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/internal.h | 266 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 266 insertions(+) create mode 100644 fs/internal.h (limited to 'fs/internal.h') diff --git a/fs/internal.h b/fs/internal.h new file mode 100644 index 000000000..dc4eb91a5 --- /dev/null +++ b/fs/internal.h @@ -0,0 +1,266 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* fs/ internal definitions + * + * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + */ + +struct super_block; +struct file_system_type; +struct iomap; +struct iomap_ops; +struct linux_binprm; +struct path; +struct mount; +struct shrink_control; +struct fs_context; +struct pipe_inode_info; +struct iov_iter; +struct mnt_idmap; + +/* + * block/bdev.c + */ +#ifdef CONFIG_BLOCK +extern void __init bdev_cache_init(void); + +void emergency_thaw_bdev(struct super_block *sb); +#else +static inline void bdev_cache_init(void) +{ +} +static inline int emergency_thaw_bdev(struct super_block *sb) +{ + return 0; +} +#endif /* CONFIG_BLOCK */ + +/* + * buffer.c + */ +int __block_write_begin_int(struct folio *folio, loff_t pos, unsigned len, + get_block_t *get_block, const struct iomap *iomap); + +/* + * char_dev.c + */ +extern void __init chrdev_init(void); + +/* + * fs_context.c + */ +extern const struct fs_context_operations legacy_fs_context_ops; +extern int parse_monolithic_mount_data(struct fs_context *, void *); +extern void vfs_clean_context(struct fs_context *fc); +extern int finish_clean_context(struct fs_context *fc); + +/* + * namei.c + */ +extern int filename_lookup(int dfd, struct filename *name, unsigned flags, + struct path *path, struct path *root); +extern int vfs_path_lookup(struct dentry *, struct vfsmount *, + const char *, unsigned int, struct path *); +int do_rmdir(int dfd, struct filename *name); +int do_unlinkat(int dfd, struct filename *name); +int may_linkat(struct mnt_idmap *idmap, const struct path *link); +int do_renameat2(int olddfd, struct filename *oldname, int newdfd, + struct filename *newname, unsigned int flags); +int do_mkdirat(int dfd, struct filename *name, umode_t mode); +int do_symlinkat(struct filename *from, int newdfd, struct filename *to); +int do_linkat(int olddfd, struct filename *old, int newdfd, + struct filename *new, int flags); + +/* + * namespace.c + */ +extern struct vfsmount *lookup_mnt(const struct path *); +extern int finish_automount(struct vfsmount *, const struct path *); + +extern int sb_prepare_remount_readonly(struct super_block *); + +extern void __init mnt_init(void); + +extern int __mnt_want_write_file(struct file *); +extern void __mnt_drop_write_file(struct file *); + +extern void dissolve_on_fput(struct vfsmount *); +extern bool may_mount(void); + +int path_mount(const char *dev_name, struct path *path, + const char *type_page, unsigned long flags, void *data_page); +int path_umount(struct path *path, int flags); + +/* + * fs_struct.c + */ +extern void chroot_fs_refs(const struct path *, const struct path *); + +/* + * file_table.c + */ +extern struct file *alloc_empty_file(int, const struct cred *); +extern struct file *alloc_empty_file_noaccount(int, const struct cred *); + +static inline void put_file_access(struct file *file) +{ + if ((file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) { + i_readcount_dec(file->f_inode); + } else if (file->f_mode & FMODE_WRITER) { + put_write_access(file->f_inode); + __mnt_drop_write(file->f_path.mnt); + } +} + +/* + * super.c + */ +extern int reconfigure_super(struct fs_context *); +extern bool trylock_super(struct super_block *sb); +struct super_block *user_get_super(dev_t, bool excl); +void put_super(struct super_block *sb); +extern bool mount_capable(struct fs_context *); +int sb_init_dio_done_wq(struct super_block *sb); + +/* + * open.c + */ +struct open_flags { + int open_flag; + umode_t mode; + int acc_mode; + int intent; + int lookup_flags; +}; +extern struct file *do_filp_open(int dfd, struct filename *pathname, + const struct open_flags *op); +extern struct file *do_file_open_root(const struct path *, + const char *, const struct open_flags *); +extern struct open_how build_open_how(int flags, umode_t mode); +extern int build_open_flags(const struct open_how *how, struct open_flags *op); +extern struct file *__close_fd_get_file(unsigned int fd); + +long do_sys_ftruncate(unsigned int fd, loff_t length, int small); +int chmod_common(const struct path *path, umode_t mode); +int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group, + int flag); +int chown_common(const struct path *path, uid_t user, gid_t group); +extern int vfs_open(const struct path *, struct file *); + +/* + * inode.c + */ +extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc); +int dentry_needs_remove_privs(struct mnt_idmap *, struct dentry *dentry); +bool in_group_or_capable(struct mnt_idmap *idmap, + const struct inode *inode, vfsgid_t vfsgid); + +/* + * fs-writeback.c + */ +extern long get_nr_dirty_inodes(void); +extern int invalidate_inodes(struct super_block *, bool); + +/* + * dcache.c + */ +extern int d_set_mounted(struct dentry *dentry); +extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc); +extern struct dentry *d_alloc_cursor(struct dentry *); +extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *); +extern char *simple_dname(struct dentry *, char *, int); +extern void dput_to_list(struct dentry *, struct list_head *); +extern void shrink_dentry_list(struct list_head *); + +/* + * pipe.c + */ +extern const struct file_operations pipefifo_fops; + +/* + * fs_pin.c + */ +extern void group_pin_kill(struct hlist_head *p); +extern void mnt_pin_kill(struct mount *m); + +/* + * fs/nsfs.c + */ +extern const struct dentry_operations ns_dentry_operations; + +/* + * fs/stat.c: + */ + +int getname_statx_lookup_flags(int flags); +int do_statx(int dfd, struct filename *filename, unsigned int flags, + unsigned int mask, struct statx __user *buffer); + +/* + * fs/splice.c: + */ +long splice_file_to_pipe(struct file *in, + struct pipe_inode_info *opipe, + loff_t *offset, + size_t len, unsigned int flags); + +/* + * fs/xattr.c: + */ +struct xattr_name { + char name[XATTR_NAME_MAX + 1]; +}; + +struct xattr_ctx { + /* Value of attribute */ + union { + const void __user *cvalue; + void __user *value; + }; + void *kvalue; + size_t size; + /* Attribute name */ + struct xattr_name *kname; + unsigned int flags; +}; + + +ssize_t do_getxattr(struct mnt_idmap *idmap, + struct dentry *d, + struct xattr_ctx *ctx); + +int setxattr_copy(const char __user *name, struct xattr_ctx *ctx); +int do_setxattr(struct mnt_idmap *idmap, struct dentry *dentry, + struct xattr_ctx *ctx); +int may_write_xattr(struct mnt_idmap *idmap, struct inode *inode); + +#ifdef CONFIG_FS_POSIX_ACL +int do_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, + const char *acl_name, const void *kvalue, size_t size); +ssize_t do_get_acl(struct mnt_idmap *idmap, struct dentry *dentry, + const char *acl_name, void *kvalue, size_t size); +#else +static inline int do_set_acl(struct mnt_idmap *idmap, + struct dentry *dentry, const char *acl_name, + const void *kvalue, size_t size) +{ + return -EOPNOTSUPP; +} +static inline ssize_t do_get_acl(struct mnt_idmap *idmap, + struct dentry *dentry, const char *acl_name, + void *kvalue, size_t size) +{ + return -EOPNOTSUPP; +} +#endif + +ssize_t __kernel_write_iter(struct file *file, struct iov_iter *from, loff_t *pos); + +/* + * fs/attr.c + */ +int setattr_should_drop_sgid(struct mnt_idmap *idmap, + const struct inode *inode); +struct mnt_idmap *alloc_mnt_idmap(struct user_namespace *mnt_userns); +struct mnt_idmap *mnt_idmap_get(struct mnt_idmap *idmap); +void mnt_idmap_put(struct mnt_idmap *idmap); -- cgit v1.2.3