src/vnet/interface_format.c - fdio/vpp - Gitiles

 /*
  * Copyright (c) 2015 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.
  */
 /*
  * interface_format.c: interface formatting
  *
  * Copyright (c) 2008 Eliot Dresselhaus
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
  * "Software"), to deal in the Software without restriction, including
  * without limitation the rights to use, copy, modify, merge, publish,
  * distribute, sublicense, and/or sell copies of the Software, and to
  * permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
  *
  * The above copyright notice and this permission notice shall be
  * included in all copies or substantial portions of the Software.
  *
  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */

 #include <vnet/vnet.h>
 #include <vppinfra/bitmap.h>

 u8 *
 format_vnet_sw_interface_flags (u8 * s, va_list * args)
 {
   u32 flags = va_arg (*args, u32);

   if (flags & VNET_SW_INTERFACE_FLAG_BOND_SLAVE)
     s = format (s, "bond-slave");
   else
     {
       s = format (s, "%s",
 		  (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? "up" : "down");
       if (flags & VNET_SW_INTERFACE_FLAG_PUNT)
 	s = format (s, "/punt");
     }

   return s;
 }

 u8 *
 format_vnet_hw_interface (u8 * s, va_list * args)
 {
   vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
   vnet_hw_interface_t *hi = va_arg (*args, vnet_hw_interface_t *);
   vnet_hw_interface_class_t *hw_class;
   vnet_device_class_t *dev_class;
   int verbose = va_arg (*args, int);
   uword indent;

   if (!hi)
     return format (s, "%=32s%=6s%=8s%s", "Name", "Idx", "Link", "Hardware");

   indent = format_get_indent (s);

   s = format (s, "%-32v%=6d", hi->name, hi->hw_if_index);

   if (hi->bond_info == VNET_HW_INTERFACE_BOND_INFO_SLAVE)
     s = format (s, "%=8s", "slave");
   else
     s = format (s, "%=8s",
 		hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP ? "up" : "down");

   hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
   dev_class = vnet_get_device_class (vnm, hi->dev_class_index);

   if (hi->bond_info && (hi->bond_info != VNET_HW_INTERFACE_BOND_INFO_SLAVE))
     {
       int hw_idx;
       s = format (s, "Slave-Idx:");
       clib_bitmap_foreach (hw_idx, hi->bond_info, s =
 			   format (s, " %d", hw_idx));
     }
   else if (dev_class->format_device_name)
     s = format (s, "%U", dev_class->format_device_name, hi->dev_instance);
   else
     s = format (s, "%s%d", dev_class->name, hi->dev_instance);

   if (verbose)
     {
       if (hw_class->format_device)
 	s = format (s, "\n%U%U",
 		    format_white_space, indent + 2,
 		    hw_class->format_device, hi->hw_if_index, verbose);
       else
 	{
 	  s = format (s, "\n%U%s",
 		      format_white_space, indent + 2, hw_class->name);
 	  if (hw_class->format_address && vec_len (hi->hw_address) > 0)
 	    s =
 	      format (s, " address %U", hw_class->format_address,
 		      hi->hw_address);
 	}

       if (dev_class->format_device)
 	s = format (s, "\n%U%U",
 		    format_white_space, indent + 2,
 		    dev_class->format_device, hi->dev_instance, verbose);
     }

   return s;
 }

 u8 *
 format_vnet_sw_interface_name (u8 * s, va_list * args)
 {
   vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
   vnet_sw_interface_t *si = va_arg (*args, vnet_sw_interface_t *);
   vnet_sw_interface_t *si_sup =
     vnet_get_sup_sw_interface (vnm, si->sw_if_index);
   vnet_hw_interface_t *hi_sup;

   ASSERT (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
   hi_sup = vnet_get_hw_interface (vnm, si_sup->hw_if_index);

   s = format (s, "%v", hi_sup->name);

   if (si->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
     s = format (s, ".%d", si->sub.id);

   return s;
 }

 u8 *
 format_vnet_sw_if_index_name (u8 * s, va_list * args)
 {
   vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
   u32 sw_if_index = va_arg (*args, u32);
   return format (s, "%U",
 		 format_vnet_sw_interface_name, vnm,
 		 vnet_get_sw_interface (vnm, sw_if_index));
 }

 u8 *
 format_vnet_sw_interface_cntrs (u8 * s, vnet_interface_main_t * im,
 				vnet_sw_interface_t * si)
 {
   uword indent, n_printed;
   int i, j, n_counters;
   static vnet_main_t **my_vnet_mains;

   vec_reset_length (my_vnet_mains);

   indent = format_get_indent (s);
   n_printed = 0;

   {
     vlib_combined_counter_main_t *cm;
     vlib_counter_t v, vtotal;
     u8 *n = 0;

     for (i = 0; i < vec_len (vnet_mains); i++)
       {
 	if (vnet_mains[i])
 	  vec_add1 (my_vnet_mains, vnet_mains[i]);
       }

     if (vec_len (my_vnet_mains) == 0)
       vec_add1 (my_vnet_mains, &vnet_main);

     /* Each vnet_main_t has its own copy of the interface counters */
     n_counters = vec_len (im->combined_sw_if_counters);

     /* rx, tx counters... */
     for (j = 0; j < n_counters; j++)
       {
 	vtotal.packets = 0;
 	vtotal.bytes = 0;

 	for (i = 0; i < vec_len (my_vnet_mains); i++)
 	  {
 	    im = &my_vnet_mains[i]->interface_main;
 	    cm = im->combined_sw_if_counters + j;
 	    vlib_get_combined_counter (cm, si->sw_if_index, &v);
 	    vtotal.packets += v.packets;
 	    vtotal.bytes += v.bytes;
 	  }

 	/* Only display non-zero counters. */
 	if (vtotal.packets == 0)
 	  continue;

 	if (n_printed > 0)
 	  s = format (s, "\n%U", format_white_space, indent);
 	n_printed += 2;

 	if (n)
 	  _vec_len (n) = 0;
 	n = format (n, "%s packets", cm->name);
 	s = format (s, "%-16v%16Ld", n, vtotal.packets);

 	_vec_len (n) = 0;
 	n = format (n, "%s bytes", cm->name);
 	s = format (s, "\n%U%-16v%16Ld",
 		    format_white_space, indent, n, vtotal.bytes);
       }
     vec_free (n);
   }

   {
     vlib_simple_counter_main_t *cm;
     u64 v, vtotal;

     n_counters = vec_len (im->sw_if_counters);

     for (j = 0; j < n_counters; j++)
       {
 	vtotal = 0;

 	for (i = 0; i < vec_len (my_vnet_mains); i++)
 	  {
 	    im = &my_vnet_mains[i]->interface_main;
 	    cm = im->sw_if_counters + j;

 	    v = vlib_get_simple_counter (cm, si->sw_if_index);
 	    vtotal += v;
 	  }

 	/* Only display non-zero counters. */
 	if (vtotal == 0)
 	  continue;

 	if (n_printed > 0)
 	  s = format (s, "\n%U", format_white_space, indent);
 	n_printed += 1;

 	s = format (s, "%-16s%16Ld", cm->name, vtotal);
       }
   }

   return s;
 }

 u8 *
 format_vnet_sw_interface (u8 * s, va_list * args)
 {
   vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
   vnet_sw_interface_t *si = va_arg (*args, vnet_sw_interface_t *);
   vnet_interface_main_t *im = &vnm->interface_main;

   if (!si)
     return format (s, "%=32s%=5s%=16s%=16s%=16s",
 		   "Name", "Idx", "State", "Counter", "Count");

   s = format (s, "%-32U%=5d%=16U",
 	      format_vnet_sw_interface_name, vnm, si, si->sw_if_index,
 	      format_vnet_sw_interface_flags, si->flags);

   s = format_vnet_sw_interface_cntrs (s, im, si);

   return s;
 }

 u8 *
 format_vnet_sw_interface_name_override (u8 * s, va_list * args)
 {
   vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
   vnet_sw_interface_t *si = va_arg (*args, vnet_sw_interface_t *);
   /* caller supplied display name for this interface */
   u8 *name = va_arg (*args, u8 *);
   vnet_interface_main_t *im = &vnm->interface_main;


   if (!si)
     return format (s, "%=32s%=5s%=16s%=16s%=16s",
 		   "Name", "Idx", "State", "Counter", "Count");

   s = format (s, "%-32v%=5d%=16U",
 	      name, si->sw_if_index,
 	      format_vnet_sw_interface_flags, si->flags);

   s = format_vnet_sw_interface_cntrs (s, im, si);

   return s;
 }

 uword
 unformat_vnet_hw_interface (unformat_input_t * input, va_list * args)
 {
   vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
   u32 *hw_if_index = va_arg (*args, u32 *);
   vnet_interface_main_t *im = &vnm->interface_main;
   vnet_device_class_t *c;

   /* Try per device class functions first. */
   vec_foreach (c, im->device_classes)
   {
     if (c->unformat_device_name
 	&& unformat_user (input, c->unformat_device_name, hw_if_index))
       return 1;
   }

   return unformat_user (input, unformat_hash_vec_string,
 			im->hw_interface_by_name, hw_if_index);
 }

 uword
 unformat_vnet_sw_interface (unformat_input_t * input, va_list * args)
 {
   vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
   u32 *result = va_arg (*args, u32 *);
   vnet_hw_interface_t *hi;
   u32 hw_if_index, id, id_specified;
   u8 *if_name = 0;
   uword *p, error = 0;

   id = ~0;
   if (unformat (input, "%_%v.%d%_", &if_name, &id)
       && ((p = hash_get (vnm->interface_main.hw_interface_by_name, if_name))))
     {
       hw_if_index = p[0];
       id_specified = 1;
     }
   else
     if (unformat (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
     id_specified = 0;
   else
     goto done;

   hi = vnet_get_hw_interface (vnm, hw_if_index);
   if (!id_specified)
     {
       *result = hi->sw_if_index;
     }
   else
     {
       if (!(p = hash_get (hi->sub_interface_sw_if_index_by_id, id)))
 	return 0;
       *result = p[0];
     }
   error = 1;
 done:
   vec_free (if_name);
   return error;
 }

 uword
 unformat_vnet_sw_interface_flags (unformat_input_t * input, va_list * args)
 {
   u32 *result = va_arg (*args, u32 *);
   u32 flags = 0;

   if (unformat (input, "up"))
     flags |= VNET_SW_INTERFACE_FLAG_ADMIN_UP;
   else if (unformat (input, "down"))
     flags &= ~VNET_SW_INTERFACE_FLAG_ADMIN_UP;
   else if (unformat (input, "punt"))
     flags |= VNET_SW_INTERFACE_FLAG_PUNT;
   else if (unformat (input, "enable"))
     flags &= ~VNET_SW_INTERFACE_FLAG_PUNT;
   else
     return 0;

   *result = flags;
   return 1;
 }

 uword
 unformat_vnet_hw_interface_flags (unformat_input_t * input, va_list * args)
 {
   u32 *result = va_arg (*args, u32 *);
   u32 flags = 0;

   if (unformat (input, "up"))
     flags |= VNET_HW_INTERFACE_FLAG_LINK_UP;
   else if (unformat (input, "down"))
     flags &= ~VNET_HW_INTERFACE_FLAG_LINK_UP;
   else
     return 0;

   *result = flags;
   return 1;
 }

 /*
  * fd.io coding-style-patch-verification: ON
  *
  * Local Variables:
  * eval: (c-set-style "gnu")
  * End:
  */
	/*
	* Copyright (c) 2015 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.
	*/
	/*
	* interface_format.c: interface formatting
	*
	* Copyright (c) 2008 Eliot Dresselhaus
	*
	* Permission is hereby granted, free of charge, to any person obtaining
	* a copy of this software and associated documentation files (the
	* "Software"), to deal in the Software without restriction, including
	* without limitation the rights to use, copy, modify, merge, publish,
	* distribute, sublicense, and/or sell copies of the Software, and to
	* permit persons to whom the Software is furnished to do so, subject to
	* the following conditions:
	*
	* The above copyright notice and this permission notice shall be
	* included in all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
	* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
	* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
	* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	*/

	#include <vnet/vnet.h>
	#include <vppinfra/bitmap.h>

	u8 *
	format_vnet_sw_interface_flags (u8 * s, va_list * args)
	{
	u32 flags = va_arg (*args, u32);

	if (flags & VNET_SW_INTERFACE_FLAG_BOND_SLAVE)
	s = format (s, "bond-slave");
	else
	{
	s = format (s, "%s",
	(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? "up" : "down");
	if (flags & VNET_SW_INTERFACE_FLAG_PUNT)
	s = format (s, "/punt");
	}

	return s;
	}

	u8 *
	format_vnet_hw_interface (u8 * s, va_list * args)
	{
	vnet_main_t vnm = va_arg (args, vnet_main_t *);
	vnet_hw_interface_t hi = va_arg (args, vnet_hw_interface_t *);
	vnet_hw_interface_class_t *hw_class;
	vnet_device_class_t *dev_class;
	int verbose = va_arg (*args, int);
	uword indent;

	if (!hi)
	return format (s, "%=32s%=6s%=8s%s", "Name", "Idx", "Link", "Hardware");

	indent = format_get_indent (s);

	s = format (s, "%-32v%=6d", hi->name, hi->hw_if_index);

	if (hi->bond_info == VNET_HW_INTERFACE_BOND_INFO_SLAVE)
	s = format (s, "%=8s", "slave");
	else
	s = format (s, "%=8s",
	hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP ? "up" : "down");

	hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
	dev_class = vnet_get_device_class (vnm, hi->dev_class_index);

	if (hi->bond_info && (hi->bond_info != VNET_HW_INTERFACE_BOND_INFO_SLAVE))
	{
	int hw_idx;
	s = format (s, "Slave-Idx:");
	clib_bitmap_foreach (hw_idx, hi->bond_info, s =
	format (s, " %d", hw_idx));
	}
	else if (dev_class->format_device_name)
	s = format (s, "%U", dev_class->format_device_name, hi->dev_instance);
	else
	s = format (s, "%s%d", dev_class->name, hi->dev_instance);

	if (verbose)
	{
	if (hw_class->format_device)
	s = format (s, "\n%U%U",
	format_white_space, indent + 2,
	hw_class->format_device, hi->hw_if_index, verbose);
	else
	{
	s = format (s, "\n%U%s",
	format_white_space, indent + 2, hw_class->name);
	if (hw_class->format_address && vec_len (hi->hw_address) > 0)
	s =
	format (s, " address %U", hw_class->format_address,
	hi->hw_address);
	}

	if (dev_class->format_device)
	s = format (s, "\n%U%U",
	format_white_space, indent + 2,
	dev_class->format_device, hi->dev_instance, verbose);
	}

	return s;
	}

	u8 *
	format_vnet_sw_interface_name (u8 * s, va_list * args)
	{
	vnet_main_t vnm = va_arg (args, vnet_main_t *);
	vnet_sw_interface_t si = va_arg (args, vnet_sw_interface_t *);
	vnet_sw_interface_t *si_sup =
	vnet_get_sup_sw_interface (vnm, si->sw_if_index);
	vnet_hw_interface_t *hi_sup;

	ASSERT (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
	hi_sup = vnet_get_hw_interface (vnm, si_sup->hw_if_index);

	s = format (s, "%v", hi_sup->name);

	if (si->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
	s = format (s, ".%d", si->sub.id);

	return s;
	}

	u8 *
	format_vnet_sw_if_index_name (u8 * s, va_list * args)
	{
	vnet_main_t vnm = va_arg (args, vnet_main_t *);
	u32 sw_if_index = va_arg (*args, u32);
	return format (s, "%U",
	format_vnet_sw_interface_name, vnm,
	vnet_get_sw_interface (vnm, sw_if_index));
	}

	u8 *
	format_vnet_sw_interface_cntrs (u8 * s, vnet_interface_main_t * im,
	vnet_sw_interface_t * si)
	{
	uword indent, n_printed;
	int i, j, n_counters;
	static vnet_main_t **my_vnet_mains;

	vec_reset_length (my_vnet_mains);

	indent = format_get_indent (s);
	n_printed = 0;

	{
	vlib_combined_counter_main_t *cm;
	vlib_counter_t v, vtotal;
	u8 *n = 0;

	for (i = 0; i < vec_len (vnet_mains); i++)
	{
	if (vnet_mains[i])
	vec_add1 (my_vnet_mains, vnet_mains[i]);
	}

	if (vec_len (my_vnet_mains) == 0)
	vec_add1 (my_vnet_mains, &vnet_main);

	/* Each vnet_main_t has its own copy of the interface counters */
	n_counters = vec_len (im->combined_sw_if_counters);

	/* rx, tx counters... */
	for (j = 0; j < n_counters; j++)
	{
	vtotal.packets = 0;
	vtotal.bytes = 0;

	for (i = 0; i < vec_len (my_vnet_mains); i++)
	{
	im = &my_vnet_mains[i]->interface_main;
	cm = im->combined_sw_if_counters + j;
	vlib_get_combined_counter (cm, si->sw_if_index, &v);
	vtotal.packets += v.packets;
	vtotal.bytes += v.bytes;
	}

	/* Only display non-zero counters. */
	if (vtotal.packets == 0)
	continue;

	if (n_printed > 0)
	s = format (s, "\n%U", format_white_space, indent);
	n_printed += 2;

	if (n)
	_vec_len (n) = 0;
	n = format (n, "%s packets", cm->name);
	s = format (s, "%-16v%16Ld", n, vtotal.packets);

	_vec_len (n) = 0;
	n = format (n, "%s bytes", cm->name);
	s = format (s, "\n%U%-16v%16Ld",
	format_white_space, indent, n, vtotal.bytes);
	}
	vec_free (n);
	}

	{
	vlib_simple_counter_main_t *cm;
	u64 v, vtotal;

	n_counters = vec_len (im->sw_if_counters);

	for (j = 0; j < n_counters; j++)
	{
	vtotal = 0;

	for (i = 0; i < vec_len (my_vnet_mains); i++)
	{
	im = &my_vnet_mains[i]->interface_main;
	cm = im->sw_if_counters + j;

	v = vlib_get_simple_counter (cm, si->sw_if_index);
	vtotal += v;
	}

	/* Only display non-zero counters. */
	if (vtotal == 0)
	continue;

	if (n_printed > 0)
	s = format (s, "\n%U", format_white_space, indent);
	n_printed += 1;

	s = format (s, "%-16s%16Ld", cm->name, vtotal);
	}
	}

	return s;
	}

	u8 *
	format_vnet_sw_interface (u8 * s, va_list * args)
	{
	vnet_main_t vnm = va_arg (args, vnet_main_t *);
	vnet_sw_interface_t si = va_arg (args, vnet_sw_interface_t *);
	vnet_interface_main_t *im = &vnm->interface_main;

	if (!si)
	return format (s, "%=32s%=5s%=16s%=16s%=16s",
	"Name", "Idx", "State", "Counter", "Count");

	s = format (s, "%-32U%=5d%=16U",
	format_vnet_sw_interface_name, vnm, si, si->sw_if_index,
	format_vnet_sw_interface_flags, si->flags);

	s = format_vnet_sw_interface_cntrs (s, im, si);

	return s;
	}

	u8 *
	format_vnet_sw_interface_name_override (u8 * s, va_list * args)
	{
	vnet_main_t vnm = va_arg (args, vnet_main_t *);
	vnet_sw_interface_t si = va_arg (args, vnet_sw_interface_t *);
	/* caller supplied display name for this interface */
	u8 name = va_arg (args, u8 *);
	vnet_interface_main_t *im = &vnm->interface_main;


	if (!si)
	return format (s, "%=32s%=5s%=16s%=16s%=16s",
	"Name", "Idx", "State", "Counter", "Count");

	s = format (s, "%-32v%=5d%=16U",
	name, si->sw_if_index,
	format_vnet_sw_interface_flags, si->flags);

	s = format_vnet_sw_interface_cntrs (s, im, si);

	return s;
	}

	uword
	unformat_vnet_hw_interface (unformat_input_t * input, va_list * args)
	{
	vnet_main_t vnm = va_arg (args, vnet_main_t *);
	u32 hw_if_index = va_arg (args, u32 *);
	vnet_interface_main_t *im = &vnm->interface_main;
	vnet_device_class_t *c;

	/* Try per device class functions first. */
	vec_foreach (c, im->device_classes)
	{
	if (c->unformat_device_name
	&& unformat_user (input, c->unformat_device_name, hw_if_index))
	return 1;
	}

	return unformat_user (input, unformat_hash_vec_string,
	im->hw_interface_by_name, hw_if_index);
	}

	uword
	unformat_vnet_sw_interface (unformat_input_t * input, va_list * args)
	{
	vnet_main_t vnm = va_arg (args, vnet_main_t *);
	u32 result = va_arg (args, u32 *);
	vnet_hw_interface_t *hi;
	u32 hw_if_index, id, id_specified;
	u8 *if_name = 0;
	uword *p, error = 0;

	id = ~0;
	if (unformat (input, "%_%v.%d%_", &if_name, &id)
	&& ((p = hash_get (vnm->interface_main.hw_interface_by_name, if_name))))
	{
	hw_if_index = p[0];
	id_specified = 1;
	}
	else
	if (unformat (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
	id_specified = 0;
	else
	goto done;

	hi = vnet_get_hw_interface (vnm, hw_if_index);
	if (!id_specified)
	{
	*result = hi->sw_if_index;
	}
	else
	{
	if (!(p = hash_get (hi->sub_interface_sw_if_index_by_id, id)))
	return 0;
	*result = p[0];
	}
	error = 1;
	done:
	vec_free (if_name);
	return error;
	}

	uword
	unformat_vnet_sw_interface_flags (unformat_input_t * input, va_list * args)
	{
	u32 result = va_arg (args, u32 *);
	u32 flags = 0;

	if (unformat (input, "up"))
	flags \|= VNET_SW_INTERFACE_FLAG_ADMIN_UP;
	else if (unformat (input, "down"))
	flags &= ~VNET_SW_INTERFACE_FLAG_ADMIN_UP;
	else if (unformat (input, "punt"))
	flags \|= VNET_SW_INTERFACE_FLAG_PUNT;
	else if (unformat (input, "enable"))
	flags &= ~VNET_SW_INTERFACE_FLAG_PUNT;
	else
	return 0;

	*result = flags;
	return 1;
	}

	uword
	unformat_vnet_hw_interface_flags (unformat_input_t * input, va_list * args)
	{
	u32 result = va_arg (args, u32 *);
	u32 flags = 0;

	if (unformat (input, "up"))
	flags \|= VNET_HW_INTERFACE_FLAG_LINK_UP;
	else if (unformat (input, "down"))
	flags &= ~VNET_HW_INTERFACE_FLAG_LINK_UP;
	else
	return 0;

	*result = flags;
	return 1;
	}

	/*
	* fd.io coding-style-patch-verification: ON
	*
	* Local Variables:
	* eval: (c-set-style "gnu")
	* End:
	*/