Ethernet interface,
899 # which discards all packets sent and receives none.
902 # The `tuntap' device implements (user-)ppp, nos-tun(8) and a pty-like virtual
906 # The `gif' device implements IPv6 over IP4 tunneling,
907 # IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
908 # IPv6 over IPv6 tunneling.
909 # The `gre' device implements GRE (Generic Routing Encapsulation) tunneling,
910 # as specified in the RFC 2784 and RFC 2890.
911 # The `me' device implements Minimal Encapsulation within IPv4 as
912 # specified in the RFC 2004.
913 # The XBONEHACK option allows the same pair of addresses to be configured on
914 # multiple gif interfaces.
920 # The `stf' device implements 6to4 encapsulation.
923 # The pf packet filter consists of three devices:
924 # The `pf' device provides /dev/pf and the firewall code itself.
925 # The `pflog' device provides the pflog0 interface which logs packets.
926 # The `pfsync' device provides the pfsync0 interface used for
927 # synchronization of firewall state tables (over the net).
935 # Common Address Redundancy Protocol. See carp(4) for more details.
941 # Link aggregation interface.
945 # Internet family options:
947 # MROUTING enables the kernel multicast packet forwarder, which works
948 # with mrouted and XORP.
950 # IPFIREWALL enables support for IP firewall construction, in
951 # conjunction with the `ipfw' program. IPFIREWALL_VERBOSE sends
952 # logged packets to the system logger. IPFIREWALL_VERBOSE_LIMIT
953 # limits the number of times a matching entry can be logged.
955 # WARNING: IPFIREWALL defaults to a policy of "deny ip from any to any"
956 # and if you do not add other rules during startup to allow access,
957 # YOU WILL LOCK YOURSELF OUT. It is suggested that you set firewall_type=open
958 # in /etc/rc.conf when first enabling this feature, then refining the
959 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
960 # feature works properly.
962 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
963 # allow everything. Use with care, if a cracker can crash your
964 # firewall machine, they can get to your protected machines. However,
965 # if you are using it as an as-needed filter for specific problems as
966 # they arise, then this may be for you. Changing the default to 'allow'
967 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
970 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''. It
971 # depends on IPFIREWALL if compiled into the kernel.
973 # IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
976 # IPFIREWALL_NAT64 adds support for in kernel NAT64 in ipfw.
978 # IPFIREWALL_NPTV6 adds support for in kernel NPTv6 in ipfw.
980 # IPFIREWALL_PMOD adds support for protocols modification module. Currently
981 # it supports only TCP MSS modification.
983 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
984 # packets without touching the TTL). This can be useful to hide firewalls
985 # from traceroute and similar tools.
987 # PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
989 # TCPDEBUG enables code which keeps traces of the TCP state machine
990 # for sockets with the SO_DEBUG option set, which can then be examined
991 # using the trpt(8) utility.
993 # TCPPCAP enables code which keeps the last n packets sent and received
996 # TCP_BLACKBOX enables enhanced TCP event logging.
998 # TCP_HHOOK enables the hhook(9) framework hooks for the TCP stack.
1000 # RADIX_MPATH provides support for equal-cost multi-path routing.
1002 options MROUTING # Multicast routing
1003 options IPFIREWALL #firewall
1004 options IPFIREWALL_VERBOSE #enable logging to syslogd(8)
1005 options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
1006 options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default
1007 options IPFIREWALL_NAT #ipfw kernel nat support
1008 options IPFIREWALL_NAT64 #ipfw kernel NAT64 support
1009 options IPFIREWALL_NPTV6 #ipfw kernel IPv6 NPT support
1010 options IPDIVERT #divert sockets
1011 options IPFILTER #ipfilter support
1012 options IPFILTER_LOG #ipfilter logging
1013 options IPFILTER_LOOKUP #ipfilter pools
1014 options IPFILTER_DEFAULT_BLOCK #block all packets by default
1015 options IPSTEALTH #support for stealth forwarding
1016 options PF_DEFAULT_TO_DROP #drop everything by default
1019 options TCP_BLACKBOX
1023 # The MBUF_STRESS_TEST option enables options which create
1024 # various random failures / extreme cases related to mbuf
1025 # functions. See mbuf(9) for a list of available test cases.
1026 # MBUF_PROFILING enables code to profile the mbuf chains
1027 # exiting the system (via participating interfaces) and
1028 # return a logarithmic histogram of monitored parameters
1029 # (e.g. packet size, wasted space, number of mbufs in chain).
1030 options MBUF_STRESS_TEST
1031 options MBUF_PROFILING
1033 # Statically link in accept filters
1034 options ACCEPT_FILTER_DATA
1035 options ACCEPT_FILTER_DNS
1036 options ACCEPT_FILTER_HTTP
1038 # TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
1039 # carried in TCP option 19. This option is commonly used to protect
1040 # TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
1041 # This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
1042 # This requires the use of 'device crypto' and either 'options IPSEC' or
1043 # 'options IPSEC_SUPPORT'.
1044 options TCP_SIGNATURE #include support for RFC 2385
1046 # DUMMYNET enables the "dummynet" bandwidth limiter. You need IPFIREWALL
1047 # as well. See dummynet(4) and ipfw(8) for more info. When you run
1048 # DUMMYNET it is advisable to also have at least "options HZ=1000" to achieve
1049 # a smooth scheduling of the traffic.
1052 # The NETDUMP option enables netdump(4) client support in the kernel.
1053 # This allows a panicking kernel to transmit a kernel dump to a remote host.
1056 #####################################################################
1057 # FILESYSTEM OPTIONS
1060 # Only the root filesystem needs to be statically compiled or preloaded
1061 # as module; everything else will be automatically loaded at mount
1062 # time. Some people still prefer to statically compile other
1063 # filesystems as well.
1065 # NB: The UNION filesystem was known to be buggy in the past. It is now
1066 # being actively maintained, although there are still some issues being
1070 # One of these is mandatory:
1071 options FFS #Fast filesystem
1072 options NFSCL #Network File System client
1074 # The rest are optional:
1075 options AUTOFS #Automounter filesystem
1076 options CD9660 #ISO 9660 filesystem
1077 options FDESCFS #File descriptor filesystem
1078 options FUSEFS #FUSEFS support module
1079 options MSDOSFS #MS DOS File System (FAT, FAT32)
1080 options NFSLOCKD #Network Lock Manager
1081 options NFSD #Network Filesystem Server
1082 options KGSSAPI #Kernel GSSAPI implementation
1084 options NULLFS #NULL filesystem
1085 options PROCFS #Process filesystem (requires PSEUDOFS)
1086 options PSEUDOFS #Pseudo-filesystem framework
1087 options PSEUDOFS_TRACE #Debugging support for PSEUDOFS
1088 options SMBFS #SMB/CIFS filesystem
1089 options TMPFS #Efficient memory filesystem
1090 options UDF #Universal Disk Format
1091 options UNIONFS #Union filesystem
1092 # The xFS_ROOT options REQUIRE the associated ``options xFS''
1093 options NFS_ROOT #NFS usable as root device
1095 # Soft updates is a technique for improving filesystem speed and
1096 # making abrupt shutdown less risky.
1100 # Extended attributes allow additional data to be associated with files,
1101 # and is used for ACLs, Capabilities, and MAC labels.
1102 # See src/sys/ufs/ufs/README.extattr for more information.
1104 options UFS_EXTATTR_AUTOSTART
1106 # Access Control List support for UFS filesystems. The current ACL
1107 # implementation requires extended attribute support, UFS_EXTATTR,
1108 # for the underlying filesystem.
1109 # See src/sys/ufs/ufs/README.acls for more information.
1112 # Directory hashing improves the speed of operations on very large
1113 # directories at the expense of some memory.
1116 # Gjournal-based UFS journaling support.
1117 options UFS_GJOURNAL
1119 # Make space in the kernel for a root filesystem on a md device.
1120 # Define to the number of kilobytes to reserve for the filesystem.
1121 # This is now optional.
1122 # If not defined, the root filesystem passed in as the MFS_IMAGE makeoption
1123 # will be automatically embedded in the kernel during linking. Its exact size
1124 # will be consumed within the kernel.
1125 # If defined, the old way of embedding the filesystem in the kernel will be
1126 # used. That is to say MD_ROOT_SIZE KB will be allocated in the kernel and
1127 # later, the filesystem image passed in as the MFS_IMAGE makeoption will be
1128 # dd'd into the reserved space if it fits.
1129 options MD_ROOT_SIZE=10
1131 # Make the md device a potential root device, either with preloaded
1132 # images of type mfs_root or md_root.
1135 # Write-protect the md root device so that it may not be mounted writeable.
1136 options MD_ROOT_READONLY
1138 # Allow to read MD image from external memory regions
1141 # Disk quotas are supported when this option is enabled.
1142 options QUOTA #enable disk quotas
1144 # If you are running a machine just as a fileserver for PC and MAC
1145 # users, using SAMBA, you may consider setting this option
1146 # and keeping all those users' directories on a filesystem that is
1147 # mounted with the suiddir option. This gives new files the same
1148 # ownership as the directory (similar to group). It's a security hole
1149 # if you let these users run programs, so confine it to file-servers
1150 # (but it'll save you lots of headaches in those cases). Root owned
1151 # directories are exempt and X bits are cleared. The suid bit must be
1152 # set on the directory as well; see chmod(1). PC owners can't see/set
1153 # ownerships so they keep getting their toes trodden on. This saves
1154 # you all the support calls as the filesystem it's used on will act as
1155 # they expect: "It's my dir so it must be my file".
1160 options NFS_MINATTRTIMO=3 # VREG attrib cache timeout in sec
1161 options NFS_MAXATTRTIMO=60
1162 options NFS_MINDIRATTRTIMO=30 # VDIR attrib cache timeout in sec
1163 options NFS_MAXDIRATTRTIMO=60
1164 options NFS_DEBUG # Enable NFS Debugging
1167 # Add support for the EXT2FS filesystem of Linux fame. Be a bit
1168 # careful with this - the ext2fs code has a tendency to lag behind
1169 # changes and not be exercised very much, so mounting read/write could
1170 # be dangerous (and even mounting read only could result in panics.)
1174 # The system memory devices; /dev/mem, /dev/kmem
1177 # The kernel symbol table device; /dev/ksyms
1180 # Optional character code conversion support with LIBICONV.
1181 # Each option requires their base file system and LIBICONV.
1182 options CD9660_ICONV
1183 options MSDOSFS_ICONV
1187 #####################################################################
1190 # Real time extensions added in the 1993 POSIX
1191 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1193 options _KPOSIX_PRIORITY_SCHEDULING
1194 # p1003_1b_semaphores are very experimental,
1195 # user should be ready to assist in debugging if problems arise.
1196 options P1003_1B_SEMAPHORES
1198 # POSIX message queue
1199 options P1003_1B_MQUEUE
1201 #####################################################################
1202 # SECURITY POLICY PARAMETERS
1204 # Support for BSM audit
1207 # Support for Mandatory Access Control (MAC):
1210 options MAC_BSDEXTENDED
1216 options MAC_PARTITION
1218 options MAC_SEEOTHERUIDS
1222 # Support for Capsicum
1223 options CAPABILITIES # fine-grained rights on file descriptors
1224 options CAPABILITY_MODE # sandboxes with no global namespace access
1227 #####################################################################
1230 # The granularity of operation is controlled by the kernel option HZ whose
1231 # default value (1000 on most architectures) means a granularity of 1ms
1232 # (1s/HZ). Historically, the default was 100, but finer granularity is
1233 # required for DUMMYNET and other systems on modern hardware. There are
1234 # reasonable arguments that HZ should, in fact, be 100 still; consider,
1235 # that reducing the granularity too much might cause excessive overhead in
1236 # clock interrupt processing, potentially causing ticks to be missed and thus
1237 # actually reducing the accuracy of operation.
1241 # Enable support for the kernel PLL to use an external PPS signal,
1242 # under supervision of [x]ntpd(8)
1243 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
1247 # Enable support for generic feed-forward clocks in the kernel.
1248 # The feed-forward clock support is an alternative to the feedback oriented
1249 # ntpd/system clock approach, and is to be used with a feed-forward
1250 # synchronization algorithm such as the RADclock:
1251 # More info here: http://www.synclab.org/radclock
1256 #####################################################################
1259 # SCSI DEVICE CONFIGURATION
1261 # The SCSI subsystem consists of the `base' SCSI code, a number of
1262 # high-level SCSI device `type' drivers, and the low-level host-adapter
1263 # device drivers. The host adapters are listed in the ISA and PCI
1264 # device configuration sections below.
1266 # It is possible to wire down your SCSI devices so that a given bus,
1267 # target, and LUN always come on line as the same device unit. In
1268 # earlier versions the unit numbers were assigned in the order that
1269 # the devices were probed on the SCSI bus. This means that if you
1270 # removed a disk drive, you may have had to rewrite your /etc/fstab
1271 # file, and also that you had to be careful when adding a new disk
1272 # as it may have been probed earlier and moved your device configuration
1273 # around. (See also option GEOM_VOL for a different solution to this
1276 # This old behavior is maintained as the default behavior. The unit
1277 # assignment begins with the first non-wired down unit for a device
1278 # type. For example, if you wire a disk as "da3" then the first
1279 # non-wired disk will be assigned da4.
1281 # The syntax for wiring down devices is:
1283 hint.scbus.0.at="ahc0"
1284 hint.scbus.1.at="ahc1"
1285 hint.scbus.1.bus="0"
1286 hint.scbus.3.at="ahc2"
1287 hint.scbus.3.bus="0"
1288 hint.scbus.2.at="ahc2"
1289 hint.scbus.2.bus="1"
1290 hint.da.0.at="scbus0"
1291 hint.da.0.target="0"
1293 hint.da.1.at="scbus3"
1294 hint.da.1.target="1"
1295 hint.da.2.at="scbus2"
1296 hint.da.2.target="3"
1297 hint.sa.1.at="scbus1"
1298 hint.sa.1.target="6"
1300 # "units" (SCSI logical unit number) that are not specified are
1301 # treated as if specified as LUN 0.
1303 # All SCSI devices allocate as many units as are required.
1305 # The ch driver drives SCSI Media Changer ("jukebox") devices.
1307 # The da driver drives SCSI Direct Access ("disk") and Optical Media
1310 # The sa driver drives SCSI Sequential Access ("tape") devices.
1312 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1314 # The ses driver drives SCSI Environment Services ("ses") and
1315 # SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1317 # The pt driver drives SCSI Processor devices.
1319 # The sg driver provides a passthrough API that is compatible with the
1320 # Linux SG driver. It will work in conjunction with the COMPAT_LINUX
1321 # option to run linux SG apps. It can also stand on its own and provide
1322 # source level API compatibility for porting apps to FreeBSD.
1324 # Target Mode support is provided here but also requires that a SIM
1325 # (SCSI Host Adapter Driver) provide support as well.
1327 # The targ driver provides target mode support as a Processor type device.
1328 # It exists to give the minimal context necessary to respond to Inquiry
1329 # commands. There is a sample user application that shows how the rest
1330 # of the command support might be done in /usr/share/examples/scsi_target.
1332 # The targbh driver provides target mode support and exists to respond
1333 # to incoming commands that do not otherwise have a logical unit assigned
1336 # The pass driver provides a passthrough API to access the CAM subsystem.
1338 device scbus #base SCSI code
1339 device ch #SCSI media changers
1340 device da #SCSI direct access devices (aka disks)
1341 device sa #SCSI tapes
1342 device cd #SCSI CD-ROMs
1343 device ses #Enclosure Services (SES and SAF-TE)
1344 device pt #SCSI processor
1345 device targ #SCSI Target Mode Code
1346 device targbh #SCSI Target Mode Blackhole Device
1347 device pass #CAM passthrough driver
1348 device sg #Linux SCSI passthrough
1349 device ctl #CAM Target Layer
1352 # debugging options:
1353 # CAMDEBUG Compile in all possible debugging.
1354 # CAM_DEBUG_COMPILE Debug levels to compile in.
1355 # CAM_DEBUG_FLAGS Debug levels to enable on boot.
1356 # CAM_DEBUG_BUS Limit debugging to the given bus.
1357 # CAM_DEBUG_TARGET Limit debugging to the given target.
1358 # CAM_DEBUG_LUN Limit debugging to the given lun.
1359 # CAM_DEBUG_DELAY Delay in us after printing each debug line.
1361 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1362 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1363 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
1364 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
1365 # queue after a bus reset, and the number of milliseconds to
1366 # freeze the device queue after a bus device reset. This
1367 # can be changed at boot and runtime with the
1368 # kern.cam.scsi_delay tunable/sysctl.
1370 options CAM_DEBUG_COMPILE=-1
1371 options CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
1372 options CAM_DEBUG_BUS=-1
1373 options CAM_DEBUG_TARGET=-1
1374 options CAM_DEBUG_LUN=-1
1375 options CAM_DEBUG_DELAY=1
1376 options CAM_MAX_HIGHPOWER=4
1377 options SCSI_NO_SENSE_STRINGS
1378 options SCSI_NO_OP_STRINGS
1379 options SCSI_DELAY=5000 # Be pessimistic about Joe SCSI device
1380 options CAM_IOSCHED_DYNAMIC
1381 options CAM_TEST_FAILURE
1383 # Options for the CAM CDROM driver:
1384 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1385 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1386 # enforced if there is I/O waiting for another LUN
1387 # The compiled in defaults for these variables are 2 and 10 seconds,
1390 # These can also be changed on the fly with the following sysctl variables:
1391 # kern.cam.cd.changer.min_busy_seconds
1392 # kern.cam.cd.changer.max_busy_seconds
1394 options CHANGER_MIN_BUSY_SECONDS=2
1395 options CHANGER_MAX_BUSY_SECONDS=10
1397 # Options for the CAM sequential access driver:
1398 # SA_IO_TIMEOUT: Timeout for read/write/wfm operations, in minutes
1399 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
1400 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
1401 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
1402 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
1403 options SA_IO_TIMEOUT=4
1404 options SA_SPACE_TIMEOUT=60
1405 options SA_REWIND_TIMEOUT=(2*60)
1406 options SA_ERASE_TIMEOUT=(4*60)
1407 options SA_1FM_AT_EOD
1409 # Optional timeout for the CAM processor target (pt) device
1410 # This is specified in seconds. The default is 60 seconds.
1411 options SCSI_PT_DEFAULT_TIMEOUT=60
1413 # Optional enable of doing SES passthrough on other devices (e.g., disks)
1415 # Normally disabled because a lot of newer SCSI disks report themselves
1416 # as having SES capabilities, but this can then clot up attempts to build
1417 # a topology with the SES device that's on the box these drives are in....
1418 options SES_ENABLE_PASSTHROUGH
1421 #####################################################################
1422 # MISCELLANEOUS DEVICES AND OPTIONS
1424 device pty #BSD-style compatibility pseudo ttys
1425 device nmdm #back-to-back tty devices
1426 device md #Memory/malloc disk
1427 device snp #Snoop device - to look at pty/vty/etc..
1428 device ccd #Concatenated disk driver
1429 device firmware #firmware(9) support
1431 # Kernel side iconv library
1434 # Size of the kernel message buffer. Should be N * pagesize.
1435 options MSGBUF_SIZE=40960
1438 #####################################################################
1439 # HARDWARE BUS CONFIGURATION
1442 # PCI bus & PCI options:
1445 options PCI_HP # PCI-Express native HotPlug
1446 options PCI_IOV # PCI SR-IOV support
1449 #####################################################################
1450 # HARDWARE DEVICE CONFIGURATION
1452 # For ISA the required hints are listed.
1453 # PCI, CardBus, SD/MMC and pccard are self identifying buses, so
1454 # no hints are needed.
1457 # Mandatory devices:
1460 # These options are valid for other keyboard drivers as well.
1461 options KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
1462 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
1464 device kbdmux # keyboard multiplexer
1465 options KBDMUX_DFLT_KEYMAP # specify the built-in keymap
1466 makeoptions KBDMUX_DFLT_KEYMAP=it.iso
1468 options FB_DEBUG # Frame buffer debugging
1470 device splash # Splash screen and screen saver support
1472 # Various screen savers.
1485 # The syscons console driver (SCO color console compatible).
1488 options MAXCONS=16 # number of virtual consoles
1489 options SC_ALT_MOUSE_IMAGE # simplified mouse cursor in text mode
1490 options SC_DFLT_FONT # compile font in
1491 makeoptions SC_DFLT_FONT=cp850
1492 options SC_DFLT_TERM=\"sc\" # default terminal emulator
1493 options SC_DISABLE_KDBKEY # disable `debug' key
1494 options SC_DISABLE_REBOOT # disable reboot key sequence
1495 options SC_HISTORY_SIZE=200 # number of history buffer lines
1496 options SC_MOUSE_CHAR=0x3 # char code for text mode mouse cursor
1497 options SC_PIXEL_MODE # add support for the raster text mode
1499 # The following options will let you change the default colors of syscons.
1500 options SC_NORM_ATTR=(FG_GREEN|BG_BLACK)
1501 options SC_NORM_REV_ATTR=(FG_YELLOW|BG_GREEN)
1502 options SC_KERNEL_CONS_ATTR=(FG_RED|BG_BLACK)
1503 options SC_KERNEL_CONS_ATTRS=\"\x0c\x0d\x0e\x0f\x02\x09\x0a\x0b\"
1504 options SC_KERNEL_CONS_REV_ATTR=(FG_BLACK|BG_RED)
1506 # The following options will let you change the default behavior of
1507 # cut-n-paste feature
1508 options SC_CUT_SPACES2TABS # convert leading spaces into tabs
1509 options SC_CUT_SEPCHARS=\"x09\" # set of characters that delimit words
1510 # (default is single space - \"x20\")
1512 # If you have a two button mouse, you may want to add the following option
1513 # to use the right button of the mouse to paste text.
1514 options SC_TWOBUTTON_MOUSE
1516 # You can selectively disable features in syscons.
1517 options SC_NO_CUTPASTE
1518 options SC_NO_FONT_LOADING
1519 options SC_NO_HISTORY
1520 options SC_NO_MODE_CHANGE
1521 options SC_NO_SYSMOUSE
1522 options SC_NO_SUSPEND_VTYSWITCH
1523 #!options SC_NO_TERM_DUMB
1524 #!options SC_NO_TERM_SC
1525 #!options SC_NO_TERM_SCTEKEN
1528 # 0x80 Put the video card in the VESA 800x600 dots, 16 color mode
1529 # 0x100 Probe for a keyboard device periodically if one is not present
1531 # Enable experimental features of the syscons terminal emulator (teken).
1532 options TEKEN_CONS25 # cons25-style terminal emulation
1533 options TEKEN_UTF8 # UTF-8 output handling
1535 # The vt video console driver.
1537 options VT_ALT_TO_ESC_HACK=1 # Prepend ESC sequence to ALT keys
1538 options VT_MAXWINDOWS=16 # Number of virtual consoles
1539 options VT_TWOBUTTON_MOUSE # Use right mouse button to paste
1541 # The following options set the default framebuffer size.
1542 options VT_FB_DEFAULT_HEIGHT=480
1543 options VT_FB_DEFAULT_WIDTH=640
1545 # The following options will let you change the default vt terminal colors.
1546 options TERMINAL_NORM_ATTR=(FG_GREEN|BG_BLACK)
1547 options TERMINAL_KERN_ATTR=(FG_LIGHTRED|BG_BLACK)
1554 # SCSI host adapters:
1556 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1557 # 19160x/29160x, aic7770/aic78xx
1558 # ahd: Adaptec 29320/39320 Controllers.
1559 # esp: Emulex ESP, NCR 53C9x and QLogic FAS families based controllers
1560 # including the AMD Am53C974 (found on devices such as the Tekram
1561 # DC-390(T)) and the Sun ESP and FAS families of controllers
1562 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1563 # ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1564 # ISP 12160 Ultra3 SCSI,
1565 # Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1566 # Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1567 # Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
1568 # ispfw: Firmware module for Qlogic host adapters
1569 # mpr: LSI-Logic MPT/Fusion Gen 3
1570 # mps: LSI-Logic MPT/Fusion Gen 2
1571 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
1572 # or FC9x9 Fibre Channel host adapters.
1573 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1574 # 53C810, 53C810A, 53C815, 53C825, 53C825A, 53C860, 53C875,
1575 # 53C876, 53C885, 53C895, 53C895A, 53C896, 53C897, 53C1510D,
1576 # 53C1010-33, 53C1010-66.
1577 # trm: Tekram DC395U/UW/F DC315U adapters.
1582 device iscsi_initiator
1584 hint.isp.0.disable="1"
1586 hint.isp.0.prefer_iomap="1"
1587 hint.isp.0.prefer_memmap="1"
1588 hint.isp.0.fwload_disable="1"
1589 hint.isp.0.ignore_nvram="1"
1590 hint.isp.0.fullduplex="1"
1591 hint.isp.0.topology="lport"
1592 hint.isp.0.topology="nport"
1593 hint.isp.0.topology="lport-only"
1594 hint.isp.0.topology="nport-only"
1595 # we can't get u_int64_t types, nor can we get strings if it's got
1596 # a leading 0x, hence this silly dodge.
1597 hint.isp.0.portwnn="w50000000aaaa0000"
1598 hint.isp.0.nodewnn="w50000000aaaa0001"
1600 device mpr # LSI-Logic MPT-Fusion 3
1601 device mps # LSI-Logic MPT-Fusion 2
1602 device mpt # LSI-Logic MPT-Fusion
1606 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1607 # controllers that have it configured only if this option is set. Unfortunately,
1608 # this doesn't work on some motherboards, which prevents it from being the
1610 options AHC_ALLOW_MEMIO
1612 # Dump the contents of the ahc controller configuration PROM.
1613 options AHC_DUMP_EEPROM
1615 # Bitmap of units to enable targetmode operations.
1616 options AHC_TMODE_ENABLE
1618 # Compile in Aic7xxx Debugging code.
1621 # Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1622 options AHC_DEBUG_OPTS
1624 # Print register bitfields in debug output. Adds ~128k to driver
1626 options AHC_REG_PRETTY_PRINT
1628 # Compile in aic79xx debugging code.
1631 # Aic79xx driver debugging options. Adds ~215k to driver. See ahd(4).
1632 options AHD_DEBUG_OPTS=0xFFFFFFFF
1634 # Print human-readable register definitions when debugging
1635 options AHD_REG_PRETTY_PRINT
1637 # Bitmap of units to enable targetmode operations.
1638 options AHD_TMODE_ENABLE
1640 # Options used in dev/iscsi (Software iSCSI stack)
1642 options ISCSI_INITIATOR_DEBUG=9
1644 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
1646 # ISP_TARGET_MODE - enable target mode operation
1648 options ISP_TARGET_MODE=1
1650 # ISP_DEFAULT_ROLES - default role
1654 # both=3 (not supported currently)
1656 # ISP_INTERNAL_TARGET (trivial internal disk target, for testing)
1658 options ISP_DEFAULT_ROLES=0
1660 #options SYM_SETUP_SCSI_DIFF #-HVD support for 825a, 875, 885
1661 # disabled:0 (default), enabled:1
1662 #options SYM_SETUP_PCI_PARITY #-PCI parity checking
1663 # disabled:0, enabled:1 (default)
1664 #options SYM_SETUP_MAX_LUN #-Number of LUNs supported
1665 # default:8, range:[1..64]
1668 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
1669 # These controllers have a SCSI-like interface, and require the
1670 # CAM infrastructure.
1675 # Intel Integrated RAID controllers.
1676 # This driver was developed and is maintained by Intel. Contacts
1677 # at Intel for this driver are
1678 # "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
1679 # "Leubner, Achim" <achim.leubner@intel.com>.
1684 # Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
1685 # firmware. These controllers have a SCSI-like interface, and require
1686 # the CAM infrastructure.
1691 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers. Only
1692 # one entry is needed; the code will find and configure all supported
1695 device ida # Compaq Smart RAID
1696 device mlx # Mylex DAC960
1697 device amr # AMI MegaRAID
1698 device amrp # SCSI Passthrough interface (optional, CAM req.)
1699 device mfi # LSI MegaRAID SAS
1700 device mfip # LSI MegaRAID SAS passthrough, requires CAM
1702 device mrsas # LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
1707 device twe # 3ware ATA RAID
1710 # Serial ATA host controllers:
1712 # ahci: Advanced Host Controller Interface (AHCI) compatible
1713 # mvs: Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
1714 # siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
1716 # These drivers are part of cam(4) subsystem. They supersede less featured
1717 # ata(4) subsystem drivers, supporting same hardware.
1724 # The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
1725 # PC Card devices. You only need one "device ata" for it to find all
1726 # PCI and PC Card ATA/ATAPI devices on modern machines.
1727 # Alternatively, individual bus and chipset drivers may be chosen by using
1728 # the 'atacore' driver then selecting the drivers on a per vendor basis.
1729 # For example to build a system which only supports a VIA chipset,
1730 # omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
1734 #device atacore # Core ATA functionality
1735 #device atapccard # CARDBUS support
1736 #device ataisa # ISA bus support
1737 #device atapci # PCI bus support; only generic chipset support
1740 #device ataacard # ACARD
1741 #device ataacerlabs # Acer Labs Inc. (ALI)
1742 #device ataamd # American Micro Devices (AMD)
1743 #device ataati # ATI
1744 #device atacenatek # Cenatek
1745 #device atacypress # Cypress
1746 #device atacyrix # Cyrix
1747 #device atahighpoint # HighPoint
1748 #device ataintel # Intel
1749 #device ataite # Integrated Technology Inc. (ITE)
1750 #device atajmicron # JMicron
1751 #device atamarvell # Marvell
1752 #device atamicron # Micron
1753 #device atanational # National
1754 #device atanetcell # NetCell
1755 #device atanvidia # nVidia
1756 #device atapromise # Promise
1757 #device ataserverworks # ServerWorks
1758 #device atasiliconimage # Silicon Image Inc. (SiI) (formerly CMD)
1759 #device atasis # Silicon Integrated Systems Corp.(SiS)
1760 #device atavia # VIA Technologies Inc.
1763 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1765 hint.ata.0.port="0x1f0"
1768 hint.ata.1.port="0x170"
1772 # Standard floppy disk controllers and floppy tapes, supports
1773 # the Y-E DATA External FDD (PC Card)
1777 hint.fdc.0.port="0x3F0"
1781 # FDC_DEBUG enables floppy debugging. Since the debug output is huge, you
1782 # gotta turn it actually on by setting the variable fd_debug with DDB,
1786 # Activate this line if you happen to have an Insight floppy tape.
1787 # Probing them proved to be dangerous for people with floppy disks only,
1788 # so it's "hidden" behind a flag:
1789 #hint.fdc.0.flags="1"
1791 # Specify floppy devices
1798 # uart: newbusified driver for serial interfaces. It consolidates the sio(4),
1799 # sab(4) and zs(4) drivers.
1803 # Options for uart(4)
1804 options UART_PPS_ON_CTS # Do time pulse capturing using CTS
1806 options UART_POLL_FREQ # Set polling rate, used when hw has
1807 # no interrupt support (50 Hz default).
1809 # The following hint should only be used for pure ISA devices. It is not
1810 # needed otherwise. Use of hints is strongly discouraged.
1811 hint.uart.0.at="isa"
1813 # The following 3 hints are used when the UART is a system device (i.e., a
1814 # console or debug port), but only on platforms that don't have any other
1815 # means to pass the information to the kernel. The unit number of the hint
1816 # is only used to bundle the hints together. There is no relation to the
1817 # unit number of the probed UART.
1818 hint.uart.0.port="0x3f8"
1819 hint.uart.0.flags="0x10"
1820 hint.uart.0.baud="115200"
1822 # `flags' for serial drivers that support consoles like sio(4) and uart(4):
1823 # 0x10 enable console support for this unit. Other console flags
1824 # (if applicable) are ignored unless this is set. Enabling
1825 # console support does not make the unit the preferred console.
1826 # Boot with -h or set boot_serial=YES in the loader. For sio(4)
1827 # specifically, the 0x20 flag can also be set (see above).
1828 # Currently, at most one unit can have console support; the
1829 # first one (in config file order) with this flag set is
1830 # preferred. Setting this flag for sio0 gives the old behavior.
1831 # 0x80 use this port for serial line gdb support in ddb. Also known
1835 # Options for serial drivers that support consoles:
1836 options BREAK_TO_DEBUGGER # A BREAK/DBG on the console goes to
1837 # ddb, if available.
1839 # Solaris implements a new BREAK which is initiated by a character
1840 # sequence CR ~ ^b which is similar to a familiar pattern used on
1841 # Sun servers by the Remote Console. There are FreeBSD extensions:
1842 # CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
1843 options ALT_BREAK_TO_DEBUGGER
1845 # Serial Communications Controller
1846 # Supports the Siemens SAB 82532 and Zilog Z8530 multi-channel
1847 # communications controllers.
1850 # PCI Universal Communications driver
1851 # Supports various multi port PCI I/O cards.
1855 # Network interfaces:
1857 # MII bus support is required for many PCI Ethernet NICs,
1858 # namely those which use MII-compliant transceivers or implement
1859 # transceiver control interfaces that operate like an MII. Adding
1860 # "device miibus" to the kernel config pulls in support for the generic
1861 # miibus API, the common support for for bit-bang'ing the MII and all
1862 # of the PHY drivers, including a generic one for PHYs that aren't
1863 # specifically handled by an individual driver. Support for specific
1864 # PHYs may be built by adding "device mii", "device mii_bitbang" if
1865 # needed by the NIC driver and then adding the appropriate PHY driver.
1866 device mii # Minimal MII support
1867 device mii_bitbang # Common module for bit-bang'ing the MII
1868 device miibus # MII support w/ bit-bang'ing and all PHYs
1870 device acphy # Altima Communications AC101
1871 device amphy # AMD AM79c873 / Davicom DM910{1,2}
1872 device atphy # Attansic/Atheros F1
1873 device axphy # Asix Semiconductor AX88x9x
1874 device bmtphy # Broadcom BCM5201/BCM5202 and 3Com 3c905C
1875 device bnxt # Broadcom NetXtreme-C/NetXtreme-E
1876 device brgphy # Broadcom BCM54xx/57xx 1000baseTX
1877 device ciphy # Cicada/Vitesse CS/VSC8xxx
1878 device e1000phy # Marvell 88E1000 1000/100/10-BT
1879 device gentbi # Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
1880 device icsphy # ICS ICS1889-1893
1881 device ip1000phy # IC Plus IP1000A/IP1001
1882 device jmphy # JMicron JMP211/JMP202
1883 device lxtphy # Level One LXT-970
1884 device mlphy # Micro Linear 6692
1885 device nsgphy # NatSemi DP8361/DP83865/DP83891
1886 device nsphy # NatSemi DP83840A
1887 device nsphyter # NatSemi DP83843/DP83815
1888 device pnaphy # HomePNA
1889 device qsphy # Quality Semiconductor QS6612
1890 device rdcphy # RDC Semiconductor R6040
1891 device rgephy # RealTek 8169S/8110S/8211B/8211C
1892 device rlphy # RealTek 8139
1893 device rlswitch # RealTek 8305
1894 device smcphy # SMSC LAN91C111
1895 device tdkphy # TDK 89Q2120
1896 device tlphy # Texas Instruments ThunderLAN
1897 device truephy # LSI TruePHY
1898 device xmphy # XaQti XMAC II
1900 # an: Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
1901 # PCI and ISA varieties.
1902 # ae: Support for gigabit ethernet adapters based on the Attansic/Atheros
1903 # L2 PCI-Express FastEthernet controllers.
1904 # age: Support for gigabit ethernet adapters based on the Attansic/Atheros
1905 # L1 PCI express gigabit ethernet controllers.
1906 # alc: Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
1907 # ale: Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
1908 # ath: Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
1909 # bce: Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
1911 # bfe: Broadcom BCM4401 Ethernet adapter.
1912 # bge: Support for gigabit ethernet adapters based on the Broadcom
1913 # BCM570x family of controllers, including the 3Com 3c996-T,
1914 # the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1915 # the embedded gigE NICs on Dell PowerEdge 2550 servers.
1916 # bnxt: Broadcom NetXtreme-C and NetXtreme-E PCIe 10/25/50G Ethernet adapters.
1917 # bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
1919 # bwi: Broadcom BCM430* and BCM431* family of wireless adapters.
1920 # bwn: Broadcom BCM43xx family of wireless adapters.
1921 # cas: Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
1922 # cxgb: Chelsio T3 based 1GbE/10GbE PCIe Ethernet adapters.
1923 # cxgbe:Chelsio T4, T5, and T6-based 1/10/25/40/100GbE PCIe Ethernet
1925 # cxgbev: Chelsio T4, T5, and T6-based PCIe Virtual Functions.
1926 # dc: Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1927 # and various workalikes including:
1928 # the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1929 # AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1930 # 82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1931 # and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1932 # replaces the old al, ax, dm, pn and mx drivers. List of brands:
1933 # Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1934 # SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1935 # LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1937 # em: Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1938 # fxp: Intel EtherExpress Pro/100B
1939 # (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
1940 # gem: Apple GMAC/Sun ERI/Sun GEM
1941 # hme: Sun HME (Happy Meal Ethernet)
1942 # jme: JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
1943 # le: AMD Am7900 LANCE and Am79C9xx PCnet
1944 # lge: Support for PCI gigabit ethernet adapters based on the Level 1
1945 # LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1946 # SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1947 # lio: Support for Cavium 23XX Ethernet adapters
1948 # malo: Marvell Libertas wireless NICs.
1949 # mwl: Marvell 88W8363 802.11n wireless NICs.
1950 # Requires the mwl firmware module
1951 # mwlfw: Marvell 88W8363 firmware
1952 # msk: Support for gigabit ethernet adapters based on the Marvell/SysKonnect
1953 # Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
1954 # 88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
1955 # 88E8055, 88E8056 and D-Link 560T/550SX.
1956 # mlxfw: Mellanox firmware update module.
1957 # mlx5: Mellanox ConnectX-4 and ConnectX-4 LX IB and Eth shared code module.
1958 # mlx5en:Mellanox ConnectX-4 and ConnectX-4 LX PCIe Ethernet adapters.
1959 # my: Myson Fast Ethernet (MTD80X, MTD89X)
1960 # nge: Support for PCI gigabit ethernet adapters based on the National
1961 # Semiconductor DP83820 and DP83821 chipset. This includes the
1962 # SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
1963 # GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
1964 # EP-320G-TX and the Netgear GA622T.
1965 # oce: Emulex 10 Gbit adapters (OneConnect Ethernet)
1966 # ral: Ralink Technology IEEE 802.11 wireless adapter
1967 # re: RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
1968 # rl: Support for PCI fast ethernet adapters based on the RealTek 8129/8139
1969 # chipset. Note that the RealTek driver defaults to using programmed
1970 # I/O to do register accesses because memory mapped mode seems to cause
1971 # severe lockups on SMP hardware. This driver also supports the
1972 # Accton EN1207D `Cheetah' adapter, which uses a chip called
1973 # the MPX 5030/5038, which is either a RealTek in disguise or a
1974 # RealTek workalike. Note that the D-Link DFE-530TX+ uses the RealTek
1975 # chipset and is supported by this driver, not the 'vr' driver.
1976 # rtwn: RealTek wireless adapters.
1977 # rtwnfw: RealTek wireless firmware.
1978 # sge: Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
1979 # sis: Support for NICs based on the Silicon Integrated Systems SiS 900,
1980 # SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
1981 # sk: Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
1982 # This includes the SK-9841 and SK-9842 single port cards (single mode
1983 # and multimode fiber) and the SK-9843 and SK-9844 dual port cards
1984 # (also single mode and multimode).
1985 # The driver will autodetect the number of ports on the card and
1986 # attach each one as a separate network interface.
1987 # ste: Sundance Technologies ST201 PCI fast ethernet controller, includes
1988 # the D-Link DFE-550TX.
1989 # stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
1990 # TC9021 family of controllers, including the Sundance ST2021/ST2023,
1991 # the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
1992 # ti: Support for PCI gigabit ethernet NICs based on the Alteon Networks
1993 # Tigon 1 and Tigon 2 chipsets. This includes the Alteon AceNIC, the
1994 # 3Com 3c985, the Netgear GA620 and various others. Note that you will
1995 # probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
1996 # vr: Support for various fast ethernet adapters based on the VIA
1997 # Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
1998 # including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
1999 # DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
2000 # vte: DM&P Vortex86 RDC R6040 Fast Ethernet
2001 # wi: Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
2002 # the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
2003 # bridge with a PCMCIA adapter plugged into it.
2004 # xl: Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
2005 # Etherlink XL cards and integrated controllers. This includes the
2006 # integrated 3c905B-TX chips in certain Dell Optiplex and Dell
2007 # Precision desktop machines and the integrated 3c905-TX chips
2008 # in Dell Latitude laptop docking stations.
2009 # Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
2011 # Order for ISA devices is important here
2016 # PCI Ethernet NICs that use the common MII bus controller code.
2017 device ae # Attansic/Atheros L2 FastEthernet
2018 device age # Attansic/Atheros L1 Gigabit Ethernet
2019 device alc # Atheros AR8131/AR8132 Ethernet
2020 device ale # Atheros AR8121/AR8113/AR8114 Ethernet
2021 device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet
2022 device bfe # Broadcom BCM440x 10/100 Ethernet
2023 device bge # Broadcom BCM570xx Gigabit Ethernet
2024 device cas # Sun Cassini/Cassini+ and NS DP83065 Saturn
2025 device dc # DEC/Intel 21143 and various workalikes
2026 device et # Agere ET1310 10/100/Gigabit Ethernet
2027 device fxp # Intel EtherExpress PRO/100B (82557, 82558)
2028 hint.fxp.0.prefer_iomap="0"
2029 device gem # Apple GMAC/Sun ERI/Sun GEM
2030 device hme # Sun HME (Happy Meal Ethernet)
2031 device jme # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
2032 device lge # Level 1 LXT1001 gigabit Ethernet
2033 device mlxfw # Mellanox firmware update module
2034 device mlx5 # Shared code module between IB and Ethernet
2035 device mlx5en # Mellanox ConnectX-4 and ConnectX-4 LX
2036 device msk # Marvell/SysKonnect Yukon II Gigabit Ethernet
2037 device my # Myson Fast Ethernet (MTD80X, MTD89X)
2038 device nge # NatSemi DP83820 gigabit Ethernet
2039 device re # RealTek 8139C+/8169/8169S/8110S
2040 device rl # RealTek 8129/8139
2041 device sge # Silicon Integrated Systems SiS190/191
2042 device sis # Silicon Integrated Systems SiS 900/SiS 7016
2043 device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
2044 device ste # Sundance ST201 (D-Link DFE-550TX)
2045 device stge # Sundance/Tamarack TC9021 gigabit Ethernet
2046 device vr # VIA Rhine, Rhine II
2047 device vte # DM&P Vortex86 RDC R6040 Fast Ethernet
2048 device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
2050 # PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
2052 device em # Intel Pro/1000 Gigabit Ethernet
2053 device ix # Intel Pro/10Gbe PCIE Ethernet
2054 device ixv # Intel Pro/10Gbe PCIE Ethernet VF
2056 # PCI Ethernet NICs.
2057 device cxgb # Chelsio T3 10 Gigabit Ethernet
2058 device cxgb_t3fw # Chelsio T3 10 Gigabit Ethernet firmware
2059 device cxgbe # Chelsio T4-T6 1/10/25/40/100 Gigabit Ethernet
2060 device cxgbev # Chelsio T4-T6 Virtual Functions
2061 device le # AMD Am7900 LANCE and Am79C9xx PCnet
2062 device mxge # Myricom Myri-10G 10GbE NIC
2063 device oce # Emulex 10 GbE (OneConnect Ethernet)
2064 device ti # Alteon Networks Tigon I/II gigabit Ethernet
2066 # PCI IEEE 802.11 Wireless NICs
2067 device ath # Atheros pci/cardbus NIC's
2068 device ath_hal # pci/cardbus chip support
2069 #device ath_ar5210 # AR5210 chips
2070 #device ath_ar5211 # AR5211 chips
2071 #device ath_ar5212 # AR5212 chips
2078 #device ath_ar5416 # AR5416 chips
2079 # All of the AR5212 parts have a problem when paired with the AR71xx
2080 # CPUS. These parts have a bug that triggers a fatal bus error on the AR71xx
2081 # only. Details of the exact nature of the bug are sketchy, but some can be
2082 # found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
2083 # 6. This option enables this workaround. There is a performance penalty
2084 # for this work around, but without it things don't work at all. The DMA
2085 # from the card usually bursts 128 bytes, but on the affected CPUs, only
2087 options AH_RXCFG_SDMAMW_4BYTES
2088 #device ath_ar9160 # AR9160 chips
2089 #device ath_ar9280 # AR9280 chips
2090 #device ath_ar9285 # AR9285 chips
2091 device ath_rate_sample # SampleRate tx rate control for ath
2092 device bwi # Broadcom BCM430* BCM431*
2093 device bwn # Broadcom BCM43xx
2094 device malo # Marvell Libertas wireless NICs.
2095 device mwl # Marvell 88W8363 802.11n wireless NICs.
2097 device ral # Ralink Technology RT2500 wireless NICs.
2098 device rtwn # Realtek wireless NICs
2101 # Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
2102 #options TI_SF_BUF_JUMBO
2103 # Turn on the header splitting option for the ti(4) driver firmware. This
2104 # only works for Tigon II chips, and has no effect for Tigon I chips.
2105 # This option requires the TI_SF_BUF_JUMBO option above.
2106 #options TI_JUMBO_HDRSPLIT
2108 # These two options allow manipulating the mbuf cluster size and mbuf size,
2109 # respectively. Be very careful with NIC driver modules when changing
2110 # these from their default values, because that can potentially cause a
2111 # mismatch between the mbuf size assumed by the kernel and the mbuf size
2112 # assumed by a module. The only driver that currently has the ability to
2113 # detect a mismatch is ti(4).
2114 options MCLSHIFT=12 # mbuf cluster shift in bits, 12 == 4KB
2115 options MSIZE=512 # mbuf size in bytes
2120 # sound: The generic sound driver.
2126 # snd_*: Device-specific drivers.
2128 # The flags of the device tell the device a bit more info about the
2129 # device that normally is obtained through the PnP interface.
2130 # bit 2..0 secondary DMA channel;
2131 # bit 4 set if the board uses two dma channels;
2132 # bit 15..8 board type, overrides autodetection; leave it
2133 # zero if don't know what to put in (and you don't,
2134 # since this is unsupported at the moment...).
2136 # snd_ad1816: Analog Devices AD1816 ISA PnP/non-PnP.
2137 # snd_als4000: Avance Logic ALS4000 PCI.
2138 # snd_atiixp: ATI IXP 200/300/400 PCI.
2139 # snd_audiocs: Crystal Semiconductor CS4231 SBus/EBus. Only
2141 # snd_cmi: CMedia CMI8338/CMI8738 PCI.
2142 # snd_cs4281: Crystal Semiconductor CS4281 PCI.
2143 # snd_csa: Crystal Semiconductor CS461x/428x PCI. (except
2145 # snd_ds1: Yamaha DS-1 PCI.
2146 # snd_emu10k1: Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
2147 # snd_emu10kx: Creative SoundBlaster Live! and Audigy
2148 # snd_envy24: VIA Envy24 and compatible, needs snd_spicds.
2149 # snd_envy24ht: VIA Envy24HT and compatible, needs snd_spicds.
2150 # snd_es137x: Ensoniq AudioPCI ES137x PCI.
2151 # snd_ess: Ensoniq ESS ISA PnP/non-PnP, to be used in
2152 # conjunction with snd_sbc.
2153 # snd_fm801: Forte Media FM801 PCI.
2154 # snd_gusc: Gravis UltraSound ISA PnP/non-PnP.
2155 # snd_hda: Intel High Definition Audio (Controller) and
2157 # snd_hdspe: RME HDSPe AIO and RayDAT.
2158 # snd_ich: Intel ICH AC'97 and some more audio controllers
2159 # embedded in a chipset, for example nVidia
2160 # nForce controllers.
2161 # snd_maestro: ESS Technology Maestro-1/2x PCI.
2162 # snd_maestro3: ESS Technology Maestro-3/Allegro PCI.
2163 # snd_mss: Microsoft Sound System ISA PnP/non-PnP.
2164 # snd_neomagic: Neomagic 256 AV/ZX PCI.
2165 # snd_sb16: Creative SoundBlaster16, to be used in
2166 # conjunction with snd_sbc.
2167 # snd_sb8: Creative SoundBlaster (pre-16), to be used in
2168 # conjunction with snd_sbc.
2169 # snd_sbc: Creative SoundBlaster ISA PnP/non-PnP.
2170 # Supports ESS and Avance ISA chips as well.
2171 # snd_solo: ESS Solo-1x PCI.
2172 # snd_spicds: SPI codec driver, needed by Envy24/Envy24HT drivers.
2173 # snd_t4dwave: Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
2175 # snd_uaudio: USB audio.
2176 # snd_via8233: VIA VT8233x PCI.
2177 # snd_via82c686: VIA VT82C686A PCI.
2178 # snd_vibes: S3 Sonicvibes PCI.
2211 device snd_via82c686
2214 # For non-PnP sound cards:
2218 hint.pcm.0.flags="0x0"
2220 hint.sbc.0.port="0x220"
2223 hint.sbc.0.flags="0x15"
2224 hint.gusc.0.at="isa"
2225 hint.gusc.0.port="0x220"
2228 hint.gusc.0.flags="0x13"
2231 # Following options are intended for debugging/testing purposes:
2233 # SND_DEBUG Enable extra debugging code that includes
2234 # sanity checking and possible increase of
2237 # SND_DIAGNOSTIC Similar in a spirit of INVARIANTS/DIAGNOSTIC,
2238 # zero tolerance against inconsistencies.
2240 # SND_FEEDER_MULTIFORMAT By default, only 16/32 bit feeders are compiled
2241 # in. This options enable most feeder converters
2242 # except for 8bit. WARNING: May bloat the kernel.
2244 # SND_FEEDER_FULL_MULTIFORMAT Ditto, but includes 8bit feeders as well.
2246 # SND_FEEDER_RATE_HP (feeder_rate) High precision 64bit arithmetic
2247 # as much as possible (the default trying to
2248 # avoid it). Possible slowdown.
2250 # SND_PCM_64 (Only applicable for i386/32bit arch)
2251 # Process 32bit samples through 64bit
2252 # integer/arithmetic. Slight increase of dynamic
2253 # range at a cost of possible slowdown.
2255 # SND_OLDSTEREO Only 2 channels are allowed, effectively
2256 # disabling multichannel processing.
2259 options SND_DIAGNOSTIC
2260 options SND_FEEDER_MULTIFORMAT
2261 options SND_FEEDER_FULL_MULTIFORMAT
2262 options SND_FEEDER_RATE_HP
2264 options SND_OLDSTEREO
2267 # Miscellaneous hardware:
2269 # bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
2270 # cmx: OmniKey CardMan 4040 pccard smartcard reader
2275 # The 'bktr' device is a PCI video capture device using the Brooktree
2276 # bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
2277 # TV card, e.g. Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
2278 # Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
2280 # options OVERRIDE_CARD=xxx
2281 # options OVERRIDE_TUNER=xxx
2282 # options OVERRIDE_MSP=1
2283 # options OVERRIDE_DBX=1
2284 # These options can be used to override the auto detection
2285 # The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
2286 # Using sysctl(8) run-time overrides on a per-card basis can be made
2288 # options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
2290 # options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
2291 # Specifies the default video capture mode.
2292 # This is required for Dual Crystal (28&35MHz) boards where PAL is used
2293 # to prevent hangs during initialization, e.g. VideoLogic Captivator PCI.
2295 # options BKTR_USE_PLL
2296 # This is required for PAL or SECAM boards with a 28MHz crystal and no 35MHz
2297 # crystal, e.g. some new Bt878 cards.
2299 # options BKTR_GPIO_ACCESS
2300 # This enables IOCTLs which give user level access to the GPIO port.
2302 # options BKTR_NO_MSP_RESET
2303 # Prevents the MSP34xx reset. Good if you initialize the MSP in another OS first
2305 # options BKTR_430_FX_MODE
2306 # Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
2308 # options BKTR_SIS_VIA_MODE
2309 # Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
2310 # needed for some old SiS and VIA chipset motherboards.
2311 # This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
2312 # motherboards and motherboards with bad or incomplete PCI 2.1 support.
2313 # As a rough guess, old = before 1998
2315 # options BKTR_NEW_MSP34XX_DRIVER
2316 # Use new, more complete initialization scheme for the msp34* soundchip.
2317 # Should fix stereo autodetection if the old driver does only output
2321 # options BKTR_USE_FREEBSD_SMBUS
2322 # Compile with FreeBSD SMBus implementation
2324 # Brooktree driver has been ported to the new I2C framework. Thus,
2325 # you'll need to have the following 3 lines in the kernel config.
2330 # The iic and smb devices are only needed if you want to control other
2331 # I2C slaves connected to the external connector of some cards.
2336 # PC Card/PCMCIA and Cardbus
2338 # cbb: pci/cardbus bridge implementing YENTA interface
2339 # pccard: pccard slots
2340 # cardbus: cardbus slots
2349 # mmcsd MMC/SD memory card
2350 # sdhci Generic PCI SD Host Controller
2359 # System Management Bus support is provided by the 'smbus' device.
2360 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
2361 # which is a child of the 'smbus' device.
2363 # Supported devices:
2364 # smb standard I/O through /dev/smb*
2366 # Supported SMB interfaces:
2367 # iicsmb I2C to SMB bridge with any iicbus interface
2368 # bktr brooktree848 I2C hardware interface
2369 # intpm Intel PIIX4 (82371AB, 82443MX) Power Management Unit
2370 # alpm Acer Aladdin-IV/V/Pro2 Power Management Unit
2371 # ichsmb Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
2372 # viapm VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2373 # amdpm AMD 756 Power Management Unit
2374 # amdsmb AMD 8111 SMBus 2.0 Controller
2375 # nfpm NVIDIA nForce Power Management Unit
2376 # nfsmb NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
2377 # ismt Intel SMBus 2.0 controller chips (on Atom S1200, C2000)
2379 device smbus # Bus support, required for smb below.
2393 # SMBus peripheral devices
2395 # jedec_dimm Asset and temperature reporting for DDR3 and DDR4 DIMMs
2401 # Philips i2c bus support is provided by the `iicbus' device.
2403 # Supported devices:
2404 # ic i2c network interface
2405 # iic i2c standard io
2406 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
2407 # iicoc simple polling driver for OpenCores I2C controller
2409 # Supported interfaces:
2410 # bktr brooktree848 I2C software interface
2413 # iicbb generic I2C bit-banging code (needed by lpbb, bktr)
2415 device iicbus # Bus support, required for ic/iic/iicsmb below.
2420 device iicsmb # smb over i2c bridge
2421 device iicoc # OpenCores I2C controller support
2423 # I2C peripheral devices
2425 device ad7418 # Analog Devices temp and voltage sensor
2426 device ads111x # Texas Instruments ADS101x and ADS111x ADCs
2427 device ds1307 # Dallas DS1307 RTC and compatible
2428 device ds13rtc # All Dallas/Maxim ds13xx chips
2429 device ds1672 # Dallas DS1672 RTC
2430 device ds3231 # Dallas DS3231 RTC + temperature
2431 device icee # AT24Cxxx and compatible EEPROMs
2432 device isl12xx # Intersil ISL12xx RTC
2433 device lm75 # LM75 compatible temperature sensor
2434 device nxprtc # NXP RTCs: PCA/PFC212x PCA/PCF85xx
2435 device rtc8583 # Epson RTC-8583
2436 device s35390a # Seiko Instruments S-35390A RTC
2437 device sy8106a # Silergy Corp. SY8106A buck regulator
2438 device syr827 # Silergy Corp. DC/DC regulator
2442 # Parallel port bus support is provided by the `ppbus' device.
2443 # Multiple devices may be attached to the parallel port, devices
2444 # are automatically probed and attached when found.
2446 # Supported devices:
2447 # vpo Iomega Zip Drive
2448 # Requires SCSI disk support ('scbus' and 'da'), best
2449 # performance is achieved with ports in EPP 1.9 mode.
2450 # lpt Parallel Printer
2451 # plip Parallel network interface
2452 # ppi General-purpose I/O ("Geek Port") + IEEE1284 I/O
2453 # pps Pulse per second Timing Interface
2454 # lpbb Philips official parallel port I2C bit-banging interface
2455 # pcfclock Parallel port clock driver.
2457 # Supported interfaces:
2458 # ppc ISA-bus parallel port interfaces.
2461 options PPC_PROBE_CHIPSET # Enable chipset specific detection
2462 # (see flags in ppc(4))
2463 options DEBUG_1284 # IEEE1284 signaling protocol debug
2464 options PERIPH_1284 # Makes your computer act as an IEEE1284
2465 # compliant peripheral
2466 options DONTPROBE_1284 # Avoid boot detection of PnP parallel devices
2467 options VP0_DEBUG # ZIP/ZIP+ debug
2468 options LPT_DEBUG # Printer driver debug
2469 options PPC_DEBUG # Parallel chipset level debug
2470 options PLIP_DEBUG # Parallel network IP interface debug
2471 options PCFCLOCK_VERBOSE # Verbose pcfclock driver
2472 options PCFCLOCK_MAX_RETRIES=5 # Maximum read tries (default 10)
2486 # General Purpose I/O pins
2487 device gpio # gpio interfaces and bus support
2488 device gpiobacklight # sysctl control of gpio-based backlight
2489 device gpioiic # i2c via gpio bitbang
2490 device gpiokeys # kbd(4) glue for gpio-based key input
2491 device gpioled # led(4) gpio glue
2492 device gpiopower # event handler for gpio-based powerdown
2493 device gpiopps # Pulse per second input from gpio pin
2494 device gpioregulator # extres/regulator glue for gpio pin
2495 device gpiospi # SPI via gpio bitbang
2496 device gpioths # 1-wire temp/humidity sensor on gpio pin
2498 # Pulse width modulation
2499 device pwmbus # pwm interface and bus support
2500 device pwmc # userland control access to pwm outputs
2503 # Etherswitch framework and drivers
2505 # etherswitch The etherswitch(4) framework
2506 # miiproxy Proxy device for miibus(4) functionality
2508 # Switch hardware support:
2509 # arswitch Atheros switches
2510 # ip17x IC+ 17x family switches
2511 # rtl8366r Realtek RTL8366 switches
2512 # ukswitch Multi-PHY switches
2521 # Kernel BOOTP support
2523 options BOOTP # Use BOOTP to obtain IP address/hostname
2524 # Requires NFSCL and NFS_ROOT
2525 options BOOTP_NFSROOT # NFS mount root filesystem using BOOTP info
2526 options BOOTP_NFSV3 # Use NFS v3 to NFS mount root
2527 options BOOTP_COMPAT # Workaround for broken bootp daemons.
2528 options BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2529 options BOOTP_BLOCKSIZE=8192 # Override NFS block size
2532 # Enable software watchdog routines, even if hardware watchdog is present.
2533 # By default, software watchdog timer is enabled only if no hardware watchdog
2539 # Add the software deadlock resolver thread.
2544 # Disable swapping of stack pages. This option removes all
2545 # code which actually performs swapping, so it's not possible to turn
2546 # it back on at run-time.
2548 # This is sometimes usable for systems which don't have any swap space
2549 # (see also sysctl "vm.disable_swapspace_pageouts")
2551 #options NO_SWAPPING
2553 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
2554 # for sendfile(2) that are used to map file VM pages, and normally
2555 # default to a quantity that is roughly 16*MAXUSERS+512. You would
2556 # typically want about 4 of these for each simultaneous file send.
2558 options NSFBUFS=1024
2561 # Enable extra debugging code for locks. This stores the filename and
2562 # line of whatever acquired the lock in the lock itself, and changes a
2563 # number of function calls to pass around the relevant data. This is
2564 # not at all useful unless you are debugging lock code. Note that
2565 # modules should be recompiled as this option modifies KBI.
2570 #####################################################################
2582 # General USB code (mandatory for USB)
2585 # USB Double Bulk Pipe devices
2589 # USB temperature meter
2593 # Human Interface Device (anything with buttons and dials)
2599 # USB mass storage driver (Requires scbus and da)
2601 # USB mass storage driver for device-side mode
2603 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
2612 # eGalax USB touch screen
2614 # Diamond Rio 500 MP3 player
2617 # USB serial support
2619 # USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
2621 # USB support for Technologies ARK3116 based serial adapters
2623 # USB support for Belkin F5U103 and compatible serial adapters
2625 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
2627 # USB support for some Windows CE based serial communication.
2629 # USB support for Prolific PL-2303 serial adapters
2631 # USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
2633 # USB Visor and Palm devices
2635 # USB serial support for DDI pocket's PHS
2638 # USB ethernet support
2640 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
2641 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2642 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2646 # ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2647 # LinkSys USB200M and various other adapters.
2649 # ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
2653 # Devices which communicate using Ethernet over USB, particularly
2654 # Communication Device Class (CDC) Ethernet specification. Supports
2655 # Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
2658 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
2659 # and Netmate II, and the Belkin F5U111.
2662 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2663 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2664 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
2665 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
2666 # and 2104USB, and the Corega USB-T.
2669 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
2670 # and the GREEN HOUSE GH-USB100B.
2673 # Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2676 # RealTek RTL8152/RTL8153 USB Ethernet driver
2679 # Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
2682 # HSxPA devices from Option N.V
2685 # Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
2688 # Ralink Technology RT2501USB/RT2601USB wireless driver
2690 # Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
2693 # Atheros AR5523 wireless driver
2696 # Conexant/Intersil PrismGT wireless driver
2699 # Ralink Technology RT2500USB wireless driver
2702 # RNDIS USB ethernet driver
2704 # Realtek RTL8187B/L wireless driver
2707 # ZyDas ZD1211/ZD1211B wireless driver
2710 # Sierra USB wireless driver
2714 # debugging options for the USB subsystem
2720 options UKBD_DFLT_KEYMAP # specify the built-in keymap
2721 makeoptions UKBD_DFLT_KEYMAP=jp.106
2723 # options for uplcom:
2724 options UPLCOM_INTR_INTERVAL=100 # interrupt pipe interval
2727 # options for uvscom:
2728 options UVSCOM_DEFAULT_OPKTSIZE=8 # default output packet size
2729 options UVSCOM_INTR_INTERVAL=100 # interrupt pipe interval
2732 #####################################################################
2735 device firewire # FireWire bus code
2736 device sbp # SCSI over Firewire (Requires scbus and da)
2737 device sbp_targ # SBP-2 Target mode (Requires scbus and targ)
2738 device fwe # Ethernet over FireWire (non-standard!)
2739 device fwip # IP over FireWire (RFC2734 and RFC3146)
2741 #####################################################################
2742 # dcons support (Dumb Console Device)
2744 device dcons # dumb console driver
2745 device dcons_crom # FireWire attachment
2746 options DCONS_BUF_SIZE=16384 # buffer size
2747 options DCONS_POLL_HZ=100 # polling rate
2748 options DCONS_FORCE_CONSOLE=0 # force to be the primary console
2749 options DCONS_FORCE_GDB=1 # force to be the gdb device
2751 #####################################################################
2754 # This is a port of the OpenBSD crypto framework. Include this when
2755 # configuring IPSEC and when you have a h/w crypto device to accelerate
2756 # user applications that link to OpenSSL.
2758 # Drivers are ports from OpenBSD with some simple enhancements that have
2759 # been fed back to OpenBSD.
2761 device crypto # core crypto support
2763 # Only install the cryptodev device if you are running tests, or know
2764 # specifically why you need it. In most cases, it is not needed and
2765 # will make things slower.
2766 device cryptodev # /dev/crypto for access to h/w
2768 device rndtest # FIPS 140-2 entropy tester
2770 device ccr # Chelsio T6
2772 device hifn # Hifn 7951, 7781, etc.
2773 options HIFN_DEBUG # enable debugging support: hw.hifn.debug
2774 options HIFN_RNDTEST # enable rndtest support
2776 device ubsec # Broadcom 5501, 5601, 58xx
2777 options UBSEC_DEBUG # enable debugging support: hw.ubsec.debug
2778 options UBSEC_RNDTEST # enable rndtest support
2780 #####################################################################
2784 # Embedded system options:
2786 # An embedded system might want to run something other than init.
2787 options INIT_PATH=/sbin/init:/rescue/init
2790 options BUS_DEBUG # enable newbus debugging
2791 options DEBUG_VFS_LOCKS # enable VFS lock debugging
2792 options SOCKBUF_DEBUG # enable sockbuf last record/mb tail checking
2793 options IFMEDIA_DEBUG # enable debugging in net/if_media.c
2798 # Make the SYSINIT process performed by mi_startup() verbose. This is very
2799 # useful when porting to a new architecture. If DDB is also enabled, this
2800 # will print function names instead of addresses. If defined with a value
2801 # of zero, the verbose code is compiled-in but disabled by default, and can
2802 # be enabled with the debug.verbose_sysinit=1 tunable.
2803 options VERBOSE_SYSINIT
2805 #####################################################################
2806 # SYSV IPC KERNEL PARAMETERS
2808 # Maximum number of System V semaphores that can be used on the system at
2812 # Total number of semaphores system wide
2815 # Total number of undo structures in system
2818 # Maximum number of System V semaphores that can be used by a single process
2822 # Maximum number of operations that can be outstanding on a single System V
2823 # semaphore at one time.
2826 # Maximum number of undo operations that can be outstanding on a single
2827 # System V semaphore at one time.
2830 # Maximum number of shared memory pages system wide.
2833 # Maximum size, in bytes, of a single System V shared memory region.
2834 options SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2835 options SHMMAXPGS=1025
2837 # Minimum size, in bytes, of a single System V shared memory region.
2840 # Maximum number of shared memory regions that can be used on the system
2844 # Maximum number of System V shared memory regions that can be attached to
2845 # a single process at one time.
2848 # Set the amount of time (in seconds) the system will wait before
2849 # rebooting automatically when a kernel panic occurs. If set to (-1),
2850 # the system will wait indefinitely until a key is pressed on the
2852 options PANIC_REBOOT_WAIT_TIME=16
2854 # Attempt to bypass the buffer cache and put data directly into the
2855 # userland buffer for read operation when O_DIRECT flag is set on the
2856 # file. Both offset and length of the read operation must be
2857 # multiples of the physical media sector size.
2861 # Specify a lower limit for the number of swap I/O buffers. They are
2862 # (among other things) used when bypassing the buffer cache due to
2863 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
2865 options NSWBUF_MIN=120
2867 #####################################################################
2869 # More undocumented options for linting.
2870 # Note that documenting these is not considered an affront.
2872 options CAM_DEBUG_DELAY
2874 # VFS cluster debugging.
2875 options CLUSTERDEBUG
2879 # Kernel filelock debugging.
2882 # System V compatible message queues
2883 # Please note that the values provided here are used to test kernel
2884 # building. The defaults in the sources provide almost the same numbers.
2885 # MSGSSZ must be a power of 2 between 8 and 1024.
2886 options MSGMNB=2049 # Max number of chars in queue
2887 options MSGMNI=41 # Max number of message queue identifiers
2888 options MSGSEG=2049 # Max number of message segments
2889 options MSGSSZ=16 # Size of a message segment
2890 options MSGTQL=41 # Max number of messages in system
2892 options NBUF=512 # Number of buffer headers
2894 options SC_DEBUG_LEVEL=5 # Syscons debug level
2895 options SC_RENDER_DEBUG # syscons rendering debugging
2897 options VFS_BIO_DEBUG # VFS buffer I/O debugging
2899 options KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
2900 options KSTACK_USAGE_PROF
2902 # Adaptec Array Controller driver options
2903 options AAC_DEBUG # Debugging levels:
2904 # 0 - quiet, only emit warnings
2905 # 1 - noisy, emit major function
2906 # points and things done
2907 # 2 - extremely noisy, emit trace
2908 # items in loops, etc.
2910 # Resource Accounting
2916 # Yet more undocumented options for linting.
2917 # BKTR_ALLOC_PAGES has no effect except to cause warnings, and
2918 # BROOKTREE_ALLOC_PAGES hasn't actually been superseded by it, since the
2919 # driver still mostly spells this option BROOKTREE_ALLOC_PAGES.
2920 ##options BKTR_ALLOC_PAGES=(217*4+1)
2921 options BROOKTREE_ALLOC_PAGES=(217*4+1)
2922 options MAXFILES=999
2924 # Random number generator
2925 # Allow the CSPRNG algorithm to be loaded as a module.
2926 #options RANDOM_LOADABLE
2927 # Select this to allow high-rate but potentially expensive
2928 # harvesting of Slab-Allocator entropy. In very high-rate
2929 # situations the value of doing this is dubious at best.
2930 options RANDOM_ENABLE_UMA # slab allocator
2932 # Select this to allow high-rate but potentially expensive
2933 # harvesting of of the m_next pointer in the mbuf. Note that
2934 # the m_next pointer is NULL except when receiving > 4K
2935 # jumbo frames or sustained bursts by way of LRO. Thus in
2936 # the common case it is stirring zero in to the entropy
2937 # pool. In cases where it is not NULL it is pointing to one
2938 # of a small (in the thousands to 10s of thousands) number
2939 # of 256 byte aligned mbufs. Hence it is, even in the best
2940 # case, a poor source of entropy. And in the absence of actual
2941 # runtime analysis of entropy collection may mislead the user in
2942 # to believe that substantially more entropy is being collected
2943 # than in fact is - leading to a different class of security
2944 # risk. In high packet rate situations ethernet entropy
2945 # collection is also very expensive, possibly leading to as
2946 # much as a 50% drop in packets received.
2947 # This option is present to maintain backwards compatibility
2948 # if desired, however it cannot be recommended for use in any
2950 options RANDOM_ENABLE_ETHER # ether_input
2952 # Module to enable execution of application via emulators like QEMU
2953 options IMAGACT_BINMISC
2955 # zlib I/O stream support
2956 # This enables support for compressed core dumps.
2959 # zstd I/O stream support
2960 # This enables support for Zstd compressed core dumps.
2964 options BHND_LOGLEVEL # Logging threshold level
2967 device evdev # input event device support
2968 options EVDEV_SUPPORT # evdev support in legacy drivers
2969 options EVDEV_DEBUG # enable event debug msgs
2970 device uinput # install /dev/uinput cdev
2971 options UINPUT_DEBUG # enable uinput debug msgs
2973 # Encrypted kernel crash dumps.
2976 # Serial Peripheral Interface (SPI) support.
2977 device spibus # Bus support.
2978 device at45d # DataFlash driver
2980 device mx25l # SPIFlash driver
2982 device spigen # Generic access to SPI devices from userland.
2983 # Enable legacy /dev/spigenN name aliases for /dev/spigenX.Y devices.
2984 options SPIGEN_LEGACY_CDEVNAME # legacy device names for spigen
2986 # Compression supports.
2987 device zlib # gzip/zlib compression/decompression library
2988 device xz # xz_embedded LZMA de-compression library