3 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
5 # Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
6 # 'makeoptions', 'hints', etc. go into the kernel configuration that you
9 # Lines that begin with 'envvar hint.' should go into your hints file.
10 # See /boot/device.hints and/or the 'hints' config(8) directive.
12 # Please use ``make LINT'' to create an old-style LINT file if you want to
13 # do kernel test-builds.
15 # This file contains machine independent kernel configuration notes. For
16 # machine dependent notes, look in /sys/<arch>/conf/NOTES.
20 # NOTES conventions and style guide:
22 # Large block comments should begin and end with a line containing only a
25 # To describe a particular object, a block comment (if it exists) should
26 # come first. Next should come device, options, and hints lines in that
27 # order. All device and option lines must be described by a comment that
28 # doesn't just expand the device or option name. Use only a concise
29 # comment on the same line if possible. Very detailed descriptions of
30 # devices and subsystems belong in man pages.
32 # A space followed by a tab separates 'options' from an option name. Two
33 # spaces followed by a tab separate 'device' from a device name. Comments
34 # after an option or device should use one space after the comment character.
35 # To comment out a negative option that disables code and thus should not be
36 # enabled for LINT builds, precede 'options' with "#!".
40 # This is the ``identification'' of the kernel. Usually this should
41 # be the same as the name of your kernel.
46 # The `maxusers' parameter controls the static sizing of a number of
47 # internal system tables by a formula defined in subr_param.c.
48 # Omitting this parameter or setting it to 0 will cause the system to
49 # auto-size based on physical memory.
53 # To statically compile in device wiring instead of /boot/device.hints
54 #hints "LINT.hints" # Default places to look for devices.
56 # Use the following to compile in values accessible to the kernel
57 # through getenv() (or kenv(1) in userland). The format of the file
58 # is 'variable=value', see kenv(1)
63 # The `makeoptions' parameter allows variables to be passed to the
64 # generated Makefile in the build area.
66 # CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
67 # after most other flags. Here we use it to inhibit use of non-optimal
68 # gcc built-in functions (e.g., memcmp).
70 # DEBUG happens to be magic.
71 # The following is equivalent to 'config -g KERNELNAME' and creates
72 # 'kernel.debug' compiled with -g debugging as well as a normal
73 # 'kernel'. Use 'make install.debug' to install the debug kernel
74 # but that isn't normally necessary as the debug symbols are not loaded
75 # by the kernel and are not useful there anyway.
77 # KERNEL can be overridden so that you can change the default name of your
80 # MODULES_OVERRIDE can be used to limit modules built to a specific list.
82 makeoptions CONF_CFLAGS=-fno-builtin #Don't allow use of memcmp, etc.
83 #makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
84 #makeoptions KERNEL=foo #Build kernel "foo" and install "/foo"
85 # Only build ext2fs module plus those parts of the sound system I need.
86 #makeoptions MODULES_OVERRIDE="ext2fs sound/sound sound/driver/maestro3"
87 makeoptions DESTDIR=/tmp
90 # FreeBSD processes are subject to certain limits to their consumption
91 # of system resources. See getrlimit(2) for more details. Each
92 # resource limit has two values, a "soft" limit and a "hard" limit.
93 # The soft limits can be modified during normal system operation, but
94 # the hard limits are set at boot time. Their default values are
95 # in sys/<arch>/include/vmparam.h. There are two ways to change them:
97 # 1. Set the values at kernel build time. The options below are one
98 # way to allow that limit to grow to 1GB. They can be increased
99 # further by changing the parameters:
101 # 2. In /boot/loader.conf, set the tunables kern.maxswzone,
102 # kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
103 # kern.dflssiz, kern.maxssiz and kern.sgrowsiz.
105 # The options in /boot/loader.conf override anything in the kernel
106 # configuration file. See the function init_param1 in
107 # sys/kern/subr_param.c for more details.
110 options MAXDSIZ=(1024UL*1024*1024)
111 options MAXSSIZ=(128UL*1024*1024)
112 options DFLDSIZ=(1024UL*1024*1024)
115 # BLKDEV_IOSIZE sets the default block size used in user block
116 # device I/O. Note that this value will be overridden by the label
117 # when specifying a block device from a label with a non-0
118 # partition blocksize. The default is PAGE_SIZE.
120 options BLKDEV_IOSIZE=8192
123 # MAXPHYS and DFLTPHYS
125 # These are the maximal and safe 'raw' I/O block device access sizes.
126 # Reads and writes will be split into MAXPHYS chunks for known good
127 # devices and DFLTPHYS for the rest. Some applications have better
128 # performance with larger raw I/O access sizes. Note that certain VM
129 # parameters are derived from these values and making them too large
130 # can make an unbootable kernel.
132 # The defaults are 64K and 128K respectively.
133 options DFLTPHYS=(64*1024)
134 options MAXPHYS=(128*1024)
137 # This allows you to actually store this configuration file into
138 # the kernel binary itself. See config(8) for more details.
140 options INCLUDE_CONFIG_FILE # Include this file in kernel
143 # Compile-time defaults for various boot parameters
145 options BOOTVERBOSE=1
146 options BOOTHOWTO=RB_MULTIPLE
149 # Compile-time defaults for dmesg boot tagging
151 # Default boot tag; may use 'kern.boot_tag' loader tunable to override. The
152 # current boot's tag is also exposed via the 'kern.boot_tag' sysctl.
153 options BOOT_TAG=\"\"
154 # Maximum boot tag size the kernel's static buffer should accomodate. Maximum
155 # size for both BOOT_TAG and the assocated tunable.
156 options BOOT_TAG_SZ=32
158 options GEOM_BDE # Disk encryption.
159 options GEOM_CACHE # Disk cache.
160 options GEOM_CONCAT # Disk concatenation.
161 options GEOM_ELI # Disk encryption.
162 options GEOM_GATE # Userland services.
163 options GEOM_JOURNAL # Journaling.
164 options GEOM_LABEL # Providers labelization.
165 options GEOM_LINUX_LVM # Linux LVM2 volumes
166 options GEOM_MAP # Map based partitioning
167 options GEOM_MIRROR # Disk mirroring.
168 options GEOM_MULTIPATH # Disk multipath
169 options GEOM_NOP # Test class.
170 options GEOM_PART_APM # Apple partitioning
171 options GEOM_PART_BSD # BSD disklabel
172 options GEOM_PART_BSD64 # BSD disklabel64
173 options GEOM_PART_EBR # Extended Boot Records
174 options GEOM_PART_GPT # GPT partitioning
175 options GEOM_PART_LDM # Logical Disk Manager
176 options GEOM_PART_MBR # MBR partitioning
177 options GEOM_PART_VTOC8 # SMI VTOC8 disk label
178 options GEOM_RAID # Soft RAID functionality.
179 options GEOM_RAID3 # RAID3 functionality.
180 options GEOM_SHSEC # Shared secret.
181 options GEOM_STRIPE # Disk striping.
182 options GEOM_UZIP # Read-only compressed disks
183 options GEOM_VINUM # Vinum logical volume manager
184 options GEOM_VIRSTOR # Virtual storage.
185 options GEOM_ZERO # Performance testing helper.
188 # The root device and filesystem type can be compiled in;
189 # this provides a fallback option if the root device cannot
190 # be correctly guessed by the bootstrap code, or an override if
191 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
193 options ROOTDEVNAME=\"ufs:da0s2e\"
196 #####################################################################
199 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory. These options
200 # select which scheduler is compiled in.
202 # SCHED_4BSD is the historical, proven, BSD scheduler. It has a global run
203 # queue and no CPU affinity which makes it suboptimal for SMP. It has very
204 # good interactivity and priority selection.
206 # SCHED_ULE provides significant performance advantages over 4BSD on many
207 # workloads on SMP machines. It supports cpu-affinity, per-cpu runqueues
208 # and scheduler locks. It also has a stronger notion of interactivity
209 # which leads to better responsiveness even on uniprocessor machines. This
210 # is the default scheduler.
212 # SCHED_STATS is a debugging option which keeps some stats in the sysctl
213 # tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
219 #####################################################################
222 # SMP enables building of a Symmetric MultiProcessor Kernel.
225 options SMP # Symmetric MultiProcessor Kernel
227 # EARLY_AP_STARTUP releases the Application Processors earlier in the
228 # kernel startup process (before devices are probed) rather than at the
229 # end. This is a temporary option for use during the transition from
230 # late to early AP startup.
231 options EARLY_AP_STARTUP
233 # MAXCPU defines the maximum number of CPUs that can boot in the system.
234 # A default value should be already present, for every architecture.
237 # NUMA enables use of Non-Uniform Memory Access policies in various kernel
241 # MAXMEMDOM defines the maximum number of memory domains that can boot in the
242 # system. A default value should already be defined by every architecture.
245 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
246 # if the thread that currently owns the mutex is executing on another
247 # CPU. This behavior is enabled by default, so this option can be used
249 options NO_ADAPTIVE_MUTEXES
251 # ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
252 # if the thread that currently owns the rwlock is executing on another
253 # CPU. This behavior is enabled by default, so this option can be used
255 options NO_ADAPTIVE_RWLOCKS
257 # ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
258 # currently owns the sx lock is executing on another CPU.
259 # This behavior is enabled by default, so this option can be used to
261 options NO_ADAPTIVE_SX
263 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
264 # operation rather than inlining the simple cases. This can be used to
265 # shrink the size of the kernel text segment. Note that this behavior is
266 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
267 # and WITNESS options.
268 options MUTEX_NOINLINE
270 # RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
271 # operation rather than inlining the simple cases. This can be used to
272 # shrink the size of the kernel text segment. Note that this behavior is
273 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
274 # and WITNESS options.
275 options RWLOCK_NOINLINE
277 # SX_NOINLINE forces sx lock operations to call functions to perform each
278 # operation rather than inlining the simple cases. This can be used to
279 # shrink the size of the kernel text segment. Note that this behavior is
280 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
281 # and WITNESS options.
284 # SMP Debugging Options:
286 # CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
287 # structure used as backend in callout(9).
288 # PREEMPTION allows the threads that are in the kernel to be preempted by
289 # higher priority [interrupt] threads. It helps with interactivity
290 # and allows interrupt threads to run sooner rather than waiting.
291 # WARNING! Only tested on amd64 and i386.
292 # FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
293 # threads. Its sole use is to expose race conditions and other
294 # bugs during development. Enabling this option will reduce
295 # performance and increase the frequency of kernel panics by
296 # design. If you aren't sure that you need it then you don't.
297 # Relies on the PREEMPTION option. DON'T TURN THIS ON.
298 # SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
299 # used to hold active sleep queues as well as sleep wait message
301 # TURNSTILE_PROFILING enables rudimentary profiling of the hash table
302 # used to hold active lock queues.
303 # UMTX_PROFILING enables rudimentary profiling of the hash table used
304 # to hold active lock queues.
305 # WITNESS enables the witness code which detects deadlocks and cycles
306 # during locking operations.
307 # WITNESS_KDB causes the witness code to drop into the kernel debugger if
308 # a lock hierarchy violation occurs or if locks are held when going to
310 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
312 options FULL_PREEMPTION
315 options WITNESS_SKIPSPIN
317 # LOCK_PROFILING - Profiling locks. See LOCK_PROFILING(9) for details.
318 options LOCK_PROFILING
319 # Set the number of buffers and the hash size. The hash size MUST be larger
320 # than the number of buffers. Hash size should be prime.
321 options MPROF_BUFFERS="1536"
322 options MPROF_HASH_SIZE="1543"
324 # Profiling for the callout(9) backend.
325 options CALLOUT_PROFILING
327 # Profiling for internal hash tables.
328 options SLEEPQUEUE_PROFILING
329 options TURNSTILE_PROFILING
330 options UMTX_PROFILING
333 #####################################################################
334 # COMPATIBILITY OPTIONS
339 # Note that as a general rule, COMPAT_FREEBSD<n> depends on
340 # COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
342 # Enable FreeBSD4 compatibility syscalls
343 options COMPAT_FREEBSD4
345 # Enable FreeBSD5 compatibility syscalls
346 options COMPAT_FREEBSD5
348 # Enable FreeBSD6 compatibility syscalls
349 options COMPAT_FREEBSD6
351 # Enable FreeBSD7 compatibility syscalls
352 options COMPAT_FREEBSD7
354 # Enable FreeBSD9 compatibility syscalls
355 options COMPAT_FREEBSD9
357 # Enable FreeBSD10 compatibility syscalls
358 options COMPAT_FREEBSD10
360 # Enable FreeBSD11 compatibility syscalls
361 options COMPAT_FREEBSD11
363 # Enable FreeBSD12 compatibility syscalls
364 options COMPAT_FREEBSD12
366 # Enable Linux Kernel Programming Interface
367 options COMPAT_LINUXKPI
370 # These three options provide support for System V Interface
371 # Definition-style interprocess communication, in the form of shared
372 # memory, semaphores, and message queues, respectively.
379 #####################################################################
383 # Compile with kernel debugger related code.
388 # Print a stack trace of the current thread on the console for a panic.
393 # Don't enter the debugger for a panic. Intended for unattended operation
394 # where you may want to enter the debugger from the console, but still want
395 # the machine to recover from a panic.
397 options KDB_UNATTENDED
400 # Enable the ddb debugger backend.
405 # Print the numerical value of symbols in addition to the symbolic
411 # Enable the remote gdb debugger backend.
416 # Trashes list pointers when they become invalid (i.e., the element is
417 # removed from a list). Relatively inexpensive to enable.
419 options QUEUE_MACRO_DEBUG_TRASH
422 # Stores information about the last caller to modify the list object
423 # in the list object. Requires additional memory overhead.
425 #options QUEUE_MACRO_DEBUG_TRACE
428 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
429 # contents of the registered sysctl nodes on the console. It is disabled by
430 # default because it generates excessively verbose console output that can
431 # interfere with serial console operation.
436 # Enable textdump by default, this disables kernel core dumps.
438 options TEXTDUMP_PREFERRED
441 # Enable extra debug messages while performing textdumps.
443 options TEXTDUMP_VERBOSE
446 # NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
448 options NO_SYSCTL_DESCR
451 # MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
452 # allocations that are smaller than a page. The purpose is to isolate
453 # different malloc types into hash classes, so that any buffer
454 # overruns or use-after-free will usually only affect memory from
455 # malloc types in that hash class. This is purely a debugging tool;
456 # by varying the hash function and tracking which hash class was
457 # corrupted, the intersection of the hash classes from each instance
458 # will point to a single malloc type that is being misused. At this
459 # point inspection or memguard(9) can be used to catch the offending
462 options MALLOC_DEBUG_MAXZONES=8
465 # DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
466 # for the kernel used to detect modify-after-free scenarios. See the
467 # memguard(9) man page for more information on usage.
469 options DEBUG_MEMGUARD
472 # DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
475 options DEBUG_REDZONE
478 # EARLY_PRINTF enables support for calling a special printf (eprintf)
479 # very early in the kernel (before cn_init() has been called). This
480 # should only be used for debugging purposes early in boot. Normally,
481 # it is not defined. It is commented out here because this feature
482 # isn't generally available. And the required eputc() isn't defined.
484 #options EARLY_PRINTF
487 # KTRACE enables the system-call tracing facility ktrace(2). To be more
488 # SMP-friendly, KTRACE uses a worker thread to process most trace events
489 # asynchronously to the thread generating the event. This requires a
490 # pre-allocated store of objects representing trace events. The
491 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
492 # The size of the pool can be adjusted both at boottime and runtime via
493 # the kern.ktrace_request_pool tunable and sysctl.
495 options KTRACE #kernel tracing
496 options KTRACE_REQUEST_POOL=101
499 # KTR is a kernel tracing facility imported from BSD/OS. It is
500 # enabled with the KTR option. KTR_ENTRIES defines the number of
501 # entries in the circular trace buffer; it may be an arbitrary number.
502 # KTR_BOOT_ENTRIES defines the number of entries during the early boot,
503 # before malloc(9) is functional.
504 # KTR_COMPILE defines the mask of events to compile into the kernel as
505 # defined by the KTR_* constants in <sys/ktr.h>. KTR_MASK defines the
506 # initial value of the ktr_mask variable which determines at runtime
507 # what events to trace. KTR_CPUMASK determines which CPU's log
508 # events, with bit X corresponding to CPU X. The layout of the string
509 # passed as KTR_CPUMASK must match a series of bitmasks each of them
510 # separated by the "," character (ie:
511 # KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF). KTR_VERBOSE enables
512 # dumping of KTR events to the console by default. This functionality
513 # can be toggled via the debug.ktr_verbose sysctl and defaults to off
514 # if KTR_VERBOSE is not defined. See ktr(4) and ktrdump(8) for details.
517 options KTR_BOOT_ENTRIES=1024
518 options KTR_ENTRIES=(128*1024)
519 options KTR_COMPILE=(KTR_ALL)
520 options KTR_MASK=KTR_INTR
521 options KTR_CPUMASK=0x3
525 # ALQ(9) is a facility for the asynchronous queuing of records from the kernel
526 # to a vnode, and is employed by services such as ktr(4) to produce trace
527 # files based on a kernel event stream. Records are written asynchronously
528 # in a worker thread.
534 # The INVARIANTS option is used in a number of source files to enable
535 # extra sanity checking of internal structures. This support is not
536 # enabled by default because of the extra time it would take to check
537 # for these conditions, which can only occur as a result of
538 # programming errors.
543 # The INVARIANT_SUPPORT option makes us compile in support for
544 # verifying some of the internal structures. It is a prerequisite for
545 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
546 # called. The intent is that you can set 'INVARIANTS' for single
547 # source files (by changing the source file or specifying it on the
548 # command line) if you have 'INVARIANT_SUPPORT' enabled. Also, if you
549 # wish to build a kernel module with 'INVARIANTS', then adding
550 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
551 # infrastructure without the added overhead.
553 options INVARIANT_SUPPORT
556 # The KASSERT_PANIC_OPTIONAL option allows kasserts to fire without
557 # necessarily inducing a panic. Panic is the default behavior, but
558 # runtime options can configure it either entirely off, or off with a
561 options KASSERT_PANIC_OPTIONAL
564 # The DIAGNOSTIC option is used to enable extra debugging information
565 # and invariants checking. The added checks are too expensive or noisy
566 # for an INVARIANTS kernel and thus are disabled by default. It is
567 # expected that a kernel configured with DIAGNOSTIC will also have the
568 # INVARIANTS option enabled.
573 # REGRESSION causes optional kernel interfaces necessary only for regression
574 # testing to be enabled. These interfaces may constitute security risks
575 # when enabled, as they permit processes to easily modify aspects of the
576 # run-time environment to reproduce unlikely or unusual (possibly normally
577 # impossible) scenarios.
582 # This option lets some drivers co-exist that can't co-exist in a running
583 # system. This is used to be able to compile all kernel code in one go for
584 # quality assurance purposes (like this file, which the option takes it name
587 options COMPILING_LINT
590 # STACK enables the stack(9) facility, allowing the capture of kernel stack
591 # for the purpose of procinfo(1), etc. stack(9) will also be compiled in
592 # automatically if DDB(4) is compiled into the kernel.
597 # The NUM_CORE_FILES option specifies the limit for the number of core
598 # files generated by a particular process, when the core file format
599 # specifier includes the %I pattern. Since we only have 1 character for
600 # the core count in the format string, meaning the range will be 0-9, the
601 # maximum value allowed for this option is 10.
602 # This core file limit can be adjusted at runtime via the debug.ncores
605 options NUM_CORE_FILES=5
608 # The TSLOG option enables timestamped logging of events, especially
609 # function entries/exits, in order to track the time spent by the kernel.
610 # In particular, this is useful when investigating the early boot process,
611 # before it is possible to use more sophisticated tools like DTrace.
612 # The TSLOGSIZE option controls the size of the (preallocated, fixed
613 # length) buffer used for storing these events (default: 262144 records).
615 # For security reasons the TSLOG option should not be enabled on systems
616 # used in production.
619 options TSLOGSIZE=262144
622 #####################################################################
623 # PERFORMANCE MONITORING OPTIONS
626 # The hwpmc driver that allows the use of in-CPU performance monitoring
627 # counters for performance monitoring. The base kernel needs to be configured
628 # with the 'options' line, while the hwpmc device can be either compiled
629 # in or loaded as a loadable kernel module.
631 # Additional configuration options may be required on specific architectures,
632 # please see hwpmc(4).
634 device hwpmc # Driver (also a loadable module)
636 options HWPMC_HOOKS # Other necessary kernel hooks
639 #####################################################################
645 options INET #Internet communications protocols
646 options INET6 #IPv6 communications protocols
648 options RATELIMIT # TX rate limiting support
650 options ROUTETABLES=2 # allocated fibs up to 65536. default is 1.
651 # but that would be a bad idea as they are large.
653 options TCP_OFFLOAD # TCP offload support.
654 options TCP_RFC7413 # TCP Fast Open
658 # In order to enable IPSEC you MUST also add device crypto to
659 # your kernel configuration
660 options IPSEC #IP security (requires device crypto)
662 # Option IPSEC_SUPPORT does not enable IPsec, but makes it possible to
663 # load it as a kernel module. You still MUST add device crypto to your kernel
665 options IPSEC_SUPPORT
666 #options IPSEC_DEBUG #debug for IP security
669 # TLS framing and encryption/decryption of data over TCP sockets.
670 options KERN_TLS # TLS transmit and receive offload
674 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
676 options NETSMB #SMB/CIFS requester
678 # mchain library. It can be either loaded as KLD or compiled into kernel
681 # libalias library, performing NAT
685 # SCTP is a NEW transport protocol defined by
686 # RFC2960 updated by RFC3309 and RFC3758.. and
687 # soon to have a new base RFC and many many more
688 # extensions. This release supports all the extensions
689 # including many drafts (most about to become RFC's).
690 # It is the reference implementation of SCTP
691 # and is quite well tested.
693 # Note YOU MUST have both INET and INET6 defined.
694 # You don't have to enable V6, but SCTP is
695 # dual stacked and so far we have not torn apart
696 # the V6 and V4.. since an association can span
697 # both a V6 and V4 address at the SAME time :-)
699 # The SCTP_SUPPORT option does not enable SCTP, but provides the necessary
700 # support for loading SCTP as a loadable kernel module.
705 # There are bunches of options:
706 # this one turns on all sorts of
707 # nastily printing that you can
708 # do. It's all controlled by a
709 # bit mask (settable by socket opt and
710 # by sysctl). Including will not cause
711 # logging until you set the bits.. but it
712 # can be quite verbose.. so without this
713 # option we don't do any of the tests for
714 # bits and prints.. which makes the code run
715 # faster.. if you are not debugging don't use.
719 # All that options after that turn on specific types of
720 # logging. You can monitor CWND growth, flight size
721 # and all sorts of things. Go look at the code and
722 # see. I have used this to produce interesting
723 # charts and graphs as well :->
725 # I have not yet committed the tools to get and print
726 # the logs, I will do that eventually .. before then
727 # if you want them send me an email rrs@freebsd.org
728 # You basically must have ktr(4) enabled for these
729 # and you then set the sysctl to turn on/off various
730 # logging bits. Use ktrdump(8) to pull the log and run
731 # it through a display program.. and graphs and other
734 options SCTP_LOCK_LOGGING
735 options SCTP_MBUF_LOGGING
736 options SCTP_MBCNT_LOGGING
737 options SCTP_PACKET_LOGGING
738 options SCTP_LTRACE_CHUNKS
739 options SCTP_LTRACE_ERRORS
741 # altq(9). Enable the base part of the hooks with the ALTQ option.
742 # Individual disciplines must be built into the base system and can not be
743 # loaded as modules at this point. ALTQ requires a stable TSC so if yours is
744 # broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
747 options ALTQ_CBQ # Class Based Queueing
748 options ALTQ_RED # Random Early Detection
749 options ALTQ_RIO # RED In/Out
750 options ALTQ_CODEL # CoDel Active Queueing
751 options ALTQ_HFSC # Hierarchical Packet Scheduler
752 options ALTQ_FAIRQ # Fair Packet Scheduler
753 options ALTQ_CDNR # Traffic conditioner
754 options ALTQ_PRIQ # Priority Queueing
755 options ALTQ_NOPCC # Required if the TSC is unusable
758 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
759 # Individual node types can be enabled with the corresponding option
760 # listed below; however, this is not strictly necessary as netgraph
761 # will automatically load the corresponding KLD module if the node type
762 # is not already compiled into the kernel. Each type below has a
763 # corresponding man page, e.g., ng_async(8).
764 options NETGRAPH # netgraph(4) system
765 options NETGRAPH_DEBUG # enable extra debugging, this
766 # affects netgraph(4) and nodes
768 options NETGRAPH_ASYNC
769 options NETGRAPH_ATMLLC
770 options NETGRAPH_ATM_ATMPIF
771 options NETGRAPH_BLUETOOTH # ng_bluetooth(4)
772 options NETGRAPH_BLUETOOTH_HCI # ng_hci(4)
773 options NETGRAPH_BLUETOOTH_L2CAP # ng_l2cap(4)
774 options NETGRAPH_BLUETOOTH_SOCKET # ng_btsocket(4)
775 options NETGRAPH_BLUETOOTH_UBT # ng_ubt(4)
776 options NETGRAPH_BLUETOOTH_UBTBCMFW # ubtbcmfw(4)
778 options NETGRAPH_BRIDGE
780 options NETGRAPH_CHECKSUM
781 options NETGRAPH_CISCO
782 options NETGRAPH_DEFLATE
783 options NETGRAPH_DEVICE
784 options NETGRAPH_ECHO
785 options NETGRAPH_EIFACE
786 options NETGRAPH_ETHER
787 options NETGRAPH_FRAME_RELAY
789 options NETGRAPH_GIF_DEMUX
790 options NETGRAPH_HOLE
791 options NETGRAPH_IFACE
792 options NETGRAPH_IP_INPUT
793 options NETGRAPH_IPFW
794 options NETGRAPH_KSOCKET
795 options NETGRAPH_L2TP
797 options NETGRAPH_MPPC_COMPRESSION
798 options NETGRAPH_MPPC_ENCRYPTION
799 options NETGRAPH_NETFLOW
801 options NETGRAPH_ONE2MANY
802 options NETGRAPH_PATCH
803 options NETGRAPH_PIPE
805 options NETGRAPH_PPPOE
806 options NETGRAPH_PPTPGRE
807 options NETGRAPH_PRED1
808 options NETGRAPH_RFC1490
809 options NETGRAPH_SOCKET
810 options NETGRAPH_SPLIT
811 options NETGRAPH_SPPP
813 options NETGRAPH_TCPMSS
817 options NETGRAPH_VLAN
819 # NgATM - Netgraph ATM
821 options NGATM_ATMBASE
827 device mn # Munich32x/Falc54 Nx64kbit/sec cards.
829 # Network stack virtualization.
831 options VNET_DEBUG # debug for VIMAGE
834 # Network interfaces:
835 # The `loop' device is MANDATORY when networking is enabled.
838 # The `ether' device provides generic code to handle
839 # Ethernets; it is MANDATORY when an Ethernet device driver is
843 # The `vlan' device implements the VLAN tagging of Ethernet frames
844 # according to IEEE 802.1Q.
847 # The `vxlan' device implements the VXLAN encapsulation of Ethernet
848 # frames in UDP packets according to RFC7348.
851 # The `wlan' device provides generic code to support 802.11
852 # drivers, including host AP mode; it is MANDATORY for the wi,
853 # and ath drivers and will eventually be required by all 802.11 drivers.
855 options IEEE80211_DEBUG #enable debugging msgs
856 options IEEE80211_SUPPORT_MESH #enable 802.11s D3.0 support
857 options IEEE80211_SUPPORT_TDMA #enable TDMA support
859 # The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
860 # support for WEP, TKIP, and AES-CCMP crypto protocols optionally
861 # used with 802.11 devices that depend on the `wlan' module.
866 # The `wlan_xauth' device provides support for external (i.e. user-mode)
867 # authenticators for use with 802.11 drivers that use the `wlan'
868 # module and support 802.1x and/or WPA security protocols.
871 # The `wlan_acl' device provides a MAC-based access control mechanism
872 # for use with 802.11 drivers operating in ap mode and using the
874 # The 'wlan_amrr' device provides AMRR transmit rate control algorithm
878 # The `sppp' device serves a similar role for certain types
879 # of synchronous PPP links (like `cx', `ar').
882 # The `bpf' device enables the Berkeley Packet Filter. Be
883 # aware of the legal and administrative consequences of enabling this
884 # option. DHCP requires bpf.
887 # The `netmap' device implements memory-mapped access to network
888 # devices from userspace, enabling wire-speed packet capture and
889 # generation even at 10Gbit/s. Requires support in the device
890 # driver. Supported drivers are ixgbe, e1000, re.
893 # The `disc' device implements a minimal network interface,
894 # which throws away all packets sent and never receives any. It is
895 # included for testing and benchmarking purposes.
898 # The `epair' device implements a virtual back-to-back connected Ethernet
899 # like interface pair.
902 # The `edsc' device implements a minimal Ethernet interface,
903 # which discards all packets sent and receives none.
906 # The `tuntap' device implements (user-)ppp, nos-tun(8) and a pty-like virtual
910 # The `gif' device implements IPv6 over IP4 tunneling,
911 # IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
912 # IPv6 over IPv6 tunneling.
913 # The `gre' device implements GRE (Generic Routing Encapsulation) tunneling,
914 # as specified in the RFC 2784 and RFC 2890.
915 # The `me' device implements Minimal Encapsulation within IPv4 as
916 # specified in the RFC 2004.
917 # The XBONEHACK option allows the same pair of addresses to be configured on
918 # multiple gif interfaces.
924 # The `stf' device implements 6to4 encapsulation.
927 # The pf packet filter consists of three devices:
928 # The `pf' device provides /dev/pf and the firewall code itself.
929 # The `pflog' device provides the pflog0 interface which logs packets.
930 # The `pfsync' device provides the pfsync0 interface used for
931 # synchronization of firewall state tables (over the net).
939 # Common Address Redundancy Protocol. See carp(4) for more details.
945 # Link aggregation interface.
949 # Internet family options:
951 # MROUTING enables the kernel multicast packet forwarder, which works
952 # with mrouted and XORP.
954 # IPFIREWALL enables support for IP firewall construction, in
955 # conjunction with the `ipfw' program. IPFIREWALL_VERBOSE sends
956 # logged packets to the system logger. IPFIREWALL_VERBOSE_LIMIT
957 # limits the number of times a matching entry can be logged.
959 # WARNING: IPFIREWALL defaults to a policy of "deny ip from any to any"
960 # and if you do not add other rules during startup to allow access,
961 # YOU WILL LOCK YOURSELF OUT. It is suggested that you set firewall_type=open
962 # in /etc/rc.conf when first enabling this feature, then refining the
963 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
964 # feature works properly.
966 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
967 # allow everything. Use with care, if a cracker can crash your
968 # firewall machine, they can get to your protected machines. However,
969 # if you are using it as an as-needed filter for specific problems as
970 # they arise, then this may be for you. Changing the default to 'allow'
971 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
974 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''. It
975 # depends on IPFIREWALL if compiled into the kernel.
977 # IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
980 # IPFIREWALL_NAT64 adds support for in kernel NAT64 in ipfw.
982 # IPFIREWALL_NPTV6 adds support for in kernel NPTv6 in ipfw.
984 # IPFIREWALL_PMOD adds support for protocols modification module. Currently
985 # it supports only TCP MSS modification.
987 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
988 # packets without touching the TTL). This can be useful to hide firewalls
989 # from traceroute and similar tools.
991 # PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
993 # TCPDEBUG enables code which keeps traces of the TCP state machine
994 # for sockets with the SO_DEBUG option set, which can then be examined
995 # using the trpt(8) utility.
997 # TCPPCAP enables code which keeps the last n packets sent and received
1000 # TCP_BLACKBOX enables enhanced TCP event logging.
1002 # TCP_HHOOK enables the hhook(9) framework hooks for the TCP stack.
1004 # ROUTE_MPATH provides support for multipath routing.
1006 options MROUTING # Multicast routing
1007 options IPFIREWALL #firewall
1008 options IPFIREWALL_VERBOSE #enable logging to syslogd(8)
1009 options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
1010 options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default
1011 options IPFIREWALL_NAT #ipfw kernel nat support
1012 options IPFIREWALL_NAT64 #ipfw kernel NAT64 support
1013 options IPFIREWALL_NPTV6 #ipfw kernel IPv6 NPT support
1014 options IPDIVERT #divert sockets
1015 options IPFILTER #ipfilter support
1016 options IPFILTER_LOG #ipfilter logging
1017 options IPFILTER_LOOKUP #ipfilter pools
1018 options IPFILTER_DEFAULT_BLOCK #block all packets by default
1019 options IPSTEALTH #support for stealth forwarding
1020 options PF_DEFAULT_TO_DROP #drop everything by default
1023 options TCP_BLACKBOX
1027 # The MBUF_STRESS_TEST option enables options which create
1028 # various random failures / extreme cases related to mbuf
1029 # functions. See mbuf(9) for a list of available test cases.
1030 # MBUF_PROFILING enables code to profile the mbuf chains
1031 # exiting the system (via participating interfaces) and
1032 # return a logarithmic histogram of monitored parameters
1033 # (e.g. packet size, wasted space, number of mbufs in chain).
1034 options MBUF_STRESS_TEST
1035 options MBUF_PROFILING
1037 # Statically link in accept filters
1038 options ACCEPT_FILTER_DATA
1039 options ACCEPT_FILTER_DNS
1040 options ACCEPT_FILTER_HTTP
1042 # TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
1043 # carried in TCP option 19. This option is commonly used to protect
1044 # TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
1045 # This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
1046 # This requires the use of 'device crypto' and either 'options IPSEC' or
1047 # 'options IPSEC_SUPPORT'.
1048 options TCP_SIGNATURE #include support for RFC 2385
1050 # DUMMYNET enables the "dummynet" bandwidth limiter. You need IPFIREWALL
1051 # as well. See dummynet(4) and ipfw(8) for more info. When you run
1052 # DUMMYNET it is advisable to also have at least "options HZ=1000" to achieve
1053 # a smooth scheduling of the traffic.
1056 # The DEBUGNET option enables a basic debug/panic-time networking API. It
1057 # is used by NETDUMP and NETGDB.
1060 # The NETDUMP option enables netdump(4) client support in the kernel.
1061 # This allows a panicking kernel to transmit a kernel dump to a remote host.
1064 # The NETGDB option enables netgdb(4) support in the kernel. This allows a
1065 # panicking kernel to be debugged as a GDB remote over the network.
1068 #####################################################################
1069 # FILESYSTEM OPTIONS
1072 # Only the root filesystem needs to be statically compiled or preloaded
1073 # as module; everything else will be automatically loaded at mount
1074 # time. Some people still prefer to statically compile other
1075 # filesystems as well.
1077 # NB: The UNION filesystem was known to be buggy in the past. It is now
1078 # being actively maintained, although there are still some issues being
1082 # One of these is mandatory:
1083 options FFS #Fast filesystem
1084 options NFSCL #Network File System client
1086 # The rest are optional:
1087 options AUTOFS #Automounter filesystem
1088 options CD9660 #ISO 9660 filesystem
1089 options FDESCFS #File descriptor filesystem
1090 options FUSEFS #FUSEFS support module
1091 options MSDOSFS #MS DOS File System (FAT, FAT32)
1092 options NFSLOCKD #Network Lock Manager
1093 options NFSD #Network Filesystem Server
1094 options KGSSAPI #Kernel GSSAPI implementation
1096 options NULLFS #NULL filesystem
1097 options PROCFS #Process filesystem (requires PSEUDOFS)
1098 options PSEUDOFS #Pseudo-filesystem framework
1099 options PSEUDOFS_TRACE #Debugging support for PSEUDOFS
1100 options SMBFS #SMB/CIFS filesystem
1101 options TMPFS #Efficient memory filesystem
1102 options UDF #Universal Disk Format
1103 options UNIONFS #Union filesystem
1104 # The xFS_ROOT options REQUIRE the associated ``options xFS''
1105 options NFS_ROOT #NFS usable as root device
1107 # Soft updates is a technique for improving filesystem speed and
1108 # making abrupt shutdown less risky.
1112 # Extended attributes allow additional data to be associated with files,
1113 # and is used for ACLs, Capabilities, and MAC labels.
1114 # See src/sys/ufs/ufs/README.extattr for more information.
1116 options UFS_EXTATTR_AUTOSTART
1118 # Access Control List support for UFS filesystems. The current ACL
1119 # implementation requires extended attribute support, UFS_EXTATTR,
1120 # for the underlying filesystem.
1121 # See src/sys/ufs/ufs/README.acls for more information.
1124 # Directory hashing improves the speed of operations on very large
1125 # directories at the expense of some memory.
1128 # Gjournal-based UFS journaling support.
1129 options UFS_GJOURNAL
1131 # Make space in the kernel for a root filesystem on a md device.
1132 # Define to the number of kilobytes to reserve for the filesystem.
1133 # This is now optional.
1134 # If not defined, the root filesystem passed in as the MFS_IMAGE makeoption
1135 # will be automatically embedded in the kernel during linking. Its exact size
1136 # will be consumed within the kernel.
1137 # If defined, the old way of embedding the filesystem in the kernel will be
1138 # used. That is to say MD_ROOT_SIZE KB will be allocated in the kernel and
1139 # later, the filesystem image passed in as the MFS_IMAGE makeoption will be
1140 # dd'd into the reserved space if it fits.
1141 options MD_ROOT_SIZE=10
1143 # Make the md device a potential root device, either with preloaded
1144 # images of type mfs_root or md_root.
1147 # Write-protect the md root device so that it may not be mounted writeable.
1148 options MD_ROOT_READONLY
1150 # Allow to read MD image from external memory regions
1153 # Disk quotas are supported when this option is enabled.
1154 options QUOTA #enable disk quotas
1156 # If you are running a machine just as a fileserver for PC and MAC
1157 # users, using SAMBA, you may consider setting this option
1158 # and keeping all those users' directories on a filesystem that is
1159 # mounted with the suiddir option. This gives new files the same
1160 # ownership as the directory (similar to group). It's a security hole
1161 # if you let these users run programs, so confine it to file-servers
1162 # (but it'll save you lots of headaches in those cases). Root owned
1163 # directories are exempt and X bits are cleared. The suid bit must be
1164 # set on the directory as well; see chmod(1). PC owners can't see/set
1165 # ownerships so they keep getting their toes trodden on. This saves
1166 # you all the support calls as the filesystem it's used on will act as
1167 # they expect: "It's my dir so it must be my file".
1172 options NFS_MINATTRTIMO=3 # VREG attrib cache timeout in sec
1173 options NFS_MAXATTRTIMO=60
1174 options NFS_MINDIRATTRTIMO=30 # VDIR attrib cache timeout in sec
1175 options NFS_MAXDIRATTRTIMO=60
1176 options NFS_DEBUG # Enable NFS Debugging
1179 # Add support for the EXT2FS filesystem of Linux fame. Be a bit
1180 # careful with this - the ext2fs code has a tendency to lag behind
1181 # changes and not be exercised very much, so mounting read/write could
1182 # be dangerous (and even mounting read only could result in panics.)
1186 # The system memory devices; /dev/mem, /dev/kmem
1189 # The kernel symbol table device; /dev/ksyms
1192 # Optional character code conversion support with LIBICONV.
1193 # Each option requires their base file system and LIBICONV.
1194 options CD9660_ICONV
1195 options MSDOSFS_ICONV
1199 #####################################################################
1202 # Real time extensions added in the 1993 POSIX
1203 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1205 options _KPOSIX_PRIORITY_SCHEDULING
1206 # p1003_1b_semaphores are very experimental,
1207 # user should be ready to assist in debugging if problems arise.
1208 options P1003_1B_SEMAPHORES
1210 # POSIX message queue
1211 options P1003_1B_MQUEUE
1213 #####################################################################
1214 # SECURITY POLICY PARAMETERS
1216 # Support for BSM audit
1219 # Support for Mandatory Access Control (MAC):
1222 options MAC_BSDEXTENDED
1228 options MAC_PARTITION
1230 options MAC_SEEOTHERUIDS
1234 # Support for Capsicum
1235 options CAPABILITIES # fine-grained rights on file descriptors
1236 options CAPABILITY_MODE # sandboxes with no global namespace access
1239 #####################################################################
1242 # The granularity of operation is controlled by the kernel option HZ whose
1243 # default value (1000 on most architectures) means a granularity of 1ms
1244 # (1s/HZ). Historically, the default was 100, but finer granularity is
1245 # required for DUMMYNET and other systems on modern hardware. There are
1246 # reasonable arguments that HZ should, in fact, be 100 still; consider,
1247 # that reducing the granularity too much might cause excessive overhead in
1248 # clock interrupt processing, potentially causing ticks to be missed and thus
1249 # actually reducing the accuracy of operation.
1253 # Enable support for the kernel PLL to use an external PPS signal,
1254 # under supervision of [x]ntpd(8)
1255 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
1259 # Enable support for generic feed-forward clocks in the kernel.
1260 # The feed-forward clock support is an alternative to the feedback oriented
1261 # ntpd/system clock approach, and is to be used with a feed-forward
1262 # synchronization algorithm such as the RADclock:
1263 # More info here: http://www.synclab.org/radclock
1268 #####################################################################
1271 # SCSI DEVICE CONFIGURATION
1273 # The SCSI subsystem consists of the `base' SCSI code, a number of
1274 # high-level SCSI device `type' drivers, and the low-level host-adapter
1275 # device drivers. The host adapters are listed in the ISA and PCI
1276 # device configuration sections below.
1278 # It is possible to wire down your SCSI devices so that a given bus,
1279 # target, and LUN always come on line as the same device unit. In
1280 # earlier versions the unit numbers were assigned in the order that
1281 # the devices were probed on the SCSI bus. This means that if you
1282 # removed a disk drive, you may have had to rewrite your /etc/fstab
1283 # file, and also that you had to be careful when adding a new disk
1284 # as it may have been probed earlier and moved your device configuration
1287 # This old behavior is maintained as the default behavior. The unit
1288 # assignment begins with the first non-wired down unit for a device
1289 # type. For example, if you wire a disk as "da3" then the first
1290 # non-wired disk will be assigned da4.
1292 # The syntax for wiring down devices is:
1294 envvar hint.scbus.0.at="ahc0"
1295 envvar hint.scbus.1.at="ahc1"
1296 envvar hint.scbus.1.bus="0"
1297 envvar hint.scbus.3.at="ahc2"
1298 envvar hint.scbus.3.bus="0"
1299 envvar hint.scbus.2.at="ahc2"
1300 envvar hint.scbus.2.bus="1"
1301 envvar hint.da.0.at="scbus0"
1302 envvar hint.da.0.target="0"
1303 envvar hint.da.0.unit="0"
1304 envvar hint.da.1.at="scbus3"
1305 envvar hint.da.1.target="1"
1306 envvar hint.da.2.at="scbus2"
1307 envvar hint.da.2.target="3"
1308 envvar hint.sa.1.at="scbus1"
1309 envvar hint.sa.1.target="6"
1311 # "units" (SCSI logical unit number) that are not specified are
1312 # treated as if specified as LUN 0.
1314 # All SCSI devices allocate as many units as are required.
1316 # The ch driver drives SCSI Media Changer ("jukebox") devices.
1318 # The da driver drives SCSI Direct Access ("disk") and Optical Media
1321 # The sa driver drives SCSI Sequential Access ("tape") devices.
1323 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1325 # The ses driver drives SCSI Environment Services ("ses") and
1326 # SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1328 # The pt driver drives SCSI Processor devices.
1330 # The sg driver provides a passthrough API that is compatible with the
1331 # Linux SG driver. It will work in conjunction with the COMPAT_LINUX
1332 # option to run linux SG apps. It can also stand on its own and provide
1333 # source level API compatibility for porting apps to FreeBSD.
1335 # Target Mode support is provided here but also requires that a SIM
1336 # (SCSI Host Adapter Driver) provide support as well.
1338 # The targ driver provides target mode support as a Processor type device.
1339 # It exists to give the minimal context necessary to respond to Inquiry
1340 # commands. There is a sample user application that shows how the rest
1341 # of the command support might be done in /usr/share/examples/scsi_target.
1343 # The targbh driver provides target mode support and exists to respond
1344 # to incoming commands that do not otherwise have a logical unit assigned
1347 # The pass driver provides a passthrough API to access the CAM subsystem.
1349 device scbus #base SCSI code
1350 device ch #SCSI media changers
1351 device da #SCSI direct access devices (aka disks)
1352 device sa #SCSI tapes
1353 device cd #SCSI CD-ROMs
1354 device ses #Enclosure Services (SES and SAF-TE)
1355 device pt #SCSI processor
1356 device targ #SCSI Target Mode Code
1357 device targbh #SCSI Target Mode Blackhole Device
1358 device pass #CAM passthrough driver
1359 device sg #Linux SCSI passthrough
1360 device ctl #CAM Target Layer
1363 # debugging options:
1364 # CAMDEBUG Compile in all possible debugging.
1365 # CAM_DEBUG_COMPILE Debug levels to compile in.
1366 # CAM_DEBUG_FLAGS Debug levels to enable on boot.
1367 # CAM_DEBUG_BUS Limit debugging to the given bus.
1368 # CAM_DEBUG_TARGET Limit debugging to the given target.
1369 # CAM_DEBUG_LUN Limit debugging to the given lun.
1370 # CAM_DEBUG_DELAY Delay in us after printing each debug line.
1371 # CAM_IO_STATS Publish additional CAM device statics by sysctl
1373 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1374 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1375 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
1376 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
1377 # queue after a bus reset, and the number of milliseconds to
1378 # freeze the device queue after a bus device reset. This
1379 # can be changed at boot and runtime with the
1380 # kern.cam.scsi_delay tunable/sysctl.
1382 options CAM_DEBUG_COMPILE=-1
1383 options CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
1384 options CAM_DEBUG_BUS=-1
1385 options CAM_DEBUG_TARGET=-1
1386 options CAM_DEBUG_LUN=-1
1387 options CAM_DEBUG_DELAY=1
1388 options CAM_MAX_HIGHPOWER=4
1389 options SCSI_NO_SENSE_STRINGS
1390 options SCSI_NO_OP_STRINGS
1391 options SCSI_DELAY=5000 # Be pessimistic about Joe SCSI device
1392 options CAM_IOSCHED_DYNAMIC
1393 options CAM_IO_STATS
1394 options CAM_TEST_FAILURE
1396 # Options for the CAM CDROM driver:
1397 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1398 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1399 # enforced if there is I/O waiting for another LUN
1400 # The compiled in defaults for these variables are 2 and 10 seconds,
1403 # These can also be changed on the fly with the following sysctl variables:
1404 # kern.cam.cd.changer.min_busy_seconds
1405 # kern.cam.cd.changer.max_busy_seconds
1407 options CHANGER_MIN_BUSY_SECONDS=2
1408 options CHANGER_MAX_BUSY_SECONDS=10
1410 # Options for the CAM sequential access driver:
1411 # SA_IO_TIMEOUT: Timeout for read/write/wfm operations, in minutes
1412 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
1413 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
1414 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
1415 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
1416 options SA_IO_TIMEOUT=4
1417 options SA_SPACE_TIMEOUT=60
1418 options SA_REWIND_TIMEOUT=(2*60)
1419 options SA_ERASE_TIMEOUT=(4*60)
1420 options SA_1FM_AT_EOD
1422 # Optional timeout for the CAM processor target (pt) device
1423 # This is specified in seconds. The default is 60 seconds.
1424 options SCSI_PT_DEFAULT_TIMEOUT=60
1426 # Optional enable of doing SES passthrough on other devices (e.g., disks)
1428 # Normally disabled because a lot of newer SCSI disks report themselves
1429 # as having SES capabilities, but this can then clot up attempts to build
1430 # a topology with the SES device that's on the box these drives are in....
1431 options SES_ENABLE_PASSTHROUGH
1434 #####################################################################
1435 # MISCELLANEOUS DEVICES AND OPTIONS
1437 device pty #BSD-style compatibility pseudo ttys
1438 device nmdm #back-to-back tty devices
1439 device md #Memory/malloc disk
1440 device snp #Snoop device - to look at pty/vty/etc..
1441 device ccd #Concatenated disk driver
1442 device firmware #firmware(9) support
1444 # Kernel side iconv library
1447 # Size of the kernel message buffer. Should be N * pagesize.
1448 options MSGBUF_SIZE=40960
1451 #####################################################################
1452 # HARDWARE BUS CONFIGURATION
1455 # PCI bus & PCI options:
1458 options PCI_HP # PCI-Express native HotPlug
1459 options PCI_IOV # PCI SR-IOV support
1462 #####################################################################
1463 # HARDWARE DEVICE CONFIGURATION
1465 # For ISA the required hints are listed.
1466 # PCI, CardBus, SD/MMC and pccard are self identifying buses, so
1467 # no hints are needed.
1470 # Mandatory devices:
1473 # These options are valid for other keyboard drivers as well.
1474 options KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
1475 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
1477 device kbdmux # keyboard multiplexer
1478 options KBDMUX_DFLT_KEYMAP # specify the built-in keymap
1479 makeoptions KBDMUX_DFLT_KEYMAP=it.iso
1481 options FB_DEBUG # Frame buffer debugging
1483 # Enable experimental features of the syscons terminal emulator (teken).
1484 options TEKEN_CONS25 # cons25-style terminal emulation
1485 options TEKEN_UTF8 # UTF-8 output handling
1487 # The vt video console driver.
1489 options VT_ALT_TO_ESC_HACK=1 # Prepend ESC sequence to ALT keys
1490 options VT_MAXWINDOWS=16 # Number of virtual consoles
1491 options VT_TWOBUTTON_MOUSE # Use right mouse button to paste
1493 # The following options set the maximum framebuffer size.
1494 options VT_FB_MAX_HEIGHT=480
1495 options VT_FB_MAX_WIDTH=640
1497 # The following options will let you change the default vt terminal colors.
1498 options TERMINAL_NORM_ATTR=(FG_GREEN|BG_BLACK)
1499 options TERMINAL_KERN_ATTR=(FG_LIGHTRED|BG_BLACK)
1506 # SCSI host adapters:
1508 # aacraid: Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming
1509 # families. Container interface, CAM required.
1510 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1511 # 19160x/29160x, aic7770/aic78xx
1512 # ahd: Adaptec 29320/39320 Controllers.
1513 # esp: Emulex ESP, NCR 53C9x and QLogic FAS families based controllers
1514 # including the AMD Am53C974 (found on devices such as the Tekram
1515 # DC-390(T)) and the Sun ESP and FAS families of controllers
1516 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1517 # ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1518 # ISP 12160 Ultra3 SCSI,
1519 # Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1520 # Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1521 # Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
1522 # ispfw: Firmware module for Qlogic host adapters
1523 # mpr: LSI-Logic MPT/Fusion Gen 3
1524 # mps: LSI-Logic MPT/Fusion Gen 2
1525 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
1526 # or FC9x9 Fibre Channel host adapters.
1527 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1528 # 53C810, 53C810A, 53C815, 53C825, 53C825A, 53C860, 53C875,
1529 # 53C876, 53C885, 53C895, 53C895A, 53C896, 53C897, 53C1510D,
1530 # 53C1010-33, 53C1010-66.
1536 device iscsi_initiator
1538 envvar hint.isp.0.disable="1"
1539 envvar hint.isp.0.role="3"
1540 envvar hint.isp.0.prefer_iomap="1"
1541 envvar hint.isp.0.prefer_memmap="1"
1542 envvar hint.isp.0.fwload_disable="1"
1543 envvar hint.isp.0.ignore_nvram="1"
1544 envvar hint.isp.0.fullduplex="1"
1545 envvar hint.isp.0.topology="lport"
1546 envvar hint.isp.0.topology="nport"
1547 envvar hint.isp.0.topology="lport-only"
1548 envvar hint.isp.0.topology="nport-only"
1549 # we can't get u_int64_t types, nor can we get strings if it's got
1550 # a leading 0x, hence this silly dodge.
1551 envvar hint.isp.0.portwnn="w50000000aaaa0000"
1552 envvar hint.isp.0.nodewnn="w50000000aaaa0001"
1554 device mpr # LSI-Logic MPT-Fusion 3
1555 device mps # LSI-Logic MPT-Fusion 2
1556 device mpt # LSI-Logic MPT-Fusion
1559 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1560 # controllers that have it configured only if this option is set. Unfortunately,
1561 # this doesn't work on some motherboards, which prevents it from being the
1563 options AHC_ALLOW_MEMIO
1565 # Dump the contents of the ahc controller configuration PROM.
1566 options AHC_DUMP_EEPROM
1568 # Bitmap of units to enable targetmode operations.
1569 options AHC_TMODE_ENABLE
1571 # Compile in Aic7xxx Debugging code.
1574 # Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1575 options AHC_DEBUG_OPTS
1577 # Print register bitfields in debug output. Adds ~128k to driver
1579 options AHC_REG_PRETTY_PRINT
1581 # Compile in aic79xx debugging code.
1584 # Aic79xx driver debugging options. Adds ~215k to driver. See ahd(4).
1585 options AHD_DEBUG_OPTS=0xFFFFFFFF
1587 # Print human-readable register definitions when debugging
1588 options AHD_REG_PRETTY_PRINT
1590 # Bitmap of units to enable targetmode operations.
1591 options AHD_TMODE_ENABLE
1593 # Options used in dev/iscsi (Software iSCSI stack)
1595 options ISCSI_INITIATOR_DEBUG=9
1597 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
1599 # ISP_TARGET_MODE - enable target mode operation
1601 options ISP_TARGET_MODE=1
1603 # ISP_DEFAULT_ROLES - default role
1607 # both=3 (not supported currently)
1609 # ISP_INTERNAL_TARGET (trivial internal disk target, for testing)
1611 options ISP_DEFAULT_ROLES=0
1613 #options SYM_SETUP_SCSI_DIFF #-HVD support for 825a, 875, 885
1614 # disabled:0 (default), enabled:1
1615 #options SYM_SETUP_PCI_PARITY #-PCI parity checking
1616 # disabled:0, enabled:1 (default)
1617 #options SYM_SETUP_MAX_LUN #-Number of LUNs supported
1618 # default:8, range:[1..64]
1621 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
1622 # These controllers have a SCSI-like interface, and require the
1623 # CAM infrastructure.
1628 # Intel Integrated RAID controllers.
1629 # This driver was developed and is maintained by Intel. Contacts
1630 # at Intel for this driver are
1631 # "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
1632 # "Leubner, Achim" <achim.leubner@intel.com>.
1637 # Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
1638 # firmware. These controllers have a SCSI-like interface, and require
1639 # the CAM infrastructure.
1644 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers. Only
1645 # one entry is needed; the code will find and configure all supported
1648 device ida # Compaq Smart RAID
1649 device mlx # Mylex DAC960
1650 device amr # AMI MegaRAID
1651 device amrp # SCSI Passthrough interface (optional, CAM req.)
1652 device mfi # LSI MegaRAID SAS
1653 device mfip # LSI MegaRAID SAS passthrough, requires CAM
1655 device mrsas # LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
1660 device twe # 3ware ATA RAID
1663 # Serial ATA host controllers:
1665 # ahci: Advanced Host Controller Interface (AHCI) compatible
1666 # mvs: Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
1667 # siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
1669 # These drivers are part of cam(4) subsystem. They supersede less featured
1670 # ata(4) subsystem drivers, supporting same hardware.
1677 # The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
1678 # PC Card devices. You only need one "device ata" for it to find all
1679 # PCI and PC Card ATA/ATAPI devices on modern machines.
1680 # Alternatively, individual bus and chipset drivers may be chosen by using
1681 # the 'atacore' driver then selecting the drivers on a per vendor basis.
1682 # For example to build a system which only supports a VIA chipset,
1683 # omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
1687 #device atacore # Core ATA functionality
1688 #device atapccard # CARDBUS support
1689 #device ataisa # ISA bus support
1690 #device atapci # PCI bus support; only generic chipset support
1693 #device ataacard # ACARD
1694 #device ataacerlabs # Acer Labs Inc. (ALI)
1695 #device ataamd # American Micro Devices (AMD)
1696 #device ataati # ATI
1697 #device atacenatek # Cenatek
1698 #device atacypress # Cypress
1699 #device atacyrix # Cyrix
1700 #device atahighpoint # HighPoint
1701 #device ataintel # Intel
1702 #device ataite # Integrated Technology Inc. (ITE)
1703 #device atajmicron # JMicron
1704 #device atamarvell # Marvell
1705 #device atamicron # Micron
1706 #device atanational # National
1707 #device atanetcell # NetCell
1708 #device atanvidia # nVidia
1709 #device atapromise # Promise
1710 #device ataserverworks # ServerWorks
1711 #device atasiliconimage # Silicon Image Inc. (SiI) (formerly CMD)
1712 #device atasis # Silicon Integrated Systems Corp.(SiS)
1713 #device atavia # VIA Technologies Inc.
1716 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1717 envvar hint.ata.0.at="isa"
1718 envvar hint.ata.0.port="0x1f0"
1719 envvar hint.ata.0.irq="14"
1720 envvar hint.ata.1.at="isa"
1721 envvar hint.ata.1.port="0x170"
1722 envvar hint.ata.1.irq="15"
1725 # uart: newbusified driver for serial interfaces. It consolidates the sio(4),
1726 # sab(4) and zs(4) drivers.
1730 # Options for uart(4)
1731 options UART_PPS_ON_CTS # Do time pulse capturing using CTS
1733 options UART_POLL_FREQ # Set polling rate, used when hw has
1734 # no interrupt support (50 Hz default).
1736 # The following hint should only be used for pure ISA devices. It is not
1737 # needed otherwise. Use of hints is strongly discouraged.
1738 envvar hint.uart.0.at="isa"
1740 # The following 3 hints are used when the UART is a system device (i.e., a
1741 # console or debug port), but only on platforms that don't have any other
1742 # means to pass the information to the kernel. The unit number of the hint
1743 # is only used to bundle the hints together. There is no relation to the
1744 # unit number of the probed UART.
1745 envvar hint.uart.0.port="0x3f8"
1746 envvar hint.uart.0.flags="0x10"
1747 envvar hint.uart.0.baud="115200"
1749 # `flags' for serial drivers that support consoles like sio(4) and uart(4):
1750 # 0x10 enable console support for this unit. Other console flags
1751 # (if applicable) are ignored unless this is set. Enabling
1752 # console support does not make the unit the preferred console.
1753 # Boot with -h or set boot_serial=YES in the loader. For sio(4)
1754 # specifically, the 0x20 flag can also be set (see above).
1755 # Currently, at most one unit can have console support; the
1756 # first one (in config file order) with this flag set is
1757 # preferred. Setting this flag for sio0 gives the old behavior.
1758 # 0x80 use this port for serial line gdb support in ddb. Also known
1762 # Options for serial drivers that support consoles:
1763 options BREAK_TO_DEBUGGER # A BREAK/DBG on the console goes to
1764 # ddb, if available.
1766 # Solaris implements a new BREAK which is initiated by a character
1767 # sequence CR ~ ^b which is similar to a familiar pattern used on
1768 # Sun servers by the Remote Console. There are FreeBSD extensions:
1769 # CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
1770 options ALT_BREAK_TO_DEBUGGER
1772 # Serial Communications Controller
1773 # Supports the Freescale/NXP QUad Integrated and Zilog Z8530 multi-channel
1774 # communications controllers.
1777 # PCI Universal Communications driver
1778 # Supports various multi port PCI I/O cards.
1782 # Network interfaces:
1784 # MII bus support is required for many PCI Ethernet NICs,
1785 # namely those which use MII-compliant transceivers or implement
1786 # transceiver control interfaces that operate like an MII. Adding
1787 # "device miibus" to the kernel config pulls in support for the generic
1788 # miibus API, the common support for for bit-bang'ing the MII and all
1789 # of the PHY drivers, including a generic one for PHYs that aren't
1790 # specifically handled by an individual driver. Support for specific
1791 # PHYs may be built by adding "device mii", "device mii_bitbang" if
1792 # needed by the NIC driver and then adding the appropriate PHY driver.
1793 device mii # Minimal MII support
1794 device mii_bitbang # Common module for bit-bang'ing the MII
1795 device miibus # MII support w/ bit-bang'ing and all PHYs
1797 device acphy # Altima Communications AC101
1798 device amphy # AMD AM79c873 / Davicom DM910{1,2}
1799 device atphy # Attansic/Atheros F1
1800 device axphy # Asix Semiconductor AX88x9x
1801 device bmtphy # Broadcom BCM5201/BCM5202 and 3Com 3c905C
1802 device bnxt # Broadcom NetXtreme-C/NetXtreme-E
1803 device brgphy # Broadcom BCM54xx/57xx 1000baseTX
1804 device cgem # Cadence GEM Gigabit Ethernet
1805 device ciphy # Cicada/Vitesse CS/VSC8xxx
1806 device e1000phy # Marvell 88E1000 1000/100/10-BT
1807 device gentbi # Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
1808 device icsphy # ICS ICS1889-1893
1809 device ip1000phy # IC Plus IP1000A/IP1001
1810 device jmphy # JMicron JMP211/JMP202
1811 device lxtphy # Level One LXT-970
1812 device nsgphy # NatSemi DP8361/DP83865/DP83891
1813 device nsphy # NatSemi DP83840A
1814 device nsphyter # NatSemi DP83843/DP83815
1815 device pnaphy # HomePNA
1816 device qsphy # Quality Semiconductor QS6612
1817 device rdcphy # RDC Semiconductor R6040
1818 device rgephy # RealTek 8169S/8110S/8211B/8211C
1819 device rlphy # RealTek 8139
1820 device rlswitch # RealTek 8305
1821 device smcphy # SMSC LAN91C111
1822 device tdkphy # TDK 89Q2120
1823 device truephy # LSI TruePHY
1824 device xmphy # XaQti XMAC II
1826 # an: Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
1827 # PCI and ISA varieties.
1828 # ae: Support for gigabit ethernet adapters based on the Attansic/Atheros
1829 # L2 PCI-Express FastEthernet controllers.
1830 # age: Support for gigabit ethernet adapters based on the Attansic/Atheros
1831 # L1 PCI express gigabit ethernet controllers.
1832 # alc: Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
1833 # ale: Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
1834 # ath: Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
1835 # bce: Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
1837 # bfe: Broadcom BCM4401 Ethernet adapter.
1838 # bge: Support for gigabit ethernet adapters based on the Broadcom
1839 # BCM570x family of controllers, including the 3Com 3c996-T,
1840 # the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1841 # the embedded gigE NICs on Dell PowerEdge 2550 servers.
1842 # bnxt: Broadcom NetXtreme-C and NetXtreme-E PCIe 10/25/50G Ethernet adapters.
1843 # bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
1845 # bwi: Broadcom BCM430* and BCM431* family of wireless adapters.
1846 # bwn: Broadcom BCM43xx family of wireless adapters.
1847 # cas: Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
1848 # cxgb: Chelsio T3 based 1GbE/10GbE PCIe Ethernet adapters.
1849 # cxgbe:Chelsio T4, T5, and T6-based 1/10/25/40/100GbE PCIe Ethernet
1851 # cxgbev: Chelsio T4, T5, and T6-based PCIe Virtual Functions.
1852 # dc: Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1853 # and various workalikes including:
1854 # the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1855 # AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1856 # 82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1857 # and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1858 # replaces the old al, ax, dm, pn and mx drivers. List of brands:
1859 # Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1860 # SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1861 # LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1863 # em: Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1864 # fxp: Intel EtherExpress Pro/100B
1865 # (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
1866 # gem: Apple GMAC/Sun ERI/Sun GEM
1867 # jme: JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
1868 # le: AMD Am7900 LANCE and Am79C9xx PCnet
1869 # lge: Support for PCI gigabit ethernet adapters based on the Level 1
1870 # LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1871 # SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1872 # lio: Support for Cavium 23XX Ethernet adapters
1873 # malo: Marvell Libertas wireless NICs.
1874 # mwl: Marvell 88W8363 802.11n wireless NICs.
1875 # Requires the mwl firmware module
1876 # mwlfw: Marvell 88W8363 firmware
1877 # msk: Support for gigabit ethernet adapters based on the Marvell/SysKonnect
1878 # Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
1879 # 88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
1880 # 88E8055, 88E8056 and D-Link 560T/550SX.
1881 # mlxfw: Mellanox firmware update module.
1882 # mlx5: Mellanox ConnectX-4 and ConnectX-4 LX IB and Eth shared code module.
1883 # mlx5en:Mellanox ConnectX-4 and ConnectX-4 LX PCIe Ethernet adapters.
1884 # my: Myson Fast Ethernet (MTD80X, MTD89X)
1885 # nge: Support for PCI gigabit ethernet adapters based on the National
1886 # Semiconductor DP83820 and DP83821 chipset. This includes the
1887 # SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
1888 # GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
1889 # EP-320G-TX and the Netgear GA622T.
1890 # oce: Emulex 10 Gbit adapters (OneConnect Ethernet)
1891 # ral: Ralink Technology IEEE 802.11 wireless adapter
1892 # re: RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
1893 # rl: Support for PCI fast ethernet adapters based on the RealTek 8129/8139
1894 # chipset. Note that the RealTek driver defaults to using programmed
1895 # I/O to do register accesses because memory mapped mode seems to cause
1896 # severe lockups on SMP hardware. This driver also supports the
1897 # Accton EN1207D `Cheetah' adapter, which uses a chip called
1898 # the MPX 5030/5038, which is either a RealTek in disguise or a
1899 # RealTek workalike. Note that the D-Link DFE-530TX+ uses the RealTek
1900 # chipset and is supported by this driver, not the 'vr' driver.
1901 # rtwn: RealTek wireless adapters.
1902 # rtwnfw: RealTek wireless firmware.
1903 # sge: Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
1904 # sis: Support for NICs based on the Silicon Integrated Systems SiS 900,
1905 # SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
1906 # sk: Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
1907 # This includes the SK-9841 and SK-9842 single port cards (single mode
1908 # and multimode fiber) and the SK-9843 and SK-9844 dual port cards
1909 # (also single mode and multimode).
1910 # The driver will autodetect the number of ports on the card and
1911 # attach each one as a separate network interface.
1912 # ste: Sundance Technologies ST201 PCI fast ethernet controller, includes
1913 # the D-Link DFE-550TX.
1914 # stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
1915 # TC9021 family of controllers, including the Sundance ST2021/ST2023,
1916 # the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
1917 # ti: Support for PCI gigabit ethernet NICs based on the Alteon Networks
1918 # Tigon 1 and Tigon 2 chipsets. This includes the Alteon AceNIC, the
1919 # 3Com 3c985, the Netgear GA620 and various others. Note that you will
1920 # probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
1921 # vr: Support for various fast ethernet adapters based on the VIA
1922 # Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
1923 # including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
1924 # DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
1925 # vte: DM&P Vortex86 RDC R6040 Fast Ethernet
1926 # xl: Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
1927 # Etherlink XL cards and integrated controllers. This includes the
1928 # integrated 3c905B-TX chips in certain Dell Optiplex and Dell
1929 # Precision desktop machines and the integrated 3c905-TX chips
1930 # in Dell Latitude laptop docking stations.
1931 # Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
1933 # Order for ISA devices is important here
1937 # PCI Ethernet NICs that use the common MII bus controller code.
1938 device ae # Attansic/Atheros L2 FastEthernet
1939 device age # Attansic/Atheros L1 Gigabit Ethernet
1940 device alc # Atheros AR8131/AR8132 Ethernet
1941 device ale # Atheros AR8121/AR8113/AR8114 Ethernet
1942 device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet
1943 device bfe # Broadcom BCM440x 10/100 Ethernet
1944 device bge # Broadcom BCM570xx Gigabit Ethernet
1945 device cas # Sun Cassini/Cassini+ and NS DP83065 Saturn
1946 device dc # DEC/Intel 21143 and various workalikes
1947 device et # Agere ET1310 10/100/Gigabit Ethernet
1948 device fxp # Intel EtherExpress PRO/100B (82557, 82558)
1949 envvar hint.fxp.0.prefer_iomap="0"
1950 device gem # Apple GMAC/Sun ERI/Sun GEM
1951 device jme # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
1952 device lge # Level 1 LXT1001 gigabit Ethernet
1953 device mlxfw # Mellanox firmware update module
1954 device mlx5 # Shared code module between IB and Ethernet
1955 device mlx5en # Mellanox ConnectX-4 and ConnectX-4 LX
1956 device msk # Marvell/SysKonnect Yukon II Gigabit Ethernet
1957 device my # Myson Fast Ethernet (MTD80X, MTD89X)
1958 device nge # NatSemi DP83820 gigabit Ethernet
1959 device re # RealTek 8139C+/8169/8169S/8110S
1960 device rl # RealTek 8129/8139
1961 device sge # Silicon Integrated Systems SiS190/191
1962 device sis # Silicon Integrated Systems SiS 900/SiS 7016
1963 device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
1964 device ste # Sundance ST201 (D-Link DFE-550TX)
1965 device stge # Sundance/Tamarack TC9021 gigabit Ethernet
1966 device vr # VIA Rhine, Rhine II
1967 device vte # DM&P Vortex86 RDC R6040 Fast Ethernet
1968 device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
1970 # PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
1972 device em # Intel Pro/1000 Gigabit Ethernet
1973 device ix # Intel Pro/10Gbe PCIE Ethernet
1974 device ixv # Intel Pro/10Gbe PCIE Ethernet VF
1976 # PCI Ethernet NICs.
1977 device cxgb # Chelsio T3 10 Gigabit Ethernet
1978 device cxgb_t3fw # Chelsio T3 10 Gigabit Ethernet firmware
1979 device cxgbe # Chelsio T4-T6 1/10/25/40/100 Gigabit Ethernet
1980 device cxgbev # Chelsio T4-T6 Virtual Functions
1981 device le # AMD Am7900 LANCE and Am79C9xx PCnet
1982 device mxge # Myricom Myri-10G 10GbE NIC
1983 device oce # Emulex 10 GbE (OneConnect Ethernet)
1984 device ti # Alteon Networks Tigon I/II gigabit Ethernet
1986 # PCI IEEE 802.11 Wireless NICs
1987 device ath # Atheros pci/cardbus NIC's
1988 device ath_hal # pci/cardbus chip support
1989 #device ath_ar5210 # AR5210 chips
1990 #device ath_ar5211 # AR5211 chips
1991 #device ath_ar5212 # AR5212 chips
1998 #device ath_ar5416 # AR5416 chips
1999 # All of the AR5212 parts have a problem when paired with the AR71xx
2000 # CPUS. These parts have a bug that triggers a fatal bus error on the AR71xx
2001 # only. Details of the exact nature of the bug are sketchy, but some can be
2002 # found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
2003 # 6. This option enables this workaround. There is a performance penalty
2004 # for this work around, but without it things don't work at all. The DMA
2005 # from the card usually bursts 128 bytes, but on the affected CPUs, only
2007 options AH_RXCFG_SDMAMW_4BYTES
2008 #device ath_ar9160 # AR9160 chips
2009 #device ath_ar9280 # AR9280 chips
2010 #device ath_ar9285 # AR9285 chips
2011 device ath_rate_sample # SampleRate tx rate control for ath
2012 device bwi # Broadcom BCM430* BCM431*
2013 device bwn # Broadcom BCM43xx
2014 device malo # Marvell Libertas wireless NICs.
2015 device mwl # Marvell 88W8363 802.11n wireless NICs.
2017 device ral # Ralink Technology RT2500 wireless NICs.
2018 device rtwn # Realtek wireless NICs
2021 # Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
2022 #options TI_SF_BUF_JUMBO
2023 # Turn on the header splitting option for the ti(4) driver firmware. This
2024 # only works for Tigon II chips, and has no effect for Tigon I chips.
2025 # This option requires the TI_SF_BUF_JUMBO option above.
2026 #options TI_JUMBO_HDRSPLIT
2028 # These two options allow manipulating the mbuf cluster size and mbuf size,
2029 # respectively. Be very careful with NIC driver modules when changing
2030 # these from their default values, because that can potentially cause a
2031 # mismatch between the mbuf size assumed by the kernel and the mbuf size
2032 # assumed by a module. The only driver that currently has the ability to
2033 # detect a mismatch is ti(4).
2034 options MCLSHIFT=12 # mbuf cluster shift in bits, 12 == 4KB
2035 options MSIZE=512 # mbuf size in bytes
2040 # sound: The generic sound driver.
2046 # snd_*: Device-specific drivers.
2048 # The flags of the device tell the device a bit more info about the
2049 # device that normally is obtained through the PnP interface.
2050 # bit 2..0 secondary DMA channel;
2051 # bit 4 set if the board uses two dma channels;
2052 # bit 15..8 board type, overrides autodetection; leave it
2053 # zero if don't know what to put in (and you don't,
2054 # since this is unsupported at the moment...).
2056 # snd_ad1816: Analog Devices AD1816 ISA PnP/non-PnP.
2057 # snd_als4000: Avance Logic ALS4000 PCI.
2058 # snd_atiixp: ATI IXP 200/300/400 PCI.
2059 # snd_cmi: CMedia CMI8338/CMI8738 PCI.
2060 # snd_cs4281: Crystal Semiconductor CS4281 PCI.
2061 # snd_csa: Crystal Semiconductor CS461x/428x PCI. (except
2063 # snd_ds1: Yamaha DS-1 PCI.
2064 # snd_emu10k1: Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
2065 # snd_emu10kx: Creative SoundBlaster Live! and Audigy
2066 # snd_envy24: VIA Envy24 and compatible, needs snd_spicds.
2067 # snd_envy24ht: VIA Envy24HT and compatible, needs snd_spicds.
2068 # snd_es137x: Ensoniq AudioPCI ES137x PCI.
2069 # snd_ess: Ensoniq ESS ISA PnP/non-PnP, to be used in
2070 # conjunction with snd_sbc.
2071 # snd_fm801: Forte Media FM801 PCI.
2072 # snd_gusc: Gravis UltraSound ISA PnP/non-PnP.
2073 # snd_hda: Intel High Definition Audio (Controller) and
2075 # snd_hdspe: RME HDSPe AIO and RayDAT.
2076 # snd_ich: Intel ICH AC'97 and some more audio controllers
2077 # embedded in a chipset, for example nVidia
2078 # nForce controllers.
2079 # snd_maestro: ESS Technology Maestro-1/2x PCI.
2080 # snd_maestro3: ESS Technology Maestro-3/Allegro PCI.
2081 # snd_mss: Microsoft Sound System ISA PnP/non-PnP.
2082 # snd_neomagic: Neomagic 256 AV/ZX PCI.
2083 # snd_sb16: Creative SoundBlaster16, to be used in
2084 # conjunction with snd_sbc.
2085 # snd_sb8: Creative SoundBlaster (pre-16), to be used in
2086 # conjunction with snd_sbc.
2087 # snd_sbc: Creative SoundBlaster ISA PnP/non-PnP.
2088 # Supports ESS and Avance ISA chips as well.
2089 # snd_solo: ESS Solo-1x PCI.
2090 # snd_spicds: SPI codec driver, needed by Envy24/Envy24HT drivers.
2091 # snd_t4dwave: Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
2093 # snd_uaudio: USB audio.
2094 # snd_via8233: VIA VT8233x PCI.
2095 # snd_via82c686: VIA VT82C686A PCI.
2096 # snd_vibes: S3 Sonicvibes PCI.
2128 device snd_via82c686
2131 # For non-PnP sound cards:
2132 envvar hint.pcm.0.at="isa"
2133 envvar hint.pcm.0.irq="10"
2134 envvar hint.pcm.0.drq="1"
2135 envvar hint.pcm.0.flags="0x0"
2136 envvar hint.sbc.0.at="isa"
2137 envvar hint.sbc.0.port="0x220"
2138 envvar hint.sbc.0.irq="5"
2139 envvar hint.sbc.0.drq="1"
2140 envvar hint.sbc.0.flags="0x15"
2141 envvar hint.gusc.0.at="isa"
2142 envvar hint.gusc.0.port="0x220"
2143 envvar hint.gusc.0.irq="5"
2144 envvar hint.gusc.0.drq="1"
2145 envvar hint.gusc.0.flags="0x13"
2148 # Following options are intended for debugging/testing purposes:
2150 # SND_DEBUG Enable extra debugging code that includes
2151 # sanity checking and possible increase of
2154 # SND_DIAGNOSTIC Similar in a spirit of INVARIANTS/DIAGNOSTIC,
2155 # zero tolerance against inconsistencies.
2157 # SND_FEEDER_MULTIFORMAT By default, only 16/32 bit feeders are compiled
2158 # in. This options enable most feeder converters
2159 # except for 8bit. WARNING: May bloat the kernel.
2161 # SND_FEEDER_FULL_MULTIFORMAT Ditto, but includes 8bit feeders as well.
2163 # SND_FEEDER_RATE_HP (feeder_rate) High precision 64bit arithmetic
2164 # as much as possible (the default trying to
2165 # avoid it). Possible slowdown.
2167 # SND_PCM_64 (Only applicable for i386/32bit arch)
2168 # Process 32bit samples through 64bit
2169 # integer/arithmetic. Slight increase of dynamic
2170 # range at a cost of possible slowdown.
2172 # SND_OLDSTEREO Only 2 channels are allowed, effectively
2173 # disabling multichannel processing.
2176 options SND_DIAGNOSTIC
2177 options SND_FEEDER_MULTIFORMAT
2178 options SND_FEEDER_FULL_MULTIFORMAT
2179 options SND_FEEDER_RATE_HP
2181 options SND_OLDSTEREO
2184 # PC Card/PCMCIA and Cardbus
2186 # cbb: pci/cardbus bridge implementing YENTA interface
2187 # pccard: pccard slots
2188 # cardbus: cardbus slots
2197 # mmcsd MMC/SD memory card
2198 # sdhci Generic PCI SD Host Controller
2199 # rtsx Realtek SD card reader (RTS5209, RTS5227, ...)
2208 # System Management Bus support is provided by the 'smbus' device.
2209 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
2210 # which is a child of the 'smbus' device.
2212 # Supported devices:
2213 # smb standard I/O through /dev/smb*
2215 # Supported SMB interfaces:
2216 # iicsmb I2C to SMB bridge with any iicbus interface
2217 # intpm Intel PIIX4 (82371AB, 82443MX) Power Management Unit
2218 # alpm Acer Aladdin-IV/V/Pro2 Power Management Unit
2219 # ichsmb Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
2220 # viapm VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2221 # amdpm AMD 756 Power Management Unit
2222 # amdsmb AMD 8111 SMBus 2.0 Controller
2223 # nfpm NVIDIA nForce Power Management Unit
2224 # nfsmb NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
2225 # ismt Intel SMBus 2.0 controller chips (on Atom S1200, C2000)
2227 device smbus # Bus support, required for smb below.
2241 # SMBus peripheral devices
2243 # jedec_dimm Asset and temperature reporting for DDR3 and DDR4 DIMMs
2249 # Philips i2c bus support is provided by the `iicbus' device.
2251 # Supported devices:
2252 # ic i2c network interface
2253 # iic i2c standard io
2254 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
2255 # iicoc simple polling driver for OpenCores I2C controller
2258 # iicbb generic I2C bit-banging code (needed by lpbb)
2260 device iicbus # Bus support, required for ic/iic/iicsmb below.
2261 device iicbb # bitbang driver; implements i2c on a pair of gpio pins
2264 device iic # userland access to i2c slave devices via ioctl(8)
2265 device iicsmb # smb over i2c bridge
2266 device iicoc # OpenCores I2C controller support
2268 # I2C bus multiplexer (mux) devices
2269 device iicmux # i2c mux core driver
2270 device iic_gpiomux # i2c mux hardware controlled via gpio pins
2271 device ltc430x # LTC4305 and LTC4306 i2c mux chips
2273 # I2C peripheral devices
2275 device ad7418 # Analog Devices temp and voltage sensor
2276 device ads111x # Texas Instruments ADS101x and ADS111x ADCs
2277 device ds1307 # Dallas DS1307 RTC and compatible
2278 device ds13rtc # All Dallas/Maxim ds13xx chips
2279 device ds1672 # Dallas DS1672 RTC
2280 device ds3231 # Dallas DS3231 RTC + temperature
2281 device icee # AT24Cxxx and compatible EEPROMs
2282 device isl12xx # Intersil ISL12xx RTC
2283 device lm75 # LM75 compatible temperature sensor
2284 device nxprtc # NXP RTCs: PCA/PFC212x PCA/PCF85xx
2285 device rtc8583 # Epson RTC-8583
2286 device s35390a # Seiko Instruments S-35390A RTC
2287 device sy8106a # Silergy Corp. SY8106A buck regulator
2288 device syr827 # Silergy Corp. DC/DC regulator
2292 # Parallel port bus support is provided by the `ppbus' device.
2293 # Multiple devices may be attached to the parallel port, devices
2294 # are automatically probed and attached when found.
2296 # Supported devices:
2297 # lpt Parallel Printer
2298 # plip Parallel network interface
2299 # ppi General-purpose I/O ("Geek Port") + IEEE1284 I/O
2300 # pps Pulse per second Timing Interface
2301 # lpbb Philips official parallel port I2C bit-banging interface
2302 # pcfclock Parallel port clock driver.
2304 # Supported interfaces:
2305 # ppc ISA-bus parallel port interfaces.
2308 options PPC_PROBE_CHIPSET # Enable chipset specific detection
2309 # (see flags in ppc(4))
2310 options DEBUG_1284 # IEEE1284 signaling protocol debug
2311 options PERIPH_1284 # Makes your computer act as an IEEE1284
2312 # compliant peripheral
2313 options DONTPROBE_1284 # Avoid boot detection of PnP parallel devices
2314 options LPT_DEBUG # Printer driver debug
2315 options PPC_DEBUG # Parallel chipset level debug
2316 options PLIP_DEBUG # Parallel network IP interface debug
2317 options PCFCLOCK_VERBOSE # Verbose pcfclock driver
2318 options PCFCLOCK_MAX_RETRIES=5 # Maximum read tries (default 10)
2321 envvar hint.ppc.0.at="isa"
2322 envvar hint.ppc.0.irq="7"
2331 # General Purpose I/O pins
2332 device dwgpio # Synopsys DesignWare APB GPIO Controller
2333 device gpio # gpio interfaces and bus support
2334 device gpiobacklight # sysctl control of gpio-based backlight
2335 device gpioiic # i2c via gpio bitbang
2336 device gpiokeys # kbd(4) glue for gpio-based key input
2337 device gpioled # led(4) gpio glue
2338 device gpiopower # event handler for gpio-based powerdown
2339 device gpiopps # Pulse per second input from gpio pin
2340 device gpioregulator # extres/regulator glue for gpio pin
2341 device gpiospi # SPI via gpio bitbang
2342 device gpioths # 1-wire temp/humidity sensor on gpio pin
2344 # Pulse width modulation
2345 device pwmbus # pwm interface and bus support
2346 device pwmc # userland control access to pwm outputs
2349 # Etherswitch framework and drivers
2351 # etherswitch The etherswitch(4) framework
2352 # miiproxy Proxy device for miibus(4) functionality
2354 # Switch hardware support:
2355 # arswitch Atheros switches
2356 # ip17x IC+ 17x family switches
2357 # rtl8366r Realtek RTL8366 switches
2358 # ukswitch Multi-PHY switches
2367 # Kernel BOOTP support
2369 options BOOTP # Use BOOTP to obtain IP address/hostname
2370 # Requires NFSCL and NFS_ROOT
2371 options BOOTP_NFSROOT # NFS mount root filesystem using BOOTP info
2372 options BOOTP_NFSV3 # Use NFS v3 to NFS mount root
2373 options BOOTP_COMPAT # Workaround for broken bootp daemons.
2374 options BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2375 options BOOTP_BLOCKSIZE=8192 # Override NFS block size
2378 # Enable software watchdog routines, even if hardware watchdog is present.
2379 # By default, software watchdog timer is enabled only if no hardware watchdog
2385 # Add the software deadlock resolver thread.
2390 # Disable swapping of stack pages. This option removes all
2391 # code which actually performs swapping, so it's not possible to turn
2392 # it back on at run-time.
2394 # This is sometimes usable for systems which don't have any swap space
2395 # (see also sysctl "vm.disable_swapspace_pageouts")
2397 #options NO_SWAPPING
2399 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
2400 # for sendfile(2) that are used to map file VM pages, and normally
2401 # default to a quantity that is roughly 16*MAXUSERS+512. You would
2402 # typically want about 4 of these for each simultaneous file send.
2404 options NSFBUFS=1024
2407 # Enable extra debugging code for locks. This stores the filename and
2408 # line of whatever acquired the lock in the lock itself, and changes a
2409 # number of function calls to pass around the relevant data. This is
2410 # not at all useful unless you are debugging lock code. Note that
2411 # modules should be recompiled as this option modifies KBI.
2415 #####################################################################
2417 device hid # Generic HID support
2418 options HID_DEBUG # enable debug msgs
2419 device hidbus # HID bus
2420 device hidmap # HID to evdev mapping
2421 device hidraw # Raw access driver
2422 options HIDRAW_MAKE_UHID_ALIAS # install /dev/uhid alias
2423 device hconf # Multitouch configuration TLC
2424 device hcons # Consumer controls
2425 device hgame # Generic game controllers
2426 device hkbd # HID keyboard
2427 device hms # HID mouse
2428 device hmt # HID multitouch (MS-compatible)
2429 device hpen # Generic pen driver
2430 device hsctrl # System controls
2431 device ps4dshock # Sony PS4 DualShock 4 gamepad driver
2432 device xb360gp # XBox 360 gamepad driver
2434 #####################################################################
2446 # General USB code (mandatory for USB)
2449 # USB Double Bulk Pipe devices
2451 # USB temperature meter
2455 # Human Interface Device (anything with buttons and dials)
2461 # USB mass storage driver (Requires scbus and da)
2463 # USB mass storage driver for device-side mode
2465 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
2474 # eGalax USB touch screen
2476 # Diamond Rio 500 MP3 player
2478 # HID-over-USB driver
2482 # USB serial support
2484 # USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
2486 # USB support for Technologies ARK3116 based serial adapters
2488 # USB support for Belkin F5U103 and compatible serial adapters
2490 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
2492 # USB support for some Windows CE based serial communication.
2494 # USB support for Prolific PL-2303 serial adapters
2496 # USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
2498 # USB Visor and Palm devices
2500 # USB serial support for DDI pocket's PHS
2503 # USB ethernet support
2505 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
2506 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2507 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2511 # ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2512 # LinkSys USB200M and various other adapters.
2514 # ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
2518 # Devices which communicate using Ethernet over USB, particularly
2519 # Communication Device Class (CDC) Ethernet specification. Supports
2520 # Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
2523 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
2524 # and Netmate II, and the Belkin F5U111.
2527 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2528 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2529 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
2530 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
2531 # and 2104USB, and the Corega USB-T.
2534 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
2535 # and the GREEN HOUSE GH-USB100B.
2538 # Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2541 # RealTek RTL8152/RTL8153 USB Ethernet driver
2544 # Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
2547 # HSxPA devices from Option N.V
2550 # Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
2553 # Ralink Technology RT2501USB/RT2601USB wireless driver
2555 # Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
2558 # Atheros AR5523 wireless driver
2561 # Conexant/Intersil PrismGT wireless driver
2564 # Ralink Technology RT2500USB wireless driver
2567 # RNDIS USB ethernet driver
2569 # Realtek RTL8187B/L wireless driver
2572 # ZyDas ZD1211/ZD1211B wireless driver
2575 # Sierra USB wireless driver
2579 # debugging options for the USB subsystem
2585 options UKBD_DFLT_KEYMAP # specify the built-in keymap
2586 makeoptions UKBD_DFLT_KEYMAP=jp.106
2588 # options for uplcom:
2589 options UPLCOM_INTR_INTERVAL=100 # interrupt pipe interval
2592 # options for uvscom:
2593 options UVSCOM_DEFAULT_OPKTSIZE=8 # default output packet size
2594 options UVSCOM_INTR_INTERVAL=100 # interrupt pipe interval
2597 #####################################################################
2600 device firewire # FireWire bus code
2601 device sbp # SCSI over Firewire (Requires scbus and da)
2602 device sbp_targ # SBP-2 Target mode (Requires scbus and targ)
2603 device fwe # Ethernet over FireWire (non-standard!)
2604 device fwip # IP over FireWire (RFC2734 and RFC3146)
2606 #####################################################################
2607 # dcons support (Dumb Console Device)
2609 device dcons # dumb console driver
2610 device dcons_crom # FireWire attachment
2611 options DCONS_BUF_SIZE=16384 # buffer size
2612 options DCONS_POLL_HZ=100 # polling rate
2613 options DCONS_FORCE_CONSOLE=0 # force to be the primary console
2614 options DCONS_FORCE_GDB=1 # force to be the gdb device
2616 #####################################################################
2619 # This is a port of the OpenBSD crypto framework. Include this when
2620 # configuring IPSEC and when you have a h/w crypto device to accelerate
2621 # user applications that link to OpenSSL.
2623 # Drivers are ports from OpenBSD with some simple enhancements that have
2624 # been fed back to OpenBSD.
2626 device crypto # core crypto support
2628 # Only install the cryptodev device if you are running tests, or know
2629 # specifically why you need it. In most cases, it is not needed and
2630 # will make things slower.
2631 device cryptodev # /dev/crypto for access to h/w
2633 device rndtest # FIPS 140-2 entropy tester
2635 device ccr # Chelsio T6
2637 device hifn # Hifn 7951, 7781, etc.
2638 options HIFN_DEBUG # enable debugging support: hw.hifn.debug
2639 options HIFN_RNDTEST # enable rndtest support
2641 #####################################################################
2645 # Embedded system options:
2647 # An embedded system might want to run something other than init.
2648 options INIT_PATH=/sbin/init:/rescue/init
2651 options BUS_DEBUG # enable newbus debugging
2652 options DEBUG_VFS_LOCKS # enable VFS lock debugging
2653 options SOCKBUF_DEBUG # enable sockbuf last record/mb tail checking
2654 options IFMEDIA_DEBUG # enable debugging in net/if_media.c
2659 # Make the SYSINIT process performed by mi_startup() verbose. This is very
2660 # useful when porting to a new architecture. If DDB is also enabled, this
2661 # will print function names instead of addresses. If defined with a value
2662 # of zero, the verbose code is compiled-in but disabled by default, and can
2663 # be enabled with the debug.verbose_sysinit=1 tunable.
2664 options VERBOSE_SYSINIT
2666 #####################################################################
2667 # SYSV IPC KERNEL PARAMETERS
2669 # Maximum number of System V semaphores that can be used on the system at
2673 # Total number of semaphores system wide
2676 # Total number of undo structures in system
2679 # Maximum number of System V semaphores that can be used by a single process
2683 # Maximum number of operations that can be outstanding on a single System V
2684 # semaphore at one time.
2687 # Maximum number of undo operations that can be outstanding on a single
2688 # System V semaphore at one time.
2691 # Maximum number of shared memory pages system wide.
2694 # Maximum size, in bytes, of a single System V shared memory region.
2695 options SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2696 options SHMMAXPGS=1025
2698 # Minimum size, in bytes, of a single System V shared memory region.
2701 # Maximum number of shared memory regions that can be used on the system
2705 # Maximum number of System V shared memory regions that can be attached to
2706 # a single process at one time.
2709 # Set the amount of time (in seconds) the system will wait before
2710 # rebooting automatically when a kernel panic occurs. If set to (-1),
2711 # the system will wait indefinitely until a key is pressed on the
2713 options PANIC_REBOOT_WAIT_TIME=16
2715 # Attempt to bypass the buffer cache and put data directly into the
2716 # userland buffer for read operation when O_DIRECT flag is set on the
2717 # file. Both offset and length of the read operation must be
2718 # multiples of the physical media sector size.
2722 # Specify a lower limit for the number of swap I/O buffers. They are
2723 # (among other things) used when bypassing the buffer cache due to
2724 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
2726 options NSWBUF_MIN=120
2728 #####################################################################
2730 # More undocumented options for linting.
2731 # Note that documenting these is not considered an affront.
2733 options CAM_DEBUG_DELAY
2737 # Kernel filelock debugging.
2740 # System V compatible message queues
2741 # Please note that the values provided here are used to test kernel
2742 # building. The defaults in the sources provide almost the same numbers.
2743 # MSGSSZ must be a power of 2 between 8 and 1024.
2744 options MSGMNB=2049 # Max number of chars in queue
2745 options MSGMNI=41 # Max number of message queue identifiers
2746 options MSGSEG=2049 # Max number of message segments
2747 options MSGSSZ=16 # Size of a message segment
2748 options MSGTQL=41 # Max number of messages in system
2750 options NBUF=512 # Number of buffer headers
2752 options SC_DEBUG_LEVEL=5 # Syscons debug level
2753 options SC_RENDER_DEBUG # syscons rendering debugging
2755 options VFS_BIO_DEBUG # VFS buffer I/O debugging
2757 options KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
2758 options KSTACK_USAGE_PROF
2760 # Adaptec Array Controller driver options
2761 options AAC_DEBUG # Debugging levels:
2762 # 0 - quiet, only emit warnings
2763 # 1 - noisy, emit major function
2764 # points and things done
2765 # 2 - extremely noisy, emit trace
2766 # items in loops, etc.
2768 # Resource Accounting
2774 # Yet more undocumented options for linting.
2775 options MAXFILES=999
2777 # Random number generator
2778 # Alternative algorithm.
2779 #options RANDOM_FENESTRASX
2780 # Allow the CSPRNG algorithm to be loaded as a module.
2781 #options RANDOM_LOADABLE
2782 # Select this to allow high-rate but potentially expensive
2783 # harvesting of Slab-Allocator entropy. In very high-rate
2784 # situations the value of doing this is dubious at best.
2785 options RANDOM_ENABLE_UMA # slab allocator
2787 # Select this to allow high-rate but potentially expensive
2788 # harvesting of of the m_next pointer in the mbuf. Note that
2789 # the m_next pointer is NULL except when receiving > 4K
2790 # jumbo frames or sustained bursts by way of LRO. Thus in
2791 # the common case it is stirring zero in to the entropy
2792 # pool. In cases where it is not NULL it is pointing to one
2793 # of a small (in the thousands to 10s of thousands) number
2794 # of 256 byte aligned mbufs. Hence it is, even in the best
2795 # case, a poor source of entropy. And in the absence of actual
2796 # runtime analysis of entropy collection may mislead the user in
2797 # to believe that substantially more entropy is being collected
2798 # than in fact is - leading to a different class of security
2799 # risk. In high packet rate situations ethernet entropy
2800 # collection is also very expensive, possibly leading to as
2801 # much as a 50% drop in packets received.
2802 # This option is present to maintain backwards compatibility
2803 # if desired, however it cannot be recommended for use in any
2805 options RANDOM_ENABLE_ETHER # ether_input
2807 # Module to enable execution of application via emulators like QEMU
2808 options IMAGACT_BINMISC
2810 # zlib I/O stream support
2811 # This enables support for compressed core dumps.
2815 # This enables support for Zstd compressed core dumps, GEOM_UZIP images,
2816 # and is required by zfs if statically linked.
2820 options BHND_LOGLEVEL # Logging threshold level
2823 device evdev # input event device support
2824 options EVDEV_SUPPORT # evdev support in legacy drivers
2825 options EVDEV_DEBUG # enable event debug msgs
2826 device uinput # install /dev/uinput cdev
2827 options UINPUT_DEBUG # enable uinput debug msgs
2829 # Encrypted kernel crash dumps.
2832 # Serial Peripheral Interface (SPI) support.
2833 device spibus # Bus support.
2834 device at45d # DataFlash driver
2836 device mx25l # SPIFlash driver
2838 device spigen # Generic access to SPI devices from userland.
2839 # Enable legacy /dev/spigenN name aliases for /dev/spigenX.Y devices.
2840 options SPIGEN_LEGACY_CDEVNAME # legacy device names for spigen
2842 # Compression supports.
2843 device zlib # gzip/zlib compression/decompression library
2844 device xz # xz_embedded LZMA de-compression library
2846 # Kernel support for stats(3).