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The TCP RACK stack need to verify SEG.ACK first when in SYS-SENT state

Authored by tuexen on Nov 18 2018, 12:31 PM.



According to RFC 793, page 66, a TCP need to check SEG.ACK first when handling a segment in SYN-SENT state. This patch enforces this for the TCP RACK stack.

Test Plan

Ensure all tests from rcv-syn-ack-syn-sent pass after setting

sysctl net.inet.tcp.functions_default=rack

Diff Detail

rS FreeBSD src repository
Automatic diff as part of commit; lint not applicable.
Automatic diff as part of commit; unit tests not applicable.

Event Timeline

tuexen created this revision.Nov 18 2018, 12:31 PM
Herald added a subscriber: imp. · View Herald Transcript
rrs accepted this revision.Nov 20 2018, 1:07 PM
This revision is now accepted and ready to land.Nov 20 2018, 1:07 PM
This revision was automatically updated to reflect the committed changes.