[Click] [click] how to print out queue size

[Eddie Kohler]

Soon-Yong,

Someone else I guess in the same class had a similar question, here is the 
email thread that resulted.

https://pdos.csail.mit.edu/pipermail/click/2009-February/007587.html

Eddie


Soon-Yong Sohn wrote:
> Hello,
> 
> I would like to figure out how to print out the queue size.
> I implemented Queue(200) element in interface and want to print out the queue size during routing process using PrintQueueSize(). 
> 
> Followings are my click configuration.
> Please let me know how I can get queue size of the interface.
> Thank you
> 
> Eric
> 
> 
> // Shared IPv4 input path and routing table
> 
>      ip4 :: Strip(14)
>    -> CheckIPHeader(INTERFACES 10.1.4.3/24 10.1.1.2/24 10.1.5.3/24)
>    -> IPC :: IPClassifier(src 10.1.3.2/24 and dst 10.1.1.3/24, icmp, -);
>    IPC[0]
>    -> PrintQueueSize()
>    ->  rt4 :: LinearIPLookup(10.1.4.3/32 3, 10.1.1.2/32 3, 10.1.5.3/32 3);
>    IPC[1]
>    ->  rt4 ;
>    IPC[2]
>    ->  rt4 ;
> 
> 
> // ARP responses are copied to each ARPQuerier and the host.
> 
>      arpt :: Tee(4);
> 
> 
> // Input and output paths for eth2
> 
>     FromDevice(eth2) ->  c0 :: Classifier(
>     12/0800,            // [0] IPv4 packet
>     12/0806 20/0001,    // [1] ARP request
>     12/0806 20/0002,    // [2] ARP reply
>     12/86dd 20/3aff 54/87,      // [3] IPv6 ICMP ND solicitation
>     12/86dd 20/3aff 54/88,      // [4] IPv6 ICMP ND advertisment
>         12/86dd,                // [5] IPv6 packet
>     -)                  // [6] Unsupported protocol;
>      out0 :: Queue(200) ->  to_device0 :: ToDevice(eth2);
> 
>     // IPv4
>      c0[0] -> Paint(1) ->  ip4;
>      c0[1] -> ARPResponder(10.1.4.3 0:4:23:b7:3f:96) ->  out0;
>      arpq0 :: ARPQuerier(10.1.4.3, 0:4:23:b7:3f:96) ->  out0;
>      c0[2] ->  arpt;
>      arpt[0] -> [1] arpq0;
> 
>     // Discard IPv6
>      c0[5] -> Discard;
>      c0[3] -> Discard;
>      c0[4] -> Discard;
> 
>     // Unknown protocol
>      c0[6] -> Print("eth2 unknown protocol") -> Discard;
> 
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