freebsd-skq/sys/conf/options

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1999-08-28 01:08:13 +00:00
# $FreeBSD$
#
# 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
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# 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
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# "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
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# "opt_<option-name-in-lower-case>.h" if it affects only some files.
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# 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
AACRAID_DEBUG opt_aacraid.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.
ALT_BREAK_TO_DEBUGGER opt_kdb.h
BREAK_TO_DEBUGGER opt_kdb.h
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
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KLD_DEBUG opt_kld.h
SYSCTL_DEBUG opt_sysctl.h
EARLY_PRINTF opt_global.h
TEXTDUMP_PREFERRED opt_ddb.h
TEXTDUMP_VERBOSE opt_ddb.h
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# Miscellaneous options.
ADAPTIVE_LOCKMGRS
ALQ
ALTERA_SDCARD_FAST_SIM opt_altera_sdcard.h
ATSE_CFI_HACK opt_cfi.h
AUDIT opt_global.h
BOOTHOWTO opt_global.h
BOOTVERBOSE opt_global.h
CALLOUT_PROFILING
CAPABILITIES opt_capsicum.h
CAPABILITY_MODE opt_capsicum.h
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COMPAT_43 opt_compat.h
COMPAT_43TTY opt_compat.h
COMPAT_FREEBSD4 opt_compat.h
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COMPAT_FREEBSD5 opt_compat.h
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COMPAT_FREEBSD6 opt_compat.h
COMPAT_FREEBSD7 opt_compat.h
COMPAT_FREEBSD9 opt_compat.h
COMPAT_FREEBSD10 opt_compat.h
COMPAT_LINUXAPI opt_compat.h
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COMPILING_LINT opt_global.h
CY_PCI_FASTINTR
DEADLKRES opt_watchdog.h
DIRECTIO
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FILEMON opt_dontuse.h
FFCLOCK
FULL_PREEMPTION opt_sched.h
GZIO opt_gzio.h
IMAGACT_BINMISC opt_dontuse.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_LABEL_GPT opt_geom.h
GEOM_LINUX_LVM opt_geom.h
GEOM_MAP 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_BSD64 opt_geom.h
GEOM_PART_EBR opt_geom.h
GEOM_PART_EBR_COMPAT opt_geom.h
GEOM_PART_GPT opt_geom.h
GEOM_PART_LDM 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
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GEOM_RAID3 opt_geom.h
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GEOM_SHSEC opt_geom.h
GEOM_STRIPE opt_geom.h
GEOM_SUNLABEL opt_geom.h
GEOM_UNCOMPRESS opt_geom.h
GEOM_UNCOMPRESS_DEBUG opt_geom.h
GEOM_UZIP opt_geom.h
GEOM_VINUM opt_geom.h
GEOM_VIRSTOR opt_geom.h
GEOM_VOL opt_geom.h
GEOM_ZERO opt_geom.h
KDTRACE_HOOKS opt_global.h
KDTRACE_FRAME opt_kdtrace.h
KN_HASHSIZE opt_kqueue.h
KSTACK_MAX_PAGES
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KSTACK_PAGES
KSTACK_USAGE_PROF
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_FSTYPE opt_md.h
MD_ROOT_SIZE opt_md.h
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MFI_DEBUG opt_mfi.h
MFI_DECODE_LOG opt_mfi.h
MPROF_BUFFERS opt_mprof.h
MPROF_HASH_SIZE opt_mprof.h
Reimplement how PCI-PCI bridges manage their I/O windows. Previously the driver would verify that requests for child devices were confined to any existing I/O windows, but the driver relied on the firmware to initialize the windows and would never grow the windows for new requests. Now the driver actively manages the I/O windows. This is implemented by allocating a bus resource for each I/O window from the parent PCI bus and suballocating that resource to child devices. The suballocations are managed by creating an rman for each I/O window. The suballocated resources are mapped by passing the bus_activate_resource() call up to the parent PCI bus. Windows are grown when needed by using bus_adjust_resource() to adjust the resource allocated from the parent PCI bus. If the adjust request succeeds, the window is adjusted and the suballocation request for the child device is retried. When growing a window, the rman_first_free_region() and rman_last_free_region() routines are used to determine if the front or end of the existing I/O window is free. From using that, the smallest ranges that need to be added to either the front or back of the window are computed. The driver will first try to grow the window in whichever direction requires the smallest growth first followed by the other direction if that fails. Subtractive bridges will first attempt to satisfy requests for child resources from I/O windows (including attempts to grow the windows). If that fails, the request is passed up to the parent PCI bus directly however. The PCI-PCI bridge driver will try to use firmware-assigned ranges for child BARs first and only allocate a "fresh" range if that specific range cannot be accommodated in the I/O window. This allows systems where the firmware assigns resources during boot but later wipes the I/O windows (some ACPI BIOSen are known to do this) to "rediscover" the original I/O window ranges. The ACPI Host-PCI bridge driver has been adjusted to correctly honor hw.acpi.host_mem_start and the I/O port equivalent when a PCI-PCI bridge makes a wildcard request for an I/O window range. The new PCI-PCI bridge driver is only enabled if the NEW_PCIB kernel option is enabled. This is a transition aide to allow platforms that do not yet support bus_activate_resource() and bus_adjust_resource() in their Host-PCI bridge drivers (and possibly other drivers as needed) to use the old driver for now. Once all platforms support the new driver, the kernel option and old driver will be removed. PR: kern/143874 kern/149306 Tested by: mav
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NEW_PCIB opt_global.h
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NO_ADAPTIVE_MUTEXES opt_adaptive_mutexes.h
NO_ADAPTIVE_RWLOCKS
NO_ADAPTIVE_SX
NO_EVENTTIMERS opt_timer.h
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
PCI_IOV opt_global.h
PPC_DEBUG opt_ppc.h
PPC_PROBE_CHIPSET opt_ppc.h
PPS_SYNC opt_ntp.h
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PREEMPTION opt_sched.h
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QUOTA
SCHED_4BSD opt_sched.h
SCHED_STATS opt_sched.h
SCHED_ULE opt_sched.h
SLEEPQUEUE_PROFILING
SLHCI_DEBUG opt_slhci.h
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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
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
UMTX_PROFILING
VFS_AIO
VERBOSE_SYSINIT
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WLCACHE opt_wavelan.h
WLDEBUG opt_wavelan.h
# POSIX kernel options
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P1003_1B_MQUEUE opt_posix.h
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P1003_1B_SEMAPHORES opt_posix.h
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_KPOSIX_PRIORITY_SCHEDULING opt_posix.h
# Do we want the config file compiled into the kernel?
INCLUDE_CONFIG_FILE opt_config.h
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# 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.
AUTOFS opt_dontuse.h
CD9660 opt_dontuse.h
EXT2FS opt_dontuse.h
FDESCFS opt_dontuse.h
FFS opt_dontuse.h
FUSE opt_dontuse.h
MSDOSFS opt_dontuse.h
NANDFS opt_dontuse.h
NULLFS 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
ZFS opt_dontuse.h
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# Pseudofs debugging
PSEUDOFS_TRACE opt_pseudofs.h
Implement support for RPCSEC_GSS authentication to both the NFS client and server. This replaces the RPC implementation of the NFS client and server with the newer RPC implementation originally developed (actually ported from the userland sunrpc code) to support the NFS Lock Manager. I have tested this code extensively and I believe it is stable and that performance is at least equal to the legacy RPC implementation. The NFS code currently contains support for both the new RPC implementation and the older legacy implementation inherited from the original NFS codebase. The default is to use the new implementation - add the NFS_LEGACYRPC option to fall back to the old code. When I merge this support back to RELENG_7, I will probably change this so that users have to 'opt in' to get the new code. To use RPCSEC_GSS on either client or server, you must build a kernel which includes the KGSSAPI option and the crypto device. On the userland side, you must build at least a new libc, mountd, mount_nfs and gssd. You must install new versions of /etc/rc.d/gssd and /etc/rc.d/nfsd and add 'gssd_enable=YES' to /etc/rc.conf. As long as gssd is running, you should be able to mount an NFS filesystem from a server that requires RPCSEC_GSS authentication. The mount itself can happen without any kerberos credentials but all access to the filesystem will be denied unless the accessing user has a valid ticket file in the standard place (/tmp/krb5cc_<uid>). There is currently no support for situations where the ticket file is in a different place, such as when the user logged in via SSH and has delegated credentials from that login. This restriction is also present in Solaris and Linux. In theory, we could improve this in future, possibly using Brooks Davis' implementation of variant symlinks. Supporting RPCSEC_GSS on a server is nearly as simple. You must create service creds for the server in the form 'nfs/<fqdn>@<REALM>' and install them in /etc/krb5.keytab. The standard heimdal utility ktutil makes this fairly easy. After the service creds have been created, you can add a '-sec=krb5' option to /etc/exports and restart both mountd and nfsd. The only other difference an administrator should notice is that nfsd doesn't fork to create service threads any more. In normal operation, there will be two nfsd processes, one in userland waiting for TCP connections and one in the kernel handling requests. The latter process will create as many kthreads as required - these should be visible via 'top -H'. The code has some support for varying the number of service threads according to load but initially at least, nfsd uses a fixed number of threads according to the value supplied to its '-n' option. Sponsored by: Isilon Systems MFC after: 1 month
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# 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.
# 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
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
Introduce support for POSIX.1e ACLs on UFS-based file systems. This implementation is still experimental, and while fairly broadly tested, is not yet intended for production use. Support for POSIX.1e ACLs on UFS will not be MFC'd to RELENG_4. This implementation works by providing implementations of VOP_[GS]ETACL() for FFS, as well as modifying the appropriate access control and file creation routines. In this implementation, ACLs are backed into extended attributes; the base ACL (owner, group, other) permissions remain in the inode for performance and compatibility reasons, so only the extended and default ACLs are placed in extended attributes. The logic for ACL evaluation is provided by the fs-independent kern/kern_acl.c. o Introduce UFS_ACL, a compile-time configuration option that enables support for ACLs on FFS (and potentially other UFS-based file systems). o Introduce ufs_getacl(), ufs_setacl(), ufs_aclcheck(), which respectively get, set, and check the ACLs on the passed vnode. o Introduce ufs_sync_acl_from_inode(), ufs_sync_inode_from_acl() to maintain access control information between inode permissions and extended attribute data. o Modify ufs_access() to load a file access ACL and invoke vaccess_acl_posix1e() if ACLs are available on the file system o Modify ufs_mkdir() and ufs_makeinode() to associate ACLs with newly created directories and files, inheriting from the parent directory's default ACL. o Enable these new vnode operations and conditionally compiled code paths if UFS_ACL is defined. A few notes: o This implementation is fairly widely tested, but still should be considered experimental. o Currently, ACLs are not exported via NFS, instead, the summarizing file mode/etc from the inode is. This results in conservative protection behavior, similar to the behavior of ACL-nonaware programs acting locally. o It is possible that underlying binary data formats associated with this implementation may change. Consumers of the implementation should expect to find their local configuration obsoleted in the next few months, resulting in possible loss of ACL data during an upgrade. o The extended attributes interface and implementation is still undergoing modification to address portable interface concerns, as well as performance. o Many applications do not yet correctly handle ACLs. In general, due to the POSIX.1e ACL model, behavior of ACL-unaware applications will be conservative with respects to file protection; some caution is recommended. o Instructions for configuring and maintaining ACLs on UFS will be committed in the near future; in the mean time it is possible to reference the README included in the last UFS ACL distribution placed in the TrustedBSD web site: http://www.TrustedBSD.org/downloads/ Substantial debugging, hardware, travel, or connectivity support for this project was provided by: BSDi, Safeport Network Services, and NAI Labs. Significant coding contributions were made by Chris Faulhaber. Additional support was provided by Brian Feldman, Thomas Moestl, and Ilmar Habibulin. Reviewed by: jedgar, keichii, mckusick, trustedbsd-discuss, freebsd-fs Obtained from: TrustedBSD Project
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# 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
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# 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
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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.
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CAM_MAX_HIGHPOWER opt_cam.h
CAMDEBUG opt_cam.h
CAM_DEBUG_COMPILE opt_cam.h
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CAM_DEBUG_DELAY opt_cam.h
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CAM_DEBUG_BUS opt_cam.h
CAM_DEBUG_TARGET opt_cam.h
CAM_DEBUG_LUN opt_cam.h
CAM_DEBUG_FLAGS opt_cam.h
CAM_BOOT_DELAY opt_cam.h
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SCSI_DELAY opt_scsi.h
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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
ATA_STATIC_ID opt_ada.h
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# 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]
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# Options used only in dev/ncr/*
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SCSI_NCR_DEBUG opt_ncr.h
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SCSI_NCR_MAX_SYNC opt_ncr.h
SCSI_NCR_MAX_WIDE opt_ncr.h
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SCSI_NCR_MYADDR opt_ncr.h
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# 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
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# Options used only in dev/iscsi
ISCSI_INITIATOR_DEBUG opt_iscsi_initiator.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_FAIRQ 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
DUMMYNET opt_ipdn.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
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IPFIREWALL opt_ipfw.h
IPFIREWALL_DEFAULT_TO_ACCEPT 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
KRPC
LIBALIAS
LIBMBPOOL
LIBMCHAIN
MBUF_PROFILING
MBUF_STRESS_TEST
MROUTING opt_mrouting.h
NFSLOCKD
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
PCBGROUP opt_pcbgroup.h
PF_DEFAULT_TO_DROP opt_pf.h
RADIX_MPATH opt_mpath.h
ROUTETABLES opt_route.h
Several years after initial development, merge prototype support for linking NIC Receive Side Scaling (RSS) to the network stack's connection-group implementation. This prototype (and derived patches) are in use at Juniper and several other FreeBSD-using companies, so despite some reservations about its maturity, merge the patch to the base tree so that it can be iteratively refined in collaboration rather than maintained as a set of gradually diverging patch sets. (1) Merge a software implementation of the Toeplitz hash specified in RSS implemented by David Malone. This is used to allow suitable pcbgroup placement of connections before the first packet is received from the NIC. Software hashing is generally avoided, however, due to high cost of the hash on general-purpose CPUs. (2) In in_rss.c, maintain authoritative versions of RSS state intended to be pushed to each NIC, including keying material, hash algorithm/ configuration, and buckets. Provide software-facing interfaces to hash 2- and 4-tuples for IPv4 and IPv6 using both the RSS standardised Toeplitz and a 'naive' variation with a hash efficient in software but with poor distribution properties. Implement rss_m2cpuid()to be used by netisr and other load balancing code to look up the CPU on which an mbuf should be processed. (3) In the Ethernet link layer, allow netisr distribution using RSS as a source of policy as an alternative to source ordering; continue to default to direct dispatch (i.e., don't try and requeue packets for processing on the 'right' CPU if they arrive in a directly dispatchable context). (4) Allow RSS to control tuning of connection groups in order to align groups with RSS buckets. If a packet arrives on a protocol using connection groups, and contains a suitable hardware-generated hash, use that hash value to select the connection group for pcb lookup for both IPv4 and IPv6. If no hardware-generated Toeplitz hash is available, we fall back on regular PCB lookup risking contention rather than pay the cost of Toeplitz in software -- this is a less scalable but, at my last measurement, faster approach. As core counts go up, we may want to revise this strategy despite CPU overhead. Where device drivers suitably configure NICs, and connection groups / RSS are enabled, this should avoid both lock and line contention during connection lookup for TCP. This commit does not modify any device drivers to tune device RSS configuration to the global RSS configuration; patches are in circulation to do this for at least Chelsio T3 and Intel 1G/10G drivers. Currently, the KPI for device drivers is not particularly robust, nor aware of more advanced features such as runtime reconfiguration/rebalancing. This will hopefully prove a useful starting point for refinement. No MFC is scheduled as we will first want to nail down a more mature and maintainable KPI/KBI for device drivers. Sponsored by: Juniper Networks (original work) Sponsored by: EMC/Isilon (patch update and merge)
2014-03-15 00:57:50 +00:00
RSS opt_rss.h
1999-08-10 09:42:32 +00:00
SLIP_IFF_OPTS opt_slip.h
1997-09-16 18:36:06 +00:00
TCPDEBUG
SIFTR
TCP_OFFLOAD opt_inet.h # Enable code to dispatch TCP offloading
Initial import of RFC 2385 (TCP-MD5) digest support. This is the first of two commits; bringing in the kernel support first. This can be enabled by compiling a kernel with options TCP_SIGNATURE and FAST_IPSEC. For the uninitiated, this is a TCP option which provides for a means of authenticating TCP sessions which came into being before IPSEC. It is still relevant today, however, as it is used by many commercial router vendors, particularly with BGP, and as such has become a requirement for interconnect at many major Internet points of presence. Several parts of the TCP and IP headers, including the segment payload, are digested with MD5, including a shared secret. The PF_KEY interface is used to manage the secrets using security associations in the SADB. There is a limitation here in that as there is no way to map a TCP flow per-port back to an SPI without polluting tcpcb or using the SPD; the code to do the latter is unstable at this time. Therefore this code only supports per-host keying granularity. Whilst FAST_IPSEC is mutually exclusive with KAME IPSEC (and thus IPv6), TCP_SIGNATURE applies only to IPv4. For the vast majority of prospective users of this feature, this will not pose any problem. This implementation is output-only; that is, the option is honoured when responding to a host initiating a TCP session, but no effort is made [yet] to authenticate inbound traffic. This is, however, sufficient to interwork with Cisco equipment. Tested with a Cisco 2501 running IOS 12.0(27), and Quagga 0.96.4 with local patches. Patches for tcpdump to validate TCP-MD5 sessions are also available from me upon request. Sponsored by: sentex.net
2004-02-11 04:26:04 +00:00
TCP_SIGNATURE opt_inet.h
2006-01-30 13:45:15 +00:00
VLAN_ARRAY opt_vlan.h
XBONEHACK
2009-06-09 21:55:28 +00:00
FLOWTABLE opt_route.h
FLOWTABLE_HASH_ALL 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
SCTP_LOCAL_TRACE_BUF opt_sctp.h # Use tracebuffer exported via sysctl
SCTP_DETAILED_STR_STATS opt_sctp.h # Use per PR-SCTP policy stream stats
#
#
#
# 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
2001-09-26 23:50:17 +00:00
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
2005-02-05 12:15:56 +00:00
NETGRAPH_IPFW opt_netgraph.h
1999-11-16 23:49:07 +00:00
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
2000-11-16 16:59:26 +00:00
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
2004-04-24 22:03:02 +00:00
NETGRAPH_SPPP opt_netgraph.h
NETGRAPH_TAG opt_netgraph.h
2005-06-10 08:05:13 +00:00
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
TI_SF_BUF_JUMBO opt_ti.h
At long last, commit the zero copy sockets code. MAKEDEV: Add MAKEDEV glue for the ti(4) device nodes. ti.4: Update the ti(4) man page to include information on the TI_JUMBO_HDRSPLIT and TI_PRIVATE_JUMBOS kernel options, and also include information about the new character device interface and the associated ioctls. man9/Makefile: Add jumbo.9 and zero_copy.9 man pages and associated links. jumbo.9: New man page describing the jumbo buffer allocator interface and operation. zero_copy.9: New man page describing the general characteristics of the zero copy send and receive code, and what an application author should do to take advantage of the zero copy functionality. NOTES: Add entries for ZERO_COPY_SOCKETS, TI_PRIVATE_JUMBOS, TI_JUMBO_HDRSPLIT, MSIZE, and MCLSHIFT. conf/files: Add uipc_jumbo.c and uipc_cow.c. conf/options: Add the 5 options mentioned above. kern_subr.c: Receive side zero copy implementation. This takes "disposable" pages attached to an mbuf, gives them to a user process, and then recycles the user's page. This is only active when ZERO_COPY_SOCKETS is turned on and the kern.ipc.zero_copy.receive sysctl variable is set to 1. uipc_cow.c: Send side zero copy functions. Takes a page written by the user and maps it copy on write and assigns it kernel virtual address space. Removes copy on write mapping once the buffer has been freed by the network stack. uipc_jumbo.c: Jumbo disposable page allocator code. This allocates (optionally) disposable pages for network drivers that want to give the user the option of doing zero copy receive. uipc_socket.c: Add kern.ipc.zero_copy.{send,receive} sysctls that are enabled if ZERO_COPY_SOCKETS is turned on. Add zero copy send support to sosend() -- pages get mapped into the kernel instead of getting copied if they meet size and alignment restrictions. uipc_syscalls.c:Un-staticize some of the sf* functions so that they can be used elsewhere. (uipc_cow.c) if_media.c: In the SIOCGIFMEDIA ioctl in ifmedia_ioctl(), avoid calling malloc() with M_WAITOK. Return an error if the M_NOWAIT malloc fails. The ti(4) driver and the wi(4) driver, at least, call this with a mutex held. This causes witness warnings for 'ifconfig -a' with a wi(4) or ti(4) board in the system. (I've only verified for ti(4)). ip_output.c: Fragment large datagrams so that each segment contains a multiple of PAGE_SIZE amount of data plus headers. This allows the receiver to potentially do page flipping on receives. if_ti.c: Add zero copy receive support to the ti(4) driver. If TI_PRIVATE_JUMBOS is not defined, it now uses the jumbo(9) buffer allocator for jumbo receive buffers. Add a new character device interface for the ti(4) driver for the new debugging interface. This allows (a patched version of) gdb to talk to the Tigon board and debug the firmware. There are also a few additional debugging ioctls available through this interface. Add header splitting support to the ti(4) driver. Tweak some of the default interrupt coalescing parameters to more useful defaults. Add hooks for supporting transmit flow control, but leave it turned off with a comment describing why it is turned off. if_tireg.h: Change the firmware rev to 12.4.11, since we're really at 12.4.11 plus fixes from 12.4.13. Add defines needed for debugging. Remove the ti_stats structure, it is now defined in sys/tiio.h. ti_fw.h: 12.4.11 firmware. ti_fw2.h: 12.4.11 firmware, plus selected fixes from 12.4.13, and my header splitting patches. Revision 12.4.13 doesn't handle 10/100 negotiation properly. (This firmware is the same as what was in the tree previously, with the addition of header splitting support.) sys/jumbo.h: Jumbo buffer allocator interface. sys/mbuf.h: Add a new external mbuf type, EXT_DISPOSABLE, to indicate that the payload buffer can be thrown away / flipped to a userland process. socketvar.h: Add prototype for socow_setup. tiio.h: ioctl interface to the character portion of the ti(4) driver, plus associated structure/type definitions. uio.h: Change prototype for uiomoveco() so that we'll know whether the source page is disposable. ufs_readwrite.c:Update for new prototype of uiomoveco(). vm_fault.c: In vm_fault(), check to see whether we need to do a page based copy on write fault. vm_object.c: Add a new function, vm_object_allocate_wait(). This does the same thing that vm_object allocate does, except that it gives the caller the opportunity to specify whether it should wait on the uma_zalloc() of the object structre. This allows vm objects to be allocated while holding a mutex. (Without generating WITNESS warnings.) vm_object_allocate() is implemented as a call to vm_object_allocate_wait() with the malloc flag set to M_WAITOK. vm_object.h: Add prototype for vm_object_allocate_wait(). vm_page.c: Add page-based copy on write setup, clear and fault routines. vm_page.h: Add page based COW function prototypes and variable in the vm_page structure. Many thanks to Drew Gallatin, who wrote the zero copy send and receive code, and to all the other folks who have tested and reviewed this code over the years.
2002-06-26 03:37:47 +00:00
TI_JUMBO_HDRSPLIT opt_ti.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_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
1999-01-23 17:07:49 +00:00
PLIP_DEBUG opt_plip.h
LOCKF_DEBUG opt_debug_lockf.h
SI_DEBUG opt_debug_si.h
IFMEDIA_DEBUG opt_ifmedia.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
MAXCPU opt_global.h
MAXMEMDOM opt_global.h
MAXPHYS opt_global.h
MCLSHIFT opt_global.h
2004-02-25 09:35:35 +00:00
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
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_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
2000-10-17 07:59:56 +00:00
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
# Options for uart(4)
UART_PPS_ON_CTS opt_uart.h
UART_POLL_FREQ opt_uart.h
1998-10-28 08:37:10 +00:00
# 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_TEMPLATE opt_usb.h
USB_VERBOSE opt_usb.h
USB_DMA_SINGLE_ALLOC opt_usb.h
USB_EHCI_BIG_ENDIAN_DESC opt_usb.h
2008-10-24 07:16:13 +00:00
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
1998-12-28 16:31:26 +00:00
# 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
2002-09-22 07:14:27 +00:00
KTR_ALQ opt_ktr.h
KTR_MASK opt_ktr.h
KTR_CPUMASK opt_ktr.h
KTR_COMPILE opt_global.h
KTR_BOOT_ENTRIES opt_global.h
KTR_ENTRIES opt_global.h
KTR_VERBOSE opt_ktr.h
WITNESS opt_global.h
WITNESS_KDB opt_witness.h
WITNESS_NO_VNODE opt_witness.h
WITNESS_SKIPSPIN opt_witness.h
2014-08-03 05:00:43 +00:00
WITNESS_COUNT opt_witness.h
OPENSOLARIS_WITNESS opt_global.h
# options for ACPI support
ACPI_DEBUG opt_acpi.h
ACPI_MAX_TASKS opt_acpi.h
ACPI_MAX_THREADS opt_acpi.h
Import the driver for VT-d DMAR hardware, as specified in the revision 1.3 of Intelб╝ Virtualization Technology for Directed I/O Architecture Specification. The Extended Context and PASIDs from the rev. 2.2 are not supported, but I am not aware of any released hardware which implements them. Code does not use queued invalidation, see comments for the reason, and does not provide interrupt remapping services. Code implements the management of the guest address space per domain and allows to establish and tear down arbitrary mappings, but not partial unmapping. The superpages are created as needed, but not promoted. Faults are recorded, fault records could be obtained programmatically, and printed on the console. Implement the busdma(9) using DMARs. This busdma backend avoids bouncing and provides security against misbehaving hardware and driver bad programming, preventing leaks and corruption of the memory by wild DMA accesses. By default, the implementation is compiled into amd64 GENERIC kernel but disabled; to enable, set hw.dmar.enable=1 loader tunable. Code is written to work on i386, but testing there was low priority, and driver is not enabled in GENERIC. Even with the DMAR turned on, individual devices could be directed to use the bounce busdma with the hw.busdma.pci<domain>:<bus>:<device>:<function>.bounce=1 tunable. If DMARs are capable of the pass-through translations, it is used, otherwise, an identity-mapping page table is constructed. The driver was tested on Xeon 5400/5500 chipset legacy machine, Haswell desktop and E5 SandyBridge dual-socket boxes, with ahci(4), ata(4), bce(4), ehci(4), mfi(4), uhci(4), xhci(4) devices. It also works with em(4) and igb(4), but there some fixes are needed for drivers, which are not committed yet. Intel GPUs do not work with DMAR (yet). Many thanks to John Baldwin, who explained me the newbus integration; Peter Holm, who did all testing and helped me to discover and understand several incredible bugs; and to Jim Harris for the access to the EDS and BWG and for listening when I have to explain my findings to somebody. Sponsored by: The FreeBSD Foundation MFC after: 1 month
2013-10-28 13:33:29 +00:00
ACPI_DMAR opt_acpi.h
DEV_ACPI opt_acpi.h
# ISA support
DEV_ISA opt_isa.h
ISAPNP opt_isa.h
2001-01-29 09:43:36 +00:00
# various 'device presence' options.
2004-02-25 09:35:35 +00:00
DEV_BPF opt_bpf.h
DEV_CARP opt_carp.h
DEV_ENC opt_enc.h
DEV_MCA opt_mca.h
DEV_NETMAP opt_global.h
DEV_PCI opt_pci.h
DEV_PF opt_pf.h
DEV_PFLOG opt_pf.h
DEV_PFSYNC opt_pf.h
DEV_SPLASH opt_splash.h
DEV_VLAN opt_vlan.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
2006-04-10 20:04:22 +00:00
# bce driver
BCE_DEBUG opt_bce.h
BCE_NVRAM_WRITE_SUPPORT opt_bce.h
2006-04-10 20:04:22 +00:00
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/vt 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
2004-02-25 09:35:35 +00:00
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
VT_ALT_TO_ESC_HACK opt_syscons.h
VT_FB_DEFAULT_WIDTH opt_syscons.h
VT_FB_DEFAULT_HEIGHT opt_syscons.h
VT_MAXWINDOWS opt_syscons.h
VT_TWOBUTTON_MOUSE opt_syscons.h
DEV_SC opt_syscons.h
DEV_VT opt_syscons.h
# teken terminal emulator options
TEKEN_CONS25 opt_teken.h
TEKEN_UTF8 opt_teken.h
TERMINAL_KERN_ATTR opt_teken.h
TERMINAL_NORM_ATTR 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
2003-06-25 14:51:20 +00:00
# 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_ath.h
ATH_ENABLE_DFS opt_ath.h
ATH_EEPROM_FIRMWARE opt_ath.h
ATH_ENABLE_RADIOTAP_VENDOR_EXT opt_ath.h
ATH_DEBUG_ALQ opt_ath.h
ATH_KTR_INTR_DEBUG opt_ath.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.
2011-04-29 18:26:17 +00:00
AH_SUPPORT_AR9130 opt_ah.h
# This is required for AR933x SoC support
AH_SUPPORT_AR9330 opt_ah.h
AH_SUPPORT_AR9340 opt_ah.h
AH_SUPPORT_QCA9550 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
Overhaul regulatory support: o remove HAL_CHANNEL; convert the hal to use net80211 channels; this mostly involves mechanical changes to variable names and channel attribute macros o gut HAL_CHANNEL_PRIVATE as most of the contents are now redundant with the net80211 channel available o change api for ath_hal_init_channels: no more reglass id's, no more outdoor indication (was a noop), anM contents o add ath_hal_getchannels to have the hal construct a channel list without altering runtime state; this is used to retrieve the calibration list for the device in ath_getradiocaps o add ath_hal_set_channels to take a channel list and regulatory data from above and construct internal state to match (maps frequencies for 900MHz cards, setup for CTL lookups, etc) o compact the private channel table: we keep one private channel per frequency instead of one per HAL_CHANNEL; this gives a big space savings and potentially improves ani and calibration by sharing state (to be seen; didn't see anything in testing); a new config option AH_MAXCHAN controls the table size (default to 96 which was chosen to be ~3x the largest expected size) o shrink ani state and change to mirror private channel table (one entry per frequency indexed by ic_devdata) o move ani state flags to private channel state o remove country codes; use net80211 definitions instead o remove GSM regulatory support; it's no longer needed now that we pass in channel lists from above o consolidate ADHOC_NO_11A attribute with DISALLOW_ADHOC_11A o simplify initial channel list construction based on the EEPROM contents; we preserve country code support for now but may want to just fallback to a WWR sku and dispatch the discovered country code up to user space so the channel list can be constructed using the master regdomain tables o defer to net80211 for max antenna gain o eliminate sorting of internal channel table; now that we use ic_devdata as an index, table lookups are O(1) o remove internal copy of the country code; the public one is sufficient o remove AH_SUPPORT_11D conditional compilation; we always support 11d o remove ath_hal_ispublicsafetysku; not needed any more o remove ath_hal_isgsmsku; no more GSM stuff o move Conformance Test Limit (CTL) state from private channel to a lookup using per-band pointers cached in the private state block o remove regulatory class id support; was unused and belongs in net80211 o fix channel list construction to set IEEE80211_CHAN_NOADHOC, IEEE80211_CHAN_NOHOSTAP, and IEEE80211_CHAN_4MSXMIT o remove private channel flags CHANNEL_DFS and CHANNEL_4MS_LIMIT; these are now set in the constructed net80211 channel o store CHANNEL_NFCREQUIRED (Noise Floor Required) channel attribute in one of the driver-private flag bits of the net80211 channel o move 900MHz frequency mapping into the hal; the mapped frequency is stored in the private channel and used throughout the hal (no more mapping in the driver and/or net80211) o remove ath_hal_mhz2ieee; it's no longer needed as net80211 does the calculation and available in the net80211 channel o change noise floor calibration logic to work with compacted private channel table setup; this may require revisiting as we no longer can distinguish channel attributes (e.g. 11b vs 11g vs turbo) but since the data is used only to calculate status data we can live with it for now o change ah_getChipPowerLimits internal method to operate on a single channel instead of all channels in the private channel table o add ath_hal_gethwchannel to map a net80211 channel to a h/w frequency (always the same except for 900MHz channels) o add HAL_EEBADREG and HAL_EEBADCC status codes to better identify regulatory problems o remove CTRY_DEBUG and CTRY_DEFAULT enum's; these come from net80211 now o change ath_hal_getwirelessmodes to really return wireless modes supported by the hardware (was previously applying regulatory constraints) o return channel interference status with IEEE80211_CHANSTATE_CWINT (should change to a callback so hal api's can take const pointers) o remove some #define's no longer needed with the inclusion of <net80211/_ieee80211.h> Sponsored by: Carlson Wireless
2009-01-28 18:00:22 +00:00
AH_MAXCHAN opt_ah.h
AH_RXCFG_SDMAMW_4BYTES opt_ah.h
AH_INTERRUPT_DEBUGGING 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
2013-08-01 21:50:13 +00:00
# Options for the Intel 802.11n wireless driver
IWN_DEBUG opt_iwn.h
# Options for the Intel 3945ABG wireless driver
WPI_DEBUG opt_wpi.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_DEBUG opt_global.h
HWPMC_HOOKS
HWPMC_MIPS_BACKTRACE opt_hwpmc_hooks.h
2005-12-12 01:14:59 +00:00
# XBOX options for FreeBSD/i386, but some files are MI
XBOX opt_xbox.h
# 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
Implementation of the upcoming Wireless Mesh standard, 802.11s, on the net80211 wireless stack. This work is based on the March 2009 D3.0 draft standard. This standard is expected to become final next year. This includes two main net80211 modules, ieee80211_mesh.c which deals with peer link management, link metric calculation, routing table control and mesh configuration and ieee80211_hwmp.c which deals with the actually routing process on the mesh network. HWMP is the mandatory routing protocol on by the mesh standard, but others, such as RA-OLSR, can be implemented. Authentication and encryption are not implemented. There are several scripts under tools/tools/net80211/scripts that can be used to test different mesh network topologies and they also teach you how to setup a mesh vap (for the impatient: ifconfig wlan0 create wlandev ... wlanmode mesh). A new build option is available: IEEE80211_SUPPORT_MESH and it's enabled by default on GENERIC kernels for i386, amd64, sparc64 and pc98. Drivers that support mesh networks right now are: ath, ral and mwl. More information at: http://wiki.freebsd.org/WifiMesh Please note that this work is experimental. Also, please note that bridging a mesh vap with another network interface is not yet supported. Many thanks to the FreeBSD Foundation for sponsoring this project and to Sam Leffler for his support. Also, I would like to thank Gateworks Corporation for sending me a Cambria board which was used during the development of this project. Reviewed by: sam Approved by: re (kensmith) Obtained from: projects/mesh11s
2009-07-11 15:02:45 +00:00
IEEE80211_SUPPORT_MESH opt_wlan.h
IEEE80211_SUPPORT_SUPERG opt_wlan.h
IEEE80211_SUPPORT_TDMA opt_wlan.h
IEEE80211_ALQ opt_wlan.h
IEEE80211_DFS_DEBUG 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
2009-05-01 17:18:45 +00:00
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
# VideoMode
PICKMODE_DEBUG opt_videomode.h
# Network stack virtualization options
2008-08-24 21:33:10 +00:00
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 Mega-commit. Expect further cleanup until code freeze. For a slightly thorough explaination, please refer to [1] http://people.freebsd.org/~ariff/SOUND_4.TXT.html . Summary of changes includes: 1 Volume Per-Channel (vpc). Provides private / standalone volume control unique per-stream pcm channel without touching master volume / pcm. Applications can directly use SNDCTL_DSP_[GET|SET][PLAY|REC]VOL, or for backwards compatibility, SOUND_MIXER_PCM through the opened dsp device instead of /dev/mixer. Special "bypass" mode is enabled through /dev/mixer which will automatically detect if the adjustment is made through /dev/mixer and forward its request to this private volume controller. Changes to this volume object will not interfere with other channels. Requirements: - SNDCTL_DSP_[GET|SET][PLAY|REC]_VOL are newer ioctls (OSSv4) which require specific application modifications (preferred). - No modifications required for using bypass mode, so applications like mplayer or xmms should work out of the box. Kernel hints: - hint.pcm.%d.vpc (0 = disable vpc). Kernel sysctls: - hw.snd.vpc_mixer_bypass (default: 1). Enable or disable /dev/mixer bypass mode. - hw.snd.vpc_autoreset (default: 1). By default, closing/opening /dev/dsp will reset the volume back to 0 db gain/attenuation. Setting this to 0 will preserve its settings across device closing/opening. - hw.snd.vpc_reset (default: 0). Panic/reset button to reset all volume settings back to 0 db. - hw.snd.vpc_0db (default: 45). 0 db relative to linear mixer value. 2 High quality fixed-point Bandlimited SINC sampling rate converter, based on Julius O'Smith's Digital Audio Resampling - http://ccrma.stanford.edu/~jos/resample/. It includes a filter design script written in awk (the clumsiest joke I've ever written) - 100% 32bit fixed-point, 64bit accumulator. - Possibly among the fastest (if not fastest) of its kind. - Resampling quality is tunable, either runtime or during kernel compilation (FEEDER_RATE_PRESETS). - Quality can be further customized during kernel compilation by defining FEEDER_RATE_PRESETS in /etc/make.conf. Kernel sysctls: - hw.snd.feeder_rate_quality. 0 - Zero-order Hold (ZOH). Fastest, bad quality. 1 - Linear Interpolation (LINEAR). Slightly slower than ZOH, better quality but still does not eliminate aliasing. 2 - (and above) - Sinc Interpolation(SINC). Best quality. SINC quality always start from 2 and above. Rough quality comparisons: - http://people.freebsd.org/~ariff/z_comparison/ 3 Bit-perfect mode. Bypasses all feeder/dsp effects. Pure sound will be directly fed into the hardware. 4 Parametric (compile time) Software Equalizer (Bass/Treble mixer). Can be customized by defining FEEDER_EQ_PRESETS in /etc/make.conf. 5 Transparent/Adaptive Virtual Channel. Now you don't have to disable vchans in order to make digital format pass through. It also makes vchans more dynamic by choosing a better format/rate among all the concurrent streams, which means that dev.pcm.X.play.vchanformat/rate becomes sort of optional. 6 Exclusive Stream, with special open() mode O_EXCL. This will "mute" other concurrent vchan streams and only allow a single channel with O_EXCL set to keep producing sound. Other Changes: * most feeder_* stuffs are compilable in userland. Let's not speculate whether we should go all out for it (save that for FreeBSD 16.0-RELEASE). * kobj signature fixups, thanks to Andriy Gapon <avg@freebsd.org> * pull out channel mixing logic out of vchan.c and create its own feeder_mixer for world justice. * various refactoring here and there, for good or bad. * activation of few more OSSv4 ioctls() (see [1] above). * opt_snd.h for possible compile time configuration: (mostly for debugging purposes, don't try these at home) SND_DEBUG SND_DIAGNOSTIC SND_FEEDER_MULTIFORMAT SND_FEEDER_FULL_MULTIFORMAT SND_FEEDER_RATE_HP SND_PCM_64 SND_OLDSTEREO Manual page updates are on the way. Tested by: joel, Olivier SMEDTS <olivier at gid0 d org>, too many unsung / unnamed heroes.
2009-06-07 19:12:08 +00:00
# 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 opt_ofed.h
IPOIB_DEBUG opt_ofed.h
IPOIB_CM opt_ofed.h
# Resource Accounting
RACCT opt_global.h
RACCT_DEFAULT_TO_DISABLED opt_global.h
# Resource Limits
RCTL opt_global.h
# Random number generator(s)
Huge cleanup of random(4) code. * GENERAL - Update copyright. - Make kernel options for RANDOM_YARROW and RANDOM_DUMMY. Set neither to ON, which means we want Fortuna - If there is no 'device random' in the kernel, there will be NO random(4) device in the kernel, and the KERN_ARND sysctl will return nothing. With RANDOM_DUMMY there will be a random(4) that always blocks. - Repair kern.arandom (KERN_ARND sysctl). The old version went through arc4random(9) and was a bit weird. - Adjust arc4random stirring a bit - the existing code looks a little suspect. - Fix the nasty pre- and post-read overloading by providing explictit functions to do these tasks. - Redo read_random(9) so as to duplicate random(4)'s read internals. This makes it a first-class citizen rather than a hack. - Move stuff out of locked regions when it does not need to be there. - Trim RANDOM_DEBUG printfs. Some are excess to requirement, some behind boot verbose. - Use SYSINIT to sequence the startup. - Fix init/deinit sysctl stuff. - Make relevant sysctls also tunables. - Add different harvesting "styles" to allow for different requirements (direct, queue, fast). - Add harvesting of FFS atime events. This needs to be checked for weighing down the FS code. - Add harvesting of slab allocator events. This needs to be checked for weighing down the allocator code. - Fix the random(9) manpage. - Loadable modules are not present for now. These will be re-engineered when the dust settles. - Use macros for locks. - Fix comments. * src/share/man/... - Update the man pages. * src/etc/... - The startup/shutdown work is done in D2924. * src/UPDATING - Add UPDATING announcement. * src/sys/dev/random/build.sh - Add copyright. - Add libz for unit tests. * src/sys/dev/random/dummy.c - Remove; no longer needed. Functionality incorporated into randomdev.*. * live_entropy_sources.c live_entropy_sources.h - Remove; content moved. - move content to randomdev.[ch] and optimise. * src/sys/dev/random/random_adaptors.c src/sys/dev/random/random_adaptors.h - Remove; plugability is no longer used. Compile-time algorithm selection is the way to go. * src/sys/dev/random/random_harvestq.c src/sys/dev/random/random_harvestq.h - Add early (re)boot-time randomness caching. * src/sys/dev/random/randomdev_soft.c src/sys/dev/random/randomdev_soft.h - Remove; no longer needed. * src/sys/dev/random/uint128.h - Provide a fake uint128_t; if a real one ever arrived, we can use that instead. All that is needed here is N=0, N++, N==0, and some localised trickery is used to manufacture a 128-bit 0ULLL. * src/sys/dev/random/unit_test.c src/sys/dev/random/unit_test.h - Improve unit tests; previously the testing human needed clairvoyance; now the test will do a basic check of compressibility. Clairvoyant talent is still a good idea. - This is still a long way off a proper unit test. * src/sys/dev/random/fortuna.c src/sys/dev/random/fortuna.h - Improve messy union to just uint128_t. - Remove unneeded 'static struct fortuna_start_cache'. - Tighten up up arithmetic. - Provide a method to allow eternal junk to be introduced; harden it against blatant by compress/hashing. - Assert that locks are held correctly. - Fix the nasty pre- and post-read overloading by providing explictit functions to do these tasks. - Turn into self-sufficient module (no longer requires randomdev_soft.[ch]) * src/sys/dev/random/yarrow.c src/sys/dev/random/yarrow.h - Improve messy union to just uint128_t. - Remove unneeded 'staic struct start_cache'. - Tighten up up arithmetic. - Provide a method to allow eternal junk to be introduced; harden it against blatant by compress/hashing. - Assert that locks are held correctly. - Fix the nasty pre- and post-read overloading by providing explictit functions to do these tasks. - Turn into self-sufficient module (no longer requires randomdev_soft.[ch]) - Fix some magic numbers elsewhere used as FAST and SLOW. Differential Revision: https://reviews.freebsd.org/D2025 Reviewed by: vsevolod,delphij,rwatson,trasz,jmg Approved by: so (delphij)
2015-06-30 17:00:45 +00:00
# The DEBUG option is in global.h as the random harvesting
# puts probes all over the place, and it makes little sense
# to pollute these headers with an extra include.
# the DUMMY option is in global.h because it is used to
# turn off harvesting all over the kernel.
RANDOM_DEBUG opt_global.h
# Which CSPRNG hashes we get.
# These are mutually exclusive. With neither, Fortuna is selected.
RANDOM_DUMMY opt_global.h
RANDOM_YARROW opt_random.h
Change EM_MULTIQUEUE to a real kernconf entry and enable support for up to 2 rx/tx queues for the 82574. Program the 82574 to enable 5 msix vectors, assign 1 to each rx queue, 1 to each tx queue and 1 to the link handler. Inspired by DragonFlyBSD, enable some RSS logic for handling tx queue handling/processing. Move multiqueue handler functions so that they line up better in a diff review to if_igb.c Always enqueue tx work to be done in em_mq_start, if unable to acquire the TX lock, then this will be processed in the background later by the taskqueue. Remove mbuf argument from em_start_mq_locked() as the work is always enqueued. (stolen from igb) Setup TARC, TXDCTL and RXDCTL registers for better performance and stability in multiqueue and singlequeue implementations. Handle Intel errata 3 and generic multiqueue behavior with the initialization of TARC(0) and TARC(1) Bind interrupt threads to cpus in order. (stolen from igb) Add 2 new DDB functions, one to display the queue(s) and their settings and one to reset the adapter. Primarily used for debugging. In the multiqueue configuration, bump RXD and TXD ring size to max for the adapter (4096). Setup an RDTR of 64 and an RADV of 128 in multiqueue configuration to cut down on the number of interrupts. RADV was arbitrarily set to 2x RDTR and can be adjusted as needed. Cleanup the display in top a bit to make it clearer where the taskqueue threads are running and what they should be doing. Ensure that both queues are processed by em_local_timer() by writing them both to the IMS register to generate soft interrupts. Ensure that an soft interrupt is generated when em_msix_link() is run so that any races between assertion of the link/status interrupt and a rx/tx interrupt are handled. Document existing tuneables: hw.em.eee_setting, hw.em.msix, hw.em.smart_pwr_down, hw.em.sbp Document use of hw.em.num_queues and the new kernel option EM_MULTIQUEUE Thanks to Intel for their continued support of FreeBSD. Reviewed by: erj jfv hiren gnn wblock Obtained from: Intel Corporation MFC after: 2 weeks Relnotes: Yes Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D1994
2015-06-03 18:01:09 +00:00
# Intel em(4) driver
EM_MULTIQUEUE opt_em.h