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, 290 insertions, 0 deletions

diff --git a/tools/power/cpupower/lib/powercap.c b/tools/power/cpupower/lib/powercap.c
new file mode 100644
index 000000000..0ce29ee4c
--- /dev/null
+++ b/tools/power/cpupower/lib/powercap.c
@@ -0,0 +1,290 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  (C) 2016 SUSE Software Solutions GmbH
+ *           Thomas Renninger <trenn@suse.de>
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <dirent.h>
+
+#include "powercap.h"
+
+static unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen)
+{
+	int fd;
+	ssize_t numread;
+
+	fd = open(path, O_RDONLY);
+	if (fd == -1)
+		return 0;
+
+	numread = read(fd, buf, buflen - 1);
+	if (numread < 1) {
+		close(fd);
+		return 0;
+	}
+
+	buf[numread] = '\0';
+	close(fd);
+
+	return (unsigned int) numread;
+}
+
+static int sysfs_get_enabled(char *path, int *mode)
+{
+	int fd;
+	char yes_no;
+
+	*mode = 0;
+
+	fd = open(path, O_RDONLY);
+	if (fd == -1)
+		return -1;
+
+	if (read(fd, &yes_no, 1) != 1) {
+		close(fd);
+		return -1;
+	}
+
+	if (yes_no == '1') {
+		*mode = 1;
+		return 0;
+	} else if (yes_no == '0') {
+		return 0;
+	}
+	return -1;
+}
+
+int powercap_get_enabled(int *mode)
+{
+	char path[SYSFS_PATH_MAX] = PATH_TO_POWERCAP "/intel-rapl/enabled";
+
+	return sysfs_get_enabled(path, mode);
+}
+
+/*
+ * Hardcoded, because rapl is the only powercap implementation
+- * this needs to get more generic if more powercap implementations
+ * should show up
+ */
+int powercap_get_driver(char *driver, int buflen)
+{
+	char file[SYSFS_PATH_MAX] = PATH_TO_RAPL;
+
+	struct stat statbuf;
+
+	if (stat(file, &statbuf) != 0 || !S_ISDIR(statbuf.st_mode)) {
+		driver = "";
+		return -1;
+	} else if (buflen > 10) {
+		strcpy(driver, "intel-rapl");
+		return 0;
+	} else
+		return -1;
+}
+
+enum powercap_get64 {
+	GET_ENERGY_UJ,
+	GET_MAX_ENERGY_RANGE_UJ,
+	GET_POWER_UW,
+	GET_MAX_POWER_RANGE_UW,
+	MAX_GET_64_FILES
+};
+
+static const char *powercap_get64_files[MAX_GET_64_FILES] = {
+	[GET_POWER_UW] = "power_uw",
+	[GET_MAX_POWER_RANGE_UW] = "max_power_range_uw",
+	[GET_ENERGY_UJ] = "energy_uj",
+	[GET_MAX_ENERGY_RANGE_UJ] = "max_energy_range_uj",
+};
+
+static int sysfs_powercap_get64_val(struct powercap_zone *zone,
+				      enum powercap_get64 which,
+				      uint64_t *val)
+{
+	char file[SYSFS_PATH_MAX] = PATH_TO_POWERCAP "/";
+	int ret;
+	char buf[MAX_LINE_LEN];
+
+	strcat(file, zone->sys_name);
+	strcat(file, "/");
+	strcat(file, powercap_get64_files[which]);
+
+	ret = sysfs_read_file(file, buf, MAX_LINE_LEN);
+	if (ret < 0)
+		return ret;
+	if (ret == 0)
+		return -1;
+
+	*val = strtoll(buf, NULL, 10);
+	return 0;
+}
+
+int powercap_get_max_energy_range_uj(struct powercap_zone *zone, uint64_t *val)
+{
+	return sysfs_powercap_get64_val(zone, GET_MAX_ENERGY_RANGE_UJ, val);
+}
+
+int powercap_get_energy_uj(struct powercap_zone *zone, uint64_t *val)
+{
+	return sysfs_powercap_get64_val(zone, GET_ENERGY_UJ, val);
+}
+
+int powercap_get_max_power_range_uw(struct powercap_zone *zone, uint64_t *val)
+{
+	return sysfs_powercap_get64_val(zone, GET_MAX_POWER_RANGE_UW, val);
+}
+
+int powercap_get_power_uw(struct powercap_zone *zone, uint64_t *val)
+{
+	return sysfs_powercap_get64_val(zone, GET_POWER_UW, val);
+}
+
+int powercap_zone_get_enabled(struct powercap_zone *zone, int *mode)
+{
+	char path[SYSFS_PATH_MAX] = PATH_TO_POWERCAP;
+
+	if ((strlen(PATH_TO_POWERCAP) + strlen(zone->sys_name)) +
+	    strlen("/enabled") + 1 >= SYSFS_PATH_MAX)
+		return -1;
+
+	strcat(path, "/");
+	strcat(path, zone->sys_name);
+	strcat(path, "/enabled");
+
+	return sysfs_get_enabled(path, mode);
+}
+
+int powercap_zone_set_enabled(struct powercap_zone *zone, int mode)
+{
+	/* To be done if needed */
+	return 0;
+}
+
+
+int powercap_read_zone(struct powercap_zone *zone)
+{
+	struct dirent *dent;
+	DIR *zone_dir;
+	char sysfs_dir[SYSFS_PATH_MAX] = PATH_TO_POWERCAP;
+	struct powercap_zone *child_zone;
+	char file[SYSFS_PATH_MAX] = PATH_TO_POWERCAP;
+	int i, ret = 0;
+	uint64_t val = 0;
+
+	strcat(sysfs_dir, "/");
+	strcat(sysfs_dir, zone->sys_name);
+
+	zone_dir = opendir(sysfs_dir);
+	if (zone_dir == NULL)
+		return -1;
+
+	strcat(file, "/");
+	strcat(file, zone->sys_name);
+	strcat(file, "/name");
+	sysfs_read_file(file, zone->name, MAX_LINE_LEN);
+	if (zone->parent)
+		zone->tree_depth = zone->parent->tree_depth + 1;
+	ret = powercap_get_energy_uj(zone, &val);
+	if (ret == 0)
+		zone->has_energy_uj = 1;
+	ret = powercap_get_power_uw(zone, &val);
+	if (ret == 0)
+		zone->has_power_uw = 1;
+
+	while ((dent = readdir(zone_dir)) != NULL) {
+		struct stat st;
+
+		if (strcmp(dent->d_name, ".") == 0 || strcmp(dent->d_name, "..") == 0)
+			continue;
+
+		if (stat(dent->d_name, &st) != 0 || !S_ISDIR(st.st_mode))
+			if (fstatat(dirfd(zone_dir), dent->d_name, &st, 0) < 0)
+				continue;
+
+		if (strncmp(dent->d_name, "intel-rapl:", 11) != 0)
+			continue;
+
+		child_zone = calloc(1, sizeof(struct powercap_zone));
+		if (child_zone == NULL)
+			return -1;
+		for (i = 0; i < POWERCAP_MAX_CHILD_ZONES; i++) {
+			if (zone->children[i] == NULL) {
+				zone->children[i] = child_zone;
+				break;
+			}
+			if (i == POWERCAP_MAX_CHILD_ZONES - 1) {
+				free(child_zone);
+				fprintf(stderr, "Reached POWERCAP_MAX_CHILD_ZONES %d\n",
+				       POWERCAP_MAX_CHILD_ZONES);
+				return -1;
+			}
+		}
+		strcpy(child_zone->sys_name, zone->sys_name);
+		strcat(child_zone->sys_name, "/");
+		strcat(child_zone->sys_name, dent->d_name);
+		child_zone->parent = zone;
+		if (zone->tree_depth >= POWERCAP_MAX_TREE_DEPTH) {
+			fprintf(stderr, "Maximum zone hierarchy depth[%d] reached\n",
+				POWERCAP_MAX_TREE_DEPTH);
+			ret = -1;
+			break;
+		}
+		powercap_read_zone(child_zone);
+	}
+	closedir(zone_dir);
+	return ret;
+}
+
+struct powercap_zone *powercap_init_zones(void)
+{
+	int enabled;
+	struct powercap_zone *root_zone;
+	int ret;
+	char file[SYSFS_PATH_MAX] = PATH_TO_RAPL "/enabled";
+
+	ret = sysfs_get_enabled(file, &enabled);
+
+	if (ret)
+		return NULL;
+
+	if (!enabled)
+		return NULL;
+
+	root_zone = calloc(1, sizeof(struct powercap_zone));
+	if (!root_zone)
+		return NULL;
+
+	strcpy(root_zone->sys_name, "intel-rapl/intel-rapl:0");
+
+	powercap_read_zone(root_zone);
+
+	return root_zone;
+}
+
+/* Call function *f on the passed zone and all its children */
+
+int powercap_walk_zones(struct powercap_zone *zone,
+			int (*f)(struct powercap_zone *zone))
+{
+	int i, ret;
+
+	if (!zone)
+		return -1;
+
+	ret = f(zone);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < POWERCAP_MAX_CHILD_ZONES; i++) {
+		if (zone->children[i] != NULL)
+			powercap_walk_zones(zone->children[i], f);
+	}
+	return 0;
+}