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, 380 insertions, 0 deletions

diff --git a/drivers/auxdisplay/cfag12864b.c b/drivers/auxdisplay/cfag12864b.c
new file mode 100644
index 000000000..6526aa51f
--- /dev/null
+++ b/drivers/auxdisplay/cfag12864b.c
@@ -0,0 +1,380 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *    Filename: cfag12864b.c
+ *     Version: 0.1.0
+ * Description: cfag12864b LCD driver
+ *     Depends: ks0108
+ *
+ *      Author: Copyright (C) Miguel Ojeda <ojeda@kernel.org>
+ *        Date: 2006-10-31
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/slab.h>
+#include <linux/cdev.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/jiffies.h>
+#include <linux/mutex.h>
+#include <linux/uaccess.h>
+#include <linux/vmalloc.h>
+#include <linux/workqueue.h>
+#include <linux/ks0108.h>
+#include <linux/cfag12864b.h>
+
+
+#define CFAG12864B_NAME "cfag12864b"
+
+/*
+ * Module Parameters
+ */
+
+static unsigned int cfag12864b_rate = CONFIG_CFAG12864B_RATE;
+module_param(cfag12864b_rate, uint, 0444);
+MODULE_PARM_DESC(cfag12864b_rate,
+	"Refresh rate (hertz)");
+
+unsigned int cfag12864b_getrate(void)
+{
+	return cfag12864b_rate;
+}
+
+/*
+ * cfag12864b Commands
+ *
+ *	E = Enable signal
+ *		Every time E switch from low to high,
+ *		cfag12864b/ks0108 reads the command/data.
+ *
+ *	CS1 = First ks0108controller.
+ *		If high, the first ks0108 controller receives commands/data.
+ *
+ *	CS2 = Second ks0108 controller
+ *		If high, the second ks0108 controller receives commands/data.
+ *
+ *	DI = Data/Instruction
+ *		If low, cfag12864b will expect commands.
+ *		If high, cfag12864b will expect data.
+ *
+ */
+
+#define bit(n) (((unsigned char)1)<<(n))
+
+#define CFAG12864B_BIT_E	(0)
+#define CFAG12864B_BIT_CS1	(2)
+#define CFAG12864B_BIT_CS2	(1)
+#define CFAG12864B_BIT_DI	(3)
+
+static unsigned char cfag12864b_state;
+
+static void cfag12864b_set(void)
+{
+	ks0108_writecontrol(cfag12864b_state);
+}
+
+static void cfag12864b_setbit(unsigned char state, unsigned char n)
+{
+	if (state)
+		cfag12864b_state |= bit(n);
+	else
+		cfag12864b_state &= ~bit(n);
+}
+
+static void cfag12864b_e(unsigned char state)
+{
+	cfag12864b_setbit(state, CFAG12864B_BIT_E);
+	cfag12864b_set();
+}
+
+static void cfag12864b_cs1(unsigned char state)
+{
+	cfag12864b_setbit(state, CFAG12864B_BIT_CS1);
+}
+
+static void cfag12864b_cs2(unsigned char state)
+{
+	cfag12864b_setbit(state, CFAG12864B_BIT_CS2);
+}
+
+static void cfag12864b_di(unsigned char state)
+{
+	cfag12864b_setbit(state, CFAG12864B_BIT_DI);
+}
+
+static void cfag12864b_setcontrollers(unsigned char first,
+	unsigned char second)
+{
+	if (first)
+		cfag12864b_cs1(0);
+	else
+		cfag12864b_cs1(1);
+
+	if (second)
+		cfag12864b_cs2(0);
+	else
+		cfag12864b_cs2(1);
+}
+
+static void cfag12864b_controller(unsigned char which)
+{
+	if (which == 0)
+		cfag12864b_setcontrollers(1, 0);
+	else if (which == 1)
+		cfag12864b_setcontrollers(0, 1);
+}
+
+static void cfag12864b_displaystate(unsigned char state)
+{
+	cfag12864b_di(0);
+	cfag12864b_e(1);
+	ks0108_displaystate(state);
+	cfag12864b_e(0);
+}
+
+static void cfag12864b_address(unsigned char address)
+{
+	cfag12864b_di(0);
+	cfag12864b_e(1);
+	ks0108_address(address);
+	cfag12864b_e(0);
+}
+
+static void cfag12864b_page(unsigned char page)
+{
+	cfag12864b_di(0);
+	cfag12864b_e(1);
+	ks0108_page(page);
+	cfag12864b_e(0);
+}
+
+static void cfag12864b_startline(unsigned char startline)
+{
+	cfag12864b_di(0);
+	cfag12864b_e(1);
+	ks0108_startline(startline);
+	cfag12864b_e(0);
+}
+
+static void cfag12864b_writebyte(unsigned char byte)
+{
+	cfag12864b_di(1);
+	cfag12864b_e(1);
+	ks0108_writedata(byte);
+	cfag12864b_e(0);
+}
+
+static void cfag12864b_nop(void)
+{
+	cfag12864b_startline(0);
+}
+
+/*
+ * cfag12864b Internal Commands
+ */
+
+static void cfag12864b_on(void)
+{
+	cfag12864b_setcontrollers(1, 1);
+	cfag12864b_displaystate(1);
+}
+
+static void cfag12864b_off(void)
+{
+	cfag12864b_setcontrollers(1, 1);
+	cfag12864b_displaystate(0);
+}
+
+static void cfag12864b_clear(void)
+{
+	unsigned char i, j;
+
+	cfag12864b_setcontrollers(1, 1);
+	for (i = 0; i < CFAG12864B_PAGES; i++) {
+		cfag12864b_page(i);
+		cfag12864b_address(0);
+		for (j = 0; j < CFAG12864B_ADDRESSES; j++)
+			cfag12864b_writebyte(0);
+	}
+}
+
+/*
+ * Update work
+ */
+
+unsigned char *cfag12864b_buffer;
+static unsigned char *cfag12864b_cache;
+static DEFINE_MUTEX(cfag12864b_mutex);
+static unsigned char cfag12864b_updating;
+static void cfag12864b_update(struct work_struct *delayed_work);
+static struct workqueue_struct *cfag12864b_workqueue;
+static DECLARE_DELAYED_WORK(cfag12864b_work, cfag12864b_update);
+
+static void cfag12864b_queue(void)
+{
+	queue_delayed_work(cfag12864b_workqueue, &cfag12864b_work,
+		HZ / cfag12864b_rate);
+}
+
+unsigned char cfag12864b_enable(void)
+{
+	unsigned char ret;
+
+	mutex_lock(&cfag12864b_mutex);
+
+	if (!cfag12864b_updating) {
+		cfag12864b_updating = 1;
+		cfag12864b_queue();
+		ret = 0;
+	} else
+		ret = 1;
+
+	mutex_unlock(&cfag12864b_mutex);
+
+	return ret;
+}
+
+void cfag12864b_disable(void)
+{
+	mutex_lock(&cfag12864b_mutex);
+
+	if (cfag12864b_updating) {
+		cfag12864b_updating = 0;
+		cancel_delayed_work(&cfag12864b_work);
+		flush_workqueue(cfag12864b_workqueue);
+	}
+
+	mutex_unlock(&cfag12864b_mutex);
+}
+
+unsigned char cfag12864b_isenabled(void)
+{
+	return cfag12864b_updating;
+}
+
+static void cfag12864b_update(struct work_struct *work)
+{
+	unsigned char c;
+	unsigned short i, j, k, b;
+
+	if (memcmp(cfag12864b_cache, cfag12864b_buffer, CFAG12864B_SIZE)) {
+		for (i = 0; i < CFAG12864B_CONTROLLERS; i++) {
+			cfag12864b_controller(i);
+			cfag12864b_nop();
+			for (j = 0; j < CFAG12864B_PAGES; j++) {
+				cfag12864b_page(j);
+				cfag12864b_nop();
+				cfag12864b_address(0);
+				cfag12864b_nop();
+				for (k = 0; k < CFAG12864B_ADDRESSES; k++) {
+					for (c = 0, b = 0; b < 8; b++)
+						if (cfag12864b_buffer
+							[i * CFAG12864B_ADDRESSES / 8
+							+ k / 8 + (j * 8 + b) *
+							CFAG12864B_WIDTH / 8]
+							& bit(k % 8))
+							c |= bit(b);
+					cfag12864b_writebyte(c);
+				}
+			}
+		}
+
+		memcpy(cfag12864b_cache, cfag12864b_buffer, CFAG12864B_SIZE);
+	}
+
+	if (cfag12864b_updating)
+		cfag12864b_queue();
+}
+
+/*
+ * cfag12864b Exported Symbols
+ */
+
+EXPORT_SYMBOL_GPL(cfag12864b_buffer);
+EXPORT_SYMBOL_GPL(cfag12864b_getrate);
+EXPORT_SYMBOL_GPL(cfag12864b_enable);
+EXPORT_SYMBOL_GPL(cfag12864b_disable);
+EXPORT_SYMBOL_GPL(cfag12864b_isenabled);
+
+/*
+ * Is the module inited?
+ */
+
+static unsigned char cfag12864b_inited;
+unsigned char cfag12864b_isinited(void)
+{
+	return cfag12864b_inited;
+}
+EXPORT_SYMBOL_GPL(cfag12864b_isinited);
+
+/*
+ * Module Init & Exit
+ */
+
+static int __init cfag12864b_init(void)
+{
+	int ret = -EINVAL;
+
+	/* ks0108_init() must be called first */
+	if (!ks0108_isinited()) {
+		printk(KERN_ERR CFAG12864B_NAME ": ERROR: "
+			"ks0108 is not initialized\n");
+		goto none;
+	}
+	BUILD_BUG_ON(PAGE_SIZE < CFAG12864B_SIZE);
+
+	cfag12864b_buffer = (unsigned char *) get_zeroed_page(GFP_KERNEL);
+	if (cfag12864b_buffer == NULL) {
+		printk(KERN_ERR CFAG12864B_NAME ": ERROR: "
+			"can't get a free page\n");
+		ret = -ENOMEM;
+		goto none;
+	}
+
+	cfag12864b_cache = kmalloc(CFAG12864B_SIZE,
+				   GFP_KERNEL);
+	if (cfag12864b_cache == NULL) {
+		printk(KERN_ERR CFAG12864B_NAME ": ERROR: "
+			"can't alloc cache buffer (%i bytes)\n",
+			CFAG12864B_SIZE);
+		ret = -ENOMEM;
+		goto bufferalloced;
+	}
+
+	cfag12864b_workqueue = create_singlethread_workqueue(CFAG12864B_NAME);
+	if (cfag12864b_workqueue == NULL)
+		goto cachealloced;
+
+	cfag12864b_clear();
+	cfag12864b_on();
+
+	cfag12864b_inited = 1;
+	return 0;
+
+cachealloced:
+	kfree(cfag12864b_cache);
+
+bufferalloced:
+	free_page((unsigned long) cfag12864b_buffer);
+
+none:
+	return ret;
+}
+
+static void __exit cfag12864b_exit(void)
+{
+	cfag12864b_disable();
+	cfag12864b_off();
+	destroy_workqueue(cfag12864b_workqueue);
+	kfree(cfag12864b_cache);
+	free_page((unsigned long) cfag12864b_buffer);
+}
+
+module_init(cfag12864b_init);
+module_exit(cfag12864b_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Miguel Ojeda <ojeda@kernel.org>");
+MODULE_DESCRIPTION("cfag12864b LCD driver");