Hi all,
I noticed something unexpected about the resubmit-table action in openvswitch.
Installing flows as follows will forward packets to port 2. The value 100 is
substituted for in_port and matching occurs as expected:
ovs-ofctl add-flows s1 - << EOF
table=0,actions=resubmit(100,1)
table=1,in_port=100,actions=2
EOF
But, if I try to send the packet to the controller from table 1, the packet-in
messages reports the original in_port (in my case, 1):
ovs-ofctl add-flows s1 - << EOF
table=0,actions=resubmit(100,1)
table=1,in_port=100,actions=controller
EOF
I tried working around this by stuffing the port into metadata, but was
surprised to see that it too returned the original in_port -- not the
substituted one. Note that I'm using apply-actions -- this is not a side
effect of action sets.
ovs-ofctl add-flows s1 - << EOF
table=0,actions=resubmit(100,1)
table=1,in_port=100,actions=move:OXM_OF_IN_PORT[]->OXM_OF_METADATA[0..31],controller
EOF
So... is there any way I can get the port number from the resubmit action up
to the controller? Is there perhaps an alternate register that holds the
substitute port number? I don't mind using non-portable/experimental messages,
but I want to avoid patching the ovs source until I know it is necessary.
Thanks,
Randy
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