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2020-12-04mt76: mt7615: retry if mt7615_mcu_init returns -EAGAINChuanhong Guo1-1/+8
mt7615_load_patch in mt7615/mcu.c sometimes fails with: mt7622-wmac 18000000.wmac: Failed to get patch semaphore and returns -EAGAIN. But this error is returned all the way up to mt7615_init_work with no actual retrial performed, leaving a broken wireless phy. Wait a bit and retry for up to 10 times before giving up. Signed-off-by: Chuanhong Guo <gch981213@gmail.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-12-04mt76: mt7915: fix VHT LDPC capabilityRyder Lee1-3/+3
The MCU field should contain a boolean 0/1, not the flag itself. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-12-04mt76: mt7915: measure channel noise and report it via surveyRyder Lee4-6/+55
Read per-stream measurements every 100 ms and build a simple moving average. Tested-by: Shayne Chen <shayne.chen@mediatek.com> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-12-04Merge tag 'auxbus-5.11-rc1' of ↵Leon Romanovsky9-0/+609
https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core into mlx5-next Auxiliary Bus support tag for 5.11-rc1 This is a signed tag for other subsystems to be able to pull in the auxiliary bus support into their trees for the 5.11-rc1 merge. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> * tag 'auxbus-5.11-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: driver core: auxiliary bus: minor coding style tweaks driver core: auxiliary bus: make remove function return void driver core: auxiliary bus: move slab.h from include file Add auxiliary bus support
2020-12-04driver core: auxiliary bus: minor coding style tweaksGreg Kroah-Hartman2-29/+35
For some reason, the original aux bus patch had some really long lines in a few places, probably due to it being a very long-lived patch in development by many different people. Fix that up so that the two files all have the same length lines and function formatting styles. Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Ertman <david.m.ertman@intel.com> Cc: Fred Oh <fred.oh@linux.intel.com> Cc: Kiran Patil <kiran.patil@intel.com> Cc: Leon Romanovsky <leonro@nvidia.com> Cc: Martin Habets <mhabets@solarflare.com> Cc: Parav Pandit <parav@mellanox.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Cc: Shiraz Saleem <shiraz.saleem@intel.com> Link: https://lore.kernel.org/r/X8oiSFTpYHw1xE/o@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-04driver core: auxiliary bus: make remove function return voidGreg Kroah-Hartman3-5/+4
There's an effort to move the remove() callback in the driver core to not return an int, as nothing can be done if this function fails. To make that effort easier, make the aux bus remove function void to start with so that no users have to be changed sometime in the future. Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Ertman <david.m.ertman@intel.com> Cc: Fred Oh <fred.oh@linux.intel.com> Cc: Kiran Patil <kiran.patil@intel.com> Cc: Leon Romanovsky <leonro@nvidia.com> Cc: Martin Habets <mhabets@solarflare.com> Cc: Parav Pandit <parav@mellanox.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Cc: Shiraz Saleem <shiraz.saleem@intel.com> Link: https://lore.kernel.org/r/X8ohB1ks1NK7kPop@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-04driver core: auxiliary bus: move slab.h from include fileGreg Kroah-Hartman2-1/+1
No need to include slab.h in include/linux/auxiliary_bus.h, as it is not needed there. Move it to drivers/base/auxiliary.c instead. Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Ertman <david.m.ertman@intel.com> Cc: Fred Oh <fred.oh@linux.intel.com> Cc: Kiran Patil <kiran.patil@intel.com> Cc: Leon Romanovsky <leonro@nvidia.com> Cc: Martin Habets <mhabets@solarflare.com> Cc: Parav Pandit <parav@mellanox.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Cc: Shiraz Saleem <shiraz.saleem@intel.com> Link: https://lore.kernel.org/r/X8og8xi3WkoYXet9@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-04Merge tag 'usb-serial-5.10-rc7' of ↵Greg Kroah-Hartman3-12/+13
https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus Johan writes: USB-serial fixes for 5.10-rc7 Here's a fix for a regression in the option driver which has been backported to the stable trees and fix for a small memory leak on open in the kl5kusb105 driver. Included are also various new device ids. All but the memleak fix has been in linux-next and with no reported issues. * tag 'usb-serial-5.10-rc7' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial: USB: serial: kl5kusb105: fix memleak on open USB: serial: ch341: sort device-id entries USB: serial: ch341: add new Product ID for CH341A USB: serial: option: fix Quectel BG96 matching USB: serial: option: add support for Thales Cinterion EXS82 USB: serial: option: add Fibocom NL668 variants
2020-12-04mac80211: set SDATA_STATE_RUNNING for monitor interfacesBorwankar, Antara1-0/+2
During restarrt, mac80211 is supposed to reconfigure the driver. When there's a monitor interface, the interface is added and the channel context for it was created, but not assigned to it as it was not considered running during the restart. Fix this by setting SDATA_STATE_RUNNING while adding monitor interfaces. Signed-off-by: Borwankar, Antara <antara.borwankar@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/iwlwifi.20201129172929.e1df99693a4c.I494579f28018c2d0b9d4083a664cf872c28405ae@changeid [reword commit log] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-12-04cfg80211: initialize rekey_dataSara Sharon1-1/+1
In case we have old supplicant, the akm field is uninitialized. Signed-off-by: Sara Sharon <sara.sharon@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/iwlwifi.20201129172929.930f0ab7ebee.Ic546e384efab3f4a89f318eafddc3eb7d556aecb@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-12-04mac80211: fix return value of ieee80211_chandef_he_6ghz_operWen Gong1-1/+1
ieee80211_chandef_he_6ghz_oper() needs to return true if it determined a value 6 GHz chandef, fix that. Fixes: 1d00ce807efa ("mac80211: support S1G association") Signed-off-by: Wen Gong <wgong@codeaurora.org> Link: https://lore.kernel.org/r/1606121152-3452-1-git-send-email-wgong@codeaurora.org [rewrite commit message] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-12-04mmc: tmio: improve bringing HW to a sane state with MMC_POWER_OFFWolfram Sang1-3/+3
Further testing of error cases revealed that downgrade is not enough, so we need to reset the SCC which is done by calling the custom reset function. This reset function can distinguish between the various SDHI variants, so protecting the call with MIN_RCAR2 is enough here. Fixes: 24ce2d7b8bea ("mmc: tmio: bring tuning HW to a sane state with MMC_POWER_OFF") Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20201125204953.3344-1-wsa+renesas@sang-engineering.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-12-04Add auxiliary bus supportDave Ertman9-0/+604
Add support for the Auxiliary Bus, auxiliary_device and auxiliary_driver. It enables drivers to create an auxiliary_device and bind an auxiliary_driver to it. The bus supports probe/remove shutdown and suspend/resume callbacks. Each auxiliary_device has a unique string based id; driver binds to an auxiliary_device based on this id through the bus. Co-developed-by: Kiran Patil <kiran.patil@intel.com> Co-developed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Co-developed-by: Fred Oh <fred.oh@linux.intel.com> Co-developed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Kiran Patil <kiran.patil@intel.com> Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Fred Oh <fred.oh@linux.intel.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Dave Ertman <david.m.ertman@intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com> Reviewed-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Martin Habets <mhabets@solarflare.com> Link: https://lore.kernel.org/r/20201113161859.1775473-2-david.m.ertman@intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com> Link: https://lore.kernel.org/r/160695681289.505290.8978295443574440604.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-04USB: serial: kl5kusb105: fix memleak on openJohan Hovold1-6/+4
Fix memory leak of control-message transfer buffer on successful open(). Fixes: 6774d5f53271 ("USB: serial: kl5kusb105: fix open error path") Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org>
2020-12-04pinctrl: amd: remove debounce filter setting in IRQ type settingCoiby Xu1-7/+0
Debounce filter setting should be independent from IRQ type setting because according to the ACPI specs, there are separate arguments for specifying debounce timeout and IRQ type in GpioIo() and GpioInt(). Together with commit 06abe8291bc31839950f7d0362d9979edc88a666 ("pinctrl: amd: fix incorrect way to disable debounce filter") and Andy's patch "gpiolib: acpi: Take into account debounce settings" [1], this will fix broken touchpads for laptops whose BIOS set the debounce timeout to a relatively large value. For example, the BIOS of Lenovo AMD gaming laptops including Legion-5 15ARH05 (R7000), Legion-5P (R7000P) and IdeaPad Gaming 3 15ARH05, set the debounce timeout to 124.8ms. This led to the kernel receiving only ~7 HID reports per second from the Synaptics touchpad (MSFT0001:00 06CB:7F28). Existing touchpads like [2][3] are not troubled by this bug because the debounce timeout has been set to 0 by the BIOS before enabling the debounce filter in setting IRQ type. [1] https://lore.kernel.org/linux-gpio/20201111222008.39993-11-andriy.shevchenko@linux.intel.com/ 8dcb7a15a585 ("gpiolib: acpi: Take into account debounce settings") [2] https://github.com/Syniurge/i2c-amd-mp2/issues/11#issuecomment-721331582 [3] https://forum.manjaro.org/t/random-short-touchpad-freezes/30832/28 Signed-off-by: Coiby Xu <coiby.xu@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/linux-gpio/CAHp75VcwiGREBUJ0A06EEw-SyabqYsp%2Bdqs2DpSrhaY-2GVdAA%40mail.gmail.com/ BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1887190 Link: https://lore.kernel.org/r/20201125130320.311059-1-coiby.xu@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-12-04Merge tag 'gpio-fixes-for-v5.10-rc7' of ↵Linus Walleij5-7/+21
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into fixes gpio fixes for v5.10-rc7 - disable pm_runtime in error path in gpio-arizona - fix a NULL pointer dereference in gpio-dwapb - fix a resource leak in gpio-zynq - balance the freeing of pinctrl ranges if PINCTRL is not selected - fix a potential use-after-free error in gpio-mvebu
2020-12-04batman-adv: Drop unused soft-interface.h include in fragmentation.cSimon Wunderlich1-1/+0
The commit 992b03b88e36 ("batman-adv: Don't always reallocate the fragmentation skb head") removed the last user of functions from soft-interface.h. Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2020-12-04batman-adv: Drop legacy code for auto deleting mesh interfacesSven Eckelmann3-27/+5
The only way to automatically drop batadv mesh interfaces when all soft interfaces were removed was dropped with the sysfs support. It is no longer needed to have them handled by kernel anymore. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2020-12-04batman-adv: Drop deprecated debugfs supportSven Eckelmann31-2574/+3
The debugfs support in batman-adv was marked as deprecated by the commit 00caf6a2b318 ("batman-adv: Mark debugfs functionality as deprecated") and scheduled for removal in 2021. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2020-12-04batman-adv: Drop deprecated sysfs supportSven Eckelmann13-1634/+1
The sysfs in batman-adv support was marked as deprecated by the commit 42cdd521487f ("batman-adv: ABI: Mark sysfs files as deprecated") and scheduled for removal in 2021. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2020-12-04batman-adv: Allow selection of routing algorithm over rtnetlinkSven Eckelmann4-6/+44
A batadv net_device is associated to a B.A.T.M.A.N. routing algorithm. This algorithm has to be selected before the interface is initialized and cannot be changed after that. The only way to select this algorithm was a module parameter which specifies the default algorithm used during the creation of the net_device. This module parameter is writeable over /sys/module/batman_adv/parameters/routing_algo and thus allows switching of the routing algorithm: 1. change routing_algo parameter 2. create new batadv net_device But this is not race free because another process can be scheduled between 1 + 2 and in that time frame change the routing_algo parameter again. It is much cleaner to directly provide this information inside the rtnetlink's RTM_NEWLINK message. The two processes would be (in regards of the creation parameter of their batadv interfaces) be isolated. This also eases the integration of batadv devices inside tools like network-manager or systemd-networkd which are not expecting to operate on /sys before a new net_device is created. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2020-12-04batman-adv: Prepare infrastructure for newlink settingsSven Eckelmann2-0/+59
The batadv generic netlink family can be used to retrieve the current state and set various configuration settings. But there are also settings which must be set before the actual interface is created. The rtnetlink already uses IFLA_INFO_DATA to allow net_device families to transfer such configurations. The minimal required functionality for this is now available for the batadv rtnl_link_ops. Also a new IFLA class of attributes will be attached to it because rtnetlink only allows 51 different attributes but batadv_nl_attrs already contains 62 attributes. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2020-12-04batman-adv: Add new include for min/max helpersSven Eckelmann9-1/+9
The commit b296a6d53339 ("kernel.h: split out min()/max() et al. helpers") moved the min/max helper functionality from kernel.h to minmax.h. Adjust the kernel code accordingly to avoid fragile indirect includes. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2020-12-04batman-adv: Start new development cycleSimon Wunderlich1-1/+1
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2020-12-04selftests/bpf: Fix invalid use of strncat in test_sockmapAndrii Nakryiko1-13/+23
strncat()'s third argument is how many bytes will be added *in addition* to already existing bytes in destination. Plus extra zero byte will be added after that. So existing use in test_sockmap has many opportunities to overflow the string and cause memory corruptions. And in this case, GCC complains for a good reason. Fixes: 16962b2404ac ("bpf: sockmap, add selftests") Fixes: 73563aa3d977 ("selftests/bpf: test_sockmap, print additional test options") Fixes: 1ade9abadfca ("bpf: test_sockmap, add options for msg_pop_data() helper") Fixes: 463bac5f1ca7 ("bpf, selftests: Add test for ktls with skb bpf ingress policy") Fixes: e9dd904708c4 ("bpf: add tls support for testing in test_sockmap") Fixes: 753fb2ee0934 ("bpf: sockmap, add msg_peek tests to test_sockmap") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203235440.2302137-2-andrii@kernel.org
2020-12-04libbpf: Use memcpy instead of strncpy to please GCCAndrii Nakryiko1-1/+1
Some versions of GCC are really nit-picky about strncpy() use. Use memcpy(), as they are pretty much equivalent for the case of fixed length strings. Fixes: e459f49b4394 ("libbpf: Separate XDP program load with xsk socket creation") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203235440.2302137-1-andrii@kernel.org
2020-12-04Merge tag 'drm-misc-fixes-2020-12-03' of ↵Dave Airlie5-9/+18
git://anongit.freedesktop.org/drm/drm-misc into drm-fixes One bridge fix for OMAP, one for a race condition in a panel, two for uninitialized variables in rockchip and nouveau, and two fixes for mxsfb to fix a regression with modifiers and a fix for a fence synchronization issue. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20201203125943.h2ft2xoywunt5orl@gilmour
2020-12-04Merge tag 'amd-drm-fixes-5.10-2020-12-02' of ↵Dave Airlie3-9/+36
git://people.freedesktop.org/~agd5f/linux into drm-fixes amd-drm-fixes-5.10-2020-12-02: amdgpu: - SMU11 manual fan fix - Renoir display clock fix - VCN3 dynamic powergating fix Signed-off-by: Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexdeucher@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201203044815.41257-1-alexander.deucher@amd.com
2020-12-04Merge tag 'drm-intel-fixes-2020-12-03' of ↵Dave Airlie9-124/+143
git://anongit.freedesktop.org/drm/drm-intel into drm-fixes Fixes for GPU hang, null dereference, suspend-resume, power consumption, and use-after-free. - Program mocs:63 for cache eviction on gen9 (Chris) - Protect context lifetime with RCU (Chris) - Split the breadcrumb spinlock between global and contexts (Chris) - Retain default context state across shrinking (Venkata) - Limit frequency drop to RPe on parking (Chris) - Return earlier from intel_modeset_init() without display (Jani) - Defer initial modeset until after GGTT is initialized (Chris) Signed-off-by: Dave Airlie <airlied@redhat.com> From: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201203134705.GA1575873@intel.com
2020-12-04Merge branch 'Support BTF-powered BPF tracing programs for kernel modules'Alexei Starovoitov29-280/+1230
Andrii Nakryiko says: ==================== This patch sets extends kernel and libbpf with support for attaching BTF-powered raw tracepoint (tp_btf) and tracing (fentry/fexit/fmod_ret/lsm) BPF programs to BPF hooks defined in kernel modules. As part of that, libbpf now supports performing CO-RE relocations against types in kernel module BTFs, in addition to existing vmlinux BTF support. Kernel UAPI for BPF_PROG_LOAD now allows to specify kernel module (or vmlinux) BTF object FD in attach_btf_obj_fd field, aliased to attach_prog_fd. This is used to identify which BTF object needs to be used for finding BTF type by provided attach_btf_id. This patch set also sets up a convenient and fully-controlled custom kernel module (called "bpf_testmod"), that is a predictable playground for all the BPF selftests, that rely on module BTFs. Currently pahole doesn't generate BTF_KIND_FUNC info for ftrace-able static functions in kernel modules, so expose traced function in bpf_sidecar.ko. Once pahole is enhanced, we can go back to static function. From end user perspective there are no extra actions that need to happen. Libbpf will continue searching across all kernel module BTFs, if desired attach BTF type is not found in vmlinux. That way it doesn't matter if BPF hook that user is trying to attach to is built into vmlinux image or is loaded in kernel module. v5->v6: - move btf_put() back to syscall.c (kernel test robot); - added close(fd) in patch #5 (John); v4->v5: - use FD to specify BTF object (Alexei); - move prog->aux->attach_btf putting into bpf_prog_free() for consistency with putting prog->aux->dst_prog; - fix BTF FD leak(s) in libbpf; v3->v4: - merge together patch sets [0] and [1]; - avoid increasing bpf_reg_state by reordering fields (Alexei); - preserve btf_data_size in struct module; v2->v3: - fix subtle uninitialized variable use in BTF ID iteration code; v1->v2: - module_put() inside preempt_disable() region (Alexei); - bpf_sidecar -> bpf_testmod rename (Alexei); - test_progs more relaxed handling of bpf_testmod; - test_progs marks skipped sub-tests properly as SKIP now. [0] https://patchwork.kernel.org/project/netdevbpf/list/?series=393677&state=* [1] https://patchwork.kernel.org/project/netdevbpf/list/?series=393679&state=* ==================== Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2020-12-04selftests/bpf: Add fentry/fexit/fmod_ret selftest for kernel moduleAndrii Nakryiko2-0/+119
Add new selftest checking attachment of fentry/fexit/fmod_ret (and raw tracepoint ones for completeness) BPF programs to kernel module function. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-15-andrii@kernel.org
2020-12-04selftests/bpf: Add tp_btf CO-RE reloc test for modulesAndrii Nakryiko2-2/+33
Add another CO-RE relocation test for kernel module relocations. This time for tp_btf with direct memory reads. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-14-andrii@kernel.org
2020-12-04libbpf: Support attachment of BPF tracing programs to kernel modulesAndrii Nakryiko3-32/+112
Teach libbpf to search for BTF types in kernel modules for tracing BPF programs. This allows attachment of raw_tp/fentry/fexit/fmod_ret/etc BPF program types to tracepoints and functions in kernel modules. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-13-andrii@kernel.org
2020-12-04libbpf: Factor out low-level BPF program loading helperAndrii Nakryiko3-50/+113
Refactor low-level API for BPF program loading to not rely on public API types. This allows painless extension without constant efforts to cleverly not break backwards compatibility. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-12-andrii@kernel.org
2020-12-04bpf: Allow to specify kernel module BTFs when attaching BPF programsAndrii Nakryiko5-33/+69
Add ability for user-space programs to specify non-vmlinux BTF when attaching BTF-powered BPF programs: raw_tp, fentry/fexit/fmod_ret, LSM, etc. For this, attach_prog_fd (now with the alias name attach_btf_obj_fd) should specify FD of a module or vmlinux BTF object. For backwards compatibility reasons, 0 denotes vmlinux BTF. Only kernel BTF (vmlinux or module) can be specified. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-11-andrii@kernel.org
2020-12-04bpf: Remove hard-coded btf_vmlinux assumption from BPF verifierAndrii Nakryiko7-67/+148
Remove a permeating assumption thoughout BPF verifier of vmlinux BTF. Instead, wherever BTF type IDs are involved, also track the instance of struct btf that goes along with the type ID. This allows to gradually add support for kernel module BTFs and using/tracking module types across BPF helper calls and registers. This patch also renames btf_id() function to btf_obj_id() to minimize naming clash with using btf_id to denote BTF *type* ID, rather than BTF *object*'s ID. Also, altough btf_vmlinux can't get destructed and thus doesn't need refcounting, module BTFs need that, so apply BTF refcounting universally when BPF program is using BTF-powered attachment (tp_btf, fentry/fexit, etc). This makes for simpler clean up code. Now that BTF type ID is not enough to uniquely identify a BTF type, extend BPF trampoline key to include BTF object ID. To differentiate that from target program BPF ID, set 31st bit of type ID. BTF type IDs (at least currently) are not allowed to take full 32 bits, so there is no danger of confusing that bit with a valid BTF type ID. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-10-andrii@kernel.org
2020-12-04selftests/bpf: Add CO-RE relocs selftest relying on kernel module BTFAndrii Nakryiko3-11/+151
Add a self-tests validating libbpf is able to perform CO-RE relocations against the type defined in kernel module BTF. if bpf_testmod.o is not supported by the kernel (e.g., due to version mismatch), skip tests, instead of failing. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-9-andrii@kernel.org
2020-12-04selftests/bpf: Add support for marking sub-tests as skippedAndrii Nakryiko1-3/+3
Previously skipped sub-tests would be counted as passing with ":OK" appened in the log. Change that to be accounted as ":SKIP". Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-8-andrii@kernel.org
2020-12-04selftests/bpf: Add bpf_testmod kernel module for testingAndrii Nakryiko9-3/+198
Add bpf_testmod module, which is conceptually out-of-tree module and provides ways for selftests/bpf to test various kernel module-related functionality: raw tracepoint, fentry/fexit/fmod_ret, etc. This module will be auto-loaded by test_progs test runner and expected by some of selftests to be present and loaded. Pahole currently isn't able to generate BTF for static functions in kernel modules, so make sure traced function is global. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20201203204634.1325171-7-andrii@kernel.org
2020-12-04libbpf: Add kernel module BTF support for CO-RE relocationsAndrii Nakryiko1-10/+169
Teach libbpf to search for candidate types for CO-RE relocations across kernel modules BTFs, in addition to vmlinux BTF. If at least one candidate type is found in vmlinux BTF, kernel module BTFs are not iterated. If vmlinux BTF has no matching candidates, then find all kernel module BTFs and search for all matching candidates across all of them. Kernel's support for module BTFs are inferred from the support for BTF name pointer in BPF UAPI. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-6-andrii@kernel.org
2020-12-04libbpf: Refactor CO-RE relocs to not assume a single BTF objectAndrii Nakryiko1-76/+111
Refactor CO-RE relocation candidate search to not expect a single BTF, rather return all candidate types with their corresponding BTF objects. This will allow to extend CO-RE relocations to accommodate kernel module BTFs. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20201203204634.1325171-5-andrii@kernel.org
2020-12-04libbpf: Add internal helper to load BTF data by FDAndrii Nakryiko2-26/+36
Add a btf_get_from_fd() helper, which constructs struct btf from in-kernel BTF data by FD. This is used for loading module BTFs. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-4-andrii@kernel.org
2020-12-04bpf: Keep module's btf_data_size intact after loadAndrii Nakryiko1-1/+0
Having real btf_data_size stored in struct module is benefitial to quickly determine which kernel modules have associated BTF object and which don't. There is no harm in keeping this info, as opposed to keeping invalid pointer. Fixes: 607c543f939d ("bpf: Sanitize BTF data pointer after module is loaded") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-3-andrii@kernel.org
2020-12-04bpf: Fix bpf_put_raw_tracepoint()'s use of __module_address()Andrii Nakryiko1-3/+5
__module_address() needs to be called with preemption disabled or with module_mutex taken. preempt_disable() is enough for read-only uses, which is what this fix does. Also, module_put() does internal check for NULL, so drop it as well. Fixes: a38d1107f937 ("bpf: support raw tracepoints in modules") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20201203204634.1325171-2-andrii@kernel.org
2020-12-04Merge branch 'Add support to set window_clamp from bpf setsockops'Alexei Starovoitov7-9/+60
Prankur gupta says: ==================== This patch contains support to set tcp window_field field from bpf setsockops. v2: Used TCP_WINDOW_CLAMP setsockopt logic for bpf_setsockopt (review comment addressed) v3: Created a common function for duplicated code (review comment addressed) v4: Removing logic to pass struct sock and struct tcp_sock together (review comment addressed) ==================== Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2020-12-04selftests/bpf: Add Userspace tests for TCP_WINDOW_CLAMPPrankur gupta4-0/+40
Adding selftests for new added functionality to set TCP_WINDOW_CLAMP from bpf setsockopt. Signed-off-by: Prankur gupta <prankgup@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201202213152.435886-3-prankgup@fb.com
2020-12-04bpf: Adds support for setting window clampPrankur gupta3-9/+20
Adds a new bpf_setsockopt for TCP sockets, TCP_BPF_WINDOW_CLAMP, which sets the maximum receiver window size. It will be useful for limiting receiver window based on RTT. Signed-off-by: Prankur gupta <prankgup@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201202213152.435886-2-prankgup@fb.com
2020-12-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski177-738/+1450
Conflicts: drivers/net/ethernet/ibm/ibmvnic.c Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-04cifs: refactor create_sd_buf() and and avoid corrupting the bufferRonnie Sahlberg2-35/+38
When mounting with "idsfromsid" mount option, Azure corrupted the owner SIDs due to excessive padding caused by placing the owner fields at the end of the security descriptor on create. Placing owners at the front of the security descriptor (rather than the end) is also safer, as the number of ACEs (that follow it) are variable. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Suggested-by: Rohith Surabattula <rohiths@microsoft.com> CC: Stable <stable@vger.kernel.org> # v5.8 Signed-off-by: Steve French <stfrench@microsoft.com>
2020-12-04cifs: add NULL check for ses->tcon_ipcAurelien Aptel1-1/+2
In some scenarios (DFS and BAD_NETWORK_NAME) set_root_set() can be called with a NULL ses->tcon_ipc. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz> CC: Stable <stable@vger.kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
generated by cgit v1.2.3 (git 2.39.0) at 2025-10-03 10:31:04 +0300