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, 314 insertions, 0 deletions

diff --git a/drivers/crypto/qat/qat_common/adf_vf_isr.c b/drivers/crypto/qat/qat_common/adf_vf_isr.c
new file mode 100644
index 000000000..8c95fcd8e
--- /dev/null
+++ b/drivers/crypto/qat/qat_common/adf_vf_isr.c
@@ -0,0 +1,314 @@
+// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
+/* Copyright(c) 2014 - 2020 Intel Corporation */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include "adf_accel_devices.h"
+#include "adf_common_drv.h"
+#include "adf_cfg.h"
+#include "adf_cfg_strings.h"
+#include "adf_cfg_common.h"
+#include "adf_transport_access_macros.h"
+#include "adf_transport_internal.h"
+
+#define ADF_VINTSOU_OFFSET	0x204
+#define ADF_VINTMSK_OFFSET	0x208
+#define ADF_VINTSOU_BUN		BIT(0)
+#define ADF_VINTSOU_PF2VF	BIT(1)
+
+static struct workqueue_struct *adf_vf_stop_wq;
+
+struct adf_vf_stop_data {
+	struct adf_accel_dev *accel_dev;
+	struct work_struct work;
+};
+
+void adf_enable_pf2vf_interrupts(struct adf_accel_dev *accel_dev)
+{
+	void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev);
+
+	ADF_CSR_WR(pmisc_addr, ADF_VINTMSK_OFFSET, 0x0);
+}
+
+void adf_disable_pf2vf_interrupts(struct adf_accel_dev *accel_dev)
+{
+	void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev);
+
+	ADF_CSR_WR(pmisc_addr, ADF_VINTMSK_OFFSET, 0x2);
+}
+EXPORT_SYMBOL_GPL(adf_disable_pf2vf_interrupts);
+
+static int adf_enable_msi(struct adf_accel_dev *accel_dev)
+{
+	struct adf_accel_pci *pci_dev_info = &accel_dev->accel_pci_dev;
+	int stat = pci_alloc_irq_vectors(pci_dev_info->pci_dev, 1, 1,
+					 PCI_IRQ_MSI);
+	if (unlikely(stat < 0)) {
+		dev_err(&GET_DEV(accel_dev),
+			"Failed to enable MSI interrupt: %d\n", stat);
+		return stat;
+	}
+
+	return 0;
+}
+
+static void adf_disable_msi(struct adf_accel_dev *accel_dev)
+{
+	struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
+
+	pci_free_irq_vectors(pdev);
+}
+
+static void adf_dev_stop_async(struct work_struct *work)
+{
+	struct adf_vf_stop_data *stop_data =
+		container_of(work, struct adf_vf_stop_data, work);
+	struct adf_accel_dev *accel_dev = stop_data->accel_dev;
+
+	adf_dev_restarting_notify(accel_dev);
+	adf_dev_stop(accel_dev);
+	adf_dev_shutdown(accel_dev);
+
+	/* Re-enable PF2VF interrupts */
+	adf_enable_pf2vf_interrupts(accel_dev);
+	kfree(stop_data);
+}
+
+int adf_pf2vf_handle_pf_restarting(struct adf_accel_dev *accel_dev)
+{
+	struct adf_vf_stop_data *stop_data;
+
+	clear_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+	stop_data = kzalloc(sizeof(*stop_data), GFP_ATOMIC);
+	if (!stop_data) {
+		dev_err(&GET_DEV(accel_dev),
+			"Couldn't schedule stop for vf_%d\n",
+			accel_dev->accel_id);
+		return -ENOMEM;
+	}
+	stop_data->accel_dev = accel_dev;
+	INIT_WORK(&stop_data->work, adf_dev_stop_async);
+	queue_work(adf_vf_stop_wq, &stop_data->work);
+
+	return 0;
+}
+
+static void adf_pf2vf_bh_handler(void *data)
+{
+	struct adf_accel_dev *accel_dev = data;
+	bool ret;
+
+	ret = adf_recv_and_handle_pf2vf_msg(accel_dev);
+	if (ret)
+		/* Re-enable PF2VF interrupts */
+		adf_enable_pf2vf_interrupts(accel_dev);
+
+	return;
+
+}
+
+static int adf_setup_pf2vf_bh(struct adf_accel_dev *accel_dev)
+{
+	tasklet_init(&accel_dev->vf.pf2vf_bh_tasklet,
+		     (void *)adf_pf2vf_bh_handler, (unsigned long)accel_dev);
+
+	mutex_init(&accel_dev->vf.vf2pf_lock);
+	return 0;
+}
+
+static void adf_cleanup_pf2vf_bh(struct adf_accel_dev *accel_dev)
+{
+	tasklet_disable(&accel_dev->vf.pf2vf_bh_tasklet);
+	tasklet_kill(&accel_dev->vf.pf2vf_bh_tasklet);
+	mutex_destroy(&accel_dev->vf.vf2pf_lock);
+}
+
+static irqreturn_t adf_isr(int irq, void *privdata)
+{
+	struct adf_accel_dev *accel_dev = privdata;
+	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+	struct adf_hw_csr_ops *csr_ops = &hw_data->csr_ops;
+	struct adf_bar *pmisc =
+			&GET_BARS(accel_dev)[hw_data->get_misc_bar_id(hw_data)];
+	void __iomem *pmisc_bar_addr = pmisc->virt_addr;
+	bool handled = false;
+	u32 v_int, v_mask;
+
+	/* Read VF INT source CSR to determine the source of VF interrupt */
+	v_int = ADF_CSR_RD(pmisc_bar_addr, ADF_VINTSOU_OFFSET);
+
+	/* Read VF INT mask CSR to determine which sources are masked */
+	v_mask = ADF_CSR_RD(pmisc_bar_addr, ADF_VINTMSK_OFFSET);
+
+	/*
+	 * Recompute v_int ignoring sources that are masked. This is to
+	 * avoid rescheduling the tasklet for interrupts already handled
+	 */
+	v_int &= ~v_mask;
+
+	/* Check for PF2VF interrupt */
+	if (v_int & ADF_VINTSOU_PF2VF) {
+		/* Disable PF to VF interrupt */
+		adf_disable_pf2vf_interrupts(accel_dev);
+
+		/* Schedule tasklet to handle interrupt BH */
+		tasklet_hi_schedule(&accel_dev->vf.pf2vf_bh_tasklet);
+		handled = true;
+	}
+
+	/* Check bundle interrupt */
+	if (v_int & ADF_VINTSOU_BUN) {
+		struct adf_etr_data *etr_data = accel_dev->transport;
+		struct adf_etr_bank_data *bank = &etr_data->banks[0];
+
+		/* Disable Flag and Coalesce Ring Interrupts */
+		csr_ops->write_csr_int_flag_and_col(bank->csr_addr,
+						    bank->bank_number, 0);
+		tasklet_hi_schedule(&bank->resp_handler);
+		handled = true;
+	}
+
+	return handled ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static int adf_request_msi_irq(struct adf_accel_dev *accel_dev)
+{
+	struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
+	unsigned int cpu;
+	int ret;
+
+	snprintf(accel_dev->vf.irq_name, ADF_MAX_MSIX_VECTOR_NAME,
+		 "qat_%02x:%02d.%02d", pdev->bus->number, PCI_SLOT(pdev->devfn),
+		 PCI_FUNC(pdev->devfn));
+	ret = request_irq(pdev->irq, adf_isr, 0, accel_dev->vf.irq_name,
+			  (void *)accel_dev);
+	if (ret) {
+		dev_err(&GET_DEV(accel_dev), "failed to enable irq for %s\n",
+			accel_dev->vf.irq_name);
+		return ret;
+	}
+	cpu = accel_dev->accel_id % num_online_cpus();
+	irq_set_affinity_hint(pdev->irq, get_cpu_mask(cpu));
+	accel_dev->vf.irq_enabled = true;
+
+	return ret;
+}
+
+static int adf_setup_bh(struct adf_accel_dev *accel_dev)
+{
+	struct adf_etr_data *priv_data = accel_dev->transport;
+
+	tasklet_init(&priv_data->banks[0].resp_handler, adf_response_handler,
+		     (unsigned long)priv_data->banks);
+	return 0;
+}
+
+static void adf_cleanup_bh(struct adf_accel_dev *accel_dev)
+{
+	struct adf_etr_data *priv_data = accel_dev->transport;
+
+	tasklet_disable(&priv_data->banks[0].resp_handler);
+	tasklet_kill(&priv_data->banks[0].resp_handler);
+}
+
+/**
+ * adf_vf_isr_resource_free() - Free IRQ for acceleration device
+ * @accel_dev:  Pointer to acceleration device.
+ *
+ * Function frees interrupts for acceleration device virtual function.
+ */
+void adf_vf_isr_resource_free(struct adf_accel_dev *accel_dev)
+{
+	struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
+
+	if (accel_dev->vf.irq_enabled) {
+		irq_set_affinity_hint(pdev->irq, NULL);
+		free_irq(pdev->irq, accel_dev);
+	}
+	adf_cleanup_bh(accel_dev);
+	adf_cleanup_pf2vf_bh(accel_dev);
+	adf_disable_msi(accel_dev);
+}
+EXPORT_SYMBOL_GPL(adf_vf_isr_resource_free);
+
+/**
+ * adf_vf_isr_resource_alloc() - Allocate IRQ for acceleration device
+ * @accel_dev:  Pointer to acceleration device.
+ *
+ * Function allocates interrupts for acceleration device virtual function.
+ *
+ * Return: 0 on success, error code otherwise.
+ */
+int adf_vf_isr_resource_alloc(struct adf_accel_dev *accel_dev)
+{
+	if (adf_enable_msi(accel_dev))
+		goto err_out;
+
+	if (adf_setup_pf2vf_bh(accel_dev))
+		goto err_disable_msi;
+
+	if (adf_setup_bh(accel_dev))
+		goto err_cleanup_pf2vf_bh;
+
+	if (adf_request_msi_irq(accel_dev))
+		goto err_cleanup_bh;
+
+	return 0;
+
+err_cleanup_bh:
+	adf_cleanup_bh(accel_dev);
+
+err_cleanup_pf2vf_bh:
+	adf_cleanup_pf2vf_bh(accel_dev);
+
+err_disable_msi:
+	adf_disable_msi(accel_dev);
+
+err_out:
+	return -EFAULT;
+}
+EXPORT_SYMBOL_GPL(adf_vf_isr_resource_alloc);
+
+/**
+ * adf_flush_vf_wq() - Flush workqueue for VF
+ * @accel_dev:  Pointer to acceleration device.
+ *
+ * Function disables the PF/VF interrupts on the VF so that no new messages
+ * are received and flushes the workqueue 'adf_vf_stop_wq'.
+ *
+ * Return: void.
+ */
+void adf_flush_vf_wq(struct adf_accel_dev *accel_dev)
+{
+	adf_disable_pf2vf_interrupts(accel_dev);
+
+	flush_workqueue(adf_vf_stop_wq);
+}
+EXPORT_SYMBOL_GPL(adf_flush_vf_wq);
+
+/**
+ * adf_init_vf_wq() - Init workqueue for VF
+ *
+ * Function init workqueue 'adf_vf_stop_wq' for VF.
+ *
+ * Return: 0 on success, error code otherwise.
+ */
+int __init adf_init_vf_wq(void)
+{
+	adf_vf_stop_wq = alloc_workqueue("adf_vf_stop_wq", WQ_MEM_RECLAIM, 0);
+
+	return !adf_vf_stop_wq ? -EFAULT : 0;
+}
+
+void adf_exit_vf_wq(void)
+{
+	if (adf_vf_stop_wq)
+		destroy_workqueue(adf_vf_stop_wq);
+
+	adf_vf_stop_wq = NULL;
+}