[ovs-discuss] handler threads

Chandran, Sugesh sugesh.chandran at intel.com
Tue Aug 16 08:37:17 UTC 2016


Hi Dev team,

Can anyone help me out in the following queries? 
Any help is much appreciated.

Regards
_Sugesh


> -----Original Message-----
> From: discuss [mailto:discuss-bounces at openvswitch.org] On Behalf Of
> Chandran, Sugesh
> Sent: Thursday, August 11, 2016 4:31 PM
> To: Joe Stringer <joe at ovn.org>
> Cc: discuss at openvswitch.org
> Subject: [ovs-discuss] handler threads
> 
> 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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