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, 329 insertions, 0 deletions

diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c
new file mode 100644
index 000000000..f32f15669
--- /dev/null
+++ b/fs/hpfs/dir.c
@@ -0,0 +1,329 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *  linux/fs/hpfs/dir.c
+ *
+ *  Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
+ *
+ *  directory VFS functions
+ */
+
+#include <linux/slab.h>
+#include "hpfs_fn.h"
+
+static int hpfs_dir_release(struct inode *inode, struct file *filp)
+{
+	hpfs_lock(inode->i_sb);
+	hpfs_del_pos(inode, &filp->f_pos);
+	/*hpfs_write_if_changed(inode);*/
+	hpfs_unlock(inode->i_sb);
+	return 0;
+}
+
+/* This is slow, but it's not used often */
+
+static loff_t hpfs_dir_lseek(struct file *filp, loff_t off, int whence)
+{
+	loff_t new_off = off + (whence == 1 ? filp->f_pos : 0);
+	loff_t pos;
+	struct quad_buffer_head qbh;
+	struct inode *i = file_inode(filp);
+	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
+	struct super_block *s = i->i_sb;
+
+	/* Somebody else will have to figure out what to do here */
+	if (whence == SEEK_DATA || whence == SEEK_HOLE)
+		return -EINVAL;
+
+	inode_lock(i);
+	hpfs_lock(s);
+
+	/*pr_info("dir lseek\n");*/
+	if (new_off == 0 || new_off == 1 || new_off == 11 || new_off == 12 || new_off == 13) goto ok;
+	pos = ((loff_t) hpfs_de_as_down_as_possible(s, hpfs_inode->i_dno) << 4) + 1;
+	while (pos != new_off) {
+		if (map_pos_dirent(i, &pos, &qbh)) hpfs_brelse4(&qbh);
+		else goto fail;
+		if (pos == 12) goto fail;
+	}
+	if (unlikely(hpfs_add_pos(i, &filp->f_pos) < 0)) {
+		hpfs_unlock(s);
+		inode_unlock(i);
+		return -ENOMEM;
+	}
+ok:
+	filp->f_pos = new_off;
+	hpfs_unlock(s);
+	inode_unlock(i);
+	return new_off;
+fail:
+	/*pr_warn("illegal lseek: %016llx\n", new_off);*/
+	hpfs_unlock(s);
+	inode_unlock(i);
+	return -ESPIPE;
+}
+
+static int hpfs_readdir(struct file *file, struct dir_context *ctx)
+{
+	struct inode *inode = file_inode(file);
+	struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
+	struct quad_buffer_head qbh;
+	struct hpfs_dirent *de;
+	int lc;
+	loff_t next_pos;
+	unsigned char *tempname;
+	int c1, c2 = 0;
+	int ret = 0;
+
+	hpfs_lock(inode->i_sb);
+
+	if (hpfs_sb(inode->i_sb)->sb_chk) {
+		if (hpfs_chk_sectors(inode->i_sb, inode->i_ino, 1, "dir_fnode")) {
+			ret = -EFSERROR;
+			goto out;
+		}
+		if (hpfs_chk_sectors(inode->i_sb, hpfs_inode->i_dno, 4, "dir_dnode")) {
+			ret = -EFSERROR;
+			goto out;
+		}
+	}
+	if (hpfs_sb(inode->i_sb)->sb_chk >= 2) {
+		struct buffer_head *bh;
+		struct fnode *fno;
+		int e = 0;
+		if (!(fno = hpfs_map_fnode(inode->i_sb, inode->i_ino, &bh))) {
+			ret = -EIOERROR;
+			goto out;
+		}
+		if (!fnode_is_dir(fno)) {
+			e = 1;
+			hpfs_error(inode->i_sb, "not a directory, fnode %08lx",
+					(unsigned long)inode->i_ino);
+		}
+		if (hpfs_inode->i_dno != le32_to_cpu(fno->u.external[0].disk_secno)) {
+			e = 1;
+			hpfs_error(inode->i_sb, "corrupted inode: i_dno == %08x, fnode -> dnode == %08x", hpfs_inode->i_dno, le32_to_cpu(fno->u.external[0].disk_secno));
+		}
+		brelse(bh);
+		if (e) {
+			ret = -EFSERROR;
+			goto out;
+		}
+	}
+	lc = hpfs_sb(inode->i_sb)->sb_lowercase;
+	if (ctx->pos == 12) { /* diff -r requires this (note, that diff -r */
+		ctx->pos = 13; /* also fails on msdos filesystem in 2.0) */
+		goto out;
+	}
+	if (ctx->pos == 13) {
+		ret = -ENOENT;
+		goto out;
+	}
+	
+	while (1) {
+		again:
+		/* This won't work when cycle is longer than number of dirents
+		   accepted by filldir, but what can I do?
+		   maybe killall -9 ls helps */
+		if (hpfs_sb(inode->i_sb)->sb_chk)
+			if (hpfs_stop_cycles(inode->i_sb, ctx->pos, &c1, &c2, "hpfs_readdir")) {
+				ret = -EFSERROR;
+				goto out;
+			}
+		if (ctx->pos == 12)
+			goto out;
+		if (ctx->pos == 3 || ctx->pos == 4 || ctx->pos == 5) {
+			pr_err("pos==%d\n", (int)ctx->pos);
+			goto out;
+		}
+		if (ctx->pos == 0) {
+			if (!dir_emit_dot(file, ctx))
+				goto out;
+			ctx->pos = 11;
+		}
+		if (ctx->pos == 11) {
+			if (!dir_emit(ctx, "..", 2, hpfs_inode->i_parent_dir, DT_DIR))
+				goto out;
+			ctx->pos = 1;
+		}
+		if (ctx->pos == 1) {
+			ret = hpfs_add_pos(inode, &file->f_pos);
+			if (unlikely(ret < 0))
+				goto out;
+			ctx->pos = ((loff_t) hpfs_de_as_down_as_possible(inode->i_sb, hpfs_inode->i_dno) << 4) + 1;
+		}
+		next_pos = ctx->pos;
+		if (!(de = map_pos_dirent(inode, &next_pos, &qbh))) {
+			ctx->pos = next_pos;
+			ret = -EIOERROR;
+			goto out;
+		}
+		if (de->first || de->last) {
+			if (hpfs_sb(inode->i_sb)->sb_chk) {
+				if (de->first && !de->last && (de->namelen != 2
+				    || de ->name[0] != 1 || de->name[1] != 1))
+					hpfs_error(inode->i_sb, "hpfs_readdir: bad ^A^A entry; pos = %08lx", (unsigned long)ctx->pos);
+				if (de->last && (de->namelen != 1 || de ->name[0] != 255))
+					hpfs_error(inode->i_sb, "hpfs_readdir: bad \\377 entry; pos = %08lx", (unsigned long)ctx->pos);
+			}
+			hpfs_brelse4(&qbh);
+			ctx->pos = next_pos;
+			goto again;
+		}
+		tempname = hpfs_translate_name(inode->i_sb, de->name, de->namelen, lc, de->not_8x3);
+		if (!dir_emit(ctx, tempname, de->namelen, le32_to_cpu(de->fnode), DT_UNKNOWN)) {
+			if (tempname != de->name) kfree(tempname);
+			hpfs_brelse4(&qbh);
+			goto out;
+		}
+		ctx->pos = next_pos;
+		if (tempname != de->name) kfree(tempname);
+		hpfs_brelse4(&qbh);
+	}
+out:
+	hpfs_unlock(inode->i_sb);
+	return ret;
+}
+
+/*
+ * lookup.  Search the specified directory for the specified name, set
+ * *result to the corresponding inode.
+ *
+ * lookup uses the inode number to tell read_inode whether it is reading
+ * the inode of a directory or a file -- file ino's are odd, directory
+ * ino's are even.  read_inode avoids i/o for file inodes; everything
+ * needed is up here in the directory.  (And file fnodes are out in
+ * the boondocks.)
+ *
+ *    - M.P.: this is over, sometimes we've got to read file's fnode for eas
+ *	      inode numbers are just fnode sector numbers; iget lock is used
+ *	      to tell read_inode to read fnode or not.
+ */
+
+struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
+{
+	const unsigned char *name = dentry->d_name.name;
+	unsigned len = dentry->d_name.len;
+	struct quad_buffer_head qbh;
+	struct hpfs_dirent *de;
+	ino_t ino;
+	int err;
+	struct inode *result = NULL;
+	struct hpfs_inode_info *hpfs_result;
+
+	hpfs_lock(dir->i_sb);
+	if ((err = hpfs_chk_name(name, &len))) {
+		if (err == -ENAMETOOLONG) {
+			hpfs_unlock(dir->i_sb);
+			return ERR_PTR(-ENAMETOOLONG);
+		}
+		goto end_add;
+	}
+
+	/*
+	 * '.' and '..' will never be passed here.
+	 */
+
+	de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, NULL, &qbh);
+
+	/*
+	 * This is not really a bailout, just means file not found.
+	 */
+
+	if (!de) goto end;
+
+	/*
+	 * Get inode number, what we're after.
+	 */
+
+	ino = le32_to_cpu(de->fnode);
+
+	/*
+	 * Go find or make an inode.
+	 */
+
+	result = iget_locked(dir->i_sb, ino);
+	if (!result) {
+		hpfs_error(dir->i_sb, "hpfs_lookup: can't get inode");
+		result = ERR_PTR(-ENOMEM);
+		goto bail1;
+	}
+	if (result->i_state & I_NEW) {
+		hpfs_init_inode(result);
+		if (de->directory)
+			hpfs_read_inode(result);
+		else if (le32_to_cpu(de->ea_size) && hpfs_sb(dir->i_sb)->sb_eas)
+			hpfs_read_inode(result);
+		else {
+			result->i_mode |= S_IFREG;
+			result->i_mode &= ~0111;
+			result->i_op = &hpfs_file_iops;
+			result->i_fop = &hpfs_file_ops;
+			set_nlink(result, 1);
+		}
+		unlock_new_inode(result);
+	}
+	hpfs_result = hpfs_i(result);
+	if (!de->directory) hpfs_result->i_parent_dir = dir->i_ino;
+
+	if (de->has_acl || de->has_xtd_perm) if (!sb_rdonly(dir->i_sb)) {
+		hpfs_error(result->i_sb, "ACLs or XPERM found. This is probably HPFS386. This driver doesn't support it now. Send me some info on these structures");
+		iput(result);
+		result = ERR_PTR(-EINVAL);
+		goto bail1;
+	}
+
+	/*
+	 * Fill in the info from the directory if this is a newly created
+	 * inode.
+	 */
+
+	if (!result->i_ctime.tv_sec) {
+		if (!(result->i_ctime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->creation_date))))
+			result->i_ctime.tv_sec = 1;
+		result->i_ctime.tv_nsec = 0;
+		result->i_mtime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->write_date));
+		result->i_mtime.tv_nsec = 0;
+		result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->read_date));
+		result->i_atime.tv_nsec = 0;
+		hpfs_result->i_ea_size = le32_to_cpu(de->ea_size);
+		if (!hpfs_result->i_ea_mode && de->read_only)
+			result->i_mode &= ~0222;
+		if (!de->directory) {
+			if (result->i_size == -1) {
+				result->i_size = le32_to_cpu(de->file_size);
+				result->i_data.a_ops = &hpfs_aops;
+				hpfs_i(result)->mmu_private = result->i_size;
+			/*
+			 * i_blocks should count the fnode and any anodes.
+			 * We count 1 for the fnode and don't bother about
+			 * anodes -- the disk heads are on the directory band
+			 * and we want them to stay there.
+			 */
+				result->i_blocks = 1 + ((result->i_size + 511) >> 9);
+			}
+		}
+	}
+
+bail1:
+	hpfs_brelse4(&qbh);
+
+	/*
+	 * Made it.
+	 */
+
+end:
+end_add:
+	hpfs_unlock(dir->i_sb);
+	return d_splice_alias(result, dentry);
+}
+
+const struct file_operations hpfs_dir_ops =
+{
+	.llseek		= hpfs_dir_lseek,
+	.read		= generic_read_dir,
+	.iterate_shared	= hpfs_readdir,
+	.release	= hpfs_dir_release,
+	.fsync		= hpfs_file_fsync,
+	.unlocked_ioctl	= hpfs_ioctl,
+	.compat_ioctl	= compat_ptr_ioctl,
+};