1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2024-2025 Intel Corporation 4 */ 5 6 #include "mld.h" 7 #include "notif.h" 8 #include "scan.h" 9 #include "iface.h" 10 #include "mlo.h" 11 #include "iwl-trans.h" 12 #include "fw/file.h" 13 #include "fw/dbg.h" 14 #include "fw/api/cmdhdr.h" 15 #include "fw/api/mac-cfg.h" 16 #include "session-protect.h" 17 #include "fw/api/time-event.h" 18 #include "fw/api/tx.h" 19 #include "fw/api/rs.h" 20 #include "fw/api/offload.h" 21 #include "fw/api/stats.h" 22 #include "fw/api/rfi.h" 23 #include "fw/api/coex.h" 24 25 #include "mcc.h" 26 #include "link.h" 27 #include "tx.h" 28 #include "rx.h" 29 #include "tlc.h" 30 #include "agg.h" 31 #include "mac80211.h" 32 #include "thermal.h" 33 #include "roc.h" 34 #include "stats.h" 35 #include "coex.h" 36 #include "time_sync.h" 37 #include "ftm-initiator.h" 38 39 /* Please use this in an increasing order of the versions */ 40 #define CMD_VER_ENTRY(_ver, _struct) \ 41 { .size = sizeof(struct _struct), .ver = _ver }, 42 #define CMD_VERSIONS(name, ...) \ 43 static const struct iwl_notif_struct_size \ 44 iwl_notif_struct_sizes_##name[] = { __VA_ARGS__ }; 45 46 #define RX_HANDLER_NO_OBJECT(_grp, _cmd, _name, _context) \ 47 {.cmd_id = WIDE_ID(_grp, _cmd), \ 48 .context = _context, \ 49 .fn = iwl_mld_handle_##_name, \ 50 .sizes = iwl_notif_struct_sizes_##_name, \ 51 .n_sizes = ARRAY_SIZE(iwl_notif_struct_sizes_##_name), \ 52 }, 53 54 /* Use this for Rx handlers that do not need notification validation */ 55 #define RX_HANDLER_NO_VAL(_grp, _cmd, _name, _context) \ 56 {.cmd_id = WIDE_ID(_grp, _cmd), \ 57 .context = _context, \ 58 .fn = iwl_mld_handle_##_name, \ 59 }, 60 61 #define RX_HANDLER_VAL_FN(_grp, _cmd, _name, _context) \ 62 { .cmd_id = WIDE_ID(_grp, _cmd), \ 63 .context = _context, \ 64 .fn = iwl_mld_handle_##_name, \ 65 .val_fn = iwl_mld_validate_##_name, \ 66 }, 67 68 #define DEFINE_SIMPLE_CANCELLATION(name, notif_struct, id_member) \ 69 static bool iwl_mld_cancel_##name##_notif(struct iwl_mld *mld, \ 70 struct iwl_rx_packet *pkt, \ 71 u32 obj_id) \ 72 { \ 73 const struct notif_struct *notif = (const void *)pkt->data; \ 74 \ 75 return obj_id == _Generic((notif)->id_member, \ 76 __le32: le32_to_cpu((notif)->id_member), \ 77 __le16: le16_to_cpu((notif)->id_member), \ 78 u8: (notif)->id_member); \ 79 } 80 81 /* Currently only defined for the RX_HANDLER_SIZES options. Use this for 82 * notifications that belong to a specific object, and that should be 83 * canceled when the object is removed 84 */ 85 #define RX_HANDLER_OF_OBJ(_grp, _cmd, _name, _obj_type) \ 86 {.cmd_id = WIDE_ID(_grp, _cmd), \ 87 /* Only async handlers can be canceled */ \ 88 .context = RX_HANDLER_ASYNC, \ 89 .fn = iwl_mld_handle_##_name, \ 90 .sizes = iwl_notif_struct_sizes_##_name, \ 91 .n_sizes = ARRAY_SIZE(iwl_notif_struct_sizes_##_name), \ 92 .obj_type = IWL_MLD_OBJECT_TYPE_##_obj_type, \ 93 .cancel = iwl_mld_cancel_##_name, \ 94 }, 95 96 #define RX_HANDLER_OF_LINK(_grp, _cmd, _name) \ 97 RX_HANDLER_OF_OBJ(_grp, _cmd, _name, LINK) \ 98 99 #define RX_HANDLER_OF_VIF(_grp, _cmd, _name) \ 100 RX_HANDLER_OF_OBJ(_grp, _cmd, _name, VIF) \ 101 102 #define RX_HANDLER_OF_STA(_grp, _cmd, _name) \ 103 RX_HANDLER_OF_OBJ(_grp, _cmd, _name, STA) \ 104 105 #define RX_HANDLER_OF_ROC(_grp, _cmd, _name) \ 106 RX_HANDLER_OF_OBJ(_grp, _cmd, _name, ROC) 107 108 #define RX_HANDLER_OF_SCAN(_grp, _cmd, _name) \ 109 RX_HANDLER_OF_OBJ(_grp, _cmd, _name, SCAN) 110 111 #define RX_HANDLER_OF_FTM_REQ(_grp, _cmd, _name) \ 112 RX_HANDLER_OF_OBJ(_grp, _cmd, _name, FTM_REQ) 113 114 static void iwl_mld_handle_mfuart_notif(struct iwl_mld *mld, 115 struct iwl_rx_packet *pkt) 116 { 117 struct iwl_mfuart_load_notif *mfuart_notif = (void *)pkt->data; 118 119 IWL_DEBUG_INFO(mld, 120 "MFUART: installed ver: 0x%08x, external ver: 0x%08x\n", 121 le32_to_cpu(mfuart_notif->installed_ver), 122 le32_to_cpu(mfuart_notif->external_ver)); 123 IWL_DEBUG_INFO(mld, 124 "MFUART: status: 0x%08x, duration: 0x%08x image size: 0x%08x\n", 125 le32_to_cpu(mfuart_notif->status), 126 le32_to_cpu(mfuart_notif->duration), 127 le32_to_cpu(mfuart_notif->image_size)); 128 } 129 130 static void iwl_mld_mu_mimo_iface_iterator(void *_data, u8 *mac, 131 struct ieee80211_vif *vif) 132 { 133 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 134 unsigned int link_id = 0; 135 136 if (WARN(hweight16(vif->active_links) > 1, 137 "no support for this notif while in EMLSR 0x%x\n", 138 vif->active_links)) 139 return; 140 141 if (ieee80211_vif_is_mld(vif)) { 142 link_id = __ffs(vif->active_links); 143 bss_conf = link_conf_dereference_check(vif, link_id); 144 } 145 146 if (!WARN_ON(!bss_conf) && bss_conf->mu_mimo_owner) { 147 const struct iwl_mu_group_mgmt_notif *notif = _data; 148 149 BUILD_BUG_ON(sizeof(notif->membership_status) != 150 WLAN_MEMBERSHIP_LEN); 151 BUILD_BUG_ON(sizeof(notif->user_position) != 152 WLAN_USER_POSITION_LEN); 153 154 /* MU-MIMO Group Id action frame is little endian. We treat 155 * the data received from firmware as if it came from the 156 * action frame, so no conversion is needed. 157 */ 158 ieee80211_update_mu_groups(vif, link_id, 159 #if defined(__linux__) 160 (u8 *)¬if->membership_status, 161 (u8 *)¬if->user_position); 162 #elif defined(__FreeBSD__) 163 (const u8 *)¬if->membership_status, 164 (const u8 *)¬if->user_position); 165 #endif 166 } 167 } 168 169 /* This handler is called in SYNC mode because it needs to be serialized with 170 * Rx as specified in ieee80211_update_mu_groups()'s documentation. 171 */ 172 static void iwl_mld_handle_mu_mimo_grp_notif(struct iwl_mld *mld, 173 struct iwl_rx_packet *pkt) 174 { 175 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 176 177 ieee80211_iterate_active_interfaces_atomic(mld->hw, 178 IEEE80211_IFACE_ITER_NORMAL, 179 iwl_mld_mu_mimo_iface_iterator, 180 notif); 181 } 182 183 static void 184 iwl_mld_handle_channel_switch_start_notif(struct iwl_mld *mld, 185 struct iwl_rx_packet *pkt) 186 { 187 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data; 188 u32 link_id = le32_to_cpu(notif->link_id); 189 struct ieee80211_bss_conf *link_conf = 190 iwl_mld_fw_id_to_link_conf(mld, link_id); 191 struct ieee80211_vif *vif; 192 193 if (WARN_ON(!link_conf)) 194 return; 195 196 vif = link_conf->vif; 197 198 IWL_DEBUG_INFO(mld, 199 "CSA Start Notification with vif type: %d, link_id: %d\n", 200 vif->type, 201 link_conf->link_id); 202 203 switch (vif->type) { 204 case NL80211_IFTYPE_AP: 205 /* We don't support canceling a CSA as it was advertised 206 * by the AP itself 207 */ 208 if (!link_conf->csa_active) 209 return; 210 211 ieee80211_csa_finish(vif, link_conf->link_id); 212 break; 213 case NL80211_IFTYPE_STATION: 214 if (!link_conf->csa_active) { 215 /* Either unexpected cs notif or mac80211 chose to 216 * ignore, for example in channel switch to same channel 217 */ 218 struct iwl_cancel_channel_switch_cmd cmd = { 219 .id = cpu_to_le32(link_id), 220 }; 221 222 if (iwl_mld_send_cmd_pdu(mld, 223 WIDE_ID(MAC_CONF_GROUP, 224 CANCEL_CHANNEL_SWITCH_CMD), 225 &cmd)) 226 IWL_ERR(mld, 227 "Failed to cancel the channel switch\n"); 228 return; 229 } 230 231 ieee80211_chswitch_done(vif, true, link_conf->link_id); 232 break; 233 234 default: 235 WARN(1, "CSA on invalid vif type: %d", vif->type); 236 } 237 } 238 239 static void 240 iwl_mld_handle_channel_switch_error_notif(struct iwl_mld *mld, 241 struct iwl_rx_packet *pkt) 242 { 243 struct iwl_channel_switch_error_notif *notif = (void *)pkt->data; 244 struct ieee80211_bss_conf *link_conf; 245 struct ieee80211_vif *vif; 246 u32 link_id = le32_to_cpu(notif->link_id); 247 u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask); 248 249 link_conf = iwl_mld_fw_id_to_link_conf(mld, link_id); 250 if (WARN_ON(!link_conf)) 251 return; 252 253 vif = link_conf->vif; 254 255 IWL_DEBUG_INFO(mld, "FW reports CSA error: id=%u, csa_err_mask=%u\n", 256 link_id, csa_err_mask); 257 258 if (csa_err_mask & (CS_ERR_COUNT_ERROR | 259 CS_ERR_LONG_DELAY_AFTER_CS | 260 CS_ERR_TX_BLOCK_TIMER_EXPIRED)) 261 ieee80211_channel_switch_disconnect(vif); 262 } 263 264 static void iwl_mld_handle_beacon_notification(struct iwl_mld *mld, 265 struct iwl_rx_packet *pkt) 266 { 267 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; 268 269 mld->ibss_manager = !!beacon->ibss_mgr_status; 270 } 271 272 /** 273 * DOC: Notification versioning 274 * 275 * The firmware's notifications change from time to time. In order to 276 * differentiate between different versions of the same notification, the 277 * firmware advertises the version of each notification. 278 * Here are listed all the notifications that are supported. Several versions 279 * of the same notification can be allowed at the same time: 280 * 281 * CMD_VERSION(my_multi_version_notif, 282 * CMD_VER_ENTRY(1, iwl_my_multi_version_notif_ver1) 283 * CMD_VER_ENTRY(2, iwl_my_multi_version_notif_ver2) 284 * 285 * etc... 286 * 287 * The driver will enforce that the notification coming from the firmware 288 * has its version listed here and it'll also enforce that the firmware sent 289 * at least enough bytes to cover the structure listed in the CMD_VER_ENTRY. 290 */ 291 292 CMD_VERSIONS(scan_complete_notif, 293 CMD_VER_ENTRY(1, iwl_umac_scan_complete)) 294 CMD_VERSIONS(scan_iter_complete_notif, 295 CMD_VER_ENTRY(2, iwl_umac_scan_iter_complete_notif)) 296 CMD_VERSIONS(channel_survey_notif, 297 CMD_VER_ENTRY(1, iwl_umac_scan_channel_survey_notif)) 298 CMD_VERSIONS(mfuart_notif, 299 CMD_VER_ENTRY(2, iwl_mfuart_load_notif)) 300 CMD_VERSIONS(update_mcc, 301 CMD_VER_ENTRY(1, iwl_mcc_chub_notif)) 302 CMD_VERSIONS(session_prot_notif, 303 CMD_VER_ENTRY(3, iwl_session_prot_notif)) 304 CMD_VERSIONS(missed_beacon_notif, 305 CMD_VER_ENTRY(5, iwl_missed_beacons_notif)) 306 CMD_VERSIONS(tx_resp_notif, 307 CMD_VER_ENTRY(8, iwl_tx_resp) 308 CMD_VER_ENTRY(9, iwl_tx_resp)) 309 CMD_VERSIONS(compressed_ba_notif, 310 CMD_VER_ENTRY(5, iwl_compressed_ba_notif) 311 CMD_VER_ENTRY(6, iwl_compressed_ba_notif) 312 CMD_VER_ENTRY(7, iwl_compressed_ba_notif)) 313 CMD_VERSIONS(tlc_notif, 314 CMD_VER_ENTRY(3, iwl_tlc_update_notif) 315 CMD_VER_ENTRY(4, iwl_tlc_update_notif)) 316 CMD_VERSIONS(mu_mimo_grp_notif, 317 CMD_VER_ENTRY(1, iwl_mu_group_mgmt_notif)) 318 CMD_VERSIONS(channel_switch_start_notif, 319 CMD_VER_ENTRY(3, iwl_channel_switch_start_notif)) 320 CMD_VERSIONS(channel_switch_error_notif, 321 CMD_VER_ENTRY(2, iwl_channel_switch_error_notif)) 322 CMD_VERSIONS(ct_kill_notif, 323 CMD_VER_ENTRY(2, ct_kill_notif)) 324 CMD_VERSIONS(temp_notif, 325 CMD_VER_ENTRY(2, iwl_dts_measurement_notif)) 326 CMD_VERSIONS(roc_notif, 327 CMD_VER_ENTRY(1, iwl_roc_notif)) 328 CMD_VERSIONS(probe_resp_data_notif, 329 CMD_VER_ENTRY(1, iwl_probe_resp_data_notif)) 330 CMD_VERSIONS(datapath_monitor_notif, 331 CMD_VER_ENTRY(1, iwl_datapath_monitor_notif)) 332 CMD_VERSIONS(stats_oper_notif, 333 CMD_VER_ENTRY(3, iwl_system_statistics_notif_oper)) 334 CMD_VERSIONS(stats_oper_part1_notif, 335 CMD_VER_ENTRY(4, iwl_system_statistics_part1_notif_oper)) 336 CMD_VERSIONS(bt_coex_notif, 337 CMD_VER_ENTRY(1, iwl_bt_coex_profile_notif)) 338 CMD_VERSIONS(beacon_notification, 339 CMD_VER_ENTRY(6, iwl_extended_beacon_notif)) 340 CMD_VERSIONS(emlsr_mode_notif, 341 CMD_VER_ENTRY(1, iwl_esr_mode_notif_v1) 342 CMD_VER_ENTRY(2, iwl_esr_mode_notif)) 343 CMD_VERSIONS(emlsr_trans_fail_notif, 344 CMD_VER_ENTRY(1, iwl_esr_trans_fail_notif)) 345 CMD_VERSIONS(uapsd_misbehaving_ap_notif, 346 CMD_VER_ENTRY(1, iwl_uapsd_misbehaving_ap_notif)) 347 CMD_VERSIONS(time_msmt_notif, 348 CMD_VER_ENTRY(1, iwl_time_msmt_notify)) 349 CMD_VERSIONS(time_sync_confirm_notif, 350 CMD_VER_ENTRY(1, iwl_time_msmt_cfm_notify)) 351 CMD_VERSIONS(ftm_resp_notif, CMD_VER_ENTRY(10, iwl_tof_range_rsp_ntfy)) 352 CMD_VERSIONS(beacon_filter_notif, CMD_VER_ENTRY(2, iwl_beacon_filter_notif)) 353 354 DEFINE_SIMPLE_CANCELLATION(session_prot, iwl_session_prot_notif, mac_link_id) 355 DEFINE_SIMPLE_CANCELLATION(tlc, iwl_tlc_update_notif, sta_id) 356 DEFINE_SIMPLE_CANCELLATION(channel_switch_start, 357 iwl_channel_switch_start_notif, link_id) 358 DEFINE_SIMPLE_CANCELLATION(channel_switch_error, 359 iwl_channel_switch_error_notif, link_id) 360 DEFINE_SIMPLE_CANCELLATION(datapath_monitor, iwl_datapath_monitor_notif, 361 link_id) 362 DEFINE_SIMPLE_CANCELLATION(roc, iwl_roc_notif, activity) 363 DEFINE_SIMPLE_CANCELLATION(scan_complete, iwl_umac_scan_complete, uid) 364 DEFINE_SIMPLE_CANCELLATION(probe_resp_data, iwl_probe_resp_data_notif, 365 mac_id) 366 DEFINE_SIMPLE_CANCELLATION(uapsd_misbehaving_ap, iwl_uapsd_misbehaving_ap_notif, 367 mac_id) 368 DEFINE_SIMPLE_CANCELLATION(ftm_resp, iwl_tof_range_rsp_ntfy, request_id) 369 DEFINE_SIMPLE_CANCELLATION(beacon_filter, iwl_beacon_filter_notif, link_id) 370 371 /** 372 * DOC: Handlers for fw notifications 373 * 374 * Here are listed the notifications IDs (including the group ID), the handler 375 * of the notification and how it should be called: 376 * 377 * - RX_HANDLER_SYNC: will be called as part of the Rx path 378 * - RX_HANDLER_ASYNC: will be handled in a working with the wiphy_lock held 379 * 380 * This means that if the firmware sends two notifications A and B in that 381 * order and notification A is RX_HANDLER_ASYNC and notification is 382 * RX_HANDLER_SYNC, the handler of B will likely be called before the handler 383 * of A. 384 * 385 * This list should be in order of frequency for performance purposes. 386 * The handler can be one from two contexts, see &iwl_rx_handler_context 387 * 388 * A handler can declare that it relies on a specific object in which case it 389 * can be cancelled in case the object is deleted. In order to use this 390 * mechanism, a cancellation function is needed. The cancellation function must 391 * receive an object id (the index of that object in the firmware) and a 392 * notification payload. It'll return true if that specific notification should 393 * be cancelled upon the obliteration of the specific instance of the object. 394 * 395 * DEFINE_SIMPLE_CANCELLATION allows to easily create a cancellation function 396 * that wills simply return true if a given object id matches the object id in 397 * the firmware notification. 398 */ 399 400 VISIBLE_IF_IWLWIFI_KUNIT 401 const struct iwl_rx_handler iwl_mld_rx_handlers[] = { 402 RX_HANDLER_NO_OBJECT(LEGACY_GROUP, TX_CMD, tx_resp_notif, 403 RX_HANDLER_SYNC) 404 RX_HANDLER_NO_OBJECT(LEGACY_GROUP, BA_NOTIF, compressed_ba_notif, 405 RX_HANDLER_SYNC) 406 RX_HANDLER_OF_SCAN(LEGACY_GROUP, SCAN_COMPLETE_UMAC, 407 scan_complete_notif) 408 RX_HANDLER_NO_OBJECT(LEGACY_GROUP, SCAN_ITERATION_COMPLETE_UMAC, 409 scan_iter_complete_notif, 410 RX_HANDLER_SYNC) 411 RX_HANDLER_NO_VAL(LEGACY_GROUP, MATCH_FOUND_NOTIFICATION, 412 match_found_notif, RX_HANDLER_SYNC) 413 414 RX_HANDLER_NO_OBJECT(SCAN_GROUP, CHANNEL_SURVEY_NOTIF, 415 channel_survey_notif, 416 RX_HANDLER_ASYNC) 417 418 RX_HANDLER_NO_OBJECT(STATISTICS_GROUP, STATISTICS_OPER_NOTIF, 419 stats_oper_notif, RX_HANDLER_ASYNC) 420 RX_HANDLER_NO_OBJECT(STATISTICS_GROUP, STATISTICS_OPER_PART1_NOTIF, 421 stats_oper_part1_notif, RX_HANDLER_ASYNC) 422 423 RX_HANDLER_NO_OBJECT(LEGACY_GROUP, MFUART_LOAD_NOTIFICATION, 424 mfuart_notif, RX_HANDLER_SYNC) 425 426 RX_HANDLER_NO_OBJECT(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE, 427 temp_notif, RX_HANDLER_ASYNC) 428 RX_HANDLER_OF_LINK(MAC_CONF_GROUP, SESSION_PROTECTION_NOTIF, 429 session_prot_notif) 430 RX_HANDLER_OF_LINK(MAC_CONF_GROUP, MISSED_BEACONS_NOTIF, 431 missed_beacon_notif) 432 RX_HANDLER_OF_STA(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF, tlc_notif) 433 RX_HANDLER_OF_LINK(MAC_CONF_GROUP, CHANNEL_SWITCH_START_NOTIF, 434 channel_switch_start_notif) 435 RX_HANDLER_OF_LINK(MAC_CONF_GROUP, CHANNEL_SWITCH_ERROR_NOTIF, 436 channel_switch_error_notif) 437 RX_HANDLER_OF_ROC(MAC_CONF_GROUP, ROC_NOTIF, roc_notif) 438 RX_HANDLER_NO_OBJECT(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, 439 mu_mimo_grp_notif, RX_HANDLER_SYNC) 440 RX_HANDLER_OF_VIF(MAC_CONF_GROUP, PROBE_RESPONSE_DATA_NOTIF, 441 probe_resp_data_notif) 442 RX_HANDLER_NO_OBJECT(PHY_OPS_GROUP, CT_KILL_NOTIFICATION, 443 ct_kill_notif, RX_HANDLER_ASYNC) 444 RX_HANDLER_OF_LINK(DATA_PATH_GROUP, MONITOR_NOTIF, 445 datapath_monitor_notif) 446 RX_HANDLER_NO_OBJECT(LEGACY_GROUP, MCC_CHUB_UPDATE_CMD, update_mcc, 447 RX_HANDLER_ASYNC) 448 RX_HANDLER_NO_OBJECT(BT_COEX_GROUP, PROFILE_NOTIF, 449 bt_coex_notif, RX_HANDLER_ASYNC) 450 RX_HANDLER_NO_OBJECT(LEGACY_GROUP, BEACON_NOTIFICATION, 451 beacon_notification, RX_HANDLER_ASYNC) 452 RX_HANDLER_NO_OBJECT(DATA_PATH_GROUP, ESR_MODE_NOTIF, 453 emlsr_mode_notif, RX_HANDLER_ASYNC) 454 RX_HANDLER_NO_OBJECT(MAC_CONF_GROUP, EMLSR_TRANS_FAIL_NOTIF, 455 emlsr_trans_fail_notif, RX_HANDLER_ASYNC) 456 RX_HANDLER_OF_VIF(LEGACY_GROUP, PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, 457 uapsd_misbehaving_ap_notif) 458 RX_HANDLER_NO_OBJECT(LEGACY_GROUP, 459 WNM_80211V_TIMING_MEASUREMENT_NOTIFICATION, 460 time_msmt_notif, RX_HANDLER_SYNC) 461 RX_HANDLER_NO_OBJECT(LEGACY_GROUP, 462 WNM_80211V_TIMING_MEASUREMENT_CONFIRM_NOTIFICATION, 463 time_sync_confirm_notif, RX_HANDLER_ASYNC) 464 RX_HANDLER_OF_LINK(DATA_PATH_GROUP, BEACON_FILTER_IN_NOTIF, 465 beacon_filter_notif) 466 RX_HANDLER_OF_FTM_REQ(LOCATION_GROUP, TOF_RANGE_RESPONSE_NOTIF, 467 ftm_resp_notif) 468 }; 469 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mld_rx_handlers); 470 471 #if IS_ENABLED(CONFIG_IWLWIFI_KUNIT_TESTS) 472 const unsigned int iwl_mld_rx_handlers_num = ARRAY_SIZE(iwl_mld_rx_handlers); 473 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mld_rx_handlers_num); 474 #endif 475 476 static bool 477 iwl_mld_notif_is_valid(struct iwl_mld *mld, struct iwl_rx_packet *pkt, 478 const struct iwl_rx_handler *handler) 479 { 480 unsigned int size = iwl_rx_packet_payload_len(pkt); 481 size_t notif_ver; 482 483 /* If n_sizes == 0, it indicates that a validation function may be used 484 * or that no validation is required. 485 */ 486 if (!handler->n_sizes) { 487 if (handler->val_fn) 488 return handler->val_fn(mld, pkt); 489 return true; 490 } 491 492 notif_ver = iwl_fw_lookup_notif_ver(mld->fw, 493 iwl_cmd_groupid(handler->cmd_id), 494 iwl_cmd_opcode(handler->cmd_id), 495 IWL_FW_CMD_VER_UNKNOWN); 496 497 for (int i = 0; i < handler->n_sizes; i++) { 498 if (handler->sizes[i].ver != notif_ver) 499 continue; 500 501 if (IWL_FW_CHECK(mld, size < handler->sizes[i].size, 502 "unexpected notification 0x%04x size %d, need %d\n", 503 handler->cmd_id, size, handler->sizes[i].size)) 504 return false; 505 return true; 506 } 507 508 IWL_FW_CHECK_FAILED(mld, 509 "notif 0x%04x ver %zu missing expected size, use version %u size\n", 510 handler->cmd_id, notif_ver, 511 handler->sizes[handler->n_sizes - 1].ver); 512 513 return size < handler->sizes[handler->n_sizes - 1].size; 514 } 515 516 struct iwl_async_handler_entry { 517 struct list_head list; 518 struct iwl_rx_cmd_buffer rxb; 519 const struct iwl_rx_handler *rx_h; 520 }; 521 522 static void 523 iwl_mld_log_async_handler_op(struct iwl_mld *mld, const char *op, 524 struct iwl_rx_cmd_buffer *rxb) 525 { 526 struct iwl_rx_packet *pkt = rxb_addr(rxb); 527 528 IWL_DEBUG_HC(mld, 529 "%s async handler for notif %s (%.2x.%2x, seq 0x%x)\n", 530 op, iwl_get_cmd_string(mld->trans, 531 WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)), 532 pkt->hdr.group_id, pkt->hdr.cmd, 533 le16_to_cpu(pkt->hdr.sequence)); 534 } 535 536 static void iwl_mld_rx_notif(struct iwl_mld *mld, 537 struct iwl_rx_cmd_buffer *rxb, 538 struct iwl_rx_packet *pkt) 539 { 540 for (int i = 0; i < ARRAY_SIZE(iwl_mld_rx_handlers); i++) { 541 const struct iwl_rx_handler *rx_h = &iwl_mld_rx_handlers[i]; 542 struct iwl_async_handler_entry *entry; 543 544 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 545 continue; 546 547 if (!iwl_mld_notif_is_valid(mld, pkt, rx_h)) 548 return; 549 550 if (rx_h->context == RX_HANDLER_SYNC) { 551 rx_h->fn(mld, pkt); 552 break; 553 } 554 555 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 556 /* we can't do much... */ 557 if (!entry) 558 return; 559 560 /* Set the async handler entry */ 561 entry->rxb._page = rxb_steal_page(rxb); 562 entry->rxb._offset = rxb->_offset; 563 entry->rxb._rx_page_order = rxb->_rx_page_order; 564 565 entry->rx_h = rx_h; 566 567 /* Add it to the list and queue the work */ 568 spin_lock(&mld->async_handlers_lock); 569 list_add_tail(&entry->list, &mld->async_handlers_list); 570 spin_unlock(&mld->async_handlers_lock); 571 572 wiphy_work_queue(mld->hw->wiphy, 573 &mld->async_handlers_wk); 574 575 iwl_mld_log_async_handler_op(mld, "Queued", rxb); 576 break; 577 } 578 579 iwl_notification_wait_notify(&mld->notif_wait, pkt); 580 } 581 582 void iwl_mld_rx(struct iwl_op_mode *op_mode, struct napi_struct *napi, 583 struct iwl_rx_cmd_buffer *rxb) 584 { 585 struct iwl_rx_packet *pkt = rxb_addr(rxb); 586 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode); 587 u16 cmd_id = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 588 589 if (likely(cmd_id == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 590 iwl_mld_rx_mpdu(mld, napi, rxb, 0); 591 else if (cmd_id == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 592 iwl_mld_handle_frame_release_notif(mld, napi, pkt, 0); 593 else if (cmd_id == WIDE_ID(LEGACY_GROUP, BAR_FRAME_RELEASE)) 594 iwl_mld_handle_bar_frame_release_notif(mld, napi, pkt, 0); 595 else if (unlikely(cmd_id == WIDE_ID(DATA_PATH_GROUP, 596 RX_QUEUES_NOTIFICATION))) 597 iwl_mld_handle_rx_queues_sync_notif(mld, napi, pkt, 0); 598 else if (cmd_id == WIDE_ID(DATA_PATH_GROUP, RX_NO_DATA_NOTIF)) 599 iwl_mld_rx_monitor_no_data(mld, napi, pkt, 0); 600 else 601 iwl_mld_rx_notif(mld, rxb, pkt); 602 } 603 604 void iwl_mld_rx_rss(struct iwl_op_mode *op_mode, struct napi_struct *napi, 605 struct iwl_rx_cmd_buffer *rxb, unsigned int queue) 606 { 607 struct iwl_rx_packet *pkt = rxb_addr(rxb); 608 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode); 609 u16 cmd_id = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 610 611 if (unlikely(queue >= mld->trans->info.num_rxqs)) 612 return; 613 614 if (likely(cmd_id == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 615 iwl_mld_rx_mpdu(mld, napi, rxb, queue); 616 else if (unlikely(cmd_id == WIDE_ID(DATA_PATH_GROUP, 617 RX_QUEUES_NOTIFICATION))) 618 iwl_mld_handle_rx_queues_sync_notif(mld, napi, pkt, queue); 619 else if (unlikely(cmd_id == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 620 iwl_mld_handle_frame_release_notif(mld, napi, pkt, queue); 621 } 622 623 void iwl_mld_delete_handlers(struct iwl_mld *mld, const u16 *cmds, int n_cmds) 624 { 625 struct iwl_async_handler_entry *entry, *tmp; 626 627 spin_lock_bh(&mld->async_handlers_lock); 628 list_for_each_entry_safe(entry, tmp, &mld->async_handlers_list, list) { 629 bool match = false; 630 631 for (int i = 0; i < n_cmds; i++) { 632 if (entry->rx_h->cmd_id == cmds[i]) { 633 match = true; 634 break; 635 } 636 } 637 638 if (!match) 639 continue; 640 641 iwl_mld_log_async_handler_op(mld, "Delete", &entry->rxb); 642 iwl_free_rxb(&entry->rxb); 643 list_del(&entry->list); 644 kfree(entry); 645 } 646 spin_unlock_bh(&mld->async_handlers_lock); 647 } 648 649 void iwl_mld_async_handlers_wk(struct wiphy *wiphy, struct wiphy_work *wk) 650 { 651 struct iwl_mld *mld = 652 container_of(wk, struct iwl_mld, async_handlers_wk); 653 struct iwl_async_handler_entry *entry, *tmp; 654 LIST_HEAD(local_list); 655 656 /* Sync with Rx path with a lock. Remove all the entries from this 657 * list, add them to a local one (lock free), and then handle them. 658 */ 659 spin_lock_bh(&mld->async_handlers_lock); 660 list_splice_init(&mld->async_handlers_list, &local_list); 661 spin_unlock_bh(&mld->async_handlers_lock); 662 663 list_for_each_entry_safe(entry, tmp, &local_list, list) { 664 iwl_mld_log_async_handler_op(mld, "Handle", &entry->rxb); 665 entry->rx_h->fn(mld, rxb_addr(&entry->rxb)); 666 iwl_free_rxb(&entry->rxb); 667 list_del(&entry->list); 668 kfree(entry); 669 } 670 } 671 672 void iwl_mld_cancel_async_notifications(struct iwl_mld *mld) 673 { 674 struct iwl_async_handler_entry *entry, *tmp; 675 676 lockdep_assert_wiphy(mld->wiphy); 677 678 wiphy_work_cancel(mld->wiphy, &mld->async_handlers_wk); 679 680 spin_lock_bh(&mld->async_handlers_lock); 681 list_for_each_entry_safe(entry, tmp, &mld->async_handlers_list, list) { 682 iwl_mld_log_async_handler_op(mld, "Purged", &entry->rxb); 683 iwl_free_rxb(&entry->rxb); 684 list_del(&entry->list); 685 kfree(entry); 686 } 687 spin_unlock_bh(&mld->async_handlers_lock); 688 } 689 690 void iwl_mld_cancel_notifications_of_object(struct iwl_mld *mld, 691 enum iwl_mld_object_type obj_type, 692 u32 obj_id) 693 { 694 struct iwl_async_handler_entry *entry, *tmp; 695 LIST_HEAD(cancel_list); 696 697 lockdep_assert_wiphy(mld->wiphy); 698 699 if (WARN_ON(obj_type == IWL_MLD_OBJECT_TYPE_NONE)) 700 return; 701 702 /* Sync with RX path and remove matching entries from the async list */ 703 spin_lock_bh(&mld->async_handlers_lock); 704 list_for_each_entry_safe(entry, tmp, &mld->async_handlers_list, list) { 705 const struct iwl_rx_handler *rx_h = entry->rx_h; 706 707 if (rx_h->obj_type != obj_type || WARN_ON(!rx_h->cancel)) 708 continue; 709 710 if (rx_h->cancel(mld, rxb_addr(&entry->rxb), obj_id)) { 711 iwl_mld_log_async_handler_op(mld, "Cancel", &entry->rxb); 712 list_del(&entry->list); 713 list_add_tail(&entry->list, &cancel_list); 714 } 715 } 716 717 spin_unlock_bh(&mld->async_handlers_lock); 718 719 /* Free the matching entries outside of the spinlock */ 720 list_for_each_entry_safe(entry, tmp, &cancel_list, list) { 721 iwl_free_rxb(&entry->rxb); 722 list_del(&entry->list); 723 kfree(entry); 724 } 725 } 726