Commit 275e928f ("mlxsw: spectrum: Prevent force of 56G") prevented
the driver from setting a speed of 56G when auto-negotiation is off.
This is the only speed supported by mlxsw that cannot be set when
auto-negotiation is off, which makes it difficult to write generic
tests.

Further, the speed is not supported by newer ASICs such as Spectrum-2
and to the best of our knowledge it is not used by current users.

Therefore, remove 56G support from mlxsw.
Signed-off-by: NAmit Cohen <amitc@mellanox.com>
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Some ethernet drivers may call phy_start() and phy_stop() from
ndo_open() and ndo_close() respectively.

When network cable is unconnected, and operate like below:
step 1: ifconfig ethX up -> ndo_open -> phy_start ->start
autoneg, and phy is no link.
step 2: ifconfig ethX down -> ndo_close -> phy_stop -> just stop
phy state machine.

This patch forces phy suspend even phydev->link is off.
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Reviewed-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Jeff Kirsher says:

====================
100GbE Intel Wired LAN Driver Updates 2019-08-26

This series contains updates to ice driver only.

Usha fixes the statistics reported on 4 port NICs which were reporting
the incorrect statistics due to using the incorrect port identifier.

Victor fixes an issue when trying to traverse to the first node of a
requested layer by adding a sibling head pointer for each layer per
traffic class.

Anirudh cleans up the locking and logic for enabling and disabling
VSI's to make it more consistent.  Updates the driver to do dynamic
allocation of queue management bitmaps and arrays, rather than
statically allocating them which consumes more memory than required.
Refactor the logic in ice_ena_msix_range() for clarity and add
additional checks for when requested resources exceed what is available.

Jesse updates the debugging print statements to make it more useful when
dealing with link and PHY related issues.

Krzysztof adds a local variable to the VSI rebuild path to improve
readability.

Akeem limits the reporting of MDD events from VFs so that the kernel
log is not clogged up with MDD events which are duplicate or potentially
false positives.  Fixed a reset issue that would result in the system
getting into a state that could only be resolved by a reboot by
testing if the VF is in a disabled state during a reset.

Michal adds a check to avoid trying to access memory that has not be
allocated by checking the number of queue pairs.

Jake fixes a static analysis warning due to a cast of a u8 to unsigned
long, so just update ice_is_tc_ena() to take a unsigned long so that a
cast is not necessary.

Colin Ian King fixes a potential infinite loop where a u8 is being
compared to an int.

Maciej refactors the queue handling functions that work on queue arrays
so that the logic can be done for a single queue.

Paul adds support for VFs to enable and disable single queues.

Henry fixed the order of operations in ice_remove() which was trying to
use adminq operations that were already disabled.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Reviewed-by: NRay Jui <ray.jui@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Variable result is being assigned a value that is never read and result
is being re-assigned a little later on. The assignment is redundant
and hence can be removed.

Addresses-Coverity: ("Ununsed value")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove two holes on 64bit arches, to bring the size
to one cache line exactly.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Voon Weifeng says:

====================
stmmac: Add EHL and TGL PCI info and PCI ID

In order to keep PCI info simple and neat, this patch series have
introduced a 3 hierarchy of struct. First layer will be the
intel_mgbe_common_data struct which keeps all Intel common configuration.
Second layer will be xxx_common_data which keeps all the different Intel
microarchitecture, e.g tgl, ehl. The third layer will be configuration
that tied to the PCI ID only based on speed and RGMII/SGMII interface.

EHL and TGL will also having a higher system clock which is 200Mhz.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

EHL DW EQOS is running on a 200MHz clock. Setting up stmmac-clk,
ptp clock and ptp_max_adj to 200MHz.
Signed-off-by: NVoon Weifeng <weifeng.voon@intel.com>
Signed-off-by: NOng Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Added EHL RGMII 1Gbps PCI ID. Different MII and speed will have
different PCI ID.
Signed-off-by: NVoon Weifeng <weifeng.voon@intel.com>
Signed-off-by: NOng Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Added TGL SGMII 1Gbps PCI ID. Different MII and speed will have
different PCI ID.
Signed-off-by: NVoon Weifeng <weifeng.voon@intel.com>
Signed-off-by: NOng Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Added EHL SGMII 1Gbps PCI ID. Different MII and speed will have
different PCI ID.
Signed-off-by: NVoon Weifeng <weifeng.voon@intel.com>
Signed-off-by: NOng Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Marek Behún says:

====================
net: dsa: mv88e6xxx: Peridot/Topaz SERDES changes

this is the fifth version of changes for the Topaz/Peridot family of
switches. The patches apply on net-next.
Changes since v4:
 - added Reviewed-by and Tested-by tags on first 2 patches, the others
   are changed are affected by changes in patch 3/6, so I did not add
   the tags, except for 5/6, which is just macro renaming
 - patch 3 was changed: the serdes_get_lane returns 0 on success (lane
   was discovered), -ENODEV if not lane is present on the port, and
   other error if other error occured. Lane is put into a pointer of
   type u8
 - patches 4 and 6 were affected by this (error detecting from
   serdes_get_lane)
 - Andrew's complaint about the two additional parameters
   (allow_over_2500 and make_cmode_writable) was addressed, by Vivien's
   advice: I put a new method into chip operations structure, named
   port_set_cmode_writable. This is called from mv88e6xxx_port_setup_mac
   just before port_set_cmode. The method is implemented for Topaz.
   The check if cmodes over 2500 should be allowed on given port is now
   done in the specific port_set_cmode() that requires it, thus the
   allow_over_2500 argument is not needed

Again, tested on Turris Mox with Peridot, Topaz, and Peridot + Topaz.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently we support SERDES on the Topaz family in a limited way: no
IRQs and the cmode is not writable, thus the mode is determined by
strapping pins.

Marvell's examples though show how to make cmode writable on port 5 and
support SGMII autonegotiation. It is done by writing hidden registers,
for which we already have code.

This patch adds support for making the cmode for the SERDES port
writable on the Topaz family, via a new chip operation,
.port_set_cmode_writable, which is called from mv88e6xxx_port_setup_mac
just before .port_set_cmode.

SERDES IRQs are also enabled for Topaz.

Tested on Turris Mox.
Signed-off-by: NMarek Behún <marek.behun@nic.cz>
Reviewed-by: NVivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This is a cosmetic update. We are removing the last underscore from
macros MV88E6XXX_PORT_STS_CMODE_100BASE_X and
MV88E6XXX_PORT_STS_CMODE_1000BASE_X. The 2500base-x version does not
have that underscore. Also PHY_INTERFACE_MODE_ macros do not have it
there.
Signed-off-by: NMarek Behún <marek.behun@nic.cz>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

By adding an additional serdes_get_lane implementation (for Topaz), we
can merge the implementations of other SERDES functions (powering and
IRQs). We can skip checking port numbers, since the serdes_get_lane()
methods inform if there is no lane on a port or if the lane cannot be
used for given cmode.
Signed-off-by: NMarek Behún <marek.behun@nic.cz>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Create a serdes_get_lane() method in the mv88e6xxx operations structure.
Use it instead of calling the different implementations.
Also change the methods so that their return value is used only for
error. The lane number is put into a place referred to by a pointer
given as argument. If the port does not have a lane, return -ENODEV.
Lanes are phy addresses, so use u8 as their type.
Signed-off-by: NMarek Behún <marek.behun@nic.cz>
Reviewed-by: NVivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch moves the functions operating on the hidden debug registers
into it's own file, port_hidden.c. The functions prefix is renamed from
mv88e6390_hidden_ to mv88e6xxx_port_hidden_, to be consistent with the
rest of this driver. The macros are prefixed with MV88E6XXX_ prefix, and
are changed not to use the BIT() macro nor bit shifts, since the rest of
the port.h file does not use it.

We also add the support for setting the Block Address field when
operating hidden registers. Marvell's mdio examples for SERDES settings
on Topaz use Block Address 0x7 when reading/writing hidden registers,
and although the specification says that block must be set to 0xf, those
settings are reachable only with Block Address 0x7.
Signed-off-by: NMarek Behún <marek.behun@nic.cz>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Tested-by: NVivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The mv88e6390_serdes_irq_link_sgmii IRQ handler reads the SERDES PHY
status register to determine speed, among other things. If cmode of the
port is set to 2500base-x, though, the PHY still reports 1000 Mbps (the
PHY register itself does not differentiate between 1000 Mbps and 2500
Mbps - it thinks it is running at 1000 Mbps, although clock is 2.5x
faster).
Look at the cmode and set SPEED_2500 if cmode is set to 2500base-x.
Also tell mv88e6xxx_port_setup_mac the PHY interface mode corresponding
to current cmode in terms of phy_interface_t.
Signed-off-by: NMarek Behún <marek.behun@nic.cz>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Tested-by: NVivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Xin Long says:

====================
sctp: add SCTP_ECN_SUPPORTED sockopt

This patchset is to make ecn flag per netns and endpoint and then
add SCTP_ECN_SUPPORTED sockopt, as does for other feature flags.
====================
Acked-by: NNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

SCTP_ECN_SUPPORTED sockopt will be added to allow users to change
ep ecn flag, and it's similar with other feature flags.
Signed-off-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

sysctl net.sctp.ecn_enable is added in this patch. It will allow
users to change the default sctp ecn flag, net.sctp.ecn_enable.

This feature was also required on this thread:

  http://lkml.iu.edu/hypermail/linux/kernel/0812.1/01858.htmlSigned-off-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch is to add ecn flag for both netns_sctp and sctp_endpoint,
net->sctp.ecn_enable is set 1 by default, and ep->ecn_enable will
be initialized with net->sctp.ecn_enable.

asoc->peer.ecn_capable will be set during negotiation only when
ep->ecn_enable is set on both sides.
Signed-off-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/mediatek/mtk_eth_soc.c: In function mtk_handle_irq:
drivers/net/ethernet/mediatek/mtk_eth_soc.c:1951:6: warning: variable status set but not used [-Wunused-but-set-variable]

Fixes: 296c9120 ("net: ethernet: mediatek: Add MT7628/88 SoC support")
Signed-off-by: NMao Wenan <maowenan@huawei.com>
Reviewed-by: NStefan Roese <sr@denx.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Vladimir Oltean says:

====================
Simplify DSA handling of VLAN subinterface offload

Depends on Vivien Didelot's patchset:
https://patchwork.ozlabs.org/project/netdev/list/?series=127197&state=*

This patchset removes a few strange-looking guards for -EOPNOTSUPP in
dsa_slave_vlan_rx_add_vid and dsa_slave_vlan_rx_kill_vid, making that
code path no longer possible.

It also disables the code path for the sja1105 driver, which does
support editing the VLAN table, but not hardware-accelerated VLAN
sub-interfaces, therefore the check in the DSA core would be wrong.
There was no better DSA callback to do this than .port_enable, i.e.
at ndo_open time.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The switch barely supports traffic I/O, and it does that by repurposing
VLANs when there is no bridge that is taking control of them.

Letting DSA declare this netdev feature as supported (see
dsa_slave_create) would mean that VLAN sub-interfaces created on sja1105
switch ports will be hardware offloaded. That means that
net/8021q/vlan_core.c would install the VLAN into the filter tables of
the switch, potentially interfering with the tag_8021q VLANs.

We need to prevent that from happening and not let the 8021q core
offload VLANs to the switch hardware tables. In vlan_filtering=0 modes
of operation, the switch ports can pass through VLAN-tagged frames with
no problem.
Suggested-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NVladimir Oltean <olteanv@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When adding a VLAN sub-interface on a DSA slave port, the 8021q core
checks NETIF_F_HW_VLAN_CTAG_FILTER and, if the netdev is capable of
filtering, calls .ndo_vlan_rx_add_vid or .ndo_vlan_rx_kill_vid to
configure the VLAN offloading.

DSA sets this up counter-intuitively: it always advertises this netdev
feature, but the underlying driver may not actually support VLAN table
manipulation. In that case, the DSA core is forced to ignore the error,
because not being able to offload the VLAN is still fine - and should
result in the creation of a non-accelerated VLAN sub-interface.

Change this so that the netdev feature is only advertised for switch
drivers that support VLAN manipulation, instead of checking for
-EOPNOTSUPP at runtime.
Suggested-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NVladimir Oltean <olteanv@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

René van Dorst says:

====================
net: ethernet: mediatek: convert to PHYLINK

These patches converts mediatek driver to PHYLINK API.

v3->v4:
* Phylink improvements and clean-ups after review
v2->v3:
* Phylink improvements and clean-ups after review
v1->v2:
* Rebase for mt76x8 changes
* Phylink improvements and clean-ups after review
* SGMII port doesn't support 2.5Gbit in SGMII mode only in BASE-X mode.
  Refactor the code.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch the removes the recently added mediatek,physpeed property.
Use the fixed-link property speed = <2500> to set the phy in 2.5Gbit.
See mt7622-bananapi-bpi-r64.dts for a working example.
Signed-off-by: NRené van Dorst <opensource@vdorst.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

* Re-add SGMII support but now with PHYLINK API support
  So the SGMII changes are more clear
* Move SGMII block setup from mtk_gmac_sgmii_path_setup() to
  mtk_mac_config()
* Merge mtk_setup_hw_path() into mtk_mac_config()
* Remove mediatek,physpeed property, fixed-link supports now any speed so
  speed = <2500>; is now valid with PHYLINK
* Demagic SGMII register values
* Use phylink state to setup fixed-link mode
Signed-off-by: NRené van Dorst <opensource@vdorst.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This convert the basics to PHYLINK API.
SGMII support is not in this patch.
Signed-off-by: NRené van Dorst <opensource@vdorst.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Vivien Didelot says:

====================
net: dsa: explicit programmation of VLAN on CPU ports

When a VLAN is programmed on a user port, every switch of the fabric also
program the CPU ports and the DSA links as part of the VLAN. To do that,
DSA makes use of bitmaps to prepare all members of a VLAN.

While this is expected for DSA links which are used as conduit between
interconnected switches, only the dedicated CPU port of the slave must be
programmed, not all CPU ports of the fabric. This may also cause problems in
other corners of DSA such as the tag_8021q.c driver, which needs to program
its ports manually, CPU port included.

We need the dsa_port_vlan_{add,del} functions and its dsa_port_vid_{add,del}
variants to simply trigger the VLAN programmation without any logic in them,
but they may currently skip the operation based on the bridge device state.

This patchset gets rid of the bitmap operations, and moves the bridge device
check as well as the explicit programmation of CPU ports where they belong,
in the slave code.

While at it, clear the VLAN flags before programming a CPU port, as it
doesn't make sense to forward the PVID flag for example for such ports.

Changes in v2: only clear the PVID flag.
====================
Tested-by: NVladimir Oltean <olteanv@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When the bridge offloads a VLAN on a slave port, we also need to
program its dedicated CPU port as a member of the VLAN.

Drivers may handle the CPU port's membership as they want. For example,
Marvell as a special "Unmodified" mode to pass frames as is through
such ports.

Even though DSA expects the drivers to handle the CPU port membership,
it does not make sense to program user VLANs as PVID on the CPU port.
This patch clears this flag before programming the CPU port.
Signed-off-by: NVivien Didelot <vivien.didelot@gmail.com>
Suggested-by: NVladimir Oltean <olteanv@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

DSA currently programs a VLAN on the CPU port implicitly after the
related notifier is received by a switch.

While we still need to do this transparent programmation of the DSA
links in the fabric, programming the CPU port this way may cause
problems in some corners such as the tag_8021q driver.

Because the dedicated CPU port is specific to a slave, make their
programmation explicit a few layers up, in the slave code.

Note that technically, DSA links have a dedicated CPU port as well,
but since they are only used as conduit between interconnected switches
of a fabric, programming them transparently this way is what we want.
Signed-off-by: NVivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The bridge VLANs are not offloaded by dsa_port_vlan_* if the port is
not bridged or if its bridge is not VLAN aware.

This is a good thing but other corners of DSA, such as the tag_8021q
driver, may need to program VLANs regardless the bridge state.

And also because bridge_dev is specific to user ports anyway, move
these checks were it belongs, one layer up in the slave code.
Signed-off-by: NVivien Didelot <vivien.didelot@gmail.com>
Suggested-by: NVladimir Oltean <olteanv@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add dsa_slave_vlan_add and dsa_slave_vlan_del helpers to handle
SWITCHDEV_OBJ_ID_PORT_VLAN switchdev objects. Also copy the
switchdev_obj_port_vlan structure on add since we will modify it in
future patches.
Signed-off-by: NVivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently dsa_port_vid_add returns 0 if the switch returns -EOPNOTSUPP.

This function is used in the tag_8021q.c code to offload the PVID of
ports, which would simply not work if .port_vlan_add is not supported
by the underlying switch.

Do not skip -EOPNOTSUPP in dsa_port_vid_add but only when necessary,
that is to say in dsa_slave_vlan_rx_add_vid.
Signed-off-by: NVivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>