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, 311 insertions, 0 deletions

diff --git a/drivers/media/platform/microchip/microchip-isc-clk.c b/drivers/media/platform/microchip/microchip-isc-clk.c
new file mode 100644
index 000000000..24358d804
--- /dev/null
+++ b/drivers/media/platform/microchip/microchip-isc-clk.c
@@ -0,0 +1,311 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Microchip Image Sensor Controller (ISC) common clock driver setup
+ *
+ * Copyright (C) 2016 Microchip Technology, Inc.
+ *
+ * Author: Songjun Wu
+ * Author: Eugen Hristev <eugen.hristev@microchip.com>
+ *
+ */
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+
+#include "microchip-isc-regs.h"
+#include "microchip-isc.h"
+
+static int isc_wait_clk_stable(struct clk_hw *hw)
+{
+	struct isc_clk *isc_clk = to_isc_clk(hw);
+	struct regmap *regmap = isc_clk->regmap;
+	unsigned long timeout = jiffies + usecs_to_jiffies(1000);
+	unsigned int status;
+
+	while (time_before(jiffies, timeout)) {
+		regmap_read(regmap, ISC_CLKSR, &status);
+		if (!(status & ISC_CLKSR_SIP))
+			return 0;
+
+		usleep_range(10, 250);
+	}
+
+	return -ETIMEDOUT;
+}
+
+static int isc_clk_prepare(struct clk_hw *hw)
+{
+	struct isc_clk *isc_clk = to_isc_clk(hw);
+	int ret;
+
+	ret = pm_runtime_resume_and_get(isc_clk->dev);
+	if (ret < 0)
+		return ret;
+
+	return isc_wait_clk_stable(hw);
+}
+
+static void isc_clk_unprepare(struct clk_hw *hw)
+{
+	struct isc_clk *isc_clk = to_isc_clk(hw);
+
+	isc_wait_clk_stable(hw);
+
+	pm_runtime_put_sync(isc_clk->dev);
+}
+
+static int isc_clk_enable(struct clk_hw *hw)
+{
+	struct isc_clk *isc_clk = to_isc_clk(hw);
+	u32 id = isc_clk->id;
+	struct regmap *regmap = isc_clk->regmap;
+	unsigned long flags;
+	unsigned int status;
+
+	dev_dbg(isc_clk->dev, "ISC CLK: %s, id = %d, div = %d, parent id = %d\n",
+		__func__, id, isc_clk->div, isc_clk->parent_id);
+
+	spin_lock_irqsave(&isc_clk->lock, flags);
+	regmap_update_bits(regmap, ISC_CLKCFG,
+			   ISC_CLKCFG_DIV_MASK(id) | ISC_CLKCFG_SEL_MASK(id),
+			   (isc_clk->div << ISC_CLKCFG_DIV_SHIFT(id)) |
+			   (isc_clk->parent_id << ISC_CLKCFG_SEL_SHIFT(id)));
+
+	regmap_write(regmap, ISC_CLKEN, ISC_CLK(id));
+	spin_unlock_irqrestore(&isc_clk->lock, flags);
+
+	regmap_read(regmap, ISC_CLKSR, &status);
+	if (status & ISC_CLK(id))
+		return 0;
+	else
+		return -EINVAL;
+}
+
+static void isc_clk_disable(struct clk_hw *hw)
+{
+	struct isc_clk *isc_clk = to_isc_clk(hw);
+	u32 id = isc_clk->id;
+	unsigned long flags;
+
+	spin_lock_irqsave(&isc_clk->lock, flags);
+	regmap_write(isc_clk->regmap, ISC_CLKDIS, ISC_CLK(id));
+	spin_unlock_irqrestore(&isc_clk->lock, flags);
+}
+
+static int isc_clk_is_enabled(struct clk_hw *hw)
+{
+	struct isc_clk *isc_clk = to_isc_clk(hw);
+	u32 status;
+	int ret;
+
+	ret = pm_runtime_resume_and_get(isc_clk->dev);
+	if (ret < 0)
+		return 0;
+
+	regmap_read(isc_clk->regmap, ISC_CLKSR, &status);
+
+	pm_runtime_put_sync(isc_clk->dev);
+
+	return status & ISC_CLK(isc_clk->id) ? 1 : 0;
+}
+
+static unsigned long
+isc_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+	struct isc_clk *isc_clk = to_isc_clk(hw);
+
+	return DIV_ROUND_CLOSEST(parent_rate, isc_clk->div + 1);
+}
+
+static int isc_clk_determine_rate(struct clk_hw *hw,
+				  struct clk_rate_request *req)
+{
+	struct isc_clk *isc_clk = to_isc_clk(hw);
+	long best_rate = -EINVAL;
+	int best_diff = -1;
+	unsigned int i, div;
+
+	for (i = 0; i < clk_hw_get_num_parents(hw); i++) {
+		struct clk_hw *parent;
+		unsigned long parent_rate;
+
+		parent = clk_hw_get_parent_by_index(hw, i);
+		if (!parent)
+			continue;
+
+		parent_rate = clk_hw_get_rate(parent);
+		if (!parent_rate)
+			continue;
+
+		for (div = 1; div < ISC_CLK_MAX_DIV + 2; div++) {
+			unsigned long rate;
+			int diff;
+
+			rate = DIV_ROUND_CLOSEST(parent_rate, div);
+			diff = abs(req->rate - rate);
+
+			if (best_diff < 0 || best_diff > diff) {
+				best_rate = rate;
+				best_diff = diff;
+				req->best_parent_rate = parent_rate;
+				req->best_parent_hw = parent;
+			}
+
+			if (!best_diff || rate < req->rate)
+				break;
+		}
+
+		if (!best_diff)
+			break;
+	}
+
+	dev_dbg(isc_clk->dev,
+		"ISC CLK: %s, best_rate = %ld, parent clk: %s @ %ld\n",
+		__func__, best_rate,
+		__clk_get_name((req->best_parent_hw)->clk),
+		req->best_parent_rate);
+
+	if (best_rate < 0)
+		return best_rate;
+
+	req->rate = best_rate;
+
+	return 0;
+}
+
+static int isc_clk_set_parent(struct clk_hw *hw, u8 index)
+{
+	struct isc_clk *isc_clk = to_isc_clk(hw);
+
+	if (index >= clk_hw_get_num_parents(hw))
+		return -EINVAL;
+
+	isc_clk->parent_id = index;
+
+	return 0;
+}
+
+static u8 isc_clk_get_parent(struct clk_hw *hw)
+{
+	struct isc_clk *isc_clk = to_isc_clk(hw);
+
+	return isc_clk->parent_id;
+}
+
+static int isc_clk_set_rate(struct clk_hw *hw,
+			    unsigned long rate,
+			    unsigned long parent_rate)
+{
+	struct isc_clk *isc_clk = to_isc_clk(hw);
+	u32 div;
+
+	if (!rate)
+		return -EINVAL;
+
+	div = DIV_ROUND_CLOSEST(parent_rate, rate);
+	if (div > (ISC_CLK_MAX_DIV + 1) || !div)
+		return -EINVAL;
+
+	isc_clk->div = div - 1;
+
+	return 0;
+}
+
+static const struct clk_ops isc_clk_ops = {
+	.prepare	= isc_clk_prepare,
+	.unprepare	= isc_clk_unprepare,
+	.enable		= isc_clk_enable,
+	.disable	= isc_clk_disable,
+	.is_enabled	= isc_clk_is_enabled,
+	.recalc_rate	= isc_clk_recalc_rate,
+	.determine_rate	= isc_clk_determine_rate,
+	.set_parent	= isc_clk_set_parent,
+	.get_parent	= isc_clk_get_parent,
+	.set_rate	= isc_clk_set_rate,
+};
+
+static int isc_clk_register(struct isc_device *isc, unsigned int id)
+{
+	struct regmap *regmap = isc->regmap;
+	struct device_node *np = isc->dev->of_node;
+	struct isc_clk *isc_clk;
+	struct clk_init_data init;
+	const char *clk_name = np->name;
+	const char *parent_names[3];
+	int num_parents;
+
+	if (id == ISC_ISPCK && !isc->ispck_required)
+		return 0;
+
+	num_parents = of_clk_get_parent_count(np);
+	if (num_parents < 1 || num_parents > 3)
+		return -EINVAL;
+
+	if (num_parents > 2 && id == ISC_ISPCK)
+		num_parents = 2;
+
+	of_clk_parent_fill(np, parent_names, num_parents);
+
+	if (id == ISC_MCK)
+		of_property_read_string(np, "clock-output-names", &clk_name);
+	else
+		clk_name = "isc-ispck";
+
+	init.parent_names	= parent_names;
+	init.num_parents	= num_parents;
+	init.name		= clk_name;
+	init.ops		= &isc_clk_ops;
+	init.flags		= CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE;
+
+	isc_clk = &isc->isc_clks[id];
+	isc_clk->hw.init	= &init;
+	isc_clk->regmap		= regmap;
+	isc_clk->id		= id;
+	isc_clk->dev		= isc->dev;
+	spin_lock_init(&isc_clk->lock);
+
+	isc_clk->clk = clk_register(isc->dev, &isc_clk->hw);
+	if (IS_ERR(isc_clk->clk)) {
+		dev_err(isc->dev, "%s: clock register fail\n", clk_name);
+		return PTR_ERR(isc_clk->clk);
+	} else if (id == ISC_MCK) {
+		of_clk_add_provider(np, of_clk_src_simple_get, isc_clk->clk);
+	}
+
+	return 0;
+}
+
+int microchip_isc_clk_init(struct isc_device *isc)
+{
+	unsigned int i;
+	int ret;
+
+	for (i = 0; i < ARRAY_SIZE(isc->isc_clks); i++)
+		isc->isc_clks[i].clk = ERR_PTR(-EINVAL);
+
+	for (i = 0; i < ARRAY_SIZE(isc->isc_clks); i++) {
+		ret = isc_clk_register(isc, i);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(microchip_isc_clk_init);
+
+void microchip_isc_clk_cleanup(struct isc_device *isc)
+{
+	unsigned int i;
+
+	of_clk_del_provider(isc->dev->of_node);
+
+	for (i = 0; i < ARRAY_SIZE(isc->isc_clks); i++) {
+		struct isc_clk *isc_clk = &isc->isc_clks[i];
+
+		if (!IS_ERR(isc_clk->clk))
+			clk_unregister(isc_clk->clk);
+	}
+}
+EXPORT_SYMBOL_GPL(microchip_isc_clk_cleanup);