platform/kernel/linux-starfive.git
15 months agoselftests/net: replace manual array size calc with ARRAYSIZE macro.
Mahmoud Maatuq [Sun, 16 Jul 2023 18:43:49 +0000 (22:43 +0400)]
selftests/net: replace manual array size calc with ARRAYSIZE macro.

fixes coccinelle WARNING: Use ARRAY_SIZE

Signed-off-by: Mahmoud Maatuq <mahmoudmatook.mm@gmail.com>
Link: https://lore.kernel.org/r/20230716184349.2124858-1-mahmoudmatook.mm@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agortnetlink: Move nesting cancellation rollback to proper function
Gal Pressman [Sun, 16 Jul 2023 07:24:40 +0000 (10:24 +0300)]
rtnetlink: Move nesting cancellation rollback to proper function

Make rtnl_fill_vf() cancel the vfinfo attribute on error instead of the
inner rtnl_fill_vfinfo(), as it is the function that starts it.

Signed-off-by: Gal Pressman <gal@nvidia.com>
Link: https://lore.kernel.org/r/20230716072440.2372567-1-gal@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agoigc: Add TransmissionOverrun counter
Muhammad Husaini Zulkifli [Fri, 14 Jul 2023 20:14:28 +0000 (13:14 -0700)]
igc: Add TransmissionOverrun counter

Add TransmissionOverrun as per defined by IEEE 802.1Q Bridges.
TransmissionOverrun counter shall be incremented if the implementation
detects that a frame from a given queue is still being transmitted by
the MAC when that gate-close event for that queue occurs.

This counter is utilised by the Certification conformance test to
inform the user application whether any packets are currently being
transmitted on a particular queue during a gate-close event.

Intel Discrete I225/I226 have a mechanism to not transmit a packets if
the gate open time is insufficient for the packet transmission by setting
the Strict_End bit. Thus, it is expected for this counter to be always
zero at this moment.

Inspired from enetc_taprio_stats() and enetc_taprio_queue_stats(), now
driver also report the tx_overruns counter per traffic class.

User can get this counter by using below command:
1) tc -s qdisc show dev <interface> root
2) tc -s class show dev <interface>

Test Result (Before):
class mq :1 root
 Sent 1289 bytes 20 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0
class mq :2 root
 Sent 124 bytes 2 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0
class mq :3 root
 Sent 46028 bytes 86 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0
class mq :4 root
 Sent 2596 bytes 14 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

Test Result (After):
class taprio 100:1 root
 Sent 8491 bytes 38 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0
 Transmit overruns: 0
class taprio 100:2 root
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0
 Transmit overruns: 0
class taprio 100:3 root
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0
 Transmit overruns: 0
class taprio 100:4 root
 Sent 994 bytes 11 pkt (dropped 0, overlimits 0 requeues 1)
 backlog 0b 0p requeues 1
 Transmit overruns: 0

Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20230714201428.1718097-1-anthony.l.nguyen@intel.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agoptp: Explicitly include correct DT includes
Rob Herring [Fri, 14 Jul 2023 17:49:22 +0000 (11:49 -0600)]
ptp: Explicitly include correct DT includes

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Link: https://lore.kernel.org/r/20230714174922.4063153-1-robh@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agonetconsole: Append kernel version to message
Breno Leitao [Fri, 14 Jul 2023 11:13:29 +0000 (04:13 -0700)]
netconsole: Append kernel version to message

Create a new netconsole runtime option that prepends the kernel version in
the netconsole message. This is useful to map kernel messages to kernel
version in a simple way, i.e., without checking somewhere which kernel
version the host that sent the message is using.

If this option is selected, then the "<release>," is prepended before the
netconsole message. This is an example of a netconsole output, with
release feature enabled:

6.4.0-01762-ga1ba2ffe946e;12,426,112883998,-;this is a test

Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20230714111330.3069605-1-leitao@debian.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agoMerge branch 'remove-some-unused-phylink-legacy'
Paolo Abeni [Tue, 18 Jul 2023 07:47:11 +0000 (09:47 +0200)]
Merge branch 'remove-some-unused-phylink-legacy'

Russell King says:

====================
Remove some unused phylink legacy

I believe we are now in a position where some of the legacy phylink code
can be removed!

I believe that all DSA drivers do not make use of any pre-March 2020
phylink behaviour - all drivers now seem to set legacy_pre_march2020 to
false, and the conditions that DSA sets it to true are no longer
satisifed by any driver.

Moreover, no one uses the .mac_an_restart() method, so this can also be
removed.
====================

Link: https://lore.kernel.org/r/ZLERQ2OBrv44Ppyc@shell.armlinux.org.uk
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agonet: phylink: remove legacy mac_an_restart() method
Russell King (Oracle) [Fri, 14 Jul 2023 09:12:17 +0000 (10:12 +0100)]
net: phylink: remove legacy mac_an_restart() method

The mac_an_restart() method is now completely unused, and has been
superseded by phylink_pcs support. Remove this method.

Since phylink_pcs_mac_an_restart() now only deals with the PCS, rename
the function to remove the _mac infix.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agonet: dsa: remove legacy_pre_march2020 from drivers
Russell King (Oracle) [Fri, 14 Jul 2023 09:12:12 +0000 (10:12 +0100)]
net: dsa: remove legacy_pre_march2020 from drivers

Since DSA no longer marks anything as phylink-legacy, there is now no
need for DSA drivers to set this member to false. Remove all instances
of this.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agonet: dsa: remove legacy_pre_march2020 detection
Russell King (Oracle) [Fri, 14 Jul 2023 09:12:07 +0000 (10:12 +0100)]
net: dsa: remove legacy_pre_march2020 detection

All drivers are now updated for the March 2020 changes, and no longer
make use of the mac_pcs_get_state() or mac_an_restart() operations,
which are now NULL across all DSA drivers. All DSA drivers don't look
at speed, duplex, pause or advertisement in their phylink_mac_config()
method either.

Remove support for these operations from DSA, and stop marking DSA as
a legacy driver by default.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agonet: ftgmac100: support getting MAC address from NVMEM
Paul Fertser [Thu, 13 Jul 2023 09:57:43 +0000 (12:57 +0300)]
net: ftgmac100: support getting MAC address from NVMEM

Make use of of_get_ethdev_address() to support reading MAC address not
only from the usual DT nodes but also from an NVMEM provider (e.g. using
a dedicated area in an FRU EEPROM).

Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Link: https://lore.kernel.org/r/20230713095743.30517-1-fercerpav@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agoMerge branch 'phy-at803x-support'
David S. Miller [Mon, 17 Jul 2023 09:15:14 +0000 (10:15 +0100)]
Merge branch 'phy-at803x-support'

Luo Jie says:

====================
net: phy: at803x: support qca8081 1G version chip

This patch series add supporting qca8081 1G version chip, the 1G version
chip can be identified by the register mmd7.0x901d bit0.

In addition, qca8081 does not support 1000BaseX mode and the sgmii fifo
reset is added on the link changed, which assert the fifo on the link
down, deassert the fifo on the link up.

Changes in v1:
* switch to use genphy_c45_pma_read_abilities.
* remove the patch [remove 1000BaseX mode of qca8081].
* move the sgmii fifo reset to link_change_notify.

Changes in v2:
* split the qca8081 1G chip support patch.
* improve the slave seed config, disable it if master preferred.

Changes in v3:
* fix the comments.
* add the help function qca808x_has_fast_retrain_or_slave_seed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: phy: at803x: add qca8081 fifo reset on the link changed
Luo Jie [Sun, 16 Jul 2023 08:49:24 +0000 (16:49 +0800)]
net: phy: at803x: add qca8081 fifo reset on the link changed

The qca8081 sgmii fifo needs to be reset on link down and
released on the link up in case of any abnormal issue
such as the packet blocked on the PHY.

Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: phy: at803x: remove qca8081 1G fast retrain and slave seed config
Luo Jie [Sun, 16 Jul 2023 08:49:23 +0000 (16:49 +0800)]
net: phy: at803x: remove qca8081 1G fast retrain and slave seed config

The fast retrain and slave seed configs are only applicable when the 2.5G
ability is supported.

Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: phy: at803x: support qca8081 1G chip type
Luo Jie [Sun, 16 Jul 2023 08:49:22 +0000 (16:49 +0800)]
net: phy: at803x: support qca8081 1G chip type

The qca8081 1G chip version does not support 2.5 capability, which
is distinguished from qca8081 2.5G chip according to the bit0 of
register mmd7.0x901d, the 1G version chip also has the same PHY ID
as the normal qca8081 2.5G chip.

Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: phy: at803x: enable qca8081 slave seed conditionally
Luo Jie [Sun, 16 Jul 2023 08:49:21 +0000 (16:49 +0800)]
net: phy: at803x: enable qca8081 slave seed conditionally

qca8081 is the single port PHY, the slave prefer mode is used
by default.

if the phy master perfer mode is configured, the slave seed
configuration should not be enabled, since the slave seed
enablement is for making PHY linked as slave mode easily.

disable slave seed if the master mode is preferred.

Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: phy: at803x: merge qca8081 slave seed function
Luo Jie [Sun, 16 Jul 2023 08:49:20 +0000 (16:49 +0800)]
net: phy: at803x: merge qca8081 slave seed function

merge the seed enablement and seed value configuration into
one function, since the random seed value is needed to be
configured when the seed is enabled.

Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: phy: at803x: support qca8081 genphy_c45_pma_read_abilities
Luo Jie [Sun, 16 Jul 2023 08:49:19 +0000 (16:49 +0800)]
net: phy: at803x: support qca8081 genphy_c45_pma_read_abilities

qca8081 PHY supports to use genphy_c45_pma_read_abilities for
getting the PHY features supported except for the autoneg ability

but autoneg ability exists in MDIO_STAT1 instead of MMD7.1, add it
manually after calling genphy_c45_pma_read_abilities.

Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agoMerge branch 'qrtr-fixes'
David S. Miller [Mon, 17 Jul 2023 08:02:30 +0000 (09:02 +0100)]
Merge branch 'qrtr-fixes'

Vignesh Viswanathan says:

====================
net: qrtr: Few fixes in QRTR

Add fixes in QRTR ns to change server and nodes radix tree to xarray to
avoid a use-after-free while iterating through the server or nodes
radix tree.

Also fix the destination port value for IPCR control buffer on older
targets.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: qrtr: Handle IPCR control port format of older targets
Vignesh Viswanathan [Fri, 14 Jul 2023 05:58:46 +0000 (11:28 +0530)]
net: qrtr: Handle IPCR control port format of older targets

The destination port value in the IPCR control buffer on older
targets is 0xFFFF. Handle the same by updating the dst_port to
QRTR_PORT_CTRL.

Signed-off-by: Vignesh Viswanathan <quic_viswanat@quicinc.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: qrtr: ns: Change nodes radix tree to xarray
Vignesh Viswanathan [Fri, 14 Jul 2023 05:58:45 +0000 (11:28 +0530)]
net: qrtr: ns: Change nodes radix tree to xarray

There is a use after free scenario while iterating through the nodes
radix tree despite the ns being a single threaded process. This can
happen when the radix tree APIs are not synchronized with the
rcu_read_lock() APIs.

Convert the radix tree for nodes to xarray to take advantage of the
built in rcu lock usage provided by xarray.

Signed-off-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Vignesh Viswanathan <quic_viswanat@quicinc.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: qrtr: ns: Change servers radix tree to xarray
Vignesh Viswanathan [Fri, 14 Jul 2023 05:58:44 +0000 (11:28 +0530)]
net: qrtr: ns: Change servers radix tree to xarray

There is a use after free scenario while iterating through the servers
radix tree despite the ns being a single threaded process. This can
happen when the radix tree APIs are not synchronized with the
rcu_read_lock() APIs.

Convert the radix tree for servers to xarray to take advantage of the
built in rcu lock usage provided by xarray.

Signed-off-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Vignesh Viswanathan <quic_viswanat@quicinc.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agoMerge branch 'brcm-asp-2.0-support'
David S. Miller [Mon, 17 Jul 2023 06:39:04 +0000 (07:39 +0100)]
Merge branch 'brcm-asp-2.0-support'

Justin Chen says:

====================
Brcm ASP 2.0 Ethernet Controller

Add support for the Broadcom ASP 2.0 Ethernet controller which is first
introduced with 72165.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agoMAINTAINERS: ASP 2.0 Ethernet driver maintainers
Justin Chen [Thu, 13 Jul 2023 22:19:06 +0000 (15:19 -0700)]
MAINTAINERS: ASP 2.0 Ethernet driver maintainers

Add maintainers entry for ASP 2.0 Ethernet driver.

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: phy: bcm7xxx: Add EPHY entry for 74165
Florian Fainelli [Thu, 13 Jul 2023 22:19:05 +0000 (15:19 -0700)]
net: phy: bcm7xxx: Add EPHY entry for 74165

74165 is a 16nm process SoC with a 10/100 integrated Ethernet PHY,
utilize the recently defined 16nm EPHY macro to configure that PHY.

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: phy: mdio-bcm-unimac: Add asp v2.0 support
Justin Chen [Thu, 13 Jul 2023 22:19:04 +0000 (15:19 -0700)]
net: phy: mdio-bcm-unimac: Add asp v2.0 support

Add mdio compat string for ASP 2.0 ethernet driver.

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: bcmasp: Add support for ethtool driver stats
Justin Chen [Thu, 13 Jul 2023 22:19:03 +0000 (15:19 -0700)]
net: bcmasp: Add support for ethtool driver stats

Add support for ethernet driver specific stats.

Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: bcmasp: Add support for ethtool standard stats
Justin Chen [Thu, 13 Jul 2023 22:19:02 +0000 (15:19 -0700)]
net: bcmasp: Add support for ethtool standard stats

Add support for eth_mac_stats, rmon_stats, and eth_ctrl_stats.

Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: bcmasp: Add support for eee mode
Justin Chen [Thu, 13 Jul 2023 22:19:01 +0000 (15:19 -0700)]
net: bcmasp: Add support for eee mode

Add support for eee mode.

Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: bcmasp: Add support for wake on net filters
Justin Chen [Thu, 13 Jul 2023 22:19:00 +0000 (15:19 -0700)]
net: bcmasp: Add support for wake on net filters

Add support for wake on network filters. The max match is 256 bytes.

Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: bcmasp: Add support for WoL magic packet
Justin Chen [Thu, 13 Jul 2023 22:18:59 +0000 (15:18 -0700)]
net: bcmasp: Add support for WoL magic packet

Add support for Wake-On-Lan magic packet and magic packet with password.

Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: bcmasp: Add support for ASP2.0 Ethernet controller
Justin Chen [Thu, 13 Jul 2023 22:18:58 +0000 (15:18 -0700)]
net: bcmasp: Add support for ASP2.0 Ethernet controller

Add support for the Broadcom ASP 2.0 Ethernet controller which is first
introduced with 72165. This controller features two distinct Ethernet
ports that can be independently operated.

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agodt-bindings: net: Brcm ASP 2.0 Ethernet controller
Florian Fainelli [Thu, 13 Jul 2023 22:18:57 +0000 (15:18 -0700)]
dt-bindings: net: Brcm ASP 2.0 Ethernet controller

Add a binding document for the Broadcom ASP 2.0 Ethernet
controller.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agodt-bindings: net: brcm,unimac-mdio: Add asp-v2.0
Justin Chen [Thu, 13 Jul 2023 22:18:56 +0000 (15:18 -0700)]
dt-bindings: net: brcm,unimac-mdio: Add asp-v2.0

The ASP 2.0 Ethernet controller uses a brcm unimac.

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agonet: fec: Refactor: rename `adapter` to `fep`
Csókás Bence [Thu, 13 Jul 2023 11:09:33 +0000 (11:09 +0000)]
net: fec: Refactor: rename `adapter` to `fep`

Rename local `struct fec_enet_private *adapter` to `fep` in `fec_ptp_gettime()` to match the rest of the driver

Signed-off-by: Csókás Bence <csokas.bence@prolan.hu>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agogve: trivial spell fix Recive to Receive
Jesper Dangaard Brouer [Thu, 13 Jul 2023 15:54:37 +0000 (17:54 +0200)]
gve: trivial spell fix Recive to Receive

Spotted this trivial spell mistake while casually reading
the google GVE driver code.

Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoMerge branch 'mlxsw-rif-pvid'
David S. Miller [Fri, 14 Jul 2023 09:20:15 +0000 (10:20 +0100)]
Merge branch 'mlxsw-rif-pvid'

Petr Machata says:

====================
mlxsw: Manage RIF across PVID changes

The mlxsw driver currently makes the assumption that the user applies
configuration in a bottom-up manner. Thus netdevices need to be added to
the bridge before IP addresses are configured on that bridge or SVI added
on top of it. Enslaving a netdevice to another netdevice that already has
uppers is in fact forbidden by mlxsw for this reason. Despite this safety,
it is rather easy to get into situations where the offloaded configuration
is just plain wrong.

As an example, take a front panel port, configure an IP address: it gets a
RIF. Now enslave the port to the bridge, and the RIF is gone. Remove the
port from the bridge again, but the RIF never comes back. There is a number
of similar situations, where changing the configuration there and back
utterly breaks the offload.

The situation is going to be made better by implementing a range of replays
and post-hoc offloads.

In this patch set, address the ordering issues related to creation of
bridge RIFs. Currently, mlxsw has several shortcomings with regards to RIF
handling due to PVID changes:

- In order to cause RIF for a bridge device to be created, the user is
  expected first to set PVID, then to add an IP address. The reverse
  ordering is disallowed, which is not very user-friendly.

- When such bridge gets a VLAN upper whose VID was the same as the existing
  PVID, and this VLAN netdevice gets an IP address, a RIF is created for
  this netdevice. The new RIF is then assigned to the 802.1Q FID for the
  given VID. This results in a working configuration. However, then, when
  the VLAN netdevice is removed again, the RIF for the bridge itself is
  never reassociated to the PVID.

- PVID cannot be changed once the bridge has uppers. Presumably this is
  because the driver does not manage RIFs properly in face of PVID changes.
  However, as the previous point shows, it is still possible to get into
  invalid configurations.

This patch set addresses these issues and relaxes some of the ordering
requirements that mlxsw had. The patch set proceeds as follows:

- In patch #1, pass extack to mlxsw_sp_br_ban_rif_pvid_change()

- To relax ordering between setting PVID and adding an IP address to a
  bridge, mlxsw must be able to request that a RIF is created with a given
  VLAN ID, instead of trying to deduce it from the current netdevice
  settings, which do not reflect the user-requested values yet. This is
  done in patches #2 and #3.

- Similarly, mlxsw_sp_inetaddr_bridge_event() will need to make decisions
  based on the user-requested value of PVID, not the current value. Thus in
  patches #4 and #5, add a new argument which carries the requested PVID
  value.

- Finally in patch #6 relax the ban on PVID changes when a bridge has
  uppers. Instead, add the logic necessary for creation of a RIF as a
  result of PVID change.

- Relevant selftests are presented afterwards. In patch #7 a preparatory
  helper is added to lib.sh. Patches #8, #9, #10 and #11 include selftests
  themselves.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoselftests: router_bridge_pvid_vlan_upper: Add a new selftest
Petr Machata [Thu, 13 Jul 2023 16:15:34 +0000 (18:15 +0200)]
selftests: router_bridge_pvid_vlan_upper: Add a new selftest

This tests whether addition and deletion of a VLAN upper that coincides
with the current PVID setting throws off forwarding.

This selftests is specifically geared towards offloading drivers. In
particular, mlxsw used to fail this selftest, and an earlier patch in this
patchset fixes the issue. However, there's nothing HW-specific in the test
itself (it absolutely is supposed to pass on SW datapath), and therefore it
is put into the generic forwarding directory.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoselftests: router_bridge_vlan_upper_pvid: Add a new selftest
Petr Machata [Thu, 13 Jul 2023 16:15:33 +0000 (18:15 +0200)]
selftests: router_bridge_vlan_upper_pvid: Add a new selftest

This tests whether changes to PVID that coincide with an existing VLAN
upper throw off forwarding. This selftests is specifically geared towards
offloading drivers, but since there's nothing HW-specific in the test
itself (it absolutely is supposed to pass on SW datapath), it is put into
the generic forwarding directory.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoselftests: router_bridge_vlan: Add PVID change test
Petr Machata [Thu, 13 Jul 2023 16:15:32 +0000 (18:15 +0200)]
selftests: router_bridge_vlan: Add PVID change test

Add an alternative path involving VLAN 777 instead of the current 555. Then
add tests that verify that marking 777 as PVID makes the 555 path not work,
and the 777 path work.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoselftests: router_bridge: Add tests to remove and add PVID
Petr Machata [Thu, 13 Jul 2023 16:15:31 +0000 (18:15 +0200)]
selftests: router_bridge: Add tests to remove and add PVID

This test relies on PVID being configured on the bridge itself. Thus when
it is deconfigured, the system should lose the ability to forward traffic.
Later when it is added again, the ability to forward traffic should be
regained. Add tests to exercise these configuration changes and verify
results.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoselftests: forwarding: lib: Add ping6_, ping_test_fails()
Petr Machata [Thu, 13 Jul 2023 16:15:30 +0000 (18:15 +0200)]
selftests: forwarding: lib: Add ping6_, ping_test_fails()

Add two helpers to run a ping test that succeeds when the pings themselves
fail.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agomlxsw: spectrum_switchdev: Manage RIFs on PVID change
Petr Machata [Thu, 13 Jul 2023 16:15:29 +0000 (18:15 +0200)]
mlxsw: spectrum_switchdev: Manage RIFs on PVID change

Currently, mlxsw has several shortcomings with regards to RIF handling due
to PVID changes:

- In order to cause RIF for a bridge device to be created, the user is
  expected first to set PVID, then to add an IP address. The reverse
  ordering is disallowed, which is not very user-friendly.

- When such bridge gets a VLAN upper whose VID was the same as the existing
  PVID, and this VLAN netdevice gets an IP address, a RIF is created for
  this netdevice. The new RIF is then assigned to the 802.1Q FID for the
  given VID. This results in a working configuration. However, then, when
  the VLAN netdevice is removed again, the RIF for the bridge itself is
  never reassociated to the VLAN.

- PVID cannot be changed once the bridge has uppers. Presumably this is
  because the driver does not manage RIFs properly in face of PVID changes.
  However, as the previous point shows, it is still possible to get into
  invalid configurations.

In this patch, add the logic necessary for creation of a RIF as a result of
PVID change. Moreover, when a VLAN upper is created whose VID matches lower
PVID, do not create RIF for this netdevice.

These changes obviate the need for ordering of IP address additions and
PVID configuration, so stop forbidding addition of an IP address to a
PVID-less bridge. Instead, bail out quietly. Also stop preventing PVID
changes when the bridge has uppers.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agomlxsw: spectrum_router: mlxsw_sp_inetaddr_bridge_event: Add an argument
Petr Machata [Thu, 13 Jul 2023 16:15:28 +0000 (18:15 +0200)]
mlxsw: spectrum_router: mlxsw_sp_inetaddr_bridge_event: Add an argument

For purposes of replay, mlxsw_sp_inetaddr_bridge_event() will need to make
decisions based on the proposed value of PVID. Querying PVID reveals the
current settings, not the in-flight values that the user requested and that
the notifiers are acting upon. Add a parameter, lower_pvid, which carries
the proposed PVID of the lower bridge, or -1 if the lower is not a bridge.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agomlxsw: spectrum_router: Adjust mlxsw_sp_inetaddr_vlan_event() coding style
Petr Machata [Thu, 13 Jul 2023 16:15:27 +0000 (18:15 +0200)]
mlxsw: spectrum_router: Adjust mlxsw_sp_inetaddr_vlan_event() coding style

The bridge branch of the dispatch in this function is going to get more
code and will need curly braces. Per the doctrine, that means the whole
if-else chain should get them.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agomlxsw: spectrum_router: Take VID for VLAN FIDs from RIF params
Petr Machata [Thu, 13 Jul 2023 16:15:26 +0000 (18:15 +0200)]
mlxsw: spectrum_router: Take VID for VLAN FIDs from RIF params

Currently, when an IP address is added to a bridge that has no PVID, the
operation is rejected. An IP address addition is interpreted as a request
to create a RIF for the bridge device, but without a PVID there is no VLAN
for which the RIF should be created. Thus the correct way to create a RIF
for a bridge as a user is to first add a PVID, and then add the IP address.

Ideally this ordering requirement would not exist. RIF would be created
either because an IP address is added, or because a PVID is added,
depending on which comes last.

For that, the switchdev code (which notices the PVID change request) must
be able to request that a RIF is created with a given VLAN ID, because at
the time that the PVID notification is distributed, the PVID setting is not
yet visible for querying.

Therefore when creating a VLAN-based RIF, use mlxsw_sp_rif_params.vid to
communicate the VID, and do not determine it ad-hoc in the fid_get
callback.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agomlxsw: spectrum_router: Pass struct mlxsw_sp_rif_params to fid_get
Petr Machata [Thu, 13 Jul 2023 16:15:25 +0000 (18:15 +0200)]
mlxsw: spectrum_router: Pass struct mlxsw_sp_rif_params to fid_get

The fid_get callback is called to allocate a FID for the newly-created RIF.
In a following patch, the fid_get implementation for VLANs will be modified
to take the VLAN ID from the parameters instead of deducing it from the
netdevice. To that end, propagate the RIF parameters to the fid_get
callback.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agomlxsw: spectrum_switchdev: Pass extack to mlxsw_sp_br_ban_rif_pvid_change()
Petr Machata [Thu, 13 Jul 2023 16:15:24 +0000 (18:15 +0200)]
mlxsw: spectrum_switchdev: Pass extack to mlxsw_sp_br_ban_rif_pvid_change()

Currently the reason for rejection of PVID manipulation is dumped to
syslog, and a generic -EBUSY is returned to the userspace. But
switchdev_handle_port_obj_add(), through which we get to
mlxsw_sp_port_vlans_add(), handles extack just fine, and we can pass the
message this way.

This improves visibility into reasons why the request to change PVID
was rejected. Before the change:

 # bridge vlan add dev br vid 2 self pvid untagged
 RTNETLINK answers: Device or resource busy
 (plus a syslog line)

After the change:

 # bridge vlan add dev br vid 2 self pvid untagged
 Error: mlxsw_spectrum: Can't change PVID, it's used by router interface.

Note that this particular error message is going away in the following
patches. However the ability to pass error messages through extack will be
useful more broadly for communicating in particular reasons why a RIF
failed to be created.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoMerge branch 'macsec-selftests'
David S. Miller [Fri, 14 Jul 2023 08:16:53 +0000 (09:16 +0100)]
Merge branch 'macsec-selftests'

Sabrina Dubroca says:

====================
net: add MACsec offload selftests

Patch 1 adds MACsec offload to netdevsim (unchanged from v2).

Patch 2 adds a corresponding selftest to the rtnetlink testsuite.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoselftests: rtnetlink: add MACsec offload tests
Sabrina Dubroca [Thu, 13 Jul 2023 13:20:24 +0000 (15:20 +0200)]
selftests: rtnetlink: add MACsec offload tests

Like the IPsec offload test, this requires netdevsim.

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonetdevsim: add dummy macsec offload
Sabrina Dubroca [Thu, 13 Jul 2023 13:20:23 +0000 (15:20 +0200)]
netdevsim: add dummy macsec offload

When the kernel is compiled with MACsec support, add the
NETIF_F_HW_MACSEC feature to netdevsim devices and implement
macsec_ops.

To allow easy testing of failure from the device, support is limited
to 3 SecY's per netdevsim device, and 1 RXSC per SecY.

v2:
 - nsim_macsec_add_secy, return -ENOSPC if secy_count isn't full but
   we can't find an empty slot (Simon Horman)
 - add sci_to_cpu to make sparse happy (Simon Horman)
 - remove set but not used secy variable (kernel test robot and
   Simon Horman)

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agodevlink: remove reload failed checks in params get/set callbacks
Jiri Pirko [Thu, 13 Jul 2023 09:44:19 +0000 (11:44 +0200)]
devlink: remove reload failed checks in params get/set callbacks

The checks in question were introduced by:
commit 6b4db2e528f6 ("devlink: Fix use-after-free after a failed reload").
That fixed an issue of reload with mlxsw driver.

Back then, that was a valid fix, because there was a limitation
in place that prevented drivers from registering/unregistering params
when devlink instance was registered.

It was possible to do the fix differently by changing drivers to
register/unregister params in appropriate places making sure the ops
operate only on memory which is allocated and initialized. But that,
as a dependency, would require to remove the limitation mentioned above.

Eventually, this limitation was lifted by:
commit 1d18bb1a4ddd ("devlink: allow registering parameters after the instance")

Also, the alternative fix (which also fixed another issue) was done by:
commit 74cbc3c03c82 ("mlxsw: spectrum_acl_tcam: Move devlink param to TCAM code").

Therefore, the checks are no longer relevant. Each driver should make
sure to have the params registered only when the memory the ops
are working with is allocated and initialized.

So remove the checks.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoMerge branch 'mv88e6xxx-phylink_pcs'
David S. Miller [Fri, 14 Jul 2023 07:51:49 +0000 (08:51 +0100)]
Merge branch 'mv88e6xxx-phylink_pcs'

Russell King says:

====================
Convert mv88e6xxx to phylink_pcs

This series (previously posted with further patches on the 26 June as
RFC) converts mv88e6xxx to phylink_pcs, and thus moves it from being
a pre-March 2020 legacy driver.

The first four patches lay the ground-work for the conversion by
adding four new methods to the phylink_pcs operations structure:

  pcs_enable() - called when the PCS is going to start to be used
  pcs_disable() - called when the PCS is no longer being used

  pcs_pre_config() - called before the MAC configuration method
  pcs_post_config() - called after the MAC configuration method
      Both of these are necessary for some of the mv88e639x
      workarounds.

We also add the ability to inform phylink of a change to the PCS
state without involving the MAC later, by providing
phylink_pcs_change() which takes a phylink_pcs structure rather than
a phylink structure. phylink maintains which instance the PCS is
conencted to, so internally it can do the right thing when the PCS
is in-use.

Then we provide some additional mdiobus and mdiodev accessors that
we will be using in the new PCS drivers.

The changes for mv88e6xxx follow, and the first one needs to be
explicitly pointed out - we (Andrew and myself) have both decided that
all possible approaches to maintaining backwards compatibility with DT
have been exhaused - everyone has some objection to everything that
has been proposed. So, after many years of trying, we have decided
that this is just an impossibility, and with this patch, we are now
intentionally and knowingly breaking any DT that does not specify the
CPU and DSA port fixed-link parameters. Hence why Andrew has recently
been submitting DT update patches. It is regrettable that it has come
to this.

Following this, we start preparing 88e6xxx for phylink_pcs conversion
by padding the mac_select_pcs() DSA method, and the internal hooks to
create and tear-down PCS instances. Rather than bloat the already very
large mv88e6xxx_ops structure, I decided that it would be better that
the new internal chip specific PCS methods are all grouped within their
own structure - and this structure can be declared in the PCS drivers
themselves.

Then we have the actual conversion patches, one for each family of PCS.

Lastly, we clean up the driver after conversion, removing all the now
redundant code.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: dsa: mv88e6xxx: cleanup after phylink_pcs conversion
Russell King (Oracle) [Thu, 13 Jul 2023 08:42:59 +0000 (09:42 +0100)]
net: dsa: mv88e6xxx: cleanup after phylink_pcs conversion

Now that mv88e6xxx is completely converted to using phylink_pcs
support, we have no need for the serdes methods. Remove all this
infrastructure. Also remove the __maybe_unused from
mv88e6xxx_pcs_select().

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: dsa: mv88e6xxx: convert 88e639x to phylink_pcs
Russell King (Oracle) [Thu, 13 Jul 2023 08:42:53 +0000 (09:42 +0100)]
net: dsa: mv88e6xxx: convert 88e639x to phylink_pcs

Convert the 88E6390, 88E6390X, and 88E6393X family of switches to use
the phylink_pcs infrastructure.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: dsa: mv88e6xxx: convert 88e6352 to phylink_pcs
Russell King [Thu, 13 Jul 2023 08:42:48 +0000 (09:42 +0100)]
net: dsa: mv88e6xxx: convert 88e6352 to phylink_pcs

Convert the 88E6352 SERDES code to use the phylink_pcs infrastructure.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: dsa: mv88e6xxx: convert 88e6185 to phylink_pcs
Russell King (Oracle) [Thu, 13 Jul 2023 08:42:43 +0000 (09:42 +0100)]
net: dsa: mv88e6xxx: convert 88e6185 to phylink_pcs

Convert the 88E6185 SERDES code to use the phylink_pcs infrastructure.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: dsa: mv88e6xxx: export mv88e6xxx_pcs_decode_state()
Russell King (Oracle) [Thu, 13 Jul 2023 08:42:38 +0000 (09:42 +0100)]
net: dsa: mv88e6xxx: export mv88e6xxx_pcs_decode_state()

Rename and export the PCS state decoding function so our PCS can
make use of the functionality provided by this.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: dsa: mv88e6xxx: add infrastructure for phylink_pcs
Russell King (Oracle) [Thu, 13 Jul 2023 08:42:33 +0000 (09:42 +0100)]
net: dsa: mv88e6xxx: add infrastructure for phylink_pcs

Add infrastructure for phylink_pcs to the mv88e6xxx driver. This
involves adding a mac_select_pcs() hook so we can pass the PCS to
phylink at the appropriate time, and a PCS initialisation function.

As the various chip implementations are converted to use phylink_pcs,
they are no longer reliant on the legacy phylink behaviour. We detect
this by the use of this infrastructure, or the lack of any serdes.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: dsa: mv88e6xxx: remove handling for DSA and CPU ports
Russell King (Oracle) [Thu, 13 Jul 2023 08:42:28 +0000 (09:42 +0100)]
net: dsa: mv88e6xxx: remove handling for DSA and CPU ports

As we now always use a fixed-link for DSA and CPU ports, we no longer
need the hack in the Marvell code to make this work. Remove it.

This is especially important with the conversion of DSA drivers to
phylink_pcs, as the PCS code only gets called if we are using
phylink for the port.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: mdio: add unlocked mdiobus and mdiodev bus accessors
Russell King (Oracle) [Thu, 13 Jul 2023 08:42:22 +0000 (09:42 +0100)]
net: mdio: add unlocked mdiobus and mdiodev bus accessors

Add the following unlocked accessors to complete the set:
__mdiobus_modify()
__mdiodev_read()
__mdiodev_write()
__mdiodev_modify()
__mdiodev_modify_changed()
which we will need for Marvell DSA PCS conversion.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: phylink: add support for PCS link change notifications
Russell King (Oracle) [Thu, 13 Jul 2023 08:42:17 +0000 (09:42 +0100)]
net: phylink: add support for PCS link change notifications

Add a function, phylink_pcs_change() which can be used by PCs drivers
to notify phylink about changes to the PCS link state.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: phylink: add pcs_pre_config()/pcs_post_config() methods
Russell King (Oracle) [Thu, 13 Jul 2023 08:42:12 +0000 (09:42 +0100)]
net: phylink: add pcs_pre_config()/pcs_post_config() methods

Add hooks that are called before and after the mac_config() call,
which will be needed to deal with errata workarounds for the
Marvell 88e639x DSA switches.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: phylink: add pcs_enable()/pcs_disable() methods
Russell King (Oracle) [Thu, 13 Jul 2023 08:42:07 +0000 (09:42 +0100)]
net: phylink: add pcs_enable()/pcs_disable() methods

Add phylink PCS enable/disable callbacks that will allow us to place
IEEE 802.3 register compliant PCS in power-down mode while not being
used.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: ngbe: add Wake on Lan support
Mengyuan Lou [Thu, 13 Jul 2023 06:09:11 +0000 (14:09 +0800)]
net: ngbe: add Wake on Lan support

Implement ethtool_ops get_wol and set_wol.
Implement Wake-on-LAN support.

Wol requires hardware board support which use sub id
to identify.
Magic packets are checked by fw, for now just support
WAKE_MAGIC.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agonet: dsa: ar9331: Use maple tree register cache
Mark Brown [Wed, 12 Jul 2023 23:45:58 +0000 (00:45 +0100)]
net: dsa: ar9331: Use maple tree register cache

We now have a regmap cache which uses a maple tree to store the register
state, this is a more modern data structure and the regmap level code
using it makes a number of assumptions better tuned for modern hardware
than those made by the rbtree cache type that the at9331 driver uses.
Switch the ar9331 driver to use the more modern data structure.

This should have minimal practical impact, it's mainly code
modernisation.

Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoMerge branch 'sk-const'
David S. Miller [Fri, 14 Jul 2023 07:27:33 +0000 (08:27 +0100)]
Merge branch 'sk-const'

Guillaume Nault says:

====================
net: Mark the sk parameter of routing functions as 'const'.

The sk_getsecid security hook prevents the use of a const sk pointer in
several routing functions. Since this hook should only read sk data,
make its sk argument const (patch 1), then constify the sk parameter of
various routing functions (patches 2-4).

Build-tested with make allmodconfig.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agopptp: Constify the po parameter of pptp_route_output().
Guillaume Nault [Tue, 11 Jul 2023 13:06:26 +0000 (15:06 +0200)]
pptp: Constify the po parameter of pptp_route_output().

Make it explicit that this function doesn't modify the socket passed as
parameter.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoipv6: Constify the sk parameter of several helper functions.
Guillaume Nault [Tue, 11 Jul 2023 13:06:21 +0000 (15:06 +0200)]
ipv6: Constify the sk parameter of several helper functions.

icmpv6_flow_init(), ip6_datagram_flow_key_init() and ip6_mc_hdr() don't
need to modify their sk argument. Make that explicit using const.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoipv4: Constify the sk parameter of ip_route_output_*().
Guillaume Nault [Tue, 11 Jul 2023 13:06:14 +0000 (15:06 +0200)]
ipv4: Constify the sk parameter of ip_route_output_*().

These functions don't need to modify the socket, so let's allow the
callers to pass a const struct sock *.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agosecurity: Constify sk in the sk_getsecid hook.
Guillaume Nault [Tue, 11 Jul 2023 13:06:08 +0000 (15:06 +0200)]
security: Constify sk in the sk_getsecid hook.

The sk_getsecid hook shouldn't need to modify its socket argument.
Make it const so that callers of security_sk_classify_flow() can use a
const struct sock *.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
16 months agoMerge branch 'net-stmmac-replace-boolean-fields-in-plat_stmmacenet_data-with-flags'
Jakub Kicinski [Fri, 14 Jul 2023 03:57:55 +0000 (20:57 -0700)]
Merge branch 'net-stmmac-replace-boolean-fields-in-plat_stmmacenet_data-with-flags'

Bartosz Golaszewski says:

====================
net: stmmac: replace boolean fields in plat_stmmacenet_data with flags

As suggested by Jose Abreu: let's drop all 12 boolean fields in
plat_stmmacenet_data and replace them with a common bitfield.
====================

Link: https://lore.kernel.org/r/20230710090001.303225-1-brgl@bgdev.pl
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the en_tx_lpi_clockgating field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 09:00:01 +0000 (11:00 +0200)]
net: stmmac: replace the en_tx_lpi_clockgating field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-13-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the rx_clk_runs_in_lpi field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 09:00:00 +0000 (11:00 +0200)]
net: stmmac: replace the rx_clk_runs_in_lpi field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-12-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the int_snapshot_en field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 08:59:59 +0000 (10:59 +0200)]
net: stmmac: replace the int_snapshot_en field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-11-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the ext_snapshot_en field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 08:59:58 +0000 (10:59 +0200)]
net: stmmac: replace the ext_snapshot_en field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-10-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the multi_msi_en field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 08:59:57 +0000 (10:59 +0200)]
net: stmmac: replace the multi_msi_en field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-9-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the vlan_fail_q_en field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 08:59:56 +0000 (10:59 +0200)]
net: stmmac: replace the vlan_fail_q_en field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-8-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the serdes_up_after_phy_linkup field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 08:59:55 +0000 (10:59 +0200)]
net: stmmac: replace the serdes_up_after_phy_linkup field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-7-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the tso_en field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 08:59:54 +0000 (10:59 +0200)]
net: stmmac: replace the tso_en field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-6-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the has_sun8i field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 08:59:53 +0000 (10:59 +0200)]
net: stmmac: replace the has_sun8i field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-5-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the use_phy_wol field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 08:59:52 +0000 (10:59 +0200)]
net: stmmac: replace the use_phy_wol field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-4-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the sph_disable field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 08:59:51 +0000 (10:59 +0200)]
net: stmmac: replace the sph_disable field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-3-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: stmmac: replace the has_integrated_pcs field with a flag
Bartosz Golaszewski [Mon, 10 Jul 2023 08:59:50 +0000 (10:59 +0200)]
net: stmmac: replace the has_integrated_pcs field with a flag

struct plat_stmmacenet_data contains several boolean fields that could be
easily replaced with a common integer 'flags' bitfield and bit defines.

Start the process with the has_integrated_pcs field.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-2-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonfp: prevent dropped counter increment during probe
Ziyang Chen [Wed, 12 Jul 2023 12:35:51 +0000 (14:35 +0200)]
nfp: prevent dropped counter increment during probe

The dev_rx_discards counter will increment by one when an interface is
toggled up and down. The main reason is that the driver first sends a
`NFP_NET_CFG_CTRL_ENABLE` configuration packet to the NIC to perform port
initialisation when an interface is set up. But there is a race between
physical link up and free list queue initialization which may lead to the
configuration packet being discarded.

To address this problem a new bit NFP_NET_CFG_CTRL_FREELIST_EN is added to
perform free list initialisation on the NIC. The FREELIST_EN should be sent
in advance to initialize free list queue. When a port is set to down,
FREELIST_EN should be sent after CTRL_ENABLE to avoid packet discards.

Signed-off-by: Ziyang Chen <ziyang.chen@corigine.com>
Acked-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Link: https://lore.kernel.org/r/20230712123551.13858-1-louis.peens@corigine.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoMerge branch 'selftests-mptcp-join-pass-args-in-new-env-vars'
Jakub Kicinski [Fri, 14 Jul 2023 03:34:54 +0000 (20:34 -0700)]
Merge branch 'selftests-mptcp-join-pass-args-in-new-env-vars'

Matthieu Baerts says:

====================
selftests: mptcp: join: pass args in new env vars

In this series, Geliang did some refactoring in the mptcp_join.sh file.

Patch 1 reduces the scope of some global env vars, only used by some
tests: easier to deal with.

Patch 2 uses a dedicated env var for fastclose case instead of re-using
addr_nr_ns2 with embedded info, clearer.

Patch 3 is similar but for the fullmesh case.

Patch 4 moves a positional but optional argument of run_tests() to an
env var like it has already been done with the other args, cleaner.
====================

Link: https://lore.kernel.org/r/20230712-upstream-net-next-20230712-selftests-mptcp-use-local-env-v1-0-f1c8b62fbf95@tessares.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoselftests: mptcp: add speed env var
Geliang Tang [Wed, 12 Jul 2023 16:03:19 +0000 (18:03 +0200)]
selftests: mptcp: add speed env var

Use a new env var speed instead of using 'speed' argument of run_tests()
and do_transfer(). It can be set with 'fast', 'slow', or the actual speed
number:

  run_tests $ns1 $ns2 10.0.1.1 slow

  ->

  speed=slow \
          run_tests $ns1 $ns2 10.0.1.1.

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/20230712-upstream-net-next-20230712-selftests-mptcp-use-local-env-v1-4-f1c8b62fbf95@tessares.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoselftests: mptcp: add fullmesh env var
Geliang Tang [Wed, 12 Jul 2023 16:03:18 +0000 (18:03 +0200)]
selftests: mptcp: add fullmesh env var

Use a new env var fullmesh instead of passing 'fullmesh_*' to addr_nr_ns2.
It can be set with the actual value of addr_nr_ns2 now:

  addr_nr_ns2=fullmesh_1 \
          run_tests $ns1 $ns2 10.0.1.1

  ->

  fullmesh=1 \
          run_tests $ns1 $ns2 10.0.1.1.

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/20230712-upstream-net-next-20230712-selftests-mptcp-use-local-env-v1-3-f1c8b62fbf95@tessares.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoselftests: mptcp: add fastclose env var
Geliang Tang [Wed, 12 Jul 2023 16:03:17 +0000 (18:03 +0200)]
selftests: mptcp: add fastclose env var

Use a new env var fastclose instead of passing fastclose to addr_nr_ns2.
It can be set with 'server' or 'client':

  addr_nr_ns2=fastclose_client \
          run_tests $ns1 $ns2 10.0.1.1

  ->

  fastclose=client \
          run_tests $ns1 $ns2 10.0.1.1.

With this change, the fullmesh flag setting code can be moved into
pm_nl_set_endpoint() from do_transfer().

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/20230712-upstream-net-next-20230712-selftests-mptcp-use-local-env-v1-2-f1c8b62fbf95@tessares.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoselftests: mptcp: set all env vars as local ones
Geliang Tang [Wed, 12 Jul 2023 16:03:16 +0000 (18:03 +0200)]
selftests: mptcp: set all env vars as local ones

It would be better to move the declaration of all the env variables to
do_transfer(), run_tests(), or pm_nl_set_endpoint() as local variables,
instead of exporting them globally at the beginning of the file.

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/20230712-upstream-net-next-20230712-selftests-mptcp-use-local-env-v1-1-f1c8b62fbf95@tessares.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoMerge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf...
Jakub Kicinski [Fri, 14 Jul 2023 02:13:24 +0000 (19:13 -0700)]
Merge tag 'for-netdev' of https://git./linux/kernel/git/bpf/bpf-next

Alexei Starovoitov says:

====================
pull-request: bpf-next 2023-07-13

We've added 67 non-merge commits during the last 15 day(s) which contain
a total of 106 files changed, 4444 insertions(+), 619 deletions(-).

The main changes are:

1) Fix bpftool build in presence of stale vmlinux.h,
   from Alexander Lobakin.

2) Introduce bpf_me_mcache_free_rcu() and fix OOM under stress,
   from Alexei Starovoitov.

3) Teach verifier actual bounds of bpf_get_smp_processor_id()
   and fix perf+libbpf issue related to custom section handling,
   from Andrii Nakryiko.

4) Introduce bpf map element count, from Anton Protopopov.

5) Check skb ownership against full socket, from Kui-Feng Lee.

6) Support for up to 12 arguments in BPF trampoline, from Menglong Dong.

7) Export rcu_request_urgent_qs_task, from Paul E. McKenney.

8) Fix BTF walking of unions, from Yafang Shao.

9) Extend link_info for kprobe_multi and perf_event links,
   from Yafang Shao.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (67 commits)
  selftests/bpf: Add selftest for PTR_UNTRUSTED
  bpf: Fix an error in verifying a field in a union
  selftests/bpf: Add selftests for nested_trust
  bpf: Fix an error around PTR_UNTRUSTED
  selftests/bpf: add testcase for TRACING with 6+ arguments
  bpf, x86: allow function arguments up to 12 for TRACING
  bpf, x86: save/restore regs with BPF_DW size
  bpftool: Use "fallthrough;" keyword instead of comments
  bpf: Add object leak check.
  bpf: Convert bpf_cpumask to bpf_mem_cache_free_rcu.
  bpf: Introduce bpf_mem_free_rcu() similar to kfree_rcu().
  selftests/bpf: Improve test coverage of bpf_mem_alloc.
  rcu: Export rcu_request_urgent_qs_task()
  bpf: Allow reuse from waiting_for_gp_ttrace list.
  bpf: Add a hint to allocated objects.
  bpf: Change bpf_mem_cache draining process.
  bpf: Further refactor alloc_bulk().
  bpf: Factor out inc/dec of active flag into helpers.
  bpf: Refactor alloc_bulk().
  bpf: Let free_all() return the number of freed elements.
  ...
====================

Link: https://lore.kernel.org/r/20230714020910.80794-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Jakub Kicinski [Fri, 14 Jul 2023 00:33:19 +0000 (17:33 -0700)]
Merge git://git./linux/kernel/git/netdev/net

Cross-merge networking fixes after downstream PR.

No conflicts or adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoselftests/bpf: Add selftest for PTR_UNTRUSTED
Yafang Shao [Thu, 13 Jul 2023 02:56:42 +0000 (02:56 +0000)]
selftests/bpf: Add selftest for PTR_UNTRUSTED

Add a new selftest to check the PTR_UNTRUSTED condition. Below is the
result,

 #160     ptr_untrusted:OK

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20230713025642.27477-5-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
16 months agobpf: Fix an error in verifying a field in a union
Yafang Shao [Thu, 13 Jul 2023 02:56:41 +0000 (02:56 +0000)]
bpf: Fix an error in verifying a field in a union

We are utilizing BPF LSM to monitor BPF operations within our container
environment. When we add support for raw_tracepoint, it hits below
error.

; (const void *)attr->raw_tracepoint.name);
27: (79) r3 = *(u64 *)(r2 +0)
access beyond the end of member map_type (mend:4) in struct (anon) with off 0 size 8

It can be reproduced with below BPF prog.

SEC("lsm/bpf")
int BPF_PROG(bpf_audit, int cmd, union bpf_attr *attr, unsigned int size)
{
switch (cmd) {
case BPF_RAW_TRACEPOINT_OPEN:
bpf_printk("raw_tracepoint is %s", attr->raw_tracepoint.name);
break;
default:
break;
}
return 0;
}

The reason is that when accessing a field in a union, such as bpf_attr,
if the field is located within a nested struct that is not the first
member of the union, it can result in incorrect field verification.

  union bpf_attr {
      struct {
          __u32 map_type; <<<< Actually it will find that field.
          __u32 key_size;
          __u32 value_size;
         ...
      };
      ...
      struct {
          __u64 name;    <<<< We want to verify this field.
          __u32 prog_fd;
      } raw_tracepoint;
  };

Considering the potential deep nesting levels, finding a perfect
solution to address this issue has proven challenging. Therefore, I
propose a solution where we simply skip the verification process if the
field in question is located within a union.

Fixes: 7e3617a72df3 ("bpf: Add array support to btf_struct_access")
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20230713025642.27477-4-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
16 months agoselftests/bpf: Add selftests for nested_trust
Yafang Shao [Thu, 13 Jul 2023 02:56:40 +0000 (02:56 +0000)]
selftests/bpf: Add selftests for nested_trust

Add selftests for nested_strust to check whehter PTR_UNTRUSTED is cleared
as expected, the result as follows:

 #141/1   nested_trust/test_read_cpumask:OK
 #141/2   nested_trust/test_skb_field:OK                    <<<<
 #141/3   nested_trust/test_invalid_nested_user_cpus:OK
 #141/4   nested_trust/test_invalid_nested_offset:OK
 #141/5   nested_trust/test_invalid_skb_field:OK            <<<<
 #141     nested_trust:OK

The #141/2 and #141/5 are newly added.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20230713025642.27477-3-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
16 months agobpf: Fix an error around PTR_UNTRUSTED
Yafang Shao [Thu, 13 Jul 2023 02:56:39 +0000 (02:56 +0000)]
bpf: Fix an error around PTR_UNTRUSTED

Per discussion with Alexei, the PTR_UNTRUSTED flag should not been
cleared when we start to walk a new struct, because the struct in
question may be a struct nested in a union. We should also check and set
this flag before we walk its each member, in case itself is a union.
We will clear this flag if the field is BTF_TYPE_SAFE_RCU_OR_NULL.

Fixes: 6fcd486b3a0a ("bpf: Refactor RCU enforcement in the verifier.")
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20230713025642.27477-2-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
16 months agoMerge branch 'bpf-x86-allow-function-arguments-up-to-12-for-tracing'
Alexei Starovoitov [Thu, 13 Jul 2023 23:04:57 +0000 (16:04 -0700)]
Merge branch 'bpf-x86-allow-function-arguments-up-to-12-for-tracing'

Menglong Dong says:

====================
bpf, x86: allow function arguments up to 12 for TRACING

From: Menglong Dong <imagedong@tencent.com>

For now, the BPF program of type BPF_PROG_TYPE_TRACING can only be used
on the kernel functions whose arguments count less than or equal to 6, if
not considering '> 8 bytes' struct argument. This is not friendly at all,
as too many functions have arguments count more than 6. According to the
current kernel version, below is a statistics of the function arguments
count:

argument count | function count
7              | 704
8              | 270
9              | 84
10             | 47
11             | 47
12             | 27
13             | 22
14             | 5
15             | 0
16             | 1

Therefore, let's enhance it by increasing the function arguments count
allowed in arch_prepare_bpf_trampoline(), for now, only x86_64.

In the 1st patch, we save/restore regs with BPF_DW size to make the code
in save_regs()/restore_regs() simpler.

In the 2nd patch, we make arch_prepare_bpf_trampoline() support to copy
function arguments in stack for x86 arch. Therefore, the maximum
arguments can be up to MAX_BPF_FUNC_ARGS for FENTRY, FEXIT and
MODIFY_RETURN. Meanwhile, we clean the potential garbage value when we
copy the arguments on-stack.

And the 3rd patch is for the testcases of the this series.

Changes since v9:
- fix the failed test cases of trampoline_count and get_func_args_test
  in the 3rd patch

Changes since v8:
- change the way to test fmod_ret in the 3rd patch

Changes since v7:
- split the testcases, and add fentry_many_args/fexit_many_args to
  DENYLIST.aarch64 in 3rd patch

Changes since v6:
- somit nits from commit message and comment in the 1st patch
- remove the inline in get_nr_regs() in the 1st patch
- rename some function and various in the 1st patch

Changes since v5:
- adjust the commit log of the 1st patch, avoiding confusing people that
  bugs exist in current code
- introduce get_nr_regs() to get the space that used to pass args on
  stack correct in the 2nd patch
- add testcases to tracing_struct.c instead of fentry_test.c and
  fexit_test.c

Changes since v4:
- consider the case of the struct in arguments can't be hold by regs
- add comment for some code
- add testcases for MODIFY_RETURN
- rebase to the latest

Changes since v3:
- try make the stack pointer 16-byte aligned. Not sure if I'm right :)
- introduce clean_garbage() to clean the grabage when argument count is 7
- use different data type in bpf_testmod_fentry_test{7,12}
- add testcase for grabage values in ctx

Changes since v2:
- keep MAX_BPF_FUNC_ARGS still
- clean garbage value in upper bytes in the 2nd patch
- move bpf_fentry_test{7,12} to bpf_testmod.c and rename them to
  bpf_testmod_fentry_test{7,12} meanwhile in the 3rd patch

Changes since v1:
- change the maximun function arguments to 14 from 12
- add testcases (Jiri Olsa)
- instead EMIT4 with EMIT3_off32 for "lea" to prevent overflow
====================

Link: https://lore.kernel.org/r/20230713040738.1789742-1-imagedong@tencent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
16 months agoselftests/bpf: add testcase for TRACING with 6+ arguments
Menglong Dong [Thu, 13 Jul 2023 04:07:38 +0000 (12:07 +0800)]
selftests/bpf: add testcase for TRACING with 6+ arguments

Add fentry_many_args.c and fexit_many_args.c to test the fentry/fexit
with 7/11 arguments. As this feature is not supported by arm64 yet, we
disable these testcases for arm64 in DENYLIST.aarch64. We can combine
them with fentry_test.c/fexit_test.c when arm64 is supported too.

Correspondingly, add bpf_testmod_fentry_test7() and
bpf_testmod_fentry_test11() to bpf_testmod.c

Meanwhile, add bpf_modify_return_test2() to test_run.c to test the
MODIFY_RETURN with 7 arguments.

Add bpf_testmod_test_struct_arg_7/bpf_testmod_test_struct_arg_7 in
bpf_testmod.c to test the struct in the arguments.

And the testcases passed on x86_64:

./test_progs -t fexit
Summary: 5/14 PASSED, 0 SKIPPED, 0 FAILED

./test_progs -t fentry
Summary: 3/2 PASSED, 0 SKIPPED, 0 FAILED

./test_progs -t modify_return
Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED

./test_progs -t tracing_struct
Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED

Signed-off-by: Menglong Dong <imagedong@tencent.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20230713040738.1789742-4-imagedong@tencent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
16 months agobpf, x86: allow function arguments up to 12 for TRACING
Menglong Dong [Thu, 13 Jul 2023 04:07:37 +0000 (12:07 +0800)]
bpf, x86: allow function arguments up to 12 for TRACING

For now, the BPF program of type BPF_PROG_TYPE_TRACING can only be used
on the kernel functions whose arguments count less than or equal to 6, if
not considering '> 8 bytes' struct argument. This is not friendly at all,
as too many functions have arguments count more than 6.

According to the current kernel version, below is a statistics of the
function arguments count:

argument count | function count
7              | 704
8              | 270
9              | 84
10             | 47
11             | 47
12             | 27
13             | 22
14             | 5
15             | 0
16             | 1

Therefore, let's enhance it by increasing the function arguments count
allowed in arch_prepare_bpf_trampoline(), for now, only x86_64.

For the case that we don't need to call origin function, which means
without BPF_TRAMP_F_CALL_ORIG, we need only copy the function arguments
that stored in the frame of the caller to current frame. The 7th and later
arguments are stored in "$rbp + 0x18", and they will be copied to the
stack area following where register values are saved.

For the case with BPF_TRAMP_F_CALL_ORIG, we need prepare the arguments
in stack before call origin function, which means we need alloc extra
"8 * (arg_count - 6)" memory in the top of the stack. Note, there should
not be any data be pushed to the stack before calling the origin function.
So 'rbx' value will be stored on a stack position higher than where stack
arguments are stored for BPF_TRAMP_F_CALL_ORIG.

According to the research of Yonghong, struct members should be all in
register or all on the stack. Meanwhile, the compiler will pass the
argument on regs if the remaining regs can hold the argument. Therefore,
we need save the arguments in order. Otherwise, disorder of the args can
happen. For example:

  struct foo_struct {
      long a;
      int b;
  };
  int foo(char, char, char, char, char, struct foo_struct,
          char);

the arg1-5,arg7 will be passed by regs, and arg6 will by stack. Therefore,
we should save/restore the arguments in the same order with the
declaration of foo(). And the args used as ctx in stack will be like this:

  reg_arg6   -- copy from regs
  stack_arg2 -- copy from stack
  stack_arg1
  reg_arg5   -- copy from regs
  reg_arg4
  reg_arg3
  reg_arg2
  reg_arg1

We use EMIT3_off32() or EMIT4() for "lea" and "sub". The range of the
imm in "lea" and "sub" is [-128, 127] if EMIT4() is used. Therefore,
we use EMIT3_off32() instead if the imm out of the range.

It works well for the FENTRY/FEXIT/MODIFY_RETURN.

Signed-off-by: Menglong Dong <imagedong@tencent.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20230713040738.1789742-3-imagedong@tencent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
16 months agobpf, x86: save/restore regs with BPF_DW size
Menglong Dong [Thu, 13 Jul 2023 04:07:36 +0000 (12:07 +0800)]
bpf, x86: save/restore regs with BPF_DW size

As we already reserve 8 byte in the stack for each reg, it is ok to
store/restore the regs in BPF_DW size. This will make the code in
save_regs()/restore_regs() simpler.

Signed-off-by: Menglong Dong <imagedong@tencent.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20230713040738.1789742-2-imagedong@tencent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
16 months agoMerge tag 'net-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 13 Jul 2023 21:21:22 +0000 (14:21 -0700)]
Merge tag 'net-6.5-rc2' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from netfilter, wireless and ebpf.

  Current release - regressions:

   - netfilter: conntrack: gre: don't set assured flag for clash entries

   - wifi: iwlwifi: remove 'use_tfh' config to fix crash

  Previous releases - regressions:

   - ipv6: fix a potential refcount underflow for idev

   - icmp6: ifix null-ptr-deref of ip6_null_entry->rt6i_idev in
     icmp6_dev()

   - bpf: fix max stack depth check for async callbacks

   - eth: mlx5e:
      - check for NOT_READY flag state after locking
      - fix page_pool page fragment tracking for XDP

   - eth: igc:
      - fix tx hang issue when QBV gate is closed
      - fix corner cases for TSN offload

   - eth: octeontx2-af: Move validation of ptp pointer before its usage

   - eth: ena: fix shift-out-of-bounds in exponential backoff

  Previous releases - always broken:

   - core: prevent skb corruption on frag list segmentation

   - sched:
      - cls_fw: fix improper refcount update leads to use-after-free
      - sch_qfq: account for stab overhead in qfq_enqueue

   - netfilter:
      - report use refcount overflow
      - prevent OOB access in nft_byteorder_eval

   - wifi: mt7921e: fix init command fail with enabled device

   - eth: ocelot: fix oversize frame dropping for preemptible TCs

   - eth: fec: recycle pages for transmitted XDP frames"

* tag 'net-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (79 commits)
  selftests: tc-testing: add test for qfq with stab overhead
  net/sched: sch_qfq: account for stab overhead in qfq_enqueue
  selftests: tc-testing: add tests for qfq mtu sanity check
  net/sched: sch_qfq: reintroduce lmax bound check for MTU
  wifi: cfg80211: fix receiving mesh packets without RFC1042 header
  wifi: rtw89: debug: fix error code in rtw89_debug_priv_send_h2c_set()
  net: txgbe: fix eeprom calculation error
  net/sched: make psched_mtu() RTNL-less safe
  net: ena: fix shift-out-of-bounds in exponential backoff
  netdevsim: fix uninitialized data in nsim_dev_trap_fa_cookie_write()
  net/sched: flower: Ensure both minimum and maximum ports are specified
  MAINTAINERS: Add another mailing list for QUALCOMM ETHQOS ETHERNET DRIVER
  docs: netdev: update the URL of the status page
  wifi: iwlwifi: remove 'use_tfh' config to fix crash
  xdp: use trusted arguments in XDP hints kfuncs
  bpf: cpumap: Fix memory leak in cpu_map_update_elem
  wifi: airo: avoid uninitialized warning in airo_get_rate()
  octeontx2-pf: Add additional check for MCAM rules
  net: dsa: Removed unneeded of_node_put in felix_parse_ports_node
  net: fec: use netdev_err_once() instead of netdev_err()
  ...