Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

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().
  ...

1 files changed, 245 insertions, 0 deletions

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 <linux/buffer_head.h>
+
+typedef __u16 __bitwise __fs16;
+typedef __u32 __bitwise __fs32;
+
+#include <linux/sysv_fs.h>
+
+/*
+ * 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 */