1 files changed, 46 insertions, 0 deletions
diff --git a/src/utils/kxdpgun/ip_route.h b/src/utils/kxdpgun/ip_route.h
new file mode 100644
index 0000000..c35c25b
--- /dev/null
+++ b/src/utils/kxdpgun/ip_route.h
@@ -0,0 +1,46 @@
+/*  Copyright (C) 2022 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <sys/socket.h>
+
+/*!
+ * \brief Get route to an IPv4/6 from system routing table.
+ *
+ * \param ip     IPv4 or IPv6 to search route to.
+ * \param via    Out: gateway (first hop) on the route, or AF_UNSPEC if same subnet.
+ * \param src    Out: local outgoing IP address on the route.
+ * \param dev    Out: local network interface on the route (you must pre-allocate IFNAMSIZ bytes!).
+ *
+ * \return 0 on success, negative errno otherwise.
+ */
+int ip_route_get(const struct sockaddr_storage *ip,
+                 struct sockaddr_storage *via,
+                 struct sockaddr_storage *src,
+                 char *dev);
+
+/*!
+ * \brief Obtain neighbour's MAC addr from system neighbour table.
+ *
+ * \param ip             IPv4 or IPv6 of the neighbour in question.
+ * \param dummy_sendto   Attempt sendto() to target IP in order to let the system fill the neighbour table.
+ * \param mac            Out: MAC address of the neighbour (you must pre-allocate ETH_ALEN bytes!).
+ *
+ * \return 0 on success, -ENOENT if neighbour not found, negative errno otherwise.
+ */
+int ip_neigh_get(const struct sockaddr_storage *ip, bool dummy_sendto, uint8_t *mac);