[EVPN MH][FRR][libnl3][frrcfgd] add support for EVPN MH feature

[yfedoriachenko]

Why I did it

This is a part of implementation of EVPN MH feature

How I did it

• add patch to FRR, so that it considers team interfaces as LAGs
• add new tables frrcfgd to support new config tables for EVPN MH
• backport commits to libnl for handling RTM_NEXTHOP events (generated by "ip nexthop" commands)
• add handling of br_port_update events in FRR fpm to send split horizon and DF election information to fpmsyncd

Main PR

sonic-net/sonic-swss#3226

How to verify it

1. frrcfgd changes were tested using following commands:

   yaroslav_fedoriachenko@Leaf-1:~$ vtysh -c "sh ru" | grep "evpn mh"
   yaroslav_fedoriachenko@Leaf-1:~$ redis-cli -n 4 HSET "EVPN_MH_GLOBAL|default" startup_delay 15 mac_holdtime 25 neigh_holdtime 35
   (integer) 3
   yaroslav_fedoriachenko@Leaf-1:~$ vtysh -c "sh ru" | grep "evpn mh"
   evpn mh mac-holdtime 25
   evpn mh neigh-holdtime 35
   evpn mh startup-delay 15
   yaroslav_fedoriachenko@Leaf-1:~$ redis-cli -n 4 HSET "EVPN_ETHERNET_SEGMENT|PortChannel0" df-preference 15
   (integer) 1
   yaroslav_fedoriachenko@Leaf-1:~$ vtysh -c "sh ru" | grep "evpn mh"
   evpn mh mac-holdtime 25
   evpn mh neigh-holdtime 35
   evpn mh startup-delay 15
    evpn mh es-df-pref 15
   yaroslav_fedoriachenko@Leaf-1:~$ redis-cli -n 4 HSET "EVPN_ETHERNET_SEGMENT|PortChannel0" type3_local_discriminator 25 type3_system_mac 11:22:33:44:55:66
   (integer) 2
   yaroslav_fedoriachenko@Leaf-1:~$ vtysh -c "sh ru" | grep "evpn mh"
   evpn mh mac-holdtime 25
   evpn mh neigh-holdtime 35
   evpn mh startup-delay 15
    evpn mh es-df-pref 15
    evpn mh es-id 25
    evpn mh es-sys-mac 11:22:33:44:55:66
   yaroslav_fedoriachenko@Leaf-1:~$ redis-cli -n 4 HSET "EVPN_ETHERNET_SEGMENT|Ethernet0" mh-uplink true
   (integer) 1
   yaroslav_fedoriachenko@Leaf-1:~$ vtysh -c "sh ru" | grep "evpn mh"
   evpn mh mac-holdtime 25
   evpn mh neigh-holdtime 35
   evpn mh startup-delay 15
    evpn mh uplink
    evpn mh es-df-pref 15
    evpn mh es-id 25
    evpn mh es-sys-mac 11:22:33:44:55:66
   yaroslav_fedoriachenko@Leaf-1:~$ sudo config save -y
   Running command: /usr/local/bin/sonic-cfggen -d --print-data > /etc/sonic/config_db.json
   yaroslav_fedoriachenko@Leaf-1:~$ sudo reboot
   
   ...
   
   yaroslav_fedoriachenko@Leaf-1:~$ vtysh -c "sh ru" | grep "evpn mh"
   evpn mh mac-holdtime 25
   evpn mh neigh-holdtime 35
   evpn mh startup-delay 15
    evpn mh uplink
    evpn mh es-df-pref 15
    evpn mh es-id 25
    evpn mh es-sys-mac 11:22:33:44:55:66
   yaroslav_fedoriachenko@Leaf-1:~$ redis-cli -n 4 HDEL "EVPN_ETHERNET_SEGMENT|PortChannel0" type3_local_discriminator 25 type3_system_mac 11:22:33:44:55:66
   (integer) 2
   yaroslav_fedoriachenko@Leaf-1:~$ vtysh -c "sh ru" | grep "evpn mh"
   evpn mh mac-holdtime 25
   evpn mh neigh-holdtime 35
   evpn mh startup-delay 15
    evpn mh uplink
    evpn mh es-df-pref 15
   yaroslav_fedoriachenko@Leaf-1:~$ redis-cli -n 4 HSET "EVPN_ETHERNET_SEGMENT|PortChannel0" type0_operator_config 00:11:22:33:44:55:66:01:02:03
   (integer) 1
   yaroslav_fedoriachenko@Leaf-1:~$ vtysh -c "sh ru" | grep "evpn mh"
   evpn mh mac-holdtime 25
   evpn mh neigh-holdtime 35
   evpn mh startup-delay 15
    evpn mh uplink
    evpn mh es-df-pref 15
    evpn mh es-id 00:11:22:33:44:55:66:01:02:03
   yaroslav_fedoriachenko@Leaf-1:~$ sudo config save -y
   Running command: /usr/local/bin/sonic-cfggen -d --print-data > /etc/sonic/config_db.json
   yaroslav_fedoriachenko@Leaf-1:~$ sudo reboot
   
   ...
   
   yaroslav_fedoriachenko@Leaf-1:~$ vtysh -c "sh ru" | grep "evpn mh"
   evpn mh mac-holdtime 25
   evpn mh neigh-holdtime 35
   evpn mh startup-delay 15
    evpn mh uplink
    evpn mh es-df-pref 15
    evpn mh es-id 00:11:22:33:44:55:66:01:02:03
   
   

2. FRR patch to add team is verified to work by running a evpn mh command inside vtysh for interface PortChannel, for example vtysh -c "configure" -c "interface PortChannel0" -c "evpn mh es-df-pref 1".
3. FRR patch to fpm is tested in main PR in sonic-swss ([EVPN MH][FRR][libnl3][zebra][fpmsyncd][fdbsyncd][orchagent] add support for EVPN MH feature sonic-swss#3226)
4. libnl patches are directly cherry-picked from libnl repo with minimal modification due to backporting and were verified to work in python tests in aforementioned sonic-swss PR

Details

Is this PR fine or does it have to be multiple smaller PRs?

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: yfedoriachenko / name: YaroslavFedoriachenkoGL (fbffc59, 8a8e26f, 04a1543)
• ✅ login: oleksii-kolevatov / name: OleksiiKolevatovGL (74d01ac)