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/*
* Ouroboros - Copyright (C) 2016 - 2026
*
* Points of attachment (PoA) - addresses and management messages
*
* Dimitri Staessens <dimitri@ouroboros.rocks>
* Sander Vrijders <sander@ouroboros.rocks>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., http://www.fsf.org/about/contact/.
*/
#if defined(__linux__) || defined(__CYGWIN__)
#ifndef _DEFAULT_SOURCE /* Test include source */
#define _DEFAULT_SOURCE
#endif
#endif
#include "config.h"
#include <ouroboros/endian.h>
#include <ouroboros/errno.h>
#include "poa.h"
#include <arpa/inet.h>
#include <stdio.h>
#include <string.h>
int poa_addr_cmp(const struct poa_addr * a,
const struct poa_addr * b)
{
if (a->type != b->type)
return 1;
switch (a->type) {
case POA_UDP4:
if (a->udp4.port != b->udp4.port)
return 1;
return memcmp(&a->udp4.ip_addr, &b->udp4.ip_addr,
sizeof(a->udp4.ip_addr));
case POA_UDP6:
if (a->udp6.port != b->udp6.port)
return 1;
return memcmp(&a->udp6.ip_addr, &b->udp6.ip_addr,
sizeof(a->udp6.ip_addr));
case POA_ETH:
if (a->eth.dst.ethertype != b->eth.dst.ethertype)
return 1;
return memcmp(a->eth.dst.mac, b->eth.dst.mac, POA_MAC_SIZE);
default:
return 1;
}
}
/* Display/RIB entry name, e.g. "udp4.<ip>.<port>". */
int poa_addr_name(const struct poa_addr * a,
char * buf,
size_t len)
{
char ip[INET6_ADDRSTRLEN];
int ret;
switch (a->type) {
case POA_UDP4:
if (inet_ntop(AF_INET, &a->udp4.ip_addr,
ip, sizeof(ip)) == NULL)
return -EINVAL;
ret = snprintf(buf, len, "udp4.%s.%u", ip, a->udp4.port);
break;
case POA_UDP6:
if (inet_ntop(AF_INET6, &a->udp6.ip_addr,
ip, sizeof(ip)) == NULL)
return -EINVAL;
ret = snprintf(buf, len, "udp6.%s.%u", ip, a->udp6.port);
break;
case POA_ETH:
ret = snprintf(buf, len, "eth.%s.%04X",
a->eth.src.dev, a->eth.src.ethertype);
break;
default:
return -EINVAL;
}
if (ret < 0 || (size_t) ret >= len)
return -EMSGSIZE;
return 0;
}
void poa_mgmt_msg_ser(struct poa_mgmt_msg * msg,
uint8_t code,
uint32_t s_eid,
uint32_t d_eid,
qosspec_t qs,
int response,
size_t data_len)
{
memset(msg, 0, sizeof(*msg));
msg->code = code;
msg->s_eid = hton32(s_eid);
msg->d_eid = hton32(d_eid);
msg->response = hton32(response);
msg->data_len = hton16((uint16_t) data_len);
if (code != POA_FLOW_REQ)
return;
msg->bandwidth = hton64(qs.bandwidth);
msg->delay = hton32(qs.delay);
msg->loss = hton32(qs.loss);
msg->ber = hton32(qs.ber);
msg->max_gap = hton32(qs.max_gap);
msg->timeout = hton32(qs.timeout);
msg->availability = qs.availability;
msg->service = qs.service;
}
void poa_mgmt_msg_qos(const struct poa_mgmt_msg * msg,
qosspec_t * qs)
{
qs->bandwidth = ntoh64(msg->bandwidth);
qs->delay = ntoh32(msg->delay);
qs->loss = ntoh32(msg->loss);
qs->ber = ntoh32(msg->ber);
qs->max_gap = ntoh32(msg->max_gap);
qs->timeout = ntoh32(msg->timeout);
qs->availability = msg->availability;
qs->service = msg->service;
}
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