2 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
4 # Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
5 # 'makeoptions', 'hints', etc. go into the kernel configuration that you
8 # Lines that begin with 'envvar hint.' should go into your hints file.
9 # See /boot/device.hints and/or the 'hints' config(8) directive.
11 # Please use ``make LINT'' to create an old-style LINT file if you want to
12 # do kernel test-builds.
14 # This file contains machine independent kernel configuration notes. For
15 # machine dependent notes, look in /sys/<arch>/conf/NOTES.
19 # NOTES conventions and style guide:
21 # Large block comments should begin and end with a line containing only a
24 # To describe a particular object, a block comment (if it exists) should
25 # come first. Next should come device, options, and hints lines in that
26 # order. All device and option lines must be described by a comment that
27 # doesn't just expand the device or option name. Use only a concise
28 # comment on the same line if possible. Very detailed descriptions of
29 # devices and subsystems belong in man pages.
31 # A space followed by a tab separates 'options' from an option name. Two
32 # spaces followed by a tab separate 'device' from a device name. Comments
33 # after an option or device should use one space after the comment character.
34 # To comment out a negative option that disables code and thus should not be
35 # enabled for LINT builds, precede 'options' with "#!".
39 # This is the ``identification'' of the kernel. Usually this should
40 # be the same as the name of your kernel.
45 # The `maxusers' parameter controls the static sizing of a number of
46 # internal system tables by a formula defined in subr_param.c.
47 # Omitting this parameter or setting it to 0 will cause the system to
48 # auto-size based on physical memory.
52 # To statically compile in device wiring instead of /boot/device.hints
53 #hints "LINT.hints" # Default places to look for devices.
55 # Use the following to compile in values accessible to the kernel
56 # through getenv() (or kenv(1) in userland). The format of the file
57 # is 'variable=value', see kenv(1)
62 # The `makeoptions' parameter allows variables to be passed to the
63 # generated Makefile in the build area.
65 # CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
66 # after most other flags. Here we use it to inhibit use of non-optimal
67 # gcc built-in functions (e.g., memcmp).
69 # DEBUG happens to be magic.
70 # The following is equivalent to 'config -g KERNELNAME' and creates
71 # 'kernel.debug' compiled with -g debugging as well as a normal
72 # 'kernel'. Use 'make install.debug' to install the debug kernel
73 # but that isn't normally necessary as the debug symbols are not loaded
74 # by the kernel and are not useful there anyway.
76 # KERNEL can be overridden so that you can change the default name of your
79 # MODULES_OVERRIDE can be used to limit modules built to a specific list.
81 makeoptions CONF_CFLAGS=-fno-builtin #Don't allow use of memcmp, etc.
82 #makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
83 #makeoptions KERNEL=foo #Build kernel "foo" and install "/foo"
84 # Only build ext2fs module plus those parts of the sound system I need.
85 #makeoptions MODULES_OVERRIDE="ext2fs sound/sound sound/driver/maestro3"
86 makeoptions DESTDIR=/tmp
89 # FreeBSD processes are subject to certain limits to their consumption
90 # of system resources. See getrlimit(2) for more details. Each
91 # resource limit has two values, a "soft" limit and a "hard" limit.
92 # The soft limits can be modified during normal system operation, but
93 # the hard limits are set at boot time. Their default values are
94 # in sys/<arch>/include/vmparam.h. There are two ways to change them:
96 # 1. Set the values at kernel build time. The options below are one
97 # way to allow that limit to grow to 1GB. They can be increased
98 # further by changing the parameters:
100 # 2. In /boot/loader.conf, set the tunables kern.maxswzone,
101 # kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
102 # kern.dflssiz, kern.maxssiz and kern.sgrowsiz.
104 # The options in /boot/loader.conf override anything in the kernel
105 # configuration file. See the function init_param1 in
106 # sys/kern/subr_param.c for more details.
109 options MAXDSIZ=(1024UL*1024*1024)
110 options MAXSSIZ=(128UL*1024*1024)
111 options DFLDSIZ=(1024UL*1024*1024)
114 # BLKDEV_IOSIZE sets the default block size used in user block
115 # device I/O. Note that this value will be overridden by the label
116 # when specifying a block device from a label with a non-0
117 # partition blocksize. The default is PAGE_SIZE.
119 options BLKDEV_IOSIZE=8192
122 # MAXPHYS and DFLTPHYS
124 # These are the maximal and safe 'raw' I/O block device access sizes.
125 # Reads and writes will be split into MAXPHYS chunks for known good
126 # devices and DFLTPHYS for the rest. Some applications have better
127 # performance with larger raw I/O access sizes. Note that certain VM
128 # parameters are derived from these values and making them too large
129 # can make an unbootable kernel.
131 # The defaults are 64K and 128K respectively.
132 options DFLTPHYS=(64*1024)
133 options MAXPHYS=(128*1024)
136 # This allows you to actually store this configuration file into
137 # the kernel binary itself. See config(8) for more details.
139 options INCLUDE_CONFIG_FILE # Include this file in kernel
142 # Compile-time defaults for various boot parameters
144 options BOOTVERBOSE=1
145 options BOOTHOWTO=RB_MULTIPLE
148 # Compile-time defaults for dmesg boot tagging
150 # Default boot tag; may use 'kern.boot_tag' loader tunable to override. The
151 # current boot's tag is also exposed via the 'kern.boot_tag' sysctl.
152 options BOOT_TAG=\"\"
153 # Maximum boot tag size the kernel's static buffer should accommodate. Maximum
154 # size for both BOOT_TAG and the assocated tunable.
155 options BOOT_TAG_SZ=32
157 options GEOM_BDE # Disk encryption.
158 options GEOM_CACHE # Disk cache.
159 options GEOM_CONCAT # Disk concatenation.
160 options GEOM_ELI # Disk encryption.
161 options GEOM_GATE # Userland services.
162 options GEOM_JOURNAL # Journaling.
163 options GEOM_LABEL # Providers labelization.
164 options GEOM_LINUX_LVM # Linux LVM2 volumes
165 options GEOM_MAP # Map based partitioning
166 options GEOM_MIRROR # Disk mirroring.
167 options GEOM_MULTIPATH # Disk multipath
168 options GEOM_NOP # Test class.
169 options GEOM_PART_APM # Apple partitioning
170 options GEOM_PART_BSD # BSD disklabel
171 options GEOM_PART_BSD64 # BSD disklabel64
172 options GEOM_PART_EBR # Extended Boot Records
173 options GEOM_PART_GPT # GPT partitioning
174 options GEOM_PART_LDM # Logical Disk Manager
175 options GEOM_PART_MBR # MBR partitioning
176 options GEOM_RAID # Soft RAID functionality.
177 options GEOM_RAID3 # RAID3 functionality.
178 options GEOM_SHSEC # Shared secret.
179 options GEOM_STRIPE # Disk striping.
180 options GEOM_UZIP # Read-only compressed disks
181 options GEOM_VINUM # Vinum logical volume manager
182 options GEOM_VIRSTOR # Virtual storage.
183 options GEOM_ZERO # Performance testing helper.
186 # The root device and filesystem type can be compiled in;
187 # this provides a fallback option if the root device cannot
188 # be correctly guessed by the bootstrap code, or an override if
189 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
191 options ROOTDEVNAME=\"ufs:da0s2e\"
194 #####################################################################
197 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory. These options
198 # select which scheduler is compiled in.
200 # SCHED_4BSD is the historical, proven, BSD scheduler. It has a global run
201 # queue and no CPU affinity which makes it suboptimal for SMP. It has very
202 # good interactivity and priority selection.
204 # SCHED_ULE provides significant performance advantages over 4BSD on many
205 # workloads on SMP machines. It supports cpu-affinity, per-cpu runqueues
206 # and scheduler locks. It also has a stronger notion of interactivity
207 # which leads to better responsiveness even on uniprocessor machines. This
208 # is the default scheduler.
210 # SCHED_STATS is a debugging option which keeps some stats in the sysctl
211 # tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
217 #####################################################################
220 # SMP enables building of a Symmetric MultiProcessor Kernel.
223 options SMP # Symmetric MultiProcessor Kernel
225 # EARLY_AP_STARTUP releases the Application Processors earlier in the
226 # kernel startup process (before devices are probed) rather than at the
227 # end. This is a temporary option for use during the transition from
228 # late to early AP startup.
229 options EARLY_AP_STARTUP
231 # MAXCPU defines the maximum number of CPUs that can boot in the system.
232 # A default value should be already present, for every architecture.
235 # NUMA enables use of Non-Uniform Memory Access policies in various kernel
239 # MAXMEMDOM defines the maximum number of memory domains that can boot in the
240 # system. A default value should already be defined by every architecture.
243 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
244 # if the thread that currently owns the mutex is executing on another
245 # CPU. This behavior is enabled by default, so this option can be used
247 options NO_ADAPTIVE_MUTEXES
249 # ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
250 # if the thread that currently owns the rwlock is executing on another
251 # CPU. This behavior is enabled by default, so this option can be used
253 options NO_ADAPTIVE_RWLOCKS
255 # ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
256 # currently owns the sx lock is executing on another CPU.
257 # This behavior is enabled by default, so this option can be used to
259 options NO_ADAPTIVE_SX
261 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
262 # operation rather than inlining the simple cases. This can be used to
263 # shrink the size of the kernel text segment. Note that this behavior is
264 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
265 # and WITNESS options.
266 options MUTEX_NOINLINE
268 # RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
269 # operation rather than inlining the simple cases. This can be used to
270 # shrink the size of the kernel text segment. Note that this behavior is
271 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
272 # and WITNESS options.
273 options RWLOCK_NOINLINE
275 # SX_NOINLINE forces sx lock operations to call functions to perform each
276 # operation rather than inlining the simple cases. This can be used to
277 # shrink the size of the kernel text segment. Note that this behavior is
278 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
279 # and WITNESS options.
282 # SMP Debugging Options:
284 # CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
285 # structure used as backend in callout(9).
286 # PREEMPTION allows the threads that are in the kernel to be preempted by
287 # higher priority [interrupt] threads. It helps with interactivity
288 # and allows interrupt threads to run sooner rather than waiting.
289 # FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
290 # threads. Its sole use is to expose race conditions and other
291 # bugs during development. Enabling this option will reduce
292 # performance and increase the frequency of kernel panics by
293 # design. If you aren't sure that you need it then you don't.
294 # Relies on the PREEMPTION option. DON'T TURN THIS ON.
295 # SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
296 # used to hold active sleep queues as well as sleep wait message
298 # TURNSTILE_PROFILING enables rudimentary profiling of the hash table
299 # used to hold active lock queues.
300 # UMTX_PROFILING enables rudimentary profiling of the hash table used
301 # to hold active lock queues.
302 # WITNESS enables the witness code which detects deadlocks and cycles
303 # during locking operations.
304 # WITNESS_KDB causes the witness code to drop into the kernel debugger if
305 # a lock hierarchy violation occurs or if locks are held when going to
307 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
309 options FULL_PREEMPTION
312 options WITNESS_SKIPSPIN
314 # LOCK_PROFILING - Profiling locks. See LOCK_PROFILING(9) for details.
315 options LOCK_PROFILING
316 # Set the number of buffers and the hash size. The hash size MUST be larger
317 # than the number of buffers. Hash size should be prime.
318 options MPROF_BUFFERS="1536"
319 options MPROF_HASH_SIZE="1543"
321 # Profiling for the callout(9) backend.
322 options CALLOUT_PROFILING
324 # Profiling for internal hash tables.
325 options SLEEPQUEUE_PROFILING
326 options TURNSTILE_PROFILING
327 options UMTX_PROFILING
329 # Debugging traces for epoch(9) misuse
332 #####################################################################
333 # COMPATIBILITY OPTIONS
338 # Note that as a general rule, COMPAT_FREEBSD<n> depends on
339 # COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
341 # Enable FreeBSD4 compatibility syscalls
342 options COMPAT_FREEBSD4
344 # Enable FreeBSD5 compatibility syscalls
345 options COMPAT_FREEBSD5
347 # Enable FreeBSD6 compatibility syscalls
348 options COMPAT_FREEBSD6
350 # Enable FreeBSD7 compatibility syscalls
351 options COMPAT_FREEBSD7
353 # Enable FreeBSD9 compatibility syscalls
354 options COMPAT_FREEBSD9
356 # Enable FreeBSD10 compatibility syscalls
357 options COMPAT_FREEBSD10
359 # Enable FreeBSD11 compatibility syscalls
360 options COMPAT_FREEBSD11
362 # Enable FreeBSD12 compatibility syscalls
363 options COMPAT_FREEBSD12
365 # Enable Linux Kernel Programming Interface
366 options COMPAT_LINUXKPI
369 # These three options provide support for System V Interface
370 # Definition-style interprocess communication, in the form of shared
371 # memory, semaphores, and message queues, respectively.
378 #####################################################################
382 # Compile with kernel debugger related code.
387 # Print a stack trace of the current thread on the console for a panic.
392 # Don't enter the debugger for a panic. Intended for unattended operation
393 # where you may want to enter the debugger from the console, but still want
394 # the machine to recover from a panic.
396 options KDB_UNATTENDED
399 # Enable the ddb debugger backend.
404 # Print the numerical value of symbols in addition to the symbolic
410 # Enable the remote gdb debugger backend.
415 # Trashes list pointers when they become invalid (i.e., the element is
416 # removed from a list). Relatively inexpensive to enable.
418 options QUEUE_MACRO_DEBUG_TRASH
421 # Stores information about the last caller to modify the list object
422 # in the list object. Requires additional memory overhead.
424 #options QUEUE_MACRO_DEBUG_TRACE
427 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
428 # contents of the registered sysctl nodes on the console. It is disabled by
429 # default because it generates excessively verbose console output that can
430 # interfere with serial console operation.
435 # Enable textdump by default, this disables kernel core dumps.
437 options TEXTDUMP_PREFERRED
440 # Enable extra debug messages while performing textdumps.
442 options TEXTDUMP_VERBOSE
445 # NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
447 options NO_SYSCTL_DESCR
450 # MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
451 # allocations that are smaller than a page. The purpose is to isolate
452 # different malloc types into hash classes, so that any buffer
453 # overruns or use-after-free will usually only affect memory from
454 # malloc types in that hash class. This is purely a debugging tool;
455 # by varying the hash function and tracking which hash class was
456 # corrupted, the intersection of the hash classes from each instance
457 # will point to a single malloc type that is being misused. At this
458 # point inspection or memguard(9) can be used to catch the offending
461 options MALLOC_DEBUG_MAXZONES=8
464 # DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
465 # for the kernel used to detect modify-after-free scenarios. See the
466 # memguard(9) man page for more information on usage.
468 options DEBUG_MEMGUARD
471 # DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
474 options DEBUG_REDZONE
477 # EARLY_PRINTF enables support for calling a special printf (eprintf)
478 # very early in the kernel (before cn_init() has been called). This
479 # should only be used for debugging purposes early in boot. Normally,
480 # it is not defined. It is commented out here because this feature
481 # isn't generally available. And the required eputc() isn't defined.
483 #options EARLY_PRINTF
486 # KTRACE enables the system-call tracing facility ktrace(2). To be more
487 # SMP-friendly, KTRACE uses a worker thread to process most trace events
488 # asynchronously to the thread generating the event. This requires a
489 # pre-allocated store of objects representing trace events. The
490 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
491 # The size of the pool can be adjusted both at boottime and runtime via
492 # the kern.ktrace_request_pool tunable and sysctl.
494 options KTRACE #kernel tracing
495 options KTRACE_REQUEST_POOL=101
498 # KTR is a kernel tracing facility imported from BSD/OS. It is
499 # enabled with the KTR option. KTR_ENTRIES defines the number of
500 # entries in the circular trace buffer; it may be an arbitrary number.
501 # KTR_BOOT_ENTRIES defines the number of entries during the early boot,
502 # before malloc(9) is functional.
503 # KTR_COMPILE defines the mask of events to compile into the kernel as
504 # defined by the KTR_* constants in <sys/ktr.h>. KTR_MASK defines the
505 # initial value of the ktr_mask variable which determines at runtime
506 # what events to trace. KTR_CPUMASK determines which CPU's log
507 # events, with bit X corresponding to CPU X. The layout of the string
508 # passed as KTR_CPUMASK must match a series of bitmasks each of them
509 # separated by the "," character (ie:
510 # KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF). KTR_VERBOSE enables
511 # dumping of KTR events to the console by default. This functionality
512 # can be toggled via the debug.ktr_verbose sysctl and defaults to off
513 # if KTR_VERBOSE is not defined. See ktr(4) and ktrdump(8) for details.
516 options KTR_BOOT_ENTRIES=1024
517 options KTR_ENTRIES=(128*1024)
518 options KTR_COMPILE=(KTR_ALL)
519 options KTR_MASK=KTR_INTR
520 options KTR_CPUMASK=0x3
524 # ALQ(9) is a facility for the asynchronous queuing of records from the kernel
525 # to a vnode, and is employed by services such as ktr(4) to produce trace
526 # files based on a kernel event stream. Records are written asynchronously
527 # in a worker thread.
533 # The INVARIANTS option is used in a number of source files to enable
534 # extra sanity checking of internal structures. This support is not
535 # enabled by default because of the extra time it would take to check
536 # for these conditions, which can only occur as a result of
537 # programming errors.
542 # The INVARIANT_SUPPORT option makes us compile in support for
543 # verifying some of the internal structures. It is a prerequisite for
544 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
545 # called. The intent is that you can set 'INVARIANTS' for single
546 # source files (by changing the source file or specifying it on the
547 # command line) if you have 'INVARIANT_SUPPORT' enabled. Also, if you
548 # wish to build a kernel module with 'INVARIANTS', then adding
549 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
550 # infrastructure without the added overhead.
552 options INVARIANT_SUPPORT
555 # The KASSERT_PANIC_OPTIONAL option allows kasserts to fire without
556 # necessarily inducing a panic. Panic is the default behavior, but
557 # runtime options can configure it either entirely off, or off with a
560 options KASSERT_PANIC_OPTIONAL
563 # The DIAGNOSTIC option is used to enable extra debugging information
564 # and invariants checking. The added checks are too expensive or noisy
565 # for an INVARIANTS kernel and thus are disabled by default. It is
566 # expected that a kernel configured with DIAGNOSTIC will also have the
567 # INVARIANTS option enabled.
572 # REGRESSION causes optional kernel interfaces necessary only for regression
573 # testing to be enabled. These interfaces may constitute security risks
574 # when enabled, as they permit processes to easily modify aspects of the
575 # run-time environment to reproduce unlikely or unusual (possibly normally
576 # impossible) scenarios.
581 # This option lets some drivers co-exist that can't co-exist in a running
582 # system. This is used to be able to compile all kernel code in one go for
583 # quality assurance purposes (like this file, which the option takes it name
586 options COMPILING_LINT
589 # STACK enables the stack(9) facility, allowing the capture of kernel stack
590 # for the purpose of procinfo(1), etc. stack(9) will also be compiled in
591 # automatically if DDB(4) is compiled into the kernel.
596 # The NUM_CORE_FILES option specifies the limit for the number of core
597 # files generated by a particular process, when the core file format
598 # specifier includes the %I pattern. Since we only have 1 character for
599 # the core count in the format string, meaning the range will be 0-9, the
600 # maximum value allowed for this option is 10.
601 # This core file limit can be adjusted at runtime via the debug.ncores
604 options NUM_CORE_FILES=5
607 # The TSLOG option enables timestamped logging of events, especially
608 # function entries/exits, in order to track the time spent by the kernel.
609 # In particular, this is useful when investigating the early boot process,
610 # before it is possible to use more sophisticated tools like DTrace.
611 # The TSLOGSIZE option controls the size of the (preallocated, fixed
612 # length) buffer used for storing these events (default: 262144 records).
614 # For security reasons the TSLOG option should not be enabled on systems
615 # used in production.
618 options TSLOGSIZE=262144
621 #####################################################################
622 # PERFORMANCE MONITORING OPTIONS
625 # The hwpmc driver that allows the use of in-CPU performance monitoring
626 # counters for performance monitoring. The base kernel needs to be configured
627 # with the 'options' line, while the hwpmc device can be either compiled
628 # in or loaded as a loadable kernel module.
630 # Additional configuration options may be required on specific architectures,
631 # please see hwpmc(4).
633 device hwpmc # Driver (also a loadable module)
635 options HWPMC_HOOKS # Other necessary kernel hooks
638 #####################################################################
644 options INET #Internet communications protocols
645 options INET6 #IPv6 communications protocols
647 options RATELIMIT # TX rate limiting support
649 options ROUTETABLES=2 # allocated fibs up to 65536. default is 1.
650 # but that would be a bad idea as they are large.
652 options TCP_OFFLOAD # TCP offload support.
653 options TCP_RFC7413 # TCP Fast Open
657 # In order to enable IPSEC you MUST also add device crypto to
658 # your kernel configuration
659 options IPSEC #IP security (requires device crypto)
661 # Option IPSEC_SUPPORT does not enable IPsec, but makes it possible to
662 # load it as a kernel module. You still MUST add device crypto to your kernel
664 options IPSEC_SUPPORT
665 #options IPSEC_DEBUG #debug for IP security
668 # TLS framing and encryption/decryption of data over TCP sockets.
669 options KERN_TLS # TLS transmit and receive offload
671 # Netlink kernel/user<>kernel/user messaging interface
676 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
678 options NETSMB #SMB/CIFS requester
680 # mchain library. It can be either loaded as KLD or compiled into kernel
683 # libalias library, performing NAT
687 # SCTP is a NEW transport protocol defined by
688 # RFC2960 updated by RFC3309 and RFC3758.. and
689 # soon to have a new base RFC and many many more
690 # extensions. This release supports all the extensions
691 # including many drafts (most about to become RFC's).
692 # It is the reference implementation of SCTP
693 # and is quite well tested.
695 # Note YOU MUST have both INET and INET6 defined.
696 # You don't have to enable V6, but SCTP is
697 # dual stacked and so far we have not torn apart
698 # the V6 and V4.. since an association can span
699 # both a V6 and V4 address at the SAME time :-)
701 # The SCTP_SUPPORT option does not enable SCTP, but provides the necessary
702 # support for loading SCTP as a loadable kernel module.
707 # There are bunches of options:
708 # this one turns on all sorts of
709 # nastily printing that you can
710 # do. It's all controlled by a
711 # bit mask (settable by socket opt and
712 # by sysctl). Including will not cause
713 # logging until you set the bits.. but it
714 # can be quite verbose.. so without this
715 # option we don't do any of the tests for
716 # bits and prints.. which makes the code run
717 # faster.. if you are not debugging don't use.
721 # All that options after that turn on specific types of
722 # logging. You can monitor CWND growth, flight size
723 # and all sorts of things. Go look at the code and
724 # see. I have used this to produce interesting
725 # charts and graphs as well :->
727 # I have not yet committed the tools to get and print
728 # the logs, I will do that eventually .. before then
729 # if you want them send me an email rrs@freebsd.org
730 # You basically must have ktr(4) enabled for these
731 # and you then set the sysctl to turn on/off various
732 # logging bits. Use ktrdump(8) to pull the log and run
733 # it through a display program.. and graphs and other
736 options SCTP_LOCK_LOGGING
737 options SCTP_MBUF_LOGGING
738 options SCTP_MBCNT_LOGGING
739 options SCTP_PACKET_LOGGING
740 options SCTP_LTRACE_CHUNKS
741 options SCTP_LTRACE_ERRORS
743 # altq(9). Enable the base part of the hooks with the ALTQ option.
744 # Individual disciplines must be built into the base system and can not be
745 # loaded as modules at this point. ALTQ requires a stable TSC so if yours is
746 # broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
749 options ALTQ_CBQ # Class Based Queueing
750 options ALTQ_RED # Random Early Detection
751 options ALTQ_RIO # RED In/Out
752 options ALTQ_CODEL # CoDel Active Queueing
753 options ALTQ_HFSC # Hierarchical Packet Scheduler
754 options ALTQ_FAIRQ # Fair Packet Scheduler
755 options ALTQ_CDNR # Traffic conditioner
756 options ALTQ_PRIQ # Priority Queueing
757 options ALTQ_NOPCC # Required if the TSC is unusable
760 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
761 # Individual node types can be enabled with the corresponding option
762 # listed below; however, this is not strictly necessary as netgraph
763 # will automatically load the corresponding KLD module if the node type
764 # is not already compiled into the kernel. Each type below has a
765 # corresponding man page, e.g., ng_async(8).
766 options NETGRAPH # netgraph(4) system
767 options NETGRAPH_DEBUG # enable extra debugging, this
768 # affects netgraph(4) and nodes
770 options NETGRAPH_ASYNC
771 options NETGRAPH_ATMLLC
772 options NETGRAPH_BLUETOOTH # ng_bluetooth(4)
773 options NETGRAPH_BLUETOOTH_HCI # ng_hci(4)
774 options NETGRAPH_BLUETOOTH_L2CAP # ng_l2cap(4)
775 options NETGRAPH_BLUETOOTH_SOCKET # ng_btsocket(4)
776 options NETGRAPH_BLUETOOTH_UBT # ng_ubt(4)
777 options NETGRAPH_BLUETOOTH_UBTBCMFW # ubtbcmfw(4)
779 options NETGRAPH_BRIDGE
781 options NETGRAPH_CHECKSUM
782 options NETGRAPH_CISCO
783 options NETGRAPH_DEFLATE
784 options NETGRAPH_DEVICE
785 options NETGRAPH_ECHO
786 options NETGRAPH_EIFACE
787 options NETGRAPH_ETHER
788 options NETGRAPH_FRAME_RELAY
790 options NETGRAPH_GIF_DEMUX
791 options NETGRAPH_HOLE
792 options NETGRAPH_IFACE
793 options NETGRAPH_IP_INPUT
794 options NETGRAPH_IPFW
795 options NETGRAPH_KSOCKET
796 options NETGRAPH_L2TP
798 options NETGRAPH_MPPC_COMPRESSION
799 options NETGRAPH_MPPC_ENCRYPTION
800 options NETGRAPH_NETFLOW
802 options NETGRAPH_ONE2MANY
803 options NETGRAPH_PATCH
804 options NETGRAPH_PIPE
806 options NETGRAPH_PPPOE
807 options NETGRAPH_PPTPGRE
808 options NETGRAPH_PRED1
809 options NETGRAPH_RFC1490
810 options NETGRAPH_SOCKET
811 options NETGRAPH_SPLIT
812 options NETGRAPH_SPPP
814 options NETGRAPH_TCPMSS
818 options NETGRAPH_VLAN
820 # 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.
948 # WireGuard interface.
952 # Internet family options:
954 # MROUTING enables the kernel multicast packet forwarder, which works
955 # with mrouted and XORP.
957 # IPFIREWALL enables support for IP firewall construction, in
958 # conjunction with the `ipfw' program. IPFIREWALL_VERBOSE sends
959 # logged packets to the system logger. IPFIREWALL_VERBOSE_LIMIT
960 # limits the number of times a matching entry can be logged.
962 # WARNING: IPFIREWALL defaults to a policy of "deny ip from any to any"
963 # and if you do not add other rules during startup to allow access,
964 # YOU WILL LOCK YOURSELF OUT. It is suggested that you set firewall_type=open
965 # in /etc/rc.conf when first enabling this feature, then refining the
966 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
967 # feature works properly.
969 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
970 # allow everything. Use with care, if a cracker can crash your
971 # firewall machine, they can get to your protected machines. However,
972 # if you are using it as an as-needed filter for specific problems as
973 # they arise, then this may be for you. Changing the default to 'allow'
974 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
977 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''. It
978 # depends on IPFIREWALL if compiled into the kernel.
980 # IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
983 # IPFIREWALL_NAT64 adds support for in kernel NAT64 in ipfw.
985 # IPFIREWALL_NPTV6 adds support for in kernel NPTv6 in ipfw.
987 # IPFIREWALL_PMOD adds support for protocols modification module. Currently
988 # it supports only TCP MSS modification.
990 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
991 # packets without touching the TTL). This can be useful to hide firewalls
992 # from traceroute and similar tools.
994 # PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
996 # TCPDEBUG enables code which keeps traces of the TCP state machine
997 # for sockets with the SO_DEBUG option set, which can then be examined
998 # using the trpt(8) utility.
1000 # TCPPCAP enables code which keeps the last n packets sent and received
1003 # TCP_BLACKBOX enables enhanced TCP event logging.
1005 # TCP_HHOOK enables the hhook(9) framework hooks for the TCP stack.
1007 # ROUTE_MPATH provides support for multipath routing.
1009 options MROUTING # Multicast routing
1010 options IPFIREWALL #firewall
1011 options IPFIREWALL_VERBOSE #enable logging to syslogd(8)
1012 options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
1013 options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default
1014 options IPFIREWALL_NAT #ipfw kernel nat support
1015 options IPFIREWALL_NAT64 #ipfw kernel NAT64 support
1016 options IPFIREWALL_NPTV6 #ipfw kernel IPv6 NPT support
1017 options IPDIVERT #divert sockets
1018 options IPFILTER #ipfilter support
1019 options IPFILTER_LOG #ipfilter logging
1020 options IPFILTER_LOOKUP #ipfilter pools
1021 options IPFILTER_DEFAULT_BLOCK #block all packets by default
1022 options IPSTEALTH #support for stealth forwarding
1023 options PF_DEFAULT_TO_DROP #drop everything by default
1026 options TCP_BLACKBOX
1030 # The MBUF_STRESS_TEST option enables options which create
1031 # various random failures / extreme cases related to mbuf
1032 # functions. See mbuf(9) for a list of available test cases.
1033 # MBUF_PROFILING enables code to profile the mbuf chains
1034 # exiting the system (via participating interfaces) and
1035 # return a logarithmic histogram of monitored parameters
1036 # (e.g. packet size, wasted space, number of mbufs in chain).
1037 options MBUF_STRESS_TEST
1038 options MBUF_PROFILING
1040 # Statically link in accept filters
1041 options ACCEPT_FILTER_DATA
1042 options ACCEPT_FILTER_DNS
1043 options ACCEPT_FILTER_HTTP
1045 # TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
1046 # carried in TCP option 19. This option is commonly used to protect
1047 # TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
1048 # This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
1049 # This requires the use of 'device crypto' and either 'options IPSEC' or
1050 # 'options IPSEC_SUPPORT'.
1051 options TCP_SIGNATURE #include support for RFC 2385
1053 # DUMMYNET enables the "dummynet" bandwidth limiter. You need IPFIREWALL
1054 # as well. See dummynet(4) and ipfw(8) for more info. When you run
1055 # DUMMYNET it is advisable to also have at least "options HZ=1000" to achieve
1056 # a smooth scheduling of the traffic.
1059 # The DEBUGNET option enables a basic debug/panic-time networking API. It
1060 # is used by NETDUMP and NETGDB.
1063 # The NETDUMP option enables netdump(4) client support in the kernel.
1064 # This allows a panicking kernel to transmit a kernel dump to a remote host.
1067 # The NETGDB option enables netgdb(4) support in the kernel. This allows a
1068 # panicking kernel to be debugged as a GDB remote over the network.
1071 #####################################################################
1072 # FILESYSTEM OPTIONS
1075 # Only the root filesystem needs to be statically compiled or preloaded
1076 # as module; everything else will be automatically loaded at mount
1077 # time. Some people still prefer to statically compile other
1078 # filesystems as well.
1080 # NB: The UNION filesystem was known to be buggy in the past. It is now
1081 # being actively maintained, although there are still some issues being
1085 # One of these is mandatory:
1086 options FFS #Fast filesystem
1087 options NFSCL #Network File System client
1089 # The rest are optional:
1090 options AUTOFS #Automounter filesystem
1091 options CD9660 #ISO 9660 filesystem
1092 options FDESCFS #File descriptor filesystem
1093 options FUSEFS #FUSEFS support module
1094 options MSDOSFS #MS DOS File System (FAT, FAT32)
1095 options NFSLOCKD #Network Lock Manager
1096 options NFSD #Network Filesystem Server
1097 options KGSSAPI #Kernel GSSAPI implementation
1099 options NULLFS #NULL filesystem
1100 options PROCFS #Process filesystem (requires PSEUDOFS)
1101 options PSEUDOFS #Pseudo-filesystem framework
1102 options PSEUDOFS_TRACE #Debugging support for PSEUDOFS
1103 options SMBFS #SMB/CIFS filesystem
1104 options TMPFS #Efficient memory filesystem
1105 options UDF #Universal Disk Format
1106 options UNIONFS #Union filesystem
1107 # The xFS_ROOT options REQUIRE the associated ``options xFS''
1108 options NFS_ROOT #NFS usable as root device
1110 # Soft updates is a technique for improving filesystem speed and
1111 # making abrupt shutdown less risky.
1115 # Extended attributes allow additional data to be associated with files,
1116 # and is used for ACLs, Capabilities, and MAC labels.
1117 # See src/sys/ufs/ufs/README.extattr for more information.
1119 options UFS_EXTATTR_AUTOSTART
1121 # Access Control List support for UFS filesystems. The current ACL
1122 # implementation requires extended attribute support, UFS_EXTATTR,
1123 # for the underlying filesystem.
1124 # See src/sys/ufs/ufs/README.acls for more information.
1127 # Directory hashing improves the speed of operations on very large
1128 # directories at the expense of some memory.
1131 # Gjournal-based UFS journaling support.
1132 options UFS_GJOURNAL
1134 # Make space in the kernel for a root filesystem on a md device.
1135 # Define to the number of kilobytes to reserve for the filesystem.
1136 # This is now optional.
1137 # If not defined, the root filesystem passed in as the MFS_IMAGE makeoption
1138 # will be automatically embedded in the kernel during linking. Its exact size
1139 # will be consumed within the kernel.
1140 # If defined, the old way of embedding the filesystem in the kernel will be
1141 # used. That is to say MD_ROOT_SIZE KB will be allocated in the kernel and
1142 # later, the filesystem image passed in as the MFS_IMAGE makeoption will be
1143 # dd'd into the reserved space if it fits.
1144 options MD_ROOT_SIZE=10
1146 # Make the md device a potential root device, either with preloaded
1147 # images of type mfs_root or md_root.
1150 # Write-protect the md root device so that it may not be mounted writeable.
1151 options MD_ROOT_READONLY
1153 # Allow to read MD image from external memory regions
1156 # Disk quotas are supported when this option is enabled.
1157 options QUOTA #enable disk quotas
1159 # If you are running a machine just as a fileserver for PC and MAC
1160 # users, using SAMBA, you may consider setting this option
1161 # and keeping all those users' directories on a filesystem that is
1162 # mounted with the suiddir option. This gives new files the same
1163 # ownership as the directory (similar to group). It's a security hole
1164 # if you let these users run programs, so confine it to file-servers
1165 # (but it'll save you lots of headaches in those cases). Root owned
1166 # directories are exempt and X bits are cleared. The suid bit must be
1167 # set on the directory as well; see chmod(1). PC owners can't see/set
1168 # ownerships so they keep getting their toes trodden on. This saves
1169 # you all the support calls as the filesystem it's used on will act as
1170 # they expect: "It's my dir so it must be my file".
1175 options NFS_MINATTRTIMO=3 # VREG attrib cache timeout in sec
1176 options NFS_MAXATTRTIMO=60
1177 options NFS_MINDIRATTRTIMO=30 # VDIR attrib cache timeout in sec
1178 options NFS_MAXDIRATTRTIMO=60
1179 options NFS_DEBUG # Enable NFS Debugging
1182 # Add support for the EXT2FS filesystem of Linux fame. Be a bit
1183 # careful with this - the ext2fs code has a tendency to lag behind
1184 # changes and not be exercised very much, so mounting read/write could
1185 # be dangerous (and even mounting read only could result in panics.)
1189 # The system memory devices; /dev/mem, /dev/kmem
1192 # The kernel symbol table device; /dev/ksyms
1195 # Optional character code conversion support with LIBICONV.
1196 # Each option requires their base file system and LIBICONV.
1197 options CD9660_ICONV
1198 options MSDOSFS_ICONV
1202 #####################################################################
1205 # Real time extensions added in the 1993 POSIX
1206 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1208 options _KPOSIX_PRIORITY_SCHEDULING
1209 # p1003_1b_semaphores are very experimental,
1210 # user should be ready to assist in debugging if problems arise.
1211 options P1003_1B_SEMAPHORES
1213 # POSIX message queue
1214 options P1003_1B_MQUEUE
1216 #####################################################################
1217 # SECURITY POLICY PARAMETERS
1219 # Support for BSM audit
1222 # Support for Mandatory Access Control (MAC):
1225 options MAC_BSDEXTENDED
1231 options MAC_PARTITION
1233 options MAC_PRIORITY
1234 options MAC_SEEOTHERUIDS
1238 # Support for Capsicum
1239 options CAPABILITIES # fine-grained rights on file descriptors
1240 options CAPABILITY_MODE # sandboxes with no global namespace access
1243 #####################################################################
1246 # The granularity of operation is controlled by the kernel option HZ whose
1247 # default value (1000 on most architectures) means a granularity of 1ms
1248 # (1s/HZ). Historically, the default was 100, but finer granularity is
1249 # required for DUMMYNET and other systems on modern hardware. There are
1250 # reasonable arguments that HZ should, in fact, be 100 still; consider,
1251 # that reducing the granularity too much might cause excessive overhead in
1252 # clock interrupt processing, potentially causing ticks to be missed and thus
1253 # actually reducing the accuracy of operation.
1257 # Enable support for the kernel PLL to use an external PPS signal,
1258 # under supervision of [x]ntpd(8)
1259 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
1263 # Enable support for generic feed-forward clocks in the kernel.
1264 # The feed-forward clock support is an alternative to the feedback oriented
1265 # ntpd/system clock approach, and is to be used with a feed-forward
1266 # synchronization algorithm such as the RADclock:
1267 # More info here: http://www.synclab.org/radclock
1272 #####################################################################
1275 # SCSI DEVICE CONFIGURATION
1277 # The SCSI subsystem consists of the `base' SCSI code, a number of
1278 # high-level SCSI device `type' drivers, and the low-level host-adapter
1279 # device drivers. The host adapters are listed in the ISA and PCI
1280 # device configuration sections below.
1282 # It is possible to wire down your SCSI devices so that a given bus,
1283 # target, and LUN always come on line as the same device unit. In
1284 # earlier versions the unit numbers were assigned in the order that
1285 # the devices were probed on the SCSI bus. This means that if you
1286 # removed a disk drive, you may have had to rewrite your /etc/fstab
1287 # file, and also that you had to be careful when adding a new disk
1288 # as it may have been probed earlier and moved your device configuration
1291 # This old behavior is maintained as the default behavior. The unit
1292 # assignment begins with the first non-wired down unit for a device
1293 # type. For example, if you wire a disk as "da3" then the first
1294 # non-wired disk will be assigned da4.
1296 # The syntax for wiring down devices is:
1298 envvar hint.scbus.0.at="ahc0"
1299 envvar hint.scbus.1.at="ahc1"
1300 envvar hint.scbus.1.bus="0"
1301 envvar hint.scbus.3.at="ahc2"
1302 envvar hint.scbus.3.bus="0"
1303 envvar hint.scbus.2.at="ahc2"
1304 envvar hint.scbus.2.bus="1"
1305 envvar hint.da.0.at="scbus0"
1306 envvar hint.da.0.target="0"
1307 envvar hint.da.0.unit="0"
1308 envvar hint.da.1.at="scbus3"
1309 envvar hint.da.1.target="1"
1310 envvar hint.da.2.at="scbus2"
1311 envvar hint.da.2.target="3"
1312 envvar hint.sa.1.at="scbus1"
1313 envvar hint.sa.1.target="6"
1315 # "units" (SCSI logical unit number) that are not specified are
1316 # treated as if specified as LUN 0.
1318 # All SCSI devices allocate as many units as are required.
1320 # The ch driver drives SCSI Media Changer ("jukebox") devices.
1322 # The da driver drives SCSI Direct Access ("disk") and Optical Media
1325 # The sa driver drives SCSI Sequential Access ("tape") devices.
1327 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1329 # The ses driver drives SCSI Environment Services ("ses") and
1330 # SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1332 # The pt driver drives SCSI Processor devices.
1334 # The sg driver provides a passthrough API that is compatible with the
1335 # Linux SG driver. It will work in conjunction with the Linuxulator
1336 # to run linux SG apps. It can also stand on its own and provide
1337 # source level API compatibility for porting apps to FreeBSD.
1339 # Target Mode support is provided here but also requires that a SIM
1340 # (SCSI Host Adapter Driver) provide support as well.
1342 # The targ driver provides target mode support as a Processor type device.
1343 # It exists to give the minimal context necessary to respond to Inquiry
1344 # commands. There is a sample user application that shows how the rest
1345 # of the command support might be done in /usr/share/examples/scsi_target.
1347 # The targbh driver provides target mode support and exists to respond
1348 # to incoming commands that do not otherwise have a logical unit assigned
1351 # The pass driver provides a passthrough API to access the CAM subsystem.
1353 device scbus #base SCSI code
1354 device ch #SCSI media changers
1355 device da #SCSI direct access devices (aka disks)
1356 device sa #SCSI tapes
1357 device cd #SCSI CD-ROMs
1358 device ses #Enclosure Services (SES and SAF-TE)
1359 device pt #SCSI processor
1360 device targ #SCSI Target Mode Code
1361 device targbh #SCSI Target Mode Blackhole Device
1362 device pass #CAM passthrough driver
1363 device sg #Linux SCSI passthrough
1364 device ctl #CAM Target Layer
1367 # debugging options:
1368 # CAMDEBUG Compile in all possible debugging.
1369 # CAM_DEBUG_COMPILE Debug levels to compile in.
1370 # CAM_DEBUG_FLAGS Debug levels to enable on boot.
1371 # CAM_DEBUG_BUS Limit debugging to the given bus.
1372 # CAM_DEBUG_TARGET Limit debugging to the given target.
1373 # CAM_DEBUG_LUN Limit debugging to the given lun.
1374 # CAM_DEBUG_DELAY Delay in us after printing each debug line.
1375 # CAM_IO_STATS Publish additional CAM device statics by sysctl
1377 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1378 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1379 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
1380 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
1381 # queue after a bus reset, and the number of milliseconds to
1382 # freeze the device queue after a bus device reset. This
1383 # can be changed at boot and runtime with the
1384 # kern.cam.scsi_delay tunable/sysctl.
1386 options CAM_DEBUG_COMPILE=-1
1387 options CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
1388 options CAM_DEBUG_BUS=-1
1389 options CAM_DEBUG_TARGET=-1
1390 options CAM_DEBUG_LUN=-1
1391 options CAM_DEBUG_DELAY=1
1392 options CAM_MAX_HIGHPOWER=4
1393 options SCSI_NO_SENSE_STRINGS
1394 options SCSI_NO_OP_STRINGS
1395 options SCSI_DELAY=5000 # Be pessimistic about Joe SCSI device
1396 options CAM_IOSCHED_DYNAMIC
1397 options CAM_IO_STATS
1398 options CAM_TEST_FAILURE
1400 # Options for the CAM CDROM driver:
1401 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1402 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1403 # enforced if there is I/O waiting for another LUN
1404 # The compiled in defaults for these variables are 2 and 10 seconds,
1407 # These can also be changed on the fly with the following sysctl variables:
1408 # kern.cam.cd.changer.min_busy_seconds
1409 # kern.cam.cd.changer.max_busy_seconds
1411 options CHANGER_MIN_BUSY_SECONDS=2
1412 options CHANGER_MAX_BUSY_SECONDS=10
1414 # Options for the CAM sequential access driver:
1415 # SA_IO_TIMEOUT: Timeout for read/write/wfm operations, in minutes
1416 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
1417 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
1418 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
1419 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
1420 options SA_IO_TIMEOUT=4
1421 options SA_SPACE_TIMEOUT=60
1422 options SA_REWIND_TIMEOUT=(2*60)
1423 options SA_ERASE_TIMEOUT=(4*60)
1424 options SA_1FM_AT_EOD
1426 # Optional timeout for the CAM processor target (pt) device
1427 # This is specified in seconds. The default is 60 seconds.
1428 options SCSI_PT_DEFAULT_TIMEOUT=60
1430 # Optional enable of doing SES passthrough on other devices (e.g., disks)
1432 # Normally disabled because a lot of newer SCSI disks report themselves
1433 # as having SES capabilities, but this can then clot up attempts to build
1434 # a topology with the SES device that's on the box these drives are in....
1435 options SES_ENABLE_PASSTHROUGH
1438 #####################################################################
1439 # MISCELLANEOUS DEVICES AND OPTIONS
1441 device pty #BSD-style compatibility pseudo ttys
1442 device nmdm #back-to-back tty devices
1443 device md #Memory/malloc disk
1444 device snp #Snoop device - to look at pty/vty/etc..
1445 device ccd #Concatenated disk driver
1446 device firmware #firmware(9) support
1448 # Kernel side iconv library
1451 # Size of the kernel message buffer. Should be N * pagesize.
1452 options MSGBUF_SIZE=40960
1455 #####################################################################
1456 # HARDWARE BUS CONFIGURATION
1459 # PCI bus & PCI options:
1462 options PCI_HP # PCI-Express native HotPlug
1463 options PCI_IOV # PCI SR-IOV support
1466 #####################################################################
1467 # HARDWARE DEVICE CONFIGURATION
1469 # For ISA the required hints are listed.
1470 # PCI, CardBus, SD/MMC and pccard are self identifying buses, so
1471 # no hints are needed.
1474 # Mandatory devices:
1477 # These options are valid for other keyboard drivers as well.
1478 options KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
1479 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
1481 device kbdmux # keyboard multiplexer
1482 options KBDMUX_DFLT_KEYMAP # specify the built-in keymap
1483 makeoptions KBDMUX_DFLT_KEYMAP=it.iso
1485 options FB_DEBUG # Frame buffer debugging
1487 # Enable experimental features of the syscons terminal emulator (teken).
1488 options TEKEN_CONS25 # cons25-style terminal emulation
1489 options TEKEN_UTF8 # UTF-8 output handling
1491 # The vt video console driver.
1493 options VT_ALT_TO_ESC_HACK=1 # Prepend ESC sequence to ALT keys
1494 options VT_MAXWINDOWS=16 # Number of virtual consoles
1495 options VT_TWOBUTTON_MOUSE # Use right mouse button to paste
1497 # The following options set the maximum framebuffer size.
1498 options VT_FB_MAX_HEIGHT=480
1499 options VT_FB_MAX_WIDTH=640
1501 # The following options will let you change the default vt terminal colors.
1502 options TERMINAL_NORM_ATTR=(FG_GREEN|BG_BLACK)
1503 options TERMINAL_KERN_ATTR=(FG_LIGHTRED|BG_BLACK)
1510 # SCSI host adapters:
1512 # aacraid: Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming
1513 # families. Container interface, CAM required.
1514 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1515 # 19160x/29160x, aic7770/aic78xx
1516 # ahd: Adaptec 29320/39320 Controllers.
1517 # esp: Emulex ESP, NCR 53C9x and QLogic FAS families based controllers
1518 # including the AMD Am53C974 (found on devices such as the Tekram
1519 # DC-390(T)) and the Sun ESP and FAS families of controllers
1520 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1521 # ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1522 # ISP 12160 Ultra3 SCSI,
1523 # Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1524 # Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1525 # Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
1526 # ispfw: Firmware module for Qlogic host adapters
1527 # mpr: LSI-Logic MPT/Fusion Gen 3
1528 # mps: LSI-Logic MPT/Fusion Gen 2
1529 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
1530 # or FC9x9 Fibre Channel host adapters.
1531 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1532 # 53C810, 53C810A, 53C815, 53C825, 53C825A, 53C860, 53C875,
1533 # 53C876, 53C885, 53C895, 53C895A, 53C896, 53C897, 53C1510D,
1534 # 53C1010-33, 53C1010-66.
1540 device iscsi_initiator
1542 envvar hint.isp.0.disable="1"
1543 envvar hint.isp.0.role="3"
1544 envvar hint.isp.0.prefer_iomap="1"
1545 envvar hint.isp.0.prefer_memmap="1"
1546 envvar hint.isp.0.fwload_disable="1"
1547 envvar hint.isp.0.ignore_nvram="1"
1548 envvar hint.isp.0.fullduplex="1"
1549 envvar hint.isp.0.topology="lport"
1550 envvar hint.isp.0.topology="nport"
1551 envvar hint.isp.0.topology="lport-only"
1552 envvar hint.isp.0.topology="nport-only"
1553 # we can't get u_int64_t types, nor can we get strings if it's got
1554 # a leading 0x, hence this silly dodge.
1555 envvar hint.isp.0.portwnn="w50000000aaaa0000"
1556 envvar hint.isp.0.nodewnn="w50000000aaaa0001"
1558 device mpr # LSI-Logic MPT-Fusion 3
1559 device mps # LSI-Logic MPT-Fusion 2
1560 device mpt # LSI-Logic MPT-Fusion
1563 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1564 # controllers that have it configured only if this option is set. Unfortunately,
1565 # this doesn't work on some motherboards, which prevents it from being the
1567 options AHC_ALLOW_MEMIO
1569 # Dump the contents of the ahc controller configuration PROM.
1570 options AHC_DUMP_EEPROM
1572 # Bitmap of units to enable targetmode operations.
1573 options AHC_TMODE_ENABLE
1575 # Compile in Aic7xxx Debugging code.
1578 # Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1579 options AHC_DEBUG_OPTS
1581 # Print register bitfields in debug output. Adds ~128k to driver
1583 options AHC_REG_PRETTY_PRINT
1585 # Compile in aic79xx debugging code.
1588 # Aic79xx driver debugging options. Adds ~215k to driver. See ahd(4).
1589 options AHD_DEBUG_OPTS=0xFFFFFFFF
1591 # Print human-readable register definitions when debugging
1592 options AHD_REG_PRETTY_PRINT
1594 # Bitmap of units to enable targetmode operations.
1595 options AHD_TMODE_ENABLE
1597 # Options used in dev/iscsi (Software iSCSI stack)
1599 options ISCSI_INITIATOR_DEBUG=9
1601 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
1603 # ISP_TARGET_MODE - enable target mode operation
1605 options ISP_TARGET_MODE=1
1607 # ISP_DEFAULT_ROLES - default role
1611 # both=3 (not supported currently)
1613 # ISP_INTERNAL_TARGET (trivial internal disk target, for testing)
1615 options ISP_DEFAULT_ROLES=0
1617 #options SYM_SETUP_SCSI_DIFF #-HVD support for 825a, 875, 885
1618 # disabled:0 (default), enabled:1
1619 #options SYM_SETUP_PCI_PARITY #-PCI parity checking
1620 # disabled:0, enabled:1 (default)
1621 #options SYM_SETUP_MAX_LUN #-Number of LUNs supported
1622 # default:8, range:[1..64]
1625 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
1626 # These controllers have a SCSI-like interface, and require the
1627 # CAM infrastructure.
1632 # Intel Integrated RAID controllers.
1633 # This driver was developed and is maintained by Intel. Contacts
1634 # at Intel for this driver are
1635 # "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
1636 # "Leubner, Achim" <achim.leubner@intel.com>.
1641 # Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
1642 # firmware. These controllers have a SCSI-like interface, and require
1643 # the CAM infrastructure.
1648 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers. Only
1649 # one entry is needed; the code will find and configure all supported
1652 device ida # Compaq Smart RAID
1653 device mlx # Mylex DAC960
1654 device amr # AMI MegaRAID
1655 device amrp # SCSI Passthrough interface (optional, CAM req.)
1656 device mfi # LSI MegaRAID SAS
1657 device mfip # LSI MegaRAID SAS passthrough, requires CAM
1659 device mrsas # LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
1664 device twe # 3ware ATA RAID
1667 # Serial ATA host controllers:
1669 # ahci: Advanced Host Controller Interface (AHCI) compatible
1670 # mvs: Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
1671 # siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
1673 # These drivers are part of cam(4) subsystem. They supersede less featured
1674 # ata(4) subsystem drivers, supporting same hardware.
1681 # The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
1682 # PC Card devices. You only need one "device ata" for it to find all
1683 # PCI and PC Card ATA/ATAPI devices on modern machines.
1684 # Alternatively, individual bus and chipset drivers may be chosen by using
1685 # the 'atacore' driver then selecting the drivers on a per vendor basis.
1686 # For example to build a system which only supports a VIA chipset,
1687 # omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
1691 #device atacore # Core ATA functionality
1692 #device atapccard # CARDBUS support
1693 #device ataisa # ISA bus support
1694 #device atapci # PCI bus support; only generic chipset support
1697 #device ataacard # ACARD
1698 #device ataacerlabs # Acer Labs Inc. (ALI)
1699 #device ataamd # American Micro Devices (AMD)
1700 #device ataati # ATI
1701 #device atacenatek # Cenatek
1702 #device atacypress # Cypress
1703 #device atacyrix # Cyrix
1704 #device atahighpoint # HighPoint
1705 #device ataintel # Intel
1706 #device ataite # Integrated Technology Inc. (ITE)
1707 #device atajmicron # JMicron
1708 #device atamarvell # Marvell
1709 #device atamicron # Micron
1710 #device atanational # National
1711 #device atanetcell # NetCell
1712 #device atanvidia # nVidia
1713 #device atapromise # Promise
1714 #device ataserverworks # ServerWorks
1715 #device atasiliconimage # Silicon Image Inc. (SiI) (formerly CMD)
1716 #device atasis # Silicon Integrated Systems Corp.(SiS)
1717 #device atavia # VIA Technologies Inc.
1720 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1721 envvar hint.ata.0.at="isa"
1722 envvar hint.ata.0.port="0x1f0"
1723 envvar hint.ata.0.irq="14"
1724 envvar hint.ata.1.at="isa"
1725 envvar hint.ata.1.port="0x170"
1726 envvar hint.ata.1.irq="15"
1729 # uart: generic driver for serial interfaces.
1733 # Options for uart(4)
1734 options UART_PPS_ON_CTS # Do time pulse capturing using CTS
1736 options UART_POLL_FREQ # Set polling rate, used when hw has
1737 # no interrupt support (50 Hz default).
1739 # The following hint should only be used for pure ISA devices. It is not
1740 # needed otherwise. Use of hints is strongly discouraged.
1741 envvar hint.uart.0.at="isa"
1743 # The following 3 hints are used when the UART is a system device (i.e., a
1744 # console or debug port), but only on platforms that don't have any other
1745 # means to pass the information to the kernel. The unit number of the hint
1746 # is only used to bundle the hints together. There is no relation to the
1747 # unit number of the probed UART.
1748 envvar hint.uart.0.port="0x3f8"
1749 envvar hint.uart.0.flags="0x10"
1750 envvar hint.uart.0.baud="115200"
1752 # `flags' for serial drivers that support consoles, like uart(4):
1753 # 0x10 enable console support for this unit. Other console flags
1754 # (if applicable) are ignored unless this is set. Enabling
1755 # console support does not make the unit the preferred console.
1756 # Boot with -h or set boot_serial=YES in the loader.
1757 # Currently, at most one unit can have console support; the
1758 # first one (in config file order) with this flag set is
1760 # 0x80 use this port for serial line gdb support in ddb. Also known
1764 # Options for serial drivers that support consoles:
1765 options BREAK_TO_DEBUGGER # A BREAK/DBG on the console goes to
1766 # ddb, if available.
1768 # Solaris implements a new BREAK which is initiated by a character
1769 # sequence CR ~ ^b which is similar to a familiar pattern used on
1770 # Sun servers by the Remote Console. There are FreeBSD extensions:
1771 # CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
1772 options ALT_BREAK_TO_DEBUGGER
1774 # Serial Communications Controller
1775 # Supports the Freescale/NXP QUad Integrated and Zilog Z8530 multi-channel
1776 # communications controllers.
1779 # PCI Universal Communications driver
1780 # Supports various multi port PCI I/O cards.
1784 # Network interfaces:
1786 # MII bus support is required for many PCI Ethernet NICs,
1787 # namely those which use MII-compliant transceivers or implement
1788 # transceiver control interfaces that operate like an MII. Adding
1789 # "device miibus" to the kernel config pulls in support for the generic
1790 # miibus API, the common support for bit-bang'ing the MII and all
1791 # of the PHY drivers, including a generic one for PHYs that aren't
1792 # specifically handled by an individual driver. Support for specific
1793 # PHYs may be built by adding "device mii", "device mii_bitbang" if
1794 # needed by the NIC driver and then adding the appropriate PHY driver.
1795 device mii # Minimal MII support
1796 device mii_bitbang # Common module for bit-bang'ing the MII
1797 device miibus # MII support w/ bit-bang'ing and all PHYs
1799 device acphy # Altima Communications AC101
1800 device amphy # AMD AM79c873 / Davicom DM910{1,2}
1801 device atphy # Attansic/Atheros F1
1802 device axphy # Asix Semiconductor AX88x9x
1803 device bmtphy # Broadcom BCM5201/BCM5202 and 3Com 3c905C
1804 device bnxt # Broadcom NetXtreme-C/NetXtreme-E
1805 device brgphy # Broadcom BCM54xx/57xx 1000baseTX
1806 device cgem # Cadence GEM Gigabit Ethernet
1807 device ciphy # Cicada/Vitesse CS/VSC8xxx
1808 device e1000phy # Marvell 88E1000 1000/100/10-BT
1809 device gentbi # Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
1810 device icsphy # ICS ICS1889-1893
1811 device ip1000phy # IC Plus IP1000A/IP1001
1812 device jmphy # JMicron JMP211/JMP202
1813 device lxtphy # Level One LXT-970
1814 device nsgphy # NatSemi DP8361/DP83865/DP83891
1815 device nsphy # NatSemi DP83840A
1816 device nsphyter # NatSemi DP83843/DP83815
1817 device pnaphy # HomePNA
1818 device qsphy # Quality Semiconductor QS6612
1819 device rdcphy # RDC Semiconductor R6040
1820 device rgephy # RealTek 8169S/8110S/8211B/8211C
1821 device rlphy # RealTek 8139
1822 device rlswitch # RealTek 8305
1823 device smcphy # SMSC LAN91C111
1824 device tdkphy # TDK 89Q2120
1825 device truephy # LSI TruePHY
1826 device xmphy # XaQti XMAC II
1828 # an: Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
1829 # PCI and ISA varieties.
1830 # ae: Support for gigabit ethernet adapters based on the Attansic/Atheros
1831 # L2 PCI-Express FastEthernet controllers.
1832 # age: Support for gigabit ethernet adapters based on the Attansic/Atheros
1833 # L1 PCI express gigabit ethernet controllers.
1834 # alc: Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
1835 # ale: Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
1836 # ath: Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
1837 # bce: Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
1839 # bfe: Broadcom BCM4401 Ethernet adapter.
1840 # bge: Support for gigabit ethernet adapters based on the Broadcom
1841 # BCM570x family of controllers, including the 3Com 3c996-T,
1842 # the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1843 # the embedded gigE NICs on Dell PowerEdge 2550 servers.
1844 # bnxt: Broadcom NetXtreme-C and NetXtreme-E PCIe 10/25/50G Ethernet adapters.
1845 # bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
1847 # bwi: Broadcom BCM430* and BCM431* family of wireless adapters.
1848 # bwn: Broadcom BCM43xx family of wireless adapters.
1849 # cas: Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
1850 # cxgb: Chelsio T3 based 1GbE/10GbE PCIe Ethernet adapters.
1851 # cxgbe:Chelsio T4, T5, and T6-based 1/10/25/40/100GbE PCIe Ethernet
1853 # cxgbev: Chelsio T4, T5, and T6-based PCIe Virtual Functions.
1854 # dc: Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1855 # and various workalikes including:
1856 # the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1857 # AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1858 # 82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1859 # and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1860 # replaces the old al, ax, dm, pn and mx drivers. List of brands:
1861 # Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1862 # SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1863 # LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1865 # em: Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1866 # fxp: Intel EtherExpress Pro/100B
1867 # (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
1868 # gem: Apple GMAC/Sun ERI/Sun GEM
1869 # jme: JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
1870 # le: AMD Am7900 LANCE and Am79C9xx PCnet
1871 # lge: Support for PCI gigabit ethernet adapters based on the Level 1
1872 # LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1873 # SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1874 # lio: Support for Cavium 23XX Ethernet adapters
1875 # malo: Marvell Libertas wireless NICs.
1876 # mwl: Marvell 88W8363 802.11n wireless NICs.
1877 # Requires the mwl firmware module
1878 # mwlfw: Marvell 88W8363 firmware
1879 # msk: Support for gigabit ethernet adapters based on the Marvell/SysKonnect
1880 # Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
1881 # 88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
1882 # 88E8055, 88E8056 and D-Link 560T/550SX.
1883 # mlxfw: Mellanox firmware update module.
1884 # mlx5: Mellanox ConnectX-4 and ConnectX-4 LX IB and Eth shared code module.
1885 # mlx5en:Mellanox ConnectX-4 and ConnectX-4 LX PCIe Ethernet adapters.
1886 # my: Myson Fast Ethernet (MTD80X, MTD89X)
1887 # nge: Support for PCI gigabit ethernet adapters based on the National
1888 # Semiconductor DP83820 and DP83821 chipset. This includes the
1889 # SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
1890 # GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
1891 # EP-320G-TX and the Netgear GA622T.
1892 # oce: Emulex 10 Gbit adapters (OneConnect Ethernet)
1893 # ral: Ralink Technology IEEE 802.11 wireless adapter
1894 # re: RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
1895 # rl: Support for PCI fast ethernet adapters based on the RealTek 8129/8139
1896 # chipset. Note that the RealTek driver defaults to using programmed
1897 # I/O to do register accesses because memory mapped mode seems to cause
1898 # severe lockups on SMP hardware. This driver also supports the
1899 # Accton EN1207D `Cheetah' adapter, which uses a chip called
1900 # the MPX 5030/5038, which is either a RealTek in disguise or a
1901 # RealTek workalike. Note that the D-Link DFE-530TX+ uses the RealTek
1902 # chipset and is supported by this driver, not the 'vr' driver.
1903 # rtwn: RealTek wireless adapters.
1904 # rtwnfw: RealTek wireless firmware.
1905 # sge: Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
1906 # sis: Support for NICs based on the Silicon Integrated Systems SiS 900,
1907 # SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
1908 # sk: Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
1909 # This includes the SK-9841 and SK-9842 single port cards (single mode
1910 # and multimode fiber) and the SK-9843 and SK-9844 dual port cards
1911 # (also single mode and multimode).
1912 # The driver will autodetect the number of ports on the card and
1913 # attach each one as a separate network interface.
1914 # ste: Sundance Technologies ST201 PCI fast ethernet controller, includes
1915 # the D-Link DFE-550TX.
1916 # stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
1917 # TC9021 family of controllers, including the Sundance ST2021/ST2023,
1918 # the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
1919 # ti: Support for PCI gigabit ethernet NICs based on the Alteon Networks
1920 # Tigon 1 and Tigon 2 chipsets. This includes the Alteon AceNIC, the
1921 # 3Com 3c985, the Netgear GA620 and various others. Note that you will
1922 # probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
1923 # vr: Support for various fast ethernet adapters based on the VIA
1924 # Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
1925 # including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
1926 # DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
1927 # vte: DM&P Vortex86 RDC R6040 Fast Ethernet
1928 # xl: Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
1929 # Etherlink XL cards and integrated controllers. This includes the
1930 # integrated 3c905B-TX chips in certain Dell Optiplex and Dell
1931 # Precision desktop machines and the integrated 3c905-TX chips
1932 # in Dell Latitude laptop docking stations.
1933 # Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
1935 # Order for ISA devices is important here
1939 # PCI Ethernet NICs that use the common MII bus controller code.
1940 device ae # Attansic/Atheros L2 FastEthernet
1941 device age # Attansic/Atheros L1 Gigabit Ethernet
1942 device alc # Atheros AR8131/AR8132 Ethernet
1943 device ale # Atheros AR8121/AR8113/AR8114 Ethernet
1944 device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet
1945 device bfe # Broadcom BCM440x 10/100 Ethernet
1946 device bge # Broadcom BCM570xx Gigabit Ethernet
1947 device cas # Sun Cassini/Cassini+ and NS DP83065 Saturn
1948 device dc # DEC/Intel 21143 and various workalikes
1949 device et # Agere ET1310 10/100/Gigabit Ethernet
1950 device fxp # Intel EtherExpress PRO/100B (82557, 82558)
1951 envvar hint.fxp.0.prefer_iomap="0"
1952 device gem # Apple GMAC/Sun ERI/Sun GEM
1953 device jme # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
1954 device lge # Level 1 LXT1001 gigabit Ethernet
1955 device mlxfw # Mellanox firmware update module
1956 device mlx5 # Shared code module between IB and Ethernet
1957 device mlx5en # Mellanox ConnectX-4 and ConnectX-4 LX
1958 device msk # Marvell/SysKonnect Yukon II Gigabit Ethernet
1959 device my # Myson Fast Ethernet (MTD80X, MTD89X)
1960 device nge # NatSemi DP83820 gigabit Ethernet
1961 device re # RealTek 8139C+/8169/8169S/8110S
1962 device rl # RealTek 8129/8139
1963 device sge # Silicon Integrated Systems SiS190/191
1964 device sis # Silicon Integrated Systems SiS 900/SiS 7016
1965 device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
1966 device ste # Sundance ST201 (D-Link DFE-550TX)
1967 device stge # Sundance/Tamarack TC9021 gigabit Ethernet
1968 device vr # VIA Rhine, Rhine II
1969 device vte # DM&P Vortex86 RDC R6040 Fast Ethernet
1970 device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
1972 # PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
1974 device em # Intel Pro/1000 Gigabit Ethernet
1975 device ix # Intel Pro/10Gbe PCIE Ethernet
1976 device ixv # Intel Pro/10Gbe PCIE Ethernet VF
1978 # PCI Ethernet NICs.
1979 device cxgb # Chelsio T3 10 Gigabit Ethernet
1980 device cxgb_t3fw # Chelsio T3 10 Gigabit Ethernet firmware
1981 device cxgbe # Chelsio T4-T6 1/10/25/40/100 Gigabit Ethernet
1982 device cxgbev # Chelsio T4-T6 Virtual Functions
1983 device le # AMD Am7900 LANCE and Am79C9xx PCnet
1984 device mxge # Myricom Myri-10G 10GbE NIC
1985 device oce # Emulex 10 GbE (OneConnect Ethernet)
1986 device ti # Alteon Networks Tigon I/II gigabit Ethernet
1988 # PCI IEEE 802.11 Wireless NICs
1989 device ath # Atheros pci/cardbus NIC's
1990 device ath_hal # pci/cardbus chip support
1991 #device ath_ar5210 # AR5210 chips
1992 #device ath_ar5211 # AR5211 chips
1993 #device ath_ar5212 # AR5212 chips
2000 #device ath_ar5416 # AR5416 chips
2001 # All of the AR5212 parts have a problem when paired with the AR71xx
2002 # CPUS. These parts have a bug that triggers a fatal bus error on the AR71xx
2003 # only. Details of the exact nature of the bug are sketchy, but some can be
2004 # found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
2005 # 6. This option enables this workaround. There is a performance penalty
2006 # for this work around, but without it things don't work at all. The DMA
2007 # from the card usually bursts 128 bytes, but on the affected CPUs, only
2009 options AH_RXCFG_SDMAMW_4BYTES
2010 #device ath_ar9160 # AR9160 chips
2011 #device ath_ar9280 # AR9280 chips
2012 #device ath_ar9285 # AR9285 chips
2013 device ath_rate_sample # SampleRate tx rate control for ath
2014 device bwi # Broadcom BCM430* BCM431*
2015 device bwn # Broadcom BCM43xx
2016 device malo # Marvell Libertas wireless NICs.
2017 device mwl # Marvell 88W8363 802.11n wireless NICs.
2019 device ral # Ralink Technology RT2500 wireless NICs.
2020 device rtwn # Realtek wireless NICs
2023 # Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
2024 #options TI_SF_BUF_JUMBO
2025 # Turn on the header splitting option for the ti(4) driver firmware. This
2026 # only works for Tigon II chips, and has no effect for Tigon I chips.
2027 # This option requires the TI_SF_BUF_JUMBO option above.
2028 #options TI_JUMBO_HDRSPLIT
2030 # These two options allow manipulating the mbuf cluster size and mbuf size,
2031 # respectively. Be very careful with NIC driver modules when changing
2032 # these from their default values, because that can potentially cause a
2033 # mismatch between the mbuf size assumed by the kernel and the mbuf size
2034 # assumed by a module. The only driver that currently has the ability to
2035 # detect a mismatch is ti(4).
2036 options MCLSHIFT=11 # mbuf cluster shift in bits, 11 == 2KB
2037 options MSIZE=256 # mbuf size in bytes
2042 # sound: The generic sound driver.
2048 # snd_*: Device-specific drivers.
2050 # The flags of the device tell the device a bit more info about the
2051 # device that normally is obtained through the PnP interface.
2052 # bit 2..0 secondary DMA channel;
2053 # bit 4 set if the board uses two dma channels;
2054 # bit 15..8 board type, overrides autodetection; leave it
2055 # zero if don't know what to put in (and you don't,
2056 # since this is unsupported at the moment...).
2058 # snd_ad1816: Analog Devices AD1816 ISA PnP/non-PnP.
2059 # snd_als4000: Avance Logic ALS4000 PCI.
2060 # snd_atiixp: ATI IXP 200/300/400 PCI.
2061 # snd_cmi: CMedia CMI8338/CMI8738 PCI.
2062 # snd_cs4281: Crystal Semiconductor CS4281 PCI.
2063 # snd_csa: Crystal Semiconductor CS461x/428x PCI. (except
2065 # snd_ds1: Yamaha DS-1 PCI.
2066 # snd_emu10k1: Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
2067 # snd_emu10kx: Creative SoundBlaster Live! and Audigy
2068 # snd_envy24: VIA Envy24 and compatible, needs snd_spicds.
2069 # snd_envy24ht: VIA Envy24HT and compatible, needs snd_spicds.
2070 # snd_es137x: Ensoniq AudioPCI ES137x PCI.
2071 # snd_ess: Ensoniq ESS ISA PnP/non-PnP, to be used in
2072 # conjunction with snd_sbc.
2073 # snd_fm801: Forte Media FM801 PCI.
2074 # snd_gusc: Gravis UltraSound ISA PnP/non-PnP.
2075 # snd_hda: Intel High Definition Audio (Controller) and
2077 # snd_hdspe: RME HDSPe AIO and RayDAT.
2078 # snd_ich: Intel ICH AC'97 and some more audio controllers
2079 # embedded in a chipset, for example nVidia
2080 # nForce controllers.
2081 # snd_maestro: ESS Technology Maestro-1/2x PCI.
2082 # snd_maestro3: ESS Technology Maestro-3/Allegro PCI.
2083 # snd_mss: Microsoft Sound System ISA PnP/non-PnP.
2084 # snd_neomagic: Neomagic 256 AV/ZX PCI.
2085 # snd_sb16: Creative SoundBlaster16, to be used in
2086 # conjunction with snd_sbc.
2087 # snd_sb8: Creative SoundBlaster (pre-16), to be used in
2088 # conjunction with snd_sbc.
2089 # snd_sbc: Creative SoundBlaster ISA PnP/non-PnP.
2090 # Supports ESS and Avance ISA chips as well.
2091 # snd_solo: ESS Solo-1x PCI.
2092 # snd_spicds: SPI codec driver, needed by Envy24/Envy24HT drivers.
2093 # snd_t4dwave: Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
2095 # snd_uaudio: USB audio.
2096 # snd_via8233: VIA VT8233x PCI.
2097 # snd_via82c686: VIA VT82C686A PCI.
2098 # snd_vibes: S3 Sonicvibes PCI.
2130 device snd_via82c686
2133 # For non-PnP sound cards:
2134 envvar hint.pcm.0.at="isa"
2135 envvar hint.pcm.0.irq="10"
2136 envvar hint.pcm.0.drq="1"
2137 envvar hint.pcm.0.flags="0x0"
2138 envvar hint.sbc.0.at="isa"
2139 envvar hint.sbc.0.port="0x220"
2140 envvar hint.sbc.0.irq="5"
2141 envvar hint.sbc.0.drq="1"
2142 envvar hint.sbc.0.flags="0x15"
2143 envvar hint.gusc.0.at="isa"
2144 envvar hint.gusc.0.port="0x220"
2145 envvar hint.gusc.0.irq="5"
2146 envvar hint.gusc.0.drq="1"
2147 envvar hint.gusc.0.flags="0x13"
2150 # Following options are intended for debugging/testing purposes:
2152 # SND_DEBUG Enable extra debugging code that includes
2153 # sanity checking and possible increase of
2156 # SND_DIAGNOSTIC Similar in a spirit of INVARIANTS/DIAGNOSTIC,
2157 # zero tolerance against inconsistencies.
2159 # SND_FEEDER_MULTIFORMAT By default, only 16/32 bit feeders are compiled
2160 # in. This options enable most feeder converters
2161 # except for 8bit. WARNING: May bloat the kernel.
2163 # SND_FEEDER_FULL_MULTIFORMAT Ditto, but includes 8bit feeders as well.
2165 # SND_FEEDER_RATE_HP (feeder_rate) High precision 64bit arithmetic
2166 # as much as possible (the default trying to
2167 # avoid it). Possible slowdown.
2169 # SND_PCM_64 (Only applicable for i386/32bit arch)
2170 # Process 32bit samples through 64bit
2171 # integer/arithmetic. Slight increase of dynamic
2172 # range at a cost of possible slowdown.
2174 # SND_OLDSTEREO Only 2 channels are allowed, effectively
2175 # disabling multichannel processing.
2178 options SND_DIAGNOSTIC
2179 options SND_FEEDER_MULTIFORMAT
2180 options SND_FEEDER_FULL_MULTIFORMAT
2181 options SND_FEEDER_RATE_HP
2183 options SND_OLDSTEREO
2186 # PC Card/PCMCIA and Cardbus
2188 # cbb: pci/cardbus bridge implementing YENTA interface
2189 # pccard: pccard slots
2190 # cardbus: cardbus slots
2199 # mmcsd MMC/SD memory card
2200 # sdhci Generic PCI SD Host Controller
2201 # rtsx Realtek SD card reader (RTS5209, RTS5227, ...)
2210 # System Management Bus support is provided by the 'smbus' device.
2211 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
2212 # which is a child of the 'smbus' device.
2214 # Supported devices:
2215 # smb standard I/O through /dev/smb*
2217 # Supported SMB interfaces:
2218 # iicsmb I2C to SMB bridge with any iicbus interface
2219 # intpm Intel PIIX4 (82371AB, 82443MX) Power Management Unit
2220 # alpm Acer Aladdin-IV/V/Pro2 Power Management Unit
2221 # ichsmb Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
2222 # viapm VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2223 # amdpm AMD 756 Power Management Unit
2224 # amdsmb AMD 8111 SMBus 2.0 Controller
2225 # nfpm NVIDIA nForce Power Management Unit
2226 # nfsmb NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
2227 # ismt Intel SMBus 2.0 controller chips (on Atom S1200, C2000)
2229 device smbus # Bus support, required for smb below.
2243 # SMBus peripheral devices
2245 # jedec_dimm Asset and temperature reporting for DDR3 and DDR4 DIMMs
2251 # Philips i2c bus support is provided by the `iicbus' device.
2253 # Supported devices:
2254 # ic i2c network interface
2255 # iic i2c standard io
2256 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
2257 # iicoc simple polling driver for OpenCores I2C controller
2260 # iicbb generic I2C bit-banging code (needed by lpbb)
2262 device iicbus # Bus support, required for ic/iic/iicsmb below.
2263 device iicbb # bitbang driver; implements i2c on a pair of gpio pins
2266 device iic # userland access to i2c slave devices via ioctl(8)
2267 device iicsmb # smb over i2c bridge
2268 device iicoc # OpenCores I2C controller support
2270 # I2C bus multiplexer (mux) devices
2271 device iicmux # i2c mux core driver
2272 device iic_gpiomux # i2c mux hardware controlled via gpio pins
2273 device ltc430x # LTC4305 and LTC4306 i2c mux chips
2275 # I2C peripheral devices
2277 device ad7418 # Analog Devices temp and voltage sensor
2278 device ads111x # Texas Instruments ADS101x and ADS111x ADCs
2279 device ds1307 # Dallas DS1307 RTC and compatible
2280 device ds13rtc # All Dallas/Maxim ds13xx chips
2281 device ds1672 # Dallas DS1672 RTC
2282 device ds3231 # Dallas DS3231 RTC + temperature
2283 device icee # AT24Cxxx and compatible EEPROMs
2284 device isl12xx # Intersil ISL12xx RTC
2285 device lm75 # LM75 compatible temperature sensor
2286 device nxprtc # NXP RTCs: PCA/PFC212x PCA/PCF85xx
2287 device rtc8583 # Epson RTC-8583
2288 device s35390a # Seiko Instruments S-35390A RTC
2289 device sy8106a # Silergy Corp. SY8106A buck regulator
2290 device syr827 # Silergy Corp. DC/DC regulator
2294 # Parallel port bus support is provided by the `ppbus' device.
2295 # Multiple devices may be attached to the parallel port, devices
2296 # are automatically probed and attached when found.
2298 # Supported devices:
2299 # lpt Parallel Printer
2300 # plip Parallel network interface
2301 # ppi General-purpose I/O ("Geek Port") + IEEE1284 I/O
2302 # pps Pulse per second Timing Interface
2303 # lpbb Philips official parallel port I2C bit-banging interface
2304 # pcfclock Parallel port clock driver.
2306 # Supported interfaces:
2307 # ppc ISA-bus parallel port interfaces.
2310 options PPC_PROBE_CHIPSET # Enable chipset specific detection
2311 # (see flags in ppc(4))
2312 options DEBUG_1284 # IEEE1284 signaling protocol debug
2313 options PERIPH_1284 # Makes your computer act as an IEEE1284
2314 # compliant peripheral
2315 options DONTPROBE_1284 # Avoid boot detection of PnP parallel devices
2316 options LPT_DEBUG # Printer driver debug
2317 options PPC_DEBUG # Parallel chipset level debug
2318 options PLIP_DEBUG # Parallel network IP interface debug
2319 options PCFCLOCK_VERBOSE # Verbose pcfclock driver
2320 options PCFCLOCK_MAX_RETRIES=5 # Maximum read tries (default 10)
2323 envvar hint.ppc.0.at="isa"
2324 envvar hint.ppc.0.irq="7"
2333 # General Purpose I/O pins
2334 device dwgpio # Synopsys DesignWare APB GPIO Controller
2335 device gpio # gpio interfaces and bus support
2336 device gpiobacklight # sysctl control of gpio-based backlight
2337 device gpioiic # i2c via gpio bitbang
2338 device gpiokeys # kbd(4) glue for gpio-based key input
2339 device gpioled # led(4) gpio glue
2340 device gpiopower # event handler for gpio-based powerdown
2341 device gpiopps # Pulse per second input from gpio pin
2342 device gpioregulator # extres/regulator glue for gpio pin
2343 device gpiospi # SPI via gpio bitbang
2344 device gpioths # 1-wire temp/humidity sensor on gpio pin
2346 # Pulse width modulation
2347 device pwmbus # pwm interface and bus support
2348 device pwmc # userland control access to pwm outputs
2351 # Etherswitch framework and drivers
2353 # etherswitch The etherswitch(4) framework
2354 # miiproxy Proxy device for miibus(4) functionality
2356 # Switch hardware support:
2357 # arswitch Atheros switches
2358 # ip17x IC+ 17x family switches
2359 # rtl8366r Realtek RTL8366 switches
2360 # ukswitch Multi-PHY switches
2369 # Kernel BOOTP support
2371 options BOOTP # Use BOOTP to obtain IP address/hostname
2372 # Requires NFSCL and NFS_ROOT
2373 options BOOTP_NFSROOT # NFS mount root filesystem using BOOTP info
2374 options BOOTP_NFSV3 # Use NFS v3 to NFS mount root
2375 options BOOTP_COMPAT # Workaround for broken bootp daemons.
2376 options BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2377 options BOOTP_BLOCKSIZE=8192 # Override NFS block size
2380 # Enable software watchdog routines, even if hardware watchdog is present.
2381 # By default, software watchdog timer is enabled only if no hardware watchdog
2387 # Add the software deadlock resolver thread.
2392 # Disable swapping of stack pages. This option removes all
2393 # code which actually performs swapping, so it's not possible to turn
2394 # it back on at run-time.
2396 # This is sometimes usable for systems which don't have any swap space
2397 # (see also sysctl "vm.disable_swapspace_pageouts")
2399 #options NO_SWAPPING
2401 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
2402 # for sendfile(2) that are used to map file VM pages, and normally
2403 # default to a quantity that is roughly 16*MAXUSERS+512. You would
2404 # typically want about 4 of these for each simultaneous file send.
2406 options NSFBUFS=1024
2409 # Enable extra debugging code for locks. This stores the filename and
2410 # line of whatever acquired the lock in the lock itself, and changes a
2411 # number of function calls to pass around the relevant data. This is
2412 # not at all useful unless you are debugging lock code. Note that
2413 # modules should be recompiled as this option modifies KBI.
2417 #####################################################################
2419 device hid # Generic HID support
2420 options HID_DEBUG # enable debug msgs
2421 device hidbus # HID bus
2422 device hidmap # HID to evdev mapping
2423 device hidraw # Raw access driver
2424 options HIDRAW_MAKE_UHID_ALIAS # install /dev/uhid alias
2425 device hconf # Multitouch configuration TLC
2426 device hcons # Consumer controls
2427 device hgame # Generic game controllers
2428 device hkbd # HID keyboard
2429 device hms # HID mouse
2430 device hmt # HID multitouch (MS-compatible)
2431 device hpen # Generic pen driver
2432 device hsctrl # System controls
2433 device ps4dshock # Sony PS4 DualShock 4 gamepad driver
2434 device xb360gp # XBox 360 gamepad driver
2436 #####################################################################
2448 # General USB code (mandatory for USB)
2451 # USB Double Bulk Pipe devices
2453 # USB temperature meter
2457 # Human Interface Device (anything with buttons and dials)
2463 # USB mass storage driver (Requires scbus and da)
2465 # USB mass storage driver for device-side mode
2467 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
2476 # eGalax USB touch screen
2478 # Diamond Rio 500 MP3 player
2480 # HID-over-USB driver
2484 # USB serial support
2486 # USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
2488 # USB support for Technologies ARK3116 based serial adapters
2490 # USB support for Belkin F5U103 and compatible serial adapters
2492 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
2494 # USB support for some Windows CE based serial communication.
2496 # USB support for Prolific PL-2303 serial adapters
2498 # USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
2500 # USB Visor and Palm devices
2502 # USB serial support for DDI pocket's PHS
2505 # USB ethernet support
2507 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
2508 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2509 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2513 # ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2514 # LinkSys USB200M and various other adapters.
2516 # ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
2520 # Devices which communicate using Ethernet over USB, particularly
2521 # Communication Device Class (CDC) Ethernet specification. Supports
2522 # Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
2525 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
2526 # and Netmate II, and the Belkin F5U111.
2529 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2530 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2531 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
2532 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
2533 # and 2104USB, and the Corega USB-T.
2536 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
2537 # and the GREEN HOUSE GH-USB100B.
2540 # Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2543 # RealTek RTL8152/RTL8153 USB Ethernet driver
2546 # Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
2549 # HSxPA devices from Option N.V
2552 # Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
2555 # Ralink Technology RT2501USB/RT2601USB wireless driver
2557 # Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
2560 # Atheros AR5523 wireless driver
2563 # Conexant/Intersil PrismGT wireless driver
2566 # Ralink Technology RT2500USB wireless driver
2569 # RNDIS USB ethernet driver
2571 # Realtek RTL8187B/L wireless driver
2574 # ZyDas ZD1211/ZD1211B wireless driver
2577 # Sierra USB wireless driver
2581 # debugging options for the USB subsystem
2587 options UKBD_DFLT_KEYMAP # specify the built-in keymap
2588 makeoptions UKBD_DFLT_KEYMAP=jp.106
2590 # options for uplcom:
2591 options UPLCOM_INTR_INTERVAL=100 # interrupt pipe interval
2594 # options for uvscom:
2595 options UVSCOM_DEFAULT_OPKTSIZE=8 # default output packet size
2596 options UVSCOM_INTR_INTERVAL=100 # interrupt pipe interval
2599 #####################################################################
2602 device firewire # FireWire bus code
2603 device sbp # SCSI over Firewire (Requires scbus and da)
2604 device sbp_targ # SBP-2 Target mode (Requires scbus and targ)
2605 device fwe # Ethernet over FireWire (non-standard!)
2606 device fwip # IP over FireWire (RFC2734 and RFC3146)
2608 #####################################################################
2609 # dcons support (Dumb Console Device)
2611 device dcons # dumb console driver
2612 device dcons_crom # FireWire attachment
2613 options DCONS_BUF_SIZE=16384 # buffer size
2614 options DCONS_POLL_HZ=100 # polling rate
2615 options DCONS_FORCE_CONSOLE=0 # force to be the primary console
2616 options DCONS_FORCE_GDB=1 # force to be the gdb device
2618 #####################################################################
2621 # This is a port of the OpenBSD crypto framework. Include this when
2622 # configuring IPSEC and when you have a h/w crypto device to accelerate
2623 # user applications that link to OpenSSL.
2625 # Drivers are ports from OpenBSD with some simple enhancements that have
2626 # been fed back to OpenBSD.
2628 device crypto # core crypto support
2630 # Only install the cryptodev device if you are running tests, or know
2631 # specifically why you need it. In most cases, it is not needed and
2632 # will make things slower.
2633 device cryptodev # /dev/crypto for access to h/w
2635 device rndtest # FIPS 140-2 entropy tester
2637 device ccr # Chelsio T6
2639 device hifn # Hifn 7951, 7781, etc.
2640 options HIFN_DEBUG # enable debugging support: hw.hifn.debug
2641 options HIFN_RNDTEST # enable rndtest support
2643 #####################################################################
2647 # Embedded system options:
2649 # An embedded system might want to run something other than init.
2650 options INIT_PATH=/sbin/init:/rescue/init
2653 options BUS_DEBUG # enable newbus debugging
2654 options DEBUG_VFS_LOCKS # enable VFS lock debugging
2655 options SOCKBUF_DEBUG # enable sockbuf last record/mb tail checking
2656 options IFMEDIA_DEBUG # enable debugging in net/if_media.c
2661 # Make the SYSINIT process performed by mi_startup() verbose. This is very
2662 # useful when porting to a new architecture. If DDB is also enabled, this
2663 # will print function names instead of addresses. If defined with a value
2664 # of zero, the verbose code is compiled-in but disabled by default, and can
2665 # be enabled with the debug.verbose_sysinit=1 tunable.
2666 options VERBOSE_SYSINIT
2668 #####################################################################
2669 # SYSV IPC KERNEL PARAMETERS
2671 # Maximum number of System V semaphores that can be used on the system at
2675 # Total number of semaphores system wide
2678 # Total number of undo structures in system
2681 # Maximum number of System V semaphores that can be used by a single process
2685 # Maximum number of operations that can be outstanding on a single System V
2686 # semaphore at one time.
2689 # Maximum number of undo operations that can be outstanding on a single
2690 # System V semaphore at one time.
2693 # Maximum number of shared memory pages system wide.
2696 # Maximum size, in bytes, of a single System V shared memory region.
2697 options SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2698 options SHMMAXPGS=1025
2700 # Minimum size, in bytes, of a single System V shared memory region.
2703 # Maximum number of shared memory regions that can be used on the system
2707 # Maximum number of System V shared memory regions that can be attached to
2708 # a single process at one time.
2711 # Set the amount of time (in seconds) the system will wait before
2712 # rebooting automatically when a kernel panic occurs. If set to (-1),
2713 # the system will wait indefinitely until a key is pressed on the
2715 options PANIC_REBOOT_WAIT_TIME=16
2717 # Attempt to bypass the buffer cache and put data directly into the
2718 # userland buffer for read operation when O_DIRECT flag is set on the
2719 # file. Both offset and length of the read operation must be
2720 # multiples of the physical media sector size.
2724 # Specify a lower limit for the number of swap I/O buffers. They are
2725 # (among other things) used when bypassing the buffer cache due to
2726 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
2728 options NSWBUF_MIN=120
2730 #####################################################################
2732 # More undocumented options for linting.
2733 # Note that documenting these is not considered an affront.
2735 options CAM_DEBUG_DELAY
2739 # Kernel filelock debugging.
2742 # System V compatible message queues
2743 # Please note that the values provided here are used to test kernel
2744 # building. The defaults in the sources provide almost the same numbers.
2745 # MSGSSZ must be a power of 2 between 8 and 1024.
2746 options MSGMNB=2049 # Max number of chars in queue
2747 options MSGMNI=41 # Max number of message queue identifiers
2748 options MSGSEG=2049 # Max number of message segments
2749 options MSGSSZ=16 # Size of a message segment
2750 options MSGTQL=41 # Max number of messages in system
2752 options NBUF=512 # Number of buffer headers
2754 options SC_DEBUG_LEVEL=5 # Syscons debug level
2755 options SC_RENDER_DEBUG # syscons rendering debugging
2757 options VFS_BIO_DEBUG # VFS buffer I/O debugging
2759 options KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
2760 options KSTACK_USAGE_PROF
2762 # Adaptec Array Controller driver options
2763 options AAC_DEBUG # Debugging levels:
2764 # 0 - quiet, only emit warnings
2765 # 1 - noisy, emit major function
2766 # points and things done
2767 # 2 - extremely noisy, emit trace
2768 # items in loops, etc.
2770 # Resource Accounting
2776 # Yet more undocumented options for linting.
2777 options MAXFILES=999
2779 # Random number generator
2780 # Alternative algorithm.
2781 #options RANDOM_FENESTRASX
2782 # Allow the CSPRNG algorithm to be loaded as a module.
2783 #options RANDOM_LOADABLE
2784 # Select this to allow high-rate but potentially expensive
2785 # harvesting of Slab-Allocator entropy. In very high-rate
2786 # situations the value of doing this is dubious at best.
2787 options RANDOM_ENABLE_UMA # slab allocator
2789 # Select this to allow high-rate but potentially expensive
2790 # harvesting of of the m_next pointer in the mbuf. Note that
2791 # the m_next pointer is NULL except when receiving > 4K
2792 # jumbo frames or sustained bursts by way of LRO. Thus in
2793 # the common case it is stirring zero in to the entropy
2794 # pool. In cases where it is not NULL it is pointing to one
2795 # of a small (in the thousands to 10s of thousands) number
2796 # of 256 byte aligned mbufs. Hence it is, even in the best
2797 # case, a poor source of entropy. And in the absence of actual
2798 # runtime analysis of entropy collection may mislead the user in
2799 # to believe that substantially more entropy is being collected
2800 # than in fact is - leading to a different class of security
2801 # risk. In high packet rate situations ethernet entropy
2802 # collection is also very expensive, possibly leading to as
2803 # much as a 50% drop in packets received.
2804 # This option is present to maintain backwards compatibility
2805 # if desired, however it cannot be recommended for use in any
2807 options RANDOM_ENABLE_ETHER # ether_input
2809 # Module to enable execution of application via emulators like QEMU
2810 options IMAGACT_BINMISC
2812 # zlib I/O stream support
2813 # This enables support for compressed core dumps.
2817 # This enables support for Zstd compressed core dumps, GEOM_UZIP images,
2818 # and is required by zfs if statically linked.
2822 options BHND_LOGLEVEL # Logging threshold level
2825 device evdev # input event device support
2826 options EVDEV_SUPPORT # evdev support in legacy drivers
2827 options EVDEV_DEBUG # enable event debug msgs
2828 device uinput # install /dev/uinput cdev
2829 options UINPUT_DEBUG # enable uinput debug msgs
2831 # Encrypted kernel crash dumps.
2834 # Serial Peripheral Interface (SPI) support.
2835 device spibus # Bus support.
2836 device at45d # DataFlash driver
2838 device mx25l # SPIFlash driver
2840 device spigen # Generic access to SPI devices from userland.
2841 # Enable legacy /dev/spigenN name aliases for /dev/spigenX.Y devices.
2842 options SPIGEN_LEGACY_CDEVNAME # legacy device names for spigen
2844 # Compression supports.
2845 device zlib # gzip/zlib compression/decompression library
2846 device xz # xz_embedded LZMA de-compression library
2848 # Kernel support for stats(3).