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, 261 insertions, 0 deletions

diff --git a/arch/arm64/include/asm/percpu.h b/arch/arm64/include/asm/percpu.h
new file mode 100644
index 000000000..b9ba19dbd
--- /dev/null
+++ b/arch/arm64/include/asm/percpu.h
@@ -0,0 +1,261 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2013 ARM Ltd.
+ */
+#ifndef __ASM_PERCPU_H
+#define __ASM_PERCPU_H
+
+#include <linux/preempt.h>
+
+#include <asm/alternative.h>
+#include <asm/cmpxchg.h>
+#include <asm/stack_pointer.h>
+#include <asm/sysreg.h>
+
+static inline void set_my_cpu_offset(unsigned long off)
+{
+	asm volatile(ALTERNATIVE("msr tpidr_el1, %0",
+				 "msr tpidr_el2, %0",
+				 ARM64_HAS_VIRT_HOST_EXTN)
+			:: "r" (off) : "memory");
+}
+
+static inline unsigned long __hyp_my_cpu_offset(void)
+{
+	/*
+	 * Non-VHE hyp code runs with preemption disabled. No need to hazard
+	 * the register access against barrier() as in __kern_my_cpu_offset.
+	 */
+	return read_sysreg(tpidr_el2);
+}
+
+static inline unsigned long __kern_my_cpu_offset(void)
+{
+	unsigned long off;
+
+	/*
+	 * We want to allow caching the value, so avoid using volatile and
+	 * instead use a fake stack read to hazard against barrier().
+	 */
+	asm(ALTERNATIVE("mrs %0, tpidr_el1",
+			"mrs %0, tpidr_el2",
+			ARM64_HAS_VIRT_HOST_EXTN)
+		: "=r" (off) :
+		"Q" (*(const unsigned long *)current_stack_pointer));
+
+	return off;
+}
+
+#ifdef __KVM_NVHE_HYPERVISOR__
+#define __my_cpu_offset __hyp_my_cpu_offset()
+#else
+#define __my_cpu_offset __kern_my_cpu_offset()
+#endif
+
+#define PERCPU_RW_OPS(sz)						\
+static inline unsigned long __percpu_read_##sz(void *ptr)		\
+{									\
+	return READ_ONCE(*(u##sz *)ptr);				\
+}									\
+									\
+static inline void __percpu_write_##sz(void *ptr, unsigned long val)	\
+{									\
+	WRITE_ONCE(*(u##sz *)ptr, (u##sz)val);				\
+}
+
+#define __PERCPU_OP_CASE(w, sfx, name, sz, op_llsc, op_lse)		\
+static inline void							\
+__percpu_##name##_case_##sz(void *ptr, unsigned long val)		\
+{									\
+	unsigned int loop;						\
+	u##sz tmp;							\
+									\
+	asm volatile (ARM64_LSE_ATOMIC_INSN(				\
+	/* LL/SC */							\
+	"1:	ldxr" #sfx "\t%" #w "[tmp], %[ptr]\n"			\
+		#op_llsc "\t%" #w "[tmp], %" #w "[tmp], %" #w "[val]\n"	\
+	"	stxr" #sfx "\t%w[loop], %" #w "[tmp], %[ptr]\n"		\
+	"	cbnz	%w[loop], 1b",					\
+	/* LSE atomics */						\
+		#op_lse "\t%" #w "[val], %[ptr]\n"			\
+		__nops(3))						\
+	: [loop] "=&r" (loop), [tmp] "=&r" (tmp),			\
+	  [ptr] "+Q"(*(u##sz *)ptr)					\
+	: [val] "r" ((u##sz)(val)));					\
+}
+
+#define __PERCPU_RET_OP_CASE(w, sfx, name, sz, op_llsc, op_lse)		\
+static inline u##sz							\
+__percpu_##name##_return_case_##sz(void *ptr, unsigned long val)	\
+{									\
+	unsigned int loop;						\
+	u##sz ret;							\
+									\
+	asm volatile (ARM64_LSE_ATOMIC_INSN(				\
+	/* LL/SC */							\
+	"1:	ldxr" #sfx "\t%" #w "[ret], %[ptr]\n"			\
+		#op_llsc "\t%" #w "[ret], %" #w "[ret], %" #w "[val]\n"	\
+	"	stxr" #sfx "\t%w[loop], %" #w "[ret], %[ptr]\n"		\
+	"	cbnz	%w[loop], 1b",					\
+	/* LSE atomics */						\
+		#op_lse "\t%" #w "[val], %" #w "[ret], %[ptr]\n"	\
+		#op_llsc "\t%" #w "[ret], %" #w "[ret], %" #w "[val]\n"	\
+		__nops(2))						\
+	: [loop] "=&r" (loop), [ret] "=&r" (ret),			\
+	  [ptr] "+Q"(*(u##sz *)ptr)					\
+	: [val] "r" ((u##sz)(val)));					\
+									\
+	return ret;							\
+}
+
+#define PERCPU_OP(name, op_llsc, op_lse)				\
+	__PERCPU_OP_CASE(w, b, name,  8, op_llsc, op_lse)		\
+	__PERCPU_OP_CASE(w, h, name, 16, op_llsc, op_lse)		\
+	__PERCPU_OP_CASE(w,  , name, 32, op_llsc, op_lse)		\
+	__PERCPU_OP_CASE( ,  , name, 64, op_llsc, op_lse)
+
+#define PERCPU_RET_OP(name, op_llsc, op_lse)				\
+	__PERCPU_RET_OP_CASE(w, b, name,  8, op_llsc, op_lse)		\
+	__PERCPU_RET_OP_CASE(w, h, name, 16, op_llsc, op_lse)		\
+	__PERCPU_RET_OP_CASE(w,  , name, 32, op_llsc, op_lse)		\
+	__PERCPU_RET_OP_CASE( ,  , name, 64, op_llsc, op_lse)
+
+PERCPU_RW_OPS(8)
+PERCPU_RW_OPS(16)
+PERCPU_RW_OPS(32)
+PERCPU_RW_OPS(64)
+PERCPU_OP(add, add, stadd)
+PERCPU_OP(andnot, bic, stclr)
+PERCPU_OP(or, orr, stset)
+PERCPU_RET_OP(add, add, ldadd)
+
+#undef PERCPU_RW_OPS
+#undef __PERCPU_OP_CASE
+#undef __PERCPU_RET_OP_CASE
+#undef PERCPU_OP
+#undef PERCPU_RET_OP
+
+/*
+ * It would be nice to avoid the conditional call into the scheduler when
+ * re-enabling preemption for preemptible kernels, but doing that in a way
+ * which builds inside a module would mean messing directly with the preempt
+ * count. If you do this, peterz and tglx will hunt you down.
+ */
+#define this_cpu_cmpxchg_double_8(ptr1, ptr2, o1, o2, n1, n2)		\
+({									\
+	int __ret;							\
+	preempt_disable_notrace();					\
+	__ret = cmpxchg_double_local(	raw_cpu_ptr(&(ptr1)),		\
+					raw_cpu_ptr(&(ptr2)),		\
+					o1, o2, n1, n2);		\
+	preempt_enable_notrace();					\
+	__ret;								\
+})
+
+#define _pcp_protect(op, pcp, ...)					\
+({									\
+	preempt_disable_notrace();					\
+	op(raw_cpu_ptr(&(pcp)), __VA_ARGS__);				\
+	preempt_enable_notrace();					\
+})
+
+#define _pcp_protect_return(op, pcp, args...)				\
+({									\
+	typeof(pcp) __retval;						\
+	preempt_disable_notrace();					\
+	__retval = (typeof(pcp))op(raw_cpu_ptr(&(pcp)), ##args);	\
+	preempt_enable_notrace();					\
+	__retval;							\
+})
+
+#define this_cpu_read_1(pcp)		\
+	_pcp_protect_return(__percpu_read_8, pcp)
+#define this_cpu_read_2(pcp)		\
+	_pcp_protect_return(__percpu_read_16, pcp)
+#define this_cpu_read_4(pcp)		\
+	_pcp_protect_return(__percpu_read_32, pcp)
+#define this_cpu_read_8(pcp)		\
+	_pcp_protect_return(__percpu_read_64, pcp)
+
+#define this_cpu_write_1(pcp, val)	\
+	_pcp_protect(__percpu_write_8, pcp, (unsigned long)val)
+#define this_cpu_write_2(pcp, val)	\
+	_pcp_protect(__percpu_write_16, pcp, (unsigned long)val)
+#define this_cpu_write_4(pcp, val)	\
+	_pcp_protect(__percpu_write_32, pcp, (unsigned long)val)
+#define this_cpu_write_8(pcp, val)	\
+	_pcp_protect(__percpu_write_64, pcp, (unsigned long)val)
+
+#define this_cpu_add_1(pcp, val)	\
+	_pcp_protect(__percpu_add_case_8, pcp, val)
+#define this_cpu_add_2(pcp, val)	\
+	_pcp_protect(__percpu_add_case_16, pcp, val)
+#define this_cpu_add_4(pcp, val)	\
+	_pcp_protect(__percpu_add_case_32, pcp, val)
+#define this_cpu_add_8(pcp, val)	\
+	_pcp_protect(__percpu_add_case_64, pcp, val)
+
+#define this_cpu_add_return_1(pcp, val)	\
+	_pcp_protect_return(__percpu_add_return_case_8, pcp, val)
+#define this_cpu_add_return_2(pcp, val)	\
+	_pcp_protect_return(__percpu_add_return_case_16, pcp, val)
+#define this_cpu_add_return_4(pcp, val)	\
+	_pcp_protect_return(__percpu_add_return_case_32, pcp, val)
+#define this_cpu_add_return_8(pcp, val)	\
+	_pcp_protect_return(__percpu_add_return_case_64, pcp, val)
+
+#define this_cpu_and_1(pcp, val)	\
+	_pcp_protect(__percpu_andnot_case_8, pcp, ~val)
+#define this_cpu_and_2(pcp, val)	\
+	_pcp_protect(__percpu_andnot_case_16, pcp, ~val)
+#define this_cpu_and_4(pcp, val)	\
+	_pcp_protect(__percpu_andnot_case_32, pcp, ~val)
+#define this_cpu_and_8(pcp, val)	\
+	_pcp_protect(__percpu_andnot_case_64, pcp, ~val)
+
+#define this_cpu_or_1(pcp, val)		\
+	_pcp_protect(__percpu_or_case_8, pcp, val)
+#define this_cpu_or_2(pcp, val)		\
+	_pcp_protect(__percpu_or_case_16, pcp, val)
+#define this_cpu_or_4(pcp, val)		\
+	_pcp_protect(__percpu_or_case_32, pcp, val)
+#define this_cpu_or_8(pcp, val)		\
+	_pcp_protect(__percpu_or_case_64, pcp, val)
+
+#define this_cpu_xchg_1(pcp, val)	\
+	_pcp_protect_return(xchg_relaxed, pcp, val)
+#define this_cpu_xchg_2(pcp, val)	\
+	_pcp_protect_return(xchg_relaxed, pcp, val)
+#define this_cpu_xchg_4(pcp, val)	\
+	_pcp_protect_return(xchg_relaxed, pcp, val)
+#define this_cpu_xchg_8(pcp, val)	\
+	_pcp_protect_return(xchg_relaxed, pcp, val)
+
+#define this_cpu_cmpxchg_1(pcp, o, n)	\
+	_pcp_protect_return(cmpxchg_relaxed, pcp, o, n)
+#define this_cpu_cmpxchg_2(pcp, o, n)	\
+	_pcp_protect_return(cmpxchg_relaxed, pcp, o, n)
+#define this_cpu_cmpxchg_4(pcp, o, n)	\
+	_pcp_protect_return(cmpxchg_relaxed, pcp, o, n)
+#define this_cpu_cmpxchg_8(pcp, o, n)	\
+	_pcp_protect_return(cmpxchg_relaxed, pcp, o, n)
+
+#ifdef __KVM_NVHE_HYPERVISOR__
+extern unsigned long __hyp_per_cpu_offset(unsigned int cpu);
+#define __per_cpu_offset
+#define per_cpu_offset(cpu)	__hyp_per_cpu_offset((cpu))
+#endif
+
+#include <asm-generic/percpu.h>
+
+/* Redefine macros for nVHE hyp under DEBUG_PREEMPT to avoid its dependencies. */
+#if defined(__KVM_NVHE_HYPERVISOR__) && defined(CONFIG_DEBUG_PREEMPT)
+#undef	this_cpu_ptr
+#define	this_cpu_ptr		raw_cpu_ptr
+#undef	__this_cpu_read
+#define	__this_cpu_read		raw_cpu_read
+#undef	__this_cpu_write
+#define	__this_cpu_write	raw_cpu_write
+#endif
+
+#endif /* __ASM_PERCPU_H */