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freebsd/sys/conf/options
Dag-Erling Smørgrav 1b968362aa Add support for stealth forwarding (forwarding packets without touching
their ttl). This can be used - in combination with the proper ipfw
incantations - to make a firewall or router invisible to traceroute
and other exploration tools.

This behaviour is controlled by a sysctl variable (net.inet.ip.stealth)
and hidden behind a kernel option (IPSTEALTH).

Reviewed by:	eivind, bde
1999-02-22 18:19:57 +00:00

347 lines
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# $Id: options,v 1.127 1999/02/14 11:59:58 nsouch Exp $
#
# On the handling of kernel options
#
# All kernel options should be listed in LINT, with suitable
# descriptions. Negative options (options that make some code not
# compile) should be commented out; LINT should compile as much code
# as possible. Try to structure option-using code so that a single
# option only switch code on, or only switch code off, to make it
# possible to have a full compile-test. If necessary, you can include
# "opt_lint.h" and check for COMPILING_LINT to get maximum code
# coverage.
#
# All new options shall also be listed in either "conf/options" or
# "<machine>/conf/options.<machine>". Options that affect a single
# source-file <xxx>.[c|s] should be directed into "opt_<xxx>.h", while
# options that affect multiple files should either go in
# "opt_global.h" if this is a kernel-wide option (used just about
# everywhere), or in "opt_<option-name-in-lower-case>.h" if it affect
# only some files. Note that the effect of listing only an option
# without a header-file-name in conf/options (and cousins) is that the
# last convention is followed.
#
# This handling scheme is not yet fully implemented.
#
#
# Format of this file:
# Option name filename
#
# If filename is missing, the default is
# opt_<name-of-option-in-lower-case>.h
# Adaptec aic7xxx SCSI controller options
AHC_ALLOW_MEMIO opt_aic7xxx.h # Allow PCI devices to use memory
# mapped I/O
AHC_TMODE_ENABLE opt_aic7xxx.h # Bitmap of units to enable
# targetmode operations.
ADW_ALLOW_MEMIO opt_adw.h # Allow PCI devices to use memory
# mapped I/O
# Miscellaneous options.
COMPAT_43 opt_compat.h
COMPAT_SUNOS opt_compat.h
COMPILING_LINT opt_lint.h
CY_PCI_FASTINTR
DDB
DDB_UNATTENDED opt_ddb.h
GDB_REMOTE_CHAT opt_ddb.h
DEVFS
FAILSAFE
HW_WDOG
KTRACE
MD5
MFS_ROOT opt_mfs.h
MFS_ROOT_SIZE opt_mfs.h
NTIMECOUNTER opt_ntp.h
EXPORTMFS opt_mfs.h
NSWAPDEV opt_swap.h
PPS_SYNC opt_ntp.h
QUOTA
SPX_HACK
SUIDDIR opt_suiddir.h
SYSVMSG opt_sysvipc.h
SYSVSEM opt_sysvipc.h
SYSVSHM opt_sysvipc.h
UCONSOLE
ICMP_BANDLIM
# POSIX kernel options
P1003_1B opt_posix.h
_KPOSIX_PRIORITY_SCHEDULING opt_posix.h
_KPOSIX_VERSION opt_posix.h
# Do we want the config file compiled into the kernel?
INCLUDE_CONFIG_FILE opt_config.h
# Options for static file systems. These should only be used at config
# time, since the corresponding lkms cannot work if there are any static
# dependencies. Unusability is enforced by hiding the defines for the
# options in a never-included header.
EXT2FS opt_dontuse.h
FDESC opt_dontuse.h
KERNFS opt_dontuse.h
MFS opt_dontuse.h
MSDOSFS opt_dontuse.h
NULLFS opt_dontuse.h
PORTAL opt_dontuse.h
PROCFS opt_dontuse.h
UMAPFS opt_dontuse.h
# These static filesystems has one slightly bogus static dependency in
# sys/i386/i386/autoconf.c. If any of these filesystems are
# statically compiled into the kernel, code for mounting them as root
# filesystems will be enabled - but look below. Boot-code is purposely
# unavailable for the LKM-based versions.
CODA
CD9660
FFS
NFS
# If you are following the conditions in the copyright,
# you can enable soft-updates which will speed up a lot of thigs
# and make the system safer from crashes at the same time.
# otherwise a STUB module will be compiled in.
SOFTUPDATES opt_ffs.h
# The above static dependencies are planned removed, with a
# <filesystem>_ROOT option to control if it usable as root. This list
# allows these options to be present in config files already (though
# they won't make any difference yet).
CD9660_ROOT opt_cd9660.h
FFS_ROOT opt_ffs.h
NFS_ROOT opt_nfsroot.h
# Multi-session CD-Rs might require a huge amount of time in order to
# "settle". If we are about mounting them as the root f/s, we gotta
# wait a little.
CD9660_ROOTDELAY opt_cd9660.h
# The union static file system has bogus static dependencies, so it isn't
# hidden yet.
UNION
# Options used only in param.c.
HZ opt_param.h
MAXUSERS opt_param.h
MSGMNB opt_param.h
MSGMNI opt_param.h
MSGSEG opt_param.h
MSGSSZ opt_param.h
MSGTQL opt_param.h
NBUF opt_param.h
NMBCLUSTERS opt_param.h
NSFBUFS opt_param.h
SEMMAP opt_param.h
SEMMNI opt_param.h
SEMMNS opt_param.h
SEMMNU opt_param.h
SEMMSL opt_param.h
SEMOPM opt_param.h
SEMUME opt_param.h
SHMALL opt_param.h
SHMMAX opt_param.h
SHMMAXPGS opt_param.h
SHMMIN opt_param.h
SHMMNI opt_param.h
SHMSEG opt_param.h
# Generic SCSI options.
CAM_MAX_HIGHPOWER opt_cam.h
CAMDEBUG opt_cam.h
CAM_DEBUG_BUS opt_cam.h
CAM_DEBUG_TARGET opt_cam.h
CAM_DEBUG_LUN opt_cam.h
CAM_DEBUG_FLAGS opt_cam.h
SCSI_DELAY opt_scsi.h
SCSI_REPORT_GEOMETRY opt_scsi.h
SCSI_NO_SENSE_STRINGS opt_scsi.h
SCSI_NO_OP_STRINGS opt_scsi.h
# Options used only in cam/scsi/scsi_cd.c
CHANGER_MIN_BUSY_SECONDS opt_cd.h
CHANGER_MAX_BUSY_SECONDS opt_cd.h
# Options used only in cam/scsi/sa.c.
SA_SPACE_TIMEOUT opt_sa.h
SA_REWIND_TIMEOUT opt_sa.h
SA_ERASE_TIMEOUT opt_sa.h
# Options used only in pci/ncr.c
SCSI_NCR_DEBUG opt_ncr.h
SCSI_NCR_DFLT_TAGS opt_ncr.h
SCSI_NCR_MAX_SYNC opt_ncr.h
SCSI_NCR_MAX_WIDE opt_ncr.h
SCSI_NCR_MYADDR opt_ncr.h
# Options used only in pci/isp_pci.c
SCSI_ISP_NO_FWLOAD_MASK opt_isp.h
SCSI_ISP_NO_NVRAM_MASK opt_isp.h
SCSI_ISP_PREFER_MEM_MAP opt_isp.h
# Resource limits.
DFLDSIZ opt_rlimit.h
MAXDSIZ opt_rlimit.h
# Net stuff.
BOOTP opt_bootp.h
BOOTP_COMPAT opt_bootp.h
BOOTP_NFSROOT opt_bootp.h
BOOTP_NFSV3 opt_bootp.h
BOOTP_WIRED_TO opt_bootp.h
BRIDGE opt_bdg.h
MROUTING opt_mrouting.h
INET opt_inet.h
IPDIVERT
DUMMYNET opt_ipdn.h
IPFIREWALL opt_ipfw.h
IPFIREWALL_VERBOSE opt_ipfw.h
IPFIREWALL_VERBOSE_LIMIT opt_ipfw.h
IPFIREWALL_DEFAULT_TO_ACCEPT opt_ipfw.h
IPFIREWALL_FORWARD opt_ipfw.h
IPSTEALTH
IPX opt_ipx.h
IPXIP opt_ipx.h
IPTUNNEL opt_ipx.h
NETATALK opt_atalk.h
PPP_BSDCOMP opt_ppp.h
PPP_DEFLATE opt_ppp.h
PPP_FILTER opt_ppp.h
TCP_COMPAT_42 opt_compat.h
TCPDEBUG
IPFILTER opt_ipfilter.h
IPFILTER_LOG opt_ipfilter.h
IPFILTER_LKM opt_ipfilter.h
SLIP_IFF_OPTS opt_slip.h
# ATM (HARP version)
ATM_CORE opt_atm.h
ATM_IP opt_atm.h
ATM_SIGPVC opt_atm.h
ATM_SPANS opt_atm.h
ATM_UNI opt_atm.h
# XXX Conflict: # of devices vs network protocol (Native ATM).
# This makes "atm.h" unusable.
NATM opt_natm.h
DPT_ALLOW_MEMIO opt_dpt.h # Allow PCI devices to use memory
# mapped I/O
# DPT driver debug flags
DPT_VERIFY_HINTR opt_dpt.h
DPT_USE_SINTR opt_dpt.h
DPT_RESTRICTED_FREELIST opt_dpt.h
DPT_MEASURE_PERFORMANCE opt_dpt.h
DPT_FREELIST_IS_STACK opt_dpt.h
DPT_HANDLE_TIMEOUTS opt_dpt.h
DPT_TIMEOUT_FACTOR opt_dpt.h
DPT_INTR_DELAY opt_dpt.h
DPT_LOST_IRQ opt_dpt.h
DPT_SHUTDOWN_SLEEP opt_dpt.h
DPT_RESET_HBA opt_dpt.h
# Misc debug flags. Most of these should probably be replaced with
# 'DEBUG', and then let people recompile just the interesting modules
# with 'make CC="cc -DDEBUG"'.
CLUSTERDEBUG opt_debug_cluster.h
DEBUG_1284 opt_ppb_1284.h
VP0_DEBUG opt_vpo.h
LPT_DEBUG opt_lpt.h
PLIP_DEBUG opt_plip.h
LOCKF_DEBUG opt_debug_lockf.h
LOUTB opt_debug_outb.h
NPX_DEBUG opt_debug_npx.h
NETATALKDEBUG opt_atalk.h
NULLFS_DIAGNOSTIC opt_debug_nullfs.h
SI_DEBUG opt_debug_si.h
# ppbus related options
PERIPH_1284 opt_ppb_1284.h
DONTPROBE_1284 opt_ppb_1284.h
# smbus related options
ENABLE_ALART opt_intpm.h
# These cause changes all over the kernel
DEBUG opt_global.h
DEBUG_LOCKS opt_global.h
DEBUG_VFS_LOCKS opt_global.h
DIAGNOSTIC opt_global.h
ENABLE_VFS_IOOPT opt_global.h
INVARIANT_SUPPORT opt_global.h
INVARIANTS opt_global.h
SIMPLELOCK_DEBUG opt_global.h
VFS_BIO_DEBUG opt_global.h
# These are VM related options
VM_KMEM_SIZE opt_vm.h
VM_KMEM_SIZE_SCALE opt_vm.h
VM_KMEM_SIZE_MAX opt_vm.h
NO_SWAPPING opt_vm.h
PQ_NOOPT opt_vmpage.h
PQ_NORMALCACHE opt_vmpage.h
PQ_MEDIUMCACHE opt_vmpage.h
PQ_LARGECACHE opt_vmpage.h
PQ_HUGECACHE opt_vmpage.h
# Standard SMP options
SMP opt_global.h
NCPU opt_smp.h
NBUS opt_smp.h
# sys/netkey
KEY
KEY_DEBUG opt_key.h
# Size of the kernel message buffer
MSGBUF_SIZE opt_msgbuf.h
# PCI related options
PCI_QUIET opt_pci.h
# NFS options
NFS_MINATTRTIMO opt_nfs.h
NFS_MAXATTRTIMO opt_nfs.h
NFS_MINDIRATTRTIMO opt_nfs.h
NFS_MAXDIRATTRTIMO opt_nfs.h
NFS_GATHERDELAY opt_nfs.h
NFS_UIDHASHSIZ opt_nfs.h
NFS_WDELAYHASHSIZ opt_nfs.h
NFS_MUIDHASHSIZ opt_nfs.h
NFS_NOSERVER opt_nfs.h
NFS_DEBUG opt_nfs.h
# give bktr an opt_bktr.h file
OVERRIDE_CARD opt_bktr.h
OVERRIDE_TUNER opt_bktr.h
OVERRIDE_DBX opt_bktr.h
OVERRIDE_MSP opt_bktr.h
BROOKTREE_SYSTEM_DEFAULT opt_bktr.h
BKTR_USE_PLL opt_bktr.h
# meteor opt_meteor.h
METEOR_ALLOC_PAGES opt_meteor.h
METEOR_TEST_VIDEO opt_meteor.h
METEOR_SYSTEM_DEFAULT opt_meteor.h
METEOR_DEALLOC_PAGES opt_meteor.h
METEOR_DEALLOC_ABOVE opt_meteor.h
# Include tweaks for running under the SimOS machine simulator.
SIMOS opt_simos.h
# options for bus/device framework
BUS_DEBUG opt_bus.h
# options for USB support
USB_DEBUG opt_usb.h
USBVERBOSE opt_usb.h
# Vinum options
VINUMDEBUG opt_vinum.h
# Include LKM compatability module
LKM