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When a module is inserted, we attempt to read read the ID from address
0x50. Once we are able to read the ID, we immediately attempt to
initialise the hwmon support by reading from address 0x51. If this
fails, then we fall into error state, and assume that the module is
not usable.
Modules such as the ALCATELLUCENT 3FE46541AA use a real EEPROM for
I2C address 0x50, which responds immediately. However, address 0x51
is an emulated, which only becomes available once the on-board firmware
has booted. This prompts us to fall into the error state.
Since the module may be usable without diagnostics, arrange for the
hwmon probe independent of the rest of the SFP itself, retrying every
5s for up to about 60s for the monitoring to become available, and
print an error message if it doesn't become available.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Some GPON modules (e.g. Huawei MA5671A) take a significant amount of
time to start responding on the I2C bus, contary to the SFF
specifications.
Work around this by implementing a two-level timeout strategy, where
we initially quickly retry for the module, and then use a slower retry
after we exceed a maximum number of quick attempts.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move the module insertion reporting out of the probe handling, but
after we have detected that the upstream has attached (since that is
whom we are reporting insertion to.)
Only report module removal if we had previously reported a module
insertion.
This gives cleaner semantics, and means we can probe the module before
we have an upstream attached.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Switch the power mode switching from the probe, so that we don't
repeatedly re-probe the SFP device if there is a problem accessing
the registers at I2C address 0x51.
In splitting this out, we can also fix a bug where we leave the module
in high-power mode when the upstream device is detached but the module
is still inserted.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Track the upstream's attachment state in the state machine rather than
maintaining a boolean, which ensures that we have a strict order of
ATTACH followed by an UP event - we can never believe that a newly
attached upstream will be anything but down.
Rearrange the order of state machines so we run the module state
machine after the upstream device's state machine, so the module state
machine can check the current state of the device and take action to
e.g. reset back to empty state when the upstream is detached.
This is to allow the module detection to run independently of the
network device becoming available.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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TX_FAULT should be deasserted to indicate that the module has completed
its initialisation. This may include the on-board PHY, so wait until
the module has deasserted TX_FAULT before probing the PHY.
This means that we need an extra state to handle a TX_FAULT that
remains set for longer than t_init, since using the existing handling
state would bypass the PHY probe.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the next state to sfp_sm_fault() so that it can branch to other
states. This will be necessary to improve the initialisation path.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Rather than using mdelay() to wait before probing the PHY (which holds
several locks, including the rtnl lock), add an extra wait state to
the state machine to introduce the 50ms delay without holding any
locks.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move the PHY probe into a separate function, splitting it from
sfp_sm_mod_init(). This will allow us to eliminate the 50ms mdelay()
inside the state machine.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We initialise TX_DISABLE when the sfp cage is probed, and then
maintain its state in the main state machine. However, the module
state machine:
- negates it when detecting a newly inserted module when it's already
guaranteed to be negated.
- negates it when the module is removed, but the main state machine
will do this anyway.
Make TX_DISABLE entirely controlled by the main state machine.
The main state machine also probes the module for a PHY, and removes
the PHY when the the module is removed. Hence, removing the PHY in
sfp_sm_module_remove() is also redundant, and is a left-over from
when we tried to probe for the PHY from the module state machine.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If the module indicates that it requires an address change sequence to
switch between address 0x50 and 0x51, which we don't support, we can't
write to the register that controls the power mode to switch to high
power mode. Warn the user that the module may not be functional in
this case, and don't try to change the power mode.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Parse the SFP power requirement earlier, in preparation for moving the
power level setup code.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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SFF-8472 rev 12.2 defines the time for the serial bus to become ready
using t_serial. Use this as our identifier for this timeout to make
it clear what we are referring to.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Removing a module resets the module state machine back to its initial
state. Rather than explicitly handling this in every state, handle it
early on outside of the state machine.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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sfp_sm_ins_next() modifies the module state machine. Change it's name
to reflect this.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move the tx disable assertion on device down to the main state
machine.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move the SFP sub-state machines out of the main state machine function,
in preparation for it doing a bit more with the device state. By doing
so, we ensure that our debug after the main state machine is always
printed.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The kbuild test robot found a problem with htmldocs with the recent
change to the SFP interfaces. Fix the kernel documentation for
sfp_bus_put() which was missing an '@' before the argument name
description.
Fixes: 727b3668b730 ("net: sfp: rework upstream interface")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, if network is re-started, we advertise all supported EEE
modes, thus potentially overriding a manual adjustment the user made
e.g. via ethtool. Be friendly to the user and preserve a manual
setting on network re-start.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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VSC7514 is a 10-port switch with 2 extra "CPU ports" (targets in the
queuing subsystem for terminating traffic locally).
There are 2 issues with hardcoding the CPU port as #10:
- It is not clear which snippets of the code are configuring something
for one of the CPU ports, and which snippets are just doing something
related to the number of physical ports.
- Actually any physical port can act as a CPU port connected to an
external CPU (in addition to the local CPU). This is called NPI mode
(Node Processor Interface) and is the way that the 6-port VSC9959
(Felix) switch is integrated inside NXP LS1028A (the "local management
CPU" functionality is not used there).
This patch makes it clear that the ocelot_bridge_stp_state_set function
operates on the CPU port (by making it an implicit member of the
bridging domain), and at the same time adds logic for the NPI port (aka
a physical port) to play the role of a CPU port (it shouldn't be part of
bridge_fwd_mask, as it's not explicitly enslaved to a bridge).
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that the places that configure routing destinations for the CPU port
have been marked as such, allow callers to specify their own CPU port
that is different than ocelot->num_phys_ports. A user will be the Felix
DSA driver, where the CPU port is one of the physical ports (NPI mode).
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This will be called from the Felix DSA frontend, which will work in
PHYLIB compatibility mode initially.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is just common path code that belongs to ocelot_init,
it has nothing to do with a specific SoC/board instance.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Allow these functions to be called from the .port_enable and
.port_disable callbacks of DSA.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We need a function for the DSA front-end that does none of the
net_device registration, but initializes the hardware ports.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The VSC7514 switch (Ocelot) is a 10-port device, while VSC9959 (Felix)
is 6-port. Therefore the VLAN filtering mask would be out of bounds when
calling for this new switch. Fix that.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert them into an implementation that can be called from DSA as well.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ocelot and ocelot_port structures will be used by a new DSA driver,
so the ocelot_board.c file will have to allocate and work with a private
structure (ocelot_port_private), which embeds the generic struct
ocelot_port. This is because in DSA, at least one interface does not
have a net_device, and the DSA driver API does not interact with that
anyway.
The ocelot_port structure is equivalent to dsa_port, and ocelot to
dsa_switch. The members of ocelot_port which have an equivalent in
dsa_port (such as dp->vlan_filtering) have been moved to
ocelot_port_private.
We want to enforce the coding convention that "ocelot_port" refers to
the structure, and "port" refers to the integer index. One can retrieve
the structure at any time from ocelot->ports[port].
The patch is large but only contains variable renaming and mechanical
movement of fields from one structure to another.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ocelot_port structure has a net_device embedded in it, which makes
it unsuitable for leaving it in the driver implementation functions.
Leave ocelot_flower.c untouched. In that file, ocelot_port is used as an
interface to the tc shared blocks. That will be addressed in the next
patch.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is needed so that the Felix DSA front-end can call the Ocelot
implementations.
The implementation of the "mc_disabled" switchdev attribute has also
been simplified by using the read-modify-write macro instead of
open-coding that operation.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is needed in order to present a simpler prototype to the DSA
front-end of ocelot.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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To be able to implement a DSA front-end over ocelot_fdb_add,
ocelot_fdb_del, ocelot_fdb_dump, these need to have a simple function
prototype that is independent of struct net_device, netlink skb, etc.
So rename the ndo ops of the ocelot driver into
ocelot_port_fdb_{add,del,dump}, and have them all call the abstract
implementations. At the same time, refactor ocelot_port_fdb_do_dump into
a function whose prototype is compatible with dsa_fdb_dump_cb_t, so that
the do_dump implementations can live together and be called by the
ocelot_fdb_dump through a function pointer.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We need an implementation of these functions that is agnostic to the
higher layer (switchdev or dsa).
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch transforms the ocelot_vlan_port_apply function ("apply
what?") into 3 standalone functions:
- ocelot_port_vlan_filtering
- ocelot_port_set_native_vlan
- ocelot_port_set_pvid
These functions have a prototype that is better aligned to the DSA API.
The function also had some static initialization (TPID, drop frames with
multicast source MAC) which was not being changed from any place, so
that was just moved to ocelot_probe_port (one of the 6 callers of
ocelot_vlan_port_apply).
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for configuring port mirroring through the cls_matchall
classifier. We do a full ingress and/or egress capture towards a
capture port. It allows setting a different capture port for ingress
and egress traffic.
It keeps track of the mirrored ports and the destination ports to
prevent changes to the capture port while other ports are being
mirrored.
Signed-off-by: Iwan R Timmer <irtimmer@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Separate the configuration of the egress and ingress monitor port.
This allows the port mirror functionality to do ingress and egress
port mirroring to separate ports.
Signed-off-by: Iwan R Timmer <irtimmer@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The LAN743x Ethernet controller provides two independent PTP event
channels. Each one can be used to generate a periodic output from
the PTP clock. The output can be routed to any one of the available
GPIO pins on the device.
The PTP clock API can now be used to:
- select any LAN743x GPIO pin to function as a periodic output
- select either LAN743x PTP event channel to generate the output
The LAN7430 has 4 GPIO pins that are multiplexed with its internal
PHY LED control signals. A pin assigned to the LED control function
will be assigned to the GPIO function if selected for PTP periodic
output.
Signed-off-by: John Efstathiades <john.efstathiades@pebblebay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The purpose here is to avoid ptp4l fail due to this condition:
timed out while polling for tx timestamp
increasing tx_timestamp_timeout may correct this issue, but it is likely caused by a driver bug
port 1: send peer delay request failed
So either reset the switch before the management frame was sent, or
after it was timestamped as well, but not in the middle.
The condition may arise either due to a true timeout (i.e. because
re-uploading the static config takes time), or due to the TX timestamp
actually getting lost due to reset. For the former we can increase
tx_timestamp_timeout in userspace, for the latter we need this patch.
Locking all traffic during switch reset does not make sense at all,
though. Forcing all CPU-originated traffic to potentially block waiting
for a sleepable context to send > 800 bytes over SPI is not a good idea.
Flows that are autonomously forwarded by the switch will get dropped
anyway during switch reset no matter what. So just let all other
CPU-originated traffic be dropped as well.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The PTP time of the switch is not preserved when uploading a new static
configuration. Work around this hardware oddity by reading its PTP time
before a static config upload, and restoring it afterwards.
Static config changes are expected to occur at runtime even in scenarios
directly related to PTP, i.e. the Time-Aware Scheduler of the switch is
programmed in this way.
Perhaps the larger implication of this patch is that the PTP .gettimex64
and .settime functions need to be exposed to sja1105_main.c, where the
PTP lock needs to be held during this entire process. So their core
implementation needs to move to some common functions which get exposed
in sja1105_ptp.h.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Through the PTP_SYS_OFFSET_EXTENDED ioctl, it is possible for userspace
applications (i.e. phc2sys) to compensate for the delays incurred while
reading the PHC's time.
The task itself of taking the software timestamp is delegated to the SPI
subsystem, through the newly introduced API in struct spi_transfer. The
goal is to cross-timestamp I/O operations on the switch's PTP clock with
values in the local system clock (CLOCK_REALTIME). For that we need to
understand a bit of the hardware internals.
The 'read PTP time' message is a 12 byte structure, first 4 bytes of
which represent the SPI header, and the last 8 bytes represent the
64-bit PTP time. The switch itself starts processing the command
immediately after receiving the last bit of the address, i.e. at the
middle of byte 3 (last byte of header). The PTP time is shadowed to a
buffer register in the switch, and retrieved atomically during the
subsequent SPI frames.
A similar thing goes on for the 'write PTP time' message, although in
that case the switch waits until the 64-bit PTP time becomes fully
available before taking any action. So the byte that needs to be
software-timestamped is byte 11 (last) of the transfer.
The patch creates a common (and local) sja1105_xfer implementation for
the SPI I/O, and offers 3 front-ends:
- sja1105_xfer_u32 and sja1105_xfer_u64: these are capable of optionally
requesting a PTP timestamp
- sja1105_xfer_buf: this is for large transfers (e.g. the static config
buffer) and other misc data, and there is no point in giving
timestamping capabilities to this.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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rtl8168c_4_hw_phy_config() duplicates rtl8168c_3_hw_phy_config(),
so we can remove the function.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Certain integrated PHY's from RTL8168d support extended pages. On page
0x0007 the number of the extended page is written to register 0x1e,
then the registers on the extended page can be accessed. Add a helper
for this to improve readability and simplify the code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use the phylib MDIO access functions in more places to simplify
the code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Integrated PHY's from RTL8168d support an indirect access method for
PHY parameters. On page 0x0005 parameter number is written to register
0x05, then the parameter can be accessed via register 0x06.
Add a helper for this to improve readability and simplify the code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Integrated PHY's from RTL8168g support an indirect access method for
PHY parameters. On page 0x0a43 parameter number is written to register
0x13, then the parameter can be accessed via register 0x14.
Add a helper for this to improve readability and simplify the code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current upstream interface is an all-or-nothing, which is
sub-optimal for future changes, as it doesn't allow the upstream driver
to prepare for the SFP module becoming available, as it is at boot.
Switch to a find-sfp-bus, add-upstream, del-upstream, put-sfp-bus
interface structure instead, which allows the upstream driver to
prepare for a module being available as soon as add-upstream is called.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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One conflict in the BPF samples Makefile, some fixes in 'net' whilst
we were converting over to Makefile.target rules in 'net-next'.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull networking fixes from David Miller:
1) BPF sample build fixes from Björn Töpel
2) Fix powerpc bpf tail call implementation, from Eric Dumazet.
3) DCCP leaks jiffies on the wire, fix also from Eric Dumazet.
4) Fix crash in ebtables when using dnat target, from Florian Westphal.
5) Fix port disable handling whne removing bcm_sf2 driver, from Florian
Fainelli.
6) Fix kTLS sk_msg trim on fallback to copy mode, from Jakub Kicinski.
7) Various KCSAN fixes all over the networking, from Eric Dumazet.
8) Memory leaks in mlx5 driver, from Alex Vesker.
9) SMC interface refcounting fix, from Ursula Braun.
10) TSO descriptor handling fixes in stmmac driver, from Jose Abreu.
11) Add a TX lock to synchonize the kTLS TX path properly with crypto
operations. From Jakub Kicinski.
12) Sock refcount during shutdown fix in vsock/virtio code, from Stefano
Garzarella.
13) Infinite loop in Intel ice driver, from Colin Ian King.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (108 commits)
ixgbe: need_wakeup flag might not be set for Tx
i40e: need_wakeup flag might not be set for Tx
igb/igc: use ktime accessors for skb->tstamp
i40e: Fix for ethtool -m issue on X722 NIC
iavf: initialize ITRN registers with correct values
ice: fix potential infinite loop because loop counter being too small
qede: fix NULL pointer deref in __qede_remove()
net: fix data-race in neigh_event_send()
vsock/virtio: fix sock refcnt holding during the shutdown
net: ethernet: octeon_mgmt: Account for second possible VLAN header
mac80211: fix station inactive_time shortly after boot
net/fq_impl: Switch to kvmalloc() for memory allocation
mac80211: fix ieee80211_txq_setup_flows() failure path
ipv4: Fix table id reference in fib_sync_down_addr
ipv6: fixes rt6_probe() and fib6_nh->last_probe init
net: hns: Fix the stray netpoll locks causing deadlock in NAPI path
net: usb: qmi_wwan: add support for DW5821e with eSIM support
CDC-NCM: handle incomplete transfer of MTU
nfc: netlink: fix double device reference drop
NFC: st21nfca: fix double free
...
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Pull block fixes from Jens Axboe:
- Two NVMe device removal crash fixes, and a compat fixup for for an
ioctl that was introduced in this release (Anton, Charles, Max - via
Keith)
- Missing error path mutex unlock for drbd (Dan)
- cgroup writeback fixup on dead memcg (Tejun)
- blkcg online stats print fix (Tejun)
* tag 'for-linus-2019-11-08' of git://git.kernel.dk/linux-block:
cgroup,writeback: don't switch wbs immediately on dead wbs if the memcg is dead
block: drbd: remove a stray unlock in __drbd_send_protocol()
blkcg: make blkcg_print_stat() print stats only for online blkgs
nvme: change nvme_passthru_cmd64 to explicitly mark rsvd
nvme-multipath: fix crash in nvme_mpath_clear_ctrl_paths
nvme-rdma: fix a segmentation fault during module unload
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Jeff Kirsher says:
====================
Intel Wired LAN Driver Fixes 2019-11-08
This series contains fixes to igb, igc, ixgbe, i40e, iavf and ice
drivers.
Colin Ian King fixes a potentially wrap-around counter in a for-loop.
Nick fixes the default ITR values for the iavf driver to 50 usecs
interval.
Arkadiusz fixes 'ethtool -m' for X722 devices where the correct value
cannot be obtained from the firmware, so add X722 to the check to ensure
the wrong value is not returned.
Jake fixes igb and igc drivers in their implementation of launch time
support by declaring skb->tstamp value as ktime_t instead of s64.
Magnus fixes ixgbe and i40e where the need_wakeup flag for transmit may
not be set for AF_XDP sockets that are only used to send packets.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Russell King
Heiner Kallweit
Vladimir Oltean
Claudiu Manoil
Iwan R Timmer
John Efstathiades
Vladimir Oltean
David S. Miller
Linus Torvalds