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, 357 insertions, 0 deletions

diff --git a/arch/parisc/math-emu/decode_exc.c b/arch/parisc/math-emu/decode_exc.c
new file mode 100644
index 000000000..d41ddb343
--- /dev/null
+++ b/arch/parisc/math-emu/decode_exc.c
@@ -0,0 +1,357 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Linux/PA-RISC Project (http://www.parisc-linux.org/)
+ *
+ * Floating-point emulation code
+ *  Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
+ */
+/*
+ * BEGIN_DESC
+ *
+ *  File:
+ *	@(#)	pa/fp/decode_exc.c		$ Revision: $
+ *
+ *  Purpose:
+ *	<<please update with a synopsis of the functionality provided by this file>>
+ *
+ *  External Interfaces:
+ *	<<the following list was autogenerated, please review>>
+ *	decode_fpu(Fpu_register, trap_counts)
+ *
+ *  Internal Interfaces:
+ *	<<please update>>
+ *
+ *  Theory:
+ *	<<please update with a overview of the operation of this file>>
+ *
+ * END_DESC
+*/
+
+#include <linux/kernel.h>
+#include "float.h"
+#include "sgl_float.h"
+#include "dbl_float.h"
+#include "cnv_float.h"
+/* #include "types.h" */
+#include <asm/signal.h>
+#include <asm/siginfo.h>
+/* #include <machine/sys/mdep_private.h> */
+
+#undef Fpustatus_register
+#define Fpustatus_register Fpu_register[0]
+
+/* General definitions */
+#define DOESTRAP 1
+#define NOTRAP 0
+#define SIGNALCODE(signal, code) ((signal) << 24 | (code))
+#define copropbit	1<<31-2	/* bit position 2 */
+#define opclass		9	/* bits 21 & 22 */
+#define fmtbits		11	/* bits 19 & 20 */
+#define df		13	/* bits 17 & 18 */
+#define twobits		3	/* mask low-order 2 bits */
+#define fivebits	31	/* mask low-order 5 bits */
+#define MAX_EXCP_REG	7	/* number of excpeption registers to check */
+
+/* Exception register definitions */
+#define Excp_type(index) Exceptiontype(Fpu_register[index])
+#define Excp_instr(index) Instructionfield(Fpu_register[index])
+#define Clear_excp_register(index) Allexception(Fpu_register[index]) = 0
+#define Excp_format() \
+	(current_ir >> ((current_ir>>opclass & twobits) == 1 ? df : fmtbits) & twobits)
+
+/* Miscellaneous definitions */
+#define Fpu_sgl(index) Fpu_register[index*2]
+
+#define Fpu_dblp1(index) Fpu_register[index*2]
+#define Fpu_dblp2(index) Fpu_register[(index*2)+1]
+
+#define Fpu_quadp1(index) Fpu_register[index*2]
+#define Fpu_quadp2(index) Fpu_register[(index*2)+1]
+#define Fpu_quadp3(index) Fpu_register[(index*2)+2]
+#define Fpu_quadp4(index) Fpu_register[(index*2)+3]
+
+/* Single precision floating-point definitions */
+#ifndef Sgl_decrement
+# define Sgl_decrement(sgl_value) Sall(sgl_value)--
+#endif
+
+/* Double precision floating-point definitions */
+#ifndef Dbl_decrement
+# define Dbl_decrement(dbl_valuep1,dbl_valuep2) \
+    if ((Dallp2(dbl_valuep2)--) == 0) Dallp1(dbl_valuep1)-- 
+#endif
+
+
+#define update_trap_counts(Fpu_register, aflags, bflags, trap_counts) {	\
+	aflags=(Fpu_register[0])>>27;	/* assumes zero fill. 32 bit */	\
+	Fpu_register[0] |= bflags;					\
+}
+
+u_int
+decode_fpu(unsigned int Fpu_register[], unsigned int trap_counts[])
+{
+    unsigned int current_ir, excp;
+    int target, exception_index = 1;
+    boolean inexact;
+    unsigned int aflags;
+    unsigned int bflags;
+    unsigned int excptype;
+
+
+    /* Keep stats on how many floating point exceptions (based on type)
+     * that happen.  Want to keep this overhead low, but still provide
+     * some information to the customer.  All exits from this routine
+     * need to restore Fpu_register[0]
+     */
+
+    bflags=(Fpu_register[0] & 0xf8000000);
+    Fpu_register[0] &= 0x07ffffff;
+
+    /* exception_index is used to index the exception register queue.  It
+     *   always points at the last register that contains a valid exception.  A
+     *   zero value implies no exceptions (also the initialized value).  Setting
+     *   the T-bit resets the exception_index to zero.
+     */
+
+    /*
+     * Check for reserved-op exception.  A reserved-op exception does not 
+     * set any exception registers nor does it set the T-bit.  If the T-bit
+     * is not set then a reserved-op exception occurred.
+     *
+     * At some point, we may want to report reserved op exceptions as
+     * illegal instructions.
+     */
+    
+    if (!Is_tbit_set()) {
+	update_trap_counts(Fpu_register, aflags, bflags, trap_counts);
+	return SIGNALCODE(SIGILL, ILL_COPROC);
+    }
+
+    /* 
+     * Is a coprocessor op. 
+     *
+     * Now we need to determine what type of exception occurred.
+     */
+    for (exception_index=1; exception_index<=MAX_EXCP_REG; exception_index++) {
+	current_ir = Excp_instr(exception_index);
+	  /*
+	   * On PA89: there are 5 different unimplemented exception
+	   * codes: 0x1, 0x9, 0xb, 0x3, and 0x23.  PA-RISC 2.0 adds
+	   * another, 0x2b.  Only these have the low order bit set.
+	   */
+	excptype = Excp_type(exception_index);
+	if (excptype & UNIMPLEMENTEDEXCEPTION) {
+		/*
+		 * Clear T-bit and exception register so that
+		 * we can tell if a trap really occurs while 
+		 * emulating the instruction.
+		 */
+		Clear_tbit();
+		Clear_excp_register(exception_index);
+		/*
+		 * Now emulate this instruction.  If a trap occurs,
+		 * fpudispatch will return a non-zero number 
+		 */
+		excp = fpudispatch(current_ir,excptype,0,Fpu_register);
+		/* accumulate the status flags, don't lose them as in hpux */
+		if (excp) {
+			/*
+			 * We now need to make sure that the T-bit and the
+			 * exception register contain the correct values
+			 * before continuing.
+			 */
+			/*
+			 * Set t-bit since it might still be needed for a
+			 * subsequent real trap (I don't understand fully -PB)
+			 */
+			Set_tbit();
+			/* some of the following code uses
+			 * Excp_type(exception_index) so fix that up */
+			Set_exceptiontype_and_instr_field(excp,current_ir,
+			 Fpu_register[exception_index]);
+			if (excp == UNIMPLEMENTEDEXCEPTION) {
+				/*
+			 	 * it is really unimplemented, so restore the
+			 	 * TIMEX extended unimplemented exception code
+			 	 */
+				excp = excptype;
+				update_trap_counts(Fpu_register, aflags, bflags, 
+					   trap_counts);
+				return SIGNALCODE(SIGILL, ILL_COPROC);
+			}
+			/* some of the following code uses excptype, so
+			 * fix that up too */
+			excptype = excp;
+		}
+		/* handle exceptions other than the real UNIMPLIMENTED the
+		 * same way as if the hardware had caused them */
+		if (excp == NOEXCEPTION)
+			/* For now use 'break', should technically be 'continue' */
+			break;
+	}
+
+	  /*
+	   * In PA89, the underflow exception has been extended to encode
+	   * additional information.  The exception looks like pp01x0,
+	   * where x is 1 if inexact and pp represent the inexact bit (I)
+	   * and the round away bit (RA)
+	   */
+	if (excptype & UNDERFLOWEXCEPTION) {
+		/* check for underflow trap enabled */
+		if (Is_underflowtrap_enabled()) {
+			update_trap_counts(Fpu_register, aflags, bflags, 
+					   trap_counts);
+			return SIGNALCODE(SIGFPE, FPE_FLTUND);
+		} else {
+		    /*
+		     * Isn't a real trap; we need to 
+		     * return the default value.
+		     */
+		    target = current_ir & fivebits;
+#ifndef lint
+		    if (Ibit(Fpu_register[exception_index])) inexact = TRUE;
+		    else inexact = FALSE;
+#endif
+		    switch (Excp_format()) {
+		      case SGL:
+		        /*
+		         * If ra (round-away) is set, will 
+		         * want to undo the rounding done
+		         * by the hardware.
+		         */
+		        if (Rabit(Fpu_register[exception_index])) 
+				Sgl_decrement(Fpu_sgl(target));
+
+			/* now denormalize */
+			sgl_denormalize(&Fpu_sgl(target),&inexact,Rounding_mode());
+		    	break;
+		      case DBL:
+		    	/*
+		    	 * If ra (round-away) is set, will 
+		    	 * want to undo the rounding done
+		    	 * by the hardware.
+		    	 */
+		    	if (Rabit(Fpu_register[exception_index])) 
+				Dbl_decrement(Fpu_dblp1(target),Fpu_dblp2(target));
+
+			/* now denormalize */
+			dbl_denormalize(&Fpu_dblp1(target),&Fpu_dblp2(target),
+			  &inexact,Rounding_mode());
+		    	break;
+		    }
+		    if (inexact) Set_underflowflag();
+		    /* 
+		     * Underflow can generate an inexact
+		     * exception.  If inexact trap is enabled,
+		     * want to do an inexact trap, otherwise 
+		     * set inexact flag.
+		     */
+		    if (inexact && Is_inexacttrap_enabled()) {
+		    	/*
+		    	 * Set exception field of exception register
+		    	 * to inexact, parm field to zero.
+			 * Underflow bit should be cleared.
+		    	 */
+		    	Set_exceptiontype(Fpu_register[exception_index],
+			 INEXACTEXCEPTION);
+			Set_parmfield(Fpu_register[exception_index],0);
+			update_trap_counts(Fpu_register, aflags, bflags, 
+					   trap_counts);
+			return SIGNALCODE(SIGFPE, FPE_FLTRES);
+		    }
+		    else {
+		    	/*
+		    	 * Exception register needs to be cleared.  
+			 * Inexact flag needs to be set if inexact.
+		    	 */
+		    	Clear_excp_register(exception_index);
+		    	if (inexact) Set_inexactflag();
+		    }
+		}
+		continue;
+	}
+	switch(Excp_type(exception_index)) {
+	  case OVERFLOWEXCEPTION:
+	  case OVERFLOWEXCEPTION | INEXACTEXCEPTION:
+		/* check for overflow trap enabled */
+			update_trap_counts(Fpu_register, aflags, bflags, 
+					   trap_counts);
+		if (Is_overflowtrap_enabled()) {
+			update_trap_counts(Fpu_register, aflags, bflags, 
+					   trap_counts);
+			return SIGNALCODE(SIGFPE, FPE_FLTOVF);
+		} else {
+			/*
+			 * Isn't a real trap; we need to 
+			 * return the default value.
+			 */
+			target = current_ir & fivebits;
+			switch (Excp_format()) {
+			  case SGL: 
+				Sgl_setoverflow(Fpu_sgl(target));
+				break;
+			  case DBL:
+				Dbl_setoverflow(Fpu_dblp1(target),Fpu_dblp2(target));
+				break;
+			}
+			Set_overflowflag();
+			/* 
+			 * Overflow always generates an inexact
+			 * exception.  If inexact trap is enabled,
+			 * want to do an inexact trap, otherwise 
+			 * set inexact flag.
+			 */
+			if (Is_inexacttrap_enabled()) {
+				/*
+				 * Set exception field of exception
+				 * register to inexact.  Overflow
+				 * bit should be cleared.
+				 */
+				Set_exceptiontype(Fpu_register[exception_index],
+				 INEXACTEXCEPTION);
+				update_trap_counts(Fpu_register, aflags, bflags,
+					   trap_counts);
+				return SIGNALCODE(SIGFPE, FPE_FLTRES);
+			}
+			else {
+				/*
+				 * Exception register needs to be cleared.  
+				 * Inexact flag needs to be set.
+				 */
+				Clear_excp_register(exception_index);
+				Set_inexactflag();
+			}
+		}
+		break;
+	  case INVALIDEXCEPTION:
+	  case OPC_2E_INVALIDEXCEPTION:
+		update_trap_counts(Fpu_register, aflags, bflags, trap_counts);
+		return SIGNALCODE(SIGFPE, FPE_FLTINV);
+	  case DIVISIONBYZEROEXCEPTION:
+		update_trap_counts(Fpu_register, aflags, bflags, trap_counts);
+		Clear_excp_register(exception_index);
+	  	return SIGNALCODE(SIGFPE, FPE_FLTDIV);
+	  case INEXACTEXCEPTION:
+		update_trap_counts(Fpu_register, aflags, bflags, trap_counts);
+		return SIGNALCODE(SIGFPE, FPE_FLTRES);
+	  default:
+		update_trap_counts(Fpu_register, aflags, bflags, trap_counts);
+		printk("%s(%d) Unknown FPU exception 0x%x\n", __FILE__,
+			__LINE__, Excp_type(exception_index));
+		return SIGNALCODE(SIGILL, ILL_COPROC);
+	  case NOEXCEPTION:	/* no exception */
+		/*
+		 * Clear exception register in case 
+		 * other fields are non-zero.
+		 */
+		Clear_excp_register(exception_index);
+		break;
+	}
+    }
+    /*
+     * No real exceptions occurred.
+     */
+    Clear_tbit();
+    update_trap_counts(Fpu_register, aflags, bflags, trap_counts);
+    return(NOTRAP);
+}