82576EB Datasheet, PDF (30/34 Pages) Intel Corporation – LAN Access Division

Errata - Intel^® 82576EB GbE Controller
1 will cause the packet to be dropped but for the wrong reason (late packet instead of
bad tagged).
Implication: These packets are not processed correctly and may cause statistic differences (when
compared to specification requirements).
Workaround: None.
Status:
A1, A2 NoFix
▼ Return to Summary
34. MACSec: SA Creation Doesn’t Clear Frame Verification Statistics
Problem:
SA (Secruity Association) creation doesn’t zero frame verification statistics. The creation
of the RX SA should reset the following statistics (per SA):
1.) InPktsOK (LSECRXOK 0x4360-0x4364)
2.) InPktsInvalid (LSECRXINV 0x4380-0x4384)
3.) InPktsNotValid(LSECRXNV 0x43A0-0x43A4)
4.) InPktsNotUsingSA(LSECRXNUSA 0x43C0)
5.) InPktsUnusedSA (LSECRXUNSA 0x43D0)
Implication: Statistics are not cleared out as expected by the specification.
Workaround: Read frame verification statistics before validating the SA (reading clears the statistics).
Status:
A1, A2 NoFix
▼ Return to Summary
35. MACSec: LSECRXNUSA and LSECRXUNSA Statistic Counters Not Provided
Problem:
InPktsNotUsingSA (LSECRXNUSA) and InPktsUnusedSA (LSECRXUNSA) should be defined
per SA. In this implementation, these are counted in one counter.
Implication: Statistics defined in the MACSec standard cannot be provided.
Workaround: None.
Status:
A1, A2 NoFix
▼ Return to Summary
36. MACSec: When MC Is MACSec owner, MAC Reset Still Clears Keys
Problem:
When MC is the owner of the MACSec and a MAC reset occurs, MACSec settings are lost.
A MAC reset (CTRL.RST) can clear out the MACSec - 82576 FW will give an indication to
MC [using the MACSec AEN (NC-SI) or in the MACSec Parameters and MACSec Status
Indication (SMBus)] when this occurs so the MC can reconfigure the keys.
Implication: MAC reset can clear the MACSec setting at anytime.
Workaround: MC must recognize the indication from the FW and reconfigure the keys when this
occurs.
Intel^® 82576EB GbE Controller
Specification Update
30
Revision: 2.85
September 2012