Message-ID: <20190919105153.15285-13-Jerome.Pouiller@silabs.com>
Date:   Thu, 19 Sep 2019 10:52:40 +0000
From:   Jerome Pouiller <Jerome.Pouiller@...abs.com>
To:     "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        David Le Goff <David.Legoff@...abs.com>,
        Jerome Pouiller <Jerome.Pouiller@...abs.com>
Subject: [PATCH 12/20] staging: wfx: add HIF commands helpers

From: Jérôme Pouiller <jerome.pouiller@...abs.com>

Provide an abstraction for HIF commands.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
---
 drivers/staging/wfx/hif_tx.c     | 375 +++++++++++++++++++++++++++++++
 drivers/staging/wfx/hif_tx.h     |  33 +++
 drivers/staging/wfx/hif_tx_mib.h | 281 +++++++++++++++++++++++
 drivers/staging/wfx/wfx.h        |   6 +
 4 files changed, 695 insertions(+)
 create mode 100644 drivers/staging/wfx/hif_tx_mib.h

diff --git a/drivers/staging/wfx/hif_tx.c b/drivers/staging/wfx/hif_tx.c
index f81a19089db4..781a6e28dbad 100644
--- a/drivers/staging/wfx/hif_tx.c
+++ b/drivers/staging/wfx/hif_tx.c
@@ -12,6 +12,7 @@
 #include "hif_tx.h"
 #include "wfx.h"
 #include "bh.h"
+#include "hwio.h"
 #include "debug.h"
 
 void wfx_init_hif_cmd(struct wfx_hif_cmd *hif_cmd)
@@ -21,6 +22,29 @@ void wfx_init_hif_cmd(struct wfx_hif_cmd *hif_cmd)
 	mutex_init(&hif_cmd->lock);
 }
 
+static void wfx_fill_header(struct hif_msg *hif, int if_id, unsigned int cmd, size_t size)
+{
+	if (if_id == -1)
+		if_id = 2;
+
+	WARN(cmd > 0x3f, "invalid WSM command %#.2x", cmd);
+	WARN(size > 0xFFF, "requested buffer is too large: %zu bytes", size);
+	WARN(if_id > 0x3, "invalid interface ID %d", if_id);
+
+	hif->len = cpu_to_le16(size + 4);
+	hif->id = cmd;
+	hif->interface = if_id;
+}
+
+static void *wfx_alloc_hif(size_t body_len, struct hif_msg **hif)
+{
+	*hif = kzalloc(sizeof(struct hif_msg) + body_len, GFP_KERNEL);
+	if (*hif)
+		return (*hif)->body;
+	else
+		return NULL;
+}
+
 int wfx_cmd_send(struct wfx_dev *wdev, struct hif_msg *request, void *reply, size_t reply_len, bool async)
 {
 	const char *mib_name = "";
@@ -85,3 +109,354 @@ int wfx_cmd_send(struct wfx_dev *wdev, struct hif_msg *request, void *reply, siz
 
 	return ret;
 }
+
+// This function is special. After HIF_REQ_ID_SHUT_DOWN, chip won't reply to any
+// request anymore. We need to slightly hack struct wfx_hif_cmd for that job. Be
+// carefull to only call this funcion during device unregister.
+int hif_shutdown(struct wfx_dev *wdev)
+{
+	int ret;
+	struct hif_msg *hif;
+
+	wfx_alloc_hif(0, &hif);
+	wfx_fill_header(hif, -1, HIF_REQ_ID_SHUT_DOWN, 0);
+	ret = wfx_cmd_send(wdev, hif, NULL, 0, true);
+	// After this command, chip won't reply. Be sure to give enough time to
+	// bh to send buffer:
+	msleep(100);
+	wdev->hif_cmd.buf_send = NULL;
+	if (wdev->pdata.gpio_wakeup)
+		gpiod_set_value(wdev->pdata.gpio_wakeup, 0);
+	else
+		control_reg_write(wdev, 0);
+	mutex_unlock(&wdev->hif_cmd.lock);
+	kfree(hif);
+	return ret;
+}
+
+int hif_configuration(struct wfx_dev *wdev, const u8 *conf, size_t len)
+{
+	int ret;
+	size_t buf_len = sizeof(struct hif_req_configuration) + len;
+	struct hif_msg *hif;
+	struct hif_req_configuration *body = wfx_alloc_hif(buf_len, &hif);
+
+	body->length = cpu_to_le16(len);
+	memcpy(body->pds_data, conf, len);
+	wfx_fill_header(hif, -1, HIF_REQ_ID_CONFIGURATION, buf_len);
+	ret = wfx_cmd_send(wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_reset(struct wfx_vif *wvif, bool reset_stat)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_reset *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	body->reset_flags.reset_stat = reset_stat;
+	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_RESET, sizeof(*body));
+	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_read_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id, void *val, size_t val_len)
+{
+	int ret;
+	struct hif_msg *hif;
+	int buf_len = sizeof(struct hif_cnf_read_mib) + val_len;
+	struct hif_req_read_mib *body = wfx_alloc_hif(sizeof(*body), &hif);
+	struct hif_cnf_read_mib *reply = kmalloc(buf_len, GFP_KERNEL);
+
+	body->mib_id = cpu_to_le16(mib_id);
+	wfx_fill_header(hif, vif_id, HIF_REQ_ID_READ_MIB, sizeof(*body));
+	ret = wfx_cmd_send(wdev, hif, reply, buf_len, false);
+
+	if (!ret && mib_id != reply->mib_id) {
+		dev_warn(wdev->dev, "%s: confirmation mismatch request\n", __func__);
+		ret = -EIO;
+	}
+	if (ret == -ENOMEM)
+		dev_err(wdev->dev, "buffer is too small to receive %s (%zu < %d)\n",
+			get_mib_name(mib_id), val_len, reply->length);
+	if (!ret)
+		memcpy(val, &reply->mib_data, reply->length);
+	else
+		memset(val, 0xFF, val_len);
+	kfree(hif);
+	kfree(reply);
+	return ret;
+}
+
+int hif_write_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id, void *val, size_t val_len)
+{
+	int ret;
+	struct hif_msg *hif;
+	int buf_len = sizeof(struct hif_req_write_mib) + val_len;
+	struct hif_req_write_mib *body = wfx_alloc_hif(buf_len, &hif);
+
+	body->mib_id = cpu_to_le16(mib_id);
+	body->length = cpu_to_le16(val_len);
+	memcpy(&body->mib_data, val, val_len);
+	wfx_fill_header(hif, vif_id, HIF_REQ_ID_WRITE_MIB, buf_len);
+	ret = wfx_cmd_send(wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_scan(struct wfx_vif *wvif, const struct wfx_scan_params *arg)
+{
+	int ret, i;
+	struct hif_msg *hif;
+	struct hif_ssid_def *ssids;
+	size_t buf_len = sizeof(struct hif_req_start_scan) +
+		arg->scan_req.num_of_channels * sizeof(u8) +
+		arg->scan_req.num_of_ssi_ds * sizeof(struct hif_ssid_def);
+	struct hif_req_start_scan *body = wfx_alloc_hif(buf_len, &hif);
+	u8 *ptr = (u8 *) body + sizeof(*body);
+
+	WARN(arg->scan_req.num_of_channels > HIF_API_MAX_NB_CHANNELS, "invalid params");
+	WARN(arg->scan_req.num_of_ssi_ds > 2, "invalid params");
+	WARN(arg->scan_req.band > 1, "invalid params");
+
+	// FIXME: This API is unnecessary complex, fixing NumOfChannels and
+	// adding a member SsidDef at end of struct hif_req_start_scan would
+	// simplify that a lot.
+	memcpy(body, &arg->scan_req, sizeof(*body));
+	cpu_to_le32s(&body->min_channel_time);
+	cpu_to_le32s(&body->max_channel_time);
+	cpu_to_le32s(&body->tx_power_level);
+	memcpy(ptr, arg->ssids, arg->scan_req.num_of_ssi_ds * sizeof(struct hif_ssid_def));
+	ssids = (struct hif_ssid_def *) ptr;
+	for (i = 0; i < body->num_of_ssi_ds; ++i)
+		cpu_to_le32s(&ssids[i].ssid_length);
+	ptr += arg->scan_req.num_of_ssi_ds * sizeof(struct hif_ssid_def);
+	memcpy(ptr, arg->ch, arg->scan_req.num_of_channels * sizeof(u8));
+	ptr += arg->scan_req.num_of_channels * sizeof(u8);
+	WARN(buf_len != ptr - (u8 *) body, "allocation size mismatch");
+	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 hif_stop_scan(struct wfx_vif *wvif)
+{
+	int ret;
+	struct hif_msg *hif;
+	// body associated to HIF_REQ_ID_STOP_SCAN is empty
+	wfx_alloc_hif(0, &hif);
+
+	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_STOP_SCAN, 0);
+	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_join(struct wfx_vif *wvif, const struct hif_req_join *arg)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_join *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	memcpy(body, arg, sizeof(struct hif_req_join));
+	cpu_to_le16s(&body->channel_number);
+	cpu_to_le16s(&body->atim_window);
+	cpu_to_le32s(&body->ssid_length);
+	cpu_to_le32s(&body->beacon_interval);
+	cpu_to_le32s(&body->basic_rate_set);
+	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_JOIN, sizeof(*body));
+	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_set_bss_params(struct wfx_vif *wvif, const struct hif_req_set_bss_params *arg)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_set_bss_params *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	memcpy(body, arg, sizeof(*body));
+	cpu_to_le16s(&body->aid);
+	cpu_to_le32s(&body->operational_rate_set);
+	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_SET_BSS_PARAMS, sizeof(*body));
+	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_add_key(struct wfx_dev *wdev, const struct hif_req_add_key *arg)
+{
+	int ret;
+	struct hif_msg *hif;
+	// FIXME: only send necessary bits
+	struct hif_req_add_key *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	// FIXME: swap bytes as necessary in body
+	memcpy(body, arg, sizeof(*body));
+	if (wfx_api_older_than(wdev, 1, 5))
+		// Legacy firmwares expect that add_key to be sent on right
+		// interface.
+		wfx_fill_header(hif, arg->int_id, HIF_REQ_ID_ADD_KEY, sizeof(*body));
+	else
+		wfx_fill_header(hif, -1, HIF_REQ_ID_ADD_KEY, sizeof(*body));
+	ret = wfx_cmd_send(wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_remove_key(struct wfx_dev *wdev, int idx)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_remove_key *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	body->entry_index = idx;
+	wfx_fill_header(hif, -1, HIF_REQ_ID_REMOVE_KEY, sizeof(*body));
+	ret = wfx_cmd_send(wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_set_edca_queue_params(struct wfx_vif *wvif, const struct hif_req_edca_queue_params *arg)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_edca_queue_params *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	// NOTE: queues numerotation are not the same between WFx and Linux
+	memcpy(body, arg, sizeof(*body));
+	cpu_to_le16s(&body->cw_min);
+	cpu_to_le16s(&body->cw_max);
+	cpu_to_le16s(&body->tx_op_limit);
+	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_EDCA_QUEUE_PARAMS, sizeof(*body));
+	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_set_pm(struct wfx_vif *wvif, const struct hif_req_set_pm_mode *arg)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_set_pm_mode *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	memcpy(body, arg, sizeof(*body));
+	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_SET_PM_MODE, sizeof(*body));
+	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_start(struct wfx_vif *wvif, const struct hif_req_start *arg)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_start *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	memcpy(body, arg, sizeof(*body));
+	cpu_to_le16s(&body->channel_number);
+	cpu_to_le32s(&body->beacon_interval);
+	cpu_to_le32s(&body->basic_rate_set);
+	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_START, sizeof(*body));
+	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_beacon_transmit(struct wfx_vif *wvif, bool enable_beaconing)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_beacon_transmit *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	body->enable_beaconing = enable_beaconing ? 1 : 0;
+	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_BEACON_TRANSMIT, sizeof(*body));
+	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_map_link(struct wfx_vif *wvif, u8 *mac_addr, int flags, int sta_id)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_map_link *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	if (mac_addr)
+		ether_addr_copy(body->mac_addr, mac_addr);
+	body->map_link_flags = *(struct hif_map_link_flags *) &flags;
+	body->peer_sta_id = sta_id;
+	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_MAP_LINK, sizeof(*body));
+	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_update_ie(struct wfx_vif *wvif, const struct hif_ie_flags *target_frame,
+		  const u8 *ies, size_t ies_len)
+{
+	int ret;
+	struct hif_msg *hif;
+	int buf_len = sizeof(struct hif_req_update_ie) + ies_len;
+	struct hif_req_update_ie *body = wfx_alloc_hif(buf_len, &hif);
+
+	memcpy(&body->ie_flags, target_frame, sizeof(struct hif_ie_flags));
+	body->num_i_es = cpu_to_le16(1);
+	memcpy(body->ie, ies, ies_len);
+	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_UPDATE_IE, buf_len);
+	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_sl_send_pub_keys(struct wfx_dev *wdev, const uint8_t *pubkey, const uint8_t *pubkey_hmac)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_sl_exchange_pub_keys *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	body->algorithm = HIF_SL_CURVE25519;
+	memcpy(body->host_pub_key, pubkey, sizeof(body->host_pub_key));
+	memcpy(body->host_pub_key_mac, pubkey_hmac, sizeof(body->host_pub_key_mac));
+	wfx_fill_header(hif, -1, HIF_REQ_ID_SL_EXCHANGE_PUB_KEYS, sizeof(*body));
+	ret = wfx_cmd_send(wdev, hif, NULL, 0, false);
+	kfree(hif);
+	// Compatibility with legacy secure link
+	if (ret == SL_PUB_KEY_EXCHANGE_STATUS_SUCCESS)
+		ret = 0;
+	return ret;
+}
+
+int hif_sl_config(struct wfx_dev *wdev, const unsigned long *bitmap)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_sl_configure *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	memcpy(body->encr_bmp, bitmap, sizeof(body->encr_bmp));
+	wfx_fill_header(hif, -1, HIF_REQ_ID_SL_CONFIGURE, sizeof(*body));
+	ret = wfx_cmd_send(wdev, hif, NULL, 0, false);
+	kfree(hif);
+	return ret;
+}
+
+int hif_sl_set_mac_key(struct wfx_dev *wdev, const uint8_t *slk_key, int destination)
+{
+	int ret;
+	struct hif_msg *hif;
+	struct hif_req_set_sl_mac_key *body = wfx_alloc_hif(sizeof(*body), &hif);
+
+	memcpy(body->key_value, slk_key, sizeof(body->key_value));
+	body->otp_or_ram = destination;
+	wfx_fill_header(hif, -1, HIF_REQ_ID_SET_SL_MAC_KEY, sizeof(*body));
+	ret = wfx_cmd_send(wdev, hif, NULL, 0, false);
+	kfree(hif);
+	// Compatibility with legacy secure link
+	if (ret == SL_MAC_KEY_STATUS_SUCCESS)
+		ret = 0;
+	return ret;
+}
diff --git a/drivers/staging/wfx/hif_tx.h b/drivers/staging/wfx/hif_tx.h
index ccf2b7e5e851..31f2a02c8466 100644
--- a/drivers/staging/wfx/hif_tx.h
+++ b/drivers/staging/wfx/hif_tx.h
@@ -15,6 +15,12 @@
 struct wfx_dev;
 struct wfx_vif;
 
+struct wfx_scan_params {
+	struct hif_req_start_scan scan_req;
+	struct hif_ssid_def *ssids;
+	uint8_t *ch;
+};
+
 struct wfx_hif_cmd {
 	struct mutex      lock;
 	struct completion ready;
@@ -30,4 +36,31 @@ void wfx_init_hif_cmd(struct wfx_hif_cmd *wfx_hif_cmd);
 int wfx_cmd_send(struct wfx_dev *wdev, struct hif_msg *request,
 		 void *reply, size_t reply_len, bool async);
 
+int hif_shutdown(struct wfx_dev *wdev);
+int hif_configuration(struct wfx_dev *wdev, const u8 *conf, size_t len);
+int hif_reset(struct wfx_vif *wvif, bool reset_stat);
+int hif_read_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id,
+		 void *buf, size_t buf_size);
+int hif_write_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id,
+		  void *buf, size_t buf_size);
+int hif_scan(struct wfx_vif *wvif, const struct wfx_scan_params *arg);
+int hif_stop_scan(struct wfx_vif *wvif);
+int hif_join(struct wfx_vif *wvif, const struct hif_req_join *arg);
+int hif_set_pm(struct wfx_vif *wvif, const struct hif_req_set_pm_mode *arg);
+int hif_set_bss_params(struct wfx_vif *wvif,
+		       const struct hif_req_set_bss_params *arg);
+int hif_add_key(struct wfx_dev *wdev, const struct hif_req_add_key *arg);
+int hif_remove_key(struct wfx_dev *wdev, int idx);
+int hif_set_edca_queue_params(struct wfx_vif *wvif,
+			      const struct hif_req_edca_queue_params *arg);
+int hif_start(struct wfx_vif *wvif, const struct hif_req_start *arg);
+int hif_beacon_transmit(struct wfx_vif *wvif, bool enable);
+int hif_map_link(struct wfx_vif *wvif, u8 *mac_addr, int flags, int sta_id);
+int hif_update_ie(struct wfx_vif *wvif, const struct hif_ie_flags *target_frame,
+		  const u8 *ies, size_t ies_len);
+int hif_sl_set_mac_key(struct wfx_dev *wdev, const uint8_t *slk_key, int destination);
+int hif_sl_config(struct wfx_dev *wdev, const unsigned long *bitmap);
+int hif_sl_send_pub_keys(struct wfx_dev *wdev,
+			 const uint8_t *pubkey, const uint8_t *pubkey_hmac);
+
 #endif
diff --git a/drivers/staging/wfx/hif_tx_mib.h b/drivers/staging/wfx/hif_tx_mib.h
new file mode 100644
index 000000000000..f6624a403016
--- /dev/null
+++ b/drivers/staging/wfx/hif_tx_mib.h
@@ -0,0 +1,281 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Implementation of host-to-chip MIBs of WFxxx Split Mac (WSM) API.
+ *
+ * Copyright (c) 2017-2019, Silicon Laboratories, Inc.
+ * Copyright (c) 2010, ST-Ericsson
+ * Copyright (C) 2010, ST-Ericsson SA
+ */
+#ifndef WFX_HIF_TX_MIB_H
+#define WFX_HIF_TX_MIB_H
+
+#include <linux/etherdevice.h>
+
+#include "wfx.h"
+#include "hif_tx.h"
+#include "hif_api_mib.h"
+
+static inline int hif_set_output_power(struct wfx_vif *wvif, int power_level)
+{
+	__le32 val = cpu_to_le32(power_level);
+
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_CURRENT_TX_POWER_LEVEL,
+			     &val, sizeof(val));
+}
+
+static inline int hif_set_beacon_wakeup_period(struct wfx_vif *wvif,
+					       unsigned int dtim_interval,
+					       unsigned int listen_interval)
+{
+	struct hif_mib_beacon_wake_up_period val = {
+		.wakeup_period_min = dtim_interval,
+		.receive_dtim = 0,
+		.wakeup_period_max = cpu_to_le16(listen_interval),
+	};
+
+	if (dtim_interval > 0xFF || listen_interval > 0xFFFF)
+		return -EINVAL;
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_BEACON_WAKEUP_PERIOD,
+			     &val, sizeof(val));
+}
+
+static inline int hif_set_rcpi_rssi_threshold(struct wfx_vif *wvif,
+					      struct hif_mib_rcpi_rssi_threshold *arg)
+{
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_RCPI_RSSI_THRESHOLD, arg, sizeof(*arg));
+}
+
+static inline int hif_get_counters_table(struct wfx_dev *wdev,
+					 struct hif_mib_extended_count_table *arg)
+{
+	if (wfx_api_older_than(wdev, 1, 3)) {
+		// extended_count_table is wider than count_table
+		memset(arg, 0xFF, sizeof(*arg));
+		return hif_read_mib(wdev, 0, HIF_MIB_ID_COUNTERS_TABLE,
+				    arg, sizeof(struct hif_mib_count_table));
+	} else {
+		return hif_read_mib(wdev, 0, HIF_MIB_ID_EXTENDED_COUNTERS_TABLE,
+				    arg, sizeof(struct hif_mib_extended_count_table));
+	}
+}
+
+static inline int hif_set_macaddr(struct wfx_vif *wvif, u8 *mac)
+{
+	struct hif_mib_mac_address msg = { };
+
+	if (mac)
+		ether_addr_copy(msg.mac_addr, mac);
+	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_DOT11_MAC_ADDRESS,
+			     &msg, sizeof(msg));
+}
+
+static inline int hif_set_rx_filter(struct wfx_vif *wvif, bool filter_bssid,
+				    bool fwd_probe_req)
+{
+	struct hif_mib_rx_filter val = { };
+
+	if (filter_bssid)
+		val.bssid_filter = 1;
+	if (fwd_probe_req)
+		val.fwd_probe_req = 1;
+	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_RX_FILTER,
+			     &val, sizeof(val));
+}
+
+static inline int hif_set_beacon_filter_table(struct wfx_vif *wvif,
+					      struct hif_mib_bcn_filter_table *ft)
+{
+	size_t buf_len = struct_size(ft, ie_table, ft->num_of_info_elmts);
+
+	cpu_to_le32s(&ft->num_of_info_elmts);
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_BEACON_FILTER_TABLE, ft, buf_len);
+}
+
+static inline int hif_beacon_filter_control(struct wfx_vif *wvif,
+					    int enable, int beacon_count)
+{
+	struct hif_mib_bcn_filter_enable arg = {
+		.enable = cpu_to_le32(enable),
+		.bcn_count = cpu_to_le32(beacon_count),
+	};
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_BEACON_FILTER_ENABLE, &arg, sizeof(arg));
+}
+
+static inline int hif_set_operational_mode(struct wfx_dev *wdev,
+					   enum hif_op_power_mode mode)
+{
+	struct hif_mib_gl_operational_power_mode val = {
+		.power_mode = mode,
+		.wup_ind_activation = 1,
+	};
+
+	return hif_write_mib(wdev, -1, HIF_MIB_ID_GL_OPERATIONAL_POWER_MODE,
+			     &val, sizeof(val));
+}
+
+static inline int hif_set_template_frame(struct wfx_vif *wvif,
+					 struct hif_mib_template_frame *arg)
+{
+	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_TEMPLATE_FRAME,
+			     arg, sizeof(*arg));
+}
+
+static inline int hif_set_mfp(struct wfx_vif *wvif, bool capable, bool required)
+{
+	struct hif_mib_protected_mgmt_policy val = { };
+
+	WARN_ON(required && !capable);
+	if (capable) {
+		val.pmf_enable = 1;
+		val.host_enc_auth_frames = 1;
+	}
+	if (!required)
+		val.unpmf_allowed = 1;
+	cpu_to_le32s(&val);
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_PROTECTED_MGMT_POLICY,
+			     &val, sizeof(val));
+}
+
+static inline int hif_set_block_ack_policy(struct wfx_vif *wvif,
+					   u8 tx_tid_policy, u8 rx_tid_policy)
+{
+	struct hif_mib_block_ack_policy val = {
+		.block_ack_tx_tid_policy = tx_tid_policy,
+		.block_ack_rx_tid_policy = rx_tid_policy,
+	};
+
+	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_BLOCK_ACK_POLICY,
+			     &val, sizeof(val));
+}
+
+static inline int hif_set_association_mode(struct wfx_vif *wvif,
+					   struct hif_mib_set_association_mode *arg)
+{
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_SET_ASSOCIATION_MODE, arg, sizeof(*arg));
+}
+
+static inline int hif_set_tx_rate_retry_policy(struct wfx_vif *wvif,
+					       struct hif_mib_set_tx_rate_retry_policy *arg)
+{
+	size_t size = struct_size(arg, tx_rate_retry_policy, arg->num_tx_rate_policies);
+
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_SET_TX_RATE_RETRY_POLICY, arg, size);
+}
+
+static inline int hif_set_mac_addr_condition(struct wfx_vif *wvif,
+					     struct hif_mib_mac_addr_data_frame_condition *arg)
+{
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_MAC_ADDR_DATAFRAME_CONDITION,
+			     arg, sizeof(*arg));
+}
+
+static inline int hif_set_uc_mc_bc_condition(struct wfx_vif *wvif,
+					     struct hif_mib_uc_mc_bc_data_frame_condition *arg)
+{
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_UC_MC_BC_DATAFRAME_CONDITION,
+			     arg, sizeof(*arg));
+}
+
+static inline int hif_set_config_data_filter(struct wfx_vif *wvif,
+					     struct hif_mib_config_data_filter *arg)
+{
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_CONFIG_DATA_FILTER, arg, sizeof(*arg));
+}
+
+static inline int hif_set_data_filtering(struct wfx_vif *wvif,
+					 struct hif_mib_set_data_filtering *arg)
+{
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_SET_DATA_FILTERING, arg, sizeof(*arg));
+}
+
+static inline int hif_keep_alive_period(struct wfx_vif *wvif, int period)
+{
+	struct hif_mib_keep_alive_period arg = {
+		.keep_alive_period = cpu_to_le16(period),
+	};
+
+	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_KEEP_ALIVE_PERIOD,
+			     &arg, sizeof(arg));
+};
+
+static inline int hif_set_arp_ipv4_filter(struct wfx_vif *wvif,
+					  struct hif_mib_arp_ip_addr_table *fp)
+{
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_ARP_IP_ADDRESSES_TABLE,
+			     fp, sizeof(*fp));
+}
+
+static inline int hif_use_multi_tx_conf(struct wfx_dev *wdev,
+					bool enabled)
+{
+	__le32 arg = enabled ? cpu_to_le32(1) : 0;
+
+	return hif_write_mib(wdev, -1, HIF_MIB_ID_GL_SET_MULTI_MSG,
+			     &arg, sizeof(arg));
+}
+
+static inline int hif_set_uapsd_info(struct wfx_vif *wvif,
+				     struct hif_mib_set_uapsd_information *arg)
+{
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_SET_UAPSD_INFORMATION,
+			     arg, sizeof(*arg));
+}
+
+static inline int hif_erp_use_protection(struct wfx_vif *wvif, bool enable)
+{
+	__le32 arg = enable ? cpu_to_le32(1) : 0;
+
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_NON_ERP_PROTECTION, &arg, sizeof(arg));
+}
+
+static inline int hif_slot_time(struct wfx_vif *wvif, int val)
+{
+	__le32 arg = cpu_to_le32(val);
+
+	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_SLOT_TIME,
+			     &arg, sizeof(arg));
+}
+
+static inline int hif_dual_cts_protection(struct wfx_vif *wvif, bool val)
+{
+	struct hif_mib_set_ht_protection arg = {
+		.dual_cts_prot = val,
+	};
+
+	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_SET_HT_PROTECTION,
+			     &arg, sizeof(arg));
+}
+
+static inline int hif_wep_default_key_id(struct wfx_vif *wvif, int val)
+{
+	__le32 arg = cpu_to_le32(val);
+
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID,
+			     &arg, sizeof(arg));
+}
+
+static inline int hif_rts_threshold(struct wfx_vif *wvif, int val)
+{
+	__le32 arg = cpu_to_le32(val > 0 ? val : 0xFFFF);
+
+	return hif_write_mib(wvif->wdev, wvif->id,
+			     HIF_MIB_ID_DOT11_RTS_THRESHOLD, &arg, sizeof(arg));
+}
+
+#endif
diff --git a/drivers/staging/wfx/wfx.h b/drivers/staging/wfx/wfx.h
index bf9de11f8896..e23e86d4d7f0 100644
--- a/drivers/staging/wfx/wfx.h
+++ b/drivers/staging/wfx/wfx.h
@@ -10,6 +10,7 @@
 #ifndef WFX_H
 #define WFX_H
 
+#include <linux/version.h>
 #include <linux/completion.h>
 #include <net/mac80211.h>
 
@@ -18,6 +19,11 @@
 #include "hif_tx.h"
 #include "hif_api_general.h"
 
+#if (KERNEL_VERSION(4, 17, 0) > LINUX_VERSION_CODE)
+#define struct_size(p, member, n) \
+	(n * sizeof(*(p)->member) + __must_be_array((p)->member) + sizeof(*(p)))
+#endif
+
 struct hwbus_ops;
 
 struct wfx_dev {
-- 
2.20.1

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