• Felix Fietkau's avatar
    net: sched: Introduce connmark action · 22a5dc0e
    Felix Fietkau authored
    This tc action allows you to retrieve the connection tracking mark
    This action has been used heavily by openwrt for a few years now.
    
    There are known limitations currently:
    
    doesn't work for initial packets, since we only query the ct table.
      Fine given use case is for returning packets
    
    no implicit defrag.
      frags should be rare so fix later..
    
    won't work for more complex tasks, e.g. lookup of other extensions
      since we have no means to store results
    
    we still have a 2nd lookup later on via normal conntrack path.
    This shouldn't break anything though since skb->nfct isn't altered.
    
    V2:
    remove unnecessary braces (Jiri)
    change the action identifier to 14 (Jiri)
    Fix some stylistic issues caught by checkpatch
    V3:
    Move module params to bottom (Cong)
    Get rid of tcf_hashinfo_init and friends and conform to newer API (Cong)
    Acked-by: default avatarJiri Pirko <jiri@resnulli.us>
    Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
    Signed-off-by: default avatarJamal Hadi Salim <jhs@mojatatu.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    22a5dc0e
Makefile 2.5 KB