1 files changed, 115 insertions, 77 deletions

diff --git a/drivers/net/wireless/wl12xx/tx.c b/drivers/net/wireless/wl12xx/tx.c
index 48fde96ce0d..bad9e29d49b 100644
--- a/drivers/net/wireless/wl12xx/tx.c
+++ b/drivers/net/wireless/wl12xx/tx.c
@@ -30,6 +30,7 @@
 #include "reg.h"
 #include "ps.h"
 #include "tx.h"
+#include "event.h"
 
 static int wl1271_set_default_wep_key(struct wl1271 *wl, u8 id)
 {
@@ -37,9 +38,10 @@ static int wl1271_set_default_wep_key(struct wl1271 *wl, u8 id)
 	bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
 
 	if (is_ap)
-		ret = wl1271_cmd_set_ap_default_wep_key(wl, id);
+		ret = wl12xx_cmd_set_default_wep_key(wl, id,
+						     wl->ap_bcast_hlid);
 	else
-		ret = wl1271_cmd_set_sta_default_wep_key(wl, id);
+		ret = wl12xx_cmd_set_default_wep_key(wl, id, wl->sta_hlid);
 
 	if (ret < 0)
 		return ret;
@@ -77,9 +79,9 @@ static int wl1271_tx_update_filters(struct wl1271 *wl,
 						 struct sk_buff *skb)
 {
 	struct ieee80211_hdr *hdr;
+	int ret;
 
-	hdr = (struct ieee80211_hdr *)(skb->data +
-				       sizeof(struct wl1271_tx_hw_descr));
+	hdr = (struct ieee80211_hdr *)skb->data;
 
 	/*
 	 * stop bssid-based filtering before transmitting authentication
@@ -90,9 +92,19 @@ static int wl1271_tx_update_filters(struct wl1271 *wl,
 	if (!ieee80211_is_auth(hdr->frame_control))
 		return 0;
 
-	wl1271_configure_filters(wl, FIF_OTHER_BSS);
+	if (wl->dev_hlid != WL12XX_INVALID_LINK_ID)
+		goto out;
 
-	return wl1271_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
+	wl1271_debug(DEBUG_CMD, "starting device role for roaming");
+	ret = wl12xx_cmd_role_start_dev(wl);
+	if (ret < 0)
+		goto out;
+
+	ret = wl12xx_roc(wl, wl->dev_role_id);
+	if (ret < 0)
+		goto out;
+out:
+	return 0;
 }
 
 static void wl1271_tx_ap_update_inconnection_sta(struct wl1271 *wl,
@@ -113,25 +125,36 @@ static void wl1271_tx_ap_update_inconnection_sta(struct wl1271 *wl,
 
 static void wl1271_tx_regulate_link(struct wl1271 *wl, u8 hlid)
 {
-	bool fw_ps;
-	u8 tx_blks;
+	bool fw_ps, single_sta;
+	u8 tx_pkts;
 
 	/* only regulate station links */
 	if (hlid < WL1271_AP_STA_HLID_START)
 		return;
 
+	if (WARN_ON(!wl1271_is_active_sta(wl, hlid)))
+	    return;
+
 	fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
-	tx_blks = wl->links[hlid].allocated_blks;
+	tx_pkts = wl->links[hlid].allocated_pkts;
+	single_sta = (wl->active_sta_count == 1);
 
 	/*
 	 * if in FW PS and there is enough data in FW we can put the link
 	 * into high-level PS and clean out its TX queues.
+	 * Make an exception if this is the only connected station. In this
+	 * case FW-memory congestion is not a problem.
 	 */
-	if (fw_ps && tx_blks >= WL1271_PS_STA_MAX_BLOCKS)
+	if (!single_sta && fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
 		wl1271_ps_link_start(wl, hlid, true);
 }
 
-u8 wl1271_tx_get_hlid(struct sk_buff *skb)
+bool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb)
+{
+	return wl->dummy_packet == skb;
+}
+
+u8 wl12xx_tx_get_hlid_ap(struct wl1271 *wl, struct sk_buff *skb)
 {
 	struct ieee80211_tx_info *control = IEEE80211_SKB_CB(skb);
 
@@ -144,14 +167,38 @@ u8 wl1271_tx_get_hlid(struct sk_buff *skb)
 	} else {
 		struct ieee80211_hdr *hdr;
 
+		if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags))
+			return wl->system_hlid;
+
 		hdr = (struct ieee80211_hdr *)skb->data;
 		if (ieee80211_is_mgmt(hdr->frame_control))
-			return WL1271_AP_GLOBAL_HLID;
+			return wl->ap_global_hlid;
 		else
-			return WL1271_AP_BROADCAST_HLID;
+			return wl->ap_bcast_hlid;
 	}
 }
 
+static u8 wl1271_tx_get_hlid(struct wl1271 *wl, struct sk_buff *skb)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+
+	if (wl12xx_is_dummy_packet(wl, skb))
+		return wl->system_hlid;
+
+	if (wl->bss_type == BSS_TYPE_AP_BSS)
+		return wl12xx_tx_get_hlid_ap(wl, skb);
+
+	wl1271_tx_update_filters(wl, skb);
+
+	if ((test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags) ||
+	     test_bit(WL1271_FLAG_IBSS_JOINED, &wl->flags)) &&
+	    !ieee80211_is_auth(hdr->frame_control) &&
+	    !ieee80211_is_assoc_req(hdr->frame_control))
+		return wl->sta_hlid;
+	else
+		return wl->dev_hlid;
+}
+
 static unsigned int wl12xx_calc_packet_alignment(struct wl1271 *wl,
 						unsigned int packet_length)
 {
@@ -169,12 +216,7 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra,
 	u32 len;
 	u32 total_blocks;
 	int id, ret = -EBUSY, ac;
-	u32 spare_blocks;
-
-	if (unlikely(wl->quirks & WL12XX_QUIRK_USE_2_SPARE_BLOCKS))
-		spare_blocks = 2;
-	else
-		spare_blocks = 1;
+	u32 spare_blocks = wl->tx_spare_blocks;
 
 	if (buf_offset + total_len > WL1271_AGGR_BUFFER_SIZE)
 		return -EAGAIN;
@@ -188,6 +230,10 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra,
 	   in the firmware */
 	len = wl12xx_calc_packet_alignment(wl, total_len);
 
+	/* in case of a dummy packet, use default amount of spare mem blocks */
+	if (unlikely(wl12xx_is_dummy_packet(wl, skb)))
+		spare_blocks = TX_HW_BLOCK_SPARE_DEFAULT;
+
 	total_blocks = (len + TX_HW_BLOCK_SIZE - 1) / TX_HW_BLOCK_SIZE +
 		spare_blocks;
 
@@ -206,12 +252,14 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra,
 		desc->id = id;
 
 		wl->tx_blocks_available -= total_blocks;
+		wl->tx_allocated_blocks += total_blocks;
 
 		ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
-		wl->tx_allocated_blocks[ac] += total_blocks;
+		wl->tx_allocated_pkts[ac]++;
 
-		if (wl->bss_type == BSS_TYPE_AP_BSS)
-			wl->links[hlid].allocated_blks += total_blocks;
+		if (wl->bss_type == BSS_TYPE_AP_BSS &&
+		    hlid >= WL1271_AP_STA_HLID_START)
+			wl->links[hlid].allocated_pkts++;
 
 		ret = 0;
 
@@ -225,11 +273,6 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra,
 	return ret;
 }
 
-static bool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb)
-{
-	return wl->dummy_packet == skb;
-}
-
 static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
 			      u32 extra, struct ieee80211_tx_info *control,
 			      u8 hlid)
@@ -280,9 +323,9 @@ static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
 			wl->session_counter << TX_HW_ATTR_OFST_SESSION_COUNTER;
 	}
 
-	if (wl->bss_type != BSS_TYPE_AP_BSS) {
-		desc->aid = hlid;
+	desc->hlid = hlid;
 
+	if (wl->bss_type != BSS_TYPE_AP_BSS) {
 		/* if the packets are destined for AP (have a STA entry)
 		   send them with AP rate policies, otherwise use default
 		   basic rates */
@@ -291,18 +334,12 @@ static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
 		else
 			rate_idx = ACX_TX_BASIC_RATE;
 	} else {
-		desc->hlid = hlid;
-		switch (hlid) {
-		case WL1271_AP_GLOBAL_HLID:
+		if (hlid == wl->ap_global_hlid)
 			rate_idx = ACX_TX_AP_MODE_MGMT_RATE;
-			break;
-		case WL1271_AP_BROADCAST_HLID:
+		else if (hlid == wl->ap_bcast_hlid)
 			rate_idx = ACX_TX_AP_MODE_BCST_RATE;
-			break;
-		default:
+		else
 			rate_idx = ac;
-			break;
-		}
 	}
 
 	tx_attr |= rate_idx << TX_HW_ATTR_OFST_RATE_POLICY;
@@ -376,10 +413,11 @@ static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct sk_buff *skb,
 		}
 	}
 
-	if (wl->bss_type == BSS_TYPE_AP_BSS)
-		hlid = wl1271_tx_get_hlid(skb);
-	else
-		hlid = TX_HW_DEFAULT_AID;
+	hlid = wl1271_tx_get_hlid(wl, skb);
+	if (hlid == WL12XX_INVALID_LINK_ID) {
+		wl1271_error("invalid hlid. dropping skb 0x%p", skb);
+		return -EINVAL;
+	}
 
 	ret = wl1271_tx_allocate(wl, skb, extra, buf_offset, hlid);
 	if (ret < 0)
@@ -390,8 +428,6 @@ static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct sk_buff *skb,
 	if (wl->bss_type == BSS_TYPE_AP_BSS) {
 		wl1271_tx_ap_update_inconnection_sta(wl, skb);
 		wl1271_tx_regulate_link(wl, hlid);
-	} else {
-		wl1271_tx_update_filters(wl, skb);
 	}
 
 	/*
@@ -414,20 +450,20 @@ static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct sk_buff *skb,
 	return total_len;
 }
 
-u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set)
+u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set,
+				enum ieee80211_band rate_band)
 {
 	struct ieee80211_supported_band *band;
 	u32 enabled_rates = 0;
 	int bit;
 
-	band = wl->hw->wiphy->bands[wl->band];
+	band = wl->hw->wiphy->bands[rate_band];
 	for (bit = 0; bit < band->n_bitrates; bit++) {
 		if (rate_set & 0x1)
 			enabled_rates |= band->bitrates[bit].hw_value;
 		rate_set >>= 1;
 	}
 
-#ifdef CONFIG_WL12XX_HT
 	/* MCS rates indication are on bits 16 - 23 */
 	rate_set >>= HW_HT_RATES_OFFSET - band->n_bitrates;
 
@@ -436,7 +472,6 @@ u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set)
 			enabled_rates |= (CONF_HW_BIT_RATE_MCS_0 << bit);
 		rate_set >>= 1;
 	}
-#endif
 
 	return enabled_rates;
 }
@@ -462,20 +497,24 @@ void wl1271_handle_tx_low_watermark(struct wl1271 *wl)
 static struct sk_buff_head *wl1271_select_queue(struct wl1271 *wl,
 						struct sk_buff_head *queues)
 {
-	int i, q = -1;
-	u32 min_blks = 0xffffffff;
+	int i, q = -1, ac;
+	u32 min_pkts = 0xffffffff;
 
 	/*
 	 * Find a non-empty ac where:
 	 * 1. There are packets to transmit
 	 * 2. The FW has the least allocated blocks
+	 *
+	 * We prioritize the ACs according to VO>VI>BE>BK
 	 */
-	for (i = 0; i < NUM_TX_QUEUES; i++)
-		if (!skb_queue_empty(&queues[i]) &&
-		    (wl->tx_allocated_blocks[i] < min_blks)) {
-			q = i;
-			min_blks = wl->tx_allocated_blocks[q];
+	for (i = 0; i < NUM_TX_QUEUES; i++) {
+		ac = wl1271_tx_get_queue(i);
+		if (!skb_queue_empty(&queues[ac]) &&
+		    (wl->tx_allocated_pkts[ac] < min_pkts)) {
+			q = ac;
+			min_pkts = wl->tx_allocated_pkts[q];
 		}
+	}
 
 	if (q == -1)
 		return NULL;
@@ -579,7 +618,7 @@ static void wl1271_skb_queue_head(struct wl1271 *wl, struct sk_buff *skb)
 	if (wl12xx_is_dummy_packet(wl, skb)) {
 		set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
 	} else if (wl->bss_type == BSS_TYPE_AP_BSS) {
-		u8 hlid = wl1271_tx_get_hlid(skb);
+		u8 hlid = wl1271_tx_get_hlid(wl, skb);
 		skb_queue_head(&wl->links[hlid].tx_queue[q], skb);
 
 		/* make sure we dequeue the same packet next time */
@@ -826,10 +865,14 @@ void wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid)
 		total[i] = 0;
 		while ((skb = skb_dequeue(&wl->links[hlid].tx_queue[i]))) {
 			wl1271_debug(DEBUG_TX, "link freeing skb 0x%p", skb);
-			info = IEEE80211_SKB_CB(skb);
-			info->status.rates[0].idx = -1;
-			info->status.rates[0].count = 0;
-			ieee80211_tx_status_ni(wl->hw, skb);
+
+			if (!wl12xx_is_dummy_packet(wl, skb)) {
+				info = IEEE80211_SKB_CB(skb);
+				info->status.rates[0].idx = -1;
+				info->status.rates[0].count = 0;
+				ieee80211_tx_status_ni(wl->hw, skb);
+			}
+
 			total[i]++;
 		}
 	}
@@ -852,9 +895,10 @@ void wl1271_tx_reset(struct wl1271 *wl, bool reset_tx_queues)
 	/* TX failure */
 	if (wl->bss_type == BSS_TYPE_AP_BSS) {
 		for (i = 0; i < AP_MAX_LINKS; i++) {
+			wl1271_free_sta(wl, i);
 			wl1271_tx_reset_link_queues(wl, i);
-			wl->links[i].allocated_blks = 0;
-			wl->links[i].prev_freed_blks = 0;
+			wl->links[i].allocated_pkts = 0;
+			wl->links[i].prev_freed_pkts = 0;
 		}
 
 		wl->last_tx_hlid = 0;
@@ -871,10 +915,14 @@ void wl1271_tx_reset(struct wl1271 *wl, bool reset_tx_queues)
 					ieee80211_tx_status_ni(wl->hw, skb);
 				}
 			}
-			wl->tx_queue_count[i] = 0;
 		}
+
+		wl->ba_rx_bitmap = 0;
 	}
 
+	for (i = 0; i < NUM_TX_QUEUES; i++)
+		wl->tx_queue_count[i] = 0;
+
 	wl->stopped_queues_map = 0;
 
 	/*
@@ -942,20 +990,10 @@ void wl1271_tx_flush(struct wl1271 *wl)
 	wl1271_warning("Unable to flush all TX buffers, timed out.");
 }
 
-u32 wl1271_tx_min_rate_get(struct wl1271 *wl)
+u32 wl1271_tx_min_rate_get(struct wl1271 *wl, u32 rate_set)
 {
-	int i;
-	u32 rate = 0;
-
-	if (!wl->basic_rate_set) {
-		WARN_ON(1);
-		wl->basic_rate_set = wl->conf.tx.basic_rate;
-	}
-
-	for (i = 0; !rate; i++) {
-		if ((wl->basic_rate_set >> i) & 0x1)
-			rate = 1 << i;
-	}
+	if (WARN_ON(!rate_set))
+		return 0;
 
-	return rate;
+	return BIT(__ffs(rate_set));
 }