Add function to get namespace in different directions. It will be
extended for switchdev mode in later patch, but no functionality change
for now.
Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/ac2982c34f1ed3288d4670cacfd7e1b87a8c96d9.1690802064.git.leon@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

The documentation above pds_client_register states that it returns 0 on
success and negative on error. However, it actually returns a positive
client ID on success and negative on error. Fix the documentation to
state exactly that.
Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Link: https://lore.kernel.org/r/20230801165833.1622-1-brett.creeley@amd.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Commit 29ab586c ("net: switchdev: Remove bridge bypass support from switchdev")
leave this unused.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20230801144209.27512-1-yuehaibing@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Since commit b1edeb10 ("netlabel: Replace protocol/NetLabel linking with refrerence counts")
this declaration is unused and can be removed.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/r/20230801143453.24452-1-yuehaibing@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Commit 642c2c95 ("ila: xlat changes") removed ila_xlat_outgoing()
and ila_xlat_incoming() functions, then this file became unnecessary.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20230801143129.40652-1-yuehaibing@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

commit 8a59f9d1 ("sock: Introduce sk->sk_prot->psock_update_sk_prot()")
left behind this.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20230801133902.3660-1-yuehaibing@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

There is no possible for platform_get_irq() to return 0
and the return value of platform_get_irq() is more sensible
to show the error reason.

And there is no need to call the dev_warn() function directly to print
a custom message when handling an error from platform_get_irq() function as
it is going to display an appropriate error message in case of a failure.
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20230801133121.416319-1-ruanjinjie@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Replace bogus comment about matching the latched timestamp to one of the
received frames. That comment is probably copied from mv88e6xxx and true for
these switches. However, the hellcreek switch is configured to insert the
timestamp directly into the PTP packets.

While here, remove the other comments regarding the list splicing and locking as
well, because it doesn't add any value.
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20230801131647.84697-1-kurt@linutronix.deSigned-off-by: Jakub Kicinski <kuba@kernel.org>

There are a little ternary operators, the true or false judgement
of which is unnecessary in C language semantics.
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20230801111928.300231-1-ruanjinjie@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

There are a little ternary operators, the true or false judgement
of which is unnecessary in C language semantics. So remove it
to clean Code.
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Sunil Goutham <sgoutham@marvell.com>
Link: https://lore.kernel.org/r/20230801112638.317149-1-ruanjinjie@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

net: hisilicon: fix the return value handle and remove redundant netdev_err() for platform_get_irq()

There is no possible for platform_get_irq() to return 0
and the return value of platform_get_irq() is more sensible
to show the error reason.

And there is no need to call the netdev_err() function directly to print
a custom message when handling an error from platform_get_irq() function as
it is going to display an appropriate error message in case of a failure.
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/20230731073858.3633193-1-ruanjinjie@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

./drivers/net/ethernet/freescale/fman/mac.c: linux/of_platform.h is included more than once.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=6039Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

tcp_mmap tests TCP_ZEROCOPY_RECEIVE. If 0% of data is received using
mmap, this may be due to mss. Report rcv_mss to identify this cause.

Output of a run failed due to too small mss:

    received 32768 MB (0 % mmap'ed) in 8.40458 s, 32.7057 Gbit
      cpu usage user:0.027922 sys:8.21126, 251.44 usec per MB, 3252 c-switches, rcv_mss 1428

Output on a successful run:

    received 32768 MB (99.9507 % mmap'ed) in 4.69023 s, 58.6064 Gbit
      cpu usage user:0.029172 sys:2.56105, 79.0473 usec per MB, 57591 c-switches, rcv_mss 4096
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

MD Danish Anwar says:

====================
Introduce ICSSG based ethernet Driver

The Programmable Real-time Unit and Industrial Communication Subsystem
Gigabit (PRU_ICSSG) is a low-latency microcontroller subsystem in the TI
SoCs. This subsystem is provided for the use cases like the implementation
of custom peripheral interfaces, offloading of tasks from the other
processor cores of the SoC, etc.

The subsystem includes many accelerators for data processing like
multiplier and multiplier-accumulator. It also has peripherals like
UART, MII/RGMII, MDIO, etc. Every ICSSG core includes two 32-bit
load/store RISC CPU cores called PRUs.

The above features allow it to be used for implementing custom firmware
based peripherals like ethernet.

This series adds the YAML documentation and the driver with basic EMAC
support for TI AM654 Silicon Rev 2 SoC with the PRU_ICSSG Sub-system.
running dual-EMAC firmware.
This currently supports basic EMAC with 1Gbps and 100Mbps link. 10M and
half-duplex modes are not yet supported because they require the support
of an IEP, which will be added later.
Advanced features like switch-dev and timestamping will be added later.

This is the v13 of the patch series [v1]. This version of the patchset
addresses comments made on v12.

There series doesn't have any dependency.

Changes from v12 to v13 :
*) Rebased the series on latest net-next.
*) Addressed Jakub's comments on ndo_xmit API. Now we will only stop queues
   based on occupancy not on dma errors.
*) Removed limiting the number of serviced packets to budget for Tx NAPI.
   Now Tx NAPI will keep servicing packets.
*) Removed netif_running() check when packet arrives.
*) Introduced prototypes of APIs in the same patch where these APIs are added.
   Dropped __maybe_unused tags as compiler only cares about prototypes
   existing, not whether actual callers are in place. Now prototypes of these
   APIs are present in the same patch where they are introduced but thes APIs
   are called later (in patch 6).

Changes from v11 to v12 :
*) Rebased the series on latest net-next.
*) Addressed Jakub's comments on ndo_xmit API.
*) Added hooks to .get_rmon_stats for the driver. Now tx / rx bucket size
   and frame counts per bucket will be fetched by ethtool_rmon_stats instead
   of ethtool -S.
*) Added __maybe_unused tags to unused config and classifier APIs in patch
   2,3 and 4. These tags are later removed in patch 6.

Changes from v10 to v11 :
*) Rebased the series on latest net-next.
*) Split the ICSSG driver introduction patch into 9 different patches as
   asked by Jakub.
*) Introduced new patch(patch 8/10) to dump Standard network interface
   staticstics via ndo_get_stats64. Now certain stats that are reported by
   ICSSG hardware and are also part of struct rtnl_link_stats64, will be
   reported by ndo_get_stats64. While other stats that are not part of the
   struct rtnl_link_stats64 will be reported by ethtool -S. These stats
   are not duplicated.

Changes from v9 to v10 :
*) Rebased the series on latest net-next.
*) Moved 'ndev prueth->emac[mac] == emac' assignment to the end of function
   prueth_netdev_init().
*) In unsupported phy_mode switch case instead of returning -EINVAL, store
   the error code in ret and 'goto free'

Changes from v8 to v9 :
*) Rebased the series on latest net-next.
*) Fixed smatch and sparse warnings as pointed by Simon.
*) Fixed leaky ndev in prueth_netdev_init() as asked by Simon.

Changes from v7 to v8 :
*) Rebased the series on 6.5-rc1.
*) Fixed few formattings.

Changes from v6 to v7 :
*) Added RB tag of Rob in patch 1 of this series.
*) Addressed Simon's comment on patch 2 of the series.
*) Rebased patchset on next-20230428 linux-next.

Changes from v5 to v6 :
*) Added RB tag of Andrew Lunn in patch 2 of this series.
*) Addressed Rob's comment on patch 1 of the series.
*) Rebased patchset on next-20230421 linux-next.

Changes from v4 to v5 :
*) Re-arranged properties section in ti,icssg-prueth.yaml file.
*) Added requirement for minimum one ethernet port.
*) Fixed some minor formatting errors as asked by Krzysztof.
*) Dropped SGMII mode from enum mii_mode as SGMII mode is not currently
   supported by the driver.
*) Added switch-case block to handle different phy modes by ICSSG driver.

Changes from v3 to v4 :
*) Addressed Krzysztof's comments and fixed dt_binding_check errors in
   patch 1/2.
*) Added interrupt-extended property in ethernet-ports properties section.
*) Fixed comments in file icssg_switch_map.h according to the Linux coding
   style in patch 2/2. Added Documentation of structures in patch 2/2.

Changes from v2 to v3 :
*) Addressed Rob and Krzysztof's comments on patch 1 of this series.
   Fixed indentation. Removed description and pinctrl section from
   ti,icssg-prueth.yaml file.
*) Addressed Krzysztof, Paolo, Randy, Andrew and Christophe's comments on
   patch 2 of this seires.
*) Fixed blanklines in Kconfig and Makefile. Changed structures to const
   as suggested by Krzysztof.
*) Fixed while loop logic in emac_tx_complete_packets() API as suggested
   by Paolo. Previously in the loop's last iteration 'budget' was 0 and
   napi_consume_skb would wrongly assume the caller is not in NAPI context
   Now, budget won't be zero in last iteration of loop.
*) Removed inline functions addr_to_da1() and addr_to_da0() as asked by
   Andrew.
*) Added dev_err_probe() instead of dev_err() as suggested by Christophe.
*) In ti,icssg-prueth.yaml file, in the patternProperties section of
   ethernet-ports, kept the port name as "port" instead of "ethernet-port"
   as all other drivers were using "port". Will change it if is compulsory
   to use "ethernet-port".
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Add suspend / resume APIs to support power management in ICSSG ethernet
driver.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add icssg_ethtool.c file. This file will be used for dumping statistics
via ethtool for ICSSG ethernet driver.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Implement .ndo_get_stats64 to dump standard network interface
statistics for ICSSG ethernet driver.
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add icssg_stats.c to help dump, icssg related driver statistics.

ICSSG has hardware registers for providing statistics like total rx bytes,
total tx bytes, etc. These registers are of 32 bits and hence in case of 1G
link, they overflows in around 32 seconds. The behaviour of these registers
is such that they don't roll back to 0 after overflow but rather stay at
UINT_MAX.

These registers support a feature where the value written to them is
subtracted from the register. This feature can be utilized to fix the
overflowing of stats.

This solution uses a Workqueues based solution where a function gets
called before the registers overflow (every 25 seconds in 1G link, 25000
seconds in 100M link), this function saves the register
values in local variables and writes the last read value to the
register. So any update during the read will be taken care of.
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This is the Ethernet driver for TI AM654 Silicon rev. 2
with the ICSSG PRU Sub-system running dual-EMAC firmware.

The Programmable Real-time Unit and Industrial Communication Subsystem
Gigabit (PRU_ICSSG) is a low-latency microcontroller subsystem in the TI
SoCs. This subsystem is provided for the use cases like implementation of
custom peripheral interfaces, offloading of tasks from the other
processor cores of the SoC, etc.

Every ICSSG core has two Programmable Real-Time Unit(PRUs),
two auxiliary Real-Time Transfer Unit (RT_PRUs), and
two Transmit Real-Time Transfer Units (TX_PRUs). Each one of these runs
its own firmware. Every ICSSG core has two MII ports connect to these
PRUs and also a MDIO port.

The cores can run different firmwares to support different protocols and
features like switch-dev, timestamping, etc.

It uses System DMA to transfer and receive packets and
shared memory register emulation between the firmware and
driver for control and configuration.

This patch adds support for basic EMAC functionality with 1Gbps
and 100Mbps link speed. 10M and half duplex mode are not supported
currently as they require IEP, the support for which will be added later.
Support for switch-dev, timestamp, etc. will be added later
by subsequent patch series.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add a YAML binding document for the ICSSG Programmable real time unit
based Ethernet hardware. The ICSSG driver uses the PRU and PRUSS consumer
APIs to interface the PRUs and load/run the firmware for supporting
ethernet functionality.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add icssg_queue.c file. This file introduces macros and APIs related to
ICSSG queues. These will be used by ICSSG Ethernet driver.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add icssg_config.h / .c and icssg_classifier.c files. These are firmware
configuration and classification related files. These will be used by
ICSSG ethernet driver.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add MII helper APIs and MACROs. These APIs and MACROs will be later used
by ICSSG Ethernet driver. Also introduce icssg_prueth.h which has
definition of prueth related structures.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add firmware interface related headers and macros for ICSSG Ethernet
driver. These macros will be later used by the ICSSG ethernet driver.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fixes XAUI/RXAUI lane alignment errors.
Issue causes dropped packets when trying to communicate over
fiber via SERDES lanes of port 9 and 10.
Errata document applies only to 88E6190X and 88E6390X devices.
Requires poking in undocumented registers.
Signed-off-by: Ante Knezic <ante.knezic@helmholz.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Ratheesh Kannoth says:

====================
Packet classify by matching against SPI

1.  net: flow_dissector: Add IPSEC dissector.
Flow dissector patch reads IPSEC headers (ESP or AH) header
from packet and retrieves the SPI header.

2. tc: flower: support for SPI.
TC control path changes to pass SPI field from userspace to
kernel.

3. tc: flower: Enable offload support IPSEC SPI field.
Next patch enables the HW support for classify offload for ESP/AH.
This patch enables the HW offload control.

4. octeontx2-pf: TC flower offload support for SPI field.
HW offload support for classification in octeontx2 driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Driver support to offload TC flower rules which matches
against SPI field of IPSEC packets (AH/ESP).
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch enables offload for TC classifier
flower rules which matches against SPI field.
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tc flower rules support to classify ESP/AH
packets matching SPI field.
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Support for dissecting IPSEC field SPI (which is
32bits in size) for ESP and AH packets.
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Neil Armstrong says:

====================
net: ethernet: dwmac: oxnas glue removal

With [1] removing MPCore SMP support, this makes the OX820 barely usable,
associated with a clear lack of maintainance, development and migration to
dt-schema it's clear that Linux support for OX810 and OX820 should be removed.

In addition, the OX810 hasn't been booted for years and isn't even present
in an ARM config file.

For the OX820, lack of USB and SATA support makes the platform not usable
in the current Linux support and relies on off-tree drivers hacked from the
vendor (defunct for years) sources.

The last users are in the OpenWRT distribution, and today's removal means
support will still be in stable 6.1 LTS kernel until end of 2026.

If someone wants to take over the development even with lack of SMP, I'll
be happy to hand off maintainance.

It has been a fun time adding support for this architecture, but it's time
to get over!

This patchset only removes net changes, and is derived from:
https://lore.kernel.org/r/20230630-topic-oxnas-upstream-remove-v2-0-fb6ab3dea87c@linaro.org

---
Changes in v3:
- Removed applied changes
- Added Andy's tags
- Reduced for net
- Link to v2: https://lore.kernel.org/r/20230630-topic-oxnas-upstream-remove-v2-0-fb6ab3dea87c@linaro.org

Changes in v2:
- s/maintainance/maintenance/
- added acked/review tags
- dropped already applied patches
- drop RFC
- Link to v1: https://lore.kernel.org/r/20230331-topic-oxnas-upstream-remove-v1-0-5bd58fd1dd1f@linaro.org
====================
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Due to lack of maintenance and stall of development for a few years now,
and since no new features will ever be added upstream, remove the
OX810 and OX820 dwmac glue.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Golle <daniel@makrotopia.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Due to lack of maintenance and stall of development for a few years now,
and since no new features will ever be added upstream, remove support
for OX810 and OX820 ethernet.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Golle <daniel@makrotopia.org>
Acked-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Petr Machata says:

====================
selftests: New selftests for out-of-order-operations patches in mlxsw

In the past, the mlxsw driver made the assumption that the user applies
configuration in a bottom-up manner. Thus netdevices needed to be added to
the bridge before IP addresses were configured on that bridge or SVI added
on top of it, because whatever happened before a netdevice was mlxsw upper
was generally ignored by mlxsw. Recently, several patch series were pushed
to introduce the bookkeeping and replays necessary to offload the full
state, not just the immediate configuration step.

In this patchset, introduce new selftests that directly exercise the out of
order code paths in mlxsw.

- Patch #1 adds new tests into the existing selftest router_bridge.sh.
- Patches #2-#5 add new generic selftests.
- Patches #6-#8 add new mlxsw-specific selftests.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

This test verifies driver behavior with regards to creation of RIFs for a
bridge as LAGs are added or removed to/from it, and ports added or removed
to/from the LAG.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This test verifies driver behavior with regards to creation of RIFs for LAG
VLAN uppers as ports are added or removed to/from the LAG.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This test verifies driver behavior with regards to creation of RIFs for a
LAG as ports are added or removed to/from it.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add a selftest to verify that routing through several bridges works when
LAG VLANs are used instead of physical ports, and that routing through LAG
VLANs themselves works as physical ports are de/enslaved.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add a selftest to verify that routing through a bridge works when LAG is
used instead of physical ports.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add a selftest that verifies routing through VLAN bridge uppers.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>