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Author SHA1 Message Date
David S. Miller afd64631f8 wireless-drivers fixes for 4.12
Two important fixes for brcmfmac. The rest of the brcmfmac patches are
 either code preparation and fixing a new build warning.
 
 brcmfmac
 
 * fix a NULL pointer dereference during resume
 
 * fix a NULL pointer dereference with USB devices, a regression from
   v4.12-rc1
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Merge tag 'wireless-drivers-for-davem-2017-06-20' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for 4.12

Two important fixes for brcmfmac. The rest of the brcmfmac patches are
either code preparation and fixing a new build warning.

brcmfmac

* fix a NULL pointer dereference during resume

* fix a NULL pointer dereference with USB devices, a regression from
  v4.12-rc1
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-20 15:41:56 -04:00
Niklas Cassel 05cf0d1bf4 net: stmmac: free an skb first when there are no longer any descriptors using it
When having the skb pointer in the first descriptor, stmmac_tx_clean
can get called at a moment where the IP has only cleared the own bit
of the first descriptor, thus freeing the skb, even though there can
be several descriptors whose buffers point into the same skb.

By simply moving the skb pointer from the first descriptor to the last
descriptor, a skb will get freed only when the IP has cleared the
own bit of all the descriptors that are using that skb.

Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-20 15:41:00 -04:00
Edward Cree 57f0c9cf58 sfc: remove duplicate up_write on VF filter_sem
Somehow two copies of the line 'up_write(&vf->efx->filter_sem);' got into
 efx_ef10_sriov_set_vf_vlan().  This would put the mutex in a bad state and
 cause all subsequent down attempts to hang.

Fixes: 671b53eec2 ("sfc: Ensure down_write(&filter_sem) and up_write() are matched before calling efx_net_open()")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-20 15:40:00 -04:00
Madalin Bucur fb52728a92 dpaa_eth: reuse the dma_ops provided by the FMan MAC device
Remove the use of arch_setup_dma_ops() that was not exported
and was breaking loadable module compilation.

Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-20 13:46:53 -04:00
Madalin Bucur 5567e98919 fsl/fman: propagate dma_ops
Make sure dma_ops are set, to be later used by the Ethernet driver.

Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-20 13:46:53 -04:00
Lin Yun Sheng 7fe5b91431 net/hns:bugfix of ethtool -t phy self_test
This patch fixes the phy loopback self_test failed issue. when
Marvell Phy Module is loaded, it will powerdown fiber when doing
phy loopback self test, which cause phy loopback self_test fail.

Signed-off-by: Lin Yun Sheng <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-19 14:20:42 -04:00
Raju Rangoju dec6b33163 cxgb4: notify uP to route ctrlq compl to rdma rspq
During the module initialisation there is a possible race
(basically race between uld and lld) where neither the uld
nor lld notifies the uP about where to route the ctrl queue
completions. LLD skips notifying uP as the rdma queues were
not created by then (will leave it to ULD to notify the uP).
As the ULD comes up, it also skips notifying the uP as the
flag FULL_INIT_DONE is not set yet (ULD assumes that the
interface is not up yet).

Consequently, this race between uld and lld leaves uP
unnotified about where to send the ctrl queue completions
to, leading to iwarp RI_RES WR failure.

Here is the race:

CPU 0                                   CPU1

- allocates nic rx queus
- t4_sge_alloc_ctrl_txq()
(if rdma rsp queues exists,
tell uP to route ctrl queue
compl to rdma rspq)
                                - acquires the mutex_lock
                                - allocates rdma response queues
                                - if FULL_INIT_DONE set,
                                  tell uP to route ctrl queue compl
                                  to rdma rspq
                                - relinquishes mutex_lock
- acquires the mutex_lock
- enable_rx()
- set FULL_INIT_DONE
- relinquishes mutex_lock

This patch fixes the above issue.

Fixes: e7519f9926f1('cxgb4: avoid enabling napi twice to the same queue')
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
CC: Stable <stable@vger.kernel.org> # 4.9+
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-19 10:59:04 -04:00
Arend Van Spriel 35abcd4f9f brcmfmac: fix uninitialized warning in brcmf_usb_probe_phase2()
This fixes the following warning:

  drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c: In function
  'brcmf_usb_probe_phase2':
  drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c:1198:2:
  warning: 'devinfo' may be used uninitialized in this function
  [-Wmaybe-uninitialized]
    mutex_unlock(&devinfo->dev_init_lock);

Fixes: 6d0507a777 ("brcmfmac: add parameter to pass error code in firmware callback")
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-16 11:52:36 +03:00
Or Gerlitz 31ac93386d net/mlx5e: Avoid doing a cleanup call if the profile doesn't have it
The error flow of mlx5e_create_netdev calls the cleanup call
of the given profile without checking if it exists, fix that.

Currently the VF reps don't register that callback and we crash
if getting into error -- can be reproduced by the user doing ctrl^C
while attempting to change the sriov mode from legacy to switchdev.

Fixes: 26e59d8077 '(net/mlx5e: Implement mlx5e interface attach/detach callbacks')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reported-by: Sabrina Dubroca <sdubroca@redhat.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-15 23:27:46 +03:00
Or Gerlitz 9cfb4f7192 net/mlx5e: Remove TC header re-write offloading of ip tos
Currently the firmware API is partial and allows to offload only
the dscp part of the tos, also, ipv6 support isn't there yet.

As such, remove the offloading option of ipv4 dscp till the FW
APIs are more comprehensive.

Fixes: d79b6df6b1 ('net/mlx5e: Add parsing of TC pedit actions to HW format')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-15 23:27:46 +03:00
Or Gerlitz 9d1cef196b net/mlx5: Properly check applicability of devlink eswitch commands
Currently we don't check that the link type is Eth and hence crash
on IB ports when attempting to deref esw->xxx, fix that.

To avoid repeating this check over and over, put the existing
checks and the one on link type in a single helper.

Fixes: 7768d1971d ('net/mlx5: E-Switch, Add control for encapsulation')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reported-by: Mohamad Badarnah <mohamadb@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-15 23:27:46 +03:00
Chris Mi 5f195c2c5c net/mlx5e: Fix min inline value for VF rep SQs
The offending commit only changed the code path for PF/VF, but it
didn't take care of VF representors. As a result, since
params->tx_min_inline_mode for VF representors is kzalloced to 0
(MLX5_INLINE_MODE_NONE), all VF reps SQs were set to that mode.

This actually works on CX5 by default but broke CX4. Fix that by
adding a call to query the min inline mode from the VF rep build up code.

Fixes: a6f402e499 ("net/mlx5e: Tx, no inline copy on ConnectX-5")
Signed-off-by: Chris Mi <chrism@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-15 23:27:46 +03:00
Maor Dickman f0b381178b net/mlx5e: Fix timestamping capabilities reporting
Misuse of (BIT) macro caused to report wrong flags for
"Hardware Transmit Timestamp Modes" and "Hardware Receive
Filter Modes"

Fixes: ef9814deaf ('net/mlx5e: Add HW timestamping (TS) support')
Signed-off-by: Maor Dickman <maord@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-15 23:27:46 +03:00
Eli Cohen 6c780a0267 net/mlx5: Wait for FW readiness before initializing command interface
Before attempting to initialize the command interface we must wait till
the fw_initializing bit is clear.

If we fail to meet this condition the hardware will drop our
configuration, specifically the descriptors page address.  This scenario
can happen when the firmware is still executing an FLR flow and did not
finish yet so the driver needs to wait for that to finish.

Fixes: e3297246c2 ('net/mlx5_core: Wait for FW readiness on startup')
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-15 23:27:46 +03:00
Arend Van Spriel a2b7a622d6 brcmfmac: fix brcmf_fws_add_interface() for USB devices
USB devices rely on queuing functionality provided by the fwsignal
module regardless the mode fwsignal is operating in. For this some
data structure needs to be reserved which is tied to the interface,
which is done by brcmf_fws_add_interface(). However, it checks the
mode. Replace that by checking result from brcmf_fws_queue_skbs().
Otherwise the driver will crash in a null pointer dereference when
data is transmitted on the interface.

Fixes: fc0471e3e8 ("brcmfmac: ignore interfaces when fwsignal is disabled")
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-15 19:10:11 +03:00
Arend Van Spriel 7a51461fc2 brcmfmac: unbind all devices upon failure in firmware callback
When request firmware fails, brcmf_ops_sdio_remove is being called and
brcmf_bus freed. In such circumstancies if you do a suspend/resume cycle
the kernel hangs on resume due a NULL pointer dereference in resume
function. So in brcmf_sdio_firmware_callback() we need to unbind the
driver from both sdio_func devices when firmware load failure is indicated.

Cc: stable@vger.kernel.org # 4.9.x-
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-15 19:06:53 +03:00
Arend Van Spriel 03fb0e8393 brcmfmac: use firmware callback upon failure to load
When firmware loading failed the code used to unbind the device provided
by the calling code. However, for the sdio driver two devices are bound
and both need to be released upon failure. The callback has been extended
with parameter to pass error code so add that in this commit upon firmware
loading failure.

Cc: stable@vger.kernel.org # 4.9.x-
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-15 19:06:11 +03:00
Arend Van Spriel 6d0507a777 brcmfmac: add parameter to pass error code in firmware callback
Extend the parameters in the firmware callback so it can be called
upon success and failure. This allows the caller to properly clear
all resources in the failure path. Right now the error code is
always zero, ie. success.

Cc: stable@vger.kernel.org # 4.9.x-
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-15 19:06:00 +03:00
Jia-Ju Bai 640f93cc6e i40e: Fix a sleep-in-atomic bug
The driver may sleep under a spin lock, and the function call path is:
i40e_ndo_set_vf_port_vlan (acquire the lock by spin_lock_bh)
  i40e_vsi_remove_pvid
    i40e_vlan_stripping_disable
      i40e_aq_update_vsi_params
        i40e_asq_send_command
          mutex_lock --> may sleep

To fixed it, the spin lock is released before "i40e_vsi_remove_pvid", and
the lock is acquired again after this function.

Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-14 23:45:22 -04:00
Tayar, Tomer ace17c3692 qed: fix dump of context data
Currently when dumping a context data only word number '1' is read for the
entire context.

Fixes: c965db4446 ("qed: Add support for debug data collection")

Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-13 13:32:58 -04:00
Bjørn Mork 60cfe1eacc qmi_wwan: new Telewell and Sierra device IDs
A new Sierra Wireless EM7305 device ID used in a Toshiba laptop,
and two Longcheer device IDs entries used by Telewell TW-3G HSPA+
branded modems.

Reported-by: Petr Kloc <petr_kloc@yahoo.com>
Reported-by: Teemu Likonen <tlikonen@iki.fi>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-13 13:20:42 -04:00
Florian Fainelli 665fff2923 net: phy: Fix MDIO_THUNDER dependencies
After commit 90eff9096c ("net: phy: Allow splitting MDIO
bus/device support from PHYs") we could create a configuration where
MDIO_DEVICE=y and PHYLIB=m which leads to the following undefined
references:

 drivers/built-in.o: In function `thunder_mdiobus_pci_remove':
>> mdio-thunder.c:(.text+0x2a212f): undefined reference to
>> `mdiobus_unregister'
>> mdio-thunder.c:(.text+0x2a2138): undefined reference to
>> `mdiobus_free'
   drivers/built-in.o: In function `thunder_mdiobus_pci_probe':
   mdio-thunder.c:(.text+0x2a22e7): undefined reference to
`devm_mdiobus_alloc_size'
   mdio-thunder.c:(.text+0x2a236f): undefined reference to
`of_mdiobus_register'

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 90eff9096c ("net: phy: Allow splitting MDIO bus/device support from PHYs")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-13 12:58:19 -04:00
Joe Perches 4a6a97e265 netconsole: Remove duplicate "netconsole: " logging prefix
It's already added by pr_fmt so remove the explicit use.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-13 12:57:40 -04:00
Oliver Neukum eb3c28c155 r8152: give the device version
Getting the device version out of the driver really aids debugging.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-13 12:50:15 -04:00
Jacob Keller 6964e53f55 i40e: fix handling of HW ATR eviction
A recent commit to refactor the driver and remove the hw_disabled_flags
field accidentally introduced two regressions. First, we overwrote
pf->flags which removed various key flags including the MSI-X settings.

Additionally, it was intended that we have now two flags,
HW_ATR_EVICT_CAPABLE and HW_ATR_EVICT_ENABLED, but this was not done,
and we accidentally were mis-using HW_ATR_EVICT_CAPABLE everywhere.

This patch adds the missing piece, HW_ATR_EVICT_ENABLED, and safely
updates pf->flags instead of overwriting it.

Without this patch we will have many problems including disabling MSI-X
support, and we'll attempt to use HW ATR eviction on devices which do
not support it.

Fixes: 47994c119a ("i40e: remove hw_disabled_flags in favor of using separate flag bits", 2017-04-19)
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-12 18:53:02 -04:00
David S. Miller 062bb997d2 mlx5-fixes-2017-06-11
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Merge tag 'mlx5-fixes-2017-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
Mellanox mlx5 fixes 2017-06-11

This series contains some fixes for the mlx5 core and netdev driver.

Please pull and let me know if there's any problem.

For -stable:
("net/mlx5e: Added BW check for DIM decision mechanism")              kernels >= 4.9
("net/mlx5e: Fix wrong indications in DIM due to counter wraparound") kernels >= 4.9
("net/mlx5: Remove several module events out of ethtool stats")       kernels >= 4.10
("net/mlx5: Enable 4K UAR only when page size is bigger than 4K")     kernels >= 4.11

*all patches apply with no issue on their -stable.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 16:40:52 -04:00
Netanel Belgazal e7ff7efae5 net: ena: update ena driver to version 1.1.7
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 16:36:47 -04:00
Netanel Belgazal 800c55cb76 net: ena: bug fix in lost tx packets detection mechanism
check_for_missing_tx_completions() is called from a timer
task and looking for lost tx packets.
The old implementation accumulate all the lost tx packets
and did not check if those packets were retrieved on a later stage.
This cause to a situation where the driver reset
the device for no reason.

Fixes: 1738cd3ed3 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 16:36:47 -04:00
Netanel Belgazal a2cc5198da net: ena: disable admin msix while working in polling mode
Fixes: 1738cd3ed3 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 16:36:47 -04:00
Netanel Belgazal a3af7c18cf net: ena: fix theoretical Rx hang on low memory systems
For the rare case where the device runs out of free rx buffer
descriptors (in case of pressure on kernel  memory),
and the napi handler continuously fail to refill new Rx descriptors
until device rx queue totally runs out of all free rx buffers
to post incoming packet, leading to a deadlock:
* The device won't send interrupts since all the new
Rx packets will be dropped.
* The napi handler won't try to allocate new Rx descriptors
since allocation is part of NAPI that's not being invoked any more

The fix involves detecting this scenario and rescheduling NAPI
(to refill buffers) by the keepalive/watchdog task.

Fixes: 1738cd3ed3 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 16:36:46 -04:00
Netanel Belgazal 0857d92f71 net: ena: add missing unmap bars on device removal
This patch also change the mapping functions to devm_ functions

Fixes: 1738cd3ed3 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 16:36:46 -04:00
Netanel Belgazal 661d2b0cce net: ena: fix race condition between submit and completion admin command
Bug:
"Completion context is occupied" error printout will be noticed in
dmesg.
This error will cause the admin command to fail, which will lead to
an ena_probe() failure or a watchdog reset (depends on which admin
command failed).

Root cause:
__ena_com_submit_admin_cmd() is the function that submits new entries to
the admin queue.
The function have a check that makes sure the queue is not full and the
function does not override any outstanding command.
It uses head and tail indexes for this check.
The head is increased by ena_com_handle_admin_completion() which runs
from interrupt context, and the tail index is increased by the submit
function (the function is running under ->q_lock, so there is no risk
of multithread increment).
Each command is associated with a completion context. This context
allocated before call to __ena_com_submit_admin_cmd() and freed by
ena_com_wait_and_process_admin_cq_interrupts(), right after the command
was completed.

This can lead to a state where the head was increased, the check passed,
but the completion context is still in use.

Solution:
Use the atomic variable ->outstanding_cmds instead of using the head and
the tail indexes.
This variable is safe for use since it is bumped in get_comp_ctx() in
__ena_com_submit_admin_cmd() and is freed by comp_ctxt_release()

Fixes: 1738cd3ed3 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 16:36:46 -04:00
Netanel Belgazal 2d2c600a91 net: ena: add missing return when ena_com_get_io_handlers() fails
Fixes: 1738cd3ed3 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 16:36:46 -04:00
Netanel Belgazal 418df30f7e net: ena: fix bug that might cause hang after consecutive open/close interface.
Fixing a bug that the driver does not unmask the IO interrupts
in ndo_open():
occasionally, the MSI-X interrupt (for one or more IO queues)
can be masked when ndo_close() was called.
If that is followed by ndo open(),
then the MSI-X will be still masked so no interrupt
will be received by the driver.

Fixes: 1738cd3ed3 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 16:36:46 -04:00
Netanel Belgazal a77c1aafcc net: ena: fix rare uncompleted admin command false alarm
The current flow to detect admin completion is:
while (command_not_completed) {
	if (timeout)
		error

	check_for_completion()
		sleep()
   }
So in case the sleep took more than the timeout
(in case the thread/workqueue was not scheduled due to higher priority
task or prolonged VMexit), the driver can detect a stall even if
the completion is present.

The fix changes the order of this function to first check for
completion and only after that check if the timeout expired.

Fixes: 1738cd3ed3 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 16:36:45 -04:00
Majd Dibbiny 91828bd899 net/mlx5: Enable 4K UAR only when page size is bigger than 4K
When the page size isn't bigger than 4K, there is no added value of enabling 4K
UAR feature in the Firmware.

Modified the condition of enabling the 4K UAR accordingly.

Fixes: f502d83495 ("net/mlx5: Activate support for 4K UARs")
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-11 13:10:36 +03:00
Tal Gilboa 53acd76ce5 net/mlx5e: Fix wrong indications in DIM due to counter wraparound
DIM (Dynamically-tuned Interrupt Moderation) is a mechanism designed for
changing the channel interrupt moderation values in order to reduce CPU
overhead for all traffic types.
Each iteration of the algorithm, DIM calculates the difference in
throughput, packet rate and interrupt rate from last iteration in order
to make a decision. DIM relies on counters for each metric. When these
counters get to their type's max value they wraparound. In this case
the delta between 'end' and 'start' samples is negative and when
translated to unsigned integers - very high. This results in a false
indication to the algorithm and might result in a wrong decision.

The fix calculates the 'distance' between 'end' and 'start' samples in a
cyclic way around the relevant type's max value. It can also be viewed as
an absolute value around the type's max value instead of around 0.

Testing show higher stability in DIM profile selection and no wraparound
issues.

Fixes: cb3c7fd4f8 ("net/mlx5e: Support adaptive RX coalescing")
Signed-off-by: Tal Gilboa <talgi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-11 13:10:36 +03:00
Tal Gilboa c3164d2fc4 net/mlx5e: Added BW check for DIM decision mechanism
DIM (Dynamically-tuned Interrupt Moderation) is a mechanism designed for
changing the channel interrupt moderation values in order to reduce CPU
overhead for all traffic types.
Until now only interrupt and packet rate were sampled.
We found a scenario on which we get a false indication since a change in
DIM caused more aggregation and reduced packet rate while increasing BW.

We now regard a change as succesfull iff:
current_BW > (prev_BW + threshold) or
current_BW ~= prev_BW and current_PR > (prev_PR + threshold) or
current_BW ~= prev_BW and current_PR ~= prev_PR and
    current_IR < (prev_IR - threshold)
Where BW = Bandwidth, PR = Packet rate and IR = Interrupt rate

Improvements (ConnectX-4Lx 25GbE, single RX queue, LRO off)
    --------------------------------------------------
    packet size | before[Mb/s] | after[Mb/s] | gain  |
    2B          | 343.4        | 359.4       |  4.5% |
    16B         | 2739.7       | 2814.8      |  2.7% |
    64B         | 9739         | 10185.3     |  4.5% |

Fixes: cb3c7fd4f8 ("net/mlx5e: Support adaptive RX coalescing")
Signed-off-by: Tal Gilboa <talgi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-11 13:10:36 +03:00
Huy Nguyen f729860a17 net/mlx5: Remove several module events out of ethtool stats
Remove the following module event counters out of ethtool stats. The
reason for removing these event counters is that these events do not
occur without techinician's intervention.
  module_pwr_budget_exd
  module_long_range
  module_no_eeprom
  module_enforce_part
  module_unknown_id
  module_unknown_status
  module_plug

Fixes: bedb7c909c ("net/mlx5e: Add port module event counters to ethtool stats")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed by: Gal Pressman <galp@mellanox.com>

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-11 13:10:36 +03:00
Mohamad Haj Yahia 3fece5d676 net/mlx5: Continue health polling until it is explicitly stopped
The issue is that when we get an assert we will stop polling the health
and thus we cant enter error state when we have a real health issue.

Fixes: fd76ee4da5 ('net/mlx5_core: Fix internal error detection conditions')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-11 13:10:36 +03:00
Mohamad Haj Yahia 57f35c93a2 net/mlx5: Fix create vport flow table flow
Send vport number to the create flow table inner method instead of
ignoring the vport argument and sending always 0.

Fixes: b3ba51498b ('net/mlx5: Refactor create flow table method to accept underlay QP')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-06-11 13:10:36 +03:00
Thomas Petazzoni a704bb5c05 net: mvpp2: use {get, put}_cpu() instead of smp_processor_id()
smp_processor_id() should not be used in migration-enabled contexts. We
originally thought it was OK in the specific situation of this driver,
but it was wrong, and calling smp_processor_id() in a migration-enabled
context prints a big fat warning when CONFIG_DEBUG_PREEMPT=y.

Therefore, this commit replaces the smp_processor_id() in
migration-enabled contexts by the appropriate get_cpu/put_cpu sections.

Reported-by: Marc Zyngier <marc.zyngier@arm.com>
Fixes: a786841df7 ("net: mvpp2: handle register mapping and access for PPv2.2")
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 18:22:55 -04:00
Thomas Petazzoni 56b8aae959 net: mvpp2: remove mvpp2_bm_cookie_{build,pool_get}
This commit removes the useless remove
mvpp2_bm_cookie_{build,pool_get} functions. All what
mvpp2_bm_cookie_build() was doing is compute a 32-bit value by
concatenating the pool number and the CPU number... only to get the pool
number re-extracted by mvpp2_bm_cookie_pool_get() later on.

Instead, just get the pool number directly from RX descriptor status,
and pass it to mvpp2_pool_refill() and mvpp2_rx_refill().

This has the added benefit of dropping a smp_processor_id() call in a
migration-enabled context, which is wrong, and is the original
motivation for making this change.

Fixes: 3f518509de ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 18:22:54 -04:00
David S. Miller 5aa32f53ab Revert "net: fec: Add a fec_enet_clear_ethtool_stats() stub for CONFIG_M5272"
This reverts commit bf292f1b2c.

It belongs in 'net-next' not 'net'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:44:28 -04:00
Fabio Estevam bf292f1b2c net: fec: Add a fec_enet_clear_ethtool_stats() stub for CONFIG_M5272
Commit 2b30842b23 ("net: fec: Clear and enable MIB counters on imx51")
introduced fec_enet_clear_ethtool_stats(), but missed to add a stub
for the CONFIG_M5272=y case, causing build failure for the
m5272c3_defconfig.

Add the missing empty stub to fix the build failure.

Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:16:21 -04:00
Philippe Reynes d8dba51de5 net: aquantia: atlantic: remove declaration of hw_atl_utils_hw_set_power
This function is not defined, so no need to declare it.

As I don't have the hardware, I'd be very pleased if
someone may test this patch.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:09:56 -04:00
Mintz, Yuval 3523882229 bnx2x: Don't post statistics to malicious VFs
Once firmware indicates that a given VF is malicious and until
that VF passes an FLR all bets are off - PF can't know anything
is happening to the VF [since VF can't communicate anything to its PF].
But PF is currently still periodically asking device to collect
statistics for the VF which might in turn fill logs by IOMMU blocking
memory access done by the VF's PCI function [in the case VF has unmapped
its buffers].

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:02:55 -04:00
Mintz, Yuval 92f85f05ca bnx2x: Allow vfs to disable txvlan offload
VF clients are configured as enforced, meaning firmware is validating
the correctness of their ethertype/vid during transmission.
Once txvlan is disabled, VF would start getting SKBs for transmission
here vlan is on the payload - but it'll pass the packet's ethertype
instead of the vid, leading to firmware declaring it as malicious.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:02:54 -04:00
David S. Miller f6d4c71332 linux-can-fixes-for-4.12-20170609
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Merge tag 'linux-can-fixes-for-4.12-20170609' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2017-06-09

this is a pull request of 6 patches for net/master.

There's a patch by Stephane Grosjean that fixes an uninitialized symbol warning
in the peak_canfd driver. A patch by Johan Hovold to fix the product-id
endianness in an error message in the the peak_usb driver. A patch by Oliver
Hartkopp to enable CAN FD for virtual CAN devices by default. Three patches by
me, one makes the helper function can_change_state() robust to be called with
cf == NULL. The next patch fixes a memory leak in the gs_usb driver. And the
last one fixes a lockdep splat by properly initialize the per-net
can_rcvlists_lock spin_lock.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-09 15:41:57 -04:00
Mario Molitor 33d4c48213 stmmac: fix for hw timestamp of GMAC3 unit
1.) Bugfix of function stmmac_get_tx_hwtstamp.
    Corrected the tx timestamp available check (same as 4.8 and older)
    Change printout from info syslevel to debug.

2.) Bugfix of function stmmac_get_rx_hwtstamp.
    Corrected the rx timestamp available check (same as 4.8 and older)
    Change printout from info syslevel to debug.

Fixes: ba1ffd74df ("stmmac: fix PTP support for GMAC4")
Signed-off-by: Mario Molitor <mario_molitor@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-09 12:39:26 -04:00