Commit Graph

4320 Commits

Author SHA1 Message Date
Marek Behún eeee5a710f net: sfp: Fix Ubiquiti U-Fiber Instant SFP module on mvneta
In commit 8110633db4 ("net: sfp-bus: allow SFP quirks to override
Autoneg and pause bits") we moved the setting of Autoneg and pause bits
before the call to SFP quirk when parsing SFP module support.

Since the quirk for Ubiquiti U-Fiber Instant SFP module zeroes the
support bits and sets 1000baseX_Full only, the above mentioned commit
changed the overall computed support from
  1000baseX_Full, Autoneg, Pause, Asym_Pause
to just
  1000baseX_Full.

This broke the SFP module for mvneta, which requires Autoneg for
1000baseX since commit c762b7fac1 ("net: mvneta: deny disabling
autoneg for 802.3z modes").

Fix this by setting back the Autoneg, Pause and Asym_Pause bits in the
quirk.

Fixes: 8110633db4 ("net: sfp-bus: allow SFP quirks to override Autoneg and pause bits")
Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20260326122038.2489589-1-kabel@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-27 20:55:52 -07:00
Álvaro Fernández Rojas 87d1268521 net: sfp: improve Huawei MA5671a fixup
With the current sfp_fixup_ignore_tx_fault() fixup we ignore the TX_FAULT
signal, but we also need to apply sfp_fixup_ignore_los() in order to be
able to communicate with the module even if the fiber isn't connected for
configuration purposes.
This is needed for all the MA5671a firmwares, excluding the FS modded
firmware.

Fixes: 2069624dac ("net: sfp: Add tx-fault workaround for Huawei MA5671A SFP ONT")
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20260306125139.213637-1-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-09 18:46:46 -07:00
Linus Torvalds b9c8fc2cae Including fixes from IPsec, Bluetooth and netfilter
Current release - regressions:
 
   - wifi: fix dev_alloc_name() return value check
 
   - rds: fix recursive lock in rds_tcp_conn_slots_available
 
 Current release - new code bugs:
 
   - vsock: lock down child_ns_mode as write-once
 
 Previous releases - regressions:
 
   - core:
     - do not pass flow_id to set_rps_cpu()
     - consume xmit errors of GSO frames
 
   - netconsole: avoid OOB reads, msg is not nul-terminated
 
   - netfilter: h323: fix OOB read in decode_choice()
 
   - tcp: re-enable acceptance of FIN packets when RWIN is 0
 
   - udplite: fix null-ptr-deref in __udp_enqueue_schedule_skb().
 
   - wifi: brcmfmac: fix potential kernel oops when probe fails
 
   - phy: register phy led_triggers during probe to avoid AB-BA deadlock
 
   - eth: bnxt_en: fix deleting of Ntuple filters
 
   - eth: wan: farsync: fix use-after-free bugs caused by unfinished tasklets
 
   - eth: xscale: check for PTP support properly
 
 Previous releases - always broken:
 
   - tcp: fix potential race in tcp_v6_syn_recv_sock()
 
   - kcm: fix zero-frag skb in frag_list on partial sendmsg error
 
   - xfrm:
     - fix race condition in espintcp_close()
     - always flush state and policy upon NETDEV_UNREGISTER event
 
   - bluetooth:
     - purge error queues in socket destructors
     - fix response to L2CAP_ECRED_CONN_REQ
 
   - eth: mlx5:
     - fix circular locking dependency in dump
     - fix "scheduling while atomic" in IPsec MAC address query
 
   - eth: gve: fix incorrect buffer cleanup for QPL
 
   - eth: team: avoid NETDEV_CHANGEMTU event when unregistering slave
 
   - eth: usb: validate USB endpoints
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from IPsec, Bluetooth and netfilter

  Current release - regressions:

   - wifi: fix dev_alloc_name() return value check

   - rds: fix recursive lock in rds_tcp_conn_slots_available

  Current release - new code bugs:

   - vsock: lock down child_ns_mode as write-once

  Previous releases - regressions:

   - core:
      - do not pass flow_id to set_rps_cpu()
      - consume xmit errors of GSO frames

   - netconsole: avoid OOB reads, msg is not nul-terminated

   - netfilter: h323: fix OOB read in decode_choice()

   - tcp: re-enable acceptance of FIN packets when RWIN is 0

   - udplite: fix null-ptr-deref in __udp_enqueue_schedule_skb().

   - wifi: brcmfmac: fix potential kernel oops when probe fails

   - phy: register phy led_triggers during probe to avoid AB-BA deadlock

   - eth:
      - bnxt_en: fix deleting of Ntuple filters
      - wan: farsync: fix use-after-free bugs caused by unfinished tasklets
      - xscale: check for PTP support properly

  Previous releases - always broken:

   - tcp: fix potential race in tcp_v6_syn_recv_sock()

   - kcm: fix zero-frag skb in frag_list on partial sendmsg error

   - xfrm:
      - fix race condition in espintcp_close()
      - always flush state and policy upon NETDEV_UNREGISTER event

   - bluetooth:
      - purge error queues in socket destructors
      - fix response to L2CAP_ECRED_CONN_REQ

   - eth:
      - mlx5:
         - fix circular locking dependency in dump
         - fix "scheduling while atomic" in IPsec MAC address query
      - gve: fix incorrect buffer cleanup for QPL
      - team: avoid NETDEV_CHANGEMTU event when unregistering slave
      - usb: validate USB endpoints"

* tag 'net-7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (72 commits)
  netfilter: nf_conntrack_h323: fix OOB read in decode_choice()
  dpaa2-switch: validate num_ifs to prevent out-of-bounds write
  net: consume xmit errors of GSO frames
  vsock: document write-once behavior of the child_ns_mode sysctl
  vsock: lock down child_ns_mode as write-once
  selftests/vsock: change tests to respect write-once child ns mode
  net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query
  net/mlx5: Fix missing devlink lock in SRIOV enable error path
  net/mlx5: E-switch, Clear legacy flag when moving to switchdev
  net/mlx5: LAG, disable MPESW in lag_disable_change()
  net/mlx5: DR, Fix circular locking dependency in dump
  selftests: team: Add a reference count leak test
  team: avoid NETDEV_CHANGEMTU event when unregistering slave
  net: mana: Fix double destroy_workqueue on service rescan PCI path
  MAINTAINERS: Update maintainer entry for QUALCOMM ETHQOS ETHERNET DRIVER
  dpll: zl3073x: Remove redundant cleanup in devm_dpll_init()
  selftests/net: packetdrill: Verify acceptance of FIN packets when RWIN is 0
  tcp: re-enable acceptance of FIN packets when RWIN is 0
  vsock: Use container_of() to get net namespace in sysctl handlers
  net: usb: kaweth: validate USB endpoints
  ...
2026-02-26 08:00:13 -08:00
Andrew Lunn c8dbdc6e38 net: phy: register phy led_triggers during probe to avoid AB-BA deadlock
There is an AB-BA deadlock when both LEDS_TRIGGER_NETDEV and
LED_TRIGGER_PHY are enabled:

[ 1362.049207] [<8054e4b8>] led_trigger_register+0x5c/0x1fc             <-- Trying to get lock "triggers_list_lock" via down_write(&triggers_list_lock);
[ 1362.054536] [<80662830>] phy_led_triggers_register+0xd0/0x234
[ 1362.060329] [<8065e200>] phy_attach_direct+0x33c/0x40c
[ 1362.065489] [<80651fc4>] phylink_fwnode_phy_connect+0x15c/0x23c
[ 1362.071480] [<8066ee18>] mtk_open+0x7c/0xba0
[ 1362.075849] [<806d714c>] __dev_open+0x280/0x2b0
[ 1362.080384] [<806d7668>] __dev_change_flags+0x244/0x24c
[ 1362.085598] [<806d7698>] dev_change_flags+0x28/0x78
[ 1362.090528] [<807150e4>] dev_ioctl+0x4c0/0x654                       <-- Hold lock "rtnl_mutex" by calling rtnl_lock();
[ 1362.094985] [<80694360>] sock_ioctl+0x2f4/0x4e0
[ 1362.099567] [<802e9c4c>] sys_ioctl+0x32c/0xd8c
[ 1362.104022] [<80014504>] syscall_common+0x34/0x58

Here LED_TRIGGER_PHY is registering LED triggers during phy_attach
while holding RTNL and then taking triggers_list_lock.

[ 1362.191101] [<806c2640>] register_netdevice_notifier+0x60/0x168      <-- Trying to get lock "rtnl_mutex" via rtnl_lock();
[ 1362.197073] [<805504ac>] netdev_trig_activate+0x194/0x1e4
[ 1362.202490] [<8054e28c>] led_trigger_set+0x1d4/0x360                 <-- Hold lock "triggers_list_lock" by down_read(&triggers_list_lock);
[ 1362.207511] [<8054eb38>] led_trigger_write+0xd8/0x14c
[ 1362.212566] [<80381d98>] sysfs_kf_bin_write+0x80/0xbc
[ 1362.217688] [<8037fcd8>] kernfs_fop_write_iter+0x17c/0x28c
[ 1362.223174] [<802cbd70>] vfs_write+0x21c/0x3c4
[ 1362.227712] [<802cc0c4>] ksys_write+0x78/0x12c
[ 1362.232164] [<80014504>] syscall_common+0x34/0x58

Here LEDS_TRIGGER_NETDEV is being enabled on an LED. It first takes
triggers_list_lock and then RTNL. A classical AB-BA deadlock.

phy_led_triggers_registers() does not require the RTNL, it does not
make any calls into the network stack which require protection. There
is also no requirement the PHY has been attached to a MAC, the
triggers only make use of phydev state. This allows the call to
phy_led_triggers_registers() to be placed elsewhere. PHY probe() and
release() don't hold RTNL, so solving the AB-BA deadlock.

Reported-by: Shiji Yang <yangshiji66@outlook.com>
Closes: https://lore.kernel.org/all/OS7PR01MB13602B128BA1AD3FA38B6D1FFBC69A@OS7PR01MB13602.jpnprd01.prod.outlook.com/
Fixes: 06f502f57d ("leds: trigger: Introduce a NETDEV trigger")
Cc: stable@vger.kernel.org
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Shiji Yang <yangshiji66@outlook.com>
Link: https://patch.msgid.link/20260222152601.1978655-1-andrew@lunn.ch
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-24 12:39:54 +01:00
Kees Cook 189f164e57 Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
Conversion performed via this Coccinelle script:

  // SPDX-License-Identifier: GPL-2.0-only
  // Options: --include-headers-for-types --all-includes --include-headers --keep-comments
  virtual patch

  @gfp depends on patch && !(file in "tools") && !(file in "samples")@
  identifier ALLOC = {kmalloc_obj,kmalloc_objs,kmalloc_flex,
 		    kzalloc_obj,kzalloc_objs,kzalloc_flex,
		    kvmalloc_obj,kvmalloc_objs,kvmalloc_flex,
		    kvzalloc_obj,kvzalloc_objs,kvzalloc_flex};
  @@

  	ALLOC(...
  -		, GFP_KERNEL
  	)

  $ make coccicheck MODE=patch COCCI=gfp.cocci

Build and boot tested x86_64 with Fedora 42's GCC and Clang:

Linux version 6.19.0+ (user@host) (gcc (GCC) 15.2.1 20260123 (Red Hat 15.2.1-7), GNU ld version 2.44-12.fc42) #1 SMP PREEMPT_DYNAMIC 1970-01-01
Linux version 6.19.0+ (user@host) (clang version 20.1.8 (Fedora 20.1.8-4.fc42), LLD 20.1.8) #1 SMP PREEMPT_DYNAMIC 1970-01-01

Signed-off-by: Kees Cook <kees@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-22 08:26:33 -08:00
Linus Torvalds bf4afc53b7 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
This was done entirely with mindless brute force, using

    git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
        xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'

to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.

Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.

For the same reason the 'flex' versions will be done as a separate
conversion.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-21 17:09:51 -08:00
Kees Cook 69050f8d6d treewide: Replace kmalloc with kmalloc_obj for non-scalar types
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:

Single allocations:	kmalloc(sizeof(TYPE), ...)
are replaced with:	kmalloc_obj(TYPE, ...)

Array allocations:	kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with:	kmalloc_objs(TYPE, COUNT, ...)

Flex array allocations:	kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with:	kmalloc_flex(*PTR, FAM, COUNT, ...)

(where TYPE may also be *VAR)

The resulting allocations no longer return "void *", instead returning
"TYPE *".

Signed-off-by: Kees Cook <kees@kernel.org>
2026-02-21 01:02:28 -08:00
Dmitry Torokhov 2bb995e615 net: phy: qcom: qca807x: normalize return value of gpio_get
The GPIO get callback is expected to return 0 or 1 (or a negative error
code). Ensure that the value returned by qca807x_gpio_get() is
normalized to the [0, 1] range.

Fixes: 86ef402d80 ("gpiolib: sanitize the return value of gpio_chip::get()")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/aZZeyr2ysqqk2GqA@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-20 16:09:07 -08:00
Maxime Chevallier 4cebb26ac6 net: phy: phy_port: Correctly recompute the port's linkmodes
a PHY-driven phy_port contains a 'supported' field containing the
linkmodes available on this port. This is populated based on :
 - The PHY's reported features
 - The DT representation of the connector
 - The PHY's attach_mdi() callback

As these different attrbution methods work in conjunction, the helper
phy_port_update_supported() recomputes the final 'supported' value based
on the populated mediums, linkmodes and pairs.

However this recompute wasn't correctly implemented, and added more
modes than necessary by or'ing the medium-specific modes to the existing
support. Let's fix this and properly filter the modes.

Fixes: 589e934d27 ("net: phy: Introduce PHY ports representation")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Link: https://patch.msgid.link/20260205092317.755906-4-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-12 17:44:55 -08:00
Maxime Chevallier 6248f3dc4e net: phy: phy_port: Cleanup the of-parsing logic for phy_port
We don't need to maintain a mediums bitfield, let's drop it and drop a
bogus check for empty mediums, as we already check it above.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Link: https://patch.msgid.link/20260205092317.755906-3-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-12 17:44:55 -08:00
Maxime Chevallier 0561667105 net: phy: initialize the port support based on the PHY's for OF ports
With the phy_port infrastructure came an ethernet-connector binding,
allowing to represent the MDI of a PHY in devicetree. This allows
specifying the mediums and pairs of a port.

Let's initialize the port's supported list based on what the PHY
reports, so that we can then filter it with what the connector allows
using.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Link: https://patch.msgid.link/20260205092317.755906-2-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-12 17:44:55 -08:00
Linus Torvalds 37a93dd5c4 Networking changes for 7.0
Core & protocols
 ----------------
 
  - A significant effort all around the stack to guide the compiler to
    make the right choice when inlining code, to avoid unneeded calls for
    small helper and stack canary overhead in the fast-path. This
    generates better and faster code with very small or no text size
    increases, as in many cases the call generated more code than the
    actual inlined helper.
 
  - Extend AccECN implementation so that is now functionally complete,
    also allow the user-space enabling it on a per network namespace
    basis.
 
  - Add support for memory providers with large (above 4K) rx buffer.
    Paired with hw-gro, larger rx buffer sizes reduce the number of
    buffers traversing the stack, dincreasing single stream CPU usage by
    up to ~30%.
 
  - Do not add HBH header to Big TCP GSO packets. This simplifies the RX
    path, the TX path and the NIC drivers, and is possible because
    user-space taps can now interpret correctly such packets without the
    HBH hint.
 
  - Allow IPv6 routes to be configured with a gateway address that is
    resolved out of a different interface than the one specified, aligning
    IPv6 to IPv4 behavior.
 
  - Multi-queue aware sch_cake. This makes it possible to scale the rate
    shaper of sch_cake across multiple CPUs, while still enforcing a
    single global rate on the interface.
 
  - Add support for the nbcon (new buffer console) infrastructure to
    netconsole, enabling lock-free, priority-based console operations that
    are safer in crash scenarios.
 
  - Improve the TCP ipv6 output path to cache the flow information, saving
    cpu cycles, reducing cache line misses and stack use.
 
  - Improve netfilter packet tracker to resolve clashes for most protocols,
    avoiding unneeded drops on rare occasions.
 
  - Add IP6IP6 tunneling acceleration to the flowtable infrastructure.
 
  - Reduce tcp socket size by one cache line.
 
  - Notify neighbour changes atomically, avoiding inconsistencies between
    the notification sequence and the actual states sequence.
 
  - Add vsock namespace support, allowing complete isolation of vsocks
    across different network namespaces.
 
  - Improve xsk generic performances with cache-alignment-oriented
    optimizations.
 
  - Support netconsole automatic target recovery, allowing netconsole
    to reestablish targets when underlying low-level interface comes back
    online.
 
 Driver API
 ----------
 
  - Support for switching the working mode (automatic vs manual) of a DPLL
    device via netlink.
 
  - Introduce PHY ports representation to expose multiple front-facing
    media ports over a single MAC.
 
  - Introduce "rx-polarity" and "tx-polarity" device tree properties, to
    generalize polarity inversion requirements for differential signaling.
 
  - Add helper to create, prepare and enable managed clocks.
 
 Device drivers
 --------------
 
  - Add Huawei hinic3 PF etherner driver.
 
  - Add DWMAC glue driver for Motorcomm YT6801 PCIe ethernet controller.
 
  - Add ethernet driver for MaxLinear MxL862xx switches
 
  - Remove parallel-port Ethernet driver.
 
  - Convert existing driver timestamp configuration reporting to
    hwtstamp_get and remove legacy ioctl().
 
  - Convert existing drivers to .get_rx_ring_count(), simplifing the RX
    ring count retrieval. Also remove the legacy fallback path.
 
  - Ethernet high-speed NICs:
    - Broadcom (bnxt, bng):
      - bnxt: add FW interface update to support FEC stats histogram and
        NVRAM defragmentation
      - bng: add TSO and H/W GRO support
    - nVidia/Mellanox (mlx5):
      - improve latency of channel restart operations, reducing the used
        H/W resources
      - add TSO support for UDP over GRE over VLAN
      - add flow counters support for hardware steering (HWS) rules
      - use a static memory area to store headers for H/W GRO, leading to
        12% RX tput improvement
    - Intel (100G, ice, idpf):
      - ice: reorganizes layout of Tx and Rx rings for cacheline
        locality and utilizes __cacheline_group* macros on the new layouts
      - ice: introduces Synchronous Ethernet (SyncE) support
    - Meta (fbnic):
      - adds debugfs for firmware mailbox and tx/rx rings vectors
 
  - Ethernet virtual:
    - geneve: introduce GRO/GSO support for double UDP encapsulation
 
  - Ethernet NICs consumer, and embedded:
    - Synopsys (stmmac):
      - some code refactoring and cleanups
    - RealTek (r8169):
      - add support for RTL8127ATF (10G Fiber SFP)
      - add dash and LTR support
    - Airoha:
      - AN8811HB 2.5 Gbps phy support
    - Freescale (fec):
      - add XDP zero-copy support
    - Thunderbolt:
      - add get link setting support to allow bonding
    - Renesas:
      - add support for RZ/G3L GBETH SoC
 
  - Ethernet switches:
    - Maxlinear:
      - support R(G)MII slow rate configuration
      - add support for Intel GSW150
    - Motorcomm (yt921x):
      - add DCB/QoS support
    - TI:
      - icssm-prueth: support bridging (STP/RSTP) via the switchdev
        framework
 
  - Ethernet PHYs:
    - Realtek:
      - enable SGMII and 2500Base-X in-band auto-negotiation
      - simplify and reunify C22/C45 drivers
    - Micrel: convert bindings to DT schema
 
  - CAN:
    - move skb headroom content into skb extensions, making CAN metadata
      access more robust
 
  - CAN drivers:
    - rcar_canfd:
      - add support for FD-only mode
      - add support for the RZ/T2H SoC
    - sja1000: cleanup the CAN state handling
 
  - WiFi:
    - implement EPPKE/802.1X over auth frames support
    - split up drop reasons better, removing generic RX_DROP
    - additional FTM capabilities: 6 GHz support, supported number of
      spatial streams and supported number of LTF repetitions
    - better mac80211 iterators to enumerate resources
    - initial UHR (Wi-Fi 8) support for cfg80211/mac80211
 
  - WiFi drivers:
    - Qualcomm/Atheros:
      - ath11k: support for Channel Frequency Response measurement
      - ath12k: a significant driver refactor to support
        multi-wiphy devices and and pave the way for future device support
        in the same driver (rather than splitting to ath13k)
      - ath12k: support for the QCC2072 chipset
    - Intel:
      - iwlwifi: partial Neighbor Awareness Networking (NAN) support
      - iwlwifi: initial support for U-NII-9 and IEEE 802.11bn
    - RealTek (rtw89):
      - preparations for RTL8922DE support
 
  - Bluetooth:
    - implement setsockopt(BT_PHY) to set the connection packet type/PHY
    - set link_policy on incoming ACL connections
 
  - Bluetooth drivers:
    - btusb: add support for MediaTek7920, Realtek RTL8761BU and 8851BE
    - btqca: add WCN6855 firmware priority selection feature
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "Core & protocols:

   - A significant effort all around the stack to guide the compiler to
     make the right choice when inlining code, to avoid unneeded calls
     for small helper and stack canary overhead in the fast-path.

     This generates better and faster code with very small or no text
     size increases, as in many cases the call generated more code than
     the actual inlined helper.

   - Extend AccECN implementation so that is now functionally complete,
     also allow the user-space enabling it on a per network namespace
     basis.

   - Add support for memory providers with large (above 4K) rx buffer.
     Paired with hw-gro, larger rx buffer sizes reduce the number of
     buffers traversing the stack, dincreasing single stream CPU usage
     by up to ~30%.

   - Do not add HBH header to Big TCP GSO packets. This simplifies the
     RX path, the TX path and the NIC drivers, and is possible because
     user-space taps can now interpret correctly such packets without
     the HBH hint.

   - Allow IPv6 routes to be configured with a gateway address that is
     resolved out of a different interface than the one specified,
     aligning IPv6 to IPv4 behavior.

   - Multi-queue aware sch_cake. This makes it possible to scale the
     rate shaper of sch_cake across multiple CPUs, while still enforcing
     a single global rate on the interface.

   - Add support for the nbcon (new buffer console) infrastructure to
     netconsole, enabling lock-free, priority-based console operations
     that are safer in crash scenarios.

   - Improve the TCP ipv6 output path to cache the flow information,
     saving cpu cycles, reducing cache line misses and stack use.

   - Improve netfilter packet tracker to resolve clashes for most
     protocols, avoiding unneeded drops on rare occasions.

   - Add IP6IP6 tunneling acceleration to the flowtable infrastructure.

   - Reduce tcp socket size by one cache line.

   - Notify neighbour changes atomically, avoiding inconsistencies
     between the notification sequence and the actual states sequence.

   - Add vsock namespace support, allowing complete isolation of vsocks
     across different network namespaces.

   - Improve xsk generic performances with cache-alignment-oriented
     optimizations.

   - Support netconsole automatic target recovery, allowing netconsole
     to reestablish targets when underlying low-level interface comes
     back online.

  Driver API:

   - Support for switching the working mode (automatic vs manual) of a
     DPLL device via netlink.

   - Introduce PHY ports representation to expose multiple front-facing
     media ports over a single MAC.

   - Introduce "rx-polarity" and "tx-polarity" device tree properties,
     to generalize polarity inversion requirements for differential
     signaling.

   - Add helper to create, prepare and enable managed clocks.

  Device drivers:

   - Add Huawei hinic3 PF etherner driver.

   - Add DWMAC glue driver for Motorcomm YT6801 PCIe ethernet
     controller.

   - Add ethernet driver for MaxLinear MxL862xx switches

   - Remove parallel-port Ethernet driver.

   - Convert existing driver timestamp configuration reporting to
     hwtstamp_get and remove legacy ioctl().

   - Convert existing drivers to .get_rx_ring_count(), simplifing the RX
     ring count retrieval. Also remove the legacy fallback path.

   - Ethernet high-speed NICs:
      - Broadcom (bnxt, bng):
         - bnxt: add FW interface update to support FEC stats histogram
           and NVRAM defragmentation
         - bng: add TSO and H/W GRO support
      - nVidia/Mellanox (mlx5):
         - improve latency of channel restart operations, reducing the
           used H/W resources
         - add TSO support for UDP over GRE over VLAN
         - add flow counters support for hardware steering (HWS) rules
         - use a static memory area to store headers for H/W GRO,
           leading to 12% RX tput improvement
      - Intel (100G, ice, idpf):
         - ice: reorganizes layout of Tx and Rx rings for cacheline
           locality and utilizes __cacheline_group* macros on the new
           layouts
         - ice: introduces Synchronous Ethernet (SyncE) support
      - Meta (fbnic):
         - adds debugfs for firmware mailbox and tx/rx rings vectors

   - Ethernet virtual:
      - geneve: introduce GRO/GSO support for double UDP encapsulation

   - Ethernet NICs consumer, and embedded:
      - Synopsys (stmmac):
         - some code refactoring and cleanups
      - RealTek (r8169):
         - add support for RTL8127ATF (10G Fiber SFP)
         - add dash and LTR support
      - Airoha:
         - AN8811HB 2.5 Gbps phy support
      - Freescale (fec):
         - add XDP zero-copy support
      - Thunderbolt:
         - add get link setting support to allow bonding
      - Renesas:
         - add support for RZ/G3L GBETH SoC

   - Ethernet switches:
      - Maxlinear:
         - support R(G)MII slow rate configuration
         - add support for Intel GSW150
      - Motorcomm (yt921x):
         - add DCB/QoS support
      - TI:
         - icssm-prueth: support bridging (STP/RSTP) via the switchdev
           framework

   - Ethernet PHYs:
      - Realtek:
         - enable SGMII and 2500Base-X in-band auto-negotiation
         - simplify and reunify C22/C45 drivers
      - Micrel: convert bindings to DT schema

   - CAN:
      - move skb headroom content into skb extensions, making CAN
        metadata access more robust

   - CAN drivers:
      - rcar_canfd:
         - add support for FD-only mode
         - add support for the RZ/T2H SoC
      - sja1000: cleanup the CAN state handling

   - WiFi:
      - implement EPPKE/802.1X over auth frames support
      - split up drop reasons better, removing generic RX_DROP
      - additional FTM capabilities: 6 GHz support, supported number of
        spatial streams and supported number of LTF repetitions
      - better mac80211 iterators to enumerate resources
      - initial UHR (Wi-Fi 8) support for cfg80211/mac80211

   - WiFi drivers:
      - Qualcomm/Atheros:
         - ath11k: support for Channel Frequency Response measurement
         - ath12k: a significant driver refactor to support multi-wiphy
           devices and and pave the way for future device support in the
           same driver (rather than splitting to ath13k)
         - ath12k: support for the QCC2072 chipset
      - Intel:
         - iwlwifi: partial Neighbor Awareness Networking (NAN) support
         - iwlwifi: initial support for U-NII-9 and IEEE 802.11bn
      - RealTek (rtw89):
         - preparations for RTL8922DE support

   - Bluetooth:
      - implement setsockopt(BT_PHY) to set the connection packet type/PHY
      - set link_policy on incoming ACL connections

   - Bluetooth drivers:
      - btusb: add support for MediaTek7920, Realtek RTL8761BU and 8851BE
      - btqca: add WCN6855 firmware priority selection feature"

* tag 'net-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1254 commits)
  bnge/bng_re: Add a new HSI
  net: macb: Fix tx/rx malfunction after phy link down and up
  af_unix: Fix memleak of newsk in unix_stream_connect().
  net: ti: icssg-prueth: Add optional dependency on HSR
  net: dsa: add basic initial driver for MxL862xx switches
  net: mdio: add unlocked mdiodev C45 bus accessors
  net: dsa: add tag format for MxL862xx switches
  dt-bindings: net: dsa: add MaxLinear MxL862xx
  selftests: drivers: net: hw: Modify toeplitz.c to poll for packets
  octeontx2-pf: Unregister devlink on probe failure
  net: renesas: rswitch: fix forwarding offload statemachine
  ionic: Rate limit unknown xcvr type messages
  tcp: inet6_csk_xmit() optimization
  tcp: populate inet->cork.fl.u.ip6 in tcp_v6_syn_recv_sock()
  tcp: populate inet->cork.fl.u.ip6 in tcp_v6_connect()
  ipv6: inet6_csk_xmit() and inet6_csk_update_pmtu() use inet->cork.fl.u.ip6
  ipv6: use inet->cork.fl.u.ip6 and np->final in ip6_datagram_dst_update()
  ipv6: use np->final in inet6_sk_rebuild_header()
  ipv6: add daddr/final storage in struct ipv6_pinfo
  net: stmmac: qcom-ethqos: fix qcom_ethqos_serdes_powerup()
  ...
2026-02-11 19:31:52 -08:00
Linus Torvalds 13d83ea9d8 Crypto library updates for 7.0
- Add support for verifying ML-DSA signatures.
 
   ML-DSA (Module-Lattice-Based Digital Signature Algorithm) is a
   recently-standardized post-quantum (quantum-resistant) signature
   algorithm. It was known as Dilithium pre-standardization.
 
   The first use case in the kernel will be module signing. But there
   are also other users of RSA and ECDSA signatures in the kernel that
   might want to upgrade to ML-DSA eventually.
 
 - Improve the AES library:
 
     - Make the AES key expansion and single block encryption and
       decryption functions use the architecture-optimized AES code.
       Enable these optimizations by default.
 
     - Support preparing an AES key for encryption-only, using about
       half as much memory as a bidirectional key.
 
     - Replace the existing two generic implementations of AES with a
       single one.
 
 - Simplify how Adiantum message hashing is implemented. Remove the
   "nhpoly1305" crypto_shash in favor of direct lib/crypto/ support for
   NH hashing, and enable optimizations by default.
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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 support for verifying ML-DSA signatures.

   ML-DSA (Module-Lattice-Based Digital Signature Algorithm) is a
   recently-standardized post-quantum (quantum-resistant) signature
   algorithm. It was known as Dilithium pre-standardization.

   The first use case in the kernel will be module signing. But there
   are also other users of RSA and ECDSA signatures in the kernel that
   might want to upgrade to ML-DSA eventually.

 - Improve the AES library:

     - Make the AES key expansion and single block encryption and
       decryption functions use the architecture-optimized AES code.
       Enable these optimizations by default.

     - Support preparing an AES key for encryption-only, using about
       half as much memory as a bidirectional key.

     - Replace the existing two generic implementations of AES with a
       single one.

 - Simplify how Adiantum message hashing is implemented. Remove the
   "nhpoly1305" crypto_shash in favor of direct lib/crypto/ support for
   NH hashing, and enable optimizations by default.

* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (53 commits)
  lib/crypto: mldsa: Clarify the documentation for mldsa_verify() slightly
  lib/crypto: aes: Drop 'volatile' from aes_sbox and aes_inv_sbox
  lib/crypto: aes: Remove old AES en/decryption functions
  lib/crypto: aesgcm: Use new AES library API
  lib/crypto: aescfb: Use new AES library API
  crypto: omap - Use new AES library API
  crypto: inside-secure - Use new AES library API
  crypto: drbg - Use new AES library API
  crypto: crypto4xx - Use new AES library API
  crypto: chelsio - Use new AES library API
  crypto: ccp - Use new AES library API
  crypto: x86/aes-gcm - Use new AES library API
  crypto: arm64/ghash - Use new AES library API
  crypto: arm/ghash - Use new AES library API
  staging: rtl8723bs: core: Use new AES library API
  net: phy: mscc: macsec: Use new AES library API
  chelsio: Use new AES library API
  Bluetooth: SMP: Use new AES library API
  crypto: x86/aes - Remove the superseded AES-NI crypto_cipher
  lib/crypto: x86/aes: Add AES-NI optimization
  ...
2026-02-10 08:31:09 -08:00
Jakub Kicinski a182a62ff7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.19-rc9).

No adjacent changes, conflicts:

drivers/net/ethernet/spacemit/k1_emac.c
  3125fc1701 ("net: spacemit: k1-emac: fix jumbo frame support")
  f66086798f ("net: spacemit: Remove broken flow control support")
https://lore.kernel.org/aYIysFIE9ooavWia@sirena.org.uk

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-05 09:54:08 -08:00
Heiner Kallweit 3051419f3d net: phy: remove modalias-based mdio bus matching
Last user dsa_loop has been migrated away from modalias-based matching,
so we can remove this feature now. It was the only user of MDIO_NAME_SIZE,
so remove also this constant.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/ce1c6df0-4785-4b28-8322-32dc6bceea18@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-03 12:46:55 +01:00
Sean Anderson 3d0721cfcf net: phy: dp83867: Always program R/SGMII enable bits
If the board designers have neglected to populate the appropriate
resistors on the strapping pins then the phy may default to the wrong
interface mode. Enable/disable the RGMII/SGMII enable bits as necessary
to select the correct interface.

The dp83867 strapping pins have four levels and typically configure two
features at once. LED_0 controls both port mirroring and whether SGMII
is enabled. If it is pulled to VDDIO, both port mirroring and SGMII
will be enabled. For variants of the dp83867 that do not support SGMII,
this will prevent data from being transferred. As we now explicitly set
the SGMII and RGMII enable bits, we do not need to detect whether SGMII
has been inadvertently enabled.

Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20260129171205.3868605-3-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-02 17:19:53 -08:00
Sean Anderson d700b2a440 net: phy: dp83867: Program TX FIFO for all interfaces
All supported interfaces use the TX FIFO register at least some of the
time, so there's no point in checking the interface. Retain the check
for the RX FIFO level since it is only used by SGMII.

Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20260129171205.3868605-2-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-02 17:19:53 -08:00
Marek Behún adcbadfd8e net: sfp: Fix quirk for Ubiquiti U-Fiber Instant SFP module
Commit fd580c9830 ("net: sfp: augment SFP parsing with
phy_interface_t bitmap") did not add augumentation for the interface
bitmap in the quirk for Ubiquiti U-Fiber Instant.

The subsequent commit f81fa96d8a ("net: phylink: use
phy_interface_t bitmaps for optical modules") then changed phylink code
for selection of SFP interface: instead of using link mode bitmap, the
interface bitmap is used, and the fastest interface mode supported by
both SFP module and MAC is chosen.

Since the interface bitmap contains also modes faster than 1000base-x,
this caused a regression wherein this module stopped working
out-of-the-box.

Fix this.

Fixes: fd580c9830 ("net: sfp: augment SFP parsing with phy_interface_t bitmap")
Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20260129082227.17443-1-kabel@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-30 17:19:37 -08:00
Marek Behún 86a8e8e0dd net: sfp: add quirk for Lantech 8330-265D
Similar to Lantech 8330-262D-E, the Lantech 8330-265D also reports
2500MBd instead of 3125MBd.

Also, all 8330-265D report normal RX_LOS in EEPROM, but some signal
inverted RX_LOS. We therefore need to ignore RX_LOS on these modules.

Signed-off-by: Marek Behún <kabel@kernel.org>
Link: https://patch.msgid.link/20260128170044.15576-1-kabel@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-29 19:39:56 -08:00
Bjørn Mork 0a55766b77 net: phy: air_en8811h: Add clk provider for an8811hb
Implement clk provider driver so we can disable the clock output when it
isn't needed. This helps to reduce EMF noise

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Link: https://patch.msgid.link/20260127125547.1475164-4-bjorn@mork.no
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-29 19:15:46 -08:00
Bjørn Mork 5afda1d734 net: phy: air_en8811h: add Airoha AN8811HB support
The Airoha AN8811HB is mostly compatible with the EN8811H, adding 10Base-T
support and reducing power consumption.

This driver is based on the air_an8811hb v0.0.4 out-of-tree driver
written by "Lucien.Jheng <lucien.jheng@airoha.com>"

Firmware is available in linux-firmware. The driver has been tested with
firmware version 25110702

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Link: https://patch.msgid.link/20260127125547.1475164-3-bjorn@mork.no
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-29 19:15:46 -08:00
Bjørn Mork 28693bceee net: phy: air_en8811h: factor out shareable code
Create reusable helpers in preparation for the AN8811HB support.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Link: https://patch.msgid.link/20260127125547.1475164-2-bjorn@mork.no
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-29 19:15:46 -08:00
Russell King (Oracle) 0e4d7df2f3 net: phylink: fix NULL pointer deref in phylink_major_config()
When a MAC driver returns a PCS for an interface mode, and then we
attempt to switch to a different mode that doesn't require a PCS,
this causes phylink to oops:

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
Mem abort info:
  ESR = 0x0000000096000044
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x04: level 0 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000044, ISS2 = 0x00000000
  CM = 0, WnR = 1, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=0000000137f96000
[0000000000000010] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000044 [#1]  SMP
Modules linked in: --
CPU: 1 UID: 0 PID: 55 Comm: kworker/u33:0 Not tainted 6.19.0-rc5-00581-g73cb8467a63e #1 PREEMPT
Hardware name: Qualcomm Technologies, Inc. Lemans Ride Rev3 (DT)
Workqueue: events_power_efficient phylink_resolve
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS    +BTYPE=--)
pc : phylink_major_config+0x408/0x948
lr : phylink_major_config+0x3fc/0x948
sp : ffff800080353c60
x29: ffff800080353cb0 x28: ffffb305068a8a00 x27: ffffb305068a8000
x26: ffff000080092100 x25: 0000000000000000 x24: 0000000000000000
x23: 0000000000000001 x22: 0000000000000000 x21: ffffb3050555b3d0
x20: ffff800080353d10 x19: ffff0000b6059400 x18: 00000000ffffffff
x17: 74756f2f79687020 x16: ffffb305045e4f18 x15: 6769666e6f632072
x14: 6f6a616d203a3168 x13: 782d657361623030 x12: ffffb305068c6a98
x11: 0000000000000583 x10: 0000000000000018 x9 : ffffb305068c6a98
x8 : 0000000100006583 x7 : 0000000000000000 x6 : ffff00008083cc40
x5 : ffff00008083cc40 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000b269e5a8
Call trace:
 phylink_major_config+0x408/0x948 (P)
 phylink_resolve+0x294/0x6e4
 process_one_work+0x148/0x28c
 worker_thread+0x2d8/0x3d8
 kthread+0x134/0x208
 ret_from_fork+0x10/0x20
Code: d63f0020 f9400e60 b4000040 f900081f (f9000ad3)
---[ end trace 0000000000000000 ]---

This is caused by "pcs" being NULL when we attempt to execute:

		pcs->phylink = pl;

Make this conditional on pcs being non-null.

Fixes: 486dc391ef ("net: phylink: allow mac_select_pcs() to remove a PCS")
Reported-by: Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1vl39Q-00000006utm-229h@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-29 18:30:01 -08:00
Jakub Kicinski a010fe8d86 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.19-rc8).

No adjacent changes, conflicts:

drivers/net/ethernet/spacemit/k1_emac.c
  2c84959167 ("net: spacemit: Check for netif_carrier_ok() in emac_stats_update()")
  f66086798f ("net: spacemit: Remove broken flow control support")
https://lore.kernel.org/aXjAqZA3iEWD_DGM@sirena.org.uk

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-29 17:28:54 -08:00
Wei Fang 2aa1545ba8 net: phy: micrel: fix clk warning when removing the driver
Since the commit 25c6a5ab15 ("net: phy: micrel: Dynamically control
external clock of KSZ PHY"), the clock of Micrel PHY has been enabled
by phy_driver::resume() and disabled by phy_driver::suspend(). However,
devm_clk_get_optional_enabled() is used in kszphy_probe(), so the clock
will automatically be disabled when the device is unbound from the bus.
Therefore, this could cause the clock to be disabled twice, resulting
in clk driver warnings.

For example, this issue can be reproduced on i.MX6ULL platform, and we
can see the following logs when removing the FEC MAC drivers.

$ echo 2188000.ethernet > /sys/bus/platform/drivers/fec/unbind
$ echo 20b4000.ethernet > /sys/bus/platform/drivers/fec/unbind
[  109.758207] ------------[ cut here ]------------
[  109.758240] WARNING: drivers/clk/clk.c:1188 at clk_core_disable+0xb4/0xd0, CPU#0: sh/639
[  109.771011] enet2_ref already disabled
[  109.793359] Call trace:
[  109.822006]  clk_core_disable from clk_disable+0x28/0x34
[  109.827340]  clk_disable from clk_disable_unprepare+0xc/0x18
[  109.833029]  clk_disable_unprepare from devm_clk_release+0x1c/0x28
[  109.839241]  devm_clk_release from devres_release_all+0x98/0x100
[  109.845278]  devres_release_all from device_unbind_cleanup+0xc/0x70
[  109.851571]  device_unbind_cleanup from device_release_driver_internal+0x1a4/0x1f4
[  109.859170]  device_release_driver_internal from bus_remove_device+0xbc/0xe4
[  109.866243]  bus_remove_device from device_del+0x140/0x458
[  109.871757]  device_del from phy_mdio_device_remove+0xc/0x24
[  109.877452]  phy_mdio_device_remove from mdiobus_unregister+0x40/0xac
[  109.883918]  mdiobus_unregister from fec_enet_mii_remove+0x40/0x78
[  109.890125]  fec_enet_mii_remove from fec_drv_remove+0x4c/0x158
[  109.896076]  fec_drv_remove from device_release_driver_internal+0x17c/0x1f4
[  109.962748] WARNING: drivers/clk/clk.c:1047 at clk_core_unprepare+0xfc/0x13c, CPU#0: sh/639
[  109.975805] enet2_ref already unprepared
[  110.002866] Call trace:
[  110.031758]  clk_core_unprepare from clk_unprepare+0x24/0x2c
[  110.037440]  clk_unprepare from devm_clk_release+0x1c/0x28
[  110.042957]  devm_clk_release from devres_release_all+0x98/0x100
[  110.048989]  devres_release_all from device_unbind_cleanup+0xc/0x70
[  110.055280]  device_unbind_cleanup from device_release_driver_internal+0x1a4/0x1f4
[  110.062877]  device_release_driver_internal from bus_remove_device+0xbc/0xe4
[  110.069950]  bus_remove_device from device_del+0x140/0x458
[  110.075469]  device_del from phy_mdio_device_remove+0xc/0x24
[  110.081165]  phy_mdio_device_remove from mdiobus_unregister+0x40/0xac
[  110.087632]  mdiobus_unregister from fec_enet_mii_remove+0x40/0x78
[  110.093836]  fec_enet_mii_remove from fec_drv_remove+0x4c/0x158
[  110.099782]  fec_drv_remove from device_release_driver_internal+0x17c/0x1f4

After analyzing the process of removing the FEC driver, as shown below,
it can be seen that the clock was disabled twice by the PHY driver.

fec_drv_remove()
  --> fec_enet_close()
    --> phy_stop()
      --> phy_suspend()
        --> kszphy_suspend() #1 The clock is disabled
  --> fec_enet_mii_remove()
    --> mdiobus_unregister()
      --> phy_mdio_device_remove()
        --> device_del()
          --> devm_clk_release() #2 The clock is disabled again

Therefore, devm_clk_get_optional() is used to fix the above issue. And
to avoid the issue mentioned by the commit 9853294627 ("net: phy:
micrel: use devm_clk_get_optional_enabled for the rmii-ref clock"), the
clock is enabled by clk_prepare_enable() to get the correct clock rate.

Fixes: 25c6a5ab15 ("net: phy: micrel: Dynamically control external clock of KSZ PHY")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260126081544.983517-1-wei.fang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-28 20:10:39 -08:00
Jakub Kicinski 9abf22075d Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.19-rc7).

Conflicts:

drivers/net/ethernet/huawei/hinic3/hinic3_irq.c
  b35a6fd37a ("hinic3: Add adaptive IRQ coalescing with DIM")
  fb2bb2a1eb ("hinic3: Fix netif_queue_set_napi queue_index input parameter error")
https://lore.kernel.org/fc0a7fdf08789a52653e8ad05281a0a849e79206.1768915707.git.zhuyikai1@h-partners.com

drivers/net/wireless/ath/ath12k/mac.c
drivers/net/wireless/ath/ath12k/wifi7/hw.c
  3170757210 ("wifi: ath12k: Fix wrong P2P device link id issue")
  c26f294fef ("wifi: ath12k: Move ieee80211_ops callback to the arch specific module")
https://lore.kernel.org/20260114123751.6a208818@canb.auug.org.au

Adjacent changes:

drivers/net/wireless/ath/ath12k/mac.c
  8b8d6ee53d ("wifi: ath12k: Fix scan state stuck in ABORTING after cancel_remain_on_channel")
  914c890d3b ("wifi: ath12k: Add framework for hardware specific ieee80211_ops registration")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-22 20:14:36 -08:00
Simon Horman 0b87bbf65d net: phy: Grammar update for comment in genphy_update_link
Enhance the grammar of the comment in genphy_update_link()
describing momentary link drop handling.

Found by inspection.

Signed-off-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260121-phy-gra-v1-1-8b4d178939de@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-22 18:33:42 -08:00
Stefan Eichenberger fa1197a094 net: phy: micrel: add option to keep the preamble before sfd for KSZ9131
If the PHY_F_KEEP_PREAMBLE_BEFORE_SFD flag is set in the
phy_device::dev_flags field, the preamble will be kept before the start
frame delimiter (SFD) on the KSZ9131 PHY. This flag is not officially
documented by Micrel. However, information provided by NXP and Micrel
indicates that this flag ensures the PHY sends the full preamble instead
of removing it. The full discussion can be found on the NXP forum:
https://community.nxp.com/t5/i-MX-Processors/iMX8MP-eqos-not-working-for-10base-t/m-p/2151032

Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260120203905.23805-3-eichest@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-22 18:27:32 -08:00
Vladimir Oltean 96969b132b net: phylink: introduce helpers for replaying link callbacks
Some drivers of MAC + tightly integrated PCS (example: SJA1105 + XPCS
covered by same reset domain) need to perform resets at runtime.

The reset is triggered by the MAC driver, and it needs to restore its
and the PCS' registers, all invisible to phylink.

However, there is a desire to simplify the API through which the MAC and
the PCS interact, so this becomes challenging.

Phylink holds all the necessary state to help with this operation, and
can offer two helpers which walk the MAC and PCS drivers again through
the callbacks required during a destructive reset operation. The
procedure is as follows:

Before reset, MAC driver calls phylink_replay_link_begin():
- Triggers phylink mac_link_down() and pcs_link_down() methods

After reset, MAC driver calls phylink_replay_link_end():
- Triggers phylink mac_config() -> pcs_config() -> mac_link_up() ->
  pcs_link_up() methods.

MAC and PCS registers are restored with no other custom driver code.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20260119121954.1624535-3-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-21 19:50:54 -08:00
Vladimir Oltean 7bf588dc62 net: phylink: simplify phylink_resolve() -> phylink_major_config() path
This is a trivial change with no functional effect which replaces the
pattern:

if (a) {
	if (b) {
		do_stuff();
	}
}

with:

if (a && b) {
	do_stuff();
};

The purpose is to reduce the delta of a subsequent functional change.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20260119121954.1624535-2-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-21 19:50:54 -08:00
Vladimir Oltean 66d8a334b5 net: phy: air_en8811h: deprecate "airoha,pnswap-rx" and "airoha,pnswap-tx"
Prefer the new "rx-polarity" and "tx-polarity" properties, and use the
vendor specific ones as fallback if the standard description doesn't
exist.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260119091220.1493761-3-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-21 19:46:58 -08:00
Heiner Kallweit 0d035fb5dc net: phy: simplify PHY fixup registration
Based on the fact that either bus_id-based matching or phy_uid-based
matching is used, the code can be simplified. PHY_ANY_ID and
PHY_ANY_UID are not needed. Ensure that phy_id_compare() is called
only if phy_uid_mask isn't zero, because a zero value would always
result in a match.
In addition change the return value type of phy_needs_fixup() to bool.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/e7394cc8-5895-4d02-a8fe-802345c7c547@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-20 18:56:46 -08:00
Daniel Golle 79912b256e net: phy: intel-xway: fix OF node refcount leakage
Automated review spotted am OF node reference count leakage when
checking if the 'leds' child node exists.

Call of_put_node() to correctly maintain the refcount.

Link: https://netdev-ai.bots.linux.dev/ai-review.html?id=20f173ba-0c64-422b-a663-fea4b4ad01d0
Fixes: 1758af47b9 ("net: phy: intel-xway: add support for PHY LEDs")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/e3275e1c1cdca7e6426bb9c11f33bd84b8d900c8.1768783208.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-20 15:57:21 -08:00
Mika Westerberg a9927022c4 net: ethtool: Add support for 80Gbps speed
USB4 v2 link used in peer-to-peer networking is symmetric 80Gbps so in
order to support reading this link speed, add support for it to ethtool.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20260115115646.328898-3-mika.westerberg@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-19 12:09:58 -08:00
Hamza Mahfooz a92a6c50e3 net: sfp: add potron quirk to the H-COM SPP425H-GAB4 SFP+ Stick
This is another one of those XGSPON ONU sticks that's using the
X-ONU-SFPP internally, thus it also requires the potron quirk to avoid tx
faults. So, add an entry for it in sfp_quirks[].

Cc: stable@vger.kernel.org
Signed-off-by: Hamza Mahfooz <someguy@effective-light.com>
Link: https://patch.msgid.link/20260113232957.609642-1-someguy@effective-light.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-17 16:45:40 -08:00
Daniel Golle 650e55f224 net: phy: realtek: simplify bogus paged operations
Only registers 0x10~0x17 are affected by the value in the page
selection register 0x1f. Hence there is no point in using paged
operations when accessing any other registers.
Simplify the driver by using the normal phy_read and phy_write
operations for registers which are anyway not affected by paging.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/0c5cbb66ce3e72a011d76f8c3d61ebcac44483bb.1768275364.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-17 16:12:16 -08:00
Daniel Golle 46ff862d37 net: phy: realtek: demystify PHYSR register location
Turns out that register address RTL_VND2_PHYSR (0xa434) maps to
Clause-22 register MII_RESV2. Use that to get rid of yet another magic
number, and rename access macros accordingly.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/6ed246e0aa3ca8038d2fa432d51518959fb89b6b.1768275364.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-17 16:12:16 -08:00
Daniel Golle 85f75da86a net: phy: realtek: reunify C22 and C45 drivers
Reunify the split C22/C45 drivers for the RTL8221B-VB-CG 2.5Gbps and
RTL8221B-VM-CG 2.5Gbps PHYs back into a single driver.

This is possible now by using all the driver operations previously used
by the C45 driver, as transparent access to all MMDs including
MDIO_MMD_VEND2 is now possible also over Clause-22 MDIO.

The unified driver will still only use Clause-45 access on any Clause-45
capable busses while still working fine on Clause-22 busses.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/bffcb85fdc20e07056976962d3caaa1be5d0ddb0.1768275364.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-17 16:12:16 -08:00
Daniel Golle 2809a1c434 net: phy: realtek: simplify C22 reg access via MDIO_MMD_VEND2
RealTek 2.5GE PHYs have all standard Clause-22 registers mapped also
inside MDIO_MMD_VEND2 at offset 0xa400. This is used mainly in case the
PHY is connected to a Clause-45-only bus. The RTL8221B is frequently
used in copper SFP module which uses the RollBall MDIO-over-I2C
method which *only* supports Clause-45, for example.

In order to support using the PHY on Clause-45-only busses, the PHY
driver has previously been split into a C22-only and C45-only instances,
creating quite a bit of redundancy and confusion.

In preparation of reunifying the two driver instances, add support for
translating MDIO_MMD_VEND2 registers 0xa400 to 0xa43c back to Clause-22
registers 0 to 30 in case the PHY is accessed on a Clause-22 bus.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/fd49d86bd0445b76269fd3ea456c709c2066683f.1768275364.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-17 16:12:16 -08:00
Daniel Golle 84fb8b93fa net: phy: realtek: support interrupt also for C22 variants
Now that access to MDIO_MMD_VEND2 works transparently also in Clause-22
mode, add interrupt support also for the C22 variants of the
RTL8221B-VB-CG and RTL8221B-VM-CG. This results in the C22 and C45
driver instances now having all the same features implemented.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/7620084b1de01580edc2d0e1b9548507fb4643a8.1768275364.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-17 16:12:16 -08:00
Jan Hoffmann 8744b63e8a net: phy: realtek: fix in-band capabilities for 2.5G PHYs
It looks like the configuration of in-band AN only affects SGMII, and it
is always disabled for 2500Base-X. Adjust the reported capabilities
accordingly.

This is based on testing using OpenWrt on Zyxel XGS1010-12 rev A1 with
RTL8226-CG, and Zyxel XGS1210-12 rev B1 with RTL8221B-VB-CG. On these
devices, 2500Base-X in-band AN is known to work with some SFP modules
(containing an unknown PHY). However, with the built-in Realtek PHYs,
no auto-negotiation takes place, irrespective of the configuration of
the PHY.

Fixes: 10fbd71fc5 ("net: phy: realtek: implement configuring in-band an")
Signed-off-by: Jan Hoffmann <jan@3e8.eu>
Reviewed-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/20260113205557.503409-1-jan@3e8.eu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-15 19:52:46 -08:00
Heiner Kallweit b1b77c82ce net: phy: remove unused fixup unregistering functions
No user of PHY fixups unregisters these. IOW: The fixup unregistering
functions are unused and can be removed. Remove also documentation
for these functions. Whilst at it, remove also mentioning of
phy_register_fixup() from the Documentation, as this function has been
static since ea47e70e47 ("net: phy: remove fixup-related definitions
from phy.h which are not used outside phylib").

Fixup unregistering functions were added with f38e7a32ee
("phy: add phy fixup unregister functions") in 2016, and last user
was removed with 6782d06a47 ("net: usb: lan78xx: Remove KSZ9031 PHY
fixup") in 2024.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/ff8ac321-435c-48d0-b376-fbca80c0c22e@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-15 19:48:26 -08:00
Osose Itua a673383652 net: phy: adin: enable configuration of the LP Termination Register
The ADIN1200/ADIN1300 provide a control bit that selects between normal
receive termination and the lowest common mode impedance for 100BASE-TX
operation. This behavior is controlled through the Low Power Termination
register (B_100_ZPTM_EN_DIMRX).

Bit 0 of this register enables normal termination when set (this is the
default), and selects the lowest common mode impedance when cleared.

Signed-off-by: Osose Itua <osose.itua@savoirfairelinux.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20260107221913.1334157-3-osose.itua@savoirfairelinux.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-15 19:36:04 -08:00
Jakub Kicinski c27022497d Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.19-rc6).

No conflicts, or adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-15 18:02:48 -08:00
Eric Biggers 12b03936a0 net: phy: mscc: macsec: Use new AES library API
Switch from the old AES library functions (which use struct
crypto_aes_ctx) to the new ones (which use struct aes_enckey).  This
eliminates the unnecessary computation and caching of the decryption
round keys.  The new AES en/decryption functions are also much faster
and use AES instructions when supported by the CPU.

Note that in addition to the change in the key preparation function and
the key struct type itself, the change in the type of the key struct
results in aes_encrypt() (which is temporarily a type-generic macro)
calling the new encryption function rather than the old one.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20260112192035.10427-22-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2026-01-15 14:09:07 -08:00
Heiner Kallweit ca8934f80c net: phy: fixed_phy: replace IDA with a bitmap
Size of array fmb_fixed_phys is small, so we can use a simple bitmap
instead of an IDA to manage dynamic allocation of fixed PHY's.
find_first_zero_bit() isn't atomic, so we need the loop to rule out
double allocation of a PHY address.

Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/d4614463-d532-41fc-92e9-ef97107aceb5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-13 18:58:49 -08:00
Heiner Kallweit 511cb45260 net: phy: fixed_phy: replace list of fixed PHYs with static array
Due to max 32 PHY addresses being available per mii bus, using a list
can't support more fixed PHY's. And there's no known use case for as
much as 32 fixed PHY's on a system. 8 should be plenty of fixed PHY's,
so use an array of that size instead of a list. This allows to
significantly reduce the code size and complexity.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/8610d30c-eac7-4100-9008-d3b6cee6a5cd@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-13 18:58:49 -08:00
Maxime Chevallier bad869b5e4 net: phy: Only rely on phy_port for PHY-driven SFP
Now that all PHY drivers that support downstream SFP have been converted
to phy_port serdes handling, we can make the generic PHY SFP handling
mandatory, thus making all phylib sfp helpers static.

Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260108080041.553250-14-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-13 18:52:35 -08:00
Maxime Chevallier 154bc3b66c net: phy: qca807x: Support SFP through phy_port interface
QCA8072/8075 may be used as combo-port PHYs, with Serdes (100/1000BaseX)
 and Copper interfaces. The PHY has the ability to read the configuration
it's in.  If the configuration indicates the PHY is in combo mode, allow
registering up to 2 ports.

Register a dedicated set of port ops to handle the serdes port, and rely
on generic phylib SFP support for the SFP handling.

Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260108080041.553250-13-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-13 18:52:35 -08:00
Maxime Chevallier 4e26a284b9 net: phy: at803x: Support SFP through phy_port interface
Convert the at803x driver to use the generic phylib SFP handling, via a
dedicated .attach_port() callback, populating the supported interfaces.

As these devices are limited to 1000BaseX, a workaround is used to also
support, in a very limited way, copper modules. This is done by
supporting SGMII but limiting it to 1G full duplex (in which case it's
somewhat compatible with 1000BaseX).

Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260108080041.553250-12-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-13 18:52:35 -08:00