Commit f05e2db1 authored by Florian Fainelli's avatar Florian Fainelli Committed by David S. Miller

Documentation: networking: dsa: Describe port_vlan_filtering

Described what the port_vlan_filtering function is supposed to
accomplish.

Fixes: fb2dabad ("net: dsa: support VLAN filtering switchdev attr")
Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: default avatarVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7013d8e1
......@@ -535,6 +535,16 @@ 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, this callback does not need to be implemented.
When VLAN filtering is turned on, the hardware must be programmed with
rejecting 802.1Q frames which have VLAN IDs outside of the programmed allowed
VLAN ID map/rules. If there is no PVID programmed into the switch port,
untagged frames must be rejected as well. When turned off the switch must
accept any 802.1Q frames irrespective of their VLAN ID, and untagged frames are
allowed.
- 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
......
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