wl12xx: AP-mode - management of links in PS-mode
Update the PS mode of each link according to a bitmap polled from
fw_status. Manually notify mac80211 about PS mode changes in connected
stations.
mac80211 will only be notified about PS start when the station is in PS
and there is a small number of TX blocks from this link ready in HW.
This is required for waking up the remote station since the TIM is
updated entirely by FW.
When a station enters mac80211-PS-mode, we drop all the skbs in the
low-level TX queues belonging to this sta with STAT_TX_FILTERED
to keep our queues clean.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h
index 0e00c5b..338acc9 100644
--- a/drivers/net/wireless/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/wl12xx/wl12xx.h
@@ -153,6 +153,17 @@
#define WL1271_AP_BROADCAST_HLID 1
#define WL1271_AP_STA_HLID_START 2
+/*
+ * When in AP-mode, we allow (at least) this number of mem-blocks
+ * 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
+ * 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_AP_BSS_INDEX 0
#define WL1271_AP_DEF_INACTIV_SEC 300
#define WL1271_AP_DEF_BEACON_EXP 20
@@ -326,6 +337,8 @@
/* accounting for allocated / available TX blocks in FW */
u8 allocated_blks;
u8 prev_freed_blks;
+
+ u8 addr[ETH_ALEN];
};
struct wl1271 {
@@ -516,6 +529,12 @@
/* the hlid of the link where the last transmitted skb came from */
int last_tx_hlid;
+
+ /* AP-mode - a bitmap of links currently in PS mode according to FW */
+ u32 ap_fw_ps_map;
+
+ /* AP-mode - a bitmap of links currently in PS mode in mac80211 */
+ unsigned long ap_ps_map;
};
struct wl1271_station {
