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, 383 insertions, 0 deletions

diff --git a/tools/perf/util/bpf_skel/kwork_trace.bpf.c b/tools/perf/util/bpf_skel/kwork_trace.bpf.c
new file mode 100644
index 000000000..063c124e0
--- /dev/null
+++ b/tools/perf/util/bpf_skel/kwork_trace.bpf.c
@@ -0,0 +1,383 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+// Copyright (c) 2022, Huawei
+
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+#define KWORK_COUNT 100
+#define MAX_KWORKNAME 128
+
+/*
+ * This should be in sync with "util/kwork.h"
+ */
+enum kwork_class_type {
+	KWORK_CLASS_IRQ,
+	KWORK_CLASS_SOFTIRQ,
+	KWORK_CLASS_WORKQUEUE,
+	KWORK_CLASS_MAX,
+};
+
+struct work_key {
+	__u32 type;
+	__u32 cpu;
+	__u64 id;
+};
+
+struct report_data {
+	__u64 nr;
+	__u64 total_time;
+	__u64 max_time;
+	__u64 max_time_start;
+	__u64 max_time_end;
+};
+
+struct {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(key_size, sizeof(struct work_key));
+	__uint(value_size, MAX_KWORKNAME);
+	__uint(max_entries, KWORK_COUNT);
+} perf_kwork_names SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(key_size, sizeof(struct work_key));
+	__uint(value_size, sizeof(__u64));
+	__uint(max_entries, KWORK_COUNT);
+} perf_kwork_time SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(key_size, sizeof(struct work_key));
+	__uint(value_size, sizeof(struct report_data));
+	__uint(max_entries, KWORK_COUNT);
+} perf_kwork_report SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(key_size, sizeof(__u32));
+	__uint(value_size, sizeof(__u8));
+	__uint(max_entries, 1);
+} perf_kwork_cpu_filter SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__uint(key_size, sizeof(__u32));
+	__uint(value_size, MAX_KWORKNAME);
+	__uint(max_entries, 1);
+} perf_kwork_name_filter SEC(".maps");
+
+int enabled = 0;
+int has_cpu_filter = 0;
+int has_name_filter = 0;
+
+static __always_inline int local_strncmp(const char *s1,
+					 unsigned int sz, const char *s2)
+{
+	int ret = 0;
+	unsigned int i;
+
+	for (i = 0; i < sz; i++) {
+		ret = (unsigned char)s1[i] - (unsigned char)s2[i];
+		if (ret || !s1[i] || !s2[i])
+			break;
+	}
+
+	return ret;
+}
+
+static __always_inline int trace_event_match(struct work_key *key, char *name)
+{
+	__u8 *cpu_val;
+	char *name_val;
+	__u32 zero = 0;
+	__u32 cpu = bpf_get_smp_processor_id();
+
+	if (!enabled)
+		return 0;
+
+	if (has_cpu_filter) {
+		cpu_val = bpf_map_lookup_elem(&perf_kwork_cpu_filter, &cpu);
+		if (!cpu_val)
+			return 0;
+	}
+
+	if (has_name_filter && (name != NULL)) {
+		name_val = bpf_map_lookup_elem(&perf_kwork_name_filter, &zero);
+		if (name_val &&
+		    (local_strncmp(name_val, MAX_KWORKNAME, name) != 0)) {
+			return 0;
+		}
+	}
+
+	return 1;
+}
+
+static __always_inline void do_update_time(void *map, struct work_key *key,
+					   __u64 time_start, __u64 time_end)
+{
+	struct report_data zero, *data;
+	__s64 delta = time_end - time_start;
+
+	if (delta < 0)
+		return;
+
+	data = bpf_map_lookup_elem(map, key);
+	if (!data) {
+		__builtin_memset(&zero, 0, sizeof(zero));
+		bpf_map_update_elem(map, key, &zero, BPF_NOEXIST);
+		data = bpf_map_lookup_elem(map, key);
+		if (!data)
+			return;
+	}
+
+	if ((delta > data->max_time) ||
+	    (data->max_time == 0)) {
+		data->max_time       = delta;
+		data->max_time_start = time_start;
+		data->max_time_end   = time_end;
+	}
+
+	data->total_time += delta;
+	data->nr++;
+}
+
+static __always_inline void do_update_timestart(void *map, struct work_key *key)
+{
+	__u64 ts = bpf_ktime_get_ns();
+
+	bpf_map_update_elem(map, key, &ts, BPF_ANY);
+}
+
+static __always_inline void do_update_timeend(void *report_map, void *time_map,
+					      struct work_key *key)
+{
+	__u64 *time = bpf_map_lookup_elem(time_map, key);
+
+	if (time) {
+		bpf_map_delete_elem(time_map, key);
+		do_update_time(report_map, key, *time, bpf_ktime_get_ns());
+	}
+}
+
+static __always_inline void do_update_name(void *map,
+					   struct work_key *key, char *name)
+{
+	if (!bpf_map_lookup_elem(map, key))
+		bpf_map_update_elem(map, key, name, BPF_ANY);
+}
+
+static __always_inline int update_timestart(void *map, struct work_key *key)
+{
+	if (!trace_event_match(key, NULL))
+		return 0;
+
+	do_update_timestart(map, key);
+	return 0;
+}
+
+static __always_inline int update_timestart_and_name(void *time_map,
+						     void *names_map,
+						     struct work_key *key,
+						     char *name)
+{
+	if (!trace_event_match(key, name))
+		return 0;
+
+	do_update_timestart(time_map, key);
+	do_update_name(names_map, key, name);
+
+	return 0;
+}
+
+static __always_inline int update_timeend(void *report_map,
+					  void *time_map, struct work_key *key)
+{
+	if (!trace_event_match(key, NULL))
+		return 0;
+
+	do_update_timeend(report_map, time_map, key);
+
+	return 0;
+}
+
+static __always_inline int update_timeend_and_name(void *report_map,
+						   void *time_map,
+						   void *names_map,
+						   struct work_key *key,
+						   char *name)
+{
+	if (!trace_event_match(key, name))
+		return 0;
+
+	do_update_timeend(report_map, time_map, key);
+	do_update_name(names_map, key, name);
+
+	return 0;
+}
+
+SEC("tracepoint/irq/irq_handler_entry")
+int report_irq_handler_entry(struct trace_event_raw_irq_handler_entry *ctx)
+{
+	char name[MAX_KWORKNAME];
+	struct work_key key = {
+		.type = KWORK_CLASS_IRQ,
+		.cpu  = bpf_get_smp_processor_id(),
+		.id   = (__u64)ctx->irq,
+	};
+	void *name_addr = (void *)ctx + (ctx->__data_loc_name & 0xffff);
+
+	bpf_probe_read_kernel_str(name, sizeof(name), name_addr);
+
+	return update_timestart_and_name(&perf_kwork_time,
+					 &perf_kwork_names, &key, name);
+}
+
+SEC("tracepoint/irq/irq_handler_exit")
+int report_irq_handler_exit(struct trace_event_raw_irq_handler_exit *ctx)
+{
+	struct work_key key = {
+		.type = KWORK_CLASS_IRQ,
+		.cpu  = bpf_get_smp_processor_id(),
+		.id   = (__u64)ctx->irq,
+	};
+
+	return update_timeend(&perf_kwork_report, &perf_kwork_time, &key);
+}
+
+static char softirq_name_list[NR_SOFTIRQS][MAX_KWORKNAME] = {
+	{ "HI"       },
+	{ "TIMER"    },
+	{ "NET_TX"   },
+	{ "NET_RX"   },
+	{ "BLOCK"    },
+	{ "IRQ_POLL" },
+	{ "TASKLET"  },
+	{ "SCHED"    },
+	{ "HRTIMER"  },
+	{ "RCU"      },
+};
+
+SEC("tracepoint/irq/softirq_entry")
+int report_softirq_entry(struct trace_event_raw_softirq *ctx)
+{
+	unsigned int vec = ctx->vec;
+	struct work_key key = {
+		.type = KWORK_CLASS_SOFTIRQ,
+		.cpu  = bpf_get_smp_processor_id(),
+		.id   = (__u64)vec,
+	};
+
+	if (vec < NR_SOFTIRQS) {
+		return update_timestart_and_name(&perf_kwork_time,
+						 &perf_kwork_names, &key,
+						 softirq_name_list[vec]);
+	}
+
+	return 0;
+}
+
+SEC("tracepoint/irq/softirq_exit")
+int report_softirq_exit(struct trace_event_raw_softirq *ctx)
+{
+	struct work_key key = {
+		.type = KWORK_CLASS_SOFTIRQ,
+		.cpu  = bpf_get_smp_processor_id(),
+		.id   = (__u64)ctx->vec,
+	};
+
+	return update_timeend(&perf_kwork_report, &perf_kwork_time, &key);
+}
+
+SEC("tracepoint/irq/softirq_raise")
+int latency_softirq_raise(struct trace_event_raw_softirq *ctx)
+{
+	unsigned int vec = ctx->vec;
+	struct work_key key = {
+		.type = KWORK_CLASS_SOFTIRQ,
+		.cpu  = bpf_get_smp_processor_id(),
+		.id   = (__u64)vec,
+	};
+
+	if (vec < NR_SOFTIRQS) {
+		return update_timestart_and_name(&perf_kwork_time,
+						 &perf_kwork_names, &key,
+						 softirq_name_list[vec]);
+	}
+
+	return 0;
+}
+
+SEC("tracepoint/irq/softirq_entry")
+int latency_softirq_entry(struct trace_event_raw_softirq *ctx)
+{
+	struct work_key key = {
+		.type = KWORK_CLASS_SOFTIRQ,
+		.cpu  = bpf_get_smp_processor_id(),
+		.id   = (__u64)ctx->vec,
+	};
+
+	return update_timeend(&perf_kwork_report, &perf_kwork_time, &key);
+}
+
+SEC("tracepoint/workqueue/workqueue_execute_start")
+int report_workqueue_execute_start(struct trace_event_raw_workqueue_execute_start *ctx)
+{
+	struct work_key key = {
+		.type = KWORK_CLASS_WORKQUEUE,
+		.cpu  = bpf_get_smp_processor_id(),
+		.id   = (__u64)ctx->work,
+	};
+
+	return update_timestart(&perf_kwork_time, &key);
+}
+
+SEC("tracepoint/workqueue/workqueue_execute_end")
+int report_workqueue_execute_end(struct trace_event_raw_workqueue_execute_end *ctx)
+{
+	char name[MAX_KWORKNAME];
+	struct work_key key = {
+		.type = KWORK_CLASS_WORKQUEUE,
+		.cpu  = bpf_get_smp_processor_id(),
+		.id   = (__u64)ctx->work,
+	};
+	unsigned long long func_addr = (unsigned long long)ctx->function;
+
+	__builtin_memset(name, 0, sizeof(name));
+	bpf_snprintf(name, sizeof(name), "%ps", &func_addr, sizeof(func_addr));
+
+	return update_timeend_and_name(&perf_kwork_report, &perf_kwork_time,
+				       &perf_kwork_names, &key, name);
+}
+
+SEC("tracepoint/workqueue/workqueue_activate_work")
+int latency_workqueue_activate_work(struct trace_event_raw_workqueue_activate_work *ctx)
+{
+	struct work_key key = {
+		.type = KWORK_CLASS_WORKQUEUE,
+		.cpu  = bpf_get_smp_processor_id(),
+		.id   = (__u64)ctx->work,
+	};
+
+	return update_timestart(&perf_kwork_time, &key);
+}
+
+SEC("tracepoint/workqueue/workqueue_execute_start")
+int latency_workqueue_execute_start(struct trace_event_raw_workqueue_execute_start *ctx)
+{
+	char name[MAX_KWORKNAME];
+	struct work_key key = {
+		.type = KWORK_CLASS_WORKQUEUE,
+		.cpu  = bpf_get_smp_processor_id(),
+		.id   = (__u64)ctx->work,
+	};
+	unsigned long long func_addr = (unsigned long long)ctx->function;
+
+	__builtin_memset(name, 0, sizeof(name));
+	bpf_snprintf(name, sizeof(name), "%ps", &func_addr, sizeof(func_addr));
+
+	return update_timeend_and_name(&perf_kwork_report, &perf_kwork_time,
+				       &perf_kwork_names, &key, name);
+}
+
+char LICENSE[] SEC("license") = "Dual BSD/GPL";