From: Govindarajulu Varadarajan <gvara...@cisco.com> Date: Mon, 10 Jun 2019 07:27:02 -0700
> When stack receives pkt: [802.1P vlan 0][802.1AD vlan 100][IPv4], > vlan_do_receive() returns false if it does not find vlan_dev. Later > __netif_receive_skb_core() fails to find packet type handler for > skb->protocol 801.1AD and drops the packet. > > 801.1P header with vlan id 0 should be handled as untagged packets. > This patch fixes it by checking if vlan_id is 0 and processes next vlan > header. > > Signed-off-by: Govindarajulu Varadarajan <gvara...@cisco.com> Under Linux we absolutely do not decapsulate the VLAN protocol unless a VLAN device is configured on that interface.
