freebsd-dev/sys/mips/conf/IDT
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

56 lines
1.4 KiB
Plaintext

# $FreeBSD$
cpu CPU_MIPS4KC
ident RB532
# Don't build any modules yet.
makeoptions MODULES_OVERRIDE=""
include "../idt/std.idt"
hints "IDT.hints" #Default places to look for devices.
makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
options DDB
options KDB
options SCHED_4BSD #4BSD scheduler
options INET #InterNETworking
options TCP_HHOOK # hhook(9) framework for TCP
options NFSCL #Network Filesystem Client
options NFS_ROOT #NFS usable as /, requires NFSCL
options PSEUDOFS #Pseudo-filesystem framework
options BOOTP
options BOOTP_NFSROOT
options BOOTP_NFSV3
options BOOTP_WIRED_TO=kr0
options BOOTP_COMPAT
# Debugging for use in -current
#options DEADLKRES #Enable the deadlock resolver
options INVARIANTS #Enable calls of extra sanity checking
options INVARIANT_SUPPORT #Extra sanity checks of internal structures, required by INVARIANTS
device loop
device pci
device ether
device miibus
device vr
device kr
device uart
device md
# Wireless NIC cards
device wlan # 802.11 support
device wlan_wep # 802.11 WEP support
device wlan_tkip # 802.11 TKIP support
device ath # Atheros NIC's
device ath_pci # Atheros pci/cardbus glue
device ath_hal # pci/cardbus chip support
options AH_SUPPORT_AR5416 # enable AR5416 tx/rx descriptors
device ath_rate_sample # SampleRate tx rate control for ath
options ATH_DEBUG
device bpf