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, 262 insertions, 0 deletions

diff --git a/drivers/net/ethernet/realtek/atp.h b/drivers/net/ethernet/realtek/atp.h
new file mode 100644
index 000000000..b202184ed
--- /dev/null
+++ b/drivers/net/ethernet/realtek/atp.h
@@ -0,0 +1,262 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Linux header file for the ATP pocket ethernet adapter. */
+/* v1.09 8/9/2000 becker@scyld.com. */
+
+#include <linux/if_ether.h>
+#include <linux/types.h>
+
+/* The header prepended to received packets. */
+struct rx_header {
+	ushort pad;		/* Pad. */
+	ushort rx_count;
+	ushort rx_status;	/* Unknown bit assignments :-<.  */
+	ushort cur_addr;	/* Apparently the current buffer address(?) */
+};
+
+#define PAR_DATA	0
+#define PAR_STATUS	1
+#define PAR_CONTROL 2
+
+#define Ctrl_LNibRead	0x08	/* LP_PSELECP */
+#define Ctrl_HNibRead	0
+#define Ctrl_LNibWrite	0x08	/* LP_PSELECP */
+#define Ctrl_HNibWrite	0
+#define Ctrl_SelData	0x04	/* LP_PINITP */
+#define Ctrl_IRQEN	0x10	/* LP_PINTEN */
+
+#define EOW	0xE0
+#define EOC	0xE0
+#define WrAddr	0x40	/* Set address of EPLC read, write register. */
+#define RdAddr	0xC0
+#define HNib	0x10
+
+enum page0_regs {
+	/* The first six registers hold
+	 * the ethernet physical station address.
+	 */
+	PAR0 = 0, PAR1 = 1, PAR2 = 2, PAR3 = 3, PAR4 = 4, PAR5 = 5,
+	TxCNT0 = 6, TxCNT1 = 7,		/* The transmit byte count. */
+	TxSTAT = 8, RxSTAT = 9,		/* Tx and Rx status. */
+	ISR = 10, IMR = 11,		/* Interrupt status and mask. */
+	CMR1 = 12,			/* Command register 1. */
+	CMR2 = 13,			/* Command register 2. */
+	MODSEL = 14,		/* Mode select register. */
+	MAR = 14,			/* Memory address register (?). */
+	CMR2_h = 0x1d,
+};
+
+enum eepage_regs {
+	PROM_CMD = 6,
+	PROM_DATA = 7	/* Note that PROM_CMD is in the "high" bits. */
+};
+
+#define ISR_TxOK	0x01
+#define ISR_RxOK	0x04
+#define ISR_TxErr	0x02
+#define ISRh_RxErr	0x11	/* ISR, high nibble */
+
+#define CMR1h_MUX	0x08	/* Select printer multiplexor on 8012. */
+#define CMR1h_RESET	0x04	/* Reset. */
+#define CMR1h_RxENABLE	0x02	/* Rx unit enable.  */
+#define CMR1h_TxENABLE	0x01	/* Tx unit enable.  */
+#define CMR1h_TxRxOFF	0x00
+#define CMR1_ReXmit	0x08	/* Trigger a retransmit. */
+#define CMR1_Xmit	0x04	/* Trigger a transmit. */
+#define	CMR1_IRQ	0x02	/* Interrupt active. */
+#define	CMR1_BufEnb	0x01	/* Enable the buffer(?). */
+#define	CMR1_NextPkt	0x01	/* Enable the buffer(?). */
+
+#define CMR2_NULL	8
+#define CMR2_IRQOUT	9
+#define CMR2_RAMTEST	10
+#define CMR2_EEPROM	12	/* Set to page 1, for reading the EEPROM. */
+
+#define CMR2h_OFF	0	/* No accept mode. */
+#define CMR2h_Physical	1	/* Accept a physical address match only. */
+#define CMR2h_Normal	2	/* Accept physical and broadcast address. */
+#define CMR2h_PROMISC	3	/* Promiscuous mode. */
+
+/* An inline function used below: it differs from inb() by explicitly
+ * return an unsigned char, saving a truncation.
+ */
+static inline unsigned char inbyte(unsigned short port)
+{
+	unsigned char _v;
+
+	__asm__ __volatile__ ("inb %w1,%b0" : "=a" (_v) : "d" (port));
+	return _v;
+}
+
+/* Read register OFFSET.
+ * This command should always be terminated with read_end().
+ */
+static inline unsigned char read_nibble(short port, unsigned char offset)
+{
+	unsigned char retval;
+
+	outb(EOC+offset, port + PAR_DATA);
+	outb(RdAddr+offset, port + PAR_DATA);
+	inbyte(port + PAR_STATUS);	/* Settling time delay */
+	retval = inbyte(port + PAR_STATUS);
+	outb(EOC+offset, port + PAR_DATA);
+
+	return retval;
+}
+
+/* Functions for bulk data read.  The interrupt line is always disabled. */
+/* Get a byte using read mode 0, reading data from the control lines. */
+static inline unsigned char read_byte_mode0(short ioaddr)
+{
+	unsigned char low_nib;
+
+	outb(Ctrl_LNibRead, ioaddr + PAR_CONTROL);
+	inbyte(ioaddr + PAR_STATUS);
+	low_nib = (inbyte(ioaddr + PAR_STATUS) >> 3) & 0x0f;
+	outb(Ctrl_HNibRead, ioaddr + PAR_CONTROL);
+	inbyte(ioaddr + PAR_STATUS);	/* Settling time delay -- needed!  */
+	inbyte(ioaddr + PAR_STATUS);	/* Settling time delay -- needed!  */
+	return low_nib | ((inbyte(ioaddr + PAR_STATUS) << 1) & 0xf0);
+}
+
+/* The same as read_byte_mode0(), but does multiple inb()s for stability. */
+static inline unsigned char read_byte_mode2(short ioaddr)
+{
+	unsigned char low_nib;
+
+	outb(Ctrl_LNibRead, ioaddr + PAR_CONTROL);
+	inbyte(ioaddr + PAR_STATUS);
+	low_nib = (inbyte(ioaddr + PAR_STATUS) >> 3) & 0x0f;
+	outb(Ctrl_HNibRead, ioaddr + PAR_CONTROL);
+	inbyte(ioaddr + PAR_STATUS);	/* Settling time delay -- needed!  */
+	return low_nib | ((inbyte(ioaddr + PAR_STATUS) << 1) & 0xf0);
+}
+
+/* Read a byte through the data register. */
+static inline unsigned char read_byte_mode4(short ioaddr)
+{
+	unsigned char low_nib;
+
+	outb(RdAddr | MAR, ioaddr + PAR_DATA);
+	low_nib = (inbyte(ioaddr + PAR_STATUS) >> 3) & 0x0f;
+	outb(RdAddr | HNib | MAR, ioaddr + PAR_DATA);
+	return low_nib | ((inbyte(ioaddr + PAR_STATUS) << 1) & 0xf0);
+}
+
+/* Read a byte through the data register, double reading to allow settling. */
+static inline unsigned char read_byte_mode6(short ioaddr)
+{
+	unsigned char low_nib;
+
+	outb(RdAddr | MAR, ioaddr + PAR_DATA);
+	inbyte(ioaddr + PAR_STATUS);
+	low_nib = (inbyte(ioaddr + PAR_STATUS) >> 3) & 0x0f;
+	outb(RdAddr | HNib | MAR, ioaddr + PAR_DATA);
+	inbyte(ioaddr + PAR_STATUS);
+	return low_nib | ((inbyte(ioaddr + PAR_STATUS) << 1) & 0xf0);
+}
+
+static inline void
+write_reg(short port, unsigned char reg, unsigned char value)
+{
+	unsigned char outval;
+
+	outb(EOC | reg, port + PAR_DATA);
+	outval = WrAddr | reg;
+	outb(outval, port + PAR_DATA);
+	outb(outval, port + PAR_DATA);	/* Double write for PS/2. */
+
+	outval &= 0xf0;
+	outval |= value;
+	outb(outval, port + PAR_DATA);
+	outval &= 0x1f;
+	outb(outval, port + PAR_DATA);
+	outb(outval, port + PAR_DATA);
+
+	outb(EOC | outval, port + PAR_DATA);
+}
+
+static inline void
+write_reg_high(short port, unsigned char reg, unsigned char value)
+{
+	unsigned char outval = EOC | HNib | reg;
+
+	outb(outval, port + PAR_DATA);
+	outval &= WrAddr | HNib | 0x0f;
+	outb(outval, port + PAR_DATA);
+	outb(outval, port + PAR_DATA);	/* Double write for PS/2. */
+
+	outval = WrAddr | HNib | value;
+	outb(outval, port + PAR_DATA);
+	outval &= HNib | 0x0f;		/* HNib | value */
+	outb(outval, port + PAR_DATA);
+	outb(outval, port + PAR_DATA);
+
+	outb(EOC | HNib | outval, port + PAR_DATA);
+}
+
+/* Write a byte out using nibble mode.  The low nibble is written first. */
+static inline void
+write_reg_byte(short port, unsigned char reg, unsigned char value)
+{
+	unsigned char outval;
+
+	outb(EOC | reg, port + PAR_DATA); /* Reset the address register. */
+	outval = WrAddr | reg;
+	outb(outval, port + PAR_DATA);
+	outb(outval, port + PAR_DATA);	/* Double write for PS/2. */
+
+	outb((outval & 0xf0) | (value & 0x0f), port + PAR_DATA);
+	outb(value & 0x0f, port + PAR_DATA);
+	value >>= 4;
+	outb(value, port + PAR_DATA);
+	outb(0x10 | value, port + PAR_DATA);
+	outb(0x10 | value, port + PAR_DATA);
+
+	outb(EOC  | value, port + PAR_DATA); /* Reset the address register. */
+}
+
+/* Bulk data writes to the packet buffer.  The interrupt line remains enabled.
+ * The first, faster method uses only the dataport (data modes 0, 2 & 4).
+ * The second (backup) method uses data and control regs (modes 1, 3 & 5).
+ * It should only be needed when there is skew between the individual data
+ * lines.
+ */
+static inline void write_byte_mode0(short ioaddr, unsigned char value)
+{
+	outb(value & 0x0f, ioaddr + PAR_DATA);
+	outb((value>>4) | 0x10, ioaddr + PAR_DATA);
+}
+
+static inline void write_byte_mode1(short ioaddr, unsigned char value)
+{
+	outb(value & 0x0f, ioaddr + PAR_DATA);
+	outb(Ctrl_IRQEN | Ctrl_LNibWrite, ioaddr + PAR_CONTROL);
+	outb((value>>4) | 0x10, ioaddr + PAR_DATA);
+	outb(Ctrl_IRQEN | Ctrl_HNibWrite, ioaddr + PAR_CONTROL);
+}
+
+/* Write 16bit VALUE to the packet buffer: the same as above just doubled. */
+static inline void write_word_mode0(short ioaddr, unsigned short value)
+{
+	outb(value & 0x0f, ioaddr + PAR_DATA);
+	value >>= 4;
+	outb((value & 0x0f) | 0x10, ioaddr + PAR_DATA);
+	value >>= 4;
+	outb(value & 0x0f, ioaddr + PAR_DATA);
+	value >>= 4;
+	outb((value & 0x0f) | 0x10, ioaddr + PAR_DATA);
+}
+
+/*  EEPROM_Ctrl bits. */
+#define EE_SHIFT_CLK	0x04	/* EEPROM shift clock. */
+#define EE_CS		0x02	/* EEPROM chip select. */
+#define EE_CLK_HIGH	0x12
+#define EE_CLK_LOW	0x16
+#define EE_DATA_WRITE	0x01	/* EEPROM chip data in. */
+#define EE_DATA_READ	0x08	/* EEPROM chip data out. */
+
+/* The EEPROM commands include the alway-set leading bit. */
+#define EE_WRITE_CMD(offset)	(((5 << 6) + (offset)) << 17)
+#define EE_READ(offset)		(((6 << 6) + (offset)) << 17)
+#define EE_ERASE(offset)	(((7 << 6) + (offset)) << 17)
+#define EE_CMD_SIZE	27	/* The command+address+data size. */