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, 321 insertions, 0 deletions

diff --git a/drivers/spi/spi-gxp.c b/drivers/spi/spi-gxp.c
new file mode 100644
index 000000000..c900c2f39
--- /dev/null
+++ b/drivers/spi/spi-gxp.c
@@ -0,0 +1,321 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Copyright (C) 2022 Hewlett-Packard Development Company, L.P. */
+
+#include <linux/iopoll.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/spi-mem.h>
+
+#define GXP_SPI0_MAX_CHIPSELECT	2
+#define GXP_SPI_SLEEP_TIME	1
+#define GXP_SPI_TIMEOUT (130 * 1000000 / GXP_SPI_SLEEP_TIME)
+
+#define MANUAL_MODE		0
+#define DIRECT_MODE		1
+#define SPILDAT_LEN		256
+
+#define OFFSET_SPIMCFG		0x0
+#define OFFSET_SPIMCTRL		0x4
+#define OFFSET_SPICMD		0x5
+#define OFFSET_SPIDCNT		0x6
+#define OFFSET_SPIADDR		0x8
+#define OFFSET_SPIINTSTS	0xc
+
+#define SPIMCTRL_START		0x01
+#define SPIMCTRL_BUSY		0x02
+#define SPIMCTRL_DIR		0x08
+
+struct gxp_spi;
+
+struct gxp_spi_chip {
+	struct gxp_spi *spifi;
+	u32 cs;
+};
+
+struct gxp_spi_data {
+	u32 max_cs;
+	u32 mode_bits;
+};
+
+struct gxp_spi {
+	const struct gxp_spi_data *data;
+	void __iomem *reg_base;
+	void __iomem *dat_base;
+	void __iomem *dir_base;
+	struct device *dev;
+	struct gxp_spi_chip chips[GXP_SPI0_MAX_CHIPSELECT];
+};
+
+static void gxp_spi_set_mode(struct gxp_spi *spifi, int mode)
+{
+	u8 value;
+	void __iomem *reg_base = spifi->reg_base;
+
+	value = readb(reg_base + OFFSET_SPIMCTRL);
+
+	if (mode == MANUAL_MODE) {
+		writeb(0x55, reg_base + OFFSET_SPICMD);
+		writeb(0xaa, reg_base + OFFSET_SPICMD);
+		value &= ~0x30;
+	} else {
+		value |= 0x30;
+	}
+	writeb(value, reg_base + OFFSET_SPIMCTRL);
+}
+
+static int gxp_spi_read_reg(struct gxp_spi_chip *chip, const struct spi_mem_op *op)
+{
+	int ret;
+	struct gxp_spi *spifi = chip->spifi;
+	void __iomem *reg_base = spifi->reg_base;
+	u32 value;
+
+	value = readl(reg_base + OFFSET_SPIMCFG);
+	value &= ~(1 << 24);
+	value |= (chip->cs << 24);
+	value &= ~(0x07 << 16);
+	value &= ~(0x1f << 19);
+	writel(value, reg_base + OFFSET_SPIMCFG);
+
+	writel(0, reg_base + OFFSET_SPIADDR);
+
+	writeb(op->cmd.opcode, reg_base + OFFSET_SPICMD);
+
+	writew(op->data.nbytes, reg_base + OFFSET_SPIDCNT);
+
+	value = readb(reg_base + OFFSET_SPIMCTRL);
+	value &= ~SPIMCTRL_DIR;
+	value |= SPIMCTRL_START;
+
+	writeb(value, reg_base + OFFSET_SPIMCTRL);
+
+	ret = readb_poll_timeout(reg_base + OFFSET_SPIMCTRL, value,
+				 !(value & SPIMCTRL_BUSY),
+				 GXP_SPI_SLEEP_TIME, GXP_SPI_TIMEOUT);
+	if (ret) {
+		dev_warn(spifi->dev, "read reg busy time out\n");
+		return ret;
+	}
+
+	memcpy_fromio(op->data.buf.in, spifi->dat_base, op->data.nbytes);
+	return ret;
+}
+
+static int gxp_spi_write_reg(struct gxp_spi_chip *chip, const struct spi_mem_op *op)
+{
+	int ret;
+	struct gxp_spi *spifi = chip->spifi;
+	void __iomem *reg_base = spifi->reg_base;
+	u32 value;
+
+	value = readl(reg_base + OFFSET_SPIMCFG);
+	value &= ~(1 << 24);
+	value |= (chip->cs << 24);
+	value &= ~(0x07 << 16);
+	value &= ~(0x1f << 19);
+	writel(value, reg_base + OFFSET_SPIMCFG);
+
+	writel(0, reg_base + OFFSET_SPIADDR);
+
+	writeb(op->cmd.opcode, reg_base + OFFSET_SPICMD);
+
+	memcpy_toio(spifi->dat_base, op->data.buf.in, op->data.nbytes);
+
+	writew(op->data.nbytes, reg_base + OFFSET_SPIDCNT);
+
+	value = readb(reg_base + OFFSET_SPIMCTRL);
+	value |= SPIMCTRL_DIR;
+	value |= SPIMCTRL_START;
+
+	writeb(value, reg_base + OFFSET_SPIMCTRL);
+
+	ret = readb_poll_timeout(reg_base + OFFSET_SPIMCTRL, value,
+				 !(value & SPIMCTRL_BUSY),
+				 GXP_SPI_SLEEP_TIME, GXP_SPI_TIMEOUT);
+	if (ret)
+		dev_warn(spifi->dev, "write reg busy time out\n");
+
+	return ret;
+}
+
+static ssize_t gxp_spi_read(struct gxp_spi_chip *chip, const struct spi_mem_op *op)
+{
+	struct gxp_spi *spifi = chip->spifi;
+	u32 offset = op->addr.val;
+
+	if (chip->cs == 0)
+		offset += 0x4000000;
+
+	memcpy_fromio(op->data.buf.in, spifi->dir_base + offset, op->data.nbytes);
+
+	return 0;
+}
+
+static ssize_t gxp_spi_write(struct gxp_spi_chip *chip, const struct spi_mem_op *op)
+{
+	struct gxp_spi *spifi = chip->spifi;
+	void __iomem *reg_base = spifi->reg_base;
+	u32 write_len;
+	u32 value;
+	int ret;
+
+	write_len = op->data.nbytes;
+	if (write_len > SPILDAT_LEN)
+		write_len = SPILDAT_LEN;
+
+	value = readl(reg_base + OFFSET_SPIMCFG);
+	value &= ~(1 << 24);
+	value |= (chip->cs << 24);
+	value &= ~(0x07 << 16);
+	value |= (op->addr.nbytes << 16);
+	value &= ~(0x1f << 19);
+	writel(value, reg_base + OFFSET_SPIMCFG);
+
+	writel(op->addr.val, reg_base + OFFSET_SPIADDR);
+
+	writeb(op->cmd.opcode, reg_base + OFFSET_SPICMD);
+
+	writew(write_len, reg_base + OFFSET_SPIDCNT);
+
+	memcpy_toio(spifi->dat_base, op->data.buf.in, write_len);
+
+	value = readb(reg_base + OFFSET_SPIMCTRL);
+	value |= SPIMCTRL_DIR;
+	value |= SPIMCTRL_START;
+
+	writeb(value, reg_base + OFFSET_SPIMCTRL);
+
+	ret = readb_poll_timeout(reg_base + OFFSET_SPIMCTRL, value,
+				 !(value & SPIMCTRL_BUSY),
+				 GXP_SPI_SLEEP_TIME, GXP_SPI_TIMEOUT);
+	if (ret) {
+		dev_warn(spifi->dev, "write busy time out\n");
+		return ret;
+	}
+
+	return write_len;
+}
+
+static int do_gxp_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op *op)
+{
+	struct gxp_spi *spifi = spi_controller_get_devdata(mem->spi->master);
+	struct gxp_spi_chip *chip = &spifi->chips[mem->spi->chip_select];
+	int ret;
+
+	if (op->data.dir == SPI_MEM_DATA_IN) {
+		if (!op->addr.nbytes)
+			ret = gxp_spi_read_reg(chip, op);
+		else
+			ret = gxp_spi_read(chip, op);
+	} else {
+		if (!op->addr.nbytes)
+			ret = gxp_spi_write_reg(chip, op);
+		else
+			ret = gxp_spi_write(chip, op);
+	}
+
+	return ret;
+}
+
+static int gxp_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op *op)
+{
+	int ret;
+
+	ret = do_gxp_exec_mem_op(mem, op);
+	if (ret)
+		dev_err(&mem->spi->dev, "operation failed: %d", ret);
+
+	return ret;
+}
+
+static const struct spi_controller_mem_ops gxp_spi_mem_ops = {
+	.exec_op = gxp_exec_mem_op,
+};
+
+static int gxp_spi_setup(struct spi_device *spi)
+{
+	struct gxp_spi *spifi = spi_controller_get_devdata(spi->master);
+	unsigned int cs = spi->chip_select;
+	struct gxp_spi_chip *chip = &spifi->chips[cs];
+
+	chip->spifi = spifi;
+	chip->cs = cs;
+
+	gxp_spi_set_mode(spifi, MANUAL_MODE);
+
+	return 0;
+}
+
+static int gxp_spifi_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	const struct gxp_spi_data *data;
+	struct spi_controller *ctlr;
+	struct gxp_spi *spifi;
+	int ret;
+
+	data = of_device_get_match_data(&pdev->dev);
+
+	ctlr = devm_spi_alloc_master(dev, sizeof(*spifi));
+	if (!ctlr)
+		return -ENOMEM;
+
+	spifi = spi_controller_get_devdata(ctlr);
+
+	platform_set_drvdata(pdev, spifi);
+	spifi->data = data;
+	spifi->dev = dev;
+
+	spifi->reg_base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(spifi->reg_base))
+		return PTR_ERR(spifi->reg_base);
+
+	spifi->dat_base = devm_platform_ioremap_resource(pdev, 1);
+	if (IS_ERR(spifi->dat_base))
+		return PTR_ERR(spifi->dat_base);
+
+	spifi->dir_base = devm_platform_ioremap_resource(pdev, 2);
+	if (IS_ERR(spifi->dir_base))
+		return PTR_ERR(spifi->dir_base);
+
+	ctlr->mode_bits = data->mode_bits;
+	ctlr->bus_num = pdev->id;
+	ctlr->mem_ops = &gxp_spi_mem_ops;
+	ctlr->setup = gxp_spi_setup;
+	ctlr->num_chipselect = data->max_cs;
+	ctlr->dev.of_node = dev->of_node;
+
+	ret = devm_spi_register_controller(dev, ctlr);
+	if (ret) {
+		return dev_err_probe(&pdev->dev, ret,
+				     "failed to register spi controller\n");
+	}
+
+	return 0;
+}
+
+static const struct gxp_spi_data gxp_spifi_data = {
+	.max_cs	= 2,
+	.mode_bits = 0,
+};
+
+static const struct of_device_id gxp_spifi_match[] = {
+	{.compatible = "hpe,gxp-spifi", .data = &gxp_spifi_data },
+	{ /* null */ }
+};
+MODULE_DEVICE_TABLE(of, gxp_spifi_match);
+
+static struct platform_driver gxp_spifi_driver = {
+	.probe = gxp_spifi_probe,
+	.driver = {
+		.name = "gxp-spifi",
+		.of_match_table = gxp_spifi_match,
+	},
+};
+module_platform_driver(gxp_spifi_driver);
+
+MODULE_DESCRIPTION("HPE GXP SPI Flash Interface driver");
+MODULE_AUTHOR("Nick Hawkins <nick.hawkins@hpe.com>");
+MODULE_LICENSE("GPL");