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_CACHE # Disk cache.
160 options GEOM_CONCAT # Disk concatenation.
161 options GEOM_ELI # Disk encryption.
162 options GEOM_GATE # Userland services.
163 options GEOM_JOURNAL # Journaling.
164 options GEOM_LABEL # Providers labelization.
165 options GEOM_LINUX_LVM # Linux LVM2 volumes
166 options GEOM_MAP # Map based partitioning
167 options GEOM_MIRROR # Disk mirroring.
168 options GEOM_MULTIPATH # Disk multipath
169 options GEOM_NOP # Test class.
170 options GEOM_PART_APM # Apple partitioning
171 options GEOM_PART_BSD # BSD disklabel
172 options GEOM_PART_BSD64 # BSD disklabel64
173 options GEOM_PART_EBR # Extended Boot Records
174 options GEOM_PART_EBR_COMPAT # Backward compatible partition names
175 options GEOM_PART_GPT # GPT partitioning
176 options GEOM_PART_LDM # Logical Disk Manager
177 options GEOM_PART_MBR # MBR partitioning
178 options GEOM_PART_VTOC8 # SMI VTOC8 disk label
179 options GEOM_RAID # Soft RAID functionality.
180 options GEOM_RAID3 # RAID3 functionality.
181 options GEOM_SHSEC # Shared secret.
182 options GEOM_STRIPE # Disk striping.
183 options GEOM_UZIP # Read-only compressed disks
184 options GEOM_VINUM # Vinum logical volume manager
185 options GEOM_VIRSTOR # Virtual storage.
186 options GEOM_ZERO # Performance testing helper.
189 # The root device and filesystem type can be compiled in;
190 # this provides a fallback option if the root device cannot
191 # be correctly guessed by the bootstrap code, or an override if
192 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
194 options ROOTDEVNAME=\"ufs:da0s2e\"
197 #####################################################################
200 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory. These options
201 # select which scheduler is compiled in.
203 # SCHED_4BSD is the historical, proven, BSD scheduler. It has a global run
204 # queue and no CPU affinity which makes it suboptimal for SMP. It has very
205 # good interactivity and priority selection.
207 # SCHED_ULE provides significant performance advantages over 4BSD on many
208 # workloads on SMP machines. It supports cpu-affinity, per-cpu runqueues
209 # and scheduler locks. It also has a stronger notion of interactivity
210 # which leads to better responsiveness even on uniprocessor machines. This
211 # is the default scheduler.
213 # SCHED_STATS is a debugging option which keeps some stats in the sysctl
214 # tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
220 #####################################################################
223 # SMP enables building of a Symmetric MultiProcessor Kernel.
226 options SMP # Symmetric MultiProcessor Kernel
228 # EARLY_AP_STARTUP releases the Application Processors earlier in the
229 # kernel startup process (before devices are probed) rather than at the
230 # end. This is a temporary option for use during the transition from
231 # late to early AP startup.
232 options EARLY_AP_STARTUP
234 # MAXCPU defines the maximum number of CPUs that can boot in the system.
235 # A default value should be already present, for every architecture.
238 # NUMA enables use of Non-Uniform Memory Access policies in various kernel
242 # MAXMEMDOM defines the maximum number of memory domains that can boot in the
243 # system. A default value should already be defined by every architecture.
246 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
247 # if the thread that currently owns the mutex is executing on another
248 # CPU. This behavior is enabled by default, so this option can be used
250 options NO_ADAPTIVE_MUTEXES
252 # ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
253 # if the thread that currently owns the rwlock is executing on another
254 # CPU. This behavior is enabled by default, so this option can be used
256 options NO_ADAPTIVE_RWLOCKS
258 # ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
259 # currently owns the sx lock is executing on another CPU.
260 # This behavior is enabled by default, so this option can be used to
262 options NO_ADAPTIVE_SX
264 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
265 # operation rather than inlining the simple cases. This can be used to
266 # shrink the size of the kernel text segment. Note that this behavior is
267 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
268 # and WITNESS options.
269 options MUTEX_NOINLINE
271 # RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
272 # operation rather than inlining the simple cases. This can be used to
273 # shrink the size of the kernel text segment. Note that this behavior is
274 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
275 # and WITNESS options.
276 options RWLOCK_NOINLINE
278 # SX_NOINLINE forces sx lock operations to call functions to perform each
279 # operation rather than inlining the simple cases. This can be used to
280 # shrink the size of the kernel text segment. Note that this behavior is
281 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
282 # and WITNESS options.
285 # SMP Debugging Options:
287 # CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
288 # structure used as backend in callout(9).
289 # PREEMPTION allows the threads that are in the kernel to be preempted by
290 # higher priority [interrupt] threads. It helps with interactivity
291 # and allows interrupt threads to run sooner rather than waiting.
292 # WARNING! Only tested on amd64 and i386.
293 # FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
294 # threads. Its sole use is to expose race conditions and other
295 # bugs during development. Enabling this option will reduce
296 # performance and increase the frequency of kernel panics by
297 # design. If you aren't sure that you need it then you don't.
298 # Relies on the PREEMPTION option. DON'T TURN THIS ON.
299 # SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
300 # used to hold active sleep queues as well as sleep wait message
302 # TURNSTILE_PROFILING enables rudimentary profiling of the hash table
303 # used to hold active lock queues.
304 # UMTX_PROFILING enables rudimentary profiling of the hash table used
305 # to hold active lock queues.
306 # WITNESS enables the witness code which detects deadlocks and cycles
307 # during locking operations.
308 # WITNESS_KDB causes the witness code to drop into the kernel debugger if
309 # a lock hierarchy violation occurs or if locks are held when going to
311 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
313 options FULL_PREEMPTION
316 options WITNESS_SKIPSPIN
318 # LOCK_PROFILING - Profiling locks. See LOCK_PROFILING(9) for details.
319 options LOCK_PROFILING
320 # Set the number of buffers and the hash size. The hash size MUST be larger
321 # than the number of buffers. Hash size should be prime.
322 options MPROF_BUFFERS="1536"
323 options MPROF_HASH_SIZE="1543"
325 # Profiling for the callout(9) backend.
326 options CALLOUT_PROFILING
328 # Profiling for internal hash tables.
329 options SLEEPQUEUE_PROFILING
330 options TURNSTILE_PROFILING
331 options UMTX_PROFILING
334 #####################################################################
335 # COMPATIBILITY OPTIONS
340 # Note that as a general rule, COMPAT_FREEBSD<n> depends on
341 # COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
343 # Enable FreeBSD4 compatibility syscalls
344 options COMPAT_FREEBSD4
346 # Enable FreeBSD5 compatibility syscalls
347 options COMPAT_FREEBSD5
349 # Enable FreeBSD6 compatibility syscalls
350 options COMPAT_FREEBSD6
352 # Enable FreeBSD7 compatibility syscalls
353 options COMPAT_FREEBSD7
355 # Enable FreeBSD9 compatibility syscalls
356 options COMPAT_FREEBSD9
358 # Enable FreeBSD10 compatibility syscalls
359 options COMPAT_FREEBSD10
361 # Enable FreeBSD11 compatibility syscalls
362 options COMPAT_FREEBSD11
364 # Enable FreeBSD12 compatibility syscalls
365 options COMPAT_FREEBSD12
367 # Enable Linux Kernel Programming Interface
368 options COMPAT_LINUXKPI
371 # These three options provide support for System V Interface
372 # Definition-style interprocess communication, in the form of shared
373 # memory, semaphores, and message queues, respectively.
380 #####################################################################
384 # Compile with kernel debugger related code.
389 # Print a stack trace of the current thread on the console for a panic.
394 # Don't enter the debugger for a panic. Intended for unattended operation
395 # where you may want to enter the debugger from the console, but still want
396 # the machine to recover from a panic.
398 options KDB_UNATTENDED
401 # Enable the ddb debugger backend.
406 # Print the numerical value of symbols in addition to the symbolic
412 # Enable the remote gdb debugger backend.
417 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
418 # contents of the registered sysctl nodes on the console. It is disabled by
419 # default because it generates excessively verbose console output that can
420 # interfere with serial console operation.
425 # Enable textdump by default, this disables kernel core dumps.
427 options TEXTDUMP_PREFERRED
430 # Enable extra debug messages while performing textdumps.
432 options TEXTDUMP_VERBOSE
435 # NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
437 options NO_SYSCTL_DESCR
440 # MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
441 # allocations that are smaller than a page. The purpose is to isolate
442 # different malloc types into hash classes, so that any buffer
443 # overruns or use-after-free will usually only affect memory from
444 # malloc types in that hash class. This is purely a debugging tool;
445 # by varying the hash function and tracking which hash class was
446 # corrupted, the intersection of the hash classes from each instance
447 # will point to a single malloc type that is being misused. At this
448 # point inspection or memguard(9) can be used to catch the offending
451 options MALLOC_DEBUG_MAXZONES=8
454 # DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
455 # for the kernel used to detect modify-after-free scenarios. See the
456 # memguard(9) man page for more information on usage.
458 options DEBUG_MEMGUARD
461 # DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
464 options DEBUG_REDZONE
467 # EARLY_PRINTF enables support for calling a special printf (eprintf)
468 # very early in the kernel (before cn_init() has been called). This
469 # should only be used for debugging purposes early in boot. Normally,
470 # it is not defined. It is commented out here because this feature
471 # isn't generally available. And the required eputc() isn't defined.
473 #options EARLY_PRINTF
476 # KTRACE enables the system-call tracing facility ktrace(2). To be more
477 # SMP-friendly, KTRACE uses a worker thread to process most trace events
478 # asynchronously to the thread generating the event. This requires a
479 # pre-allocated store of objects representing trace events. The
480 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
481 # The size of the pool can be adjusted both at boottime and runtime via
482 # the kern.ktrace_request_pool tunable and sysctl.
484 options KTRACE #kernel tracing
485 options KTRACE_REQUEST_POOL=101
488 # KTR is a kernel tracing facility imported from BSD/OS. It is
489 # enabled with the KTR option. KTR_ENTRIES defines the number of
490 # entries in the circular trace buffer; it may be an arbitrary number.
491 # KTR_BOOT_ENTRIES defines the number of entries during the early boot,
492 # before malloc(9) is functional.
493 # KTR_COMPILE defines the mask of events to compile into the kernel as
494 # defined by the KTR_* constants in <sys/ktr.h>. KTR_MASK defines the
495 # initial value of the ktr_mask variable which determines at runtime
496 # what events to trace. KTR_CPUMASK determines which CPU's log
497 # events, with bit X corresponding to CPU X. The layout of the string
498 # passed as KTR_CPUMASK must match a series of bitmasks each of them
499 # separated by the "," character (ie:
500 # KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF). KTR_VERBOSE enables
501 # dumping of KTR events to the console by default. This functionality
502 # can be toggled via the debug.ktr_verbose sysctl and defaults to off
503 # if KTR_VERBOSE is not defined. See ktr(4) and ktrdump(8) for details.
506 options KTR_BOOT_ENTRIES=1024
507 options KTR_ENTRIES=(128*1024)
508 options KTR_COMPILE=(KTR_ALL)
509 options KTR_MASK=KTR_INTR
510 options KTR_CPUMASK=0x3
514 # ALQ(9) is a facility for the asynchronous queuing of records from the kernel
515 # to a vnode, and is employed by services such as ktr(4) to produce trace
516 # files based on a kernel event stream. Records are written asynchronously
517 # in a worker thread.
523 # The INVARIANTS option is used in a number of source files to enable
524 # extra sanity checking of internal structures. This support is not
525 # enabled by default because of the extra time it would take to check
526 # for these conditions, which can only occur as a result of
527 # programming errors.
532 # The INVARIANT_SUPPORT option makes us compile in support for
533 # verifying some of the internal structures. It is a prerequisite for
534 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
535 # called. The intent is that you can set 'INVARIANTS' for single
536 # source files (by changing the source file or specifying it on the
537 # command line) if you have 'INVARIANT_SUPPORT' enabled. Also, if you
538 # wish to build a kernel module with 'INVARIANTS', then adding
539 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
540 # infrastructure without the added overhead.
542 options INVARIANT_SUPPORT
545 # The KASSERT_PANIC_OPTIONAL option allows kasserts to fire without
546 # necessarily inducing a panic. Panic is the default behavior, but
547 # runtime options can configure it either entirely off, or off with a
550 options KASSERT_PANIC_OPTIONAL
553 # The DIAGNOSTIC option is used to enable extra debugging information
554 # and invariants checking. The added checks are too expensive or noisy
555 # for an INVARIANTS kernel and thus are disabled by default. It is
556 # expected that a kernel configured with DIAGNOSTIC will also have the
557 # INVARIANTS option enabled.
562 # REGRESSION causes optional kernel interfaces necessary only for regression
563 # testing to be enabled. These interfaces may constitute security risks
564 # when enabled, as they permit processes to easily modify aspects of the
565 # run-time environment to reproduce unlikely or unusual (possibly normally
566 # impossible) scenarios.
571 # This option lets some drivers co-exist that can't co-exist in a running
572 # system. This is used to be able to compile all kernel code in one go for
573 # quality assurance purposes (like this file, which the option takes it name
576 options COMPILING_LINT
579 # STACK enables the stack(9) facility, allowing the capture of kernel stack
580 # for the purpose of procinfo(1), etc. stack(9) will also be compiled in
581 # automatically if DDB(4) is compiled into the kernel.
586 # The NUM_CORE_FILES option specifies the limit for the number of core
587 # files generated by a particular process, when the core file format
588 # specifier includes the %I pattern. Since we only have 1 character for
589 # the core count in the format string, meaning the range will be 0-9, the
590 # maximum value allowed for this option is 10.
591 # This core file limit can be adjusted at runtime via the debug.ncores
594 options NUM_CORE_FILES=5
597 # The TSLOG option enables timestamped logging of events, especially
598 # function entries/exits, in order to track the time spent by the kernel.
599 # In particular, this is useful when investigating the early boot process,
600 # before it is possible to use more sophisticated tools like DTrace.
601 # The TSLOGSIZE option controls the size of the (preallocated, fixed
602 # length) buffer used for storing these events (default: 262144 records).
604 # For security reasons the TSLOG option should not be enabled on systems
605 # used in production.
608 options TSLOGSIZE=262144
611 #####################################################################
612 # PERFORMANCE MONITORING OPTIONS
615 # The hwpmc driver that allows the use of in-CPU performance monitoring
616 # counters for performance monitoring. The base kernel needs to be configured
617 # with the 'options' line, while the hwpmc device can be either compiled
618 # in or loaded as a loadable kernel module.
620 # Additional configuration options may be required on specific architectures,
621 # please see hwpmc(4).
623 device hwpmc # Driver (also a loadable module)
625 options HWPMC_HOOKS # Other necessary kernel hooks
628 #####################################################################
634 options INET #Internet communications protocols
635 options INET6 #IPv6 communications protocols
637 options RATELIMIT # TX rate limiting support
639 options ROUTETABLES=2 # allocated fibs up to 65536. default is 1.
640 # but that would be a bad idea as they are large.
642 options TCP_OFFLOAD # TCP offload support.
643 options TCP_RFC7413 # TCP Fast Open
647 # In order to enable IPSEC you MUST also add device crypto to
648 # your kernel configuration
649 options IPSEC #IP security (requires device crypto)
651 # Option IPSEC_SUPPORT does not enable IPsec, but makes it possible to
652 # load it as a kernel module. You still MUST add device crypto to your kernel
654 options IPSEC_SUPPORT
655 #options IPSEC_DEBUG #debug for IP security
658 # TLS framing and encryption of data transmitted over TCP sockets.
659 options KERN_TLS # TLS transmit offload
663 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
665 options NETSMB #SMB/CIFS requester
667 # mchain library. It can be either loaded as KLD or compiled into kernel
670 # libalias library, performing NAT
674 # SCTP is a NEW transport protocol defined by
675 # RFC2960 updated by RFC3309 and RFC3758.. and
676 # soon to have a new base RFC and many many more
677 # extensions. This release supports all the extensions
678 # including many drafts (most about to become RFC's).
679 # It is the reference implementation of SCTP
680 # and is quite well tested.
682 # Note YOU MUST have both INET and INET6 defined.
683 # You don't have to enable V6, but SCTP is
684 # dual stacked and so far we have not torn apart
685 # the V6 and V4.. since an association can span
686 # both a V6 and V4 address at the SAME time :-)
689 # There are bunches of options:
690 # this one turns on all sorts of
691 # nastily printing that you can
692 # do. It's all controlled by a
693 # bit mask (settable by socket opt and
694 # by sysctl). Including will not cause
695 # logging until you set the bits.. but it
696 # can be quite verbose.. so without this
697 # option we don't do any of the tests for
698 # bits and prints.. which makes the code run
699 # faster.. if you are not debugging don't use.
702 # All that options after that turn on specific types of
703 # logging. You can monitor CWND growth, flight size
704 # and all sorts of things. Go look at the code and
705 # see. I have used this to produce interesting
706 # charts and graphs as well :->
708 # I have not yet committed the tools to get and print
709 # the logs, I will do that eventually .. before then
710 # if you want them send me an email rrs@freebsd.org
711 # You basically must have ktr(4) enabled for these
712 # and you then set the sysctl to turn on/off various
713 # logging bits. Use ktrdump(8) to pull the log and run
714 # it through a display program.. and graphs and other
717 options SCTP_LOCK_LOGGING
718 options SCTP_MBUF_LOGGING
719 options SCTP_MBCNT_LOGGING
720 options SCTP_PACKET_LOGGING
721 options SCTP_LTRACE_CHUNKS
722 options SCTP_LTRACE_ERRORS
725 # altq(9). Enable the base part of the hooks with the ALTQ option.
726 # Individual disciplines must be built into the base system and can not be
727 # loaded as modules at this point. ALTQ requires a stable TSC so if yours is
728 # broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
731 options ALTQ_CBQ # Class Based Queueing
732 options ALTQ_RED # Random Early Detection
733 options ALTQ_RIO # RED In/Out
734 options ALTQ_CODEL # CoDel Active Queueing
735 options ALTQ_HFSC # Hierarchical Packet Scheduler
736 options ALTQ_FAIRQ # Fair Packet Scheduler
737 options ALTQ_CDNR # Traffic conditioner
738 options ALTQ_PRIQ # Priority Queueing
739 options ALTQ_NOPCC # Required if the TSC is unusable
742 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
743 # Individual node types can be enabled with the corresponding option
744 # listed below; however, this is not strictly necessary as netgraph
745 # will automatically load the corresponding KLD module if the node type
746 # is not already compiled into the kernel. Each type below has a
747 # corresponding man page, e.g., ng_async(8).
748 options NETGRAPH # netgraph(4) system
749 options NETGRAPH_DEBUG # enable extra debugging, this
750 # affects netgraph(4) and nodes
752 options NETGRAPH_ASYNC
753 options NETGRAPH_ATMLLC
754 options NETGRAPH_ATM_ATMPIF
755 options NETGRAPH_BLUETOOTH # ng_bluetooth(4)
756 options NETGRAPH_BLUETOOTH_BT3C # ng_bt3c(4)
757 options NETGRAPH_BLUETOOTH_HCI # ng_hci(4)
758 options NETGRAPH_BLUETOOTH_L2CAP # ng_l2cap(4)
759 options NETGRAPH_BLUETOOTH_SOCKET # ng_btsocket(4)
760 options NETGRAPH_BLUETOOTH_UBT # ng_ubt(4)
761 options NETGRAPH_BLUETOOTH_UBTBCMFW # ubtbcmfw(4)
763 options NETGRAPH_BRIDGE
765 options NETGRAPH_CHECKSUM
766 options NETGRAPH_CISCO
767 options NETGRAPH_DEFLATE
768 options NETGRAPH_DEVICE
769 options NETGRAPH_ECHO
770 options NETGRAPH_EIFACE
771 options NETGRAPH_ETHER
772 options NETGRAPH_FRAME_RELAY
774 options NETGRAPH_GIF_DEMUX
775 options NETGRAPH_HOLE
776 options NETGRAPH_IFACE
777 options NETGRAPH_IP_INPUT
778 options NETGRAPH_IPFW
779 options NETGRAPH_KSOCKET
780 options NETGRAPH_L2TP
782 options NETGRAPH_MPPC_COMPRESSION
783 options NETGRAPH_MPPC_ENCRYPTION
784 options NETGRAPH_NETFLOW
786 options NETGRAPH_ONE2MANY
787 options NETGRAPH_PATCH
788 options NETGRAPH_PIPE
790 options NETGRAPH_PPPOE
791 options NETGRAPH_PPTPGRE
792 options NETGRAPH_PRED1
793 options NETGRAPH_RFC1490
794 options NETGRAPH_SOCKET
795 options NETGRAPH_SPLIT
796 options NETGRAPH_SPPP
798 options NETGRAPH_TCPMSS
802 options NETGRAPH_VLAN
804 # NgATM - Netgraph ATM
806 options NGATM_ATMBASE
812 device mn # Munich32x/Falc54 Nx64kbit/sec cards.
814 # Network stack virtualization.
816 options VNET_DEBUG # debug for VIMAGE
819 # Network interfaces:
820 # The `loop' device is MANDATORY when networking is enabled.
823 # The `ether' device provides generic code to handle
824 # Ethernets; it is MANDATORY when an Ethernet device driver is
828 # The `vlan' device implements the VLAN tagging of Ethernet frames
829 # according to IEEE 802.1Q.
832 # The `vxlan' device implements the VXLAN encapsulation of Ethernet
833 # frames in UDP packets according to RFC7348.
836 # The `wlan' device provides generic code to support 802.11
837 # drivers, including host AP mode; it is MANDATORY for the wi,
838 # and ath drivers and will eventually be required by all 802.11 drivers.
840 options IEEE80211_DEBUG #enable debugging msgs
841 options IEEE80211_SUPPORT_MESH #enable 802.11s D3.0 support
842 options IEEE80211_SUPPORT_TDMA #enable TDMA support
844 # The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
845 # support for WEP, TKIP, and AES-CCMP crypto protocols optionally
846 # used with 802.11 devices that depend on the `wlan' module.
851 # The `wlan_xauth' device provides support for external (i.e. user-mode)
852 # authenticators for use with 802.11 drivers that use the `wlan'
853 # module and support 802.1x and/or WPA security protocols.
856 # The `wlan_acl' device provides a MAC-based access control mechanism
857 # for use with 802.11 drivers operating in ap mode and using the
859 # The 'wlan_amrr' device provides AMRR transmit rate control algorithm
863 # The `sppp' device serves a similar role for certain types
864 # of synchronous PPP links (like `cx', `ar').
867 # The `bpf' device enables the Berkeley Packet Filter. Be
868 # aware of the legal and administrative consequences of enabling this
869 # option. DHCP requires bpf.
872 # The `netmap' device implements memory-mapped access to network
873 # devices from userspace, enabling wire-speed packet capture and
874 # generation even at 10Gbit/s. Requires support in the device
875 # driver. Supported drivers are ixgbe, e1000, re.
878 # The `disc' device implements a minimal network interface,
879 # which throws away all packets sent and never receives any. It is
880 # included for testing and benchmarking purposes.
883 # The `epair' device implements a virtual back-to-back connected Ethernet
884 # like interface pair.
887 # The `edsc' device implements a minimal Ethernet interface,
888 # which discards all packets sent and receives none.
891 # The `tuntap' device implements (user-)ppp, nos-tun(8) and a pty-like virtual
895 # The `gif' device implements IPv6 over IP4 tunneling,
896 # IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
897 # IPv6 over IPv6 tunneling.
898 # The `gre' device implements GRE (Generic Routing Encapsulation) tunneling,
899 # as specified in the RFC 2784 and RFC 2890.
900 # The `me' device implements Minimal Encapsulation within IPv4 as
901 # specified in the RFC 2004.
902 # The XBONEHACK option allows the same pair of addresses to be configured on
903 # multiple gif interfaces.
909 # The `stf' device implements 6to4 encapsulation.
912 # The pf packet filter consists of three devices:
913 # The `pf' device provides /dev/pf and the firewall code itself.
914 # The `pflog' device provides the pflog0 interface which logs packets.
915 # The `pfsync' device provides the pfsync0 interface used for
916 # synchronization of firewall state tables (over the net).
924 # Common Address Redundancy Protocol. See carp(4) for more details.
930 # Link aggregation interface.
934 # Internet family options:
936 # MROUTING enables the kernel multicast packet forwarder, which works
937 # with mrouted and XORP.
939 # IPFIREWALL enables support for IP firewall construction, in
940 # conjunction with the `ipfw' program. IPFIREWALL_VERBOSE sends
941 # logged packets to the system logger. IPFIREWALL_VERBOSE_LIMIT
942 # limits the number of times a matching entry can be logged.
944 # WARNING: IPFIREWALL defaults to a policy of "deny ip from any to any"
945 # and if you do not add other rules during startup to allow access,
946 # YOU WILL LOCK YOURSELF OUT. It is suggested that you set firewall_type=open
947 # in /etc/rc.conf when first enabling this feature, then refining the
948 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
949 # feature works properly.
951 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
952 # allow everything. Use with care, if a cracker can crash your
953 # firewall machine, they can get to your protected machines. However,
954 # if you are using it as an as-needed filter for specific problems as
955 # they arise, then this may be for you. Changing the default to 'allow'
956 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
959 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''. It
960 # depends on IPFIREWALL if compiled into the kernel.
962 # IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
965 # IPFIREWALL_NAT64 adds support for in kernel NAT64 in ipfw.
967 # IPFIREWALL_NPTV6 adds support for in kernel NPTv6 in ipfw.
969 # IPFIREWALL_PMOD adds support for protocols modification module. Currently
970 # it supports only TCP MSS modification.
972 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
973 # packets without touching the TTL). This can be useful to hide firewalls
974 # from traceroute and similar tools.
976 # PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
978 # TCPDEBUG enables code which keeps traces of the TCP state machine
979 # for sockets with the SO_DEBUG option set, which can then be examined
980 # using the trpt(8) utility.
982 # TCPPCAP enables code which keeps the last n packets sent and received
985 # TCP_BLACKBOX enables enhanced TCP event logging.
987 # TCP_HHOOK enables the hhook(9) framework hooks for the TCP stack.
989 # RADIX_MPATH provides support for equal-cost multi-path routing.
991 options MROUTING # Multicast routing
992 options IPFIREWALL #firewall
993 options IPFIREWALL_VERBOSE #enable logging to syslogd(8)
994 options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
995 options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default
996 options IPFIREWALL_NAT #ipfw kernel nat support
997 options IPFIREWALL_NAT64 #ipfw kernel NAT64 support
998 options IPFIREWALL_NPTV6 #ipfw kernel IPv6 NPT support
999 options IPDIVERT #divert sockets
1000 options IPFILTER #ipfilter support
1001 options IPFILTER_LOG #ipfilter logging
1002 options IPFILTER_LOOKUP #ipfilter pools
1003 options IPFILTER_DEFAULT_BLOCK #block all packets by default
1004 options IPSTEALTH #support for stealth forwarding
1005 options PF_DEFAULT_TO_DROP #drop everything by default
1008 options TCP_BLACKBOX
1012 # The MBUF_STRESS_TEST option enables options which create
1013 # various random failures / extreme cases related to mbuf
1014 # functions. See mbuf(9) for a list of available test cases.
1015 # MBUF_PROFILING enables code to profile the mbuf chains
1016 # exiting the system (via participating interfaces) and
1017 # return a logarithmic histogram of monitored parameters
1018 # (e.g. packet size, wasted space, number of mbufs in chain).
1019 options MBUF_STRESS_TEST
1020 options MBUF_PROFILING
1022 # Statically link in accept filters
1023 options ACCEPT_FILTER_DATA
1024 options ACCEPT_FILTER_DNS
1025 options ACCEPT_FILTER_HTTP
1027 # TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
1028 # carried in TCP option 19. This option is commonly used to protect
1029 # TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
1030 # This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
1031 # This requires the use of 'device crypto' and either 'options IPSEC' or
1032 # 'options IPSEC_SUPPORT'.
1033 options TCP_SIGNATURE #include support for RFC 2385
1035 # DUMMYNET enables the "dummynet" bandwidth limiter. You need IPFIREWALL
1036 # as well. See dummynet(4) and ipfw(8) for more info. When you run
1037 # DUMMYNET it is advisable to also have at least "options HZ=1000" to achieve
1038 # a smooth scheduling of the traffic.
1041 # The NETDUMP option enables netdump(4) client support in the kernel.
1042 # This allows a panicking kernel to transmit a kernel dump to a remote host.
1045 #####################################################################
1046 # FILESYSTEM OPTIONS
1049 # Only the root filesystem needs to be statically compiled or preloaded
1050 # as module; everything else will be automatically loaded at mount
1051 # time. Some people still prefer to statically compile other
1052 # filesystems as well.
1054 # NB: The UNION filesystem was known to be buggy in the past. It is now
1055 # being actively maintained, although there are still some issues being
1059 # One of these is mandatory:
1060 options FFS #Fast filesystem
1061 options NFSCL #Network File System client
1063 # The rest are optional:
1064 options AUTOFS #Automounter filesystem
1065 options CD9660 #ISO 9660 filesystem
1066 options FDESCFS #File descriptor filesystem
1067 options FUSEFS #FUSEFS support module
1068 options MSDOSFS #MS DOS File System (FAT, FAT32)
1069 options NFSLOCKD #Network Lock Manager
1070 options NFSD #Network Filesystem Server
1071 options KGSSAPI #Kernel GSSAPI implementation
1073 options NULLFS #NULL filesystem
1074 options PROCFS #Process filesystem (requires PSEUDOFS)
1075 options PSEUDOFS #Pseudo-filesystem framework
1076 options PSEUDOFS_TRACE #Debugging support for PSEUDOFS
1077 options SMBFS #SMB/CIFS filesystem
1078 options TMPFS #Efficient memory filesystem
1079 options UDF #Universal Disk Format
1080 options UNIONFS #Union filesystem
1081 # The xFS_ROOT options REQUIRE the associated ``options xFS''
1082 options NFS_ROOT #NFS usable as root device
1084 # Soft updates is a technique for improving filesystem speed and
1085 # making abrupt shutdown less risky.
1089 # Extended attributes allow additional data to be associated with files,
1090 # and is used for ACLs, Capabilities, and MAC labels.
1091 # See src/sys/ufs/ufs/README.extattr for more information.
1093 options UFS_EXTATTR_AUTOSTART
1095 # Access Control List support for UFS filesystems. The current ACL
1096 # implementation requires extended attribute support, UFS_EXTATTR,
1097 # for the underlying filesystem.
1098 # See src/sys/ufs/ufs/README.acls for more information.
1101 # Directory hashing improves the speed of operations on very large
1102 # directories at the expense of some memory.
1105 # Gjournal-based UFS journaling support.
1106 options UFS_GJOURNAL
1108 # Make space in the kernel for a root filesystem on a md device.
1109 # Define to the number of kilobytes to reserve for the filesystem.
1110 # This is now optional.
1111 # If not defined, the root filesystem passed in as the MFS_IMAGE makeoption
1112 # will be automatically embedded in the kernel during linking. Its exact size
1113 # will be consumed within the kernel.
1114 # If defined, the old way of embedding the filesystem in the kernel will be
1115 # used. That is to say MD_ROOT_SIZE KB will be allocated in the kernel and
1116 # later, the filesystem image passed in as the MFS_IMAGE makeoption will be
1117 # dd'd into the reserved space if it fits.
1118 options MD_ROOT_SIZE=10
1120 # Make the md device a potential root device, either with preloaded
1121 # images of type mfs_root or md_root.
1124 # Write-protect the md root device so that it may not be mounted writeable.
1125 options MD_ROOT_READONLY
1127 # Allow to read MD image from external memory regions
1130 # Disk quotas are supported when this option is enabled.
1131 options QUOTA #enable disk quotas
1133 # If you are running a machine just as a fileserver for PC and MAC
1134 # users, using SAMBA, you may consider setting this option
1135 # and keeping all those users' directories on a filesystem that is
1136 # mounted with the suiddir option. This gives new files the same
1137 # ownership as the directory (similar to group). It's a security hole
1138 # if you let these users run programs, so confine it to file-servers
1139 # (but it'll save you lots of headaches in those cases). Root owned
1140 # directories are exempt and X bits are cleared. The suid bit must be
1141 # set on the directory as well; see chmod(1). PC owners can't see/set
1142 # ownerships so they keep getting their toes trodden on. This saves
1143 # you all the support calls as the filesystem it's used on will act as
1144 # they expect: "It's my dir so it must be my file".
1149 options NFS_MINATTRTIMO=3 # VREG attrib cache timeout in sec
1150 options NFS_MAXATTRTIMO=60
1151 options NFS_MINDIRATTRTIMO=30 # VDIR attrib cache timeout in sec
1152 options NFS_MAXDIRATTRTIMO=60
1153 options NFS_DEBUG # Enable NFS Debugging
1156 # Add support for the EXT2FS filesystem of Linux fame. Be a bit
1157 # careful with this - the ext2fs code has a tendency to lag behind
1158 # changes and not be exercised very much, so mounting read/write could
1159 # be dangerous (and even mounting read only could result in panics.)
1163 # The system memory devices; /dev/mem, /dev/kmem
1166 # The kernel symbol table device; /dev/ksyms
1169 # Optional character code conversion support with LIBICONV.
1170 # Each option requires their base file system and LIBICONV.
1171 options CD9660_ICONV
1172 options MSDOSFS_ICONV
1176 #####################################################################
1179 # Real time extensions added in the 1993 POSIX
1180 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1182 options _KPOSIX_PRIORITY_SCHEDULING
1183 # p1003_1b_semaphores are very experimental,
1184 # user should be ready to assist in debugging if problems arise.
1185 options P1003_1B_SEMAPHORES
1187 # POSIX message queue
1188 options P1003_1B_MQUEUE
1190 #####################################################################
1191 # SECURITY POLICY PARAMETERS
1193 # Support for BSM audit
1196 # Support for Mandatory Access Control (MAC):
1199 options MAC_BSDEXTENDED
1205 options MAC_PARTITION
1207 options MAC_SEEOTHERUIDS
1211 # Support for Capsicum
1212 options CAPABILITIES # fine-grained rights on file descriptors
1213 options CAPABILITY_MODE # sandboxes with no global namespace access
1216 #####################################################################
1219 # The granularity of operation is controlled by the kernel option HZ whose
1220 # default value (1000 on most architectures) means a granularity of 1ms
1221 # (1s/HZ). Historically, the default was 100, but finer granularity is
1222 # required for DUMMYNET and other systems on modern hardware. There are
1223 # reasonable arguments that HZ should, in fact, be 100 still; consider,
1224 # that reducing the granularity too much might cause excessive overhead in
1225 # clock interrupt processing, potentially causing ticks to be missed and thus
1226 # actually reducing the accuracy of operation.
1230 # Enable support for the kernel PLL to use an external PPS signal,
1231 # under supervision of [x]ntpd(8)
1232 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
1236 # Enable support for generic feed-forward clocks in the kernel.
1237 # The feed-forward clock support is an alternative to the feedback oriented
1238 # ntpd/system clock approach, and is to be used with a feed-forward
1239 # synchronization algorithm such as the RADclock:
1240 # More info here: http://www.synclab.org/radclock
1245 #####################################################################
1248 # SCSI DEVICE CONFIGURATION
1250 # The SCSI subsystem consists of the `base' SCSI code, a number of
1251 # high-level SCSI device `type' drivers, and the low-level host-adapter
1252 # device drivers. The host adapters are listed in the ISA and PCI
1253 # device configuration sections below.
1255 # It is possible to wire down your SCSI devices so that a given bus,
1256 # target, and LUN always come on line as the same device unit. In
1257 # earlier versions the unit numbers were assigned in the order that
1258 # the devices were probed on the SCSI bus. This means that if you
1259 # removed a disk drive, you may have had to rewrite your /etc/fstab
1260 # file, and also that you had to be careful when adding a new disk
1261 # as it may have been probed earlier and moved your device configuration
1264 # This old behavior is maintained as the default behavior. The unit
1265 # assignment begins with the first non-wired down unit for a device
1266 # type. For example, if you wire a disk as "da3" then the first
1267 # non-wired disk will be assigned da4.
1269 # The syntax for wiring down devices is:
1271 hint.scbus.0.at="ahc0"
1272 hint.scbus.1.at="ahc1"
1273 hint.scbus.1.bus="0"
1274 hint.scbus.3.at="ahc2"
1275 hint.scbus.3.bus="0"
1276 hint.scbus.2.at="ahc2"
1277 hint.scbus.2.bus="1"
1278 hint.da.0.at="scbus0"
1279 hint.da.0.target="0"
1281 hint.da.1.at="scbus3"
1282 hint.da.1.target="1"
1283 hint.da.2.at="scbus2"
1284 hint.da.2.target="3"
1285 hint.sa.1.at="scbus1"
1286 hint.sa.1.target="6"
1288 # "units" (SCSI logical unit number) that are not specified are
1289 # treated as if specified as LUN 0.
1291 # All SCSI devices allocate as many units as are required.
1293 # The ch driver drives SCSI Media Changer ("jukebox") devices.
1295 # The da driver drives SCSI Direct Access ("disk") and Optical Media
1298 # The sa driver drives SCSI Sequential Access ("tape") devices.
1300 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1302 # The ses driver drives SCSI Environment Services ("ses") and
1303 # SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1305 # The pt driver drives SCSI Processor devices.
1307 # The sg driver provides a passthrough API that is compatible with the
1308 # Linux SG driver. It will work in conjunction with the COMPAT_LINUX
1309 # option to run linux SG apps. It can also stand on its own and provide
1310 # source level API compatibility for porting apps to FreeBSD.
1312 # Target Mode support is provided here but also requires that a SIM
1313 # (SCSI Host Adapter Driver) provide support as well.
1315 # The targ driver provides target mode support as a Processor type device.
1316 # It exists to give the minimal context necessary to respond to Inquiry
1317 # commands. There is a sample user application that shows how the rest
1318 # of the command support might be done in /usr/share/examples/scsi_target.
1320 # The targbh driver provides target mode support and exists to respond
1321 # to incoming commands that do not otherwise have a logical unit assigned
1324 # The pass driver provides a passthrough API to access the CAM subsystem.
1326 device scbus #base SCSI code
1327 device ch #SCSI media changers
1328 device da #SCSI direct access devices (aka disks)
1329 device sa #SCSI tapes
1330 device cd #SCSI CD-ROMs
1331 device ses #Enclosure Services (SES and SAF-TE)
1332 device pt #SCSI processor
1333 device targ #SCSI Target Mode Code
1334 device targbh #SCSI Target Mode Blackhole Device
1335 device pass #CAM passthrough driver
1336 device sg #Linux SCSI passthrough
1337 device ctl #CAM Target Layer
1340 # debugging options:
1341 # CAMDEBUG Compile in all possible debugging.
1342 # CAM_DEBUG_COMPILE Debug levels to compile in.
1343 # CAM_DEBUG_FLAGS Debug levels to enable on boot.
1344 # CAM_DEBUG_BUS Limit debugging to the given bus.
1345 # CAM_DEBUG_TARGET Limit debugging to the given target.
1346 # CAM_DEBUG_LUN Limit debugging to the given lun.
1347 # CAM_DEBUG_DELAY Delay in us after printing each debug line.
1349 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1350 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1351 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
1352 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
1353 # queue after a bus reset, and the number of milliseconds to
1354 # freeze the device queue after a bus device reset. This
1355 # can be changed at boot and runtime with the
1356 # kern.cam.scsi_delay tunable/sysctl.
1358 options CAM_DEBUG_COMPILE=-1
1359 options CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
1360 options CAM_DEBUG_BUS=-1
1361 options CAM_DEBUG_TARGET=-1
1362 options CAM_DEBUG_LUN=-1
1363 options CAM_DEBUG_DELAY=1
1364 options CAM_MAX_HIGHPOWER=4
1365 options SCSI_NO_SENSE_STRINGS
1366 options SCSI_NO_OP_STRINGS
1367 options SCSI_DELAY=5000 # Be pessimistic about Joe SCSI device
1368 options CAM_IOSCHED_DYNAMIC
1369 options CAM_TEST_FAILURE
1371 # Options for the CAM CDROM driver:
1372 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1373 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1374 # enforced if there is I/O waiting for another LUN
1375 # The compiled in defaults for these variables are 2 and 10 seconds,
1378 # These can also be changed on the fly with the following sysctl variables:
1379 # kern.cam.cd.changer.min_busy_seconds
1380 # kern.cam.cd.changer.max_busy_seconds
1382 options CHANGER_MIN_BUSY_SECONDS=2
1383 options CHANGER_MAX_BUSY_SECONDS=10
1385 # Options for the CAM sequential access driver:
1386 # SA_IO_TIMEOUT: Timeout for read/write/wfm operations, in minutes
1387 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
1388 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
1389 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
1390 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
1391 options SA_IO_TIMEOUT=4
1392 options SA_SPACE_TIMEOUT=60
1393 options SA_REWIND_TIMEOUT=(2*60)
1394 options SA_ERASE_TIMEOUT=(4*60)
1395 options SA_1FM_AT_EOD
1397 # Optional timeout for the CAM processor target (pt) device
1398 # This is specified in seconds. The default is 60 seconds.
1399 options SCSI_PT_DEFAULT_TIMEOUT=60
1401 # Optional enable of doing SES passthrough on other devices (e.g., disks)
1403 # Normally disabled because a lot of newer SCSI disks report themselves
1404 # as having SES capabilities, but this can then clot up attempts to build
1405 # a topology with the SES device that's on the box these drives are in....
1406 options SES_ENABLE_PASSTHROUGH
1409 #####################################################################
1410 # MISCELLANEOUS DEVICES AND OPTIONS
1412 device pty #BSD-style compatibility pseudo ttys
1413 device nmdm #back-to-back tty devices
1414 device md #Memory/malloc disk
1415 device snp #Snoop device - to look at pty/vty/etc..
1416 device ccd #Concatenated disk driver
1417 device firmware #firmware(9) support
1419 # Kernel side iconv library
1422 # Size of the kernel message buffer. Should be N * pagesize.
1423 options MSGBUF_SIZE=40960
1426 #####################################################################
1427 # HARDWARE BUS CONFIGURATION
1430 # PCI bus & PCI options:
1433 options PCI_HP # PCI-Express native HotPlug
1434 options PCI_IOV # PCI SR-IOV support
1437 #####################################################################
1438 # HARDWARE DEVICE CONFIGURATION
1440 # For ISA the required hints are listed.
1441 # PCI, CardBus, SD/MMC and pccard are self identifying buses, so
1442 # no hints are needed.
1445 # Mandatory devices:
1448 # These options are valid for other keyboard drivers as well.
1449 options KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
1450 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
1452 device kbdmux # keyboard multiplexer
1453 options KBDMUX_DFLT_KEYMAP # specify the built-in keymap
1454 makeoptions KBDMUX_DFLT_KEYMAP=it.iso
1456 options FB_DEBUG # Frame buffer debugging
1458 # Enable experimental features of the syscons terminal emulator (teken).
1459 options TEKEN_CONS25 # cons25-style terminal emulation
1460 options TEKEN_UTF8 # UTF-8 output handling
1462 # The vt video console driver.
1464 options VT_ALT_TO_ESC_HACK=1 # Prepend ESC sequence to ALT keys
1465 options VT_MAXWINDOWS=16 # Number of virtual consoles
1466 options VT_TWOBUTTON_MOUSE # Use right mouse button to paste
1468 # The following options set the default framebuffer size.
1469 options VT_FB_DEFAULT_HEIGHT=480
1470 options VT_FB_DEFAULT_WIDTH=640
1472 # The following options will let you change the default vt terminal colors.
1473 options TERMINAL_NORM_ATTR=(FG_GREEN|BG_BLACK)
1474 options TERMINAL_KERN_ATTR=(FG_LIGHTRED|BG_BLACK)
1481 # SCSI host adapters:
1483 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1484 # 19160x/29160x, aic7770/aic78xx
1485 # ahd: Adaptec 29320/39320 Controllers.
1486 # esp: Emulex ESP, NCR 53C9x and QLogic FAS families based controllers
1487 # including the AMD Am53C974 (found on devices such as the Tekram
1488 # DC-390(T)) and the Sun ESP and FAS families of controllers
1489 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1490 # ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1491 # ISP 12160 Ultra3 SCSI,
1492 # Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1493 # Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1494 # Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
1495 # ispfw: Firmware module for Qlogic host adapters
1496 # mpr: LSI-Logic MPT/Fusion Gen 3
1497 # mps: LSI-Logic MPT/Fusion Gen 2
1498 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
1499 # or FC9x9 Fibre Channel host adapters.
1500 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1501 # 53C810, 53C810A, 53C815, 53C825, 53C825A, 53C860, 53C875,
1502 # 53C876, 53C885, 53C895, 53C895A, 53C896, 53C897, 53C1510D,
1503 # 53C1010-33, 53C1010-66.
1504 # trm: Tekram DC395U/UW/F DC315U adapters.
1509 device iscsi_initiator
1511 hint.isp.0.disable="1"
1513 hint.isp.0.prefer_iomap="1"
1514 hint.isp.0.prefer_memmap="1"
1515 hint.isp.0.fwload_disable="1"
1516 hint.isp.0.ignore_nvram="1"
1517 hint.isp.0.fullduplex="1"
1518 hint.isp.0.topology="lport"
1519 hint.isp.0.topology="nport"
1520 hint.isp.0.topology="lport-only"
1521 hint.isp.0.topology="nport-only"
1522 # we can't get u_int64_t types, nor can we get strings if it's got
1523 # a leading 0x, hence this silly dodge.
1524 hint.isp.0.portwnn="w50000000aaaa0000"
1525 hint.isp.0.nodewnn="w50000000aaaa0001"
1527 device mpr # LSI-Logic MPT-Fusion 3
1528 device mps # LSI-Logic MPT-Fusion 2
1529 device mpt # LSI-Logic MPT-Fusion
1533 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1534 # controllers that have it configured only if this option is set. Unfortunately,
1535 # this doesn't work on some motherboards, which prevents it from being the
1537 options AHC_ALLOW_MEMIO
1539 # Dump the contents of the ahc controller configuration PROM.
1540 options AHC_DUMP_EEPROM
1542 # Bitmap of units to enable targetmode operations.
1543 options AHC_TMODE_ENABLE
1545 # Compile in Aic7xxx Debugging code.
1548 # Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1549 options AHC_DEBUG_OPTS
1551 # Print register bitfields in debug output. Adds ~128k to driver
1553 options AHC_REG_PRETTY_PRINT
1555 # Compile in aic79xx debugging code.
1558 # Aic79xx driver debugging options. Adds ~215k to driver. See ahd(4).
1559 options AHD_DEBUG_OPTS=0xFFFFFFFF
1561 # Print human-readable register definitions when debugging
1562 options AHD_REG_PRETTY_PRINT
1564 # Bitmap of units to enable targetmode operations.
1565 options AHD_TMODE_ENABLE
1567 # Options used in dev/iscsi (Software iSCSI stack)
1569 options ISCSI_INITIATOR_DEBUG=9
1571 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
1573 # ISP_TARGET_MODE - enable target mode operation
1575 options ISP_TARGET_MODE=1
1577 # ISP_DEFAULT_ROLES - default role
1581 # both=3 (not supported currently)
1583 # ISP_INTERNAL_TARGET (trivial internal disk target, for testing)
1585 options ISP_DEFAULT_ROLES=0
1587 #options SYM_SETUP_SCSI_DIFF #-HVD support for 825a, 875, 885
1588 # disabled:0 (default), enabled:1
1589 #options SYM_SETUP_PCI_PARITY #-PCI parity checking
1590 # disabled:0, enabled:1 (default)
1591 #options SYM_SETUP_MAX_LUN #-Number of LUNs supported
1592 # default:8, range:[1..64]
1595 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
1596 # These controllers have a SCSI-like interface, and require the
1597 # CAM infrastructure.
1602 # Intel Integrated RAID controllers.
1603 # This driver was developed and is maintained by Intel. Contacts
1604 # at Intel for this driver are
1605 # "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
1606 # "Leubner, Achim" <achim.leubner@intel.com>.
1611 # Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
1612 # firmware. These controllers have a SCSI-like interface, and require
1613 # the CAM infrastructure.
1618 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers. Only
1619 # one entry is needed; the code will find and configure all supported
1622 device ida # Compaq Smart RAID
1623 device mlx # Mylex DAC960
1624 device amr # AMI MegaRAID
1625 device amrp # SCSI Passthrough interface (optional, CAM req.)
1626 device mfi # LSI MegaRAID SAS
1627 device mfip # LSI MegaRAID SAS passthrough, requires CAM
1629 device mrsas # LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
1634 device twe # 3ware ATA RAID
1637 # Serial ATA host controllers:
1639 # ahci: Advanced Host Controller Interface (AHCI) compatible
1640 # mvs: Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
1641 # siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
1643 # These drivers are part of cam(4) subsystem. They supersede less featured
1644 # ata(4) subsystem drivers, supporting same hardware.
1651 # The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
1652 # PC Card devices. You only need one "device ata" for it to find all
1653 # PCI and PC Card ATA/ATAPI devices on modern machines.
1654 # Alternatively, individual bus and chipset drivers may be chosen by using
1655 # the 'atacore' driver then selecting the drivers on a per vendor basis.
1656 # For example to build a system which only supports a VIA chipset,
1657 # omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
1661 #device atacore # Core ATA functionality
1662 #device atapccard # CARDBUS support
1663 #device ataisa # ISA bus support
1664 #device atapci # PCI bus support; only generic chipset support
1667 #device ataacard # ACARD
1668 #device ataacerlabs # Acer Labs Inc. (ALI)
1669 #device ataamd # American Micro Devices (AMD)
1670 #device ataati # ATI
1671 #device atacenatek # Cenatek
1672 #device atacypress # Cypress
1673 #device atacyrix # Cyrix
1674 #device atahighpoint # HighPoint
1675 #device ataintel # Intel
1676 #device ataite # Integrated Technology Inc. (ITE)
1677 #device atajmicron # JMicron
1678 #device atamarvell # Marvell
1679 #device atamicron # Micron
1680 #device atanational # National
1681 #device atanetcell # NetCell
1682 #device atanvidia # nVidia
1683 #device atapromise # Promise
1684 #device ataserverworks # ServerWorks
1685 #device atasiliconimage # Silicon Image Inc. (SiI) (formerly CMD)
1686 #device atasis # Silicon Integrated Systems Corp.(SiS)
1687 #device atavia # VIA Technologies Inc.
1690 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1692 hint.ata.0.port="0x1f0"
1695 hint.ata.1.port="0x170"
1699 # uart: newbusified driver for serial interfaces. It consolidates the sio(4),
1700 # sab(4) and zs(4) drivers.
1704 # Options for uart(4)
1705 options UART_PPS_ON_CTS # Do time pulse capturing using CTS
1707 options UART_POLL_FREQ # Set polling rate, used when hw has
1708 # no interrupt support (50 Hz default).
1710 # The following hint should only be used for pure ISA devices. It is not
1711 # needed otherwise. Use of hints is strongly discouraged.
1712 hint.uart.0.at="isa"
1714 # The following 3 hints are used when the UART is a system device (i.e., a
1715 # console or debug port), but only on platforms that don't have any other
1716 # means to pass the information to the kernel. The unit number of the hint
1717 # is only used to bundle the hints together. There is no relation to the
1718 # unit number of the probed UART.
1719 hint.uart.0.port="0x3f8"
1720 hint.uart.0.flags="0x10"
1721 hint.uart.0.baud="115200"
1723 # `flags' for serial drivers that support consoles like sio(4) and uart(4):
1724 # 0x10 enable console support for this unit. Other console flags
1725 # (if applicable) are ignored unless this is set. Enabling
1726 # console support does not make the unit the preferred console.
1727 # Boot with -h or set boot_serial=YES in the loader. For sio(4)
1728 # specifically, the 0x20 flag can also be set (see above).
1729 # Currently, at most one unit can have console support; the
1730 # first one (in config file order) with this flag set is
1731 # preferred. Setting this flag for sio0 gives the old behavior.
1732 # 0x80 use this port for serial line gdb support in ddb. Also known
1736 # Options for serial drivers that support consoles:
1737 options BREAK_TO_DEBUGGER # A BREAK/DBG on the console goes to
1738 # ddb, if available.
1740 # Solaris implements a new BREAK which is initiated by a character
1741 # sequence CR ~ ^b which is similar to a familiar pattern used on
1742 # Sun servers by the Remote Console. There are FreeBSD extensions:
1743 # CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
1744 options ALT_BREAK_TO_DEBUGGER
1746 # Serial Communications Controller
1747 # Supports the Siemens SAB 82532 and Zilog Z8530 multi-channel
1748 # communications controllers.
1751 # PCI Universal Communications driver
1752 # Supports various multi port PCI I/O cards.
1756 # Network interfaces:
1758 # MII bus support is required for many PCI Ethernet NICs,
1759 # namely those which use MII-compliant transceivers or implement
1760 # transceiver control interfaces that operate like an MII. Adding
1761 # "device miibus" to the kernel config pulls in support for the generic
1762 # miibus API, the common support for for bit-bang'ing the MII and all
1763 # of the PHY drivers, including a generic one for PHYs that aren't
1764 # specifically handled by an individual driver. Support for specific
1765 # PHYs may be built by adding "device mii", "device mii_bitbang" if
1766 # needed by the NIC driver and then adding the appropriate PHY driver.
1767 device mii # Minimal MII support
1768 device mii_bitbang # Common module for bit-bang'ing the MII
1769 device miibus # MII support w/ bit-bang'ing and all PHYs
1771 device acphy # Altima Communications AC101
1772 device amphy # AMD AM79c873 / Davicom DM910{1,2}
1773 device atphy # Attansic/Atheros F1
1774 device axphy # Asix Semiconductor AX88x9x
1775 device bmtphy # Broadcom BCM5201/BCM5202 and 3Com 3c905C
1776 device bnxt # Broadcom NetXtreme-C/NetXtreme-E
1777 device brgphy # Broadcom BCM54xx/57xx 1000baseTX
1778 device ciphy # Cicada/Vitesse CS/VSC8xxx
1779 device e1000phy # Marvell 88E1000 1000/100/10-BT
1780 device gentbi # Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
1781 device icsphy # ICS ICS1889-1893
1782 device ip1000phy # IC Plus IP1000A/IP1001
1783 device jmphy # JMicron JMP211/JMP202
1784 device lxtphy # Level One LXT-970
1785 device mlphy # Micro Linear 6692
1786 device nsgphy # NatSemi DP8361/DP83865/DP83891
1787 device nsphy # NatSemi DP83840A
1788 device nsphyter # NatSemi DP83843/DP83815
1789 device pnaphy # HomePNA
1790 device qsphy # Quality Semiconductor QS6612
1791 device rdcphy # RDC Semiconductor R6040
1792 device rgephy # RealTek 8169S/8110S/8211B/8211C
1793 device rlphy # RealTek 8139
1794 device rlswitch # RealTek 8305
1795 device smcphy # SMSC LAN91C111
1796 device tdkphy # TDK 89Q2120
1797 device tlphy # Texas Instruments ThunderLAN
1798 device truephy # LSI TruePHY
1799 device xmphy # XaQti XMAC II
1801 # an: Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
1802 # PCI and ISA varieties.
1803 # ae: Support for gigabit ethernet adapters based on the Attansic/Atheros
1804 # L2 PCI-Express FastEthernet controllers.
1805 # age: Support for gigabit ethernet adapters based on the Attansic/Atheros
1806 # L1 PCI express gigabit ethernet controllers.
1807 # alc: Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
1808 # ale: Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
1809 # ath: Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
1810 # bce: Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
1812 # bfe: Broadcom BCM4401 Ethernet adapter.
1813 # bge: Support for gigabit ethernet adapters based on the Broadcom
1814 # BCM570x family of controllers, including the 3Com 3c996-T,
1815 # the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1816 # the embedded gigE NICs on Dell PowerEdge 2550 servers.
1817 # bnxt: Broadcom NetXtreme-C and NetXtreme-E PCIe 10/25/50G Ethernet adapters.
1818 # bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
1820 # bwi: Broadcom BCM430* and BCM431* family of wireless adapters.
1821 # bwn: Broadcom BCM43xx family of wireless adapters.
1822 # cas: Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
1823 # cxgb: Chelsio T3 based 1GbE/10GbE PCIe Ethernet adapters.
1824 # cxgbe:Chelsio T4, T5, and T6-based 1/10/25/40/100GbE PCIe Ethernet
1826 # cxgbev: Chelsio T4, T5, and T6-based PCIe Virtual Functions.
1827 # dc: Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1828 # and various workalikes including:
1829 # the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1830 # AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1831 # 82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1832 # and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1833 # replaces the old al, ax, dm, pn and mx drivers. List of brands:
1834 # Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1835 # SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1836 # LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1838 # em: Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1839 # fxp: Intel EtherExpress Pro/100B
1840 # (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
1841 # gem: Apple GMAC/Sun ERI/Sun GEM
1842 # hme: Sun HME (Happy Meal Ethernet)
1843 # jme: JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
1844 # le: AMD Am7900 LANCE and Am79C9xx PCnet
1845 # lge: Support for PCI gigabit ethernet adapters based on the Level 1
1846 # LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1847 # SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1848 # lio: Support for Cavium 23XX Ethernet adapters
1849 # malo: Marvell Libertas wireless NICs.
1850 # mwl: Marvell 88W8363 802.11n wireless NICs.
1851 # Requires the mwl firmware module
1852 # mwlfw: Marvell 88W8363 firmware
1853 # msk: Support for gigabit ethernet adapters based on the Marvell/SysKonnect
1854 # Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
1855 # 88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
1856 # 88E8055, 88E8056 and D-Link 560T/550SX.
1857 # mlxfw: Mellanox firmware update module.
1858 # mlx5: Mellanox ConnectX-4 and ConnectX-4 LX IB and Eth shared code module.
1859 # mlx5en:Mellanox ConnectX-4 and ConnectX-4 LX PCIe Ethernet adapters.
1860 # my: Myson Fast Ethernet (MTD80X, MTD89X)
1861 # nge: Support for PCI gigabit ethernet adapters based on the National
1862 # Semiconductor DP83820 and DP83821 chipset. This includes the
1863 # SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
1864 # GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
1865 # EP-320G-TX and the Netgear GA622T.
1866 # oce: Emulex 10 Gbit adapters (OneConnect Ethernet)
1867 # ral: Ralink Technology IEEE 802.11 wireless adapter
1868 # re: RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
1869 # rl: Support for PCI fast ethernet adapters based on the RealTek 8129/8139
1870 # chipset. Note that the RealTek driver defaults to using programmed
1871 # I/O to do register accesses because memory mapped mode seems to cause
1872 # severe lockups on SMP hardware. This driver also supports the
1873 # Accton EN1207D `Cheetah' adapter, which uses a chip called
1874 # the MPX 5030/5038, which is either a RealTek in disguise or a
1875 # RealTek workalike. Note that the D-Link DFE-530TX+ uses the RealTek
1876 # chipset and is supported by this driver, not the 'vr' driver.
1877 # rtwn: RealTek wireless adapters.
1878 # rtwnfw: RealTek wireless firmware.
1879 # sge: Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
1880 # sis: Support for NICs based on the Silicon Integrated Systems SiS 900,
1881 # SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
1882 # sk: Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
1883 # This includes the SK-9841 and SK-9842 single port cards (single mode
1884 # and multimode fiber) and the SK-9843 and SK-9844 dual port cards
1885 # (also single mode and multimode).
1886 # The driver will autodetect the number of ports on the card and
1887 # attach each one as a separate network interface.
1888 # ste: Sundance Technologies ST201 PCI fast ethernet controller, includes
1889 # the D-Link DFE-550TX.
1890 # stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
1891 # TC9021 family of controllers, including the Sundance ST2021/ST2023,
1892 # the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
1893 # ti: Support for PCI gigabit ethernet NICs based on the Alteon Networks
1894 # Tigon 1 and Tigon 2 chipsets. This includes the Alteon AceNIC, the
1895 # 3Com 3c985, the Netgear GA620 and various others. Note that you will
1896 # probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
1897 # vr: Support for various fast ethernet adapters based on the VIA
1898 # Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
1899 # including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
1900 # DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
1901 # vte: DM&P Vortex86 RDC R6040 Fast Ethernet
1902 # wi: Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
1903 # the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
1904 # bridge with a PCMCIA adapter plugged into it.
1905 # xl: Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
1906 # Etherlink XL cards and integrated controllers. This includes the
1907 # integrated 3c905B-TX chips in certain Dell Optiplex and Dell
1908 # Precision desktop machines and the integrated 3c905-TX chips
1909 # in Dell Latitude laptop docking stations.
1910 # Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
1912 # Order for ISA devices is important here
1917 # PCI Ethernet NICs that use the common MII bus controller code.
1918 device ae # Attansic/Atheros L2 FastEthernet
1919 device age # Attansic/Atheros L1 Gigabit Ethernet
1920 device alc # Atheros AR8131/AR8132 Ethernet
1921 device ale # Atheros AR8121/AR8113/AR8114 Ethernet
1922 device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet
1923 device bfe # Broadcom BCM440x 10/100 Ethernet
1924 device bge # Broadcom BCM570xx Gigabit Ethernet
1925 device cas # Sun Cassini/Cassini+ and NS DP83065 Saturn
1926 device dc # DEC/Intel 21143 and various workalikes
1927 device et # Agere ET1310 10/100/Gigabit Ethernet
1928 device fxp # Intel EtherExpress PRO/100B (82557, 82558)
1929 hint.fxp.0.prefer_iomap="0"
1930 device gem # Apple GMAC/Sun ERI/Sun GEM
1931 device hme # Sun HME (Happy Meal Ethernet)
1932 device jme # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
1933 device lge # Level 1 LXT1001 gigabit Ethernet
1934 device mlxfw # Mellanox firmware update module
1935 device mlx5 # Shared code module between IB and Ethernet
1936 device mlx5en # Mellanox ConnectX-4 and ConnectX-4 LX
1937 device msk # Marvell/SysKonnect Yukon II Gigabit Ethernet
1938 device my # Myson Fast Ethernet (MTD80X, MTD89X)
1939 device nge # NatSemi DP83820 gigabit Ethernet
1940 device re # RealTek 8139C+/8169/8169S/8110S
1941 device rl # RealTek 8129/8139
1942 device sge # Silicon Integrated Systems SiS190/191
1943 device sis # Silicon Integrated Systems SiS 900/SiS 7016
1944 device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
1945 device ste # Sundance ST201 (D-Link DFE-550TX)
1946 device stge # Sundance/Tamarack TC9021 gigabit Ethernet
1947 device vr # VIA Rhine, Rhine II
1948 device vte # DM&P Vortex86 RDC R6040 Fast Ethernet
1949 device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
1951 # PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
1953 device em # Intel Pro/1000 Gigabit Ethernet
1954 device ix # Intel Pro/10Gbe PCIE Ethernet
1955 device ixv # Intel Pro/10Gbe PCIE Ethernet VF
1957 # PCI Ethernet NICs.
1958 device cxgb # Chelsio T3 10 Gigabit Ethernet
1959 device cxgb_t3fw # Chelsio T3 10 Gigabit Ethernet firmware
1960 device cxgbe # Chelsio T4-T6 1/10/25/40/100 Gigabit Ethernet
1961 device cxgbev # Chelsio T4-T6 Virtual Functions
1962 device le # AMD Am7900 LANCE and Am79C9xx PCnet
1963 device mxge # Myricom Myri-10G 10GbE NIC
1964 device oce # Emulex 10 GbE (OneConnect Ethernet)
1965 device ti # Alteon Networks Tigon I/II gigabit Ethernet
1967 # PCI IEEE 802.11 Wireless NICs
1968 device ath # Atheros pci/cardbus NIC's
1969 device ath_hal # pci/cardbus chip support
1970 #device ath_ar5210 # AR5210 chips
1971 #device ath_ar5211 # AR5211 chips
1972 #device ath_ar5212 # AR5212 chips
1979 #device ath_ar5416 # AR5416 chips
1980 # All of the AR5212 parts have a problem when paired with the AR71xx
1981 # CPUS. These parts have a bug that triggers a fatal bus error on the AR71xx
1982 # only. Details of the exact nature of the bug are sketchy, but some can be
1983 # found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
1984 # 6. This option enables this workaround. There is a performance penalty
1985 # for this work around, but without it things don't work at all. The DMA
1986 # from the card usually bursts 128 bytes, but on the affected CPUs, only
1988 options AH_RXCFG_SDMAMW_4BYTES
1989 #device ath_ar9160 # AR9160 chips
1990 #device ath_ar9280 # AR9280 chips
1991 #device ath_ar9285 # AR9285 chips
1992 device ath_rate_sample # SampleRate tx rate control for ath
1993 device bwi # Broadcom BCM430* BCM431*
1994 device bwn # Broadcom BCM43xx
1995 device malo # Marvell Libertas wireless NICs.
1996 device mwl # Marvell 88W8363 802.11n wireless NICs.
1998 device ral # Ralink Technology RT2500 wireless NICs.
1999 device rtwn # Realtek wireless NICs
2002 # Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
2003 #options TI_SF_BUF_JUMBO
2004 # Turn on the header splitting option for the ti(4) driver firmware. This
2005 # only works for Tigon II chips, and has no effect for Tigon I chips.
2006 # This option requires the TI_SF_BUF_JUMBO option above.
2007 #options TI_JUMBO_HDRSPLIT
2009 # These two options allow manipulating the mbuf cluster size and mbuf size,
2010 # respectively. Be very careful with NIC driver modules when changing
2011 # these from their default values, because that can potentially cause a
2012 # mismatch between the mbuf size assumed by the kernel and the mbuf size
2013 # assumed by a module. The only driver that currently has the ability to
2014 # detect a mismatch is ti(4).
2015 options MCLSHIFT=12 # mbuf cluster shift in bits, 12 == 4KB
2016 options MSIZE=512 # mbuf size in bytes
2021 # sound: The generic sound driver.
2027 # snd_*: Device-specific drivers.
2029 # The flags of the device tell the device a bit more info about the
2030 # device that normally is obtained through the PnP interface.
2031 # bit 2..0 secondary DMA channel;
2032 # bit 4 set if the board uses two dma channels;
2033 # bit 15..8 board type, overrides autodetection; leave it
2034 # zero if don't know what to put in (and you don't,
2035 # since this is unsupported at the moment...).
2037 # snd_ad1816: Analog Devices AD1816 ISA PnP/non-PnP.
2038 # snd_als4000: Avance Logic ALS4000 PCI.
2039 # snd_atiixp: ATI IXP 200/300/400 PCI.
2040 # snd_audiocs: Crystal Semiconductor CS4231 SBus/EBus. Only
2042 # snd_cmi: CMedia CMI8338/CMI8738 PCI.
2043 # snd_cs4281: Crystal Semiconductor CS4281 PCI.
2044 # snd_csa: Crystal Semiconductor CS461x/428x PCI. (except
2046 # snd_ds1: Yamaha DS-1 PCI.
2047 # snd_emu10k1: Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
2048 # snd_emu10kx: Creative SoundBlaster Live! and Audigy
2049 # snd_envy24: VIA Envy24 and compatible, needs snd_spicds.
2050 # snd_envy24ht: VIA Envy24HT and compatible, needs snd_spicds.
2051 # snd_es137x: Ensoniq AudioPCI ES137x PCI.
2052 # snd_ess: Ensoniq ESS ISA PnP/non-PnP, to be used in
2053 # conjunction with snd_sbc.
2054 # snd_fm801: Forte Media FM801 PCI.
2055 # snd_gusc: Gravis UltraSound ISA PnP/non-PnP.
2056 # snd_hda: Intel High Definition Audio (Controller) and
2058 # snd_hdspe: RME HDSPe AIO and RayDAT.
2059 # snd_ich: Intel ICH AC'97 and some more audio controllers
2060 # embedded in a chipset, for example nVidia
2061 # nForce controllers.
2062 # snd_maestro: ESS Technology Maestro-1/2x PCI.
2063 # snd_maestro3: ESS Technology Maestro-3/Allegro PCI.
2064 # snd_mss: Microsoft Sound System ISA PnP/non-PnP.
2065 # snd_neomagic: Neomagic 256 AV/ZX PCI.
2066 # snd_sb16: Creative SoundBlaster16, to be used in
2067 # conjunction with snd_sbc.
2068 # snd_sb8: Creative SoundBlaster (pre-16), to be used in
2069 # conjunction with snd_sbc.
2070 # snd_sbc: Creative SoundBlaster ISA PnP/non-PnP.
2071 # Supports ESS and Avance ISA chips as well.
2072 # snd_solo: ESS Solo-1x PCI.
2073 # snd_spicds: SPI codec driver, needed by Envy24/Envy24HT drivers.
2074 # snd_t4dwave: Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
2076 # snd_uaudio: USB audio.
2077 # snd_via8233: VIA VT8233x PCI.
2078 # snd_via82c686: VIA VT82C686A PCI.
2079 # snd_vibes: S3 Sonicvibes PCI.
2112 device snd_via82c686
2115 # For non-PnP sound cards:
2119 hint.pcm.0.flags="0x0"
2121 hint.sbc.0.port="0x220"
2124 hint.sbc.0.flags="0x15"
2125 hint.gusc.0.at="isa"
2126 hint.gusc.0.port="0x220"
2129 hint.gusc.0.flags="0x13"
2132 # Following options are intended for debugging/testing purposes:
2134 # SND_DEBUG Enable extra debugging code that includes
2135 # sanity checking and possible increase of
2138 # SND_DIAGNOSTIC Similar in a spirit of INVARIANTS/DIAGNOSTIC,
2139 # zero tolerance against inconsistencies.
2141 # SND_FEEDER_MULTIFORMAT By default, only 16/32 bit feeders are compiled
2142 # in. This options enable most feeder converters
2143 # except for 8bit. WARNING: May bloat the kernel.
2145 # SND_FEEDER_FULL_MULTIFORMAT Ditto, but includes 8bit feeders as well.
2147 # SND_FEEDER_RATE_HP (feeder_rate) High precision 64bit arithmetic
2148 # as much as possible (the default trying to
2149 # avoid it). Possible slowdown.
2151 # SND_PCM_64 (Only applicable for i386/32bit arch)
2152 # Process 32bit samples through 64bit
2153 # integer/arithmetic. Slight increase of dynamic
2154 # range at a cost of possible slowdown.
2156 # SND_OLDSTEREO Only 2 channels are allowed, effectively
2157 # disabling multichannel processing.
2160 options SND_DIAGNOSTIC
2161 options SND_FEEDER_MULTIFORMAT
2162 options SND_FEEDER_FULL_MULTIFORMAT
2163 options SND_FEEDER_RATE_HP
2165 options SND_OLDSTEREO
2168 # Miscellaneous hardware:
2170 # bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
2171 # cmx: OmniKey CardMan 4040 pccard smartcard reader
2176 # The 'bktr' device is a PCI video capture device using the Brooktree
2177 # bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
2178 # TV card, e.g. Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
2179 # Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
2181 # options OVERRIDE_CARD=xxx
2182 # options OVERRIDE_TUNER=xxx
2183 # options OVERRIDE_MSP=1
2184 # options OVERRIDE_DBX=1
2185 # These options can be used to override the auto detection
2186 # The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
2187 # Using sysctl(8) run-time overrides on a per-card basis can be made
2189 # options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
2191 # options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
2192 # Specifies the default video capture mode.
2193 # This is required for Dual Crystal (28&35MHz) boards where PAL is used
2194 # to prevent hangs during initialization, e.g. VideoLogic Captivator PCI.
2196 # options BKTR_USE_PLL
2197 # This is required for PAL or SECAM boards with a 28MHz crystal and no 35MHz
2198 # crystal, e.g. some new Bt878 cards.
2200 # options BKTR_GPIO_ACCESS
2201 # This enables IOCTLs which give user level access to the GPIO port.
2203 # options BKTR_NO_MSP_RESET
2204 # Prevents the MSP34xx reset. Good if you initialize the MSP in another OS first
2206 # options BKTR_430_FX_MODE
2207 # Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
2209 # options BKTR_SIS_VIA_MODE
2210 # Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
2211 # needed for some old SiS and VIA chipset motherboards.
2212 # This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
2213 # motherboards and motherboards with bad or incomplete PCI 2.1 support.
2214 # As a rough guess, old = before 1998
2216 # options BKTR_NEW_MSP34XX_DRIVER
2217 # Use new, more complete initialization scheme for the msp34* soundchip.
2218 # Should fix stereo autodetection if the old driver does only output
2222 # options BKTR_USE_FREEBSD_SMBUS
2223 # Compile with FreeBSD SMBus implementation
2225 # Brooktree driver has been ported to the new I2C framework. Thus,
2226 # you'll need to have the following 3 lines in the kernel config.
2231 # The iic and smb devices are only needed if you want to control other
2232 # I2C slaves connected to the external connector of some cards.
2237 # PC Card/PCMCIA and Cardbus
2239 # cbb: pci/cardbus bridge implementing YENTA interface
2240 # pccard: pccard slots
2241 # cardbus: cardbus slots
2250 # mmcsd MMC/SD memory card
2251 # sdhci Generic PCI SD Host Controller
2260 # System Management Bus support is provided by the 'smbus' device.
2261 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
2262 # which is a child of the 'smbus' device.
2264 # Supported devices:
2265 # smb standard I/O through /dev/smb*
2267 # Supported SMB interfaces:
2268 # iicsmb I2C to SMB bridge with any iicbus interface
2269 # bktr brooktree848 I2C hardware interface
2270 # intpm Intel PIIX4 (82371AB, 82443MX) Power Management Unit
2271 # alpm Acer Aladdin-IV/V/Pro2 Power Management Unit
2272 # ichsmb Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
2273 # viapm VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2274 # amdpm AMD 756 Power Management Unit
2275 # amdsmb AMD 8111 SMBus 2.0 Controller
2276 # nfpm NVIDIA nForce Power Management Unit
2277 # nfsmb NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
2278 # ismt Intel SMBus 2.0 controller chips (on Atom S1200, C2000)
2280 device smbus # Bus support, required for smb below.
2294 # SMBus peripheral devices
2296 # jedec_dimm Asset and temperature reporting for DDR3 and DDR4 DIMMs
2302 # Philips i2c bus support is provided by the `iicbus' device.
2304 # Supported devices:
2305 # ic i2c network interface
2306 # iic i2c standard io
2307 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
2308 # iicoc simple polling driver for OpenCores I2C controller
2310 # Supported interfaces:
2311 # bktr brooktree848 I2C software interface
2314 # iicbb generic I2C bit-banging code (needed by lpbb, bktr)
2316 device iicbus # Bus support, required for ic/iic/iicsmb below.
2321 device iicsmb # smb over i2c bridge
2322 device iicoc # OpenCores I2C controller support
2324 # I2C peripheral devices
2326 device ad7418 # Analog Devices temp and voltage sensor
2327 device ads111x # Texas Instruments ADS101x and ADS111x ADCs
2328 device ds1307 # Dallas DS1307 RTC and compatible
2329 device ds13rtc # All Dallas/Maxim ds13xx chips
2330 device ds1672 # Dallas DS1672 RTC
2331 device ds3231 # Dallas DS3231 RTC + temperature
2332 device icee # AT24Cxxx and compatible EEPROMs
2333 device isl12xx # Intersil ISL12xx RTC
2334 device lm75 # LM75 compatible temperature sensor
2335 device nxprtc # NXP RTCs: PCA/PFC212x PCA/PCF85xx
2336 device rtc8583 # Epson RTC-8583
2337 device s35390a # Seiko Instruments S-35390A RTC
2338 device sy8106a # Silergy Corp. SY8106A buck regulator
2339 device syr827 # Silergy Corp. DC/DC regulator
2343 # Parallel port bus support is provided by the `ppbus' device.
2344 # Multiple devices may be attached to the parallel port, devices
2345 # are automatically probed and attached when found.
2347 # Supported devices:
2348 # vpo Iomega Zip Drive
2349 # Requires SCSI disk support ('scbus' and 'da'), best
2350 # performance is achieved with ports in EPP 1.9 mode.
2351 # lpt Parallel Printer
2352 # plip Parallel network interface
2353 # ppi General-purpose I/O ("Geek Port") + IEEE1284 I/O
2354 # pps Pulse per second Timing Interface
2355 # lpbb Philips official parallel port I2C bit-banging interface
2356 # pcfclock Parallel port clock driver.
2358 # Supported interfaces:
2359 # ppc ISA-bus parallel port interfaces.
2362 options PPC_PROBE_CHIPSET # Enable chipset specific detection
2363 # (see flags in ppc(4))
2364 options DEBUG_1284 # IEEE1284 signaling protocol debug
2365 options PERIPH_1284 # Makes your computer act as an IEEE1284
2366 # compliant peripheral
2367 options DONTPROBE_1284 # Avoid boot detection of PnP parallel devices
2368 options VP0_DEBUG # ZIP/ZIP+ debug
2369 options LPT_DEBUG # Printer driver debug
2370 options PPC_DEBUG # Parallel chipset level debug
2371 options PLIP_DEBUG # Parallel network IP interface debug
2372 options PCFCLOCK_VERBOSE # Verbose pcfclock driver
2373 options PCFCLOCK_MAX_RETRIES=5 # Maximum read tries (default 10)
2387 # General Purpose I/O pins
2388 device dwgpio # Synopsys DesignWare APB GPIO Controller
2389 device gpio # gpio interfaces and bus support
2390 device gpiobacklight # sysctl control of gpio-based backlight
2391 device gpioiic # i2c via gpio bitbang
2392 device gpiokeys # kbd(4) glue for gpio-based key input
2393 device gpioled # led(4) gpio glue
2394 device gpiopower # event handler for gpio-based powerdown
2395 device gpiopps # Pulse per second input from gpio pin
2396 device gpioregulator # extres/regulator glue for gpio pin
2397 device gpiospi # SPI via gpio bitbang
2398 device gpioths # 1-wire temp/humidity sensor on gpio pin
2400 # Pulse width modulation
2401 device pwmbus # pwm interface and bus support
2402 device pwmc # userland control access to pwm outputs
2405 # Etherswitch framework and drivers
2407 # etherswitch The etherswitch(4) framework
2408 # miiproxy Proxy device for miibus(4) functionality
2410 # Switch hardware support:
2411 # arswitch Atheros switches
2412 # ip17x IC+ 17x family switches
2413 # rtl8366r Realtek RTL8366 switches
2414 # ukswitch Multi-PHY switches
2423 # Kernel BOOTP support
2425 options BOOTP # Use BOOTP to obtain IP address/hostname
2426 # Requires NFSCL and NFS_ROOT
2427 options BOOTP_NFSROOT # NFS mount root filesystem using BOOTP info
2428 options BOOTP_NFSV3 # Use NFS v3 to NFS mount root
2429 options BOOTP_COMPAT # Workaround for broken bootp daemons.
2430 options BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2431 options BOOTP_BLOCKSIZE=8192 # Override NFS block size
2434 # Enable software watchdog routines, even if hardware watchdog is present.
2435 # By default, software watchdog timer is enabled only if no hardware watchdog
2441 # Add the software deadlock resolver thread.
2446 # Disable swapping of stack pages. This option removes all
2447 # code which actually performs swapping, so it's not possible to turn
2448 # it back on at run-time.
2450 # This is sometimes usable for systems which don't have any swap space
2451 # (see also sysctl "vm.disable_swapspace_pageouts")
2453 #options NO_SWAPPING
2455 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
2456 # for sendfile(2) that are used to map file VM pages, and normally
2457 # default to a quantity that is roughly 16*MAXUSERS+512. You would
2458 # typically want about 4 of these for each simultaneous file send.
2460 options NSFBUFS=1024
2463 # Enable extra debugging code for locks. This stores the filename and
2464 # line of whatever acquired the lock in the lock itself, and changes a
2465 # number of function calls to pass around the relevant data. This is
2466 # not at all useful unless you are debugging lock code. Note that
2467 # modules should be recompiled as this option modifies KBI.
2472 #####################################################################
2484 # General USB code (mandatory for USB)
2487 # USB Double Bulk Pipe devices
2491 # USB temperature meter
2495 # Human Interface Device (anything with buttons and dials)
2501 # USB mass storage driver (Requires scbus and da)
2503 # USB mass storage driver for device-side mode
2505 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
2514 # eGalax USB touch screen
2516 # Diamond Rio 500 MP3 player
2519 # USB serial support
2521 # USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
2523 # USB support for Technologies ARK3116 based serial adapters
2525 # USB support for Belkin F5U103 and compatible serial adapters
2527 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
2529 # USB support for some Windows CE based serial communication.
2531 # USB support for Prolific PL-2303 serial adapters
2533 # USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
2535 # USB Visor and Palm devices
2537 # USB serial support for DDI pocket's PHS
2540 # USB ethernet support
2542 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
2543 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2544 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2548 # ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2549 # LinkSys USB200M and various other adapters.
2551 # ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
2555 # Devices which communicate using Ethernet over USB, particularly
2556 # Communication Device Class (CDC) Ethernet specification. Supports
2557 # Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
2560 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
2561 # and Netmate II, and the Belkin F5U111.
2564 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2565 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2566 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
2567 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
2568 # and 2104USB, and the Corega USB-T.
2571 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
2572 # and the GREEN HOUSE GH-USB100B.
2575 # Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2578 # RealTek RTL8152/RTL8153 USB Ethernet driver
2581 # Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
2584 # HSxPA devices from Option N.V
2587 # Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
2590 # Ralink Technology RT2501USB/RT2601USB wireless driver
2592 # Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
2595 # Atheros AR5523 wireless driver
2598 # Conexant/Intersil PrismGT wireless driver
2601 # Ralink Technology RT2500USB wireless driver
2604 # RNDIS USB ethernet driver
2606 # Realtek RTL8187B/L wireless driver
2609 # ZyDas ZD1211/ZD1211B wireless driver
2612 # Sierra USB wireless driver
2616 # debugging options for the USB subsystem
2622 options UKBD_DFLT_KEYMAP # specify the built-in keymap
2623 makeoptions UKBD_DFLT_KEYMAP=jp.106
2625 # options for uplcom:
2626 options UPLCOM_INTR_INTERVAL=100 # interrupt pipe interval
2629 # options for uvscom:
2630 options UVSCOM_DEFAULT_OPKTSIZE=8 # default output packet size
2631 options UVSCOM_INTR_INTERVAL=100 # interrupt pipe interval
2634 #####################################################################
2637 device firewire # FireWire bus code
2638 device sbp # SCSI over Firewire (Requires scbus and da)
2639 device sbp_targ # SBP-2 Target mode (Requires scbus and targ)
2640 device fwe # Ethernet over FireWire (non-standard!)
2641 device fwip # IP over FireWire (RFC2734 and RFC3146)
2643 #####################################################################
2644 # dcons support (Dumb Console Device)
2646 device dcons # dumb console driver
2647 device dcons_crom # FireWire attachment
2648 options DCONS_BUF_SIZE=16384 # buffer size
2649 options DCONS_POLL_HZ=100 # polling rate
2650 options DCONS_FORCE_CONSOLE=0 # force to be the primary console
2651 options DCONS_FORCE_GDB=1 # force to be the gdb device
2653 #####################################################################
2656 # This is a port of the OpenBSD crypto framework. Include this when
2657 # configuring IPSEC and when you have a h/w crypto device to accelerate
2658 # user applications that link to OpenSSL.
2660 # Drivers are ports from OpenBSD with some simple enhancements that have
2661 # been fed back to OpenBSD.
2663 device crypto # core crypto support
2665 # Only install the cryptodev device if you are running tests, or know
2666 # specifically why you need it. In most cases, it is not needed and
2667 # will make things slower.
2668 device cryptodev # /dev/crypto for access to h/w
2670 device rndtest # FIPS 140-2 entropy tester
2672 device ccr # Chelsio T6
2674 device hifn # Hifn 7951, 7781, etc.
2675 options HIFN_DEBUG # enable debugging support: hw.hifn.debug
2676 options HIFN_RNDTEST # enable rndtest support
2678 device ubsec # Broadcom 5501, 5601, 58xx
2679 options UBSEC_DEBUG # enable debugging support: hw.ubsec.debug
2680 options UBSEC_RNDTEST # enable rndtest support
2682 #####################################################################
2686 # Embedded system options:
2688 # An embedded system might want to run something other than init.
2689 options INIT_PATH=/sbin/init:/rescue/init
2692 options BUS_DEBUG # enable newbus debugging
2693 options DEBUG_VFS_LOCKS # enable VFS lock debugging
2694 options SOCKBUF_DEBUG # enable sockbuf last record/mb tail checking
2695 options IFMEDIA_DEBUG # enable debugging in net/if_media.c
2700 # Make the SYSINIT process performed by mi_startup() verbose. This is very
2701 # useful when porting to a new architecture. If DDB is also enabled, this
2702 # will print function names instead of addresses. If defined with a value
2703 # of zero, the verbose code is compiled-in but disabled by default, and can
2704 # be enabled with the debug.verbose_sysinit=1 tunable.
2705 options VERBOSE_SYSINIT
2707 #####################################################################
2708 # SYSV IPC KERNEL PARAMETERS
2710 # Maximum number of System V semaphores that can be used on the system at
2714 # Total number of semaphores system wide
2717 # Total number of undo structures in system
2720 # Maximum number of System V semaphores that can be used by a single process
2724 # Maximum number of operations that can be outstanding on a single System V
2725 # semaphore at one time.
2728 # Maximum number of undo operations that can be outstanding on a single
2729 # System V semaphore at one time.
2732 # Maximum number of shared memory pages system wide.
2735 # Maximum size, in bytes, of a single System V shared memory region.
2736 options SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2737 options SHMMAXPGS=1025
2739 # Minimum size, in bytes, of a single System V shared memory region.
2742 # Maximum number of shared memory regions that can be used on the system
2746 # Maximum number of System V shared memory regions that can be attached to
2747 # a single process at one time.
2750 # Set the amount of time (in seconds) the system will wait before
2751 # rebooting automatically when a kernel panic occurs. If set to (-1),
2752 # the system will wait indefinitely until a key is pressed on the
2754 options PANIC_REBOOT_WAIT_TIME=16
2756 # Attempt to bypass the buffer cache and put data directly into the
2757 # userland buffer for read operation when O_DIRECT flag is set on the
2758 # file. Both offset and length of the read operation must be
2759 # multiples of the physical media sector size.
2763 # Specify a lower limit for the number of swap I/O buffers. They are
2764 # (among other things) used when bypassing the buffer cache due to
2765 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
2767 options NSWBUF_MIN=120
2769 #####################################################################
2771 # More undocumented options for linting.
2772 # Note that documenting these is not considered an affront.
2774 options CAM_DEBUG_DELAY
2776 # VFS cluster debugging.
2777 options CLUSTERDEBUG
2781 # Kernel filelock debugging.
2784 # System V compatible message queues
2785 # Please note that the values provided here are used to test kernel
2786 # building. The defaults in the sources provide almost the same numbers.
2787 # MSGSSZ must be a power of 2 between 8 and 1024.
2788 options MSGMNB=2049 # Max number of chars in queue
2789 options MSGMNI=41 # Max number of message queue identifiers
2790 options MSGSEG=2049 # Max number of message segments
2791 options MSGSSZ=16 # Size of a message segment
2792 options MSGTQL=41 # Max number of messages in system
2794 options NBUF=512 # Number of buffer headers
2796 options SC_DEBUG_LEVEL=5 # Syscons debug level
2797 options SC_RENDER_DEBUG # syscons rendering debugging
2799 options VFS_BIO_DEBUG # VFS buffer I/O debugging
2801 options KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
2802 options KSTACK_USAGE_PROF
2804 # Adaptec Array Controller driver options
2805 options AAC_DEBUG # Debugging levels:
2806 # 0 - quiet, only emit warnings
2807 # 1 - noisy, emit major function
2808 # points and things done
2809 # 2 - extremely noisy, emit trace
2810 # items in loops, etc.
2812 # Resource Accounting
2818 # Yet more undocumented options for linting.
2819 # BKTR_ALLOC_PAGES has no effect except to cause warnings, and
2820 # BROOKTREE_ALLOC_PAGES hasn't actually been superseded by it, since the
2821 # driver still mostly spells this option BROOKTREE_ALLOC_PAGES.
2822 ##options BKTR_ALLOC_PAGES=(217*4+1)
2823 options BROOKTREE_ALLOC_PAGES=(217*4+1)
2824 options MAXFILES=999
2826 # Random number generator
2827 # Allow the CSPRNG algorithm to be loaded as a module.
2828 #options RANDOM_LOADABLE
2829 # Select this to allow high-rate but potentially expensive
2830 # harvesting of Slab-Allocator entropy. In very high-rate
2831 # situations the value of doing this is dubious at best.
2832 options RANDOM_ENABLE_UMA # slab allocator
2834 # Select this to allow high-rate but potentially expensive
2835 # harvesting of of the m_next pointer in the mbuf. Note that
2836 # the m_next pointer is NULL except when receiving > 4K
2837 # jumbo frames or sustained bursts by way of LRO. Thus in
2838 # the common case it is stirring zero in to the entropy
2839 # pool. In cases where it is not NULL it is pointing to one
2840 # of a small (in the thousands to 10s of thousands) number
2841 # of 256 byte aligned mbufs. Hence it is, even in the best
2842 # case, a poor source of entropy. And in the absence of actual
2843 # runtime analysis of entropy collection may mislead the user in
2844 # to believe that substantially more entropy is being collected
2845 # than in fact is - leading to a different class of security
2846 # risk. In high packet rate situations ethernet entropy
2847 # collection is also very expensive, possibly leading to as
2848 # much as a 50% drop in packets received.
2849 # This option is present to maintain backwards compatibility
2850 # if desired, however it cannot be recommended for use in any
2852 options RANDOM_ENABLE_ETHER # ether_input
2854 # Module to enable execution of application via emulators like QEMU
2855 options IMAGACT_BINMISC
2857 # zlib I/O stream support
2858 # This enables support for compressed core dumps.
2862 # This enables support for Zstd compressed core dumps and GEOM_UZIP images.
2866 options BHND_LOGLEVEL # Logging threshold level
2869 device evdev # input event device support
2870 options EVDEV_SUPPORT # evdev support in legacy drivers
2871 options EVDEV_DEBUG # enable event debug msgs
2872 device uinput # install /dev/uinput cdev
2873 options UINPUT_DEBUG # enable uinput debug msgs
2875 # Encrypted kernel crash dumps.
2878 # Serial Peripheral Interface (SPI) support.
2879 device spibus # Bus support.
2880 device at45d # DataFlash driver
2882 device mx25l # SPIFlash driver
2884 device spigen # Generic access to SPI devices from userland.
2885 # Enable legacy /dev/spigenN name aliases for /dev/spigenX.Y devices.
2886 options SPIGEN_LEGACY_CDEVNAME # legacy device names for spigen
2888 # Compression supports.
2889 device zlib # gzip/zlib compression/decompression library
2890 device xz # xz_embedded LZMA de-compression library