ncsi-cmd: Add a new executable for issuing NCSI commands

At the moment, the ncsi-netlink utility does two things:

- allows management of the kernel NCSI state, such as the channel and
package m

ncsi-cmd: Add a new executable for issuing NCSI commands

At the moment, the ncsi-netlink utility does two things:

- allows management of the kernel NCSI state, such as the channel and
package masks

- allows issuing NCSI messages to the NCSI-capable NIC, through the
NCSI_CMD_SEND_CMD interface

While these two things do share the same kernel API, they have somewhat
different objectives: one is controlling local state, the other is
controlling remote (ie, the NIC) state.

In future, we want to allow non-netlink-based NCSI transports for
issuing commands to the NIC, which makes the ncsi-netlink name somewhat
inaccurate for those.

So, introduce a new tool, 'ncsi-cmd', for issuing NCSI commands over the
netlink interface.

This has similar command-line semantics to the existing
'ncsi-netlink [...] -o <PAYLOAD>' usage, but has a few changes for a
more ergonomic UI:

Firstly, the type (or "opcode") byte is no longer packed into the
payload data, because it's not really payload.

Secondly, we use --interface/-i rather than --index/-x, with a note that
interfaces are specified by index. This allows for future changes that
allow specifying interfaces by name.

Finally, to make it clear that we can issue more than just OEM
commands, we have separate subcommands: "oem" and "raw". These are
similar, just that "oem" implies the standard OEM type value of 0x50.
So, the following are equivalent:

ncsi-cmd -i2 -p0 oem 010203

ncsi-cmd -i2 -p0 raw 0x50 010203

But now we have a cleaner interface for not-OEM commands:

ncsi-cmd -i12 -p0 raw 0x15

For issuing command type 0x15, "Get Version ID".

We remove the send logic from ncsi-netlink, but leave a compatibility
shim that will exec() ncsi-cmd with the appropriate arguments instead.

Change-Id: Ied240db0d545d5770df0927da354c65b82ee9508
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>

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Add Set Package and Channel Mask to ncsi-netlink utility

The NCSI driver has added two commands for setting the Package Mask
and the Channel Mask within a package. The ncsi-netlink utility does
not

Add Set Package and Channel Mask to ncsi-netlink utility

The NCSI driver has added two commands for setting the Package Mask
and the Channel Mask within a package. The ncsi-netlink utility does
not support these new commands.

Add the ability to set the package and the channel mask values.

Tested:
Instrumented the NCSI kernel driver to print mask values.
Issued 'ncsi-netlink -x 3 -j 0x3' and saw the NCSI driver print the
new package mask.
Issued 'ncsi-netlink -x 3 -p 0 -k 0x3' and saw the NCSI driver
print the new channel mask.

Change-Id: Icd2188e789de43f631fe26d9e751d564ba5f822f
Signed-off-by: Johnathan Mantey <johnathanx.mantey@intel.com>

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Make Send Command feature more flexible

The sendOemCommand command, used to send NCSI_CMD_SEND_CMD payloads,
is hardcoded to only send one command.

Update the sendOemCommand function to allow the s

Make Send Command feature more flexible

The sendOemCommand command, used to send NCSI_CMD_SEND_CMD payloads,
is hardcoded to only send one command.

Update the sendOemCommand function to allow the sub-operation to be
passed as a command line argument. This is done by prepending the
sub-operation byte to the front of the Send Cmd payload.

Doing this allows sub-operations without any payload bytes to be
called. For example "-o 0a", where the sub-operation for Send Cmd is
the 0x0a value.

Tested:
Sent 'ncsi-netlink -x 3 -p 0 -c 0 -o 50000001572100' and confirmed
the 0x50 byte worked the same way as the original hard-coded value.
Sent 'ncsi-netlink -x 3 -p 0 -c 0 -o 0a' and confirmed the 0x0a
sub-operation functioned on the submitters SUT.

Change-Id: I20f093fd8296f549fce03dc5729b8e5fedcab313
Signed-off-by: Johnathan Mantey <johnathanx.mantey@intel.com>

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Add support for sending NCSI command

Provide a means to send an OEM command to an NIC via NCSI netlink.
This may be invoked from a systemd Unit file to configure NIC
behavior.

Some NICs provide OEM

Add support for sending NCSI command

Provide a means to send an OEM command to an NIC via NCSI netlink.
This may be invoked from a systemd Unit file to configure NIC
behavior.

Some NICs provide OEM commands to influence their behavior, for
example maintaining full speed even when the host is down instead
of negotiating a lower speed for power.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Change-Id: Id920b618422e8fbfc51984fbf932045bfb5e56e6

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build: Split c++ sources into a subdirectory

Change-Id: Iedea50c688189ae4953195105e323f7173d17a4b
Signed-off-by: William A. Kennington III <wak@google.com>