freebsd-dev/sys/mips/conf/std.SWARM
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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#
# $FreeBSD$
#
hints "SWARM.hints"
include "../sibyte/std.sibyte"
options CFE
options CFE_CONSOLE
options CFE_ENV
options ALT_BREAK_TO_DEBUGGER
cpu CPU_SB1
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
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 _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
# Debugging for use in -current
#options DEADLKRES
options INVARIANTS
options INVARIANT_SUPPORT
options WITNESS
options FFS #Fast filesystem
options KTRACE
device pci
device miibus
device bge
device loop
device ether
device md
device random
options USB_DEBUG
device usb
device ohci
device uhci
device ehci
device umass
device scbus
device cd
device da
device pass
device ata