Vladimir Oltean [Mon, 26 Jul 2021 16:55:33 +0000 (19:55 +0300)]
net: dsa: sja1105: deny more than one VLAN-aware bridge
With tag_sja1105.c's only ability being to perform an imprecise RX
procedure and identify whether a packet comes from a VLAN-aware bridge
or not, we have no way to determine whether a packet with VLAN ID 5
comes from, say, br0 or br1. Actually we could, but it would mean that
we need to restrict all VLANs from br0 to be different from all VLANs
from br1, and this includes the default_pvid, which makes a setup with 2
VLAN-aware bridges highly imprectical.
The fact of the matter is that this isn't even that big of a practical
limitation, since even with a single VLAN-aware bridge we can pretty
much enforce forwarding isolation based on the VLAN port membership.
So in the end, tell the user that they need to model their setup using a
single VLAN-aware bridge.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Mon, 26 Jul 2021 16:55:32 +0000 (19:55 +0300)]
net: dsa: sja1105: deny 8021q uppers on ports
Now that best-effort VLAN filtering is gone and we are left with the
imprecise RX and imprecise TX based in VLAN-aware mode, where the tagger
just guesses the source port based on plausibility of the VLAN ID, 8021q
uppers installed on top of a standalone port, while other ports of that
switch are under a VLAN-aware bridge don't quite "just work".
In fact it could be possible to restrict the VLAN IDs used by the 8021q
uppers to not be shared with VLAN IDs used by that VLAN-aware bridge,
but then the tagger needs to be patched to search for 8021q uppers too,
not just for the "designated bridge port" which will be introduced in a
later patch.
I haven't given a possible implementation full thought, it seems maybe
possible but not worth the effort right now. The only certain thing is
that currently the tagger won't be able to figure out the source port
for these packets because they will come with the VLAN ID of the 8021q
upper and are no longer retagged to a tag_8021q sub-VLAN like the best
effort VLAN filtering code used to do. So just deny these for the
moment.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Mon, 26 Jul 2021 16:55:31 +0000 (19:55 +0300)]
net: dsa: sja1105: delete vlan delta save/restore logic
With the best_effort_vlan_filtering mode now gone, the driver does not
have 3 operating modes anymore (VLAN-unaware, VLAN-aware and best effort),
but only 2.
The idea is that we will gain support for network stack I/O through a
VLAN-aware bridge, using the data plane offload framework (imprecise RX,
imprecise TX). So the VLAN-aware use case will be more functional.
But standalone ports that are part of the same switch when some other
ports are under a VLAN-aware bridge should work too. Termination on
those should work through the tag_8021q RX VLAN and TX VLAN.
This was not possible using the old logic, because:
- in VLAN-unaware mode, only the tag_8021q VLANs were committed to hw
- in VLAN-aware mode, only the bridge VLANs were committed to hw
- in best-effort VLAN mode, both the tag_8021q and bridge VLANs were
committed to hw
The strategy for the new VLAN-aware mode is to allow the bridge and the
tag_8021q VLANs to coexist in the VLAN table at the same time.
[ yes, we need to make sure that the bridge cannot install a tag_8021q
VLAN, but ]
This means that the save/restore logic introduced by commit
ec5ae61076d0
("net: dsa: sja1105: save/restore VLANs using a delta commit method")
does not serve a purpose any longer. We can delete it and restore the
old code that simply adds a VLAN to the VLAN table and calls it a day.
Note that we keep the sja1105_commit_pvid() function from those days,
but adapt it slightly. Ports that are under a VLAN-aware bridge use the
bridge's pvid, ports that are standalone or under a VLAN-unaware bridge
use the tag_8021q pvid, for local termination or VLAN-unaware forwarding.
Now, when the vlan_filtering property is toggled for the bridge, the
pvid of the ports beneath it is the only thing that's changing, we no
longer delete some VLANs and restore others.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Mon, 26 Jul 2021 16:55:30 +0000 (19:55 +0300)]
net: dsa: sja1105: remove redundant re-assignment of pointer table
The pointer table is being re-assigned with a value that is never
read. The assignment is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Mon, 26 Jul 2021 16:55:29 +0000 (19:55 +0300)]
net: bridge: add a helper for retrieving port VLANs from the data path
Introduce a brother of br_vlan_get_info() which is protected by the RCU
mechanism, as opposed to br_vlan_get_info() which relies on taking the
write-side rtnl_mutex.
This is needed for drivers which need to find out whether a bridge port
has a VLAN configured or not. For example, certain DSA switches might
not offer complete source port identification to the CPU on RX, just the
VLAN in which the packet was received. Based on this VLAN, we cannot set
an accurate skb->dev ingress port, but at least we can configure one
that behaves the same as the correct one would (this is possible because
DSA sets skb->offload_fwd_mark = 1).
When we look at the bridge RX handler (br_handle_frame), we see that
what matters regarding skb->dev is the VLAN ID and the port STP state.
So we need to select an skb->dev that has the same bridge VLAN as the
packet we're receiving, and is in the LEARNING or FORWARDING STP state.
The latter is easy, but for the former, we should somehow keep a shadow
list of the bridge VLANs on each port, and a lookup table between VLAN
ID and the 'designated port for imprecise RX'. That is rather
complicated to keep in sync properly (the designated port per VLAN needs
to be updated on the addition and removal of a VLAN, as well as on the
join/leave events of the bridge on that port).
So, to avoid all that complexity, let's just iterate through our finite
number of ports and ask the bridge, for each packet: "do you have this
VLAN configured on this port?".
Cc: Roopa Prabhu <roopa@nvidia.com>
Cc: Nikolay Aleksandrov <nikolay@nvidia.com>
Cc: Ido Schimmel <idosch@nvidia.com>
Cc: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Mon, 26 Jul 2021 16:55:28 +0000 (19:55 +0300)]
net: bridge: update BROPT_VLAN_ENABLED before notifying switchdev in br_vlan_filter_toggle
SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING is notified by the bridge from
two places:
- nbp_vlan_init(), during bridge port creation
- br_vlan_filter_toggle(), during a netlink/sysfs/ioctl change requested
by user space
If a switchdev driver uses br_vlan_enabled(br_dev) inside its handler
for the SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING attribute notifier,
different things will be seen depending on whether the bridge calls from
the first path or the second:
- in nbp_vlan_init(), br_vlan_enabled() reflects the current state of
the bridge
- in br_vlan_filter_toggle(), br_vlan_enabled() reflects the past state
of the bridge
This can lead in some cases to complications in driver implementation,
which can be avoided if these could reliably use br_vlan_enabled().
Nothing seems to depend on this behavior, and it seems overall more
straightforward for br_vlan_enabled() to return the proper value even
during the SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING notifier, so
temporarily enable the bridge option, then revert it if the switchdev
notifier failed.
Cc: Roopa Prabhu <roopa@nvidia.com>
Cc: Nikolay Aleksandrov <nikolay@nvidia.com>
Cc: Ido Schimmel <idosch@nvidia.com>
Cc: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 26 Jul 2021 21:32:24 +0000 (22:32 +0100)]
Merge tag 'mlx5-updates-2021-07-24' of git://git./linux/kernel/git/saeed/linux
mlx5-updates-2021-07-24
This series aims to reduce coupling in mlx5e, particularly between RX
resources (TIRs, RQTs) and numerous code units that use them.
This refactoring is required for upcoming features, ADQ and TX lag
hashing.
The issue with the current code is that TIRs and RQTs are unmanaged,
different places all over the driver create, destroy, track and
configure them, often in an uncoordinated way. The responsibilities of
different units become vague, leading to a lot of hidden dependencies
between numerous units and tight coupling between them, which is prone
to bugs and hard to maintain.
The result of this refactoring is:
1. Creating a manager for RX resources, that controls their lifecycle
and provides a clear API, which restricts the set of actions that other
units can do.
2. Using object-oriented approach for TIRs, RQTs and RX resource
manager (struct mlx5e_rx_res).
3. Fixing a few bugs and misbehaviors found during the refactoring.
4. Reducing the amount of dependencies, removing hidden dependencies,
making them one-directional and organizing the code in clear abstraction
layers.
5. Explicitly exposing the remaining weird dependencies.
6. Simplifying and organizing code that creates and modifies TIRs and
RQTs.
Saeed Mahameed says:
====================
mlx5 updates 2021-07-24
This series provides some refactoring to mlx5e RX resource management,
it is required for upcoming ADQ and TX lag hashing features.
The first two patches in this series :
net/mlx5e: Prohibit inner indir TIRs in IPoIB
net/mlx5e: Block LRO if firmware asks for tunneled LRO
Were supposed to go to net, but due to dependency and timing they were
included here.
I would appreciate it if you'd apply them to net and mark for -stable.
For more information please see tag log below.
Please pull and let me know if there is any problem.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 26 Jul 2021 21:07:29 +0000 (22:07 +0100)]
Merge tag 'linux-can-next-for-5.15-
20210725' of git://git./linux/kernel/git/mkl/linux-can-next
linux-can-next-for-5.15-
20210725
Marc Kleine-Budde says:
====================
pull-request: can-next 2021-07-25
this is a pull request of 46 patches for net-next/master.
The first 6 patches target the CAN J1939 protocol. One is from
gushengxian, fixing a grammatical error, 5 are by me fixing a checkpatch
warning, make use of the fallthrough pseudo-keyword, and use
consistent variable naming.
The next 3 patches target the rx-offload helper, are by me and improve
the performance and fix the local softirq work pending error, when
napi_schedule() is called from threaded IRQ context.
The next 3 patches are by Vincent Mailhol and me update the CAN
bittiming and transmitter delay compensation, the documentation for
the struct can_tdc is fixed, clear data_bittiming if FD mode is turned
off and a redundant check is removed.
Followed by 4 patches targeting the m_can driver. Faiz Abbas's patches
add support for CAN PHY via the generic phy subsystem. Yang Yingliang
converts the driver to use devm_platform_ioremap_resource_byname().
And a patch by me which removes the unused support for custom bit
timing.
Andy Shevchenko contributes 2 patches for the mcp251xfd driver to
prepare the driver for ACPI support. A patch by me adds support for
shared IRQ handlers.
Zhen Lei contributes 3 patches to convert the esd_usb2, janz-ican3 and
the at91_can driver to make use of the DEVICE_ATTR_RO/RW() macros.
The next 8 patches are by Peng Li and provide general cleanups for the
at91_can driver.
The next 7 patches target the peak driver. Frist 2 cleanup patches by
me for the peak_pci driver, followed by Stephane Grosjean' patch to
print the name and firmware version of the detected hardware. The
peak_usb driver gets a cleanup patch, loopback and one-shot mode and
an upgrading of the bus state change handling in Stephane Grosjean's
patches.
Vincent Mailhol provides 6 cleanup patches for the etas_es58x driver.
In the last 3 patches Angelo Dureghello add support for the mcf5441x
SoC to the flexcan driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Maxim Mikityanskiy [Wed, 7 Apr 2021 10:33:46 +0000 (13:33 +0300)]
net/mlx5e: Use the new TIR API for kTLS
One of the previous commits introduced a dedicated object for a TIR.
kTLS code creates a TIR per connection using the low-level mlx5_core
API. This commit converts it to the new mlx5e_tir API.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Wed, 7 Apr 2021 09:53:27 +0000 (12:53 +0300)]
net/mlx5e: Move management of indir traffic types to rx_res
This commit moves the responsibility of keeping the RSS configuration
for different traffic types to en/rx_res.{c,h}, hiding the
implementation details behind the new getters, and abandons all usage of
struct mlx5e_tirc_config, which is no longer useful and superseded by
struct mlx5e_rss_params_traffic_type.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Tue, 6 Apr 2021 17:33:40 +0000 (20:33 +0300)]
net/mlx5e: Convert TIR to a dedicated object
Code related to TIR is now encapsulated into a dedicated object and put
into new files en/tir.{c,h}. All usages are converted.
The Builder pattern is used to initialize a TIR. It allows to create a
multitude of different configurations, turning on and off some specific
features in different combinations, without having long parameter lists,
initializers per usage and repeating code in initializers.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Tue, 6 Apr 2021 15:58:30 +0000 (18:58 +0300)]
net/mlx5e: Create struct mlx5e_rss_params_hash
This commit introduces a new struct to store RSS hash parameters: hash
function and hash key. The existing usages are changed to use the new
struct.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Tue, 6 Apr 2021 08:20:42 +0000 (11:20 +0300)]
net/mlx5e: Remove mdev from mlx5e_build_indir_tir_ctx_common()
In order to drop a dependency to mdev and make the function more
universal, stop passing mdev to mlx5e_build_indir_tir_ctx_common() and
pass transport domain directly instead. It also prepares this function
to be used in other contexts that need a custom transport domain, such
as hairpin.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Tue, 6 Apr 2021 07:32:47 +0000 (10:32 +0300)]
net/mlx5e: Remove lro_param from mlx5e_build_indir_tir_ctx_common()
In order to reduce the list of parameters and to define clearer
responsibility for mlx5e_build_indir_tir_ctx_common(), stop passing
lro_param and instead call mlx5e_build_tir_ctx_lro() directly where
needed.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Tue, 6 Apr 2021 07:23:26 +0000 (10:23 +0300)]
net/mlx5e: Remove mlx5e_priv usage from mlx5e_build_*tir_ctx*()
The functions that build TIR context for TIR create and modify commands
used to depend on struct mlx5e_priv and fetch some values directly from
different places. It increased coupling of code and the chance of weird
misbehavior due to hidden complex dependencies.
As the first step, this commit removes the priv parameter from these
functions. Instead, the necessary values are passed directly.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Tue, 6 Apr 2021 06:40:07 +0000 (09:40 +0300)]
net/mlx5e: Use mlx5e_rqt_get_rqtn to access RQT hardware id
In order to abstract from implementation details of mlx5e_rqt, use the
mlx5e_rqt_get_rqtn getter instead of accessing the field directly.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Mon, 5 Apr 2021 17:53:08 +0000 (20:53 +0300)]
net/mlx5e: Take RQT out of TIR and group RX resources
RQT is not part of TIR, as multiple TIRs may point to the same RQT, as
it happens with indir_tir and inner_indir_tir. These instances of a TIR
don't use the embedded RQT.
This commit takes RQT out of TIR, making them independent. The RQTs are
placed into struct mlx5e_rx_res, and items in that struct are regrouped
by functionality: RSS, channels and PTP.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Mon, 5 Apr 2021 15:27:40 +0000 (18:27 +0300)]
net/mlx5e: Move RX resources to a separate struct
This commit moves RQTs and TIRs to a separate struct that is allocated
dynamically in profiles that support these RX resources (all profiles,
except IPoIB PKey). It also allows to remove rqt_enabled flags, as RQTs
are always enabled in profiles that support RX resources.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Tue, 6 Apr 2021 07:47:45 +0000 (10:47 +0300)]
net/mlx5e: Move mlx5e_build_rss_params() call to init_rx
RSS params belong to the RX side initialization. Move them from
profile->init to profile->init_rx stage to allow the next commit to move
rss_params out of priv to a dynamically-allocated struct.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Fri, 2 Apr 2021 19:58:48 +0000 (22:58 +0300)]
net/mlx5e: Convert RQT to a dedicated object
Code related to RQT is now encapsulated into a dedicated object and put
into new files en/rqt.{c,h}. All usages are converted.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Tue, 13 Apr 2021 14:06:45 +0000 (17:06 +0300)]
net/mlx5e: Check if inner FT is supported outside of create/destroy functions
Move the mlx5e_tunnel_inner_ft_supported() check for inner flow tables
support outside of mlx5e_create_inner_ttc_table() and
mlx5e_destroy_inner_ttc_table(). It allows to avoid accessing invalid
TIRNs of inner indirect TIRs. In a later commit these accesses will be
replaced by getters that will WARN if inner indirect TIRs don't exist.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Fri, 23 Apr 2021 16:14:37 +0000 (19:14 +0300)]
net/mlx5: Take TIR destruction out of the TIR list lock
res->td.list_lock protects the list of TIRs. There is no point to call
mlx5_core_destroy_tir() and invoke a firmware command under this lock.
This commit moves this call outside of the lock and puts it after
deleting the TIR from the list to ensure that TIRs are always alive
while in the list.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Fri, 23 Apr 2021 17:34:48 +0000 (20:34 +0300)]
net/mlx5e: Block LRO if firmware asks for tunneled LRO
This commit does a cleanup in LRO configuration.
LRO is a parameter of an RQ, but its state is changed by modifying a TIR
related to the RQ.
The current status: LRO for tunneled packets is not supported in the
driver, inner TIRs may enable LRO on creation, but LRO status of inner
TIRs isn't changed in mlx5e_modify_tirs_lro(). This is inconsistent, but
as long as the firmware doesn't declare support for tunneled LRO, it
works, because the same RQs are shared between the inner and outer TIRs.
This commit does two fixes:
1. If the firmware has the tunneled LRO capability, LRO is blocked
altogether, because it's not possible to block it for inner TIRs only,
when the same RQs are shared between inner and outer TIRs, and the
driver won't be able to handle tunneled LRO traffic.
2. mlx5e_modify_tirs_lro() is patched to modify LRO state for all TIRs,
including inner ones, because all TIRs related to an RQ should agree on
their LRO state.
Fixes:
7b3722fa9ef6 ("net/mlx5e: Support RSS for GRE tunneled packets")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Maxim Mikityanskiy [Thu, 8 Apr 2021 14:20:04 +0000 (17:20 +0300)]
net/mlx5e: Prohibit inner indir TIRs in IPoIB
TIR's rx_hash_field_selector_inner can be enabled only when
tunneled_offload_en = 1. tunneled_offload_en is filled according to the
tunneled_offload_en field in struct mlx5e_params, which is false in the
IPoIB profile. On the other hand, the IPoIB profile passes inner_ttc =
true to mlx5e_create_indirect_tirs, which potentially allows the latter
function to attempt to create inner indirect TIRs without having
tunneled_offload_en set.
This commit prohibits this behavior by passing inner_ttc = false to
mlx5e_create_indirect_tirs. The latter function won't attempt to create
inner indirect TIRs.
As inner indirect TIRs are not created in the IPoIB profile (this commit
blocks it explicitly, and even before they would have failed to be
created), the call to mlx5e_create_inner_ttc_table in
mlx5i_create_flow_steering is a no-op and can be removed.
Fixes:
46dc933cee82 ("net/mlx5e: Provide explicit directive if to create inner indirect tirs")
Fixes:
458821c72bd0 ("net/mlx5e: IPoIB, Add inner TTC table to IPoIB flow steering")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Jason Wang [Sun, 25 Jul 2021 14:42:21 +0000 (22:42 +0800)]
net: ixp4xx_hss: use dma_pool_zalloc
The dma_pool_zalloc combines dma_pool_alloc/memset. Therefore, the
dma_pool_alloc/memset can be replaced with dma_pool_zalloc which is
more compact.
Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yinjun Zhang [Mon, 26 Jul 2021 11:16:34 +0000 (13:16 +0200)]
nfp: add support for coalesce adaptive feature
Use dynamic interrupt moderation library to implement coalesce
adaptive feature for nfp driver.
Signed-off-by: Yinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: Yu Xiao <yu.xiao@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Laing [Mon, 26 Jul 2021 05:30:03 +0000 (17:30 +1200)]
net: mhi: Improve MBIM packet counting
Packets are aggregated over the MBIM link and currently the MHI net
device will count each aggregated packet rather then the actual
packets themselves.
If a protocol handler module is specified, use that to count the
packets rather than directly in the MHI net device. This is in line
with the behaviour of the USB net cdc_mbim driver.
Signed-off-by: Richard Laing <richard.laing@alliedtelesis.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
wengjianfeng [Mon, 26 Jul 2021 03:29:17 +0000 (11:29 +0800)]
nfc: s3fwrn5: remove unnecessary label
Simplify the code by removing unnecessary label and returning directly.
Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 26 Jul 2021 11:16:15 +0000 (12:16 +0100)]
Merge branch 'hns3-devlink'
Guangbin Huang says:
====================
net: hns3: add support devlink
This series adds devlink support for the HNS3 ethernet driver.
change log:
V2 -> V3:
1. remove two patches of setting rx/tx buffer size by devlink param.
V1 -> V2:
1. add more detailed descriptions of parameters in document hns3.rst.
RFC -> V1:
1. use DEVLINK_INFO_VERSION_GENERIC_FW instead of "fw-version".
2. add devlink documentation for hns3 driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Hao Chen [Mon, 26 Jul 2021 02:47:07 +0000 (10:47 +0800)]
net: hns3: add devlink reload support for VF
Add devlink reload support for HNS3 ethernet VF driver.
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hao Chen [Mon, 26 Jul 2021 02:47:06 +0000 (10:47 +0800)]
net: hns3: add devlink reload support for PF
Add devlink reload support for HNS3 ethernet PF driver.
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yufeng Mo [Mon, 26 Jul 2021 02:47:05 +0000 (10:47 +0800)]
net: hns3: add support for devlink get info for VF
Add devlink get info support for HNS3 ethernet VF driver.
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yufeng Mo [Mon, 26 Jul 2021 02:47:04 +0000 (10:47 +0800)]
net: hns3: add support for devlink get info for PF
Add devlink get info support for HNS3 ethernet PF driver.
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yufeng Mo [Mon, 26 Jul 2021 02:47:03 +0000 (10:47 +0800)]
net: hns3: add support for registering devlink for VF
Add devlink register support for HNS3 ethernet VF driver.
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yufeng Mo [Mon, 26 Jul 2021 02:47:02 +0000 (10:47 +0800)]
net: hns3: add support for registering devlink for PF
Add devlink register support for HNS3 ethernet PF driver.
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hao Chen [Mon, 26 Jul 2021 02:47:01 +0000 (10:47 +0800)]
devlink: add documentation for hns3 driver
Add a file to document devlink support for hns3 driver, now support devlink
info and devlink reload.
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Fri, 23 Jul 2021 17:25:36 +0000 (13:25 -0400)]
tipc: fix an use-after-free issue in tipc_recvmsg
syzbot reported an use-after-free crash:
BUG: KASAN: use-after-free in tipc_recvmsg+0xf77/0xf90 net/tipc/socket.c:1979
Call Trace:
tipc_recvmsg+0xf77/0xf90 net/tipc/socket.c:1979
sock_recvmsg_nosec net/socket.c:943 [inline]
sock_recvmsg net/socket.c:961 [inline]
sock_recvmsg+0xca/0x110 net/socket.c:957
tipc_conn_rcv_from_sock+0x162/0x2f0 net/tipc/topsrv.c:398
tipc_conn_recv_work+0xeb/0x190 net/tipc/topsrv.c:421
process_one_work+0x98d/0x1630 kernel/workqueue.c:2276
worker_thread+0x658/0x11f0 kernel/workqueue.c:2422
As Hoang pointed out, it was caused by skb_cb->bytes_read still accessed
after calling tsk_advance_rx_queue() to free the skb in tipc_recvmsg().
This patch is to fix it by accessing skb_cb->bytes_read earlier than
calling tsk_advance_rx_queue().
Fixes:
f4919ff59c28 ("tipc: keep the skb in rcv queue until the whole data is read")
Reported-by: syzbot+e6741b97d5552f97c24d@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Angelo Dureghello [Fri, 2 Jul 2021 09:48:40 +0000 (11:48 +0200)]
can: flexcan: update Kconfig to enable coldfire
Update flexcan to support coldfire architecture.
Any new platform should use OF, but coldfire architecture is
actually not supporting devicetrees.
Link: https://lore.kernel.org/r/20210702094841.327679-4-angelo@kernel-space.org
Signed-off-by: Angelo Dureghello <angelo@kernel-space.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Angelo Dureghello [Fri, 2 Jul 2021 09:48:41 +0000 (11:48 +0200)]
can: flexcan: add mcf5441x support
Add flexcan support for NXP ColdFire mcf5441x family.
This flexcan module is quite similar to imx6 flexcan module, but
with some exceptions:
- 3 separate interrupt sources, MB, BOFF and ERR,
- implements 16 mb only,
- m68k architecture is not supporting devicetrees, so a
platform data check/case has been added,
- ColdFire is m68k, so big-endian cpu, with a little-endian flexcan
module.
Link: https://lore.kernel.org/r/20210702094841.327679-5-angelo@kernel-space.org
Signed-off-by: Angelo Dureghello <angelo@kernel-space.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Angelo Dureghello [Fri, 2 Jul 2021 09:48:37 +0000 (11:48 +0200)]
can: flexcan: add platform data header
Add platform data header for flexcan.
Link: https://lore.kernel.org/r/20210702094841.327679-1-angelo@kernel-space.org
Signed-off-by: Angelo Dureghello <angelo@kernel-space.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Vincent Mailhol [Mon, 28 Jun 2021 15:54:20 +0000 (00:54 +0900)]
can: etas_es58x: rewrite the message cast in es58{1,_fd}_tx_can_msg to increase readability
The es581_tx_can_msg() does below cast:
| tx_can_msg = (struct es581_4_tx_can_msg *)
| &es581_4_urb_cmd->bulk_tx_can_msg.tx_can_msg_buf[msg_len - 1];
The -1 offset is to skip the first member of struct
es581_4_tx_can_msg. However, es581_4_urb_cmd already has a raw_msg
field which can be used instead without the use of an offset
calculation.
The function es58x_fd_tx_can_msg() is also modified to mirror
es581_tx_can_msg().
Link: https://lore.kernel.org/r/20210628155420.1176217-7-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Vincent Mailhol [Mon, 28 Jun 2021 15:54:19 +0000 (00:54 +0900)]
can: etas_es58x: use sizeof and sizeof_field macros instead of constant values
Replace two constant values by a call to sizeof{,_field} on the
relevant field to make the logic easier to understand.
Link: https://lore.kernel.org/r/20210628155420.1176217-6-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Vincent Mailhol [Mon, 28 Jun 2021 15:54:18 +0000 (00:54 +0900)]
can: etas_es58x: add es58x_free_netdevs() to factorize code
Both es58x_probe() and es58x_disconnect() use a similar code snippet
to release the netdev resources. Factorize it in an helper function
named es58x_free_netdevs().
Link: https://lore.kernel.org/r/20210628155420.1176217-5-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Vincent Mailhol [Mon, 28 Jun 2021 15:54:17 +0000 (00:54 +0900)]
can: etas_es58x: use devm_kzalloc() to allocate device resources
Replace kzalloc() with devm_kzalloc(). By doing this, we do not need
to care anymore about having to call kfree(). This result in a
simpler and more easy to read code.
Link: https://lore.kernel.org/r/20210628155420.1176217-4-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Vincent Mailhol [Mon, 28 Jun 2021 15:54:16 +0000 (00:54 +0900)]
can: etas_es58x: use error pointer during device probing
Make es58x_init_es58x_dev return a pointer to the allocated structure
instead of returning an integer. Errors are handled through the helper
function ERR_PTR and IS_ERR.
This slightly simplifies the code.
Link: https://lore.kernel.org/r/20210628155420.1176217-3-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Vincent Mailhol [Mon, 28 Jun 2021 15:54:15 +0000 (00:54 +0900)]
can: etas_es58x: fix three typos in author name and documentation
Change the author name from "lastname firstname" to "firstname
lastname".
Fix a typo in a variable name in the documentation of struct
es58x_parameters::fifo_mask.
Fix a typo in the title of the datasheet (E701 -> E70) and re-indent
the comments.
Link: https://lore.kernel.org/r/20210628155420.1176217-2-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Stephane Grosjean [Thu, 15 Jul 2021 14:28:41 +0000 (16:28 +0200)]
can: peak_usb: pcan_usb_decode_error(): upgrade handling of bus state changes
This patch updates old code by using the can_change_state() function
published since by the socket-can module.
In particular, this new code better manages the change of bus state by
also using the value of the error counters that the driver now
systematically asks for when initializing the channel.
Link: https://lore.kernel.org/r/20210715142842.35793-1-s.grosjean@peak-system.com
Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Stephane Grosjean [Fri, 25 Jun 2021 13:09:30 +0000 (15:09 +0200)]
can: peak_usb: pcan_usb_encode_msg(): add information
This patch adds information by replacing a hard-coded values with its
symbol and a adding comment.
Link: https://lore.kernel.org/r/20210625130931.27438-5-s.grosjean@peak-system.com
Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Stephane Grosjean [Fri, 25 Jun 2021 13:09:28 +0000 (15:09 +0200)]
can: peak_usb: PCAN-USB: add support of loopback and one-shot mode
The CAN - USB PCAN-USB interface is able to generate one-shot frames
as well as loopback frames that it transmits starting from version 4.1
of its firmware.
This patch adds support for the one-shot and loopback functionality to
the driver, that can be activated if the embedded firmware allows it.
If the driver detects that the PCAN-USB device runs an old firmware
(< 4.1) it prints a message suggesting to contact
<support@peak-system.com> for a possible firmware update.
Link: https://lore.kernel.org/r/20210625130931.27438-3-s.grosjean@peak-system.com
Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Stephane Grosjean [Fri, 25 Jun 2021 13:09:27 +0000 (15:09 +0200)]
can: peak_usb: pcan_usb_get_device_id(): read value only in case of success
In case of error, reading value from response argument is useless.
Link: https://lore.kernel.org/r/20210625130931.27438-2-s.grosjean@peak-system.com
Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Stephane Grosjean [Mon, 7 Jun 2021 15:17:20 +0000 (17:17 +0200)]
can: peak_pci: Add name and FW version of the card in kernel buffer
This patch adds name and (possibly) firmware version information to
the kernel about the detected PEAK-System CAN - PCI/PCIe interface
card.
Link: https://lore.kernel.org/r/20210607151720.13571-1-s.grosjean@peak-system.com
Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
[mkl: reformated struct pci_device_id peak_pci_tbl]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Fri, 11 Jun 2021 13:20:14 +0000 (15:20 +0200)]
can: peak_pci: fix checkpatch warnings
This patch cleans several checkpatch warnings in the peak_pci driver.
Cc: Stephane Grosjean <s.grosjean@peak-system.com>
Link: https://lore.kernel.org/r/20210616102811.2449426-0-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Fri, 11 Jun 2021 13:16:14 +0000 (15:16 +0200)]
can: peak_pci: convert comments to network style comments
This patch converts all comments to network subsystem style comments.
Cc: Stephane Grosjean <s.grosjean@peak-system.com>
Link: https://lore.kernel.org/r/20210616102811.2449426-8-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Peng Li [Sat, 19 Jun 2021 09:56:29 +0000 (17:56 +0800)]
net: at91_can: fix the comments style issue
Networking block comments don't use an empty /* line,
use /* Comment...
Block comments use * on subsequent lines.
Block comments use a trailing */ on a separate line.
This patch fixes the comments style issues.
Link: https://lore.kernel.org/r/1624096589-13452-9-git-send-email-huangguangbin2@huawei.com
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Peng Li [Sat, 19 Jun 2021 09:56:28 +0000 (17:56 +0800)]
net: at91_can: remove redundant space
According to the chackpatch.pl, no space before tabs.
Link: https://lore.kernel.org/r/1624096589-13452-8-git-send-email-huangguangbin2@huawei.com
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Peng Li [Sat, 19 Jun 2021 09:56:27 +0000 (17:56 +0800)]
net: at91_can: add braces {} to all arms of the statement
Braces {} should be used on all arms of this statement.
Link: https://lore.kernel.org/r/1624096589-13452-7-git-send-email-huangguangbin2@huawei.com
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Peng Li [Sat, 19 Jun 2021 09:56:26 +0000 (17:56 +0800)]
net: at91_can: fix the alignment issue
Alignment should match open parenthesis.
Link: https://lore.kernel.org/r/1624096589-13452-6-git-send-email-huangguangbin2@huawei.com
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Peng Li [Sat, 19 Jun 2021 09:56:25 +0000 (17:56 +0800)]
net: at91_can: use BIT macro
This patch uses the BIT macro for setting individual bits,
to fix the following checkpatch.pl issue:
CHECK: Prefer using the BIT macro.
Link: https://lore.kernel.org/r/1624096589-13452-5-git-send-email-huangguangbin2@huawei.com
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Peng Li [Sat, 19 Jun 2021 09:56:24 +0000 (17:56 +0800)]
net: at91_can: fix the code style issue about macro
Macros with complex values should be enclosed in parentheses
Link: https://lore.kernel.org/r/1624096589-13452-4-git-send-email-huangguangbin2@huawei.com
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Peng Li [Sat, 19 Jun 2021 09:56:23 +0000 (17:56 +0800)]
net: at91_can: add blank line after declarations
This patch fixes the checkpatch error about missing a blank line
after declarations.
Link: https://lore.kernel.org/r/1624096589-13452-3-git-send-email-huangguangbin2@huawei.com
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Peng Li [Sat, 19 Jun 2021 09:56:22 +0000 (17:56 +0800)]
net: at91_can: remove redundant blank lines
This patch removes some redundant blank lines.
Link: https://lore.kernel.org/r/1624096589-13452-2-git-send-email-huangguangbin2@huawei.com
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Zhen Lei [Thu, 3 Jun 2021 10:02:33 +0000 (18:02 +0800)]
can: at91_can: use DEVICE_ATTR_RW() helper macro
Use DEVICE_ATTR_RW() helper macro instead of plain DEVICE_ATTR(), which
makes the code a bit shorter and easier to read.
Link: https://lore.kernel.org/r/20210603100233.11877-1-thunder.leizhen@huawei.com
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Zhen Lei [Thu, 3 Jun 2021 11:17:39 +0000 (19:17 +0800)]
can: janz-ican3: use DEVICE_ATTR_RO/RW() helper macro
Use DEVICE_ATTR_RO/RW() helper macro instead of plain DEVICE_ATTR(), which
makes the code a bit shorter and easier to read.
Link: https://lore.kernel.org/r/20210603111739.11983-1-thunder.leizhen@huawei.com
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Zhen Lei [Thu, 3 Jun 2021 11:09:02 +0000 (19:09 +0800)]
can: esd_usb2: use DEVICE_ATTR_RO() helper macro
Use DEVICE_ATTR_RO() helper macro instead of plain DEVICE_ATTR(), which
makes the code a bit shorter and easier to read.
Link: https://lore.kernel.org/r/20210603110902.11930-1-thunder.leizhen@huawei.com
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Thu, 22 Jul 2021 07:53:23 +0000 (09:53 +0200)]
can: mcp251xfd: mcp251xfd_open(): request IRQ as shared
The driver's IRQ handler supports shared IRQs, so request a shared IRQ
handler.
Link: https://lore.kernel.org/r/20210724205212.737328-1-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Andy Shevchenko [Wed, 26 May 2021 19:33:27 +0000 (22:33 +0300)]
can: mcp251xfd: Fix header block to clarify independence from OF
The driver is neither dependent on OF, nor it requires any OF headers.
Fix header block to clarify independence from OF.
Link: https://lore.kernel.org/r/http://lore.kernel.org/r/20210531084444.1785397-2-mkl@pengutronix.de
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Andy Shevchenko [Wed, 26 May 2021 19:33:26 +0000 (22:33 +0300)]
can: mcp251xfd: mcp251xfd_probe(): try to get crystal clock rate from property
In some configurations, mainly ACPI-based, the clock frequency of the
device is supplied by very well established 'clock-frequency'
property. Hence, try to get it from the property at last if no other
providers are available.
Link: https://lore.kernel.org/r/20210531084444.1785397-1-mkl@pengutronix.de
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 10:17:26 +0000 (11:17 +0100)]
can: m_can: remove support for custom bit timing
Since commit
aee2b3ccc8a6 ("can: tcan4x5x: fix bittiming const, use
common bittiming from m_can driver") there is no use of the device
specific bit timing parameters (m_can_classdev::bit_timing and struct
m_can_classdev::data_timing).
This patch removes the support for custom bit timing from the driver,
as the common bit timing works for all known IP core implementations.
Cc: Chandrasekar Ramakrishnan <rcsekar@samsung.com>
Link: https://lore.kernel.org/r/20210616102811.2449426-7-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Yang Yingliang [Thu, 3 Jun 2021 07:34:41 +0000 (15:34 +0800)]
can: m_can: use devm_platform_ioremap_resource_byname
Use the devm_platform_ioremap_resource_byname() helper instead of
calling platform_get_resource_byname() and devm_ioremap_resource()
separately.
Link: https://lore.kernel.org/r/20210603073441.2983497-1-yangyingliang@huawei.com
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Faiz Abbas [Mon, 10 May 2021 05:25:41 +0000 (10:55 +0530)]
can: m_can: Add support for transceiver as phy
Add support for implementing transceiver node as phy. The max_bitrate
is obtained by getting a phy attribute.
Link: https://lore.kernel.org/r/20210724174001.553047-1-mkl@pengutronix.de
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Faiz Abbas [Mon, 10 May 2021 05:25:40 +0000 (10:55 +0530)]
dt-bindings: net: can: Document transceiver implementation as phy
Some transceivers need a configuration step (for example, pulling the
standby or enable lines) for them to start sending messages. The
transceiver can be implemented as a phy with the configuration done in
the phy driver. The bit rate limitation can the be obtained by the
driver using the phy node.
Document the above implementation in the bosch mcan bindings.
Link: https://lore.kernel.org/r/20210510052541.14168-2-a-govindraju@ti.com
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Vincent Mailhol [Thu, 3 Jun 2021 15:15:49 +0000 (00:15 +0900)]
can: netlink: remove redundant check in can_validate()
can_validate() does a first check:
| if (is_can_fd) {
| if (!data[IFLA_CAN_BITTIMING] || !data[IFLA_CAN_DATA_BITTIMING])
| return -EOPNOTSUPP;
| }
If that first if succeeds, we know that if is_can_fd is true then
data[IFLA_CAN_BITTIMING is set.
However, the next if switch does not leverage on above knowledge and
redoes the check:
| if (data[IFLA_CAN_DATA_BITTIMING]) {
| if (!is_can_fd || !data[IFLA_CAN_BITTIMING])
| ^~~~~~~~~~~~~~~~~~~~~~~~
| return -EOPNOTSUPP;
| }
This patch removes that redundant check.
Link: https://lore.kernel.org/r/20210603151550.140727-2-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Vincent Mailhol [Fri, 18 Jun 2021 08:19:03 +0000 (17:19 +0900)]
can: netlink: clear data_bittiming if FD is turned off
When the FD is turned off through the netlink interface, the data bit
timing values still remain in data_bittiming and are displayed despite
of the feature being disabled.
Example:
| $ ip link set can0 type can bitrate 500000 dbitrate 2000000 fd on
| $ ip --details link show can0
| 1: can0: <NOARP,ECHO> mtu 72 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 10
| link/can promiscuity 0 minmtu 0 maxmtu 0
| can <FD> state STOPPED restart-ms 0
| bitrate 500000 sample-point 0.875
| tq 12 prop-seg 69 phase-seg1 70 phase-seg2 20 sjw 1
| ES582.1/ES584.1: tseg1 2..256 tseg2 2..128 sjw 1..128 brp 1..512 brp-inc 1
| dbitrate 2000000 dsample-point 0.750
| dtq 12 dprop-seg 14 dphase-seg1 15 dphase-seg2 10 dsjw 1
| ES582.1/ES584.1: dtseg1 2..32 dtseg2 1..16 dsjw 1..8 dbrp 1..32 dbrp-inc 1
| clock
80000000 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
|
| $ ip link set can0 type can bitrate 500000 fd off
| $ ip --details link show can0
| 1: can0: <NOARP,ECHO> mtu 16 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 10
| link/can promiscuity 0 minmtu 0 maxmtu 0
| can state STOPPED restart-ms 0
| bitrate 500000 sample-point 0.875
| tq 12 prop-seg 69 phase-seg1 70 phase-seg2 20 sjw 1
| ES582.1/ES584.1: tseg1 2..256 tseg2 2..128 sjw 1..128 brp 1..512 brp-inc 1
| dbitrate 2000000 dsample-point 0.750
| dtq 12 dprop-seg 14 dphase-seg1 15 dphase-seg2 10 dsjw 1
| ES582.1/ES584.1: dtseg1 2..32 dtseg2 1..16 dsjw 1..8 dbrp 1..32 dbrp-inc 1
| clock
80000000 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
Remark: once FD is turned off, it is not possible to turn fd back on
and reuse the previously input data bit timing values:
| $ ip link set can0 type can bitrate 500000 fd on
| RTNETLINK answers: Operation not supported
This means that the user will need to re-configure the data bit timing
in order to turn fd on again.
Because old data bit timing values cannot be reused, this patch clears
priv->data_bit timing whenever FD is turned off. This way, the data
bit timing variables are not displayed anymore.
Link: https://lore.kernel.org/r/20210618081904.141114-2-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Wed, 16 Jun 2021 09:55:26 +0000 (11:55 +0200)]
can: bittiming: fix documentation for struct can_tdc
This patch fixes a typo in the documentation for struct can_tdc::tdcv.
The number "0" refers to automatic mode not the letter "O".
Further two grammar errors in the documentation for struct can_tdc are
fixed.
First grammar error: add a missing third person 's'.
Second grammar error: replace "such as" by "such that". The intent is
to give a condition, not an example.
Fixes:
289ea9e4ae59 ("can: add new CAN FD bittiming parameters: Transmitter Delay Compensation (TDC)")
Link: https://lore.kernel.org/r/20210616095922.2430415-1-mkl@pengutronix.de
Link: https://lore.kernel.org/r/20210616124057.60723-1-mailhol.vincent@wanadoo.fr
Co-developed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Acked-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Mon, 10 May 2021 20:51:39 +0000 (22:51 +0200)]
can: rx-offload: can_rx_offload_threaded_irq_finish(): add new function to be called from threaded interrupt
After reading all CAN frames from the controller in the IRQ handler
and storing them into a skb_queue, the driver calls napi_schedule().
In the napi poll function the skb from the skb_queue are then pushed
into the networking stack.
However if napi_schedule() is called from a threaded IRQ handler this
triggers the following error:
| NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #08!!!
To avoid this, create a new rx-offload
function (can_rx_offload_threaded_irq_finish()) with a call to
local_bh_disable()/local_bh_enable() around the napi_schedule() call.
Convert all drivers that call can_rx_offload_irq_finish() from
threaded IRQ context to can_rx_offload_threaded_irq_finish().
Link: https://lore.kernel.org/r/20210724204745.736053-4-mkl@pengutronix.de
Suggested-by: Daniel Glöckner <dg@emlix.com>
Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Fri, 7 May 2021 15:58:30 +0000 (17:58 +0200)]
can: rx-offload: can_rx_offload_irq_finish(): directly call napi_schedule()
Instead of calling can_rx_offload_schedule() call napi_schedule()
directly. As this was the last use of can_rx_offload_schedule() remove
this helper function.
Link: https://lore.kernel.org/r/20210724204745.736053-3-mkl@pengutronix.de
Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Wed, 9 Oct 2019 04:41:08 +0000 (06:41 +0200)]
can: rx-offload: add skb queue for use during ISR
Adding a skb to the skb_queue in rx-offload requires to take a lock.
This commit avoids this by adding an unlocked skb queue that is
appended at the end of the ISR. Having one lock at the end of the ISR
should be OK as the HW is empty, not about to overflow.
Link: https://lore.kernel.org/r/20210724204745.736053-2-mkl@pengutronix.de
Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Co-developed-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Fri, 21 May 2021 08:04:29 +0000 (10:04 +0200)]
can: j1939: j1939_xtp_rx_dat_one(): use separate pointer for session skb control buffer
In the j1939_xtp_rx_dat_one() function, there are 2 variables (skb and
se_skb) holding a skb. The control buffer of the skbs is accessed one
after the other, but using the same "skcb" variable.
To avoid confusion introduce a new variable "se_skcb" to access the
se_skb's control buffer as done in the rest of this file, too.
Cc: Robin van der Gracht <robin@protonic.nl>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20210616102811.2449426-6-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Fri, 21 May 2021 08:04:29 +0000 (10:04 +0200)]
can: j1939: j1939_session_tx_dat(): use consistent name se_skcb for session skb control buffer
This patch changes the name of the "skcb" variable in
j1939_session_tx_dat() to "se_skcb" as it's the session skb's control
buffer. The same name is used in other functions for the session skb's
control buffer.
Cc: Robin van der Gracht <robin@protonic.nl>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20210616102811.2449426-5-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Fri, 21 May 2021 08:04:29 +0000 (10:04 +0200)]
can: j1939: j1939_session_completed(): use consistent name se_skb for the session skb
This patch changes the name of the "skb" variable in
j1939_session_completed() to "se_skb" as it's the session skb. The
same name is used in other functions for the session skb.
Cc: Robin van der Gracht <robin@protonic.nl>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20210616102811.2449426-4-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Wed, 16 Jun 2021 06:53:16 +0000 (08:53 +0200)]
can: j1939: replace fall through comment by fallthrough pseudo-keyword
Replace the existing /* fall through */ comments the new
pseudo-keyword macro fallthrough.
Cc: Robin van der Gracht <robin@protonic.nl>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20210616102811.2449426-3-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Wed, 16 Jun 2021 06:58:01 +0000 (08:58 +0200)]
can: j1939: fix checkpatch warnings
This patch fixes a checkpatch warning about a long line and wrong
indention.
Cc: Robin van der Gracht <robin@protonic.nl>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20210616102811.2449426-2-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
gushengxian [Fri, 11 Jun 2021 04:39:33 +0000 (12:39 +0800)]
can: j1939: j1939_sk_sock_destruct(): correct a grammatical error
Correct a grammatical error.
Link: https://lore.kernel.org/r/20210611043933.17047-1-13145886936@163.com
Signed-off-by: gushengxian <gushengxian@yulong.com>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
David S. Miller [Sun, 25 Jul 2021 08:21:32 +0000 (09:21 +0100)]
Merge branch 'nfc-const'
Krzysztof Kozlowski says:
====================
nfc: constify data structures
Constify pointers to several data structures which are not modified by
NFC core or by drivers to make it slightly safer. No functional impact
expected.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:49:28 +0000 (23:49 +0200)]
nfc: constify nfc_digital_ops
Neither the core nor the drivers modify the passed pointer to struct
nfc_digital_ops, so make it a pointer to const for correctness and safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:49:27 +0000 (23:49 +0200)]
nfc: constify nfc_llc_ops
Neither the core nor the drivers modify the passed pointer to struct
nfc_llc_ops, so make it a pointer to const for correctness and safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:49:26 +0000 (23:49 +0200)]
nfc: constify nfc_hci_ops
Neither the core nor the drivers modify the passed pointer to struct
nfc_hci_ops, so make it a pointer to const for correctness and safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:49:25 +0000 (23:49 +0200)]
nfc: constify nfc_ops
Neither the core nor the drivers modify the passed pointer to struct
nfc_ops, so make it a pointer to const for correctness and safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:49:24 +0000 (23:49 +0200)]
nfc: constify nfc_hci_gate
Neither the core nor the drivers modify the passed pointer to struct
nfc_hci_gate, so make it a pointer to const for correctness and safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:49:23 +0000 (23:49 +0200)]
nfc: constify pointer to nfc_vendor_cmd
Neither the core nor the drivers modify the passed pointer to struct
nfc_vendor_cmd, so make it a pointer to const for correctness and
safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:49:22 +0000 (23:49 +0200)]
nfc: st21nfca: constify file-scope arrays
Driver only reads len_seq and wait_tab variables.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:47:36 +0000 (23:47 +0200)]
nfc: constify nfc_phy_ops
Neither the core nor the drivers modify the passed pointer to struct
nfc_phy_ops (consisting of function pointers), so make it a pointer
to const for correctness and safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:47:35 +0000 (23:47 +0200)]
nfc: constify nci_driver_ops (prop_ops and core_ops)
Neither the core nor the drivers modify the passed pointer to struct
nci_driver_ops (consisting of function pointers), so make it a pointer
to const for correctness and safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:47:34 +0000 (23:47 +0200)]
nfc: s3fwrn5: constify nci_ops
s3fwrn5 driver modifies static struct nci_ops only to set prop_ops.
Since prop_ops is build time constant with known size, it can be made
const. This allows to removeo the function setting the prop_ops -
s3fwrn5_nci_get_prop_ops().
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:47:33 +0000 (23:47 +0200)]
nfc: constify nci_ops
The struct nci_ops is modified by NFC core in only one case:
nci_allocate_device() receives too many proprietary commands (prop_ops)
to configure. This is a build time known constrain, so a graceful
handling of such case is not necessary.
Instead, fail the nci_allocate_device() and add BUILD_BUG_ON() to places
which set these.
This allows to constify the struct nci_ops (consisting of function
pointers) for correctness and safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Sat, 24 Jul 2021 21:47:32 +0000 (23:47 +0200)]
nfc: constify payload argument in nci_send_cmd()
The nci_send_cmd() payload argument is passed directly to skb_put_data()
which already accepts a pointer to const, so make it const as well for
correctness and safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Fri, 23 Jul 2021 20:49:11 +0000 (23:49 +0300)]
net: bridge: fix build when setting skb->offload_fwd_mark with CONFIG_NET_SWITCHDEV=n
Switchdev support can be disabled at compile time, and in that case,
struct sk_buff will not contain the offload_fwd_mark field.
To make the code in br_forward.c work in both cases, we do what is done
in other places and we create a helper function, with an empty shim
definition, that is implemented by the br_switchdev.o translation module.
This is always compiled if and only if CONFIG_NET_SWITCHDEV is y or m.
Reported-by: kernel test robot <lkp@intel.com>
Fixes:
472111920f1c ("net: bridge: switchdev: allow the TX data plane forwarding to be offloaded")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 23 Jul 2021 20:18:57 +0000 (21:18 +0100)]
Merge branch '1GbE' of git://git./linux/kernel/git/tnguy/next-queue
Tony Nguyen says:
====================
1GbE Intel Wired LAN Driver Updates 2021-07-23
This series contains updates to igb and e100 drivers.
Grzegorz adds a timeout check to prevent possible infinite loop for igb.
Kees Cook adjusts memcpy() argument to represent the entire structure
to allow for appropriate bounds checking for igb and e100.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
chongjiapeng [Fri, 23 Jul 2021 10:38:27 +0000 (18:38 +0800)]
net: phy: Remove unused including <linux/version.h>
Eliminate the follow versioncheck warning:
./drivers/net/phy/mxl-gpy.c: 9 linux/version.h not needed.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: chongjiapeng <jiapeng.chong@linux.alibaba.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Fri, 23 Jul 2021 09:20:34 +0000 (11:20 +0200)]
nfc: port100: constify protocol list array
File-scope "port100_protocol" array is read-only and passed as pointer
to const, so it can be made a const to increase code safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>