src/vnet/devices/tap/tapv2_api.c - fdio/vpp - Gitiles

 /*
  *------------------------------------------------------------------
  * tap_api.c - vnet tap device driver API support
  *
  * Copyright (c) 2017 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 <vlibmemory/api.h>

 #include <vnet/interface.h>
 #include <vnet/api_errno.h>
 #include <vnet/ethernet/ethernet.h>
 #include <vnet/ip/ip.h>
 #include <vnet/ethernet/ethernet_types_api.h>
 #include <vnet/ip/ip_types_api.h>
 #include <vnet/devices/tap/tap.h>

 #include <vnet/format_fns.h>
 #include <vnet/devices/tap/tapv2.api_enum.h>
 #include <vnet/devices/tap/tapv2.api_types.h>

 #define REPLY_MSG_ID_BASE tap_main.msg_id_base
 #include <vlibapi/api_helper_macros.h>

 static void
 vl_api_tap_create_v3_t_handler (vl_api_tap_create_v3_t *mp)
 {
   vl_api_registration_t *reg;
   int rv;

   reg = vl_api_client_index_to_registration (mp->client_index);
   if (!reg)
     return;

   vnet_main_t *vnm = vnet_get_main ();
   vlib_main_t *vm = vlib_get_main ();
   vl_api_tap_create_v3_reply_t *rmp;

   tap_create_if_args_t _a, *ap = &_a;

   clib_memset (ap, 0, sizeof (*ap));

   ap->id = mp->id;
   if (!mp->use_random_mac)
     {
       mac_address_decode (mp->mac_address, &ap->mac_addr);
       ap->mac_addr_set = 1;
     }
   ap->rx_ring_sz = mp->rx_ring_sz;
   ap->tx_ring_sz = mp->tx_ring_sz;
   ap->sw_if_index = (u32) ~0;
   ap->num_rx_queues = clib_max (1, mp->num_rx_queues);
   ap->num_tx_queues = mp->num_tx_queues;

   if (mp->host_if_name_set)
     ap->host_if_name = format (0, "%s%c", mp->host_if_name, 0);

   if (mp->host_mac_addr_set)
     {
       mac_address_decode (mp->host_mac_addr, &ap->host_mac_addr);
     }

   if (mp->host_namespace_set)
     ap->host_namespace = format (0, "%s%c", mp->host_namespace, 0);

   if (mp->host_bridge_set)
     ap->host_bridge = format (0, "%s%c", mp->host_bridge, 0);

   if (mp->host_ip4_prefix_set)
     {
       ip4_address_decode (mp->host_ip4_prefix.address, &ap->host_ip4_addr);
       ap->host_ip4_prefix_len = mp->host_ip4_prefix.len;
     }

   if (mp->host_ip6_prefix_set)
     {
       ip6_address_decode (mp->host_ip6_prefix.address, &ap->host_ip6_addr);
       ap->host_ip6_prefix_len = mp->host_ip6_prefix.len;
     }

   if (mp->host_ip4_gw_set)
     {
       ip4_address_decode (mp->host_ip4_gw, &ap->host_ip4_gw);
       ap->host_ip4_gw_set = 1;
     }

   if (mp->host_ip6_gw_set)
     {
       ip6_address_decode (mp->host_ip6_gw, &ap->host_ip6_gw);
       ap->host_ip6_gw_set = 1;
     }

   if (mp->host_mtu_set)
     {
       ap->host_mtu_size = mp->host_mtu_size;
       ap->host_mtu_set = 1;
     }

   ap->tap_flags = mp->tap_flags;

   tap_create_if (vm, ap);

   /* If a tag was supplied... */
   if (vl_api_string_len (&mp->tag))
     {
       u8 *tag = vl_api_from_api_to_new_vec (mp, &mp->tag);
       vnet_set_sw_interface_tag (vnm, tag, ap->sw_if_index);
     }

   vec_free (ap->host_if_name);
   vec_free (ap->host_namespace);
   vec_free (ap->host_bridge);

   rv = ap->rv;
   REPLY_MACRO2_END (VL_API_TAP_CREATE_V3_REPLY,
 		    ({ rmp->sw_if_index = ap->sw_if_index; }));
 }

 static void
 vl_api_tap_create_v2_t_handler (vl_api_tap_create_v2_t * mp)
 {
   vl_api_registration_t *reg;
   reg = vl_api_client_index_to_registration (mp->client_index);
   if (!reg)
     return;

   vnet_main_t *vnm = vnet_get_main ();
   vlib_main_t *vm = vlib_get_main ();
   vl_api_tap_create_v2_reply_t *rmp;

   tap_create_if_args_t _a, *ap = &_a;

   clib_memset (ap, 0, sizeof (*ap));

   ap->id = ntohl (mp->id);
   if (!mp->use_random_mac)
     {
       mac_address_decode (mp->mac_address, &ap->mac_addr);
       ap->mac_addr_set = 1;
     }
   ap->rx_ring_sz = ntohs (mp->rx_ring_sz);
   ap->tx_ring_sz = ntohs (mp->tx_ring_sz);
   ap->sw_if_index = (u32) ~ 0;
   ap->num_rx_queues = 1;
   ap->num_tx_queues = 1;

   if (mp->num_rx_queues > 1)
     ap->num_rx_queues = mp->num_rx_queues;

   if (mp->host_if_name_set)
     ap->host_if_name = format (0, "%s%c", mp->host_if_name, 0);

   if (mp->host_mac_addr_set)
     {
       mac_address_decode (mp->host_mac_addr, &ap->host_mac_addr);
     }

   if (mp->host_namespace_set)
     ap->host_namespace = format (0, "%s%c", mp->host_namespace, 0);

   if (mp->host_bridge_set)
     ap->host_bridge = format (0, "%s%c", mp->host_bridge, 0);

   if (mp->host_ip4_prefix_set)
     {
       ip4_address_decode (mp->host_ip4_prefix.address, &ap->host_ip4_addr);
       ap->host_ip4_prefix_len = mp->host_ip4_prefix.len;
     }

   if (mp->host_ip6_prefix_set)
     {
       ip6_address_decode (mp->host_ip6_prefix.address, &ap->host_ip6_addr);
       ap->host_ip6_prefix_len = mp->host_ip6_prefix.len;
     }

   if (mp->host_ip4_gw_set)
     {
       ip4_address_decode (mp->host_ip4_gw, &ap->host_ip4_gw);
       ap->host_ip4_gw_set = 1;
     }

   if (mp->host_ip6_gw_set)
     {
       ip6_address_decode (mp->host_ip6_gw, &ap->host_ip6_gw);
       ap->host_ip6_gw_set = 1;
     }

   if (mp->host_mtu_set)
     {
       ap->host_mtu_size = ntohl (mp->host_mtu_size);
       ap->host_mtu_set = 1;
     }

   STATIC_ASSERT (((int) TAP_API_FLAG_GSO == (int) TAP_FLAG_GSO),
 		 "tap gso api flag mismatch");
   STATIC_ASSERT (((int) TAP_API_FLAG_CSUM_OFFLOAD ==
 		  (int) TAP_FLAG_CSUM_OFFLOAD),
 		 "tap checksum offload api flag mismatch");
   STATIC_ASSERT (((int) TAP_API_FLAG_PERSIST == (int) TAP_FLAG_PERSIST),
 		 "tap persist api flag mismatch");
   STATIC_ASSERT (((int) TAP_API_FLAG_ATTACH == (int) TAP_FLAG_ATTACH),
 		 "tap attach api flag mismatch");
   STATIC_ASSERT (((int) TAP_API_FLAG_TUN == (int) TAP_FLAG_TUN),
 		 "tap tun api flag mismatch");
   STATIC_ASSERT (((int) TAP_API_FLAG_GRO_COALESCE ==
 		  (int) TAP_FLAG_GRO_COALESCE),
 		 "tap gro coalesce api flag mismatch");
   STATIC_ASSERT (((int) TAP_API_FLAG_PACKED == (int) TAP_FLAG_PACKED),
 		 "tap packed api flag mismatch");
   STATIC_ASSERT (((int) TAP_API_FLAG_IN_ORDER ==
 		  (int) TAP_FLAG_IN_ORDER), "tap in-order api flag mismatch");

   ap->tap_flags = ntohl (mp->tap_flags);

   tap_create_if (vm, ap);


   /* If a tag was supplied... */
   if (vl_api_string_len (&mp->tag))
     {
       u8 *tag = vl_api_from_api_to_new_vec (mp, &mp->tag);
       vnet_set_sw_interface_tag (vnm, tag, ap->sw_if_index);
     }

   rmp = vl_msg_api_alloc (sizeof (*rmp));
   rmp->_vl_msg_id = ntohs (REPLY_MSG_ID_BASE + VL_API_TAP_CREATE_V2_REPLY);
   rmp->context = mp->context;
   rmp->retval = ntohl (ap->rv);
   rmp->sw_if_index = ntohl (ap->sw_if_index);

   vl_api_send_msg (reg, (u8 *) rmp);

   vec_free (ap->host_if_name);
   vec_free (ap->host_namespace);
   vec_free (ap->host_bridge);

 }

 static void
 vl_api_tap_delete_v2_t_handler (vl_api_tap_delete_v2_t * mp)
 {
   vl_api_registration_t *reg;
   reg = vl_api_client_index_to_registration (mp->client_index);
   if (!reg)
     return;

   vnet_main_t *vnm = vnet_get_main ();
   vlib_main_t *vm = vlib_get_main ();
   int rv;
   vl_api_tap_delete_v2_reply_t *rmp;

   u32 sw_if_index = ntohl (mp->sw_if_index);

   rv = tap_delete_if (vm, sw_if_index);

   rmp = vl_msg_api_alloc (sizeof (*rmp));
   rmp->_vl_msg_id = ntohs (REPLY_MSG_ID_BASE + VL_API_TAP_DELETE_V2_REPLY);
   rmp->context = mp->context;
   rmp->retval = ntohl (rv);

   vl_api_send_msg (reg, (u8 *) rmp);

   if (!rv)
     vnet_clear_sw_interface_tag (vnm, sw_if_index);
 }

 static void
 tap_send_sw_interface_details (vpe_api_main_t * am,
 			       vl_api_registration_t * reg,
 			       tap_interface_details_t * tap_if, u32 context)
 {
   vl_api_sw_interface_tap_v2_details_t *mp;
   mp = vl_msg_api_alloc (sizeof (*mp));
   clib_memset (mp, 0, sizeof (*mp));
   mp->_vl_msg_id =
     htons (REPLY_MSG_ID_BASE + VL_API_SW_INTERFACE_TAP_V2_DETAILS);
   mp->id = htonl (tap_if->id);
   mp->sw_if_index = htonl (tap_if->sw_if_index);
   mp->tap_flags = htonl (tap_if->tap_flags);
   clib_memcpy (mp->dev_name, tap_if->dev_name,
 	       MIN (ARRAY_LEN (mp->dev_name) - 1,
 		    strlen ((const char *) tap_if->dev_name)));
   mp->rx_ring_sz = htons (tap_if->rx_ring_sz);
   mp->tx_ring_sz = htons (tap_if->tx_ring_sz);
   mac_address_encode (&tap_if->host_mac_addr, mp->host_mac_addr);
   clib_memcpy (mp->host_if_name, tap_if->host_if_name,
 	       MIN (ARRAY_LEN (mp->host_if_name) - 1,
 		    strlen ((const char *) tap_if->host_if_name)));
   clib_memcpy (mp->host_namespace, tap_if->host_namespace,
 	       MIN (ARRAY_LEN (mp->host_namespace) - 1,
 		    strlen ((const char *) tap_if->host_namespace)));
   clib_memcpy (mp->host_bridge, tap_if->host_bridge,
 	       MIN (ARRAY_LEN (mp->host_bridge) - 1,
 		    strlen ((const char *) tap_if->host_bridge)));
   mp->host_mtu_size = htonl (tap_if->host_mtu_size);
   mac_address_encode (&tap_if->host_mac_addr, mp->host_mac_addr);

   if (tap_if->host_ip4_prefix_len)
     ip4_address_encode (&tap_if->host_ip4_addr, mp->host_ip4_prefix.address);
   mp->host_ip4_prefix.len = tap_if->host_ip4_prefix_len;
   if (tap_if->host_ip6_prefix_len)
     ip6_address_encode (&tap_if->host_ip6_addr, mp->host_ip6_prefix.address);
   mp->host_ip6_prefix.len = tap_if->host_ip6_prefix_len;

   mp->context = context;
   vl_api_send_msg (reg, (u8 *) mp);
 }

 static void
 vl_api_sw_interface_tap_v2_dump_t_handler (vl_api_sw_interface_tap_v2_dump_t *
 					   mp)
 {
   int rv;
   vpe_api_main_t *am = &vpe_api_main;
   vl_api_registration_t *reg;
   tap_interface_details_t *tapifs = NULL;
   tap_interface_details_t *tap_if = NULL;
   u32 filter_sw_if_index;

   reg = vl_api_client_index_to_registration (mp->client_index);
   if (!reg)
     return;

   filter_sw_if_index = htonl (mp->sw_if_index);
   if (mp->sw_if_index != ~0)
     VALIDATE_SW_IF_INDEX (mp);

   rv = tap_dump_ifs (&tapifs);
   if (rv)
     return;

   vec_foreach (tap_if, tapifs)
   {
     if ((filter_sw_if_index == ~0)
 	|| (tap_if->sw_if_index == filter_sw_if_index))
       tap_send_sw_interface_details (am, reg, tap_if, mp->context);
   }
   BAD_SW_IF_INDEX_LABEL;
   vec_free (tapifs);
 }

 #include <vnet/devices/tap/tapv2.api.c>
 static clib_error_t *
 tapv2_api_hookup (vlib_main_t * vm)
 {
   /*
    * Set up the (msg_name, crc, message-id) table
    */
   REPLY_MSG_ID_BASE = setup_message_id_table ();

   return 0;
 }

 VLIB_API_INIT_FUNCTION (tapv2_api_hookup);

 /*
  * fd.io coding-style-patch-verification: ON
  *
  * Local Variables:
  * eval: (c-set-style "gnu")
  * End:
  */
	/*
	*------------------------------------------------------------------
	* tap_api.c - vnet tap device driver API support
	*
	* Copyright (c) 2017 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 <vlibmemory/api.h>

	#include <vnet/interface.h>
	#include <vnet/api_errno.h>
	#include <vnet/ethernet/ethernet.h>
	#include <vnet/ip/ip.h>
	#include <vnet/ethernet/ethernet_types_api.h>
	#include <vnet/ip/ip_types_api.h>
	#include <vnet/devices/tap/tap.h>

	#include <vnet/format_fns.h>
	#include <vnet/devices/tap/tapv2.api_enum.h>
	#include <vnet/devices/tap/tapv2.api_types.h>

	#define REPLY_MSG_ID_BASE tap_main.msg_id_base
	#include <vlibapi/api_helper_macros.h>

	static void
	vl_api_tap_create_v3_t_handler (vl_api_tap_create_v3_t *mp)
	{
	vl_api_registration_t *reg;
	int rv;

	reg = vl_api_client_index_to_registration (mp->client_index);
	if (!reg)
	return;

	vnet_main_t *vnm = vnet_get_main ();
	vlib_main_t *vm = vlib_get_main ();
	vl_api_tap_create_v3_reply_t *rmp;

	tap_create_if_args_t _a, *ap = &_a;

	clib_memset (ap, 0, sizeof (*ap));

	ap->id = mp->id;
	if (!mp->use_random_mac)
	{
	mac_address_decode (mp->mac_address, &ap->mac_addr);
	ap->mac_addr_set = 1;
	}
	ap->rx_ring_sz = mp->rx_ring_sz;
	ap->tx_ring_sz = mp->tx_ring_sz;
	ap->sw_if_index = (u32) ~0;
	ap->num_rx_queues = clib_max (1, mp->num_rx_queues);
	ap->num_tx_queues = mp->num_tx_queues;

	if (mp->host_if_name_set)
	ap->host_if_name = format (0, "%s%c", mp->host_if_name, 0);

	if (mp->host_mac_addr_set)
	{
	mac_address_decode (mp->host_mac_addr, &ap->host_mac_addr);
	}

	if (mp->host_namespace_set)
	ap->host_namespace = format (0, "%s%c", mp->host_namespace, 0);

	if (mp->host_bridge_set)
	ap->host_bridge = format (0, "%s%c", mp->host_bridge, 0);

	if (mp->host_ip4_prefix_set)
	{
	ip4_address_decode (mp->host_ip4_prefix.address, &ap->host_ip4_addr);
	ap->host_ip4_prefix_len = mp->host_ip4_prefix.len;
	}

	if (mp->host_ip6_prefix_set)
	{
	ip6_address_decode (mp->host_ip6_prefix.address, &ap->host_ip6_addr);
	ap->host_ip6_prefix_len = mp->host_ip6_prefix.len;
	}

	if (mp->host_ip4_gw_set)
	{
	ip4_address_decode (mp->host_ip4_gw, &ap->host_ip4_gw);
	ap->host_ip4_gw_set = 1;
	}

	if (mp->host_ip6_gw_set)
	{
	ip6_address_decode (mp->host_ip6_gw, &ap->host_ip6_gw);
	ap->host_ip6_gw_set = 1;
	}

	if (mp->host_mtu_set)
	{
	ap->host_mtu_size = mp->host_mtu_size;
	ap->host_mtu_set = 1;
	}

	ap->tap_flags = mp->tap_flags;

	tap_create_if (vm, ap);

	/* If a tag was supplied... */
	if (vl_api_string_len (&mp->tag))
	{
	u8 *tag = vl_api_from_api_to_new_vec (mp, &mp->tag);
	vnet_set_sw_interface_tag (vnm, tag, ap->sw_if_index);
	}

	vec_free (ap->host_if_name);
	vec_free (ap->host_namespace);
	vec_free (ap->host_bridge);

	rv = ap->rv;
	REPLY_MACRO2_END (VL_API_TAP_CREATE_V3_REPLY,
	({ rmp->sw_if_index = ap->sw_if_index; }));
	}

	static void
	vl_api_tap_create_v2_t_handler (vl_api_tap_create_v2_t * mp)
	{
	vl_api_registration_t *reg;
	reg = vl_api_client_index_to_registration (mp->client_index);
	if (!reg)
	return;

	vnet_main_t *vnm = vnet_get_main ();
	vlib_main_t *vm = vlib_get_main ();
	vl_api_tap_create_v2_reply_t *rmp;

	tap_create_if_args_t _a, *ap = &_a;

	clib_memset (ap, 0, sizeof (*ap));

	ap->id = ntohl (mp->id);
	if (!mp->use_random_mac)
	{
	mac_address_decode (mp->mac_address, &ap->mac_addr);
	ap->mac_addr_set = 1;
	}
	ap->rx_ring_sz = ntohs (mp->rx_ring_sz);
	ap->tx_ring_sz = ntohs (mp->tx_ring_sz);
	ap->sw_if_index = (u32) ~ 0;
	ap->num_rx_queues = 1;
	ap->num_tx_queues = 1;

	if (mp->num_rx_queues > 1)
	ap->num_rx_queues = mp->num_rx_queues;

	if (mp->host_if_name_set)
	ap->host_if_name = format (0, "%s%c", mp->host_if_name, 0);

	if (mp->host_mac_addr_set)
	{
	mac_address_decode (mp->host_mac_addr, &ap->host_mac_addr);
	}

	if (mp->host_namespace_set)
	ap->host_namespace = format (0, "%s%c", mp->host_namespace, 0);

	if (mp->host_bridge_set)
	ap->host_bridge = format (0, "%s%c", mp->host_bridge, 0);

	if (mp->host_ip4_prefix_set)
	{
	ip4_address_decode (mp->host_ip4_prefix.address, &ap->host_ip4_addr);
	ap->host_ip4_prefix_len = mp->host_ip4_prefix.len;
	}

	if (mp->host_ip6_prefix_set)
	{
	ip6_address_decode (mp->host_ip6_prefix.address, &ap->host_ip6_addr);
	ap->host_ip6_prefix_len = mp->host_ip6_prefix.len;
	}

	if (mp->host_ip4_gw_set)
	{
	ip4_address_decode (mp->host_ip4_gw, &ap->host_ip4_gw);
	ap->host_ip4_gw_set = 1;
	}

	if (mp->host_ip6_gw_set)
	{
	ip6_address_decode (mp->host_ip6_gw, &ap->host_ip6_gw);
	ap->host_ip6_gw_set = 1;
	}

	if (mp->host_mtu_set)
	{
	ap->host_mtu_size = ntohl (mp->host_mtu_size);
	ap->host_mtu_set = 1;
	}

	STATIC_ASSERT (((int) TAP_API_FLAG_GSO == (int) TAP_FLAG_GSO),
	"tap gso api flag mismatch");
	STATIC_ASSERT (((int) TAP_API_FLAG_CSUM_OFFLOAD ==
	(int) TAP_FLAG_CSUM_OFFLOAD),
	"tap checksum offload api flag mismatch");
	STATIC_ASSERT (((int) TAP_API_FLAG_PERSIST == (int) TAP_FLAG_PERSIST),
	"tap persist api flag mismatch");
	STATIC_ASSERT (((int) TAP_API_FLAG_ATTACH == (int) TAP_FLAG_ATTACH),
	"tap attach api flag mismatch");
	STATIC_ASSERT (((int) TAP_API_FLAG_TUN == (int) TAP_FLAG_TUN),
	"tap tun api flag mismatch");
	STATIC_ASSERT (((int) TAP_API_FLAG_GRO_COALESCE ==
	(int) TAP_FLAG_GRO_COALESCE),
	"tap gro coalesce api flag mismatch");
	STATIC_ASSERT (((int) TAP_API_FLAG_PACKED == (int) TAP_FLAG_PACKED),
	"tap packed api flag mismatch");
	STATIC_ASSERT (((int) TAP_API_FLAG_IN_ORDER ==
	(int) TAP_FLAG_IN_ORDER), "tap in-order api flag mismatch");

	ap->tap_flags = ntohl (mp->tap_flags);

	tap_create_if (vm, ap);


	/* If a tag was supplied... */
	if (vl_api_string_len (&mp->tag))
	{
	u8 *tag = vl_api_from_api_to_new_vec (mp, &mp->tag);
	vnet_set_sw_interface_tag (vnm, tag, ap->sw_if_index);
	}

	rmp = vl_msg_api_alloc (sizeof (*rmp));
	rmp->_vl_msg_id = ntohs (REPLY_MSG_ID_BASE + VL_API_TAP_CREATE_V2_REPLY);
	rmp->context = mp->context;
	rmp->retval = ntohl (ap->rv);
	rmp->sw_if_index = ntohl (ap->sw_if_index);

	vl_api_send_msg (reg, (u8 *) rmp);

	vec_free (ap->host_if_name);
	vec_free (ap->host_namespace);
	vec_free (ap->host_bridge);

	}

	static void
	vl_api_tap_delete_v2_t_handler (vl_api_tap_delete_v2_t * mp)
	{
	vl_api_registration_t *reg;
	reg = vl_api_client_index_to_registration (mp->client_index);
	if (!reg)
	return;

	vnet_main_t *vnm = vnet_get_main ();
	vlib_main_t *vm = vlib_get_main ();
	int rv;
	vl_api_tap_delete_v2_reply_t *rmp;

	u32 sw_if_index = ntohl (mp->sw_if_index);

	rv = tap_delete_if (vm, sw_if_index);

	rmp = vl_msg_api_alloc (sizeof (*rmp));
	rmp->_vl_msg_id = ntohs (REPLY_MSG_ID_BASE + VL_API_TAP_DELETE_V2_REPLY);
	rmp->context = mp->context;
	rmp->retval = ntohl (rv);

	vl_api_send_msg (reg, (u8 *) rmp);

	if (!rv)
	vnet_clear_sw_interface_tag (vnm, sw_if_index);
	}

	static void
	tap_send_sw_interface_details (vpe_api_main_t * am,
	vl_api_registration_t * reg,
	tap_interface_details_t * tap_if, u32 context)
	{
	vl_api_sw_interface_tap_v2_details_t *mp;
	mp = vl_msg_api_alloc (sizeof (*mp));
	clib_memset (mp, 0, sizeof (*mp));
	mp->_vl_msg_id =
	htons (REPLY_MSG_ID_BASE + VL_API_SW_INTERFACE_TAP_V2_DETAILS);
	mp->id = htonl (tap_if->id);
	mp->sw_if_index = htonl (tap_if->sw_if_index);
	mp->tap_flags = htonl (tap_if->tap_flags);
	clib_memcpy (mp->dev_name, tap_if->dev_name,
	MIN (ARRAY_LEN (mp->dev_name) - 1,
	strlen ((const char *) tap_if->dev_name)));
	mp->rx_ring_sz = htons (tap_if->rx_ring_sz);
	mp->tx_ring_sz = htons (tap_if->tx_ring_sz);
	mac_address_encode (&tap_if->host_mac_addr, mp->host_mac_addr);
	clib_memcpy (mp->host_if_name, tap_if->host_if_name,
	MIN (ARRAY_LEN (mp->host_if_name) - 1,
	strlen ((const char *) tap_if->host_if_name)));
	clib_memcpy (mp->host_namespace, tap_if->host_namespace,
	MIN (ARRAY_LEN (mp->host_namespace) - 1,
	strlen ((const char *) tap_if->host_namespace)));
	clib_memcpy (mp->host_bridge, tap_if->host_bridge,
	MIN (ARRAY_LEN (mp->host_bridge) - 1,
	strlen ((const char *) tap_if->host_bridge)));
	mp->host_mtu_size = htonl (tap_if->host_mtu_size);
	mac_address_encode (&tap_if->host_mac_addr, mp->host_mac_addr);

	if (tap_if->host_ip4_prefix_len)
	ip4_address_encode (&tap_if->host_ip4_addr, mp->host_ip4_prefix.address);
	mp->host_ip4_prefix.len = tap_if->host_ip4_prefix_len;
	if (tap_if->host_ip6_prefix_len)
	ip6_address_encode (&tap_if->host_ip6_addr, mp->host_ip6_prefix.address);
	mp->host_ip6_prefix.len = tap_if->host_ip6_prefix_len;

	mp->context = context;
	vl_api_send_msg (reg, (u8 *) mp);
	}

	static void
	vl_api_sw_interface_tap_v2_dump_t_handler (vl_api_sw_interface_tap_v2_dump_t *
	mp)
	{
	int rv;
	vpe_api_main_t *am = &vpe_api_main;
	vl_api_registration_t *reg;
	tap_interface_details_t *tapifs = NULL;
	tap_interface_details_t *tap_if = NULL;
	u32 filter_sw_if_index;

	reg = vl_api_client_index_to_registration (mp->client_index);
	if (!reg)
	return;

	filter_sw_if_index = htonl (mp->sw_if_index);
	if (mp->sw_if_index != ~0)
	VALIDATE_SW_IF_INDEX (mp);

	rv = tap_dump_ifs (&tapifs);
	if (rv)
	return;

	vec_foreach (tap_if, tapifs)
	{
	if ((filter_sw_if_index == ~0)
	\|\| (tap_if->sw_if_index == filter_sw_if_index))
	tap_send_sw_interface_details (am, reg, tap_if, mp->context);
	}
	BAD_SW_IF_INDEX_LABEL;
	vec_free (tapifs);
	}

	#include <vnet/devices/tap/tapv2.api.c>
	static clib_error_t *
	tapv2_api_hookup (vlib_main_t * vm)
	{
	/*
	* Set up the (msg_name, crc, message-id) table
	*/
	REPLY_MSG_ID_BASE = setup_message_id_table ();

	return 0;
	}

	VLIB_API_INIT_FUNCTION (tapv2_api_hookup);

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