The Design and Implementation of the FreeBSD Operating System, Second Edition
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sys/conf/NOTES

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    1 # $FreeBSD: releng/10.3/sys/conf/NOTES 293675 2016-01-11 17:53:24Z jimharris $
    2 #
    3 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
    4 #
    5 # Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
    6 # 'makeoptions', 'hints', etc. go into the kernel configuration that you
    7 # run config(8) with.
    8 #
    9 # Lines that begin with 'hint.' are NOT for config(8), they go into your
   10 # hints file.  See /boot/device.hints and/or the 'hints' config(8) directive.
   11 #
   12 # Please use ``make LINT'' to create an old-style LINT file if you want to
   13 # do kernel test-builds.
   14 #
   15 # This file contains machine independent kernel configuration notes.  For
   16 # machine dependent notes, look in /sys/<arch>/conf/NOTES.
   17 #
   18 
   19 #
   20 # NOTES conventions and style guide:
   21 #
   22 # Large block comments should begin and end with a line containing only a
   23 # comment character.
   24 #
   25 # To describe a particular object, a block comment (if it exists) should
   26 # come first.  Next should come device, options, and hints lines in that
   27 # order.  All device and option lines must be described by a comment that
   28 # doesn't just expand the device or option name.  Use only a concise
   29 # comment on the same line if possible.  Very detailed descriptions of
   30 # devices and subsystems belong in man pages.
   31 #
   32 # A space followed by a tab separates 'options' from an option name.  Two
   33 # spaces followed by a tab separate 'device' from a device name.  Comments
   34 # after an option or device should use one space after the comment character.
   35 # To comment out a negative option that disables code and thus should not be
   36 # enabled for LINT builds, precede 'options' with "#!".
   37 #
   38 
   39 #
   40 # This is the ``identification'' of the kernel.  Usually this should
   41 # be the same as the name of your kernel.
   42 #
   43 ident           LINT
   44 
   45 #
   46 # The `maxusers' parameter controls the static sizing of a number of
   47 # internal system tables by a formula defined in subr_param.c.
   48 # Omitting this parameter or setting it to 0 will cause the system to
   49 # auto-size based on physical memory.
   50 #
   51 maxusers        10
   52 
   53 # To statically compile in device wiring instead of /boot/device.hints
   54 #hints          "LINT.hints"            # Default places to look for devices.
   55 
   56 # Use the following to compile in values accessible to the kernel
   57 # through getenv() (or kenv(1) in userland). The format of the file
   58 # is 'variable=value', see kenv(1)
   59 #
   60 #env            "LINT.env"
   61 
   62 #
   63 # The `makeoptions' parameter allows variables to be passed to the
   64 # generated Makefile in the build area.
   65 #
   66 # CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
   67 # after most other flags.  Here we use it to inhibit use of non-optimal
   68 # gcc built-in functions (e.g., memcmp).
   69 #
   70 # DEBUG happens to be magic.
   71 # The following is equivalent to 'config -g KERNELNAME' and creates
   72 # 'kernel.debug' compiled with -g debugging as well as a normal
   73 # 'kernel'.  Use 'make install.debug' to install the debug kernel
   74 # but that isn't normally necessary as the debug symbols are not loaded
   75 # by the kernel and are not useful there anyway.
   76 #
   77 # KERNEL can be overridden so that you can change the default name of your
   78 # kernel.
   79 #
   80 # MODULES_OVERRIDE can be used to limit modules built to a specific list.
   81 #
   82 makeoptions     CONF_CFLAGS=-fno-builtin  #Don't allow use of memcmp, etc.
   83 #makeoptions    DEBUG=-g                #Build kernel with gdb(1) debug symbols
   84 #makeoptions    KERNEL=foo              #Build kernel "foo" and install "/foo"
   85 # Only build ext2fs module plus those parts of the sound system I need.
   86 #makeoptions    MODULES_OVERRIDE="ext2fs sound/sound sound/driver/maestro3"
   87 makeoptions     DESTDIR=/tmp
   88 
   89 #
   90 # FreeBSD processes are subject to certain limits to their consumption
   91 # of system resources.  See getrlimit(2) for more details.  Each
   92 # resource limit has two values, a "soft" limit and a "hard" limit.
   93 # The soft limits can be modified during normal system operation, but
   94 # the hard limits are set at boot time.  Their default values are
   95 # in sys/<arch>/include/vmparam.h.  There are two ways to change them:
   96 # 
   97 # 1.  Set the values at kernel build time.  The options below are one
   98 #     way to allow that limit to grow to 1GB.  They can be increased
   99 #     further by changing the parameters:
  100 #       
  101 # 2.  In /boot/loader.conf, set the tunables kern.maxswzone,
  102 #     kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
  103 #     kern.dflssiz, kern.maxssiz and kern.sgrowsiz.
  104 #
  105 # The options in /boot/loader.conf override anything in the kernel
  106 # configuration file.  See the function init_param1 in
  107 # sys/kern/subr_param.c for more details.
  108 #
  109 
  110 options         MAXDSIZ=(1024UL*1024*1024)
  111 options         MAXSSIZ=(128UL*1024*1024)
  112 options         DFLDSIZ=(1024UL*1024*1024)
  113 
  114 #
  115 # BLKDEV_IOSIZE sets the default block size used in user block
  116 # device I/O.  Note that this value will be overridden by the label
  117 # when specifying a block device from a label with a non-0
  118 # partition blocksize.  The default is PAGE_SIZE.
  119 #
  120 options         BLKDEV_IOSIZE=8192
  121 
  122 #
  123 # MAXPHYS and DFLTPHYS
  124 #
  125 # These are the maximal and safe 'raw' I/O block device access sizes.
  126 # Reads and writes will be split into MAXPHYS chunks for known good
  127 # devices and DFLTPHYS for the rest. Some applications have better
  128 # performance with larger raw I/O access sizes. Note that certain VM
  129 # parameters are derived from these values and making them too large
  130 # can make an an unbootable kernel.
  131 #
  132 # The defaults are 64K and 128K respectively.
  133 options         DFLTPHYS=(64*1024)
  134 options         MAXPHYS=(128*1024)
  135 
  136 
  137 # This allows you to actually store this configuration file into
  138 # the kernel binary itself. See config(8) for more details.
  139 #
  140 options         INCLUDE_CONFIG_FILE     # Include this file in kernel
  141 
  142 #
  143 # Compile-time defaults for various boot parameters
  144 #
  145 options         BOOTVERBOSE=1
  146 options         BOOTHOWTO=RB_MULTIPLE
  147 
  148 options         GEOM_AES                # Don't use, use GEOM_BDE
  149 options         GEOM_BDE                # Disk encryption.
  150 options         GEOM_BSD                # BSD disklabels
  151 options         GEOM_CACHE              # Disk cache.
  152 options         GEOM_CONCAT             # Disk concatenation.
  153 options         GEOM_ELI                # Disk encryption.
  154 options         GEOM_FOX                # Redundant path mitigation
  155 options         GEOM_GATE               # Userland services.
  156 options         GEOM_JOURNAL            # Journaling.
  157 options         GEOM_LABEL              # Providers labelization.
  158 options         GEOM_LINUX_LVM          # Linux LVM2 volumes
  159 options         GEOM_MBR                # DOS/MBR partitioning
  160 options         GEOM_MIRROR             # Disk mirroring.
  161 options         GEOM_MULTIPATH          # Disk multipath
  162 options         GEOM_NOP                # Test class.
  163 options         GEOM_PART_APM           # Apple partitioning
  164 options         GEOM_PART_BSD           # BSD disklabel
  165 options         GEOM_PART_BSD64         # BSD disklabel64
  166 options         GEOM_PART_EBR           # Extended Boot Records
  167 options         GEOM_PART_EBR_COMPAT    # Backward compatible partition names
  168 options         GEOM_PART_GPT           # GPT partitioning
  169 options         GEOM_PART_LDM           # Logical Disk Manager
  170 options         GEOM_PART_MBR           # MBR partitioning
  171 options         GEOM_PART_PC98          # PC-9800 disk partitioning
  172 options         GEOM_PART_VTOC8         # SMI VTOC8 disk label
  173 options         GEOM_PC98               # NEC PC9800 partitioning
  174 options         GEOM_RAID               # Soft RAID functionality.
  175 options         GEOM_RAID3              # RAID3 functionality.
  176 options         GEOM_SHSEC              # Shared secret.
  177 options         GEOM_STRIPE             # Disk striping.
  178 options         GEOM_SUNLABEL           # Sun/Solaris partitioning
  179 options         GEOM_UZIP               # Read-only compressed disks
  180 options         GEOM_VINUM              # Vinum logical volume manager
  181 options         GEOM_VIRSTOR            # Virtual storage.
  182 options         GEOM_VOL                # Volume names from UFS superblock
  183 options         GEOM_ZERO               # Performance testing helper.
  184 
  185 #
  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.
  190 #
  191 options         ROOTDEVNAME=\"ufs:da0s2e\"
  192 
  193 
  194 #####################################################################
  195 # Scheduler options:
  196 #
  197 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory.  These options
  198 # select which scheduler is compiled in.
  199 #
  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.
  203 #
  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.
  209 #
  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.
  212 #
  213 options         SCHED_4BSD
  214 options         SCHED_STATS
  215 #options        SCHED_ULE
  216 
  217 #####################################################################
  218 # SMP OPTIONS:
  219 #
  220 # SMP enables building of a Symmetric MultiProcessor Kernel.
  221 
  222 # Mandatory:
  223 options         SMP                     # Symmetric MultiProcessor Kernel
  224 
  225 # MAXCPU defines the maximum number of CPUs that can boot in the system.
  226 # A default value should be already present, for every architecture.
  227 options         MAXCPU=32
  228 
  229 # MAXMEMDOM defines the maximum number of memory domains that can boot in the
  230 # system.  A default value should already be defined by every architecture.
  231 options         MAXMEMDOM=1
  232 
  233 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
  234 # if the thread that currently owns the mutex is executing on another
  235 # CPU.  This behavior is enabled by default, so this option can be used
  236 # to disable it.
  237 options         NO_ADAPTIVE_MUTEXES
  238 
  239 # ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
  240 # if the thread that currently owns the rwlock is executing on another
  241 # CPU.  This behavior is enabled by default, so this option can be used
  242 # to disable it.
  243 options         NO_ADAPTIVE_RWLOCKS
  244 
  245 # ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
  246 # currently owns the sx lock is executing on another CPU.
  247 # This behavior is enabled by default, so this option can be used to
  248 # disable it.
  249 options         NO_ADAPTIVE_SX
  250 
  251 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
  252 # operation rather than inlining the simple cases.  This can be used to
  253 # shrink the size of the kernel text segment.  Note that this behavior is
  254 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
  255 # and WITNESS options.
  256 options         MUTEX_NOINLINE
  257 
  258 # RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
  259 # operation rather than inlining the simple cases.  This can be used to
  260 # shrink the size of the kernel text segment.  Note that this behavior is
  261 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
  262 # and WITNESS options.
  263 options         RWLOCK_NOINLINE
  264 
  265 # SX_NOINLINE forces sx lock operations to call functions to perform each
  266 # operation rather than inlining the simple cases.  This can be used to
  267 # shrink the size of the kernel text segment.  Note that this behavior is
  268 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
  269 # and WITNESS options.
  270 options         SX_NOINLINE
  271 
  272 # SMP Debugging Options:
  273 #
  274 # CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
  275 #         structure used as backend in callout(9).
  276 # PREEMPTION allows the threads that are in the kernel to be preempted by
  277 #         higher priority [interrupt] threads.  It helps with interactivity
  278 #         and allows interrupt threads to run sooner rather than waiting.
  279 #         WARNING! Only tested on amd64 and i386.
  280 # FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
  281 #         threads.  Its sole use is to expose race conditions and other
  282 #         bugs during development.  Enabling this option will reduce
  283 #         performance and increase the frequency of kernel panics by
  284 #         design.  If you aren't sure that you need it then you don't.
  285 #         Relies on the PREEMPTION option.  DON'T TURN THIS ON.
  286 # MUTEX_DEBUG enables various extra assertions in the mutex code.
  287 # SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
  288 #         used to hold active sleep queues as well as sleep wait message
  289 #         frequency.
  290 # TURNSTILE_PROFILING enables rudimentary profiling of the hash table
  291 #         used to hold active lock queues.
  292 # UMTX_PROFILING enables rudimentary profiling of the hash table used 
  293           to hold active lock queues.
  294 # WITNESS enables the witness code which detects deadlocks and cycles
  295 #         during locking operations.
  296 # WITNESS_KDB causes the witness code to drop into the kernel debugger if
  297 #         a lock hierarchy violation occurs or if locks are held when going to
  298 #         sleep.
  299 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
  300 options         PREEMPTION
  301 options         FULL_PREEMPTION
  302 options         MUTEX_DEBUG
  303 options         WITNESS
  304 options         WITNESS_KDB
  305 options         WITNESS_SKIPSPIN
  306 
  307 # LOCK_PROFILING - Profiling locks.  See LOCK_PROFILING(9) for details.
  308 options         LOCK_PROFILING
  309 # Set the number of buffers and the hash size.  The hash size MUST be larger
  310 # than the number of buffers.  Hash size should be prime.
  311 options         MPROF_BUFFERS="1536"
  312 options         MPROF_HASH_SIZE="1543"
  313 
  314 # Profiling for the callout(9) backend.
  315 options         CALLOUT_PROFILING
  316 
  317 # Profiling for internal hash tables.
  318 options         SLEEPQUEUE_PROFILING
  319 options         TURNSTILE_PROFILING
  320 options         UMTX_PROFILING
  321 
  322 
  323 #####################################################################
  324 # COMPATIBILITY OPTIONS
  325 
  326 #
  327 # Implement system calls compatible with 4.3BSD and older versions of
  328 # FreeBSD.  You probably do NOT want to remove this as much current code
  329 # still relies on the 4.3 emulation.  Note that some architectures that
  330 # are supported by FreeBSD do not include support for certain important
  331 # aspects of this compatibility option, namely those related to the
  332 # signal delivery mechanism.
  333 #
  334 options         COMPAT_43
  335 
  336 # Old tty interface.
  337 options         COMPAT_43TTY
  338 
  339 # Note that as a general rule, COMPAT_FREEBSD<n> depends on
  340 # COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
  341 
  342 # Enable FreeBSD4 compatibility syscalls
  343 options         COMPAT_FREEBSD4
  344 
  345 # Enable FreeBSD5 compatibility syscalls
  346 options         COMPAT_FREEBSD5
  347 
  348 # Enable FreeBSD6 compatibility syscalls
  349 options         COMPAT_FREEBSD6
  350 
  351 # Enable FreeBSD7 compatibility syscalls
  352 options         COMPAT_FREEBSD7
  353 
  354 # Enable Linux Kernel Programming Interface
  355 #options        COMPAT_LINUXKPI
  356 
  357 #
  358 # These three options provide support for System V Interface
  359 # Definition-style interprocess communication, in the form of shared
  360 # memory, semaphores, and message queues, respectively.
  361 #
  362 options         SYSVSHM
  363 options         SYSVSEM
  364 options         SYSVMSG
  365 
  366 
  367 #####################################################################
  368 # DEBUGGING OPTIONS
  369 
  370 #
  371 # Compile with kernel debugger related code.
  372 #
  373 options         KDB
  374 
  375 #
  376 # Print a stack trace of the current thread on the console for a panic.
  377 #
  378 options         KDB_TRACE
  379 
  380 #
  381 # Don't enter the debugger for a panic. Intended for unattended operation
  382 # where you may want to enter the debugger from the console, but still want
  383 # the machine to recover from a panic.
  384 #
  385 options         KDB_UNATTENDED
  386 
  387 #
  388 # Enable the ddb debugger backend.
  389 #
  390 options         DDB
  391 
  392 #
  393 # Print the numerical value of symbols in addition to the symbolic
  394 # representation.
  395 #
  396 options         DDB_NUMSYM
  397 
  398 #
  399 # Enable the remote gdb debugger backend.
  400 #
  401 options         GDB
  402 
  403 #
  404 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
  405 # contents of the registered sysctl nodes on the console.  It is disabled by
  406 # default because it generates excessively verbose console output that can
  407 # interfere with serial console operation.
  408 #
  409 options         SYSCTL_DEBUG
  410 
  411 #
  412 # Enable textdump by default, this disables kernel core dumps.
  413 #
  414 options         TEXTDUMP_PREFERRED
  415 
  416 #
  417 # Enable extra debug messages while performing textdumps.
  418 #
  419 options         TEXTDUMP_VERBOSE
  420 
  421 #
  422 # NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
  423 # resulting kernel.
  424 options         NO_SYSCTL_DESCR
  425 
  426 #
  427 # MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
  428 # allocations that are smaller than a page.  The purpose is to isolate
  429 # different malloc types into hash classes, so that any buffer
  430 # overruns or use-after-free will usually only affect memory from
  431 # malloc types in that hash class.  This is purely a debugging tool;
  432 # by varying the hash function and tracking which hash class was
  433 # corrupted, the intersection of the hash classes from each instance
  434 # will point to a single malloc type that is being misused.  At this
  435 # point inspection or memguard(9) can be used to catch the offending
  436 # code.
  437 #
  438 options         MALLOC_DEBUG_MAXZONES=8
  439 
  440 #
  441 # DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
  442 # for the kernel used to detect modify-after-free scenarios.  See the
  443 # memguard(9) man page for more information on usage.
  444 #
  445 options         DEBUG_MEMGUARD
  446 
  447 #
  448 # DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
  449 # malloc(9).
  450 #
  451 options         DEBUG_REDZONE
  452 
  453 #
  454 # KTRACE enables the system-call tracing facility ktrace(2).  To be more
  455 # SMP-friendly, KTRACE uses a worker thread to process most trace events
  456 # asynchronously to the thread generating the event.  This requires a
  457 # pre-allocated store of objects representing trace events.  The
  458 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
  459 # The size of the pool can be adjusted both at boottime and runtime via
  460 # the kern.ktrace_request_pool tunable and sysctl.
  461 #
  462 options         KTRACE                  #kernel tracing
  463 options         KTRACE_REQUEST_POOL=101
  464 
  465 #
  466 # KTR is a kernel tracing facility imported from BSD/OS.  It is
  467 # enabled with the KTR option.  KTR_ENTRIES defines the number of
  468 # entries in the circular trace buffer; it may be an arbitrary number.
  469 # KTR_BOOT_ENTRIES defines the number of entries during the early boot,
  470 # before malloc(9) is functional.
  471 # KTR_COMPILE defines the mask of events to compile into the kernel as
  472 # defined by the KTR_* constants in <sys/ktr.h>.  KTR_MASK defines the
  473 # initial value of the ktr_mask variable which determines at runtime
  474 # what events to trace.  KTR_CPUMASK determines which CPU's log
  475 # events, with bit X corresponding to CPU X.  The layout of the string
  476 # passed as KTR_CPUMASK must match a series of bitmasks each of them
  477 # separated by the "," character (ie:
  478 # KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF).  KTR_VERBOSE enables
  479 # dumping of KTR events to the console by default.  This functionality
  480 # can be toggled via the debug.ktr_verbose sysctl and defaults to off
  481 # if KTR_VERBOSE is not defined.  See ktr(4) and ktrdump(8) for details.
  482 #
  483 options         KTR
  484 options         KTR_BOOT_ENTRIES=1024
  485 options         KTR_ENTRIES=(128*1024)
  486 options         KTR_COMPILE=(KTR_INTR|KTR_PROC)
  487 options         KTR_MASK=KTR_INTR
  488 options         KTR_CPUMASK=0x3
  489 options         KTR_VERBOSE
  490 
  491 #
  492 # ALQ(9) is a facility for the asynchronous queuing of records from the kernel
  493 # to a vnode, and is employed by services such as ktr(4) to produce trace
  494 # files based on a kernel event stream.  Records are written asynchronously
  495 # in a worker thread.
  496 #
  497 options         ALQ
  498 options         KTR_ALQ
  499 
  500 #
  501 # The INVARIANTS option is used in a number of source files to enable
  502 # extra sanity checking of internal structures.  This support is not
  503 # enabled by default because of the extra time it would take to check
  504 # for these conditions, which can only occur as a result of
  505 # programming errors.
  506 #
  507 options         INVARIANTS
  508 
  509 #
  510 # The INVARIANT_SUPPORT option makes us compile in support for
  511 # verifying some of the internal structures.  It is a prerequisite for
  512 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
  513 # called.  The intent is that you can set 'INVARIANTS' for single
  514 # source files (by changing the source file or specifying it on the
  515 # command line) if you have 'INVARIANT_SUPPORT' enabled.  Also, if you
  516 # wish to build a kernel module with 'INVARIANTS', then adding
  517 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
  518 # infrastructure without the added overhead.
  519 #
  520 options         INVARIANT_SUPPORT
  521 
  522 #
  523 # The DIAGNOSTIC option is used to enable extra debugging information
  524 # from some parts of the kernel.  As this makes everything more noisy,
  525 # it is disabled by default.
  526 #
  527 options         DIAGNOSTIC
  528 
  529 #
  530 # REGRESSION causes optional kernel interfaces necessary only for regression
  531 # testing to be enabled.  These interfaces may constitute security risks
  532 # when enabled, as they permit processes to easily modify aspects of the
  533 # run-time environment to reproduce unlikely or unusual (possibly normally
  534 # impossible) scenarios.
  535 #
  536 options         REGRESSION
  537 
  538 #
  539 # This option lets some drivers co-exist that can't co-exist in a running
  540 # system.  This is used to be able to compile all kernel code in one go for
  541 # quality assurance purposes (like this file, which the option takes it name
  542 # from.)
  543 #
  544 options         COMPILING_LINT
  545 
  546 #
  547 # STACK enables the stack(9) facility, allowing the capture of kernel stack
  548 # for the purpose of procinfo(1), etc.  stack(9) will also be compiled in
  549 # automatically if DDB(4) is compiled into the kernel.
  550 #
  551 options         STACK
  552 
  553 
  554 #####################################################################
  555 # PERFORMANCE MONITORING OPTIONS
  556 
  557 #
  558 # The hwpmc driver that allows the use of in-CPU performance monitoring
  559 # counters for performance monitoring.  The base kernel needs to be configured
  560 # with the 'options' line, while the hwpmc device can be either compiled
  561 # in or loaded as a loadable kernel module.
  562 #
  563 # Additional configuration options may be required on specific architectures,
  564 # please see hwpmc(4).
  565 
  566 device          hwpmc                   # Driver (also a loadable module)
  567 options         HWPMC_DEBUG
  568 options         HWPMC_HOOKS             # Other necessary kernel hooks
  569 
  570 
  571 #####################################################################
  572 # NETWORKING OPTIONS
  573 
  574 #
  575 # Protocol families
  576 #
  577 options         INET                    #Internet communications protocols
  578 options         INET6                   #IPv6 communications protocols
  579 
  580 options         ROUTETABLES=2           # allocated fibs up to 65536. default is 1.
  581                                         # but that would be a bad idea as they are large.
  582 
  583 options         TCP_OFFLOAD             # TCP offload support.
  584 
  585 # In order to enable IPSEC you MUST also add device crypto to 
  586 # your kernel configuration
  587 options         IPSEC                   #IP security (requires device crypto)
  588 #options        IPSEC_DEBUG             #debug for IP security
  589 #
  590 # #DEPRECATED#
  591 # Set IPSEC_FILTERTUNNEL to change the default of the sysctl to force packets
  592 # coming through a tunnel to be processed by any configured packet filtering
  593 # twice. The default is that packets coming out of a tunnel are _not_ processed;
  594 # they are assumed trusted.
  595 #
  596 # IPSEC history is preserved for such packets, and can be filtered
  597 # using ipfw(8)'s 'ipsec' keyword, when this option is enabled.
  598 #
  599 #options        IPSEC_FILTERTUNNEL      #filter ipsec packets from a tunnel
  600 #
  601 # Set IPSEC_NAT_T to enable NAT-Traversal support.  This enables
  602 # optional UDP encapsulation of ESP packets.
  603 #
  604 options         IPSEC_NAT_T             #NAT-T support, UDP encap of ESP
  605 
  606 options         IPX                     #IPX/SPX communications protocols
  607 
  608 options         NETATALK                #Appletalk communications protocols
  609 options         NETATALKDEBUG           #Appletalk debugging
  610 
  611 #
  612 # SMB/CIFS requester
  613 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
  614 # options.
  615 options         NETSMB                  #SMB/CIFS requester
  616 
  617 # mchain library. It can be either loaded as KLD or compiled into kernel
  618 options         LIBMCHAIN
  619 
  620 # libalias library, performing NAT
  621 options         LIBALIAS
  622 
  623 # flowtable cache
  624 options         FLOWTABLE
  625 
  626 #
  627 # SCTP is a NEW transport protocol defined by
  628 # RFC2960 updated by RFC3309 and RFC3758.. and
  629 # soon to have a new base RFC and many many more
  630 # extensions. This release supports all the extensions
  631 # including many drafts (most about to become RFC's).
  632 # It is the reference implementation of SCTP
  633 # and is quite well tested.
  634 #
  635 # Note YOU MUST have both INET and INET6 defined.
  636 # You don't have to enable V6, but SCTP is 
  637 # dual stacked and so far we have not torn apart
  638 # the V6 and V4.. since an association can span
  639 # both a V6 and V4 address at the SAME time :-)
  640 #
  641 options         SCTP
  642 # There are bunches of options:
  643 # this one turns on all sorts of
  644 # nastily printing that you can
  645 # do. It's all controlled by a
  646 # bit mask (settable by socket opt and
  647 # by sysctl). Including will not cause
  648 # logging until you set the bits.. but it
  649 # can be quite verbose.. so without this
  650 # option we don't do any of the tests for
  651 # bits and prints.. which makes the code run
  652 # faster.. if you are not debugging don't use.
  653 options         SCTP_DEBUG
  654 #
  655 # This option turns off the CRC32c checksum. Basically,
  656 # you will not be able to talk to anyone else who
  657 # has not done this. Its more for experimentation to
  658 # see how much CPU the CRC32c really takes. Most new
  659 # cards for TCP support checksum offload.. so this 
  660 # option gives you a "view" into what SCTP would be
  661 # like with such an offload (which only exists in
  662 # high in iSCSI boards so far). With the new
  663 # splitting 8's algorithm its not as bad as it used
  664 # to be.. but it does speed things up try only
  665 # for in a captured lab environment :-)
  666 options         SCTP_WITH_NO_CSUM
  667 #
  668 
  669 #
  670 # All that options after that turn on specific types of
  671 # logging. You can monitor CWND growth, flight size
  672 # and all sorts of things. Go look at the code and
  673 # see. I have used this to produce interesting 
  674 # charts and graphs as well :->
  675 # 
  676 # I have not yet committed the tools to get and print
  677 # the logs, I will do that eventually .. before then
  678 # if you want them send me an email rrs@freebsd.org
  679 # You basically must have ktr(4) enabled for these
  680 # and you then set the sysctl to turn on/off various
  681 # logging bits. Use ktrdump(8) to pull the log and run
  682 # it through a display program.. and graphs and other
  683 # things too.
  684 #
  685 options         SCTP_LOCK_LOGGING
  686 options         SCTP_MBUF_LOGGING
  687 options         SCTP_MBCNT_LOGGING
  688 options         SCTP_PACKET_LOGGING
  689 options         SCTP_LTRACE_CHUNKS
  690 options         SCTP_LTRACE_ERRORS
  691 
  692 
  693 # altq(9). Enable the base part of the hooks with the ALTQ option.
  694 # Individual disciplines must be built into the base system and can not be
  695 # loaded as modules at this point. ALTQ requires a stable TSC so if yours is
  696 # broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
  697 # option.
  698 options         ALTQ
  699 options         ALTQ_CBQ        # Class Based Queueing
  700 options         ALTQ_RED        # Random Early Detection
  701 options         ALTQ_RIO        # RED In/Out
  702 options         ALTQ_HFSC       # Hierarchical Packet Scheduler
  703 options         ALTQ_CDNR       # Traffic conditioner
  704 options         ALTQ_PRIQ       # Priority Queueing
  705 options         ALTQ_NOPCC      # Required if the TSC is unusable
  706 options         ALTQ_DEBUG
  707 
  708 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
  709 # Individual node types can be enabled with the corresponding option
  710 # listed below; however, this is not strictly necessary as netgraph
  711 # will automatically load the corresponding KLD module if the node type
  712 # is not already compiled into the kernel. Each type below has a
  713 # corresponding man page, e.g., ng_async(8).
  714 options         NETGRAPH                # netgraph(4) system
  715 options         NETGRAPH_DEBUG          # enable extra debugging, this
  716                                         # affects netgraph(4) and nodes
  717 # Node types
  718 options         NETGRAPH_ASYNC
  719 options         NETGRAPH_ATMLLC
  720 options         NETGRAPH_ATM_ATMPIF
  721 options         NETGRAPH_BLUETOOTH              # ng_bluetooth(4)
  722 options         NETGRAPH_BLUETOOTH_BT3C         # ng_bt3c(4)
  723 options         NETGRAPH_BLUETOOTH_HCI          # ng_hci(4)
  724 options         NETGRAPH_BLUETOOTH_L2CAP        # ng_l2cap(4)
  725 options         NETGRAPH_BLUETOOTH_SOCKET       # ng_btsocket(4)
  726 options         NETGRAPH_BLUETOOTH_UBT          # ng_ubt(4)
  727 options         NETGRAPH_BLUETOOTH_UBTBCMFW     # ubtbcmfw(4)
  728 options         NETGRAPH_BPF
  729 options         NETGRAPH_BRIDGE
  730 options         NETGRAPH_CAR
  731 options         NETGRAPH_CISCO
  732 options         NETGRAPH_DEFLATE
  733 options         NETGRAPH_DEVICE
  734 options         NETGRAPH_ECHO
  735 options         NETGRAPH_EIFACE
  736 options         NETGRAPH_ETHER
  737 options         NETGRAPH_FEC
  738 options         NETGRAPH_FRAME_RELAY
  739 options         NETGRAPH_GIF
  740 options         NETGRAPH_GIF_DEMUX
  741 options         NETGRAPH_HOLE
  742 options         NETGRAPH_IFACE
  743 options         NETGRAPH_IP_INPUT
  744 options         NETGRAPH_IPFW
  745 options         NETGRAPH_KSOCKET
  746 options         NETGRAPH_L2TP
  747 options         NETGRAPH_LMI
  748 # MPPC compression requires proprietary files (not included)
  749 #options        NETGRAPH_MPPC_COMPRESSION
  750 options         NETGRAPH_MPPC_ENCRYPTION
  751 options         NETGRAPH_NETFLOW
  752 options         NETGRAPH_NAT
  753 options         NETGRAPH_ONE2MANY
  754 options         NETGRAPH_PATCH
  755 options         NETGRAPH_PIPE
  756 options         NETGRAPH_PPP
  757 options         NETGRAPH_PPPOE
  758 options         NETGRAPH_PPTPGRE
  759 options         NETGRAPH_PRED1
  760 options         NETGRAPH_RFC1490
  761 options         NETGRAPH_SOCKET
  762 options         NETGRAPH_SPLIT
  763 options         NETGRAPH_SPPP
  764 options         NETGRAPH_TAG
  765 options         NETGRAPH_TCPMSS
  766 options         NETGRAPH_TEE
  767 options         NETGRAPH_UI
  768 options         NETGRAPH_VJC
  769 options         NETGRAPH_VLAN
  770 
  771 # NgATM - Netgraph ATM
  772 options         NGATM_ATM
  773 options         NGATM_ATMBASE
  774 options         NGATM_SSCOP
  775 options         NGATM_SSCFU
  776 options         NGATM_UNI
  777 options         NGATM_CCATM
  778 
  779 device          mn      # Munich32x/Falc54 Nx64kbit/sec cards.
  780 
  781 # Network stack virtualization.
  782 #options        VIMAGE
  783 #options        VNET_DEBUG      # debug for VIMAGE
  784 
  785 #
  786 # Network interfaces:
  787 #  The `loop' device is MANDATORY when networking is enabled.
  788 device          loop
  789 
  790 #  The `ether' device provides generic code to handle
  791 #  Ethernets; it is MANDATORY when an Ethernet device driver is
  792 #  configured or token-ring is enabled.
  793 device          ether
  794 
  795 #  The `vlan' device implements the VLAN tagging of Ethernet frames
  796 #  according to IEEE 802.1Q.
  797 device          vlan
  798 
  799 # The `vxlan' device implements the VXLAN encapsulation of Ethernet
  800 # frames in UDP packets according to RFC7348.
  801 device          vxlan
  802 
  803 #  The `wlan' device provides generic code to support 802.11
  804 #  drivers, including host AP mode; it is MANDATORY for the wi,
  805 #  and ath drivers and will eventually be required by all 802.11 drivers.
  806 device          wlan
  807 options         IEEE80211_DEBUG         #enable debugging msgs
  808 options         IEEE80211_AMPDU_AGE     #age frames in AMPDU reorder q's
  809 options         IEEE80211_SUPPORT_MESH  #enable 802.11s D3.0 support
  810 options         IEEE80211_SUPPORT_TDMA  #enable TDMA support
  811 
  812 #  The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
  813 #  support for WEP, TKIP, and AES-CCMP crypto protocols optionally
  814 #  used with 802.11 devices that depend on the `wlan' module.
  815 device          wlan_wep
  816 device          wlan_ccmp
  817 device          wlan_tkip
  818 
  819 #  The `wlan_xauth' device provides support for external (i.e. user-mode)
  820 #  authenticators for use with 802.11 drivers that use the `wlan'
  821 #  module and support 802.1x and/or WPA security protocols.
  822 device          wlan_xauth
  823 
  824 #  The `wlan_acl' device provides a MAC-based access control mechanism
  825 #  for use with 802.11 drivers operating in ap mode and using the
  826 #  `wlan' module.
  827 #  The 'wlan_amrr' device provides AMRR transmit rate control algorithm
  828 device          wlan_acl
  829 device          wlan_amrr
  830 
  831 # Generic TokenRing
  832 device          token
  833 
  834 #  The `fddi' device provides generic code to support FDDI.
  835 device          fddi
  836 
  837 #  The `arcnet' device provides generic code to support Arcnet.
  838 device          arcnet
  839 
  840 #  The `sppp' device serves a similar role for certain types
  841 #  of synchronous PPP links (like `cx', `ar').
  842 device          sppp
  843 
  844 #  The `bpf' device enables the Berkeley Packet Filter.  Be
  845 #  aware of the legal and administrative consequences of enabling this
  846 #  option.  DHCP requires bpf.
  847 device          bpf
  848 
  849 #  The `netmap' device implements memory-mapped access to network
  850 #  devices from userspace, enabling wire-speed packet capture and
  851 #  generation even at 10Gbit/s. Requires support in the device
  852 #  driver. Supported drivers are ixgbe, e1000, re.
  853 device          netmap
  854 
  855 #  The `disc' device implements a minimal network interface,
  856 #  which throws away all packets sent and never receives any.  It is
  857 #  included for testing and benchmarking purposes.
  858 device          disc
  859 
  860 # The `epair' device implements a virtual back-to-back connected Ethernet
  861 # like interface pair.
  862 device          epair
  863 
  864 #  The `edsc' device implements a minimal Ethernet interface,
  865 #  which discards all packets sent and receives none.
  866 device          edsc
  867 
  868 #  The `tap' device is a pty-like virtual Ethernet interface
  869 device          tap
  870 
  871 #  The `tun' device implements (user-)ppp and nos-tun(8)
  872 device          tun
  873 
  874 #  The `gif' device implements IPv6 over IP4 tunneling,
  875 #  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
  876 #  IPv6 over IPv6 tunneling.
  877 #  The `gre' device implements GRE (Generic Routing Encapsulation) tunneling,
  878 #  as specified in the RFC 2784 and RFC 2890.
  879 #  The `me' device implements Minimal Encapsulation within IPv4 as
  880 #  specified in the RFC 2004.
  881 #  The XBONEHACK option allows the same pair of addresses to be configured on
  882 #  multiple gif interfaces.
  883 device          gif
  884 device          gre
  885 device          me
  886 options         XBONEHACK
  887 
  888 #  The `faith' device captures packets sent to it and diverts them
  889 #  to the IPv4/IPv6 translation daemon.
  890 #  The `stf' device implements 6to4 encapsulation.
  891 device          faith
  892 device          stf
  893 
  894 #  The `ef' device provides support for multiple ethernet frame types
  895 #  specified via ETHER_* options. See ef(4) for details.
  896 device          ef
  897 options         ETHER_II                # enable Ethernet_II frame
  898 options         ETHER_8023              # enable Ethernet_802.3 (Novell) frame
  899 options         ETHER_8022              # enable Ethernet_802.2 frame
  900 options         ETHER_SNAP              # enable Ethernet_802.2/SNAP frame
  901 
  902 # The pf packet filter consists of three devices:
  903 #  The `pf' device provides /dev/pf and the firewall code itself.
  904 #  The `pflog' device provides the pflog0 interface which logs packets.
  905 #  The `pfsync' device provides the pfsync0 interface used for
  906 #   synchronization of firewall state tables (over the net).
  907 device          pf
  908 device          pflog
  909 device          pfsync
  910 
  911 # Bridge interface.
  912 device          if_bridge
  913 
  914 # Common Address Redundancy Protocol. See carp(4) for more details.
  915 device          carp
  916 
  917 # IPsec interface.
  918 device          enc
  919 
  920 # Link aggregation interface.
  921 device          lagg
  922 
  923 #
  924 # Internet family options:
  925 #
  926 # MROUTING enables the kernel multicast packet forwarder, which works
  927 # with mrouted and XORP.
  928 #
  929 # IPFIREWALL enables support for IP firewall construction, in
  930 # conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
  931 # logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
  932 # limits the number of times a matching entry can be logged.
  933 #
  934 # WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
  935 # and if you do not add other rules during startup to allow access,
  936 # YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
  937 # in /etc/rc.conf when first enabling this feature, then refining the
  938 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
  939 # feature works properly.
  940 #
  941 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
  942 # allow everything.  Use with care, if a cracker can crash your
  943 # firewall machine, they can get to your protected machines.  However,
  944 # if you are using it as an as-needed filter for specific problems as
  945 # they arise, then this may be for you.  Changing the default to 'allow'
  946 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
  947 # out of sync.
  948 #
  949 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''.  It
  950 # depends on IPFIREWALL if compiled into the kernel.
  951 #
  952 # IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
  953 # LIBALIAS.
  954 #
  955 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
  956 # packets without touching the TTL).  This can be useful to hide firewalls
  957 # from traceroute and similar tools.
  958 #
  959 # PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
  960 #
  961 # TCPDEBUG enables code which keeps traces of the TCP state machine
  962 # for sockets with the SO_DEBUG option set, which can then be examined
  963 # using the trpt(8) utility.
  964 #
  965 # RADIX_MPATH provides support for equal-cost multi-path routing.
  966 #
  967 options         MROUTING                # Multicast routing
  968 options         IPFIREWALL              #firewall
  969 options         IPFIREWALL_VERBOSE      #enable logging to syslogd(8)
  970 options         IPFIREWALL_VERBOSE_LIMIT=100    #limit verbosity
  971 options         IPFIREWALL_DEFAULT_TO_ACCEPT    #allow everything by default
  972 options         IPFIREWALL_NAT          #ipfw kernel nat support
  973 options         IPDIVERT                #divert sockets
  974 options         IPFILTER                #ipfilter support
  975 options         IPFILTER_LOG            #ipfilter logging
  976 options         IPFILTER_LOOKUP         #ipfilter pools
  977 options         IPFILTER_DEFAULT_BLOCK  #block all packets by default
  978 options         IPSTEALTH               #support for stealth forwarding
  979 options         PF_DEFAULT_TO_DROP      #drop everything by default
  980 options         TCPDEBUG
  981 options         RADIX_MPATH
  982 
  983 # The MBUF_STRESS_TEST option enables options which create
  984 # various random failures / extreme cases related to mbuf
  985 # functions.  See mbuf(9) for a list of available test cases.
  986 # MBUF_PROFILING enables code to profile the mbuf chains
  987 # exiting the system (via participating interfaces) and
  988 # return a logarithmic histogram of monitored parameters
  989 # (e.g. packet size, wasted space, number of mbufs in chain).
  990 options         MBUF_STRESS_TEST
  991 options         MBUF_PROFILING
  992 
  993 # Statically link in accept filters
  994 options         ACCEPT_FILTER_DATA
  995 options         ACCEPT_FILTER_DNS
  996 options         ACCEPT_FILTER_HTTP
  997 
  998 # TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
  999 # carried in TCP option 19. This option is commonly used to protect
 1000 # TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
 1001 # This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
 1002 # This requires the use of 'device crypto', 'options IPSEC'
 1003 # or 'device cryptodev'.
 1004 options         TCP_SIGNATURE           #include support for RFC 2385
 1005 
 1006 # DUMMYNET enables the "dummynet" bandwidth limiter.  You need IPFIREWALL
 1007 # as well.  See dummynet(4) and ipfw(8) for more info.  When you run
 1008 # DUMMYNET it is advisable to also have at least "options HZ=1000" to achieve
 1009 # a smooth scheduling of the traffic.
 1010 options         DUMMYNET
 1011 
 1012 #####################################################################
 1013 # FILESYSTEM OPTIONS
 1014 
 1015 #
 1016 # Only the root filesystem needs to be statically compiled or preloaded
 1017 # as module; everything else will be automatically loaded at mount
 1018 # time.  Some people still prefer to statically compile other
 1019 # filesystems as well.
 1020 #
 1021 # NB: The UNION filesystem was known to be buggy in the past.  It is now
 1022 # being actively maintained, although there are still some issues being
 1023 # resolved.
 1024 #
 1025 
 1026 # One of these is mandatory:
 1027 options         FFS                     #Fast filesystem
 1028 options         NFSCLIENT               #Network File System client
 1029 
 1030 # The rest are optional:
 1031 options         AUTOFS                  #Automounter filesystem
 1032 options         CD9660                  #ISO 9660 filesystem
 1033 options         FDESCFS                 #File descriptor filesystem
 1034 options         FUSE                    #FUSE support module
 1035 options         MSDOSFS                 #MS DOS File System (FAT, FAT32)
 1036 options         NFSSERVER               #Network File System server
 1037 options         NFSLOCKD                #Network Lock Manager
 1038 options         NFSCL                   #New Network Filesystem Client
 1039 options         NFSD                    #New Network Filesystem Server
 1040 options         KGSSAPI                 #Kernel GSSAPI implementation
 1041 
 1042 options         NULLFS                  #NULL filesystem
 1043 options         PROCFS                  #Process filesystem (requires PSEUDOFS)
 1044 options         PSEUDOFS                #Pseudo-filesystem framework
 1045 options         PSEUDOFS_TRACE          #Debugging support for PSEUDOFS
 1046 options         SMBFS                   #SMB/CIFS filesystem
 1047 options         TMPFS                   #Efficient memory filesystem
 1048 options         UDF                     #Universal Disk Format
 1049 options         UNIONFS                 #Union filesystem
 1050 # The xFS_ROOT options REQUIRE the associated ``options xFS''
 1051 options         NFS_ROOT                #NFS usable as root device
 1052 
 1053 # Soft updates is a technique for improving filesystem speed and
 1054 # making abrupt shutdown less risky.
 1055 #
 1056 options         SOFTUPDATES
 1057 
 1058 # Extended attributes allow additional data to be associated with files,
 1059 # and is used for ACLs, Capabilities, and MAC labels.
 1060 # See src/sys/ufs/ufs/README.extattr for more information.
 1061 options         UFS_EXTATTR
 1062 options         UFS_EXTATTR_AUTOSTART
 1063 
 1064 # Access Control List support for UFS filesystems.  The current ACL
 1065 # implementation requires extended attribute support, UFS_EXTATTR,
 1066 # for the underlying filesystem.
 1067 # See src/sys/ufs/ufs/README.acls for more information.
 1068 options         UFS_ACL
 1069 
 1070 # Directory hashing improves the speed of operations on very large
 1071 # directories at the expense of some memory.
 1072 options         UFS_DIRHASH
 1073 
 1074 # Gjournal-based UFS journaling support.
 1075 options         UFS_GJOURNAL
 1076 
 1077 # Make space in the kernel for a root filesystem on a md device.
 1078 # Define to the number of kilobytes to reserve for the filesystem.
 1079 options         MD_ROOT_SIZE=10
 1080 
 1081 # Make the md device a potential root device, either with preloaded
 1082 # images of type mfs_root or md_root.
 1083 options         MD_ROOT
 1084 
 1085 # Disk quotas are supported when this option is enabled.
 1086 options         QUOTA                   #enable disk quotas
 1087 
 1088 # If you are running a machine just as a fileserver for PC and MAC
 1089 # users, using SAMBA or Netatalk, you may consider setting this option
 1090 # and keeping all those users' directories on a filesystem that is
 1091 # mounted with the suiddir option. This gives new files the same
 1092 # ownership as the directory (similar to group). It's a security hole
 1093 # if you let these users run programs, so confine it to file-servers
 1094 # (but it'll save you lots of headaches in those cases). Root owned
 1095 # directories are exempt and X bits are cleared. The suid bit must be
 1096 # set on the directory as well; see chmod(1). PC owners can't see/set
 1097 # ownerships so they keep getting their toes trodden on. This saves
 1098 # you all the support calls as the filesystem it's used on will act as
 1099 # they expect: "It's my dir so it must be my file".
 1100 #
 1101 options         SUIDDIR
 1102 
 1103 # NFS options:
 1104 options         NFS_MINATTRTIMO=3       # VREG attrib cache timeout in sec
 1105 options         NFS_MAXATTRTIMO=60
 1106 options         NFS_MINDIRATTRTIMO=30   # VDIR attrib cache timeout in sec
 1107 options         NFS_MAXDIRATTRTIMO=60
 1108 options         NFS_GATHERDELAY=10      # Default write gather delay (msec)
 1109 options         NFS_WDELAYHASHSIZ=16    # and with this
 1110 options         NFS_DEBUG               # Enable NFS Debugging
 1111 
 1112 #
 1113 # Add support for the EXT2FS filesystem of Linux fame.  Be a bit
 1114 # careful with this - the ext2fs code has a tendency to lag behind
 1115 # changes and not be exercised very much, so mounting read/write could
 1116 # be dangerous (and even mounting read only could result in panics.)
 1117 #
 1118 options         EXT2FS
 1119 
 1120 #
 1121 # Add support for the ReiserFS filesystem (used in Linux). Currently,
 1122 # this is limited to read-only access.
 1123 #
 1124 options         REISERFS
 1125 
 1126 # Use real implementations of the aio_* system calls.  There are numerous
 1127 # stability and security issues in the current aio code that make it
 1128 # unsuitable for inclusion on machines with untrusted local users.
 1129 options         VFS_AIO
 1130 
 1131 # Cryptographically secure random number generator; /dev/random
 1132 device          random
 1133 
 1134 # The system memory devices; /dev/mem, /dev/kmem
 1135 device          mem
 1136 
 1137 # The kernel symbol table device; /dev/ksyms
 1138 device          ksyms
 1139 
 1140 # Optional character code conversion support with LIBICONV.
 1141 # Each option requires their base file system and LIBICONV.
 1142 options         CD9660_ICONV
 1143 options         MSDOSFS_ICONV
 1144 options         UDF_ICONV
 1145 
 1146 
 1147 #####################################################################
 1148 # POSIX P1003.1B
 1149 
 1150 # Real time extensions added in the 1993 POSIX
 1151 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
 1152 
 1153 options         _KPOSIX_PRIORITY_SCHEDULING
 1154 # p1003_1b_semaphores are very experimental,
 1155 # user should be ready to assist in debugging if problems arise.
 1156 options         P1003_1B_SEMAPHORES
 1157 
 1158 # POSIX message queue
 1159 options         P1003_1B_MQUEUE
 1160 
 1161 #####################################################################
 1162 # SECURITY POLICY PARAMETERS
 1163 
 1164 # Support for BSM audit
 1165 options         AUDIT
 1166 
 1167 # Support for Mandatory Access Control (MAC):
 1168 options         MAC
 1169 options         MAC_BIBA
 1170 options         MAC_BSDEXTENDED
 1171 options         MAC_IFOFF
 1172 options         MAC_LOMAC
 1173 options         MAC_MLS
 1174 options         MAC_NONE
 1175 options         MAC_PARTITION
 1176 options         MAC_PORTACL
 1177 options         MAC_SEEOTHERUIDS
 1178 options         MAC_STUB
 1179 options         MAC_TEST
 1180 
 1181 # Support for Capsicum
 1182 options         CAPABILITIES    # fine-grained rights on file descriptors
 1183 options         CAPABILITY_MODE # sandboxes with no global namespace access
 1184 
 1185 # Support for process descriptors
 1186 options         PROCDESC
 1187 
 1188 
 1189 #####################################################################
 1190 # CLOCK OPTIONS
 1191 
 1192 # The granularity of operation is controlled by the kernel option HZ whose
 1193 # default value (1000 on most architectures) means a granularity of 1ms
 1194 # (1s/HZ).  Historically, the default was 100, but finer granularity is
 1195 # required for DUMMYNET and other systems on modern hardware.  There are
 1196 # reasonable arguments that HZ should, in fact, be 100 still; consider,
 1197 # that reducing the granularity too much might cause excessive overhead in
 1198 # clock interrupt processing, potentially causing ticks to be missed and thus
 1199 # actually reducing the accuracy of operation.
 1200 
 1201 options         HZ=100
 1202 
 1203 # Enable support for the kernel PLL to use an external PPS signal,
 1204 # under supervision of [x]ntpd(8)
 1205 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
 1206 
 1207 options         PPS_SYNC
 1208 
 1209 # Enable support for generic feed-forward clocks in the kernel.
 1210 # The feed-forward clock support is an alternative to the feedback oriented
 1211 # ntpd/system clock approach, and is to be used with a feed-forward
 1212 # synchronization algorithm such as the RADclock:
 1213 # More info here: http://www.synclab.org/radclock
 1214 
 1215 options         FFCLOCK
 1216 
 1217 
 1218 #####################################################################
 1219 # SCSI DEVICES
 1220 
 1221 # SCSI DEVICE CONFIGURATION
 1222 
 1223 # The SCSI subsystem consists of the `base' SCSI code, a number of
 1224 # high-level SCSI device `type' drivers, and the low-level host-adapter
 1225 # device drivers.  The host adapters are listed in the ISA and PCI
 1226 # device configuration sections below.
 1227 #
 1228 # It is possible to wire down your SCSI devices so that a given bus,
 1229 # target, and LUN always come on line as the same device unit.  In
 1230 # earlier versions the unit numbers were assigned in the order that
 1231 # the devices were probed on the SCSI bus.  This means that if you
 1232 # removed a disk drive, you may have had to rewrite your /etc/fstab
 1233 # file, and also that you had to be careful when adding a new disk
 1234 # as it may have been probed earlier and moved your device configuration
 1235 # around.  (See also option GEOM_VOL for a different solution to this
 1236 # problem.)
 1237 
 1238 # This old behavior is maintained as the default behavior.  The unit
 1239 # assignment begins with the first non-wired down unit for a device
 1240 # type.  For example, if you wire a disk as "da3" then the first
 1241 # non-wired disk will be assigned da4.
 1242 
 1243 # The syntax for wiring down devices is:
 1244 
 1245 hint.scbus.0.at="ahc0"
 1246 hint.scbus.1.at="ahc1"
 1247 hint.scbus.1.bus="0"
 1248 hint.scbus.3.at="ahc2"
 1249 hint.scbus.3.bus="0"
 1250 hint.scbus.2.at="ahc2"
 1251 hint.scbus.2.bus="1"
 1252 hint.da.0.at="scbus0"
 1253 hint.da.0.target="0"
 1254 hint.da.0.unit="0"
 1255 hint.da.1.at="scbus3"
 1256 hint.da.1.target="1"
 1257 hint.da.2.at="scbus2"
 1258 hint.da.2.target="3"
 1259 hint.sa.1.at="scbus1"
 1260 hint.sa.1.target="6"
 1261 
 1262 # "units" (SCSI logical unit number) that are not specified are
 1263 # treated as if specified as LUN 0.
 1264 
 1265 # All SCSI devices allocate as many units as are required.
 1266 
 1267 # The ch driver drives SCSI Media Changer ("jukebox") devices.
 1268 #
 1269 # The da driver drives SCSI Direct Access ("disk") and Optical Media
 1270 # ("WORM") devices.
 1271 #
 1272 # The sa driver drives SCSI Sequential Access ("tape") devices.
 1273 #
 1274 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
 1275 #
 1276 # The ses driver drives SCSI Environment Services ("ses") and
 1277 # SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
 1278 #
 1279 # The pt driver drives SCSI Processor devices.
 1280 #
 1281 # The sg driver provides a passthrough API that is compatible with the
 1282 # Linux SG driver.  It will work in conjunction with the COMPAT_LINUX
 1283 # option to run linux SG apps.  It can also stand on its own and provide
 1284 # source level API compatibility for porting apps to FreeBSD.
 1285 #
 1286 # Target Mode support is provided here but also requires that a SIM
 1287 # (SCSI Host Adapter Driver) provide support as well.
 1288 #
 1289 # The targ driver provides target mode support as a Processor type device.
 1290 # It exists to give the minimal context necessary to respond to Inquiry
 1291 # commands. There is a sample user application that shows how the rest
 1292 # of the command support might be done in /usr/share/examples/scsi_target.
 1293 #
 1294 # The targbh driver provides target mode support and exists to respond
 1295 # to incoming commands that do not otherwise have a logical unit assigned
 1296 # to them.
 1297 #
 1298 # The "unknown" device (uk? in pre-2.0.5) is now part of the base SCSI
 1299 # configuration as the "pass" driver.
 1300 
 1301 device          scbus           #base SCSI code
 1302 device          ch              #SCSI media changers
 1303 device          da              #SCSI direct access devices (aka disks)
 1304 device          sa              #SCSI tapes
 1305 device          cd              #SCSI CD-ROMs
 1306 device          ses             #Enclosure Services (SES and SAF-TE)
 1307 device          pt              #SCSI processor
 1308 device          targ            #SCSI Target Mode Code
 1309 device          targbh          #SCSI Target Mode Blackhole Device
 1310 device          pass            #CAM passthrough driver
 1311 device          sg              #Linux SCSI passthrough
 1312 device          ctl             #CAM Target Layer
 1313 
 1314 # CAM OPTIONS:
 1315 # debugging options:
 1316 # CAMDEBUG              Compile in all possible debugging.
 1317 # CAM_DEBUG_COMPILE     Debug levels to compile in.
 1318 # CAM_DEBUG_FLAGS       Debug levels to enable on boot.
 1319 # CAM_DEBUG_BUS         Limit debugging to the given bus.
 1320 # CAM_DEBUG_TARGET      Limit debugging to the given target.
 1321 # CAM_DEBUG_LUN         Limit debugging to the given lun.
 1322 # CAM_DEBUG_DELAY       Delay in us after printing each debug line.
 1323 #
 1324 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
 1325 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
 1326 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
 1327 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
 1328 #             queue after a bus reset, and the number of milliseconds to
 1329 #             freeze the device queue after a bus device reset.  This
 1330 #             can be changed at boot and runtime with the
 1331 #             kern.cam.scsi_delay tunable/sysctl.
 1332 options         CAMDEBUG
 1333 options         CAM_DEBUG_COMPILE=-1
 1334 options         CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
 1335 options         CAM_DEBUG_BUS=-1
 1336 options         CAM_DEBUG_TARGET=-1
 1337 options         CAM_DEBUG_LUN=-1
 1338 options         CAM_DEBUG_DELAY=1
 1339 options         CAM_MAX_HIGHPOWER=4
 1340 options         SCSI_NO_SENSE_STRINGS
 1341 options         SCSI_NO_OP_STRINGS
 1342 options         SCSI_DELAY=5000 # Be pessimistic about Joe SCSI device
 1343 
 1344 # Options for the CAM CDROM driver:
 1345 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
 1346 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
 1347 #                           enforced if there is I/O waiting for another LUN
 1348 # The compiled in defaults for these variables are 2 and 10 seconds,
 1349 # respectively.
 1350 #
 1351 # These can also be changed on the fly with the following sysctl variables:
 1352 # kern.cam.cd.changer.min_busy_seconds
 1353 # kern.cam.cd.changer.max_busy_seconds
 1354 #
 1355 options         CHANGER_MIN_BUSY_SECONDS=2
 1356 options         CHANGER_MAX_BUSY_SECONDS=10
 1357 
 1358 # Options for the CAM sequential access driver:
 1359 # SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
 1360 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
 1361 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
 1362 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
 1363 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
 1364 options         SA_IO_TIMEOUT=4
 1365 options         SA_SPACE_TIMEOUT=60
 1366 options         SA_REWIND_TIMEOUT=(2*60)
 1367 options         SA_ERASE_TIMEOUT=(4*60)
 1368 options         SA_1FM_AT_EOD
 1369 
 1370 # Optional timeout for the CAM processor target (pt) device
 1371 # This is specified in seconds.  The default is 60 seconds.
 1372 options         SCSI_PT_DEFAULT_TIMEOUT=60
 1373 
 1374 # Optional enable of doing SES passthrough on other devices (e.g., disks)
 1375 #
 1376 # Normally disabled because a lot of newer SCSI disks report themselves
 1377 # as having SES capabilities, but this can then clot up attempts to build
 1378 # a topology with the SES device that's on the box these drives are in....
 1379 options         SES_ENABLE_PASSTHROUGH
 1380 
 1381 
 1382 #####################################################################
 1383 # MISCELLANEOUS DEVICES AND OPTIONS
 1384 
 1385 device          pty             #BSD-style compatibility pseudo ttys
 1386 device          nmdm            #back-to-back tty devices
 1387 device          md              #Memory/malloc disk
 1388 device          snp             #Snoop device - to look at pty/vty/etc..
 1389 device          ccd             #Concatenated disk driver
 1390 device          firmware        #firmware(9) support
 1391 
 1392 # Kernel side iconv library
 1393 options         LIBICONV
 1394 
 1395 # Size of the kernel message buffer.  Should be N * pagesize.
 1396 options         MSGBUF_SIZE=40960
 1397 
 1398 
 1399 #####################################################################
 1400 # HARDWARE DEVICE CONFIGURATION
 1401 
 1402 # For ISA the required hints are listed.
 1403 # EISA, MCA, PCI, CardBus, SD/MMC and pccard are self identifying buses, so
 1404 # no hints are needed.
 1405 
 1406 #
 1407 # Mandatory devices:
 1408 #
 1409 
 1410 # These options are valid for other keyboard drivers as well.
 1411 options         KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
 1412 options         KBD_INSTALL_CDEV        # install a CDEV entry in /dev
 1413 
 1414 options         FB_DEBUG                # Frame buffer debugging
 1415 
 1416 device          splash                  # Splash screen and screen saver support
 1417 
 1418 # Various screen savers.
 1419 device          blank_saver
 1420 device          daemon_saver
 1421 device          dragon_saver
 1422 device          fade_saver
 1423 device          fire_saver
 1424 device          green_saver
 1425 device          logo_saver
 1426 device          rain_saver
 1427 device          snake_saver
 1428 device          star_saver
 1429 device          warp_saver
 1430 
 1431 # The syscons console driver (SCO color console compatible).
 1432 device          sc
 1433 hint.sc.0.at="isa"
 1434 options         MAXCONS=16              # number of virtual consoles
 1435 options         SC_ALT_MOUSE_IMAGE      # simplified mouse cursor in text mode
 1436 options         SC_DFLT_FONT            # compile font in
 1437 makeoptions     SC_DFLT_FONT=cp850
 1438 options         SC_DISABLE_KDBKEY       # disable `debug' key
 1439 options         SC_DISABLE_REBOOT       # disable reboot key sequence
 1440 options         SC_HISTORY_SIZE=200     # number of history buffer lines
 1441 options         SC_MOUSE_CHAR=0x3       # char code for text mode mouse cursor
 1442 options         SC_PIXEL_MODE           # add support for the raster text mode
 1443 
 1444 # The following options will let you change the default colors of syscons.
 1445 options         SC_NORM_ATTR=(FG_GREEN|BG_BLACK)
 1446 options         SC_NORM_REV_ATTR=(FG_YELLOW|BG_GREEN)
 1447 options         SC_KERNEL_CONS_ATTR=(FG_RED|BG_BLACK)
 1448 options         SC_KERNEL_CONS_REV_ATTR=(FG_BLACK|BG_RED)
 1449 
 1450 # The following options will let you change the default behavior of
 1451 # cut-n-paste feature
 1452 options         SC_CUT_SPACES2TABS      # convert leading spaces into tabs
 1453 options         SC_CUT_SEPCHARS=\"x09\" # set of characters that delimit words
 1454                                         # (default is single space - \"x20\")
 1455 
 1456 # If you have a two button mouse, you may want to add the following option
 1457 # to use the right button of the mouse to paste text.
 1458 options         SC_TWOBUTTON_MOUSE
 1459 
 1460 # You can selectively disable features in syscons.
 1461 options         SC_NO_CUTPASTE
 1462 options         SC_NO_FONT_LOADING
 1463 options         SC_NO_HISTORY
 1464 options         SC_NO_MODE_CHANGE
 1465 options         SC_NO_SYSMOUSE
 1466 options         SC_NO_SUSPEND_VTYSWITCH
 1467 
 1468 # `flags' for sc
 1469 #       0x80    Put the video card in the VESA 800x600 dots, 16 color mode
 1470 #       0x100   Probe for a keyboard device periodically if one is not present
 1471 
 1472 # Enable experimental features of the syscons terminal emulator (teken).
 1473 options         TEKEN_CONS25            # cons25-style terminal emulation
 1474 options         TEKEN_UTF8              # UTF-8 output handling
 1475 
 1476 #
 1477 # Optional devices:
 1478 #
 1479 
 1480 #
 1481 # SCSI host adapters:
 1482 #
 1483 # adv: All Narrow SCSI bus AdvanSys controllers.
 1484 # adw: Second Generation AdvanSys controllers including the ADV940UW.
 1485 # aha: Adaptec 154x/1535/1640
 1486 # ahb: Adaptec 174x EISA controllers
 1487 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
 1488 #      19160x/29160x, aic7770/aic78xx
 1489 # ahd: Adaptec 29320/39320 Controllers.
 1490 # aic: Adaptec 6260/6360, APA-1460 (PC Card), NEC PC9801-100 (C-BUS)
 1491 # bt:  Most Buslogic controllers: including BT-445, BT-54x, BT-64x, BT-74x,
 1492 #      BT-75x, BT-946, BT-948, BT-956, BT-958, SDC3211B, SDC3211F, SDC3222F
 1493 # esp: Emulex ESP, NCR 53C9x and QLogic FAS families based controllers
 1494 #      including the AMD Am53C974 (found on devices such as the Tekram
 1495 #      DC-390(T)) and the Sun ESP and FAS families of controllers
 1496 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
 1497 #      ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
 1498 #      ISP 12160 Ultra3 SCSI,
 1499 #      Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
 1500 #      Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
 1501 #      Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
 1502 # ispfw: Firmware module for Qlogic host adapters
 1503 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
 1504 #      or FC9x9 Fibre Channel host adapters.
 1505 # ncr: NCR 53C810, 53C825 self-contained SCSI host adapters.
 1506 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
 1507 #      53C810, 53C810A, 53C815, 53C825,  53C825A, 53C860, 53C875,
 1508 #      53C876, 53C885,  53C895, 53C895A, 53C896,  53C897, 53C1510D,
 1509 #      53C1010-33, 53C1010-66.
 1510 # trm: Tekram DC395U/UW/F DC315U adapters.
 1511 # wds: WD7000
 1512 
 1513 #
 1514 # Note that the order is important in order for Buslogic ISA/EISA cards to be
 1515 # probed correctly.
 1516 #
 1517 device          bt
 1518 hint.bt.0.at="isa"
 1519 hint.bt.0.port="0x330"
 1520 device          adv
 1521 hint.adv.0.at="isa"
 1522 device          adw
 1523 device          aha
 1524 hint.aha.0.at="isa"
 1525 device          aic
 1526 hint.aic.0.at="isa"
 1527 device          ahb
 1528 device          ahc
 1529 device          ahd
 1530 device          esp
 1531 device          iscsi_initiator
 1532 device          isp
 1533 hint.isp.0.disable="1"
 1534 hint.isp.0.role="3"
 1535 hint.isp.0.prefer_iomap="1"
 1536 hint.isp.0.prefer_memmap="1"
 1537 hint.isp.0.fwload_disable="1"
 1538 hint.isp.0.ignore_nvram="1"
 1539 hint.isp.0.fullduplex="1"
 1540 hint.isp.0.topology="lport"
 1541 hint.isp.0.topology="nport"
 1542 hint.isp.0.topology="lport-only"
 1543 hint.isp.0.topology="nport-only"
 1544 # we can't get u_int64_t types, nor can we get strings if it's got
 1545 # a leading 0x, hence this silly dodge.
 1546 hint.isp.0.portwnn="w50000000aaaa0000"
 1547 hint.isp.0.nodewnn="w50000000aaaa0001"
 1548 device          ispfw
 1549 device          mpt
 1550 device          ncr
 1551 device          sym
 1552 device          trm
 1553 device          wds
 1554 hint.wds.0.at="isa"
 1555 hint.wds.0.port="0x350"
 1556 hint.wds.0.irq="11"
 1557 hint.wds.0.drq="6"
 1558 
 1559 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
 1560 # controllers that have it configured only if this option is set. Unfortunately,
 1561 # this doesn't work on some motherboards, which prevents it from being the
 1562 # default.
 1563 options         AHC_ALLOW_MEMIO
 1564 
 1565 # Dump the contents of the ahc controller configuration PROM.
 1566 options         AHC_DUMP_EEPROM
 1567 
 1568 # Bitmap of units to enable targetmode operations.
 1569 options         AHC_TMODE_ENABLE
 1570 
 1571 # Compile in Aic7xxx Debugging code.
 1572 options         AHC_DEBUG
 1573 
 1574 # Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
 1575 options         AHC_DEBUG_OPTS
 1576 
 1577 # Print register bitfields in debug output.  Adds ~128k to driver
 1578 # See ahc(4).
 1579 options         AHC_REG_PRETTY_PRINT
 1580 
 1581 # Compile in aic79xx debugging code.
 1582 options         AHD_DEBUG
 1583 
 1584 # Aic79xx driver debugging options.  Adds ~215k to driver.  See ahd(4).
 1585 options         AHD_DEBUG_OPTS=0xFFFFFFFF
 1586 
 1587 # Print human-readable register definitions when debugging
 1588 options         AHD_REG_PRETTY_PRINT
 1589 
 1590 # Bitmap of units to enable targetmode operations.
 1591 options         AHD_TMODE_ENABLE
 1592 
 1593 # The adw driver will attempt to use memory mapped I/O for all PCI
 1594 # controllers that have it configured only if this option is set.
 1595 options         ADW_ALLOW_MEMIO
 1596 
 1597 # Options used in dev/iscsi (Software iSCSI stack)
 1598 #
 1599 options         ISCSI_INITIATOR_DEBUG=9
 1600 
 1601 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
 1602 #
 1603 #       ISP_TARGET_MODE         -       enable target mode operation
 1604 #
 1605 options         ISP_TARGET_MODE=1
 1606 #
 1607 #       ISP_DEFAULT_ROLES       -       default role
 1608 #               none=0
 1609 #               target=1
 1610 #               initiator=2
 1611 #               both=3                  (not supported currently)
 1612 #
 1613 #       ISP_INTERNAL_TARGET             (trivial internal disk target, for testing)
 1614 #
 1615 options         ISP_DEFAULT_ROLES=0
 1616 
 1617 # Options used in dev/sym/ (Symbios SCSI driver).
 1618 #options        SYM_SETUP_LP_PROBE_MAP  #-Low Priority Probe Map (bits)
 1619                                         # Allows the ncr to take precedence
 1620                                         # 1 (1<<0) -> 810a, 860
 1621                                         # 2 (1<<1) -> 825a, 875, 885, 895
 1622                                         # 4 (1<<2) -> 895a, 896, 1510d
 1623 #options        SYM_SETUP_SCSI_DIFF     #-HVD support for 825a, 875, 885
 1624                                         # disabled:0 (default), enabled:1
 1625 #options        SYM_SETUP_PCI_PARITY    #-PCI parity checking
 1626                                         # disabled:0, enabled:1 (default)
 1627 #options        SYM_SETUP_MAX_LUN       #-Number of LUNs supported
 1628                                         # default:8, range:[1..64]
 1629 
 1630 # The 'dpt' driver provides support for old DPT controllers (http://www.dpt.com/).
 1631 # These have hardware RAID-{0,1,5} support, and do multi-initiator I/O.
 1632 # The DPT controllers are commonly re-licensed under other brand-names -
 1633 # some controllers by Olivetti, Dec, HP, AT&T, SNI, AST, Alphatronic, NEC and
 1634 # Compaq are actually DPT controllers.
 1635 #
 1636 # See src/sys/dev/dpt for debugging and other subtle options.
 1637 #  DPT_MEASURE_PERFORMANCE  Enables a set of (semi)invasive metrics. Various
 1638 #                           instruments are enabled.  The tools in
 1639 #                           /usr/sbin/dpt_* assume these to be enabled.
 1640 #  DPT_DEBUG_xxxx           These are controllable from sys/dev/dpt/dpt.h
 1641 #  DPT_RESET_HBA            Make "reset" actually reset the controller
 1642 #                           instead of fudging it.  Only enable this if you
 1643 #                           are 100% certain you need it.
 1644 
 1645 device          dpt
 1646 
 1647 # DPT options
 1648 #!CAM# options  DPT_MEASURE_PERFORMANCE
 1649 options         DPT_RESET_HBA
 1650 
 1651 #
 1652 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
 1653 # These controllers have a SCSI-like interface, and require the
 1654 # CAM infrastructure.
 1655 #
 1656 device          ciss
 1657 
 1658 #
 1659 # Intel Integrated RAID controllers.
 1660 # This driver was developed and is maintained by Intel.  Contacts
 1661 # at Intel for this driver are
 1662 # "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
 1663 # "Leubner, Achim" <achim.leubner@intel.com>.
 1664 #
 1665 device          iir
 1666 
 1667 #
 1668 # Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
 1669 # firmware.  These controllers have a SCSI-like interface, and require
 1670 # the CAM infrastructure.
 1671 #
 1672 device          mly
 1673 
 1674 #
 1675 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers.  Only
 1676 # one entry is needed; the code will find and configure all supported
 1677 # controllers.
 1678 #
 1679 device          ida             # Compaq Smart RAID
 1680 device          mlx             # Mylex DAC960
 1681 device          amr             # AMI MegaRAID
 1682 device          amrp            # SCSI Passthrough interface (optional, CAM req.)
 1683 device          mfi             # LSI MegaRAID SAS
 1684 device          mfip            # LSI MegaRAID SAS passthrough, requires CAM
 1685 options         MFI_DEBUG
 1686 device          mrsas           # LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
 1687 
 1688 #
 1689 # 3ware ATA RAID
 1690 #
 1691 device          twe             # 3ware ATA RAID
 1692 
 1693 #
 1694 # Serial ATA host controllers:
 1695 #
 1696 # ahci: Advanced Host Controller Interface (AHCI) compatible
 1697 # mvs:  Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
 1698 # siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
 1699 #
 1700 # These drivers are part of cam(4) subsystem. They supersede less featured
 1701 # ata(4) subsystem drivers, supporting same hardware.
 1702 
 1703 device          ahci
 1704 device          mvs
 1705 device          siis
 1706 
 1707 #
 1708 # The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
 1709 # PC Card devices. You only need one "device ata" for it to find all
 1710 # PCI and PC Card ATA/ATAPI devices on modern machines.
 1711 # Alternatively, individual bus and chipset drivers may be chosen by using
 1712 # the 'atacore' driver then selecting the drivers on a per vendor basis.
 1713 # For example to build a system which only supports a VIA chipset,
 1714 # omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
 1715 device          ata
 1716 
 1717 # Modular ATA
 1718 #device         atacore         # Core ATA functionality
 1719 #device         atacard         # CARDBUS support
 1720 #device         atabus          # PC98 cbus support
 1721 #device         ataisa          # ISA bus support
 1722 #device         atapci          # PCI bus support; only generic chipset support
 1723 
 1724 # PCI ATA chipsets
 1725 #device         ataacard        # ACARD
 1726 #device         ataacerlabs     # Acer Labs Inc. (ALI)
 1727 #device         ataamd          # American Micro Devices (AMD)
 1728 #device         ataati          # ATI
 1729 #device         atacenatek      # Cenatek
 1730 #device         atacypress      # Cypress
 1731 #device         atacyrix        # Cyrix
 1732 #device         atahighpoint    # HighPoint
 1733 #device         ataintel        # Intel
 1734 #device         ataite          # Integrated Technology Inc. (ITE)
 1735 #device         atajmicron      # JMicron
 1736 #device         atamarvell      # Marvell
 1737 #device         atamicron       # Micron
 1738 #device         atanational     # National
 1739 #device         atanetcell      # NetCell
 1740 #device         atanvidia       # nVidia
 1741 #device         atapromise      # Promise
 1742 #device         ataserverworks  # ServerWorks
 1743 #device         atasiliconimage # Silicon Image Inc. (SiI) (formerly CMD)
 1744 #device         atasis          # Silicon Integrated Systems Corp.(SiS)
 1745 #device         atavia          # VIA Technologies Inc.
 1746 
 1747 #
 1748 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
 1749 hint.ata.0.at="isa"
 1750 hint.ata.0.port="0x1f0"
 1751 hint.ata.0.irq="14"
 1752 hint.ata.1.at="isa"
 1753 hint.ata.1.port="0x170"
 1754 hint.ata.1.irq="15"
 1755 
 1756 #
 1757 # The following options are valid on the ATA driver:
 1758 #
 1759 # ATA_STATIC_ID:        controller numbering is static ie depends on location
 1760 #                       else the device numbers are dynamically allocated.
 1761 # ATA_REQUEST_TIMEOUT:  the number of seconds to wait for an ATA request
 1762 #                       before timing out.
 1763 
 1764 options         ATA_STATIC_ID
 1765 #options        ATA_REQUEST_TIMEOUT=10
 1766 
 1767 #
 1768 # Standard floppy disk controllers and floppy tapes, supports
 1769 # the Y-E DATA External FDD (PC Card)
 1770 #
 1771 device          fdc
 1772 hint.fdc.0.at="isa"
 1773 hint.fdc.0.port="0x3F0"
 1774 hint.fdc.0.irq="6"
 1775 hint.fdc.0.drq="2"
 1776 #
 1777 # FDC_DEBUG enables floppy debugging.  Since the debug output is huge, you
 1778 # gotta turn it actually on by setting the variable fd_debug with DDB,
 1779 # however.
 1780 options         FDC_DEBUG
 1781 #
 1782 # Activate this line if you happen to have an Insight floppy tape.
 1783 # Probing them proved to be dangerous for people with floppy disks only,
 1784 # so it's "hidden" behind a flag:
 1785 #hint.fdc.0.flags="1"
 1786 
 1787 # Specify floppy devices
 1788 hint.fd.0.at="fdc0"
 1789 hint.fd.0.drive="0"
 1790 hint.fd.1.at="fdc0"
 1791 hint.fd.1.drive="1"
 1792 
 1793 #
 1794 # uart: newbusified driver for serial interfaces.  It consolidates the sio(4),
 1795 #       sab(4) and zs(4) drivers.
 1796 #
 1797 device          uart
 1798 
 1799 # Options for uart(4)
 1800 options         UART_PPS_ON_CTS         # Do time pulse capturing using CTS
 1801                                         # instead of DCD.
 1802 options         UART_POLL_FREQ          # Set polling rate, used when hw has
 1803                                         # no interrupt support (50 Hz default).
 1804 
 1805 # The following hint should only be used for pure ISA devices.  It is not
 1806 # needed otherwise.  Use of hints is strongly discouraged.
 1807 hint.uart.0.at="isa"
 1808 
 1809 # The following 3 hints are used when the UART is a system device (i.e., a
 1810 # console or debug port), but only on platforms that don't have any other
 1811 # means to pass the information to the kernel.  The unit number of the hint
 1812 # is only used to bundle the hints together.  There is no relation to the
 1813 # unit number of the probed UART.
 1814 hint.uart.0.port="0x3f8"
 1815 hint.uart.0.flags="0x10"
 1816 hint.uart.0.baud="115200"
 1817 
 1818 # `flags' for serial drivers that support consoles like sio(4) and uart(4):
 1819 #       0x10    enable console support for this unit.  Other console flags
 1820 #               (if applicable) are ignored unless this is set.  Enabling
 1821 #               console support does not make the unit the preferred console.
 1822 #               Boot with -h or set boot_serial=YES in the loader.  For sio(4)
 1823 #               specifically, the 0x20 flag can also be set (see above).
 1824 #               Currently, at most one unit can have console support; the
 1825 #               first one (in config file order) with this flag set is
 1826 #               preferred.  Setting this flag for sio0 gives the old behavior.
 1827 #       0x80    use this port for serial line gdb support in ddb.  Also known
 1828 #               as debug port.
 1829 #
 1830 
 1831 # Options for serial drivers that support consoles:
 1832 options         BREAK_TO_DEBUGGER       # A BREAK on a serial console goes to
 1833                                         # ddb, if available.
 1834 
 1835 # Solaris implements a new BREAK which is initiated by a character
 1836 # sequence CR ~ ^b which is similar to a familiar pattern used on
 1837 # Sun servers by the Remote Console.  There are FreeBSD extensions:
 1838 # CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
 1839 options         ALT_BREAK_TO_DEBUGGER
 1840 
 1841 # Serial Communications Controller
 1842 # Supports the Siemens SAB 82532 and Zilog Z8530 multi-channel
 1843 # communications controllers.
 1844 device          scc
 1845 
 1846 # PCI Universal Communications driver
 1847 # Supports various multi port PCI I/O cards.
 1848 device          puc
 1849 
 1850 #
 1851 # Network interfaces:
 1852 #
 1853 # MII bus support is required for many PCI Ethernet NICs,
 1854 # namely those which use MII-compliant transceivers or implement
 1855 # transceiver control interfaces that operate like an MII.  Adding
 1856 # "device miibus" to the kernel config pulls in support for the generic
 1857 # miibus API, the common support for for bit-bang'ing the MII and all
 1858 # of the PHY drivers, including a generic one for PHYs that aren't
 1859 # specifically handled by an individual driver.  Support for specific
 1860 # PHYs may be built by adding "device mii", "device mii_bitbang" if
 1861 # needed by the NIC driver and then adding the appropriate PHY driver.
 1862 device          mii             # Minimal MII support
 1863 device          mii_bitbang     # Common module for bit-bang'ing the MII
 1864 device          miibus          # MII support w/ bit-bang'ing and all PHYs
 1865 
 1866 device          acphy           # Altima Communications AC101
 1867 device          amphy           # AMD AM79c873 / Davicom DM910{1,2}
 1868 device          atphy           # Attansic/Atheros F1
 1869 device          axphy           # Asix Semiconductor AX88x9x
 1870 device          bmtphy          # Broadcom BCM5201/BCM5202 and 3Com 3c905C
 1871 device          brgphy          # Broadcom BCM54xx/57xx 1000baseTX
 1872 device          ciphy           # Cicada/Vitesse CS/VSC8xxx
 1873 device          e1000phy        # Marvell 88E1000 1000/100/10-BT
 1874 device          gentbi          # Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
 1875 device          icsphy          # ICS ICS1889-1893
 1876 device          ip1000phy       # IC Plus IP1000A/IP1001
 1877 device          jmphy           # JMicron JMP211/JMP202
 1878 device          lxtphy          # Level One LXT-970
 1879 device          mlphy           # Micro Linear 6692
 1880 device          nsgphy          # NatSemi DP8361/DP83865/DP83891
 1881 device          nsphy           # NatSemi DP83840A
 1882 device          nsphyter        # NatSemi DP83843/DP83815
 1883 device          pnaphy          # HomePNA
 1884 device          qsphy           # Quality Semiconductor QS6612
 1885 device          rdcphy          # RDC Semiconductor R6040
 1886 device          rgephy          # RealTek 8169S/8110S/8211B/8211C
 1887 device          rlphy           # RealTek 8139
 1888 device          rlswitch        # RealTek 8305
 1889 device          smcphy          # SMSC LAN91C111
 1890 device          tdkphy          # TDK 89Q2120
 1891 device          tlphy           # Texas Instruments ThunderLAN
 1892 device          truephy         # LSI TruePHY
 1893 device          xmphy           # XaQti XMAC II
 1894 
 1895 # an:   Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
 1896 #       PCI and ISA varieties.
 1897 # ae:   Support for gigabit ethernet adapters based on the Attansic/Atheros
 1898 #       L2 PCI-Express FastEthernet controllers.
 1899 # age:  Support for gigabit ethernet adapters based on the Attansic/Atheros
 1900 #       L1 PCI express gigabit ethernet controllers.
 1901 # alc:  Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
 1902 # ale:  Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
 1903 # ath:  Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
 1904 # bce:  Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
 1905 #       adapters.
 1906 # bfe:  Broadcom BCM4401 Ethernet adapter.
 1907 # bge:  Support for gigabit ethernet adapters based on the Broadcom
 1908 #       BCM570x family of controllers, including the 3Com 3c996-T,
 1909 #       the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
 1910 #       the embedded gigE NICs on Dell PowerEdge 2550 servers.
 1911 # bxe:  Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
 1912 #       adapters.
 1913 # bwi:  Broadcom BCM430* and BCM431* family of wireless adapters.
 1914 # bwn:  Broadcom BCM43xx family of wireless adapters.
 1915 # cas:  Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
 1916 # cm:   Arcnet SMC COM90c26 / SMC COM90c56
 1917 #       (and SMC COM90c66 in '56 compatibility mode) adapters.
 1918 # cxgb: Chelsio T3 based 1GbE/10GbE PCIe Ethernet adapters.
 1919 # cxgbe:Chelsio T4 and T5 based 1GbE/10GbE/40GbE PCIe Ethernet adapters.
 1920 # dc:   Support for PCI fast ethernet adapters based on the DEC/Intel 21143
 1921 #       and various workalikes including:
 1922 #       the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
 1923 #       AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
 1924 #       82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
 1925 #       and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
 1926 #       replaces the old al, ax, dm, pn and mx drivers.  List of brands:
 1927 #       Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
 1928 #       SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
 1929 #       LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
 1930 #       KNE110TX.
 1931 # de:   Digital Equipment DC21040
 1932 # em:   Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
 1933 # igb:  Intel Pro/1000 PCI Express Gigabit Ethernet: 82575 and later adapters.
 1934 # ep:   3Com 3C509, 3C529, 3C556, 3C562D, 3C563D, 3C572, 3C574X, 3C579, 3C589
 1935 #       and PC Card devices using these chipsets.
 1936 # ex:   Intel EtherExpress Pro/10 and other i82595-based adapters,
 1937 #       Olicom Ethernet PC Card devices.
 1938 # fe:   Fujitsu MB86960A/MB86965A Ethernet
 1939 # fea:  DEC DEFEA EISA FDDI adapter
 1940 # fpa:  Support for the Digital DEFPA PCI FDDI. `device fddi' is also needed.
 1941 # fxp:  Intel EtherExpress Pro/100B
 1942 #       (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
 1943 # gem:  Apple GMAC/Sun ERI/Sun GEM
 1944 # hme:  Sun HME (Happy Meal Ethernet)
 1945 # jme:  JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
 1946 # le:   AMD Am7900 LANCE and Am79C9xx PCnet
 1947 # lge:  Support for PCI gigabit ethernet adapters based on the Level 1
 1948 #       LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
 1949 #       SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
 1950 # malo: Marvell Libertas wireless NICs.
 1951 # mwl:  Marvell 88W8363 802.11n wireless NICs.
 1952 #       Requires the mwl firmware module
 1953 # mwlfw: Marvell 88W8363 firmware
 1954 # msk:  Support for gigabit ethernet adapters based on the Marvell/SysKonnect
 1955 #       Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
 1956 #       88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
 1957 #       88E8055, 88E8056 and D-Link 560T/550SX.
 1958 # lmc:  Support for the LMC/SBE wide-area network interface cards.
 1959 # mlx5: Mellanox ConnectX-4 and ConnectX-4 LX IB and Eth shared code module.
 1960 # mlx5en:Mellanox ConnectX-4 and ConnectX-4 LX PCIe Ethernet adapters.
 1961 # my:   Myson Fast Ethernet (MTD80X, MTD89X)
 1962 # nge:  Support for PCI gigabit ethernet adapters based on the National
 1963 #       Semiconductor DP83820 and DP83821 chipset. This includes the
 1964 #       SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
 1965 #       GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
 1966 #       EP-320G-TX and the Netgear GA622T.
 1967 # oce:  Emulex 10 Gbit adapters (OneConnect Ethernet)
 1968 # pcn:  Support for PCI fast ethernet adapters based on the AMD Am79c97x
 1969 #       PCnet-FAST, PCnet-FAST+, PCnet-FAST III, PCnet-PRO and PCnet-Home
 1970 #       chipsets. These can also be handled by the le(4) driver if the
 1971 #       pcn(4) driver is left out of the kernel. The le(4) driver does not
 1972 #       support the additional features like the MII bus and burst mode of
 1973 #       the PCnet-FAST and greater chipsets though.
 1974 # ral:  Ralink Technology IEEE 802.11 wireless adapter
 1975 # re:   RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
 1976 # rl:   Support for PCI fast ethernet adapters based on the RealTek 8129/8139
 1977 #       chipset.  Note that the RealTek driver defaults to using programmed
 1978 #       I/O to do register accesses because memory mapped mode seems to cause
 1979 #       severe lockups on SMP hardware.  This driver also supports the
 1980 #       Accton EN1207D `Cheetah' adapter, which uses a chip called
 1981 #       the MPX 5030/5038, which is either a RealTek in disguise or a
 1982 #       RealTek workalike.  Note that the D-Link DFE-530TX+ uses the RealTek
 1983 #       chipset and is supported by this driver, not the 'vr' driver.
 1984 # sf:   Support for Adaptec Duralink PCI fast ethernet adapters based on the
 1985 #       Adaptec AIC-6915 "starfire" controller.
 1986 #       This includes dual and quad port cards, as well as one 100baseFX card.
 1987 #       Most of these are 64-bit PCI devices, except for one single port
 1988 #       card which is 32-bit.
 1989 # sge:  Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
 1990 # sis:  Support for NICs based on the Silicon Integrated Systems SiS 900,
 1991 #       SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
 1992 # sk:   Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
 1993 #       This includes the SK-9841 and SK-9842 single port cards (single mode
 1994 #       and multimode fiber) and the SK-9843 and SK-9844 dual port cards
 1995 #       (also single mode and multimode).
 1996 #       The driver will autodetect the number of ports on the card and
 1997 #       attach each one as a separate network interface.
 1998 # sn:   Support for ISA and PC Card Ethernet devices using the
 1999 #       SMC91C90/92/94/95 chips.
 2000 # ste:  Sundance Technologies ST201 PCI fast ethernet controller, includes
 2001 #       the D-Link DFE-550TX.
 2002 # stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
 2003 #       TC9021 family of controllers, including the Sundance ST2021/ST2023,
 2004 #       the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
 2005 # ti:   Support for PCI gigabit ethernet NICs based on the Alteon Networks
 2006 #       Tigon 1 and Tigon 2 chipsets.  This includes the Alteon AceNIC, the
 2007 #       3Com 3c985, the Netgear GA620 and various others.  Note that you will
 2008 #       probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
 2009 # tl:   Support for the Texas Instruments TNETE100 series 'ThunderLAN'
 2010 #       cards and integrated ethernet controllers.  This includes several
 2011 #       Compaq Netelligent 10/100 cards and the built-in ethernet controllers
 2012 #       in several Compaq Prosignia, Proliant and Deskpro systems.  It also
 2013 #       supports several Olicom 10Mbps and 10/100 boards.
 2014 # tx:   SMC 9432 TX, BTX and FTX cards. (SMC EtherPower II series)
 2015 # txp:  Support for 3Com 3cR990 cards with the "Typhoon" chipset
 2016 # vr:   Support for various fast ethernet adapters based on the VIA
 2017 #       Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
 2018 #       including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
 2019 #       DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
 2020 # vte:  DM&P Vortex86 RDC R6040 Fast Ethernet
 2021 # vx:   3Com 3C590 and 3C595
 2022 # wb:   Support for fast ethernet adapters based on the Winbond W89C840F chip.
 2023 #       Note: this is not the same as the Winbond W89C940F, which is a
 2024 #       NE2000 clone.
 2025 # wi:   Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
 2026 #       the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
 2027 #       bridge with a PCMCIA adapter plugged into it.
 2028 # xe:   Xircom/Intel EtherExpress Pro100/16 PC Card ethernet controller,
 2029 #       Accton Fast EtherCard-16, Compaq Netelligent 10/100 PC Card,
 2030 #       Toshiba 10/100 Ethernet PC Card, Xircom 16-bit Ethernet + Modem 56
 2031 # xl:   Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
 2032 #       Etherlink XL cards and integrated controllers.  This includes the
 2033 #       integrated 3c905B-TX chips in certain Dell Optiplex and Dell
 2034 #       Precision desktop machines and the integrated 3c905-TX chips
 2035 #       in Dell Latitude laptop docking stations.
 2036 #       Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
 2037 
 2038 # Order for ISA/EISA devices is important here
 2039 
 2040 device          cm
 2041 hint.cm.0.at="isa"
 2042 hint.cm.0.port="0x2e0"
 2043 hint.cm.0.irq="9"
 2044 hint.cm.0.maddr="0xdc000"
 2045 device          ep
 2046 device          ex
 2047 device          fe
 2048 hint.fe.0.at="isa"
 2049 hint.fe.0.port="0x300"
 2050 device          fea
 2051 device          sn
 2052 hint.sn.0.at="isa"
 2053 hint.sn.0.port="0x300"
 2054 hint.sn.0.irq="10"
 2055 device          an
 2056 device          wi
 2057 device          xe
 2058 
 2059 # PCI Ethernet NICs that use the common MII bus controller code.
 2060 device          ae              # Attansic/Atheros L2 FastEthernet
 2061 device          age             # Attansic/Atheros L1 Gigabit Ethernet
 2062 device          alc             # Atheros AR8131/AR8132 Ethernet
 2063 device          ale             # Atheros AR8121/AR8113/AR8114 Ethernet
 2064 device          bce             # Broadcom BCM5706/BCM5708 Gigabit Ethernet
 2065 device          bfe             # Broadcom BCM440x 10/100 Ethernet
 2066 device          bge             # Broadcom BCM570xx Gigabit Ethernet
 2067 device          cas             # Sun Cassini/Cassini+ and NS DP83065 Saturn
 2068 device          cxgb            # Chelsio T3 10 Gigabit Ethernet
 2069 device          cxgb_t3fw       # Chelsio T3 10 Gigabit Ethernet firmware
 2070 device          cxgbe           # Chelsio T4 and T5 1GbE/10GbE/40GbE
 2071 device          dc              # DEC/Intel 21143 and various workalikes
 2072 device          et              # Agere ET1310 10/100/Gigabit Ethernet
 2073 device          fxp             # Intel EtherExpress PRO/100B (82557, 82558)
 2074 hint.fxp.0.prefer_iomap="0"
 2075 device          gem             # Apple GMAC/Sun ERI/Sun GEM
 2076 device          hme             # Sun HME (Happy Meal Ethernet)
 2077 device          jme             # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
 2078 device          lge             # Level 1 LXT1001 gigabit Ethernet
 2079 #device         mlx5            # Shared code module between IB and Ethernet
 2080 #device         mlx5en          # Mellanox ConnectX-4 and ConnectX-4 LX
 2081 device          msk             # Marvell/SysKonnect Yukon II Gigabit Ethernet
 2082 device          my              # Myson Fast Ethernet (MTD80X, MTD89X)
 2083 device          nge             # NatSemi DP83820 gigabit Ethernet
 2084 device          re              # RealTek 8139C+/8169/8169S/8110S
 2085 device          rl              # RealTek 8129/8139
 2086 device          pcn             # AMD Am79C97x PCI 10/100 NICs
 2087 device          sf              # Adaptec AIC-6915 (``Starfire'')
 2088 device          sge             # Silicon Integrated Systems SiS190/191
 2089 device          sis             # Silicon Integrated Systems SiS 900/SiS 7016
 2090 device          sk              # SysKonnect SK-984x & SK-982x gigabit Ethernet
 2091 device          ste             # Sundance ST201 (D-Link DFE-550TX)
 2092 device          stge            # Sundance/Tamarack TC9021 gigabit Ethernet
 2093 device          tl              # Texas Instruments ThunderLAN
 2094 device          tx              # SMC EtherPower II (83c170 ``EPIC'')
 2095 device          vr              # VIA Rhine, Rhine II
 2096 device          vte             # DM&P Vortex86 RDC R6040 Fast Ethernet
 2097 device          wb              # Winbond W89C840F
 2098 device          xl              # 3Com 3c90x (``Boomerang'', ``Cyclone'')
 2099 
 2100 # PCI Ethernet NICs.
 2101 device          de              # DEC/Intel DC21x4x (``Tulip'')
 2102 device          em              # Intel Pro/1000 Gigabit Ethernet
 2103 device          igb             # Intel Pro/1000 PCIE Gigabit Ethernet
 2104 device          ixgb            # Intel Pro/10Gbe PCI-X Ethernet
 2105 device          ix              # Intel Pro/10Gbe PCIE Ethernet
 2106 device          ixv             # Intel Pro/10Gbe PCIE Ethernet VF
 2107 device          le              # AMD Am7900 LANCE and Am79C9xx PCnet
 2108 device          mxge            # Myricom Myri-10G 10GbE NIC
 2109 device          nxge            # Neterion Xframe 10GbE Server/Storage Adapter
 2110 device          oce             # Emulex 10 GbE (OneConnect Ethernet)
 2111 device          ti              # Alteon Networks Tigon I/II gigabit Ethernet
 2112 device          txp             # 3Com 3cR990 (``Typhoon'')
 2113 device          vx              # 3Com 3c590, 3c595 (``Vortex'')
 2114 device          vxge            # Exar/Neterion XFrame 3100 10GbE
 2115 
 2116 # PCI FDDI NICs.
 2117 device          fpa
 2118 
 2119 # PCI WAN adapters.
 2120 device          lmc
 2121 
 2122 # PCI IEEE 802.11 Wireless NICs
 2123 device          ath             # Atheros pci/cardbus NIC's
 2124 device          ath_hal         # pci/cardbus chip support
 2125 #device         ath_ar5210      # AR5210 chips
 2126 #device         ath_ar5211      # AR5211 chips
 2127 #device         ath_ar5212      # AR5212 chips
 2128 #device         ath_rf2413
 2129 #device         ath_rf2417
 2130 #device         ath_rf2425
 2131 #device         ath_rf5111
 2132 #device         ath_rf5112
 2133 #device         ath_rf5413
 2134 #device         ath_ar5416      # AR5416 chips
 2135 options         AH_SUPPORT_AR5416       # enable AR5416 tx/rx descriptors
 2136 # All of the AR5212 parts have a problem when paired with the AR71xx
 2137 # CPUS.  These parts have a bug that triggers a fatal bus error on the AR71xx
 2138 # only.  Details of the exact nature of the bug are sketchy, but some can be
 2139 # found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
 2140 # 6.  This option enables this workaround.  There is a performance penalty
 2141 # for this work around, but without it things don't work at all.  The DMA
 2142 # from the card usually bursts 128 bytes, but on the affected CPUs, only
 2143 # 4 are safe.
 2144 options         AH_RXCFG_SDMAMW_4BYTES
 2145 #device         ath_ar9160      # AR9160 chips
 2146 #device         ath_ar9280      # AR9280 chips
 2147 #device         ath_ar9285      # AR9285 chips
 2148 device          ath_rate_sample # SampleRate tx rate control for ath
 2149 device          bwi             # Broadcom BCM430* BCM431*
 2150 device          bwn             # Broadcom BCM43xx
 2151 device          malo            # Marvell Libertas wireless NICs.
 2152 device          mwl             # Marvell 88W8363 802.11n wireless NICs.
 2153 device          mwlfw
 2154 device          ral             # Ralink Technology RT2500 wireless NICs.
 2155 
 2156 # Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
 2157 #options        TI_SF_BUF_JUMBO
 2158 # Turn on the header splitting option for the ti(4) driver firmware.  This
 2159 # only works for Tigon II chips, and has no effect for Tigon I chips.
 2160 # This option requires the TI_SF_BUF_JUMBO option above.
 2161 #options        TI_JUMBO_HDRSPLIT
 2162 
 2163 # These two options allow manipulating the mbuf cluster size and mbuf size,
 2164 # respectively.  Be very careful with NIC driver modules when changing
 2165 # these from their default values, because that can potentially cause a
 2166 # mismatch between the mbuf size assumed by the kernel and the mbuf size
 2167 # assumed by a module.  The only driver that currently has the ability to
 2168 # detect a mismatch is ti(4).
 2169 options         MCLSHIFT=12     # mbuf cluster shift in bits, 12 == 4KB
 2170 options         MSIZE=512       # mbuf size in bytes
 2171 
 2172 #
 2173 # ATM related options (Cranor version)
 2174 # (note: this driver cannot be used with the HARP ATM stack)
 2175 #
 2176 # The `en' device provides support for Efficient Networks (ENI)
 2177 # ENI-155 PCI midway cards, and the Adaptec 155Mbps PCI ATM cards (ANA-59x0).
 2178 #
 2179 # The `hatm' device provides support for Fore/Marconi HE155 and HE622
 2180 # ATM PCI cards.
 2181 #
 2182 # The `fatm' device provides support for Fore PCA200E ATM PCI cards.
 2183 #
 2184 # The `patm' device provides support for IDT77252 based cards like
 2185 # ProSum's ProATM-155 and ProATM-25 and IDT's evaluation boards.
 2186 #
 2187 # atm device provides generic atm functions and is required for
 2188 # atm devices.
 2189 # NATM enables the netnatm protocol family that can be used to
 2190 # bypass TCP/IP.
 2191 #
 2192 # utopia provides the access to the ATM PHY chips and is required for en,
 2193 # hatm and fatm.
 2194 #
 2195 # the current driver supports only PVC operations (no atm-arp, no multicast).
 2196 # for more details, please read the original documents at
 2197 # http://www.ccrc.wustl.edu/pub/chuck/tech/bsdatm/bsdatm.html
 2198 #
 2199 device          atm
 2200 device          en
 2201 device          fatm                    #Fore PCA200E
 2202 device          hatm                    #Fore/Marconi HE155/622
 2203 device          patm                    #IDT77252 cards (ProATM and IDT)
 2204 device          utopia                  #ATM PHY driver
 2205 options         NATM                    #native ATM
 2206 
 2207 options         LIBMBPOOL               #needed by patm, iatm
 2208 
 2209 #
 2210 # Sound drivers
 2211 #
 2212 # sound: The generic sound driver.
 2213 #
 2214 
 2215 device          sound
 2216 
 2217 #
 2218 # snd_*: Device-specific drivers.
 2219 #
 2220 # The flags of the device tell the device a bit more info about the
 2221 # device that normally is obtained through the PnP interface.
 2222 #       bit  2..0   secondary DMA channel;
 2223 #       bit  4      set if the board uses two dma channels;
 2224 #       bit 15..8   board type, overrides autodetection; leave it
 2225 #                   zero if don't know what to put in (and you don't,
 2226 #                   since this is unsupported at the moment...).
 2227 #
 2228 # snd_ad1816:           Analog Devices AD1816 ISA PnP/non-PnP.
 2229 # snd_als4000:          Avance Logic ALS4000 PCI.
 2230 # snd_atiixp:           ATI IXP 200/300/400 PCI.
 2231 # snd_audiocs:          Crystal Semiconductor CS4231 SBus/EBus. Only
 2232 #                       for sparc64.
 2233 # snd_cmi:              CMedia CMI8338/CMI8738 PCI.
 2234 # snd_cs4281:           Crystal Semiconductor CS4281 PCI.
 2235 # snd_csa:              Crystal Semiconductor CS461x/428x PCI. (except
 2236 #                       4281)
 2237 # snd_ds1:              Yamaha DS-1 PCI.
 2238 # snd_emu10k1:          Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
 2239 # snd_emu10kx:          Creative SoundBlaster Live! and Audigy
 2240 # snd_envy24:           VIA Envy24 and compatible, needs snd_spicds.
 2241 # snd_envy24ht:         VIA Envy24HT and compatible, needs snd_spicds.
 2242 # snd_es137x:           Ensoniq AudioPCI ES137x PCI.
 2243 # snd_ess:              Ensoniq ESS ISA PnP/non-PnP, to be used in
 2244 #                       conjunction with snd_sbc.
 2245 # snd_fm801:            Forte Media FM801 PCI.
 2246 # snd_gusc:             Gravis UltraSound ISA PnP/non-PnP.
 2247 # snd_hda:              Intel High Definition Audio (Controller) and
 2248 #                       compatible.
 2249 # snd_hdspe:            RME HDSPe AIO and RayDAT.
 2250 # snd_ich:              Intel ICH AC'97 and some more audio controllers
 2251 #                       embedded in a chipset, for example nVidia
 2252 #                       nForce controllers.
 2253 # snd_maestro:          ESS Technology Maestro-1/2x PCI.
 2254 # snd_maestro3:         ESS Technology Maestro-3/Allegro PCI.
 2255 # snd_mss:              Microsoft Sound System ISA PnP/non-PnP.
 2256 # snd_neomagic:         Neomagic 256 AV/ZX PCI.
 2257 # snd_sb16:             Creative SoundBlaster16, to be used in
 2258 #                       conjunction with snd_sbc.
 2259 # snd_sb8:              Creative SoundBlaster (pre-16), to be used in
 2260 #                       conjunction with snd_sbc.
 2261 # snd_sbc:              Creative SoundBlaster ISA PnP/non-PnP.
 2262 #                       Supports ESS and Avance ISA chips as well.
 2263 # snd_solo:             ESS Solo-1x PCI.
 2264 # snd_spicds:           SPI codec driver, needed by Envy24/Envy24HT drivers.
 2265 # snd_t4dwave:          Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
 2266 #                       M5451 PCI.
 2267 # snd_uaudio:           USB audio.
 2268 # snd_via8233:          VIA VT8233x PCI.
 2269 # snd_via82c686:        VIA VT82C686A PCI.
 2270 # snd_vibes:            S3 Sonicvibes PCI.
 2271 
 2272 device          snd_ad1816
 2273 device          snd_als4000
 2274 device          snd_atiixp
 2275 #device         snd_audiocs
 2276 device          snd_cmi
 2277 device          snd_cs4281
 2278 device          snd_csa
 2279 device          snd_ds1
 2280 device          snd_emu10k1
 2281 device          snd_emu10kx
 2282 device          snd_envy24
 2283 device          snd_envy24ht
 2284 device          snd_es137x
 2285 device          snd_ess
 2286 device          snd_fm801
 2287 device          snd_gusc
 2288 device          snd_hda
 2289 device          snd_hdspe
 2290 device          snd_ich
 2291 device          snd_maestro
 2292 device          snd_maestro3
 2293 device          snd_mss
 2294 device          snd_neomagic
 2295 device          snd_sb16
 2296 device          snd_sb8
 2297 device          snd_sbc
 2298 device          snd_solo
 2299 device          snd_spicds
 2300 device          snd_t4dwave
 2301 device          snd_uaudio
 2302 device          snd_via8233
 2303 device          snd_via82c686
 2304 device          snd_vibes
 2305 
 2306 # For non-PnP sound cards:
 2307 hint.pcm.0.at="isa"
 2308 hint.pcm.0.irq="10"
 2309 hint.pcm.0.drq="1"
 2310 hint.pcm.0.flags="0x0"
 2311 hint.sbc.0.at="isa"
 2312 hint.sbc.0.port="0x220"
 2313 hint.sbc.0.irq="5"
 2314 hint.sbc.0.drq="1"
 2315 hint.sbc.0.flags="0x15"
 2316 hint.gusc.0.at="isa"
 2317 hint.gusc.0.port="0x220"
 2318 hint.gusc.0.irq="5"
 2319 hint.gusc.0.drq="1"
 2320 hint.gusc.0.flags="0x13"
 2321 
 2322 #
 2323 # Following options are intended for debugging/testing purposes:
 2324 #
 2325 # SND_DEBUG                    Enable extra debugging code that includes
 2326 #                              sanity checking and possible increase of
 2327 #                              verbosity.
 2328 #
 2329 # SND_DIAGNOSTIC               Similar in a spirit of INVARIANTS/DIAGNOSTIC,
 2330 #                              zero tolerance against inconsistencies.
 2331 #
 2332 # SND_FEEDER_MULTIFORMAT       By default, only 16/32 bit feeders are compiled
 2333 #                              in. This options enable most feeder converters
 2334 #                              except for 8bit. WARNING: May bloat the kernel.
 2335 #
 2336 # SND_FEEDER_FULL_MULTIFORMAT  Ditto, but includes 8bit feeders as well.
 2337 #
 2338 # SND_FEEDER_RATE_HP           (feeder_rate) High precision 64bit arithmetic
 2339 #                              as much as possible (the default trying to
 2340 #                              avoid it). Possible slowdown.
 2341 #
 2342 # SND_PCM_64                   (Only applicable for i386/32bit arch)
 2343 #                              Process 32bit samples through 64bit
 2344 #                              integer/arithmetic. Slight increase of dynamic
 2345 #                              range at a cost of possible slowdown.
 2346 #
 2347 # SND_OLDSTEREO                Only 2 channels are allowed, effectively
 2348 #                              disabling multichannel processing.
 2349 #
 2350 options         SND_DEBUG
 2351 options         SND_DIAGNOSTIC
 2352 options         SND_FEEDER_MULTIFORMAT
 2353 options         SND_FEEDER_FULL_MULTIFORMAT
 2354 options         SND_FEEDER_RATE_HP
 2355 options         SND_PCM_64
 2356 options         SND_OLDSTEREO
 2357 
 2358 #
 2359 # IEEE-488 hardware:
 2360 # pcii:         PCIIA cards (uPD7210 based isa cards)
 2361 # tnt4882:      National Instruments PCI-GPIB card.
 2362 
 2363 device  pcii
 2364 hint.pcii.0.at="isa"
 2365 hint.pcii.0.port="0x2e1"
 2366 hint.pcii.0.irq="5"
 2367 hint.pcii.0.drq="1"
 2368 
 2369 device  tnt4882
 2370 
 2371 #
 2372 # Miscellaneous hardware:
 2373 #
 2374 # scd: Sony CD-ROM using proprietary (non-ATAPI) interface
 2375 # mcd: Mitsumi CD-ROM using proprietary (non-ATAPI) interface
 2376 # bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
 2377 # joy: joystick (including IO DATA PCJOY PC Card joystick)
 2378 # cmx: OmniKey CardMan 4040 pccard smartcard reader
 2379 
 2380 # Mitsumi CD-ROM
 2381 device          mcd
 2382 hint.mcd.0.at="isa"
 2383 hint.mcd.0.port="0x300"
 2384 # for the Sony CDU31/33A CDROM
 2385 device          scd
 2386 hint.scd.0.at="isa"
 2387 hint.scd.0.port="0x230"
 2388 device          joy                     # PnP aware, hints for non-PnP only
 2389 hint.joy.0.at="isa"
 2390 hint.joy.0.port="0x201"
 2391 device          cmx
 2392 
 2393 #
 2394 # The 'bktr' device is a PCI video capture device using the Brooktree
 2395 # bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
 2396 # TV card, e.g. Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
 2397 # Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
 2398 #
 2399 # options       OVERRIDE_CARD=xxx
 2400 # options       OVERRIDE_TUNER=xxx
 2401 # options       OVERRIDE_MSP=1
 2402 # options       OVERRIDE_DBX=1
 2403 # These options can be used to override the auto detection
 2404 # The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
 2405 # Using sysctl(8) run-time overrides on a per-card basis can be made
 2406 #
 2407 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
 2408 # or
 2409 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
 2410 # Specifies the default video capture mode.
 2411 # This is required for Dual Crystal (28&35MHz) boards where PAL is used
 2412 # to prevent hangs during initialization, e.g. VideoLogic Captivator PCI.
 2413 #
 2414 # options       BKTR_USE_PLL
 2415 # This is required for PAL or SECAM boards with a 28MHz crystal and no 35MHz
 2416 # crystal, e.g. some new Bt878 cards.
 2417 #
 2418 # options       BKTR_GPIO_ACCESS
 2419 # This enables IOCTLs which give user level access to the GPIO port.
 2420 #
 2421 # options       BKTR_NO_MSP_RESET
 2422 # Prevents the MSP34xx reset. Good if you initialize the MSP in another OS first
 2423 #
 2424 # options       BKTR_430_FX_MODE
 2425 # Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
 2426 #
 2427 # options       BKTR_SIS_VIA_MODE
 2428 # Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
 2429 # needed for some old SiS and VIA chipset motherboards.
 2430 # This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
 2431 # motherboards and motherboards with bad or incomplete PCI 2.1 support.
 2432 # As a rough guess, old = before 1998
 2433 #
 2434 # options       BKTR_NEW_MSP34XX_DRIVER
 2435 # Use new, more complete initialization scheme for the msp34* soundchip.
 2436 # Should fix stereo autodetection if the old driver does only output
 2437 # mono sound.
 2438 
 2439 #
 2440 # options       BKTR_USE_FREEBSD_SMBUS
 2441 # Compile with FreeBSD SMBus implementation
 2442 #
 2443 # Brooktree driver has been ported to the new I2C framework. Thus,
 2444 # you'll need to have the following 3 lines in the kernel config.
 2445 #     device smbus
 2446 #     device iicbus
 2447 #     device iicbb
 2448 #     device iicsmb
 2449 # The iic and smb devices are only needed if you want to control other
 2450 # I2C slaves connected to the external connector of some cards.
 2451 #
 2452 device          bktr
 2453  
 2454 #
 2455 # PC Card/PCMCIA and Cardbus
 2456 #
 2457 # cbb: pci/cardbus bridge implementing YENTA interface
 2458 # pccard: pccard slots
 2459 # cardbus: cardbus slots
 2460 device          cbb
 2461 device          pccard
 2462 device          cardbus
 2463 
 2464 #
 2465 # MMC/SD
 2466 #
 2467 # mmc           MMC/SD bus
 2468 # mmcsd         MMC/SD memory card
 2469 # sdhci         Generic PCI SD Host Controller
 2470 #
 2471 device          mmc
 2472 device          mmcsd
 2473 device          sdhci
 2474 
 2475 #
 2476 # SMB bus
 2477 #
 2478 # System Management Bus support is provided by the 'smbus' device.
 2479 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
 2480 # which is a child of the 'smbus' device.
 2481 #
 2482 # Supported devices:
 2483 # smb           standard I/O through /dev/smb*
 2484 #
 2485 # Supported SMB interfaces:
 2486 # iicsmb        I2C to SMB bridge with any iicbus interface
 2487 # bktr          brooktree848 I2C hardware interface
 2488 # intpm         Intel PIIX4 (82371AB, 82443MX) Power Management Unit
 2489 # alpm          Acer Aladdin-IV/V/Pro2 Power Management Unit
 2490 # ichsmb        Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
 2491 # viapm         VIA VT82C586B/596B/686A and VT8233 Power Management Unit
 2492 # amdpm         AMD 756 Power Management Unit
 2493 # amdsmb        AMD 8111 SMBus 2.0 Controller
 2494 # nfpm          NVIDIA nForce Power Management Unit
 2495 # nfsmb         NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
 2496 # ismt          Intel SMBus 2.0 controller chips (on Atom S1200, C2000)
 2497 #
 2498 device          smbus           # Bus support, required for smb below.
 2499 
 2500 device          intpm
 2501 device          alpm
 2502 device          ichsmb
 2503 device          viapm
 2504 device          amdpm
 2505 device          amdsmb
 2506 device          nfpm
 2507 device          nfsmb
 2508 device          ismt
 2509 
 2510 device          smb
 2511 
 2512 #
 2513 # I2C Bus
 2514 #
 2515 # Philips i2c bus support is provided by the `iicbus' device.
 2516 #
 2517 # Supported devices:
 2518 # ic    i2c network interface
 2519 # iic   i2c standard io
 2520 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
 2521 # iicoc simple polling driver for OpenCores I2C controller
 2522 #
 2523 # Supported interfaces:
 2524 # bktr  brooktree848 I2C software interface
 2525 #
 2526 # Other:
 2527 # iicbb generic I2C bit-banging code (needed by lpbb, bktr)
 2528 #
 2529 device          iicbus          # Bus support, required for ic/iic/iicsmb below.
 2530 device          iicbb
 2531 
 2532 device          ic
 2533 device          iic
 2534 device          iicsmb          # smb over i2c bridge
 2535 device          iicoc           # OpenCores I2C controller support
 2536 
 2537 # I2C peripheral devices
 2538 #
 2539 # ds133x        Dallas Semiconductor DS1337, DS1338 and DS1339 RTC
 2540 # ds1374        Dallas Semiconductor DS1374 RTC
 2541 # ds1672        Dallas Semiconductor DS1672 RTC
 2542 # s35390a       Seiko Instruments S-35390A RTC
 2543 #
 2544 device          ds133x
 2545 device          ds1374
 2546 device          ds1672
 2547 device          s35390a
 2548 
 2549 # Parallel-Port Bus
 2550 #
 2551 # Parallel port bus support is provided by the `ppbus' device.
 2552 # Multiple devices may be attached to the parallel port, devices
 2553 # are automatically probed and attached when found.
 2554 #
 2555 # Supported devices:
 2556 # vpo   Iomega Zip Drive
 2557 #       Requires SCSI disk support ('scbus' and 'da'), best
 2558 #       performance is achieved with ports in EPP 1.9 mode.
 2559 # lpt   Parallel Printer
 2560 # plip  Parallel network interface
 2561 # ppi   General-purpose I/O ("Geek Port") + IEEE1284 I/O
 2562 # pps   Pulse per second Timing Interface
 2563 # lpbb  Philips official parallel port I2C bit-banging interface
 2564 # pcfclock Parallel port clock driver.
 2565 #
 2566 # Supported interfaces:
 2567 # ppc   ISA-bus parallel port interfaces.
 2568 #
 2569 
 2570 options         PPC_PROBE_CHIPSET # Enable chipset specific detection
 2571                                   # (see flags in ppc(4))
 2572 options         DEBUG_1284      # IEEE1284 signaling protocol debug
 2573 options         PERIPH_1284     # Makes your computer act as an IEEE1284
 2574                                 # compliant peripheral
 2575 options         DONTPROBE_1284  # Avoid boot detection of PnP parallel devices
 2576 options         VP0_DEBUG       # ZIP/ZIP+ debug
 2577 options         LPT_DEBUG       # Printer driver debug
 2578 options         PPC_DEBUG       # Parallel chipset level debug
 2579 options         PLIP_DEBUG      # Parallel network IP interface debug
 2580 options         PCFCLOCK_VERBOSE         # Verbose pcfclock driver
 2581 options         PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)
 2582 
 2583 device          ppc
 2584 hint.ppc.0.at="isa"
 2585 hint.ppc.0.irq="7"
 2586 device          ppbus
 2587 device          vpo
 2588 device          lpt
 2589 device          plip
 2590 device          ppi
 2591 device          pps
 2592 device          lpbb
 2593 device          pcfclock
 2594 
 2595 # Kernel BOOTP support
 2596 
 2597 options         BOOTP           # Use BOOTP to obtain IP address/hostname
 2598                                 # Requires NFSCLIENT and NFS_ROOT
 2599 options         BOOTP_NFSROOT   # NFS mount root filesystem using BOOTP info
 2600 options         BOOTP_NFSV3     # Use NFS v3 to NFS mount root
 2601 options         BOOTP_COMPAT    # Workaround for broken bootp daemons.
 2602 options         BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
 2603 options         BOOTP_BLOCKSIZE=8192 # Override NFS block size
 2604 
 2605 #
 2606 # Add software watchdog routines.
 2607 #
 2608 options         SW_WATCHDOG
 2609 
 2610 #
 2611 # Add the software deadlock resolver thread.
 2612 #
 2613 options         DEADLKRES
 2614 
 2615 #
 2616 # Disable swapping of stack pages.  This option removes all
 2617 # code which actually performs swapping, so it's not possible to turn
 2618 # it back on at run-time.
 2619 #
 2620 # This is sometimes usable for systems which don't have any swap space
 2621 # (see also sysctls "vm.defer_swapspace_pageouts" and
 2622 # "vm.disable_swapspace_pageouts")
 2623 #
 2624 #options        NO_SWAPPING
 2625 
 2626 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
 2627 # for sendfile(2) that are used to map file VM pages, and normally
 2628 # default to a quantity that is roughly 16*MAXUSERS+512. You would
 2629 # typically want about 4 of these for each simultaneous file send.
 2630 #
 2631 options         NSFBUFS=1024
 2632 
 2633 #
 2634 # Enable extra debugging code for locks.  This stores the filename and
 2635 # line of whatever acquired the lock in the lock itself, and changes a
 2636 # number of function calls to pass around the relevant data.  This is
 2637 # not at all useful unless you are debugging lock code.  Also note
 2638 # that it is likely to break e.g. fstat(1) unless you recompile your
 2639 # userland with -DDEBUG_LOCKS as well.
 2640 #
 2641 options         DEBUG_LOCKS
 2642 
 2643 
 2644 #####################################################################
 2645 # USB support
 2646 # UHCI controller
 2647 device          uhci
 2648 # OHCI controller
 2649 device          ohci
 2650 # EHCI controller
 2651 device          ehci
 2652 # XHCI controller
 2653 device          xhci
 2654 # SL811 Controller
 2655 #device         slhci
 2656 # General USB code (mandatory for USB)
 2657 device          usb
 2658 #
 2659 # USB Double Bulk Pipe devices
 2660 device          udbp
 2661 # USB Fm Radio
 2662 device          ufm
 2663 # USB LED
 2664 device          uled
 2665 # Human Interface Device (anything with buttons and dials)
 2666 device          uhid
 2667 # USB keyboard
 2668 device          ukbd
 2669 # USB printer
 2670 device          ulpt
 2671 # USB mass storage driver (Requires scbus and da)
 2672 device          umass
 2673 # USB mass storage driver for device-side mode
 2674 device          usfs
 2675 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
 2676 device          umct
 2677 # USB modem support
 2678 device          umodem
 2679 # USB mouse
 2680 device          ums
 2681 # USB touchpad(s)
 2682 device          atp
 2683 device          wsp
 2684 # eGalax USB touch screen
 2685 device          uep
 2686 # Diamond Rio 500 MP3 player
 2687 device          urio
 2688 #
 2689 # USB serial support
 2690 device          ucom
 2691 # USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
 2692 device          u3g
 2693 # USB support for Technologies ARK3116 based serial adapters
 2694 device          uark
 2695 # USB support for Belkin F5U103 and compatible serial adapters
 2696 device          ubsa
 2697 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
 2698 device          uftdi
 2699 # USB support for some Windows CE based serial communication.
 2700 device          uipaq
 2701 # USB support for Prolific PL-2303 serial adapters
 2702 device          uplcom
 2703 # USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
 2704 device          uslcom
 2705 # USB Visor and Palm devices
 2706 device          uvisor
 2707 # USB serial support for DDI pocket's PHS
 2708 device          uvscom
 2709 #
 2710 # USB ethernet support
 2711 device          uether
 2712 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
 2713 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
 2714 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
 2715 # eval board.
 2716 device          aue
 2717 
 2718 # ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
 2719 # LinkSys USB200M and various other adapters.
 2720 device          axe
 2721 # ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
 2722 device          axge
 2723 
 2724 #
 2725 # Devices which communicate using Ethernet over USB, particularly
 2726 # Communication Device Class (CDC) Ethernet specification. Supports
 2727 # Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
 2728 device          cdce
 2729 #
 2730 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
 2731 # and Netmate II, and the Belkin F5U111.
 2732 device          cue
 2733 #
 2734 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
 2735 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
 2736 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
 2737 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
 2738 # and 2104USB, and the Corega USB-T.
 2739 device          kue
 2740 #
 2741 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
 2742 # and the GREEN HOUSE GH-USB100B.
 2743 device          rue
 2744 #
 2745 # Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
 2746 device          udav
 2747 #
 2748 # Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
 2749 device          mos
 2750 #
 2751 # HSxPA devices from Option N.V
 2752 device          uhso
 2753 
 2754 # Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
 2755 device          rsu
 2756 #
 2757 # Ralink Technology RT2501USB/RT2601USB wireless driver
 2758 device          rum
 2759 # Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
 2760 device          run
 2761 #
 2762 # Atheros AR5523 wireless driver
 2763 device          uath
 2764 #
 2765 # Conexant/Intersil PrismGT wireless driver
 2766 device          upgt
 2767 #
 2768 # Ralink Technology RT2500USB wireless driver
 2769 device          ural
 2770 #
 2771 # RNDIS USB ethernet driver
 2772 device          urndis
 2773 # Realtek RTL8187B/L wireless driver
 2774 device          urtw
 2775 #
 2776 # Realtek RTL8188CU/RTL8192CU wireless driver
 2777 device          urtwn
 2778 #
 2779 # ZyDas ZD1211/ZD1211B wireless driver
 2780 device          zyd
 2781 #
 2782 # Sierra USB wireless driver
 2783 device          usie
 2784 
 2785 # 
 2786 # debugging options for the USB subsystem
 2787 #
 2788 options         USB_DEBUG
 2789 options         U3G_DEBUG
 2790 
 2791 # options for ukbd:
 2792 options         UKBD_DFLT_KEYMAP        # specify the built-in keymap
 2793 makeoptions     UKBD_DFLT_KEYMAP=it.iso
 2794 
 2795 # options for uplcom:
 2796 options         UPLCOM_INTR_INTERVAL=100        # interrupt pipe interval
 2797                                                 # in milliseconds
 2798 
 2799 # options for uvscom:
 2800 options         UVSCOM_DEFAULT_OPKTSIZE=8       # default output packet size
 2801 options         UVSCOM_INTR_INTERVAL=100        # interrupt pipe interval
 2802                                                 # in milliseconds
 2803 
 2804 #####################################################################
 2805 # FireWire support
 2806 
 2807 device          firewire        # FireWire bus code
 2808 device          sbp             # SCSI over Firewire (Requires scbus and da)
 2809 device          sbp_targ        # SBP-2 Target mode  (Requires scbus and targ)
 2810 device          fwe             # Ethernet over FireWire (non-standard!)
 2811 device          fwip            # IP over FireWire (RFC2734 and RFC3146)
 2812 
 2813 #####################################################################
 2814 # dcons support (Dumb Console Device)
 2815 
 2816 device          dcons                   # dumb console driver
 2817 device          dcons_crom              # FireWire attachment
 2818 options         DCONS_BUF_SIZE=16384    # buffer size
 2819 options         DCONS_POLL_HZ=100       # polling rate
 2820 options         DCONS_FORCE_CONSOLE=0   # force to be the primary console
 2821 options         DCONS_FORCE_GDB=1       # force to be the gdb device
 2822 
 2823 #####################################################################
 2824 # crypto subsystem
 2825 #
 2826 # This is a port of the OpenBSD crypto framework.  Include this when
 2827 # configuring IPSEC and when you have a h/w crypto device to accelerate
 2828 # user applications that link to OpenSSL.
 2829 #
 2830 # Drivers are ports from OpenBSD with some simple enhancements that have
 2831 # been fed back to OpenBSD.
 2832 
 2833 device          crypto          # core crypto support
 2834 device          cryptodev       # /dev/crypto for access to h/w
 2835 
 2836 device          rndtest         # FIPS 140-2 entropy tester
 2837 
 2838 device          hifn            # Hifn 7951, 7781, etc.
 2839 options         HIFN_DEBUG      # enable debugging support: hw.hifn.debug
 2840 options         HIFN_RNDTEST    # enable rndtest support
 2841 
 2842 device          ubsec           # Broadcom 5501, 5601, 58xx
 2843 options         UBSEC_DEBUG     # enable debugging support: hw.ubsec.debug
 2844 options         UBSEC_RNDTEST   # enable rndtest support
 2845 
 2846 #####################################################################
 2847 
 2848 
 2849 #
 2850 # Embedded system options:
 2851 #
 2852 # An embedded system might want to run something other than init.
 2853 options         INIT_PATH=/sbin/init:/rescue/init
 2854 
 2855 # Debug options
 2856 options         BUS_DEBUG       # enable newbus debugging
 2857 options         DEBUG_VFS_LOCKS # enable VFS lock debugging
 2858 options         SOCKBUF_DEBUG   # enable sockbuf last record/mb tail checking
 2859 
 2860 #
 2861 # Verbose SYSINIT
 2862 #
 2863 # Make the SYSINIT process performed by mi_startup() verbose.  This is very
 2864 # useful when porting to a new architecture.  If DDB is also enabled, this
 2865 # will print function names instead of addresses.
 2866 options         VERBOSE_SYSINIT
 2867 
 2868 #####################################################################
 2869 # SYSV IPC KERNEL PARAMETERS
 2870 #
 2871 # Maximum number of System V semaphores that can be used on the system at
 2872 # one time.
 2873 options         SEMMNI=11
 2874 
 2875 # Total number of semaphores system wide
 2876 options         SEMMNS=61
 2877 
 2878 # Total number of undo structures in system
 2879 options         SEMMNU=31
 2880 
 2881 # Maximum number of System V semaphores that can be used by a single process
 2882 # at one time.
 2883 options         SEMMSL=61
 2884 
 2885 # Maximum number of operations that can be outstanding on a single System V
 2886 # semaphore at one time.
 2887 options         SEMOPM=101
 2888 
 2889 # Maximum number of undo operations that can be outstanding on a single
 2890 # System V semaphore at one time.
 2891 options         SEMUME=11
 2892 
 2893 # Maximum number of shared memory pages system wide.
 2894 options         SHMALL=1025
 2895 
 2896 # Maximum size, in bytes, of a single System V shared memory region.
 2897 options         SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
 2898 options         SHMMAXPGS=1025
 2899 
 2900 # Minimum size, in bytes, of a single System V shared memory region.
 2901 options         SHMMIN=2
 2902 
 2903 # Maximum number of shared memory regions that can be used on the system
 2904 # at one time.
 2905 options         SHMMNI=33
 2906 
 2907 # Maximum number of System V shared memory regions that can be attached to
 2908 # a single process at one time.
 2909 options         SHMSEG=9
 2910 
 2911 # Compress user core dumps.
 2912 options         COMPRESS_USER_CORES
 2913 # required to compress file output from kernel for COMPRESS_USER_CORES.
 2914 device          gzio        
 2915 
 2916 # Set the amount of time (in seconds) the system will wait before
 2917 # rebooting automatically when a kernel panic occurs.  If set to (-1),
 2918 # the system will wait indefinitely until a key is pressed on the
 2919 # console.
 2920 options         PANIC_REBOOT_WAIT_TIME=16
 2921 
 2922 # Attempt to bypass the buffer cache and put data directly into the
 2923 # userland buffer for read operation when O_DIRECT flag is set on the
 2924 # file.  Both offset and length of the read operation must be
 2925 # multiples of the physical media sector size.
 2926 #
 2927 options         DIRECTIO
 2928 
 2929 # Specify a lower limit for the number of swap I/O buffers.  They are
 2930 # (among other things) used when bypassing the buffer cache due to
 2931 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
 2932 #
 2933 options         NSWBUF_MIN=120
 2934 
 2935 #####################################################################
 2936 
 2937 # More undocumented options for linting.
 2938 # Note that documenting these is not considered an affront.
 2939 
 2940 options         CAM_DEBUG_DELAY
 2941 
 2942 # VFS cluster debugging.
 2943 options         CLUSTERDEBUG
 2944 
 2945 options         DEBUG
 2946 
 2947 # Kernel filelock debugging.
 2948 options         LOCKF_DEBUG
 2949 
 2950 # System V compatible message queues
 2951 # Please note that the values provided here are used to test kernel
 2952 # building.  The defaults in the sources provide almost the same numbers.
 2953 # MSGSSZ must be a power of 2 between 8 and 1024.
 2954 options         MSGMNB=2049     # Max number of chars in queue
 2955 options         MSGMNI=41       # Max number of message queue identifiers
 2956 options         MSGSEG=2049     # Max number of message segments
 2957 options         MSGSSZ=16       # Size of a message segment
 2958 options         MSGTQL=41       # Max number of messages in system
 2959 
 2960 options         NBUF=512        # Number of buffer headers
 2961 
 2962 options         SCSI_NCR_DEBUG
 2963 options         SCSI_NCR_MAX_SYNC=10000
 2964 options         SCSI_NCR_MAX_WIDE=1
 2965 options         SCSI_NCR_MYADDR=7
 2966 
 2967 options         SC_DEBUG_LEVEL=5        # Syscons debug level
 2968 options         SC_RENDER_DEBUG # syscons rendering debugging
 2969 
 2970 options         VFS_BIO_DEBUG   # VFS buffer I/O debugging
 2971 
 2972 options         KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
 2973 options         KSTACK_USAGE_PROF
 2974 
 2975 # Adaptec Array Controller driver options
 2976 options         AAC_DEBUG       # Debugging levels:
 2977                                 # 0 - quiet, only emit warnings
 2978                                 # 1 - noisy, emit major function
 2979                                 #     points and things done
 2980                                 # 2 - extremely noisy, emit trace
 2981                                 #     items in loops, etc.
 2982 
 2983 # Resource Accounting
 2984 options         RACCT
 2985 
 2986 # Resource Limits
 2987 options         RCTL
 2988 
 2989 # Yet more undocumented options for linting.
 2990 # BKTR_ALLOC_PAGES has no effect except to cause warnings, and
 2991 # BROOKTREE_ALLOC_PAGES hasn't actually been superseded by it, since the
 2992 # driver still mostly spells this option BROOKTREE_ALLOC_PAGES.
 2993 ##options       BKTR_ALLOC_PAGES=(217*4+1)
 2994 options         BROOKTREE_ALLOC_PAGES=(217*4+1)
 2995 options         MAXFILES=999
 2996 
 2997 # Random number generator
 2998 options         RANDOM_YARROW   # Yarrow RNG
 2999 ##options       RANDOM_FORTUNA  # Fortuna RNG - not yet implemented
 3000 options         RANDOM_DEBUG    # Debugging messages
 3001 options         RANDOM_RWFILE   # Read and write entropy cache
 3002 
 3003 # Intel em(4) driver
 3004 options         EM_MULTIQUEUE # Activate multiqueue features/disable MSI-X

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