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(BOOL, local_mode), \
 153         _cfg(U32, sta_block_timeout), \
 154         _cfg(U32, local_sta_timeout), \
 155         _cfg(U32, local_sta_update), \
 156         _cfg(U32, max_neighbor_reports), \
 157         _cfg(U32, max_retry_band), \
 158         _cfg(U32, seen_policy_timeout), \
 159         _cfg(U32, measurement_report_timeout), \
 160         _cfg(U32, load_balancing_threshold), \
 161         _cfg(U32, band_steering_threshold), \
 162         _cfg(U32, remote_update_interval), \
 163         _cfg(U32, remote_node_timeout), \
 164         _cfg(BOOL, assoc_steering), \
 165         _cfg(I32, min_connect_snr), \
 166         _cfg(I32, min_snr), \
 167         _cfg(U32, min_snr_kick_delay), \
 168         _cfg(U32, steer_reject_timeout), \
 169         _cfg(U32, roam_process_timeout), \
 170         _cfg(I32, roam_scan_snr), \
 171         _cfg(U32, roam_scan_tries), \
 172         _cfg(U32, roam_scan_timeout), \
 173         _cfg(U32, roam_scan_interval), \
 174         _cfg(I32, roam_trigger_snr), \
 175         _cfg(U32, roam_trigger_interval), \
 176         _cfg(U32, roam_kick_delay), \
 177         _cfg(U32, signal_diff_threshold), \
 178         _cfg(U32, initial_connect_delay), \
 179         _cfg(BOOL, load_kick_enabled), \
 180         _cfg(U32, load_kick_threshold), \
 181         _cfg(U32, load_kick_delay), \
 182         _cfg(U32, load_kick_min_clients), \
 183         _cfg(U32, load_kick_reason_code), \
 184         _cfg(U32, band_steering_interval), \
 185         _cfg(I32, band_steering_min_snr), \
 186         _cfg(U32, link_measurement_interval), \
 187         _cfg(ARRAY_CB, interfaces), \
 188         _cfg(STRING_CB, node_up_script), \
 189         _cfg(ARRAY_CB, event_log_types), \
 190         _cfg(ARRAY_CB, ssid_list)
 191
 192 enum cfg_items {
 193 #define _cfg(_type, _name) CFG_##_name
 194         __config_items,
 195 #undef _cfg
 196         __CFG_MAX,
 197 };
 198
 199 static const struct blobmsg_policy config_policy[__CFG_MAX] = {
 200 #define _cfg_policy(_type, _name) [CFG_##_name] = { .name = #_name, .type = BLOBMSG_TYPE_ ## _type }
 201 #define _cfg_policy_BOOL(_name) _cfg_policy(BOOL, _name)
 202 #define _cfg_policy_U32(_name) _cfg_policy(INT32, _name)
 203 #define _cfg_policy_I32(_name) _cfg_policy(INT32, _name)
 204 #define _cfg_policy_ARRAY_CB(_name) _cfg_policy(ARRAY, _name)
 205 #define _cfg_policy_STRING_CB(_name) _cfg_policy(STRING, _name)
 206 #define _cfg(_type, _name) _cfg_policy_##_type(_name)
 207         __config_items,
 208 #undef _cfg
 209 };
 210
 211 static const struct cfg_item config_data[__CFG_MAX] = {
 212 #define _cfg_data_BOOL(_name) .ptr.BOOL = &config._name
 213 #define _cfg_data_U32(_name) .ptr.U32 = &config._name
 214 #define _cfg_data_I32(_name) .ptr.I32 = &config._name
 215 #define _cfg_data_ARRAY_CB(_name) .ptr.CB = { .set = config_set_##_name, .get = config_get_##_name }
 216 #define _cfg_data_STRING_CB(_name) .ptr.CB = { .set = config_set_##_name, .get = config_get_##_name }
 217 #define _cfg(_type, _name) [CFG_##_name] = { .type = CFG_##_type, _cfg_data_##_type(_name) }
 218         __config_items,
 219 #undef _cfg
 220 };
 221
 222 static int
 223 usteer_ubus_get_config(struct ubus_context *ctx, struct ubus_object *obj,
 224                       struct ubus_request_data *req, const char *method,
 225                       struct blob_attr *msg)
 226 {
 227         int i;
 228
 229         blob_buf_init(&b, 0);
 230         for (i = 0; i < __CFG_MAX; i++) {
 231                 switch(config_data[i].type) {
 232                 case CFG_BOOL:
 233                         blobmsg_add_u8(&b, config_policy[i].name,
 234                                         *config_data[i].ptr.BOOL);
 235                         break;
 236                 case CFG_I32:
 237                 case CFG_U32:
 238                         blobmsg_add_u32(&b, config_policy[i].name,
 239                                         *config_data[i].ptr.U32);
 240                         break;
 241                 case CFG_ARRAY_CB:
 242                 case CFG_STRING_CB:
 243                         config_data[i].ptr.CB.get(&b);
 244                         break;
 245                 }
 246         }
 247         ubus_send_reply(ctx, req, b.head);
 248         return 0;
 249 }
 250
 251 static int
 252 usteer_ubus_set_config(struct ubus_context *ctx, struct ubus_object *obj,
 253                       struct ubus_request_data *req, const char *method,
 254                       struct blob_attr *msg)
 255 {
 256         struct blob_attr *tb[__CFG_MAX];
 257         int i;
 258
 259         if (!strcmp(method, "set_config"))
 260                 usteer_init_defaults();
 261
 262         blobmsg_parse(config_policy, __CFG_MAX, tb, blob_data(msg), blob_len(msg));
 263         for (i = 0; i < __CFG_MAX; i++) {
 264                 switch(config_data[i].type) {
 265                 case CFG_BOOL:
 266                         if (!tb[i])
 267                                 continue;
 268
 269                         *config_data[i].ptr.BOOL = blobmsg_get_u8(tb[i]);
 270                         break;
 271                 case CFG_I32:
 272                 case CFG_U32:
 273                         if (!tb[i])
 274                                 continue;
 275
 276                         *config_data[i].ptr.U32 = blobmsg_get_u32(tb[i]);
 277                         break;
 278                 case CFG_ARRAY_CB:
 279                 case CFG_STRING_CB:
 280                         config_data[i].ptr.CB.set(tb[i]);
 281                         break;
 282                 }
 283         }
 284
 285         usteer_interface_init();
 286
 287         return 0;
 288 }
 289
 290 void usteer_dump_node(struct blob_buf *buf, struct usteer_node *node)
 291 {
 292         void *c, *roam_events;
 293
 294         c = blobmsg_open_table(buf, usteer_node_name(node));
 295         blobmsg_printf(buf, "bssid", MAC_ADDR_FMT, MAC_ADDR_DATA(node->bssid));
 296         blobmsg_add_string(buf, "ssid", node->ssid);
 297         blobmsg_add_u32(buf, "freq", node->freq);
 298         blobmsg_add_u32(buf, "n_assoc", node->n_assoc);
 299         blobmsg_add_u32(buf, "noise", node->noise);
 300         blobmsg_add_u32(buf, "load", node->load);
 301         blobmsg_add_u32(buf, "max_assoc", node->max_assoc);
 302
 303         roam_events = blobmsg_open_table(buf, "roam_events");
 304         blobmsg_add_u32(buf, "source", node->roam_events.source);
 305         blobmsg_add_u32(buf, "target", node->roam_events.target);
 306         blobmsg_close_table(buf, roam_events);
 307
 308         if (node->rrm_nr)
 309                 blobmsg_add_field(buf, BLOBMSG_TYPE_ARRAY, "rrm_nr",
 310                                   blobmsg_data(node->rrm_nr),
 311                                   blobmsg_data_len(node->rrm_nr));
 312         if (node->node_info)
 313                 blobmsg_add_field(buf, BLOBMSG_TYPE_TABLE, "node_info",
 314                                   blob_data(node->node_info),
 315                                   blob_len(node->node_info));
 316
 317         blobmsg_close_table(buf, c);
 318 }
 319
 320 void usteer_dump_host(struct blob_buf *buf, struct usteer_remote_host *host)
 321 {
 322         void *c;
 323
 324         c = blobmsg_open_table(buf, host->addr);
 325         blobmsg_add_u32(buf, "id", (uint32_t)(uintptr_t)host->avl.key);
 326         if (host->host_info)
 327                 blobmsg_add_field(buf, BLOBMSG_TYPE_TABLE, "host_info",
 328                                   blobmsg_data(host->host_info),
 329                                   blobmsg_len(host->host_info));
 330         blobmsg_close_table(buf, c);
 331 }
 332
 333 static int
 334 usteer_ubus_local_info(struct ubus_context *ctx, struct ubus_object *obj,
 335                       struct ubus_request_data *req, const char *method,
 336                       struct blob_attr *msg)
 337 {
 338         struct usteer_node *node;
 339
 340         blob_buf_init(&b, 0);
 341
 342         for_each_local_node(node)
 343                 usteer_dump_node(&b, node);
 344
 345         ubus_send_reply(ctx, req, b.head);
 346
 347         return 0;
 348 }
 349
 350 static int
 351 usteer_ubus_remote_hosts(struct ubus_context *ctx, struct ubus_object *obj,
 352                          struct ubus_request_data *req, const char *method,
 353                          struct blob_attr *msg)
 354 {
 355         struct usteer_remote_host *host;
 356
 357         blob_buf_init(&b, 0);
 358
 359         avl_for_each_element(&remote_hosts, host, avl)
 360                 usteer_dump_host(&b, host);
 361
 362         ubus_send_reply(ctx, req, b.head);
 363
 364         return 0;
 365 }
 366
 367 static int
 368 usteer_ubus_remote_info(struct ubus_context *ctx, struct ubus_object *obj,
 369                        struct ubus_request_data *req, const char *method,
 370                        struct blob_attr *msg)
 371 {
 372         struct usteer_remote_node *rn;
 373
 374         blob_buf_init(&b, 0);
 375
 376         for_each_remote_node(rn)
 377                 usteer_dump_node(&b, &rn->node);
 378
 379         ubus_send_reply(ctx, req, b.head);
 380
 381         return 0;
 382 }
 383
 384 static int
 385 usteer_ubus_get_connected_clients(struct ubus_context *ctx, struct ubus_object *obj,
 386                                   struct ubus_request_data *req, const char *method,
 387                                   struct blob_attr *msg)
 388 {
 389         struct usteer_measurement_report *mr;
 390         struct usteer_node *node;
 391         struct sta_info *si;
 392         void *n, *s, *t, *a;
 393
 394         blob_buf_init(&b, 0);
 395
 396         for_each_local_node(node) {
 397                 n = blobmsg_open_table(&b, usteer_node_name(node));
 398
 399                 list_for_each_entry(si, &node->sta_info, node_list) {
 400                         if (si->connected != STA_CONNECTED)
 401                                 continue;
 402
 403                         s = blobmsg_open_table_mac(&b, si->sta->addr);
 404                         blobmsg_add_u32(&b, "signal", si->signal);
 405                         blobmsg_add_u64(&b, "created", si->created);
 406                         blobmsg_add_u64(&b, "seen", si->seen);
 407                         blobmsg_add_u64(&b, "connected_since", si->connected_since);
 408                         blobmsg_add_u64(&b, "last_connected", si->last_connected);
 409
 410                         t = blobmsg_open_table(&b, "snr-kick");
 411                         blobmsg_add_u32(&b, "seen-below", si->below_min_snr);
 412                         blobmsg_close_table(&b, t);
 413
 414                         t = blobmsg_open_table(&b, "load-kick");
 415                         blobmsg_add_u32(&b, "count", si->kick_count);
 416                         blobmsg_close_table(&b, t);
 417
 418                         t = blobmsg_open_table(&b, "roam-state-machine");
 419                         blobmsg_add_u32(&b, "tries", si->roam_tries);
 420                         blobmsg_add_u64(&b, "event", si->roam_event);
 421                         blobmsg_add_u64(&b, "kick", si->roam_kick);
 422                         blobmsg_add_u64(&b, "scan_start", si->roam_scan_start);
 423                         blobmsg_add_u64(&b, "scan_timeout_start", si->roam_scan_timeout_start);
 424                         blobmsg_close_table(&b, t);
 425
 426                         t = blobmsg_open_table(&b, "bss-transition-response");
 427                         blobmsg_add_u32(&b, "status-code", si->bss_transition_response.status_code);
 428                         blobmsg_add_u64(&b, "timestamp", si->bss_transition_response.timestamp);
 429                         blobmsg_close_table(&b, t);
 430
 431                         /* Beacon measurement modes */
 432                         a = blobmsg_open_array(&b, "beacon-measurement-modes");
 433                         if (usteer_sta_supports_beacon_measurement_mode(si, BEACON_MEASUREMENT_PASSIVE))
 434                                 blobmsg_add_string(&b, "", "PASSIVE");
 435                         if (usteer_sta_supports_beacon_measurement_mode(si, BEACON_MEASUREMENT_ACTIVE))
 436                                 blobmsg_add_string(&b, "", "ACTIVE");
 437                         if (usteer_sta_supports_beacon_measurement_mode(si, BEACON_MEASUREMENT_TABLE))
 438                                 blobmsg_add_string(&b, "", "TABLE");
 439                         blobmsg_close_array(&b, a);
 440
 441                         /* Link-Measurement support */
 442                         blobmsg_add_u8(&b, "link-measurement", usteer_sta_supports_link_measurement(si));
 443
 444                         /* BSS-Transition support */
 445                         blobmsg_add_u8(&b, "bss-transition-management", si->bss_transition);
 446
 447                         /* MBO support */
 448                         blobmsg_add_u8(&b, "multi-band-operation", si->mbo);
 449
 450                         /* Measurements */
 451                         a = blobmsg_open_array(&b, "measurements");
 452                         list_for_each_entry(mr, &si->sta->measurements, sta_list) {
 453                                 t = blobmsg_open_table(&b, "");
 454                                 blobmsg_add_string(&b, "node", usteer_node_name(mr->node));
 455                                 blobmsg_add_u32(&b, "rcpi", mr->rcpi);
 456                                 blobmsg_add_u32(&b, "rsni", mr->rsni);
 457                                 blobmsg_add_u32(&b, "rssi", usteer_measurement_get_rssi(mr));
 458                                 blobmsg_add_u64(&b, "timestamp", mr->timestamp);
 459                                 blobmsg_close_table(&b, t);
 460                         }
 461                         blobmsg_close_array(&b, a);
 462
 463                         blobmsg_close_table(&b, s);
 464                 }
 465
 466                 blobmsg_close_table(&b, n);
 467         }
 468
 469         ubus_send_reply(ctx, req, b.head);
 470
 471         return 0;
 472 }
 473
 474 enum {
 475         NODE_DATA_NODE,
 476         NODE_DATA_VALUES,
 477         __NODE_DATA_MAX,
 478 };
 479
 480 static const struct blobmsg_policy set_node_data_policy[] = {
 481         [NODE_DATA_NODE] = { "node", BLOBMSG_TYPE_STRING },
 482         [NODE_DATA_VALUES] = { "data", BLOBMSG_TYPE_TABLE },
 483 };
 484
 485 static const struct blobmsg_policy del_node_data_policy[] = {
 486         [NODE_DATA_NODE] = { "node", BLOBMSG_TYPE_STRING },
 487         [NODE_DATA_VALUES] = { "names", BLOBMSG_TYPE_ARRAY },
 488 };
 489
 490 static void
 491 usteer_update_kvlist_data(struct kvlist *kv, struct blob_attr *data,
 492                           bool delete)
 493 {
 494         struct blob_attr *cur;
 495         int rem;
 496
 497         blobmsg_for_each_attr(cur, data, rem) {
 498                 if (delete)
 499                         kvlist_delete(kv, blobmsg_get_string(cur));
 500                 else
 501                         kvlist_set(kv, blobmsg_name(cur), cur);
 502         }
 503 }
 504
 505 static void
 506 usteer_update_kvlist_blob(struct blob_attr **dest, struct kvlist *kv)
 507 {
 508         struct blob_attr *val;
 509         const char *name;
 510
 511         blob_buf_init(&b, 0);
 512         kvlist_for_each(kv, name, val)
 513                 blobmsg_add_field(&b, blobmsg_type(val), name,
 514                                   blobmsg_data(val), blobmsg_len(val));
 515
 516         val = b.head;
 517         if (!blobmsg_len(val))
 518                 val = NULL;
 519
 520         usteer_node_set_blob(dest, val);
 521 }
 522
 523 static int
 524 usteer_ubus_update_node_data(struct ubus_context *ctx, struct ubus_object *obj,
 525                              struct ubus_request_data *req, const char *method,
 526                              struct blob_attr *msg)
 527 {
 528         const struct blobmsg_policy *policy;
 529         struct blob_attr *tb[__NODE_DATA_MAX];
 530         struct usteer_local_node *ln;
 531         struct blob_attr *val;
 532         const char *name;
 533         bool delete;
 534
 535         delete = !strncmp(method, "del", 3);
 536         policy = delete ? del_node_data_policy : set_node_data_policy;
 537
 538         blobmsg_parse(policy, __NODE_DATA_MAX, tb, blob_data(msg), blob_len(msg));
 539         if (!tb[NODE_DATA_NODE] || !tb[NODE_DATA_VALUES])
 540                 return UBUS_STATUS_INVALID_ARGUMENT;
 541
 542         name = blobmsg_get_string(tb[NODE_DATA_NODE]);
 543         val = tb[NODE_DATA_VALUES];
 544         if (delete && blobmsg_check_array(val, BLOBMSG_TYPE_STRING) < 0)
 545                 return UBUS_STATUS_INVALID_ARGUMENT;
 546
 547         if (strcmp(name, "*") != 0) {
 548                 ln = avl_find_element(&local_nodes, name, ln, node.avl);
 549                 if (!ln)
 550                         return UBUS_STATUS_NOT_FOUND;
 551
 552                 usteer_update_kvlist_data(&ln->node_info, val, delete);
 553                 usteer_update_kvlist_blob(&ln->node.node_info, &ln->node_info);
 554
 555                 return 0;
 556         }
 557
 558         usteer_update_kvlist_data(&host_info, val, delete);
 559         usteer_update_kvlist_blob(&host_info_blob, &host_info);
 560
 561         return 0;
 562 }
 563
 564 static const struct ubus_method usteer_methods[] = {
 565         UBUS_METHOD_NOARG("local_info", usteer_ubus_local_info),
 566         UBUS_METHOD_NOARG("remote_hosts", usteer_ubus_remote_hosts),
 567         UBUS_METHOD_NOARG("remote_info", usteer_ubus_remote_info),
 568         UBUS_METHOD_NOARG("connected_clients", usteer_ubus_get_connected_clients),
 569         UBUS_METHOD_NOARG("get_clients", usteer_ubus_get_clients),
 570         UBUS_METHOD("get_client_info", usteer_ubus_get_client_info, client_arg),
 571         UBUS_METHOD_NOARG("get_config", usteer_ubus_get_config),
 572         UBUS_METHOD("set_config", usteer_ubus_set_config, config_policy),
 573         UBUS_METHOD("update_config", usteer_ubus_set_config, config_policy),
 574         UBUS_METHOD("set_node_data", usteer_ubus_update_node_data, set_node_data_policy),
 575         UBUS_METHOD("delete_node_data", usteer_ubus_update_node_data, del_node_data_policy),
 576 };
 577
 578 static struct ubus_object_type usteer_obj_type =
 579         UBUS_OBJECT_TYPE("usteer", usteer_methods);
 580
 581 struct ubus_object usteer_obj = {
 582         .name = "usteer",
 583         .type = &usteer_obj_type,
 584         .methods = usteer_methods,
 585         .n_methods = ARRAY_SIZE(usteer_methods),
 586 };
 587
 588 static bool
 589 usteer_add_nr_entry(struct usteer_node *ln, struct usteer_node *node)
 590 {
 591         struct blobmsg_policy policy[3] = {
 592                 { .type = BLOBMSG_TYPE_STRING },
 593                 { .type = BLOBMSG_TYPE_STRING },
 594                 { .type = BLOBMSG_TYPE_STRING },
 595         };
 596         struct blob_attr *tb[3];
 597
 598         if (!node->rrm_nr)
 599                 return false;
 600
 601         if (strcmp(ln->ssid, node->ssid) != 0)
 602                 return false;
 603
 604         if (!usteer_policy_node_below_max_assoc(node))
 605                 return false;
 606
 607         blobmsg_parse_array(policy, ARRAY_SIZE(tb), tb,
 608                             blobmsg_data(node->rrm_nr),
 609                             blobmsg_data_len(node->rrm_nr));
 610         if (!tb[2])
 611                 return false;
 612
 613         blobmsg_add_field(&b, BLOBMSG_TYPE_STRING, "",
 614                           blobmsg_data(tb[2]),
 615                           blobmsg_data_len(tb[2]));
 616
 617         return true;
 618 }
 619
 620 static void
 621 usteer_ubus_disassoc_add_neighbor(struct sta_info *si, struct usteer_node *node)
 622 {
 623         void *c;
 624
 625         c = blobmsg_open_array(&b, "neighbors");
 626         usteer_add_nr_entry(si->node, node);
 627         blobmsg_close_array(&b, c);
 628 }
 629
 630 static void
 631 usteer_ubus_disassoc_add_neighbors(struct sta_info *si)
 632 {
 633         struct usteer_node *node, *last_remote_neighbor = NULL;
 634         int i = 0;
 635         void *c;
 636
 637         c = blobmsg_open_array(&b, "neighbors");
 638         for_each_local_node(node) {
 639                 if (i >= config.max_neighbor_reports)
 640                         break;
 641                 if (si->node == node)
 642                         continue;
 643                 if (usteer_add_nr_entry(si->node, node))
 644                         i++;
 645         }
 646
 647         while (i < config.max_neighbor_reports) {
 648                 node = usteer_node_get_next_neighbor(si->node, last_remote_neighbor);
 649                 if (!node) {
 650                         /* No more nodes available */
 651                         break;
 652                 }
 653
 654                 last_remote_neighbor = node;
 655                 if (usteer_add_nr_entry(si->node, node))
 656                         i++;
 657         }
 658         blobmsg_close_array(&b, c);
 659 }
 660
 661 int usteer_ubus_bss_transition_request(struct sta_info *si,
 662                                        uint8_t dialog_token,
 663                                        bool disassoc_imminent,
 664                                        bool abridged,
 665                                        uint8_t validity_period,
 666                                        struct usteer_node *target_node)
 667 {
 668         struct usteer_local_node *ln = container_of(si->node, struct usteer_local_node, node);
 669
 670         blob_buf_init(&b, 0);
 671         blobmsg_printf(&b, "addr", MAC_ADDR_FMT, MAC_ADDR_DATA(si->sta->addr));
 672         blobmsg_add_u32(&b, "dialog_token", dialog_token);
 673         blobmsg_add_u8(&b, "disassociation_imminent", disassoc_imminent);
 674         blobmsg_add_u8(&b, "abridged", abridged);
 675         blobmsg_add_u32(&b, "validity_period", validity_period);
 676         if (!target_node) {
 677                 usteer_ubus_disassoc_add_neighbors(si);
 678         } else {
 679                 usteer_ubus_disassoc_add_neighbor(si, target_node);
 680         }
 681         return ubus_invoke(ubus_ctx, ln->obj_id, "bss_transition_request", b.head, NULL, 0, 100);
 682 }
 683
 684 int usteer_ubus_band_steering_request(struct sta_info *si)
 685 {
 686         struct usteer_local_node *ln = container_of(si->node, struct usteer_local_node, node);
 687         struct usteer_node *node;
 688         void *c;
 689
 690         blob_buf_init(&b, 0);
 691         blobmsg_printf(&b, "addr", MAC_ADDR_FMT, MAC_ADDR_DATA(si->sta->addr));
 692         blobmsg_add_u32(&b, "dialog_token", 0);
 693         blobmsg_add_u8(&b, "disassociation_imminent", false);
 694         blobmsg_add_u8(&b, "abridged", false);
 695         blobmsg_add_u32(&b, "validity_period", 100);
 696
 697         c = blobmsg_open_array(&b, "neighbors");
 698         for_each_local_node(node) {
 699                 if (!usteer_band_steering_is_target(ln, node))
 700                         continue;
 701
 702                 usteer_add_nr_entry(si->node, node);
 703         }
 704         blobmsg_close_array(&b, c);
 705
 706         return ubus_invoke(ubus_ctx, ln->obj_id, "bss_transition_request", b.head, NULL, 0, 100);
 707 }
 708
 709 int usteer_ubus_trigger_link_measurement(struct sta_info *si)
 710 {
 711         struct usteer_local_node *ln = container_of(si->node, struct usteer_local_node, node);
 712
 713         if (!usteer_sta_supports_link_measurement(si))
 714                 return 0;
 715
 716         blob_buf_init(&b, 0);
 717         blobmsg_printf(&b, "addr", MAC_ADDR_FMT, MAC_ADDR_DATA(si->sta->addr));
 718         blobmsg_add_u32(&b, "tx-power-used", 5);
 719         blobmsg_add_u32(&b, "tx-power-max", 10);
 720         return ubus_invoke(ubus_ctx, ln->obj_id, "link_measurement_req", b.head, NULL, 0, 100);
 721 }
 722
 723 int usteer_ubus_trigger_client_scan(struct sta_info *si)
 724 {
 725         struct usteer_local_node *ln = container_of(si->node, struct usteer_local_node, node);
 726
 727         if (!usteer_sta_supports_beacon_measurement_mode(si, BEACON_MEASUREMENT_ACTIVE)) {
 728                 MSG(DEBUG, "STA does not support beacon measurement sta=" MAC_ADDR_FMT "\n", MAC_ADDR_DATA(si->sta->addr));
 729                 return 0;
 730         }
 731
 732         si->scan_band = !si->scan_band;
 733
 734         blob_buf_init(&b, 0);
 735         blobmsg_printf(&b, "addr", MAC_ADDR_FMT, MAC_ADDR_DATA(si->sta->addr));
 736         blobmsg_add_string(&b, "ssid", si->node->ssid);
 737         blobmsg_add_u32(&b, "mode", BEACON_MEASUREMENT_ACTIVE);
 738         blobmsg_add_u32(&b, "duration", config.roam_scan_interval / 100);
 739         blobmsg_add_u32(&b, "channel", 0);
 740         blobmsg_add_u32(&b, "op_class", si->scan_band ? 1 : 12);
 741         return ubus_invoke(ubus_ctx, ln->obj_id, "rrm_beacon_req", b.head, NULL, 0, 100);
 742 }
 743
 744 void usteer_ubus_kick_client(struct sta_info *si)
 745 {
 746         struct usteer_local_node *ln = container_of(si->node, struct usteer_local_node, node);
 747
 748         blob_buf_init(&b, 0);
 749         blobmsg_printf(&b, "addr", MAC_ADDR_FMT, MAC_ADDR_DATA(si->sta->addr));
 750         blobmsg_add_u32(&b, "reason", config.load_kick_reason_code);
 751         blobmsg_add_u8(&b, "deauth", 1);
 752         ubus_invoke(ubus_ctx, ln->obj_id, "del_client", b.head, NULL, 0, 100);
 753         usteer_sta_disconnected(si);
 754         si->roam_kick = current_time;
 755 }
 756
 757 void usteer_ubus_init(struct ubus_context *ctx)
 758 {
 759         ubus_add_object(ctx, &usteer_obj);
 760 }