LACP upgrade - 12: updating member port selection handler

Updated #member-port #selection #handler in #LACP module. This handler checks and #verifies whether the #peer #partner and the #peer #port #attributes are not changing. The peer port info is recorded while LACP PDU is received. While there is an #administrative #configuration change from the peer side or a #physical #connectivity #changes happens from the remote side, it has to be decided whether the #member-port can still be part of #aggregation or not. The handler reads out the attributes passed in the LACP PDU and compare them against the peer port info recorded earlier. When the attributes differ in the PDU the member-port is marked as not part of the aggregation and #member-port #selection #procedures are executed.

#LACP update 25 ...
[commit d9276967f49544b9bdec8921911edf9f52286aa3] (https://github.com/nes-repo/NES-Open-Switch/commit/d9276967f49544b9bdec8921911edf9f52286aa3)

LACP upgrade - 7: updating the received LACP PDU handler

Updated incoming #LACP #PDU #handler in LACP module. The PDU handler has been updated to use native member port structures. The #peer #partner #data-structures on the particular member port are updated and internal LACP state on the port is updated in the handler. The routine to update the peer partner data-structures with the #administratively configured #default #values has been updated to remove references to the augmented data-structures. The #partner #info #expire #handler also has been updated in the same lines.

#LACP update 20 ...
[commit 1e4f29e70604d243bb4d80becf1e76e91007504b] (https://github.com/nes-repo/NES-Open-Switch/commit/1e4f29e70604d243bb4d80becf1e76e91007504b)

LACP upgrade - 5: updating aggregator port state update handler

Updated #aggregator #port #status #handler in #LACP module. The data structure has been updated to use the new updated structure. This routine #updates the aggregator status as part of the #administrative or #operational #changes. The #LAG module uses this to #convey the aggregator #status #change to LACP module. When the aggregator port status changes to DOWN current aggregator selection is marked to be cleared. The remote information is marked as expired. This will cause the remote peer information to be gathered fresh again on port UP change. When port state comes as UP, the peer synchronization is marked as lost and expired and a timer is set to start operation on this port again.

#LACP update 18 ...
[commit 8eb97ea8c7dfb9c391f358e309df5bdc1f86b976] (https://github.com/nes-repo/NES-Open-Switch/commit/8eb97ea8c7dfb9c391f358e309df5bdc1f86b976)