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| -rw-r--r-- | Documentation/networking/dsa/dsa.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/networking/dsa/dsa.rst b/Documentation/networking/dsa/dsa.rst index 92df551434f4..5c79740a533b 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 ==== |