IEEE 802.1ah (Provider Backbone Bridging) uses ethertype 0x88E7 as the Backbone Service Tag (B-TAG). Some deployments stack 802.1ah on top of existing QinQ or single-tagged VLAN infrastructure, creating scenarios where a VF needs to negotiate support for the 0x88E7 ethertype with the PF in order to install correct VLAN filters.
Add VIRTCHNL_VLAN_ETHERTYPE_88E7 = BIT(3) to the virtchnl_vlan_support capability bitmask so that VF drivers can advertise and negotiate 0x88E7 VLAN ethertype support through the existing VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS handshake. The new bit follows the established BIT(N) pattern of the enum and does not conflict with any existing flag. Signed-off-by: Aleksandr Loktionov <[email protected]> --- include/linux/avf/virtchnl.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/avf/virtchnl.h b/include/linux/avf/virtchnl.h index 11bdab5..511c882 100644 --- a/include/linux/avf/virtchnl.h +++ b/include/linux/avf/virtchnl.h @@ -636,6 +636,7 @@ enum virtchnl_vlan_support { VIRTCHNL_VLAN_ETHERTYPE_8100 = BIT(0), VIRTCHNL_VLAN_ETHERTYPE_88A8 = BIT(1), VIRTCHNL_VLAN_ETHERTYPE_9100 = BIT(2), + VIRTCHNL_VLAN_ETHERTYPE_88E7 = BIT(3), VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1 = BIT(8), VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2 = BIT(9), VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2 = BIT(10), -- 2.52.0
