freebsd-skq/sys/mips/conf/AR724X_BASE
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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#
# AR724X -- Kernel configuration file for FreeBSD/MIPS for Atheros 724x systems
#
# This includes all the common drivers for the AR724x boards.
# Since the AR724x boards tend to have minimal flash (sometimes 4MB!),
# the majority of the kernel framework will be built as modules.
#
# $FreeBSD$
#
machine mips mips
ident AR724X_BASE
cpu CPU_MIPS24K
makeoptions KERNLOADADDR=0x80050000
options HZ=1000
options HWPMC_HOOKS
files "../atheros/files.ar71xx"
# For now, hints are per-board.
hints "AR724X_BASE.hints"
makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
# Build these as modules so small platform builds will have the
# modules already built.
makeoptions MODULES_OVERRIDE="gpio ar71xx if_gif if_gre if_bridge bridgestp usb wlan wlan_xauth wlan_acl wlan_wep wlan_tkip wlan_ccmp wlan_rssadapt wlan_amrr ath ath_pci hwpmc cam"
# 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
# Don't include the SCSI/CAM strings in the default build
options SCSI_NO_SENSE_STRINGS
options SCSI_NO_OP_STRINGS
# .. And no sysctl strings
options NO_SYSCTL_DESCR
options FFS #Berkeley Fast Filesystem
options NO_FFS_SNAPSHOT
# 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 pci
device ar724x_pci
# 802.11 framework
options IEEE80211_DEBUG
options IEEE80211_ALQ
options IEEE80211_SUPPORT_MESH
options IEEE80211_SUPPORT_SUPERG
options IEEE80211_SUPPORT_TDMA
options IEEE80211_AMPDU_AGE
#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
# Atheros wireless NICs
#device ath # Atheros interface support
#device ath_pci # Atheros PCI/Cardbus bus
options ATH_DEBUG
options ATH_DIAGAPI
options ATH_ENABLE_11N
options AH_DEBUG
options AH_DEBUG_ALQ
options ALQ
#device ath_hal
option AH_SUPPORT_AR5416
#device ath_rate_sample
option AH_RXCFG_SDMAMW_4BYTES
option AH_AR5416_INTERRUPT_MITIGATION
# There's no DFS radar detection support yet so this won't actually
# detect radars. It however does enable the rest of the channel change
# machinery so DFS can be debugged.
option ATH_ENABLE_DFS
device mii
device arge
options ARGE_DEBUG # Enable if_arge debugging for now
#device usb
options USB_EHCI_BIG_ENDIAN_DESC # handle big-endian byte order
options USB_DEBUG
options USB_HOST_ALIGN=32 # AR724X (MIPS in general?) requires this
#device ehci
#device umass
device scbus
device da
# On-board SPI flash
device spibus
device ar71xx_spi
device mx25l
device ar71xx_wdog
device uart
device uart_ar71xx
device ar71xx_apb
device loop
device ether
device md
device bpf
#device random
#device if_bridge
#device gif # ip[46] in ip[46] tunneling protocol
#device gre # generic encapsulation - only for IPv4 in IPv4 though atm
# Enable GPIO
#device gpio
#device gpioled