freebsd-dev/sys/arm/conf/EXYNOS5.common
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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#
# Kernel configuration for Samsung Exynos 5 SoC.
#
# For more information on this file, please read the config(5) manual page,
# and/or 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.
#
# $FreeBSD$
makeoptions WERROR="-Werror"
include "std.armv6"
options SCHED_ULE # ULE scheduler
options PREEMPTION # Enable kernel thread preemption
options INET # InterNETworking
options INET6 # IPv6 communications protocols
options TCP_HHOOK # hhook(9) framework for TCP
options SCTP # Stream Control Transmission Protocol
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 UFS_GJOURNAL # Enable gjournal-based UFS journaling
options QUOTA # Enable disk quotas for UFS
options NFSCL # Network Filesystem Client
options NFSLOCKD # Network Lock Manager
options NFS_ROOT # NFS usable as /, requires NFSCL
options MSDOSFS # MSDOS Filesystem
options CD9660 # ISO 9660 Filesystem
options PROCFS # Process filesystem (requires PSEUDOFS)
options PSEUDOFS # Pseudo-filesystem framework
options TMPFS # Efficient memory filesystem
options GEOM_PART_GPT # GUID Partition Tables
options GEOM_PART_BSD # BSD partition scheme
options GEOM_PART_MBR # MBR partition scheme
options COMPAT_43 # Compatible with BSD 4.3 [KEEP THIS!]
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 KBD_INSTALL_CDEV # install a CDEV entry in /dev
options FREEBSD_BOOT_LOADER # Process metadata passed from loader(8)
options VFP # Enable floating point hardware support
options SMP # Enable multiple cores
# NFS root from boopt/dhcp
#options BOOTP
#options BOOTP_NFSROOT
#options BOOTP_COMPAT
#options BOOTP_NFSV3
#options BOOTP_WIRED_TO=ue0
options ROOTDEVNAME=\"ufs:/dev/da0\"
# MMC/SD/SDIO Card slot support
device mmc # mmc/sd bus
device mmcsd # mmc/sd flash cards
device dwmmc
# Interrupt controller
device gic
options INTRNG
# ARM Generic Timer
device generic_timer
# Pseudo devices
device loop
device random
device pty
device md
device gpio
# USB support
options USB_HOST_ALIGN=64 # Align usb buffers to cache line size.
device usb
#device musb
device ehci
#device ohci
device xhci
device umass
device scbus # SCSI bus (required for ATA/SCSI)
device da # Direct Access (disks)
device pass
# SATA
#device ata
#device atadisk
#device mvs
# Serial ports
device uart
# I2C (TWSI)
device iic
device iicbus
# SPI
device spibus
device exynos_spi
# Ethernet
device ether
device mii
device smsc
device smscphy
# USB ethernet support, requires miibus
device miibus
device axe # ASIX Electronics USB Ethernet
device bpf # Berkeley packet filter