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, 247 insertions, 0 deletions

diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c
new file mode 100644
index 000000000..c6fdf019d
--- /dev/null
+++ b/drivers/cpufreq/spear-cpufreq.c
@@ -0,0 +1,247 @@
+/*
+ * drivers/cpufreq/spear-cpufreq.c
+ *
+ * CPU Frequency Scaling for SPEAr platform
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Deepak Sikri <deepak.sikri@st.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.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/clk.h>
+#include <linux/cpufreq.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+/* SPEAr CPUFreq driver data structure */
+static struct {
+	struct clk *clk;
+	unsigned int transition_latency;
+	struct cpufreq_frequency_table *freq_tbl;
+	u32 cnt;
+} spear_cpufreq;
+
+static struct clk *spear1340_cpu_get_possible_parent(unsigned long newfreq)
+{
+	struct clk *sys_pclk;
+	int pclk;
+	/*
+	 * In SPEAr1340, cpu clk's parent sys clk can take input from
+	 * following sources
+	 */
+	static const char * const sys_clk_src[] = {
+		"sys_syn_clk",
+		"pll1_clk",
+		"pll2_clk",
+		"pll3_clk",
+	};
+
+	/*
+	 * As sys clk can have multiple source with their own range
+	 * limitation so we choose possible sources accordingly
+	 */
+	if (newfreq <= 300000000)
+		pclk = 0; /* src is sys_syn_clk */
+	else if (newfreq > 300000000 && newfreq <= 500000000)
+		pclk = 3; /* src is pll3_clk */
+	else if (newfreq == 600000000)
+		pclk = 1; /* src is pll1_clk */
+	else
+		return ERR_PTR(-EINVAL);
+
+	/* Get parent to sys clock */
+	sys_pclk = clk_get(NULL, sys_clk_src[pclk]);
+	if (IS_ERR(sys_pclk))
+		pr_err("Failed to get %s clock\n", sys_clk_src[pclk]);
+
+	return sys_pclk;
+}
+
+/*
+ * In SPEAr1340, we cannot use newfreq directly because we need to actually
+ * access a source clock (clk) which might not be ancestor of cpu at present.
+ * Hence in SPEAr1340 we would operate on source clock directly before switching
+ * cpu clock to it.
+ */
+static int spear1340_set_cpu_rate(struct clk *sys_pclk, unsigned long newfreq)
+{
+	struct clk *sys_clk;
+	int ret = 0;
+
+	sys_clk = clk_get_parent(spear_cpufreq.clk);
+	if (IS_ERR(sys_clk)) {
+		pr_err("failed to get cpu's parent (sys) clock\n");
+		return PTR_ERR(sys_clk);
+	}
+
+	/* Set the rate of the source clock before changing the parent */
+	ret = clk_set_rate(sys_pclk, newfreq);
+	if (ret) {
+		pr_err("Failed to set sys clk rate to %lu\n", newfreq);
+		return ret;
+	}
+
+	ret = clk_set_parent(sys_clk, sys_pclk);
+	if (ret) {
+		pr_err("Failed to set sys clk parent\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int spear_cpufreq_target(struct cpufreq_policy *policy,
+		unsigned int index)
+{
+	long newfreq;
+	struct clk *srcclk;
+	int ret, mult = 1;
+
+	newfreq = spear_cpufreq.freq_tbl[index].frequency * 1000;
+
+	if (of_machine_is_compatible("st,spear1340")) {
+		/*
+		 * SPEAr1340 is special in the sense that due to the possibility
+		 * of multiple clock sources for cpu clk's parent we can have
+		 * different clock source for different frequency of cpu clk.
+		 * Hence we need to choose one from amongst these possible clock
+		 * sources.
+		 */
+		srcclk = spear1340_cpu_get_possible_parent(newfreq);
+		if (IS_ERR(srcclk)) {
+			pr_err("Failed to get src clk\n");
+			return PTR_ERR(srcclk);
+		}
+
+		/* SPEAr1340: src clk is always 2 * intended cpu clk */
+		mult = 2;
+	} else {
+		/*
+		 * src clock to be altered is ancestor of cpu clock. Hence we
+		 * can directly work on cpu clk
+		 */
+		srcclk = spear_cpufreq.clk;
+	}
+
+	newfreq = clk_round_rate(srcclk, newfreq * mult);
+	if (newfreq <= 0) {
+		pr_err("clk_round_rate failed for cpu src clock\n");
+		return newfreq;
+	}
+
+	if (mult == 2)
+		ret = spear1340_set_cpu_rate(srcclk, newfreq);
+	else
+		ret = clk_set_rate(spear_cpufreq.clk, newfreq);
+
+	if (ret)
+		pr_err("CPU Freq: cpu clk_set_rate failed: %d\n", ret);
+
+	return ret;
+}
+
+static int spear_cpufreq_init(struct cpufreq_policy *policy)
+{
+	policy->clk = spear_cpufreq.clk;
+	cpufreq_generic_init(policy, spear_cpufreq.freq_tbl,
+			spear_cpufreq.transition_latency);
+	return 0;
+}
+
+static struct cpufreq_driver spear_cpufreq_driver = {
+	.name		= "cpufreq-spear",
+	.flags		= CPUFREQ_NEED_INITIAL_FREQ_CHECK,
+	.verify		= cpufreq_generic_frequency_table_verify,
+	.target_index	= spear_cpufreq_target,
+	.get		= cpufreq_generic_get,
+	.init		= spear_cpufreq_init,
+	.attr		= cpufreq_generic_attr,
+};
+
+static int spear_cpufreq_probe(struct platform_device *pdev)
+{
+	struct device_node *np;
+	const struct property *prop;
+	struct cpufreq_frequency_table *freq_tbl;
+	const __be32 *val;
+	int cnt, i, ret;
+
+	np = of_cpu_device_node_get(0);
+	if (!np) {
+		pr_err("No cpu node found\n");
+		return -ENODEV;
+	}
+
+	if (of_property_read_u32(np, "clock-latency",
+				&spear_cpufreq.transition_latency))
+		spear_cpufreq.transition_latency = CPUFREQ_ETERNAL;
+
+	prop = of_find_property(np, "cpufreq_tbl", NULL);
+	if (!prop || !prop->value) {
+		pr_err("Invalid cpufreq_tbl\n");
+		ret = -ENODEV;
+		goto out_put_node;
+	}
+
+	cnt = prop->length / sizeof(u32);
+	val = prop->value;
+
+	freq_tbl = kcalloc(cnt + 1, sizeof(*freq_tbl), GFP_KERNEL);
+	if (!freq_tbl) {
+		ret = -ENOMEM;
+		goto out_put_node;
+	}
+
+	for (i = 0; i < cnt; i++)
+		freq_tbl[i].frequency = be32_to_cpup(val++);
+
+	freq_tbl[i].frequency = CPUFREQ_TABLE_END;
+
+	spear_cpufreq.freq_tbl = freq_tbl;
+
+	of_node_put(np);
+
+	spear_cpufreq.clk = clk_get(NULL, "cpu_clk");
+	if (IS_ERR(spear_cpufreq.clk)) {
+		pr_err("Unable to get CPU clock\n");
+		ret = PTR_ERR(spear_cpufreq.clk);
+		goto out_put_mem;
+	}
+
+	ret = cpufreq_register_driver(&spear_cpufreq_driver);
+	if (!ret)
+		return 0;
+
+	pr_err("failed register driver: %d\n", ret);
+	clk_put(spear_cpufreq.clk);
+
+out_put_mem:
+	kfree(freq_tbl);
+	return ret;
+
+out_put_node:
+	of_node_put(np);
+	return ret;
+}
+
+static struct platform_driver spear_cpufreq_platdrv = {
+	.driver = {
+		.name	= "spear-cpufreq",
+	},
+	.probe		= spear_cpufreq_probe,
+};
+module_platform_driver(spear_cpufreq_platdrv);
+
+MODULE_AUTHOR("Deepak Sikri <deepak.sikri@st.com>");
+MODULE_DESCRIPTION("SPEAr CPUFreq driver");
+MODULE_LICENSE("GPL");