Differential D20374

Add PAWS check for ACK segments in the syncache code
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Authored by tuexen on May 23 2019, 12:26 PM.

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transport

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rS348415: MFC r348290:
rS348290: When an ACK segment as the third message of the three way handshake is

Summary

When an ACK segment as the third message of the three way handshake is received and support for time stamps was negotiated in the SYN/SYNACK exchange perform the PAWS check and only expand the syn cache entry if the check is passed.
Without this check, endpoints my get stuck on the incomplete queue.