Differential D14937

Fix LRO window comparison
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Authored by jtl on Apr 2 2018, 6:46 PM.

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jason_eggnet.com
gallatin
rrs
rstone
kbowling

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rS331926: r330675 introduced an extra window check in the LRO code to ensure it

Summary

rS330675 (D14540) introduced an extra window check in the LRO code to ensure it captured and reported the highest window advertisement with the same SEQ/ACK. However, the window comparison uses a two's complement comparison rather than a comparison of the absolute values. Because windows use absolute values, rather than two's complement arithmetic (i.e. they don't wrap), compare the absolute values.

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rS FreeBSD src repository - subversion

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Event Timeline

jtl created this revision.Apr 2 2018, 6:46 PM

Herald added a reviewer: transport. · View Herald TranscriptApr 2 2018, 6:46 PM

Herald added a subscriber: imp. · View Herald Transcript

Harbormaster completed remote builds in B15944: Diff 40998.Apr 2 2018, 6:46 PM

kbowling accepted this revision.Apr 3 2018, 6:15 AM

This revision is now accepted and ready to land.Apr 3 2018, 6:15 AM

gallatin accepted this revision.Apr 3 2018, 12:44 PM

Closed by commit rS331926: r330675 introduced an extra window check in the LRO code to ensure it (authored by jtl). · Explain WhyApr 3 2018, 1:54 PM

This revision was automatically updated to reflect the committed changes.

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head/

sys/

netinet/

8 lines

Diff 41018

head/sys/netinet/tcp_seq.h

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