Commit Graph

6504 Commits

Author SHA1 Message Date
Brett Creeley
be6f7ef69c ice: improve print for VF's when adding/deleting MAC filters
When we fail to add/delete MAC filters in the VF, the print doesn't
distinguish between the two. Fix that by printing whether or not we
failed to add/delete the MAC filter respectively.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 14:44:03 -07:00
Pawel Kaminski
cbfe31b5d7 ice: Change type for queue counts
These queue variables are being assigned values that are type u16.
Change the local variables to match these types. Since these
represent queue counts, they should never be negative.

Signed-off-by: Pawel Kaminski <pawel.kaminski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 14:42:35 -07:00
Akeem G Abodunrin
c275684b92 ice: Move VF resources definition to SR-IOV specific file
In order to use some of the VF resources definition in the SR-IOV specific
virtchnl header file, this patch moves applicable code to
ice_virtchnl_pf.h file accordingly... and they should have been defined in
the destination file originally.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 14:40:46 -07:00
Brett Creeley
11836214d5 ice: Increase size of Mailbox receive queue for many VFs
Currently we use the ICE_MBXQ_LEN for both the Mailbox send and receive
queues that are used to communicate with VFs. This is fine for the send
queue because the PF driver will lock the queue for every single send,
but for the Mailbox receive queue every VF is posting to its Mailbox
send queue and the hardware is then handing the message to the PF on its
Mailbox receive queue. This becomes a problem with many VFs because it
seems to overburden the Mailbox receive queue on the PF. Fix this by
increasing the Mailbox receive queue for the PF to 512 entries.

The number 512 was determined based on the number of VFs supported by
the device. We can have a total of 256 VFs so in the worst case this
allows the VFs to put 2 messages in the PFs Mailbox receive queue at the
same time.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 14:37:15 -07:00
Brett Creeley
60d628ea27 ice: Reduce wait times during VF bringup/reset
Currently there are a couple places where the VF is waiting too long when
checking the status of registers. This is causing the AVF driver to
spin for longer than necessary in the __IAVF_STARTUP state. Sometimes
it causes the AVF to go into the __IAVF_COMM_FAILED, which may retrigger
the __IAVF_STARTUP state. Try to reduce the chance of this happening by
removing unnecessary wait times in VF bringup/resets.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 14:36:00 -07:00
Paul Greenwalt
1337175dec ice: update GLINT_DYN_CTL and GLINT_VECT2FUNC register access
Register access for GLINT_DYN_CTL and GLINT_VECT2FUNC should be within
the PF space and not the absolute device space.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 14:34:36 -07:00
Tony Nguyen
e6c45149b8 ice: Do not always bring up PF VSI in ice_ena_vsi()
During rebuild ice_ena_vsi() is called to recover the VSI state.
This function assumes the PF VSI is always to be enabled, however,
it's possible that during reset/rebuild the interface can be
brought down.  If this occurs, we can attempt to bring up the PF
VSI on a downed interface which can lead to various crashes. If
the interface is not running, do not bring up the associated VSI.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 14:32:42 -07:00
Mitch Williams
ac6f733a7b ice: allow empty Rx descriptors
In some circumstances, the hardware will hand us a receive descriptor
which has no data attached, but is otherwise valid. The receive code was
improperly ignoring these descriptors, which result in an infinite loop.

To fix this, change the receive code to process all descriptors,
regardless of the size of the associated data. Add checks to the
memory-handling functions to allow for zero size.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 14:30:37 -07:00
Usha Ketineni
7829570e28 ice: Fix kernel hang with DCB reset in CEE mode
This patch fixes the set local MIB AQ call failures in the DCB rebuild path
by setting the defaults for the ETS recommended DCB configuration. Also,
willing bits for the DCB configuration needs to be set correctly. Resets
works fine in IEEE mode as the ETS recommended DCB configuration is
populated but not in CEE mode.
Without this patch, PFR causes the kernel hang in CEE mode.

Signed-off-by: Usha Ketineni <usha.k.ketineni@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 14:29:22 -07:00
Brett Creeley
2ab28bb04c ice: Set WB_ON_ITR when we don't re-enable interrupts
Currently when busy polling is enabled we aren't setting/enabling
WB_ON_ITR in the driver. This doesn't break the driver, but it does
cause issues. If we don't enable WB_ON_ITR mode we will still get
write-backs from hardware during polling when a cache line has been
filled, but if a cache line is not filled we will not get the
write-back because WB_ON_ITR is not set. Fix this by enabling
WB_ON_ITR in the driver when interrupts are disabled.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 14:21:21 -07:00
Paul Greenwalt
f1a4a66d23 ice: fix set pause param autoneg check
When ETHTOOL_GLINKSETTINGS is defined get pause param pause->autoneg
reports SW configured setting, however when not defined get pause param
pause->autoneg reports the link status. Set pause param needs to compare
pause->autoneg with the same source as get pause param to block the user
from changing autoneg with the set pause param option, or the user
may be incorrectly blocked from changing Rx|Tx pause settings.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 13:55:28 -07:00
Akeem G Abodunrin
d82dd83df2 ice: Restructure VFs initialization flows
This patch restructures how VFs are configured, and resources allocated.
Instead of freeing resources that were never allocated, and resetting
empty VFs that have never been created - the new flow will just allocate
resources for number of requested VFs based on the availability.

During VFs initialization process, global interrupt is disabled, and
rearmed after getting MSIX vectors for VFs. This allows immediate mailbox
communications, instead of delaying it till later and VFs.
PF communications resulted to using polling instead of actual interrupt.
The issue manifested when creating higher number of VFs (128 VFs) per PF.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 12:28:35 -07:00
Brett Creeley
9118fcd525 ice: Assume that more than one Rx queue is rare in ice_napi_poll
Currently we divide budget by the number of Rx queues per Rx ring
container in ice_napi_poll even if there is only 1. This is an
unnecessary divide for the normal case of 1 Rx ring per Rx ring
container. Fix this by using an unlikely() call in the case where we
actually need to divide.

Also, we will always set budget_per_ring even if there are no Rx rings
in the Rx ring container so we don't need to initialize it to 0.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 12:28:35 -07:00
Brett Creeley
c1ddf1f5c4 ice: Use the software based tail when checking for hung Tx ring
Currently in ice_get_tx_pending we try to read a Tx ring's tail. This is
then compared with the software based head (next_to_clean) to determine
if we have pending work. This will never work because reading of the Tx
ring's tail is no longer supported. Fix this by using the software based
tail (next_to_use) to determine if there is pending work.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-20 12:28:35 -07:00
David S. Miller
446bf64b61 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Merge conflict of mlx5 resolved using instructions in merge
commit 9566e650bf.

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-19 11:54:03 -07:00
Magnus Karlsson
5c129241e2 ixgbe: add support for AF_XDP need_wakeup feature
This patch adds support for the need_wakeup feature of AF_XDP. If the
application has told the kernel that it might sleep using the new bind
flag XDP_USE_NEED_WAKEUP, the driver will then set this flag if it has
no more buffers on the NIC Rx ring and yield to the application. For
Tx, it will set the flag if it has no outstanding Tx completion
interrupts and return to the application.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-08-17 23:07:32 +02:00
Magnus Karlsson
3d0c5f1cd2 i40e: add support for AF_XDP need_wakeup feature
This patch adds support for the need_wakeup feature of AF_XDP. If the
application has told the kernel that it might sleep using the new bind
flag XDP_USE_NEED_WAKEUP, the driver will then set this flag if it has
no more buffers on the NIC Rx ring and yield to the application. For
Tx, it will set the flag if it has no outstanding Tx completion
interrupts and return to the application.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-08-17 23:07:32 +02:00
Magnus Karlsson
9116e5e2b1 xsk: replace ndo_xsk_async_xmit with ndo_xsk_wakeup
This commit replaces ndo_xsk_async_xmit with ndo_xsk_wakeup. This new
ndo provides the same functionality as before but with the addition of
a new flags field that is used to specifiy if Rx, Tx or both should be
woken up. The previous ndo only woke up Tx, as implied by the
name. The i40e and ixgbe drivers (which are all the supported ones)
are updated with this new interface.

This new ndo will be used by the new need_wakeup functionality of XDP
sockets that need to be able to wake up both Rx and Tx driver
processing.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-08-17 23:07:31 +02:00
Greg Kroah-Hartman
35dc61ebfc ixgbe: no need to check return value of debugfs_create functions
When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: intel-wired-lan@lists.osuosl.org
Cc: netdev@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-10 15:25:48 -07:00
Greg Kroah-Hartman
43c4eb0381 i40e: no need to check return value of debugfs_create functions
When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: intel-wired-lan@lists.osuosl.org
Cc: netdev@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-10 15:25:48 -07:00
Greg Kroah-Hartman
ecc5570751 fm10k: no need to check return value of debugfs_create functions
When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: intel-wired-lan@lists.osuosl.org
Cc: netdev@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-10 15:25:48 -07:00
Taehee Yoo
8b6381600d ixgbe: fix possible deadlock in ixgbe_service_task()
ixgbe_service_task() calls unregister_netdev() under rtnl_lock().
But unregister_netdev() internally calls rtnl_lock().
So deadlock would occur.

Fixes: 59dd45d550 ("ixgbe: firmware recovery mode")
Signed-off-by: Taehee Yoo <ap420073@gmail.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>
2019-08-09 13:17:00 -07:00
David S. Miller
05bb520376 Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:

====================
40GbE Intel Wired LAN Driver Updates 2019-08-05

This series contains updates to i40e driver only.

Dmitrii adds missing statistic counters for VEB and VEB TC's.

Slawomir adds support for logging the "Disable Firmware LLDP" flag
option and its current status.

Jake fixes an issue where VF's being notified of their link status
before their queues are enabled which was causing issues.  So always
report link status down when the VF queues are not enabled.  Also adds
future proofing when statistics are added or removed by adding checks to
ensure the data pointer for the strings lines up with the expected
statistics count.

Czeslaw fixes the advertised mode reported in ethtool for FEC, where the
"None BaseR RS" was always being displayed no matter what the mode it
was in.  Also added logging information when the PF is entering or
leaving "allmulti" (or promiscuous) mode.  Fixed up the logging logic
for VF's when leaving multicast mode to not include unicast as well.

v2: drop Aleksandr's patch (previously patch #2 in the series) to
    display the VF MAC address that is set by the VF while community
    feedback is addressed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-06 14:41:45 -07:00
Czeslaw Zagorski
558e93c93f i40e: Remove unicast log when VF is leaving multicast mode.
This patch removes unicast log when VF is leaving multicast mode.
Added check of vf->vf_states &
I40E_VF_STATE_MC_PROMISC/I40E_VF_STATE_UC_PROMISC.
Without this commit, leaving multicast mode logs "unset unicast"
in dmsg.

Signed-off-by: Czeslaw Zagorski <czeslawx.zagorski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-05 11:42:05 -07:00
Jacob Keller
b272235916 i40e: verify string count matches even on early return
Similar to i40e_get_ethtool_stats, add a goto to verify that the data
pointer for the strings lines up with the expected stats count. This
helps ensure that bugs are not introduced when adding stats.

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>
2019-08-05 11:42:05 -07:00
Czeslaw Zagorski
b603f9dc20 i40e: Log info when PF is entering and leaving Allmulti mode.
Add log when PF is entering and leaving allmulti mode. The
change of PF state is visible in dmesg now. Without this commit,
entering and leaving allmulti mode is not logged in dmesg.

Signed-off-by: Czeslaw Zagorski <czeslawx.zagorski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-05 11:42:05 -07:00
Czeslaw Zagorski
0969402fd5 i40e: Update visual effect for advertised FEC mode.
Updates visual effect for advertised mode after setting desired mode.
The mode appears in advertised FEC mode correctly, when ethtool
interface command is called. Without this commit advertised FEC
is displayed regardless of the settings as "None BaseR RS".

Signed-off-by: Czeslaw Zagorski <czeslawx.zagorski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-05 11:42:05 -07:00
Jeff Kirsher
6db6032298 i40e: fix code comments
Found a code comment that needed TLC to correct their formatting.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
2019-08-05 11:42:05 -07:00
Jacob Keller
2ad1274fa3 i40e: don't report link up for a VF who hasn't enabled queues
Commit d3d657a908 ("i40e: update VFs of link state after
GET_VF_RESOURCES") modified the PF driver to notify a VF of
its link status immediately after it requests resources.

This was intended to fix reporting on VF drivers, so that they would
properly report link status.

However, some older VF drivers do not respond well to receiving a link
up notification before queues are enabled. This can cause their state
machine to think that it is safe to send traffic. This results in a Tx
hang on the VF.

More recent versions of the old i40evf and all versions of iavf are
resilient to these early link status messages. However, if a VM happens
to run an older version of the VF driver, this can be problematic.

Record whether the PF has actually enabled queues for the VF. When
reporting link status, always report link down if the queues aren't
enabled. In this way, the VF driver will never receive a link up
notification until after its queues are enabled.

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>
2019-08-05 11:42:05 -07:00
Slawomir Laba
d9f78ceb8f i40e: Log disable-fw-lldp flag change by ethtool
Add logging for disable-fw-lldp flag by ethtool. Added check
for I40E_FLAG_DISABLE_FW_LLDP and logging state in dmesg.
Without this commit there was no clear statement in dmesg
about FW LLDP state in dmesg.

Signed-off-by: Slawomir Laba <slawomirx.laba@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-05 11:42:05 -07:00
Dmitrii Golovanov
f21fa0606c i40e: fix incorrect ethtool statistics veb and veb.tc_
This patch fixes missing call of i40e_update_veb_stats() in function
i40e_get_ethtool_stats() to update stats data of VEB and VEB TC
counters before they are written into ethtool buffer.
Before the patch ethtool counters may fell behind interface counters.

Signed-off-by: Dmitrii Golovanov <dmitrii.golovanov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-08-05 11:42:05 -07:00
Jacob Keller
1fa475fee4 fm10k: fix fm10k_get_fault_pf to read correct address
Fix assignment of the FM10K_FAULT_ADDR_LO register into fault->address
by using a bit-wise |= operation. Without this, the low address is
completely overwriting the high potion of the address. This caused the
fault to incorrectly return only the lower 32 bits of the fault address.

This issue was detected by cppcheck and resolves the following warnings
produced by that tool:

[fm10k_pf.c:1668] -> [fm10k_pf.c:1670]: (style) Variable
'fault->address' is reassigned a value before the old one has been used.

[fm10k_pf.c:1669] -> [fm10k_pf.c:1670]: (style) Variable
'fault->address' is reassigned a value before the old one has been used.

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>
2019-08-04 04:41:44 -07:00
Jacob Keller
a3ffeaf7c2 fm10k: convert NON_Q_VECTORS(hw) into NON_Q_VECTORS
The driver currently uses a macro to decide whether we should use
NON_Q_VECTORS_PF or NON_Q_VECTORS_VF.

However, we also define NON_Q_VECTORS_VF to the same value as
NON_Q_VECTORS_PF. This means that the macro NON_Q_VECTORS(hw) will
always return the same value.

Let's just remove this macro, and replace it directly with an enum value
on the enum non_q_vectors.

This was detected by cppcheck and fixes the following warnings when
building with BUILD=KERNEL

[fm10k_ethtool.c:1123]: (style) Same value in both branches of ternary
operator.

[fm10k_ethtool.c:1142]: (style) Same value in both branches of ternary
operator.

[fm10k_main.c:1826]: (style) Same value in both branches of ternary
operator.

[fm10k_main.c:1849]: (style) Same value in both branches of ternary
operator.

[fm10k_main.c:1858]: (style) Same value in both branches of ternary
operator.

[fm10k_pci.c:901]: (style) Same value in both branches of ternary
operator.

[fm10k_pci.c:1040]: (style) Same value in both branches of ternary
operator.

[fm10k_pci.c:1726]: (style) Same value in both branches of ternary
operator.

[fm10k_pci.c:1763]: (style) Same value in both branches of ternary
operator.

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>
2019-08-04 04:40:04 -07:00
Jacob Keller
d5c2f39500 fm10k: mark unused parameters with __always_unused
Several functions in the fm10k driver have specific function templates,
as they are used as function pointers. The parameters in these functions
are not always used. Explicitly mark unused parameters with the
__always_unused macro, so that the compiler will not warn about them
when building with the -Wunused-parameter warning enabled.

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>
2019-08-04 04:36:49 -07:00
Jacob Keller
27429be75e fm10k: cast page_addr to u8 * when incrementing it
The page_addr variable is a void pointer. Incrementing it before calling
prefetch is technically undefined. Fix this by casting it to a u8*
pointer before incrementing it. This ensures that we increment the
pointer value in byte units, instead of relying on this undefined
behavior.

This was detected by cppcheck, and resolves the following warning
produced by that tool:

[fm10k_main.c:328]: (portability) 'page_addr' is of type 'void *'. When
using void pointers in calculations, the behaviour is undefined.

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>
2019-08-04 04:34:22 -07:00
Jacob Keller
9aac0fbd47 fm10k: explicitly return 0 on success path in function
In the fm10k_handle_resume function, return 0 explicitly at the end of
the function instead of returning the err value.

This was detected by cppcheck and resolves the following style warning
produced by that tool:

[fm10k_pci.c:2768] -> [fm10k_pci.c:2787]: (warning) Identical condition
'err', second condition is always false

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>
2019-08-04 04:32:47 -07:00
Jacob Keller
cb1b5226cb fm10k: remove needless initialization of size local variable
The local variable 'size' in fm10k_dfwd_add_station is initialized, but
is always re-assigned immediately before use. Remove this unnecessary
initialization.

This was detected by cppcheck and resolves the following warning
produced by that tool:

[fm10k_netdev.c:1466]: (style) Variable 'size' is assigned a value that is never used.

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>
2019-08-04 04:31:03 -07:00
Jacob Keller
4d12002fd2 fm10k: remove needless assignment of err local variable
The local variable err in several functions in the fm10k_netdev.c file
is initialized with a value that is never used. The err value is
immediately re-assigned in all cases where it will be checked. Remove
the unnecessary initializers.

This was detected by cppcheck and resolves the following warnings
produced by that tool:

[fm10k_netdev.c:999] -> [fm10k_netdev.c:1004]: (style) Variable 'err' is
reassigned a value before the old one has been used.

[fm10k_netdev.c:1019] -> [fm10k_netdev.c:1024]: (style) Variable 'err'
is reassigned a value before the old one has been used.

[fm10k_netdev.c:64]: (style) Variable 'err' is assigned a value that is
never used.

[fm10k_netdev.c:131]: (style) Variable 'err' is assigned a value that
is never used.

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>
2019-08-04 04:29:04 -07:00
Jacob Keller
d9ecd1f748 fm10k: remove unnecessary variable initializer
The err variable in the fm10k_tlv_attr_parse function is initialized
with zero. However, the function never reads err without first assigning
it from a function call. Remove this unnecessary initialization.

This was detected by cppcheck and resolves the following warning
produced by that tool:

[fm10k_tlv.c:498]: (style) Variable 'err' is assigned a value that is
never used.

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>
2019-08-04 04:20:42 -07:00
Jacob Keller
df87b8fcf8 fm10k: reduce scope of the ring variable
Reduce the scope of the ring local variable in the fm10k_assign_l2_accel
function.

This was detected by cppcheck and resolves the following warning
produced by that tool:

[fm10k_netdev.c:1447]: (style) The scope of the variable 'ring' can be
reduced.

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>
2019-08-01 15:04:35 -07:00
Jacob Keller
8e03f26b71 fm10k: reduce the scope of the result local variable
Reduce the scope of the result local variable in the
fm10k_iov_msg_lport_state_pf function.

This was detected by cppcheck and resolves the following warning
produced by that tool:

[fm10k_pf.c:1435]: (style) The scope of the variable 'result' can be
reduced.

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>
2019-08-01 14:59:21 -07:00
Jacob Keller
71974d7e85 fm10k: reduce the scope of the local msg variable
The msg variable in the fm10k_mbx_validate_msg_size and
fm10k_sm_mbx_transmit functions is only used within the do {} loop
scope. Reduce its scope only to where it is used.

This was detected by cppcheck, and resolves the following warnings
produced by that tool:

[fm10k_mbx.c:299]: (style) The scope of the variable 'msg' can be reduced.
[fm10k_mbx.c:2004]: (style) The scope of the variable 'msg' can be reduced.

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>
2019-08-01 14:57:38 -07:00
Jacob Keller
d56b47791d fm10k: reduce the scope of the local i variable
Reduce the scope of the local loop variable in the
fm10k_check_hang_subtask function.

This was detected by cppcheck and resolves the following warning
produced by that tool:

[driver/fm10k_pci.c:852]: (style) The scope of the variable 'i' can be
reduced.

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>
2019-08-01 14:50:19 -07:00
Jacob Keller
b731d079e1 fm10k: reduce the scope of the err variable
Reduce the scope of the local variable err in the fm10k_detach_subtask
function.

This was detected by cppcheck and resolves the following warning
produced by that tool:

[fm10k_pci.c:403]: (style) The scope of the variable 'err' can be reduced.

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>
2019-08-01 14:47:10 -07:00
Jacob Keller
fb381e60b8 fm10k: reduce the scope of the tx_buffer variable
The tx_buffer local variable in the function fm10k_clean_tx_ring is not
used except inside a smaller block scope. Reduce the scope to its point
of use.

This was detected by cppcheck and resolves the following style warning
produced by that tool:

[fm10k_netdev.c:179]: (style) The scope of the variable 'tx_buffer' can
be reduced.

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>
2019-08-01 14:38:18 -07:00
Jacob Keller
7a432d57e0 fm10k: reduce the scope of the q_idx local variable
Reduce the scope of the q_idx local variable in the fm10k_cache_ring_qos
function.

This was detected by cppcheck and resolves the following style warning
produced by that tool:

[fm10k_main.c:2016]: (style) The scope of the variable 'q_idx' can be
reduced.

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>
2019-08-01 14:15:16 -07:00
Jacob Keller
57928c583d fm10k: reduce the scope of local err variable
Reduce the scope of the local err variable in the fm10k_iov_alloc_data
function.

This was detected by cppcheck and resolves the following style warning
produced by that tool:

[fm10k_iov.c:426]: (style) The scope of the variable 'err' can be reduced.

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>
2019-08-01 14:13:18 -07:00
Jacob Keller
4f9e05fb44 fm10k: reduce the scope of qv local variable
Reduce the scope of the qv vector pointer local variable in the
fm10k_set_coalesce function.

This was detected by cppcheck and resolves the following style warning
produced by that tool:

[fm10k_ethtool.c:658]: (style) The scope of the variable 'qv' can be
reduced.

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>
2019-08-01 14:09:39 -07:00
Jacob Keller
a5c0d86128 fm10k: reduce scope of *p local variable
Reduce the scope of the char *p local variable to only the block where
it is used.

This was detected by cppcheck and resolves the following style warning
produced by that tool:

[fm10k_ethtool.c:229]: (style) The scope of the variable 'p' can be
reduced.

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>
2019-08-01 14:01:18 -07:00
Jacob Keller
30b1b498d7 fm10k: reduce scope of the err variable
Reduce the scope of the err local variable in the fm10k_dcbnl_ieee_setets
function.

This was detected using cppcheck, and resolves the following style
warning:

[fm10k_dcbnl.c:37]: (style) The scope of the variable 'err' can be reduced.

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>
2019-08-01 13:57:33 -07:00