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, 213 insertions, 0 deletions

diff --git a/arch/x86/math-emu/poly_tan.c b/arch/x86/math-emu/poly_tan.c
new file mode 100644
index 000000000..1f5b1d712
--- /dev/null
+++ b/arch/x86/math-emu/poly_tan.c
@@ -0,0 +1,213 @@
+// SPDX-License-Identifier: GPL-2.0
+/*---------------------------------------------------------------------------+
+ |  poly_tan.c                                                               |
+ |                                                                           |
+ | Compute the tan of a FPU_REG, using a polynomial approximation.           |
+ |                                                                           |
+ | Copyright (C) 1992,1993,1994,1997,1999                                    |
+ |                       W. Metzenthen, 22 Parker St, Ormond, Vic 3163,      |
+ |                       Australia.  E-mail   billm@melbpc.org.au            |
+ |                                                                           |
+ |                                                                           |
+ +---------------------------------------------------------------------------*/
+
+#include "exception.h"
+#include "reg_constant.h"
+#include "fpu_emu.h"
+#include "fpu_system.h"
+#include "control_w.h"
+#include "poly.h"
+
+#define	HiPOWERop	3	/* odd poly, positive terms */
+static const unsigned long long oddplterm[HiPOWERop] = {
+	0x0000000000000000LL,
+	0x0051a1cf08fca228LL,
+	0x0000000071284ff7LL
+};
+
+#define	HiPOWERon	2	/* odd poly, negative terms */
+static const unsigned long long oddnegterm[HiPOWERon] = {
+	0x1291a9a184244e80LL,
+	0x0000583245819c21LL
+};
+
+#define	HiPOWERep	2	/* even poly, positive terms */
+static const unsigned long long evenplterm[HiPOWERep] = {
+	0x0e848884b539e888LL,
+	0x00003c7f18b887daLL
+};
+
+#define	HiPOWERen	2	/* even poly, negative terms */
+static const unsigned long long evennegterm[HiPOWERen] = {
+	0xf1f0200fd51569ccLL,
+	0x003afb46105c4432LL
+};
+
+static const unsigned long long twothirds = 0xaaaaaaaaaaaaaaabLL;
+
+/*--- poly_tan() ------------------------------------------------------------+
+ |                                                                           |
+ +---------------------------------------------------------------------------*/
+void poly_tan(FPU_REG *st0_ptr)
+{
+	long int exponent;
+	int invert;
+	Xsig argSq, argSqSq, accumulatoro, accumulatore, accum,
+	    argSignif, fix_up;
+	unsigned long adj;
+
+	exponent = exponent(st0_ptr);
+
+#ifdef PARANOID
+	if (signnegative(st0_ptr)) {	/* Can't hack a number < 0.0 */
+		arith_invalid(0);
+		return;
+	}			/* Need a positive number */
+#endif /* PARANOID */
+
+	/* Split the problem into two domains, smaller and larger than pi/4 */
+	if ((exponent == 0)
+	    || ((exponent == -1) && (st0_ptr->sigh > 0xc90fdaa2))) {
+		/* The argument is greater than (approx) pi/4 */
+		invert = 1;
+		accum.lsw = 0;
+		XSIG_LL(accum) = significand(st0_ptr);
+
+		if (exponent == 0) {
+			/* The argument is >= 1.0 */
+			/* Put the binary point at the left. */
+			XSIG_LL(accum) <<= 1;
+		}
+		/* pi/2 in hex is: 1.921fb54442d18469 898CC51701B839A2 52049C1 */
+		XSIG_LL(accum) = 0x921fb54442d18469LL - XSIG_LL(accum);
+		/* This is a special case which arises due to rounding. */
+		if (XSIG_LL(accum) == 0xffffffffffffffffLL) {
+			FPU_settag0(TAG_Valid);
+			significand(st0_ptr) = 0x8a51e04daabda360LL;
+			setexponent16(st0_ptr,
+				      (0x41 + EXTENDED_Ebias) | SIGN_Negative);
+			return;
+		}
+
+		argSignif.lsw = accum.lsw;
+		XSIG_LL(argSignif) = XSIG_LL(accum);
+		exponent = -1 + norm_Xsig(&argSignif);
+	} else {
+		invert = 0;
+		argSignif.lsw = 0;
+		XSIG_LL(accum) = XSIG_LL(argSignif) = significand(st0_ptr);
+
+		if (exponent < -1) {
+			/* shift the argument right by the required places */
+			if (FPU_shrx(&XSIG_LL(accum), -1 - exponent) >=
+			    0x80000000U)
+				XSIG_LL(accum)++;	/* round up */
+		}
+	}
+
+	XSIG_LL(argSq) = XSIG_LL(accum);
+	argSq.lsw = accum.lsw;
+	mul_Xsig_Xsig(&argSq, &argSq);
+	XSIG_LL(argSqSq) = XSIG_LL(argSq);
+	argSqSq.lsw = argSq.lsw;
+	mul_Xsig_Xsig(&argSqSq, &argSqSq);
+
+	/* Compute the negative terms for the numerator polynomial */
+	accumulatoro.msw = accumulatoro.midw = accumulatoro.lsw = 0;
+	polynomial_Xsig(&accumulatoro, &XSIG_LL(argSqSq), oddnegterm,
+			HiPOWERon - 1);
+	mul_Xsig_Xsig(&accumulatoro, &argSq);
+	negate_Xsig(&accumulatoro);
+	/* Add the positive terms */
+	polynomial_Xsig(&accumulatoro, &XSIG_LL(argSqSq), oddplterm,
+			HiPOWERop - 1);
+
+	/* Compute the positive terms for the denominator polynomial */
+	accumulatore.msw = accumulatore.midw = accumulatore.lsw = 0;
+	polynomial_Xsig(&accumulatore, &XSIG_LL(argSqSq), evenplterm,
+			HiPOWERep - 1);
+	mul_Xsig_Xsig(&accumulatore, &argSq);
+	negate_Xsig(&accumulatore);
+	/* Add the negative terms */
+	polynomial_Xsig(&accumulatore, &XSIG_LL(argSqSq), evennegterm,
+			HiPOWERen - 1);
+	/* Multiply by arg^2 */
+	mul64_Xsig(&accumulatore, &XSIG_LL(argSignif));
+	mul64_Xsig(&accumulatore, &XSIG_LL(argSignif));
+	/* de-normalize and divide by 2 */
+	shr_Xsig(&accumulatore, -2 * (1 + exponent) + 1);
+	negate_Xsig(&accumulatore);	/* This does 1 - accumulator */
+
+	/* Now find the ratio. */
+	if (accumulatore.msw == 0) {
+		/* accumulatoro must contain 1.0 here, (actually, 0) but it
+		   really doesn't matter what value we use because it will
+		   have negligible effect in later calculations
+		 */
+		XSIG_LL(accum) = 0x8000000000000000LL;
+		accum.lsw = 0;
+	} else {
+		div_Xsig(&accumulatoro, &accumulatore, &accum);
+	}
+
+	/* Multiply by 1/3 * arg^3 */
+	mul64_Xsig(&accum, &XSIG_LL(argSignif));
+	mul64_Xsig(&accum, &XSIG_LL(argSignif));
+	mul64_Xsig(&accum, &XSIG_LL(argSignif));
+	mul64_Xsig(&accum, &twothirds);
+	shr_Xsig(&accum, -2 * (exponent + 1));
+
+	/* tan(arg) = arg + accum */
+	add_two_Xsig(&accum, &argSignif, &exponent);
+
+	if (invert) {
+		/* We now have the value of tan(pi_2 - arg) where pi_2 is an
+		   approximation for pi/2
+		 */
+		/* The next step is to fix the answer to compensate for the
+		   error due to the approximation used for pi/2
+		 */
+
+		/* This is (approx) delta, the error in our approx for pi/2
+		   (see above). It has an exponent of -65
+		 */
+		XSIG_LL(fix_up) = 0x898cc51701b839a2LL;
+		fix_up.lsw = 0;
+
+		if (exponent == 0)
+			adj = 0xffffffff;	/* We want approx 1.0 here, but
+						   this is close enough. */
+		else if (exponent > -30) {
+			adj = accum.msw >> -(exponent + 1);	/* tan */
+			adj = mul_32_32(adj, adj);	/* tan^2 */
+		} else
+			adj = 0;
+		adj = mul_32_32(0x898cc517, adj);	/* delta * tan^2 */
+
+		fix_up.msw += adj;
+		if (!(fix_up.msw & 0x80000000)) {	/* did fix_up overflow ? */
+			/* Yes, we need to add an msb */
+			shr_Xsig(&fix_up, 1);
+			fix_up.msw |= 0x80000000;
+			shr_Xsig(&fix_up, 64 + exponent);
+		} else
+			shr_Xsig(&fix_up, 65 + exponent);
+
+		add_two_Xsig(&accum, &fix_up, &exponent);
+
+		/* accum now contains tan(pi/2 - arg).
+		   Use tan(arg) = 1.0 / tan(pi/2 - arg)
+		 */
+		accumulatoro.lsw = accumulatoro.midw = 0;
+		accumulatoro.msw = 0x80000000;
+		div_Xsig(&accumulatoro, &accum, &accum);
+		exponent = -exponent - 1;
+	}
+
+	/* Transfer the result */
+	round_Xsig(&accum);
+	FPU_settag0(TAG_Valid);
+	significand(st0_ptr) = XSIG_LL(accum);
+	setexponent16(st0_ptr, exponent + EXTENDED_Ebias);	/* Result is positive. */
+
+}