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, 268 insertions, 0 deletions

diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c
new file mode 100644
index 000000000..5cbaf6e94
--- /dev/null
+++ b/arch/m68k/mac/macints.c
@@ -0,0 +1,268 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *	Macintosh interrupts
+ *
+ * General design:
+ * In contrary to the Amiga and Atari platforms, the Mac hardware seems to
+ * exclusively use the autovector interrupts (the 'generic level0-level7'
+ * interrupts with exception vectors 0x19-0x1f). The following interrupt levels
+ * are used:
+ *	1	- VIA1
+ *		  - slot 0: one second interrupt (CA2)
+ *		  - slot 1: VBlank (CA1)
+ *		  - slot 2: ADB data ready (SR full)
+ *		  - slot 3: ADB data  (CB2)
+ *		  - slot 4: ADB clock (CB1)
+ *		  - slot 5: timer 2
+ *		  - slot 6: timer 1
+ *		  - slot 7: status of IRQ; signals 'any enabled int.'
+ *
+ *	2	- VIA2 or RBV
+ *		  - slot 0: SCSI DRQ (CA2)
+ *		  - slot 1: NUBUS IRQ (CA1) need to read port A to find which
+ *		  - slot 2: /EXP IRQ (only on IIci)
+ *		  - slot 3: SCSI IRQ (CB2)
+ *		  - slot 4: ASC IRQ (CB1)
+ *		  - slot 5: timer 2 (not on IIci)
+ *		  - slot 6: timer 1 (not on IIci)
+ *		  - slot 7: status of IRQ; signals 'any enabled int.'
+ *
+ * Levels 3-6 vary by machine type. For VIA or RBV Macintoshes:
+ *
+ *	3	- unused (?)
+ *
+ *	4	- SCC
+ *
+ *	5	- unused (?)
+ *		  [serial errors or special conditions seem to raise level 6
+ *		  interrupts on some models (LC4xx?)]
+ *
+ *	6	- off switch (?)
+ *
+ * Machines with Quadra-like VIA hardware, except PSC and PMU machines, support
+ * an alternate interrupt mapping, as used by A/UX. It spreads ethernet and
+ * sound out to their own autovector IRQs and gives VIA1 a higher priority:
+ *
+ *	1	- unused (?)
+ *
+ *	3	- on-board SONIC
+ *
+ *	5	- Apple Sound Chip (ASC)
+ *
+ *	6	- VIA1
+ *
+ * For OSS Macintoshes (IIfx only), we apply an interrupt mapping similar to
+ * the Quadra (A/UX) mapping:
+ *
+ *	1	- ISM IOP (ADB)
+ *
+ *	2	- SCSI
+ *
+ *	3	- NuBus
+ *
+ *	4	- SCC IOP
+ *
+ *	6	- VIA1
+ *
+ * For PSC Macintoshes (660AV, 840AV):
+ *
+ *	3	- PSC level 3
+ *		  - slot 0: MACE
+ *
+ *	4	- PSC level 4
+ *		  - slot 1: SCC channel A interrupt
+ *		  - slot 2: SCC channel B interrupt
+ *		  - slot 3: MACE DMA
+ *
+ *	5	- PSC level 5
+ *
+ *	6	- PSC level 6
+ *
+ * Finally we have good 'ole level 7, the non-maskable interrupt:
+ *
+ *	7	- NMI (programmer's switch on the back of some Macs)
+ *		  Also RAM parity error on models which support it (IIc, IIfx?)
+ *
+ * The current interrupt logic looks something like this:
+ *
+ * - We install dispatchers for the autovector interrupts (1-7). These
+ *   dispatchers are responsible for querying the hardware (the
+ *   VIA/RBV/OSS/PSC chips) to determine the actual interrupt source. Using
+ *   this information a machspec interrupt number is generated by placing the
+ *   index of the interrupt hardware into the low three bits and the original
+ *   autovector interrupt number in the upper 5 bits. The handlers for the
+ *   resulting machspec interrupt are then called.
+ *
+ * - Nubus is a special case because its interrupts are hidden behind two
+ *   layers of hardware. Nubus interrupts come in as index 1 on VIA #2,
+ *   which translates to IRQ number 17. In this spot we install _another_
+ *   dispatcher. This dispatcher finds the interrupting slot number (9-F) and
+ *   then forms a new machspec interrupt number as above with the slot number
+ *   minus 9 in the low three bits and the pseudo-level 7 in the upper five
+ *   bits.  The handlers for this new machspec interrupt number are then
+ *   called. This puts Nubus interrupts into the range 56-62.
+ *
+ * - The Baboon interrupts (used on some PowerBooks) are an even more special
+ *   case. They're hidden behind the Nubus slot $C interrupt thus adding a
+ *   third layer of indirection. Why oh why did the Apple engineers do that?
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/sched/debug.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+
+#include <asm/irq.h>
+#include <asm/macintosh.h>
+#include <asm/macints.h>
+#include <asm/mac_via.h>
+#include <asm/mac_psc.h>
+#include <asm/mac_oss.h>
+#include <asm/mac_iop.h>
+#include <asm/mac_baboon.h>
+#include <asm/hwtest.h>
+#include <asm/irq_regs.h>
+#include <asm/processor.h>
+
+static unsigned int mac_irq_startup(struct irq_data *);
+static void mac_irq_shutdown(struct irq_data *);
+
+static struct irq_chip mac_irq_chip = {
+	.name		= "mac",
+	.irq_enable	= mac_irq_enable,
+	.irq_disable	= mac_irq_disable,
+	.irq_startup	= mac_irq_startup,
+	.irq_shutdown	= mac_irq_shutdown,
+};
+
+static irqreturn_t mac_nmi_handler(int irq, void *dev_id)
+{
+	static volatile int in_nmi;
+
+	if (in_nmi)
+		return IRQ_HANDLED;
+	in_nmi = 1;
+
+	pr_info("Non-Maskable Interrupt\n");
+	show_registers(get_irq_regs());
+
+	in_nmi = 0;
+	return IRQ_HANDLED;
+}
+
+void __init mac_init_IRQ(void)
+{
+	m68k_setup_irq_controller(&mac_irq_chip, handle_simple_irq, IRQ_USER,
+				  NUM_MAC_SOURCES - IRQ_USER);
+
+	/*
+	 * Now register the handlers for the master IRQ handlers
+	 * at levels 1-7. Most of the work is done elsewhere.
+	 */
+
+	if (oss_present)
+		oss_register_interrupts();
+	else
+		via_register_interrupts();
+	if (psc)
+		psc_register_interrupts();
+	if (baboon_present)
+		baboon_register_interrupts();
+	iop_register_interrupts();
+	if (request_irq(IRQ_AUTO_7, mac_nmi_handler, 0, "NMI",
+			mac_nmi_handler))
+		pr_err("Couldn't register NMI\n");
+}
+
+/*
+ *  mac_irq_enable - enable an interrupt source
+ * mac_irq_disable - disable an interrupt source
+ *
+ * These routines are just dispatchers to the VIA/OSS/PSC routines.
+ */
+
+void mac_irq_enable(struct irq_data *data)
+{
+	int irq = data->irq;
+	int irq_src = IRQ_SRC(irq);
+
+	switch(irq_src) {
+	case 1:
+	case 2:
+	case 7:
+		if (oss_present)
+			oss_irq_enable(irq);
+		else
+			via_irq_enable(irq);
+		break;
+	case 3:
+	case 4:
+	case 5:
+	case 6:
+		if (psc)
+			psc_irq_enable(irq);
+		else if (oss_present)
+			oss_irq_enable(irq);
+		break;
+	case 8:
+		if (baboon_present)
+			baboon_irq_enable(irq);
+		break;
+	}
+}
+
+void mac_irq_disable(struct irq_data *data)
+{
+	int irq = data->irq;
+	int irq_src = IRQ_SRC(irq);
+
+	switch(irq_src) {
+	case 1:
+	case 2:
+	case 7:
+		if (oss_present)
+			oss_irq_disable(irq);
+		else
+			via_irq_disable(irq);
+		break;
+	case 3:
+	case 4:
+	case 5:
+	case 6:
+		if (psc)
+			psc_irq_disable(irq);
+		else if (oss_present)
+			oss_irq_disable(irq);
+		break;
+	case 8:
+		if (baboon_present)
+			baboon_irq_disable(irq);
+		break;
+	}
+}
+
+static unsigned int mac_irq_startup(struct irq_data *data)
+{
+	int irq = data->irq;
+
+	if (IRQ_SRC(irq) == 7 && !oss_present)
+		via_nubus_irq_startup(irq);
+	else
+		mac_irq_enable(data);
+
+	return 0;
+}
+
+static void mac_irq_shutdown(struct irq_data *data)
+{
+	int irq = data->irq;
+
+	if (IRQ_SRC(irq) == 7 && !oss_present)
+		via_nubus_irq_shutdown(irq);
+	else
+		mac_irq_disable(data);
+}