From aa844c538bf698eba5799526ca1d246fec9503eb Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Sun, 30 Dec 2007 04:12:04 +0100
Subject: [PATCH] Add carrier detection callbacks and driver data functions

---
 include/iface.h | 19 ++++++++++++++++++-
 src/iface.c     |  5 +++++
 src/rtnl.c      | 19 ++++++++++++++-----
 3 files changed, 37 insertions(+), 6 deletions(-)

diff --git a/include/iface.h b/include/iface.h
index 930abe79..d4eb2134 100644
--- a/include/iface.h
+++ b/include/iface.h
@@ -63,7 +63,6 @@ struct connman_network {
 };
 
 struct connman_iface {
-	struct connman_iface_driver *driver;
 	char *path;
 	char *udi;
 	char *sysfs;
@@ -73,6 +72,9 @@ struct connman_iface {
 	enum connman_iface_flags flags;
 	enum connman_iface_state state;
 	struct connman_ipv4 ipv4;
+
+	struct connman_iface_driver *driver;
+	void *driver_data;
 };
 
 struct connman_iface_driver {
@@ -90,6 +92,7 @@ struct connman_iface_driver {
 	int (*connect) (struct connman_iface *iface,
 					struct connman_network *network);
 
+	void (*rtnl_carrier) (struct connman_iface *iface, int carrier);
 	void (*rtnl_wireless) (struct connman_iface *iface,
 					void *data, unsigned short len);
 };
@@ -97,9 +100,23 @@ struct connman_iface_driver {
 extern int connman_iface_register(struct connman_iface_driver *driver);
 extern void connman_iface_unregister(struct connman_iface_driver *driver);
 
+static inline void *connman_iface_get_data(struct connman_iface *iface)
+{
+	return iface->driver_data;
+}
+
+static inline void connman_iface_set_data(struct connman_iface *iface,
+								void *data)
+{
+	iface->driver_data = data;
+}
+
 extern int connman_iface_update(struct connman_iface *iface,
 					enum connman_iface_state state);
 
+extern void connman_iface_indicate_carrier(struct connman_iface *iface,
+							int carrier);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/iface.c b/src/iface.c
index 72bc142c..a641bf33 100644
--- a/src/iface.c
+++ b/src/iface.c
@@ -108,6 +108,11 @@ int connman_iface_update(struct connman_iface *iface,
 	return 0;
 }
 
+void connman_iface_indicate_carrier(struct connman_iface *iface, int carrier)
+{
+	DBG("iface %p carrier %d", iface, carrier);
+}
+
 static DBusMessage *enable_iface(DBusConnection *conn,
 					DBusMessage *msg, void *data)
 {
diff --git a/src/rtnl.c b/src/rtnl.c
index 726d4917..33031ffc 100644
--- a/src/rtnl.c
+++ b/src/rtnl.c
@@ -43,6 +43,12 @@ static inline void print_char(struct rtattr *attr, const char *name)
 						(char *) RTA_DATA(attr));
 }
 
+static inline void print_byte(struct rtattr *attr, const char *name)
+{
+	printf("  attr %s (len %d) 0x%02x\n", name, RTA_PAYLOAD(attr),
+					*((unsigned char *) RTA_DATA(attr)));
+}
+
 static inline void print_attr(struct rtattr *attr, const char *name)
 {
 	if (name)
@@ -71,9 +77,12 @@ static void rtnl_link(struct nlmsghdr *hdr)
 	if ((iface->flags & CONNMAN_IFACE_FLAG_RTNL) == 0)
 		return;
 
-	if (iface->carrier != (msg->ifi_flags & IFF_RUNNING)) {
-		iface->carrier = (msg->ifi_flags & IFF_RUNNING);
-		DBG("carrier %s", iface->carrier ? "on" : "off");
+	if (iface->carrier != ((msg->ifi_flags & IFF_RUNNING) != 0)) {
+		iface->carrier = ((msg->ifi_flags & IFF_RUNNING) != 0);
+		if (iface->driver->rtnl_carrier)
+			iface->driver->rtnl_carrier(iface, iface->carrier);
+		else
+			connman_iface_indicate_carrier(iface, iface->carrier);
 	}
 
 	for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
@@ -127,10 +136,10 @@ static void rtnl_link(struct nlmsghdr *hdr)
 			print_attr(attr, "weight");
 			break;
 		case IFLA_OPERSTATE:
-			print_attr(attr, "operstate");
+			print_byte(attr, "operstate");
 			break;
 		case IFLA_LINKMODE:
-			print_attr(attr, "linkmode");
+			print_byte(attr, "linkmode");
 			break;
 		default:
 			print_attr(attr, NULL);
-- 
2.34.1