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2025-01-22Merge tag 'net-next-6.14' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Paolo Abeni: "This is slightly smaller than usual, with the most interesting work being still around RTNL scope reduction. Core: - More core refactoring to reduce the RTNL lock contention, including preparatory work for the per-network namespace RTNL lock, replacing RTNL lock with a per device-one to protect NAPI-related net device data and moving synchronize_net() calls outside such lock. - Extend drop reasons usage, adding net scheduler, AF_UNIX, bridge and more specific TCP coverage. - Reduce network namespace tear-down time by removing per-subsystems synchronize_net() in tipc and sched. - Add flow label selector support for fib rules, allowing traffic redirection based on such header field. Netfilter: - Do not remove netdev basechain when last device is gone, allowing netdev basechains without devices. - Revisit the flowtable teardown strategy, dealing better with fin, reset and re-open events. - Scale-up IP-vs connection dumping by avoiding linear search on each restart. Protocols: - A significant XDP socket refactor, consolidating and optimizing several helpers into the core - Better scaling of ICMP rate-limiting, by removing false-sharing in inet peers handling. - Introduces netlink notifications for multicast IPv4 and IPv6 address changes. - Add ipsec support for IP-TFS/AggFrag encapsulation, allowing aggregation and fragmentation of the inner IP. - Add sysctl to configure TIME-WAIT reuse delay for TCP sockets, to avoid local port exhaustion issues when the average connection lifetime is very short. - Support updating keys (re-keying) for connections using kernel TLS (for TLS 1.3 only). - Support ipv4-mapped ipv6 address clients in smc-r v2. - Add support for jumbo data packet transmission in RxRPC sockets, gluing multiple data packets in a single UDP packet. - Support RxRPC RACK-TLP to manage packet loss and retransmission in conjunction with the congestion control algorithm. Driver API: - Introduce a unified and structured interface for reporting PHY statistics, exposing consistent data across different H/W via ethtool. - Make timestamping selectable, allow the user to select the desired hwtstamp provider (PHY or MAC) administratively. - Add support for configuring a header-data-split threshold (HDS) value via ethtool, to deal with partial or buggy H/W implementation. - Consolidate DSA drivers Energy Efficiency Ethernet support. - Add EEE management to phylink, making use of the phylib implementation. - Add phylib support for in-band capabilities negotiation. - Simplify how phylib-enabled mac drivers expose the supported interfaces. Tests and tooling: - Make the YNL tool package-friendly to make it easier to deploy it separately from the kernel. - Increase TCP selftest coverage importing several packetdrill test-cases. - Regenerate the ethtool uapi header from the YNL spec, to ease maintenance and future development. - Add YNL support for decoding the link types used in net self-tests, allowing a single build to run both net and drivers/net. Drivers: - Ethernet high-speed NICs: - nVidia/Mellanox (mlx5): - add cross E-Switch QoS support - add SW Steering support for ConnectX-8 - implement support for HW-Managed Flow Steering, improving the rule deletion/insertion rate - support for multi-host LAG - Intel (ixgbe, ice, igb): - ice: add support for devlink health events - ixgbe: add initial support for E610 chipset variant - igb: add support for AF_XDP zero-copy - Meta: - add support for basic RSS config - allow changing the number of channels - add hardware monitoring support - Broadcom (bnxt): - implement TCP data split and HDS threshold ethtool support, enabling Device Memory TCP. - Marvell Octeon: - implement egress ipsec offload support for the cn10k family - Hisilicon (HIBMC): - implement unicast MAC filtering - Ethernet NICs embedded and virtual: - Convert UDP tunnel drivers to NETDEV_PCPU_STAT_DSTATS, avoiding contented atomic operations for drop counters - Freescale: - quicc: phylink conversion - enetc: support Tx and Rx checksum offload and improve TSO performances - MediaTek: - airoha: introduce support for ETS and HTB Qdisc offload - Microchip: - lan78XX USB: preparation work for phylink conversion - Synopsys (stmmac): - support DWMAC IP on NXP Automotive SoCs S32G2xx/S32G3xx/S32R45 - refactor EEE support to leverage the new driver API - optimize DMA and cache access to increase raw RX performances by 40% - TI: - icssg-prueth: add multicast filtering support for VLAN interface - netkit: - add ability to configure head/tailroom - VXLAN: - accepts packets with user-defined reserved bit - Ethernet switches: - Microchip: - lan969x: add RGMII support - lan969x: improve TX and RX performance using the FDMA engine - nVidia/Mellanox: - move Tx header handling to PCI driver, to ease XDP support - Ethernet PHYs: - Texas Instruments DP83822: - add support for GPIO2 clock output - Realtek: - 8169: add support for RTL8125D rev.b - rtl822x: add hwmon support for the temperature sensor - Microchip: - add support for RDS PTP hardware - consolidate periodic output signal generation - CAN: - several DT-bindings to DT schema conversions - tcan4x5x: - add HW standby support - support nWKRQ voltage selection - kvaser: - allowing Bus Error Reporting runtime configuration - WiFi: - the on-going Multi-Link Operation (MLO) effort continues, affecting both the stack and in drivers - mac80211/cfg80211: - Emergency Preparedness Communication Services (EPCS) station mode support - support for adding and removing station links for MLO - add support for WiFi 7/EHT mesh over 320 MHz channels - report Tx power info for each link - RealTek (rtw88): - enable USB Rx aggregation and USB 3 to improve performance - LED support - RealTek (rtw89): - refactor power save to support Multi-Link Operations - add support for RTL8922AE-VS variant - MediaTek (mt76): - single wiphy multiband support (preparation for MLO) - p2p device support - add TP-Link TXE50UH USB adapter support - Qualcomm (ath10k): - support for the QCA6698AQ IP core - Qualcomm (ath12k): - enable MLO for QCN9274 - Bluetooth: - Allow sysfs to trigger hdev reset, to allow recovering devices not responsive from user-space - MediaTek: add support for MT7922, MT7925, MT7921e devices - Realtek: add support for RTL8851BE devices - Qualcomm: add support for WCN785x devices - ISO: allow BIG re-sync" * tag 'net-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1386 commits) net/rose: prevent integer overflows in rose_setsockopt() net: phylink: fix regression when binding a PHY net: ethernet: ti: am65-cpsw: streamline TX queue creation and cleanup net: ethernet: ti: am65-cpsw: streamline RX queue creation and cleanup net: ethernet: ti: am65-cpsw: ensure proper channel cleanup in error path ipv6: Convert inet6_rtm_deladdr() to per-netns RTNL. ipv6: Convert inet6_rtm_newaddr() to per-netns RTNL. ipv6: Move lifetime validation to inet6_rtm_newaddr(). ipv6: Set cfg.ifa_flags before device lookup in inet6_rtm_newaddr(). ipv6: Pass dev to inet6_addr_add(). ipv6: Convert inet6_ioctl() to per-netns RTNL. ipv6: Hold rtnl_net_lock() in addrconf_init() and addrconf_cleanup(). ipv6: Hold rtnl_net_lock() in addrconf_dad_work(). ipv6: Hold rtnl_net_lock() in addrconf_verify_work(). ipv6: Convert net.ipv6.conf.${DEV}.XXX sysctl to per-netns RTNL. ipv6: Add __in6_dev_get_rtnl_net(). net: stmmac: Drop redundant skb_mark_for_recycle() for SKB frags net: mii: Fix the Speed display when the network cable is not connected sysctl net: Remove macro checks for CONFIG_SYSCTL eth: bnxt: update header sizing defaults ...
2025-01-20Merge tag 'for-6.14/io_uring-20250119' of git://git.kernel.dk/linuxLinus Torvalds
Pull io_uring updates from Jens Axboe: "Not a lot in terms of features this time around, mostly just cleanups and code consolidation: - Support for PI meta data read/write via io_uring, with NVMe and SCSI covered - Cleanup the per-op structure caching, making it consistent across various command types - Consolidate the various user mapped features into a concept called regions, making the various users of that consistent - Various cleanups and fixes" * tag 'for-6.14/io_uring-20250119' of git://git.kernel.dk/linux: (56 commits) io_uring/fdinfo: fix io_uring_show_fdinfo() misuse of ->d_iname io_uring: reuse io_should_terminate_tw() for cmds io_uring: Factor out a function to parse restrictions io_uring/rsrc: require cloned buffers to share accounting contexts io_uring: simplify the SQPOLL thread check when cancelling requests io_uring: expose read/write attribute capability io_uring/rw: don't gate retry on completion context io_uring/rw: handle -EAGAIN retry at IO completion time io_uring/rw: use io_rw_recycle() from cleanup path io_uring/rsrc: simplify the bvec iter count calculation io_uring: ensure io_queue_deferred() is out-of-line io_uring/rw: always clear ->bytes_done on io_async_rw setup io_uring/rw: use NULL for rw->free_iovec assigment io_uring/rw: don't mask in f_iocb_flags io_uring/msg_ring: Drop custom destructor io_uring: Move old async data allocation helper to header io_uring/rw: Allocate async data through helper io_uring/net: Allocate msghdr async data through helper io_uring/uring_cmd: Allocate async data through generic helper io_uring/poll: Allocate apoll with generic alloc_cache helper ...
2025-01-20Merge tag 'for-6.14/block-20250118' of git://git.kernel.dk/linuxLinus Torvalds
Pull block updates from Jens Axboe: - NVMe pull requests via Keith: - Target support for PCI-Endpoint transport (Damien) - TCP IO queue spreading fixes (Sagi, Chaitanya) - Target handling for "limited retry" flags (Guixen) - Poll type fix (Yongsoo) - Xarray storage error handling (Keisuke) - Host memory buffer free size fix on error (Francis) - MD pull requests via Song: - Reintroduce md-linear (Yu Kuai) - md-bitmap refactor and fix (Yu Kuai) - Replace kmap_atomic with kmap_local_page (David Reaver) - Quite a few queue freeze and debugfs deadlock fixes Ming introduced lockdep support for this in the 6.13 kernel, and it has (unsurprisingly) uncovered quite a few issues - Use const attributes for IO schedulers - Remove bio ioprio wrappers - Fixes for stacked device atomic write support - Refactor queue affinity helpers, in preparation for better supporting isolated CPUs - Cleanups of loop O_DIRECT handling - Cleanup of BLK_MQ_F_* flags - Add rotational support for null_blk - Various fixes and cleanups * tag 'for-6.14/block-20250118' of git://git.kernel.dk/linux: (106 commits) block: Don't trim an atomic write block: Add common atomic writes enable flag md/md-linear: Fix a NULL vs IS_ERR() bug in linear_add() block: limit disk max sectors to (LLONG_MAX >> 9) block: Change blk_stack_atomic_writes_limits() unit_min check block: Ensure start sector is aligned for stacking atomic writes blk-mq: Move more error handling into blk_mq_submit_bio() block: Reorder the request allocation code in blk_mq_submit_bio() nvme: fix bogus kzalloc() return check in nvme_init_effects_log() md/md-bitmap: move bitmap_{start, end}write to md upper layer md/raid5: implement pers->bitmap_sector() md: add a new callback pers->bitmap_sector() md/md-bitmap: remove the last parameter for bimtap_ops->endwrite() md/md-bitmap: factor behind write counters out from bitmap_{start/end}write() md: Replace deprecated kmap_atomic() with kmap_local_page() md: reintroduce md-linear partitions: ldm: remove the initial kernel-doc notation blk-cgroup: rwstat: fix kernel-doc warnings in header file blk-cgroup: fix kernel-doc warnings in header file nbd: fix partial sending ...
2025-01-20Merge tag 'vfs-6.14-rc1.statx.dio' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs direct-io updates from Christian Brauner: "File systems that write out of place usually require different alignment for direct I/O writes than what they can do for reads. Add a separate dio read align field to statx, as many out of place write file systems can easily do reads aligned to the device sector size, but require bigger alignment for writes. This is usually papered over by falling back to buffered I/O for smaller writes and doing read-modify-write cycles, but performance for this sucks, so applications benefit from knowing the actual write alignment" * tag 'vfs-6.14-rc1.statx.dio' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: xfs: report larger dio alignment for COW inodes xfs: report the correct read/write dio alignment for reflinked inodes xfs: cleanup xfs_vn_getattr fs: add STATX_DIO_READ_ALIGN fs: reformat the statx definition
2025-01-20Merge tag 'vfs-6.14-rc1.misc' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull misc vfs updates from Christian Brauner: "Features: - Support caching symlink lengths in inodes The size is stored in a new union utilizing the same space as i_devices, thus avoiding growing the struct or taking up any more space When utilized it dodges strlen() in vfs_readlink(), giving about 1.5% speed up when issuing readlink on /initrd.img on ext4 - Add RWF_DONTCACHE iocb and FOP_DONTCACHE file_operations flag If a file system supports uncached buffered IO, it may set FOP_DONTCACHE and enable support for RWF_DONTCACHE. If RWF_DONTCACHE is attempted without the file system supporting it, it'll get errored with -EOPNOTSUPP - Enable VBOXGUEST and VBOXSF_FS on ARM64 Now that VirtualBox is able to run as a host on arm64 (e.g. the Apple M3 processors) we can enable VBOXSF_FS (and in turn VBOXGUEST) for this architecture. Tested with various runs of bonnie++ and dbench on an Apple MacBook Pro with the latest Virtualbox 7.1.4 r165100 installed Cleanups: - Delay sysctl_nr_open check in expand_files() - Use kernel-doc includes in fiemap docbook - Use page->private instead of page->index in watch_queue - Use a consume fence in mnt_idmap() as it's heavily used in link_path_walk() - Replace magic number 7 with ARRAY_SIZE() in fc_log - Sort out a stale comment about races between fd alloc and dup2() - Fix return type of do_mount() from long to int - Various cosmetic cleanups for the lockref code Fixes: - Annotate spinning as unlikely() in __read_seqcount_begin The annotation already used to be there, but got lost in commit 52ac39e5db51 ("seqlock: seqcount_t: Implement all read APIs as statement expressions") - Fix proc_handler for sysctl_nr_open - Flush delayed work in delayed fput() - Fix grammar and spelling in propagate_umount() - Fix ESP not readable during coredump In /proc/PID/stat, there is the kstkesp field which is the stack pointer of a thread. While the thread is active, this field reads zero. But during a coredump, it should have a valid value However, at the moment, kstkesp is zero even during coredump - Don't wake up the writer if the pipe is still full - Fix unbalanced user_access_end() in select code" * tag 'vfs-6.14-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (28 commits) gfs2: use lockref_init for qd_lockref erofs: use lockref_init for pcl->lockref dcache: use lockref_init for d_lockref lockref: add a lockref_init helper lockref: drop superfluous externs lockref: use bool for false/true returns lockref: improve the lockref_get_not_zero description lockref: remove lockref_put_not_zero fs: Fix return type of do_mount() from long to int select: Fix unbalanced user_access_end() vbox: Enable VBOXGUEST and VBOXSF_FS on ARM64 pipe_read: don't wake up the writer if the pipe is still full selftests: coredump: Add stackdump test fs/proc: do_task_stat: Fix ESP not readable during coredump fs: add RWF_DONTCACHE iocb and FOP_DONTCACHE file_operations flag fs: sort out a stale comment about races between fd alloc and dup2 fs: Fix grammar and spelling in propagate_umount() fs: fc_log replace magic number 7 with ARRAY_SIZE() fs: use a consume fence in mnt_idmap() file: flush delayed work in delayed fput() ...
2025-01-18Merge tag 'wireless-next-2025-01-17' of ↵Jakub Kicinski
git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next Kalle Valo says: ==================== wireless-next patches for v6.14 Most likely the last "new features" pull request for v6.14 and this is a bigger one. Multi-Link Operation (MLO) work continues both in stack in drivers. Few new devices supported and usual fixes all over. Major changes: cfg80211 * Emergency Preparedness Communication Services (EPCS) station mode support mac80211 * an option to filter a sta from being flushed * some support for RX Operating Mode Indication (OMI) power saving * support for adding and removing station links for MLO iwlwifi * new device ids * rework firmware error handling and restart rtw88 * RTL8812A: RFE type 2 support * LED support rtw89 * variant info to support RTL8922AE-VS mt76 * mt7996: single wiphy multiband support (preparation for MLO) * mt7996: support for more variants * mt792x: P2P_DEVICE support * mt7921u: TP-Link TXE50UH support ath12k * enable MLO for QCN9274 (although it seems to be broken with dual band devices) * MLO radar detection support * debugfs: transmit buffer OFDMA, AST entry and puncture stats * tag 'wireless-next-2025-01-17' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (322 commits) wifi: brcmfmac: fix NULL pointer dereference in brcmf_txfinalize() wifi: rtw88: add RTW88_LEDS depends on LEDS_CLASS to Kconfig wifi: wilc1000: unregister wiphy only after netdev registration wifi: cfg80211: adjust allocation of colocated AP data wifi: mac80211: fix memory leak in ieee80211_mgd_assoc_ml_reconf() wifi: ath12k: fix key cache handling wifi: ath12k: Fix uninitialized variable access in ath12k_mac_allocate() function wifi: ath12k: Remove ath12k_get_num_hw() helper function wifi: ath12k: Refactor the ath12k_hw get helper function argument wifi: ath12k: Refactor ath12k_hw set helper function argument wifi: mt76: mt7996: add implicit beamforming support for mt7992 wifi: mt76: mt7996: fix beacon command during disabling wifi: mt76: mt7996: fix ldpc setting wifi: mt76: mt7996: fix definition of tx descriptor wifi: mt76: connac: adjust phy capabilities based on band constraints wifi: mt76: mt7996: fix incorrect indexing of MIB FW event wifi: mt76: mt7996: fix HE Phy capability wifi: mt76: mt7996: fix the capability of reception of EHT MU PPDU wifi: mt76: mt7996: add max mpdu len capability wifi: mt76: mt7921: avoid undesired changes of the preset regulatory domain ... ==================== Link: https://patch.msgid.link/20250117203529.72D45C4CEDD@smtp.kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-17net: ethtool: ts: add separate counter for unconfirmed one-step TX timestampsVladimir Oltean
For packets with two-step timestamp requests, the hardware timestamp comes back to the driver through a confirmation mechanism of sorts, which allows the driver to confidently bump the successful "pkts" counter. For one-step PTP, the NIC is supposed to autonomously insert its hardware TX timestamp in the packet headers while simultaneously transmitting it. There may be a confirmation that this was done successfully, or there may not. None of the current drivers which implement ethtool_ops :: get_ts_stats() also support HWTSTAMP_TX_ONESTEP_SYNC or HWTSTAMP_TX_ONESTEP_SYNC, so it is a bit unclear which model to follow. But there are NICs, such as DSA, where there is no transmit confirmation at all. Here, it would be wrong / misleading to increment the successful "pkts" counter, because one-step PTP packets can be dropped on TX just like any other packets. So introduce a special counter which signifies "yes, an attempt was made, but we don't know whether it also exited the port or not". I expect that for one-step PTP packets where a confirmation is available, the "pkts" counter would be bumped. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Link: https://patch.msgid.link/20250116104628.123555-2-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-16net: mdio: add definition for clock stop capable bitRussell King (Oracle)
Add a definition for the clock stop capable bit in the PCS MMD. This bit indicates whether the MAC is able to stop the transmit xMII clock while it is signalling LPI. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/E1tYADb-0014PV-6T@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15net: ethtool: add support for configuring hds-threshTaehee Yoo
The hds-thresh option configures the threshold value of the header-data-split. If a received packet size is larger than this threshold value, a packet will be split into header and payload. The header indicates TCP and UDP header, but it depends on driver spec. The bnxt_en driver supports HDS(Header-Data-Split) configuration at FW level, affecting TCP and UDP too. So, If hds-thresh is set, it affects UDP and TCP packets. Example: # ethtool -G <interface name> hds-thresh <value> # ethtool -G enp14s0f0np0 tcp-data-split on hds-thresh 256 # ethtool -g enp14s0f0np0 Ring parameters for enp14s0f0np0: Pre-set maximums: ... HDS thresh: 1023 Current hardware settings: ... TCP data split: on HDS thresh: 256 The default/min/max values are not defined in the ethtool so the drivers should define themself. The 0 value means that all TCP/UDP packets' header and payload will be split. Tested-by: Stanislav Fomichev <sdf@fomichev.me> Signed-off-by: Taehee Yoo <ap420073@gmail.com> Link: https://patch.msgid.link/20250114142852.3364986-3-ap420073@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-14tcp: add LINUX_MIB_PAWS_OLD_ACK SNMP counterEric Dumazet
Prior patch in the series added TCP_RFC7323_PAWS_ACK drop reason. This patch adds the corresponding SNMP counter, for folks using nstat instead of tracing for TCP diagnostics. nstat -az | grep PAWSOldAck Suggested-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Neal Cardwell <ncardwell@google.com> Reviewed-by: Jason Xing <kerneljasonxing@gmail.com> Tested-by: Neal Cardwell <ncardwell@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250113135558.3180360-4-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-14Merge tag 'nf-next-25-01-11' of ↵Paolo Abeni
git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next Pablo Neira Ayuso says: ==================== Netfilter/IPVS updates for net-next The following patchset contains a small batch of Netfilter/IPVS updates for net-next: 1) Remove unused genmask parameter in nf_tables_addchain() 2) Speed up reads from /proc/net/ip_vs_conn, from Florian Westphal. 3) Skip empty buckets in hashlimit to avoid atomic operations that results in false positive reports by syzbot with lockdep enabled, patch from Eric Dumazet. 4) Add conntrack event timestamps available via ctnetlink, from Florian Westphal. netfilter pull request 25-01-11 * tag 'nf-next-25-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next: netfilter: conntrack: add conntrack event timestamp netfilter: xt_hashlimit: htable_selective_cleanup() optimization ipvs: speed up reads from ip_vs_conn proc file netfilter: nf_tables: remove the genmask parameter ==================== Link: https://patch.msgid.link/20250111230800.67349-1-pablo@netfilter.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-01-14net: ethtool: add support for structured PHY statisticsJakub Kicinski
Introduce a new way to report PHY statistics in a structured and standardized format using the netlink API. This new method does not replace the old driver-specific stats, which can still be accessed with `ethtool -S <eth name>`. The structured stats are available with `ethtool -S <eth name> --all-groups`. This new method makes it easier to diagnose problems by organizing stats in a consistent and documented way. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-01-13md: reintroduce md-linearYu Kuai
THe md-linear is removed by commit 849d18e27be9 ("md: Remove deprecated CONFIG_MD_LINEAR") because it has been marked as deprecated for a long time. However, md-linear is used widely for underlying disks with different size, sadly we didn't know this until now, and it's true useful to create partitions and assemble multiple raid and then append one to the other. People have to use dm-linear in this case now, however, they will prefer to minimize the number of involved modules. Fixes: 849d18e27be9 ("md: Remove deprecated CONFIG_MD_LINEAR") Cc: stable@vger.kernel.org Signed-off-by: Yu Kuai <yukuai3@huawei.com> Acked-by: Coly Li <colyli@kernel.org> Acked-by: Mike Snitzer <snitzer@kernel.org> Link: https://lore.kernel.org/r/20250102112841.1227111-1-yukuai1@huaweicloud.com Signed-off-by: Song Liu <song@kernel.org>
2025-01-13wifi: cfg80211: Add support for controlling EPCSIlan Peer
Add support for configuring Emergency Preparedness Communication Services (EPCS) for station mode. Signed-off-by: Ilan Peer <ilan.peer@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://patch.msgid.link/20250102161730.ea54ac94445c.I11d750188bc0871e13e86146a3b5cc048d853e69@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13wifi: cfg80211: Add support for dynamic addition/removal of linksIlan Peer
Add support for requesting dynamic addition/removal of links to the current MLO association. Signed-off-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://patch.msgid.link/20250102161730.cef23352f2a2.I79c849974c494cb1cbf9e1b22a5d2d37395ff5ac@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13wifi: nl80211: permit userspace to pass supported selectorsBenjamin Berg
Currently the SAE_H2E selector already exists, which needs to be implemented by the SME. As new such selectors might be added in the future, add a feature to permit userspace to report a selector as supported. If not given, the kernel should assume that userspace does support SAE_H2E. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://patch.msgid.link/20250101070249.fe67b871cc39.Ieb98390328927e998e612345a58b6dbc00b0e3a2@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-10io_uring: expose read/write attribute capabilityAnuj Gupta
After commit 9a213d3b80c0, we can pass additional attributes along with read/write. However, userspace doesn't know that. Add a new feature flag IORING_FEAT_RW_ATTR, to notify the userspace that the kernel has this ability. Signed-off-by: Anuj Gupta <anuj20.g@samsung.com> Reviewed-by: Li Zetao <lizetao1@huawei.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Tested-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/20241205062109.1788-1-anuj20.g@samsung.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-01-10Merge tag 'ipsec-next-2025-01-09' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next Steffen Klassert says: ==================== ipsec-next-2025-01-09 1) Implement the AGGFRAG protocol and basic IP-TFS (RFC9347) functionality. From Christian Hopps. 2) Support ESN context update to hardware for TX. From Jianbo Liu. Please pull or let me know if there are problems. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2025-01-09fs: add STATX_DIO_READ_ALIGNChristoph Hellwig
Add a separate dio read align field, as many out of place write file systems can easily do reads aligned to the device sector size, but require bigger alignment for writes. This is usually papered over by falling back to buffered I/O for smaller writes and doing read-modify-write cycles, but performance for this sucks, so applications benefit from knowing the actual write alignment. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250109083109.1441561-3-hch@lst.de Reviewed-by: John Garry <john.g.garry@oracle.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-01-09fs: reformat the statx definitionChristoph Hellwig
The comments after the declaration are becoming rather unreadable with long enough comments. Move them into lines of their own. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250109083109.1441561-2-hch@lst.de Reviewed-by: John Garry <john.g.garry@oracle.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-01-09netfilter: conntrack: add conntrack event timestampFlorian Westphal
Nadia Pinaeva writes: I am working on a tool that allows collecting network performance metrics by using conntrack events. Start time of a conntrack entry is used to evaluate seen_reply latency, therefore the sooner it is timestamped, the better the precision is. In particular, when using this tool to compare the performance of the same feature implemented using iptables/nftables/OVS it is crucial to have the entry timestamped earlier to see any difference. At this time, conntrack events can only get timestamped at recv time in userspace, so there can be some delay between the event being generated and the userspace process consuming the message. There is sys/net/netfilter/nf_conntrack_timestamp, which adds a 64bit timestamp (ns resolution) that records start and stop times, but its not suited for this either, start time is the 'hashtable insertion time', not 'conntrack allocation time'. There is concern that moving the start-time moment to conntrack allocation will add overhead in case of flooding, where conntrack entries are allocated and released right away without getting inserted into the hashtable. Also, even if this was changed it would not with events other than new (start time) and destroy (stop time). Pablo suggested to add new CTA_TIMESTAMP_EVENT, this adds this feature. The timestamp is recorded in case both events are requested and the sys/net/netfilter/nf_conntrack_timestamp toggle is enabled. Reported-by: Nadia Pinaeva <n.m.pinaeva@gmail.com> Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2025-01-09netlink: add IPv6 anycast join/leave notificationsYuyang Huang
This change introduces a mechanism for notifying userspace applications about changes to IPv6 anycast addresses via netlink. It includes: * Addition and deletion of IPv6 anycast addresses are reported using RTM_NEWANYCAST and RTM_DELANYCAST. * A new netlink group (RTNLGRP_IPV6_ACADDR) for subscribing to these notifications. This enables user space applications(e.g. ip monitor) to efficiently track anycast addresses through netlink messages, improving metrics collection and system monitoring. It also unlocks the potential for advanced anycast management in user space, such as hardware offload control and fine grained network control. Cc: Maciej Żenczykowski <maze@google.com> Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Yuyang Huang <yuyanghuang@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20250107114355.1766086-1-yuyanghuang@google.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-01-07Merge tag 'for-netdev' of ↵Jakub Kicinski
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2025-01-07 We've added 7 non-merge commits during the last 32 day(s) which contain a total of 11 files changed, 190 insertions(+), 103 deletions(-). The main changes are: 1) Migrate the test_xdp_meta.sh BPF selftest into test_progs framework, from Bastien Curutchet. 2) Add ability to configure head/tailroom for netkit devices, from Daniel Borkmann. 3) Fixes and improvements to the xdp_hw_metadata selftest, from Song Yoong Siang. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: selftests/bpf: Extend netkit tests to validate set {head,tail}room netkit: Add add netkit {head,tail}room to rt_link.yaml netkit: Allow for configuring needed_{head,tail}room selftests/bpf: Migrate test_xdp_meta.sh into xdp_context_test_run.c selftests/bpf: test_xdp_meta: Rename BPF sections selftests/bpf: Enable Tx hwtstamp in xdp_hw_metadata selftests/bpf: Actuate tx_metadata_len in xdp_hw_metadata ==================== Link: https://patch.msgid.link/20250107130908.143644-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-06netkit: Allow for configuring needed_{head,tail}roomDaniel Borkmann
Allow the user to configure needed_{head,tail}room for both netkit devices. The idea is similar to 163e529200af ("veth: implement ndo_set_rx_headroom") with the difference that the two parameters can be specified upon device creation. By default the current behavior stays as is which is needed_{head,tail}room is 0. In case of Cilium, for example, the netkit devices are not enslaved into a bridge or openvswitch device (rather, BPF-based redirection is used out of tcx), and as such these parameters are not propagated into the Pod's netns via peer device. Given Cilium can run in vxlan/geneve tunneling mode (needed_headroom) and/or be used in combination with WireGuard (needed_{head,tail}room), allow the Cilium CNI plugin to specify these two upon netkit device creation. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://lore.kernel.org/bpf/20241220234658.490686-1-daniel@iogearbox.net
2025-01-04Merge branch 'vfs-6.14.uncached_buffered_io'Christian Brauner
Bring in the VFS changes for uncached buffered io. Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-01-04fs: add RWF_DONTCACHE iocb and FOP_DONTCACHE file_operations flagJens Axboe
If a file system supports uncached buffered IO, it may set FOP_DONTCACHE and enable support for RWF_DONTCACHE. If RWF_DONTCACHE is attempted without the file system supporting it, it'll get errored with -EOPNOTSUPP. Signed-off-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20241220154831.1086649-8-axboe@kernel.dk Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-01-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.13-rc6). No conflicts. Adjacent changes: include/linux/if_vlan.h f91a5b808938 ("af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK") 3f330db30638 ("net: reformat kdoc return statements") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-03Merge tag 'net-6.13-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from wireles and netfilter. Nothing major here. Over the last two weeks we gathered only around two-thirds of our normal weekly fix count, but delaying sending these until -rc7 seemed like a really bad idea. AFAIK we have no bugs under investigation. One or two reverts for stuff for which we haven't gotten a proper fix will likely come in the next PR. Current release - fix to a fix: - netfilter: nft_set_hash: unaligned atomic read on struct nft_set_ext - eth: gve: trigger RX NAPI instead of TX NAPI in gve_xsk_wakeup Previous releases - regressions: - net: reenable NETIF_F_IPV6_CSUM offload for BIG TCP packets - mptcp: - fix sleeping rcvmsg sleeping forever after bad recvbuffer adjust - fix TCP options overflow - prevent excessive coalescing on receive, fix throughput - net: fix memory leak in tcp_conn_request() if map insertion fails - wifi: cw1200: fix potential NULL dereference after conversion to GPIO descriptors - phy: micrel: dynamically control external clock of KSZ PHY, fix suspend behavior Previous releases - always broken: - af_packet: fix VLAN handling with MSG_PEEK - net: restrict SO_REUSEPORT to inet sockets - netdev-genl: avoid empty messages in NAPI get - dsa: microchip: fix set_ageing_time function on KSZ9477 and LAN937X - eth: - gve: XDP fixes around transmit, queue wakeup etc. - ti: icssg-prueth: fix firmware load sequence to prevent time jump which breaks timesync related operations Misc: - netlink: specs: mptcp: add missing attr and improve documentation" * tag 'net-6.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (50 commits) net: ti: icssg-prueth: Fix clearing of IEP_CMP_CFG registers during iep_init net: ti: icssg-prueth: Fix firmware load sequence. mptcp: prevent excessive coalescing on receive mptcp: don't always assume copied data in mptcp_cleanup_rbuf() mptcp: fix recvbuffer adjust on sleeping rcvmsg ila: serialize calls to nf_register_net_hooks() af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK af_packet: fix vlan_get_tci() vs MSG_PEEK net: wwan: iosm: Properly check for valid exec stage in ipc_mmio_init() net: restrict SO_REUSEPORT to inet sockets net: reenable NETIF_F_IPV6_CSUM offload for BIG TCP packets net: sfc: Correct key_len for efx_tc_ct_zone_ht_params net: wwan: t7xx: Fix FSM command timeout issue sky2: Add device ID 11ab:4373 for Marvell 88E8075 mptcp: fix TCP options overflow. net: mv643xx_eth: fix an OF node reference leak gve: trigger RX NAPI instead of TX NAPI in gve_xsk_wakeup eth: bcmsysport: fix call balance of priv->clk handling routines net: llc: reset skb->transport_header netlink: specs: mptcp: fix missing doc ...
2024-12-27netlink: specs: mptcp: clearly mention attributesMatthieu Baerts (NGI0)
The rendered version of the MPTCP events [1] looked strange, because the whole content of the 'doc' was displayed in the same block. It was then not clear that the first words, not even ended by a period, were the attributes that are defined when such events are emitted. These attributes have now been moved to the end, prefixed by 'Attributes:' and ended with a period. Note that '>-' has been added after 'doc:' to allow ':' in the text below. The documentation in the UAPI header has been auto-generated by: ./tools/net/ynl/ynl-regen.sh Link: https://docs.kernel.org/networking/netlink_spec/mptcp_pm.html#event-type [1] Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20241221-net-mptcp-netlink-specs-pm-doc-fixes-v2-2-e54f2db3f844@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-27netlink: specs: mptcp: add missing 'server-side' attrMatthieu Baerts (NGI0)
This attribute is added with the 'created' and 'established' events, but the documentation didn't mention it. The documentation in the UAPI header has been auto-generated by: ./tools/net/ynl/ynl-regen.sh Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20241221-net-mptcp-netlink-specs-pm-doc-fixes-v2-1-e54f2db3f844@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-27Merge tag 'hardening-v6.13-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fix from Kees Cook: - stddef: make __struct_group() UAPI C++-friendly (Alexander Lobakin) * tag 'hardening-v6.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: stddef: make __struct_group() UAPI C++-friendly
2024-12-23io_uring: introduce attributes for read/write and PI supportAnuj Gupta
Add the ability to pass additional attributes along with read/write. Application can prepare attibute specific information and pass its address using the SQE field: __u64 attr_ptr; Along with setting a mask indicating attributes being passed: __u64 attr_type_mask; Overall 64 attributes are allowed and currently one attribute 'IORING_RW_ATTR_FLAG_PI' is supported. With PI attribute, userspace can pass following information: - flags: integrity check flags IO_INTEGRITY_CHK_{GUARD/APPTAG/REFTAG} - len: length of PI/metadata buffer - addr: address of metadata buffer - seed: seed value for reftag remapping - app_tag: application defined 16b value Process this information to prepare uio_meta_descriptor and pass it down using kiocb->private. PI attribute is supported only for direct IO. Signed-off-by: Anuj Gupta <anuj20.g@samsung.com> Signed-off-by: Kanchan Joshi <joshi.k@samsung.com> Link: https://lore.kernel.org/r/20241128112240.8867-7-anuj20.g@samsung.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-12-23fs, iov_iter: define meta io descriptorAnuj Gupta
Add flags to describe checks for integrity meta buffer. Also, introduce a new 'uio_meta' structure that upper layer can use to pass the meta/integrity information. Signed-off-by: Kanchan Joshi <joshi.k@samsung.com> Signed-off-by: Anuj Gupta <anuj20.g@samsung.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20241128112240.8867-5-anuj20.g@samsung.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-12-22fiemap: use kernel-doc includes in fiemap docbookRandy Dunlap
Add some kernel-doc notation to structs in fiemap header files then pull that into Documentation/filesystems/fiemap.rst instead of duplicating the header file structs in fiemap.rst. This helps to future-proof fiemap.rst against struct changes. Add missing flags documentation from header files into fiemap.rst for FIEMAP_FLAG_CACHE and FIEMAP_EXTENT_SHARED. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20241121011352.201907-1-rdunlap@infradead.org Cc: Christoph Hellwig <hch@lst.de> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Christian Brauner <brauner@kernel.org> Cc: Jan Kara <jack@suse.cz> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2024-12-20stddef: make __struct_group() UAPI C++-friendlyAlexander Lobakin
For the most part of the C++ history, it couldn't have type declarations inside anonymous unions for different reasons. At the same time, __struct_group() relies on the latters, so when the @TAG argument is not empty, C++ code doesn't want to build (even under `extern "C"`): ../linux/include/uapi/linux/pkt_cls.h:25:24: error: 'struct tc_u32_sel::<unnamed union>::tc_u32_sel_hdr,' invalid; an anonymous union may only have public non-static data members [-fpermissive] The safest way to fix this without trying to switch standards (which is impossible in UAPI anyway) etc., is to disable tag declaration for that language. This won't break anything since for now it's not buildable at all. Use a separate definition for __struct_group() when __cplusplus is defined to mitigate the error, including the version from tools/. Fixes: 50d7bd38c3aa ("stddef: Introduce struct_group() helper macro") Reported-by: Christopher Ferris <cferris@google.com> Closes: https://lore.kernel.org/linux-hardening/Z1HZpe3WE5As8UAz@google.com Suggested-by: Kees Cook <kees@kernel.org> # __struct_group_tag() Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20241219135734.2130002-1-aleksander.lobakin@intel.com Signed-off-by: Kees Cook <kees@kernel.org>
2024-12-19ipv6: Add flow label to route get requestsIdo Schimmel
The default IPv6 multipath hash policy takes the flow label into account when calculating a multipath hash and previous patches added a flow label selector to IPv6 FIB rules. Allow user space to specify a flow label in route get requests by adding a new netlink attribute and using its value to populate the "flowlabel" field in the IPv6 flow info structure prior to a route lookup. Deny the attribute in RTM_{NEW,DEL}ROUTE requests by checking for it in rtm_to_fib6_config() and returning an error if present. A subsequent patch will use this capability to test the new flow label selector in IPv6 FIB rules. Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Guillaume Nault <gnault@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-12-19net: fib_rules: Add flow label selector attributesIdo Schimmel
Add new FIB rule attributes which will allow user space to match on the IPv6 flow label with a mask. Temporarily set the type of the attributes to 'NLA_REJECT' while support is being added in the IPv6 code. Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Guillaume Nault <gnault@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-12-16thermal/thresholds: Fix uapi header macros leading to a compilation errorDaniel Lezcano
The macros giving the direction of the crossing thresholds use the BIT macro which is not exported to the userspace. Consequently when an userspace program includes the header, it fails to compile. Replace the macros by their litteral to allow the compilation of userspace program using this header. Fixes: 445936f9e258 ("thermal: core: Add user thresholds support") Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://patch.msgid.link/20241212201311.4143196-1-daniel.lezcano@linaro.org [ rjw: Add Fixes: ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-12-16net: ethtool: Add support for tsconfig command to get/set hwtstamp configKory Maincent
Introduce support for ETHTOOL_MSG_TSCONFIG_GET/SET ethtool netlink socket to read and configure hwtstamp configuration of a PHC provider. Note that simultaneous hwtstamp isn't supported; configuring a new one disables the previous setting. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-12-16net: ethtool: tsinfo: Enhance tsinfo to support several hwtstamp by net topologyKory Maincent
Either the MAC or the PHY can provide hwtstamp, so we should be able to read the tsinfo for any hwtstamp provider. Enhance 'get' command to retrieve tsinfo of hwtstamp providers within a network topology. Add support for a specific dump command to retrieve all hwtstamp providers within the network topology, with added functionality for filtered dump to target a single interface. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-12-16net: Add the possibility to support a selected hwtstamp in netdeviceKory Maincent
Introduce the description of a hwtstamp provider, mainly defined with a the hwtstamp source and the phydev pointer. Add a hwtstamp provider description within the netdev structure to allow saving the hwtstamp we want to use. This prepares for future support of an ethtool netlink command to select the desired hwtstamp provider. By default, the old API that does not support hwtstamp selectability is used, meaning the hwtstamp provider pointer is unset. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-12-16tls: add counters for rekeySabrina Dubroca
This introduces 5 counters to keep track of key updates: Tls{Rx,Tx}Rekey{Ok,Error} and TlsRxRekeyReceived. Suggested-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-12-15netlink: add IGMP/MLD join/leave notificationsYuyang Huang
This change introduces netlink notifications for multicast address changes. The following features are included: * Addition and deletion of multicast addresses are reported using RTM_NEWMULTICAST and RTM_DELMULTICAST messages with AF_INET and AF_INET6. * Two new notification groups: RTNLGRP_IPV4_MCADDR and RTNLGRP_IPV6_MCADDR are introduced for receiving these events. This change allows user space applications (e.g., ip monitor) to efficiently track multicast group memberships by listening for netlink events. Previously, applications relied on inefficient polling of procfs, introducing delays. With netlink notifications, applications receive realtime updates on multicast group membership changes, enabling more precise metrics collection and system monitoring.  This change also unlocks the potential for implementing a wide range of sophisticated multicast related features in user space by allowing applications to combine kernel provided multicast address information with user space data and communicate decisions back to the kernel for more fine grained control. This mechanism can be used for various purposes, including multicast filtering, IGMP/MLD offload, and IGMP/MLD snooping. Cc: Maciej Żenczykowski <maze@google.com> Cc: Lorenzo Colitti <lorenzo@google.com> Co-developed-by: Patrick Ruddy <pruddy@vyatta.att-mail.com> Signed-off-by: Patrick Ruddy <pruddy@vyatta.att-mail.com> Link: https://lore.kernel.org/r/20180906091056.21109-1-pruddy@vyatta.att-mail.com Signed-off-by: Yuyang Huang <yuyanghuang@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-12-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.13-rc3). No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-09vxlan: Add an attribute to make VXLAN header validation configurablePetr Machata
The set of bits that the VXLAN netdevice currently considers reserved is defined by the features enabled at the netdevice construction. In order to make this configurable, add an attribute, IFLA_VXLAN_RESERVED_BITS. The payload is a pair of big-endian u32's covering the VXLAN header. This is validated against the set of flags used by the various enabled VXLAN features, and attempts to override bits used by an enabled feature are bounced. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/c657275e5ceed301e62c69fe8e559e32909442e2.1733412063.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-05ethtool: regenerate uapi header from the specStanislav Fomichev
No functional changes. Mostly the following formatting: - extra docs - extra enums - XXX_MAX = __XXX_CNT - 1 -> XXX_MAX = (__XXX_CNT - 1) - newlines Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241204155549.641348-9-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-05ethtool: remove the comments that are not gonna be generatedStanislav Fomichev
Cleanup the header manually to make it easier to review the changes that ynl generator brings in. No functional changes. Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241204155549.641348-8-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-05ethtool: separate definitions that are gonna be generatedStanislav Fomichev
Reshuffle definitions that are gonna be generated into ethtool_netlink_generated.h and match ynl spec order. This should make it easier to compare the output of the ynl-gen-c to the existing uapi header. No functional changes. Things that are still remaining to be manually defined: - ETHTOOL_FLAG_ALL - probably no good way to add to spec? - some of the cable test bits (not sure whether it's possible to move to spec) - some of the stats definitions (no way currently to move to spec) Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241204155549.641348-7-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-05xfrm: add generic iptfs defines and functionalityChristian Hopps
Define `XFRM_MODE_IPTFS` and `IPSEC_MODE_IPTFS` constants, and add these to switch case and conditionals adjacent with the existing TUNNEL modes. Signed-off-by: Christian Hopps <chopps@labn.net> Tested-by: Antony Antony <antony.antony@secunet.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2024-12-05xfrm: netlink: add config (netlink) optionsChristian Hopps
Add netlink options for configuring IP-TFS SAs. Signed-off-by: Christian Hopps <chopps@labn.net> Tested-by: Antony Antony <antony.antony@secunet.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>