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Path MTU discovery hooks for offloaded TCP connections.

Description

Path MTU discovery hooks for offloaded TCP connections.

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.

Reviewed by: glebius@
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D29755

Details

Provenance
npAuthored on Apr 13 2021, 12:25 AM
Differential Revision
D29755: Path MTU discovery hooks for offloaded TCP connections.
Parents
R10:652908599b6f: Add required checks for unmapped mbufs in ipdivert and ipfw
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