1Firewall mark classifier in tc(8)    Linux   Firewall mark classifier in tc(8)
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NAME

6       fw - fwmark traffic control filter
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SYNOPSIS

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

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

23       classid CLASSID
24              Push matching packets to the class identified by CLASSID.
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26       action ACTION_SPEC
27              Apply  an  action from the generic actions framework on matching
28              packets.
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EXAMPLES

31       Take e.g. the following tc filter statement:
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33              tc filter add ... handle 6 fw classid 1:1
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35       will match if the packet's fwmark value is 6.  This is a  sample  ipta‐
36       bles statement marking packets coming in on eth0:
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38              iptables -t mangle -A PREROUTING -i eth0 -j MARK --set-mark 6
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SEE ALSO

41       tc(8), iptables(8), iptables-extensions(8)
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45iproute2                          21 Oct 2015Firewall mark classifier in tc(8)
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