text: /*
   * mactime.c - time-based src mac address filtration
   *
   * Copyright (c) 2018 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 <vnet/vnet.h>
  #include <vnet/plugin/plugin.h>
  #include <mactime/mactime.h>
  
  #include <vlibapi/api.h>
  #include <vlibmemory/api.h>
  #include <vpp/app/version.h>
  
  /* define message IDs */
  #include <vnet/format_fns.h>
  #include <mactime/mactime.api_enum.h>
  #include <mactime/mactime.api_types.h>
  
  #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
  
  #define REPLY_MSG_ID_BASE mm->msg_id_base
  #include <vlibapi/api_helper_macros.h>
  
  #include <vnet/ip-neighbor/ip_neighbor.h>
  
  mactime_main_t mactime_main;
  
  /** \file mactime.c
   * time-base src-mac filter device-input feature arc implementation
   */
  
  static void
  feature_init (mactime_main_t * mm)
  {
    if (mm->feature_initialized == 0)
      {
        /* Create the lookup table */
        clib_bihash_init_8_8 (&mm->lookup_table, "mactime lookup table",
  			    mm->lookup_table_num_buckets,
  			    mm->lookup_table_memory_size);
        clib_timebase_init (&mm->timebase, mm->timezone_offset,
  			  CLIB_TIMEBASE_DAYLIGHT_USA,
  			  &(mm->vlib_main->clib_time));
        mm->allow_counters.name = "allow";
        mm->allow_counters.stat_segment_name = "/mactime/allow";
        mm->drop_counters.name = "drop";
        mm->drop_counters.stat_segment_name = "/mactime/drop";
        mm->feature_initialized = 1;
      }
  }
  
  /** Action function shared between message handler and debug CLI
  */
  int
  mactime_enable_disable (mactime_main_t * mm, u32 sw_if_index,
  			int enable_disable)
  {
    vnet_sw_interface_t *sw;
    int rv = 0;
    static u8 url_init_done;
  
    feature_init (mm);
  
    /* Utterly wrong? */
    if (pool_is_free_index (mm->vnet_main->interface_main.sw_interfaces,
  			  sw_if_index))
      return VNET_API_ERROR_INVALID_SW_IF_INDEX;
  
    /* Not a physical port? */
    sw = vnet_get_sw_interface (mm->vnet_main, sw_if_index);
    if (sw->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
      return VNET_API_ERROR_INVALID_SW_IF_INDEX;
  
    vnet_feature_enable_disable ("device-input", "mactime",
  			       sw_if_index, enable_disable, 0, 0);
    vnet_feature_enable_disable ("interface-output", "mactime-tx",
  			       sw_if_index, enable_disable, 0, 0);
    if (url_init_done == 0)
      {
        mactime_url_init (mm->vlib_main);
        url_init_done = 1;
      }
  
    return rv;
  }
  
  static clib_error_t *
  mactime_enable_disable_command_fn (vlib_main_t * vm,
  				   unformat_input_t * input,
  				   vlib_cli_command_t * cmd)
  {
    mactime_main_t *mm = &mactime_main;
    u32 sw_if_index = ~0;
    int enable_disable = 1;
  
    int rv;
  
    while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
      {
        if (unformat (input, "disable"))
  	enable_disable = 0;
        else if (unformat (input, "%U", unformat_vnet_sw_interface,
  			 mm->vnet_main, &sw_if_index))
  	;
        else if (unformat (input, "sw_if_index %d", &sw_if_index))
  	;
        else
  	break;
      }
  
    if (sw_if_index == ~0)
      return clib_error_return (0, "Please specify an interface...");
  
    rv = mactime_enable_disable (mm, sw_if_index, enable_disable);
  
    switch (rv)
      {
      case 0:
        break;
  
      case VNET_API_ERROR_INVALID_SW_IF_INDEX:
        return clib_error_return
  	(0, "Invalid interface, only works on physical ports");
        break;
  
      default:
        return clib_error_return (0, "mactime_enable_disable returned %d", rv);
      }
    return 0;
  }
  
  /* *INDENT-OFF* */
  VLIB_CLI_COMMAND (mactime_enable_disable_command, static) =
  {
    .path = "mactime enable-disable",
    .short_help =
    "mactime enable-disable <interface-name> [disable]",
    .function = mactime_enable_disable_command_fn,
  };
  /* *INDENT-ON* */
  
  
  /** Enable / disable time-base src mac filtration on an interface
   */
  
  static void vl_api_mactime_enable_disable_t_handler
    (vl_api_mactime_enable_disable_t * mp)
  {
    vl_api_mactime_enable_disable_reply_t *rmp;
    mactime_main_t *mm = &mactime_main;
    int rv;
  
    VALIDATE_SW_IF_INDEX (mp);
  
    rv = mactime_enable_disable (mm, ntohl (mp->sw_if_index),
  			       (int) (mp->enable_disable));
    BAD_SW_IF_INDEX_LABEL;
    REPLY_MACRO (VL_API_MACTIME_ENABLE_DISABLE_REPLY);
  }
  
  static void
  vl_api_mactime_dump_t_handler (vl_api_mactime_dump_t * mp)
  {
    vl_api_mactime_details_t *ep;
    vl_api_mactime_dump_reply_t *rmp;
    mactime_device_t *dev;
    mactime_main_t *mm = &mactime_main;
    vl_api_registration_t *rp;
    int rv = 0, i;
    u32 his_table_epoch = clib_net_to_host_u32 (mp->my_table_epoch);
    u32 message_size;
    u32 name_len;
    u32 nranges;
  
    rp = vl_api_client_index_to_registration (mp->client_index);
    if (rp == 0)
      return;
  
    if (his_table_epoch == mm->device_table_epoch)
      {
        rv = VNET_API_ERROR_NO_CHANGE;
        goto send_reply;
      }
  
    /* *INDENT-OFF* */
    pool_foreach (dev, mm->devices,
    ({
      message_size = sizeof(*ep) + vec_len(dev->device_name) +
        vec_len(dev->ranges) * sizeof(ep->ranges[0]);
  
      ep = vl_msg_api_alloc (message_size);
      memset (ep, 0, message_size);
      ep->_vl_msg_id = clib_host_to_net_u16 (VL_API_MACTIME_DETAILS
                                             + mm->msg_id_base);
      ep->context = mp->context;
      /* Index is the key for the stats segment combined counters */
      ep->pool_index = clib_host_to_net_u32 (dev - mm->devices);
  
      clib_memcpy_fast (ep->mac_address, dev->mac_address,
                        sizeof (ep->mac_address));
      ep->data_quota = clib_host_to_net_u64 (dev->data_quota);
      ep->data_used_in_range = clib_host_to_net_u64 (dev->data_used_in_range);
      ep->flags = clib_host_to_net_u32 (dev->flags);
      nranges = vec_len (dev->ranges);
      ep->nranges = clib_host_to_net_u32 (nranges);
  
      for (i = 0; i < vec_len (dev->ranges); i++)
        {
          ep->ranges[i].start = dev->ranges[i].start;
          ep->ranges[i].end = dev->ranges[i].end;
        }
  
      name_len = vec_len (dev->device_name);
      name_len = (name_len < ARRAY_LEN(ep->device_name)) ?
        name_len : ARRAY_LEN(ep->device_name) - 1;
  
      clib_memcpy_fast (ep->device_name, dev->device_name,
                        name_len);
      ep->device_name [ARRAY_LEN(ep->device_name) -1] = 0;
      vl_api_send_msg (rp, (u8 *)ep);
    }));
    /* *INDENT-OFF* */
  
   send_reply:
    /* *INDENT-OFF* */
    REPLY_MACRO2 (VL_API_MACTIME_DUMP_REPLY,
    ({
      rmp->table_epoch = clib_host_to_net_u32 (mm->device_table_epoch);
    }));
    /* *INDENT-ON* */
  }
  
  /** Create a lookup table entry for the indicated mac address
   */
  void
  mactime_send_create_entry_message (u8 * mac_address)
  {
    mactime_main_t *mm = &mactime_main;
    api_main_t *am;
    vl_shmem_hdr_t *shmem_hdr;
    u8 *name;
    vl_api_mactime_add_del_range_t *mp;
  
    am = vlibapi_get_main ();
    shmem_hdr = am->shmem_hdr;
    mp = vl_msg_api_alloc_as_if_client (sizeof (*mp));
    clib_memset (mp, 0, sizeof (*mp));
    mp->_vl_msg_id = ntohs (VL_API_MACTIME_ADD_DEL_RANGE + mm->msg_id_base);
    name = format (0, "mac-%U", format_mac_address, mac_address);
  
    memcpy (mp->device_name, name, vec_len (name));
    memcpy (mp->mac_address, mac_address, sizeof (mp->mac_address));
    /* $$$ config: create allow / drop / range */
    mp->allow = 1;
    mp->is_add = 1;
    vl_msg_api_send_shmem (shmem_hdr->vl_input_queue, (u8 *) & mp);
  }
  
  /** Add or delete static / dynamic accept/drop configuration for a src mac
   */
  
  static void vl_api_mactime_add_del_range_t_handler
    (vl_api_mactime_add_del_range_t * mp)
  {
    mactime_main_t *mm = &mactime_main;
    vl_api_mactime_add_del_range_reply_t *rmp;
    mactime_device_t *dp;
    clib_bihash_kv_8_8_t kv;
    int found = 1;
    clib_bihash_8_8_t *lut = &mm->lookup_table;
    u64 data_quota;
    int i, rv = 0;
  
    feature_init (mm);
  
    /*
     * Change the table epoch. Skip 0 so clients can code my_table_epoch = 0
     * to receive a full dump.
     */
    mm->device_table_epoch++;
    if (PREDICT_FALSE (mm->device_table_epoch == 0))
      mm->device_table_epoch++;
  
    data_quota = clib_net_to_host_u64 (mp->data_quota);
  
    clib_memset (&kv, 0, sizeof (kv));
    memcpy (&kv.key, mp->mac_address, sizeof (mp->mac_address));
  
    /* See if we have a lookup table entry for this src mac address */
    if (clib_bihash_search_8_8 (lut, &kv, &kv) < 0)
      found = 0;
  
    /* Add an entry? */
    if (mp->is_add)
      {
        /* Create the device entry? */
        if (found == 0)
  	{
  	  pool_get (mm->devices, dp);
  	  clib_memset (dp, 0, sizeof (*dp));
  	  vlib_validate_combined_counter (&mm->allow_counters,
  					  dp - mm->devices);
  	  vlib_zero_combined_counter (&mm->allow_counters, dp - mm->devices);
  	  vlib_validate_combined_counter (&mm->drop_counters,
  					  dp - mm->devices);
  	  vlib_zero_combined_counter (&mm->drop_counters, dp - mm->devices);
  	  mp->device_name[ARRAY_LEN (mp->device_name) - 1] = 0;
  	  dp->device_name = format (0, "%s%c", mp->device_name, 0);
  	  memcpy (dp->mac_address, mp->mac_address, sizeof (mp->mac_address));
  	  for (i = 0; i < clib_net_to_host_u32 (mp->count); i++)
  	    {
  	      clib_timebase_range_t _r, *r = &_r;
  	      r->start = mp->ranges[i].start;
  	      r->end = mp->ranges[i].end;
  	      vec_add1 (dp->ranges, r[0]);
  	    }
  	  /* If we found some time ranges */
  	  if (i)
  	    {
  	      /* Set allow/drop based on msg flags */
  	      if (mp->drop)
  		dp->flags = MACTIME_DEVICE_FLAG_DYNAMIC_DROP;
  	      if (mp->allow)
  		dp->flags = MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW;
  	      if (mp->allow_quota)
  		dp->flags = MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW_QUOTA;
  	    }
  	  else
  	    {
  	      /* no ranges, it's a static allow/drop */
  	      if (mp->drop)
  		dp->flags = MACTIME_DEVICE_FLAG_STATIC_DROP;
  	      if (mp->allow)
  		dp->flags = MACTIME_DEVICE_FLAG_STATIC_ALLOW;
  	    }
  	  if (mp->no_udp_10001)
  	    dp->flags |= MACTIME_DEVICE_FLAG_DROP_UDP_10001;
  
  	  dp->data_quota = data_quota;
  
  	  /* Add the hash table entry */
  	  kv.value = dp - mm->devices;
  	  clib_bihash_add_del_8_8 (lut, &kv, 1 /* is_add */ );
  	}
        else			/* add more ranges, flags, etc. */
  	{
  	  dp = pool_elt_at_index (mm->devices, kv.value);
  
  	  for (i = 0; i < clib_net_to_host_u32 (mp->count); i++)
  	    {
  	      clib_timebase_range_t _r, *r = &_r;
  	      r->start = mp->ranges[i].start;
  	      r->end = mp->ranges[i].end;
  	      vec_add1 (dp->ranges, r[0]);
  	    }
  
  	  if (vec_len (dp->ranges))
  	    {
  	      /* Set allow/drop based on msg flags */
  	      if (mp->drop)
  		dp->flags = MACTIME_DEVICE_FLAG_DYNAMIC_DROP;
  	      if (mp->allow)
  		dp->flags = MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW;
  	      if (mp->allow_quota)
  		dp->flags = MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW_QUOTA;
  	    }
  	  else
  	    {
  	      /* no ranges, it's a static allow/drop */
  	      if (mp->drop)
  		dp->flags = MACTIME_DEVICE_FLAG_STATIC_DROP;
  	      if (mp->allow)
  		dp->flags = MACTIME_DEVICE_FLAG_STATIC_ALLOW;
  	    }
  	  if (mp->no_udp_10001)
  	    dp->flags |= MACTIME_DEVICE_FLAG_DROP_UDP_10001;
  
  	  dp->data_quota = data_quota;
  	}
      }
    else				/* delete case */
      {
        if (found == 0)
  	{
  	  rv = VNET_API_ERROR_NO_SUCH_ENTRY;
  	  goto reply;
  	}
  
        /* find the device entry */
        dp = pool_elt_at_index (mm->devices, kv.value);
  
        /* Remove it from the lookup table */
        clib_bihash_add_del_8_8 (lut, &kv, 0 /* is_add */ );
        vec_free (dp->ranges);
        pool_put (mm->devices, dp);
      }
  
  reply:
    REPLY_MACRO (VL_API_MACTIME_ADD_DEL_RANGE_REPLY);
  }
  
  #include <mactime/mactime.api.c>
  static clib_error_t *
  mactime_init (vlib_main_t * vm)
  {
    mactime_main_t *mm = &mactime_main;
  
    mm->vlib_main = vm;
    mm->vnet_main = vnet_get_main ();
  
    /* Ask for a correctly-sized block of API message decode slots */
    mm->msg_id_base = setup_message_id_table ();
  
    mm->lookup_table_num_buckets = MACTIME_NUM_BUCKETS;
    mm->lookup_table_memory_size = MACTIME_MEMORY_SIZE;
    mm->timezone_offset = -5;	/* US EST / EDT */
    return 0;
  }
  
  /* *INDENT-OFF* */
  VLIB_INIT_FUNCTION (mactime_init) =
  {
    .runs_after = VLIB_INITS("ip_neighbor_init"),
  };
  /* *INDENT-ON* */
  
  static clib_error_t *
  mactime_config (vlib_main_t * vm, unformat_input_t * input)
  {
    mactime_main_t *mm = &mactime_main;
  
    while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
      {
        if (unformat (input, "lookup-table-buckets %u",
  		    &mm->lookup_table_num_buckets))
  	;
        else if (unformat (input, "lookup-table-memory %U",
  			 unformat_memory_size, &mm->lookup_table_memory_size))
  	;
        else if (unformat (input, "timezone_offset %d", &mm->timezone_offset))
  	;
        else
  	{
  	  return clib_error_return (0, "unknown input '%U'",
  				    format_unformat_error, input);
  	}
      }
    return 0;
  }
  
  VLIB_CONFIG_FUNCTION (mactime_config, "mactime");
  
  /* *INDENT-OFF* */
  VNET_FEATURE_INIT (mactime, static) =
  {
    .arc_name = "device-input",
    .node_name = "mactime",
    .runs_before = VNET_FEATURES ("ethernet-input"),
  };
  /* *INDENT-ON */
  
  /* *INDENT-OFF* */
  VNET_FEATURE_INIT (mactime_tx, static) =
  {
    .arc_name = "interface-output",
    .node_name = "mactime-tx",
    .runs_before = VNET_FEATURES ("interface-tx"),
  };
  /* *INDENT-ON */
  
  /* *INDENT-OFF* */
  VLIB_PLUGIN_REGISTER () =
  {
    .version = VPP_BUILD_VER,
    .description = "Time-based MAC Source Address Filter",
  };
  /* *INDENT-ON* */
  
  u8 *
  format_bytes_with_width (u8 * s, va_list * va)
  {
    uword nbytes = va_arg (*va, u64);
    int width = va_arg (*va, int);
    f64 nbytes_f64;
    u8 *fmt;
    char *suffix = "";
  
    if (width > 0)
      fmt = format (0, "%%%d.3f%%s%c", width, 0);
    else
      fmt = format (0, "%%.3f%%s%c", 0);
  
    if (nbytes > (1024ULL * 1024ULL * 1024ULL))
      {
        nbytes_f64 = ((f64) nbytes) / (1024.0 * 1024.0 * 1024.0);
        suffix = "G";
      }
    else if (nbytes > (1024ULL * 1024ULL))
      {
        nbytes_f64 = ((f64) nbytes) / (1024.0 * 1024.0);
        suffix = "M";
      }
    else if (nbytes > 1024ULL)
      {
        nbytes_f64 = ((f64) nbytes) / (1024.0);
        suffix = "K";
      }
    else
      {
        nbytes_f64 = (f64) nbytes;
        suffix = "B";
      }
  
    s = format (s, (char *) fmt, nbytes_f64, suffix);
    vec_free (fmt);
    return s;
  }
  
  static walk_rc_t
  mactime_ip_neighbor_copy (index_t ipni, void *ctx)
  {
    mactime_main_t *mm = ctx;
  
    vec_add1 (mm->arp_cache_copy, ipni);
  
    return (WALK_CONTINUE);
  }
  
  static clib_error_t *
  show_mactime_command_fn (vlib_main_t * vm,
  			 unformat_input_t * input, vlib_cli_command_t * cmd)
  {
    mactime_main_t *mm = &mactime_main;
    mactime_device_t *dp;
    u8 *macstring = 0;
    char *status_string;
    u32 *pool_indices = 0;
    int verbose = 0;
    int current_status = 99;
    int i, j;
    f64 now;
    vlib_counter_t allow, drop;
    ip_neighbor_t *ipn;
  
    if (mm->feature_initialized == 0)
      return clib_error_return
        (0,
         "Feature not initialized, suggest 'help mactime enable-disable'...");
  
    vec_reset_length (mm->arp_cache_copy);
    /* Walk all ip4 neighbours on all interfaces */
    ip_neighbor_walk (AF_IP4, ~0, mactime_ip_neighbor_copy, mm);
  
    now = clib_timebase_now (&mm->timebase);
  
    if (PREDICT_FALSE ((now - mm->sunday_midnight) > 86400.0 * 7.0))
      mm->sunday_midnight = clib_timebase_find_sunday_midnight (now);
  
    if (unformat (input, "verbose %d", &verbose))
      ;
  
    if (unformat (input, "verbose"))
      verbose = 1;
  
    if (verbose)
      vlib_cli_output (vm, "Time now: %U", format_clib_timebase_time, now);
  
    /* *INDENT-OFF* */
    pool_foreach (dp, mm->devices,
    ({
      vec_add1 (pool_indices, dp - mm->devices);
    }));
    /* *INDENT-ON* */
  
    vlib_cli_output (vm, "%-15s %18s %14s %10s %11s %13s",
  		   "Device Name", "Addresses", "Status",
  		   "AllowPkt", "AllowByte", "DropPkt");
  
    for (i = 0; i < vec_len (pool_indices); i++)
      {
        dp = pool_elt_at_index (mm->devices, pool_indices[i]);
  
        /* Check dynamic ranges */
        for (j = 0; j < vec_len (dp->ranges); j++)
  	{
  	  clib_timebase_range_t *r = dp->ranges + j;
  	  f64 start0, end0;
  
  	  start0 = r->start + mm->sunday_midnight;
  	  end0 = r->end + mm->sunday_midnight;
  	  if (verbose > 1)
  	    vlib_cli_output (vm, "  Range %d: %U - %U", j,
  			     format_clib_timebase_time, start0,
  			     format_clib_timebase_time, end0);
  
  	  if (now >= start0 && now <= end0)
  	    {
  	      if (dp->flags & MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW)
  		current_status = 3;
  	      else if (dp->flags & MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW_QUOTA)
  		current_status = 5;
  	      else
  		current_status = 2;
  	      if (verbose)
  		{
  		  vlib_cli_output (vm, "  Time in range %d:", j);
  		  vlib_cli_output (vm, "     %U - %U",
  				   format_clib_timebase_time, start0,
  				   format_clib_timebase_time, end0);
  		}
  	      goto print;
  	    }
  	}
        if (verbose && j)
  	vlib_cli_output (vm, "  No range match.");
        if (dp->flags & MACTIME_DEVICE_FLAG_STATIC_DROP)
  	current_status = 0;
        if (dp->flags & MACTIME_DEVICE_FLAG_STATIC_ALLOW)
  	current_status = 1;
        if (dp->flags & MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW)
  	current_status = 2;
        if (dp->flags & MACTIME_DEVICE_FLAG_DYNAMIC_DROP)
  	current_status = 3;
        if (dp->flags & MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW_QUOTA)
  	current_status = 4;
  
      print:
        vec_reset_length (macstring);
        macstring = format (0, "%U", format_mac_address, dp->mac_address);
        switch (current_status)
  	{
  	case 0:
  	  status_string = "static drop";
  	  break;
  	case 1:
  	  status_string = "static allow";
  	  break;
  	case 2:
  	  status_string = "dynamic drop";
  	  break;
  	case 3:
  	  status_string = "dynamic allow";
  	  break;
  	case 4:
  	  status_string = "d-quota inact";
  	  break;
  	case 5:
  	  status_string = "d-quota activ";
  	  break;
  	default:
  	  status_string = "code bug!";
  	  break;
  	}
        vlib_get_combined_counter (&mm->allow_counters, dp - mm->devices,
  				 &allow);
        vlib_get_combined_counter (&mm->drop_counters, dp - mm->devices, &drop);
        vlib_cli_output (vm, "%-15s %18s %14s %10lld %U %13lld",
  		       dp->device_name, macstring, status_string,
  		       allow.packets, format_bytes_with_width, allow.bytes,
  		       10, drop.packets);
        if (dp->data_quota > 0)
  	vlib_cli_output (vm, "%-54s %s%U %s%U", " ", "Quota ",
  			 format_bytes_with_width, dp->data_quota, 10,
  			 "Use ", format_bytes_with_width,
  			 dp->data_used_in_range, 8);
        /* This is really only good for small N... */
        for (j = 0; j < vec_len (mm->arp_cache_copy); j++)
  	{
  	  ipn = ip_neighbor_get (mm->arp_cache_copy[j]);
  	  if (!memcmp
  	      (dp->mac_address, ipn->ipn_mac.bytes, sizeof (ipn->ipn_mac)))
  	    {
  	      vlib_cli_output (vm, "%17s%U", " ", format_ip46_address,
  			       ip_neighbor_get_ip (ipn), IP46_TYPE_IP4);
  	    }
  	}
      }
    vec_free (macstring);
    vec_free (pool_indices);
  
    return 0;
  }
  
  /* *INDENT-OFF* */
  VLIB_CLI_COMMAND (show_mactime_command, static) =
  {
    .path = "show mactime",
    .short_help = "show mactime [verbose]",
    .function = show_mactime_command_fn,
  };
  /* *INDENT-ON* */
  
  static clib_error_t *
  clear_mactime_command_fn (vlib_main_t * vm,
  			  unformat_input_t * input, vlib_cli_command_t * cmd)
  {
    mactime_main_t *mm = &mactime_main;
  
    if (mm->feature_initialized == 0)
      return clib_error_return
        (0,
         "Feature not initialized, suggest 'help mactime enable-disable'...");
  
    vlib_clear_combined_counters (&mm->allow_counters);
    vlib_clear_combined_counters (&mm->drop_counters);
    vlib_cli_output (vm, "Mactime counters cleared...");
    return 0;
  }
  
  /* *INDENT-OFF* */
  VLIB_CLI_COMMAND (clear_mactime_command, static) =
  {
    .path = "clear mactime",
    .short_help = "clear mactime counters",
    .function = clear_mactime_command_fn,
  };
  /* *INDENT-ON* */
  
  
  
  /*
   * fd.io coding-style-patch-verification: ON
   *
   * Local Variables:
   * eval: (c-set-style "gnu")
   * End:
   */
  