From b021a49efe0641f7c5ca763bc43e5ba73b7a1b5f Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Fri, 14 Oct 2011 00:09:16 +0200
Subject: [PATCH] proto-shell: allow proto setups without ifname (if interface
 main dev is present)

---
 dummy/netifd-proto.sh | 2 +-
 proto-shell.c         | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/dummy/netifd-proto.sh b/dummy/netifd-proto.sh
index 6182ce1..0af99b2 100755
--- a/dummy/netifd-proto.sh
+++ b/dummy/netifd-proto.sh
@@ -48,7 +48,7 @@ proto_init_update() {
 	PROTO_ROUTE6=
 	json_init
 	json_add_int action 0
-	json_add_string "ifname" "$ifname"
+	[ -n "$ifname" -a "*" != "$ifname" ] && json_add_string "ifname" "$ifname"
 	json_add_boolean "link-up" "$up"
 	[ -n "$3" ] && json_add_boolean "address-external" "$external"
 }
diff --git a/proto-shell.c b/proto-shell.c
index fdb87df..f5a5fb1 100644
--- a/proto-shell.c
+++ b/proto-shell.c
@@ -351,10 +351,10 @@ proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
 		return 0;
 	}
 
-	if (!tb[NOTIFY_IFNAME])
-		return UBUS_STATUS_INVALID_ARGUMENT;
-
-	if (!state->l3_dev.dev) {
+	if (!tb[NOTIFY_IFNAME]) {
+		if (!state->iface->main_dev.dev)
+			return UBUS_STATUS_INVALID_ARGUMENT;
+	} else if (!state->l3_dev.dev) {
 		device_add_user(&state->l3_dev,
 			device_get(blobmsg_data(tb[NOTIFY_IFNAME]), true));
 		device_claim(&state->l3_dev);
-- 
2.25.1