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, 391 insertions, 0 deletions

diff --git a/drivers/net/wireless/silabs/wfx/hif_rx.c b/drivers/net/wireless/silabs/wfx/hif_rx.c
new file mode 100644
index 000000000..64ca8acb8
--- /dev/null
+++ b/drivers/net/wireless/silabs/wfx/hif_rx.c
@@ -0,0 +1,391 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Handling of the chip-to-host events (aka indications) of the hardware API.
+ *
+ * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
+ * Copyright (c) 2010, ST-Ericsson
+ */
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+
+#include "hif_rx.h"
+#include "wfx.h"
+#include "scan.h"
+#include "bh.h"
+#include "sta.h"
+#include "data_rx.h"
+#include "hif_api_cmd.h"
+
+static int wfx_hif_generic_confirm(struct wfx_dev *wdev,
+				   const struct wfx_hif_msg *hif, const void *buf)
+{
+	/* All confirm messages start with status */
+	int status = le32_to_cpup((__le32 *)buf);
+	int cmd = hif->id;
+	int len = le16_to_cpu(hif->len) - 4; /* drop header */
+
+	WARN(!mutex_is_locked(&wdev->hif_cmd.lock), "data locking error");
+
+	if (!wdev->hif_cmd.buf_send) {
+		dev_warn(wdev->dev, "unexpected confirmation: 0x%.2x\n", cmd);
+		return -EINVAL;
+	}
+
+	if (cmd != wdev->hif_cmd.buf_send->id) {
+		dev_warn(wdev->dev, "chip response mismatch request: 0x%.2x vs 0x%.2x\n",
+			 cmd, wdev->hif_cmd.buf_send->id);
+		return -EINVAL;
+	}
+
+	if (wdev->hif_cmd.buf_recv) {
+		if (wdev->hif_cmd.len_recv >= len && len > 0)
+			memcpy(wdev->hif_cmd.buf_recv, buf, len);
+		else
+			status = -EIO;
+	}
+	wdev->hif_cmd.ret = status;
+
+	complete(&wdev->hif_cmd.done);
+	return status;
+}
+
+static int wfx_hif_tx_confirm(struct wfx_dev *wdev,
+			      const struct wfx_hif_msg *hif, const void *buf)
+{
+	const struct wfx_hif_cnf_tx *body = buf;
+
+	wfx_tx_confirm_cb(wdev, body);
+	return 0;
+}
+
+static int wfx_hif_multi_tx_confirm(struct wfx_dev *wdev,
+				    const struct wfx_hif_msg *hif, const void *buf)
+{
+	const struct wfx_hif_cnf_multi_transmit *body = buf;
+	int i;
+
+	WARN(body->num_tx_confs <= 0, "corrupted message");
+	for (i = 0; i < body->num_tx_confs; i++)
+		wfx_tx_confirm_cb(wdev, &body->tx_conf_payload[i]);
+	return 0;
+}
+
+static int wfx_hif_startup_indication(struct wfx_dev *wdev,
+				      const struct wfx_hif_msg *hif, const void *buf)
+{
+	const struct wfx_hif_ind_startup *body = buf;
+
+	if (body->status || body->firmware_type > 4) {
+		dev_err(wdev->dev, "received invalid startup indication");
+		return -EINVAL;
+	}
+	memcpy(&wdev->hw_caps, body, sizeof(struct wfx_hif_ind_startup));
+	complete(&wdev->firmware_ready);
+	return 0;
+}
+
+static int wfx_hif_wakeup_indication(struct wfx_dev *wdev,
+				     const struct wfx_hif_msg *hif, const void *buf)
+{
+	if (!wdev->pdata.gpio_wakeup || gpiod_get_value(wdev->pdata.gpio_wakeup) == 0) {
+		dev_warn(wdev->dev, "unexpected wake-up indication\n");
+		return -EIO;
+	}
+	return 0;
+}
+
+static int wfx_hif_receive_indication(struct wfx_dev *wdev, const struct wfx_hif_msg *hif,
+				      const void *buf, struct sk_buff *skb)
+{
+	struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
+	const struct wfx_hif_ind_rx *body = buf;
+
+	if (!wvif) {
+		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
+		return -EIO;
+	}
+	skb_pull(skb, sizeof(struct wfx_hif_msg) + sizeof(struct wfx_hif_ind_rx));
+	wfx_rx_cb(wvif, body, skb);
+
+	return 0;
+}
+
+static int wfx_hif_event_indication(struct wfx_dev *wdev,
+				    const struct wfx_hif_msg *hif, const void *buf)
+{
+	struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
+	const struct wfx_hif_ind_event *body = buf;
+	int type = le32_to_cpu(body->event_id);
+
+	if (!wvif) {
+		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
+		return -EIO;
+	}
+
+	switch (type) {
+	case HIF_EVENT_IND_RCPI_RSSI:
+		wfx_event_report_rssi(wvif, body->event_data.rcpi_rssi);
+		break;
+	case HIF_EVENT_IND_BSSLOST:
+		schedule_delayed_work(&wvif->beacon_loss_work, 0);
+		break;
+	case HIF_EVENT_IND_BSSREGAINED:
+		cancel_delayed_work(&wvif->beacon_loss_work);
+		dev_dbg(wdev->dev, "ignore BSSREGAINED indication\n");
+		break;
+	case HIF_EVENT_IND_PS_MODE_ERROR:
+		dev_warn(wdev->dev, "error while processing power save request: %d\n",
+			 le32_to_cpu(body->event_data.ps_mode_error));
+		break;
+	default:
+		dev_warn(wdev->dev, "unhandled event indication: %.2x\n", type);
+		break;
+	}
+	return 0;
+}
+
+static int wfx_hif_pm_mode_complete_indication(struct wfx_dev *wdev,
+					       const struct wfx_hif_msg *hif, const void *buf)
+{
+	struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
+
+	if (!wvif) {
+		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
+		return -EIO;
+	}
+	complete(&wvif->set_pm_mode_complete);
+
+	return 0;
+}
+
+static int wfx_hif_scan_complete_indication(struct wfx_dev *wdev,
+					    const struct wfx_hif_msg *hif, const void *buf)
+{
+	struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
+	const struct wfx_hif_ind_scan_cmpl *body = buf;
+
+	if (!wvif) {
+		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
+		return -EIO;
+	}
+
+	wfx_scan_complete(wvif, body->num_channels_completed);
+
+	return 0;
+}
+
+static int wfx_hif_join_complete_indication(struct wfx_dev *wdev,
+					    const struct wfx_hif_msg *hif, const void *buf)
+{
+	struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
+
+	if (!wvif) {
+		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
+		return -EIO;
+	}
+	dev_warn(wdev->dev, "unattended JoinCompleteInd\n");
+
+	return 0;
+}
+
+static int wfx_hif_suspend_resume_indication(struct wfx_dev *wdev,
+					     const struct wfx_hif_msg *hif, const void *buf)
+{
+	const struct wfx_hif_ind_suspend_resume_tx *body = buf;
+	struct wfx_vif *wvif;
+
+	if (body->bc_mc_only) {
+		wvif = wdev_to_wvif(wdev, hif->interface);
+		if (!wvif) {
+			dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
+			return -EIO;
+		}
+		if (body->resume)
+			wfx_suspend_resume_mc(wvif, STA_NOTIFY_AWAKE);
+		else
+			wfx_suspend_resume_mc(wvif, STA_NOTIFY_SLEEP);
+	} else {
+		WARN(body->peer_sta_set, "misunderstood indication");
+		WARN(hif->interface != 2, "misunderstood indication");
+		if (body->resume)
+			wfx_suspend_hot_dev(wdev, STA_NOTIFY_AWAKE);
+		else
+			wfx_suspend_hot_dev(wdev, STA_NOTIFY_SLEEP);
+	}
+
+	return 0;
+}
+
+static int wfx_hif_generic_indication(struct wfx_dev *wdev,
+				      const struct wfx_hif_msg *hif, const void *buf)
+{
+	const struct wfx_hif_ind_generic *body = buf;
+	int type = le32_to_cpu(body->type);
+
+	switch (type) {
+	case HIF_GENERIC_INDICATION_TYPE_RAW:
+		return 0;
+	case HIF_GENERIC_INDICATION_TYPE_STRING:
+		dev_info(wdev->dev, "firmware says: %s\n", (char *)&body->data);
+		return 0;
+	case HIF_GENERIC_INDICATION_TYPE_RX_STATS:
+		mutex_lock(&wdev->rx_stats_lock);
+		/* Older firmware send a generic indication beside RxStats */
+		if (!wfx_api_older_than(wdev, 1, 4))
+			dev_info(wdev->dev, "Rx test ongoing. Temperature: %d degrees C\n",
+				 body->data.rx_stats.current_temp);
+		memcpy(&wdev->rx_stats, &body->data.rx_stats, sizeof(wdev->rx_stats));
+		mutex_unlock(&wdev->rx_stats_lock);
+		return 0;
+	case HIF_GENERIC_INDICATION_TYPE_TX_POWER_LOOP_INFO:
+		mutex_lock(&wdev->tx_power_loop_info_lock);
+		memcpy(&wdev->tx_power_loop_info, &body->data.tx_power_loop_info,
+		       sizeof(wdev->tx_power_loop_info));
+		mutex_unlock(&wdev->tx_power_loop_info_lock);
+		return 0;
+	default:
+		dev_err(wdev->dev, "generic_indication: unknown indication type: %#.8x\n", type);
+		return -EIO;
+	}
+}
+
+static const struct {
+	int val;
+	const char *str;
+	bool has_param;
+} hif_errors[] = {
+	{ HIF_ERROR_FIRMWARE_ROLLBACK,
+		"rollback status" },
+	{ HIF_ERROR_FIRMWARE_DEBUG_ENABLED,
+		"debug feature enabled" },
+	{ HIF_ERROR_PDS_PAYLOAD,
+		"PDS version is not supported" },
+	{ HIF_ERROR_PDS_TESTFEATURE,
+		"PDS ask for an unknown test mode" },
+	{ HIF_ERROR_OOR_VOLTAGE,
+		"out-of-range power supply voltage", true },
+	{ HIF_ERROR_OOR_TEMPERATURE,
+		"out-of-range temperature", true },
+	{ HIF_ERROR_SLK_REQ_DURING_KEY_EXCHANGE,
+		"secure link does not expect request during key exchange" },
+	{ HIF_ERROR_SLK_SESSION_KEY,
+		"secure link session key is invalid" },
+	{ HIF_ERROR_SLK_OVERFLOW,
+		"secure link overflow" },
+	{ HIF_ERROR_SLK_WRONG_ENCRYPTION_STATE,
+		"secure link messages list does not match message encryption" },
+	{ HIF_ERROR_SLK_UNCONFIGURED,
+		"secure link not yet configured" },
+	{ HIF_ERROR_HIF_BUS_FREQUENCY_TOO_LOW,
+		"bus clock is too slow (<1kHz)" },
+	{ HIF_ERROR_HIF_RX_DATA_TOO_LARGE,
+		"HIF message too large" },
+	/* Following errors only exists in old firmware versions: */
+	{ HIF_ERROR_HIF_TX_QUEUE_FULL,
+		"HIF messages queue is full" },
+	{ HIF_ERROR_HIF_BUS,
+		"HIF bus" },
+	{ HIF_ERROR_SLK_MULTI_TX_UNSUPPORTED,
+		"secure link does not support multi-tx confirmations" },
+	{ HIF_ERROR_SLK_OUTDATED_SESSION_KEY,
+		"secure link session key is outdated" },
+	{ HIF_ERROR_SLK_DECRYPTION,
+		"secure link params (nonce or tag) mismatch" },
+};
+
+static int wfx_hif_error_indication(struct wfx_dev *wdev,
+				    const struct wfx_hif_msg *hif, const void *buf)
+{
+	const struct wfx_hif_ind_error *body = buf;
+	int type = le32_to_cpu(body->type);
+	int param = (s8)body->data[0];
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(hif_errors); i++)
+		if (type == hif_errors[i].val)
+			break;
+	if (i < ARRAY_SIZE(hif_errors))
+		if (hif_errors[i].has_param)
+			dev_err(wdev->dev, "asynchronous error: %s: %d\n",
+				hif_errors[i].str, param);
+		else
+			dev_err(wdev->dev, "asynchronous error: %s\n", hif_errors[i].str);
+	else
+		dev_err(wdev->dev, "asynchronous error: unknown: %08x\n", type);
+	print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET,
+		       16, 1, hif, le16_to_cpu(hif->len), false);
+	wdev->chip_frozen = true;
+
+	return 0;
+};
+
+static int wfx_hif_exception_indication(struct wfx_dev *wdev,
+					const struct wfx_hif_msg *hif, const void *buf)
+{
+	const struct wfx_hif_ind_exception *body = buf;
+	int type = le32_to_cpu(body->type);
+
+	if (type == 4)
+		dev_err(wdev->dev, "firmware assert %d\n", le32_to_cpup((__le32 *)body->data));
+	else
+		dev_err(wdev->dev, "firmware exception\n");
+	print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET,
+		       16, 1, hif, le16_to_cpu(hif->len), false);
+	wdev->chip_frozen = true;
+
+	return -1;
+}
+
+static const struct {
+	int msg_id;
+	int (*handler)(struct wfx_dev *wdev, const struct wfx_hif_msg *hif, const void *buf);
+} hif_handlers[] = {
+	/* Confirmations */
+	{ HIF_CNF_ID_TX,                wfx_hif_tx_confirm },
+	{ HIF_CNF_ID_MULTI_TRANSMIT,    wfx_hif_multi_tx_confirm },
+	/* Indications */
+	{ HIF_IND_ID_STARTUP,           wfx_hif_startup_indication },
+	{ HIF_IND_ID_WAKEUP,            wfx_hif_wakeup_indication },
+	{ HIF_IND_ID_JOIN_COMPLETE,     wfx_hif_join_complete_indication },
+	{ HIF_IND_ID_SET_PM_MODE_CMPL,  wfx_hif_pm_mode_complete_indication },
+	{ HIF_IND_ID_SCAN_CMPL,         wfx_hif_scan_complete_indication },
+	{ HIF_IND_ID_SUSPEND_RESUME_TX, wfx_hif_suspend_resume_indication },
+	{ HIF_IND_ID_EVENT,             wfx_hif_event_indication },
+	{ HIF_IND_ID_GENERIC,           wfx_hif_generic_indication },
+	{ HIF_IND_ID_ERROR,             wfx_hif_error_indication },
+	{ HIF_IND_ID_EXCEPTION,         wfx_hif_exception_indication },
+	/* FIXME: allocate skb_p from wfx_hif_receive_indication and make it generic */
+	//{ HIF_IND_ID_RX,              wfx_hif_receive_indication },
+};
+
+void wfx_handle_rx(struct wfx_dev *wdev, struct sk_buff *skb)
+{
+	int i;
+	const struct wfx_hif_msg *hif = (const struct wfx_hif_msg *)skb->data;
+	int hif_id = hif->id;
+
+	if (hif_id == HIF_IND_ID_RX) {
+		/* wfx_hif_receive_indication take care of skb lifetime */
+		wfx_hif_receive_indication(wdev, hif, hif->body, skb);
+		return;
+	}
+	/* Note: mutex_is_lock cause an implicit memory barrier that protect buf_send */
+	if (mutex_is_locked(&wdev->hif_cmd.lock) &&
+	    wdev->hif_cmd.buf_send && wdev->hif_cmd.buf_send->id == hif_id) {
+		wfx_hif_generic_confirm(wdev, hif, hif->body);
+		goto free;
+	}
+	for (i = 0; i < ARRAY_SIZE(hif_handlers); i++) {
+		if (hif_handlers[i].msg_id == hif_id) {
+			if (hif_handlers[i].handler)
+				hif_handlers[i].handler(wdev, hif, hif->body);
+			goto free;
+		}
+	}
+	if (hif_id & HIF_ID_IS_INDICATION)
+		dev_err(wdev->dev, "unsupported HIF indication: ID %02x\n", hif_id);
+	else
+		dev_err(wdev->dev, "unexpected HIF confirmation: ID %02x\n", hif_id);
+free:
+	dev_kfree_skb(skb);
+}