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(parent: d7c8186) | patch
Improve the ECN negotiation when the TCP SYN-cache is used by making
authorMichael Tuexen <tuexen@FreeBSD.org>
Sat, 8 Aug 2020 19:39:38 +0000 (19:39 +0000)
committerMichael Tuexen <tuexen@FreeBSD.org>
Sat, 8 Aug 2020 19:39:38 +0000 (19:39 +0000)
commit1bea15e601ad4fae5c2912758715fcaa08aa2404
treea209bc9faea9edea052f11a120e111b03f34a2b7tree | snapshot
parentd7c8186d675306c61b2f42376ad0dcc6813312aacommit | diff
Improve the ECN negotiation when the TCP SYN-cache is used by making
sure that
* ECN is disabled if the client sends an non-ECN-setup SYN segment.
* ECN is disabled is the ECN-setup SYN-ACK segment is retransmitted more
  than net.inet.tcp.ecn.maxretries times.

Reviewed by: rscheff
MFC after: 1 week
Sponsored by: Netflix, Inc.
Differential Revision: https://reviews.freebsd.org/D26008
sys/netinet/tcp_syncache.c diff | blob | history
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