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, 314 insertions, 0 deletions

diff --git a/drivers/net/ethernet/ibm/emac/rgmii.c b/drivers/net/ethernet/ibm/emac/rgmii.c
new file mode 100644
index 000000000..242ef976f
--- /dev/null
+++ b/drivers/net/ethernet/ibm/emac/rgmii.c
@@ -0,0 +1,314 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * drivers/net/ethernet/ibm/emac/rgmii.c
+ *
+ * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support.
+ *
+ * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
+ *                <benh@kernel.crashing.org>
+ *
+ * Based on the arch/ppc version of the driver:
+ *
+ * Copyright (c) 2004, 2005 Zultys Technologies.
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ *
+ * Based on original work by
+ * 	Matt Porter <mporter@kernel.crashing.org>
+ * 	Copyright 2004 MontaVista Software, Inc.
+ */
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/ethtool.h>
+#include <linux/of_address.h>
+#include <asm/io.h>
+
+#include "emac.h"
+#include "debug.h"
+
+// XXX FIXME: Axon seems to support a subset of the RGMII, we
+// thus need to take that into account and possibly change some
+// of the bit settings below that don't seem to quite match the
+// AXON spec
+
+/* RGMIIx_FER */
+#define RGMII_FER_MASK(idx)	(0x7 << ((idx) * 4))
+#define RGMII_FER_RTBI(idx)	(0x4 << ((idx) * 4))
+#define RGMII_FER_RGMII(idx)	(0x5 << ((idx) * 4))
+#define RGMII_FER_TBI(idx)	(0x6 << ((idx) * 4))
+#define RGMII_FER_GMII(idx)	(0x7 << ((idx) * 4))
+#define RGMII_FER_MII(idx)	RGMII_FER_GMII(idx)
+
+/* RGMIIx_SSR */
+#define RGMII_SSR_MASK(idx)	(0x7 << ((idx) * 8))
+#define RGMII_SSR_10(idx)	(0x1 << ((idx) * 8))
+#define RGMII_SSR_100(idx)	(0x2 << ((idx) * 8))
+#define RGMII_SSR_1000(idx)	(0x4 << ((idx) * 8))
+
+/* RGMII bridge supports only GMII/TBI and RGMII/RTBI PHYs */
+static inline int rgmii_valid_mode(int phy_mode)
+{
+	return  phy_interface_mode_is_rgmii(phy_mode) ||
+		phy_mode == PHY_INTERFACE_MODE_GMII ||
+		phy_mode == PHY_INTERFACE_MODE_MII ||
+		phy_mode == PHY_INTERFACE_MODE_TBI ||
+		phy_mode == PHY_INTERFACE_MODE_RTBI;
+}
+
+static inline u32 rgmii_mode_mask(int mode, int input)
+{
+	switch (mode) {
+	case PHY_INTERFACE_MODE_RGMII:
+	case PHY_INTERFACE_MODE_RGMII_ID:
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+	case PHY_INTERFACE_MODE_RGMII_TXID:
+		return RGMII_FER_RGMII(input);
+	case PHY_INTERFACE_MODE_TBI:
+		return RGMII_FER_TBI(input);
+	case PHY_INTERFACE_MODE_GMII:
+		return RGMII_FER_GMII(input);
+	case PHY_INTERFACE_MODE_MII:
+		return RGMII_FER_MII(input);
+	case PHY_INTERFACE_MODE_RTBI:
+		return RGMII_FER_RTBI(input);
+	default:
+		BUG();
+	}
+}
+
+int rgmii_attach(struct platform_device *ofdev, int input, int mode)
+{
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
+	struct rgmii_regs __iomem *p = dev->base;
+
+	RGMII_DBG(dev, "attach(%d)" NL, input);
+
+	/* Check if we need to attach to a RGMII */
+	if (input < 0 || !rgmii_valid_mode(mode)) {
+		printk(KERN_ERR "%pOF: unsupported settings !\n",
+		       ofdev->dev.of_node);
+		return -ENODEV;
+	}
+
+	mutex_lock(&dev->lock);
+
+	/* Enable this input */
+	out_be32(&p->fer, in_be32(&p->fer) | rgmii_mode_mask(mode, input));
+
+	printk(KERN_NOTICE "%pOF: input %d in %s mode\n",
+	       ofdev->dev.of_node, input, phy_modes(mode));
+
+	++dev->users;
+
+	mutex_unlock(&dev->lock);
+
+	return 0;
+}
+
+void rgmii_set_speed(struct platform_device *ofdev, int input, int speed)
+{
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
+	struct rgmii_regs __iomem *p = dev->base;
+	u32 ssr;
+
+	mutex_lock(&dev->lock);
+
+	ssr = in_be32(&p->ssr) & ~RGMII_SSR_MASK(input);
+
+	RGMII_DBG(dev, "speed(%d, %d)" NL, input, speed);
+
+	if (speed == SPEED_1000)
+		ssr |= RGMII_SSR_1000(input);
+	else if (speed == SPEED_100)
+		ssr |= RGMII_SSR_100(input);
+	else if (speed == SPEED_10)
+		ssr |= RGMII_SSR_10(input);
+
+	out_be32(&p->ssr, ssr);
+
+	mutex_unlock(&dev->lock);
+}
+
+void rgmii_get_mdio(struct platform_device *ofdev, int input)
+{
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
+	struct rgmii_regs __iomem *p = dev->base;
+	u32 fer;
+
+	RGMII_DBG2(dev, "get_mdio(%d)" NL, input);
+
+	if (!(dev->flags & EMAC_RGMII_FLAG_HAS_MDIO))
+		return;
+
+	mutex_lock(&dev->lock);
+
+	fer = in_be32(&p->fer);
+	fer |= 0x00080000u >> input;
+	out_be32(&p->fer, fer);
+	(void)in_be32(&p->fer);
+
+	DBG2(dev, " fer = 0x%08x\n", fer);
+}
+
+void rgmii_put_mdio(struct platform_device *ofdev, int input)
+{
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
+	struct rgmii_regs __iomem *p = dev->base;
+	u32 fer;
+
+	RGMII_DBG2(dev, "put_mdio(%d)" NL, input);
+
+	if (!(dev->flags & EMAC_RGMII_FLAG_HAS_MDIO))
+		return;
+
+	fer = in_be32(&p->fer);
+	fer &= ~(0x00080000u >> input);
+	out_be32(&p->fer, fer);
+	(void)in_be32(&p->fer);
+
+	DBG2(dev, " fer = 0x%08x\n", fer);
+
+	mutex_unlock(&dev->lock);
+}
+
+void rgmii_detach(struct platform_device *ofdev, int input)
+{
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
+	struct rgmii_regs __iomem *p;
+
+	BUG_ON(!dev || dev->users == 0);
+	p = dev->base;
+
+	mutex_lock(&dev->lock);
+
+	RGMII_DBG(dev, "detach(%d)" NL, input);
+
+	/* Disable this input */
+	out_be32(&p->fer, in_be32(&p->fer) & ~RGMII_FER_MASK(input));
+
+	--dev->users;
+
+	mutex_unlock(&dev->lock);
+}
+
+int rgmii_get_regs_len(struct platform_device *ofdev)
+{
+	return sizeof(struct emac_ethtool_regs_subhdr) +
+		sizeof(struct rgmii_regs);
+}
+
+void *rgmii_dump_regs(struct platform_device *ofdev, void *buf)
+{
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
+	struct emac_ethtool_regs_subhdr *hdr = buf;
+	struct rgmii_regs *regs = (struct rgmii_regs *)(hdr + 1);
+
+	hdr->version = 0;
+	hdr->index = 0; /* for now, are there chips with more than one
+			 * rgmii ? if yes, then we'll add a cell_index
+			 * like we do for emac
+			 */
+	memcpy_fromio(regs, dev->base, sizeof(struct rgmii_regs));
+	return regs + 1;
+}
+
+
+static int rgmii_probe(struct platform_device *ofdev)
+{
+	struct device_node *np = ofdev->dev.of_node;
+	struct rgmii_instance *dev;
+	struct resource regs;
+	int rc;
+
+	rc = -ENOMEM;
+	dev = kzalloc(sizeof(struct rgmii_instance), GFP_KERNEL);
+	if (dev == NULL)
+		goto err_gone;
+
+	mutex_init(&dev->lock);
+	dev->ofdev = ofdev;
+
+	rc = -ENXIO;
+	if (of_address_to_resource(np, 0, &regs)) {
+		printk(KERN_ERR "%pOF: Can't get registers address\n", np);
+		goto err_free;
+	}
+
+	rc = -ENOMEM;
+	dev->base = (struct rgmii_regs __iomem *)ioremap(regs.start,
+						 sizeof(struct rgmii_regs));
+	if (dev->base == NULL) {
+		printk(KERN_ERR "%pOF: Can't map device registers!\n", np);
+		goto err_free;
+	}
+
+	/* Check for RGMII flags */
+	if (of_get_property(ofdev->dev.of_node, "has-mdio", NULL))
+		dev->flags |= EMAC_RGMII_FLAG_HAS_MDIO;
+
+	/* CAB lacks the right properties, fix this up */
+	if (of_device_is_compatible(ofdev->dev.of_node, "ibm,rgmii-axon"))
+		dev->flags |= EMAC_RGMII_FLAG_HAS_MDIO;
+
+	DBG2(dev, " Boot FER = 0x%08x, SSR = 0x%08x\n",
+	     in_be32(&dev->base->fer), in_be32(&dev->base->ssr));
+
+	/* Disable all inputs by default */
+	out_be32(&dev->base->fer, 0);
+
+	printk(KERN_INFO
+	       "RGMII %pOF initialized with%s MDIO support\n",
+	       ofdev->dev.of_node,
+	       (dev->flags & EMAC_RGMII_FLAG_HAS_MDIO) ? "" : "out");
+
+	wmb();
+	platform_set_drvdata(ofdev, dev);
+
+	return 0;
+
+ err_free:
+	kfree(dev);
+ err_gone:
+	return rc;
+}
+
+static int rgmii_remove(struct platform_device *ofdev)
+{
+	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
+
+	WARN_ON(dev->users != 0);
+
+	iounmap(dev->base);
+	kfree(dev);
+
+	return 0;
+}
+
+static const struct of_device_id rgmii_match[] =
+{
+	{
+		.compatible	= "ibm,rgmii",
+	},
+	{
+		.type		= "emac-rgmii",
+	},
+	{},
+};
+
+static struct platform_driver rgmii_driver = {
+	.driver = {
+		.name = "emac-rgmii",
+		.of_match_table = rgmii_match,
+	},
+	.probe = rgmii_probe,
+	.remove = rgmii_remove,
+};
+
+int __init rgmii_init(void)
+{
+	return platform_driver_register(&rgmii_driver);
+}
+
+void rgmii_exit(void)
+{
+	platform_driver_unregister(&rgmii_driver);
+}