wl1271: Add connection monitoring configuration

Add configuration for connection monitor (number of allowed beacons, and
timeout after last received beacon.)
Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/wl12xx/wl1271_acx.c

@@ -442,6 +442,36 @@ int wl1271_acx_beacon_filter_table(struct wl1271 *wl)
 	return ret;
 }
 
+int wl1271_acx_conn_monit_params(struct wl1271 *wl)
+{
+	struct acx_conn_monit_params *acx;
+	int ret;
+
+	wl1271_debug(DEBUG_ACX, "acx connection monitor parameters");
+
+	acx = kzalloc(sizeof(*acx), GFP_KERNEL);
+	if (!acx) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	acx->synch_fail_thold = SYNCH_FAIL_DEFAULT_THRESHOLD;
+	acx->bss_lose_timeout = NO_BEACON_DEFAULT_TIMEOUT;
+
+	ret = wl1271_cmd_configure(wl, ACX_CONN_MONIT_PARAMS,
+				   acx, sizeof(*acx));
+	if (ret < 0) {
+		wl1271_warning("failed to set connection monitor "
+			       "parameters: %d", ret);
+		goto out;
+	}
+
+out:
+	kfree(acx);
+	return ret;
+}
+
+
 int wl1271_acx_sg_enable(struct wl1271 *wl)
 {
 	struct acx_bt_wlan_coex *pta;

drivers/net/wireless/wl12xx/wl1271_acx.h

@@ -406,6 +406,16 @@ struct acx_beacon_filter_ie_table {
 	u8 pad[3];
 } __attribute__ ((packed));
 
+#define SYNCH_FAIL_DEFAULT_THRESHOLD    5     /* number of beacons */
+#define NO_BEACON_DEFAULT_TIMEOUT       (100) /* TU */
+
+struct acx_conn_monit_params {
+       struct acx_header header;
+
+       u32 synch_fail_thold; /* number of beacons missed */
+       u32 bss_lose_timeout; /* number of TU's from synch fail */
+};
+
 enum {
 	SG_ENABLE = 0,
 	SG_DISABLE,
@@ -1198,6 +1208,7 @@ int wl1271_acx_service_period_timeout(struct wl1271 *wl);
 int wl1271_acx_rts_threshold(struct wl1271 *wl, u16 rts_threshold);
 int wl1271_acx_beacon_filter_opt(struct wl1271 *wl);
 int wl1271_acx_beacon_filter_table(struct wl1271 *wl);
+int wl1271_acx_conn_monit_params(struct wl1271 *wl);
 int wl1271_acx_sg_enable(struct wl1271 *wl);
 int wl1271_acx_sg_cfg(struct wl1271 *wl);
 int wl1271_acx_cca_threshold(struct wl1271 *wl);

drivers/net/wireless/wl12xx/wl1271_init.c

@@ -323,6 +323,11 @@ int wl1271_hw_init(struct wl1271 *wl)
 	if (ret < 0)
 		goto out_free_memmap;
 
+	/* Initialize connection monitoring thresholds */
+	ret = wl1271_acx_conn_monit_params(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
 	/* Beacon filtering */
 	ret = wl1271_init_beacon_filter(wl);
 	if (ret < 0)
@@ -392,6 +397,7 @@ int wl1271_hw_init(struct wl1271 *wl)
 
  out_free_memmap:
 	kfree(wl->target_mem_map);
+	wl->target_mem_map = NULL;
 
 	return ret;
 }