John W. Linville says:
====================
Please pull this batch of updates intended for the 3.17 stream...
This is primarily a Bluetooth pull. Gustavo says:
"A lot of patches to 3.17. The bulk of changes here are for LE support.
The 6loWPAN over Bluetooth now has it own module, we also have support for
background auto-connection and passive scanning, Bluetooth device address
provisioning, support for reading Bluetooth clock values and LE connection
parameters plus many many fixes."
The balance is just a pull of the wireless.git tree, to avoid some
pending merge problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Support the IPv6 hw checksum for RTL8111C and later chips. Note
that the hw has the limitation for the transport offset. The
checksum must be calculated by sw, when the transport offset is
out of the range which the hw accepts.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace large send with giant send for TSO for RTL8111C and later ICs.
The large send setting of the RTL8111DP is different from the other
chips. However, the giant send setting is the same for all the chips
which support it. Use the giant send to synchronize the settings.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
According to the txd_version, split rtl8169_tso_csum() into
rtl8169_tso_csum_v1() and rtl8169_tso_csum_v2().
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Event timestamp values should be adjusted by 3*reference clock period +
11 ns = 35 ns to compensate for input path and synchronization delays.
So subtract 35ns from event timestamps.
Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit adds a new network driver for the network controller in Marvell
Armada 375 SoC.
Given the controller is very different from the ones in the other Marvell
SoCs that use the mv643xx_eth (Kirkwood, Orion, Discovery) and mvneta
(Armada 370/38x/XP) drivers, a new driver is needed.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
[Ezequiel: coding style cleanup]
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fix the debug message format. This patch changes to the
commit f160a2d0b5: net: cpmac: dynamic debug fixes
When we use pr_debug()/netdev_dbg() new lines are inserting in b/w
the values. The format when i use the printk()
These formats used in skb dump and reg dump. This functions
called from the entire code. So this will be enabled all the lines.
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dumping a bridge fdb dumps every fdb entry
held. With this change we are going to filter
on selected bridge port.
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The maximum jumbo frame size for RTL8153 is 9K bytes.
Change the max rx packet size to 9K.
Change the use of the shared fifo from 6K (default) to 12K for tx.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
before registering the the net device this code freeing net device
by using the label 'fail'
fixed by introducing an another label 'out'
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch insert proper spaces before return statement.
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch changes to style of declarattion which follows every driver
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch does the following changes
1. convert printk(KERN_DEBUG.. to netdev_dbg() if we have net_device object
or convert to dev_dbg() if we have device object.
2. convert printk(KERN_WARNING.. to netdev_warn() if we have net_device object
or convert to dev_warn() if we have device object
3. convert printk() to pr_*
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch convert the normal comments to networking subsystem
style comments.
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fix the space after '#' in macro defination
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
checkpatch.pl flagged two uses of kzalloc() for allocating and zeroing
arrays, use kcalloc() instead as recommended.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
checkpatch.pl flagged a bunch of: "CHECK: Alignment should match open
parenthesis" problems, fix all of them.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In order to have at least a netconsole to debug kernel issues on
Windows Azure this patch implements netpoll support.
Sending packets is easy, netvsc_start_xmit() does already everything
needed.
Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The pointer to the struct net_device in the private data is only
assigned but never used, so delete it.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of using a private copy of struct net_device_stats in struct
arc_emac_priv, use stats from struct net_device.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
phy_suspend and phy_resume are two commonly used helper functions that
need to be exported for Ethernet drivers to be built as modules
Fixes: 40755a0fce ("net: systemport: add suspend and resume support")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Both transmit and receive use the same infrastructure for calculating
the packet timestamp. Rather than duplicating the code, provide a
function to do this common work. Model this function in the Intel
e1000e version which avoids calling ns_to_ktime() within the spinlock;
the spinlock is critical for timecounter_cyc2time() but not
ns_to_ktime().
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove a useless status check in the transmit reap path - we have
already checked that the BD_ENET_TX_READY bit is clear, and as the
hardware only ever clears this bit, there is no way this test can ever
be true.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
When we timeout on transmit, it would be useful to dump the transmit
ring, so we can see the ring state. This can be helpful to diagnose
the cause of transmit timeouts.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This allows us to merge two separate preprocessor conditionals together.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Clear any pending receive interrupt before we process a pending packet.
This helps to avoid any spurious interrupts being raised after we have
fully cleaned the receive ring, while still allowing an interrupt to be
raised if we receive another packet.
The position of this is critical: we must do this prior to reading the
next packet status to avoid potentially dropping an interrupt when a
packet is still pending.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
As of "better implementation of iMX6 ERR006358 quirk", we no longer have
a requirement for a delayed work. Moreover, the work is now only used
for timeout purposes, so the timeout flag is also pointless - we set it
each time we queue the work, and the work clears it.
Replace the fec_enet_delayed_work struct with a standard work_struct,
resulting in simplified timeout handling code.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Using a (delayed) workqueue for ERR006358 is not correct - a work queue
is a single-trigger device. Once the work queue has been scheduled, it
can't be re-scheduled until it has been run. This can cause problems -
with an appropriate packet timing, we can end up with packets queued,
but not sent by the hardware, resulting in the transmit timeout firing.
Re-implement this as per the workaround detailed in the ERR006358
documentation - if there are packets waiting to be sent when we service
the transmit ring, and we see that the transmitter is not running,
kick the transmitter to run the pending entries in the ring.
Testing here with a 10Mbit half duplex link sees the resulting iperf
TCP bandwidth increase from between 1 to 2Mbps to between 8 to 9Mbps.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds debugfs capabilities to netback. There used to be a similar
patch floating around for classic kernel, but it used procfs. It is based on a
very similar blkback patch.
It creates xen-netback/[vifname]/io_ring_q[queueno] files, reading them output
various ring variables etc. Writing "kick" into it imitates an interrupt
happened, it can be useful to check whether the ring is just stalled due to a
missed interrupt.
Signed-off-by: Zoltan Kiss <zoltan.kiss@citrix.com>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: xen-devel@lists.xenproject.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Many places call fec_restart() with the second parameter being some kind
of previously saved duplex value, but only two places call it with some
other setting. This is at odds with how the other link settings are
handled, and used to be racy before the rtnl locks were added to
fec_restart()'s various call paths.
Clean this up so all link capabilities are handled in the same way -
saved into the fec_enet_private structure, and then fec_restart() acts
on those settings.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
When the link goes down, the adjust_link method will be called, but
there is no synchronisation to ensure that we won't be processing some
last remaining packets via the NAPI handlers while performing a reset of
the device.
Add the necessary synchronisation to ensure that packet processing
is complete before we stop and reset the FEC.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Changing the features (receive checksumming) requires the hardware to be
reprogrammed, and also changes the checks in the receive packet
processing.
The current implementation has a race - fec_set_features() changes the
flags which alter the receive packet processing while the adapter is
active, and potentially receiving frames. Only after we've modified
the software flag do we shutdown and reconfigure the hardware.
This can lead to packets being received and marked with a valid checksum
(via CHECKSUM_UNNECESSARY) when the hardware checksum validation has not
yet been enabled.
We must quiesce the device, then change the software configuration for
this feature, and then resume the device if it was previously running.
The resulting code structure also allows us to add other configuration
features in this path without having to quiesce and resume the network
interface and device.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
fec_set_features() calls fec_stop() to stop the transmit ring while the
transmit queue is still active. This can lead to the transmit ring
being restarted by an intervening packet queued for transmission, or
by the tx quirk timer expiring.
Fix this by disabling NAPI (which ensures that the NAPI handlers are
not running), and then take the transmit lock while we stop and
restart the adapter (which prevents new packets being queued).
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
fec_suspend() calls fec_stop() to stop the transmit ring while the
transmit packet processing is still active. This can lead to the
transmit queue being restarted by an intervening packet queued for
transmission, or by the tx quirk timer expiring.
Fix this by disabling NAPI first, which will ensure that the NAPI
handlers are not running. Then, take the transmit lock before
detaching the netif device. This ensures that there are no races
with the transmit path - and also ensures that the watchdog won't
fire.
We can then safely stop the ethernet device itself, knowing that the
rest of the driver is safely shut down.
On resume, we bring the device back up in reverse order - we restart
the device, reattach the device (under the tx lock), and then enable
the NAPI handlers.
We also need to adjust the close function to cope with this new
sequence, so that it's possible to cleanly close down the driver
after the hardware fails to resume (eg, due to the regulator_enable()
or pinctrl calls in the resume path returning an error.)
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is the second stage to "move calls to quiesce/resume packet
processing out of fec_restart()", where we remove calls which are not
appropriate to the call site.
In the majority of cases, there is no need to detach and reattach the
interface as we are holding the queue xmit lock across the reset. The
exception to that is in fec_resume(), where we are already detached by
the suspend function. Here, we can remove the call to detach the
interface.
We also do not need to stop the transmit queue. Holding the xmit lock
is enough to ensure that the transmit packet processing is not running
while we perform our task. However, since fec_restart() always cleans
the rings, we call netif_wake_queue() (or netif_device_attach() in the
case of resume) just before dropping the xmit lock. This prevents the
watchdog firing.
Lastly, always call napi_enable() after the device has been reattached
in the resume path so that we know that the transmit packet processing
is already in an enabled state, so we don't call netif_wake_queue()
while detached.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move the calls to quiesce and resume packet processing out of
fec_restart() to its call sites. This is the first step in a two stage
clean up of this code, where we just move the calls out of fec_restart()
without changing them. Not everywhere needs to issue these calls, and
not everywhere needs all of these calls to be issued.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Avoid calling fec_restart() or fec_stop() while the device is down
or not present (iow suspended.)
Although the ndo_timeout method will only be called if the device is
present and running, we defer this to a work queue. The work queue
can run independently, and so needs to repeat these checks to ensure
that a restart doesn't occur after the device has been taken down or
detached for suspend. In this case, we call fec_restart() in the
resume path, so nothing is lost.
For fec_set_features, we add a call to fec_restart() in fec_enet_open()
to ensure that the hardware is appropriate programmed when the interface
is opened. fec_set_features() call should not occur while we're
suspended, so we don't have to worry about that case.
The adjust_link needs similar treatment - this also is called from a
work queue, which may be run independently after we have taken the
device down and detached it. In this case, we just mark the link
down and take no further action. We will reset things appropriately
once the device is up and running again, at which point we will receive
another adjust_link callback.
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
When the FEC is suspended, the device is detached. Upon resume failure,
the device is left in detached mode, possibly with some of the required
clocks not running. We don't want to be poking the device in that state
because as it may cause bus errors.
If the device is marked detached, avoid calling fec_stop().
This depends upon: "net:fec: improve safety of suspend/resume paths"
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
