freebsd-dev/sys/arm/conf/CNS11XXNAS
Jonathan T. Looney bd79708dbf In the TCP stack, the hhook(9) framework provides hooks for kernel modules
to add actions that run when a TCP frame is sent or received on a TCP
session in the ESTABLISHED state. In the base tree, this functionality is
only used for the h_ertt module, which is used by the cc_cdg, cc_chd, cc_hd,
and cc_vegas congestion control modules.

Presently, we incur overhead to check for hooks each time a TCP frame is
sent or received on an ESTABLISHED TCP session.

This change adds a new compile-time option (TCP_HHOOK) to determine whether
to include the hhook(9) framework for TCP. To retain backwards
compatibility, I added the TCP_HHOOK option to every configuration file that
already defined "options INET". (Therefore, this patch introduces no
functional change. In order to see a functional difference, you need to
compile a custom kernel without the TCP_HHOOK option.) This change will
allow users to easily exclude this functionality from their kernel, should
they wish to do so.

Note that any users who use a custom kernel configuration and use one of the
congestion control modules listed above will need to add the TCP_HHOOK
option to their kernel configuration.

Reviewed by:	rrs, lstewart, hiren (previous version), sjg (makefiles only)
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D8185
2016-10-12 02:16:42 +00:00

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# CNS11XXNAS - StarSemi STR9104/Cavium CNS1102 NAS
# kernel configuration file for FreeBSD/arm
#
# For more information on this file, please read the handbook section on
# Kernel Configuration Files:
#
# http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
#
# The handbook is also available locally in /usr/share/doc/handbook
# if you've installed the doc distribution, otherwise always see the
# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
# latest information.
#
# An exhaustive list of options and more detailed explanations of the
# device lines is also present in the ../../conf/NOTES and NOTES files.
# If you are in doubt as to the purpose or necessity of a line, check first
# in NOTES.
#
# $FreeBSD$
ident CNS11XXNAS
include "std.arm"
#options PHYSADDR=0x10000000
#options KERNVIRTADDR=0xc0200000 # Used in ldscript.arm
#options FLASHADDR=0x50000000
#options LOADERRAMADDR=0x00000000
include "../cavium/cns11xx/std.econa"
makeoptions MODULES_OVERRIDE=""
options HZ=100
options DEVICE_POLLING
options SCHED_ULE # ULE scheduler
#options SCHED_4BSD # 4BSD scheduler
options GEOM_PART_BSD # BSD partition scheme
options GEOM_PART_MBR # MBR partition scheme
options GEOM_PART_GPT # GUID Partition Tables.
#options GEOM_PART_EBR
#options GEOM_PART_EBR_COMPAT
options GEOM_LABEL # Provides labelization
options INET # InterNETworking
options INET6 # IPv6 communications protocols
options TCP_HHOOK # hhook(9) framework for TCP
options FFS # Berkeley Fast Filesystem
options SOFTUPDATES # Enable FFS soft updates support
options UFS_ACL # Support for access control lists
options UFS_DIRHASH # Improve performance on big directories
options NFSCL # Network Filesystem Client
#options NFSD # Network Filesystem Server
#options NFSLOCKD # Network Lock Manager
options NFS_ROOT # NFS usable as /, requires NFSCL
options TMPFS # Efficient memory filesystem
options MSDOSFS # MSDOS Filesystem
#options CD9660 # ISO 9660 Filesystem
#options PROCFS # Process filesystem (requires PSEUDOFS)
options PSEUDOFS # Pseudo-filesystem framework
options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
options KTRACE # ktrace(1) support
options SYSVSHM # SYSV-style shared memory
options SYSVMSG # SYSV-style message queues
options SYSVSEM # SYSV-style semaphores
options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
options MUTEX_NOINLINE # Mutex inlines are space hogs
options RWLOCK_NOINLINE # rwlock inlines are space hogs
options SX_NOINLINE # sx inliens are space hogs
#options BOOTP
#options BOOTP_NFSROOT
#options BOOTP_NFSV3
#options BOOTP_WIRED_TO=npe0
#options BOOTP_COMPAT
#device pci
device uart
device firmware
device mii # Minimal mii routines
device ether
device bpf
device loop
device md
device random # Entropy device
device usb
device ohci
device ehci
device umass
device scbus # SCSI bus (required for ATA/SCSI)
device da # Direct Access (disks)
device pass
device cfi
#device udav # Davicom DM9601E USB
device geom_label
device geom_journal
device geom_part_bsd
options ROOTDEVNAME=\"ufs:da0s1a\"