Grygorii Strashko says:

====================
net: ethernet: ti: introduce new cpsw switchdev based driver

Thank you All for review of v6.

There are no significant changes in this version, just fixed comments to v6.

--- v6
The major change in this version is DT bindings conversation to json-schema, and
fixed other comments to v5. Also added patch to clean up ALE on init and netif
restart.

--- v5
The major part of work done in this iteration is rebasing on top of net-next
with XDP series from Ivan Khoronzhuk [3], and enable XDP support in the new
CPSW switchdev driver (it was little bit painful ;(). There are mostly no
functional changes in new CPSW driver, just few fixes, sync with old driver
and cleanups/optimizations. So, I've kept rest of cover letter unchanged.

---
This series originally based on work [1][2] done by
Ilias Apalodimas <ilias.apalodimas@linaro.org>.

This the RFC v5 which introduces new CPSW switchdev based driver which is
operating in dual-emac mode by default, thus working as 2 individual
network interfaces. The Switch mode can be enabled by configuring devlink driver
parameter "switch_mode" to 1/true:
	devlink dev param set platform/48484000.switch \
	name switch_mode value 1 cmode runtime
This can be done regardless of the state of Port's netdev devices - UP/DOWN, but
Port's netdev devices have to be in UP before joining the bridge to avoid
overwriting of bridge configuration as CPSW switch driver completely reloads its
configuration when first Port changes its state to UP.
When the both interfaces joined the bridge - CPSW switch driver will start
marking packets with offload_fwd_mark flag unless "ale_bypass=0".
All configuration is implemented via switchdev API.

The previous solution of tracking both Ports joined the bridge
(from netdevice_notifier) proved to be not correct as changing CPSW switch
driver mode required cleanup of ALE table and CPSW settings which happens
while second Port is joined bridge and as result configuration loaded
by bridge for the first Port became corrupted.

The introduction of the new CPSW switchdev based driver (cpsw_new.c) is split
on two parts: Part 1 - basic dual-emac driver; Part 2 switchdev support.
Such approach has simplified code development and testing alot. And, I hope,
it will help with better review.

patches #1 - 5: preparation patches which also moves common code to cpsw_priv.c
patches #6 - 9: Introduce TI CPSW switch driver based on switchdev and new
 DT bindings
patch #10: new CPSW switchdev driver documentation
patch #11: adds DT nodes for new CPSW switchdev driver added for DRA7 SoC
patch #12: adds DT nodes for new cpsw switchdev driver for am571x-idk board
patch #13: enables build of TI CPSW driver

Most of the contents of the previous cover-letter have been added in
new driver documentation, so please refer to that for configuration,
testing and future work.

These patches can be found at (branch contains some additional patches required
for testing on top of net-next):
 https://github.com/grygoriyS/linux.git
 branch: lkml-5.4-switch-tbd-v7

changes in v7:
 - patch 2: added check for devm_kmalloc_array() return value
 - patch 6: fixed comments

changes in v6: https://lkml.org/lkml/2019/11/9/108
 - DT bindings converted to json-schema
 - netdev initialization is split on creation and registration.
   The netdevs registration happens now at the end of the pobe.
 - reworked cpsw_set_pauseparam() to use PHYlib APIs.
 - other comments for v5 fixed

v5: https://patchwork.kernel.org/cover/11208785/
 - rebase on top of net-next with XDP series from Ivan Khoronzhuk [3],
   and enable XDP support in the new CPSW switchdev driver
   cpsw driver (tested XDP_DROP only)
 - sync with old cpsw driver
 - implement comments from  Ivan Khoronzhuk and Rob Herring
 - fixed "NETDEV WATCHDOG: .." warning after interface after interface UP/DOWN,
   missed TX wake in cpsw_adjust_link()

v4: https://patchwork.kernel.org/cover/11010523/
 - finished split of common CPSW code
 - added devlink support
 - changed CPSW mode configuration approach: from netdevice_notifier to devlink
   parameter
 - refactor and clean up ALE changes which allows to modify VLANs/MDBs entries
 - added missed support for port QDISC_CBS and QDISC_MQPRIO
 - the CPSW is split on two parts: basic dual_mac driver and switchdev support
 - added missed callback .ndo_get_port_parent_id()
 - reworked ingress frames marking in switch mode (offload_fwd_mark)
 - applied comments from Andrew Lunn

v3: https://lwn.net/Articles/786677/
Changes in v3:
- alot of work done to split properly common code between legacy and switchdev
  CPSW drivers and clean up code
- CPSW switchdev interface updated to the current LKML switchdev interface
- actually new CPSW switchdev based driver introduced
- optimized dual_mac mode in new driver. Main change is that in promiscuous
mode P0_UNI_FLOOD (both ports) is enabled in addition to ALLMULTI (current
port) instead of ALE_BYPASS.  So, port in non promiscuous mode will keep
possibility of mcast and vlan filtering.
- changed bridge join sequnce: now switch mode will be enabled only when
both ports joined the bridge. CPSW will be switched to dual_mac mode if any
port leave bridge. ALE table is completly cleared and then refiled while
switching to switch mode - this simplidies code a lot, but introduces some
limitation to bridge setup sequence:
 ip link add name br0 type bridge
 ip link set dev br0 type bridge ageing_time 1000
 ip link set dev br0 type bridge vlan_filtering 0 <- disable
 echo 0 > /sys/class/net/br0/bridge/default_vlan

 ip link set dev sw0p1 up <- add ports
 ip link set dev sw0p2 up
 ip link set dev sw0p1 master br0
 ip link set dev sw0p2 master br0

 echo 1 > /sys/class/net/br0/bridge/default_vlan <- enable
 ip link set dev br0 type bridge vlan_filtering 1
 bridge vlan add dev br0 vid 1 pvid untagged self
- STP tested with vlan_filtering 1/0. To make STP work I've had to set
  NO_SA_UPDATE for all slave ports (see comment in code). It also required to
  statically register STP mcast address {0x01, 0x80, 0xc2, 0x0, 0x0, 0x0};
- allowed build both TI_CPSW and TI_CPSW_SWITCHDEV drivers
- PTP can be enabled on both ports in dual_mac mode

[1] https://patchwork.ozlabs.org/cover/929367/
[2] https://patches.linaro.org/cover/136709/
[3] https://patchwork.kernel.org/cover/11035813/
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Add CONFIG_TI_CPSW_SWITCHDEV option to enable new cpsw switchdev driver
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add DT nodes for new cpsw switchdev driver for am571x-idk board for now to
enable testing of the new solution.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add DT nodes for new cpsw switch dev driver.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

A new cpsw dirver based on switchdev was added. Add documentation about
basic configuration and future features
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add dependency from TI_CPSW_SWITCHDEV.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

CPSW switchdev based driver which is operating in dual-emac mode by
default, thus working as 2 individual network interfaces. The Switch mode
can be enabled by configuring devlink driver parameter "switch_mode" to 1:

	devlink dev param set platform/48484000.switch \
	name switch_mode value 1 cmode runtime

This can be done regardless of the state of Port's netdevs - UP/DOWN, but
Port's netdev devices have to be UP before joining the bridge to avoid
overwriting of bridge configuration as CPSW switch driver completely
reloads its configuration when first Port changes its state to UP.
When the both interfaces joined the bridge - CPSW switch driver will start
marking packets with offload_fwd_mark flag unless "ale_bypass=0".

All configuration is implemented via switchdev API and notifiers.
Supported:
 - SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS
 - SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: BR_MCAST_FLOOD
 - SWITCHDEV_ATTR_ID_PORT_STP_STATE
 - SWITCHDEV_OBJ_ID_PORT_VLAN
 - SWITCHDEV_OBJ_ID_PORT_MDB
 - SWITCHDEV_OBJ_ID_HOST_MDB

Hence CPSW switchdev driver supports:
- FDB offloading
- MDB offloading
- VLAN filtering and offloading
- STP
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Part 1:
 Introduce basic CPSW dual_mac driver (cpsw_new.c) which is operating in
dual-emac mode by default, thus working as 2 individual network interfaces.
Main differences from legacy CPSW driver are:

 - optimized promiscuous mode: The P0_UNI_FLOOD (both ports) is enabled in
addition to ALLMULTI (current port) instead of ALE_BYPASS. So, Ports in
promiscuous mode will keep possibility of mcast and vlan filtering, which
is provides significant benefits when ports are joined to the same bridge,
but without enabling "switch" mode, or to different bridges.
 - learning disabled on ports as it make not too much sense for
   segregated ports - no forwarding in HW.
 - enabled basic support for devlink.

	devlink dev show
		platform/48484000.switch

	devlink dev param show
	 platform/48484000.switch:
	name ale_bypass type driver-specific
	 values:
		cmode runtime value false

 - "ale_bypass" devlink driver parameter allows to enable
ALE_CONTROL(4).BYPASS mode for debug purposes.
 - updated DT bindings.
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add bindings for the new TI CPSW switch driver. Comparing to the legacy
bindings (net/cpsw.txt):
- ports definition follows DSA bindings (net/dsa/dsa.txt) and ports can be
marked as "disabled" if not physically wired.
- all deprecated properties dropped;
- all legacy propertiies dropped which represent constant HW cpapbilities
(cpdma_channels, ale_entries, bd_ram_size, mac_control, slaves,
active_slave)
- TI CPTS DT properties are reused as is, but grouped in "cpts" sub-node
- TI Davinci MDIO DT bindings are reused as is, because Davinci MDIO is
reused.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

As a preparatory patch to add support for a switchdev based cpsw driver,
move common functions to cpsw-priv.c so that they can be used across both
drivers.
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

A following patches introduce new CPSW switchdev driver which uses common
code with legacy CPSW driver. This will introduce build dependency between
CPSW switchdev and CPSW legacy drivers related to for_each_slave() and
cpsw_slave_index() - they can be compiled both, but only one of them will
be not functional depending in Kconfig settings due to duffrences in Slave
Ports indexes calculation.

To fix this make for_each_slave() local (it's used now only by legacy CPSW
driver) and convert cpsw_slave_index() to be a function pointer which is
assigned in probe. Driver to probe is defined by DT.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

A following patch introduces switchdev functionality, so modify
ALE engine VLANs/MDBs API:
- cpsw_ale_del_mcast(): update so it will remove only selected ports from
mcast port_mask or delete whole mcast record if !port_mask
- cpsw_ale_del_vlan(): update so it will remove only selected ports from
all VLAN record's masks or delete whole VLAN record if !port_mask
- add cpsw_ale_vlan_add_modify() to add or modify existing VLAN record's
masks
- add cpsw_ale_set_unreg_mcast() for enabling unreg mcast on port VLANs
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Now untagged vlan traffic is not support on Host P0 port. This patch adds
in ALE context bitmap of VLANs for which Host P0 port bit set in Force
Untagged Packet Egress bitmask in VLANs ALE entries, and adds corresponding
check in VLAN incapsulation header parsing function cpsw_rx_vlan_encap().
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Clean CPSW ALE on init and intf restart (up/down) to avoid reading obsolete
or garbage entries from ALE table.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pablo Neira Ayuso says:

====================
nf_tables_offload: vlan matching support

The following patchset contains Netfilter support for vlan matching
offloads:

1) Constify nft_reg_load() as a preparation patch.
2) Restrict rule matching to ingress interface type ARPHRD_ETHER.
3) Add new vlan_tci field to flow_dissector_key_vlan structure,
   to allow to set up vlan_id, vlan_dei and vlan_priority in one go.
4) C-VLAN matching support.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Match on h_vlan_encapsulated_proto and set up protocol dependency. Check
for protocol dependency before accessing the tci field. Allow to match
on the encapsulated ethertype too.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Match on ethertype and set up protocol dependency. Check for protocol
dependency before accessing the tci field. Allow to match on the
encapsulated ethertype too.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Hardware offload support at this stage assumes an ethernet device in
place. The flow dissector provides the intermediate representation to
express this selector, so extend it to allow to store the interface
type. Flower does not uses this, so skb_flow_dissect_meta() is not
extended to match on this new field.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch constifies the pointer to source register data that is passed
as an input parameter.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

geneve RFC (draft-ietf-nvo3-geneve-14) allows a geneve packet to carry
multiple geneve opts, so it's necessary for lwtunnel to support adding
multiple geneve opts in one lwtunnel route. But vxlan and erspan opts
are still only allowed to add one option.

With this patch, iproute2 could make it like:

  # ip r a 1.1.1.0/24 encap ip id 1 geneve_opts 0:0:12121212,1:2:12121212 \
    dst 10.1.0.2 dev geneve1

  # ip r a 1.1.1.0/24 encap ip id 1 vxlan_opts 456 \
    dst 10.1.0.2 dev erspan1

  # ip r a 1.1.1.0/24 encap ip id 1 erspan_opts 1:123:0:0 \
    dst 10.1.0.2 dev erspan1

Which are pretty much like cls_flower and act_tunnel_key.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Semicolon is not required at the end of switch block. So, remove it.

Addresses coccinelle warning:
drivers/net/ethernet/chelsio/cxgb4/sge.c:2260:2-3: Unneeded semicolon

Fixes: 4846d533 ("cxgb4: add Tx and Rx path for ETHOFLD traffic")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

On the NXP LS1028A, there are 2 Ethernet links between the Felix switch
and the ENETC:
- eno2 <-> swp4, at 2.5G
- eno3 <-> swp5, at 1G

Only one of the above Ethernet port pairs can act as a DSA link for
tagging.

When adding initial support for the driver, it was tested only on the 1G
eno3 <-> swp5 interface, due to the necessity of using PHYLIB initially
(which treats fixed-link interfaces as emulated C22 PHYs, so it doesn't
support fixed-link speeds higher than 1G).

After making PHYLINK work, it appears that swp4 still can't act as CPU
port. So it looks like ocelot_set_cpu_port was being called for swp4,
but then it was called again for swp5, overwriting the CPU port assigned
in the DT.

It appears that when you call dsa_upstream_port for a port that is not
defined in the device tree (such as swp5 when using swp4 as CPU port),
its dp->cpu_dp pointer is not initialized by dsa_tree_setup_default_cpu,
and this trips up the following condition in dsa_upstream_port:

	if (!cpu_dp)
		return port;

So the moral of the story is: don't call dsa_upstream_port for a port
that is not defined in the device tree, and therefore its dsa_port
structure is not completely initialized (ds->num_ports is still 6).

Fixes: 56051948 ("net: dsa: ocelot: add driver for Felix switch family")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In the case where the call to phy_interface_is_rgmii returns zero
the variable ret is left uninitialized and this is returned at
the end of the function dp83869_configure_rgmii.  Fix this by
returning 0 instead of the uninitialized value in ret.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: 01db923e ("net: phy: dp83869: Add TI dp83869 phy")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

LWTUNNEL_IP_OPT_ERSPAN_VER is u8 type, and nla_put_u8 should have
been used instead of nla_put_u32(). This is a copy-paste error.

Fixes: b0a21810 ("lwtunnel: add options setting and dumping for erspan")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Michael Chan says:

====================
bnxt_en: Updates.

This series has the firmware interface update that changes the aRFS/ntuple
interface on 57500 chips.  The 2nd patch adds a counter and improves
the hardware buffer error handling on the 57500 chips.  The rest of the
series is mainly enhancements on error recovery and firmware reset.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

This is especially beneficial during the NVRAM related firmware
commands that have longer timeouts.  If the BNXT_STATE_FW_FATAL_COND
flag gets set while waiting for firmware response, abort and return
error.
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

During loss of heartbeat, log this warning message.
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

For NVM params that are not supported in the current NVM
configuration, return the error as -EOPNOTSUPP.
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Report health status update to devlink health reporter, once
reset is completed.

Cc: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The Linux driver is capable of being the master function to handle
resets, so we set the flag to let firmware know.  Some other
drivers, such as DPDK, is not capable and will not set the flag.
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If firmware supports hot reset, extend ETHTOOL_RESET to support
hot reset driver which does not require a driver reload after
ETHTOOL_RESET.  The driver will go through the same coordinated
reset sequence as a firmware initiated fatal/non-fatal reset.
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Use the larger HWRM_COREDUMP_TIMEOUT value for coredump related
data response from the firmware.  These commands take longer than
normal commands.
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When hardware reports RX buffer errors, the latest 57500 chips do not
require reset.  The packet is discarded by the hardware and the
ring will continue to operate.

Also, add an rx_buf_errors counter for this type of error.  It can help
the user to identify if the aggregation ring is too small.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The aRFS ring table interface has changed for the 57500 chips.  Updating
it accordingly so it will work with the latest production firmware.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Ido Schimmel says:

====================
selftests: Add ethtool and scale tests

This patch set adds generic ethtool tests and a mlxsw-specific router
scale test for Spectrum-2.

Patches #1-#2 from Danielle add the router scale test for Spectrum-2. It
re-uses the same test as Spectrum-1, but it is invoked with a different
scale, according to what it is queried from devlink-resource.

Patches #3-#5 from Amit are a re-work of the ethtool tests that were
posted in the past [1]. Patches #3-#4 add the necessary library
routines, whereas patch #5 adds the test itself. The test checks both
good and bad flows with autoneg on and off. The test plan it detailed in
the commit message.

Last time Andrew and Florian (copied) provided very useful feedback that
is incorporated in this set. Namely:

* Parse the value of the different link modes from
  /usr/include/linux/ethtool.h
* Differentiate between supported and advertised speeds and use the
  latter in autoneg tests
* Make the test generic and move it to net/forwarding/ instead of being
  mlxsw-specific

[1] https://patchwork.ozlabs.org/cover/1112903/
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Check configurations and packets transference with different variations
of autoneg and speed.

Test plan:
1. Test force of same speed with autoneg off
2. Test force of different speeds with autoneg off (should fail)
3. One side is autoneg on and other side sets force of common speeds
4. One side is autoneg on and other side only advertises a subset of the
   common speeds (one speed of the subset)
5. One side is autoneg on and other side only advertises a subset of the
   common speeds. Check that highest speed is negotiated
6. Test autoneg on, but each side advertises different speeds (should
   fail)
Signed-off-by: Amit Cohen <amitc@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add a function that waits for device with maximum number of iterations.
It enables to limit the waiting and prevent infinite loop.

This will be used by the subsequent patch which will set two ports to
different speeds in order to make sure they cannot negotiate a link.

Waiting for all the setup is limited with 10 minutes for each device.
Signed-off-by: Amit Cohen <amitc@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Functions:
1. speeds_arr_get
	The function returns an array of speed values from
        /usr/include/linux/ethtool.h The array looks as follows:
	[10baseT/Half] = 0,
	[10baseT/Full] = 1,
	...

2. ethtool_set:
	params: cmd
	The function runs ethtool by cmd (ethtool -s cmd) and checks if
	there was an error in configuration

3. dev_speeds_get:
	params: dev, with_mode (0 or 1), adver (0 or 1)
	return value: Array of supported/Advertised link modes
	with/without mode

	* Example 1:
	speeds_get swp1 0 0
	return: 1000 10000 40000
	* Example 2:
	speeds_get swp1 1 1
	return: 1000baseKX/Full 10000baseKR/Full 40000baseCR4/Full

4. common_speeds_get:
	params: dev1, dev2, with_mode (0 or 1), adver (0 or 1)
	return value: Array of common speeds of dev1 and dev2

	* Example:
	common_speeds_get swp1 swp2 0 0
	return: 1000 10000
	Assuming that swp1 supports 1000 10000 40000 and swp2 supports
	1000 10000
Signed-off-by: Amit Cohen <amitc@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The scale test for Spectrum-2 should only be invoked for Spectrum-2.
Skip the test otherwise.
Signed-off-by: Danielle Ratson <danieller@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Same as for Spectrum-1, test the ability to add the maximum number of
routes possible to the switch.

Invoke the test from the 'resource_scale' wrapper script.
Signed-off-by: Danielle Ratson <danieller@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>