sctp: cleanup cdefs.h include

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

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

sctp: fix a signed/unsigned mismatch.

MFC after: 3 days

Add the SCTP_SUPPORT kernel option.

This is in preparation for enabling a loadable SCTP stack. Analogous to
IPSEC/IPSEC_SUPPORT, the SCTP_SUPPORT kernel option must be configured
in order to suppor

Add the SCTP_SUPPORT kernel option.

This is in preparation for enabling a loadable SCTP stack. Analogous to
IPSEC/IPSEC_SUPPORT, the SCTP_SUPPORT kernel option must be configured
in order to support a loadable SCTP implementation.

Discussed with: tuexen
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation

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Merge ^/head r327169 through r327340.

When adding support for sending SCTP packets containing an ABORT chunk
to ipfw in https://svnweb.freebsd.org/changeset/base/326233,
a dependency on the SCTP stack was added to ipfw by accident.

This

When adding support for sending SCTP packets containing an ABORT chunk
to ipfw in https://svnweb.freebsd.org/changeset/base/326233,
a dependency on the SCTP stack was added to ipfw by accident.

This was noted by Kevel Bowling in https://reviews.freebsd.org/D13594
where also a solution was suggested. This patch is based on Kevin's
suggestion, but implements the required SCTP checksum computation
without any dependency on other SCTP sources.

While there, do some cleanups and improve comments.

Thanks to Kevin Kevin Browling for reporting the issue and suggesting
a fix.

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Retire SCTP_WITH_NO_CSUM option.

This option was used in the early days to allow performance measurements
extrapolating the use of SCTP checksum offloading. Since this feature
is now available, get

Retire SCTP_WITH_NO_CSUM option.

This option was used in the early days to allow performance measurements
extrapolating the use of SCTP checksum offloading. Since this feature
is now available, get rid of this option.
This also un-breaks the LINT kernel. Thanks to markj@ for making me
aware of the problem.

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Merge ^/head r325999 through r326131.

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

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.

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Merge ^/head r309519 through r309757.

Whitespace changes.

The tools using to generate the sources has been updated and produces
different whitespaces. Commit this seperately to avoid intermixing
these with real code changes.

MFC after:

Whitespace changes.

The tools using to generate the sources has been updated and produces
different whitespaces. Commit this seperately to avoid intermixing
these with real code changes.

MFC after: 3 days

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IFC @ r238370

IFC @ r236291.
Diff reductions to the enclosure driver made in r235911.

Merge head r233826 through r236168.

Use consistent text at the begining of the files.

MFC after: 3 days

IFC @230489 (pending review).

IFC to head to catch up the bhyve branch

Approved by: grehan@

Fix unused parameter warnings.
While there, fix some whitespace issues.

MFC after: 3 months.

Merge svn+ssh://svn.freebsd.org/base/head@218816

1) Typo correction in comments and one spacing change.
2) Mass update to all copyrights.
MFC after: 3 Months

Merge svn+ssh://svn.freebsd.org/base/head@214309

Fix the the SCTP_WITH_NO_CSUM option when used in combination with
interface supporting CRC offload. While at it, make use of the
feature that the loopback interface provides CRC offloading.

MFC aft

Fix the the SCTP_WITH_NO_CSUM option when used in combination with
interface supporting CRC offload. While at it, make use of the
feature that the loopback interface provides CRC offloading.

MFC after: 4 weeks

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Update to current version of head.

MFC of 2 items to fix the csum for v6 issue:
Revision 205075 and 205104:

---------205075----------
With the recent change of the sctp checksum to support offload,
no delayed checksum was added to th

MFC of 2 items to fix the csum for v6 issue:
Revision 205075 and 205104:

---------205075----------
With the recent change of the sctp checksum to support offload,
no delayed checksum was added to the ip6 output code. This
causes cards that do not support SCTP checksum offload to
have SCTP packets that are IPv6 NOT have the sctp checksum
performed. Thus you could not communicate with a peer. This
adds the missing bits to make the checksum happen for these cards.
-------------------------
---------205104----------
The proper fix for the delayed SCTP checksum is to
have the delayed function take an argument as to the offset
to the SCTP header. This allows it to work for V4 and V6.
This of course means changing all callers of the function
to either pass the header len, if they have it, or create
it (ip_hl << 2 or sizeof(ip6_hdr)).
-------------------------
PR: 144529

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Merge svn+ssh://svn.freebsd.org/base/head@205234