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 - 10: updating LACP PDU partner info handler

Updated the LACP #PDU #handler in #LACP module. This handler will #process the #PDU while #received on port. The #peer #partner #info of the received port is #updated from the info received in the LACP PDU. The info in the PDU is checked against the actor port specific info to #decide whether the #peer port is in #sync with the received port. The partner info like oper-port, oper-priority, oper-system-id, oper-system-priority, oper-key and oper-stat are populated according to the values received from LDU. The actor specific info like port, port-priority, system-id, system-priority and oper-key are cross checked with the info in PDU to decide whether synchronization has been attained with the peer port.

#LACP update 23 ...
[commit 4b8005f9df419c5b8f573ca219af71cc45c67a10] (https://github.com/nes-repo/NES-Open-Switch/commit/4b8005f9df419c5b8f573ca219af71cc45c67a10)

LACP upgrade - 9: updating LACP PDU transmit handler

Updated the #PDU #transmit #handler in the #LACP module. Whenever updated LACP packets has to be sent to the #peer #partner node, the PDUs are #composed from the internal data-structures in this routine. This routine access the member port data-structures for #creating the individual #TLVs in the LACP PDU. The data-structure references has been corrected to the native member port structures. This routine passes the created PDUs to the appropriate #platform #handlers to send them out of the actual port.

#LACP update 22 ...
[commit 3a79dce87f1ea9b2225c02fea5d33a08a22e7d0b] (https://github.com/nes-repo/NES-Open-Switch/commit/3a79dce87f1ea9b2225c02fea5d33a08a22e7d0b)

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 - 6: updating member port aggregator attach handler

Updated #member #port #attach #handler with the aggregator in the #LACP module. This handler make the #hardware calls to #attach the member port with the selected aggregator and mark the member port state as attached. The #remote #peer is informed of this by sending a #new #LACP #PDU and peer is marked as #synchronized. Later, when peer responds with it's PDU the actual #distribution and #collection operations will be #started for member ports. On attaching the member port with the aggregator the LAG distribution and collection operations will be started in hardware. i.e. The traffic sent out on the aggregator port will be distributed to the member ports and traffic received on the member ports will be collected on to the combined aggregator port.

#LACP update 19 ...
[commit c4c8b0875ce3ca180a3982e850131b58f15a1451] (https://github.com/nes-repo/NES-Open-Switch/commit/c4c8b0875ce3ca180a3982e850131b58f15a1451)

LACP upgrade - 4: updated LACP member port detach handler

Updated #member-port #detach #handler in #LACP module. This handler #detaches the #port from the #hardware #aggregator and #inform the #remote #peer of the same. After this a wait timer is set for later processing. This procedure is executed as part of #protocol #state #changes or as a side effect of a management operation. The aggregator is detached from the member-port in hardware and the peer is informed that local end is not in sync anymore. The #collection and #distribution procedures are #disabled in #hardware and the peer will be known of the same when it receives the updated LACP PDU from local end.

#LACP update 17 ...
[commit 246b3ed5760ddcf5cf0765586213084eff6fd177] (https://github.com/nes-repo/NES-Open-Switch/commit/246b3ed5760ddcf5cf0765586213084eff6fd177)