[Sorry - previous mail had no subject] Hello,
We have been working with OVS 2.3.0 for OF 1.3, and we have some questions: -------- Possible bug: ovs-ofctl display of actions Here is a table-miss-entry which is supposed to match everything. There are no instructions associated with this entry. cookie=0x0, duration=31.700s, table=5, n_packets=7, n_bytes=686, priority=0 actions=drop According to the OF1.3 spec, when there are no goto-instructions, pipeline processing stops, and the action-set should get executed. We do believe this is what is happening in the switch - however the display "actions=drop" is misleading, and possibly a holdover from OF1.0 behavior, when no actions meant drop. Perhaps "actions=execute-action-set" may better reflect OF1.3 behavior when there are no instructions. ---------- Possible bug: group stats don't update Here is a group definition: group_id=536870916,type=indirect,bucket=weight:0,actions=dec_ttl,set_field:00:00:01:01:01:80->eth_src,output:4 Here are the stats: group_id=536870916,duration=202.091s,ref_count=0,packet_count=0,byte_count=0,bucket0:packet_count=0,byte_count=0 None of the counts go up, yet I know traffic is being processed by this group, as there is no other place where I have specified that packets should go out of port 4. ------------- Possible bug: group doing MPLS stuff doesn't work Here is the flow that points to the group (as part of the actions written to an action-set): cookie=0x0, duration=31.703s, table=2, n_packets=7, n_bytes=686, priority=65520,ip,nw_dst=7.7.7.0/24 actions=write_actions(push_mpls:0x8847,set_field:103->mpls_label,group:2684354566),goto_table:5 In table 5, the packets hit the table-miss-entry, which has no instructions, so the action-set gets executed. Here is the group definition: group_id=2684354566,type=indirect,bucket=weight:0,actions=dec_mpls_ttl,set_field:00:00:01:01:01:80->eth_src,set_field:00:00:02:02:02:80->eth_dst,output:6 Here are the error messages we see in the logs: 2014-08-29T23:58:53.367Z|00001|dpif(handler358)|WARN|system@ovs-system: failed to put[create] (Invalid argument) dp_hash(0/0),recirc_id(0),skb_priority(0),in_port(5),skb_mark(0/0),eth(src=00:00:00:00:02:01,dst=00:00:01:01:01:80),eth_type(0x0800),ipv4(src= 10.0.2.1/255.255.255.255,dst=7.7.7.7/255.255.255.255,proto=1/0xff,tos=0/0xfc,ttl=64/0xff,frag=no/0xff),icmp(type=8,code=0), actions:set(eth(src=00:00:01:01:01:80,dst=00:00:02:02:02:80)),push_mpls(label=103,tc=0,ttl=63,bos=1,eth_type=0x8847),7 2014-08-29T23:58:53.367Z|00002|dpif(handler358)|WARN|system@ovs-system: execute set(eth(src=00:00:01:01:01:80,dst=00:00:02:02:02:80)),push_mpls(label=103,tc=0,ttl=63,bos=1,eth_type=0x8847),7 failed (Invalid argument) on packet icmp,metadata=0,in_port=0,vlan_tci=0x0000,dl_src=00:00:00:00:02:01,dl_dst=00:00:01:01:01:80,nw_src=10.0.2.1,nw_dst=7.7.7.7,nw_tos=0,nw_ecn=0,nw_ttl=64,icmp_type=8,icmp_code=0 ----------- Please let us know if this makes sense Thanks Saurav
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