1 files changed, 145 insertions, 0 deletions
diff --git a/utils/extras/devices/rtnetlink/netns.h b/utils/extras/devices/rtnetlink/netns.h
new file mode 100644
index 000000000..53effe5ce
--- /dev/null
+++ b/utils/extras/devices/rtnetlink/netns.h
@@ -0,0 +1,145 @@
+/*
+ * 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 NETNS_H_
+#define NETNS_H_
+
+#include <vlib/vlib.h>
+
+#include <sys/socket.h>
+#include <linux/rtnetlink.h>
+#include <linux/netlink.h>
+#include <net/if.h>
+
+#include "rtnl.h"
+
+/*include it for 'struct mpls_label'*/
+#include <linux/mpls.h>
+/*so far depth is fixed, looking into ways to be dynamic*/
+#define MPLS_STACK_DEPTH 7
+
+typedef struct {
+  struct ifinfomsg ifi;
+  u8 hwaddr[IFHWADDRLEN];
+  u8 broadcast[IFHWADDRLEN];
+  u8 ifname[IFNAMSIZ];
+  u32 mtu;
+  u32 master;
+  u8 qdisc[IFNAMSIZ];
+  struct rtnl_link_stats stats; //This struct is big and only comes as a response to a request
+  f64 last_updated;
+} ns_link_t;
+
+typedef struct {
+  struct rtmsg rtm;
+  u8 dst[16];
+  u8 src[16];
+  u8 via[16];
+  u8 prefsrc[16];
+  u32 iif;
+  u32 oif;
+  u32 table;
+  u8 gateway[16];
+  u32 priority;
+  struct rta_cacheinfo cacheinfo;
+  struct mpls_label encap[MPLS_STACK_DEPTH];
+  f64 last_updated;
+} ns_route_t;
+
+typedef struct {
+  struct ifaddrmsg ifaddr;
+  u8 addr[16];
+  u8 local[16];
+  u8 label[IFNAMSIZ];
+  u8 broadcast[16];
+  u8 anycast[16];
+  struct ifa_cacheinfo cacheinfo;
+  f64 last_updated;
+} ns_addr_t;
+
+typedef struct {
+  struct ndmsg nd;
+  u8 dst[16];
+  u8 lladdr[IFHWADDRLEN];
+  u32 probes;
+  struct nda_cacheinfo cacheinfo;
+  f64 last_updated;
+} ns_neigh_t;
+
+typedef struct {
+  char name[RTNL_NETNS_NAMELEN + 1];
+  ns_link_t  *links;
+  ns_route_t *routes;
+  ns_addr_t  *addresses;
+  ns_neigh_t *neighbors;
+} netns_t;
+
+
+typedef enum {
+  NETNS_TYPE_LINK,
+  NETNS_TYPE_ROUTE,
+  NETNS_TYPE_ADDR,
+  NETNS_TYPE_NEIGH,
+} netns_type_t;
+
+//Flags used in notification functions call
+#define NETNS_F_ADD    0x01
+#define NETNS_F_DEL    0x02
+
+typedef struct {
+  void (*notify)(void *obj, netns_type_t type, u32 flags, uword opaque);
+  uword opaque;
+} netns_sub_t;
+
+/*
+ * Subscribe for events related to the given namespace.
+ * When another subscriber already uses the namespace,
+ * this call will not trigger updates for already
+ * existing routes (This is to protect against
+ * synch. Vs asynch. issues).
+ */
+u32 netns_open(char *name, netns_sub_t *sub);
+
+/*
+ * Retrieves the namespace structure associated with a
+ * given namespace handler.
+ */
+netns_t *netns_getns(u32 handle);
+
+/*
+ * Terminates a subscriber session.
+ */
+void netns_close(u32 handle);
+
+/*
+ * Calls the callback associated with the handle
+ * for all existing objects with the flags
+ * set to (del?NETNS_F_DEL:NETNS_F_ADD).
+ */
+void netns_callme(u32 handle, char del);
+
+/*
+ * netns struct format functions.
+ * Taking the struct as single argument.
+ */
+u8 *format_ns_neigh(u8 *s, va_list *args);
+u8 *format_ns_addr(u8 *s, va_list *args);
+u8 *format_ns_route(u8 *s, va_list *args);
+u8 *format_ns_link(u8 *s, va_list *args);
+
+u8 *format_ns_object(u8 *s, va_list *args);
+u8 *format_ns_flags(u8 *s, va_list *args);
+
+#endif