/*
* Copyright (c) 2015 Jiri Svoboda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup udp
* @{
*/
/**
* @file UDP client associations
*
* Ties UDP associations into the namespace of a client
*/
#include <errno.h>
#include <inet/endpoint.h>
#include <io/log.h>
#include <stdlib.h>
#include "cassoc.h"
#include "udp_type.h"
/** Add message to client receive queue.
*
* @param cassoc Client association
* @param epp Endpoint pair on which message was received
* @param msg Message
*
* @return EOK on success, ENOMEM if out of memory
*/
errno_t udp_cassoc_queue_msg(udp_cassoc_t *cassoc, inet_ep2_t *epp,
udp_msg_t *msg)
{
udp_crcv_queue_entry_t *rqe;
log_msg(LOG_DEFAULT, LVL_DEBUG, "udp_cassoc_queue_msg(%p, %p, %p)",
cassoc, epp, msg);
rqe = calloc(1, sizeof(udp_crcv_queue_entry_t));
if (rqe == NULL)
return ENOMEM;
link_initialize(&rqe->link);
rqe->epp = *epp;
rqe->msg = msg;
rqe->cassoc = cassoc;
list_append(&rqe->link, &cassoc->client->crcv_queue);
return EOK;
}
/** Create client association.
*
* This effectively adds an association into a client's namespace.
*
* @param client Client
* @param assoc Association
* @param rcassoc Place to store pointer to new client association
*
* @return EOK on soccess, ENOMEM if out of memory
*/
errno_t udp_cassoc_create(udp_client_t *client, udp_assoc_t *assoc,
udp_cassoc_t **rcassoc)
{
udp_cassoc_t *cassoc;
sysarg_t id;
cassoc = calloc(1, sizeof(udp_cassoc_t));
if (cassoc == NULL)
return ENOMEM;
/* Allocate new ID */
id = 0;
list_foreach (client->cassoc, lclient, udp_cassoc_t, cassoc) {
if (cassoc->id >= id)
id = cassoc->id + 1;
}
cassoc->id = id;
cassoc->client = client;
cassoc->assoc = assoc;
list_append(&cassoc->lclient, &client->cassoc);
*rcassoc = cassoc;
return EOK;
}
/** Destroy client association.
*
* @param cassoc Client association
*/
void udp_cassoc_destroy(udp_cassoc_t *cassoc)
{
list_remove(&cassoc->lclient);
free(cassoc);
}
/** Get client association by ID.
*
* @param client Client
* @param id Client association ID
* @param rcassoc Place to store pointer to client association
*
* @return EOK on success, ENOENT if no client association with the given ID
* is found.
*/
errno_t udp_cassoc_get(udp_client_t *client, sysarg_t id,
udp_cassoc_t **rcassoc)
{
list_foreach (client->cassoc, lclient, udp_cassoc_t, cassoc) {
if (cassoc->id == id) {
*rcassoc = cassoc;
return EOK;
}
}
return ENOENT;
}
/**
* @}
*/