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, 355 insertions, 0 deletions

diff --git a/drivers/net/ethernet/qlogic/qede/qede_rdma.c b/drivers/net/ethernet/qlogic/qede/qede_rdma.c
new file mode 100644
index 000000000..6304514a6
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qede/qede_rdma.c
@@ -0,0 +1,355 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2017  QLogic Corporation
+ * Copyright (c) 2019-2020 Marvell International Ltd.
+ */
+
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/qed/qede_rdma.h>
+#include "qede.h"
+
+static struct qedr_driver *qedr_drv;
+static LIST_HEAD(qedr_dev_list);
+static DEFINE_MUTEX(qedr_dev_list_lock);
+
+bool qede_rdma_supported(struct qede_dev *dev)
+{
+	return dev->dev_info.common.rdma_supported;
+}
+
+static void _qede_rdma_dev_add(struct qede_dev *edev)
+{
+	if (!qedr_drv)
+		return;
+
+	/* Leftovers from previous error recovery */
+	edev->rdma_info.exp_recovery = false;
+	edev->rdma_info.qedr_dev = qedr_drv->add(edev->cdev, edev->pdev,
+						 edev->ndev);
+}
+
+static int qede_rdma_create_wq(struct qede_dev *edev)
+{
+	INIT_LIST_HEAD(&edev->rdma_info.rdma_event_list);
+	kref_init(&edev->rdma_info.refcnt);
+	init_completion(&edev->rdma_info.event_comp);
+
+	edev->rdma_info.rdma_wq = create_singlethread_workqueue("rdma_wq");
+	if (!edev->rdma_info.rdma_wq) {
+		DP_NOTICE(edev, "qedr: Could not create workqueue\n");
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void qede_rdma_cleanup_event(struct qede_dev *edev)
+{
+	struct list_head *head = &edev->rdma_info.rdma_event_list;
+	struct qede_rdma_event_work *event_node;
+
+	flush_workqueue(edev->rdma_info.rdma_wq);
+	while (!list_empty(head)) {
+		event_node = list_entry(head->next, struct qede_rdma_event_work,
+					list);
+		cancel_work_sync(&event_node->work);
+		list_del(&event_node->list);
+		kfree(event_node);
+	}
+}
+
+static void qede_rdma_complete_event(struct kref *ref)
+{
+	struct qede_rdma_dev *rdma_dev =
+		container_of(ref, struct qede_rdma_dev, refcnt);
+
+	/* no more events will be added after this */
+	complete(&rdma_dev->event_comp);
+}
+
+static void qede_rdma_destroy_wq(struct qede_dev *edev)
+{
+	/* Avoid race with add_event flow, make sure it finishes before
+	 * we start accessing the list and cleaning up the work
+	 */
+	kref_put(&edev->rdma_info.refcnt, qede_rdma_complete_event);
+	wait_for_completion(&edev->rdma_info.event_comp);
+
+	qede_rdma_cleanup_event(edev);
+	destroy_workqueue(edev->rdma_info.rdma_wq);
+	edev->rdma_info.rdma_wq = NULL;
+}
+
+int qede_rdma_dev_add(struct qede_dev *edev, bool recovery)
+{
+	int rc;
+
+	if (!qede_rdma_supported(edev))
+		return 0;
+
+	/* Cannot start qedr while recovering since it wasn't fully stopped */
+	if (recovery)
+		return 0;
+
+	rc = qede_rdma_create_wq(edev);
+	if (rc)
+		return rc;
+
+	INIT_LIST_HEAD(&edev->rdma_info.entry);
+	mutex_lock(&qedr_dev_list_lock);
+	list_add_tail(&edev->rdma_info.entry, &qedr_dev_list);
+	_qede_rdma_dev_add(edev);
+	mutex_unlock(&qedr_dev_list_lock);
+
+	return rc;
+}
+
+static void _qede_rdma_dev_remove(struct qede_dev *edev)
+{
+	if (qedr_drv && qedr_drv->remove && edev->rdma_info.qedr_dev)
+		qedr_drv->remove(edev->rdma_info.qedr_dev);
+}
+
+void qede_rdma_dev_remove(struct qede_dev *edev, bool recovery)
+{
+	if (!qede_rdma_supported(edev))
+		return;
+
+	/* Cannot remove qedr while recovering since it wasn't fully stopped */
+	if (!recovery) {
+		qede_rdma_destroy_wq(edev);
+		mutex_lock(&qedr_dev_list_lock);
+		if (!edev->rdma_info.exp_recovery)
+			_qede_rdma_dev_remove(edev);
+		edev->rdma_info.qedr_dev = NULL;
+		list_del(&edev->rdma_info.entry);
+		mutex_unlock(&qedr_dev_list_lock);
+	} else {
+		if (!edev->rdma_info.exp_recovery) {
+			mutex_lock(&qedr_dev_list_lock);
+			_qede_rdma_dev_remove(edev);
+			mutex_unlock(&qedr_dev_list_lock);
+		}
+		edev->rdma_info.exp_recovery = true;
+	}
+}
+
+static void _qede_rdma_dev_open(struct qede_dev *edev)
+{
+	if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+		qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_UP);
+}
+
+static void qede_rdma_dev_open(struct qede_dev *edev)
+{
+	if (!qede_rdma_supported(edev))
+		return;
+
+	mutex_lock(&qedr_dev_list_lock);
+	_qede_rdma_dev_open(edev);
+	mutex_unlock(&qedr_dev_list_lock);
+}
+
+static void _qede_rdma_dev_close(struct qede_dev *edev)
+{
+	if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+		qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_DOWN);
+}
+
+static void qede_rdma_dev_close(struct qede_dev *edev)
+{
+	if (!qede_rdma_supported(edev))
+		return;
+
+	mutex_lock(&qedr_dev_list_lock);
+	_qede_rdma_dev_close(edev);
+	mutex_unlock(&qedr_dev_list_lock);
+}
+
+static void qede_rdma_dev_shutdown(struct qede_dev *edev)
+{
+	if (!qede_rdma_supported(edev))
+		return;
+
+	mutex_lock(&qedr_dev_list_lock);
+	if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+		qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_CLOSE);
+	mutex_unlock(&qedr_dev_list_lock);
+}
+
+int qede_rdma_register_driver(struct qedr_driver *drv)
+{
+	struct qede_dev *edev;
+	u8 qedr_counter = 0;
+
+	mutex_lock(&qedr_dev_list_lock);
+	if (qedr_drv) {
+		mutex_unlock(&qedr_dev_list_lock);
+		return -EINVAL;
+	}
+	qedr_drv = drv;
+
+	list_for_each_entry(edev, &qedr_dev_list, rdma_info.entry) {
+		struct net_device *ndev;
+
+		qedr_counter++;
+		_qede_rdma_dev_add(edev);
+		ndev = edev->ndev;
+		if (netif_running(ndev) && netif_oper_up(ndev))
+			_qede_rdma_dev_open(edev);
+	}
+	mutex_unlock(&qedr_dev_list_lock);
+
+	pr_notice("qedr: discovered and registered %d RDMA funcs\n",
+		  qedr_counter);
+
+	return 0;
+}
+EXPORT_SYMBOL(qede_rdma_register_driver);
+
+void qede_rdma_unregister_driver(struct qedr_driver *drv)
+{
+	struct qede_dev *edev;
+
+	mutex_lock(&qedr_dev_list_lock);
+	list_for_each_entry(edev, &qedr_dev_list, rdma_info.entry) {
+		/* If device has experienced recovery it was already removed */
+		if (edev->rdma_info.qedr_dev && !edev->rdma_info.exp_recovery)
+			_qede_rdma_dev_remove(edev);
+	}
+	qedr_drv = NULL;
+	mutex_unlock(&qedr_dev_list_lock);
+}
+EXPORT_SYMBOL(qede_rdma_unregister_driver);
+
+static void qede_rdma_changeaddr(struct qede_dev *edev)
+{
+	if (!qede_rdma_supported(edev))
+		return;
+
+	if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+		qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_CHANGE_ADDR);
+}
+
+static void qede_rdma_change_mtu(struct qede_dev *edev)
+{
+	if (qede_rdma_supported(edev)) {
+		if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+			qedr_drv->notify(edev->rdma_info.qedr_dev,
+					 QEDE_CHANGE_MTU);
+	}
+}
+
+static struct qede_rdma_event_work *
+qede_rdma_get_free_event_node(struct qede_dev *edev)
+{
+	struct qede_rdma_event_work *event_node = NULL;
+	bool found = false;
+
+	list_for_each_entry(event_node, &edev->rdma_info.rdma_event_list,
+			    list) {
+		if (!work_pending(&event_node->work)) {
+			found = true;
+			break;
+		}
+	}
+
+	if (!found) {
+		event_node = kzalloc(sizeof(*event_node), GFP_ATOMIC);
+		if (!event_node) {
+			DP_NOTICE(edev,
+				  "qedr: Could not allocate memory for rdma work\n");
+			return NULL;
+		}
+		list_add_tail(&event_node->list,
+			      &edev->rdma_info.rdma_event_list);
+	}
+
+	return event_node;
+}
+
+static void qede_rdma_handle_event(struct work_struct *work)
+{
+	struct qede_rdma_event_work *event_node;
+	enum qede_rdma_event event;
+	struct qede_dev *edev;
+
+	event_node = container_of(work, struct qede_rdma_event_work, work);
+	event = event_node->event;
+	edev = event_node->ptr;
+
+	switch (event) {
+	case QEDE_UP:
+		qede_rdma_dev_open(edev);
+		break;
+	case QEDE_DOWN:
+		qede_rdma_dev_close(edev);
+		break;
+	case QEDE_CLOSE:
+		qede_rdma_dev_shutdown(edev);
+		break;
+	case QEDE_CHANGE_ADDR:
+		qede_rdma_changeaddr(edev);
+		break;
+	case QEDE_CHANGE_MTU:
+		qede_rdma_change_mtu(edev);
+		break;
+	default:
+		DP_NOTICE(edev, "Invalid rdma event %d", event);
+	}
+}
+
+static void qede_rdma_add_event(struct qede_dev *edev,
+				enum qede_rdma_event event)
+{
+	struct qede_rdma_event_work *event_node;
+
+	/* If a recovery was experienced avoid adding the event */
+	if (edev->rdma_info.exp_recovery)
+		return;
+
+	if (!edev->rdma_info.qedr_dev || !edev->rdma_info.rdma_wq)
+		return;
+
+	/* We don't want the cleanup flow to start while we're allocating and
+	 * scheduling the work
+	 */
+	if (!kref_get_unless_zero(&edev->rdma_info.refcnt))
+		return; /* already being destroyed */
+
+	event_node = qede_rdma_get_free_event_node(edev);
+	if (!event_node)
+		goto out;
+
+	event_node->event = event;
+	event_node->ptr = edev;
+
+	INIT_WORK(&event_node->work, qede_rdma_handle_event);
+	queue_work(edev->rdma_info.rdma_wq, &event_node->work);
+
+out:
+	kref_put(&edev->rdma_info.refcnt, qede_rdma_complete_event);
+}
+
+void qede_rdma_dev_event_open(struct qede_dev *edev)
+{
+	qede_rdma_add_event(edev, QEDE_UP);
+}
+
+void qede_rdma_dev_event_close(struct qede_dev *edev)
+{
+	qede_rdma_add_event(edev, QEDE_DOWN);
+}
+
+void qede_rdma_event_changeaddr(struct qede_dev *edev)
+{
+	qede_rdma_add_event(edev, QEDE_CHANGE_ADDR);
+}
+
+void qede_rdma_event_change_mtu(struct qede_dev *edev)
+{
+	qede_rdma_add_event(edev, QEDE_CHANGE_MTU);
+}