tc-fw(8)

NAME

   fw - fwmark traffic control filter

SYNOPSIS

   tc filter ... fw [ classid CLASSID ] [ action ACTION_SPEC ]

DESCRIPTION

   the  fw  filter  allows  to  classify packets based on a previously set
   fwmark by iptables.  If it is identical to  the  filter's  handle,  the
   filter  matches.   iptables allows to mark single packets with the MARK
   target, or whole connections using CONNMARK.  The benefit of using this
   filter instead of doing the heavy-lifting with tc itself is that on one
   hand it might be convenient to keep packet filtering and classification
   in  one  place, possibly having to match a packet just once, and on the
   other users familiar with iptables but not tc will  have  a  less  hard
   time adding QoS to their setups.

OPTIONS

   classid CLASSID
          Push matching packets to the class identified by CLASSID.

   action ACTION_SPEC
          Apply  an  action from the generic actions framework on matching
          packets.

EXAMPLES

   Take e.g. the following tc filter statement:

          tc filter add ... handle 6 fw classid 1:1

   will match if the packet's  fwmark  value  is  6.   This  is  a  sample
   iptables statement marking packets coming in on eth0:

          iptables -t mangle -A PREROUTING -i eth0 -j MARK --set-mark 6

SEE ALSO

   tc(8), iptables(8), iptables-extensions(8)

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