sonic-swss: Key to check if entry in DB has a no-host-route entry.

[VenkatCisco]

Added a check in NeighOrch::addVoqEncapIndex to validate if the there is a key called "no-host-route" in the DB. If there is one then treat that neighbor entry with SAI_NEIGHBOR_ENTRY_ATTR_NO_HOST_ROUTE.

Justification for this change: required for Disaggregated networking support.

What I did Added a check in NeighOrch::addVoqEncapIndex to validate if the there is a key called "no-host-route" in the DB. If there is one then treat that neighbor entry with SAI_NEIGHBOR_ENTRY_ATTR_NO_HOST_ROUTE.

Why I did it

This is required for identifying if the route for remote neighbor needs to be differently for diaggregated network topology

How I verified it

What I did

Added a check in NeighOrch::addVoqEncapIndex to validate if the there is a key called "no-host-route" in the DB. If there is one then treat that neighbor entry with SAI_NEIGHBOR_ENTRY_ATTR_NO_HOST_ROUTE

Why I did it

This is required for DSF static programming

How I verified it

}, "SYSTEM_NEIGH|Leaf2|Asic0|Ethernet256|77.0.0.1": { "expireat": 1710262652.593254, "ttl": -0.001, "type": "hash", "value": { "encap_index": "1168", "neigh": "f8:e5:7e:61:60:02" } }, "SYSTEM_NEIGH|Leaf3|Asic0|Ethernet256|78.0.0.1": { "expireat": 1710262652.5932121, "ttl": -0.001, "type": "hash", "value": { "encap_index": "1216", "neigh": "f8:e5:7e:61:60:03" } }, "SYSTEM_NEIGH|Leaf3|Asic0|Ethernet256|fc00:78::1": { "expireat": 1710262652.5932224, "ttl": -0.001, "type": "hash", "value": { "encap_index": "1416", "neigh": "f8:e5:7e:61:60:03" } } } root@Leaf3:/home/cisco# show chassis system-neighbors System Port Interface Neighbor MAC Encap Index

Leaf0|Asic0|Ethernet256 75.0.0.1 f8:e5:7e:61:60:00 1072 Leaf1|Asic0|Ethernet256 76.0.0.1 f8:e5:7e:61:60:01 1120 Leaf2|Asic0|Ethernet256 77.0.0.1 f8:e5:7e:61:60:02 1168 Leaf3|Asic0|Ethernet256 78.0.0.1 f8:e5:7e:61:60:03 1216 Leaf3|Asic0|Ethernet256 fc00:78::1 f8:e5:7e:61:60:03 1416

logs: syslog.20.gz:Mar 9 07:00:56.006094 Leaf3 INFO config_system_neigh.sh[3731]: Executing: sonic-db-cli CHASSIS_APP_DB hset "SYSTEM_NEIGH|Leaf0|Asic0|Ethernet256|75.0.0.1" "encap_index" "1072" "neigh" "f8:e5:7e:61:60:00" "no-host-route" "null" syslog.20.gz:Mar 9 07:00:56.021578 Leaf3 INFO config_system_neigh.sh[3731]: Executing: sonic-db-cli CHASSIS_APP_DB hset "SYSTEM_NEIGH|Leaf1|Asic0|Ethernet256|76.0.0.1" "encap_index" "1120" "neigh" "f8:e5:7e:61:60:01" "no-host-route" "null" syslog.20.gz:Mar 9 07:00:56.037819 Leaf3 INFO config_system_neigh.sh[3731]: Executing: sonic-db-cli CHASSIS_APP_DB hset "SYSTEM_NEIGH|Leaf2|Asic0|Ethernet256|77.0.0.1" "encap_index" "1168" "neigh" "f8:e5:7e:61:60:02" "no-host-route" "null" syslog.20.gz:Mar 9 07:00:56.054838 Leaf3 INFO config_system_neigh.sh[3731]: Executing: sonic-db-cli CHASSIS_APP_DB hset "SYSTEM_NEIGH|Leaf3|Asic0|Ethernet256|78.0.0.1" "encap_index" "1216" "neigh" "f8:e5:7e:61:60:03" "no-host-route" "null" syslog.20.gz:Mar 9 07:01:11.757862 Leaf3 NOTICE syncd#syncd#syncd: :- saiLoglevelNotify: Setting SAI loglevel SAI_LOG_LEVEL_NOTICE on SAI_API_NEIGHBOR syslog.20.gz:Mar 9 07:45:56.063693 Leaf3 NOTICE syncd#syncd#syncd: :- saiLoglevelNotify: Setting SAI loglevel SAI_LOG_LEVEL_NOTICE on SAI_API_NEIGHBOR syslog.20.gz:Mar 9 07:57:58.089596 Leaf3 NOTICE syncd#syncd#syncd: :- saiLoglevelNotify: Setting SAI loglevel SAI_LOG_LEVEL_NOTICE on SAI_API_NEIGHBOR

Details if related