Hi Team, We are working on the implementation on eviction mechanism on basis of importance as per openflow specs-1.4. We have added importance parameter in the flow entry.
Following is our understanding for Delete Flow mechanism: We have studied the code and have found that OFPFC_DELETE_STRICT specifies only two fields on which flow is deleted which are OUT_PORT & PRIORITY i.e. flows are deleted only on the basis of out_port and priority specified in the del-flows command. Please confirm whether there will be any change in "ovs-ofctl del-flows [--strict] ..... " command by specifying importance in it as it is not specified anywhere in specs that deletion of flows should be done on basis of importance and its significance is only to evict flows. Following is our understanding for Mod Flow mechanism: For "ovs-ofctl mod-flows ... " we think that their will be no change with respect to "importance". Openflow-specs 1.4 specifies on page 36 that in both cases (with strict and without strict) their will be change only in instructions field. Fields of hard_timeout, idle_timeout, cookies, flags and counters & also priority remains unchanged. Also when we were trying to modify the flows, we were able to change the cookie value and action using the mod-flows command. Whereas we were not able to modify flow for priority or timeout. Query : As per our understanding of code and open flow specs 1.4 we think that, mod-flows..... & del-flows.... command will not change after implementation of importance field in the flow, as significance of IMPORTANCE field is only for eviction mechanism. Kindly confirm the same. Regards Shashwat Srivastava Mailto: shashwat.srivast...@tcs.com Website: http://www.tcs.com ____________________________________________ Experience certainty. IT Services Business Solutions Consulting ____________________________________________ =====-----=====-----===== Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
