staging: wfx: simplify hif_set_edca_queue_params() usage

The struct hif_req_edca_queue_params comes from hardware API. It is not
intended to be manipulated in upper layers of the driver.

So, this patch:
  1. relocate the handling of this struct in hif_set_edca_queue_params()
     (the low level function)
  2. replace it in wfx_vif by the mac80211 equivalent: struct
     ieee80211_tx_queue_params
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20191217161318.31402-44-Jerome.Pouiller@silabs.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wfx/hif_tx.c

@@ -340,19 +340,25 @@ int hif_remove_key(struct wfx_dev *wdev, int idx)
 	return ret;
 }
 
-int hif_set_edca_queue_params(struct wfx_vif *wvif,
-			      const struct hif_req_edca_queue_params *arg)
+int hif_set_edca_queue_params(struct wfx_vif *wvif, u16 queue,
+			      const struct ieee80211_tx_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);
+	WARN_ON(arg->aifs > 255);
+	body->aifsn = arg->aifs;
+	body->cw_min = cpu_to_le16(arg->cw_min);
+	body->cw_max = cpu_to_le16(arg->cw_max);
+	body->tx_op_limit = cpu_to_le16(arg->txop * USEC_PER_TXOP);
+	body->queue_id = 3 - queue;
+	// API 2.0 has changed queue IDs values
+	if (wfx_api_older_than(wvif->wdev, 2, 0) && queue == IEEE80211_AC_BE)
+		body->queue_id = HIF_QUEUE_ID_BACKGROUND;
+	if (wfx_api_older_than(wvif->wdev, 2, 0) && queue == IEEE80211_AC_BK)
+		body->queue_id = HIF_QUEUE_ID_BESTEFFORT;
 	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_EDCA_QUEUE_PARAMS,
 			sizeof(*body));
 	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);

drivers/staging/wfx/hif_tx.h

@@ -12,6 +12,7 @@
 
 #include "hif_api_cmd.h"
 
+struct ieee80211_tx_queue_params;
 struct wfx_dev;
 struct wfx_vif;
 
@@ -52,8 +53,8 @@ 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_set_edca_queue_params(struct wfx_vif *wvif, u16 queue,
+			      const struct ieee80211_tx_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);

drivers/staging/wfx/queue.c

@@ -443,7 +443,7 @@ static int wfx_get_prio_queue(struct wfx_vif *wvif,
 {
 	static const int urgent = BIT(WFX_LINK_ID_AFTER_DTIM) |
 		BIT(WFX_LINK_ID_UAPSD);
-	struct hif_req_edca_queue_params *edca;
+	const struct ieee80211_tx_queue_params *edca;
 	unsigned int score, best = -1;
 	int winner = -1;
 	int i;
@@ -458,7 +458,7 @@ static int wfx_get_prio_queue(struct wfx_vif *wvif,
 		if (!queued)
 			continue;
 		*total += queued;
-		score = ((edca->aifsn + edca->cw_min) << 16) +
+		score = ((edca->aifs + edca->cw_min) << 16) +
 			((edca->cw_max - edca->cw_min) *
 			 (get_random_int() & 0xFFFF));
 		if (score < best && (winner < 0 || i != 3)) {
@@ -595,7 +595,7 @@ struct hif_msg *wfx_tx_queues_get(struct wfx_dev *wdev)
 		wvif->pspoll_mask &= ~BIT(tx_priv->raw_link_id);
 
 		/* allow bursting if txop is set */
-		if (wvif->edca_params[queue_num].tx_op_limit)
+		if (wvif->edca_params[queue_num].txop)
 			burst = (int)wfx_tx_queue_get_num_queued(queue, tx_allowed_mask) + 1;
 		else
 			burst = 1;

drivers/staging/wfx/sta.c

@@ -17,7 +17,6 @@
 #include "hif_tx.h"
 #include "hif_tx_mib.h"
 
-#define TXOP_UNIT 32
 #define HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES 2
 
 static u32 wfx_rate_mask_to_hw(struct wfx_dev *wdev, u32 rates)
@@ -322,26 +321,13 @@ int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 {
 	struct wfx_dev *wdev = hw->priv;
 	struct wfx_vif *wvif = (struct wfx_vif *) vif->drv_priv;
-	struct hif_req_edca_queue_params *edca;
 
 	WARN_ON(queue >= hw->queues);
 
 	mutex_lock(&wdev->conf_mutex);
 	assign_bit(queue, &wvif->uapsd_mask, params->uapsd);
-	edca = &wvif->edca_params[queue];
-	edca->aifsn = params->aifs;
-	edca->cw_min = params->cw_min;
-	edca->cw_max = params->cw_max;
-	edca->tx_op_limit = params->txop * TXOP_UNIT;
-	edca->allowed_medium_time = 0;
-	edca->queue_id = 3 - queue;
-	// API 2.0 has changed queue IDs values
-	if (wfx_api_older_than(wdev, 2, 0) && queue == IEEE80211_AC_BE)
-		edca->queue_id = HIF_QUEUE_ID_BACKGROUND;
-	if (wfx_api_older_than(wdev, 2, 0) && queue == IEEE80211_AC_BK)
-		edca->queue_id = HIF_QUEUE_ID_BESTEFFORT;
-	hif_set_edca_queue_params(wvif, edca);
-
+	memcpy(&wvif->edca_params[queue], params, sizeof(*params));
+	hif_set_edca_queue_params(wvif, queue, params);
 	if (wvif->vif->type == NL80211_IFTYPE_STATION) {
 		hif_set_uapsd_info(wvif, wvif->uapsd_mask);
 		if (wvif->setbssparams_done && wvif->state == WFX_STATE_STA)

drivers/staging/wfx/wfx.h

@@ -26,6 +26,8 @@
 #include "hif_tx.h"
 #include "hif_api_general.h"
 
+#define USEC_PER_TXOP 32 // see struct ieee80211_tx_queue_params
+
 struct hwbus_ops;
 
 struct wfx_dev {
@@ -114,7 +116,7 @@ struct wfx_vif {
 	bool			setbssparams_done;
 	struct wfx_ht_info	ht_info;
 	unsigned long		uapsd_mask;
-	struct hif_req_edca_queue_params edca_params[IEEE80211_NUM_ACS];
+	struct ieee80211_tx_queue_params edca_params[IEEE80211_NUM_ACS];
 	struct hif_req_set_bss_params bss_params;
 	struct work_struct	bss_params_work;
 	struct work_struct	set_cts_work;