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It's possible that the driver will dereference a qcq that doesn't exist
when calling ionic_reconfigure_queues(), which causes a page fault BUG.
If a reduction in the number of queues is followed by a different
reconfig such as changing the ring size, the driver can hit a NULL
pointer when trying to clean up non-existent queues.
Fix this by checking to make sure both the qcqs array and qcq entry
exists bofore trying to use and free the entry.
Fixes: 101b40a0171f ("ionic: change queue count with no reset")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Link: https://lore.kernel.org/r/20221017233123.15869-1-snelson@pensando.io
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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We tell driver developers to always pass NAPI_POLL_WEIGHT
as the weight to netif_napi_add(). This may be confusing
to newcomers, drop the weight argument, those who really
need to tweak the weight can use netif_napi_add_weight().
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for CAN
Link: https://lore.kernel.org/r/20220927132753.750069-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Assign a random mac address to the VF interface station
address if it boots with a zero mac address in order to match
similar behavior seen in other VF drivers. Handle the errors
where the older firmware does not allow the VF to set its own
station address.
Newer firmware will allow the VF to set the station mac address
if it hasn't already been set administratively through the PF.
Setting it will also be allowed if the VF has trust.
Fixes: fbb39807e9ae ("ionic: support sr-iov operations")
Signed-off-by: R Mohamed Shah <mohamed@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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There is a case found in heavy testing where a link flap happens just
before a firmware Recovery event and the driver gets stuck in the
BROKEN state. This comes from the driver getting interrupted by a FW
generation change when coming back up from the link flap, and the call
to ionic_start_queues() in ionic_link_status_check() fails. This can be
addressed by having the fw_up code clear the BROKEN bit if seen, rather
than waiting for a user to manually force the interface down and then
back up.
Fixes: 9e8eaf8427b6 ("ionic: stop watchdog when in broken state")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The prototype of input features of ionic_set_nic_features() is
netdev_features_t, but the vlan_flags is using the private
definition of ionic drivers. It should use the variable
ctx.cmd.lif_setattr.features, rather than features to check
the vlan flags. So fixes it.
Fixes: beead698b173 ("ionic: Add the basic NDO callbacks for netdev support")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Acked-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The ever-vigilant Linux kernel test robot reminded us that
we need to use the correct include files to be sure that
all the build variations will work correctly. Adding the
vmalloc.h include takes care of declaring our use of vzalloc()
and vfree().
drivers/net/ethernet/pensando/ionic/ionic_lif.c:396:17: error: implicit
declaration of function 'vfree'; did you mean 'kvfree'?
drivers/net/ethernet/pensando/ionic/ionic_lif.c:531:21: warning:
assignment to 'struct ionic_desc_info *' from 'int' makes pointer from
integer without a cast
Fixes: 116dce0ff047 ("ionic: Use vzalloc for large per-queue related buffers")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Link: https://lore.kernel.org/r/20220223015731.22025-1-snelson@pensando.io
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Replace strlcpy with strscpy to clean up a checkpatch complaint.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Use vzalloc for per-queue info structs that don't need any
DMA mapping to help relieve memory pressure found when used
in our limited SOC environment.
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This (ab)use of a data buffer made some static code checkers
rather itchy, so we replace the a generic data buffer with
the union in the struct ionic_vf_setattr_cmd.
Fixes: fbb39807e9ae ("ionic: support sr-iov operations")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The driver can be premature in detecting stalled firmware
when the heartbeat is not updated because the firmware can
occasionally take a long time (more than 2 seconds) to service
a request, and doesn't update the heartbeat during that time.
The firmware heartbeat is not necessarily a steady 1 second
periodic beat, but better described as something that should
progress at least once in every DECVMD_TIMEOUT period.
The single-threaded design in the FW means that if a devcmd
or adminq request launches a large internal job, it is stuck
waiting for that job to finish before it can get back to
updating the heartbeat. Since all requests are "guaranteed"
to finish within the DEVCMD_TIMEOUT period, the driver needs
to less aggressive in checking the heartbeat progress.
We change our current 2 second window to something bigger than
DEVCMD_TIMEOUT which should take care of most of the issue.
We stop checking for the heartbeat while waiting for a request,
as long as we're still watching for the FW status. Lastly,
we make sure our FW status is up to date before running a
devcmd request.
Once we do this, we need to not check the heartbeat on DEV
commands because it may be stalled while we're on the fw_down
path. Instead, we can rely on the is_fw_running check.
Fixes: b2b9a8d7ed13 ("ionic: avoid races in ionic_heartbeat_check")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The dbid_inuse bitmap is not useful in this driver so remove it.
Fixes: 6461b446f2a0 ("ionic: Add interrupts and doorbells")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When the driver is going through reset, it will eventually call
ionic_lif_init(), which does a lot of re-initialization. One
of the re-initialization steps is to setup the adminq and
enable napi for it. If something breaks after this point
we can end up with a kernel NULL pointer dereference through
ionic_adminq_napi.
Fix this by making sure to call napi_disable() in the cleanup
path of ionic_lif_init(). This forces any pending napi contexts
to finish and prevents them from being recalled before deleting
the napi context.
Fixes: 77ceb68e29cc ("ionic: Add notifyq support")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently when an administrator configures a VF via ndo_set_vf*,
the driver will send the set command to FW and then update the
cached value. The cached value is then used when reporting
VF info via ndo_get_vf_config.
A problem is that the VF info may have been updated between
the last ndo_set_vf* and ndo_get_vf_info commands via some
other method, i.e. a VF changes its MAC address (assuming it's
allowed to do so) and since this is all managed by the FW,
this new value won't be reflected in the PF's cache of values.
To fix this, update the driver to always get the latest VF
information by making use of the IONIC_CMD_VF_GETATTR dev
command. The FW may not support getting all the attributes for
IONIC_CMD_VF_GETATTR, so the driver will only update the cached
VF config members if their associated IONIC_CMD_VF_GETATTR
was successful. Otherwise the cached VF config members will
remain the same as what was set in ndo_set_vf*.
Fixes: fbb39807e9ae ("ionic: support sr-iov operations")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When IONIC_EVENT_RESET is received, we only need to start the
fw_down process if we aren't already down, and we need to be
sure to set the FW_STOPPING state on the way.
If this is how we noticed that FW was stopped, it is most
likely from a FW update, and we'll see a new FW generation.
The update happens quickly enough that we might not see
fw_status==0, so we need to be sure things get restarted when
we see the fw_generation change.
Fixes: d2662072c094 ("ionic: monitor fw status generation")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Between fw running and fw actually stopped into reset, we need
a fw_stopping concept to catch and block some actions while
we're transitioning to FW_RESET state. This will help to be
sure the fw_up task is not scheduled until after the fw_down
task has completed.
On some rare occasion timing, it is possible for the fw_up task
to try to run before the fw_down task, then not get run after
the fw_down task has run, leaving the device in a down state.
This is possible if the watchdog goes off in between finding the
down transition and starting the fw_down task, where the later
watchdog sees the FW is back up and schedules a fw_up task.
Fixes: c672412f6172 ("ionic: remove lifs on fw reset")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When allocated, this bitmap is not initialized. Only the first bit is set a
few lines below.
Use bitmap_zalloc() to make sure that it is cleared before being used.
Fixes: 6461b446f2a0 ("ionic: Add interrupts and doorbells")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Link: https://lore.kernel.org/r/6a478eae0b5e6c63774e1f0ddb1a3f8c38fa8ade.1640527506.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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tools/testing/selftests/net/ioam6.sh
7b1700e009cc ("selftests: net: modify IOAM tests for undef bits")
bf77b1400a56 ("selftests: net: Test for the IOAM encapsulation with IPv6")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add vlans to the existing rx_filter_sync mechanics currently
used for managing mac filters.
Older versions of our firmware had no enforced limits on the
number of vlans that the LIF could request, but requesting large
numbers of vlans caused issues in FW memory management, so an
arbitrary limit was added in the FW. The FW now returns -ENOSPC
when it hits that limit, which the driver needs to handle.
Unfortunately, the FW doesn't advertise the vlan id limit,
as it does with mac filters, so the driver won't know the
limit until it bumps into it. We'll grab the current vlan id
count and use that as the limit from there on and thus prevent
getting any more -ENOSPC errors.
Just as is done for the mac filters, the device puts the device
into promiscuous mode when -ENOSPC is seen for vlan ids, and
the driver will track the vlans that aren't synced to the FW.
When vlans are removed, the driver will retry the un-synced
vlans. If all outstanding vlans are synced, the promiscuous
mode will be disabled.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The overflow flags really aren't useful and we don't need lif
struct elements to track them.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The routines that add and delete mac addresses from the
firmware really should be in the file with the rest of
the filter management. This simply moves the functions
with no logic changes.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Bridging, and possibly other upper stack gizmos, adds the
lower device's netdev->dev_addr to its own uc list, and
then requests it be deleted when the upper bridge device is
removed. This delete request also happens with the bridging
vlan_filtering is enabled and then disabled.
Bonding has a similar behavior with the uc list, but since it
also uses set_mac to manage netdev->dev_addr, it doesn't have
the same the failure case.
Because we store our netdev->dev_addr in our uc list, we need
to ignore the delete request from dev_uc_sync so as to not
lose the address and all hope of communicating. Note that
ndo_set_mac_address is expressly changing netdev->dev_addr,
so no limitation is set there.
Fixes: 2a654540be10 ("ionic: Add Rx filter and rx_mode ndo support")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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No conflicts.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Move the setting of the filter-sync-needed bit to the error
case in the filter add routine to be sure we're checking the
live filter status rather than a copy of the pre-sync status.
Fixes: 969f84394604 ("ionic: sync the filters in the work task")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the lif parameter for use in an error message, and
to better match the style of most of the functions calls.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Simplify the code a little by keeping the send_to_hw decision
inside of ionic_qcq_disable rather than in the callers. Also,
add ENXIO to the decision expression.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Widen the coverage of the queue_lock to be sure the lif init
and lif deinit actions are protected. This addresses a hang
seen when a Tx Timeout action was attempted at the same time
as a FW Reset was started.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move creation and deletion of lif mutex a level out to
lif creation and delete, rather than in init and deinit.
This assures that nothing will get hung if anything is waiting
on the mutex while the driver is clearing the lif while handling
the fw_down/fw_up cycle.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Deadlock seen in an instance where the hwstamp configuration
is changed while the driver is running:
[ 3988.736671] schedule_preempt_disabled+0xe/0x10
[ 3988.736676] __mutex_lock.isra.5+0x276/0x4e0
[ 3988.736683] __mutex_lock_slowpath+0x13/0x20
[ 3988.736687] ? __mutex_lock_slowpath+0x13/0x20
[ 3988.736692] mutex_lock+0x2f/0x40
[ 3988.736711] ionic_stop_queues_reconfig+0x16/0x40 [ionic]
[ 3988.736726] ionic_reconfigure_queues+0x43e/0xc90 [ionic]
[ 3988.736738] ionic_lif_config_hwstamp_rxq_all+0x85/0x90 [ionic]
[ 3988.736751] ionic_lif_hwstamp_set_ts_config+0x29c/0x360 [ionic]
[ 3988.736763] ionic_lif_hwstamp_set+0x76/0xf0 [ionic]
[ 3988.736776] ionic_eth_ioctl+0x33/0x40 [ionic]
[ 3988.736781] dev_ifsioc+0x12c/0x420
[ 3988.736785] dev_ioctl+0x316/0x720
This can be demonstrated with "ptp4l -m -i <intf>"
To fix this, we pull the use of the queue_lock further up above the
callers of ionic_reconfigure_queues() and ionic_stop_queues_reconfig().
Fixes: 7ee99fc5ed2e ("ionic: pull hwstamp queue_lock up a level")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The queues can be freed in ionic_close(). They need to be recreated
after ionic_open(). It doesn't need to replay the whole config. It
only needs to create the timestamping queues again.
Signed-off-by: Allen Hubbe <allenbh@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move the hwstamp configuration use of queue_lock up
a level to simplify use and error handling.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the queue configuration lock to ionic_open() and
ionic_stop() so that they don't collide with other in parallel
queue configuration actions such as MTU changes as can be
demonstrated with a tight loop of ifup/change-mtu/ifdown.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make sure the ctx struct has the new mac address before
any save operations happen.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In some cases of fw_down it was called because there was a
fw_generation change, and the firmware is already back up.
In order to keep the down time to a minimum, don't wait for
the next watchdog polling cycle, fire another watchdog off
as soon as we can - an out-of-cycle check won't hurt, and
may well speed up the recovery.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make sure we go into PROMISC mode when we have too many
filters by specifically counting the filters that successfully
get saved to the firmware.
The device advertises max_ucast_filters and max_mcast_filters,
but really only has max_ucast_filters slots available for
uc and mc filters combined.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The filter counting in ionic_lif_addr() really isn't useful,
and potentially misleading, especially when we're checking in
ionic_lif_rx_mode() to see if we need to go into PROMISC mode.
We can safely refactor this and remove a calling layer.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In order to separate the atomic needs of __dev_uc_sync()
and __dev_mc_sync() from the safe rx_mode handling, we need
to have the ndo handler manipulate the driver's filter list,
and later have the driver sync the filters to the firmware,
outside of the atomic context.
Here we put __dev_mc_sync() and __dev_uc_sync() back into the
ndo callback to give them their netif_addr_lock context and
have them update the driver's filter list, flagging changes
that should be made to the device filter list. Later, in the
rx_mode handler, we read those hints and sync up the device's
list as needed.
It is possible for multiple add/delete requests to come from
the stack before the rx_mode task processes the list, but the
handling of the sync status flag should keep everything sorted
correctly. For example, if a delete of an existing filter is
followed by another add before the rx_mode task is run, as can
happen when going in and out of a bond, the add will cancel
the delete and no actual changes will be sent to the device.
We also add a check in the watchdog to see if there are any
stray unsync'd filters, possibly left over from a filter
overflow and waiting to get sync'd after some other filter
gets removed to make room.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since only two functions call through ionic_set_rx_mode(), one
that can sleep and one that can't, we can split the function
and put the bits of code into the callers. This removes an
unnecessary calling layer.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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With the move of mac filter handling to outside of the
ndo_rx_mode context using the IONIC_DW_TYPE_RX_MODE,
we no longer are using IONIC_DW_TYPE_RX_ADDR_ADD and
IONIC_DW_TYPE_RX_ADDR_DEL and they can be removed.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflicting commits, all resolutions pretty trivial:
drivers/bus/mhi/pci_generic.c
5c2c85315948 ("bus: mhi: pci-generic: configurable network interface MRU")
56f6f4c4eb2a ("bus: mhi: pci_generic: Apply no-op for wake using sideband wake boolean")
drivers/nfc/s3fwrn5/firmware.c
a0302ff5906a ("nfc: s3fwrn5: remove unnecessary label")
46573e3ab08f ("nfc: s3fwrn5: fix undefined parameter values in dev_err()")
801e541c79bb ("nfc: s3fwrn5: fix undefined parameter values in dev_err()")
MAINTAINERS
7d901a1e878a ("net: phy: add Maxlinear GPY115/21x/24x driver")
8a7b46fa7902 ("MAINTAINERS: add Yasushi SHOJI as reviewer for the Microchip CAN BUS Analyzer Tool driver")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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If there's only one queue, there is no need to enable
the rxhashing.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Initialize err to 0 instead of ENOMEM, and specifically set
err to ENOMEM in the devm_kcalloc() failure cases.
Also, add an error message to the end of reconfig.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When running in a small kdump kernel, we can play nice and
minimize our resource use to help make sure that kdump is
successful in its mission.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Most users of ndo_do_ioctl are ethernet drivers that implement
the MII commands SIOCGMIIPHY/SIOCGMIIREG/SIOCSMIIREG, or hardware
timestamping with SIOCSHWTSTAMP/SIOCGHWTSTAMP.
Separate these from the few drivers that use ndo_do_ioctl to
implement SIOCBOND, SIOCBR and SIOCWANDEV commands.
This is a purely cosmetic change intended to help readers find
their way through the implementation.
Cc: Doug Ledford <dledford@redhat.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Vivien Didelot <vivien.didelot@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Vladimir Oltean <olteanv@gmail.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move the interrupt coalesce value update out of the napi
thread and into the dim_work thread and set it only when it
has actually changed.
Fixes: 04a834592bf5 ("ionic: dynamic interrupt moderation")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move the bulk of the code from ionic_set_rx_mode(), which
can be called from atomic context, into ionic_lif_rx_mode()
which is a safe context.
A call from the stack will get pushed off into a work thread,
but it is also possible to simultaneously have a call driven
by a queue reconfig request from an ethtool command or fw
recovery event. We add a mutex around the rx_mode work to be
sure they don't collide.
Fixes: 81dbc24147f9 ("ionic: change set_rx_mode from_ndo to can_sleep")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Split the call into ionic_lif_hwstamp_set() to have two
separate interfaces, one from the ioctl() for changing the
configuration and one for replaying the current configuration
after a FW RESET.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When starting the queues in the link-check, don't go into
the BROKEN state if the return was EBUSY.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When returning after a firmware reset, re-start the
PTP after we've restarted the general queues.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Clean up variable declarations.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Let the network stack know we've got support for timestamping
the packets.
Signed-off-by: Allen Hubbe <allenbh@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Brett Creeley
Jakub Kicinski
R Mohamed Shah
Shannon Nelson
Jian Shen
Christophe JAILLET
Arnd Bergmann