Changes in Makefile

67f8bc848ee31831336bd478e57d2f993551902e - Merge drm/drm-fixes into drm-misc-fixes

Tue, 01 Sep 2026 09:38:51 +0200

Merge drm/drm-fixes into drm-misc-fixesLet's start the 7.3 drm-misc-fixes cycle.Signed-off-by: Maxime Ripard List of files: /linux/tools/testing/selftests/net/hsr/Makefile

91ec2035134982b98fab0609a9fd8480e8217dc1 - Merge tag 'net-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Thu, 20 Aug 2026 17:16:04 +0200

Merge tag 'net-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextPull networking updates from Jakub Kicinski: "One of the 'small improvements all over the place' releases for us. It's hard to draw any direct comparisons because summer vacations disrupted our patch processing (and presumably - generation) quite a bit. Quick and dirty count suggests we (Paolo and I) merged a very similar number of net (632) and net-next (648) patches. This is not telling the full story either because 1/3 to 1/2 of the net-next patches also *seem* like AI-driven low priority fixes, cleanups and clarifications. We are completely overwhelmed, of course. The glimmer of hope is that we secured sufficient LLM budget and access (thank you Meta!) to run reviews with multiple frontier models on each patch. This eliminates some hallucinations. That said, in terms of review, the LLMs can only do so much. The sad truth is that our APIs (especially for rare events like PCIe errors, timeouts etc) have always been racy, and now LLMs don't let us ignore that. I expect our direction for the next release will be to tweak the reviews a little bit more, but start shifting focus to letting the LLMs take care of the busy work - managing patchwork, automating common process complaints, editing commit messages, and maybe applying patches which already got "reviewed-by" tags from people we trust... Core & protocols: - A few steps lowering rtnl_lock dependence: - per-netns netdev unregistration for select SW drivers (e.g. veth, ipvlan, tunnels) - rtnl_lock-less FIB rule changes (RTM_NEWRULE and RTM_DELRULE) - prepare software drivers and TC qdiscs for rtnl_lock-less GET - Support BIG TCP (>64kB TSO) in UDP tunnels (vxlan, geneve) - Support buffers larger than PAGE_SIZE in devmem zero-copy API - Improve MPTCP handling of extreme memory pressure handling, when out-of-order queue had to be pruned - Report the per-group user count via RTM_GETMULTICAST - Expose the route deletion reason in RTM_DELROUTE - Add a SO_RIGHTS_NOTRUNC option to UNIX sockets to enable more useful handling of LSM denials when receiving SCM_RIGHTS messages: instead of truncating the message at the first blocked fd, keep every fd slot and store the LSM errno in the blocked slot - IPv6 Segment Routing - support looking up the post-encap SID (address) in a different/specified routing table - Support PRP RedBox (interlink) creation - Support per-nexthop UDP dst port in VXLAN - Continue converting getsockopt callbacks in a number of protocols to iov_iter Ethernet: - Merge initial CXL support for AMD/Solarflare NICs (shared branch with the CXL tree) - New drivers: - ADIN1140 10BASE-T1S MACPHY - Initial skeleton of Intel iXD and ZTE Dinghai drivers - High-speed NICs: - AMD/Pensando: - support firmware flashing - Cisco (enic): - SR-IOV V2 admin channel and MBOX protocol - Huawei (hns3): - support for ethtool pfc_prevention_tout - nVidia/Mellanox: - support sharing bandwidth control across interfaces of the same device - Marvell (octeontx2-pf): - link RQ page pools to netdev for Netlink stats - Google vNIC: - XDP metadata support for DQ RDA - Microsoft vNIC: - support forcing full-page RX buffers - Other NICs: - Synopsys IP: - eic7700: support for eth1 - Microchip (lan743x): - support for RMII interface - Wangxun: - support for ethtool -G and -C for VFs - add Tx timeout and PCIe error handling - Intel (igb/igc): - RSS key get/set support - support for forcing link speed without auto-negotiation - Switches: - NXP (dpaa2): - support bonding/LAG offload - Mediatek: - mt7530: EN7528 support - initial support for MT7628 - Micrel (ksz8/9): - refactoring work to move towards library model - PTP support for KSZ8463 - nVidia/Mellanox: - support rtnl-lock-less ethtool callbacks - Realtek: - rtl8366rb: use generic RTL83xx code - support SGMII and HSGMII for RTL8367S - PHYs: - Airoha: - EcoNet EN7528 PHY support - DAPU Telecom - DAPU Telecom DAP8211R(I) Gigabit PHY support - Realtek: - support RTL8261C_CG - support RTL8261D Wireless: - nl80211: per-link statistics support for multi-link operation - mac80211: AQL/airtime-fairness support for multicast - Merge Peripheral Authentication Service (PAS) / TEE support for ath12k (shared branch with the firmware/qcom tree) - New drivers: - mm81x for Morse Micro Long-Range S1G devices - nxpwifi for NXP devices (mostly forked off from mwifiex) - Driver changes: - Broadcom (brcmfmac): - DPP support, some Cypress part update - MediaTek (mt76): - mt7928 support - mt7925 NAN support - mt7996 AP powersave improvements - Qualcomm (ath12k): - much kernel infrastructure integration work - AHB platform MultiPD support - Realtek (rt89): - LED support - RTL8922DE support - dual-BT coex for RTL8922D - Intel: - new FW version support Bluetooth: - HCI: add support for Shorter Connection Interval (SCI) feature - af_bluetooth: add minimal context analysis annotations - Driver changes: - Intel: - add Bluetooth SAR revision 2 support - add vendor_reset PCI sysfs for PLDR - Mediatek: - add USB IDs for MT7902 and MT7922 devices - Realtek: - add USB IDs for 8761CU and 8852BE devices - NXP: - add M.2 Bluetooth device support using pwrseq Misc: - DPLL support for manual/numerical oscillator control (NCO) (implement in zl3073x) - MCTP support for MCTP over USB v1.1 (DMTF DSP0283) - Power-over-Ethernet: support Realtek PSE controllers - Remove the IBM EHEA driver - Remove tulip/xircom_cb driver"* tag 'net-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1433 commits) net/mlx5e: do not HW-GRO coalesce small frames net: openvswitch: fix nf_connlabels leak in ovs_ct_init net: add missing ref_tracker_dir_exit() to alloc_netdev_mqs() net: openvswitch: fix flow mask use-after-free on flow deletion sctp: stop processing a packet once its association is deleted dpll: zl3073x: add PTP clock support dpll: zl3073x: add channel ToD, phase step and TIE operations dpll: zl3073x: scale poll interval proportionally to timeout ptp: vmclock: prevent read-only mappings from becoming writable ipv4: reject undersized MTUs in ip_do_fragment() bonding: initialize err for empty target lists net: dsa: initial support for MT7628 embedded switch net: dsa: initial MT7628 tagging driver net: phy: mediatek: add phy driver for MT7628 built-in Fast Ethernet PHYs dt-bindings: net: dsa: add MT7628 ESW net: pse-pd: realtek-pse-mcu: add UART transport net: pse-pd: realtek-pse-mcu: add I2C transport net: pse-pd: add Realtek PSE MCU core dt-bindings: net: pse-pd: add bindings for Realtek PSE MCU vsock: use sock_error() to consume sk_err after a failed connect ... List of files: /linux/tools/testing/selftests/net/hsr/Makefile

d5990d2a8689ab35c36aa500bac33226f7a86f00 - Merge branch 'net-hsr-prp-redbox-prp-san-support'

Tue, 28 Jul 2026 02:46:47 +0200

Merge branch 'net-hsr-prp-redbox-prp-san-support'Xin Xie says:====================net: hsr: PRP RedBox (PRP-SAN) supportThis series adds PRP RedBox support to the hsr driver: a PRP node thatproxies one or more SANs sitting behind an interlink port (IEC 62439-3,PRP-SAN). HSR-SAN has been supported since commit 5055cccfc2d1 ("net: hsr:Provide RedBox support (HSR-SAN)"); this extends the equivalent capabilityto PRP, reusing the existing protocol-neutral proxy machinery(proxy_node_db, hsr_proxy_announce(), hsr_prune_proxy_nodes()).A SAN behind the interlink does bidirectional unicast with peers on the PRPnetwork, its source MAC is preserved on the wire, the PRP RCT is correct,and the RedBox announces each proxied SAN with the RedBox-MAC TLV (Type 30)in its supervision frames.The series is bisect-safe: the datapath, duplicate discard and supervisionsupport are added first; the rtnetlink rejection of "type hsr ... interlink proto 1" is removed only in patch 3, once the feature is complete.Design notes: - prp_drop_frame() does not walk the node tables. The destination classification (PRP-network node vs proxied SAN) is resolved once per frame in fill_frame_info() and cached in struct hsr_frame_info, so the per egress-port drop decision is O(1) in the softIRQ path. The classification is gated on PRP RedBox devices (prot_version == PRP_V1 && hsr->redbox), so HSR RedBox traffic is not affected. - The LAN A/B duplicate test is factored into prp_is_lan_dup() so the new PRP interlink rules in prp_drop_frame() do not change hsr_drop_frame() behaviour, including the NETIF_F_HW_HSR_FWD path. This is software PRP RedBox only; it adds no new hardware-offload contract. - The supervision emitter uses pre-reserved tailroom (hsr_init_skb() + skb_put()) on the existing GFP_ATOMIC path; no skb_linearize() or pskb_expand_head(). The RedBox-MAC TLV is followed by an explicit EOT (Type 0, Length 0); padding via skb_put_padto(ETH_ZLEN) and the 6-byte PRP RCT remain at the absolute tail of the egress frame. - The hsr_get_node() hsr_ethhdr length guard is relaxed only for PRP supervision frames (prot_version == PRP_V1 && ETH_P_PRP && is_sup), which are untagged with mac_len == ETH_HLEN. HSR (ETH_P_HSR) supervision is front-tagged and keeps the original length requirement, so HSR malformed-frame filtering is unchanged.====================Link: https://patch.msgid.link/20260717201457.54-1-xiexinet@gmail.comSigned-off-by: Jakub Kicinski List of files: /linux/tools/testing/selftests/net/hsr/Makefile

6d548d0fc16058d3c24b9125f43b56cf5369b0d6 - selftests: net: hsr: add PRP RedBox test

Fri, 17 Jul 2026 22:14:57 +0200

selftests: net: hsr: add PRP RedBox testAdd a kselftest that builds a PRP RedBox (interlink) with a SAN behind theinterlink and a peer DANP, and checks bidirectional unicast across theinterlink, preservation of the SAN source MAC on the PRP network, and thatthe proxy-announce supervision frame carries the RedBox-MAC TLV (Type 30)terminated by an EOT marker. It reuses the hsr_common.sh / lib.sh helpersand skips cleanly on a kernel or iproute2 without PRP interlink support.The background ping is killed by its exact PID: ip netns exec does notisolate the PID namespace, so a pattern-based pkill could hit unrelatedprocesses on the host.Signed-off-by: Xin Xie Link: https://patch.msgid.link/20260717201457.54-5-xiexinet@gmail.comSigned-off-by: Jakub Kicinski List of files: /linux/tools/testing/selftests/net/hsr/Makefile

5c8cbca290acdd49a694b36c0af76ba0c00bbf12 - Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEAD

Thu, 21 May 2026 22:36:50 +0200

Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEADMerge the branch with the soc/qcom changes, required for the next UBWCpatches.Signed-off-by: Dmitry Baryshkov List of files: /linux/tools/testing/selftests/net/hsr/Makefile

8edf8b09fc44990977b3fbcb708035b1740d0b7e - Merge drm/drm-next into drm-intel-gt-next

Tue, 12 May 2026 10:16:35 +0200

Merge drm/drm-next into drm-intel-gt-nextBackmerging to pull in commit 5401b9adebc9 ("i915: don't usea vma that didn't match the context VM") to revert it.Signed-off-by: Joonas Lahtinen List of files: /linux/tools/testing/selftests/net/hsr/Makefile

1655f6895a896eb632ca8a019259bc5d358a9712 - Merge tag 'timers-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource

Sun, 12 Apr 2026 22:33:39 +0200

Merge tag 'timers-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource - Added the DT bindings for the compatible string 'fsl,imx25-epit' (Frank Li) - Made the rttm_cs variable static for the rtl otto timer driver (Krzysztof Kozlowski) - Fixed error return code handling in the sun5i timer driver (Chen Ni) - Made the timer-of and the mmio code compatible with modules (Daniel Lezcano)Link: https://lore.kernel.org/151feae1-39ba-4abd-a9f9-9bff377a2cd8@oss.qualcomm.com List of files: /linux/tools/testing/selftests/net/hsr/Makefile

f4b369c6fe0ceaba2da2daff8c9eb415f85926dd - Merge branch 'next' into for-linus

Mon, 20 Apr 2026 03:28:57 +0200

Merge branch 'next' into for-linusPrepare input updates for 7.1 merge window. List of files: /linux/tools/testing/selftests/net/hsr/Makefile

0421ccdfad0d92713a812a5aeb7d07b0ea7213c8 - Merge tag 'v7.0-rc3' into next

Thu, 12 Mar 2026 18:44:42 +0100

Merge tag 'v7.0-rc3' into nextSync up with the mainline to brig up the latest changes, specificallychanges to ALPS driver. List of files: /linux/tools/testing/selftests/net/hsr/Makefile

3e9e952bb3139ad1e08f3e1960239c2988ab90c9 - Merge branch 'for-7.1-printf-kunit-build' into for-linus

Mon, 20 Apr 2026 13:41:28 +0200

Merge branch 'for-7.1-printf-kunit-build' into for-linus List of files: /linux/tools/testing/selftests/net/hsr/Makefile

42d3b66d4cdbacfc9d120d2301b8de89cc29a914 - Merge drm/drm-next into drm-xe-next

Thu, 12 Mar 2026 15:17:56 +0100

Merge drm/drm-next into drm-xe-nextBackmerging to bring in 7.00-rc3. Important ahead GPU SVM merging THPsupport.Signed-off-by: Matthew Brost List of files: /linux/tools/testing/selftests/net/hsr/Makefile

f09812b85fa6f41058bcc46e70ac406bf9b0493a - Merge drm/drm-next into drm-intel-next

Wed, 25 Feb 2026 12:23:04 +0100

Merge drm/drm-next into drm-intel-nextSync with v7.0-rc1 which contains a few treewide changes affecting i915.Signed-off-by: Jani Nikula List of files: /linux/tools/testing/selftests/net/hsr/Makefile

8b85987d3cf50178f67618122d9f3bb202f62f42 - Merge drm/drm-next into drm-misc-next

Mon, 23 Feb 2026 11:48:20 +0100

Merge drm/drm-next into drm-misc-nextLet's merge 7.0-rc1 to start the new drm-misc-next windowSigned-off-by: Maxime Ripard List of files: /linux/tools/testing/selftests/net/hsr/Makefile

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

Mon, 23 Feb 2026 10:09:45 +0100

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/tools/testing/selftests/net/hsr/Makefile

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

Thu, 12 Feb 2026 04:31:52 +0100

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/tools/testing/selftests/net/hsr/Makefile

4f65ee7e0cbfd6ff4db88a60a08bb10f1fdc4ecc - Merge branch 'hsr-implement-more-robust-duplicate-discard-algorithm'

Tue, 10 Feb 2026 12:02:31 +0100

Merge branch 'hsr-implement-more-robust-duplicate-discard-algorithm'Felix Maurer says:====================hsr: Implement more robust duplicate discard algorithmThe duplicate discard algorithms for PRP and HSR do not work reliablywith certain link faults. Especially with packet loss on one link, theduplicate discard algorithms drop valid packets. For a more thoroughdescription see patches 4 (for PRP) and 6 (for HSR).This patchset replaces the current algorithms (based on a drop windowfor PRP and highest seen sequence number for HSR) with a single new onethat tracks the received sequence numbers individually (descriptionsagain in patches 4 and 6).The changes will lead to higher memory usage and more work to do foreach packet. But I argue that this is an acceptable trade-off to makefor a more robust PRP and HSR behavior with faulty links. After all,both protocols are to be used in environments where redundancy is neededand people are willing to setup special network topologies to achievethat.Some more reasoning on the overhead and expected scale of the deploymentfrom the RFC discussion:> As for the expected scale, there are two dimensions: the number of nodes> in the network and the data rate with which they send.>> The number of nodes in the network affect the memory usage because each> node now has the block buffer. For PRP that's 64 blocks * 32 byte => 2kbyte for each node in the node table. A PRP network doesn't have an> explicit limit for the number of nodes. However, the whole network is a> single layer-2 segment which shouldn't grow too large anyways. Even if> one really tries to put 1000 nodes into the PRP network, the memory> overhead (2Mbyte) is acceptable in my opinion.>> For HSR, the blocks would be larger because we need to track the> sequence numbers per port. I expect 64 blocks * 80 byte = 5kbyte per> node in the node table. There is no explicit limit for the size of an> HSR ring either. But I expect them to be of limited size because the> forwarding delays add up throughout the ring. I've seen vendors limiting> the ring size to 50 nodes with 100Mbit/s links and 300 with 1Gbit/s> links. In both cases I consider the memory overhead acceptable.>> The data rates are harder to reason about. In general, the data rates> for HSR and PRP are limited because too high packet rates would lead to> very fast re-use of the 16bit sequence numbers. The IEC 62439-3:2021> mentions 100Mbit/s links and 1Gbit/s links. I don't expect HSR or PRP> networks to scale out to, e.g., 10Gbit/s links with the current> specification as this would mean that sequence numbers could repeat as> often as every ~4ms. The default constants in the IEC standard, which we> also use, are oriented at a 100Mbit/s network.>> In my tests with veth pairs, the CPU overhead didn't lead to> significantly lower data rates. The main factor limiting the data rate> at the moment, I assume, is the per-node spinlock that is taken for each> received packet. IMHO, there is a lot more to gain in terms of CPU> overhead from making this lock smaller or getting rid of it, than we> loose with the more accurate duplicate discard algorithm in this patchset.>> The CPU overhead of the algorithm benefits from the fact that in high> packet rate scenarios (where it really matters) many packets will have> sequence numbers in already initialized blocks. These packets just have> additionally: one xarray lookup, one comparison, and one bit setting. If> a block needs to be initialized (once every 128 packets plus their 128> duplicates if all sequence numbers are seen), we will have: one> xa_erase, a bunch of memory writes, and one xa_store.>> In theory, all packets could end up in the slow path if a node sends> every 128th packet to us. If this is sent from a well behaving node, the> packet rate wouldn't be an issue anymore, though.Signed-off-by: Felix Maurer ====================Link: https://patch.msgid.link/cover.1770299429.git.fmaurer@redhat.comSigned-off-by: Paolo Abeni List of files: /linux/tools/testing/selftests/net/hsr/Makefile

ca4a09a950d27909a16cebe512544bb01b8ce2e5 - selftests: hsr: Add tests for faulty links

Thu, 05 Feb 2026 14:57:30 +0100

selftests: hsr: Add tests for faulty linksAdd a test case that can support different types of faulty links for allprotocol versions (HSRv0, HSRv1, PRPv1). It starts with a baseline withfully functional links. The first faulty case is one link being cut duringthe ping. This test uses a different function for ping that sends morepackets in shorter intervals to stress the duplicate detection algorithms abit more and allow for future tests with other link faults (packet loss,reordering, etc.).As the link fault tests now cover the cut link for HSR and PRP, it can beremoved from the hsr_ping test. Note that the removed cut link test did notreally test the fault because do_ping_long takes about 1sec while the linkis only cut after a 3sec sleep.Signed-off-by: Felix Maurer Reviewed-by: Sebastian Andrzej Siewior Link: https://patch.msgid.link/dad52276e2c349ecb96168bef7e3001bf7becc81.1770299429.git.fmaurer@redhat.comSigned-off-by: Paolo Abeni List of files: /linux/tools/testing/selftests/net/hsr/Makefile

c01a6c700fd54dd775020a8ddfe69dedeaca73cc - selftests: hsr: Add ping test for PRP

Thu, 05 Feb 2026 14:57:28 +0100

selftests: hsr: Add ping test for PRPAdd a selftest for PRP that performs a basic ping test on IPv4 and IPv6,over the plain PRP interface and a VLAN interface, similar to the existingping test for HSR. The test first checks reachability of the other node,then checks for no loss and no duplicates.Signed-off-by: Felix Maurer Reviewed-by: Sebastian Andrzej Siewior Link: https://patch.msgid.link/4a342189e842d7308d037da72af566729ee75834.1770299429.git.fmaurer@redhat.comSigned-off-by: Paolo Abeni List of files: /linux/tools/testing/selftests/net/hsr/Makefile

a4a508df2aa34f8650afde54ea804321c618f45f - Merge tag 'v6.18' into next

Sat, 13 Dec 2025 10:18:20 +0100

Merge tag 'v6.18' into nextSync up with the mainline to bring in the latest APIs. List of files: /linux/tools/testing/selftests/net/hsr/Makefile

7362b5b493102c6b71827c2da22117b475528f6d - Merge branch 'for-6.19/nintendo' into for-linus

Tue, 02 Dec 2025 14:46:11 +0100

Merge branch 'for-6.19/nintendo' into for-linus- switch to WQ_PERCPU workaueues (Marco Crivellari)- reduce potential initialization blocking time of hid-nintendo (Willy Huang) List of files: /linux/tools/testing/selftests/net/hsr/Makefile