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authorVladimir Oltean <vladimir.oltean@nxp.com>2022-07-16 21:53:44 +0300
committerDavid S. Miller <davem@davemloft.net>2022-07-18 12:44:37 +0100
commit7b02f40350f1b8011f724a052dcb0849cffa6c38 (patch)
tree4d1fc093df31ea4867ec1d99a5ef5f941f2c7be4
parent6ba1a4aa5974f8a47e6322cecc965e6357b58d80 (diff)
docs: net: dsa: mention that VLANs are now refcounted on shared ports
The blamed commit updated the way in which VLANs are handled at the cross-chip notifier layer and didn't update the documentation to say that. Fix it. Fixes: 134ef2388e7f ("net: dsa: add explicit support for host bridge VLANs") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--Documentation/networking/dsa/dsa.rst8
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/networking/dsa/dsa.rst b/Documentation/networking/dsa/dsa.rst
index 69ea35e19755..d742ba6bd211 100644
--- a/Documentation/networking/dsa/dsa.rst
+++ b/Documentation/networking/dsa/dsa.rst
@@ -951,7 +951,13 @@ Bridge VLAN filtering
allowed.
- ``port_vlan_add``: bridge layer function invoked when a VLAN is configured
- (tagged or untagged) for the given switch port..
+ (tagged or untagged) for the given switch port. The CPU port becomes a member
+ of a VLAN only if a foreign bridge port is also a member of it (and
+ forwarding needs to take place in software), or the VLAN is installed to the
+ VLAN group of the bridge device itself, for termination purposes
+ (``bridge vlan add dev br0 vid 100 self``). VLANs on shared ports are
+ reference counted and removed when there is no user left. Drivers do not need
+ to manually install a VLAN on the CPU port.
- ``port_vlan_del``: bridge layer function invoked when a VLAN is removed from the
given switch port