BFD: command line interface

Implement command line interface to the BFD binary APIs. Add
corresponding unit tests.

Change-Id: Ia0542d0bc4c8d78e6f7b777a08fd94ebfe4d524f
Signed-off-by: Klement Sekera <ksekera@cisco.com>

1 files changed, 900 insertions, 0 deletions

diff --git a/src/vnet/bfd/bfd_cli.c b/src/vnet/bfd/bfd_cli.c
new file mode 100644
index 00000000000..a3736d98b3c
--- /dev/null
+++ b/src/vnet/bfd/bfd_cli.c
@@ -0,0 +1,900 @@
+/*
+ * Copyright (c) 2011-2016 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.
+ */
+/**
+ * @file
+ * @brief BFD CLI implementation
+ */
+
+#include <vlib/vlib.h>
+#include <vlib/cli.h>
+#include <vppinfra/format.h>
+#include <vnet/api_errno.h>
+#include <vnet/ip/format.h>
+#include <vnet/bfd/bfd_api.h>
+#include <vnet/bfd/bfd_main.h>
+
+static u8 *
+format_bfd_session_cli (u8 * s, va_list * args)
+{
+  bfd_main_t *bm = va_arg (*args, bfd_main_t *);
+  bfd_session_t *bs = va_arg (*args, bfd_session_t *);
+  switch (bs->transport)
+    {
+    case BFD_TRANSPORT_UDP4:
+      s = format (s, "%=10u %-32s %20U %20U\n", bs->bs_idx, "IPv4 address",
+		  format_ip4_address, bs->udp.key.local_addr.ip4.as_u8,
+		  format_ip4_address, bs->udp.key.peer_addr.ip4.as_u8);
+      break;
+    case BFD_TRANSPORT_UDP6:
+      s = format (s, "%=10u %-32s %20U %20U\n", bs->bs_idx, "IPv6 address",
+		  format_ip6_address, &bs->udp.key.local_addr.ip6,
+		  format_ip6_address, &bs->udp.key.peer_addr.ip6);
+      break;
+    }
+  s = format (s, "%10s %-32s %20s %20s\n", "", "Session state",
+	      bfd_state_string (bs->local_state),
+	      bfd_state_string (bs->remote_state));
+  s = format (s, "%10s %-32s %20s %20s\n", "", "Diagnostic code",
+	      bfd_diag_code_string (bs->local_diag),
+	      bfd_diag_code_string (bs->remote_diag));
+  s = format (s, "%10s %-32s %20u %20u\n", "", "Detect multiplier",
+	      bs->local_detect_mult, bs->remote_detect_mult);
+  s = format (s, "%10s %-32s %20u %20u\n", "",
+	      "Required Min Rx Interval (usec)",
+	      bs->config_required_min_rx_usec, bs->remote_min_rx_usec);
+  s = format (s, "%10s %-32s %20u %20u\n", "",
+	      "Desired Min Tx Interval (usec)",
+	      bs->config_desired_min_tx_usec, bfd_clocks_to_usec (bm,
+								  bs->remote_desired_min_tx_clocks));
+  s =
+    format (s, "%10s %-32s %20u\n", "", "Transmit interval",
+	    bfd_clocks_to_usec (bm, bs->transmit_interval_clocks));
+  s =
+    format (s, "%10s %-32s %20s %20s\n", "", "Demand mode", "no",
+	    bs->remote_demand ? "yes" : "no");
+  s =
+    format (s, "%10s %-32s %20s\n", "", "Poll state",
+	    bfd_poll_state_string (bs->poll_state));
+  if (bs->auth.curr_key)
+    {
+      s = format (s, "%10s %-32s %20u\n", "", "Authentication config key ID",
+		  bs->auth.curr_key->conf_key_id);
+      s = format (s, "%10s %-32s %20u\n", "", "Authentication BFD key ID",
+		  bs->auth.curr_bfd_key_id);
+    }
+  return s;
+}
+
+static clib_error_t *
+show_bfd (vlib_main_t * vm, unformat_input_t * input,
+	  CLIB_UNUSED (vlib_cli_command_t * lmd))
+{
+  bfd_main_t *bm = &bfd_main;
+  bfd_session_t *bs = NULL;
+
+  if (unformat (input, "keys"))
+    {
+      bfd_auth_key_t *key = NULL;
+      u8 *s = format (NULL, "%=10s %=25s %=10s\n", "Configuration Key ID",
+		      "Type", "Use Count");
+      /* *INDENT-OFF* */
+      pool_foreach (key, bm->auth_keys, {
+        s = format (s, "%10u %-25s %10u\n", key->conf_key_id,
+                    bfd_auth_type_str (key->auth_type), key->use_count);
+      });
+      /* *INDENT-ON* */
+      vlib_cli_output (vm, "%v\n", s);
+      vlib_cli_output (vm, "Number of configured BFD keys: %lu\n",
+		       (u64) pool_elts (bm->auth_keys));
+    }
+  else if (unformat (input, "sessions"))
+    {
+      u8 *s = format (NULL, "%=10s %=32s %=20s %=20s\n", "Index", "Property",
+		      "Local value", "Remote value");
+      /* *INDENT-OFF* */
+      pool_foreach (bs, bm->sessions,
+                    { s = format (s, "%U", format_bfd_session_cli, bm, bs); });
+      /* *INDENT-ON* */
+      vlib_cli_output (vm, "%v", s);
+      vec_free (s);
+      vlib_cli_output (vm, "Number of configured BFD sessions: %lu\n",
+		       (u64) pool_elts (bm->sessions));
+    }
+  else if (unformat (input, "echo-source"))
+    {
+      int is_set;
+      u32 sw_if_index;
+      int have_usable_ip4;
+      ip4_address_t ip4;
+      int have_usable_ip6;
+      ip6_address_t ip6;
+      bfd_udp_get_echo_source (&is_set, &sw_if_index, &have_usable_ip4, &ip4,
+			       &have_usable_ip6, &ip6);
+      if (is_set)
+	{
+	  vnet_sw_interface_t *sw_if =
+	    vnet_get_sw_interface_safe (&vnet_main, sw_if_index);
+	  vnet_hw_interface_t *hw_if =
+	    vnet_get_hw_interface (&vnet_main, sw_if->hw_if_index);
+	  u8 *s = format (NULL, "UDP echo source is: %v\n", hw_if->name);
+	  s = format (s, "IPv4 address usable as echo source: ");
+	  if (have_usable_ip4)
+	    {
+	      s = format (s, "%U\n", format_ip4_address, &ip4);
+	    }
+	  else
+	    {
+	      s = format (s, "none\n");
+	    }
+	  s = format (s, "IPv6 address usable as echo source: ");
+	  if (have_usable_ip6)
+	    {
+	      s = format (s, "%U\n", format_ip6_address, &ip6);
+	    }
+	  else
+	    {
+	      s = format (s, "none\n");
+	    }
+	  vlib_cli_output (vm, "%v", s);
+	  vec_free (s);
+	}
+      else
+	{
+	  vlib_cli_output (vm, "UDP echo source is not set.\n");
+	}
+    }
+  else
+    {
+      vlib_cli_output (vm, "Number of configured BFD sessions: %lu\n",
+		       (u64) pool_elts (bm->sessions));
+      vlib_cli_output (vm, "Number of configured BFD keys: %lu\n",
+		       (u64) pool_elts (bm->auth_keys));
+    }
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_bfd_command, static) = {
+  .path = "show bfd",
+  .short_help = "show bfd [keys|sessions|echo-source]",
+  .function = show_bfd,
+};
+/* *INDENT-ON* */
+
+static u8 *
+format_vnet_api_errno (u8 * s, va_list * args)
+{
+  vnet_api_error_t api_error = va_arg (*args, vnet_api_error_t);
+#define _(a, b, c)           \
+  case b:                    \
+    s = format (s, "%s", c); \
+    break;
+  switch (api_error)
+    {
+      foreach_vnet_api_error default:s = format (s, "UNKNOWN");
+      break;
+    }
+  return s;
+}
+
+static clib_error_t *
+bfd_cli_key_add (vlib_main_t * vm, unformat_input_t * input,
+		 CLIB_UNUSED (vlib_cli_command_t * lmd))
+{
+  clib_error_t *ret = NULL;
+  int have_key_id = 0;
+  u32 key_id = 0;
+  u8 *vec_auth_type = NULL;
+  bfd_auth_type_e auth_type = BFD_AUTH_TYPE_reserved;
+  u8 *secret = NULL;
+  static const u8 keyed_sha1[] = "keyed-sha1";
+  static const u8 meticulous_keyed_sha1[] = "meticulous-keyed-sha1";
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (input, "conf-key-id %u", &key_id))
+	{
+	  have_key_id = 1;
+	}
+      else if (unformat (input, "type %U", unformat_token, "a-zA-Z0-9-",
+			 &vec_auth_type))
+	{
+	  if (vec_len (vec_auth_type) == sizeof (keyed_sha1) - 1 &&
+	      0 == memcmp (vec_auth_type, keyed_sha1,
+			   sizeof (keyed_sha1) - 1))
+	    {
+	      auth_type = BFD_AUTH_TYPE_keyed_sha1;
+	    }
+	  else if (vec_len (vec_auth_type) ==
+		   sizeof (meticulous_keyed_sha1) - 1 &&
+		   0 == memcmp (vec_auth_type, meticulous_keyed_sha1,
+				sizeof (meticulous_keyed_sha1) - 1))
+	    {
+	      auth_type = BFD_AUTH_TYPE_meticulous_keyed_sha1;
+	    }
+	  else
+	    {
+	      ret = clib_error_return (0, "invalid type `%v'", vec_auth_type);
+	      goto out;
+	    }
+	}
+      else if (unformat (input, "secret %U", unformat_hex_string, &secret))
+	{
+	  /* nothing to do here */
+	}
+      else
+	{
+	  ret = clib_error_return (0, "Unknown input `%U'",
+				   format_unformat_error, input);
+	  goto out;
+	}
+    }
+
+  if (!have_key_id)
+    {
+      ret =
+	clib_error_return (0, "required parameter missing: `conf-key-id'");
+      goto out;
+    }
+  if (!vec_auth_type)
+    {
+      ret = clib_error_return (0, "required parameter missing: `type'");
+      goto out;
+    }
+  if (!secret)
+    {
+      ret = clib_error_return (0, "required parameter missing: `secret'");
+      goto out;
+    }
+
+  vnet_api_error_t rv =
+    bfd_auth_set_key (key_id, auth_type, vec_len (secret), secret);
+  if (rv)
+    {
+      ret =
+	clib_error_return (0, "`bfd_auth_set_key' API call failed, rv=%d:%U",
+			   (int) rv, format_vnet_api_errno, rv);
+    }
+
+out:
+  vec_free (vec_auth_type);
+  return ret;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (bfd_cli_key_add_command, static) = {
+  .path = "bfd key set",
+  .short_help = "bfd key set"
+                " conf-key-id <id>"
+                " type <keyed-sha1|meticulous-keyed-sha1> "
+                " secret <secret>",
+  .function = bfd_cli_key_add,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+bfd_cli_key_del (vlib_main_t * vm, unformat_input_t * input,
+		 CLIB_UNUSED (vlib_cli_command_t * lmd))
+{
+  clib_error_t *ret = NULL;
+  u32 key_id = 0;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (!unformat (input, "conf-key-id %u", &key_id))
+	{
+	  ret = clib_error_return (0, "Unknown input `%U'",
+				   format_unformat_error, input);
+	  goto out;
+	}
+    }
+
+  vnet_api_error_t rv = bfd_auth_del_key (key_id);
+  if (rv)
+    {
+      ret =
+	clib_error_return (0, "`bfd_auth_del_key' API call failed, rv=%d:%U",
+			   (int) rv, format_vnet_api_errno, rv);
+    }
+
+out:
+  return ret;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (bfd_cli_key_del_command, static) = {
+  .path = "bfd key del",
+  .short_help = "bfd key del conf-key-id <id>",
+  .function = bfd_cli_key_del,
+};
+/* *INDENT-ON* */
+
+#define INTERFACE_STR "interface"
+#define LOCAL_ADDR_STR "local-addr"
+#define PEER_ADDR_STR "peer-addr"
+#define CONF_KEY_ID_STR "conf-key-id"
+#define BFD_KEY_ID_STR "bfd-key-id"
+#define DESIRED_MIN_TX_STR "desired-min-tx"
+#define REQUIRED_MIN_RX_STR "required-min-rx"
+#define DETECT_MULT_STR "detect-mult"
+#define ADMIN_STR "admin"
+#define DELAYED_STR "delayed"
+
+static const unsigned mandatory = 1;
+static const unsigned optional = 0;
+
+#define DECLARE(t, n, s, r, ...) \
+  int have_##n = 0;              \
+  t n;
+
+#define UNFORMAT(t, n, s, r, ...)              \
+  if (unformat (input, s " " __VA_ARGS__, &n)) \
+    {                                          \
+      something_parsed = 1;                    \
+      have_##n = 1;                            \
+    }
+
+#define CHECK_MANDATORY(t, n, s, r, ...)                                  \
+  if (mandatory == r && !have_##n)                                        \
+    {                                                                     \
+      ret = clib_error_return (0, "Required parameter `%s' missing.", n); \
+      goto out;                                                           \
+    }
+
+static clib_error_t *
+bfd_cli_udp_session_add (vlib_main_t * vm, unformat_input_t * input,
+			 CLIB_UNUSED (vlib_cli_command_t * lmd))
+{
+  clib_error_t *ret = NULL;
+#define foreach_bfd_cli_udp_session_add_cli_param(F)              \
+  F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
+     unformat_vnet_sw_interface, &vnet_main)                      \
+  F (ip46_address_t, local_addr, LOCAL_ADDR_STR, mandatory, "%U", \
+     unformat_ip46_address)                                       \
+  F (ip46_address_t, peer_addr, PEER_ADDR_STR, mandatory, "%U",   \
+     unformat_ip46_address)                                       \
+  F (u32, desired_min_tx, DESIRED_MIN_TX_STR, mandatory, "%u")    \
+  F (u32, required_min_rx, REQUIRED_MIN_RX_STR, mandatory, "%u")  \
+  F (u32, detect_mult, DETECT_MULT_STR, mandatory, "%u")          \
+  F (u32, conf_key_id, CONF_KEY_ID_STR, optional, "%u")           \
+  F (u32, bfd_key_id, BFD_KEY_ID_STR, optional, "%u")
+
+  foreach_bfd_cli_udp_session_add_cli_param (DECLARE);
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      int something_parsed = 0;
+      foreach_bfd_cli_udp_session_add_cli_param (UNFORMAT);
+
+      if (!something_parsed)
+	{
+	  ret = clib_error_return (0, "Unknown input `%U'",
+				   format_unformat_error, input);
+	  goto out;
+	}
+    }
+
+  foreach_bfd_cli_udp_session_add_cli_param (CHECK_MANDATORY);
+
+  if (1 == have_conf_key_id + have_bfd_key_id)
+    {
+      ret = clib_error_return (0, "Incompatible parameter combination, `%s' "
+			       "and `%s' must be either both specified or none",
+			       CONF_KEY_ID_STR, BFD_KEY_ID_STR);
+      goto out;
+    }
+
+  if (detect_mult > 255)
+    {
+      ret = clib_error_return (0, "%s value `%u' out of range <1,255>",
+			       DETECT_MULT_STR, detect_mult);
+      goto out;
+    }
+
+  if (have_bfd_key_id && bfd_key_id > 255)
+    {
+      ret = clib_error_return (0, "%s value `%u' out of range <1,255>",
+			       BFD_KEY_ID_STR, bfd_key_id);
+      goto out;
+    }
+
+  vnet_api_error_t rv =
+    bfd_udp_add_session (sw_if_index, &local_addr, &peer_addr, desired_min_tx,
+			 required_min_rx,
+			 detect_mult, have_conf_key_id, conf_key_id,
+			 bfd_key_id);
+  if (rv)
+    {
+      ret =
+	clib_error_return (0,
+			   "`bfd_add_add_session' API call failed, rv=%d:%U",
+			   (int) rv, format_vnet_api_errno, rv);
+      goto out;
+    }
+
+out:
+  return ret;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (bfd_cli_udp_session_add_command, static) = {
+  .path = "bfd udp session add",
+  .short_help = "bfd udp session add"
+                " interface <interface>"
+                " local-addr <local-address>"
+                " peer-addr <peer-address>"
+                " desired-min-tx <desired min tx interval>"
+                " required-min-rx <required min rx interval>"
+                " detect-mult <detect multiplier> "
+                "["
+                " conf-key-id <config key ID>"
+                " bfd-key-id <BFD key ID>"
+                "]",
+  .function = bfd_cli_udp_session_add,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+bfd_cli_udp_session_mod (vlib_main_t * vm, unformat_input_t * input,
+			 CLIB_UNUSED (vlib_cli_command_t * lmd))
+{
+  clib_error_t *ret = NULL;
+#define foreach_bfd_cli_udp_session_mod_cli_param(F)              \
+  F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
+     unformat_vnet_sw_interface, &vnet_main)                      \
+  F (ip46_address_t, local_addr, LOCAL_ADDR_STR, mandatory, "%U", \
+     unformat_ip46_address)                                       \
+  F (ip46_address_t, peer_addr, PEER_ADDR_STR, mandatory, "%U",   \
+     unformat_ip46_address)                                       \
+  F (u32, desired_min_tx, DESIRED_MIN_TX_STR, mandatory, "%u")    \
+  F (u32, required_min_rx, REQUIRED_MIN_RX_STR, mandatory, "%u")  \
+  F (u32, detect_mult, DETECT_MULT_STR, mandatory, "%u")
+
+  foreach_bfd_cli_udp_session_mod_cli_param (DECLARE);
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      int something_parsed = 0;
+      foreach_bfd_cli_udp_session_mod_cli_param (UNFORMAT);
+
+      if (!something_parsed)
+	{
+	  ret = clib_error_return (0, "Unknown input `%U'",
+				   format_unformat_error, input);
+	  goto out;
+	}
+    }
+
+  foreach_bfd_cli_udp_session_mod_cli_param (CHECK_MANDATORY);
+
+  if (detect_mult > 255)
+    {
+      ret = clib_error_return (0, "%s value `%u' out of range <1,255>",
+			       DETECT_MULT_STR, detect_mult);
+      goto out;
+    }
+
+  vnet_api_error_t rv =
+    bfd_udp_mod_session (sw_if_index, &local_addr, &peer_addr,
+			 desired_min_tx, required_min_rx, detect_mult);
+  if (rv)
+    {
+      ret =
+	clib_error_return (0,
+			   "`bfd_udp_mod_session' API call failed, rv=%d:%U",
+			   (int) rv, format_vnet_api_errno, rv);
+      goto out;
+    }
+
+out:
+  return ret;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (bfd_cli_udp_session_mod_command, static) = {
+  .path = "bfd udp session mod",
+  .short_help = "bfd udp session mod interface"
+                " <interface> local-addr"
+                " <local-address> peer-addr"
+                " <peer-address> desired-min-tx"
+                " <desired min tx interval> required-min-rx"
+                " <required min rx interval> detect-mult"
+                " <detect multiplier> ",
+  .function = bfd_cli_udp_session_mod,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+bfd_cli_udp_session_del (vlib_main_t * vm, unformat_input_t * input,
+			 CLIB_UNUSED (vlib_cli_command_t * lmd))
+{
+  clib_error_t *ret = NULL;
+#define foreach_bfd_cli_udp_session_del_cli_param(F)              \
+  F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
+     unformat_vnet_sw_interface, &vnet_main)                      \
+  F (ip46_address_t, local_addr, LOCAL_ADDR_STR, mandatory, "%U", \
+     unformat_ip46_address)                                       \
+  F (ip46_address_t, peer_addr, PEER_ADDR_STR, mandatory, "%U",   \
+     unformat_ip46_address)
+
+  foreach_bfd_cli_udp_session_del_cli_param (DECLARE);
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      int something_parsed = 0;
+      foreach_bfd_cli_udp_session_del_cli_param (UNFORMAT);
+
+      if (!something_parsed)
+	{
+	  ret = clib_error_return (0, "Unknown input `%U'",
+				   format_unformat_error, input);
+	  goto out;
+	}
+    }
+
+  foreach_bfd_cli_udp_session_del_cli_param (CHECK_MANDATORY);
+
+  vnet_api_error_t rv =
+    bfd_udp_del_session (sw_if_index, &local_addr, &peer_addr);
+  if (rv)
+    {
+      ret =
+	clib_error_return (0,
+			   "`bfd_udp_del_session' API call failed, rv=%d:%U",
+			   (int) rv, format_vnet_api_errno, rv);
+      goto out;
+    }
+
+out:
+  return ret;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (bfd_cli_udp_session_del_command, static) = {
+  .path = "bfd udp session del",
+  .short_help = "bfd udp session del interface"
+                " <interface> local-addr"
+                " <local-address> peer-addr"
+                "<peer-address> ",
+  .function = bfd_cli_udp_session_del,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+bfd_cli_udp_session_set_flags (vlib_main_t * vm, unformat_input_t * input,
+			       CLIB_UNUSED (vlib_cli_command_t * lmd))
+{
+  clib_error_t *ret = NULL;
+#define foreach_bfd_cli_udp_session_set_flags_cli_param(F)        \
+  F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
+     unformat_vnet_sw_interface, &vnet_main)                      \
+  F (ip46_address_t, local_addr, LOCAL_ADDR_STR, mandatory, "%U", \
+     unformat_ip46_address)                                       \
+  F (ip46_address_t, peer_addr, PEER_ADDR_STR, mandatory, "%U",   \
+     unformat_ip46_address)                                       \
+  F (u8 *, admin_up_down_token, ADMIN_STR, mandatory, "%v",       \
+     &admin_up_down_token)
+
+  foreach_bfd_cli_udp_session_set_flags_cli_param (DECLARE);
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      int something_parsed = 0;
+      foreach_bfd_cli_udp_session_set_flags_cli_param (UNFORMAT);
+
+      if (!something_parsed)
+	{
+	  ret = clib_error_return (0, "Unknown input `%U'",
+				   format_unformat_error, input);
+	  goto out;
+	}
+    }
+
+  foreach_bfd_cli_udp_session_set_flags_cli_param (CHECK_MANDATORY);
+
+  u8 admin_up_down;
+  static const char up[] = "up";
+  static const char down[] = "down";
+  if (!memcmp (admin_up_down_token, up, sizeof (up) - 1))
+    {
+      admin_up_down = 1;
+    }
+  else if (!memcmp (admin_up_down_token, down, sizeof (down) - 1))
+    {
+      admin_up_down = 0;
+    }
+  else
+    {
+      ret =
+	clib_error_return (0, "Unrecognized value for `%s' parameter: `%v'",
+			   ADMIN_STR, admin_up_down_token);
+      goto out;
+    }
+  vnet_api_error_t rv = bfd_udp_session_set_flags (sw_if_index, &local_addr,
+						   &peer_addr, admin_up_down);
+  if (rv)
+    {
+      ret =
+	clib_error_return (0,
+			   "`bfd_udp_session_set_flags' API call failed, rv=%d:%U",
+			   (int) rv, format_vnet_api_errno, rv);
+      goto out;
+    }
+
+out:
+  return ret;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (bfd_cli_udp_session_set_flags_command, static) = {
+  .path = "bfd udp session set-flags",
+  .short_help = "bfd udp session set-flags"
+                " interface <interface>"
+                " local-addr <local-address>"
+                " peer-addr <peer-address>"
+                " admin <up|down>",
+  .function = bfd_cli_udp_session_set_flags,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+bfd_cli_udp_session_auth_activate (vlib_main_t * vm, unformat_input_t * input,
+				   CLIB_UNUSED (vlib_cli_command_t * lmd))
+{
+  clib_error_t *ret = NULL;
+#define foreach_bfd_cli_udp_session_auth_activate_cli_param(F)    \
+  F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
+     unformat_vnet_sw_interface, &vnet_main)                      \
+  F (ip46_address_t, local_addr, LOCAL_ADDR_STR, mandatory, "%U", \
+     unformat_ip46_address)                                       \
+  F (ip46_address_t, peer_addr, PEER_ADDR_STR, mandatory, "%U",   \
+     unformat_ip46_address)                                       \
+  F (u8 *, delayed_token, DELAYED_STR, optional, "%v")            \
+  F (u32, conf_key_id, CONF_KEY_ID_STR, mandatory, "%u")          \
+  F (u32, bfd_key_id, BFD_KEY_ID_STR, mandatory, "%u")
+
+  foreach_bfd_cli_udp_session_auth_activate_cli_param (DECLARE);
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      int something_parsed = 0;
+      foreach_bfd_cli_udp_session_auth_activate_cli_param (UNFORMAT);
+
+      if (!something_parsed)
+	{
+	  ret = clib_error_return (0, "Unknown input `%U'",
+				   format_unformat_error, input);
+	  goto out;
+	}
+    }
+
+  foreach_bfd_cli_udp_session_auth_activate_cli_param (CHECK_MANDATORY);
+
+  u8 is_delayed = 0;
+  if (have_delayed_token)
+    {
+      static const char yes[] = "yes";
+      static const char no[] = "no";
+      if (!memcmp (delayed_token, yes, sizeof (yes) - 1))
+	{
+	  is_delayed = 1;
+	}
+      else if (!memcmp (delayed_token, no, sizeof (no) - 1))
+	{
+	  is_delayed = 0;
+	}
+      else
+	{
+	  ret =
+	    clib_error_return (0,
+			       "Unrecognized value for `%s' parameter: `%v'",
+			       DELAYED_STR, delayed_token);
+	  goto out;
+	}
+    }
+
+  if (have_bfd_key_id && bfd_key_id > 255)
+    {
+      ret = clib_error_return (0, "%s value `%u' out of range <1,255>",
+			       BFD_KEY_ID_STR, bfd_key_id);
+      goto out;
+    }
+
+  vnet_api_error_t rv =
+    bfd_udp_auth_activate (sw_if_index, &local_addr, &peer_addr, conf_key_id,
+			   bfd_key_id, is_delayed);
+  if (rv)
+    {
+      ret =
+	clib_error_return (0,
+			   "`bfd_udp_auth_activate' API call failed, rv=%d:%U",
+			   (int) rv, format_vnet_api_errno, rv);
+      goto out;
+    }
+
+out:
+  return ret;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (bfd_cli_udp_session_auth_activate_command, static) = {
+  .path = "bfd udp session auth activate",
+  .short_help = "bfd udp session auth activate"
+                " interface <interface>"
+                " local-addr <local-address>"
+                " peer-addr <peer-address>"
+                " conf-key-id <config key ID>"
+                " bfd-key-id <BFD key ID>"
+                " [ delayed <yes|no>]",
+  .function = bfd_cli_udp_session_auth_activate,
+};
+
+static clib_error_t *
+bfd_cli_udp_session_auth_deactivate (vlib_main_t *vm, unformat_input_t *input,
+                                     CLIB_UNUSED (vlib_cli_command_t *lmd))
+{
+  clib_error_t *ret = NULL;
+#define foreach_bfd_cli_udp_session_auth_deactivate_cli_param(F)  \
+  F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",            \
+     unformat_vnet_sw_interface, &vnet_main)                      \
+  F (ip46_address_t, local_addr, LOCAL_ADDR_STR, mandatory, "%U", \
+     unformat_ip46_address)                                       \
+  F (ip46_address_t, peer_addr, PEER_ADDR_STR, mandatory, "%U",   \
+     unformat_ip46_address)                                       \
+  F (u8 *, delayed_token, DELAYED_STR, optional, "%v")
+
+  foreach_bfd_cli_udp_session_auth_deactivate_cli_param (DECLARE);
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      int something_parsed = 0;
+      foreach_bfd_cli_udp_session_auth_deactivate_cli_param (UNFORMAT);
+
+      if (!something_parsed)
+        {
+          ret = clib_error_return (0, "Unknown input `%U'",
+                                   format_unformat_error, input);
+          goto out;
+        }
+    }
+
+  foreach_bfd_cli_udp_session_auth_deactivate_cli_param (CHECK_MANDATORY);
+
+  u8 is_delayed = 0;
+  if (have_delayed_token)
+    {
+      static const char yes[] = "yes";
+      static const char no[] = "no";
+      if (!memcmp (delayed_token, yes, sizeof (yes) - 1))
+        {
+          is_delayed = 1;
+        }
+      else if (!memcmp (delayed_token, no, sizeof (no) - 1))
+        {
+          is_delayed = 0;
+        }
+      else
+        {
+          ret = clib_error_return (
+              0, "Unrecognized value for `%s' parameter: `%v'", DELAYED_STR,
+              delayed_token);
+          goto out;
+        }
+    }
+
+  vnet_api_error_t rv = bfd_udp_auth_deactivate (sw_if_index, &local_addr,
+                                                 &peer_addr, is_delayed);
+  if (rv)
+    {
+      ret = clib_error_return (
+          0, "`bfd_udp_auth_deactivate' API call failed, rv=%d:%U", (int)rv,
+          format_vnet_api_errno, rv);
+      goto out;
+    }
+
+out:
+  return ret;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (bfd_cli_udp_session_auth_deactivate_command, static) = {
+  .path = "bfd udp session auth deactivate",
+  .short_help = "bfd udp session auth deactivate"
+                " interface <interface>"
+                " local-addr <local-address>"
+                " peer-addr <peer-address>"
+                "[ delayed <yes|no>]",
+  .function = bfd_cli_udp_session_auth_deactivate,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+bfd_cli_udp_set_echo_source (vlib_main_t * vm, unformat_input_t * input,
+			     CLIB_UNUSED (vlib_cli_command_t * lmd))
+{
+  clib_error_t *ret = NULL;
+#define foreach_bfd_cli_udp_set_echo_source_cli_param(F) \
+  F (u32, sw_if_index, INTERFACE_STR, mandatory, "%U",   \
+     unformat_vnet_sw_interface, &vnet_main)
+
+  foreach_bfd_cli_udp_set_echo_source_cli_param (DECLARE);
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      int something_parsed = 0;
+      foreach_bfd_cli_udp_set_echo_source_cli_param (UNFORMAT);
+
+      if (!something_parsed)
+	{
+	  ret = clib_error_return (0, "Unknown input `%U'",
+				   format_unformat_error, input);
+	  goto out;
+	}
+    }
+
+  foreach_bfd_cli_udp_set_echo_source_cli_param (CHECK_MANDATORY);
+
+  vnet_api_error_t rv = bfd_udp_set_echo_source (sw_if_index);
+  if (rv)
+    {
+      ret =
+	clib_error_return (0,
+			   "`bfd_udp_set_echo_source' API call failed, rv=%d:%U",
+			   (int) rv, format_vnet_api_errno, rv);
+      goto out;
+    }
+
+out:
+  return ret;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (bfd_cli_udp_set_echo_source_cmd, static) = {
+  .path = "bfd udp echo-source set",
+  .short_help = "bfd udp echo-source set interface <interface>",
+  .function = bfd_cli_udp_set_echo_source,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+bfd_cli_udp_del_echo_source (vlib_main_t * vm, unformat_input_t * input,
+			     CLIB_UNUSED (vlib_cli_command_t * lmd))
+{
+  vnet_api_error_t rv = bfd_udp_del_echo_source ();
+  if (rv)
+    {
+      return clib_error_return (0,
+				"`bfd_udp_del_echo_source' API call failed, rv=%d:%U",
+				(int) rv, format_vnet_api_errno, rv);
+    }
+
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (bfd_cli_udp_del_echo_source_cmd, static) = {
+  .path = "bfd udp echo-source del",
+  .short_help = "bfd udp echo-source del",
+  .function = bfd_cli_udp_del_echo_source,
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */