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Mark Johnston 4a7c6d6206 pf: Fix handling of v6 loopback connections with pf syncookies enabled
The SYN|ACK generated by pf needs to inherit M_LOOP from the original
SYN, otherwise it gets dropped by ip6_input().

Fix this by adding an mbuf_flags argument to pf_build_tcp() that can be
used to set both M_SKIP_FIREWALL and M_LOOP as needed.  Set M_LOOP on
the output mbuf if it was generated in response to an mbuf with M_LOOP
set.

Add a regression test case.  The v4 case had no problems, but the v6
case fails without this change.

Reviewed by:	kp
MFC after:	1 month
Sponsored by:	Klara, Inc.
Sponsored by:	Zenarmor
Differential Revision:	https://reviews.freebsd.org/D47257
2024-10-29 15:01:20 +00:00
.cirrus-ci
.github .github: Update the clang release used for macos 2024-10-21 13:23:16 +01:00
bin manuals: Fix "unusual .Xr" warnings with a script 2024-10-15 17:18:14 -03:00
cddl zstream: avoid absolute symlink 2024-10-26 08:53:16 -04:00
contrib Tentatively merge llvm fix for buildworld WITH_ASAN 2024-10-28 18:34:58 +01:00
crypto Canonicalize the name of the FreeBSD Foundation 2024-10-24 05:03:07 +08:00
etc Merge llvm-project main llvmorg-19-init-18630-gf2ccf80136a0 2024-10-23 20:26:01 +02:00
gnu Remove residual blank line at start of Makefile 2024-07-15 16:43:39 -06:00
include Update Makefile.depend files 2024-10-14 10:26:17 -07:00
kerberos5 Remove residual blank line at start of Makefile 2024-07-15 16:43:39 -06:00
lib manuals: Fix dates 2024-10-28 12:26:03 -03:00
libexec nuageinit: add support for OpenStack network config 2024-10-29 14:23:47 +01:00
release ACPI: Add ACPI_Q_AEI_NOPULL quirk and use in EC2 2024-10-25 19:34:56 -07:00
rescue Remove residual blank line at start of Makefile 2024-07-15 16:43:39 -06:00
sbin sysctl: Add flags to filter jail prison and vnet variables 2024-10-29 19:26:11 +08:00
secure Update Makefile.depend files 2024-10-14 10:26:17 -07:00
share rc: Remove rc_fast_and_loose 2024-10-28 22:10:49 +01:00
stand stand: Ugly hack due to default change 2024-10-28 13:51:53 -06:00
sys pf: Fix handling of v6 loopback connections with pf syncookies enabled 2024-10-29 15:01:20 +00:00
targets bootstrap-packages.sh escape ++ 2024-10-16 09:26:29 -07:00
tests pf: Fix handling of v6 loopback connections with pf syncookies enabled 2024-10-29 15:01:20 +00:00
tools rc.d/opensm: Only install when MK_OFED_EXTRA is set 2024-10-29 13:01:00 +00:00
usr.bin mktemp(1): bring the documentation up to date with best practice 2024-10-27 16:36:31 +00:00
usr.sbin manuals: Fix dates 2024-10-28 12:26:03 -03:00
.arcconfig arcanist: use FreeBSD/git project repository instead of FreeBSD/svn 2022-08-23 14:16:41 +00:00
.arclint
.cirrus.yml Cirrus-CI: switch to llvm18 by default 2024-04-07 17:23:25 -04:00
.clang-format clang-format: Minor tweaks 2024-04-30 17:33:43 -04:00
.git-blame-ignore-revs iflib: Ignore fa7045f99c in blame 2024-09-22 10:09:29 +08:00
.gitattributes Remove SVN related Git attributes 2023-12-26 10:28:28 -07:00
.gitignore .gitignore: add sys/*/compile 2024-02-02 09:20:36 -07:00
.mailmap mailmap: Translate my personal address 2024-06-22 08:57:56 +02:00
CONTRIBUTING.md CONTRIBUTING.md/style: spring cleaning 2024-05-10 15:07:03 -06:00
COPYRIGHT copyright: Bump the copyright date. 2023-12-31 23:15:43 -07:00
LOCKS Update LOCKS for Git 2023-12-26 10:28:25 -07:00
MAINTAINERS man filesystems: fix more xrefs after move to s4 2024-06-27 18:32:05 -06:00
Makefile armv6: Remove support for building armv6 2024-07-12 11:31:53 +00:00
Makefile.inc1 lib/libcrypt: unbundle hash functions 2024-10-25 16:02:38 +02:00
Makefile.libcompat Remove residual blank line at start of Makefile 2024-07-15 16:43:39 -06:00
Makefile.sys.inc Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:55:03 -06:00
ObsoleteFiles.inc libcxx-compat: don't remove headers that were reintroduced by reverts 2024-10-23 20:26:48 +02:00
README.md Update README.md to add pointer to release page. 2024-05-09 20:40:46 -06:00
RELNOTES RELNOTES: Add mididump(1) 2024-10-19 16:29:33 +02:00
UPDATING rc: Remove rc_fast_and_loose 2024-10-28 22:10:49 +01:00

FreeBSD Source:

This is the top level of the FreeBSD source directory.

FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.

For copyright information, please see the file COPYRIGHT in this directory. Additional copyright information also exists for some sources in this tree - please see the specific source directories for more information.

The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7), config(8), FreeBSD handbook on building userland, and Handbook for kernels for more information, including setting make(1) variables.

For information on the CPU architectures and platforms supported by FreeBSD, see the FreeBSD website's Platforms page.

For official FreeBSD bootable images, see the release page.

Source Roadmap:

Directory Description
bin System/user commands.
cddl Various commands and libraries under the Common Development and Distribution License.
contrib Packages contributed by 3rd parties.
crypto Cryptography stuff (see crypto/README).
etc Template files for /etc.
gnu Commands and libraries under the GNU General Public License (GPL) or Lesser General Public License (LGPL). Please see gnu/COPYING and gnu/COPYING.LIB for more information.
include System include files.
kerberos5 Kerberos5 (Heimdal) package.
lib System libraries.
libexec System daemons.
release Release building Makefile & associated tools.
rescue Build system for statically linked /rescue utilities.
sbin System commands.
secure Cryptographic libraries and commands.
share Shared resources.
stand Boot loader sources.
sys Kernel sources (see sys/README.md).
targets Support for experimental DIRDEPS_BUILD
tests Regression tests which can be run by Kyua. See tests/README for additional information.
tools Utilities for regression testing and miscellaneous tasks.
usr.bin User commands.
usr.sbin System administration commands.

For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see FreeBSD Handbook.