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, 362 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/pseries/papr_platform_attributes.c b/arch/powerpc/platforms/pseries/papr_platform_attributes.c
new file mode 100644
index 000000000..526c621b0
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/papr_platform_attributes.c
@@ -0,0 +1,362 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Platform energy and frequency attributes driver
+ *
+ * This driver creates a sys file at /sys/firmware/papr/ which encapsulates a
+ * directory structure containing files in keyword - value pairs that specify
+ * energy and frequency configuration of the system.
+ *
+ * The format of exposing the sysfs information is as follows:
+ * /sys/firmware/papr/energy_scale_info/
+ *  |-- <id>/
+ *    |-- desc
+ *    |-- value
+ *    |-- value_desc (if exists)
+ *  |-- <id>/
+ *    |-- desc
+ *    |-- value
+ *    |-- value_desc (if exists)
+ *
+ * Copyright 2022 IBM Corp.
+ */
+
+#include <asm/hvcall.h>
+#include <asm/machdep.h>
+#include <asm/firmware.h>
+
+#include "pseries.h"
+
+/*
+ * Flag attributes to fetch either all or one attribute from the HCALL
+ * flag = BE(0) => fetch all attributes with firstAttributeId = 0
+ * flag = BE(1) => fetch a single attribute with firstAttributeId = id
+ */
+#define ESI_FLAGS_ALL		0
+#define ESI_FLAGS_SINGLE	(1ull << 63)
+
+#define KOBJ_MAX_ATTRS		3
+
+#define ESI_HDR_SIZE		sizeof(struct h_energy_scale_info_hdr)
+#define ESI_ATTR_SIZE		sizeof(struct energy_scale_attribute)
+#define CURR_MAX_ESI_ATTRS	8
+
+struct energy_scale_attribute {
+	__be64 id;
+	__be64 val;
+	u8 desc[64];
+	u8 value_desc[64];
+} __packed;
+
+struct h_energy_scale_info_hdr {
+	__be64 num_attrs;
+	__be64 array_offset;
+	u8 data_header_version;
+} __packed;
+
+struct papr_attr {
+	u64 id;
+	struct kobj_attribute kobj_attr;
+};
+
+struct papr_group {
+	struct attribute_group pg;
+	struct papr_attr pgattrs[KOBJ_MAX_ATTRS];
+};
+
+static struct papr_group *papr_groups;
+/* /sys/firmware/papr */
+static struct kobject *papr_kobj;
+/* /sys/firmware/papr/energy_scale_info */
+static struct kobject *esi_kobj;
+
+/*
+ * Energy modes can change dynamically hence making a new hcall each time the
+ * information needs to be retrieved
+ */
+static int papr_get_attr(u64 id, struct energy_scale_attribute *esi)
+{
+	int esi_buf_size = ESI_HDR_SIZE + (CURR_MAX_ESI_ATTRS * ESI_ATTR_SIZE);
+	int ret, max_esi_attrs = CURR_MAX_ESI_ATTRS;
+	struct energy_scale_attribute *curr_esi;
+	struct h_energy_scale_info_hdr *hdr;
+	char *buf;
+
+	buf = kmalloc(esi_buf_size, GFP_KERNEL);
+	if (buf == NULL)
+		return -ENOMEM;
+
+retry:
+	ret = plpar_hcall_norets(H_GET_ENERGY_SCALE_INFO, ESI_FLAGS_SINGLE,
+				 id, virt_to_phys(buf),
+				 esi_buf_size);
+
+	/*
+	 * If the hcall fails with not enough memory for either the
+	 * header or data, attempt to allocate more
+	 */
+	if (ret == H_PARTIAL || ret == H_P4) {
+		char *temp_buf;
+
+		max_esi_attrs += 4;
+		esi_buf_size = ESI_HDR_SIZE + (CURR_MAX_ESI_ATTRS * max_esi_attrs);
+
+		temp_buf = krealloc(buf, esi_buf_size, GFP_KERNEL);
+		if (temp_buf)
+			buf = temp_buf;
+		else
+			return -ENOMEM;
+
+		goto retry;
+	}
+
+	if (ret != H_SUCCESS) {
+		pr_warn("hcall failed: H_GET_ENERGY_SCALE_INFO");
+		ret = -EIO;
+		goto out_buf;
+	}
+
+	hdr = (struct h_energy_scale_info_hdr *) buf;
+	curr_esi = (struct energy_scale_attribute *)
+		(buf + be64_to_cpu(hdr->array_offset));
+
+	if (esi_buf_size <
+	    be64_to_cpu(hdr->array_offset) + (be64_to_cpu(hdr->num_attrs)
+	    * sizeof(struct energy_scale_attribute))) {
+		ret = -EIO;
+		goto out_buf;
+	}
+
+	*esi = *curr_esi;
+
+out_buf:
+	kfree(buf);
+
+	return ret;
+}
+
+/*
+ * Extract and export the description of the energy scale attributes
+ */
+static ssize_t desc_show(struct kobject *kobj,
+			  struct kobj_attribute *kobj_attr,
+			  char *buf)
+{
+	struct papr_attr *pattr = container_of(kobj_attr, struct papr_attr,
+					       kobj_attr);
+	struct energy_scale_attribute esi;
+	int ret;
+
+	ret = papr_get_attr(pattr->id, &esi);
+	if (ret)
+		return ret;
+
+	return sysfs_emit(buf, "%s\n", esi.desc);
+}
+
+/*
+ * Extract and export the numeric value of the energy scale attributes
+ */
+static ssize_t val_show(struct kobject *kobj,
+			 struct kobj_attribute *kobj_attr,
+			 char *buf)
+{
+	struct papr_attr *pattr = container_of(kobj_attr, struct papr_attr,
+					       kobj_attr);
+	struct energy_scale_attribute esi;
+	int ret;
+
+	ret = papr_get_attr(pattr->id, &esi);
+	if (ret)
+		return ret;
+
+	return sysfs_emit(buf, "%llu\n", be64_to_cpu(esi.val));
+}
+
+/*
+ * Extract and export the value description in string format of the energy
+ * scale attributes
+ */
+static ssize_t val_desc_show(struct kobject *kobj,
+			      struct kobj_attribute *kobj_attr,
+			      char *buf)
+{
+	struct papr_attr *pattr = container_of(kobj_attr, struct papr_attr,
+					       kobj_attr);
+	struct energy_scale_attribute esi;
+	int ret;
+
+	ret = papr_get_attr(pattr->id, &esi);
+	if (ret)
+		return ret;
+
+	return sysfs_emit(buf, "%s\n", esi.value_desc);
+}
+
+static struct papr_ops_info {
+	const char *attr_name;
+	ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *kobj_attr,
+			char *buf);
+} ops_info[KOBJ_MAX_ATTRS] = {
+	{ "desc", desc_show },
+	{ "value", val_show },
+	{ "value_desc", val_desc_show },
+};
+
+static void add_attr(u64 id, int index, struct papr_attr *attr)
+{
+	attr->id = id;
+	sysfs_attr_init(&attr->kobj_attr.attr);
+	attr->kobj_attr.attr.name = ops_info[index].attr_name;
+	attr->kobj_attr.attr.mode = 0444;
+	attr->kobj_attr.show = ops_info[index].show;
+}
+
+static int add_attr_group(u64 id, struct papr_group *pg, bool show_val_desc)
+{
+	int i;
+
+	for (i = 0; i < KOBJ_MAX_ATTRS; i++) {
+		if (!strcmp(ops_info[i].attr_name, "value_desc") &&
+		    !show_val_desc) {
+			continue;
+		}
+		add_attr(id, i, &pg->pgattrs[i]);
+		pg->pg.attrs[i] = &pg->pgattrs[i].kobj_attr.attr;
+	}
+
+	return sysfs_create_group(esi_kobj, &pg->pg);
+}
+
+
+static int __init papr_init(void)
+{
+	int esi_buf_size = ESI_HDR_SIZE + (CURR_MAX_ESI_ATTRS * ESI_ATTR_SIZE);
+	int ret, idx, i, max_esi_attrs = CURR_MAX_ESI_ATTRS;
+	struct h_energy_scale_info_hdr *esi_hdr;
+	struct energy_scale_attribute *esi_attrs;
+	uint64_t num_attrs;
+	char *esi_buf;
+
+	if (!firmware_has_feature(FW_FEATURE_LPAR) ||
+	    !firmware_has_feature(FW_FEATURE_ENERGY_SCALE_INFO)) {
+		return -ENXIO;
+	}
+
+	esi_buf = kmalloc(esi_buf_size, GFP_KERNEL);
+	if (esi_buf == NULL)
+		return -ENOMEM;
+	/*
+	 * hcall(
+	 * uint64 H_GET_ENERGY_SCALE_INFO,  // Get energy scale info
+	 * uint64 flags,            // Per the flag request
+	 * uint64 firstAttributeId, // The attribute id
+	 * uint64 bufferAddress,    // Guest physical address of the output buffer
+	 * uint64 bufferSize);      // The size in bytes of the output buffer
+	 */
+retry:
+
+	ret = plpar_hcall_norets(H_GET_ENERGY_SCALE_INFO, ESI_FLAGS_ALL, 0,
+				 virt_to_phys(esi_buf), esi_buf_size);
+
+	/*
+	 * If the hcall fails with not enough memory for either the
+	 * header or data, attempt to allocate more
+	 */
+	if (ret == H_PARTIAL || ret == H_P4) {
+		char *temp_esi_buf;
+
+		max_esi_attrs += 4;
+		esi_buf_size = ESI_HDR_SIZE + (CURR_MAX_ESI_ATTRS * max_esi_attrs);
+
+		temp_esi_buf = krealloc(esi_buf, esi_buf_size, GFP_KERNEL);
+		if (temp_esi_buf)
+			esi_buf = temp_esi_buf;
+		else
+			return -ENOMEM;
+
+		goto retry;
+	}
+
+	if (ret != H_SUCCESS) {
+		pr_warn("hcall failed: H_GET_ENERGY_SCALE_INFO, ret: %d\n", ret);
+		goto out_free_esi_buf;
+	}
+
+	esi_hdr = (struct h_energy_scale_info_hdr *) esi_buf;
+	num_attrs = be64_to_cpu(esi_hdr->num_attrs);
+	esi_attrs = (struct energy_scale_attribute *)
+		    (esi_buf + be64_to_cpu(esi_hdr->array_offset));
+
+	if (esi_buf_size <
+	    be64_to_cpu(esi_hdr->array_offset) +
+	    (num_attrs * sizeof(struct energy_scale_attribute))) {
+		goto out_free_esi_buf;
+	}
+
+	papr_groups = kcalloc(num_attrs, sizeof(*papr_groups), GFP_KERNEL);
+	if (!papr_groups)
+		goto out_free_esi_buf;
+
+	papr_kobj = kobject_create_and_add("papr", firmware_kobj);
+	if (!papr_kobj) {
+		pr_warn("kobject_create_and_add papr failed\n");
+		goto out_papr_groups;
+	}
+
+	esi_kobj = kobject_create_and_add("energy_scale_info", papr_kobj);
+	if (!esi_kobj) {
+		pr_warn("kobject_create_and_add energy_scale_info failed\n");
+		goto out_kobj;
+	}
+
+	/* Allocate the groups before registering */
+	for (idx = 0; idx < num_attrs; idx++) {
+		papr_groups[idx].pg.attrs = kcalloc(KOBJ_MAX_ATTRS + 1,
+					    sizeof(*papr_groups[idx].pg.attrs),
+					    GFP_KERNEL);
+		if (!papr_groups[idx].pg.attrs)
+			goto out_pgattrs;
+
+		papr_groups[idx].pg.name = kasprintf(GFP_KERNEL, "%lld",
+					     be64_to_cpu(esi_attrs[idx].id));
+		if (papr_groups[idx].pg.name == NULL)
+			goto out_pgattrs;
+	}
+
+	for (idx = 0; idx < num_attrs; idx++) {
+		bool show_val_desc = true;
+
+		/* Do not add the value desc attr if it does not exist */
+		if (strnlen(esi_attrs[idx].value_desc,
+			    sizeof(esi_attrs[idx].value_desc)) == 0)
+			show_val_desc = false;
+
+		if (add_attr_group(be64_to_cpu(esi_attrs[idx].id),
+				   &papr_groups[idx],
+				   show_val_desc)) {
+			pr_warn("Failed to create papr attribute group %s\n",
+				papr_groups[idx].pg.name);
+			idx = num_attrs;
+			goto out_pgattrs;
+		}
+	}
+
+	kfree(esi_buf);
+	return 0;
+out_pgattrs:
+	for (i = 0; i < idx ; i++) {
+		kfree(papr_groups[i].pg.attrs);
+		kfree(papr_groups[i].pg.name);
+	}
+	kobject_put(esi_kobj);
+out_kobj:
+	kobject_put(papr_kobj);
+out_papr_groups:
+	kfree(papr_groups);
+out_free_esi_buf:
+	kfree(esi_buf);
+
+	return -ENOMEM;
+}
+
+machine_device_initcall(pseries, papr_init);