756dd9c (HEAD -> 201911, origin/201911)
[201911 sonic-swss] Flushing FDB entries before removing BridgePort (#1516)
e3f22ea [201911/portsorch] Add
correct stat list for port buffer drop counters (#1509)

Signed-off-by: Abhishek Dosi <abdosi@microsoft.com>

…onic-net#1516)

**What I did**
I added coded in sonic-swss orchagent to flush the FDB entries corresponding to the bridge port before removing the bridgeport.

**Why I did it**
I did it because if we don't flush the FDB entries before removing the bridge port and try to remove the bridge port, the bridge port removal results in a failure and the port operational status is set to down.

**How I verified it**
I created a VLAN interface, assigned IP address to it and added 2 Ethernet ports as tagged members to it. I waited for the switch to add its neighbors through these bridge ports. Then I removed VLAN membership of one of the bridge ports and see it is successful and the operational state of the port does not go down on removing the VLAN membership.

**Details if related**
flushFDBEntries() function is introduce in orchagent/fdborch.cpp and called from orchagent/portsorch.cpp

Co-authored-by: Madhan Babu <madhan@arc-build-server.mtr.labs.mlnx>

* 553936b (HEAD, origin/master, origin/HEAD, master) route_check: Fix hanging & logging level (sonic-net#1520)
* ed45412 [show][config] add support for setting and displaying switching modes on Y cable (sonic-net#1501)
* bf46638 Handling error scenario of adding port to Vlan which is part of LAG (sonic-net#1516)
* ae39883 Fix bug: show vlan config for vlan with no members (sonic-net#1503)
* 3a482ac [test] Update unit test coverage for command 'show mac' (sonic-net#1504)
* 4a0c010 [config] Disable/enable container monitoring when stopping/starting services (sonic-net#1499)

* 553936b (HEAD, origin/master, origin/HEAD, master) route_check: Fix hanging & logging level (#1520)
* ed45412 [show][config] add support for setting and displaying switching modes on Y cable (#1501)
* bf46638 Handling error scenario of adding port to Vlan which is part of LAG (#1516)
* ae39883 Fix bug: show vlan config for vlan with no members (#1503)
* 3a482ac [test] Update unit test coverage for command 'show mac' (#1504)
* 4a0c010 [config] Disable/enable container monitoring when stopping/starting services (#1499)

utilities:
* 83f068b 2021-03-22 | Handling error scenario of adding port to Vlan which is part of LAG (sonic-net#1516) (HEAD -> 202012) [Sudharsan Dhamal Gopalarathnam]
* 470e8ce 2021-03-24 | Enable PFCWD only on ports where PFC is enabled (sonic-net#1508) [Andriy Yurkiv]
* 09ef2e0 2021-03-22 | [show][config] add support for setting and displaying switching modes on Y cable (sonic-net#1501) [vdahiya12]
* 0d17d37 2021-03-24 | Warmboot script improvements - timeout exec, disable swss autorestart, remove trap (sonic-net#1495) [Vaibhav Hemant Dixit]
* 2718cd8 2021-03-24 | [show] Fix int status of LAGs, configured as Vlan members (sonic-net#1478) [maksymbelei95]
* cc168fb 2021-03-22 | Fix bug: show vlan config for vlan with no members (sonic-net#1503) [allas-nvidia]

swss:
* 5d8d1fb 2021-03-26 | Revert "Revert "[buffermgr] Support maximum port headroom checking (sonic-net#1607)" (sonic-net#1675)" (sonic-net#1682) (HEAD -> 202012) [Prince Sunny]
* f8df1f8 2021-03-26 | [Dynamic Buffer Calc] Enhance the field checking in table handling (sonic-net#1680) [Stephen Sun]
* 6328c9f 2021-03-22 | [MuxOrch] FDB ageout safety check (sonic-net#1674) [Prince Sunny]
* e1d733e 2021-03-21 | reduce severity of log to info in case of flush on non-existing member (sonic-net#1669) [allas-nvidia]

Signed-off-by: Ying Xie <ying.xie@microsoft.com>

utilities:
* 83f068b 2021-03-22 | Handling error scenario of adding port to Vlan which is part of LAG (#1516) (HEAD -> 202012) [Sudharsan Dhamal Gopalarathnam]
* 470e8ce 2021-03-24 | Enable PFCWD only on ports where PFC is enabled (#1508) [Andriy Yurkiv]
* 09ef2e0 2021-03-22 | [show][config] add support for setting and displaying switching modes on Y cable (#1501) [vdahiya12]
* 0d17d37 2021-03-24 | Warmboot script improvements - timeout exec, disable swss autorestart, remove trap (#1495) [Vaibhav Hemant Dixit]
* 2718cd8 2021-03-24 | [show] Fix int status of LAGs, configured as Vlan members (#1478) [maksymbelei95]
* cc168fb 2021-03-22 | Fix bug: show vlan config for vlan with no members (#1503) [allas-nvidia]

swss:
* 5d8d1fb 2021-03-26 | Revert "Revert "[buffermgr] Support maximum port headroom checking (#1607)" (#1675)" (#1682) (HEAD -> 202012) [Prince Sunny]
* f8df1f8 2021-03-26 | [Dynamic Buffer Calc] Enhance the field checking in table handling (#1680) [Stephen Sun]
* 6328c9f 2021-03-22 | [MuxOrch] FDB ageout safety check (#1674) [Prince Sunny]
* e1d733e 2021-03-21 | reduce severity of log to info in case of flush on non-existing member (#1669) [allas-nvidia]

Signed-off-by: Ying Xie <ying.xie@microsoft.com>

…onic-net#1516)

*Handled error scenario when adding a port to Vlan which is already part of a LAG. Added unit test to cover the scenario. This is fix for the bug sonic-net#4456

Signed-off-by: Sudharsan Dhamal Gopalarathnam <sudharsand@nvidia.com>

* 553936b (HEAD, origin/master, origin/HEAD, master) route_check: Fix hanging & logging level (sonic-net#1520)
* ed45412 [show][config] add support for setting and displaying switching modes on Y cable (sonic-net#1501)
* bf46638 Handling error scenario of adding port to Vlan which is part of LAG (sonic-net#1516)
* ae39883 Fix bug: show vlan config for vlan with no members (sonic-net#1503)
* 3a482ac [test] Update unit test coverage for command 'show mac' (sonic-net#1504)
* 4a0c010 [config] Disable/enable container monitoring when stopping/starting services (sonic-net#1499)

* 553936b (HEAD, origin/master, origin/HEAD, master) route_check: Fix hanging & logging level (sonic-net#1520)
* ed45412 [show][config] add support for setting and displaying switching modes on Y cable (sonic-net#1501)
* bf46638 Handling error scenario of adding port to Vlan which is part of LAG (sonic-net#1516)
* ae39883 Fix bug: show vlan config for vlan with no members (sonic-net#1503)
* 3a482ac [test] Update unit test coverage for command 'show mac' (sonic-net#1504)
* 4a0c010 [config] Disable/enable container monitoring when stopping/starting services (sonic-net#1499)