Commit graph

5416 commits

Author SHA1 Message Date
Linus Torvalds
89b6b8cd92 VFIO update for v5.15-rc1
- Fix dma-valid return WAITED implementation (Anthony Yznaga)
 
  - SPDX license cleanups (Cai Huoqing)
 
  - Split vfio-pci-core from vfio-pci and enhance PCI driver matching
    to support future vendor provided vfio-pci variants (Yishai Hadas,
    Max Gurtovoy, Jason Gunthorpe)
 
  - Replace duplicated reflck with core support for managing first
    open, last close, and device sets (Jason Gunthorpe, Max Gurtovoy,
    Yishai Hadas)
 
  - Fix non-modular mdev support and don't nag about request callback
    support (Christoph Hellwig)
 
  - Add semaphore to protect instruction intercept handler and replace
    open-coded locks in vfio-ap driver (Tony Krowiak)
 
  - Convert vfio-ap to vfio_register_group_dev() API (Jason Gunthorpe)
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Merge tag 'vfio-v5.15-rc1' of git://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Fix dma-valid return WAITED implementation (Anthony Yznaga)

 - SPDX license cleanups (Cai Huoqing)

 - Split vfio-pci-core from vfio-pci and enhance PCI driver matching to
   support future vendor provided vfio-pci variants (Yishai Hadas, Max
   Gurtovoy, Jason Gunthorpe)

 - Replace duplicated reflck with core support for managing first open,
   last close, and device sets (Jason Gunthorpe, Max Gurtovoy, Yishai
   Hadas)

 - Fix non-modular mdev support and don't nag about request callback
   support (Christoph Hellwig)

 - Add semaphore to protect instruction intercept handler and replace
   open-coded locks in vfio-ap driver (Tony Krowiak)

 - Convert vfio-ap to vfio_register_group_dev() API (Jason Gunthorpe)

* tag 'vfio-v5.15-rc1' of git://github.com/awilliam/linux-vfio: (37 commits)
  vfio/pci: Introduce vfio_pci_core.ko
  vfio: Use kconfig if XX/endif blocks instead of repeating 'depends on'
  vfio: Use select for eventfd
  PCI / VFIO: Add 'override_only' support for VFIO PCI sub system
  PCI: Add 'override_only' field to struct pci_device_id
  vfio/pci: Move module parameters to vfio_pci.c
  vfio/pci: Move igd initialization to vfio_pci.c
  vfio/pci: Split the pci_driver code out of vfio_pci_core.c
  vfio/pci: Include vfio header in vfio_pci_core.h
  vfio/pci: Rename ops functions to fit core namings
  vfio/pci: Rename vfio_pci_device to vfio_pci_core_device
  vfio/pci: Rename vfio_pci_private.h to vfio_pci_core.h
  vfio/pci: Rename vfio_pci.c to vfio_pci_core.c
  vfio/ap_ops: Convert to use vfio_register_group_dev()
  s390/vfio-ap: replace open coded locks for VFIO_GROUP_NOTIFY_SET_KVM notification
  s390/vfio-ap: r/w lock for PQAP interception handler function pointer
  vfio/type1: Fix vfio_find_dma_valid return
  vfio-pci/zdev: Remove repeated verbose license text
  vfio: platform: reset: Convert to SPDX identifier
  vfio: Remove struct vfio_device_ops open/release
  ...
2021-09-02 13:41:33 -07:00
Linus Torvalds
7c314bdfb6 TTY / Serial patches for 5.15-rc1
Here is the "big" set of tty/serial driver patches for 5.15-rc1
 
 Nothing major in here at all, just some driver updates and more cleanups
 on old tty apis and code that needed it that includes:
 	- tty.h cleanup of things that didn't belong in it
 	- other tty cleanups by Jiri
 	- driver cleanups
 	- rs485 support added to amba-pl011 driver
 	- dts updates
 	- stm32 serial driver updates
 	- other minor fixes and driver updates
 
 All have been in linux-next for a while with no reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty / serial updates from Greg KH:
 "Here is the "big" set of tty/serial driver patches for 5.15-rc1

  Nothing major in here at all, just some driver updates and more
  cleanups on old tty apis and code that needed it that includes:

   - tty.h cleanup of things that didn't belong in it

   - other tty cleanups by Jiri

   - driver cleanups

   - rs485 support added to amba-pl011 driver

   - dts updates

   - stm32 serial driver updates

   - other minor fixes and driver updates

  All have been in linux-next for a while with no reported problems"

* tag 'tty-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (83 commits)
  tty: serial: uartlite: Use read_poll_timeout for a polling loop
  tty: serial: uartlite: Use constants in early_uartlite_putc
  tty: Fix data race between tiocsti() and flush_to_ldisc()
  serial: vt8500: Use of_device_get_match_data
  serial: tegra: Use of_device_get_match_data
  serial: 8250_ingenic: Use of_device_get_match_data
  tty: serial: linflexuart: Remove redundant check to simplify the code
  tty: serial: fsl_lpuart: do software reset for imx7ulp and imx8qxp
  tty: serial: fsl_lpuart: enable two stop bits for lpuart32
  tty: serial: fsl_lpuart: fix the wrong mapbase value
  mxser: use semi-colons instead of commas
  tty: moxa: use semi-colons instead of commas
  tty: serial: fsl_lpuart: check dma_tx_in_progress in tx dma callback
  tty: replace in_irq() with in_hardirq()
  serial: sh-sci: fix break handling for sysrq
  serial: stm32: use devm_platform_get_and_ioremap_resource()
  serial: stm32: use the defined variable to simplify code
  Revert "arm pl011 serial: support multi-irq request"
  tty: serial: samsung: Add Exynos850 SoC data
  tty: serial: samsung: Fix driver data macros style
  ...
2021-09-01 09:51:16 -07:00
Linus Torvalds
c6c3c5704b Driver core update for 5.15-rc1
Here is the big set of driver core patches for 5.15-rc1.
 
 These do change a number of different things across different
 subsystems, and because of that, there were 2 stable tags created that
 might have already come into your tree from different pulls that did the
 following
 	- changed the bus remove callback to return void
 	- sysfs iomem_get_mapping rework
 
 The latter one will cause a tiny merge issue with your tree, as there
 was a last-minute fix for this in 5.14 in your tree, but the fixup
 should be "obvious".  If you want me to provide a fixed merge for this,
 please let me know.
 
 Other than those two things, there's only a few small things in here:
 	- kernfs performance improvements for huge numbers of sysfs
 	  users at once
 	- tiny api cleanups
 	- other minor changes
 
 All of these have been in linux-next for a while with no reported
 problems, other than the before-mentioned merge issue.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the big set of driver core patches for 5.15-rc1.

  These do change a number of different things across different
  subsystems, and because of that, there were 2 stable tags created that
  might have already come into your tree from different pulls that did
  the following

   - changed the bus remove callback to return void

   - sysfs iomem_get_mapping rework

  Other than those two things, there's only a few small things in here:

   - kernfs performance improvements for huge numbers of sysfs users at
     once

   - tiny api cleanups

   - other minor changes

  All of these have been in linux-next for a while with no reported
  problems, other than the before-mentioned merge issue"

* tag 'driver-core-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (33 commits)
  MAINTAINERS: Add dri-devel for component.[hc]
  driver core: platform: Remove platform_device_add_properties()
  ARM: tegra: paz00: Handle device properties with software node API
  bitmap: extend comment to bitmap_print_bitmask/list_to_buf
  drivers/base/node.c: use bin_attribute to break the size limitation of cpumap ABI
  topology: use bin_attribute to break the size limitation of cpumap ABI
  lib: test_bitmap: add bitmap_print_bitmask/list_to_buf test cases
  cpumask: introduce cpumap_print_list/bitmask_to_buf to support large bitmask and list
  sysfs: Rename struct bin_attribute member to f_mapping
  sysfs: Invoke iomem_get_mapping() from the sysfs open callback
  debugfs: Return error during {full/open}_proxy_open() on rmmod
  zorro: Drop useless (and hardly used) .driver member in struct zorro_dev
  zorro: Simplify remove callback
  sh: superhyway: Simplify check in remove callback
  nubus: Simplify check in remove callback
  nubus: Make struct nubus_driver::remove return void
  kernfs: dont call d_splice_alias() under kernfs node lock
  kernfs: use i_lock to protect concurrent inode updates
  kernfs: switch kernfs to use an rwsem
  kernfs: use VFS negative dentry caching
  ...
2021-09-01 08:44:42 -07:00
Linus Torvalds
9e9fb7655e Core:
- Enable memcg accounting for various networking objects.
 
 BPF:
 
  - Introduce bpf timers.
 
  - Add perf link and opaque bpf_cookie which the program can read
    out again, to be used in libbpf-based USDT library.
 
  - Add bpf_task_pt_regs() helper to access user space pt_regs
    in kprobes, to help user space stack unwinding.
 
  - Add support for UNIX sockets for BPF sockmap.
 
  - Extend BPF iterator support for UNIX domain sockets.
 
  - Allow BPF TCP congestion control progs and bpf iterators to call
    bpf_setsockopt(), e.g. to switch to another congestion control
    algorithm.
 
 Protocols:
 
  - Support IOAM Pre-allocated Trace with IPv6.
 
  - Support Management Component Transport Protocol.
 
  - bridge: multicast: add vlan support.
 
  - netfilter: add hooks for the SRv6 lightweight tunnel driver.
 
  - tcp:
     - enable mid-stream window clamping (by user space or BPF)
     - allow data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD
     - more accurate DSACK processing for RACK-TLP
 
  - mptcp:
     - add full mesh path manager option
     - add partial support for MP_FAIL
     - improve use of backup subflows
     - optimize option processing
 
  - af_unix: add OOB notification support.
 
  - ipv6: add IFLA_INET6_RA_MTU to expose MTU value advertised by
          the router.
 
  - mac80211: Target Wake Time support in AP mode.
 
  - can: j1939: extend UAPI to notify about RX status.
 
 Driver APIs:
 
  - Add page frag support in page pool API.
 
  - Many improvements to the DSA (distributed switch) APIs.
 
  - ethtool: extend IRQ coalesce uAPI with timer reset modes.
 
  - devlink: control which auxiliary devices are created.
 
  - Support CAN PHYs via the generic PHY subsystem.
 
  - Proper cross-chip support for tag_8021q.
 
  - Allow TX forwarding for the software bridge data path to be
    offloaded to capable devices.
 
 Drivers:
 
  - veth: more flexible channels number configuration.
 
  - openvswitch: introduce per-cpu upcall dispatch.
 
  - Add internet mix (IMIX) mode to pktgen.
 
  - Transparently handle XDP operations in the bonding driver.
 
  - Add LiteETH network driver.
 
  - Renesas (ravb):
    - support Gigabit Ethernet IP
 
  - NXP Ethernet switch (sja1105)
    - fast aging support
    - support for "H" switch topologies
    - traffic termination for ports under VLAN-aware bridge
 
  - Intel 1G Ethernet
     - support getcrosststamp() with PCIe PTM (Precision Time
       Measurement) for better time sync
     - support Credit-Based Shaper (CBS) offload, enabling HW traffic
       prioritization and bandwidth reservation
 
  - Broadcom Ethernet (bnxt)
     - support pulse-per-second output
     - support larger Rx rings
 
  - Mellanox Ethernet (mlx5)
     - support ethtool RSS contexts and MQPRIO channel mode
     - support LAG offload with bridging
     - support devlink rate limit API
     - support packet sampling on tunnels
 
  - Huawei Ethernet (hns3):
     - basic devlink support
     - add extended IRQ coalescing support
     - report extended link state
 
  - Netronome Ethernet (nfp):
     - add conntrack offload support
 
  - Broadcom WiFi (brcmfmac):
     - add WPA3 Personal with FT to supported cipher suites
     - support 43752 SDIO device
 
  - Intel WiFi (iwlwifi):
     - support scanning hidden 6GHz networks
     - support for a new hardware family (Bz)
 
  - Xen pv driver:
     - harden netfront against malicious backends
 
  - Qualcomm mobile
     - ipa: refactor power management and enable automatic suspend
     - mhi: move MBIM to WWAN subsystem interfaces
 
 Refactor:
 
  - Ambient BPF run context and cgroup storage cleanup.
 
  - Compat rework for ndo_ioctl.
 
 Old code removal:
 
  - prism54 remove the obsoleted driver, deprecated by the p54 driver.
 
  - wan: remove sbni/granch driver.
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - Enable memcg accounting for various networking objects.

  BPF:

   - Introduce bpf timers.

   - Add perf link and opaque bpf_cookie which the program can read out
     again, to be used in libbpf-based USDT library.

   - Add bpf_task_pt_regs() helper to access user space pt_regs in
     kprobes, to help user space stack unwinding.

   - Add support for UNIX sockets for BPF sockmap.

   - Extend BPF iterator support for UNIX domain sockets.

   - Allow BPF TCP congestion control progs and bpf iterators to call
     bpf_setsockopt(), e.g. to switch to another congestion control
     algorithm.

  Protocols:

   - Support IOAM Pre-allocated Trace with IPv6.

   - Support Management Component Transport Protocol.

   - bridge: multicast: add vlan support.

   - netfilter: add hooks for the SRv6 lightweight tunnel driver.

   - tcp:
       - enable mid-stream window clamping (by user space or BPF)
       - allow data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD
       - more accurate DSACK processing for RACK-TLP

   - mptcp:
       - add full mesh path manager option
       - add partial support for MP_FAIL
       - improve use of backup subflows
       - optimize option processing

   - af_unix: add OOB notification support.

   - ipv6: add IFLA_INET6_RA_MTU to expose MTU value advertised by the
     router.

   - mac80211: Target Wake Time support in AP mode.

   - can: j1939: extend UAPI to notify about RX status.

  Driver APIs:

   - Add page frag support in page pool API.

   - Many improvements to the DSA (distributed switch) APIs.

   - ethtool: extend IRQ coalesce uAPI with timer reset modes.

   - devlink: control which auxiliary devices are created.

   - Support CAN PHYs via the generic PHY subsystem.

   - Proper cross-chip support for tag_8021q.

   - Allow TX forwarding for the software bridge data path to be
     offloaded to capable devices.

  Drivers:

   - veth: more flexible channels number configuration.

   - openvswitch: introduce per-cpu upcall dispatch.

   - Add internet mix (IMIX) mode to pktgen.

   - Transparently handle XDP operations in the bonding driver.

   - Add LiteETH network driver.

   - Renesas (ravb):
       - support Gigabit Ethernet IP

   - NXP Ethernet switch (sja1105):
       - fast aging support
       - support for "H" switch topologies
       - traffic termination for ports under VLAN-aware bridge

   - Intel 1G Ethernet
       - support getcrosststamp() with PCIe PTM (Precision Time
         Measurement) for better time sync
       - support Credit-Based Shaper (CBS) offload, enabling HW traffic
         prioritization and bandwidth reservation

   - Broadcom Ethernet (bnxt)
       - support pulse-per-second output
       - support larger Rx rings

   - Mellanox Ethernet (mlx5)
       - support ethtool RSS contexts and MQPRIO channel mode
       - support LAG offload with bridging
       - support devlink rate limit API
       - support packet sampling on tunnels

   - Huawei Ethernet (hns3):
       - basic devlink support
       - add extended IRQ coalescing support
       - report extended link state

   - Netronome Ethernet (nfp):
       - add conntrack offload support

   - Broadcom WiFi (brcmfmac):
       - add WPA3 Personal with FT to supported cipher suites
       - support 43752 SDIO device

   - Intel WiFi (iwlwifi):
       - support scanning hidden 6GHz networks
       - support for a new hardware family (Bz)

   - Xen pv driver:
       - harden netfront against malicious backends

   - Qualcomm mobile
       - ipa: refactor power management and enable automatic suspend
       - mhi: move MBIM to WWAN subsystem interfaces

  Refactor:

   - Ambient BPF run context and cgroup storage cleanup.

   - Compat rework for ndo_ioctl.

  Old code removal:

   - prism54 remove the obsoleted driver, deprecated by the p54 driver.

   - wan: remove sbni/granch driver"

* tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1715 commits)
  net: Add depends on OF_NET for LiteX's LiteETH
  ipv6: seg6: remove duplicated include
  net: hns3: remove unnecessary spaces
  net: hns3: add some required spaces
  net: hns3: clean up a type mismatch warning
  net: hns3: refine function hns3_set_default_feature()
  ipv6: remove duplicated 'net/lwtunnel.h' include
  net: w5100: check return value after calling platform_get_resource()
  net/mlxbf_gige: Make use of devm_platform_ioremap_resourcexxx()
  net: mdio: mscc-miim: Make use of the helper function devm_platform_ioremap_resource()
  net: mdio-ipq4019: Make use of devm_platform_ioremap_resource()
  fou: remove sparse errors
  ipv4: fix endianness issue in inet_rtm_getroute_build_skb()
  octeontx2-af: Set proper errorcode for IPv4 checksum errors
  octeontx2-af: Fix static code analyzer reported issues
  octeontx2-af: Fix mailbox errors in nix_rss_flowkey_cfg
  octeontx2-af: Fix loop in free and unmap counter
  af_unix: fix potential NULL deref in unix_dgram_connect()
  dpaa2-eth: Replace strlcpy with strscpy
  octeontx2-af: Use NDC TX for transmit packet data
  ...
2021-08-31 16:43:06 -07:00
Linus Torvalds
679369114e for-5.15/block-2021-08-30
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Merge tag 'for-5.15/block-2021-08-30' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:
 "Nothing major in here - lots of good cleanups and tech debt handling,
  which is also evident in the diffstats. In particular:

   - Add disk sequence numbers (Matteo)

   - Discard merge fix (Ming)

   - Relax disk zoned reporting restrictions (Niklas)

   - Bio error handling zoned leak fix (Pavel)

   - Start of proper add_disk() error handling (Luis, Christoph)

   - blk crypto fix (Eric)

   - Non-standard GPT location support (Dmitry)

   - IO priority improvements and cleanups (Damien)o

   - blk-throtl improvements (Chunguang)

   - diskstats_show() stack reduction (Abd-Alrhman)

   - Loop scheduler selection (Bart)

   - Switch block layer to use kmap_local_page() (Christoph)

   - Remove obsolete disk_name helper (Christoph)

   - block_device refcounting improvements (Christoph)

   - Ensure gendisk always has a request queue reference (Christoph)

   - Misc fixes/cleanups (Shaokun, Oliver, Guoqing)"

* tag 'for-5.15/block-2021-08-30' of git://git.kernel.dk/linux-block: (129 commits)
  sg: pass the device name to blk_trace_setup
  block, bfq: cleanup the repeated declaration
  blk-crypto: fix check for too-large dun_bytes
  blk-zoned: allow BLKREPORTZONE without CAP_SYS_ADMIN
  blk-zoned: allow zone management send operations without CAP_SYS_ADMIN
  block: mark blkdev_fsync static
  block: refine the disk_live check in del_gendisk
  mmc: sdhci-tegra: Enable MMC_CAP2_ALT_GPT_TEGRA
  mmc: block: Support alternative_gpt_sector() operation
  partitions/efi: Support non-standard GPT location
  block: Add alternative_gpt_sector() operation
  bio: fix page leak bio_add_hw_page failure
  block: remove CONFIG_DEBUG_BLOCK_EXT_DEVT
  block: remove a pointless call to MINOR() in device_add_disk
  null_blk: add error handling support for add_disk()
  virtio_blk: add error handling support for add_disk()
  block: add error handling for device_add_disk / add_disk
  block: return errors from disk_alloc_events
  block: return errors from blk_integrity_add
  block: call blk_register_queue earlier in device_add_disk
  ...
2021-08-30 18:52:11 -07:00
Linus Torvalds
c7a5238ef6 s390 updates for 5.15 merge window
- Improve ftrace code patching so that stop_machine is not required anymore.
   This requires a small common code patch acked by Steven Rostedt:
   https://lore.kernel.org/linux-s390/20210730220741.4da6fdf6@oasis.local.home/
 
 - Enable KCSAN for s390. This comes with a small common code change to fix a
   compile warning. Acked by Marco Elver:
   https://lore.kernel.org/r/20210729142811.1309391-1-hca@linux.ibm.com
 
 - Add KFENCE support for s390. This also comes with a minimal x86 patch from
   Marco Elver who said also this can be carried via the s390 tree:
   https://lore.kernel.org/linux-s390/YQJdarx6XSUQ1tFZ@elver.google.com/
 
 - More changes to prepare the decompressor for relocation.
 
 - Enable DAT also for CPU restart path.
 
 - Final set of register asm removal patches; leaving only three locations where
   needed and sane.
 
 - Add NNPA, Vector-Packed-Decimal-Enhancement Facility 2, PCI MIO support to
   hwcaps flags.
 
 - Cleanup hwcaps implementation.
 
 - Add new instructions to in-kernel disassembler.
 
 - Various QDIO cleanups.
 
 - Add SCLP debug feature.
 
 - Various other cleanups and improvements all over the place.
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Merge tag 's390-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

 - Improve ftrace code patching so that stop_machine is not required
   anymore. This requires a small common code patch acked by Steven
   Rostedt:

     https://lore.kernel.org/linux-s390/20210730220741.4da6fdf6@oasis.local.home/

 - Enable KCSAN for s390. This comes with a small common code change to
   fix a compile warning. Acked by Marco Elver:

     https://lore.kernel.org/r/20210729142811.1309391-1-hca@linux.ibm.com

 - Add KFENCE support for s390. This also comes with a minimal x86 patch
   from Marco Elver who said also this can be carried via the s390 tree:

     https://lore.kernel.org/linux-s390/YQJdarx6XSUQ1tFZ@elver.google.com/

 - More changes to prepare the decompressor for relocation.

 - Enable DAT also for CPU restart path.

 - Final set of register asm removal patches; leaving only three
   locations where needed and sane.

 - Add NNPA, Vector-Packed-Decimal-Enhancement Facility 2, PCI MIO
   support to hwcaps flags.

 - Cleanup hwcaps implementation.

 - Add new instructions to in-kernel disassembler.

 - Various QDIO cleanups.

 - Add SCLP debug feature.

 - Various other cleanups and improvements all over the place.

* tag 's390-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (105 commits)
  s390: remove SCHED_CORE from defconfigs
  s390/smp: do not use nodat_stack for secondary CPU start
  s390/smp: enable DAT before CPU restart callback is called
  s390: update defconfigs
  s390/ap: fix state machine hang after failure to enable irq
  KVM: s390: generate kvm hypercall functions
  s390/sclp: add tracing of SCLP interactions
  s390/debug: add early tracing support
  s390/debug: fix debug area life cycle
  s390/debug: keep debug data on resize
  s390/diag: make restart_part2 a local label
  s390/mm,pageattr: fix walk_pte_level() early exit
  s390: fix typo in linker script
  s390: remove do_signal() prototype and do_notify_resume() function
  s390/crypto: fix all kernel-doc warnings in vfio_ap_ops.c
  s390/pci: improve DMA translation init and exit
  s390/pci: simplify CLP List PCI handling
  s390/pci: handle FH state mismatch only on disable
  s390/pci: fix misleading rc in clp_set_pci_fn()
  s390/boot: factor out offset_vmlinux_info() function
  ...
2021-08-30 13:07:15 -07:00
Harald Freudenberger
cabebb697c s390/ap: fix state machine hang after failure to enable irq
If for any reason the interrupt enable for an ap queue fails the
state machine run for the queue returned wrong return codes to the
caller. So the caller assumed interrupt support for this queue in
enabled and thus did not re-establish the high resolution timer used
for polling. In the end this let to a hang for the user space process
waiting "forever" for the reply.

This patch reworks these return codes to return correct indications
for the caller to re-establish the timer when a queue runs without
interrupt support.

Please note that this is fixing a wrong behavior after a first
failure (enable interrupt support for the queue) failed. However,
looks like this occasionally happens on KVM systems.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-08-26 20:22:12 +02:00
Jason Gunthorpe
eb0feefd4c vfio/ap_ops: Convert to use vfio_register_group_dev()
This is straightforward conversion, the ap_matrix_mdev is actually serving
as the vfio_device and we can replace all the mdev_get_drvdata()'s with a
simple container_of() or a dev_get_drvdata() for sysfs paths.

Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: kvm@vger.kernel.org
Cc: Christoph Hellwig <hch@lst.de>
Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/0-v4-0203a4ab0596+f7-vfio_ap_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-08-25 12:43:46 -06:00
Peter Oberparleiter
70aa5d3982 s390/sclp: add tracing of SCLP interactions
Add tracing of interactions between the SCLP base driver, firmware and
other drivers to support problem determination in case of SCLP-related
issues.

For that purpose this patch introduces two new s390dbf debug areas:

  - sclp: An abbreviated log of all common interactions
  - sclp_err: A full log of failed or abnormal interactions

Tracing of full SCCB contents can be enabled for the sclp area by
setting its debug level to maximum (6).

Overview of added trace events:

  * Firmware interaction:
    - SRV1: Service call about to be issued
    - SRV2: Service call was issued
    - INT:  Interrupt received

  * Driver interaction:
    - RQAD: Request was added
    - RQOK: Request success
    - RQAB: Request aborted
    - RQTM: Request timed out
    - REG:  Event listener registered
    - UREG: Event listener unregistered
    - EVNT: Event callback
    - STCG: State-change callback

  * Abnormal events:
    - TMO:  A timeout occurred
    - UNEX: Unexpected SCCB completion

  * Other (not traced at default level):
    - SYN1: Synchronous wait start
    - SYN2: Synchronous wait end

Since the SCLP interface is used by console drivers this patch also
moves s390dbf printks outside the critical section protected by debug
area locks to prevent a potential deadlock that would otherwise be
introduced between console_owner --> sclp_lock --> sclp_debug.lock.

Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-08-25 11:03:35 +02:00
Randy Dunlap
0c1abe7c28 s390/crypto: fix all kernel-doc warnings in vfio_ap_ops.c
The 0day bot reported some kernel-doc warnings in this file so clean up
all of the kernel-doc and use proper kernel-doc formatting.
There are no more kernel-doc errors or warnings reported in this file.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Tony Krowiak <akrowiak@linux.ibm.com>
Cc: Halil Pasic <pasic@linux.ibm.com>
Cc: Jason Herne <jjherne@linux.ibm.com>
Cc: Harald Freudenberger <freude@linux.ibm.com>
Cc: linux-s390@vger.kernel.org
Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com>
Link: https://lore.kernel.org/r/20210806050149.9614-1-rdunlap@infradead.org
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-08-25 11:03:34 +02:00
Julian Wiedmann
c42257d640 s390/zcrypt: remove gratuitious NULL check in .remove() callbacks
As .remove() is only called after a successful .probe() call, we can
trust that the drvdata is valid.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-08-25 11:03:33 +02:00
Julian Wiedmann
b5adbbf896 s390/ap: use the common driver-data pointer
The device struct provides a pointer for driver-private data. Use this
in the zcrypt drivers (as vfio_ap already does), and then remove the
custom pointer from the AP device structs.

As really_probe() will always clear the drvdata pointer on error, we
no longer have to do so ourselves.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-08-25 11:03:32 +02:00
Julian Wiedmann
c8c68c5fca s390/ap: use the common device_driver pointer
The device struct itself already contains a pointer to its driver.
Use this consistently, instead of duplicating it.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-08-25 11:03:32 +02:00
Tony Krowiak
86956e7076 s390/vfio-ap: replace open coded locks for VFIO_GROUP_NOTIFY_SET_KVM notification
It was pointed out during an unrelated patch review that locks should not
be open coded - i.e., writing the algorithm of a standard lock in a
function instead of using a lock from the standard library. The setting and
testing of a busy flag and sleeping on a wait_event is the same thing
a lock does. The open coded locks are invisible to lockdep, so potential
locking problems are not detected.

This patch removes the open coded locks used during
VFIO_GROUP_NOTIFY_SET_KVM notification. The busy flag
and wait queue were introduced to resolve a possible circular locking
dependency reported by lockdep when starting a secure execution guest
configured with AP adapters and domains. Reversing the order in which
the kvm->lock mutex and matrix_dev->lock mutex are locked resolves the
issue reported by lockdep, thus enabling the removal of the open coded
locks.

Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Link: https://lore.kernel.org/r/20210823212047.1476436-3-akrowiak@linux.ibm.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-08-24 12:14:05 -06:00
Tony Krowiak
1e753732bd s390/vfio-ap: r/w lock for PQAP interception handler function pointer
The function pointer to the interception handler for the PQAP instruction
can get changed during the interception process. Let's add a
semaphore to struct kvm_s390_crypto to control read/write access to the
function pointer contained therein.

The semaphore must be locked for write access by the vfio_ap device driver
when notified that the KVM pointer has been set or cleared. It must be
locked for read access by the interception framework when the PQAP
instruction is intercepted.

Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Link: https://lore.kernel.org/r/20210823212047.1476436-2-akrowiak@linux.ibm.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-08-24 12:14:05 -06:00
Yufeng Mo
f3ccfda193 ethtool: extend coalesce setting uAPI with CQE mode
In order to support more coalesce parameters through netlink,
add two new parameter kernel_coal and extack for .set_coalesce
and .get_coalesce, then some extra info can return to user with
the netlink API.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-08-24 07:38:29 -07:00
Christoph Hellwig
4a1fa41d30 block: pass a request_queue to __blk_alloc_disk
Pass in a request_queue and assign disk->queue in __blk_alloc_disk to
ensure struct gendisk always has a valid ->queue pointer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210816131910.615153-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-23 12:54:30 -06:00
Christoph Hellwig
a58bd7683f block: remove the minors argument to __alloc_disk_node
This was a leftover from the legacy alloc_disk interface.  Switch
the scsi ULPs and dasd to set ->minors directly like all other
drivers and remove the argument.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>	[dasd]
Link: https://lore.kernel.org/r/20210816131910.615153-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-23 12:54:30 -06:00
Christoph Hellwig
9c2b9dbafc block: remove alloc_disk and alloc_disk_node
Most drivers should use and have been converted to use blk_alloc_disk
and blk_mq_alloc_disk.  Only the scsi ULPs and dasd still allocate
a disk separately from the request_queue, so don't bother with
convenience macros for something that should not see significant
new users and remove these wrappers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210816131910.615153-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-23 12:54:30 -06:00
Alexander Egorenkov
7c0eaa78b9 s390/sclp: reserve memory occupied by sclp early buffer
The memory block occupied by the SCLP early buffer that is allocated
by the decompressor and then handed over to the decompressed kernel,
must be reserved to prevent it from being reused for other purposes.
This is necessary because the SCLP early buffer is still in use
during kernel initialization.

Fixes: f1d3c53237 ("s390/boot: move sclp early buffer from fixed address in asm to C")
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reported-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-08-18 10:01:29 +02:00
Harald Freudenberger
8617bb7400 s390/zcrypt: fix wrong offset index for APKA master key valid state
Tests showed a mismatch between what the CCA tool reports about
the APKA master key state and what's displayed by the zcrypt dd
in sysfs. After some investigation, we found out that the
documentation which was the source for the zcrypt dd implementation
lacks the listing of 3 fields. So this patch now moves the
evaluation of the APKA master key state to the correct offset.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-08-18 10:01:28 +02:00
Julian Wiedmann
9f79b54951 s390/qdio: remove unused support for SLIB parameters
Neither of the two drivers provides any SLIB parameter data, so get rid
of the dead code.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-08-18 10:01:28 +02:00
Julian Wiedmann
44d9a21a19 s390/qdio: consolidate QIB code
Move all QIB-related code into qdio_setup_qib(), and slightly re-order
it according to the order of the struct's fields. This makes it easier
to understand what the QIB actually looks like before we send it to HW.

Also get rid of the qebsm_possible() helper - as 31-bit support is long
gone, the comment doesn't make any sense. And while removing some stale
QIB-related comment, also move the clearing of the QDR into its proper
place.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-08-18 10:01:28 +02:00
Julian Wiedmann
f86991b3a9 s390/qdio: use dev_info() in qdio_print_subchannel_info()
Prefer dev_info() over a raw printk. This also adds the device and
driver names into the output, so that we have:

Before:
    qdio: 0.0.17c0 ZFCP on SC 17 using [...]

After:
    zfcp 0.0.17c0: qdio: ZFCP on SC 17 using [...]

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-08-18 10:01:28 +02:00
Julian Wiedmann
87e225bfa0 s390/qdio: fine-tune the queue sync
Push the sync check from qdio_inspect_queue() down into the two
get_*_buffer_frontier() code paths, where we actually need the sync to
look at the current queue state. This lets us avoid the check when we
know that there is no work on the queue (ie. when q->nr_buf_used is 0).

While at it introduce the qdio_sync_*_queue() helpers, so that we can
avoid the branch on q->is_input_q when we already know the queue type.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-08-18 10:01:28 +02:00
Julian Wiedmann
10376b5350 s390/qdio: clean up SIGA capability tracking
Don't bother with translating the SIGA-related capability bits into
our own internal format, just cache the full qdioac1 field instead.

Also adjust the helper macros so that they take a qdio_irq argument
and can be used everywhere, instead of taking a qdio_q and then
internally dereferencing the parent pointer.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-08-18 10:01:28 +02:00
Julian Wiedmann
e2af48df5c s390/qdio: remove unused sync-after-IRQ infrastructure
The queue processing is fully decoupled from any preceding interrupt,
so we're no longer making any use of the sync-after-IRQ HW capabilities.

And as SIGA-sync is a legacy feature, there's also not much point in
re-designing the driver & qdio-layer code just so that we can
potentially avoid a few syncs. So just remove all the leftover code.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-08-18 10:01:28 +02:00
Julian Wiedmann
eade5f61a5 s390/qdio: use absolute data address in ESTABLISH ccw
Clean up yet another path where HW wants an absolute address, and we've
been implicitly relying on V=R.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-08-18 10:01:27 +02:00
Vineeth Vijayan
d3683c0552 s390/cio: add dev_busid sysfs entry for each subchannel
Introduce dev_busid, which exports the device-id associated with the
io-subchannel (and message-subchannel). The dev_busid indicates that of
the device which may be physically installed on the corrosponding
subchannel. The dev_busid value "none" indicates that the subchannel
is not valid, there is no I/O device currently associated with the
subchannel.

The dev_busid information would be helpful to write device-specific
udev-rules associated with the subchannel. The dev_busid interface would
be available even when the sch is not bound to any driver or if there is
no operational device connected on it. Hence this attribute can be used to
write udev-rules which are specific to the device associated with the
subchannel.

Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-08-18 10:01:27 +02:00
Vineeth Vijayan
cec0c58d34 s390/cio: add rescan functionality on channel subsystem
This patch introduces a new rescan sys-interface for channel-subsystem.
The rescan interface allows the user to invoke an evaluation of all
subchannels defined in the I/O configuration.

The new rescan interface can be found at /sys/devices/css0/rescan
and can be triggered by,

echo > /sys/devices/css0/rescan

Writing to this interface triggers subchannel evaluation. The write
request completes only after scan-related work has completed

This user-invoked subchannel evaluation allows manual recovery in error
situations such as:
 - restart of device discovery after resolution of temporary device
   error
 - inconsistent OS view of subchannel state due to missing state-change
   interrupts (CRWs)

Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-08-18 10:01:27 +02:00
Christoph Hellwig
2b7a811221 dcssblk: use bvec_virt
Use bvec_virt instead of open coding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210804095634.460779-15-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-16 10:50:33 -06:00
Christoph Hellwig
bf5fb875b4 dasd: use bvec_virt
Use bvec_virt instead of open coding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20210804095634.460779-14-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-16 10:50:33 -06:00
Changbin Du
e871ee6941 s390/net: replace in_irq() with in_hardirq()
Replace the obsolete and ambiguos macro in_irq() with new
macro in_hardirq().

Signed-off-by: Changbin Du <changbin.du@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-16 11:15:47 +01:00
Jakub Kicinski
f4083a752a Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Conflicts:

drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h
  9e26680733 ("bnxt_en: Update firmware call to retrieve TX PTP timestamp")
  9e518f2580 ("bnxt_en: 1PPS functions to configure TSIO pins")
  099fdeda65 ("bnxt_en: Event handler for PPS events")

kernel/bpf/helpers.c
include/linux/bpf-cgroup.h
  a2baf4e8bb ("bpf: Fix potentially incorrect results with bpf_get_local_storage()")
  c7603cfa04 ("bpf: Add ambient BPF runtime context stored in current")

drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
  5957cc557d ("net/mlx5: Set all field of mlx5_irq before inserting it to the xarray")
  2d0b41a376 ("net/mlx5: Refcount mlx5_irq with integer")

MAINTAINERS
  7b637cd52f ("MAINTAINERS: fix Microchip CAN BUS Analyzer Tool entry typo")
  7d901a1e87 ("net: phy: add Maxlinear GPY115/21x/24x driver")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-08-13 06:41:22 -07:00
Linus Torvalds
f8e6dfc64f Networking fixes for 5.14-rc6, including fixes from netfilter, bpf,
can and ieee802154.
 
 Current release - regressions:
 
  - r8169: fix ASPM-related link-up regressions
 
  - bridge: fix flags interpretation for extern learn fdb entries
 
  - phy: micrel: fix link detection on ksz87xx switch
 
  - Revert "tipc: Return the correct errno code"
 
  - ptp: fix possible memory leak caused by invalid cast
 
 Current release - new code bugs:
 
  - bpf: add missing bpf_read_[un]lock_trace() for syscall program
 
  - bpf: fix potentially incorrect results with bpf_get_local_storage()
 
  - page_pool: mask the page->signature before the checking, avoid
       dma mapping leaks
 
  - netfilter: nfnetlink_hook: 5 fixes to information in netlink dumps
 
  - bnxt_en: fix firmware interface issues with PTP
 
  - mlx5: Bridge, fix ageing time
 
 Previous releases - regressions:
 
  - linkwatch: fix failure to restore device state across suspend/resume
 
  - bareudp: fix invalid read beyond skb's linear data
 
 Previous releases - always broken:
 
  - bpf: fix integer overflow involving bucket_size
 
  - ppp: fix issues when desired interface name is specified via netlink
 
  - wwan: mhi_wwan_ctrl: fix possible deadlock
 
  - dsa: microchip: ksz8795: fix number of VLAN related bugs
 
  - dsa: drivers: fix broken backpressure in .port_fdb_dump
 
  - dsa: qca: ar9331: make proper initial port defaults
 
 Misc:
 
  - bpf: add lockdown check for probe_write_user helper
 
  - netfilter: conntrack: remove offload_pickup sysctl before 5.14 is out
 
  - netfilter: conntrack: collect all entries in one cycle,
 	      heuristically slow down garbage collection scans
 	      on idle systems to prevent frequent wake ups
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Networking fixes, including fixes from netfilter, bpf, can and
  ieee802154.

  The size of this is pretty normal, but we got more fixes for 5.14
  changes this week than last week. Nothing major but the trend is the
  opposite of what we like. We'll see how the next week goes..

  Current release - regressions:

   - r8169: fix ASPM-related link-up regressions

   - bridge: fix flags interpretation for extern learn fdb entries

   - phy: micrel: fix link detection on ksz87xx switch

   - Revert "tipc: Return the correct errno code"

   - ptp: fix possible memory leak caused by invalid cast

  Current release - new code bugs:

   - bpf: add missing bpf_read_[un]lock_trace() for syscall program

   - bpf: fix potentially incorrect results with bpf_get_local_storage()

   - page_pool: mask the page->signature before the checking, avoid dma
     mapping leaks

   - netfilter: nfnetlink_hook: 5 fixes to information in netlink dumps

   - bnxt_en: fix firmware interface issues with PTP

   - mlx5: Bridge, fix ageing time

  Previous releases - regressions:

   - linkwatch: fix failure to restore device state across
     suspend/resume

   - bareudp: fix invalid read beyond skb's linear data

  Previous releases - always broken:

   - bpf: fix integer overflow involving bucket_size

   - ppp: fix issues when desired interface name is specified via
     netlink

   - wwan: mhi_wwan_ctrl: fix possible deadlock

   - dsa: microchip: ksz8795: fix number of VLAN related bugs

   - dsa: drivers: fix broken backpressure in .port_fdb_dump

   - dsa: qca: ar9331: make proper initial port defaults

  Misc:

   - bpf: add lockdown check for probe_write_user helper

   - netfilter: conntrack: remove offload_pickup sysctl before 5.14 is
     out

   - netfilter: conntrack: collect all entries in one cycle,
     heuristically slow down garbage collection scans on idle systems to
     prevent frequent wake ups"

* tag 'net-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (87 commits)
  vsock/virtio: avoid potential deadlock when vsock device remove
  wwan: core: Avoid returning NULL from wwan_create_dev()
  net: dsa: sja1105: unregister the MDIO buses during teardown
  Revert "tipc: Return the correct errno code"
  net: mscc: Fix non-GPL export of regmap APIs
  net: igmp: increase size of mr_ifc_count
  MAINTAINERS: switch to my OMP email for Renesas Ethernet drivers
  tcp_bbr: fix u32 wrap bug in round logic if bbr_init() called after 2B packets
  net: pcs: xpcs: fix error handling on failed to allocate memory
  net: linkwatch: fix failure to restore device state across suspend/resume
  net: bridge: fix memleak in br_add_if()
  net: switchdev: zero-initialize struct switchdev_notifier_fdb_info emitted by drivers towards the bridge
  net: bridge: fix flags interpretation for extern learn fdb entries
  net: dsa: sja1105: fix broken backpressure in .port_fdb_dump
  net: dsa: lantiq: fix broken backpressure in .port_fdb_dump
  net: dsa: lan9303: fix broken backpressure in .port_fdb_dump
  net: dsa: hellcreek: fix broken backpressure in .port_fdb_dump
  bpf, core: Fix kernel-doc notation
  net: igmp: fix data-race in igmp_ifc_timer_expire()
  net: Fix memory leak in ieee802154_raw_deliver
  ...
2021-08-12 16:24:03 -10:00
Jason Gunthorpe
9b0d6b7e28 vfio/ap,ccw: Fix open/close when multiple device FDs are open
The user can open multiple device FDs if it likes, however these open()
functions call vfio_register_notifier() on some device global
state. Calling vfio_register_notifier() twice in will trigger a WARN_ON
from notifier_chain_register() and the first close will wrongly delete the
notifier and more.

Since these really want the new open/close_device() semantics just change
the functions over.

Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/12-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-08-11 09:50:11 -06:00
Vladimir Oltean
c35b57ceff net: switchdev: zero-initialize struct switchdev_notifier_fdb_info emitted by drivers towards the bridge
The blamed commit added a new field to struct switchdev_notifier_fdb_info,
but did not make sure that all call paths set it to something valid.
For example, a switchdev driver may emit a SWITCHDEV_FDB_ADD_TO_BRIDGE
notifier, and since the 'is_local' flag is not set, it contains junk
from the stack, so the bridge might interpret those notifications as
being for local FDB entries when that was not intended.

To avoid that now and in the future, zero-initialize all
switchdev_notifier_fdb_info structures created by drivers such that all
newly added fields to not need to touch drivers again.

Fixes: 2c4eca3ef7 ("net: bridge: switchdev: include local flag in FDB notifications")
Reported-by: Ido Schimmel <idosch@idosch.org>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Karsten Graul <kgraul@linux.ibm.com>
Link: https://lore.kernel.org/r/20210810115024.1629983-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-08-10 13:22:57 -07:00
Greg Kroah-Hartman
bd935a7b21 Merge 5.14-rc5 into driver-core-next
We need the driver core fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-09 09:03:47 +02:00
Greg Kroah-Hartman
15e580283f Merge 5.14-rc5 into tty-next
We need the tty/serial fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-09 08:52:46 +02:00
Linus Torvalds
6bbf59145c block-5.14-2021-08-07
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Merge tag 'block-5.14-2021-08-07' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A few minor fixes:

   - Fix ldm kernel-doc warning (Bart)

   - Fix adding offset twice for DMA address in n64cart (Christoph)

   - Fix use-after-free in dasd path handling (Stefan)

   - Order kyber insert trace correctly (Vincent)

   - raid1 errored write handling fix (Wei)

   - Fix blk-iolatency queue get failure handling (Yu)"

* tag 'block-5.14-2021-08-07' of git://git.kernel.dk/linux-block:
  kyber: make trace_block_rq call consistent with documentation
  block/partitions/ldm.c: Fix a kernel-doc warning
  blk-iolatency: error out if blk_get_queue() failed in iolatency_set_limit()
  n64cart: fix the dma address in n64cart_do_bvec
  s390/dasd: fix use after free in dasd path handling
  md/raid10: properly indicate failure when ending a failed write request
2021-08-07 10:26:21 -07:00
Alexandra Winter
f7936b7b26 s390/qeth: Update MACs of LEARNING_SYNC device
Update the MAC addresses that are registered with a LEARNING_SYNC qeth
device with the events announced by the attached software bridge.

Typically the LEARNING_SYNC qeth bridge port has an isolated sibling (the
default interface of an 'HiperSockets Converged Interface' (HSCI)). Update
the MACs of isolated siblings as well, to avoid unnecessary flooding in
the attached virtualized switches.

Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-07 09:44:02 +01:00
Alexandra Winter
4e20e73e63 s390/qeth: Switchdev event handler
QETH HiperSockets devices with LEARNING_SYNC capability can be used
to construct a linux bridge with:
2 isolated southbound interfaces:
     a) a default network interface
     b) a LEARNING-SYNC HiperSockets interface
and 1 non-isolated northbound interface. This is called a 'HiperSockets
Converged Interface' (HSCI).
The existing LEARNING_SYNC functionality is used to update the bridge fdb
with MAC addresses that should be sent-out via the HiperSockets interface,
instead of the default network interface.

Add handling of switchdev events SWITCHDEV_FDB_ADD_TO_DEVICE and
SWITCHDEV_FDB_DEL_TO_DEVICE to the qeth LEARNING_SYNC functionality. Thus
if the northbound bridgeport of an HSCI doesn't only have a single static
MAC address, but instead is a learning bridgeport, work is enqueued, so
the HiperSockets virtual switch (that is external to this Linux instance)
can update its fdb.

When BRIDGE is a loadable module, QETH_L2 mustn't be built-in:

drivers/s390/net/qeth_l2_main.o: in function 'qeth_l2_switchdev_event':
drivers/s390/net/qeth_l2_main.c:927: undefined reference to
'br_port_flag_is_set'

Add Kconfig dependency to enforce usable configurations.

Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-07 09:44:02 +01:00
Alexandra Winter
60bb108946 s390/qeth: Register switchdev event handler
Conditionally register a qeth_l2 switchdev_event handler to handle bridge
to device switchdev events, when at least one qeth interface has the
bridgeport attribute LEARNING_SYNC enabled.

Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-07 09:44:02 +01:00
Sebastian Andrzej Siewior
52b6defae7 s390/sclp: replace deprecated CPU-hotplug functions
The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().

Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/r/20210803141621.780504-6-bigeasy@linutronix.de
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-08-05 14:10:53 +02:00
Stefan Haberland
952835edb4 s390/dasd: fix use after free in dasd path handling
When new configuration data is obtained after a path event it is stored
in the per path array. The old data needs to be freed.
The first valid configuration data is also referenced in the device
private structure to identify the device.
When the old per path configuration data was freed the device still
pointed to the already freed data leading to a use after free.

Fix by replacing also the device configuration data with the newly
obtained one before the old data gets freed.

Fixes: 460181217a ("s390/dasd: Store path configuration data during path handling")
Cc: stable@vger.kernel.org # 5.11+
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Link: https://lore.kernel.org/r/20210804151800.4031761-2-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-04 09:20:11 -06:00
Arnd Bergmann
a76053707d dev_ioctl: split out ndo_eth_ioctl
Most users of ndo_do_ioctl are ethernet drivers that implement
the MII commands SIOCGMIIPHY/SIOCGMIIREG/SIOCSMIIREG, or hardware
timestamping with SIOCSHWTSTAMP/SIOCGHWTSTAMP.

Separate these from the few drivers that use ndo_do_ioctl to
implement SIOCBOND, SIOCBR and SIOCWANDEV commands.

This is a purely cosmetic change intended to help readers find
their way through the implementation.

Cc: Doug Ledford <dledford@redhat.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Vivien Didelot <vivien.didelot@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Vladimir Oltean <olteanv@gmail.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-27 20:11:45 +01:00
Arnd Bergmann
18787eeebd qeth: use ndo_siocdevprivate
qeth has both standard MII ioctls and custom SIOCDEVPRIVATE ones,
all of which work correctly with compat user space.

Move the private ones over to the new ndo_siocdevprivate callback.

Cc: Julian Wiedmann <jwi@linux.ibm.com>
Cc: Karsten Graul <kgraul@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-27 20:11:44 +01:00
Jiri Slaby
9f90a4ddef tty: drop put_tty_driver
put_tty_driver() is an alias for tty_driver_kref_put(). There is no need
for two exported identical functions, therefore switch all users of
old put_tty_driver() to new tty_driver_kref_put() and remove the former
for good.

Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Cc: Jens Taprogge <jens.taprogge@taprogge.org>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Scott Branden <scott.branden@broadcom.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: David Lin <dtwlin@gmail.com>
Cc: Johan Hovold <johan@kernel.org>
Cc: Alex Elder <elder@kernel.org>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: David Sterba <dsterba@suse.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Oliver Neukum <oneukum@suse.com>
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Mathias Nyman <mathias.nyman@intel.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Acked-by: Alex Elder <elder@linaro.org>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: David Sterba <dsterba@suse.com>
Acked-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210723074317.32690-8-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-27 12:17:21 +02:00
Jiri Slaby
39b7b42be4 tty: stop using alloc_tty_driver
alloc_tty_driver was deprecated by tty_alloc_driver in commit
7f0bc6a68e (TTY: pass flags to alloc_tty_driver) in 2012.

I never got into eliminating alloc_tty_driver until now. So we still
have two functions for allocating drivers which might be confusing. So
get rid of alloc_tty_driver uses to eliminate it for good in the next
patch.

Note we need to switch return value checking as tty_alloc_driver uses
ERR_PTR. And flags are now a parameter of tty_alloc_driver.

Cc: Richard Henderson <rth@twiddle.net>(odd fixer:ALPHA PORT)
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Cc: Jens Taprogge <jens.taprogge@taprogge.org>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: David Sterba <dsterba@suse.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Oliver Neukum <oneukum@suse.com>
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Johan Hovold <johan@kernel.org>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Acked-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: David Sterba <dsterba@suse.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210723074317.32690-5-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-27 12:17:20 +02:00
Julian Wiedmann
0d374381d0 s390/qdio: remove unused macros
These macros haven't seen any use in a long time. Also note that the
queue_irqs_*() ones wouldn't even compile anymore.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-07-27 09:39:19 +02:00