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, 513 insertions, 0 deletions

diff --git a/tools/testing/selftests/bpf/sdt.h b/tools/testing/selftests/bpf/sdt.h
new file mode 100644
index 000000000..ca0162b4d
--- /dev/null
+++ b/tools/testing/selftests/bpf/sdt.h
@@ -0,0 +1,513 @@
+/* <sys/sdt.h> - Systemtap static probe definition macros.
+
+   This file is dedicated to the public domain, pursuant to CC0
+   (https://creativecommons.org/publicdomain/zero/1.0/)
+*/
+
+#ifndef _SYS_SDT_H
+#define _SYS_SDT_H    1
+
+/*
+  This file defines a family of macros
+
+       STAP_PROBEn(op1, ..., opn)
+
+  that emit a nop into the instruction stream, and some data into an auxiliary
+  note section.  The data in the note section describes the operands, in terms
+  of size and location.  Each location is encoded as assembler operand string.
+  Consumer tools such as gdb or systemtap insert breakpoints on top of
+  the nop, and decode the location operand-strings, like an assembler,
+  to find the values being passed.
+
+  The operand strings are selected by the compiler for each operand.
+  They are constrained by gcc inline-assembler codes.  The default is:
+
+  #define STAP_SDT_ARG_CONSTRAINT nor
+
+  This is a good default if the operands tend to be integral and
+  moderate in number (smaller than number of registers).  In other
+  cases, the compiler may report "'asm' requires impossible reload" or
+  similar.  In this case, consider simplifying the macro call (fewer
+  and simpler operands), reduce optimization, or override the default
+  constraints string via:
+
+  #define STAP_SDT_ARG_CONSTRAINT g
+  #include <sys/sdt.h>
+
+  See also:
+  https://sourceware.org/systemtap/wiki/UserSpaceProbeImplementation
+  https://gcc.gnu.org/onlinedocs/gcc/Constraints.html
+ */
+
+
+
+#ifdef __ASSEMBLER__
+# define _SDT_PROBE(provider, name, n, arglist)	\
+  _SDT_ASM_BODY(provider, name, _SDT_ASM_SUBSTR_1, (_SDT_DEPAREN_##n arglist)) \
+  _SDT_ASM_BASE
+# define _SDT_ASM_1(x)			x;
+# define _SDT_ASM_2(a, b)		a,b;
+# define _SDT_ASM_3(a, b, c)		a,b,c;
+# define _SDT_ASM_5(a, b, c, d, e)	a,b,c,d,e;
+# define _SDT_ASM_STRING_1(x)		.asciz #x;
+# define _SDT_ASM_SUBSTR_1(x)		.ascii #x;
+# define _SDT_DEPAREN_0()				/* empty */
+# define _SDT_DEPAREN_1(a)				a
+# define _SDT_DEPAREN_2(a,b)				a b
+# define _SDT_DEPAREN_3(a,b,c)				a b c
+# define _SDT_DEPAREN_4(a,b,c,d)			a b c d
+# define _SDT_DEPAREN_5(a,b,c,d,e)			a b c d e
+# define _SDT_DEPAREN_6(a,b,c,d,e,f)			a b c d e f
+# define _SDT_DEPAREN_7(a,b,c,d,e,f,g)			a b c d e f g
+# define _SDT_DEPAREN_8(a,b,c,d,e,f,g,h)		a b c d e f g h
+# define _SDT_DEPAREN_9(a,b,c,d,e,f,g,h,i)		a b c d e f g h i
+# define _SDT_DEPAREN_10(a,b,c,d,e,f,g,h,i,j)		a b c d e f g h i j
+# define _SDT_DEPAREN_11(a,b,c,d,e,f,g,h,i,j,k)		a b c d e f g h i j k
+# define _SDT_DEPAREN_12(a,b,c,d,e,f,g,h,i,j,k,l)	a b c d e f g h i j k l
+#else
+#if defined _SDT_HAS_SEMAPHORES
+#define _SDT_NOTE_SEMAPHORE_USE(provider, name) \
+  __asm__ __volatile__ ("" :: "m" (provider##_##name##_semaphore));
+#else
+#define _SDT_NOTE_SEMAPHORE_USE(provider, name)
+#endif
+
+# define _SDT_PROBE(provider, name, n, arglist) \
+  do {									    \
+    _SDT_NOTE_SEMAPHORE_USE(provider, name); \
+    __asm__ __volatile__ (_SDT_ASM_BODY(provider, name, _SDT_ASM_ARGS, (n)) \
+			  :: _SDT_ASM_OPERANDS_##n arglist);		    \
+    __asm__ __volatile__ (_SDT_ASM_BASE);				    \
+  } while (0)
+# define _SDT_S(x)			#x
+# define _SDT_ASM_1(x)			_SDT_S(x) "\n"
+# define _SDT_ASM_2(a, b)		_SDT_S(a) "," _SDT_S(b) "\n"
+# define _SDT_ASM_3(a, b, c)		_SDT_S(a) "," _SDT_S(b) "," \
+					_SDT_S(c) "\n"
+# define _SDT_ASM_5(a, b, c, d, e)	_SDT_S(a) "," _SDT_S(b) "," \
+					_SDT_S(c) "," _SDT_S(d) "," \
+					_SDT_S(e) "\n"
+# define _SDT_ASM_ARGS(n)		_SDT_ASM_TEMPLATE_##n
+# define _SDT_ASM_STRING_1(x)		_SDT_ASM_1(.asciz #x)
+# define _SDT_ASM_SUBSTR_1(x)		_SDT_ASM_1(.ascii #x)
+
+# define _SDT_ARGFMT(no)                _SDT_ASM_1(_SDT_SIGN %n[_SDT_S##no]) \
+                                        _SDT_ASM_1(_SDT_SIZE %n[_SDT_S##no]) \
+                                        _SDT_ASM_1(_SDT_TYPE %n[_SDT_S##no]) \
+                                        _SDT_ASM_SUBSTR(_SDT_ARGTMPL(_SDT_A##no))
+
+
+# ifndef STAP_SDT_ARG_CONSTRAINT
+# if defined __powerpc__
+# define STAP_SDT_ARG_CONSTRAINT        nZr
+# elif defined __arm__
+# define STAP_SDT_ARG_CONSTRAINT        g
+# else
+# define STAP_SDT_ARG_CONSTRAINT        nor
+# endif
+# endif
+
+# define _SDT_STRINGIFY(x)              #x
+# define _SDT_ARG_CONSTRAINT_STRING(x)  _SDT_STRINGIFY(x)
+/* _SDT_S encodes the size and type as 0xSSTT which is decoded by the assembler
+   macros _SDT_SIZE and _SDT_TYPE */
+# define _SDT_ARG(n, x)				    \
+  [_SDT_S##n] "n" ((_SDT_ARGSIGNED (x) ? (int)-1 : 1) * (-(((int) _SDT_ARGSIZE (x)) << 8) + (-(0x7f & __builtin_classify_type (x))))), \
+  [_SDT_A##n] _SDT_ARG_CONSTRAINT_STRING (STAP_SDT_ARG_CONSTRAINT) (_SDT_ARGVAL (x))
+#endif
+#define _SDT_ASM_STRING(x)		_SDT_ASM_STRING_1(x)
+#define _SDT_ASM_SUBSTR(x)		_SDT_ASM_SUBSTR_1(x)
+
+#define _SDT_ARGARRAY(x)	(__builtin_classify_type (x) == 14	\
+				 || __builtin_classify_type (x) == 5)
+
+#ifdef __cplusplus
+# define _SDT_ARGSIGNED(x)	(!_SDT_ARGARRAY (x) \
+				 && __sdt_type<__typeof (x)>::__sdt_signed)
+# define _SDT_ARGSIZE(x)	(_SDT_ARGARRAY (x) \
+				 ? sizeof (void *) : sizeof (x))
+# define _SDT_ARGVAL(x)		(x)
+
+# include <cstddef>
+
+template<typename __sdt_T>
+struct __sdt_type
+{
+  static const bool __sdt_signed = false;
+};
+  
+#define __SDT_ALWAYS_SIGNED(T) \
+template<> struct __sdt_type<T> { static const bool __sdt_signed = true; };
+#define __SDT_COND_SIGNED(T,CT)						\
+template<> struct __sdt_type<T> { static const bool __sdt_signed = ((CT)(-1) < 1); };
+__SDT_ALWAYS_SIGNED(signed char)
+__SDT_ALWAYS_SIGNED(short)
+__SDT_ALWAYS_SIGNED(int)
+__SDT_ALWAYS_SIGNED(long)
+__SDT_ALWAYS_SIGNED(long long)
+__SDT_ALWAYS_SIGNED(volatile signed char)
+__SDT_ALWAYS_SIGNED(volatile short)
+__SDT_ALWAYS_SIGNED(volatile int)
+__SDT_ALWAYS_SIGNED(volatile long)
+__SDT_ALWAYS_SIGNED(volatile long long)
+__SDT_ALWAYS_SIGNED(const signed char)
+__SDT_ALWAYS_SIGNED(const short)
+__SDT_ALWAYS_SIGNED(const int)
+__SDT_ALWAYS_SIGNED(const long)
+__SDT_ALWAYS_SIGNED(const long long)
+__SDT_ALWAYS_SIGNED(const volatile signed char)
+__SDT_ALWAYS_SIGNED(const volatile short)
+__SDT_ALWAYS_SIGNED(const volatile int)
+__SDT_ALWAYS_SIGNED(const volatile long)
+__SDT_ALWAYS_SIGNED(const volatile long long)
+__SDT_COND_SIGNED(char, char)
+__SDT_COND_SIGNED(wchar_t, wchar_t)
+__SDT_COND_SIGNED(volatile char, char)
+__SDT_COND_SIGNED(volatile wchar_t, wchar_t)
+__SDT_COND_SIGNED(const char, char)
+__SDT_COND_SIGNED(const wchar_t, wchar_t)
+__SDT_COND_SIGNED(const volatile char, char)
+__SDT_COND_SIGNED(const volatile wchar_t, wchar_t)
+#if defined (__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+/* __SDT_COND_SIGNED(char16_t) */
+/* __SDT_COND_SIGNED(char32_t) */
+#endif
+
+template<typename __sdt_E>
+struct __sdt_type<__sdt_E[]> : public __sdt_type<__sdt_E *> {};
+
+template<typename __sdt_E, size_t __sdt_N>
+struct __sdt_type<__sdt_E[__sdt_N]> : public __sdt_type<__sdt_E *> {};
+
+#elif !defined(__ASSEMBLER__)
+__extension__ extern unsigned long long __sdt_unsp;
+# define _SDT_ARGINTTYPE(x)						\
+  __typeof (__builtin_choose_expr (((__builtin_classify_type (x)	\
+				     + 3) & -4) == 4, (x), 0U))
+# define _SDT_ARGSIGNED(x)						\
+  (!__extension__							\
+   (__builtin_constant_p ((((unsigned long long)			\
+			    (_SDT_ARGINTTYPE (x)) __sdt_unsp)		\
+			   & ((unsigned long long)1 << (sizeof (unsigned long long)	\
+				       * __CHAR_BIT__ - 1))) == 0)	\
+    || (_SDT_ARGINTTYPE (x)) -1 > (_SDT_ARGINTTYPE (x)) 0))
+# define _SDT_ARGSIZE(x)	\
+  (_SDT_ARGARRAY (x) ? sizeof (void *) : sizeof (x))
+# define _SDT_ARGVAL(x)		(x)
+#endif
+
+#if defined __powerpc__ || defined __powerpc64__
+# define _SDT_ARGTMPL(id)	%I[id]%[id]
+#elif defined __i386__
+# define _SDT_ARGTMPL(id)	%k[id]  /* gcc.gnu.org/PR80115 sourceware.org/PR24541 */
+#else
+# define _SDT_ARGTMPL(id)	%[id]
+#endif
+
+/* NB: gdb PR24541 highlighted an unspecified corner of the sdt.h
+   operand note format.
+
+   The named register may be a longer or shorter (!) alias for the
+   storage where the value in question is found.  For example, on
+   i386, 64-bit value may be put in register pairs, and the register
+   name stored would identify just one of them.  Previously, gcc was
+   asked to emit the %w[id] (16-bit alias of some registers holding
+   operands), even when a wider 32-bit value was used.
+
+   Bottom line: the byte-width given before the @ sign governs.  If
+   there is a mismatch between that width and that of the named
+   register, then a sys/sdt.h note consumer may need to employ
+   architecture-specific heuristics to figure out where the compiler
+   has actually put the complete value.
+*/
+
+#ifdef __LP64__
+# define _SDT_ASM_ADDR	.8byte
+#else
+# define _SDT_ASM_ADDR	.4byte
+#endif
+
+/* The ia64 and s390 nop instructions take an argument. */
+#if defined(__ia64__) || defined(__s390__) || defined(__s390x__)
+#define _SDT_NOP	nop 0
+#else
+#define _SDT_NOP	nop
+#endif
+
+#define _SDT_NOTE_NAME	"stapsdt"
+#define _SDT_NOTE_TYPE	3
+
+/* If the assembler supports the necessary feature, then we can play
+   nice with code in COMDAT sections, which comes up in C++ code.
+   Without that assembler support, some combinations of probe placements
+   in certain kinds of C++ code may produce link-time errors.  */
+#include "sdt-config.h"
+#if _SDT_ASM_SECTION_AUTOGROUP_SUPPORT
+# define _SDT_ASM_AUTOGROUP "?"
+#else
+# define _SDT_ASM_AUTOGROUP ""
+#endif
+
+#define _SDT_DEF_MACROS							     \
+	_SDT_ASM_1(.altmacro)						     \
+	_SDT_ASM_1(.macro _SDT_SIGN x)				     	     \
+	_SDT_ASM_3(.pushsection .note.stapsdt,"","note")		     \
+	_SDT_ASM_1(.iflt \\x)						     \
+	_SDT_ASM_1(.ascii "-")						     \
+	_SDT_ASM_1(.endif)						     \
+	_SDT_ASM_1(.popsection)						     \
+	_SDT_ASM_1(.endm)						     \
+	_SDT_ASM_1(.macro _SDT_SIZE_ x)					     \
+	_SDT_ASM_3(.pushsection .note.stapsdt,"","note")		     \
+	_SDT_ASM_1(.ascii "\x")						     \
+	_SDT_ASM_1(.popsection)						     \
+	_SDT_ASM_1(.endm)						     \
+	_SDT_ASM_1(.macro _SDT_SIZE x)					     \
+	_SDT_ASM_1(_SDT_SIZE_ %%((-(-\\x*((-\\x>0)-(-\\x<0))))>>8))	     \
+	_SDT_ASM_1(.endm)						     \
+	_SDT_ASM_1(.macro _SDT_TYPE_ x)				             \
+	_SDT_ASM_3(.pushsection .note.stapsdt,"","note")		     \
+	_SDT_ASM_2(.ifc 8,\\x)					     	     \
+	_SDT_ASM_1(.ascii "f")						     \
+	_SDT_ASM_1(.endif)						     \
+	_SDT_ASM_1(.ascii "@")						     \
+	_SDT_ASM_1(.popsection)						     \
+	_SDT_ASM_1(.endm)						     \
+	_SDT_ASM_1(.macro _SDT_TYPE x)				     	     \
+	_SDT_ASM_1(_SDT_TYPE_ %%((\\x)&(0xff)))			     \
+	_SDT_ASM_1(.endm)
+
+#define _SDT_UNDEF_MACROS						      \
+  _SDT_ASM_1(.purgem _SDT_SIGN)						      \
+  _SDT_ASM_1(.purgem _SDT_SIZE_)					      \
+  _SDT_ASM_1(.purgem _SDT_SIZE)						      \
+  _SDT_ASM_1(.purgem _SDT_TYPE_)					      \
+  _SDT_ASM_1(.purgem _SDT_TYPE)
+
+#define _SDT_ASM_BODY(provider, name, pack_args, args, ...)		      \
+  _SDT_DEF_MACROS							      \
+  _SDT_ASM_1(990:	_SDT_NOP)					      \
+  _SDT_ASM_3(		.pushsection .note.stapsdt,_SDT_ASM_AUTOGROUP,"note") \
+  _SDT_ASM_1(		.balign 4)					      \
+  _SDT_ASM_3(		.4byte 992f-991f, 994f-993f, _SDT_NOTE_TYPE)	      \
+  _SDT_ASM_1(991:	.asciz _SDT_NOTE_NAME)				      \
+  _SDT_ASM_1(992:	.balign 4)					      \
+  _SDT_ASM_1(993:	_SDT_ASM_ADDR 990b)				      \
+  _SDT_ASM_1(		_SDT_ASM_ADDR _.stapsdt.base)			      \
+  _SDT_SEMAPHORE(provider,name)						      \
+  _SDT_ASM_STRING(provider)						      \
+  _SDT_ASM_STRING(name)							      \
+  pack_args args							      \
+  _SDT_ASM_SUBSTR(\x00)							      \
+  _SDT_UNDEF_MACROS							      \
+  _SDT_ASM_1(994:	.balign 4)					      \
+  _SDT_ASM_1(		.popsection)
+
+#define _SDT_ASM_BASE							      \
+  _SDT_ASM_1(.ifndef _.stapsdt.base)					      \
+  _SDT_ASM_5(		.pushsection .stapsdt.base,"aG","progbits",	      \
+							.stapsdt.base,comdat) \
+  _SDT_ASM_1(		.weak _.stapsdt.base)				      \
+  _SDT_ASM_1(		.hidden _.stapsdt.base)				      \
+  _SDT_ASM_1(	_.stapsdt.base: .space 1)				      \
+  _SDT_ASM_2(		.size _.stapsdt.base, 1)			      \
+  _SDT_ASM_1(		.popsection)					      \
+  _SDT_ASM_1(.endif)
+
+#if defined _SDT_HAS_SEMAPHORES
+#define _SDT_SEMAPHORE(p,n) \
+	_SDT_ASM_1(		_SDT_ASM_ADDR p##_##n##_semaphore)
+#else
+#define _SDT_SEMAPHORE(p,n) _SDT_ASM_1(		_SDT_ASM_ADDR 0)
+#endif
+
+#define _SDT_ASM_BLANK _SDT_ASM_SUBSTR(\x20)
+#define _SDT_ASM_TEMPLATE_0		/* no arguments */
+#define _SDT_ASM_TEMPLATE_1		_SDT_ARGFMT(1)
+#define _SDT_ASM_TEMPLATE_2		_SDT_ASM_TEMPLATE_1 _SDT_ASM_BLANK _SDT_ARGFMT(2)
+#define _SDT_ASM_TEMPLATE_3		_SDT_ASM_TEMPLATE_2 _SDT_ASM_BLANK _SDT_ARGFMT(3)
+#define _SDT_ASM_TEMPLATE_4		_SDT_ASM_TEMPLATE_3 _SDT_ASM_BLANK _SDT_ARGFMT(4)
+#define _SDT_ASM_TEMPLATE_5		_SDT_ASM_TEMPLATE_4 _SDT_ASM_BLANK _SDT_ARGFMT(5)
+#define _SDT_ASM_TEMPLATE_6		_SDT_ASM_TEMPLATE_5 _SDT_ASM_BLANK _SDT_ARGFMT(6)
+#define _SDT_ASM_TEMPLATE_7		_SDT_ASM_TEMPLATE_6 _SDT_ASM_BLANK _SDT_ARGFMT(7)
+#define _SDT_ASM_TEMPLATE_8		_SDT_ASM_TEMPLATE_7 _SDT_ASM_BLANK _SDT_ARGFMT(8)
+#define _SDT_ASM_TEMPLATE_9		_SDT_ASM_TEMPLATE_8 _SDT_ASM_BLANK _SDT_ARGFMT(9)
+#define _SDT_ASM_TEMPLATE_10		_SDT_ASM_TEMPLATE_9 _SDT_ASM_BLANK _SDT_ARGFMT(10)
+#define _SDT_ASM_TEMPLATE_11		_SDT_ASM_TEMPLATE_10 _SDT_ASM_BLANK _SDT_ARGFMT(11)
+#define _SDT_ASM_TEMPLATE_12		_SDT_ASM_TEMPLATE_11 _SDT_ASM_BLANK _SDT_ARGFMT(12)
+#define _SDT_ASM_OPERANDS_0()		[__sdt_dummy] "g" (0)
+#define _SDT_ASM_OPERANDS_1(arg1)	_SDT_ARG(1, arg1)
+#define _SDT_ASM_OPERANDS_2(arg1, arg2) \
+  _SDT_ASM_OPERANDS_1(arg1), _SDT_ARG(2, arg2)
+#define _SDT_ASM_OPERANDS_3(arg1, arg2, arg3) \
+  _SDT_ASM_OPERANDS_2(arg1, arg2), _SDT_ARG(3, arg3)
+#define _SDT_ASM_OPERANDS_4(arg1, arg2, arg3, arg4) \
+  _SDT_ASM_OPERANDS_3(arg1, arg2, arg3), _SDT_ARG(4, arg4)
+#define _SDT_ASM_OPERANDS_5(arg1, arg2, arg3, arg4, arg5) \
+  _SDT_ASM_OPERANDS_4(arg1, arg2, arg3, arg4), _SDT_ARG(5, arg5)
+#define _SDT_ASM_OPERANDS_6(arg1, arg2, arg3, arg4, arg5, arg6) \
+  _SDT_ASM_OPERANDS_5(arg1, arg2, arg3, arg4, arg5), _SDT_ARG(6, arg6)
+#define _SDT_ASM_OPERANDS_7(arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
+  _SDT_ASM_OPERANDS_6(arg1, arg2, arg3, arg4, arg5, arg6), _SDT_ARG(7, arg7)
+#define _SDT_ASM_OPERANDS_8(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \
+  _SDT_ASM_OPERANDS_7(arg1, arg2, arg3, arg4, arg5, arg6, arg7), \
+    _SDT_ARG(8, arg8)
+#define _SDT_ASM_OPERANDS_9(arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9) \
+  _SDT_ASM_OPERANDS_8(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8), \
+    _SDT_ARG(9, arg9)
+#define _SDT_ASM_OPERANDS_10(arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10) \
+  _SDT_ASM_OPERANDS_9(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9), \
+    _SDT_ARG(10, arg10)
+#define _SDT_ASM_OPERANDS_11(arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10,arg11) \
+  _SDT_ASM_OPERANDS_10(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10), \
+    _SDT_ARG(11, arg11)
+#define _SDT_ASM_OPERANDS_12(arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10,arg11,arg12) \
+  _SDT_ASM_OPERANDS_11(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11), \
+    _SDT_ARG(12, arg12)
+
+/* These macros can be used in C, C++, or assembly code.
+   In assembly code the arguments should use normal assembly operand syntax.  */
+
+#define STAP_PROBE(provider, name) \
+  _SDT_PROBE(provider, name, 0, ())
+#define STAP_PROBE1(provider, name, arg1) \
+  _SDT_PROBE(provider, name, 1, (arg1))
+#define STAP_PROBE2(provider, name, arg1, arg2) \
+  _SDT_PROBE(provider, name, 2, (arg1, arg2))
+#define STAP_PROBE3(provider, name, arg1, arg2, arg3) \
+  _SDT_PROBE(provider, name, 3, (arg1, arg2, arg3))
+#define STAP_PROBE4(provider, name, arg1, arg2, arg3, arg4) \
+  _SDT_PROBE(provider, name, 4, (arg1, arg2, arg3, arg4))
+#define STAP_PROBE5(provider, name, arg1, arg2, arg3, arg4, arg5) \
+  _SDT_PROBE(provider, name, 5, (arg1, arg2, arg3, arg4, arg5))
+#define STAP_PROBE6(provider, name, arg1, arg2, arg3, arg4, arg5, arg6)	\
+  _SDT_PROBE(provider, name, 6, (arg1, arg2, arg3, arg4, arg5, arg6))
+#define STAP_PROBE7(provider, name, arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
+  _SDT_PROBE(provider, name, 7, (arg1, arg2, arg3, arg4, arg5, arg6, arg7))
+#define STAP_PROBE8(provider,name,arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8) \
+  _SDT_PROBE(provider, name, 8, (arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8))
+#define STAP_PROBE9(provider,name,arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9)\
+  _SDT_PROBE(provider, name, 9, (arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9))
+#define STAP_PROBE10(provider,name,arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10) \
+  _SDT_PROBE(provider, name, 10, \
+	     (arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10))
+#define STAP_PROBE11(provider,name,arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10,arg11) \
+  _SDT_PROBE(provider, name, 11, \
+	     (arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10,arg11))
+#define STAP_PROBE12(provider,name,arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10,arg11,arg12) \
+  _SDT_PROBE(provider, name, 12, \
+	     (arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10,arg11,arg12))
+
+/* This STAP_PROBEV macro can be used in variadic scenarios, where the
+   number of probe arguments is not known until compile time.  Since
+   variadic macro support may vary with compiler options, you must
+   pre-#define SDT_USE_VARIADIC to enable this type of probe.
+
+   The trick to count __VA_ARGS__ was inspired by this post by
+   Laurent Deniau <laurent.deniau@cern.ch>:
+       http://groups.google.com/group/comp.std.c/msg/346fc464319b1ee5
+
+   Note that our _SDT_NARG is called with an extra 0 arg that's not
+   counted, so we don't have to worry about the behavior of macros
+   called without any arguments.  */
+
+#define _SDT_NARG(...) __SDT_NARG(__VA_ARGS__, 12,11,10,9,8,7,6,5,4,3,2,1,0)
+#define __SDT_NARG(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12, N, ...) N
+#ifdef SDT_USE_VARIADIC
+#define _SDT_PROBE_N(provider, name, N, ...) \
+  _SDT_PROBE(provider, name, N, (__VA_ARGS__))
+#define STAP_PROBEV(provider, name, ...) \
+  _SDT_PROBE_N(provider, name, _SDT_NARG(0, ##__VA_ARGS__), ##__VA_ARGS__)
+#endif
+
+/* These macros are for use in asm statements.  You must compile
+   with -std=gnu99 or -std=c99 to use the STAP_PROBE_ASM macro.
+
+   The STAP_PROBE_ASM macro generates a quoted string to be used in the
+   template portion of the asm statement, concatenated with strings that
+   contain the actual assembly code around the probe site.
+
+   For example:
+
+	asm ("before\n"
+	     STAP_PROBE_ASM(provider, fooprobe, %eax 4(%esi))
+	     "after");
+
+   emits the assembly code for "before\nafter", with a probe in between.
+   The probe arguments are the %eax register, and the value of the memory
+   word located 4 bytes past the address in the %esi register.  Note that
+   because this is a simple asm, not a GNU C extended asm statement, these
+   % characters do not need to be doubled to generate literal %reg names.
+
+   In a GNU C extended asm statement, the probe arguments can be specified
+   using the macro STAP_PROBE_ASM_TEMPLATE(n) for n arguments.  The paired
+   macro STAP_PROBE_ASM_OPERANDS gives the C values of these probe arguments,
+   and appears in the input operand list of the asm statement.  For example:
+
+	asm ("someinsn %0,%1\n" // %0 is output operand, %1 is input operand
+	     STAP_PROBE_ASM(provider, fooprobe, STAP_PROBE_ASM_TEMPLATE(3))
+	     "otherinsn %[namedarg]"
+	     : "r" (outvar)
+	     : "g" (some_value), [namedarg] "i" (1234),
+	       STAP_PROBE_ASM_OPERANDS(3, some_value, some_ptr->field, 1234));
+
+    This is just like writing:
+
+	STAP_PROBE3(provider, fooprobe, some_value, some_ptr->field, 1234));
+
+    but the probe site is right between "someinsn" and "otherinsn".
+
+    The probe arguments in STAP_PROBE_ASM can be given as assembly
+    operands instead, even inside a GNU C extended asm statement.
+    Note that these can use operand templates like %0 or %[name],
+    and likewise they must write %%reg for a literal operand of %reg.  */
+
+#define _SDT_ASM_BODY_1(p,n,...) _SDT_ASM_BODY(p,n,_SDT_ASM_SUBSTR,(__VA_ARGS__))
+#define _SDT_ASM_BODY_2(p,n,...) _SDT_ASM_BODY(p,n,/*_SDT_ASM_STRING */,__VA_ARGS__)
+#define _SDT_ASM_BODY_N2(p,n,no,...) _SDT_ASM_BODY_ ## no(p,n,__VA_ARGS__)
+#define _SDT_ASM_BODY_N1(p,n,no,...) _SDT_ASM_BODY_N2(p,n,no,__VA_ARGS__)
+#define _SDT_ASM_BODY_N(p,n,...) _SDT_ASM_BODY_N1(p,n,_SDT_NARG(0, __VA_ARGS__),__VA_ARGS__)
+
+#if __STDC_VERSION__ >= 199901L
+# define STAP_PROBE_ASM(provider, name, ...)		\
+  _SDT_ASM_BODY_N(provider, name, __VA_ARGS__)					\
+  _SDT_ASM_BASE
+# define STAP_PROBE_ASM_OPERANDS(n, ...) _SDT_ASM_OPERANDS_##n(__VA_ARGS__)
+#else
+# define STAP_PROBE_ASM(provider, name, args)	\
+  _SDT_ASM_BODY(provider, name, /* _SDT_ASM_STRING */, (args))	\
+  _SDT_ASM_BASE
+#endif
+#define STAP_PROBE_ASM_TEMPLATE(n) _SDT_ASM_TEMPLATE_##n,"use _SDT_ASM_TEMPLATE_"
+
+
+/* DTrace compatible macro names.  */
+#define DTRACE_PROBE(provider,probe)		\
+  STAP_PROBE(provider,probe)
+#define DTRACE_PROBE1(provider,probe,parm1)	\
+  STAP_PROBE1(provider,probe,parm1)
+#define DTRACE_PROBE2(provider,probe,parm1,parm2)	\
+  STAP_PROBE2(provider,probe,parm1,parm2)
+#define DTRACE_PROBE3(provider,probe,parm1,parm2,parm3) \
+  STAP_PROBE3(provider,probe,parm1,parm2,parm3)
+#define DTRACE_PROBE4(provider,probe,parm1,parm2,parm3,parm4)	\
+  STAP_PROBE4(provider,probe,parm1,parm2,parm3,parm4)
+#define DTRACE_PROBE5(provider,probe,parm1,parm2,parm3,parm4,parm5)	\
+  STAP_PROBE5(provider,probe,parm1,parm2,parm3,parm4,parm5)
+#define DTRACE_PROBE6(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6) \
+  STAP_PROBE6(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6)
+#define DTRACE_PROBE7(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7) \
+  STAP_PROBE7(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7)
+#define DTRACE_PROBE8(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8) \
+  STAP_PROBE8(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8)
+#define DTRACE_PROBE9(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9) \
+  STAP_PROBE9(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9)
+#define DTRACE_PROBE10(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9,parm10) \
+  STAP_PROBE10(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9,parm10)
+#define DTRACE_PROBE11(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9,parm10,parm11) \
+  STAP_PROBE11(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9,parm10,parm11)
+#define DTRACE_PROBE12(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9,parm10,parm11,parm12) \
+  STAP_PROBE12(provider,probe,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9,parm10,parm11,parm12)
+
+
+#endif /* sys/sdt.h */