main.c

   1 /*
   2  *   This program is free software; you can redistribute it and/or modify
   3  *   it under the terms of the GNU General Public License as published by
   4  *   the Free Software Foundation; either version 2 of the License.
   5  *
   6  *   This program is distributed in the hope that it will be useful,
   7  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9  *   GNU General Public License for more details.
  10  *
  11  *   You should have received a copy of the GNU General Public License
  12  *   along with this program; if not, write to the Free Software
  13  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  14  *
  15  *   Copyright (C) 2020 embedd.ch
  16  *   Copyright (C) 2020 Felix Fietkau <nbd@nbd.name>
  17  *   Copyright (C) 2020 John Crispin <john@phrozen.org>
  18  */
  19
  20 #include <unistd.h>
  21 #include <stdarg.h>
  22 #include <syslog.h>
  23
  24 #include "usteer.h"
  25
  26 struct ubus_context *ubus_ctx;
  27 struct usteer_config config = {};
  28 uint64_t current_time;
  29
  30 LIST_HEAD(node_handlers);
  31
  32 const char * const event_types[__EVENT_TYPE_MAX] = {
  33         [EVENT_TYPE_PROBE] = "probe",
  34         [EVENT_TYPE_AUTH] = "auth",
  35         [EVENT_TYPE_ASSOC] = "assoc",
  36 };
  37
  38 void debug_msg(int level, const char *func, int line, const char *format, ...)
  39 {
  40         va_list ap;
  41
  42         if (config.debug_level < level)
  43                 return;
  44
  45         if (!config.syslog)
  46                 fprintf(stderr, "[%s:%d] ", func, line);
  47
  48         va_start(ap, format);
  49         if (config.syslog)
  50                 vsyslog(level >= MSG_DEBUG ? LOG_DEBUG : LOG_INFO, format, ap);
  51         else
  52                 vfprintf(stderr, format, ap);
  53         va_end(ap);
  54
  55 }
  56
  57 void debug_msg_cont(int level, const char *format, ...)
  58 {
  59         va_list ap;
  60
  61         if (config.debug_level < level)
  62                 return;
  63
  64         va_start(ap, format);
  65         vfprintf(stderr, format, ap);
  66         va_end(ap);
  67 }
  68
  69 void usteer_init_defaults(void)
  70 {
  71         memset(&config, 0, sizeof(config));
  72
  73         config.sta_block_timeout = 30 * 1000;
  74         config.local_sta_timeout = 120 * 1000;
  75         config.local_sta_update = 1 * 1000;
  76         config.max_retry_band = 5;
  77         config.seen_policy_timeout = 30 * 1000;
  78         config.band_steering_threshold = 5;
  79         config.load_balancing_threshold = 5;
  80         config.remote_update_interval = 1000;
  81         config.initial_connect_delay = 0;
  82         config.remote_node_timeout = 120 * 1000;
  83
  84         config.roam_kick_delay = 100;
  85         config.roam_scan_tries = 3;
  86         config.roam_scan_interval = 10 * 1000;
  87         config.roam_trigger_interval = 60 * 1000;
  88
  89         config.load_kick_enabled = false;
  90         config.load_kick_threshold = 75;
  91         config.load_kick_delay = 10 * 1000;
  92         config.load_kick_min_clients = 10;
  93         config.load_kick_reason_code = 5; /* WLAN_REASON_DISASSOC_AP_BUSY */
  94
  95         config.debug_level = MSG_FATAL;
  96 }
  97
  98 void usteer_update_time(void)
  99 {
 100         struct timespec ts;
 101
 102         clock_gettime(CLOCK_MONOTONIC, &ts);
 103         current_time = (uint64_t) ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
 104 }
 105
 106 static int usage(const char *prog)
 107 {
 108         fprintf(stderr, "Usage: %s [options]\n"
 109                 "Options:\n"
 110                 " -v:           Increase debug level (repeat for more messages):\n"
 111                 "               1: info messages\n"
 112                 "               2: debug messages\n"
 113                 "               3: verbose debug messages\n"
 114                 "               4: include network messages\n"
 115                 "               5: include extra testing messages\n"
 116                 " -i <name>:    Connect to other instances on interface <name>\n"
 117                 " -s:           Output log messages via syslog instead of stderr\n"
 118                 "\n", prog);
 119         return 1;
 120 }
 121
 122 int main(int argc, char **argv)
 123 {
 124         int ch;
 125
 126         usteer_init_defaults();
 127
 128         while ((ch = getopt(argc, argv, "i:sv")) != -1) {
 129                 switch(ch) {
 130                 case 'v':
 131                         config.debug_level++;
 132                         break;
 133                 case 's':
 134                         config.syslog = true;
 135                         break;
 136                 case 'i':
 137                         usteer_interface_add(optarg);
 138                         break;
 139                 default:
 140                         return usage(argv[0]);
 141                 }
 142         }
 143
 144         openlog("usteer", 0, LOG_USER);
 145
 146         usteer_update_time();
 147         uloop_init();
 148
 149         ubus_ctx = ubus_connect(NULL);
 150         if (!ubus_ctx) {
 151                 fprintf(stderr, "Failed to connect to ubus\n");
 152                 return -1;
 153         }
 154
 155         ubus_add_uloop(ubus_ctx);
 156         usteer_ubus_init(ubus_ctx);
 157         usteer_interface_init();
 158         usteer_local_nodes_init(ubus_ctx);
 159         uloop_run();
 160
 161         uloop_done();
 162         return 0;
 163 }