mwifiex: delete peer station's RA list upon deauthentication

Avinash Patil · linvjw · commit 9817fffbf04c · 2014-12-05T14:15:25.000-05:00
This patch adds support to delete peer station's RA lists
upon station deautheticate event on AP interface. Patch also
decrements TX pending count upon removing packets from RA list.

Signed-off-by: Avinash Patil &lt;patila@marvell.com&gt;
Signed-off-by: Cathy Luo &lt;cluo@marvell.com&gt;
Signed-off-by: John W. Linville &lt;linville@tuxdriver.com&gt;
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
@@ -975,6 +975,8 @@ int mwifiex_handle_uap_rx_forward(struct mwifiex_private *priv,
 int mwifiex_process_sta_event(struct mwifiex_private *);
 int mwifiex_process_uap_event(struct mwifiex_private *);
 void mwifiex_delete_all_station_list(struct mwifiex_private *priv);
+void mwifiex_wmm_del_peer_ra_list(struct mwifiex_private *priv,
+				  const u8 *ra_addr);
 void *mwifiex_process_sta_txpd(struct mwifiex_private *, struct sk_buff *skb);
 void *mwifiex_process_uap_txpd(struct mwifiex_private *, struct sk_buff *skb);
 int mwifiex_sta_init_cmd(struct mwifiex_private *, u8 first_sta);
diff --git a/drivers/net/wireless/mwifiex/uap_event.c b/drivers/net/wireless/mwifiex/uap_event.c
@@ -110,6 +110,7 @@ int mwifiex_process_uap_event(struct mwifiex_private *priv)
 			mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, deauth_mac);
 			mwifiex_del_tx_ba_stream_tbl_by_ra(priv, deauth_mac);
 		}
+		mwifiex_wmm_del_peer_ra_list(priv, deauth_mac);
 		mwifiex_del_sta_entry(priv, deauth_mac);
 		break;
 	case EVENT_UAP_BSS_IDLE:
diff --git a/drivers/net/wireless/mwifiex/wmm.c b/drivers/net/wireless/mwifiex/wmm.c
@@ -610,6 +610,32 @@ mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid,
 	return mwifiex_wmm_get_ralist_node(priv, tid, ra_addr);
 }
 
+/*
+ * This function deletes RA list nodes for given mac for all TIDs.
+ * Function also decrements TX pending count accordingly.
+ */
+void
+mwifiex_wmm_del_peer_ra_list(struct mwifiex_private *priv, const u8 *ra_addr)
+{
+	struct mwifiex_ra_list_tbl *ra_list;
+	unsigned long flags;
+	int i;
+
+	spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
+
+	for (i = 0; i < MAX_NUM_TID; ++i) {
+		ra_list = mwifiex_wmm_get_ralist_node(priv, i, ra_addr);
+
+		if (!ra_list)
+			continue;
+		mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list);
+		atomic_sub(ra_list->total_pkt_count, &priv->wmm.tx_pkts_queued);
+		list_del(&ra_list->list);
+		kfree(ra_list);
+	}
+	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
+}
+
 /*
  * This function checks if a particular RA list node exists in a given TID
  * table index.

Original file line number	Diff line number	Diff line change
`@@ -110,6 +110,7 @@ int mwifiex_process_uap_event(struct mwifiex_private *priv)`
`110`	`110`	`mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, deauth_mac);`
`111`	`111`	`mwifiex_del_tx_ba_stream_tbl_by_ra(priv, deauth_mac);`
`112`	`112`	`}`
	`113`	`+ mwifiex_wmm_del_peer_ra_list(priv, deauth_mac);`
`113`	`114`	`mwifiex_del_sta_entry(priv, deauth_mac);`
`114`	`115`	`break;`
`115`	`116`	`case EVENT_UAP_BSS_IDLE:`