Commit graph

1,169,205 commits

Author SHA1 Message Date
Dmitry Osipenko
aeecc50ace soc/tegra: fuse: Reset hardware
The FUSE controller is enabled at a boot time. Reset it in order to put
hardware and clock into clean and disabled state.

Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 14:03:38 +01:00
Jon Hunter
765d95f8ac soc/tegra: pmc: Add reboot notifier
The Tegra PMC driver implements a restart handler that supports Tegra
specific reboot commands such as placing the device into 'recovery' mode
in order to reprogram the platform. This is accomplished by setting the
appropriate bit in the PMC scratch0 register prior to rebooting the
platform.

For Tegra platforms that support PSCI or EFI, the default Tegra restart
handler is not called and the PSCI or EFI restart handler is called
instead. Hence, for Tegra platforms that support PSCI or EFI, the Tegra
specific reboot commands do not currently work. Fix this by moving the
code that programs the PMC scratch0 register into a separate reboot
notifier that will always be called on reboot.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 14:03:38 +01:00
Dmitry Osipenko
66209e6fbd soc/tegra: Don't print error message when OPPs not available
Previously we assumed that devm_tegra_core_dev_init_opp_table() will
be used only by drivers that will always have device with OPP table,
but this is not true anymore. For example now Tegra30 will have OPP table
for PWM, but Tegra20 not and both use the same driver. Hence let's not
print the error message about missing OPP table in the common helper,
we can print it elsewhere.

Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 14:03:38 +01:00
Quentin Perret
52b28657eb KVM: arm64: pkvm: Unshare guest structs during teardown
Make use of the newly introduced unshare hypercall during guest teardown
to unmap guest-related data structures from the hyp stage-1.

Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-15-qperret@google.com
2021-12-16 12:58:57 +00:00
Will Deacon
b8cc6eb5bd KVM: arm64: Expose unshare hypercall to the host
Introduce an unshare hypercall which can be used to unmap memory from
the hypervisor stage-1 in nVHE protected mode. This will be useful to
update the EL2 ownership state of pages during guest teardown, and
avoids keeping dangling mappings to unreferenced portions of memory.

Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-14-qperret@google.com
2021-12-16 12:58:57 +00:00
Will Deacon
376a240f03 KVM: arm64: Implement do_unshare() helper for unsharing memory
Tearing down a previously shared memory region results in the borrower
losing access to the underlying pages and returning them to the "owned"
state in the owner.

Implement a do_unshare() helper, along the same lines as do_share(), to
provide this functionality for the host-to-hyp case.

Reviewed-by: Andrew Walbran <qwandor@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-13-qperret@google.com
2021-12-16 12:58:57 +00:00
Will Deacon
1ee32109fd KVM: arm64: Implement __pkvm_host_share_hyp() using do_share()
__pkvm_host_share_hyp() shares memory between the host and the
hypervisor so implement it as an invocation of the new do_share()
mechanism.

Note that double-sharing is no longer permitted (as this allows us to
reduce the number of page-table walks significantly), but is thankfully
no longer relied upon by the host.

Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-12-qperret@google.com
2021-12-16 12:58:57 +00:00
Will Deacon
e82edcc75c KVM: arm64: Implement do_share() helper for sharing memory
By default, protected KVM isolates memory pages so that they are
accessible only to their owner: be it the host kernel, the hypervisor
at EL2 or (in future) the guest. Establishing shared-memory regions
between these components therefore involves a transition for each page
so that the owner can share memory with a borrower under a certain set
of permissions.

Introduce a do_share() helper for safely sharing a memory region between
two components. Currently, only host-to-hyp sharing is implemented, but
the code is easily extended to handle other combinations and the
permission checks for each component are reusable.

Reviewed-by: Andrew Walbran <qwandor@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-11-qperret@google.com
2021-12-16 12:58:57 +00:00
Will Deacon
61d99e33e7 KVM: arm64: Introduce wrappers for host and hyp spin lock accessors
In preparation for adding additional locked sections for manipulating
page-tables at EL2, introduce some simple wrappers around the host and
hypervisor locks so that it's a bit easier to read and bit more difficult
to take the wrong lock (or even take them in the wrong order).

Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-10-qperret@google.com
2021-12-16 12:58:57 +00:00
Will Deacon
3d467f7b8c KVM: arm64: Extend pkvm_page_state enumeration to handle absent pages
Explicitly name the combination of SW0 | SW1 as reserved in the pte and
introduce a new PKVM_NOPAGE meta-state which, although not directly
stored in the software bits of the pte, can be used to represent an
entry for which there is no underlying page. This is distinct from an
invalid pte, as stage-2 identity mappings for the host are created
lazily and so an invalid pte there is the same as a valid mapping for
the purposes of ownership information.

This state will be used for permission checking during page transitions
in later patches.

Reviewed-by: Andrew Walbran <qwandor@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-9-qperret@google.com
2021-12-16 12:58:56 +00:00
Quentin Perret
a83e2191b7 KVM: arm64: pkvm: Refcount the pages shared with EL2
In order to simplify the page tracking infrastructure at EL2 in nVHE
protected mode, move the responsibility of refcounting pages that are
shared multiple times on the host. In order to do so, let's create a
red-black tree tracking all the PFNs that have been shared, along with
a refcount.

Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-8-qperret@google.com
2021-12-16 12:58:56 +00:00
Quentin Perret
3f868e142c KVM: arm64: Introduce kvm_share_hyp()
The create_hyp_mappings() function can currently be called at any point
in time. However, its behaviour in protected mode changes widely
depending on when it is being called. Prior to KVM init, it is used to
create the temporary page-table used to bring-up the hypervisor, and
later on it is transparently turned into a 'share' hypercall when the
kernel has lost control over the hypervisor stage-1. In order to prepare
the ground for also unsharing pages with the hypervisor during guest
teardown, introduce a kvm_share_hyp() function to make it clear in which
places a share hypercall should be expected, as we will soon need a
matching unshare hypercall in all those places.

Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-7-qperret@google.com
2021-12-16 12:58:56 +00:00
Will Deacon
82bb02445d KVM: arm64: Implement kvm_pgtable_hyp_unmap() at EL2
Implement kvm_pgtable_hyp_unmap() which can be used to remove hypervisor
stage-1 mappings at EL2.

Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-6-qperret@google.com
2021-12-16 12:58:56 +00:00
Will Deacon
34ec7cbf1e KVM: arm64: Hook up ->page_count() for hypervisor stage-1 page-table
kvm_pgtable_hyp_unmap() relies on the ->page_count() function callback
being provided by the memory-management operations for the page-table.

Wire up this callback for the hypervisor stage-1 page-table.

Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-5-qperret@google.com
2021-12-16 12:58:56 +00:00
Quentin Perret
d6b4bd3f48 KVM: arm64: Fixup hyp stage-1 refcount
In nVHE-protected mode, the hyp stage-1 page-table refcount is broken
due to the lack of refcount support in the early allocator. Fix-up the
refcount in the finalize walker, once the 'hyp_vmemmap' is up and running.

Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-4-qperret@google.com
2021-12-16 12:58:56 +00:00
Quentin Perret
2ea2ff91e8 KVM: arm64: Refcount hyp stage-1 pgtable pages
To prepare the ground for allowing hyp stage-1 mappings to be removed at
run-time, update the KVM page-table code to maintain a correct refcount
using the ->{get,put}_page() function callbacks.

Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-3-qperret@google.com
2021-12-16 12:58:55 +00:00
Quentin Perret
1fac3cfb9c KVM: arm64: Provide {get,put}_page() stubs for early hyp allocator
In nVHE protected mode, the EL2 code uses a temporary allocator during
boot while re-creating its stage-1 page-table. Unfortunately, the
hyp_vmmemap is not ready to use at this stage, so refcounting pages
is not possible. That is not currently a problem because hyp stage-1
mappings are never removed, which implies refcounting of page-table
pages is unnecessary.

In preparation for allowing hypervisor stage-1 mappings to be removed,
provide stub implementations for {get,put}_page() in the early allocator.

Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211215161232.1480836-2-qperret@google.com
2021-12-16 12:58:55 +00:00
Marc Zyngier
ce5b5b05c1 Merge branch kvm-arm64/vgic-fixes-5.17 into kvmarm-master/next
* kvm-arm64/vgic-fixes-5.17:
  : .
  : A few vgic fixes:
  : - Harden vgic-v3 error handling paths against signed vs unsigned
  :   comparison that will happen once the xarray-based vcpus are in
  : - Demote userspace-triggered console output to kvm_debug()
  : .
  KVM: arm64: vgic: Demote userspace-triggered console prints to kvm_debug()
  KVM: arm64: vgic-v3: Fix vcpu index comparison

Signed-off-by: Marc Zyngier <maz@kernel.org>
2021-12-16 12:54:12 +00:00
Kees Cook
3511989cd2 iio: stmpe-adc: Use correctly sized arguments for bit field
The find.h APIs are designed to be used only on unsigned long arguments.
This can technically result in a over-read, but it is harmless in this
case. Regardless, fix it to avoid the warning seen under -Warray-bounds,
which we'd like to enable globally:

In file included from ./include/linux/bitmap.h:9,
                 from ./include/linux/cpumask.h:12,
                 from ./arch/x86/include/asm/cpumask.h:5,
                 from ./arch/x86/include/asm/msr.h:11,
                 from ./arch/x86/include/asm/processor.h:22,
                 from ./arch/x86/include/asm/cpufeature.h:5,
                 from ./arch/x86/include/asm/thread_info.h:53,
                 from ./include/linux/thread_info.h:60,
                 from ./arch/x86/include/asm/preempt.h:7,
                 from ./include/linux/preempt.h:78,
                 from ./include/linux/spinlock.h:55,
                 from ./include/linux/swait.h:7,
                 from ./include/linux/completion.h:12,
                 from drivers/iio/adc/stmpe-adc.c:10:
drivers/iio/adc/stmpe-adc.c: In function 'stmpe_adc_probe':
./include/linux/find.h:98:23: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'u32[1]' {aka 'unsigned int[1]'} [-Warray-bounds]
   98 |                 val = *addr | ~GENMASK(size - 1, offset);
      |                       ^~~~~
drivers/iio/adc/stmpe-adc.c:258:13: note: while referencing 'norequest_mask'
  258 |         u32 norequest_mask = 0;
      |             ^~~~~~~~~~~~~~

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16 12:34:48 +00:00
Miaoqian Lin
1bb0b8b195 soc: ti: knav_dma: Fix NULL vs IS_ERR() checking in dma_init
Since devm_ioremap_resource() function return error pointers.
The pktdma_get_regs() function does not return NULL, It return error
pointers too. Using IS_ERR() to check the return value to fix this.

Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20211214015544.7270-1-linmq006@gmail.com
2021-12-16 06:34:07 -06:00
Minghao Chi
8a457852bc iio:adc:ti-ads8688:: remove redundant ret variable
Return value from ads8688_prog_write() directly instead
of taking this in another redundant variable.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16 12:32:04 +00:00
Dan Carpenter
5d97d9e9a7 iio: addac: ad74413r: fix off by one in ad74413r_parse_channel_config()
The > needs to be >= to prevent accessing one element beyond the end of
the st->channel_configs[] array.

Fixes: fea251b6a5 ("iio: addac: add AD74413R driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Cosmin Tanislav <cosmin.tanislav@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16 12:29:07 +00:00
Xiang wangx
0a52c3f347 iio: adc: ad7606: Fix syntax errors in comments
Delete the redundant word 'the'.

Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16 12:23:54 +00:00
Zach DeCook
c054fe9936 iio: event_monitor: Flush output on event
By flushing the output, iio_event_monitor can be more useful to programs
chained along with it.

  iio_event_monitor stk3310 | awk '/rising/{system("my_unlockscreen.sh")} /falling/{system("my_lockscreen.sh")}'

Without this flush, the above example would buffer a number of events,
then after a while run the lock/unlock scripts several times.

Signed-off-by: Zach DeCook <zachdecook@librem.one>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16 12:20:35 +00:00
Stephen Boyd
0b665d4af3
drm/bridge: ti-sn65dsi86: Set max register for regmap
Set the maximum register to 0xff so we can dump the registers for this
device in debugfs.

Fixes: a095f15c00 ("drm/bridge: add support for sn65dsi86 bridge driver")
Cc: Rob Clark <robdclark@chromium.org>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211215002529.382383-1-swboyd@chromium.org
2021-12-16 13:02:23 +01:00
Eric Dumazet
fc0d026a2f netfilter: nf_nat_masquerade: add netns refcount tracker to masq_dev_work
If compiled with CONFIG_NET_NS_REFCNT_TRACKER=y,
using put_net_track() in iterate_cleanup_work()
and netns_tracker_alloc() in nf_nat_masq_schedule()
might help us finding netns refcount imbalances.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2021-12-16 12:49:34 +01:00
Eric Dumazet
a9382d9389 netfilter: nfnetlink: add netns refcount tracker to struct nfulnl_instance
If compiled with CONFIG_NET_NS_REFCNT_TRACKER=y,
using put_net_track() in nfulnl_instance_free_rcu()
and get_net_track() in instance_create()
might help us finding netns refcount imbalances.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2021-12-16 12:49:34 +01:00
Lars-Peter Clausen
8b7651f259 iio: iio_device_alloc(): Remove unnecessary self drvdata
Drvdata is typically used by drivers to attach driver specific data to a
device. It is used to retrieve driver specific information when only the
device to which the data is attached is available.

In the IIO core in the `iio_device_alloc()` function we call
`iio_device_set_drvdata(indio_dev, indio_dev)`. This sets the drvdata of
the IIO device to itself.

This is rather unnecessary since if we have a pointer to the IIO device to
call `iio_device_get_drvdata()` on it we don't need to call the function
since we already have the pointer. If we only have a pointer to the `struct
device` we can use `dev_to_iio_dev()` to get the IIO device from it.

Furthermore the drvdata is supposed to be reserved for drivers, so it
should not be used by the IIO core in the first place.

The `set_drvdata()` has been around from the very beginning of the IIO
framework and back then it was used in the IIO device sysfs attribute
handling code. But that was subsequently replaced with a `dev_to_iio_dev()`
in commit e53f5ac52e ("iio: Use dev_to_iio_dev()") and other cleanups.

The self `set_drvdata()` is now no longer needed and can be removed.

Verified that there no longer any users by checking for potential users
using the following two coccinelle scripts and reviewing that none of the
matches are problematic code.

<smpl>
@@
struct iio_dev *iio_dev;
expression dev;
identifier fn !~ "(remove|resume|suspend)";
@@
fn(...)
{
...
*iio_dev = dev_get_drvdata(dev)
...
}
</smpl>

<smpl>
@r1@
position p;
struct iio_dev *indio_dev;
identifier dev_fn =~ "^dev_";
identifier devm_fn =~ "^devm_";
@@
(
 dev_fn
|
 devm_fn
)
 (&indio_dev@p->dev, ...)

@@
struct iio_dev *indio_dev;
position p != r1.p;
@@
*&indio_dev@p->dev</smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16 11:44:10 +00:00
Thomas Zimmermann
d0a0b6cd8c drm/ast: Move I2C code into separate source file
Move I2C code into its own source file. Makes the mode-setting
code a little less convoluted.

v3:
	* fix SPDX tag to say 'SPDX-License-Identifier'

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211206091125.29501-4-tzimmermann@suse.de
2021-12-16 12:29:22 +01:00
Thomas Zimmermann
a2cce09c34 drm/ast: Convert I2C code to managed cleanup
Release the I2C adapter as part of the DRM device cleanup. Remove
ast's dedicated helper for struct drm_connector_funcs.destroy.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211206091125.29501-3-tzimmermann@suse.de
2021-12-16 12:29:22 +01:00
Thomas Zimmermann
55dc449a7c drm/ast: Handle failed I2C initialization gracefully
I2C initialization is allowed to fail. In this case, create a connector
without DDC adapter. The current code would dereference a NULL pointer.

Reading the modes from the connector is supposed to work without I2C
adapter. Add the respective test.

v2:
	* init edid to NULL to avoid uninitialized read (Dan)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211206091125.29501-2-tzimmermann@suse.de
2021-12-16 12:29:22 +01:00
Gal Pressman
8a03ef676a net: Fix double 0x prefix print in SKB dump
When printing netdev features %pNF already takes care of the 0x prefix,
remove the explicit one.

Fixes: 6413139dfc ("skbuff: increase verbosity when dumping skb data")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 11:08:15 +00:00
Wenliang Wang
053c9e18c6 virtio_net: fix rx_drops stat for small pkts
We found the stat of rx drops for small pkts does not increment when
build_skb fail, it's not coherent with other mode's rx drops stat.

Signed-off-by: Wenliang Wang <wangwenliang.1995@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 11:07:19 +00:00
Andrey Eremeev
e08cdf6304 dsa: mv88e6xxx: fix debug print for SPEED_UNFORCED
Debug print uses invalid check to detect if speed is unforced:
(speed != SPEED_UNFORCED) should be used instead of (!speed).

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Andrey Eremeev <Axtone4all@yandex.ru>
Fixes: 96a2b40c7b ("net: dsa: mv88e6xxx: add port's MAC speed setter")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:57:21 +00:00
Jiasheng Jiang
407ecd1bd7 sfc_ef100: potential dereference of null pointer
The return value of kmalloc() needs to be checked.
To avoid use in efx_nic_update_stats() in case of the failure of alloc.

Fixes: b593b6f1b4 ("sfc_ef100: statistics gathering")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:55:32 +00:00
Volodymyr Mytnyk
604ba23090 net: prestera: flower template support
Add user template explicit support. At this moment, max
TCAM rule size is utilized for all rules, doesn't matter
which and how much flower matches are provided by user. It
means that some of TCAM space is wasted, which impacts
the number of filters that can be offloaded.

Introducing the template, allows to have more HW offloaded
filters by specifying the template explicitly.

Example:
  tc qd add dev PORT clsact
  tc chain add dev PORT ingress protocol ip \
    flower dst_ip 0.0.0.0/16
  tc filter add dev PORT ingress protocol ip \
    flower skip_sw dst_ip 1.2.3.4/16 action drop

NOTE: chain 0 is the default chain id for "tc chain" & "tc filter"
      command, so it is omitted in the example above.

This patch adds only template support for default chain 0 suppoerted
by prestera driver at this moment. Chains are not supported yet,
and will be added later.

Signed-off-by: Volodymyr Mytnyk <vmytnyk@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:52:53 +00:00
Luiz Angelo Daros de Luca
a5dba0f207 net: dsa: rtl8365mb: add GMII as user port mode
Recent net-next fails to initialize ports with:

 realtek-smi switch: phy mode gmii is unsupported on port 0
 realtek-smi switch lan5 (uninitialized): validation of gmii with
 support 0000000,00000000,000062ef and advertisement
 0000000,00000000,000062ef failed: -22
 realtek-smi switch lan5 (uninitialized): failed to connect to PHY:
 -EINVAL
 realtek-smi switch lan5 (uninitialized): error -22 setting up PHY
 for tree 1, switch 0, port 0

Current net branch(3dd7d40b43663f58d11ee7a3d3798813b26a48f1) is not
affected.

I also noticed the same issue before with older versions but using
a MDIO interface driver, not realtek-smi.

Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:51:11 +00:00
Marc Zyngier
440523b92b KVM: arm64: vgic: Demote userspace-triggered console prints to kvm_debug()
Running the KVM selftests results in these messages being dumped
in the kernel console:

[  188.051073] kvm [469]: VGIC redist and dist frames overlap
[  188.056820] kvm [469]: VGIC redist and dist frames overlap
[  188.076199] kvm [469]: VGIC redist and dist frames overlap

Being amle to trigger this from userspace is definitely not on,
so demote these warnings to kvm_debug().

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211216104507.1482017-1-maz@kernel.org
2021-12-16 10:47:48 +00:00
John Keeping
0546b224cc net: stmmac: dwmac-rk: fix oob read in rk_gmac_setup
KASAN reports an out-of-bounds read in rk_gmac_setup on the line:

	while (ops->regs[i]) {

This happens for most platforms since the regs flexible array member is
empty, so the memory after the ops structure is being read here.  It
seems that mostly this happens to contain zero anyway, so we get lucky
and everything still works.

To avoid adding redundant data to nearly all the ops structures, add a
new flag to indicate whether the regs field is valid and avoid this loop
when it is not.

Fixes: 3bb3d6b1c1 ("net: stmmac: Add RK3566/RK3568 SoC support")
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:47:48 +00:00
Marc Zyngier
c95b1d7ca7 KVM: arm64: vgic-v3: Fix vcpu index comparison
When handling an error at the point where we try and register
all the redistributors, we unregister all the previously
registered frames by counting down from the failing index.

However, the way the code is written relies on that index
being a signed value. Which won't be true once we switch to
an xarray-based vcpu set.

Since this code is pretty awkward the first place, and that the
failure mode is hard to spot, rewrite this loop to iterate
over the vcpus upwards rather than downwards.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211216104526.1482124-1-maz@kernel.org
2021-12-16 10:47:24 +00:00
David S. Miller
e85fbf5355 Merge branch 'gve-improvements'
Jeroen de Borst says:

====================
gve improvements

This patchset consists of unrelated changes:

A bug fix for an issue that disabled jumbo-frame support, a few code
improvements and minor funcitonal changes and 3 new features:
  Supporting tx|rx-coalesce-usec for DQO
  Suspend/resume/shutdown
  Optional metadata descriptors
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:41:54 +00:00
Tao Liu
6081ac2013 gve: Add tx|rx-coalesce-usec for DQO
Adding ethtool support for changing rx-coalesce-usec and tx-coalesce-usec
when using the DQO queue format.

Signed-off-by: Tao Liu <xliutaox@google.com>
Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:41:54 +00:00
Jordan Kim
2c9198356d gve: Add consumed counts to ethtool stats
Being able to see how many descriptors are in-use is helpful
when diagnosing certain issues.

Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: Jordan Kim <jrkim@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:41:54 +00:00
Catherine Sullivan
974365e518 gve: Implement suspend/resume/shutdown
Add support for suspend, resume and shutdown.

Signed-off-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:41:54 +00:00
Willem de Bruijn
497dbb2b97 gve: Add optional metadata descriptor type GVE_TXD_MTD
Allow drivers to pass metadata along with packet data to the device.
Introduce a new metadata descriptor type

* GVE_TXD_MTD

This descriptor is optional. If present it immediate follows the
packet descriptor and precedes the segment descriptor.

This descriptor may be repeated. Multiple metadata descriptors may
follow. There are no immediate uses for this, this is for future
proofing. At present devices allow only 1 MTD descriptor.

The lower four bits of the type_flags field encode GVE_TXD_MTD.
The upper four bits of the type_flags field encodes a *sub*type.

Introduce one such metadata descriptor subtype

* GVE_MTD_SUBTYPE_PATH

This shares path information with the device for network failure
discovery and robust response:

Linux derives ipv6 flowlabel and ECMP multipath from sk->sk_txhash,
and updates this field on error with sk_rethink_txhash. Allow the host
stack to do the same. Pass the tx_hash value if set. Also communicate
whether the path hash is set, or more exactly, what its type is. Define
two common types

  GVE_MTD_PATH_HASH_NONE
  GVE_MTD_PATH_HASH_L4

Concrete examples of error conditions that are resolved are
mentioned in the commits that add sk_rethink_txhash calls. Such as
commit 7788174e87 ("tcp: change IPv6 flow-label upon receiving
spurious retransmission").

Experimental results mirror what the theory suggests: where IPv6
FlowLabel is included in path selection (e.g., LAG/ECMP), flowlabel
rotation on TCP timeout avoids the vast majority of TCP disconnects
that would otherwise have occurred during link failures in long-haul
backbones, when an alternative path is available.

Rotation can be applied to various bad connection signals, such as
timeouts and spurious retransmissions. In aggregate, such flow level
signals can help locate network issues. Define initial common states:

  GVE_MTD_PATH_STATE_DEFAULT
  GVE_MTD_PATH_STATE_TIMEOUT
  GVE_MTD_PATH_STATE_CONGESTION
  GVE_MTD_PATH_STATE_RETRANSMIT

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:41:54 +00:00
Catherine Sullivan
5fd07df47a gve: remove memory barrier around seqno
No longer needed after we introduced the barrier in gve_napi_poll.

Signed-off-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:41:54 +00:00
Catherine Sullivan
13e7939c95 gve: Update gve_free_queue_page_list signature
The id field should be a u32 not a signed int.

Signed-off-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:41:53 +00:00
Catherine Sullivan
d30baacc04 gve: Move the irq db indexes out of the ntfy block struct
Giving the device access to other kernel structs is not ideal.
Move the indexes into their own array and just keep pointers to
them in the ntfy block struct.

Signed-off-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:41:53 +00:00
Jeroen de Borst
a10834a36c gve: Correct order of processing device options
The legacy raw addressing device option was processed before the
new RDA queue format option.  This caused the supported features mask,
which is provided only on the RDA queue format option, not to be set.

This disabled jumbo-frame support when using raw adressing.

Fixes: 255489f5b3 ("gve: Add a jumbo-frame device option")
Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:41:53 +00:00
David S. Miller
75df1a2484 Merge branch 'phylink-pcs-validation'
Russell King says:

====================
net: phylink: add PCS validation

This series allows phylink to include the PCS in its validation step.
There are two reasons to make this change:

1. Some of the network drivers that are making use of the split PCS
   support are already manually calling into their PCS drivers to
   perform validation. E.g. stmmac with xpcs.

2. Logically, some network drivers such as mvneta and mvpp2, the
   restriction we impose in the validate() callback is a property of
   the "PCS" block that we provide rather than the MAC.

This series:

1. Gives phylink a mechanism to query the MAC driver which PCS is
   wishes to use for the PHY interface mode. This is necessary to allow
   the PCS to be involved in the validation step without making changes
   to the configuration.

2. Provide a pcs_validate() method that PCS can implement. This follows
   a similar model to the MAC's validate() callback, but with some minor
   differences due to observations from the various implementations.
   E.g. returning an error code for not-supported and the way the
   advertising bitmap is masked.

3. Convert mvpp2 and mvneta to this as examples of its use. Further
   Conversions are in the pipeline, including for stmmac+xpcs, as well
   as some DSA drivers. Note that DSA conversion to this is conditional
   upon all DSA drivers populating their supported_interfaces bitmap,
   since this is required before mac_select_pcs() can be used.

Existing drivers that set a PCS in mac_prepare() or mac_config(), or
shortly after phylink_create() will continue to work. However, it should
be noted that mac_select_pcs() will be called during phylink_create(),
and thus any PCS returned by mac_select_pcs() must be available by this
time - or we drop the check in phylink_create().

v2: fix kerneldoc typo in patch 1.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-16 10:37:14 +00:00