staging: wilc1000: refactor code to use cookie information

Make use of cookie information to pass to wpa_s and handle cookie value
received in the cfg80211_ops callbacks.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

4 files changed, 53 insertions, 85 deletions

diff --git a/drivers/staging/wilc1000/host_interface.c b/drivers/staging/wilc1000/host_interface.c
index 97bf747295be..115b6f25d994 100644
--- a/drivers/staging/wilc1000/host_interface.c
+++ b/drivers/staging/wilc1000/host_interface.c
@@ -920,40 +920,22 @@ static int handle_remain_on_chan(struct wilc_vif *vif,
 	struct wid wid;
 	struct host_if_drv *hif_drv = vif->hif_drv;
 
-	if (!hif_drv->remain_on_ch_pending) {
-		hif_drv->remain_on_ch.arg = hif_remain_ch->arg;
-		hif_drv->remain_on_ch.expired = hif_remain_ch->expired;
-		hif_drv->remain_on_ch.ready = hif_remain_ch->ready;
-		hif_drv->remain_on_ch.ch = hif_remain_ch->ch;
-		hif_drv->remain_on_ch.id = hif_remain_ch->id;
-	} else {
-		hif_remain_ch->ch = hif_drv->remain_on_ch.ch;
-	}
+	if (hif_drv->usr_scan_req.scan_result)
+		return -EBUSY;
 
-	if (hif_drv->usr_scan_req.scan_result) {
-		hif_drv->remain_on_ch_pending = 1;
-		result = -EBUSY;
-		goto error;
-	}
-	if (hif_drv->hif_state == HOST_IF_WAITING_CONN_RESP) {
-		result = -EBUSY;
-		goto error;
-	}
+	if (hif_drv->hif_state == HOST_IF_WAITING_CONN_RESP)
+		return -EBUSY;
 
-	if (vif->obtaining_ip || vif->connecting) {
-		result = -EBUSY;
-		goto error;
-	}
+	if (vif->obtaining_ip || vif->connecting)
+		return -EBUSY;
 
 	remain_on_chan_flag = true;
 	wid.id = WID_REMAIN_ON_CHAN;
 	wid.type = WID_STR;
 	wid.size = 2;
 	wid.val = kmalloc(wid.size, GFP_KERNEL);
-	if (!wid.val) {
-		result = -ENOMEM;
-		goto error;
-	}
+	if (!wid.val)
+		return -ENOMEM;
 
 	wid.val[0] = remain_on_chan_flag;
 	wid.val[1] = (s8)hif_remain_ch->ch;
@@ -961,21 +943,16 @@ static int handle_remain_on_chan(struct wilc_vif *vif,
 	result = wilc_send_config_pkt(vif, WILC_SET_CFG, &wid, 1,
 				      wilc_get_vif_idx(vif));
 	kfree(wid.val);
-	if (result != 0)
-		netdev_err(vif->ndev, "Failed to set remain on channel\n");
+	if (result)
+		return -EBUSY;
 
-error:
+	hif_drv->remain_on_ch.arg = hif_remain_ch->arg;
+	hif_drv->remain_on_ch.expired = hif_remain_ch->expired;
+	hif_drv->remain_on_ch.ch = hif_remain_ch->ch;
+	hif_drv->remain_on_ch.cookie = hif_remain_ch->cookie;
 	hif_drv->remain_on_ch_timer_vif = vif;
-	mod_timer(&hif_drv->remain_on_ch_timer,
-		  jiffies + msecs_to_jiffies(hif_remain_ch->duration));
-
-	if (hif_drv->remain_on_ch.ready)
-		hif_drv->remain_on_ch.ready(hif_drv->remain_on_ch.arg);
 
-	if (hif_drv->remain_on_ch_pending)
-		hif_drv->remain_on_ch_pending = 0;
-
-	return result;
+	return 0;
 }
 
 static void handle_listen_state_expired(struct work_struct *work)
@@ -1012,7 +989,7 @@ static void handle_listen_state_expired(struct work_struct *work)
 
 		if (hif_drv->remain_on_ch.expired) {
 			hif_drv->remain_on_ch.expired(hif_drv->remain_on_ch.arg,
-						      hif_remain_ch->id);
+						      hif_remain_ch->cookie);
 		}
 	} else {
 		netdev_dbg(vif->ndev, "Not in listen state\n");
@@ -1036,7 +1013,7 @@ static void listen_timer_cb(struct timer_list *t)
 	if (IS_ERR(msg))
 		return;
 
-	msg->body.remain_on_ch.id = vif->hif_drv->remain_on_ch.id;
+	msg->body.remain_on_ch.cookie = vif->hif_drv->remain_on_ch.cookie;
 
 	result = wilc_enqueue_work(msg);
 	if (result) {
@@ -1102,9 +1079,6 @@ static void handle_scan_complete(struct work_struct *work)
 
 	handle_scan_done(msg->vif, SCAN_EVENT_DONE);
 
-	if (msg->vif->hif_drv->remain_on_ch_pending)
-		handle_remain_on_chan(msg->vif,
-				      &msg->vif->hif_drv->remain_on_ch);
 	kfree(msg);
 }
 
@@ -1842,10 +1816,9 @@ void wilc_scan_complete_received(struct wilc *wilc, u8 *buffer, u32 length)
 	}
 }
 
-int wilc_remain_on_channel(struct wilc_vif *vif, u32 session_id,
+int wilc_remain_on_channel(struct wilc_vif *vif, u64 cookie,
 			   u32 duration, u16 chan,
-			   void (*expired)(void *, u32),
-			   void (*ready)(void *),
+			   void (*expired)(void *, u64),
 			   void *user_arg)
 {
 	struct remain_ch roc;
@@ -1853,10 +1826,9 @@ int wilc_remain_on_channel(struct wilc_vif *vif, u32 session_id,
 
 	roc.ch = chan;
 	roc.expired = expired;
-	roc.ready = ready;
 	roc.arg = user_arg;
 	roc.duration = duration;
-	roc.id = session_id;
+	roc.cookie = cookie;
 	result = handle_remain_on_chan(vif, &roc);
 	if (result)
 		netdev_err(vif->ndev, "%s: failed to set remain on channel\n",
@@ -1865,7 +1837,7 @@ int wilc_remain_on_channel(struct wilc_vif *vif, u32 session_id,
 	return result;
 }
 
-int wilc_listen_state_expired(struct wilc_vif *vif, u32 session_id)
+int wilc_listen_state_expired(struct wilc_vif *vif, u64 cookie)
 {
 	int result;
 	struct host_if_msg *msg;
@@ -1882,7 +1854,7 @@ int wilc_listen_state_expired(struct wilc_vif *vif, u32 session_id)
 	if (IS_ERR(msg))
 		return PTR_ERR(msg);
 
-	msg->body.remain_on_ch.id = session_id;
+	msg->body.remain_on_ch.cookie = cookie;
 
 	result = wilc_enqueue_work(msg);
 	if (result) {
diff --git a/drivers/staging/wilc1000/host_interface.h b/drivers/staging/wilc1000/host_interface.h
index 0feb63fb478e..994e641ef491 100644
--- a/drivers/staging/wilc1000/host_interface.h
+++ b/drivers/staging/wilc1000/host_interface.h
@@ -140,10 +140,9 @@ struct wilc_conn_info {
 struct remain_ch {
 	u16 ch;
 	u32 duration;
-	void (*expired)(void *priv, u32 session_id);
-	void (*ready)(void *priv);
+	void (*expired)(void *priv, u64 cookie);
 	void *arg;
-	u32 id;
+	u32 cookie;
 };
 
 struct wilc;
@@ -151,7 +150,6 @@ struct host_if_drv {
 	struct user_scan_req usr_scan_req;
 	struct wilc_conn_info conn_info;
 	struct remain_ch remain_on_ch;
-	u8 remain_on_ch_pending;
 	u64 p2p_timeout;
 
 	enum host_if_state hif_state;
@@ -227,12 +225,11 @@ int wilc_edit_station(struct wilc_vif *vif, const u8 *mac,
 int wilc_set_power_mgmt(struct wilc_vif *vif, bool enabled, u32 timeout);
 int wilc_setup_multicast_filter(struct wilc_vif *vif, u32 enabled, u32 count,
 				u8 *mc_list);
-int wilc_remain_on_channel(struct wilc_vif *vif, u32 session_id,
+int wilc_remain_on_channel(struct wilc_vif *vif, u64 cookie,
 			   u32 duration, u16 chan,
-			   void (*expired)(void *, u32),
-			   void (*ready)(void *),
+			   void (*expired)(void *, u64),
 			   void *user_arg);
-int wilc_listen_state_expired(struct wilc_vif *vif, u32 session_id);
+int wilc_listen_state_expired(struct wilc_vif *vif, u64 cookie);
 void wilc_frame_register(struct wilc_vif *vif, u16 frame_type, bool reg);
 int wilc_set_wfi_drv_handler(struct wilc_vif *vif, int index, u8 mode,
 			     u8 ifc_id);
diff --git a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
index 08b60ddd9f8d..f719b74cf15d 100644
--- a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
+++ b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
@@ -1119,27 +1119,12 @@ static void wilc_wfi_mgmt_tx_complete(void *priv, int status)
 	kfree(pv_data);
 }
 
-static void wilc_wfi_remain_on_channel_ready(void *priv_data)
-{
-	struct wilc_priv *priv;
-
-	priv = priv_data;
-
-	priv->p2p_listen_state = true;
-
-	cfg80211_ready_on_channel(priv->wdev,
-				  priv->remain_on_ch_params.listen_cookie,
-				  priv->remain_on_ch_params.listen_ch,
-				  priv->remain_on_ch_params.listen_duration,
-				  GFP_KERNEL);
-}
-
-static void wilc_wfi_remain_on_channel_expired(void *data, u32 session_id)
+static void wilc_wfi_remain_on_channel_expired(void *data, u64 cookie)
 {
 	struct wilc_priv *priv = data;
 	struct wilc_wfi_p2p_listen_params *params = &priv->remain_on_ch_params;
 
-	if (session_id != params->listen_session_id)
+	if (cookie != params->listen_cookie)
 		return;
 
 	priv->p2p_listen_state = false;
@@ -1156,24 +1141,36 @@ static int remain_on_channel(struct wiphy *wiphy,
 	int ret = 0;
 	struct wilc_priv *priv = wiphy_priv(wiphy);
 	struct wilc_vif *vif = netdev_priv(priv->dev);
+	u64 id;
 
 	if (wdev->iftype == NL80211_IFTYPE_AP) {
 		netdev_dbg(vif->ndev, "Required while in AP mode\n");
 		return ret;
 	}
 
+	id = ++priv->inc_roc_cookie;
+	if (id == 0)
+		id = ++priv->inc_roc_cookie;
+
+	ret = wilc_remain_on_channel(vif, id, duration, chan->hw_value,
+				     wilc_wfi_remain_on_channel_expired,
+				     (void *)priv);
+	if (ret)
+		return ret;
+
 	curr_channel = chan->hw_value;
 
 	priv->remain_on_ch_params.listen_ch = chan;
-	priv->remain_on_ch_params.listen_cookie = *cookie;
+	priv->remain_on_ch_params.listen_cookie = id;
+	*cookie = id;
+	priv->p2p_listen_state = true;
 	priv->remain_on_ch_params.listen_duration = duration;
-	priv->remain_on_ch_params.listen_session_id++;
 
-	return wilc_remain_on_channel(vif,
-				priv->remain_on_ch_params.listen_session_id,
-				duration, chan->hw_value,
-				wilc_wfi_remain_on_channel_expired,
-				wilc_wfi_remain_on_channel_ready, (void *)priv);
+	cfg80211_ready_on_channel(wdev, *cookie, chan, duration, GFP_KERNEL);
+	mod_timer(&vif->hif_drv->remain_on_ch_timer,
+		  jiffies + msecs_to_jiffies(duration));
+
+	return ret;
 }
 
 static int cancel_remain_on_channel(struct wiphy *wiphy,
@@ -1183,8 +1180,10 @@ static int cancel_remain_on_channel(struct wiphy *wiphy,
 	struct wilc_priv *priv = wiphy_priv(wiphy);
 	struct wilc_vif *vif = netdev_priv(priv->dev);
 
-	return wilc_listen_state_expired(vif,
-			priv->remain_on_ch_params.listen_session_id);
+	if (cookie != priv->remain_on_ch_params.listen_cookie)
+		return -ENOENT;
+
+	return wilc_listen_state_expired(vif, cookie);
 }
 
 static void wilc_wfi_cfg_tx_vendor_spec(struct wilc_priv *priv,
diff --git a/drivers/staging/wilc1000/wilc_wfi_netdevice.h b/drivers/staging/wilc1000/wilc_wfi_netdevice.h
index cc06ef952030..a06b0c019388 100644
--- a/drivers/staging/wilc1000/wilc_wfi_netdevice.h
+++ b/drivers/staging/wilc1000/wilc_wfi_netdevice.h
@@ -65,7 +65,6 @@ struct wilc_wfi_p2p_listen_params {
 	struct ieee80211_channel *listen_ch;
 	u32 listen_duration;
 	u64 listen_cookie;
-	u32 listen_session_id;
 };
 
 struct wilc_p2p_var {
@@ -161,6 +160,7 @@ struct wilc_priv {
 	struct ieee80211_rate bitrates[ARRAY_SIZE(wilc_bitrates)];
 	struct ieee80211_supported_band band;
 	u32 cipher_suites[ARRAY_SIZE(wilc_cipher_suites)];
+	u64 inc_roc_cookie;
 };
 
 struct frame_reg {