sys: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

sys: Remove $FreeBSD$: one-line .h pattern

Remove /^\s*\*+\s*\$FreeBSD\$.*$\n/

tcp: remove a 4.4BSD relic

The actual code to modify this counter was disabled in 2c37256e5a59
and later removed in d0390e0570c.

tcp: Remove unused v6 state definitions

These are supposedly for compatibility with KAME, but they are
completely unused in our tree and don't exist in OpenBSD or NetBSD.

Reviewed by: kbowling, bz, gnn
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31700

White space cleanup -- remove trailing tab's or spaces
from any line.

Sponsored by: Netflix Inc.

Revert r334843, and partially revert r335180.

tcp_outflags[] were defined since 4BSD and are defined nowadays in
all its descendants. Removing them breaks third party application.

avoid 'tcp_outflags defined but not used'

sys: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

Update TCPS_HAVERCVDFIN() macro to correctly include all states a connection
can be in after receiving a FIN.

FWIW, NetBSD has this change for quite some time.

This has been tested at Netflix and Limelight in production traffic.

Reported by: Sam Kumar <samkumar99 at gmail.com> on transport@
Reviewed by: rrs
MFC after: 4 weeks
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D7475

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

- Import the HEAD csup code which is the basis for the cvsmode work.

Make tcpstates[] static, and make sure TCPSTATES is defined before
<netinet/tcp_fsm.h> is included into any compilation unit that needs
tcpstates[]. Also remove incorrect extern declarations and TCPDEBUG
conditionals. This allows kernels both with and without TCPDEBUG to
build, and unbreaks the tinderbox.

Approved by: re (rwatson)

Minor white space/style normalization.

/* -> /*- for license, minor formatting changes

s/send/sent/ in comment describing TCPS_SYN_RECEIVED.

Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson

WARNS=n and lint(1) silencer. Declare an array of (const) strings
as const char.

Undo rev 1.10, which took out TH_FIN from the CLOSING state. This
breaks simultaneous closes.

KAME related header files additions and merges.
(only those which don't affect c source files so much)

Reviewed by: cvs-committers
Obtained from: KAME project

$Id$ -> $FreeBSD$

Two cosmetic changes, one a typo and the other, a clarification.

Fix all areas of the system (or at least all those in LINT) to avoid storing
socket addresses in mbufs. (Socket buffers are the one exception.) A number
of kernel APIs needed to get fixed in order to make this happen. Also,
fix three protocol families which kept PCBs in mbufs to not malloc them
instead. Delete some old compatibility cruft while we're at it, and add
some new routines in the in_cksum family.

Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

New style sysctl & staticize alot of stuff.

Backed out changes in rev 1.5 that prevent sending FIN if in CLOSING
state. This causes an infinite loop in some rare cases (probably caused
by some other, much more difficult to find bug).

Don't need to retransmit FIN bit in CLOSING state.

Obtained from: Stevens, vol. 2, exercise 29.5 (solution p. 1090)

Obey RFC 793, section 3.4:

Several examples of connection initiation follow. Although these
examples do not show connection synchronization using data-carrying
segments, this is perfectly legitimate, so long as the receiving TCP
doesn't deliver the data to the user until it is clear the data is
valid (i.e., the data must be buffered at the receiver until the
connection reaches the ESTABLISHED state).

Made idempotent.

Submitted by: Paul

Added $Id$

BSD 4.4 Lite Kernel Sources