Merge tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Support usec resolution of TCP timestamps, enabled selectively by a
     route attribute.

   - Defer regular TCP ACK while processing socket backlog, try to send
     a cumulative ACK at the end. Increase single TCP flow performance
     on a 200Gbit NIC by 20% (100Gbit -> 120Gbit).

   - The Fair Queuing (FQ) packet scheduler:
       - add built-in 3 band prio / WRR scheduling
       - support bypass if the qdisc is mostly idle (5% speed up for TCP RR)
       - improve inactive flow reporting
       - optimize the layout of structures for better cache locality

   - Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern
     replacement for the old MD5 option.

   - Add more retransmission timeout (RTO) related statistics to
     TCP_INFO.

   - Support sending fragmented skbs over vsock sockets.

   - Make sure we send SIGPIPE for vsock sockets if socket was
     shutdown().

   - Add sysctl for ignoring lower limit on lifetime in Router
     Advertisement PIO, based on an in-progress IETF draft.

   - Add sysctl to control activation of TCP ping-pong mode.

   - Add sysctl to make connection timeout in MPTCP configurable.

   - Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps
     limit the number of wakeups.

   - Support netlink GET for MDB (multicast forwarding), allowing user
     space to request a single MDB entry instead of dumping the entire
     table.

   - Support selective FDB flushing in the VXLAN tunnel driver.

   - Allow limiting learned FDB entries in bridges, prevent OOM attacks.

   - Allow controlling via configfs netconsole targets which were
     created via the kernel cmdline at boot, rather than via configfs at
     runtime.

   - Support multiple PTP timestamp event queue readers with different
     filters.

   - MCTP over I3C.

  BPF:

   - Add new veth-like netdevice where BPF program defines the logic of
     the xmit routine. It can operate in L3 and L2 mode.

   - Support exceptions - allow asserting conditions which should never
     be true but are hard for the verifier to infer. With some extra
     flexibility around handling of the exit / failure:

          https://lwn.net/Articles/938435/

   - Add support for local per-cpu kptr, allow allocating and storing
     per-cpu objects in maps. Access to those objects operates on the
     value for the current CPU.

     This allows to deprecate local one-off implementations of per-CPU
     storage like BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps.

   - Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is
     for systemd to re-implement the LogNamespace feature which allows
     running multiple instances of systemd-journald to process the logs
     of different services.

   - Enable open-coded task_vma iteration, after maple tree conversion
     made it hard to directly walk VMAs in tracing programs.

   - Add open-coded task, css_task and css iterator support. One of the
     use cases is customizable OOM victim selection via BPF.

   - Allow source address selection with bpf_*_fib_lookup().

   - Add ability to pin BPF timer to the current CPU.

   - Prevent creation of infinite loops by combining tail calls and
     fentry/fexit programs.

   - Add missed stats for kprobes to retrieve the number of missed
     kprobe executions and subsequent executions of BPF programs.

   - Inherit system settings for CPU security mitigations.

   - Add BPF v4 CPU instruction support for arm32 and s390x.

  Changes to common code:

   - overflow: add DEFINE_FLEX() for on-stack definition of structs with
     flexible array members.

   - Process doc update with more guidance for reviewers.

  Driver API:

   - Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy
     mutex in most places and remove a lot of smaller locks.

   - Create a common DPLL configuration API. Allow configuring and
     querying state of PLL circuits used for clock syntonization, in
     network time distribution.

   - Unify fragmented and full page allocation APIs in page pool code.
     Let drivers be ignorant of PAGE_SIZE.

   - Rework PHY state machine to avoid races with calls to phy_stop().

   - Notify DSA drivers of MAC address changes on user ports, improve
     correctness of offloads which depend on matching port MAC
     addresses.

   - Allow antenna control on injected WiFi frames.

   - Reduce the number of variants of napi_schedule().

   - Simplify error handling when composing devlink health messages.

  Misc:

   - A lot of KCSAN data race "fixes", from Eric.

   - A lot of __counted_by() annotations, from Kees.

   - A lot of strncpy -> strscpy and printf format fixes.

   - Replace master/slave terminology with conduit/user in DSA drivers.

   - Handful of KUnit tests for netdev and WiFi core.

  Removed:

   - AppleTalk COPS.

   - AppleTalk ipddp.

   - TI AR7 CPMAC Ethernet driver.

  Drivers:

   - Ethernet high-speed NICs:
      - Intel (100G, ice, idpf):
         - add a driver for the Intel E2000 IPUs
         - make CRC/FCS stripping configurable
         - cross-timestamping for E823 devices
         - basic support for E830 devices
         - use aux-bus for managing client drivers
         - i40e: report firmware versions via devlink
      - nVidia/Mellanox:
         - support 4-port NICs
         - increase max number of channels to 256
         - optimize / parallelize SF creation flow
      - Broadcom (bnxt):
         - enhance NIC temperature reporting
         - support PAM4 speeds and lane configuration
      - Marvell OcteonTX2:
         - PTP pulse-per-second output support
         - enable hardware timestamping for VFs
      - Solarflare/AMD:
         - conntrack NAT offload and offload for tunnels
      - Wangxun (ngbe/txgbe):
         - expose HW statistics
      - Pensando/AMD:
         - support PCI level reset
         - narrow down the condition under which skbs are linearized
      - Netronome/Corigine (nfp):
         - support CHACHA20-POLY1305 crypto in IPsec offload

   - Ethernet NICs embedded, slower, virtual:
      - Synopsys (stmmac):
         - add Loongson-1 SoC support
         - enable use of HW queues with no offload capabilities
         - enable PPS input support on all 5 channels
         - increase TX coalesce timer to 5ms
      - RealTek USB (r8152): improve efficiency of Rx by using GRO frags
      - xen: support SW packet timestamping
      - add drivers for implementations based on TI's PRUSS (AM64x EVM)

   - nVidia/Mellanox Ethernet datacenter switches:
      - avoid poor HW resource use on Spectrum-4 by better block
        selection for IPv6 multicast forwarding and ordering of blocks
        in ACL region

   - Ethernet embedded switches:
      - Microchip:
         - support configuring the drive strength for EMI compliance
         - ksz9477: partial ACL support
         - ksz9477: HSR offload
         - ksz9477: Wake on LAN
      - Realtek:
         - rtl8366rb: respect device tree config of the CPU port

   - Ethernet PHYs:
      - support Broadcom BCM5221 PHYs
      - TI dp83867: support hardware LED blinking

   - CAN:
      - add support for Linux-PHY based CAN transceivers
      - at91_can: clean up and use rx-offload helpers

   - WiFi:
      - MediaTek (mt76):
         - new sub-driver for mt7925 USB/PCIe devices
         - HW wireless <> Ethernet bridging in MT7988 chips
         - mt7603/mt7628 stability improvements
      - Qualcomm (ath12k):
         - WCN7850:
            - enable 320 MHz channels in 6 GHz band
            - hardware rfkill support
            - enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS to
              make scan faster
            - read board data variant name from SMBIOS
        - QCN9274: mesh support
      - RealTek (rtw89):
         - TDMA-based multi-channel concurrency (MCC)
      - Silicon Labs (wfx):
         - Remain-On-Channel (ROC) support

   - Bluetooth:
      - ISO: many improvements for broadcast support
      - mark BCM4378/BCM4387 as BROKEN_LE_CODED
      - add support for QCA2066
      - btmtksdio: enable Bluetooth wakeup from suspend"

* tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1816 commits)
  net: pcs: xpcs: Add 2500BASE-X case in get state for XPCS drivers
  net: bpf: Use sockopt_lock_sock() in ip_sock_set_tos()
  net: mana: Use xdp_set_features_flag instead of direct assignment
  vxlan: Cleanup IFLA_VXLAN_PORT_RANGE entry in vxlan_get_size()
  iavf: delete the iavf client interface
  iavf: add a common function for undoing the interrupt scheme
  iavf: use unregister_netdev
  iavf: rely on netdev's own registered state
  iavf: fix the waiting time for initial reset
  iavf: in iavf_down, don't queue watchdog_task if comms failed
  iavf: simplify mutex_trylock+sleep loops
  iavf: fix comments about old bit locks
  doc/netlink: Update schema to support cmd-cnt-name and cmd-max-name
  tools: ynl: introduce option to process unknown attributes or types
  ipvlan: properly track tx_errors
  netdevsim: Block until all devices are released
  nfp: using napi_build_skb() to replace build_skb()
  net: dsa: microchip: ksz9477: Fix spelling mistake "Enery" -> "Energy"
  net: dsa: microchip: Ensure Stable PME Pin State for Wake-on-LAN
  net: dsa: microchip: Refactor switch shutdown routine for WoL preparation
  ...

12 files changed, 247 insertions, 109 deletions

diff --git a/drivers/net/wireless/silabs/wfx/data_tx.c b/drivers/net/wireless/silabs/wfx/data_tx.c
index 6a5e52a96d18..a44a7403ce8d 100644
--- a/drivers/net/wireless/silabs/wfx/data_tx.c
+++ b/drivers/net/wireless/silabs/wfx/data_tx.c
@@ -208,6 +208,36 @@ static bool wfx_is_action_back(struct ieee80211_hdr *hdr)
 	return true;
 }
 
+struct wfx_tx_priv *wfx_skb_tx_priv(struct sk_buff *skb)
+{
+	struct ieee80211_tx_info *tx_info;
+
+	if (!skb)
+		return NULL;
+	tx_info = IEEE80211_SKB_CB(skb);
+	return (struct wfx_tx_priv *)tx_info->rate_driver_data;
+}
+
+struct wfx_hif_req_tx *wfx_skb_txreq(struct sk_buff *skb)
+{
+	struct wfx_hif_msg *hif = (struct wfx_hif_msg *)skb->data;
+	struct wfx_hif_req_tx *req = (struct wfx_hif_req_tx *)hif->body;
+
+	return req;
+}
+
+struct wfx_vif *wfx_skb_wvif(struct wfx_dev *wdev, struct sk_buff *skb)
+{
+	struct wfx_tx_priv *tx_priv = wfx_skb_tx_priv(skb);
+	struct wfx_hif_msg *hif = (struct wfx_hif_msg *)skb->data;
+
+	if (tx_priv->vif_id != hif->interface && hif->interface != 2) {
+		dev_err(wdev->dev, "corrupted skb");
+		return wdev_to_wvif(wdev, hif->interface);
+	}
+	return wdev_to_wvif(wdev, tx_priv->vif_id);
+}
+
 static u8 wfx_tx_get_link_id(struct wfx_vif *wvif, struct ieee80211_sta *sta,
 			     struct ieee80211_hdr *hdr)
 {
@@ -226,53 +256,40 @@ static u8 wfx_tx_get_link_id(struct wfx_vif *wvif, struct ieee80211_sta *sta,
 
 static void wfx_tx_fixup_rates(struct ieee80211_tx_rate *rates)
 {
-	int i;
-	bool finished;
+	bool has_rate0 = false;
+	int i, j;
 
-	/* Firmware is not able to mix rates with different flags */
-	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
-		if (rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
-			rates[i].flags |= IEEE80211_TX_RC_SHORT_GI;
-		if (!(rates[0].flags & IEEE80211_TX_RC_SHORT_GI))
+	for (i = 1, j = 1; j < IEEE80211_TX_MAX_RATES; j++) {
+		if (rates[j].idx == -1)
+			break;
+		/* The device use the rates in descending order, whatever the request from minstrel.
+		 * We have to trade off here. Most important is to respect the primary rate
+		 * requested by minstrel. So, we drops the entries with rate higher than the
+		 * previous.
+		 */
+		if (rates[j].idx >= rates[i - 1].idx) {
+			rates[i - 1].count += rates[j].count;
+			rates[i - 1].count = min_t(u16, 15, rates[i - 1].count);
+		} else {
+			memcpy(rates + i, rates + j, sizeof(rates[i]));
+			if (rates[i].idx == 0)
+				has_rate0 = true;
+			/* The device apply Short GI only on the first rate */
 			rates[i].flags &= ~IEEE80211_TX_RC_SHORT_GI;
-		if (!(rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS))
-			rates[i].flags &= ~IEEE80211_TX_RC_USE_RTS_CTS;
-	}
-
-	/* Sort rates and remove duplicates */
-	do {
-		finished = true;
-		for (i = 0; i < IEEE80211_TX_MAX_RATES - 1; i++) {
-			if (rates[i + 1].idx == rates[i].idx &&
-			    rates[i].idx != -1) {
-				rates[i].count += rates[i + 1].count;
-				if (rates[i].count > 15)
-					rates[i].count = 15;
-				rates[i + 1].idx = -1;
-				rates[i + 1].count = 0;
-
-				finished = false;
-			}
-			if (rates[i + 1].idx > rates[i].idx) {
-				swap(rates[i + 1], rates[i]);
-				finished = false;
-			}
+			i++;
 		}
-	} while (!finished);
+	}
 	/* Ensure that MCS0 or 1Mbps is present at the end of the retry list */
-	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
-		if (rates[i].idx == 0)
-			break;
-		if (rates[i].idx == -1) {
-			rates[i].idx = 0;
-			rates[i].count = 8; /* == hw->max_rate_tries */
-			rates[i].flags = rates[i - 1].flags & IEEE80211_TX_RC_MCS;
-			break;
-		}
+	if (!has_rate0 && i < IEEE80211_TX_MAX_RATES) {
+		rates[i].idx = 0;
+		rates[i].count = 8; /* == hw->max_rate_tries */
+		rates[i].flags = rates[0].flags & IEEE80211_TX_RC_MCS;
+		i++;
+	}
+	for (; i < IEEE80211_TX_MAX_RATES; i++) {
+		memset(rates + i, 0, sizeof(rates[i]));
+		rates[i].idx = -1;
 	}
-	/* All retries use long GI */
-	for (i = 1; i < IEEE80211_TX_MAX_RATES; i++)
-		rates[i].flags &= ~IEEE80211_TX_RC_SHORT_GI;
 }
 
 static u8 wfx_tx_get_retry_policy_id(struct wfx_vif *wvif, struct ieee80211_tx_info *tx_info)
@@ -334,6 +351,7 @@ static int wfx_tx_inner(struct wfx_vif *wvif, struct ieee80211_sta *sta, struct
 	/* Fill tx_priv */
 	tx_priv = (struct wfx_tx_priv *)tx_info->rate_driver_data;
 	tx_priv->icv_size = wfx_tx_get_icv_len(hw_key);
+	tx_priv->vif_id = wvif->id;
 
 	/* Fill hif_msg */
 	WARN(skb_headroom(skb) < wmsg_len, "not enough space in skb");
@@ -344,7 +362,10 @@ static int wfx_tx_inner(struct wfx_vif *wvif, struct ieee80211_sta *sta, struct
 	hif_msg = (struct wfx_hif_msg *)skb->data;
 	hif_msg->len = cpu_to_le16(skb->len);
 	hif_msg->id = HIF_REQ_ID_TX;
-	hif_msg->interface = wvif->id;
+	if (tx_info->flags & IEEE80211_TX_CTL_TX_OFFCHAN)
+		hif_msg->interface = 2;
+	else
+		hif_msg->interface = wvif->id;
 	if (skb->len > le16_to_cpu(wvif->wdev->hw_caps.size_inp_ch_buf)) {
 		dev_warn(wvif->wdev->dev,
 			 "requested frame size (%d) is larger than maximum supported (%d)\n",
@@ -365,9 +386,15 @@ static int wfx_tx_inner(struct wfx_vif *wvif, struct ieee80211_sta *sta, struct
 	req->fc_offset = offset;
 	/* Queue index are inverted between firmware and Linux */
 	req->queue_id = 3 - queue_id;
-	req->peer_sta_id = wfx_tx_get_link_id(wvif, sta, hdr);
-	req->retry_policy_index = wfx_tx_get_retry_policy_id(wvif, tx_info);
-	req->frame_format = wfx_tx_get_frame_format(tx_info);
+	if (tx_info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
+		req->peer_sta_id = HIF_LINK_ID_NOT_ASSOCIATED;
+		req->retry_policy_index = HIF_TX_RETRY_POLICY_INVALID;
+		req->frame_format = HIF_FRAME_FORMAT_NON_HT;
+	} else {
+		req->peer_sta_id = wfx_tx_get_link_id(wvif, sta, hdr);
+		req->retry_policy_index = wfx_tx_get_retry_policy_id(wvif, tx_info);
+		req->frame_format = wfx_tx_get_frame_format(tx_info);
+	}
 	if (tx_info->driver_rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 		req->short_gi = 1;
 	if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM)
@@ -483,7 +510,7 @@ void wfx_tx_confirm_cb(struct wfx_dev *wdev, const struct wfx_hif_cnf_tx *arg)
 	}
 	tx_info = IEEE80211_SKB_CB(skb);
 	tx_priv = wfx_skb_tx_priv(skb);
-	wvif = wdev_to_wvif(wdev, ((struct wfx_hif_msg *)skb->data)->interface);
+	wvif = wfx_skb_wvif(wdev, skb);
 	WARN_ON(!wvif);
 	if (!wvif)
 		return;
@@ -545,7 +572,6 @@ void wfx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u32 queues, b
 	struct wfx_dev *wdev = hw->priv;
 	struct sk_buff_head dropped;
 	struct wfx_vif *wvif;
-	struct wfx_hif_msg *hif;
 	struct sk_buff *skb;
 
 	skb_queue_head_init(&dropped);
@@ -561,8 +587,7 @@ void wfx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u32 queues, b
 	if (wdev->chip_frozen)
 		wfx_pending_drop(wdev, &dropped);
 	while ((skb = skb_dequeue(&dropped)) != NULL) {
-		hif = (struct wfx_hif_msg *)skb->data;
-		wvif = wdev_to_wvif(wdev, hif->interface);
+		wvif = wfx_skb_wvif(wdev, skb);
 		ieee80211_tx_info_clear_status(IEEE80211_SKB_CB(skb));
 		wfx_skb_dtor(wvif, skb);
 	}
diff --git a/drivers/net/wireless/silabs/wfx/data_tx.h b/drivers/net/wireless/silabs/wfx/data_tx.h
index 983470705e4b..0621b82103be 100644
--- a/drivers/net/wireless/silabs/wfx/data_tx.h
+++ b/drivers/net/wireless/silabs/wfx/data_tx.h
@@ -36,6 +36,7 @@ struct wfx_tx_policy_cache {
 struct wfx_tx_priv {
 	ktime_t xmit_timestamp;
 	unsigned char icv_size;
+	unsigned char vif_id;
 };
 
 void wfx_tx_policy_init(struct wfx_vif *wvif);
@@ -45,22 +46,8 @@ void wfx_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, struc
 void wfx_tx_confirm_cb(struct wfx_dev *wdev, const struct wfx_hif_cnf_tx *arg);
 void wfx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u32 queues, bool drop);
 
-static inline struct wfx_tx_priv *wfx_skb_tx_priv(struct sk_buff *skb)
-{
-	struct ieee80211_tx_info *tx_info;
-
-	if (!skb)
-		return NULL;
-	tx_info = IEEE80211_SKB_CB(skb);
-	return (struct wfx_tx_priv *)tx_info->rate_driver_data;
-}
-
-static inline struct wfx_hif_req_tx *wfx_skb_txreq(struct sk_buff *skb)
-{
-	struct wfx_hif_msg *hif = (struct wfx_hif_msg *)skb->data;
-	struct wfx_hif_req_tx *req = (struct wfx_hif_req_tx *)hif->body;
-
-	return req;
-}
+struct wfx_tx_priv *wfx_skb_tx_priv(struct sk_buff *skb);
+struct wfx_hif_req_tx *wfx_skb_txreq(struct sk_buff *skb);
+struct wfx_vif *wfx_skb_wvif(struct wfx_dev *wdev, struct sk_buff *skb);
 
 #endif
diff --git a/drivers/net/wireless/silabs/wfx/hif_tx.c b/drivers/net/wireless/silabs/wfx/hif_tx.c
index 9402503fbde3..9f403d275cb1 100644
--- a/drivers/net/wireless/silabs/wfx/hif_tx.c
+++ b/drivers/net/wireless/silabs/wfx/hif_tx.c
@@ -45,6 +45,24 @@ static void *wfx_alloc_hif(size_t body_len, struct wfx_hif_msg **hif)
 		return NULL;
 }
 
+static 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;
+}
+
 int wfx_cmd_send(struct wfx_dev *wdev, struct wfx_hif_msg *request,
 		 void *reply, size_t reply_len, bool no_reply)
 {
@@ -220,6 +238,31 @@ int wfx_hif_write_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id, void *val, s
 	return ret;
 }
 
+/* Hijack scan request to implement Remain-On-Channel */
+int wfx_hif_scan_uniq(struct wfx_vif *wvif, struct ieee80211_channel *chan, int duration)
+{
+	int ret;
+	struct wfx_hif_msg *hif;
+	size_t buf_len = sizeof(struct wfx_hif_req_start_scan_alt) + sizeof(u8);
+	struct wfx_hif_req_start_scan_alt *body = wfx_alloc_hif(buf_len, &hif);
+
+	if (!hif)
+		return -ENOMEM;
+	body->num_of_ssids = HIF_API_MAX_NB_SSIDS;
+	body->maintain_current_bss = 1;
+	body->disallow_ps = 1;
+	body->tx_power_level = cpu_to_le32(chan->max_power);
+	body->num_of_channels = 1;
+	body->channel_list[0] = chan->hw_value;
+	body->max_transmit_rate = API_RATE_INDEX_B_1MBPS;
+	body->min_channel_time = cpu_to_le32(duration);
+	body->max_channel_time = cpu_to_le32(duration * 110 / 100);
+	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_START_SCAN, buf_len);
+	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
 int wfx_hif_scan(struct wfx_vif *wvif, struct cfg80211_scan_request *req,
 		 int chan_start_idx, int chan_num)
 {
diff --git a/drivers/net/wireless/silabs/wfx/hif_tx.h b/drivers/net/wireless/silabs/wfx/hif_tx.h
index 71817a6571f0..aab54df6aafa 100644
--- a/drivers/net/wireless/silabs/wfx/hif_tx.h
+++ b/drivers/net/wireless/silabs/wfx/hif_tx.h
@@ -54,6 +54,7 @@ int wfx_hif_beacon_transmit(struct wfx_vif *wvif, bool enable);
 int wfx_hif_update_ie_beacon(struct wfx_vif *wvif, const u8 *ies, size_t ies_len);
 int wfx_hif_scan(struct wfx_vif *wvif, struct cfg80211_scan_request *req80211,
 		 int chan_start, int chan_num);
+int wfx_hif_scan_uniq(struct wfx_vif *wvif, struct ieee80211_channel *chan, int duration);
 int wfx_hif_stop_scan(struct wfx_vif *wvif);
 int wfx_hif_configuration(struct wfx_dev *wdev, const u8 *conf, size_t len);
 int wfx_hif_shutdown(struct wfx_dev *wdev);
diff --git a/drivers/net/wireless/silabs/wfx/main.c b/drivers/net/wireless/silabs/wfx/main.c
index ede822d771aa..e7198520bdff 100644
--- a/drivers/net/wireless/silabs/wfx/main.c
+++ b/drivers/net/wireless/silabs/wfx/main.c
@@ -151,6 +151,8 @@ static const struct ieee80211_ops wfx_ops = {
 	.change_chanctx          = wfx_change_chanctx,
 	.assign_vif_chanctx      = wfx_assign_vif_chanctx,
 	.unassign_vif_chanctx    = wfx_unassign_vif_chanctx,
+	.remain_on_channel       = wfx_remain_on_channel,
+	.cancel_remain_on_channel = wfx_cancel_remain_on_channel,
 };
 
 bool wfx_api_older_than(struct wfx_dev *wdev, int major, int minor)
@@ -246,6 +248,7 @@ static void wfx_free_common(void *data)
 
 	mutex_destroy(&wdev->tx_power_loop_info_lock);
 	mutex_destroy(&wdev->rx_stats_lock);
+	mutex_destroy(&wdev->scan_lock);
 	mutex_destroy(&wdev->conf_mutex);
 	ieee80211_free_hw(wdev->hw);
 }
@@ -288,6 +291,7 @@ struct wfx_dev *wfx_init_common(struct device *dev, const struct wfx_platform_da
 	hw->wiphy->features |= NL80211_FEATURE_AP_SCAN;
 	hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
 	hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
+	hw->wiphy->max_remain_on_channel_duration = 5000;
 	hw->wiphy->max_ap_assoc_sta = HIF_LINK_ID_MAX;
 	hw->wiphy->max_scan_ssids = 2;
 	hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
@@ -314,6 +318,7 @@ struct wfx_dev *wfx_init_common(struct device *dev, const struct wfx_platform_da
 		gpiod_set_consumer_name(wdev->pdata.gpio_wakeup, "wfx wakeup");
 
 	mutex_init(&wdev->conf_mutex);
+	mutex_init(&wdev->scan_lock);
 	mutex_init(&wdev->rx_stats_lock);
 	mutex_init(&wdev->tx_power_loop_info_lock);
 	init_completion(&wdev->firmware_ready);
diff --git a/drivers/net/wireless/silabs/wfx/queue.c b/drivers/net/wireless/silabs/wfx/queue.c
index 37f492e5d3be..e61b86f211e5 100644
--- a/drivers/net/wireless/silabs/wfx/queue.c
+++ b/drivers/net/wireless/silabs/wfx/queue.c
@@ -68,13 +68,16 @@ void wfx_tx_queues_init(struct wfx_vif *wvif)
 	for (i = 0; i < IEEE80211_NUM_ACS; ++i) {
 		skb_queue_head_init(&wvif->tx_queue[i].normal);
 		skb_queue_head_init(&wvif->tx_queue[i].cab);
+		skb_queue_head_init(&wvif->tx_queue[i].offchan);
 		wvif->tx_queue[i].priority = priorities[i];
 	}
 }
 
 bool wfx_tx_queue_empty(struct wfx_vif *wvif, struct wfx_queue *queue)
 {
-	return skb_queue_empty_lockless(&queue->normal) && skb_queue_empty_lockless(&queue->cab);
+	return skb_queue_empty_lockless(&queue->normal) &&
+	       skb_queue_empty_lockless(&queue->cab) &&
+	       skb_queue_empty_lockless(&queue->offchan);
 }
 
 void wfx_tx_queues_check_empty(struct wfx_vif *wvif)
@@ -103,8 +106,9 @@ static void __wfx_tx_queue_drop(struct wfx_vif *wvif,
 void wfx_tx_queue_drop(struct wfx_vif *wvif, struct wfx_queue *queue,
 		       struct sk_buff_head *dropped)
 {
-	__wfx_tx_queue_drop(wvif, &queue->cab, dropped);
 	__wfx_tx_queue_drop(wvif, &queue->normal, dropped);
+	__wfx_tx_queue_drop(wvif, &queue->cab, dropped);
+	__wfx_tx_queue_drop(wvif, &queue->offchan, dropped);
 	wake_up(&wvif->wdev->tx_dequeue);
 }
 
@@ -113,7 +117,9 @@ void wfx_tx_queues_put(struct wfx_vif *wvif, struct sk_buff *skb)
 	struct wfx_queue *queue = &wvif->tx_queue[skb_get_queue_mapping(skb)];
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 
-	if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM)
+	if (tx_info->flags & IEEE80211_TX_CTL_TX_OFFCHAN)
+		skb_queue_tail(&queue->offchan, skb);
+	else if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM)
 		skb_queue_tail(&queue->cab, skb);
 	else
 		skb_queue_tail(&queue->normal, skb);
@@ -123,13 +129,11 @@ void wfx_pending_drop(struct wfx_dev *wdev, struct sk_buff_head *dropped)
 {
 	struct wfx_queue *queue;
 	struct wfx_vif *wvif;
-	struct wfx_hif_msg *hif;
 	struct sk_buff *skb;
 
 	WARN(!wdev->chip_frozen, "%s should only be used to recover a frozen device", __func__);
 	while ((skb = skb_dequeue(&wdev->tx_pending)) != NULL) {
-		hif = (struct wfx_hif_msg *)skb->data;
-		wvif = wdev_to_wvif(wdev, hif->interface);
+		wvif = wfx_skb_wvif(wdev, skb);
 		if (wvif) {
 			queue = &wvif->tx_queue[skb_get_queue_mapping(skb)];
 			WARN_ON(skb_get_queue_mapping(skb) > 3);
@@ -155,7 +159,7 @@ struct sk_buff *wfx_pending_get(struct wfx_dev *wdev, u32 packet_id)
 		if (req->packet_id != packet_id)
 			continue;
 		spin_unlock_bh(&wdev->tx_pending.lock);
-		wvif = wdev_to_wvif(wdev, hif->interface);
+		wvif = wfx_skb_wvif(wdev, skb);
 		if (wvif) {
 			queue = &wvif->tx_queue[skb_get_queue_mapping(skb)];
 			WARN_ON(skb_get_queue_mapping(skb) > 3);
@@ -248,6 +252,26 @@ static struct sk_buff *wfx_tx_queues_get_skb(struct wfx_dev *wdev)
 
 	wvif = NULL;
 	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
+		for (i = 0; i < num_queues; i++) {
+			skb = skb_dequeue(&queues[i]->offchan);
+			if (!skb)
+				continue;
+			hif = (struct wfx_hif_msg *)skb->data;
+			/* Offchan frames are assigned to a special interface.
+			 * The only interface allowed to send data during scan.
+			 */
+			WARN_ON(hif->interface != 2);
+			atomic_inc(&queues[i]->pending_frames);
+			trace_queues_stats(wdev, queues[i]);
+			return skb;
+		}
+	}
+
+	if (mutex_is_locked(&wdev->scan_lock))
+		return NULL;
+
+	wvif = NULL;
+	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
 		if (!wvif->after_dtim_tx_allowed)
 			continue;
 		for (i = 0; i < num_queues; i++) {
diff --git a/drivers/net/wireless/silabs/wfx/queue.h b/drivers/net/wireless/silabs/wfx/queue.h
index 4731debca93d..6857fbd60fba 100644
--- a/drivers/net/wireless/silabs/wfx/queue.h
+++ b/drivers/net/wireless/silabs/wfx/queue.h
@@ -17,6 +17,7 @@ struct wfx_vif;
 struct wfx_queue {
 	struct sk_buff_head normal;
 	struct sk_buff_head cab; /* Content After (DTIM) Beacon */
+	struct sk_buff_head offchan;
 	atomic_t            pending_frames;
 	int                 priority;
 };
diff --git a/drivers/net/wireless/silabs/wfx/scan.c b/drivers/net/wireless/silabs/wfx/scan.c
index 16f619ed22e0..c3c103ff88cc 100644
--- a/drivers/net/wireless/silabs/wfx/scan.c
+++ b/drivers/net/wireless/silabs/wfx/scan.c
@@ -95,7 +95,7 @@ void wfx_hw_scan_work(struct work_struct *work)
 	int chan_cur, ret, err;
 
 	mutex_lock(&wvif->wdev->conf_mutex);
-	mutex_lock(&wvif->scan_lock);
+	mutex_lock(&wvif->wdev->scan_lock);
 	if (wvif->join_in_progress) {
 		dev_info(wvif->wdev->dev, "abort in-progress REQ_JOIN");
 		wfx_reset(wvif);
@@ -116,7 +116,7 @@ void wfx_hw_scan_work(struct work_struct *work)
 			ret = -ETIMEDOUT;
 		}
 	} while (ret >= 0 && chan_cur < hw_req->req.n_channels);
-	mutex_unlock(&wvif->scan_lock);
+	mutex_unlock(&wvif->wdev->scan_lock);
 	mutex_unlock(&wvif->wdev->conf_mutex);
 	wfx_ieee80211_scan_completed_compat(wvif->wdev->hw, ret < 0);
 }
@@ -145,3 +145,65 @@ void wfx_scan_complete(struct wfx_vif *wvif, int nb_chan_done)
 	wvif->scan_nb_chan_done = nb_chan_done;
 	complete(&wvif->scan_complete);
 }
+
+void wfx_remain_on_channel_work(struct work_struct *work)
+{
+	struct wfx_vif *wvif = container_of(work, struct wfx_vif, remain_on_channel_work);
+	struct ieee80211_channel *chan = wvif->remain_on_channel_chan;
+	int duration = wvif->remain_on_channel_duration;
+	int ret;
+
+	/* Hijack scan request to implement Remain-On-Channel */
+	mutex_lock(&wvif->wdev->conf_mutex);
+	mutex_lock(&wvif->wdev->scan_lock);
+	if (wvif->join_in_progress) {
+		dev_info(wvif->wdev->dev, "abort in-progress REQ_JOIN");
+		wfx_reset(wvif);
+	}
+	wfx_tx_flush(wvif->wdev);
+
+	reinit_completion(&wvif->scan_complete);
+	ret = wfx_hif_scan_uniq(wvif, chan, duration);
+	if (ret)
+		goto end;
+	ieee80211_ready_on_channel(wvif->wdev->hw);
+	ret = wait_for_completion_timeout(&wvif->scan_complete,
+					  msecs_to_jiffies(duration * 120 / 100));
+	if (!ret) {
+		wfx_hif_stop_scan(wvif);
+		ret = wait_for_completion_timeout(&wvif->scan_complete, 1 * HZ);
+		dev_dbg(wvif->wdev->dev, "roc timeout\n");
+	}
+	if (!ret)
+		dev_err(wvif->wdev->dev, "roc didn't stop\n");
+	ieee80211_remain_on_channel_expired(wvif->wdev->hw);
+end:
+	mutex_unlock(&wvif->wdev->scan_lock);
+	mutex_unlock(&wvif->wdev->conf_mutex);
+	wfx_bh_request_tx(wvif->wdev);
+}
+
+int wfx_remain_on_channel(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+			  struct ieee80211_channel *chan, int duration,
+			  enum ieee80211_roc_type type)
+{
+	struct wfx_dev *wdev = hw->priv;
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+
+	if (wfx_api_older_than(wdev, 3, 10))
+		return -EOPNOTSUPP;
+
+	wvif->remain_on_channel_duration = duration;
+	wvif->remain_on_channel_chan = chan;
+	schedule_work(&wvif->remain_on_channel_work);
+	return 0;
+}
+
+int wfx_cancel_remain_on_channel(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+
+	wfx_hif_stop_scan(wvif);
+	flush_work(&wvif->remain_on_channel_work);
+	return 0;
+}
diff --git a/drivers/net/wireless/silabs/wfx/scan.h b/drivers/net/wireless/silabs/wfx/scan.h
index 78e3b984f375..995ab8c6cb5e 100644
--- a/drivers/net/wireless/silabs/wfx/scan.h
+++ b/drivers/net/wireless/silabs/wfx/scan.h
@@ -19,4 +19,10 @@ int wfx_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 void wfx_cancel_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
 void wfx_scan_complete(struct wfx_vif *wvif, int nb_chan_done);
 
+void wfx_remain_on_channel_work(struct work_struct *work);
+int wfx_remain_on_channel(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+			  struct ieee80211_channel *chan, int duration,
+			  enum ieee80211_roc_type type);
+int wfx_cancel_remain_on_channel(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
+
 #endif
diff --git a/drivers/net/wireless/silabs/wfx/sta.c b/drivers/net/wireless/silabs/wfx/sta.c
index 626dfb4b7a55..1b6c158457b4 100644
--- a/drivers/net/wireless/silabs/wfx/sta.c
+++ b/drivers/net/wireless/silabs/wfx/sta.c
@@ -20,24 +20,6 @@
 
 #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,
@@ -114,10 +96,12 @@ void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
 	*total_flags &= FIF_BCN_PRBRESP_PROMISC | FIF_ALLMULTI | FIF_OTHER_BSS |
 			FIF_PROBE_REQ | FIF_PSPOLL;
 
+	/* Filters are ignored during the scan. No frames are filtered. */
+	if (mutex_is_locked(&wdev->scan_lock))
+		return;
+
 	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
 		 */
@@ -144,8 +128,6 @@ void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
 		else
 			filter_prbreq = true;
 		wfx_hif_set_rx_filter(wvif, filter_bssid, filter_prbreq);
-
-		mutex_unlock(&wvif->scan_lock);
 	}
 	mutex_unlock(&wdev->conf_mutex);
 }
@@ -402,7 +384,12 @@ 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;
+	struct wfx_dev *wdev = wvif->wdev;
 
+	wvif =  NULL;
+	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
+		wfx_update_pm(wvif);
+	wvif = (struct wfx_vif *)vif->drv_priv;
 	wfx_reset(wvif);
 }
 
@@ -634,18 +621,14 @@ int wfx_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set)
 
 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 (mutex_is_locked(&wvif->wdev->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)",
@@ -743,9 +726,9 @@ int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 	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);
+	INIT_WORK(&wvif->remain_on_channel_work, wfx_remain_on_channel_work);
 
 	wfx_tx_queues_init(wvif);
 	wfx_tx_policy_init(wvif);
diff --git a/drivers/net/wireless/silabs/wfx/sta.h b/drivers/net/wireless/silabs/wfx/sta.h
index 888db5cd3206..c478ddcb934b 100644
--- a/drivers/net/wireless/silabs/wfx/sta.h
+++ b/drivers/net/wireless/silabs/wfx/sta.h
@@ -66,6 +66,5 @@ int wfx_update_pm(struct wfx_vif *wvif);
 
 /* Other Helpers */
 void wfx_reset(struct wfx_vif *wvif);
-u32 wfx_rate_mask_to_hw(struct wfx_dev *wdev, u32 rates);
 
 #endif
diff --git a/drivers/net/wireless/silabs/wfx/wfx.h b/drivers/net/wireless/silabs/wfx/wfx.h
index 13ba84b3b2c3..bd0df2e1ea99 100644
--- a/drivers/net/wireless/silabs/wfx/wfx.h
+++ b/drivers/net/wireless/silabs/wfx/wfx.h
@@ -43,6 +43,7 @@ struct wfx_dev {
 	struct delayed_work        cooling_timeout_work;
 	bool                       poll_irq;
 	bool                       chip_frozen;
+	struct mutex               scan_lock;
 	struct mutex               conf_mutex;
 
 	struct wfx_hif_cmd         hif_cmd;
@@ -69,6 +70,7 @@ struct wfx_vif {
 
 	bool                       after_dtim_tx_allowed;
 	bool                       join_in_progress;
+	struct completion          set_pm_mode_complete;
 
 	struct delayed_work        beacon_loss_work;
 
@@ -80,15 +82,15 @@ struct wfx_vif {
 
 	unsigned long              uapsd_mask;
 
-	/* avoid some operations in parallel with scan */
-	struct mutex               scan_lock;
 	struct work_struct         scan_work;
 	struct completion          scan_complete;
 	int                        scan_nb_chan_done;
 	bool                       scan_abort;
 	struct ieee80211_scan_request *scan_req;
 
-	struct completion          set_pm_mode_complete;
+	struct ieee80211_channel   *remain_on_channel_chan;
+	int                        remain_on_channel_duration;
+	struct work_struct         remain_on_channel_work;
 };
 
 static inline struct ieee80211_vif *wvif_to_vif(struct wfx_vif *wvif)