linux-toradex.git/net/core/devlink.c, branch v4.10

devlink: Add E-Switch inline mode control

2016-11-24T21:01:14+00:00

Some HWs need the VF driver to put part of the packet headers on the
TX descriptor so the e-switch can do proper matching and steering.

The supported modes: none, link, network, transport.

Signed-off-by: Roi Dayan 
Reviewed-by: Or Gerlitz 
Signed-off-by: Saeed Mahameed 
Signed-off-by: David S. Miller

genetlink: mark families as __ro_after_init

2016-10-27T20:16:09+00:00

Now genl_register_family() is the only thing (other than the
users themselves, perhaps, but I didn't find any doing that)
writing to the family struct.

In all families that I found, genl_register_family() is only
called from __init functions (some indirectly, in which case
I've add __init annotations to clarifly things), so all can
actually be marked __ro_after_init.

This protects the data structure from accidental corruption.

Signed-off-by: Johannes Berg 
Signed-off-by: David S. Miller

genetlink: statically initialize families

2016-10-27T20:16:09+00:00

Instead of providing macros/inline functions to initialize
the families, make all users initialize them statically and
get rid of the macros.

This reduces the kernel code size by about 1.6k on x86-64
(with allyesconfig).

Signed-off-by: Johannes Berg 
Signed-off-by: David S. Miller

genetlink: no longer support using static family IDs

2016-10-27T20:16:09+00:00

Static family IDs have never really been used, the only
use case was the workaround I introduced for those users
that assumed their family ID was also their multicast
group ID.

Additionally, because static family IDs would never be
reserved by the generic netlink code, using a relatively
low ID would only work for built-in families that can be
registered immediately after generic netlink is started,
which is basically only the control family (apart from
the workaround code, which I also had to add code for so
it would reserve those IDs)

Thus, anything other than GENL_ID_GENERATE is flawed and
luckily not used except in the cases I mentioned. Move
those workarounds into a few lines of code, and then get
rid of GENL_ID_GENERATE entirely, making it more robust.

Signed-off-by: Johannes Berg 
Signed-off-by: David S. Miller

devlink: Prevent port_type_set() callback when it's not needed

2016-10-26T21:30:32+00:00

When a port_type_set() is been called and the new port type set is the same
as the old one, just return success.

Signed-off-by: Elad Raz 
Signed-off-by: Jiri Pirko 
Signed-off-by: David S. Miller

devlink: add hardware messages tracing facility

2016-07-12T21:20:18+00:00

Define a tracepoint and allow user to trace messages going to and from
hardware associated with devlink instance.

Signed-off-by: Jiri Pirko 
Acked-by: Steven Rostedt 
Signed-off-by: David S. Miller

net/devlink: Add E-Switch mode control

2016-07-02T18:40:40+00:00

Add the commands to set and show the mode of SRIOV E-Switch, two modes
are supported:

* legacy: operating in the "old" L2 based mode (DMAC --> VF vport)

* switchdev: the E-Switch is referred to as whitebox switch configured
using standard tools such as tc, bridge, openvswitch etc. To allow
working with the tools, for each VF, a VF representor netdevice is
created by the E-Switch manager vendor device driver instance (e.g PF).

Signed-off-by: Or Gerlitz 
Signed-off-by: Saeed Mahameed 
Signed-off-by: David S. Miller

devlink: implement shared buffer occupancy monitoring interface

2016-04-14T20:22:03+00:00

User needs to monitor shared buffer occupancy. For that, he issues a
snapshot command in order to instruct hardware to catch current and
maximal occupancy values, and clear command in order to clear the
historical maximal values.

Also port-pool and tc-pool-bind command response messages are extended to
carry occupancy values.

Signed-off-by: Jiri Pirko 
Reviewed-by: Ido Schimmel 
Signed-off-by: David S. Miller

devlink: add shared buffer configuration

2016-04-14T20:22:03+00:00

Define userspace API and drivers API for configuration of shared
buffers. Four basic objects are defined:
shared buffer - attributes are size, number of pools and TCs
pool - chunk of sharedbuffer definition, it has some size and either
       static or dynamic threshold
port pool threshold - to set per-port threshold for each pool
port tc threshold bind - to bind port and TC to specified pool
                         with threshold.

Signed-off-by: Jiri Pirko 
Reviewed-by: Ido Schimmel 
Signed-off-by: David S. Miller

devlink: share user_ptr pointer for both devlink and devlink_port

2016-04-08T19:40:08+00:00

Ptr to devlink structure can be easily obtained from
devlink_port->devlink. So share user_ptr[0] pointer for both and leave
user_ptr[1] free for other users.

Signed-off-by: Jiri Pirko 
Reviewed-by: Ido Schimmel 
Signed-off-by: David S. Miller