platform/kernel/linux-starfive.git
3 years agonet: dsa: sja1105: don't keep a persistent reference to the reset GPIO
Vladimir Oltean [Wed, 22 Sep 2021 15:10:29 +0000 (18:10 +0300)]
net: dsa: sja1105: don't keep a persistent reference to the reset GPIO

The driver only needs the reset GPIO for a very brief period, so instead
of using devres and keeping the descriptor pointer inside priv, just use
that descriptor inside the sja1105_hw_reset function and then let go of
it.

Also use gpiod_get_optional while at it, and error out on real errors
(bad flags etc).

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'ja1105-deps'
David S. Miller [Thu, 23 Sep 2021 11:45:07 +0000 (12:45 +0100)]
Merge branch 'ja1105-deps'

Vladimir Oltean says:

====================
Fix circular dependency between sja1105 and tag_sja1105

As discussed here:
https://lore.kernel.org/netdev/20210908220834.d7gmtnwrorhharna@skbuf/
DSA tagging protocols cannot use symbols exported by switch drivers.

Eliminate the two instances of that from tag_sja1105, and that allows us
to have a working setup with modules again.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: sja1105: break dependency between dsa_port_is_sja1105 and switch driver
Vladimir Oltean [Wed, 22 Sep 2021 14:37:26 +0000 (17:37 +0300)]
net: dsa: sja1105: break dependency between dsa_port_is_sja1105 and switch driver

It's nice to be able to test a tagging protocol with dsa_loop, but not
at the cost of losing the ability of building the tagging protocol and
switch driver as modules, because as things stand, there is a circular
dependency between the two. Tagging protocol drivers cannot depend on
switch drivers, that is a hard fact.

The reasoning behind the blamed patch was that accessing dp->priv should
first make sure that the structure behind that pointer is what we really
think it is.

Currently the "sja1105" and "sja1110" tagging protocols only operate
with the sja1105 switch driver, just like any other tagging protocol and
switch combination. The only way to mix and match them is by modifying
the code, and this applies to dsa_loop as well (by default that uses
DSA_TAG_PROTO_NONE). So while in principle there is an issue, in
practice there isn't one.

Until we extend dsa_loop to allow user space configuration, treat the
problem as a non-issue and just say that DSA ports found by tag_sja1105
are always sja1105 ports, which is in fact true. But keep the
dsa_port_is_sja1105 function so that it's easy to patch it during
testing, and rely on dead code elimination.

Fixes: 994d2cbb08ca ("net: dsa: tag_sja1105: be dsa_loop-safe")
Link: https://lore.kernel.org/netdev/20210908220834.d7gmtnwrorhharna@skbuf/
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: move sja1110_process_meta_tstamp inside the tagging protocol driver
Vladimir Oltean [Wed, 22 Sep 2021 14:37:25 +0000 (17:37 +0300)]
net: dsa: move sja1110_process_meta_tstamp inside the tagging protocol driver

The problem is that DSA tagging protocols really must not depend on the
switch driver, because this creates a circular dependency at insmod
time, and the switch driver will effectively not load when the tagging
protocol driver is missing.

The code was structured in the way it was for a reason, though. The DSA
driver-facing API for PTP timestamping relies on the assumption that
two-step TX timestamps are provided by the hardware in an out-of-band
manner, typically by raising an interrupt and making that timestamp
available inside some sort of FIFO which is to be accessed over
SPI/MDIO/etc.

So the API puts .port_txtstamp into dsa_switch_ops, because it is
expected that the switch driver needs to save some state (like put the
skb into a queue until its TX timestamp arrives).

On SJA1110, TX timestamps are provided by the switch as Ethernet
packets, so this makes them be received and processed by the tagging
protocol driver. This in itself is great, because the timestamps are
full 64-bit and do not require reconstruction, and since Ethernet is the
fastest I/O method available to/from the switch, PTP timestamps arrive
very quickly, no matter how bottlenecked the SPI connection is, because
SPI interaction is not needed at all.

DSA's code structure and strict isolation between the tagging protocol
driver and the switch driver break the natural code organization.

When the tagging protocol driver receives a packet which is classified
as a metadata packet containing timestamps, it passes those timestamps
one by one to the switch driver, which then proceeds to compare them
based on the recorded timestamp ID that was generated in .port_txtstamp.

The communication between the tagging protocol and the switch driver is
done through a method exported by the switch driver, sja1110_process_meta_tstamp.
To satisfy build requirements, we force a dependency to build the
tagging protocol driver as a module when the switch driver is a module.
However, as explained in the first paragraph, that causes the circular
dependency.

To solve this, move the skb queue from struct sja1105_private :: struct
sja1105_ptp_data to struct sja1105_private :: struct sja1105_tagger_data.
The latter is a data structure for which hacks have already been put
into place to be able to create persistent storage per switch that is
accessible from the tagging protocol driver (see sja1105_setup_ports).

With the skb queue directly accessible from the tagging protocol driver,
we can now move sja1110_process_meta_tstamp into the tagging driver
itself, and avoid exporting a symbol.

Fixes: 566b18c8b752 ("net: dsa: sja1105: implement TX timestamping for SJA1110")
Link: https://lore.kernel.org/netdev/20210908220834.d7gmtnwrorhharna@skbuf/
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: sja1105: remove sp->dp
Vladimir Oltean [Wed, 22 Sep 2021 13:57:03 +0000 (16:57 +0300)]
net: dsa: sja1105: remove sp->dp

It looks like this field was never used since its introduction in commit
227d07a07ef1 ("net: dsa: sja1105: Add support for traffic through
standalone ports") remove it.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'mlxsw-trap-adjacency'
David S. Miller [Wed, 22 Sep 2021 13:35:02 +0000 (14:35 +0100)]
Merge branch 'mlxsw-trap-adjacency'

Ido Schimmel says:

====================
mlxsw: Alter trap adjacency entry allocation scheme

In commit 0c3cbbf96def ("mlxsw: Add specific trap for packets routed via
invalid nexthops"), mlxsw started allocating a new adjacency entry
during driver initialization, to trap packets routed via invalid
nexthops.

This behavior was later altered in commit 983db6198f0d ("mlxsw:
spectrum_router: Allocate discard adjacency entry when needed") to only
allocate the entry upon the first route that requires it. The motivation
for the change is explained in the commit message.

The problem with the current behavior is that the entry shows up as a
"leak" in a new BPF resource monitoring tool [1]. This is caused by the
asymmetry of the allocation/free scheme. While the entry is allocated
upon the first route that requires it, it is only freed during
de-initialization of the driver.

Instead, this patchset tracks the number of active nexthop groups and
allocates the adjacency entry upon the creation of the first group. The
entry is freed when the number of active groups reaches zero.

Patch #1 adds the new entry.

Patch #2 converts mlxsw to start using the new entry and removes the old
one.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomlxsw: spectrum_router: Start using new trap adjacency entry
Ido Schimmel [Wed, 22 Sep 2021 07:36:42 +0000 (10:36 +0300)]
mlxsw: spectrum_router: Start using new trap adjacency entry

Start using the trap adjacency entry that was added in the previous
patch and remove the existing one which is no longer needed.

Note that the name of the old entry was inaccurate as the entry did not
discard packets, but trapped them.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomlxsw: spectrum_router: Add trap adjacency entry upon first nexthop group
Ido Schimmel [Wed, 22 Sep 2021 07:36:41 +0000 (10:36 +0300)]
mlxsw: spectrum_router: Add trap adjacency entry upon first nexthop group

In commit 0c3cbbf96def ("mlxsw: Add specific trap for packets routed via
invalid nexthops"), mlxsw started allocating a new adjacency entry
during driver initialization, to trap packets routed via invalid
nexthops.

This behavior was later altered in commit 983db6198f0d ("mlxsw:
spectrum_router: Allocate discard adjacency entry when needed") to only
allocate the entry upon the first route that requires it. The motivation
for the change is explained in the commit message.

The problem with the current behavior is that the entry shows up as a
"leak" in a new BPF resource monitoring tool [1]. This is caused by the
asymmetry of the allocation/free scheme. While the entry is allocated
upon the first route that requires it, it is only freed during
de-initialization of the driver.

Instead, track the number of active nexthop groups and allocate the
adjacency entry upon the creation of the first group. Free it when the
number of active groups reaches zero.

The next patch will convert mlxsw to start using the new entry and
remove the old one.

[1] https://github.com/Mellanox/mlxsw/tree/master/Debugging/libbpf-tools/resmon

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: wwan: iosm: fw flashing and cd improvements
M Chetan Kumar [Tue, 21 Sep 2021 16:47:36 +0000 (22:17 +0530)]
net: wwan: iosm: fw flashing and cd improvements

1> Function comments moved to .c file.
2> Use literals in return to improve readability.
3> Do error handling check instead of success check.
4> Redundant ret assignment removed.

Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoskbuff: pass the result of data ksize to __build_skb_around
Li RongQing [Wed, 22 Sep 2021 06:17:19 +0000 (14:17 +0800)]
skbuff: pass the result of data ksize to __build_skb_around

Avoid to call ksize again in __build_skb_around by passing
the result of data ksize to __build_skb_around

nginx stress test shows this change can reduce ksize cpu usage,
and give a little performance boost

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodevlink: Make devlink_register to be void
Leon Romanovsky [Wed, 22 Sep 2021 08:58:03 +0000 (11:58 +0300)]
devlink: Make devlink_register to be void

devlink_register() can't fail and always returns success, but all drivers
are obligated to check returned status anyway. This adds a lot of boilerplate
code to handle impossible flow.

Make devlink_register() void and simplify the drivers that use that
API call.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Vladimir Oltean <olteanv@gmail.com> # dsa
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/ipv4/sysctl_net_ipv4.c: remove superfluous header files from sysctl_net_ipv4.c
Mianhan Liu [Tue, 21 Sep 2021 07:47:51 +0000 (15:47 +0800)]
net/ipv4/sysctl_net_ipv4.c: remove superfluous header files from sysctl_net_ipv4.c

sysctl_net_ipv4.c hasn't use any macro or function declared in igmp.h,
inetdevice.h, mm.h, module.h, nsproxy.h, swap.h, inet_frag.h, route.h
and snmp.h. Thus, these files can be removed from sysctl_net_ipv4.c
safely without affecting the compilation of the net module.

Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'iddq-sr-mode'
David S. Miller [Tue, 21 Sep 2021 09:58:36 +0000 (10:58 +0100)]
Merge branch 'iddq-sr-mode'

Florian Fainelli says:

====================
net: phy: broadcom: IDDQ-SR mode

This patch series adds support for the IDDQ with soft recovery mode
which allows power savings of roughly 150mW compared to a simple
BMCR.PDOWN power off (called standby power down in Broadcom datasheets).

In order to leverage these modes we add a new PHY driver flags for
drivers to opt-in for that behavior, the PHY driver is modified to do
the appropriate programming and the PHYs on which this was tested get
updated to have an appropriate suspend/resume set of functions.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: bcm_sf2: Request APD, DLL disable and IDDQ-SR
Florian Fainelli [Mon, 20 Sep 2021 21:54:18 +0000 (14:54 -0700)]
net: dsa: bcm_sf2: Request APD, DLL disable and IDDQ-SR

When interfacing with a Broadcom PHY, request the auto-power down, DLL
disable and IDDQ-SR modes to be enabled.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: bcmgenet: Request APD, DLL disable and IDDQ-SR
Florian Fainelli [Mon, 20 Sep 2021 21:54:17 +0000 (14:54 -0700)]
net: bcmgenet: Request APD, DLL disable and IDDQ-SR

When interfacing with a Broadcom PHY, request the auto-power down, DLL
disable and IDDQ-SR modes to be enabled.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: broadcom: Utilize appropriate suspend for BCM54810/11
Florian Fainelli [Mon, 20 Sep 2021 21:54:16 +0000 (14:54 -0700)]
net: phy: broadcom: Utilize appropriate suspend for BCM54810/11

Since we enable APD and DLL/RXC/TXC disable we need to use
bcm54xx_suspend() in order not to do a read/modify/write of the BMCR
register which is incompatible with the desired settings.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: broadcom: Wire suspend/resume for BCM50610 and BCM50610M
Florian Fainelli [Mon, 20 Sep 2021 21:54:15 +0000 (14:54 -0700)]
net: phy: broadcom: Wire suspend/resume for BCM50610 and BCM50610M

These two Ethernet PHYs support IDDQ-SR therefore wire-up the suspend
and resume callbacks to point to bcm54xx_suspend() and bcm54xx_resume().

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: broadcom: Add IDDQ-SR mode
Florian Fainelli [Mon, 20 Sep 2021 21:54:14 +0000 (14:54 -0700)]
net: phy: broadcom: Add IDDQ-SR mode

Add support for putting the PHY into IDDQ Soft Recovery mode by setting
the TOP_MISC register bits accordingly. This requires us to implement a
custom bcm54xx_suspend() routine which diverges from genphy_suspend() in
order to configure the PHY to enter IDDQ with software recovery as well
as avoid doing a read/modify/write on the BMCR register.

Doing a read/modify/write on the BMCR register means that the
auto-negotation bit may remain which interferes with the ability to put
the PHY into IDDQ-SR mode. We do software reset upon suspend in order to
put the PHY back into its state prior to suspend as recommended by the
datasheet.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/ipv4/syncookies.c: remove superfluous header files from syncookies.c
Mianhan Liu [Mon, 20 Sep 2021 14:15:49 +0000 (22:15 +0800)]
net/ipv4/syncookies.c: remove superfluous header files from syncookies.c

syncookies.c hasn't use any macro or function declared in slab.h and random.h,
Thus, these files can be removed from syncookies.c safely without
affecting the compilation of the net module.

Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/ipv4/udp_tunnel_core.c: remove superfluous header files from udp_tunnel_core.c
Mianhan Liu [Mon, 20 Sep 2021 12:29:57 +0000 (20:29 +0800)]
net/ipv4/udp_tunnel_core.c: remove superfluous header files from udp_tunnel_core.c

udp_tunnel_core.c hasn't use any macro or function declared in udp.h, types.h,
and net_namespace.h. Thus, these files can be removed from udp_tunnel_core.c
safely without affecting the compilation of the net module.

Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/ipv4/tcp_minisocks.c: remove superfluous header files from tcp_minisocks.c
Mianhan Liu [Mon, 20 Sep 2021 11:55:36 +0000 (19:55 +0800)]
net/ipv4/tcp_minisocks.c: remove superfluous header files from tcp_minisocks.c

tcp_minisocks.c hasn't use any macro or function declared in mm.h, module.h,
slab.h, sysctl.h, workqueue.h, static_key.h and inet_common.h. Thus, these
files can be removed from tcp_minisocks.c safely without affecting the
compilation of the net module.

Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/ipv4/tcp_fastopen.c: remove superfluous header files from tcp_fastopen.c
Mianhan Liu [Mon, 20 Sep 2021 11:34:16 +0000 (19:34 +0800)]
net/ipv4/tcp_fastopen.c: remove superfluous header files from tcp_fastopen.c

tcp_fastopen.c hasn't use any macro or function declared in crypto.h, err.h,
init.h, list.h, rculist.h and inetpeer.h. Thus, these files can be removed
from tcp_fastopen.c safely without affecting the compilation of the net module.

Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/ipv4/route.c: remove superfluous header files from route.c
Mianhan Liu [Mon, 20 Sep 2021 11:31:37 +0000 (19:31 +0800)]
net/ipv4/route.c: remove superfluous header files from route.c

route.c hasn't use any macro or function declared in uaccess.h, types.h,
string.h, sockios.h, times.h, protocol.h, arp.h and l3mdev.h. Thus, these
files can be removed from route.c safely without affecting the compilation
of the net module.

Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: lantiq: add support for jumbo frames
Aleksander Jan Bajkowski [Sun, 19 Sep 2021 18:24:28 +0000 (20:24 +0200)]
net: lantiq: add support for jumbo frames

Add support for jumbo frames. Full support for jumbo frames requires
changes in the DSA switch driver (lantiq_gswip.c).

Tested on BT Hone Hub 5A.

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'wwan-iosm-fw-flashing'
David S. Miller [Mon, 20 Sep 2021 09:04:01 +0000 (10:04 +0100)]
Merge branch 'wwan-iosm-fw-flashing'

M Chetan Kumar says:

====================
net: wwan: iosm: fw flashing & cd collection

This patch series brings-in support for M.2 7560 Device firmware flashing &
coredump collection using devlink.
- Driver Registers with Devlink framework.
- Register devlink params callback for configuring device params
  required in flashing or coredump flow.
- Implements devlink ops flash_update callback that programs modem
  firmware.
- Creates region & snapshot required for device coredump log collection.

On early detection of device in boot rom stage. Driver registers with
Devlink framework and establish transport channel for PSI (Primary Signed
Image) injection. Once PSI is injected to device, the device execution
stage details are read to determine whether device is in flash or
exception mode. The collected information is reported to devlink user
space application & based on this informationi, application proceeds with
either modem firmware flashing or coredump collection.

Refer to iosm devlink documentation for details on Devlink Params, flash
update and coredump collection command usage.

Note: Patches are interdependent. Need to apply complete patch series for
compilation.

Changes since v1:
  * Break down single patch into multiple patches.
  * IOSM Driver devlink documentation.
  * Fixes NULL parameter deference in ipc_devlink_flash_update() reported
    by smatch static checker.
  * Fixes memory leak in ipc_devlink_create_region().
  * Use kmemdup instead of kzalloc and memcpy in ipc_flash_boot_psi().
  * Fixes linux-net build error.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: wwan: iosm: fw flashing & cd collection infrastructure changes
M Chetan Kumar [Sun, 19 Sep 2021 17:28:35 +0000 (22:58 +0530)]
net: wwan: iosm: fw flashing & cd collection infrastructure changes

IOSM Makefile & WWAN Kconfig changes to support fw flashing & cd
collection module compliation.

Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: wwan: iosm: devlink fw flashing & cd collection documentation
M Chetan Kumar [Sun, 19 Sep 2021 17:28:18 +0000 (22:58 +0530)]
net: wwan: iosm: devlink fw flashing & cd collection documentation

Documents devlink params, fw update & cd collection commands
and its usage.

Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: wwan: iosm: transport layer support for fw flashing/cd
M Chetan Kumar [Sun, 19 Sep 2021 17:27:56 +0000 (22:57 +0530)]
net: wwan: iosm: transport layer support for fw flashing/cd

Implements transport layer protocol for fw flashing/coredump
collection.

Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: wwan: iosm: coredump collection support
M Chetan Kumar [Sun, 19 Sep 2021 17:27:27 +0000 (22:57 +0530)]
net: wwan: iosm: coredump collection support

Implements protocol for coredump collection.

Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: wwan: iosm: fw flashing support
M Chetan Kumar [Sun, 19 Sep 2021 17:27:05 +0000 (22:57 +0530)]
net: wwan: iosm: fw flashing support

Implements protocol for fw flashing and PSI injection for
coredump collection.

Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: wwan: iosm: devlink registration
M Chetan Kumar [Sun, 19 Sep 2021 17:26:18 +0000 (22:56 +0530)]
net: wwan: iosm: devlink registration

Register with devlink framework and implment callbacks required
for fw flashing and coredump collection.

Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: at803x: fix spacing and improve name for 83xx phy
Ansuel Smith [Sun, 19 Sep 2021 16:28:17 +0000 (18:28 +0200)]
net: phy: at803x: fix spacing and improve name for 83xx phy

Fix spacing and improve name for 83xx phy following other phy in the
same driver.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: at803x: add resume/suspend function to qca83xx phy
Ansuel Smith [Sun, 19 Sep 2021 16:28:16 +0000 (18:28 +0200)]
net: phy: at803x: add resume/suspend function to qca83xx phy

Add resume/suspend function to qca83xx internal phy.
We can't use the at803x generic function as the documentation lacks of
any support for WoL regs.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: at803x: add support for qca 8327 A variant internal phy
Ansuel Smith [Sun, 19 Sep 2021 16:28:15 +0000 (18:28 +0200)]
net: phy: at803x: add support for qca 8327 A variant internal phy

For qca8327 internal phy there are 2 different switch variant with 2
different phy id. Add this missing variant so the internal phy can be
correctly identified and fixed.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agovirtio_net: introduce TX timeout watchdog
Tony Lu [Fri, 17 Sep 2021 08:40:06 +0000 (16:40 +0800)]
virtio_net: introduce TX timeout watchdog

This implements ndo_tx_timeout handler and put this into stats. When
there is something wrong to send out packets, we could notice tx timeout
events and total timeout counter.

We have suffered send timeout issues due to the backends hung. With this,
we can find the details, and collect the counters by monitor systems.

Signed-off-by: Tony Lu <tony.ly@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: verify CQ context updates
Hariprasad Kelam [Fri, 17 Sep 2021 13:10:24 +0000 (18:40 +0530)]
octeontx2-af: verify CQ context updates

As per HW errata AQ modification to CQ could be discarded on heavy
traffic. This patch implements workaround for the same after each
CQ write by AQ check whether the requested fields (except those
which HW can update eg: avg_level) are properly updated or not.

If CQ context is not updated then perform AQ write again.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: sched: move and reuse mq_change_real_num_tx()
Jakub Kicinski [Fri, 17 Sep 2021 13:55:06 +0000 (06:55 -0700)]
net: sched: move and reuse mq_change_real_num_tx()

The code for handling active queue changes is identical
between mq and mqprio, reuse it.

Suggested-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phylink: don't call netif_carrier_off() with NULL netdev
Russell King (Oracle) [Fri, 17 Sep 2021 13:36:31 +0000 (14:36 +0100)]
net: phylink: don't call netif_carrier_off() with NULL netdev

Dan Carpenter points out that we have a code path that permits a NULL
netdev pointer to be passed to netif_carrier_off(), which will cause
a kernel oops. In any case, we need to set pl->old_link_state to false
to have the desired effect when there is no netdev present.

Fixes: f97493657c63 ("net: phylink: add suspend/resume support")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: rtnetlink: convert rcu_assign_pointer to RCU_INIT_POINTER
Yajun Deng [Sat, 18 Sep 2021 06:36:07 +0000 (14:36 +0800)]
net: rtnetlink: convert rcu_assign_pointer to RCU_INIT_POINTER

It no need barrier when assigning a NULL value to an RCU protected
pointer. So use RCU_INIT_POINTER() instead for more fast.

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agovirtio_net: use netdev_warn_once to output warn when without enough queues
Xuan Zhuo [Sat, 18 Sep 2021 06:06:15 +0000 (14:06 +0800)]
virtio_net: use netdev_warn_once to output warn when without enough queues

This warning is output when virtnet does not have enough queues, but it
only needs to be printed once to inform the user of this situation. It
is not necessary to print it every time. If the user loads xdp
frequently, this log appears too much.

Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoNET: IPV4: fix error "do not initialise globals to 0"
wangzhitong [Sat, 18 Sep 2021 09:39:10 +0000 (17:39 +0800)]
NET: IPV4: fix error "do not initialise globals to 0"

this patch fixes below Errors reported by checkpatch
    ERROR: do not initialise globals to 0
    +int cipso_v4_rbm_optfmt = 0;

Signed-off-by: wangzhitong <wangzhitong@uniontech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: net_namespace: Fix undefined member in key_remove_domain()
Yajun Deng [Sat, 18 Sep 2021 09:04:10 +0000 (17:04 +0800)]
net: net_namespace: Fix undefined member in key_remove_domain()

The key_domain member in struct net only exists if we define CONFIG_KEYS.
So we should add the define when we used key_domain.

Fixes: 9b242610514f ("keys: Network namespace domain tag")
Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dpaa2-mac: add support for more ethtool 10G link modes
Russell King [Fri, 17 Sep 2021 13:41:17 +0000 (14:41 +0100)]
net: dpaa2-mac: add support for more ethtool 10G link modes

Phylink documentation says:
  Note that the PHY may be able to transform from one connection
  technology to another, so, eg, don't clear 1000BaseX just
  because the MAC is unable to BaseX mode. This is more about
  clearing unsupported speeds and duplex settings. The port modes
  should not be cleared; phylink_set_port_modes() will help with this.

So add the missing 10G modes.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Marek Behún <kabel@kernel.org>
Acked-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'mptcp-next'
David S. Miller [Sat, 18 Sep 2021 13:20:01 +0000 (14:20 +0100)]
Merge branch 'mptcp-next'

Mat Martineau says:

====================
mptcp: Add SOL_MPTCP getsockopt support

Here's the first new MPTCP feature for the v5.16 cycle, and I'll defer
to Florian's helpful description of the series implementing some new
MPTCP socket options:

========

This adds the MPTCP_INFO, MPTCP_TCPINFO and MPTCP_SUBFLOW_ADDRS
mptcp getsockopt optnames.

MPTCP_INFO exposes the mptcp_info struct as an alternative to the
existing netlink diag interface.

MPTCP_TCPINFO exposes the tcp_info struct.
Unlike SOL_TCP/TCP_INFO, this returns one struct for each active
subflow.

MPTCP_SUBFLOW_ADDRS allows userspace to discover the ip addresses/ports
used by the local and remote endpoints, one for each active tcp subflow.

MPTCP_TCPINFO and MPTCP_SUBFLOW_ADDRS share the same meta-header that
needs to be pre-filled by userspace with the size of the data structures
it expects.  This is done to allow extension of the involved structs
later on, without breaking backwards compatibility.

The meta-structure can also be used to discover the required space
to obtain all information, as kernel will fill in the number of
active subflows even if there is not enough room for the requested info
itself.

More information is available in the individual patches.
Last patch adds test cases for the three optnames.

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

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoselftests: mptcp: add mptcp getsockopt test cases
Florian Westphal [Fri, 17 Sep 2021 23:33:22 +0000 (16:33 -0700)]
selftests: mptcp: add mptcp getsockopt test cases

Add a test program that retrieves the three info types:
1. mptcp meta information
2. tcp info for subflow
3. subflow endpoint addresses

For all three rudimentary checks are added.

1. Meta information checks that the logical mptcp
   sequence numbers advance as expected, based on the bytes read
   (init seq + bytes_received/sent) and the connection state
   (after close, we should exect 1 extra byte due to FIN).

2. TCP info checks the number of bytes sent/received vs.
   sums of read/write syscall return values.

3. Subflow endpoint addresses are checked vs. getsockname/getpeername
   result.

Tests for forward compatibility (0-initialisation of output-only
fields in mptcp_subflow_data structure) are added as well.

Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomptcp: add MPTCP_SUBFLOW_ADDRS getsockopt support
Florian Westphal [Fri, 17 Sep 2021 23:33:21 +0000 (16:33 -0700)]
mptcp: add MPTCP_SUBFLOW_ADDRS getsockopt support

This retrieves the address pairs of all subflows currently
active for a given mptcp connection.

It re-uses the same meta-header as for MPTCP_TCPINFO.

A new structure is provided to hold the subflow
address data:

struct mptcp_subflow_addrs {
union {
__kernel_sa_family_t sa_family;
struct sockaddr sa_local;
struct sockaddr_in sin_local;
struct sockaddr_in6 sin6_local;
struct sockaddr_storage ss_local;
};
union {
struct sockaddr sa_remote;
struct sockaddr_in sin_remote;
struct sockaddr_in6 sin6_remote;
struct sockaddr_storage ss_remote;
};
};

Usage of the new getsockopt is very similar to
MPTCP_TCPINFO one.

Userspace allocates a
'struct mptcp_subflow_data', followed by one or
more 'struct mptcp_subflow_addrs', then inits the
mptcp_subflow_data structure as follows:

struct mptcp_subflow_addrs *sf_addr;
struct mptcp_subflow_data *addr;
socklen_t olen = sizeof(*addr) + (8 * sizeof(*sf_addr));

addr = malloc(olen);
addr->size_subflow_data = sizeof(*addr);
addr->num_subflows = 0;
addr->size_kernel = 0;
addr->size_user = sizeof(struct mptcp_subflow_addrs);

sf_addr = (struct mptcp_subflow_addrs *)(addr + 1);

and then retrieves the endpoint addresses via:
ret = getsockopt(fd, SOL_MPTCP, MPTCP_SUBFLOW_ADDRS,
 addr, &olen);

If the call succeeds, kernel will have added up to 8
endpoint addresses after the 'mptcp_subflow_data' header.

Userspace needs to re-check 'olen' value to detect how
many bytes have been filled in by the kernel.

Userspace can check addr->num_subflows to discover when
there were more subflows that available data space.

Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomptcp: add MPTCP_TCPINFO getsockopt support
Florian Westphal [Fri, 17 Sep 2021 23:33:20 +0000 (16:33 -0700)]
mptcp: add MPTCP_TCPINFO getsockopt support

Allow users to retrieve TCP_INFO data of all subflows.

Users need to pre-initialize a meta header that has to be
prepended to the data buffer that will be filled with the tcp info data.

The meta header looks like this:

struct mptcp_subflow_data {
 __u32 size_subflow_data;/* size of this structure in userspace */
 __u32 num_subflows; /* must be 0, set by kernel */
 __u32 size_kernel; /* must be 0, set by kernel */
 __u32 size_user; /* size of one element in data[] */
} __attribute__((aligned(8)));

size_subflow_data has to be set to 'sizeof(struct mptcp_subflow_data)'.
This allows to extend mptcp_subflow_data structure later on without
breaking backwards compatibility.

If the structure is extended later on, kernel knows where the
userspace-provided meta header ends, even if userspace uses an older
(smaller) version of the structure.

num_subflows must be set to 0. If the getsockopt request succeeds (return
value is 0), it will be updated to contain the number of active subflows
for the given logical connection.

size_kernel must be set to 0. If the getsockopt request is successful,
it will contain the size of the 'struct tcp_info' as known by the kernel.
This is informational only.

size_user must be set to 'sizeof(struct tcp_info)'.

This allows the kernel to only fill in the space reserved/expected by
userspace.

Example:

struct my_tcp_info {
  struct mptcp_subflow_data d;
  struct tcp_info ti[2];
};
struct my_tcp_info ti;
socklen_t olen;

memset(&ti, 0, sizeof(ti));

ti.d.size_subflow_data = sizeof(struct mptcp_subflow_data);
ti.d.size_user = sizeof(struct tcp_info);
olen = sizeof(ti);

ret = getsockopt(fd, SOL_MPTCP, MPTCP_TCPINFO, &ti, &olen);
if (ret < 0)
die_perror("getsockopt MPTCP_TCPINFO");

mptcp_subflow_data.num_subflows is populated with the number of
subflows that exist on the kernel side for the logical mptcp connection.

This allows userspace to re-try with a larger tcp_info array if the number
of subflows was larger than the available space in the ti[] array.

olen has to be set to the number of bytes that userspace has allocated to
receive the kernel data.  It will be updated to contain the real number
bytes that have been copied to by the kernel.

In the above example, if the number if subflows was 1, olen is equal to
'sizeof(struct mptcp_subflow_data) + sizeof(struct tcp_info).
For 2 or more subflows olen is equal to 'sizeof(struct my_tcp_info)'.

If there was more data that could not be copied due to lack of space
in the option buffer, userspace can detect this by checking
mptcp_subflow_data->num_subflows.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomptcp: add MPTCP_INFO getsockopt
Florian Westphal [Fri, 17 Sep 2021 23:33:19 +0000 (16:33 -0700)]
mptcp: add MPTCP_INFO getsockopt

Its not compatible with multipath-tcp.org kernel one.

1. The out-of-tree implementation defines a different 'struct mptcp_info',
   with embedded __user addresses for additional data such as
   endpoint addresses.

2. Mat Martineau points out that embedded __user addresses doesn't work
with BPF_CGROUP_RUN_PROG_GETSOCKOPT() which assumes that copying in
optsize bytes from optval provides all data that got copied to userspace.

This provides mptcp_info data for the given mptcp socket.

Userspace sets optlen to the size of the structure it expects.
The kernel updates it to contain the number of bytes that it copied.

This allows to append more information to the structure later.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomptcp: add new mptcp_fill_diag helper
Florian Westphal [Fri, 17 Sep 2021 23:33:18 +0000 (16:33 -0700)]
mptcp: add new mptcp_fill_diag helper

Will be re-used from getsockopt path.
Since diag can be a module, we can't export the helper from diag, it
needs to be moved to core.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'macb-MII-on-RGMII'
David S. Miller [Sat, 18 Sep 2021 13:14:39 +0000 (14:14 +0100)]
Merge branch 'macb-MII-on-RGMII'

Claudiu Beznea says:

====================
net: macb: add support for MII on RGMII interface

This series adds support for MII mode on RGMII interface (patches 3/4,
4/4). Along with this the series also contains minor cleanups (patches 1/3,
2/3) on macb.h.

Changes in v2:
- added patch 4/4 to enable MII on RGMII support for SAMA7G5 MAC IPs
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: macb: enable mii on rgmii for sama7g5
Claudiu Beznea [Fri, 17 Sep 2021 13:26:15 +0000 (16:26 +0300)]
net: macb: enable mii on rgmii for sama7g5

Both MAC IPs available on SAMA7G5 support MII on RGMII feature.
Enable these by adding proper capability to proper macb_config
objects.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: macb: add support for mii on rgmii
Claudiu Beznea [Fri, 17 Sep 2021 13:26:14 +0000 (16:26 +0300)]
net: macb: add support for mii on rgmii

Cadence IP has option to enable MII support on RGMII interface. This
could be selected though bit 28 of network control register. This option
is not enabled on all the IP versions thus add a software capability to
be selected by the proper implementation of this IP.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: macb: align for OSSMODE offset
Claudiu Beznea [Fri, 17 Sep 2021 13:26:13 +0000 (16:26 +0300)]
net: macb: align for OSSMODE offset

Align for OSSMODE offset.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: macb: add description for SRTSM
Claudiu Beznea [Fri, 17 Sep 2021 13:26:12 +0000 (16:26 +0300)]
net: macb: add description for SRTSM

Add description for SRTSM bit.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: bcmgenet: Patch PHY interface for dedicated PHY driver
Florian Fainelli [Fri, 17 Sep 2021 21:55:38 +0000 (14:55 -0700)]
net: bcmgenet: Patch PHY interface for dedicated PHY driver

When we are using a dedicated PHY driver (not the Generic PHY driver)
chances are that it is going to configure RGMII delays and do that in a
way that is incompatible with our incorrect interpretation of the
phy_interface value.

Add a quirk in order to reverse the PHY_INTERFACE_MODE_RGMII to the
value of PHY_INTERFACE_MODE_RGMII_ID such that the MAC continues to be
configured the way it used to be, but the PHY driver can account for
adding delays. Conversely when PHY_INTERFACE_MODE_RGMII_TXID is
specified, return PHY_INTERFACE_MODE_RGMII_RXID to the PHY since we will
have enabled a TXC MAC delay (id_mode_dis=0, meaning there is a delay
inserted).

This is not considered a bug fix at this point since it only affects
Broadcom STB platforms shipping with a Device Tree blob that is not
updatable in the field (quite a few devices out there) and which was
generated using the scripted Device Tree environment shipped with those
platforms' SDK.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agosky2: Stop printing VPD info to debugfs
Heiner Kallweit [Thu, 16 Sep 2021 21:40:37 +0000 (23:40 +0200)]
sky2: Stop printing VPD info to debugfs

Sky2 is parsing the VPD and adds the parsed information to its debugfs
file. This isn't needed in kernel, userspace tools like lspci can be
used to display such information nicely. Therefore remove this from
the driver.

lspci -vv:

Capabilities: [50] Vital Product Data
Product Name: Marvell Yukon 88E8070 Gigabit Ethernet Controller
Read-only fields:
[PN] Part number: Yukon 88E8070
[EC] Engineering changes: Rev. 1.0
[MN] Manufacture ID: Marvell
[SN] Serial number: AbCdEfG970FD4
[CP] Extended capability: 01 10 cc 03
[RV] Reserved: checksum good, 9 byte(s) reserved
Read/write fields:
[RW] Read-write area: 1 byte(s) free
End

Relevant part in debugfs file:

0000:01:00.0 Product Data
Marvell Yukon 88E8070 Gigabit Ethernet Controller
 Part Number: Yukon 88E8070
 Engineering Level: Rev. 1.0
 Manufacturer: Marvell
 Serial Number: AbCdEfG970FD4

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Link: https://lore.kernel.org/r/bbaee8ab-9b2e-de04-ee7b-571e094cc5fe@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Jakub Kicinski [Fri, 17 Sep 2021 19:40:20 +0000 (12:40 -0700)]
Merge https://git./linux/kernel/git/bpf/bpf-next

Alexei Starovoitov says:

====================
pull-request: bpf-next 2021-09-17

We've added 63 non-merge commits during the last 12 day(s) which contain
a total of 65 files changed, 2653 insertions(+), 751 deletions(-).

The main changes are:

1) Streamline internal BPF program sections handling and
   bpf_program__set_attach_target() in libbpf, from Andrii.

2) Add support for new btf kind BTF_KIND_TAG, from Yonghong.

3) Introduce bpf_get_branch_snapshot() to capture LBR, from Song.

4) IMUL optimization for x86-64 JIT, from Jie.

5) xsk selftest improvements, from Magnus.

6) Introduce legacy kprobe events support in libbpf, from Rafael.

7) Access hw timestamp through BPF's __sk_buff, from Vadim.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (63 commits)
  selftests/bpf: Fix a few compiler warnings
  libbpf: Constify all high-level program attach APIs
  libbpf: Schedule open_opts.attach_prog_fd deprecation since v0.7
  selftests/bpf: Switch fexit_bpf2bpf selftest to set_attach_target() API
  libbpf: Allow skipping attach_func_name in bpf_program__set_attach_target()
  libbpf: Deprecated bpf_object_open_opts.relaxed_core_relocs
  selftests/bpf: Stop using relaxed_core_relocs which has no effect
  libbpf: Use pre-setup sec_def in libbpf_find_attach_btf_id()
  bpf: Update bpf_get_smp_processor_id() documentation
  libbpf: Add sphinx code documentation comments
  selftests/bpf: Skip btf_tag test if btf_tag attribute not supported
  docs/bpf: Add documentation for BTF_KIND_TAG
  selftests/bpf: Add a test with a bpf program with btf_tag attributes
  selftests/bpf: Test BTF_KIND_TAG for deduplication
  selftests/bpf: Add BTF_KIND_TAG unit tests
  selftests/bpf: Change NAME_NTH/IS_NAME_NTH for BTF_KIND_TAG format
  selftests/bpf: Test libbpf API function btf__add_tag()
  bpftool: Add support for BTF_KIND_TAG
  libbpf: Add support for BTF_KIND_TAG
  libbpf: Rename btf_{hash,equal}_int to btf_{hash,equal}_int_tag
  ...
====================

Link: https://lore.kernel.org/r/20210917173738.3397064-1-ast@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: phy: bcm7xxx: Add EPHY entry for 72165
Florian Fainelli [Fri, 17 Sep 2021 18:15:50 +0000 (11:15 -0700)]
net: phy: bcm7xxx: Add EPHY entry for 72165

72165 is a 16nm process SoC with a 10/100 integrated Ethernet PHY,
create a new macro and set of functions for this different process type.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20210917181551.2836036-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoptp: ocp: Avoid operator precedence warning in ptp_ocp_summary_show()
Nathan Chancellor [Fri, 17 Sep 2021 04:52:05 +0000 (21:52 -0700)]
ptp: ocp: Avoid operator precedence warning in ptp_ocp_summary_show()

Clang warns twice:

drivers/ptp/ptp_ocp.c:2065:16: error: operator '?:' has lower precedence
than '&'; '&' will be evaluated first
[-Werror,-Wbitwise-conditional-parentheses]
                           on & map ? " ON" : "OFF", src);
                           ~~~~~~~~ ^
drivers/ptp/ptp_ocp.c:2065:16: note: place parentheses around the '&'
expression to silence this warning
                           on & map ? " ON" : "OFF", src);
                                    ^
                           (       )
drivers/ptp/ptp_ocp.c:2065:16: note: place parentheses around the '?:'
expression to evaluate it first
                           on & map ? " ON" : "OFF", src);
                                    ^

on and map are both booleans so this should be a logical AND, which
clears up the operator precedence issue.

Fixes: a62a56d04e63 ("ptp: ocp: Enable 4th timestamper / PPS generator")
Link: https://github.com/ClangBuiltLinux/linux/issues/1457
Suggested-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Link: https://lore.kernel.org/r/20210917045204.1385801-1-nathan@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoselftests/bpf: Fix a few compiler warnings
Yonghong Song [Fri, 17 Sep 2021 04:33:43 +0000 (21:33 -0700)]
selftests/bpf: Fix a few compiler warnings

With clang building selftests/bpf, I hit a few warnings like below:

  .../bpf_iter.c:592:48: warning: variable 'expected_key_c' set but not used [-Wunused-but-set-variable]
  __u32 expected_key_a = 0, expected_key_b = 0, expected_key_c = 0;
                                                ^

  .../bpf_iter.c:688:48: warning: variable 'expected_key_c' set but not used [-Wunused-but-set-variable]
  __u32 expected_key_a = 0, expected_key_b = 0, expected_key_c = 0;
                                                ^

  .../tc_redirect.c:657:6: warning: variable 'target_fd' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
  if (!ASSERT_OK_PTR(nstoken, "setns " NS_FWD))
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  .../tc_redirect.c:743:6: note: uninitialized use occurs here
  if (target_fd >= 0)
      ^~~~~~~~~

Removing unused variables and initializing the previously-uninitialized variable
to ensure these warnings are gone.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210917043343.3711917-1-yhs@fb.com
3 years agoMerge branch 'Improve set_attach_target() and deprecate open_opts.attach_prog_fd'
Alexei Starovoitov [Fri, 17 Sep 2021 16:04:13 +0000 (09:04 -0700)]
Merge branch 'Improve set_attach_target() and deprecate open_opts.attach_prog_fd'

Andrii Nakryiko says:

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

This patch set deprecates bpf_object_open_opts.attach_prog_fd (in libbpf 0.7+)
by extending bpf_program__set_attach_target() to support some more flexible
scenarios. Existing fexit_bpf2bpf selftest is updated accordingly to not use
deprecated APIs.

While at it, also deprecate no-op relaxed_core_relocs option (they are always
"relaxed").

Last patch also const-ifies all high-level libbpf attach APIs, as there is no
reason for them to assume bpf_program/bpf_map modifications.

Patch #1 also removes one more unneeded use of find_sec_def(), relying on
prog->sec_def that's set during bpf_object__open() operation, simplifying
upcoming refactoring a little bit more.

All these changes are preparatory patches before SEC() handling refactoring
that will come next.
====================

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
3 years agolibbpf: Constify all high-level program attach APIs
Andrii Nakryiko [Thu, 16 Sep 2021 01:58:36 +0000 (18:58 -0700)]
libbpf: Constify all high-level program attach APIs

Attach APIs shouldn't need to modify bpf_program/bpf_map structs, so
change all struct bpf_program and struct bpf_map pointers to const
pointers. This is completely backwards compatible with no functional
change.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210916015836.1248906-8-andrii@kernel.org
3 years agolibbpf: Schedule open_opts.attach_prog_fd deprecation since v0.7
Andrii Nakryiko [Thu, 16 Sep 2021 01:58:35 +0000 (18:58 -0700)]
libbpf: Schedule open_opts.attach_prog_fd deprecation since v0.7

bpf_object_open_opts.attach_prog_fd makes a pretty strong assumption
that bpf_object contains either only single freplace BPF program or all
of BPF programs in BPF object are freplaces intended to replace
different subprograms of the same target BPF program. This seems both
a bit confusing, too assuming, and limiting.

We've had bpf_program__set_attach_target() API which allows more
fine-grained control over this, on a per-program level. As such, mark
open_opts.attach_prog_fd as deprecated starting from v0.7, so that we
have one more universal way of setting freplace targets. With previous
change to allow NULL attach_func_name argument, and especially combined
with BPF skeleton, arguable bpf_program__set_attach_target() is a more
convenient and explicit API as well.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210916015836.1248906-7-andrii@kernel.org
3 years agoselftests/bpf: Switch fexit_bpf2bpf selftest to set_attach_target() API
Andrii Nakryiko [Thu, 16 Sep 2021 01:58:34 +0000 (18:58 -0700)]
selftests/bpf: Switch fexit_bpf2bpf selftest to set_attach_target() API

Switch fexit_bpf2bpf selftest to bpf_program__set_attach_target()
instead of using bpf_object_open_opts.attach_prog_fd, which is going to
be deprecated. These changes also demonstrate the new mode of
set_attach_target() in which it allows NULL when the target is BPF
program (attach_prog_fd != 0).

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210916015836.1248906-6-andrii@kernel.org
3 years agolibbpf: Allow skipping attach_func_name in bpf_program__set_attach_target()
Andrii Nakryiko [Thu, 16 Sep 2021 01:58:33 +0000 (18:58 -0700)]
libbpf: Allow skipping attach_func_name in bpf_program__set_attach_target()

Allow to use bpf_program__set_attach_target to only set target attach
program FD, while letting libbpf to use target attach function name from
SEC() definition. This might be useful for some scenarios where
bpf_object contains multiple related freplace BPF programs intended to
replace different sub-programs in target BPF program. In such case all
programs will have the same attach_prog_fd, but different
attach_func_name. It's convenient to specify such target function names
declaratively in SEC() definitions, but attach_prog_fd is a dynamic
runtime setting.

To simplify such scenario, allow bpf_program__set_attach_target() to
delay BTF ID resolution till the BPF program load time by providing NULL
attach_func_name. In that case the behavior will be similar to using
bpf_object_open_opts.attach_prog_fd (which is marked deprecated since
v0.7), but has the benefit of allowing more control by user in what is
attached to what. Such setup allows having BPF programs attached to
different target attach_prog_fd with target functions still declaratively
recorded in BPF source code in SEC() definitions.

Selftests changes in the next patch should make this more obvious.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210916015836.1248906-5-andrii@kernel.org
3 years agolibbpf: Deprecated bpf_object_open_opts.relaxed_core_relocs
Andrii Nakryiko [Thu, 16 Sep 2021 01:58:32 +0000 (18:58 -0700)]
libbpf: Deprecated bpf_object_open_opts.relaxed_core_relocs

It's relevant and hasn't been doing anything for a long while now.
Deprecated it.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210916015836.1248906-4-andrii@kernel.org
3 years agoselftests/bpf: Stop using relaxed_core_relocs which has no effect
Andrii Nakryiko [Thu, 16 Sep 2021 01:58:31 +0000 (18:58 -0700)]
selftests/bpf: Stop using relaxed_core_relocs which has no effect

relaxed_core_relocs option hasn't had any effect for a while now, stop
specifying it. Next patch marks it as deprecated.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210916015836.1248906-3-andrii@kernel.org
3 years agolibbpf: Use pre-setup sec_def in libbpf_find_attach_btf_id()
Andrii Nakryiko [Thu, 16 Sep 2021 01:58:30 +0000 (18:58 -0700)]
libbpf: Use pre-setup sec_def in libbpf_find_attach_btf_id()

Don't perform another search for sec_def inside
libbpf_find_attach_btf_id(), as each recognized bpf_program already has
prog->sec_def set.

Also remove unnecessary NULL check for prog->sec_name, as it can never
be NULL.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210916015836.1248906-2-andrii@kernel.org
3 years agonet: microchip: encx24j600: drop unneeded MODULE_ALIAS
Krzysztof Kozlowski [Thu, 16 Sep 2021 17:05:08 +0000 (19:05 +0200)]
net: microchip: encx24j600: drop unneeded MODULE_ALIAS

The MODULE_DEVICE_TABLE already creates proper alias for spi driver.
Having another MODULE_ALIAS causes the alias to be duplicated.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodevlink: Delete not-used devlink APIs
Leon Romanovsky [Thu, 16 Sep 2021 10:38:33 +0000 (13:38 +0300)]
devlink: Delete not-used devlink APIs

Devlink core exported generously the functions calls that were used
by netdevsim tests or not used at all.

Delete such APIs with one exception - devlink_alloc_ns(). That function
should be spared from deleting because it is a special form of devlink_alloc()
needed for the netdevsim.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: stmmac: dwmac-visconti: Make use of the helper function dev_err_probe()
Cai Huoqing [Thu, 16 Sep 2021 07:37:36 +0000 (15:37 +0800)]
net: stmmac: dwmac-visconti: Make use of the helper function dev_err_probe()

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
And using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Acked-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: Remove redundant initialization of variable blkaddr
Colin Ian King [Fri, 17 Sep 2021 12:03:33 +0000 (13:03 +0100)]
octeontx2-af: Remove redundant initialization of variable blkaddr

The variable blkaddr is being initialized with a value that is never
read, it is being updated later on in a for-loop. 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: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: Fix uninitialized variable val
Colin Ian King [Fri, 17 Sep 2021 11:57:47 +0000 (12:57 +0100)]
octeontx2-af: Fix uninitialized variable val

In the case where the condition !is_rvu_otx2(rvu) is false variable
val is not initialized and can contain a garbage value. Fix this by
initializing val to zero and bit-wise or'ing in BIT_ULL(51) to val
for the true condition case of !is_rvu_otx2(rvu).

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: 4b5a3ab17c6c ("octeontx2-af: Hardware configuration for inline IPsec")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: e1000e: solve insmod 'Unknown symbol mutex_lock' error
Hao Chen [Fri, 17 Sep 2021 14:16:54 +0000 (14:16 +0000)]
net: e1000e: solve insmod 'Unknown symbol mutex_lock' error

After I turn on the CONFIG_LOCK_STAT=y, insmod e1000e.ko will report:
[    5.641579] e1000e: Unknown symbol mutex_lock (err -2)
[   90.775705] e1000e: Unknown symbol mutex_lock (err -2)
[  132.252339] e1000e: Unknown symbol mutex_lock (err -2)

This problem fixed after include <linux/mutex.h>.

Signed-off-by: Hao Chen <chenhaoa@uniontech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: netsec: Make use of the helper function dev_err_probe()
Cai Huoqing [Thu, 16 Sep 2021 07:37:29 +0000 (15:37 +0800)]
net: netsec: Make use of the helper function dev_err_probe()

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
And using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: broadcom: Enable 10BaseT DAC early wake
Florian Fainelli [Thu, 16 Sep 2021 21:27:41 +0000 (14:27 -0700)]
net: phy: broadcom: Enable 10BaseT DAC early wake

Enable the DAC early wake when then link operates at 10BaseT allows
power savings in the hundreds of milli Watts by shutting down the
transmitter. A number of errata have been issued for various Gigabit
PHYs and the recommendation is to enable both the early and forced DAC
wake to be on the safe side. This needs to be done dynamically based
upon the link state, which is why a link_change_notify callback is
utilized.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20210916212742.1653088-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge branch 'net-dsa-b53-clean-up-cpu-imp-ports'
Jakub Kicinski [Fri, 17 Sep 2021 02:09:54 +0000 (19:09 -0700)]
Merge branch 'net-dsa-b53-clean-up-cpu-imp-ports'

Rafał Miłecki says:

====================
net: dsa: b53: Clean up CPU/IMP ports

This has been tested on:

1. Luxul XBR-4500 with used CPU port 5
[    8.361438] b53-srab-switch 18007000.ethernet-switch: found switch: BCM53012, rev 0

2. Netgear R8000 with used CPU port 8
[    4.453858] b53-srab-switch 18007000.ethernet-switch: found switch: BCM53012, rev 5

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

Link: https://lore.kernel.org/r/20210916120354.20338-1-zajec5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dsa: b53: Drop unused "cpu_port" field
Rafał Miłecki [Thu, 16 Sep 2021 12:03:54 +0000 (14:03 +0200)]
net: dsa: b53: Drop unused "cpu_port" field

It's set but never used anymore.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dsa: b53: Improve flow control setup on BCM5301x
Rafał Miłecki [Thu, 16 Sep 2021 12:03:53 +0000 (14:03 +0200)]
net: dsa: b53: Improve flow control setup on BCM5301x

According to the Broadcom's reference driver flow control needs to be
enabled for any CPU switch port (5, 7 or 8 - depending on which one is
used). Current code makes it work only for the port 5. Use
dsa_is_cpu_port() which solved that problem.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dsa: b53: Drop BCM5301x workaround for a wrong CPU/IMP port
Rafał Miłecki [Thu, 16 Sep 2021 12:03:52 +0000 (14:03 +0200)]
net: dsa: b53: Drop BCM5301x workaround for a wrong CPU/IMP port

On BCM5301x port 8 requires a fixed link when used.

Years ago when b53 was an OpenWrt downstream driver (with configuration
based on sometimes bugged NVRAM) there was a need for a fixup. In case
of forcing fixed link for (incorrectly specified) port 5 the code had to
actually setup port 8 link.

For upstream b53 driver with setup based on DT there is no need for that
workaround. In DT we have and require correct ports setup.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dsa: b53: Include all ports in "enabled_ports"
Rafał Miłecki [Thu, 16 Sep 2021 12:03:51 +0000 (14:03 +0200)]
net: dsa: b53: Include all ports in "enabled_ports"

Make "enabled_ports" bitfield contain all available switch ports
including a CPU port. This way there is no need for fixup during
initialization.

For BCM53010, BCM53018 and BCM53019 include also other available ports.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Jakub Kicinski [Thu, 16 Sep 2021 20:58:38 +0000 (13:58 -0700)]
Merge git://git./linux/kernel/git/netdev/net

No conflicts!

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge tag 'net-5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 16 Sep 2021 20:05:42 +0000 (13:05 -0700)]
Merge tag 'net-5.15-rc2' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bpf.

  Current release - regressions:

   - vhost_net: fix OoB on sendmsg() failure

   - mlx5: bridge, fix uninitialized variable usage

   - bnxt_en: fix error recovery regression

  Current release - new code bugs:

   - bpf, mm: fix lockdep warning triggered by stack_map_get_build_id_offset()

  Previous releases - regressions:

   - r6040: restore MDIO clock frequency after MAC reset

   - tcp: fix tp->undo_retrans accounting in tcp_sacktag_one()

   - dsa: flush switchdev workqueue before tearing down CPU/DSA ports

  Previous releases - always broken:

   - ptp: dp83640: don't define PAGE0, avoid compiler warning

   - igc: fix tunnel segmentation offloads

   - phylink: update SFP selected interface on advertising changes

   - stmmac: fix system hang caused by eee_ctrl_timer during suspend/resume

   - mlx5e: fix mutual exclusion between CQE compression and HW TS

  Misc:

   - bpf, cgroups: fix cgroup v2 fallback on v1/v2 mixed mode

   - sfc: fallback for lack of xdp tx queues

   - hns3: add option to turn off page pool feature"

* tag 'net-5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (67 commits)
  mlxbf_gige: clear valid_polarity upon open
  igc: fix tunnel offloading
  net/{mlx5|nfp|bnxt}: Remove unnecessary RTNL lock assert
  net: wan: wanxl: define CROSS_COMPILE_M68K
  selftests: nci: replace unsigned int with int
  net: dsa: flush switchdev workqueue before tearing down CPU/DSA ports
  Revert "net: phy: Uniform PHY driver access"
  net: dsa: destroy the phylink instance on any error in dsa_slave_phy_setup
  ptp: dp83640: don't define PAGE0
  bnx2x: Fix enabling network interfaces without VFs
  Revert "Revert "ipv4: fix memory leaks in ip_cmsg_send() callers""
  tcp: fix tp->undo_retrans accounting in tcp_sacktag_one()
  net-caif: avoid user-triggerable WARN_ON(1)
  bpf, selftests: Add test case for mixed cgroup v1/v2
  bpf, selftests: Add cgroup v1 net_cls classid helpers
  bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode
  bpf: Add oversize check before call kvcalloc()
  net: hns3: fix the timing issue of VF clearing interrupt sources
  net: hns3: fix the exception when query imp info
  net: hns3: disable mac in flr process
  ...

3 years agonet: 6pack: Fix tx timeout and slot time
Guenter Roeck [Thu, 9 Sep 2021 03:57:43 +0000 (20:57 -0700)]
net: 6pack: Fix tx timeout and slot time

tx timeout and slot time are currently specified in units of HZ.  On
Alpha, HZ is defined as 1024.  When building alpha:allmodconfig, this
results in the following error message.

  drivers/net/hamradio/6pack.c: In function 'sixpack_open':
  drivers/net/hamradio/6pack.c:71:41: error:
   unsigned conversion from 'int' to 'unsigned char'
   changes value from '256' to '0'

In the 6PACK protocol, tx timeout is specified in units of 10 ms and
transmitted over the wire:

    https://www.linux-ax25.org/wiki/6PACK

Defining a value dependent on HZ doesn't really make sense, and
presumably comes from the (very historical) situation where HZ was
originally 100.

Note that the SIXP_SLOTTIME use explicitly is about 10ms granularity:

        mod_timer(&sp->tx_t, jiffies + ((when + 1) * HZ) / 100);

and the SIXP_TXDELAY walue is sent as a byte over the wire.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agodrm/rockchip: cdn-dp-core: Make cdn_dp_core_resume __maybe_unused
Arnd Bergmann [Tue, 28 Apr 2020 21:31:24 +0000 (23:31 +0200)]
drm/rockchip: cdn-dp-core: Make cdn_dp_core_resume __maybe_unused

With the new static annotation, the compiler warns when the functions
are actually unused:

   drivers/gpu/drm/rockchip/cdn-dp-core.c:1123:12: error: 'cdn_dp_resume' defined but not used [-Werror=unused-function]
    1123 | static int cdn_dp_resume(struct device *dev)
         |            ^~~~~~~~~~~~~

Mark them __maybe_unused to suppress that warning as well.

[ Not so 'new' static annotations any more, and I removed the part of
  the patch that added __maybe_unused to cdn_dp_suspend(), because it's
  used by the shutdown/remove code.

  So only the resume function ends up possibly unused if CONFIG_PM isn't
  set     - Linus ]

Fixes: 7c49abb4c2f8 ("drm/rockchip: cdn-dp-core: Make cdn_dp_core_suspend/resume static")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agocpufreq: vexpress: Drop unused variable
Guenter Roeck [Thu, 9 Sep 2021 18:47:14 +0000 (11:47 -0700)]
cpufreq: vexpress: Drop unused variable

arm:allmodconfig fails to build with the following error.

  drivers/cpufreq/vexpress-spc-cpufreq.c:454:13: error:
unused variable 'cur_cluster'

Remove the unused variable.

Fixes: bb8c26d9387f ("cpufreq: vexpress: Set CPUFREQ_IS_COOLING_DEV flag")
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoalpha: Declare virt_to_phys and virt_to_bus parameter as pointer to volatile
Guenter Roeck [Thu, 9 Sep 2021 05:00:33 +0000 (22:00 -0700)]
alpha: Declare virt_to_phys and virt_to_bus parameter as pointer to volatile

Some drivers pass a pointer to volatile data to virt_to_bus() and
virt_to_phys(), and that works fine.  One exception is alpha.  This
results in a number of compile errors such as

  drivers/net/wan/lmc/lmc_main.c: In function 'lmc_softreset':
  drivers/net/wan/lmc/lmc_main.c:1782:50: error:
passing argument 1 of 'virt_to_bus' discards 'volatile'
qualifier from pointer target type

  drivers/atm/ambassador.c: In function 'do_loader_command':
  drivers/atm/ambassador.c:1747:58: error:
passing argument 1 of 'virt_to_bus' discards 'volatile'
qualifier from pointer target type

Declare the parameter of virt_to_phys and virt_to_bus as pointer to
volatile to fix the problem.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years ago3com 3c515: make it compile on 64-bit architectures
Linus Torvalds [Thu, 16 Sep 2021 18:14:47 +0000 (11:14 -0700)]
3com 3c515: make it compile on 64-bit architectures

This driver isn't enabled most places because of the ISA config
dependency, but alpha still has it.  And I think the 'Jensen' actually
did have an ISA slot.

However, it doesn't build cleanly, because the "Vortex bus master" code
just casts the skb->data pointer to 'int':

        outl((int) (skb->data), ioaddr + Wn7_MasterAddr);

which is all kinds of broken.  Even on a good old traditional PC/AT it
would be broken because the high bits will be random kernel address
bits, but presumably the hardware ignores those bits.  I mean, it's ISA.
We're talking 16MB dma limits. The "good old days".

Make the build happy with this kind of craziness by using the proper
isa_virt_to_bus() handling that the full bus master code uses anyway
(the Vortex bus mastering is a limited special case).

Who knows, this might even work.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'for-5.15/parisc-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
Linus Torvalds [Thu, 16 Sep 2021 17:32:00 +0000 (10:32 -0700)]
Merge tag 'for-5.15/parisc-4' of git://git./linux/kernel/git/deller/parisc-linux

Pull parisc fix from Helge Deller:
 "Fix a build warning when using the PAGE0 pointer"

* tag 'for-5.15/parisc-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Use absolute_pointer() to define PAGE0

3 years agoMerge tag 'm68k-for-v5.15-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 16 Sep 2021 17:26:48 +0000 (10:26 -0700)]
Merge tag 'm68k-for-v5.15-tag2' of git://git./linux/kernel/git/geert/linux-m68k

Pull m68k fixes from Geert Uytterhoeven:

 - Warning fixes to mitigate CONFIG_WERROR=y

* tag 'm68k-for-v5.15-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: mvme: Remove overdue #warnings in RTC handling
  m68k: Double cast io functions to unsigned long

3 years agoocteontx2-af: Hardware configuration for inline IPsec
Srujana Challa [Thu, 16 Sep 2021 09:41:14 +0000 (15:11 +0530)]
octeontx2-af: Hardware configuration for inline IPsec

On OcteonTX2/CN10K SoC, the admin function (AF) is the only one
with all priviliges to configure HW and alloc resources, PFs and
it's VFs have to request AF via mailbox for all their needs.
This patch adds new mailbox messages for CPT PFs and VFs to configure
HW resources for inline-IPsec.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Vidya Sagar Velumuri <vvelumuri@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/tls: support SM4 GCM/CCM algorithm
Tianjia Zhang [Thu, 16 Sep 2021 03:37:38 +0000 (11:37 +0800)]
net/tls: support SM4 GCM/CCM algorithm

The RFC8998 specification defines the use of the ShangMi algorithm
cipher suites in TLS 1.3, and also supports the GCM/CCM mode using
the SM4 algorithm.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoRevert "net: wwan: iosm: firmware flashing and coredump collection"
Jakub Kicinski [Wed, 15 Sep 2021 21:58:23 +0000 (14:58 -0700)]
Revert "net: wwan: iosm: firmware flashing and coredump collection"

The devlink parameters are not the right mechanism to pass
extra parameters to device flashing. The params added are
also undocumented.

This reverts commit 13bb8429ca98 ("net: wwan: iosm: firmware
flashing and coredump collection").

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomlxbf_gige: clear valid_polarity upon open
David Thompson [Wed, 15 Sep 2021 18:08:48 +0000 (14:08 -0400)]
mlxbf_gige: clear valid_polarity upon open

The network interface managed by the mlxbf_gige driver can
get into a problem state where traffic does not flow.
In this state, the interface will be up and enabled, but
will stop processing received packets.  This problem state
will happen if three specific conditions occur:
    1) driver has received more than (N * RxRingSize) packets but
       less than (N+1 * RxRingSize) packets, where N is an odd number
       Note: the command "ethtool -g <interface>" will display the
       current receive ring size, which currently defaults to 128
    2) the driver's interface was disabled via "ifconfig oob_net0 down"
       during the window described in #1.
    3) the driver's interface is re-enabled via "ifconfig oob_net0 up"

This patch ensures that the driver's "valid_polarity" field is
cleared during the open() method so that it always matches the
receive polarity used by hardware.  Without this fix, the driver
needs to be unloaded and reloaded to correct this problem state.

Fixes: f92e1869d74e ("Add Mellanox BlueField Gigabit Ethernet driver")
Reviewed-by: Asmaa Mnebhi <asmaa@nvidia.com>
Signed-off-by: David Thompson <davthompson@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-pf: CN10K: Hide RPM stats over ethtool
Hariprasad Kelam [Wed, 15 Sep 2021 15:59:46 +0000 (21:29 +0530)]
octeontx2-pf: CN10K: Hide RPM stats over ethtool

CN10K MAC block (RPM) differs in number of stats compared to Octeontx2
MAC block (CGX). RPM supports stats for each class of PFC and error
packets etc. It would be difficult for user to read stats from ethtool
and map to their definition.

New debugfs file is already added to read RPM stats along with their
definition. This patch adds proper checks such that RPM stats will not
be part of ethtool.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoigc: fix tunnel offloading
Paolo Abeni [Wed, 15 Sep 2021 17:19:07 +0000 (10:19 -0700)]
igc: fix tunnel offloading

Checking tunnel offloading, it turns out that offloading doesn't work
as expected.  The following script allows to reproduce the issue.
Call it as `testscript DEVICE LOCALIP REMOTEIP NETMASK'

=== SNIP ===
if [ $# -ne 4 ]
then
  echo "Usage $0 DEVICE LOCALIP REMOTEIP NETMASK"
  exit 1
fi
DEVICE="$1"
LOCAL_ADDRESS="$2"
REMOTE_ADDRESS="$3"
NWMASK="$4"
echo "Driver: $(ethtool -i ${DEVICE} | awk '/^driver:/{print $2}') "
ethtool -k "${DEVICE}" | grep tx-udp
echo
echo "Set up NIC and tunnel..."
ip addr add "${LOCAL_ADDRESS}/${NWMASK}" dev "${DEVICE}"
ip link set "${DEVICE}" up
sleep 2
ip link add vxlan1 type vxlan id 42 \
   remote "${REMOTE_ADDRESS}" \
   local "${LOCAL_ADDRESS}" \
   dstport 0 \
   dev "${DEVICE}"
ip addr add fc00::1/64 dev vxlan1
ip link set vxlan1 up
sleep 2
rm -f vxlan.pcap
echo "Running tcpdump and iperf3..."
( nohup tcpdump -i any -w vxlan.pcap >/dev/null 2>&1 ) &
sleep 2
iperf3 -c fc00::2 >/dev/null
pkill tcpdump
echo
echo -n "Max. Paket Size: "
tcpdump -r vxlan.pcap -nnle 2>/dev/null \
| grep "${LOCAL_ADDRESS}.*> ${REMOTE_ADDRESS}.*OTV" \
| awk '{print $8}' | awk -F ':' '{print $1}' \
| sort -n | tail -1
echo
ip link del vxlan1
ip addr del ${LOCAL_ADDRESS}/${NWMASK} dev "${DEVICE}"
=== SNAP ===

The expected outcome is

  Max. Paket Size: 64904

This is what you see on igb, the code igc has been taken from.
However, on igc the output is

  Max. Paket Size: 1516

so the GSO aggregate packets are segmented by the kernel before calling
igc_xmit_frame.  Inside the subsequent call to igc_tso, the check for
skb_is_gso(skb) fails and the function returns prematurely.

It turns out that this occurs because the feature flags aren't set
entirely correctly in igc_probe.  In contrast to the original code
from igb_probe, igc_probe neglects to set the flags required to allow
tunnel offloading.

Setting the same flags as igb fixes the issue on igc.

Fixes: 34428dff3679 ("igc: Add GSO partial support")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Tested-by: Corinna Vinschen <vinschen@redhat.com>
Acked-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Nechama Kraus <nechamax.kraus@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/{mlx5|nfp|bnxt}: Remove unnecessary RTNL lock assert
Eli Cohen [Wed, 15 Sep 2021 04:47:27 +0000 (07:47 +0300)]
net/{mlx5|nfp|bnxt}: Remove unnecessary RTNL lock assert

Remove the assert from the callback priv lookup function since it does
not require RTNL lock and is already protected by flow_indr_block_lock.

This will avoid warnings from being emitted to dmesg if the driver
registers its callback after an ingress qdisc was created for a
netdevice.

The warnings started after the following patch was merged:
commit 74fc4f828769 ("net: Fix offloading indirect devices dependency on qdisc order creation")

Signed-off-by: Eli Cohen <elic@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: wan: wanxl: define CROSS_COMPILE_M68K
Adam Borowski [Sun, 12 Sep 2021 21:23:21 +0000 (23:23 +0200)]
net: wan: wanxl: define CROSS_COMPILE_M68K

It was used but never set.  The hardcoded value from before the dawn of
time was non-standard; the usual name for cross-tools is $TRIPLET-$TOOL

Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoselftests: nci: replace unsigned int with int
Xiang wangx [Thu, 16 Sep 2021 12:24:42 +0000 (20:24 +0800)]
selftests: nci: replace unsigned int with int

Should not use comparison of unsigned expressions < 0.

Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: thunderx: Make use of the helper function dev_err_probe()
Cai Huoqing [Wed, 15 Sep 2021 14:58:42 +0000 (22:58 +0800)]
net: thunderx: Make use of the helper function dev_err_probe()

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
And using dev_err_probe() can reduce code size, and simplify the code.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>