Commit Graph

611 Commits

Author SHA1 Message Date
Linus Torvalds
66f8e4df00 Merge tag 'ext4_for_linus-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 bug fixes from Ted Ts'o:

 - Fix regression caused by removing CONFIG_EXT3_FS when testing some
   very old defconfigs

 - Avoid a BUG_ON when opening a file on a maliciously corrupted file
   system

 - Avoid mm warnings when freeing a very large orphan file metadata

 - Avoid a theoretical races between metadata writeback and checkpoints
   (it's very hard to hit in practice, since the race requires that the
   writeback take a very long time)

* tag 'ext4_for_linus-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  Use CONFIG_EXT4_FS instead of CONFIG_EXT3_FS in all of the defconfigs
  ext4: free orphan info with kvfree
  ext4: detect invalid INLINE_DATA + EXTENTS flag combination
  ext4, doc: fix and improve directory hash tree description
  ext4: wait for ongoing I/O to complete before freeing blocks
  jbd2: ensure that all ongoing I/O complete before freeing blocks
2025-10-15 07:51:57 -07:00
Theodore Ts'o
c065b6046b Use CONFIG_EXT4_FS instead of CONFIG_EXT3_FS in all of the defconfigs
Commit d6ace46c82 ("ext4: remove obsolete EXT3 config options")
removed the obsolete EXT3_CONFIG options, since it had been over a
decade since fs/ext3 had been removed.  Unfortunately, there were a
number of defconfigs that still used CONFIG_EXT3_FS which the cleanup
commit didn't fix up.  This led to a large number of defconfig test
builds to fail.  Oops.

Fixes: d6ace46c82 ("ext4: remove obsolete EXT3 config options")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2025-10-13 21:50:40 -04:00
Linus Torvalds
6a74422b97 Merge tag 'mips_6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Thomas Bogendoerfer:

 - switch longson32 platform to DT and use MIPS_GENERIC framework

 - cleanups/fixes for lantiq DTs

 - other cleanups and fixes

* tag 'mips_6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (30 commits)
  mips: math-emu: replace deprecated strcpy() in me-debugfs
  MIPS: configs: Consolidate Loongson1 defconfigs
  MIPS: Unify Loongson1 PRID_REV
  MIPS: loongson32: Switch to generic core
  MIPS: loongson: Add built-in DTB support
  MIPS: dts: loongson: Add CQ-T300B board
  MIPS: dts: loongson: Add Smartloong-1C board
  MIPS: dts: loongson: Add LSGZ_1B_DEV board
  MIPS: dts: loongson: Add LS1B-DEMO board
  dt-bindings: mips: loongson: Add LS1B-DEMO and CQ-T300B
  mips: lantiq: danube: rename stp node on EASY50712 reference board
  mips: lantiq: xway: sysctrl: rename stp clock
  MIPS: RB532: Replace deprecated strcpy() with memcpy() and strscpy()
  MIPS: Loongson64: Replace deprecated strcpy() with strscpy_pad()
  MIPS: generic: Replace deprecated strcpy() in ocelot_detect()
  MIPS: octeon: Replace deprecated strcpy() in octeon_model_get_string_buffer()
  MIPS: octeon: Replace memset(0) + deprecated strcpy() with strscpy_pad()
  MIPS: arc: Replace deprecated strcpy() with memcpy()
  MIPS: txx9: Replace deprecated strcpy() with strscpy()
  MIPS: sni: Replace deprecated strcpy() in sni_console_setup()
  ...
2025-10-05 10:09:55 -07:00
Linus Torvalds
d8768fb12a Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library updates from Eric Biggers:

 - Add a RISC-V optimized implementation of Poly1305. This code was
   written by Andy Polyakov and contributed by Zhihang Shao.

 - Migrate the MD5 code into lib/crypto/, and add KUnit tests for MD5.

   Yes, it's still the 90s, and several kernel subsystems are still
   using MD5 for legacy use cases. As long as that remains the case,
   it's helpful to clean it up in the same way as I've been doing for
   other algorithms.

   Later, I plan to convert most of these users of MD5 to use the new
   MD5 library API instead of the generic crypto API.

 - Simplify the organization of the ChaCha, Poly1305, BLAKE2s, and
   Curve25519 code.

   Consolidate these into one module per algorithm, and centralize the
   configuration and build process. This is the same reorganization that
   has already been successful for SHA-1 and SHA-2.

 - Remove the unused crypto_kpp API for Curve25519.

 - Migrate the BLAKE2s and Curve25519 self-tests to KUnit.

 - Always enable the architecture-optimized BLAKE2s code.

* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (38 commits)
  crypto: md5 - Implement export_core() and import_core()
  wireguard: kconfig: simplify crypto kconfig selections
  lib/crypto: tests: Enable Curve25519 test when CRYPTO_SELFTESTS
  lib/crypto: curve25519: Consolidate into single module
  lib/crypto: curve25519: Move a couple functions out-of-line
  lib/crypto: tests: Add Curve25519 benchmark
  lib/crypto: tests: Migrate Curve25519 self-test to KUnit
  crypto: curve25519 - Remove unused kpp support
  crypto: testmgr - Remove curve25519 kpp tests
  crypto: x86/curve25519 - Remove unused kpp support
  crypto: powerpc/curve25519 - Remove unused kpp support
  crypto: arm/curve25519 - Remove unused kpp support
  crypto: hisilicon/hpre - Remove unused curve25519 kpp support
  lib/crypto: tests: Add KUnit tests for BLAKE2s
  lib/crypto: blake2s: Consolidate into single C translation unit
  lib/crypto: blake2s: Move generic code into blake2s.c
  lib/crypto: blake2s: Always enable arch-optimized BLAKE2s code
  lib/crypto: blake2s: Remove obsolete self-test
  lib/crypto: x86/blake2s: Reduce size of BLAKE2S_SIGMA2
  lib/crypto: chacha: Consolidate into single module
  ...
2025-09-29 15:48:56 -07:00
Jakub Kicinski
8b3332c133 Revert "eth: remove the DLink/Sundance (ST201) driver"
This reverts commit 8401a108a6.

I got a report from an (anonymous) Sundance user:

  Ethernet controller: Sundance Technology Inc / IC Plus Corp IC Plus IP100A Integrated 10/100 Ethernet MAC + PHY (rev 31)

Revert the driver back in. Make following changes:
 - update Denis's email address in MAINTAINERS
 - adjust to timer API renames:
   - del_timer_sync() -> timer_delete_sync()
   - from_timer() -> timer_container_of()

Fixes: 8401a108a6 ("eth: remove the DLink/Sundance (ST201) driver")
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250901210818.1025316-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-02 15:49:41 -07:00
Keguang Zhang
ad79935dbc MIPS: configs: Consolidate Loongson1 defconfigs
Unify loongson{1b,1c}_defconfig into a single loongson1_defconfig.

Enable the following options by default:
 - CONFIG_SERIAL_OF_PLATFORM
 - CONFIG_RTC_DRV_LOONGSON
 - CONFIG_LOONGSON1_APB_DMA
 - CONFIG_MTD_NAND_LOONGSON1
 - CONFIG_SND_LOONGSON1_AC97

Also disable unnecessary options.

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:31 +02:00
Eric Biggers
c9e5ac0ab9 lib/crypto: mips/md5: Migrate optimized code into library
Instead of exposing the mips-optimized MD5 code via mips-specific
crypto_shash algorithms, instead just implement the md5_blocks() library
function.  This is much simpler, it makes the MD5 library functions be
mips-optimized, and it fixes the longstanding issue where the
mips-optimized MD5 code was disabled by default.  MD5 still remains
available through crypto_shash, but individual architectures no longer
need to handle it.

Note: to see the diff from arch/mips/cavium-octeon/crypto/octeon-md5.c
to lib/crypto/mips/md5.h, view this commit with 'git show -M10'.

Link: https://lore.kernel.org/r/20250805222855.10362-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2025-08-26 12:52:28 -04:00
Linus Torvalds
7a64bdfaf3 Merge tag 'sound-6.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull more sound updates from Takashi Iwai:
 "For catching up the remaining stuff for 6.17: only small updates and
  the rest are mostly small fixes.

   - Fixes in HD-audio codec driver Kconfig, so that configurations can
     be more easily/safely carried between different versions

   - Fixes in ASoC SDCA, FSL xcvr, AW88399

   - ASoC IMX WM8524 support

   - HD-audio and USB-audio quirks and fixes

   - A minor selftest fix"

* tag 'sound-6.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (21 commits)
  ALSA: usb: scarlett2: Fix missing NULL check
  mips: Update HD-audio configs again
  LoongArch: Update HD-audio codec configs
  arm: Update HD-audio configs again
  selftests: ALSA: fix memory leak in utimer test
  ALSA: usb-audio: Add DSD support for Comtrue USB Audio device
  ALSA: hda/hdmi: Enable drivers as default
  ALSA: hda/cirrus: Enable drivers as default
  ALSA: hda/realtek: Enable drivers as default
  ALSA: hda/realtek - Fix mute LED for HP Victus 16-d1xxx (MB 8A26)
  ALSA: hda/realtek - Fix mute LED for HP Victus 16-s0xxx
  ALSA: hda: Fix the wrong register was used for DVC of TAS2770
  ALSA: scarlett2: Add retry on -EPROTO from scarlett2_usb_tx()
  ALSA: hda/realtek - Fix mute LED for HP Victus 16-r1xxx
  ASoC: codecs: Add acpi_match_table for aw88399 driver
  ASoC: dt-bindings: atmel,at91-ssc: add microchip,sam9x7-ssc
  ASoC: imx-card: Add WM8524 support
  ASoC: fsl_xcvr: get channel status data with firmware exists
  ASoC: fsl_xcvr: get channel status data when PHY is not exists
  ASoC: SDCA: Add support for -cn- value properties
  ...
2025-08-01 12:26:24 -07:00
Linus Torvalds
f1aa129d80 Merge tag 'mips_6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Thomas Bogendoerfer:

 - DT updates for ralink, mobileye and atheros/qualcomm

 - Clean up of mc146818 usage

 - Speed up delay calibration for CPS

 - Other cleanups and fixes

* tag 'mips_6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (50 commits)
  MIPS: Don't use %pK through printk
  MIPS: Update Joshua Kinard's e-mail address
  MIPS: mobileye: dts: eyeq5,eyeq6h: rename the emmc controller
  MIPS: mm: tlb-r4k: Uniquify TLB entries on init
  MIPS: SGI-IP27: Delete an unnecessary check before kfree() in hub_domain_free()
  mips/malta,loongson2ef: use generic mc146818_get_time function
  mips: remove redundant macro mc146818_decode_year
  mips/mach-rm: remove custom mc146818rtc.h file
  mips: remove unused function mc146818_set_rtc_mmss
  MIPS: CPS: Optimise delay CPU calibration for SMP
  MIPS: CPS: Improve mips_cps_first_online_in_cluster()
  MIPS: disable MMID when not supported by the hardware
  MIPS: eyeq5_defconfig: add I2C subsystem, driver and temp sensor driver
  MIPS: eyeq5_defconfig: add GPIO subsystem & driver
  MIPS: mobileye: eyeq5: add two GPIO bank nodes
  MIPS: mobileye: eyeq5: add evaluation board I2C temp sensor
  MIPS: mobileye: eyeq5: add 5 I2C controller nodes
  MIPS: eyeq5_defconfig: Update for v6.16-rc1
  MIPS: vpe-mt: add missing prototypes for vpe_{alloc,start,stop,free}
  mips: boot: use 'targets' instead of extra-y in Makefile
  ...
2025-07-31 11:08:55 -07:00
Takashi Iwai
5e0753df96 mips: Update HD-audio configs again
The HD-audio codec driver configs have been updated again since the
previous change.  Correct the types and enable all Realtek HD-audio
codecs for loongson, per request.

Fixes: 1d8dd982c4 ("ALSA: hda/realtek: Enable drivers as default")
Fixes: 81231ad173 ("ALSA: hda/hdmi: Enable drivers as default")
Cc: linux-mips@vger.kernel.org
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250731091109.16901-4-tiwai@suse.de
2025-07-31 17:03:28 +02:00
Linus Torvalds
8be4d31cb8 Merge tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Wrap datapath globals into net_aligned_data, to avoid false sharing

   - Preserve MSG_ZEROCOPY in forwarding (e.g. out of a container)

   - Add SO_INQ and SCM_INQ support to AF_UNIX

   - Add SIOCINQ support to AF_VSOCK

   - Add TCP_MAXSEG sockopt to MPTCP

   - Add IPv6 force_forwarding sysctl to enable forwarding per interface

   - Make TCP validation of whether packet fully fits in the receive
     window and the rcv_buf more strict. With increased use of HW
     aggregation a single "packet" can be multiple 100s of kB

   - Add MSG_MORE flag to optimize large TCP transmissions via sockmap,
     improves latency up to 33% for sockmap users

   - Convert TCP send queue handling from tasklet to BH workque

   - Improve BPF iteration over TCP sockets to see each socket exactly
     once

   - Remove obsolete and unused TCP RFC3517/RFC6675 loss recovery code

   - Support enabling kernel threads for NAPI processing on per-NAPI
     instance basis rather than a whole device. Fully stop the kernel
     NAPI thread when threaded NAPI gets disabled. Previously thread
     would stick around until ifdown due to tricky synchronization

   - Allow multicast routing to take effect on locally-generated packets

   - Add output interface argument for End.X in segment routing

   - MCTP: add support for gateway routing, improve bind() handling

   - Don't require rtnl_lock when fetching an IPv6 neighbor over Netlink

   - Add a new neighbor flag ("extern_valid"), which cedes refresh
     responsibilities to userspace. This is needed for EVPN multi-homing
     where a neighbor entry for a multi-homed host needs to be synced
     across all the VTEPs among which the host is multi-homed

   - Support NUD_PERMANENT for proxy neighbor entries

   - Add a new queuing discipline for IETF RFC9332 DualQ Coupled AQM

   - Add sequence numbers to netconsole messages. Unregister
     netconsole's console when all net targets are removed. Code
     refactoring. Add a number of selftests

   - Align IPSec inbound SA lookup to RFC 4301. Only SPI and protocol
     should be used for an inbound SA lookup

   - Support inspecting ref_tracker state via DebugFS

   - Don't force bonding advertisement frames tx to ~333 ms boundaries.
     Add broadcast_neighbor option to send ARP/ND on all bonded links

   - Allow providing upcall pid for the 'execute' command in openvswitch

   - Remove DCCP support from Netfilter's conntrack

   - Disallow multiple packet duplications in the queuing layer

   - Prevent use of deprecated iptables code on PREEMPT_RT

  Driver API:

   - Support RSS and hashing configuration over ethtool Netlink

   - Add dedicated ethtool callbacks for getting and setting hashing
     fields

   - Add support for power budget evaluation strategy in PSE /
     Power-over-Ethernet. Generate Netlink events for overcurrent etc

   - Support DPLL phase offset monitoring across all device inputs.
     Support providing clock reference and SYNC over separate DPLL
     inputs

   - Support traffic classes in devlink rate API for bandwidth
     management

   - Remove rtnl_lock dependency from UDP tunnel port configuration

  Device drivers:

   - Add a new Broadcom driver for 800G Ethernet (bnge)

   - Add a standalone driver for Microchip ZL3073x DPLL

   - Remove IBM's NETIUCV device driver

   - Ethernet high-speed NICs:
      - Broadcom (bnxt):
         - support zero-copy Tx of DMABUF memory
         - take page size into account for page pool recycling rings
      - Intel (100G, ice, idpf):
         - idpf: XDP and AF_XDP support preparations
         - idpf: add flow steering
         - add link_down_events statistic
         - clean up the TSPLL code
         - preparations for live VM migration
      - nVidia/Mellanox:
         - support zero-copy Rx/Tx interfaces (DMABUF and io_uring)
         - optimize context memory usage for matchers
         - expose serial numbers in devlink info
         - support PCIe congestion metrics
      - Meta (fbnic):
         - add 25G, 50G, and 100G link modes to phylink
         - support dumping FW logs
      - Marvell/Cavium:
         - support for CN20K generation of the Octeon chips
      - Amazon:
         - add HW clock (without timestamping, just hypervisor time access)

   - Ethernet virtual:
      - VirtIO net:
         - support segmentation of UDP-tunnel-encapsulated packets
      - Google (gve):
         - support packet timestamping and clock synchronization
      - Microsoft vNIC:
         - add handler for device-originated servicing events
         - allow dynamic MSI-X vector allocation
         - support Tx bandwidth clamping

   - Ethernet NICs consumer, and embedded:
      - AMD:
         - amd-xgbe: hardware timestamping and PTP clock support
      - Broadcom integrated MACs (bcmgenet, bcmasp):
         - use napi_complete_done() return value to support NAPI polling
         - add support for re-starting auto-negotiation
      - Broadcom switches (b53):
         - support BCM5325 switches
         - add bcm63xx EPHY power control
      - Synopsys (stmmac):
         - lots of code refactoring and cleanups
      - TI:
         - icssg-prueth: read firmware-names from device tree
         - icssg: PRP offload support
      - Microchip:
         - lan78xx: convert to PHYLINK for improved PHY and MAC management
         - ksz: add KSZ8463 switch support
      - Intel:
         - support similar queue priority scheme in multi-queue and
           time-sensitive networking (taprio)
         - support packet pre-emption in both
      - RealTek (r8169):
         - enable EEE at 5Gbps on RTL8126
      - Airoha:
         - add PPPoE offload support
         - MDIO bus controller for Airoha AN7583

   - Ethernet PHYs:
      - support for the IPQ5018 internal GE PHY
      - micrel KSZ9477 switch-integrated PHYs:
         - add MDI/MDI-X control support
         - add RX error counters
         - add cable test support
         - add Signal Quality Indicator (SQI) reporting
      - dp83tg720: improve reset handling and reduce link recovery time
      - support bcm54811 (and its MII-Lite interface type)
      - air_en8811h: support resume/suspend
      - support PHY counters for QCA807x and QCA808x
      - support WoL for QCA807x

   - CAN drivers:
      - rcar_canfd: support for Transceiver Delay Compensation
      - kvaser: report FW versions via devlink dev info

   - WiFi:
      - extended regulatory info support (6 GHz)
      - add statistics and beacon monitor for Multi-Link Operation (MLO)
      - support S1G aggregation, improve S1G support
      - add Radio Measurement action fields
      - support per-radio RTS threshold
      - some work around how FIPS affects wifi, which was wrong (RC4 is
        used by TKIP, not only WEP)
      - improvements for unsolicited probe response handling

   - WiFi drivers:
      - RealTek (rtw88):
         - IBSS mode for SDIO devices
      - RealTek (rtw89):
         - BT coexistence for MLO/WiFi7
         - concurrent station + P2P support
         - support for USB devices RTL8851BU/RTL8852BU
      - Intel (iwlwifi):
         - use embedded PNVM in (to be released) FW images to fix
           compatibility issues
         - many cleanups (unused FW APIs, PCIe code, WoWLAN)
         - some FIPS interoperability
      - MediaTek (mt76):
         - firmware recovery improvements
         - more MLO work
      - Qualcomm/Atheros (ath12k):
         - fix scan on multi-radio devices
         - more EHT/Wi-Fi 7 features
         - encapsulation/decapsulation offload
      - Broadcom (brcm80211):
         - support SDIO 43751 device

   - Bluetooth:
      - hci_event: add support for handling LE BIG Sync Lost event
      - ISO: add socket option to report packet seqnum via CMSG
      - ISO: support SCM_TIMESTAMPING for ISO TS

   - Bluetooth drivers:
      - intel_pcie: support Function Level Reset
      - nxpuart: add support for 4M baudrate
      - nxpuart: implement powerup sequence, reset, FW dump, and FW loading"

* tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1742 commits)
  dpll: zl3073x: Fix build failure
  selftests: bpf: fix legacy netfilter options
  ipv6: annotate data-races around rt->fib6_nsiblings
  ipv6: fix possible infinite loop in fib6_info_uses_dev()
  ipv6: prevent infinite loop in rt6_nlmsg_size()
  ipv6: add a retry logic in net6_rt_notify()
  vrf: Drop existing dst reference in vrf_ip6_input_dst
  net/sched: taprio: align entry index attr validation with mqprio
  net: fsl_pq_mdio: use dev_err_probe
  selftests: rtnetlink.sh: remove esp4_offload after test
  vsock: remove unnecessary null check in vsock_getname()
  igb: xsk: solve negative overflow of nb_pkts in zerocopy mode
  stmmac: xsk: fix negative overflow of budget in zerocopy mode
  dt-bindings: ieee802154: Convert at86rf230.txt yaml format
  net: dsa: microchip: Disable PTP function of KSZ8463
  net: dsa: microchip: Setup fiber ports for KSZ8463
  net: dsa: microchip: Write switch MAC address differently for KSZ8463
  net: dsa: microchip: Use different registers for KSZ8463
  net: dsa: microchip: Add KSZ8463 switch support to KSZ DSA driver
  dt-bindings: net: dsa: microchip: Add KSZ8463 switch support
  ...
2025-07-30 08:58:55 -07:00
Linus Torvalds
177bf8620c Merge tag 'sound-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
 "This includes lots of file shuffling due to HD-audio code
  reorganization and many trivial changes, but otherwise there shouldn't
  be much surprise from the functionality POV. The PR includes the PM
  changes as prerequisite, too. Some highlights below:

  Core:
   - Performance optimizations in PCM core code
   - Refactoring of ASoC Kconfig menus to be hopefully more consistant
     and easier to navigate.
   - Refactoring of ASoC DAPM code, mainly hiding functionality that
     doesn't need to be exposed to drivers

  HD-audio reorganization:
   - All code are moved under sound/hda with a bit more understandable
     tree structure, as well as file renames
   - The huge Realtek driver code is split to several parts, a common
     helper module with driver modules per probe entry
   - HDMI and Cirrus codec drivers also split

  ASoC:
   - Further work on the generic handling for SoundWire SDCA devices
   - Support for AMD ACP7.2 and SoundWire on ACP 7.1, Fairphone 4 & 5,
     various Intel systems, Qualcomm QCS8275, Richtek RTQ9124 and TI
     TAS5753

  HD-audio and USB-audio:
   - TAS2781 driver cleanup and TAS2770 support
   - EQ enablement in CA0132 driver
   - USB audio quirk code cleanups

  Others:
   - Cleanups of PM autosuspend call patterns with the update from the
     PM tree
   - Lots of strcpy() -> strscpy() conversions for fixed size arrays"

* tag 'sound-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (385 commits)
  ALSA: hda: Add TAS2770 support
  ASoC: qcom: sm8250: Add Fairphone 4 soundcard compatible
  ASoC: dt-bindings: qcom,sm8250: Add Fairphone 4 sound card
  ASoC: dt-bindings: qcom,q6afe: Document q6usb subnode
  ASoC: SDCA: Fix implicit cast from le16
  ASoC: SDCA: Shrink detected_mode_handler() stack frame
  ASoC: SDCA: Check devm_mutex_init() return value
  ASoC: SDCA: add route by the number of input pins in MU entity
  ALSA: hda/realtek: Add support for ASUS Commercial laptops using CS35L41 HDA
  ASoC: Intel: sof_rt5682: Add HDMI-In capture with rt5682 support for PTL.
  ASoC: codec: tlv320aic32x4: Fix reset GPIO check
  ASoC: dt-bindings: qcom,lpass-va-macro: Define clock-names in top-level
  ASoC: SDCA: Add hw_params() helper function
  ASoC: SDCA: Add a helper to get the SoundWire port number
  ASoC: SDCA: Add helper to add DAI constraints
  ASoC: soc-dai: Add private data to snd_soc_dai
  ASoC: SDCA: Move SDCA search functions and export
  ASoC: SDCA: Remove overly chatty input pin list warning
  ASoC: SDCA: Allow read-only controls to be deferrable
  ASoC: SDCA: Update memory allocations to zero initialise
  ...
2025-07-28 21:49:49 -07:00
Takashi Iwai
bca53a176f Merge tag 'asoc-v6.17' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v6.17

There's a few new drivers here and quite a lot of cleanup work from
Morimoto-san but generally this has been quite a quiet release,
resulting in a fairly small diffstat.  Highlights include:

 - Refactoring of the Kconfig menus to be hopefully more consistant and
   easier to navigate.
 - Refactoring of the DAPM code, mainly hiding functionality that
   doesn't need to be exposed to drivers.
 - Removal of the unused upstream weak paths DAPM functionality.
 - Further work on the generic handling for SoundWire SDCA devices.
 - Cleanups of our usage of the PM autosuspend functions, this pulls in
   some PM core changes on a shared tag.
 - Support for AMD ACP7.2 and SoundWire on ACP 7.1, Fairphone 4 & 5,
   various Intel systems, Qualcomm QCS8275, Richtek RTQ9124 and TI TAS5753.
2025-07-24 14:47:49 +02:00
Théo Lebrun
ca943354f2 MIPS: eyeq5_defconfig: add I2C subsystem, driver and temp sensor driver
Enable I2C support on the EyeQ5 platform. The evaluation board has a
temperature sensor mounted which helps test the integration.

Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-07-16 18:33:39 +02:00
Théo Lebrun
0ca9aba59c MIPS: eyeq5_defconfig: add GPIO subsystem & driver
Enable GPIO support on the EyeQ5 platform.

Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-07-16 18:33:34 +02:00
Théo Lebrun
daf3082f89 MIPS: eyeq5_defconfig: Update for v6.16-rc1
- Sort by moving CONFIG_PAGE_SIZE_16KB=y.

 - Drop CONFIG_MACH_EYEQ5=y because it is the default:

      # arch/mips/mobileye/Kconfig
      choice
         prompt "Mobileye EyeQ SoC selection"
         default MACH_EYEQ5

 - Drop CONFIG_SPARSEMEM_MANUAL=y because:

      # mm/Kconfig
      choice
         prompt "Memory model"
         depends on SELECT_MEMORY_MODEL
         default SPARSEMEM_MANUAL if ARCH_SPARSEMEM_DEFAULT
         default FLATMEM_MANUAL

      # arch/mips/Kconfig
      config EYEQ
         select ARCH_SPARSEMEM_DEFAULT if 64BIT

Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-07-16 18:30:39 +02:00
Takashi Iwai
f261196d4b mips: loongson3_defconfig: Update HD-audio configs
Since the reorganization of HD-audio drivers, Realtek driver has been
split.  Update to the new Kconfigs to catch up.

Fixes: aeeb85f26c ("ALSA: hda: Split Realtek HD-audio codec driver")
Link: https://patch.msgid.link/20250715075237.28476-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-07-15 17:07:43 +02:00
Eric Biggers
b6ac1dac2f lib/crypto: mips/sha1: Migrate optimized code into library
Instead of exposing the mips-optimized SHA-1 code via mips-specific
crypto_shash algorithms, instead just implement the sha1_blocks()
library function.  This is much simpler, it makes the SHA-1 library
functions be mips-optimized, and it fixes the longstanding issue where
the mips-optimized SHA-1 code was disabled by default.  SHA-1 still
remains available through crypto_shash, but individual architectures no
longer need to handle it.

Note: to see the diff from arch/mips/cavium-octeon/crypto/octeon-sha1.c
to lib/crypto/mips/sha1.h, view this commit with 'git show -M10'.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250712232329.818226-10-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2025-07-14 11:11:49 -07:00
Pablo Neira Ayuso
fd72f265bb netfilter: conntrack: remove DCCP protocol support
The DCCP socket family has now been removed from this tree, see:

  8bb3212be4 ("Merge branch 'net-retire-dccp-socket'")

Remove connection tracking and NAT support for this protocol, this
should not pose a problem because no DCCP traffic is expected to be seen
on the wire.

As for the code for matching on dccp header for iptables and nftables,
mark it as deprecated and keep it in place. Ruleset restoration is an
atomic operation. Without dccp matching support, an astray match on dccp
could break this operation leaving your computer with no policy in
place, so let's follow a more conservative approach for matches.

Add CONFIG_NFT_EXTHDR_DCCP which is set to 'n' by default to deprecate
dccp extension support. Similarly, label CONFIG_NETFILTER_XT_MATCH_DCCP
as deprecated too and also set it to 'n' by default.

Code to match on DCCP protocol from ebtables also remains in place, this
is just a few checks on IPPROTO_DCCP from _check() path which is
exercised when ruleset is loaded. There is another use of IPPROTO_DCCP
from the _check() path in the iptables multiport match. Another check
for IPPROTO_DCCP from the packet in the reject target is also removed.

So let's schedule removal of the dccp matching for a second stage, this
should not interfer with the dccp retirement since this is only matching
on the dccp header.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2025-07-03 13:51:39 +02:00
Benoît Monin
f973fe6528 MIPS: eyeq5_defconfig: add cadence MMC/SDHCI driver
Enable MMC support on eyeQ5 platform so it can be used as the root
partition.

Signed-off-by: Benoît Monin <benoit.monin@bootlin.com>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-07-03 12:35:11 +02:00
Benoît Monin
e1c98b1f5f MIPS: eyeq6_defconfig: add cadence MMC/SDHCI driver
Enable MMC support on eyeQ6 platform so it can be used as the root
partition.

Signed-off-by: Benoît Monin <benoit.monin@bootlin.com>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-07-03 12:35:11 +02:00
Eric Biggers
7117739ad2 lib/crypto: mips/sha512: Migrate optimized SHA-512 code to library
Instead of exposing the mips-optimized SHA-512 code via mips-specific
crypto_shash algorithms, instead just implement the sha512_blocks()
library function.  This is much simpler, it makes the SHA-512 (and
SHA-384) library functions be mips-optimized, and it fixes the
longstanding issue where the mips-optimized SHA-512 code was disabled by
default.  SHA-512 still remains available through crypto_shash, but
individual architectures no longer need to handle it.

Note: to see the diff from
arch/mips/cavium-octeon/crypto/octeon-sha512.c to
lib/crypto/mips/sha512.h, view this commit with 'git show -M10'.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250630160320.2888-11-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2025-06-30 09:26:19 -07:00
Kuninori Morimoto
b13f7eef9f ASoC: img: Standardize ASoC menu
Current Kconfig menu at [ALSA for SoC audio support] has no rules.
So, some venders are using menu style, some venders are listed each drivers
on top page, etc. It is difficult to find target vender and/or drivers
because it is very random.

Let's standardize ASoC menu

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87v7p1zqf4.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-06-24 01:01:14 +01:00
Linus Torvalds
1b98f357da Merge tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
 "Core:

   - Implement the Device Memory TCP transmit path, allowing zero-copy
     data transmission on top of TCP from e.g. GPU memory to the wire.

   - Move all the IPv6 routing tables management outside the RTNL scope,
     under its own lock and RCU. The route control path is now 3x times
     faster.

   - Convert queue related netlink ops to instance lock, reducing again
     the scope of the RTNL lock. This improves the control plane
     scalability.

   - Refactor the software crc32c implementation, removing unneeded
     abstraction layers and improving significantly the related
     micro-benchmarks.

   - Optimize the GRO engine for UDP-tunneled traffic, for a 10%
     performance improvement in related stream tests.

   - Cover more per-CPU storage with local nested BH locking; this is a
     prep work to remove the current per-CPU lock in local_bh_disable()
     on PREMPT_RT.

   - Introduce and use nlmsg_payload helper, combining buffer bounds
     verification with accessing payload carried by netlink messages.

  Netfilter:

   - Rewrite the procfs conntrack table implementation, improving
     considerably the dump performance. A lot of user-space tools still
     use this interface.

   - Implement support for wildcard netdevice in netdev basechain and
     flowtables.

   - Integrate conntrack information into nft trace infrastructure.

   - Export set count and backend name to userspace, for better
     introspection.

  BPF:

   - BPF qdisc support: BPF-qdisc can be implemented with BPF struct_ops
     programs and can be controlled in similar way to traditional qdiscs
     using the "tc qdisc" command.

   - Refactor the UDP socket iterator, addressing long standing issues
     WRT duplicate hits or missed sockets.

  Protocols:

   - Improve TCP receive buffer auto-tuning and increase the default
     upper bound for the receive buffer; overall this improves the
     single flow maximum thoughput on 200Gbs link by over 60%.

   - Add AFS GSSAPI security class to AF_RXRPC; it provides transport
     security for connections to the AFS fileserver and VL server.

   - Improve TCP multipath routing, so that the sources address always
     matches the nexthop device.

   - Introduce SO_PASSRIGHTS for AF_UNIX, to allow disabling SCM_RIGHTS,
     and thus preventing DoS caused by passing around problematic FDs.

   - Retire DCCP socket. DCCP only receives updates for bugs, and major
     distros disable it by default. Its removal allows for better
     organisation of TCP fields to reduce the number of cache lines hit
     in the fast path.

   - Extend TCP drop-reason support to cover PAWS checks.

  Driver API:

   - Reorganize PTP ioctl flag support to require an explicit opt-in for
     the drivers, avoiding the problem of drivers not rejecting new
     unsupported flags.

   - Converted several device drivers to timestamping APIs.

   - Introduce per-PHY ethtool dump helpers, improving the support for
     dump operations targeting PHYs.

  Tests and tooling:

   - Add support for classic netlink in user space C codegen, so that
     ynl-c can now read, create and modify links, routes addresses and
     qdisc layer configuration.

   - Add ynl sub-types for binary attributes, allowing ynl-c to output
     known struct instead of raw binary data, clarifying the classic
     netlink output.

   - Extend MPTCP selftests to improve the code-coverage.

   - Add tests for XDP tail adjustment in AF_XDP.

  New hardware / drivers:

   - OpenVPN virtual driver: offload OpenVPN data channels processing to
     the kernel-space, increasing the data transfer throughput WRT the
     user-space implementation.

   - Renesas glue driver for the gigabit ethernet RZ/V2H(P) SoC.

   - Broadcom asp-v3.0 ethernet driver.

   - AMD Renoir ethernet device.

   - ReakTek MT9888 2.5G ethernet PHY driver.

   - Aeonsemi 10G C45 PHYs driver.

  Drivers:

   - Ethernet high-speed NICs:
       - nVidia/Mellanox (mlx5):
           - refactor the steering table handling to significantly
             reduce the amount of memory used
           - add support for complex matches in H/W flow steering
           - improve flow streeing error handling
           - convert to netdev instance locking
       - Intel (100G, ice, igb, ixgbe, idpf):
           - ice: add switchdev support for LLDP traffic over VF
           - ixgbe: add firmware manipulation and regions devlink support
           - igb: introduce support for frame transmission premption
           - igb: adds persistent NAPI configuration
           - idpf: introduce RDMA support
           - idpf: add initial PTP support
       - Meta (fbnic):
           - extend hardware stats coverage
           - add devlink dev flash support
       - Broadcom (bnxt):
           - add support for RX-side device memory TCP
       - Wangxun (txgbe):
           - implement support for udp tunnel offload
           - complete PTP and SRIOV support for AML 25G/10G devices

   - Ethernet NICs embedded and virtual:
       - Google (gve):
           - add device memory TCP TX support
       - Amazon (ena):
           - support persistent per-NAPI config
       - Airoha:
           - add H/W support for L2 traffic offload
           - add per flow stats for flow offloading
       - RealTek (rtl8211): add support for WoL magic packet
       - Synopsys (stmmac):
           - dwmac-socfpga 1000BaseX support
           - add Loongson-2K3000 support
           - introduce support for hardware-accelerated VLAN stripping
       - Broadcom (bcmgenet):
           - expose more H/W stats
       - Freescale (enetc, dpaa2-eth):
           - enetc: add MAC filter, VLAN filter RSS and loopback support
           - dpaa2-eth: convert to H/W timestamping APIs
       - vxlan: convert FDB table to rhashtable, for better scalabilty
       - veth: apply qdisc backpressure on full ring to reduce TX drops

   - Ethernet switches:
       - Microchip (kzZ88x3): add ETS scheduler support

   - Ethernet PHYs:
       - RealTek (rtl8211):
           - add support for WoL magic packet
           - add support for PHY LEDs

   - CAN:
       - Adds RZ/G3E CANFD support to the rcar_canfd driver.
       - Preparatory work for CAN-XL support.
       - Add self-tests framework with support for CAN physical interfaces.

   - WiFi:
       - mac80211:
           - scan improvements with multi-link operation (MLO)
       - Qualcomm (ath12k):
           - enable AHB support for IPQ5332
           - add monitor interface support to QCN9274
           - add multi-link operation support to WCN7850
           - add 802.11d scan offload support to WCN7850
           - monitor mode for WCN7850, better 6 GHz regulatory
       - Qualcomm (ath11k):
           - restore hibernation support
       - MediaTek (mt76):
           - WiFi-7 improvements
           - implement support for mt7990
       - Intel (iwlwifi):
           - enhanced multi-link single-radio (EMLSR) support on 5 GHz links
           - rework device configuration
       - RealTek (rtw88):
           - improve throughput for RTL8814AU
       - RealTek (rtw89):
           - add multi-link operation support
           - STA/P2P concurrency improvements
           - support different SAR configs by antenna

   - Bluetooth:
       - introduce HCI Driver protocol
       - btintel_pcie: do not generate coredump for diagnostic events
       - btusb: add HCI Drv commands for configuring altsetting
       - btusb: add RTL8851BE device 0x0bda:0xb850
       - btusb: add new VID/PID 13d3/3584 for MT7922
       - btusb: add new VID/PID 13d3/3630 and 13d3/3613 for MT7925
       - btnxpuart: implement host-wakeup feature"

* tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1611 commits)
  selftests/bpf: Fix bpf selftest build warning
  selftests: netfilter: Fix skip of wildcard interface test
  net: phy: mscc: Stop clearing the the UDPv4 checksum for L2 frames
  net: openvswitch: Fix the dead loop of MPLS parse
  calipso: Don't call calipso functions for AF_INET sk.
  selftests/tc-testing: Add a test for HFSC eltree double add with reentrant enqueue behaviour on netem
  net_sched: hfsc: Address reentrant enqueue adding class to eltree twice
  octeontx2-pf: QOS: Refactor TC_HTB_LEAF_DEL_LAST callback
  octeontx2-pf: QOS: Perform cache sync on send queue teardown
  net: mana: Add support for Multi Vports on Bare metal
  net: devmem: ncdevmem: remove unused variable
  net: devmem: ksft: upgrade rx test to send 1K data
  net: devmem: ksft: add 5 tuple FS support
  net: devmem: ksft: add exit_wait to make rx test pass
  net: devmem: ksft: add ipv4 support
  net: devmem: preserve sockc_err
  page_pool: fix ugly page_pool formatting
  net: devmem: move list_add to net_devmem_bind_dmabuf.
  selftests: netfilter: nft_queue.sh: include file transfer duration in log message
  net: phy: mscc: Fix memory leak when using one step timestamping
  ...
2025-05-28 15:24:36 -07:00
Linus Torvalds
14418ddcc2 Merge tag 'v6.16-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
 "API:
   - Fix memcpy_sglist to handle partially overlapping SG lists
   - Use memcpy_sglist to replace null skcipher
   - Rename CRYPTO_TESTS to CRYPTO_BENCHMARK
   - Flip CRYPTO_MANAGER_DISABLE_TEST into CRYPTO_SELFTESTS
   - Hide CRYPTO_MANAGER
   - Add delayed freeing of driver crypto_alg structures

  Compression:
   - Allocate large buffers on first use instead of initialisation in scomp
   - Drop destination linearisation buffer in scomp
   - Move scomp stream allocation into acomp
   - Add acomp scatter-gather walker
   - Remove request chaining
   - Add optional async request allocation

  Hashing:
   - Remove request chaining
   - Add optional async request allocation
   - Move partial block handling into API
   - Add ahash support to hmac
   - Fix shash documentation to disallow usage in hard IRQs

  Algorithms:
   - Remove unnecessary SIMD fallback code on x86 and arm/arm64
   - Drop avx10_256 xts(aes)/ctr(aes) on x86
   - Improve avx-512 optimisations for xts(aes)
   - Move chacha arch implementations into lib/crypto
   - Move poly1305 into lib/crypto and drop unused Crypto API algorithm
   - Disable powerpc/poly1305 as it has no SIMD fallback
   - Move sha256 arch implementations into lib/crypto
   - Convert deflate to acomp
   - Set block size correctly in cbcmac

  Drivers:
   - Do not use sg_dma_len before mapping in sun8i-ss
   - Fix warm-reboot failure by making shutdown do more work in qat
   - Add locking in zynqmp-sha
   - Remove cavium/zip
   - Add support for PCI device 0x17D8 to ccp
   - Add qat_6xxx support in qat
   - Add support for RK3576 in rockchip-rng
   - Add support for i.MX8QM in caam

  Others:
   - Fix irq_fpu_usable/kernel_fpu_begin inconsistency during CPU bring-up
   - Add new SEV/SNP platform shutdown API in ccp"

* tag 'v6.16-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (382 commits)
  x86/fpu: Fix irq_fpu_usable() to return false during CPU onlining
  crypto: qat - add missing header inclusion
  crypto: api - Redo lookup on EEXIST
  Revert "crypto: testmgr - Add hash export format testing"
  crypto: marvell/cesa - Do not chain submitted requests
  crypto: powerpc/poly1305 - add depends on BROKEN for now
  Revert "crypto: powerpc/poly1305 - Add SIMD fallback"
  crypto: ccp - Add missing tee info reg for teev2
  crypto: ccp - Add missing bootloader info reg for pspv5
  crypto: sun8i-ce - move fallback ahash_request to the end of the struct
  crypto: octeontx2 - Use dynamic allocated memory region for lmtst
  crypto: octeontx2 - Initialize cptlfs device info once
  crypto: xts - Only add ecb if it is not already there
  crypto: lrw - Only add ecb if it is not already there
  crypto: testmgr - Add hash export format testing
  crypto: testmgr - Use ahash for generic tfm
  crypto: hmac - Add ahash support
  crypto: testmgr - Ignore EEXIST on shash allocation
  crypto: algapi - Add driver template support to crypto_inst_setname
  crypto: shash - Set reqsize in shash_alg
  ...
2025-05-26 13:47:28 -07:00
Eric Biggers
6f9d0f53f5 crypto: Kconfig - make CRYPTO_MANAGER a hidden symbol
There is no reason for people configuring the kernel to be asked about
CRYPTO_MANAGER, so make it a hidden symbol.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2025-05-12 13:34:03 +08:00
Eric Biggers
3357b6c945 crypto: tcrypt - rename CRYPTO_TEST to CRYPTO_BENCHMARK
tcrypt is actually a benchmarking module and not the actual tests.  This
regularly causes confusion.  Update the kconfig option name and help
text accordingly.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2025-05-12 13:32:53 +08:00
Christoph Hellwig
eeadd68e2a block: remove bounce buffering support
The block layer bounce buffering support is unused now, remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20250505081138.3435992-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-05-05 13:22:39 -06:00
Eric Biggers
b67b6f9adb crypto: mips/sha256 - implement library instead of shash
Instead of providing crypto_shash algorithms for the arch-optimized
SHA-256 code, instead implement the SHA-256 library.  This is much
simpler, it makes the SHA-256 library functions be arch-optimized, and
it fixes the longstanding issue where the arch-optimized SHA-256 was
disabled by default.  SHA-256 still remains available through
crypto_shash, but individual architectures no longer need to handle it.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2025-05-05 18:20:43 +08:00
Kuniyuki Iwashima
2a63dd0edf net: Retire DCCP socket.
DCCP was orphaned in 2021 by commit 054c4610bd ("MAINTAINERS: dccp:
move Gerrit Renker to CREDITS"), which noted that the last maintainer
had been inactive for five years.

In recent years, it has become a playground for syzbot, and most changes
to DCCP have been odd bug fixes triggered by syzbot.  Apart from that,
the only changes have been driven by treewide or networking API updates
or adjustments related to TCP.

Thus, in 2023, we announced we would remove DCCP in 2025 via commit
b144fcaf46 ("dccp: Print deprecation notice.").

Since then, only one individual has contacted the netdev mailing list. [0]

There is ongoing research for Multipath DCCP.  The repository is hosted
on GitHub [1], and development is not taking place through the upstream
community.  While the repository is published under the GPLv2 license,
the scheduling part remains proprietary, with a LICENSE file [2] stating:

  "This is not Open Source software."

The researcher mentioned a plan to address the licensing issue, upstream
the patches, and step up as a maintainer, but there has been no further
communication since then.

Maintaining DCCP for a decade without any real users has become a burden.

Therefore, it's time to remove it.

Removing DCCP will also provide significant benefits to TCP.  It allows
us to freely reorganize the layout of struct inet_connection_sock, which
is currently shared with DCCP, and optimize it to reduce the number of
cachelines accessed in the TCP fast path.

Note that we keep DCCP netfilter modules as requested.  [3]

Link: https://lore.kernel.org/netdev/20230710182253.81446-1-kuniyu@amazon.com/T/#u #[0]
Link: https://github.com/telekom/mp-dccp #[1]
Link: https://github.com/telekom/mp-dccp/blob/mpdccp_v03_k5.10/net/dccp/non_gpl_scheduler/LICENSE #[2]
Link: https://lore.kernel.org/netdev/Z_VQ0KlCRkqYWXa-@calendula/ #[3]
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Acked-by: Paul Moore <paul@paul-moore.com> (LSM and SELinux)
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Link: https://patch.msgid.link/20250410023921.11307-3-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-11 18:58:10 -07:00
Eric Biggers
a0d55dd740 lib/crc: remove unnecessary prompt for CONFIG_CRC_ITU_T
All modules that need CONFIG_CRC_ITU_T already select it, so there is no
need to bother users about the option.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250401221600.24878-6-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
2025-04-04 11:31:42 -07:00
Eric Biggers
a6d0dbba95 lib/crc: remove unnecessary prompt for CONFIG_CRC_T10DIF
All modules that need CONFIG_CRC_T10DIF already select it, so there is no
need to bother users about the option.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250401221600.24878-5-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
2025-04-04 11:31:42 -07:00
Eric Biggers
2038af8eda lib/crc: remove unnecessary prompt for CONFIG_CRC16
All modules that need CONFIG_CRC16 already select it, so there is no
need to bother users about the option.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250401221600.24878-4-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
2025-04-04 11:31:42 -07:00
Eric Biggers
7939da264b lib/crc: remove unnecessary prompt for CONFIG_CRC_CCITT
All modules that need CONFIG_CRC_CCITT already select it, so there is no
need to bother users about the option.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250401221600.24878-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
2025-04-04 11:31:42 -07:00
Linus Torvalds
dcab75a3c8 Merge tag 'mfd-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
 "Maxim MAX77705:
   - Added core MFD driver.
   - Added charger driver.
   - Added devicetree bindings for the charger and MFD core.
   - Added Haptic controller support via the input subsystem.
   - Added LED support.
   - Added support to simple-mfd-i2c for fuel gauge and hwmon.

  Samsung S2MPU05 (Exynos7870 PMIC):
   - Added core MFD support.
   - Added Regulator support for 21 LDOs and 5 BUCKs.
   - Added devicetree bindings for regulators and the PMIC core.

  TI TPS65215 & TPS65214:
   - Added support to the existing TPS65219 driver.
   - Added devicetree bindings.

  STMicroelectronics STM32MP25:
   - Added support to the stm32-timers MFD driver.
   - Added devicetree bindings.

  Congatec Board Controller (CGBC):
   - Added HWMON support for internal sensors.
   - Added support for the conga-SA8 module.

  Microchip LAN969X:
   - Enabled the at91-usart MFD driver for this architecture.

  MediaTek MT6359:
   - Added mfd_cell for mt6359-accdet to allow its driver to probe.

  Other misc driver updates:
   - AXP20X (AXP717): Added AXP717_TS_PIN_CFG register to writeable regs
     for temperature sensor configuration.
   - SM501: Switched to using BIT() macro to mitigate potential integer
     overflows in GPIO functions.
   - ENE KB3930: Added a NULL pointer check for off_gpios during probe
     to prevent potential dereference.
   - SYSCON: Added a check for invalid resource size to prevent issues
     from DT misconfiguration.
   - CGBC: Corrected signedness issues in cgbc_session_request
   - intel_soc_pmic_chtdc_ti / intel_soc_pmic_crc: Removed unneeded
     explicit assignment to REGCACHE_NONE.
   - ipaq-micro / tps65010: Switched to using str_enable_disable()
     helpers for clarity and potential size reduction.
   - upboard-fpga: Removed unnecessary ACPI_PTR() annotation.
   - max8997: Removed unused max8997_irq_exit() function, using devm_*
     helpers instead.
   - lp3943: Dropped unused #include <linux/pwm.h> from the header file.
   - db8500-prcmu: Removed needless return statements in void APIs.
   - qnap-mcu: Replaced commas with semicolons between expressions for
     correctness.
   - STA2X11: Removed the core MFD driver as the underlying platform
     support was removed.
   - EZX-PCAP: Removed the unused pcap_adc_sync function.
   - PCF50633 (OpenMoko PMIC): Removed the entire driver (core, adc,
     gpio, irq) as the underlying s3c24xx platform support was removed.

  Devicetree updates:
   - Converted fsl,mcu-mpc8349emitx binding to YAML
   - Added qcom,msm8937-tcsr compatible
   - Added microchip,sama7d65-flexcom compatible
   - Added rockchip,rk3528-qos syscon compatible
   - Added airoha,en7581-pbus-csr syscon compatible
   - Added microchip,sama7d65-ddr3phy syscon compatible
   - Added microchip,sama7d65-sfrbu syscon compatible"

* tag 'mfd-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (49 commits)
  mfd: cgbc-core: Add support for conga-SA8
  dt-bindings: mfd: syscon: Add microchip,sama7d65-sfrbu
  dt-bindings: mfd: syscon: Add microchip,sama7d65-ddr3phy
  mfd: cgbc: Add support for HWMON
  dt-bindings: mfd: syscon: Add the pbus-csr node for Airoha EN7581 SoC
  mfd: cgbc-core: Cleanup signedness in cgbc_session_request()
  mfd: pcf50633: Remove remaining PCF50633 support
  mfd: pcf50633: Remove unused platform IRQ code
  mfd: pcF50633-gpio: Remove unused driver
  mfd: pcf50633-adc: Remove unused driver
  mfd: qnap-mcu: Convert commas to semicolons in qnap_mcu_exec()
  mfd: mt6397-core: Add mfd_cell for mt6359-accdet
  dt-bindings: mfd: syscon: Add rk3528 QoS register compatible
  dt-bindings: mfd: atmel,sama5d2-flexcom: Add microchip,sama7d65-flexcom
  mfd: ezx-pcap: Remove unused pcap_adc_sync
  mfd: db8500-prcmu: Remove needless return in three void APIs
  mfd: Remove STA2x11 core driver
  mfd: max77620: Allow building as a module
  mfd: ene-kb3930: Fix a potential NULL pointer dereference
  dt-bindings: mfd: qcom,tcsr: Add compatible for MSM8937
  ...
2025-03-29 14:33:13 -07:00
Linus Torvalds
1c83601b8f Merge tag 'mips_6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Thomas Bogendoerfer:

 - Add support for multi-cluster configuration

 - Add quirks for enabling multi-cluster mode on EyeQ6

 - Add DTS clocks for ralink

 - Cleanup realtek DTS

 - Other cleanups and fixes

* tag 'mips_6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (35 commits)
  MIPS: config: omega2+, vocore2: enable CLK_MTMIPS
  arch: mips: defconfig: Drop obsolete CONFIG_NET_CLS_TCINDEX
  MIPS: cm: Fix warning if MIPS_CM is disabled
  MIPS: Fix Macro name
  MIPS: ds1287: Match ds1287_set_base_clock() function types
  MIPS: cevt-ds1287: Add missing ds1287.h include
  MIPS: dec: Declare which_prom() as static
  MIPS: Loongson2ef: Replace deprecated strncpy() with strscpy()
  mips: dts: ralink: mt7628a: update system controller node and its consumers
  mips: dts: ralink: mt7620a: update system controller node and its consumers
  mips: dts: ralink: rt3883: update system controller node and its consumers
  mips: dts: ralink: rt3050: update system controller node and its consumers
  mips: dts: ralink: rt2880: update system controller node and its consumers
  dt-bindings: clock: add clock definitions for Ralink SoCs
  MIPS: Use arch specific syscall name match function
  mips: dts: realtek: Add restart to Cisco SG220-26P
  mips: dts: realtek: Add RTL838x SoC peripherals
  mips: dts: realtek: Replace uart clock property
  mips: dts: realtek: Correct uart interrupt-parent
  mips: dts: realtek: Add SoC IRQ node for RTL838x
  ...
2025-03-29 12:47:09 -07:00
Linus Torvalds
ee6740fd34 Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull CRC updates from Eric Biggers:
 "Another set of improvements to the kernel's CRC (cyclic redundancy
  check) code:

   - Rework the CRC64 library functions to be directly optimized, like
     what I did last cycle for the CRC32 and CRC-T10DIF library
     functions

   - Rewrite the x86 PCLMULQDQ-optimized CRC code, and add VPCLMULQDQ
     support and acceleration for crc64_be and crc64_nvme

   - Rewrite the riscv Zbc-optimized CRC code, and add acceleration for
     crc_t10dif, crc64_be, and crc64_nvme

   - Remove crc_t10dif and crc64_rocksoft from the crypto API, since
     they are no longer needed there

   - Rename crc64_rocksoft to crc64_nvme, as the old name was incorrect

   - Add kunit test cases for crc64_nvme and crc7

   - Eliminate redundant functions for calculating the Castagnoli CRC32,
     settling on just crc32c()

   - Remove unnecessary prompts from some of the CRC kconfig options

   - Further optimize the x86 crc32c code"

* tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (36 commits)
  x86/crc: drop the avx10_256 functions and rename avx10_512 to avx512
  lib/crc: remove unnecessary prompt for CONFIG_CRC64
  lib/crc: remove unnecessary prompt for CONFIG_LIBCRC32C
  lib/crc: remove unnecessary prompt for CONFIG_CRC8
  lib/crc: remove unnecessary prompt for CONFIG_CRC7
  lib/crc: remove unnecessary prompt for CONFIG_CRC4
  lib/crc7: unexport crc7_be_syndrome_table
  lib/crc_kunit.c: update comment in crc_benchmark()
  lib/crc_kunit.c: add test and benchmark for crc7_be()
  x86/crc32: optimize tail handling for crc32c short inputs
  riscv/crc64: add Zbc optimized CRC64 functions
  riscv/crc-t10dif: add Zbc optimized CRC-T10DIF function
  riscv/crc32: reimplement the CRC32 functions using new template
  riscv/crc: add "template" for Zbc optimized CRC functions
  x86/crc: add ANNOTATE_NOENDBR to suppress objtool warnings
  x86/crc32: improve crc32c_arch() code generation with clang
  x86/crc64: implement crc64_be and crc64_nvme using new template
  x86/crc-t10dif: implement crc_t10dif using new template
  x86/crc32: implement crc32_le using new template
  x86/crc: add "template" for [V]PCLMULQDQ based CRC functions
  ...
2025-03-25 18:33:04 -07:00
Joris Vaisvila
855912be0b MIPS: config: omega2+, vocore2: enable CLK_MTMIPS
This commit enables the CLK_MTMIPS driver for omega2+ and vocore2
devices. This driver is required for these devices to boot properly.
Without it, the devices fail to obtain the CPU clock, resulting in a
kernel panic.

Signed-off-by: Joris Vaisvila <joey@tinyisr.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-03-25 21:35:54 +01:00
Johan Korsnes
355d63e5de arch: mips: defconfig: Drop obsolete CONFIG_NET_CLS_TCINDEX
This option was removed from the Kconfig in commit
8c710f7525 ("net/sched: Retire tcindex classifier") but it was not
removed from the defconfigs.

Fixes: 8c710f7525 ("net/sched: Retire tcindex classifier")
Signed-off-by: Johan Korsnes <johan.korsnes@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-03-25 20:28:57 +01:00
Dr. David Alan Gilbert
44356090d5 mfd: pcf50633: Remove remaining PCF50633 support
Remove the remaining parts of the 50633, the core, headers and glue.

The pcf50633 was used as part of the OpenMoko devices but
the support for its main chip was recently removed in:
commit 61b7f8920b ("ARM: s3c: remove all s3c24xx support")

See https://lore.kernel.org/all/Z8z236h4B5A6Ki3D@gallifrey/

Remove it.

Signed-off-by: "Dr. David Alan Gilbert" <linux@treblig.org>
Link: https://lore.kernel.org/r/20250311014959.743322-10-linux@treblig.org
Signed-off-by: Lee Jones <lee@kernel.org>
2025-03-14 11:42:51 +00:00
Dr. David Alan Gilbert
8559602247 mfd: pcF50633-gpio: Remove unused driver
The pcf50633 was used as part of the OpenMoko devices but
the support for its main chip was recently removed in:
commit 61b7f8920b ("ARM: s3c: remove all s3c24xx support")

See https://lore.kernel.org/all/Z8z236h4B5A6Ki3D@gallifrey/

Remove it.

Signed-off-by: "Dr. David Alan Gilbert" <linux@treblig.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250311014959.743322-4-linux@treblig.org
Signed-off-by: Lee Jones <lee@kernel.org>
2025-03-14 11:42:35 +00:00
Dr. David Alan Gilbert
0d0e549538 mfd: pcf50633-adc: Remove unused driver
The pcf50633 was used as part of the OpenMoko devices but
the support for its main chip was recently removed in:
commit 61b7f8920b ("ARM: s3c: remove all s3c24xx support")

See https://lore.kernel.org/all/Z8z236h4B5A6Ki3D@gallifrey/

Remove it.

Signed-off-by: "Dr. David Alan Gilbert" <linux@treblig.org>
Link: https://lore.kernel.org/r/20250311014959.743322-2-linux@treblig.org
Signed-off-by: Lee Jones <lee@kernel.org>
2025-03-14 11:42:26 +00:00
Eric Biggers
dce214db5d lib/crc: remove unnecessary prompt for CONFIG_LIBCRC32C
All modules that need CONFIG_LIBCRC32C already select it, so there is no
need to bother users about the option.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250304230712.167600-5-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
2025-03-10 09:29:29 -07:00
Eric Biggers
f5a40fcf82 lib/crc: remove unnecessary prompt for CONFIG_CRC7
All modules that need CONFIG_CRC7 already select it, so there is no need
to bother users about the option.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250304230712.167600-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
2025-03-10 09:29:29 -07:00
Jan Kara
448fa70158 sysv: Remove the filesystem
Since 2002 (change "Replace BKL for chain locking with sysvfs-private
rwlock") the sysv filesystem was doing IO under a rwlock in its
get_block() function (yes, a non-sleepable lock hold over a function
used to read inode metadata for all reads and writes).  Nobody noticed
until syzbot in 2023 [1]. This shows nobody is using the filesystem.
Just drop it.

[1] https://lore.kernel.org/all/0000000000000ccf9a05ee84f5b0@google.com/

Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20250220163940.10155-2-jack@suse.cz
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-02-21 10:32:47 +01:00
Eric Biggers
8522104f75 crypto: crct10dif - remove from crypto API
Remove the "crct10dif" shash algorithm from the crypto API.  It has no
known user now that the lib is no longer built on top of it.  It has no
remaining references in kernel code.  The only other potential users
would be the usual components that allow specifying arbitrary hash
algorithms by name, namely AF_ALG and dm-integrity.   However there are
no indications that "crct10dif" is being used with these components.
Debian Code Search and web searches don't find anything relevant, and
explicitly grepping the source code of the usual suspects (cryptsetup,
libell, iwd) finds no matches either.  "crc32" and "crc32c" are used in
a few more places, but that doesn't seem to be the case for "crct10dif".

crc_t10dif_update() is also tested by crc_kunit now, so the test
coverage provided via the crypto self-tests is no longer needed.

Also note that the "crct10dif" shash algorithm was inconsistent with the
rest of the shash API in that it wrote the digest in CPU endianness,
making the resulting byte array differ on little endian vs. big endian
platforms.  This means it was effectively just built for use by the lib
functions, and it was not actually correct to treat it as "just another
hash function" that could be dropped in via the shash API.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20250206173857.39794-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
2025-02-08 20:06:30 -08:00
Eric Biggers
79fbe85a03 lib/crc32: remove obsolete CRC32 options from defconfig files
Remove all remaining references to CONFIG_CRC32_BIT,
CONFIG_CRC32_SARWATE, CONFIG_CRC32_SLICEBY4, and CONFIG_CRC32_SLICEBY8.
These options no longer exist, now that we've standardized on a single
generic CRC32 implementation.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250205000424.75149-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
2025-02-08 20:06:30 -08:00
Linus Torvalds
454cb97726 Merge tag 'v6.14-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
 "API:
   - Remove physical address skcipher walking
   - Fix boot-up self-test race

  Algorithms:
   - Optimisations for x86/aes-gcm
   - Optimisations for x86/aes-xts
   - Remove VMAC
   - Remove keywrap

  Drivers:
   - Remove n2

  Others:
   - Fixes for padata UAF
   - Fix potential rhashtable deadlock by moving schedule_work outside
     lock"

* tag 'v6.14-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (75 commits)
  rhashtable: Fix rhashtable_try_insert test
  dt-bindings: crypto: qcom,inline-crypto-engine: Document the SM8750 ICE
  dt-bindings: crypto: qcom,prng: Document SM8750 RNG
  dt-bindings: crypto: qcom-qce: Document the SM8750 crypto engine
  crypto: asymmetric_keys - Remove unused key_being_used_for[]
  padata: avoid UAF for reorder_work
  padata: fix UAF in padata_reorder
  padata: add pd get/put refcnt helper
  crypto: skcipher - call cond_resched() directly
  crypto: skcipher - optimize initializing skcipher_walk fields
  crypto: skcipher - clean up initialization of skcipher_walk::flags
  crypto: skcipher - fold skcipher_walk_skcipher() into skcipher_walk_virt()
  crypto: skcipher - remove redundant check for SKCIPHER_WALK_SLOW
  crypto: skcipher - remove redundant clamping to page size
  crypto: skcipher - remove unnecessary page alignment of bounce buffer
  crypto: skcipher - document skcipher_walk_done() and rename some vars
  crypto: omap - switch from scatter_walk to plain offset
  crypto: powerpc/p10-aes-gcm - simplify handling of linear associated data
  crypto: bcm - Drop unused setting of local 'ptr' variable
  crypto: hisilicon/qm - support new function communication
  ...
2025-01-24 07:48:10 -08:00
Eric Biggers
730f67d8b8 crypto: keywrap - remove unused keywrap algorithm
The keywrap (kw) algorithm has no in-tree user.  It has never had an
in-tree user, and the patch that added it provided no justification for
its inclusion.  Even use of it via AF_ALG is impossible, as it uses a
weird calling convention where part of the ciphertext is returned via
the IV buffer, which is not returned to userspace in AF_ALG.

It's also unclear whether any new code in the kernel that does key
wrapping would actually use this algorithm.  It is controversial in the
cryptographic community due to having no clearly stated security goal,
no security proof, poor performance, and only a 64-bit auth tag.  Later
work (https://eprint.iacr.org/2006/221) suggested that the goal is
deterministic authenticated encryption.  But there are now more modern
algorithms for this, and this is not the same as key wrapping, for which
a regular AEAD such as AES-GCM usually can be (and is) used instead.

Therefore, remove this unused code.

There were several special cases for this algorithm in the self-tests,
due to its weird calling convention.  Remove those too.

Cc: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2025-01-04 08:53:47 +08:00
Eric Biggers
2890601f54 crypto: vmac - remove unused VMAC algorithm
Remove the vmac64 template, as it has no known users.  It also continues
to have longstanding bugs such as alignment violations (see
https://lore.kernel.org/r/20241226134847.6690-1-evepolonium@gmail.com/).

This code was added in 2009 by commit f1939f7c56 ("crypto: vmac - New
hash algorithm for intel_txt support").  Based on the mention of
intel_txt support in the commit title, it seems it was added as a
prerequisite for the contemporaneous patch
"intel_txt: add s3 userspace memory integrity verification"
(https://lore.kernel.org/r/4ABF2B50.6070106@intel.com/).  In the design
proposed by that patch, when an Intel Trusted Execution Technology (TXT)
enabled system resumed from suspend, the "tboot" trusted executable
launched the Linux kernel without verifying userspace memory, and then
the Linux kernel used VMAC to verify userspace memory.

However, that patch was never merged, as reviewers had objected to the
design.  It was later reworked into commit 4bd96a7a81 ("x86, tboot:
Add support for S3 memory integrity protection") which made tboot verify
the memory instead.  Thus the VMAC support in Linux was never used.

No in-tree user has appeared since then, other than potentially the
usual components that allow specifying arbitrary hash algorithms by
name, namely AF_ALG and dm-integrity.  However there are no indications
that VMAC is being used with these components.  Debian Code Search and
web searches for "vmac64" (the actual algorithm name) do not return any
results other than the kernel itself, suggesting that it does not appear
in any other code or documentation.  Explicitly grepping the source code
of the usual suspects (libell, iwd, cryptsetup) finds no matches either.

Before 2018, the vmac code was also completely broken due to using a
hardcoded nonce and the wrong endianness for the MAC.  It was then fixed
by commit ed331adab3 ("crypto: vmac - add nonced version with big
endian digest") and commit 0917b87312 ("crypto: vmac - remove insecure
version with hardcoded nonce").  These were intentionally breaking
changes that changed all the computed MAC values as well as the
algorithm name ("vmac" to "vmac64").  No complaints were ever received
about these breaking changes, strongly suggesting the absence of users.

The reason I had put some effort into fixing this code in 2018 is
because it was used by an out-of-tree driver.  But if it is still needed
in that particular out-of-tree driver, the code can be carried in that
driver instead.  There is no need to carry it upstream.

Cc: Atharva Tiwari <evepolonium@gmail.com>
Cc: Shane Wang <shane.wang@intel.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2025-01-04 08:52:03 +08:00