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Vladimir Oltean c1ae02d876 net: dsa: tag_sja1105: always prefer source port information from INCL_SRCPT
Currently the sja1105 tagging protocol prefers using the source port
information from the VLAN header if that is available, falling back to
the INCL_SRCPT option if it isn't. The VLAN header is available for all
frames except for META frames initiated by the switch (containing RX
timestamps), and thus, the "if (is_link_local)" branch is practically
dead.

The tag_8021q source port identification has become more loose
("imprecise") and will report a plausible rather than exact bridge port,
when under a bridge (be it VLAN-aware or VLAN-unaware). But link-local
traffic always needs to know the precise source port. With incorrect
source port reporting, for example PTP traffic over 2 bridged ports will
all be seen on sockets opened on the first such port, which is incorrect.

Now that the tagging protocol has been changed to make link-local frames
always contain source port information, we can reverse the order of the
checks so that we always give precedence to that information (which is
always precise) in lieu of the tag_8021q VID which is only precise for a
standalone port.

Fixes: d7f9787a76 ("net: dsa: tag_8021q: add support for imprecise RX based on the VBID")
Fixes: 91495f21fc ("net: dsa: tag_8021q: replace the SVL bridging with VLAN-unaware IVL bridging")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-06-29 14:41:26 +02:00
arch Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
block - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
certs KEYS: Add missing function documentation 2023-04-24 16:15:52 +03:00
crypto sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
Documentation Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
drivers net: dsa: sja1105: always enable the INCL_SRCPT option 2023-06-29 14:41:26 +02:00
fs Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
include net: mscc: ocelot: don't keep PTP configuration of all ports in single structure 2023-06-29 12:40:27 +02:00
init - Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in 2023-06-28 10:59:38 -07:00
io_uring Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
ipc Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2023-02-24 19:20:07 -08:00
kernel Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
lib Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
net net: dsa: tag_sja1105: always prefer source port information from INCL_SRCPT 2023-06-29 14:41:26 +02:00
rust rust: error: impl Debug for Error with errname() integration 2023-06-13 01:24:42 +02:00
samples Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
scripts Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
security v6.5-rc1-sysctl-next 2023-06-28 16:05:21 -07:00
sound regulator: Updates for v6.5 2023-06-28 13:32:47 -07:00
tools Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
usr initramfs: Check negative timestamp to prevent broken cpio archive 2023-04-16 17:37:01 +09:00
virt - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
.clang-format cxl for v6.4 2023-04-30 11:51:51 -07:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore linux-kselftest-kunit-6.4-rc1 2023-04-24 12:31:32 -07:00
.mailmap NFSD 6.5 Release Notes 2023-06-26 10:48:57 -07:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS - Address -Wmissing-prototype warnings 2023-06-26 16:43:54 -07:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
Makefile hardening updates for v6.5-rc1 2023-06-27 21:24:18 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.