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, 285 insertions, 0 deletions

diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c
new file mode 100644
index 000000000..e06ce147c
--- /dev/null
+++ b/arch/m68k/kernel/process.c
@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *  linux/arch/m68k/kernel/process.c
+ *
+ *  Copyright (C) 1995  Hamish Macdonald
+ *
+ *  68060 fixes by Jesper Skov
+ */
+
+/*
+ * This file handles the architecture-dependent parts of process handling..
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/sched/debug.h>
+#include <linux/sched/task.h>
+#include <linux/sched/task_stack.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/smp.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/user.h>
+#include <linux/reboot.h>
+#include <linux/init_task.h>
+#include <linux/mqueue.h>
+#include <linux/rcupdate.h>
+#include <linux/syscalls.h>
+#include <linux/uaccess.h>
+#include <linux/elfcore.h>
+
+#include <asm/traps.h>
+#include <asm/machdep.h>
+#include <asm/setup.h>
+
+
+asmlinkage void ret_from_fork(void);
+asmlinkage void ret_from_kernel_thread(void);
+
+void arch_cpu_idle(void)
+{
+#if defined(MACH_ATARI_ONLY)
+	/* block out HSYNC on the atari (falcon) */
+	__asm__("stop #0x2200" : : : "cc");
+#else
+	__asm__("stop #0x2000" : : : "cc");
+#endif
+}
+
+void machine_restart(char * __unused)
+{
+	if (mach_reset)
+		mach_reset();
+	for (;;);
+}
+
+void machine_halt(void)
+{
+	if (mach_halt)
+		mach_halt();
+	for (;;);
+}
+
+void machine_power_off(void)
+{
+	do_kernel_power_off();
+	for (;;);
+}
+
+void (*pm_power_off)(void);
+EXPORT_SYMBOL(pm_power_off);
+
+void show_regs(struct pt_regs * regs)
+{
+	pr_info("Format %02x  Vector: %04x  PC: %08lx  Status: %04x    %s\n",
+		regs->format, regs->vector, regs->pc, regs->sr,
+		print_tainted());
+	pr_info("ORIG_D0: %08lx  D0: %08lx  A2: %08lx  A1: %08lx\n",
+		regs->orig_d0, regs->d0, regs->a2, regs->a1);
+	pr_info("A0: %08lx  D5: %08lx  D4: %08lx\n", regs->a0, regs->d5,
+		regs->d4);
+	pr_info("D3: %08lx  D2: %08lx  D1: %08lx\n", regs->d3, regs->d2,
+		regs->d1);
+	if (!(regs->sr & PS_S))
+		pr_info("USP: %08lx\n", rdusp());
+}
+
+void flush_thread(void)
+{
+	current->thread.fc = USER_DATA;
+#ifdef CONFIG_FPU
+	if (!FPU_IS_EMU) {
+		unsigned long zero = 0;
+		asm volatile("frestore %0": :"m" (zero));
+	}
+#endif
+}
+
+/*
+ * Why not generic sys_clone, you ask?  m68k passes all arguments on stack.
+ * And we need all registers saved, which means a bunch of stuff pushed
+ * on top of pt_regs, which means that sys_clone() arguments would be
+ * buried.  We could, of course, copy them, but it's too costly for no
+ * good reason - generic clone() would have to copy them *again* for
+ * kernel_clone() anyway.  So in this case it's actually better to pass pt_regs *
+ * and extract arguments for kernel_clone() from there.  Eventually we might
+ * go for calling kernel_clone() directly from the wrapper, but only after we
+ * are finished with kernel_clone() prototype conversion.
+ */
+asmlinkage int m68k_clone(struct pt_regs *regs)
+{
+	/* regs will be equal to current_pt_regs() */
+	struct kernel_clone_args args = {
+		.flags		= regs->d1 & ~CSIGNAL,
+		.pidfd		= (int __user *)regs->d3,
+		.child_tid	= (int __user *)regs->d4,
+		.parent_tid	= (int __user *)regs->d3,
+		.exit_signal	= regs->d1 & CSIGNAL,
+		.stack		= regs->d2,
+		.tls		= regs->d5,
+	};
+
+	return kernel_clone(&args);
+}
+
+/*
+ * Because extra registers are saved on the stack after the sys_clone3()
+ * arguments, this C wrapper extracts them from pt_regs * and then calls the
+ * generic sys_clone3() implementation.
+ */
+asmlinkage int m68k_clone3(struct pt_regs *regs)
+{
+	return sys_clone3((struct clone_args __user *)regs->d1, regs->d2);
+}
+
+int copy_thread(struct task_struct *p, const struct kernel_clone_args *args)
+{
+	unsigned long clone_flags = args->flags;
+	unsigned long usp = args->stack;
+	unsigned long tls = args->tls;
+	struct fork_frame {
+		struct switch_stack sw;
+		struct pt_regs regs;
+	} *frame;
+
+	frame = (struct fork_frame *) (task_stack_page(p) + THREAD_SIZE) - 1;
+
+	p->thread.ksp = (unsigned long)frame;
+	p->thread.esp0 = (unsigned long)&frame->regs;
+
+	/*
+	 * Must save the current SFC/DFC value, NOT the value when
+	 * the parent was last descheduled - RGH  10-08-96
+	 */
+	p->thread.fc = USER_DATA;
+
+	if (unlikely(args->fn)) {
+		/* kernel thread */
+		memset(frame, 0, sizeof(struct fork_frame));
+		frame->regs.sr = PS_S;
+		frame->sw.a3 = (unsigned long)args->fn;
+		frame->sw.d7 = (unsigned long)args->fn_arg;
+		frame->sw.retpc = (unsigned long)ret_from_kernel_thread;
+		p->thread.usp = 0;
+		return 0;
+	}
+	memcpy(frame, container_of(current_pt_regs(), struct fork_frame, regs),
+		sizeof(struct fork_frame));
+	frame->regs.d0 = 0;
+	frame->sw.retpc = (unsigned long)ret_from_fork;
+	p->thread.usp = usp ?: rdusp();
+
+	if (clone_flags & CLONE_SETTLS)
+		task_thread_info(p)->tp_value = tls;
+
+#ifdef CONFIG_FPU
+	if (!FPU_IS_EMU) {
+		/* Copy the current fpu state */
+		asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory");
+
+		if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2]) {
+			if (CPU_IS_COLDFIRE) {
+				asm volatile ("fmovemd %/fp0-%/fp7,%0\n\t"
+					      "fmovel %/fpiar,%1\n\t"
+					      "fmovel %/fpcr,%2\n\t"
+					      "fmovel %/fpsr,%3"
+					      :
+					      : "m" (p->thread.fp[0]),
+						"m" (p->thread.fpcntl[0]),
+						"m" (p->thread.fpcntl[1]),
+						"m" (p->thread.fpcntl[2])
+					      : "memory");
+			} else {
+				asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t"
+					      "fmoveml %/fpiar/%/fpcr/%/fpsr,%1"
+					      :
+					      : "m" (p->thread.fp[0]),
+						"m" (p->thread.fpcntl[0])
+					      : "memory");
+			}
+		}
+
+		/* Restore the state in case the fpu was busy */
+		asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0]));
+	}
+#endif /* CONFIG_FPU */
+
+	return 0;
+}
+
+/* Fill in the fpu structure for a core dump.  */
+int elf_core_copy_task_fpregs(struct task_struct *t, elf_fpregset_t *fpu)
+{
+	if (FPU_IS_EMU) {
+		int i;
+
+		memcpy(fpu->fpcntl, current->thread.fpcntl, 12);
+		memcpy(fpu->fpregs, current->thread.fp, 96);
+		/* Convert internal fpu reg representation
+		 * into long double format
+		 */
+		for (i = 0; i < 24; i += 3)
+			fpu->fpregs[i] = ((fpu->fpregs[i] & 0xffff0000) << 15) |
+			                 ((fpu->fpregs[i] & 0x0000ffff) << 16);
+		return 1;
+	}
+
+	if (IS_ENABLED(CONFIG_FPU)) {
+		char fpustate[216];
+
+		/* First dump the fpu context to avoid protocol violation.  */
+		asm volatile ("fsave %0" :: "m" (fpustate[0]) : "memory");
+		if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2])
+			return 0;
+
+		if (CPU_IS_COLDFIRE) {
+			asm volatile ("fmovel %/fpiar,%0\n\t"
+				      "fmovel %/fpcr,%1\n\t"
+				      "fmovel %/fpsr,%2\n\t"
+				      "fmovemd %/fp0-%/fp7,%3"
+				      :
+				      : "m" (fpu->fpcntl[0]),
+					"m" (fpu->fpcntl[1]),
+					"m" (fpu->fpcntl[2]),
+					"m" (fpu->fpregs[0])
+				      : "memory");
+		} else {
+			asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0"
+				      :
+				      : "m" (fpu->fpcntl[0])
+				      : "memory");
+			asm volatile ("fmovemx %/fp0-%/fp7,%0"
+				      :
+				      : "m" (fpu->fpregs[0])
+				      : "memory");
+		}
+	}
+
+	return 1;
+}
+
+unsigned long __get_wchan(struct task_struct *p)
+{
+	unsigned long fp, pc;
+	unsigned long stack_page;
+	int count = 0;
+
+	stack_page = (unsigned long)task_stack_page(p);
+	fp = ((struct switch_stack *)p->thread.ksp)->a6;
+	do {
+		if (fp < stack_page+sizeof(struct thread_info) ||
+		    fp >= 8184+stack_page)
+			return 0;
+		pc = ((unsigned long *)fp)[1];
+		if (!in_sched_functions(pc))
+			return pc;
+		fp = *(unsigned long *) fp;
+	} while (count++ < 16);
+	return 0;
+}