wl12xx: support FW TX inactivity triggers

In AP mode we register for the MAX_TX_RETRY and INACTIVE_STA events.
Both are reported to the upper layers as a TX failure in the offending
stations.

In STA mode we register only for the MAX_TX_RETRY event. A TX failure is
interpreted as a loss of connection.

Support for IEEE80211_HW_REPORTS_TX_ACK_STATUS has been removed to avoid
the inherent race condition of a mac80211 TX failure counter in addition
to the FW counter.

This patch depends on "mac80211: allow low level driver to report packet
loss"

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 11 insertions, 1 deletions

diff --git a/drivers/net/wireless/wl12xx/event.h b/drivers/net/wireless/wl12xx/event.h
index b6cf06e565a4..7ae5a0821241 100644
--- a/drivers/net/wireless/wl12xx/event.h
+++ b/drivers/net/wireless/wl12xx/event.h
@@ -58,13 +58,16 @@ enum {
         CHANNEL_SWITCH_COMPLETE_EVENT_ID         = BIT(17),
         BSS_LOSE_EVENT_ID                        = BIT(18),
         REGAINED_BSS_EVENT_ID                    = BIT(19),
-        ROAMING_TRIGGER_MAX_TX_RETRY_EVENT_ID    = BIT(20),
+        MAX_TX_RETRY_EVENT_ID                    = BIT(20),
         /* STA: dummy paket for dynamic mem blocks */
         DUMMY_PACKET_EVENT_ID                    = BIT(21),
         /* AP: STA remove complete */
         STA_REMOVE_COMPLETE_EVENT_ID             = BIT(21),
         SOFT_GEMINI_SENSE_EVENT_ID               = BIT(22),
+        /* STA: SG prediction */
         SOFT_GEMINI_PREDICTION_EVENT_ID          = BIT(23),
+        /* AP: Inactive STA */
+        INACTIVE_STA_EVENT_ID                    = BIT(23),
         SOFT_GEMINI_AVALANCHE_EVENT_ID           = BIT(24),
         PLT_RX_CALIBRATION_COMPLETE_EVENT_ID     = BIT(25),
         DBG_EVENT_ID                             = BIT(26),
@@ -119,7 +122,11 @@ struct event_mailbox {
 
         /* AP FW only */
         u8 hlid_removed;
+
+        /* a bitmap of hlids for stations that have been inactive too long */
         __le16 sta_aging_status;
+
+        /* a bitmap of hlids for stations which didn't respond to TX */
         __le16 sta_tx_retry_exceeded;
 
         u8 reserved_5[24];
@@ -130,4 +137,7 @@ void wl1271_event_mbox_config(struct wl1271 *wl);
 int wl1271_event_handle(struct wl1271 *wl, u8 mbox);
 void wl1271_pspoll_work(struct work_struct *work);
 
+/* Functions from main.c */
+bool wl1271_is_active_sta(struct wl1271 *wl, u8 hlid);
+
 #endif