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Path MTU discovery hooks for offloaded TCP connections.
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Authored by np on Apr 14 2021, 12:48 AM.

Details

Summary

Notify the TOE driver when when an ICMP type 3 code 4 (Fragmentation
needed and DF set) message is received for an offloaded connection.
This gives the driver an opportunity to lower the path MTU for the
connection and resume transmission, much like what the kernel does for
the connections that it handles.

Diff Detail

Repository
R10 FreeBSD src repository
Lint
Automatic diff as part of commit; lint not applicable.
Unit
Automatic diff as part of commit; unit tests not applicable.

Event Timeline

np requested review of this revision.Apr 14 2021, 12:48 AM
This revision was not accepted when it landed; it landed in state Needs Review.Apr 21 2021, 8:02 PM
This revision was automatically updated to reflect the committed changes.