bd79708dbf
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
66 lines
2.2 KiB
Plaintext
66 lines
2.2 KiB
Plaintext
# ALCHEMY -- Generic kernel for Alchemy Au1xxx CPUs.
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#
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# For more information on this file, please read the handbook section on
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# Kernel Configuration Files:
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#
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# http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
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#
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# The handbook is also available locally in /usr/share/doc/handbook
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# if you've installed the doc distribution, otherwise always see the
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# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
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# latest information.
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#
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# An exhaustive list of options and more detailed explanations of the
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# device lines is also present in the ../../conf/NOTES and NOTES files.
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# If you are in doubt as to the purpose or necessity of a line, check first
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# in NOTES.
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#
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# $FreeBSD$
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ident ALCHEMY
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# Don't build any modules yet.
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makeoptions MODULES_OVERRIDE=""
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include "../alchemy/std.alchemy"
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#hints "ALCHEMY.hints" #Default places to look for devices.
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makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
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options DDB
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options KDB
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options SCHED_4BSD #4BSD scheduler
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options INET #InterNETworking
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options TCP_HHOOK # hhook(9) framework for TCP
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options NFSCL #Network Filesystem Client
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options NFS_ROOT #NFS usable as /, requires NFSCL
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options PSEUDOFS #Pseudo-filesystem framework
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# options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
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options BOOTP
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options BOOTP_NFSROOT
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options BOOTP_NFSV3
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options BOOTP_WIRED_TO=admsw0
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options BOOTP_COMPAT
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# options FFS #Berkeley Fast Filesystem
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# options SOFTUPDATES #Enable FFS soft updates support
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# options UFS_ACL #Support for access control lists
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# options UFS_DIRHASH #Improve performance on big directories
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options ROOTDEVNAME=\"nfs:10.0.0.1:/mnt/bsd\"
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# Debugging for use in -current
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#options DEADLKRES #Enable the deadlock resolver
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options INVARIANTS #Enable calls of extra sanity checking
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options INVARIANT_SUPPORT #Extra sanity checks of internal structures, required by INVARIANTS
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#options WITNESS #Enable checks to detect deadlocks and cycles
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#options WITNESS_SKIPSPIN #Don't run witness on spinlocks for speed
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device loop
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device ether
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device uart
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# device md
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