libpldm: Rationalise the local and installed path of pldm.h

Since chopping libpldm out of openbmc/pldm.git there's been a symlink
from `include/libpldm/pldm.h` pointing to
`include/libpldm/requester

libpldm: Rationalise the local and installed path of pldm.h

Since chopping libpldm out of openbmc/pldm.git there's been a symlink
from `include/libpldm/pldm.h` pointing to
`include/libpldm/requester/pldm.h`. The file list contained in the
`libpldm_headers` variable defined by `include/libpldm/meson.build`
contained an entry for `requester/pldm.h`, though not the symlink found
at `include/libpldm/pldm.h`.

Prior to a7989cd65d51 ("meson: Fix for OEM header collision issue")
`install_headers(libpldm_headers, ...)` directive didn't specify
`preserve_path: true`, therefore the `requester/pldm.h` header file was
installed directly under `${INCLUDEDIR}/libpldm` as
`${INCLUDEDIR}/libpldm/pldm.h`, and no file was installed to
`${INCLUDEDIR}/libpldm/requester/pldm.h`.

All dependent applications using the declarations in `pldm.h` therefore
included the header using the directive `#include <libpldm/pldm.h>`.
However, internal to the libpldm implementation we were using the
non-symlinked path in the local tree:
`#include "libpldm/requester/pldm.h"`

With a7989cd65d51 ("meson: Fix for OEM header collision issue") we
rationalised the meson variables used to install the headers as part of
properly separating OEM headers from one-another. This lead to
specifying `preserve_path: true` for the
`install_headers(libpldm_headers, ...)` meson directive, which further
lead to the installed location of `pldm.h` changing to
`${INCLUDEDIR}/libpldm/requester/pldm.h`. This broke all consuming
applications which were necessarily using `#include <libpldm/pldm.h>` as
outlined above.

Get rid of the symlink at `include/libpldm/pldm.h`, move
`include/libpldm/requester/pldm.h` there instead, and fix up all
internal references to the header. This unbreaks applications consuming
libpldm, and prevents internal inconsistencies going forward.

Fixes: a7989cd65d51 ("meson: Fix for OEM header collision issue")
Change-Id: I24f1e25303890c41fd3da6323c67d838022cc55d
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>

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license: add spdx identifier to all files

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ifddd07cc0eb5edeb2dcb410747073d68c6631cb1

transport: af-mctp: Add pldm_transport_af_mctp_bind()

The af-mctp transport needs specific setup before it can receive
requests[1]. Futher, we must track the MCTP metadata on each request
message an

transport: af-mctp: Add pldm_transport_af_mctp_bind()

The af-mctp transport needs specific setup before it can receive
requests[1]. Futher, we must track the MCTP metadata on each request
message and apply it to the response for correlation at the requester.
This behaviour is addressed in the Message Tag and Tag Owner fields
outlined by Table 1 of DSP0236 v1.3.1.

[1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/networking/mctp.rst?h=v6.5#n73

Change-Id: I3fbd84a4174b56d618a42ca58c9881ea5a80f060
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>

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