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, 279 insertions, 0 deletions

diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
new file mode 100644
index 000000000..06db901fa
--- /dev/null
+++ b/arch/x86/kernel/smp.c
@@ -0,0 +1,279 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *	Intel SMP support routines.
+ *
+ *	(c) 1995 Alan Cox, Building #3 <alan@lxorguk.ukuu.org.uk>
+ *	(c) 1998-99, 2000, 2009 Ingo Molnar <mingo@redhat.com>
+ *      (c) 2002,2003 Andi Kleen, SuSE Labs.
+ *
+ *	i386 and x86_64 integration by Glauber Costa <gcosta@redhat.com>
+ */
+
+#include <linux/init.h>
+
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/export.h>
+#include <linux/kernel_stat.h>
+#include <linux/mc146818rtc.h>
+#include <linux/cache.h>
+#include <linux/interrupt.h>
+#include <linux/cpu.h>
+#include <linux/gfp.h>
+
+#include <asm/mtrr.h>
+#include <asm/tlbflush.h>
+#include <asm/mmu_context.h>
+#include <asm/proto.h>
+#include <asm/apic.h>
+#include <asm/idtentry.h>
+#include <asm/nmi.h>
+#include <asm/mce.h>
+#include <asm/trace/irq_vectors.h>
+#include <asm/kexec.h>
+#include <asm/virtext.h>
+
+/*
+ *	Some notes on x86 processor bugs affecting SMP operation:
+ *
+ *	Pentium, Pentium Pro, II, III (and all CPUs) have bugs.
+ *	The Linux implications for SMP are handled as follows:
+ *
+ *	Pentium III / [Xeon]
+ *		None of the E1AP-E3AP errata are visible to the user.
+ *
+ *	E1AP.	see PII A1AP
+ *	E2AP.	see PII A2AP
+ *	E3AP.	see PII A3AP
+ *
+ *	Pentium II / [Xeon]
+ *		None of the A1AP-A3AP errata are visible to the user.
+ *
+ *	A1AP.	see PPro 1AP
+ *	A2AP.	see PPro 2AP
+ *	A3AP.	see PPro 7AP
+ *
+ *	Pentium Pro
+ *		None of 1AP-9AP errata are visible to the normal user,
+ *	except occasional delivery of 'spurious interrupt' as trap #15.
+ *	This is very rare and a non-problem.
+ *
+ *	1AP.	Linux maps APIC as non-cacheable
+ *	2AP.	worked around in hardware
+ *	3AP.	fixed in C0 and above steppings microcode update.
+ *		Linux does not use excessive STARTUP_IPIs.
+ *	4AP.	worked around in hardware
+ *	5AP.	symmetric IO mode (normal Linux operation) not affected.
+ *		'noapic' mode has vector 0xf filled out properly.
+ *	6AP.	'noapic' mode might be affected - fixed in later steppings
+ *	7AP.	We do not assume writes to the LVT deasserting IRQs
+ *	8AP.	We do not enable low power mode (deep sleep) during MP bootup
+ *	9AP.	We do not use mixed mode
+ *
+ *	Pentium
+ *		There is a marginal case where REP MOVS on 100MHz SMP
+ *	machines with B stepping processors can fail. XXX should provide
+ *	an L1cache=Writethrough or L1cache=off option.
+ *
+ *		B stepping CPUs may hang. There are hardware work arounds
+ *	for this. We warn about it in case your board doesn't have the work
+ *	arounds. Basically that's so I can tell anyone with a B stepping
+ *	CPU and SMP problems "tough".
+ *
+ *	Specific items [From Pentium Processor Specification Update]
+ *
+ *	1AP.	Linux doesn't use remote read
+ *	2AP.	Linux doesn't trust APIC errors
+ *	3AP.	We work around this
+ *	4AP.	Linux never generated 3 interrupts of the same priority
+ *		to cause a lost local interrupt.
+ *	5AP.	Remote read is never used
+ *	6AP.	not affected - worked around in hardware
+ *	7AP.	not affected - worked around in hardware
+ *	8AP.	worked around in hardware - we get explicit CS errors if not
+ *	9AP.	only 'noapic' mode affected. Might generate spurious
+ *		interrupts, we log only the first one and count the
+ *		rest silently.
+ *	10AP.	not affected - worked around in hardware
+ *	11AP.	Linux reads the APIC between writes to avoid this, as per
+ *		the documentation. Make sure you preserve this as it affects
+ *		the C stepping chips too.
+ *	12AP.	not affected - worked around in hardware
+ *	13AP.	not affected - worked around in hardware
+ *	14AP.	we always deassert INIT during bootup
+ *	15AP.	not affected - worked around in hardware
+ *	16AP.	not affected - worked around in hardware
+ *	17AP.	not affected - worked around in hardware
+ *	18AP.	not affected - worked around in hardware
+ *	19AP.	not affected - worked around in BIOS
+ *
+ *	If this sounds worrying believe me these bugs are either ___RARE___,
+ *	or are signal timing bugs worked around in hardware and there's
+ *	about nothing of note with C stepping upwards.
+ */
+
+static atomic_t stopping_cpu = ATOMIC_INIT(-1);
+static bool smp_no_nmi_ipi = false;
+
+static int smp_stop_nmi_callback(unsigned int val, struct pt_regs *regs)
+{
+	/* We are registered on stopping cpu too, avoid spurious NMI */
+	if (raw_smp_processor_id() == atomic_read(&stopping_cpu))
+		return NMI_HANDLED;
+
+	cpu_emergency_vmxoff();
+	stop_this_cpu(NULL);
+
+	return NMI_HANDLED;
+}
+
+/*
+ * this function calls the 'stop' function on all other CPUs in the system.
+ */
+DEFINE_IDTENTRY_SYSVEC(sysvec_reboot)
+{
+	ack_APIC_irq();
+	cpu_emergency_vmxoff();
+	stop_this_cpu(NULL);
+}
+
+static int register_stop_handler(void)
+{
+	return register_nmi_handler(NMI_LOCAL, smp_stop_nmi_callback,
+				    NMI_FLAG_FIRST, "smp_stop");
+}
+
+static void native_stop_other_cpus(int wait)
+{
+	unsigned long flags;
+	unsigned long timeout;
+
+	if (reboot_force)
+		return;
+
+	/*
+	 * Use an own vector here because smp_call_function
+	 * does lots of things not suitable in a panic situation.
+	 */
+
+	/*
+	 * We start by using the REBOOT_VECTOR irq.
+	 * The irq is treated as a sync point to allow critical
+	 * regions of code on other cpus to release their spin locks
+	 * and re-enable irqs.  Jumping straight to an NMI might
+	 * accidentally cause deadlocks with further shutdown/panic
+	 * code.  By syncing, we give the cpus up to one second to
+	 * finish their work before we force them off with the NMI.
+	 */
+	if (num_online_cpus() > 1) {
+		/* did someone beat us here? */
+		if (atomic_cmpxchg(&stopping_cpu, -1, safe_smp_processor_id()) != -1)
+			return;
+
+		/* sync above data before sending IRQ */
+		wmb();
+
+		apic_send_IPI_allbutself(REBOOT_VECTOR);
+
+		/*
+		 * Don't wait longer than a second for IPI completion. The
+		 * wait request is not checked here because that would
+		 * prevent an NMI shutdown attempt in case that not all
+		 * CPUs reach shutdown state.
+		 */
+		timeout = USEC_PER_SEC;
+		while (num_online_cpus() > 1 && timeout--)
+			udelay(1);
+	}
+
+	/* if the REBOOT_VECTOR didn't work, try with the NMI */
+	if (num_online_cpus() > 1) {
+		/*
+		 * If NMI IPI is enabled, try to register the stop handler
+		 * and send the IPI. In any case try to wait for the other
+		 * CPUs to stop.
+		 */
+		if (!smp_no_nmi_ipi && !register_stop_handler()) {
+			/* Sync above data before sending IRQ */
+			wmb();
+
+			pr_emerg("Shutting down cpus with NMI\n");
+
+			apic_send_IPI_allbutself(NMI_VECTOR);
+		}
+		/*
+		 * Don't wait longer than 10 ms if the caller didn't
+		 * request it. If wait is true, the machine hangs here if
+		 * one or more CPUs do not reach shutdown state.
+		 */
+		timeout = USEC_PER_MSEC * 10;
+		while (num_online_cpus() > 1 && (wait || timeout--))
+			udelay(1);
+	}
+
+	local_irq_save(flags);
+	disable_local_APIC();
+	mcheck_cpu_clear(this_cpu_ptr(&cpu_info));
+	local_irq_restore(flags);
+}
+
+/*
+ * Reschedule call back. KVM uses this interrupt to force a cpu out of
+ * guest mode.
+ */
+DEFINE_IDTENTRY_SYSVEC_SIMPLE(sysvec_reschedule_ipi)
+{
+	ack_APIC_irq();
+	trace_reschedule_entry(RESCHEDULE_VECTOR);
+	inc_irq_stat(irq_resched_count);
+	scheduler_ipi();
+	trace_reschedule_exit(RESCHEDULE_VECTOR);
+}
+
+DEFINE_IDTENTRY_SYSVEC(sysvec_call_function)
+{
+	ack_APIC_irq();
+	trace_call_function_entry(CALL_FUNCTION_VECTOR);
+	inc_irq_stat(irq_call_count);
+	generic_smp_call_function_interrupt();
+	trace_call_function_exit(CALL_FUNCTION_VECTOR);
+}
+
+DEFINE_IDTENTRY_SYSVEC(sysvec_call_function_single)
+{
+	ack_APIC_irq();
+	trace_call_function_single_entry(CALL_FUNCTION_SINGLE_VECTOR);
+	inc_irq_stat(irq_call_count);
+	generic_smp_call_function_single_interrupt();
+	trace_call_function_single_exit(CALL_FUNCTION_SINGLE_VECTOR);
+}
+
+static int __init nonmi_ipi_setup(char *str)
+{
+	smp_no_nmi_ipi = true;
+	return 1;
+}
+
+__setup("nonmi_ipi", nonmi_ipi_setup);
+
+struct smp_ops smp_ops = {
+	.smp_prepare_boot_cpu	= native_smp_prepare_boot_cpu,
+	.smp_prepare_cpus	= native_smp_prepare_cpus,
+	.smp_cpus_done		= native_smp_cpus_done,
+
+	.stop_other_cpus	= native_stop_other_cpus,
+#if defined(CONFIG_KEXEC_CORE)
+	.crash_stop_other_cpus	= kdump_nmi_shootdown_cpus,
+#endif
+	.smp_send_reschedule	= native_smp_send_reschedule,
+
+	.cpu_up			= native_cpu_up,
+	.cpu_die		= native_cpu_die,
+	.cpu_disable		= native_cpu_disable,
+	.play_dead		= native_play_dead,
+
+	.send_call_func_ipi	= native_send_call_func_ipi,
+	.send_call_func_single_ipi = native_send_call_func_single_ipi,
+};
+EXPORT_SYMBOL_GPL(smp_ops);