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/nfsd/vfs.h | 184 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 184 insertions(+) create mode 100644 fs/nfsd/vfs.h (limited to 'fs/nfsd/vfs.h') diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h new file mode 100644 index 000000000..43fb57a30 --- /dev/null +++ b/fs/nfsd/vfs.h @@ -0,0 +1,184 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 1995-1997 Olaf Kirch + */ + +#ifndef LINUX_NFSD_VFS_H +#define LINUX_NFSD_VFS_H + +#include +#include +#include "nfsfh.h" +#include "nfsd.h" + +/* + * Flags for nfsd_permission + */ +#define NFSD_MAY_NOP 0 +#define NFSD_MAY_EXEC 0x001 /* == MAY_EXEC */ +#define NFSD_MAY_WRITE 0x002 /* == MAY_WRITE */ +#define NFSD_MAY_READ 0x004 /* == MAY_READ */ +#define NFSD_MAY_SATTR 0x008 +#define NFSD_MAY_TRUNC 0x010 +#define NFSD_MAY_LOCK 0x020 +#define NFSD_MAY_MASK 0x03f + +/* extra hints to permission and open routines: */ +#define NFSD_MAY_OWNER_OVERRIDE 0x040 +#define NFSD_MAY_LOCAL_ACCESS 0x080 /* for device special files */ +#define NFSD_MAY_BYPASS_GSS_ON_ROOT 0x100 +#define NFSD_MAY_NOT_BREAK_LEASE 0x200 +#define NFSD_MAY_BYPASS_GSS 0x400 +#define NFSD_MAY_READ_IF_EXEC 0x800 + +#define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */ + +#define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE) +#define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC) + +struct nfsd_file; + +/* + * Callback function for readdir + */ +typedef int (*nfsd_filldir_t)(void *, const char *, int, loff_t, u64, unsigned); + +/* nfsd/vfs.c */ +struct nfsd_attrs { + struct iattr *na_iattr; /* input */ + struct xdr_netobj *na_seclabel; /* input */ + struct posix_acl *na_pacl; /* input */ + struct posix_acl *na_dpacl; /* input */ + + int na_labelerr; /* output */ + int na_aclerr; /* output */ +}; + +static inline void nfsd_attrs_free(struct nfsd_attrs *attrs) +{ + posix_acl_release(attrs->na_pacl); + posix_acl_release(attrs->na_dpacl); +} + +__be32 nfserrno (int errno); +int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp, + struct svc_export **expp); +__be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *, + const char *, unsigned int, struct svc_fh *); +__be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *, + const char *, unsigned int, + struct svc_export **, struct dentry **); +__be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *, + struct nfsd_attrs *, int, time64_t); +int nfsd_mountpoint(struct dentry *, struct svc_export *); +#ifdef CONFIG_NFSD_V4 +__be32 nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *, + struct file *, loff_t, loff_t, int); +__be32 nfsd4_clone_file_range(struct svc_rqst *rqstp, + struct nfsd_file *nf_src, u64 src_pos, + struct nfsd_file *nf_dst, u64 dst_pos, + u64 count, bool sync); +#endif /* CONFIG_NFSD_V4 */ +__be32 nfsd_create_locked(struct svc_rqst *, struct svc_fh *, + struct nfsd_attrs *attrs, int type, dev_t rdev, + struct svc_fh *res); +__be32 nfsd_create(struct svc_rqst *, struct svc_fh *, + char *name, int len, struct nfsd_attrs *attrs, + int type, dev_t rdev, struct svc_fh *res); +__be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *); +__be32 nfsd_create_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, + struct svc_fh *resfhp, struct nfsd_attrs *iap); +__be32 nfsd_commit(struct svc_rqst *rqst, struct svc_fh *fhp, + struct nfsd_file *nf, u64 offset, u32 count, + __be32 *verf); +#ifdef CONFIG_NFSD_V4 +__be32 nfsd_getxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, + char *name, void **bufp, int *lenp); +__be32 nfsd_listxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, + char **bufp, int *lenp); +__be32 nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp, + char *name); +__be32 nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, + char *name, void *buf, u32 len, u32 flags); +#endif +int nfsd_open_break_lease(struct inode *, int); +__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t, + int, struct file **); +__be32 nfsd_open_verified(struct svc_rqst *, struct svc_fh *, + int, struct file **); +__be32 nfsd_splice_read(struct svc_rqst *rqstp, struct svc_fh *fhp, + struct file *file, loff_t offset, + unsigned long *count, + u32 *eof); +__be32 nfsd_readv(struct svc_rqst *rqstp, struct svc_fh *fhp, + struct file *file, loff_t offset, + struct kvec *vec, int vlen, + unsigned long *count, + u32 *eof); +__be32 nfsd_read(struct svc_rqst *, struct svc_fh *, + loff_t, struct kvec *, int, unsigned long *, + u32 *eof); +__be32 nfsd_write(struct svc_rqst *, struct svc_fh *, loff_t, + struct kvec *, int, unsigned long *, + int stable, __be32 *verf); +__be32 nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, + struct nfsd_file *nf, loff_t offset, + struct kvec *vec, int vlen, unsigned long *cnt, + int stable, __be32 *verf); +__be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *, + char *, int *); +__be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *, + char *name, int len, char *path, + struct nfsd_attrs *attrs, + struct svc_fh *res); +__be32 nfsd_link(struct svc_rqst *, struct svc_fh *, + char *, int, struct svc_fh *); +ssize_t nfsd_copy_file_range(struct file *, u64, + struct file *, u64, u64); +__be32 nfsd_rename(struct svc_rqst *, + struct svc_fh *, char *, int, + struct svc_fh *, char *, int); +__be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type, + char *name, int len); +__be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *, + loff_t *, struct readdir_cd *, nfsd_filldir_t); +__be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *, + struct kstatfs *, int access); + +__be32 nfsd_permission(struct svc_rqst *, struct svc_export *, + struct dentry *, int); + +static inline int fh_want_write(struct svc_fh *fh) +{ + int ret; + + if (fh->fh_want_write) + return 0; + ret = mnt_want_write(fh->fh_export->ex_path.mnt); + if (!ret) + fh->fh_want_write = true; + return ret; +} + +static inline void fh_drop_write(struct svc_fh *fh) +{ + if (fh->fh_want_write) { + fh->fh_want_write = false; + mnt_drop_write(fh->fh_export->ex_path.mnt); + } +} + +static inline __be32 fh_getattr(const struct svc_fh *fh, struct kstat *stat) +{ + u32 request_mask = STATX_BASIC_STATS; + struct path p = {.mnt = fh->fh_export->ex_path.mnt, + .dentry = fh->fh_dentry}; + + if (fh->fh_maxsize == NFS4_FHSIZE) + request_mask |= (STATX_BTIME | STATX_CHANGE_COOKIE); + + return nfserrno(vfs_getattr(&p, stat, request_mask, + AT_STATX_SYNC_AS_STAT)); +} + +#endif /* LINUX_NFSD_VFS_H */ -- cgit v1.2.3