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Date:   Wed, 15 Jan 2020 13:55:08 +0000
From:   Jérôme 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>,
        Jérôme Pouiller <Jerome.Pouiller@...abs.com>
Subject: [PATCH v2 45/65] staging: wfx: remove handling of "early_data"

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

It seems that purpose of "early_data" was to prevent sending data to
mac80211 before station was completely associated. It is a useless
precaution.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
---
 drivers/staging/wfx/data_rx.c | 17 +----------------
 drivers/staging/wfx/data_tx.c |  3 ---
 drivers/staging/wfx/data_tx.h |  1 -
 drivers/staging/wfx/sta.c     |  3 ---
 4 files changed, 1 insertion(+), 23 deletions(-)

diff --git a/drivers/staging/wfx/data_rx.c b/drivers/staging/wfx/data_rx.c
index 0ab71c911f84..e26bc665b2b3 100644
--- a/drivers/staging/wfx/data_rx.c
+++ b/drivers/staging/wfx/data_rx.c
@@ -108,7 +108,6 @@ void wfx_rx_cb(struct wfx_vif *wvif,
 	struct ieee80211_hdr *frame = (struct ieee80211_hdr *)skb->data;
 	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
 	struct wfx_link_entry *entry = NULL;
-	bool early_data = false;
 
 	memset(hdr, 0, sizeof(*hdr));
 
@@ -121,9 +120,6 @@ void wfx_rx_cb(struct wfx_vif *wvif,
 	if (link_id && link_id <= WFX_MAX_STA_IN_AP_MODE) {
 		entry = &wvif->link_id_db[link_id - 1];
 		entry->timestamp = jiffies;
-		if (entry->status == WFX_LINK_SOFT &&
-		    ieee80211_is_data(frame->frame_control))
-			early_data = true;
 	}
 
 	if (arg->status == HIF_STATUS_MICFAILURE)
@@ -181,18 +177,7 @@ void wfx_rx_cb(struct wfx_vif *wvif,
 			schedule_work(&wvif->update_filtering_work);
 		}
 	}
-
-	if (early_data) {
-		spin_lock_bh(&wvif->ps_state_lock);
-		/* Double-check status with lock held */
-		if (entry->status == WFX_LINK_SOFT)
-			skb_queue_tail(&entry->rx_queue, skb);
-		else
-			ieee80211_rx_irqsafe(wvif->wdev->hw, skb);
-		spin_unlock_bh(&wvif->ps_state_lock);
-	} else {
-		ieee80211_rx_irqsafe(wvif->wdev->hw, skb);
-	}
+	ieee80211_rx_irqsafe(wvif->wdev->hw, skb);
 
 	return;
 
diff --git a/drivers/staging/wfx/data_tx.c b/drivers/staging/wfx/data_tx.c
index 704ebfe1cd05..e669fc4485e6 100644
--- a/drivers/staging/wfx/data_tx.c
+++ b/drivers/staging/wfx/data_tx.c
@@ -292,7 +292,6 @@ static int wfx_alloc_link_id(struct wfx_vif *wvif, const u8 *mac)
 		entry->status = WFX_LINK_RESERVE;
 		ether_addr_copy(entry->mac, mac);
 		memset(&entry->buffered, 0, WFX_MAX_TID);
-		skb_queue_head_init(&entry->rx_queue);
 		wfx_tx_lock(wvif->wdev);
 
 		if (!schedule_work(&wvif->link_id_work))
@@ -400,8 +399,6 @@ void wfx_link_id_gc_work(struct work_struct *work)
 				next_gc = min_t(unsigned long, next_gc, ttl);
 			}
 		}
-		if (need_reset)
-			skb_queue_purge(&wvif->link_id_db[i].rx_queue);
 	}
 	spin_unlock_bh(&wvif->ps_state_lock);
 	if (next_gc != -1)
diff --git a/drivers/staging/wfx/data_tx.h b/drivers/staging/wfx/data_tx.h
index 078d0cfc521a..54738c2e3eac 100644
--- a/drivers/staging/wfx/data_tx.h
+++ b/drivers/staging/wfx/data_tx.h
@@ -34,7 +34,6 @@ struct wfx_link_entry {
 	u8			mac[ETH_ALEN];
 	u8			old_mac[ETH_ALEN];
 	u8			buffered[WFX_MAX_TID];
-	struct sk_buff_head	rx_queue;
 };
 
 struct tx_policy {
diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index 6a43decd5ae6..4a44d72f0db1 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -571,7 +571,6 @@ int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	struct wfx_vif *wvif = (struct wfx_vif *) vif->drv_priv;
 	struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *) &sta->drv_priv;
 	struct wfx_link_entry *entry;
-	struct sk_buff *skb;
 
 	if (wvif->vif->type != NL80211_IFTYPE_AP)
 		return 0;
@@ -589,8 +588,6 @@ int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 					IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
 		wvif->sta_asleep_mask |= BIT(sta_priv->link_id);
 	entry->status = WFX_LINK_HARD;
-	while ((skb = skb_dequeue(&entry->rx_queue)))
-		ieee80211_rx_irqsafe(wdev->hw, skb);
 	spin_unlock_bh(&wvif->ps_state_lock);
 	return 0;
 }
-- 
2.25.0

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