• Lucy Liu's avatar
    ixgbe: allow vlan egress priority mapping in DCB mode · 36e89d73
    Lucy Liu authored
    The skb priority to vlan-qos egress mapping that can be configured using
    set_egress_map with vconfig is overriden by the DCB code in the driver.
    
    This patch allows this existing mechanism to work and will increase the
    configuration flexibility of DCB mode on Linux.
    
    A hierarchy of configuration is:
    
    1. Modifies the ixgbe_select_queue() routine for DCB mode to return the
    priority value from the VLAN tag. It will normally be zero, unless the egress
    priority map has modified it. This will get packets into the correct queue and
    result in the queue_mapping field being set correctly.
    
    2. Any tc filter which modifies queue_mapping will be honored, as the filters
    are handled after the vlan egress map is handled.
    Signed-off-by: default avatarLucy Liu <lucy.liu@intel.com>
    Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    36e89d73
ixgbe_main.c 172 KB