Update IBSS documentation to include RSN option

Signed-hostap: Jouni Malinen <j@w1.fi>

wpa_supplicant/config_ssid.h

@@ -315,12 +315,13 @@ struct wpa_ssid {
 	 * 4 = P2P Group Formation (used internally; not in configuration
 	 * files)
 	 *
-	 * Note: IBSS can only be used with key_mgmt NONE (plaintext and
-	 * static WEP) and key_mgmt=WPA-NONE (fixed group key TKIP/CCMP). In
-	 * addition, ap_scan has to be set to 2 for IBSS. WPA-None requires
-	 * following network block options: proto=WPA, key_mgmt=WPA-NONE,
-	 * pairwise=NONE, group=TKIP (or CCMP, but not both), and psk must also
-	 * be set (either directly or using ASCII passphrase).
+	 * Note: IBSS can only be used with key_mgmt NONE (plaintext and static
+	 * WEP) and WPA-PSK (with proto=RSN). In addition, key_mgmt=WPA-NONE
+	 * (fixed group key TKIP/CCMP) is available for backwards compatibility,
+	 * but its use is deprecated. WPA-None requires following network block
+	 * options: proto=WPA, key_mgmt=WPA-NONE, pairwise=NONE, group=TKIP (or
+	 * CCMP, but not both), and psk must also be set (either directly or
+	 * using ASCII passphrase).
 	 */
 	enum wpas_mode {
 		WPAS_MODE_INFRA = 0,

wpa_supplicant/wpa_supplicant.conf

@@ -506,9 +506,10 @@ fast_reauth=1
 # 0 = infrastructure (Managed) mode, i.e., associate with an AP (default)
 # 1 = IBSS (ad-hoc, peer-to-peer)
 # 2 = AP (access point)
-# Note: IBSS can only be used with key_mgmt NONE (plaintext and static WEP)
-# and key_mgmt=WPA-NONE (fixed group key TKIP/CCMP). WPA-None requires
-# following network block options:
+# Note: IBSS can only be used with key_mgmt NONE (plaintext and static WEP) and
+# WPA-PSK (with proto=RSN). In addition, key_mgmt=WPA-NONE (fixed group key
+# TKIP/CCMP) is available for backwards compatibility, but its use is
+# deprecated. WPA-None requires following network block options:
 # proto=WPA, key_mgmt=WPA-NONE, pairwise=NONE, group=TKIP (or CCMP, but not
 # both), and psk must also be set.
 #
@@ -1163,7 +1164,19 @@ network={
 }
 
 
-# IBSS/ad-hoc network with WPA-None/TKIP.
+# IBSS/ad-hoc network with RSN
+network={
+	ssid="ibss-rsn"
+	key_mgmt=WPA-PSK
+	proto=RSN
+	psk="12345678"
+	mode=1
+	frequency=2412
+	pairwise=CCMP
+	group=CCMP
+}
+
+# IBSS/ad-hoc network with WPA-None/TKIP (deprecated)
 network={
 	ssid="test adhoc"
 	mode=1