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CVS log for src/sys/netinet/tcp_vtw.h

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Default branch: MAIN


Revision 1.10 / (download) - annotate - [select for diffs], Sun Dec 11 08:09:20 2022 UTC (14 months, 1 week ago) by mlelstv
Branch: MAIN
CVS Tags: thorpej-ifq-base, thorpej-ifq, thorpej-altq-separation-base, thorpej-altq-separation, netbsd-10-base, netbsd-10-0-RC4, netbsd-10-0-RC3, netbsd-10-0-RC2, netbsd-10-0-RC1, netbsd-10, HEAD
Changes since 1.9: +6 -2 lines
Diff to previous 1.9 (colored)

Need larger fat pointers for 128bit cache lines.

Revision 1.8.14.1 / (download) - annotate - [select for diffs], Sun Apr 22 07:20:28 2018 UTC (5 years, 10 months ago) by pgoyette
Branch: pgoyette-compat
CVS Tags: pgoyette-compat-merge-20190127
Changes since 1.8: +9 -9 lines
Diff to previous 1.8 (colored) next main 1.9 (colored)

Sync with HEAD

Revision 1.9 / (download) - annotate - [select for diffs], Thu Apr 19 21:21:44 2018 UTC (5 years, 10 months ago) by christos
Branch: MAIN
CVS Tags: thorpej-i2c-spi-conf2-base, thorpej-i2c-spi-conf2, thorpej-i2c-spi-conf-base, thorpej-i2c-spi-conf, thorpej-futex2-base, thorpej-futex2, thorpej-futex-base, thorpej-futex, thorpej-cfargs2-base, thorpej-cfargs2, thorpej-cfargs-base, thorpej-cfargs, phil-wifi-base, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, netbsd-9-base, netbsd-9-3-RELEASE, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, isaki-audio2-base, isaki-audio2, is-mlppp-base, is-mlppp, cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x, bouyer-xenpvh-base2, bouyer-xenpvh-base1, bouyer-xenpvh-base, bouyer-xenpvh, bouyer-sunxi-drm-base, bouyer-sunxi-drm, ad-namecache-base3, ad-namecache-base2, ad-namecache-base1, ad-namecache-base, ad-namecache
Changes since 1.8: +9 -9 lines
Diff to previous 1.8 (colored)

s/static inline/static __inline/g for consistency.

Revision 1.5.12.2 / (download) - annotate - [select for diffs], Sun Dec 3 11:39:04 2017 UTC (6 years, 2 months ago) by jdolecek
Branch: tls-maxphys
Changes since 1.5.12.1: +0 -2 lines
Diff to previous 1.5.12.1 (colored) to branchpoint 1.5 (colored) next main 1.6 (colored)

update from HEAD

Revision 1.6.14.2 / (download) - annotate - [select for diffs], Sun Feb 5 13:40:59 2017 UTC (7 years ago) by skrll
Branch: nick-nhusb
Changes since 1.6.14.1: +1 -2 lines
Diff to previous 1.6.14.1 (colored) to branchpoint 1.6 (colored) next main 1.7 (colored)

Sync with HEAD

Revision 1.7.2.1 / (download) - annotate - [select for diffs], Sat Jan 7 08:56:51 2017 UTC (7 years, 1 month ago) by pgoyette
Branch: pgoyette-localcount
Changes since 1.7: +1 -2 lines
Diff to previous 1.7 (colored) next main 1.8 (colored)

Sync with HEAD.  (Note that most of these changes are simply $NetBSD$
tag issues.)

Revision 1.8 / (download) - annotate - [select for diffs], Tue Dec 13 08:29:03 2016 UTC (7 years, 2 months ago) by ozaki-r
Branch: MAIN
CVS Tags: tls-maxphys-base-20171202, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-compat-base, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, perseant-stdc-iso10646-base, perseant-stdc-iso10646, nick-nhusb-base-20170825, nick-nhusb-base-20170204, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, matt-nb8-mediatek-base, matt-nb8-mediatek, jdolecek-ncq-base, jdolecek-ncq, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan
Branch point for: pgoyette-compat
Changes since 1.7: +1 -2 lines
Diff to previous 1.7 (colored)

Remove unnecessary inclusions of nd6.h

Revision 1.6.14.1 / (download) - annotate - [select for diffs], Sun May 29 08:44:38 2016 UTC (7 years, 8 months ago) by skrll
Branch: nick-nhusb
Changes since 1.6: +1 -2 lines
Diff to previous 1.6 (colored)

Sync with HEAD

Revision 1.7 / (download) - annotate - [select for diffs], Tue Apr 26 08:44:45 2016 UTC (7 years, 9 months ago) by ozaki-r
Branch: MAIN
CVS Tags: pgoyette-localcount-base, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, nick-nhusb-base-20161204, nick-nhusb-base-20161004, nick-nhusb-base-20160907, nick-nhusb-base-20160529, localcount-20160914
Branch point for: pgoyette-localcount
Changes since 1.6: +1 -2 lines
Diff to previous 1.6 (colored)

Sweep unnecessary route.h inclusions

Revision 1.6.2.1 / (download) - annotate - [select for diffs], Wed Jul 17 03:16:31 2013 UTC (10 years, 7 months ago) by rmind
Branch: rmind-smpnet
Changes since 1.6: +24 -3 lines
Diff to previous 1.6 (colored) next main 1.7 (colored)

Checkpoint work in progress:
- Move PCB structures under __INPCB_PRIVATE, adjust most of the callers
  and thus make IPv4 PCB structures mostly opaque.  Any volunteers for
  merging in6pcb with inpcb (see rpaulo-netinet-merge-pcb branch)?
- Move various global vars to the modules where they belong, make them static.
- Some preliminary work for IPv4 PCB locking scheme.
- Make raw IP code mostly MP-safe.  Simplify some of it.
- Rework "fast" IP forwarding (ipflow) code to be mostly MP-safe.  It should
  run from a software interrupt, rather than hard.
- Rework tun(4) pseudo interface to be MP-safe.
- Work towards making some other interfaces more strict.

Revision 1.5.12.1 / (download) - annotate - [select for diffs], Mon Feb 25 00:30:05 2013 UTC (11 years ago) by tls
Branch: tls-maxphys
Changes since 1.5: +2 -1 lines
Diff to previous 1.5 (colored)

resync with head

Revision 1.5.2.1 / (download) - annotate - [select for diffs], Wed Jan 16 05:33:49 2013 UTC (11 years, 1 month ago) by yamt
Branch: yamt-pagecache
CVS Tags: yamt-pagecache-tag8
Changes since 1.5: +2 -1 lines
Diff to previous 1.5 (colored) next main 1.6 (colored)

sync with (a bit old) head

Revision 1.6 / (download) - annotate - [select for diffs], Fri Nov 23 14:48:31 2012 UTC (11 years, 3 months ago) by joerg
Branch: MAIN
CVS Tags: yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, tls-maxphys-base, tls-earlyentropy-base, tls-earlyentropy, rmind-smpnet-nbase, rmind-smpnet-base, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, nick-nhusb-base-20160422, nick-nhusb-base-20160319, nick-nhusb-base-20151226, nick-nhusb-base-20150921, nick-nhusb-base-20150606, nick-nhusb-base-20150406, nick-nhusb-base, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, khorben-n900, agc-symver-base, agc-symver
Branch point for: rmind-smpnet, nick-nhusb
Changes since 1.5: +2 -1 lines
Diff to previous 1.5 (colored)

Add RCS keyword. Avoid overflow in constant.

Revision 1.3.4.1 / (download) - annotate - [select for diffs], Thu Jun 23 14:20:26 2011 UTC (12 years, 8 months ago) by cherry
Branch: cherry-xenmp
Changes since 1.3: +3 -0 lines
Diff to previous 1.3 (colored) next main 1.4 (colored)

Catchup with rmind-uvmplock merge.

Revision 1.3.2.3 / (download) - annotate - [select for diffs], Sun Jun 12 00:24:30 2011 UTC (12 years, 8 months ago) by rmind
Branch: rmind-uvmplock
Changes since 1.3.2.2: +3 -0 lines
Diff to previous 1.3.2.2 (colored) to branchpoint 1.3 (colored) next main 1.4 (colored)

sync with head

Revision 1.5 / (download) - annotate - [select for diffs], Tue Jun 7 22:51:32 2011 UTC (12 years, 8 months ago) by joerg
Branch: MAIN
CVS Tags: yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, rmind-uvmplock-nbase, rmind-uvmplock-base, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, jmcneill-usbmp-pre-base2, jmcneill-usbmp-base9, jmcneill-usbmp-base8, jmcneill-usbmp-base7, jmcneill-usbmp-base6, jmcneill-usbmp-base5, jmcneill-usbmp-base4, jmcneill-usbmp-base3, jmcneill-usbmp-base2, jmcneill-usbmp-base10, jmcneill-usbmp-base, jmcneill-usbmp, jmcneill-audiomp3-base, jmcneill-audiomp3
Branch point for: yamt-pagecache, tls-maxphys
Changes since 1.4: +2 -0 lines
Diff to previous 1.4 (colored)

Be a bit cleaner and reduce the amount of namespace pollution

Revision 1.4 / (download) - annotate - [select for diffs], Mon Jun 6 19:15:43 2011 UTC (12 years, 8 months ago) by dyoung
Branch: MAIN
Changes since 1.3: +1 -0 lines
Diff to previous 1.3 (colored)

Don't allocate resources for vtw until/unless it is enabled.  This will
further help those machines where memory is in short supply.

TBD: release resources after vtw is disabled and all entries have
expired.

Revision 1.3.6.2 / (download) - annotate - [select for diffs], Mon Jun 6 09:09:57 2011 UTC (12 years, 8 months ago) by jruoho
Branch: jruoho-x86intr
Changes since 1.3.6.1: +414 -0 lines
Diff to previous 1.3.6.1 (colored) to branchpoint 1.3 (colored) next main 1.4 (colored)

Sync with HEAD.

Revision 1.3.2.2 / (download) - annotate - [select for diffs], Tue May 31 03:05:08 2011 UTC (12 years, 8 months ago) by rmind
Branch: rmind-uvmplock
Changes since 1.3.2.1: +414 -0 lines
Diff to previous 1.3.2.1 (colored) to branchpoint 1.3 (colored)

sync with head

Revision 1.3.6.1, Tue May 17 05:42:40 2011 UTC (12 years, 9 months ago) by jruoho
Branch: jruoho-x86intr
Changes since 1.3: +0 -414 lines
FILE REMOVED

file tcp_vtw.h was added on branch jruoho-x86intr on 2011-06-06 09:09:57 +0000

Revision 1.3.2.1, Tue May 17 05:42:40 2011 UTC (12 years, 9 months ago) by rmind
Branch: rmind-uvmplock
Changes since 1.3: +0 -414 lines
FILE REMOVED

file tcp_vtw.h was added on branch rmind-uvmplock on 2011-05-31 03:05:08 +0000

Revision 1.3 / (download) - annotate - [select for diffs], Tue May 17 05:42:40 2011 UTC (12 years, 9 months ago) by dholland
Branch: MAIN
CVS Tags: cherry-xenmp-base
Branch point for: rmind-uvmplock, jruoho-x86intr, cherry-xenmp
Changes since 1.2: +1 -1 lines
Diff to previous 1.2 (colored)

typo in comment

Revision 1.2 / (download) - annotate - [select for diffs], Tue May 3 23:57:41 2011 UTC (12 years, 9 months ago) by dyoung
Branch: MAIN
Changes since 1.1: +0 -6 lines
Diff to previous 1.1 (colored)

Remove #ifdef INET6 throughout.

Revision 1.1 / (download) - annotate - [select for diffs], Tue May 3 18:28:45 2011 UTC (12 years, 9 months ago) by dyoung
Branch: MAIN

Reduces the resources demanded by TCP sessions in TIME_WAIT-state using
methods called Vestigial Time-Wait (VTW) and Maximum Segment Lifetime
Truncation (MSLT).

MSLT and VTW were contributed by Coyote Point Systems, Inc.

Even after a TCP session enters the TIME_WAIT state, its corresponding
socket and protocol control blocks (PCBs) stick around until the TCP
Maximum Segment Lifetime (MSL) expires.  On a host whose workload
necessarily creates and closes down many TCP sockets, the sockets & PCBs
for TCP sessions in TIME_WAIT state amount to many megabytes of dead
weight in RAM.

Maximum Segment Lifetimes Truncation (MSLT) assigns each TCP session to
a class based on the nearness of the peer.  Corresponding to each class
is an MSL, and a session uses the MSL of its class.  The classes are
loopback (local host equals remote host), local (local host and remote
host are on the same link/subnet), and remote (local host and remote
host communicate via one or more gateways).  Classes corresponding to
nearer peers have lower MSLs by default: 2 seconds for loopback, 10
seconds for local, 60 seconds for remote.  Loopback and local sessions
expire more quickly when MSLT is used.

Vestigial Time-Wait (VTW) replaces a TIME_WAIT session's PCB/socket
dead weight with a compact representation of the session, called a
"vestigial PCB".  VTW data structures are designed to be very fast and
memory-efficient: for fast insertion and lookup of vestigial PCBs,
the PCBs are stored in a hash table that is designed to minimize the
number of cacheline visits per lookup/insertion.  The memory both
for vestigial PCBs and for elements of the PCB hashtable come from
fixed-size pools, and linked data structures exploit this to conserve
memory by representing references with a narrow index/offset from the
start of a pool instead of a pointer.  When space for new vestigial PCBs
runs out, VTW makes room by discarding old vestigial PCBs, oldest first.
VTW cooperates with MSLT.

It may help to think of VTW as a "FIN cache" by analogy to the SYN
cache.

A 2.8-GHz Pentium 4 running a test workload that creates TIME_WAIT
sessions as fast as it can is approximately 17% idle when VTW is active
versus 0% idle when VTW is inactive.  It has 103 megabytes more free RAM
when VTW is active (approximately 64k vestigial PCBs are created) than
when it is inactive.

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