brcmsmac: restructure info->control.sta handling as it is goning to be removed soon.

brcmsmac uses info->control.sta while doing ampdu aggregation. This patch
changes the usage of the structure info->control.sta, as it is going to be
removed soon from struct ieee80211_tx_info. This patch is a pre-requisit in
order to add transmission power control (TPC) to the mac80211 subsystem.

Suggested-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 7 insertions, 8 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/ampdu.c b/drivers/net/wireless/brcm80211/brcmsmac/ampdu.c
index 01b190a25d94..be5bcfb9153b 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/ampdu.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/ampdu.c
@@ -663,9 +663,6 @@ brcms_c_sendampdu(struct ampdu_info *ampdu, struct brcms_txq_info *qi,
                 /* patch the first MPDU */
                 if (count == 1) {
                         u8 plcp0, plcp3, is40, sgi;
-                        struct ieee80211_sta *sta;
-
-                        sta = tx_info->control.sta;
 
                         if (rr) {
                                 plcp0 = plcp[0];
@@ -1195,8 +1192,8 @@ static bool cb_del_ampdu_pkt(struct sk_buff *mpdu, void *arg_a)
         bool rc;
 
         rc = tx_info->flags & IEEE80211_TX_CTL_AMPDU ? true : false;
-        rc = rc && (tx_info->control.sta == NULL || ampdu_pars->sta == NULL ||
-                    tx_info->control.sta == ampdu_pars->sta);
+        rc = rc && (tx_info->rate_driver_data[0] == NULL || ampdu_pars->sta == NULL ||
+                    tx_info->rate_driver_data[0] == ampdu_pars->sta);
         rc = rc && ((u8)(mpdu->priority) == ampdu_pars->tid);
         return rc;
 }
@@ -1210,8 +1207,8 @@ static void dma_cb_fn_ampdu(void *txi, void *arg_a)
         struct ieee80211_tx_info *tx_info = (struct ieee80211_tx_info *)txi;
 
         if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) &&
-            (tx_info->control.sta == sta || sta == NULL))
-                tx_info->control.sta = NULL;
+            (tx_info->rate_driver_data[0] == sta || sta == NULL))
+                tx_info->rate_driver_data[0] = NULL;
 }
 
 /*
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
index 2b57f57a7927..9e79d47e077f 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
@@ -267,6 +267,7 @@ static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 {
         struct brcms_info *wl = hw->priv;
+        struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 
         spin_lock_bh(&wl->lock);
         if (!wl->pub->up) {
@@ -275,6 +276,7 @@ static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
                 goto done;
         }
         brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
+        tx_info->rate_driver_data[0] = tx_info->control.sta;
  done:
         spin_unlock_bh(&wl->lock);
 }
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c
index d39f7d041e0b..f36dabcea3cd 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/main.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c
@@ -893,7 +893,7 @@ brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs)
         tx_info = IEEE80211_SKB_CB(p);
         h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
 
-        if (tx_info->control.sta)
+        if (tx_info->rate_driver_data[0])
                 scb = &wlc->pri_scb;
 
         if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {