linux-cp: Linux Interface Mirroring for Control Plane Integration

Type: feature

please see FEATURE.yaml for details.

Signed-off-by: Neale Ranns <nranns@cisco.com>
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Signed-off-by: Jon Loeliger <jdl@netgate.com>
Signed-off-by: Pim van Pelt <pim@ipng.nl>
Change-Id: I04a45c15c0838906aa787e06660fa29f39f755fa

1 files changed, 236 insertions, 0 deletions

diff --git a/src/plugins/linux-cp/lcp_cli.c b/src/plugins/linux-cp/lcp_cli.c
new file mode 100644
index 00000000000..3b0598c1b66
--- /dev/null
+++ b/src/plugins/linux-cp/lcp_cli.c
@@ -0,0 +1,236 @@
+/* Hey Emacs use -*- mode: C -*- */
+/*
+ * Copyright 2020 Rubicon Communications, LLC.
+ *
+ * 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 <sys/socket.h>
+#include <linux/if.h>
+
+#include <vnet/vnet.h>
+#include <vnet/plugin/plugin.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vpp/app/version.h>
+#include <vnet/format_fns.h>
+
+#include <plugins/linux-cp/lcp_interface.h>
+
+static clib_error_t *
+lcp_itf_pair_create_command_fn (vlib_main_t *vm, unformat_input_t *input,
+				vlib_cli_command_t *cmd)
+{
+  unformat_input_t _line_input, *line_input = &_line_input;
+  vnet_main_t *vnm = vnet_get_main ();
+  u32 sw_if_index;
+  u8 *host_if_name;
+  lip_host_type_t host_if_type;
+  u8 *ns;
+  int r;
+
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  sw_if_index = ~0;
+  host_if_name = ns = NULL;
+  host_if_type = LCP_ITF_HOST_TAP;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (line_input, "%d", &sw_if_index))
+	;
+      else if (unformat (line_input, "%U", unformat_vnet_sw_interface, vnm,
+			 &sw_if_index))
+	;
+      else if (unformat (line_input, "host-if %s", &host_if_name))
+	;
+      else if (unformat (line_input, "netns %s", &ns))
+	;
+      else if (unformat (line_input, "tun"))
+	host_if_type = LCP_ITF_HOST_TUN;
+      else
+	{
+	  unformat_free (line_input);
+	  vec_free (host_if_name);
+	  vec_free (ns);
+	  return clib_error_return (0, "unknown input `%U'",
+				    format_unformat_error, input);
+	}
+    }
+
+  unformat_free (line_input);
+
+  if (sw_if_index == ~0)
+    {
+      vec_free (host_if_name);
+      vec_free (ns);
+      return clib_error_return (0, "interface name or sw_if_index required");
+    }
+
+  if (vec_len (ns) >= LCP_NS_LEN)
+    {
+      vec_free (host_if_name);
+      vec_free (ns);
+      return clib_error_return (
+	0, "Namespace name should be fewer than %d characters", LCP_NS_LEN);
+    }
+
+  r = lcp_itf_pair_create (sw_if_index, host_if_name, host_if_type, ns);
+
+  vec_free (host_if_name);
+  vec_free (ns);
+
+  if (r)
+    return clib_error_return (0, "linux-cp pair creation failed (%d)", r);
+
+  return 0;
+}
+
+VLIB_CLI_COMMAND (lcp_itf_pair_create_command, static) = {
+  .path = "lcp create",
+  .short_help = "lcp create <sw_if_index>|<if-name> host-if <host-if-name> "
+		"netns <namespace> [tun]",
+  .function = lcp_itf_pair_create_command_fn,
+};
+
+static clib_error_t *
+lcp_default_netns_command_fn (vlib_main_t *vm, unformat_input_t *input,
+			      vlib_cli_command_t *cmd)
+{
+  unformat_input_t _line_input, *line_input = &_line_input;
+  u8 *ns;
+  int r;
+
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  ns = 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (line_input, "netns %s", &ns))
+	;
+      else if (unformat (line_input, "clear netns"))
+	;
+    }
+
+  unformat_free (line_input);
+
+  vlib_cli_output (vm, "lcp set default netns '%s'\n", (char *) ns);
+
+  r = lcp_set_default_ns (ns);
+
+  if (r)
+    return clib_error_return (0, "linux-cp set default netns failed (%d)", r);
+
+  return 0;
+}
+
+VLIB_CLI_COMMAND (lcp_default_netns_command, static) = {
+  .path = "lcp default",
+  .short_help = "lcp default netns [<namespace>]",
+  .function = lcp_default_netns_command_fn,
+};
+
+static clib_error_t *
+lcp_itf_pair_delete_command_fn (vlib_main_t *vm, unformat_input_t *input,
+				vlib_cli_command_t *cmd)
+{
+  vnet_main_t *vnm = vnet_get_main ();
+  unformat_input_t _line_input, *line_input = &_line_input;
+  u32 sw_if_index;
+  int r;
+
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  sw_if_index = ~0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (line_input, "%d", &sw_if_index))
+	;
+      else if (unformat (line_input, "%U", unformat_vnet_sw_interface, vnm,
+			 &sw_if_index))
+	;
+      else
+	return clib_error_return (0, "unknown input `%U'",
+				  format_unformat_error, input);
+    }
+
+  unformat_free (line_input);
+
+  if (sw_if_index == ~0)
+    return clib_error_return (0, "interface name or sw_if_index required");
+
+  r = lcp_itf_pair_delete (sw_if_index);
+
+  if (r)
+    return clib_error_return (0, "linux-cp pair deletion failed (%d)", r);
+  return 0;
+}
+
+VLIB_CLI_COMMAND (lcp_itf_pair_delete_command, static) = {
+  .path = "lcp delete",
+  .short_help = "lcp delete <sw_if_index>|<if-name>",
+  .function = lcp_itf_pair_delete_command_fn,
+};
+
+static clib_error_t *
+lcp_itf_pair_show_cmd (vlib_main_t *vm, unformat_input_t *input,
+		       vlib_cli_command_t *cmd)
+{
+  vnet_main_t *vnm = vnet_get_main ();
+  u32 phy_sw_if_index;
+
+  phy_sw_if_index = ~0;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (input, "phy %U", unformat_vnet_sw_interface, vnm,
+		    &phy_sw_if_index))
+	;
+      else
+	return clib_error_return (0, "unknown input '%U'",
+				  format_unformat_error, input);
+    }
+
+  lcp_itf_pair_show (phy_sw_if_index);
+
+  return 0;
+}
+
+VLIB_CLI_COMMAND (lcp_itf_pair_show_cmd_node, static) = {
+  .path = "show lcp",
+  .function = lcp_itf_pair_show_cmd,
+  .short_help = "show lcp [phy <interface>]",
+  .is_mp_safe = 1,
+};
+
+clib_error_t *
+lcp_cli_init (vlib_main_t *vm)
+{
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (lcp_cli_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */