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Differential D16503

Send consistent SEG.WIN when sending from the timewait code path
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Authored by tuexen on Jul 29 2018, 10:17 PM.
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Reviewers
lstewart
jason_eggnet.com
rrs
Group Reviewers
transport
Commits
rS336937: Send consistent SEG.WIN when using timewait codepath for TCP.
Summary

When creating a timewait entry, the last sent rcv window is stored. However, it is computed in a different way than in the main code path. This results in inconsistencies. These are fixed by using the same code as in tcp_output().

Test Plan

Run the attached packetdrill test.

lastack.pkt2 KBDownload

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Repository
rS FreeBSD src repository - subversion
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head/
sys/
netinet/
16 lines

Diff 46048

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head/sys/netinet/tcp_timewait.c

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