platform/kernel/linux-starfive.git
23 months agoice: Match parameter name for ice_cfg_phy_fc()
Tony Nguyen [Thu, 15 Dec 2022 21:36:37 +0000 (13:36 -0800)]
ice: Match parameter name for ice_cfg_phy_fc()

The parameter name in the function declaration and definition do not
match; adjust the naming for consistency and to avoid confusion.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
23 months agoice: Explicitly return 0
Tony Nguyen [Thu, 15 Dec 2022 21:36:25 +0000 (13:36 -0800)]
ice: Explicitly return 0

Previous checks, and goto, will catch all errors meaning these returns
will only return 0; explicitly return 0 for these cases.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
23 months agoice: Reduce scope of variables
Tony Nguyen [Wed, 23 Nov 2022 16:56:40 +0000 (08:56 -0800)]
ice: Reduce scope of variables

There are some places where the scope of a variable can
be reduced, so do that.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
23 months agoice: Move support DDP code out of ice_flex_pipe.c
Sergey Temerkhanov [Tue, 20 Dec 2022 15:01:14 +0000 (16:01 +0100)]
ice: Move support DDP code out of ice_flex_pipe.c

Currently, ice_flex_pipe.c includes the DDP loading functions
and has grown large. Although flexible processing support
code is related to DDP loading, these parts are distinct.
Move the DDP loading functionality from ice_flex_pipe.c to
a separate file.

Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
23 months agoice: Remove cppcheck suppressions
Tony Nguyen [Wed, 23 Nov 2022 16:56:27 +0000 (08:56 -0800)]
ice: Remove cppcheck suppressions

The use of suppressions for cppcheck in the kernel does not look to be
standard as the ice driver is the only one doing it. Remove the
comments/suppressions.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
23 months agoice: combine cases in ice_ksettings_find_adv_link_speed()
Przemek Kitszel [Wed, 23 Nov 2022 15:55:44 +0000 (16:55 +0100)]
ice: combine cases in ice_ksettings_find_adv_link_speed()

Combine if statements setting the same link speed together.

Suggested-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Acked-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Sunitha Mekala <sunithax.d.mekala@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
23 months agoice: Add support for 100G KR2/CR2/SR2 link reporting
Anirudh Venkataramanan [Wed, 23 Nov 2022 15:55:43 +0000 (16:55 +0100)]
ice: Add support for 100G KR2/CR2/SR2 link reporting

Commit 2736d94f351b ("ethtool: Added support for 50Gbps per lane link modes")
in v5.1 added (among other things) support for 100G CR2/KR2/SR2 link modes.
Advertise these link modes if the firmware reports the corresponding PHY types.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Tested-by: Sunitha Mekala <sunithax.d.mekala@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
23 months agoice: add missing checks for PF vsi type
Jesse Brandeburg [Wed, 14 Dec 2022 00:01:31 +0000 (16:01 -0800)]
ice: add missing checks for PF vsi type

There were a few places we had missed checking the VSI type to make sure
it was definitely a PF VSI, before calling setup functions intended only
for the PF VSI.

This doesn't fix any explicit bugs but cleans up the code in a few
places and removes one explicit != vsi->type check that can be
superseded by this code (it's a super set)

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
23 months agoice: remove redundant non-null check in ice_setup_pf_sw()
Anirudh Venkataramanan [Wed, 16 Nov 2022 12:20:32 +0000 (13:20 +0100)]
ice: remove redundant non-null check in ice_setup_pf_sw()

Remove a redundant null check, as vsi could not be null at this point.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
23 months agoice: restrict PTP HW clock freq adjustments to 100, 000, 000 PPB
Siddaraju DH [Tue, 15 Nov 2022 09:41:35 +0000 (15:11 +0530)]
ice: restrict PTP HW clock freq adjustments to 100, 000, 000 PPB

The PHY provides only 39b timestamp. With current timing
implementation, we discard lower 7b, leaving 32b timestamp.
The driver reconstructs the full 64b timestamp by correlating the
32b timestamp with cached_time for performance. The reconstruction
algorithm does both forward & backward interpolation.

The 32b timeval has overflow duration of 2^32 counts ~= 4.23 second.
Due to interpolation in both direction, its now ~= 2.125 second
IIRC, going with at least half a duration, the cached_time is updated
with periodic thread of 1 second (worst-case) periodicity.

But the 1 second periodicity is based on System-timer.
With PPB adjustments, if the 1588 timers increments at say
double the rate, (2s in-place of 1s), the Nyquist rate/half duration
sampling/update of cached_time with 1 second periodic thread will
lead to incorrect interpolations.

Hence we should restrict the PPB adjustments to at least half duration
of cached_time update which translates to 500,000,000 PPB.

Since the periodicity of the cached-time system thread can vary,
it is good to have some buffer time and considering practicality of
PPB adjustments, limiting the max_adj to 100,000,000.

Signed-off-by: Siddaraju DH <siddaraju.dh@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
23 months agoice: Support drop action
Amritha Nambiar [Tue, 8 Nov 2022 22:08:12 +0000 (14:08 -0800)]
ice: Support drop action

Currently the drop action is supported only in switchdev mode.
Add support for offloading receive filters with action drop
in ADQ/non-ADQ modes. This is in addition to other actions
such as forwarding to a VSI (ADQ) or a queue (ADQ/non-ADQ).

Also renamed 'ch_vsi' to 'dest_vsi' as it is valid for multiple
actions such as forward to vsi/queue which may/may not create a
channel vsi.

Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Signed-off-by: Amritha Nambiar <amritha.nambiar@intel.com>
Tested-by: Bharathi Sreenivas <bharathi.sreenivas@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
23 months agoice: Handle LLDP MIB Pending change
Anatolii Gerasymenko [Wed, 24 Aug 2022 12:07:28 +0000 (14:07 +0200)]
ice: Handle LLDP MIB Pending change

If the number of Traffic Classes (TC) is decreased, the FW will no
longer remove TC nodes, but will send a pending change notification. This
will allow RDMA to destroy corresponding Control QP markers. After RDMA
finishes outstanding operations, the ice driver will send an execute MIB
Pending change admin queue command to FW to finish DCB configuration
change.

The FW will buffer all incoming Pending changes, so there can be only
one active Pending change.

RDMA driver guarantees to remove Control QP markers within 5000 ms.
Hence, LLDP response timeout txTTL (default 30 sec) will be met.

In the case of a Pending change, LLDP MIB Change Event (opcode 0x0A01) will
contain the whole new MIB. But Get LLDP MIB (opcode 0x0A00) AQ call would
still return an old MIB, as the Pending change hasn't been applied yet.
Add ice_get_dcb_cfg_from_mib_change() function to retrieve DCBX config
from LLDP MIB Change Event's buffer for Pending changes.

Co-developed-by: Dave Ertman <david.m.ertman@intel.com>
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Signed-off-by: Anatolii Gerasymenko <anatolii.gerasymenko@intel.com>
Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
23 months agoice: Add 'Execute Pending LLDP MIB' Admin Queue command
Tsotne Chakhvadze [Wed, 24 Aug 2022 12:07:27 +0000 (14:07 +0200)]
ice: Add 'Execute Pending LLDP MIB' Admin Queue command

In DCB Willing Mode (FW managed LLDP), when the link partner changes
configuration which requires fewer TCs, the TCs that are no longer
needed are suspended by EMP FW, removed, and never resumed. This occurs
before a MIB change event is indicated to SW. The permanent suspension and
removal of these TC nodes in the scheduler prevents RDMA from being able
to destroy QPs associated with this TC, requiring a CORE reset to recover.

A new DCBX configuration change flow is defined to allow SW driver and
other SW components (RDMA) to properly adjust to the configuration
changes before they are taking effect in HW. This flow includes a
two-way handshake between EMP FW<->LAN SW<->RDMA SW.

List of changes:
- Add 'Execute Pending LLDP MIB' AQC.
- Add 'Pending Event Enable' bit.
- Add additional logic to ignore Pending Event Enable' request
  while 'LLDP MIB Chnage' event is disabled.
- Add 'Execute Pending LLDP MIB' AQC sending function to FW,
  which is needed to take place MIB Event change.

Signed-off-by: Tsotne Chakhvadze <tsotne.chakhvadze@intel.com>
Co-developed-by: Karen Sornek <karen.sornek@intel.com>
Signed-off-by: Karen Sornek <karen.sornek@intel.com>
Co-developed-by: Dave Ertman <david.m.ertman@intel.com>
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Co-developed-by: Anatolii Gerasymenko <anatolii.gerasymenko@intel.com>
Signed-off-by: Anatolii Gerasymenko <anatolii.gerasymenko@intel.com>
Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
23 months agoMerge branch 'net-phy-remove-probe_capabilities'
Paolo Abeni [Thu, 19 Jan 2023 15:23:26 +0000 (16:23 +0100)]
Merge branch 'net-phy-remove-probe_capabilities'

Michael Walle says:

====================
net: phy: Remove probe_capabilities

With all the drivers which used .probe_capabilities converted to the
new c45 MDIO access methods, we can now decide based upon these whether
a bus driver supports c45 and we can get rid of the not widely used
probe_capabilites.

Unfortunately, due to a now broader support of c45 scans, this will
trigger a bug on some boards with a (c22-only) Micrel PHY. These PHYs
don't ignore c45 accesses correctly, thinking they are addressed
themselves and distrupt the MDIO access. To avoid this, a blacklist
for c45 scans is introduced.
====================

Link: https://lore.kernel.org/r/20230116-net-next-remove-probe-capabilities-v2-0-15513b05e1f4@walle.cc
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agonet: phy: Remove probe_capabilities
Andrew Lunn [Wed, 18 Jan 2023 10:01:40 +0000 (11:01 +0100)]
net: phy: Remove probe_capabilities

Deciding if to probe of PHYs using C45 is now determine by if the bus
provides the C45 read method. This makes probe_capabilities redundant
so remove it.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agonet: phy: Decide on C45 capabilities based on presence of method
Andrew Lunn [Wed, 18 Jan 2023 10:01:39 +0000 (11:01 +0100)]
net: phy: Decide on C45 capabilities based on presence of method

Some PHYs provide invalid IDs in C22 space. If C45 is supported on the
bus an attempt can be made to get the IDs from the C45 space. Decide
on this based on the presence of the C45 read method in the bus
structure. This will allow the unreliable probe_capabilities to be
removed.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agonet: mdio: scan bus based on bus capabilities for C22 and C45
Andrew Lunn [Wed, 18 Jan 2023 10:01:38 +0000 (11:01 +0100)]
net: mdio: scan bus based on bus capabilities for C22 and C45

Now that all MDIO bus drivers which set probe_capabilities to
MDIOBUS_C22_C45 have been converted to use the name API for C45
transactions, perform the scanning of the bus based on which methods
the bus provides.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agonet: mdio: Add workaround for Micrel PHYs which are not C45 compatible
Andrew Lunn [Wed, 18 Jan 2023 10:01:37 +0000 (11:01 +0100)]
net: mdio: Add workaround for Micrel PHYs which are not C45 compatible

After scanning the bus for C22 devices, check if any Micrel PHYs have
been found.  They are known to do bad things if there are C45
transactions on the bus. Prevent the scanning of the bus using C45 if
such a PHY has been detected.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agonet: mdio: Rework scanning of bus ready for quirks
Andrew Lunn [Wed, 18 Jan 2023 10:01:36 +0000 (11:01 +0100)]
net: mdio: Rework scanning of bus ready for quirks

Some C22 PHYs do bad things when there are C45 transactions on the
bus. In order to handle this, the bus needs to be scanned first for
C22 at all addresses, and then C45 scanned for all addresses.

The Marvell pxa168 driver scans a specific address on the bus to find
its PHY. This is a C22 only device, so update it to use the c22
helper.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agonet: mdio: Move mdiobus_scan() within file
Andrew Lunn [Wed, 18 Jan 2023 10:01:35 +0000 (11:01 +0100)]
net: mdio: Move mdiobus_scan() within file

No functional change, just place it earlier in preparation for some
refactoring.

While at it, correct the comment format and one typo.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agoMerge branch 'generic-implementation-of-phy-interface-and-fixed_phy-support-for-the...
Paolo Abeni [Thu, 19 Jan 2023 12:50:13 +0000 (13:50 +0100)]
Merge branch 'generic-implementation-of-phy-interface-and-fixed_phy-support-for-the-lan743x-device'

Pavithra Sathyanarayanan says:

====================
generic implementation of phy interface and fixed_phy support for the LAN743x device

This patch series includes the following changes:

- Remove the unwanted interface settings in the LAN743x driver as
  it is preset in EEPROM configurations.

- Handle generic implementation for the phy interfaces for different
  devices LAN7430/31 and pci11x1x.

- Add new feature for fixed_phy support at 1Gbps full duplex for the
  LAN7431 device if a phy not found over MDIO. Includes support for
  communication between a MAC in a LAN7431 device and custom phys
  without an MDIO interface.
====================

Link: https://lore.kernel.org/r/20230117141614.4411-1-Pavithra.Sathyanarayanan@microchip.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agonet: lan743x: add fixed phy support for LAN7431 device
Pavithra Sathyanarayanan [Tue, 17 Jan 2023 14:16:14 +0000 (19:46 +0530)]
net: lan743x: add fixed phy support for LAN7431 device

Add fixed_phy support at 1Gbps full duplex for the lan7431 device
if a phy not found over MDIO. Tested with a MAC to MAC connection
from LAN7431 to a KSZ9893 switch. This avoids the Driver open error
in LAN743x. TX delay and internal CLK125 generation is already
enabled in EEPROM.

Signed-off-by: Pavithra Sathyanarayanan <Pavithra.Sathyanarayanan@microchip.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agonet: lan743x: add generic implementation for phy interface selection
Pavithra Sathyanarayanan [Tue, 17 Jan 2023 14:16:13 +0000 (19:46 +0530)]
net: lan743x: add generic implementation for phy interface selection

Add logic to read the Phy interface from MAC_CR register for LAN743x
driver.

Checks for the LAN7430/31 or pci11x1x devices and the adapter
interface is updated accordingly. For LAN7431, adapter interface is set
based on Bit 19 of MAC_CR register as MII or RGMII which removes the
forced RGMII/GMII configurations in lan743x_phy_open().

Signed-off-by: Pavithra Sathyanarayanan <Pavithra.Sathyanarayanan@microchip.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agonet: lan743x: remove unwanted interface select settings
Pavithra Sathyanarayanan [Tue, 17 Jan 2023 14:16:12 +0000 (19:46 +0530)]
net: lan743x: remove unwanted interface select settings

Remove the MII/RGMII Selection settings in driver as it is preset
by the EEPROM and has the required configurations before the driver
loads for LAN743x.

Signed-off-by: Pavithra Sathyanarayanan <Pavithra.Sathyanarayanan@microchip.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agoselftests/net: mv bpf/nat6to4.c to net folder
Hangbin Liu [Wed, 18 Jan 2023 02:09:27 +0000 (10:09 +0800)]
selftests/net: mv bpf/nat6to4.c to net folder

There are some issues with the bpf/nat6to4.c building.

1. It use TEST_CUSTOM_PROGS, which will add the nat6to4.o to
   kselftest-list file and run by common run_tests.
2. When building the test via `make -C tools/testing/selftests/
   TARGETS="net"`, the nat6to4.o will be build in selftests/net/bpf/
   folder. But in test udpgro_frglist.sh it refers to ../bpf/nat6to4.o.
   The correct path should be ./bpf/nat6to4.o.
3. If building the test via `make -C tools/testing/selftests/ TARGETS="net"
   install`. The nat6to4.o will be installed to kselftest_install/net/
   folder. Then the udpgro_frglist.sh should refer to ./nat6to4.o.

To fix the confusing test path, let's just move the nat6to4.c to net folder
and build it as TEST_GEN_FILES.

Fixes: edae34a3ed92 ("selftests net: add UDP GRO fraglist + bpf self-tests")
Tested-by: Björn Töpel <bjorn@kernel.org>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://lore.kernel.org/r/20230118020927.3971864-1-liuhangbin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agoMerge branch 'enetc-bd-ring-cleanup'
Jakub Kicinski [Thu, 19 Jan 2023 04:52:28 +0000 (20:52 -0800)]
Merge branch 'enetc-bd-ring-cleanup'

Vladimir Oltean says:

====================
ENETC BD ring cleanup

The highlights of this patch set are:

- Installing a BPF program and changing PTP RX timestamping settings are
  currently implemented through a port reconfiguration procedure which
  triggers an AN restart on the PHY, and these procedures are not
  generally guaranteed to leave the port in a sane state. Patches 9/12
  and 11/12 address that.

- Attempting to put the port down (or trying to reconfigure it) has the
  driver oppose some resistance if it's bombarded with RX traffic
  (it won't go down). Patch 12/12 addresses that.

The other 9 patches are just cleanup in the BD ring setup/teardown code,
which gradually led to bringing the driver in a position where resolving
those 2 issues was possible.
====================

Link: https://lore.kernel.org/r/20230117230234.2950873-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: prioritize ability to go down over packet processing
Vladimir Oltean [Tue, 17 Jan 2023 23:02:34 +0000 (01:02 +0200)]
net: enetc: prioritize ability to go down over packet processing

napi_synchronize() from enetc_stop() waits until the softirq has
finished execution and no longer wants to be rescheduled. However under
high traffic load, this will never happen, and the interface can never
be closed.

The problem is the fact that the NAPI poll routine is written to update
the consumer index which makes the device want to put more buffers in
the RX ring, which restarts the madness again.

Browsing around, it seems that some drivers like i40e keep a bit
(__I40E_VSI_DOWN) which they use as communication between the control
path and the data path. But that isn't my first choice, because
complications ensue - since the enetc hardirq may trigger while we are
in a theoretical ENETC_DOWN state, it may happen that enetc_msix() masks
it, but enetc_poll() never unmasks it. To prevent a stall in that case,
one would need to schedule all NAPI instances when ENETC_DOWN gets
cleared, to process what's pending.

I find it more desirable for the control path - enetc_stop() - to just
quiesce the RX ring and let the softirq finish what remains there,
without any explicit communication, just by making hardware not provide
any more packets.

This seems possible with the Enable bit of the RX BD ring (RBaMR[EN]).
I can't seem to find an exact definition of what this bit does, but when
the RX ring is disabled, the port seems to no longer update the producer
index, and not react to software updates of the consumer index.

In fact, the RBaMR[EN] bit is already toggled by the driver, but too
late for what we want:

enetc_close()
-> enetc_stop()
   -> napi_synchronize()
-> enetc_clear_bdrs()
   -> enetc_clear_rxbdr()

The enetc_clear_bdrs() function contains not only logic to disable the
RX and TX rings, but also logic to wait for the TX ring stop being busy.

We split enetc_clear_bdrs() into enetc_disable_bdrs() and
enetc_wait_bdrs(). One needs to run before napi_synchronize() and the
other after (NAPI also processes TX completions, so we maximize our
chances of not waiting for the ENETC_TBSR_BUSY bit - unless a packet is
stuck for some reason, ofc).

We also split off enetc_enable_bdrs() from enetc_setup_bdrs(), and call
this from the mirror position in enetc_start() compared to enetc_stop(),
i.e. right before netif_tx_start_all_queues().

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: set up XDP program under enetc_reconfigure()
Vladimir Oltean [Tue, 17 Jan 2023 23:02:33 +0000 (01:02 +0200)]
net: enetc: set up XDP program under enetc_reconfigure()

Offloading a BPF program to the RX path of the driver suffers from the
same problems as the PTP reconfiguration - improper error checking can
leave the driver in an invalid state, and the link on the PHY is lost.

Reuse the enetc_reconfigure() procedure, but here, we need to run some
code in the middle of the ring reconfiguration procedure - while the
interface is still down. Introduce a callback which makes that possible.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: rename "xdp" and "dev" in enetc_setup_bpf()
Vladimir Oltean [Tue, 17 Jan 2023 23:02:32 +0000 (01:02 +0200)]
net: enetc: rename "xdp" and "dev" in enetc_setup_bpf()

Follow the convention from this driver, which is to name "struct
net_device *" as "ndev", and the convention from other drivers, to name
"struct netdev_bpf *" as "bpf".

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: implement ring reconfiguration procedure for PTP RX timestamping
Vladimir Oltean [Tue, 17 Jan 2023 23:02:31 +0000 (01:02 +0200)]
net: enetc: implement ring reconfiguration procedure for PTP RX timestamping

The crude enetc_stop() -> enetc_open() mechanism suffers from 2
problems:

1. improper error checking
2. it involves phylink_stop() -> phylink_start() which loses the link

Right now, the driver is prepared to offer a better alternative: a ring
reconfiguration procedure which takes the RX BD size (normal or
extended) as argument. It allocates new resources (failing if that
fails), stops the traffic, and assigns the new resources to the rings.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: move phylink_start/stop out of enetc_start/stop
Vladimir Oltean [Tue, 17 Jan 2023 23:02:30 +0000 (01:02 +0200)]
net: enetc: move phylink_start/stop out of enetc_start/stop

We want to introduce a fast interface reconfiguration procedure, which
involves temporarily stopping the rings.

But we want enetc_start() and enetc_stop() to not restart PHY autoneg,
because that can take a few seconds until it completes again.

So we need part of enetc_start() and enetc_stop(), but not all of them.
Move phylink_start() right next to phylink_of_phy_connect(), and
phylink_stop() right next to phylink_disconnect_phy(), both still in
ndo_open() and ndo_stop().

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: split ring resource allocation from assignment
Vladimir Oltean [Tue, 17 Jan 2023 23:02:29 +0000 (01:02 +0200)]
net: enetc: split ring resource allocation from assignment

We have a few instances in the enetc driver where the ring resources
(BD ring iomem, software BD ring, software TSO headers, basically
everything except RX buffers) need to be reallocated. For example, when
RX timestamping is enabled, the RX BD format changes to an extended one
(twice as large).

Currently, this is done using a simplistic enetc_close() -> enetc_open()
procedure. But this is quite crude, since it also invokes phylink_stop()
-> phylink_start(), the link is lost, and a few seconds need to pass for
autoneg to complete again.

In fact it's bad also due to the improper (yolo) error checking. In case
we fail to allocate new resources, we've already freed the old ones, so
the interface is more or less stuck.

To avoid that, we need a system where reconfiguration is possible in a
way in which resources are allocated upfront. This means that there will
be a higher memory usage temporarily, but the assignment of resources to
rings can be done when both the old and new resources are still available.

Introduce a struct enetc_bdr_resource which holds the resources for a
ring, be it RX or TX. This structure duplicates a lot of fields from
struct enetc_bdr (and access to the same fields in the ring structure
was left duplicated, to not change cache characteristics in the fast
path).

When enetc_alloc_tx_resources() runs, it returns an array of resource
elements (one per TX ring), in addition to the existing priv->tx_res.
To populate priv->tx_res with that array, one must call
enetc_assign_tx_resources(), and this also frees the old resources.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: bring "bool extended" to top-level in enetc_open()
Vladimir Oltean [Tue, 17 Jan 2023 23:02:28 +0000 (01:02 +0200)]
net: enetc: bring "bool extended" to top-level in enetc_open()

Extended RX buffer descriptors are necessary if they carry RX
timestamps, which will be true when PTP timestamping is enabled.

Right now, the rx_ring->ext_en is set from the function that allocates
ring resources (enetc_alloc_rx_resources() -> enetc_alloc_rxbdr()), and
also used later, in enetc_setup_rxbdr(). It is also used in the
enetc_rxbd() and enetc_rxbd_next() fast path helpers.

We want to decouple resource allocation from BD ring setup, but both
procedures depend on BD size (extended or not). Move the "extended"
boolean to enetc_open() and pass it both to the RX allocation procedure
as well as to the RX ring setup procedure. The latter will set
rx_ring->ext_en from now on.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: drop redundant enetc_free_tx_frame() call from enetc_free_txbdr()
Vladimir Oltean [Tue, 17 Jan 2023 23:02:27 +0000 (01:02 +0200)]
net: enetc: drop redundant enetc_free_tx_frame() call from enetc_free_txbdr()

The call path in enetc_close() is:

enetc_close()
-> enetc_free_rxtx_rings()
   -> enetc_free_tx_ring()
      -> enetc_free_tx_frame()
-> enetc_free_tx_resources()
   -> enetc_free_txbdr()
      -> enetc_free_tx_frame()

The enetc_free_tx_frame() function is written such that the second call
exits without doing anything, but nonetheless, it is completely
redundant. Delete it. This makes the TX teardown path more similar to
the RX one, where rx_swbd freeing is done in enetc_free_rx_ring(), not
in enetc_free_rxbdr().

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: rx_swbd and tx_swbd are never NULL in enetc_free_rxtx_rings()
Vladimir Oltean [Tue, 17 Jan 2023 23:02:26 +0000 (01:02 +0200)]
net: enetc: rx_swbd and tx_swbd are never NULL in enetc_free_rxtx_rings()

The call path in enetc_close() is:

enetc_close()
-> enetc_free_rxtx_rings()
   -> enetc_free_rx_ring()
      -> tests whether rx_ring->rx_swbd is NULL
   -> enetc_free_tx_ring()
      -> tests whether tx_ring->tx_swbd is NULL
-> enetc_free_rx_resources()
   -> enetc_free_rxbdr()
      -> sets rxr->rx_swbd to NULL
-> enetc_free_tx_resources()
   -> enetc_free_txbdr()
      -> setx txr->tx_swbd to NULL

From the above, it is clear that due to the function ordering, the
checks for NULL are redundant, since the software buffer descriptor
arrays have not yet been set to NULL. Drop these checks.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: create enetc_dma_free_bdr()
Vladimir Oltean [Tue, 17 Jan 2023 23:02:25 +0000 (01:02 +0200)]
net: enetc: create enetc_dma_free_bdr()

This is a refactoring change which introduces the opposite function of
enetc_dma_alloc_bdr().

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: set up RX ring indices from enetc_setup_rxbdr()
Vladimir Oltean [Tue, 17 Jan 2023 23:02:24 +0000 (01:02 +0200)]
net: enetc: set up RX ring indices from enetc_setup_rxbdr()

There is only one place which needs to set up indices in the RX ring.
Be consistent with what was done in the TX path and do this in
enetc_setup_rxbdr().

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: enetc: set next_to_clean/next_to_use just from enetc_setup_txbdr()
Vladimir Oltean [Tue, 17 Jan 2023 23:02:23 +0000 (01:02 +0200)]
net: enetc: set next_to_clean/next_to_use just from enetc_setup_txbdr()

enetc_alloc_txbdr() deals with allocating resources necessary for a TX
ring to work (the array of software BDs and the array of TSO headers).

The next_to_clean and next_to_use pointers are overwritten with proper
values which are read from hardware here:

enetc_open
-> enetc_alloc_tx_resources
   -> enetc_alloc_txbdr
      -> set to zero
-> enetc_setup_bdrs
   -> enetc_setup_txbdr
      -> read from hardware

So their initialization with zeroes is pointless and confusing.
Delete it.

Consequently, since enetc_setup_txbdr() has no opposite cleanup
function, also delete the resetting of these indices from
enetc_free_tx_ring().

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agoxdp: document xdp_do_flush() before napi_complete_done()
Magnus Karlsson [Tue, 17 Jan 2023 09:43:05 +0000 (10:43 +0100)]
xdp: document xdp_do_flush() before napi_complete_done()

Document in the XDP_REDIRECT manual section that drivers must call
xdp_do_flush() before napi_complete_done(). The two reasons behind
this can be found following the links below.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/r/20221220185903.1105011-1-sbohrer@cloudflare.com
Link: https://lore.kernel.org/all/20210624160609.292325-1-toke@redhat.com/
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agoMerge branch 'sparx5-vcap-improve-locking'
David S. Miller [Wed, 18 Jan 2023 14:31:43 +0000 (14:31 +0000)]
Merge branch 'sparx5-vcap-improve-locking'

Steen Hegelund says:

====================
sparx5: Improve locking in the VCAP API

This improves the VCAP cache and the VCAP rule list protection against
access from different sources.

The VCAP Admin lock protects the list of rules for the VCAP instance as
well as the cache used for encoding and decoding rules.

This series provides dedicated functions for accessing rule statistics,
decoding rule content, verifying if a rule exists and getting a rule with
the lock held, as well as ensuring the use of the lock when the list of
rules or the cache is accessed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agonet: microchip: sparx5: Add lock initialization to the KUNIT tests
Steen Hegelund [Tue, 17 Jan 2023 08:55:44 +0000 (09:55 +0100)]
net: microchip: sparx5: Add lock initialization to the KUNIT tests

Ensure that the KUNIT tests lock instance is initialized before the test is
executed.

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agonet: microchip: sparx5: Improve VCAP admin locking in the VCAP API
Steen Hegelund [Tue, 17 Jan 2023 08:55:43 +0000 (09:55 +0100)]
net: microchip: sparx5: Improve VCAP admin locking in the VCAP API

This improves the VCAP cache and the VCAP rule list protection against
access from different sources.

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agonet: microchip: sparx5: Add VCAP admin locking in debugFS
Steen Hegelund [Tue, 17 Jan 2023 08:55:42 +0000 (09:55 +0100)]
net: microchip: sparx5: Add VCAP admin locking in debugFS

This ensures that the admin lock is taken before the debugFS functions
starts iterating the VCAP rules.
It also adds a separate function to decode a rule, which expects the lock
to have been taken before it is called.

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agonet: microchip: sparx5: Add support to check for existing VCAP rule id
Steen Hegelund [Tue, 17 Jan 2023 08:55:41 +0000 (09:55 +0100)]
net: microchip: sparx5: Add support to check for existing VCAP rule id

Add a new function that just checks if the VCAP rule id is already used by
an existing rule.

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agonet: microchip: sparx5: Add support for rule count by cookie
Steen Hegelund [Tue, 17 Jan 2023 08:55:40 +0000 (09:55 +0100)]
net: microchip: sparx5: Add support for rule count by cookie

This adds support for TC clients to get the packet count for a TC filter
identified by its cookie.

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agor8152: avoid to change cfg for all devices
Hayes Wang [Tue, 17 Jan 2023 03:03:44 +0000 (11:03 +0800)]
r8152: avoid to change cfg for all devices

The rtl8152_cfgselector_probe() should set the USB configuration to the
vendor mode only for the devices which the driver (r8152) supports.
Otherwise, no driver would be used for such devices.

Fixes: ec51fbd1b8a2 ("r8152: add USB device driver for config selection")
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agonet: macb: simplify TX timestamp handling
Robert Hancock [Mon, 16 Jan 2023 22:08:34 +0000 (16:08 -0600)]
net: macb: simplify TX timestamp handling

This driver was capturing the TX timestamp values from the TX ring
during the TX completion path, but deferring the actual packet TX
timestamp updating to a workqueue. There does not seem to be much of a
reason for this with the current state of the driver. Simplify this to
just do the TX timestamping as part of the TX completion path, to avoid
the need for the extra timestamp buffer and workqueue.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agovirtio_net: Reuse buffer free function
Parav Pandit [Mon, 16 Jan 2023 20:27:08 +0000 (22:27 +0200)]
virtio_net: Reuse buffer free function

virtnet_rq_free_unused_buf() helper function to free the buffer
already exists. Avoid code duplication by reusing existing function.

Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Signed-off-by: Parav Pandit <parav@nvidia.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next
David S. Miller [Wed, 18 Jan 2023 13:19:48 +0000 (13:19 +0000)]
Merge git://git./linux/kernel/git/netfilter/nf-next

Florian Westphal says:

====================
Netfilter updates for net-next

following patch set includes netfilter updates for your *net-next* tree.

1. Replace pr_debug use with nf_log infra for debugging in sctp
   conntrack.
2. Remove pr_debug calls, they are either useless or we have better
   options in place.
3. Avoid repeated load of ct->status in some spots.
   Some bit-flags cannot change during the lifeetime of
   a connection, so no need to re-fetch those.
4. Avoid uneeded nesting of rcu_read_lock during tuple lookup.
5. Remove the CLUSTERIP target.  Marked as obsolete for years,
   and we still have WARN splats wrt. races of the out-of-band
   /proc interface installed by this target.
6. Add static key to nf_tables to avoid the retpoline mitigation
   if/else if cascade provided the cpu doesn't need the retpoline thunk.
7. add nf_tables objref calls to the retpoline mitigation workaround.
8. Split parts of nft_ct.c that do not need symbols exported by
   the conntrack modules and place them in nf_tables directly.
   This allows to avoid indirect call for 'ct status' checks.
9. Add 'destroy' commands to nf_tables.  They are identical
   to the existing 'delete' commands, but do not indicate
   an error if the referenced object (set, chain, rule...)
   did not exist, from Fernando.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agoMerge branch 'tsnep-xdp-support'
David S. Miller [Wed, 18 Jan 2023 13:17:06 +0000 (13:17 +0000)]
Merge branch 'tsnep-xdp-support'

Gerhard Engleder says:

====================
tsnep: XDP support

Implement XDP support for tsnep driver. I tried to follow existing
drivers like igb/igc as far as possible. Some prework was already done
in previous patch series, so in this series only actual XDP stuff is
included.

Thanks for the NetDev 0x14 slides "Add XDP support on a NIC driver".

Some commits contain changes not related to XDP but found during review
of XDP support patches.

v5:
- fix spelling of 'subtract' in commit message (Alexander Duyck)
- call txq_trans_cond_update() only if TX is complete (Alexander Duyck)
- remove const from static functions (Alexander Duyck)
- replace TX spin_lock with __netif_tx_lock (Alexander Duyck)
- use xdp_return_frame_rx_napi() instead of xdp_return_frame_bulk() (Alexander Duyck)
- eliminate __TSNEP_DOWN (Alexander Duyck)
- introduce single function for xdp_rxq and napi init (Alexander Duyck)
- use TX queue of pair instead of expensive processor id modulo for XDP_TX (Alexander Duyck)
- eliminate processor id modulo in tsnep_netdev_xdp_xmit (Alexander Duyck)
- use bitmap for TX type and add fragment type (Alexander Duyck)
- always use XDP_PACKET_HEADROOM and DMA_BIDIRECTIONAL

v4:
- remove process context from spin_lock_bh commit message (Alexander Lobakin)
- move tsnep_adapter::state to prevent 4 byte hole (Alexander Lobakin)
- braces for bitops in combination logical ops (Alexander Lobakin)
- make various pointers const (Alexander Lobakin)
- '!i' instead of 'i == 0' (Alexander Lobakin)
- removed redundant braces (Alexander Lobakin)
- squash variables into same line if same type (Alexander Lobakin)
- use fact that ::skb and ::xdpf use same slot for simplification (Alexander Lobakin)
- use u32 for smp_processor_id() (Alexander Lobakin)
- don't add $(tsnep-y) to $(tsnep-objs) (Alexander Lobakin)
- use rev xmas tree in tsnep_netdev_open() (Alexander Lobakin)
- do not move tsnep_queue::napi (Alexander Lobakin)
- call xdp_init_buff() only once (Alexander Lobakin)
- get nq and tx only once for XDP TX (Alexander Lobakin)
- move XDP BPF program setup to end of patch series (Alexander Lobakin)
- check for XDP state change and prevent redundant down-ups (Alexander Lobakin)
- access tsnep_adapter::xdp_prog only with READ_ONCE in RX path (Alexander Lobakin)
- forward NAPI budget to napi_consume_skb() (Alexander Lobakin)
- fix errno leftover in tsnep_xdp_xmit_back() (Dan Carpenter)
- eliminate tsnep_xdp_is_enabled() by setting RX offset during init

v3:
- use spin_lock_bh for TX (Paolo Abeni)
- add comment for XDP TX descriptor available check (Maciej Fijalkowski)
- return value bool for tsnep_xdp_xmit_frame_ring() (Saeed Mahameed)
- do not print DMA mapping error (Saeed Mahameed)
- use reverse xmas tree variable declaration (Saeed Mahameed)
- move struct xdp_rxq_info to end of struct tsnep_rx (Maciej Fijalkowski)
- check __TSNEP_DOWN flag on close to prevent double free (Saeed Mahameed)
- describe TSNEP_RX_INLINE_METADATA_SIZE in comment (Maciej Fijalkowski)
- substract TSNEP_RX_INLINE_METADATA_SIZE after DMA sync (Maciej Fijalkowski)
- use enum tsnep_tx_type for tsnep_xdp_tx_map (Saeed Mahameed)
- use nxmit as loop iterator in tsnep_netdev_xdp_xmit (Saeed Mahameed)
- stop netdev in tsnep_netdev_close() which is called during BPF prog setup

v2:
- move tsnep_xdp_xmit_back() to commit where it is used (Paolo Abeni)
- remove inline from tsnep_rx_offset() (Paolo Abeni)
- remove inline from tsnep_rx_offset_xdp() (Paolo Abeni)
- simplify tsnep_xdp_run_prog() call by moving xdp_status update to it (Paolo Abeni)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agotsnep: Support XDP BPF program setup
Gerhard Engleder [Mon, 16 Jan 2023 20:24:58 +0000 (21:24 +0100)]
tsnep: Support XDP BPF program setup

Implement setup of BPF programs for XDP RX path with command
XDP_SETUP_PROG of ndo_bpf(). This is the final step for XDP RX path
support.

There is no need to reinit the RX queues as they are always prepared for
XDP.

Additionally remove $(tsnep-y) from $(tsnep-objs) because it is added
automatically.

Test results with A53 1.2GHz:

XDP_DROP (samples/bpf/xdp1)
proto 17:     883878 pkt/s

XDP_TX (samples/bpf/xdp2)
proto 17:     255693 pkt/s

XDP_REDIRECT (samples/bpf/xdpsock)
 sock0@eth2:0 rxdrop xdp-drv
                   pps            pkts           1.00
rx                 855,582        5,404,523
tx                 0              0

XDP_REDIRECT (samples/bpf/xdp_redirect)
eth2->eth1         613,267 rx/s   0 err,drop/s   613,272 xmit/s

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agotsnep: Add XDP RX support
Gerhard Engleder [Mon, 16 Jan 2023 20:24:57 +0000 (21:24 +0100)]
tsnep: Add XDP RX support

If BPF program is set up, then run BPF program for every received frame
and execute the selected action.

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agotsnep: Add RX queue info for XDP support
Gerhard Engleder [Mon, 16 Jan 2023 20:24:56 +0000 (21:24 +0100)]
tsnep: Add RX queue info for XDP support

Register xdp_rxq_info with page_pool memory model. This is needed for
XDP buffer handling.

Additionally fix error path by removing call of tsnep_phy_close() after
failed tsnep_phy_open().

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agotsnep: Prepare RX buffer for XDP support
Gerhard Engleder [Mon, 16 Jan 2023 20:24:55 +0000 (21:24 +0100)]
tsnep: Prepare RX buffer for XDP support

Always reserve XDP_PACKET_HEADROOM in front of RX buffer. Similar DMA
direction is always set to DMA_BIDIRECTIONAL. This eliminates the need
for RX queue reconfiguration during BPF program setup. The RX queue is
always prepared for XDP.

No negative impact of DMA_BIDIRECTIONAL was measured.

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agotsnep: Subtract TSNEP_RX_INLINE_METADATA_SIZE once
Gerhard Engleder [Mon, 16 Jan 2023 20:24:54 +0000 (21:24 +0100)]
tsnep: Subtract TSNEP_RX_INLINE_METADATA_SIZE once

Subtract size of metadata in front of received data only once. This
simplifies the RX code.

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agotsnep: Add XDP TX support
Gerhard Engleder [Mon, 16 Jan 2023 20:24:53 +0000 (21:24 +0100)]
tsnep: Add XDP TX support

Implement ndo_xdp_xmit() for XDP TX support. Support for fragmented XDP
frames is included.

Also some braces and logic cleanups are done in normal TX path to keep
both TX paths in sync.

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agotsnep: Do not print DMA mapping error
Gerhard Engleder [Mon, 16 Jan 2023 20:24:52 +0000 (21:24 +0100)]
tsnep: Do not print DMA mapping error

Printing in data path shall be avoided. DMA mapping error is already
counted in stats so printing is not necessary.

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agotsnep: Forward NAPI budget to napi_consume_skb()
Gerhard Engleder [Mon, 16 Jan 2023 20:24:51 +0000 (21:24 +0100)]
tsnep: Forward NAPI budget to napi_consume_skb()

NAPI budget must be forwarded to napi_consume_skb(). It is used to
detect non-NAPI context.

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agotsnep: Replace TX spin_lock with __netif_tx_lock
Gerhard Engleder [Mon, 16 Jan 2023 20:24:50 +0000 (21:24 +0100)]
tsnep: Replace TX spin_lock with __netif_tx_lock

TX spin_lock can be eliminated, because the normal TX path is already
protected with __netif_tx_lock and this lock can be used for access to
queue outside of normal TX path too.

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agonet: ftmac100: handle netdev flags IFF_PROMISC and IFF_ALLMULTI
Sergei Antonov [Mon, 16 Jan 2023 18:27:16 +0000 (21:27 +0300)]
net: ftmac100: handle netdev flags IFF_PROMISC and IFF_ALLMULTI

When netdev->flags has IFF_PROMISC or IFF_ALLMULTI, set the
corresponding bits in the MAC Control Register (MACCR).

This change is based on code from the ftgmac100 driver, see
ftgmac100_start_hw() in ftgmac100.c

Signed-off-by: Sergei Antonov <saproj@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agoipv6: Remove extra counter pull before gc
Tanmay Bhushan [Mon, 16 Jan 2023 14:55:00 +0000 (15:55 +0100)]
ipv6: Remove extra counter pull before gc

Per cpu entries are no longer used in consideration
for doing gc or not. Remove the extra per cpu entries
pull to directly check for time and perform gc.

Signed-off-by: Tanmay Bhushan <007047221b@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agoMerge branch 'am65-cpts-PPS'
David S. Miller [Wed, 18 Jan 2023 12:56:38 +0000 (12:56 +0000)]
Merge branch 'am65-cpts-PPS'

Siddharth Vadapalli says:

====================
Add PPS support to am65-cpts driver

The CPTS hardware doesn't support PPS signal generation. Using the GenFx
(periodic signal generator) function, it is possible to model a PPS signal
followed by routing it via the time sync router to the CPTS_HWy_TS_PUSH
(hardware time stamp) input, in order to generate timestamps at 1 second
intervals.

This series adds driver support for enabling PPS signal generation.
Additionally, the documentation for the am65-cpts driver is updated with
the bindings for the "ti,pps" property, which is used to inform the
pair [CPTS_HWy_TS_PUSH, GenFx] to the cpts driver.

Changes from v1:
1. Drop device-tree patches.
2. Address Roger's comments on the:
   "net: ethernet: ti: am65-cpts: add pps support" patch.
3. Collect Reviewed-by tag from Rob Herring.

v1:
https://lore.kernel.org/r/20230111114429.1297557-1-s-vadapalli@ti.com/
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agonet: ethernet: ti: am65-cpts: adjust pps following ptp changes
Grygorii Strashko [Mon, 16 Jan 2023 08:55:34 +0000 (14:25 +0530)]
net: ethernet: ti: am65-cpts: adjust pps following ptp changes

When CPTS clock is sync/adjusted by running linuxptp (ptp4l) it will cause
PPS jitter as Genf running PPS is not adjusted.

The same PPM adjustment has to be applied to GenF as to PHC clock to
correct PPS length and keep them in sync.

Testing:
 Master:
  ptp4l -P -2 -H -i eth0 -l 6 -m -q -p /dev/ptp1 -f ptp.cfg &
  testptp -d /dev/ptp1 -P 1
  ppstest /dev/pps0

 Slave:
  linuxptp/ptp4l -P -2 -H -i eth0 -l 6 -m -q -p /dev/ptp1 -f ptp1.cfg -s &
    <port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED;>
  testptp -d /dev/ptp1 -P 1
  ppstest /dev/pps0

Master log:
source 0 - assert 620.000000689, sequence: 530
source 0 - assert 621.000000689, sequence: 531
source 0 - assert 622.000000689, sequence: 532
source 0 - assert 623.000000689, sequence: 533
source 0 - assert 624.000000689, sequence: 534
source 0 - assert 625.000000689, sequence: 535
source 0 - assert 626.000000689, sequence: 536
source 0 - assert 627.000000689, sequence: 537
source 0 - assert 628.000000689, sequence: 538
source 0 - assert 629.000000689, sequence: 539
source 0 - assert 630.000000689, sequence: 540
source 0 - assert 631.000000689, sequence: 541
source 0 - assert 632.000000689, sequence: 542
source 0 - assert 633.000000689, sequence: 543
source 0 - assert 634.000000689, sequence: 544
source 0 - assert 635.000000689, sequence: 545

Slave log:
source 0 - assert 620.000000706, sequence: 252
source 0 - assert 621.000000709, sequence: 253
source 0 - assert 622.000000707, sequence: 254
source 0 - assert 623.000000707, sequence: 255
source 0 - assert 624.000000706, sequence: 256
source 0 - assert 625.000000705, sequence: 257
source 0 - assert 626.000000709, sequence: 258
source 0 - assert 627.000000709, sequence: 259
source 0 - assert 628.000000707, sequence: 260
source 0 - assert 629.000000706, sequence: 261
source 0 - assert 630.000000710, sequence: 262
source 0 - assert 631.000000708, sequence: 263
source 0 - assert 632.000000705, sequence: 264
source 0 - assert 633.000000710, sequence: 265
source 0 - assert 634.000000708, sequence: 266
source 0 - assert 635.000000707, sequence: 267

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agonet: ethernet: ti: am65-cpts: add pps support
Grygorii Strashko [Mon, 16 Jan 2023 08:55:33 +0000 (14:25 +0530)]
net: ethernet: ti: am65-cpts: add pps support

CPTS doesn't have HW support for PPS ("pulse per second”) signal
generation, but it can be modeled by using Time Sync Router and routing
GenFx (periodic signal generator) output to CPTS_HWy_TS_PUSH (hardware time
stamp) input, and configuring GenFx to generate 1sec pulses.

     +------------------------+
     |          CPTS          |
     |                        |
 +--->CPTS_HW4_PUSH      GENFx+---+
 |   |                        |   |
 |   +------------------------+   |
 |                                |
 +--------------------------------+

Add corresponding support to am65-cpts driver. The DT property "ti,pps"
has to be used to enable PPS support and configure pair
[CPTS_HWy_TS_PUSH, GenFx].

Once enabled, PPS can be tested using ppstest tool:
 # ./ppstest /dev/pps0

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agodt-binding: net: ti: am65x-cpts: add 'ti,pps' property
Grygorii Strashko [Mon, 16 Jan 2023 08:55:32 +0000 (14:25 +0530)]
dt-binding: net: ti: am65x-cpts: add 'ti,pps' property

Add the ti,pps property used to indicate the pair of HWx_TS_PUSH input and
the TS_GENFy output.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agoMerge branch 'stmmac-imx93'
David S. Miller [Wed, 18 Jan 2023 12:47:40 +0000 (12:47 +0000)]
Merge branch 'stmmac-imx93'

Clark Wang says:

====================
stmmac: Add eqos and fec support for imx93

This patchset add imx93 support for dwmac-imx glue driver.
There are some changes of GPR implement.
And add fec and eqos nodes for imx93 dts.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agoarm64: dts: imx93-11x11-evk: enable fec function
Clark Wang [Fri, 13 Jan 2023 03:33:47 +0000 (11:33 +0800)]
arm64: dts: imx93-11x11-evk: enable fec function

Enable FEC function for imx93-11x11-evk board.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agoarm64: dts: imx93-11x11-evk: enable eqos
Clark Wang [Fri, 13 Jan 2023 03:33:46 +0000 (11:33 +0800)]
arm64: dts: imx93-11x11-evk: enable eqos

Enable EQoS function for imx93-11x11-evk board.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agoarm64: dts: imx93: add FEC support
Clark Wang [Fri, 13 Jan 2023 03:33:45 +0000 (11:33 +0800)]
arm64: dts: imx93: add FEC support

Add FEC node for imx93 platform.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agoarm64: dts: imx93: add eqos support
Clark Wang [Fri, 13 Jan 2023 03:33:44 +0000 (11:33 +0800)]
arm64: dts: imx93: add eqos support

Add EQoS node for imx93 platform.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agodt-bindings: net: fec: add mx93 description
Clark Wang [Fri, 13 Jan 2023 03:33:43 +0000 (11:33 +0800)]
dt-bindings: net: fec: add mx93 description

Add mx93 compatible string for fec driver.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agodt-bindings: add mx93 description
Clark Wang [Fri, 13 Jan 2023 03:33:42 +0000 (11:33 +0800)]
dt-bindings: add mx93 description

Add mx93 compatible string for eqos driver.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agonet: stmmac: add imx93 platform support
Clark Wang [Fri, 13 Jan 2023 03:33:41 +0000 (11:33 +0800)]
net: stmmac: add imx93 platform support

Add imx93 platform support for dwmac-imx driver.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 months agonetfilter: nf_tables: add support to destroy operation
Fernando Fernandez Mancera [Mon, 2 Jan 2023 14:42:34 +0000 (15:42 +0100)]
netfilter: nf_tables: add support to destroy operation

Introduce NFT_MSG_DESTROY* message type. The destroy operation performs a
delete operation but ignoring the ENOENT errors.

This is useful for the transaction semantics, where failing to delete an
object which does not exist results in aborting the transaction.

This new command allows the transaction to proceed in case the object
does not exist.

Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
23 months agonetfilter: nf_tables: avoid retpoline overhead for some ct expression calls
Florian Westphal [Tue, 3 Jan 2023 12:47:17 +0000 (13:47 +0100)]
netfilter: nf_tables: avoid retpoline overhead for some ct expression calls

nft_ct expression cannot be made builtin to nf_tables without also
forcing the conntrack itself to be builtin.

However, this can be avoided by splitting retrieval of a few
selector keys that only need to access the nf_conn structure,
i.e. no function calls to nf_conntrack code.

Many rulesets start with something like
"ct status established,related accept"

With this change, this no longer requires an indirect call, which
gives about 1.8% more throughput with a simple conntrack-enabled
forwarding test (retpoline thunk used).

Signed-off-by: Florian Westphal <fw@strlen.de>
23 months agonetfilter: nf_tables: avoid retpoline overhead for objref calls
Florian Westphal [Tue, 3 Jan 2023 12:47:16 +0000 (13:47 +0100)]
netfilter: nf_tables: avoid retpoline overhead for objref calls

objref expression is builtin, so avoid calls to it for
RETOLINE=y builds.

Signed-off-by: Florian Westphal <fw@strlen.de>
23 months agonetfilter: nf_tables: add static key to skip retpoline workarounds
Florian Westphal [Tue, 3 Jan 2023 12:47:15 +0000 (13:47 +0100)]
netfilter: nf_tables: add static key to skip retpoline workarounds

If CONFIG_RETPOLINE is enabled nf_tables avoids indirect calls for
builtin expressions.

On newer cpus indirect calls do not go through the retpoline thunk
anymore, even for RETPOLINE=y builds.

Just like with the new tc retpoline wrappers:
Add a static key to skip the if / else if cascade if the cpu
does not require retpolines.

Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
23 months agonetfilter: ip_tables: remove clusterip target
Florian Westphal [Thu, 5 Jan 2023 19:22:02 +0000 (20:22 +0100)]
netfilter: ip_tables: remove clusterip target

Marked as 'to be removed soon' since kernel 4.1 (2015).
Functionality was superseded by the 'cluster' match, added in kernel
2.6.30 (2009).

clusterip_tg_check still has races that can give

 proc_dir_entry 'ipt_CLUSTERIP/10.1.1.2' already registered

followed by a WARN splat.

Remove it instead of trying to fix this up again.
clusterip uapi header is left as-is for now.

Signed-off-by: Florian Westphal <fw@strlen.de>
23 months agonetfilter: conntrack: move rcu read lock to nf_conntrack_find_get
Florian Westphal [Fri, 16 Dec 2022 01:46:28 +0000 (02:46 +0100)]
netfilter: conntrack: move rcu read lock to nf_conntrack_find_get

Move rcu_read_lock/unlock to nf_conntrack_find_get(), this avoids
nested rcu_read_lock call from resolve_normal_ct().

Signed-off-by: Florian Westphal <fw@strlen.de>
23 months agonetfilter: conntrack: avoid reload of ct->status
Florian Westphal [Mon, 2 Jan 2023 11:46:12 +0000 (12:46 +0100)]
netfilter: conntrack: avoid reload of ct->status

Compiler can't merge the two test_bit() calls, so load ct->status
once and use non-atomic accesses.

This is fine because IPS_EXPECTED or NAT_CLASH are either set at ct
creation time or not at all, but compiler can't know that.

Signed-off-by: Florian Westphal <fw@strlen.de>
23 months agonetfilter: conntrack: remove pr_debug calls
Florian Westphal [Mon, 2 Jan 2023 11:46:11 +0000 (12:46 +0100)]
netfilter: conntrack: remove pr_debug calls

Those are all useless or dubious.
getorigdst() is called via setsockopt, so return value/errno will
already indicate an appropriate error.

For other pr_debug calls there are better replacements, such as
slab/slub debugging or 'conntrack -E' (ctnetlink events).

Signed-off-by: Florian Westphal <fw@strlen.de>
23 months agonetfilter: conntrack: sctp: use nf log infrastructure for invalid packets
Florian Westphal [Mon, 2 Jan 2023 11:46:10 +0000 (12:46 +0100)]
netfilter: conntrack: sctp: use nf log infrastructure for invalid packets

The conntrack logging facilities include useful info such as in/out
interface names and packet headers.

Use those in more places instead of pr_debug calls.
Furthermore, several pr_debug calls can be removed, they are useless
on production machines due to the sheer volume of log messages.

Signed-off-by: Florian Westphal <fw@strlen.de>
23 months agoMerge branch 'net-mdio-continue-separating-c22-and-c45'
Jakub Kicinski [Wed, 18 Jan 2023 03:34:10 +0000 (19:34 -0800)]
Merge branch 'net-mdio-continue-separating-c22-and-c45'

Michael Walle says:

====================
net: mdio: Continue separating C22 and C45

I've picked this older series from Andrew up and rebased it onto
the latest net-next.

This is the third (and hopefully last) patch set in the series which
separates the C22 and C45 MDIO bus transactions at the API level to the
MDIO bus drivers.

The first patch is a newer version of the former "net: dsa: Separate C22
and C45 MDIO bus transaction methods", which only contains the mt7530
changes. Although posted as v1, because this is a new series, there
is a changelog included in the patch comment section.

The last patch is a new one, which isn't from Andrew's tree.
====================

Link: https://lore.kernel.org/r/20230116-net-next-c45-seperation-part-3-v1-0-0c53afa56aad@walle.cc
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: ethernet: renesas: rswitch: C45 only transactions
Michael Walle [Mon, 16 Jan 2023 23:52:27 +0000 (00:52 +0100)]
net: ethernet: renesas: rswitch: C45 only transactions

The rswitch MDIO bus driver only supports C45 transfers. Update the
function names to make this clear, pass the mmd as a parameter, and
register the accessors to the _c45 ops of the bus driver structure.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: dsa: sja1105: Separate C22 and C45 transactions for T1 MDIO bus
Andrew Lunn [Mon, 16 Jan 2023 23:52:26 +0000 (00:52 +0100)]
net: dsa: sja1105: Separate C22 and C45 transactions for T1 MDIO bus

The T1 MDIO bus driver can perform both C22 and C45 transfers. Create
separate functions for each and register the C45 versions using the
new API calls where appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: dsa: sja1105: C45 only transactions for PCS
Andrew Lunn [Mon, 16 Jan 2023 23:52:25 +0000 (00:52 +0100)]
net: dsa: sja1105: C45 only transactions for PCS

The sja1105 MDIO bus driver only supports C45 transfers. Update the
function names to make this clear, pass the mmd as a parameter, and
register the accessors to the _c45 ops of the bus driver structure.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agoamd-xgbe: Replace MII_ADDR_C45 with XGBE_ADDR_C45
Andrew Lunn [Mon, 16 Jan 2023 23:52:24 +0000 (00:52 +0100)]
amd-xgbe: Replace MII_ADDR_C45 with XGBE_ADDR_C45

The xgbe driver reuses MII_ADDR_C45 for its own purpose. The values
derived with it are never passed to phylib or a linux MDIO bus driver.
In order that MII_ADDR_C45 can be removed, add an XGBE specific

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agoamd-xgbe: Separate C22 and C45 transactions
Andrew Lunn [Mon, 16 Jan 2023 23:52:23 +0000 (00:52 +0100)]
amd-xgbe: Separate C22 and C45 transactions

The xgbe MDIO bus driver can perform both C22 and C45 transfers, when
using its MDIO bus hardware. The SFP I2C mdio bus driver only supports
C22. Create separate functions for each and register the C45 versions
using the new API calls where appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: hns: Separate C22 and C45 transactions
Andrew Lunn [Mon, 16 Jan 2023 23:52:22 +0000 (00:52 +0100)]
net: hns: Separate C22 and C45 transactions

The hns MDIO bus driver can perform both C22 and C45 transfers.
Create separate functions for each and register the C45 versions using
the new API calls where appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agoixgbe: Use C45 mdiobus accessors
Andrew Lunn [Mon, 16 Jan 2023 23:52:21 +0000 (00:52 +0100)]
ixgbe: Use C45 mdiobus accessors

When performing a C45 bus transaction, make use of the c45 variants of
the bus read/write helpers. The ability to pass a special register
value is being removed to clean up the mdio bus driver API.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agoixgbe: Separate C22 and C45 transactions
Andrew Lunn [Mon, 16 Jan 2023 23:52:20 +0000 (00:52 +0100)]
ixgbe: Separate C22 and C45 transactions

The ixgbe MDIO bus driver can perform both C22 and C45 transfers.
Create separate functions for each and register the C45 versions using
the new API calls where appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: macb: Separate C22 and C45 transactions
Andrew Lunn [Mon, 16 Jan 2023 23:52:19 +0000 (00:52 +0100)]
net: macb: Separate C22 and C45 transactions

The macb MDIO bus driver can perform both C22 and C45 transfers.
Create separate functions for each and register the C45 versions using
the new API calls where appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: nixge: Separate C22 and C45 transactions
Andrew Lunn [Mon, 16 Jan 2023 23:52:18 +0000 (00:52 +0100)]
net: nixge: Separate C22 and C45 transactions

The nixge MDIO bus driver can perform both C22 and C45 transfers.
Create separate functions for each and register the C45 versions using
the new API calls where appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: sxgbe: Separate C22 and C45 transactions
Andrew Lunn [Mon, 16 Jan 2023 23:52:17 +0000 (00:52 +0100)]
net: sxgbe: Separate C22 and C45 transactions

The sxgdb MDIO bus driver can perform both C22 and C45 transfers.
Create separate functions for each and register the C45 versions using
the new API calls where appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: dsa: mt7530: Separate C22 and C45 MDIO bus transactions
Andrew Lunn [Mon, 16 Jan 2023 23:52:16 +0000 (00:52 +0100)]
net: dsa: mt7530: Separate C22 and C45 MDIO bus transactions

mt7530 does support C45, but its uses a mix of registering its MDIO
bus and providing its private MDIO bus to the DSA core, too. This makes
the change a bit more complex.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: wangxun: clean up the code
Mengyuan Lou [Mon, 16 Jan 2023 10:38:39 +0000 (18:38 +0800)]
net: wangxun: clean up the code

Convert various mult-bit fields to be defined using GENMASK/FIELD_PREP.
Simplify the code with the ternary operator.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230116103839.84087-1-mengyuanlou@net-swift.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agoMerge tag 'i2c-fwnode-api-2023017' of https://git.kernel.org/pub/scm/linux/kernel...
Jakub Kicinski [Wed, 18 Jan 2023 03:16:28 +0000 (19:16 -0800)]
Merge tag 'i2c-fwnode-api-2023017' of https://git./linux/kernel/git/wsa/linux

Wolfram Sang says:

====================
Immutable branch adding fwnode API to the I2C core

I2C changes requested by Russell King.
This allows him to rework SFP code further.

* tag 'i2c-fwnode-api-2023017' of https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: add fwnode APIs
====================

Link: https://lore.kernel.org/r/Y8ZhI4g0wsvpjokd@ninjato/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agoMerge tag 'regmap-mdio-c45-rework' of https://git.kernel.org/pub/scm/linux/kernel...
Jakub Kicinski [Wed, 18 Jan 2023 03:09:42 +0000 (19:09 -0800)]
Merge tag 'regmap-mdio-c45-rework' of https://git./linux/kernel/git/broonie/regmap

Mark Brown says:

====================
regmap: Rework regmap_mdio_c45_{read|write} for new C45 API.

This reworks the regmap MDIO handling of C45 addresses in
preparation for some forthcoming updates to the networking code.

* tag 'regmap-mdio-c45-rework' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: Rework regmap_mdio_c45_{read|write} for new C45 API.
====================

Link: https://lore.kernel.org/r/Y8VjkgcWHjR9TzNw@sirena.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 months agonet: mdio: cavium: Remove unneeded simicolons
Andrew Lunn [Sun, 15 Jan 2023 16:42:03 +0000 (17:42 +0100)]
net: mdio: cavium: Remove unneeded simicolons

The recent refactoring to split C22 and C45 introduced two unneeded
semiconons which the kernel test bot reported. Remove them.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 93641ecbaa1f ("net: mdio: cavium: Separate C22 and C45 transactions")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20230115164203.510615-1-andrew@lunn.ch
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
23 months agoinet: fix fast path in __inet_hash_connect()
Pietro Borrello [Sat, 14 Jan 2023 13:11:41 +0000 (13:11 +0000)]
inet: fix fast path in __inet_hash_connect()

__inet_hash_connect() has a fast path taken if sk_head(&tb->owners) is
equal to the sk parameter.
sk_head() returns the hlist_entry() with respect to the sk_node field.
However entries in the tb->owners list are inserted with respect to the
sk_bind_node field with sk_add_bind_node().
Thus the check would never pass and the fast path never execute.

This fast path has never been executed or tested as this bug seems
to be present since commit 1da177e4c3f4 ("Linux-2.6.12-rc2"), thus
remove it to reduce code complexity.

Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20230112-inet_hash_connect_bind_head-v3-1-b591fd212b93@diag.uniroma1.it
Signed-off-by: Paolo Abeni <pabeni@redhat.com>