rsi: handle station connection in AP mode

Station structures are maintained in driver with required
fields. When mac80211 callback sta_add is called, driver
iterates through list of connected stations to check available
index and assigns station id which is important for further
communication to that station. Then peer notify frame is send
to firmware to inform the firmware about new station connection.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 71 insertions, 7 deletions

diff --git a/drivers/net/wireless/rsi/rsi_91x_mac80211.c b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
index 6038a2fc9eda..b1c08491c754 100644
--- a/drivers/net/wireless/rsi/rsi_91x_mac80211.c
+++ b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
@@ -626,10 +626,12 @@ static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw,
 			rsi_send_rx_filter_frame(common, rx_filter_word);
 		}
 		rsi_inform_bss_status(common,
+				      STA_OPMODE,
 				      bss_conf->assoc,
 				      bss_conf->bssid,
 				      bss_conf->qos,
-				      bss_conf->aid);
+				      bss_conf->aid,
+				      NULL, 0);
 		adapter->ps_info.dtim_interval_duration = bss->dtim_period;
 		adapter->ps_info.listen_interval = conf->listen_interval;
 
@@ -1157,18 +1159,80 @@ static int rsi_mac80211_sta_add(struct ieee80211_hw *hw,
 {
 	struct rsi_hw *adapter = hw->priv;
 	struct rsi_common *common = adapter->priv;
+	bool sta_exist = false;
+	struct rsi_sta *rsta;
+
+	rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr);
 
 	mutex_lock(&common->mutex);
 
-	rsi_set_min_rate(hw, sta, common);
+	if (vif->type == NL80211_IFTYPE_AP) {
+		u8 cnt;
+		int sta_idx = -1;
+		int free_index = -1;
+
+		/* Check if max stations reached */
+		if (common->num_stations >= common->max_stations) {
+			rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n");
+			mutex_unlock(&common->mutex);
+			return -EOPNOTSUPP;
+		}
+		for (cnt = 0; cnt < common->max_stations; cnt++) {
+			rsta = &common->stations[cnt];
 
-	if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ||
-	    (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)) {
-		common->vif_info[0].sgi = true;
+			if (!rsta->sta) {
+				if (free_index < 0)
+					free_index = cnt;
+				continue;
+			}
+			if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
+				rsi_dbg(INFO_ZONE, "Station exists\n");
+				sta_idx = cnt;
+				sta_exist = true;
+				break;
+			}
+		}
+		if (!sta_exist) {
+			if (free_index >= 0)
+				sta_idx = free_index;
+		}
+		if (sta_idx < 0) {
+			rsi_dbg(ERR_ZONE,
+				"%s: Some problem reaching here...\n",
+				__func__);
+			return -EINVAL;
+		}
+		rsta = &common->stations[sta_idx];
+		rsta->sta = sta;
+		rsta->sta_id = sta_idx;
+		for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
+			rsta->start_tx_aggr[cnt] = false;
+		for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
+			rsta->seq_start[cnt] = 0;
+		if (!sta_exist) {
+			rsi_dbg(INFO_ZONE, "New Station\n");
+
+			/* Send peer notify to device */
+			rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
+			rsi_inform_bss_status(common, AP_OPMODE, 1, sta->addr,
+					      sta->wme, sta->aid, sta, sta_idx);
+
+			common->num_stations++;
+		}
 	}
 
-	if (sta->ht_cap.ht_supported)
-		ieee80211_start_tx_ba_session(sta, 0, 0);
+	if (vif->type == NL80211_IFTYPE_STATION) {
+		rsi_set_min_rate(hw, sta, common);
+		if (sta->ht_cap.ht_supported) {
+			common->vif_info[0].is_ht = true;
+			common->bitrate_mask[NL80211_BAND_2GHZ] =
+					sta->supp_rates[NL80211_BAND_2GHZ];
+			if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ||
+			    (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
+				common->vif_info[0].sgi = true;
+			ieee80211_start_tx_ba_session(sta, 0, 0);
+		}
+	}
 
 	mutex_unlock(&common->mutex);