Accumulative patch from commit 17b8995cf5813d7c027cd7a6884700e791d72392

17b8995 Interworking: Try to use same BSS entry for storing GAS results
3db5439 Optimize Extended Capabilities element to be of minimal length
8cd6b7b hostapd/wpa_s: Use driver's extended capabilities
acb5464 Add ctrl_iface command FLUSH for clearing wpa_supplicant state
97236ce WPS: Skip rescanning after provisioning if AP was configured
4342326 Add ignore_old_scan_res configuration parameter
9599ccc WPS: Clear after_wps on new WPS connection
702621e WPS: Use latest updated BSS entry if multiple BSSID matches found
ab547b5 WPS: Add more helpful debug for invalid WPS_REG command parsing
a679c0f WPS: Allow hostapd process to control independent WPS interfaces
ccdff94 WPS AP: Add support for reconfiguration with in-memory config
8970bae nl80211: Use nla_nest_start/end instead of nla_put_nested
558d69e P2P: Omit P2P Group Info in case of no connected peers
65a32cd AP: Fix infinite loop in WPA state machine when out of random bytes
a5f61b2 Fix OLBC non-HT AP detection to check channel
69554d7 ap_list: Remove unused functions
08c99ca ap_list: Remove unused iteration list pointers
6b16917 ap_list: Remove unused fields
66f1f75 P2P: Fix provision discovery response handling in some cases
2f9b66d Extend ROAM command to handle multiple SSIDs per BSS

Change-Id: I46002b1d3bbf6e376c2ae09bcb2c824c54805bbd
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c
index 92fda56..a0ac38c 100644
--- a/src/ap/hostapd.c
+++ b/src/ap/hostapd.c
@@ -108,19 +108,10 @@
 }
 
 
-int hostapd_reload_config(struct hostapd_iface *iface)
+static void hostapd_clear_old(struct hostapd_iface *iface)
 {
-	struct hostapd_data *hapd = iface->bss[0];
-	struct hostapd_config *newconf, *oldconf;
 	size_t j;
 
-	if (iface->interfaces == NULL ||
-	    iface->interfaces->config_read_cb == NULL)
-		return -1;
-	newconf = iface->interfaces->config_read_cb(iface->config_fname);
-	if (newconf == NULL)
-		return -1;
-
 	/*
 	 * Deauthenticate all stations since the new configuration may not
 	 * allow them to use the BSS anymore.
@@ -136,6 +127,31 @@
 		radius_client_flush(iface->bss[j]->radius, 0);
 #endif /* CONFIG_NO_RADIUS */
 	}
+}
+
+
+int hostapd_reload_config(struct hostapd_iface *iface)
+{
+	struct hostapd_data *hapd = iface->bss[0];
+	struct hostapd_config *newconf, *oldconf;
+	size_t j;
+
+	if (iface->config_fname == NULL) {
+		/* Only in-memory config in use - assume it has been updated */
+		hostapd_clear_old(iface);
+		for (j = 0; j < iface->num_bss; j++)
+			hostapd_reload_bss(iface->bss[j]);
+		return 0;
+	}
+
+	if (iface->interfaces == NULL ||
+	    iface->interfaces->config_read_cb == NULL)
+		return -1;
+	newconf = iface->interfaces->config_read_cb(iface->config_fname);
+	if (newconf == NULL)
+		return -1;
+
+	hostapd_clear_old(iface);
 
 	oldconf = hapd->iconf;
 	iface->conf = newconf;