ubus.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 <sys/types.h>
  21 #include <sys/socket.h>
  22 #include <net/ethernet.h>
  23 #ifdef linux
  24 #include <netinet/ether.h>
  25 #endif
  26
  27 #include "usteer.h"
  28 #include "node.h"
  29 #include "event.h"
  30
  31 static struct blob_buf b;
  32 static KVLIST(host_info, kvlist_blob_len);
  33
  34 static void *
  35 blobmsg_open_table_mac(struct blob_buf *buf, uint8_t *addr)
  36 {
  37         char str[20];
  38         sprintf(str, MAC_ADDR_FMT, MAC_ADDR_DATA(addr));
  39         return blobmsg_open_table(buf, str);
  40 }
  41
  42 static int
  43 usteer_ubus_get_clients(struct ubus_context *ctx, struct ubus_object *obj,
  44                        struct ubus_request_data *req, const char *method,
  45                        struct blob_attr *msg)
  46 {
  47         struct sta_info *si;
  48         struct sta *sta;
  49         void *_s, *_cur_n;
  50
  51         blob_buf_init(&b, 0);
  52         avl_for_each_element(&stations, sta, avl) {
  53                 _s = blobmsg_open_table_mac(&b, sta->addr);
  54                 list_for_each_entry(si, &sta->nodes, list) {
  55                         _cur_n = blobmsg_open_table(&b, usteer_node_name(si->node));
  56                         blobmsg_add_u8(&b, "connected", si->connected);
  57                         blobmsg_add_u32(&b, "signal", si->signal);
  58                         blobmsg_close_table(&b, _cur_n);
  59                 }
  60                 blobmsg_close_table(&b, _s);
  61         }
  62         ubus_send_reply(ctx, req, b.head);
  63         return 0;
  64 }
  65
  66 static struct blobmsg_policy client_arg[] = {
  67         { .name = "address", .type = BLOBMSG_TYPE_STRING, },
  68 };
  69
  70 static void
  71 usteer_ubus_add_stats(struct sta_info_stats *stats, const char *name)
  72 {
  73         void *s;
  74
  75         s = blobmsg_open_table(&b, name);
  76         blobmsg_add_u32(&b, "requests", stats->requests);
  77         blobmsg_add_u32(&b, "blocked_cur", stats->blocked_cur);
  78         blobmsg_add_u32(&b, "blocked_total", stats->blocked_total);
  79         blobmsg_close_table(&b, s);
  80 }
  81
  82 static int
  83 usteer_ubus_get_client_info(struct ubus_context *ctx, struct ubus_object *obj,
  84                            struct ubus_request_data *req, const char *method,
  85                            struct blob_attr *msg)
  86 {
  87         struct sta_info *si;
  88         struct sta *sta;
  89         struct blob_attr *mac_str;
  90         uint8_t *mac;
  91         void *_n, *_cur_n, *_s;
  92         int i;
  93
  94         blobmsg_parse(client_arg, 1, &mac_str, blob_data(msg), blob_len(msg));
  95         if (!mac_str)
  96                 return UBUS_STATUS_INVALID_ARGUMENT;
  97
  98         mac = (uint8_t *) ether_aton(blobmsg_data(mac_str));
  99         if (!mac)
 100                 return UBUS_STATUS_INVALID_ARGUMENT;
 101
 102         sta = usteer_sta_get(mac, false);
 103         if (!sta)
 104                 return UBUS_STATUS_NOT_FOUND;
 105
 106         blob_buf_init(&b, 0);
 107         blobmsg_add_u8(&b, "2ghz", sta->seen_2ghz);
 108         blobmsg_add_u8(&b, "5ghz", sta->seen_5ghz);
 109         _n = blobmsg_open_table(&b, "nodes");
 110         list_for_each_entry(si, &sta->nodes, list) {
 111                 _cur_n = blobmsg_open_table(&b, usteer_node_name(si->node));
 112                 blobmsg_add_u8(&b, "connected", si->connected);
 113                 blobmsg_add_u32(&b, "signal", si->signal);
 114                 _s = blobmsg_open_table(&b, "stats");
 115                 for (i = 0; i < __EVENT_TYPE_MAX; i++)
 116                         usteer_ubus_add_stats(&si->stats[EVENT_TYPE_PROBE], event_types[i]);
 117                 blobmsg_close_table(&b, _s);
 118                 blobmsg_close_table(&b, _cur_n);
 119         }
 120         blobmsg_close_table(&b, _n);
 121
 122         ubus_send_reply(ctx, req, b.head);
 123
 124         return 0;
 125 }
 126
 127 enum cfg_type {
 128         CFG_BOOL,
 129         CFG_I32,
 130         CFG_U32,
 131         CFG_ARRAY_CB,
 132         CFG_STRING_CB,
 133 };
 134
 135 struct cfg_item {
 136         enum cfg_type type;
 137         union {
 138                 bool *BOOL;
 139                 uint32_t *U32;
 140                 int32_t *I32;
 141                 struct {
 142                         void (*set)(struct blob_attr *data);
 143                         void (*get)(struct blob_buf *buf);
 144                 } CB;
 145         } ptr;
 146 };
 147
 148 #define __config_items \
 149         _cfg(BOOL, syslog), \
 150         _cfg(U32, debug_level), \
 151         _cfg(BOOL, ipv6), \
 152         _cfg(U32, sta_block_timeout), \
 153         _cfg(U32, local_sta_timeout), \
 154         _cfg(U32, local_sta_update), \
 155         _cfg(U32, max_neighbor_reports), \
 156         _cfg(U32, max_retry_band), \
 157         _cfg(U32, seen_policy_timeout), \
 158         _cfg(U32, measurement_report_timeout), \
 159         _cfg(U32, load_balancing_threshold), \
 160         _cfg(U32, band_steering_threshold), \
 161         _cfg(U32, remote_update_interval), \
 162         _cfg(U32, remote_node_timeout), \
 163         _cfg(BOOL, assoc_steering), \
 164         _cfg(I32, min_connect_snr), \
 165         _cfg(I32, min_snr), \
 166         _cfg(U32, min_snr_kick_delay), \
 167         _cfg(U32, roam_process_timeout), \
 168         _cfg(I32, roam_scan_snr), \
 169         _cfg(U32, roam_scan_tries), \
 170         _cfg(U32, roam_scan_timeout), \
 171         _cfg(U32, roam_scan_interval), \
 172         _cfg(I32, roam_trigger_snr), \
 173         _cfg(U32, roam_trigger_interval), \
 174         _cfg(U32, roam_kick_delay), \
 175         _cfg(U32, signal_diff_threshold), \
 176         _cfg(U32, initial_connect_delay), \
 177         _cfg(BOOL, load_kick_enabled), \
 178         _cfg(U32, load_kick_threshold), \
 179         _cfg(U32, load_kick_delay), \
 180         _cfg(U32, load_kick_min_clients), \
 181         _cfg(U32, load_kick_reason_code), \
 182         _cfg(ARRAY_CB, interfaces), \
 183         _cfg(STRING_CB, node_up_script), \
 184         _cfg(ARRAY_CB, event_log_types), \
 185         _cfg(ARRAY_CB, ssid_list)
 186
 187 enum cfg_items {
 188 #define _cfg(_type, _name) CFG_##_name
 189         __config_items,
 190 #undef _cfg
 191         __CFG_MAX,
 192 };
 193
 194 static const struct blobmsg_policy config_policy[__CFG_MAX] = {
 195 #define _cfg_policy(_type, _name) [CFG_##_name] = { .name = #_name, .type = BLOBMSG_TYPE_ ## _type }
 196 #define _cfg_policy_BOOL(_name) _cfg_policy(BOOL, _name)
 197 #define _cfg_policy_U32(_name) _cfg_policy(INT32, _name)
 198 #define _cfg_policy_I32(_name) _cfg_policy(INT32, _name)
 199 #define _cfg_policy_ARRAY_CB(_name) _cfg_policy(ARRAY, _name)
 200 #define _cfg_policy_STRING_CB(_name) _cfg_policy(STRING, _name)
 201 #define _cfg(_type, _name) _cfg_policy_##_type(_name)
 202         __config_items,
 203 #undef _cfg
 204 };
 205
 206 static const struct cfg_item config_data[__CFG_MAX] = {
 207 #define _cfg_data_BOOL(_name) .ptr.BOOL = &config._name
 208 #define _cfg_data_U32(_name) .ptr.U32 = &config._name
 209 #define _cfg_data_I32(_name) .ptr.I32 = &config._name
 210 #define _cfg_data_ARRAY_CB(_name) .ptr.CB = { .set = config_set_##_name, .get = config_get_##_name }
 211 #define _cfg_data_STRING_CB(_name) .ptr.CB = { .set = config_set_##_name, .get = config_get_##_name }
 212 #define _cfg(_type, _name) [CFG_##_name] = { .type = CFG_##_type, _cfg_data_##_type(_name) }
 213         __config_items,
 214 #undef _cfg
 215 };
 216
 217 static int
 218 usteer_ubus_get_config(struct ubus_context *ctx, struct ubus_object *obj,
 219                       struct ubus_request_data *req, const char *method,
 220                       struct blob_attr *msg)
 221 {
 222         int i;
 223
 224         blob_buf_init(&b, 0);
 225         for (i = 0; i < __CFG_MAX; i++) {
 226                 switch(config_data[i].type) {
 227                 case CFG_BOOL:
 228                         blobmsg_add_u8(&b, config_policy[i].name,
 229                                         *config_data[i].ptr.BOOL);
 230                         break;
 231                 case CFG_I32:
 232                 case CFG_U32:
 233                         blobmsg_add_u32(&b, config_policy[i].name,
 234                                         *config_data[i].ptr.U32);
 235                         break;
 236                 case CFG_ARRAY_CB:
 237                 case CFG_STRING_CB:
 238                         config_data[i].ptr.CB.get(&b);
 239                         break;
 240                 }
 241         }
 242         ubus_send_reply(ctx, req, b.head);
 243         return 0;
 244 }
 245
 246 static int
 247 usteer_ubus_set_config(struct ubus_context *ctx, struct ubus_object *obj,
 248                       struct ubus_request_data *req, const char *method,
 249                       struct blob_attr *msg)
 250 {
 251         struct blob_attr *tb[__CFG_MAX];
 252         int i;
 253
 254         if (!strcmp(method, "set_config"))
 255                 usteer_init_defaults();
 256
 257         blobmsg_parse(config_policy, __CFG_MAX, tb, blob_data(msg), blob_len(msg));
 258         for (i = 0; i < __CFG_MAX; i++) {
 259                 switch(config_data[i].type) {
 260                 case CFG_BOOL:
 261                         if (!tb[i])
 262                                 continue;
 263
 264                         *config_data[i].ptr.BOOL = blobmsg_get_u8(tb[i]);
 265                         break;
 266                 case CFG_I32:
 267                 case CFG_U32:
 268                         if (!tb[i])
 269                                 continue;
 270
 271                         *config_data[i].ptr.U32 = blobmsg_get_u32(tb[i]);
 272                         break;
 273                 case CFG_ARRAY_CB:
 274                 case CFG_STRING_CB:
 275                         config_data[i].ptr.CB.set(tb[i]);
 276                         break;
 277                 }
 278         }
 279
 280         usteer_interface_init();
 281
 282         return 0;
 283 }
 284
 285 void usteer_dump_node(struct blob_buf *buf, struct usteer_node *node)
 286 {
 287         void *c, *roam_events;
 288
 289         c = blobmsg_open_table(buf, usteer_node_name(node));
 290         blobmsg_printf(buf, "bssid", MAC_ADDR_FMT, MAC_ADDR_DATA(node->bssid));
 291         blobmsg_add_u32(buf, "freq", node->freq);
 292         blobmsg_add_u32(buf, "n_assoc", node->n_assoc);
 293         blobmsg_add_u32(buf, "noise", node->noise);
 294         blobmsg_add_u32(buf, "load", node->load);
 295         blobmsg_add_u32(buf, "max_assoc", node->max_assoc);
 296
 297         roam_events = blobmsg_open_table(buf, "roam_events");
 298         blobmsg_add_u32(buf, "source", node->roam_events.source);
 299         blobmsg_add_u32(buf, "target", node->roam_events.target);
 300         blobmsg_close_table(buf, roam_events);
 301
 302         if (node->rrm_nr)
 303                 blobmsg_add_field(buf, BLOBMSG_TYPE_ARRAY, "rrm_nr",
 304                                   blobmsg_data(node->rrm_nr),
 305                                   blobmsg_data_len(node->rrm_nr));
 306         if (node->node_info)
 307                 blobmsg_add_field(buf, BLOBMSG_TYPE_TABLE, "node_info",
 308                                   blob_data(node->node_info),
 309                                   blob_len(node->node_info));
 310
 311         blobmsg_close_table(buf, c);
 312 }
 313
 314 void usteer_dump_host(struct blob_buf *buf, struct usteer_remote_host *host)
 315 {
 316         void *c;
 317
 318         c = blobmsg_open_table(buf, host->addr);
 319         blobmsg_add_u32(buf, "id", (uint32_t)(uintptr_t)host->avl.key);
 320         if (host->host_info)
 321                 blobmsg_add_field(buf, BLOBMSG_TYPE_TABLE, "host_info",
 322                                   blobmsg_data(host->host_info),
 323                                   blobmsg_len(host->host_info));
 324         blobmsg_close_table(buf, c);
 325 }
 326
 327 static int
 328 usteer_ubus_local_info(struct ubus_context *ctx, struct ubus_object *obj,
 329                       struct ubus_request_data *req, const char *method,
 330                       struct blob_attr *msg)
 331 {
 332         struct usteer_node *node;
 333
 334         blob_buf_init(&b, 0);
 335
 336         for_each_local_node(node)
 337                 usteer_dump_node(&b, node);
 338
 339         ubus_send_reply(ctx, req, b.head);
 340
 341         return 0;
 342 }
 343
 344 static int
 345 usteer_ubus_remote_hosts(struct ubus_context *ctx, struct ubus_object *obj,
 346                          struct ubus_request_data *req, const char *method,
 347                          struct blob_attr *msg)
 348 {
 349         struct usteer_remote_host *host;
 350
 351         blob_buf_init(&b, 0);
 352
 353         avl_for_each_element(&remote_hosts, host, avl)
 354                 usteer_dump_host(&b, host);
 355
 356         ubus_send_reply(ctx, req, b.head);
 357
 358         return 0;
 359 }
 360
 361 static int
 362 usteer_ubus_remote_info(struct ubus_context *ctx, struct ubus_object *obj,
 363                        struct ubus_request_data *req, const char *method,
 364                        struct blob_attr *msg)
 365 {
 366         struct usteer_remote_node *rn;
 367
 368         blob_buf_init(&b, 0);
 369
 370         for_each_remote_node(rn)
 371                 usteer_dump_node(&b, &rn->node);
 372
 373         ubus_send_reply(ctx, req, b.head);
 374
 375         return 0;
 376 }
 377
 378 static int
 379 usteer_ubus_get_connected_clients(struct ubus_context *ctx, struct ubus_object *obj,
 380                                   struct ubus_request_data *req, const char *method,
 381                                   struct blob_attr *msg)
 382 {
 383         struct usteer_measurement_report *mr;
 384         struct usteer_node *node;
 385         struct sta_info *si;
 386         void *n, *s, *t, *a;
 387
 388         blob_buf_init(&b, 0);
 389
 390         for_each_local_node(node) {
 391                 n = blobmsg_open_table(&b, usteer_node_name(node));
 392
 393                 list_for_each_entry(si, &node->sta_info, node_list) {
 394                         if (si->connected != STA_CONNECTED)
 395                                 continue;
 396
 397                         s = blobmsg_open_table_mac(&b, si->sta->addr);
 398                         blobmsg_add_u32(&b, "signal", si->signal);
 399                         blobmsg_add_u64(&b, "created", si->created);
 400                         blobmsg_add_u64(&b, "seen", si->seen);
 401                         blobmsg_add_u64(&b, "last_connected", si->last_connected);
 402
 403                         t = blobmsg_open_table(&b, "snr-kick");
 404                         blobmsg_add_u32(&b, "seen-below", si->below_min_snr);
 405                         blobmsg_close_table(&b, t);
 406
 407                         t = blobmsg_open_table(&b, "load-kick");
 408                         blobmsg_add_u32(&b, "count", si->kick_count);
 409                         blobmsg_close_table(&b, t);
 410
 411                         t = blobmsg_open_table(&b, "roam-state-machine");
 412                         blobmsg_add_u32(&b, "tries", si->roam_tries);
 413                         blobmsg_add_u64(&b, "event", si->roam_event);
 414                         blobmsg_add_u64(&b, "kick", si->roam_kick);
 415                         blobmsg_add_u64(&b, "scan_start", si->roam_scan_start);
 416                         blobmsg_add_u64(&b, "scan_timeout_start", si->roam_scan_timeout_start);
 417                         blobmsg_close_table(&b, t);
 418
 419                         t = blobmsg_open_table(&b, "bss-transition-response");
 420                         blobmsg_add_u32(&b, "status-code", si->bss_transition_response.status_code);
 421                         blobmsg_add_u64(&b, "timestamp", si->bss_transition_response.timestamp);
 422                         blobmsg_close_table(&b, t);
 423
 424                         /* Measurements */
 425                         a = blobmsg_open_array(&b, "measurements");
 426                         list_for_each_entry(mr, &si->sta->measurements, sta_list) {
 427                                 t = blobmsg_open_table(&b, "");
 428                                 blobmsg_add_string(&b, "node", usteer_node_name(mr->node));
 429                                 blobmsg_add_u32(&b, "rcpi", mr->beacon_report.rcpi);
 430                                 blobmsg_add_u32(&b, "rsni", mr->beacon_report.rsni);
 431                                 blobmsg_add_u64(&b, "timestamp", mr->timestamp);
 432                                 blobmsg_close_table(&b, t);
 433                         }
 434                         blobmsg_close_array(&b, a);
 435
 436                         blobmsg_close_table(&b, s);
 437                 }
 438
 439                 blobmsg_close_table(&b, n);
 440         }
 441
 442         ubus_send_reply(ctx, req, b.head);
 443
 444         return 0;
 445 }
 446
 447 enum {
 448         NODE_DATA_NODE,
 449         NODE_DATA_VALUES,
 450         __NODE_DATA_MAX,
 451 };
 452
 453 static const struct blobmsg_policy set_node_data_policy[] = {
 454         [NODE_DATA_NODE] = { "node", BLOBMSG_TYPE_STRING },
 455         [NODE_DATA_VALUES] = { "data", BLOBMSG_TYPE_TABLE },
 456 };
 457
 458 static const struct blobmsg_policy del_node_data_policy[] = {
 459         [NODE_DATA_NODE] = { "node", BLOBMSG_TYPE_STRING },
 460         [NODE_DATA_VALUES] = { "names", BLOBMSG_TYPE_ARRAY },
 461 };
 462
 463 static void
 464 usteer_update_kvlist_data(struct kvlist *kv, struct blob_attr *data,
 465                           bool delete)
 466 {
 467         struct blob_attr *cur;
 468         int rem;
 469
 470         blobmsg_for_each_attr(cur, data, rem) {
 471                 if (delete)
 472                         kvlist_delete(kv, blobmsg_get_string(cur));
 473                 else
 474                         kvlist_set(kv, blobmsg_name(cur), cur);
 475         }
 476 }
 477
 478 static void
 479 usteer_update_kvlist_blob(struct blob_attr **dest, struct kvlist *kv)
 480 {
 481         struct blob_attr *val;
 482         const char *name;
 483
 484         blob_buf_init(&b, 0);
 485         kvlist_for_each(kv, name, val)
 486                 blobmsg_add_field(&b, blobmsg_type(val), name,
 487                                   blobmsg_data(val), blobmsg_len(val));
 488
 489         val = b.head;
 490         if (!blobmsg_len(val))
 491                 val = NULL;
 492
 493         usteer_node_set_blob(dest, val);
 494 }
 495
 496 static int
 497 usteer_ubus_update_node_data(struct ubus_context *ctx, struct ubus_object *obj,
 498                              struct ubus_request_data *req, const char *method,
 499                              struct blob_attr *msg)
 500 {
 501         const struct blobmsg_policy *policy;
 502         struct blob_attr *tb[__NODE_DATA_MAX];
 503         struct usteer_local_node *ln;
 504         struct blob_attr *val;
 505         const char *name;
 506         bool delete;
 507
 508         delete = !strncmp(method, "del", 3);
 509         policy = delete ? del_node_data_policy : set_node_data_policy;
 510
 511         blobmsg_parse(policy, __NODE_DATA_MAX, tb, blob_data(msg), blob_len(msg));
 512         if (!tb[NODE_DATA_NODE] || !tb[NODE_DATA_VALUES])
 513                 return UBUS_STATUS_INVALID_ARGUMENT;
 514
 515         name = blobmsg_get_string(tb[NODE_DATA_NODE]);
 516         val = tb[NODE_DATA_VALUES];
 517         if (delete && blobmsg_check_array(val, BLOBMSG_TYPE_STRING) < 0)
 518                 return UBUS_STATUS_INVALID_ARGUMENT;
 519
 520         if (strcmp(name, "*") != 0) {
 521                 ln = avl_find_element(&local_nodes, name, ln, node.avl);
 522                 if (!ln)
 523                         return UBUS_STATUS_NOT_FOUND;
 524
 525                 usteer_update_kvlist_data(&ln->node_info, val, delete);
 526                 usteer_update_kvlist_blob(&ln->node.node_info, &ln->node_info);
 527
 528                 return 0;
 529         }
 530
 531         usteer_update_kvlist_data(&host_info, val, delete);
 532         usteer_update_kvlist_blob(&host_info_blob, &host_info);
 533
 534         return 0;
 535 }
 536
 537 static const struct ubus_method usteer_methods[] = {
 538         UBUS_METHOD_NOARG("local_info", usteer_ubus_local_info),
 539         UBUS_METHOD_NOARG("remote_hosts", usteer_ubus_remote_hosts),
 540         UBUS_METHOD_NOARG("remote_info", usteer_ubus_remote_info),
 541         UBUS_METHOD_NOARG("connected_clients", usteer_ubus_get_connected_clients),
 542         UBUS_METHOD_NOARG("get_clients", usteer_ubus_get_clients),
 543         UBUS_METHOD("get_client_info", usteer_ubus_get_client_info, client_arg),
 544         UBUS_METHOD_NOARG("get_config", usteer_ubus_get_config),
 545         UBUS_METHOD("set_config", usteer_ubus_set_config, config_policy),
 546         UBUS_METHOD("update_config", usteer_ubus_set_config, config_policy),
 547         UBUS_METHOD("set_node_data", usteer_ubus_update_node_data, set_node_data_policy),
 548         UBUS_METHOD("delete_node_data", usteer_ubus_update_node_data, del_node_data_policy),
 549 };
 550
 551 static struct ubus_object_type usteer_obj_type =
 552         UBUS_OBJECT_TYPE("usteer", usteer_methods);
 553
 554 struct ubus_object usteer_obj = {
 555         .name = "usteer",
 556         .type = &usteer_obj_type,
 557         .methods = usteer_methods,
 558         .n_methods = ARRAY_SIZE(usteer_methods),
 559 };
 560
 561 static bool
 562 usteer_add_nr_entry(struct usteer_node *ln, struct usteer_node *node)
 563 {
 564         struct blobmsg_policy policy[3] = {
 565                 { .type = BLOBMSG_TYPE_STRING },
 566                 { .type = BLOBMSG_TYPE_STRING },
 567                 { .type = BLOBMSG_TYPE_STRING },
 568         };
 569         struct blob_attr *tb[3];
 570
 571         if (!node->rrm_nr)
 572                 return false;
 573
 574         if (strcmp(ln->ssid, node->ssid) != 0)
 575                 return false;
 576
 577         blobmsg_parse_array(policy, ARRAY_SIZE(tb), tb,
 578                             blobmsg_data(node->rrm_nr),
 579                             blobmsg_data_len(node->rrm_nr));
 580         if (!tb[2])
 581                 return false;
 582
 583         blobmsg_add_field(&b, BLOBMSG_TYPE_STRING, "",
 584                           blobmsg_data(tb[2]),
 585                           blobmsg_data_len(tb[2]));
 586
 587         return true;
 588 }
 589
 590 static void
 591 usteer_ubus_disassoc_add_neighbors(struct sta_info *si)
 592 {
 593         struct usteer_node *node, *last_remote_neighbor = NULL;
 594         int i = 0;
 595         void *c;
 596
 597         c = blobmsg_open_array(&b, "neighbors");
 598         for_each_local_node(node) {
 599                 if (i >= config.max_neighbor_reports)
 600                         break;
 601                 if (si->node == node)
 602                         continue;
 603                 if (usteer_add_nr_entry(si->node, node))
 604                         i++;
 605         }
 606
 607         while (i < config.max_neighbor_reports) {
 608                 node = usteer_node_get_next_neighbor(si->node, last_remote_neighbor);
 609                 if (!node) {
 610                         /* No more nodes available */
 611                         break;
 612                 }
 613
 614                 last_remote_neighbor = node;
 615                 if (usteer_add_nr_entry(si->node, node))
 616                         i++;
 617         }
 618         blobmsg_close_array(&b, c);
 619 }
 620
 621 int usteer_ubus_bss_transition_request(struct sta_info *si,
 622                                        uint8_t dialog_token,
 623                                        bool disassoc_imminent,
 624                                        bool abridged,
 625                                        uint8_t validity_period)
 626 {
 627         struct usteer_local_node *ln = container_of(si->node, struct usteer_local_node, node);
 628
 629         blob_buf_init(&b, 0);
 630         blobmsg_printf(&b, "addr", MAC_ADDR_FMT, MAC_ADDR_DATA(si->sta->addr));
 631         blobmsg_add_u32(&b, "dialog_token", dialog_token);
 632         blobmsg_add_u8(&b, "disassociation_imminent", disassoc_imminent);
 633         blobmsg_add_u8(&b, "abridged", abridged);
 634         blobmsg_add_u32(&b, "validity_period", validity_period);
 635         usteer_ubus_disassoc_add_neighbors(si);
 636         return ubus_invoke(ubus_ctx, ln->obj_id, "bss_transition_request", b.head, NULL, 0, 100);
 637 }
 638
 639 int usteer_ubus_notify_client_disassoc(struct sta_info *si)
 640 {
 641         struct usteer_local_node *ln = container_of(si->node, struct usteer_local_node, node);
 642
 643         blob_buf_init(&b, 0);
 644         blobmsg_printf(&b, "addr", MAC_ADDR_FMT, MAC_ADDR_DATA(si->sta->addr));
 645         blobmsg_add_u32(&b, "duration", config.roam_kick_delay);
 646         usteer_ubus_disassoc_add_neighbors(si);
 647         return ubus_invoke(ubus_ctx, ln->obj_id, "wnm_disassoc_imminent", b.head, NULL, 0, 100);
 648 }
 649
 650 int usteer_ubus_trigger_client_scan(struct sta_info *si)
 651 {
 652         struct usteer_local_node *ln = container_of(si->node, struct usteer_local_node, node);
 653
 654         if (!usteer_sta_supports_beacon_measurement_mode(si->sta, BEACON_MEASUREMENT_ACTIVE)) {
 655                 MSG(DEBUG, "STA does not support beacon measurement sta=" MAC_ADDR_FMT "\n", MAC_ADDR_DATA(si->sta->addr));
 656                 return 0;
 657         }
 658
 659         si->scan_band = !si->scan_band;
 660
 661         blob_buf_init(&b, 0);
 662         blobmsg_printf(&b, "addr", MAC_ADDR_FMT, MAC_ADDR_DATA(si->sta->addr));
 663         blobmsg_add_string(&b, "ssid", si->node->ssid);
 664         blobmsg_add_u32(&b, "mode", BEACON_MEASUREMENT_ACTIVE);
 665         blobmsg_add_u32(&b, "duration", config.roam_scan_interval / 100);
 666         blobmsg_add_u32(&b, "channel", 0);
 667         blobmsg_add_u32(&b, "op_class", si->scan_band ? 1 : 12);
 668         return ubus_invoke(ubus_ctx, ln->obj_id, "rrm_beacon_req", b.head, NULL, 0, 100);
 669 }
 670
 671 void usteer_ubus_kick_client(struct sta_info *si)
 672 {
 673         struct usteer_local_node *ln = container_of(si->node, struct usteer_local_node, node);
 674
 675         blob_buf_init(&b, 0);
 676         blobmsg_printf(&b, "addr", MAC_ADDR_FMT, MAC_ADDR_DATA(si->sta->addr));
 677         blobmsg_add_u32(&b, "reason", config.load_kick_reason_code);
 678         blobmsg_add_u8(&b, "deauth", 1);
 679         ubus_invoke(ubus_ctx, ln->obj_id, "del_client", b.head, NULL, 0, 100);
 680         usteer_sta_disconnected(si);
 681         si->roam_kick = current_time;
 682 }
 683
 684 void usteer_ubus_init(struct ubus_context *ctx)
 685 {
 686         ubus_add_object(ctx, &usteer_obj);
 687 }