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tcp: bbr.c is non-capable of doing ECN and sets an INP flag to fend off ECN…
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Description

tcp: bbr.c is non-capable of doing ECN and sets an INP flag to fend off ECN however our syncache is not aware of that flag.

We need to make the syncache aware of the flag and not do ECN if its set. Note that this
is not 100% full proof but the best we can do (i.e. its still possible that you can get in a
situation where the peer try's to do ecn).

Reviewed by: tuexen, glebius, rscheff
Sponsored by: Netflix Inc
Differential Revision:https://reviews.freebsd.org/D39672

Details

Provenance
rrsAuthored on Apr 18 2023, 4:21 PM
Reviewer
tuexen
Differential Revision
D39672: tcp: bbr.c is non-capable of doing ECN and sets an INP flag to fend off ECN however our syncache is not aware of that flag.
Parents
rG373b95976bce: netstat: document that PCB information can't be read from corefiles
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sys/
netinet/

rG960985a209f2

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sys/netinet/tcp_syncache.c

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