Merge tag 'net-6.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
"This is somewhat larger than what I hoped for, with a few PRs from
su

Merge tag 'net-6.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
"This is somewhat larger than what I hoped for, with a few PRs from
subsystems and follow-ups for the recent netdev locking changes,
anyhow there are no known pending regressions.

Including fixes from bluetooth, ipsec and CAN.

Current release - regressions:

- eth: team: grab team lock during team_change_rx_flags

- eth: bnxt_en: fix netdev locking in ULP IRQ functions

Current release - new code bugs:

- xfrm: ipcomp: fix truesize computation on receive

- eth: airoha: fix page recycling in airoha_qdma_rx_process()

Previous releases - regressions:

- sched: hfsc: fix qlen accounting bug when using peek in
hfsc_enqueue()

- mr: consolidate the ipmr_can_free_table() checks.

- bridge: netfilter: fix forwarding of fragmented packets

- xsk: bring back busy polling support in XDP_COPY

- can:
- add missing rcu read protection for procfs content
- kvaser_pciefd: force IRQ edge in case of nested IRQ

Previous releases - always broken:

- xfrm: espintcp: remove encap socket caching to avoid reference leak

- bluetooth: use skb_pull to avoid unsafe access in QCA dump handling

- eth: idpf:
- fix null-ptr-deref in idpf_features_check
- fix idpf_vport_splitq_napi_poll()

- eth: hibmcge: fix wrong ndo.open() after reset fail issue"

* tag 'net-6.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (40 commits)
octeontx2-af: Fix APR entry mapping based on APR_LMT_CFG
octeontx2-af: Set LMT_ENA bit for APR table entries
net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done
octeontx2-pf: Avoid adding dcbnl_ops for LBK and SDP vf
selftests/tc-testing: Add an HFSC qlen accounting test
sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue()
idpf: fix idpf_vport_splitq_napi_poll()
net: hibmcge: fix wrong ndo.open() after reset fail issue.
net: hibmcge: fix incorrect statistics update issue
xsk: Bring back busy polling support in XDP_COPY
can: slcan: allow reception of short error messages
net: lan743x: Restore SGMII CTRL register on resume
bnxt_en: Fix netdev locking in ULP IRQ functions
MAINTAINERS: Drop myself to reviewer for ravb driver
net: dwmac-sun8i: Use parsed internal PHY address instead of 1
net: ethernet: ti: am65-cpsw: Lower random mac address error print to info
can: kvaser_pciefd: Continue parsing DMA buf after dropped RX
can: kvaser_pciefd: Fix echo_skb race
can: kvaser_pciefd: Force IRQ edge in case of nested IRQ
idpf: fix null-ptr-deref in idpf_features_check
...

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bnxt_en: Fix netdev locking in ULP IRQ functions

netdev_lock is already held when calling bnxt_ulp_irq_stop() and
bnxt_ulp_irq_restart(). When converting rtnl_lock to netdev_lock,
the original code

bnxt_en: Fix netdev locking in ULP IRQ functions

netdev_lock is already held when calling bnxt_ulp_irq_stop() and
bnxt_ulp_irq_restart(). When converting rtnl_lock to netdev_lock,
the original code was rtnl_dereference() to indicate that rtnl_lock
was already held. rcu_dereference_protected() is the correct
conversion after replacing rtnl_lock with netdev_lock.

Add a new helper netdev_lock_dereference() similar to
rtnl_dereference().

Fixes: 004b5008016a ("eth: bnxt: remove most dependencies on RTNL")
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250519204130.3097027-2-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Merge drm/drm-fixes into drm-misc-fixes

Backmerging to get updates from v6.15-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge tag 'net-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter.

Current release - regressions:

Merge tag 'net-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter.

Current release - regressions:

- four fixes for the netdev per-instance locking

Current release - new code bugs:

- consolidate more code between existing Rx zero-copy and uring so
that the latter doesn't miss / have to duplicate the safety checks

Previous releases - regressions:

- ipv6: fix omitted Netlink attributes when using SKIP_STATS

Previous releases - always broken:

- net: fix geneve_opt length integer overflow

- udp: fix multiple wrap arounds of sk->sk_rmem_alloc when it
approaches INT_MAX

- dsa: mvpp2: add a lock to avoid corruption of the shared TCAM

- dsa: airoha: fix issues with traffic QoS configuration / offload,
and flow table offload

Misc:

- touch up the Netlink YAML specs of old families to make them usable
for user space C codegen"

* tag 'net-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (56 commits)
selftests: net: amt: indicate progress in the stress test
netlink: specs: rt_route: pull the ifa- prefix out of the names
netlink: specs: rt_addr: pull the ifa- prefix out of the names
netlink: specs: rt_addr: fix get multi command name
netlink: specs: rt_addr: fix the spec format / schema failures
net: avoid false positive warnings in __net_mp_close_rxq()
net: move mp dev config validation to __net_mp_open_rxq()
net: ibmveth: make veth_pool_store stop hanging
arcnet: Add NULL check in com20020pci_probe()
ipv6: Do not consider link down nexthops in path selection
ipv6: Start path selection from the first nexthop
usbnet:fix NPE during rx_complete
net: octeontx2: Handle XDP_ABORTED and XDP invalid as XDP_DROP
net: fix geneve_opt length integer overflow
io_uring/zcrx: fix selftests w/ updated netdev Python helpers
selftests: net: use netdevsim in netns test
docs: net: document netdev notifier expectations
net: dummy: request ops lock
netdevsim: add dummy device notifiers
net: rename rtnl_net_debug to lock_debug
...

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Merge branch 'net-hold-instance-lock-during-netdev_up-register'

Stanislav Fomichev says:

====================
net: hold instance lock during NETDEV_UP/REGISTER

Solving the issue reported by Cosmin

Merge branch 'net-hold-instance-lock-during-netdev_up-register'

Stanislav Fomichev says:

====================
net: hold instance lock during NETDEV_UP/REGISTER

Solving the issue reported by Cosmin in [0] requires consistent
lock during NETDEV_UP/REGISTER notifiers. This series
addresses that (along with some other fixes in net/ipv4/devinet.c
and net/ipv6/addrconf.c) and appends the patches from Jakub
that were conditional on consistent locking in NETDEV_UNREGISTER.

0: https://lore.kernel.org/700fa36b94cbd57cfea2622029b087643c80cbc9.camel@nvidia.com
====================

Link: https://patch.msgid.link/20250401163452.622454-1-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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netdevsim: add dummy device notifiers

In order to exercise and verify notifiers' locking assumptions,
register dummy notifiers (via register_netdevice_notifier_dev_net).
Share notifier event handler

netdevsim: add dummy device notifiers

In order to exercise and verify notifiers' locking assumptions,
register dummy notifiers (via register_netdevice_notifier_dev_net).
Share notifier event handler that enforces the assumptions with
lock_debug.c (rename and export rtnl_net_debug_event as
netdev_debug_event). Add ops lock asserts to netdev_debug_event.

Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250401163452.622454-6-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Merge tag 'net-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
"Core & protocols:

- Continue Netlink conversions to per-

Merge tag 'net-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
"Core & protocols:

- Continue Netlink conversions to per-namespace RTNL lock
(IPv4 routing, routing rules, routing next hops, ARP ioctls)

- Continue extending the use of netdev instance locks. As a driver
opt-in protect queue operations and (in due course) ethtool
operations with the instance lock and not RTNL lock.

- Support collecting TCP timestamps (data submitted, sent, acked) in
BPF, allowing for transparent (to the application) and lower
overhead tracking of TCP RPC performance.

- Tweak existing networking Rx zero-copy infra to support zero-copy
Rx via io_uring.

- Optimize MPTCP performance in single subflow mode by 29%.

- Enable GRO on packets which went thru XDP CPU redirect (were queued
for processing on a different CPU). Improving TCP stream
performance up to 2x.

- Improve performance of contended connect() by 200% by searching for
an available 4-tuple under RCU rather than a spin lock. Bring an
additional 229% improvement by tweaking hash distribution.

- Avoid unconditionally touching sk_tsflags on RX, improving
performance under UDP flood by as much as 10%.

- Avoid skb_clone() dance in ping_rcv() to improve performance under
ping flood.

- Avoid FIB lookup in netfilter if socket is available, 20% perf win.

- Rework network device creation (in-kernel) API to more clearly
identify network namespaces and their roles. There are up to 4
namespace roles but we used to have just 2 netns pointer arguments,
interpreted differently based on context.

- Use sysfs_break_active_protection() instead of trylock to avoid
deadlocks between unregistering objects and sysfs access.

- Add a new sysctl and sockopt for capping max retransmit timeout in
TCP.

- Support masking port and DSCP in routing rule matches.

- Support dumping IPv4 multicast addresses with RTM_GETMULTICAST.

- Support specifying at what time packet should be sent on AF_XDP
sockets.

- Expose TCP ULP diagnostic info (for TLS and MPTCP) to non-admin
users.

- Add Netlink YAML spec for WiFi (nl80211) and conntrack.

- Introduce EXPORT_IPV6_MOD() and EXPORT_IPV6_MOD_GPL() for symbols
which only need to be exported when IPv6 support is built as a
module.

- Age FDB entries based on Rx not Tx traffic in VxLAN, similar to
normal bridging.

- Allow users to specify source port range for GENEVE tunnels.

- netconsole: allow attaching kernel release, CPU ID and task name to
messages as metadata

Driver API:

- Continue rework / fixing of Energy Efficient Ethernet (EEE) across
the SW layers. Delegate the responsibilities to phylink where
possible. Improve its handling in phylib.

- Support symmetric OR-XOR RSS hashing algorithm.

- Support tracking and preserving IRQ affinity by NAPI itself.

- Support loopback mode speed selection for interface selftests.

Device drivers:

- Remove the IBM LCS driver for s390

- Remove the sb1000 cable modem driver

- Add support for SFP module access over SMBus

- Add MCTP transport driver for MCTP-over-USB

- Enable XDP metadata support in multiple drivers

- Ethernet high-speed NICs:
- Broadcom (bnxt):
- add PCIe TLP Processing Hints (TPH) support for new AMD
platforms
- support dumping RoCE queue state for debug
- opt into instance locking
- Intel (100G, ice, idpf):
- ice: rework MSI-X IRQ management and distribution
- ice: support for E830 devices
- iavf: add support for Rx timestamping
- iavf: opt into instance locking
- nVidia/Mellanox:
- mlx4: use page pool memory allocator for Rx
- mlx5: support for one PTP device per hardware clock
- mlx5: support for 200Gbps per-lane link modes
- mlx5: move IPSec policy check after decryption
- AMD/Solarflare:
- support FW flashing via devlink
- Cisco (enic):
- use page pool memory allocator for Rx
- enable 32, 64 byte CQEs
- get max rx/tx ring size from the device
- Meta (fbnic):
- support flow steering and RSS configuration
- report queue stats
- support TCP segmentation
- support IRQ coalescing
- support ring size configuration
- Marvell/Cavium:
- support AF_XDP
- Wangxun:
- support for PTP clock and timestamping
- Huawei (hibmcge):
- checksum offload
- add more statistics

- Ethernet virtual:
- VirtIO net:
- aggressively suppress Tx completions, improve perf by 96%
with 1 CPU and 55% with 2 CPUs
- expose NAPI to IRQ mapping and persist NAPI settings
- Google (gve):
- support XDP in DQO RDA Queue Format
- opt into instance locking
- Microsoft vNIC:
- support BIG TCP

- Ethernet NICs consumer, and embedded:
- Synopsys (stmmac):
- cleanup Tx and Tx clock setting and other link-focused
cleanups
- enable SGMII and 2500BASEX mode switching for Intel platforms
- support Sophgo SG2044
- Broadcom switches (b53):
- support for BCM53101
- TI:
- iep: add perout configuration support
- icssg: support XDP
- Cadence (macb):
- implement BQL
- Xilinx (axinet):
- support dynamic IRQ moderation and changing coalescing at
runtime
- implement BQL
- report standard stats
- MediaTek:
- support phylink managed EEE
- Intel:
- igc: don't restart the interface on every XDP program change
- RealTek (r8169):
- support reading registers of internal PHYs directly
- increase max jumbo packet size on RTL8125/RTL8126
- Airoha:
- support for RISC-V NPU packet processing unit
- enable scatter-gather and support MTU up to 9kB
- Tehuti (tn40xx):
- support cards with TN4010 MAC and an Aquantia AQR105 PHY

- Ethernet PHYs:
- support for TJA1102S, TJA1121
- dp83tg720: add randomized polling intervals for link detection
- dp83822: support changing the transmit amplitude voltage
- support for LEDs on 88q2xxx

- CAN:
- canxl: support Remote Request Substitution bit access
- flexcan: add S32G2/S32G3 SoC

- WiFi:
- remove cooked monitor support
- strict mode for better AP testing
- basic EPCS support
- OMI RX bandwidth reduction support
- batman-adv: add support for jumbo frames

- WiFi drivers:
- RealTek (rtw88):
- support RTL8814AE and RTL8814AU
- RealTek (rtw89):
- switch using wiphy_lock and wiphy_work
- add BB context to manipulate two PHY as preparation of MLO
- improve BT-coexistence mechanism to play A2DP smoothly
- Intel (iwlwifi):
- add new iwlmld sub-driver for latest HW/FW combinations
- MediaTek (mt76):
- preparation for mt7996 Multi-Link Operation (MLO) support
- Qualcomm/Atheros (ath12k):
- continued work on MLO
- Silabs (wfx):
- Wake-on-WLAN support

- Bluetooth:
- add support for skb TX SND/COMPLETION timestamping
- hci_core: enable buffer flow control for SCO/eSCO
- coredump: log devcd dumps into the monitor

- Bluetooth drivers:
- intel: add support to configure TX power
- nxp: handle bootloader error during cmd5 and cmd7"

* tag 'net-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1681 commits)
unix: fix up for "apparmor: add fine grained af_unix mediation"
mctp: Fix incorrect tx flow invalidation condition in mctp-i2c
net: usb: asix: ax88772: Increase phy_name size
net: phy: Introduce PHY_ID_SIZE — minimum size for PHY ID string
net: libwx: fix Tx L4 checksum
net: libwx: fix Tx descriptor content for some tunnel packets
atm: Fix NULL pointer dereference
net: tn40xx: add pci-id of the aqr105-based Tehuti TN4010 cards
net: tn40xx: prepare tn40xx driver to find phy of the TN9510 card
net: tn40xx: create swnode for mdio and aqr105 phy and add to mdiobus
net: phy: aquantia: add essential functions to aqr105 driver
net: phy: aquantia: search for firmware-name in fwnode
net: phy: aquantia: add probe function to aqr105 for firmware loading
net: phy: Add swnode support to mdiobus_scan
gve: add XDP DROP and PASS support for DQ
gve: update XDP allocation path support RX buffer posting
gve: merge packet buffer size fields
gve: update GQ RX to use buf_size
gve: introduce config-based allocation for XDP
gve: remove xdp_xsk_done and xdp_xsk_wakeup statistics
...

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Merge branch 'net-skip-taking-rtnl_lock-for-queue-get'

Jakub Kicinski says:

====================
net: skip taking rtnl_lock for queue GET (prep)

Skip taking rtnl_lock for queue GET ops on devices

Merge branch 'net-skip-taking-rtnl_lock-for-queue-get'

Jakub Kicinski says:

====================
net: skip taking rtnl_lock for queue GET (prep)

Skip taking rtnl_lock for queue GET ops on devices which opt
into running all ops under the instance lock. In preparating
for performing queue ops without rtnl lock clarify the protection
of queue-related fields.

v1: https://lore.kernel.org/20250312223507.805719-1-kuba@kernel.org
====================

Link: https://patch.msgid.link/20250324224537.248800-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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net: designate queue -> napi linking as "ops protected"

netdev netlink is the only reader of netdev_{,rx_}queue->napi,
and it already holds netdev->lock. Switch protection of
the writes to netdev->l

net: designate queue -> napi linking as "ops protected"

netdev netlink is the only reader of netdev_{,rx_}queue->napi,
and it already holds netdev->lock. Switch protection of
the writes to netdev->lock to "ops protected".

The expectation will be now that accessing queue->napi
will require netdev->lock for "ops locked" drivers, and
rtnl_lock for all other drivers.

Current "ops locked" drivers don't require any changes.
gve and netdevsim use _locked() helpers right next to
netif_queue_set_napi() so they must be holding the instance
lock. iavf doesn't call it. bnxt is a bit messy but all paths
seem locked.

Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250324224537.248800-7-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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net: explain "protection types" for the instance lock

Try to define some terminology for which fields are protected
by which lock and how. Some fields are protected by both rtnl_lock
and instance lo

net: explain "protection types" for the instance lock

Try to define some terminology for which fields are protected
by which lock and how. Some fields are protected by both rtnl_lock
and instance lock which is hard to talk about without having
a "key phrase" to refer to a particular protection scheme.

"ops protected" fields are defined later in the series, one by one.

Add ASSERT_RTNL() to netdev_ops_assert_locked() for drivers
not other instance protection of ops. Hopefully it's not too
confusion that netdev_lock_ops() does not match the lock which
netdev_ops_assert_locked() will assert, exactly. The noun "ops"
is in a different place in the name, so I think it's acceptable...

Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250324224537.248800-5-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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net: constify dev pointer in misc instance lock helpers

lockdep asserts and predicates can operate on const pointers.
In the future this will let us add asserts in functions
which operate on const p

net: constify dev pointer in misc instance lock helpers

lockdep asserts and predicates can operate on const pointers.
In the future this will let us add asserts in functions
which operate on const pointers like dev_get_min_mp_channel_count().

Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250324224537.248800-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Merge net-next/main to resolve conflicts

There are a few conflicts between the work that went
into wireless and that's here now, resolve them.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net: move misc netdev_lock flavors to a separate header

Move the more esoteric helpers for netdev instance lock to
a dedicated header. This avoids growing netdevice.h to infinity
and makes rebuildin

net: move misc netdev_lock flavors to a separate header

Move the more esoteric helpers for netdev instance lock to
a dedicated header. This avoids growing netdevice.h to infinity
and makes rebuilding the kernel much faster (after touching
the header with the helpers).

The main netdev_lock() / netdev_unlock() functions are used
in static inlines in netdevice.h and will probably be used
most commonly, so keep them in netdevice.h.

Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250307183006.2312761-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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