1 /* 2 * Copyright (c) 2014-2019 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 reg_alert("Mem alloc failed for current channel list"); 67 return; 68 } 69 70 qdf_mem_copy(cur_chan_list, 71 pdev_priv_obj->cur_chan_list, 72 NUM_CHANNELS * 73 sizeof(struct regulatory_channel)); 74 75 if (psoc_priv_obj->ch_avoid_ind) { 76 avoid_freq_ind = qdf_mem_malloc(sizeof(*avoid_freq_ind)); 77 if (!avoid_freq_ind) { 78 reg_alert("Mem alloc failed for avoid freq ind"); 79 goto skip_ch_avoid_ind; 80 } 81 qdf_mem_copy(&avoid_freq_ind->freq_list, 82 &psoc_priv_obj->avoid_freq_list, 83 sizeof(struct ch_avoid_ind_type)); 84 qdf_mem_copy(&avoid_freq_ind->chan_list, 85 &psoc_priv_obj->unsafe_chan_list, 86 sizeof(struct unsafe_ch_list)); 87 psoc_priv_obj->ch_avoid_ind = false; 88 } 89 90 skip_ch_avoid_ind: 91 cbk_list = psoc_priv_obj->cbk_list; 92 93 for (ctr = 0; ctr < REG_MAX_CHAN_CHANGE_CBKS; ctr++) { 94 callback = NULL; 95 qdf_spin_lock_bh(&psoc_priv_obj->cbk_list_lock); 96 if (cbk_list[ctr].cbk) 97 callback = cbk_list[ctr].cbk; 98 qdf_spin_unlock_bh(&psoc_priv_obj->cbk_list_lock); 99 if (callback) 100 callback(psoc, pdev, cur_chan_list, avoid_freq_ind, 101 cbk_list[ctr].arg); 102 } 103 qdf_mem_free(cur_chan_list); 104 if (avoid_freq_ind) 105 qdf_mem_free(avoid_freq_ind); 106 } 107 108 /** 109 * reg_alloc_and_fill_payload() - Alloc and fill payload structure. 110 * @psoc: Pointer to global psoc structure. 111 * @pdev: Pointer to global pdev structure. 112 */ 113 static void reg_alloc_and_fill_payload(struct wlan_objmgr_psoc *psoc, 114 struct wlan_objmgr_pdev *pdev, 115 struct reg_sched_payload **payload) 116 { 117 *payload = qdf_mem_malloc(sizeof(**payload)); 118 if (*payload) { 119 (*payload)->psoc = psoc; 120 (*payload)->pdev = pdev; 121 } 122 } 123 124 /** 125 * reg_chan_change_flush_cbk_sb() - Flush south bound channel change callbacks. 126 * @msg: Pointer to scheduler msg structure. 127 */ 128 static QDF_STATUS reg_chan_change_flush_cbk_sb(struct scheduler_msg *msg) 129 { 130 struct reg_sched_payload *load = msg->bodyptr; 131 struct wlan_objmgr_psoc *psoc = load->psoc; 132 struct wlan_objmgr_pdev *pdev = load->pdev; 133 134 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_SB_ID); 135 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_SB_ID); 136 qdf_mem_free(load); 137 138 return QDF_STATUS_SUCCESS; 139 } 140 141 /** 142 * reg_sched_chan_change_cbks_sb() - Schedule south bound channel change 143 * callbacks. 144 * @msg: Pointer to scheduler msg structure. 145 */ 146 static QDF_STATUS reg_sched_chan_change_cbks_sb(struct scheduler_msg *msg) 147 { 148 struct reg_sched_payload *load = msg->bodyptr; 149 struct wlan_objmgr_psoc *psoc = load->psoc; 150 struct wlan_objmgr_pdev *pdev = load->pdev; 151 152 reg_call_chan_change_cbks(psoc, pdev); 153 154 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_SB_ID); 155 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_SB_ID); 156 qdf_mem_free(load); 157 158 return QDF_STATUS_SUCCESS; 159 } 160 161 /** 162 * reg_chan_change_flush_cbk_nb() - Flush north bound channel change callbacks. 163 * @msg: Pointer to scheduler msg structure. 164 */ 165 static QDF_STATUS reg_chan_change_flush_cbk_nb(struct scheduler_msg *msg) 166 { 167 struct reg_sched_payload *load = msg->bodyptr; 168 struct wlan_objmgr_psoc *psoc = load->psoc; 169 struct wlan_objmgr_pdev *pdev = load->pdev; 170 171 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_NB_ID); 172 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_NB_ID); 173 qdf_mem_free(load); 174 175 return QDF_STATUS_SUCCESS; 176 } 177 178 /** 179 * reg_sched_chan_change_cbks_nb() - Schedule north bound channel change 180 * callbacks. 181 * @msg: Pointer to scheduler msg structure. 182 */ 183 static QDF_STATUS reg_sched_chan_change_cbks_nb(struct scheduler_msg *msg) 184 { 185 struct reg_sched_payload *load = msg->bodyptr; 186 struct wlan_objmgr_psoc *psoc = load->psoc; 187 struct wlan_objmgr_pdev *pdev = load->pdev; 188 189 reg_call_chan_change_cbks(psoc, pdev); 190 191 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_NB_ID); 192 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_NB_ID); 193 qdf_mem_free(load); 194 195 return QDF_STATUS_SUCCESS; 196 } 197 198 QDF_STATUS reg_send_scheduler_msg_sb(struct wlan_objmgr_psoc *psoc, 199 struct wlan_objmgr_pdev *pdev) 200 { 201 struct scheduler_msg msg = {0}; 202 struct reg_sched_payload *payload; 203 QDF_STATUS status; 204 205 status = wlan_objmgr_psoc_try_get_ref(psoc, WLAN_REGULATORY_SB_ID); 206 if (QDF_IS_STATUS_ERROR(status)) { 207 reg_err("error taking psoc ref cnt"); 208 return status; 209 } 210 211 status = wlan_objmgr_pdev_try_get_ref(pdev, WLAN_REGULATORY_SB_ID); 212 if (QDF_IS_STATUS_ERROR(status)) { 213 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_SB_ID); 214 reg_err("error taking pdev ref cnt"); 215 return status; 216 } 217 218 reg_alloc_and_fill_payload(psoc, pdev, &payload); 219 if (!payload) { 220 reg_err("payload memory alloc failed"); 221 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_SB_ID); 222 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_SB_ID); 223 return QDF_STATUS_E_NOMEM; 224 } 225 226 msg.bodyptr = payload; 227 msg.callback = reg_sched_chan_change_cbks_sb; 228 msg.flush_callback = reg_chan_change_flush_cbk_sb; 229 230 status = scheduler_post_message(QDF_MODULE_ID_REGULATORY, 231 QDF_MODULE_ID_REGULATORY, 232 QDF_MODULE_ID_TARGET_IF, &msg); 233 if (QDF_IS_STATUS_ERROR(status)) { 234 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_SB_ID); 235 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_SB_ID); 236 reg_err("scheduler msg posting failed"); 237 qdf_mem_free(payload); 238 } 239 240 return status; 241 } 242 243 QDF_STATUS reg_send_scheduler_msg_nb(struct wlan_objmgr_psoc *psoc, 244 struct wlan_objmgr_pdev *pdev) 245 { 246 struct scheduler_msg msg = {0}; 247 struct reg_sched_payload *payload; 248 QDF_STATUS status; 249 250 status = wlan_objmgr_psoc_try_get_ref(psoc, WLAN_REGULATORY_NB_ID); 251 if (QDF_IS_STATUS_ERROR(status)) { 252 reg_err("error taking psoc ref cnt"); 253 return status; 254 } 255 256 status = wlan_objmgr_pdev_try_get_ref(pdev, WLAN_REGULATORY_NB_ID); 257 if (QDF_IS_STATUS_ERROR(status)) { 258 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_NB_ID); 259 reg_err("error taking pdev ref cnt"); 260 return status; 261 } 262 263 reg_alloc_and_fill_payload(psoc, pdev, &payload); 264 if (!payload) { 265 reg_err("payload memory alloc failed"); 266 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_NB_ID); 267 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_NB_ID); 268 return QDF_STATUS_E_NOMEM; 269 } 270 msg.bodyptr = payload; 271 msg.callback = reg_sched_chan_change_cbks_nb; 272 msg.flush_callback = reg_chan_change_flush_cbk_nb; 273 274 status = scheduler_post_message(QDF_MODULE_ID_REGULATORY, 275 QDF_MODULE_ID_REGULATORY, 276 QDF_MODULE_ID_OS_IF, &msg); 277 if (QDF_IS_STATUS_ERROR(status)) { 278 wlan_objmgr_pdev_release_ref(pdev, WLAN_REGULATORY_NB_ID); 279 wlan_objmgr_psoc_release_ref(psoc, WLAN_REGULATORY_NB_ID); 280 reg_err("scheduler msg posting failed"); 281 qdf_mem_free(payload); 282 } 283 284 return status; 285 } 286 287 QDF_STATUS reg_notify_sap_event(struct wlan_objmgr_pdev *pdev, 288 bool sap_state) 289 { 290 struct wlan_regulatory_psoc_priv_obj *psoc_priv_obj; 291 struct wlan_regulatory_pdev_priv_obj *pdev_priv_obj; 292 struct wlan_objmgr_psoc *psoc; 293 QDF_STATUS status; 294 295 pdev_priv_obj = reg_get_pdev_obj(pdev); 296 297 if (!IS_VALID_PDEV_REG_OBJ(pdev_priv_obj)) { 298 reg_err("pdev reg component is NULL"); 299 return QDF_STATUS_E_INVAL; 300 } 301 302 psoc = wlan_pdev_get_psoc(pdev); 303 if (!psoc) { 304 reg_err("psoc is NULL"); 305 return QDF_STATUS_E_INVAL; 306 } 307 308 psoc_priv_obj = reg_get_psoc_obj(psoc); 309 if (!IS_VALID_PSOC_REG_OBJ(psoc_priv_obj)) { 310 reg_err("psoc reg component is NULL"); 311 return QDF_STATUS_E_INVAL; 312 } 313 314 reg_info("sap_state: %d", sap_state); 315 316 if (pdev_priv_obj->sap_state == sap_state) 317 return QDF_STATUS_SUCCESS; 318 319 pdev_priv_obj->sap_state = sap_state; 320 set_disable_channel_state(pdev_priv_obj); 321 322 reg_compute_pdev_current_chan_list(pdev_priv_obj); 323 status = reg_send_scheduler_msg_sb(psoc, pdev); 324 325 return status; 326 } 327 328 void reg_register_chan_change_callback(struct wlan_objmgr_psoc *psoc, 329 reg_chan_change_callback cbk, void *arg) 330 { 331 struct wlan_regulatory_psoc_priv_obj *psoc_priv_obj; 332 uint32_t count; 333 334 psoc_priv_obj = reg_get_psoc_obj(psoc); 335 if (!psoc_priv_obj) { 336 reg_err("reg psoc private obj is NULL"); 337 return; 338 } 339 340 qdf_spin_lock_bh(&psoc_priv_obj->cbk_list_lock); 341 for (count = 0; count < REG_MAX_CHAN_CHANGE_CBKS; count++) 342 if (!psoc_priv_obj->cbk_list[count].cbk) { 343 psoc_priv_obj->cbk_list[count].cbk = cbk; 344 psoc_priv_obj->cbk_list[count].arg = arg; 345 psoc_priv_obj->num_chan_change_cbks++; 346 break; 347 } 348 qdf_spin_unlock_bh(&psoc_priv_obj->cbk_list_lock); 349 350 if (count == REG_MAX_CHAN_CHANGE_CBKS) 351 reg_err("callback list is full, could not add the cbk"); 352 } 353 354 void reg_unregister_chan_change_callback(struct wlan_objmgr_psoc *psoc, 355 reg_chan_change_callback cbk) 356 { 357 struct wlan_regulatory_psoc_priv_obj *psoc_priv_obj; 358 uint32_t count; 359 360 psoc_priv_obj = reg_get_psoc_obj(psoc); 361 if (!psoc_priv_obj) { 362 reg_err("reg psoc private obj is NULL"); 363 return; 364 } 365 366 qdf_spin_lock_bh(&psoc_priv_obj->cbk_list_lock); 367 for (count = 0; count < REG_MAX_CHAN_CHANGE_CBKS; count++) 368 if (psoc_priv_obj->cbk_list[count].cbk == cbk) { 369 psoc_priv_obj->cbk_list[count].cbk = NULL; 370 psoc_priv_obj->num_chan_change_cbks--; 371 break; 372 } 373 qdf_spin_unlock_bh(&psoc_priv_obj->cbk_list_lock); 374 375 if (count == REG_MAX_CHAN_CHANGE_CBKS) 376 reg_err("callback not found in the list"); 377 } 378 379