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, 277 insertions, 0 deletions

diff --git a/drivers/mtd/nand/raw/ndfc.c b/drivers/mtd/nand/raw/ndfc.c
new file mode 100644
index 000000000..338d6b1a1
--- /dev/null
+++ b/drivers/mtd/nand/raw/ndfc.c
@@ -0,0 +1,277 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Overview:
+ *   Platform independent driver for NDFC (NanD Flash Controller)
+ *   integrated into EP440 cores
+ *
+ *   Ported to an OF platform driver by Sean MacLennan
+ *
+ *   The NDFC supports multiple chips, but this driver only supports a
+ *   single chip since I do not have access to any boards with
+ *   multiple chips.
+ *
+ *  Author: Thomas Gleixner
+ *
+ *  Copyright 2006 IBM
+ *  Copyright 2008 PIKA Technologies
+ *    Sean MacLennan <smaclennan@pikatech.com>
+ */
+#include <linux/module.h>
+#include <linux/mtd/rawnand.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/ndfc.h>
+#include <linux/slab.h>
+#include <linux/mtd/mtd.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <asm/io.h>
+
+#define NDFC_MAX_CS    4
+
+struct ndfc_controller {
+	struct platform_device *ofdev;
+	void __iomem *ndfcbase;
+	struct nand_chip chip;
+	int chip_select;
+	struct nand_controller ndfc_control;
+};
+
+static struct ndfc_controller ndfc_ctrl[NDFC_MAX_CS];
+
+static void ndfc_select_chip(struct nand_chip *nchip, int chip)
+{
+	uint32_t ccr;
+	struct ndfc_controller *ndfc = nand_get_controller_data(nchip);
+
+	ccr = in_be32(ndfc->ndfcbase + NDFC_CCR);
+	if (chip >= 0) {
+		ccr &= ~NDFC_CCR_BS_MASK;
+		ccr |= NDFC_CCR_BS(chip + ndfc->chip_select);
+	} else
+		ccr |= NDFC_CCR_RESET_CE;
+	out_be32(ndfc->ndfcbase + NDFC_CCR, ccr);
+}
+
+static void ndfc_hwcontrol(struct nand_chip *chip, int cmd, unsigned int ctrl)
+{
+	struct ndfc_controller *ndfc = nand_get_controller_data(chip);
+
+	if (cmd == NAND_CMD_NONE)
+		return;
+
+	if (ctrl & NAND_CLE)
+		writel(cmd & 0xFF, ndfc->ndfcbase + NDFC_CMD);
+	else
+		writel(cmd & 0xFF, ndfc->ndfcbase + NDFC_ALE);
+}
+
+static int ndfc_ready(struct nand_chip *chip)
+{
+	struct ndfc_controller *ndfc = nand_get_controller_data(chip);
+
+	return in_be32(ndfc->ndfcbase + NDFC_STAT) & NDFC_STAT_IS_READY;
+}
+
+static void ndfc_enable_hwecc(struct nand_chip *chip, int mode)
+{
+	uint32_t ccr;
+	struct ndfc_controller *ndfc = nand_get_controller_data(chip);
+
+	ccr = in_be32(ndfc->ndfcbase + NDFC_CCR);
+	ccr |= NDFC_CCR_RESET_ECC;
+	out_be32(ndfc->ndfcbase + NDFC_CCR, ccr);
+	wmb();
+}
+
+static int ndfc_calculate_ecc(struct nand_chip *chip,
+			      const u_char *dat, u_char *ecc_code)
+{
+	struct ndfc_controller *ndfc = nand_get_controller_data(chip);
+	uint32_t ecc;
+	uint8_t *p = (uint8_t *)&ecc;
+
+	wmb();
+	ecc = in_be32(ndfc->ndfcbase + NDFC_ECC);
+	/* The NDFC uses Smart Media (SMC) bytes order */
+	ecc_code[0] = p[1];
+	ecc_code[1] = p[2];
+	ecc_code[2] = p[3];
+
+	return 0;
+}
+
+/*
+ * Speedups for buffer read/write/verify
+ *
+ * NDFC allows 32bit read/write of data. So we can speed up the buffer
+ * functions. No further checking, as nand_base will always read/write
+ * page aligned.
+ */
+static void ndfc_read_buf(struct nand_chip *chip, uint8_t *buf, int len)
+{
+	struct ndfc_controller *ndfc = nand_get_controller_data(chip);
+	uint32_t *p = (uint32_t *) buf;
+
+	for(;len > 0; len -= 4)
+		*p++ = in_be32(ndfc->ndfcbase + NDFC_DATA);
+}
+
+static void ndfc_write_buf(struct nand_chip *chip, const uint8_t *buf, int len)
+{
+	struct ndfc_controller *ndfc = nand_get_controller_data(chip);
+	uint32_t *p = (uint32_t *) buf;
+
+	for(;len > 0; len -= 4)
+		out_be32(ndfc->ndfcbase + NDFC_DATA, *p++);
+}
+
+/*
+ * Initialize chip structure
+ */
+static int ndfc_chip_init(struct ndfc_controller *ndfc,
+			  struct device_node *node)
+{
+	struct device_node *flash_np;
+	struct nand_chip *chip = &ndfc->chip;
+	struct mtd_info *mtd = nand_to_mtd(chip);
+	int ret;
+
+	chip->legacy.IO_ADDR_R = ndfc->ndfcbase + NDFC_DATA;
+	chip->legacy.IO_ADDR_W = ndfc->ndfcbase + NDFC_DATA;
+	chip->legacy.cmd_ctrl = ndfc_hwcontrol;
+	chip->legacy.dev_ready = ndfc_ready;
+	chip->legacy.select_chip = ndfc_select_chip;
+	chip->legacy.chip_delay = 50;
+	chip->controller = &ndfc->ndfc_control;
+	chip->legacy.read_buf = ndfc_read_buf;
+	chip->legacy.write_buf = ndfc_write_buf;
+	chip->ecc.correct = rawnand_sw_hamming_correct;
+	chip->ecc.hwctl = ndfc_enable_hwecc;
+	chip->ecc.calculate = ndfc_calculate_ecc;
+	chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST;
+	chip->ecc.size = 256;
+	chip->ecc.bytes = 3;
+	chip->ecc.strength = 1;
+	nand_set_controller_data(chip, ndfc);
+
+	mtd->dev.parent = &ndfc->ofdev->dev;
+
+	flash_np = of_get_next_child(node, NULL);
+	if (!flash_np)
+		return -ENODEV;
+	nand_set_flash_node(chip, flash_np);
+
+	mtd->name = kasprintf(GFP_KERNEL, "%s.%pOFn", dev_name(&ndfc->ofdev->dev),
+			      flash_np);
+	if (!mtd->name) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	ret = nand_scan(chip, 1);
+	if (ret)
+		goto err;
+
+	ret = mtd_device_register(mtd, NULL, 0);
+
+err:
+	of_node_put(flash_np);
+	if (ret)
+		kfree(mtd->name);
+	return ret;
+}
+
+static int ndfc_probe(struct platform_device *ofdev)
+{
+	struct ndfc_controller *ndfc;
+	const __be32 *reg;
+	u32 ccr;
+	u32 cs;
+	int err, len;
+
+	/* Read the reg property to get the chip select */
+	reg = of_get_property(ofdev->dev.of_node, "reg", &len);
+	if (reg == NULL || len != 12) {
+		dev_err(&ofdev->dev, "unable read reg property (%d)\n", len);
+		return -ENOENT;
+	}
+
+	cs = be32_to_cpu(reg[0]);
+	if (cs >= NDFC_MAX_CS) {
+		dev_err(&ofdev->dev, "invalid CS number (%d)\n", cs);
+		return -EINVAL;
+	}
+
+	ndfc = &ndfc_ctrl[cs];
+	ndfc->chip_select = cs;
+
+	nand_controller_init(&ndfc->ndfc_control);
+	ndfc->ofdev = ofdev;
+	dev_set_drvdata(&ofdev->dev, ndfc);
+
+	ndfc->ndfcbase = of_iomap(ofdev->dev.of_node, 0);
+	if (!ndfc->ndfcbase) {
+		dev_err(&ofdev->dev, "failed to get memory\n");
+		return -EIO;
+	}
+
+	ccr = NDFC_CCR_BS(ndfc->chip_select);
+
+	/* It is ok if ccr does not exist - just default to 0 */
+	reg = of_get_property(ofdev->dev.of_node, "ccr", NULL);
+	if (reg)
+		ccr |= be32_to_cpup(reg);
+
+	out_be32(ndfc->ndfcbase + NDFC_CCR, ccr);
+
+	/* Set the bank settings if given */
+	reg = of_get_property(ofdev->dev.of_node, "bank-settings", NULL);
+	if (reg) {
+		int offset = NDFC_BCFG0 + (ndfc->chip_select << 2);
+		out_be32(ndfc->ndfcbase + offset, be32_to_cpup(reg));
+	}
+
+	err = ndfc_chip_init(ndfc, ofdev->dev.of_node);
+	if (err) {
+		iounmap(ndfc->ndfcbase);
+		return err;
+	}
+
+	return 0;
+}
+
+static int ndfc_remove(struct platform_device *ofdev)
+{
+	struct ndfc_controller *ndfc = dev_get_drvdata(&ofdev->dev);
+	struct nand_chip *chip = &ndfc->chip;
+	struct mtd_info *mtd = nand_to_mtd(chip);
+	int ret;
+
+	ret = mtd_device_unregister(mtd);
+	WARN_ON(ret);
+	nand_cleanup(chip);
+	kfree(mtd->name);
+
+	return 0;
+}
+
+static const struct of_device_id ndfc_match[] = {
+	{ .compatible = "ibm,ndfc", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ndfc_match);
+
+static struct platform_driver ndfc_driver = {
+	.driver = {
+		.name = "ndfc",
+		.of_match_table = ndfc_match,
+	},
+	.probe = ndfc_probe,
+	.remove = ndfc_remove,
+};
+
+module_platform_driver(ndfc_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
+MODULE_DESCRIPTION("OF Platform driver for NDFC");