1 files changed, 19 insertions, 0 deletions

diff --git a/ffd/ffd.c b/ffd/ffd.c
index 5f17446..ccba14d 100644
--- a/ffd/ffd.c
+++ b/ffd/ffd.c
@@ -191,6 +191,17 @@ static inline ffd_neigh_t* get_tlv_neigh(handle_tlv_arg_t *arg) {
 	return ffd_neigh_get(arg->iface, arg->addr);
 }
 
+static void handle_tlv_ack_req(const ffd_tlv_ack_req_t *tlv_req, size_t len, handle_tlv_arg_t *arg) {
+	if (len < sizeof(ffd_tlv_ack_req_t)) {
+		fprintf(stderr, "warn: received short acknowledement request TLV.\n");
+		return;
+	}
+
+	ffd_neigh_t *neigh = get_tlv_neigh(arg);
+
+	ffd_send_ack(arg->iface, neigh, ntohs(tlv_req->nonce));
+}
+
 static void handle_tlv_hello(const ffd_tlv_hello_t *tlv_hello, size_t len, handle_tlv_arg_t *arg) {
 	if (len < sizeof(ffd_tlv_hello_t)) {
 		fprintf(stderr, "warn: received short hello TLV.\n");
@@ -392,6 +403,14 @@ static void handle_tlv_announce_req(const ffd_tlv_announce_req_t *tlv_req, size_
 
 static void handle_tlv(ffd_tlv_type_t type, const void *data, size_t len, void *arg) {
 	switch (type) {
+	case TLV_ACK_REQ:
+		handle_tlv_ack_req(data, len, arg);
+		return;
+
+	case TLV_ACK:
+		/* we don't send ack reqs */
+		return;
+
 	case TLV_HELLO:
 		handle_tlv_hello(data, len, arg);
 		return;