gatppp: Add API for setting suspend callback

In situations where the PPP stream can be suspended by the peer, e.g. in
the server role using '+++'

2 files changed, 26 insertions, 0 deletions

diff --git a/gatchat/gatppp.c b/gatchat/gatppp.c
index 993b5ea2..c7768118 100644
--- a/gatchat/gatppp.c
+++ b/gatchat/gatppp.c
@@ -76,6 +76,8 @@ struct _GAtPPP {
 	gpointer debug_data;
 	gboolean sta_pending;
 	guint ppp_dead_source;
+	GAtSuspendFunc suspend_func;
+	gpointer suspend_data;
 };
 
 void ppp_debug(GAtPPP *ppp, const char *str)
@@ -467,6 +469,28 @@ void g_at_ppp_set_debug(GAtPPP *ppp, GAtDebugFunc func, gpointer user_data)
 	ppp->debug_data = user_data;
 }
 
+static void ppp_proxy_suspend_net_interface(gpointer user_data)
+{
+	GAtPPP *ppp = user_data;
+
+	ppp_net_suspend_interface(ppp->net);
+
+	if (ppp->suspend_func)
+		ppp->suspend_func(ppp->suspend_data);
+}
+
+void g_at_ppp_set_suspend_function(GAtPPP *ppp, GAtSuspendFunc func,
+					gpointer user_data)
+{
+	if (ppp == NULL)
+		return;
+
+	ppp->suspend_func = func;
+	ppp->suspend_data = user_data;
+	g_at_hdlc_set_suspend_function(ppp->hdlc,
+					ppp_proxy_suspend_net_interface, ppp);
+}
+
 void g_at_ppp_shutdown(GAtPPP *ppp)
 {
 	if (ppp->phase == PPP_PHASE_DEAD || ppp->phase == PPP_PHASE_TERMINATION)
diff --git a/gatchat/gatppp.h b/gatchat/gatppp.h
index fb5de4c3..9464ffd3 100644
--- a/gatchat/gatppp.h
+++ b/gatchat/gatppp.h
@@ -60,6 +60,8 @@ void g_at_ppp_set_connect_function(GAtPPP *ppp, GAtPPPConnectFunc callback,
 					gpointer user_data);
 void g_at_ppp_set_disconnect_function(GAtPPP *ppp, GAtPPPDisconnectFunc func,
 					gpointer user_data);
+void g_at_ppp_set_suspend_function(GAtPPP *ppp, GAtSuspendFunc func,
+					gpointer user_data);
 void g_at_ppp_set_debug(GAtPPP *ppp, GAtDebugFunc func, gpointer user_data);
 void g_at_ppp_shutdown(GAtPPP *ppp);
 void g_at_ppp_ref(GAtPPP *ppp);