Merge tag 'mlx5-updates-2019-06-13' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

   intel/i40e

   intel/iavf

   intel/ice

   mellanox/mlx5

.. only::  subproject

.. SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB

=================================================

Mellanox ConnectX(R) mlx5 core VPI Network Driver

=================================================

Copyright (c) 2019, Mellanox Technologies LTD.

Contents

========

- `Enabling the driver and kconfig options`_

- `Devlink health reporters`_

Enabling the driver and kconfig options

================================================

| mlx5 core is modular and most of the major mlx5 core driver features can be selected (compiled in/out)

| at build time via kernel Kconfig flags.

| Basic features, ethernet net device rx/tx offloads and XDP, are available with the most basic flags

| CONFIG_MLX5_CORE=y/m and CONFIG_MLX5_CORE_EN=y.

| For the list of advanced features please see below.

**CONFIG_MLX5_CORE=(y/m/n)** (module mlx5_core.ko)

|    The driver can be enabled by choosing CONFIG_MLX5_CORE=y/m in kernel config.

|    This will provide mlx5 core driver for mlx5 ulps to interface with (mlx5e, mlx5_ib).

**CONFIG_MLX5_CORE_EN=(y/n)**

|    Choosing this option will allow basic ethernet netdevice support with all of the standard rx/tx offloads.

|    mlx5e is the mlx5 ulp driver which provides netdevice kernel interface, when chosen, mlx5e will be

|    built-in into mlx5_core.ko.

**CONFIG_MLX5_EN_ARFS=(y/n)**

|     Enables Hardware-accelerated receive flow steering (arfs) support, and ntuple filtering.

|     https://community.mellanox.com/s/article/howto-configure-arfs-on-connectx-4

**CONFIG_MLX5_EN_RXNFC=(y/n)**

|    Enables ethtool receive network flow classification, which allows user defined

|    flow rules to direct traffic into arbitrary rx queue via ethtool set/get_rxnfc API.

**CONFIG_MLX5_CORE_EN_DCB=(y/n)**:

|    Enables `Data Center Bridging (DCB) Support <https://community.mellanox.com/s/article/howto-auto-config-pfc-and-ets-on-connectx-4-via-lldp-dcbx>`_.

**CONFIG_MLX5_MPFS=(y/n)**

|    Ethernet Multi-Physical Function Switch (MPFS) support in ConnectX NIC.

|    MPFs is required for when `Multi-Host <http://www.mellanox.com/page/multihost>`_ configuration is enabled to allow passing

|    user configured unicast MAC addresses to the requesting PF.

**CONFIG_MLX5_ESWITCH=(y/n)**

|    Ethernet SRIOV E-Switch support in ConnectX NIC. E-Switch provides internal SRIOV packet steering

|    and switching for the enabled VFs and PF in two available modes:

|           1) `Legacy SRIOV mode (L2 mac vlan steering based) <https://community.mellanox.com/s/article/howto-configure-sr-iov-for-connectx-4-connectx-5-with-kvm--ethernet-x>`_.

|           2) `Switchdev mode (eswitch offloads) <https://www.mellanox.com/related-docs/prod_software/ASAP2_Hardware_Offloading_for_vSwitches_User_Manual_v4.4.pdf>`_.

**CONFIG_MLX5_CORE_IPOIB=(y/n)**

|    IPoIB offloads & acceleration support.

|    Requires CONFIG_MLX5_CORE_EN to provide an accelerated interface for the rdma

|    IPoIB ulp netdevice.

**CONFIG_MLX5_FPGA=(y/n)**

|    Build support for the Innova family of network cards by Mellanox Technologies.

|    Innova network cards are comprised of a ConnectX chip and an FPGA chip on one board.

|    If you select this option, the mlx5_core driver will include the Innova FPGA core and allow

|    building sandbox-specific client drivers.

**CONFIG_MLX5_EN_IPSEC=(y/n)**

|    Enables `IPSec XFRM cryptography-offload accelaration <http://www.mellanox.com/related-docs/prod_software/Mellanox_Innova_IPsec_Ethernet_Adapter_Card_User_Manual.pdf>`_.

**CONFIG_MLX5_EN_TLS=(y/n)**

|   TLS cryptography-offload accelaration.

**CONFIG_MLX5_INFINIBAND=(y/n/m)** (module mlx5_ib.ko)

|   Provides low-level InfiniBand/RDMA and `RoCE <https://community.mellanox.com/s/article/recommended-network-configuration-examples-for-roce-deployment>`_ support.

**External options** ( Choose if the corresponding mlx5 feature is required )

- CONFIG_PTP_1588_CLOCK: When chosen, mlx5 ptp support will be enabled

- CONFIG_VXLAN: When chosen, mlx5 vxaln support will be enabled.

- CONFIG_MLXFW: When chosen, mlx5 firmware flashing support will be enabled (via devlink and ethtool).

Devlink health reporters

========================

tx reporter

-----------

The tx reporter is responsible of two error scenarios:

- TX timeout

    Report on kernel tx timeout detection.

    Recover by searching lost interrupts.

- TX error completion

    Report on error tx completion.

    Recover by flushing the TX queue and reset it.

TX reporter also support Diagnose callback, on which it provides

real time information of its send queues status.

User commands examples:

- Diagnose send queues status::

    $ devlink health diagnose pci/0000:82:00.0 reporter tx

- Show number of tx errors indicated, number of recover flows ended successfully,

  is autorecover enabled and graceful period from last recover::

    $ devlink health show pci/0000:82:00.0 reporter tx

fw reporter

-----------

The fw reporter implements diagnose and dump callbacks.

It follows symptoms of fw error such as fw syndrome by triggering

fw core dump and storing it into the dump buffer.

The fw reporter diagnose command can be triggered any time by the user to check

current fw status.

User commands examples:

- Check fw heath status::

    $ devlink health diagnose pci/0000:82:00.0 reporter fw

- Read FW core dump if already stored or trigger new one::

    $ devlink health dump show pci/0000:82:00.0 reporter fw

NOTE: This command can run only on the PF which has fw tracer ownership,

running it on other PF or any VF will return "Operation not permitted".

fw fatal reporter

-----------------

The fw fatal reporter implements dump and recover callbacks.

It follows fatal errors indications by CR-space dump and recover flow.

The CR-space dump uses vsc interface which is valid even if the FW command

interface is not functional, which is the case in most FW fatal errors.

The recover function runs recover flow which reloads the driver and triggers fw

reset if needed.

User commands examples:

- Run fw recover flow manually::

    $ devlink health recover pci/0000:82:00.0 reporter fw_fatal

- Read FW CR-space dump if already strored or trigger new one::

    $ devlink health dump show pci/0000:82:00.1 reporter fw_fatal

NOTE: This command can run only on PF.

S:	Supported

F:	drivers/net/ethernet/mellanox/mlx5/core/

F:	include/linux/mlx5/

F:	Documentation/networking/device_drivers/mellanox/

MELLANOX MLX5 IB driver

M:	Leon Romanovsky <leonro@mellanox.com>

		health.o mcg.o cq.o alloc.o qp.o port.o mr.o pd.o \

		transobj.o vport.o sriov.o fs_cmd.o fs_core.o \

		fs_counters.o rl.o lag.o dev.o events.o wq.o lib/gid.o \

		lib/devcom.o diag/fs_tracepoint.o diag/fw_tracer.o

		lib/devcom.o lib/pci_vsc.o diag/fs_tracepoint.o \

		diag/fw_tracer.o diag/crdump.o devlink.o

#

# Netdev basic

// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB

/* Copyright (c) 2019 Mellanox Technologies */

#include <devlink.h>

#include "mlx5_core.h"

#include "eswitch.h"

static int mlx5_devlink_flash_update(struct devlink *devlink,

				     const char *file_name,

				     const char *component,

				     struct netlink_ext_ack *extack)

{

	struct mlx5_core_dev *dev = devlink_priv(devlink);

	const struct firmware *fw;

	int err;

	if (component)

		return -EOPNOTSUPP;

	err = request_firmware_direct(&fw, file_name, &dev->pdev->dev);

	if (err)

		return err;

	return mlx5_firmware_flash(dev, fw, extack);

}

static const struct devlink_ops mlx5_devlink_ops = {

#ifdef CONFIG_MLX5_ESWITCH

	.eswitch_mode_set = mlx5_devlink_eswitch_mode_set,

	.eswitch_mode_get = mlx5_devlink_eswitch_mode_get,

	.eswitch_inline_mode_set = mlx5_devlink_eswitch_inline_mode_set,

	.eswitch_inline_mode_get = mlx5_devlink_eswitch_inline_mode_get,

	.eswitch_encap_mode_set = mlx5_devlink_eswitch_encap_mode_set,

	.eswitch_encap_mode_get = mlx5_devlink_eswitch_encap_mode_get,

#endif

	.flash_update = mlx5_devlink_flash_update,

};

struct devlink *mlx5_devlink_alloc()

{

	return devlink_alloc(&mlx5_devlink_ops, sizeof(struct mlx5_core_dev));

}

void mlx5_devlink_free(struct devlink *devlink)

{

	devlink_free(devlink);

}

int mlx5_devlink_register(struct devlink *devlink, struct device *dev)

{

	return devlink_register(devlink, dev);

}

void mlx5_devlink_unregister(struct devlink *devlink)

{

	devlink_unregister(devlink);

}