1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2015 Intel Deutschland GmbH 4 * Copyright (C) 2022-2024 Intel Corporation 5 */ 6 #include <net/mac80211.h> 7 #include "ieee80211_i.h" 8 #include "trace.h" 9 #include "driver-ops.h" 10 #include "debugfs_sta.h" 11 #include "debugfs_netdev.h" 12 13 int drv_start(struct ieee80211_local *local) 14 { 15 int ret; 16 17 might_sleep(); 18 lockdep_assert_wiphy(local->hw.wiphy); 19 20 if (WARN_ON(local->started)) 21 return -EALREADY; 22 23 trace_drv_start(local); 24 local->started = true; 25 /* allow rx frames */ 26 smp_mb(); 27 ret = local->ops->start(&local->hw); 28 trace_drv_return_int(local, ret); 29 30 if (ret) 31 local->started = false; 32 33 return ret; 34 } 35 36 void drv_stop(struct ieee80211_local *local) 37 { 38 might_sleep(); 39 lockdep_assert_wiphy(local->hw.wiphy); 40 41 if (WARN_ON(!local->started)) 42 return; 43 44 trace_drv_stop(local); 45 local->ops->stop(&local->hw); 46 trace_drv_return_void(local); 47 48 /* sync away all work on the tasklet before clearing started */ 49 tasklet_disable(&local->tasklet); 50 tasklet_enable(&local->tasklet); 51 52 barrier(); 53 54 local->started = false; 55 } 56 57 int drv_add_interface(struct ieee80211_local *local, 58 struct ieee80211_sub_if_data *sdata) 59 { 60 int ret; 61 62 might_sleep(); 63 lockdep_assert_wiphy(local->hw.wiphy); 64 65 if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 66 (sdata->vif.type == NL80211_IFTYPE_MONITOR && 67 !ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && 68 !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)))) 69 return -EINVAL; 70 71 trace_drv_add_interface(local, sdata); 72 ret = local->ops->add_interface(&local->hw, &sdata->vif); 73 trace_drv_return_int(local, ret); 74 75 if (ret) 76 return ret; 77 78 if (!(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) { 79 sdata->flags |= IEEE80211_SDATA_IN_DRIVER; 80 81 drv_vif_add_debugfs(local, sdata); 82 /* initially vif is not MLD */ 83 ieee80211_link_debugfs_drv_add(&sdata->deflink); 84 } 85 86 return 0; 87 } 88 89 int drv_change_interface(struct ieee80211_local *local, 90 struct ieee80211_sub_if_data *sdata, 91 enum nl80211_iftype type, bool p2p) 92 { 93 int ret; 94 95 might_sleep(); 96 lockdep_assert_wiphy(local->hw.wiphy); 97 98 if (!check_sdata_in_driver(sdata)) 99 return -EIO; 100 101 trace_drv_change_interface(local, sdata, type, p2p); 102 ret = local->ops->change_interface(&local->hw, &sdata->vif, type, p2p); 103 trace_drv_return_int(local, ret); 104 return ret; 105 } 106 107 void drv_remove_interface(struct ieee80211_local *local, 108 struct ieee80211_sub_if_data *sdata) 109 { 110 might_sleep(); 111 lockdep_assert_wiphy(local->hw.wiphy); 112 113 if (!check_sdata_in_driver(sdata)) 114 return; 115 116 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 117 118 /* Remove driver debugfs entries */ 119 ieee80211_debugfs_recreate_netdev(sdata, sdata->vif.valid_links); 120 121 trace_drv_remove_interface(local, sdata); 122 local->ops->remove_interface(&local->hw, &sdata->vif); 123 trace_drv_return_void(local); 124 } 125 126 __must_check 127 int drv_sta_state(struct ieee80211_local *local, 128 struct ieee80211_sub_if_data *sdata, 129 struct sta_info *sta, 130 enum ieee80211_sta_state old_state, 131 enum ieee80211_sta_state new_state) 132 { 133 int ret = 0; 134 135 might_sleep(); 136 lockdep_assert_wiphy(local->hw.wiphy); 137 138 sdata = get_bss_sdata(sdata); 139 if (!check_sdata_in_driver(sdata)) 140 return -EIO; 141 142 trace_drv_sta_state(local, sdata, &sta->sta, old_state, new_state); 143 if (local->ops->sta_state) { 144 ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta, 145 old_state, new_state); 146 } else if (old_state == IEEE80211_STA_AUTH && 147 new_state == IEEE80211_STA_ASSOC) { 148 ret = drv_sta_add(local, sdata, &sta->sta); 149 if (ret == 0) { 150 sta->uploaded = true; 151 if (rcu_access_pointer(sta->sta.rates)) 152 drv_sta_rate_tbl_update(local, sdata, &sta->sta); 153 } 154 } else if (old_state == IEEE80211_STA_ASSOC && 155 new_state == IEEE80211_STA_AUTH) { 156 drv_sta_remove(local, sdata, &sta->sta); 157 } 158 trace_drv_return_int(local, ret); 159 return ret; 160 } 161 162 __must_check 163 int drv_sta_set_txpwr(struct ieee80211_local *local, 164 struct ieee80211_sub_if_data *sdata, 165 struct sta_info *sta) 166 { 167 int ret = -EOPNOTSUPP; 168 169 might_sleep(); 170 lockdep_assert_wiphy(local->hw.wiphy); 171 172 sdata = get_bss_sdata(sdata); 173 if (!check_sdata_in_driver(sdata)) 174 return -EIO; 175 176 trace_drv_sta_set_txpwr(local, sdata, &sta->sta); 177 if (local->ops->sta_set_txpwr) 178 ret = local->ops->sta_set_txpwr(&local->hw, &sdata->vif, 179 &sta->sta); 180 trace_drv_return_int(local, ret); 181 return ret; 182 } 183 184 void drv_sta_rc_update(struct ieee80211_local *local, 185 struct ieee80211_sub_if_data *sdata, 186 struct ieee80211_sta *sta, u32 changed) 187 { 188 sdata = get_bss_sdata(sdata); 189 if (!check_sdata_in_driver(sdata)) 190 return; 191 192 WARN_ON(changed & IEEE80211_RC_SUPP_RATES_CHANGED && 193 (sdata->vif.type != NL80211_IFTYPE_ADHOC && 194 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)); 195 196 trace_drv_sta_rc_update(local, sdata, sta, changed); 197 if (local->ops->sta_rc_update) 198 local->ops->sta_rc_update(&local->hw, &sdata->vif, 199 sta, changed); 200 201 trace_drv_return_void(local); 202 } 203 204 int drv_conf_tx(struct ieee80211_local *local, 205 struct ieee80211_link_data *link, u16 ac, 206 const struct ieee80211_tx_queue_params *params) 207 { 208 struct ieee80211_sub_if_data *sdata = link->sdata; 209 int ret = -EOPNOTSUPP; 210 211 might_sleep(); 212 lockdep_assert_wiphy(local->hw.wiphy); 213 214 if (!check_sdata_in_driver(sdata)) 215 return -EIO; 216 217 if (!ieee80211_vif_link_active(&sdata->vif, link->link_id)) 218 return 0; 219 220 if (params->cw_min == 0 || params->cw_min > params->cw_max) { 221 /* 222 * If we can't configure hardware anyway, don't warn. We may 223 * never have initialized the CW parameters. 224 */ 225 WARN_ONCE(local->ops->conf_tx, 226 "%s: invalid CW_min/CW_max: %d/%d\n", 227 sdata->name, params->cw_min, params->cw_max); 228 return -EINVAL; 229 } 230 231 trace_drv_conf_tx(local, sdata, link->link_id, ac, params); 232 if (local->ops->conf_tx) 233 ret = local->ops->conf_tx(&local->hw, &sdata->vif, 234 link->link_id, ac, params); 235 trace_drv_return_int(local, ret); 236 return ret; 237 } 238 239 u64 drv_get_tsf(struct ieee80211_local *local, 240 struct ieee80211_sub_if_data *sdata) 241 { 242 u64 ret = -1ULL; 243 244 might_sleep(); 245 lockdep_assert_wiphy(local->hw.wiphy); 246 247 if (!check_sdata_in_driver(sdata)) 248 return ret; 249 250 trace_drv_get_tsf(local, sdata); 251 if (local->ops->get_tsf) 252 ret = local->ops->get_tsf(&local->hw, &sdata->vif); 253 trace_drv_return_u64(local, ret); 254 return ret; 255 } 256 257 void drv_set_tsf(struct ieee80211_local *local, 258 struct ieee80211_sub_if_data *sdata, 259 u64 tsf) 260 { 261 might_sleep(); 262 lockdep_assert_wiphy(local->hw.wiphy); 263 264 if (!check_sdata_in_driver(sdata)) 265 return; 266 267 trace_drv_set_tsf(local, sdata, tsf); 268 if (local->ops->set_tsf) 269 local->ops->set_tsf(&local->hw, &sdata->vif, tsf); 270 trace_drv_return_void(local); 271 } 272 273 void drv_offset_tsf(struct ieee80211_local *local, 274 struct ieee80211_sub_if_data *sdata, 275 s64 offset) 276 { 277 might_sleep(); 278 lockdep_assert_wiphy(local->hw.wiphy); 279 280 if (!check_sdata_in_driver(sdata)) 281 return; 282 283 trace_drv_offset_tsf(local, sdata, offset); 284 if (local->ops->offset_tsf) 285 local->ops->offset_tsf(&local->hw, &sdata->vif, offset); 286 trace_drv_return_void(local); 287 } 288 289 void drv_reset_tsf(struct ieee80211_local *local, 290 struct ieee80211_sub_if_data *sdata) 291 { 292 might_sleep(); 293 lockdep_assert_wiphy(local->hw.wiphy); 294 295 if (!check_sdata_in_driver(sdata)) 296 return; 297 298 trace_drv_reset_tsf(local, sdata); 299 if (local->ops->reset_tsf) 300 local->ops->reset_tsf(&local->hw, &sdata->vif); 301 trace_drv_return_void(local); 302 } 303 304 int drv_assign_vif_chanctx(struct ieee80211_local *local, 305 struct ieee80211_sub_if_data *sdata, 306 struct ieee80211_bss_conf *link_conf, 307 struct ieee80211_chanctx *ctx) 308 { 309 int ret = 0; 310 311 might_sleep(); 312 lockdep_assert_wiphy(local->hw.wiphy); 313 314 if (!check_sdata_in_driver(sdata)) 315 return -EIO; 316 317 if (!ieee80211_vif_link_active(&sdata->vif, link_conf->link_id)) 318 return 0; 319 320 trace_drv_assign_vif_chanctx(local, sdata, link_conf, ctx); 321 if (local->ops->assign_vif_chanctx) { 322 WARN_ON_ONCE(!ctx->driver_present); 323 ret = local->ops->assign_vif_chanctx(&local->hw, 324 &sdata->vif, 325 link_conf, 326 &ctx->conf); 327 } 328 trace_drv_return_int(local, ret); 329 330 return ret; 331 } 332 333 void drv_unassign_vif_chanctx(struct ieee80211_local *local, 334 struct ieee80211_sub_if_data *sdata, 335 struct ieee80211_bss_conf *link_conf, 336 struct ieee80211_chanctx *ctx) 337 { 338 might_sleep(); 339 lockdep_assert_wiphy(local->hw.wiphy); 340 341 if (!check_sdata_in_driver(sdata)) 342 return; 343 344 if (!ieee80211_vif_link_active(&sdata->vif, link_conf->link_id)) 345 return; 346 347 trace_drv_unassign_vif_chanctx(local, sdata, link_conf, ctx); 348 if (local->ops->unassign_vif_chanctx) { 349 WARN_ON_ONCE(!ctx->driver_present); 350 local->ops->unassign_vif_chanctx(&local->hw, 351 &sdata->vif, 352 link_conf, 353 &ctx->conf); 354 } 355 trace_drv_return_void(local); 356 } 357 358 int drv_switch_vif_chanctx(struct ieee80211_local *local, 359 struct ieee80211_vif_chanctx_switch *vifs, 360 int n_vifs, enum ieee80211_chanctx_switch_mode mode) 361 { 362 int ret = 0; 363 int i; 364 365 might_sleep(); 366 lockdep_assert_wiphy(local->hw.wiphy); 367 368 if (!local->ops->switch_vif_chanctx) 369 return -EOPNOTSUPP; 370 371 for (i = 0; i < n_vifs; i++) { 372 struct ieee80211_chanctx *new_ctx = 373 container_of(vifs[i].new_ctx, 374 struct ieee80211_chanctx, 375 conf); 376 struct ieee80211_chanctx *old_ctx = 377 container_of(vifs[i].old_ctx, 378 struct ieee80211_chanctx, 379 conf); 380 381 WARN_ON_ONCE(!old_ctx->driver_present); 382 WARN_ON_ONCE((mode == CHANCTX_SWMODE_SWAP_CONTEXTS && 383 new_ctx->driver_present) || 384 (mode == CHANCTX_SWMODE_REASSIGN_VIF && 385 !new_ctx->driver_present)); 386 } 387 388 trace_drv_switch_vif_chanctx(local, vifs, n_vifs, mode); 389 ret = local->ops->switch_vif_chanctx(&local->hw, 390 vifs, n_vifs, mode); 391 trace_drv_return_int(local, ret); 392 393 if (!ret && mode == CHANCTX_SWMODE_SWAP_CONTEXTS) { 394 for (i = 0; i < n_vifs; i++) { 395 struct ieee80211_chanctx *new_ctx = 396 container_of(vifs[i].new_ctx, 397 struct ieee80211_chanctx, 398 conf); 399 struct ieee80211_chanctx *old_ctx = 400 container_of(vifs[i].old_ctx, 401 struct ieee80211_chanctx, 402 conf); 403 404 new_ctx->driver_present = true; 405 old_ctx->driver_present = false; 406 } 407 } 408 409 return ret; 410 } 411 412 int drv_ampdu_action(struct ieee80211_local *local, 413 struct ieee80211_sub_if_data *sdata, 414 struct ieee80211_ampdu_params *params) 415 { 416 int ret = -EOPNOTSUPP; 417 418 might_sleep(); 419 lockdep_assert_wiphy(local->hw.wiphy); 420 421 sdata = get_bss_sdata(sdata); 422 if (!check_sdata_in_driver(sdata)) 423 return -EIO; 424 425 trace_drv_ampdu_action(local, sdata, params); 426 427 if (local->ops->ampdu_action) 428 ret = local->ops->ampdu_action(&local->hw, &sdata->vif, params); 429 430 trace_drv_return_int(local, ret); 431 432 return ret; 433 } 434 435 void drv_link_info_changed(struct ieee80211_local *local, 436 struct ieee80211_sub_if_data *sdata, 437 struct ieee80211_bss_conf *info, 438 int link_id, u64 changed) 439 { 440 might_sleep(); 441 lockdep_assert_wiphy(local->hw.wiphy); 442 443 if (WARN_ON_ONCE(changed & (BSS_CHANGED_BEACON | 444 BSS_CHANGED_BEACON_ENABLED) && 445 sdata->vif.type != NL80211_IFTYPE_AP && 446 sdata->vif.type != NL80211_IFTYPE_ADHOC && 447 sdata->vif.type != NL80211_IFTYPE_MESH_POINT && 448 sdata->vif.type != NL80211_IFTYPE_OCB)) 449 return; 450 451 if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE || 452 sdata->vif.type == NL80211_IFTYPE_NAN || 453 (sdata->vif.type == NL80211_IFTYPE_MONITOR && 454 !sdata->vif.bss_conf.mu_mimo_owner && 455 !(changed & BSS_CHANGED_TXPOWER)))) 456 return; 457 458 if (!check_sdata_in_driver(sdata)) 459 return; 460 461 if (!ieee80211_vif_link_active(&sdata->vif, link_id)) 462 return; 463 464 trace_drv_link_info_changed(local, sdata, info, changed); 465 if (local->ops->link_info_changed) 466 local->ops->link_info_changed(&local->hw, &sdata->vif, 467 info, changed); 468 else if (local->ops->bss_info_changed) 469 local->ops->bss_info_changed(&local->hw, &sdata->vif, 470 info, changed); 471 trace_drv_return_void(local); 472 } 473 474 int drv_set_key(struct ieee80211_local *local, 475 enum set_key_cmd cmd, 476 struct ieee80211_sub_if_data *sdata, 477 struct ieee80211_sta *sta, 478 struct ieee80211_key_conf *key) 479 { 480 int ret; 481 482 might_sleep(); 483 lockdep_assert_wiphy(local->hw.wiphy); 484 485 sdata = get_bss_sdata(sdata); 486 if (!check_sdata_in_driver(sdata)) 487 return -EIO; 488 489 if (WARN_ON(key->link_id >= 0 && sdata->vif.active_links && 490 !(sdata->vif.active_links & BIT(key->link_id)))) 491 return -ENOLINK; 492 493 trace_drv_set_key(local, cmd, sdata, sta, key); 494 ret = local->ops->set_key(&local->hw, cmd, &sdata->vif, sta, key); 495 trace_drv_return_int(local, ret); 496 return ret; 497 } 498 499 int drv_change_vif_links(struct ieee80211_local *local, 500 struct ieee80211_sub_if_data *sdata, 501 u16 old_links, u16 new_links, 502 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS]) 503 { 504 struct ieee80211_link_data *link; 505 unsigned long links_to_add; 506 unsigned long links_to_rem; 507 unsigned int link_id; 508 int ret = -EOPNOTSUPP; 509 510 might_sleep(); 511 lockdep_assert_wiphy(local->hw.wiphy); 512 513 if (!check_sdata_in_driver(sdata)) 514 return -EIO; 515 516 if (old_links == new_links) 517 return 0; 518 519 links_to_add = ~old_links & new_links; 520 links_to_rem = old_links & ~new_links; 521 522 for_each_set_bit(link_id, &links_to_rem, IEEE80211_MLD_MAX_NUM_LINKS) { 523 link = rcu_access_pointer(sdata->link[link_id]); 524 525 ieee80211_link_debugfs_drv_remove(link); 526 } 527 528 trace_drv_change_vif_links(local, sdata, old_links, new_links); 529 if (local->ops->change_vif_links) 530 ret = local->ops->change_vif_links(&local->hw, &sdata->vif, 531 old_links, new_links, old); 532 trace_drv_return_int(local, ret); 533 534 if (ret) 535 return ret; 536 537 if (!local->in_reconfig && !local->resuming) { 538 for_each_set_bit(link_id, &links_to_add, 539 IEEE80211_MLD_MAX_NUM_LINKS) { 540 link = rcu_access_pointer(sdata->link[link_id]); 541 542 ieee80211_link_debugfs_drv_add(link); 543 } 544 } 545 546 return 0; 547 } 548 549 int drv_change_sta_links(struct ieee80211_local *local, 550 struct ieee80211_sub_if_data *sdata, 551 struct ieee80211_sta *sta, 552 u16 old_links, u16 new_links) 553 { 554 struct sta_info *info = container_of(sta, struct sta_info, sta); 555 struct link_sta_info *link_sta; 556 unsigned long links_to_add; 557 unsigned long links_to_rem; 558 unsigned int link_id; 559 int ret = -EOPNOTSUPP; 560 561 might_sleep(); 562 lockdep_assert_wiphy(local->hw.wiphy); 563 564 if (!check_sdata_in_driver(sdata)) 565 return -EIO; 566 567 old_links &= sdata->vif.active_links; 568 new_links &= sdata->vif.active_links; 569 570 if (old_links == new_links) 571 return 0; 572 573 links_to_add = ~old_links & new_links; 574 links_to_rem = old_links & ~new_links; 575 576 for_each_set_bit(link_id, &links_to_rem, IEEE80211_MLD_MAX_NUM_LINKS) { 577 link_sta = rcu_dereference_protected(info->link[link_id], 578 lockdep_is_held(&local->hw.wiphy->mtx)); 579 580 ieee80211_link_sta_debugfs_drv_remove(link_sta); 581 } 582 583 trace_drv_change_sta_links(local, sdata, sta, old_links, new_links); 584 if (local->ops->change_sta_links) 585 ret = local->ops->change_sta_links(&local->hw, &sdata->vif, sta, 586 old_links, new_links); 587 trace_drv_return_int(local, ret); 588 589 if (ret) 590 return ret; 591 592 /* during reconfig don't add it to debugfs again */ 593 if (local->in_reconfig || local->resuming) 594 return 0; 595 596 for_each_set_bit(link_id, &links_to_add, IEEE80211_MLD_MAX_NUM_LINKS) { 597 link_sta = rcu_dereference_protected(info->link[link_id], 598 lockdep_is_held(&local->hw.wiphy->mtx)); 599 ieee80211_link_sta_debugfs_drv_add(link_sta); 600 } 601 602 return 0; 603 } 604