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/*
*------------------------------------------------------------------
* 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 <igmp/igmp.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
/* define message IDs */
#include <igmp/igmp_msg_enum.h>
/* define message structures */
#define vl_typedefs
#include <igmp/igmp_all_api_h.h>
#undef vl_typedefs
/* define generated endian-swappers */
#define vl_endianfun
#include <igmp/igmp_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 <igmp/igmp_all_api_h.h>
#undef vl_printfun
/* Get the API version number */
#define vl_api_version(n,v) static u32 api_version=(v);
#include <igmp/igmp_all_api_h.h>
#undef vl_api_version
#include <vlibapi/api_helper_macros.h>
#define foreach_igmp_plugin_api_msg \
_(IGMP_LISTEN, igmp_listen) \
_(IGMP_ENABLE_DISABLE, igmp_enable_disable) \
_(IGMP_DUMP, igmp_dump) \
_(IGMP_CLEAR_INTERFACE, igmp_clear_interface) \
_(WANT_IGMP_EVENTS, want_igmp_events) \
static void
vl_api_igmp_listen_t_handler (vl_api_igmp_listen_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
vnet_main_t *vnm = vnet_get_main ();
igmp_main_t *im = &igmp_main;
vl_api_igmp_listen_reply_t *rmp;
int rv = 0;
ip46_address_t saddr, gaddr;
if (!vnet_sw_interface_is_api_valid (vnm, ntohl (mp->sw_if_index)))
{
rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
goto done;
}
if ((vnet_sw_interface_get_flags (vnm, ntohl (mp->sw_if_index)) &&
VNET_SW_INTERFACE_FLAG_ADMIN_UP) == 0)
{
rv = VNET_API_ERROR_UNEXPECTED_INTF_STATE;
goto done;
}
clib_memcpy (&saddr.ip4.as_u8, mp->saddr, sizeof (u8) * 4);
clib_memcpy (&gaddr.ip4.as_u8, mp->gaddr, sizeof (u8) * 4);
rv = igmp_listen (vm, mp->enable, ntohl (mp->sw_if_index), saddr, gaddr, 1);
done:;
unix_shared_memory_queue_t *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 = htons ((VL_API_IGMP_LISTEN_REPLY) + im->msg_id_base);
rmp->context = mp->context;
rmp->retval = htonl (rv);
vl_msg_api_send_shmem (q, (u8 *) & rmp);
}
static void
vl_api_igmp_enable_disable_t_handler (vl_api_igmp_enable_disable_t * mp)
{
vl_api_igmp_enable_disable_reply_t *rmp;
igmp_main_t *im = &igmp_main;
int rv = 0;
REPLY_MACRO (VL_API_IGMP_ENABLE_DISABLE_REPLY + im->msg_id_base);
}
static void
send_igmp_details (unix_shared_memory_queue_t * q, igmp_main_t * im,
igmp_config_t * config, igmp_sg_t * sg, u32 context)
{
vl_api_igmp_details_t *mp;
mp = vl_msg_api_alloc (sizeof (*mp));
memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = htons (VL_API_IGMP_DETAILS + im->msg_id_base);
mp->context = context;
mp->sw_if_index = htonl (config->sw_if_index);
clib_memcpy (mp->saddr, &sg->saddr.ip4, sizeof (u8) * 4);
clib_memcpy (mp->gaddr, &sg->gaddr.ip4, sizeof (u8) * 4);
vl_msg_api_send_shmem (q, (u8 *) & mp);
}
static void
vl_api_igmp_dump_t_handler (vl_api_igmp_dump_t * mp)
{
igmp_main_t *im = &igmp_main;
igmp_config_t *config;
igmp_sg_t *sg;
unix_shared_memory_queue_t *q =
vl_api_client_index_to_input_queue (mp->client_index);
if (!q)
return;
if (mp->dump_all)
{
/* *INDENT-OFF* */
pool_foreach (config, im->configs, (
{
pool_foreach (sg, config->sg, (
{
send_igmp_details (q, im, config, sg, mp->context);
}));
}));
/* *INDENT-ON* */
return;
}
config = igmp_config_lookup (im, ntohl (mp->sw_if_index));
if (config)
{
/* *INDENT-OFF* */
pool_foreach (sg, config->sg, (
{
send_igmp_details (q, im, config, sg, mp->context);
}));
/* *INDENT-ON* */
}
}
static void
vl_api_igmp_clear_interface_t_handler (vl_api_igmp_clear_interface_t * mp)
{
igmp_main_t *im = &igmp_main;
igmp_config_t *config;
vl_api_igmp_clear_interface_reply_t *rmp;
int rv = 0;
config = igmp_config_lookup (im, ntohl (mp->sw_if_index));
if (config)
igmp_clear_config (config);
unix_shared_memory_queue_t *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 =
htons ((VL_API_IGMP_CLEAR_INTERFACE_REPLY) + im->msg_id_base);
rmp->context = mp->context;
rmp->retval = htonl (rv);
vl_msg_api_send_shmem (q, (u8 *) & rmp);
}
static void
vl_api_want_igmp_events_t_handler (vl_api_want_igmp_events_t * mp)
{
igmp_main_t *im = &igmp_main;
igmp_api_client_t *api_client;
vl_api_want_igmp_events_reply_t *rmp;
int rv = 0;
api_client = igmp_api_client_lookup (im, mp->client_index);
if (api_client)
{
if (mp->enable)
{
rv = VNET_API_ERROR_INVALID_REGISTRATION;
goto done;
}
hash_unset_mem (im->igmp_api_client_by_client_index,
&api_client->client_index);
pool_put (im->api_clients, api_client);
goto done;
}
if (mp->enable)
{
pool_get (im->api_clients, api_client);
memset (api_client, 0, sizeof (igmp_api_client_t));
api_client->client_index = mp->client_index;
api_client->pid = mp->pid;
hash_set_mem (im->igmp_api_client_by_client_index,
&mp->client_index, api_client - im->api_clients);
goto done;
}
rv = VNET_API_ERROR_INVALID_REGISTRATION;
done:;
unix_shared_memory_queue_t *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 = htons ((VL_API_WANT_IGMP_EVENTS_REPLY) + im->msg_id_base);
rmp->context = mp->context;
rmp->retval = htonl (rv);
vl_msg_api_send_shmem (q, (u8 *) & rmp);
}
void
send_igmp_event (unix_shared_memory_queue_t * q, u32 context,
igmp_main_t * im, igmp_config_t * config, igmp_sg_t * sg)
{
vl_api_igmp_event_t *mp = vl_msg_api_alloc (sizeof (*mp));
memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = ntohs ((VL_API_IGMP_EVENT) + im->msg_id_base);
mp->context = context;
mp->sw_if_index = htonl (config->sw_if_index);
clib_memcpy (&mp->saddr, &sg->saddr.ip4, sizeof (ip4_address_t));
clib_memcpy (&mp->gaddr, &sg->gaddr.ip4, sizeof (ip4_address_t));
mp->is_join =
(sg->group_type == IGMP_MEMBERSHIP_GROUP_mode_is_filter_include) ? 1 : 0;
vl_msg_api_send_shmem (q, (u8 *) & mp);
}
void
igmp_event (igmp_main_t * im, igmp_config_t * config, igmp_sg_t * sg)
{
igmp_api_client_t *api_client;
unix_shared_memory_queue_t *q;
/* *INDENT-OFF* */
pool_foreach (api_client, im->api_clients,
({
q = vl_api_client_index_to_input_queue (api_client->client_index);
if (q)
send_igmp_event (q, 0, im, config, sg);
}));
/* *INDENT-ON* */
if (sg->group_type == IGMP_MEMBERSHIP_GROUP_block_old_sources)
{
hash_unset_mem (config->igmp_sg_by_key, sg->key);
clib_mem_free (sg->key);
pool_put (config->sg, sg);
if (pool_elts (config->sg) == 0)
{
hash_unset_mem (im->igmp_config_by_sw_if_index,
&config->sw_if_index);
pool_put (im->configs, config);
}
}
}
#define vl_msg_name_crc_list
#include <igmp/igmp_all_api_h.h>
#undef vl_msg_name_crc_list
static void
setup_message_id_table (igmp_main_t * im, api_main_t * am)
{
#define _(id,n,crc) \
vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + im->msg_id_base);
foreach_vl_msg_name_crc_igmp;
#undef _
}
/* Set up the API message handling tables */
static clib_error_t *
igmp_plugin_api_hookup (vlib_main_t * vm)
{
igmp_main_t *im = &igmp_main;
api_main_t *am = &api_main;
u8 *name;
/* Construct the API name */
name = format (0, "igmp_%08x%c", api_version, 0);
/* Ask for a correctly-sized block of API message decode slots */
im->msg_id_base = vl_msg_api_get_msg_ids
((char *) name, VL_MSG_FIRST_AVAILABLE);
#define _(N,n) \
vl_msg_api_set_handlers((VL_API_##N + im->msg_id_base), \
#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_igmp_plugin_api_msg;
#undef _
/*
* Set up the (msg_name, crc, message-id) table
*/
setup_message_id_table (im, am);
vec_free (name);
return 0;
}
VLIB_API_INIT_FUNCTION (igmp_plugin_api_hookup);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
