Hi Everyone,
I am working on an element which supports TIA-1039(QoS) signalling.
As a part of it I need to do per-flow traffic policing. I am able to design a
per-flow policer using Virtual scheduling algorithm. It decides that cetain
packets(which are non corming to policing rate) sholud be discared. Strangely,
I am facing problems for discarding non - conforming packets. I used p->kill()
and return NULL . I am getting strange results. The number of packets which
enter the run-time routine simple_action(packet *) if I don't use the 'packet
discarding' is different from the number of packets which enter that routine in
the case I use the discarding for non conforming packets. What I mean to say
is, using p->kill() OR return NULL (for some packets) is reducing the the
number of packets which enter the run-time routine ,simple_action(Packet *).
The code is such that every packet enters the simple_action(packet *) routine
which contains the code for per-flow policing and
dropping the non-conforming packets. I do not understand how discarding
certain packets in the router can effect the rate of emission. I used i-perf
traffic to test the element. I am not sure if I am using the correct method of
discaring packets.I need your quick help as the dead line for completing this
policer is very near.
Regards,
Krishna Pradeep.
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