• Willem de Bruijn's avatar
    net-tc: extract skip classify bit from tc_verd · e7246e12
    Willem de Bruijn authored
    Packets sent by the IFB device skip subsequent tc classification.
    A single bit governs this state. Move it out of tc_verd in
    anticipation of removing that __u16 completely.
    
    The new bitfield tc_skip_classify temporarily uses one bit of a
    hole, until tc_verd is removed completely in a follow-up patch.
    
    Remove the bit hole comment. It could be 2, 3, 4 or 5 bits long.
    With that many options, little value in documenting it.
    
    Introduce a helper function to deduplicate the logic in the two
    sites that check this bit.
    
    The field tc_skip_classify is set only in IFB on skbs cloned in
    act_mirred, so original packet sources do not have to clear the
    bit when reusing packets (notably, pktgen and octeon).
    Signed-off-by: default avatarWillem de Bruijn <willemb@google.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    e7246e12
dev.c 209 KB