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, 291 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
new file mode 100644
index 000000000..bdf2cc1ea
--- /dev/null
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -0,0 +1,291 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * zfcp device driver
+ *
+ * Registration and callback for the s390 common I/O layer.
+ *
+ * Copyright IBM Corp. 2002, 2010
+ */
+
+#define KMSG_COMPONENT "zfcp"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/module.h>
+#include "zfcp_ext.h"
+#include "zfcp_reqlist.h"
+
+#define ZFCP_MODEL_PRIV 0x4
+
+static DEFINE_SPINLOCK(zfcp_ccw_adapter_ref_lock);
+
+struct zfcp_adapter *zfcp_ccw_adapter_by_cdev(struct ccw_device *cdev)
+{
+	struct zfcp_adapter *adapter;
+	unsigned long flags;
+
+	spin_lock_irqsave(&zfcp_ccw_adapter_ref_lock, flags);
+	adapter = dev_get_drvdata(&cdev->dev);
+	if (adapter)
+		kref_get(&adapter->ref);
+	spin_unlock_irqrestore(&zfcp_ccw_adapter_ref_lock, flags);
+	return adapter;
+}
+
+void zfcp_ccw_adapter_put(struct zfcp_adapter *adapter)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&zfcp_ccw_adapter_ref_lock, flags);
+	kref_put(&adapter->ref, zfcp_adapter_release);
+	spin_unlock_irqrestore(&zfcp_ccw_adapter_ref_lock, flags);
+}
+
+/**
+ * zfcp_ccw_activate - activate adapter and wait for it to finish
+ * @cdev: pointer to belonging ccw device
+ * @clear: Status flags to clear.
+ * @tag: s390dbf trace record tag
+ */
+static int zfcp_ccw_activate(struct ccw_device *cdev, int clear, char *tag)
+{
+	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
+
+	if (!adapter)
+		return 0;
+
+	zfcp_erp_clear_adapter_status(adapter, clear);
+	zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
+	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
+				tag);
+
+	/*
+	 * We want to scan ports here, with some random backoff and without
+	 * rate limit. Recovery has already scheduled a port scan for us,
+	 * but with both random delay and rate limit. Nevertheless we get
+	 * what we want here by flushing the scheduled work after sleeping
+	 * an equivalent random time.
+	 * Let the port scan random delay elapse first. If recovery finishes
+	 * up to that point in time, that would be perfect for both recovery
+	 * and port scan. If not, i.e. recovery takes ages, there was no
+	 * point in waiting a random delay on top of the time consumed by
+	 * recovery.
+	 */
+	msleep(zfcp_fc_port_scan_backoff());
+	zfcp_erp_wait(adapter);
+	flush_delayed_work(&adapter->scan_work);
+
+	zfcp_ccw_adapter_put(adapter);
+
+	return 0;
+}
+
+static struct ccw_device_id zfcp_ccw_device_id[] = {
+	{ CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, 0x3) },
+	{ CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, ZFCP_MODEL_PRIV) },
+	{},
+};
+MODULE_DEVICE_TABLE(ccw, zfcp_ccw_device_id);
+
+/**
+ * zfcp_ccw_probe - probe function of zfcp driver
+ * @cdev: pointer to belonging ccw device
+ *
+ * This function gets called by the common i/o layer for each FCP
+ * device found on the current system. This is only a stub to make cio
+ * work: To only allocate adapter resources for devices actually used,
+ * the allocation is deferred to the first call to ccw_set_online.
+ */
+static int zfcp_ccw_probe(struct ccw_device *cdev)
+{
+	return 0;
+}
+
+/**
+ * zfcp_ccw_remove - remove function of zfcp driver
+ * @cdev: pointer to belonging ccw device
+ *
+ * This function gets called by the common i/o layer and removes an adapter
+ * from the system. Task of this function is to get rid of all units and
+ * ports that belong to this adapter. And in addition all resources of this
+ * adapter will be freed too.
+ */
+static void zfcp_ccw_remove(struct ccw_device *cdev)
+{
+	struct zfcp_adapter *adapter;
+	struct zfcp_port *port, *p;
+	struct zfcp_unit *unit, *u;
+	LIST_HEAD(unit_remove_lh);
+	LIST_HEAD(port_remove_lh);
+
+	ccw_device_set_offline(cdev);
+
+	adapter = zfcp_ccw_adapter_by_cdev(cdev);
+	if (!adapter)
+		return;
+
+	write_lock_irq(&adapter->port_list_lock);
+	list_for_each_entry(port, &adapter->port_list, list) {
+		write_lock(&port->unit_list_lock);
+		list_splice_init(&port->unit_list, &unit_remove_lh);
+		write_unlock(&port->unit_list_lock);
+	}
+	list_splice_init(&adapter->port_list, &port_remove_lh);
+	write_unlock_irq(&adapter->port_list_lock);
+	zfcp_ccw_adapter_put(adapter); /* put from zfcp_ccw_adapter_by_cdev */
+
+	list_for_each_entry_safe(unit, u, &unit_remove_lh, list)
+		device_unregister(&unit->dev);
+
+	list_for_each_entry_safe(port, p, &port_remove_lh, list)
+		device_unregister(&port->dev);
+
+	zfcp_adapter_unregister(adapter);
+}
+
+/**
+ * zfcp_ccw_set_online - set_online function of zfcp driver
+ * @cdev: pointer to belonging ccw device
+ *
+ * This function gets called by the common i/o layer and sets an
+ * adapter into state online.  The first call will allocate all
+ * adapter resources that will be retained until the device is removed
+ * via zfcp_ccw_remove.
+ *
+ * Setting an fcp device online means that it will be registered with
+ * the SCSI stack, that the QDIO queues will be set up and that the
+ * adapter will be opened.
+ */
+static int zfcp_ccw_set_online(struct ccw_device *cdev)
+{
+	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
+
+	if (!adapter) {
+		adapter = zfcp_adapter_enqueue(cdev);
+
+		if (IS_ERR(adapter)) {
+			dev_err(&cdev->dev,
+				"Setting up data structures for the "
+				"FCP adapter failed\n");
+			return PTR_ERR(adapter);
+		}
+		kref_get(&adapter->ref);
+	}
+
+	/* initialize request counter */
+	BUG_ON(!zfcp_reqlist_isempty(adapter->req_list));
+	adapter->req_no = 0;
+
+	zfcp_ccw_activate(cdev, 0, "ccsonl1");
+
+	/*
+	 * We want to scan ports here, always, with some random delay and
+	 * without rate limit - basically what zfcp_ccw_activate() has
+	 * achieved for us. Not quite! That port scan depended on
+	 * !no_auto_port_rescan. So let's cover the no_auto_port_rescan
+	 * case here to make sure a port scan is done unconditionally.
+	 * Since zfcp_ccw_activate() has waited the desired random time,
+	 * we can immediately schedule and flush a port scan for the
+	 * remaining cases.
+	 */
+	zfcp_fc_inverse_conditional_port_scan(adapter);
+	flush_delayed_work(&adapter->scan_work);
+	zfcp_ccw_adapter_put(adapter);
+	return 0;
+}
+
+/**
+ * zfcp_ccw_set_offline - set_offline function of zfcp driver
+ * @cdev: pointer to belonging ccw device
+ *
+ * This function gets called by the common i/o layer and sets an adapter
+ * into state offline.
+ */
+static int zfcp_ccw_set_offline(struct ccw_device *cdev)
+{
+	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
+
+	if (!adapter)
+		return 0;
+
+	zfcp_erp_set_adapter_status(adapter, 0);
+	zfcp_erp_adapter_shutdown(adapter, 0, "ccsoff1");
+	zfcp_erp_wait(adapter);
+
+	zfcp_ccw_adapter_put(adapter);
+	return 0;
+}
+
+/**
+ * zfcp_ccw_notify - ccw notify function
+ * @cdev: pointer to belonging ccw device
+ * @event: indicates if adapter was detached or attached
+ *
+ * This function gets called by the common i/o layer if an adapter has gone
+ * or reappeared.
+ */
+static int zfcp_ccw_notify(struct ccw_device *cdev, int event)
+{
+	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
+
+	if (!adapter)
+		return 1;
+
+	switch (event) {
+	case CIO_GONE:
+		dev_warn(&cdev->dev, "The FCP device has been detached\n");
+		zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti1");
+		break;
+	case CIO_NO_PATH:
+		dev_warn(&cdev->dev,
+			 "The CHPID for the FCP device is offline\n");
+		zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti2");
+		break;
+	case CIO_OPER:
+		dev_info(&cdev->dev, "The FCP device is operational again\n");
+		zfcp_erp_set_adapter_status(adapter,
+					    ZFCP_STATUS_COMMON_RUNNING);
+		zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
+					"ccnoti4");
+		break;
+	case CIO_BOXED:
+		dev_warn(&cdev->dev, "The FCP device did not respond within "
+				     "the specified time\n");
+		zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti5");
+		break;
+	}
+
+	zfcp_ccw_adapter_put(adapter);
+	return 1;
+}
+
+/**
+ * zfcp_ccw_shutdown - handle shutdown from cio
+ * @cdev: device for adapter to shutdown.
+ */
+static void zfcp_ccw_shutdown(struct ccw_device *cdev)
+{
+	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
+
+	if (!adapter)
+		return;
+
+	zfcp_erp_adapter_shutdown(adapter, 0, "ccshut1");
+	zfcp_erp_wait(adapter);
+	zfcp_erp_thread_kill(adapter);
+
+	zfcp_ccw_adapter_put(adapter);
+}
+
+struct ccw_driver zfcp_ccw_driver = {
+	.driver = {
+		.owner	= THIS_MODULE,
+		.name	= "zfcp",
+	},
+	.ids         = zfcp_ccw_device_id,
+	.probe       = zfcp_ccw_probe,
+	.remove      = zfcp_ccw_remove,
+	.set_online  = zfcp_ccw_set_online,
+	.set_offline = zfcp_ccw_set_offline,
+	.notify      = zfcp_ccw_notify,
+	.shutdown    = zfcp_ccw_shutdown,
+};