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, 304 insertions, 0 deletions

diff --git a/arch/ia64/lib/memcpy.S b/arch/ia64/lib/memcpy.S
new file mode 100644
index 000000000..91a625fdd
--- /dev/null
+++ b/arch/ia64/lib/memcpy.S
@@ -0,0 +1,304 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ *
+ * Optimized version of the standard memcpy() function
+ *
+ * Inputs:
+ * 	in0:	destination address
+ *	in1:	source address
+ *	in2:	number of bytes to copy
+ * Output:
+ * 	no return value
+ *
+ * Copyright (C) 2000-2001 Hewlett-Packard Co
+ *	Stephane Eranian <eranian@hpl.hp.com>
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+#include <asm/asmmacro.h>
+#include <asm/export.h>
+
+GLOBAL_ENTRY(memcpy)
+
+#	define MEM_LAT	21		/* latency to memory */
+
+#	define dst	r2
+#	define src	r3
+#	define retval	r8
+#	define saved_pfs r9
+#	define saved_lc	r10
+#	define saved_pr	r11
+#	define cnt	r16
+#	define src2	r17
+#	define t0	r18
+#	define t1	r19
+#	define t2	r20
+#	define t3	r21
+#	define t4	r22
+#	define src_end	r23
+
+#	define N	(MEM_LAT + 4)
+#	define Nrot	((N + 7) & ~7)
+
+	/*
+	 * First, check if everything (src, dst, len) is a multiple of eight.  If
+	 * so, we handle everything with no taken branches (other than the loop
+	 * itself) and a small icache footprint.  Otherwise, we jump off to
+	 * the more general copy routine handling arbitrary
+	 * sizes/alignment etc.
+	 */
+	.prologue
+	.save ar.pfs, saved_pfs
+	alloc saved_pfs=ar.pfs,3,Nrot,0,Nrot
+	.save ar.lc, saved_lc
+	mov saved_lc=ar.lc
+	or t0=in0,in1
+	;;
+
+	or t0=t0,in2
+	.save pr, saved_pr
+	mov saved_pr=pr
+
+	.body
+
+	cmp.eq p6,p0=in2,r0	// zero length?
+	mov retval=in0		// return dst
+(p6)	br.ret.spnt.many rp	// zero length, return immediately
+	;;
+
+	mov dst=in0		// copy because of rotation
+	shr.u cnt=in2,3		// number of 8-byte words to copy
+	mov pr.rot=1<<16
+	;;
+
+	adds cnt=-1,cnt		// br.ctop is repeat/until
+	cmp.gtu p7,p0=16,in2	// copying less than 16 bytes?
+	mov ar.ec=N
+	;;
+
+	and t0=0x7,t0
+	mov ar.lc=cnt
+	;;
+	cmp.ne p6,p0=t0,r0
+
+	mov src=in1		// copy because of rotation
+(p7)	br.cond.spnt.few .memcpy_short
+(p6)	br.cond.spnt.few .memcpy_long
+	;;
+	nop.m	0
+	;;
+	nop.m	0
+	nop.i	0
+	;;
+	nop.m	0
+	;;
+	.rotr val[N]
+	.rotp p[N]
+	.align 32
+1: { .mib
+(p[0])	ld8 val[0]=[src],8
+	nop.i 0
+	brp.loop.imp 1b, 2f
+}
+2: { .mfb
+(p[N-1])st8 [dst]=val[N-1],8
+	nop.f 0
+	br.ctop.dptk.few 1b
+}
+	;;
+	mov ar.lc=saved_lc
+	mov pr=saved_pr,-1
+	mov ar.pfs=saved_pfs
+	br.ret.sptk.many rp
+
+	/*
+	 * Small (<16 bytes) unaligned copying is done via a simple byte-at-the-time
+	 * copy loop.  This performs relatively poorly on Itanium, but it doesn't
+	 * get used very often (gcc inlines small copies) and due to atomicity
+	 * issues, we want to avoid read-modify-write of entire words.
+	 */
+	.align 32
+.memcpy_short:
+	adds cnt=-1,in2		// br.ctop is repeat/until
+	mov ar.ec=MEM_LAT
+	brp.loop.imp 1f, 2f
+	;;
+	mov ar.lc=cnt
+	;;
+	nop.m	0
+	;;
+	nop.m	0
+	nop.i	0
+	;;
+	nop.m	0
+	;;
+	nop.m	0
+	;;
+	/*
+	 * It is faster to put a stop bit in the loop here because it makes
+	 * the pipeline shorter (and latency is what matters on short copies).
+	 */
+	.align 32
+1: { .mib
+(p[0])	ld1 val[0]=[src],1
+	nop.i 0
+	brp.loop.imp 1b, 2f
+} ;;
+2: { .mfb
+(p[MEM_LAT-1])st1 [dst]=val[MEM_LAT-1],1
+	nop.f 0
+	br.ctop.dptk.few 1b
+} ;;
+	mov ar.lc=saved_lc
+	mov pr=saved_pr,-1
+	mov ar.pfs=saved_pfs
+	br.ret.sptk.many rp
+
+	/*
+	 * Large (>= 16 bytes) copying is done in a fancy way.  Latency isn't
+	 * an overriding concern here, but throughput is.  We first do
+	 * sub-word copying until the destination is aligned, then we check
+	 * if the source is also aligned.  If so, we do a simple load/store-loop
+	 * until there are less than 8 bytes left over and then we do the tail,
+	 * by storing the last few bytes using sub-word copying.  If the source
+	 * is not aligned, we branch off to the non-congruent loop.
+	 *
+	 *   stage:   op:
+	 *         0  ld
+	 *	   :
+	 * MEM_LAT+3  shrp
+	 * MEM_LAT+4  st
+	 *
+	 * On Itanium, the pipeline itself runs without stalls.  However,  br.ctop
+	 * seems to introduce an unavoidable bubble in the pipeline so the overall
+	 * latency is 2 cycles/iteration.  This gives us a _copy_ throughput
+	 * of 4 byte/cycle.  Still not bad.
+	 */
+#	undef N
+#	undef Nrot
+#	define N	(MEM_LAT + 5)		/* number of stages */
+#	define Nrot	((N+1 + 2 + 7) & ~7)	/* number of rotating regs */
+
+#define LOG_LOOP_SIZE	6
+
+.memcpy_long:
+	alloc t3=ar.pfs,3,Nrot,0,Nrot	// resize register frame
+	and t0=-8,src		// t0 = src & ~7
+	and t2=7,src		// t2 = src & 7
+	;;
+	ld8 t0=[t0]		// t0 = 1st source word
+	adds src2=7,src		// src2 = (src + 7)
+	sub t4=r0,dst		// t4 = -dst
+	;;
+	and src2=-8,src2	// src2 = (src + 7) & ~7
+	shl t2=t2,3		// t2 = 8*(src & 7)
+	shl t4=t4,3		// t4 = 8*(dst & 7)
+	;;
+	ld8 t1=[src2]		// t1 = 1st source word if src is 8-byte aligned, 2nd otherwise
+	sub t3=64,t2		// t3 = 64-8*(src & 7)
+	shr.u t0=t0,t2
+	;;
+	add src_end=src,in2
+	shl t1=t1,t3
+	mov pr=t4,0x38		// (p5,p4,p3)=(dst & 7)
+	;;
+	or t0=t0,t1
+	mov cnt=r0
+	adds src_end=-1,src_end
+	;;
+(p3)	st1 [dst]=t0,1
+(p3)	shr.u t0=t0,8
+(p3)	adds cnt=1,cnt
+	;;
+(p4)	st2 [dst]=t0,2
+(p4)	shr.u t0=t0,16
+(p4)	adds cnt=2,cnt
+	;;
+(p5)	st4 [dst]=t0,4
+(p5)	adds cnt=4,cnt
+	and src_end=-8,src_end	// src_end = last word of source buffer
+	;;
+
+	// At this point, dst is aligned to 8 bytes and there at least 16-7=9 bytes left to copy:
+
+1:{	add src=cnt,src			// make src point to remainder of source buffer
+	sub cnt=in2,cnt			// cnt = number of bytes left to copy
+	mov t4=ip
+  }	;;
+	and src2=-8,src			// align source pointer
+	adds t4=.memcpy_loops-1b,t4
+	mov ar.ec=N
+
+	and t0=7,src			// t0 = src & 7
+	shr.u t2=cnt,3			// t2 = number of 8-byte words left to copy
+	shl cnt=cnt,3			// move bits 0-2 to 3-5
+	;;
+
+	.rotr val[N+1], w[2]
+	.rotp p[N]
+
+	cmp.ne p6,p0=t0,r0		// is src aligned, too?
+	shl t0=t0,LOG_LOOP_SIZE		// t0 = 8*(src & 7)
+	adds t2=-1,t2			// br.ctop is repeat/until
+	;;
+	add t4=t0,t4
+	mov pr=cnt,0x38			// set (p5,p4,p3) to # of bytes last-word bytes to copy
+	mov ar.lc=t2
+	;;
+	nop.m	0
+	;;
+	nop.m	0
+	nop.i	0
+	;;
+	nop.m	0
+	;;
+(p6)	ld8 val[1]=[src2],8		// prime the pump...
+	mov b6=t4
+	br.sptk.few b6
+	;;
+
+.memcpy_tail:
+	// At this point, (p5,p4,p3) are set to the number of bytes left to copy (which is
+	// less than 8) and t0 contains the last few bytes of the src buffer:
+(p5)	st4 [dst]=t0,4
+(p5)	shr.u t0=t0,32
+	mov ar.lc=saved_lc
+	;;
+(p4)	st2 [dst]=t0,2
+(p4)	shr.u t0=t0,16
+	mov ar.pfs=saved_pfs
+	;;
+(p3)	st1 [dst]=t0
+	mov pr=saved_pr,-1
+	br.ret.sptk.many rp
+
+///////////////////////////////////////////////////////
+	.align 64
+
+#define COPY(shift,index)									\
+ 1: { .mib											\
+	(p[0])		ld8 val[0]=[src2],8;							\
+	(p[MEM_LAT+3])	shrp w[0]=val[MEM_LAT+3],val[MEM_LAT+4-index],shift;			\
+			brp.loop.imp 1b, 2f							\
+    };												\
+ 2: { .mfb											\
+	(p[MEM_LAT+4])	st8 [dst]=w[1],8;							\
+			nop.f 0;								\
+			br.ctop.dptk.few 1b;							\
+    };												\
+			;;									\
+			ld8 val[N-1]=[src_end];	/* load last word (may be same as val[N]) */	\
+			;;									\
+			shrp t0=val[N-1],val[N-index],shift;					\
+			br .memcpy_tail
+.memcpy_loops:
+	COPY(0, 1) /* no point special casing this---it doesn't go any faster without shrp */
+	COPY(8, 0)
+	COPY(16, 0)
+	COPY(24, 0)
+	COPY(32, 0)
+	COPY(40, 0)
+	COPY(48, 0)
+	COPY(56, 0)
+
+END(memcpy)
+EXPORT_SYMBOL(memcpy)