platform/kernel/linux-starfive.git
3 years agonet: mvpp2: set 802.3x GoP Flow Control mode
Stefan Chulski [Thu, 11 Feb 2021 10:49:01 +0000 (12:49 +0200)]
net: mvpp2: set 802.3x GoP Flow Control mode

This patch fix GMAC TX flow control autoneg.
Flow control autoneg wrongly were disabled with enabled TX
flow control.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add PPv23 RX FIFO flow control
Stefan Chulski [Thu, 11 Feb 2021 10:49:00 +0000 (12:49 +0200)]
net: mvpp2: add PPv23 RX FIFO flow control

New FIFO flow control feature was added in PPv23.
PPv2 FIFO polled by HW and trigger pause frame if FIFO
fill level is below threshold.
FIFO HW flow control enabled with CM3 RXQ&BM flow
control with ethtool.
Current  FIFO thresholds is:
9KB for port with maximum speed 10Gb/s port
4KB for port with maximum speed 5Gb/s port
2KB for port with maximum speed 1Gb/s port

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add BM protection underrun feature support
Stefan Chulski [Thu, 11 Feb 2021 10:48:59 +0000 (12:48 +0200)]
net: mvpp2: add BM protection underrun feature support

The PP2v23 hardware supports a feature allowing to double the
size of BPPI by decreasing number of pools from 16 to 8.
Increasing of BPPI size protect BM drop from BPPI underrun.
Underrun could occurred due to stress on DDR and as result slow buffer
transition from BPPE to BPPI.
New BPPI threshold recommended by spec is:
BPPI low threshold - 640 buffers
BPPI high threshold - 832 buffers
Supported only in PPv23.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add ethtool flow control configuration support
Stefan Chulski [Thu, 11 Feb 2021 10:48:58 +0000 (12:48 +0200)]
net: mvpp2: add ethtool flow control configuration support

This patch add ethtool flow control configuration support.

Tx flow control retrieved correctly by ethtool get function.
FW per port ethtool configuration capability added.

Patch also takes care about mtu change procedure, if PPv2 switch
BM pools during mtu change.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add RXQ flow control configurations
Stefan Chulski [Thu, 11 Feb 2021 10:48:57 +0000 (12:48 +0200)]
net: mvpp2: add RXQ flow control configurations

This patch adds RXQ flow control configurations.
Flow control disabled by default.
Minimum ring size limited to 1024 descriptors.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: enable global flow control
Stefan Chulski [Thu, 11 Feb 2021 10:48:56 +0000 (12:48 +0200)]
net: mvpp2: enable global flow control

This patch enables global flow control in FW and in the phylink validate mask.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add FCA RXQ non occupied descriptor threshold
Stefan Chulski [Thu, 11 Feb 2021 10:48:55 +0000 (12:48 +0200)]
net: mvpp2: add FCA RXQ non occupied descriptor threshold

The firmware needs to monitor the RX Non-occupied descriptor
bits for flow control to move to XOFF mode.
These bits need to be unmasked to be functional, but they will
not raise interrupts as we leave the RX exception summary
bit in MVPP2_ISR_RX_TX_MASK_REG clear.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add FCA periodic timer configurations
Stefan Chulski [Thu, 11 Feb 2021 10:48:54 +0000 (12:48 +0200)]
net: mvpp2: add FCA periodic timer configurations

Flow Control periodic timer would be used if port in
XOFF to transmit periodic XOFF frames.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: increase BM pool and RXQ size
Stefan Chulski [Thu, 11 Feb 2021 10:48:53 +0000 (12:48 +0200)]
net: mvpp2: increase BM pool and RXQ size

BM pool and RXQ size increased to support Firmware Flow Control.
Minimum depletion thresholds to support FC are 1024 buffers.
BM pool size increased to 2048 to have some 1024 buffers
space between depletion thresholds and BM pool size.

Jumbo frames require a 9888B buffer, so memory requirements
for data buffers increased from 7MB to 24MB.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add PPv23 version definition
Stefan Chulski [Thu, 11 Feb 2021 10:48:52 +0000 (12:48 +0200)]
net: mvpp2: add PPv23 version definition

This patch add PPv23 version definition.
PPv23 is new packet processor in CP115.
Everything that supported by PPv22, also supported by PPv23.
No functional changes in this stage.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: always compare hw-version vs MVPP21
Stefan Chulski [Thu, 11 Feb 2021 10:48:51 +0000 (12:48 +0200)]
net: mvpp2: always compare hw-version vs MVPP21

Currently we have PP2v1 and PP2v2 hw-versions, with some different
handlers depending upon condition hw_version = MVPP21/MVPP22.
In a future there will be also PP2v3. Let's use now the generic
"if equal/notEqual MVPP21" for all cases instead of "if MVPP22".

This patch does not change any functionality.
It is not intended to introduce PP2v3.
It just modifies MVPP21/MVPP22 check-condition
bringing it to generic and unified form correct for new-code
introducing and PP2v3 net-next generation.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: add CM3 SRAM memory map
Stefan Chulski [Thu, 11 Feb 2021 10:48:50 +0000 (12:48 +0200)]
net: mvpp2: add CM3 SRAM memory map

This patch adds CM3 memory map.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodts: marvell: add CM3 SRAM memory to cp11x ethernet device tree
Konstantin Porotchkin [Thu, 11 Feb 2021 10:48:49 +0000 (12:48 +0200)]
dts: marvell: add CM3 SRAM memory to cp11x ethernet device tree

CM3 SRAM address space will be used for Flow Control configuration.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodoc: marvell: add CM3 address space and PPv2.3 description
Stefan Chulski [Thu, 11 Feb 2021 10:48:48 +0000 (12:48 +0200)]
doc: marvell: add CM3 address space and PPv2.3 description

Patch adds CM3 address space and PPv2.3 description.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoxen/events: link interdomain events to associated xenbus device
Juergen Gross [Thu, 11 Feb 2021 10:16:13 +0000 (11:16 +0100)]
xen/events: link interdomain events to associated xenbus device

In order to support the possibility of per-device event channel
settings (e.g. lateeoi spurious event thresholds) add a xenbus device
pointer to struct irq_info() and modify the related event channel
binding interfaces to take the pointer to the xenbus device as a
parameter instead of the domain id of the other side.

While at it remove the stale prototype of bind_evtchn_to_irq_lateeoi().

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoxen/netback: fix spurious event detection for common event case
Juergen Gross [Thu, 11 Feb 2021 10:16:12 +0000 (11:16 +0100)]
xen/netback: fix spurious event detection for common event case

In case of a common event for rx and tx queue the event should be
regarded to be spurious if no rx and no tx requests are pending.

Unfortunately the condition for testing that is wrong causing to
decide a event being spurious if no rx OR no tx requests are
pending.

Fix that plus using local variables for rx/tx pending indicators in
order to split function calls and if condition.

Fixes: 23025393dbeb3b ("xen/netback: use lateeoi irq binding")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Wei Liu <wl@xen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: fib_notifier: don't return positive values on fib registration
Vlad Buslov [Thu, 11 Feb 2021 10:07:59 +0000 (12:07 +0200)]
net: fib_notifier: don't return positive values on fib registration

The function fib6_walk_continue() cannot return a positive value when
called from register_fib_notifier(), but ignoring causes static analyzer to
generate warnings in users of register_fib_notifier() that try to convert
returned error code to pointer with ERR_PTR(). Handle such case by
explicitly checking for positive error values and converting them to
-EINVAL in fib6_tables_dump().

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Suggested-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'mlx5-for-upstream-2021-02-10' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Thu, 11 Feb 2021 22:40:25 +0000 (14:40 -0800)]
Merge tag 'mlx5-for-upstream-2021-02-10' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-for-upstream-2021-02-10

Misc cleanups and trivial fixes for net-next

1) spelling mistakes
2) error path checks fixes
3) unused includes and struct fields cleanup
4) build error when MLX5_ESWITCH=no
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipconfig: avoid use-after-free in ic_close_devs
Vladimir Oltean [Wed, 10 Feb 2021 23:57:03 +0000 (01:57 +0200)]
net: ipconfig: avoid use-after-free in ic_close_devs

Due to the fact that ic_dev->dev is kept open in ic_close_dev, I had
thought that ic_dev will not be freed either. But that is not the case,
but instead "everybody dies" when ipconfig cleans up, and just the
net_device behind ic_dev->dev remains allocated but not ic_dev itself.

This is a problem because in ic_close_devs, for every net device that
we're about to close, we compare it against the list of lower interfaces
of ic_dev, to figure out whether we should close it or not. But since
ic_dev itself is subject to freeing, this means that at some point in
the middle of the list of ipconfig interfaces, ic_dev will have been
freed, and we would be still attempting to iterate through its list of
lower interfaces while checking whether to bring down the remaining
ipconfig interfaces.

There are multiple ways to avoid the use-after-free: we could delay
freeing ic_dev until the very end (outside the while loop). Or an even
simpler one: we can observe that we don't need ic_dev when iterating
through its lowers, only ic_dev->dev, structure which isn't ever freed.
So, by keeping ic_dev->dev in a variable assigned prior to freeing
ic_dev, we can avoid all use-after-free issues.

Fixes: 46acf7bdbc72 ("Revert "net: ipv4: handle DSA enabled master network devices"")
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agor8169: disable detection of bogus xid's 308/388
Heiner Kallweit [Wed, 10 Feb 2021 21:45:51 +0000 (22:45 +0100)]
r8169: disable detection of bogus xid's 308/388

Several years ago these two entries have been added, but it's not clear
why. There's no trace that there has ever been such a chip version, and
not even the r8101 vendor driver knows these id's. So let's disable
detection, and if nobody complains remove them completely later.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'bond-3ad-200g-400g'
David S. Miller [Thu, 11 Feb 2021 22:28:21 +0000 (14:28 -0800)]
Merge branch 'bond-3ad-200g-400g'

Nikolay Aleksandrov says:

====================
bonding: 3ad: support for 200G/400G ports and more verbose warning
xk
We'd like to have proper 200G and 400G support with 3ad bond mode, so we
need to add new definitions for them in order to have separate oper keys,
aggregated bandwidth and proper operation (patches 01 and 02). In
patch 03 Ido changes the code to use pr_err_once instead of
pr_warn_once which would help future detection of unsupported speeds.

v2: patch 03: use pr_err_once instead of WARN_ONCE
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobonding: 3ad: Print an error for unknown speeds
Ido Schimmel [Wed, 10 Feb 2021 20:43:33 +0000 (22:43 +0200)]
bonding: 3ad: Print an error for unknown speeds

The bond driver needs to be patched to support new ethtool speeds.
Currently it emits a single warning [1] when it encounters an unknown
speed. As evident by the two previous patches, this is not explicit
enough. Instead, promote it to an error.

[1]
bond10: (slave swp1): unknown ethtool speed (200000) for port 1 (set it to 0)

v2:
* Use pr_err_once() instead of WARN_ONCE()

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobonding: 3ad: add support for 400G speed
Nikolay Aleksandrov [Wed, 10 Feb 2021 20:43:32 +0000 (22:43 +0200)]
bonding: 3ad: add support for 400G speed

In order to be able to use 3ad mode with 400G devices we need to extend
the supported speeds.

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobonding: 3ad: add support for 200G speed
Nikolay Aleksandrov [Wed, 10 Feb 2021 20:43:31 +0000 (22:43 +0200)]
bonding: 3ad: add support for 200G speed

In order to be able to use 3ad mode with 200G devices we need to extend
the supported speeds.

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'qede-netpoll-coalesce'
David S. Miller [Thu, 11 Feb 2021 22:25:06 +0000 (14:25 -0800)]
Merge branch 'qede-netpoll-coalesce'

Bhaskar Upadhaya says:

====================
qede: add netpoll and per-queue coalesce support

This is a followup implementation after series

https://patchwork.kernel.org/project/netdevbpf/cover/1610701570-29496-1-git-send-email-bupadhaya@marvell.com/

Patch 1: Add net poll controller support to transmit kernel printks
         over UDP
Patch 2: QLogic card support multiple queues and each queue can be
         configured with respective coalescing parameters, this patch
         add per queue rx-usecs, tx-usecs coalescing parameters
Patch 3: set default per queue rx-usecs, tx-usecs coalescing parameters and
         preserve coalesce parameters across interface up and down

v3: fixed warnings reported by Dan Carpenter
v2: comments from jakub
 - p1: remove poll_controller ndo and add budget 0 support in qede_poll
 - p3: preserve coalesce parameters across interface up and down
===================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoqede: preserve per queue stats across up/down of interface
Bhaskar Upadhaya [Wed, 10 Feb 2021 20:28:31 +0000 (12:28 -0800)]
qede: preserve per queue stats across up/down of interface

Here we do the initialization of coalescing values on load.
per queue coalesce values are also restored across up/down of
ethernet interface.

Signed-off-by: Bhaskar Upadhaya <bupadhaya@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoqede: add per queue coalesce support for qede driver
Bhaskar Upadhaya [Wed, 10 Feb 2021 20:28:30 +0000 (12:28 -0800)]
qede: add per queue coalesce support for qede driver

per queue coalescing allows better and more finegrained control
over interrupt rates.

Signed-off-by: Bhaskar Upadhaya <bupadhaya@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoqede: add netpoll support for qede driver
Bhaskar Upadhaya [Wed, 10 Feb 2021 20:28:29 +0000 (12:28 -0800)]
qede: add netpoll support for qede driver

handle netpoll case when qede_poll is called by
netpoll layer with budget 0

Signed-off-by: Bhaskar Upadhaya <bupadhaya@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: fix return of random stack value
Gustavo A. R. Silva [Wed, 10 Feb 2021 19:28:41 +0000 (13:28 -0600)]
net: hns3: fix return of random stack value

Currently, a random stack value is being returned because variable
_ret_ is not properly initialized. This variable is actually not
used anymore and it should be removed.

Fix this by removing all instances of variable ret and return 0.

Fixes: 64749c9c38a9 ("net: hns3: remove redundant return value of hns3_uninit_all_ring()")
Addresses-Coverity-ID: 1501700 ("Uninitialized scalar variable")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: stmmac: dwmac-intel-plat: remove unnecessary initialization
Nobuhiro Iwamatsu [Wed, 10 Feb 2021 17:59:35 +0000 (02:59 +0900)]
net: stmmac: dwmac-intel-plat: remove unnecessary initialization

plat_dat is initialized by stmmac_probe_config_dt().
So, initialization is not required by priv->plat.
This removes unnecessary initialization and variables.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: initialize net->net_cookie at netns setup
Eric Dumazet [Wed, 10 Feb 2021 14:41:44 +0000 (06:41 -0800)]
net: initialize net->net_cookie at netns setup

It is simpler to make net->net_cookie a plain u64
written once in setup_net() instead of looping
and using atomic64 helpers.

Lorenz Bauer wants to add SO_NETNS_COOKIE socket option
and this patch would makes his patch series simpler.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Lorenz Bauer <lmb@cloudflare.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agor8169: re-configure WOL settings on resume from hibernation
Heiner Kallweit [Wed, 10 Feb 2021 14:33:20 +0000 (15:33 +0100)]
r8169: re-configure WOL settings on resume from hibernation

So far we don't re-configure WOL-related register bits when waking up
from hibernation. I'm not aware of any problem reports, but better
play safe and call __rtl8169_set_wol() in the resume() path too.
To achieve this move calling __rtl8169_set_wol() to
rtl8169_net_resume() and rename the function to rtl8169_runtime_resume().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'phy-icplus-next'
David S. Miller [Thu, 11 Feb 2021 21:53:26 +0000 (13:53 -0800)]
Merge branch 'phy-icplus-next'

Michael Walle says:

====================
net: phy: icplus: cleanups and new features

Cleanup the PHY drivers for IPplus devices and add PHY counters and MDIX
support for the IP101A/G.

Patch 5 adds a model detection based on the behavior of the PHY.
Unfortunately, the IP101A shares the PHY ID with the IP101G. But the latter
provides more features. Try to detect the newer model by accessing the page
selection register. If it is writeable, it is assumed, that it is a IP101G.

With this detection in place, we can now access registers >= 16 in a
correct way on the IP101G; that is by first selecting the correct page.
This might previouly worked, because no one ever set another active page
before booting linux.

The last two patches add the new features.
===================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: add MDI/MDIX support for IP101A/G
Michael Walle [Thu, 11 Feb 2021 07:47:50 +0000 (08:47 +0100)]
net: phy: icplus: add MDI/MDIX support for IP101A/G

Implement the operations to set desired mode and retrieve the current
mode.

This feature was tested with an IP101G.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: add PHY counter for IP101G
Michael Walle [Thu, 11 Feb 2021 07:47:49 +0000 (08:47 +0100)]
net: phy: icplus: add PHY counter for IP101G

The IP101G provides three counters: RX packets, CRC errors and symbol
errors. The error counters can be configured to clear automatically on
read. Unfortunately, this isn't true for the RX packet counter. Because
of this and because the RX packet counter is more likely to overflow,
than the error counters implement only support for the error counters.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: fix paged register access
Michael Walle [Thu, 11 Feb 2021 07:47:48 +0000 (08:47 +0100)]
net: phy: icplus: fix paged register access

Registers >= 16 are paged. Be sure to set the page. It seems this was
working for now, because the default is correct for the registers used
in the driver at the moment. But this will also assume, nobody will
change the page select register before linux is started. The page select
register is _not_ reset with a soft reset of the PHY.

To ease the function reuse between the non-paged register space of the
IP101A and the IP101G, add noop read_page()/write_page() callbacks so
the IP101G functions can also be used for the IP101A.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: don't set APS_EN bit on IP101G
Michael Walle [Thu, 11 Feb 2021 07:47:47 +0000 (08:47 +0100)]
net: phy: icplus: don't set APS_EN bit on IP101G

This bit is reserved as 'always-write-1'. While this is not a particular
error, because we are only setting it, guard it by checking the model to
prevent errors in the future.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: split IP101A/G driver
Michael Walle [Thu, 11 Feb 2021 07:47:46 +0000 (08:47 +0100)]
net: phy: icplus: split IP101A/G driver

Unfortunately, the IP101A and IP101G share the same PHY identifier.
While most of the functions are somewhat backwards compatible, there is
for example the APS_EN bit on the IP101A but on the IP101G this bit
reserved. Also, the IP101G has many more functionalities.

Deduce the model by accessing the page select register which - according
to the datasheet - is not available on the IP101A. If this register is
writable, assume we have an IP101G.

Split the combined IP101A/G driver into two separate drivers.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: use the .soft_reset() of the phy-core
Michael Walle [Thu, 11 Feb 2021 07:47:45 +0000 (08:47 +0100)]
net: phy: icplus: use the .soft_reset() of the phy-core

The PHY core already resets the PHY before .config_init() if a
.soft_reset() op is registered. Drop the open-coded ip1xx_reset().

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: drop address operator for functions
Michael Walle [Thu, 11 Feb 2021 07:47:44 +0000 (08:47 +0100)]
net: phy: icplus: drop address operator for functions

Don't sometimes use the address operator and sometimes not. Drop it and
make the code look uniform.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: use PHY_ID_MATCH_EXACT() for IP101A/G
Michael Walle [Thu, 11 Feb 2021 07:47:43 +0000 (08:47 +0100)]
net: phy: icplus: use PHY_ID_MATCH_EXACT() for IP101A/G

According to the datasheet of the IP101A/G there is no revision field
and MII_PHYSID2 always reads as 0x0c54. Use PHY_ID_MATCH_EXACT() then.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: icplus: use PHY_ID_MATCH_MODEL() macro
Michael Walle [Thu, 11 Feb 2021 07:47:42 +0000 (08:47 +0100)]
net: phy: icplus: use PHY_ID_MATCH_MODEL() macro

Simpify the initializations of the structures. There is no functional
change.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'dsa-hsr-offload'
David S. Miller [Thu, 11 Feb 2021 21:24:45 +0000 (13:24 -0800)]
Merge branch 'dsa-hsr-offload'

George McCollister says:

====================
add HSR offloading support for DSA switches

Add support for offloading HSR/PRP (IEC 62439-3) tag insertion, tag
removal, forwarding and duplication on DSA switches.
This series adds offloading to the xrs700x DSA driver.

Changes since RFC:
 * Split hsr and dsa patches. (Florian Fainelli)

Changes since v1:
 * Fixed some typos/wording. (Vladimir Oltean)
 * eliminate IFF_HSR and use is_hsr_master instead. (Vladimir Oltean)
 * Make hsr_handle_sup_frame handle skb_std as well (required when offloading)
 * Don't add hsr tag for HSR v0 supervisory frames.
 * Fixed tag insertion offloading for PRP.

Changes since v2:
 * Return -EOPNOTSUPP instead of 0 in dsa_switch_hsr_join and
   dsa_switch_hsr_leave. (Vladimir Oltean)
 * Only allow ports 1 and 2 to be HSR/PRP redundant ports. (Tobias Waldekranz)
 * Set and remove HSR features for both redundant ports. (Vladimir Oltean)
 * Change port_hsr_leave() to return int instead of void.
 * Remove hsr_init_skb() proto argument. (Vladimir Oltean)
===================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: xrs700x: add HSR offloading support
George McCollister [Wed, 10 Feb 2021 01:02:13 +0000 (19:02 -0600)]
net: dsa: xrs700x: add HSR offloading support

Add offloading for HSR/PRP (IEC 62439-3) tag insertion, tag removal
forwarding and duplication supported by the xrs7000 series switches.

Only HSR v1 and PRP v1 are supported by the xrs7000 series switches (HSR
v0 is not).

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: add support for offloading HSR
George McCollister [Wed, 10 Feb 2021 01:02:12 +0000 (19:02 -0600)]
net: dsa: add support for offloading HSR

Add support for offloading of HSR/PRP (IEC 62439-3) tag insertion
tag removal, duplicate generation and forwarding on DSA switches.

Add DSA_NOTIFIER_HSR_JOIN and DSA_NOTIFIER_HSR_LEAVE which trigger calls
to .port_hsr_join and .port_hsr_leave in the DSA driver for the switch.

The DSA switch driver should then set netdev feature flags for the
HSR/PRP operation that it offloads.
    NETIF_F_HW_HSR_TAG_INS
    NETIF_F_HW_HSR_TAG_RM
    NETIF_F_HW_HSR_FWD
    NETIF_F_HW_HSR_DUP

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hsr: add offloading support
George McCollister [Wed, 10 Feb 2021 01:02:11 +0000 (19:02 -0600)]
net: hsr: add offloading support

Add support for offloading of HSR/PRP (IEC 62439-3) tag insertion
tag removal, duplicate generation and forwarding.

For HSR, insertion involves the switch adding a 6 byte HSR header after
the 14 byte Ethernet header. For PRP it adds a 6 byte trailer.

Tag removal involves automatically stripping the HSR/PRP header/trailer
in the switch. This is possible when the switch also performs auto
deduplication using the HSR/PRP header/trailer (making it no longer
required).

Forwarding involves automatically forwarding between redundant ports in
an HSR. This is crucial because delay is accumulated as a frame passes
through each node in the ring.

Duplication involves the switch automatically sending a single frame
from the CPU port to both redundant ports. This is required because the
inserted HSR/PRP header/trailer must contain the same sequence number
on the frames sent out both redundant ports.

Export is_hsr_master so DSA can tell them apart from other devices in
dsa_slave_changeupper.

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hsr: generate supervision frame without HSR/PRP tag
George McCollister [Wed, 10 Feb 2021 01:02:10 +0000 (19:02 -0600)]
net: hsr: generate supervision frame without HSR/PRP tag

For a switch to offload insertion of HSR/PRP tags, frames must not be
sent to the CPU facing switch port with a tag. Generate supervision frames
(eth type ETH_P_PRP) without HSR v1 (ETH_P_HSR)/PRP tag and rely on
create_tagged_frame which inserts it later. This will allow skipping the
tag insertion for all outgoing frames in the future which is required for
HSR v1/PRP tag insertions to be offloaded.

HSR v0 supervision frames always contain tag information so insertion of
the tag can't be offloaded. IEC 62439-3 Ed.2.0 (HSR v1) specifically
notes that this was changed since v0 to allow offloading.

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: xrs700x: use of_match_ptr() on xrs700x_mdio_dt_ids
George McCollister [Tue, 9 Feb 2021 21:12:56 +0000 (15:12 -0600)]
net: dsa: xrs700x: use of_match_ptr() on xrs700x_mdio_dt_ids

Use of_match_ptr() on xrs700x_mdio_dt_ids so that NULL is substituted
when CONFIG_OF isn't defined. This will prevent unnecessary use of
xrs700x_mdio_dt_ids when CONFIG_OF isn't defined.

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: xrs700x: fix unused warning for of_device_id
George McCollister [Tue, 9 Feb 2021 21:12:55 +0000 (15:12 -0600)]
net: dsa: xrs700x: fix unused warning for of_device_id

Fix unused variable warning that occurs when CONFIG_OF isn't defined by
adding __maybe_unused.

>> drivers/net/dsa/xrs700x/xrs700x_i2c.c:127:34: warning: unused
variable 'xrs700x_i2c_dt_ids' [-Wunused-const-variable]
   static const struct of_device_id xrs700x_i2c_dt_ids[] = {

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'tcp-rfc-6056'
David S. Miller [Thu, 11 Feb 2021 21:13:05 +0000 (13:13 -0800)]
Merge branch 'tcp-rfc-6056'

Eric Dumazet says:

====================
tcp: RFC 6056 induced changes

This is based on a report from David Dworken.

First patch implements RFC 6056 3.3.4 proposal.

Second patch is adding a little bit of noise to make
attacker life a bit harder.
===================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agotcp: add some entropy in __inet_hash_connect()
Eric Dumazet [Tue, 9 Feb 2021 19:20:28 +0000 (11:20 -0800)]
tcp: add some entropy in __inet_hash_connect()

Even when implementing RFC 6056 3.3.4 (Algorithm 4: Double-Hash
Port Selection Algorithm), a patient attacker could still be able
to collect enough state from an otherwise idle host.

Idea of this patch is to inject some noise, in the
cases __inet_hash_connect() found a candidate in the first
attempt.

This noise should not significantly reduce the collision
avoidance, and should be zero if connection table
is already well used.

Note that this is not implementing RFC 6056 3.3.5
because we think Algorithm 5 could hurt typical
workloads.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: David Dworken <ddworken@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agotcp: change source port randomizarion at connect() time
Eric Dumazet [Tue, 9 Feb 2021 19:20:27 +0000 (11:20 -0800)]
tcp: change source port randomizarion at connect() time

RFC 6056 (Recommendations for Transport-Protocol Port Randomization)
provides good summary of why source selection needs extra care.

David Dworken reminded us that linux implements Algorithm 3
as described in RFC 6056 3.3.3

Quoting David :
   In the context of the web, this creates an interesting info leak where
   websites can count how many TCP connections a user's computer is
   establishing over time. For example, this allows a website to count
   exactly how many subresources a third party website loaded.
   This also allows:
   - Distinguishing between different users behind a VPN based on
       distinct source port ranges.
   - Tracking users over time across multiple networks.
   - Covert communication channels between different browsers/browser
       profiles running on the same computer
   - Tracking what applications are running on a computer based on
       the pattern of how fast source ports are getting incremented.

Section 3.3.4 describes an enhancement, that reduces
attackers ability to use the basic information currently
stored into the shared 'u32 hint'.

This change also decreases collision rate when
multiple applications need to connect() to
different destinations.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: David Dworken <ddworken@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoRevert "net-loopback: set lo dev initial state to UP"
Petr Machata [Tue, 9 Feb 2021 17:52:04 +0000 (18:52 +0100)]
Revert "net-loopback: set lo dev initial state to UP"

In commit c9dca822c729 ("net-loopback: set lo dev initial state to UP"),
linux started automatically bringing up the loopback device of a newly
created namespace. However, an existing user script might reasonably have
the following stanza when creating a new namespace -- and in fact at least
tools/testing/selftests/net/fib_nexthops.sh in Linux's very own testsuite
does:

 # set -e
 # ip netns add foo
 # ip -netns foo addr add 127.0.0.1/8 dev lo
 # ip -netns foo link set lo up
 # set +e

This will now fail, because the kernel reasonably rejects "ip addr add" of
a duplicate address. The described change of behavior therefore constitutes
a breakage. Revert it.

Fixes: c9dca822c729 ("net-loopback: set lo dev initial state to UP")
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: introduce phydev->port
Michael Walle [Tue, 9 Feb 2021 16:38:52 +0000 (17:38 +0100)]
net: phy: introduce phydev->port

At the moment, PORT_MII is reported in the ethtool ops. This is odd
because it is an interface between the MAC and the PHY and no external
port. Some network card drivers will overwrite the port to twisted pair
or fiber, though. Even worse, the MDI/MDIX setting is only used by
ethtool if the port is twisted pair.

Set the port to PORT_TP by default because most PHY drivers are copper
ones. If there is fibre support and it is enabled, the PHY driver will
set it to PORT_FIBRE.

This will change reporting PORT_MII to either PORT_TP or PORT_FIBRE;
except for the genphy fallback driver.

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodevlink: Fix dmac_filter trap name, align to its documentation
Aya Levin [Tue, 9 Feb 2021 10:59:55 +0000 (12:59 +0200)]
devlink: Fix dmac_filter trap name, align to its documentation

%s/dest_mac_filter/dmac_filter/g

Fixes: e78ab164591f ("devlink: Add DMAC filter generic packet trap")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reported-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'ibmvnic-coding-style'
David S. Miller [Thu, 11 Feb 2021 21:03:00 +0000 (13:03 -0800)]
Merge branch 'ibmvnic-coding-style'

Lijun Pan says:

====================
ibmvnic: a set of fixes of coding style

This series address several coding style problems.

v2: rebased on top of tree. Add the Reviewed-by tag from v1 reviews.
    patch 8/8 is new.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: prefer strscpy over strlcpy
Lijun Pan [Thu, 11 Feb 2021 06:43:25 +0000 (00:43 -0600)]
ibmvnic: prefer strscpy over strlcpy

Fix this warning:
WARNING: Prefer strscpy over strlcpy - see: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: remove unused spinlock_t stats_lock definition
Lijun Pan [Thu, 11 Feb 2021 06:43:24 +0000 (00:43 -0600)]
ibmvnic: remove unused spinlock_t stats_lock definition

stats_lock is no longer used. So remove it.

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: add comments for spinlock_t definitions
Lijun Pan [Thu, 11 Feb 2021 06:43:23 +0000 (00:43 -0600)]
ibmvnic: add comments for spinlock_t definitions

There are several spinlock_t definitions without comments.
Add them.

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: fix miscellaneous checks
Lijun Pan [Thu, 11 Feb 2021 06:43:22 +0000 (00:43 -0600)]
ibmvnic: fix miscellaneous checks

Fix the following checkpatch checks:
CHECK: Macro argument 'off' may be better as '(off)' to
avoid precedence issues
CHECK: Alignment should match open parenthesis
CHECK: multiple assignments should be avoided
CHECK: Blank lines aren't necessary before a close brace '}'
CHECK: Please use a blank line after function/struct/union/enum
declarations
CHECK: Unnecessary parentheses around 'rc != H_FUNCTION'

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: avoid multiple line dereference
Lijun Pan [Thu, 11 Feb 2021 06:43:21 +0000 (00:43 -0600)]
ibmvnic: avoid multiple line dereference

Fix the following checkpatch warning:
WARNING: Avoid multiple line dereference

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: fix braces
Lijun Pan [Thu, 11 Feb 2021 06:43:20 +0000 (00:43 -0600)]
ibmvnic: fix braces

Fix the following checkpatch warning:
WARNING: braces {} are not necessary for single statement blocks

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: fix block comments
Lijun Pan [Thu, 11 Feb 2021 06:43:19 +0000 (00:43 -0600)]
ibmvnic: fix block comments

Fix the following checkpatch warning:
WARNING: networking block comments don't use an empty /* line, use /* Comment...

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: prefer 'unsigned long' over 'unsigned long int'
Lijun Pan [Thu, 11 Feb 2021 06:43:18 +0000 (00:43 -0600)]
ibmvnic: prefer 'unsigned long' over 'unsigned long int'

Fix the following checkpatch warnings:
WARNING: Prefer 'unsigned long' over 'unsigned long int' as the int is unnecessary
WARNING: Prefer 'long' over 'long int' as the int is unnecessary

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next...
David S. Miller [Thu, 11 Feb 2021 20:59:29 +0000 (12:59 -0800)]
Merge branch '40GbE' of git://git./linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
40GbE Intel Wired LAN Driver Updates 2021-02-10

This series contains updates to i40e driver only.

Arkadiusz adds support for software controlled DCB. Upon disabling of the
firmware LLDP agent, the driver configures DCB with default values
(only one Traffic Class). At the same time, it allows a software based
LLDP agent - userspace application i.e. lldpad) to receive DCB TLVs
and set desired DCB configuration through DCB related netlink callbacks.

Aleksandr implements get and set ethtool ops for Energy Efficient
Ethernet.

Przemyslaw extends support for ntuple filters allowing for Flow Director
IPv6 and VLAN filters.

Kaixu Xia removes an unneeded assignment.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/mlx5: SF, Fix error return code in mlx5_sf_dev_probe()
Wei Yongjun [Wed, 10 Feb 2021 07:54:17 +0000 (07:54 +0000)]
net/mlx5: SF, Fix error return code in mlx5_sf_dev_probe()

Fix to return negative error code -ENOMEM from the ioremap() error
handling case instead of 0, as done elsewhere in this function.

Fixes: 1958fc2f0712 ("net/mlx5: SF, Add auxiliary device driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5e: Fix error return code in mlx5e_tc_esw_init()
Wei Yongjun [Wed, 10 Feb 2021 07:46:05 +0000 (07:46 +0000)]
net/mlx5e: Fix error return code in mlx5e_tc_esw_init()

Fix to return negative error code from the mlx5e_tc_tun_init() error
handling case instead of 0, as done elsewhere in this function.

This commit also using 0 instead of 'ret' when success since it is
always equal to 0.

Fixes: 8914add2c9e5 ("net/mlx5e: Handle FIB events to update tunnel endpoint device")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: Fix a NULL vs IS_ERR() check
Dan Carpenter [Wed, 10 Feb 2021 11:06:28 +0000 (14:06 +0300)]
net/mlx5: Fix a NULL vs IS_ERR() check

The mlx5_chains_get_table() function doesn't return NULL, it returns
error pointers so we need to fix this condition.

Fixes: 34ca65352ddf ("net/mlx5: E-Switch, Indirect table infrastructure")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: docs: correct section reference in table of contents
Lukas Bulwahn [Fri, 5 Feb 2021 09:55:06 +0000 (10:55 +0100)]
net/mlx5: docs: correct section reference in table of contents

Commit 142d93d12dc1 ("net/mlx5: Add devlink subfunction port
documentation") refers to a section 'mlx5 port function' in the table of
contents, but includes a section 'mlx5 function attributes' instead.

Hence, make htmldocs warns:

  mlx5.rst:16: WARNING: Unknown target name: "mlx5 port function".

Correct the section reference in table of contents to the actual name of
section in the documentation.

Also, tune another section underline while visiting this document.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5e: Fix tc_tun.h to verify MLX5_ESWITCH config
Vlad Buslov [Tue, 9 Feb 2021 08:11:45 +0000 (10:11 +0200)]
net/mlx5e: Fix tc_tun.h to verify MLX5_ESWITCH config

Exclude contents of tc_tun.h header when CONFIG_MLX5_ESWITCH is disabled to
prevent compile-time errors when compiling with such config.

Fixes: 0d9f96471493 ("net/mlx5e: Extract tc tunnel encap/decap code to dedicated file")
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: Assign boolean values to a bool variable
Jiapeng Zhong [Mon, 25 Jan 2021 07:50:37 +0000 (15:50 +0800)]
net/mlx5: Assign boolean values to a bool variable

Fix the following coccicheck warnings:

./drivers/net/ethernet/mellanox/mlx5/core/fs_core.c:575:2-14: WARNING:
Assignment of 0/1 to bool variable.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Zhong <abaci-bugfix@linux.alibaba.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5e: Fix spelling mistake "Unknouwn" -> "Unknown"
Colin Ian King [Wed, 3 Feb 2021 11:10:49 +0000 (11:10 +0000)]
net/mlx5e: Fix spelling mistake "Unknouwn" -> "Unknown"

There is a spelling mistake in a netdev_warn message. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5e: Fix spelling mistake "channles" -> "channels"
Colin Ian King [Thu, 4 Feb 2021 09:32:32 +0000 (09:32 +0000)]
net/mlx5e: Fix spelling mistake "channles" -> "channels"

There is a spelling mistake in a netdev_warn message. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: Delete device list leftover
Leon Romanovsky [Mon, 4 Jan 2021 07:38:57 +0000 (09:38 +0200)]
net/mlx5: Delete device list leftover

Device list is not stored in mlx5_priv anymore, so delete it as it's not
used.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5_core: remove unused including <generated/utsrelease.h>
Zou Wei [Wed, 9 Dec 2020 07:01:32 +0000 (15:01 +0800)]
net/mlx5_core: remove unused including <generated/utsrelease.h>

Remove including <generated/utsrelease.h> that don't need it.

Fixes: 17a7612b99e6 ("net/mlx5_core: Clean driver version and name")
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: fix spelling mistake in Kconfig "accelaration" -> "acceleration"
Colin Ian King [Tue, 15 Dec 2020 14:49:46 +0000 (14:49 +0000)]
net/mlx5: fix spelling mistake in Kconfig "accelaration" -> "acceleration"

There are some spelling mistakes in the Kconfig. Fix these.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet: mvpp2: add an entry to skip parser
Stefan Chulski [Wed, 10 Feb 2021 14:17:13 +0000 (16:17 +0200)]
net: mvpp2: add an entry to skip parser

This entry used when skipping the parser needed,
for example, the custom header pretended to ethernet header.

Suggested-by: Liron Himi <liron@marvell.com>
Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agorxrpc: Fix missing dependency on NET_UDP_TUNNEL
David Howells [Tue, 9 Feb 2021 15:02:05 +0000 (15:02 +0000)]
rxrpc: Fix missing dependency on NET_UDP_TUNNEL

The changes to make rxrpc create the udp socket missed a bit to add the
Kconfig dependency on the udp tunnel code to do this.

Fix this by adding making AF_RXRPC select NET_UDP_TUNNEL.

Fixes: 1a9b86c9fd95 ("rxrpc: use udp tunnel APIs instead of open code in rxrpc_open_socket")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
cc: alaa@dev.mellanox.co.il
cc: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'octeon-ethtool'
David S. Miller [Wed, 10 Feb 2021 23:19:54 +0000 (15:19 -0800)]
Merge branch 'octeon-ethtool'

Hariprasad Kelam says:

====================
ethtool support for fec and link configuration

This series of patches add support for forward error correction(fec) and
physical link configuration. Patches 1&2 adds necessary mbox handlers for fec
mode configuration request and to fetch stats. Patch 3 registers driver
callbacks for fec mode configuration and display. Patch 4&5 adds support of mbox
handlers for configuring link parameters like speed/duplex and autoneg etc.
Patche 6&7 registers driver callbacks for physical link configuration.

Change-log:
v2:
- Fixed review comments
- Corrected indentation issues
        - Return -ENOMEM incase of mbox allocation failure
- added validation for input fecparams bitmask values
        - added more comments

V3:
- Removed inline functions
        - Make use of ethtool helpers APIs to display supported
          advertised modes
        - corrected indentation issues
        - code changes such that return early in case of failure
          to aid branch prediction
v4:
- Corrected indentation issues
- Use FEC_OFF if user requests for FEC_AUTO mode
- Do not clear fec stats in case of user changes
  fec mode
- dont hide fec stats depending on interface mode
  selection
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-pf: ethtool physical link configuration
Christina Jacob [Tue, 9 Feb 2021 10:35:31 +0000 (16:05 +0530)]
octeontx2-pf: ethtool physical link configuration

Register set_link_ksetting callback with driver such that
link configurations parameters like advertised mode,speed, duplex
and autoneg can be configured.

below command
ethtool -s eth0 advertise 0x1 speed 10 duplex full autoneg on

Signed-off-by: Christina Jacob <cjacob@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-pf: ethtool physical link status
Christina Jacob [Tue, 9 Feb 2021 10:35:30 +0000 (16:05 +0530)]
octeontx2-pf: ethtool physical link status

Register get_link_ksettings callback to get link status information
from the driver. As virtual function (vf) shares same physical link
same API is used for both the drivers and for loop back drivers
simply returns the fixed values as its does not have physical link.

ethtool eth3
Settings for eth3:
        Supported ports: [ ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Half 1000baseT/Full
                                10000baseKR/Full
                                1000baseX/Full
        Supports auto-negotiation: No
        Supported FEC modes: BaseR RS
        Advertised link modes:  Not reported
        Advertised pause frame use: No
        Advertised auto-negotiation: No
        Advertised FEC modes: None

ethtool lbk0
Settings for lbk0:
Speed: 100000Mb/s
        Duplex: Full

Signed-off-by: Christina Jacob <cjacob@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: advertised link modes support on cgx
Christina Jacob [Tue, 9 Feb 2021 10:35:29 +0000 (16:05 +0530)]
octeontx2-af: advertised link modes support on cgx

CGX supports setting advertised link modes on physical link.
This patch adds support to derive cgx mode from ethtool
link mode and pass it to firmware to configure the same.

Signed-off-by: Christina Jacob <cjacob@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: Physical link configuration support
Christina Jacob [Tue, 9 Feb 2021 10:35:28 +0000 (16:05 +0530)]
octeontx2-af: Physical link configuration support

CGX LMAC, the physical interface support link configuration parameters
like speed, auto negotiation, duplex  etc. Firmware saves these into
memory region shared between firmware and this driver.

This patch adds mailbox handler set_link_mode, fw_data_get to
configure and read these parameters.

Signed-off-by: Christina Jacob <cjacob@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-pf: ethtool fec mode support
Christina Jacob [Tue, 9 Feb 2021 10:35:27 +0000 (16:05 +0530)]
octeontx2-pf: ethtool fec mode support

Add ethtool support to configure fec modes baser/rs and
support to fecth FEC stats from CGX as well PHY.

Configure fec mode
- ethtool --set-fec eth0 encoding rs/baser/off/auto
Query fec mode
- ethtool --show-fec eth0

Signed-off-by: Christina Jacob <cjacob@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: Add new CGX_CMD to get PHY FEC statistics
Felix Manlunas [Tue, 9 Feb 2021 10:35:26 +0000 (16:05 +0530)]
octeontx2-af: Add new CGX_CMD to get PHY FEC statistics

This patch adds support to fetch fec stats from PHY. The stats are
put in the shared data struct fwdata.  A PHY driver indicates
that it has FEC stats by setting the flag fwdata.phy.misc.has_fec_stats

Besides CGX_CMD_GET_PHY_FEC_STATS, also add CGX_CMD_PRBS and
CGX_CMD_DISPLAY_EYE to enum cgx_cmd_id so that Linux's enum list is in sync
with firmware's enum list.

Signed-off-by: Felix Manlunas <fmanlunas@marvell.com>
Signed-off-by: Christina Jacob <cjacob@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: forward error correction configuration
Christina Jacob [Tue, 9 Feb 2021 10:35:25 +0000 (16:05 +0530)]
octeontx2-af: forward error correction configuration

CGX block supports forward error correction modes baseR
and RS. This patch adds support to set encoding mode
and to read corrected/uncorrected block counters

Adds new mailbox handlers set_fec to configure encoding modes
and fec_stats to read counters and also increase mbox timeout
to accomdate firmware command response timeout.

Along with new CGX_CMD_SET_FEC command add other commands to
sync with kernel enum list with firmware.

Signed-off-by: Christina Jacob <cjacob@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: octeontx2: Fix the confusion in buffer alloc failure path
Kevin Hao [Tue, 9 Feb 2021 10:15:16 +0000 (18:15 +0800)]
net: octeontx2: Fix the confusion in buffer alloc failure path

Pavel pointed that the return of dma_addr_t in
otx2_alloc_rbuf/__otx2_alloc_rbuf() seem suspicious because a negative
error code may be returned in some cases. For a dma_addr_t, the error
code such as -ENOMEM does seem a valid value, so we can't judge if the
buffer allocation fail or not based on that value. Add a parameter for
otx2_alloc_rbuf/__otx2_alloc_rbuf() to store the dma address and make
the return value to indicate if the buffer allocation really fail or
not.

Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Tested-by: Subbaraya Sundeep <sbhatta@marvell.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'Add-MBIM-over-MHI-support'
David S. Miller [Wed, 10 Feb 2021 23:11:51 +0000 (15:11 -0800)]
Merge branch 'Add-MBIM-over-MHI-support'

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mhi: Add mbim proto
Loic Poulain [Tue, 9 Feb 2021 09:05:58 +0000 (10:05 +0100)]
net: mhi: Add mbim proto

MBIM has initially been specified by USB-IF for transporting data (IP)
between a modem and a host over USB. However some modern modems also
support MBIM over PCIe (via MHI). In the same way as QMAP(rmnet), it
allows to aggregate IP packets and to perform context multiplexing.

This change adds minimal MBIM data transport support to MHI, allowing
to support MBIM only modems. MBIM being based on USB NCM, it reuses
and copy some helpers/functions from the USB stack (cdc-ncm, cdc-mbim).

Note that is a subset of the CDC-MBIM specification, supporting only
transport of network data (IP), there is no support for DSS. Moreover
the multi-session (for multi-pdn) is not supported in this initial
version, but will be added latter, and aligned with the cdc-mbim
solution (VLAN tags).

This code has been inspired from the mhi_mbim downstream implementation
(Carl Yin <carl.yin@quectel.com>).

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mhi: Add rx_length_errors stat
Loic Poulain [Tue, 9 Feb 2021 09:05:57 +0000 (10:05 +0100)]
net: mhi: Add rx_length_errors stat

This can be used by proto when packet len is incorrect.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mhi: Create mhi.h
Loic Poulain [Tue, 9 Feb 2021 09:05:56 +0000 (10:05 +0100)]
net: mhi: Create mhi.h

Move mhi-net shared structures to mhi header, that will be used by
upcoming proto(s).

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mhi: Add dedicated folder
Loic Poulain [Tue, 9 Feb 2021 09:05:55 +0000 (10:05 +0100)]
net: mhi: Add dedicated folder

Create a dedicated mhi directory for mhi-net, mhi-net is going to
be split into differente files (for additional protocol support).

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mhi: Add protocol support
Loic Poulain [Tue, 9 Feb 2021 09:05:54 +0000 (10:05 +0100)]
net: mhi: Add protocol support

MHI can transport different protocols, some are handled at upper level,
like IP and QMAP(rmnet/netlink), but others will need to be inside MHI
net driver, like mbim. This change adds support for protocol rx and
tx_fixup callbacks registration, that can be used to encode/decode the
targeted protocol.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agocxgb4: collect serial config version from register
Rahul Lakkireddy [Tue, 9 Feb 2021 05:52:38 +0000 (11:22 +0530)]
cxgb4: collect serial config version from register

Collect serial config version information directly from an internal
register, instead of explicitly resizing VPD.

v2:
- Add comments on info stored in PCIE_STATIC_SPARE2 register.

Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoi40e: remove the useless value assignment in i40e_clean_adminq_subtask
Kaixu Xia [Sat, 14 Nov 2020 14:55:39 +0000 (22:55 +0800)]
i40e: remove the useless value assignment in i40e_clean_adminq_subtask

The variable ret is overwritten by the following call
i40e_clean_arq_element() and the assignment is useless, so remove it.

Reported-by: Tosk Robot <tencent_os_robot@tencent.com>
Signed-off-by: Kaixu Xia <kaixuxia@tencent.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoi40e: VLAN field for flow director
Przemyslaw Patynowski [Fri, 18 Dec 2020 10:36:29 +0000 (10:36 +0000)]
i40e: VLAN field for flow director

Allow user to specify VLAN field and add it to flow director. Show VLAN
field in "ethtool -n ethx" command.
Handle VLAN type and tag field provided by ethtool command. Refactored
filter addition, by replacing static arrays with runtime dummy packet
creation, which allows specifying VLAN field.
Previously, VLAN field was omitted.

Signed-off-by: Przemyslaw Patynowski <przemyslawx.patynowski@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoi40e: Add flow director support for IPv6
Przemyslaw Patynowski [Fri, 18 Dec 2020 10:36:19 +0000 (10:36 +0000)]
i40e: Add flow director support for IPv6

Flow director for IPv6 is not supported.
1) Implementation of support for IPv6 flow director.
2) Added handlers for addition of TCP6, UDP6, SCTP6, IPv6.
3) Refactored legacy code to make it more generic.
4) Added packet templates for TCP6, UDP6, SCTP6, IPv6.
5) Added handling of IPv6 source and destination address for flow director.
6) Improved argument passing for source and destination portin TCP6, UDP6
   and SCTP6.
7) Added handling of ethtool -n for IPv6, TCP6,UDP6, SCTP6.
8) Used correct bit flag regarding FLEXOFF field of flow director data
   descriptor.

Without this patch, there would be no support for flow director on IPv6,
TCP6, UDP6, SCTP6.
Tested based on x710 datasheet by using:
ethtool -N enp133s0f0 flow-type tcp4 src-port 13 dst-port 37 user-def 0x44142 action 1
ethtool -N enp133s0f0 flow-type tcp6 src-port 13 dst-port 40 user-def 0x44142 action 2
ethtool -N enp133s0f0 flow-type udp4 src-port 20 dst-port 40 user-def 0x44142 action 3
ethtool -N enp133s0f0 flow-type udp6 src-port 25 dst-port 40 user-def 0x44142 action 4
ethtool -N enp133s0f0 flow-type sctp4 src-port 55 dst-port 65 user-def 0x44142 action 5
ethtool -N enp133s0f0 flow-type sctp6 src-port 60 dst-port 40 user-def 0x44142 action 6
ethtool -N enp133s0f0 flow-type ip4 src-ip 1.1.1.1 dst-ip 1.1.1.4 user-def 0x44142 action 7
ethtool -N enp133s0f0 flow-type ip6 src-ip fe80::3efd:feff:fe6f:bbbb dst-ip fe80::3efd:feff:fe6f:aaaa user-def 0x44142 action 8
Then send traffic from client which matches the criteria provided to ethtool.
Observe that packets are redirected to user set queues with ethtool -S <interface>

Signed-off-by: Przemyslaw Patynowski <przemyslawx.patynowski@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoi40e: Add EEE status getting & setting implementation
Aleksandr Loktionov [Mon, 16 Nov 2020 15:45:59 +0000 (15:45 +0000)]
i40e: Add EEE status getting & setting implementation

Implement Energy Efficient Ethernet (EEE) status getting & setting.
The i40e_get_eee() requesting PHY EEE capabilities from firmware.
The i40e_set_eee() function requests PHY EEE capabilities
from firmware and sets PHY EEE advertising to full abilities or 0
depending whether EEE is to be enabled or disabled.

Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoi40e: Add netlink callbacks support for software based DCB
Arkadiusz Kubalewski [Mon, 19 Oct 2020 23:50:29 +0000 (23:50 +0000)]
i40e: Add netlink callbacks support for software based DCB

Add callbacks used by software based LLDP agent, which allows to
configure DCB feature from userspace.

Update copyright dates as appropriate.

If LLDP agent is turned off in BIOS, or after setting private flag
("disable-fw-lldp on"). The driver initialized DCB functionality with
default values, one traffic class with 100% bandwidth allocated.

The new netlink callbacks are required for software LLDP agent, it
must be able to acquire current DCB configuration of a network port
and apply DCB configuration changes, if required.

Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoi40e: Add init and default config of software based DCB
Arkadiusz Kubalewski [Mon, 19 Oct 2020 23:50:28 +0000 (23:50 +0000)]
i40e: Add init and default config of software based DCB

Add extra handling on changing the "disable-fw-lldp" private
flag to properly initialize software based DCB feature.

Add default configuration of DCB functionality when Firmware
LLDP agent is turned off, in case of driver probe and device
reset on reconfiguration.

Update copyright dates as appropriate.

Software based DCB is a brand-new feature in i40e driver.
Before, DCB was implemented by Firmware LLDP agent only. The agent was
responsible for handling incoming DCB-related LLDP frames and
applying received DCB configuration to hardware.

Default configuration and new initialization flow for software based
DCB is required. If LLDP agent is turned off in BIOS, or after
setting private flag ("disable-fw-lldp on"). The driver initializes
DCB functionality with default values, one traffic class with 100%
bandwidth allocated.

Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>