netdev - [PATCH net-next 15/15] Documentation: net: dsa: mention simple HSR offload helpers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20251130131657.65080-16-vladimir.oltean@nxp.com>
Date: Sun, 30 Nov 2025 15:16:57 +0200
From: Vladimir Oltean <vladimir.oltean@....com>
To: netdev@...r.kernel.org
Cc: Andrew Lunn <andrew+netdev@...n.ch>
Subject: [PATCH net-next 15/15] Documentation: net: dsa: mention simple HSR offload helpers

Keep the documentation up to date.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 Documentation/networking/dsa/dsa.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/networking/dsa/dsa.rst b/Documentation/networking/dsa/dsa.rst
index 89dc15bcf271..378f089f84b5 100644
--- a/Documentation/networking/dsa/dsa.rst
+++ b/Documentation/networking/dsa/dsa.rst
@@ -1119,6 +1119,14 @@ methods must be implemented:
 - ``port_hsr_leave``: function invoked when a given switch port leaves a
   DANP/DANH and returns to normal operation as a standalone port.
 
+Note that the ``NETIF_F_HW_HSR_DUP`` feature relies on transmission towards
+multiple ports, which is generally available whenever the tagging protocol uses
+the ``dsa_xmit_port_mask()`` helper function. If the helper is used, the HSR
+offload feature should also be set. The ``dsa_port_simple_hsr_join()`` and
+``dsa_port_simple_hsr_leave()`` methods can be used as generic implementations
+of ``port_hsr_join`` and ``port_hsr_leave``, if this is the only supported
+offload feature.
+
 TODO
 ====
 
-- 
2.34.1