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There is a use after free scenario while iterating through the servers
radix tree despite the ns being a single threaded process. This can
happen when the radix tree APIs are not synchronized with the
rcu_read_lock() APIs.
Convert the radix tree for servers to xarray to take advantage of the
built in rcu lock usage provided by xarray.
Signed-off-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Vignesh Viswanathan <quic_viswanat@quicinc.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Justin Chen says:
====================
Brcm ASP 2.0 Ethernet Controller
Add support for the Broadcom ASP 2.0 Ethernet controller which is first
introduced with 72165.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add maintainers entry for ASP 2.0 Ethernet driver.
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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74165 is a 16nm process SoC with a 10/100 integrated Ethernet PHY,
utilize the recently defined 16nm EPHY macro to configure that PHY.
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add mdio compat string for ASP 2.0 ethernet driver.
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for ethernet driver specific stats.
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for eth_mac_stats, rmon_stats, and eth_ctrl_stats.
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for eee mode.
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for wake on network filters. The max match is 256 bytes.
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for Wake-On-Lan magic packet and magic packet with password.
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for the Broadcom ASP 2.0 Ethernet controller which is first
introduced with 72165. This controller features two distinct Ethernet
ports that can be independently operated.
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a binding document for the Broadcom ASP 2.0 Ethernet
controller.
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ASP 2.0 Ethernet controller uses a brcm unimac.
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Rename local `struct fec_enet_private *adapter` to `fep` in `fec_ptp_gettime()` to match the rest of the driver
Signed-off-by: Csókás Bence <csokas.bence@prolan.hu>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Spotted this trivial spell mistake while casually reading
the google GVE driver code.
Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Petr Machata says:
====================
mlxsw: Manage RIF across PVID changes
The mlxsw driver currently makes the assumption that the user applies
configuration in a bottom-up manner. Thus netdevices need to be added to
the bridge before IP addresses are configured on that bridge or SVI added
on top of it. Enslaving a netdevice to another netdevice that already has
uppers is in fact forbidden by mlxsw for this reason. Despite this safety,
it is rather easy to get into situations where the offloaded configuration
is just plain wrong.
As an example, take a front panel port, configure an IP address: it gets a
RIF. Now enslave the port to the bridge, and the RIF is gone. Remove the
port from the bridge again, but the RIF never comes back. There is a number
of similar situations, where changing the configuration there and back
utterly breaks the offload.
The situation is going to be made better by implementing a range of replays
and post-hoc offloads.
In this patch set, address the ordering issues related to creation of
bridge RIFs. Currently, mlxsw has several shortcomings with regards to RIF
handling due to PVID changes:
- In order to cause RIF for a bridge device to be created, the user is
expected first to set PVID, then to add an IP address. The reverse
ordering is disallowed, which is not very user-friendly.
- When such bridge gets a VLAN upper whose VID was the same as the existing
PVID, and this VLAN netdevice gets an IP address, a RIF is created for
this netdevice. The new RIF is then assigned to the 802.1Q FID for the
given VID. This results in a working configuration. However, then, when
the VLAN netdevice is removed again, the RIF for the bridge itself is
never reassociated to the PVID.
- PVID cannot be changed once the bridge has uppers. Presumably this is
because the driver does not manage RIFs properly in face of PVID changes.
However, as the previous point shows, it is still possible to get into
invalid configurations.
This patch set addresses these issues and relaxes some of the ordering
requirements that mlxsw had. The patch set proceeds as follows:
- In patch #1, pass extack to mlxsw_sp_br_ban_rif_pvid_change()
- To relax ordering between setting PVID and adding an IP address to a
bridge, mlxsw must be able to request that a RIF is created with a given
VLAN ID, instead of trying to deduce it from the current netdevice
settings, which do not reflect the user-requested values yet. This is
done in patches #2 and #3.
- Similarly, mlxsw_sp_inetaddr_bridge_event() will need to make decisions
based on the user-requested value of PVID, not the current value. Thus in
patches #4 and #5, add a new argument which carries the requested PVID
value.
- Finally in patch #6 relax the ban on PVID changes when a bridge has
uppers. Instead, add the logic necessary for creation of a RIF as a
result of PVID change.
- Relevant selftests are presented afterwards. In patch #7 a preparatory
helper is added to lib.sh. Patches #8, #9, #10 and #11 include selftests
themselves.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This tests whether addition and deletion of a VLAN upper that coincides
with the current PVID setting throws off forwarding.
This selftests is specifically geared towards offloading drivers. In
particular, mlxsw used to fail this selftest, and an earlier patch in this
patchset fixes the issue. However, there's nothing HW-specific in the test
itself (it absolutely is supposed to pass on SW datapath), and therefore it
is put into the generic forwarding directory.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This tests whether changes to PVID that coincide with an existing VLAN
upper throw off forwarding. This selftests is specifically geared towards
offloading drivers, but since there's nothing HW-specific in the test
itself (it absolutely is supposed to pass on SW datapath), it is put into
the generic forwarding directory.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add an alternative path involving VLAN 777 instead of the current 555. Then
add tests that verify that marking 777 as PVID makes the 555 path not work,
and the 777 path work.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This test relies on PVID being configured on the bridge itself. Thus when
it is deconfigured, the system should lose the ability to forward traffic.
Later when it is added again, the ability to forward traffic should be
regained. Add tests to exercise these configuration changes and verify
results.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add two helpers to run a ping test that succeeds when the pings themselves
fail.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, mlxsw has several shortcomings with regards to RIF handling due
to PVID changes:
- In order to cause RIF for a bridge device to be created, the user is
expected first to set PVID, then to add an IP address. The reverse
ordering is disallowed, which is not very user-friendly.
- When such bridge gets a VLAN upper whose VID was the same as the existing
PVID, and this VLAN netdevice gets an IP address, a RIF is created for
this netdevice. The new RIF is then assigned to the 802.1Q FID for the
given VID. This results in a working configuration. However, then, when
the VLAN netdevice is removed again, the RIF for the bridge itself is
never reassociated to the VLAN.
- PVID cannot be changed once the bridge has uppers. Presumably this is
because the driver does not manage RIFs properly in face of PVID changes.
However, as the previous point shows, it is still possible to get into
invalid configurations.
In this patch, add the logic necessary for creation of a RIF as a result of
PVID change. Moreover, when a VLAN upper is created whose VID matches lower
PVID, do not create RIF for this netdevice.
These changes obviate the need for ordering of IP address additions and
PVID configuration, so stop forbidding addition of an IP address to a
PVID-less bridge. Instead, bail out quietly. Also stop preventing PVID
changes when the bridge has 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>
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For purposes of replay, mlxsw_sp_inetaddr_bridge_event() will need to make
decisions based on the proposed value of PVID. Querying PVID reveals the
current settings, not the in-flight values that the user requested and that
the notifiers are acting upon. Add a parameter, lower_pvid, which carries
the proposed PVID of the lower bridge, or -1 if the lower is not a bridge.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The bridge branch of the dispatch in this function is going to get more
code and will need curly braces. Per the doctrine, that means the whole
if-else chain should get them.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, when an IP address is added to a bridge that has no PVID, the
operation is rejected. An IP address addition is interpreted as a request
to create a RIF for the bridge device, but without a PVID there is no VLAN
for which the RIF should be created. Thus the correct way to create a RIF
for a bridge as a user is to first add a PVID, and then add the IP address.
Ideally this ordering requirement would not exist. RIF would be created
either because an IP address is added, or because a PVID is added,
depending on which comes last.
For that, the switchdev code (which notices the PVID change request) must
be able to request that a RIF is created with a given VLAN ID, because at
the time that the PVID notification is distributed, the PVID setting is not
yet visible for querying.
Therefore when creating a VLAN-based RIF, use mlxsw_sp_rif_params.vid to
communicate the VID, and do not determine it ad-hoc in the fid_get
callback.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The fid_get callback is called to allocate a FID for the newly-created RIF.
In a following patch, the fid_get implementation for VLANs will be modified
to take the VLAN ID from the parameters instead of deducing it from the
netdevice. To that end, propagate the RIF parameters to the fid_get
callback.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently the reason for rejection of PVID manipulation is dumped to
syslog, and a generic -EBUSY is returned to the userspace. But
switchdev_handle_port_obj_add(), through which we get to
mlxsw_sp_port_vlans_add(), handles extack just fine, and we can pass the
message this way.
This improves visibility into reasons why the request to change PVID
was rejected. Before the change:
# bridge vlan add dev br vid 2 self pvid untagged
RTNETLINK answers: Device or resource busy
(plus a syslog line)
After the change:
# bridge vlan add dev br vid 2 self pvid untagged
Error: mlxsw_spectrum: Can't change PVID, it's used by router interface.
Note that this particular error message is going away in the following
patches. However the ability to pass error messages through extack will be
useful more broadly for communicating in particular reasons why a RIF
failed to be created.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Sabrina Dubroca says:
====================
net: add MACsec offload selftests
Patch 1 adds MACsec offload to netdevsim (unchanged from v2).
Patch 2 adds a corresponding selftest to the rtnetlink testsuite.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Like the IPsec offload test, this requires netdevsim.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When the kernel is compiled with MACsec support, add the
NETIF_F_HW_MACSEC feature to netdevsim devices and implement
macsec_ops.
To allow easy testing of failure from the device, support is limited
to 3 SecY's per netdevsim device, and 1 RXSC per SecY.
v2:
- nsim_macsec_add_secy, return -ENOSPC if secy_count isn't full but
we can't find an empty slot (Simon Horman)
- add sci_to_cpu to make sparse happy (Simon Horman)
- remove set but not used secy variable (kernel test robot and
Simon Horman)
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The checks in question were introduced by:
commit 6b4db2e528f6 ("devlink: Fix use-after-free after a failed reload").
That fixed an issue of reload with mlxsw driver.
Back then, that was a valid fix, because there was a limitation
in place that prevented drivers from registering/unregistering params
when devlink instance was registered.
It was possible to do the fix differently by changing drivers to
register/unregister params in appropriate places making sure the ops
operate only on memory which is allocated and initialized. But that,
as a dependency, would require to remove the limitation mentioned above.
Eventually, this limitation was lifted by:
commit 1d18bb1a4ddd ("devlink: allow registering parameters after the instance")
Also, the alternative fix (which also fixed another issue) was done by:
commit 74cbc3c03c82 ("mlxsw: spectrum_acl_tcam: Move devlink param to TCAM code").
Therefore, the checks are no longer relevant. Each driver should make
sure to have the params registered only when the memory the ops
are working with is allocated and initialized.
So remove the checks.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Russell King says:
====================
Convert mv88e6xxx to phylink_pcs
This series (previously posted with further patches on the 26 June as
RFC) converts mv88e6xxx to phylink_pcs, and thus moves it from being
a pre-March 2020 legacy driver.
The first four patches lay the ground-work for the conversion by
adding four new methods to the phylink_pcs operations structure:
pcs_enable() - called when the PCS is going to start to be used
pcs_disable() - called when the PCS is no longer being used
pcs_pre_config() - called before the MAC configuration method
pcs_post_config() - called after the MAC configuration method
Both of these are necessary for some of the mv88e639x
workarounds.
We also add the ability to inform phylink of a change to the PCS
state without involving the MAC later, by providing
phylink_pcs_change() which takes a phylink_pcs structure rather than
a phylink structure. phylink maintains which instance the PCS is
conencted to, so internally it can do the right thing when the PCS
is in-use.
Then we provide some additional mdiobus and mdiodev accessors that
we will be using in the new PCS drivers.
The changes for mv88e6xxx follow, and the first one needs to be
explicitly pointed out - we (Andrew and myself) have both decided that
all possible approaches to maintaining backwards compatibility with DT
have been exhaused - everyone has some objection to everything that
has been proposed. So, after many years of trying, we have decided
that this is just an impossibility, and with this patch, we are now
intentionally and knowingly breaking any DT that does not specify the
CPU and DSA port fixed-link parameters. Hence why Andrew has recently
been submitting DT update patches. It is regrettable that it has come
to this.
Following this, we start preparing 88e6xxx for phylink_pcs conversion
by padding the mac_select_pcs() DSA method, and the internal hooks to
create and tear-down PCS instances. Rather than bloat the already very
large mv88e6xxx_ops structure, I decided that it would be better that
the new internal chip specific PCS methods are all grouped within their
own structure - and this structure can be declared in the PCS drivers
themselves.
Then we have the actual conversion patches, one for each family of PCS.
Lastly, we clean up the driver after conversion, removing all the now
redundant code.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that mv88e6xxx is completely converted to using phylink_pcs
support, we have no need for the serdes methods. Remove all this
infrastructure. Also remove the __maybe_unused from
mv88e6xxx_pcs_select().
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert the 88E6390, 88E6390X, and 88E6393X family of switches to use
the phylink_pcs infrastructure.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert the 88E6352 SERDES code to use the phylink_pcs infrastructure.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert the 88E6185 SERDES code to use the phylink_pcs infrastructure.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Rename and export the PCS state decoding function so our PCS can
make use of the functionality provided by this.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add infrastructure for phylink_pcs to the mv88e6xxx driver. This
involves adding a mac_select_pcs() hook so we can pass the PCS to
phylink at the appropriate time, and a PCS initialisation function.
As the various chip implementations are converted to use phylink_pcs,
they are no longer reliant on the legacy phylink behaviour. We detect
this by the use of this infrastructure, or the lack of any serdes.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As we now always use a fixed-link for DSA and CPU ports, we no longer
need the hack in the Marvell code to make this work. Remove it.
This is especially important with the conversion of DSA drivers to
phylink_pcs, as the PCS code only gets called if we are using
phylink for the port.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the following unlocked accessors to complete the set:
__mdiobus_modify()
__mdiodev_read()
__mdiodev_write()
__mdiodev_modify()
__mdiodev_modify_changed()
which we will need for Marvell DSA PCS conversion.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a function, phylink_pcs_change() which can be used by PCs drivers
to notify phylink about changes to the PCS link state.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add hooks that are called before and after the mac_config() call,
which will be needed to deal with errata workarounds for the
Marvell 88e639x DSA switches.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add phylink PCS enable/disable callbacks that will allow us to place
IEEE 802.3 register compliant PCS in power-down mode while not being
used.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Implement ethtool_ops get_wol and set_wol.
Implement Wake-on-LAN support.
Wol requires hardware board support which use sub id
to identify.
Magic packets are checked by fw, for now just support
WAKE_MAGIC.
Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We now have a regmap cache which uses a maple tree to store the register
state, this is a more modern data structure and the regmap level code
using it makes a number of assumptions better tuned for modern hardware
than those made by the rbtree cache type that the at9331 driver uses.
Switch the ar9331 driver to use the more modern data structure.
This should have minimal practical impact, it's mainly code
modernisation.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Guillaume Nault says:
====================
net: Mark the sk parameter of routing functions as 'const'.
The sk_getsecid security hook prevents the use of a const sk pointer in
several routing functions. Since this hook should only read sk data,
make its sk argument const (patch 1), then constify the sk parameter of
various routing functions (patches 2-4).
Build-tested with make allmodconfig.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make it explicit that this function doesn't modify the socket passed as
parameter.
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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icmpv6_flow_init(), ip6_datagram_flow_key_init() and ip6_mc_hdr() don't
need to modify their sk argument. Make that explicit using const.
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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These functions don't need to modify the socket, so let's allow the
callers to pass a const struct sock *.
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The sk_getsecid hook shouldn't need to modify its socket argument.
Make it const so that callers of security_sk_classify_flow() can use a
const struct sock *.
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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