2 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
4 # Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
5 # 'makeoptions', 'hints', etc. go into the kernel configuration that you
8 # Lines that begin with 'envvar hint.' should go into your hints file.
9 # See /boot/device.hints and/or the 'hints' config(8) directive.
11 # Please use ``make LINT'' to create an old-style LINT file if you want to
12 # do kernel test-builds.
14 # This file contains machine independent kernel configuration notes. For
15 # machine dependent notes, look in /sys/<arch>/conf/NOTES.
19 # NOTES conventions and style guide:
21 # Large block comments should begin and end with a line containing only a
24 # To describe a particular object, a block comment (if it exists) should
25 # come first. Next should come device, options, and hints lines in that
26 # order. All device and option lines must be described by a comment that
27 # doesn't just expand the device or option name. Use only a concise
28 # comment on the same line if possible. Very detailed descriptions of
29 # devices and subsystems belong in man pages.
31 # A space followed by a tab separates 'options' from an option name. Two
32 # spaces followed by a tab separate 'device' from a device name. Comments
33 # after an option or device should use one space after the comment character.
34 # To comment out a negative option that disables code and thus should not be
35 # enabled for LINT builds, precede 'options' with "#!".
39 # This is the ``identification'' of the kernel. Usually this should
40 # be the same as the name of your kernel.
45 # The `maxusers' parameter controls the static sizing of a number of
46 # internal system tables by a formula defined in subr_param.c.
47 # Omitting this parameter or setting it to 0 will cause the system to
48 # auto-size based on physical memory.
52 # To statically compile in device wiring instead of /boot/device.hints
53 #hints "LINT.hints" # Default places to look for devices.
55 # Use the following to compile in values accessible to the kernel
56 # through getenv() (or kenv(1) in userland). The format of the file
57 # is 'variable=value', see kenv(1)
62 # The `makeoptions' parameter allows variables to be passed to the
63 # generated Makefile in the build area.
65 # CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
66 # after most other flags. Here we use it to inhibit use of non-optimal
67 # gcc built-in functions (e.g., memcmp).
69 # DEBUG happens to be magic.
70 # The following is equivalent to 'config -g KERNELNAME' and creates
71 # 'kernel.debug' compiled with -g debugging as well as a normal
72 # 'kernel'. Use 'make install.debug' to install the debug kernel
73 # but that isn't normally necessary as the debug symbols are not loaded
74 # by the kernel and are not useful there anyway.
76 # KERNEL can be overridden so that you can change the default name of your
79 # MODULES_OVERRIDE can be used to limit modules built to a specific list.
81 makeoptions CONF_CFLAGS=-fno-builtin #Don't allow use of memcmp, etc.
82 #makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
83 #makeoptions KERNEL=foo #Build kernel "foo" and install "/foo"
84 # Only build ext2fs module plus those parts of the sound system I need.
85 #makeoptions MODULES_OVERRIDE="ext2fs sound/sound sound/driver/maestro3"
86 makeoptions DESTDIR=/tmp
89 # FreeBSD processes are subject to certain limits to their consumption
90 # of system resources. See getrlimit(2) for more details. Each
91 # resource limit has two values, a "soft" limit and a "hard" limit.
92 # The soft limits can be modified during normal system operation, but
93 # the hard limits are set at boot time. Their default values are
94 # in sys/<arch>/include/vmparam.h. There are two ways to change them:
96 # 1. Set the values at kernel build time. The options below are one
97 # way to allow that limit to grow to 1GB. They can be increased
98 # further by changing the parameters:
100 # 2. In /boot/loader.conf, set the tunables kern.maxswzone,
101 # kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
102 # kern.dflssiz, kern.maxssiz and kern.sgrowsiz.
104 # The options in /boot/loader.conf override anything in the kernel
105 # configuration file. See the function init_param1 in
106 # sys/kern/subr_param.c for more details.
109 options MAXDSIZ=(1024UL*1024*1024)
110 options MAXSSIZ=(128UL*1024*1024)
111 options DFLDSIZ=(1024UL*1024*1024)
114 # BLKDEV_IOSIZE sets the default block size used in user block
115 # device I/O. Note that this value will be overridden by the label
116 # when specifying a block device from a label with a non-0
117 # partition blocksize. The default is PAGE_SIZE.
119 options BLKDEV_IOSIZE=8192
122 # MAXPHYS and DFLTPHYS
124 # These are the maximal and safe 'raw' I/O block device access sizes.
125 # Reads and writes will be split into MAXPHYS chunks for known good
126 # devices and DFLTPHYS for the rest. Some applications have better
127 # performance with larger raw I/O access sizes. Note that certain VM
128 # parameters are derived from these values and making them too large
129 # can make an unbootable kernel.
131 # The defaults are 64K and 128K respectively.
132 options DFLTPHYS=(64*1024)
133 options MAXPHYS=(128*1024)
136 # This allows you to actually store this configuration file into
137 # the kernel binary itself. See config(8) for more details.
139 options INCLUDE_CONFIG_FILE # Include this file in kernel
142 # Compile-time defaults for various boot parameters
144 options BOOTVERBOSE=1
145 options BOOTHOWTO=RB_MULTIPLE
148 # Compile-time defaults for dmesg boot tagging
150 # Default boot tag; may use 'kern.boot_tag' loader tunable to override. The
151 # current boot's tag is also exposed via the 'kern.boot_tag' sysctl.
152 options BOOT_TAG=\"\"
153 # Maximum boot tag size the kernel's static buffer should accommodate. Maximum
154 # size for both BOOT_TAG and the assocated tunable.
155 options BOOT_TAG_SZ=32
157 options GEOM_BDE # Disk encryption.
158 options GEOM_CACHE # Disk cache.
159 options GEOM_CONCAT # Disk concatenation.
160 options GEOM_ELI # Disk encryption.
161 options GEOM_GATE # Userland services.
162 options GEOM_JOURNAL # Journaling.
163 options GEOM_LABEL # Providers labelization.
164 options GEOM_LINUX_LVM # Linux LVM2 volumes
165 options GEOM_MAP # Map based partitioning
166 options GEOM_MIRROR # Disk mirroring.
167 options GEOM_MULTIPATH # Disk multipath
168 options GEOM_NOP # Test class.
169 options GEOM_PART_APM # Apple partitioning
170 options GEOM_PART_BSD # BSD disklabel
171 options GEOM_PART_BSD64 # BSD disklabel64
172 options GEOM_PART_EBR # Extended Boot Records
173 options GEOM_PART_GPT # GPT partitioning
174 options GEOM_PART_LDM # Logical Disk Manager
175 options GEOM_PART_MBR # MBR partitioning
176 options GEOM_RAID # Soft RAID functionality.
177 options GEOM_RAID3 # RAID3 functionality.
178 options GEOM_SHSEC # Shared secret.
179 options GEOM_STRIPE # Disk striping.
180 options GEOM_UZIP # Read-only compressed disks
181 options GEOM_VINUM # Vinum logical volume manager
182 options GEOM_VIRSTOR # Virtual storage.
183 options GEOM_ZERO # Performance testing helper.
186 # The root device and filesystem type can be compiled in;
187 # this provides a fallback option if the root device cannot
188 # be correctly guessed by the bootstrap code, or an override if
189 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
191 options ROOTDEVNAME=\"ufs:da0s2e\"
194 #####################################################################
197 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory. These options
198 # select which scheduler is compiled in.
200 # SCHED_4BSD is the historical, proven, BSD scheduler. It has a global run
201 # queue and no CPU affinity which makes it suboptimal for SMP. It has very
202 # good interactivity and priority selection.
204 # SCHED_ULE provides significant performance advantages over 4BSD on many
205 # workloads on SMP machines. It supports cpu-affinity, per-cpu runqueues
206 # and scheduler locks. It also has a stronger notion of interactivity
207 # which leads to better responsiveness even on uniprocessor machines. This
208 # is the default scheduler.
210 # SCHED_STATS is a debugging option which keeps some stats in the sysctl
211 # tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
217 #####################################################################
220 # SMP enables building of a Symmetric MultiProcessor Kernel.
223 options SMP # Symmetric MultiProcessor Kernel
225 # EARLY_AP_STARTUP releases the Application Processors earlier in the
226 # kernel startup process (before devices are probed) rather than at the
227 # end. This is a temporary option for use during the transition from
228 # late to early AP startup.
229 options EARLY_AP_STARTUP
231 # MAXCPU defines the maximum number of CPUs that can boot in the system.
232 # A default value should be already present, for every architecture.
235 # NUMA enables use of Non-Uniform Memory Access policies in various kernel
239 # MAXMEMDOM defines the maximum number of memory domains that can boot in the
240 # system. A default value should already be defined by every architecture.
243 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
244 # if the thread that currently owns the mutex is executing on another
245 # CPU. This behavior is enabled by default, so this option can be used
247 options NO_ADAPTIVE_MUTEXES
249 # ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
250 # if the thread that currently owns the rwlock is executing on another
251 # CPU. This behavior is enabled by default, so this option can be used
253 options NO_ADAPTIVE_RWLOCKS
255 # ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
256 # currently owns the sx lock is executing on another CPU.
257 # This behavior is enabled by default, so this option can be used to
259 options NO_ADAPTIVE_SX
261 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
262 # operation rather than inlining the simple cases. This can be used to
263 # shrink the size of the kernel text segment. Note that this behavior is
264 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
265 # and WITNESS options.
266 options MUTEX_NOINLINE
268 # RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
269 # operation rather than inlining the simple cases. This can be used to
270 # shrink the size of the kernel text segment. Note that this behavior is
271 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
272 # and WITNESS options.
273 options RWLOCK_NOINLINE
275 # SX_NOINLINE forces sx lock operations to call functions to perform each
276 # operation rather than inlining the simple cases. This can be used to
277 # shrink the size of the kernel text segment. Note that this behavior is
278 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
279 # and WITNESS options.
282 # SMP Debugging Options:
284 # CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
285 # structure used as backend in callout(9).
286 # PREEMPTION allows the threads that are in the kernel to be preempted by
287 # higher priority [interrupt] threads. It helps with interactivity
288 # and allows interrupt threads to run sooner rather than waiting.
289 # FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
290 # threads. Its sole use is to expose race conditions and other
291 # bugs during development. Enabling this option will reduce
292 # performance and increase the frequency of kernel panics by
293 # design. If you aren't sure that you need it then you don't.
294 # Relies on the PREEMPTION option. DON'T TURN THIS ON.
295 # SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
296 # used to hold active sleep queues as well as sleep wait message
298 # TURNSTILE_PROFILING enables rudimentary profiling of the hash table
299 # used to hold active lock queues.
300 # UMTX_PROFILING enables rudimentary profiling of the hash table used
301 # to hold active lock queues.
302 # WITNESS enables the witness code which detects deadlocks and cycles
303 # during locking operations.
304 # WITNESS_KDB causes the witness code to drop into the kernel debugger if
305 # a lock hierarchy violation occurs or if locks are held when going to
307 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
309 options FULL_PREEMPTION
312 options WITNESS_SKIPSPIN
314 # LOCK_PROFILING - Profiling locks. See LOCK_PROFILING(9) for details.
315 options LOCK_PROFILING
316 # Set the number of buffers and the hash size. The hash size MUST be larger
317 # than the number of buffers. Hash size should be prime.
318 options MPROF_BUFFERS="1536"
319 options MPROF_HASH_SIZE="1543"
321 # Profiling for the callout(9) backend.
322 options CALLOUT_PROFILING
324 # Profiling for internal hash tables.
325 options SLEEPQUEUE_PROFILING
326 options TURNSTILE_PROFILING
327 options UMTX_PROFILING
329 # Debugging traces for epoch(9) misuse
332 #####################################################################
333 # COMPATIBILITY OPTIONS
338 # Note that as a general rule, COMPAT_FREEBSD<n> depends on
339 # COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
341 # Enable FreeBSD4 compatibility syscalls
342 options COMPAT_FREEBSD4
344 # Enable FreeBSD5 compatibility syscalls
345 options COMPAT_FREEBSD5
347 # Enable FreeBSD6 compatibility syscalls
348 options COMPAT_FREEBSD6
350 # Enable FreeBSD7 compatibility syscalls
351 options COMPAT_FREEBSD7
353 # Enable FreeBSD9 compatibility syscalls
354 options COMPAT_FREEBSD9
356 # Enable FreeBSD10 compatibility syscalls
357 options COMPAT_FREEBSD10
359 # Enable FreeBSD11 compatibility syscalls
360 options COMPAT_FREEBSD11
362 # Enable FreeBSD12 compatibility syscalls
363 options COMPAT_FREEBSD12
365 # Enable FreeBSD13 compatibility syscalls
366 options COMPAT_FREEBSD13
368 # Enable FreeBSD14 compatibility syscalls
369 options COMPAT_FREEBSD14
371 # Enable Linux Kernel Programming Interface
372 options COMPAT_LINUXKPI
375 # These three options provide support for System V Interface
376 # Definition-style interprocess communication, in the form of shared
377 # memory, semaphores, and message queues, respectively.
384 #####################################################################
388 # Compile with kernel debugger related code.
393 # Print a stack trace of the current thread on the console for a panic.
398 # Don't enter the debugger for a panic. Intended for unattended operation
399 # where you may want to enter the debugger from the console, but still want
400 # the machine to recover from a panic.
402 options KDB_UNATTENDED
405 # Enable the ddb debugger backend.
410 # Print the numerical value of symbols in addition to the symbolic
416 # Enable the remote gdb debugger backend.
421 # Trashes list pointers when they become invalid (i.e., the element is
422 # removed from a list). Relatively inexpensive to enable.
424 options QUEUE_MACRO_DEBUG_TRASH
427 # Stores information about the last caller to modify the list object
428 # in the list object. Requires additional memory overhead.
430 #options QUEUE_MACRO_DEBUG_TRACE
433 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
434 # contents of the registered sysctl nodes on the console. It is disabled by
435 # default because it generates excessively verbose console output that can
436 # interfere with serial console operation.
441 # Enable textdump by default, this disables kernel core dumps.
443 options TEXTDUMP_PREFERRED
446 # Enable extra debug messages while performing textdumps.
448 options TEXTDUMP_VERBOSE
451 # NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
453 options NO_SYSCTL_DESCR
456 # MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
457 # allocations that are smaller than a page. The purpose is to isolate
458 # different malloc types into hash classes, so that any buffer
459 # overruns or use-after-free will usually only affect memory from
460 # malloc types in that hash class. This is purely a debugging tool;
461 # by varying the hash function and tracking which hash class was
462 # corrupted, the intersection of the hash classes from each instance
463 # will point to a single malloc type that is being misused. At this
464 # point inspection or memguard(9) can be used to catch the offending
467 options MALLOC_DEBUG_MAXZONES=8
470 # DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
471 # for the kernel used to detect modify-after-free scenarios. See the
472 # memguard(9) man page for more information on usage.
474 options DEBUG_MEMGUARD
477 # DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
480 options DEBUG_REDZONE
483 # EARLY_PRINTF enables support for calling a special printf (eprintf)
484 # very early in the kernel (before cn_init() has been called). This
485 # should only be used for debugging purposes early in boot. Normally,
486 # it is not defined. It is commented out here because this feature
487 # isn't generally available. And the required eputc() isn't defined.
489 #options EARLY_PRINTF
492 # KTRACE enables the system-call tracing facility ktrace(2). To be more
493 # SMP-friendly, KTRACE uses a worker thread to process most trace events
494 # asynchronously to the thread generating the event. This requires a
495 # pre-allocated store of objects representing trace events. The
496 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
497 # The size of the pool can be adjusted both at boottime and runtime via
498 # the kern.ktrace_request_pool tunable and sysctl.
500 options KTRACE #kernel tracing
501 options KTRACE_REQUEST_POOL=101
504 # KTR is a kernel tracing facility imported from BSD/OS. It is
505 # enabled with the KTR option. KTR_ENTRIES defines the number of
506 # entries in the circular trace buffer; it may be an arbitrary number.
507 # KTR_BOOT_ENTRIES defines the number of entries during the early boot,
508 # before malloc(9) is functional.
509 # KTR_COMPILE defines the mask of events to compile into the kernel as
510 # defined by the KTR_* constants in <sys/ktr.h>. KTR_MASK defines the
511 # initial value of the ktr_mask variable which determines at runtime
512 # what events to trace. KTR_CPUMASK determines which CPU's log
513 # events, with bit X corresponding to CPU X. The layout of the string
514 # passed as KTR_CPUMASK must match a series of bitmasks each of them
515 # separated by the "," character (ie:
516 # KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF). KTR_VERBOSE enables
517 # dumping of KTR events to the console by default. This functionality
518 # can be toggled via the debug.ktr_verbose sysctl and defaults to off
519 # if KTR_VERBOSE is not defined. See ktr(4) and ktrdump(8) for details.
522 options KTR_BOOT_ENTRIES=1024
523 options KTR_ENTRIES=(128*1024)
524 options KTR_COMPILE=(KTR_ALL)
525 options KTR_MASK=KTR_INTR
526 options KTR_CPUMASK=0x3
530 # ALQ(9) is a facility for the asynchronous queuing of records from the kernel
531 # to a vnode, and is employed by services such as ktr(4) to produce trace
532 # files based on a kernel event stream. Records are written asynchronously
533 # in a worker thread.
539 # The INVARIANTS option is used in a number of source files to enable
540 # extra sanity checking of internal structures. This support is not
541 # enabled by default because of the extra time it would take to check
542 # for these conditions, which can only occur as a result of
543 # programming errors.
548 # The INVARIANT_SUPPORT option makes us compile in support for
549 # verifying some of the internal structures. It is a prerequisite for
550 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
551 # called. The intent is that you can set 'INVARIANTS' for single
552 # source files (by changing the source file or specifying it on the
553 # command line) if you have 'INVARIANT_SUPPORT' enabled. Also, if you
554 # wish to build a kernel module with 'INVARIANTS', then adding
555 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
556 # infrastructure without the added overhead.
558 options INVARIANT_SUPPORT
561 # The KASSERT_PANIC_OPTIONAL option allows kasserts to fire without
562 # necessarily inducing a panic. Panic is the default behavior, but
563 # runtime options can configure it either entirely off, or off with a
566 options KASSERT_PANIC_OPTIONAL
569 # The DIAGNOSTIC option is used to enable extra debugging information
570 # and invariants checking. The added checks are too expensive or noisy
571 # for an INVARIANTS kernel and thus are disabled by default. It is
572 # expected that a kernel configured with DIAGNOSTIC will also have the
573 # INVARIANTS option enabled.
578 # REGRESSION causes optional kernel interfaces necessary only for regression
579 # testing to be enabled. These interfaces may constitute security risks
580 # when enabled, as they permit processes to easily modify aspects of the
581 # run-time environment to reproduce unlikely or unusual (possibly normally
582 # impossible) scenarios.
587 # This option lets some drivers co-exist that can't co-exist in a running
588 # system. This is used to be able to compile all kernel code in one go for
589 # quality assurance purposes (like this file, which the option takes it name
592 options COMPILING_LINT
595 # STACK enables the stack(9) facility, allowing the capture of kernel stack
596 # for the purpose of procinfo(1), etc. stack(9) will also be compiled in
597 # automatically if DDB(4) is compiled into the kernel.
602 # The NUM_CORE_FILES option specifies the limit for the number of core
603 # files generated by a particular process, when the core file format
604 # specifier includes the %I pattern. Since we only have 1 character for
605 # the core count in the format string, meaning the range will be 0-9, the
606 # maximum value allowed for this option is 10.
607 # This core file limit can be adjusted at runtime via the debug.ncores
610 options NUM_CORE_FILES=5
613 # The TSLOG option enables timestamped logging of events, especially
614 # function entries/exits, in order to track the time spent by the kernel.
615 # In particular, this is useful when investigating the early boot process,
616 # before it is possible to use more sophisticated tools like DTrace.
617 # The TSLOGSIZE option controls the size of the (preallocated, fixed
618 # length) buffer used for storing these events (default: 262144 records).
619 # The TSLOG_PAGEZERO option enables TSLOG of pmap_zero_page; this must be
620 # enabled separately since it typically generates too many records to be
623 # For security reasons the TSLOG option should not be enabled on systems
624 # used in production.
627 options TSLOGSIZE=262144
630 #####################################################################
631 # PERFORMANCE MONITORING OPTIONS
634 # The hwpmc driver that allows the use of in-CPU performance monitoring
635 # counters for performance monitoring. The base kernel needs to be configured
636 # with the 'options' line, while the hwpmc device can be either compiled
637 # in or loaded as a loadable kernel module.
639 # Additional configuration options may be required on specific architectures,
640 # please see hwpmc(4).
642 device hwpmc # Driver (also a loadable module)
644 options HWPMC_HOOKS # Other necessary kernel hooks
647 #####################################################################
653 options INET #Internet communications protocols
654 options INET6 #IPv6 communications protocols
656 # Note if you include INET/INET6 or both options
657 # You *must* define at least one of the congestion control
658 # options or the compile will fail. GENERIC defines
659 # options CC_CUBIC. You may want to specify a default
660 # if multiple congestion controls are compiled in.
661 # The string in default is the name of the
662 # cc module as it would appear in the sysctl for
663 # setting the default. The code defines CUBIC
664 # as default, or the sole cc_module compiled in.
674 options CC_DEFAULT=\"cubic\"
675 options RATELIMIT # TX rate limiting support
677 options ROUTETABLES=2 # allocated fibs up to 65536. default is 1.
678 # but that would be a bad idea as they are large.
680 options TCP_OFFLOAD # TCP offload support.
681 options TCP_RFC7413 # TCP Fast Open
685 # In order to enable IPSEC you MUST also add device crypto to
686 # your kernel configuration
687 options IPSEC #IP security (requires device crypto)
689 # Option IPSEC_SUPPORT does not enable IPsec, but makes it possible to
690 # load it as a kernel module. You still MUST add device crypto to your kernel
692 options IPSEC_SUPPORT
693 #options IPSEC_DEBUG #debug for IP security
695 # Alternative TCP stacks
699 # TLS framing and encryption/decryption of data over TCP sockets.
700 options KERN_TLS # TLS transmit and receive offload
702 # Netlink kernel/user<>kernel/user messaging interface
707 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
709 options NETSMB #SMB/CIFS requester
711 # mchain library. It can be either loaded as KLD or compiled into kernel
714 # libalias library, performing NAT
718 # SCTP is a NEW transport protocol defined by
719 # RFC2960 updated by RFC3309 and RFC3758.. and
720 # soon to have a new base RFC and many many more
721 # extensions. This release supports all the extensions
722 # including many drafts (most about to become RFC's).
723 # It is the reference implementation of SCTP
724 # and is quite well tested.
726 # Note YOU MUST have both INET and INET6 defined.
727 # You don't have to enable V6, but SCTP is
728 # dual stacked and so far we have not torn apart
729 # the V6 and V4.. since an association can span
730 # both a V6 and V4 address at the SAME time :-)
732 # The SCTP_SUPPORT option does not enable SCTP, but provides the necessary
733 # support for loading SCTP as a loadable kernel module.
738 # There are bunches of options:
739 # this one turns on all sorts of
740 # nastily printing that you can
741 # do. It's all controlled by a
742 # bit mask (settable by socket opt and
743 # by sysctl). Including will not cause
744 # logging until you set the bits.. but it
745 # can be quite verbose.. so without this
746 # option we don't do any of the tests for
747 # bits and prints.. which makes the code run
748 # faster.. if you are not debugging don't use.
752 # All that options after that turn on specific types of
753 # logging. You can monitor CWND growth, flight size
754 # and all sorts of things. Go look at the code and
755 # see. I have used this to produce interesting
756 # charts and graphs as well :->
758 # I have not yet committed the tools to get and print
759 # the logs, I will do that eventually .. before then
760 # if you want them send me an email rrs@freebsd.org
761 # You basically must have ktr(4) enabled for these
762 # and you then set the sysctl to turn on/off various
763 # logging bits. Use ktrdump(8) to pull the log and run
764 # it through a display program.. and graphs and other
767 options SCTP_LOCK_LOGGING
768 options SCTP_MBUF_LOGGING
769 options SCTP_MBCNT_LOGGING
770 options SCTP_PACKET_LOGGING
771 options SCTP_LTRACE_CHUNKS
772 options SCTP_LTRACE_ERRORS
774 # altq(9). Enable the base part of the hooks with the ALTQ option.
775 # Individual disciplines must be built into the base system and can not be
776 # loaded as modules at this point. ALTQ requires a stable TSC so if yours is
777 # broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
780 options ALTQ_CBQ # Class Based Queueing
781 options ALTQ_RED # Random Early Detection
782 options ALTQ_RIO # RED In/Out
783 options ALTQ_CODEL # CoDel Active Queueing
784 options ALTQ_HFSC # Hierarchical Packet Scheduler
785 options ALTQ_FAIRQ # Fair Packet Scheduler
786 options ALTQ_CDNR # Traffic conditioner
787 options ALTQ_PRIQ # Priority Queueing
788 options ALTQ_NOPCC # Required if the TSC is unusable
791 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
792 # Individual node types can be enabled with the corresponding option
793 # listed below; however, this is not strictly necessary as netgraph
794 # will automatically load the corresponding KLD module if the node type
795 # is not already compiled into the kernel. Each type below has a
796 # corresponding man page, e.g., ng_async(8).
797 options NETGRAPH # netgraph(4) system
798 options NETGRAPH_DEBUG # enable extra debugging, this
799 # affects netgraph(4) and nodes
801 options NETGRAPH_ASYNC
802 options NETGRAPH_BLUETOOTH # ng_bluetooth(4)
803 options NETGRAPH_BLUETOOTH_HCI # ng_hci(4)
804 options NETGRAPH_BLUETOOTH_L2CAP # ng_l2cap(4)
805 options NETGRAPH_BLUETOOTH_SOCKET # ng_btsocket(4)
806 options NETGRAPH_BLUETOOTH_UBT # ng_ubt(4)
807 options NETGRAPH_BLUETOOTH_UBTBCMFW # ubtbcmfw(4)
809 options NETGRAPH_BRIDGE
811 options NETGRAPH_CHECKSUM
812 options NETGRAPH_CISCO
813 options NETGRAPH_DEFLATE
814 options NETGRAPH_DEVICE
815 options NETGRAPH_ECHO
816 options NETGRAPH_EIFACE
817 options NETGRAPH_ETHER
818 options NETGRAPH_FRAME_RELAY
820 options NETGRAPH_GIF_DEMUX
821 options NETGRAPH_HOLE
822 options NETGRAPH_IFACE
823 options NETGRAPH_IP_INPUT
824 options NETGRAPH_IPFW
825 options NETGRAPH_KSOCKET
826 options NETGRAPH_L2TP
828 options NETGRAPH_MPPC_COMPRESSION
829 options NETGRAPH_MPPC_ENCRYPTION
830 options NETGRAPH_NETFLOW
832 options NETGRAPH_ONE2MANY
833 options NETGRAPH_PATCH
834 options NETGRAPH_PIPE
836 options NETGRAPH_PPPOE
837 options NETGRAPH_PPTPGRE
838 options NETGRAPH_PRED1
839 options NETGRAPH_RFC1490
840 options NETGRAPH_SOCKET
841 options NETGRAPH_SPLIT
843 options NETGRAPH_TCPMSS
847 options NETGRAPH_VLAN
849 # Network stack virtualization.
851 options VNET_DEBUG # debug for VIMAGE
854 # Network interfaces:
855 # The `loop' device is MANDATORY when networking is enabled.
858 # The `ether' device provides generic code to handle
859 # Ethernets; it is MANDATORY when an Ethernet device driver is
863 # The `vlan' device implements the VLAN tagging of Ethernet frames
864 # according to IEEE 802.1Q.
867 # The `vxlan' device implements the VXLAN encapsulation of Ethernet
868 # frames in UDP packets according to RFC7348.
871 # The `wlan' device provides generic code to support 802.11
872 # drivers, including host AP mode; it is MANDATORY for the wi,
873 # and ath drivers and will eventually be required by all 802.11 drivers.
875 options IEEE80211_DEBUG #enable debugging msgs
876 options IEEE80211_SUPPORT_MESH #enable 802.11s D3.0 support
877 options IEEE80211_SUPPORT_TDMA #enable TDMA support
879 # The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
880 # support for WEP, TKIP, and AES-CCMP crypto protocols optionally
881 # used with 802.11 devices that depend on the `wlan' module.
886 # The `wlan_xauth' device provides support for external (i.e. user-mode)
887 # authenticators for use with 802.11 drivers that use the `wlan'
888 # module and support 802.1x and/or WPA security protocols.
891 # The `wlan_acl' device provides a MAC-based access control mechanism
892 # for use with 802.11 drivers operating in ap mode and using the
894 # The 'wlan_amrr' device provides AMRR transmit rate control algorithm
898 # The `bpf' device enables the Berkeley Packet Filter. Be
899 # aware of the legal and administrative consequences of enabling this
900 # option. DHCP requires bpf.
903 # The `netmap' device implements memory-mapped access to network
904 # devices from userspace, enabling wire-speed packet capture and
905 # generation even at 10Gbit/s. Requires support in the device
906 # driver. Supported drivers are ixgbe, e1000, re.
909 # The `disc' device implements a minimal network interface,
910 # which throws away all packets sent and never receives any. It is
911 # included for testing and benchmarking purposes.
914 # The `epair' device implements a virtual back-to-back connected Ethernet
915 # like interface pair.
918 # The `edsc' device implements a minimal Ethernet interface,
919 # which discards all packets sent and receives none.
922 # The `tuntap' device implements (user-)ppp, nos-tun(8) and a pty-like virtual
926 # The `gif' device implements IPv6 over IP4 tunneling,
927 # IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
928 # IPv6 over IPv6 tunneling.
929 # The `gre' device implements GRE (Generic Routing Encapsulation) tunneling,
930 # as specified in the RFC 2784 and RFC 2890.
931 # The `me' device implements Minimal Encapsulation within IPv4 as
932 # specified in the RFC 2004.
933 # The XBONEHACK option allows the same pair of addresses to be configured on
934 # multiple gif interfaces.
940 # The `stf' device implements 6to4 encapsulation.
943 # The pf packet filter consists of three devices:
944 # The `pf' device provides /dev/pf and the firewall code itself.
945 # The `pflog' device provides the pflog0 interface which logs packets.
946 # The `pfsync' device provides the pfsync0 interface used for
947 # synchronization of firewall state tables (over the net).
955 # Common Address Redundancy Protocol. See carp(4) for more details.
961 # Link aggregation interface.
964 # WireGuard interface.
968 # Internet family options:
970 # MROUTING enables the kernel multicast packet forwarder, which works
971 # with mrouted and XORP.
973 # IPFIREWALL enables support for IP firewall construction, in
974 # conjunction with the `ipfw' program. IPFIREWALL_VERBOSE sends
975 # logged packets to the system logger. IPFIREWALL_VERBOSE_LIMIT
976 # limits the number of times a matching entry can be logged.
978 # WARNING: IPFIREWALL defaults to a policy of "deny ip from any to any"
979 # and if you do not add other rules during startup to allow access,
980 # YOU WILL LOCK YOURSELF OUT. It is suggested that you set firewall_type=open
981 # in /etc/rc.conf when first enabling this feature, then refining the
982 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
983 # feature works properly.
985 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
986 # allow everything. Use with care, if a cracker can crash your
987 # firewall machine, they can get to your protected machines. However,
988 # if you are using it as an as-needed filter for specific problems as
989 # they arise, then this may be for you. Changing the default to 'allow'
990 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
993 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''. It
994 # depends on IPFIREWALL if compiled into the kernel.
996 # IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
999 # IPFIREWALL_NAT64 adds support for in kernel NAT64 in ipfw.
1001 # IPFIREWALL_NPTV6 adds support for in kernel NPTv6 in ipfw.
1003 # IPFIREWALL_PMOD adds support for protocols modification module. Currently
1004 # it supports only TCP MSS modification.
1006 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
1007 # packets without touching the TTL). This can be useful to hide firewalls
1008 # from traceroute and similar tools.
1010 # PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
1012 # TCPPCAP enables code which keeps the last n packets sent and received
1015 # TCP_BLACKBOX enables enhanced TCP event logging.
1017 # TCP_HHOOK enables the hhook(9) framework hooks for the TCP stack.
1019 # ROUTE_MPATH provides support for multipath routing.
1021 options MROUTING # Multicast routing
1022 options IPFIREWALL #firewall
1023 options IPFIREWALL_VERBOSE #enable logging to syslogd(8)
1024 options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
1025 options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default
1026 options IPFIREWALL_NAT #ipfw kernel nat support
1027 options IPFIREWALL_NAT64 #ipfw kernel NAT64 support
1028 options IPFIREWALL_NPTV6 #ipfw kernel IPv6 NPT support
1029 options IPDIVERT #divert sockets
1030 options IPFILTER #ipfilter support
1031 options IPFILTER_LOG #ipfilter logging
1032 options IPFILTER_LOOKUP #ipfilter pools
1033 options IPFILTER_DEFAULT_BLOCK #block all packets by default
1034 options IPSTEALTH #support for stealth forwarding
1035 options PF_DEFAULT_TO_DROP #drop everything by default
1037 options TCP_BLACKBOX
1041 # The MBUF_STRESS_TEST option enables options which create
1042 # various random failures / extreme cases related to mbuf
1043 # functions. See mbuf(9) for a list of available test cases.
1044 # MBUF_PROFILING enables code to profile the mbuf chains
1045 # exiting the system (via participating interfaces) and
1046 # return a logarithmic histogram of monitored parameters
1047 # (e.g. packet size, wasted space, number of mbufs in chain).
1048 options MBUF_STRESS_TEST
1049 options MBUF_PROFILING
1051 # Statically link in accept filters
1052 options ACCEPT_FILTER_DATA
1053 options ACCEPT_FILTER_DNS
1054 options ACCEPT_FILTER_HTTP
1056 # TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
1057 # carried in TCP option 19. This option is commonly used to protect
1058 # TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
1059 # This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
1060 # This requires the use of 'device crypto' and either 'options IPSEC' or
1061 # 'options IPSEC_SUPPORT'.
1062 options TCP_SIGNATURE #include support for RFC 2385
1064 # DUMMYNET enables the "dummynet" bandwidth limiter. You need IPFIREWALL
1065 # as well. See dummynet(4) and ipfw(8) for more info. When you run
1066 # DUMMYNET, HZ/kern.hz should be at least 1000 for adequate response.
1069 # The DEBUGNET option enables a basic debug/panic-time networking API. It
1070 # is used by NETDUMP and NETGDB.
1073 # The NETDUMP option enables netdump(4) client support in the kernel.
1074 # This allows a panicking kernel to transmit a kernel dump to a remote host.
1077 # The NETGDB option enables netgdb(4) support in the kernel. This allows a
1078 # panicking kernel to be debugged as a GDB remote over the network.
1081 #####################################################################
1082 # FILESYSTEM OPTIONS
1085 # Only the root filesystem needs to be statically compiled or preloaded
1086 # as module; everything else will be automatically loaded at mount
1087 # time. Some people still prefer to statically compile other
1088 # filesystems as well.
1090 # NB: The UNION filesystem was known to be buggy in the past. It is now
1091 # being actively maintained, although there are still some issues being
1095 # One of these is mandatory:
1096 options FFS #Fast filesystem
1097 options NFSCL #Network File System client
1099 # The rest are optional:
1100 options AUTOFS #Automounter filesystem
1101 options CD9660 #ISO 9660 filesystem
1102 options FDESCFS #File descriptor filesystem
1103 options FUSEFS #FUSEFS support module
1104 options MSDOSFS #MS DOS File System (FAT, FAT32)
1105 options NFSLOCKD #Network Lock Manager
1106 options NFSD #Network Filesystem Server
1107 options KGSSAPI #Kernel GSSAPI implementation
1109 options NULLFS #NULL filesystem
1110 options PROCFS #Process filesystem (requires PSEUDOFS)
1111 options PSEUDOFS #Pseudo-filesystem framework
1112 options PSEUDOFS_TRACE #Debugging support for PSEUDOFS
1113 options SMBFS #SMB/CIFS filesystem
1114 options TMPFS #Efficient memory filesystem
1115 options UDF #Universal Disk Format
1116 options UNIONFS #Union filesystem
1117 # The xFS_ROOT options REQUIRE the associated ``options xFS''
1118 options NFS_ROOT #NFS usable as root device
1120 # Soft updates is a technique for improving filesystem speed and
1121 # making abrupt shutdown less risky.
1125 # Extended attributes allow additional data to be associated with files,
1126 # and is used for ACLs, Capabilities, and MAC labels.
1127 # See src/sys/ufs/ufs/README.extattr for more information.
1129 options UFS_EXTATTR_AUTOSTART
1131 # Access Control List support for UFS filesystems. The current ACL
1132 # implementation requires extended attribute support, UFS_EXTATTR,
1133 # for the underlying filesystem.
1134 # See src/sys/ufs/ufs/README.acls for more information.
1137 # Directory hashing improves the speed of operations on very large
1138 # directories at the expense of some memory.
1141 # Gjournal-based UFS journaling support.
1142 options UFS_GJOURNAL
1144 # Make space in the kernel for a root filesystem on a md device.
1145 # Define to the number of kilobytes to reserve for the filesystem.
1146 # This is now optional.
1147 # If not defined, the root filesystem passed in as the MFS_IMAGE makeoption
1148 # will be automatically embedded in the kernel during linking. Its exact size
1149 # will be consumed within the kernel.
1150 # If defined, the old way of embedding the filesystem in the kernel will be
1151 # used. That is to say MD_ROOT_SIZE KB will be allocated in the kernel and
1152 # later, the filesystem image passed in as the MFS_IMAGE makeoption will be
1153 # dd'd into the reserved space if it fits.
1154 options MD_ROOT_SIZE=10
1156 # Make the md device a potential root device, either with preloaded
1157 # images of type mfs_root or md_root.
1160 # Write-protect the md root device so that it may not be mounted writeable.
1161 options MD_ROOT_READONLY
1163 # Allow to read MD image from external memory regions
1166 # Disk quotas are supported when this option is enabled.
1167 options QUOTA #enable disk quotas
1169 # If you are running a machine just as a fileserver for PC and MAC
1170 # users, using SAMBA, you may consider setting this option
1171 # and keeping all those users' directories on a filesystem that is
1172 # mounted with the suiddir option. This gives new files the same
1173 # ownership as the directory (similar to group). It's a security hole
1174 # if you let these users run programs, so confine it to file-servers
1175 # (but it'll save you lots of headaches in those cases). Root owned
1176 # directories are exempt and X bits are cleared. The suid bit must be
1177 # set on the directory as well; see chmod(1). PC owners can't see/set
1178 # ownerships so they keep getting their toes trodden on. This saves
1179 # you all the support calls as the filesystem it's used on will act as
1180 # they expect: "It's my dir so it must be my file".
1185 options NFS_MINATTRTIMO=3 # VREG attrib cache timeout in sec
1186 options NFS_MAXATTRTIMO=60
1187 options NFS_MINDIRATTRTIMO=30 # VDIR attrib cache timeout in sec
1188 options NFS_MAXDIRATTRTIMO=60
1189 options NFS_DEBUG # Enable NFS Debugging
1192 # Add support for the EXT2FS filesystem of Linux fame. Be a bit
1193 # careful with this - the ext2fs code has a tendency to lag behind
1194 # changes and not be exercised very much, so mounting read/write could
1195 # be dangerous (and even mounting read only could result in panics.)
1199 # The system memory devices; /dev/mem, /dev/kmem
1202 # The kernel symbol table device; /dev/ksyms
1205 # Optional character code conversion support with LIBICONV.
1206 # Each option requires their base file system and LIBICONV.
1207 options CD9660_ICONV
1208 options MSDOSFS_ICONV
1212 #####################################################################
1215 # Real time extensions added in the 1993 POSIX
1216 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1218 options _KPOSIX_PRIORITY_SCHEDULING
1219 # p1003_1b_semaphores are very experimental,
1220 # user should be ready to assist in debugging if problems arise.
1221 options P1003_1B_SEMAPHORES
1223 # POSIX message queue
1224 options P1003_1B_MQUEUE
1226 #####################################################################
1227 # SECURITY POLICY PARAMETERS
1229 # Support for BSM audit
1232 # Support for Mandatory Access Control (MAC):
1235 options MAC_BSDEXTENDED
1243 options MAC_PARTITION
1245 options MAC_PRIORITY
1246 options MAC_SEEOTHERUIDS
1249 options MAC_VERIEXEC
1250 options MAC_VERIEXEC_SHA1
1251 options MAC_VERIEXEC_SHA256
1252 options MAC_VERIEXEC_SHA384
1253 options MAC_VERIEXEC_SHA512
1254 device mac_veriexec_parser
1256 # Support for Capsicum
1257 options CAPABILITIES # fine-grained rights on file descriptors
1258 options CAPABILITY_MODE # sandboxes with no global namespace access
1261 #####################################################################
1264 # The granularity of operation is controlled by the kernel option HZ (default
1265 # frequency of 1000 Hz or a period 1ms between calls). Virtual machine guests
1266 # use a value of 100. Lower values may lower overhead at the expense of accuracy
1267 # of scheduling, though the adaptive tick code reduces that overhead.
1271 # Enable support for the kernel PLL to use an external PPS signal,
1272 # under supervision of [x]ntpd(8)
1273 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
1277 # Enable support for generic feed-forward clocks in the kernel.
1278 # The feed-forward clock support is an alternative to the feedback oriented
1279 # ntpd/system clock approach, and is to be used with a feed-forward
1280 # synchronization algorithm such as the RADclock:
1281 # More info here: http://www.synclab.org/radclock
1286 #####################################################################
1289 # SCSI DEVICE CONFIGURATION
1291 # The SCSI subsystem consists of the `base' SCSI code, a number of
1292 # high-level SCSI device `type' drivers, and the low-level host-adapter
1293 # device drivers. The host adapters are listed in the ISA and PCI
1294 # device configuration sections below.
1296 # It is possible to wire down your SCSI devices so that a given bus,
1297 # target, and LUN always come on line as the same device unit. In
1298 # earlier versions the unit numbers were assigned in the order that
1299 # the devices were probed on the SCSI bus. This means that if you
1300 # removed a disk drive, you may have had to rewrite your /etc/fstab
1301 # file, and also that you had to be careful when adding a new disk
1302 # as it may have been probed earlier and moved your device configuration
1305 # This old behavior is maintained as the default behavior. The unit
1306 # assignment begins with the first non-wired down unit for a device
1307 # type. For example, if you wire a disk as "da3" then the first
1308 # non-wired disk will be assigned da4.
1310 # The syntax for wiring down devices is:
1312 envvar hint.scbus.0.at="ahc0"
1313 envvar hint.scbus.1.at="ahc1"
1314 envvar hint.scbus.1.bus="0"
1315 envvar hint.scbus.3.at="ahc2"
1316 envvar hint.scbus.3.bus="0"
1317 envvar hint.scbus.2.at="ahc2"
1318 envvar hint.scbus.2.bus="1"
1319 envvar hint.da.0.at="scbus0"
1320 envvar hint.da.0.target="0"
1321 envvar hint.da.0.unit="0"
1322 envvar hint.da.1.at="scbus3"
1323 envvar hint.da.1.target="1"
1324 envvar hint.da.2.at="scbus2"
1325 envvar hint.da.2.target="3"
1326 envvar hint.sa.1.at="scbus1"
1327 envvar hint.sa.1.target="6"
1329 # "units" (SCSI logical unit number) that are not specified are
1330 # treated as if specified as LUN 0.
1332 # All SCSI devices allocate as many units as are required.
1334 # The ch driver drives SCSI Media Changer ("jukebox") devices.
1336 # The da driver drives SCSI Direct Access ("disk") and Optical Media
1339 # The sa driver drives SCSI Sequential Access ("tape") devices.
1341 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1343 # The ses driver drives SCSI Environment Services ("ses") and
1344 # SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1346 # The pt driver drives SCSI Processor devices.
1348 # The sg driver provides a passthrough API that is compatible with the
1349 # Linux SG driver. It will work in conjunction with the Linuxulator
1350 # to run linux SG apps. It can also stand on its own and provide
1351 # source level API compatibility for porting apps to FreeBSD.
1353 # Target Mode support is provided here but also requires that a SIM
1354 # (SCSI Host Adapter Driver) provide support as well.
1356 # The targ driver provides target mode support as a Processor type device.
1357 # It exists to give the minimal context necessary to respond to Inquiry
1358 # commands. There is a sample user application that shows how the rest
1359 # of the command support might be done in /usr/share/examples/scsi_target.
1361 # The targbh driver provides target mode support and exists to respond
1362 # to incoming commands that do not otherwise have a logical unit assigned
1365 # The pass driver provides a passthrough API to access the CAM subsystem.
1367 device scbus #base SCSI code
1368 device ch #SCSI media changers
1369 device da #SCSI direct access devices (aka disks)
1370 device sa #SCSI tapes
1371 device cd #SCSI CD-ROMs
1372 device ses #Enclosure Services (SES and SAF-TE)
1373 device pt #SCSI processor
1374 device targ #SCSI Target Mode Code
1375 device targbh #SCSI Target Mode Blackhole Device
1376 device pass #CAM passthrough driver
1377 device sg #Linux SCSI passthrough
1378 device ctl #CAM Target Layer
1381 # debugging options:
1382 # CAMDEBUG Compile in all possible debugging.
1383 # CAM_DEBUG_COMPILE Debug levels to compile in.
1384 # CAM_DEBUG_FLAGS Debug levels to enable on boot.
1385 # CAM_DEBUG_BUS Limit debugging to the given bus.
1386 # CAM_DEBUG_TARGET Limit debugging to the given target.
1387 # CAM_DEBUG_LUN Limit debugging to the given lun.
1388 # CAM_DEBUG_DELAY Delay in us after printing each debug line.
1389 # CAM_IO_STATS Publish additional CAM device statics by sysctl
1391 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1392 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1393 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
1394 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
1395 # queue after a bus reset, and the number of milliseconds to
1396 # freeze the device queue after a bus device reset. This
1397 # can be changed at boot and runtime with the
1398 # kern.cam.scsi_delay tunable/sysctl.
1400 options CAM_DEBUG_COMPILE=-1
1401 options CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
1402 options CAM_DEBUG_BUS=-1
1403 options CAM_DEBUG_TARGET=-1
1404 options CAM_DEBUG_LUN=-1
1405 options CAM_DEBUG_DELAY=1
1406 options CAM_MAX_HIGHPOWER=4
1407 options SCSI_NO_SENSE_STRINGS
1408 options SCSI_NO_OP_STRINGS
1409 options SCSI_DELAY=5000 # Be pessimistic about Joe SCSI device
1410 options CAM_IOSCHED_DYNAMIC
1411 options CAM_IO_STATS
1412 options CAM_TEST_FAILURE
1414 # Options for the CAM CDROM driver:
1415 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1416 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1417 # enforced if there is I/O waiting for another LUN
1418 # The compiled in defaults for these variables are 2 and 10 seconds,
1421 # These can also be changed on the fly with the following sysctl variables:
1422 # kern.cam.cd.changer.min_busy_seconds
1423 # kern.cam.cd.changer.max_busy_seconds
1425 options CHANGER_MIN_BUSY_SECONDS=2
1426 options CHANGER_MAX_BUSY_SECONDS=10
1428 # Options for the CAM sequential access driver:
1429 # SA_IO_TIMEOUT: Timeout for read/write/wfm operations, in minutes
1430 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
1431 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
1432 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
1433 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
1434 options SA_IO_TIMEOUT=4
1435 options SA_SPACE_TIMEOUT=60
1436 options SA_REWIND_TIMEOUT=(2*60)
1437 options SA_ERASE_TIMEOUT=(4*60)
1438 options SA_1FM_AT_EOD
1440 # Optional timeout for the CAM processor target (pt) device
1441 # This is specified in seconds. The default is 60 seconds.
1442 options SCSI_PT_DEFAULT_TIMEOUT=60
1444 # Optional enable of doing SES passthrough on other devices (e.g., disks)
1446 # Normally disabled because a lot of newer SCSI disks report themselves
1447 # as having SES capabilities, but this can then clot up attempts to build
1448 # a topology with the SES device that's on the box these drives are in....
1449 options SES_ENABLE_PASSTHROUGH
1452 #####################################################################
1453 # MISCELLANEOUS DEVICES AND OPTIONS
1455 device pty #BSD-style compatibility pseudo ttys
1456 device nmdm #back-to-back tty devices
1457 device md #Memory/malloc disk
1458 device snp #Snoop device - to look at pty/vty/etc..
1459 device ccd #Concatenated disk driver
1460 device firmware #firmware(9) support
1462 # Kernel side iconv library
1465 # Size of the kernel message buffer. Should be N * pagesize.
1466 options MSGBUF_SIZE=40960
1469 #####################################################################
1470 # HARDWARE BUS CONFIGURATION
1473 # PCI bus & PCI options:
1476 options PCI_HP # PCI-Express native HotPlug
1477 options PCI_IOV # PCI SR-IOV support
1480 #####################################################################
1481 # HARDWARE DEVICE CONFIGURATION
1483 # For ISA the required hints are listed.
1484 # PCI, CardBus, and SD/MMC are self identifying buses, so
1485 # no hints are needed.
1488 # Mandatory devices:
1491 # These options are valid for other keyboard drivers as well.
1492 options KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
1493 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
1495 # Define keyboard latency (try 200/15 for a snappy interactive console)
1496 options KBD_DELAY1=200 # define initial key delay
1497 options KBD_DELAY2=15 # define key delay
1499 device kbdmux # keyboard multiplexer
1500 options KBDMUX_DFLT_KEYMAP # specify the built-in keymap
1501 makeoptions KBDMUX_DFLT_KEYMAP=it.iso
1503 options FB_DEBUG # Frame buffer debugging
1505 # Enable experimental features of the syscons terminal emulator (teken).
1506 options TEKEN_CONS25 # cons25-style terminal emulation
1507 options TEKEN_UTF8 # UTF-8 output handling
1509 # The vt video console driver.
1511 options VT_ALT_TO_ESC_HACK=1 # Prepend ESC sequence to ALT keys
1512 options VT_MAXWINDOWS=16 # Number of virtual consoles
1513 options VT_TWOBUTTON_MOUSE # Use right mouse button to paste
1515 # The following options set the maximum framebuffer size.
1516 options VT_FB_MAX_HEIGHT=480
1517 options VT_FB_MAX_WIDTH=640
1519 # The following options will let you change the default vt terminal colors.
1520 options TERMINAL_NORM_ATTR=(FG_GREEN|BG_BLACK)
1521 options TERMINAL_KERN_ATTR=(FG_LIGHTRED|BG_BLACK)
1528 # SCSI host adapters:
1530 # aacraid: Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming
1531 # families. Container interface, CAM required.
1532 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1533 # 19160x/29160x, aic7770/aic78xx
1534 # ahd: Adaptec 29320/39320 Controllers.
1535 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1536 # ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1537 # ISP 12160 Ultra3 SCSI,
1538 # Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1539 # Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1540 # Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
1541 # ispfw: Firmware module for Qlogic host adapters
1542 # mpr: LSI-Logic MPT/Fusion Gen 3
1543 # mps: LSI-Logic MPT/Fusion Gen 2
1544 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
1545 # or FC9x9 Fibre Channel host adapters.
1546 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1547 # 53C810, 53C810A, 53C815, 53C825, 53C825A, 53C860, 53C875,
1548 # 53C876, 53C885, 53C895, 53C895A, 53C896, 53C897, 53C1510D,
1549 # 53C1010-33, 53C1010-66.
1555 envvar hint.isp.0.disable="1"
1556 envvar hint.isp.0.role="3"
1557 envvar hint.isp.0.prefer_iomap="1"
1558 envvar hint.isp.0.prefer_memmap="1"
1559 envvar hint.isp.0.fwload_disable="1"
1560 envvar hint.isp.0.ignore_nvram="1"
1561 envvar hint.isp.0.fullduplex="1"
1562 envvar hint.isp.0.topology="lport"
1563 envvar hint.isp.0.topology="nport"
1564 envvar hint.isp.0.topology="lport-only"
1565 envvar hint.isp.0.topology="nport-only"
1566 # we can't get u_int64_t types, nor can we get strings if it's got
1567 # a leading 0x, hence this silly dodge.
1568 envvar hint.isp.0.portwnn="w50000000aaaa0000"
1569 envvar hint.isp.0.nodewnn="w50000000aaaa0001"
1571 device mpr # LSI-Logic MPT-Fusion 3
1572 device mps # LSI-Logic MPT-Fusion 2
1573 device mpt # LSI-Logic MPT-Fusion
1576 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1577 # controllers that have it configured only if this option is set. Unfortunately,
1578 # this doesn't work on some motherboards, which prevents it from being the
1580 options AHC_ALLOW_MEMIO
1582 # Dump the contents of the ahc controller configuration PROM.
1583 options AHC_DUMP_EEPROM
1585 # Bitmap of units to enable targetmode operations.
1586 options AHC_TMODE_ENABLE
1588 # Compile in Aic7xxx Debugging code.
1591 # Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1592 options AHC_DEBUG_OPTS
1594 # Print register bitfields in debug output. Adds ~128k to driver
1596 options AHC_REG_PRETTY_PRINT
1598 # Compile in aic79xx debugging code.
1601 # Aic79xx driver debugging options. Adds ~215k to driver. See ahd(4).
1602 options AHD_DEBUG_OPTS=0xFFFFFFFF
1604 # Print human-readable register definitions when debugging
1605 options AHD_REG_PRETTY_PRINT
1607 # Bitmap of units to enable targetmode operations.
1608 options AHD_TMODE_ENABLE
1610 # Options used in dev/iscsi (Software iSCSI stack)
1612 options ISCSI_INITIATOR_DEBUG=9
1614 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
1616 # ISP_TARGET_MODE - enable target mode operation
1618 options ISP_TARGET_MODE=1
1620 # ISP_DEFAULT_ROLES - default role
1624 # both=3 (not supported currently)
1626 # ISP_INTERNAL_TARGET (trivial internal disk target, for testing)
1628 options ISP_DEFAULT_ROLES=0
1630 #options SYM_SETUP_SCSI_DIFF #-HVD support for 825a, 875, 885
1631 # disabled:0 (default), enabled:1
1632 #options SYM_SETUP_PCI_PARITY #-PCI parity checking
1633 # disabled:0, enabled:1 (default)
1634 #options SYM_SETUP_MAX_LUN #-Number of LUNs supported
1635 # default:8, range:[1..64]
1638 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
1639 # These controllers have a SCSI-like interface, and require the
1640 # CAM infrastructure.
1645 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers. Only
1646 # one entry is needed; the code will find and configure all supported
1649 device ida # Compaq Smart RAID
1650 device mlx # Mylex DAC960
1651 device mfi # LSI MegaRAID SAS
1652 device mfip # LSI MegaRAID SAS passthrough, requires CAM
1654 device mrsas # LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
1657 # Serial ATA host controllers:
1659 # ahci: Advanced Host Controller Interface (AHCI) compatible
1660 # mvs: Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
1661 # siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
1663 # These drivers are part of cam(4) subsystem. They supersede less featured
1664 # ata(4) subsystem drivers, supporting same hardware.
1671 # The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
1672 # PC Card devices. You only need one "device ata" for it to find all
1673 # PCI and PC Card ATA/ATAPI devices on modern machines.
1674 # Alternatively, individual bus and chipset drivers may be chosen by using
1675 # the 'atacore' driver then selecting the drivers on a per vendor basis.
1676 # For example to build a system which only supports a VIA chipset,
1677 # omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
1681 #device atacore # Core ATA functionality
1682 #device ataisa # ISA bus support
1683 #device atapci # PCI bus support; only generic chipset support
1686 #device ataacard # ACARD
1687 #device ataacerlabs # Acer Labs Inc. (ALI)
1688 #device ataamd # American Micro Devices (AMD)
1689 #device ataati # ATI
1690 #device atacenatek # Cenatek
1691 #device atacypress # Cypress
1692 #device atacyrix # Cyrix
1693 #device atahighpoint # HighPoint
1694 #device ataintel # Intel
1695 #device ataite # Integrated Technology Inc. (ITE)
1696 #device atajmicron # JMicron
1697 #device atamarvell # Marvell
1698 #device atamicron # Micron
1699 #device atanational # National
1700 #device atanetcell # NetCell
1701 #device atanvidia # nVidia
1702 #device atapromise # Promise
1703 #device ataserverworks # ServerWorks
1704 #device atasiliconimage # Silicon Image Inc. (SiI) (formerly CMD)
1705 #device atasis # Silicon Integrated Systems Corp.(SiS)
1706 #device atavia # VIA Technologies Inc.
1709 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1710 envvar hint.ata.0.at="isa"
1711 envvar hint.ata.0.port="0x1f0"
1712 envvar hint.ata.0.irq="14"
1713 envvar hint.ata.1.at="isa"
1714 envvar hint.ata.1.port="0x170"
1715 envvar hint.ata.1.irq="15"
1718 # uart: generic driver for serial interfaces.
1722 # Options for uart(4)
1723 options UART_PPS_ON_CTS # Do time pulse capturing using CTS
1725 options UART_POLL_FREQ # Set polling rate, used when hw has
1726 # no interrupt support (50 Hz default).
1728 # The following hint should only be used for pure ISA devices. It is not
1729 # needed otherwise. Use of hints is strongly discouraged.
1730 envvar hint.uart.0.at="isa"
1732 # The following 3 hints are used when the UART is a system device (i.e., a
1733 # console or debug port), but only on platforms that don't have any other
1734 # means to pass the information to the kernel. The unit number of the hint
1735 # is only used to bundle the hints together. There is no relation to the
1736 # unit number of the probed UART.
1737 envvar hint.uart.0.port="0x3f8"
1738 envvar hint.uart.0.flags="0x10"
1739 envvar hint.uart.0.baud="115200"
1741 # `flags' for serial drivers that support consoles, like uart(4):
1742 # 0x10 enable console support for this unit. Other console flags
1743 # (if applicable) are ignored unless this is set. Enabling
1744 # console support does not make the unit the preferred console.
1745 # Boot with -h or set boot_serial=YES in the loader.
1746 # Currently, at most one unit can have console support; the
1747 # first one (in config file order) with this flag set is
1749 # 0x80 use this port for serial line gdb support in ddb. Also known
1753 # Options for serial drivers that support consoles:
1754 options BREAK_TO_DEBUGGER # A BREAK/DBG on the console goes to
1755 # ddb, if available.
1757 # Solaris implements a new BREAK which is initiated by a character
1758 # sequence CR ~ ^b which is similar to a familiar pattern used on
1759 # Sun servers by the Remote Console. There are FreeBSD extensions:
1760 # CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
1761 options ALT_BREAK_TO_DEBUGGER
1763 # Serial Communications Controller
1764 # Supports the Freescale/NXP QUad Integrated and Zilog Z8530 multi-channel
1765 # communications controllers.
1768 # PCI Universal Communications driver
1769 # Supports various multi port PCI I/O cards.
1773 # Network interfaces:
1775 # MII bus support is required for many PCI Ethernet NICs,
1776 # namely those which use MII-compliant transceivers or implement
1777 # transceiver control interfaces that operate like an MII. Adding
1778 # "device miibus" to the kernel config pulls in support for the generic
1779 # miibus API, the common support for bit-bang'ing the MII and all
1780 # of the PHY drivers, including a generic one for PHYs that aren't
1781 # specifically handled by an individual driver. Support for specific
1782 # PHYs may be built by adding "device mii", "device mii_bitbang" if
1783 # needed by the NIC driver and then adding the appropriate PHY driver.
1784 device mii # Minimal MII support
1785 device mii_bitbang # Common module for bit-bang'ing the MII
1786 device miibus # MII support w/ bit-bang'ing and all PHYs
1788 device acphy # Altima Communications AC101
1789 device amphy # AMD AM79c873 / Davicom DM910{1,2}
1790 device atphy # Attansic/Atheros F1
1791 device axphy # Asix Semiconductor AX88x9x
1792 device bmtphy # Broadcom BCM5201/BCM5202 and 3Com 3c905C
1793 device bnxt # Broadcom NetXtreme-C/NetXtreme-E
1794 device brgphy # Broadcom BCM54xx/57xx 1000baseTX
1795 device cgem # Cadence GEM Gigabit Ethernet
1796 device ciphy # Cicada/Vitesse CS/VSC8xxx
1797 device e1000phy # Marvell 88E1000 1000/100/10-BT
1798 device gentbi # Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
1799 device icsphy # ICS ICS1889-1893
1800 device ip1000phy # IC Plus IP1000A/IP1001
1801 device jmphy # JMicron JMP211/JMP202
1802 device lxtphy # Level One LXT-970
1803 device nsgphy # NatSemi DP8361/DP83865/DP83891
1804 device nsphy # NatSemi DP83840A
1805 device nsphyter # NatSemi DP83843/DP83815
1806 device pnaphy # HomePNA
1807 device qsphy # Quality Semiconductor QS6612
1808 device rdcphy # RDC Semiconductor R6040
1809 device rgephy # RealTek 8169S/8110S/8211B/8211C
1810 device rlphy # RealTek 8139
1811 device rlswitch # RealTek 8305
1812 device smcphy # SMSC LAN91C111
1813 device tdkphy # TDK 89Q2120
1814 device truephy # LSI TruePHY
1815 device xmphy # XaQti XMAC II
1817 # ae: Support for gigabit ethernet adapters based on the Attansic/Atheros
1818 # L2 PCI-Express FastEthernet controllers.
1819 # age: Support for gigabit ethernet adapters based on the Attansic/Atheros
1820 # L1 PCI express gigabit ethernet controllers.
1821 # alc: Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
1822 # ale: Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
1823 # ath: Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
1824 # bce: Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
1826 # bfe: Broadcom BCM4401 Ethernet adapter.
1827 # bge: Support for gigabit ethernet adapters based on the Broadcom
1828 # BCM570x family of controllers, including the 3Com 3c996-T,
1829 # the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1830 # the embedded gigE NICs on Dell PowerEdge 2550 servers.
1831 # bnxt: Broadcom NetXtreme-C and NetXtreme-E PCIe 10/25/50G Ethernet adapters.
1832 # bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
1834 # bwi: Broadcom BCM430* and BCM431* family of wireless adapters.
1835 # bwn: Broadcom BCM43xx family of wireless adapters.
1836 # cas: Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
1837 # cxgb: Chelsio T3 based 1GbE/10GbE PCIe Ethernet adapters.
1838 # cxgbe:Chelsio T4, T5, and T6-based 1/10/25/40/100GbE PCIe Ethernet
1840 # cxgbev: Chelsio T4, T5, and T6-based PCIe Virtual Functions.
1841 # dc: Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1842 # and various workalikes including:
1843 # the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1844 # AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1845 # 82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1846 # and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1847 # replaces the old al, ax, dm, pn and mx drivers. List of brands:
1848 # Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1849 # SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1850 # LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1852 # em: Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1853 # fxp: Intel EtherExpress Pro/100B
1854 # (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
1855 # gem: Apple GMAC/Sun ERI/Sun GEM
1856 # jme: JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
1857 # le: AMD Am7900 LANCE and Am79C9xx PCnet
1858 # lge: Support for PCI gigabit ethernet adapters based on the Level 1
1859 # LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1860 # SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1861 # lio: Support for Cavium 23XX Ethernet adapters
1862 # malo: Marvell Libertas wireless NICs.
1863 # mwl: Marvell 88W8363 802.11n wireless NICs.
1864 # Requires the mwl firmware module
1865 # mwlfw: Marvell 88W8363 firmware
1866 # msk: Support for gigabit ethernet adapters based on the Marvell/SysKonnect
1867 # Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
1868 # 88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
1869 # 88E8055, 88E8056 and D-Link 560T/550SX.
1870 # mlxfw: Mellanox firmware update module.
1871 # mlx5: Mellanox ConnectX-4 and ConnectX-4 LX IB and Eth shared code module.
1872 # mlx5en:Mellanox ConnectX-4 and ConnectX-4 LX PCIe Ethernet adapters.
1873 # my: Myson Fast Ethernet (MTD80X, MTD89X)
1874 # nge: Support for PCI gigabit ethernet adapters based on the National
1875 # Semiconductor DP83820 and DP83821 chipset. This includes the
1876 # SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
1877 # GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
1878 # EP-320G-TX and the Netgear GA622T.
1879 # oce: Emulex 10 Gbit adapters (OneConnect Ethernet)
1880 # ral: Ralink Technology IEEE 802.11 wireless adapter
1881 # re: RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
1882 # rl: Support for PCI fast ethernet adapters based on the RealTek 8129/8139
1883 # chipset. Note that the RealTek driver defaults to using programmed
1884 # I/O to do register accesses because memory mapped mode seems to cause
1885 # severe lockups on SMP hardware. This driver also supports the
1886 # Accton EN1207D `Cheetah' adapter, which uses a chip called
1887 # the MPX 5030/5038, which is either a RealTek in disguise or a
1888 # RealTek workalike. Note that the D-Link DFE-530TX+ uses the RealTek
1889 # chipset and is supported by this driver, not the 'vr' driver.
1890 # rtwn: RealTek wireless adapters.
1891 # rtwnfw: RealTek wireless firmware.
1892 # sge: Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
1893 # sis: Support for NICs based on the Silicon Integrated Systems SiS 900,
1894 # SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
1895 # sk: Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
1896 # This includes the SK-9841 and SK-9842 single port cards (single mode
1897 # and multimode fiber) and the SK-9843 and SK-9844 dual port cards
1898 # (also single mode and multimode).
1899 # The driver will autodetect the number of ports on the card and
1900 # attach each one as a separate network interface.
1901 # ste: Sundance Technologies ST201 PCI fast ethernet controller, includes
1902 # the D-Link DFE-550TX.
1903 # stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
1904 # TC9021 family of controllers, including the Sundance ST2021/ST2023,
1905 # the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
1906 # ti: Support for PCI gigabit ethernet NICs based on the Alteon Networks
1907 # Tigon 1 and Tigon 2 chipsets. This includes the Alteon AceNIC, the
1908 # 3Com 3c985, the Netgear GA620 and various others. Note that you will
1909 # probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
1910 # vr: Support for various fast ethernet adapters based on the VIA
1911 # Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
1912 # including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
1913 # DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
1914 # vte: DM&P Vortex86 RDC R6040 Fast Ethernet
1915 # xl: Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
1916 # Etherlink XL cards and integrated controllers. This includes the
1917 # integrated 3c905B-TX chips in certain Dell Optiplex and Dell
1918 # Precision desktop machines and the integrated 3c905-TX chips
1919 # in Dell Latitude laptop docking stations.
1920 # Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
1922 # PCI Ethernet NICs that use the common MII bus controller code.
1923 device ae # Attansic/Atheros L2 FastEthernet
1924 device age # Attansic/Atheros L1 Gigabit Ethernet
1925 device alc # Atheros AR8131/AR8132 Ethernet
1926 device ale # Atheros AR8121/AR8113/AR8114 Ethernet
1927 device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet
1928 device bfe # Broadcom BCM440x 10/100 Ethernet
1929 device bge # Broadcom BCM570xx Gigabit Ethernet
1930 device cas # Sun Cassini/Cassini+ and NS DP83065 Saturn
1931 device dc # DEC/Intel 21143 and various workalikes
1932 device et # Agere ET1310 10/100/Gigabit Ethernet
1933 device fxp # Intel EtherExpress PRO/100B (82557, 82558)
1934 envvar hint.fxp.0.prefer_iomap="0"
1935 device gem # Apple GMAC/Sun ERI/Sun GEM
1936 device jme # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
1937 device lge # Level 1 LXT1001 gigabit Ethernet
1938 device lio # Support for Cavium 23XX Ethernet adapters
1939 device mlxfw # Mellanox firmware update module
1940 device mlx5 # Shared code module between IB and Ethernet
1941 device mlx5en # Mellanox ConnectX-4 and ConnectX-4 LX
1942 device msk # Marvell/SysKonnect Yukon II Gigabit Ethernet
1943 device my # Myson Fast Ethernet (MTD80X, MTD89X)
1944 device nge # NatSemi DP83820 gigabit Ethernet
1945 device re # RealTek 8139C+/8169/8169S/8110S
1946 device rl # RealTek 8129/8139
1947 device sge # Silicon Integrated Systems SiS190/191
1948 device sis # Silicon Integrated Systems SiS 900/SiS 7016
1949 device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
1950 device ste # Sundance ST201 (D-Link DFE-550TX)
1951 device stge # Sundance/Tamarack TC9021 gigabit Ethernet
1952 device vr # VIA Rhine, Rhine II
1953 device vte # DM&P Vortex86 RDC R6040 Fast Ethernet
1954 device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
1956 # PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
1958 device em # Intel Pro/1000 Gigabit Ethernet
1959 device ix # Intel Pro/10Gbe PCIE Ethernet
1960 device ixv # Intel Pro/10Gbe PCIE Ethernet VF
1962 # PCI Ethernet NICs.
1963 device cxgb # Chelsio T3 10 Gigabit Ethernet
1964 device cxgb_t3fw # Chelsio T3 10 Gigabit Ethernet firmware
1965 device cxgbe # Chelsio T4-T6 1/10/25/40/100 Gigabit Ethernet
1966 device cxgbev # Chelsio T4-T6 Virtual Functions
1967 device le # AMD Am7900 LANCE and Am79C9xx PCnet
1968 device mxge # Myricom Myri-10G 10GbE NIC
1969 device oce # Emulex 10 GbE (OneConnect Ethernet)
1970 device ti # Alteon Networks Tigon I/II gigabit Ethernet
1972 # PCI IEEE 802.11 Wireless NICs
1973 device ath # Atheros pci/cardbus NIC's
1974 device ath_hal # pci/cardbus chip support
1975 #device ath_ar5210 # AR5210 chips
1976 #device ath_ar5211 # AR5211 chips
1977 #device ath_ar5212 # AR5212 chips
1984 #device ath_ar5416 # AR5416 chips
1985 # All of the AR5212 parts have a problem when paired with the AR71xx
1986 # CPUS. These parts have a bug that triggers a fatal bus error on the AR71xx
1987 # only. Details of the exact nature of the bug are sketchy, but some can be
1988 # found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
1989 # 6. This option enables this workaround. There is a performance penalty
1990 # for this work around, but without it things don't work at all. The DMA
1991 # from the card usually bursts 128 bytes, but on the affected CPUs, only
1993 options AH_RXCFG_SDMAMW_4BYTES
1994 #device ath_ar9160 # AR9160 chips
1995 #device ath_ar9280 # AR9280 chips
1996 #device ath_ar9285 # AR9285 chips
1997 device ath_rate_sample # SampleRate tx rate control for ath
1998 device bwi # Broadcom BCM430* BCM431*
1999 device bwn # Broadcom BCM43xx
2000 device malo # Marvell Libertas wireless NICs.
2001 device mwl # Marvell 88W8363 802.11n wireless NICs.
2003 device ral # Ralink Technology RT2500 wireless NICs.
2004 device rtwn # Realtek wireless NICs
2007 # Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
2008 #options TI_SF_BUF_JUMBO
2009 # Turn on the header splitting option for the ti(4) driver firmware. This
2010 # only works for Tigon II chips, and has no effect for Tigon I chips.
2011 # This option requires the TI_SF_BUF_JUMBO option above.
2012 #options TI_JUMBO_HDRSPLIT
2014 # These two options allow manipulating the mbuf cluster size and mbuf size,
2015 # respectively. Be very careful with NIC driver modules when changing
2016 # these from their default values, because that can potentially cause a
2017 # mismatch between the mbuf size assumed by the kernel and the mbuf size
2018 # assumed by a module. The only driver that currently has the ability to
2019 # detect a mismatch is ti(4).
2020 options MCLSHIFT=11 # mbuf cluster shift in bits, 11 == 2KB
2021 options MSIZE=256 # mbuf size in bytes
2026 # sound: The generic sound driver.
2032 # snd_*: Device-specific drivers.
2034 # The flags of the device tell the device a bit more info about the
2035 # device that normally is obtained through the PnP interface.
2036 # bit 2..0 secondary DMA channel;
2037 # bit 4 set if the board uses two dma channels;
2038 # bit 15..8 board type, overrides autodetection; leave it
2039 # zero if don't know what to put in (and you don't,
2040 # since this is unsupported at the moment...).
2042 # snd_als4000: Avance Logic ALS4000 PCI.
2043 # snd_atiixp: ATI IXP 200/300/400 PCI.
2044 # snd_cmi: CMedia CMI8338/CMI8738 PCI.
2045 # snd_cs4281: Crystal Semiconductor CS4281 PCI.
2046 # snd_csa: Crystal Semiconductor CS461x/428x PCI. (except
2048 # snd_emu10k1: Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
2049 # snd_emu10kx: Creative SoundBlaster Live! and Audigy
2050 # snd_envy24: VIA Envy24 and compatible, needs snd_spicds.
2051 # snd_envy24ht: VIA Envy24HT and compatible, needs snd_spicds.
2052 # snd_es137x: Ensoniq AudioPCI ES137x PCI.
2053 # snd_fm801: Forte Media FM801 PCI.
2054 # snd_hda: Intel High Definition Audio (Controller) and
2056 # snd_hdspe: RME HDSPe AIO and RayDAT.
2057 # snd_ich: Intel ICH AC'97 and some more audio controllers
2058 # embedded in a chipset, for example nVidia
2059 # nForce controllers.
2060 # snd_maestro3: ESS Technology Maestro-3/Allegro PCI.
2061 # snd_neomagic: Neomagic 256 AV/ZX PCI.
2062 # snd_solo: ESS Solo-1x PCI.
2063 # snd_spicds: SPI codec driver, needed by Envy24/Envy24HT drivers.
2064 # snd_t4dwave: Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
2066 # snd_uaudio: USB audio.
2067 # snd_via8233: VIA VT8233x PCI.
2068 # snd_via82c686: VIA VT82C686A PCI.
2069 # snd_vibes: S3 Sonicvibes PCI.
2092 device snd_via82c686
2095 # For non-PnP sound cards:
2096 envvar hint.pcm.0.at="isa"
2097 envvar hint.pcm.0.irq="10"
2098 envvar hint.pcm.0.drq="1"
2099 envvar hint.pcm.0.flags="0x0"
2100 envvar hint.sbc.0.at="isa"
2101 envvar hint.sbc.0.port="0x220"
2102 envvar hint.sbc.0.irq="5"
2103 envvar hint.sbc.0.drq="1"
2104 envvar hint.sbc.0.flags="0x15"
2105 envvar hint.gusc.0.at="isa"
2106 envvar hint.gusc.0.port="0x220"
2107 envvar hint.gusc.0.irq="5"
2108 envvar hint.gusc.0.drq="1"
2109 envvar hint.gusc.0.flags="0x13"
2112 # Following options are intended for debugging/testing purposes:
2114 # SND_DEBUG Enable extra debugging code that includes
2115 # sanity checking and possible increase of
2118 # SND_DIAGNOSTIC Similar in a spirit of INVARIANTS/DIAGNOSTIC,
2119 # zero tolerance against inconsistencies.
2121 # SND_FEEDER_MULTIFORMAT By default, only 16/32 bit feeders are compiled
2122 # in. This options enable most feeder converters
2123 # except for 8bit. WARNING: May bloat the kernel.
2125 # SND_FEEDER_FULL_MULTIFORMAT Ditto, but includes 8bit feeders as well.
2127 # SND_FEEDER_RATE_HP (feeder_rate) High precision 64bit arithmetic
2128 # as much as possible (the default trying to
2129 # avoid it). Possible slowdown.
2131 # SND_PCM_64 (Only applicable for i386/32bit arch)
2132 # Process 32bit samples through 64bit
2133 # integer/arithmetic. Slight increase of dynamic
2134 # range at a cost of possible slowdown.
2136 # SND_OLDSTEREO Only 2 channels are allowed, effectively
2137 # disabling multichannel processing.
2140 options SND_DIAGNOSTIC
2141 options SND_FEEDER_MULTIFORMAT
2142 options SND_FEEDER_FULL_MULTIFORMAT
2143 options SND_FEEDER_RATE_HP
2145 options SND_OLDSTEREO
2150 # cbb: pci/CardBus bridge implementing YENTA interface
2151 # cardbus: CardBus slots
2159 # mmcsd MMC/SD memory card
2160 # sdhci Generic PCI SD Host Controller
2161 # rtsx Realtek SD card reader (RTS5209, RTS5227, ...)
2170 # System Management Bus support is provided by the 'smbus' device.
2171 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
2172 # which is a child of the 'smbus' device.
2174 # Supported devices:
2175 # smb standard I/O through /dev/smb*
2177 # Supported SMB interfaces:
2178 # iicsmb I2C to SMB bridge with any iicbus interface
2179 # intpm Intel PIIX4 (82371AB, 82443MX) Power Management Unit
2180 # alpm Acer Aladdin-IV/V/Pro2 Power Management Unit
2181 # ichsmb Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
2182 # viapm VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2183 # amdpm AMD 756 Power Management Unit
2184 # amdsmb AMD 8111 SMBus 2.0 Controller
2185 # nfpm NVIDIA nForce Power Management Unit
2186 # nfsmb NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
2187 # ismt Intel SMBus 2.0 controller chips (on Atom S1200, C2000)
2189 device smbus # Bus support, required for smb below.
2203 # SMBus peripheral devices
2205 # jedec_dimm Asset and temperature reporting for DDR3 and DDR4 DIMMs
2211 # Philips i2c bus support is provided by the `iicbus' device.
2213 # Supported devices:
2214 # ic i2c network interface
2215 # iic i2c standard io
2216 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
2217 # iicoc simple polling driver for OpenCores I2C controller
2220 # iicbb generic I2C bit-banging code (needed by lpbb)
2222 device iicbus # Bus support, required for ic/iic/iicsmb below.
2223 device iicbb # bitbang driver; implements i2c on a pair of gpio pins
2226 device iic # userland access to i2c slave devices via ioctl(8)
2227 device iicsmb # smb over i2c bridge
2228 device iicoc # OpenCores I2C controller support
2230 # I2C bus multiplexer (mux) devices
2231 device iicmux # i2c mux core driver
2232 device iic_gpiomux # i2c mux hardware controlled via gpio pins
2233 device ltc430x # LTC4305 and LTC4306 i2c mux chips
2235 # I2C peripheral devices
2237 device ad7418 # Analog Devices temp and voltage sensor
2238 device ads111x # Texas Instruments ADS101x and ADS111x ADCs
2239 device ds1307 # Dallas DS1307 RTC and compatible
2240 device ds13rtc # All Dallas/Maxim ds13xx chips
2241 device ds1672 # Dallas DS1672 RTC
2242 device ds3231 # Dallas DS3231 RTC + temperature
2243 device fan53555 # Fairchild Semi FAN53555/SYR82x Regulator
2244 device icee # AT24Cxxx and compatible EEPROMs
2245 device isl12xx # Intersil ISL12xx RTC
2246 device lm75 # LM75 compatible temperature sensor
2247 device nxprtc # NXP RTCs: PCA/PFC212x PCA/PCF85xx
2248 device rtc8583 # Epson RTC-8583
2249 device s35390a # Seiko Instruments S-35390A RTC
2250 device sy8106a # Silergy Corp. SY8106A buck regulator
2254 # Parallel port bus support is provided by the `ppbus' device.
2255 # Multiple devices may be attached to the parallel port, devices
2256 # are automatically probed and attached when found.
2258 # Supported devices:
2259 # lpt Parallel Printer
2260 # plip Parallel network interface
2261 # ppi General-purpose I/O ("Geek Port") + IEEE1284 I/O
2262 # pps Pulse per second Timing Interface
2263 # lpbb Philips official parallel port I2C bit-banging interface
2264 # pcfclock Parallel port clock driver.
2266 # Supported interfaces:
2267 # ppc ISA-bus parallel port interfaces.
2270 options PPC_PROBE_CHIPSET # Enable chipset specific detection
2271 # (see flags in ppc(4))
2272 options DEBUG_1284 # IEEE1284 signaling protocol debug
2273 options PERIPH_1284 # Makes your computer act as an IEEE1284
2274 # compliant peripheral
2275 options DONTPROBE_1284 # Avoid boot detection of PnP parallel devices
2276 options LPT_DEBUG # Printer driver debug
2277 options PPC_DEBUG # Parallel chipset level debug
2278 options PLIP_DEBUG # Parallel network IP interface debug
2279 options PCFCLOCK_VERBOSE # Verbose pcfclock driver
2280 options PCFCLOCK_MAX_RETRIES=5 # Maximum read tries (default 10)
2283 envvar hint.ppc.0.at="isa"
2284 envvar hint.ppc.0.irq="7"
2293 # General Purpose I/O pins
2294 device dwgpio # Synopsys DesignWare APB GPIO Controller
2295 device gpio # gpio interfaces and bus support
2296 device gpiobacklight # sysctl control of gpio-based backlight
2297 device gpioiic # i2c via gpio bitbang
2298 device gpiokeys # kbd(4) glue for gpio-based key input
2299 device gpioled # led(4) gpio glue
2300 device gpiopower # event handler for gpio-based powerdown
2301 device gpiopps # Pulse per second input from gpio pin
2302 device gpioregulator # extres/regulator glue for gpio pin
2303 device gpiospi # SPI via gpio bitbang
2304 device gpioths # 1-wire temp/humidity sensor on gpio pin
2306 # Pulse width modulation
2307 device pwmbus # pwm interface and bus support
2308 device pwmc # userland control access to pwm outputs
2311 # Etherswitch framework and drivers
2313 # etherswitch The etherswitch(4) framework
2314 # miiproxy Proxy device for miibus(4) functionality
2316 # Switch hardware support:
2317 # arswitch Atheros switches
2318 # ip17x IC+ 17x family switches
2319 # rtl8366r Realtek RTL8366 switches
2320 # ukswitch Multi-PHY switches
2329 # Kernel BOOTP support
2331 options BOOTP # Use BOOTP to obtain IP address/hostname
2332 # Requires NFSCL and NFS_ROOT
2333 options BOOTP_NFSROOT # NFS mount root filesystem using BOOTP info
2334 options BOOTP_NFSV3 # Use NFS v3 to NFS mount root
2335 options BOOTP_COMPAT # Workaround for broken bootp daemons.
2336 options BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2337 options BOOTP_BLOCKSIZE=8192 # Override NFS block size
2340 # Enable software watchdog routines, even if hardware watchdog is present.
2341 # By default, software watchdog timer is enabled only if no hardware watchdog
2347 # Add the software deadlock resolver thread.
2352 # Disable swapping of stack pages. This option removes all
2353 # code which actually performs swapping, so it's not possible to turn
2354 # it back on at run-time.
2356 # This is sometimes usable for systems which don't have any swap space
2357 # (see also sysctl "vm.disable_swapspace_pageouts")
2359 #options NO_SWAPPING
2361 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
2362 # for sendfile(2) that are used to map file VM pages, and normally
2363 # default to a quantity that is roughly 16*MAXUSERS+512. You would
2364 # typically want about 4 of these for each simultaneous file send.
2366 options NSFBUFS=1024
2369 # Enable extra debugging code for locks. This stores the filename and
2370 # line of whatever acquired the lock in the lock itself, and changes a
2371 # number of function calls to pass around the relevant data. This is
2372 # not at all useful unless you are debugging lock code. Note that
2373 # modules should be recompiled as this option modifies KBI.
2377 #####################################################################
2379 device hid # Generic HID support
2380 options HID_DEBUG # enable debug msgs
2381 device hidbus # HID bus
2382 device hidmap # HID to evdev mapping
2383 device hidraw # Raw access driver
2384 options HIDRAW_MAKE_UHID_ALIAS # install /dev/uhid alias
2385 device hconf # Multitouch configuration TLC
2386 device hcons # Consumer controls
2387 device hgame # Generic game controllers
2388 device hkbd # HID keyboard
2389 device hms # HID mouse
2390 device hmt # HID multitouch (MS-compatible)
2391 device hpen # Generic pen driver
2392 device hsctrl # System controls
2393 device ps4dshock # Sony PS4 DualShock 4 gamepad driver
2394 device xb360gp # XBox 360 gamepad driver
2396 #####################################################################
2408 # General USB code (mandatory for USB)
2411 # USB Double Bulk Pipe devices
2413 # USB temperature meter
2417 # Human Interface Device (anything with buttons and dials)
2423 # USB mass storage driver (Requires scbus and da)
2425 # USB mass storage driver for device-side mode
2427 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
2436 # eGalax USB touch screen
2438 # Diamond Rio 500 MP3 player
2440 # HID-over-USB driver
2444 # USB serial support
2446 # USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
2448 # USB support for Technologies ARK3116 based serial adapters
2450 # USB support for Belkin F5U103 and compatible serial adapters
2452 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
2454 # USB support for some Windows CE based serial communication.
2456 # USB support for Prolific PL-2303 serial adapters
2458 # USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
2460 # USB Visor and Palm devices
2462 # USB serial support for DDI pocket's PHS
2465 # USB ethernet support
2467 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
2468 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2469 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2473 # ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2474 # LinkSys USB200M and various other adapters.
2476 # ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
2480 # Devices which communicate using Ethernet over USB, particularly
2481 # Communication Device Class (CDC) Ethernet specification. Supports
2482 # Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
2485 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
2486 # and Netmate II, and the Belkin F5U111.
2489 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2490 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2491 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
2492 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
2493 # and 2104USB, and the Corega USB-T.
2496 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
2497 # and the GREEN HOUSE GH-USB100B.
2500 # Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2503 # RealTek RTL8152/RTL8153 USB Ethernet driver
2506 # Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
2509 # HSxPA devices from Option N.V
2512 # Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
2515 # Ralink Technology RT2501USB/RT2601USB wireless driver
2517 # Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
2520 # Atheros AR5523 wireless driver
2523 # Conexant/Intersil PrismGT wireless driver
2526 # Ralink Technology RT2500USB wireless driver
2529 # RNDIS USB ethernet driver
2531 # Realtek RTL8187B/L wireless driver
2534 # ZyDas ZD1211/ZD1211B wireless driver
2537 # Sierra USB wireless driver
2541 # debugging options for the USB subsystem
2547 options UKBD_DFLT_KEYMAP # specify the built-in keymap
2548 makeoptions UKBD_DFLT_KEYMAP=jp.106
2550 # options for uplcom:
2551 options UPLCOM_INTR_INTERVAL=100 # interrupt pipe interval
2554 # options for uvscom:
2555 options UVSCOM_DEFAULT_OPKTSIZE=8 # default output packet size
2556 options UVSCOM_INTR_INTERVAL=100 # interrupt pipe interval
2559 #####################################################################
2562 device firewire # FireWire bus code
2563 device sbp # SCSI over Firewire (Requires scbus and da)
2564 device sbp_targ # SBP-2 Target mode (Requires scbus and targ)
2565 device fwe # Ethernet over FireWire (non-standard!)
2566 device fwip # IP over FireWire (RFC2734 and RFC3146)
2568 #####################################################################
2569 # dcons support (Dumb Console Device)
2571 device dcons # dumb console driver
2572 device dcons_crom # FireWire attachment
2573 options DCONS_BUF_SIZE=16384 # buffer size
2574 options DCONS_POLL_HZ=100 # polling rate
2575 options DCONS_FORCE_CONSOLE=0 # force to be the primary console
2576 options DCONS_FORCE_GDB=1 # force to be the gdb device
2578 #####################################################################
2581 # This is a port of the OpenBSD crypto framework. Include this when
2582 # configuring IPSEC and when you have a h/w crypto device to accelerate
2583 # user applications that link to OpenSSL.
2585 # Drivers are ports from OpenBSD with some simple enhancements that have
2586 # been fed back to OpenBSD.
2588 device crypto # core crypto support
2590 # Only install the cryptodev device if you are running tests, or know
2591 # specifically why you need it. In most cases, it is not needed and
2592 # will make things slower.
2593 device cryptodev # /dev/crypto for access to h/w
2595 device rndtest # FIPS 140-2 entropy tester
2597 device ccr # Chelsio T6
2599 device hifn # Hifn 7951, 7781, etc.
2600 options HIFN_DEBUG # enable debugging support: hw.hifn.debug
2601 options HIFN_RNDTEST # enable rndtest support
2603 #####################################################################
2607 # Embedded system options:
2609 # An embedded system might want to run something other than init.
2610 options INIT_PATH=/sbin/init:/rescue/init
2613 options BUS_DEBUG # enable newbus debugging
2614 options DEBUG_VFS_LOCKS # enable VFS lock debugging
2615 options SOCKBUF_DEBUG # enable sockbuf last record/mb tail checking
2616 options IFMEDIA_DEBUG # enable debugging in net/if_media.c
2621 # Make the SYSINIT process performed by mi_startup() verbose. This is very
2622 # useful when porting to a new architecture. If DDB is also enabled, this
2623 # will print function names instead of addresses. If defined with a value
2624 # of zero, the verbose code is compiled-in but disabled by default, and can
2625 # be enabled with the debug.verbose_sysinit=1 tunable.
2626 options VERBOSE_SYSINIT
2628 #####################################################################
2629 # SYSV IPC KERNEL PARAMETERS
2631 # Maximum number of System V semaphores that can be used on the system at
2635 # Total number of semaphores system wide
2638 # Total number of undo structures in system
2641 # Maximum number of System V semaphores that can be used by a single process
2645 # Maximum number of operations that can be outstanding on a single System V
2646 # semaphore at one time.
2649 # Maximum number of undo operations that can be outstanding on a single
2650 # System V semaphore at one time.
2653 # Maximum number of shared memory pages system wide.
2656 # Maximum size, in bytes, of a single System V shared memory region.
2657 options SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2658 options SHMMAXPGS=1025
2660 # Minimum size, in bytes, of a single System V shared memory region.
2663 # Maximum number of shared memory regions that can be used on the system
2667 # Maximum number of System V shared memory regions that can be attached to
2668 # a single process at one time.
2671 # Set the amount of time (in seconds) the system will wait before
2672 # rebooting automatically when a kernel panic occurs. If set to (-1),
2673 # the system will wait indefinitely until a key is pressed on the
2675 options PANIC_REBOOT_WAIT_TIME=16
2677 # Attempt to bypass the buffer cache and put data directly into the
2678 # userland buffer for read operation when O_DIRECT flag is set on the
2679 # file. Both offset and length of the read operation must be
2680 # multiples of the physical media sector size.
2684 # Specify a lower limit for the number of swap I/O buffers. They are
2685 # (among other things) used when bypassing the buffer cache due to
2686 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
2688 options NSWBUF_MIN=120
2690 #####################################################################
2692 # More undocumented options for linting.
2693 # Note that documenting these is not considered an affront.
2695 options CAM_DEBUG_DELAY
2699 # Kernel filelock debugging.
2702 # System V compatible message queues
2703 # Please note that the values provided here are used to test kernel
2704 # building. The defaults in the sources provide almost the same numbers.
2705 # MSGSSZ must be a power of 2 between 8 and 1024.
2706 options MSGMNB=2049 # Max number of chars in queue
2707 options MSGMNI=41 # Max number of message queue identifiers
2708 options MSGSEG=2049 # Max number of message segments
2709 options MSGSSZ=16 # Size of a message segment
2710 options MSGTQL=41 # Max number of messages in system
2712 options NBUF=512 # Number of buffer headers
2714 options SC_DEBUG_LEVEL=5 # Syscons debug level
2715 options SC_RENDER_DEBUG # syscons rendering debugging
2717 options VFS_BIO_DEBUG # VFS buffer I/O debugging
2719 options KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
2720 options KSTACK_USAGE_PROF
2722 # Adaptec Array Controller driver options
2723 options AAC_DEBUG # Debugging levels:
2724 # 0 - quiet, only emit warnings
2725 # 1 - noisy, emit major function
2726 # points and things done
2727 # 2 - extremely noisy, emit trace
2728 # items in loops, etc.
2730 # Resource Accounting
2736 # Yet more undocumented options for linting.
2737 options MAXFILES=999
2739 # Random number generator
2740 # Alternative algorithm.
2741 #options RANDOM_FENESTRASX
2742 # Allow the CSPRNG algorithm to be loaded as a module.
2743 #options RANDOM_LOADABLE
2744 # Select this to allow high-rate but potentially expensive
2745 # harvesting of Slab-Allocator entropy. In very high-rate
2746 # situations the value of doing this is dubious at best.
2747 options RANDOM_ENABLE_UMA # slab allocator
2749 # Select this to allow high-rate but potentially expensive
2750 # harvesting of of the m_next pointer in the mbuf. Note that
2751 # the m_next pointer is NULL except when receiving > 4K
2752 # jumbo frames or sustained bursts by way of LRO. Thus in
2753 # the common case it is stirring zero in to the entropy
2754 # pool. In cases where it is not NULL it is pointing to one
2755 # of a small (in the thousands to 10s of thousands) number
2756 # of 256 byte aligned mbufs. Hence it is, even in the best
2757 # case, a poor source of entropy. And in the absence of actual
2758 # runtime analysis of entropy collection may mislead the user in
2759 # to believe that substantially more entropy is being collected
2760 # than in fact is - leading to a different class of security
2761 # risk. In high packet rate situations ethernet entropy
2762 # collection is also very expensive, possibly leading to as
2763 # much as a 50% drop in packets received.
2764 # This option is present to maintain backwards compatibility
2765 # if desired, however it cannot be recommended for use in any
2767 options RANDOM_ENABLE_ETHER # ether_input
2769 # Module to enable execution of application via emulators like QEMU
2770 options IMGACT_BINMISC
2772 # zlib I/O stream support
2773 # This enables support for compressed core dumps.
2777 # This enables support for Zstd compressed core dumps, GEOM_UZIP images,
2778 # and is required by zfs if statically linked.
2782 options BHND_LOGLEVEL # Logging threshold level
2785 device evdev # input event device support
2786 options EVDEV_SUPPORT # evdev support in legacy drivers
2787 options EVDEV_DEBUG # enable event debug msgs
2788 device uinput # install /dev/uinput cdev
2789 options UINPUT_DEBUG # enable uinput debug msgs
2791 # Encrypted kernel crash dumps.
2794 # Serial Peripheral Interface (SPI) support.
2795 device spibus # Bus support.
2796 device at45d # DataFlash driver
2798 device mx25l # SPIFlash driver
2800 device spigen # Generic access to SPI devices from userland.
2801 # Enable legacy /dev/spigenN name aliases for /dev/spigenX.Y devices.
2802 options SPIGEN_LEGACY_CDEVNAME # legacy device names for spigen
2804 # Compression supports.
2805 device zlib # gzip/zlib compression/decompression library
2806 device xz # xz_embedded LZMA de-compression library
2808 # Kernel support for stats(3).