package/network/services/hostapd/files/wdev.uc

   1 #!/usr/bin/env ucode
   2 'use strict';
   3 import { vlist_new, is_equal, wdev_create, wdev_remove, wdev_generate_macaddr } from "/usr/share/hostap/common.uc";
   4 import { readfile, writefile, basename, readlink, glob } from "fs";
   5
   6 let keep_devices = {};
   7 let phy = shift(ARGV);
   8
   9 const mesh_params = [
  10         "mesh_retry_timeout", "mesh_confirm_timeout", "mesh_holding_timeout", "mesh_max_peer_links",
  11         "mesh_max_retries", "mesh_ttl", "mesh_element_ttl", "mesh_hwmp_max_preq_retries",
  12         "mesh_path_refresh_time", "mesh_min_discovery_timeout", "mesh_hwmp_active_path_timeout",
  13         "mesh_hwmp_preq_min_interval", "mesh_hwmp_net_diameter_traversal_time", "mesh_hwmp_rootmode",
  14         "mesh_hwmp_rann_interval", "mesh_gate_announcements", "mesh_sync_offset_max_neighor",
  15         "mesh_rssi_threshold", "mesh_hwmp_active_path_to_root_timeout", "mesh_hwmp_root_interval",
  16         "mesh_hwmp_confirmation_interval", "mesh_awake_window", "mesh_plink_timeout",
  17         "mesh_auto_open_plinks", "mesh_fwding", "mesh_power_mode"
  18 ];
  19
  20 function iface_stop(wdev)
  21 {
  22         if (keep_devices[wdev.ifname])
  23                 return;
  24
  25         wdev_remove(wdev.ifname);
  26 }
  27
  28 function iface_start(wdev)
  29 {
  30         let ifname = wdev.ifname;
  31
  32         if (readfile(`/sys/class/net/${ifname}/ifindex`)) {
  33                 system([ "ip", "link", "set", "dev", ifname, "down" ]);
  34                 wdev_remove(ifname);
  35         }
  36         wdev_create(phy, ifname, wdev);
  37         system([ "ip", "link", "set", "dev", ifname, "up" ]);
  38         if (wdev.freq)
  39                 system(`iw dev ${ifname} set freq ${wdev.freq} ${wdev.htmode}`);
  40         if (wdev.mode == "adhoc") {
  41                 let cmd = ["iw", "dev", ifname, "ibss", "join", wdev.ssid, wdev.freq, wdev.htmode, "fixed-freq" ];
  42                 if (wdev.bssid)
  43                         push(cmd, wdev.bssid);
  44                 for (let key in [ "beacon-interval", "basic-rates", "mcast-rate", "keys" ])
  45                         if (wdev[key])
  46                                 push(cmd, key, wdev[key]);
  47                 system(cmd);
  48         } else if (wdev.mode == "mesh") {
  49                 let cmd = [ "iw", "dev", ifname, "mesh", "join", wdev.ssid, "freq", wdev.freq, wdev.htmode ];
  50                 for (let key in [ "mcast-rate", "beacon-interval" ])
  51                         if (wdev[key])
  52                                 push(cmd, key, wdev[key]);
  53                 system(cmd);
  54
  55                 cmd = ["iw", "dev", ifname, "set", "mesh_param" ];
  56                 let len = length(cmd);
  57
  58                 for (let param in mesh_params)
  59                         if (wdev[param])
  60                                 push(cmd, param, wdev[param]);
  61
  62                 if (len == length(cmd))
  63                         return;
  64
  65                 system(cmd);
  66         }
  67
  68 }
  69
  70 function iface_cb(new_if, old_if)
  71 {
  72         if (old_if && new_if && is_equal(old_if, new_if))
  73                 return;
  74
  75         if (old_if)
  76                 iface_stop(old_if);
  77         if (new_if)
  78                 iface_start(new_if);
  79 }
  80
  81 function drop_inactive(config)
  82 {
  83         for (let key in config) {
  84                 if (!readfile(`/sys/class/net/${key}/ifindex`))
  85                         delete config[key];
  86         }
  87 }
  88
  89 function add_ifname(config)
  90 {
  91         for (let key in config)
  92                 config[key].ifname = key;
  93 }
  94
  95 function delete_ifname(config)
  96 {
  97         for (let key in config)
  98                 delete config[key].ifname;
  99 }
 100
 101 function add_existing(phy, config)
 102 {
 103         let wdevs = glob(`/sys/class/ieee80211/${phy}/device/net/*`);
 104         wdevs = map(wdevs, (arg) => basename(arg));
 105         for (let wdev in wdevs) {
 106                 if (config[wdev])
 107                         continue;
 108
 109                 if (basename(readlink(`/sys/class/net/${wdev}/phy80211`)) != phy)
 110                         continue;
 111
 112                 if (trim(readfile(`/sys/class/net/${wdev}/operstate`)) == "down")
 113                         config[wdev] = {};
 114         }
 115 }
 116
 117 function usage()
 118 {
 119         warn(`Usage: ${basename(sourcepath())} <phy> <command> [<arguments>]
 120
 121 Commands:
 122         set_config <config> [<device]...] - set phy configuration
 123         get_macaddr <id>                  - get phy MAC address for vif index <id>
 124 `);
 125         exit(1);
 126 }
 127
 128 const commands = {
 129         set_config: function(args) {
 130                 let statefile = `/var/run/wdev-${phy}.json`;
 131
 132                 let new_config = shift(args);
 133                 for (let dev in ARGV)
 134                         keep_devices[dev] = true;
 135
 136                 if (!new_config)
 137                         usage();
 138
 139                 new_config = json(new_config);
 140                 if (!new_config) {
 141                         warn("Invalid configuration\n");
 142                         exit(1);
 143                 }
 144
 145                 let old_config = readfile(statefile);
 146                 if (old_config)
 147                         old_config = json(old_config);
 148
 149                 let config = vlist_new(iface_cb);
 150                 if (type(old_config) == "object")
 151                         config.data = old_config;
 152
 153                 add_existing(phy, config.data);
 154                 add_ifname(config.data);
 155                 drop_inactive(config.data);
 156
 157                 add_ifname(new_config);
 158                 config.update(new_config);
 159
 160                 drop_inactive(config.data);
 161                 delete_ifname(config.data);
 162                 writefile(statefile, sprintf("%J", config.data));
 163         },
 164         get_macaddr: function(args) {
 165                 let data = {};
 166
 167                 for (let arg in args) {
 168                         arg = split(arg, "=", 2);
 169                         data[arg[0]] = arg[1];
 170                 }
 171
 172                 let macaddr = wdev_generate_macaddr(phy, data);
 173                 if (!macaddr) {
 174                         warn(`Could not get MAC address for phy ${phy}\n`);
 175                         exit(1);
 176                 }
 177
 178                 print(macaddr + "\n");
 179         },
 180 };
 181
 182 let command = shift(ARGV);
 183
 184 if (!phy || !command | !commands[command])
 185         usage();
 186
 187 if (!readfile(`/sys/class/ieee80211/${phy}/index`)) {
 188         warn(`PHY ${phy} does not exist\n`);
 189         exit(1);
 190 }
 191
 192 commands[command](ARGV);