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/*
* ustp - OpenWrt STP/RSTP/MSTP daemon
* Copyright (C) 2021 Felix Fietkau <nbd@nbd.name>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program 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 General Public License for more details.
*/
#include <string.h>
#include <libubox/avl-cmp.h>
#include <libubox/utils.h>
#include "config.h"
AVL_TREE(bridge_config, avl_strcmp, false, NULL);
static uint32_t bridge_config_timestamp(void)
{
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return ts.tv_sec;
}
struct bridge_config *
bridge_config_get(const char *name, bool create)
{
struct bridge_config *cfg;
char *name_buf;
cfg = avl_find_element(&bridge_config, name, cfg, node);
if (cfg)
goto out;
if (!create)
return NULL;
cfg = calloc_a(sizeof(*cfg), &name_buf, strlen(name) + 1);
cfg->node.key = strcpy(name_buf, name);
avl_insert(&bridge_config, &cfg->node);
out:
cfg->timestamp = bridge_config_timestamp();
return cfg;
}
void bridge_config_expire(void)
{
struct bridge_config *cfg, *tmp;
uint32_t ts;
ts = bridge_config_timestamp();
avl_for_each_element_safe(&bridge_config, cfg, node, tmp) {
if (ts - cfg->timestamp < 60)
continue;
avl_delete(&bridge_config, &cfg->node);
free(cfg);
}
}
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