astlpc: Provide KCS device path as a binding argument

Currently astlpc binding expects a '/dev/mctp0' device in the system
for the KCS communication. This device is a symbolic link to the
real '/dev

astlpc: Provide KCS device path as a binding argument

Currently astlpc binding expects a '/dev/mctp0' device in the system
for the KCS communication. This device is a symbolic link to the
real '/dev/raw-kcsX' device, created by the udev rules populated by the
build system.
This approach is not ideal since the build system populates udev rules
for the KCS3 and KCS4 channels simultaneously and for these channels
only. This means that there are some design limitations for the MCTP
communication. It is only possible on KCS3 or KCS4 channel, and if one
of these channels is used, the other one must be disabled.
To make design more flexible get rid of all the udev rules and provide
'/dev/raw-kcsX' device path as an argument to the binding
initialization code.

Change-Id: I505e44280636c83b59669b314f60279b371d0403
Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>

show more ...

mctp-demux-daemon: Change default log level to MCTP_LOG_NOTICE

This allows us to log things that aren't warnings or errors but do need
some attention, more so than info-level issues.

Signed-off-by:

mctp-demux-daemon: Change default log level to MCTP_LOG_NOTICE

This allows us to log things that aren't warnings or errors but do need
some attention, more so than info-level issues.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I99779ebb4f15672e969337be8e52e247d803deb1

show more ...

pcap: Use SLL2 linktype for captures

This means we can use wireshark on our pcaps.

Signed-off-by: Rashmica Gupta <rashmica@linux.ibm.com>
Change-Id: I215af00e064d352e41d0a8eb87d5a30582998676

format: reformat with clang-format

Reformat everything with clang-format and remove .clang-ignore and
custom code formatter.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I93dfca67

format: reformat with clang-format

Reformat everything with clang-format and remove .clang-ignore and
custom code formatter.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I93dfca67948d3fbcc0f05ece4ae3e4dd9495ab57

show more ...

mctp-demux-daemon: Exploit binding mctp_*_init_pollfd() APIs

Once bindings are correctly implemented as async the daemon itself will
follow.

Finally, now they're unused, drop the mctp_*_get_fd() AP

mctp-demux-daemon: Exploit binding mctp_*_init_pollfd() APIs

Once bindings are correctly implemented as async the daemon itself will
follow.

Finally, now they're unused, drop the mctp_*_get_fd() APIs as they're
strictly less powerful.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: Ibc2bbc1d75b031e4422429d606e6345d794cb44d

show more ...

core: Add TX/RX API that exposes message tag and tag owner

MCTP received packets can carry a message tag and tag owner bit
which is set by a remote MCTP endpoint. This can be used by the
remote MCTP

core: Add TX/RX API that exposes message tag and tag owner

MCTP received packets can carry a message tag and tag owner bit
which is set by a remote MCTP endpoint. This can be used by the
remote MCTP endpoint to track the responses. Thus, libmctp should
provide a mechanism for the upper layer MCTP applications to
respond with the same message tag.

This patchset extends TX and RX API with message tag and
tag owner bits.

Signed-off-by: Sumanth Bhat <sumanth.bhat@linux.intel.com>
Change-Id: I6d07eafa86c653abdd4313ab7cc77e5a93124477

show more ...

libmctp: Introduce compiler.h

Define __unused here and include compiler.h in all the places we can
make use of it. Clean up some header ordering and include styles while
we're at it.

Signed-off-by:

libmctp: Introduce compiler.h

Define __unused here and include compiler.h in all the places we can
make use of it. Clean up some header ordering and include styles while
we're at it.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I33ddbdacbddbbf557dc02e42d8dde71a16e1cabe

show more ...

mctp-demux-daemon: sanity check pcap args

Ensure that the apporprate linktype argument is provided whenever
--capture-socket or --capture-binding are enabled.

Change-Id: I8f1294

mctp-demux-daemon: sanity check pcap args

Ensure that the apporprate linktype argument is provided whenever
--capture-socket or --capture-binding are enabled.

Change-Id: I8f1294848be2e5bbf191295f1bd23ebe3be0424c
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>

show more ...

mctp-demux-daemon: Cleanup binding on exit

This is necessary for e.g. the astlpc binding which should notify the
host that the interface is no longer active if the daemon is going away.

mctp-demux-daemon: Cleanup binding on exit

This is necessary for e.g. the astlpc binding which should notify the
host that the interface is no longer active if the daemon is going away.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I3f92232017d8faa1f3cd9be7ec27043b900fd4be

show more ...

mctp-demux-daemon: Fix cleanup path on socket_init() failure

Now that we have potentially set up packet capture, make sure to clean
up the packet capture resources if we get a failure du

mctp-demux-daemon: Fix cleanup path on socket_init() failure

Now that we have potentially set up packet capture, make sure to clean
up the packet capture resources if we get a failure during socket
initialisation.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I138cc24509bc6009ad0f3adda282e045a099984c

show more ...

mctp-demux-daemon: Add packet capture option

Optionally enable libpcap support in mctp-demux-daemon to capture
packets both from the Unix domain socket and binding interfaces.
Provid

mctp-demux-daemon: Add packet capture option

Optionally enable libpcap support in mctp-demux-daemon to capture
packets both from the Unix domain socket and binding interfaces.
Providing the two capture points allows for tracking down issues with
packets being dropped during binding initialisation.

As there's no formal linktype defined for MCTP or higher-level DMTF
protocols command-line switches provide the ability to specify one of
the private linktype values in the range 147-162.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I593d9e4be80c0198e643758f216e774169668a8c

show more ...

mctp-demux: Add signalfd support

This allows us to clean up resources when the process is terminated.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: Ia8ba75394490f05

mctp-demux: Add signalfd support

This allows us to clean up resources when the process is terminated.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: Ia8ba75394490f0577bac7d860dbdb4f92e672d2d

show more ...

mctp-demux-daemon: Use systemd socket activation

Take advantage of lazy initialisation.

However, this also allows (one) daemon providing services over MCTP
(pldmd) an opportunit

mctp-demux-daemon: Use systemd socket activation

Take advantage of lazy initialisation.

However, this also allows (one) daemon providing services over MCTP
(pldmd) an opportunity to start prior to MCTP interfaces coming up. This
is a stunted way to provide capabilities that might be assumed by other
components (the host) without implementing some required messages from
the MCTP standard.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I4b1c21f4fd42f84e2c85a453570a74330fc70ecf

show more ...

mctp-demux-daemon: Warn about failed messages

It's possible that messages might not be sent if they are routed to a
binding before that binding has completed its protocol initialisation.

mctp-demux-daemon: Warn about failed messages

It's possible that messages might not be sent if they are routed to a
binding before that binding has completed its protocol initialisation.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I1ddf6817fdef974b61dcb3ce0f166af94b4b0f16

show more ...

bootstrap: Ratchet up compiler strictness

Replace the specific warning flags with -Wall -Wextra and turn on
-Werror.

Covered by -Wall:

* -Wformat
* -Warray-bounds

bootstrap: Ratchet up compiler strictness

Replace the specific warning flags with -Wall -Wextra and turn on
-Werror.

Covered by -Wall:

* -Wformat
* -Warray-bounds
* -Wimplicit-function-declaration

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: Iab21e67026d2453648aa6ebe4c299e1162fc5ebf

show more ...

mctp-demux-daemon: Silence warnings on remote close

If applications constantly connect then disconnect from the demux daemon
we see a "flood" of messages like:

Mar 05 07:15:

mctp-demux-daemon: Silence warnings on remote close

If applications constantly connect then disconnect from the demux daemon
we see a "flood" of messages like:

Mar 05 07:15:47 w57 mctp-demux[177]: mctp-demux-daemon: can't receive(peek) from client: Connection reset by peer
Mar 05 07:15:52 w57 mctp-demux[177]: mctp-demux-daemon: can't receive(peek) from client: Connection reset by peer
Mar 05 07:15:52 w57 mctp-demux[177]: mctp-demux-daemon: can't receive(peek) from client: Connection reset by peer
Mar 05 07:15:53 w57 mctp-demux[177]: mctp-demux-daemon: can't receive(peek) from client: Connection reset by peer
Mar 05 07:15:54 w57 mctp-demux[177]: mctp-demux-daemon: can't receive(peek) from client: Connection reset by peer

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I99eabffd45693e5ab570575c4c8cca2ee55196e0

show more ...

mctp-demux-daemon: Resolve uninitialised variable warning

Multiple error paths in client_process_recv() failed to set rc before returning
it from the out_close label:

utils/

mctp-demux-daemon: Resolve uninitialised variable warning

Multiple error paths in client_process_recv() failed to set rc before returning
it from the out_close label:

utils/mctp-demux-daemon.c: In function ‘main’:
utils/mctp-demux-daemon.c:457:7: error: ‘rc’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
457 | if (rc)
| ^
utils/mctp-demux-daemon.c:307:6: note: ‘rc’ was declared here
307 | int rc;
| ^~
cc1: all warnings being treated as errors

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I4196a2b5f7b242c53921040fead102525c92a286

show more ...

mctp-demux-daemon: Explicitly disable verbose before option parsing

Otherwise we have control flow dependent on uninitialised data.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>

mctp-demux-daemon: Explicitly disable verbose before option parsing

Otherwise we have control flow dependent on uninitialised data.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I0d9e5512ce198ceddf8fb7a09d15c8de991d0dbd

show more ...

mctp-demux-daemon: Fix erroneous call to memset()

Detected with CFLAGS="-Wall -Werror":

utils/mctp-demux-daemon.c: In function ‘socket_process’:
utils/mctp-demux-daemon.c:294:26

mctp-demux-daemon: Fix erroneous call to memset()

Detected with CFLAGS="-Wall -Werror":

utils/mctp-demux-daemon.c: In function ‘socket_process’:
utils/mctp-demux-daemon.c:294:26: error: argument to ‘sizeof’ in ‘memset’ call is the same expression as the destination; did you mean to dereference it? [-Werror=sizeof-pointer-memaccess]
294 | memset(client, 0, sizeof(client));
| ^
cc1: all warnings being treated as errors

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: Ifc78c83858804c2145f93b0df3924404a3a6a51a

show more ...

demux-daemon: Add a 'null' binding option

For cases where we don't have a specific hardware configuration
available (eg., a platform-independent OpenBMC recipe), we want a
provision

demux-daemon: Add a 'null' binding option

For cases where we don't have a specific hardware configuration
available (eg., a platform-independent OpenBMC recipe), we want a
provision to run the demux daemon without specific hardware
dependencies.

This change introduces a null binding for mctp-demux-daemon, in order to
allow a hardware-neutral daemon process to be run.

Change-Id: I1d9e66f3c4b636f9160eb2fa31d547ca4add7f7a
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

show more ...

API: Add binding accessors to generic struct mctp_binding

Rather than have every binding include their own wrappers around
binding<->core functions, introduce an accessor to retrieve the

API: Add binding accessors to generic struct mctp_binding

Rather than have every binding include their own wrappers around
binding<->core functions, introduce an accessor to retrieve the struct
mctp_binding from each.

This means we no longer need the binding-specific registration
callbacks. However, we do now need a ->start callback, to allow bindings
to perform post-registration init.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Change-Id: I6cee9e93f37520f85c155a0ca34017cc0675552c

show more ...

astlpc: abstract hardware interactions to allow a non-fileio-based implementation

Currently, the astlpc binding assumes a particular method of access to
the KCS and LPC interfaces, using

astlpc: abstract hardware interactions to allow a non-fileio-based implementation

Currently, the astlpc binding assumes a particular method of access to
the KCS and LPC interfaces, using reads and writes to a pair of Linux
devices.

We want to be able to use the astlpc binding in different environments,
possibly not backed by file IO. This change adds an interface to provide
custom operations to read and write the KCS and LPC state.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Change-Id: I3e403a025760657a7264098f5486f046e3ac436b

show more ...

mctp-demux-daemon: don't limit message sizes

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Change-Id: I3e13de50d086dddcb4f5c7d40bdcd24687f63f07

mctp-demux-daemon: fix eid in log message

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Change-Id: If1337e896a58784f4ba7a55f3dee6b37e28662d3

demux-daemon: Add support for loopback messages

If a demux client sends a message addressed to the local EID, loop it
back to other clients.

Signed-off-by: Jeremy Kerr <jk@ozlab

demux-daemon: Add support for loopback messages

If a demux client sends a message addressed to the local EID, loop it
back to other clients.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Change-Id: I6ae4720688d6ad3e50793f1d74aa50259797649e

show more ...