tree d8eef92727b7ec1af273ddcbe6cae2a462ea949a
parent 824441069010806b63cc5d110e5acd1f1d1ee858
author Michael Brown <mcb30@ipxe.org> 1688485803 +0100
committer Michael Brown <mcb30@ipxe.org> 1688486079 +0100

[interface] Fix debug message values for temporary interfaces

The interface debug message values constructed by INTF_DBG() et al
rely on the interface being embedded within a containing object.  This
assumption is not valid for the temporary outbound-only interfaces
constructed on the stack by intf_shutdown() and xfer_vredirect().

Formalise the notion of a temporary outbound-only interface as having
a NULL interface descriptor, and overload the "original interface
descriptor" field to contain a pointer to the original interface that
the temporary interface is shadowing.

Originally-fixed-by: Vincent Fazio <vfazio@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>