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