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/*
*------------------------------------------------------------------
* 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/vnet_msg_enum.h>
#define vl_typedefs /* define message structures */
#include <vnet/vnet_all_api_h.h>
#undef vl_typedefs
#define vl_endianfun /* define message structures */
#include <vnet/vnet_all_api_h.h>
#undef vl_endianfun
/* instantiate all the print functions we know about */
#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
#define vl_printfun
#include <vnet/vnet_all_api_h.h>
#undef vl_printfun
#include <vlibapi/api_helper_macros.h>
#include <vnet/devices/tap/tap.h>
#define foreach_tapv2_api_msg \
_(TAP_CREATE_V2, tap_create_v2) \
_(TAP_DELETE_V2, tap_delete_v2) \
_(SW_INTERFACE_TAP_V2_DUMP, sw_interface_tap_v2_dump)
static void
vl_api_tap_create_v2_t_handler (vl_api_tap_create_v2_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
vl_api_tap_create_v2_reply_t *rmp;
unix_shared_memory_queue_t *q;
tap_create_if_args_t _a, *ap = &_a;
memset (ap, 0, sizeof (*ap));
ap->name = mp->tap_name;
if (!mp->use_random_mac)
{
clib_memcpy (ap->hw_addr, mp->mac_address, 6);
ap->hw_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;
if (mp->host_namespace_set)
ap->host_namespace = mp->host_namespace;
if (mp->host_bridge_set)
ap->host_bridge = mp->host_bridge;
if (mp->host_ip4_addr_set)
{
clib_memcpy (&ap->host_ip4_addr.as_u8, mp->host_ip4_addr, 4);
ap->host_ip4_prefix_len = mp->host_ip4_prefix_len;
}
if (mp->host_ip6_addr_set)
{
clib_memcpy (&ap->host_ip6_addr, mp->host_ip6_addr, 16);
ap->host_ip6_prefix_len = mp->host_ip6_prefix_len;
}
tap_create_if (vm, ap);
q = vl_api_client_index_to_input_queue (mp->client_index);
if (!q)
return;
rmp = vl_msg_api_alloc (sizeof (*rmp));
rmp->_vl_msg_id = ntohs (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_msg_api_send_shmem (q, (u8 *) & rmp);
}
static void
tap_send_sw_interface_event_deleted (vpe_api_main_t * am,
unix_shared_memory_queue_t * q,
u32 sw_if_index)
{
vl_api_sw_interface_event_t *mp;
mp = vl_msg_api_alloc (sizeof (*mp));
memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_EVENT);
mp->sw_if_index = ntohl (sw_if_index);
mp->admin_up_down = 0;
mp->link_up_down = 0;
mp->deleted = 1;
vl_msg_api_send_shmem (q, (u8 *) & mp);
}
static void
vl_api_tap_delete_v2_t_handler (vl_api_tap_delete_v2_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
int rv;
vpe_api_main_t *vam = &vpe_api_main;
vl_api_tap_delete_v2_reply_t *rmp;
unix_shared_memory_queue_t *q;
u32 sw_if_index = ntohl (mp->sw_if_index);
rv = tap_delete_if (vm, sw_if_index);
q = vl_api_client_index_to_input_queue (mp->client_index);
if (!q)
return;
rmp = vl_msg_api_alloc (sizeof (*rmp));
rmp->_vl_msg_id = ntohs (VL_API_TAP_DELETE_V2_REPLY);
rmp->context = mp->context;
rmp->retval = ntohl (rv);
vl_msg_api_send_shmem (q, (u8 *) & rmp);
if (!rv)
tap_send_sw_interface_event_deleted (vam, q, sw_if_index);
}
static void
tap_send_sw_interface_details (vpe_api_main_t * am,
unix_shared_memory_queue_t * q,
tap_interface_details_t * tap_if, u32 context)
{
vl_api_sw_interface_tap_v2_details_t *mp;
mp = vl_msg_api_alloc (sizeof (*mp));
memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_TAP_V2_DETAILS);
mp->sw_if_index = ntohl (tap_if->sw_if_index);
clib_memcpy (mp->dev_name, tap_if->dev_name,
MIN (ARRAY_LEN (mp->dev_name) - 1,
strlen ((const char *) tap_if->dev_name)));
mp->context = context;
vl_msg_api_send_shmem (q, (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;
unix_shared_memory_queue_t *q;
tap_interface_details_t *tapifs = NULL;
tap_interface_details_t *tap_if = NULL;
q = vl_api_client_index_to_input_queue (mp->client_index);
if (q == 0)
return;
rv = tap_dump_ifs (&tapifs);
if (rv)
return;
vec_foreach (tap_if, tapifs)
{
tap_send_sw_interface_details (am, q, tap_if, mp->context);
}
vec_free (tapifs);
}
#define vl_msg_name_crc_list
#include <vnet/vnet_all_api_h.h>
#undef vl_msg_name_crc_list
static void
tap_setup_message_id_table (api_main_t * am)
{
#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
foreach_vl_msg_name_crc_tapv2;
#undef _
}
static clib_error_t *
tapv2_api_hookup (vlib_main_t * vm)
{
api_main_t *am = &api_main;
#define _(N,n) \
vl_msg_api_set_handlers(VL_API_##N, #n, \
vl_api_##n##_t_handler, \
vl_noop_handler, \
vl_api_##n##_t_endian, \
vl_api_##n##_t_print, \
sizeof(vl_api_##n##_t), 1);
foreach_tapv2_api_msg;
#undef _
/*
* Set up the (msg_name, crc, message-id) table
*/
tap_setup_message_id_table (am);
return 0;
}
VLIB_API_INIT_FUNCTION (tapv2_api_hookup);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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