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tbarbette avatar tbarbette commented on June 10, 2024

You need to say how all the ToDevice should orchestrate the query of the 3 paths. For instance with a RoundRobinSched.

from click.

john-smith-77 avatar john-smith-77 commented on June 10, 2024

I tried with the dpdk device and add scheduler but I got this error

‘P1 :: PrioSched’ pull output 0 connected to ‘out0 :: ToDPDKDevice’ push input 0

modified code:

FromDPDKDevice(0) -> c0 :: Classifier(12/0806 20/0001,
                                     12/0806 20/0002,
                                     12/0800,
                                     -);

out0 :: ToDPDKDevice(1);

outtcp :: Queue(1024);
outudp :: Queue(1024);
outoth :: Queue(1024);

P1 :: PrioSched;
outtcp, outoth, outudp -> P1;
P1 -> out0;

// ARP request need to be answered, obviously
c0[0]
    -> Print("ARPResponder")
    -> ARPResponder(10.0.0.11 00:0c:29:64:45:48)
    -> outoth;

// ARP responses are handed to Linux
c0[1]
    -> Print("ToHost")
    -> Discard;
//    -> ToHost();

// Non-IP packets are dropped
c0[3]
    -> Print("Discard")
    -> Discard;

// Other IP packets. Split on UDP, TCP and rest
c0[2]
    -> Print("IP")
    -> Strip(14)
    -> CheckIPHeader()
    -> c1 :: Classifier(9/17, 9/06, -);


// TCP packets
c1[1] -> Print(TCP) -> outtcp;

// UDP packets
c1[0]
    -> Print(UDP)
    -> outudp;

// non-UDP and non-TCP packets
c1[2] -> Print(UNKNOWN) -> outoth;

and also I used round-robin

R1 :: RoundRobinSched;
P1 :: PrioSched;
outtcp, outoth, outudp -> R1;
R1 -> P1;

//outtcp, outudp, outoth -> P1;
P1 -> out0;

from click.

tbarbette avatar tbarbette commented on June 10, 2024

ToDPDKDevice is not a pull element, it's a push element, so you need push element before. RoundRobinSwitch is the "push" equivalent of RoundRobinSched. See page 18 of http://www-soc.lip6.fr/~genius/kohler-thesis.pdf for more information :)

from click.

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