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, 342 insertions, 0 deletions

diff --git a/arch/x86/include/asm/atomic64_32.h b/arch/x86/include/asm/atomic64_32.h
new file mode 100644
index 000000000..808b4eece
--- /dev/null
+++ b/arch/x86/include/asm/atomic64_32.h
@@ -0,0 +1,342 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_ATOMIC64_32_H
+#define _ASM_X86_ATOMIC64_32_H
+
+#include <linux/compiler.h>
+#include <linux/types.h>
+//#include <asm/cmpxchg.h>
+
+/* An 64bit atomic type */
+
+typedef struct {
+	s64 __aligned(8) counter;
+} atomic64_t;
+
+#define ATOMIC64_INIT(val)	{ (val) }
+
+#define __ATOMIC64_DECL(sym) void atomic64_##sym(atomic64_t *, ...)
+#ifndef ATOMIC64_EXPORT
+#define ATOMIC64_DECL_ONE __ATOMIC64_DECL
+#else
+#define ATOMIC64_DECL_ONE(sym) __ATOMIC64_DECL(sym); \
+	ATOMIC64_EXPORT(atomic64_##sym)
+#endif
+
+#ifdef CONFIG_X86_CMPXCHG64
+#define __alternative_atomic64(f, g, out, in...) \
+	asm volatile("call %P[func]" \
+		     : out : [func] "i" (atomic64_##g##_cx8), ## in)
+
+#define ATOMIC64_DECL(sym) ATOMIC64_DECL_ONE(sym##_cx8)
+#else
+#define __alternative_atomic64(f, g, out, in...) \
+	alternative_call(atomic64_##f##_386, atomic64_##g##_cx8, \
+			 X86_FEATURE_CX8, ASM_OUTPUT2(out), ## in)
+
+#define ATOMIC64_DECL(sym) ATOMIC64_DECL_ONE(sym##_cx8); \
+	ATOMIC64_DECL_ONE(sym##_386)
+
+ATOMIC64_DECL_ONE(add_386);
+ATOMIC64_DECL_ONE(sub_386);
+ATOMIC64_DECL_ONE(inc_386);
+ATOMIC64_DECL_ONE(dec_386);
+#endif
+
+#define alternative_atomic64(f, out, in...) \
+	__alternative_atomic64(f, f, ASM_OUTPUT2(out), ## in)
+
+ATOMIC64_DECL(read);
+ATOMIC64_DECL(set);
+ATOMIC64_DECL(xchg);
+ATOMIC64_DECL(add_return);
+ATOMIC64_DECL(sub_return);
+ATOMIC64_DECL(inc_return);
+ATOMIC64_DECL(dec_return);
+ATOMIC64_DECL(dec_if_positive);
+ATOMIC64_DECL(inc_not_zero);
+ATOMIC64_DECL(add_unless);
+
+#undef ATOMIC64_DECL
+#undef ATOMIC64_DECL_ONE
+#undef __ATOMIC64_DECL
+#undef ATOMIC64_EXPORT
+
+/**
+ * arch_atomic64_cmpxchg - cmpxchg atomic64 variable
+ * @v: pointer to type atomic64_t
+ * @o: expected value
+ * @n: new value
+ *
+ * Atomically sets @v to @n if it was equal to @o and returns
+ * the old value.
+ */
+
+static __always_inline s64 arch_atomic64_cmpxchg(atomic64_t *v, s64 o, s64 n)
+{
+	return arch_cmpxchg64(&v->counter, o, n);
+}
+#define arch_atomic64_cmpxchg arch_atomic64_cmpxchg
+
+/**
+ * arch_atomic64_xchg - xchg atomic64 variable
+ * @v: pointer to type atomic64_t
+ * @n: value to assign
+ *
+ * Atomically xchgs the value of @v to @n and returns
+ * the old value.
+ */
+static __always_inline s64 arch_atomic64_xchg(atomic64_t *v, s64 n)
+{
+	s64 o;
+	unsigned high = (unsigned)(n >> 32);
+	unsigned low = (unsigned)n;
+	alternative_atomic64(xchg, "=&A" (o),
+			     "S" (v), "b" (low), "c" (high)
+			     : "memory");
+	return o;
+}
+#define arch_atomic64_xchg arch_atomic64_xchg
+
+/**
+ * arch_atomic64_set - set atomic64 variable
+ * @v: pointer to type atomic64_t
+ * @i: value to assign
+ *
+ * Atomically sets the value of @v to @n.
+ */
+static __always_inline void arch_atomic64_set(atomic64_t *v, s64 i)
+{
+	unsigned high = (unsigned)(i >> 32);
+	unsigned low = (unsigned)i;
+	alternative_atomic64(set, /* no output */,
+			     "S" (v), "b" (low), "c" (high)
+			     : "eax", "edx", "memory");
+}
+
+/**
+ * arch_atomic64_read - read atomic64 variable
+ * @v: pointer to type atomic64_t
+ *
+ * Atomically reads the value of @v and returns it.
+ */
+static __always_inline s64 arch_atomic64_read(const atomic64_t *v)
+{
+	s64 r;
+	alternative_atomic64(read, "=&A" (r), "c" (v) : "memory");
+	return r;
+}
+
+/**
+ * arch_atomic64_add_return - add and return
+ * @i: integer value to add
+ * @v: pointer to type atomic64_t
+ *
+ * Atomically adds @i to @v and returns @i + *@v
+ */
+static __always_inline s64 arch_atomic64_add_return(s64 i, atomic64_t *v)
+{
+	alternative_atomic64(add_return,
+			     ASM_OUTPUT2("+A" (i), "+c" (v)),
+			     ASM_NO_INPUT_CLOBBER("memory"));
+	return i;
+}
+#define arch_atomic64_add_return arch_atomic64_add_return
+
+/*
+ * Other variants with different arithmetic operators:
+ */
+static __always_inline s64 arch_atomic64_sub_return(s64 i, atomic64_t *v)
+{
+	alternative_atomic64(sub_return,
+			     ASM_OUTPUT2("+A" (i), "+c" (v)),
+			     ASM_NO_INPUT_CLOBBER("memory"));
+	return i;
+}
+#define arch_atomic64_sub_return arch_atomic64_sub_return
+
+static __always_inline s64 arch_atomic64_inc_return(atomic64_t *v)
+{
+	s64 a;
+	alternative_atomic64(inc_return, "=&A" (a),
+			     "S" (v) : "memory", "ecx");
+	return a;
+}
+#define arch_atomic64_inc_return arch_atomic64_inc_return
+
+static __always_inline s64 arch_atomic64_dec_return(atomic64_t *v)
+{
+	s64 a;
+	alternative_atomic64(dec_return, "=&A" (a),
+			     "S" (v) : "memory", "ecx");
+	return a;
+}
+#define arch_atomic64_dec_return arch_atomic64_dec_return
+
+/**
+ * arch_atomic64_add - add integer to atomic64 variable
+ * @i: integer value to add
+ * @v: pointer to type atomic64_t
+ *
+ * Atomically adds @i to @v.
+ */
+static __always_inline s64 arch_atomic64_add(s64 i, atomic64_t *v)
+{
+	__alternative_atomic64(add, add_return,
+			       ASM_OUTPUT2("+A" (i), "+c" (v)),
+			       ASM_NO_INPUT_CLOBBER("memory"));
+	return i;
+}
+
+/**
+ * arch_atomic64_sub - subtract the atomic64 variable
+ * @i: integer value to subtract
+ * @v: pointer to type atomic64_t
+ *
+ * Atomically subtracts @i from @v.
+ */
+static __always_inline s64 arch_atomic64_sub(s64 i, atomic64_t *v)
+{
+	__alternative_atomic64(sub, sub_return,
+			       ASM_OUTPUT2("+A" (i), "+c" (v)),
+			       ASM_NO_INPUT_CLOBBER("memory"));
+	return i;
+}
+
+/**
+ * arch_atomic64_inc - increment atomic64 variable
+ * @v: pointer to type atomic64_t
+ *
+ * Atomically increments @v by 1.
+ */
+static __always_inline void arch_atomic64_inc(atomic64_t *v)
+{
+	__alternative_atomic64(inc, inc_return, /* no output */,
+			       "S" (v) : "memory", "eax", "ecx", "edx");
+}
+#define arch_atomic64_inc arch_atomic64_inc
+
+/**
+ * arch_atomic64_dec - decrement atomic64 variable
+ * @v: pointer to type atomic64_t
+ *
+ * Atomically decrements @v by 1.
+ */
+static __always_inline void arch_atomic64_dec(atomic64_t *v)
+{
+	__alternative_atomic64(dec, dec_return, /* no output */,
+			       "S" (v) : "memory", "eax", "ecx", "edx");
+}
+#define arch_atomic64_dec arch_atomic64_dec
+
+/**
+ * arch_atomic64_add_unless - add unless the number is a given value
+ * @v: pointer of type atomic64_t
+ * @a: the amount to add to v...
+ * @u: ...unless v is equal to u.
+ *
+ * Atomically adds @a to @v, so long as it was not @u.
+ * Returns non-zero if the add was done, zero otherwise.
+ */
+static __always_inline int arch_atomic64_add_unless(atomic64_t *v, s64 a, s64 u)
+{
+	unsigned low = (unsigned)u;
+	unsigned high = (unsigned)(u >> 32);
+	alternative_atomic64(add_unless,
+			     ASM_OUTPUT2("+A" (a), "+c" (low), "+D" (high)),
+			     "S" (v) : "memory");
+	return (int)a;
+}
+#define arch_atomic64_add_unless arch_atomic64_add_unless
+
+static __always_inline int arch_atomic64_inc_not_zero(atomic64_t *v)
+{
+	int r;
+	alternative_atomic64(inc_not_zero, "=&a" (r),
+			     "S" (v) : "ecx", "edx", "memory");
+	return r;
+}
+#define arch_atomic64_inc_not_zero arch_atomic64_inc_not_zero
+
+static __always_inline s64 arch_atomic64_dec_if_positive(atomic64_t *v)
+{
+	s64 r;
+	alternative_atomic64(dec_if_positive, "=&A" (r),
+			     "S" (v) : "ecx", "memory");
+	return r;
+}
+#define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
+
+#undef alternative_atomic64
+#undef __alternative_atomic64
+
+static __always_inline void arch_atomic64_and(s64 i, atomic64_t *v)
+{
+	s64 old, c = 0;
+
+	while ((old = arch_atomic64_cmpxchg(v, c, c & i)) != c)
+		c = old;
+}
+
+static __always_inline s64 arch_atomic64_fetch_and(s64 i, atomic64_t *v)
+{
+	s64 old, c = 0;
+
+	while ((old = arch_atomic64_cmpxchg(v, c, c & i)) != c)
+		c = old;
+
+	return old;
+}
+#define arch_atomic64_fetch_and arch_atomic64_fetch_and
+
+static __always_inline void arch_atomic64_or(s64 i, atomic64_t *v)
+{
+	s64 old, c = 0;
+
+	while ((old = arch_atomic64_cmpxchg(v, c, c | i)) != c)
+		c = old;
+}
+
+static __always_inline s64 arch_atomic64_fetch_or(s64 i, atomic64_t *v)
+{
+	s64 old, c = 0;
+
+	while ((old = arch_atomic64_cmpxchg(v, c, c | i)) != c)
+		c = old;
+
+	return old;
+}
+#define arch_atomic64_fetch_or arch_atomic64_fetch_or
+
+static __always_inline void arch_atomic64_xor(s64 i, atomic64_t *v)
+{
+	s64 old, c = 0;
+
+	while ((old = arch_atomic64_cmpxchg(v, c, c ^ i)) != c)
+		c = old;
+}
+
+static __always_inline s64 arch_atomic64_fetch_xor(s64 i, atomic64_t *v)
+{
+	s64 old, c = 0;
+
+	while ((old = arch_atomic64_cmpxchg(v, c, c ^ i)) != c)
+		c = old;
+
+	return old;
+}
+#define arch_atomic64_fetch_xor arch_atomic64_fetch_xor
+
+static __always_inline s64 arch_atomic64_fetch_add(s64 i, atomic64_t *v)
+{
+	s64 old, c = 0;
+
+	while ((old = arch_atomic64_cmpxchg(v, c, c + i)) != c)
+		c = old;
+
+	return old;
+}
+#define arch_atomic64_fetch_add arch_atomic64_fetch_add
+
+#define arch_atomic64_fetch_sub(i, v)	arch_atomic64_fetch_add(-(i), (v))
+
+#endif /* _ASM_X86_ATOMIC64_32_H */