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, 270 insertions, 0 deletions

diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
new file mode 100644
index 000000000..d93595b39
--- /dev/null
+++ b/drivers/sbus/char/display7seg.c
@@ -0,0 +1,270 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* display7seg.c - Driver implementation for the 7-segment display
+ *                 present on Sun Microsystems CP1400 and CP1500
+ *
+ * Copyright (c) 2000 Eric Brower (ebrower@usa.net)
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/major.h>
+#include <linux/miscdevice.h>
+#include <linux/ioport.h>		/* request_region */
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/atomic.h>
+#include <linux/uaccess.h>		/* put_/get_user			*/
+#include <asm/io.h>
+
+#include <asm/display7seg.h>
+
+#define DRIVER_NAME	"d7s"
+#define PFX		DRIVER_NAME ": "
+
+static DEFINE_MUTEX(d7s_mutex);
+static int sol_compat = 0;		/* Solaris compatibility mode	*/
+
+/* Solaris compatibility flag -
+ * The Solaris implementation omits support for several
+ * documented driver features (ref Sun doc 806-0180-03).  
+ * By default, this module supports the documented driver 
+ * abilities, rather than the Solaris implementation:
+ *
+ * 	1) Device ALWAYS reverts to OBP-specified FLIPPED mode
+ * 	   upon closure of device or module unload.
+ * 	2) Device ioctls D7SIOCRD/D7SIOCWR honor toggling of
+ * 	   FLIP bit
+ *
+ * If you wish the device to operate as under Solaris,
+ * omitting above features, set this parameter to non-zero.
+ */
+module_param(sol_compat, int, 0);
+MODULE_PARM_DESC(sol_compat, 
+		 "Disables documented functionality omitted from Solaris driver");
+
+MODULE_AUTHOR("Eric Brower <ebrower@usa.net>");
+MODULE_DESCRIPTION("7-Segment Display driver for Sun Microsystems CP1400/1500");
+MODULE_LICENSE("GPL");
+
+struct d7s {
+	void __iomem	*regs;
+	bool		flipped;
+};
+struct d7s *d7s_device;
+
+/*
+ * Register block address- see header for details
+ * -----------------------------------------
+ * | DP | ALARM | FLIP | 4 | 3 | 2 | 1 | 0 |
+ * -----------------------------------------
+ *
+ * DP 		- Toggles decimal point on/off 
+ * ALARM	- Toggles "Alarm" LED green/red
+ * FLIP		- Inverts display for upside-down mounted board
+ * bits 0-4	- 7-segment display contents
+ */
+static atomic_t d7s_users = ATOMIC_INIT(0);
+
+static int d7s_open(struct inode *inode, struct file *f)
+{
+	if (D7S_MINOR != iminor(inode))
+		return -ENODEV;
+	atomic_inc(&d7s_users);
+	return 0;
+}
+
+static int d7s_release(struct inode *inode, struct file *f)
+{
+	/* Reset flipped state to OBP default only if
+	 * no other users have the device open and we
+	 * are not operating in solaris-compat mode
+	 */
+	if (atomic_dec_and_test(&d7s_users) && !sol_compat) {
+		struct d7s *p = d7s_device;
+		u8 regval = 0;
+
+		regval = readb(p->regs);
+		if (p->flipped)
+			regval |= D7S_FLIP;
+		else
+			regval &= ~D7S_FLIP;
+		writeb(regval, p->regs);
+	}
+
+	return 0;
+}
+
+static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct d7s *p = d7s_device;
+	u8 regs = readb(p->regs);
+	int error = 0;
+	u8 ireg = 0;
+
+	if (D7S_MINOR != iminor(file_inode(file)))
+		return -ENODEV;
+
+	mutex_lock(&d7s_mutex);
+	switch (cmd) {
+	case D7SIOCWR:
+		/* assign device register values we mask-out D7S_FLIP
+		 * if in sol_compat mode
+		 */
+		if (get_user(ireg, (int __user *) arg)) {
+			error = -EFAULT;
+			break;
+		}
+		if (sol_compat) {
+			if (regs & D7S_FLIP)
+				ireg |= D7S_FLIP;
+			else
+				ireg &= ~D7S_FLIP;
+		}
+		writeb(ireg, p->regs);
+		break;
+
+	case D7SIOCRD:
+		/* retrieve device register values
+		 * NOTE: Solaris implementation returns D7S_FLIP bit
+		 * as toggled by user, even though it does not honor it.
+		 * This driver will not misinform you about the state
+		 * of your hardware while in sol_compat mode
+		 */
+		if (put_user(regs, (int __user *) arg)) {
+			error = -EFAULT;
+			break;
+		}
+		break;
+
+	case D7SIOCTM:
+		/* toggle device mode-- flip display orientation */
+		regs ^= D7S_FLIP;
+		writeb(regs, p->regs);
+		break;
+	}
+	mutex_unlock(&d7s_mutex);
+
+	return error;
+}
+
+static const struct file_operations d7s_fops = {
+	.owner =		THIS_MODULE,
+	.unlocked_ioctl =	d7s_ioctl,
+	.compat_ioctl =		compat_ptr_ioctl,
+	.open =			d7s_open,
+	.release =		d7s_release,
+	.llseek = noop_llseek,
+};
+
+static struct miscdevice d7s_miscdev = {
+	.minor		= D7S_MINOR,
+	.name		= DRIVER_NAME,
+	.fops		= &d7s_fops
+};
+
+static int d7s_probe(struct platform_device *op)
+{
+	struct device_node *opts;
+	int err = -EINVAL;
+	struct d7s *p;
+	u8 regs;
+
+	if (d7s_device)
+		goto out;
+
+	p = devm_kzalloc(&op->dev, sizeof(*p), GFP_KERNEL);
+	err = -ENOMEM;
+	if (!p)
+		goto out;
+
+	p->regs = of_ioremap(&op->resource[0], 0, sizeof(u8), "d7s");
+	if (!p->regs) {
+		printk(KERN_ERR PFX "Cannot map chip registers\n");
+		goto out;
+	}
+
+	err = misc_register(&d7s_miscdev);
+	if (err) {
+		printk(KERN_ERR PFX "Unable to acquire miscdevice minor %i\n",
+		       D7S_MINOR);
+		goto out_iounmap;
+	}
+
+	/* OBP option "d7s-flipped?" is honored as default for the
+	 * device, and reset default when detached
+	 */
+	regs = readb(p->regs);
+	opts = of_find_node_by_path("/options");
+	if (opts &&
+	    of_get_property(opts, "d7s-flipped?", NULL))
+		p->flipped = true;
+
+	if (p->flipped)
+		regs |= D7S_FLIP;
+	else
+		regs &= ~D7S_FLIP;
+
+	writeb(regs,  p->regs);
+
+	printk(KERN_INFO PFX "7-Segment Display%pOF at [%s:0x%llx] %s\n",
+	       op->dev.of_node,
+	       (regs & D7S_FLIP) ? " (FLIPPED)" : "",
+	       op->resource[0].start,
+	       sol_compat ? "in sol_compat mode" : "");
+
+	dev_set_drvdata(&op->dev, p);
+	d7s_device = p;
+	err = 0;
+	of_node_put(opts);
+
+out:
+	return err;
+
+out_iounmap:
+	of_iounmap(&op->resource[0], p->regs, sizeof(u8));
+	goto out;
+}
+
+static int d7s_remove(struct platform_device *op)
+{
+	struct d7s *p = dev_get_drvdata(&op->dev);
+	u8 regs = readb(p->regs);
+
+	/* Honor OBP d7s-flipped? unless operating in solaris-compat mode */
+	if (sol_compat) {
+		if (p->flipped)
+			regs |= D7S_FLIP;
+		else
+			regs &= ~D7S_FLIP;
+		writeb(regs, p->regs);
+	}
+
+	misc_deregister(&d7s_miscdev);
+	of_iounmap(&op->resource[0], p->regs, sizeof(u8));
+
+	return 0;
+}
+
+static const struct of_device_id d7s_match[] = {
+	{
+		.name = "display7seg",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, d7s_match);
+
+static struct platform_driver d7s_driver = {
+	.driver = {
+		.name = DRIVER_NAME,
+		.of_match_table = d7s_match,
+	},
+	.probe		= d7s_probe,
+	.remove		= d7s_remove,
+};
+
+module_platform_driver(d7s_driver);