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

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    1 # $FreeBSD$
    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 #
   54 # The `makeoptions' parameter allows variables to be passed to the
   55 # generated Makefile in the build area.
   56 #
   57 # CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
   58 # after most other flags.  Here we use it to inhibit use of non-optimal
   59 # gcc built-in functions (e.g., memcmp).
   60 #
   61 # DEBUG happens to be magic.
   62 # The following is equivalent to 'config -g KERNELNAME' and creates
   63 # 'kernel.debug' compiled with -g debugging as well as a normal
   64 # 'kernel'.  Use 'make install.debug' to install the debug kernel
   65 # but that isn't normally necessary as the debug symbols are not loaded
   66 # by the kernel and are not useful there anyway.
   67 #
   68 # KERNEL can be overridden so that you can change the default name of your
   69 # kernel.
   70 #
   71 # MODULES_OVERRIDE can be used to limit modules built to a specific list.
   72 #
   73 makeoptions     CONF_CFLAGS=-fno-builtin  #Don't allow use of memcmp, etc.
   74 #makeoptions    DEBUG=-g                #Build kernel with gdb(1) debug symbols
   75 #makeoptions    KERNEL=foo              #Build kernel "foo" and install "/foo"
   76 # Only build ext2fs module plus those parts of the sound system I need.
   77 #makeoptions    MODULES_OVERRIDE="ext2fs sound/sound sound/driver/maestro3"
   78 makeoptions     DESTDIR=/tmp
   79 
   80 #
   81 # FreeBSD processes are subject to certain limits to their consumption
   82 # of system resources.  See getrlimit(2) for more details.  Each
   83 # resource limit has two values, a "soft" limit and a "hard" limit.
   84 # The soft limits can be modified during normal system operation, but
   85 # the hard limits are set at boot time.  Their default values are
   86 # in sys/<arch>/include/vmparam.h.  There are two ways to change them:
   87 # 
   88 # 1.  Set the values at kernel build time.  The options below are one
   89 #     way to allow that limit to grow to 1GB.  They can be increased
   90 #     further by changing the parameters:
   91 #       
   92 # 2.  In /boot/loader.conf, set the tunables kern.maxswzone,
   93 #     kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
   94 #     kern.dflssiz, kern.maxssiz and kern.sgrowsiz.
   95 #
   96 # The options in /boot/loader.conf override anything in the kernel
   97 # configuration file.  See the function init_param1 in
   98 # sys/kern/subr_param.c for more details.
   99 #
  100 
  101 options         MAXDSIZ=(1024UL*1024*1024)
  102 options         MAXSSIZ=(128UL*1024*1024)
  103 options         DFLDSIZ=(1024UL*1024*1024)
  104 
  105 #
  106 # BLKDEV_IOSIZE sets the default block size used in user block
  107 # device I/O.  Note that this value will be overridden by the label
  108 # when specifying a block device from a label with a non-0
  109 # partition blocksize.  The default is PAGE_SIZE.
  110 #
  111 options         BLKDEV_IOSIZE=8192
  112 
  113 #
  114 # MAXPHYS and DFLTPHYS
  115 #
  116 # These are the max and default 'raw' I/O block device access sizes.
  117 # Reads and writes will be split into DFLTPHYS chunks. Some applications
  118 # have better performance with larger raw I/O access sizes. Typically
  119 # MAXPHYS should be twice the size of DFLTPHYS. Note that certain VM
  120 # parameters are derived from these values and making them too large
  121 # can make an an unbootable kernel.
  122 #
  123 # The defaults are 64K and 128K respectively.
  124 options         DFLTPHYS=(64*1024)
  125 options         MAXPHYS=(128*1024)
  126 
  127 
  128 # This allows you to actually store this configuration file into
  129 # the kernel binary itself, where it may be later read by saying:
  130 #    strings -n 3 /boot/kernel/kernel | sed -n 's/^___//p' > MYKERNEL
  131 #
  132 options         INCLUDE_CONFIG_FILE     # Include this file in kernel
  133 
  134 options         GEOM_AES                # Don't use, use GEOM_BDE
  135 options         GEOM_BDE                # Disk encryption.
  136 options         GEOM_BSD                # BSD disklabels
  137 options         GEOM_CACHE              # Disk cache.
  138 options         GEOM_CONCAT             # Disk concatenation.
  139 options         GEOM_ELI                # Disk encryption.
  140 options         GEOM_FOX                # Redundant path mitigation
  141 options         GEOM_GATE               # Userland services.
  142 options         GEOM_JOURNAL            # Journaling.
  143 options         GEOM_LABEL              # Providers labelization.
  144 options         GEOM_MBR                # DOS/MBR partitioning
  145 options         GEOM_MIRROR             # Disk mirroring.
  146 options         GEOM_MULTIPATH          # Disk multipath
  147 options         GEOM_NOP                # Test class.
  148 options         GEOM_PART_APM           # Apple partitioning
  149 options         GEOM_PART_GPT           # GPT partitioning
  150 options         GEOM_PART_MBR           # MBR partitioning
  151 options         GEOM_PC98               # NEC PC9800 partitioning
  152 options         GEOM_RAID3              # RAID3 functionality.
  153 options         GEOM_SHSEC              # Shared secret.
  154 options         GEOM_STRIPE             # Disk striping.
  155 options         GEOM_SUNLABEL           # Sun/Solaris partitioning
  156 options         GEOM_UZIP               # Read-only compressed disks
  157 options         GEOM_VIRSTOR            # Virtual storage.
  158 options         GEOM_VOL                # Volume names from UFS superblock
  159 options         GEOM_ZERO               # Performance testing helper.
  160 
  161 #
  162 # The root device and filesystem type can be compiled in;
  163 # this provides a fallback option if the root device cannot
  164 # be correctly guessed by the bootstrap code, or an override if
  165 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
  166 #
  167 options         ROOTDEVNAME=\"ufs:da0s2e\"
  168 
  169 
  170 #####################################################################
  171 # Scheduler options:
  172 #
  173 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory.  These options
  174 # select which scheduler is compiled in.
  175 #
  176 # SCHED_4BSD is the historical, proven, BSD scheduler.  It has a global run
  177 # queue and no CPU affinity which makes it suboptimal for SMP.  It has very
  178 # good interactivity and priority selection.
  179 #
  180 # SCHED_ULE provides significant performance advantages over 4BSD on many
  181 # workloads on SMP machines.  It supports cpu-affinity, per-cpu runqueues
  182 # and scheduler locks.  It also has a stronger notion of interactivity 
  183 # which leads to better responsiveness even on uniprocessor machines.  This
  184 # will eventually become the default scheduler.
  185 #
  186 options         SCHED_4BSD
  187 #options        SCHED_ULE
  188 
  189 #####################################################################
  190 # SMP OPTIONS:
  191 #
  192 # SMP enables building of a Symmetric MultiProcessor Kernel.
  193 
  194 # Mandatory:
  195 options         SMP                     # Symmetric MultiProcessor Kernel
  196 
  197 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
  198 # if the thread that currently owns the mutex is executing on another
  199 # CPU.  This behaviour is enabled by default, so this option can be used
  200 # to disable it.
  201 options         NO_ADAPTIVE_MUTEXES
  202 
  203 # ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
  204 # if the thread that currently owns the rwlock is executing on another
  205 # CPU.  This behaviour is enabled by default, so this option can be used
  206 # to disable it.
  207 options         NO_ADAPTIVE_RWLOCKS
  208 
  209 # ADAPTIVE_GIANT causes the Giant lock to also be made adaptive when
  210 # running without NO_ADAPTIVE_MUTEXES.  Normally, because Giant is assumed
  211 # to be held for extended periods, contention on Giant will cause a thread
  212 # to sleep rather than spinning.
  213 options         ADAPTIVE_GIANT
  214 
  215 # ADAPTIVE_SX changes the behavior of sx locks to spin if the thread
  216 # that currently owns the lock is executing on another CPU.  Note that
  217 # in addition to enabling this option, individual sx locks must be
  218 # initialized with the SX_ADAPTIVESPIN flag.
  219 options         ADAPTIVE_SX
  220 
  221 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
  222 # operation rather than inlining the simple cases.  This can be used to
  223 # shrink the size of the kernel text segment.  Note that this behavior is
  224 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
  225 # and WITNESS options.
  226 options         MUTEX_NOINLINE
  227 
  228 # RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
  229 # operation rather than inlining the simple cases.  This can be used to
  230 # shrink the size of the kernel text segment.  Note that this behavior is
  231 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
  232 # and WITNESS options.
  233 options         RWLOCK_NOINLINE
  234 
  235 # SX_NOINLINE forces sx lock operations to call functions to perform each
  236 # operation rather than inlining the simple cases.  This can be used to
  237 # shrink the size of the kernel text segment.  Note that this behavior is
  238 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
  239 # and WITNESS options.
  240 options         SX_NOINLINE
  241 
  242 # SMP Debugging Options:
  243 #
  244 # PREEMPTION allows the threads that are in the kernel to be preempted
  245 #         by higher priority threads.  It helps with interactivity and
  246 #         allows interrupt threads to run sooner rather than waiting.
  247 #         WARNING! Only tested on amd64 and i386.
  248 # FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
  249 #         threads.  Its sole use is to expose race conditions and other
  250 #         bugs during development.  Enabling this option will reduce
  251 #         performance and increase the frequency of kernel panics by
  252 #         design.  If you aren't sure that you need it then you don't.
  253 #         Relies on the PREEMPTION option.  DON'T TURN THIS ON.
  254 # MUTEX_DEBUG enables various extra assertions in the mutex code.
  255 # SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
  256 #         used to hold active sleep queues.
  257 # TURNSTILE_PROFILING enables rudimentary profiling of the hash table
  258 #         used to hold active lock queues.
  259 # WITNESS enables the witness code which detects deadlocks and cycles
  260 #         during locking operations.
  261 # WITNESS_KDB causes the witness code to drop into the kernel debugger if
  262 #         a lock hierarchy violation occurs or if locks are held when going to
  263 #         sleep.
  264 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
  265 options         PREEMPTION
  266 options         FULL_PREEMPTION
  267 options         MUTEX_DEBUG
  268 options         WITNESS
  269 options         WITNESS_KDB
  270 options         WITNESS_SKIPSPIN
  271 
  272 # LOCK_PROFILING - Profiling locks.  See LOCK_PROFILING(9) for details.
  273 options         LOCK_PROFILING
  274 # Set the number of buffers and the hash size.  The hash size MUST be larger
  275 # than the number of buffers.  Hash size should be prime.
  276 options         MPROF_BUFFERS="1536"
  277 options         MPROF_HASH_SIZE="1543"
  278 
  279 # Profiling for internal hash tables.
  280 options         SLEEPQUEUE_PROFILING
  281 options         TURNSTILE_PROFILING
  282 
  283 
  284 #####################################################################
  285 # COMPATIBILITY OPTIONS
  286 
  287 #
  288 # Implement system calls compatible with 4.3BSD and older versions of
  289 # FreeBSD.  You probably do NOT want to remove this as much current code
  290 # still relies on the 4.3 emulation.  Note that some architectures that
  291 # are supported by FreeBSD do not include support for certain important
  292 # aspects of this compatibility option, namely those related to the
  293 # signal delivery mechanism.
  294 #
  295 options         COMPAT_43
  296 
  297 # Old tty interface.
  298 options         COMPAT_43TTY
  299 
  300 # Enable FreeBSD4 compatibility syscalls
  301 options         COMPAT_FREEBSD4
  302 
  303 # Enable FreeBSD5 compatibility syscalls
  304 options         COMPAT_FREEBSD5
  305 
  306 # Enable FreeBSD6 compatibility syscalls
  307 options         COMPAT_FREEBSD6
  308 
  309 #
  310 # These three options provide support for System V Interface
  311 # Definition-style interprocess communication, in the form of shared
  312 # memory, semaphores, and message queues, respectively.
  313 #
  314 options         SYSVSHM
  315 options         SYSVSEM
  316 options         SYSVMSG
  317 
  318 
  319 #####################################################################
  320 # DEBUGGING OPTIONS
  321 
  322 #
  323 # Compile with kernel debugger related code.
  324 #
  325 options         KDB
  326 
  327 #
  328 # Print a stack trace of the current thread on the console for a panic.
  329 #
  330 options         KDB_TRACE
  331 
  332 #
  333 # Don't enter the debugger for a panic. Intended for unattended operation
  334 # where you may want to enter the debugger from the console, but still want
  335 # the machine to recover from a panic.
  336 #
  337 options         KDB_UNATTENDED
  338 
  339 #
  340 # Enable the ddb debugger backend.
  341 #
  342 options         DDB
  343 
  344 #
  345 # Print the numerical value of symbols in addition to the symbolic
  346 # representation.
  347 #
  348 options         DDB_NUMSYM
  349 
  350 #
  351 # Enable the remote gdb debugger backend.
  352 #
  353 options         GDB
  354 
  355 #
  356 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
  357 # contents of the registered sysctl nodes on the console.  It is disabled by
  358 # default because it generates excessively verbose console output that can
  359 # interfere with serial console operation.
  360 #
  361 options         SYSCTL_DEBUG
  362 
  363 #
  364 # DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
  365 # for the kernel used to detect modify-after-free scenarios.  See the
  366 # memguard(9) man page for more information on usage.
  367 #
  368 options         DEBUG_MEMGUARD
  369 
  370 #
  371 # DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
  372 # malloc(9).
  373 #
  374 options         DEBUG_REDZONE
  375 
  376 #
  377 # KTRACE enables the system-call tracing facility ktrace(2).  To be more
  378 # SMP-friendly, KTRACE uses a worker thread to process most trace events
  379 # asynchronously to the thread generating the event.  This requires a
  380 # pre-allocated store of objects representing trace events.  The
  381 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
  382 # The size of the pool can be adjusted both at boottime and runtime via
  383 # the kern.ktrace_request_pool tunable and sysctl.
  384 #
  385 options         KTRACE                  #kernel tracing
  386 options         KTRACE_REQUEST_POOL=101
  387 
  388 #
  389 # KTR is a kernel tracing mechanism imported from BSD/OS.  Currently
  390 # it has no userland interface aside from a few sysctl's.  It is
  391 # enabled with the KTR option.  KTR_ENTRIES defines the number of
  392 # entries in the circular trace buffer; it must be a power of two.
  393 # KTR_COMPILE defines the mask of events to compile into the kernel as
  394 # defined by the KTR_* constants in <sys/ktr.h>.  KTR_MASK defines the
  395 # initial value of the ktr_mask variable which determines at runtime
  396 # what events to trace.  KTR_CPUMASK determines which CPU's log
  397 # events, with bit X corresponding to CPU X.  KTR_VERBOSE enables
  398 # dumping of KTR events to the console by default.  This functionality
  399 # can be toggled via the debug.ktr_verbose sysctl and defaults to off
  400 # if KTR_VERBOSE is not defined.
  401 #
  402 options         KTR
  403 options         KTR_ENTRIES=1024
  404 options         KTR_COMPILE=(KTR_INTR|KTR_PROC)
  405 options         KTR_MASK=KTR_INTR
  406 options         KTR_CPUMASK=0x3
  407 options         KTR_VERBOSE
  408 
  409 #
  410 # ALQ(9) is a facility for the asynchronous queuing of records from the kernel
  411 # to a vnode, and is employed by services such as KTR(4) to produce trace
  412 # files based on a kernel event stream.  Records are written asynchronously
  413 # in a worker thread.
  414 #
  415 options         ALQ
  416 options         KTR_ALQ
  417 
  418 #
  419 # The INVARIANTS option is used in a number of source files to enable
  420 # extra sanity checking of internal structures.  This support is not
  421 # enabled by default because of the extra time it would take to check
  422 # for these conditions, which can only occur as a result of
  423 # programming errors.
  424 #
  425 options         INVARIANTS
  426 
  427 #
  428 # The INVARIANT_SUPPORT option makes us compile in support for
  429 # verifying some of the internal structures.  It is a prerequisite for
  430 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
  431 # called.  The intent is that you can set 'INVARIANTS' for single
  432 # source files (by changing the source file or specifying it on the
  433 # command line) if you have 'INVARIANT_SUPPORT' enabled.  Also, if you
  434 # wish to build a kernel module with 'INVARIANTS', then adding
  435 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
  436 # infrastructure without the added overhead.
  437 #
  438 options         INVARIANT_SUPPORT
  439 
  440 #
  441 # The DIAGNOSTIC option is used to enable extra debugging information
  442 # from some parts of the kernel.  As this makes everything more noisy,
  443 # it is disabled by default.
  444 #
  445 options         DIAGNOSTIC
  446 
  447 #
  448 # REGRESSION causes optional kernel interfaces necessary only for regression
  449 # testing to be enabled.  These interfaces may constitute security risks
  450 # when enabled, as they permit processes to easily modify aspects of the
  451 # run-time environment to reproduce unlikely or unusual (possibly normally
  452 # impossible) scenarios.
  453 #
  454 options         REGRESSION
  455 
  456 #
  457 # RESTARTABLE_PANICS allows one to continue from a panic as if it were
  458 # a call to the debugger to continue from a panic as instead.  It is only
  459 # useful if a kernel debugger is present.  To restart from a panic, reset
  460 # the panicstr variable to NULL and continue execution.  This option is
  461 # for development use only and should NOT be used in production systems
  462 # to "workaround" a panic.
  463 #
  464 #options        RESTARTABLE_PANICS
  465 
  466 #
  467 # This option let some drivers co-exist that can't co-exist in a running
  468 # system.  This is used to be able to compile all kernel code in one go for
  469 # quality assurance purposes (like this file, which the option takes it name
  470 # from.)
  471 #
  472 options         COMPILING_LINT
  473 
  474 
  475 #####################################################################
  476 # PERFORMANCE MONITORING OPTIONS
  477 
  478 #
  479 # The hwpmc driver that allows the use of in-CPU performance monitoring
  480 # counters for performance monitoring.  The base kernel needs to configured
  481 # with the 'options' line, while the hwpmc device can be either compiled
  482 # in or loaded as a loadable kernel module.
  483 #
  484 # Additional configuration options may be required on specific architectures,
  485 # please see hwpmc(4).
  486 
  487 device          hwpmc                   # Driver (also a loadable module)
  488 options         HWPMC_HOOKS             # Other necessary kernel hooks
  489 
  490 
  491 #####################################################################
  492 # NETWORKING OPTIONS
  493 
  494 #
  495 # Protocol families
  496 #
  497 options         INET                    #Internet communications protocols
  498 options         INET6                   #IPv6 communications protocols
  499 
  500 # In order to enable IPSEC you MUST also add device crypto to 
  501 # your kernel configuration
  502 options         IPSEC                   #IP security (requires device crypto)
  503 #options        IPSEC_DEBUG             #debug for IP security
  504 #
  505 # Set IPSEC_FILTERTUNNEL to force packets coming through a tunnel
  506 # to be processed by any configured packet filtering twice.
  507 # The default is that packets coming out of a tunnel are _not_ processed;
  508 # they are assumed trusted.
  509 #
  510 # IPSEC history is preserved for such packets, and can be filtered
  511 # using ipfw(8)'s 'ipsec' keyword, when this option is enabled.
  512 #
  513 #options        IPSEC_FILTERTUNNEL      #filter ipsec packets from a tunnel
  514 
  515 options         IPX                     #IPX/SPX communications protocols
  516 
  517 options         NCP                     #NetWare Core protocol
  518 
  519 options         NETATALK                #Appletalk communications protocols
  520 options         NETATALKDEBUG           #Appletalk debugging
  521 
  522 #
  523 # SMB/CIFS requester
  524 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
  525 # options.
  526 options         NETSMB                  #SMB/CIFS requester
  527 
  528 # mchain library. It can be either loaded as KLD or compiled into kernel
  529 options         LIBMCHAIN
  530 
  531 # libalias library, performing NAT
  532 options         LIBALIAS
  533 
  534 #
  535 # SCTP is a NEW transport protocol defined by
  536 # RFC2960 updated by RFC3309 and RFC3758.. and
  537 # soon to have a new base RFC and many many more
  538 # extensions. This release supports all the extensions
  539 # including many drafts (most about to become RFC's).
  540 # It is the premeier SCTP implementation in the NET
  541 # and is quite well tested.
  542 #
  543 # Note YOU MUST have both INET and INET6 defined.
  544 # you don't have to enable V6, but SCTP is 
  545 # dual stacked and so far we have not teased apart
  546 # the V6 and V4.. since an association can span
  547 # both a V6 and V4 address at the SAME time :-)
  548 #
  549 options         SCTP
  550 # There are bunches of options:
  551 # this one turns on all sorts of
  552 # nastly printing that you can
  553 # do. Its all controled by a
  554 # bit mask (settable by socket opt and
  555 # by sysctl). Including will not cause
  556 # logging until you set the bits.. but it
  557 # can be quite verbose.. so without this
  558 # option we don't do any of the tests for
  559 # bits and prints.. which makes the code run
  560 # faster.. if you are not debugging don't use.
  561 options SCTP_DEBUG
  562 #
  563 # This option turns off the CRC32c checksum. Basically
  564 # You will not be able to talk to anyone else that
  565 # has not done this. Its more for expermentation to
  566 # see how much CPU the CRC32c really takes. Most new
  567 # cards for TCP support checksum offload.. so this 
  568 # option gives you a "view" into what SCTP would be
  569 # like with such an offload (which only exists in
  570 # high in iSCSI boards so far). With the new
  571 # splitting 8's algorithm its not as bad as it used
  572 # to be.. but it does speed things up try only
  573 # for in a captured lab environment :-)
  574 options SCTP_WITH_NO_CSUM
  575 #
  576 
  577 #
  578 # All that options after that turn on specific types of
  579 # logging. You can monitor CWND growth, flight size
  580 # and all sorts of things. Go look at the code and
  581 # see. I have used this to produce interesting 
  582 # charts and graphs as well :->
  583 # 
  584 # I have not yet commited the tools to get and print
  585 # the logs, I will do that eventually .. before then
  586 # if you want them send me an email rrs@freebsd.org
  587 # You basically must have KTR enabled for these
  588 # and you then set the sysctl to turn on/off various
  589 # logging bits. Use ktrdump to pull the log and run
  590 # it through a dispaly program.. and graphs and other
  591 # things too.
  592 #
  593 options         SCTP_LOCK_LOGGING
  594 options         SCTP_MBUF_LOGGING
  595 options         SCTP_MBCNT_LOGGING
  596 options         SCTP_PACKET_LOGGING
  597 options         SCTP_LTRACE_CHUNKS
  598 options         SCTP_LTRACE_ERRORS
  599 
  600 
  601 # altq(9). Enable the base part of the hooks with the ALTQ option.
  602 # Individual disciplines must be built into the base system and can not be
  603 # loaded as modules at this point. ALTQ requires a stable TSC so if yours is
  604 # broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
  605 # option.
  606 options         ALTQ
  607 options         ALTQ_CBQ        # Class Bases Queueing
  608 options         ALTQ_RED        # Random Early Detection
  609 options         ALTQ_RIO        # RED In/Out
  610 options         ALTQ_HFSC       # Hierarchical Packet Scheduler
  611 options         ALTQ_CDNR       # Traffic conditioner
  612 options         ALTQ_PRIQ       # Priority Queueing
  613 options         ALTQ_NOPCC      # Required if the TSC is unusable
  614 options         ALTQ_DEBUG
  615 
  616 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
  617 # Individual node types can be enabled with the corresponding option
  618 # listed below; however, this is not strictly necessary as netgraph
  619 # will automatically load the corresponding KLD module if the node type
  620 # is not already compiled into the kernel. Each type below has a
  621 # corresponding man page, e.g., ng_async(8).
  622 options         NETGRAPH                # netgraph(4) system
  623 options         NETGRAPH_DEBUG          # enable extra debugging, this
  624                                         # affects netgraph(4) and nodes
  625 # Node types
  626 options         NETGRAPH_ASYNC
  627 options         NETGRAPH_ATMLLC
  628 options         NETGRAPH_ATM_ATMPIF
  629 options         NETGRAPH_BLUETOOTH              # ng_bluetooth(4)
  630 options         NETGRAPH_BLUETOOTH_BT3C         # ng_bt3c(4)
  631 options         NETGRAPH_BLUETOOTH_H4           # ng_h4(4)
  632 options         NETGRAPH_BLUETOOTH_HCI          # ng_hci(4)
  633 options         NETGRAPH_BLUETOOTH_L2CAP        # ng_l2cap(4)
  634 options         NETGRAPH_BLUETOOTH_SOCKET       # ng_btsocket(4)
  635 options         NETGRAPH_BLUETOOTH_UBT          # ng_ubt(4)
  636 options         NETGRAPH_BLUETOOTH_UBTBCMFW     # ubtbcmfw(4)
  637 options         NETGRAPH_BPF
  638 options         NETGRAPH_BRIDGE
  639 options         NETGRAPH_CAR
  640 options         NETGRAPH_CISCO
  641 options         NETGRAPH_DEFLATE
  642 options         NETGRAPH_DEVICE
  643 options         NETGRAPH_ECHO
  644 options         NETGRAPH_EIFACE
  645 options         NETGRAPH_ETHER
  646 options         NETGRAPH_FEC
  647 options         NETGRAPH_FRAME_RELAY
  648 options         NETGRAPH_GIF
  649 options         NETGRAPH_GIF_DEMUX
  650 options         NETGRAPH_HOLE
  651 options         NETGRAPH_IFACE
  652 options         NETGRAPH_IP_INPUT
  653 options         NETGRAPH_IPFW
  654 options         NETGRAPH_KSOCKET
  655 options         NETGRAPH_L2TP
  656 options         NETGRAPH_LMI
  657 # MPPC compression requires proprietary files (not included)
  658 #options        NETGRAPH_MPPC_COMPRESSION
  659 options         NETGRAPH_MPPC_ENCRYPTION
  660 options         NETGRAPH_NETFLOW
  661 options         NETGRAPH_NAT
  662 options         NETGRAPH_ONE2MANY
  663 options         NETGRAPH_PPP
  664 options         NETGRAPH_PPPOE
  665 options         NETGRAPH_PPTPGRE
  666 options         NETGRAPH_PRED1
  667 options         NETGRAPH_RFC1490
  668 options         NETGRAPH_SOCKET
  669 options         NETGRAPH_SPLIT
  670 options         NETGRAPH_SPPP
  671 options         NETGRAPH_TAG
  672 options         NETGRAPH_TCPMSS
  673 options         NETGRAPH_TEE
  674 options         NETGRAPH_TTY
  675 options         NETGRAPH_UI
  676 options         NETGRAPH_VJC
  677 
  678 # NgATM - Netgraph ATM
  679 options         NGATM_ATM
  680 options         NGATM_ATMBASE
  681 options         NGATM_SSCOP
  682 options         NGATM_SSCFU
  683 options         NGATM_UNI
  684 options         NGATM_CCATM
  685 
  686 device          mn      # Munich32x/Falc54 Nx64kbit/sec cards.
  687 
  688 #
  689 # Network interfaces:
  690 #  The `loop' device is MANDATORY when networking is enabled.
  691 #  The `ether' device provides generic code to handle
  692 #  Ethernets; it is MANDATORY when an Ethernet device driver is
  693 #  configured or token-ring is enabled.
  694 #  The `vlan' device implements the VLAN tagging of Ethernet frames
  695 #  according to IEEE 802.1Q.  It requires `device miibus'.
  696 #  The `wlan' device provides generic code to support 802.11
  697 #  drivers, including host AP mode; it is MANDATORY for the wi,
  698 #  ath, and awi drivers and will eventually be required by all 802.11 drivers.
  699 #  The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
  700 #  support for WEP, TKIP, and AES-CCMP crypto protocols optionally
  701 #  used with 802.11 devices that depend on the `wlan' module.
  702 #  The `wlan_xauth' device provides support for external (i.e. user-mode)
  703 #  authenticators for use with 802.11 drivers that use the `wlan'
  704 #  module and support 802.1x and/or WPA security protocols.
  705 #  The `wlan_acl' device provides a MAC-based access control mechanism
  706 #  for use with 802.11 drivers operating in ap mode and using the
  707 #  `wlan' module.
  708 #  The `fddi' device provides generic code to support FDDI.
  709 #  The `arcnet' device provides generic code to support Arcnet.
  710 #  The `sppp' device serves a similar role for certain types
  711 #  of synchronous PPP links (like `cx', `ar').
  712 #  The `sl' device implements the Serial Line IP (SLIP) service.
  713 #  The `ppp' device implements the Point-to-Point Protocol.
  714 #  The `bpf' device enables the Berkeley Packet Filter.  Be
  715 #  aware of the legal and administrative consequences of enabling this
  716 #  option.  The number of devices determines the maximum number of
  717 #  simultaneous BPF clients programs runnable.  DHCP requires bpf.
  718 #  The `disc' device implements a minimal network interface,
  719 #  which throws away all packets sent and never receives any.  It is
  720 #  included for testing and benchmarking purposes.
  721 #  The `edsc' device implements a minimal Ethernet interface,
  722 #  which discards all packets sent and receives none.
  723 #  The `tap' device is a pty-like virtual Ethernet interface
  724 #  The `tun' device implements (user-)ppp and nos-tun
  725 #  The `gif' device implements IPv6 over IP4 tunneling,
  726 #  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
  727 #  IPv6 over IPv6 tunneling.
  728 #  The `gre' device implements two types of IP4 over IP4 tunneling:
  729 #  GRE and MOBILE, as specified in the RFC1701 and RFC2004.
  730 #  The XBONEHACK option allows the same pair of addresses to be configured on
  731 #  multiple gif interfaces.
  732 #  The `faith' device captures packets sent to it and diverts them
  733 #  to the IPv4/IPv6 translation daemon.
  734 #  The `stf' device implements 6to4 encapsulation.
  735 #  The `ef' device provides support for multiple ethernet frame types
  736 #  specified via ETHER_* options. See ef(4) for details.
  737 #
  738 # The pf packet filter consists of three devices:
  739 #  The `pf' device provides /dev/pf and the firewall code itself.
  740 #  The `pflog' device provides the pflog0 interface which logs packets.
  741 #  The `pfsync' device provides the pfsync0 interface used for
  742 #   synchronization of firewall state tables (over the net).
  743 #
  744 # The PPP_BSDCOMP option enables support for compress(1) style entire
  745 # packet compression, the PPP_DEFLATE is for zlib/gzip style compression.
  746 # PPP_FILTER enables code for filtering the ppp data stream and selecting
  747 # events for resetting the demand dial activity timer - requires bpf.
  748 # See pppd(8) for more details.
  749 #
  750 device          ether                   #Generic Ethernet
  751 device          vlan                    #VLAN support (needs miibus)
  752 device          wlan                    #802.11 support
  753 device          wlan_wep                #802.11 WEP support
  754 device          wlan_ccmp               #802.11 CCMP support
  755 device          wlan_tkip               #802.11 TKIP support
  756 device          wlan_xauth              #802.11 external authenticator support
  757 device          wlan_acl                #802.11 MAC ACL support
  758 device          wlan_amrr               #AMRR transmit rate control algorithm
  759 device          wlan_scan_ap            #802.11 AP mode scanning
  760 device          wlan_scan_sta           #802.11 STA mode scanning
  761 device          token                   #Generic TokenRing
  762 device          fddi                    #Generic FDDI
  763 device          arcnet                  #Generic Arcnet
  764 device          sppp                    #Generic Synchronous PPP
  765 device          loop                    #Network loopback device
  766 device          bpf                     #Berkeley packet filter
  767 device          disc                    #Discard device based on loopback
  768 device          edsc                    #Ethernet discard device
  769 device          tap                     #Virtual Ethernet driver
  770 device          tun                     #Tunnel driver (ppp(8), nos-tun(8))
  771 device          sl                      #Serial Line IP
  772 device          gre                     #IP over IP tunneling
  773 device          if_bridge               #Bridge interface
  774 device          pf                      #PF OpenBSD packet-filter firewall
  775 device          pflog                   #logging support interface for PF
  776 device          pfsync                  #synchronization interface for PF
  777 device          carp                    #Common Address Redundancy Protocol
  778 device          enc                     #IPsec interface
  779 device          ppp                     #Point-to-point protocol
  780 options         PPP_BSDCOMP             #PPP BSD-compress support
  781 options         PPP_DEFLATE             #PPP zlib/deflate/gzip support
  782 options         PPP_FILTER              #enable bpf filtering (needs bpf)
  783 device          lagg                    #Link aggregation interface
  784 
  785 device          ef                      # Multiple ethernet frames support
  786 options         ETHER_II                # enable Ethernet_II frame
  787 options         ETHER_8023              # enable Ethernet_802.3 (Novell) frame
  788 options         ETHER_8022              # enable Ethernet_802.2 frame
  789 options         ETHER_SNAP              # enable Ethernet_802.2/SNAP frame
  790 
  791 # for IPv6
  792 device          gif                     #IPv6 and IPv4 tunneling
  793 options         XBONEHACK
  794 device          faith                   #for IPv6 and IPv4 translation
  795 device          stf                     #6to4 IPv6 over IPv4 encapsulation
  796 
  797 #
  798 # Internet family options:
  799 #
  800 # MROUTING enables the kernel multicast packet forwarder, which works
  801 # with mrouted and XORP.
  802 #
  803 # IPFIREWALL enables support for IP firewall construction, in
  804 # conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
  805 # logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
  806 # limits the number of times a matching entry can be logged.
  807 #
  808 # WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
  809 # and if you do not add other rules during startup to allow access,
  810 # YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
  811 # in /etc/rc.conf when first enabling this feature, then refining the
  812 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
  813 # feature works properly.
  814 #
  815 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
  816 # allow everything.  Use with care, if a cracker can crash your
  817 # firewall machine, they can get to your protected machines.  However,
  818 # if you are using it as an as-needed filter for specific problems as
  819 # they arise, then this may be for you.  Changing the default to 'allow'
  820 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
  821 # out of sync.
  822 #
  823 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''.  It
  824 # depends on IPFIREWALL if compiled into the kernel.
  825 #
  826 # IPFIREWALL_FORWARD enables changing of the packet destination either
  827 # to do some sort of policy routing or transparent proxying.  Used by
  828 # ``ipfw forward''. All  redirections apply to locally generated
  829 # packets too.  Because of this great care is required when
  830 # crafting the ruleset.
  831 #
  832 # IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
  833 # LIBALIAS. To build an ipfw kld with nat support enabled, add 
  834 # "CFLAGS+= -DIPFIREWALL_NAT" to your make.conf.
  835 #
  836 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
  837 # packets without touching the TTL).  This can be useful to hide firewalls
  838 # from traceroute and similar tools.
  839 #
  840 # TCPDEBUG enables code which keeps traces of the TCP state machine
  841 # for sockets with the SO_DEBUG option set, which can then be examined
  842 # using the trpt(8) utility.
  843 #
  844 options         MROUTING                # Multicast routing
  845 options         IPFIREWALL              #firewall
  846 options         IPFIREWALL_VERBOSE      #enable logging to syslogd(8)
  847 options         IPFIREWALL_VERBOSE_LIMIT=100    #limit verbosity
  848 options         IPFIREWALL_DEFAULT_TO_ACCEPT    #allow everything by default
  849 options         IPFIREWALL_FORWARD      #packet destination changes
  850 options         IPFIREWALL_NAT          #ipfw kernel nat support
  851 options         IPDIVERT                #divert sockets
  852 options         IPFILTER                #ipfilter support
  853 options         IPFILTER_LOG            #ipfilter logging
  854 options         IPFILTER_LOOKUP         #ipfilter pools
  855 options         IPFILTER_DEFAULT_BLOCK  #block all packets by default
  856 options         IPSTEALTH               #support for stealth forwarding
  857 options         TCPDEBUG
  858 
  859 # The MBUF_STRESS_TEST option enables options which create
  860 # various random failures / extreme cases related to mbuf
  861 # functions.  See mbuf(9) for a list of available test cases.
  862 options         MBUF_STRESS_TEST
  863 
  864 # Statically Link in accept filters
  865 options         ACCEPT_FILTER_DATA
  866 options         ACCEPT_FILTER_HTTP
  867 
  868 # TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
  869 # carried in TCP option 19. This option is commonly used to protect
  870 # TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
  871 # This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
  872 # This requires the use of 'device crypto', 'options IPSEC'
  873 # or 'device cryptodev'.
  874 #options        TCP_SIGNATURE           #include support for RFC 2385
  875 
  876 # DUMMYNET enables the "dummynet" bandwidth limiter.  You need IPFIREWALL
  877 # as well.  See dummynet(4) and ipfw(8) for more info.  When you run
  878 # DUMMYNET it is advisable to also have "options HZ=1000" to achieve a
  879 # smoother scheduling of the traffic.
  880 options         DUMMYNET
  881 
  882 # Zero copy sockets support.  This enables "zero copy" for sending and
  883 # receiving data via a socket.  The send side works for any type of NIC,
  884 # the receive side only works for NICs that support MTUs greater than the
  885 # page size of your architecture and that support header splitting.  See
  886 # zero_copy(9) for more details.
  887 options         ZERO_COPY_SOCKETS
  888 
  889 #
  890 # ATM (HARP version) options
  891 #
  892 # XXX: These have been disabled in FreeBSD 7.0 as they are not MPSAFE.
  893 #
  894 # ATM_CORE includes the base ATM functionality code.  This must be included
  895 #       for ATM support.
  896 #
  897 # ATM_IP includes support for running IP over ATM.
  898 #
  899 # At least one (and usually only one) of the following signalling managers
  900 # must be included (note that all signalling managers include PVC support):
  901 # ATM_SIGPVC includes support for the PVC-only signalling manager `sigpvc'.
  902 # ATM_SPANS includes support for the `spans' signalling manager, which runs
  903 #       the FORE Systems's proprietary SPANS signalling protocol.
  904 # ATM_UNI includes support for the `uni30' and `uni31' signalling managers,
  905 #       which run the ATM Forum UNI 3.x signalling protocols.
  906 #
  907 # The `hfa' driver provides support for the FORE Systems, Inc.
  908 # PCA-200E ATM PCI Adapter.
  909 #
  910 # The `harp' pseudo-driver makes all NATM interface drivers available to HARP.
  911 #
  912 #options        ATM_CORE                #core ATM protocol family
  913 #options        ATM_IP                  #IP over ATM support
  914 #options        ATM_SIGPVC              #SIGPVC signalling manager
  915 #options        ATM_SPANS               #SPANS signalling manager
  916 #options        ATM_UNI                 #UNI signalling manager
  917 
  918 #device         hfa                     #FORE PCA-200E ATM PCI
  919 #device         harp                    #Pseudo-interface for NATM
  920 
  921 
  922 #####################################################################
  923 # FILESYSTEM OPTIONS
  924 
  925 #
  926 # Only the root, /usr, and /tmp filesystems need be statically
  927 # compiled; everything else will be automatically loaded at mount
  928 # time.  (Exception: the UFS family--- FFS --- cannot
  929 # currently be demand-loaded.)  Some people still prefer to statically
  930 # compile other filesystems as well.
  931 #
  932 # NB: The PORTAL filesystem is known to be buggy, and WILL panic your
  933 # system if you attempt to do anything with it.  It is included here
  934 # as an incentive for some enterprising soul to sit down and fix it.
  935 # The UNION filesystem was known to be buggy in the past.  It is now
  936 # being actively maintained, although there are still some issues being
  937 # resolved.
  938 #
  939 
  940 # One of these is mandatory:
  941 options         FFS                     #Fast filesystem
  942 options         NFSCLIENT               #Network File System client
  943 
  944 # The rest are optional:
  945 options         CD9660                  #ISO 9660 filesystem
  946 options         FDESCFS                 #File descriptor filesystem
  947 options         HPFS                    #OS/2 File system
  948 options         MSDOSFS                 #MS DOS File System (FAT, FAT32)
  949 options         NFSSERVER               #Network File System server
  950 options         NTFS                    #NT File System
  951 options         NULLFS                  #NULL filesystem
  952 # Broken (depends on NCP):
  953 #options        NWFS                    #NetWare filesystem
  954 options         PORTALFS                #Portal filesystem
  955 options         PROCFS                  #Process filesystem (requires PSEUDOFS)
  956 options         PSEUDOFS                #Pseudo-filesystem framework
  957 options         PSEUDOFS_TRACE          #Debugging support for PSEUDOFS
  958 options         SMBFS                   #SMB/CIFS filesystem
  959 options         UDF                     #Universal Disk Format
  960 options         UNIONFS                 #Union filesystem
  961 # The xFS_ROOT options REQUIRE the associated ``options xFS''
  962 options         NFS_ROOT                #NFS usable as root device
  963 
  964 # Soft updates is a technique for improving filesystem speed and
  965 # making abrupt shutdown less risky.
  966 #
  967 options         SOFTUPDATES
  968 
  969 # Extended attributes allow additional data to be associated with files,
  970 # and is used for ACLs, Capabilities, and MAC labels.
  971 # See src/sys/ufs/ufs/README.extattr for more information.
  972 options         UFS_EXTATTR
  973 options         UFS_EXTATTR_AUTOSTART
  974 
  975 # Access Control List support for UFS filesystems.  The current ACL
  976 # implementation requires extended attribute support, UFS_EXTATTR,
  977 # for the underlying filesystem.
  978 # See src/sys/ufs/ufs/README.acls for more information.
  979 options         UFS_ACL
  980 
  981 # Directory hashing improves the speed of operations on very large
  982 # directories at the expense of some memory.
  983 options         UFS_DIRHASH
  984 
  985 # Gjournal-based UFS journaling support.
  986 options         UFS_GJOURNAL
  987 
  988 # Make space in the kernel for a root filesystem on a md device.
  989 # Define to the number of kilobytes to reserve for the filesystem.
  990 options         MD_ROOT_SIZE=10
  991 
  992 # Make the md device a potential root device, either with preloaded
  993 # images of type mfs_root or md_root.
  994 options         MD_ROOT
  995 
  996 # Disk quotas are supported when this option is enabled.
  997 options         QUOTA                   #enable disk quotas
  998 
  999 # If you are running a machine just as a fileserver for PC and MAC
 1000 # users, using SAMBA or Netatalk, you may consider setting this option
 1001 # and keeping all those users' directories on a filesystem that is
 1002 # mounted with the suiddir option. This gives new files the same
 1003 # ownership as the directory (similar to group). It's a security hole
 1004 # if you let these users run programs, so confine it to file-servers
 1005 # (but it'll save you lots of headaches in those cases). Root owned
 1006 # directories are exempt and X bits are cleared. The suid bit must be
 1007 # set on the directory as well; see chmod(1) PC owners can't see/set
 1008 # ownerships so they keep getting their toes trodden on. This saves
 1009 # you all the support calls as the filesystem it's used on will act as
 1010 # they expect: "It's my dir so it must be my file".
 1011 #
 1012 options         SUIDDIR
 1013 
 1014 # NFS options:
 1015 options         NFS_MINATTRTIMO=3       # VREG attrib cache timeout in sec
 1016 options         NFS_MAXATTRTIMO=60
 1017 options         NFS_MINDIRATTRTIMO=30   # VDIR attrib cache timeout in sec
 1018 options         NFS_MAXDIRATTRTIMO=60
 1019 options         NFS_GATHERDELAY=10      # Default write gather delay (msec)
 1020 options         NFS_WDELAYHASHSIZ=16    # and with this
 1021 options         NFS_DEBUG               # Enable NFS Debugging
 1022 
 1023 # Coda stuff:
 1024 options         CODA                    #CODA filesystem.
 1025 device          vcoda                   #coda minicache <-> venus comm.
 1026 # Use the old Coda 5.x venus<->kernel interface instead of the new
 1027 # realms-aware 6.x protocol.
 1028 #options        CODA_COMPAT_5
 1029 
 1030 #
 1031 # Add support for the EXT2FS filesystem of Linux fame.  Be a bit
 1032 # careful with this - the ext2fs code has a tendency to lag behind
 1033 # changes and not be exercised very much, so mounting read/write could
 1034 # be dangerous (and even mounting read only could result in panics.)
 1035 #
 1036 options         EXT2FS
 1037 
 1038 #
 1039 # Add support for the ReiserFS filesystem (used in Linux). Currently,
 1040 # this is limited to read-only access.
 1041 #
 1042 options         REISERFS
 1043 
 1044 #
 1045 # Add support for the SGI XFS filesystem. Currently,
 1046 # this is limited to read-only access.
 1047 #
 1048 options         XFS
 1049 
 1050 # Use real implementations of the aio_* system calls.  There are numerous
 1051 # stability and security issues in the current aio code that make it
 1052 # unsuitable for inclusion on machines with untrusted local users.
 1053 options         VFS_AIO
 1054 
 1055 # Cryptographically secure random number generator; /dev/random
 1056 device          random
 1057 
 1058 # The system memory devices; /dev/mem, /dev/kmem
 1059 device          mem
 1060 
 1061 # Optional character code conversion support with LIBICONV.
 1062 # Each option requires their base file system and LIBICONV.
 1063 options         CD9660_ICONV
 1064 options         MSDOSFS_ICONV
 1065 options         NTFS_ICONV
 1066 options         UDF_ICONV
 1067 
 1068 
 1069 #####################################################################
 1070 # POSIX P1003.1B
 1071 
 1072 # Real time extensions added in the 1993 POSIX
 1073 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
 1074 
 1075 options         _KPOSIX_PRIORITY_SCHEDULING
 1076 # p1003_1b_semaphores are very experimental,
 1077 # user should be ready to assist in debugging if problems arise.
 1078 options         P1003_1B_SEMAPHORES
 1079 
 1080 # POSIX message queue
 1081 options         P1003_1B_MQUEUE
 1082 
 1083 #####################################################################
 1084 # SECURITY POLICY PARAMETERS
 1085 
 1086 # Support for BSM audit
 1087 options         AUDIT
 1088 
 1089 # Support for Mandatory Access Control (MAC):
 1090 options         MAC
 1091 options         MAC_BIBA
 1092 options         MAC_BSDEXTENDED
 1093 options         MAC_IFOFF
 1094 options         MAC_LOMAC
 1095 options         MAC_MLS
 1096 options         MAC_NONE
 1097 options         MAC_PARTITION
 1098 options         MAC_PORTACL
 1099 options         MAC_SEEOTHERUIDS
 1100 options         MAC_STUB
 1101 options         MAC_TEST
 1102 
 1103 
 1104 #####################################################################
 1105 # CLOCK OPTIONS
 1106 
 1107 # The granularity of operation is controlled by the kernel option HZ whose
 1108 # default value (100) means a granularity of 10ms (1s/HZ).
 1109 # Some subsystems, such as DUMMYNET, might benefit from a smaller
 1110 # granularity such as 1ms or less, for a smoother scheduling of packets.
 1111 # Consider, however, that reducing the granularity too much might
 1112 # cause excessive overhead in clock interrupt processing,
 1113 # potentially causing ticks to be missed and thus actually reducing
 1114 # the accuracy of operation.
 1115 
 1116 options         HZ=100
 1117 
 1118 # Enable support for the kernel PLL to use an external PPS signal,
 1119 # under supervision of [x]ntpd(8)
 1120 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
 1121 
 1122 options         PPS_SYNC
 1123 
 1124 
 1125 #####################################################################
 1126 # SCSI DEVICES
 1127 
 1128 # SCSI DEVICE CONFIGURATION
 1129 
 1130 # The SCSI subsystem consists of the `base' SCSI code, a number of
 1131 # high-level SCSI device `type' drivers, and the low-level host-adapter
 1132 # device drivers.  The host adapters are listed in the ISA and PCI
 1133 # device configuration sections below.
 1134 #
 1135 # It is possible to wire down your SCSI devices so that a given bus,
 1136 # target, and LUN always come on line as the same device unit.  In
 1137 # earlier versions the unit numbers were assigned in the order that
 1138 # the devices were probed on the SCSI bus.  This means that if you
 1139 # removed a disk drive, you may have had to rewrite your /etc/fstab
 1140 # file, and also that you had to be careful when adding a new disk
 1141 # as it may have been probed earlier and moved your device configuration
 1142 # around.  (See also option GEOM_VOL for a different solution to this
 1143 # problem.)
 1144 
 1145 # This old behavior is maintained as the default behavior.  The unit
 1146 # assignment begins with the first non-wired down unit for a device
 1147 # type.  For example, if you wire a disk as "da3" then the first
 1148 # non-wired disk will be assigned da4.
 1149 
 1150 # The syntax for wiring down devices is:
 1151 
 1152 hint.scbus.0.at="ahc0"
 1153 hint.scbus.1.at="ahc1"
 1154 hint.scbus.1.bus="0"
 1155 hint.scbus.3.at="ahc2"
 1156 hint.scbus.3.bus="0"
 1157 hint.scbus.2.at="ahc2"
 1158 hint.scbus.2.bus="1"
 1159 hint.da.0.at="scbus0"
 1160 hint.da.0.target="0"
 1161 hint.da.0.unit="0"
 1162 hint.da.1.at="scbus3"
 1163 hint.da.1.target="1"
 1164 hint.da.2.at="scbus2"
 1165 hint.da.2.target="3"
 1166 hint.sa.1.at="scbus1"
 1167 hint.sa.1.target="6"
 1168 
 1169 # "units" (SCSI logical unit number) that are not specified are
 1170 # treated as if specified as LUN 0.
 1171 
 1172 # All SCSI devices allocate as many units as are required.
 1173 
 1174 # The ch driver drives SCSI Media Changer ("jukebox") devices.
 1175 #
 1176 # The da driver drives SCSI Direct Access ("disk") and Optical Media
 1177 # ("WORM") devices.
 1178 #
 1179 # The sa driver drives SCSI Sequential Access ("tape") devices.
 1180 #
 1181 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
 1182 #
 1183 # The ses driver drives SCSI Environment Services ("ses") and
 1184 # SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
 1185 #
 1186 # The pt driver drives SCSI Processor devices.
 1187 #
 1188 # The sg driver provides a passthrough API that is compatible with the
 1189 # Linux SG driver.  It will work in conjunction with the COMPAT_LINUX
 1190 # option to run linux SG apps.  It can also stand on its own and provide
 1191 # source level API compatiblity for porting apps to FreeBSD.
 1192 #
 1193 # Target Mode support is provided here but also requires that a SIM
 1194 # (SCSI Host Adapter Driver) provide support as well.
 1195 #
 1196 # The targ driver provides target mode support as a Processor type device.
 1197 # It exists to give the minimal context necessary to respond to Inquiry
 1198 # commands. There is a sample user application that shows how the rest
 1199 # of the command support might be done in /usr/share/examples/scsi_target.
 1200 #
 1201 # The targbh driver provides target mode support and exists to respond
 1202 # to incoming commands that do not otherwise have a logical unit assigned
 1203 # to them.
 1204 #
 1205 # The "unknown" device (uk? in pre-2.0.5) is now part of the base SCSI
 1206 # configuration as the "pass" driver.
 1207 
 1208 device          scbus           #base SCSI code
 1209 device          ch              #SCSI media changers
 1210 device          da              #SCSI direct access devices (aka disks)
 1211 device          sa              #SCSI tapes
 1212 device          cd              #SCSI CD-ROMs
 1213 device          ses             #SCSI Environmental Services (and SAF-TE)
 1214 device          pt              #SCSI processor
 1215 device          targ            #SCSI Target Mode Code
 1216 device          targbh          #SCSI Target Mode Blackhole Device
 1217 device          pass            #CAM passthrough driver
 1218 device          sg              #Linux SCSI passthrough
 1219 
 1220 # CAM OPTIONS:
 1221 # debugging options:
 1222 # -- NOTE --  If you specify one of the bus/target/lun options, you must
 1223 #             specify them all!
 1224 # CAMDEBUG: When defined enables debugging macros
 1225 # CAM_DEBUG_BUS:  Debug the given bus.  Use -1 to debug all busses.
 1226 # CAM_DEBUG_TARGET:  Debug the given target.  Use -1 to debug all targets.
 1227 # CAM_DEBUG_LUN:  Debug the given lun.  Use -1 to debug all luns.
 1228 # CAM_DEBUG_FLAGS:  OR together CAM_DEBUG_INFO, CAM_DEBUG_TRACE,
 1229 #                   CAM_DEBUG_SUBTRACE, and CAM_DEBUG_CDB
 1230 #
 1231 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
 1232 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
 1233 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
 1234 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
 1235 #             queue after a bus reset, and the number of milliseconds to
 1236 #             freeze the device queue after a bus device reset.  This
 1237 #             can be changed at boot and runtime with the
 1238 #             kern.cam.scsi_delay tunable/sysctl.
 1239 options         CAMDEBUG
 1240 options         CAM_DEBUG_BUS=-1
 1241 options         CAM_DEBUG_TARGET=-1
 1242 options         CAM_DEBUG_LUN=-1
 1243 options         CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_TRACE|CAM_DEBUG_CDB)
 1244 options         CAM_MAX_HIGHPOWER=4
 1245 options         SCSI_NO_SENSE_STRINGS
 1246 options         SCSI_NO_OP_STRINGS
 1247 options         SCSI_DELAY=5000 # Be pessimistic about Joe SCSI device
 1248 
 1249 # Options for the CAM CDROM driver:
 1250 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
 1251 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
 1252 #                           enforced if there is I/O waiting for another LUN
 1253 # The compiled in defaults for these variables are 2 and 10 seconds,
 1254 # respectively.
 1255 #
 1256 # These can also be changed on the fly with the following sysctl variables:
 1257 # kern.cam.cd.changer.min_busy_seconds
 1258 # kern.cam.cd.changer.max_busy_seconds
 1259 #
 1260 options         CHANGER_MIN_BUSY_SECONDS=2
 1261 options         CHANGER_MAX_BUSY_SECONDS=10
 1262 
 1263 # Options for the CAM sequential access driver:
 1264 # SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
 1265 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
 1266 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
 1267 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
 1268 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
 1269 options         SA_IO_TIMEOUT=4
 1270 options         SA_SPACE_TIMEOUT=60
 1271 options         SA_REWIND_TIMEOUT=(2*60)
 1272 options         SA_ERASE_TIMEOUT=(4*60)
 1273 options         SA_1FM_AT_EOD
 1274 
 1275 # Optional timeout for the CAM processor target (pt) device
 1276 # This is specified in seconds.  The default is 60 seconds.
 1277 options         SCSI_PT_DEFAULT_TIMEOUT=60
 1278 
 1279 # Optional enable of doing SES passthrough on other devices (e.g., disks)
 1280 #
 1281 # Normally disabled because a lot of newer SCSI disks report themselves
 1282 # as having SES capabilities, but this can then clot up attempts to build
 1283 # build a topology with the SES device that's on the box these drives
 1284 # are in....
 1285 options         SES_ENABLE_PASSTHROUGH
 1286 
 1287 
 1288 #####################################################################
 1289 # MISCELLANEOUS DEVICES AND OPTIONS
 1290 
 1291 # The `pty' device usually turns out to be ``effectively mandatory'',
 1292 # as it is required for `telnetd', `rlogind', `screen', `emacs', and
 1293 # `xterm', among others.
 1294 
 1295 device          pty             #Pseudo ttys
 1296 device          nmdm            #back-to-back tty devices
 1297 device          md              #Memory/malloc disk
 1298 device          snp             #Snoop device - to look at pty/vty/etc..
 1299 device          ccd             #Concatenated disk driver
 1300 device          firmware        #firmware(9) support
 1301 
 1302 # Kernel side iconv library
 1303 options         LIBICONV
 1304 
 1305 # Size of the kernel message buffer.  Should be N * pagesize.
 1306 options         MSGBUF_SIZE=40960
 1307 
 1308 # Maximum size of a tty or pty input buffer.
 1309 options         TTYHOG=8193
 1310 
 1311 
 1312 #####################################################################
 1313 # HARDWARE DEVICE CONFIGURATION
 1314 
 1315 # For ISA the required hints are listed.
 1316 # EISA, MCA, PCI, CardBus, SD/MMC and pccard are self identifying buses, so
 1317 # no hints are needed.
 1318 
 1319 #
 1320 # Mandatory devices:
 1321 #
 1322 
 1323 # These options are valid for other keyboard drivers as well.
 1324 options         KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
 1325 options         KBD_INSTALL_CDEV        # install a CDEV entry in /dev
 1326 
 1327 options         FB_DEBUG                # Frame buffer debugging
 1328 
 1329 device          splash                  # Splash screen and screen saver support
 1330 
 1331 # Various screen savers.
 1332 device          blank_saver
 1333 device          daemon_saver
 1334 device          dragon_saver
 1335 device          fade_saver
 1336 device          fire_saver
 1337 device          green_saver
 1338 device          logo_saver
 1339 device          rain_saver
 1340 device          snake_saver
 1341 device          star_saver
 1342 device          warp_saver
 1343 
 1344 # The syscons console driver (SCO color console compatible).
 1345 device          sc
 1346 hint.sc.0.at="isa"
 1347 options         MAXCONS=16              # number of virtual consoles
 1348 options         SC_ALT_MOUSE_IMAGE      # simplified mouse cursor in text mode
 1349 options         SC_DFLT_FONT            # compile font in
 1350 makeoptions     SC_DFLT_FONT=cp850
 1351 options         SC_DISABLE_KDBKEY       # disable `debug' key
 1352 options         SC_DISABLE_REBOOT       # disable reboot key sequence
 1353 options         SC_HISTORY_SIZE=200     # number of history buffer lines
 1354 options         SC_MOUSE_CHAR=0x3       # char code for text mode mouse cursor
 1355 options         SC_PIXEL_MODE           # add support for the raster text mode
 1356 
 1357 # The following options will let you change the default colors of syscons.
 1358 options         SC_NORM_ATTR=(FG_GREEN|BG_BLACK)
 1359 options         SC_NORM_REV_ATTR=(FG_YELLOW|BG_GREEN)
 1360 options         SC_KERNEL_CONS_ATTR=(FG_RED|BG_BLACK)
 1361 options         SC_KERNEL_CONS_REV_ATTR=(FG_BLACK|BG_RED)
 1362 
 1363 # The following options will let you change the default behaviour of
 1364 # cut-n-paste feature
 1365 options         SC_CUT_SPACES2TABS      # convert leading spaces into tabs
 1366 options         SC_CUT_SEPCHARS=\"x09\" # set of characters that delimit words
 1367                                         # (default is single space - \"x20\")
 1368 
 1369 # If you have a two button mouse, you may want to add the following option
 1370 # to use the right button of the mouse to paste text.
 1371 options         SC_TWOBUTTON_MOUSE
 1372 
 1373 # You can selectively disable features in syscons.
 1374 options         SC_NO_CUTPASTE
 1375 options         SC_NO_FONT_LOADING
 1376 options         SC_NO_HISTORY
 1377 options         SC_NO_MODE_CHANGE
 1378 options         SC_NO_SYSMOUSE
 1379 options         SC_NO_SUSPEND_VTYSWITCH
 1380 
 1381 # `flags' for sc
 1382 #       0x80    Put the video card in the VESA 800x600 dots, 16 color mode
 1383 #       0x100   Probe for a keyboard device periodically if one is not present
 1384 
 1385 #
 1386 # Optional devices:
 1387 #
 1388 
 1389 #
 1390 # SCSI host adapters:
 1391 #
 1392 # adv: All Narrow SCSI bus AdvanSys controllers.
 1393 # adw: Second Generation AdvanSys controllers including the ADV940UW.
 1394 # aha: Adaptec 154x/1535/1640
 1395 # ahb: Adaptec 174x EISA controllers
 1396 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
 1397 #      19160x/29160x, aic7770/aic78xx
 1398 # ahd: Adaptec 29320/39320 Controllers.
 1399 # aic: Adaptec 6260/6360, APA-1460 (PC Card), NEC PC9801-100 (C-BUS)
 1400 # amd: Support for the AMD 53C974 SCSI host adapter chip as found on devices
 1401 #      such as the Tekram DC-390(T).
 1402 # bt:  Most Buslogic controllers: including BT-445, BT-54x, BT-64x, BT-74x,
 1403 #      BT-75x, BT-946, BT-948, BT-956, BT-958, SDC3211B, SDC3211F, SDC3222F
 1404 # esp: NCR53c9x.  Only for SBUS hardware right now.
 1405 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
 1406 #      ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
 1407 #      ISP 12160 Ultra3 SCSI,
 1408 #      Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
 1409 #      Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
 1410 #      Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
 1411 # ispfw: Firmware module for Qlogic host adapters
 1412 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
 1413 #      or FC9x9 Fibre Channel host adapters.
 1414 # ncr: NCR 53C810, 53C825 self-contained SCSI host adapters.
 1415 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
 1416 #      53C810, 53C810A, 53C815, 53C825,  53C825A, 53C860, 53C875,
 1417 #      53C876, 53C885,  53C895, 53C895A, 53C896,  53C897, 53C1510D,
 1418 #      53C1010-33, 53C1010-66.
 1419 # trm: Tekram DC395U/UW/F DC315U adapters.
 1420 # wds: WD7000
 1421 
 1422 #
 1423 # Note that the order is important in order for Buslogic ISA/EISA cards to be
 1424 # probed correctly.
 1425 #
 1426 device          bt
 1427 hint.bt.0.at="isa"
 1428 hint.bt.0.port="0x330"
 1429 device          adv
 1430 hint.adv.0.at="isa"
 1431 device          adw
 1432 device          aha
 1433 hint.aha.0.at="isa"
 1434 device          aic
 1435 hint.aic.0.at="isa"
 1436 device          ahb
 1437 device          ahc
 1438 device          ahd
 1439 device          amd
 1440 device          esp
 1441 device          iscsi_initiator
 1442 device          isp
 1443 hint.isp.0.disable="1"
 1444 hint.isp.0.role="3"
 1445 hint.isp.0.prefer_iomap="1"
 1446 hint.isp.0.prefer_memmap="1"
 1447 hint.isp.0.fwload_disable="1"
 1448 hint.isp.0.ignore_nvram="1"
 1449 hint.isp.0.fullduplex="1"
 1450 hint.isp.0.topology="lport"
 1451 hint.isp.0.topology="nport"
 1452 hint.isp.0.topology="lport-only"
 1453 hint.isp.0.topology="nport-only"
 1454 # we can't get u_int64_t types, nor can we get strings if it's got
 1455 # a leading 0x, hence this silly dodge.
 1456 hint.isp.0.portwnn="w50000000aaaa0000"
 1457 hint.isp.0.nodewnn="w50000000aaaa0001"
 1458 device          ispfw
 1459 device          mpt
 1460 device          ncr
 1461 device          sym
 1462 device          trm
 1463 device          wds
 1464 hint.wds.0.at="isa"
 1465 hint.wds.0.port="0x350"
 1466 hint.wds.0.irq="11"
 1467 hint.wds.0.drq="6"
 1468 
 1469 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
 1470 # controllers that have it configured only if this option is set. Unfortunately,
 1471 # this doesn't work on some motherboards, which prevents it from being the
 1472 # default.
 1473 options         AHC_ALLOW_MEMIO
 1474 
 1475 # Dump the contents of the ahc controller configuration PROM.
 1476 options         AHC_DUMP_EEPROM
 1477 
 1478 # Bitmap of units to enable targetmode operations.
 1479 options         AHC_TMODE_ENABLE
 1480 
 1481 # Compile in Aic7xxx Debugging code.
 1482 options         AHC_DEBUG
 1483 
 1484 # Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
 1485 options         AHC_DEBUG_OPTS
 1486 
 1487 # Print register bitfields in debug output.  Adds ~128k to driver
 1488 # See ahc(4).
 1489 options         AHC_REG_PRETTY_PRINT
 1490 
 1491 # Compile in aic79xx debugging code.
 1492 options         AHD_DEBUG
 1493 
 1494 # Aic79xx driver debugging options.  Adds ~215k to driver.  See ahd(4).
 1495 options         AHD_DEBUG_OPTS=0xFFFFFFFF
 1496 
 1497 # Print human-readable register definitions when debugging
 1498 options         AHD_REG_PRETTY_PRINT
 1499 
 1500 # Bitmap of units to enable targetmode operations.
 1501 options         AHD_TMODE_ENABLE
 1502 
 1503 # The adw driver will attempt to use memory mapped I/O for all PCI
 1504 # controllers that have it configured only if this option is set.
 1505 options         ADW_ALLOW_MEMIO
 1506 
 1507 # Options used in dev/iscsi (Software iSCSI stack)
 1508 #
 1509 options         ISCSI_INITIATOR_DEBUG=9
 1510 
 1511 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
 1512 #
 1513 #       ISP_TARGET_MODE         -       enable target mode operation
 1514 #
 1515 options         ISP_TARGET_MODE=1
 1516 #
 1517 #       ISP_DEFAULT_ROLES       -       default role
 1518 #               none=0
 1519 #               target=1
 1520 #               initiator=2
 1521 #               both=3                  (not supported currently)
 1522 #
 1523 options         ISP_DEFAULT_ROLES=2
 1524 
 1525 # Options used in dev/sym/ (Symbios SCSI driver).
 1526 #options        SYM_SETUP_LP_PROBE_MAP  #-Low Priority Probe Map (bits)
 1527                                         # Allows the ncr to take precedence
 1528                                         # 1 (1<<0) -> 810a, 860
 1529                                         # 2 (1<<1) -> 825a, 875, 885, 895
 1530                                         # 4 (1<<2) -> 895a, 896, 1510d
 1531 #options        SYM_SETUP_SCSI_DIFF     #-HVD support for 825a, 875, 885
 1532                                         # disabled:0 (default), enabled:1
 1533 #options        SYM_SETUP_PCI_PARITY    #-PCI parity checking
 1534                                         # disabled:0, enabled:1 (default)
 1535 #options        SYM_SETUP_MAX_LUN       #-Number of LUNs supported
 1536                                         # default:8, range:[1..64]
 1537 
 1538 # The 'dpt' driver provides support for old DPT controllers (http://www.dpt.com/).
 1539 # These have hardware RAID-{0,1,5} support, and do multi-initiator I/O.
 1540 # The DPT controllers are commonly re-licensed under other brand-names -
 1541 # some controllers by Olivetti, Dec, HP, AT&T, SNI, AST, Alphatronic, NEC and
 1542 # Compaq are actually DPT controllers.
 1543 #
 1544 # See src/sys/dev/dpt for debugging and other subtle options.
 1545 #   DPT_MEASURE_PERFORMANCE Enables a set of (semi)invasive metrics. Various
 1546 #                           instruments are enabled.  The tools in
 1547 #                           /usr/sbin/dpt_* assume these to be enabled.
 1548 #   DPT_HANDLE_TIMEOUTS     Normally device timeouts are handled by the DPT.
 1549 #                           If you ant the driver to handle timeouts, enable
 1550 #                           this option.  If your system is very busy, this
 1551 #                           option will create more trouble than solve.
 1552 #   DPT_TIMEOUT_FACTOR      Used to compute the excessive amount of time to
 1553 #                           wait when timing out with the above option.
 1554 #  DPT_DEBUG_xxxx           These are controllable from sys/dev/dpt/dpt.h
 1555 #  DPT_LOST_IRQ             When enabled, will try, once per second, to catch
 1556 #                           any interrupt that got lost.  Seems to help in some
 1557 #                           DPT-firmware/Motherboard combinations.  Minimal
 1558 #                           cost, great benefit.
 1559 #  DPT_RESET_HBA            Make "reset" actually reset the controller
 1560 #                           instead of fudging it.  Only enable this if you
 1561 #                           are 100% certain you need it.
 1562 
 1563 device          dpt
 1564 
 1565 # DPT options
 1566 #!CAM# options  DPT_MEASURE_PERFORMANCE
 1567 #!CAM# options  DPT_HANDLE_TIMEOUTS
 1568 options         DPT_TIMEOUT_FACTOR=4
 1569 options         DPT_LOST_IRQ
 1570 options         DPT_RESET_HBA
 1571 
 1572 #
 1573 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
 1574 # These controllers have a SCSI-like interface, and require the
 1575 # CAM infrastructure.
 1576 #
 1577 device          ciss
 1578 
 1579 #
 1580 # Intel Integrated RAID controllers.
 1581 # This driver was developed and is maintained by Intel.  Contacts
 1582 # at Intel for this driver are
 1583 # "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
 1584 # "Leubner, Achim" <achim.leubner@intel.com>.
 1585 #
 1586 device          iir
 1587 
 1588 #
 1589 # Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
 1590 # firmware.  These controllers have a SCSI-like interface, and require
 1591 # the CAM infrastructure.
 1592 #
 1593 device          mly
 1594 
 1595 #
 1596 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers.  Only
 1597 # one entry is needed; the code will find and configure all supported
 1598 # controllers.
 1599 #
 1600 device          ida             # Compaq Smart RAID
 1601 device          mlx             # Mylex DAC960
 1602 device          amr             # AMI MegaRAID
 1603 device          mfi             # LSI MegaRAID SAS
 1604 device          mfip            # LSI MegaRAID SAS passthrough, requires CAM
 1605 options         MFI_DEBUG
 1606 
 1607 #
 1608 # 3ware ATA RAID
 1609 #
 1610 device          twe             # 3ware ATA RAID
 1611 
 1612 #
 1613 # The 'ATA' driver supports all ATA and ATAPI devices, including PC Card
 1614 # devices. You only need one "device ata" for it to find all
 1615 # PCI and PC Card ATA/ATAPI devices on modern machines.
 1616 device          ata
 1617 device          atadisk         # ATA disk drives
 1618 device          ataraid         # ATA RAID drives
 1619 device          atapicd         # ATAPI CDROM drives
 1620 device          atapifd         # ATAPI floppy drives
 1621 device          atapist         # ATAPI tape drives
 1622 device          atapicam        # emulate ATAPI devices as SCSI ditto via CAM
 1623                                 # needs CAM to be present (scbus & pass)
 1624 #
 1625 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
 1626 hint.ata.0.at="isa"
 1627 hint.ata.0.port="0x1f0"
 1628 hint.ata.0.irq="14"
 1629 hint.ata.1.at="isa"
 1630 hint.ata.1.port="0x170"
 1631 hint.ata.1.irq="15"
 1632 
 1633 #
 1634 # The following options are valid on the ATA driver:
 1635 #
 1636 # ATA_STATIC_ID:        controller numbering is static ie depends on location
 1637 #                       else the device numbers are dynamically allocated.
 1638 
 1639 options         ATA_STATIC_ID
 1640 
 1641 #
 1642 # Standard floppy disk controllers and floppy tapes, supports
 1643 # the Y-E DATA External FDD (PC Card)
 1644 #
 1645 device          fdc
 1646 hint.fdc.0.at="isa"
 1647 hint.fdc.0.port="0x3F0"
 1648 hint.fdc.0.irq="6"
 1649 hint.fdc.0.drq="2"
 1650 #
 1651 # FDC_DEBUG enables floppy debugging.  Since the debug output is huge, you
 1652 # gotta turn it actually on by setting the variable fd_debug with DDB,
 1653 # however.
 1654 options         FDC_DEBUG
 1655 #
 1656 # Activate this line if you happen to have an Insight floppy tape.
 1657 # Probing them proved to be dangerous for people with floppy disks only,
 1658 # so it's "hidden" behind a flag:
 1659 #hint.fdc.0.flags="1"
 1660 
 1661 # Specify floppy devices
 1662 hint.fd.0.at="fdc0"
 1663 hint.fd.0.drive="0"
 1664 hint.fd.1.at="fdc0"
 1665 hint.fd.1.drive="1"
 1666 
 1667 #
 1668 # uart: newbusified driver for serial interfaces.  It consolidates the sio(4),
 1669 #       sab(4) and zs(4) drivers.
 1670 #
 1671 device          uart
 1672 
 1673 # Options for uart(4)
 1674 options         UART_PPS_ON_CTS         # Do time pulse capturing using CTS
 1675                                         # instead of DCD.
 1676 
 1677 # The following hint should only be used for pure ISA devices.  It is not
 1678 # needed otherwise.  Use of hints is strongly discouraged.
 1679 hint.uart.0.at="isa"
 1680 
 1681 # The following 3 hints are used when the UART is a system device (i.e., a
 1682 # console or debug port), but only on platforms that don't have any other
 1683 # means to pass the information to the kernel.  The unit number of the hint
 1684 # is only used to bundle the hints together.  There is no relation to the
 1685 # unit number of the probed UART.
 1686 hint.uart.0.port="0x3f8"
 1687 hint.uart.0.flags="0x10"
 1688 hint.uart.0.baud="115200"
 1689 
 1690 # `flags' for serial drivers that support consoles like sio(4) and uart(4):
 1691 #       0x10    enable console support for this unit.  Other console flags
 1692 #               (if applicable) are ignored unless this is set.  Enabling
 1693 #               console support does not make the unit the preferred console.
 1694 #               Boot with -h or set boot_serial=YES in the loader.  For sio(4)
 1695 #               specifically, the 0x20 flag can also be set (see above).
 1696 #               Currently, at most one unit can have console support; the
 1697 #               first one (in config file order) with this flag set is
 1698 #               preferred.  Setting this flag for sio0 gives the old behaviour.
 1699 #       0x80    use this port for serial line gdb support in ddb.  Also known
 1700 #               as debug port.
 1701 #
 1702 
 1703 # Options for serial drivers that support consoles:
 1704 options         BREAK_TO_DEBUGGER       # A BREAK on a serial console goes to
 1705                                         # ddb, if available.
 1706 
 1707 # Solaris implements a new BREAK which is initiated by a character
 1708 # sequence CR ~ ^b which is similar to a familiar pattern used on
 1709 # Sun servers by the Remote Console.
 1710 options         ALT_BREAK_TO_DEBUGGER
 1711 
 1712 # Serial Communications Controller
 1713 # Supports the Siemens SAB 82532 and Zilog Z8530 multi-channel
 1714 # communications controllers.
 1715 device          scc
 1716 
 1717 # PCI Universal Communications driver
 1718 # Supports various multi port PCI I/O cards.
 1719 device          puc
 1720 
 1721 #
 1722 # Network interfaces:
 1723 #
 1724 # MII bus support is required for some PCI 10/100 ethernet NICs,
 1725 # namely those which use MII-compliant transceivers or implement
 1726 # transceiver control interfaces that operate like an MII. Adding
 1727 # "device miibus0" to the kernel config pulls in support for
 1728 # the generic miibus API and all of the PHY drivers, including a
 1729 # generic one for PHYs that aren't specifically handled by an
 1730 # individual driver.
 1731 device          miibus
 1732 
 1733 # an:   Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
 1734 #       PCI and ISA varieties.
 1735 # awi:  Support for IEEE 802.11 PC Card devices using the AMD Am79C930 and
 1736 #       Harris (Intersil) Chipset with PCnetMobile firmware by AMD.
 1737 # bce:  Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
 1738 #       adapters.
 1739 # bfe:  Broadcom BCM4401 Ethernet adapter.
 1740 # bge:  Support for gigabit ethernet adapters based on the Broadcom
 1741 #       BCM570x family of controllers, including the 3Com 3c996-T,
 1742 #       the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
 1743 #       the embedded gigE NICs on Dell PowerEdge 2550 servers.
 1744 # cm:   Arcnet SMC COM90c26 / SMC COM90c56
 1745 #       (and SMC COM90c66 in '56 compatibility mode) adapters.
 1746 # cnw:  Xircom CNW/Netware Airsurfer PC Card adapter
 1747 # dc:   Support for PCI fast ethernet adapters based on the DEC/Intel 21143
 1748 #       and various workalikes including:
 1749 #       the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
 1750 #       AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
 1751 #       82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
 1752 #       and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
 1753 #       replaces the old al, ax, dm, pn and mx drivers.  List of brands:
 1754 #       Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
 1755 #       SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
 1756 #       LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
 1757 #       KNE110TX.
 1758 # de:   Digital Equipment DC21040
 1759 # em:   Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
 1760 # ep:   3Com 3C509, 3C529, 3C556, 3C562D, 3C563D, 3C572, 3C574X, 3C579, 3C589
 1761 #       and PC Card devices using these chipsets.
 1762 # ex:   Intel EtherExpress Pro/10 and other i82595-based adapters,
 1763 #       Olicom Ethernet PC Card devices.
 1764 # fe:   Fujitsu MB86960A/MB86965A Ethernet
 1765 # fea:  DEC DEFEA EISA FDDI adapter
 1766 # fpa:  Support for the Digital DEFPA PCI FDDI. `device fddi' is also needed.
 1767 # fxp:  Intel EtherExpress Pro/100B
 1768 #       (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
 1769 # gem:  Apple GMAC/Sun ERI/Sun GEM
 1770 # hme:  Sun HME (Happy Meal Ethernet)
 1771 # le:   AMD Am7900 LANCE and Am79C9xx PCnet
 1772 # lge:  Support for PCI gigabit ethernet adapters based on the Level 1
 1773 #       LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
 1774 #       SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
 1775 # msk:  Support for gigabit ethernet adapters based on the Marvell/SysKonnect
 1776 #       Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
 1777 #       88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
 1778 #       88E8055, 88E8056 and D-Link 560T/550SX.
 1779 # lmc:  Support for the LMC/SBE wide-area network interface cards.
 1780 # my:   Myson Fast Ethernet (MTD80X, MTD89X)
 1781 # nge:  Support for PCI gigabit ethernet adapters based on the National
 1782 #       Semiconductor DP83820 and DP83821 chipset. This includes the
 1783 #       SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
 1784 #       GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
 1785 #       EP-320G-TX and the Netgear GA622T.
 1786 # pcn:  Support for PCI fast ethernet adapters based on the AMD Am79c97x
 1787 #       PCnet-FAST, PCnet-FAST+, PCnet-FAST III, PCnet-PRO and PCnet-Home
 1788 #       chipsets. These can also be handled by the le(4) driver if the
 1789 #       pcn(4) driver is left out of the kernel. The le(4) driver does not
 1790 #       support the additional features like the MII bus and burst mode of
 1791 #       the PCnet-FAST and greater chipsets though.
 1792 # rl:   Support for PCI fast ethernet adapters based on the RealTek 8129/8139
 1793 #       chipset.  Note that the RealTek driver defaults to using programmed
 1794 #       I/O to do register accesses because memory mapped mode seems to cause
 1795 #       severe lockups on SMP hardware.  This driver also supports the
 1796 #       Accton EN1207D `Cheetah' adapter, which uses a chip called
 1797 #       the MPX 5030/5038, which is either a RealTek in disguise or a
 1798 #       RealTek workalike.  Note that the D-Link DFE-530TX+ uses the RealTek
 1799 #       chipset and is supported by this driver, not the 'vr' driver.
 1800 # sf:   Support for Adaptec Duralink PCI fast ethernet adapters based on the
 1801 #       Adaptec AIC-6915 "starfire" controller.
 1802 #       This includes dual and quad port cards, as well as one 100baseFX card.
 1803 #       Most of these are 64-bit PCI devices, except for one single port
 1804 #       card which is 32-bit.
 1805 # sis:  Support for NICs based on the Silicon Integrated Systems SiS 900,
 1806 #       SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
 1807 # sbsh: Support for Granch SBNI16 SHDSL modem PCI adapters
 1808 # sk:   Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
 1809 #       This includes the SK-9841 and SK-9842 single port cards (single mode
 1810 #       and multimode fiber) and the SK-9843 and SK-9844 dual port cards
 1811 #       (also single mode and multimode).
 1812 #       The driver will autodetect the number of ports on the card and
 1813 #       attach each one as a separate network interface.
 1814 # sn:   Support for ISA and PC Card Ethernet devices using the
 1815 #       SMC91C90/92/94/95 chips.
 1816 # ste:  Sundance Technologies ST201 PCI fast ethernet controller, includes
 1817 #       the D-Link DFE-550TX.
 1818 # stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
 1819 #       TC9021 family of controllers, including the Sundance ST2021/ST2023,
 1820 #       the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
 1821 # ti:   Support for PCI gigabit ethernet NICs based on the Alteon Networks
 1822 #       Tigon 1 and Tigon 2 chipsets.  This includes the Alteon AceNIC, the
 1823 #       3Com 3c985, the Netgear GA620 and various others.  Note that you will
 1824 #       probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
 1825 # tl:   Support for the Texas Instruments TNETE100 series 'ThunderLAN'
 1826 #       cards and integrated ethernet controllers.  This includes several
 1827 #       Compaq Netelligent 10/100 cards and the built-in ethernet controllers
 1828 #       in several Compaq Prosignia, Proliant and Deskpro systems.  It also
 1829 #       supports several Olicom 10Mbps and 10/100 boards.
 1830 # tx:   SMC 9432 TX, BTX and FTX cards. (SMC EtherPower II series)
 1831 # txp:  Support for 3Com 3cR990 cards with the "Typhoon" chipset
 1832 # vr:   Support for various fast ethernet adapters based on the VIA
 1833 #       Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
 1834 #       including the D-Link DFE530TX (see 'rl' for DFE530TX+), the Hawking
 1835 #       Technologies PN102TX, and the AOpen/Acer ALN-320.
 1836 # vx:   3Com 3C590 and 3C595
 1837 # wb:   Support for fast ethernet adapters based on the Winbond W89C840F chip.
 1838 #       Note: this is not the same as the Winbond W89C940F, which is a
 1839 #       NE2000 clone.
 1840 # wi:   Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
 1841 #       the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
 1842 #       bridge with a PCMCIA adapter plugged into it.
 1843 # xe:   Xircom/Intel EtherExpress Pro100/16 PC Card ethernet controller,
 1844 #       Accton Fast EtherCard-16, Compaq Netelligent 10/100 PC Card,
 1845 #       Toshiba 10/100 Ethernet PC Card, Xircom 16-bit Ethernet + Modem 56
 1846 # xl:   Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
 1847 #       Etherlink XL cards and integrated controllers.  This includes the
 1848 #       integrated 3c905B-TX chips in certain Dell Optiplex and Dell
 1849 #       Precision desktop machines and the integrated 3c905-TX chips
 1850 #       in Dell Latitude laptop docking stations.
 1851 #       Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
 1852 
 1853 # Order for ISA/EISA devices is important here
 1854 
 1855 device          cm
 1856 hint.cm.0.at="isa"
 1857 hint.cm.0.port="0x2e0"
 1858 hint.cm.0.irq="9"
 1859 hint.cm.0.maddr="0xdc000"
 1860 device          ep
 1861 device          ex
 1862 device          fe
 1863 hint.fe.0.at="isa"
 1864 hint.fe.0.port="0x300"
 1865 device          fea
 1866 device          sn
 1867 hint.sn.0.at="isa"
 1868 hint.sn.0.port="0x300"
 1869 hint.sn.0.irq="10"
 1870 device          an
 1871 device          awi
 1872 device          cnw
 1873 device          wi
 1874 device          xe
 1875 
 1876 # PCI Ethernet NICs that use the common MII bus controller code.
 1877 device          bce             # Broadcom BCM5706/BCM5708 Gigabit Ethernet
 1878 device          bfe             # Broadcom BCM440x 10/100 Ethernet
 1879 device          bge             # Broadcom BCM570xx Gigabit Ethernet
 1880 device          cxgb            # Chelsio T3 10 Gigabit Ethernet
 1881 device          dc              # DEC/Intel 21143 and various workalikes
 1882 device          fxp             # Intel EtherExpress PRO/100B (82557, 82558)
 1883 hint.fxp.0.prefer_iomap="0"
 1884 device          gem             # Apple GMAC/Sun ERI/Sun GEM
 1885 device          hme             # Sun HME (Happy Meal Ethernet)
 1886 device          lge             # Level 1 LXT1001 gigabit Ethernet
 1887 device          my              # Myson Fast Ethernet (MTD80X, MTD89X)
 1888 device          nge             # NatSemi DP83820 gigabit Ethernet
 1889 device          rl              # RealTek 8129/8139
 1890 device          pcn             # AMD Am79C97x PCI 10/100 NICs
 1891 device          sf              # Adaptec AIC-6915 (``Starfire'')
 1892 device          sbsh            # Granch SBNI16 SHDSL modem
 1893 device          sis             # Silicon Integrated Systems SiS 900/SiS 7016
 1894 device          sk              # SysKonnect SK-984x & SK-982x gigabit Ethernet
 1895 device          ste             # Sundance ST201 (D-Link DFE-550TX)
 1896 device          ti              # Alteon Networks Tigon I/II gigabit Ethernet
 1897 device          tl              # Texas Instruments ThunderLAN
 1898 device          tx              # SMC EtherPower II (83c170 ``EPIC'')
 1899 device          vr              # VIA Rhine, Rhine II
 1900 device          wb              # Winbond W89C840F
 1901 device          xl              # 3Com 3c90x (``Boomerang'', ``Cyclone'')
 1902 
 1903 # PCI Ethernet NICs.
 1904 device          de              # DEC/Intel DC21x4x (``Tulip'')
 1905 device          le              # AMD Am7900 LANCE and Am79C9xx PCnet
 1906 device          mxge            # Myricom Myri-10G 10GbE NIC
 1907 device          nxge            # Neterion Xframe 10GbE Server/Storage Adapter
 1908 device          txp             # 3Com 3cR990 (``Typhoon'')
 1909 device          vx              # 3Com 3c590, 3c595 (``Vortex'')
 1910 
 1911 # PCI FDDI NICs.
 1912 device          fpa
 1913 
 1914 # PCI WAN adapters.
 1915 device          lmc
 1916 
 1917 # Use "private" jumbo buffers allocated exclusively for the ti(4) driver.
 1918 # This option is incompatible with the TI_JUMBO_HDRSPLIT option below.
 1919 #options        TI_PRIVATE_JUMBOS
 1920 # Turn on the header splitting option for the ti(4) driver firmware.  This
 1921 # only works for Tigon II chips, and has no effect for Tigon I chips.
 1922 options         TI_JUMBO_HDRSPLIT
 1923 
 1924 # These two options allow manipulating the mbuf cluster size and mbuf size,
 1925 # respectively.  Be very careful with NIC driver modules when changing
 1926 # these from their default values, because that can potentially cause a
 1927 # mismatch between the mbuf size assumed by the kernel and the mbuf size
 1928 # assumed by a module.  The only driver that currently has the ability to
 1929 # detect a mismatch is ti(4).
 1930 options         MCLSHIFT=12     # mbuf cluster shift in bits, 12 == 4KB
 1931 options         MSIZE=512       # mbuf size in bytes
 1932 
 1933 #
 1934 # ATM related options (Cranor version)
 1935 # (note: this driver cannot be used with the HARP ATM stack)
 1936 #
 1937 # The `en' device provides support for Efficient Networks (ENI)
 1938 # ENI-155 PCI midway cards, and the Adaptec 155Mbps PCI ATM cards (ANA-59x0).
 1939 #
 1940 # The `hatm' device provides support for Fore/Marconi HE155 and HE622
 1941 # ATM PCI cards.
 1942 #
 1943 # The `fatm' device provides support for Fore PCA200E ATM PCI cards.
 1944 #
 1945 # The `patm' device provides support for IDT77252 based cards like
 1946 # ProSum's ProATM-155 and ProATM-25 and IDT's evaluation boards.
 1947 #
 1948 # atm device provides generic atm functions and is required for
 1949 # atm devices.
 1950 # NATM enables the netnatm protocol family that can be used to
 1951 # bypass TCP/IP.
 1952 #
 1953 # utopia provides the access to the ATM PHY chips and is required for en,
 1954 # hatm and fatm.
 1955 #
 1956 # the current driver supports only PVC operations (no atm-arp, no multicast).
 1957 # for more details, please read the original documents at
 1958 # http://www.ccrc.wustl.edu/pub/chuck/tech/bsdatm/bsdatm.html
 1959 #
 1960 device          atm
 1961 device          en
 1962 device          fatm                    #Fore PCA200E
 1963 device          hatm                    #Fore/Marconi HE155/622
 1964 device          patm                    #IDT77252 cards (ProATM and IDT)
 1965 device          utopia                  #ATM PHY driver
 1966 options         NATM                    #native ATM
 1967 
 1968 options         LIBMBPOOL               #needed by patm, iatm
 1969 
 1970 #
 1971 # Sound drivers
 1972 #
 1973 # sound: The generic sound driver.
 1974 #
 1975 
 1976 device          sound
 1977 
 1978 #
 1979 # snd_*: Device-specific drivers.
 1980 #
 1981 # The flags of the device tells the device a bit more info about the
 1982 # device that normally is obtained through the PnP interface.
 1983 #       bit  2..0   secondary DMA channel;
 1984 #       bit  4      set if the board uses two dma channels;
 1985 #       bit 15..8   board type, overrides autodetection; leave it
 1986 #                   zero if don't know what to put in (and you don't,
 1987 #                   since this is unsupported at the moment...).
 1988 #
 1989 # snd_ad1816:           Analog Devices AD1816 ISA PnP/non-PnP.
 1990 # snd_als4000:          Avance Logic ALS4000 PCI.
 1991 # snd_atiixp:           ATI IXP 200/300/400 PCI.
 1992 # snd_au88x0            Aureal Vortex 1/2/Advantage PCI. This driver
 1993 #                       lacks support for playback and recording.
 1994 # snd_audiocs:          Crystal Semiconductor CS4231 SBus/EBus. Only
 1995 #                       for sparc64.
 1996 # snd_cmi:              CMedia CMI8338/CMI8738 PCI.
 1997 # snd_cs4281:           Crystal Semiconductor CS4281 PCI.
 1998 # snd_csa:              Crystal Semiconductor CS461x/428x PCI. (except
 1999 #                       4281)
 2000 # snd_ds1:              Yamaha DS-1 PCI.
 2001 # snd_emu10k1:          Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
 2002 # snd_emu10kx:          Creative SoundBlaster Live! and Audigy
 2003 # snd_envy24:           VIA Envy24 and compatible, needs snd_spicds.
 2004 # snd_envy24ht:         VIA Envy24HT and compatible, needs snd_spicds.
 2005 # snd_es137x:           Ensoniq AudioPCI ES137x PCI.
 2006 # snd_ess:              Ensoniq ESS ISA PnP/non-PnP, to be used in
 2007 #                       conjunction with snd_sbc.
 2008 # snd_fm801:            Forte Media FM801 PCI.
 2009 # snd_gusc:             Gravis UltraSound ISA PnP/non-PnP.
 2010 # snd_hda:              Intel High Definition Audio (Controller) and
 2011 #                       compatible.
 2012 # snd_ich:              Intel ICH PCI and some more audio controllers
 2013 #                       embedded in a chipset, for example nVidia
 2014 #                       nForce controllers.
 2015 # snd_maestro:          ESS Technology Maestro-1/2x PCI.
 2016 # snd_maestro3:         ESS Technology Maestro-3/Allegro PCI.
 2017 # snd_mss:              Microsoft Sound System ISA PnP/non-PnP.
 2018 # snd_neomagic:         Neomagic 256 AV/ZX PCI.
 2019 # snd_sb16:             Creative SoundBlaster16, to be used in
 2020 #                       conjunction with snd_sbc.
 2021 # snd_sb8:              Creative SoundBlaster (pre-16), to be used in
 2022 #                       conjunction with snd_sbc.
 2023 # snd_sbc:              Creative SoundBlaster ISA PnP/non-PnP.
 2024 #                       Supports ESS and Avance ISA chips as well.
 2025 # snd_spicds:           SPI codec driver, needed by Envy24/Envy24HT drivers.
 2026 # snd_solo:             ESS Solo-1x PCI.
 2027 # snd_t4dwave:          Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
 2028 #                       M5451 PCI.
 2029 # snd_via8233:          VIA VT8233x PCI.
 2030 # snd_via82c686:        VIA VT82C686A PCI.
 2031 # snd_vibes:            S3 Sonicvibes PCI.
 2032 # snd_uaudio:           USB audio.
 2033 
 2034 device          snd_ad1816
 2035 device          snd_als4000
 2036 device          snd_atiixp
 2037 #device         snd_au88x0
 2038 #device         snd_audiocs
 2039 device          snd_cmi
 2040 device          snd_cs4281
 2041 device          snd_csa
 2042 device          snd_ds1
 2043 device          snd_emu10k1
 2044 device          snd_emu10kx
 2045 device          snd_envy24
 2046 device          snd_envy24ht
 2047 device          snd_es137x
 2048 device          snd_ess
 2049 device          snd_fm801
 2050 device          snd_gusc
 2051 device          snd_hda
 2052 device          snd_ich
 2053 device          snd_maestro
 2054 device          snd_maestro3
 2055 device          snd_mss
 2056 device          snd_neomagic
 2057 device          snd_sb16
 2058 device          snd_sb8
 2059 device          snd_sbc
 2060 device          snd_solo
 2061 device          snd_spicds
 2062 device          snd_t4dwave
 2063 device          snd_via8233
 2064 device          snd_via82c686
 2065 device          snd_vibes
 2066 device          snd_uaudio
 2067 
 2068 # For non-PnP sound cards:
 2069 hint.pcm.0.at="isa"
 2070 hint.pcm.0.irq="10"
 2071 hint.pcm.0.drq="1"
 2072 hint.pcm.0.flags="0x0"
 2073 hint.sbc.0.at="isa"
 2074 hint.sbc.0.port="0x220"
 2075 hint.sbc.0.irq="5"
 2076 hint.sbc.0.drq="1"
 2077 hint.sbc.0.flags="0x15"
 2078 hint.gusc.0.at="isa"
 2079 hint.gusc.0.port="0x220"
 2080 hint.gusc.0.irq="5"
 2081 hint.gusc.0.drq="1"
 2082 hint.gusc.0.flags="0x13"
 2083 
 2084 #
 2085 # IEEE-488 hardware:
 2086 # pcii:         PCIIA cards (uPD7210 based isa cards)
 2087 # tnt4882:      National Instruments PCI-GPIB card.
 2088 
 2089 device  pcii
 2090 hint.pcii.0.at="isa"
 2091 hint.pcii.0.port="0x2e1"
 2092 hint.pcii.0.irq="5"
 2093 hint.pcii.0.drq="1"
 2094 
 2095 device  tnt4882
 2096 
 2097 #
 2098 # Miscellaneous hardware:
 2099 #
 2100 # scd: Sony CD-ROM using proprietary (non-ATAPI) interface
 2101 # mcd: Mitsumi CD-ROM using proprietary (non-ATAPI) interface
 2102 # bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
 2103 # cy: Cyclades serial driver
 2104 # joy: joystick (including IO DATA PCJOY PC Card joystick)
 2105 # rc: RISCom/8 multiport card
 2106 # rp: Comtrol Rocketport(ISA/PCI) - single card
 2107 # si: Specialix SI/XIO 4-32 port terminal multiplexor
 2108 
 2109 # Notes on the Comtrol Rocketport driver:
 2110 #
 2111 # The exact values used for rp0 depend on how many boards you have
 2112 # in the system.  The manufacturer's sample configs are listed as:
 2113 #
 2114 #               device  rp      # core driver support
 2115 #
 2116 #   Comtrol Rocketport ISA single card
 2117 #               hint.rp.0.at="isa"
 2118 #               hint.rp.0.port="0x280"
 2119 #
 2120 #   If instead you have two ISA cards, one installed at 0x100 and the
 2121 #   second installed at 0x180, then you should add the following to
 2122 #   your kernel probe hints:
 2123 #               hint.rp.0.at="isa"
 2124 #               hint.rp.0.port="0x100"
 2125 #               hint.rp.1.at="isa"
 2126 #               hint.rp.1.port="0x180"
 2127 #
 2128 #   For 4 ISA cards, it might be something like this:
 2129 #               hint.rp.0.at="isa"
 2130 #               hint.rp.0.port="0x180"
 2131 #               hint.rp.1.at="isa"
 2132 #               hint.rp.1.port="0x100"
 2133 #               hint.rp.2.at="isa"
 2134 #               hint.rp.2.port="0x340"
 2135 #               hint.rp.3.at="isa"
 2136 #               hint.rp.3.port="0x240"
 2137 #
 2138 #   For PCI cards, you need no hints.
 2139 
 2140 # Mitsumi CD-ROM
 2141 device          mcd
 2142 hint.mcd.0.at="isa"
 2143 hint.mcd.0.port="0x300"
 2144 # for the Sony CDU31/33A CDROM
 2145 device          scd
 2146 hint.scd.0.at="isa"
 2147 hint.scd.0.port="0x230"
 2148 device          joy                     # PnP aware, hints for non-PnP only
 2149 hint.joy.0.at="isa"
 2150 hint.joy.0.port="0x201"
 2151 device          rc
 2152 hint.rc.0.at="isa"
 2153 hint.rc.0.port="0x220"
 2154 hint.rc.0.irq="12"
 2155 device          rp
 2156 hint.rp.0.at="isa"
 2157 hint.rp.0.port="0x280"
 2158 device          si
 2159 options         SI_DEBUG
 2160 hint.si.0.at="isa"
 2161 hint.si.0.maddr="0xd0000"
 2162 hint.si.0.irq="12"
 2163 
 2164 #
 2165 # The 'bktr' device is a PCI video capture device using the Brooktree
 2166 # bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
 2167 # TV card, e.g. Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
 2168 # Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
 2169 #
 2170 # options       OVERRIDE_CARD=xxx
 2171 # options       OVERRIDE_TUNER=xxx
 2172 # options       OVERRIDE_MSP=1
 2173 # options       OVERRIDE_DBX=1
 2174 # These options can be used to override the auto detection
 2175 # The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
 2176 # Using sysctl(8) run-time overrides on a per-card basis can be made
 2177 #
 2178 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
 2179 # or
 2180 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
 2181 # Specifies the default video capture mode.
 2182 # This is required for Dual Crystal (28&35Mhz) boards where PAL is used
 2183 # to prevent hangs during initialisation, e.g. VideoLogic Captivator PCI.
 2184 #
 2185 # options       BKTR_USE_PLL
 2186 # This is required for PAL or SECAM boards with a 28Mhz crystal and no 35Mhz
 2187 # crystal, e.g. some new Bt878 cards.
 2188 #
 2189 # options       BKTR_GPIO_ACCESS
 2190 # This enable IOCTLs which give user level access to the GPIO port.
 2191 #
 2192 # options       BKTR_NO_MSP_RESET
 2193 # Prevents the MSP34xx reset. Good if you initialise the MSP in another OS first
 2194 #
 2195 # options       BKTR_430_FX_MODE
 2196 # Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
 2197 #
 2198 # options       BKTR_SIS_VIA_MODE
 2199 # Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
 2200 # needed for some old SiS and VIA chipset motherboards.
 2201 # This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
 2202 # motherboards and motherboards with bad or incomplete PCI 2.1 support.
 2203 # As a rough guess, old = before 1998
 2204 #
 2205 # options       BKTR_NEW_MSP34XX_DRIVER
 2206 # Use new, more complete initialization scheme for the msp34* soundchip.
 2207 # Should fix stereo autodetection if the old driver does only output
 2208 # mono sound.
 2209 
 2210 #
 2211 # options       BKTR_USE_FREEBSD_SMBUS
 2212 # Compile with FreeBSD SMBus implementation
 2213 #
 2214 # Brooktree driver has been ported to the new I2C framework. Thus,
 2215 # you'll need to have the following 3 lines in the kernel config.
 2216 #     device smbus
 2217 #     device iicbus
 2218 #     device iicbb
 2219 #     device iicsmb
 2220 # The iic and smb devices are only needed if you want to control other
 2221 # I2C slaves connected to the external connector of some cards.
 2222 #
 2223 device          bktr
 2224 
 2225 #
 2226 # PC Card/PCMCIA and Cardbus
 2227 #
 2228 # cbb: pci/cardbus bridge implementing YENTA interface
 2229 # pccard: pccard slots
 2230 # cardbus: cardbus slots
 2231 device          cbb
 2232 device          pccard
 2233 device          cardbus
 2234 
 2235 #
 2236 # MMC/SD
 2237 #
 2238 # mmc: mmc bus
 2239 # mmcsd: mmc memory and sd cards.
 2240 #device         mmc
 2241 #device         mmcsd
 2242 
 2243 #
 2244 # SMB bus
 2245 #
 2246 # System Management Bus support is provided by the 'smbus' device.
 2247 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
 2248 # which is a child of the 'smbus' device.
 2249 #
 2250 # Supported devices:
 2251 # smb           standard I/O through /dev/smb*
 2252 #
 2253 # Supported SMB interfaces:
 2254 # iicsmb        I2C to SMB bridge with any iicbus interface
 2255 # bktr          brooktree848 I2C hardware interface
 2256 # intpm         Intel PIIX4 (82371AB, 82443MX) Power Management Unit
 2257 # alpm          Acer Aladdin-IV/V/Pro2 Power Management Unit
 2258 # ichsmb        Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
 2259 # viapm         VIA VT82C586B/596B/686A and VT8233 Power Management Unit
 2260 # amdpm         AMD 756 Power Management Unit
 2261 # amdsmb        AMD 8111 SMBus 2.0 Controller
 2262 # nfpm          NVIDIA nForce Power Management Unit
 2263 # nfsmb         NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
 2264 #
 2265 device          smbus           # Bus support, required for smb below.
 2266 
 2267 device          intpm
 2268 device          alpm
 2269 device          ichsmb
 2270 device          viapm
 2271 device          amdpm
 2272 device          amdsmb
 2273 device          nfpm
 2274 device          nfsmb
 2275 
 2276 device          smb
 2277 
 2278 #
 2279 # I2C Bus
 2280 #
 2281 # Philips i2c bus support is provided by the `iicbus' device.
 2282 #
 2283 # Supported devices:
 2284 # ic    i2c network interface
 2285 # iic   i2c standard io
 2286 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
 2287 #
 2288 # Supported interfaces:
 2289 # bktr  brooktree848 I2C software interface
 2290 #
 2291 # Other:
 2292 # iicbb generic I2C bit-banging code (needed by lpbb, bktr)
 2293 #
 2294 device          iicbus          # Bus support, required for ic/iic/iicsmb below.
 2295 device          iicbb
 2296 
 2297 device          ic
 2298 device          iic
 2299 device          iicsmb          # smb over i2c bridge
 2300 
 2301 # Parallel-Port Bus
 2302 #
 2303 # Parallel port bus support is provided by the `ppbus' device.
 2304 # Multiple devices may be attached to the parallel port, devices
 2305 # are automatically probed and attached when found.
 2306 #
 2307 # Supported devices:
 2308 # vpo   Iomega Zip Drive
 2309 #       Requires SCSI disk support ('scbus' and 'da'), best
 2310 #       performance is achieved with ports in EPP 1.9 mode.
 2311 # lpt   Parallel Printer
 2312 # plip  Parallel network interface
 2313 # ppi   General-purpose I/O ("Geek Port") + IEEE1284 I/O
 2314 # pps   Pulse per second Timing Interface
 2315 # lpbb  Philips official parallel port I2C bit-banging interface
 2316 #
 2317 # Supported interfaces:
 2318 # ppc   ISA-bus parallel port interfaces.
 2319 #
 2320 
 2321 options         PPC_PROBE_CHIPSET # Enable chipset specific detection
 2322                                   # (see flags in ppc(4))
 2323 options         DEBUG_1284      # IEEE1284 signaling protocol debug
 2324 options         PERIPH_1284     # Makes your computer act as an IEEE1284
 2325                                 # compliant peripheral
 2326 options         DONTPROBE_1284  # Avoid boot detection of PnP parallel devices
 2327 options         VP0_DEBUG       # ZIP/ZIP+ debug
 2328 options         LPT_DEBUG       # Printer driver debug
 2329 options         PPC_DEBUG       # Parallel chipset level debug
 2330 options         PLIP_DEBUG      # Parallel network IP interface debug
 2331 options         PCFCLOCK_VERBOSE         # Verbose pcfclock driver
 2332 options         PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)
 2333 
 2334 device          ppc
 2335 hint.ppc.0.at="isa"
 2336 hint.ppc.0.irq="7"
 2337 device          ppbus
 2338 device          vpo
 2339 device          lpt
 2340 device          plip
 2341 device          ppi
 2342 device          pps
 2343 device          lpbb
 2344 device          pcfclock
 2345 
 2346 # Kernel BOOTP support
 2347 
 2348 options         BOOTP           # Use BOOTP to obtain IP address/hostname
 2349                                 # Requires NFSCLIENT and NFS_ROOT
 2350 options         BOOTP_NFSROOT   # NFS mount root filesystem using BOOTP info
 2351 options         BOOTP_NFSV3     # Use NFS v3 to NFS mount root
 2352 options         BOOTP_COMPAT    # Workaround for broken bootp daemons.
 2353 options         BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
 2354 
 2355 #
 2356 # Add software watchdog routines.
 2357 #
 2358 options         SW_WATCHDOG
 2359 
 2360 #
 2361 # Disable swapping of stack pages.  This option removes all
 2362 # code which actually performs swapping, so it's not possible to turn
 2363 # it back on at run-time.
 2364 #
 2365 # This is sometimes usable for systems which don't have any swap space
 2366 # (see also sysctls "vm.defer_swapspace_pageouts" and
 2367 # "vm.disable_swapspace_pageouts")
 2368 #
 2369 #options        NO_SWAPPING
 2370 
 2371 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
 2372 # for sendfile(2) that are used to map file VM pages, and normally
 2373 # default to a quantity that is roughly 16*MAXUSERS+512. You would
 2374 # typically want about 4 of these for each simultaneous file send.
 2375 #
 2376 options         NSFBUFS=1024
 2377 
 2378 #
 2379 # Enable extra debugging code for locks.  This stores the filename and
 2380 # line of whatever acquired the lock in the lock itself, and change a
 2381 # number of function calls to pass around the relevant data.  This is
 2382 # not at all useful unless you are debugging lock code.  Also note
 2383 # that it is likely to break e.g. fstat(1) unless you recompile your
 2384 # userland with -DDEBUG_LOCKS as well.
 2385 #
 2386 options         DEBUG_LOCKS
 2387 
 2388 
 2389 #####################################################################
 2390 # USB support
 2391 # UHCI controller
 2392 device          uhci
 2393 # OHCI controller
 2394 device          ohci
 2395 # EHCI controller
 2396 device          ehci
 2397 # SL811 Controller
 2398 device          slhci
 2399 # General USB code (mandatory for USB)
 2400 device          usb
 2401 #
 2402 # USB Double Bulk Pipe devices
 2403 device          udbp
 2404 # USB Fm Radio
 2405 device          ufm
 2406 # Generic USB device driver
 2407 device          ugen
 2408 # Human Interface Device (anything with buttons and dials)
 2409 device          uhid
 2410 # USB keyboard
 2411 device          ukbd
 2412 # USB printer
 2413 device          ulpt
 2414 # USB Iomega Zip 100 Drive (Requires scbus and da)
 2415 device          umass
 2416 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
 2417 device          umct
 2418 # USB modem support
 2419 device          umodem
 2420 # USB mouse
 2421 device          ums
 2422 # Diamond Rio 500 MP3 player
 2423 device          urio
 2424 # USB scanners
 2425 device          uscanner
 2426 #
 2427 # USB serial support
 2428 device          ucom
 2429 # USB support for Technologies ARK3116 based serial adapters
 2430 device          uark
 2431 # USB support for Belkin F5U103 and compatible serial adapters
 2432 device          ubsa
 2433 # USB support for BWCT console serial adapters
 2434 device          ubser
 2435 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
 2436 device          uftdi
 2437 # USB support for some Windows CE based serial communication.
 2438 device          uipaq
 2439 # USB support for Prolific PL-2303 serial adapters
 2440 device          uplcom
 2441 # USB Visor and Palm devices
 2442 device          uvisor
 2443 # USB serial support for DDI pocket's PHS
 2444 device          uvscom
 2445 #
 2446 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
 2447 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
 2448 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
 2449 # eval board.
 2450 device          aue
 2451 
 2452 # ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
 2453 # LinkSys USB200M and various other adapters.
 2454 
 2455 device          axe
 2456 
 2457 #
 2458 # Devices which communicate using Ethernet over USB, particularly
 2459 # Communication Device Class (CDC) Ethernet specification. Supports
 2460 # Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
 2461 device          cdce
 2462 #
 2463 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
 2464 # and Netmate II, and the Belkin F5U111.
 2465 device          cue
 2466 #
 2467 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
 2468 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
 2469 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
 2470 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
 2471 # and 2104USB, and the Corega USB-T.
 2472 device          kue
 2473 #
 2474 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
 2475 # and the GREEN HOUSE GH-USB100B.
 2476 device          rue
 2477 #
 2478 # Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
 2479 device          udav
 2480 
 2481 
 2482 # debugging options for the USB subsystem
 2483 #
 2484 options         USB_DEBUG
 2485 
 2486 # options for ukbd:
 2487 options         UKBD_DFLT_KEYMAP        # specify the built-in keymap
 2488 makeoptions     UKBD_DFLT_KEYMAP=it.iso
 2489 
 2490 # options for uplcom:
 2491 options         UPLCOM_INTR_INTERVAL=100        # interrupt pipe interval
 2492                                                 # in milliseconds
 2493 
 2494 # options for uvscom:
 2495 options         UVSCOM_DEFAULT_OPKTSIZE=8       # default output packet size
 2496 options         UVSCOM_INTR_INTERVAL=100        # interrupt pipe interval
 2497                                                 # in milliseconds
 2498 
 2499 #####################################################################
 2500 # FireWire support
 2501 
 2502 device          firewire        # FireWire bus code
 2503 device          sbp             # SCSI over Firewire (Requires scbus and da)
 2504 device          sbp_targ        # SBP-2 Target mode  (Requires scbus and targ)
 2505 device          fwe             # Ethernet over FireWire (non-standard!)
 2506 device          fwip            # IP over FireWire (RFC2734 and RFC3146)
 2507 
 2508 #####################################################################
 2509 # dcons support (Dumb Console Device)
 2510 
 2511 device          dcons                   # dumb console driver
 2512 device          dcons_crom              # FireWire attachment
 2513 options         DCONS_BUF_SIZE=16384    # buffer size
 2514 options         DCONS_POLL_HZ=100       # polling rate
 2515 options         DCONS_FORCE_CONSOLE=0   # force to be the primary console
 2516 options         DCONS_FORCE_GDB=1       # force to be the gdb device
 2517 
 2518 #####################################################################
 2519 # crypto subsystem
 2520 #
 2521 # This is a port of the OpenBSD crypto framework.  Include this when
 2522 # configuring IPSEC and when you have a h/w crypto device to accelerate
 2523 # user applications that link to OpenSSL.
 2524 #
 2525 # Drivers are ports from OpenBSD with some simple enhancements that have
 2526 # been fed back to OpenBSD.
 2527 
 2528 device          crypto          # core crypto support
 2529 device          cryptodev       # /dev/crypto for access to h/w
 2530 
 2531 device          rndtest         # FIPS 140-2 entropy tester
 2532 
 2533 device          hifn            # Hifn 7951, 7781, etc.
 2534 options         HIFN_DEBUG      # enable debugging support: hw.hifn.debug
 2535 options         HIFN_RNDTEST    # enable rndtest support
 2536 
 2537 device          ubsec           # Broadcom 5501, 5601, 58xx
 2538 options         UBSEC_DEBUG     # enable debugging support: hw.ubsec.debug
 2539 options         UBSEC_RNDTEST   # enable rndtest support
 2540 
 2541 #####################################################################
 2542 
 2543 
 2544 #
 2545 # Embedded system options:
 2546 #
 2547 # An embedded system might want to run something other than init.
 2548 options         INIT_PATH=/sbin/init:/stand/sysinstall
 2549 
 2550 # Debug options
 2551 options         BUS_DEBUG       # enable newbus debugging
 2552 options         DEBUG_VFS_LOCKS # enable VFS lock debugging
 2553 options         SOCKBUF_DEBUG   # enable sockbuf last record/mb tail checking
 2554 
 2555 #
 2556 # Verbose SYSINIT
 2557 #
 2558 # Make the SYSINIT process performed by mi_startup() verbose.  This is very
 2559 # useful when porting to a new architecture.  If DDB is also enabled, this
 2560 # will print function names instead of addresses.
 2561 options         VERBOSE_SYSINIT
 2562 
 2563 #####################################################################
 2564 # SYSV IPC KERNEL PARAMETERS
 2565 #
 2566 # Maximum number of entries in a semaphore map.
 2567 options         SEMMAP=31
 2568 
 2569 # Maximum number of System V semaphores that can be used on the system at
 2570 # one time.
 2571 options         SEMMNI=11
 2572 
 2573 # Total number of semaphores system wide
 2574 options         SEMMNS=61
 2575 
 2576 # Total number of undo structures in system
 2577 options         SEMMNU=31
 2578 
 2579 # Maximum number of System V semaphores that can be used by a single process
 2580 # at one time.
 2581 options         SEMMSL=61
 2582 
 2583 # Maximum number of operations that can be outstanding on a single System V
 2584 # semaphore at one time.
 2585 options         SEMOPM=101
 2586 
 2587 # Maximum number of undo operations that can be outstanding on a single
 2588 # System V semaphore at one time.
 2589 options         SEMUME=11
 2590 
 2591 # Maximum number of shared memory pages system wide.
 2592 options         SHMALL=1025
 2593 
 2594 # Maximum size, in bytes, of a single System V shared memory region.
 2595 options         SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
 2596 options         SHMMAXPGS=1025
 2597 
 2598 # Minimum size, in bytes, of a single System V shared memory region.
 2599 options         SHMMIN=2
 2600 
 2601 # Maximum number of shared memory regions that can be used on the system
 2602 # at one time.
 2603 options         SHMMNI=33
 2604 
 2605 # Maximum number of System V shared memory regions that can be attached to
 2606 # a single process at one time.
 2607 options         SHMSEG=9
 2608 
 2609 # Set the amount of time (in seconds) the system will wait before
 2610 # rebooting automatically when a kernel panic occurs.  If set to (-1),
 2611 # the system will wait indefinitely until a key is pressed on the
 2612 # console.
 2613 options         PANIC_REBOOT_WAIT_TIME=16
 2614 
 2615 # Attempt to bypass the buffer cache and put data directly into the
 2616 # userland buffer for read operation when O_DIRECT flag is set on the
 2617 # file.  Both offset and length of the read operation must be
 2618 # multiples of the physical media sector size.
 2619 #
 2620 options         DIRECTIO
 2621 
 2622 # Specify a lower limit for the number of swap I/O buffers.  They are
 2623 # (among other things) used when bypassing the buffer cache due to
 2624 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
 2625 #
 2626 options         NSWBUF_MIN=120
 2627 
 2628 #####################################################################
 2629 
 2630 # More undocumented options for linting.
 2631 # Note that documenting these are not considered an affront.
 2632 
 2633 options         CAM_DEBUG_DELAY
 2634 
 2635 # VFS cluster debugging.
 2636 options         CLUSTERDEBUG
 2637 
 2638 options         DEBUG
 2639 
 2640 # Kernel filelock debugging.
 2641 options         LOCKF_DEBUG
 2642 
 2643 # System V compatible message queues
 2644 # Please note that the values provided here are used to test kernel
 2645 # building.  The defaults in the sources provide almost the same numbers.
 2646 # MSGSSZ must be a power of 2 between 8 and 1024.
 2647 options         MSGMNB=2049     # Max number of chars in queue
 2648 options         MSGMNI=41       # Max number of message queue identifiers
 2649 options         MSGSEG=2049     # Max number of message segments
 2650 options         MSGSSZ=16       # Size of a message segment
 2651 options         MSGTQL=41       # Max number of messages in system
 2652 
 2653 options         NBUF=512        # Number of buffer headers
 2654 
 2655 options         SCSI_NCR_DEBUG
 2656 options         SCSI_NCR_MAX_SYNC=10000
 2657 options         SCSI_NCR_MAX_WIDE=1
 2658 options         SCSI_NCR_MYADDR=7
 2659 
 2660 options         SC_DEBUG_LEVEL=5        # Syscons debug level
 2661 options         SC_RENDER_DEBUG # syscons rendering debugging
 2662 
 2663 options         SHOW_BUSYBUFS   # List buffers that prevent root unmount
 2664 options         SLIP_IFF_OPTS
 2665 options         VFS_BIO_DEBUG   # VFS buffer I/O debugging
 2666 
 2667 options         KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
 2668 
 2669 # Adaptec Array Controller driver options
 2670 options         AAC_DEBUG       # Debugging levels:
 2671                                 # 0 - quiet, only emit warnings
 2672                                 # 1 - noisy, emit major function
 2673                                 #     points and things done
 2674                                 # 2 - extremely noisy, emit trace
 2675                                 #     items in loops, etc.
 2676 
 2677 # Yet more undocumented options for linting.
 2678 # BKTR_ALLOC_PAGES has no effect except to cause warnings, and
 2679 # BROOKTREE_ALLOC_PAGES hasn't actually been superseded by it, since the
 2680 # driver still mostly spells this option BROOKTREE_ALLOC_PAGES.
 2681 ##options       BKTR_ALLOC_PAGES=(217*4+1)
 2682 options         BROOKTREE_ALLOC_PAGES=(217*4+1)
 2683 options         MAXFILES=999

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