1 /* 2 * Copyright (c) 2014-2020 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for 5 * any purpose with or without fee is hereby granted, provided that the 6 * above copyright notice and this permission notice appear in all 7 * copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 /** 20 * DOC: reg_callbacks.c 21 * This file defines regulatory callback functions 22 */ 23 24 #include <wlan_cmn.h> 25 #include <reg_services_public_struct.h> 26 #include <wlan_objmgr_psoc_obj.h> 27 #include <wlan_objmgr_pdev_obj.h> 28 #include "reg_priv_objs.h" 29 #include "reg_utils.h" 30 #include <scheduler_api.h> 31 #include "reg_callbacks.h" 32 #include "reg_services_common.h" 33 #include "reg_build_chan_list.h" 34 35 /** 36 * reg_call_chan_change_cbks() - Call registered callback functions on channel 37 * change. 38 * @psoc: Pointer to global psoc structure. 39 * @pdev: Pointer to global pdev structure. 40 */ 41 static void reg_call_chan_change_cbks(struct wlan_objmgr_psoc *psoc, 42 struct wlan_objmgr_pdev *pdev) 43 { 44 struct chan_change_cbk_entry *cbk_list; 45 struct wlan_regulatory_psoc_priv_obj *psoc_priv_obj; 46 struct wlan_regulatory_pdev_priv_obj *pdev_priv_obj; 47 struct regulatory_channel *cur_chan_list; 48 uint32_t ctr; 49 struct avoid_freq_ind_data *avoid_freq_ind = NULL; 50 reg_chan_change_callback callback; 51 52 psoc_priv_obj = reg_get_psoc_obj(psoc); 53 if (!IS_VALID_PSOC_REG_OBJ(psoc_priv_obj)) { 54 reg_alert("psoc reg component is NULL"); 55 return; 56 } 57 58 pdev_priv_obj = reg_get_pdev_obj(pdev); 59 if (!IS_VALID_PDEV_REG_OBJ(pdev_priv_obj)) { 60 reg_alert("pdev reg component is NULL"); 61 return; 62 } 63 64 cur_chan_list = qdf_mem_malloc(NUM_CHANNELS * sizeof(*cur_chan_list)); 65 if (!cur_chan_list) 66 return; 67 68 qdf_mem_copy(cur_chan_list, 69 pdev_priv_obj->cur_chan_list, 70 NUM_CHANNELS * 71 sizeof(struct regulatory_channel)); 72 73 if (psoc_priv_obj->ch_avoid_ind) { 74 avoid_freq_ind = qdf_mem_malloc(sizeof(*avoid_freq_ind)); 75 if (!avoid_freq_ind) 76 goto skip_ch_avoid_ind; 77 78 qdf_mem_copy(&avoid_freq_ind->freq_list, 79 &psoc_priv_obj->avoid_freq_list, 80 sizeof(struct ch_avoid_ind_type)); 81 qdf_mem_copy(&avoid_freq_ind->chan_list, 82 &psoc_priv_obj->unsafe_chan_list, 83 sizeof(struct unsafe_ch_list)); 84 psoc_priv_obj->ch_avoid_ind = false; 85 } 86 87 skip_ch_avoid_ind: 88 cbk_list = psoc_priv_obj->cbk_list; 89 90 for (ctr = 0; ctr < REG_MAX_CHAN_CHANGE_CBKS; ctr++) { 91 callback = NULL; 92 qdf_spin_lock_bh(&psoc_priv_obj->cbk_list_lock); 93 if (cbk_list[ctr].cbk) 94 callback = cbk_list[ctr].cbk; 95 qdf_spin_unlock_bh(&psoc_priv_obj->cbk_list_lock); 96 if (callback) 97 callback(psoc, pdev, cur_chan_list, avoid_freq_ind, 98 cbk_list[ctr].arg); 99 } 100 qdf_mem_free(cur_chan_list); 101 if (avoid_freq_ind) 102 qdf_mem_free(avoid_freq_ind); 103 } 104 105 /** 106 * reg_alloc_and_fill_payload() - Alloc and fill payload structure. 107 * @psoc: Pointer to global psoc structure. 108 * @pdev: Pointer to global pdev structure. 109 */ 110 static void reg_alloc_and_fill_payload(struct wlan_objmgr_psoc *psoc, 111 struct wlan_objmgr_pdev *pdev, 112 struct reg_sched_payload **payload) 113 { 114 *payload = qdf_mem_malloc(sizeof(**payload)); 115 if (*payload) { 116 (*payload)->psoc = psoc; 117 (*payload)->pdev = pdev; 118 } 119 } 120 121 /** 122 * reg_chan_change_flush_cbk_sb() - Flush south bound channel change callbacks. 123 * @msg: Pointer to scheduler msg structure. 124 */ 125 static QDF_STATUS reg_chan_change_flush_cbk_sb(struct scheduler_msg *msg) 126 { 127 struct reg_sched_payload *load = msg->bodyptr; 128 struct wlan_objmgr_psoc *psoc = load->psoc; 129 struct wlan_objmgr_pdev *pdev = load->pdev; 130 131 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_SB_ID); 132 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_SB_ID); 133 qdf_mem_free(load); 134 135 return QDF_STATUS_SUCCESS; 136 } 137 138 /** 139 * reg_sched_chan_change_cbks_sb() - Schedule south bound channel change 140 * callbacks. 141 * @msg: Pointer to scheduler msg structure. 142 */ 143 static QDF_STATUS reg_sched_chan_change_cbks_sb(struct scheduler_msg *msg) 144 { 145 struct reg_sched_payload *load = msg->bodyptr; 146 struct wlan_objmgr_psoc *psoc = load->psoc; 147 struct wlan_objmgr_pdev *pdev = load->pdev; 148 149 reg_call_chan_change_cbks(psoc, pdev); 150 151 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_SB_ID); 152 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_SB_ID); 153 qdf_mem_free(load); 154 155 return QDF_STATUS_SUCCESS; 156 } 157 158 /** 159 * reg_chan_change_flush_cbk_nb() - Flush north bound channel change callbacks. 160 * @msg: Pointer to scheduler msg structure. 161 */ 162 static QDF_STATUS reg_chan_change_flush_cbk_nb(struct scheduler_msg *msg) 163 { 164 struct reg_sched_payload *load = msg->bodyptr; 165 struct wlan_objmgr_psoc *psoc = load->psoc; 166 struct wlan_objmgr_pdev *pdev = load->pdev; 167 168 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_NB_ID); 169 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_NB_ID); 170 qdf_mem_free(load); 171 172 return QDF_STATUS_SUCCESS; 173 } 174 175 /** 176 * reg_sched_chan_change_cbks_nb() - Schedule north bound channel change 177 * callbacks. 178 * @msg: Pointer to scheduler msg structure. 179 */ 180 static QDF_STATUS reg_sched_chan_change_cbks_nb(struct scheduler_msg *msg) 181 { 182 struct reg_sched_payload *load = msg->bodyptr; 183 struct wlan_objmgr_psoc *psoc = load->psoc; 184 struct wlan_objmgr_pdev *pdev = load->pdev; 185 186 reg_call_chan_change_cbks(psoc, pdev); 187 188 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_NB_ID); 189 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_NB_ID); 190 qdf_mem_free(load); 191 192 return QDF_STATUS_SUCCESS; 193 } 194 195 QDF_STATUS reg_send_scheduler_msg_sb(struct wlan_objmgr_psoc *psoc, 196 struct wlan_objmgr_pdev *pdev) 197 { 198 struct scheduler_msg msg = {0}; 199 struct reg_sched_payload *payload; 200 struct wlan_regulatory_pdev_priv_obj *pdev_priv_obj; 201 QDF_STATUS status; 202 203 pdev_priv_obj = reg_get_pdev_obj(pdev); 204 if (!IS_VALID_PDEV_REG_OBJ(pdev_priv_obj)) { 205 reg_alert("pdev reg component is NULL"); 206 return QDF_STATUS_E_FAILURE; 207 } 208 209 if (!pdev_priv_obj->chan_list_recvd) { 210 reg_err("Empty channel list"); 211 return QDF_STATUS_E_FAILURE; 212 } 213 214 status = wlan_objmgr_psoc_try_get_ref(psoc, WLAN_REGULATORY_SB_ID); 215 if (QDF_IS_STATUS_ERROR(status)) { 216 reg_err("error taking psoc ref cnt"); 217 return status; 218 } 219 220 status = wlan_objmgr_pdev_try_get_ref(pdev, WLAN_REGULATORY_SB_ID); 221 if (QDF_IS_STATUS_ERROR(status)) { 222 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_SB_ID); 223 reg_err("error taking pdev ref cnt"); 224 return status; 225 } 226 227 reg_alloc_and_fill_payload(psoc, pdev, &payload); 228 if (!payload) { 229 reg_err("malloc failed"); 230 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_SB_ID); 231 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_SB_ID); 232 return QDF_STATUS_E_NOMEM; 233 } 234 235 msg.bodyptr = payload; 236 msg.callback = reg_sched_chan_change_cbks_sb; 237 msg.flush_callback = reg_chan_change_flush_cbk_sb; 238 239 status = scheduler_post_message(QDF_MODULE_ID_REGULATORY, 240 QDF_MODULE_ID_REGULATORY, 241 QDF_MODULE_ID_TARGET_IF, &msg); 242 if (QDF_IS_STATUS_ERROR(status)) { 243 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_SB_ID); 244 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_SB_ID); 245 qdf_mem_free(payload); 246 } 247 248 return status; 249 } 250 251 QDF_STATUS reg_send_scheduler_msg_nb(struct wlan_objmgr_psoc *psoc, 252 struct wlan_objmgr_pdev *pdev) 253 { 254 struct scheduler_msg msg = {0}; 255 struct reg_sched_payload *payload; 256 struct wlan_regulatory_pdev_priv_obj *pdev_priv_obj; 257 QDF_STATUS status; 258 259 pdev_priv_obj = reg_get_pdev_obj(pdev); 260 if (!IS_VALID_PDEV_REG_OBJ(pdev_priv_obj)) { 261 reg_alert("pdev reg component is NULL"); 262 return QDF_STATUS_E_FAILURE; 263 } 264 265 if (!pdev_priv_obj->chan_list_recvd) { 266 reg_err("Empty channel list"); 267 return QDF_STATUS_E_FAILURE; 268 } 269 270 status = wlan_objmgr_psoc_try_get_ref(psoc, WLAN_REGULATORY_NB_ID); 271 if (QDF_IS_STATUS_ERROR(status)) { 272 reg_err("error taking psoc ref cnt"); 273 return status; 274 } 275 276 status = wlan_objmgr_pdev_try_get_ref(pdev, WLAN_REGULATORY_NB_ID); 277 if (QDF_IS_STATUS_ERROR(status)) { 278 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_NB_ID); 279 reg_err("error taking pdev ref cnt"); 280 return status; 281 } 282 283 reg_alloc_and_fill_payload(psoc, pdev, &payload); 284 if (!payload) { 285 reg_err("malloc failed"); 286 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_NB_ID); 287 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_NB_ID); 288 return QDF_STATUS_E_NOMEM; 289 } 290 msg.bodyptr = payload; 291 msg.callback = reg_sched_chan_change_cbks_nb; 292 msg.flush_callback = reg_chan_change_flush_cbk_nb; 293 294 status = scheduler_post_message(QDF_MODULE_ID_REGULATORY, 295 QDF_MODULE_ID_REGULATORY, 296 QDF_MODULE_ID_OS_IF, &msg); 297 if (QDF_IS_STATUS_ERROR(status)) { 298 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_NB_ID); 299 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_NB_ID); 300 qdf_mem_free(payload); 301 } 302 303 return status; 304 } 305 306 QDF_STATUS reg_notify_sap_event(struct wlan_objmgr_pdev *pdev, 307 bool sap_state) 308 { 309 struct wlan_regulatory_psoc_priv_obj *psoc_priv_obj; 310 struct wlan_regulatory_pdev_priv_obj *pdev_priv_obj; 311 struct wlan_objmgr_psoc *psoc; 312 QDF_STATUS status; 313 314 pdev_priv_obj = reg_get_pdev_obj(pdev); 315 316 if (!IS_VALID_PDEV_REG_OBJ(pdev_priv_obj)) { 317 reg_err("pdev reg component is NULL"); 318 return QDF_STATUS_E_INVAL; 319 } 320 321 psoc = wlan_pdev_get_psoc(pdev); 322 if (!psoc) { 323 reg_err("psoc is NULL"); 324 return QDF_STATUS_E_INVAL; 325 } 326 327 psoc_priv_obj = reg_get_psoc_obj(psoc); 328 if (!IS_VALID_PSOC_REG_OBJ(psoc_priv_obj)) { 329 reg_err("psoc reg component is NULL"); 330 return QDF_STATUS_E_INVAL; 331 } 332 333 reg_info("sap_state: %d", sap_state); 334 335 if (pdev_priv_obj->sap_state == sap_state) 336 return QDF_STATUS_SUCCESS; 337 338 pdev_priv_obj->sap_state = sap_state; 339 set_disable_channel_state(pdev_priv_obj); 340 341 reg_compute_pdev_current_chan_list(pdev_priv_obj); 342 status = reg_send_scheduler_msg_sb(psoc, pdev); 343 344 return status; 345 } 346 347 void reg_register_chan_change_callback(struct wlan_objmgr_psoc *psoc, 348 reg_chan_change_callback cbk, void *arg) 349 { 350 struct wlan_regulatory_psoc_priv_obj *psoc_priv_obj; 351 uint32_t count; 352 353 psoc_priv_obj = reg_get_psoc_obj(psoc); 354 if (!psoc_priv_obj) { 355 reg_err("reg psoc private obj is NULL"); 356 return; 357 } 358 359 qdf_spin_lock_bh(&psoc_priv_obj->cbk_list_lock); 360 for (count = 0; count < REG_MAX_CHAN_CHANGE_CBKS; count++) 361 if (!psoc_priv_obj->cbk_list[count].cbk) { 362 psoc_priv_obj->cbk_list[count].cbk = cbk; 363 psoc_priv_obj->cbk_list[count].arg = arg; 364 psoc_priv_obj->num_chan_change_cbks++; 365 break; 366 } 367 qdf_spin_unlock_bh(&psoc_priv_obj->cbk_list_lock); 368 369 if (count == REG_MAX_CHAN_CHANGE_CBKS) 370 reg_err("callback list is full"); 371 } 372 373 void reg_unregister_chan_change_callback(struct wlan_objmgr_psoc *psoc, 374 reg_chan_change_callback cbk) 375 { 376 struct wlan_regulatory_psoc_priv_obj *psoc_priv_obj; 377 uint32_t count; 378 379 psoc_priv_obj = reg_get_psoc_obj(psoc); 380 if (!psoc_priv_obj) { 381 reg_err("reg psoc private obj is NULL"); 382 return; 383 } 384 385 qdf_spin_lock_bh(&psoc_priv_obj->cbk_list_lock); 386 for (count = 0; count < REG_MAX_CHAN_CHANGE_CBKS; count++) 387 if (psoc_priv_obj->cbk_list[count].cbk == cbk) { 388 psoc_priv_obj->cbk_list[count].cbk = NULL; 389 psoc_priv_obj->num_chan_change_cbks--; 390 break; 391 } 392 qdf_spin_unlock_bh(&psoc_priv_obj->cbk_list_lock); 393 394 if (count == REG_MAX_CHAN_CHANGE_CBKS) 395 reg_err("callback not found in the list"); 396 } 397 398