Commit Graph

948892 Commits

Author SHA1 Message Date
Paolo Bonzini
5efac0741c KVM: x86: introduce kvm_mmu_invalidate_gva
Wrap the combination of mmu->invlpg and kvm_x86_ops->tlb_flush_gva
into a new function.  This function also lets us specify the host PGD to
invalidate and also the MMU, both of which will be useful in fixing and
simplifying kvm_inject_emulated_page_fault.

A nested guest's MMU however has g_context->invlpg == NULL.  Instead of
setting it to nonpaging_invlpg, make kvm_mmu_invalidate_gva the only
entry point to mmu->invlpg and make a NULL invlpg pointer equivalent
to nonpaging_invlpg, saving a retpoline.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-04-20 17:25:55 -04:00
Hu Haowen
6533380dfd net/mlx5: improve some comments
Replaced "its" with "it's".

Signed-off-by: Hu Haowen <xianfengting221@163.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-04-20 14:20:21 -07:00
Parav Pandit
c89da067a2 net/mlx5: Read embedded cpu bit only once
Embedded CPU bit doesn't change with PCI resume/suspend.
Hence read it only once while probing the PCI device.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Bodong Wang <bodong@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-04-20 14:20:21 -07:00
Maxim Mikityanskiy
fa3748775b net/mlx5e: Handle errors from netif_set_real_num_{tx,rx}_queues
netif_set_real_num_tx_queues and netif_set_real_num_rx_queues may fail.
Now that mlx5e supports handling errors in the preactivate hook, this
commit leverages that functionality to handle errors from those
functions and roll back all changes on failure.

Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-04-20 14:20:20 -07:00
Roi Dayan
d7a42ad062 net/mlx5e: Allow partial data mask for tunnel options
We use mapping to save and restore the tunnel options.
Save also the tunnel options mask.

Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-04-20 14:20:20 -07:00
Tariq Toukan
82fe299641 net/mlx5e: Set of completion request bit should not clear other adjacent bits
In notify HW (ring doorbell) flow, we set the bit to request a completion
on the TX descriptor.
When doing so, we should not unset other bits in the same byte.
Currently, this does not fix a real issue, as we still don't have a flow
where both MLX5_WQE_CTRL_CQ_UPDATE and any adjacent bit are set together.

Fixes: 542578c679 ("net/mlx5e: Move helper functions to a new txrx datapath header")
Fixes: 864b2d7153 ("net/mlx5e: Generalize tx helper functions for different SQ types")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-04-20 14:20:20 -07:00
Raed Salem
7dfee4b1d7 net/mlx5: IPsec, Refactor SA handle creation and destruction
Currently the SA handle is created and managed as part of the common
code for different IPsec supporting HW, this handle is passed to HW
to be used on Rx to identify the SA handle that was used to
return the xfrm state to stack.

The above implementation pose a limitation on managing this handle.

Refactor by moving management of this field to the specific HW code.

Downstream patches will introduce the Connect-X support for IPsec that
will use this handle differently than current implementation.

Signed-off-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Reviewed-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-04-20 14:20:20 -07:00
Raed Salem
0aab3e1b04 net/mlx5e: IPSec, Expose IPsec HW stat only for supporting HW
The current HW counters are supported only by Innova, split the ipsec
stats group into two groups, one for HW and one for SW. And expose
the HW counters to ethtool only if Innova HW is used for IPsec offload.

Signed-off-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-04-20 14:20:19 -07:00
Raed Salem
1dbd51d0a7 net/mlx5: Refactor mlx5_accel_esp_create_hw_context parameter list
Currently the FPGA IPsec is the only hw implementation of the IPsec
acceleration api, and so the mlx5_accel_esp_create_hw_context was
wrongly made to suit this HW api, among other in its parameter list
and some of its parameter endianness.

This implementation might not be suitable for different HW.

Refactor by group and pass all function arguments of
mlx5_accel_esp_create_hw_context in common mlx5_accel_esp_xfrm_attrs
struct field of mlx5_accel_esp_xfrm struct and correct the endianness
according to the HW being called.

Signed-off-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Reviewed-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-04-20 14:20:19 -07:00
Raed Salem
9425c595bd net/mlx5e: en_accel, Add missing net/geneve.h include
The cited commit relies on include <net/geneve.h> being included
implicitly prior to include "en_accel/en_accel.h".
This mandates that all files that needs to include en_accel.h
to redantantly include net/geneve.h.

Include net/geneve.h explicitly at "en_accel/en_accel.h" to avoid
undesired constrain as above.

Fixes: e3cfc7e6b7 ("net/mlx5e: TX, Add geneve tunnel stateless offload support")
Signed-off-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-04-20 14:20:19 -07:00
Raed Salem
8c8eea07c1 net/mlx5: Use the correct IPsec capability function for FPGA ops
Currently the IPsec acceleration capability function is also used
at IPsec fpga capable device code.

This could cause a future bug as the acceleration layer is agnostic
to the device implementing its API.

Fix by using the IPsec FPGA capability function instead of acceleration
layer capability function in case of FPGA IPsec only related operations.

Downstream patches will add support for Connect-X IPsec, this can avoid
a future bug.

Signed-off-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Reviewed-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-04-20 14:20:19 -07:00
Mauro Carvalho Chehab
2f9c502552 scripts: sphinx-pre-install: add support for python -m venv
Since python 3.3, the recommended way to setup a virtual env is
via "python -m venv".

Set this as a default, if python version is compatible with
such feature.

While here, add more comments to it, as the script is
getting more complex. So, better to add more things, to avoid
accidentally breaking it while improving it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/252cc849c79527ad496247e4c481961478adf41c.1586883286.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-04-20 15:19:13 -06:00
Mauro Carvalho Chehab
d6ebf1890c scripts: sphinx-pre-install: add support for OpenMandriva
It seems that Mageia and OpenMandriva will reunite on a single
distribution. In any case, both came from Mandriva. So, it is
close enough to use the same logic.

So, add support for it.

Tested with OpenMandriva 4.1 and with Mageia 7.1.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/692809729c6818a0b0f75513da15970c53d5565c.1586883286.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-04-20 15:19:13 -06:00
Mauro Carvalho Chehab
e45a631742 scripts: sphinx-pre-install: address some issues with Gentoo
There are some small misdetections with Gentoo. While they
don't cause too much trouble, it keeps recomending to
install things that are already there.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/7f631edce102b02ccbdbfb18be1376a86b41373d.1586883286.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-04-20 15:19:13 -06:00
Mauro Carvalho Chehab
bfc7f42810 scripts: sphinx-pre-install: fix a dependency hint with Ubuntu 16.04
Avoid the scripts to keep asking to install fonts-noto-cjk
on Ubuntu 16.04.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/912b664a8ca54e8c5c5767c3fe9171973eeddd6b.1586883286.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-04-20 15:19:12 -06:00
Mauro Carvalho Chehab
b3df6223bd scripts: sphinx-pre-install: improve openSuse Tumbleweed check
Currently, with openSUSE Tumbleweed 20200303, it keeps
recommending this forever:

	sudo zypper install --no-recommends rsvg-view

This dependency will never be fulfilled there, as the package
now is named as on other distros: rsvg-convert.

So, improve the detection to avoid such issue.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/c3774f72ac36c5e5b5f446ae5db5b795d1f274f4.1586883286.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-04-20 15:19:12 -06:00
Mauro Carvalho Chehab
d14d0c1aea scripts: sphinx-pre-install: improve distro detection check
The Arch-linux detection is hit by catting /etc/issue, whose
contents is (nowadays):

	Arch Linux \r (\l)

It sounds a little ackward to print such string, so,
instead, let's use the /etc/os-release file, with exists
on lots of distributions and should provide a more reliable
result.

We'll keep the old tests before it, in order to avoid possible
regressions with the other distros, although the new way should
probably work on all the currently supported distributions.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/472924557afdf2b5492ae2a48c5ecfae216d54e2.1586883286.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-04-20 15:19:12 -06:00
Josh Poimboeuf
7f4b5cde24 kvm: Disable objtool frame pointer checking for vmenter.S
Frame pointers are completely broken by vmenter.S because it clobbers
RBP:

  arch/x86/kvm/svm/vmenter.o: warning: objtool: __svm_vcpu_run()+0xe4: BP used as a scratch register

That's unavoidable, so just skip checking that file when frame pointers
are configured in.

On the other hand, ORC can handle that code just fine, so leave objtool
enabled in the !FRAME_POINTER case.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Message-Id: <01fae42917bacad18be8d2cbc771353da6603473.1587398610.git.jpoimboe@redhat.com>
Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Fixes: 199cd1d7b5 ("KVM: SVM: Split svm_vcpu_run inline assembly to separate file")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-04-20 17:11:19 -04:00
Paul Moore
763dafc520 audit: check the length of userspace generated audit records
Commit 7561252892 ("audit: always check the netlink payload length
in audit_receive_msg()") fixed a number of missing message length
checks, but forgot to check the length of userspace generated audit
records.  The good news is that you need CAP_AUDIT_WRITE to submit
userspace audit records, which is generally only given to trusted
processes, so the impact should be limited.

Cc: stable@vger.kernel.org
Fixes: 7561252892 ("audit: always check the netlink payload length in audit_receive_msg()")
Reported-by: syzbot+49e69b4d71a420ceda3e@syzkaller.appspotmail.com
Signed-off-by: Paul Moore <paul@paul-moore.com>
2020-04-20 17:10:58 -04:00
Jarkko Sakkinen
b160c94be5 tpm/tpm_tis: Free IRQ if probing fails
Call disable_interrupts() if we have to revert to polling in order not to
unnecessarily reserve the IRQ for the life-cycle of the driver.

Cc: stable@vger.kernel.org # 4.5.x
Reported-by: Hans de Goede <hdegoede@redhat.com>
Fixes: e3837e74a0 ("tpm_tis: Refactor the interrupt setup")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2020-04-21 00:06:13 +03:00
Tianjia Zhang
29cb79795e tpm: fix wrong return value in tpm_pcr_extend
For the algorithm that does not match the bank, a positive
value EINVAL is returned here. I think this is a typo error.
It is necessary to return an error value.

Cc: stable@vger.kernel.org # 5.4.x
Fixes: 9f75c82246 ("KEYS: trusted: correctly initialize digests and fix locking issue")
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Reviewed-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2020-04-21 00:06:13 +03:00
George Wilson
eba5cf3dcb tpm: ibmvtpm: retry on H_CLOSED in tpm_ibmvtpm_send()
tpm_ibmvtpm_send() can fail during PowerVM Live Partition Mobility resume
with an H_CLOSED return from ibmvtpm_send_crq().  The PAPR says, 'The
"partner partition suspended" transport event disables the associated CRQ
such that any H_SEND_CRQ hcall() to the associated CRQ returns H_Closed
until the CRQ has been explicitly enabled using the H_ENABLE_CRQ hcall.'
This patch adds a check in tpm_ibmvtpm_send() for an H_CLOSED return from
ibmvtpm_send_crq() and in that case calls tpm_ibmvtpm_resume() and
retries the ibmvtpm_send_crq() once.

Cc: stable@vger.kernel.org # 3.7.x
Fixes: 132f762947 ("drivers/char/tpm: Add new device driver to support IBM vTPM")
Reported-by: Linh Pham <phaml@us.ibm.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: George Wilson <gcwilson@linux.ibm.com>
Tested-by: Linh Pham <phaml@us.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2020-04-21 00:06:13 +03:00
Stefan Berger
684c6bd806 tpm: Export tpm2_get_cc_attrs_tbl for ibmvtpm driver as module
This patch fixes the following problem when the ibmvtpm driver
is built as a module:

ERROR: modpost: "tpm2_get_cc_attrs_tbl" [drivers/char/tpm/tpm_ibmvtpm.ko] undefined!
make[1]: *** [scripts/Makefile.modpost:94: __modpost] Error 1
make: *** [Makefile:1298: modules] Error 2

Fixes: 18b3670d79 ("tpm: ibmvtpm: Add support for TPM2")
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reported-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
Tested-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2020-04-21 00:06:13 +03:00
Mauro Carvalho Chehab
e6940c03dd media: usbvision: depends on USB
When built with:
	CONFIG_USB=m
	CONFIG_VIDEO_USBVISION=y

It causes ld errors:

ld: drivers/staging/media/usbvision/usbvision-core.o: in function `usbvision_write_reg_irq':
usbvision-core.c:(.text+0x8a4): undefined reference to `usb_submit_urb'
ld: drivers/staging/media/usbvision/usbvision-core.o: in function `usbvision_isoc_irq':
usbvision-core.c:(.text+0x2ee8): undefined reference to `usb_submit_urb'
ld: drivers/staging/media/usbvision/usbvision-core.o: in function `usbvision_read_reg':
usbvision-core.c:(.text+0x30ad): undefined reference to `usb_control_msg'
ld: drivers/staging/media/usbvision/usbvision-core.o: in function `usbvision_write_reg':
usbvision-core.c:(.text+0x3178): undefined reference to `usb_control_msg'
ld: drivers/staging/media/usbvision/usbvision-core.o: in function `usbvision_set_output':
usbvision-core.c:(.text+0x344e): undefined reference to `usb_control_msg'
ld: drivers/staging/media/usbvision/usbvision-core.o: in function `usbvision_set_input':
usbvision-core.c:(.text+0x3b9b): undefined reference to `usb_control_msg'
ld: drivers/staging/media/usbvision/usbvision-core.o: in function `usbvision_setup':
usbvision-core.c:(.text+0x4009): undefined reference to `usb_control_msg'
ld: drivers/staging/media/usbvision/usbvision-core.o:usbvision-core.c:(.text+0x417f): more undefined references to `usb_control_msg' follow
ld: drivers/staging/media/usbvision/usbvision-core.o: in function `usbvision_set_alternate':
usbvision-core.c:(.text+0x4518): undefined reference to `usb_set_interface'
ld: drivers/staging/media/usbvision/usbvision-core.o: in function `usbvision_init_isoc':
usbvision-core.c:(.text+0x4673): undefined reference to `usb_alloc_urb'
ld: usbvision-core.c:(.text+0x46a5): undefined reference to `usb_alloc_coherent'
ld: usbvision-core.c:(.text+0x4765): undefined reference to `usb_submit_urb'
ld: drivers/staging/media/usbvision/usbvision-core.o: in function `usbvision_stop_isoc':
usbvision-core.c:(.text+0x4837): undefined reference to `usb_kill_urb'
ld: usbvision-core.c:(.text+0x485f): undefined reference to `usb_free_coherent'
ld: usbvision-core.c:(.text+0x4874): undefined reference to `usb_free_urb'
ld: usbvision-core.c:(.text+0x48f1): undefined reference to `usb_set_interface'
ld: drivers/staging/media/usbvision/usbvision-video.o: in function `usbvision_release':
usbvision-video.c:(.text+0x1a8a): undefined reference to `usb_free_urb'
ld: drivers/staging/media/usbvision/usbvision-video.o: in function `usbvision_disconnect':
usbvision-video.c:(.text+0x1b74): undefined reference to `usb_put_dev'
ld: drivers/staging/media/usbvision/usbvision-video.o: in function `usbvision_radio_close':
usbvision-video.c:(.text+0x1c89): undefined reference to `usb_set_interface'
ld: drivers/staging/media/usbvision/usbvision-video.o: in function `usbvision_probe':
usbvision-video.c:(.text+0x1e4b): undefined reference to `usb_get_dev'
ld: usbvision-video.c:(.text+0x20e1): undefined reference to `usb_alloc_urb'
ld: usbvision-video.c:(.text+0x2797): undefined reference to `usb_put_dev'
ld: drivers/staging/media/usbvision/usbvision-video.o: in function `usbvision_exit':
usbvision-video.c:(.exit.text+0x37): undefined reference to `usb_deregister'
ld: drivers/staging/media/usbvision/usbvision-video.o: in function `usbvision_init':
usbvision-video.c:(.init.text+0xf9): undefined reference to `usb_register_driver'
ld: drivers/staging/media/usbvision/usbvision-i2c.o: in function `usbvision_i2c_write':
usbvision-i2c.c:(.text+0x2f4): undefined reference to `usb_control_msg'

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-04-20 22:46:04 +02:00
Mauro Carvalho Chehab
e10daad5bb media: staging: rkisp1 Kconfig: depends on OF
building it with a random config causes a warning:

WARNING: unmet direct dependencies detected for PHY_ROCKCHIP_DPHY_RX0
  Depends on [n]: STAGING [=y] && STAGING_MEDIA [=y] && MEDIA_SUPPORT [=y] && (ARCH_ROCKCHIP || COMPILE_TEST [=y]) && OF [=n]
  Selected by [y]:
  - VIDEO_ROCKCHIP_ISP1 [=y] && STAGING [=y] && STAGING_MEDIA [=y] && MEDIA_SUPPORT [=y] && VIDEO_V4L2 [=y] && (ARCH_ROCKCHIP || COMPILE_TEST [=y])

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-04-20 22:45:49 +02:00
Taehee Yoo
1c30fbc76b team: fix hang in team_mode_get()
When team mode is changed or set, the team_mode_get() is called to check
whether the mode module is inserted or not. If the mode module is not
inserted, it calls the request_module().
In the request_module(), it creates a child process, which is
the "modprobe" process and waits for the done of the child process.
At this point, the following locks were used.
down_read(&cb_lock()); by genl_rcv()
    genl_lock(); by genl_rcv_msc()
        rtnl_lock(); by team_nl_cmd_options_set()
            mutex_lock(&team->lock); by team_nl_team_get()

Concurrently, the team module could be removed by rmmod or "modprobe -r"
The __exit function of team module is team_module_exit(), which calls
team_nl_fini() and it tries to acquire following locks.
down_write(&cb_lock);
    genl_lock();
Because of the genl_lock() and cb_lock, this process can't be finished
earlier than request_module() routine.

The problem secenario.
CPU0                                     CPU1
team_mode_get
    request_module()
                                         modprobe -r team_mode_roundrobin
                                                     team <--(B)
        modprobe team <--(A)
            team_mode_roundrobin

By request_module(), the "modprobe team_mode_roundrobin" command
will be executed. At this point, the modprobe process will decide
that the team module should be inserted before team_mode_roundrobin.
Because the team module is being removed.

By the module infrastructure, the same module insert/remove operations
can't be executed concurrently.
So, (A) waits for (B) but (B) also waits for (A) because of locks.
So that the hang occurs at this point.

Test commands:
    while :
    do
        teamd -d &
	killall teamd &
	modprobe -rv team_mode_roundrobin &
    done

The approach of this patch is to hold the reference count of the team
module if the team module is compiled as a module. If the reference count
of the team module is not zero while request_module() is being called,
the team module will not be removed at that moment.
So that the above scenario could not occur.

Fixes: 3d249d4ca7 ("net: introduce ethernet teaming device")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 13:03:44 -07:00
David S. Miller
0b943d9079 Merge branch 'mptcp-fix-races-on-accept'
Paolo Abeni says:

====================
mptcp: fix races on accept()

This series includes some fixes for accept() races which may cause inconsistent
MPTCP socket status and oops. Please see the individual patches for the
technical details.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:59:33 -07:00
Paolo Abeni
fca5c82c08 mptcp: drop req socket remote_key* fields
We don't need them, as we can use the current ingress opt
data instead. Setting them in syn_recv_sock() may causes
inconsistent mptcp socket status, as per previous commit.

Fixes: cc7972ea19 ("mptcp: parse and emit MP_CAPABLE option according to v1 spec")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:59:33 -07:00
Paolo Abeni
4c8941de78 mptcp: avoid flipping mp_capable field in syn_recv_sock()
If multiple CPUs races on the same req_sock in syn_recv_sock(),
flipping such field can cause inconsistent child socket status.

When racing, the CPU losing the req ownership may still change
the mptcp request socket mp_capable flag while the CPU owning
the request is cloning the socket, leaving the child socket with
'is_mptcp' set but no 'mp_capable' flag.

Such socket will stay with 'conn' field cleared, heading to oops
in later mptcp callback.

Address the issue tracking the fallback status in a local variable.

Fixes: 58b0991962 ("mptcp: create msk early")
Co-developed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:59:32 -07:00
Florian Westphal
5e20087d1b mptcp: handle mptcp listener destruction via rcu
Following splat can occur during self test:

 BUG: KASAN: use-after-free in subflow_data_ready+0x156/0x160
 Read of size 8 at addr ffff888100c35c28 by task mptcp_connect/4808

  subflow_data_ready+0x156/0x160
  tcp_child_process+0x6a3/0xb30
  tcp_v4_rcv+0x2231/0x3730
  ip_protocol_deliver_rcu+0x5c/0x860
  ip_local_deliver_finish+0x220/0x360
  ip_local_deliver+0x1c8/0x4e0
  ip_rcv_finish+0x1da/0x2f0
  ip_rcv+0xd0/0x3c0
  __netif_receive_skb_one_core+0xf5/0x160
  __netif_receive_skb+0x27/0x1c0
  process_backlog+0x21e/0x780
  net_rx_action+0x35f/0xe90
  do_softirq+0x4c/0x50
  [..]

This occurs when accessing subflow_ctx->conn.

Problem is that tcp_child_process() calls listen sockets'
sk_data_ready() notification, but it doesn't hold the listener
lock.  Another cpu calling close() on the listener will then cause
transition of refcount to 0.

Fixes: 58b0991962 ("mptcp: create msk early")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:59:32 -07:00
Rahul Lakkireddy
bd019427bf cxgb4: fix large delays in PTP synchronization
Fetching PTP sync information from mailbox is slow and can take
up to 10 milliseconds. Reduce this unnecessary delay by directly
reading the information from the corresponding registers.

Fixes: 9c33e4208b ("cxgb4: Add PTP Hardware Clock (PHC) support")
Signed-off-by: Manoj Malviya <manojmalviya@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:54:30 -07:00
Jason Yan
82ebc88909 qed: use true,false for bool variables
Fix the following coccicheck warning:

drivers/net/ethernet/qlogic/qed/qed_dev.c:4395:2-34: WARNING:
Assignment of 0/1 to bool variable
drivers/net/ethernet/qlogic/qed/qed_dev.c:1975:2-34: WARNING:
Assignment of 0/1 to bool variable

Signed-off-by: Jason Yan <yanaijie@huawei.com>
Acked-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:52:58 -07:00
Jason Yan
820f63652b firmware: qcom_scm: Remove unneeded conversion to bool
The '>' expression itself is bool, no need to convert it to bool again.
This fixes the following coccicheck warning:

drivers/firmware/qcom_scm.c:946:25-30: WARNING: conversion to bool not
needed here

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200420123516.7888-1-yanaijie@huawei.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2020-04-20 12:51:55 -07:00
David S. Miller
0fa1484e9c Merge branch 'hns3-next'
Huazhong Tan says:

====================
net: hns3: misc updates for -next

This patchset includes some misc updates for the HNS3 ethernet driver.

[patch 1&2] separates two bloated function.
[patch 3-5] removes some redundant code.
[patch 6-7] cleans up some coding style issues.
[patch 8-10] adds some debugging information.

Change log:
V1->V2:	removes an unnecessary initialization in [patch 1] which
	suggested by David Miller.
	modified some print format issue and commit log in [patch 8].
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:49:18 -07:00
Yufeng Mo
d8355240cf net: hns3: add trace event support for PF/VF mailbox
This patch adds trace event support for PF/VF mailbox.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:49:18 -07:00
Yufeng Mo
5cb51cfe8a net: hns3: add support for dumping MAC reg in debugfs
This patch adds support for dumping MAC reg in debugfs,
which will be helpful for debugging.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:49:18 -07:00
Guojia Liao
a3ca5e9048 net: hns3: add debug information for flow table when failed
Adds some debug information for failures of processing flow table,
removes the redundant printing when hclge_fd_check_spec() returns
error, and modifies the printing level for FD not enable error.

Signed-off-by: Guojia Liao <liaoguojia@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:49:18 -07:00
Huazhong Tan
0b4bdc55df net: hns3: clean up some coding style issue
This patch removes some unnecessary blank lines, redundant
parentheses, and changes one tab to blank in
hclge_dbg_dump_reg_common().

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:49:18 -07:00
Guojia Liao
84944d5c47 net: hns3: modify some unsuitable type declaration
In hclge_set_fd_key_config(), parameter 'stage' should be
as enum HCLGE_FD_STAGE, and in hclge_config_key(), 'tuple_size'
should be type u8, also simplify unsigned int with u32 for 'i'.

Signed-off-by: Guojia Liao <liaoguojia@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:49:18 -07:00
Guojia Liao
f84f6a8634 net: hns3: remove two unused structures in hclge_cmd.h
struct hclge_mac_vlan_remove_cmd and hclge_mac_vlan_add_cmd are unused.
So removes them from hclge_cmd.h.

Signed-off-by: Guojia Liao <liaoguojia@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:49:17 -07:00
Guojia Liao
16505f878e net: hns3: remove useless proto_support field in struct hclge_fd_cfg
proto_support field in struct hclge_fd_cfg shows what protocols
in flow direct table are supported now. It is unnecessary since
checking which one is unsupported will be more efficient,
so this patch removes it.

Signed-off-by: Guojia Liao <liaoguojia@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:49:17 -07:00
Huazhong Tan
e9368c4094 net: hns3: remove an unnecessary case 0 in hclge_fd_convert_tuple()
Since case default has included case 0, so removes this
redundant case 0.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:49:17 -07:00
Jian Shen
fa663c0960 net: hns3: split out hclge_get_fd_rule_info()
hclge_get_fd_rule_info() is bloated, this patch separates
it into several standalone functions for readability and
maintainability.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:49:17 -07:00
Jian Shen
736fc0e17f net: hns3: split out hclge_fd_check_ether_tuple()
For readability and maintainability, this patch separates the
handling part of each flow type in hclge_fd_check_ether_tuple()
into standalone functions.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:49:17 -07:00
Jonathan Marek
61d2ca503d arm64: dts: qcom: fix pm8150 gpio interrupts
This was mistakenly copied from the downstream dts, however the upstream
driver works differently.

I only tested this with the pm8150_gpios node (used with volume button),
but the 2 others should be the same.

Fixes: e92b61c8e7 ("arm64: dts: qcom: pm8150l: Add base dts file")
Fixes: 229d5bcad0 ("arm64: dts: qcom: pm8150b: Add base dts file")
Fixes: 5101f22a5c ("arm64: dts: qcom: pm8150: Add base dts file")
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Link: https://lore.kernel.org/r/20200420153543.14512-1-jonathan@marek.ca
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2020-04-20 12:45:15 -07:00
David S. Miller
b785b06cca Merge branch 'RFC-2863-Testing-Oper-status'
Andrew Lunn says:

====================
RFC 2863 Testing Oper status

This patchset add support for RFC 2863 Oper status testing.  An
interface is placed into this state when a self test is performed
using ethtool.

v2:
Fix date/kernel version in Documentation
Add reviewed-by tags
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:43:24 -07:00
Andrew Lunn
77e9b2ab45 net: ethtool: self_test: Mark interface in testing operative status
When an interface is executing a self test, put the interface into
operative status testing.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:43:24 -07:00
Andrew Lunn
db30a57779 net: Add testing sysfs attribute
Similar to speed, duplex and dorment, report the testing status
in sysfs.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:43:24 -07:00
Andrew Lunn
eec517cdb4 net: Add IF_OPER_TESTING
RFC 2863 defines the operational state testing. Add support for this
state, both as a IF_LINK_MODE_ and __LINK_STATE_.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 12:43:24 -07:00
Arnd Bergmann
d6b0a5b3ab Merge tag 'omap-for-v5.6/fixes-rc7-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes
Boot regression fix for N950/N9

We need to tag RNG as disabled for N950/N9 as it blocked by the secure
mode. We have a similar change done for N900, but I missed adding it
for N950/N9 with the recent RNG changes.

* tag 'omap-for-v5.6/fixes-rc7-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: OMAP3: disable RNG on N950/N9

Link: https://lore.kernel.org/r/pull-1585340588-558327@atomide.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-04-20 21:42:20 +02:00