Commit graph

932,869 commits

Author SHA1 Message Date
Kees Cook
80fcc98711 doc: security: Add kern-doc for lsm_hooks.h
There is a lot of kern-doc for the LSM internals, but it wasn't visible
in the HTML output. This exposes some formatting flaws in lsm_hooks.h
that will be fixed in a later series of patches.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-02-22 08:54:09 -07:00
Kees Cook
d61330c689 doc: sctp: Merge and clean up rst files
The SCTP sections were ending up at the top-level table of contents
under the security section when they should have be sections with the
SCTP chapters. In addition to correcting the section and subsection
headings, this merges the SCTP documents into a single file to organize
the chapters more clearly, internally linkifies them, and adds the
missing SPDX header.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-02-22 08:51:40 -07:00
George Sofianos
3203561d6d Docs: Correct /proc/stat path
The documentation for dynamic ticks in high resolution timers uses an
incorrect path for /proc/stat - fix it.

Signed-off-by: George Sofianos <gsf.greece@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-02-22 08:50:17 -07:00
Aurélien Cedeyn
a5f4cb4288 scripts/spdxcheck.py: fix C++ comment style detection
With the last commit to support the SuperH boot code files, we have the
following regression:

$ ./scripts/checkpatch.pl -f <(echo '/* SPDX-License-Identifier: MIT */')
WARNING: 'SPDX-License-Identifier: MIT */' is not supported in LICENSES/..
+/* SPDX-License-Identifier: MIT */

total: 0 errors, 1 warnings, 1 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
mechanically convert to the typical style using --fix or --fix-inplace.

/dev/fd/63 has style problems, please review.

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.

This is not obvious, but spdxcheck.py is launched in checkpatch.pl with :
    ...
    } elsif ($rawline =~ /(SPDX-License-Identifier: .*)/) {
        my $spdx_license = $1;
        if (!is_SPDX_License_valid($spdx_license)) {
            WARN("SPDX_LICENSE_TAG",
                 "'$spdx_license' is not supported in LICENSES/...\n" . \
                 $herecurr);
        }
    ...
    sub is_SPDX_License_valid {
        my ($license) = @_;
        ...
        my $status = `cd "$root_path"; echo "$license" |
                      python scripts/spdxcheck.py -`;
        ...
    }

The first chars before 'SPDX-License-Identifier:' are ignored.
This commit fixes this regression.

Fixes:959b49687838 (scripts/spdxcheck.py: Handle special quotation mark comments)
Signed-off-by:Aurélien Cedeyn <aurelien.cedeyn@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-02-22 08:47:05 -07:00
Federico Vaga
61ab9fecaf doc: fix typos in license-rules.rst
The patches fixes some typos in process/license-rules.rst

Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-02-22 08:38:15 -07:00
Randy Dunlap
f07fb1088f Documentation: fix admin-guide/README.rst minimum gcc version requirement
Fix minimum gcc version as specified in Documentation/process/changes.rst.

Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-02-22 08:36:16 -07:00
Federico Vaga
1c7f86cbce doc: process: complete removal of info about -git patches
The following patch forgot to remove a reference to the -git
patches

commit 2c71d305ca ("docs: process: Remove outdated info about -git patches")

This patch complete the removal and update all translations

Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
Acked-by: SeongJae Park <sj38.park@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-02-22 08:35:27 -07:00
Federico Vaga
a10c29cd8b doc: translations: sync translations 'remove info about -git patches'
Synchonise translations: CN, IT, JP, KR

commit 2c71d305ca ("docs: process: Remove outdated info about -git patches")

I can guarantee for the Italian translations, but since we are removing
an entire chapter I think I did it right also for the other languages.

Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
Acked-by: SeongJae Park <sj38.park@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-02-22 08:35:04 -07:00
Toke Høiland-Jørgensen
915654fd71 samples/bpf: Fix dummy program unloading for xdp_redirect samples
The xdp_redirect and xdp_redirect_map sample programs both load a dummy
program onto the egress interfaces. However, the unload code checks these
programs against the wrong id number, and thus refuses to unload them. Fix
the comparison to avoid this.

Fixes: 3b7a8ec2de ("samples/bpf: Check the prog id before exiting")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-22 16:21:59 +01:00
Wei Yongjun
daad4d2a0a
spi: sifive: Remove redundant dev_err call in sifive_spi_probe()
There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:17:58 +00:00
Alban Crequy
7c0cdf0b39 bpf, lpm: fix lookup bug in map_delete_elem
trie_delete_elem() was deleting an entry even though it was not matching
if the prefixlen was correct. This patch adds a check on matchlen.

Reproducer:

$ sudo bpftool map create /sys/fs/bpf/mylpm type lpm_trie key 8 value 1 entries 128 name mylpm flags 1
$ sudo bpftool map update pinned /sys/fs/bpf/mylpm key hex 10 00 00 00 aa bb cc dd value hex 01
$ sudo bpftool map dump pinned /sys/fs/bpf/mylpm
key: 10 00 00 00 aa bb cc dd  value: 01
Found 1 element
$ sudo bpftool map delete pinned /sys/fs/bpf/mylpm key hex 10 00 00 00 ff ff ff ff
$ echo $?
0
$ sudo bpftool map dump pinned /sys/fs/bpf/mylpm
Found 0 elements

A similar reproducer is added in the selftests.

Without the patch:

$ sudo ./tools/testing/selftests/bpf/test_lpm_map
test_lpm_map: test_lpm_map.c:485: test_lpm_delete: Assertion `bpf_map_delete_elem(map_fd, key) == -1 && errno == ENOENT' failed.
Aborted

With the patch: test_lpm_map runs without errors.

Fixes: e454cf5958 ("bpf: Implement map_delete_elem for BPF_MAP_TYPE_LPM_TRIE")
Cc: Craig Gallek <kraig@google.com>
Signed-off-by: Alban Crequy <alban@kinvolk.io>
Acked-by: Craig Gallek <kraig@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-22 16:17:53 +01:00
Wei Yongjun
049e5feae1
spi: sifive: Remove spi_master_put in sifive_spi_remove()
The call to spi_master_put() in sifive_spi_remove() is redundant since
the master is registered using devm_spi_register_master() and no
reference hold by using spi_master_get() in sifive_spi_remove().

This is detected by Coccinelle semantic patch.

Fixes: 484a9a68d6 ("spi: sifive: Add driver for the SiFive SPI controller")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:17:43 +00:00
Gustavo A. R. Silva
ac227fb5bc
regulator: da9063: Use struct_size() in devm_kzalloc()
One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:

struct foo {
    int stuff;
    struct boo entry[];
};

size = sizeof(struct foo) + count * sizeof(struct boo);
instance = alloc(size, GFP_KERNEL)

Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:

instance = alloc(struct_size(instance, entry, count), GFP_KERNEL)

Notice that, in this case, variable size is not necessary, hence it is
removed.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:16:57 +00:00
Axel Lin
a661b1d993
regulator: mt6311: Use linear instead of linear range for mt6311_buck_ops
Current code already set .min_uV and .uV_step fields and it actually can
use regulator_list_voltage_linear.
So remove buck_volt_range and use regulator_list_voltage_linear instead.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:16:42 +00:00
Axel Lin
d3d1a6a72b
regulator: max77650: Fix set_current_limit implementation
Current code always return error, fix it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:16:33 +00:00
Christian Hohnstaedt
e5c8ba0635
regulator: tps65218: Add support for LS2
Re-use the "tps65218_pmic_*_current_limit()" functions of LS3
and calculate the different required bit-shift by counting the
trailing 0s in "struct regulator_desc.csel_mask"

Signed-off-by: Christian Hohnstaedt <Christian.Hohnstaedt@wago.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:16:18 +00:00
Charles Keepax
0d3fba3e7a
ASoC: wm_adsp: Improve logging messages
As the compressed stream implementation has acquired support for
multiple DAI links and compressed streams it has become harder to
interpret messages in the kernel log. Add additional macros to include
the compressed DAI name in the log messages, allowing different streams
to be easily disambiguated.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:14:12 +00:00
Stuart Henderson
4f2d4eabf5
ASoC: wm_adsp: Add support for multiple compressed buffers
Currently, only a single compressed stream is supported per firmware.
Add support for multiple compressed streams on a single firmware, this
allows additional features like completely independent trigger words or
separate debug capture streams to be implemented.

Signed-off-by: Stuart Henderson <stuarth@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:13:57 +00:00
Charles Keepax
a792af69b0
ASoC: wm_adsp: Refactor compress stream initialisation
Make the code slightly clearer and prepare things for the addition of
multiple compressed streams on a single DSP core.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:13:44 +00:00
Charles Keepax
1e38f069c7
ASoC: wm_adsp: Reorder some functions for improved clarity
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:13:30 +00:00
Charles Keepax
cc7d6ce902
ASoC: wm_adsp: Factor out stripping padding from ADSP data
In preparation for more refactoring add a helper function to strip the
padding from ADSP data.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:13:17 +00:00
Dan Carpenter
eb23dcd20e
ASoC: cs35l36: Fix an IS_ERR() vs NULL checking bug
The irq_get_irq_data() function doesn't return error pointers, it
returns NULL.

Fixes: 6ba9dd6c89 ("ASoC: cs35l36: Add support for Cirrus CS35L36 Amplifier")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-22 15:13:03 +00:00
Adrian Hunter
1f35cd6538 perf thread-stack: Improve thread_stack__no_call_return()
Improve thread_stack__no_call_return() to better handle 'returns' that
do not match the stack i.e. 'no call'. See code comments for details.
The example below shows how retpolines are affected:

Example:

  $ cat simple-retpoline.c
  __attribute__((noinline)) int bar(void)
  {
          return -1;
  }

  int foo(void)
  {
          return bar() + 1;
  }

  __attribute__((indirect_branch("thunk"))) int main()
  {
          int (*volatile fn)(void) = foo;

          fn();
          return fn();
  }
  $ gcc -ggdb3 -Wall -Wextra -O2 -o simple-retpoline simple-retpoline.c
  $ objdump -d simple-retpoline
  <SNIP>
  0000000000001040 <main>:
      1040:       48 83 ec 18             sub    $0x18,%rsp
      1044:       48 8d 05 25 01 00 00    lea    0x125(%rip),%rax        # 1170 <foo>
      104b:       48 89 44 24 08          mov    %rax,0x8(%rsp)
      1050:       48 8b 44 24 08          mov    0x8(%rsp),%rax
      1055:       e8 1f 01 00 00          callq  1179 <__x86_indirect_thunk_rax>
      105a:       48 8b 44 24 08          mov    0x8(%rsp),%rax
      105f:       48 83 c4 18             add    $0x18,%rsp
      1063:       e9 11 01 00 00          jmpq   1179 <__x86_indirect_thunk_rax>
  <SNIP>
  0000000000001160 <bar>:
      1160:       b8 ff ff ff ff          mov    $0xffffffff,%eax
      1165:       c3                      retq
  <SNIP>
  0000000000001170 <foo>:
      1170:       e8 eb ff ff ff          callq  1160 <bar>
      1175:       83 c0 01                add    $0x1,%eax
      1178:       c3                      retq
  0000000000001179 <__x86_indirect_thunk_rax>:
      1179:       e8 07 00 00 00          callq  1185 <__x86_indirect_thunk_rax+0xc>
      117e:       f3 90                   pause
      1180:       0f ae e8                lfence
      1183:       eb f9                   jmp    117e <__x86_indirect_thunk_rax+0x5>
      1185:       48 89 04 24             mov    %rax,(%rsp)
      1189:       c3                      retq
  <SNIP>
  $ perf record -o simple-retpoline.perf.data -e intel_pt/cyc/u ./simple-retpoline
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0,017 MB simple-retpoline.perf.data ]
  $ perf script -i simple-retpoline.perf.data --itrace=be -s ~/libexec/perf-core/scripts/python/export-to-sqlite.py simple-retpoline.db branches calls
  2019-01-08 14:03:37.851655 Creating database...
  2019-01-08 14:03:37.863256 Writing records...
  2019-01-08 14:03:38.069750 Adding indexes
  2019-01-08 14:03:38.078799 Done
  $ ~/libexec/perf-core/scripts/python/exported-sql-viewer.py simple-retpoline.db

Before:

    main
        -> __x86_indirect_thunk_rax
            -> __x86_indirect_thunk_rax
                -> __x86_indirect_thunk_rax
                    -> bar

After:

    main
        -> __x86_indirect_thunk_rax
            -> __x86_indirect_thunk_rax
                -> foo
                    -> bar

Committer testing:

Chose "Reports", Then "Context-Sensitive Call Graph" and then go on
expanding:

Before:

simple-retpolin
   PID:PID
      _start
         _start
            __libc_start_main
               main
                   __x86_indirect_thunk_rax
                      __x86_indirect_thunk_rax
                      bar

After:

Remove the "simple.retpoline.db" file, run again the 'perf script' line
to regenerate the .db file and run the exported-sql-viewer.py again to
get the same all the way to 'main', then, from there, including 'main':

               main
                   __x86_indirect_thunk_rax
                       __x86_indirect_thunk_rax
                           foo
                               bar

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20190109091835.5570-6-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-22 11:42:34 -03:00
Arnd Bergmann
203a0d4172 mvebu dt for 5.1 (part 2)
Follow-up fixing DT warning introduced by previous pull request
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Merge tag 'mvebu-dt-5.1-2' of git://git.infradead.org/linux-mvebu into arm/dt

mvebu dt for 5.1 (part 2)

Follow-up fixing DT warning introduced by previous pull request

* tag 'mvebu-dt-5.1-2' of git://git.infradead.org/linux-mvebu:
  arch: arm: dts: kirkwood-rd88f6281: Remove disabled marvell,dsa reference

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-22 14:58:59 +01:00
Arnd Bergmann
2f8b1ce19e mvebu fixes for 5.0 (part 2)
Fix PHY reset signal on clearfog gt 8K (Armada 8040 based)
 Fix NAND description on Armada XP boards which was broken since a few
 release
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Merge tag 'mvebu-fixes-5.0-2' of git://git.infradead.org/linux-mvebu into arm/fixes

mvebu fixes for 5.0 (part 2)

Fix PHY reset signal on clearfog gt 8K (Armada 8040 based)
Fix NAND description on Armada XP boards which was broken since a few
release

* tag 'mvebu-fixes-5.0-2' of git://git.infradead.org/linux-mvebu:
  arm64: dts: clearfog-gt-8k: fix SGMII PHY reset signal
  ARM: dts: armada-xp: fix Armada XP boards NAND description

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-22 14:58:41 +01:00
Arnd Bergmann
847aed392f Device tree changes to make CPSW Ethernet use proper phy driver
We now have a proper PHY driver with drivers/phy/ti/phy-gmii-sel.c to
 configure the CPSW PHY. These changes update all CPSW users to use the
 new driver that already got merged during v5.0 merge window.
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Merge tag 'omap-for-v5.1/dt-cpsw-phy' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/dt

Device tree changes to make CPSW Ethernet use proper phy driver

We now have a proper PHY driver with drivers/phy/ti/phy-gmii-sel.c to
configure the CPSW PHY. These changes update all CPSW users to use the
new driver that already got merged during v5.0 merge window.

* tag 'omap-for-v5.1/dt-cpsw-phy' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  dt-bindings: net: ti: deprecate cpsw-phy-sel bindings
  ARM: dts: am335x: switch to use phy-gmii-sel
  ARM: dts: am4372: switch to use phy-gmii-sel
  ARM: dts: dm814x: switch to use phy-gmii-sel
  ARM: dts: dra7: switch to use phy-gmii-sel

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-22 14:55:16 +01:00
Arnd Bergmann
3858bfca2b Two am335x ethernet phy mode fixes for v5.0-rc cycle
Recent changes with commit cd28d1d6e5: ("net: phy: at803x: Disable phy
 delay for RGMII mode") broke Ethernet on am335x-evmsk, and turns out some
 device driver fixes are needed.
 
 Even without the driver fixes, am335x needs to run in rgmii-id mode instead
 rgmii-txid mode. Things have been working based on luck as the broken driver
 has been configuring rgmii-id mode. Let's fix that as that way things work
 as they're supposed to work from hardware wiring point of view.
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Merge tag 'omap-for-v5.0/fixes-rc7-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes

Two am335x ethernet phy mode fixes for v5.0-rc cycle

Recent changes with commit cd28d1d6e5: ("net: phy: at803x: Disable phy
delay for RGMII mode") broke Ethernet on am335x-evmsk, and turns out some
device driver fixes are needed.

Even without the driver fixes, am335x needs to run in rgmii-id mode instead
rgmii-txid mode. Things have been working based on luck as the broken driver
has been configuring rgmii-id mode. Let's fix that as that way things work
as they're supposed to work from hardware wiring point of view.

* tag 'omap-for-v5.0/fixes-rc7-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: am335x-evm: Fix PHY mode for ethernet
  ARM: dts: am335x-evmsk: Fix PHY mode for ethernet

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-22 14:54:02 +01:00
Corey Minyard
90b2d4f15f ipmi_si: Remove hacks for adding a dummy platform devices
All the IPMI address sources now supply a real device.  This cheap
hack is no longer necessary.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-02-22 07:12:41 -06:00
Corey Minyard
e17c657100 ipmi_si: Consolidate scanning the platform bus
The same basic code was in two places.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-02-22 07:12:41 -06:00
Corey Minyard
bdb57b7bc1 ipmi_si: Remove hotmod devices on removal and exit
When a hotmod-added device is removed or when the module is removed,
remove the platform devices that was created for it.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-02-22 07:12:41 -06:00
Corey Minyard
1a84df2df8 ipmi_si: Remove hardcode IPMI devices by scanning the platform bus
Instead of keeping track of each one, just scan the platform bus
for hardcode devices and remove them.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-02-22 07:12:41 -06:00
Corey Minyard
3bb8ea400c ipmi_si: Switch hotmod to use a platform device
Don't force the main code to create one for it.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-02-22 07:12:41 -06:00
Corey Minyard
3cd83bac48 ipmi: Consolidate the adding of platform devices
It was being done in two different places now that hard-coded devices
use platform devices, and it's about to be three with hotmod switching
to platform devices.  So put the code in one place.

This required some rework on some interfaces to make the type space
clean.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-02-22 07:12:41 -06:00
Corey Minyard
f6296bdc49 ipmi_si: Rename addr_type to addr_space to match what it does
Make the naming consistent, and make the values an enum.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-02-22 07:12:41 -06:00
Corey Minyard
f25eb44832 ipmi_si: Convert some types into unsigned
Things dealing with registers and addresses are all unsigned, make
them so.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-02-22 07:12:41 -06:00
Corey Minyard
41b766d661 ipmi_si: Fix crash when using hard-coded device
When excuting a command like:
  modprobe ipmi_si ports=0xffc0e3 type=bt
The system would get an oops.

The trouble here is that ipmi_si_hardcode_find_bmc() is called before
ipmi_si_platform_init(), but initialization of the hard-coded device
creates an IPMI platform device, which won't be initialized yet.

The real trouble is that hard-coded devices aren't created with
any device, and the fixup is done later.  So do it right, create the
hard-coded devices as normal platform devices.

This required adding some new resource types to the IPMI platform
code for passing information required by the hard-coded device
and adding some code to remove the hard-coded platform devices
on module removal.

To enforce the "hard-coded devices passed by the user take priority
over firmware devices" rule, some special code was added to check
and see if a hard-coded device already exists.

Reported-by: Yang Yingliang <yangyingliang@huawei.com>
Cc: stable@vger.kernel.org # v4.15+
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Yang Yingliang <yangyingliang@huawei.com>
2019-02-22 07:12:41 -06:00
Felix Fietkau
51d0af222f mac80211: allocate tailroom for forwarded mesh packets
Forwarded packets enter the tx path through ieee80211_add_pending_skb,
which skips the ieee80211_skb_resize call.
Fixes WARN_ON in ccmp_encrypt_skb and resulting packet loss.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 14:00:40 +01:00
Herbert Xu
6c4128f658 rhashtable: Remove obsolete rhashtable_walk_init function
The rhashtable_walk_init function has been obsolete for more than
two years.  This patch finally converts its last users over to
rhashtable_walk_enter and removes it.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:49:00 +01:00
Herbert Xu
3692293163 mac80211: Use rhashtable_lookup_get_insert_fast instead of racy code
The code in mesh_path_add tries to handle the case where a duplicate
entry is added to the rhashtable by doing a lookup after a failed
insertion.  It also tries to handle races by repeating the insertion
should the lookup fail.

This is now unnecessary as we have rhashtable API functions that can
directly return the mathcing object.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:48:48 +01:00
Johannes Berg
b7b14ec1eb Merge remote-tracking branch 'net-next/master' into mac80211-next
Merge net-next to resolve a conflict and to get the mac80211
rhashtable fixes so further patches can be applied on top.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:48:13 +01:00
Liad Kaufman
77ff2c6b49 mac80211: update HE IEs to D3.3
Update element names and new fields according to D3.3 of
the HE spec.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:46:55 +01:00
Johannes Berg
55c1fdf0d6 cfg80211: allow sending vendor events unicast
Sometimes, we may want to transport higher bandwidth data
through vendor events, and in that case sending it multicast
is a bad idea. Allow vendor events to be unicast.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:46:43 +01:00
Sara Sharon
7976b1e9e3 mac80211: ignore quiet mode in probe
Some buggy APs keep the CSA IE in probes after the channel
switch was completed and can silence us for no good reason.
Apply quiet mode only from beacons. If there is real channel
switch going on, we will see the beacon anyway.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:46:25 +01:00
Sara Sharon
9792875ccd mac80211: allow CSA to self with immediate quiet
Currently, due to some buggy APs that continue to include
CSA IEs after the switch, we ignore CSA to same channel.
However, some other APs may do CSA to self in order to have
immediate quiet. Allow it. Do it only for beacons.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:46:04 +01:00
Sara Sharon
fafd2bce5a mac80211: notify driver on subsequent CSA beacons
Some drivers may want to track further the CSA beacons, for example
to compensate for buggy APs that change the beacon count or quiet
mode during CSA flow.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:45:51 +01:00
Liad Kaufman
c15353be91 mac80211: fix position of vendor_data read
The ieee80211_vendor_radiotap was read from the beginning
of the skb->data regardless of the existence of other
elements in radiotap that would cause it to move to another
position. Fix this by taking into account where it really
should be.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:45:38 +01:00
Johannes Berg
2ff5e52e78 radiotap: add 0-length PSDU "not captured" type
This type was defined in radiotap but we didn't add it to the
header file, add it now.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:45:32 +01:00
Sara Sharon
b9cc81d827 mac80211: abort CSA if beacon does not include CSA IEs
In case we receive a beacon without CSA IE while we are in
the middle of channel switch - abort the operation.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:43:53 +01:00
Sara Sharon
ee145775c1 mac80211: support max channel switch time element
2018 REVmd of the spec introduces the max channel switch time
element which is optionally included in beacons/probes when there
is a channel switch / extended channel switch element.
The value represents the maximum delay between the time the AP
transmitted the last beacon in current channel and the expected
time of the first beacon in the new channel, in TU.

Parse the value and pass it to the driver.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:42:54 +01:00
Jouni Malinen
4d9ec73d2b cfg80211: Report Association Request frame IEs in association events
This extends the NL80211_CMD_ASSOCIATE event case to report
NL80211_ATTR_REQ_IE similarly to what is already done with the
NL80211_CMD_CONNECT events if the driver provides this information. In
practice, this adds (Re)Association Request frame information element
reporting to mac80211 drivers for the cases where user space SME is
used.

This provides more information for user space to figure out which
capabilities were negotiated for the association. For example, this can
be used to determine whether HT, VHT, or HE is used.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:35:09 +01:00