Hi, Currently in OvS if we hit "Table-miss" rules (associated with Controller action) then we send PACKET_IN message to controller with reason as OFPR_NO_MATCH.
“Table-miss” rule is one whose priority is 0 and its catch all rule. But if we hit same "Table-miss" rule after executing group entry we will send the reason as OFPR_ACTION (for OF1.3 and below) and OFPR_GROUP (for OF1.4 and above). This is because once we execute group entry we set ctx->in_group and later when we hit the "Table-miss" rule, Since ctx->in_group is set we send reason as OFPR_ACTION (for OF1.3) and OFPR_GROUP (for OF1.4 and above). Since in the packet_in message we are sending the table-id of the corresponding “Table-miss” rule Shouldn’t we send the reason for packet-in as OFPR_NO_MATCH ( the reason appropriate to the Corresponding rule?) For eg: for the following pipeline we will send the reason as OFPR_ACTION even if we hit The “Table-miss” rule. cookie=0x8000000, duration=761.189s, table=0, n_packets=1401, n_bytes=67954, priority=4,in_port=9,vlan_tci=0x0000/0x1fff actions=write_metadata:0x67870000000000/0xffffff0000000001,goto_table:17 cookie=0x6800001, duration=768.848s, table=17, n_packets=1418, n_bytes=68776, priority=10,metadata=0x67870000000000/0xffffff0000000000 actions=write_metadata:0xe067870000000000/0xfffffffffffffffe,goto_table:60 cookie=0x6800000, duration=24944.312s, table=60, n_packets=58244, n_bytes=2519520, priority=0 actions=resubmit(,17) cookie=0x8040000, duration=785.733s, table=17, n_packets=1450, n_bytes=69724, priority=10,metadata=0xe067870000000000/0xffffff0000000000 actions=write_metadata:0x67871d4d000000/0xfffffffffffffffe,goto_table:43 cookie=0x822002d, duration=24960.795s, table=43, n_packets=53097, n_bytes=2230074, priority=100,arp,arp_op=1 actions=group:6000 group_id=6000,type=all,bucket=actions=CONTROLLER:65535,bucket=actions=resubmit(,48),bucket=actions=resubmit(,81) cookie=0x8500000, duration=24977.323s, table=48, n_packets=58309, n_bytes=2522634, priority=0 actions=resubmit(,49),resubmit(,50) cookie=0x8050000, duration=24984.679s, table=50, n_packets=6, n_bytes=264, priority=0 actions=CONTROLLER:65535,learn(table=49,hard_timeout=10,priority=0,cookie=0x8600000,NXM_OF_ETH_SRC[],load:0x1->NXM_NX_REG4[0..7]),goto_table:51 (Note that Table50 entry is a “Table-miss” rule). Currently we are sending table_id as 50 and packet_in reason as OFPR_ACTION. Shouldn’t we send packet_in reason as OFPR_NO_MATCH in this case? Thanks Rohith
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