Signed-off-by: NAnish Bhatt <anish@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

cxgb4 : Integrate DCBx support into cxgb4 module. Register dbcnl_ops to give access to DCBx functions
Signed-off-by: NAnish Bhatt <anish@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NAnish Bhatt <anish@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

cxgb4 : Update fw interface file for DCBx support. Adds all the required fields to fw interface to communicate DCBx info
Signed-off-by: NAnish Bhatt <anish@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The time comparsion functions require arguments of type unsigned long
instead of (signed) long.
Signed-off-by: NManuel Schölling <manuel.schoelling@gmx.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Bump versions.

Change-ID: Ifaed5404b9e953a11f4c88953ffe4bc8937705f1
Signed-off-by: NCatherine Sullivan <catherine.sullivan@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Some AQ debug prints needs be moved around or do additional checks so they
will not cause our tool applications to cause segmentation faults.
The tools run in user space and we need to correctly reference kernel
space memory.

Change-ID: Ia2ac4076f576b805f350453fd50ad69c2a91ab9a
Signed-off-by: NKamil Krawczyk <kamil.krawczyk@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch changes the RSS configuration to set table size
and write to hardware to confirm RSS table size being used.

Change-ID: I455a4c09c9dd479f5791ee1f09fdc83ff9908df5
Signed-off-by: NCarolyn Wyborny <carolyn.wyborny@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Fix checkpatch warning:
WARNING: kfree(NULL) is safe this check is probably not required

Cc: Ariel Elior <ariele@broadcom.com>
Cc: netdev@vger.kernel.org
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The loop in i40evf_get_rxfh_indir was only reading fifteen registers,
not all sixteen. Change the matching loop in i40evf_set_rxfh_indir at
the same time to make the code more consistent.

Change-ID: I6c182287698e742d1f6ca1a4bcc43cc08df6e1de
Signed-off-by: NMitch Williams <mitch.a.williams@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Make sure the service tasks don't try to meddle with the
device while a reset is in progress.  Odd things can happen
such as funky stats values.

Change-ID: I6929cb9d6d96839c9279362ca7c0e3fe6c8fcc66
Signed-off-by: NShannon Nelson <shannon.nelson@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

The VEB really is part of the whole PF and should be cleared
at the same time.

Change-ID: Ia1d4d1df5cf421f2578a22486650dd256cc4617a
Signed-off-by: NShannon Nelson <shannon.nelson@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

The bug is encountered when all the Tx hang recovery mechanisms have
failed and driver tries to bring down the interface in the interrupt context.
The patch defers this and schedules it for next cycle.

Change-ID: Id9cd1da15b0e5c018dce18da4d0eed5ef1e8a809
Signed-off-by: NNeerav Parikh <neerav.parikh@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Fix the debugfs command "lldp get remote" that dumped the local
LLDPDU instead of peer's LLDPDU.

Change-ID: I0702eacdafd54478c18f20cab3a7fa5dc1b3182d
Signed-off-by: NNeerav Parikh <neerav.parikh@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Introduce helper routines that would wait for the Rx/Tx queue
to reach the enable or disable state as requested.

Change-ID: I518d9d0e2afef3f45107af3b46e9af402ff587c3
Signed-off-by: NNeerav Parikh <neerav.parikh@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

When we resize the number of queues, the driver needs to disassociate any
qvectors that are no longer in use from the original rings, this way we
do not try to access the rings through these qvectors at the time of freeing
the qvectors.

Change-ID: Ie4eb9fc749f8e12348517fe1560f599c58f4a2a4
Signed-off-by: NAnjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Reset head and tail on admin queue initialization where H/T are
not reset by HW.

Change-ID: I6db8a2dd3f05ce66410a92cce016191add04760e
Signed-off-by: NMichal Kosiarz <michal.kosiarz@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

The NVM wasn't filling in the GLQF_HKEY register on
some old NVM versions.  If this is the case, fill
in some values so receive with flow rules works right.

Change-ID: Ic737888ee68f96efb4cf8a1a49d2301615e09ed2
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This updates the register file for new hardware.
The format of the file has changed requiring drivers to
declare I40E_MASK. I40E_MASK is to be used with 32 bit registers.

This patch also updates the drivers to accommodate the register changes.

Change-ID: If9bc8d736391024cbf99054efe50f9acc12ee4f1
Signed-off-by: NAnjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Add software TSO support for FEC.
This feature allows to improve outbound throughput performance.

Tested on imx6dl sabresd board, running iperf tcp tests shows:
- 16.2% improvement comparing with FEC SG patch
- 82% improvement comparing with NO SG & TSO patch

$ ethtool -K eth0 tso on
$ iperf -c 10.192.242.167 -t 3 &
[  3] local 10.192.242.108 port 35388 connected with 10.192.242.167 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 3.0 sec   181 MBytes   506 Mbits/sec

During the testing, CPU loading is 30%.
Since imx6dl FEC Bandwidth is limited to SOC system bus bandwidth, the
performance with SW TSO is a milestone.

CC: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: David Laight <David.Laight@ACULAB.COM>
CC: Li Frank <B20596@freescale.com>
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add Scatter/gather support for FEC.
This feature allows to improve outbound throughput performance.

Tested on imx6dl sabresd board:
Running iperf tests shows a 55.4% improvement.

$ ethtool -K eth0 sg off
$ iperf -c 10.192.242.167 -t 3 &
[  3] local 10.192.242.108 port 52618 connected with 10.192.242.167 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 3.0 sec  99.5 MBytes   278 Mbits/sec

$ ethtool -K eth0 sg on
$ iperf -c 10.192.242.167 -t 3 &
[  3] local 10.192.242.108 port 52617 connected with 10.192.242.167 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 3.0 sec   154 MBytes   432 Mbits/sec

CC: Li Frank <B20596@freescale.com>
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In order to support SG, software TSO, let's increase BD entry number.

CC: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In order to enhance the code readable, let's factorize the
feature list.
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

IP header checksum is calcalated by network layer in default.
To support software TSO, it is better to use HW calculate the
IP header checksum.

FEC hw checksum feature request the checksum field in frame
is zero, otherwise the calculative CRC is not correct.

For segmentated TCP packet, HW calculate the IP header checksum again,
it doesn't bring any impact. For SW TSO, HW calculated checksum bring
better performance.
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Make the code more readable and easy to support other features like
SG, TSO, moving the common transmit function to one api.

And the patch also factorize the getting BD index to it own function.

CC: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

With some specific configuration (VT6105M on Soekris 5510 and depending
on the device at the other end), fragmented packets were not transmitted
when forcing 100 full-duplex with autoneg disable.

This fix now write full-duplex chips register when forcing full or
half-duplex not only when autoneg is enable.
Signed-off-by: NFrançois Cachereul <f.cachereul@alphalink.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

A malicious VF might try to starve the other VFs & PF by creating
contineous doorbell floods. In order to negate this, HW has a threshold of
doorbells per client, which will stop the client doorbells from arriving
if crossed.

The threshold currently configured for VFs is too low - under extreme traffic
scenarios, it's possible for a VF to reach the threshold and thus for its
fastpath to stop working.
Signed-off-by: NAriel Elior <ariel.elior@qlogic.com>
Signed-off-by: NYuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If L2FW utilized by the UNDI driver has the same version number as that
of the regular FW, a driver loading after UNDI and receiving an uncommon
answer from management will mistakenly assume the loaded FW matches its
own requirement and try to exist the flow via FLR.
Signed-off-by: NYuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: NAriel Elior <ariel.elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Set the phy access mode even in case of link-flap avoidance.
Signed-off-by: NYaniv Rosner <yaniv.rosner@qlogic.com>
Signed-off-by: NYuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: NAriel Elior <ariel.elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This avoids clearing the RX polarity setting in KR mode when polarity lane
is swapped, as otherwise this will result in failed link.
Signed-off-by: NYaniv Rosner <yaniv.rosner@qlogic.com>
Signed-off-by: NYuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: NAriel Elior <ariel.elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NShruti Kanetkar <Shruti@Freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Print the device address, the register number and the PHY ID for
which the MDIO read operation failed
Signed-off-by: NShruti Kanetkar <Shruti@Freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NShahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

- Check interrupt mode at the start of qlcnic_set_channels().
- Do not validate ring count if they are not going to change.
Signed-off-by: NShahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Pre-allocate the physically contiguous DMA buffer used for
minidump collection at driver load time, rather than at
run time, to minimize allocation failures. Driver will allocate
the buffer at load time if PEX DMA support capability is indicated
by the adapter.
Signed-off-by: NShahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We recently change the kzalloc() to devm_kzalloc() so freeing "ctlr"
here could lead to a double free.

Fixes: e1943128 ('drivers: net: davinci_cpdma: Convert kzalloc() to devm_kzalloc().')
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There is a typo here so we return directly instead of unwinding.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fixes:ee45fd92
("sfc: Use TX PIO for sufficiently small packets")

The linux net driver uses memcpy_toio() in order to copy into
the PIO buffers.
Even on a 64bit machine this causes 32bit accesses to a write-
combined memory region.
There are hardware limitations that mean that only 64bit
naturally aligned accesses are safe in all cases.
Due to being write-combined memory region two 32bit accesses
may be coalesced to form a 64bit non 64bit aligned access.
Solution was to open-code the memory copy routines using pointers
and to only enable PIO for x86_64 machines.

Not tested on platforms other than x86_64 because this patch
disables the PIO feature on other platforms.
Compile-tested on x86 to ensure that works.

The WARN_ON_ONCE() code in the previous version of this patch
has been moved into the internal sfc debug driver as the
assertion was unnecessary in the upstream kernel code.

This bug fix applies to v3.13 and v3.14 stable branches.
Signed-off-by: NShradha Shah <sshah@solarflare.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch fixes an issue that we cannot use nfs rootfs correctly
on r8a7790 when the command below runs on a host PC.

 $ sudo ping -f -l 8 $BOARD_IP_ADDR

Since the driver sets the RACT to 1 in the first while loop of
sh_eth_rx(), the controller accepts a next frame into the next RX
descriptor during the while loop. But, in the first while loop
doesn't allocate a next skb. So, this patch removes the RACT setting
in the first while loop of sh_eth_rx().
Signed-off-by: NYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch fixes the packet "exceeded" condition in sh_eth_rx() when
RACT in an RX descriptor is not set and the "quota" is 0.
Otherwise, kernel panic happens because the "&n->poll_list" is deleted
twice in sh_eth_poll() which calls napi_complete() and net_rx_action().
Signed-off-by: NKouei Abe <kouei.abe.cp@renesas.com>
Signed-off-by: NYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>