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/*
* Copyright (c) 2016 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.
*/
/**
* @brief
* The data-path object representing dropping the packet
*/
#include <vnet/dpo/dpo.h>
static dpo_id_t drop_dpos[DPO_PROTO_NUM];
const dpo_id_t *
drop_dpo_get (dpo_proto_t proto)
{
dpo_set(&drop_dpos[proto], DPO_DROP, proto, proto);
return (&drop_dpos[proto]);
}
int
dpo_is_drop (const dpo_id_t *dpo)
{
return (dpo->dpoi_type == DPO_DROP);
}
static void
drop_dpo_lock (dpo_id_t *dpo)
{
/*
* not maintaining a lock count on the drop
* more trouble than it's worth.
* There always needs to be one around. no point it managaing its lifetime
*/
}
static void
drop_dpo_unlock (dpo_id_t *dpo)
{
}
static u8*
format_drop_dpo (u8 *s, va_list *ap)
{
CLIB_UNUSED(index_t index) = va_arg(*ap, index_t);
CLIB_UNUSED(u32 indent) = va_arg(*ap, u32);
return (format(s, "dpo-drop %U", format_dpo_proto, index));
}
const static dpo_vft_t drop_vft = {
.dv_lock = drop_dpo_lock,
.dv_unlock = drop_dpo_unlock,
.dv_format = format_drop_dpo,
};
/**
* @brief The per-protocol VLIB graph nodes that are assigned to a drop
* object.
*
* this means that these graph nodes are ones from which a drop is the
* parent object in the DPO-graph.
*/
const static char* const drop_ip4_nodes[] =
{
"ip4-drop",
NULL,
};
const static char* const drop_ip6_nodes[] =
{
"ip6-drop",
NULL,
};
const static char* const drop_mpls_nodes[] =
{
"mpls-drop",
NULL,
};
const static char* const drop_ethernet_nodes[] =
{
"error-drop",
NULL,
};
const static char* const * const drop_nodes[DPO_PROTO_NUM] =
{
[DPO_PROTO_IP4] = drop_ip4_nodes,
[DPO_PROTO_IP6] = drop_ip6_nodes,
[DPO_PROTO_MPLS] = drop_mpls_nodes,
[DPO_PROTO_ETHERNET] = drop_ethernet_nodes,
};
void
drop_dpo_module_init (void)
{
dpo_register(DPO_DROP, &drop_vft, drop_nodes);
}
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