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, 235 insertions, 0 deletions

diff --git a/fs/sysv/ialloc.c b/fs/sysv/ialloc.c
new file mode 100644
index 000000000..e73287903
--- /dev/null
+++ b/fs/sysv/ialloc.c
@@ -0,0 +1,235 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *  linux/fs/sysv/ialloc.c
+ *
+ *  minix/bitmap.c
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *
+ *  ext/freelists.c
+ *  Copyright (C) 1992  Remy Card (card@masi.ibp.fr)
+ *
+ *  xenix/alloc.c
+ *  Copyright (C) 1992  Doug Evans
+ *
+ *  coh/alloc.c
+ *  Copyright (C) 1993  Pascal Haible, Bruno Haible
+ *
+ *  sysv/ialloc.c
+ *  Copyright (C) 1993  Bruno Haible
+ *
+ *  This file contains code for allocating/freeing inodes.
+ */
+
+#include <linux/kernel.h>
+#include <linux/stddef.h>
+#include <linux/sched.h>
+#include <linux/stat.h>
+#include <linux/string.h>
+#include <linux/buffer_head.h>
+#include <linux/writeback.h>
+#include "sysv.h"
+
+/* We don't trust the value of
+   sb->sv_sbd2->s_tinode = *sb->sv_sb_total_free_inodes
+   but we nevertheless keep it up to date. */
+
+/* An inode on disk is considered free if both i_mode == 0 and i_nlink == 0. */
+
+/* return &sb->sv_sb_fic_inodes[i] = &sbd->s_inode[i]; */
+static inline sysv_ino_t *
+sv_sb_fic_inode(struct super_block * sb, unsigned int i)
+{
+	struct sysv_sb_info *sbi = SYSV_SB(sb);
+
+	if (sbi->s_bh1 == sbi->s_bh2)
+		return &sbi->s_sb_fic_inodes[i];
+	else {
+		/* 512 byte Xenix FS */
+		unsigned int offset = offsetof(struct xenix_super_block, s_inode[i]);
+		if (offset < 512)
+			return (sysv_ino_t*)(sbi->s_sbd1 + offset);
+		else
+			return (sysv_ino_t*)(sbi->s_sbd2 + offset);
+	}
+}
+
+struct sysv_inode *
+sysv_raw_inode(struct super_block *sb, unsigned ino, struct buffer_head **bh)
+{
+	struct sysv_sb_info *sbi = SYSV_SB(sb);
+	struct sysv_inode *res;
+	int block = sbi->s_firstinodezone + sbi->s_block_base;
+
+	block += (ino-1) >> sbi->s_inodes_per_block_bits;
+	*bh = sb_bread(sb, block);
+	if (!*bh)
+		return NULL;
+	res = (struct sysv_inode *)(*bh)->b_data;
+	return res + ((ino-1) & sbi->s_inodes_per_block_1);
+}
+
+static int refill_free_cache(struct super_block *sb)
+{
+	struct sysv_sb_info *sbi = SYSV_SB(sb);
+	struct buffer_head * bh;
+	struct sysv_inode * raw_inode;
+	int i = 0, ino;
+
+	ino = SYSV_ROOT_INO+1;
+	raw_inode = sysv_raw_inode(sb, ino, &bh);
+	if (!raw_inode)
+		goto out;
+	while (ino <= sbi->s_ninodes) {
+		if (raw_inode->i_mode == 0 && raw_inode->i_nlink == 0) {
+			*sv_sb_fic_inode(sb,i++) = cpu_to_fs16(SYSV_SB(sb), ino);
+			if (i == sbi->s_fic_size)
+				break;
+		}
+		if ((ino++ & sbi->s_inodes_per_block_1) == 0) {
+			brelse(bh);
+			raw_inode = sysv_raw_inode(sb, ino, &bh);
+			if (!raw_inode)
+				goto out;
+		} else
+			raw_inode++;
+	}
+	brelse(bh);
+out:
+	return i;
+}
+
+void sysv_free_inode(struct inode * inode)
+{
+	struct super_block *sb = inode->i_sb;
+	struct sysv_sb_info *sbi = SYSV_SB(sb);
+	unsigned int ino;
+	struct buffer_head * bh;
+	struct sysv_inode * raw_inode;
+	unsigned count;
+
+	sb = inode->i_sb;
+	ino = inode->i_ino;
+	if (ino <= SYSV_ROOT_INO || ino > sbi->s_ninodes) {
+		printk("sysv_free_inode: inode 0,1,2 or nonexistent inode\n");
+		return;
+	}
+	raw_inode = sysv_raw_inode(sb, ino, &bh);
+	if (!raw_inode) {
+		printk("sysv_free_inode: unable to read inode block on device "
+		       "%s\n", inode->i_sb->s_id);
+		return;
+	}
+	mutex_lock(&sbi->s_lock);
+	count = fs16_to_cpu(sbi, *sbi->s_sb_fic_count);
+	if (count < sbi->s_fic_size) {
+		*sv_sb_fic_inode(sb,count++) = cpu_to_fs16(sbi, ino);
+		*sbi->s_sb_fic_count = cpu_to_fs16(sbi, count);
+	}
+	fs16_add(sbi, sbi->s_sb_total_free_inodes, 1);
+	dirty_sb(sb);
+	memset(raw_inode, 0, sizeof(struct sysv_inode));
+	mark_buffer_dirty(bh);
+	mutex_unlock(&sbi->s_lock);
+	brelse(bh);
+}
+
+struct inode * sysv_new_inode(const struct inode * dir, umode_t mode)
+{
+	struct super_block *sb = dir->i_sb;
+	struct sysv_sb_info *sbi = SYSV_SB(sb);
+	struct inode *inode;
+	sysv_ino_t ino;
+	unsigned count;
+	struct writeback_control wbc = {
+		.sync_mode = WB_SYNC_NONE
+	};
+
+	inode = new_inode(sb);
+	if (!inode)
+		return ERR_PTR(-ENOMEM);
+
+	mutex_lock(&sbi->s_lock);
+	count = fs16_to_cpu(sbi, *sbi->s_sb_fic_count);
+	if (count == 0 || (*sv_sb_fic_inode(sb,count-1) == 0)) {
+		count = refill_free_cache(sb);
+		if (count == 0) {
+			iput(inode);
+			mutex_unlock(&sbi->s_lock);
+			return ERR_PTR(-ENOSPC);
+		}
+	}
+	/* Now count > 0. */
+	ino = *sv_sb_fic_inode(sb,--count);
+	*sbi->s_sb_fic_count = cpu_to_fs16(sbi, count);
+	fs16_add(sbi, sbi->s_sb_total_free_inodes, -1);
+	dirty_sb(sb);
+	inode_init_owner(&nop_mnt_idmap, inode, dir, mode);
+	inode->i_ino = fs16_to_cpu(sbi, ino);
+	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+	inode->i_blocks = 0;
+	memset(SYSV_I(inode)->i_data, 0, sizeof(SYSV_I(inode)->i_data));
+	SYSV_I(inode)->i_dir_start_lookup = 0;
+	insert_inode_hash(inode);
+	mark_inode_dirty(inode);
+
+	sysv_write_inode(inode, &wbc);	/* ensure inode not allocated again */
+	mark_inode_dirty(inode);	/* cleared by sysv_write_inode() */
+	/* That's it. */
+	mutex_unlock(&sbi->s_lock);
+	return inode;
+}
+
+unsigned long sysv_count_free_inodes(struct super_block * sb)
+{
+	struct sysv_sb_info *sbi = SYSV_SB(sb);
+	struct buffer_head * bh;
+	struct sysv_inode * raw_inode;
+	int ino, count, sb_count;
+
+	mutex_lock(&sbi->s_lock);
+
+	sb_count = fs16_to_cpu(sbi, *sbi->s_sb_total_free_inodes);
+
+	if (0)
+		goto trust_sb;
+
+	/* this causes a lot of disk traffic ... */
+	count = 0;
+	ino = SYSV_ROOT_INO+1;
+	raw_inode = sysv_raw_inode(sb, ino, &bh);
+	if (!raw_inode)
+		goto Eio;
+	while (ino <= sbi->s_ninodes) {
+		if (raw_inode->i_mode == 0 && raw_inode->i_nlink == 0)
+			count++;
+		if ((ino++ & sbi->s_inodes_per_block_1) == 0) {
+			brelse(bh);
+			raw_inode = sysv_raw_inode(sb, ino, &bh);
+			if (!raw_inode)
+				goto Eio;
+		} else
+			raw_inode++;
+	}
+	brelse(bh);
+	if (count != sb_count)
+		goto Einval;
+out:
+	mutex_unlock(&sbi->s_lock);
+	return count;
+
+Einval:
+	printk("sysv_count_free_inodes: "
+		"free inode count was %d, correcting to %d\n",
+		sb_count, count);
+	if (!sb_rdonly(sb)) {
+		*sbi->s_sb_total_free_inodes = cpu_to_fs16(SYSV_SB(sb), count);
+		dirty_sb(sb);
+	}
+	goto out;
+
+Eio:
+	printk("sysv_count_free_inodes: unable to read inode table\n");
+trust_sb:
+	count = sb_count;
+	goto out;
+}