From 10b58b50297bd2a5c65b18663da02f472ac8f972 Mon Sep 17 00:00:00 2001
From: Jouni Malinen <j@w1.fi>
Date: Sat, 17 May 2014 00:01:45 +0300
Subject: [PATCH] TNC: Allow TNC to be enabled dynamically

Previously, hostapd had to be started with at least one of the
configuration files enabling TNC for TNC to be usable. Change this to
allow TNC to be enabled when the first interface with TNC enabled gets
added during runtime.

Signed-off-by: Jouni Malinen <j@w1.fi>
---
 src/ap/hostapd.c      | 8 ++++++++
 src/eap_server/tncs.c | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c
index 391d77460..b7e118c06 100644
--- a/src/ap/hostapd.c
+++ b/src/ap/hostapd.c
@@ -14,6 +14,7 @@
 #include "common/wpa_ctrl.h"
 #include "radius/radius_client.h"
 #include "radius/radius_das.h"
+#include "eap_server/tncs.h"
 #include "hostapd.h"
 #include "authsrv.h"
 #include "sta_info.h"
@@ -673,6 +674,13 @@ static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
 	wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
 		   __func__, hapd, hapd->conf->iface, first);
 
+#ifdef EAP_SERVER_TNC
+	if (hapd->conf->tnc && tncs_global_init() < 0) {
+		wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
+		return -1;
+	}
+#endif /* EAP_SERVER_TNC */
+
 	if (hapd->started) {
 		wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
 			   __func__, hapd->conf->iface);
diff --git a/src/eap_server/tncs.c b/src/eap_server/tncs.c
index c0b82455e..dc6f689c0 100644
--- a/src/eap_server/tncs.c
+++ b/src/eap_server/tncs.c
@@ -1115,6 +1115,9 @@ int tncs_global_init(void)
 {
 	struct tnc_if_imv *imv;
 
+	if (tncs_global_data)
+		return 0;
+
 	tncs_global_data = os_zalloc(sizeof(*tncs_global_data));
 	if (tncs_global_data == NULL)
 		return -1;