rt2800: identify station based on status WCID

Add framework to identify sta based on tx status WCID. This is currently
not used, will start be utilized in the future patch.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 8223a15..46405cc 100644 (file)
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -855,11 +855,13 @@ EXPORT_SYMBOL_GPL(rt2800_process_rxwi);
 void rt2800_txdone_entry(struct queue_entry *entry, u32 status, __le32 *txwi)
 {
        struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
+       struct rt2800_drv_data *drv_data = rt2x00dev->drv_data;
        struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
        struct txdone_entry_desc txdesc;
        u32 word;
        u16 mcs, real_mcs;
        int aggr, ampdu;
+       int wcid;
 
        /*
         * Obtain the status about this packet.
@@ -872,6 +874,7 @@ void rt2800_txdone_entry(struct queue_entry *entry, u32 status, __le32 *txwi)
 
        real_mcs = rt2x00_get_field32(status, TX_STA_FIFO_MCS);
        aggr = rt2x00_get_field32(status, TX_STA_FIFO_TX_AGGRE);
+       wcid = rt2x00_get_field32(status, TX_STA_FIFO_WCID);
 
        /*
         * If a frame was meant to be sent as a single non-aggregated MPDU
@@ -1468,6 +1471,7 @@ int rt2800_sta_add(struct rt2x00_dev *rt2x00dev, struct ieee80211_vif *vif,
                return 0;
 
        __set_bit(wcid - WCID_START, drv_data->sta_ids);
+       drv_data->wcid_to_sta[wcid - WCID_START] = sta;
 
        /*
         * Clean up WCID attributes and write STA address to the device.
@@ -1498,6 +1502,7 @@ int rt2800_sta_remove(struct rt2x00_dev *rt2x00dev, struct ieee80211_sta *sta)
         * get renewed when the WCID is reused.
         */
        rt2800_config_wcid(rt2x00dev, NULL, wcid);
+       drv_data->wcid_to_sta[wcid - WCID_START] = NULL;
        __clear_bit(wcid - WCID_START, drv_data->sta_ids);
 
        return 0;

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
index 8e1ae13..6811d67 100644 (file)
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
@@ -41,6 +41,7 @@ struct rt2800_drv_data {
        unsigned int tbtt_tick;
        unsigned int ampdu_factor_cnt[4];
        DECLARE_BITMAP(sta_ids, STA_IDS_SIZE);
+       struct ieee80211_sta *wcid_to_sta[STA_IDS_SIZE];
 };
 
 struct rt2800_ops {

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00queue.h b/drivers/net/wireless/ralink/rt2x00/rt2x00queue.h
index 22d1881..9b297fc 100644 (file)
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00queue.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00queue.h
@@ -102,7 +102,7 @@ enum skb_frame_desc_flags {
  *     of the scope of the skb->data pointer.
  * @iv: IV/EIV data used during encryption/decryption.
  * @skb_dma: (PCI-only) the DMA address associated with the sk buffer.
- * @entry: The entry to which this sk buffer belongs.
+ * @sta: The station where sk buffer was sent.
  */
 struct skb_frame_desc {
        u8 flags;
@@ -116,6 +116,7 @@ struct skb_frame_desc {
        __le32 iv[2];
 
        dma_addr_t skb_dma;
+       struct ieee80211_sta *sta;
 };
 
 /**