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, 230 insertions, 0 deletions

diff --git a/drivers/soc/qcom/smem_state.c b/drivers/soc/qcom/smem_state.c
new file mode 100644
index 000000000..e848cc9a3
--- /dev/null
+++ b/drivers/soc/qcom/smem_state.c
@@ -0,0 +1,230 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2015, Sony Mobile Communications Inc.
+ * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
+ */
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+#include <linux/soc/qcom/smem_state.h>
+
+static LIST_HEAD(smem_states);
+static DEFINE_MUTEX(list_lock);
+
+/**
+ * struct qcom_smem_state - state context
+ * @refcount:	refcount for the state
+ * @orphan:	boolean indicator that this state has been unregistered
+ * @list:	entry in smem_states list
+ * @of_node:	of_node to use for matching the state in DT
+ * @priv:	implementation private data
+ * @ops:	ops for the state
+ */
+struct qcom_smem_state {
+	struct kref refcount;
+	bool orphan;
+
+	struct list_head list;
+	struct device_node *of_node;
+
+	void *priv;
+
+	struct qcom_smem_state_ops ops;
+};
+
+/**
+ * qcom_smem_state_update_bits() - update the masked bits in state with value
+ * @state:	state handle acquired by calling qcom_smem_state_get()
+ * @mask:	bit mask for the change
+ * @value:	new value for the masked bits
+ *
+ * Returns 0 on success, otherwise negative errno.
+ */
+int qcom_smem_state_update_bits(struct qcom_smem_state *state,
+				u32 mask,
+				u32 value)
+{
+	if (state->orphan)
+		return -ENXIO;
+
+	if (!state->ops.update_bits)
+		return -ENOTSUPP;
+
+	return state->ops.update_bits(state->priv, mask, value);
+}
+EXPORT_SYMBOL_GPL(qcom_smem_state_update_bits);
+
+static struct qcom_smem_state *of_node_to_state(struct device_node *np)
+{
+	struct qcom_smem_state *state;
+
+	mutex_lock(&list_lock);
+
+	list_for_each_entry(state, &smem_states, list) {
+		if (state->of_node == np) {
+			kref_get(&state->refcount);
+			goto unlock;
+		}
+	}
+	state = ERR_PTR(-EPROBE_DEFER);
+
+unlock:
+	mutex_unlock(&list_lock);
+
+	return state;
+}
+
+/**
+ * qcom_smem_state_get() - acquire handle to a state
+ * @dev:	client device pointer
+ * @con_id:	name of the state to lookup
+ * @bit:	flags from the state reference, indicating which bit's affected
+ *
+ * Returns handle to the state, or ERR_PTR(). qcom_smem_state_put() must be
+ * called to release the returned state handle.
+ */
+struct qcom_smem_state *qcom_smem_state_get(struct device *dev,
+					    const char *con_id,
+					    unsigned *bit)
+{
+	struct qcom_smem_state *state;
+	struct of_phandle_args args;
+	int index = 0;
+	int ret;
+
+	if (con_id) {
+		index = of_property_match_string(dev->of_node,
+						 "qcom,smem-state-names",
+						 con_id);
+		if (index < 0) {
+			dev_err(dev, "missing qcom,smem-state-names\n");
+			return ERR_PTR(index);
+		}
+	}
+
+	ret = of_parse_phandle_with_args(dev->of_node,
+					 "qcom,smem-states",
+					 "#qcom,smem-state-cells",
+					 index,
+					 &args);
+	if (ret) {
+		dev_err(dev, "failed to parse qcom,smem-states property\n");
+		return ERR_PTR(ret);
+	}
+
+	if (args.args_count != 1) {
+		dev_err(dev, "invalid #qcom,smem-state-cells\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	state = of_node_to_state(args.np);
+	if (IS_ERR(state))
+		goto put;
+
+	*bit = args.args[0];
+
+put:
+	of_node_put(args.np);
+	return state;
+}
+EXPORT_SYMBOL_GPL(qcom_smem_state_get);
+
+static void qcom_smem_state_release(struct kref *ref)
+{
+	struct qcom_smem_state *state = container_of(ref, struct qcom_smem_state, refcount);
+
+	list_del(&state->list);
+	of_node_put(state->of_node);
+	kfree(state);
+}
+
+/**
+ * qcom_smem_state_put() - release state handle
+ * @state:	state handle to be released
+ */
+void qcom_smem_state_put(struct qcom_smem_state *state)
+{
+	mutex_lock(&list_lock);
+	kref_put(&state->refcount, qcom_smem_state_release);
+	mutex_unlock(&list_lock);
+}
+EXPORT_SYMBOL_GPL(qcom_smem_state_put);
+
+static void devm_qcom_smem_state_release(struct device *dev, void *res)
+{
+	qcom_smem_state_put(*(struct qcom_smem_state **)res);
+}
+
+/**
+ * devm_qcom_smem_state_get() - acquire handle to a devres managed state
+ * @dev:	client device pointer
+ * @con_id:	name of the state to lookup
+ * @bit:	flags from the state reference, indicating which bit's affected
+ *
+ * Returns handle to the state, or ERR_PTR(). qcom_smem_state_put() is called
+ * automatically when @dev is removed.
+ */
+struct qcom_smem_state *devm_qcom_smem_state_get(struct device *dev,
+						 const char *con_id,
+						 unsigned *bit)
+{
+	struct qcom_smem_state **ptr, *state;
+
+	ptr = devres_alloc(devm_qcom_smem_state_release, sizeof(*ptr), GFP_KERNEL);
+	if (!ptr)
+		return ERR_PTR(-ENOMEM);
+
+	state = qcom_smem_state_get(dev, con_id, bit);
+	if (!IS_ERR(state)) {
+		*ptr = state;
+		devres_add(dev, ptr);
+	} else {
+		devres_free(ptr);
+	}
+
+	return state;
+}
+EXPORT_SYMBOL_GPL(devm_qcom_smem_state_get);
+
+/**
+ * qcom_smem_state_register() - register a new state
+ * @of_node:	of_node used for matching client lookups
+ * @ops:	implementation ops
+ * @priv:	implementation specific private data
+ */
+struct qcom_smem_state *qcom_smem_state_register(struct device_node *of_node,
+						 const struct qcom_smem_state_ops *ops,
+						 void *priv)
+{
+	struct qcom_smem_state *state;
+
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return ERR_PTR(-ENOMEM);
+
+	kref_init(&state->refcount);
+
+	state->of_node = of_node_get(of_node);
+	state->ops = *ops;
+	state->priv = priv;
+
+	mutex_lock(&list_lock);
+	list_add(&state->list, &smem_states);
+	mutex_unlock(&list_lock);
+
+	return state;
+}
+EXPORT_SYMBOL_GPL(qcom_smem_state_register);
+
+/**
+ * qcom_smem_state_unregister() - unregister a registered state
+ * @state:	state handle to be unregistered
+ */
+void qcom_smem_state_unregister(struct qcom_smem_state *state)
+{
+	state->orphan = true;
+	qcom_smem_state_put(state);
+}
+EXPORT_SYMBOL_GPL(qcom_smem_state_unregister);