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, 282 insertions, 0 deletions

diff --git a/fs/qnx6/dir.c b/fs/qnx6/dir.c
new file mode 100644
index 000000000..c1cfb8a19
--- /dev/null
+++ b/fs/qnx6/dir.c
@@ -0,0 +1,282 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * QNX6 file system, Linux implementation.
+ *
+ * Version : 1.0.0
+ *
+ * History :
+ *
+ * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release.
+ * 16-02-2012 pagemap extension by Al Viro
+ *
+ */
+
+#include "qnx6.h"
+
+static unsigned qnx6_lfile_checksum(char *name, unsigned size)
+{
+	unsigned crc = 0;
+	char *end = name + size;
+	while (name < end) {
+		crc = ((crc >> 1) + *(name++)) ^
+			((crc & 0x00000001) ? 0x80000000 : 0);
+	}
+	return crc;
+}
+
+static struct page *qnx6_get_page(struct inode *dir, unsigned long n)
+{
+	struct address_space *mapping = dir->i_mapping;
+	struct page *page = read_mapping_page(mapping, n, NULL);
+	if (!IS_ERR(page))
+		kmap(page);
+	return page;
+}
+
+static unsigned last_entry(struct inode *inode, unsigned long page_nr)
+{
+	unsigned long last_byte = inode->i_size;
+	last_byte -= page_nr << PAGE_SHIFT;
+	if (last_byte > PAGE_SIZE)
+		last_byte = PAGE_SIZE;
+	return last_byte / QNX6_DIR_ENTRY_SIZE;
+}
+
+static struct qnx6_long_filename *qnx6_longname(struct super_block *sb,
+					 struct qnx6_long_dir_entry *de,
+					 struct page **p)
+{
+	struct qnx6_sb_info *sbi = QNX6_SB(sb);
+	u32 s = fs32_to_cpu(sbi, de->de_long_inode); /* in block units */
+	u32 n = s >> (PAGE_SHIFT - sb->s_blocksize_bits); /* in pages */
+	/* within page */
+	u32 offs = (s << sb->s_blocksize_bits) & ~PAGE_MASK;
+	struct address_space *mapping = sbi->longfile->i_mapping;
+	struct page *page = read_mapping_page(mapping, n, NULL);
+	if (IS_ERR(page))
+		return ERR_CAST(page);
+	kmap(*p = page);
+	return (struct qnx6_long_filename *)(page_address(page) + offs);
+}
+
+static int qnx6_dir_longfilename(struct inode *inode,
+			struct qnx6_long_dir_entry *de,
+			struct dir_context *ctx,
+			unsigned de_inode)
+{
+	struct qnx6_long_filename *lf;
+	struct super_block *s = inode->i_sb;
+	struct qnx6_sb_info *sbi = QNX6_SB(s);
+	struct page *page;
+	int lf_size;
+
+	if (de->de_size != 0xff) {
+		/* error - long filename entries always have size 0xff
+		   in direntry */
+		pr_err("invalid direntry size (%i).\n", de->de_size);
+		return 0;
+	}
+	lf = qnx6_longname(s, de, &page);
+	if (IS_ERR(lf)) {
+		pr_err("Error reading longname\n");
+		return 0;
+	}
+
+	lf_size = fs16_to_cpu(sbi, lf->lf_size);
+
+	if (lf_size > QNX6_LONG_NAME_MAX) {
+		pr_debug("file %s\n", lf->lf_fname);
+		pr_err("Filename too long (%i)\n", lf_size);
+		qnx6_put_page(page);
+		return 0;
+	}
+
+	/* calc & validate longfilename checksum
+	   mmi 3g filesystem does not have that checksum */
+	if (!test_opt(s, MMI_FS) && fs32_to_cpu(sbi, de->de_checksum) !=
+			qnx6_lfile_checksum(lf->lf_fname, lf_size))
+		pr_info("long filename checksum error.\n");
+
+	pr_debug("qnx6_readdir:%.*s inode:%u\n",
+		 lf_size, lf->lf_fname, de_inode);
+	if (!dir_emit(ctx, lf->lf_fname, lf_size, de_inode, DT_UNKNOWN)) {
+		qnx6_put_page(page);
+		return 0;
+	}
+
+	qnx6_put_page(page);
+	/* success */
+	return 1;
+}
+
+static int qnx6_readdir(struct file *file, struct dir_context *ctx)
+{
+	struct inode *inode = file_inode(file);
+	struct super_block *s = inode->i_sb;
+	struct qnx6_sb_info *sbi = QNX6_SB(s);
+	loff_t pos = ctx->pos & ~(QNX6_DIR_ENTRY_SIZE - 1);
+	unsigned long npages = dir_pages(inode);
+	unsigned long n = pos >> PAGE_SHIFT;
+	unsigned start = (pos & ~PAGE_MASK) / QNX6_DIR_ENTRY_SIZE;
+	bool done = false;
+
+	ctx->pos = pos;
+	if (ctx->pos >= inode->i_size)
+		return 0;
+
+	for ( ; !done && n < npages; n++, start = 0) {
+		struct page *page = qnx6_get_page(inode, n);
+		int limit = last_entry(inode, n);
+		struct qnx6_dir_entry *de;
+		int i = start;
+
+		if (IS_ERR(page)) {
+			pr_err("%s(): read failed\n", __func__);
+			ctx->pos = (n + 1) << PAGE_SHIFT;
+			return PTR_ERR(page);
+		}
+		de = ((struct qnx6_dir_entry *)page_address(page)) + start;
+		for (; i < limit; i++, de++, ctx->pos += QNX6_DIR_ENTRY_SIZE) {
+			int size = de->de_size;
+			u32 no_inode = fs32_to_cpu(sbi, de->de_inode);
+
+			if (!no_inode || !size)
+				continue;
+
+			if (size > QNX6_SHORT_NAME_MAX) {
+				/* long filename detected
+				   get the filename from long filename
+				   structure / block */
+				if (!qnx6_dir_longfilename(inode,
+					(struct qnx6_long_dir_entry *)de,
+					ctx, no_inode)) {
+					done = true;
+					break;
+				}
+			} else {
+				pr_debug("%s():%.*s inode:%u\n",
+					 __func__, size, de->de_fname,
+					 no_inode);
+				if (!dir_emit(ctx, de->de_fname, size,
+				      no_inode, DT_UNKNOWN)) {
+					done = true;
+					break;
+				}
+			}
+		}
+		qnx6_put_page(page);
+	}
+	return 0;
+}
+
+/*
+ * check if the long filename is correct.
+ */
+static unsigned qnx6_long_match(int len, const char *name,
+			struct qnx6_long_dir_entry *de, struct inode *dir)
+{
+	struct super_block *s = dir->i_sb;
+	struct qnx6_sb_info *sbi = QNX6_SB(s);
+	struct page *page;
+	int thislen;
+	struct qnx6_long_filename *lf = qnx6_longname(s, de, &page);
+
+	if (IS_ERR(lf))
+		return 0;
+
+	thislen = fs16_to_cpu(sbi, lf->lf_size);
+	if (len != thislen) {
+		qnx6_put_page(page);
+		return 0;
+	}
+	if (memcmp(name, lf->lf_fname, len) == 0) {
+		qnx6_put_page(page);
+		return fs32_to_cpu(sbi, de->de_inode);
+	}
+	qnx6_put_page(page);
+	return 0;
+}
+
+/*
+ * check if the filename is correct.
+ */
+static unsigned qnx6_match(struct super_block *s, int len, const char *name,
+			struct qnx6_dir_entry *de)
+{
+	struct qnx6_sb_info *sbi = QNX6_SB(s);
+	if (memcmp(name, de->de_fname, len) == 0)
+		return fs32_to_cpu(sbi, de->de_inode);
+	return 0;
+}
+
+
+unsigned qnx6_find_entry(int len, struct inode *dir, const char *name,
+			 struct page **res_page)
+{
+	struct super_block *s = dir->i_sb;
+	struct qnx6_inode_info *ei = QNX6_I(dir);
+	struct page *page = NULL;
+	unsigned long start, n;
+	unsigned long npages = dir_pages(dir);
+	unsigned ino;
+	struct qnx6_dir_entry *de;
+	struct qnx6_long_dir_entry *lde;
+
+	*res_page = NULL;
+
+	if (npages == 0)
+		return 0;
+	start = ei->i_dir_start_lookup;
+	if (start >= npages)
+		start = 0;
+	n = start;
+
+	do {
+		page = qnx6_get_page(dir, n);
+		if (!IS_ERR(page)) {
+			int limit = last_entry(dir, n);
+			int i;
+
+			de = (struct qnx6_dir_entry *)page_address(page);
+			for (i = 0; i < limit; i++, de++) {
+				if (len <= QNX6_SHORT_NAME_MAX) {
+					/* short filename */
+					if (len != de->de_size)
+						continue;
+					ino = qnx6_match(s, len, name, de);
+					if (ino)
+						goto found;
+				} else if (de->de_size == 0xff) {
+					/* deal with long filename */
+					lde = (struct qnx6_long_dir_entry *)de;
+					ino = qnx6_long_match(len,
+								name, lde, dir);
+					if (ino)
+						goto found;
+				} else
+					pr_err("undefined filename size in inode.\n");
+			}
+			qnx6_put_page(page);
+		}
+
+		if (++n >= npages)
+			n = 0;
+	} while (n != start);
+	return 0;
+
+found:
+	*res_page = page;
+	ei->i_dir_start_lookup = n;
+	return ino;
+}
+
+const struct file_operations qnx6_dir_operations = {
+	.llseek		= generic_file_llseek,
+	.read		= generic_read_dir,
+	.iterate_shared	= qnx6_readdir,
+	.fsync		= generic_file_fsync,
+};
+
+const struct inode_operations qnx6_dir_inode_operations = {
+	.lookup		= qnx6_lookup,
+};