wl12xx: enable AP advanced functionality
This adjusts FW TX block allocation for connected stations in PS.
Firmware congestion is measured in allocated packets instead of blocks.
Allow a link in PS to queue up to 2 packets to the FW.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index 0fa3a22..ad0b5a1 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -755,8 +755,7 @@
return ret;
}
-#if 0
-static void wl1271_irq_ps_regulate_link(struct wl1271 *wl, u8 hlid, u8 tx_blks)
+static void wl12xx_irq_ps_regulate_link(struct wl1271 *wl, u8 hlid, u8 tx_pkts)
{
bool fw_ps;
@@ -768,21 +767,29 @@
/*
* Wake up from high level PS if the STA is asleep with too little
- * blocks in FW or if the STA is awake.
+ * packets in FW or if the STA is awake.
*/
- if (!fw_ps || tx_blks < WL1271_PS_STA_MAX_BLOCKS)
+ if (!fw_ps || tx_pkts < WL1271_PS_STA_MAX_PACKETS)
wl1271_ps_link_end(wl, hlid);
/* Start high-level PS if the STA is asleep with enough blocks in FW */
- else if (fw_ps && tx_blks >= WL1271_PS_STA_MAX_BLOCKS)
+ else if (fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
wl1271_ps_link_start(wl, hlid, true);
}
-static void wl1271_irq_update_links_status(struct wl1271 *wl,
- struct wl1271_fw_ap_status *status)
+bool wl1271_is_active_sta(struct wl1271 *wl, u8 hlid)
+{
+ int id = hlid - WL1271_AP_STA_HLID_START;
+ return test_bit(id, wl->ap_hlid_map);
+}
+
+static void wl12xx_irq_update_links_status(struct wl1271 *wl,
+ struct wl12xx_fw_status *status)
{
u32 cur_fw_ps_map;
- u8 hlid;
+ u8 hlid, cnt;
+
+ /* TODO: also use link_fast_bitmap here */
cur_fw_ps_map = le32_to_cpu(status->link_ps_bitmap);
if (wl->ap_fw_ps_map != cur_fw_ps_map) {
@@ -795,18 +802,20 @@
}
for (hlid = WL1271_AP_STA_HLID_START; hlid < AP_MAX_LINKS; hlid++) {
- u8 cnt = status->tx_lnk_free_blks[hlid] -
- wl->links[hlid].prev_freed_blks;
+ if (!wl1271_is_active_sta(wl, hlid))
+ continue;
- wl->links[hlid].prev_freed_blks =
- status->tx_lnk_free_blks[hlid];
- wl->links[hlid].allocated_blks -= cnt;
+ cnt = status->tx_lnk_free_pkts[hlid] -
+ wl->links[hlid].prev_freed_pkts;
- wl1271_irq_ps_regulate_link(wl, hlid,
- wl->links[hlid].allocated_blks);
+ wl->links[hlid].prev_freed_pkts =
+ status->tx_lnk_free_pkts[hlid];
+ wl->links[hlid].allocated_pkts -= cnt;
+
+ wl12xx_irq_ps_regulate_link(wl, hlid,
+ wl->links[hlid].allocated_pkts);
}
}
-#endif
static void wl12xx_fw_status(struct wl1271 *wl,
struct wl12xx_fw_status *status)
@@ -865,11 +874,8 @@
clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
/* for AP update num of allocated TX blocks per link and ps status */
- if (wl->bss_type == BSS_TYPE_AP_BSS) {
-#if 0
- wl1271_irq_update_links_status(wl, status);
-#endif
- }
+ if (wl->bss_type == BSS_TYPE_AP_BSS)
+ wl12xx_irq_update_links_status(wl, status);
/* update the host-chipset time offset */
getnstimeofday(&ts);
@@ -3711,12 +3717,6 @@
__clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
}
-bool wl1271_is_active_sta(struct wl1271 *wl, u8 hlid)
-{
- int id = hlid - WL1271_AP_STA_HLID_START;
- return test_bit(id, wl->ap_hlid_map);
-}
-
static int wl1271_op_sta_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
diff --git a/drivers/net/wireless/wl12xx/ps.c b/drivers/net/wireless/wl12xx/ps.c
index 3548377..4b720b1 100644
--- a/drivers/net/wireless/wl12xx/ps.c
+++ b/drivers/net/wireless/wl12xx/ps.c
@@ -226,8 +226,8 @@
if (test_bit(hlid, &wl->ap_ps_map))
return;
- wl1271_debug(DEBUG_PSM, "start mac80211 PSM on hlid %d blks %d "
- "clean_queues %d", hlid, wl->links[hlid].allocated_blks,
+ wl1271_debug(DEBUG_PSM, "start mac80211 PSM on hlid %d pkts %d "
+ "clean_queues %d", hlid, wl->links[hlid].allocated_pkts,
clean_queues);
rcu_read_lock();
diff --git a/drivers/net/wireless/wl12xx/tx.c b/drivers/net/wireless/wl12xx/tx.c
index ccbcd0a..0f15785 100644
--- a/drivers/net/wireless/wl12xx/tx.c
+++ b/drivers/net/wireless/wl12xx/tx.c
@@ -123,27 +123,25 @@
wl1271_acx_set_inconnection_sta(wl, hdr->addr1);
}
-#if 0
static void wl1271_tx_regulate_link(struct wl1271 *wl, u8 hlid)
{
bool fw_ps;
- u8 tx_blks;
+ u8 tx_pkts;
/* only regulate station links */
if (hlid < WL1271_AP_STA_HLID_START)
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;
/*
* 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.
*/
- if (fw_ps && tx_blks >= WL1271_PS_STA_MAX_BLOCKS)
+ if (fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
wl1271_ps_link_start(wl, hlid, true);
}
-#endif
static bool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb)
{
@@ -245,8 +243,9 @@
ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
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;
@@ -414,9 +413,7 @@
if (wl->bss_type == BSS_TYPE_AP_BSS) {
wl1271_tx_ap_update_inconnection_sta(wl, skb);
-#if 0
wl1271_tx_regulate_link(wl, hlid);
-#endif
} else {
wl1271_tx_update_filters(wl, skb);
}
@@ -888,8 +885,8 @@
if (wl->bss_type == BSS_TYPE_AP_BSS) {
for (i = 0; i < AP_MAX_LINKS; 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;
diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h
index 6118df5..61a7c21 100644
--- a/drivers/net/wireless/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/wl12xx/wl12xx.h
@@ -152,15 +152,14 @@
#define WL1271_AP_STA_HLID_START 3
/*
- * When in AP-mode, we allow (at least) this number of mem-blocks
+ * When in AP-mode, we allow (at least) this number of packets
* to be transmitted to FW for a STA in PS-mode. Only when packets are
* present in the FW buffers it will wake the sleeping STA. We want to put
* enough packets for the driver to transmit all of its buffered data before
- * the STA goes to sleep again. But we don't want to take too much mem-blocks
+ * the STA goes to sleep again. But we don't want to take too much memory
* as it might hurt the throughput of active STAs.
- * The number of blocks (18) is enough for 2 large packets.
*/
-#define WL1271_PS_STA_MAX_BLOCKS (2 * 9)
+#define WL1271_PS_STA_MAX_PACKETS 2
#define WL1271_AP_BSS_INDEX 0
#define WL1271_AP_DEF_BEACON_EXP 20
@@ -237,8 +236,12 @@
#define AP_MAX_STATIONS 5
-/* Broadcast and Global links + links to stations */
-#define AP_MAX_LINKS (AP_MAX_STATIONS + 2)
+/* Broadcast and Global links + system link + links to stations */
+/*
+ * TODO: when WL1271_AP_STA_HLID_START is no longer constant, change all
+ * the places that use this.
+ */
+#define AP_MAX_LINKS (AP_MAX_STATIONS + 3)
/* FW status registers */
struct wl12xx_fw_status {
@@ -271,8 +274,8 @@
/* Cumulative counter of released packets per AC */
u8 tx_released_pkts[NUM_TX_QUEUES];
- /* Cumulative counter of freed MBs per HLID */
- u8 tx_lnk_free_blks[WL12XX_MAX_LINKS];
+ /* Cumulative counter of freed packets per HLID */
+ u8 tx_lnk_free_pkts[WL12XX_MAX_LINKS];
/* Cumulative counter of released Voice memory blocks */
u8 tx_voice_released_blks;
@@ -351,9 +354,9 @@
/* AP-mode - TX queue per AC in link */
struct sk_buff_head tx_queue[NUM_TX_QUEUES];
- /* accounting for allocated / available TX blocks in FW */
- u8 allocated_blks;
- u8 prev_freed_blks;
+ /* accounting for allocated / freed packets in FW */
+ u8 allocated_pkts;
+ u8 prev_freed_pkts;
u8 addr[ETH_ALEN];