Commit Graph

1268 Commits

Author SHA1 Message Date
Linus Torvalds
f4484d138b Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
 "55 patches.

  Subsystems affected by this patch series: percpu, procfs, sysctl,
  misc, core-kernel, get_maintainer, lib, checkpatch, binfmt, nilfs2,
  hfs, fat, adfs, panic, delayacct, kconfig, kcov, and ubsan"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (55 commits)
  lib: remove redundant assignment to variable ret
  ubsan: remove CONFIG_UBSAN_OBJECT_SIZE
  kcov: fix generic Kconfig dependencies if ARCH_WANTS_NO_INSTR
  lib/Kconfig.debug: make TEST_KMOD depend on PAGE_SIZE_LESS_THAN_256KB
  btrfs: use generic Kconfig option for 256kB page size limit
  arch/Kconfig: split PAGE_SIZE_LESS_THAN_256KB from PAGE_SIZE_LESS_THAN_64KB
  configs: introduce debug.config for CI-like setup
  delayacct: track delays from memory compact
  Documentation/accounting/delay-accounting.rst: add thrashing page cache and direct compact
  delayacct: cleanup flags in struct task_delay_info and functions use it
  delayacct: fix incomplete disable operation when switch enable to disable
  delayacct: support swapin delay accounting for swapping without blkio
  panic: remove oops_id
  panic: use error_report_end tracepoint on warnings
  fs/adfs: remove unneeded variable make code cleaner
  FAT: use io_schedule_timeout() instead of congestion_wait()
  hfsplus: use struct_group_attr() for memcpy() region
  nilfs2: remove redundant pointer sbufs
  fs/binfmt_elf: use PT_LOAD p_align values for static PIE
  const_structs.checkpatch: add frequently used ops structs
  ...
2022-01-20 10:41:01 +02:00
Yafang Shao
d068144d3b samples/bpf/test_overhead_kprobe_kern: replace bpf_probe_read_kernel with bpf_probe_read_kernel_str to get task comm
bpf_probe_read_kernel_str() will add a nul terminator to the dst, then
we don't care about if the dst size is big enough.  This patch also
replaces the hard-coded 16 with TASK_COMM_LEN to make it grepable.

Link: https://lkml.kernel.org/r/20211120112738.45980-6-laoar.shao@gmail.com
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc: Michal Miroslaw <mirq-linux@rere.qmqm.pl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Kees Cook <keescook@chromium.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-01-20 08:52:53 +02:00
Linus Torvalds
4d66020dce Tracing updates for 5.17:
New:
 
 - The Real Time Linux Analysis (RTLA) tool is added to the tools directory.
 
 - Can safely filter on user space pointers with: field.ustring ~ "match-string"
 
 - eprobes can now be filtered like any other event.
 
 - trace_marker(_raw) now uses stream_open() to allow multiple threads to safely
   write to it. Note, this could possibly break existing user space, but we will
   not know until we hear about it, and then can revert the change if need be.
 
 - New field in events to display when bottom halfs are disabled.
 
 - Sorting of the ftrace functions are now done at compile time instead of
   at bootup.
 
 Infrastructure changes to support future efforts:
 
 - Added __rel_loc type for trace events. Similar to __data_loc but the offset
   to the dynamic data is based off of the location of the descriptor and not
   the beginning of the event. Needed for user defined events.
 
 - Some simplification of event trigger code.
 
 - Make synthetic events process its callback better to not hinder other
   event callbacks that are registered. Needed for user defined events.
 
 And other small fixes and clean ups.
 -
 -----BEGIN PGP SIGNATURE-----
 
 iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYeGvcxQccm9zdGVkdEBn
 b29kbWlzLm9yZwAKCRAp5XQQmuv6qrZtAP9ICjJxX54MTErElhhUL/NFLV7wqhJi
 OIAgmp6jGVRqPAD+JxQtBnGH+3XMd71ioQkTfQ1rp+jBz2ERBj2DmELUAg0=
 =zmda
 -----END PGP SIGNATURE-----

Merge tag 'trace-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:
 "New:

   - The Real Time Linux Analysis (RTLA) tool is added to the tools
     directory.

   - Can safely filter on user space pointers with: field.ustring ~
     "match-string"

   - eprobes can now be filtered like any other event.

   - trace_marker(_raw) now uses stream_open() to allow multiple threads
     to safely write to it. Note, this could possibly break existing
     user space, but we will not know until we hear about it, and then
     can revert the change if need be.

   - New field in events to display when bottom halfs are disabled.

   - Sorting of the ftrace functions are now done at compile time
     instead of at bootup.

  Infrastructure changes to support future efforts:

   - Added __rel_loc type for trace events. Similar to __data_loc but
     the offset to the dynamic data is based off of the location of the
     descriptor and not the beginning of the event. Needed for user
     defined events.

   - Some simplification of event trigger code.

   - Make synthetic events process its callback better to not hinder
     other event callbacks that are registered. Needed for user defined
     events.

  And other small fixes and cleanups"

* tag 'trace-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (50 commits)
  tracing: Add ustring operation to filtering string pointers
  rtla: Add rtla timerlat hist documentation
  rtla: Add rtla timerlat top documentation
  rtla: Add rtla timerlat documentation
  rtla: Add rtla osnoise hist documentation
  rtla: Add rtla osnoise top documentation
  rtla: Add rtla osnoise man page
  rtla: Add Documentation
  rtla/timerlat: Add timerlat hist mode
  rtla: Add timerlat tool and timelart top mode
  rtla/osnoise: Add the hist mode
  rtla/osnoise: Add osnoise top mode
  rtla: Add osnoise tool
  rtla: Helper functions for rtla
  rtla: Real-Time Linux Analysis tool
  tracing/osnoise: Properly unhook events if start_per_cpu_kthreads() fails
  tracing: Remove duplicate warnings when calling trace_create_file()
  tracing/kprobes: 'nmissed' not showed correctly for kretprobe
  tracing: Add test for user space strings when filtering on string pointers
  tracing: Have syscall trace events use trace_event_buffer_lock_reserve()
  ...
2022-01-16 10:15:32 +02:00
Linus Torvalds
3bad80dab9 Char/Misc and other driver changes for 5.17-rc1
Here is the large set of char, misc, and other "small" driver subsystem
 changes for 5.17-rc1.
 
 Lots of different things are in here for char/misc drivers such as:
 	- habanalabs driver updates
 	- mei driver updates
 	- lkdtm driver updates
 	- vmw_vmci driver updates
 	- android binder driver updates
 	- other small char/misc driver updates
 
 Also smaller driver subsystems have also been updated, including:
 	- fpga subsystem updates
 	- iio subsystem updates
 	- soundwire subsystem updates
 	- extcon subsystem updates
 	- gnss subsystem updates
 	- phy subsystem updates
 	- coresight subsystem updates
 	- firmware subsystem updates
 	- comedi subsystem updates
 	- mhi subsystem updates
 	- speakup subsystem updates
 	- rapidio subsystem updates
 	- spmi subsystem updates
 	- virtual driver updates
 	- counter subsystem updates
 
 Too many individual changes to summarize, the shortlog contains the full
 details.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYeGNAQ8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ymoVgCg1CPjMu8/SDj3Sm3a1UMQJn9jnl8AnjQcEp3z
 hMr9mISG4r6g4PvjrJBj
 =9May
 -----END PGP SIGNATURE-----

Merge tag 'char-misc-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver updates from Greg KH:
 "Here is the large set of char, misc, and other "small" driver
  subsystem changes for 5.17-rc1.

  Lots of different things are in here for char/misc drivers such as:

   - habanalabs driver updates

   - mei driver updates

   - lkdtm driver updates

   - vmw_vmci driver updates

   - android binder driver updates

   - other small char/misc driver updates

  Also smaller driver subsystems have also been updated, including:

   - fpga subsystem updates

   - iio subsystem updates

   - soundwire subsystem updates

   - extcon subsystem updates

   - gnss subsystem updates

   - phy subsystem updates

   - coresight subsystem updates

   - firmware subsystem updates

   - comedi subsystem updates

   - mhi subsystem updates

   - speakup subsystem updates

   - rapidio subsystem updates

   - spmi subsystem updates

   - virtual driver updates

   - counter subsystem updates

  Too many individual changes to summarize, the shortlog contains the
  full details.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (406 commits)
  counter: 104-quad-8: Fix use-after-free by quad8_irq_handler
  dt-bindings: mux: Document mux-states property
  dt-bindings: ti-serdes-mux: Add defines for J721S2 SoC
  counter: remove old and now unused registration API
  counter: ti-eqep: Convert to new counter registration
  counter: stm32-lptimer-cnt: Convert to new counter registration
  counter: stm32-timer-cnt: Convert to new counter registration
  counter: microchip-tcb-capture: Convert to new counter registration
  counter: ftm-quaddec: Convert to new counter registration
  counter: intel-qep: Convert to new counter registration
  counter: interrupt-cnt: Convert to new counter registration
  counter: 104-quad-8: Convert to new counter registration
  counter: Update documentation for new counter registration functions
  counter: Provide alternative counter registration functions
  counter: stm32-timer-cnt: Convert to counter_priv() wrapper
  counter: stm32-lptimer-cnt: Convert to counter_priv() wrapper
  counter: ti-eqep: Convert to counter_priv() wrapper
  counter: ftm-quaddec: Convert to counter_priv() wrapper
  counter: intel-qep: Convert to counter_priv() wrapper
  counter: microchip-tcb-capture: Convert to counter_priv() wrapper
  ...
2022-01-14 16:02:28 +01:00
Geliang Tang
ecbe794e77 tracing: Fix mismatched comment in __string_len
Here __assign_str_len() should be used for the __string_len type, instead
of __assign_str() in the comment.

Link: https://lkml.kernel.org/r/5c012db463392d0e6d4f0636203d778962ad060a.1640170494.git.geliang.tang@suse.com

Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Fixes: 883b4aee4d ("tracing: Add trace_event helper macros __string_len() and __assign_str_len()")
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2022-01-13 16:23:05 -05:00
Linus Torvalds
64ad946152 - Get rid of all the .fixup sections because this generates
misleading/wrong stacktraces and confuse RELIABLE_STACKTRACE and
 LIVEPATCH as the backtrace misses the function which is being fixed up.
 
 - Add Straight Light Speculation mitigation support which uses a new
 compiler switch -mharden-sls= which sticks an INT3 after a RET or an
 indirect branch in order to block speculation after them. Reportedly,
 CPUs do speculate behind such insns.
 
 - The usual set of cleanups and improvements
 -----BEGIN PGP SIGNATURE-----
 
 iQIyBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmHfKA0ACgkQEsHwGGHe
 VUqLJg/2I2X2xXr5filJVaK+sQgmvDzk67DKnbxRBW2xcPF+B5sSW5yhe3G5UPW7
 SJVdhQ3gHcTiliGGlBf/VE7KXbqxFN0vO4/VFHZm78r43g7OrXTxz6WXXQRJ1n67
 U3YwRH3b6cqXZNFMs+X4bJt6qsGJM1kdTTZ2as4aERnaFr5AOAfQvfKbyhxLe/XA
 3SakfYISVKCBQ2RkTfpMpwmqlsatGFhTC5IrvuDQ83dDsM7O+Dx1J6Gu3fwjKmie
 iVzPOjCh+xTpZQp/SIZmt7MzoduZvpSym4YVyHvEnMiexQT4AmyaRthWqrhnEXY/
 qOvj8/XIqxmix8EaooGqRIK0Y2ZegxkPckNFzaeC3lsWohwMIGIhNXwHNEeuhNyH
 yvNGAW9Cq6NeDRgz5MRUXcimYw4P4oQKYLObS1WqFZhNMqm4sNtoEAYpai/lPYfs
 zUDckgXF2AoPOsSqy3hFAVaGovAgzfDaJVzkt0Lk4kzzjX2WQiNLhmiior460w+K
 0l2Iej58IajSp3MkWmFH368Jo8YfUVmkjbbpsmjsBppA08e1xamJB7RmswI/Ezj6
 s5re6UioCD+UYdjWx41kgbvYdvIkkZ2RLrktoZd/hqHrOLWEIiwEbyFO2nRFJIAh
 YjvPkB1p7iNuAeYcP1x9Ft9GNYVIsUlJ+hK86wtFCqy+abV+zQ==
 =R52z
 -----END PGP SIGNATURE-----

Merge tag 'x86_core_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 core updates from Borislav Petkov:

 - Get rid of all the .fixup sections because this generates
   misleading/wrong stacktraces and confuse RELIABLE_STACKTRACE and
   LIVEPATCH as the backtrace misses the function which is being fixed
   up.

 - Add Straight Line Speculation mitigation support which uses a new
   compiler switch -mharden-sls= which sticks an INT3 after a RET or an
   indirect branch in order to block speculation after them. Reportedly,
   CPUs do speculate behind such insns.

 - The usual set of cleanups and improvements

* tag 'x86_core_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
  x86/entry_32: Fix segment exceptions
  objtool: Remove .fixup handling
  x86: Remove .fixup section
  x86/word-at-a-time: Remove .fixup usage
  x86/usercopy: Remove .fixup usage
  x86/usercopy_32: Simplify __copy_user_intel_nocache()
  x86/sgx: Remove .fixup usage
  x86/checksum_32: Remove .fixup usage
  x86/vmx: Remove .fixup usage
  x86/kvm: Remove .fixup usage
  x86/segment: Remove .fixup usage
  x86/fpu: Remove .fixup usage
  x86/xen: Remove .fixup usage
  x86/uaccess: Remove .fixup usage
  x86/futex: Remove .fixup usage
  x86/msr: Remove .fixup usage
  x86/extable: Extend extable functionality
  x86/entry_32: Remove .fixup usage
  x86/entry_64: Remove .fixup usage
  x86/copy_mc_64: Remove .fixup usage
  ...
2022-01-12 16:31:19 -08:00
Linus Torvalds
8efd0d9c31 Networking changes for 5.17.
Core
 ----
 
  - Defer freeing TCP skbs to the BH handler, whenever possible,
    or at least perform the freeing outside of the socket lock section
    to decrease cross-CPU allocator work and improve latency.
 
  - Add netdevice refcount tracking to locate sources of netdevice
    and net namespace refcount leaks.
 
  - Make Tx watchdog less intrusive - avoid pausing Tx and restarting
    all queues from a single CPU removing latency spikes.
 
  - Various small optimizations throughout the stack from Eric Dumazet.
 
  - Make netdev->dev_addr[] constant, force modifications to go via
    appropriate helpers to allow us to keep addresses in ordered data
    structures.
 
  - Replace unix_table_lock with per-hash locks, improving performance
    of bind() calls.
 
  - Extend skb drop tracepoint with a drop reason.
 
  - Allow SO_MARK and SO_PRIORITY setsockopt under CAP_NET_RAW.
 
 BPF
 ---
 
  - New helpers:
    - bpf_find_vma(), find and inspect VMAs for profiling use cases
    - bpf_loop(), runtime-bounded loop helper trading some execution
      time for much faster (if at all converging) verification
    - bpf_strncmp(), improve performance, avoid compiler flakiness
    - bpf_get_func_arg(), bpf_get_func_ret(), bpf_get_func_arg_cnt()
      for tracing programs, all inlined by the verifier
 
  - Support BPF relocations (CO-RE) in the kernel loader.
 
  - Further the support for BTF_TYPE_TAG annotations.
 
  - Allow access to local storage in sleepable helpers.
 
  - Convert verifier argument types to a composable form with different
    attributes which can be shared across types (ro, maybe-null).
 
  - Prepare libbpf for upcoming v1.0 release by cleaning up APIs,
    creating new, extensible ones where missing and deprecating those
    to be removed.
 
 Protocols
 ---------
 
  - WiFi (mac80211/cfg80211):
    - notify user space about long "come back in N" AP responses,
      allow it to react to such temporary rejections
    - allow non-standard VHT MCS 10/11 rates
    - use coarse time in airtime fairness code to save CPU cycles
 
  - Bluetooth:
    - rework of HCI command execution serialization to use a common
      queue and work struct, and improve handling errors reported
      in the middle of a batch of commands
    - rework HCI event handling to use skb_pull_data, avoiding packet
      parsing pitfalls
    - support AOSP Bluetooth Quality Report
 
  - SMC:
    - support net namespaces, following the RDMA model
    - improve connection establishment latency by pre-clearing buffers
    - introduce TCP ULP for automatic redirection to SMC
 
  - Multi-Path TCP:
    - support ioctls: SIOCINQ, OUTQ, and OUTQNSD
    - support socket options: IP_TOS, IP_FREEBIND, IP_TRANSPARENT,
      IPV6_FREEBIND, and IPV6_TRANSPARENT, TCP_CORK and TCP_NODELAY
    - support cmsgs: TCP_INQ
    - improvements in the data scheduler (assigning data to subflows)
    - support fastclose option (quick shutdown of the full MPTCP
      connection, similar to TCP RST in regular TCP)
 
  - MCTP (Management Component Transport) over serial, as defined by
    DMTF spec DSP0253 - "MCTP Serial Transport Binding".
 
 Driver API
 ----------
 
  - Support timestamping on bond interfaces in active/passive mode.
 
  - Introduce generic phylink link mode validation for drivers which
    don't have any quirks and where MAC capability bits fully express
    what's supported. Allow PCS layer to participate in the validation.
    Convert a number of drivers.
 
  - Add support to set/get size of buffers on the Rx rings and size of
    the tx copybreak buffer via ethtool.
 
  - Support offloading TC actions as first-class citizens rather than
    only as attributes of filters, improve sharing and device resource
    utilization.
 
  - WiFi (mac80211/cfg80211):
    - support forwarding offload (ndo_fill_forward_path)
    - support for background radar detection hardware
    - SA Query Procedures offload on the AP side
 
 New hardware / drivers
 ----------------------
 
  - tsnep - FPGA based TSN endpoint Ethernet MAC used in PLCs with
    real-time requirements for isochronous communication with protocols
    like OPC UA Pub/Sub.
 
  - Qualcomm BAM-DMUX WWAN - driver for data channels of modems
    integrated into many older Qualcomm SoCs, e.g. MSM8916 or
    MSM8974 (qcom_bam_dmux).
 
  - Microchip LAN966x multi-port Gigabit AVB/TSN Ethernet Switch
    driver with support for bridging, VLANs and multicast forwarding
    (lan966x).
 
  - iwlmei driver for co-operating between Intel's WiFi driver and
    Intel's Active Management Technology (AMT) devices.
 
  - mse102x - Vertexcom MSE102x Homeplug GreenPHY chips
 
  - Bluetooth:
    - MediaTek MT7921 SDIO devices
    - Foxconn MT7922A
    - Realtek RTL8852AE
 
 Drivers
 -------
 
  - Significantly improve performance in the datapaths of:
    lan78xx, ax88179_178a, lantiq_xrx200, bnxt.
 
  - Intel Ethernet NICs:
    - igb: support PTP/time PEROUT and EXTTS SDP functions on
      82580/i354/i350 adapters
    - ixgbevf: new PF -> VF mailbox API which avoids the risk of
      mailbox corruption with ESXi
    - iavf: support configuration of VLAN features of finer granularity,
      stacked tags and filtering
    - ice: PTP support for new E822 devices with sub-ns precision
    - ice: support firmware activation without reboot
 
  - Mellanox Ethernet NICs (mlx5):
    - expose control over IRQ coalescing mode (CQE vs EQE) via ethtool
    - support TC forwarding when tunnel encap and decap happen between
      two ports of the same NIC
    - dynamically size and allow disabling various features to save
      resources for running in embedded / SmartNIC scenarios
 
  - Broadcom Ethernet NICs (bnxt):
    - use page frag allocator to improve Rx performance
    - expose control over IRQ coalescing mode (CQE vs EQE) via ethtool
 
  - Other Ethernet NICs:
    - amd-xgbe: add Ryzen 6000 (Yellow Carp) Ethernet support
 
  - Microsoft cloud/virtual NIC (mana):
    - add XDP support (PASS, DROP, TX)
 
  - Mellanox Ethernet switches (mlxsw):
    - initial support for Spectrum-4 ASICs
    - VxLAN with IPv6 underlay
 
  - Marvell Ethernet switches (prestera):
    - support flower flow templates
    - add basic IP forwarding support
 
  - NXP embedded Ethernet switches (ocelot & felix):
    - support Per-Stream Filtering and Policing (PSFP)
    - enable cut-through forwarding between ports by default
    - support FDMA to improve packet Rx/Tx to CPU
 
  - Other embedded switches:
    - hellcreek: improve trapping management (STP and PTP) packets
    - qca8k: support link aggregation and port mirroring
 
  - Qualcomm 802.11ax WiFi (ath11k):
    - qca6390, wcn6855: enable 802.11 power save mode in station mode
    - BSS color change support
    - WCN6855 hw2.1 support
    - 11d scan offload support
    - scan MAC address randomization support
    - full monitor mode, only supported on QCN9074
    - qca6390/wcn6855: report signal and tx bitrate
    - qca6390: rfkill support
    - qca6390/wcn6855: regdb.bin support
 
  - Intel WiFi (iwlwifi):
    - support SAR GEO Offset Mapping (SGOM) and Time-Aware-SAR (TAS)
      in cooperation with the BIOS
    - support for Optimized Connectivity Experience (OCE) scan
    - support firmware API version 68
    - lots of preparatory work for the upcoming Bz device family
 
  - MediaTek WiFi (mt76):
    - Specific Absorption Rate (SAR) support
    - mt7921: 160 MHz channel support
 
  - RealTek WiFi (rtw88):
    - Specific Absorption Rate (SAR) support
    - scan offload
 
  - Other WiFi NICs
    - ath10k: support fetching (pre-)calibration data from nvmem
    - brcmfmac: configure keep-alive packet on suspend
    - wcn36xx: beacon filter support
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmHbkZAACgkQMUZtbf5S
 IruYkQ//XX7BggcwBfukPK83j0dONolClijqKcKR08g4vB5L8GXvv6OErKIWrh4k
 h8JanCH352ZkbCSw3MvFdm825UYQv8vPMd6Qks/LJ4aSKqCuy4MIlAo+yOw4Km3O
 i7++lRfma6DqHHI59wvLjWoxZSPu8lL+rI8UsZ5qMOlnNlGAOXsNrzRjaqQ3FddY
 AMxZeBUtrPqUCCQZFq3U8apkYzUp7CA/3XR9zRcja3uPbrtOV2G+4whRF90qGNWz
 Tm/QvJ9F/Ab292cbhxR4KuaQ3hUhaCQyDjbZk3+FZzZpAVhYTVqcNjny6+yXmbiP
 NXRtwemnl1NlWKMnJM8lEeY48u626tRIkxA/Wtd61uoO5uKUSxfGP+UpUi+DfXbF
 yIw50VQ7L2bpxXP/HjtmhVgZDaWKYyh22Zw4Hp/muMJz0hgUB0KODY3tf2jUWbjJ
 0oEgocWyzhhwMQKqupTDCIaRgIs2ewYr4ZrFDhI3HnHC/vv1VjoPRUPIyxwppD2N
 cXvZb3B1sWK8iX5gCbISGzyU4bB7I0rvJSTU42ueti7n6NqRFZ79qHQpYnnY+JdO
 z1qOwY/d/yWfBoXVKRtRg2qz6CdEt5BQklwAgVEBgrFpf58gp694EwGMb1htY14J
 r/k9bVpmyIFpUnBH2CPMRfBVA3tUTqzyzzFV4AMw40NYLKmhLdo=
 =KLm3
 -----END PGP SIGNATURE-----

Merge tag '5.17-net-next' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core
  ----

   - Defer freeing TCP skbs to the BH handler, whenever possible, or at
     least perform the freeing outside of the socket lock section to
     decrease cross-CPU allocator work and improve latency.

   - Add netdevice refcount tracking to locate sources of netdevice and
     net namespace refcount leaks.

   - Make Tx watchdog less intrusive - avoid pausing Tx and restarting
     all queues from a single CPU removing latency spikes.

   - Various small optimizations throughout the stack from Eric Dumazet.

   - Make netdev->dev_addr[] constant, force modifications to go via
     appropriate helpers to allow us to keep addresses in ordered data
     structures.

   - Replace unix_table_lock with per-hash locks, improving performance
     of bind() calls.

   - Extend skb drop tracepoint with a drop reason.

   - Allow SO_MARK and SO_PRIORITY setsockopt under CAP_NET_RAW.

  BPF
  ---

   - New helpers:
      - bpf_find_vma(), find and inspect VMAs for profiling use cases
      - bpf_loop(), runtime-bounded loop helper trading some execution
        time for much faster (if at all converging) verification
      - bpf_strncmp(), improve performance, avoid compiler flakiness
      - bpf_get_func_arg(), bpf_get_func_ret(), bpf_get_func_arg_cnt()
        for tracing programs, all inlined by the verifier

   - Support BPF relocations (CO-RE) in the kernel loader.

   - Further the support for BTF_TYPE_TAG annotations.

   - Allow access to local storage in sleepable helpers.

   - Convert verifier argument types to a composable form with different
     attributes which can be shared across types (ro, maybe-null).

   - Prepare libbpf for upcoming v1.0 release by cleaning up APIs,
     creating new, extensible ones where missing and deprecating those
     to be removed.

  Protocols
  ---------

   - WiFi (mac80211/cfg80211):
      - notify user space about long "come back in N" AP responses,
        allow it to react to such temporary rejections
      - allow non-standard VHT MCS 10/11 rates
      - use coarse time in airtime fairness code to save CPU cycles

   - Bluetooth:
      - rework of HCI command execution serialization to use a common
        queue and work struct, and improve handling errors reported in
        the middle of a batch of commands
      - rework HCI event handling to use skb_pull_data, avoiding packet
        parsing pitfalls
      - support AOSP Bluetooth Quality Report

   - SMC:
      - support net namespaces, following the RDMA model
      - improve connection establishment latency by pre-clearing buffers
      - introduce TCP ULP for automatic redirection to SMC

   - Multi-Path TCP:
      - support ioctls: SIOCINQ, OUTQ, and OUTQNSD
      - support socket options: IP_TOS, IP_FREEBIND, IP_TRANSPARENT,
        IPV6_FREEBIND, and IPV6_TRANSPARENT, TCP_CORK and TCP_NODELAY
      - support cmsgs: TCP_INQ
      - improvements in the data scheduler (assigning data to subflows)
      - support fastclose option (quick shutdown of the full MPTCP
        connection, similar to TCP RST in regular TCP)

   - MCTP (Management Component Transport) over serial, as defined by
     DMTF spec DSP0253 - "MCTP Serial Transport Binding".

  Driver API
  ----------

   - Support timestamping on bond interfaces in active/passive mode.

   - Introduce generic phylink link mode validation for drivers which
     don't have any quirks and where MAC capability bits fully express
     what's supported. Allow PCS layer to participate in the validation.
     Convert a number of drivers.

   - Add support to set/get size of buffers on the Rx rings and size of
     the tx copybreak buffer via ethtool.

   - Support offloading TC actions as first-class citizens rather than
     only as attributes of filters, improve sharing and device resource
     utilization.

   - WiFi (mac80211/cfg80211):
      - support forwarding offload (ndo_fill_forward_path)
      - support for background radar detection hardware
      - SA Query Procedures offload on the AP side

  New hardware / drivers
  ----------------------

   - tsnep - FPGA based TSN endpoint Ethernet MAC used in PLCs with
     real-time requirements for isochronous communication with protocols
     like OPC UA Pub/Sub.

   - Qualcomm BAM-DMUX WWAN - driver for data channels of modems
     integrated into many older Qualcomm SoCs, e.g. MSM8916 or MSM8974
     (qcom_bam_dmux).

   - Microchip LAN966x multi-port Gigabit AVB/TSN Ethernet Switch driver
     with support for bridging, VLANs and multicast forwarding
     (lan966x).

   - iwlmei driver for co-operating between Intel's WiFi driver and
     Intel's Active Management Technology (AMT) devices.

   - mse102x - Vertexcom MSE102x Homeplug GreenPHY chips

   - Bluetooth:
      - MediaTek MT7921 SDIO devices
      - Foxconn MT7922A
      - Realtek RTL8852AE

  Drivers
  -------

   - Significantly improve performance in the datapaths of: lan78xx,
     ax88179_178a, lantiq_xrx200, bnxt.

   - Intel Ethernet NICs:
      - igb: support PTP/time PEROUT and EXTTS SDP functions on
        82580/i354/i350 adapters
      - ixgbevf: new PF -> VF mailbox API which avoids the risk of
        mailbox corruption with ESXi
      - iavf: support configuration of VLAN features of finer
        granularity, stacked tags and filtering
      - ice: PTP support for new E822 devices with sub-ns precision
      - ice: support firmware activation without reboot

   - Mellanox Ethernet NICs (mlx5):
      - expose control over IRQ coalescing mode (CQE vs EQE) via ethtool
      - support TC forwarding when tunnel encap and decap happen between
        two ports of the same NIC
      - dynamically size and allow disabling various features to save
        resources for running in embedded / SmartNIC scenarios

   - Broadcom Ethernet NICs (bnxt):
      - use page frag allocator to improve Rx performance
      - expose control over IRQ coalescing mode (CQE vs EQE) via ethtool

   - Other Ethernet NICs:
      - amd-xgbe: add Ryzen 6000 (Yellow Carp) Ethernet support

   - Microsoft cloud/virtual NIC (mana):
      - add XDP support (PASS, DROP, TX)

   - Mellanox Ethernet switches (mlxsw):
      - initial support for Spectrum-4 ASICs
      - VxLAN with IPv6 underlay

   - Marvell Ethernet switches (prestera):
      - support flower flow templates
      - add basic IP forwarding support

   - NXP embedded Ethernet switches (ocelot & felix):
      - support Per-Stream Filtering and Policing (PSFP)
      - enable cut-through forwarding between ports by default
      - support FDMA to improve packet Rx/Tx to CPU

   - Other embedded switches:
      - hellcreek: improve trapping management (STP and PTP) packets
      - qca8k: support link aggregation and port mirroring

   - Qualcomm 802.11ax WiFi (ath11k):
      - qca6390, wcn6855: enable 802.11 power save mode in station mode
      - BSS color change support
      - WCN6855 hw2.1 support
      - 11d scan offload support
      - scan MAC address randomization support
      - full monitor mode, only supported on QCN9074
      - qca6390/wcn6855: report signal and tx bitrate
      - qca6390: rfkill support
      - qca6390/wcn6855: regdb.bin support

   - Intel WiFi (iwlwifi):
      - support SAR GEO Offset Mapping (SGOM) and Time-Aware-SAR (TAS)
        in cooperation with the BIOS
      - support for Optimized Connectivity Experience (OCE) scan
      - support firmware API version 68
      - lots of preparatory work for the upcoming Bz device family

   - MediaTek WiFi (mt76):
      - Specific Absorption Rate (SAR) support
      - mt7921: 160 MHz channel support

   - RealTek WiFi (rtw88):
      - Specific Absorption Rate (SAR) support
      - scan offload

   - Other WiFi NICs
      - ath10k: support fetching (pre-)calibration data from nvmem
      - brcmfmac: configure keep-alive packet on suspend
      - wcn36xx: beacon filter support"

* tag '5.17-net-next' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2048 commits)
  tcp: tcp_send_challenge_ack delete useless param `skb`
  net/qla3xxx: Remove useless DMA-32 fallback configuration
  rocker: Remove useless DMA-32 fallback configuration
  hinic: Remove useless DMA-32 fallback configuration
  lan743x: Remove useless DMA-32 fallback configuration
  net: enetc: Remove useless DMA-32 fallback configuration
  cxgb4vf: Remove useless DMA-32 fallback configuration
  cxgb4: Remove useless DMA-32 fallback configuration
  cxgb3: Remove useless DMA-32 fallback configuration
  bnx2x: Remove useless DMA-32 fallback configuration
  et131x: Remove useless DMA-32 fallback configuration
  be2net: Remove useless DMA-32 fallback configuration
  vmxnet3: Remove useless DMA-32 fallback configuration
  bna: Simplify DMA setting
  net: alteon: Simplify DMA setting
  myri10ge: Simplify DMA setting
  qlcnic: Simplify DMA setting
  net: allwinner: Fix print format
  page_pool: remove spinlock in page_pool_refill_alloc_cache()
  amt: fix wrong return type of amt_send_membership_update()
  ...
2022-01-10 19:06:09 -08:00
Ong Boon Leong
eb68db45b7 samples/bpf: xdpsock: Add timestamp for Tx-only operation
It may be useful to add timestamp for Tx packets for continuous or cyclic
transmit operation. The timestamp and sequence ID of a Tx packet are
stored according to pktgen header format. To enable per-packet timestamp,
use -y|--tstamp option. If timestamp is off, pktgen header is not
included in the UDP payload. This means receiving side can use the magic
number for pktgen for differentiation.

The implementation supports both VLAN tagged and untagged option. By
default, the minimum packet size is set at 64B. However, if VLAN tagged
is on (-V), the minimum packet size is increased to 66B just so to fit
the pktgen_hdr size.

Added hex_dump() into the code path just for future cross-checking.
As before, simply change to "#define DEBUG_HEXDUMP 1" to inspect the
accuracy of TX packet.

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211230035447.523177-8-boon.leong.ong@intel.com
2022-01-05 17:53:24 -08:00
Ong Boon Leong
8121e78932 samples/bpf: xdpsock: Add time-out for cleaning Tx
When user sets tx-pkt-count and in case where there are invalid Tx frame,
the complete_tx_only_all() process polls indefinitely. So, this patch
adds a time-out mechanism into the process so that the application
can terminate automatically after it retries 3*polling interval duration.

v1->v2:
 Thanks to Jesper's and Song Liu's suggestion.
 - clean-up git message to remove polling log
 - make the Tx time-out retries configurable with 1s granularity

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211230035447.523177-7-boon.leong.ong@intel.com
2022-01-05 17:53:24 -08:00
Ong Boon Leong
fa24d0b1d5 samples/bpf: xdpsock: Add sched policy and priority support
By default, TX schedule policy is SCHED_OTHER (round-robin time-sharing).
To improve TX cyclic scheduling, we add SCHED_FIFO policy and its priority
by using -W FIFO or --policy=FIFO and -U <PRIO> or --schpri=<PRIO>.

A) From xdpsock --app-stats, for SCHED_OTHER policy:
   $ xdpsock -i eth0 -t -N -z -T 1000 -b 16 -C 100000 -a

                      period     min        ave        max        cycle
   Cyclic TX          1000000    53507      75334      712642     6250

B) For SCHED_FIFO policy and schpri=50:
   $ xdpsock -i eth0 -t -N -z -T 1000 -b 16 -C 100000 -a -W FIFO -U 50

                      period     min        ave        max        cycle
   Cyclic TX          1000000    3699       24859      54397      6250

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211230035447.523177-6-boon.leong.ong@intel.com
2022-01-05 17:53:24 -08:00
Ong Boon Leong
fa0d27a1d5 samples/bpf: xdpsock: Add cyclic TX operation capability
Tx cycle time is in micro-seconds unit. By combining the batch size (-b M)
and Tx cycle time (-T|--tx-cycle N), xdpsock now can transmit batch-size of
packets every N-us periodically. Cyclic TX operation is not applicable if
--poll mode is used.

To transmit 16 packets every 1ms cycle time for total of 100000 packets
silently:
 $ xdpsock -i eth0 -T -N -z -T 1000 -b 16 -C 100000

To print cyclic TX schedule variance stats, use --app-stats|-a:
 $ xdpsock -i eth0 -T -N -z -T 1000 -b 16 -C 100000 -a

 sock0@eth0:0 txonly xdp-drv
                   pps            pkts           0.00
rx                 0              0
tx                 0              100000

                   calls/s        count
rx empty polls     0              0
fill fail polls    0              0
copy tx sendtos    0              0
tx wakeup sendtos  0              6254
opt polls          0              0

                   period     min        ave        max        cycle
Cyclic TX          1000000    53507      75334      712642     6250

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211230035447.523177-5-boon.leong.ong@intel.com
2022-01-05 17:53:24 -08:00
Ong Boon Leong
5a3882542a samples/bpf: xdpsock: Add clockid selection support
User specifies the clock selection by using -w CLOCK or --clock=CLOCK
where CLOCK=[REALTIME, TAI, BOOTTIME, MONOTONIC].

The default CLOCK selection is MONOTONIC.

The implementation of clock selection parsing is borrowed from
iproute2/tc/q_taprio.c

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211230035447.523177-4-boon.leong.ong@intel.com
2022-01-05 17:53:24 -08:00
Ong Boon Leong
6440a6c23f samples/bpf: xdpsock: Add Dest and Src MAC setting for Tx-only operation
To set Dest MAC address (-G|--tx-dmac) only:
 $ xdpsock -i eth0 -t -N -z -G aa:bb:cc:dd:ee:ff

To set Source MAC address (-H|--tx-smac) only:
 $ xdpsock -i eth0 -t -N -z -H 11:22:33:44:55:66

To set both Dest and Source MAC address:
 $ xdpsock -i eth0 -t -N -z -G aa:bb:cc:dd:ee:ff \
   -H 11:22:33:44:55:66

The default Dest and Source MAC address remain the same as before.

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Link: https://lore.kernel.org/bpf/20211230035447.523177-3-boon.leong.ong@intel.com
2022-01-05 17:53:24 -08:00
Ong Boon Leong
2741a0493c samples/bpf: xdpsock: Add VLAN support for Tx-only operation
In multi-queue environment testing, the support for VLAN-tag based
steering is useful. So, this patch adds the capability to add
VLAN tag (VLAN ID and Priority) to the generated Tx frame.

To set the VLAN ID=10 and Priority=2 for Tx only through TxQ=3:
 $ xdpsock -i eth0 -t -N -z -q 3 -V -J 10 -K 2

If VLAN ID (-J) and Priority (-K) is set, it default to
  VLAN ID = 1
  VLAN Priority = 0.

For example, VLAN-tagged Tx only, xdp copy mode through TxQ=1:
 $ xdpsock -i eth0 -t -N -c -q 1 -V

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211230035447.523177-2-boon.leong.ong@intel.com
2022-01-05 17:53:24 -08:00
Jiri Olsa
0daf5cb217 ftrace/samples: Add missing prototypes direct functions
There's another compilation fail (first here [1]) reported by kernel
test robot for W=1 clang build:

  >> samples/ftrace/ftrace-direct-multi-modify.c:7:6: warning: no previous
  prototype for function 'my_direct_func1' [-Wmissing-prototypes]
     void my_direct_func1(unsigned long ip)

Direct functions in ftrace direct sample modules need to have prototypes
defined. They are already global in order to be visible for the inline
assembly, so there's no problem.

The kernel test robot reported just error for ftrace-direct-multi-modify,
but I got same errors also for the rest of the modules touched by this patch.

[1] 67d4f6e3bf ftrace/samples: Add missing prototype for my_direct_func

Link: https://lkml.kernel.org/r/20211219135317.212430-1-jolsa@kernel.org

Reported-by: kernel test robot <lkp@intel.com>
Fixes: e1067a07cf ("ftrace/samples: Add module to test multi direct modify interface")
Fixes: ae0cc3b7e7 ("ftrace/samples: Add a sample module that implements modify_ftrace_direct()")
Fixes: 156473a0ff ("ftrace: Add another example of register_ftrace_direct() use case")
Fixes: b06457c83a ("ftrace: Add sample module that uses register_ftrace_direct()")
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2022-01-05 18:34:50 -05:00
David S. Miller
e63a023489 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says:

====================
pull-request: bpf-next 2021-12-30

The following pull-request contains BPF updates for your *net-next* tree.

We've added 72 non-merge commits during the last 20 day(s) which contain
a total of 223 files changed, 3510 insertions(+), 1591 deletions(-).

The main changes are:

1) Automatic setrlimit in libbpf when bpf is memcg's in the kernel, from Andrii.

2) Beautify and de-verbose verifier logs, from Christy.

3) Composable verifier types, from Hao.

4) bpf_strncmp helper, from Hou.

5) bpf.h header dependency cleanup, from Jakub.

6) get_func_[arg|ret|arg_cnt] helpers, from Jiri.

7) Sleepable local storage, from KP.

8) Extend kfunc with PTR_TO_CTX, PTR_TO_MEM argument support, from Kumar.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-31 14:35:40 +00:00
Greg Kroah-Hartman
fdcee305c0 Coresight changes for v5.17
This pull request includes:
 
 - A patch that uses devm_bitmap_zalloc() instead of the open-coded
 equivalent.
 
 - Work to make coresight complex configuration loadable via modules.
 
 - Some coresight documentation updates.
 
 Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQFPBAABCgA5FiEEeTrpXvBwUkra1RYWo5FxFnwrV6EFAmHAvPMbHG1hdGhpZXUu
 cG9pcmllckBsaW5hcm8ub3JnAAoJEKORcRZ8K1ehlWEH/iwrNuNR398iPScMgSpi
 fGV1vFkajwAPu69VSl2bgcU9kHAujjG4iabv1ZVd5vDaw4xf3Qzh1qOVhzodF7On
 YDLM10UKj5K1pSiCMjWJvPGnlZ77GivBFa3hnvHAoBd6L/Z4k+bgCXxIzI1q7VEY
 RG2CS+A9JvVB3BWYbGOWMP35vrbzSPUWvgarFLDynrAXGIixu4GRIFy/5ERrd8Hv
 BOlc/0aHfKRaOVLRGVimegqNZmnVYwkTitqYyM+CUew6qIexRoJv2LcfmC31v8uF
 x0dxF6Z0KpSUf6q34FzEkN2gMhDWmwEz/qFOP8zfYi587ckKz8UkemF54P2ybol+
 IK4=
 =xBUr
 -----END PGP SIGNATURE-----

Merge tag 'coresight-next-v5.17' of gitolite.kernel.org:pub/scm/linux/kernel/git/coresight/linux into char-misc-next

Mathieu writes:

Coresight changes for v5.17

This pull request includes:

- A patch that uses devm_bitmap_zalloc() instead of the open-coded
equivalent.

- Work to make coresight complex configuration loadable via modules.

- Some coresight documentation updates.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

* tag 'coresight-next-v5.17' of gitolite.kernel.org:pub/scm/linux/kernel/git/coresight/linux:
  coresight: core: Fix typo in a comment
  Documentation: coresight: Update coresight configuration docs
  coresight: configfs: Allow configfs to activate configuration
  coresight: syscfg: Example CoreSight configuration loadable module
  coresight: syscfg: Update load API for config loadable modules
  coresight: configuration: Update API to permit dynamic load/unload
  coresight: configuration: Update API to introduce load owner concept
  Documentation: coresight: Fix documentation issue
  coresight: Use devm_bitmap_zalloc when applicable
2021-12-21 10:07:07 +01:00
Jakub Kicinski
7cd2802d74 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-16 16:13:19 -08:00
Kui-Feng Lee
7490d59268 samples/bpf: Stop using bpf_object__find_program_by_title API.
bpf_object__find_program_by_title is going to be deprecated.
Replace use cases of bpf_object__find_program_by_title in samples/bpf/
with bpf_object__for_each_program.

Signed-off-by: Kui-Feng Lee <kuifeng@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211214035931.1148209-3-kuifeng@fb.com
2021-12-14 14:38:05 -08:00
Jakub Kicinski
be3158290d Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Andrii Nakryiko says:

====================
bpf-next 2021-12-10 v2

We've added 115 non-merge commits during the last 26 day(s) which contain
a total of 182 files changed, 5747 insertions(+), 2564 deletions(-).

The main changes are:

1) Various samples fixes, from Alexander Lobakin.

2) BPF CO-RE support in kernel and light skeleton, from Alexei Starovoitov.

3) A batch of new unified APIs for libbpf, logging improvements, version
   querying, etc. Also a batch of old deprecations for old APIs and various
   bug fixes, in preparation for libbpf 1.0, from Andrii Nakryiko.

4) BPF documentation reorganization and improvements, from Christoph Hellwig
   and Dave Tucker.

5) Support for declarative initialization of BPF_MAP_TYPE_PROG_ARRAY in
   libbpf, from Hengqi Chen.

6) Verifier log fixes, from Hou Tao.

7) Runtime-bounded loops support with bpf_loop() helper, from Joanne Koong.

8) Extend branch record capturing to all platforms that support it,
   from Kajol Jain.

9) Light skeleton codegen improvements, from Kumar Kartikeya Dwivedi.

10) bpftool doc-generating script improvements, from Quentin Monnet.

11) Two libbpf v0.6 bug fixes, from Shuyi Cheng and Vincent Minet.

12) Deprecation warning fix for perf/bpf_counter, from Song Liu.

13) MAX_TAIL_CALL_CNT unification and MIPS build fix for libbpf,
    from Tiezhu Yang.

14) BTF_KING_TYPE_TAG follow-up fixes, from Yonghong Song.

15) Selftests fixes and improvements, from Ilya Leoshkevich, Jean-Philippe
    Brucker, Jiri Olsa, Maxim Mikityanskiy, Tirthendu Sarkar, Yucong Sun,
    and others.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (115 commits)
  libbpf: Add "bool skipped" to struct bpf_map
  libbpf: Fix typo in btf__dedup@LIBBPF_0.0.2 definition
  bpftool: Switch bpf_object__load_xattr() to bpf_object__load()
  selftests/bpf: Remove the only use of deprecated bpf_object__load_xattr()
  selftests/bpf: Add test for libbpf's custom log_buf behavior
  selftests/bpf: Replace all uses of bpf_load_btf() with bpf_btf_load()
  libbpf: Deprecate bpf_object__load_xattr()
  libbpf: Add per-program log buffer setter and getter
  libbpf: Preserve kernel error code and remove kprobe prog type guessing
  libbpf: Improve logging around BPF program loading
  libbpf: Allow passing user log setting through bpf_object_open_opts
  libbpf: Allow passing preallocated log_buf when loading BTF into kernel
  libbpf: Add OPTS-based bpf_btf_load() API
  libbpf: Fix bpf_prog_load() log_buf logic for log_level 0
  samples/bpf: Remove unneeded variable
  bpf: Remove redundant assignment to pointer t
  selftests/bpf: Fix a compilation warning
  perf/bpf_counter: Use bpf_map_create instead of bpf_create_map
  samples: bpf: Fix 'unknown warning group' build warning on Clang
  samples: bpf: Fix xdp_sample_user.o linking with Clang
  ...
====================

Link: https://lore.kernel.org/r/20211210234746.2100561-1-andrii@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-10 15:56:13 -08:00
Jiri Olsa
e1067a07cf ftrace/samples: Add module to test multi direct modify interface
Adding ftrace-direct-multi-modify.ko kernel module that uses
modify_ftrace_direct_multi API. The core functionality is taken
from ftrace-direct-modify.ko kernel module and changed to fit
multi direct interface.

The init function creates kthread that periodically calls
modify_ftrace_direct_multi to change the trampoline address
for the direct ftrace_ops. The ftrace trace_pipe then shows
trace from both trampolines.

Link: https://lkml.kernel.org/r/20211206182032.87248-4-jolsa@kernel.org

Cc: Ingo Molnar <mingo@redhat.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Tested-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-12-09 13:02:44 -05:00
Minghao Chi
ac55b3f00c samples/bpf: Remove unneeded variable
Return value directly instead of taking this in another redundant variable.

Reported-by: Zeal Robot <zealci@zte.com.cm>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211209080051.421844-1-chi.minghao@zte.com.cn
2021-12-09 09:21:45 -08:00
Peter Zijlstra
b17c2baa30 x86: Prepare inline-asm for straight-line-speculation
Replace all ret/retq instructions with ASM_RET in preparation of
making it more than a single instruction.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20211204134907.964635458@infradead.org
2021-12-08 19:23:12 +01:00
Alexander Lobakin
6f670d06e4 samples: bpf: Fix 'unknown warning group' build warning on Clang
Clang doesn't have 'stringop-truncation' group like GCC does, and
complains about it when building samples which use xdp_sample_user
infra:

 samples/bpf/xdp_sample_user.h:48:32: warning: unknown warning group '-Wstringop-truncation', ignored [-Wunknown-warning-option]
 #pragma GCC diagnostic ignored "-Wstringop-truncation"
                                ^
[ repeat ]

Those are harmless, but avoidable when guarding it with ifdef.
I could guard push/pop as well, but this would require one more
ifdef cruft around a single line which I don't think is reasonable.

Fixes: 156f886cf6 ("samples: bpf: Add basic infrastructure for XDP samples")
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/bpf/20211203195004.5803-3-alexandr.lobakin@intel.com
2021-12-06 19:33:44 -08:00
Alexander Lobakin
e64fbcaa7a samples: bpf: Fix xdp_sample_user.o linking with Clang
Clang (13) doesn't get the jokes about specifying libraries to link in
cclags of individual .o objects:

clang-13: warning: -lm: 'linker' input unused [-Wunused-command-line-argument]
[ ... ]
  LD  samples/bpf/xdp_redirect_cpu
  LD  samples/bpf/xdp_redirect_map_multi
  LD  samples/bpf/xdp_redirect_map
  LD  samples/bpf/xdp_redirect
  LD  samples/bpf/xdp_monitor
/usr/bin/ld: samples/bpf/xdp_sample_user.o: in function `sample_summary_print':
xdp_sample_user.c:(.text+0x84c): undefined reference to `floor'
/usr/bin/ld: xdp_sample_user.c:(.text+0x870): undefined reference to `ceil'
/usr/bin/ld: xdp_sample_user.c:(.text+0x8cf): undefined reference to `floor'
/usr/bin/ld: xdp_sample_user.c:(.text+0x8f3): undefined reference to `ceil'
[ more ]

Specify '-lm' as ldflags for all xdp_sample_user.o users in the main
Makefile and remove it from ccflags of ^ in Makefile.target -- just
like it's done for all other samples. This works with all compilers.

Fixes: 6e1051a54e ("samples: bpf: Convert xdp_monitor to XDP samples helper")
Fixes: b926c55d85 ("samples: bpf: Convert xdp_redirect to XDP samples helper")
Fixes: e531a220cc ("samples: bpf: Convert xdp_redirect_cpu to XDP samples helper")
Fixes: bbe65865aa ("samples: bpf: Convert xdp_redirect_map to XDP samples helper")
Fixes: 594a116b2a ("samples: bpf: Convert xdp_redirect_map_multi to XDP samples helper")
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/bpf/20211203195004.5803-2-alexandr.lobakin@intel.com
2021-12-06 19:33:44 -08:00
Masami Hiramatsu
b466b13321 samples/trace_event: Add '__rel_loc' using sample event
Add '__rel_loc' using sample event for testing.
User can use this for testing purpose. There is
no reason to use this macro from the kernel.

Link: https://lkml.kernel.org/r/163757343050.510314.2876529802471645178.stgit@devnote2

Cc: Beau Belgrave <beaub@linux.microsoft.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-12-06 15:37:22 -05:00
Andrii Nakryiko
c58f9815ba samples/bpf: Get rid of deprecated libbpf API uses
Replace deprecated APIs with new ones. Also mute source code using
deprecated AF_XDP (xsk.h). Figuring out what to do with all the AF_XDP
stuff is a separate problem that should be solved with its own set of
changes.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211201232824.3166325-9-andrii@kernel.org
2021-12-02 15:23:40 -08:00
Andrii Nakryiko
527024f7ae samples/bpf: Clean up samples/bpf build failes
Remove xdp_samples_user.o rule redefinition which generates Makefile
warning and instead override TPROGS_CFLAGS. This seems to work fine when
building inside selftests/bpf.

That was one big head-scratcher before I found that generic
Makefile.target hid this surprising specialization for for xdp_samples_user.o.

Main change is to use actual locally installed libbpf headers.

Also drop printk macro re-definition (not even used!).

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211201232824.3166325-8-andrii@kernel.org
2021-12-02 15:23:40 -08:00
Alexander Lobakin
64b5b97b8c samples: bpf: Fix conflicting types in fds_example
Fix the following samples/bpf build error appeared after the
introduction of bpf_map_create() in libbpf:

  CC  samples/bpf/fds_example.o
samples/bpf/fds_example.c:49:12: error: static declaration of 'bpf_map_create' follows non-static declaration
static int bpf_map_create(void)
           ^
samples/bpf/libbpf/include/bpf/bpf.h:55:16: note: previous declaration is here
LIBBPF_API int bpf_map_create(enum bpf_map_type map_type,
               ^
samples/bpf/fds_example.c:82:23: error: too few arguments to function call, expected 6, have 0
                fd = bpf_map_create();
                     ~~~~~~~~~~~~~~ ^
samples/bpf/libbpf/include/bpf/bpf.h:55:16: note: 'bpf_map_create' declared here
LIBBPF_API int bpf_map_create(enum bpf_map_type map_type,
               ^
2 errors generated.

fds_example by accident has a static function with the same name.
It's not worth it to separate a single call into its own function,
so just embed it.

Fixes: 992c422541 ("libbpf: Unify low-level map creation APIs w/ new bpf_map_create()")
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20211201164931.47357-1-alexandr.lobakin@intel.com
2021-12-01 14:29:56 -08:00
Mike Leach
ede5bab874 coresight: syscfg: Example CoreSight configuration loadable module
An example of creating a loadable module to add CoreSight configurations
into a system.

In the Kernel samples/coresight directory.

Signed-off-by: Mike Leach <mike.leach@linaro.org>
Link: https://lore.kernel.org/r/20211124200038.28662-5-mike.leach@linaro.org
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2021-11-26 11:34:07 -07:00
Linus Torvalds
6b38e2fb70 s390 updates for 5.16-rc2
- Add missing Kconfig option for ftrace direct multi sample, so it can
   be compiled again, and also add s390 support for this sample.
 
 - Update Christian Borntraeger's email address.
 
 - Various fixes for memory layout setup. Besides other this makes it
   possible to load shared DCSS segments again.
 
 - Fix copy to user space of swapped kdump oldmem.
 
 - Remove -mstack-guard and -mstack-size compile options when building
   vdso binaries. This can happen when CONFIG_VMAP_STACK is disabled
   and results in broken vdso code which causes more or less random
   exceptions. Also remove the not needed -nostdlib option.
 
 - Fix memory leak on cpu hotplug and return code handling in kexec
   code.
 
 - Wire up futex_waitv system call.
 
 - Replace snprintf with sysfs_emit where appropriate.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEECMNfWEw3SLnmiLkZIg7DeRspbsIFAmGZBmIACgkQIg7DeRsp
 bsLevQ//XfCEcvJ1sB4OEiN97xyy5me4FoOo5rWuzG/ZN/YmUH0CkzJHIhjDcCg3
 2FslxH5doOA3zLEBCQKXtcW4uaLSgJcqDgFgpE0TZk/6VKB9RD5q2eSjd+akFMGh
 HFge54pfgpR7pYYwWRvbqOJRyzkU5oHAjMmt2UweOoX3qwynhMhTrT/03Y9pGMgK
 VBHhp+ocfdLGQk3nbehAWsh7AWItWwOtKblsTFoyJ6BW0pxb7Yc6+wrpyxLYCaRK
 rCbyXDStvDqjeBSdx2GZDrA7HbVsrZTHA7sSStIW8yIss1/YJXTP0J2PMXmYNbeE
 ou2WCg/iti1DNwN7AOR0OdPu1NfPQkyW6NmV8814Haa8Ub3GUc6RCo+U4wlCXAbo
 ZcHWlb8sgWgfQMzho3WfgkeXuEohO+nOV/x/JFt+NFcwidNTQKO7FQ8GsyylUcYo
 fBhElbn7p44eS1ivMFEwzptBbpH1JVbb30iV7tMWxyjJQ9TkzpsC3Ph14JimSChk
 oZuUnmgMztss/ikEMFcDLhd3DNedXfz10Boq6FucD8x46cW5j7o0scwIomcNtxmx
 C3Y9JCsDdiXAfS6Et6KGbsuWbigT3NjNKETK0+Be65GYNP/NPD5pXLeKywU++cHe
 e+Lucqiej9polcGN3X97lORMDEx0dXpGkM6ZK2rtX66e7rBbB7M=
 =n7BA
 -----END PGP SIGNATURE-----

Merge tag 's390-5.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

 - Add missing Kconfig option for ftrace direct multi sample, so it can
   be compiled again, and also add s390 support for this sample.

 - Update Christian Borntraeger's email address.

 - Various fixes for memory layout setup. Besides other this makes it
   possible to load shared DCSS segments again.

 - Fix copy to user space of swapped kdump oldmem.

 - Remove -mstack-guard and -mstack-size compile options when building
   vdso binaries. This can happen when CONFIG_VMAP_STACK is disabled and
   results in broken vdso code which causes more or less random
   exceptions. Also remove the not needed -nostdlib option.

 - Fix memory leak on cpu hotplug and return code handling in kexec
   code.

 - Wire up futex_waitv system call.

 - Replace snprintf with sysfs_emit where appropriate.

* tag 's390-5.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  ftrace/samples: add s390 support for ftrace direct multi sample
  ftrace/samples: add missing Kconfig option for ftrace direct multi sample
  MAINTAINERS: update email address of Christian Borntraeger
  s390/kexec: fix memory leak of ipl report buffer
  s390/kexec: fix return code handling
  s390/dump: fix copying to user-space of swapped kdump oldmem
  s390: wire up sys_futex_waitv system call
  s390/vdso: filter out -mstack-guard and -mstack-size
  s390/vdso: remove -nostdlib compiler flag
  s390: replace snprintf in show functions with sysfs_emit
  s390/boot: simplify and fix kernel memory layout setup
  s390/setup: re-arrange memblock setup
  s390/setup: avoid using memblock_enforce_memory_limit
  s390/setup: avoid reserving memory above identity mapping
2021-11-20 10:55:50 -08:00
Heiko Carstens
890e3dc8bb ftrace/samples: add s390 support for ftrace direct multi sample
Add s390 architecture support for the ftrace direct multi sample.
See commit 5fae941b9a ("ftrace/samples: Add multi direct interface
test module") for further details.

Link: https://lore.kernel.org/r/20211115195614.3173346-3-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-11-18 17:50:54 +01:00
Heiko Carstens
503e451084 ftrace/samples: add missing Kconfig option for ftrace direct multi sample
Currently it is not possible to build the ftrace direct multi example
anymore due to broken config dependencies. Fix this by adding
SAMPLE_FTRACE_DIRECT_MULTI config option.

This broke when merging s390-5.16-1 due to an incorrect merge conflict
resolution proposed by me.

Also rename SAMPLE_FTRACE_MULTI_DIRECT to SAMPLE_FTRACE_DIRECT_MULTI
so it matches the module name.

Fixes: 0b707e572a ("Merge tag 's390-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux")
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20211115195614.3173346-2-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-11-18 17:50:54 +01:00
Alexander Lobakin
6060a6cb05 samples/bpf: Fix build error due to -isystem removal
Since recent Kbuild updates we no longer include files from compiler
directories. However, samples/bpf/hbm_kern.h hasn't been tuned for
this (LLVM 13):

  CLANG-bpf  samples/bpf/hbm_out_kern.o
In file included from samples/bpf/hbm_out_kern.c:55:
samples/bpf/hbm_kern.h:12:10: fatal error: 'stddef.h' file not found
         ^~~~~~~~~~
1 error generated.
  CLANG-bpf  samples/bpf/hbm_edt_kern.o
In file included from samples/bpf/hbm_edt_kern.c:53:
samples/bpf/hbm_kern.h:12:10: fatal error: 'stddef.h' file not found
         ^~~~~~~~~~
1 error generated.

It is enough to just drop both stdbool.h and stddef.h from includes
to fix those.

Fixes: 04e85bbf71 ("isystem: delete global -isystem compile option")
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Link: https://lore.kernel.org/bpf/20211115130741.3584-1-alexandr.lobakin@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2021-11-15 20:37:20 -08:00
Kumar Kartikeya Dwivedi
2453afe384 samples/bpf: Fix incorrect use of strlen in xdp_redirect_cpu
Commit b599015f04 ("samples/bpf: Fix application of sizeof to pointer")
tried to fix a bug where sizeof was incorrectly applied to a pointer instead
of the array string was being copied to, to find the destination buffer size,
but ended up using strlen, which is still incorrect. However, on closer look
ifname_buf has no other use, hence directly use optarg.

Fixes: b599015f04 ("samples/bpf: Fix application of sizeof to pointer")
Fixes: e531a220cc ("samples: bpf: Convert xdp_redirect_cpu to XDP samples helper")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Tested-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Link: https://lore.kernel.org/bpf/20211112020301.528357-1-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2021-11-12 17:23:16 -08:00
Alexander Lobakin
dc14ca4644 samples/bpf: Fix summary per-sec stats in xdp_sample_user
sample_summary_print() uses accumulated period to calculate and display
per-sec averages. This period gets incremented by sampling interval each
time a new sample is formed, and thus equals to the number of samples
collected multiplied by this interval.

However, the totals are being calculated differently, they receive current
sample statistics already divided by the interval gotten as a difference
between sample timestamps for better precision -- in other words, they are
being incremented by the per-sec values each sample.

This leads to the excessive division of summary per-secs when interval != 1
sec. It is obvious pps couldn't become two times lower just from picking a
different sampling interval value:

  $ samples/bpf/xdp_redirect_cpu -p xdp_prognum_n1_inverse_qnum -c all
    -s -d 6 -i 1
  < snip >
    Packets received    : 2,197,230,321
    Average packets/s   : 22,887,816
    Packets redirected  : 2,197,230,472
    Average redir/s     : 22,887,817
  $ samples/bpf/xdp_redirect_cpu -p xdp_prognum_n1_inverse_qnum -c all
    -s -d 6 -i 2
  < snip >
    Packets received    : 159,566,498
    Average packets/s   : 11,397,607
    Packets redirected  : 159,566,995
    Average redir/s     : 11,397,642

This can be easily fixed by treating the divisor not as a period, but rather
as a total number of samples, and thus incrementing it by 1 instead of
interval. As a nice side effect, we can now remove so-named argument from a
couple of functions. Let us also create an "alias" for sample_output::rx_cnt::pps
named 'num' using a union since this field is used to store this number (period
previously) as well, and the resulting counter-intuitive code might've been a
reason for this bug.

Fixes: 156f886cf6 ("samples: bpf: Add basic infrastructure for XDP samples")
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Reviewed-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/bpf/20211111215703.690-1-alexandr.lobakin@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2021-11-12 17:23:16 -08:00
Linus Torvalds
c107fb9b4f Add gitignore file for samples/fanotify/ subdirectory
Commit 5451093081 ("samples: Add fs error monitoring example") added a
new sample program, but didn't teach git to ignore the new generated
files, causing unnecessary noise from 'git status' after a full build.

Add the 'fs-monitor' sample executable to the .gitignore for this
subdirectory to silence it all again.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-11-07 11:19:24 -08:00
Linus Torvalds
2acda7549e \n
-----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmGFN6IACgkQnJ2qBz9k
 QNkfYwgA1w5x/CsN2IMZdx6FTuZFgbOvQpBMTry8iuOPKK3UyIkZaUirTVLKR0cm
 k3QbBR9/vTfQTNg5weuFJcbPZZaCXKEvlPGvDh+pumMbfTkMwL3FADweNBoZ3PzO
 EiRrV45AbRgSMOzsfURzCz1T53Gd8fYM3pXxmNXG+bnE7+Ea+heKgor8/jFc4U3w
 kAKZTfyCiheo7KxVhFGnkGI3ZhIbnbZne4seY/CE4qtv7/bmBE7bhGpmv8LT5FUn
 h/JBDLjFU0fzJpplXE6n/VHXeGaUwb8adnYpzojWQ0lLYFrMIZFQ0KkDK6PNwmJF
 MKWGqRxDkf54oeWuEAJ9t4/OorqM9A==
 =ltE7
 -----END PGP SIGNATURE-----

Merge tag 'fsnotify_for_v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull fsnotify updates from Jan Kara:
 "Support for reporting filesystem errors through fanotify so that
  system health monitoring daemons can watch for these and act instead
  of scraping system logs"

* tag 'fsnotify_for_v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: (34 commits)
  samples: remove duplicate include in fs-monitor.c
  samples: Fix warning in fsnotify sample
  docs: Fix formatting of literal sections in fanotify docs
  samples: Make fs-monitor depend on libc and headers
  docs: Document the FAN_FS_ERROR event
  samples: Add fs error monitoring example
  ext4: Send notifications on error
  fanotify: Allow users to request FAN_FS_ERROR events
  fanotify: Emit generic error info for error event
  fanotify: Report fid info for file related file system errors
  fanotify: WARN_ON against too large file handles
  fanotify: Add helpers to decide whether to report FID/DFID
  fanotify: Wrap object_fh inline space in a creator macro
  fanotify: Support merging of error events
  fanotify: Support enqueueing of error events
  fanotify: Pre-allocate pool of error events
  fanotify: Reserve UAPI bits for FAN_FS_ERROR
  fsnotify: Support FS_ERROR event type
  fanotify: Require fid_mode for any non-fd event
  fanotify: Encode empty file handle when no inode is provided
  ...
2021-11-06 16:43:20 -07:00
Linus Torvalds
0b707e572a s390 updates for the 5.16 merge window
- Add support for ftrace with direct call and ftrace direct call samples.
 
 - Add support for kernel command lines longer than current 896 bytes and
   make its length configurable.
 
 - Add support for BEAR enhancement facility to improve last breaking
   event instruction tracking.
 
 - Add kprobes sanity checks and testcases to prevent kprobe in the mid
   of an instruction.
 
 - Allow concurrent access to /dev/hwc for the CPUMF users.
 
 - Various ftrace / jump label improvements.
 
 - Convert unwinder tests to KUnit.
 
 - Add s390_iommu_aperture kernel parameter to tweak the limits on
   concurrently usable DMA mappings.
 
 - Add ap.useirq AP module option which can be used to disable interrupt
   use.
 
 - Add add_disk() error handling support to block device drivers.
 
 - Drop arch specific and use generic implementation of strlcpy and strrchr.
 
 - Several __pa/__va usages fixes.
 
 - Various cio, crypto, pci, kernel doc and other small fixes and
   improvements all over the code.
 -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmGFW6EACgkQjYWKoQLX
 FBg20Qf/UbohgnKnE6vxbbH3sNTlI2dk3Cw4z3IobcsZgqXAu6AFLgLQGLk/X07F
 DIyUdrgSgCzLIEKLqrLrFXIOMIK44zAGaurIltNt7IrnWWlA+/YVD+YeL2gHwccq
 wT7KXRcrVMZQ1z18djJQ45DpPUC8ErBdL6+P+ftHck90YGFZsfMA5S7jf8X1h08U
 IlqdPTmY8t4unKHWVpHbxx9b+xrUuV6KTEXADsllpMV2jQoTLdDECd3vmefYR6tR
 3lssgop1m/RzH5OCqvia5Sy2D5fOQObNWDMakwOkVMxOD43lmGCTHstzS2Uo2OFE
 QcY79lfZ5NrzKnenUdE5Fd0XJ9kSwQ==
 =k0Ab
 -----END PGP SIGNATURE-----

Merge tag 's390-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Add support for ftrace with direct call and ftrace direct call
   samples.

 - Add support for kernel command lines longer than current 896 bytes
   and make its length configurable.

 - Add support for BEAR enhancement facility to improve last breaking
   event instruction tracking.

 - Add kprobes sanity checks and testcases to prevent kprobe in the mid
   of an instruction.

 - Allow concurrent access to /dev/hwc for the CPUMF users.

 - Various ftrace / jump label improvements.

 - Convert unwinder tests to KUnit.

 - Add s390_iommu_aperture kernel parameter to tweak the limits on
   concurrently usable DMA mappings.

 - Add ap.useirq AP module option which can be used to disable interrupt
   use.

 - Add add_disk() error handling support to block device drivers.

 - Drop arch specific and use generic implementation of strlcpy and
   strrchr.

 - Several __pa/__va usages fixes.

 - Various cio, crypto, pci, kernel doc and other small fixes and
   improvements all over the code.

[ Merge fixup as per https://lore.kernel.org/all/YXAqZ%2FEszRisunQw@osiris/ ]

* tag 's390-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (63 commits)
  s390: make command line configurable
  s390: support command lines longer than 896 bytes
  s390/kexec_file: move kernel image size check
  s390/pci: add s390_iommu_aperture kernel parameter
  s390/spinlock: remove incorrect kernel doc indicator
  s390/string: use generic strlcpy
  s390/string: use generic strrchr
  s390/ap: function rework based on compiler warning
  s390/cio: make ccw_device_dma_* more robust
  s390/vfio-ap: s390/crypto: fix all kernel-doc warnings
  s390/hmcdrv: fix kernel doc comments
  s390/ap: new module option ap.useirq
  s390/cpumf: Allow multiple processes to access /dev/hwc
  s390/bitops: return true/false (not 1/0) from bool functions
  s390: add support for BEAR enhancement facility
  s390: introduce nospec_uses_trampoline()
  s390: rename last_break to pgm_last_break
  s390/ptrace: add last_break member to pt_regs
  s390/sclp: sort out physical vs virtual pointers usage
  s390/setup: convert start and end initrd pointers to virtual
  ...
2021-11-06 14:48:06 -07:00
Linus Torvalds
5c904c66ed Char/Misc driver update for 5.16-rc1
Here is the big set of char and misc and other tiny driver subsystem
 updates for 5.16-rc1.
 
 Loads of things in here, all of which have been in linux-next for a
 while with no reported problems (except for one called out below.)
 
 Included are:
 	- habanana labs driver updates, including dma_buf usage,
 	  reviewed and acked by the dma_buf maintainers
 	- iio driver update (going through this tree not staging as they
 	  really do not belong going through that tree anymore)
 	- counter driver updates
 	- hwmon driver updates that the counter drivers needed, acked by
 	  the hwmon maintainer
 	- xillybus driver updates
 	- binder driver updates
 	- extcon driver updates
 	- dma_buf module namespaces added (will cause a build error in
 	  arm64 for allmodconfig, but that change is on its way through
 	  the drm tree)
 	- lkdtm driver updates
 	- pvpanic driver updates
 	- phy driver updates
 	- virt acrn and nitr_enclaves driver updates
 	- smaller char and misc driver updates
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYYPX2A8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ymUUgCbB4EKysgLuXYdjUalZDx+vvZO4k0AniS14O4k
 F+2dVSZ5WX6wumUzCaA6
 =bXQM
 -----END PGP SIGNATURE-----

Merge tag 'char-misc-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big set of char and misc and other tiny driver subsystem
  updates for 5.16-rc1.

  Loads of things in here, all of which have been in linux-next for a
  while with no reported problems (except for one called out below.)

  Included are:

   - habanana labs driver updates, including dma_buf usage, reviewed and
     acked by the dma_buf maintainers

   - iio driver update (going through this tree not staging as they
     really do not belong going through that tree anymore)

   - counter driver updates

   - hwmon driver updates that the counter drivers needed, acked by the
     hwmon maintainer

   - xillybus driver updates

   - binder driver updates

   - extcon driver updates

   - dma_buf module namespaces added (will cause a build error in arm64
     for allmodconfig, but that change is on its way through the drm
     tree)

   - lkdtm driver updates

   - pvpanic driver updates

   - phy driver updates

   - virt acrn and nitr_enclaves driver updates

   - smaller char and misc driver updates"

* tag 'char-misc-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (386 commits)
  comedi: dt9812: fix DMA buffers on stack
  comedi: ni_usb6501: fix NULL-deref in command paths
  arm64: errata: Enable TRBE workaround for write to out-of-range address
  arm64: errata: Enable workaround for TRBE overwrite in FILL mode
  coresight: trbe: Work around write to out of range
  coresight: trbe: Make sure we have enough space
  coresight: trbe: Add a helper to determine the minimum buffer size
  coresight: trbe: Workaround TRBE errata overwrite in FILL mode
  coresight: trbe: Add infrastructure for Errata handling
  coresight: trbe: Allow driver to choose a different alignment
  coresight: trbe: Decouple buffer base from the hardware base
  coresight: trbe: Add a helper to pad a given buffer area
  coresight: trbe: Add a helper to calculate the trace generated
  coresight: trbe: Defer the probe on offline CPUs
  coresight: trbe: Fix incorrect access of the sink specific data
  coresight: etm4x: Add ETM PID for Kryo-5XX
  coresight: trbe: Prohibit trace before disabling TRBE
  coresight: trbe: End the AUX handle on truncation
  coresight: trbe: Do not truncate buffer on IRQ
  coresight: trbe: Fix handling of spurious interrupts
  ...
2021-11-04 08:21:47 -07:00
Linus Torvalds
d4ec3d5535 VFIO updates for v5.16-rc1
- Cleanup vfio iommu_group creation (Christoph Hellwig)
 
  - Add individual device reset for vfio/fsl-mc (Diana Craciun)
 
  - IGD OpRegion 2.0+ support (Colin Xu)
 
  - Use modern cdev lifecycle for vfio_group (Jason Gunthorpe)
 
  - Use new mdev API in vfio_ccw (Jason Gunthorpe)
 -----BEGIN PGP SIGNATURE-----
 
 iQJPBAABCAA5FiEEQvbATlQL0amee4qQI5ubbjuwiyIFAmGC6FYbHGFsZXgud2ls
 bGlhbXNvbkByZWRoYXQuY29tAAoJECObm247sIsiFhIP/25BVx3z3WkZl8e5+dOv
 lxrDlEwAxTaxCzERbME+C3x1QWXRqnHOA+ImHEwHxt/CVKDClLXkD4dT5vZnhhzY
 KZIGGz+kQj8dda1Mw2YXN14UzT4b4I400OC26z94nNUZo6v1jvYqnAiPI+hwZyjZ
 ePKdESmEI9WDL6SNnSqhPwbHRGM4aC5UriJUy2SSN8vYBuhZrVmTa+ntnZl98fQy
 0A/3OjdoMDOmPE49TP189qKCMYoEZWOCg2B8n9FME4XG0S+yd3xQyMuFI5SoVBFx
 qr6uJgTAWI7aNwxfbGXBUfyha3w0VfS+rnvXajupwUDudwiipmW6JIFBTu4uaDOB
 koa6fRHBxv9hfcM9eZ/T653tTl20C4oJ00/zdIFrIQlyrSGkTN4DIaNxmlvBgFYi
 UckEYC4yXak5wjXhChx3B+qiEU9gFuUAdN+gWbPZJgcpJmAhjfCjwHnZPI1hHdt2
 NbJCBPPxIsN52J1XQ4ohR7M/wGXXH1XR2j8W6JYBWOdz1lS5QxXho6yFOL597H0Q
 Q/oCcb7paMFiNFhGDKnHPHDInBJcdC+tBTgHkka14+t2X4GkhxATfwgl7YWh9BLr
 u/KkSJKunTTKrb2lsk1q15mxSkCMtFQUWfaTI2ilrpi4NoEZfG3WcdXw+GJ+6faG
 u1+lbKvyYjUAH+gDcRAeWlt1
 =AsTx
 -----END PGP SIGNATURE-----

Merge tag 'vfio-v5.16-rc1' of git://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Cleanup vfio iommu_group creation (Christoph Hellwig)

 - Add individual device reset for vfio/fsl-mc (Diana Craciun)

 - IGD OpRegion 2.0+ support (Colin Xu)

 - Use modern cdev lifecycle for vfio_group (Jason Gunthorpe)

 - Use new mdev API in vfio_ccw (Jason Gunthorpe)

* tag 'vfio-v5.16-rc1' of git://github.com/awilliam/linux-vfio: (27 commits)
  vfio/ccw: Convert to use vfio_register_emulated_iommu_dev()
  vfio/ccw: Pass vfio_ccw_private not mdev_device to various functions
  vfio/ccw: Use functions for alloc/free of the vfio_ccw_private
  vfio/ccw: Remove unneeded GFP_DMA
  vfio: Use cdev_device_add() instead of device_create()
  vfio: Use a refcount_t instead of a kref in the vfio_group
  vfio: Don't leak a group reference if the group already exists
  vfio: Do not open code the group list search in vfio_create_group()
  vfio: Delete vfio_get/put_group from vfio_iommu_group_notifier()
  vfio/pci: Add OpRegion 2.0+ Extended VBT support.
  vfio/iommu_type1: remove IS_IOMMU_CAP_DOMAIN_IN_CONTAINER
  vfio/iommu_type1: remove the "external" domain
  vfio/iommu_type1: initialize pgsize_bitmap in ->open
  vfio/spapr_tce: reject mediated devices
  vfio: clean up the check for mediated device in vfio_iommu_type1
  vfio: remove the unused mdev iommu hook
  vfio: move the vfio_iommu_driver_ops interface out of <linux/vfio.h>
  vfio: remove unused method from vfio_iommu_driver_ops
  vfio: simplify iommu group allocation for mediated devices
  vfio: remove the iommudata hack for noiommu groups
  ...
2021-11-03 13:29:36 -07:00
Linus Torvalds
e1fd0b2acd Second set of tracing updates for 5.16:
- osnoise and timerlat updates that will work with the RTLA tool (Real-Time
   Linux Analysis). Specifically it disconnects the work load (threads
   that look for latency) from the tracing instances attached to them,
   allowing for more than one instance to retrieve data from the work load.
 
 - Optimization on division in the trace histogram trigger code to use shift
   and multiply when possible. Also added documentation.
 
 - Fix prototype to my_direct_func in direct ftrace trampoline sample code.
 -----BEGIN PGP SIGNATURE-----
 
 iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYYKWXxQccm9zdGVkdEBn
 b29kbWlzLm9yZwAKCRAp5XQQmuv6qqJEAP9czpSZ/nFvDjxdGHZAcKKXCFWbGcK5
 IF2cHDDwxXjZ/gD+NnpRhR1JPfA55fO52DUJPn2cOU5xOsP6DmJxu6mwDg0=
 =AKVv
 -----END PGP SIGNATURE-----

Merge tag 'trace-v5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull more tracing updates from Steven Rostedt:

 - osnoise and timerlat updates that will work with the RTLA tool
   (Real-Time Linux Analysis).

   Specifically it disconnects the work load (threads that look for
   latency) from the tracing instances attached to them, allowing for
   more than one instance to retrieve data from the work load.

 - Optimization on division in the trace histogram trigger code to use
   shift and multiply when possible. Also added documentation.

 - Fix prototype to my_direct_func in direct ftrace trampoline sample
   code.

* tag 'trace-v5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace/samples: Add missing prototype for my_direct_func
  tracing/selftests: Add tests for hist trigger expression parsing
  tracing/histogram: Document hist trigger variables
  tracing/histogram: Update division by 0 documentation
  tracing/histogram: Optimize division by constants
  tracing/osnoise: Remove PREEMPT_RT ifdefs from inside functions
  tracing/osnoise: Remove STACKTRACE ifdefs from inside functions
  tracing/osnoise: Allow multiple instances of the same tracer
  tracing/osnoise: Remove TIMERLAT ifdefs from inside functions
  tracing/osnoise: Support a list of trace_array *tr
  tracing/osnoise: Use start/stop_per_cpu_kthreads() on osnoise_cpus_write()
  tracing/osnoise: Split workload start from the tracer start
  tracing/osnoise: Improve comments about barrier need for NMI callbacks
  tracing/osnoise: Do not follow tracing_cpumask
2021-11-03 09:08:47 -07:00
Linus Torvalds
fc02cb2b37 Core:
- Remove socket skb caches
 
  - Add a SO_RESERVE_MEM socket op to forward allocate buffer space
    and avoid memory accounting overhead on each message sent
 
  - Introduce managed neighbor entries - added by control plane and
    resolved by the kernel for use in acceleration paths (BPF / XDP
    right now, HW offload users will benefit as well)
 
  - Make neighbor eviction on link down controllable by userspace
    to work around WiFi networks with bad roaming implementations
 
  - vrf: Rework interaction with netfilter/conntrack
 
  - fq_codel: implement L4S style ce_threshold_ect1 marking
 
  - sch: Eliminate unnecessary RCU waits in mini_qdisc_pair_swap()
 
 BPF:
 
  - Add support for new btf kind BTF_KIND_TAG, arbitrary type tagging
    as implemented in LLVM14
 
  - Introduce bpf_get_branch_snapshot() to capture Last Branch Records
 
  - Implement variadic trace_printk helper
 
  - Add a new Bloomfilter map type
 
  - Track <8-byte scalar spill and refill
 
  - Access hw timestamp through BPF's __sk_buff
 
  - Disallow unprivileged BPF by default
 
  - Document BPF licensing
 
 Netfilter:
 
  - Introduce egress hook for looking at raw outgoing packets
 
  - Allow matching on and modifying inner headers / payload data
 
  - Add NFT_META_IFTYPE to match on the interface type either from
    ingress or egress
 
 Protocols:
 
  - Multi-Path TCP:
    - increase default max additional subflows to 2
    - rework forward memory allocation
    - add getsockopts: MPTCP_INFO, MPTCP_TCPINFO, MPTCP_SUBFLOW_ADDRS
 
  - MCTP flow support allowing lower layer drivers to configure msg
    muxing as needed
 
  - Automatic Multicast Tunneling (AMT) driver based on RFC7450
 
  - HSR support the redbox supervision frames (IEC-62439-3:2018)
 
  - Support for the ip6ip6 encapsulation of IOAM
 
  - Netlink interface for CAN-FD's Transmitter Delay Compensation
 
  - Support SMC-Rv2 eliminating the current same-subnet restriction,
    by exploiting the UDP encapsulation feature of RoCE adapters
 
  - TLS: add SM4 GCM/CCM crypto support
 
  - Bluetooth: initial support for link quality and audio/codec
    offload
 
 Driver APIs:
 
  - Add a batched interface for RX buffer allocation in AF_XDP
    buffer pool
 
  - ethtool: Add ability to control transceiver modules' power mode
 
  - phy: Introduce supported interfaces bitmap to express MAC
    capabilities and simplify PHY code
 
  - Drop rtnl_lock from DSA .port_fdb_{add,del} callbacks
 
 New drivers:
 
  - WiFi driver for Realtek 8852AE 802.11ax devices (rtw89)
 
  - Ethernet driver for ASIX AX88796C SPI device (x88796c)
 
 Drivers:
 
  - Broadcom PHYs
    - support 72165, 7712 16nm PHYs
    - support IDDQ-SR for additional power savings
 
  - PHY support for QCA8081, QCA9561 PHYs
 
  - NXP DPAA2: support for IRQ coalescing
 
  - NXP Ethernet (enetc): support for software TCP segmentation
 
  - Renesas Ethernet (ravb) - support DMAC and EMAC blocks of
    Gigabit-capable IP found on RZ/G2L SoC
 
  - Intel 100G Ethernet
    - support for eswitch offload of TC/OvS flow API, including
      offload of GRE, VxLAN, Geneve tunneling
    - support application device queues - ability to assign Rx and Tx
      queues to application threads
    - PTP and PPS (pulse-per-second) extensions
 
  - Broadcom Ethernet (bnxt)
    - devlink health reporting and device reload extensions
 
  - Mellanox Ethernet (mlx5)
    - offload macvlan interfaces
    - support HW offload of TC rules involving OVS internal ports
    - support HW-GRO and header/data split
    - support application device queues
 
  - Marvell OcteonTx2:
    - add XDP support for PF
    - add PTP support for VF
 
  - Qualcomm Ethernet switch (qca8k): support for QCA8328
 
  - Realtek Ethernet DSA switch (rtl8366rb)
    - support bridge offload
    - support STP, fast aging, disabling address learning
    - support for Realtek RTL8365MB-VC, a 4+1 port 10M/100M/1GE switch
 
  - Mellanox Ethernet/IB switch (mlxsw)
    - multi-level qdisc hierarchy offload (e.g. RED, prio and shaping)
    - offload root TBF qdisc as port shaper
    - support multiple routing interface MAC address prefixes
    - support for IP-in-IP with IPv6 underlay
 
  - MediaTek WiFi (mt76)
    - mt7921 - ASPM, 6GHz, SDIO and testmode support
    - mt7915 - LED and TWT support
 
  - Qualcomm WiFi (ath11k)
    - include channel rx and tx time in survey dump statistics
    - support for 80P80 and 160 MHz bandwidths
    - support channel 2 in 6 GHz band
    - spectral scan support for QCN9074
    - support for rx decapsulation offload (data frames in 802.3
      format)
 
  - Qualcomm phone SoC WiFi (wcn36xx)
    - enable Idle Mode Power Save (IMPS) to reduce power consumption
      during idle
 
  - Bluetooth driver support for MediaTek MT7922 and MT7921
 
  - Enable support for AOSP Bluetooth extension in Qualcomm WCN399x
    and Realtek 8822C/8852A
 
  - Microsoft vNIC driver (mana)
    - support hibernation and kexec
 
  - Google vNIC driver (gve)
    - support for jumbo frames
    - implement Rx page reuse
 
 Refactor:
 
  - Make all writes to netdev->dev_addr go thru helpers, so that we
    can add this address to the address rbtree and handle the updates
 
  - Various TCP cleanups and optimizations including improvements
    to CPU cache use
 
  - Simplify the gnet_stats, Qdisc stats' handling and remove
    qdisc->running sequence counter
 
  - Driver changes and API updates to address devlink locking
    deficiencies
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmGAzX4ACgkQMUZtbf5S
 IrvW3g//Q0ZLrOuHK9pZ8sCXMMhDj8qL6ajm0otMddHWA/+1UglwVBKFhsajfxOf
 wJ/5LZis+XKLpLqKTU5chKVfn39HuDGe/D3l+egi01Gv5BW0+XzEhagfyR5tJX5z
 wsGG5CXO/we/laVSzRiFtwwVEKHKN20YC+tIQwYOYP5Wy3q4G7qDsFhT7GqgsGCS
 n74QUEAIB5Tz0ODWFqLtbsySzIurXrskibwt5T9bvAAlPw/lCU68mmG+NVJ7VddO
 lBbNkLMOo8yW9Ci20H09SrYd4jZTmMARo9tsFO1tAvAMk7qpn0Wd8pnOYTjFFoMD
 +qjiFSVMh7E0JGb8Y7NCvwaB99suAK5rfGP68Xwe62DfP7vYWEx4pZGxBP19F4ld
 6Kn1ME33BX9rUF9tBecf0bdKfJUwB2Q2Xou/b9laG04bwiqsc9iG5FQq1C46lnLZ
 QdzNiS1My4dJMczkWt66HF3Kx30ibwHfvKMIHjf4PqkzEatkv6Y6SBZ57KXL+Lde
 0BQSFhbf0tm2Gf55etzrczLElI3uqHSFWUNZZ2Bt6WmzO1e6tpV9nAtRWF4C/dFg
 QDpLJtOOOY65uq+qz09zoPfv2lem868SrCAuFrVn99bEpYjx/CGNFDeEI02l6jyr
 84eUxd364UcbIk3fc+eTGdXHLQNVk30G0AHVBBxaWNIidwfqXeE=
 =srde
 -----END PGP SIGNATURE-----

Merge tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - Remove socket skb caches

   - Add a SO_RESERVE_MEM socket op to forward allocate buffer space and
     avoid memory accounting overhead on each message sent

   - Introduce managed neighbor entries - added by control plane and
     resolved by the kernel for use in acceleration paths (BPF / XDP
     right now, HW offload users will benefit as well)

   - Make neighbor eviction on link down controllable by userspace to
     work around WiFi networks with bad roaming implementations

   - vrf: Rework interaction with netfilter/conntrack

   - fq_codel: implement L4S style ce_threshold_ect1 marking

   - sch: Eliminate unnecessary RCU waits in mini_qdisc_pair_swap()

  BPF:

   - Add support for new btf kind BTF_KIND_TAG, arbitrary type tagging
     as implemented in LLVM14

   - Introduce bpf_get_branch_snapshot() to capture Last Branch Records

   - Implement variadic trace_printk helper

   - Add a new Bloomfilter map type

   - Track <8-byte scalar spill and refill

   - Access hw timestamp through BPF's __sk_buff

   - Disallow unprivileged BPF by default

   - Document BPF licensing

  Netfilter:

   - Introduce egress hook for looking at raw outgoing packets

   - Allow matching on and modifying inner headers / payload data

   - Add NFT_META_IFTYPE to match on the interface type either from
     ingress or egress

  Protocols:

   - Multi-Path TCP:
      - increase default max additional subflows to 2
      - rework forward memory allocation
      - add getsockopts: MPTCP_INFO, MPTCP_TCPINFO, MPTCP_SUBFLOW_ADDRS

   - MCTP flow support allowing lower layer drivers to configure msg
     muxing as needed

   - Automatic Multicast Tunneling (AMT) driver based on RFC7450

   - HSR support the redbox supervision frames (IEC-62439-3:2018)

   - Support for the ip6ip6 encapsulation of IOAM

   - Netlink interface for CAN-FD's Transmitter Delay Compensation

   - Support SMC-Rv2 eliminating the current same-subnet restriction, by
     exploiting the UDP encapsulation feature of RoCE adapters

   - TLS: add SM4 GCM/CCM crypto support

   - Bluetooth: initial support for link quality and audio/codec offload

  Driver APIs:

   - Add a batched interface for RX buffer allocation in AF_XDP buffer
     pool

   - ethtool: Add ability to control transceiver modules' power mode

   - phy: Introduce supported interfaces bitmap to express MAC
     capabilities and simplify PHY code

   - Drop rtnl_lock from DSA .port_fdb_{add,del} callbacks

  New drivers:

   - WiFi driver for Realtek 8852AE 802.11ax devices (rtw89)

   - Ethernet driver for ASIX AX88796C SPI device (x88796c)

  Drivers:

   - Broadcom PHYs
      - support 72165, 7712 16nm PHYs
      - support IDDQ-SR for additional power savings

   - PHY support for QCA8081, QCA9561 PHYs

   - NXP DPAA2: support for IRQ coalescing

   - NXP Ethernet (enetc): support for software TCP segmentation

   - Renesas Ethernet (ravb) - support DMAC and EMAC blocks of
     Gigabit-capable IP found on RZ/G2L SoC

   - Intel 100G Ethernet
      - support for eswitch offload of TC/OvS flow API, including
        offload of GRE, VxLAN, Geneve tunneling
      - support application device queues - ability to assign Rx and Tx
        queues to application threads
      - PTP and PPS (pulse-per-second) extensions

   - Broadcom Ethernet (bnxt)
      - devlink health reporting and device reload extensions

   - Mellanox Ethernet (mlx5)
      - offload macvlan interfaces
      - support HW offload of TC rules involving OVS internal ports
      - support HW-GRO and header/data split
      - support application device queues

   - Marvell OcteonTx2:
      - add XDP support for PF
      - add PTP support for VF

   - Qualcomm Ethernet switch (qca8k): support for QCA8328

   - Realtek Ethernet DSA switch (rtl8366rb)
      - support bridge offload
      - support STP, fast aging, disabling address learning
      - support for Realtek RTL8365MB-VC, a 4+1 port 10M/100M/1GE switch

   - Mellanox Ethernet/IB switch (mlxsw)
      - multi-level qdisc hierarchy offload (e.g. RED, prio and shaping)
      - offload root TBF qdisc as port shaper
      - support multiple routing interface MAC address prefixes
      - support for IP-in-IP with IPv6 underlay

   - MediaTek WiFi (mt76)
      - mt7921 - ASPM, 6GHz, SDIO and testmode support
      - mt7915 - LED and TWT support

   - Qualcomm WiFi (ath11k)
      - include channel rx and tx time in survey dump statistics
      - support for 80P80 and 160 MHz bandwidths
      - support channel 2 in 6 GHz band
      - spectral scan support for QCN9074
      - support for rx decapsulation offload (data frames in 802.3
        format)

   - Qualcomm phone SoC WiFi (wcn36xx)
      - enable Idle Mode Power Save (IMPS) to reduce power consumption
        during idle

   - Bluetooth driver support for MediaTek MT7922 and MT7921

   - Enable support for AOSP Bluetooth extension in Qualcomm WCN399x and
     Realtek 8822C/8852A

   - Microsoft vNIC driver (mana)
      - support hibernation and kexec

   - Google vNIC driver (gve)
      - support for jumbo frames
      - implement Rx page reuse

  Refactor:

   - Make all writes to netdev->dev_addr go thru helpers, so that we can
     add this address to the address rbtree and handle the updates

   - Various TCP cleanups and optimizations including improvements to
     CPU cache use

   - Simplify the gnet_stats, Qdisc stats' handling and remove
     qdisc->running sequence counter

   - Driver changes and API updates to address devlink locking
     deficiencies"

* tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2122 commits)
  Revert "net: avoid double accounting for pure zerocopy skbs"
  selftests: net: add arp_ndisc_evict_nocarrier
  net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter
  net: arp: introduce arp_evict_nocarrier sysctl parameter
  libbpf: Deprecate AF_XDP support
  kbuild: Unify options for BTF generation for vmlinux and modules
  selftests/bpf: Add a testcase for 64-bit bounds propagation issue.
  bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit.
  bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off.
  net: vmxnet3: remove multiple false checks in vmxnet3_ethtool.c
  net: avoid double accounting for pure zerocopy skbs
  tcp: rename sk_wmem_free_skb
  netdevsim: fix uninit value in nsim_drv_configure_vfs()
  selftests/bpf: Fix also no-alu32 strobemeta selftest
  bpf: Add missing map_delete_elem method to bloom filter map
  selftests/bpf: Add bloom map success test for userspace calls
  bpf: Add alignment padding for "map_extra" + consolidate holes
  bpf: Bloom filter map naming fixups
  selftests/bpf: Add test cases for struct_ops prog
  bpf: Add dummy BPF STRUCT_OPS for test purpose
  ...
2021-11-02 06:20:58 -07:00
Linus Torvalds
79ef0c0014 Tracing updates for 5.16:
- kprobes: Restructured stack unwinder to show properly on x86 when a stack
   dump happens from a kretprobe callback.
 
 - Fix to bootconfig parsing
 
 - Have tracefs allow owner and group permissions by default (only denying
   others). There's been pressure to allow non root to tracefs in a
   controlled fashion, and using groups is probably the safest.
 
 - Bootconfig memory managament updates.
 
 - Bootconfig clean up to have the tools directory be less dependent on
   changes in the kernel tree.
 
 - Allow perf to be traced by function tracer.
 
 - Rewrite of function graph tracer to be a callback from the function tracer
   instead of having its own trampoline (this change will happen on an arch
   by arch basis, and currently only x86_64 implements it).
 
 - Allow multiple direct trampolines (bpf hooks to functions) be batched
   together in one synchronization.
 
 - Allow histogram triggers to add variables that can perform calculations
   against the event's fields.
 
 - Use the linker to determine architecture callbacks from the ftrace
   trampoline to allow for proper parameter prototypes and prevent warnings
   from the compiler.
 
 - Extend histogram triggers to key off of variables.
 
 - Have trace recursion use bit magic to determine preempt context over if
   branches.
 
 - Have trace recursion disable preemption as all use cases do anyway.
 
 - Added testing for verification of tracing utilities.
 
 - Various small clean ups and fixes.
 -----BEGIN PGP SIGNATURE-----
 
 iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYYBdxhQccm9zdGVkdEBn
 b29kbWlzLm9yZwAKCRAp5XQQmuv6qp1sAQD2oYFwaG3sx872gj/myBcHIBSKdiki
 Hry5csd8zYDBpgD+Poylopt5JIbeDuoYw/BedgEXmscZ8Qr7VzjAXdnv/Q4=
 =Loz8
 -----END PGP SIGNATURE-----

Merge tag 'trace-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:

 - kprobes: Restructured stack unwinder to show properly on x86 when a
   stack dump happens from a kretprobe callback.

 - Fix to bootconfig parsing

 - Have tracefs allow owner and group permissions by default (only
   denying others). There's been pressure to allow non root to tracefs
   in a controlled fashion, and using groups is probably the safest.

 - Bootconfig memory managament updates.

 - Bootconfig clean up to have the tools directory be less dependent on
   changes in the kernel tree.

 - Allow perf to be traced by function tracer.

 - Rewrite of function graph tracer to be a callback from the function
   tracer instead of having its own trampoline (this change will happen
   on an arch by arch basis, and currently only x86_64 implements it).

 - Allow multiple direct trampolines (bpf hooks to functions) be batched
   together in one synchronization.

 - Allow histogram triggers to add variables that can perform
   calculations against the event's fields.

 - Use the linker to determine architecture callbacks from the ftrace
   trampoline to allow for proper parameter prototypes and prevent
   warnings from the compiler.

 - Extend histogram triggers to key off of variables.

 - Have trace recursion use bit magic to determine preempt context over
   if branches.

 - Have trace recursion disable preemption as all use cases do anyway.

 - Added testing for verification of tracing utilities.

 - Various small clean ups and fixes.

* tag 'trace-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (101 commits)
  tracing/histogram: Fix semicolon.cocci warnings
  tracing/histogram: Fix documentation inline emphasis warning
  tracing: Increase PERF_MAX_TRACE_SIZE to handle Sentinel1 and docker together
  tracing: Show size of requested perf buffer
  bootconfig: Initialize ret in xbc_parse_tree()
  ftrace: do CPU checking after preemption disabled
  ftrace: disable preemption when recursion locked
  tracing/histogram: Document expression arithmetic and constants
  tracing/histogram: Optimize division by a power of 2
  tracing/histogram: Covert expr to const if both operands are constants
  tracing/histogram: Simplify handling of .sym-offset in expressions
  tracing: Fix operator precedence for hist triggers expression
  tracing: Add division and multiplication support for hist triggers
  tracing: Add support for creating hist trigger variables from literal
  selftests/ftrace: Stop tracing while reading the trace file by default
  MAINTAINERS: Update KPROBES and TRACING entries
  test_kprobes: Move it from kernel/ to lib/
  docs, kprobes: Remove invalid URL and add new reference
  samples/kretprobes: Fix return value if register_kretprobe() failed
  lib/bootconfig: Fix the xbc_get_info kerneldoc
  ...
2021-11-01 20:05:19 -07:00
Jakub Kicinski
b7b98f8689 Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says:

====================
pull-request: bpf-next 2021-11-01

We've added 181 non-merge commits during the last 28 day(s) which contain
a total of 280 files changed, 11791 insertions(+), 5879 deletions(-).

The main changes are:

1) Fix bpf verifier propagation of 64-bit bounds, from Alexei.

2) Parallelize bpf test_progs, from Yucong and Andrii.

3) Deprecate various libbpf apis including af_xdp, from Andrii, Hengqi, Magnus.

4) Improve bpf selftests on s390, from Ilya.

5) bloomfilter bpf map type, from Joanne.

6) Big improvements to JIT tests especially on Mips, from Johan.

7) Support kernel module function calls from bpf, from Kumar.

8) Support typeless and weak ksym in light skeleton, from Kumar.

9) Disallow unprivileged bpf by default, from Pawan.

10) BTF_KIND_DECL_TAG support, from Yonghong.

11) Various bpftool cleanups, from Quentin.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (181 commits)
  libbpf: Deprecate AF_XDP support
  kbuild: Unify options for BTF generation for vmlinux and modules
  selftests/bpf: Add a testcase for 64-bit bounds propagation issue.
  bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit.
  bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off.
  selftests/bpf: Fix also no-alu32 strobemeta selftest
  bpf: Add missing map_delete_elem method to bloom filter map
  selftests/bpf: Add bloom map success test for userspace calls
  bpf: Add alignment padding for "map_extra" + consolidate holes
  bpf: Bloom filter map naming fixups
  selftests/bpf: Add test cases for struct_ops prog
  bpf: Add dummy BPF STRUCT_OPS for test purpose
  bpf: Factor out helpers for ctx access checking
  bpf: Factor out a helper to prepare trampoline for struct_ops prog
  selftests, bpf: Fix broken riscv build
  riscv, libbpf: Add RISC-V (RV64) support to bpf_tracing.h
  tools, build: Add RISC-V to HOSTARCH parsing
  riscv, bpf: Increase the maximum number of iterations
  selftests, bpf: Add one test for sockmap with strparser
  selftests, bpf: Fix test_txmsg_ingress_parser error
  ...
====================

Link: https://lore.kernel.org/r/20211102013123.9005-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-01 19:59:46 -07:00
Jiri Olsa
67d4f6e3bf ftrace/samples: Add missing prototype for my_direct_func
There's compilation fail reported kernel test robot for W=1 build:

  >> samples/ftrace/ftrace-direct-multi.c:8:6: warning: no previous
  prototype for function 'my_direct_func' [-Wmissing-prototypes]
     void my_direct_func(unsigned long ip)

The inlined assembly is used outside function, so we can't make
my_direct_func static and pass it as asm input argument.

However my_tramp is already extern so I think there's no problem
keeping my_direct_func extern as well and just add its prototype.

Link: https://lkml.kernel.org/r/20211101153907.377668-1-jolsa@kernel.org

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 5fae941b9a ("ftrace/samples: Add multi direct interface test module")
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-11-01 20:56:51 -04:00
Zhang Mingyu
15c72660fe samples: remove duplicate include in fs-monitor.c
'sys/types.h' included in 'samples/fanotify/fs-monitor.c'
is duplicated.It is also included on 15 line.

Link: https://lore.kernel.org/r/20211101075152.35780-1-zhang.mingyu@zte.com.cn
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Zhang Mingyu <zhang.mingyu@zte.com.cn>
Signed-off-by: Jan Kara <jack@suse.cz>
2021-11-01 13:17:47 +01:00
Jan Kara
b7eccf75c2 samples: Fix warning in fsnotify sample
The fsnotify sample code generates the following warning on powerpc:

samples/fanotify/fs-monitor.c: In function 'handle_notifications':
samples/fanotify/fs-monitor.c:68:36: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 2 has type '__u64' {aka 'long unsigned int'} [-Wformat=]
   68 |    printf("unexpected FAN MARK: %llx\n", event->mask);
      |                                 ~~~^     ~~~~~~~~~~~
      |                                    |          |
      |                                    |          __u64 {aka long unsigned int}
      |                                    long long unsigned int
      |                                 %lx

Fix the problem by explicitely typing the argument to proper type.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jan Kara <jack@suse.cz>
2021-11-01 12:48:01 +01:00
Gabriel Krisman Bertazi
8fc70b3a14 samples: Make fs-monitor depend on libc and headers
Prevent build errors when headers or libc are not available, such as on
kernel build bots, like the below:

samples/fanotify/fs-monitor.c:7:10: fatal error: errno.h: No such file
or directory
  7 | #include <errno.h>
    |          ^~~~~~~~~

Link: https://lore.kernel.org/r/87fsslasgz.fsf@collabora.com
Suggested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2021-11-01 12:39:53 +01:00
Gabriel Krisman Bertazi
5451093081 samples: Add fs error monitoring example
Introduce an example of a FAN_FS_ERROR fanotify user to track filesystem
errors.

Link: https://lore.kernel.org/r/20211025192746.66445-31-krisman@collabora.com
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2021-10-27 12:53:47 +02:00