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, 817 insertions, 0 deletions

diff --git a/drivers/net/wireless/silabs/wfx/sta.c b/drivers/net/wireless/silabs/wfx/sta.c
new file mode 100644
index 000000000..626dfb4b7
--- /dev/null
+++ b/drivers/net/wireless/silabs/wfx/sta.c
@@ -0,0 +1,817 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Implementation of mac80211 API.
+ *
+ * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
+ * Copyright (c) 2010, ST-Ericsson
+ */
+#include <linux/etherdevice.h>
+#include <net/mac80211.h>
+
+#include "sta.h"
+#include "wfx.h"
+#include "fwio.h"
+#include "bh.h"
+#include "key.h"
+#include "scan.h"
+#include "debug.h"
+#include "hif_tx.h"
+#include "hif_tx_mib.h"
+
+#define HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES 2
+
+u32 wfx_rate_mask_to_hw(struct wfx_dev *wdev, u32 rates)
+{
+	int i;
+	u32 ret = 0;
+	/* The device only supports 2GHz */
+	struct ieee80211_supported_band *sband = wdev->hw->wiphy->bands[NL80211_BAND_2GHZ];
+
+	for (i = 0; i < sband->n_bitrates; i++) {
+		if (rates & BIT(i)) {
+			if (i >= sband->n_bitrates)
+				dev_warn(wdev->dev, "unsupported basic rate\n");
+			else
+				ret |= BIT(sband->bitrates[i].hw_value);
+		}
+	}
+	return ret;
+}
+
+void wfx_cooling_timeout_work(struct work_struct *work)
+{
+	struct wfx_dev *wdev = container_of(to_delayed_work(work), struct wfx_dev,
+					    cooling_timeout_work);
+
+	wdev->chip_frozen = true;
+	wfx_tx_unlock(wdev);
+}
+
+void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd)
+{
+	if (cmd == STA_NOTIFY_AWAKE) {
+		/* Device recover normal temperature */
+		if (cancel_delayed_work(&wdev->cooling_timeout_work))
+			wfx_tx_unlock(wdev);
+	} else {
+		/* Device is too hot */
+		schedule_delayed_work(&wdev->cooling_timeout_work, 10 * HZ);
+		wfx_tx_lock(wdev);
+	}
+}
+
+static void wfx_filter_beacon(struct wfx_vif *wvif, bool filter_beacon)
+{
+	static const struct wfx_hif_ie_table_entry filter_ies[] = {
+		{
+			.ie_id        = WLAN_EID_VENDOR_SPECIFIC,
+			.has_changed  = 1,
+			.no_longer    = 1,
+			.has_appeared = 1,
+			.oui          = { 0x50, 0x6F, 0x9A },
+		}, {
+			.ie_id        = WLAN_EID_HT_OPERATION,
+			.has_changed  = 1,
+			.no_longer    = 1,
+			.has_appeared = 1,
+		}, {
+			.ie_id        = WLAN_EID_ERP_INFO,
+			.has_changed  = 1,
+			.no_longer    = 1,
+			.has_appeared = 1,
+		}, {
+			.ie_id        = WLAN_EID_CHANNEL_SWITCH,
+			.has_changed  = 1,
+			.no_longer    = 1,
+			.has_appeared = 1,
+		}
+	};
+
+	if (!filter_beacon) {
+		wfx_hif_beacon_filter_control(wvif, 0, 1);
+	} else {
+		wfx_hif_set_beacon_filter_table(wvif, ARRAY_SIZE(filter_ies), filter_ies);
+		wfx_hif_beacon_filter_control(wvif, HIF_BEACON_FILTER_ENABLE, 0);
+	}
+}
+
+void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
+			  unsigned int *total_flags, u64 unused)
+{
+	bool filter_bssid, filter_prbreq, filter_beacon;
+	struct ieee80211_vif *vif = NULL;
+	struct wfx_dev *wdev = hw->priv;
+	struct wfx_vif *wvif = NULL;
+
+	/* Notes:
+	 *   - Probe responses (FIF_BCN_PRBRESP_PROMISC) are never filtered
+	 *   - PS-Poll (FIF_PSPOLL) are never filtered
+	 *   - RTS, CTS and Ack (FIF_CONTROL) are always filtered
+	 *   - Broken frames (FIF_FCSFAIL and FIF_PLCPFAIL) are always filtered
+	 *   - Firmware does (yet) allow to forward unicast traffic sent to other stations (aka.
+	 *     promiscuous mode)
+	 */
+	*total_flags &= FIF_BCN_PRBRESP_PROMISC | FIF_ALLMULTI | FIF_OTHER_BSS |
+			FIF_PROBE_REQ | FIF_PSPOLL;
+
+	mutex_lock(&wdev->conf_mutex);
+	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
+		mutex_lock(&wvif->scan_lock);
+
+		/* Note: FIF_BCN_PRBRESP_PROMISC covers probe response and
+		 * beacons from other BSS
+		 */
+		if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
+			filter_beacon = false;
+		else
+			filter_beacon = true;
+		wfx_filter_beacon(wvif, filter_beacon);
+
+		if (*total_flags & FIF_OTHER_BSS)
+			filter_bssid = false;
+		else
+			filter_bssid = true;
+
+		vif = wvif_to_vif(wvif);
+		/* In AP mode, chip can reply to probe request itself */
+		if (*total_flags & FIF_PROBE_REQ && vif->type == NL80211_IFTYPE_AP) {
+			dev_dbg(wdev->dev, "do not forward probe request in AP mode\n");
+			*total_flags &= ~FIF_PROBE_REQ;
+		}
+
+		if (*total_flags & FIF_PROBE_REQ)
+			filter_prbreq = false;
+		else
+			filter_prbreq = true;
+		wfx_hif_set_rx_filter(wvif, filter_bssid, filter_prbreq);
+
+		mutex_unlock(&wvif->scan_lock);
+	}
+	mutex_unlock(&wdev->conf_mutex);
+}
+
+static int wfx_get_ps_timeout(struct wfx_vif *wvif, bool *enable_ps)
+{
+	struct ieee80211_channel *chan0 = NULL, *chan1 = NULL;
+	struct ieee80211_conf *conf = &wvif->wdev->hw->conf;
+	struct ieee80211_vif *vif = wvif_to_vif(wvif);
+
+	WARN(!vif->cfg.assoc && enable_ps,
+	     "enable_ps is reliable only if associated");
+	if (wdev_to_wvif(wvif->wdev, 0)) {
+		struct wfx_vif *wvif_ch0 = wdev_to_wvif(wvif->wdev, 0);
+		struct ieee80211_vif *vif_ch0 = wvif_to_vif(wvif_ch0);
+
+		chan0 = vif_ch0->bss_conf.chandef.chan;
+	}
+	if (wdev_to_wvif(wvif->wdev, 1)) {
+		struct wfx_vif *wvif_ch1 = wdev_to_wvif(wvif->wdev, 1);
+		struct ieee80211_vif *vif_ch1 = wvif_to_vif(wvif_ch1);
+
+		chan1 = vif_ch1->bss_conf.chandef.chan;
+	}
+	if (chan0 && chan1 && vif->type != NL80211_IFTYPE_AP) {
+		if (chan0->hw_value == chan1->hw_value) {
+			/* It is useless to enable PS if channels are the same. */
+			if (enable_ps)
+				*enable_ps = false;
+			if (vif->cfg.assoc && vif->cfg.ps)
+				dev_info(wvif->wdev->dev, "ignoring requested PS mode");
+			return -1;
+		}
+		/* It is necessary to enable PS if channels are different. */
+		if (enable_ps)
+			*enable_ps = true;
+		if (wfx_api_older_than(wvif->wdev, 3, 2))
+			return 0;
+		else
+			return 30;
+	}
+	if (enable_ps)
+		*enable_ps = vif->cfg.ps;
+	if (vif->cfg.assoc && vif->cfg.ps)
+		return conf->dynamic_ps_timeout;
+	else
+		return -1;
+}
+
+int wfx_update_pm(struct wfx_vif *wvif)
+{
+	struct ieee80211_vif *vif = wvif_to_vif(wvif);
+	int ps_timeout;
+	bool ps;
+
+	if (!vif->cfg.assoc)
+		return 0;
+	ps_timeout = wfx_get_ps_timeout(wvif, &ps);
+	if (!ps)
+		ps_timeout = 0;
+	WARN_ON(ps_timeout < 0);
+	if (wvif->uapsd_mask)
+		ps_timeout = 0;
+
+	if (!wait_for_completion_timeout(&wvif->set_pm_mode_complete, TU_TO_JIFFIES(512)))
+		dev_warn(wvif->wdev->dev, "timeout while waiting of set_pm_mode_complete\n");
+	return wfx_hif_set_pm(wvif, ps, ps_timeout);
+}
+
+int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+		unsigned int link_id, u16 queue,
+		const struct ieee80211_tx_queue_params *params)
+{
+	struct wfx_dev *wdev = hw->priv;
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+	int old_uapsd = wvif->uapsd_mask;
+
+	WARN_ON(queue >= hw->queues);
+
+	mutex_lock(&wdev->conf_mutex);
+	assign_bit(queue, &wvif->uapsd_mask, params->uapsd);
+	wfx_hif_set_edca_queue_params(wvif, queue, params);
+	if (vif->type == NL80211_IFTYPE_STATION &&
+	    old_uapsd != wvif->uapsd_mask) {
+		wfx_hif_set_uapsd_info(wvif, wvif->uapsd_mask);
+		wfx_update_pm(wvif);
+	}
+	mutex_unlock(&wdev->conf_mutex);
+	return 0;
+}
+
+int wfx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+{
+	struct wfx_dev *wdev = hw->priv;
+	struct wfx_vif *wvif = NULL;
+
+	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
+		wfx_hif_rts_threshold(wvif, value);
+	return 0;
+}
+
+void wfx_event_report_rssi(struct wfx_vif *wvif, u8 raw_rcpi_rssi)
+{
+	/* RSSI: signed Q8.0, RCPI: unsigned Q7.1
+	 * RSSI = RCPI / 2 - 110
+	 */
+	struct ieee80211_vif *vif = wvif_to_vif(wvif);
+	int rcpi_rssi;
+	int cqm_evt;
+
+	rcpi_rssi = raw_rcpi_rssi / 2 - 110;
+	if (rcpi_rssi <= vif->bss_conf.cqm_rssi_thold)
+		cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
+	else
+		cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
+	ieee80211_cqm_rssi_notify(vif, cqm_evt, rcpi_rssi, GFP_KERNEL);
+}
+
+static void wfx_beacon_loss_work(struct work_struct *work)
+{
+	struct wfx_vif *wvif = container_of(to_delayed_work(work), struct wfx_vif,
+					    beacon_loss_work);
+	struct ieee80211_vif *vif = wvif_to_vif(wvif);
+	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
+
+	ieee80211_beacon_loss(vif);
+	schedule_delayed_work(to_delayed_work(work), msecs_to_jiffies(bss_conf->beacon_int));
+}
+
+void wfx_set_default_unicast_key(struct ieee80211_hw *hw, struct ieee80211_vif *vif, int idx)
+{
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+
+	wfx_hif_wep_default_key_id(wvif, idx);
+}
+
+void wfx_reset(struct wfx_vif *wvif)
+{
+	struct wfx_dev *wdev = wvif->wdev;
+
+	wfx_tx_lock_flush(wdev);
+	wfx_hif_reset(wvif, false);
+	wfx_tx_policy_init(wvif);
+	if (wvif_count(wdev) <= 1)
+		wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
+	wfx_tx_unlock(wdev);
+	wvif->join_in_progress = false;
+	cancel_delayed_work_sync(&wvif->beacon_loss_work);
+	wvif =  NULL;
+	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
+		wfx_update_pm(wvif);
+}
+
+int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta)
+{
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+	struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv;
+
+	sta_priv->vif_id = wvif->id;
+
+	if (vif->type == NL80211_IFTYPE_STATION)
+		wfx_hif_set_mfp(wvif, sta->mfp, sta->mfp);
+
+	/* In station mode, the firmware interprets new link-id as a TDLS peer */
+	if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
+		return 0;
+	sta_priv->link_id = ffz(wvif->link_id_map);
+	wvif->link_id_map |= BIT(sta_priv->link_id);
+	WARN_ON(!sta_priv->link_id);
+	WARN_ON(sta_priv->link_id >= HIF_LINK_ID_MAX);
+	wfx_hif_map_link(wvif, false, sta->addr, sta_priv->link_id, sta->mfp);
+
+	return 0;
+}
+
+int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta)
+{
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+	struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv;
+
+	/* See note in wfx_sta_add() */
+	if (!sta_priv->link_id)
+		return 0;
+	/* FIXME add a mutex? */
+	wfx_hif_map_link(wvif, true, sta->addr, sta_priv->link_id, false);
+	wvif->link_id_map &= ~BIT(sta_priv->link_id);
+	return 0;
+}
+
+static int wfx_upload_ap_templates(struct wfx_vif *wvif)
+{
+	struct ieee80211_vif *vif = wvif_to_vif(wvif);
+	struct sk_buff *skb;
+
+	skb = ieee80211_beacon_get(wvif->wdev->hw, vif, 0);
+	if (!skb)
+		return -ENOMEM;
+	wfx_hif_set_template_frame(wvif, skb, HIF_TMPLT_BCN, API_RATE_INDEX_B_1MBPS);
+	dev_kfree_skb(skb);
+
+	skb = ieee80211_proberesp_get(wvif->wdev->hw, vif);
+	if (!skb)
+		return -ENOMEM;
+	wfx_hif_set_template_frame(wvif, skb, HIF_TMPLT_PRBRES, API_RATE_INDEX_B_1MBPS);
+	dev_kfree_skb(skb);
+	return 0;
+}
+
+static void wfx_set_mfp_ap(struct wfx_vif *wvif)
+{
+	struct ieee80211_vif *vif = wvif_to_vif(wvif);
+	struct sk_buff *skb = ieee80211_beacon_get(wvif->wdev->hw, vif, 0);
+	const int ieoffset = offsetof(struct ieee80211_mgmt, u.beacon.variable);
+	const u16 *ptr = (u16 *)cfg80211_find_ie(WLAN_EID_RSN, skb->data + ieoffset,
+						 skb->len - ieoffset);
+	const int pairwise_cipher_suite_count_offset = 8 / sizeof(u16);
+	const int pairwise_cipher_suite_size = 4 / sizeof(u16);
+	const int akm_suite_size = 4 / sizeof(u16);
+
+	if (ptr) {
+		ptr += pairwise_cipher_suite_count_offset;
+		if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
+			return;
+		ptr += 1 + pairwise_cipher_suite_size * *ptr;
+		if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
+			return;
+		ptr += 1 + akm_suite_size * *ptr;
+		if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
+			return;
+		wfx_hif_set_mfp(wvif, *ptr & BIT(7), *ptr & BIT(6));
+	}
+}
+
+int wfx_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+		 struct ieee80211_bss_conf *link_conf)
+{
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+	struct wfx_dev *wdev = wvif->wdev;
+	int ret;
+
+	wvif =  NULL;
+	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
+		wfx_update_pm(wvif);
+	wvif = (struct wfx_vif *)vif->drv_priv;
+	wfx_upload_ap_templates(wvif);
+	ret = wfx_hif_start(wvif, &vif->bss_conf, wvif->channel);
+	if (ret > 0)
+		return -EIO;
+	wfx_set_mfp_ap(wvif);
+	return ret;
+}
+
+void wfx_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+		 struct ieee80211_bss_conf *link_conf)
+{
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+
+	wfx_reset(wvif);
+}
+
+static void wfx_join(struct wfx_vif *wvif)
+{
+	struct ieee80211_vif *vif = wvif_to_vif(wvif);
+	struct ieee80211_bss_conf *conf = &vif->bss_conf;
+	struct cfg80211_bss *bss = NULL;
+	u8 ssid[IEEE80211_MAX_SSID_LEN];
+	const u8 *ssid_ie = NULL;
+	int ssid_len = 0;
+	int ret;
+
+	wfx_tx_lock_flush(wvif->wdev);
+
+	bss = cfg80211_get_bss(wvif->wdev->hw->wiphy, wvif->channel, conf->bssid, NULL, 0,
+			       IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
+	if (!bss && !vif->cfg.ibss_joined) {
+		wfx_tx_unlock(wvif->wdev);
+		return;
+	}
+
+	rcu_read_lock(); /* protect ssid_ie */
+	if (bss)
+		ssid_ie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
+	if (ssid_ie) {
+		ssid_len = ssid_ie[1];
+		if (ssid_len > IEEE80211_MAX_SSID_LEN)
+			ssid_len = IEEE80211_MAX_SSID_LEN;
+		memcpy(ssid, &ssid_ie[2], ssid_len);
+	}
+	rcu_read_unlock();
+
+	cfg80211_put_bss(wvif->wdev->hw->wiphy, bss);
+
+	wvif->join_in_progress = true;
+	ret = wfx_hif_join(wvif, conf, wvif->channel, ssid, ssid_len);
+	if (ret) {
+		ieee80211_connection_loss(vif);
+		wfx_reset(wvif);
+	} else {
+		/* Due to beacon filtering it is possible that the AP's beacon is not known for the
+		 * mac80211 stack.  Disable filtering temporary to make sure the stack receives at
+		 * least one
+		 */
+		wfx_filter_beacon(wvif, false);
+	}
+	wfx_tx_unlock(wvif->wdev);
+}
+
+static void wfx_join_finalize(struct wfx_vif *wvif, struct ieee80211_bss_conf *info)
+{
+	struct ieee80211_vif *vif = wvif_to_vif(wvif);
+	struct ieee80211_sta *sta = NULL;
+	int ampdu_density = 0;
+	bool greenfield = false;
+
+	rcu_read_lock(); /* protect sta */
+	if (info->bssid && !vif->cfg.ibss_joined)
+		sta = ieee80211_find_sta(vif, info->bssid);
+	if (sta && sta->deflink.ht_cap.ht_supported)
+		ampdu_density = sta->deflink.ht_cap.ampdu_density;
+	if (sta && sta->deflink.ht_cap.ht_supported &&
+	    !(info->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT))
+		greenfield = !!(sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD);
+	rcu_read_unlock();
+
+	wvif->join_in_progress = false;
+	wfx_hif_set_association_mode(wvif, ampdu_density, greenfield, info->use_short_preamble);
+	wfx_hif_keep_alive_period(wvif, 0);
+	/* beacon_loss_count is defined to 7 in net/mac80211/mlme.c. Let's use the same value. */
+	wfx_hif_set_bss_params(wvif, vif->cfg.aid, 7);
+	wfx_hif_set_beacon_wakeup_period(wvif, 1, 1);
+	wfx_update_pm(wvif);
+}
+
+int wfx_join_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+
+	wfx_upload_ap_templates(wvif);
+	wfx_join(wvif);
+	return 0;
+}
+
+void wfx_leave_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+
+	wfx_reset(wvif);
+}
+
+static void wfx_enable_beacon(struct wfx_vif *wvif, bool enable)
+{
+	/* Driver has Content After DTIM Beacon in queue. Driver is waiting for a signal from the
+	 * firmware. Since we are going to stop to send beacons, this signal will never happens. See
+	 * also wfx_suspend_resume_mc()
+	 */
+	if (!enable && wfx_tx_queues_has_cab(wvif)) {
+		wvif->after_dtim_tx_allowed = true;
+		wfx_bh_request_tx(wvif->wdev);
+	}
+	wfx_hif_beacon_transmit(wvif, enable);
+}
+
+void wfx_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+			  struct ieee80211_bss_conf *info, u64 changed)
+{
+	struct wfx_dev *wdev = hw->priv;
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+	int i;
+
+	mutex_lock(&wdev->conf_mutex);
+
+	if (changed & BSS_CHANGED_BASIC_RATES ||
+	    changed & BSS_CHANGED_BEACON_INT ||
+	    changed & BSS_CHANGED_BSSID) {
+		if (vif->type == NL80211_IFTYPE_STATION)
+			wfx_join(wvif);
+	}
+
+	if (changed & BSS_CHANGED_ASSOC) {
+		if (vif->cfg.assoc || vif->cfg.ibss_joined)
+			wfx_join_finalize(wvif, info);
+		else if (!vif->cfg.assoc && vif->type == NL80211_IFTYPE_STATION)
+			wfx_reset(wvif);
+		else
+			dev_warn(wdev->dev, "misunderstood change: ASSOC\n");
+	}
+
+	if (changed & BSS_CHANGED_BEACON_INFO) {
+		if (vif->type != NL80211_IFTYPE_STATION)
+			dev_warn(wdev->dev, "misunderstood change: BEACON_INFO\n");
+		wfx_hif_set_beacon_wakeup_period(wvif, info->dtim_period, info->dtim_period);
+		/* We temporary forwarded beacon for join process. It is now no more necessary. */
+		wfx_filter_beacon(wvif, true);
+	}
+
+	if (changed & BSS_CHANGED_ARP_FILTER) {
+		for (i = 0; i < HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES; i++) {
+			__be32 *arp_addr = &vif->cfg.arp_addr_list[i];
+
+			if (vif->cfg.arp_addr_cnt > HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES)
+				arp_addr = NULL;
+			if (i >= vif->cfg.arp_addr_cnt)
+				arp_addr = NULL;
+			wfx_hif_set_arp_ipv4_filter(wvif, i, arp_addr);
+		}
+	}
+
+	if (changed & BSS_CHANGED_AP_PROBE_RESP || changed & BSS_CHANGED_BEACON)
+		wfx_upload_ap_templates(wvif);
+
+	if (changed & BSS_CHANGED_BEACON_ENABLED)
+		wfx_enable_beacon(wvif, info->enable_beacon);
+
+	if (changed & BSS_CHANGED_KEEP_ALIVE)
+		wfx_hif_keep_alive_period(wvif,
+					  info->max_idle_period * USEC_PER_TU / USEC_PER_MSEC);
+
+	if (changed & BSS_CHANGED_ERP_CTS_PROT)
+		wfx_hif_erp_use_protection(wvif, info->use_cts_prot);
+
+	if (changed & BSS_CHANGED_ERP_SLOT)
+		wfx_hif_slot_time(wvif, info->use_short_slot ? 9 : 20);
+
+	if (changed & BSS_CHANGED_CQM)
+		wfx_hif_set_rcpi_rssi_threshold(wvif, info->cqm_rssi_thold, info->cqm_rssi_hyst);
+
+	if (changed & BSS_CHANGED_TXPOWER)
+		wfx_hif_set_output_power(wvif, info->txpower);
+
+	if (changed & BSS_CHANGED_PS)
+		wfx_update_pm(wvif);
+
+	mutex_unlock(&wdev->conf_mutex);
+}
+
+static int wfx_update_tim(struct wfx_vif *wvif)
+{
+	struct ieee80211_vif *vif = wvif_to_vif(wvif);
+	struct sk_buff *skb;
+	u16 tim_offset, tim_length;
+	u8 *tim_ptr;
+
+	skb = ieee80211_beacon_get_tim(wvif->wdev->hw, vif, &tim_offset,
+				       &tim_length, 0);
+	if (!skb)
+		return -ENOENT;
+	tim_ptr = skb->data + tim_offset;
+
+	if (tim_offset && tim_length >= 6) {
+		/* Firmware handles DTIM counter internally */
+		tim_ptr[2] = 0;
+
+		/* Set/reset aid0 bit */
+		if (wfx_tx_queues_has_cab(wvif))
+			tim_ptr[4] |= 1;
+		else
+			tim_ptr[4] &= ~1;
+	}
+
+	wfx_hif_update_ie_beacon(wvif, tim_ptr, tim_length);
+	dev_kfree_skb(skb);
+
+	return 0;
+}
+
+static void wfx_update_tim_work(struct work_struct *work)
+{
+	struct wfx_vif *wvif = container_of(work, struct wfx_vif, update_tim_work);
+
+	wfx_update_tim(wvif);
+}
+
+int wfx_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set)
+{
+	struct wfx_dev *wdev = hw->priv;
+	struct wfx_sta_priv *sta_dev = (struct wfx_sta_priv *)&sta->drv_priv;
+	struct wfx_vif *wvif = wdev_to_wvif(wdev, sta_dev->vif_id);
+
+	if (!wvif) {
+		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
+		return -EIO;
+	}
+	schedule_work(&wvif->update_tim_work);
+	return 0;
+}
+
+void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd notify_cmd)
+{
+	struct wfx_vif *wvif_it;
+
+	if (notify_cmd != STA_NOTIFY_AWAKE)
+		return;
+
+	/* Device won't be able to honor CAB if a scan is in progress on any interface. Prefer to
+	 * skip this DTIM and wait for the next one.
+	 */
+	wvif_it = NULL;
+	while ((wvif_it = wvif_iterate(wvif->wdev, wvif_it)) != NULL)
+		if (mutex_is_locked(&wvif_it->scan_lock))
+			return;
+
+	if (!wfx_tx_queues_has_cab(wvif) || wvif->after_dtim_tx_allowed)
+		dev_warn(wvif->wdev->dev, "incorrect sequence (%d CAB in queue)",
+			 wfx_tx_queues_has_cab(wvif));
+	wvif->after_dtim_tx_allowed = true;
+	wfx_bh_request_tx(wvif->wdev);
+}
+
+int wfx_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+		     struct ieee80211_ampdu_params *params)
+{
+	/* Aggregation is implemented fully in firmware */
+	switch (params->action) {
+	case IEEE80211_AMPDU_RX_START:
+	case IEEE80211_AMPDU_RX_STOP:
+		/* Just acknowledge it to enable frame re-ordering */
+		return 0;
+	default:
+		/* Leave the firmware doing its business for tx aggregation */
+		return -EOPNOTSUPP;
+	}
+}
+
+int wfx_add_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf)
+{
+	return 0;
+}
+
+void wfx_remove_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf)
+{
+}
+
+void wfx_change_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf, u32 changed)
+{
+}
+
+int wfx_assign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+			   struct ieee80211_bss_conf *link_conf,
+			   struct ieee80211_chanctx_conf *conf)
+{
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+	struct ieee80211_channel *ch = conf->def.chan;
+
+	WARN(wvif->channel, "channel overwrite");
+	wvif->channel = ch;
+
+	return 0;
+}
+
+void wfx_unassign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+			      struct ieee80211_bss_conf *link_conf,
+			      struct ieee80211_chanctx_conf *conf)
+{
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+	struct ieee80211_channel *ch = conf->def.chan;
+
+	WARN(wvif->channel != ch, "channel mismatch");
+	wvif->channel = NULL;
+}
+
+int wfx_config(struct ieee80211_hw *hw, u32 changed)
+{
+	return 0;
+}
+
+int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+	int i;
+	struct wfx_dev *wdev = hw->priv;
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+
+	vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
+			     IEEE80211_VIF_SUPPORTS_UAPSD |
+			     IEEE80211_VIF_SUPPORTS_CQM_RSSI;
+
+	mutex_lock(&wdev->conf_mutex);
+
+	switch (vif->type) {
+	case NL80211_IFTYPE_STATION:
+	case NL80211_IFTYPE_ADHOC:
+	case NL80211_IFTYPE_AP:
+		break;
+	default:
+		mutex_unlock(&wdev->conf_mutex);
+		return -EOPNOTSUPP;
+	}
+
+	wvif->wdev = wdev;
+
+	wvif->link_id_map = 1; /* link-id 0 is reserved for multicast */
+	INIT_WORK(&wvif->update_tim_work, wfx_update_tim_work);
+	INIT_DELAYED_WORK(&wvif->beacon_loss_work, wfx_beacon_loss_work);
+
+	init_completion(&wvif->set_pm_mode_complete);
+	complete(&wvif->set_pm_mode_complete);
+	INIT_WORK(&wvif->tx_policy_upload_work, wfx_tx_policy_upload_work);
+
+	mutex_init(&wvif->scan_lock);
+	init_completion(&wvif->scan_complete);
+	INIT_WORK(&wvif->scan_work, wfx_hw_scan_work);
+
+	wfx_tx_queues_init(wvif);
+	wfx_tx_policy_init(wvif);
+
+	for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
+		if (!wdev->vif[i]) {
+			wdev->vif[i] = vif;
+			wvif->id = i;
+			break;
+		}
+	}
+	WARN(i == ARRAY_SIZE(wdev->vif), "try to instantiate more vif than supported");
+
+	wfx_hif_set_macaddr(wvif, vif->addr);
+
+	mutex_unlock(&wdev->conf_mutex);
+
+	wvif = NULL;
+	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
+		/* Combo mode does not support Block Acks. We can re-enable them */
+		if (wvif_count(wdev) == 1)
+			wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
+		else
+			wfx_hif_set_block_ack_policy(wvif, 0x00, 0x00);
+	}
+	return 0;
+}
+
+void wfx_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+	struct wfx_dev *wdev = hw->priv;
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+
+	wait_for_completion_timeout(&wvif->set_pm_mode_complete, msecs_to_jiffies(300));
+	wfx_tx_queues_check_empty(wvif);
+
+	mutex_lock(&wdev->conf_mutex);
+	WARN(wvif->link_id_map != 1, "corrupted state");
+
+	wfx_hif_reset(wvif, false);
+	wfx_hif_set_macaddr(wvif, NULL);
+	wfx_tx_policy_init(wvif);
+
+	cancel_delayed_work_sync(&wvif->beacon_loss_work);
+	wdev->vif[wvif->id] = NULL;
+
+	mutex_unlock(&wdev->conf_mutex);
+
+	wvif = NULL;
+	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
+		/* Combo mode does not support Block Acks. We can re-enable them */
+		if (wvif_count(wdev) == 1)
+			wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
+		else
+			wfx_hif_set_block_ack_policy(wvif, 0x00, 0x00);
+	}
+}
+
+int wfx_start(struct ieee80211_hw *hw)
+{
+	return 0;
+}
+
+void wfx_stop(struct ieee80211_hw *hw)
+{
+	struct wfx_dev *wdev = hw->priv;
+
+	WARN_ON(!skb_queue_empty_lockless(&wdev->tx_pending));
+}