freebsd-dev/sys/mips/conf/std.AR5315
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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#
# AR5315 -- Kernel configuration file for FreeBSD/MIPS for Atheros 5315 systems
#
# This includes all the common drivers for the AR5315 boards
#
# $FreeBSD$
#
machine mips mips
#ident AR5315_BASE
cpu CPU_MIPS4KC
makeoptions KERNLOADADDR=0x80050000
options HZ=1000
makeoptions MODULES_OVERRIDE=""
files "../atheros/ar531x/files.ar5315"
options INTRNG
# For now, hints are per-board.
hints "AR5315_BASE.hints"
makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
# For small memory footprints
options VM_KMEM_SIZE_SCALE=1
options DDB
options KDB
options SCHED_4BSD #4BSD scheduler
options INET #InterNETworking
options INET6 # IPv6
options TCP_HHOOK # hhook(9) framework for TCP
# options NFSCL #Network Filesystem Client
options PSEUDOFS #Pseudo-filesystem framework
options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
# options NFS_LEGACYRPC
# Debugging for use in -current
options INVARIANTS
options INVARIANT_SUPPORT
options WITNESS
options WITNESS_SKIPSPIN
options DEBUG_REDZONE
options DEBUG_MEMGUARD
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 MSDOSFS # Read MSDOS filesystems; useful for USB/CF
device mii
device are
device ar5315_spi
device spibus
device mx25l
device geom_redboot
device ar5315_wdog
device uart
device uart_ar5315
device loop
device ether
device md
device bpf
device random
options ARGE_DEBUG # Enable if_arge debugging for now
# Enable GPIO
device gpio
device gpioled