This is to pick up BRCM SAI 4.3.5.1-6 fixes which contains the following fixes:
1. CS00012213351 SONIC-50679: [TH, TH2] Warm-reboot from 3.5 to 4.3 fails due to null objects discovered
2. CS00012182162: SONIC-49805 TD3 MMU config profile optimization changes
3. CS00012210826:SONIC-50205/760c60fc: Should read MMU_INTFI_MMU_PORT_TO_MMU_QUEUES_FC_BKP for TH3
Preliminary tests looks fine. BGP neighbors were all up with proper routes programmed
interfaces are all up
Manually ran the following test cases on 7050CX3 (TD3) T0 DUT and all passed:
```
fib/test_fib.py
vxlan/test_vxlan_decap.py
fdb/test_fdb.py
decap/test_decap.py
ipfwd/test_dip_sip.py
ipfwd/test_dir_bcast.py
acl/test_acl.py
vlan/test_vlan.py
platform_tests/test_reboot.py
```
This is to pick up BRCM SAI 4.3.5.1 which contains the following fix:
CS00012201406: [4.3.3.9] SAI_STATUS_FAILURE on FDB flush after all ports flapped
Preliminary tests looks fine. BGP neighbors were all up with proper routes programmed
interfaces are all up
Manually ran the following test cases on z9332f (TH3) T0 DUT and all passed:
```
ipfwd/test_dir_bcast.py
fib/test_fib.py
```
Manually ran the following test cases on S6100 (TH) and all passed:
```
ipfwd/test_dir_bcast.py
fdb/test_fdb.py
```
Why I did it
There were two regression issues introduced by BRCM SAI 4.3.3.8:
CS00012196056 [4.3.3.8][WARMBOOT] syncd[2584]: segfault at 5616ad6c3d80 ip 00007f61e0c6bc65 sp 00007fff0c5a7a90 error 4 in libsai.so.1.0[7f61e0a95000+3cd8000]
CS00012195956 [4.3.3.8] [TD3]Syncd Crash at brcm_sai_tnl_mp_create_tunnel()
How I did it
Patch for CS00012195956 from BRCM was validated to have addressed the tunnel creation issue.
Temporary worked around the issue by commenting out a portion of questionable code in BRCM SAI that seems to be the root cause of CS00012196056 .
How to verify it
See the BRCM cases for details.
Why I did it
This SAI change is to Enable TD2 platforms to also be able to handle VFP-based sub-interfaces.
This is the feature that is also needed for TD2 platforms.
How to verify it
Guohan and Team has validated this feature change on TD2 platforms
