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, 359 insertions, 0 deletions

diff --git a/drivers/net/ethernet/micrel/ks8851_par.c b/drivers/net/ethernet/micrel/ks8851_par.c
new file mode 100644
index 000000000..7f4904248
--- /dev/null
+++ b/drivers/net/ethernet/micrel/ks8851_par.c
@@ -0,0 +1,359 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* drivers/net/ethernet/micrel/ks8851.c
+ *
+ * Copyright 2009 Simtec Electronics
+ *	http://www.simtec.co.uk/
+ *	Ben Dooks <ben@simtec.co.uk>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/iopoll.h>
+#include <linux/mii.h>
+
+#include <linux/platform_device.h>
+#include <linux/of_net.h>
+
+#include "ks8851.h"
+
+static int msg_enable;
+
+#define BE3             0x8000      /* Byte Enable 3 */
+#define BE2             0x4000      /* Byte Enable 2 */
+#define BE1             0x2000      /* Byte Enable 1 */
+#define BE0             0x1000      /* Byte Enable 0 */
+
+/**
+ * struct ks8851_net_par - KS8851 Parallel driver private data
+ * @ks8851: KS8851 driver common private data
+ * @lock: Lock to ensure that the device is not accessed when busy.
+ * @hw_addr	: start address of data register.
+ * @hw_addr_cmd	: start address of command register.
+ * @cmd_reg_cache	: command register cached.
+ *
+ * The @lock ensures that the chip is protected when certain operations are
+ * in progress. When the read or write packet transfer is in progress, most
+ * of the chip registers are not accessible until the transfer is finished
+ * and the DMA has been de-asserted.
+ */
+struct ks8851_net_par {
+	struct ks8851_net	ks8851;
+	spinlock_t		lock;
+	void __iomem		*hw_addr;
+	void __iomem		*hw_addr_cmd;
+	u16			cmd_reg_cache;
+};
+
+#define to_ks8851_par(ks) container_of((ks), struct ks8851_net_par, ks8851)
+
+/**
+ * ks8851_lock_par - register access lock
+ * @ks: The chip state
+ * @flags: Spinlock flags
+ *
+ * Claim chip register access lock
+ */
+static void ks8851_lock_par(struct ks8851_net *ks, unsigned long *flags)
+{
+	struct ks8851_net_par *ksp = to_ks8851_par(ks);
+
+	spin_lock_irqsave(&ksp->lock, *flags);
+}
+
+/**
+ * ks8851_unlock_par - register access unlock
+ * @ks: The chip state
+ * @flags: Spinlock flags
+ *
+ * Release chip register access lock
+ */
+static void ks8851_unlock_par(struct ks8851_net *ks, unsigned long *flags)
+{
+	struct ks8851_net_par *ksp = to_ks8851_par(ks);
+
+	spin_unlock_irqrestore(&ksp->lock, *flags);
+}
+
+/**
+ * ks_check_endian - Check whether endianness of the bus is correct
+ * @ks	  : The chip information
+ *
+ * The KS8851-16MLL EESK pin allows selecting the endianness of the 16bit
+ * bus. To maintain optimum performance, the bus endianness should be set
+ * such that it matches the endianness of the CPU.
+ */
+static int ks_check_endian(struct ks8851_net *ks)
+{
+	struct ks8851_net_par *ksp = to_ks8851_par(ks);
+	u16 cider;
+
+	/*
+	 * Read CIDER register first, however read it the "wrong" way around.
+	 * If the endian strap on the KS8851-16MLL in incorrect and the chip
+	 * is operating in different endianness than the CPU, then the meaning
+	 * of BE[3:0] byte-enable bits is also swapped such that:
+	 *    BE[3,2,1,0] becomes BE[1,0,3,2]
+	 *
+	 * Luckily for us, the byte-enable bits are the top four MSbits of
+	 * the address register and the CIDER register is at offset 0xc0.
+	 * Hence, by reading address 0xc0c0, which is not impacted by endian
+	 * swapping, we assert either BE[3:2] or BE[1:0] while reading the
+	 * CIDER register.
+	 *
+	 * If the bus configuration is correct, reading 0xc0c0 asserts
+	 * BE[3:2] and this read returns 0x0000, because to read register
+	 * with bottom two LSbits of address set to 0, BE[1:0] must be
+	 * asserted.
+	 *
+	 * If the bus configuration is NOT correct, reading 0xc0c0 asserts
+	 * BE[1:0] and this read returns non-zero 0x8872 value.
+	 */
+	iowrite16(BE3 | BE2 | KS_CIDER, ksp->hw_addr_cmd);
+	cider = ioread16(ksp->hw_addr);
+	if (!cider)
+		return 0;
+
+	netdev_err(ks->netdev, "incorrect EESK endian strap setting\n");
+
+	return -EINVAL;
+}
+
+/**
+ * ks8851_wrreg16_par - write 16bit register value to chip
+ * @ks: The chip state
+ * @reg: The register address
+ * @val: The value to write
+ *
+ * Issue a write to put the value @val into the register specified in @reg.
+ */
+static void ks8851_wrreg16_par(struct ks8851_net *ks, unsigned int reg,
+			       unsigned int val)
+{
+	struct ks8851_net_par *ksp = to_ks8851_par(ks);
+
+	ksp->cmd_reg_cache = (u16)reg | ((BE1 | BE0) << (reg & 0x02));
+	iowrite16(ksp->cmd_reg_cache, ksp->hw_addr_cmd);
+	iowrite16(val, ksp->hw_addr);
+}
+
+/**
+ * ks8851_rdreg16_par - read 16 bit register from chip
+ * @ks: The chip information
+ * @reg: The register address
+ *
+ * Read a 16bit register from the chip, returning the result
+ */
+static unsigned int ks8851_rdreg16_par(struct ks8851_net *ks, unsigned int reg)
+{
+	struct ks8851_net_par *ksp = to_ks8851_par(ks);
+
+	ksp->cmd_reg_cache = (u16)reg | ((BE1 | BE0) << (reg & 0x02));
+	iowrite16(ksp->cmd_reg_cache, ksp->hw_addr_cmd);
+	return ioread16(ksp->hw_addr);
+}
+
+/**
+ * ks8851_rdfifo_par - read data from the receive fifo
+ * @ks: The device state.
+ * @buff: The buffer address
+ * @len: The length of the data to read
+ *
+ * Issue an RXQ FIFO read command and read the @len amount of data from
+ * the FIFO into the buffer specified by @buff.
+ */
+static void ks8851_rdfifo_par(struct ks8851_net *ks, u8 *buff, unsigned int len)
+{
+	struct ks8851_net_par *ksp = to_ks8851_par(ks);
+
+	netif_dbg(ks, rx_status, ks->netdev,
+		  "%s: %d@%p\n", __func__, len, buff);
+
+	ioread16_rep(ksp->hw_addr, (u16 *)buff + 1, len / 2);
+}
+
+/**
+ * ks8851_wrfifo_par - write packet to TX FIFO
+ * @ks: The device state.
+ * @txp: The sk_buff to transmit.
+ * @irq: IRQ on completion of the packet.
+ *
+ * Send the @txp to the chip. This means creating the relevant packet header
+ * specifying the length of the packet and the other information the chip
+ * needs, such as IRQ on completion. Send the header and the packet data to
+ * the device.
+ */
+static void ks8851_wrfifo_par(struct ks8851_net *ks, struct sk_buff *txp,
+			      bool irq)
+{
+	struct ks8851_net_par *ksp = to_ks8851_par(ks);
+	unsigned int len = ALIGN(txp->len, 4);
+	unsigned int fid = 0;
+
+	netif_dbg(ks, tx_queued, ks->netdev, "%s: skb %p, %d@%p, irq %d\n",
+		  __func__, txp, txp->len, txp->data, irq);
+
+	fid = ks->fid++;
+	fid &= TXFR_TXFID_MASK;
+
+	if (irq)
+		fid |= TXFR_TXIC;	/* irq on completion */
+
+	iowrite16(fid, ksp->hw_addr);
+	iowrite16(txp->len, ksp->hw_addr);
+
+	iowrite16_rep(ksp->hw_addr, txp->data, len / 2);
+}
+
+/**
+ * ks8851_rx_skb_par - receive skbuff
+ * @ks: The device state.
+ * @skb: The skbuff
+ */
+static void ks8851_rx_skb_par(struct ks8851_net *ks, struct sk_buff *skb)
+{
+	netif_rx(skb);
+}
+
+static unsigned int ks8851_rdreg16_par_txqcr(struct ks8851_net *ks)
+{
+	return ks8851_rdreg16_par(ks, KS_TXQCR);
+}
+
+/**
+ * ks8851_start_xmit_par - transmit packet
+ * @skb: The buffer to transmit
+ * @dev: The device used to transmit the packet.
+ *
+ * Called by the network layer to transmit the @skb. Queue the packet for
+ * the device and schedule the necessary work to transmit the packet when
+ * it is free.
+ *
+ * We do this to firstly avoid sleeping with the network device locked,
+ * and secondly so we can round up more than one packet to transmit which
+ * means we can try and avoid generating too many transmit done interrupts.
+ */
+static netdev_tx_t ks8851_start_xmit_par(struct sk_buff *skb,
+					 struct net_device *dev)
+{
+	struct ks8851_net *ks = netdev_priv(dev);
+	netdev_tx_t ret = NETDEV_TX_OK;
+	unsigned long flags;
+	unsigned int txqcr;
+	u16 txmir;
+	int err;
+
+	netif_dbg(ks, tx_queued, ks->netdev,
+		  "%s: skb %p, %d@%p\n", __func__, skb, skb->len, skb->data);
+
+	ks8851_lock_par(ks, &flags);
+
+	txmir = ks8851_rdreg16_par(ks, KS_TXMIR) & 0x1fff;
+
+	if (likely(txmir >= skb->len + 12)) {
+		ks8851_wrreg16_par(ks, KS_RXQCR, ks->rc_rxqcr | RXQCR_SDA);
+		ks8851_wrfifo_par(ks, skb, false);
+		ks8851_wrreg16_par(ks, KS_RXQCR, ks->rc_rxqcr);
+		ks8851_wrreg16_par(ks, KS_TXQCR, TXQCR_METFE);
+
+		err = readx_poll_timeout_atomic(ks8851_rdreg16_par_txqcr, ks,
+						txqcr, !(txqcr & TXQCR_METFE),
+						5, 1000000);
+		if (err)
+			ret = NETDEV_TX_BUSY;
+
+		ks8851_done_tx(ks, skb);
+	} else {
+		ret = NETDEV_TX_BUSY;
+	}
+
+	ks8851_unlock_par(ks, &flags);
+
+	return ret;
+}
+
+static int ks8851_probe_par(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct ks8851_net_par *ksp;
+	struct net_device *netdev;
+	struct ks8851_net *ks;
+	int ret;
+
+	netdev = devm_alloc_etherdev(dev, sizeof(struct ks8851_net_par));
+	if (!netdev)
+		return -ENOMEM;
+
+	ks = netdev_priv(netdev);
+
+	ks->lock = ks8851_lock_par;
+	ks->unlock = ks8851_unlock_par;
+	ks->rdreg16 = ks8851_rdreg16_par;
+	ks->wrreg16 = ks8851_wrreg16_par;
+	ks->rdfifo = ks8851_rdfifo_par;
+	ks->wrfifo = ks8851_wrfifo_par;
+	ks->start_xmit = ks8851_start_xmit_par;
+	ks->rx_skb = ks8851_rx_skb_par;
+
+#define STD_IRQ (IRQ_LCI |	/* Link Change */	\
+		 IRQ_RXI |	/* RX done */		\
+		 IRQ_RXPSI)	/* RX process stop */
+	ks->rc_ier = STD_IRQ;
+
+	ksp = to_ks8851_par(ks);
+	spin_lock_init(&ksp->lock);
+
+	ksp->hw_addr = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(ksp->hw_addr))
+		return PTR_ERR(ksp->hw_addr);
+
+	ksp->hw_addr_cmd = devm_platform_ioremap_resource(pdev, 1);
+	if (IS_ERR(ksp->hw_addr_cmd))
+		return PTR_ERR(ksp->hw_addr_cmd);
+
+	ret = ks_check_endian(ks);
+	if (ret)
+		return ret;
+
+	netdev->irq = platform_get_irq(pdev, 0);
+	if (netdev->irq < 0)
+		return netdev->irq;
+
+	return ks8851_probe_common(netdev, dev, msg_enable);
+}
+
+static int ks8851_remove_par(struct platform_device *pdev)
+{
+	ks8851_remove_common(&pdev->dev);
+
+	return 0;
+}
+
+static const struct of_device_id ks8851_match_table[] = {
+	{ .compatible = "micrel,ks8851-mll" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ks8851_match_table);
+
+static struct platform_driver ks8851_driver = {
+	.driver = {
+		.name = "ks8851",
+		.of_match_table = ks8851_match_table,
+		.pm = &ks8851_pm_ops,
+	},
+	.probe = ks8851_probe_par,
+	.remove = ks8851_remove_par,
+};
+module_platform_driver(ks8851_driver);
+
+MODULE_DESCRIPTION("KS8851 Network driver");
+MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
+MODULE_LICENSE("GPL");
+
+module_param_named(message, msg_enable, int, 0);
+MODULE_PARM_DESC(message, "Message verbosity level (0=none, 31=all)");