network: add lxc_log_configured_netdevs()

src/lxc/conf.c

@@ -77,6 +77,7 @@
 #include "caps.h"       /* for lxc_caps_last_cap() */
 #include "cgroup.h"
 #include "conf.h"
+#include "confile_utils.h"
 #include "error.h"
 #include "log.h"
 #include "lxcaufs.h"
@@ -2944,6 +2945,8 @@ int lxc_create_network(struct lxc_handler *handler)
 	if (!am_root)
 		return 0;
 
+	lxc_log_configured_netdevs(handler->conf);
+
 	lxc_list_for_each(iterator, network) {
 
 		netdev = iterator->elem;

src/lxc/confile_utils.c

@@ -235,3 +235,61 @@ struct lxc_netdev *lxc_get_netdev_by_idx(struct lxc_conf *conf,
 
 	return netdev;
 }
+
+void lxc_log_configured_netdevs(const struct lxc_conf *conf)
+{
+	struct lxc_netdev *netdev;
+	struct lxc_list *it = (struct lxc_list *)&conf->network;;
+
+	if ((conf->loglevel != LXC_LOG_LEVEL_TRACE) &&
+	    (lxc_log_get_level() != LXC_LOG_LEVEL_TRACE))
+		return;
+
+	if (lxc_list_empty(it)) {
+		TRACE("container has no networks configured");
+		return;
+	}
+
+	lxc_list_for_each(it, &conf->network) {
+		netdev = it->elem;
+
+		TRACE("index: %d", netdev->idx);
+		switch (netdev->type) {
+		case LXC_NET_VETH:
+			TRACE("type: veth");
+			break;
+		case LXC_NET_MACVLAN:
+			TRACE("type: macvlan");
+			break;
+		case LXC_NET_VLAN:
+			TRACE("type: vlan");
+			break;
+		case LXC_NET_PHYS:
+			TRACE("type: phys");
+			break;
+		case LXC_NET_EMPTY:
+			TRACE("type: empty");
+			break;
+		case LXC_NET_NONE:
+			TRACE("type: none");
+			break;
+		default:
+			ERROR("invalid network type %d", netdev->type);
+			return;
+		}
+
+		TRACE("flags: %s", netdev->flags == IFF_UP ? "up" : "none");
+		if (netdev->link)
+			TRACE("link: %s", netdev->link);
+		if (netdev->name)
+			TRACE("name: %s", netdev->name);
+		if (netdev->hwaddr)
+			TRACE("hwaddr: %s", netdev->hwaddr);
+		if (netdev->mtu)
+			TRACE("mtu: %s", netdev->mtu);
+		if (netdev->upscript)
+			TRACE("upscript: %s", netdev->upscript);
+		if (netdev->downscript)
+			TRACE("downscript: %s", netdev->downscript);
+	}
+}

src/lxc/confile_utils.h

@@ -32,5 +32,6 @@ extern struct lxc_netdev *lxc_find_netdev_by_idx(struct lxc_conf *conf,
 						 unsigned int idx);
 extern struct lxc_netdev *lxc_get_netdev_by_idx(struct lxc_conf *conf,
 						unsigned int idx);
+extern void lxc_log_configured_netdevs(const struct lxc_conf *conf);
 
 #endif /* __LXC_CONFILE_UTILS_H */