Changes in netdev_config.c

c17ee635fd3a482b2ad2bf5e269755c2eae5f25e - Merge drm/drm-fixes into drm-misc-fixes

Mon, 23 Feb 2026 09:09:45 +0000

Merge drm/drm-fixes into drm-misc-fixes7.0-rc1 was just released, let's merge it to kick the new release cycle.Signed-off-by: Maxime Ripard List of files: /linux/net/core/netdev_config.c

37a93dd5c49b5fda807fd204edf2547c3493319c - Merge tag 'net-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Thu, 12 Feb 2026 03:31:52 +0000

Merge tag 'net-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextPull 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() ... List of files: /linux/net/core/netdev_config.c

6a9e8b60f003e66f989097a5928d4ba83360b4ef - Merge branch 'net-restore-the-structure-of-driver-facing-qcfg-api'

Fri, 23 Jan 2026 19:49:58 +0000

Merge branch 'net-restore-the-structure-of-driver-facing-qcfg-api'Jakub Kicinski says:====================net: restore the structure of driver-facing qcfg APIThe goal of qcfg objects is to let us seamlessly support new use caseswithout modifying all the drivers. We want to pull all the logic ofcombining configuration supplied via different interfaces into the coreand present the drivers with a flat queue-by-queue configuration.Additionally we want to separate the current effective configurationfrom the user intent (default vs user setting vs memory provider setting).Restructure the recently added code to re-introduce the pieces thatare missing compared to the old RFC:https://lore.kernel.org/20250421222827.283737-1-kuba@kernel.orgNamely: - the netdev_queue_config() helper - queue config validation callbackI hopefully removed all the more "out there" parts of the RFC.====================Link: https://patch.msgid.link/20260122005113.2476634-1-kuba@kernel.orgSigned-off-by: Jakub Kicinski List of files: /linux/net/core/netdev_config.c

8e3245cb30864f93d7706e03e61ca1972ea4f64c - net: add queue config validation callback

Thu, 22 Jan 2026 00:51:12 +0000

net: add queue config validation callbackI imagine (tm) that as the number of per-queue configurationoptions grows some of them may conflict for certain drivers.While the drivers can obviously do all the validation locallydoing so is fairly inconvenient as the config is fed to driverspiecemeal via different ops (for different params and NIC-widevs per-queue).Add a centralized callback for validating the queue configin queue ops. The callback gets invoked before memory provideris installed, and in the future should also be called when ringparams are modified.The validation is done after each layer of configuration.Since we can't fail MP un-binding we must make sure thatthe config is valid both before and after MP overrides areapplied. This is moot for now since the set of MP and deviceconfigs are disjoint. It will matter significantly in the future,so adding it now so that we don't forget..Link: https://patch.msgid.link/20260122005113.2476634-6-kuba@kernel.orgSigned-off-by: Jakub Kicinski List of files: /linux/net/core/netdev_config.c

fc1a78a25c5e3c92132f2975c7b547e67305fcf4 - net: use netdev_queue_config() for mp restart

Thu, 22 Jan 2026 00:51:11 +0000

net: use netdev_queue_config() for mp restartWe should follow the prepare/commit approach for queue configuration.The qcfg struct should be added to dev->cfg rather than directly toqueue objects so that we can clone and discard the pending configeasily.Remove the qcfg in struct netdev_rx_queue, and switch remaining callersto netdev_queue_config(). netdev_queue_config() will construct the qcfgon the fly based on device defaults and state of the queue.ndo_default_qcfg becomes optional because having the callback itselfdoes not have any meaningful semantics to us.Reviewed-by: Dragos Tatulea Link: https://patch.msgid.link/20260122005113.2476634-5-kuba@kernel.orgSigned-off-by: Jakub Kicinski List of files: /linux/net/core/netdev_config.c

b9ac2c60a3ad445fa81289aac5adc06b8c1b1d57 - net: introduce a trivial netdev_queue_config()

Thu, 22 Jan 2026 00:51:09 +0000

net: introduce a trivial netdev_queue_config()We may choose to extend or reimplement the logic which rendersthe per-queue config. The drivers should not poke directly intothe queue state. Add a helper for drivers to use when they wantto query the config for a specific queue.Link: https://patch.msgid.link/20260122005113.2476634-3-kuba@kernel.orgSigned-off-by: Jakub Kicinski List of files: /linux/net/core/netdev_config.c