tree 19ba20fa75a0818e094ae3356e82603ff874428c
parent 0000f67ad7f9ab33a6a120a50a66ec067cfabca0
author Mikio Hara <mikioh.mikioh@gmail.com> 1420600214 +0900
committer Mikio Hara <mikioh.mikioh@gmail.com> 1420611855 +0900

icmp: add support for multi-part messages

ICMP extension structures allow a few existing ICMP error messages to
convey extra information for troubleshooting; especially the root cause
of why the original datagram could not be delivered.

This CL adds generic support for ICMP extension stuructures to
DstUnreach, TimeExceeded and ParamProb structs. Specific extensions such
as MPLS label-stack, interface and next-hop identification will be
inplemneted in separate followup CLs.

Change-Id: I90798c135bdf76b806e2dde2bdd57c2c11d7e7e9