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1107633 commits

Author SHA1 Message Date
Mika Westerberg
94581b25d8 thunderbolt: Move tb_port_state() prototype to correct place
This should be before tb_wait_for_port() following how the functions in
switch.c are organized.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-05-05 09:24:55 +03:00
Mika Westerberg
90f720d229 thunderbolt: Add debug logging when lane is enabled/disabled
This is useful when debugging possible issues.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-05-05 09:24:49 +03:00
Mark Brown
8f2ca252ee ARM: dts: imx6qdl-udoo: Disable USB host to work around boot issues
Attempting to boot my Udoo Dual and Quad with mainline hangs during boot
after printing:

[    3.270471] imx_usb 2184000.usb: No over current polarity defined
[    3.922502] mxs_phy 20c9000.usbphy: Data pin can't make good contact.
[    3.940097] imx_usb 2184200.usb: No over current polarity defined

where imx_usb 2184200.usb is usbh1 in the DT. Adding debug prints to the
code seems to show that we lock up at the first read in usbmisc_imx6q_init()
which in combination with the above logging about the USB controllers
suggests that we lock up on the first read in usbmisc_imx6q_init(). Looking
at some of the other i.MX6 boards and the warning messages that are being
printed suggests that there is bitrot in the DTS for the device so disable
it for now, with it disabled the board boots successfully.  Clearly this is
not a real fix, but it does allow some use of the board with mainline.

Similar behaviour is seen all the way back as far as v4.19, I tried going
back to when the board was added but had toolchain issues. Vendor provided
binaries seem fine on the boards so it seems likely that the hardware is
fine and the issue is with some combination of the DT and kernel.  This
should obviously be resolved properly but for now this at least allows
the kernel to boot with reduced functionality on these systems.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 13:40:16 +08:00
Krzysztof Kozlowski
552de48b9e ARM: dts: imx27: use new 'dma-channels' property
The '#dma-channels' property was deprecated in favor of one defined by
generic dma-common DT bindings.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 13:28:26 +08:00
Krzysztof Kozlowski
5bb0276031 dt-bindings: dmaengine: fsl-imx: deprecate '#dma-channels' and '#dma-requests'
The generic properties, used in most of the drivers and defined in
generic dma-common DT bindings, are 'dma-channels' and 'dma-requests'.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 13:27:24 +08:00
Alexander Shiyan
fcc070a44e ARM: dts: imx6qdl-phytec: Add LED labels
This allows boards the option of adding properties or disabling the
LEDs entirely.

Signed-off-by: Alexander Shiyan <eagle.alexander923@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 12:54:23 +08:00
Matthew Wilcox (Oracle)
b9ff43dd27 mm/readahead: Fix readahead with large folios
Reading 100KB chunks from a big file (eg dd bs=100K) leads to poor
readahead behaviour.  Studying the traces in detail, I noticed two
problems.

The first is that we were setting the readahead flag on the folio which
contains the last byte read from the block.  This is wrong because we
will trigger readahead at the end of the read without waiting to see
if a subsequent read is going to use the pages we just read.  Instead,
we need to set the readahead flag on the first folio _after_ the one
which contains the last byte that we're reading.

The second is that we were looking for the index of the folio with the
readahead flag set to exactly match the start + size - async_size.
If we've rounded this, either down (as previously) or up (as now),
we'll think we hit a folio marked as readahead by a different read,
and try to read the wrong pages.  So round the expected index to the
order of the folio we hit.

Reported-by: Guo Xuenan <guoxuenan@huawei.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2022-05-05 00:47:29 -04:00
Matthew Wilcox (Oracle)
170f37d6aa block: Do not call folio_next() on an unreferenced folio
It is unsafe to call folio_next() on a folio unless you hold a reference
on it that prevents it from being split or freed.  After returning
from the iterator, iomap calls folio_end_writeback() which may drop
the last reference to the page, or allow the page to be split.  If that
happens, the iterator will not advance far enough through the bio_vec,
leading to assertion failures like the BUG() in folio_end_writeback()
that checks we're not trying to end writeback on a page not currently
under writeback.  Other assertion failures were also seen, but they're
all explained by this one bug.

Fix the bug by remembering where the next folio starts before returning
from the iterator.  There are other ways of fixing this bug, but this
seems the simplest.

Reported-by: Darrick J. Wong <djwong@kernel.org>
Tested-by: Darrick J. Wong <djwong@kernel.org>
Reported-by: Brian Foster <bfoster@redhat.com>
Tested-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2022-05-05 00:47:29 -04:00
Michael Walle
339c8beae8 arm64: dts: freescale: reduce the interrup-map-mask
Reduce the interrupt-map-mask of the external interrupt controller to
0xf to align with the devicetree schema.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 11:55:55 +08:00
Michael Walle
51b9d74cdb ARM: dts: ls1021a: reduce the interrupt-map-mask
Reduce the interrupt-map-mask of the external interrupt controller to
7 to align with the devicetree schema.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 11:55:41 +08:00
Adam Ford
5446ff1a67 arm64: dts: imx8mn-beacon: Enable RTS-CTS on UART3
There is a header for a DB9 serial port, but any attempts to use
hardware handshaking fail.  Enable RTS and CTS pin muxing and enable
handshaking in the uart node.

Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 11:53:28 +08:00
Adam Ford
4ce01ce36d arm64: dts: imx8mm-beacon: Enable RTS-CTS on UART3
There is a header for a DB9 serial port, but any attempts to use
hardware handshaking fail.  Enable RTS and CTS pin muxing and enable
handshaking in the uart node.

Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 11:53:20 +08:00
Marek Vasut
42c1a6f62e arm64: dts: imx8mm: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC
The I2C2 has SMBus device SMSC USB2514Bi connected to it, the device is
capable of up to 100 kHz operation. Reduce the bus frequency to 100 kHz
to guarantee this I2C device can work correctly.

Fixes: 583f24ae42 ("arm64: dts: imx8mm: Add support for Data Modul i.MX8M Mini eDM SBC")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: NXP Linux Team <linux-imx@nxp.com>
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 11:51:25 +08:00
Marek Vasut
13305aa536 arm64: dts: imx8mm: Disable USB2 OC on Data Modul i.MX8M Mini eDM SBC
The USB2 port has USB Hub permanently connected to it, disable OC
to avoid getting false OC indication.

Fixes: 583f24ae42 ("arm64: dts: imx8mm: Add support for Data Modul i.MX8M Mini eDM SBC")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: NXP Linux Team <linux-imx@nxp.com>
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 11:51:16 +08:00
Marek Vasut
13e4e43a19 arm64: dts: imx8mm: Add CPLD on MX8Menlo board
The CPLD on MX8Menlo board is used to operate custom hardware,
the CPLD content is compatible with previous M53Menlo CPLD,
add the bindings.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: devicetree@vger.kernel.org
To: linux-arm-kernel@lists.infradead.org
Reviewed-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 11:47:43 +08:00
Jakub Kicinski
4950b6990e Merge branch 'ocelot-vcap-cleanups'
Vladimir Oltean says:

====================
Ocelot VCAP cleanups

This is a series of minor code cleanups brought to the Ocelot switch
driver logic for VCAP filters.

- don't use list_for_each_safe() in ocelot_vcap_filter_add_to_block
- don't use magic numbers for OCELOT_POLICER_DISCARD
====================

Link: https://lore.kernel.org/r/20220503120150.837233-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 20:42:18 -07:00
Vladimir Oltean
91d350d661 net: mscc: ocelot: don't use magic numbers for OCELOT_POLICER_DISCARD
OCELOT_POLICER_DISCARD helps "kill dropped packets dead" since a
PERMIT/DENY mask mode with a port mask of 0 isn't enough to stop the CPU
port from receiving packets removed from the forwarding path.

The hardcoded initialization done for it in ocelot_vcap_init() is
confusing. All we need from it is to have a rate and a burst size of 0.

Reuse qos_policer_conf_set() for that purpose.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 20:42:15 -07:00
Vladimir Oltean
8e90c499bd net: mscc: ocelot: drop port argument from qos_policer_conf_set
The "port" argument is used for nothing else except printing on the
error path. Print errors on behalf of the policer index, which is less
confusing anyway.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 20:42:15 -07:00
Vladimir Oltean
09fd1e0d14 net: mscc: ocelot: use list_for_each_entry in ocelot_vcap_filter_add_to_block
Unify the code paths for adding to an empty list and to a list with
elements by keeping a "pos" list_head element that indicates where to
insert. Initialize "pos" with the list head itself in case
list_for_each_entry() doesn't iterate over any element.

Note that list_for_each_safe() isn't needed because no element is
removed from the list while iterating.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 20:42:15 -07:00
Vladimir Oltean
3825a0d027 net: mscc: ocelot: add to tail of empty list in ocelot_vcap_filter_add_to_block
This makes no functional difference but helps in minimizing the delta
for a future change.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 20:42:14 -07:00
Vladimir Oltean
0a448bba50 net: mscc: ocelot: use list_add_tail in ocelot_vcap_filter_add_to_block()
list_add(..., pos->prev) and list_add_tail(..., pos) are equivalent, use
the later form to unify with the case where the list is empty later.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 20:42:14 -07:00
Michael Walle
fa728505f3 dt-bindings: net: lan966x: fix example
In commit 4fdabd509d ("dt-bindings: net: lan966x: remove PHY reset")
the PHY reset was removed, but I failed to remove it from the example.
Fix it.

Fixes: 4fdabd509d ("dt-bindings: net: lan966x: remove PHY reset")
Reported-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220503132038.2714128-1-michael@walle.cc
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 20:40:19 -07:00
Vladimir Oltean
5a7c5f70c7 selftests: ocelot: tc_flower_chains: specify conform-exceed action for policer
As discussed here with Ido Schimmel:
https://patchwork.kernel.org/project/netdevbpf/patch/20220224102908.5255-2-jianbol@nvidia.com/

the default conform-exceed action is "reclassify", for a reason we don't
really understand.

The point is that hardware can't offload that police action, so not
specifying "conform-exceed" was always wrong, even though the command
used to work in hardware (but not in software) until the kernel started
adding validation for it.

Fix the command used by the selftest by making the policer drop on
exceed, and pass the packet to the next action (goto) on conform.

Fixes: 8cd6b020b6 ("selftests: ocelot: add some example VCAP IS1, IS2 and ES0 tc offloads")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20220503121428.842906-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 19:40:19 -07:00
Denys Drozdov
b1f7836d93 dt-bindings: arm: fsl: add toradex,colibri-imx6ull
Add toradex,colibri-imx6ull for carrier board dts,
including aster, iris and iris-v2 device tree,
wifi and nonwifi variants for NAND and eMMC modules.

Signed-off-by: Denys Drozdov <denys.drozdov@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 10:39:19 +08:00
Fabio Estevam
ce92db719a ARM: dts: imx6sl: Add a label for the cpu node
Add a label for the cpu node, so that board devicetree files can
reference to the CPU node.

This is useful for describing a PMIC voltage that supplies the CPU
voltage.

For example:

&cpu0 {
	cpu-supply = <&sw1_reg>;

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 10:33:05 +08:00
Jakub Kicinski
ef56248981 Merge branch 'insufficient-tcp-source-port-randomness'
Willy Tarreau says:

====================
insufficient TCP source port randomness

In a not-yet published paper, Moshe Kol, Amit Klein, and Yossi Gilad
report being able to accurately identify a client by forcing it to emit
only 40 times more connections than the number of entries in the
table_perturb[] table, which is indexed by hashing the connection tuple.
The current 2^8 setting allows them to perform that attack with only 10k
connections, which is not hard to achieve in a few seconds.

Eric, Amit and I have been working on this for a few weeks now imagining,
testing and eliminating a number of approaches that Amit and his team were
still able to break or that were found to be too risky or too expensive,
and ended up with the simple improvements in this series that resists to
the attack, doesn't degrade the performance, and preserves a reliable port
selection algorithm to avoid connection failures, including the odd/even
port selection preference that allows bind() to always find a port quickly
even under strong connect() stress.

The approach relies on several factors:
  - resalting the hash secret that's used to choose the table_perturb[]
    entry every 10 seconds to eliminate slow attacks and force the
    attacker to forget everything that was learned after this delay.
    This already eliminates most of the problem because if a client
    stays silent for more than 10 seconds there's no link between the
    previous and the next patterns, and 10s isn't yet frequent enough
    to cause too frequent repetition of a same port that may induce a
    connection failure ;

  - adding small random increments to the source port. Previously, a
    random 0 or 1 was added every 16 ports. Now a random 0 to 7 is
    added after each port. This means that with the default 32768-60999
    range, a worst case rollover happens after 1764 connections, and
    an average of 3137. This doesn't stop statistical attacks but
    requires significantly more iterations of the same attack to
    confirm a guess.

  - increasing the table_perturb[] size from 2^8 to 2^16, which Amit
    says will require 2.6 million connections to be attacked with the
    changes above, making it pointless to get a fingerprint that will
    only last 10 seconds. Due to the size, the table was made dynamic.

  - a few minor improvements on the bits used from the hash, to eliminate
    some unfortunate correlations that may possibly have been exploited
    to design future attack models.

These changes were tested under the most extreme conditions, up to
1.1 million connections per second to one and a few targets, showing no
performance regression, and only 2 connection failures within 13 billion,
which is less than 2^-32 and perfectly within usual values.

The series is split into small reviewable changes and was already reviewed
by Amit and Eric.
====================

Link: https://lore.kernel.org/r/20220502084614.24123-1-w@1wt.eu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 19:22:35 -07:00
Willy Tarreau
e8161345dd tcp: drop the hash_32() part from the index calculation
In commit 190cc82489 ("tcp: change source port randomizarion at
connect() time"), the table_perturb[] array was introduced and an
index was taken from the port_offset via hash_32(). But it turns
out that hash_32() performs a multiplication while the input here
comes from the output of SipHash in secure_seq, that is well
distributed enough to avoid the need for yet another hash.

Suggested-by: Amit Klein <aksecurity@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 19:22:33 -07:00
Willy Tarreau
4c2c8f03a5 tcp: increase source port perturb table to 2^16
Moshe Kol, Amit Klein, and Yossi Gilad reported being able to accurately
identify a client by forcing it to emit only 40 times more connections
than there are entries in the table_perturb[] table. The previous two
improvements consisting in resalting the secret every 10s and adding
randomness to each port selection only slightly improved the situation,
and the current value of 2^8 was too small as it's not very difficult
to make a client emit 10k connections in less than 10 seconds.

Thus we're increasing the perturb table from 2^8 to 2^16 so that the
same precision now requires 2.6M connections, which is more difficult in
this time frame and harder to hide as a background activity. The impact
is that the table now uses 256 kB instead of 1 kB, which could mostly
affect devices making frequent outgoing connections. However such
components usually target a small set of destinations (load balancers,
database clients, perf assessment tools), and in practice only a few
entries will be visited, like before.

A live test at 1 million connections per second showed no performance
difference from the previous value.

Reported-by: Moshe Kol <moshe.kol@mail.huji.ac.il>
Reported-by: Yossi Gilad <yossi.gilad@mail.huji.ac.il>
Reported-by: Amit Klein <aksecurity@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 19:22:28 -07:00
Willy Tarreau
e926147618 tcp: dynamically allocate the perturb table used by source ports
We'll need to further increase the size of this table and it's likely
that at some point its size will not be suitable anymore for a static
table. Let's allocate it on boot from inet_hashinfo2_init(), which is
called from tcp_init().

Cc: Moshe Kol <moshe.kol@mail.huji.ac.il>
Cc: Yossi Gilad <yossi.gilad@mail.huji.ac.il>
Cc: Amit Klein <aksecurity@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 19:22:21 -07:00
Willy Tarreau
ca7af04025 tcp: add small random increments to the source port
Here we're randomly adding between 0 and 7 random increments to the
selected source port in order to add some noise in the source port
selection that will make the next port less predictable.

With the default port range of 32768-60999 this means a worst case
reuse scenario of 14116/8=1764 connections between two consecutive
uses of the same port, with an average of 14116/4.5=3137. This code
was stressed at more than 800000 connections per second to a fixed
target with all connections closed by the client using RSTs (worst
condition) and only 2 connections failed among 13 billion, despite
the hash being reseeded every 10 seconds, indicating a perfectly
safe situation.

Cc: Moshe Kol <moshe.kol@mail.huji.ac.il>
Cc: Yossi Gilad <yossi.gilad@mail.huji.ac.il>
Cc: Amit Klein <aksecurity@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 19:22:21 -07:00
Eric Dumazet
4dfa9b438e tcp: resalt the secret every 10 seconds
In order to limit the ability for an observer to recognize the source
ports sequence used to contact a set of destinations, we should
periodically shuffle the secret. 10 seconds looks effective enough
without causing particular issues.

Cc: Moshe Kol <moshe.kol@mail.huji.ac.il>
Cc: Yossi Gilad <yossi.gilad@mail.huji.ac.il>
Cc: Amit Klein <aksecurity@gmail.com>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 19:22:21 -07:00
Willy Tarreau
9e9b70ae92 tcp: use different parts of the port_offset for index and offset
Amit Klein suggests that we use different parts of port_offset for the
table's index and the port offset so that there is no direct relation
between them.

Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Moshe Kol <moshe.kol@mail.huji.ac.il>
Cc: Yossi Gilad <yossi.gilad@mail.huji.ac.il>
Cc: Amit Klein <aksecurity@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 19:22:20 -07:00
Willy Tarreau
b2d057560b secure_seq: use the 64 bits of the siphash for port offset calculation
SipHash replaced MD5 in secure_ipv{4,6}_port_ephemeral() via commit
7cd23e5300 ("secure_seq: use SipHash in place of MD5"), but the output
remained truncated to 32-bit only. In order to exploit more bits from the
hash, let's make the functions return the full 64-bit of siphash_3u32().
We also make sure the port offset calculation in __inet_hash_connect()
remains done on 32-bit to avoid the need for div_u64_rem() and an extra
cost on 32-bit systems.

Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Moshe Kol <moshe.kol@mail.huji.ac.il>
Cc: Yossi Gilad <yossi.gilad@mail.huji.ac.il>
Cc: Amit Klein <aksecurity@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 19:22:20 -07:00
Fabio Estevam
080d681bf3 arm64: defconfig: Enable the WM8524 codec driver
imx8mn-evk has a WM8524 codec.

Enable the WM8524 codec driver so that audio can be functional
on this board.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 10:18:47 +08:00
Vasily Averin
425b9c7f51 memcg: accounting for objects allocated for new netdevice
Creating a new netdevice allocates at least ~50Kb of memory for various
kernel objects, but only ~5Kb of them are accounted to memcg. As a result,
creating an unlimited number of netdevice inside a memcg-limited container
does not fall within memcg restrictions, consumes a significant part
of the host's memory, can cause global OOM and lead to random kills of
host processes.

The main consumers of non-accounted memory are:
 ~10Kb   80+ kernfs nodes
 ~6Kb    ipv6_add_dev() allocations
  6Kb    __register_sysctl_table() allocations
  4Kb    neigh_sysctl_register() allocations
  4Kb    __devinet_sysctl_register() allocations
  4Kb    __addrconf_sysctl_register() allocations

Accounting of these objects allows to increase the share of memcg-related
memory up to 60-70% (~38Kb accounted vs ~54Kb total for dummy netdevice
on typical VM with default Fedora 35 kernel) and this should be enough
to somehow protect the host from misuse inside container.

Other related objects are quite small and may not be taken into account
to minimize the expected performance degradation.

It should be separately mentonied ~300 bytes of percpu allocation
of struct ipstats_mib in snmp6_alloc_dev(), on huge multi-cpu nodes
it can become the main consumer of memory.

This patch does not enables kernfs accounting as it affects
other parts of the kernel and should be discussed separately.
However, even without kernfs, this patch significantly improves the
current situation and allows to take into account more than half
of all netdevice allocations.

Signed-off-by: Vasily Averin <vvs@openvz.org>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/354a0a5f-9ec3-a25c-3215-304eab2157bc@openvz.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-04 19:16:46 -07:00
Fabio Estevam
dab98061d7 arm64: dts: imx8mq-kontron-pitx-imx8m: Use the standard 'uart-has-rtscts'
The usage of the 'fsl,uart-has-rtscts' property is deprecated.

Use the standard 'uart-has-rtscts' instead.

Cc: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-By: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 10:13:14 +08:00
Fabio Estevam
83b41ad1dc arm64: dts: imx8mp-verdin: Use the standard 'uart-has-rtscts'
The usage of the 'fsl,uart-has-rtscts' property is deprecated.

Use the standard 'uart-has-rtscts' instead.

Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 10:12:58 +08:00
Fabio Estevam
89bbe4e4ba ARM: dts: imx6ul-kontron-n6x1x-s: Use the standard 'uart-has-rtscts'
The usage of the 'fsl,uart-has-rtscts' property is deprecated.

Use the standard 'uart-has-rtscts' instead.

Cc: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 10:09:31 +08:00
Fabio Estevam
a25875276e ARM: dts: imx6dl-plybas: Use the standard 'uart-has-rtscts'
The usage of the 'fsl,uart-has-rtscts' property is deprecated.

Use the standard 'uart-has-rtscts' instead.

Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 10:08:58 +08:00
Fabio Estevam
3a70c8b607 ARM: dts: mba6ulx: Remove unnecessary #address-cells/#size-cells
The following W=1 dtc warning is seen:

arch/arm/boot/dts/mba6ulx.dtsi:33.26-64.4: Warning (avoid_unnecessary_addr_size): /gpio-keys: unnecessary #address-cells/#size-cells without "ranges" or child "reg" property

Remove the unnecessary #address-cells/#size-cells to fix it.

Fixes: 7b8861d8e6 ("ARM: dts: imx6ul: add TQ-Systems MBa6ULx device trees")
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 10:06:12 +08:00
Paul Elder
29f440a7bd arm64: dts: imx8mp: Add MEDIA_BLK_CTRL
Add a DT node for the MEDIA_BLK_CTRL, which provides power domains for
the camera and display devices.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 09:34:33 +08:00
Laurent Pinchart
9d89189d52 arm64: dts: imx8mp: Add MEDIAMIX power domains
Add the power domains related to the MEDIAMIX to the GPC.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 09:32:55 +08:00
Lucas Stach
2ae42e0c0b arm64: dts: imx8mp: add HSIO power-domains
This adds the GPC and HSIO blk-ctrl nodes providing power control for
the high-speed (USB and PCIe) IOs.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 09:32:02 +08:00
Lucas Stach
e3442022f5 soc: imx: add i.MX8MP HDMI blk-ctrl
This adds driver support for the HDMI blk-ctrl found on the
i.MX8MP SoC.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 09:28:58 +08:00
Paul Elder
07614fed00 soc: imx: imx8m-blk-ctrl: Add i.MX8MP media blk-ctrl
Add the description for the i.MX8MP media blk-ctrl.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Tested-by: Marek Vasut <marex@denx.de> # MX8MP LCDIF #1 and #2
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 09:28:57 +08:00
Lucas Stach
556f5cf956 soc: imx: add i.MX8MP HSIO blk-ctrl
The i.MX8MP added some blk-ctrl peripherals that don't follow the regular
structure of the blk-ctrls in the previous SoCs. Add a new file for those
with currently only the HSIO blk-ctrl being supported. Others will be added
later on.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 09:28:57 +08:00
Shawn Guo
a0c756681b Merge commit 'f11cf9e35e' into imx/drivers 2022-05-05 09:28:24 +08:00
Manoj Sai
7a0a377425 dt-bindings: arm: fsl: Add Engicam i.Core MX8M Plus EDIMM2.2 Starter Kit
i.Core MX8M Plus is an EDIMM SoM based on NXP i.MX8M Plus from Engicam.

EDIMM2.2 Starter Kit is an EDIMM 2.2 Form Factor Capacitive Evaluation
Board from Engicam.

i.Core MX8M Plus needs to mount on top of this Evaluation board for
creating complete i.Core MX8M Plus EDIMM2.2 Starter Kit.

Add bindings for it.

Signed-off-by: Manoj Sai <abbaraju.manojsai@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 09:24:42 +08:00
Changming Huang
cff15d3ee6 dt-bindings: arm: fsl: add ls1021a-iot board
Add the board ls1021a-iot in the binding docuemnt.

Signed-off-by: Changming Huang <jerry.huang@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 09:24:42 +08:00
Marek Vasut
1299bb1d2e dt-bindings: arm: Add i.MX8M Mini Toradex Verdin based Menlo board
Add DT compatible string for board based on the Toradex Verdin iMX8M
Mini SoM, the MX8Menlo. The board is a compatible replacement for
i.MX53 M53Menlo and features USB, multiple UARTs, ethernet, LEDs,
SD and eMMC.

Acked-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Francesco Dolcini <francesco.dolcini@toradex.com>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: devicetree@vger.kernel.org
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-05-05 09:24:42 +08:00