Hi all, Been experimenting with openflow 1.0 for past few months and I'm a bit (err.. majorly) confused with the setting for wildcards when sending a ofp_flow_stats_request message. I can see that if I set the wildcards to 'all' (i.e., 0x3fffff), I will get back all flows no matter what I specify for the other match fields. However, I want to fetch some flows using "in_port" as the filter criteria. I tried to set the last bit to 0 and some in_port value.
match.wildcards = 0x3ffffe (i.e., last bit cleared - aka. in_port is not wildcarded). match.in_port = 3 (or any other value). I kept only a single flow in the OF-switch with in_port = 2. But no matter what value I apply for match.in_port in the ofp_flow_stat_request, I am always able to retrieve this flow. What am I doing wrong ? Here is the actual hexdump (slightly edited with comments) as seen at the reference controller: Starts off with the 8 byte header ... Request = 01 10 00 38 00 18 84 0e <-- header 00 01 00 00 <-- ofp_stat_request fields indicating ofp_flow_stat_request 00 3f ff fe <-- wildcards 00 03 <-- in_port 00 00 00 00 00 01 00 00 00 00 00 02 ff ff 04 00 08 00 0c 06 00 00 0a 00 00 01 0a 00 00 02 04 00 04 00 ff 00 ff ff Response = 01 11 00 6c 00 18 84 0e <- header 00 01 00 00 00 60 01 00 00 3f ff 8f 00 02 01 02 03 04 05 06 07 08 09 01 02 03 00 2d 04 00 08 00 0c 06 00 00 0a 00 03 06 0a 00 00 08 09 c4 08 3d 00 00 0f c8 0e 7b e2 c0 02 8f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08 00 01 ff ff Note that even though I specified in_port as 3 in my request, I got back a flow with in_port of 2. Is the original wildcard value in the flow relevant during a flow stat request ? Thanks for any help I can get. regards Gopal Agrawal _______________________________________________ openflow-discuss mailing list [email protected] https://mailman.stanford.edu/mailman/listinfo/openflow-discuss
