mac80211: A-MPDU Rx add MLME structures

This patch adds the needed structures to describe the Rx aggregation MLME per STA
new:
 - struct tid_ampdu_rx: TID aggregation information (Rx)
 - struct sta_ampdu_mlme: MLME aggregation information for STA
changed:
 - struct sta_info: ampdu_mlme added to describe A-MPDU MLME per STA,
		    and timer_to_tid added to map timer id into TID

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index e1a4ac1d48d7fa1eadda6389e516bfdceaa82b8b..96fe3ed950385f652e83f936bc53e7c10b91bb88 100644 (file)
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -31,6 +31,51 @@
 #define WLAN_STA_WME BIT(9)
 #define WLAN_STA_WDS BIT(27)
 
+#define STA_TID_NUM 16
+#define ADDBA_RESP_INTERVAL HZ
+
+#define HT_AGG_STATE_INITIATOR_SHIFT   (4)
+
+#define HT_AGG_STATE_REQ_STOP_BA_MSK   BIT(3)
+
+#define HT_AGG_STATE_IDLE              (0x0)
+#define HT_AGG_STATE_OPERATIONAL       (0x7)
+
+/**
+ * struct tid_ampdu_rx - TID aggregation information (Rx).
+ *
+ * @state: TID's state in session state machine.
+ * @dialog_token: dialog token for aggregation session
+ * @ssn: Starting Sequence Number expected to be aggregated.
+ * @buf_size: buffer size for incoming A-MPDUs
+ * @timeout: reset timer value.
+ * @head_seq_num: head sequence number in reordering buffer.
+ * @stored_mpdu_num: number of MPDUs in reordering buffer
+ * @reorder_buf: buffer to reorder incoming aggregated MPDUs
+ * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
+ */
+struct tid_ampdu_rx {
+       u8 state;
+       u8 dialog_token;
+       u16 ssn;
+       u16 buf_size;
+       u16 timeout;
+       u16 head_seq_num;
+       u16 stored_mpdu_num;
+       struct sk_buff **reorder_buf;
+       struct timer_list session_timer;
+};
+
+/**
+ * struct sta_ampdu_mlme - STA aggregation information.
+ *
+ * @tid_agg_info_rx: aggregation info for Rx per TID
+ * @ampdu_rx: for locking sections in aggregation Rx flow
+ */
+struct sta_ampdu_mlme {
+       struct tid_ampdu_rx tid_rx[STA_TID_NUM];
+       spinlock_t ampdu_rx;
+};
 
 struct sta_info {
        struct kref kref;
@@ -101,6 +146,8 @@ struct sta_info {
 
        struct ieee80211_ht_info ht_info; /* 802.11n HT capabilities
                                             of this STA */
+       struct sta_ampdu_mlme ampdu_mlme;
+       u8 timer_to_tid[STA_TID_NUM];   /* convert timer id to tid */
 
 #ifdef CONFIG_MAC80211_DEBUGFS
        struct sta_info_debugfsdentries {