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freebsd-skq/sys/conf/options
rwatson 6e29aea1db Implement a CPU-affine TCP and UDP connection lookup data structure, 
struct inpcbgroup.  pcbgroups, or "connection groups", supplement the
existing inpcbinfo connection hash table, which when pcbgroups are
enabled, might now be thought of more usefully as a per-protocol
4-tuple reservation table.

Connections are assigned to connection groups base on a hash of their
4-tuple; wildcard sockets require special handling, and are members
of all connection groups.  During a connection lookup, a
per-connection group lock is employed rather than the global pcbinfo
lock.  By aligning connection groups with input path processing,
connection groups take on an effective CPU affinity, especially when
aligned with RSS work placement (see a forthcoming commit for
details).  This eliminates cache line migration associated with
global, protocol-layer data structures in steady state TCP and UDP
processing (with the exception of protocol-layer statistics; further
commit to follow).

Elements of this approach were inspired by Willman, Rixner, and Cox's
2006 USENIX paper, "An Evaluation of Network Stack Parallelization
Strategies in Modern Operating Systems".  However, there are also
significant differences: we maintain the inpcb lock, rather than using
the connection group lock for per-connection state.

Likewise, the focus of this implementation is alignment with NIC
packet distribution strategies such as RSS, rather than pure software
strategies.  Despite that focus, software distribution is supported
through the parallel netisr implementation, and works well in
configurations where the number of hardware threads is greater than
the number of NIC input queues, such as in the RMI XLR threaded MIPS
architecture.

Another important difference is the continued maintenance of existing
hash tables as "reservation tables" -- these are useful both to
distinguish the resource allocation aspect of protocol name management
and the more common-case lookup aspect.  In configurations where
connection tables are aligned with hardware hashes, it is desirable to
use the traditional lookup tables for loopback or encapsulated traffic
rather than take the expense of hardware hashes that are hard to
implement efficiently in software (such as RSS Toeplitz).

Connection group support is enabled by compiling "options PCBGROUP"
into your kernel configuration; for the time being, this is an
experimental feature, and hence is not enabled by default.

Subject to the limited MFCability of change dependencies in inpcb,
and its change to the inpcbinfo init function signature, this change
in principle could be merged to FreeBSD 8.x.

Reviewed by:    bz
Sponsored by:   Juniper Networks, Inc.
2011-06-06 12:55:02 +00:00

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# $FreeBSD$
#
# On the handling of kernel options
#
# All kernel options should be listed in NOTES, with suitable
# descriptions. Negative options (options that make some code not
# compile) should be commented out; LINT (generated from NOTES) 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 check for COMPILING_LINT to get maximum code
# coverage.
#
# All new options shall also be listed in either "conf/options" or
# "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 affects 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
AAC_DEBUG opt_aac.h
AHC_ALLOW_MEMIO opt_aic7xxx.h
AHC_TMODE_ENABLE opt_aic7xxx.h
AHC_DUMP_EEPROM opt_aic7xxx.h
AHC_DEBUG opt_aic7xxx.h
AHC_DEBUG_OPTS opt_aic7xxx.h
AHC_REG_PRETTY_PRINT opt_aic7xxx.h
AHD_DEBUG opt_aic79xx.h
AHD_DEBUG_OPTS opt_aic79xx.h
AHD_TMODE_ENABLE opt_aic79xx.h
AHD_REG_PRETTY_PRINT opt_aic79xx.h
ADW_ALLOW_MEMIO opt_adw.h
TWA_DEBUG opt_twa.h
TWA_FLASH_FIRMWARE opt_twa.h
# Debugging options.
DDB
DDB_BUFR_SIZE opt_ddb.h
DDB_CAPTURE_DEFAULTBUFSIZE opt_ddb.h
DDB_CAPTURE_MAXBUFSIZE opt_ddb.h
DDB_CTF opt_ddb.h
DDB_NUMSYM opt_ddb.h
GDB
KDB opt_global.h
KDB_TRACE opt_kdb.h
KDB_UNATTENDED opt_kdb.h
SYSCTL_DEBUG opt_sysctl.h
# Miscellaneous options.
ADAPTIVE_LOCKMGRS
ALQ
AUDIT opt_global.h
CAPABILITIES opt_capabilities.h
CODA_COMPAT_5 opt_coda.h
COMPAT_43 opt_compat.h
COMPAT_43TTY opt_compat.h
COMPAT_FREEBSD4 opt_compat.h
COMPAT_FREEBSD5 opt_compat.h
COMPAT_FREEBSD6 opt_compat.h
COMPAT_FREEBSD7 opt_compat.h
COMPILING_LINT opt_global.h
COMPRESS_USER_CORES opt_core.h
CY_PCI_FASTINTR
DEADLKRES opt_watchdog.h
DIRECTIO
FULL_PREEMPTION opt_sched.h
IPI_PREEMPTION opt_sched.h
GEOM_AES opt_geom.h
GEOM_BDE opt_geom.h
GEOM_BSD opt_geom.h
GEOM_CACHE opt_geom.h
GEOM_CONCAT opt_geom.h
GEOM_ELI opt_geom.h
GEOM_FOX opt_geom.h
GEOM_GATE opt_geom.h
GEOM_JOURNAL opt_geom.h
GEOM_LABEL opt_geom.h
GEOM_LINUX_LVM opt_geom.h
GEOM_MBR opt_geom.h
GEOM_MIRROR opt_geom.h
GEOM_MULTIPATH opt_geom.h
GEOM_NOP opt_geom.h
GEOM_PART_APM opt_geom.h
GEOM_PART_BSD opt_geom.h
GEOM_PART_EBR opt_geom.h
GEOM_PART_EBR_COMPAT opt_geom.h
GEOM_PART_GPT opt_geom.h
GEOM_PART_MBR opt_geom.h
GEOM_PART_PC98 opt_geom.h
GEOM_PART_VTOC8 opt_geom.h
GEOM_PC98 opt_geom.h
GEOM_RAID opt_geom.h
GEOM_RAID3 opt_geom.h
GEOM_SHSEC opt_geom.h
GEOM_STRIPE opt_geom.h
GEOM_SUNLABEL opt_geom.h
GEOM_UZIP opt_geom.h
GEOM_VIRSTOR opt_geom.h
GEOM_VOL opt_geom.h
GEOM_ZERO opt_geom.h
KDTRACE_HOOKS opt_kdtrace.h
KSTACK_MAX_PAGES
KSTACK_PAGES
KTRACE
KTRACE_REQUEST_POOL opt_ktrace.h
LIBICONV
MAC opt_global.h
MAC_BIBA opt_dontuse.h
MAC_BSDEXTENDED opt_dontuse.h
MAC_IFOFF opt_dontuse.h
MAC_LOMAC opt_dontuse.h
MAC_MLS opt_dontuse.h
MAC_NONE opt_dontuse.h
MAC_PARTITION opt_dontuse.h
MAC_PORTACL opt_dontuse.h
MAC_SEEOTHERUIDS opt_dontuse.h
MAC_STATIC opt_mac.h
MAC_STUB opt_dontuse.h
MAC_TEST opt_dontuse.h
MD_ROOT opt_md.h
MD_ROOT_SIZE opt_md.h
MFI_DEBUG opt_mfi.h
MFI_DECODE_LOG opt_mfi.h
MPROF_BUFFERS opt_mprof.h
MPROF_HASH_SIZE opt_mprof.h
NEW_PCIB opt_global.h
NO_ADAPTIVE_MUTEXES opt_adaptive_mutexes.h
NO_ADAPTIVE_RWLOCKS
NO_ADAPTIVE_SX
NO_SYSCTL_DESCR opt_global.h
NSWBUF_MIN opt_swap.h
MBUF_PACKET_ZONE_DISABLE opt_global.h
PANIC_REBOOT_WAIT_TIME opt_panic.h
PPC_DEBUG opt_ppc.h
PPC_PROBE_CHIPSET opt_ppc.h
PPS_SYNC opt_ntp.h
PREEMPTION opt_sched.h
QUOTA
SCHED_4BSD opt_sched.h
SCHED_STATS opt_sched.h
SCHED_ULE opt_sched.h
SHOW_BUSYBUFS
SLEEPQUEUE_PROFILING
SLHCI_DEBUG opt_slhci.h
SPX_HACK
STACK opt_stack.h
SUIDDIR
MSGMNB opt_sysvipc.h
MSGMNI opt_sysvipc.h
MSGSEG opt_sysvipc.h
MSGSSZ opt_sysvipc.h
MSGTQL opt_sysvipc.h
SEMMAP opt_sysvipc.h
SEMMNI opt_sysvipc.h
SEMMNS opt_sysvipc.h
SEMMNU opt_sysvipc.h
SEMMSL opt_sysvipc.h
SEMOPM opt_sysvipc.h
SEMUME opt_sysvipc.h
SHMALL opt_sysvipc.h
SHMMAX opt_sysvipc.h
SHMMAXPGS opt_sysvipc.h
SHMMIN opt_sysvipc.h
SHMMNI opt_sysvipc.h
SHMSEG opt_sysvipc.h
SYSVMSG opt_sysvipc.h
SYSVSEM opt_sysvipc.h
SYSVSHM opt_sysvipc.h
SW_WATCHDOG opt_watchdog.h
TURNSTILE_PROFILING
VFS_AIO
VERBOSE_SYSINIT opt_global.h
WLCACHE opt_wavelan.h
WLDEBUG opt_wavelan.h
# POSIX kernel options
P1003_1B_MQUEUE opt_posix.h
P1003_1B_SEMAPHORES opt_posix.h
_KPOSIX_PRIORITY_SCHEDULING opt_posix.h
# Do we want the config file compiled into the kernel?
INCLUDE_CONFIG_FILE opt_config.h
# Options for static filesystems. 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.
CD9660 opt_dontuse.h
CODA opt_dontuse.h
EXT2FS opt_dontuse.h
FDESCFS opt_dontuse.h
FFS opt_dontuse.h
HPFS opt_dontuse.h
MSDOSFS opt_dontuse.h
NTFS opt_dontuse.h
NULLFS opt_dontuse.h
NWFS opt_dontuse.h
PORTALFS opt_dontuse.h
PROCFS opt_dontuse.h
PSEUDOFS opt_dontuse.h
REISERFS opt_dontuse.h
SMBFS opt_dontuse.h
TMPFS opt_dontuse.h
UDF opt_dontuse.h
UNIONFS opt_dontuse.h
# Pseudofs debugging
PSEUDOFS_TRACE opt_pseudofs.h
# In-kernel GSS-API
KGSSAPI opt_kgssapi.h
KGSSAPI_DEBUG opt_kgssapi.h
# These static filesystems have 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.
NFSCLIENT opt_nfs.h
NFSSERVER opt_nfs.h
# Use these options to compile the experimental nfs client and/or
# server that supports NFSv4 into a kernel.
# NFSCL - client
# NFSD - server
NFSCL opt_nfs.h
NFSD opt_nfs.h
# filesystems and libiconv bridge
CD9660_ICONV opt_dontuse.h
MSDOSFS_ICONV opt_dontuse.h
NTFS_ICONV opt_dontuse.h
UDF_ICONV opt_dontuse.h
# 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
# On small, embedded systems, it can be useful to turn off support for
# snapshots. It saves about 30-40k for a feature that would be lightly
# used, if it is used at all.
NO_FFS_SNAPSHOT opt_ffs.h
# Enabling this option turns on support for Access Control Lists in UFS,
# which can be used to support high security configurations. Depends on
# UFS_EXTATTR.
UFS_ACL opt_ufs.h
# Enabling this option turns on support for extended attributes in UFS-based
# filesystems, which can be used to support high security configurations
# as well as new filesystem features.
UFS_EXTATTR opt_ufs.h
UFS_EXTATTR_AUTOSTART opt_ufs.h
# Enable fast hash lookups for large directories on UFS-based filesystems.
UFS_DIRHASH opt_ufs.h
# Enable gjournal-based UFS journal.
UFS_GJOURNAL opt_ufs.h
# The below sentence is not in English, and neither is this one.
# We plan to remove the static dependences above, 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).
NFS_ROOT opt_nfsroot.h
# SMB/CIFS requester
NETSMB opt_netsmb.h
# Options used only in subr_param.c.
HZ opt_param.h
MAXFILES opt_param.h
NBUF opt_param.h
NSFBUFS opt_param.h
VM_BCACHE_SIZE_MAX opt_param.h
VM_SWZONE_SIZE_MAX opt_param.h
MAXUSERS
DFLDSIZ opt_param.h
MAXDSIZ opt_param.h
MAXSSIZ opt_param.h
# Generic SCSI options.
CAM_MAX_HIGHPOWER opt_cam.h
CAMDEBUG opt_cam.h
CAM_DEBUG_DELAY 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_NO_SENSE_STRINGS opt_scsi.h
SCSI_NO_OP_STRINGS opt_scsi.h
# Options used only in cam/ata/ata_da.c
ADA_TEST_FAILURE opt_ada.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/scsi_sa.c.
SA_IO_TIMEOUT opt_sa.h
SA_SPACE_TIMEOUT opt_sa.h
SA_REWIND_TIMEOUT opt_sa.h
SA_ERASE_TIMEOUT opt_sa.h
SA_1FM_AT_EOD opt_sa.h
# Options used only in cam/scsi/scsi_pt.c
SCSI_PT_DEFAULT_TIMEOUT opt_pt.h
# Options used only in cam/scsi/scsi_ses.c
SES_ENABLE_PASSTHROUGH opt_ses.h
# Options used in dev/sym/ (Symbios SCSI driver).
SYM_SETUP_LP_PROBE_MAP opt_sym.h #-Low Priority Probe Map (bits)
# Allows the ncr to take precedence
# 1 (1<<0) -> 810a, 860
# 2 (1<<1) -> 825a, 875, 885, 895
# 4 (1<<2) -> 895a, 896, 1510d
SYM_SETUP_SCSI_DIFF opt_sym.h #-HVD support for 825a, 875, 885
# disabled:0 (default), enabled:1
SYM_SETUP_PCI_PARITY opt_sym.h #-PCI parity checking
# disabled:0, enabled:1 (default)
SYM_SETUP_MAX_LUN opt_sym.h #-Number of LUNs supported
# default:8, range:[1..64]
# Options used only in pci/ncr.c
SCSI_NCR_DEBUG 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 dev/isp/*
ISP_TARGET_MODE opt_isp.h
ISP_FW_CRASH_DUMP opt_isp.h
ISP_DEFAULT_ROLES opt_isp.h
ISP_INTERNAL_TARGET opt_isp.h
# Options used only in dev/iscsi
ISCSI_INITIATOR_DEBUG opt_iscsi_initiator.h
# Options used in the 'ata' ATA/ATAPI driver
ATA_STATIC_ID opt_ata.h
ATA_NOPCI opt_ata.h
ATA_REQUEST_TIMEOUT opt_ata.h
ATA_CAM opt_ata.h
# Net stuff.
ACCEPT_FILTER_DATA
ACCEPT_FILTER_DNS
ACCEPT_FILTER_HTTP
ALTQ opt_global.h
ALTQ_CBQ opt_altq.h
ALTQ_CDNR opt_altq.h
ALTQ_DEBUG opt_altq.h
ALTQ_HFSC opt_altq.h
ALTQ_NOPCC opt_altq.h
ALTQ_PRIQ opt_altq.h
ALTQ_RED opt_altq.h
ALTQ_RIO opt_altq.h
BOOTP opt_bootp.h
BOOTP_BLOCKSIZE opt_bootp.h
BOOTP_COMPAT opt_bootp.h
BOOTP_NFSROOT opt_bootp.h
BOOTP_NFSV3 opt_bootp.h
BOOTP_WIRED_TO opt_bootp.h
DEVICE_POLLING
DEV_ENC opt_enc.h
DEV_PF opt_pf.h
DEV_PFLOG opt_pf.h
DEV_PFSYNC opt_pf.h
DEV_VLAN opt_vlan.h
DUMMYNET opt_ipdn.h
ETHER_8022 opt_ef.h
ETHER_8023 opt_ef.h
ETHER_II opt_ef.h
ETHER_SNAP opt_ef.h
INET opt_inet.h
INET6 opt_inet6.h
IPDIVERT
IPFILTER opt_ipfilter.h
IPFILTER_DEFAULT_BLOCK opt_ipfilter.h
IPFILTER_LOG opt_ipfilter.h
IPFILTER_LOOKUP opt_ipfilter.h
IPFIREWALL opt_ipfw.h
IPFIREWALL_DEFAULT_TO_ACCEPT opt_ipfw.h
IPFIREWALL_FORWARD opt_ipfw.h
IPFIREWALL_NAT opt_ipfw.h
IPFIREWALL_VERBOSE opt_ipfw.h
IPFIREWALL_VERBOSE_LIMIT opt_ipfw.h
IPSEC opt_ipsec.h
IPSEC_DEBUG opt_ipsec.h
IPSEC_FILTERTUNNEL opt_ipsec.h
IPSEC_NAT_T opt_ipsec.h
IPSTEALTH
IPX
KRPC
LIBALIAS
LIBMBPOOL
LIBMCHAIN
MBUF_PROFILING
MBUF_STRESS_TEST
MROUTING opt_mrouting.h
NCP
NETATALK opt_atalk.h
NFSLOCKD
PCBGROUP opt_pcbgroup.h
RADIX_MPATH opt_mpath.h
ROUTETABLES opt_route.h
SLIP_IFF_OPTS opt_slip.h
TCPDEBUG
TCP_OFFLOAD_DISABLE opt_inet.h #Disable code to dispatch tcp offloading
TCP_SIGNATURE opt_inet.h
TCP_SORECEIVE_STREAM opt_inet.h
VLAN_ARRAY opt_vlan.h
XBONEHACK
FLOWTABLE opt_route.h
#
# SCTP
#
SCTP opt_sctp.h
SCTP_DEBUG opt_sctp.h # Enable debug printfs
SCTP_WITH_NO_CSUM opt_sctp.h # Use this at your peril
SCTP_LOCK_LOGGING opt_sctp.h # Log to KTR lock activity
SCTP_MBUF_LOGGING opt_sctp.h # Log to KTR general mbuf aloc/free
SCTP_MBCNT_LOGGING opt_sctp.h # Log to KTR mbcnt activity
SCTP_PACKET_LOGGING opt_sctp.h # Log to a packet buffer last N packets
SCTP_LTRACE_CHUNKS opt_sctp.h # Log to KTR chunks processed
SCTP_LTRACE_ERRORS opt_sctp.h # Log to KTR error returns.
SCTP_USE_PERCPU_STAT opt_sctp.h # Use per cpu stats.
SCTP_MCORE_INPUT opt_sctp.h # Have multiple input threads for input mbufs
#
#
#
# Netgraph(4). Use option NETGRAPH to enable the base netgraph code.
# Each netgraph node type can be either be compiled into the kernel
# or loaded dynamically. To get the former, include the corresponding
# option below. Each type has its own man page, e.g. ng_async(4).
NETGRAPH
NETGRAPH_DEBUG opt_netgraph.h
NETGRAPH_ASYNC opt_netgraph.h
NETGRAPH_ATMLLC opt_netgraph.h
NETGRAPH_ATM_ATMPIF opt_netgraph.h
NETGRAPH_BLUETOOTH opt_netgraph.h
NETGRAPH_BLUETOOTH_BT3C opt_netgraph.h
NETGRAPH_BLUETOOTH_H4 opt_netgraph.h
NETGRAPH_BLUETOOTH_HCI opt_netgraph.h
NETGRAPH_BLUETOOTH_L2CAP opt_netgraph.h
NETGRAPH_BLUETOOTH_SOCKET opt_netgraph.h
NETGRAPH_BLUETOOTH_UBT opt_netgraph.h
NETGRAPH_BLUETOOTH_UBTBCMFW opt_netgraph.h
NETGRAPH_BPF opt_netgraph.h
NETGRAPH_BRIDGE opt_netgraph.h
NETGRAPH_CAR opt_netgraph.h
NETGRAPH_CISCO opt_netgraph.h
NETGRAPH_DEFLATE opt_netgraph.h
NETGRAPH_DEVICE opt_netgraph.h
NETGRAPH_ECHO opt_netgraph.h
NETGRAPH_EIFACE opt_netgraph.h
NETGRAPH_ETHER opt_netgraph.h
NETGRAPH_ETHER_ECHO opt_netgraph.h
NETGRAPH_FEC opt_netgraph.h
NETGRAPH_FRAME_RELAY opt_netgraph.h
NETGRAPH_GIF opt_netgraph.h
NETGRAPH_GIF_DEMUX opt_netgraph.h
NETGRAPH_HOLE opt_netgraph.h
NETGRAPH_IFACE opt_netgraph.h
NETGRAPH_IP_INPUT opt_netgraph.h
NETGRAPH_IPFW opt_netgraph.h
NETGRAPH_KSOCKET opt_netgraph.h
NETGRAPH_L2TP opt_netgraph.h
NETGRAPH_LMI opt_netgraph.h
# MPPC compression requires proprietary files (not included)
NETGRAPH_MPPC_COMPRESSION opt_netgraph.h
NETGRAPH_MPPC_ENCRYPTION opt_netgraph.h
NETGRAPH_NAT opt_netgraph.h
NETGRAPH_NETFLOW opt_netgraph.h
NETGRAPH_ONE2MANY opt_netgraph.h
NETGRAPH_PATCH opt_netgraph.h
NETGRAPH_PIPE opt_netgraph.h
NETGRAPH_PPP opt_netgraph.h
NETGRAPH_PPPOE opt_netgraph.h
NETGRAPH_PPTPGRE opt_netgraph.h
NETGRAPH_PRED1 opt_netgraph.h
NETGRAPH_RFC1490 opt_netgraph.h
NETGRAPH_SOCKET opt_netgraph.h
NETGRAPH_SPLIT opt_netgraph.h
NETGRAPH_SPPP opt_netgraph.h
NETGRAPH_TAG opt_netgraph.h
NETGRAPH_TCPMSS opt_netgraph.h
NETGRAPH_TEE opt_netgraph.h
NETGRAPH_TTY opt_netgraph.h
NETGRAPH_UI opt_netgraph.h
NETGRAPH_VJC opt_netgraph.h
NETGRAPH_VLAN opt_netgraph.h
# NgATM options
NGATM_ATM opt_netgraph.h
NGATM_ATMBASE opt_netgraph.h
NGATM_SSCOP opt_netgraph.h
NGATM_SSCFU opt_netgraph.h
NGATM_UNI opt_netgraph.h
NGATM_CCATM opt_netgraph.h
# DRM options
DRM_DEBUG opt_drm.h
ZERO_COPY_SOCKETS opt_zero.h
TI_PRIVATE_JUMBOS opt_ti.h
TI_JUMBO_HDRSPLIT opt_ti.h
BCE_JUMBO_HDRSPLIT opt_bce.h
# XXX Conflict: # of devices vs network protocol (Native ATM).
# This makes "atm.h" unusable.
NATM
# DPT driver debug flags
DPT_MEASURE_PERFORMANCE opt_dpt.h
DPT_HANDLE_TIMEOUTS opt_dpt.h
DPT_TIMEOUT_FACTOR opt_dpt.h
DPT_LOST_IRQ 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
NETATALKDEBUG opt_atalk.h
SI_DEBUG opt_debug_si.h
# Fb options
FB_DEBUG opt_fb.h
FB_INSTALL_CDEV opt_fb.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
BLKDEV_IOSIZE opt_global.h
BURN_BRIDGES opt_global.h
DEBUG opt_global.h
DEBUG_LOCKS opt_global.h
DEBUG_VFS_LOCKS opt_global.h
DFLTPHYS opt_global.h
DIAGNOSTIC opt_global.h
INVARIANT_SUPPORT opt_global.h
INVARIANTS opt_global.h
MAXPHYS opt_global.h
MCLSHIFT opt_global.h
MUTEX_DEBUG opt_global.h
MUTEX_NOINLINE opt_global.h
LOCK_PROFILING opt_global.h
LOCK_PROFILING_FAST opt_global.h
MSIZE opt_global.h
REGRESSION opt_global.h
RESTARTABLE_PANICS opt_global.h
RWLOCK_NOINLINE opt_global.h
SX_NOINLINE 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
VM_NRESERVLEVEL opt_vm.h
VM_LEVEL_0_ORDER opt_vm.h
NO_SWAPPING opt_vm.h
MALLOC_MAKE_FAILURES opt_vm.h
MALLOC_PROFILE opt_vm.h
MALLOC_DEBUG_MAXZONES opt_vm.h
# The MemGuard replacement allocator used for tamper-after-free detection
DEBUG_MEMGUARD opt_vm.h
# The RedZone malloc(9) protection
DEBUG_REDZONE opt_vm.h
# Standard SMP options
SMP opt_global.h
# Size of the kernel message buffer
MSGBUF_SIZE opt_msgbuf.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_WDELAYHASHSIZ opt_nfs.h
NFS_DEBUG opt_nfs.h
# For the Bt848/Bt848A/Bt849/Bt878/Bt879 driver
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
BROOKTREE_ALLOC_PAGES opt_bktr.h
BKTR_OVERRIDE_CARD opt_bktr.h
BKTR_OVERRIDE_TUNER opt_bktr.h
BKTR_OVERRIDE_DBX opt_bktr.h
BKTR_OVERRIDE_MSP opt_bktr.h
BKTR_SYSTEM_DEFAULT opt_bktr.h
BKTR_ALLOC_PAGES opt_bktr.h
BKTR_USE_PLL opt_bktr.h
BKTR_GPIO_ACCESS opt_bktr.h
BKTR_NO_MSP_RESET opt_bktr.h
BKTR_430_FX_MODE opt_bktr.h
BKTR_SIS_VIA_MODE opt_bktr.h
BKTR_USE_FREEBSD_SMBUS opt_bktr.h
BKTR_NEW_MSP34XX_DRIVER opt_bktr.h
BREAK_TO_DEBUGGER opt_comconsole.h
ALT_BREAK_TO_DEBUGGER opt_comconsole.h
# Options to support PPS
UART_PPS_ON_CTS opt_uart.h
# options for bus/device framework
BUS_DEBUG opt_bus.h
# options for USB support
USB_DEBUG opt_usb.h
USB_HOST_ALIGN opt_usb.h
USB_REQ_DEBUG opt_usb.h
USB_VERBOSE opt_usb.h
USB_EHCI_BIG_ENDIAN_DESC opt_usb.h
U3G_DEBUG opt_u3g.h
UKBD_DFLT_KEYMAP opt_ukbd.h
UPLCOM_INTR_INTERVAL opt_uplcom.h
UVSCOM_DEFAULT_OPKTSIZE opt_uvscom.h
UVSCOM_INTR_INTERVAL opt_uvscom.h
# Embedded system options
INIT_PATH
ROOTDEVNAME
FDC_DEBUG opt_fdc.h
PCFCLOCK_VERBOSE opt_pcfclock.h
PCFCLOCK_MAX_RETRIES opt_pcfclock.h
KTR opt_global.h
KTR_ALQ opt_ktr.h
KTR_MASK opt_ktr.h
KTR_CPUMASK opt_ktr.h
KTR_COMPILE opt_global.h
KTR_ENTRIES opt_global.h
KTR_VERBOSE opt_ktr.h
WITNESS opt_global.h
WITNESS_KDB opt_witness.h
WITNESS_SKIPSPIN opt_witness.h
# options for ACPI support
ACPI_DEBUG opt_acpi.h
ACPI_MAX_TASKS opt_acpi.h
ACPI_MAX_THREADS opt_acpi.h
# ISA support
DEV_ISA opt_isa.h
ISAPNP opt_isa.h
# various 'device presence' options.
DEV_BPF opt_bpf.h
DEV_MCA opt_mca.h
DEV_CARP opt_carp.h
DEV_SPLASH opt_splash.h
# EISA support
DEV_EISA opt_eisa.h
EISA_SLOTS opt_eisa.h
# ed driver
ED_HPP opt_ed.h
ED_3C503 opt_ed.h
ED_SIC opt_ed.h
# bce driver
BCE_DEBUG opt_bce.h
BCE_NVRAM_WRITE_SUPPORT opt_bce.h
# bxe driver
BXE_DEBUG opt_bxe.h
BXE_NVRAM_WRITE_SUPPORT opt_bxe.h
SOCKBUF_DEBUG opt_global.h
# options for ubsec driver
UBSEC_DEBUG opt_ubsec.h
UBSEC_RNDTEST opt_ubsec.h
UBSEC_NO_RNG opt_ubsec.h
# options for hifn driver
HIFN_DEBUG opt_hifn.h
HIFN_RNDTEST opt_hifn.h
# options for safenet driver
SAFE_DEBUG opt_safe.h
SAFE_NO_RNG opt_safe.h
SAFE_RNDTEST opt_safe.h
# syscons options
MAXCONS opt_syscons.h
SC_ALT_MOUSE_IMAGE opt_syscons.h
SC_CUT_SPACES2TABS opt_syscons.h
SC_CUT_SEPCHARS opt_syscons.h
SC_DEBUG_LEVEL opt_syscons.h
SC_DFLT_FONT opt_syscons.h
SC_DISABLE_KDBKEY opt_syscons.h
SC_DISABLE_REBOOT opt_syscons.h
SC_HISTORY_SIZE opt_syscons.h
SC_KERNEL_CONS_ATTR opt_syscons.h
SC_KERNEL_CONS_REV_ATTR opt_syscons.h
SC_MOUSE_CHAR opt_syscons.h
SC_NO_CUTPASTE opt_syscons.h
SC_NO_FONT_LOADING opt_syscons.h
SC_NO_HISTORY opt_syscons.h
SC_NO_MODE_CHANGE opt_syscons.h
SC_NO_SUSPEND_VTYSWITCH opt_syscons.h
SC_NO_SYSMOUSE opt_syscons.h
SC_NORM_ATTR opt_syscons.h
SC_NORM_REV_ATTR opt_syscons.h
SC_PIXEL_MODE opt_syscons.h
SC_RENDER_DEBUG opt_syscons.h
SC_TWOBUTTON_MOUSE opt_syscons.h
# teken terminal emulator options
TEKEN_CONS25 opt_teken.h
TEKEN_UTF8 opt_teken.h
# options for printf
PRINTF_BUFR_SIZE opt_printf.h
# kbd options
KBD_DISABLE_KEYMAP_LOAD opt_kbd.h
KBD_INSTALL_CDEV opt_kbd.h
KBD_MAXRETRY opt_kbd.h
KBD_MAXWAIT opt_kbd.h
KBD_RESETDELAY opt_kbd.h
KBDIO_DEBUG opt_kbd.h
# options for the Atheros driver
ATH_DEBUG opt_ath.h
ATH_TXBUF opt_ath.h
ATH_RXBUF opt_ath.h
ATH_DIAGAPI opt_ath.h
ATH_TX99_DIAG opt_ath.h
ATH_ENABLE_11N opt_ah.h
# options for the Atheros hal
AH_SUPPORT_AR5416 opt_ah.h
# XXX For now, this breaks non-AR9130 chipsets, so only use it
# XXX when actually targetting AR9130.
AH_SUPPORT_AR9130 opt_ah.h
AH_DEBUG opt_ah.h
AH_ASSERT opt_ah.h
AH_DEBUG_ALQ opt_ah.h
AH_REGOPS_FUNC opt_ah.h
AH_WRITE_REGDOMAIN opt_ah.h
AH_DEBUG_COUNTRY opt_ah.h
AH_WRITE_EEPROM opt_ah.h
AH_PRIVATE_DIAG opt_ah.h
AH_NEED_DESC_SWAP opt_ah.h
AH_USE_INIPDGAIN opt_ah.h
AH_MAXCHAN opt_ah.h
AH_RXCFG_SDMAMW_4BYTES opt_ah.h
# AR5416 and later interrupt mitigation
# XXX do not use this for AR9130
AH_AR5416_INTERRUPT_MITIGATION opt_ah.h
# options for the Broadcom BCM43xx driver (bwi)
BWI_DEBUG opt_bwi.h
BWI_DEBUG_VERBOSE opt_bwi.h
# options for the Marvell 8335 wireless driver
MALO_DEBUG opt_malo.h
MALO_TXBUF opt_malo.h
MALO_RXBUF opt_malo.h
# options for the Marvell wireless driver
MWL_DEBUG opt_mwl.h
MWL_TXBUF opt_mwl.h
MWL_RXBUF opt_mwl.h
MWL_DIAGAPI opt_mwl.h
MWL_AGGR_SIZE opt_mwl.h
MWL_TX_NODROP opt_mwl.h
# dcons options
DCONS_BUF_SIZE opt_dcons.h
DCONS_POLL_HZ opt_dcons.h
DCONS_FORCE_CONSOLE opt_dcons.h
DCONS_FORCE_GDB opt_dcons.h
# HWPMC options
HWPMC_HOOKS
# XBOX options for FreeBSD/i386, but some files are MI
XBOX opt_xbox.h
# XFS
XFS
# Interrupt filtering
INTR_FILTER
# 802.11 support layer
IEEE80211_DEBUG opt_wlan.h
IEEE80211_DEBUG_REFCNT opt_wlan.h
IEEE80211_AMPDU_AGE opt_wlan.h
IEEE80211_SUPPORT_MESH opt_wlan.h
IEEE80211_SUPPORT_SUPERG opt_wlan.h
IEEE80211_SUPPORT_TDMA opt_wlan.h
IEEE80211_ALQ opt_wlan.h
# 802.11 TDMA support
TDMA_SLOTLEN_DEFAULT opt_tdma.h
TDMA_SLOTCNT_DEFAULT opt_tdma.h
TDMA_BINTVAL_DEFAULT opt_tdma.h
TDMA_TXRATE_11B_DEFAULT opt_tdma.h
TDMA_TXRATE_11G_DEFAULT opt_tdma.h
TDMA_TXRATE_11A_DEFAULT opt_tdma.h
TDMA_TXRATE_TURBO_DEFAULT opt_tdma.h
TDMA_TXRATE_HALF_DEFAULT opt_tdma.h
TDMA_TXRATE_QUARTER_DEFAULT opt_tdma.h
TDMA_TXRATE_11NA_DEFAULT opt_tdma.h
TDMA_TXRATE_11NG_DEFAULT opt_tdma.h
# Network stack virtualization options
VIMAGE opt_global.h
VNET_DEBUG opt_global.h
# Common Flash Interface (CFI) options
CFI_SUPPORT_STRATAFLASH opt_cfi.h
CFI_ARMEDANDDANGEROUS opt_cfi.h
# Sound options
SND_DEBUG opt_snd.h
SND_DIAGNOSTIC opt_snd.h
SND_FEEDER_MULTIFORMAT opt_snd.h
SND_FEEDER_FULL_MULTIFORMAT opt_snd.h
SND_FEEDER_RATE_HP opt_snd.h
SND_PCM_64 opt_snd.h
SND_OLDSTEREO opt_snd.h
X86BIOS
# Flattened device tree options
FDT opt_platform.h
FDT_DTB_STATIC opt_platform.h
# OFED Infiniband stack
OFED opt_ofed.h
OFED_DEBUG_INIT opt_ofed.h
SDP opt_ofed.h
SDP_DEBUG opt_ofed.h
IPOIB_DEBUG opt_ofed.h
IPOIB_CM opt_ofed.h
# Resource Accounting
RACCT opt_global.h
# Resource Limits
RCTL opt_global.h
# At least one of the AR71XX ubiquiti boards has a Redboot configuration
# that "lies" about the amount of RAM it has. Until a cleaner method is
# defined, this option will suffice in overriding what Redboot says.
AR71XX_REALMEM opt_global.h
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