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, 392 insertions, 0 deletions

diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c
new file mode 100644
index 000000000..99bd24d0e
--- /dev/null
+++ b/drivers/i2c/busses/i2c-au1550.c
@@ -0,0 +1,392 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * i2c-au1550.c: SMBus (i2c) adapter for Alchemy PSC interface
+ * Copyright (C) 2004 Embedded Edge, LLC <dan@embeddededge.com>
+ *
+ * 2.6 port by Matt Porter <mporter@kernel.crashing.org>
+ *
+ * The documentation describes this as an SMBus controller, but it doesn't
+ * understand any of the SMBus protocol in hardware.  It's really an I2C
+ * controller that could emulate most of the SMBus in software.
+ *
+ * This is just a skeleton adapter to use with the Au1550 PSC
+ * algorithm.  It was developed for the Pb1550, but will work with
+ * any Au1550 board that has a similar PSC configuration.
+ */
+
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/errno.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1xxx_psc.h>
+
+#define PSC_SEL		0x00
+#define PSC_CTRL	0x04
+#define PSC_SMBCFG	0x08
+#define PSC_SMBMSK	0x0C
+#define PSC_SMBPCR	0x10
+#define PSC_SMBSTAT	0x14
+#define PSC_SMBEVNT	0x18
+#define PSC_SMBTXRX	0x1C
+#define PSC_SMBTMR	0x20
+
+struct i2c_au1550_data {
+	void __iomem *psc_base;
+	int	xfer_timeout;
+	struct i2c_adapter adap;
+};
+
+static inline void WR(struct i2c_au1550_data *a, int r, unsigned long v)
+{
+	__raw_writel(v, a->psc_base + r);
+	wmb();
+}
+
+static inline unsigned long RD(struct i2c_au1550_data *a, int r)
+{
+	return __raw_readl(a->psc_base + r);
+}
+
+static int wait_xfer_done(struct i2c_au1550_data *adap)
+{
+	int i;
+
+	/* Wait for Tx Buffer Empty */
+	for (i = 0; i < adap->xfer_timeout; i++) {
+		if (RD(adap, PSC_SMBSTAT) & PSC_SMBSTAT_TE)
+			return 0;
+
+		udelay(1);
+	}
+
+	return -ETIMEDOUT;
+}
+
+static int wait_ack(struct i2c_au1550_data *adap)
+{
+	unsigned long stat;
+
+	if (wait_xfer_done(adap))
+		return -ETIMEDOUT;
+
+	stat = RD(adap, PSC_SMBEVNT);
+	if ((stat & (PSC_SMBEVNT_DN | PSC_SMBEVNT_AN | PSC_SMBEVNT_AL)) != 0)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+static int wait_master_done(struct i2c_au1550_data *adap)
+{
+	int i;
+
+	/* Wait for Master Done. */
+	for (i = 0; i < 2 * adap->xfer_timeout; i++) {
+		if ((RD(adap, PSC_SMBEVNT) & PSC_SMBEVNT_MD) != 0)
+			return 0;
+		udelay(1);
+	}
+
+	return -ETIMEDOUT;
+}
+
+static int
+do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd, int q)
+{
+	unsigned long stat;
+
+	/* Reset the FIFOs, clear events. */
+	stat = RD(adap, PSC_SMBSTAT);
+	WR(adap, PSC_SMBEVNT, PSC_SMBEVNT_ALLCLR);
+
+	if (!(stat & PSC_SMBSTAT_TE) || !(stat & PSC_SMBSTAT_RE)) {
+		WR(adap, PSC_SMBPCR, PSC_SMBPCR_DC);
+		while ((RD(adap, PSC_SMBPCR) & PSC_SMBPCR_DC) != 0)
+			cpu_relax();
+		udelay(50);
+	}
+
+	/* Write out the i2c chip address and specify operation */
+	addr <<= 1;
+	if (rd)
+		addr |= 1;
+
+	/* zero-byte xfers stop immediately */
+	if (q)
+		addr |= PSC_SMBTXRX_STP;
+
+	/* Put byte into fifo, start up master. */
+	WR(adap, PSC_SMBTXRX, addr);
+	WR(adap, PSC_SMBPCR, PSC_SMBPCR_MS);
+	if (wait_ack(adap))
+		return -EIO;
+	return (q) ? wait_master_done(adap) : 0;
+}
+
+static int wait_for_rx_byte(struct i2c_au1550_data *adap, unsigned char *out)
+{
+	int j;
+
+	if (wait_xfer_done(adap))
+		return -EIO;
+
+	j =  adap->xfer_timeout * 100;
+	do {
+		j--;
+		if (j <= 0)
+			return -EIO;
+
+		if ((RD(adap, PSC_SMBSTAT) & PSC_SMBSTAT_RE) == 0)
+			j = 0;
+		else
+			udelay(1);
+	} while (j > 0);
+
+	*out = RD(adap, PSC_SMBTXRX);
+
+	return 0;
+}
+
+static int i2c_read(struct i2c_au1550_data *adap, unsigned char *buf,
+		    unsigned int len)
+{
+	int i;
+
+	if (len == 0)
+		return 0;
+
+	/* A read is performed by stuffing the transmit fifo with
+	 * zero bytes for timing, waiting for bytes to appear in the
+	 * receive fifo, then reading the bytes.
+	 */
+	i = 0;
+	while (i < (len - 1)) {
+		WR(adap, PSC_SMBTXRX, 0);
+		if (wait_for_rx_byte(adap, &buf[i]))
+			return -EIO;
+
+		i++;
+	}
+
+	/* The last byte has to indicate transfer done. */
+	WR(adap, PSC_SMBTXRX, PSC_SMBTXRX_STP);
+	if (wait_master_done(adap))
+		return -EIO;
+
+	buf[i] = (unsigned char)(RD(adap, PSC_SMBTXRX) & 0xff);
+	return 0;
+}
+
+static int i2c_write(struct i2c_au1550_data *adap, unsigned char *buf,
+		     unsigned int len)
+{
+	int i;
+	unsigned long data;
+
+	if (len == 0)
+		return 0;
+
+	i = 0;
+	while (i < (len-1)) {
+		data = buf[i];
+		WR(adap, PSC_SMBTXRX, data);
+		if (wait_ack(adap))
+			return -EIO;
+		i++;
+	}
+
+	/* The last byte has to indicate transfer done. */
+	data = buf[i];
+	data |= PSC_SMBTXRX_STP;
+	WR(adap, PSC_SMBTXRX, data);
+	if (wait_master_done(adap))
+		return -EIO;
+	return 0;
+}
+
+static int
+au1550_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)
+{
+	struct i2c_au1550_data *adap = i2c_adap->algo_data;
+	struct i2c_msg *p;
+	int i, err = 0;
+
+	WR(adap, PSC_CTRL, PSC_CTRL_ENABLE);
+
+	for (i = 0; !err && i < num; i++) {
+		p = &msgs[i];
+		err = do_address(adap, p->addr, p->flags & I2C_M_RD,
+				 (p->len == 0));
+		if (err || !p->len)
+			continue;
+		if (p->flags & I2C_M_RD)
+			err = i2c_read(adap, p->buf, p->len);
+		else
+			err = i2c_write(adap, p->buf, p->len);
+	}
+
+	/* Return the number of messages processed, or the error code.
+	*/
+	if (err == 0)
+		err = num;
+
+	WR(adap, PSC_CTRL, PSC_CTRL_SUSPEND);
+
+	return err;
+}
+
+static u32 au1550_func(struct i2c_adapter *adap)
+{
+	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+static const struct i2c_algorithm au1550_algo = {
+	.master_xfer	= au1550_xfer,
+	.functionality	= au1550_func,
+};
+
+static void i2c_au1550_setup(struct i2c_au1550_data *priv)
+{
+	unsigned long cfg;
+
+	WR(priv, PSC_CTRL, PSC_CTRL_DISABLE);
+	WR(priv, PSC_SEL, PSC_SEL_PS_SMBUSMODE);
+	WR(priv, PSC_SMBCFG, 0);
+	WR(priv, PSC_CTRL, PSC_CTRL_ENABLE);
+	while ((RD(priv, PSC_SMBSTAT) & PSC_SMBSTAT_SR) == 0)
+		cpu_relax();
+
+	cfg = PSC_SMBCFG_RT_FIFO8 | PSC_SMBCFG_TT_FIFO8 | PSC_SMBCFG_DD_DISABLE;
+	WR(priv, PSC_SMBCFG, cfg);
+
+	/* Divide by 8 to get a 6.25 MHz clock.  The later protocol
+	 * timings are based on this clock.
+	 */
+	cfg |= PSC_SMBCFG_SET_DIV(PSC_SMBCFG_DIV8);
+	WR(priv, PSC_SMBCFG, cfg);
+	WR(priv, PSC_SMBMSK, PSC_SMBMSK_ALLMASK);
+
+	/* Set the protocol timer values.  See Table 71 in the
+	 * Au1550 Data Book for standard timing values.
+	 */
+	WR(priv, PSC_SMBTMR, PSC_SMBTMR_SET_TH(0) | PSC_SMBTMR_SET_PS(20) | \
+		PSC_SMBTMR_SET_PU(20) | PSC_SMBTMR_SET_SH(20) | \
+		PSC_SMBTMR_SET_SU(20) | PSC_SMBTMR_SET_CL(20) | \
+		PSC_SMBTMR_SET_CH(20));
+
+	cfg |= PSC_SMBCFG_DE_ENABLE;
+	WR(priv, PSC_SMBCFG, cfg);
+	while ((RD(priv, PSC_SMBSTAT) & PSC_SMBSTAT_SR) == 0)
+		cpu_relax();
+
+	WR(priv, PSC_CTRL, PSC_CTRL_SUSPEND);
+}
+
+static void i2c_au1550_disable(struct i2c_au1550_data *priv)
+{
+	WR(priv, PSC_SMBCFG, 0);
+	WR(priv, PSC_CTRL, PSC_CTRL_DISABLE);
+}
+
+/*
+ * registering functions to load algorithms at runtime
+ * Prior to calling us, the 50MHz clock frequency and routing
+ * must have been set up for the PSC indicated by the adapter.
+ */
+static int
+i2c_au1550_probe(struct platform_device *pdev)
+{
+	struct i2c_au1550_data *priv;
+	struct resource *r;
+	int ret;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(struct i2c_au1550_data),
+			    GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	priv->psc_base = devm_ioremap_resource(&pdev->dev, r);
+	if (IS_ERR(priv->psc_base))
+		return PTR_ERR(priv->psc_base);
+
+	priv->xfer_timeout = 200;
+
+	priv->adap.nr = pdev->id;
+	priv->adap.algo = &au1550_algo;
+	priv->adap.algo_data = priv;
+	priv->adap.dev.parent = &pdev->dev;
+	strscpy(priv->adap.name, "Au1xxx PSC I2C", sizeof(priv->adap.name));
+
+	/* Now, set up the PSC for SMBus PIO mode. */
+	i2c_au1550_setup(priv);
+
+	ret = i2c_add_numbered_adapter(&priv->adap);
+	if (ret) {
+		i2c_au1550_disable(priv);
+		return ret;
+	}
+
+	platform_set_drvdata(pdev, priv);
+	return 0;
+}
+
+static int i2c_au1550_remove(struct platform_device *pdev)
+{
+	struct i2c_au1550_data *priv = platform_get_drvdata(pdev);
+
+	i2c_del_adapter(&priv->adap);
+	i2c_au1550_disable(priv);
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int i2c_au1550_suspend(struct device *dev)
+{
+	struct i2c_au1550_data *priv = dev_get_drvdata(dev);
+
+	i2c_au1550_disable(priv);
+
+	return 0;
+}
+
+static int i2c_au1550_resume(struct device *dev)
+{
+	struct i2c_au1550_data *priv = dev_get_drvdata(dev);
+
+	i2c_au1550_setup(priv);
+
+	return 0;
+}
+
+static const struct dev_pm_ops i2c_au1550_pmops = {
+	.suspend	= i2c_au1550_suspend,
+	.resume		= i2c_au1550_resume,
+};
+
+#define AU1XPSC_SMBUS_PMOPS (&i2c_au1550_pmops)
+
+#else
+#define AU1XPSC_SMBUS_PMOPS NULL
+#endif
+
+static struct platform_driver au1xpsc_smbus_driver = {
+	.driver = {
+		.name	= "au1xpsc_smbus",
+		.pm	= AU1XPSC_SMBUS_PMOPS,
+	},
+	.probe		= i2c_au1550_probe,
+	.remove		= i2c_au1550_remove,
+};
+
+module_platform_driver(au1xpsc_smbus_driver);
+
+MODULE_AUTHOR("Dan Malek, Embedded Edge, LLC.");
+MODULE_DESCRIPTION("SMBus adapter Alchemy pb1550");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:au1xpsc_smbus");