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Differential D18034

The TCP RACK stack need to verify SEG.ACK first when in SYS-SENT state
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Authored by tuexen on Nov 18 2018, 12:31 PM.
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Reviewers
rrs
lstewart
jason_eggnet.com
Group Reviewers
transport
Commits
rS341501: MFC r340782:
rS340782: A TCP stack is required to check SEG.ACK first, when processing a
Summary

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

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

Diff 50930

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head/sys/netinet/tcp_stacks/rack.c

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