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Lukasz Majewski 5055cccfc2 net: hsr: Provide RedBox support (HSR-SAN) 
Introduce RedBox support (HSR-SAN to be more precise) for HSR networks.
Following traffic reduction optimizations have been implemented:
- Do not send HSR supervisory frames to Port C (interlink)
- Do not forward to HSR ring frames addressed to Port C
- Do not forward to Port C frames from HSR ring
- Do not send duplicate HSR frame to HSR ring when destination is Port C

The corresponding patch to modify iptable2 sources has already been sent:
https://lore.kernel.org/netdev/20240308145729.490863-1-lukma@denx.de/T/

Testing procedure (veth and netns):
-----------------------------------
One shall run:
linux-vanila/tools/testing/selftests/net/hsr/hsr_redbox.sh
(Detailed description of the setup one can find in the test
script file).

Testing procedure (real hardware):
----------------------------------
The EVB-KSZ9477 has been used for testing on net-next branch
(SHA1: 5fc68320c1).

Ports 4/5 were used for SW managed HSR (hsr1) as first hsr0 for ports 1/2
(with HW offloading for ksz9477) was created. Port 3 has been used as
interlink port (single USB-ETH dongle).

Configuration - RedBox (EVB-KSZ9477):
if link set lan1 down;ip link set lan2 down
ip link add name hsr0 type hsr slave1 lan1 slave2 lan2 supervision 45 version 1
ip link add name hsr1 type hsr slave1 lan4 slave2 lan5 interlink lan3 supervision 45 version 1
ip link set lan4 up;ip link set lan5 up
ip link set lan3 up
ip addr add 192.168.0.11/24 dev hsr1
ip link set hsr1 up

Configuration - DAN-H (EVB-KSZ9477):

ip link set lan1 down;ip link set lan2 down
ip link add name hsr0 type hsr slave1 lan1 slave2 lan2 supervision 45 version 1
ip link add name hsr1 type hsr slave1 lan4 slave2 lan5 supervision 45 version 1
ip link set lan4 up;ip link set lan5 up
ip addr add 192.168.0.12/24 dev hsr1
ip link set hsr1 up

This approach uses only SW based HSR devices (hsr1).

--------------          -----------------       ------------
DAN-H  Port5 | <------> | Port5         |       |
       Port4 | <------> | Port4   Port3 | <---> | PC
             |          | (RedBox)      |       | (USB-ETH)
EVB-KSZ9477  |          | EVB-KSZ9477   |       |
--------------          -----------------       ------------

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-04-26 12:04:43 +02:00
..
acpi ACPI: bus: allow _UID matching for integer zero 2024-04-08 16:57:51 +02:00
asm-generic sched: Add missing memory barrier in switch_mm_cid 2024-04-16 13:59:45 +02:00
clocksource
crypto This update includes the following changes: 2024-03-15 14:46:54 -07:00
drm drm fixes for 6.9-rc1 2024-03-21 19:04:31 -07:00
dt-bindings Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
keys
kunit
kvm KVM: arm64: Fix host-programmed guest events in nVHE 2024-03-26 01:51:44 -07:00
linux Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue 2024-04-25 20:00:54 -07:00
math-emu
media media updates for v6.9-rc1 2024-03-15 11:36:54 -07:00
memory
misc
net net/sched: fix false lockdep warning on qdisc root lock 2024-04-26 10:46:41 +02:00
pcmcia
ras PCI/AER: Generalize TLP Header Log reading 2024-03-08 15:26:46 -06:00
rdma
rv
scsi scsi: sd: Fix TCG OPAL unlock on system resume 2024-03-25 15:46:12 -04:00
soc Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
sound ASoC: Fixes for v6.9 2024-04-05 08:48:12 +02:00
target
trace Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-04-18 13:12:24 -07:00
uapi net: hsr: Provide RedBox support (HSR-SAN) 2024-04-26 12:04:43 +02:00
ufs scsi: ufs: core: Add config_scsi_dev vops comment 2024-03-10 18:10:24 -04:00
vdso vdso: Use CONFIG_PAGE_SHIFT in vdso/datapage.h 2024-04-03 21:50:04 +02:00
video
xen