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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 <vnet/ip/ip.h>
#include <vnet/plugin/plugin.h>
#include <vnet/ip/udp.h>
#include <ioam/ipfixcollector/ipfixcollector.h>
ipfix_collector_main_t ipfix_collector_main;
/**
* @brief IP-FIX SetID registration function.
*
* This function can be used by other VPP graph nodes to receive IP-FIX packets
* with a particular setid.
*
* @param vlib_main_t Vlib main of the graph node which is interseted in
* getting IP-Fix packet.
* @param ipfix_client_add_del_t Structure describing the client node which
* is interested in getting the IP-Fix packets for
* a SetID.
*
* @returns 0 on success.
* @returns Error codes(<0) otherwise.
*/
int
ipfix_collector_reg_setid (vlib_main_t * vm, ipfix_client_add_del_t * info)
{
ipfix_collector_main_t *cm = &ipfix_collector_main;
uword *p = NULL;
int i;
ipfix_client *client = 0;
if ((!info) || (!info->client_name))
return IPFIX_COLLECTOR_ERR_INVALID_PARAM;
p = hash_get (cm->client_reg_table, info->ipfix_setid);
client = p ? pool_elt_at_index (cm->client_reg_pool, (*p)) : NULL;
if (info->del)
{
if (!client)
return 0; //There is no registered handler, so send success
hash_unset (cm->client_reg_table, info->ipfix_setid);
vec_free (client->client_name);
pool_put (cm->client_reg_pool, client);
return 0;
}
if (client)
return IPFIX_COLLECTOR_ERR_REG_EXISTS;
pool_get (cm->client_reg_pool, client);
i = client - cm->client_reg_pool;
client->client_name = vec_dup (info->client_name);
client->client_node = info->client_node;
client->client_next_node = vlib_node_add_next (vm,
ipfix_collector_node.index,
client->client_node);
client->set_id = info->ipfix_setid;
hash_set (cm->client_reg_table, info->ipfix_setid, i);
return 0;
}
static clib_error_t *
ipfix_collector_init (vlib_main_t * vm)
{
clib_error_t *error = 0;
ipfix_collector_main_t *cm = &ipfix_collector_main;
cm->vlib_main = vm;
cm->vnet_main = vnet_get_main ();
cm->client_reg_pool = NULL;
cm->client_reg_table = hash_create (0, sizeof (uword));
udp_register_dst_port (vm,
UDP_DST_PORT_ipfix,
ipfix_collector_node.index, 1 /* is_ip4 */ );
return error;
}
VLIB_INIT_FUNCTION (ipfix_collector_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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