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, 275 insertions, 0 deletions

diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
new file mode 100644
index 000000000..056df034e
--- /dev/null
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -0,0 +1,275 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *  sun4m SMP support.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/clockchips.h>
+#include <linux/interrupt.h>
+#include <linux/profile.h>
+#include <linux/delay.h>
+#include <linux/sched/mm.h>
+#include <linux/cpu.h>
+
+#include <asm/cacheflush.h>
+#include <asm/switch_to.h>
+#include <asm/tlbflush.h>
+#include <asm/timer.h>
+#include <asm/oplib.h>
+
+#include "irq.h"
+#include "kernel.h"
+
+#define IRQ_IPI_SINGLE		12
+#define IRQ_IPI_MASK		13
+#define IRQ_IPI_RESCHED		14
+#define IRQ_CROSS_CALL		15
+
+static inline unsigned long
+swap_ulong(volatile unsigned long *ptr, unsigned long val)
+{
+	__asm__ __volatile__("swap [%1], %0\n\t" :
+			     "=&r" (val), "=&r" (ptr) :
+			     "0" (val), "1" (ptr));
+	return val;
+}
+
+void sun4m_cpu_pre_starting(void *arg)
+{
+}
+
+void sun4m_cpu_pre_online(void *arg)
+{
+	int cpuid = hard_smp_processor_id();
+
+	/* Allow master to continue. The master will then give us the
+	 * go-ahead by setting the smp_commenced_mask and will wait without
+	 * timeouts until our setup is completed fully (signified by
+	 * our bit being set in the cpu_online_mask).
+	 */
+	swap_ulong(&cpu_callin_map[cpuid], 1);
+
+	/* XXX: What's up with all the flushes? */
+	local_ops->cache_all();
+	local_ops->tlb_all();
+
+	/* Fix idle thread fields. */
+	__asm__ __volatile__("ld [%0], %%g6\n\t"
+			     : : "r" (&current_set[cpuid])
+			     : "memory" /* paranoid */);
+
+	/* Attach to the address space of init_task. */
+	mmgrab(&init_mm);
+	current->active_mm = &init_mm;
+
+	while (!cpumask_test_cpu(cpuid, &smp_commenced_mask))
+		mb();
+}
+
+/*
+ *	Cycle through the processors asking the PROM to start each one.
+ */
+void __init smp4m_boot_cpus(void)
+{
+	sun4m_unmask_profile_irq();
+	local_ops->cache_all();
+}
+
+int smp4m_boot_one_cpu(int i, struct task_struct *idle)
+{
+	unsigned long *entry = &sun4m_cpu_startup;
+	int timeout;
+	int cpu_node;
+
+	cpu_find_by_mid(i, &cpu_node);
+	current_set[i] = task_thread_info(idle);
+
+	/* See trampoline.S for details... */
+	entry += ((i - 1) * 3);
+
+	/*
+	 * Initialize the contexts table
+	 * Since the call to prom_startcpu() trashes the structure,
+	 * we need to re-initialize it for each cpu
+	 */
+	smp_penguin_ctable.which_io = 0;
+	smp_penguin_ctable.phys_addr = (unsigned int) srmmu_ctx_table_phys;
+	smp_penguin_ctable.reg_size = 0;
+
+	/* whirrr, whirrr, whirrrrrrrrr... */
+	printk(KERN_INFO "Starting CPU %d at %p\n", i, entry);
+	local_ops->cache_all();
+	prom_startcpu(cpu_node, &smp_penguin_ctable, 0, (char *)entry);
+
+	/* wheee... it's going... */
+	for (timeout = 0; timeout < 10000; timeout++) {
+		if (cpu_callin_map[i])
+			break;
+		udelay(200);
+	}
+
+	if (!(cpu_callin_map[i])) {
+		printk(KERN_ERR "Processor %d is stuck.\n", i);
+		return -ENODEV;
+	}
+
+	local_ops->cache_all();
+	return 0;
+}
+
+void __init smp4m_smp_done(void)
+{
+	int i, first;
+	int *prev;
+
+	/* setup cpu list for irq rotation */
+	first = 0;
+	prev = &first;
+	for_each_online_cpu(i) {
+		*prev = i;
+		prev = &cpu_data(i).next;
+	}
+	*prev = first;
+	local_ops->cache_all();
+
+	/* Ok, they are spinning and ready to go. */
+}
+
+static void sun4m_send_ipi(int cpu, int level)
+{
+	sbus_writel(SUN4M_SOFT_INT(level), &sun4m_irq_percpu[cpu]->set);
+}
+
+static void sun4m_ipi_resched(int cpu)
+{
+	sun4m_send_ipi(cpu, IRQ_IPI_RESCHED);
+}
+
+static void sun4m_ipi_single(int cpu)
+{
+	sun4m_send_ipi(cpu, IRQ_IPI_SINGLE);
+}
+
+static void sun4m_ipi_mask_one(int cpu)
+{
+	sun4m_send_ipi(cpu, IRQ_IPI_MASK);
+}
+
+static struct smp_funcall {
+	void *func;
+	unsigned long arg1;
+	unsigned long arg2;
+	unsigned long arg3;
+	unsigned long arg4;
+	unsigned long arg5;
+	unsigned long processors_in[SUN4M_NCPUS];  /* Set when ipi entered. */
+	unsigned long processors_out[SUN4M_NCPUS]; /* Set when ipi exited. */
+} ccall_info;
+
+static DEFINE_SPINLOCK(cross_call_lock);
+
+/* Cross calls must be serialized, at least currently. */
+static void sun4m_cross_call(void *func, cpumask_t mask, unsigned long arg1,
+			     unsigned long arg2, unsigned long arg3,
+			     unsigned long arg4)
+{
+		register int ncpus = SUN4M_NCPUS;
+		unsigned long flags;
+
+		spin_lock_irqsave(&cross_call_lock, flags);
+
+		/* Init function glue. */
+		ccall_info.func = func;
+		ccall_info.arg1 = arg1;
+		ccall_info.arg2 = arg2;
+		ccall_info.arg3 = arg3;
+		ccall_info.arg4 = arg4;
+		ccall_info.arg5 = 0;
+
+		/* Init receive/complete mapping, plus fire the IPI's off. */
+		{
+			register int i;
+
+			cpumask_clear_cpu(smp_processor_id(), &mask);
+			cpumask_and(&mask, cpu_online_mask, &mask);
+			for (i = 0; i < ncpus; i++) {
+				if (cpumask_test_cpu(i, &mask)) {
+					ccall_info.processors_in[i] = 0;
+					ccall_info.processors_out[i] = 0;
+					sun4m_send_ipi(i, IRQ_CROSS_CALL);
+				} else {
+					ccall_info.processors_in[i] = 1;
+					ccall_info.processors_out[i] = 1;
+				}
+			}
+		}
+
+		{
+			register int i;
+
+			i = 0;
+			do {
+				if (!cpumask_test_cpu(i, &mask))
+					continue;
+				while (!ccall_info.processors_in[i])
+					barrier();
+			} while (++i < ncpus);
+
+			i = 0;
+			do {
+				if (!cpumask_test_cpu(i, &mask))
+					continue;
+				while (!ccall_info.processors_out[i])
+					barrier();
+			} while (++i < ncpus);
+		}
+		spin_unlock_irqrestore(&cross_call_lock, flags);
+}
+
+/* Running cross calls. */
+void smp4m_cross_call_irq(void)
+{
+	void (*func)(unsigned long, unsigned long, unsigned long, unsigned long,
+		     unsigned long) = ccall_info.func;
+	int i = smp_processor_id();
+
+	ccall_info.processors_in[i] = 1;
+	func(ccall_info.arg1, ccall_info.arg2, ccall_info.arg3, ccall_info.arg4,
+	     ccall_info.arg5);
+	ccall_info.processors_out[i] = 1;
+}
+
+void smp4m_percpu_timer_interrupt(struct pt_regs *regs)
+{
+	struct pt_regs *old_regs;
+	struct clock_event_device *ce;
+	int cpu = smp_processor_id();
+
+	old_regs = set_irq_regs(regs);
+
+	ce = &per_cpu(sparc32_clockevent, cpu);
+
+	if (clockevent_state_periodic(ce))
+		sun4m_clear_profile_irq(cpu);
+	else
+		sparc_config.load_profile_irq(cpu, 0); /* Is this needless? */
+
+	irq_enter();
+	ce->event_handler(ce);
+	irq_exit();
+
+	set_irq_regs(old_regs);
+}
+
+static const struct sparc32_ipi_ops sun4m_ipi_ops = {
+	.cross_call = sun4m_cross_call,
+	.resched    = sun4m_ipi_resched,
+	.single     = sun4m_ipi_single,
+	.mask_one   = sun4m_ipi_mask_one,
+};
+
+void __init sun4m_init_smp(void)
+{
+	sparc32_ipi_ops = &sun4m_ipi_ops;
+}