From 8b9d0bfa004cba666c5995e5fe0a42556765e073 Mon Sep 17 00:00:00 2001
From: Jouni Malinen <jouni@qca.qualcomm.com>
Date: Thu, 16 Feb 2012 16:26:44 +0200
Subject: [PATCH] Add mechanism for disabling radio for testing purposes

"wpa_cli set radio_disabled 1/0" can be used to disable/enable
radio to simulate out-of-radio-range condition in a testbed
device.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
---
 src/drivers/driver.h        | 12 ++++++++++++
 wpa_supplicant/ctrl_iface.c |  6 ++++++
 wpa_supplicant/driver_i.h   |  8 ++++++++
 3 files changed, 26 insertions(+)

diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index 8db7a6783..04aedcf0e 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -2497,6 +2497,18 @@ struct wpa_driver_ops {
 	 */
 	void (*poll_client)(void *priv, const u8 *own_addr,
 			    const u8 *addr, int qos);
+
+	/**
+	 * radio_disable - Disable/enable radio
+	 * @priv: Private driver interface data
+	 * @disabled: 1=disable 0=enable radio
+	 * Returns: 0 on success, -1 on failure
+	 *
+	 * This optional command is for testing purposes. It can be used to
+	 * disable the radio on a testbed device to simulate out-of-radio-range
+	 * conditions.
+	 */
+	int (*radio_disable)(void *priv, int disabled);
 };
 
 
diff --git a/wpa_supplicant/ctrl_iface.c b/wpa_supplicant/ctrl_iface.c
index 148992259..3602556b0 100644
--- a/wpa_supplicant/ctrl_iface.c
+++ b/wpa_supplicant/ctrl_iface.c
@@ -197,6 +197,12 @@ static int wpa_supplicant_ctrl_iface_set(struct wpa_supplicant *wpa_s,
 			ret = pno_start(wpa_s);
 		else
 			ret = pno_stop(wpa_s);
+	} else if (os_strcasecmp(cmd, "radio_disabled") == 0) {
+		int disabled = atoi(value);
+		if (wpa_drv_radio_disable(wpa_s, disabled) < 0)
+			ret = -1;
+		else if (disabled)
+			wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 	} else {
 		value[-1] = '=';
 		ret = wpa_config_process_global(wpa_s->conf, cmd, -1);
diff --git a/wpa_supplicant/driver_i.h b/wpa_supplicant/driver_i.h
index ebbe17dc4..5b1054052 100644
--- a/wpa_supplicant/driver_i.h
+++ b/wpa_supplicant/driver_i.h
@@ -657,4 +657,12 @@ static inline void wpa_drv_set_rekey_info(struct wpa_supplicant *wpa_s,
 	wpa_s->driver->set_rekey_info(wpa_s->drv_priv, kek, kck, replay_ctr);
 }
 
+static inline int wpa_drv_radio_disable(struct wpa_supplicant *wpa_s,
+					int disabled)
+{
+	if (!wpa_s->driver->radio_disable)
+		return -1;
+	return wpa_s->driver->radio_disable(wpa_s->drv_priv, disabled);
+}
+
 #endif /* DRIVER_I_H */