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authorLinus Torvalds <torvalds@linux-foundation.org>2026-10-22 15:58:00 -1000
committerLinus Torvalds <torvalds@linux-foundation.org>2026-10-22 15:58:00 -1000
commit734bef548a96e8774d6eef5dfa2026c6edc4e80b (patch)
treece2520b2602ce3b82f9842490d21836f9838d441 /Documentation/ABI/testing
parent864c07de0c7dcbca58b61625dfa2e461ae63b242 (diff)
parent1a2c35c49cc7c6be860038b8442b52424a8f123c (diff)
downloadlinux-next-stable.tar.gz
linux-next-stable.zip
Merge tag 'net-next-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextstable
Pull networking updates from Paolo Abeni: "This includes a significant number of low-priority fixes - especially in the NIC drivers area - that we deferred from the last few RCs in the previous cycle, which can't be easily outlined in the synopsis below. Core & protocols: - Continue the work on removing rtnl_lock dependencies: - per-netns ARP and ND neighbour tables, with the default settings now configurable per netns (inheritance from init_net is controlled by the new net.core.neigh_inherit_init_net sysctl) - RCU-protected configuration and rtnl_lock-less fill_info() for hsr, netkit, sit, vlan and vxlan devices - per-netns device unregistration for ip tunnel and gre devices - use the netdev instance lock instead of rtnl_lock when reading speed and duplex via sysfs - batch the flushing of uncached routes at device unregistration time, relieving rtnl_lock contention on netns dismantle. - Add hardware pacing offload support, admin-controlled via a new rtnetlink attribute, with sch_fq integration (implemented in idpf). - Re-segment BIG TCP GSO packets into GSO packets fitting the egress device limits instead of plain MSS-sized segments, improving throughput for mixed BIG TCP / non-BIG TCP paths by up to 70%. - Generate RSS keys that spread flows over all the RX queues; the previous random keys could leave some queues unused. - Optimize the bridge VLAN forwarding paths: cache the port-VLAN in fdb entries and consider only VLAN members when flooding, for ~10% more Mpps in the fdb forwarding path. - A few TCP/IP performance improvements aimed at efficient cache usage and reducing contention. - Add the TCP ROCCET congestion control, a CUBIC variant aimed at avoiding bufferbloat in cellular networks. - Continue the conversion of getsockopt callbacks to sockopt_t. - Add an ethtool command to list the front-facing ports of an interface, including SFP cages and modules, using the phy_port representation. - Enable BIG TCP support for bareudp tunnels. - Remove the IPV6_ADDRFORM socket option and disallow buggy TCP state transitions (listen() + shutdown() + connect() and connect() + connect(AF_UNSPEC) + listen()). - Remove most BUG_ON()s from core packet processing, replacing them with error paths. Wireless: - Latency improvements, including lockless station get/dump and beacon updates, plus RTNL reduction and locking cleanups. - Infrastructure for non-station TX/RX with MLO. - NAN (Wi-Fi Aware) Instant Communication support and other NAN improvements. - Control frame Integrity Protocol (CIP) and protected TWT support. - Improvements for AP regulatory checks. Netfilter: - Disable br_netfilter in user namespaces and schedule it for removal in 2027. - Restrict the raw table in nft_compat to the specific family, hook and priority. - Prepare the flowtable for mixed IPv4-over-IPv6 tunneling (and vice versa). - Use GFP_KERNEL_ACCOUNT for most netfilter allocations, for better integration with memcg. - Allow discovering conntrack zone filtering support in ctnetlink dumps, and fix nfnetlink_hook handling of large dumps. Deletions: - Move the LLC type 2 sockets out of tree. There are no known users and the code attracts a never-ending stream of LLM-driven fixes. Device drivers: - New drivers: - Meta Platforms NIC (mpnic), the second-generation NIC from Meta - initial skeleton of the Nebula-matrix NICs driver (nbl) - X-Powers AC200/AC300 Fast Ethernet PHYs - Ethernet high-speed NICs: - Intel: - i40e: XDP metadata support for RX hash and VLAN tag - ice: expose the E825 TSPLL state via the DPLL subsystem - nVidia/Mellanox: - move the data direct infrastructure from IB to core, in preparation for netdev support. - reduce the memory used per offloaded TC rule - Meta (fbnic): - support large io_uring zero-copy RX buffers - Microsoft vNIC (mana): - add BQL support - Ethernet NICs consumer, and embedded: - Airoha: - LRO offload support - Cadence (macb): - context swapping for ringparam and MTU changes, avoiding buffer loss under memory pressure - Mucse (rnpgbe): - TX/RX and link status support - NXP (enetc): - SR-IOV improvements and VF support for ENETC v4 - Qualcomm (ppe): - IPQ5424 support - Realtek PCI (r8169): - phylink support - RSS support for RTL8127 - Renesas (ravb): - gPTP support for R-Car Gen4 - Synopsys (stmmac): - XDP multi-buffer support on the TX side - tc mqprio hw queue priority offload - support for RK3568 SGMII, Allwinner H616 EMAC1, UltraRISC DP1000 and Qualcomm sa8255p - Ethernet switches: - Mediatek (mt7530): - fast age and change conduit support - Microchip (ksz): - support for KSZ8995XA/KS8995XA - Microchip (lan966x): - PCIe FDMA support, ~20x throughput increase in PCIe endpoint - Microchip (sparx5): - Time Aware Shaper (taprio) offload - Motorcomm (yt921x): - LED and SerDes PCS support - Realtek (rtl8365mb): - EEE support - Ethernet PHYs: - Broadcom: - enable jumbo frames on BCM54xx - Realtek: - support for RTL8261CE_CG and RTL8261D_VM - MDIO support for RTL838x and RTL839x - WiFi drivers: - Broadcom (brcmfmac): - FT/OKC roaming offload - Intel (iwlwifi): - UHR sniffer support - support for newer UEFI/BIOS tables - MediaTek (mt76): - mt7925 NAN improvements - offchannel/scan improvements and MLO fixes - Morse Micro (mm81x): - monitor mode support - Qualcomm (ath12k): - IPQ5332 platform infrastructure - Realtek (rtw88): - RTL8723BS support - SDIO TX performance improvements - Realtek (rtw89): - P2P_DEVICE support - BT-coex updates for RTL8922D - Bluetooth: - move H:4 reassembly into the Bluetooth core - add generic support for vendor packets - MGMT: add security level changed event - Bluetooth drivers: - btusb: support Bulk Serialization Mode - Intel: support Draco and Titan Lake, allow unsigned firmware - Mediatek: MT7928 support - Qualcomm: QCC2072 support - Broadcom: Synaptics 4384 support" * tag 'net-next-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2126 commits) Bluetooth: btusb: disable by default Qualcomm multi-subsystem tipc: fix broadcast sender hang on last acker departure tipc: fix use-after-free of broadcast reception link at node release r8169: clear TX LPI on RTL8168h at link up after phylink conversion tun: Require CAP_NET_ADMIN to attach to an ownerless device net/sched/sch_cake: drop dead nla_nest_end() error check net/sched/sch_cake: widen buffer_used to u64 net/sched/sch_cake: reduce parent backlog when clearing a tin net/sched/sch_cake: serialize reconfiguration with the datapath tg3: Add Datto SIRIS 5 1U Server to restart AER quirk table net/mlx5e: Stop asserting for RTNL when closing channels net: shrink the payload-only part of skb dataref to one bit net: wwan: iosm: validate msg_head before indexing msg_ring net: bgmac: rate limit RX error messages selftests: net: veth: test XDP_TX to a peer with GRO enabled veth: schedule the peer's NAPI after XDP_TX when only GRO is enabled pppoe: delete session hash entries by pointer match net: lan969x: don't disable hardirqs in fdma tx clear net: sparx5/lan969x: do not clobber the PSFP cycle timer update period net: lan969x: fix DSM calendar for empty taxis ...
Diffstat (limited to 'Documentation/ABI/testing')
-rw-r--r--Documentation/ABI/testing/sysfs-devices-platform-soc-ipa14
-rw-r--r--Documentation/ABI/testing/sysfs-timecard37
2 files changed, 34 insertions, 17 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa b/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa
index 364b1ba41242..3b3bae2369d4 100644
--- a/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa
+++ b/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa
@@ -75,20 +75,6 @@ Description:
the ID of the AP endpoint on which packets destined
for the embedded modem are sent.
-What: .../XXXXXXX.ipa/endpoint_id/monitor_rx
-Date: July 2022
-KernelVersion: v5.19
-Contact: Alex Elder <elder@kernel.org>
-Description:
- The .../XXXXXXX.ipa/endpoint_id/monitor_rx file contains
- the ID of the AP endpoint on which IPA "monitor" data is
- received. The monitor endpoint supplies replicas of
- packets that enter the IPA hardware for processing.
- Each replicated packet is preceded by a fixed-size "ODL"
- header (see .../XXXXXXX.ipa/feature/monitor, above).
- Large packets are truncated, to reduce the bandwidth
- required to provide the monitor function.
-
What: .../XXXXXXX.ipa/modem/
Date: June 2021
KernelVersion: v5.14
diff --git a/Documentation/ABI/testing/sysfs-timecard b/Documentation/ABI/testing/sysfs-timecard
index 3ae41b7634ac..a0b7172851d4 100644
--- a/Documentation/ABI/testing/sysfs-timecard
+++ b/Documentation/ABI/testing/sysfs-timecard
@@ -11,6 +11,35 @@ Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
Description: This directory contains the attributes of the Nth timecard
registered.
+What: /sys/class/timecard/ocpN/cpld_status
+Date: July 2026
+Contact: Sagi Maimon <maimon.sagi@gmail.com>
+Description: (RO, root only) The flags set in the status register of the
+ TAP CPLD, space separated, or an empty line when none is
+ set. Only present on ADVA x1 TAP boards (PCI ID
+ 0xad5a:0x0410).
+
+ ========== ================================================
+ done the configuration flash holds a valid image and
+ it is active
+ busy an internal operation is in progress
+ failed the last ISC operation failed
+ ========== ================================================
+
+ For example "busy" while an operation runs, or "busy failed"
+ if a failure is latched while another one is in progress.
+
+ A read arbitrates for the shared I2C bus and reprograms the
+ on-card mux, so it is restricted to root. The Lattice device
+ ID of the CPLD is read by the driver shortly after probe,
+ and again after a successful CPLD update, and reported from
+ that cached value as the fixed "cpld.id" version by
+ devlink dev info.
+
+ New CPLD firmware is programmed with devlink dev flash,
+ selecting the "fw.cpld" component; see
+ Documentation/networking/devlink/ptp_ocp.rst.
+
What: /sys/class/timecard/ocpN/available_clock_sources
Date: September 2021
Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
@@ -156,9 +185,11 @@ Description: (RW) Used to start the signal generator, and summarize
period [duty [phase [polarity]]]
- echo 500000000 > signal # 1/2 second period
- echo 1000000 40 100 > signal
- echo 0 > signal # turn off generator
+ ::
+
+ echo 500000000 > signal # 1/2 second period
+ echo 1000000 40 100 > signal
+ echo 0 > signal # turn off generator
Period and phase are specified in nanoseconds. Duty cycle is
a percentage from 1-99. Polarity is 1 or 0.