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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) 2020 embedd.ch
* Copyright (C) 2020 Felix Fietkau <nbd@nbd.name>
* Copyright (C) 2020 John Crispin <john@phrozen.org>
*/
#include <unistd.h>
#include <stdarg.h>
#include <syslog.h>
#include <libubox/blobmsg_json.h>
#include "usteer.h"
#include "event.h"
#include "node.h"
struct ubus_context *ubus_ctx;
struct usteer_config config = {};
struct blob_attr *host_info_blob;
uint64_t current_time;
static int dump_time;
LIST_HEAD(node_handlers);
const char * const event_types[__EVENT_TYPE_MAX] = {
[EVENT_TYPE_PROBE] = "probe",
[EVENT_TYPE_AUTH] = "auth",
[EVENT_TYPE_ASSOC] = "assoc",
};
void log_msg(char *msg)
{
if (config.syslog)
syslog(LOG_INFO, "%s\n", msg);
else
fprintf(stderr, "%s\n", msg);
}
void debug_msg(int level, const char *func, int line, const char *format, ...)
{
va_list ap;
if (config.debug_level < level)
return;
if (!config.syslog)
fprintf(stderr, "[%s:%d] ", func, line);
va_start(ap, format);
if (config.syslog)
vsyslog(level >= MSG_DEBUG ? LOG_DEBUG : LOG_INFO, format, ap);
else
vfprintf(stderr, format, ap);
va_end(ap);
}
void debug_msg_cont(int level, const char *format, ...)
{
va_list ap;
if (config.debug_level < level)
return;
va_start(ap, format);
vfprintf(stderr, format, ap);
va_end(ap);
}
void usteer_init_defaults(void)
{
memset(&config, 0, sizeof(config));
config.sta_block_timeout = 30 * 1000;
config.local_sta_timeout = 120 * 1000;
config.measurement_report_timeout = 120 * 1000;
config.local_sta_update = 1 * 1000;
config.max_retry_band = 5;
config.max_neighbor_reports = 8;
config.seen_policy_timeout = 30 * 1000;
config.band_steering_threshold = 5;
config.load_balancing_threshold = 0;
config.remote_update_interval = 1000;
config.initial_connect_delay = 0;
config.remote_node_timeout = 10;
config.steer_reject_timeout = 60000;
config.band_steering_interval = 120000;
config.band_steering_min_snr = -60;
config.link_measurement_interval = 30000;
config.probe_steering = 0;
config.roam_kick_delay = 10000;
config.roam_process_timeout = 5 * 1000;
config.roam_scan_tries = 3;
config.roam_scan_timeout = 0;
config.roam_scan_interval = 10 * 1000;
config.roam_trigger_interval = 60 * 1000;
config.min_snr_kick_delay = 5 * 1000;
config.load_kick_enabled = false;
config.load_kick_threshold = 75;
config.load_kick_delay = 10 * 1000;
config.load_kick_min_clients = 10;
config.load_kick_reason_code = 5; /* WLAN_REASON_DISASSOC_AP_BUSY */
config.debug_level = MSG_FATAL;
}
void usteer_update_time(void)
{
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
current_time = (uint64_t) ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
}
static int usage(const char *prog)
{
fprintf(stderr, "Usage: %s [options]\n"
"Options:\n"
" -v: Increase debug level (repeat for more messages):\n"
" 1: info messages\n"
" 2: debug messages\n"
" 3: verbose debug messages\n"
" 4: include network messages\n"
" 5: include extra testing messages\n"
" -i <name>: Connect to other instances on interface <name>\n"
" -s: Output log messages via syslog instead of stderr\n"
" -D <n>: Do not daemonize, wait for <n> seconds and print\n"
" remote hosts and nodes\n"
"\n", prog);
return 1;
}
static void
usteer_dump_timeout(struct uloop_timeout *t)
{
struct usteer_remote_host *host;
struct usteer_remote_node *rn;
struct blob_buf b = {};
char *str;
void *c;
blob_buf_init(&b, 0);
c = blobmsg_open_table(&b, "hosts");
avl_for_each_element(&remote_hosts, host, avl)
usteer_dump_host(&b, host);
blobmsg_close_table(&b, c);
c = blobmsg_open_table(&b, "nodes");
for_each_remote_node(rn)
usteer_dump_node(&b, &rn->node);
blobmsg_close_table(&b, c);
str = blobmsg_format_json(b.head, true);
blob_buf_free(&b);
puts(str);
free(str);
uloop_end();
}
int main(int argc, char **argv)
{
struct uloop_timeout dump_timer;
int ch;
usteer_init_defaults();
while ((ch = getopt(argc, argv, "D:i:sv")) != -1) {
switch(ch) {
case 'v':
config.debug_level++;
break;
case 's':
config.syslog = true;
break;
case 'i':
usteer_interface_add(optarg);
break;
case 'D':
dump_time = atoi(optarg);
break;
default:
return usage(argv[0]);
}
}
openlog("usteer", 0, LOG_USER);
config_set_event_log_types(NULL);
usteer_update_time();
uloop_init();
ubus_ctx = ubus_connect(NULL);
if (!ubus_ctx) {
fprintf(stderr, "Failed to connect to ubus\n");
return -1;
}
ubus_add_uloop(ubus_ctx);
if (dump_time) {
dump_timer.cb = usteer_dump_timeout;
uloop_timeout_set(&dump_timer, dump_time * 1000);
} else {
usteer_ubus_init(ubus_ctx);
usteer_local_nodes_init(ubus_ctx);
}
uloop_run();
uloop_done();
return 0;
}
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