freebsd-dev/sys/arm/conf/NSLU
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

108 lines
3.4 KiB
Plaintext

# NSLU - kernel configuration file for FreeBSD/arm on Linksys NSLU2
#
# 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.
#
# $FreeBSD$
#NO_UNIVERSE
ident NSLU
include "std.arm"
# XXX What is defined in std.avila does not exactly match the following:
#options PHYSADDR=0x10000000
#options KERNVIRTADDR=0xc0200000 # Used in ldscript.arm
#options FLASHADDR=0x50000000
#options LOADERRAMADDR=0x00000000
include "../xscale/ixp425/std.ixp425"
# NB: memory mapping is defined in std.avila (see also comment above)
include "../xscale/ixp425/std.avila"
options XSCALE_CACHE_READ_WRITE_ALLOCATE
#To statically compile in device wiring instead of /boot/device.hints
hints "NSLU.hints" # Default places to look for devices.
makeoptions MODULES_OVERRIDE=""
makeoptions CONF_CFLAGS=-mcpu=xscale
options HZ=100
options DEVICE_POLLING
options SCHED_ULE # ULE scheduler
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 GEOM_PART_BSD # BSD partition scheme
options GEOM_PART_MBR # MBR partition scheme
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
# I2C Bus
device iicbus
device iicbb
device iic
device ixpiic # I2C bus glue
device ixpwdog # watchdog timer
device npe # Network Processing Engine
device npe_fw
device firmware
device qmgr # Q Manager (required by npe)
device mii # Minimal mii routines
device rlphy # NSLU2 uses Realtek PHY attached to npe
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)