I’m trying to get flow-mode tunneling working with native GRE tunneling. I have a 2 port switch, access and trunk (tunnel) with the 2 ports connected to test gear. The problem is that the trunk-to-access direction is not working. It looks like packets are egressing from b1 on port NORMAL, where they disappear.
When I configure port-mode tunneling, everything works and I notice that b1 does not egress to port NORMAL but ingresses directly to b0 from b1. Another observation is that when it is working for port mode tunneling, the call to “tnl_port_should_receive” in function “xlate_lookup_ofproto_” sometimes return “true”. For flow mode tunneling, this function always returns “false”. Here is my flow mode configuration. I was wondering if you could spot anything obviously wrong or if this is a known issue. ## Flow-based GRE Tunnel ## Access Side ## ovs-vsctl add-br b0 -- set bridge b0 datapath_type=netdev ovs-vsctl add-port b0 gre0 -- set Interface gre0 type=gre options:remote_ip=flow options:key=flow ovs-vsctl add-port b0 dpdk0 -- set Interface dpdk0 type=dpdk ovs-vsctl set Interface gre0 ofport_request=1 ovs-vsctl set Interface dpdk0 ofport_request=2 ifconfig b0 10.10.20.40 netmask 255.255.255.0 ## Output Bridge: ## Tunnel Side ## ovs-vsctl add-br b1 -- set bridge b1 datapath_type=netdev ovs-vsctl add-port b1 dpdk1 -- set Interface dpdk1 type=dpdk ovs-vsctl set Interface dpdk1 ofport_request=1 ifconfig b1 10.10.10.40 netmask 255.255.255.0 ## Set up flows: ## Access ## # in dpdk0, out gre ovs-ofctl add-flow b0 "in_port=2 action=set_tunnel:123,set_field:10.10.10.2->tun_dst,output:NORMAL" # in gre, out dpdk0 ovs-ofctl add-flow b0 "in_port=1,tun_src=10.10.10.2,tun_id=123,action=output:2" ## Tunnel ## # in linux, out dpdk2 ovs-ofctl add-flow b1 in_port=LOCAL,action=output:1 # in dpdk2, out linux ovs-ofctl add-flow b1 in_port=1,action=output:NORMAL Best regards and thanks, David This email and attachments may contain privileged or confidential information intended only for the addressee(s) indicated. The sender does not waive any of its rights, privileges or protections respecting this information. If you are not the named addressee, an employee, or agent responsible for sending this message to the named addressee (or this message was received by mistake), you are not authorized to read, print, retain, copy or disseminate this message or any part of it. If received in error, please notify us immediately by e-mail, discard any paper copies and delete all electronic files of the email. Computer viruses can be transmitted via email. The recipient should check this email and any attachments for viruses. Email transmission cannot be guaranteed to be secured or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender accepts no liability for any damage caused by any transmitted viruses or errors or omissions in the contents of this message. Overture Networks, Inc. 637 Davis Drive, Morrisville, NC USA 27560 www.overturenetworks.com
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