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, 210 insertions, 0 deletions

diff --git a/drivers/s390/net/fsm.c b/drivers/s390/net/fsm.c
new file mode 100644
index 000000000..0ff61d00f
--- /dev/null
+++ b/drivers/s390/net/fsm.c
@@ -0,0 +1,210 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * A generic FSM based on fsm used in isdn4linux
+ *
+ */
+
+#include "fsm.h"
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+
+MODULE_AUTHOR("(C) 2000 IBM Corp. by Fritz Elfert (felfert@millenux.com)");
+MODULE_DESCRIPTION("Finite state machine helper functions");
+MODULE_LICENSE("GPL");
+
+fsm_instance *
+init_fsm(char *name, const char **state_names, const char **event_names, int nr_states,
+		int nr_events, const fsm_node *tmpl, int tmpl_len, gfp_t order)
+{
+	int i;
+	fsm_instance *this;
+	fsm_function_t *m;
+	fsm *f;
+
+	this = kzalloc(sizeof(fsm_instance), order);
+	if (this == NULL) {
+		printk(KERN_WARNING
+			"fsm(%s): init_fsm: Couldn't alloc instance\n", name);
+		return NULL;
+	}
+	strscpy(this->name, name, sizeof(this->name));
+	init_waitqueue_head(&this->wait_q);
+
+	f = kzalloc(sizeof(fsm), order);
+	if (f == NULL) {
+		printk(KERN_WARNING
+			"fsm(%s): init_fsm: Couldn't alloc fsm\n", name);
+		kfree_fsm(this);
+		return NULL;
+	}
+	f->nr_events = nr_events;
+	f->nr_states = nr_states;
+	f->event_names = event_names;
+	f->state_names = state_names;
+	this->f = f;
+
+	m = kcalloc(nr_states*nr_events, sizeof(fsm_function_t), order);
+	if (m == NULL) {
+		printk(KERN_WARNING
+			"fsm(%s): init_fsm: Couldn't alloc jumptable\n", name);
+		kfree_fsm(this);
+		return NULL;
+	}
+	f->jumpmatrix = m;
+
+	for (i = 0; i < tmpl_len; i++) {
+		if ((tmpl[i].cond_state >= nr_states) ||
+		    (tmpl[i].cond_event >= nr_events)   ) {
+			printk(KERN_ERR
+				"fsm(%s): init_fsm: Bad template l=%d st(%ld/%ld) ev(%ld/%ld)\n",
+				name, i, (long)tmpl[i].cond_state, (long)f->nr_states,
+				(long)tmpl[i].cond_event, (long)f->nr_events);
+			kfree_fsm(this);
+			return NULL;
+		} else
+			m[nr_states * tmpl[i].cond_event + tmpl[i].cond_state] =
+				tmpl[i].function;
+	}
+	return this;
+}
+
+void
+kfree_fsm(fsm_instance *this)
+{
+	if (this) {
+		if (this->f) {
+			kfree(this->f->jumpmatrix);
+			kfree(this->f);
+		}
+		kfree(this);
+	} else
+		printk(KERN_WARNING
+			"fsm: kfree_fsm called with NULL argument\n");
+}
+
+#if FSM_DEBUG_HISTORY
+void
+fsm_print_history(fsm_instance *fi)
+{
+	int idx = 0;
+	int i;
+
+	if (fi->history_size >= FSM_HISTORY_SIZE)
+		idx = fi->history_index;
+
+	printk(KERN_DEBUG "fsm(%s): History:\n", fi->name);
+	for (i = 0; i < fi->history_size; i++) {
+		int e = fi->history[idx].event;
+		int s = fi->history[idx++].state;
+		idx %= FSM_HISTORY_SIZE;
+		if (e == -1)
+			printk(KERN_DEBUG "  S=%s\n",
+			       fi->f->state_names[s]);
+		else
+			printk(KERN_DEBUG "  S=%s E=%s\n",
+			       fi->f->state_names[s],
+			       fi->f->event_names[e]);
+	}
+	fi->history_size = fi->history_index = 0;
+}
+
+void
+fsm_record_history(fsm_instance *fi, int state, int event)
+{
+	fi->history[fi->history_index].state = state;
+	fi->history[fi->history_index++].event = event;
+	fi->history_index %= FSM_HISTORY_SIZE;
+	if (fi->history_size < FSM_HISTORY_SIZE)
+		fi->history_size++;
+}
+#endif
+
+const char *
+fsm_getstate_str(fsm_instance *fi)
+{
+	int st = atomic_read(&fi->state);
+	if (st >= fi->f->nr_states)
+		return "Invalid";
+	return fi->f->state_names[st];
+}
+
+static void
+fsm_expire_timer(struct timer_list *t)
+{
+	fsm_timer *this = from_timer(this, t, tl);
+#if FSM_TIMER_DEBUG
+	printk(KERN_DEBUG "fsm(%s): Timer %p expired\n",
+	       this->fi->name, this);
+#endif
+	fsm_event(this->fi, this->expire_event, this->event_arg);
+}
+
+void
+fsm_settimer(fsm_instance *fi, fsm_timer *this)
+{
+	this->fi = fi;
+#if FSM_TIMER_DEBUG
+	printk(KERN_DEBUG "fsm(%s): Create timer %p\n", fi->name,
+	       this);
+#endif
+	timer_setup(&this->tl, fsm_expire_timer, 0);
+}
+
+void
+fsm_deltimer(fsm_timer *this)
+{
+#if FSM_TIMER_DEBUG
+	printk(KERN_DEBUG "fsm(%s): Delete timer %p\n", this->fi->name,
+		this);
+#endif
+	del_timer(&this->tl);
+}
+
+int
+fsm_addtimer(fsm_timer *this, int millisec, int event, void *arg)
+{
+
+#if FSM_TIMER_DEBUG
+	printk(KERN_DEBUG "fsm(%s): Add timer %p %dms\n",
+	       this->fi->name, this, millisec);
+#endif
+
+	timer_setup(&this->tl, fsm_expire_timer, 0);
+	this->expire_event = event;
+	this->event_arg = arg;
+	this->tl.expires = jiffies + (millisec * HZ) / 1000;
+	add_timer(&this->tl);
+	return 0;
+}
+
+/* FIXME: this function is never used, why */
+void
+fsm_modtimer(fsm_timer *this, int millisec, int event, void *arg)
+{
+
+#if FSM_TIMER_DEBUG
+	printk(KERN_DEBUG "fsm(%s): Restart timer %p %dms\n",
+		this->fi->name, this, millisec);
+#endif
+
+	del_timer(&this->tl);
+	timer_setup(&this->tl, fsm_expire_timer, 0);
+	this->expire_event = event;
+	this->event_arg = arg;
+	this->tl.expires = jiffies + (millisec * HZ) / 1000;
+	add_timer(&this->tl);
+}
+
+EXPORT_SYMBOL(init_fsm);
+EXPORT_SYMBOL(kfree_fsm);
+EXPORT_SYMBOL(fsm_settimer);
+EXPORT_SYMBOL(fsm_deltimer);
+EXPORT_SYMBOL(fsm_addtimer);
+EXPORT_SYMBOL(fsm_modtimer);
+EXPORT_SYMBOL(fsm_getstate_str);
+
+#if FSM_DEBUG_HISTORY
+EXPORT_SYMBOL(fsm_print_history);
+EXPORT_SYMBOL(fsm_record_history);
+#endif