These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 118 insertions, 57 deletions

diff --git a/kernel/net/mac80211/sta_info.c b/kernel/net/mac80211/sta_info.c
index 2880f2ae9..f91d18732 100644
--- a/kernel/net/mac80211/sta_info.c
+++ b/kernel/net/mac80211/sta_info.c
@@ -68,9 +68,10 @@ static const struct rhashtable_params sta_rht_params = {
 	.nelem_hint = 3, /* start small */
 	.automatic_shrinking = true,
 	.head_offset = offsetof(struct sta_info, hash_node),
-	.key_offset = offsetof(struct sta_info, sta.addr),
+	.key_offset = offsetof(struct sta_info, addr),
 	.key_len = ETH_ALEN,
 	.hashfn = sta_addr_hash,
+	.max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE,
 };
 
 /* Caller must hold local->sta_mtx */
@@ -248,6 +249,9 @@ void sta_info_free(struct ieee80211_local *local, struct sta_info *sta)
 	if (sta->sta.txq[0])
 		kfree(to_txq_info(sta->sta.txq[0]));
 	kfree(rcu_dereference_raw(sta->sta.rates));
+#ifdef CONFIG_MAC80211_MESH
+	kfree(sta->mesh);
+#endif
 	kfree(sta);
 }
 
@@ -281,12 +285,12 @@ static void sta_deliver_ps_frames(struct work_struct *wk)
 static int sta_prepare_rate_control(struct ieee80211_local *local,
 				    struct sta_info *sta, gfp_t gfp)
 {
-	if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
+	if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
 		return 0;
 
 	sta->rate_ctrl = local->rate_ctrl;
 	sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl,
-						     &sta->sta, gfp);
+						     sta, gfp);
 	if (!sta->rate_ctrl_priv)
 		return -ENOMEM;
 
@@ -299,7 +303,6 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_hw *hw = &local->hw;
 	struct sta_info *sta;
-	struct timespec uptime;
 	int i;
 
 	sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp);
@@ -312,27 +315,33 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
 	INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work);
 	mutex_init(&sta->ampdu_mlme.mtx);
 #ifdef CONFIG_MAC80211_MESH
-	if (ieee80211_vif_is_mesh(&sdata->vif) &&
-	    !sdata->u.mesh.user_mpm)
-		init_timer(&sta->plink_timer);
-	sta->nonpeer_pm = NL80211_MESH_POWER_ACTIVE;
+	if (ieee80211_vif_is_mesh(&sdata->vif)) {
+		sta->mesh = kzalloc(sizeof(*sta->mesh), gfp);
+		if (!sta->mesh)
+			goto free;
+		spin_lock_init(&sta->mesh->plink_lock);
+		if (ieee80211_vif_is_mesh(&sdata->vif) &&
+		    !sdata->u.mesh.user_mpm)
+			init_timer(&sta->mesh->plink_timer);
+		sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE;
+	}
 #endif
 
+	memcpy(sta->addr, addr, ETH_ALEN);
 	memcpy(sta->sta.addr, addr, ETH_ALEN);
 	sta->local = local;
 	sta->sdata = sdata;
-	sta->last_rx = jiffies;
+	sta->rx_stats.last_rx = jiffies;
 
 	sta->sta_state = IEEE80211_STA_NONE;
 
 	/* Mark TID as unreserved */
 	sta->reserved_tid = IEEE80211_TID_UNRESERVED;
 
-	ktime_get_ts(&uptime);
-	sta->last_connected = uptime.tv_sec;
-	ewma_init(&sta->avg_signal, 1024, 8);
-	for (i = 0; i < ARRAY_SIZE(sta->chain_signal_avg); i++)
-		ewma_init(&sta->chain_signal_avg[i], 1024, 8);
+	sta->last_connected = ktime_get_seconds();
+	ewma_signal_init(&sta->rx_stats.avg_signal);
+	for (i = 0; i < ARRAY_SIZE(sta->rx_stats.chain_signal_avg); i++)
+		ewma_signal_init(&sta->rx_stats.chain_signal_avg[i]);
 
 	if (local->ops->wake_tx_queue) {
 		void *txq_data;
@@ -403,6 +412,9 @@ free_txq:
 	if (sta->sta.txq[0])
 		kfree(to_txq_info(sta->sta.txq[0]));
 free:
+#ifdef CONFIG_MAC80211_MESH
+	kfree(sta->mesh);
+#endif
 	kfree(sta);
 	return NULL;
 }
@@ -621,7 +633,7 @@ static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending)
 	bool indicate_tim = false;
 	u8 ignore_for_tim = sta->sta.uapsd_queues;
 	int ac;
-	u16 id;
+	u16 id = sta->sta.aid;
 
 	if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
 	    sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
@@ -629,19 +641,16 @@ static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending)
 			return;
 
 		ps = &sta->sdata->bss->ps;
-		id = sta->sta.aid;
 #ifdef CONFIG_MAC80211_MESH
 	} else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) {
 		ps = &sta->sdata->u.mesh.ps;
-		/* TIM map only for 1 <= PLID <= IEEE80211_MAX_AID */
-		id = sta->plid % (IEEE80211_MAX_AID + 1);
 #endif
 	} else {
 		return;
 	}
 
 	/* No need to do anything if the driver does all */
-	if (local->hw.flags & IEEE80211_HW_AP_LINK_PS)
+	if (ieee80211_hw_check(&local->hw, AP_LINK_PS))
 		return;
 
 	if (sta->dead)
@@ -1057,7 +1066,7 @@ void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
 		if (sdata != sta->sdata)
 			continue;
 
-		if (time_after(jiffies, sta->last_rx + exp_time)) {
+		if (time_after(jiffies, sta->rx_stats.last_rx + exp_time)) {
 			sta_dbg(sta->sdata, "expiring inactive STA %pM\n",
 				sta->sta.addr);
 
@@ -1146,7 +1155,7 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
 	sta->driver_buffered_tids = 0;
 	sta->txq_buffered_tids = 0;
 
-	if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS))
+	if (!ieee80211_hw_check(&local->hw, AP_LINK_PS))
 		drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta);
 
 	if (sta->sta.txq[0]) {
@@ -1217,6 +1226,8 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
 	ps_dbg(sdata,
 	       "STA %pM aid %d sending %d filtered/%d PS frames since STA not sleeping anymore\n",
 	       sta->sta.addr, sta->sta.aid, filtered, buffered);
+
+	ieee80211_check_fast_xmit(sta);
 }
 
 static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata,
@@ -1615,6 +1626,7 @@ void ieee80211_sta_block_awake(struct ieee80211_hw *hw,
 
 	if (block) {
 		set_sta_flag(sta, WLAN_STA_PS_DRIVER);
+		ieee80211_clear_fast_xmit(sta);
 		return;
 	}
 
@@ -1632,6 +1644,7 @@ void ieee80211_sta_block_awake(struct ieee80211_hw *hw,
 		ieee80211_queue_work(hw, &sta->drv_deliver_wk);
 	} else {
 		clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
+		ieee80211_check_fast_xmit(sta);
 	}
 }
 EXPORT_SYMBOL(ieee80211_sta_block_awake);
@@ -1736,6 +1749,7 @@ int sta_info_move_state(struct sta_info *sta,
 			     !sta->sdata->u.vlan.sta))
 				atomic_dec(&sta->sdata->bss->num_mcast_sta);
 			clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags);
+			ieee80211_clear_fast_xmit(sta);
 		}
 		break;
 	case IEEE80211_STA_AUTHORIZED:
@@ -1745,6 +1759,7 @@ int sta_info_move_state(struct sta_info *sta,
 			     !sta->sdata->u.vlan.sta))
 				atomic_inc(&sta->sdata->bss->num_mcast_sta);
 			set_bit(WLAN_STA_AUTHORIZED, &sta->_flags);
+			ieee80211_check_fast_xmit(sta);
 		}
 		break;
 	default:
@@ -1791,12 +1806,50 @@ u8 sta_info_tx_streams(struct sta_info *sta)
 			>> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1;
 }
 
+static void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
+{
+	rinfo->flags = 0;
+
+	if (sta->rx_stats.last_rate_flag & RX_FLAG_HT) {
+		rinfo->flags |= RATE_INFO_FLAGS_MCS;
+		rinfo->mcs = sta->rx_stats.last_rate_idx;
+	} else if (sta->rx_stats.last_rate_flag & RX_FLAG_VHT) {
+		rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
+		rinfo->nss = sta->rx_stats.last_rate_vht_nss;
+		rinfo->mcs = sta->rx_stats.last_rate_idx;
+	} else {
+		struct ieee80211_supported_band *sband;
+		int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
+		u16 brate;
+
+		sband = sta->local->hw.wiphy->bands[
+				ieee80211_get_sdata_band(sta->sdata)];
+		brate = sband->bitrates[sta->rx_stats.last_rate_idx].bitrate;
+		rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
+	}
+
+	if (sta->rx_stats.last_rate_flag & RX_FLAG_SHORT_GI)
+		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
+
+	if (sta->rx_stats.last_rate_flag & RX_FLAG_5MHZ)
+		rinfo->bw = RATE_INFO_BW_5;
+	else if (sta->rx_stats.last_rate_flag & RX_FLAG_10MHZ)
+		rinfo->bw = RATE_INFO_BW_10;
+	else if (sta->rx_stats.last_rate_flag & RX_FLAG_40MHZ)
+		rinfo->bw = RATE_INFO_BW_40;
+	else if (sta->rx_stats.last_rate_vht_flag & RX_VHT_FLAG_80MHZ)
+		rinfo->bw = RATE_INFO_BW_80;
+	else if (sta->rx_stats.last_rate_vht_flag & RX_VHT_FLAG_160MHZ)
+		rinfo->bw = RATE_INFO_BW_160;
+	else
+		rinfo->bw = RATE_INFO_BW_20;
+}
+
 void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 {
 	struct ieee80211_sub_if_data *sdata = sta->sdata;
 	struct ieee80211_local *local = sdata->local;
 	struct rate_control_ref *ref = NULL;
-	struct timespec uptime;
 	u32 thr = 0;
 	int i, ac;
 
@@ -1818,51 +1871,54 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 			 BIT(NL80211_STA_INFO_STA_FLAGS) |
 			 BIT(NL80211_STA_INFO_BSS_PARAM) |
 			 BIT(NL80211_STA_INFO_CONNECTED_TIME) |
-			 BIT(NL80211_STA_INFO_RX_DROP_MISC) |
-			 BIT(NL80211_STA_INFO_BEACON_LOSS);
+			 BIT(NL80211_STA_INFO_RX_DROP_MISC);
+
+	if (sdata->vif.type == NL80211_IFTYPE_STATION) {
+		sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count;
+		sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_LOSS);
+	}
 
-	ktime_get_ts(&uptime);
-	sinfo->connected_time = uptime.tv_sec - sta->last_connected;
-	sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
+	sinfo->connected_time = ktime_get_seconds() - sta->last_connected;
+	sinfo->inactive_time =
+		jiffies_to_msecs(jiffies - sta->rx_stats.last_rx);
 
 	if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) |
 			       BIT(NL80211_STA_INFO_TX_BYTES)))) {
 		sinfo->tx_bytes = 0;
 		for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
-			sinfo->tx_bytes += sta->tx_bytes[ac];
+			sinfo->tx_bytes += sta->tx_stats.bytes[ac];
 		sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64);
 	}
 
 	if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_PACKETS))) {
 		sinfo->tx_packets = 0;
 		for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
-			sinfo->tx_packets += sta->tx_packets[ac];
+			sinfo->tx_packets += sta->tx_stats.packets[ac];
 		sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS);
 	}
 
 	if (!(sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES64) |
 			       BIT(NL80211_STA_INFO_RX_BYTES)))) {
-		sinfo->rx_bytes = sta->rx_bytes;
+		sinfo->rx_bytes = sta->rx_stats.bytes;
 		sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64);
 	}
 
 	if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_PACKETS))) {
-		sinfo->rx_packets = sta->rx_packets;
+		sinfo->rx_packets = sta->rx_stats.packets;
 		sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS);
 	}
 
 	if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_RETRIES))) {
-		sinfo->tx_retries = sta->tx_retry_count;
+		sinfo->tx_retries = sta->status_stats.retry_count;
 		sinfo->filled |= BIT(NL80211_STA_INFO_TX_RETRIES);
 	}
 
 	if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_FAILED))) {
-		sinfo->tx_failed = sta->tx_retry_failed;
+		sinfo->tx_failed = sta->status_stats.retry_failed;
 		sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED);
 	}
 
-	sinfo->rx_dropped_misc = sta->rx_dropped;
-	sinfo->beacon_loss_count = sta->beacon_loss_count;
+	sinfo->rx_dropped_misc = sta->rx_stats.dropped;
 
 	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 	    !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) {
@@ -1871,35 +1927,38 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 		sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif);
 	}
 
-	if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
-	    (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
+	if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) ||
+	    ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) {
 		if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL))) {
-			sinfo->signal = (s8)sta->last_signal;
+			sinfo->signal = (s8)sta->rx_stats.last_signal;
 			sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
 		}
 
 		if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))) {
-			sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
+			sinfo->signal_avg =
+				-ewma_signal_read(&sta->rx_stats.avg_signal);
 			sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
 		}
 	}
 
-	if (sta->chains &&
+	if (sta->rx_stats.chains &&
 	    !(sinfo->filled & (BIT(NL80211_STA_INFO_CHAIN_SIGNAL) |
 			       BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) {
 		sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL) |
 				 BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG);
 
-		sinfo->chains = sta->chains;
+		sinfo->chains = sta->rx_stats.chains;
 		for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
-			sinfo->chain_signal[i] = sta->chain_signal_last[i];
+			sinfo->chain_signal[i] =
+				sta->rx_stats.chain_signal_last[i];
 			sinfo->chain_signal_avg[i] =
-				(s8) -ewma_read(&sta->chain_signal_avg[i]);
+				-ewma_signal_read(&sta->rx_stats.chain_signal_avg[i]);
 		}
 	}
 
 	if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE))) {
-		sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
+		sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate,
+				     &sinfo->txrate);
 		sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
 	}
 
@@ -1914,28 +1973,30 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 
 		if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) {
 			tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU);
-			tidstats->rx_msdu = sta->rx_msdu[i];
+			tidstats->rx_msdu = sta->rx_stats.msdu[i];
 		}
 
 		if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) {
 			tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU);
-			tidstats->tx_msdu = sta->tx_msdu[i];
+			tidstats->tx_msdu = sta->tx_stats.msdu[i];
 		}
 
 		if (!(tidstats->filled &
 				BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) &&
-		    local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
+		    ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
 			tidstats->filled |=
 				BIT(NL80211_TID_STATS_TX_MSDU_RETRIES);
-			tidstats->tx_msdu_retries = sta->tx_msdu_retries[i];
+			tidstats->tx_msdu_retries =
+				sta->status_stats.msdu_retries[i];
 		}
 
 		if (!(tidstats->filled &
 				BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) &&
-		    local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
+		    ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
 			tidstats->filled |=
 				BIT(NL80211_TID_STATS_TX_MSDU_FAILED);
-			tidstats->tx_msdu_failed = sta->tx_msdu_failed[i];
+			tidstats->tx_msdu_failed =
+				sta->status_stats.msdu_failed[i];
 		}
 	}
 
@@ -1948,16 +2009,16 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 				 BIT(NL80211_STA_INFO_PEER_PM) |
 				 BIT(NL80211_STA_INFO_NONPEER_PM);
 
-		sinfo->llid = sta->llid;
-		sinfo->plid = sta->plid;
-		sinfo->plink_state = sta->plink_state;
+		sinfo->llid = sta->mesh->llid;
+		sinfo->plid = sta->mesh->plid;
+		sinfo->plink_state = sta->mesh->plink_state;
 		if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 			sinfo->filled |= BIT(NL80211_STA_INFO_T_OFFSET);
-			sinfo->t_offset = sta->t_offset;
+			sinfo->t_offset = sta->mesh->t_offset;
 		}
-		sinfo->local_pm = sta->local_pm;
-		sinfo->peer_pm = sta->peer_pm;
-		sinfo->nonpeer_pm = sta->nonpeer_pm;
+		sinfo->local_pm = sta->mesh->local_pm;
+		sinfo->peer_pm = sta->mesh->peer_pm;
+		sinfo->nonpeer_pm = sta->mesh->nonpeer_pm;
 #endif
 	}