Add documentation of ti,sgmii-ref-clock-output-enable
which can be used to select SGMII mode type (4 or 6-wire).
Signed-off-by: Vitaly Gaiduk <vitaly.gaiduk@cloudbear.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
This change documents the 'mac-mode' property that was introduced in the
'stmmac' driver to support passive mode converters that can sit in-between
the MAC & PHY.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This adds the initial documentation for the NFP driver specific
documentation.
Right now, only basic information is provided about acquiring firmware
and configuring device firmware loading.
Original driver documentation can be found here:
https://github.com/Netronome/nfp-drv-kmods/blob/master/README.md
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for the 'reset_dev_on_drv_probe' devlink parameter. The
reset control policy is controlled by the 'abi_drv_reset' hwinfo key.
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for the 'fw_load_policy' devlink parameter. The FW load
policy is controlled by the 'app_fw_from_flash' hwinfo key.
Remap the values from devlink to the hwinfo key and back.
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add the 'reset_dev_on_drv_probe' devlink parameter, controlling the
device reset policy on driver probe.
This parameter is useful in conjunction with the existing
'fw_load_policy' parameter.
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add the 'disk' value to the generic 'fw_load_policy' devlink parameter.
This value indicates that firmware should always be loaded from disk
only.
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Update the LAN driver documentation to include the latest feature
implementation and driver capabilities.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Johan Hedberg says:
====================
pull request: bluetooth-next 2019-09-06
Here's the main bluetooth-next pull request for the 5.4 kernel.
- Cleanups & fixes to btrtl driver
- Fixes for Realtek devices in btusb, e.g. for suspend handling
- Firmware loading support for BCM4345C5
- hidp_send_message() return value handling fixes
- Added support for utilizing Fast Advertising Interval
- Various other minor cleanups & fixes
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann says:
====================
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) Add the ability to use unaligned chunks in the AF_XDP umem. By
relaxing where the chunks can be placed, it allows to use an
arbitrary buffer size and place whenever there is a free
address in the umem. Helps more seamless DPDK AF_XDP driver
integration. Support for i40e, ixgbe and mlx5e, from Kevin and
Maxim.
2) Addition of a wakeup flag for AF_XDP tx and fill rings so the
application can wake up the kernel for rx/tx processing which
avoids busy-spinning of the latter, useful when app and driver
is located on the same core. Support for i40e, ixgbe and mlx5e,
from Magnus and Maxim.
3) bpftool fixes for printf()-like functions so compiler can actually
enforce checks, bpftool build system improvements for custom output
directories, and addition of 'bpftool map freeze' command, from Quentin.
4) Support attaching/detaching XDP programs from 'bpftool net' command,
from Daniel.
5) Automatic xskmap cleanup when AF_XDP socket is released, and several
barrier/{read,write}_once fixes in AF_XDP code, from Björn.
6) Relicense of bpf_helpers.h/bpf_endian.h for future libbpf
inclusion as well as libbpf versioning improvements, from Andrii.
7) Several new BPF kselftests for verifier precision tracking, from Alexei.
8) Several BPF kselftest fixes wrt endianess to run on s390x, from Ilya.
9) And more BPF kselftest improvements all over the place, from Stanislav.
10) Add simple BPF map op cache for nfp driver to batch dumps, from Jakub.
11) AF_XDP socket umem mapping improvements for 32bit archs, from Ivan.
12) Add BPF-to-BPF call and BTF line info support for s390x JIT, from Yauheni.
13) Small optimization in arm64 JIT to spare 1 insns for BPF_MOD, from Jerin.
14) Fix an error check in bpf_tcp_gen_syncookie() helper, from Petar.
15) Various minor fixes and cleanups, from Nathan, Masahiro, Masanari,
Peter, Wei, Yue.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This is present in the AP6526 WiFi/Bluetooth 5.0 module.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Merge tag 'linux-can-next-for-5.4-20190904' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
pull-request: can-next 2019-09-04 j1939
this is a pull request for net-next/master consisting of 21 patches.
the first 12 patches are by me and target the CAN core infrastructure.
They clean up the names of variables , structs and struct members,
convert can_rx_register() to use max() instead of open coding it and
remove unneeded code from the can_pernet_exit() callback.
The next three patches are also by me and they introduce and make use of
the CAN midlayer private structure. It is used to hold protocol specific
per device data structures.
The next patch is by Oleksij Rempel, switches the
&net->can.rcvlists_lock from a spin_lock() to a spin_lock_bh(), so that
it can be used from NAPI (soft IRQ) context.
The next 4 patches are by Kurt Van Dijck, he first updates his email
address via mailmap and then extends sockaddr_can to include j1939
members.
The final patch is the collective effort of many entities (The j1939
authors: Oliver Hartkopp, Bastian Stender, Elenita Hinds, kbuild test
robot, Kurt Van Dijck, Maxime Jayat, Robin van der Gracht, Oleksij
Rempel, Marc Kleine-Budde). It adds support of SAE J1939 protocol to the
CAN networking stack.
SAE J1939 is the vehicle bus recommended practice used for communication
and diagnostics among vehicle components. Originating in the car and
heavy-duty truck industry in the United States, it is now widely used in
other parts of the world.
P.S.: This pull request doesn't invalidate my last pull request:
"pull-request: can-next 2019-09-03".
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'linux-can-next-for-5.4-20190903' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
pull-request: can-next 2019-09-03
this is a pull request for net-next/master consisting of 15 patches.
The first patch is by Christer Beskow, targets the kvaser_pciefd driver
and fixes the PWM generator's frequency.
The next three patches are by Dan Murphy, the tcan4x5x is updated to use
a proper interrupts/interrupt-parent DT binding to specify the devices
IRQ line. Further the unneeded wake ups of the device is removed from
the driver.
A patch by me for the mcp25xx driver removes the deprecated board file
setup example. Three patches by Andy Shevchenko simplify clock handling,
update the driver from OF to device property API and simplify the
mcp251x_can_suspend() function.
The remaining 7 patches are by me and clean up checkpatch warnings in
the generic CAN device infrastructure.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds a basic driver framework for the Pensando IONIC
network device. There is no functionality right now other than
the ability to load and unload.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current tag set is still rather small and needs a couple
more tags to help with ASIC identification and to have a
more generic FW version.
Cc: Jiri Pirko <jiri@resnulli.us>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
MT7530 port 5 has many modes/configurations.
Update the documentation how to use port 5.
Signed-off-by: René van Dorst <opensource@vdorst.com>
Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
SAE J1939 is the vehicle bus recommended practice used for communication
and diagnostics among vehicle components. Originating in the car and
heavy-duty truck industry in the United States, it is now widely used in
other parts of the world.
J1939, ISO 11783 and NMEA 2000 all share the same high level protocol.
SAE J1939 can be considered the replacement for the older SAE J1708 and
SAE J1587 specifications.
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Elenita Hinds <ecathinds@gmail.com>
Signed-off-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Maxime Jayat <maxime.jayat@mobile-devices.fr>
Signed-off-by: Robin van der Gracht <robin@protonic.nl>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Abstract:
--------
Mellanox ConnetX devices supports packet matching, packet modification and
redirection. These functionalities are also referred to as flow-steering.
To configure a steering rule, the rule is written to the device owned
memory, this memory is accessed and cached by the device when processing
a packet.
Steering rules are constructed from multiple steering entries (STE).
Rules are configured using the Firmware command interface. The Firmware
processes the given driver command and translates them to STEs, then
writes them to the device memory in the current steering tables.
This process is slow due to the architecture of the command interface and
the processing complexity of each rule.
The highlight of this patchset is to cut the middle man (The firmware) and
do steering rules programming into device directly from the driver, with
no firmware intervention whatsoever.
Motivation:
-----------
Software (driver managed) steering allows for high rule insertion rates
compared to the FW steering described above, this is achieved by using
internal RDMA writes to the device owned memory instead of the slow
command interface to program steering rules.
Software (driver managed) steering, doesn't depend on new FW
for new steering functionality, new implementations can be done in the
driver skipping the FW layer.
Performance:
------------
The insertion rate on a single core using the new approach allows
programming ~300K rules per sec. (Done via direct raw test to the new mlx5
sw steering layer, without any kernel layer involved).
Test: TC L2 rules
33K/s with Software steering (this patchset).
5K/s with FW and current driver.
This will improve OVS based solution performance.
Architecture and implementation details:
----------------------------------------
Software steering will be dynamically selected via devlink device
parameter. Example:
$ devlink dev param show pci/0000:06:00.0 name flow_steering_mode
pci/0000:06:00.0:
name flow_steering_mode type driver-specific
values:
cmode runtime value smfs
mlx5 software steering module a.k.a (DR - Direct Rule) is implemented
and contained in mlx5/core/steering directory and controlled by
MLX5_SW_STEERING kconfig flag.
mlx5 core steering layer (fs_core) already provides a shim layer for
implementing different steering mechanisms, software steering will
leverage that as seen at the end of this series.
When Software Steering for a specific steering domain
(NIC/RDMA/Vport/ESwitch, etc ..) is supported, it will cause rules
targeting this domain to be created using SW steering instead of FW.
The implementation includes:
Domain - The steering domain is the object that all other object resides
in. It holds the memory allocator, send engine, locks and other shared
data needed by lower objects such as table, matcher, rule, action.
Each domain can contain multiple tables. Domain is equivalent to
namespaces e.g (NIC/RDMA/Vport/ESwitch, etc ..) as implemented
currently in mlx5_core fs_core (flow steering core).
Table - Table objects are used for holding multiple matchers, each table
has a level used to prevent processing loops. Packets are being
directed to this table once it is set as the root table, this is done
by fs_core using a FW command. A packet is being processed inside the
table matcher by matcher until a successful hit, otherwise the packet
will perform the default action.
Matcher - Matchers objects are used to specify the fields mask for
matching when processing a packet. A matcher belongs to a table, each
matcher can hold multiple rules, each rule with different matching
values corresponding to the matcher mask. Each matcher has a priority
used for rule processing order inside the table.
Action - Action objects are created to specify different steering actions
such as count, reformat (encapsulate, decapsulate, ...), modify
header, forward to table and many other actions. When creating a rule
a sequence of actions can be provided to be executed on a successful
match.
Rule - Rule objects are used to specify a specific match on packets as
well as the actions that should be executed. A rule belongs to a
matcher.
STE - This layer is used to hold the specific STE format for the device
and to convert the requested rule to STEs. Each rule is constructed of
an STE chain, Multiple rules construct a steering graph. Each node in
the graph is a hash table containing multiple STEs. The index of each
STE in the hash table is being calculated using a CRC32 hash function.
Memory pool - Used for managing and caching device owned memory for rule
insertion. The memory is being allocated using DM (device memory) API.
Communication with device - layer for standard RDMA operation using RC QP
to configure the device steering.
Command utility - This module holds all of the FW commands that are
required for SW steering to function.
Patch planning and files:
-------------------------
1) First patch, adds the support to Add flow steering actions to fs_cmd
shim layer.
2) Next 12 patch will add a file per each Software steering
functionality/module as described above. (See patches with title: DR, *)
3) Add CONFIG_MLX5_SW_STEERING for software steering support and enable
build with the new files
4) Next two patches will add the support for software steering in mlx5
steering shim layer
net/mlx5: Add API to set the namespace steering mode
net/mlx5: Add direct rule fs_cmd implementation
5) Last two patches will add the new devlink parameter to select mlx5
steering mode, will be valid only for switchdev mode for now.
Two modes are supported:
1. DMFS - Device managed flow steering
2. SMFS - Software/Driver managed flow steering.
In the DMFS mode, the HW steering entities are created through the
FW. In the SMFS mode this entities are created though the driver
directly.
The driver will use the devlink steering mode only if the steering
domain supports it, for now SMFS will manages only the switchdev
eswitch steering domain.
User command examples:
- Set SMFS flow steering mode::
$ devlink dev param set pci/0000:06:00.0 name flow_steering_mode value "smfs" cmode runtime
- Read device flow steering mode::
$ devlink dev param show pci/0000:06:00.0 name flow_steering_mode
pci/0000:06:00.0:
name flow_steering_mode type driver-specific
values:
cmode runtime value smfs
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Merge tag 'mlx5-updates-2019-09-01-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-updates-2019-09-01 (Software steering support)
Abstract:
--------
Mellanox ConnetX devices supports packet matching, packet modification and
redirection. These functionalities are also referred to as flow-steering.
To configure a steering rule, the rule is written to the device owned
memory, this memory is accessed and cached by the device when processing
a packet.
Steering rules are constructed from multiple steering entries (STE).
Rules are configured using the Firmware command interface. The Firmware
processes the given driver command and translates them to STEs, then
writes them to the device memory in the current steering tables.
This process is slow due to the architecture of the command interface and
the processing complexity of each rule.
The highlight of this patchset is to cut the middle man (The firmware) and
do steering rules programming into device directly from the driver, with
no firmware intervention whatsoever.
Motivation:
-----------
Software (driver managed) steering allows for high rule insertion rates
compared to the FW steering described above, this is achieved by using
internal RDMA writes to the device owned memory instead of the slow
command interface to program steering rules.
Software (driver managed) steering, doesn't depend on new FW
for new steering functionality, new implementations can be done in the
driver skipping the FW layer.
Performance:
------------
The insertion rate on a single core using the new approach allows
programming ~300K rules per sec. (Done via direct raw test to the new mlx5
sw steering layer, without any kernel layer involved).
Test: TC L2 rules
33K/s with Software steering (this patchset).
5K/s with FW and current driver.
This will improve OVS based solution performance.
Architecture and implementation details:
----------------------------------------
Software steering will be dynamically selected via devlink device
parameter. Example:
$ devlink dev param show pci/0000:06:00.0 name flow_steering_mode
pci/0000:06:00.0:
name flow_steering_mode type driver-specific
values:
cmode runtime value smfs
mlx5 software steering module a.k.a (DR - Direct Rule) is implemented
and contained in mlx5/core/steering directory and controlled by
MLX5_SW_STEERING kconfig flag.
mlx5 core steering layer (fs_core) already provides a shim layer for
implementing different steering mechanisms, software steering will
leverage that as seen at the end of this series.
When Software Steering for a specific steering domain
(NIC/RDMA/Vport/ESwitch, etc ..) is supported, it will cause rules
targeting this domain to be created using SW steering instead of FW.
The implementation includes:
Domain - The steering domain is the object that all other object resides
in. It holds the memory allocator, send engine, locks and other shared
data needed by lower objects such as table, matcher, rule, action.
Each domain can contain multiple tables. Domain is equivalent to
namespaces e.g (NIC/RDMA/Vport/ESwitch, etc ..) as implemented
currently in mlx5_core fs_core (flow steering core).
Table - Table objects are used for holding multiple matchers, each table
has a level used to prevent processing loops. Packets are being
directed to this table once it is set as the root table, this is done
by fs_core using a FW command. A packet is being processed inside the
table matcher by matcher until a successful hit, otherwise the packet
will perform the default action.
Matcher - Matchers objects are used to specify the fields mask for
matching when processing a packet. A matcher belongs to a table, each
matcher can hold multiple rules, each rule with different matching
values corresponding to the matcher mask. Each matcher has a priority
used for rule processing order inside the table.
Action - Action objects are created to specify different steering actions
such as count, reformat (encapsulate, decapsulate, ...), modify
header, forward to table and many other actions. When creating a rule
a sequence of actions can be provided to be executed on a successful
match.
Rule - Rule objects are used to specify a specific match on packets as
well as the actions that should be executed. A rule belongs to a
matcher.
STE - This layer is used to hold the specific STE format for the device
and to convert the requested rule to STEs. Each rule is constructed of
an STE chain, Multiple rules construct a steering graph. Each node in
the graph is a hash table containing multiple STEs. The index of each
STE in the hash table is being calculated using a CRC32 hash function.
Memory pool - Used for managing and caching device owned memory for rule
insertion. The memory is being allocated using DM (device memory) API.
Communication with device - layer for standard RDMA operation using RC QP
to configure the device steering.
Command utility - This module holds all of the FW commands that are
required for SW steering to function.
Patch planning and files:
-------------------------
1) First patch, adds the support to Add flow steering actions to fs_cmd
shim layer.
2) Next 12 patch will add a file per each Software steering
functionality/module as described above. (See patches with title: DR, *)
3) Add CONFIG_MLX5_SW_STEERING for software steering support and enable
build with the new files
4) Next two patches will add the support for software steering in mlx5
steering shim layer
net/mlx5: Add API to set the namespace steering mode
net/mlx5: Add direct rule fs_cmd implementation
5) Last two patches will add the new devlink parameter to select mlx5
steering mode, will be valid only for switchdev mode for now.
Two modes are supported:
1. DMFS - Device managed flow steering
2. SMFS - Software/Driver managed flow steering.
In the DMFS mode, the HW steering entities are created through the
FW. In the SMFS mode this entities are created though the driver
directly.
The driver will use the devlink steering mode only if the steering
domain supports it, for now SMFS will manages only the switchdev
eswitch steering domain.
User command examples:
- Set SMFS flow steering mode::
$ devlink dev param set pci/0000:06:00.0 name flow_steering_mode value "smfs" cmode runtime
- Read device flow steering mode::
$ devlink dev param show pci/0000:06:00.0 name flow_steering_mode
pci/0000:06:00.0:
name flow_steering_mode type driver-specific
values:
cmode runtime value smfs
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Add new parameter (flow_steering_mode) to control the flow steering
mode of the driver.
Two modes are supported:
1. DMFS - Device managed flow steering
2. SMFS - Software/Driver managed flow steering.
In the DMFS mode, the HW steering entities are created through the
FW. In the SMFS mode this entities are created though the driver
directly.
The driver will use the devlink steering mode only if the steering
domain supports it, for now SMFS will manages only the switchdev eswitch
steering domain.
User command examples:
- Set SMFS flow steering mode::
$ devlink dev param set pci/0000:06:00.0 name flow_steering_mode value "smfs" cmode runtime
- Read device flow steering mode::
$ devlink dev param show pci/0000:06:00.0 name flow_steering_mode
pci/0000:06:00.0:
name flow_steering_mode type driver-specific
values:
cmode runtime value smfs
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Remove the data-ready-gpio property in favor of the DT standard
interrupt-parent and interrupts.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Here are some small char and misc driver fixes for reported issues for
5.3-rc7
Also included in here is the documentation for how we are handling
hardware issues under embargo that everyone has finally agreed on, as
well as a MAINTAINERS update for the suckers who agreed to handle the
LICENSES/ files.
All of these have been in linux-next last week with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small char and misc driver fixes for reported issues for
5.3-rc7
Also included in here is the documentation for how we are handling
hardware issues under embargo that everyone has finally agreed on, as
well as a MAINTAINERS update for the suckers who agreed to handle the
LICENSES/ files.
All of these have been in linux-next last week with no reported
issues"
* tag 'char-misc-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
fsi: scom: Don't abort operations for minor errors
vmw_balloon: Fix offline page marking with compaction
VMCI: Release resource if the work is already queued
Documentation/process: Embargoed hardware security issues
lkdtm/bugs: fix build error in lkdtm_EXHAUST_STACK
mei: me: add Tiger Lake point LP device ID
intel_th: pci: Add Tiger Lake support
intel_th: pci: Add support for another Lewisburg PCH
stm class: Fix a double free of stm_source_device
MAINTAINERS: add entry for LICENSES and SPDX stuff
fpga: altera-ps-spi: Fix getting of optional confd gpio
It is a 3-Port 10/100 Ethernet Switch with 1588v2 PTP.
Signed-off-by: Razvan Stefanescu <razvan.stefanescu@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The addition of unaligned chunks mode, the documentation needs to be
updated to indicate that the incoming addr to the fill ring will only be
masked if the user application is run in the aligned chunk mode. This patch
also adds a line to explicitly indicate that the incoming addr will not be
masked if running the user application in the unaligned chunk mode.
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
As per the discussion with Nicolas Ferre[0], rename the compatible property
to a more appropriate and specific string.
[0] https://lore.kernel.org/netdev/CAJ2_jOFEVZQat0Yprg4hem4jRrqkB72FKSeQj4p8P5KA-+rgww@mail.gmail.com/
Signed-off-by: Yash Shah <yash.shah@sifive.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Paul Walmsley <paul.walmsley@sifive.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
To address the requirements of embargoed hardware issues, like Meltdown,
Spectre, L1TF etc. it is necessary to define and document a process for
handling embargoed hardware security issues.
Following the discussion at the maintainer summit 2018 in Edinburgh
(https://lwn.net/Articles/769417/) the volunteered people have worked
out a process and a Memorandum of Understanding. The latter addresses
the fact that the Linux kernel community cannot sign NDAs for various
reasons.
The initial contact point for hardware security issues is different from
the regular kernel security contact to provide a known and neutral
interface for hardware vendors and researchers. The initial primary
contact team is proposed to be staffed by Linux Foundation Fellows, who
are not associated to a vendor or a distribution and are well connected
in the industry as a whole.
The process is designed with the experience of the past incidents in
mind and tries to address the remaining gaps, so future (hopefully rare)
incidents can be handled more efficiently. It won't remove the fact,
that most of this has to be done behind closed doors, but it is set up
to avoid big bureaucratic hurdles for individual developers.
The process is solely for handling hardware security issues and cannot
be used for regular kernel (software only) security bugs.
This memo can help with hardware companies who, and I quote, "[my
manager] doesn't want to bet his job on the list keeping things secret."
This despite numerous leaks directly from that company over the years,
and none ever so far from the kernel security team. Cognitive
dissidence seems to be a requirement to be a good manager.
To accelerate the adoption of this process, we introduce the concept of
ambassadors in participating companies. The ambassadors are there to
guide people to comply with the process, but are not automatically
involved in the disclosure of a particular incident.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Acked-by: Ben Hutchings <ben@decadent.org.uk>
Reviewed-by: Tyler Hicks <tyhicks@canonical.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Jiri Kosina <jkosina@suse.cz>
Link: https://lore.kernel.org/r/20190815212505.GC12041@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch the removes the recently added mediatek,physpeed property.
Use the fixed-link property speed = <2500> to set the phy in 2.5Gbit.
See mt7622-bananapi-bpi-r64.dts for a working example.
Signed-off-by: René van Dorst <opensource@vdorst.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Support for Edge Triggered IRQs in ARC IDU intc
- other fixes here and there
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Merge tag 'arc-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC updates from Vineet Gupta:
- support for Edge Triggered IRQs in ARC IDU intc
- other fixes here and there
* tag 'arc-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
arc: prefer __section from compiler_attributes.h
dt-bindings: IDU-intc: Add support for edge-triggered interrupts
dt-bindings: IDU-intc: Clean up documentation
ARCv2: IDU-intc: Add support for edge-triggered interrupts
ARC: unwind: Mark expected switch fall-throughs
ARC: [plat-hsdk]: allow to switch between AXI DMAC port configurations
ARC: fix typo in setup_dma_ops log message
ARCv2: entry: early return from exception need not clear U & DE bits
This updates the documentation for supporting an optional extra interrupt
cell to specify edge vs level triggered.
Signed-off-by: Mischa Jonker <mischa.jonker@synopsys.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Pull x86 fixes from Thomas Gleixner:
"A few fixes for x86:
- Fix a boot regression caused by the recent bootparam sanitizing
change, which escaped the attention of all people who reviewed that
code.
- Address a boot problem on machines with broken E820 tables caused
by an underflow which ended up placing the trampoline start at
physical address 0.
- Handle machines which do not advertise a legacy timer of any form,
but need calibration of the local APIC timer gracefully by making
the calibration routine independent from the tick interrupt. Marked
for stable as well as there seems to be quite some new laptops
rolled out which expose this.
- Clear the RDRAND CPUID bit on AMD family 15h and 16h CPUs which are
affected by broken firmware which does not initialize RDRAND
correctly after resume. Add a command line parameter to override
this for machine which either do not use suspend/resume or have a
fixed BIOS. Unfortunately there is no way to detect this on boot,
so the only safe decision is to turn it off by default.
- Prevent RFLAGS from being clobbers in CALL_NOSPEC on 32bit which
caused fast KVM instruction emulation to break.
- Explain the Intel CPU model naming convention so that the repeating
discussions come to an end"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/retpoline: Don't clobber RFLAGS during CALL_NOSPEC on i386
x86/boot: Fix boot regression caused by bootparam sanitizing
x86/CPU/AMD: Clear RDRAND CPUID bit on AMD family 15h/16h
x86/boot/compressed/64: Fix boot on machines with broken E820 table
x86/apic: Handle missing global clockevent gracefully
x86/cpu: Explain Intel model naming convention
Now that we have the DT validation in place, let's convert the device tree
bindings for the Synopsys DWMAC Glue for Amlogic SoCs over to a YAML schemas.
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The Amlogic Meson DWMAC glue bindings needs a second reg cells for the
glue registers, thus update the reg minItems/maxItems to allow more
than a single reg cell.
Also update the allwinner,sun7i-a20-gmac.yaml derivative schema to specify
maxItems to 1.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'pci-v5.3-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
- Reset both NVIDIA GPU and HDA in ThinkPad P50 quirk, which was broken
by another quirk that enabled the HDA device (Lyude Paul)
- Fix pciebus-howto.rst documentation filename typo (Bjorn Helgaas)
* tag 'pci-v5.3-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
Documentation PCI: Fix pciebus-howto.rst filename typo
PCI: Reset both NVIDIA GPU and HDA in ThinkPad P50 workaround
There have been reports of RDRAND issues after resuming from suspend on
some AMD family 15h and family 16h systems. This issue stems from a BIOS
not performing the proper steps during resume to ensure RDRAND continues
to function properly.
RDRAND support is indicated by CPUID Fn00000001_ECX[30]. This bit can be
reset by clearing MSR C001_1004[62]. Any software that checks for RDRAND
support using CPUID, including the kernel, will believe that RDRAND is
not supported.
Update the CPU initialization to clear the RDRAND CPUID bit for any family
15h and 16h processor that supports RDRAND. If it is known that the family
15h or family 16h system does not have an RDRAND resume issue or that the
system will not be placed in suspend, the "rdrand=force" kernel parameter
can be used to stop the clearing of the RDRAND CPUID bit.
Additionally, update the suspend and resume path to save and restore the
MSR C001_1004 value to ensure that the RDRAND CPUID setting remains in
place after resuming from suspend.
Note, that clearing the RDRAND CPUID bit does not prevent a processor
that normally supports the RDRAND instruction from executing it. So any
code that determined the support based on family and model won't #UD.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Chen Yu <yu.c.chen@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: "linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>
Cc: "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: <stable@vger.kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "x86@kernel.org" <x86@kernel.org>
Link: https://lkml.kernel.org/r/7543af91666f491547bd86cebb1e17c66824ab9f.1566229943.git.thomas.lendacky@amd.com
Pull networking fixes from David Miller:
1) Fix jmp to 1st instruction in x64 JIT, from Alexei Starovoitov.
2) Severl kTLS fixes in mlx5 driver, from Tariq Toukan.
3) Fix severe performance regression due to lack of SKB coalescing of
fragments during local delivery, from Guillaume Nault.
4) Error path memory leak in sch_taprio, from Ivan Khoronzhuk.
5) Fix batched events in skbedit packet action, from Roman Mashak.
6) Propagate VLAN TX offload to hw_enc_features in bond and team
drivers, from Yue Haibing.
7) RXRPC local endpoint refcounting fix and read after free in
rxrpc_queue_local(), from David Howells.
8) Fix endian bug in ibmveth multicast list handling, from Thomas
Falcon.
9) Oops, make nlmsg_parse() wrap around the correct function,
__nlmsg_parse not __nla_parse(). Fix from David Ahern.
10) Memleak in sctp_scend_reset_streams(), fro Zheng Bin.
11) Fix memory leak in cxgb4, from Wenwen Wang.
12) Yet another race in AF_PACKET, from Eric Dumazet.
13) Fix false detection of retransmit failures in tipc, from Tuong
Lien.
14) Use after free in ravb_tstamp_skb, from Tho Vu.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (101 commits)
ravb: Fix use-after-free ravb_tstamp_skb
netfilter: nf_tables: map basechain priority to hardware priority
net: sched: use major priority number as hardware priority
wimax/i2400m: fix a memory leak bug
net: cavium: fix driver name
ibmvnic: Unmap DMA address of TX descriptor buffers after use
bnxt_en: Fix to include flow direction in L2 key
bnxt_en: Use correct src_fid to determine direction of the flow
bnxt_en: Suppress HWRM errors for HWRM_NVM_GET_VARIABLE command
bnxt_en: Fix handling FRAG_ERR when NVM_INSTALL_UPDATE cmd fails
bnxt_en: Improve RX doorbell sequence.
bnxt_en: Fix VNIC clearing logic for 57500 chips.
net: kalmia: fix memory leaks
cx82310_eth: fix a memory leak bug
bnx2x: Fix VF's VLAN reconfiguration in reload.
Bluetooth: Add debug setting for changing minimum encryption key size
tipc: fix false detection of retransmit failures
lan78xx: Fix memory leaks
MAINTAINERS: r8169: Update path to the driver
MAINTAINERS: PHY LIBRARY: Update files in the record
...
Add compatible for the ethernet IP core on MT7628/88 SoCs. Its
compatible with the older Ralink Rt5350F SoC. And OpenWrt already
uses this compatible string for the MT76x8.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: René van Dorst <opensource@vdorst.com>
Cc: Daniel Golle <daniel@makrotopia.org>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: John Crispin <john@phrozen.org>
Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add initial documentation of the devlink-trap mechanism, explaining the
background, motivation and the semantics of the interface.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This change adds bindings for the Analog Devices ADIN PHY driver, detailing
all the properties implemented by the driver.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
One additional interrupt needs to be described within the Ocelot device
tree node: the PTP ready one. This patch documents the binding needed to
do so.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
One additional register range needs to be described within the Ocelot
device tree node: the PTP. This patch documents the binding needed to do
so.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vitaly Gaiduk