reproduce:
  wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
  chmod +x ~/bin/make.cross
  git checkout 4d494cdc
  make.cross ARCH=m68k  m5272c3_defconfig
  make.cross ARCH=m68k

drivers/net/ethernet/freescale/fec.h:262:0: warning: "FEC_R_DES_START" redefined
 #define FEC_R_DES_START(X) ((X == 1) ? FEC_R_DES_START_1 : \
 ^
drivers/net/ethernet/freescale/fec.h:158:0: note: this is the location of the previous definition
 #define FEC_R_DES_START  0x3d0 /* Receive descriptor ring */
 ^
drivers/net/ethernet/freescale/fec.h:265:0: warning: "FEC_X_DES_START" redefined
 #define FEC_X_DES_START(X) ((X == 1) ? FEC_X_DES_START_1 : \

...
Signed-off-by: NFrank Li <Frank.Li@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net: ethernet: neterion: vxge: vxge-main.c: Cleaning up missing null-terminate in conjunction with strncpy

Replacing strncpy with strlcpy to avoid strings that lacks null terminate.
Signed-off-by: NRickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net: ethernet: freescale: fec_main.c: Cleaning up missing null-terminate in conjunction with strncpy

Replacing strncpy with strlcpy to avoid strings that lacks null terminate.
Signed-off-by: NRickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use container_of instead of casting first structure member.

Compiled but untested.
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use container_of instead of casting first structure member.

ARM cross-compiled but untested.
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Print the IP revision when probing.
Signed-off-by: NBo Shen <voice.shen@atmel.com>
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Software clear the MDIO interrupt before MDIO bus access, but
MAC still generate MDIO interrupt. The issue only happen on
imx6slx chip.

CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.0-rc1-00399-g0bcad17 #315
Backtrace:
[<800121fc>] (dump_backtrace) from [<800124e0>] (show_stack+0x18/0x1c)
 r6:8096e534 r5:8096e534 r4:00000000 r3:00000000
[<800124c8>] (show_stack) from [<806a4c60>] (dump_stack+0x8c/0xa4)
[<806a4bd4>] (dump_stack) from [<80060ab8>] (__lock_acquire+0x1814/0x1c40)
 r6:be078000 r5:be074000 r4:be03f6e4 r3:be078000
[<8005f2a4>] (__lock_acquire) from [<800616e0>] (lock_acquire+0x70/0x84)
 r10:809ada33 r9:be010600 r8:00000096 r7:00000001 r6:be074000 r5:00000000
 r4:60000193
[<80061670>] (lock_acquire) from [<806abb20>] (_raw_spin_lock_irqsave+0x40/0x54)
 r7:00000000 r6:8005a3f8 r5:00000193 r4:be03f6d4
[<806abae0>] (_raw_spin_lock_irqsave) from [<8005a3f8>] (complete+0x1c/0x4c)
 r6:80950904 r5:be03f6d0 r4:be03f6d4
[<8005a3dc>] (complete) from [<8041b4c0>] (fec_enet_interrupt+0x128/0x164)
 r6:80950904 r5:00800000 r4:be03f000 r3:00000000
[<8041b398>] (fec_enet_interrupt) from [<8006aeac>] (handle_irq_event_percpu+0x38/0x13c)
 r6:00000000 r5:be01065c r4:be399e00 r3:8041b398
[<8006ae74>] (handle_irq_event_percpu) from [<8006aff4>] (handle_irq_event+0x44/0x64)
 r10:be03f000 r9:80989fe0 r8:00000000 r7:00000096 r6:be399e00 r5:be01065c
 r4:be010600
[<8006afb0>] (handle_irq_event) from [<8006e3e8>] (handle_fasteoi_irq+0xc8/0x1bc)
 r6:8096e764 r5:be01065c r4:be010600 r3:00000000
[<8006e320>] (handle_fasteoi_irq) from [<8006a63c>] (generic_handle_irq+0x30/0x44)
 r6:be074010 r5:80945e4c r4:00000096 r3:8006e320
[<8006a60c>] (generic_handle_irq) from [<8000f218>] (handle_IRQ+0x54/0xbc)
 r4:80950d74 r3:00000180
[<8000f1c4>] (handle_IRQ) from [<800086cc>] (gic_handle_irq+0x30/0x68)
 r8:be3ab478 r7:c080e100 r6:be075bd8 r5:80950eec r4:c080e10c r3:000000a0
[<8000869c>] (gic_handle_irq) from [<80013064>] (__irq_svc+0x44/0x5c)
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NFrank Li <Frank.Li@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

i.MX6 SX change FEC alignment requirement.
i.MX6 SX change internal bus from AHB to AXI.
It require RX buffer must be 64 bytes alignment.
And remove TX buffer alignment requirement.
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NFrank Li <Frank.Li@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add compatible string "fsl,imx6sx-fec" for i.MX6SX.
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NFrank Li <Frank.Li@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

i.MX6SX Enet-AVB support 3 tx queues, 3 rx queues.
For tx queues: ring 0 -> best effort
	       ring 1 -> Class A
	       ring 2 -> Class B
For rx queues:
	       ring 0 -> best effort
	       ring 1 -> receive VLAN packet with classification match
	       ring 2 -> receive VLAN packet with classification match

Add enet-avb IP multiqueue support for the driver.
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NFrank Li <Frank.Li@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

For i.MX6SX enet use AXI bus, reset MAC will make system bus dead
if ENET-AXI bus has pending access (AHB bus should not have such issue).
So, disable enet with AVB MAC instead of reset MAC itself.
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NFrank Li <Frank.Li@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

initilized all queues according to queue number get from DT file.
Signed-off-by: NFrank Li <Frank.Li@freescale.com>
Signed-off-by: NDuan Fugang <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

By default, the tx/rx queue number is 1, user can config the queue number
at DTS file like this:
	fsl,num-tx-queues=<3>;
	fsl,num-rx-queues=<3>

Since i.MX6SX enet-AVB IP support multi queues, so use multi queues
interface to allocate and set up an Ethernet device.
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NFrank Li <Frank.Li@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch just change data structure to support multi-queue.
Only 1 queue enabled.

Ethernet multiqueue mechanism can improve performance in SMP system.
For single hw queue, multiqueue can balance cpu loading.
For multi hw queues, multiple cores can process network packets in parallel,
and refer the article for the detail advantage for multiqueue:
http://vger.kernel.org/~davem/davem_nyc09.pdfSigned-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NFrank Li <frank.li@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add enet AVB feature macro define for imx6sx.
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NFrank Li <Frank.Li@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

i.MX6sx enet has below clocks for user config:
clk_ipg: ipg_clk_s, ipg_clk_mac0_s, 66Mhz
clk_ahb: enet system clock, it is enet AXI clock for imx6sx.
	 For imx6sx, it alos is the clock source of interrupt coalescing.
	 The clock range: 200Mhz ~ 266Mhz.
clk_ref: refrence clock for tx and rx. For imx6sx enet RGMII mode,
	 the refrence clock is 125Mhz coming from internal PLL or external.
	 In i.MX6sx-arm2 board, the clock is from internal PLL.
	 clk_ref is optional, depends on board.
clk_enet_out: The clock can be output from internal PLL. It can supply 50Mhz
	 clock for phy. clk_enet_out is optional, depends on chip and board.
clk_ptp: 1588 ts clock. It is optional, depends on chip.

The patch add clk_ref to distiguish the different clocks.
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NFrank Li <Frank.Li@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently PCIe error reporting is enabled only on PFs. This patch enables
this feature on VFs too as Lancer VFs support it.
Signed-off-by: NKalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The MODIFY_EQ_DELAY FW cmd on Lancer is supported for a max of 8 EQs per cmd.
Signed-off-by: NKalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Report the ethtool port-type/supported/advertising values based on the
cable_type for QSFP and SFP+ interfaces. The cable_type is parsed from
the transceiver data fetched from the FW.
Signed-off-by: NRavikumar Nelavelli <ravikumar.nelavelli@emulex.com>
Signed-off-by: NSuresh Reddy <Suresh.Reddy@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds support for the dump-module-eeprom and module-info
ethtool options.
Signed-off-by: NMark Leonard <mark.leonard@emulex.com>
Signed-off-by: NSuresh Reddy <Suresh.Reddy@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In some configurations the FW doesn't allow changing flow control settings
of a link. Unless a v1 version of the SET_FLOW_CONTROL cmd is used, the FW
doesn't report an error to the driver.
Signed-off-by: NSuresh Reddy <Suresh.Reddy@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In the RX path, the driver currently consumes upto 64 (budget) packets in
one NAPI sweep. When the size of the packet received is larger than a
fragment size (2K), more than one fragment is consumed for each packet.
As the driver currently posts a max of 64 fragments, all the consumed
fragments may not be replenished. This can cause avoidable drops in RX path.
This patch fixes this by posting a max(consumed_frags, 64) frags. This is
done only when there are atleast 64 free slots in the RXQ.
Signed-off-by: NAjit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: NKalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Replace strcpy with strlcpy, as it avoids a possible buffer overflow.
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch fixes the following minor issues with log messages in be2net:
  1) Period is not required at the end of log message.
  2) Remove "Unknown grp5 event" logs to reduce noise. The driver can safely
     ignore async events from FW it's not interested in.
  3) Reword a log message for better readability to say that SRIOV
     "is disabled" rather than "not supported".
Signed-off-by: NVasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In case of error, the function devm_ioremap_resource() returns
ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When sending out a burst of packets across multiple descriptors,
it is sufficient to send one LDC "start" trigger for
the first descriptor, so do not send an LDC "start" for every
pass through vnet_start_xmit. Similarly, it is sufficient to send
one "DRING_STOPPED" trigger for the last dring (and if that
fails, hold off and send the trigger later).

Optimizations to the number of LDC messages helps avoid
filling up the LDC channel with superfluous LDC messages
that risk triggering flow-control on the channel,
and also boosts performance.
Signed-off-by: NSowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: NRaghuram Kothakota <raghuram.kothakota@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

calling ether_setup is redundant since alloc_etherdev calls
it.
Signed-off-by: NSubbaraya Sundeep Bhatta <sbhatta@xilinx.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

It will use pr_info_one() to print the version info of the
driver in probe function only once. No need to use the static
variable here.
Signed-off-by: NVarka Bhadram <varkab@cdac.in>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

napi_gro_frags allows skb re-use in case GRO can merge payload pages
into an skb on the GRO lists.

netperf TCP_STREAM, kvm-e1000 emulation, mtu 9k:
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec
old: 87380  16384  16384    30.00  8985.78
new: 87380  16384  16384    30.00  9907.05
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Instead of preallocating Rx skbs, allocate them right before sending
inbound packet up the stack.

e1000-kvm, mtu1500, netperf TCP_STREAM:
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec
old: 87380  16384  16384    60.00    4532.40
new: 87380  16384  16384    60.00    4599.05
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

and remove *page, its only used for Rx.
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

e1000 uses the same metadata struct for Rx and Tx.  But Tx and Rx have
different requirements.

For Rx, we only need to store a buffer and a DMA address.

Follow-up patch will remove skb for Rx, bringing rx_buffer_info down
to 16 bytes on x86_64.

[ buffer_info is 48 bytes ]
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Currently we unmap the DMA range, then copy to new skb.
Change this so we can keep the mapping in case the data is copied.
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Its the same in both handlers.
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

... and make it static.
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This change addresses several issues in the current ixgbe implementation of
busy poll sockets.

First was the fact that it was possible for frames to be delivered out of
order if they were held in GRO.  This is addressed by flushing the GRO buffers
before releasing the q_vector back to the idle state.

The other issue was the fact that we were having to take a spinlock on
changing the state to and from idle.  To resolve this I have replaced the
state value with an atomic and use atomic_cmpxchg to change the value from
idle, and a simple atomic set to restore it back to idle after we have
acquired it.  This allows us to only use a locked operation on acquiring the
vector without a need for a locked operation to release it.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Tested-by: NPhil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This change removes the Rx buffer allocation at the end of ixgbe_clean_rx_irq.
The reason for removing this is to avoid the extra latency introduced by the
MMIO write.  This can amount to somewhere around an extra 100ns of latency and
one extra message worth of PCIe bus overhead.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Tested-by: NPhil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Resolve missing-field-initializers warnings by using
designated initialization.
Signed-off-by: NMark Rustad <mark.d.rustad@intel.com>
Tested-by: NPhil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch resolves warnings produced by ixgbe in W=2 kernel
builds. There are missing-field-initializers warnings and shadow
warnings. None of these point to any deeper problem, so just
resolve them so any new warnings get analyzed.
Signed-off-by: NMark Rustad <mark.d.rustad@intel.com>
Tested-by: NPhil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Signed-off-by: NHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>