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/sysv/sysv.h | 245 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 245 insertions(+) create mode 100644 fs/sysv/sysv.h (limited to 'fs/sysv/sysv.h') diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h new file mode 100644 index 000000000..5e122a567 --- /dev/null +++ b/fs/sysv/sysv.h @@ -0,0 +1,245 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _SYSV_H +#define _SYSV_H + +#include + +typedef __u16 __bitwise __fs16; +typedef __u32 __bitwise __fs32; + +#include + +/* + * SystemV/V7/Coherent super-block data in memory + * + * The SystemV/V7/Coherent superblock contains dynamic data (it gets modified + * while the system is running). This is in contrast to the Minix and Berkeley + * filesystems (where the superblock is never modified). This affects the + * sync() operation: we must keep the superblock in a disk buffer and use this + * one as our "working copy". + */ + +struct sysv_sb_info { + struct super_block *s_sb; /* VFS superblock */ + int s_type; /* file system type: FSTYPE_{XENIX|SYSV|COH} */ + char s_bytesex; /* bytesex (le/be/pdp) */ + unsigned int s_inodes_per_block; /* number of inodes per block */ + unsigned int s_inodes_per_block_1; /* inodes_per_block - 1 */ + unsigned int s_inodes_per_block_bits; /* log2(inodes_per_block) */ + unsigned int s_ind_per_block; /* number of indirections per block */ + unsigned int s_ind_per_block_bits; /* log2(ind_per_block) */ + unsigned int s_ind_per_block_2; /* ind_per_block ^ 2 */ + unsigned int s_toobig_block; /* 10 + ipb + ipb^2 + ipb^3 */ + unsigned int s_block_base; /* physical block number of block 0 */ + unsigned short s_fic_size; /* free inode cache size, NICINOD */ + unsigned short s_flc_size; /* free block list chunk size, NICFREE */ + /* The superblock is kept in one or two disk buffers: */ + struct buffer_head *s_bh1; + struct buffer_head *s_bh2; + /* These are pointers into the disk buffer, to compensate for + different superblock layout. */ + char * s_sbd1; /* entire superblock data, for part 1 */ + char * s_sbd2; /* entire superblock data, for part 2 */ + __fs16 *s_sb_fic_count; /* pointer to s_sbd->s_ninode */ + sysv_ino_t *s_sb_fic_inodes; /* pointer to s_sbd->s_inode */ + __fs16 *s_sb_total_free_inodes; /* pointer to s_sbd->s_tinode */ + __fs16 *s_bcache_count; /* pointer to s_sbd->s_nfree */ + sysv_zone_t *s_bcache; /* pointer to s_sbd->s_free */ + __fs32 *s_free_blocks; /* pointer to s_sbd->s_tfree */ + __fs32 *s_sb_time; /* pointer to s_sbd->s_time */ + __fs32 *s_sb_state; /* pointer to s_sbd->s_state, only FSTYPE_SYSV */ + /* We keep those superblock entities that don't change here; + this saves us an indirection and perhaps a conversion. */ + u32 s_firstinodezone; /* index of first inode zone */ + u32 s_firstdatazone; /* same as s_sbd->s_isize */ + u32 s_ninodes; /* total number of inodes */ + u32 s_ndatazones; /* total number of data zones */ + u32 s_nzones; /* same as s_sbd->s_fsize */ + u16 s_namelen; /* max length of dir entry */ + int s_forced_ro; + struct mutex s_lock; +}; + +/* + * SystemV/V7/Coherent FS inode data in memory + */ +struct sysv_inode_info { + __fs32 i_data[13]; + u32 i_dir_start_lookup; + struct inode vfs_inode; +}; + + +static inline struct sysv_inode_info *SYSV_I(struct inode *inode) +{ + return container_of(inode, struct sysv_inode_info, vfs_inode); +} + +static inline struct sysv_sb_info *SYSV_SB(struct super_block *sb) +{ + return sb->s_fs_info; +} + + +/* identify the FS in memory */ +enum { + FSTYPE_NONE = 0, + FSTYPE_XENIX, + FSTYPE_SYSV4, + FSTYPE_SYSV2, + FSTYPE_COH, + FSTYPE_V7, + FSTYPE_AFS, + FSTYPE_END, +}; + +#define SYSV_MAGIC_BASE 0x012FF7B3 + +#define XENIX_SUPER_MAGIC (SYSV_MAGIC_BASE+FSTYPE_XENIX) +#define SYSV4_SUPER_MAGIC (SYSV_MAGIC_BASE+FSTYPE_SYSV4) +#define SYSV2_SUPER_MAGIC (SYSV_MAGIC_BASE+FSTYPE_SYSV2) +#define COH_SUPER_MAGIC (SYSV_MAGIC_BASE+FSTYPE_COH) + + +/* Admissible values for i_nlink: 0.._LINK_MAX */ +enum { + XENIX_LINK_MAX = 126, /* ?? */ + SYSV_LINK_MAX = 126, /* 127? 251? */ + V7_LINK_MAX = 126, /* ?? */ + COH_LINK_MAX = 10000, +}; + + +static inline void dirty_sb(struct super_block *sb) +{ + struct sysv_sb_info *sbi = SYSV_SB(sb); + + mark_buffer_dirty(sbi->s_bh1); + if (sbi->s_bh1 != sbi->s_bh2) + mark_buffer_dirty(sbi->s_bh2); +} + + +/* ialloc.c */ +extern struct sysv_inode *sysv_raw_inode(struct super_block *, unsigned, + struct buffer_head **); +extern struct inode * sysv_new_inode(const struct inode *, umode_t); +extern void sysv_free_inode(struct inode *); +extern unsigned long sysv_count_free_inodes(struct super_block *); + +/* balloc.c */ +extern sysv_zone_t sysv_new_block(struct super_block *); +extern void sysv_free_block(struct super_block *, sysv_zone_t); +extern unsigned long sysv_count_free_blocks(struct super_block *); + +/* itree.c */ +extern void sysv_truncate(struct inode *); +extern int sysv_prepare_chunk(struct page *page, loff_t pos, unsigned len); + +/* inode.c */ +extern struct inode *sysv_iget(struct super_block *, unsigned int); +extern int sysv_write_inode(struct inode *, struct writeback_control *wbc); +extern int sysv_sync_inode(struct inode *); +extern void sysv_set_inode(struct inode *, dev_t); +extern int sysv_getattr(struct mnt_idmap *, const struct path *, + struct kstat *, u32, unsigned int); +extern int sysv_init_icache(void); +extern void sysv_destroy_icache(void); + + +/* dir.c */ +extern struct sysv_dir_entry *sysv_find_entry(struct dentry *, struct page **); +extern int sysv_add_link(struct dentry *, struct inode *); +extern int sysv_delete_entry(struct sysv_dir_entry *, struct page *); +extern int sysv_make_empty(struct inode *, struct inode *); +extern int sysv_empty_dir(struct inode *); +extern void sysv_set_link(struct sysv_dir_entry *, struct page *, + struct inode *); +extern struct sysv_dir_entry *sysv_dotdot(struct inode *, struct page **); +extern ino_t sysv_inode_by_name(struct dentry *); + + +extern const struct inode_operations sysv_file_inode_operations; +extern const struct inode_operations sysv_dir_inode_operations; +extern const struct file_operations sysv_file_operations; +extern const struct file_operations sysv_dir_operations; +extern const struct address_space_operations sysv_aops; +extern const struct super_operations sysv_sops; + + +enum { + BYTESEX_LE, + BYTESEX_PDP, + BYTESEX_BE, +}; + +static inline u32 PDP_swab(u32 x) +{ +#ifdef __LITTLE_ENDIAN + return ((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16); +#else +#ifdef __BIG_ENDIAN + return ((x & 0xff00ff) << 8) | ((x & 0xff00ff00) >> 8); +#else +#error BYTESEX +#endif +#endif +} + +static inline __u32 fs32_to_cpu(struct sysv_sb_info *sbi, __fs32 n) +{ + if (sbi->s_bytesex == BYTESEX_PDP) + return PDP_swab((__force __u32)n); + else if (sbi->s_bytesex == BYTESEX_LE) + return le32_to_cpu((__force __le32)n); + else + return be32_to_cpu((__force __be32)n); +} + +static inline __fs32 cpu_to_fs32(struct sysv_sb_info *sbi, __u32 n) +{ + if (sbi->s_bytesex == BYTESEX_PDP) + return (__force __fs32)PDP_swab(n); + else if (sbi->s_bytesex == BYTESEX_LE) + return (__force __fs32)cpu_to_le32(n); + else + return (__force __fs32)cpu_to_be32(n); +} + +static inline __fs32 fs32_add(struct sysv_sb_info *sbi, __fs32 *n, int d) +{ + if (sbi->s_bytesex == BYTESEX_PDP) + *(__u32*)n = PDP_swab(PDP_swab(*(__u32*)n)+d); + else if (sbi->s_bytesex == BYTESEX_LE) + le32_add_cpu((__le32 *)n, d); + else + be32_add_cpu((__be32 *)n, d); + return *n; +} + +static inline __u16 fs16_to_cpu(struct sysv_sb_info *sbi, __fs16 n) +{ + if (sbi->s_bytesex != BYTESEX_BE) + return le16_to_cpu((__force __le16)n); + else + return be16_to_cpu((__force __be16)n); +} + +static inline __fs16 cpu_to_fs16(struct sysv_sb_info *sbi, __u16 n) +{ + if (sbi->s_bytesex != BYTESEX_BE) + return (__force __fs16)cpu_to_le16(n); + else + return (__force __fs16)cpu_to_be16(n); +} + +static inline __fs16 fs16_add(struct sysv_sb_info *sbi, __fs16 *n, int d) +{ + if (sbi->s_bytesex != BYTESEX_BE) + le16_add_cpu((__le16 *)n, d); + else + be16_add_cpu((__be16 *)n, d); + return *n; +} + +#endif /* _SYSV_H */ -- cgit v1.2.3