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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_ssm_range.h>
typedef struct igmp_group_prefix_t
{
fib_prefix_t igp_prefix;
igmp_group_prefix_type_t igp_type;
} igmp_group_prefix_t;
static igmp_group_prefix_t *igmp_group_prefixs;
u8 *
format_igmp_group_prefix_type (u8 * s, va_list * args)
{
igmp_group_prefix_type_t type = va_arg (*args, int);
switch (type)
{
#define _(n,f) case IGMP_GROUP_PREFIX_TYPE_##f: return (format (s, "%s", #f));
foreach_igmp_group_prefix_type
#undef _
}
return format (s, "unknown:%d", type);
}
static int
igmp_group_prefix_cmp (const igmp_group_prefix_t * gp1,
const fib_prefix_t * p)
{
return (fib_prefix_cmp (&gp1->igp_prefix, p));
}
void
igmp_group_prefix_set (const fib_prefix_t * pfx,
igmp_group_prefix_type_t type)
{
u32 pos;
pos =
vec_search_with_function (igmp_group_prefixs, pfx, igmp_group_prefix_cmp);
if ((~0 == pos) && (IGMP_GROUP_PREFIX_TYPE_SSM == type))
{
igmp_group_prefix_t gp = {
.igp_prefix = *pfx,
.igp_type = type,
};
vec_add1 (igmp_group_prefixs, gp);
}
if ((~0 != pos) && (IGMP_GROUP_PREFIX_TYPE_ASM == type))
{
vec_del1 (igmp_group_prefixs, pos);
}
}
static void
igmp_ssm_range_populate (void)
{
igmp_group_prefix_t *ssm_default;
vec_add2 (igmp_group_prefixs, ssm_default, 1);
ssm_default->igp_prefix.fp_addr.ip4.as_u32 = IGMP_SSM_DEFAULT;
ssm_default->igp_prefix.fp_proto = FIB_PROTOCOL_IP4;
ssm_default->igp_prefix.fp_len = 8;
ssm_default->igp_type = IGMP_GROUP_PREFIX_TYPE_SSM;
}
igmp_group_prefix_type_t
igmp_group_prefix_get_type (const ip46_address_t * gaddr)
{
igmp_group_prefix_t *igp;
vec_foreach (igp, igmp_group_prefixs)
{
if (ip4_destination_matches_route (&ip4_main,
&gaddr->ip4,
&igp->igp_prefix.fp_addr.ip4,
igp->igp_prefix.fp_len))
return (IGMP_GROUP_PREFIX_TYPE_SSM);
}
return (IGMP_GROUP_PREFIX_TYPE_ASM);
}
void
igmp_ssm_range_walk (igmp_ssm_range_walk_t fn, void *ctx)
{
igmp_group_prefix_t *igp;
vec_foreach (igp, igmp_group_prefixs)
{
if (WALK_STOP == fn (&igp->igp_prefix, igp->igp_type, ctx))
break;
}
}
static clib_error_t *
igmp_ssm_range_show (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
igmp_group_prefix_t *igp;
vec_foreach (igp, igmp_group_prefixs)
{
vlib_cli_output (vm, "%U => %U",
format_fib_prefix, &igp->igp_prefix,
format_igmp_group_prefix_type, igp->igp_type);
}
return (NULL);
}
VLIB_CLI_COMMAND (igmp_show_timers_command, static) = {
.path = "show igmp ssm-ranges",
.short_help = "show igmp ssm-ranges",
.function = igmp_ssm_range_show,
};
static clib_error_t *
igmp_ssm_range_init (vlib_main_t * vm)
{
igmp_ssm_range_populate ();
IGMP_DBG ("ssm-range-initialized");
return (0);
}
VLIB_INIT_FUNCTION (igmp_ssm_range_init) =
{
.runs_after = VLIB_INITS("igmp_init"),
};
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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