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

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

sctp: fix a signed/unsigned mismatch.

MFC after: 3 days

sctp: avoid undefined behaviour and cleanup the code.

MFC after: 3 days

sctp: Use m_apply() to calcuate a checksum for an mbuf chain

m_apply() works on unmapped mbufs, so this will let us elide
mb_unmapped_to_ext() calls preceding sctp_calculate_cksum() calls in
the net

sctp: Use m_apply() to calcuate a checksum for an mbuf chain

m_apply() works on unmapped mbufs, so this will let us elide
mb_unmapped_to_ext() calls preceding sctp_calculate_cksum() calls in
the network stack.

Modify sctp_calculate_cksum() to assume it's passed an mbuf header.
This assumption appears to be true in practice, and we need to know the
full length of the chain.

No functional change intended.

Reviewed by: tuexen, jhb
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32941

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No need to include netinet/sctp_crc32.h twice.

Move the definition of SCTP's system_base_info into sctp_crc32.c.

This file is the only SCTP source file compiled into the kernel when
SCTP_SUPPORT is configured. sctp_delayed_checksum() references

Move the definition of SCTP's system_base_info into sctp_crc32.c.

This file is the only SCTP source file compiled into the kernel when
SCTP_SUPPORT is configured. sctp_delayed_checksum() references a couple
of counters defined in system_base_info, so the change allows these
counters to be referenced in a kernel compiled without "options SCTP".

Submitted by: tuexen
MFC with: r362338

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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 r352319 through r352435.

When the IP layer calls back into the SCTP layer to perform the SCTP
checksum computation, do not assume that the IP header chain and the
SCTP common header are in contiguous memory although the SCTP

When the IP layer calls back into the SCTP layer to perform the SCTP
checksum computation, do not assume that the IP header chain and the
SCTP common header are in contiguous memory although the SCTP lays
out the mbuf chains that way. If there are IP-level options inserted
by the IP layer, the constraint is not fulfilled anymore.

This issues was found by running syzkaller. Thanks to markj@ who is
running an instance which also provides kernel dumps. This allowed me
to find this issue.

MFC after: 3 days

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MFHead @349234

Sponsored by: The FreeBSD Foundation

Separate kernel crc32() implementation to its own header (gsb_crc32.h) and
rename the source to gsb_crc32.c.

This is a prerequisite of unifying kernel zlib instances.

PR: 229763
Submitted by: Yosh

Separate kernel crc32() implementation to its own header (gsb_crc32.h) and
rename the source to gsb_crc32.c.

This is a prerequisite of unifying kernel zlib instances.

PR: 229763
Submitted by: Yoshihiro Ota <ota at j.email.ne.jp>
Differential Revision: https://reviews.freebsd.org/D20193

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Revert https://svnweb.freebsd.org/changeset/base/336503
since I also ran the export script with different parameters.

Whitespace changes due to change if ident.

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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Whitespace changes.

The toolchain for processing the sources has been updated. No functional
change.

MFC after: 3 days

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