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, 153 insertions, 0 deletions

diff --git a/arch/alpha/lib/ev6-csum_ipv6_magic.S b/arch/alpha/lib/ev6-csum_ipv6_magic.S
new file mode 100644
index 000000000..9a73f9070
--- /dev/null
+++ b/arch/alpha/lib/ev6-csum_ipv6_magic.S
@@ -0,0 +1,153 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * arch/alpha/lib/ev6-csum_ipv6_magic.S
+ * 21264 version contributed by Rick Gorton <rick.gorton@alpha-processor.com>
+ *
+ * unsigned short csum_ipv6_magic(struct in6_addr *saddr,
+ *                                struct in6_addr *daddr,
+ *                                __u32 len,
+ *                                unsigned short proto,
+ *                                unsigned int csum);
+ *
+ * Much of the information about 21264 scheduling/coding comes from:
+ *	Compiler Writer's Guide for the Alpha 21264
+ *	abbreviated as 'CWG' in other comments here
+ *	ftp.digital.com/pub/Digital/info/semiconductor/literature/dsc-library.html
+ * Scheduling notation:
+ *	E	- either cluster
+ *	U	- upper subcluster; U0 - subcluster U0; U1 - subcluster U1
+ *	L	- lower subcluster; L0 - subcluster L0; L1 - subcluster L1
+ * Try not to change the actual algorithm if possible for consistency.
+ * Determining actual stalls (other than slotting) doesn't appear to be easy to do.
+ *
+ * unsigned short csum_ipv6_magic(struct in6_addr *saddr,
+ *                                struct in6_addr *daddr,
+ *                                __u32 len,
+ *                                unsigned short proto,
+ *                                unsigned int csum);
+ *
+ * Swap <proto> (takes form 0xaabb)
+ * Then shift it left by 48, so result is:
+ *	0xbbaa0000 00000000
+ * Then turn it back into a sign extended 32-bit item
+ *	0xbbaa0000
+ *
+ * Swap <len> (an unsigned int) using Mike Burrows' 7-instruction sequence
+ * (we can't hide the 3-cycle latency of the unpkbw in the 6-instruction sequence)
+ * Assume input takes form 0xAABBCCDD
+ *
+ * Finally, original 'folding' approach is to split the long into 4 unsigned shorts
+ * add 4 ushorts, resulting in ushort/carry
+ * add carry bits + ushort --> ushort
+ * add carry bits + ushort --> ushort (in case the carry results in an overflow)
+ * Truncate to a ushort.  (took 13 instructions)
+ * From doing some testing, using the approach in checksum.c:from64to16()
+ * results in the same outcome:
+ * split into 2 uints, add those, generating a ulong
+ * add the 3 low ushorts together, generating a uint
+ * a final add of the 2 lower ushorts
+ * truncating the result.
+ *
+ * Misalignment handling added by Ivan Kokshaysky <ink@jurassic.park.msu.ru>
+ * The cost is 16 instructions (~8 cycles), including two extra loads which
+ * may cause additional delay in rare cases (load-load replay traps).
+ */
+
+#include <asm/export.h>
+	.globl csum_ipv6_magic
+	.align 4
+	.ent csum_ipv6_magic
+	.frame $30,0,$26,0
+csum_ipv6_magic:
+	.prologue 0
+
+	ldq_u	$0,0($16)	# L : Latency: 3
+	inslh	$18,7,$4	# U : 0000000000AABBCC
+	ldq_u	$1,8($16)	# L : Latency: 3
+	sll	$19,8,$7	# U : U L U L : 0x00000000 00aabb00
+
+	and	$16,7,$6	# E : src misalignment
+	ldq_u	$5,15($16)	# L : Latency: 3
+	zapnot	$20,15,$20	# U : zero extend incoming csum
+	ldq_u	$2,0($17)	# L : U L U L : Latency: 3
+
+	extql	$0,$6,$0	# U :
+	extqh	$1,$6,$22	# U :
+	ldq_u	$3,8($17)	# L : Latency: 3
+	sll	$19,24,$19	# U : U U L U : 0x000000aa bb000000
+
+	cmoveq	$6,$31,$22	# E : src aligned?
+	ldq_u	$23,15($17)	# L : Latency: 3
+	inswl	$18,3,$18	# U : 000000CCDD000000
+	addl	$19,$7,$19	# E : U L U L : <sign bits>bbaabb00
+
+	or	$0,$22,$0	# E : 1st src word complete
+	extql	$1,$6,$1	# U :
+	or	$18,$4,$18	# E : 000000CCDDAABBCC
+	extqh	$5,$6,$5	# U : L U L U
+
+	and	$17,7,$6	# E : dst misalignment
+	extql	$2,$6,$2	# U :
+	or	$1,$5,$1	# E : 2nd src word complete
+	extqh	$3,$6,$22	# U : L U L U :
+
+	cmoveq	$6,$31,$22	# E : dst aligned?
+	extql	$3,$6,$3	# U :
+	addq	$20,$0,$20	# E : begin summing the words
+	extqh	$23,$6,$23	# U : L U L U :
+
+	srl	$18,16,$4	# U : 0000000000CCDDAA
+	or	$2,$22,$2	# E : 1st dst word complete
+	zap	$19,0x3,$19	# U : <sign bits>bbaa0000
+	or	$3,$23,$3	# E : U L U L : 2nd dst word complete
+
+	cmpult	$20,$0,$0	# E :
+	addq	$20,$1,$20	# E :
+	zapnot	$18,0xa,$18	# U : 00000000DD00BB00
+	zap	$4,0xa,$4	# U : U U L L : 0000000000CC00AA
+
+	or	$18,$4,$18	# E : 00000000DDCCBBAA
+	nop			# E :
+	cmpult	$20,$1,$1	# E :
+	addq	$20,$2,$20	# E : U L U L
+
+	cmpult	$20,$2,$2	# E :
+	addq	$20,$3,$20	# E :
+	cmpult	$20,$3,$3	# E : (1 cycle stall on $20)
+	addq	$20,$18,$20	# E : U L U L (1 cycle stall on $20)
+
+	cmpult	$20,$18,$18	# E :
+	addq	$20,$19,$20	# E : (1 cycle stall on $20)
+	addq	$0,$1,$0	# E : merge the carries back into the csum
+	addq	$2,$3,$2	# E :
+
+	cmpult	$20,$19,$19	# E :
+	addq	$18,$19,$18	# E : (1 cycle stall on $19)
+	addq	$0,$2,$0	# E :
+	addq	$20,$18,$20	# E : U L U L :
+		/* (1 cycle stall on $18, 2 cycles on $20) */
+
+	addq	$0,$20,$0	# E :
+	zapnot	$0,15,$1	# U : Start folding output (1 cycle stall on $0)
+	nop			# E :
+	srl	$0,32,$0	# U : U L U L : (1 cycle stall on $0)
+
+	addq	$1,$0,$1	# E : Finished generating ulong
+	extwl	$1,2,$2		# U : ushort[1] (1 cycle stall on $1)
+	zapnot	$1,3,$0		# U : ushort[0] (1 cycle stall on $1)
+	extwl	$1,4,$1		# U : ushort[2] (1 cycle stall on $1)
+
+	addq	$0,$2,$0	# E
+	addq	$0,$1,$3	# E : Finished generating uint
+		/* (1 cycle stall on $0) */
+	extwl	$3,2,$1		# U : ushort[1] (1 cycle stall on $3)
+	nop			# E : L U L U
+
+	addq	$1,$3,$0	# E : Final carry
+	not	$0,$4		# E : complement (1 cycle stall on $0)
+	zapnot	$4,3,$0		# U : clear upper garbage bits
+		/* (1 cycle stall on $4) */
+	ret			# L0 : L U L U
+
+	.end csum_ipv6_magic
+	EXPORT_SYMBOL(csum_ipv6_magic)