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, 307 insertions, 0 deletions

diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
new file mode 100644
index 000000000..ee1147c98
--- /dev/null
+++ b/arch/powerpc/kvm/emulate.c
@@ -0,0 +1,307 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *
+ * Copyright IBM Corp. 2007
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ *
+ * Authors: Hollis Blanchard <hollisb@us.ibm.com>
+ */
+
+#include <linux/jiffies.h>
+#include <linux/hrtimer.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/kvm_host.h>
+#include <linux/clockchips.h>
+
+#include <asm/reg.h>
+#include <asm/time.h>
+#include <asm/byteorder.h>
+#include <asm/kvm_ppc.h>
+#include <asm/disassemble.h>
+#include <asm/ppc-opcode.h>
+#include "timing.h"
+#include "trace.h"
+
+void kvmppc_emulate_dec(struct kvm_vcpu *vcpu)
+{
+	unsigned long dec_nsec;
+	unsigned long long dec_time;
+
+	pr_debug("mtDEC: %lx\n", vcpu->arch.dec);
+	hrtimer_try_to_cancel(&vcpu->arch.dec_timer);
+
+#ifdef CONFIG_PPC_BOOK3S
+	/* mtdec lowers the interrupt line when positive. */
+	kvmppc_core_dequeue_dec(vcpu);
+#endif
+
+#ifdef CONFIG_BOOKE
+	/* On BOOKE, DEC = 0 is as good as decrementer not enabled */
+	if (vcpu->arch.dec == 0)
+		return;
+#endif
+
+	/*
+	 * The decrementer ticks at the same rate as the timebase, so
+	 * that's how we convert the guest DEC value to the number of
+	 * host ticks.
+	 */
+
+	dec_time = vcpu->arch.dec;
+	/*
+	 * Guest timebase ticks at the same frequency as host timebase.
+	 * So use the host timebase calculations for decrementer emulation.
+	 */
+	dec_time = tb_to_ns(dec_time);
+	dec_nsec = do_div(dec_time, NSEC_PER_SEC);
+	hrtimer_start(&vcpu->arch.dec_timer,
+		ktime_set(dec_time, dec_nsec), HRTIMER_MODE_REL);
+	vcpu->arch.dec_jiffies = get_tb();
+}
+
+u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb)
+{
+	u64 jd = tb - vcpu->arch.dec_jiffies;
+
+#ifdef CONFIG_BOOKE
+	if (vcpu->arch.dec < jd)
+		return 0;
+#endif
+
+	return vcpu->arch.dec - jd;
+}
+
+static int kvmppc_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
+{
+	enum emulation_result emulated = EMULATE_DONE;
+	ulong spr_val = kvmppc_get_gpr(vcpu, rs);
+
+	switch (sprn) {
+	case SPRN_SRR0:
+		kvmppc_set_srr0(vcpu, spr_val);
+		break;
+	case SPRN_SRR1:
+		kvmppc_set_srr1(vcpu, spr_val);
+		break;
+
+	/* XXX We need to context-switch the timebase for
+	 * watchdog and FIT. */
+	case SPRN_TBWL: break;
+	case SPRN_TBWU: break;
+
+	case SPRN_DEC:
+		vcpu->arch.dec = (u32) spr_val;
+		kvmppc_emulate_dec(vcpu);
+		break;
+
+	case SPRN_SPRG0:
+		kvmppc_set_sprg0(vcpu, spr_val);
+		break;
+	case SPRN_SPRG1:
+		kvmppc_set_sprg1(vcpu, spr_val);
+		break;
+	case SPRN_SPRG2:
+		kvmppc_set_sprg2(vcpu, spr_val);
+		break;
+	case SPRN_SPRG3:
+		kvmppc_set_sprg3(vcpu, spr_val);
+		break;
+
+	/* PIR can legally be written, but we ignore it */
+	case SPRN_PIR: break;
+
+	default:
+		emulated = vcpu->kvm->arch.kvm_ops->emulate_mtspr(vcpu, sprn,
+								  spr_val);
+		if (emulated == EMULATE_FAIL)
+			printk(KERN_INFO "mtspr: unknown spr "
+				"0x%x\n", sprn);
+		break;
+	}
+
+	kvmppc_set_exit_type(vcpu, EMULATED_MTSPR_EXITS);
+
+	return emulated;
+}
+
+static int kvmppc_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
+{
+	enum emulation_result emulated = EMULATE_DONE;
+	ulong spr_val = 0;
+
+	switch (sprn) {
+	case SPRN_SRR0:
+		spr_val = kvmppc_get_srr0(vcpu);
+		break;
+	case SPRN_SRR1:
+		spr_val = kvmppc_get_srr1(vcpu);
+		break;
+	case SPRN_PVR:
+		spr_val = vcpu->arch.pvr;
+		break;
+	case SPRN_PIR:
+		spr_val = vcpu->vcpu_id;
+		break;
+
+	/* Note: mftb and TBRL/TBWL are user-accessible, so
+	 * the guest can always access the real TB anyways.
+	 * In fact, we probably will never see these traps. */
+	case SPRN_TBWL:
+		spr_val = get_tb() >> 32;
+		break;
+	case SPRN_TBWU:
+		spr_val = get_tb();
+		break;
+
+	case SPRN_SPRG0:
+		spr_val = kvmppc_get_sprg0(vcpu);
+		break;
+	case SPRN_SPRG1:
+		spr_val = kvmppc_get_sprg1(vcpu);
+		break;
+	case SPRN_SPRG2:
+		spr_val = kvmppc_get_sprg2(vcpu);
+		break;
+	case SPRN_SPRG3:
+		spr_val = kvmppc_get_sprg3(vcpu);
+		break;
+	/* Note: SPRG4-7 are user-readable, so we don't get
+	 * a trap. */
+
+	case SPRN_DEC:
+		spr_val = kvmppc_get_dec(vcpu, get_tb());
+		break;
+	default:
+		emulated = vcpu->kvm->arch.kvm_ops->emulate_mfspr(vcpu, sprn,
+								  &spr_val);
+		if (unlikely(emulated == EMULATE_FAIL)) {
+			printk(KERN_INFO "mfspr: unknown spr "
+				"0x%x\n", sprn);
+		}
+		break;
+	}
+
+	if (emulated == EMULATE_DONE)
+		kvmppc_set_gpr(vcpu, rt, spr_val);
+	kvmppc_set_exit_type(vcpu, EMULATED_MFSPR_EXITS);
+
+	return emulated;
+}
+
+/* XXX Should probably auto-generate instruction decoding for a particular core
+ * from opcode tables in the future. */
+int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu)
+{
+	u32 inst;
+	int rs, rt, sprn;
+	enum emulation_result emulated;
+	int advance = 1;
+
+	/* this default type might be overwritten by subcategories */
+	kvmppc_set_exit_type(vcpu, EMULATED_INST_EXITS);
+
+	emulated = kvmppc_get_last_inst(vcpu, INST_GENERIC, &inst);
+	if (emulated != EMULATE_DONE)
+		return emulated;
+
+	pr_debug("Emulating opcode %d / %d\n", get_op(inst), get_xop(inst));
+
+	rs = get_rs(inst);
+	rt = get_rt(inst);
+	sprn = get_sprn(inst);
+
+	switch (get_op(inst)) {
+	case OP_TRAP:
+#ifdef CONFIG_PPC_BOOK3S
+	case OP_TRAP_64:
+		kvmppc_core_queue_program(vcpu, SRR1_PROGTRAP);
+#else
+		kvmppc_core_queue_program(vcpu,
+					  vcpu->arch.shared->esr | ESR_PTR);
+#endif
+		advance = 0;
+		break;
+
+	case 31:
+		switch (get_xop(inst)) {
+
+		case OP_31_XOP_TRAP:
+#ifdef CONFIG_64BIT
+		case OP_31_XOP_TRAP_64:
+#endif
+#ifdef CONFIG_PPC_BOOK3S
+			kvmppc_core_queue_program(vcpu, SRR1_PROGTRAP);
+#else
+			kvmppc_core_queue_program(vcpu,
+					vcpu->arch.shared->esr | ESR_PTR);
+#endif
+			advance = 0;
+			break;
+
+		case OP_31_XOP_MFSPR:
+			emulated = kvmppc_emulate_mfspr(vcpu, sprn, rt);
+			if (emulated == EMULATE_AGAIN) {
+				emulated = EMULATE_DONE;
+				advance = 0;
+			}
+			break;
+
+		case OP_31_XOP_MTSPR:
+			emulated = kvmppc_emulate_mtspr(vcpu, sprn, rs);
+			if (emulated == EMULATE_AGAIN) {
+				emulated = EMULATE_DONE;
+				advance = 0;
+			}
+			break;
+
+		case OP_31_XOP_TLBSYNC:
+			break;
+
+		default:
+			/* Attempt core-specific emulation below. */
+			emulated = EMULATE_FAIL;
+		}
+		break;
+
+	case 0:
+		/*
+		 * Instruction with primary opcode 0. Based on PowerISA
+		 * these are illegal instructions.
+		 */
+		if (inst == KVMPPC_INST_SW_BREAKPOINT) {
+			vcpu->run->exit_reason = KVM_EXIT_DEBUG;
+			vcpu->run->debug.arch.status = 0;
+			vcpu->run->debug.arch.address = kvmppc_get_pc(vcpu);
+			emulated = EMULATE_EXIT_USER;
+			advance = 0;
+		} else
+			emulated = EMULATE_FAIL;
+
+		break;
+
+	default:
+		emulated = EMULATE_FAIL;
+	}
+
+	if (emulated == EMULATE_FAIL) {
+		emulated = vcpu->kvm->arch.kvm_ops->emulate_op(vcpu, inst,
+							       &advance);
+		if (emulated == EMULATE_AGAIN) {
+			advance = 0;
+		} else if (emulated == EMULATE_FAIL) {
+			advance = 0;
+			printk(KERN_ERR "Couldn't emulate instruction 0x%08x "
+			       "(op %d xop %d)\n", inst, get_op(inst), get_xop(inst));
+		}
+	}
+
+	trace_kvm_ppc_instr(inst, kvmppc_get_pc(vcpu), emulated);
+
+	/* Advance past emulated instruction. */
+	if (advance)
+		kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) + 4);
+
+	return emulated;
+}
+EXPORT_SYMBOL_GPL(kvmppc_emulate_instruction);