freebsd-skq/sys/mips/conf/PB92
jtl 62030781cd 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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#
# PB92 -- Kernel configuration file for FreeBSD/mips for Atheros PB92 reference
# board (AR7242)
#
# $FreeBSD$
#
ident PB92
# XXX The default load address in the Uboot environment is 0x80010000
makeoptions KERNLOADADDR=0x80050000
options HZ=1000
# The PB92 has 32mb of RAM; hard-code that
options AR71XX_REALMEM=32*1024*1024
# It's UBOOT, not Redboot - without this, things will hang at startup
options AR71XX_ENV_UBOOT
# We have to build most things as modules rather than in the kernel.
# The PB92 has 4MB of SPI flash and the default kernel "partition"
# is only 892KiB. In order to try and squeeze into that (so people
# who already are using it without modifying the default flash layout)
# we need to cut down on a lot of things.
makeoptions MODULES_OVERRIDE="ath ath_pci ath_ahb bridgestp if_bridge if_gif if_gre wlan wlan_acl wlan_amrr wlan_ccmp wlan_rssadapt wlan_tkip wlan_wep wlan_xauth usb ar71xx"
hints "PB92.hints"
include "../atheros/std.ar71xx"
makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
makeoptions MODULES_OVERRIDE=""
options DDB
options KDB
options SCHED_4BSD #4BSD scheduler
options INET #InterNETworking
# Can't do IPv6 - it just doesn't fit.
# options INET6
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 ALQ
# Debugging for use in -current
options DEADLKRES
options INVARIANTS
options INVARIANT_SUPPORT
options WITNESS
options WITNESS_SKIPSPIN
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
# Support uncompress lzma rootfs
device geom_uzip
options GEOM_UZIP
options ROOTDEVNAME=\"ufs:/dev/map/rootfs.uzip\"
# PCI bus
device pci
device ar724x_pci
# NVRAM U-Boot Environment -> Kernel environment
device nvram2env
# Wireless NIC cards
options IEEE80211_DEBUG
options IEEE80211_SUPPORT_MESH
options IEEE80211_SUPPORT_TDMA
options IEEE80211_ALQ
#device wlan # 802.11 support
#device wlan_wep # 802.11 WEP support
#device wlan_ccmp # 802.11 CCMP support
#device wlan_tkip # 802.11 TKIP support
#device wlan_xauth # 802.11 hostap support
#device ath # Atheros pci/cardbus NIC's
#device ath_pci # PCI/PCIe bus glue
options ATH_DEBUG
options ATH_ENABLE_11N
options ATH_DIAGAPI
# device ath_hal
options AH_SUPPORT_AR5416
options AH_DEBUG
options AH_DEBUG_ALQ
# device ath_rate_sample
device mii
device arge
# USB devices - PB92 has EHCI only
#device usb
options USB_EHCI_BIG_ENDIAN_DESC # handle big-endian byte order
options USB_DEBUG
options USB_HOST_ALIGN=32
#device ehci
# Mass storage
#device scbus
#device umass
#device da
# Read MSDOS formatted disks
# options MSDOSFS
# GPIO Bus
#device gpio
#device gpioled
# SPI and flash
device spibus
device ar71xx_spi
device mx25l
# The flash is statically partitioned; add in that
device geom_map
device ar71xx_wdog
# Serial
device uart
device uart_ar71xx
device ar71xx_apb
# Network twiddling
device loop
device ether
#device md
#device bpf
#device random
#device if_bridge