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authorVladimir Oltean <vladimir.oltean@nxp.com>2022-07-16 21:53:33 +0300
committerDavid S. Miller <davem@davemloft.net>2022-07-18 12:44:37 +0100
commitc56313a42aaa0c353af6425aed63719823ccfc32 (patch)
tree52ee436a02a27695e1354a644e330248f9c68880
parentc3f0e84d10862b2b2ed927561f12fe0bf8033590 (diff)
docs: net: dsa: add more info about the other arguments to get_tag_protocol
Changes were made to the prototype of get_tag_protocol without describing at a high level what they are about. Update the documentation to explain that. Fixes: 5ed4e3eb0217 ("net: dsa: Pass a port to get_tag_protocol()") Fixes: 4d776482ecc6 ("net: dsa: Get information about stacked DSA protocol") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--Documentation/networking/dsa/dsa.rst6
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/networking/dsa/dsa.rst b/Documentation/networking/dsa/dsa.rst
index f49996e97363..76b0bc1abbae 100644
--- a/Documentation/networking/dsa/dsa.rst
+++ b/Documentation/networking/dsa/dsa.rst
@@ -594,7 +594,11 @@ Switch configuration
--------------------
- ``get_tag_protocol``: this is to indicate what kind of tagging protocol is
- supported, should be a valid value from the ``dsa_tag_protocol`` enum
+ supported, should be a valid value from the ``dsa_tag_protocol`` enum.
+ The returned information does not have to be static; the driver is passed the
+ CPU port number, as well as the tagging protocol of a possibly stacked
+ upstream switch, in case there are hardware limitations in terms of supported
+ tag formats.
- ``setup``: setup function for the switch, this function is responsible for setting
up the ``dsa_switch_ops`` private structure with all it needs: register maps,