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, 556 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c b/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c
new file mode 100644
index 000000000..e9c5e85ec
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c
@@ -0,0 +1,556 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
+ * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/irq.h>
+
+#include "mt76x02.h"
+#include "mt76x02_mcu.h"
+#include "trace.h"
+
+static void mt76x02_pre_tbtt_tasklet(struct tasklet_struct *t)
+{
+	struct mt76x02_dev *dev = from_tasklet(dev, t, mt76.pre_tbtt_tasklet);
+	struct mt76_dev *mdev = &dev->mt76;
+	struct mt76_queue *q = dev->mphy.q_tx[MT_TXQ_PSD];
+	struct beacon_bc_data data = {};
+	struct sk_buff *skb;
+	int i;
+
+	if (mt76_hw(dev)->conf.flags & IEEE80211_CONF_OFFCHANNEL)
+		return;
+
+	mt76x02_resync_beacon_timer(dev);
+
+	/* Prevent corrupt transmissions during update */
+	mt76_set(dev, MT_BCN_BYPASS_MASK, 0xffff);
+	dev->beacon_data_count = 0;
+
+	ieee80211_iterate_active_interfaces_atomic(mt76_hw(dev),
+		IEEE80211_IFACE_ITER_RESUME_ALL,
+		mt76x02_update_beacon_iter, dev);
+
+	mt76_wr(dev, MT_BCN_BYPASS_MASK,
+		0xff00 | ~(0xff00 >> dev->beacon_data_count));
+
+	mt76_csa_check(mdev);
+
+	if (mdev->csa_complete)
+		return;
+
+	mt76x02_enqueue_buffered_bc(dev, &data, 8);
+
+	if (!skb_queue_len(&data.q))
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(data.tail); i++) {
+		if (!data.tail[i])
+			continue;
+
+		mt76_skb_set_moredata(data.tail[i], false);
+	}
+
+	spin_lock(&q->lock);
+	while ((skb = __skb_dequeue(&data.q)) != NULL) {
+		struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+		struct ieee80211_vif *vif = info->control.vif;
+		struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
+
+		mt76_tx_queue_skb(dev, q, MT_TXQ_PSD, skb, &mvif->group_wcid,
+				  NULL);
+	}
+	spin_unlock(&q->lock);
+}
+
+static void mt76x02e_pre_tbtt_enable(struct mt76x02_dev *dev, bool en)
+{
+	if (en)
+		tasklet_enable(&dev->mt76.pre_tbtt_tasklet);
+	else
+		tasklet_disable(&dev->mt76.pre_tbtt_tasklet);
+}
+
+static void mt76x02e_beacon_enable(struct mt76x02_dev *dev, bool en)
+{
+	mt76_rmw_field(dev, MT_INT_TIMER_EN, MT_INT_TIMER_EN_PRE_TBTT_EN, en);
+	if (en)
+		mt76x02_irq_enable(dev, MT_INT_PRE_TBTT | MT_INT_TBTT);
+	else
+		mt76x02_irq_disable(dev, MT_INT_PRE_TBTT | MT_INT_TBTT);
+}
+
+void mt76x02e_init_beacon_config(struct mt76x02_dev *dev)
+{
+	static const struct mt76x02_beacon_ops beacon_ops = {
+		.nslots = 8,
+		.slot_size = 1024,
+		.pre_tbtt_enable = mt76x02e_pre_tbtt_enable,
+		.beacon_enable = mt76x02e_beacon_enable,
+	};
+
+	dev->beacon_ops = &beacon_ops;
+
+	/* Fire a pre-TBTT interrupt 8 ms before TBTT */
+	mt76_rmw_field(dev, MT_INT_TIMER_CFG, MT_INT_TIMER_CFG_PRE_TBTT,
+		       8 << 4);
+	mt76_rmw_field(dev, MT_INT_TIMER_CFG, MT_INT_TIMER_CFG_GP_TIMER,
+		       MT_DFS_GP_INTERVAL);
+	mt76_wr(dev, MT_INT_TIMER_EN, 0);
+
+	mt76x02_init_beacon_config(dev);
+}
+EXPORT_SYMBOL_GPL(mt76x02e_init_beacon_config);
+
+static int
+mt76x02_init_rx_queue(struct mt76x02_dev *dev, struct mt76_queue *q,
+		      int idx, int n_desc, int bufsize)
+{
+	int err;
+
+	err = mt76_queue_alloc(dev, q, idx, n_desc, bufsize,
+			       MT_RX_RING_BASE);
+	if (err < 0)
+		return err;
+
+	mt76x02_irq_enable(dev, MT_INT_RX_DONE(idx));
+
+	return 0;
+}
+
+static void mt76x02_process_tx_status_fifo(struct mt76x02_dev *dev)
+{
+	struct mt76x02_tx_status stat;
+	u8 update = 1;
+
+	while (kfifo_get(&dev->txstatus_fifo, &stat))
+		mt76x02_send_tx_status(dev, &stat, &update);
+}
+
+static void mt76x02_tx_worker(struct mt76_worker *w)
+{
+	struct mt76x02_dev *dev;
+
+	dev = container_of(w, struct mt76x02_dev, mt76.tx_worker);
+
+	mt76x02_mac_poll_tx_status(dev, false);
+	mt76x02_process_tx_status_fifo(dev);
+
+	mt76_txq_schedule_all(&dev->mphy);
+}
+
+static int mt76x02_poll_tx(struct napi_struct *napi, int budget)
+{
+	struct mt76x02_dev *dev = container_of(napi, struct mt76x02_dev,
+					       mt76.tx_napi);
+	int i;
+
+	mt76x02_mac_poll_tx_status(dev, false);
+
+	mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_WM], false);
+	for (i = MT_TXQ_PSD; i >= 0; i--)
+		mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[i], false);
+
+	if (napi_complete_done(napi, 0))
+		mt76x02_irq_enable(dev, MT_INT_TX_DONE_ALL);
+
+	mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_WM], false);
+	for (i = MT_TXQ_PSD; i >= 0; i--)
+		mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[i], false);
+
+	mt76_worker_schedule(&dev->mt76.tx_worker);
+
+	return 0;
+}
+
+int mt76x02_dma_init(struct mt76x02_dev *dev)
+{
+	struct mt76_txwi_cache __maybe_unused *t;
+	int i, ret, fifo_size;
+	struct mt76_queue *q;
+	void *status_fifo;
+
+	BUILD_BUG_ON(sizeof(struct mt76x02_rxwi) > MT_RX_HEADROOM);
+
+	fifo_size = roundup_pow_of_two(32 * sizeof(struct mt76x02_tx_status));
+	status_fifo = devm_kzalloc(dev->mt76.dev, fifo_size, GFP_KERNEL);
+	if (!status_fifo)
+		return -ENOMEM;
+
+	dev->mt76.tx_worker.fn = mt76x02_tx_worker;
+	tasklet_setup(&dev->mt76.pre_tbtt_tasklet, mt76x02_pre_tbtt_tasklet);
+
+	spin_lock_init(&dev->txstatus_fifo_lock);
+	kfifo_init(&dev->txstatus_fifo, status_fifo, fifo_size);
+
+	mt76_dma_attach(&dev->mt76);
+
+	mt76_wr(dev, MT_WPDMA_RST_IDX, ~0);
+
+	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
+		ret = mt76_init_tx_queue(&dev->mphy, i, mt76_ac_to_hwq(i),
+					 MT76x02_TX_RING_SIZE,
+					 MT_TX_RING_BASE, 0);
+		if (ret)
+			return ret;
+	}
+
+	ret = mt76_init_tx_queue(&dev->mphy, MT_TXQ_PSD, MT_TX_HW_QUEUE_MGMT,
+				 MT76x02_PSD_RING_SIZE, MT_TX_RING_BASE, 0);
+	if (ret)
+		return ret;
+
+	ret = mt76_init_mcu_queue(&dev->mt76, MT_MCUQ_WM, MT_TX_HW_QUEUE_MCU,
+				  MT_MCU_RING_SIZE, MT_TX_RING_BASE);
+	if (ret)
+		return ret;
+
+	mt76x02_irq_enable(dev,
+			   MT_INT_TX_DONE(IEEE80211_AC_VO) |
+			   MT_INT_TX_DONE(IEEE80211_AC_VI) |
+			   MT_INT_TX_DONE(IEEE80211_AC_BE) |
+			   MT_INT_TX_DONE(IEEE80211_AC_BK) |
+			   MT_INT_TX_DONE(MT_TX_HW_QUEUE_MGMT) |
+			   MT_INT_TX_DONE(MT_TX_HW_QUEUE_MCU));
+
+	ret = mt76x02_init_rx_queue(dev, &dev->mt76.q_rx[MT_RXQ_MCU], 1,
+				    MT_MCU_RING_SIZE, MT_RX_BUF_SIZE);
+	if (ret)
+		return ret;
+
+	q = &dev->mt76.q_rx[MT_RXQ_MAIN];
+	q->buf_offset = MT_RX_HEADROOM - sizeof(struct mt76x02_rxwi);
+	ret = mt76x02_init_rx_queue(dev, q, 0, MT76X02_RX_RING_SIZE,
+				    MT_RX_BUF_SIZE);
+	if (ret)
+		return ret;
+
+	ret = mt76_init_queues(dev, mt76_dma_rx_poll);
+	if (ret)
+		return ret;
+
+	netif_napi_add_tx(&dev->mt76.tx_napi_dev, &dev->mt76.tx_napi,
+			  mt76x02_poll_tx);
+	napi_enable(&dev->mt76.tx_napi);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(mt76x02_dma_init);
+
+void mt76x02_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q)
+{
+	struct mt76x02_dev *dev;
+
+	dev = container_of(mdev, struct mt76x02_dev, mt76);
+	mt76x02_irq_enable(dev, MT_INT_RX_DONE(q));
+}
+EXPORT_SYMBOL_GPL(mt76x02_rx_poll_complete);
+
+irqreturn_t mt76x02_irq_handler(int irq, void *dev_instance)
+{
+	struct mt76x02_dev *dev = dev_instance;
+	u32 intr, mask;
+
+	intr = mt76_rr(dev, MT_INT_SOURCE_CSR);
+	intr &= dev->mt76.mmio.irqmask;
+	mt76_wr(dev, MT_INT_SOURCE_CSR, intr);
+
+	if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
+		return IRQ_NONE;
+
+	trace_dev_irq(&dev->mt76, intr, dev->mt76.mmio.irqmask);
+
+	mask = intr & (MT_INT_RX_DONE_ALL | MT_INT_GPTIMER);
+	if (intr & (MT_INT_TX_DONE_ALL | MT_INT_TX_STAT))
+		mask |= MT_INT_TX_DONE_ALL;
+
+	mt76x02_irq_disable(dev, mask);
+
+	if (intr & MT_INT_RX_DONE(0))
+		napi_schedule(&dev->mt76.napi[0]);
+
+	if (intr & MT_INT_RX_DONE(1))
+		napi_schedule(&dev->mt76.napi[1]);
+
+	if (intr & MT_INT_PRE_TBTT)
+		tasklet_schedule(&dev->mt76.pre_tbtt_tasklet);
+
+	/* send buffered multicast frames now */
+	if (intr & MT_INT_TBTT) {
+		if (dev->mt76.csa_complete)
+			mt76_csa_finish(&dev->mt76);
+		else
+			mt76_queue_kick(dev, dev->mphy.q_tx[MT_TXQ_PSD]);
+	}
+
+	if (intr & MT_INT_TX_STAT)
+		mt76x02_mac_poll_tx_status(dev, true);
+
+	if (intr & (MT_INT_TX_STAT | MT_INT_TX_DONE_ALL))
+		napi_schedule(&dev->mt76.tx_napi);
+
+	if (intr & MT_INT_GPTIMER)
+		tasklet_schedule(&dev->dfs_pd.dfs_tasklet);
+
+	return IRQ_HANDLED;
+}
+EXPORT_SYMBOL_GPL(mt76x02_irq_handler);
+
+static void mt76x02_dma_enable(struct mt76x02_dev *dev)
+{
+	u32 val;
+
+	mt76_wr(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_ENABLE_TX);
+	mt76x02_wait_for_wpdma(&dev->mt76, 1000);
+	usleep_range(50, 100);
+
+	val = FIELD_PREP(MT_WPDMA_GLO_CFG_DMA_BURST_SIZE, 3) |
+	      MT_WPDMA_GLO_CFG_TX_DMA_EN |
+	      MT_WPDMA_GLO_CFG_RX_DMA_EN;
+	mt76_set(dev, MT_WPDMA_GLO_CFG, val);
+	mt76_clear(dev, MT_WPDMA_GLO_CFG,
+		   MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE);
+}
+
+void mt76x02_dma_disable(struct mt76x02_dev *dev)
+{
+	u32 val = mt76_rr(dev, MT_WPDMA_GLO_CFG);
+
+	val &= MT_WPDMA_GLO_CFG_DMA_BURST_SIZE |
+	       MT_WPDMA_GLO_CFG_BIG_ENDIAN |
+	       MT_WPDMA_GLO_CFG_HDR_SEG_LEN;
+	val |= MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE;
+	mt76_wr(dev, MT_WPDMA_GLO_CFG, val);
+}
+EXPORT_SYMBOL_GPL(mt76x02_dma_disable);
+
+void mt76x02_mac_start(struct mt76x02_dev *dev)
+{
+	mt76x02_mac_reset_counters(dev);
+	mt76x02_dma_enable(dev);
+	mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter);
+	mt76_wr(dev, MT_MAC_SYS_CTRL,
+		MT_MAC_SYS_CTRL_ENABLE_TX |
+		MT_MAC_SYS_CTRL_ENABLE_RX);
+	mt76x02_irq_enable(dev,
+			   MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL |
+			   MT_INT_TX_STAT);
+}
+EXPORT_SYMBOL_GPL(mt76x02_mac_start);
+
+static bool mt76x02_tx_hang(struct mt76x02_dev *dev)
+{
+	u32 dma_idx, prev_dma_idx;
+	struct mt76_queue *q;
+	int i;
+
+	for (i = 0; i < 4; i++) {
+		q = dev->mphy.q_tx[i];
+
+		prev_dma_idx = dev->mt76.tx_dma_idx[i];
+		dma_idx = readl(&q->regs->dma_idx);
+		dev->mt76.tx_dma_idx[i] = dma_idx;
+
+		if (!q->queued || prev_dma_idx != dma_idx) {
+			dev->tx_hang_check[i] = 0;
+			continue;
+		}
+
+		if (++dev->tx_hang_check[i] >= MT_TX_HANG_TH)
+			return true;
+	}
+
+	return false;
+}
+
+static void mt76x02_key_sync(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+			     struct ieee80211_sta *sta,
+			     struct ieee80211_key_conf *key, void *data)
+{
+	struct mt76x02_dev *dev = hw->priv;
+	struct mt76_wcid *wcid;
+
+	if (!sta)
+		return;
+
+	wcid = (struct mt76_wcid *)sta->drv_priv;
+
+	if (wcid->hw_key_idx != key->keyidx || wcid->sw_iv)
+		return;
+
+	mt76x02_mac_wcid_sync_pn(dev, wcid->idx, key);
+}
+
+static void mt76x02_reset_state(struct mt76x02_dev *dev)
+{
+	int i;
+
+	lockdep_assert_held(&dev->mt76.mutex);
+
+	clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
+
+	rcu_read_lock();
+	ieee80211_iter_keys_rcu(dev->mt76.hw, NULL, mt76x02_key_sync, NULL);
+	rcu_read_unlock();
+
+	for (i = 0; i < MT76x02_N_WCIDS; i++) {
+		struct ieee80211_sta *sta;
+		struct ieee80211_vif *vif;
+		struct mt76x02_sta *msta;
+		struct mt76_wcid *wcid;
+		void *priv;
+
+		wcid = rcu_dereference_protected(dev->mt76.wcid[i],
+					lockdep_is_held(&dev->mt76.mutex));
+		if (!wcid)
+			continue;
+
+		rcu_assign_pointer(dev->mt76.wcid[i], NULL);
+
+		priv = msta = container_of(wcid, struct mt76x02_sta, wcid);
+		sta = container_of(priv, struct ieee80211_sta, drv_priv);
+
+		priv = msta->vif;
+		vif = container_of(priv, struct ieee80211_vif, drv_priv);
+
+		__mt76_sta_remove(&dev->mt76, vif, sta);
+		memset(msta, 0, sizeof(*msta));
+	}
+
+	dev->mt76.vif_mask = 0;
+	dev->mt76.beacon_mask = 0;
+}
+
+static void mt76x02_watchdog_reset(struct mt76x02_dev *dev)
+{
+	u32 mask = dev->mt76.mmio.irqmask;
+	bool restart = dev->mt76.mcu_ops->mcu_restart;
+	int i;
+
+	ieee80211_stop_queues(dev->mt76.hw);
+	set_bit(MT76_RESET, &dev->mphy.state);
+
+	tasklet_disable(&dev->mt76.pre_tbtt_tasklet);
+	mt76_worker_disable(&dev->mt76.tx_worker);
+	napi_disable(&dev->mt76.tx_napi);
+
+	mt76_for_each_q_rx(&dev->mt76, i) {
+		napi_disable(&dev->mt76.napi[i]);
+	}
+
+	mutex_lock(&dev->mt76.mutex);
+
+	dev->mcu_timeout = 0;
+	if (restart)
+		mt76x02_reset_state(dev);
+
+	if (dev->mt76.beacon_mask)
+		mt76_clear(dev, MT_BEACON_TIME_CFG,
+			   MT_BEACON_TIME_CFG_BEACON_TX |
+			   MT_BEACON_TIME_CFG_TBTT_EN);
+
+	mt76x02_irq_disable(dev, mask);
+
+	/* perform device reset */
+	mt76_clear(dev, MT_TXOP_CTRL_CFG, MT_TXOP_ED_CCA_EN);
+	mt76_wr(dev, MT_MAC_SYS_CTRL, 0);
+	mt76_clear(dev, MT_WPDMA_GLO_CFG,
+		   MT_WPDMA_GLO_CFG_TX_DMA_EN | MT_WPDMA_GLO_CFG_RX_DMA_EN);
+	usleep_range(5000, 10000);
+	mt76_wr(dev, MT_INT_SOURCE_CSR, 0xffffffff);
+
+	/* let fw reset DMA */
+	mt76_set(dev, 0x734, 0x3);
+
+	if (restart)
+		mt76_mcu_restart(dev);
+
+	mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_WM], true);
+	for (i = 0; i < __MT_TXQ_MAX; i++)
+		mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[i], true);
+
+	mt76_for_each_q_rx(&dev->mt76, i) {
+		mt76_queue_rx_reset(dev, i);
+	}
+
+	mt76_tx_status_check(&dev->mt76, true);
+
+	mt76x02_mac_start(dev);
+
+	if (dev->ed_monitor)
+		mt76_set(dev, MT_TXOP_CTRL_CFG, MT_TXOP_ED_CCA_EN);
+
+	if (dev->mt76.beacon_mask && !restart)
+		mt76_set(dev, MT_BEACON_TIME_CFG,
+			 MT_BEACON_TIME_CFG_BEACON_TX |
+			 MT_BEACON_TIME_CFG_TBTT_EN);
+
+	mt76x02_irq_enable(dev, mask);
+
+	mutex_unlock(&dev->mt76.mutex);
+
+	clear_bit(MT76_RESET, &dev->mphy.state);
+
+	mt76_worker_enable(&dev->mt76.tx_worker);
+	tasklet_enable(&dev->mt76.pre_tbtt_tasklet);
+
+	local_bh_disable();
+	napi_enable(&dev->mt76.tx_napi);
+	napi_schedule(&dev->mt76.tx_napi);
+
+	mt76_for_each_q_rx(&dev->mt76, i) {
+		napi_enable(&dev->mt76.napi[i]);
+		napi_schedule(&dev->mt76.napi[i]);
+	}
+	local_bh_enable();
+
+	if (restart) {
+		set_bit(MT76_RESTART, &dev->mphy.state);
+		mt76x02_mcu_function_select(dev, Q_SELECT, 1);
+		ieee80211_restart_hw(dev->mt76.hw);
+	} else {
+		ieee80211_wake_queues(dev->mt76.hw);
+		mt76_txq_schedule_all(&dev->mphy);
+	}
+}
+
+void mt76x02_reconfig_complete(struct ieee80211_hw *hw,
+			       enum ieee80211_reconfig_type reconfig_type)
+{
+	struct mt76x02_dev *dev = hw->priv;
+
+	if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
+		return;
+
+	clear_bit(MT76_RESTART, &dev->mphy.state);
+}
+EXPORT_SYMBOL_GPL(mt76x02_reconfig_complete);
+
+static void mt76x02_check_tx_hang(struct mt76x02_dev *dev)
+{
+	if (test_bit(MT76_RESTART, &dev->mphy.state))
+		return;
+
+	if (!mt76x02_tx_hang(dev) && !dev->mcu_timeout)
+		return;
+
+	mt76x02_watchdog_reset(dev);
+
+	dev->tx_hang_reset++;
+	memset(dev->tx_hang_check, 0, sizeof(dev->tx_hang_check));
+	memset(dev->mt76.tx_dma_idx, 0xff,
+	       sizeof(dev->mt76.tx_dma_idx));
+}
+
+void mt76x02_wdt_work(struct work_struct *work)
+{
+	struct mt76x02_dev *dev = container_of(work, struct mt76x02_dev,
+					       wdt_work.work);
+
+	mt76x02_check_tx_hang(dev);
+
+	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->wdt_work,
+				     MT_WATCHDOG_TIME);
+}