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