From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- fs/xfs/scrub/rmap.c | 235 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 235 insertions(+) create mode 100644 fs/xfs/scrub/rmap.c (limited to 'fs/xfs/scrub/rmap.c') diff --git a/fs/xfs/scrub/rmap.c b/fs/xfs/scrub/rmap.c new file mode 100644 index 000000000..229826b2e --- /dev/null +++ b/fs/xfs/scrub/rmap.c @@ -0,0 +1,235 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2017 Oracle. All Rights Reserved. + * Author: Darrick J. Wong + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_shared.h" +#include "xfs_format.h" +#include "xfs_trans_resv.h" +#include "xfs_mount.h" +#include "xfs_btree.h" +#include "xfs_rmap.h" +#include "xfs_refcount.h" +#include "scrub/scrub.h" +#include "scrub/common.h" +#include "scrub/btree.h" +#include "xfs_ag.h" + +/* + * Set us up to scrub reverse mapping btrees. + */ +int +xchk_setup_ag_rmapbt( + struct xfs_scrub *sc) +{ + return xchk_setup_ag_btree(sc, false); +} + +/* Reverse-mapping scrubber. */ + +/* Cross-reference a rmap against the refcount btree. */ +STATIC void +xchk_rmapbt_xref_refc( + struct xfs_scrub *sc, + struct xfs_rmap_irec *irec) +{ + xfs_agblock_t fbno; + xfs_extlen_t flen; + bool non_inode; + bool is_bmbt; + bool is_attr; + bool is_unwritten; + int error; + + if (!sc->sa.refc_cur || xchk_skip_xref(sc->sm)) + return; + + non_inode = XFS_RMAP_NON_INODE_OWNER(irec->rm_owner); + is_bmbt = irec->rm_flags & XFS_RMAP_BMBT_BLOCK; + is_attr = irec->rm_flags & XFS_RMAP_ATTR_FORK; + is_unwritten = irec->rm_flags & XFS_RMAP_UNWRITTEN; + + /* If this is shared, must be a data fork extent. */ + error = xfs_refcount_find_shared(sc->sa.refc_cur, irec->rm_startblock, + irec->rm_blockcount, &fbno, &flen, false); + if (!xchk_should_check_xref(sc, &error, &sc->sa.refc_cur)) + return; + if (flen != 0 && (non_inode || is_attr || is_bmbt || is_unwritten)) + xchk_btree_xref_set_corrupt(sc, sc->sa.refc_cur, 0); +} + +/* Cross-reference with the other btrees. */ +STATIC void +xchk_rmapbt_xref( + struct xfs_scrub *sc, + struct xfs_rmap_irec *irec) +{ + xfs_agblock_t agbno = irec->rm_startblock; + xfs_extlen_t len = irec->rm_blockcount; + + if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT) + return; + + xchk_xref_is_used_space(sc, agbno, len); + if (irec->rm_owner == XFS_RMAP_OWN_INODES) + xchk_xref_is_inode_chunk(sc, agbno, len); + else + xchk_xref_is_not_inode_chunk(sc, agbno, len); + if (irec->rm_owner == XFS_RMAP_OWN_COW) + xchk_xref_is_cow_staging(sc, irec->rm_startblock, + irec->rm_blockcount); + else + xchk_rmapbt_xref_refc(sc, irec); +} + +/* Scrub an rmapbt record. */ +STATIC int +xchk_rmapbt_rec( + struct xchk_btree *bs, + const union xfs_btree_rec *rec) +{ + struct xfs_mount *mp = bs->cur->bc_mp; + struct xfs_rmap_irec irec; + struct xfs_perag *pag = bs->cur->bc_ag.pag; + bool non_inode; + bool is_unwritten; + bool is_bmbt; + bool is_attr; + int error; + + error = xfs_rmap_btrec_to_irec(rec, &irec); + if (!xchk_btree_process_error(bs->sc, bs->cur, 0, &error)) + goto out; + + /* Check extent. */ + if (irec.rm_startblock + irec.rm_blockcount <= irec.rm_startblock) + xchk_btree_set_corrupt(bs->sc, bs->cur, 0); + + if (irec.rm_owner == XFS_RMAP_OWN_FS) { + /* + * xfs_verify_agbno returns false for static fs metadata. + * Since that only exists at the start of the AG, validate + * that by hand. + */ + if (irec.rm_startblock != 0 || + irec.rm_blockcount != XFS_AGFL_BLOCK(mp) + 1) + xchk_btree_set_corrupt(bs->sc, bs->cur, 0); + } else { + /* + * Otherwise we must point somewhere past the static metadata + * but before the end of the FS. Run the regular check. + */ + if (!xfs_verify_agbno(pag, irec.rm_startblock) || + !xfs_verify_agbno(pag, irec.rm_startblock + + irec.rm_blockcount - 1)) + xchk_btree_set_corrupt(bs->sc, bs->cur, 0); + } + + /* Check flags. */ + non_inode = XFS_RMAP_NON_INODE_OWNER(irec.rm_owner); + is_bmbt = irec.rm_flags & XFS_RMAP_BMBT_BLOCK; + is_attr = irec.rm_flags & XFS_RMAP_ATTR_FORK; + is_unwritten = irec.rm_flags & XFS_RMAP_UNWRITTEN; + + if (is_bmbt && irec.rm_offset != 0) + xchk_btree_set_corrupt(bs->sc, bs->cur, 0); + + if (non_inode && irec.rm_offset != 0) + xchk_btree_set_corrupt(bs->sc, bs->cur, 0); + + if (is_unwritten && (is_bmbt || non_inode || is_attr)) + xchk_btree_set_corrupt(bs->sc, bs->cur, 0); + + if (non_inode && (is_bmbt || is_unwritten || is_attr)) + xchk_btree_set_corrupt(bs->sc, bs->cur, 0); + + if (!non_inode) { + if (!xfs_verify_ino(mp, irec.rm_owner)) + xchk_btree_set_corrupt(bs->sc, bs->cur, 0); + } else { + /* Non-inode owner within the magic values? */ + if (irec.rm_owner <= XFS_RMAP_OWN_MIN || + irec.rm_owner > XFS_RMAP_OWN_FS) + xchk_btree_set_corrupt(bs->sc, bs->cur, 0); + } + + xchk_rmapbt_xref(bs->sc, &irec); +out: + return error; +} + +/* Scrub the rmap btree for some AG. */ +int +xchk_rmapbt( + struct xfs_scrub *sc) +{ + return xchk_btree(sc, sc->sa.rmap_cur, xchk_rmapbt_rec, + &XFS_RMAP_OINFO_AG, NULL); +} + +/* xref check that the extent is owned by a given owner */ +static inline void +xchk_xref_check_owner( + struct xfs_scrub *sc, + xfs_agblock_t bno, + xfs_extlen_t len, + const struct xfs_owner_info *oinfo, + bool should_have_rmap) +{ + bool has_rmap; + int error; + + if (!sc->sa.rmap_cur || xchk_skip_xref(sc->sm)) + return; + + error = xfs_rmap_record_exists(sc->sa.rmap_cur, bno, len, oinfo, + &has_rmap); + if (!xchk_should_check_xref(sc, &error, &sc->sa.rmap_cur)) + return; + if (has_rmap != should_have_rmap) + xchk_btree_xref_set_corrupt(sc, sc->sa.rmap_cur, 0); +} + +/* xref check that the extent is owned by a given owner */ +void +xchk_xref_is_owned_by( + struct xfs_scrub *sc, + xfs_agblock_t bno, + xfs_extlen_t len, + const struct xfs_owner_info *oinfo) +{ + xchk_xref_check_owner(sc, bno, len, oinfo, true); +} + +/* xref check that the extent is not owned by a given owner */ +void +xchk_xref_is_not_owned_by( + struct xfs_scrub *sc, + xfs_agblock_t bno, + xfs_extlen_t len, + const struct xfs_owner_info *oinfo) +{ + xchk_xref_check_owner(sc, bno, len, oinfo, false); +} + +/* xref check that the extent has no reverse mapping at all */ +void +xchk_xref_has_no_owner( + struct xfs_scrub *sc, + xfs_agblock_t bno, + xfs_extlen_t len) +{ + bool has_rmap; + int error; + + if (!sc->sa.rmap_cur || xchk_skip_xref(sc->sm)) + return; + + error = xfs_rmap_has_record(sc->sa.rmap_cur, bno, len, &has_rmap); + if (!xchk_should_check_xref(sc, &error, &sc->sa.rmap_cur)) + return; + if (has_rmap) + xchk_btree_xref_set_corrupt(sc, sc->sa.rmap_cur, 0); +} -- cgit v1.2.3