platform/kernel/linux-starfive.git
4 years agoamd8111e: Mark PM functions as __maybe_unused
Nathan Chancellor [Tue, 30 Jun 2020 21:00:33 +0000 (14:00 -0700)]
amd8111e: Mark PM functions as __maybe_unused

In certain configurations without power management support, the
following warnings happen:

../drivers/net/ethernet/amd/amd8111e.c:1623:12: warning:
'amd8111e_resume' defined but not used [-Wunused-function]
 1623 | static int amd8111e_resume(struct device *dev_d)
      |            ^~~~~~~~~~~~~~~
../drivers/net/ethernet/amd/amd8111e.c:1584:12: warning:
'amd8111e_suspend' defined but not used [-Wunused-function]
 1584 | static int amd8111e_suspend(struct device *dev_d)
      |            ^~~~~~~~~~~~~~~~

Mark these functions as __maybe_unused to make it clear to the compiler
that this is going to happen based on the configuration, which is the
standard for these types of functions.

Fixes: 2caf751fe080 ("amd8111e: Convert to generic power management")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'net-improve-devres-helpers'
David S. Miller [Tue, 30 Jun 2020 22:57:34 +0000 (15:57 -0700)]
Merge branch 'net-improve-devres-helpers'

Bartosz Golaszewski says:

====================
net: improve devres helpers

So it seems like there's no support for relaxing certain networking devres
helpers to not require previously allocated structures to also be managed.
However the way mdio devres variants are implemented is still wrong and I
modified my series to address it while keeping the functions strict.

First two patches modify the ixgbe driver to get rid of the last user of
devm_mdiobus_free().

Patches 3, 4, 5 and 6 are mostly cosmetic.

Patch 7 fixes the way devm_mdiobus_register() is implemented.

Patches 8 & 9 provide a managed variant of of_mdiobus_register() and
last patch uses it in mtk-star-emac driver.

v1 -> v2:
- drop the patch relaxing devm_register_netdev()
- require struct mii_bus to be managed in devm_mdiobus_register() and
  devm_of_mdiobus_register() but don't store that information in the
  structure itself: use devres_find() instead
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: ethernet: mtk-star-emac: use devm_of_mdiobus_register()
Bartosz Golaszewski [Mon, 29 Jun 2020 12:03:46 +0000 (14:03 +0200)]
net: ethernet: mtk-star-emac: use devm_of_mdiobus_register()

Shrink the code by using the managed variant of of_mdiobus_register().

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoof: mdio: provide devm_of_mdiobus_register()
Bartosz Golaszewski [Mon, 29 Jun 2020 12:03:45 +0000 (14:03 +0200)]
of: mdio: provide devm_of_mdiobus_register()

Implement a managed variant of of_mdiobus_register(). We need to make
mdio_devres into its own module because otherwise we'd hit circular
sumbol dependencies between phylib and of_mdio.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoof: mdio: remove the 'extern' keyword from function declarations
Bartosz Golaszewski [Mon, 29 Jun 2020 12:03:44 +0000 (14:03 +0200)]
of: mdio: remove the 'extern' keyword from function declarations

The 'extern' keyword in headers doesn't have any benefit. Remove them
all from the of_mdio.h header.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: don't abuse devres in devm_mdiobus_register()
Bartosz Golaszewski [Mon, 29 Jun 2020 12:03:43 +0000 (14:03 +0200)]
net: phy: don't abuse devres in devm_mdiobus_register()

We currently have two managed helpers for mdiobus - devm_mdiobus_alloc()
and devm_mdiobus_register(). The idea behind devres is that the release
callback releases whatever resource the devm function allocates. In the
mdiobus case however there's no devres associated with the device by
devm_mdiobus_register(). Instead the release callback for
devm_mdiobus_alloc(): _devm_mdiobus_free() unregisters the device if
it is marked as managed.

This all seems wrong. The managed structure shouldn't need to know or
care about whether it's managed or not - and this is the case now for
struct mii_bus. The devres wrapper should be opaque to the managed
resource.

This changeset makes devm_mdiobus_alloc() and devm_mdiobus_register()
conform to common devres standards: devm_mdiobus_alloc() allocates a
devres structure and registers a callback that will call mdiobus_free().
__devm_mdiobus_register() allocated another devres and registers a
callback that will unregister the bus.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agophy: mdio: add kerneldoc for __devm_mdiobus_register()
Bartosz Golaszewski [Mon, 29 Jun 2020 12:03:42 +0000 (14:03 +0200)]
phy: mdio: add kerneldoc for __devm_mdiobus_register()

This function is not documented. Add a short kerneldoc description.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agophy: un-inline devm_mdiobus_register()
Bartosz Golaszewski [Mon, 29 Jun 2020 12:03:41 +0000 (14:03 +0200)]
phy: un-inline devm_mdiobus_register()

Functions should only be static inline if they're very short. This
devres helper is already over 10 lines and it will grow soon as we'll
be improving upon its approach. Pull it into mdio_devres.c.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoDocumentation: devres: add missing mdio helper
Bartosz Golaszewski [Mon, 29 Jun 2020 12:03:40 +0000 (14:03 +0200)]
Documentation: devres: add missing mdio helper

We have a devres variant of mdiobus_register() but it's not listed in
devres.rst. Add it under other mdio devm functions.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: devres: rename the release callback of devm_register_netdev()
Bartosz Golaszewski [Mon, 29 Jun 2020 12:03:39 +0000 (14:03 +0200)]
net: devres: rename the release callback of devm_register_netdev()

Make it an explicit counterpart to devm_register_netdev() just like we
do with devm_free_netdev() for better clarity.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: ethernet: ixgbe: don't call devm_mdiobus_free()
Bartosz Golaszewski [Mon, 29 Jun 2020 12:03:38 +0000 (14:03 +0200)]
net: ethernet: ixgbe: don't call devm_mdiobus_free()

The idea behind devres is that the release callbacks are called if
probe fails. As we now check the return value of ixgbe_mii_bus_init(),
we can drop the call devm_mdiobus_free() in error path as the release
callback will be called automatically.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: ethernet: ixgbe: check the return value of ixgbe_mii_bus_init()
Bartosz Golaszewski [Mon, 29 Jun 2020 12:03:37 +0000 (14:03 +0200)]
net: ethernet: ixgbe: check the return value of ixgbe_mii_bus_init()

This function may fail. Check its return value and propagate the error
code.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agocxgb4vf: configure ports accessible by the VF
Nirranjan Kirubaharan [Mon, 29 Jun 2020 11:55:13 +0000 (17:25 +0530)]
cxgb4vf: configure ports accessible by the VF

Find ports accessible by the VF, based on the index of the
mac address stored for the VF in the adapter. If no mac address
is stored for the VF, use the port mask provided by firmware.

Signed-off-by: Nirranjan Kirubaharan <nirranjan@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'net-qed-qede-license-cleanup'
David S. Miller [Tue, 30 Jun 2020 22:51:40 +0000 (15:51 -0700)]
Merge branch 'net-qed-qede-license-cleanup'

Alexander Lobakin says:

====================
net: qed/qede: license cleanup

QLogic QED drivers source code is dual licensed under
GPL-2.0/BSD-3-Clause.

Correct already existing but wrong SPDX tags to match the actual
license.
Remove the license boilerplates and replace them with the correct
SPDX tag.
Update copyright years in all source files.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: qede: update copyright years
Alexander Lobakin [Mon, 29 Jun 2020 11:05:12 +0000 (14:05 +0300)]
net: qede: update copyright years

Set the actual copyright holder and years in all qede source files.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: qede: convert to SPDX License Identifiers
Alexander Lobakin [Mon, 29 Jun 2020 11:05:11 +0000 (14:05 +0300)]
net: qede: convert to SPDX License Identifiers

QLogic QED drivers source code is dual licensed under
GPL-2.0/BSD-3-Clause.
Remove all the boilerplates in the existing code and replace it with the
correct SPDX tag.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: qede: correct existing SPDX tags
Alexander Lobakin [Mon, 29 Jun 2020 11:05:10 +0000 (14:05 +0300)]
net: qede: correct existing SPDX tags

QLogic QED drivers source code is dual licensed under
GPL-2.0/BSD-3-Clause.
Correct already existing but wrong SPDX tags to match the actual
license.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: qed: update copyright years
Alexander Lobakin [Mon, 29 Jun 2020 11:05:09 +0000 (14:05 +0300)]
net: qed: update copyright years

Set the actual copyright holder and years in all qed source files.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: qed: convert to SPDX License Identifiers
Alexander Lobakin [Mon, 29 Jun 2020 11:05:08 +0000 (14:05 +0300)]
net: qed: convert to SPDX License Identifiers

QLogic QED drivers source code is dual licensed under
GPL-2.0/BSD-3-Clause.
Remove all the boilerplates in the existing code and replace it with the
correct SPDX tag.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: qed: correct existing SPDX tags
Alexander Lobakin [Mon, 29 Jun 2020 11:05:07 +0000 (14:05 +0300)]
net: qed: correct existing SPDX tags

QLogic QED drivers source code is dual licensed under
GPL-2.0/BSD-3-Clause.
Correct already existing but wrong SPDX tags to match the actual
license.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agotcp: call tcp_ack_tstamp() when not fully acked
Yousuk Seung [Tue, 30 Jun 2020 16:49:33 +0000 (09:49 -0700)]
tcp: call tcp_ack_tstamp() when not fully acked

When skb is coalesced tcp_ack_tstamp() still needs to be called when not
fully acked in tcp_clean_rtx_queue(), otherwise SCM_TSTAMP_ACK
timestamps may never be fired. Since the original patch series had
dependent commits, this patch fixes the issue instead of reverting by
restoring calls to tcp_ack_tstamp() when skb is not fully acked.

Fixes: fdb7eb21ddd3 ("tcp: stamp SCM_TSTAMP_ACK later in tcp_clean_rtx_queue()")
Signed-off-by: Yousuk Seung <ysseung@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/mlx5e: fix memory leak of tls
Colin Ian King [Tue, 30 Jun 2020 15:16:46 +0000 (16:16 +0100)]
net/mlx5e: fix memory leak of tls

The error return path when create_singlethread_workqueue fails currently
does not kfree tls and leads to a memory leak. Fix this by kfree'ing
tls before returning -ENOMEM.

Addresses-Coverity: ("Resource leak")
Fixes: 1182f3659357 ("net/mlx5e: kTLS, Add kTLS RX HW offload support")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomptcp: do nonce initialization at subflow creation time
Paolo Abeni [Tue, 30 Jun 2020 14:38:26 +0000 (16:38 +0200)]
mptcp: do nonce initialization at subflow creation time

This clean-up the code a bit, reduces the number of
used hooks and indirect call requested, and allow
better error reporting from __mptcp_subflow_connect()

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/tls: fix sign extension issue when left shifting u16 value
Colin Ian King [Tue, 30 Jun 2020 14:27:46 +0000 (15:27 +0100)]
net/tls: fix sign extension issue when left shifting u16 value

Left shifting the u16 value promotes it to a int and then it
gets sign extended to a u64.  If len << 16 is greater than 0x7fffffff
then the upper bits get set to 1 because of the implicit sign extension.
Fix this by casting len to u64 before shifting it.

Addresses-Coverity: ("integer handling issues")
Fixes: ed9b7646b06a ("net/tls: Add asynchronous resync")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'sfc-prerequisites-for-EF100-driver-part-2'
David S. Miller [Tue, 30 Jun 2020 20:09:10 +0000 (13:09 -0700)]
Merge branch 'sfc-prerequisites-for-EF100-driver-part-2'

Edward Cree says:

====================
sfc: prerequisites for EF100 driver, part 2

Continuing on from [1], this series further prepares the sfc codebase
 for the introduction of the EF100 driver.

[1]: https://lore.kernel.org/netdev/20200629.173812.1532344417590172093.davem@davemloft.net/T/
====================

Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: don't call tx_remove if there isn't one
Edward Cree [Tue, 30 Jun 2020 12:15:34 +0000 (13:15 +0100)]
sfc: don't call tx_remove if there isn't one

EF100 won't have an efx->type->tx_remove method, because there's
 nothing for it to do.  So make the call conditional.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise initialisation of efx->vport_id
Edward Cree [Tue, 30 Jun 2020 12:15:10 +0000 (13:15 +0100)]
sfc: commonise initialisation of efx->vport_id

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise efx->[rt]xq_entries initialisation
Edward Cree [Tue, 30 Jun 2020 12:14:45 +0000 (13:14 +0100)]
sfc: commonise efx->[rt]xq_entries initialisation

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: initialise max_[tx_]channels in efx_init_channels()
Edward Cree [Tue, 30 Jun 2020 12:14:13 +0000 (13:14 +0100)]
sfc: initialise max_[tx_]channels in efx_init_channels()

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: move definition of EFX_MC_STATS_GENERATION_INVALID
Edward Cree [Tue, 30 Jun 2020 12:13:47 +0000 (13:13 +0100)]
sfc: move definition of EFX_MC_STATS_GENERATION_INVALID

Saves a whole #include from nic.c.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: factor out efx_tx_tso_header_length() and understand encapsulation
Edward Cree [Tue, 30 Jun 2020 12:13:15 +0000 (13:13 +0100)]
sfc: factor out efx_tx_tso_header_length() and understand encapsulation

ef100 will need to check this against NIC limits.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: remove duplicate declaration of efx_enqueue_skb_tso()
Edward Cree [Tue, 30 Jun 2020 12:12:49 +0000 (13:12 +0100)]
sfc: remove duplicate declaration of efx_enqueue_skb_tso()

Define it in nic_common.h, even though the ef100 driver will have a
 different implementation backing it (actually a WARN_ON_ONCE as it
 should never get called by ef100.  But it needs to still exist because
 common TX path code references it).

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise TSO fallback code
Edward Cree [Tue, 30 Jun 2020 12:12:17 +0000 (13:12 +0100)]
sfc: commonise TSO fallback code

ef100 will need this if it gets GSO skbs it can't handle (e.g. too long
 header length).

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise efx_sync_rx_buffer()
Edward Cree [Tue, 30 Jun 2020 12:11:52 +0000 (13:11 +0100)]
sfc: commonise efx_sync_rx_buffer()

The ef100 RX path will also need to DMA-sync RX buffers.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise some MAC configuration code
Edward Cree [Tue, 30 Jun 2020 12:11:35 +0000 (13:11 +0100)]
sfc: commonise some MAC configuration code

Refactor it a little as we go, and introduce efx_mcdi_set_mtu() which we
 will later use for ef100 to change MTU without touching other MAC settings.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise miscellaneous efx functions
Edward Cree [Tue, 30 Jun 2020 12:03:47 +0000 (13:03 +0100)]
sfc: commonise miscellaneous efx functions

Various left-over bits and pieces from efx.c that are needed by ef100.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: add missing licence info to mcdi_filters.c
Edward Cree [Tue, 30 Jun 2020 12:03:21 +0000 (13:03 +0100)]
sfc: add missing licence info to mcdi_filters.c

Both the licence notice and the SPDX tag were missing from this file.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise MCDI MAC stats handling
Edward Cree [Tue, 30 Jun 2020 12:02:56 +0000 (13:02 +0100)]
sfc: commonise MCDI MAC stats handling

Most of it was already declared in mcdi_port_common.h, so just move the
 implementations to mcdi_port_common.c.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: move NIC-specific mcdi_port declarations out of common header
Edward Cree [Tue, 30 Jun 2020 12:02:24 +0000 (13:02 +0100)]
sfc: move NIC-specific mcdi_port declarations out of common header

These functions are implemented in mcdi_port.c, which will not be linked
 into the EF100 driver; thus their prototypes should not be visible in
 common header files.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'Convert-Broadcom-SF2-to-mac_link_up-resolved-state'
David S. Miller [Tue, 30 Jun 2020 20:05:10 +0000 (13:05 -0700)]
Merge branch 'Convert-Broadcom-SF2-to-mac_link_up-resolved-state'

Russell King says:

====================
Convert Broadcom SF2 to mac_link_up() resolved state

Convert Broadcom SF2 DSA support to use the newly provided resolved
link state via mac_link_up() rather than using the state in
mac_config().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa/bcm_sf2: move pause mode setting into mac_link_up()
Russell King [Tue, 30 Jun 2020 10:28:18 +0000 (11:28 +0100)]
net: dsa/bcm_sf2: move pause mode setting into mac_link_up()

bcm_sf2 only appears to support pause modes on RGMII interfaces (the
enable bits are in the RGMII control register.)  Setup the pause modes
for RGMII connections.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa/bcm_sf2: move speed/duplex forcing to mac_link_up()
Russell King [Tue, 30 Jun 2020 10:28:13 +0000 (11:28 +0100)]
net: dsa/bcm_sf2: move speed/duplex forcing to mac_link_up()

Convert the bcm_sf2 to use the finalised speed and duplex in its
mac_link_up() call rather than the parameters in mac_config().

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa/bcm_sf2: fix incorrect usage of state->link
Russell King [Tue, 30 Jun 2020 10:28:08 +0000 (11:28 +0100)]
net: dsa/bcm_sf2: fix incorrect usage of state->link

state->link has never been valid in mac_config() implementations -
while it may be correct in some calls, it is not true that it can be
relied upon.

Fix bcm_sf2 to use the correct method of handling forced link status.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'Convert-Broadcom-B53-to-mac_link_up-resolved-state'
David S. Miller [Tue, 30 Jun 2020 20:03:27 +0000 (13:03 -0700)]
Merge branch 'Convert-Broadcom-B53-to-mac_link_up-resolved-state'

Russell King says:

====================
Convert Broadcom B53 to mac_link_up() resolved state

These two patches update the Broadcom B53 DSA support to use the newly
provided resolved link state via mac_link_up() rather than using the
state in mac_config().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa/b53: use resolved link config in mac_link_up()
Russell King [Tue, 30 Jun 2020 10:25:06 +0000 (11:25 +0100)]
net: dsa/b53: use resolved link config in mac_link_up()

Convert the B53 driver to use the finalised link parameters in
mac_link_up() rather than the parameters in mac_config(). This is
just a matter of moving the call to b53_force_port_config().

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa/b53: change b53_force_port_config() pause argument
Russell King [Tue, 30 Jun 2020 10:25:00 +0000 (11:25 +0100)]
net: dsa/b53: change b53_force_port_config() pause argument

Replace the b53_force_port_config() pause argument, which is based on
phylink's MLO_PAUSE_* definitions, to use a pair of booleans.  This
will allow us to move b53_force_port_config() from
b53_phylink_mac_config() to b53_phylink_mac_link_up().

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge tag 'batadv-next-for-davem-20200630' of git://git.open-mesh.org/linux-merge
David S. Miller [Tue, 30 Jun 2020 19:59:15 +0000 (12:59 -0700)]
Merge tag 'batadv-next-for-davem-20200630' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
This feature/cleanup patchset includes the following patches:

 - bump version strings, by Simon Wunderlich

 - update mailing list URL, by Sven Eckelmann

 - fix typos and grammar in documentation, by Sven Eckelmann

 - introduce a configurable per interface hop penalty,
   by Linus Luessing
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa: Improve subordinate PHY error message
Florian Fainelli [Tue, 30 Jun 2020 04:43:13 +0000 (21:43 -0700)]
net: dsa: Improve subordinate PHY error message

It is not very informative to know the DSA master device when a
subordinate network device fails to get its PHY setup. Provide the
device name and capitalize PHY while we are it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agohinic: remove unused but set variable
Luo bin [Tue, 30 Jun 2020 02:30:34 +0000 (10:30 +0800)]
hinic: remove unused but set variable

remove unused but set variable to avoid auto build test WARNING

Signed-off-by: Luo bin <luobin9@huawei.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next...
David S. Miller [Tue, 30 Jun 2020 19:34:35 +0000 (12:34 -0700)]
Merge branch '1GbE' of git://git./linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
1GbE Intel Wired LAN Driver Updates 2020-06-29

This series contains updates to only the igc driver.

Sasha added Energy Efficient Ethernet (EEE) support and Latency Tolerance
Reporting (LTR) support for the igc driver. Added Low Power Idle (LPI)
counters and cleaned up unused TCP segmentation counters. Removed
igc_power_down_link() and call igc_power_down_phy_copper_base()
directly. Removed unneeded copper media check.

Andre cleaned up timestamping by removing un-supported features and
duplicate code for i225. Fixed the timestamp check on the proper flag
instead of the skb for pending transmit timestamps. Refactored
igc_ptp_set_timestamp_mode() to simply the flow.

v2: Removed the log message in patch 1 as suggested by David Miller.
    Note: The locking issue Jakub Kicinski saw in patch 5, currently
    exists in the current net-next tree, so Andre will resolve the
    locking issue in a follow-on patch.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoigc: Remove checking media type during MAC initialization
Sasha Neftin [Wed, 17 Jun 2020 12:01:31 +0000 (15:01 +0300)]
igc: Remove checking media type during MAC initialization

i225 device support only copper mode.
There is no point to check media type in the
igc_config_fc_after_link_up() method.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoigc: Remove unneeded check for copper media type
Sasha Neftin [Wed, 10 Jun 2020 12:43:08 +0000 (15:43 +0300)]
igc: Remove unneeded check for copper media type

PHY of the i225 device support only copper mode.
There is no point to check media type in the
igc_power_up_link() method.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoigc: Refactor the igc_power_down_link()
Sasha Neftin [Mon, 8 Jun 2020 15:49:39 +0000 (18:49 +0300)]
igc: Refactor the igc_power_down_link()

Currently the implementation of igc_power_down_link()
method was just calling igc_power_down_phy_copper_base()
method.
We can just call igc_power_down_phy_copper_base()
method directly.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoigc: Remove TCP segmentation TX fail counter
Sasha Neftin [Sun, 7 Jun 2020 08:51:27 +0000 (11:51 +0300)]
igc: Remove TCP segmentation TX fail counter

TCP segmentation TX context fail counter is not
applicable for i225 devices.
This patch comes to clean up this counter.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown<aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoigc: Add LPI counters
Sasha Neftin [Thu, 4 Jun 2020 11:25:16 +0000 (14:25 +0300)]
igc: Add LPI counters

Add EEE TX LPI and EEE RX LPI counters. A EEE TX LPI event
occurs when the transmitter enters EEE (IEEE 802.3az) LPI
state. A EEE RX LPI event occurs when the receiver detect
link partner entry into EEE(IEEE 802.3az) LPI state.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoigc: Fix Rx timestamp disabling
Andre Guedes [Thu, 4 Jun 2020 00:01:05 +0000 (17:01 -0700)]
igc: Fix Rx timestamp disabling

When Rx timestamping is enabled, we set the timestamp bit in SRRCTL
register for each queue, but we don't clear it when disabling. This
patch fixes igc_ptp_disable_rx_timestamp() accordingly.

Also, this patch gets rid of igc_ptp_enable_tstamp_rxqueue() and
igc_ptp_enable_tstamp_all_rxqueues() and move their logic into
igc_ptp_enable_rx_timestamp() to keep the enable and disable
helpers symmetric.

Signed-off-by: Andre Guedes <andre.guedes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoigc: Refactor igc_ptp_set_timestamp_mode()
Andre Guedes [Thu, 4 Jun 2020 00:01:04 +0000 (17:01 -0700)]
igc: Refactor igc_ptp_set_timestamp_mode()

Current igc_ptp_set_timestamp_mode() logic is a bit tangled since it
handles many different hardware configurations in one single place,
making it harder to follow. This patch untangles that code by breaking
it into helper functions.

Quick note about the hw->mac.type check which was removed in this
refactoring: this check it not really needed since igc_i225 is the only
type supported by the IGC driver.

Signed-off-by: Andre Guedes <andre.guedes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoigc: Remove UDP filter setup in PTP code
Andre Guedes [Thu, 4 Jun 2020 00:01:03 +0000 (17:01 -0700)]
igc: Remove UDP filter setup in PTP code

As implemented in igc_ethtool_get_ts_info(), igc only supports HWTSTAMP_
FILTER_ALL so any HWTSTAMP_FILTER_* option the user may set falls back to
HWTSTAMP_FILTER_ALL.

HWTSTAMP_FILTER_ALL is implemented via Rx Time Sync Control (TSYNCRXCTL)
configuration which timestamps all incoming packets. Configuring a
UDP filter, in addition to TSYNCRXCTL, doesn't add much so this patch
removes that code. It also takes this opportunity to remove some
non-applicable comments.

Signed-off-by: Andre Guedes <andre.guedes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoigc: Check __IGC_PTP_TX_IN_PROGRESS instead of ptp_tx_skb
Andre Guedes [Thu, 4 Jun 2020 00:01:02 +0000 (17:01 -0700)]
igc: Check __IGC_PTP_TX_IN_PROGRESS instead of ptp_tx_skb

The __IGC_PTP_TX_IN_PROGRESS flag indicates we have a pending Tx
timestamp. In some places, instead of checking that flag, we check
adapter->ptp_tx_skb. This patch fixes those places to use the flag.

Quick note about igc_ptp_tx_hwtstamp() change: when that function is
called, adapter->ptp_tx_skb is expected to be valid always so we
WARN_ON_ONCE() in case it is not.

Quick note about igc_ptp_suspend() change: when suspending, we don't
really need to check if there is a pending timestamp. We can simply
clear it unconditionally.

Signed-off-by: Andre Guedes <andre.guedes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoigc: Remove duplicate code in Tx timestamp handling
Andre Guedes [Thu, 4 Jun 2020 00:01:01 +0000 (17:01 -0700)]
igc: Remove duplicate code in Tx timestamp handling

The functions igc_ptp_tx_hang() and igc_ptp_tx_work() have duplicate
code which handles Tx timestamp timeouts. This patch does a trivial
refactoring by moving that code to its own function and reusing it.

Signed-off-by: Andre Guedes <andre.guedes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoigc: Clean up Rx timestamping logic
Andre Guedes [Thu, 4 Jun 2020 00:01:00 +0000 (17:01 -0700)]
igc: Clean up Rx timestamping logic

Differently from I210, I225 doesn't report Rx timestamps via the TS bit
Rx descriptor + RXSTMPL/RXSTMPH registers mechanism. Rx timestamps are
reported in the packet buffer only, which is implemented by igc_ptp_rx_
pktstamp(). So this patch removes igc_ptp_rx_rgtstamp() and all code
related to it, copied from igb driver.

Signed-off-by: Andre Guedes <andre.guedes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoigc: Add initial LTR support
Sasha Neftin [Tue, 2 Jun 2020 07:50:47 +0000 (10:50 +0300)]
igc: Add initial LTR support

The LTR message on the PCIe inform the requested latency
on which the PCIe must become active to the downstream
PCIe port of the system.
This patch provide recommended LTR parameters by i225
specification.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoMerge branch 'Add-ethtool-extended-link-state'
David S. Miller [Tue, 30 Jun 2020 00:45:02 +0000 (17:45 -0700)]
Merge branch 'Add-ethtool-extended-link-state'

Ido Schimmel says:

====================
Add ethtool extended link state

Amit says:

Currently, device drivers can only indicate to user space if the network
link is up or down, without additional information.

This patch set provides an infrastructure that allows these drivers to
expose more information to user space about the link state. The
information can save users' time when trying to understand why a link is
not operationally up, for example.

The above is achieved by extending the existing ethtool LINKSTATE_GET
command with attributes that carry the extended state.

For example, no link due to missing cable:

$ ethtool ethX
...
Link detected: no (No cable)

Beside the general extended state, drivers can pass additional
information about the link state using the sub-state field. For example:

$ ethtool ethX
...
Link detected: no (Autoneg, No partner detected)

In the future the infrastructure can be extended - for example - to
allow PHY drivers to report whether a downshift to a lower speed
occurred. Something like:

$ ethtool ethX
...
Link detected: yes (downshifted)

Patch set overview:

Patches #1-#3 move mlxsw ethtool code to a separate file
Patches #4-#5 add the ethtool infrastructure for extended link state
Patches #6-#7 add support of extended link state in the mlxsw driver
Patches #8-#10 add test cases

Changes since v1:

* In documentation, show ETHTOOL_LINK_EXT_STATE_* and
  ETHTOOL_LINK_EXT_SUBSTATE_* constants instead of user-space strings
* Add `_CI_` to cable_issue substates to be consistent with
  other substates
* Keep the commit messages within 75 columns
* Use u8 variable for __link_ext_substate
* Document the meaning of -ENODATA in get_link_ext_state() callback
  description
* Do not zero data->link_ext_state_provided after getting an error
* Use `ret` variable for error value

Changes since RFC:

* Move documentation patch before ethtool patch
* Add nla_total_size() instead of sizeof() directly
* Return an error code from linkstate_get_ext_state()
* Remove SHORTED_CABLE, add CABLE_TEST_FAILURE instead
* Check if the interface is administratively up before setting ext_state
* Document all sub-states
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests: forwarding: Add tests for ethtool extended state
Amit Cohen [Mon, 29 Jun 2020 20:46:21 +0000 (23:46 +0300)]
selftests: forwarding: Add tests for ethtool extended state

Add tests to check ethtool report about extended state.
The tests configure several states and verify that the correct extended
state is reported by ethtool.

Check extended state with substate (Autoneg) and extended state without
substate (No cable).

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests: forwarding: forwarding.config.sample: Add port with no cable connected
Amit Cohen [Mon, 29 Jun 2020 20:46:20 +0000 (23:46 +0300)]
selftests: forwarding: forwarding.config.sample: Add port with no cable connected

Add NETIF_NO_CABLE port to tests topology.

The port can also be declared as an environment variable and tests can be
run like that:
NETIF_NO_CABLE=eth9 ./test.sh eth{1..8}

The NETIF_NO_CABLE port will be used by ethtool_extended_state test.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests: forwarding: ethtool: Move different_speeds_get() to ethtool_lib
Amit Cohen [Mon, 29 Jun 2020 20:46:19 +0000 (23:46 +0300)]
selftests: forwarding: ethtool: Move different_speeds_get() to ethtool_lib

Currently different_speeds_get() is used only by ethtool.sh tests.
The function can be useful for another tests that check ethtool
configurations.

Move the function to ethtool_lib in order to allow other tests to use
it.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomlxsw: spectrum_ethtool: Add link extended state
Amit Cohen [Mon, 29 Jun 2020 20:46:18 +0000 (23:46 +0300)]
mlxsw: spectrum_ethtool: Add link extended state

Implement .get_down_ext_state() as part of ethtool_ops.
Query link down reason from PDDR register and convert it to ethtool
link_ext_state.

In case that more information than common link_ext_state is provided,
fill link_ext_substate also with the appropriate value.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomlxsw: reg: Port Diagnostics Database Register
Amit Cohen [Mon, 29 Jun 2020 20:46:17 +0000 (23:46 +0300)]
mlxsw: reg: Port Diagnostics Database Register

The PDDR register enables to read the Phy debug database.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoethtool: Add link extended state
Amit Cohen [Mon, 29 Jun 2020 20:46:16 +0000 (23:46 +0300)]
ethtool: Add link extended state

Currently, drivers can only tell whether the link is up/down using
LINKSTATE_GET, but no additional information is given.

Add attributes to LINKSTATE_GET command in order to allow drivers
to expose the user more information in addition to link state to ease
the debug process, for example, reason for link down state.

Extended state consists of two attributes - link_ext_state and
link_ext_substate. The idea is to avoid 'vendor specific' states in order
to prevent drivers to use specific link_ext_state that can be in the future
common link_ext_state.

The substates allows drivers to add more information to the common
link_ext_state. For example, vendor can expose 'Autoneg' as link_ext_state
and add 'No partner detected during force mode' as link_ext_substate.

If a driver cannot pinpoint the extended state with the substate
accuracy, it is free to expose only the extended state and omit the
substate attribute.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoDocumentation: networking: ethtool-netlink: Add link extended state
Amit Cohen [Mon, 29 Jun 2020 20:46:15 +0000 (23:46 +0300)]
Documentation: networking: ethtool-netlink: Add link extended state

Add link extended state attributes.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomlxsw: spectrum_ethtool: Move mlxsw_sp_port_type_speed_ops structs
Amit Cohen [Mon, 29 Jun 2020 20:46:14 +0000 (23:46 +0300)]
mlxsw: spectrum_ethtool: Move mlxsw_sp_port_type_speed_ops structs

Move mlxsw_sp1_port_type_speed_ops and mlxsw_sp2_port_type_speed_ops
with the relevant code from spectrum.c to spectrum_ethtool.c.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomlxsw: Move ethtool_ops to spectrum_ethtool.c
Amit Cohen [Mon, 29 Jun 2020 20:46:13 +0000 (23:46 +0300)]
mlxsw: Move ethtool_ops to spectrum_ethtool.c

Add spectrum_ethtool.c file for ethtool code.
Move ethtool_ops and the relevant code from spectrum.c to
spectrum_ethtool.c.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomlxsw: spectrum_dcb: Rename mlxsw_sp_port_headroom_set()
Amit Cohen [Mon, 29 Jun 2020 20:46:12 +0000 (23:46 +0300)]
mlxsw: spectrum_dcb: Rename mlxsw_sp_port_headroom_set()

mlxsw_sp_port_headroom_set() is defined twice - in spectrum.c and in
spectrum_dcb.c, with different arguments and different implementation
but the name is same.

Rename mlxsw_sp_port_headroom_set() to mlxsw_sp_port_headroom_ets_set()
in order to allow using the second function in several files, and not
only as static function in spectrum.c.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoigc: Add initial EEE support
Sasha Neftin [Wed, 27 May 2020 20:51:32 +0000 (13:51 -0700)]
igc: Add initial EEE support

IEEE802.3az-2010 Energy Efficient Ethernet has been
approved as standard (September 2010) and the driver
can enable and disable it via ethtool.
Disable the feature by default on parts which support it.
Add enable/disable eee options.
tx-lpi, tx-timer and advertise not supported yet.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Reviewed-by: Andre Guedes <andre.guedes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
4 years agoMerge branch 'dpaa2-eth-send-a-scatter-gather-FD-instead-of-realloc-ing'
David S. Miller [Tue, 30 Jun 2020 00:42:48 +0000 (17:42 -0700)]
Merge branch 'dpaa2-eth-send-a-scatter-gather-FD-instead-of-realloc-ing'

Ioana Ciornei says:

====================
dpaa2-eth: send a scatter-gather FD instead of realloc-ing

This patch set changes the behaviour in case the Tx path is confroted
with an SKB with insufficient headroom for our hardware necessities (SW
annotation area). In the first patch, instead of realloc-ing the SKB we
now send a S/G frames descriptor while the second one adds a new
software held counter to account for for these types of frames.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodpaa2-eth: add software counter for Tx frames converted to S/G
Ioana Ciornei [Mon, 29 Jun 2020 18:47:12 +0000 (21:47 +0300)]
dpaa2-eth: add software counter for Tx frames converted to S/G

With the previous commit, in case of insufficient SKB headroom on the Tx
path instead of reallocing the SKB we now send a S/G frame descriptor.
Export the number of occurences of this case as a per CPU counter (in
debugfs) and a total number in the ethtool statistics - "tx converted sg
frames'.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodpaa2-eth: send a scatter-gather FD instead of realloc-ing
Ioana Ciornei [Mon, 29 Jun 2020 18:47:11 +0000 (21:47 +0300)]
dpaa2-eth: send a scatter-gather FD instead of realloc-ing

Instead of realloc-ing the skb on the Tx path when the provided headroom
is smaller than the HW requirements, create a Scatter/Gather frame
descriptor with only one entry.

Remove the '[drv] tx realloc frames' counter exposed previously through
ethtool since it is no longer used.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'sfc-prerequisites-for-EF100-driver-part-1'
David S. Miller [Tue, 30 Jun 2020 00:37:49 +0000 (17:37 -0700)]
Merge branch 'sfc-prerequisites-for-EF100-driver-part-1'

Edward Cree says:

====================
sfc: prerequisites for EF100 driver, part 1

This continues the work started by Alex Maftei <amaftei@solarflare.com>
 in the series "sfc: code refactoring", "sfc: more code refactoring",
 "sfc: even more code refactoring" and "sfc: refactor mcdi filtering
 code", to prepare for a new driver which will share much of the code
 to support the new EF100 family of Solarflare/Xilinx NICs.
After this series, there will be approximately two more of these
 'prerequisites' series, followed by the sfc_ef100 driver itself.

v2: fix reverse xmas tree in patch 5.  (Left the cases in patches 7,
 9 and 14 alone as those are all in pure movement of existing code.)
====================

Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: extend common GRO interface to support CHECKSUM_COMPLETE
Edward Cree [Mon, 29 Jun 2020 13:36:56 +0000 (14:36 +0100)]
sfc: extend common GRO interface to support CHECKSUM_COMPLETE

EF100 will use CHECKSUM_COMPLETE, but will also make use of
 efx_rx_packet_gro(), thus needs to be able to pass the checksum value
 into that function.
Drivers for older NICs pass in a csum of 0 to get the old semantics (use
 the RX flags for CHECKSUM_UNNECESSARY marking).

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise ARFS handling
Edward Cree [Mon, 29 Jun 2020 13:36:33 +0000 (14:36 +0100)]
sfc: commonise ARFS handling

EF100 will use the same approach to ARFS as EF10.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise drain event handling
Edward Cree [Mon, 29 Jun 2020 13:39:32 +0000 (14:39 +0100)]
sfc: commonise drain event handling

Avoids a call from generic MCDI code into ef10.c.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise PCI error handlers
Edward Cree [Mon, 29 Jun 2020 13:35:41 +0000 (14:35 +0100)]
sfc: commonise PCI error handlers

EF100 will use the same mechanisms for PCI error recovery.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: track which BAR is mapped
Edward Cree [Mon, 29 Jun 2020 13:35:33 +0000 (14:35 +0100)]
sfc: track which BAR is mapped

EF100 needs to map multiple BARs (sequentially, not concurrently) in
 order to read the Function Control Window during probe.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise FC advertising
Edward Cree [Mon, 29 Jun 2020 13:35:25 +0000 (14:35 +0100)]
sfc: commonise FC advertising

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise other ethtool bits
Edward Cree [Mon, 29 Jun 2020 13:35:15 +0000 (14:35 +0100)]
sfc: commonise other ethtool bits

A few more ethtool handlers which EF100 will share.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise ethtool NFC and RXFH/RSS functions
Edward Cree [Mon, 29 Jun 2020 13:35:05 +0000 (14:35 +0100)]
sfc: commonise ethtool NFC and RXFH/RSS functions

EF100 will share EF10's model of filtering, hashing and spreading.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: commonise ethtool link handling functions
Edward Cree [Mon, 29 Jun 2020 13:34:50 +0000 (14:34 +0100)]
sfc: commonise ethtool link handling functions

Link speeds, FEC, and autonegotiation are all things EF100 will share.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: split up nic.h
Edward Cree [Mon, 29 Jun 2020 13:34:39 +0000 (14:34 +0100)]
sfc: split up nic.h

The new nic_common.h contains the inlines for NIC-type function dispatch,
 declarations for NIC-generic functions in nic.c, and other similar NIC-
 generic functionality.  Retained in nic.h are NIC-specific declarations
 such as the siena and ef10 nic_data structs and various farch functions.

The EF100 driver will thus include nic_common.h but not nic.h.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: refactor EF10 stats handling
Edward Cree [Mon, 29 Jun 2020 13:34:20 +0000 (14:34 +0100)]
sfc: refactor EF10 stats handling

Separate the generation-count handling from the format conversion, to
 make it easier to re-use both for EF100.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: don't try to create more channels than we can have VIs
Edward Cree [Mon, 29 Jun 2020 13:33:44 +0000 (14:33 +0100)]
sfc: don't try to create more channels than we can have VIs

Calculate efx->max_vis at probe time, and check against it in
 efx_allocate_msix_channels() when considering whether to create XDP TX
 channels.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: extend bitfield macros up to POPULATE_DWORD_13
Edward Cree [Mon, 29 Jun 2020 13:33:03 +0000 (14:33 +0100)]
sfc: extend bitfield macros up to POPULATE_DWORD_13

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: determine flag word automatically in efx_has_cap()
Edward Cree [Mon, 29 Jun 2020 13:32:46 +0000 (14:32 +0100)]
sfc: determine flag word automatically in efx_has_cap()

Now that we have an _OFST definition for each individual flag bit,
 callers of efx_has_cap() don't need to specify which flag word it's
 in; we can just use the flag name directly in MCDI_CAPABILITY_OFST.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: update MCDI protocol headers
Edward Cree [Mon, 29 Jun 2020 13:32:31 +0000 (14:32 +0100)]
sfc: update MCDI protocol headers

The script used to generate these now includes _OFST definitions for
 flags, to identify the containing flag word.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet:qos: police action offloading parameter 'burst' change to the original value
Po Liu [Mon, 29 Jun 2020 06:54:16 +0000 (14:54 +0800)]
net:qos: police action offloading parameter 'burst' change to the original value

Since 'tcfp_burst' with TICK factor, driver side always need to recover
it to the original value, this patch moves the generic calculation and
recover to the 'burst' original value before offloading to device driver.

Signed-off-by: Po Liu <po.liu@nxp.com>
Acked-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'MPTCP-improve-fallback-to-TCP'
David S. Miller [Tue, 30 Jun 2020 00:29:38 +0000 (17:29 -0700)]
Merge branch 'MPTCP-improve-fallback-to-TCP'

Davide Caratti says:

====================
MPTCP: improve fallback to TCP

there are situations where MPTCP sockets should fall-back to regular TCP:
this series reworks the fallback code to pursue the following goals:

1) cleanup the non fallback code, removing most of 'if (<fallback>)' in
   the data path
2) improve performance for non-fallback sockets, avoiding locks in poll()

further work will also leverage on this changes to achieve:

a) more consistent behavior of gestockopt()/setsockopt() on passive sockets
   after fallback
b) support for "infinite maps" as per RFC8684, section 3.7

the series is made of the following items:

- patch 1 lets sendmsg() / recvmsg() / poll() use the main socket also
  after fallback
- patch 2 fixes 'simultaneous connect' scenario after fallback. The
  problem was present also before the rework, but the fix is much easier
  to implement after patch 1
- patch 3, 4, 5 are clean-ups for code that is no more needed after the
  fallback rework
- patch 6 fixes a race condition between close() and poll(). The problem
  was theoretically present before the rework, but it became almost
  systematic after patch 1
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomptcp: close poll() races
Paolo Abeni [Mon, 29 Jun 2020 20:26:25 +0000 (22:26 +0200)]
mptcp: close poll() races

mptcp_poll always return POLLOUT for unblocking
connect(), ensure that the socket is a suitable
state.
The MPTCP_DATA_READY bit is never cleared on accept:
ensure we don't leave mptcp_accept() with an empty
accept queue and such bit set.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomptcp: __mptcp_tcp_fallback() returns a struct sock
Paolo Abeni [Mon, 29 Jun 2020 20:26:24 +0000 (22:26 +0200)]
mptcp: __mptcp_tcp_fallback() returns a struct sock

Currently __mptcp_tcp_fallback() always return NULL
on incoming connections, because MPTCP does not create
the additional socket for the first subflow.
Since the previous commit no __mptcp_tcp_fallback()
caller needs a struct socket, so let __mptcp_tcp_fallback()
return the first subflow sock and cope correctly even with
incoming connections.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomptcp: create first subflow at msk creation time
Paolo Abeni [Mon, 29 Jun 2020 20:26:23 +0000 (22:26 +0200)]
mptcp: create first subflow at msk creation time

This cleans the code a bit and makes the behavior more consistent.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomptcp: check for plain TCP sock at accept time
Paolo Abeni [Mon, 29 Jun 2020 20:26:22 +0000 (22:26 +0200)]
mptcp: check for plain TCP sock at accept time

This cleanup the code a bit and avoid corrupted states
on weird syscall sequence (accept(), connect()).

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomptcp: fallback in case of simultaneous connect
Davide Caratti [Mon, 29 Jun 2020 20:26:21 +0000 (22:26 +0200)]
mptcp: fallback in case of simultaneous connect

when a MPTCP client tries to connect to itself, tcp_finish_connect() is
never reached. Because of this, depending on the socket current state,
multiple faulty behaviours can be observed:

1) a WARN_ON() in subflow_data_ready() is hit
 WARNING: CPU: 2 PID: 882 at net/mptcp/subflow.c:911 subflow_data_ready+0x18b/0x230
 [...]
 CPU: 2 PID: 882 Comm: gh35 Not tainted 5.7.0+ #187
 [...]
 RIP: 0010:subflow_data_ready+0x18b/0x230
 [...]
 Call Trace:
  tcp_data_queue+0xd2f/0x4250
  tcp_rcv_state_process+0xb1c/0x49d3
  tcp_v4_do_rcv+0x2bc/0x790
  __release_sock+0x153/0x2d0
  release_sock+0x4f/0x170
  mptcp_shutdown+0x167/0x4e0
  __sys_shutdown+0xe6/0x180
  __x64_sys_shutdown+0x50/0x70
  do_syscall_64+0x9a/0x370
  entry_SYSCALL_64_after_hwframe+0x44/0xa9

2) client is stuck forever in mptcp_sendmsg() because the socket is not
   TCP_ESTABLISHED

 crash> bt 4847
 PID: 4847   TASK: ffff88814b2fb100  CPU: 1   COMMAND: "gh35"
  #0 [ffff8881376ff680] __schedule at ffffffff97248da4
  #1 [ffff8881376ff778] schedule at ffffffff9724a34f
  #2 [ffff8881376ff7a0] schedule_timeout at ffffffff97252ba0
  #3 [ffff8881376ff8a8] wait_woken at ffffffff958ab4ba
  #4 [ffff8881376ff940] sk_stream_wait_connect at ffffffff96c2d859
  #5 [ffff8881376ffa28] mptcp_sendmsg at ffffffff97207fca
  #6 [ffff8881376ffbc0] sock_sendmsg at ffffffff96be1b5b
  #7 [ffff8881376ffbe8] sock_write_iter at ffffffff96be1daa
  #8 [ffff8881376ffce8] new_sync_write at ffffffff95e5cb52
  #9 [ffff8881376ffe50] vfs_write at ffffffff95e6547f
 #10 [ffff8881376ffe90] ksys_write at ffffffff95e65d26
 #11 [ffff8881376fff28] do_syscall_64 at ffffffff956088ba
 #12 [ffff8881376fff50] entry_SYSCALL_64_after_hwframe at ffffffff9740008c
     RIP: 00007f126f6956ed  RSP: 00007ffc2a320278  RFLAGS: 00000217
     RAX: ffffffffffffffda  RBX: 0000000020000044  RCX: 00007f126f6956ed
     RDX: 0000000000000004  RSI: 00000000004007b8  RDI: 0000000000000003
     RBP: 00007ffc2a3202a0   R8: 0000000000400720   R9: 0000000000400720
     R10: 0000000000400720  R11: 0000000000000217  R12: 00000000004004b0
     R13: 00007ffc2a320380  R14: 0000000000000000  R15: 0000000000000000
     ORIG_RAX: 0000000000000001  CS: 0033  SS: 002b

3) tcpdump captures show that DSS is exchanged even when MP_CAPABLE handshake
   didn't complete.

 $ tcpdump -tnnr bad.pcap
 IP 127.0.0.1.20000 > 127.0.0.1.20000: Flags [S], seq 3208913911, win 65483, options [mss 65495,sackOK,TS val 3291706876 ecr 3291694721,nop,wscale 7,mptcp capable v1], length 0
 IP 127.0.0.1.20000 > 127.0.0.1.20000: Flags [S.], seq 3208913911, ack 3208913912, win 65483, options [mss 65495,sackOK,TS val 3291706876 ecr 3291706876,nop,wscale 7,mptcp capable v1], length 0
 IP 127.0.0.1.20000 > 127.0.0.1.20000: Flags [.], ack 1, win 512, options [nop,nop,TS val 3291706876 ecr 3291706876], length 0
 IP 127.0.0.1.20000 > 127.0.0.1.20000: Flags [F.], seq 1, ack 1, win 512, options [nop,nop,TS val 3291707876 ecr 3291706876,mptcp dss fin seq 0 subseq 0 len 1,nop,nop], length 0
 IP 127.0.0.1.20000 > 127.0.0.1.20000: Flags [.], ack 2, win 512, options [nop,nop,TS val 3291707876 ecr 3291707876], length 0

force a fallback to TCP in these cases, and adjust the main socket
state to avoid hanging in mptcp_sendmsg().

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/35
Reported-by: Christoph Paasch <cpaasch@apple.com>
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>