Described what the port_vlan_filtering function is supposed to
accomplish.
Fixes: fb2dabad69f0 ("net: dsa: support VLAN filtering switchdev attr")
Signed-off-by: Florian Fainelli <[email protected]>
---
Documentation/networking/dsa/dsa.txt | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/networking/dsa/dsa.txt
b/Documentation/networking/dsa/dsa.txt
index 411b57fd73aa..a42fd2ec32a5 100644
--- a/Documentation/networking/dsa/dsa.txt
+++ b/Documentation/networking/dsa/dsa.txt
@@ -535,6 +535,12 @@ Bridge layer
Bridge VLAN filtering
---------------------
+- port_vlan_filtering: bridge layer function invoked when the bridge gets
+ configured for turning on or off VLAN filtering. If nothing specific needs to
+ be done at the hardware level, 0 must be returned. When VLAN filtering is
+ turned on, the hardware must be programmed with rejecting non-802.1Q frames,
+ when turned off the switch must accept any 802.1Q frames.
+
- port_vlan_prepare: bridge layer function invoked when the bridge prepares the
configuration of a VLAN on the given port. If the operation is not supported
by the hardware, this function should return -EOPNOTSUPP to inform the bridge
--
2.7.4
