The rtnl lock is taken just the line above, no need to take the rcu also.

Fixes: 1788b856 ("gtp: fix use-after-free in gtp_encap_destroy()")
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If we intend to use PCS operations, mac_pcs_get_state() will not be
implemented, so will be NULL. If we also intend to register the PCS
operations in mac_prepare() or mac_config(), then this leads to an
attempt to call NULL function pointer during phylink_start(). Avoid
this, but we must report the link is down.
Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

add debugfs node for querying function table, for example:
cat /sys/kernel/debug/hinic/0000:15:00.0/func_table/valid
Signed-off-by: NLuo bin <luobin9@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

add debugfs node for querying rq info, for example:
cat /sys/kernel/debug/hinic/0000:15:00.0/RQs/0x0/rq_hw_pi
Signed-off-by: NLuo bin <luobin9@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

add debugfs node for querying sq info, for example:
cat /sys/kernel/debug/hinic/0000:15:00.0/SQs/0x0/sq_pi
Signed-off-by: NLuo bin <luobin9@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Convert tx_timeout handler to not do the full reset.  As this was
the last user of ionic_reset_queues(), we can drop it.
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add to our new ionic_reconfigure_queues() to also be able to change
the number of queues in use, and to change the queue interrupt layout
between split and combined.
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The original way of changing ring length was to completely
tear down the lif's queue structure and then rebuild it, while
running the risk of allocations that might fail in the middle
and leave us with a broken driver.

Instead, we can set up all the new queue and descriptor
allocations first, then swap them out and delete the old
allocations.  If the new allocations fail, we report the error,
stay with the old setup and continue running.  This gives us
a safer path, and a smaller window of time where we're not
processing traffic.
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We really don't need to tear down and rebuild the whole queue structure
when changing the MTU; we can simply stop the queues, clean and refill,
then restart the queues.
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use index counters rather than pointers for tracking head
and tail in the queues to save a little memory and to perhaps
slightly faster queue processing.
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Split out the queue descriptor blocks into separate dma
allocations to make for smaller blocks.
Co-developed-by: NNeel Patel <neel@pensando.io>
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

ionic_open() and ionic_stop() are not referenced outside of their
defining file, so make them static.
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use a block of stats structs attached to the lif instead of
little ones attached to each qcq.  This simplifies our memory
management and gets rid of a lot of unnecessary indirection.
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

As we aren't yet supporting multiple lifs, we can remove
complexity by removing the list concept and related code,
to be re-engineered later when actually needed.
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use kcalloc for allocating arrays of structures.

Following along after
commit e71642009cbdA ("ionic_lif: Use devm_kcalloc() in ionic_qcq_alloc()")
there are a couple more array allocations that can be converted
to using devm_kcalloc().
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix the queue name displayed.
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The NIC might tell us its minimum MTU, but let's be sure not
to use something smaller than ETH_MIN_MTU.
Signed-off-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The DP83822 can be configured to use a Fiber connection.  The strap
register is read to determine if the device has been configured to use
a fiber connection.  With the fiber connection the PHY can be configured
to detect whether the fiber connection is active by either a high signal
or a low signal.

Fiber mode is only applicable to the DP83822 so rework the PHY match
table so that non-fiber PHYs can still use the same driver but not call
or use any of the fiber features.
Signed-off-by: NDan Murphy <dmurphy@ti.com>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Generally, each PHY has their own configuration and it can be done
through an external PHY driver.  The smsc95xx driver uses only the
hard-coded internal PHY configuration.

This patch adds phylib support to probe external PHY drivers for
configuring external PHYs.

The MDI-X configuration for the internal PHYs moves from
drivers/net/usb/smsc95xx.c to drivers/net/phy/smsc.c.
Signed-off-by: NAndre Edich <andre.edich@microchip.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Using `void *driver_priv` instead of `unsigned long data[]` is more
straightforward way to recover the `struct smsc95xx_priv *` from the
`struct net_device *`.
Signed-off-by: NAndre Edich <andre.edich@microchip.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch removes arguments netdev and phy_id from the functions
smsc95xx_mdio_read_nopm and smsc95xx_mdio_write_nopm.  Both removed
arguments are recovered from a new argument `struct usbnet *dev`.
Signed-off-by: NAndre Edich <andre.edich@microchip.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Like all other network functions, let's notify gtp context on creation and
deletion.
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Tested-by: NGabriel Ganne <gabriel.ganne@6wind.com>
Acked-by: NHarald Welte <laforge@gnumonks.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Sort the Kconfig based on the text shown in make menuconfig and sort
the Makefile by CONFIG symbol.
Acked-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Move all the MDIO drivers and multiplexers into drivers/net/mdio.  The
mdio core is however left in the phy directory, due to mutual
dependencies between the MDIO core and the PHY core.

Take this opportunity to sort the Kconfig based on the menuconfig
strings, and move the multiplexers to the end with a separating
comment.

v2:
Fix typo in commit message
Acked-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This header file is currently included into the ethernet driver via a
relative path into the PHY subsystem. This is bad practice, and causes
issues for the upcoming move of the MDIO driver. Move the header file
into include/linux to clean this up.

v2:
Move header to include/linux/mdio
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In preparation for moving all MDIO drivers into drivers/net/mdio, move
the mdio-i2c header file into include/linux/mdio so it can be used by
both the MDIO driver and the SFP code which instantiates I2C MDIO
busses.

v2:
Add include/linux/mdio
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Create drivers/net/pcs and move the Synopsys DesignWare XPCS into the
new directory. Move the header file into a subdirectory
include/linux/pcs

Start a naming convention of all PCS files use the prefix pcs-, and
rename the XPCS files to fit.

v2:
Add include/linux/pcs

v4:
Fix include path in stmmac.
Remove PCS_DEVICES to avoid new prompts

Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We want to reuse the functions and structs for other counters such as BSS
color change. Rename them to more generic names.
Signed-off-by: NJohn Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20200811080107.3615705-2-john@phrozen.orgSigned-off-by: NJohannes Berg <johannes.berg@intel.com>

The only usage of ath11k_thermal_ops is to pass its address to
thermal_cooling_device_register() which takes a const pointer. Make it
const to allow the compiler to put it in read-only memory.
Signed-off-by: NRikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The only usage of vsc8584_macsec_ops is to assign its address to the
macsec_ops field in the phydev struct, which is a const pointer. Make it
const to allow the compiler to put it in read-only memory.
Signed-off-by: NRikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The only usage of vddio_regulator_ops and vddh_regulator_ops is to
assign their address to the ops field in the regulator_desc struct,
which is a const pointer. Make them const to allow the compiler to
put them in read-only memory.
Signed-off-by: NRikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The only usage of bb_ops is to assign its address to the ops field in
the mdiobb_ctrl struct, which is a const pointer. Make it const to allow
the compiler to put it in read-only memory.
Signed-off-by: NRikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The only usage of bb_ops is to assign its address to the ops field in
the mdiobb_ctrl struct, which is a const pointer. Make it const to allow
the compiler to put it in read-only memory.
Signed-off-by: NRikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The only usage of qca_serdev_ops is to pass its address to
serdev_device_set_client_ops() which takes a const pointer. Make it
const to allow the compiler to put it in read-only memory.
Signed-off-by: NRikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove linux/notifier.h which is included more than once
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NWang Hai <wanghai38@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

These two functions share the majority of the code, hence merge
them together. In the meanwhile, add a reset pass-in parameter
to differentiate them. Thus, the code is easier to read and to tell
the difference between reset_init and regular init.
Signed-off-by: NLijun Pan <ljp@linux.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

At the beginning of the function, from_passive_init is set false by
"adapter->from_passive_init = false;",
hence the if statement will never run.
Signed-off-by: NLijun Pan <ljp@linux.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When H_SEND_CRQ command returns with H_CLOSED, it means the
server's CRQ is not ready yet. Instead of resetting immediately,
we wait for the server to launch passive init.
ibmvnic_init() and ibmvnic_reset_init() should also return the
error code from ibmvnic_send_crq_init() call.
Signed-off-by: NLijun Pan <ljp@linux.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Instead of comparing (adapter->init_done_rc == 1), let it
be (adapter->init_done_rc == PARTIALSUCCESS).
Signed-off-by: NLijun Pan <ljp@linux.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

A single cacheline might not contain the packet header for
small L1_CACHE_BYTES values.
Use net_prefetch() as it issues an additional prefetch
in this case.
Signed-off-by: NTariq Toukan <tariqt@mellanox.com>
Reviewed-by: NSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>