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 'envvar hint.' should go into your hints file.
10 # 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 accommodate. 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_GPT # GPT partitioning
175 options GEOM_PART_LDM # Logical Disk Manager
176 options GEOM_PART_MBR # MBR partitioning
177 options GEOM_PART_VTOC8 # SMI VTOC8 disk label
178 options GEOM_RAID # Soft RAID functionality.
179 options GEOM_RAID3 # RAID3 functionality.
180 options GEOM_SHSEC # Shared secret.
181 options GEOM_STRIPE # Disk striping.
182 options GEOM_UZIP # Read-only compressed disks
183 options GEOM_VINUM # Vinum logical volume manager
184 options GEOM_VIRSTOR # Virtual storage.
185 options GEOM_ZERO # Performance testing helper.
188 # The root device and filesystem type can be compiled in;
189 # this provides a fallback option if the root device cannot
190 # be correctly guessed by the bootstrap code, or an override if
191 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
193 options ROOTDEVNAME=\"ufs:da0s2e\"
196 #####################################################################
199 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory. These options
200 # select which scheduler is compiled in.
202 # SCHED_4BSD is the historical, proven, BSD scheduler. It has a global run
203 # queue and no CPU affinity which makes it suboptimal for SMP. It has very
204 # good interactivity and priority selection.
206 # SCHED_ULE provides significant performance advantages over 4BSD on many
207 # workloads on SMP machines. It supports cpu-affinity, per-cpu runqueues
208 # and scheduler locks. It also has a stronger notion of interactivity
209 # which leads to better responsiveness even on uniprocessor machines. This
210 # is the default scheduler.
212 # SCHED_STATS is a debugging option which keeps some stats in the sysctl
213 # tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
219 #####################################################################
222 # SMP enables building of a Symmetric MultiProcessor Kernel.
225 options SMP # Symmetric MultiProcessor Kernel
227 # EARLY_AP_STARTUP releases the Application Processors earlier in the
228 # kernel startup process (before devices are probed) rather than at the
229 # end. This is a temporary option for use during the transition from
230 # late to early AP startup.
231 options EARLY_AP_STARTUP
233 # MAXCPU defines the maximum number of CPUs that can boot in the system.
234 # A default value should be already present, for every architecture.
237 # NUMA enables use of Non-Uniform Memory Access policies in various kernel
241 # MAXMEMDOM defines the maximum number of memory domains that can boot in the
242 # system. A default value should already be defined by every architecture.
245 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
246 # if the thread that currently owns the mutex is executing on another
247 # CPU. This behavior is enabled by default, so this option can be used
249 options NO_ADAPTIVE_MUTEXES
251 # ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
252 # if the thread that currently owns the rwlock is executing on another
253 # CPU. This behavior is enabled by default, so this option can be used
255 options NO_ADAPTIVE_RWLOCKS
257 # ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
258 # currently owns the sx lock is executing on another CPU.
259 # This behavior is enabled by default, so this option can be used to
261 options NO_ADAPTIVE_SX
263 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
264 # operation rather than inlining the simple cases. This can be used to
265 # shrink the size of the kernel text segment. Note that this behavior is
266 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
267 # and WITNESS options.
268 options MUTEX_NOINLINE
270 # RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
271 # operation rather than inlining the simple cases. This can be used to
272 # shrink the size of the kernel text segment. Note that this behavior is
273 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
274 # and WITNESS options.
275 options RWLOCK_NOINLINE
277 # SX_NOINLINE forces sx lock operations to call functions to perform each
278 # operation rather than inlining the simple cases. This can be used to
279 # shrink the size of the kernel text segment. Note that this behavior is
280 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
281 # and WITNESS options.
284 # SMP Debugging Options:
286 # CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
287 # structure used as backend in callout(9).
288 # PREEMPTION allows the threads that are in the kernel to be preempted by
289 # higher priority [interrupt] threads. It helps with interactivity
290 # and allows interrupt threads to run sooner rather than waiting.
291 # FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
292 # threads. Its sole use is to expose race conditions and other
293 # bugs during development. Enabling this option will reduce
294 # performance and increase the frequency of kernel panics by
295 # design. If you aren't sure that you need it then you don't.
296 # Relies on the PREEMPTION option. DON'T TURN THIS ON.
297 # SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
298 # used to hold active sleep queues as well as sleep wait message
300 # TURNSTILE_PROFILING enables rudimentary profiling of the hash table
301 # used to hold active lock queues.
302 # UMTX_PROFILING enables rudimentary profiling of the hash table used
303 # to hold active lock queues.
304 # WITNESS enables the witness code which detects deadlocks and cycles
305 # during locking operations.
306 # WITNESS_KDB causes the witness code to drop into the kernel debugger if
307 # a lock hierarchy violation occurs or if locks are held when going to
309 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
311 options FULL_PREEMPTION
314 options WITNESS_SKIPSPIN
316 # LOCK_PROFILING - Profiling locks. See LOCK_PROFILING(9) for details.
317 options LOCK_PROFILING
318 # Set the number of buffers and the hash size. The hash size MUST be larger
319 # than the number of buffers. Hash size should be prime.
320 options MPROF_BUFFERS="1536"
321 options MPROF_HASH_SIZE="1543"
323 # Profiling for the callout(9) backend.
324 options CALLOUT_PROFILING
326 # Profiling for internal hash tables.
327 options SLEEPQUEUE_PROFILING
328 options TURNSTILE_PROFILING
329 options UMTX_PROFILING
331 # Debugging traces for epoch(9) misuse
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 FreeBSD13 compatibility syscalls
368 options COMPAT_FREEBSD13
370 # Enable Linux Kernel Programming Interface
371 options COMPAT_LINUXKPI
374 # These three options provide support for System V Interface
375 # Definition-style interprocess communication, in the form of shared
376 # memory, semaphores, and message queues, respectively.
383 #####################################################################
387 # Compile with kernel debugger related code.
392 # Print a stack trace of the current thread on the console for a panic.
397 # Don't enter the debugger for a panic. Intended for unattended operation
398 # where you may want to enter the debugger from the console, but still want
399 # the machine to recover from a panic.
401 options KDB_UNATTENDED
404 # Enable the ddb debugger backend.
409 # Print the numerical value of symbols in addition to the symbolic
415 # Enable the remote gdb debugger backend.
420 # Trashes list pointers when they become invalid (i.e., the element is
421 # removed from a list). Relatively inexpensive to enable.
423 options QUEUE_MACRO_DEBUG_TRASH
426 # Stores information about the last caller to modify the list object
427 # in the list object. Requires additional memory overhead.
429 #options QUEUE_MACRO_DEBUG_TRACE
432 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
433 # contents of the registered sysctl nodes on the console. It is disabled by
434 # default because it generates excessively verbose console output that can
435 # interfere with serial console operation.
440 # Enable textdump by default, this disables kernel core dumps.
442 options TEXTDUMP_PREFERRED
445 # Enable extra debug messages while performing textdumps.
447 options TEXTDUMP_VERBOSE
450 # NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
452 options NO_SYSCTL_DESCR
455 # MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
456 # allocations that are smaller than a page. The purpose is to isolate
457 # different malloc types into hash classes, so that any buffer
458 # overruns or use-after-free will usually only affect memory from
459 # malloc types in that hash class. This is purely a debugging tool;
460 # by varying the hash function and tracking which hash class was
461 # corrupted, the intersection of the hash classes from each instance
462 # will point to a single malloc type that is being misused. At this
463 # point inspection or memguard(9) can be used to catch the offending
466 options MALLOC_DEBUG_MAXZONES=8
469 # DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
470 # for the kernel used to detect modify-after-free scenarios. See the
471 # memguard(9) man page for more information on usage.
473 options DEBUG_MEMGUARD
476 # DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
479 options DEBUG_REDZONE
482 # EARLY_PRINTF enables support for calling a special printf (eprintf)
483 # very early in the kernel (before cn_init() has been called). This
484 # should only be used for debugging purposes early in boot. Normally,
485 # it is not defined. It is commented out here because this feature
486 # isn't generally available. And the required eputc() isn't defined.
488 #options EARLY_PRINTF
491 # KTRACE enables the system-call tracing facility ktrace(2). To be more
492 # SMP-friendly, KTRACE uses a worker thread to process most trace events
493 # asynchronously to the thread generating the event. This requires a
494 # pre-allocated store of objects representing trace events. The
495 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
496 # The size of the pool can be adjusted both at boottime and runtime via
497 # the kern.ktrace_request_pool tunable and sysctl.
499 options KTRACE #kernel tracing
500 options KTRACE_REQUEST_POOL=101
503 # KTR is a kernel tracing facility imported from BSD/OS. It is
504 # enabled with the KTR option. KTR_ENTRIES defines the number of
505 # entries in the circular trace buffer; it may be an arbitrary number.
506 # KTR_BOOT_ENTRIES defines the number of entries during the early boot,
507 # before malloc(9) is functional.
508 # KTR_COMPILE defines the mask of events to compile into the kernel as
509 # defined by the KTR_* constants in <sys/ktr.h>. KTR_MASK defines the
510 # initial value of the ktr_mask variable which determines at runtime
511 # what events to trace. KTR_CPUMASK determines which CPU's log
512 # events, with bit X corresponding to CPU X. The layout of the string
513 # passed as KTR_CPUMASK must match a series of bitmasks each of them
514 # separated by the "," character (ie:
515 # KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF). KTR_VERBOSE enables
516 # dumping of KTR events to the console by default. This functionality
517 # can be toggled via the debug.ktr_verbose sysctl and defaults to off
518 # if KTR_VERBOSE is not defined. See ktr(4) and ktrdump(8) for details.
521 options KTR_BOOT_ENTRIES=1024
522 options KTR_ENTRIES=(128*1024)
523 options KTR_COMPILE=(KTR_ALL)
524 options KTR_MASK=KTR_INTR
525 options KTR_CPUMASK=0x3
529 # ALQ(9) is a facility for the asynchronous queuing of records from the kernel
530 # to a vnode, and is employed by services such as ktr(4) to produce trace
531 # files based on a kernel event stream. Records are written asynchronously
532 # in a worker thread.
538 # The INVARIANTS option is used in a number of source files to enable
539 # extra sanity checking of internal structures. This support is not
540 # enabled by default because of the extra time it would take to check
541 # for these conditions, which can only occur as a result of
542 # programming errors.
547 # The INVARIANT_SUPPORT option makes us compile in support for
548 # verifying some of the internal structures. It is a prerequisite for
549 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
550 # called. The intent is that you can set 'INVARIANTS' for single
551 # source files (by changing the source file or specifying it on the
552 # command line) if you have 'INVARIANT_SUPPORT' enabled. Also, if you
553 # wish to build a kernel module with 'INVARIANTS', then adding
554 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
555 # infrastructure without the added overhead.
557 options INVARIANT_SUPPORT
560 # The KASSERT_PANIC_OPTIONAL option allows kasserts to fire without
561 # necessarily inducing a panic. Panic is the default behavior, but
562 # runtime options can configure it either entirely off, or off with a
565 options KASSERT_PANIC_OPTIONAL
568 # The DIAGNOSTIC option is used to enable extra debugging information
569 # and invariants checking. The added checks are too expensive or noisy
570 # for an INVARIANTS kernel and thus are disabled by default. It is
571 # expected that a kernel configured with DIAGNOSTIC will also have the
572 # INVARIANTS option enabled.
577 # REGRESSION causes optional kernel interfaces necessary only for regression
578 # testing to be enabled. These interfaces may constitute security risks
579 # when enabled, as they permit processes to easily modify aspects of the
580 # run-time environment to reproduce unlikely or unusual (possibly normally
581 # impossible) scenarios.
586 # This option lets some drivers co-exist that can't co-exist in a running
587 # system. This is used to be able to compile all kernel code in one go for
588 # quality assurance purposes (like this file, which the option takes it name
591 options COMPILING_LINT
594 # STACK enables the stack(9) facility, allowing the capture of kernel stack
595 # for the purpose of procinfo(1), etc. stack(9) will also be compiled in
596 # automatically if DDB(4) is compiled into the kernel.
601 # The NUM_CORE_FILES option specifies the limit for the number of core
602 # files generated by a particular process, when the core file format
603 # specifier includes the %I pattern. Since we only have 1 character for
604 # the core count in the format string, meaning the range will be 0-9, the
605 # maximum value allowed for this option is 10.
606 # This core file limit can be adjusted at runtime via the debug.ncores
609 options NUM_CORE_FILES=5
612 # The TSLOG option enables timestamped logging of events, especially
613 # function entries/exits, in order to track the time spent by the kernel.
614 # In particular, this is useful when investigating the early boot process,
615 # before it is possible to use more sophisticated tools like DTrace.
616 # The TSLOGSIZE option controls the size of the (preallocated, fixed
617 # length) buffer used for storing these events (default: 262144 records).
619 # For security reasons the TSLOG option should not be enabled on systems
620 # used in production.
623 options TSLOGSIZE=262144
626 #####################################################################
627 # PERFORMANCE MONITORING OPTIONS
630 # The hwpmc driver that allows the use of in-CPU performance monitoring
631 # counters for performance monitoring. The base kernel needs to be configured
632 # with the 'options' line, while the hwpmc device can be either compiled
633 # in or loaded as a loadable kernel module.
635 # Additional configuration options may be required on specific architectures,
636 # please see hwpmc(4).
638 device hwpmc # Driver (also a loadable module)
640 options HWPMC_HOOKS # Other necessary kernel hooks
643 #####################################################################
649 options INET #Internet communications protocols
650 options INET6 #IPv6 communications protocols
652 # Note if you include INET/INET6 or both options
653 # You *must* define at least one of the congestion control
654 # options or the compile will fail. GENERIC defines
655 # options CC_CUBIC. You may want to specify a default
656 # if multiple congestion controls are compiled in.
657 # The string in default is the name of the
658 # cc module as it would appear in the sysctl for
659 # setting the default. The code defines CUBIC
660 # as default, or the sole cc_module compiled in.
670 options CC_DEFAULT=\"cubic\"
671 options RATELIMIT # TX rate limiting support
673 options ROUTETABLES=2 # allocated fibs up to 65536. default is 1.
674 # but that would be a bad idea as they are large.
676 options TCP_OFFLOAD # TCP offload support.
677 options TCP_RFC7413 # TCP Fast Open
680 makeoptions WITH_EXTRA_TCP_STACKS=1 # RACK and BBR TCP kernel modules
682 # In order to enable IPSEC you MUST also add device crypto to
683 # your kernel configuration
684 options IPSEC #IP security (requires device crypto)
686 # Option IPSEC_SUPPORT does not enable IPsec, but makes it possible to
687 # load it as a kernel module. You still MUST add device crypto to your kernel
689 options IPSEC_SUPPORT
690 #options IPSEC_DEBUG #debug for IP security
693 # TLS framing and encryption/decryption of data over TCP sockets.
694 options KERN_TLS # TLS transmit and receive offload
696 # Netlink kernel/user<>kernel/user messaging interface
701 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
703 options NETSMB #SMB/CIFS requester
705 # mchain library. It can be either loaded as KLD or compiled into kernel
708 # libalias library, performing NAT
712 # SCTP is a NEW transport protocol defined by
713 # RFC2960 updated by RFC3309 and RFC3758.. and
714 # soon to have a new base RFC and many many more
715 # extensions. This release supports all the extensions
716 # including many drafts (most about to become RFC's).
717 # It is the reference implementation of SCTP
718 # and is quite well tested.
720 # Note YOU MUST have both INET and INET6 defined.
721 # You don't have to enable V6, but SCTP is
722 # dual stacked and so far we have not torn apart
723 # the V6 and V4.. since an association can span
724 # both a V6 and V4 address at the SAME time :-)
726 # The SCTP_SUPPORT option does not enable SCTP, but provides the necessary
727 # support for loading SCTP as a loadable kernel module.
732 # There are bunches of options:
733 # this one turns on all sorts of
734 # nastily printing that you can
735 # do. It's all controlled by a
736 # bit mask (settable by socket opt and
737 # by sysctl). Including will not cause
738 # logging until you set the bits.. but it
739 # can be quite verbose.. so without this
740 # option we don't do any of the tests for
741 # bits and prints.. which makes the code run
742 # faster.. if you are not debugging don't use.
746 # All that options after that turn on specific types of
747 # logging. You can monitor CWND growth, flight size
748 # and all sorts of things. Go look at the code and
749 # see. I have used this to produce interesting
750 # charts and graphs as well :->
752 # I have not yet committed the tools to get and print
753 # the logs, I will do that eventually .. before then
754 # if you want them send me an email rrs@freebsd.org
755 # You basically must have ktr(4) enabled for these
756 # and you then set the sysctl to turn on/off various
757 # logging bits. Use ktrdump(8) to pull the log and run
758 # it through a display program.. and graphs and other
761 options SCTP_LOCK_LOGGING
762 options SCTP_MBUF_LOGGING
763 options SCTP_MBCNT_LOGGING
764 options SCTP_PACKET_LOGGING
765 options SCTP_LTRACE_CHUNKS
766 options SCTP_LTRACE_ERRORS
768 # altq(9). Enable the base part of the hooks with the ALTQ option.
769 # Individual disciplines must be built into the base system and can not be
770 # loaded as modules at this point. ALTQ requires a stable TSC so if yours is
771 # broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
774 options ALTQ_CBQ # Class Based Queueing
775 options ALTQ_RED # Random Early Detection
776 options ALTQ_RIO # RED In/Out
777 options ALTQ_CODEL # CoDel Active Queueing
778 options ALTQ_HFSC # Hierarchical Packet Scheduler
779 options ALTQ_FAIRQ # Fair Packet Scheduler
780 options ALTQ_CDNR # Traffic conditioner
781 options ALTQ_PRIQ # Priority Queueing
782 options ALTQ_NOPCC # Required if the TSC is unusable
785 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
786 # Individual node types can be enabled with the corresponding option
787 # listed below; however, this is not strictly necessary as netgraph
788 # will automatically load the corresponding KLD module if the node type
789 # is not already compiled into the kernel. Each type below has a
790 # corresponding man page, e.g., ng_async(8).
791 options NETGRAPH # netgraph(4) system
792 options NETGRAPH_DEBUG # enable extra debugging, this
793 # affects netgraph(4) and nodes
795 options NETGRAPH_ASYNC
796 options NETGRAPH_ATMLLC
797 options NETGRAPH_ATM_ATMPIF
798 options NETGRAPH_BLUETOOTH # ng_bluetooth(4)
799 options NETGRAPH_BLUETOOTH_HCI # ng_hci(4)
800 options NETGRAPH_BLUETOOTH_L2CAP # ng_l2cap(4)
801 options NETGRAPH_BLUETOOTH_SOCKET # ng_btsocket(4)
802 options NETGRAPH_BLUETOOTH_UBT # ng_ubt(4)
803 options NETGRAPH_BLUETOOTH_UBTBCMFW # ubtbcmfw(4)
805 options NETGRAPH_BRIDGE
807 options NETGRAPH_CHECKSUM
808 options NETGRAPH_CISCO
809 options NETGRAPH_DEFLATE
810 options NETGRAPH_DEVICE
811 options NETGRAPH_ECHO
812 options NETGRAPH_EIFACE
813 options NETGRAPH_ETHER
814 options NETGRAPH_FRAME_RELAY
816 options NETGRAPH_GIF_DEMUX
817 options NETGRAPH_HOLE
818 options NETGRAPH_IFACE
819 options NETGRAPH_IP_INPUT
820 options NETGRAPH_IPFW
821 options NETGRAPH_KSOCKET
822 options NETGRAPH_L2TP
824 options NETGRAPH_MPPC_COMPRESSION
825 options NETGRAPH_MPPC_ENCRYPTION
826 options NETGRAPH_NETFLOW
828 options NETGRAPH_ONE2MANY
829 options NETGRAPH_PATCH
830 options NETGRAPH_PIPE
832 options NETGRAPH_PPPOE
833 options NETGRAPH_PPTPGRE
834 options NETGRAPH_PRED1
835 options NETGRAPH_RFC1490
836 options NETGRAPH_SOCKET
837 options NETGRAPH_SPLIT
839 options NETGRAPH_TCPMSS
843 options NETGRAPH_VLAN
845 # NgATM - Netgraph ATM
847 options NGATM_ATMBASE
853 # Network stack virtualization.
855 options VNET_DEBUG # debug for VIMAGE
858 # Network interfaces:
859 # The `loop' device is MANDATORY when networking is enabled.
862 # The `ether' device provides generic code to handle
863 # Ethernets; it is MANDATORY when an Ethernet device driver is
867 # The `vlan' device implements the VLAN tagging of Ethernet frames
868 # according to IEEE 802.1Q.
871 # The `vxlan' device implements the VXLAN encapsulation of Ethernet
872 # frames in UDP packets according to RFC7348.
875 # The `wlan' device provides generic code to support 802.11
876 # drivers, including host AP mode; it is MANDATORY for the wi,
877 # and ath drivers and will eventually be required by all 802.11 drivers.
879 options IEEE80211_DEBUG #enable debugging msgs
880 options IEEE80211_SUPPORT_MESH #enable 802.11s D3.0 support
881 options IEEE80211_SUPPORT_TDMA #enable TDMA support
883 # The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
884 # support for WEP, TKIP, and AES-CCMP crypto protocols optionally
885 # used with 802.11 devices that depend on the `wlan' module.
890 # The `wlan_xauth' device provides support for external (i.e. user-mode)
891 # authenticators for use with 802.11 drivers that use the `wlan'
892 # module and support 802.1x and/or WPA security protocols.
895 # The `wlan_acl' device provides a MAC-based access control mechanism
896 # for use with 802.11 drivers operating in ap mode and using the
898 # The 'wlan_amrr' device provides AMRR transmit rate control algorithm
902 # The `bpf' device enables the Berkeley Packet Filter. Be
903 # aware of the legal and administrative consequences of enabling this
904 # option. DHCP requires bpf.
907 # The `netmap' device implements memory-mapped access to network
908 # devices from userspace, enabling wire-speed packet capture and
909 # generation even at 10Gbit/s. Requires support in the device
910 # driver. Supported drivers are ixgbe, e1000, re.
913 # The `disc' device implements a minimal network interface,
914 # which throws away all packets sent and never receives any. It is
915 # included for testing and benchmarking purposes.
918 # The `epair' device implements a virtual back-to-back connected Ethernet
919 # like interface pair.
922 # The `edsc' device implements a minimal Ethernet interface,
923 # which discards all packets sent and receives none.
926 # The `tuntap' device implements (user-)ppp, nos-tun(8) and a pty-like virtual
930 # The `gif' device implements IPv6 over IP4 tunneling,
931 # IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
932 # IPv6 over IPv6 tunneling.
933 # The `gre' device implements GRE (Generic Routing Encapsulation) tunneling,
934 # as specified in the RFC 2784 and RFC 2890.
935 # The `me' device implements Minimal Encapsulation within IPv4 as
936 # specified in the RFC 2004.
937 # The XBONEHACK option allows the same pair of addresses to be configured on
938 # multiple gif interfaces.
944 # The `stf' device implements 6to4 encapsulation.
947 # The pf packet filter consists of three devices:
948 # The `pf' device provides /dev/pf and the firewall code itself.
949 # The `pflog' device provides the pflog0 interface which logs packets.
950 # The `pfsync' device provides the pfsync0 interface used for
951 # synchronization of firewall state tables (over the net).
959 # Common Address Redundancy Protocol. See carp(4) for more details.
965 # Link aggregation interface.
968 # WireGuard interface.
972 # Internet family options:
974 # MROUTING enables the kernel multicast packet forwarder, which works
975 # with mrouted and XORP.
977 # IPFIREWALL enables support for IP firewall construction, in
978 # conjunction with the `ipfw' program. IPFIREWALL_VERBOSE sends
979 # logged packets to the system logger. IPFIREWALL_VERBOSE_LIMIT
980 # limits the number of times a matching entry can be logged.
982 # WARNING: IPFIREWALL defaults to a policy of "deny ip from any to any"
983 # and if you do not add other rules during startup to allow access,
984 # YOU WILL LOCK YOURSELF OUT. It is suggested that you set firewall_type=open
985 # in /etc/rc.conf when first enabling this feature, then refining the
986 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
987 # feature works properly.
989 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
990 # allow everything. Use with care, if a cracker can crash your
991 # firewall machine, they can get to your protected machines. However,
992 # if you are using it as an as-needed filter for specific problems as
993 # they arise, then this may be for you. Changing the default to 'allow'
994 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
997 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''. It
998 # depends on IPFIREWALL if compiled into the kernel.
1000 # IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
1003 # IPFIREWALL_NAT64 adds support for in kernel NAT64 in ipfw.
1005 # IPFIREWALL_NPTV6 adds support for in kernel NPTv6 in ipfw.
1007 # IPFIREWALL_PMOD adds support for protocols modification module. Currently
1008 # it supports only TCP MSS modification.
1010 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
1011 # packets without touching the TTL). This can be useful to hide firewalls
1012 # from traceroute and similar tools.
1014 # PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
1016 # TCPPCAP enables code which keeps the last n packets sent and received
1019 # TCP_BLACKBOX enables enhanced TCP event logging.
1021 # TCP_HHOOK enables the hhook(9) framework hooks for the TCP stack.
1023 # ROUTE_MPATH provides support for multipath routing.
1025 options MROUTING # Multicast routing
1026 options IPFIREWALL #firewall
1027 options IPFIREWALL_VERBOSE #enable logging to syslogd(8)
1028 options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
1029 options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default
1030 options IPFIREWALL_NAT #ipfw kernel nat support
1031 options IPFIREWALL_NAT64 #ipfw kernel NAT64 support
1032 options IPFIREWALL_NPTV6 #ipfw kernel IPv6 NPT support
1033 options IPDIVERT #divert sockets
1034 options IPFILTER #ipfilter support
1035 options IPFILTER_LOG #ipfilter logging
1036 options IPFILTER_LOOKUP #ipfilter pools
1037 options IPFILTER_DEFAULT_BLOCK #block all packets by default
1038 options IPSTEALTH #support for stealth forwarding
1039 options PF_DEFAULT_TO_DROP #drop everything by default
1041 options TCP_BLACKBOX
1045 # The MBUF_STRESS_TEST option enables options which create
1046 # various random failures / extreme cases related to mbuf
1047 # functions. See mbuf(9) for a list of available test cases.
1048 # MBUF_PROFILING enables code to profile the mbuf chains
1049 # exiting the system (via participating interfaces) and
1050 # return a logarithmic histogram of monitored parameters
1051 # (e.g. packet size, wasted space, number of mbufs in chain).
1052 options MBUF_STRESS_TEST
1053 options MBUF_PROFILING
1055 # Statically link in accept filters
1056 options ACCEPT_FILTER_DATA
1057 options ACCEPT_FILTER_DNS
1058 options ACCEPT_FILTER_HTTP
1060 # TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
1061 # carried in TCP option 19. This option is commonly used to protect
1062 # TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
1063 # This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
1064 # This requires the use of 'device crypto' and either 'options IPSEC' or
1065 # 'options IPSEC_SUPPORT'.
1066 options TCP_SIGNATURE #include support for RFC 2385
1068 # DUMMYNET enables the "dummynet" bandwidth limiter. You need IPFIREWALL
1069 # as well. See dummynet(4) and ipfw(8) for more info. When you run
1070 # DUMMYNET, HZ/kern.hz should be at least 1000 for adequate response.
1073 # The DEBUGNET option enables a basic debug/panic-time networking API. It
1074 # is used by NETDUMP and NETGDB.
1077 # The NETDUMP option enables netdump(4) client support in the kernel.
1078 # This allows a panicking kernel to transmit a kernel dump to a remote host.
1081 # The NETGDB option enables netgdb(4) support in the kernel. This allows a
1082 # panicking kernel to be debugged as a GDB remote over the network.
1085 #####################################################################
1086 # FILESYSTEM OPTIONS
1089 # Only the root filesystem needs to be statically compiled or preloaded
1090 # as module; everything else will be automatically loaded at mount
1091 # time. Some people still prefer to statically compile other
1092 # filesystems as well.
1094 # NB: The UNION filesystem was known to be buggy in the past. It is now
1095 # being actively maintained, although there are still some issues being
1099 # One of these is mandatory:
1100 options FFS #Fast filesystem
1101 options NFSCL #Network File System client
1103 # The rest are optional:
1104 options AUTOFS #Automounter filesystem
1105 options CD9660 #ISO 9660 filesystem
1106 options FDESCFS #File descriptor filesystem
1107 options FUSEFS #FUSEFS support module
1108 options MSDOSFS #MS DOS File System (FAT, FAT32)
1109 options NFSLOCKD #Network Lock Manager
1110 options NFSD #Network Filesystem Server
1111 options KGSSAPI #Kernel GSSAPI implementation
1113 options NULLFS #NULL filesystem
1114 options PROCFS #Process filesystem (requires PSEUDOFS)
1115 options PSEUDOFS #Pseudo-filesystem framework
1116 options PSEUDOFS_TRACE #Debugging support for PSEUDOFS
1117 options SMBFS #SMB/CIFS filesystem
1118 options TMPFS #Efficient memory filesystem
1119 options UDF #Universal Disk Format
1120 options UNIONFS #Union filesystem
1121 # The xFS_ROOT options REQUIRE the associated ``options xFS''
1122 options NFS_ROOT #NFS usable as root device
1124 # Soft updates is a technique for improving filesystem speed and
1125 # making abrupt shutdown less risky.
1129 # Extended attributes allow additional data to be associated with files,
1130 # and is used for ACLs, Capabilities, and MAC labels.
1131 # See src/sys/ufs/ufs/README.extattr for more information.
1133 options UFS_EXTATTR_AUTOSTART
1135 # Access Control List support for UFS filesystems. The current ACL
1136 # implementation requires extended attribute support, UFS_EXTATTR,
1137 # for the underlying filesystem.
1138 # See src/sys/ufs/ufs/README.acls for more information.
1141 # Directory hashing improves the speed of operations on very large
1142 # directories at the expense of some memory.
1145 # Gjournal-based UFS journaling support.
1146 options UFS_GJOURNAL
1148 # Make space in the kernel for a root filesystem on a md device.
1149 # Define to the number of kilobytes to reserve for the filesystem.
1150 # This is now optional.
1151 # If not defined, the root filesystem passed in as the MFS_IMAGE makeoption
1152 # will be automatically embedded in the kernel during linking. Its exact size
1153 # will be consumed within the kernel.
1154 # If defined, the old way of embedding the filesystem in the kernel will be
1155 # used. That is to say MD_ROOT_SIZE KB will be allocated in the kernel and
1156 # later, the filesystem image passed in as the MFS_IMAGE makeoption will be
1157 # dd'd into the reserved space if it fits.
1158 options MD_ROOT_SIZE=10
1160 # Make the md device a potential root device, either with preloaded
1161 # images of type mfs_root or md_root.
1164 # Write-protect the md root device so that it may not be mounted writeable.
1165 options MD_ROOT_READONLY
1167 # Allow to read MD image from external memory regions
1170 # Disk quotas are supported when this option is enabled.
1171 options QUOTA #enable disk quotas
1173 # If you are running a machine just as a fileserver for PC and MAC
1174 # users, using SAMBA, you may consider setting this option
1175 # and keeping all those users' directories on a filesystem that is
1176 # mounted with the suiddir option. This gives new files the same
1177 # ownership as the directory (similar to group). It's a security hole
1178 # if you let these users run programs, so confine it to file-servers
1179 # (but it'll save you lots of headaches in those cases). Root owned
1180 # directories are exempt and X bits are cleared. The suid bit must be
1181 # set on the directory as well; see chmod(1). PC owners can't see/set
1182 # ownerships so they keep getting their toes trodden on. This saves
1183 # you all the support calls as the filesystem it's used on will act as
1184 # they expect: "It's my dir so it must be my file".
1189 options NFS_MINATTRTIMO=3 # VREG attrib cache timeout in sec
1190 options NFS_MAXATTRTIMO=60
1191 options NFS_MINDIRATTRTIMO=30 # VDIR attrib cache timeout in sec
1192 options NFS_MAXDIRATTRTIMO=60
1193 options NFS_DEBUG # Enable NFS Debugging
1196 # Add support for the EXT2FS filesystem of Linux fame. Be a bit
1197 # careful with this - the ext2fs code has a tendency to lag behind
1198 # changes and not be exercised very much, so mounting read/write could
1199 # be dangerous (and even mounting read only could result in panics.)
1203 # The system memory devices; /dev/mem, /dev/kmem
1206 # The kernel symbol table device; /dev/ksyms
1209 # Optional character code conversion support with LIBICONV.
1210 # Each option requires their base file system and LIBICONV.
1211 options CD9660_ICONV
1212 options MSDOSFS_ICONV
1216 #####################################################################
1219 # Real time extensions added in the 1993 POSIX
1220 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1222 options _KPOSIX_PRIORITY_SCHEDULING
1223 # p1003_1b_semaphores are very experimental,
1224 # user should be ready to assist in debugging if problems arise.
1225 options P1003_1B_SEMAPHORES
1227 # POSIX message queue
1228 options P1003_1B_MQUEUE
1230 #####################################################################
1231 # SECURITY POLICY PARAMETERS
1233 # Support for BSM audit
1236 # Support for Mandatory Access Control (MAC):
1239 options MAC_BSDEXTENDED
1246 options MAC_PARTITION
1248 options MAC_PRIORITY
1249 options MAC_SEEOTHERUIDS
1252 options MAC_VERIEXEC
1253 options MAC_VERIEXEC_SHA1
1254 options MAC_VERIEXEC_SHA256
1255 options MAC_VERIEXEC_SHA384
1256 options MAC_VERIEXEC_SHA512
1257 device mac_veriexec_parser
1259 # Support for Capsicum
1260 options CAPABILITIES # fine-grained rights on file descriptors
1261 options CAPABILITY_MODE # sandboxes with no global namespace access
1264 #####################################################################
1267 # The granularity of operation is controlled by the kernel option HZ (default
1268 # frequency of 1000 Hz or a period 1ms between calls). Virtual machine guests
1269 # use a value of 100. Lower values may lower overhead at the expense of accuracy
1270 # of scheduling, though the adaptive tick code reduces that overhead.
1274 # Enable support for the kernel PLL to use an external PPS signal,
1275 # under supervision of [x]ntpd(8)
1276 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
1280 # Enable support for generic feed-forward clocks in the kernel.
1281 # The feed-forward clock support is an alternative to the feedback oriented
1282 # ntpd/system clock approach, and is to be used with a feed-forward
1283 # synchronization algorithm such as the RADclock:
1284 # More info here: http://www.synclab.org/radclock
1289 #####################################################################
1292 # SCSI DEVICE CONFIGURATION
1294 # The SCSI subsystem consists of the `base' SCSI code, a number of
1295 # high-level SCSI device `type' drivers, and the low-level host-adapter
1296 # device drivers. The host adapters are listed in the ISA and PCI
1297 # device configuration sections below.
1299 # It is possible to wire down your SCSI devices so that a given bus,
1300 # target, and LUN always come on line as the same device unit. In
1301 # earlier versions the unit numbers were assigned in the order that
1302 # the devices were probed on the SCSI bus. This means that if you
1303 # removed a disk drive, you may have had to rewrite your /etc/fstab
1304 # file, and also that you had to be careful when adding a new disk
1305 # as it may have been probed earlier and moved your device configuration
1308 # This old behavior is maintained as the default behavior. The unit
1309 # assignment begins with the first non-wired down unit for a device
1310 # type. For example, if you wire a disk as "da3" then the first
1311 # non-wired disk will be assigned da4.
1313 # The syntax for wiring down devices is:
1315 envvar hint.scbus.0.at="ahc0"
1316 envvar hint.scbus.1.at="ahc1"
1317 envvar hint.scbus.1.bus="0"
1318 envvar hint.scbus.3.at="ahc2"
1319 envvar hint.scbus.3.bus="0"
1320 envvar hint.scbus.2.at="ahc2"
1321 envvar hint.scbus.2.bus="1"
1322 envvar hint.da.0.at="scbus0"
1323 envvar hint.da.0.target="0"
1324 envvar hint.da.0.unit="0"
1325 envvar hint.da.1.at="scbus3"
1326 envvar hint.da.1.target="1"
1327 envvar hint.da.2.at="scbus2"
1328 envvar hint.da.2.target="3"
1329 envvar hint.sa.1.at="scbus1"
1330 envvar hint.sa.1.target="6"
1332 # "units" (SCSI logical unit number) that are not specified are
1333 # treated as if specified as LUN 0.
1335 # All SCSI devices allocate as many units as are required.
1337 # The ch driver drives SCSI Media Changer ("jukebox") devices.
1339 # The da driver drives SCSI Direct Access ("disk") and Optical Media
1342 # The sa driver drives SCSI Sequential Access ("tape") devices.
1344 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1346 # The ses driver drives SCSI Environment Services ("ses") and
1347 # SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1349 # The pt driver drives SCSI Processor devices.
1351 # The sg driver provides a passthrough API that is compatible with the
1352 # Linux SG driver. It will work in conjunction with the Linuxulator
1353 # to run linux SG apps. It can also stand on its own and provide
1354 # source level API compatibility for porting apps to FreeBSD.
1356 # Target Mode support is provided here but also requires that a SIM
1357 # (SCSI Host Adapter Driver) provide support as well.
1359 # The targ driver provides target mode support as a Processor type device.
1360 # It exists to give the minimal context necessary to respond to Inquiry
1361 # commands. There is a sample user application that shows how the rest
1362 # of the command support might be done in /usr/share/examples/scsi_target.
1364 # The targbh driver provides target mode support and exists to respond
1365 # to incoming commands that do not otherwise have a logical unit assigned
1368 # The pass driver provides a passthrough API to access the CAM subsystem.
1370 device scbus #base SCSI code
1371 device ch #SCSI media changers
1372 device da #SCSI direct access devices (aka disks)
1373 device sa #SCSI tapes
1374 device cd #SCSI CD-ROMs
1375 device ses #Enclosure Services (SES and SAF-TE)
1376 device pt #SCSI processor
1377 device targ #SCSI Target Mode Code
1378 device targbh #SCSI Target Mode Blackhole Device
1379 device pass #CAM passthrough driver
1380 device sg #Linux SCSI passthrough
1381 device ctl #CAM Target Layer
1384 # debugging options:
1385 # CAMDEBUG Compile in all possible debugging.
1386 # CAM_DEBUG_COMPILE Debug levels to compile in.
1387 # CAM_DEBUG_FLAGS Debug levels to enable on boot.
1388 # CAM_DEBUG_BUS Limit debugging to the given bus.
1389 # CAM_DEBUG_TARGET Limit debugging to the given target.
1390 # CAM_DEBUG_LUN Limit debugging to the given lun.
1391 # CAM_DEBUG_DELAY Delay in us after printing each debug line.
1392 # CAM_IO_STATS Publish additional CAM device statics by sysctl
1394 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1395 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1396 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
1397 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
1398 # queue after a bus reset, and the number of milliseconds to
1399 # freeze the device queue after a bus device reset. This
1400 # can be changed at boot and runtime with the
1401 # kern.cam.scsi_delay tunable/sysctl.
1403 options CAM_DEBUG_COMPILE=-1
1404 options CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
1405 options CAM_DEBUG_BUS=-1
1406 options CAM_DEBUG_TARGET=-1
1407 options CAM_DEBUG_LUN=-1
1408 options CAM_DEBUG_DELAY=1
1409 options CAM_MAX_HIGHPOWER=4
1410 options SCSI_NO_SENSE_STRINGS
1411 options SCSI_NO_OP_STRINGS
1412 options SCSI_DELAY=5000 # Be pessimistic about Joe SCSI device
1413 options CAM_IOSCHED_DYNAMIC
1414 options CAM_IO_STATS
1415 options CAM_TEST_FAILURE
1417 # Options for the CAM CDROM driver:
1418 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1419 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1420 # enforced if there is I/O waiting for another LUN
1421 # The compiled in defaults for these variables are 2 and 10 seconds,
1424 # These can also be changed on the fly with the following sysctl variables:
1425 # kern.cam.cd.changer.min_busy_seconds
1426 # kern.cam.cd.changer.max_busy_seconds
1428 options CHANGER_MIN_BUSY_SECONDS=2
1429 options CHANGER_MAX_BUSY_SECONDS=10
1431 # Options for the CAM sequential access driver:
1432 # SA_IO_TIMEOUT: Timeout for read/write/wfm operations, in minutes
1433 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
1434 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
1435 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
1436 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
1437 options SA_IO_TIMEOUT=4
1438 options SA_SPACE_TIMEOUT=60
1439 options SA_REWIND_TIMEOUT=(2*60)
1440 options SA_ERASE_TIMEOUT=(4*60)
1441 options SA_1FM_AT_EOD
1443 # Optional timeout for the CAM processor target (pt) device
1444 # This is specified in seconds. The default is 60 seconds.
1445 options SCSI_PT_DEFAULT_TIMEOUT=60
1447 # Optional enable of doing SES passthrough on other devices (e.g., disks)
1449 # Normally disabled because a lot of newer SCSI disks report themselves
1450 # as having SES capabilities, but this can then clot up attempts to build
1451 # a topology with the SES device that's on the box these drives are in....
1452 options SES_ENABLE_PASSTHROUGH
1455 #####################################################################
1456 # MISCELLANEOUS DEVICES AND OPTIONS
1458 device pty #BSD-style compatibility pseudo ttys
1459 device nmdm #back-to-back tty devices
1460 device md #Memory/malloc disk
1461 device snp #Snoop device - to look at pty/vty/etc..
1462 device ccd #Concatenated disk driver
1463 device firmware #firmware(9) support
1465 # Kernel side iconv library
1468 # Size of the kernel message buffer. Should be N * pagesize.
1469 options MSGBUF_SIZE=40960
1472 #####################################################################
1473 # HARDWARE BUS CONFIGURATION
1476 # PCI bus & PCI options:
1479 options PCI_HP # PCI-Express native HotPlug
1480 options PCI_IOV # PCI SR-IOV support
1483 #####################################################################
1484 # HARDWARE DEVICE CONFIGURATION
1486 # For ISA the required hints are listed.
1487 # PCI, CardBus, and SD/MMC are self identifying buses, so
1488 # no hints are needed.
1491 # Mandatory devices:
1494 # These options are valid for other keyboard drivers as well.
1495 options KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
1496 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
1498 device kbdmux # keyboard multiplexer
1499 options KBDMUX_DFLT_KEYMAP # specify the built-in keymap
1500 makeoptions KBDMUX_DFLT_KEYMAP=it.iso
1502 options FB_DEBUG # Frame buffer debugging
1504 # Enable experimental features of the syscons terminal emulator (teken).
1505 options TEKEN_CONS25 # cons25-style terminal emulation
1506 options TEKEN_UTF8 # UTF-8 output handling
1508 # The vt video console driver.
1510 options VT_ALT_TO_ESC_HACK=1 # Prepend ESC sequence to ALT keys
1511 options VT_MAXWINDOWS=16 # Number of virtual consoles
1512 options VT_TWOBUTTON_MOUSE # Use right mouse button to paste
1514 # The following options set the maximum framebuffer size.
1515 options VT_FB_MAX_HEIGHT=480
1516 options VT_FB_MAX_WIDTH=640
1518 # The following options will let you change the default vt terminal colors.
1519 options TERMINAL_NORM_ATTR=(FG_GREEN|BG_BLACK)
1520 options TERMINAL_KERN_ATTR=(FG_LIGHTRED|BG_BLACK)
1527 # SCSI host adapters:
1529 # aacraid: Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming
1530 # families. Container interface, CAM required.
1531 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1532 # 19160x/29160x, aic7770/aic78xx
1533 # ahd: Adaptec 29320/39320 Controllers.
1534 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1535 # ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1536 # ISP 12160 Ultra3 SCSI,
1537 # Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1538 # Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1539 # Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
1540 # ispfw: Firmware module for Qlogic host adapters
1541 # mpr: LSI-Logic MPT/Fusion Gen 3
1542 # mps: LSI-Logic MPT/Fusion Gen 2
1543 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
1544 # or FC9x9 Fibre Channel host adapters.
1545 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1546 # 53C810, 53C810A, 53C815, 53C825, 53C825A, 53C860, 53C875,
1547 # 53C876, 53C885, 53C895, 53C895A, 53C896, 53C897, 53C1510D,
1548 # 53C1010-33, 53C1010-66.
1554 envvar hint.isp.0.disable="1"
1555 envvar hint.isp.0.role="3"
1556 envvar hint.isp.0.prefer_iomap="1"
1557 envvar hint.isp.0.prefer_memmap="1"
1558 envvar hint.isp.0.fwload_disable="1"
1559 envvar hint.isp.0.ignore_nvram="1"
1560 envvar hint.isp.0.fullduplex="1"
1561 envvar hint.isp.0.topology="lport"
1562 envvar hint.isp.0.topology="nport"
1563 envvar hint.isp.0.topology="lport-only"
1564 envvar hint.isp.0.topology="nport-only"
1565 # we can't get u_int64_t types, nor can we get strings if it's got
1566 # a leading 0x, hence this silly dodge.
1567 envvar hint.isp.0.portwnn="w50000000aaaa0000"
1568 envvar hint.isp.0.nodewnn="w50000000aaaa0001"
1570 device mpr # LSI-Logic MPT-Fusion 3
1571 device mps # LSI-Logic MPT-Fusion 2
1572 device mpt # LSI-Logic MPT-Fusion
1575 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1576 # controllers that have it configured only if this option is set. Unfortunately,
1577 # this doesn't work on some motherboards, which prevents it from being the
1579 options AHC_ALLOW_MEMIO
1581 # Dump the contents of the ahc controller configuration PROM.
1582 options AHC_DUMP_EEPROM
1584 # Bitmap of units to enable targetmode operations.
1585 options AHC_TMODE_ENABLE
1587 # Compile in Aic7xxx Debugging code.
1590 # Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1591 options AHC_DEBUG_OPTS
1593 # Print register bitfields in debug output. Adds ~128k to driver
1595 options AHC_REG_PRETTY_PRINT
1597 # Compile in aic79xx debugging code.
1600 # Aic79xx driver debugging options. Adds ~215k to driver. See ahd(4).
1601 options AHD_DEBUG_OPTS=0xFFFFFFFF
1603 # Print human-readable register definitions when debugging
1604 options AHD_REG_PRETTY_PRINT
1606 # Bitmap of units to enable targetmode operations.
1607 options AHD_TMODE_ENABLE
1609 # Options used in dev/iscsi (Software iSCSI stack)
1611 options ISCSI_INITIATOR_DEBUG=9
1613 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
1615 # ISP_TARGET_MODE - enable target mode operation
1617 options ISP_TARGET_MODE=1
1619 # ISP_DEFAULT_ROLES - default role
1623 # both=3 (not supported currently)
1625 # ISP_INTERNAL_TARGET (trivial internal disk target, for testing)
1627 options ISP_DEFAULT_ROLES=0
1629 #options SYM_SETUP_SCSI_DIFF #-HVD support for 825a, 875, 885
1630 # disabled:0 (default), enabled:1
1631 #options SYM_SETUP_PCI_PARITY #-PCI parity checking
1632 # disabled:0, enabled:1 (default)
1633 #options SYM_SETUP_MAX_LUN #-Number of LUNs supported
1634 # default:8, range:[1..64]
1637 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
1638 # These controllers have a SCSI-like interface, and require the
1639 # CAM infrastructure.
1644 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers. Only
1645 # one entry is needed; the code will find and configure all supported
1648 device ida # Compaq Smart RAID
1649 device mlx # Mylex DAC960
1650 device mfi # LSI MegaRAID SAS
1651 device mfip # LSI MegaRAID SAS passthrough, requires CAM
1653 device mrsas # LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
1658 device twe # 3ware ATA RAID
1661 # Serial ATA host controllers:
1663 # ahci: Advanced Host Controller Interface (AHCI) compatible
1664 # mvs: Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
1665 # siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
1667 # These drivers are part of cam(4) subsystem. They supersede less featured
1668 # ata(4) subsystem drivers, supporting same hardware.
1675 # The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
1676 # PC Card devices. You only need one "device ata" for it to find all
1677 # PCI and PC Card ATA/ATAPI devices on modern machines.
1678 # Alternatively, individual bus and chipset drivers may be chosen by using
1679 # the 'atacore' driver then selecting the drivers on a per vendor basis.
1680 # For example to build a system which only supports a VIA chipset,
1681 # omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
1685 #device atacore # Core ATA functionality
1686 #device ataisa # ISA bus support
1687 #device atapci # PCI bus support; only generic chipset support
1690 #device ataacard # ACARD
1691 #device ataacerlabs # Acer Labs Inc. (ALI)
1692 #device ataamd # American Micro Devices (AMD)
1693 #device ataati # ATI
1694 #device atacenatek # Cenatek
1695 #device atacypress # Cypress
1696 #device atacyrix # Cyrix
1697 #device atahighpoint # HighPoint
1698 #device ataintel # Intel
1699 #device ataite # Integrated Technology Inc. (ITE)
1700 #device atajmicron # JMicron
1701 #device atamarvell # Marvell
1702 #device atamicron # Micron
1703 #device atanational # National
1704 #device atanetcell # NetCell
1705 #device atanvidia # nVidia
1706 #device atapromise # Promise
1707 #device ataserverworks # ServerWorks
1708 #device atasiliconimage # Silicon Image Inc. (SiI) (formerly CMD)
1709 #device atasis # Silicon Integrated Systems Corp.(SiS)
1710 #device atavia # VIA Technologies Inc.
1713 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1714 envvar hint.ata.0.at="isa"
1715 envvar hint.ata.0.port="0x1f0"
1716 envvar hint.ata.0.irq="14"
1717 envvar hint.ata.1.at="isa"
1718 envvar hint.ata.1.port="0x170"
1719 envvar hint.ata.1.irq="15"
1722 # uart: generic driver for serial interfaces.
1726 # Options for uart(4)
1727 options UART_PPS_ON_CTS # Do time pulse capturing using CTS
1729 options UART_POLL_FREQ # Set polling rate, used when hw has
1730 # no interrupt support (50 Hz default).
1732 # The following hint should only be used for pure ISA devices. It is not
1733 # needed otherwise. Use of hints is strongly discouraged.
1734 envvar hint.uart.0.at="isa"
1736 # The following 3 hints are used when the UART is a system device (i.e., a
1737 # console or debug port), but only on platforms that don't have any other
1738 # means to pass the information to the kernel. The unit number of the hint
1739 # is only used to bundle the hints together. There is no relation to the
1740 # unit number of the probed UART.
1741 envvar hint.uart.0.port="0x3f8"
1742 envvar hint.uart.0.flags="0x10"
1743 envvar hint.uart.0.baud="115200"
1745 # `flags' for serial drivers that support consoles, like uart(4):
1746 # 0x10 enable console support for this unit. Other console flags
1747 # (if applicable) are ignored unless this is set. Enabling
1748 # console support does not make the unit the preferred console.
1749 # Boot with -h or set boot_serial=YES in the loader.
1750 # Currently, at most one unit can have console support; the
1751 # first one (in config file order) with this flag set is
1753 # 0x80 use this port for serial line gdb support in ddb. Also known
1757 # Options for serial drivers that support consoles:
1758 options BREAK_TO_DEBUGGER # A BREAK/DBG on the console goes to
1759 # ddb, if available.
1761 # Solaris implements a new BREAK which is initiated by a character
1762 # sequence CR ~ ^b which is similar to a familiar pattern used on
1763 # Sun servers by the Remote Console. There are FreeBSD extensions:
1764 # CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
1765 options ALT_BREAK_TO_DEBUGGER
1767 # Serial Communications Controller
1768 # Supports the Freescale/NXP QUad Integrated and Zilog Z8530 multi-channel
1769 # communications controllers.
1772 # PCI Universal Communications driver
1773 # Supports various multi port PCI I/O cards.
1777 # Network interfaces:
1779 # MII bus support is required for many PCI Ethernet NICs,
1780 # namely those which use MII-compliant transceivers or implement
1781 # transceiver control interfaces that operate like an MII. Adding
1782 # "device miibus" to the kernel config pulls in support for the generic
1783 # miibus API, the common support for bit-bang'ing the MII and all
1784 # of the PHY drivers, including a generic one for PHYs that aren't
1785 # specifically handled by an individual driver. Support for specific
1786 # PHYs may be built by adding "device mii", "device mii_bitbang" if
1787 # needed by the NIC driver and then adding the appropriate PHY driver.
1788 device mii # Minimal MII support
1789 device mii_bitbang # Common module for bit-bang'ing the MII
1790 device miibus # MII support w/ bit-bang'ing and all PHYs
1792 device acphy # Altima Communications AC101
1793 device amphy # AMD AM79c873 / Davicom DM910{1,2}
1794 device atphy # Attansic/Atheros F1
1795 device axphy # Asix Semiconductor AX88x9x
1796 device bmtphy # Broadcom BCM5201/BCM5202 and 3Com 3c905C
1797 device bnxt # Broadcom NetXtreme-C/NetXtreme-E
1798 device brgphy # Broadcom BCM54xx/57xx 1000baseTX
1799 device cgem # Cadence GEM Gigabit Ethernet
1800 device ciphy # Cicada/Vitesse CS/VSC8xxx
1801 device e1000phy # Marvell 88E1000 1000/100/10-BT
1802 device gentbi # Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
1803 device icsphy # ICS ICS1889-1893
1804 device ip1000phy # IC Plus IP1000A/IP1001
1805 device jmphy # JMicron JMP211/JMP202
1806 device lxtphy # Level One LXT-970
1807 device nsgphy # NatSemi DP8361/DP83865/DP83891
1808 device nsphy # NatSemi DP83840A
1809 device nsphyter # NatSemi DP83843/DP83815
1810 device pnaphy # HomePNA
1811 device qsphy # Quality Semiconductor QS6612
1812 device rdcphy # RDC Semiconductor R6040
1813 device rgephy # RealTek 8169S/8110S/8211B/8211C
1814 device rlphy # RealTek 8139
1815 device rlswitch # RealTek 8305
1816 device smcphy # SMSC LAN91C111
1817 device tdkphy # TDK 89Q2120
1818 device truephy # LSI TruePHY
1819 device xmphy # XaQti XMAC II
1821 # ae: Support for gigabit ethernet adapters based on the Attansic/Atheros
1822 # L2 PCI-Express FastEthernet controllers.
1823 # age: Support for gigabit ethernet adapters based on the Attansic/Atheros
1824 # L1 PCI express gigabit ethernet controllers.
1825 # alc: Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
1826 # ale: Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
1827 # ath: Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
1828 # bce: Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
1830 # bfe: Broadcom BCM4401 Ethernet adapter.
1831 # bge: Support for gigabit ethernet adapters based on the Broadcom
1832 # BCM570x family of controllers, including the 3Com 3c996-T,
1833 # the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1834 # the embedded gigE NICs on Dell PowerEdge 2550 servers.
1835 # bnxt: Broadcom NetXtreme-C and NetXtreme-E PCIe 10/25/50G Ethernet adapters.
1836 # bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
1838 # bwi: Broadcom BCM430* and BCM431* family of wireless adapters.
1839 # bwn: Broadcom BCM43xx family of wireless adapters.
1840 # cas: Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
1841 # cxgb: Chelsio T3 based 1GbE/10GbE PCIe Ethernet adapters.
1842 # cxgbe:Chelsio T4, T5, and T6-based 1/10/25/40/100GbE PCIe Ethernet
1844 # cxgbev: Chelsio T4, T5, and T6-based PCIe Virtual Functions.
1845 # dc: Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1846 # and various workalikes including:
1847 # the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1848 # AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1849 # 82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1850 # and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1851 # replaces the old al, ax, dm, pn and mx drivers. List of brands:
1852 # Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1853 # SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1854 # LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1856 # em: Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1857 # fxp: Intel EtherExpress Pro/100B
1858 # (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
1859 # gem: Apple GMAC/Sun ERI/Sun GEM
1860 # jme: JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
1861 # le: AMD Am7900 LANCE and Am79C9xx PCnet
1862 # lge: Support for PCI gigabit ethernet adapters based on the Level 1
1863 # LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1864 # SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1865 # lio: Support for Cavium 23XX Ethernet adapters
1866 # malo: Marvell Libertas wireless NICs.
1867 # mwl: Marvell 88W8363 802.11n wireless NICs.
1868 # Requires the mwl firmware module
1869 # mwlfw: Marvell 88W8363 firmware
1870 # msk: Support for gigabit ethernet adapters based on the Marvell/SysKonnect
1871 # Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
1872 # 88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
1873 # 88E8055, 88E8056 and D-Link 560T/550SX.
1874 # mlxfw: Mellanox firmware update module.
1875 # mlx5: Mellanox ConnectX-4 and ConnectX-4 LX IB and Eth shared code module.
1876 # mlx5en:Mellanox ConnectX-4 and ConnectX-4 LX PCIe Ethernet adapters.
1877 # my: Myson Fast Ethernet (MTD80X, MTD89X)
1878 # nge: Support for PCI gigabit ethernet adapters based on the National
1879 # Semiconductor DP83820 and DP83821 chipset. This includes the
1880 # SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
1881 # GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
1882 # EP-320G-TX and the Netgear GA622T.
1883 # oce: Emulex 10 Gbit adapters (OneConnect Ethernet)
1884 # ral: Ralink Technology IEEE 802.11 wireless adapter
1885 # re: RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
1886 # rl: Support for PCI fast ethernet adapters based on the RealTek 8129/8139
1887 # chipset. Note that the RealTek driver defaults to using programmed
1888 # I/O to do register accesses because memory mapped mode seems to cause
1889 # severe lockups on SMP hardware. This driver also supports the
1890 # Accton EN1207D `Cheetah' adapter, which uses a chip called
1891 # the MPX 5030/5038, which is either a RealTek in disguise or a
1892 # RealTek workalike. Note that the D-Link DFE-530TX+ uses the RealTek
1893 # chipset and is supported by this driver, not the 'vr' driver.
1894 # rtwn: RealTek wireless adapters.
1895 # rtwnfw: RealTek wireless firmware.
1896 # sge: Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
1897 # sis: Support for NICs based on the Silicon Integrated Systems SiS 900,
1898 # SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
1899 # sk: Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
1900 # This includes the SK-9841 and SK-9842 single port cards (single mode
1901 # and multimode fiber) and the SK-9843 and SK-9844 dual port cards
1902 # (also single mode and multimode).
1903 # The driver will autodetect the number of ports on the card and
1904 # attach each one as a separate network interface.
1905 # ste: Sundance Technologies ST201 PCI fast ethernet controller, includes
1906 # the D-Link DFE-550TX.
1907 # stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
1908 # TC9021 family of controllers, including the Sundance ST2021/ST2023,
1909 # the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
1910 # ti: Support for PCI gigabit ethernet NICs based on the Alteon Networks
1911 # Tigon 1 and Tigon 2 chipsets. This includes the Alteon AceNIC, the
1912 # 3Com 3c985, the Netgear GA620 and various others. Note that you will
1913 # probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
1914 # vr: Support for various fast ethernet adapters based on the VIA
1915 # Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
1916 # including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
1917 # DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
1918 # vte: DM&P Vortex86 RDC R6040 Fast Ethernet
1919 # xl: Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
1920 # Etherlink XL cards and integrated controllers. This includes the
1921 # integrated 3c905B-TX chips in certain Dell Optiplex and Dell
1922 # Precision desktop machines and the integrated 3c905-TX chips
1923 # in Dell Latitude laptop docking stations.
1924 # Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
1926 # PCI Ethernet NICs that use the common MII bus controller code.
1927 device ae # Attansic/Atheros L2 FastEthernet
1928 device age # Attansic/Atheros L1 Gigabit Ethernet
1929 device alc # Atheros AR8131/AR8132 Ethernet
1930 device ale # Atheros AR8121/AR8113/AR8114 Ethernet
1931 device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet
1932 device bfe # Broadcom BCM440x 10/100 Ethernet
1933 device bge # Broadcom BCM570xx Gigabit Ethernet
1934 device cas # Sun Cassini/Cassini+ and NS DP83065 Saturn
1935 device dc # DEC/Intel 21143 and various workalikes
1936 device et # Agere ET1310 10/100/Gigabit Ethernet
1937 device fxp # Intel EtherExpress PRO/100B (82557, 82558)
1938 envvar hint.fxp.0.prefer_iomap="0"
1939 device gem # Apple GMAC/Sun ERI/Sun GEM
1940 device jme # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
1941 device lge # Level 1 LXT1001 gigabit Ethernet
1942 device lio # Support for Cavium 23XX Ethernet adapters
1943 device mlxfw # Mellanox firmware update module
1944 device mlx5 # Shared code module between IB and Ethernet
1945 device mlx5en # Mellanox ConnectX-4 and ConnectX-4 LX
1946 device msk # Marvell/SysKonnect Yukon II Gigabit Ethernet
1947 device my # Myson Fast Ethernet (MTD80X, MTD89X)
1948 device nge # NatSemi DP83820 gigabit Ethernet
1949 device re # RealTek 8139C+/8169/8169S/8110S
1950 device rl # RealTek 8129/8139
1951 device sge # Silicon Integrated Systems SiS190/191
1952 device sis # Silicon Integrated Systems SiS 900/SiS 7016
1953 device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
1954 device ste # Sundance ST201 (D-Link DFE-550TX)
1955 device stge # Sundance/Tamarack TC9021 gigabit Ethernet
1956 device vr # VIA Rhine, Rhine II
1957 device vte # DM&P Vortex86 RDC R6040 Fast Ethernet
1958 device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
1960 # PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
1962 device em # Intel Pro/1000 Gigabit Ethernet
1963 device ix # Intel Pro/10Gbe PCIE Ethernet
1964 device ixv # Intel Pro/10Gbe PCIE Ethernet VF
1966 # PCI Ethernet NICs.
1967 device cxgb # Chelsio T3 10 Gigabit Ethernet
1968 device cxgb_t3fw # Chelsio T3 10 Gigabit Ethernet firmware
1969 device cxgbe # Chelsio T4-T6 1/10/25/40/100 Gigabit Ethernet
1970 device cxgbev # Chelsio T4-T6 Virtual Functions
1971 device le # AMD Am7900 LANCE and Am79C9xx PCnet
1972 device mxge # Myricom Myri-10G 10GbE NIC
1973 device oce # Emulex 10 GbE (OneConnect Ethernet)
1974 device ti # Alteon Networks Tigon I/II gigabit Ethernet
1976 # PCI IEEE 802.11 Wireless NICs
1977 device ath # Atheros pci/cardbus NIC's
1978 device ath_hal # pci/cardbus chip support
1979 #device ath_ar5210 # AR5210 chips
1980 #device ath_ar5211 # AR5211 chips
1981 #device ath_ar5212 # AR5212 chips
1988 #device ath_ar5416 # AR5416 chips
1989 # All of the AR5212 parts have a problem when paired with the AR71xx
1990 # CPUS. These parts have a bug that triggers a fatal bus error on the AR71xx
1991 # only. Details of the exact nature of the bug are sketchy, but some can be
1992 # found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
1993 # 6. This option enables this workaround. There is a performance penalty
1994 # for this work around, but without it things don't work at all. The DMA
1995 # from the card usually bursts 128 bytes, but on the affected CPUs, only
1997 options AH_RXCFG_SDMAMW_4BYTES
1998 #device ath_ar9160 # AR9160 chips
1999 #device ath_ar9280 # AR9280 chips
2000 #device ath_ar9285 # AR9285 chips
2001 device ath_rate_sample # SampleRate tx rate control for ath
2002 device bwi # Broadcom BCM430* BCM431*
2003 device bwn # Broadcom BCM43xx
2004 device malo # Marvell Libertas wireless NICs.
2005 device mwl # Marvell 88W8363 802.11n wireless NICs.
2007 device ral # Ralink Technology RT2500 wireless NICs.
2008 device rtwn # Realtek wireless NICs
2011 # Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
2012 #options TI_SF_BUF_JUMBO
2013 # Turn on the header splitting option for the ti(4) driver firmware. This
2014 # only works for Tigon II chips, and has no effect for Tigon I chips.
2015 # This option requires the TI_SF_BUF_JUMBO option above.
2016 #options TI_JUMBO_HDRSPLIT
2018 # These two options allow manipulating the mbuf cluster size and mbuf size,
2019 # respectively. Be very careful with NIC driver modules when changing
2020 # these from their default values, because that can potentially cause a
2021 # mismatch between the mbuf size assumed by the kernel and the mbuf size
2022 # assumed by a module. The only driver that currently has the ability to
2023 # detect a mismatch is ti(4).
2024 options MCLSHIFT=11 # mbuf cluster shift in bits, 11 == 2KB
2025 options MSIZE=256 # mbuf size in bytes
2030 # sound: The generic sound driver.
2036 # snd_*: Device-specific drivers.
2038 # The flags of the device tell the device a bit more info about the
2039 # device that normally is obtained through the PnP interface.
2040 # bit 2..0 secondary DMA channel;
2041 # bit 4 set if the board uses two dma channels;
2042 # bit 15..8 board type, overrides autodetection; leave it
2043 # zero if don't know what to put in (and you don't,
2044 # since this is unsupported at the moment...).
2046 # snd_als4000: Avance Logic ALS4000 PCI.
2047 # snd_atiixp: ATI IXP 200/300/400 PCI.
2048 # snd_cmi: CMedia CMI8338/CMI8738 PCI.
2049 # snd_cs4281: Crystal Semiconductor CS4281 PCI.
2050 # snd_csa: Crystal Semiconductor CS461x/428x PCI. (except
2052 # snd_emu10k1: Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
2053 # snd_emu10kx: Creative SoundBlaster Live! and Audigy
2054 # snd_envy24: VIA Envy24 and compatible, needs snd_spicds.
2055 # snd_envy24ht: VIA Envy24HT and compatible, needs snd_spicds.
2056 # snd_es137x: Ensoniq AudioPCI ES137x PCI.
2057 # snd_fm801: Forte Media FM801 PCI.
2058 # snd_hda: Intel High Definition Audio (Controller) and
2060 # snd_hdspe: RME HDSPe AIO and RayDAT.
2061 # snd_ich: Intel ICH AC'97 and some more audio controllers
2062 # embedded in a chipset, for example nVidia
2063 # nForce controllers.
2064 # snd_maestro3: ESS Technology Maestro-3/Allegro PCI.
2065 # snd_neomagic: Neomagic 256 AV/ZX PCI.
2066 # snd_solo: ESS Solo-1x PCI.
2067 # snd_spicds: SPI codec driver, needed by Envy24/Envy24HT drivers.
2068 # snd_t4dwave: Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
2070 # snd_uaudio: USB audio.
2071 # snd_via8233: VIA VT8233x PCI.
2072 # snd_via82c686: VIA VT82C686A PCI.
2073 # snd_vibes: S3 Sonicvibes PCI.
2096 device snd_via82c686
2099 # For non-PnP sound cards:
2100 envvar hint.pcm.0.at="isa"
2101 envvar hint.pcm.0.irq="10"
2102 envvar hint.pcm.0.drq="1"
2103 envvar hint.pcm.0.flags="0x0"
2104 envvar hint.sbc.0.at="isa"
2105 envvar hint.sbc.0.port="0x220"
2106 envvar hint.sbc.0.irq="5"
2107 envvar hint.sbc.0.drq="1"
2108 envvar hint.sbc.0.flags="0x15"
2109 envvar hint.gusc.0.at="isa"
2110 envvar hint.gusc.0.port="0x220"
2111 envvar hint.gusc.0.irq="5"
2112 envvar hint.gusc.0.drq="1"
2113 envvar hint.gusc.0.flags="0x13"
2116 # Following options are intended for debugging/testing purposes:
2118 # SND_DEBUG Enable extra debugging code that includes
2119 # sanity checking and possible increase of
2122 # SND_DIAGNOSTIC Similar in a spirit of INVARIANTS/DIAGNOSTIC,
2123 # zero tolerance against inconsistencies.
2125 # SND_FEEDER_MULTIFORMAT By default, only 16/32 bit feeders are compiled
2126 # in. This options enable most feeder converters
2127 # except for 8bit. WARNING: May bloat the kernel.
2129 # SND_FEEDER_FULL_MULTIFORMAT Ditto, but includes 8bit feeders as well.
2131 # SND_FEEDER_RATE_HP (feeder_rate) High precision 64bit arithmetic
2132 # as much as possible (the default trying to
2133 # avoid it). Possible slowdown.
2135 # SND_PCM_64 (Only applicable for i386/32bit arch)
2136 # Process 32bit samples through 64bit
2137 # integer/arithmetic. Slight increase of dynamic
2138 # range at a cost of possible slowdown.
2140 # SND_OLDSTEREO Only 2 channels are allowed, effectively
2141 # disabling multichannel processing.
2144 options SND_DIAGNOSTIC
2145 options SND_FEEDER_MULTIFORMAT
2146 options SND_FEEDER_FULL_MULTIFORMAT
2147 options SND_FEEDER_RATE_HP
2149 options SND_OLDSTEREO
2154 # cbb: pci/CardBus bridge implementing YENTA interface
2155 # cardbus: CardBus slots
2163 # mmcsd MMC/SD memory card
2164 # sdhci Generic PCI SD Host Controller
2165 # rtsx Realtek SD card reader (RTS5209, RTS5227, ...)
2174 # System Management Bus support is provided by the 'smbus' device.
2175 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
2176 # which is a child of the 'smbus' device.
2178 # Supported devices:
2179 # smb standard I/O through /dev/smb*
2181 # Supported SMB interfaces:
2182 # iicsmb I2C to SMB bridge with any iicbus interface
2183 # intpm Intel PIIX4 (82371AB, 82443MX) Power Management Unit
2184 # alpm Acer Aladdin-IV/V/Pro2 Power Management Unit
2185 # ichsmb Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
2186 # viapm VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2187 # amdpm AMD 756 Power Management Unit
2188 # amdsmb AMD 8111 SMBus 2.0 Controller
2189 # nfpm NVIDIA nForce Power Management Unit
2190 # nfsmb NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
2191 # ismt Intel SMBus 2.0 controller chips (on Atom S1200, C2000)
2193 device smbus # Bus support, required for smb below.
2207 # SMBus peripheral devices
2209 # jedec_dimm Asset and temperature reporting for DDR3 and DDR4 DIMMs
2215 # Philips i2c bus support is provided by the `iicbus' device.
2217 # Supported devices:
2218 # ic i2c network interface
2219 # iic i2c standard io
2220 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
2221 # iicoc simple polling driver for OpenCores I2C controller
2224 # iicbb generic I2C bit-banging code (needed by lpbb)
2226 device iicbus # Bus support, required for ic/iic/iicsmb below.
2227 device iicbb # bitbang driver; implements i2c on a pair of gpio pins
2230 device iic # userland access to i2c slave devices via ioctl(8)
2231 device iicsmb # smb over i2c bridge
2232 device iicoc # OpenCores I2C controller support
2234 # I2C bus multiplexer (mux) devices
2235 device iicmux # i2c mux core driver
2236 device iic_gpiomux # i2c mux hardware controlled via gpio pins
2237 device ltc430x # LTC4305 and LTC4306 i2c mux chips
2239 # I2C peripheral devices
2241 device ad7418 # Analog Devices temp and voltage sensor
2242 device ads111x # Texas Instruments ADS101x and ADS111x ADCs
2243 device ds1307 # Dallas DS1307 RTC and compatible
2244 device ds13rtc # All Dallas/Maxim ds13xx chips
2245 device ds1672 # Dallas DS1672 RTC
2246 device ds3231 # Dallas DS3231 RTC + temperature
2247 device fan53555 # Fairchild Semi FAN53555/SYR82x Regulator
2248 device icee # AT24Cxxx and compatible EEPROMs
2249 device isl12xx # Intersil ISL12xx RTC
2250 device lm75 # LM75 compatible temperature sensor
2251 device nxprtc # NXP RTCs: PCA/PFC212x PCA/PCF85xx
2252 device rtc8583 # Epson RTC-8583
2253 device s35390a # Seiko Instruments S-35390A RTC
2254 device sy8106a # Silergy Corp. SY8106A buck regulator
2258 # Parallel port bus support is provided by the `ppbus' device.
2259 # Multiple devices may be attached to the parallel port, devices
2260 # are automatically probed and attached when found.
2262 # Supported devices:
2263 # lpt Parallel Printer
2264 # plip Parallel network interface
2265 # ppi General-purpose I/O ("Geek Port") + IEEE1284 I/O
2266 # pps Pulse per second Timing Interface
2267 # lpbb Philips official parallel port I2C bit-banging interface
2268 # pcfclock Parallel port clock driver.
2270 # Supported interfaces:
2271 # ppc ISA-bus parallel port interfaces.
2274 options PPC_PROBE_CHIPSET # Enable chipset specific detection
2275 # (see flags in ppc(4))
2276 options DEBUG_1284 # IEEE1284 signaling protocol debug
2277 options PERIPH_1284 # Makes your computer act as an IEEE1284
2278 # compliant peripheral
2279 options DONTPROBE_1284 # Avoid boot detection of PnP parallel devices
2280 options LPT_DEBUG # Printer driver debug
2281 options PPC_DEBUG # Parallel chipset level debug
2282 options PLIP_DEBUG # Parallel network IP interface debug
2283 options PCFCLOCK_VERBOSE # Verbose pcfclock driver
2284 options PCFCLOCK_MAX_RETRIES=5 # Maximum read tries (default 10)
2287 envvar hint.ppc.0.at="isa"
2288 envvar hint.ppc.0.irq="7"
2297 # General Purpose I/O pins
2298 device dwgpio # Synopsys DesignWare APB GPIO Controller
2299 device gpio # gpio interfaces and bus support
2300 device gpiobacklight # sysctl control of gpio-based backlight
2301 device gpioiic # i2c via gpio bitbang
2302 device gpiokeys # kbd(4) glue for gpio-based key input
2303 device gpioled # led(4) gpio glue
2304 device gpiopower # event handler for gpio-based powerdown
2305 device gpiopps # Pulse per second input from gpio pin
2306 device gpioregulator # extres/regulator glue for gpio pin
2307 device gpiospi # SPI via gpio bitbang
2308 device gpioths # 1-wire temp/humidity sensor on gpio pin
2310 # Pulse width modulation
2311 device pwmbus # pwm interface and bus support
2312 device pwmc # userland control access to pwm outputs
2315 # Etherswitch framework and drivers
2317 # etherswitch The etherswitch(4) framework
2318 # miiproxy Proxy device for miibus(4) functionality
2320 # Switch hardware support:
2321 # arswitch Atheros switches
2322 # ip17x IC+ 17x family switches
2323 # rtl8366r Realtek RTL8366 switches
2324 # ukswitch Multi-PHY switches
2333 # Kernel BOOTP support
2335 options BOOTP # Use BOOTP to obtain IP address/hostname
2336 # Requires NFSCL and NFS_ROOT
2337 options BOOTP_NFSROOT # NFS mount root filesystem using BOOTP info
2338 options BOOTP_NFSV3 # Use NFS v3 to NFS mount root
2339 options BOOTP_COMPAT # Workaround for broken bootp daemons.
2340 options BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2341 options BOOTP_BLOCKSIZE=8192 # Override NFS block size
2344 # Enable software watchdog routines, even if hardware watchdog is present.
2345 # By default, software watchdog timer is enabled only if no hardware watchdog
2351 # Add the software deadlock resolver thread.
2356 # Disable swapping of stack pages. This option removes all
2357 # code which actually performs swapping, so it's not possible to turn
2358 # it back on at run-time.
2360 # This is sometimes usable for systems which don't have any swap space
2361 # (see also sysctl "vm.disable_swapspace_pageouts")
2363 #options NO_SWAPPING
2365 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
2366 # for sendfile(2) that are used to map file VM pages, and normally
2367 # default to a quantity that is roughly 16*MAXUSERS+512. You would
2368 # typically want about 4 of these for each simultaneous file send.
2370 options NSFBUFS=1024
2373 # Enable extra debugging code for locks. This stores the filename and
2374 # line of whatever acquired the lock in the lock itself, and changes a
2375 # number of function calls to pass around the relevant data. This is
2376 # not at all useful unless you are debugging lock code. Note that
2377 # modules should be recompiled as this option modifies KBI.
2381 #####################################################################
2383 device hid # Generic HID support
2384 options HID_DEBUG # enable debug msgs
2385 device hidbus # HID bus
2386 device hidmap # HID to evdev mapping
2387 device hidraw # Raw access driver
2388 options HIDRAW_MAKE_UHID_ALIAS # install /dev/uhid alias
2389 device hconf # Multitouch configuration TLC
2390 device hcons # Consumer controls
2391 device hgame # Generic game controllers
2392 device hkbd # HID keyboard
2393 device hms # HID mouse
2394 device hmt # HID multitouch (MS-compatible)
2395 device hpen # Generic pen driver
2396 device hsctrl # System controls
2397 device ps4dshock # Sony PS4 DualShock 4 gamepad driver
2398 device xb360gp # XBox 360 gamepad driver
2400 #####################################################################
2412 # General USB code (mandatory for USB)
2415 # USB Double Bulk Pipe devices
2417 # USB temperature meter
2421 # Human Interface Device (anything with buttons and dials)
2427 # USB mass storage driver (Requires scbus and da)
2429 # USB mass storage driver for device-side mode
2431 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
2440 # eGalax USB touch screen
2442 # Diamond Rio 500 MP3 player
2444 # HID-over-USB driver
2448 # USB serial support
2450 # USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
2452 # USB support for Technologies ARK3116 based serial adapters
2454 # USB support for Belkin F5U103 and compatible serial adapters
2456 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
2458 # USB support for some Windows CE based serial communication.
2460 # USB support for Prolific PL-2303 serial adapters
2462 # USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
2464 # USB Visor and Palm devices
2466 # USB serial support for DDI pocket's PHS
2469 # USB ethernet support
2471 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
2472 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2473 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2477 # ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2478 # LinkSys USB200M and various other adapters.
2480 # ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
2484 # Devices which communicate using Ethernet over USB, particularly
2485 # Communication Device Class (CDC) Ethernet specification. Supports
2486 # Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
2489 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
2490 # and Netmate II, and the Belkin F5U111.
2493 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2494 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2495 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
2496 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
2497 # and 2104USB, and the Corega USB-T.
2500 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
2501 # and the GREEN HOUSE GH-USB100B.
2504 # Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2507 # RealTek RTL8152/RTL8153 USB Ethernet driver
2510 # Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
2513 # HSxPA devices from Option N.V
2516 # Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
2519 # Ralink Technology RT2501USB/RT2601USB wireless driver
2521 # Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
2524 # Atheros AR5523 wireless driver
2527 # Conexant/Intersil PrismGT wireless driver
2530 # Ralink Technology RT2500USB wireless driver
2533 # RNDIS USB ethernet driver
2535 # Realtek RTL8187B/L wireless driver
2538 # ZyDas ZD1211/ZD1211B wireless driver
2541 # Sierra USB wireless driver
2545 # debugging options for the USB subsystem
2551 options UKBD_DFLT_KEYMAP # specify the built-in keymap
2552 makeoptions UKBD_DFLT_KEYMAP=jp.106
2554 # options for uplcom:
2555 options UPLCOM_INTR_INTERVAL=100 # interrupt pipe interval
2558 # options for uvscom:
2559 options UVSCOM_DEFAULT_OPKTSIZE=8 # default output packet size
2560 options UVSCOM_INTR_INTERVAL=100 # interrupt pipe interval
2563 #####################################################################
2566 device firewire # FireWire bus code
2567 device sbp # SCSI over Firewire (Requires scbus and da)
2568 device sbp_targ # SBP-2 Target mode (Requires scbus and targ)
2569 device fwe # Ethernet over FireWire (non-standard!)
2570 device fwip # IP over FireWire (RFC2734 and RFC3146)
2572 #####################################################################
2573 # dcons support (Dumb Console Device)
2575 device dcons # dumb console driver
2576 device dcons_crom # FireWire attachment
2577 options DCONS_BUF_SIZE=16384 # buffer size
2578 options DCONS_POLL_HZ=100 # polling rate
2579 options DCONS_FORCE_CONSOLE=0 # force to be the primary console
2580 options DCONS_FORCE_GDB=1 # force to be the gdb device
2582 #####################################################################
2585 # This is a port of the OpenBSD crypto framework. Include this when
2586 # configuring IPSEC and when you have a h/w crypto device to accelerate
2587 # user applications that link to OpenSSL.
2589 # Drivers are ports from OpenBSD with some simple enhancements that have
2590 # been fed back to OpenBSD.
2592 device crypto # core crypto support
2594 # Only install the cryptodev device if you are running tests, or know
2595 # specifically why you need it. In most cases, it is not needed and
2596 # will make things slower.
2597 device cryptodev # /dev/crypto for access to h/w
2599 device rndtest # FIPS 140-2 entropy tester
2601 device ccr # Chelsio T6
2603 device hifn # Hifn 7951, 7781, etc.
2604 options HIFN_DEBUG # enable debugging support: hw.hifn.debug
2605 options HIFN_RNDTEST # enable rndtest support
2607 #####################################################################
2611 # Embedded system options:
2613 # An embedded system might want to run something other than init.
2614 options INIT_PATH=/sbin/init:/rescue/init
2617 options BUS_DEBUG # enable newbus debugging
2618 options DEBUG_VFS_LOCKS # enable VFS lock debugging
2619 options SOCKBUF_DEBUG # enable sockbuf last record/mb tail checking
2620 options IFMEDIA_DEBUG # enable debugging in net/if_media.c
2625 # Make the SYSINIT process performed by mi_startup() verbose. This is very
2626 # useful when porting to a new architecture. If DDB is also enabled, this
2627 # will print function names instead of addresses. If defined with a value
2628 # of zero, the verbose code is compiled-in but disabled by default, and can
2629 # be enabled with the debug.verbose_sysinit=1 tunable.
2630 options VERBOSE_SYSINIT
2632 #####################################################################
2633 # SYSV IPC KERNEL PARAMETERS
2635 # Maximum number of System V semaphores that can be used on the system at
2639 # Total number of semaphores system wide
2642 # Total number of undo structures in system
2645 # Maximum number of System V semaphores that can be used by a single process
2649 # Maximum number of operations that can be outstanding on a single System V
2650 # semaphore at one time.
2653 # Maximum number of undo operations that can be outstanding on a single
2654 # System V semaphore at one time.
2657 # Maximum number of shared memory pages system wide.
2660 # Maximum size, in bytes, of a single System V shared memory region.
2661 options SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2662 options SHMMAXPGS=1025
2664 # Minimum size, in bytes, of a single System V shared memory region.
2667 # Maximum number of shared memory regions that can be used on the system
2671 # Maximum number of System V shared memory regions that can be attached to
2672 # a single process at one time.
2675 # Set the amount of time (in seconds) the system will wait before
2676 # rebooting automatically when a kernel panic occurs. If set to (-1),
2677 # the system will wait indefinitely until a key is pressed on the
2679 options PANIC_REBOOT_WAIT_TIME=16
2681 # Attempt to bypass the buffer cache and put data directly into the
2682 # userland buffer for read operation when O_DIRECT flag is set on the
2683 # file. Both offset and length of the read operation must be
2684 # multiples of the physical media sector size.
2688 # Specify a lower limit for the number of swap I/O buffers. They are
2689 # (among other things) used when bypassing the buffer cache due to
2690 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
2692 options NSWBUF_MIN=120
2694 #####################################################################
2696 # More undocumented options for linting.
2697 # Note that documenting these is not considered an affront.
2699 options CAM_DEBUG_DELAY
2703 # Kernel filelock debugging.
2706 # System V compatible message queues
2707 # Please note that the values provided here are used to test kernel
2708 # building. The defaults in the sources provide almost the same numbers.
2709 # MSGSSZ must be a power of 2 between 8 and 1024.
2710 options MSGMNB=2049 # Max number of chars in queue
2711 options MSGMNI=41 # Max number of message queue identifiers
2712 options MSGSEG=2049 # Max number of message segments
2713 options MSGSSZ=16 # Size of a message segment
2714 options MSGTQL=41 # Max number of messages in system
2716 options NBUF=512 # Number of buffer headers
2718 options SC_DEBUG_LEVEL=5 # Syscons debug level
2719 options SC_RENDER_DEBUG # syscons rendering debugging
2721 options VFS_BIO_DEBUG # VFS buffer I/O debugging
2723 options KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
2724 options KSTACK_USAGE_PROF
2726 # Adaptec Array Controller driver options
2727 options AAC_DEBUG # Debugging levels:
2728 # 0 - quiet, only emit warnings
2729 # 1 - noisy, emit major function
2730 # points and things done
2731 # 2 - extremely noisy, emit trace
2732 # items in loops, etc.
2734 # Resource Accounting
2740 # Yet more undocumented options for linting.
2741 options MAXFILES=999
2743 # Random number generator
2744 # Alternative algorithm.
2745 #options RANDOM_FENESTRASX
2746 # Allow the CSPRNG algorithm to be loaded as a module.
2747 #options RANDOM_LOADABLE
2748 # Select this to allow high-rate but potentially expensive
2749 # harvesting of Slab-Allocator entropy. In very high-rate
2750 # situations the value of doing this is dubious at best.
2751 options RANDOM_ENABLE_UMA # slab allocator
2753 # Select this to allow high-rate but potentially expensive
2754 # harvesting of of the m_next pointer in the mbuf. Note that
2755 # the m_next pointer is NULL except when receiving > 4K
2756 # jumbo frames or sustained bursts by way of LRO. Thus in
2757 # the common case it is stirring zero in to the entropy
2758 # pool. In cases where it is not NULL it is pointing to one
2759 # of a small (in the thousands to 10s of thousands) number
2760 # of 256 byte aligned mbufs. Hence it is, even in the best
2761 # case, a poor source of entropy. And in the absence of actual
2762 # runtime analysis of entropy collection may mislead the user in
2763 # to believe that substantially more entropy is being collected
2764 # than in fact is - leading to a different class of security
2765 # risk. In high packet rate situations ethernet entropy
2766 # collection is also very expensive, possibly leading to as
2767 # much as a 50% drop in packets received.
2768 # This option is present to maintain backwards compatibility
2769 # if desired, however it cannot be recommended for use in any
2771 options RANDOM_ENABLE_ETHER # ether_input
2773 # Module to enable execution of application via emulators like QEMU
2774 options IMGACT_BINMISC
2776 # zlib I/O stream support
2777 # This enables support for compressed core dumps.
2781 # This enables support for Zstd compressed core dumps, GEOM_UZIP images,
2782 # and is required by zfs if statically linked.
2786 options BHND_LOGLEVEL # Logging threshold level
2789 device evdev # input event device support
2790 options EVDEV_SUPPORT # evdev support in legacy drivers
2791 options EVDEV_DEBUG # enable event debug msgs
2792 device uinput # install /dev/uinput cdev
2793 options UINPUT_DEBUG # enable uinput debug msgs
2795 # Encrypted kernel crash dumps.
2798 # Serial Peripheral Interface (SPI) support.
2799 device spibus # Bus support.
2800 device at45d # DataFlash driver
2802 device mx25l # SPIFlash driver
2804 device spigen # Generic access to SPI devices from userland.
2805 # Enable legacy /dev/spigenN name aliases for /dev/spigenX.Y devices.
2806 options SPIGEN_LEGACY_CDEVNAME # legacy device names for spigen
2808 # Compression supports.
2809 device zlib # gzip/zlib compression/decompression library
2810 device xz # xz_embedded LZMA de-compression library
2812 # Kernel support for stats(3).