[HICN-243] Adding router plugin

The original package is https://gerrit.fd.io/r/#/c/15062/ which was
compatible with VPP 18.10. This patch is the modification of the original
to be compatible with VPP 19.04. It was tested with FRR (i.e., OSPF).
Change-Id: I85d579b26be2ef68f1b4a1d54e5c599b3665574b
Signed-off-by: masoud hemmatpour <mhemmatp@cisco.com>

1 files changed, 203 insertions, 0 deletions

diff --git a/utils/extras/devices/rtnetlink/test.c b/utils/extras/devices/rtnetlink/test.c
new file mode 100644
index 000000000..031748dd3
--- /dev/null
+++ b/utils/extras/devices/rtnetlink/test.c
@@ -0,0 +1,203 @@
+/*
+ * 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.
+ */
+
+#include <librtnl/netns.h>
+
+#include <vnet/plugin/plugin.h>
+#include <librtnl/mapper.h>
+#include <vnet/ip/ip.h>
+#include <vnet/fib/fib.h>
+#include <vnet/fib/ip4_fib.h>
+#include <vnet/fib/ip6_fib.h>
+
+u32 handles[10];
+
+static void
+test_notify(void *obj, netns_type_t type, u32 flags, uword opaque) {
+  u32 index = (u32) opaque;
+  const char *action = (flags & NETNS_F_ADD)?"add":(flags & NETNS_F_DEL)?"del":"mod";
+
+  switch (type) {
+    case NETNS_TYPE_ADDR:
+      clib_warning("%d: addr %s %U", index, action, format_ns_addr, (ns_addr_t *)obj);
+      break;
+    case NETNS_TYPE_ROUTE:
+      clib_warning("%d: route %s %U", index, action, format_ns_route, (ns_route_t *)obj);
+      break;
+    case NETNS_TYPE_LINK:
+      clib_warning("%d:link %s %U", index, action, format_ns_link, (ns_link_t *)obj);
+      break;
+    case NETNS_TYPE_NEIGH:
+      clib_warning("%d: neigh %s %U", index, action, format_ns_neigh, (ns_neigh_t *)obj);
+      break;
+  }
+}
+
+static clib_error_t *
+test_enable_command_fn (vlib_main_t * vm,
+                        unformat_input_t * input,
+                        vlib_cli_command_t * cmd)
+{
+  char *nsname = 0;
+  u32 index;
+  if (!unformat(input, "%s", &nsname)) {
+    return clib_error_return(0, "unknown input `%U'",
+                             format_unformat_error, input);
+  }
+  if (!unformat(input, "%d", &index)) {
+    return clib_error_return(0, "unknown input `%U'",
+                             format_unformat_error, input);
+  }
+
+  if (!strcmp(nsname, "default"))
+    nsname[0] = 0;
+
+  netns_sub_t sub;
+  sub.notify = test_notify;
+  sub.opaque = index;
+  handles[index] = netns_open(nsname, &sub);
+  if (handles[index] == ~0) {
+    return clib_error_create("Could not open netns with name %s", nsname);
+  }
+  return 0;
+}
+
+static clib_error_t *
+test_disable_command_fn (vlib_main_t * vm,
+                         unformat_input_t * input,
+                         vlib_cli_command_t * cmd)
+{
+  u32 index;
+  if (!unformat(input, "%d", &index)) {
+    return clib_error_return(0, "unknown input `%U'",
+                             format_unformat_error, input);
+  }
+
+  netns_close(handles[index]);
+  return 0;
+}
+
+VLIB_CLI_COMMAND (rtnl_enable_command, static) = {
+    .path = "test netns enable",
+    .short_help = "test netns enable [<ns-name>|default] <index>",
+    .function = test_enable_command_fn,
+};
+
+VLIB_CLI_COMMAND (rtnl_disable_command, static) = {
+    .path = "test netns disable",
+    .short_help = "test rtnl disable <index>",
+    .function = test_disable_command_fn,
+};
+
+u32 mapper_indexes[10];
+
+static clib_error_t *
+mapper_ns_add_command_fn (vlib_main_t * vm,
+                         unformat_input_t * input,
+                         vlib_cli_command_t * cmd)
+{
+  u32 index;
+  char *nsname;
+  u32 table_id;
+  if (!unformat(input, "%d", &index))
+    return clib_error_return(0, "invalid index `%U'",
+                             format_unformat_error, input);
+  if (!unformat(input, "%s", &nsname))
+    return clib_error_return(0, "invalid nsname `%U'",
+                             format_unformat_error, input);
+  if (!unformat(input, "%d", &table_id))
+      return clib_error_return(0, "invalid fib index `%U'",
+                               format_unformat_error, input);
+
+  if (!strcmp(nsname, "default"))
+    nsname[0] = 0;
+
+  u32 fib4 = ip4_fib_index_from_table_id(table_id);
+  u32 fib6 = ip6_fib_index_from_table_id(table_id);
+
+  if (mapper_add_ns(nsname, fib4, fib6, &mapper_indexes[index]))
+    return clib_error_return(0, "Could not add ns %s", nsname);
+  return 0;
+}
+
+VLIB_CLI_COMMAND (mapper_ns_add_command, static) = {
+    .path = "test mapper ns add",
+    .short_help = "test mapper ns add <index> <nsname> <table-id>",
+    .function = mapper_ns_add_command_fn,
+};
+
+static clib_error_t *
+mapper_ns_del_command_fn (vlib_main_t * vm,
+                         unformat_input_t * input,
+                         vlib_cli_command_t * cmd)
+{
+  u32 index;
+  if (!unformat(input, "%d", &index))
+    return clib_error_return(0, "invalid index `%U'",
+                             format_unformat_error, input);
+
+  if (mapper_del_ns(mapper_indexes[index]))
+    return clib_error_return(0, "Could not del ns %d", index);
+  return 0;
+}
+
+VLIB_CLI_COMMAND (mapper_ns_del_command, static) = {
+    .path = "test mapper ns delete",
+    .short_help = "test mapper ns delete <index>",
+    .function = mapper_ns_del_command_fn,
+};
+
+static clib_error_t *
+mapper_iface_command_fn (vlib_main_t * vm,
+                         unformat_input_t * input,
+                         vlib_cli_command_t * cmd)
+{
+  u32 nsindex;
+  u32 ifindex;
+  u32 sw_if_index;
+  int del = 0;
+  if (!unformat(input, "%d", &nsindex))
+    return clib_error_return(0, "invalid nsindex `%U'",
+                             format_unformat_error, input);
+  if (!unformat(input, "%d", &ifindex))
+    return clib_error_return(0, "invalid ifindex `%U'",
+                             format_unformat_error, input);
+  if (!unformat(input, "%d", &sw_if_index))
+    return clib_error_return(0, "invalid sw_if_index `%U'",
+                             format_unformat_error, input);
+  if (unformat(input, "del"))
+    del = 1;
+
+  clib_warning("mapper_add_del %d %d %d %d", mapper_indexes[nsindex], ifindex, sw_if_index, del);
+
+  if (mapper_add_del(mapper_indexes[nsindex], ifindex, sw_if_index, del))
+    return clib_error_return(0, "Could not add iface");
+  return 0;
+}
+
+
+VLIB_CLI_COMMAND (mapper_iface_command, static) = {
+    .path = "test mapper iface",
+    .short_help = "test mapper iface <nsindex> <linux-ifindex> <sw_if_index> [del]",
+    .function = mapper_iface_command_fn,
+};
+
+/* *INDENT-OFF* */
+VLIB_PLUGIN_REGISTER () = {
+  //.version = VPP_BUILD_VER, FIXME
+  .description = "netlink",
+};
+/* *INDENT-ON* */
+