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, 313 insertions, 0 deletions

diff --git a/arch/sparc/kernel/wuf.S b/arch/sparc/kernel/wuf.S
new file mode 100644
index 000000000..1a4ca490e
--- /dev/null
+++ b/arch/sparc/kernel/wuf.S
@@ -0,0 +1,313 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * wuf.S: Window underflow trap handler for the Sparc.
+ *
+ * Copyright (C) 1995 David S. Miller
+ */
+
+#include <asm/contregs.h>
+#include <asm/page.h>
+#include <asm/ptrace.h>
+#include <asm/psr.h>
+#include <asm/smp.h>
+#include <asm/asi.h>
+#include <asm/winmacro.h>
+#include <asm/asmmacro.h>
+#include <asm/thread_info.h>
+
+/* Just like the overflow handler we define macros for registers
+ * with fixed meanings in this routine.
+ */
+#define t_psr       l0
+#define t_pc        l1
+#define t_npc       l2
+#define t_wim       l3
+/* Don't touch the above registers or else you die horribly... */
+
+/* Now macros for the available scratch registers in this routine. */
+#define twin_tmp1    l4
+#define twin_tmp2    l5
+
+#define curptr       g6
+
+	.text
+	.align	4
+
+	/* The trap entry point has executed the following:
+	 *
+	 * rd    %psr, %l0
+	 * rd    %wim, %l3
+	 * b     fill_window_entry
+	 * andcc %l0, PSR_PS, %g0
+	 */
+
+	/* Datum current_thread_info->uwinmask contains at all times a bitmask
+	 * where if any user windows are active, at least one bit will
+	 * be set in to mask.  If no user windows are active, the bitmask
+	 * will be all zeroes.
+	 */
+
+	/* To get an idea of what has just happened to cause this
+	 * trap take a look at this diagram:
+	 *
+	 *      1  2  3  4     <--  Window number
+	 *      ----------
+	 *      T  O  W  I     <--  Symbolic name
+	 *
+	 *      O == the window that execution was in when
+	 *           the restore was attempted
+	 *
+	 *      T == the trap itself has save'd us into this
+	 *           window
+	 *
+	 *      W == this window is the one which is now invalid
+	 *           and must be made valid plus loaded from the
+	 *           stack
+	 *
+	 *      I == this window will be the invalid one when we
+	 *           are done and return from trap if successful
+	 */
+
+	/* BEGINNING OF PATCH INSTRUCTIONS */
+
+	/* On 7-window Sparc the boot code patches fnwin_patch1
+	 * with the following instruction.
+	 */
+	.globl	fnwin_patch1_7win, fnwin_patch2_7win
+fnwin_patch1_7win:	srl	%t_wim, 6, %twin_tmp2
+fnwin_patch2_7win:	and	%twin_tmp1, 0x7f, %twin_tmp1
+	/* END OF PATCH INSTRUCTIONS */
+
+	.globl	fill_window_entry, fnwin_patch1, fnwin_patch2
+fill_window_entry:
+	/* LOCATION: Window 'T' */
+
+	/* Compute what the new %wim is going to be if we retrieve
+	 * the proper window off of the stack.
+	 */
+		sll	%t_wim, 1, %twin_tmp1
+fnwin_patch1:	srl	%t_wim, 7, %twin_tmp2
+		or	%twin_tmp1, %twin_tmp2, %twin_tmp1
+fnwin_patch2:	and	%twin_tmp1, 0xff, %twin_tmp1
+
+	wr	%twin_tmp1, 0x0, %wim	/* Make window 'I' invalid */
+
+	andcc	%t_psr, PSR_PS, %g0
+	be	fwin_from_user
+	 restore	%g0, %g0, %g0		/* Restore to window 'O' */
+
+	/* Trapped from kernel, we trust that the kernel does not
+	 * 'over restore' sorta speak and just grab the window
+	 * from the stack and return.  Easy enough.
+	 */
+fwin_from_kernel:
+	/* LOCATION: Window 'O' */
+
+	restore %g0, %g0, %g0
+
+	/* LOCATION: Window 'W' */
+
+	LOAD_WINDOW(sp)	                /* Load it up */
+
+	/* Spin the wheel... */
+	save	%g0, %g0, %g0
+	save	%g0, %g0, %g0
+	/* I'd like to buy a vowel please... */
+
+	/* LOCATION: Window 'T' */
+
+	/* Now preserve the condition codes in %psr, pause, and
+	 * return from trap.  This is the simplest case of all.
+	 */
+	wr	%t_psr, 0x0, %psr
+	WRITE_PAUSE
+
+	jmp	%t_pc
+	rett	%t_npc
+
+fwin_from_user:
+	/* LOCATION: Window 'O' */
+
+	restore	%g0, %g0, %g0		/* Restore to window 'W' */
+
+	/* LOCATION: Window 'W' */
+
+	/* Branch to the stack validation routine */
+	b	srmmu_fwin_stackchk
+	 andcc	%sp, 0x7, %g0
+
+#define STACK_OFFSET (THREAD_SIZE - TRACEREG_SZ - STACKFRAME_SZ)
+
+fwin_user_stack_is_bolixed:
+	/* LOCATION: Window 'W' */
+
+	/* Place a pt_regs frame on the kernel stack, save back
+	 * to the trap window and call c-code to deal with this.
+	 */
+	LOAD_CURRENT(l4, l5)
+
+	sethi	%hi(STACK_OFFSET), %l5
+	or	%l5, %lo(STACK_OFFSET), %l5
+	add	%l4, %l5, %l5
+
+	/* Store globals into pt_regs frame. */
+	STORE_PT_GLOBALS(l5)
+	STORE_PT_YREG(l5, g3)
+
+	/* Save current in a global while we change windows. */
+	mov	%l4, %curptr
+
+	save	%g0, %g0, %g0
+
+	/* LOCATION: Window 'O' */
+
+	rd	%psr, %g3		/* Read %psr in live user window */
+	mov	%fp, %g4		/* Save bogus frame pointer. */
+
+	save	%g0, %g0, %g0
+
+	/* LOCATION: Window 'T' */
+
+	sethi	%hi(STACK_OFFSET), %l5
+	or	%l5, %lo(STACK_OFFSET), %l5
+	add	%curptr, %l5, %sp
+
+	/* Build rest of pt_regs. */
+	STORE_PT_INS(sp)
+	STORE_PT_PRIV(sp, t_psr, t_pc, t_npc)
+
+	/* re-set trap time %wim value */
+	wr	%t_wim, 0x0, %wim
+
+	/* Fix users window mask and buffer save count. */
+	mov	0x1, %g5
+	sll	%g5, %g3, %g5
+	st	%g5, [%curptr + TI_UWINMASK]		! one live user window still
+	st	%g0, [%curptr + TI_W_SAVED]		! no windows in the buffer
+
+	wr	%t_psr, PSR_ET, %psr			! enable traps
+	nop
+	call	window_underflow_fault
+	 mov	%g4, %o0
+
+	b	ret_trap_entry
+	 clr	%l6
+
+fwin_user_stack_is_ok:
+	/* LOCATION: Window 'W' */
+
+	/* The users stack area is kosher and mapped, load the
+	 * window and fall through to the finish up routine.
+	 */
+	LOAD_WINDOW(sp)
+
+	/* Round and round she goes... */
+	save	%g0, %g0, %g0		/* Save to window 'O' */
+	save	%g0, %g0, %g0		/* Save to window 'T' */
+	/* Where she'll trap nobody knows... */
+
+	/* LOCATION: Window 'T' */
+
+fwin_user_finish_up:
+	/* LOCATION: Window 'T' */
+
+	wr	%t_psr, 0x0, %psr
+	WRITE_PAUSE	
+
+	jmp	%t_pc
+	rett	%t_npc
+
+	/* Here come the architecture specific checks for stack.
+	 * mappings.  Note that unlike the window overflow handler
+	 * we only need to check whether the user can read from
+	 * the appropriate addresses.  Also note that we are in
+	 * an invalid window which will be loaded, and this means
+	 * that until we actually load the window up we are free
+	 * to use any of the local registers contained within.
+	 *
+	 * On success these routine branch to fwin_user_stack_is_ok
+	 * if the area at %sp is user readable and the window still
+	 * needs to be loaded, else fwin_user_finish_up if the
+	 * routine has done the loading itself.  On failure (bogus
+	 * user stack) the routine shall branch to the label called
+	 * fwin_user_stack_is_bolixed.
+	 *
+	 * Contrary to the arch-specific window overflow stack
+	 * check routines in wof.S, these routines are free to use
+	 * any of the local registers they want to as this window
+	 * does not belong to anyone at this point, however the
+	 * outs and ins are still verboten as they are part of
+	 * 'someone elses' window possibly.
+	 */
+
+	.globl	srmmu_fwin_stackchk
+srmmu_fwin_stackchk:
+	/* LOCATION: Window 'W' */
+
+	/* Caller did 'andcc %sp, 0x7, %g0' */
+	bne	fwin_user_stack_is_bolixed
+	 sethi   %hi(PAGE_OFFSET), %l5
+
+	/* Check if the users stack is in kernel vma, then our
+	 * trial and error technique below would succeed for
+	 * the 'wrong' reason.
+	 */
+	mov	AC_M_SFSR, %l4
+	cmp	%l5, %sp
+	bleu	fwin_user_stack_is_bolixed
+LEON_PI( lda	[%l4] ASI_LEON_MMUREGS, %g0)	! clear fault status
+SUN_PI_( lda	[%l4] ASI_M_MMUREGS, %g0)	! clear fault status
+
+	/* The technique is, turn off faults on this processor,
+	 * just let the load rip, then check the sfsr to see if
+	 * a fault did occur.  Then we turn on fault traps again
+	 * and branch conditionally based upon what happened.
+	 */
+LEON_PI(lda	[%g0] ASI_LEON_MMUREGS, %l5)	! read mmu-ctrl reg
+SUN_PI_(lda	[%g0] ASI_M_MMUREGS, %l5)	! read mmu-ctrl reg
+	or	%l5, 0x2, %l5			! turn on no-fault bit
+LEON_PI(sta	%l5, [%g0] ASI_LEON_MMUREGS)	! store it
+SUN_PI_(sta	%l5, [%g0] ASI_M_MMUREGS)	! store it
+
+	/* Cross fingers and go for it. */
+	LOAD_WINDOW(sp)
+
+	/* A penny 'saved'... */
+	save	%g0, %g0, %g0
+	save	%g0, %g0, %g0
+	/* Is a BADTRAP earned... */
+
+	/* LOCATION: Window 'T' */
+
+LEON_PI(lda	[%g0] ASI_LEON_MMUREGS, %twin_tmp1)	! load mmu-ctrl again
+SUN_PI_(lda	[%g0] ASI_M_MMUREGS, %twin_tmp1)	! load mmu-ctrl again
+	andn	%twin_tmp1, 0x2, %twin_tmp1		! clear no-fault bit
+LEON_PI(sta	%twin_tmp1, [%g0] ASI_LEON_MMUREGS)	! store it
+SUN_PI_(sta	%twin_tmp1, [%g0] ASI_M_MMUREGS)	! store it
+
+	mov	AC_M_SFAR, %twin_tmp2
+LEON_PI(lda	[%twin_tmp2] ASI_LEON_MMUREGS, %g0)	! read fault address
+SUN_PI_(lda	[%twin_tmp2] ASI_M_MMUREGS, %g0)	! read fault address
+
+	mov	AC_M_SFSR, %twin_tmp2
+LEON_PI(lda	[%twin_tmp2] ASI_LEON_MMUREGS, %twin_tmp2) ! read fault status
+SUN_PI_(lda	[%twin_tmp2] ASI_M_MMUREGS, %twin_tmp2)	   ! read fault status
+	andcc	%twin_tmp2, 0x2, %g0			   ! did fault occur?
+
+	bne	1f					   ! yep, cleanup
+	 nop
+
+	wr	%t_psr, 0x0, %psr
+	nop
+	b	fwin_user_finish_up + 0x4
+	 nop
+
+	/* Did I ever tell you about my window lobotomy?
+	 * anyways... fwin_user_stack_is_bolixed expects
+	 * to be in window 'W' so make it happy or else
+	 * we watchdog badly.
+	 */
+1:
+	restore	%g0, %g0, %g0
+	b	fwin_user_stack_is_bolixed	! oh well
+	 restore	%g0, %g0, %g0