tree 7dc18b10ae5a51591b774d911efb3e912b9d24bb
parent 58508b22972b6e29922fb7c40a833966a6d33e46
author Kevin Schoedel <67607049+kpschoedel@users.noreply.github.com> 1635341105 -0400
committer GitHub <noreply@github.com> 1635341105 -0400
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Convert Inet::InterfaceId to a class (#10979)

* Convert Inet::InterfaceId to a class

#### Problem

The current `#if`+`typedef` requires the actual definition to be visible
at every appearance, rather than merely an opaque forward class declaration,
which is an obstace to #7715 _Virtualize System and Inet interfaces_.

#### Change overview

Convert `InterfaceId` to a class. Some free functions become class methods,
and `INET_NULL_INTERFACEID` is replaced by a default-constructed
`InterfaceId`.

#### Testing

CI; no changes to functionality intended.

* add InterfaceId::Null()

* replace strcpy()