1 files changed, 60 insertions, 0 deletions
diff --git a/utils/extras/devices/rtnetlink/rtnl.h b/utils/extras/devices/rtnetlink/rtnl.h
new file mode 100644
index 000000000..3f96252c1
--- /dev/null
+++ b/utils/extras/devices/rtnetlink/rtnl.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2016-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef RTNL_H_
+#define RTNL_H_
+
+#include <vlib/vlib.h>
+
+#include <linux/netlink.h>
+#include <vppinfra/clib.h>
+
+typedef enum {
+  RTNL_ERR_UNKNOWN,
+} rtnl_error_t;
+
+#define RTNL_NETNS_NAMELEN 128
+
+/*
+ * RTNL stream implements an RTNL overlay
+ * for receiving continuous updates for a given namespace.
+ * When the stream is initially opened, dump requests are sent
+ * in order to retrieve the original state.
+ * handle_error is called any time synchronization cannot be
+ * achieved. When called, state is reset to its original state and
+ * new dump requests are sent.
+ */
+
+typedef struct rtnl_stream_s {
+  char name[RTNL_NETNS_NAMELEN + 1];
+  void (*recv_message)(struct nlmsghdr *hdr, uword opaque);
+  void (*error)(rtnl_error_t err, uword opaque);
+  uword opaque;
+} rtnl_stream_t;
+
+u32 rtnl_stream_open(rtnl_stream_t *template);
+void rtnl_stream_close(u32 handle);
+
+/*
+ * Executes a function in a synchronously executed thread in the
+ * given namespace.
+ * Returns 0 on success, and -errno on error.
+ */
+int rtnl_exec_in_namespace(u32 handle, void *(*fn)(void *), void *arg, void **ret);
+int rtnl_exec_in_namespace_by_name(char *nsname, void *(*fn)(void *), void *arg, void **ret);
+
+u8 *format_rtnl_nsname2path(u8 *s, va_list *args);
+
+#endif