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/*
*------------------------------------------------------------------
* 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 <igmp/igmp_src.h>
#include <igmp/igmp_group.h>
#include <igmp/igmp.h>
void
igmp_src_free (igmp_src_t * src)
{
igmp_main_t *im = &igmp_main;
IGMP_DBG ("free-src: (%U)", format_igmp_key, src->key);
igmp_timer_retire (&src->timers[IGMP_SRC_TIMER_EXP]);
clib_mem_free (src->key);
pool_put (im->srcs, src);
}
static void
igmp_src_exp (u32 obj, void *dat)
{
igmp_group_t *group;
igmp_src_t *src;
src = pool_elt_at_index (igmp_main.srcs, obj);
group = igmp_group_get (src->group);
IGMP_DBG ("src-exp: %U", format_igmp_key, src->key);
igmp_timer_retire (&src->timers[IGMP_SRC_TIMER_EXP]);
if (IGMP_MODE_ROUTER == src->mode)
{
igmp_config_t *config;
igmp_group_t *group;
/*
* inform interest parties
*/
group = igmp_group_get (src->group);
config = igmp_config_get (group->config);
igmp_event (IGMP_FILTER_MODE_EXCLUDE,
config->sw_if_index, src->key, group->key);
igmp_proxy_device_block_src (config, group, src);
}
igmp_group_src_remove (group, src);
igmp_src_free (src);
if (0 == igmp_group_n_srcs (group, IGMP_FILTER_MODE_INCLUDE))
igmp_group_clear (group);
}
igmp_src_t *
igmp_src_alloc (u32 group_index, const igmp_key_t * skey, igmp_mode_t mode)
{
igmp_main_t *im = &igmp_main;
igmp_src_t *src;
IGMP_DBG ("new-src: (%U)", format_igmp_key, skey);
pool_get (im->srcs, src);
clib_memset (src, 0, sizeof (igmp_src_t));
src->mode = mode;
src->key = clib_mem_alloc (sizeof (*skey));
src->group = group_index;
clib_memcpy (src->key, skey, sizeof (*skey));
if (IGMP_MODE_ROUTER == mode)
{
igmp_config_t *config;
igmp_group_t *group;
/*
* start a timer that determines whether the source is still
* active on the link
*/
src->timers[IGMP_SRC_TIMER_EXP] =
igmp_timer_schedule (igmp_timer_type_get (IGMP_TIMER_SRC),
src - im->srcs, igmp_src_exp, NULL);
/*
* inform interest parties
*/
group = igmp_group_get (src->group);
config = igmp_config_get (group->config);
igmp_event (IGMP_FILTER_MODE_INCLUDE,
config->sw_if_index, src->key, group->key);
}
else
{
src->timers[IGMP_SRC_TIMER_EXP] = IGMP_TIMER_ID_INVALID;
}
return (src);
}
void
igmp_src_refresh (igmp_src_t * src)
{
IGMP_DBG ("refresh-src: (%U)", format_igmp_key, src->key);
igmp_timer_retire (&src->timers[IGMP_SRC_TIMER_EXP]);
src->timers[IGMP_SRC_TIMER_EXP] =
igmp_timer_schedule (igmp_timer_type_get (IGMP_TIMER_SRC),
igmp_src_index (src), igmp_src_exp, NULL);
}
void
igmp_src_blocked (igmp_src_t * src)
{
IGMP_DBG ("block-src: (%U)", format_igmp_key, src->key);
igmp_timer_retire (&src->timers[IGMP_SRC_TIMER_EXP]);
src->timers[IGMP_SRC_TIMER_EXP] =
igmp_timer_schedule (igmp_timer_type_get (IGMP_TIMER_LEAVE),
igmp_src_index (src), igmp_src_exp, NULL);
}
u32
igmp_src_index (igmp_src_t * src)
{
return (src - igmp_main.srcs);
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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