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, 293 insertions, 0 deletions

diff --git a/arch/parisc/kernel/real2.S b/arch/parisc/kernel/real2.S
new file mode 100644
index 000000000..4dc12c4c0
--- /dev/null
+++ b/arch/parisc/kernel/real2.S
@@ -0,0 +1,293 @@
+/*
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2000 Hewlett Packard (Paul Bame bame@puffin.external.hp.com)
+ *
+ */
+
+#include <asm/pdc.h>
+#include <asm/psw.h>
+#include <asm/assembly.h>
+#include <asm/asm-offsets.h>
+
+#include <linux/linkage.h>
+
+	.export real_stack
+	.export real64_stack
+	__PAGE_ALIGNED_BSS
+real_stack:
+real64_stack:
+	.block	8192
+
+#define N_SAVED_REGS 9
+	.section	.bss
+save_cr_space:
+	.block	REG_SZ * N_SAVED_REGS
+save_cr_end:
+
+
+/************************ 32-bit real-mode calls ***********************/
+/* This can be called in both narrow and wide kernels */
+
+	.text
+
+	/* unsigned long real32_call_asm(unsigned int *sp,
+	 *		unsigned int *arg0p,
+	 *		unsigned int iodc_fn)
+	 *	sp is value of stack pointer to adopt before calling PDC (virt)
+	 *	arg0p points to where saved arg values may be found
+	 *	iodc_fn is the IODC function to call
+	 */
+
+ENTRY_CFI(real32_call_asm)
+	STREG	%rp, -RP_OFFSET(%sp)	/* save RP */
+#ifdef CONFIG_64BIT
+	callee_save
+	ldo	2*REG_SZ(%sp), %sp	/* room for a couple more saves */
+	STREG	%r27, -1*REG_SZ(%sp)
+	STREG	%r29, -2*REG_SZ(%sp)
+#endif
+	STREG	%sp, -REG_SZ(%arg0)	/* save SP on real-mode stack */
+	copy	%arg0, %sp		/* adopt the real-mode SP */
+
+	/* save iodc_fn */
+	copy	%arg2, %r31
+
+	/* load up the arg registers from the saved arg area */
+	/* 32-bit calling convention passes first 4 args in registers */
+	ldw	0(%arg1), %arg0		/* note overwriting arg0 */
+	ldw	-8(%arg1), %arg2
+	ldw	-12(%arg1), %arg3
+	ldw	-4(%arg1), %arg1	/* obviously must do this one last! */
+
+	tophys_r1  %sp
+
+	b,l	rfi_virt2real,%r2
+	nop
+
+	b,l	save_control_regs,%r2		/* modifies r1, r2, r28 */
+	nop
+
+#ifdef CONFIG_64BIT
+	rsm	PSW_SM_W, %r0		/* go narrow */
+#endif
+
+	load32	PA(ric_ret), %r2
+	bv	0(%r31)
+	nop
+ric_ret:
+#ifdef CONFIG_64BIT
+	ssm	PSW_SM_W, %r0		/* go wide */
+#endif
+	/* restore CRs before going virtual in case we page fault */
+	b,l	restore_control_regs, %r2	/* modifies r1, r2, r26 */
+	nop
+
+	b,l	rfi_real2virt,%r2
+	nop
+
+	tovirt_r1 %sp
+	LDREG	-REG_SZ(%sp), %sp	/* restore SP */
+#ifdef CONFIG_64BIT
+	LDREG	-1*REG_SZ(%sp), %r27
+	LDREG	-2*REG_SZ(%sp), %r29
+	ldo	-2*REG_SZ(%sp), %sp
+	callee_rest
+#endif
+	LDREG	-RP_OFFSET(%sp), %rp	/* restore RP */
+	bv	0(%rp)
+	nop
+ENDPROC_CFI(real32_call_asm)
+
+
+#  define PUSH_CR(r, where) mfctl r, %r1 ! STREG,ma %r1, REG_SZ(where)
+#  define POP_CR(r, where) LDREG,mb -REG_SZ(where), %r1 ! mtctl %r1, r
+
+	.text
+ENTRY_CFI(save_control_regs)
+	load32	PA(save_cr_space), %r28
+	PUSH_CR(%cr24, %r28)
+	PUSH_CR(%cr25, %r28)
+	PUSH_CR(%cr26, %r28)
+	PUSH_CR(%cr27, %r28)
+	PUSH_CR(%cr28, %r28)
+	PUSH_CR(%cr29, %r28)
+	PUSH_CR(%cr30, %r28)
+	PUSH_CR(%cr31, %r28)
+	PUSH_CR(%cr15, %r28)
+	bv 0(%r2)
+	nop
+ENDPROC_CFI(save_control_regs)
+
+ENTRY_CFI(restore_control_regs)
+	load32	PA(save_cr_end), %r26
+	POP_CR(%cr15, %r26)
+	POP_CR(%cr31, %r26)
+	POP_CR(%cr30, %r26)
+	POP_CR(%cr29, %r26)
+	POP_CR(%cr28, %r26)
+	POP_CR(%cr27, %r26)
+	POP_CR(%cr26, %r26)
+	POP_CR(%cr25, %r26)
+	POP_CR(%cr24, %r26)
+	bv 0(%r2)
+	nop
+ENDPROC_CFI(restore_control_regs)
+
+/* rfi_virt2real() and rfi_real2virt() could perhaps be adapted for
+ * more general-purpose use by the several places which need RFIs
+ */
+	.text
+	.align 128
+ENTRY_CFI(rfi_virt2real)
+#if !defined(BOOTLOADER)
+	/* switch to real mode... */
+	rsm		PSW_SM_I,%r0
+	load32		PA(rfi_v2r_1), %r1
+	nop
+	nop
+	nop
+	nop
+	nop
+	
+	rsm             PSW_SM_Q,%r0  /* disable Q & I bits to load iia queue */
+	mtctl		%r0, %cr17	/* Clear IIASQ tail */
+	mtctl		%r0, %cr17	/* Clear IIASQ head */
+	mtctl		%r1, %cr18	/* IIAOQ head */
+	ldo		4(%r1), %r1
+	mtctl		%r1, %cr18	/* IIAOQ tail */
+	load32          REAL_MODE_PSW, %r1
+	mtctl		%r1, %cr22
+	rfi
+	
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+rfi_v2r_1:
+	tophys_r1 %r2
+#endif /* defined(BOOTLOADER) */
+	bv	0(%r2)
+	nop
+ENDPROC_CFI(rfi_virt2real)
+
+	.text
+	.align 128
+ENTRY_CFI(rfi_real2virt)
+#if !defined(BOOTLOADER)
+	rsm		PSW_SM_I,%r0
+	load32		(rfi_r2v_1), %r1
+	nop
+	nop
+	nop
+	nop
+	nop
+	
+	rsm             PSW_SM_Q,%r0    /* disable Q bit to load iia queue */
+	mtctl		%r0, %cr17	/* Clear IIASQ tail */
+	mtctl		%r0, %cr17	/* Clear IIASQ head */
+	mtctl		%r1, %cr18	/* IIAOQ head */
+	ldo		4(%r1), %r1
+	mtctl		%r1, %cr18	/* IIAOQ tail */
+	load32		KERNEL_PSW, %r1
+	mtctl		%r1, %cr22
+	rfi
+	
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+rfi_r2v_1:
+	tovirt_r1 %r2
+#endif /* defined(BOOTLOADER) */
+	bv	0(%r2)
+	nop
+ENDPROC_CFI(rfi_real2virt)
+
+#ifdef CONFIG_64BIT
+
+/************************ 64-bit real-mode calls ***********************/
+/* This is only usable in wide kernels right now and will probably stay so */
+	.text
+	/* unsigned long real64_call_asm(unsigned long *sp,
+	 *		unsigned long *arg0p,
+	 *		unsigned long fn)
+	 *	sp is value of stack pointer to adopt before calling PDC (virt)
+	 *	arg0p points to where saved arg values may be found
+	 *	iodc_fn is the IODC function to call
+	 */
+ENTRY_CFI(real64_call_asm)
+	std	%rp, -0x10(%sp)		/* save RP */
+	std	%sp, -8(%arg0)		/* save SP on real-mode stack */
+	copy	%arg0, %sp		/* adopt the real-mode SP */
+
+	/* save fn */
+	copy	%arg2, %r31
+
+	/* set up the new ap */
+	ldo	64(%arg1), %r29
+
+	/* load up the arg registers from the saved arg area */
+	/* 32-bit calling convention passes first 4 args in registers */
+	ldd	0*REG_SZ(%arg1), %arg0		/* note overwriting arg0 */
+	ldd	2*REG_SZ(%arg1), %arg2
+	ldd	3*REG_SZ(%arg1), %arg3
+	ldd	4*REG_SZ(%arg1), %r22
+	ldd	5*REG_SZ(%arg1), %r21
+	ldd	6*REG_SZ(%arg1), %r20
+	ldd	7*REG_SZ(%arg1), %r19
+	ldd	1*REG_SZ(%arg1), %arg1		/* do this one last! */
+
+	tophys_r1 %sp
+
+	b,l	rfi_virt2real,%r2
+	nop
+
+	b,l	save_control_regs,%r2		/* modifies r1, r2, r28 */
+	nop
+
+	load32	PA(r64_ret), %r2
+	bv	0(%r31)
+	nop
+r64_ret:
+	/* restore CRs before going virtual in case we page fault */
+	b,l	restore_control_regs, %r2	/* modifies r1, r2, r26 */
+	nop
+
+	b,l	rfi_real2virt,%r2
+	nop
+
+	tovirt_r1 %sp
+	ldd	-8(%sp), %sp		/* restore SP */
+	ldd	-0x10(%sp), %rp		/* restore RP */
+	bv	0(%rp)
+	nop
+ENDPROC_CFI(real64_call_asm)
+
+#endif
+
+	.text
+	/* http://lists.parisc-linux.org/hypermail/parisc-linux/10916.html
+	**	GCC 3.3 and later has a new function in libgcc.a for
+	**	comparing function pointers.
+	*/
+ENTRY_CFI(__canonicalize_funcptr_for_compare)
+#ifdef CONFIG_64BIT
+	bve (%r2)
+#else
+	bv %r0(%r2)
+#endif
+	copy %r26,%r28
+ENDPROC_CFI(__canonicalize_funcptr_for_compare)
+