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().
  ...

4 files changed, 192 insertions, 0 deletions

diff --git a/arch/powerpc/purgatory/.gitignore b/arch/powerpc/purgatory/.gitignore
new file mode 100644
index 000000000..5e40575c1
--- /dev/null
+++ b/arch/powerpc/purgatory/.gitignore
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+purgatory.ro
diff --git a/arch/powerpc/purgatory/Makefile b/arch/powerpc/purgatory/Makefile
new file mode 100644
index 000000000..a81d155b8
--- /dev/null
+++ b/arch/powerpc/purgatory/Makefile
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0
+
+KASAN_SANITIZE := n
+
+targets += trampoline_$(BITS).o purgatory.ro
+
+LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined
+
+$(obj)/purgatory.ro: $(obj)/trampoline_$(BITS).o FORCE
+		$(call if_changed,ld)
+
+$(obj)/kexec-purgatory.o: $(obj)/purgatory.ro
+
+obj-y	+= kexec-purgatory.o
diff --git a/arch/powerpc/purgatory/kexec-purgatory.S b/arch/powerpc/purgatory/kexec-purgatory.S
new file mode 100644
index 000000000..f494fd5a0
--- /dev/null
+++ b/arch/powerpc/purgatory/kexec-purgatory.S
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+	.section .rodata, "a"
+
+	.align	8
+kexec_purgatory:
+	.globl	kexec_purgatory
+	.incbin	"arch/powerpc/purgatory/purgatory.ro"
+.Lkexec_purgatory_end:
+
+	.align	8
+kexec_purgatory_size:
+	.globl	kexec_purgatory_size
+	.quad	.Lkexec_purgatory_end - kexec_purgatory
diff --git a/arch/powerpc/purgatory/trampoline_64.S b/arch/powerpc/purgatory/trampoline_64.S
new file mode 100644
index 000000000..b35837c13
--- /dev/null
+++ b/arch/powerpc/purgatory/trampoline_64.S
@@ -0,0 +1,162 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * kexec trampoline
+ *
+ * Based on code taken from kexec-tools and kexec-lite.
+ *
+ * Copyright (C) 2004 - 2005, Milton D Miller II, IBM Corporation
+ * Copyright (C) 2006, Mohan Kumar M, IBM Corporation
+ * Copyright (C) 2013, Anton Blanchard, IBM Corporation
+ */
+
+#include <asm/asm-compat.h>
+#include <asm/crashdump-ppc64.h>
+
+	.balign 256
+	.globl purgatory_start
+purgatory_start:
+	b	master
+
+	/* ABI: possible run_at_load flag at 0x5c */
+	.org purgatory_start + 0x5c
+	.globl run_at_load
+run_at_load:
+	.long 0
+	.size run_at_load, . - run_at_load
+
+	/* ABI: slaves start at 60 with r3=phys */
+	.org purgatory_start + 0x60
+slave:
+	b .
+	/* ABI: end of copied region */
+	.org purgatory_start + 0x100
+	.size purgatory_start, . - purgatory_start
+
+/*
+ * The above 0x100 bytes at purgatory_start are replaced with the
+ * code from the kernel (or next stage) by setup_purgatory().
+ */
+
+master:
+	or	%r1,%r1,%r1	/* low priority to let other threads catchup */
+	isync
+	mr	%r17,%r3	/* save cpu id to r17 */
+	mr	%r15,%r4	/* save physical address in reg15 */
+
+	/* Work out where we're running */
+	bcl	20, 31, 0f
+0:	mflr	%r18
+
+	/*
+	 * Copy BACKUP_SRC_SIZE bytes from BACKUP_SRC_START to
+	 * backup_start 8 bytes at a time.
+	 *
+	 * Use r3 = dest, r4 = src, r5 = size, r6 = count
+	 */
+	ld	%r3, (backup_start - 0b)(%r18)
+	cmpdi	%cr0, %r3, 0
+	beq	.Lskip_copy	/* skip if there is no backup region */
+	lis	%r5, BACKUP_SRC_SIZE@h
+	ori	%r5, %r5, BACKUP_SRC_SIZE@l
+	cmpdi	%cr0, %r5, 0
+	beq	.Lskip_copy	/* skip if copy size is zero */
+	lis	%r4, BACKUP_SRC_START@h
+	ori	%r4, %r4, BACKUP_SRC_START@l
+	li	%r6, 0
+.Lcopy_loop:
+	ldx	%r0, %r6, %r4
+	stdx	%r0, %r6, %r3
+	addi	%r6, %r6, 8
+	cmpld	%cr0, %r6, %r5
+	blt	.Lcopy_loop
+
+.Lskip_copy:
+	or	%r3,%r3,%r3	/* ok now to high priority, lets boot */
+	lis	%r6,0x1
+	mtctr	%r6		/* delay a bit for slaves to catch up */
+	bdnz	.		/* before we overwrite 0-100 again */
+
+	/* load device-tree address */
+	ld	%r3, (dt_offset - 0b)(%r18)
+	mr	%r16,%r3	/* save dt address in reg16 */
+	li	%r4,20
+	LWZX_BE	%r6,%r3,%r4	/* fetch __be32 version number at byte 20 */
+	cmpwi	%cr0,%r6,2	/* v2 or later? */
+	blt	1f
+	li	%r4,28
+	STWX_BE	%r17,%r3,%r4	/* Store my cpu as __be32 at byte 28 */
+1:
+	/* Load opal base and entry values in r8 & r9 respectively */
+	ld	%r8,(opal_base - 0b)(%r18)
+	ld	%r9,(opal_entry - 0b)(%r18)
+
+	/* load the kernel address */
+	ld	%r4,(kernel - 0b)(%r18)
+
+	/* load the run_at_load flag */
+	/* possibly patched by kexec */
+	ld	%r6,(run_at_load - 0b)(%r18)
+	/* and patch it into the kernel */
+	stw	%r6,(0x5c)(%r4)
+
+	mr	%r3,%r16	/* restore dt address */
+
+	li	%r5,0		/* r5 will be 0 for kernel */
+
+	mfmsr	%r11
+	andi.	%r10,%r11,1	/* test MSR_LE */
+	bne	.Little_endian
+
+	mtctr	%r4		/* prepare branch to */
+	bctr			/* start kernel */
+
+.Little_endian:
+	mtsrr0	%r4		/* prepare branch to */
+
+	clrrdi	%r11,%r11,1	/* clear MSR_LE */
+	mtsrr1	%r11
+
+	rfid			/* update MSR and start kernel */
+
+	.balign 8
+	.globl kernel
+kernel:
+	.8byte  0x0
+	.size kernel, . - kernel
+
+	.balign 8
+	.globl dt_offset
+dt_offset:
+	.8byte  0x0
+	.size dt_offset, . - dt_offset
+
+	.balign 8
+	.globl backup_start
+backup_start:
+	.8byte  0x0
+	.size backup_start, . - backup_start
+
+	.balign 8
+	.globl opal_base
+opal_base:
+	.8byte  0x0
+	.size opal_base, . - opal_base
+
+	.balign 8
+	.globl opal_entry
+opal_entry:
+	.8byte  0x0
+	.size opal_entry, . - opal_entry
+
+	.data
+	.balign 8
+.globl purgatory_sha256_digest
+purgatory_sha256_digest:
+	.skip	32
+	.size purgatory_sha256_digest, . - purgatory_sha256_digest
+
+	.balign 8
+.globl purgatory_sha_regions
+purgatory_sha_regions:
+	.skip	8 * 2 * 16
+	.size purgatory_sha_regions, . - purgatory_sha_regions