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Vladimir Oltean 1ce413fd4d net: dsa: xrs700x: reject unsupported HSR configurations 
[ Upstream commit 30296ac764 ]

As discussed here:
https://lore.kernel.org/netdev/20240620090210.drop6jwh7e5qw556@skbuf/

the fact is that the xrs700x.c driver only supports offloading
HSR_PT_SLAVE_A and HSR_PT_SLAVE_B (which were the only port types at the
time the offload was written, _for this driver_).

Up until now, the API did not explicitly tell offloading drivers what
port has what role. So xrs700x can get confused and think that it can
support a configuration which it actually can't. There was a table in
the attached link which gave an example:

$ ip link add name hsr0 type hsr slave1 swp0 slave2 swp1 \
	interlink swp2 supervision 45 version 1

        HSR_PT_SLAVE_A    HSR_PT_SLAVE_B      HSR_PT_INTERLINK
 ----------------------------------------------------------------
 user
 space        0                 1                   2
 requests
 ----------------------------------------------------------------
 XRS700X
 driver       1                 2                   -
 understands

The switch would act as if the ring ports were swp1 and swp2.

Now that we have explicit hsr_get_port_type() API, let's use that to
work around the unintended semantical changes of the offloading API
brought by the introduction of interlink ports in HSR.

Fixes: 5055cccfc2 ("net: hsr: Provide RedBox support (HSR-SAN)")
Cc: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: George McCollister <george.mccollister@gmail.com>
Link: https://patch.msgid.link/20251130131657.65080-5-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-12-18 14:03:31 +01:00
arch um: Disable KASAN_INLINE when STATIC_LINK is selected 2025-12-18 14:03:29 +01:00
block block/blk-throttle: Fix throttle slice time for SSDs 2025-12-18 14:03:03 +01:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: ahash - Zero positive err value in ahash_update_finish 2025-12-18 14:03:12 +01:00
Documentation dt-bindings: PCI: amlogic: Fix the register name of the DBI region 2025-12-18 14:02:54 +01:00
drivers net: dsa: xrs700x: reject unsupported HSR configurations 2025-12-18 14:03:31 +01:00
fs smb: client: relax WARN_ON_ONCE(SMBDIRECT_SOCKET_*) checks in recv_done() and smbd_conn_upcall() 2025-12-18 14:03:29 +01:00
include net: hsr: create an API to get hsr port type 2025-12-18 14:03:31 +01:00
init printk changes for 6.18 2025-10-04 11:13:11 -07:00
io_uring io_uring/zcrx: call netdev_queue_get_dma_dev() under instance lock 2025-12-18 14:02:56 +01:00
ipc namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
kernel rqspinlock: Use trylock fallback when per-CPU rqnode is busy 2025-12-18 14:03:28 +01:00
lib lib/vsprintf: Check pointer before dereferencing in time_and_date() 2025-12-18 14:02:58 +01:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm 8 hotfixes. 4 are cc:stable, 7 are against mm/. 2025-11-26 12:38:05 -08:00
net net: hsr: create an API to get hsr port type 2025-12-18 14:03:31 +01:00
rust rust: Add -fno-isolate-erroneous-paths-dereference to bindgen_skip_c_flags 2025-11-10 08:37:06 +08:00
samples samples: work around glibc redefining some of our defines wrong 2025-11-21 09:29:02 -08:00
scripts kbuild: don't enable CC_CAN_LINK if the dummy program generates warnings 2025-12-18 14:03:01 +01:00
security landlock: Fix handling of disconnected directories 2025-12-18 14:03:27 +01:00
sound ASoC: Intel: catpt: Fix error path in hw_params() 2025-12-18 14:03:24 +01:00
tools selftests: bonding: add delay before each xvlan_over_bond connectivity check 2025-12-18 14:03:27 +01:00
usr gen_init_cpio: Ignore fsync() returning EINVAL on pipes 2025-10-07 09:53:05 -07:00
virt KVM: guest_memfd: Remove bindings on memslot deletion when gmem is dying 2025-11-04 09:16:53 -08:00
.clang-format memblock: drop for_each_free_mem_pfn_range_in_zone_from() 2025-09-14 08:49:03 +03:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: remove Alyssa Rosenzweig 2025-09-18 21:17:31 +02:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore .gitignore: ignore compile_commands.json globally 2025-08-12 15:53:55 -07:00
.mailmap 8 hotfixes. 4 are cc:stable, 7 are against mm/. 2025-11-26 12:38:05 -08:00
.pylintrc tools: docs: parse-headers.py: move it from sphinx dir 2025-08-29 15:54:42 -06:00
.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 MAINTAINERS: mark ISDN subsystem as orphan 2025-10-27 17:49:45 -07:00
Kbuild sched: Make migrate_{en,dis}able() inline 2025-09-25 09:57:16 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS soc: fixes for 6.18, part 4 2025-11-28 09:57:31 -08:00
Makefile Linux 6.18.1 2025-12-12 18:42:47 +01:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

README 

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 reStructuredText 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.