Simple action in tc(8)               Linux              Simple action in tc(8)



<?><?><?> (NAME)
       tc-simple - <?><?><?><?> <?><?><?><?><?> <?><?><?><?> <?><?>
       <?><?><?><?><?> <?><?><?><?><?><?>

<?><?><?><?><?> <?><?><?><?><?> (SYNOPSIS)
       tc ... action simple [ sdata STRING ] [ index INDEX ] [ CONTROL ]

       CONTROL := { reclassify | pipe | drop | continue | ok }


<?><?><?><?><?><?><?> (DESCRIPTION)
       <?><?><?> <?><?> <?><?><?><?><?> <?><?><?><?><?><?> <?><?><?> <?>
       <?><?> <?><?> <?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?>.
       <?><?> <?><?> <?><?><?> <?><?><?><?><?><?><?> <?><?><?><?><?><?> STRING
       <?><?><?><?><?><?><?><?> <?><?> <?><?><?> <?><?><?><?><?><?> <?><?>
       <?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?>
       <?><?><?><?><?> <?><?><?><?>.

<?><?><?><?><?><?><?><?> (OPTIONS)
       sdata STRING
              <?><?><?><?> <?><?><?><?><?> <?><?><?><?> <?><?><?> <?><?><?>.

       index INDEX
              <?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?> (index)
              <?><?><?><?>.

       CONTROL
              <?><?><?><?> <?><?><?><?><?><?> <?><?> <?><?> <?><?><?><?><?>
              <?><?><?><?><?> tc <?><?><?><?><?> <?><?><?><?>
              <?><?><?><?><?><?> <?><?> <?><?><?><?><?> <?><?><?>.
              <?><?><?><?> <?><?><?> <?><?><?><?><?><?> <?><?><?><?>
              <?><?><?><?> CONTROL<?> <?><?><?><?> <?><?><?><?><?><?><?>
              tc-actions(8) <?><?> <?><?><?><?><?><?>.

<?><?><?><?><?><?><?> (EXAMPLES)
       <?><?><?><?> <?><?><?> <?><?><?><?> <?><?><?><?><?><?> <?><?><?><?>
       <?><?> <?><?><?> <?><?> <?><?> <?><?><?><?> <?><?><?><?><?> ICMP <?><?>
       <?><?><?> <?><?><?><?> eth0 <?><?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?> <<Incoming ICMP!>> <?><?> <?><?><?><?><?> <?><?><?>.
       <?><?><?><?><?> <?><?> <?><?><?> <?><?><?> <?><?><?>:

       1)  <?><?><?><?><?><?> <?><?> <?><?><?><?> qdisc <?><?><?><?><?>
           (ingress) <?><?> eth0

       2)  <?><?><?><?><?><?><?><?><?><?> <?><?> <?><?><?><?><?><?> <?><?><?>
           ingress <?><?><?><?> eth0 <?><?> <?><?><?><?><?>
           <?><?><?><?><?><?><?><?> ICMP <?><?> <?><?><?><?><?> <?><?><?><?>
           <?> <?><?><?> <?><?><?><?> simple <?><?> <?><?><?><?>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?>.

       3)  <?><?><?><?><?> <?><?><?><?> <?> <?><?><?><?> <?><?><?><?>
           <?><?><?><?><?> <?><?><?><?> <?><?><?> <?><?><?><?><?><?><?>
           <?><?><?><?> <?><?><?> <?><?><?><?> <?><?><?><?><?><?> <?><?><?><?>
           <?><?><?>

       4)  <?><?><?><?><?> <?><?> <?><?><?><?> <?><?><?><?> <?><?>
           <?><?><?><?> (<?><?> <?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?>)

       5)  <?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?> <?><?> grep
           <?><?><?><?> <?><?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?>

       6)  <?><?><?><?><?> <?><?><?><?> <?><?><?><?> <?> <?><?><?><?><?><?>
           <?><?><?><?><?><?> <?><?><?><?><?><?><?> <?><?> <?><?><?><?><?> <?>

             $ tc qdisc add dev eth0 ingress
             $ tc filter add dev eth0 parent ffff: protocol ip prio 5 \
                 u32 match ip protocol 1 0xff flowid 1:1 action simple sdata "Incoming ICMP"

             $ sudo tc -s filter ls dev eth0 parent ffff:
              filter protocol ip pref 5 u32
              filter protocol ip pref 5 u32 fh 800: ht divisor 1
              filter protocol ip pref 5 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 1:1
                match 00010000/00ff0000 at 8
                action order 1: Simple <Incoming ICMP>
                 index 4 ref 1 bind 1 installed 29 sec used 29 sec
                 Action statistics:
                     Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
                     backlog 0b 0p requeues 0


             $ ping -c 1 www.google.ca
             PING www.google.ca (74.125.225.120) 56(84) bytes of data.
             64 bytes from ord08s08-in-f24.1e100.net (74.125.225.120): icmp_req=1 ttl=53 time=31.3 ms

             --- www.google.ca ping statistics ---
             1 packets transmitted, 1 received, 0% packet loss, time 0ms
             rtt min/avg/max/mdev = 31.316/31.316/31.316/0.000 ms

             $ dmesg | grep simple
             [135354.473951] simple: Incoming ICMP_1

             $ sudo tc/tc -s filter ls dev eth0 parent ffff:
             filter protocol ip pref 5 u32
             filter protocol ip pref 5 u32 fh 800: ht divisor 1
             filter protocol ip pref 5 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 1:1
               match 00010000/00ff0000 at 8
                action order 1: Simple <Incoming ICMP>
                 index 4 ref 1 bind 1 installed 206 sec used 67 sec
                Action statistics:
                Sent 84 bytes 1 pkt (dropped 0, overlimits 0 requeues 0)
                backlog 0b 0p requeues 0

<?><?><?><?><?><?> <?><?><?><?><?><?> (SEE ALSO)
       tc(8), tc-actions(8)

iproute2                          12 Jan 2015           Simple action in tc(8)