Hi,
I am looking at the data-path flow insertion in OVS. Specifically the upcall 
handling in handler threads. According to my understanding, for every new 
packet-in, the handler threads process the upcall and insert the corresponding 
rule in dpif.
And its done in "udpif_upcall_handler" --> 
"recv_upcalls"(ofproto-dpif-upcall.c).

My questions are
1) Is it the place where the upcall handling really happening?
2) When I try to debug the handler with gdb, "recv_upcalls" is not called for 
the new packet in/flow insert (Please note the number of handler and 
revalidator threads are set to 1)
3) How can I adjust the timeout for revalidator and handler to debug the 
threads with gdb. Sometimes the threads are crashing because of it.



Regards
_Sugesh

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