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, 226 insertions, 0 deletions

diff --git a/drivers/net/ethernet/freescale/fs_enet/mii-bitbang.c b/drivers/net/ethernet/freescale/fs_enet/mii-bitbang.c
new file mode 100644
index 000000000..21de56345
--- /dev/null
+++ b/drivers/net/ethernet/freescale/fs_enet/mii-bitbang.c
@@ -0,0 +1,226 @@
+/*
+ * Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
+ *
+ * Copyright (c) 2003 Intracom S.A.
+ *  by Pantelis Antoniou <panto@intracom.gr>
+ *
+ * 2005 (c) MontaVista Software, Inc.
+ * Vitaly Bordug <vbordug@ru.mvista.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/mii.h>
+#include <linux/platform_device.h>
+#include <linux/mdio-bitbang.h>
+#include <linux/of_address.h>
+#include <linux/of_mdio.h>
+#include <linux/of_platform.h>
+
+#include "fs_enet.h"
+
+struct bb_info {
+	struct mdiobb_ctrl ctrl;
+	__be32 __iomem *dir;
+	__be32 __iomem *dat;
+	u32 mdio_msk;
+	u32 mdc_msk;
+};
+
+/* FIXME: If any other users of GPIO crop up, then these will have to
+ * have some sort of global synchronization to avoid races with other
+ * pins on the same port.  The ideal solution would probably be to
+ * bind the ports to a GPIO driver, and have this be a client of it.
+ */
+static inline void bb_set(u32 __iomem *p, u32 m)
+{
+	out_be32(p, in_be32(p) | m);
+}
+
+static inline void bb_clr(u32 __iomem *p, u32 m)
+{
+	out_be32(p, in_be32(p) & ~m);
+}
+
+static inline int bb_read(u32 __iomem *p, u32 m)
+{
+	return (in_be32(p) & m) != 0;
+}
+
+static inline void mdio_dir(struct mdiobb_ctrl *ctrl, int dir)
+{
+	struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+
+	if (dir)
+		bb_set(bitbang->dir, bitbang->mdio_msk);
+	else
+		bb_clr(bitbang->dir, bitbang->mdio_msk);
+
+	/* Read back to flush the write. */
+	in_be32(bitbang->dir);
+}
+
+static inline int mdio_read(struct mdiobb_ctrl *ctrl)
+{
+	struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+	return bb_read(bitbang->dat, bitbang->mdio_msk);
+}
+
+static inline void mdio(struct mdiobb_ctrl *ctrl, int what)
+{
+	struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+
+	if (what)
+		bb_set(bitbang->dat, bitbang->mdio_msk);
+	else
+		bb_clr(bitbang->dat, bitbang->mdio_msk);
+
+	/* Read back to flush the write. */
+	in_be32(bitbang->dat);
+}
+
+static inline void mdc(struct mdiobb_ctrl *ctrl, int what)
+{
+	struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+
+	if (what)
+		bb_set(bitbang->dat, bitbang->mdc_msk);
+	else
+		bb_clr(bitbang->dat, bitbang->mdc_msk);
+
+	/* Read back to flush the write. */
+	in_be32(bitbang->dat);
+}
+
+static const struct mdiobb_ops bb_ops = {
+	.owner = THIS_MODULE,
+	.set_mdc = mdc,
+	.set_mdio_dir = mdio_dir,
+	.set_mdio_data = mdio,
+	.get_mdio_data = mdio_read,
+};
+
+static int fs_mii_bitbang_init(struct mii_bus *bus, struct device_node *np)
+{
+	struct resource res;
+	const u32 *data;
+	int mdio_pin, mdc_pin, len;
+	struct bb_info *bitbang = bus->priv;
+
+	int ret = of_address_to_resource(np, 0, &res);
+	if (ret)
+		return ret;
+
+	if (resource_size(&res) <= 13)
+		return -ENODEV;
+
+	/* This should really encode the pin number as well, but all
+	 * we get is an int, and the odds of multiple bitbang mdio buses
+	 * is low enough that it's not worth going too crazy.
+	 */
+	snprintf(bus->id, MII_BUS_ID_SIZE, "%x", res.start);
+
+	data = of_get_property(np, "fsl,mdio-pin", &len);
+	if (!data || len != 4)
+		return -ENODEV;
+	mdio_pin = *data;
+
+	data = of_get_property(np, "fsl,mdc-pin", &len);
+	if (!data || len != 4)
+		return -ENODEV;
+	mdc_pin = *data;
+
+	bitbang->dir = ioremap(res.start, resource_size(&res));
+	if (!bitbang->dir)
+		return -ENOMEM;
+
+	bitbang->dat = bitbang->dir + 4;
+	bitbang->mdio_msk = 1 << (31 - mdio_pin);
+	bitbang->mdc_msk = 1 << (31 - mdc_pin);
+
+	return 0;
+}
+
+static int fs_enet_mdio_probe(struct platform_device *ofdev)
+{
+	struct mii_bus *new_bus;
+	struct bb_info *bitbang;
+	int ret = -ENOMEM;
+
+	bitbang = kzalloc(sizeof(struct bb_info), GFP_KERNEL);
+	if (!bitbang)
+		goto out;
+
+	bitbang->ctrl.ops = &bb_ops;
+
+	new_bus = alloc_mdio_bitbang(&bitbang->ctrl);
+	if (!new_bus)
+		goto out_free_priv;
+
+	new_bus->name = "CPM2 Bitbanged MII",
+
+	ret = fs_mii_bitbang_init(new_bus, ofdev->dev.of_node);
+	if (ret)
+		goto out_free_bus;
+
+	new_bus->phy_mask = ~0;
+
+	new_bus->parent = &ofdev->dev;
+	platform_set_drvdata(ofdev, new_bus);
+
+	ret = of_mdiobus_register(new_bus, ofdev->dev.of_node);
+	if (ret)
+		goto out_unmap_regs;
+
+	return 0;
+
+out_unmap_regs:
+	iounmap(bitbang->dir);
+out_free_bus:
+	free_mdio_bitbang(new_bus);
+out_free_priv:
+	kfree(bitbang);
+out:
+	return ret;
+}
+
+static int fs_enet_mdio_remove(struct platform_device *ofdev)
+{
+	struct mii_bus *bus = platform_get_drvdata(ofdev);
+	struct bb_info *bitbang = bus->priv;
+
+	mdiobus_unregister(bus);
+	free_mdio_bitbang(bus);
+	iounmap(bitbang->dir);
+	kfree(bitbang);
+
+	return 0;
+}
+
+static const struct of_device_id fs_enet_mdio_bb_match[] = {
+	{
+		.compatible = "fsl,cpm2-mdio-bitbang",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, fs_enet_mdio_bb_match);
+
+static struct platform_driver fs_enet_bb_mdio_driver = {
+	.driver = {
+		.name = "fsl-bb-mdio",
+		.of_match_table = fs_enet_mdio_bb_match,
+	},
+	.probe = fs_enet_mdio_probe,
+	.remove = fs_enet_mdio_remove,
+};
+
+module_platform_driver(fs_enet_bb_mdio_driver);
+MODULE_LICENSE("GPL");