1 /* 2 * Copyright (c) 2017-2018 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: contains scan south bound interface definitions 21 */ 22 23 #include <wlan_cmn.h> 24 #include <qdf_list.h> 25 #include "../../core/src/wlan_scan_main.h" 26 #include <wlan_scan_utils_api.h> 27 #include <wlan_scan_ucfg_api.h> 28 #include <wlan_scan_tgt_api.h> 29 #include <wlan_objmgr_cmn.h> 30 #include <wlan_lmac_if_def.h> 31 #include <wlan_objmgr_psoc_obj.h> 32 #include <wlan_objmgr_pdev_obj.h> 33 #include <wlan_objmgr_vdev_obj.h> 34 #include <../../core/src/wlan_scan_manager.h> 35 36 static inline struct wlan_lmac_if_scan_tx_ops * 37 wlan_psoc_get_scan_txops(struct wlan_objmgr_psoc *psoc) 38 { 39 return &((psoc->soc_cb.tx_ops.scan)); 40 } 41 42 static inline struct wlan_lmac_if_scan_tx_ops * 43 wlan_vdev_get_scan_txops(struct wlan_objmgr_vdev *vdev) 44 { 45 struct wlan_objmgr_psoc *psoc = NULL; 46 47 psoc = wlan_vdev_get_psoc(vdev); 48 if (!psoc) { 49 scm_err("NULL psoc"); 50 return NULL; 51 } 52 53 return wlan_psoc_get_scan_txops(psoc); 54 } 55 56 static inline struct wlan_lmac_if_scan_rx_ops * 57 wlan_vdev_get_scan_rxops(struct wlan_objmgr_vdev *vdev) 58 { 59 struct wlan_objmgr_psoc *psoc = NULL; 60 61 psoc = wlan_vdev_get_psoc(vdev); 62 if (!psoc) { 63 scm_err("NULL psoc"); 64 return NULL; 65 } 66 67 return &((psoc->soc_cb.rx_ops.scan)); 68 } 69 70 #ifdef FEATURE_WLAN_SCAN_PNO 71 72 QDF_STATUS tgt_scan_pno_start(struct wlan_objmgr_vdev *vdev, 73 struct pno_scan_req_params *req) 74 { 75 struct wlan_lmac_if_scan_tx_ops *scan_ops; 76 struct wlan_objmgr_psoc *psoc; 77 78 psoc = wlan_vdev_get_psoc(vdev); 79 80 scan_ops = wlan_psoc_get_scan_txops(psoc); 81 /* invoke wmi_unified_pno_start_cmd() */ 82 QDF_ASSERT(scan_ops->pno_start); 83 if (scan_ops->pno_start) 84 return scan_ops->pno_start(psoc, req); 85 86 return QDF_STATUS_SUCCESS; 87 } 88 89 QDF_STATUS tgt_scan_pno_stop(struct wlan_objmgr_vdev *vdev, 90 uint8_t vdev_id) 91 { 92 struct wlan_lmac_if_scan_tx_ops *scan_ops; 93 struct wlan_objmgr_psoc *psoc; 94 95 psoc = wlan_vdev_get_psoc(vdev); 96 97 scan_ops = wlan_psoc_get_scan_txops(psoc); 98 /* invoke wmi_unified_pno_stop_cmd() */ 99 QDF_ASSERT(scan_ops->pno_stop); 100 if (scan_ops->pno_stop) 101 return scan_ops->pno_stop(psoc, vdev_id); 102 103 return QDF_STATUS_SUCCESS; 104 } 105 #endif 106 107 QDF_STATUS 108 tgt_scan_start(struct scan_start_request *req) 109 { 110 struct wlan_lmac_if_scan_tx_ops *scan_ops; 111 struct wlan_objmgr_psoc *psoc; 112 struct wlan_objmgr_vdev *vdev = req->vdev; 113 114 psoc = wlan_vdev_get_psoc(vdev); 115 116 scan_ops = wlan_psoc_get_scan_txops(psoc); 117 /* invoke wmi_unified_scan_start_cmd_send() */ 118 QDF_ASSERT(scan_ops->scan_start); 119 if (scan_ops->scan_start) 120 return scan_ops->scan_start(psoc, req); 121 else 122 return QDF_STATUS_SUCCESS; 123 } 124 125 126 QDF_STATUS 127 tgt_scan_cancel(struct scan_cancel_request *req) 128 { 129 struct wlan_lmac_if_scan_tx_ops *scan_ops; 130 struct wlan_objmgr_psoc *psoc; 131 struct wlan_objmgr_vdev *vdev = req->vdev; 132 133 psoc = wlan_vdev_get_psoc(vdev); 134 135 scan_ops = wlan_psoc_get_scan_txops(psoc); 136 /* invoke wmi_unified_scan_stop_cmd_send() */ 137 QDF_ASSERT(scan_ops->scan_cancel); 138 if (scan_ops->scan_cancel) 139 return scan_ops->scan_cancel(psoc, &(req->cancel_req)); 140 else 141 return QDF_STATUS_SUCCESS; 142 } 143 144 QDF_STATUS 145 tgt_scan_register_ev_handler(struct wlan_objmgr_psoc *psoc) 146 { 147 struct wlan_lmac_if_scan_tx_ops *scan_ops = NULL; 148 149 scan_ops = wlan_psoc_get_scan_txops(psoc); 150 /* invoke wmi_unified_register_event_handler() 151 * since event id, handler function and context is 152 * already known to offload lmac, passing NULL as argument. 153 * DA can pass necessary arguments by clubing then into 154 * some structure. 155 */ 156 QDF_ASSERT(scan_ops->scan_reg_ev_handler); 157 if (scan_ops->scan_reg_ev_handler) 158 return scan_ops->scan_reg_ev_handler(psoc, NULL); 159 else 160 return QDF_STATUS_SUCCESS; 161 } 162 163 QDF_STATUS 164 tgt_scan_unregister_ev_handler(struct wlan_objmgr_psoc *psoc) 165 { 166 struct wlan_lmac_if_scan_tx_ops *scan_ops = NULL; 167 168 scan_ops = wlan_psoc_get_scan_txops(psoc); 169 /* invoke wmi_unified_register_event_handler() 170 * since event id, handler function and context is 171 * already known to offload lmac, passing NULL as argument. 172 * DA can pass necessary arguments by clubing then into 173 * some structure. 174 */ 175 QDF_ASSERT(scan_ops->scan_unreg_ev_handler); 176 if (scan_ops->scan_unreg_ev_handler) 177 return scan_ops->scan_unreg_ev_handler(psoc, NULL); 178 else 179 return QDF_STATUS_SUCCESS; 180 } 181 182 QDF_STATUS 183 tgt_scan_event_handler(struct wlan_objmgr_psoc *psoc, 184 struct scan_event_info *event_info) 185 { 186 struct scheduler_msg msg = {0}; 187 struct scan_event *event = &event_info->event; 188 uint8_t vdev_id = event->vdev_id; 189 QDF_STATUS status; 190 191 if (!psoc || !event_info) { 192 scm_err("psoc: 0x%pK, event_info: 0x%pK", psoc, event_info); 193 return QDF_STATUS_E_NULL_VALUE; 194 } 195 scm_info("vdev: %d, type: %d, reason: %d, freq: %d, req: %d, scanid: %d", 196 vdev_id, event->type, event->reason, event->chan_freq, 197 event->requester, event->scan_id); 198 199 event_info->vdev = 200 wlan_objmgr_get_vdev_by_id_from_psoc(psoc, 201 vdev_id, WLAN_SCAN_ID); 202 if (!event_info->vdev) { 203 scm_err("null vdev, vdev_id: %d, psoc: 0x%pK", vdev_id, psoc); 204 return QDF_STATUS_E_INVAL; 205 } 206 msg.bodyptr = event_info; 207 msg.callback = scm_scan_event_handler; 208 msg.flush_callback = scm_scan_event_flush_callback; 209 210 status = scheduler_post_msg(QDF_MODULE_ID_TARGET_IF, &msg); 211 if (QDF_IS_STATUS_ERROR(status)) { 212 wlan_objmgr_vdev_release_ref(event_info->vdev, WLAN_SCAN_ID); 213 } 214 215 return status; 216 } 217 218 QDF_STATUS tgt_scan_bcn_probe_rx_callback(struct wlan_objmgr_psoc *psoc, 219 struct wlan_objmgr_peer *peer, qdf_nbuf_t buf, 220 struct mgmt_rx_event_params *rx_param, 221 enum mgmt_frame_type frm_type) 222 { 223 struct scheduler_msg msg = {0}; 224 struct scan_bcn_probe_event *bcn; 225 QDF_STATUS status; 226 227 if ((frm_type != MGMT_PROBE_RESP) && 228 (frm_type != MGMT_BEACON)) { 229 scm_err("frame is not beacon or probe resp"); 230 qdf_nbuf_free(buf); 231 return QDF_STATUS_E_INVAL; 232 } 233 bcn = qdf_mem_malloc(sizeof(*bcn)); 234 235 if (!bcn) { 236 scm_err("Failed to allocate memory for bcn"); 237 qdf_nbuf_free(buf); 238 return QDF_STATUS_E_NOMEM; 239 } 240 bcn->rx_data = 241 qdf_mem_malloc(sizeof(*rx_param)); 242 if (!bcn->rx_data) { 243 scm_err("Failed to allocate memory for rx_data"); 244 qdf_mem_free(bcn); 245 qdf_nbuf_free(buf); 246 return QDF_STATUS_E_NOMEM; 247 } 248 249 if (frm_type == MGMT_PROBE_RESP) 250 bcn->frm_type = MGMT_SUBTYPE_PROBE_RESP; 251 else 252 bcn->frm_type = MGMT_SUBTYPE_BEACON; 253 254 status = wlan_objmgr_psoc_try_get_ref(psoc, WLAN_SCAN_ID); 255 if (QDF_IS_STATUS_ERROR(status)) { 256 scm_info("unable to get reference"); 257 qdf_mem_free(bcn->rx_data); 258 qdf_mem_free(bcn); 259 qdf_nbuf_free(buf); 260 return status; 261 } 262 263 bcn->psoc = psoc; 264 bcn->buf = buf; 265 qdf_mem_copy(bcn->rx_data, rx_param, sizeof(*rx_param)); 266 267 msg.bodyptr = bcn; 268 msg.callback = scm_handle_bcn_probe; 269 msg.flush_callback = scm_bcn_probe_flush_callback; 270 271 status = scheduler_post_msg(QDF_MODULE_ID_TARGET_IF, &msg); 272 273 if (!QDF_IS_STATUS_SUCCESS(status)) { 274 wlan_objmgr_psoc_release_ref(psoc, WLAN_SCAN_ID); 275 scm_err("failed to post to QDF_MODULE_ID_TARGET_IF"); 276 qdf_mem_free(bcn->rx_data); 277 qdf_mem_free(bcn); 278 qdf_nbuf_free(buf); 279 } 280 281 return status; 282 } 283 284 QDF_STATUS 285 tgt_scan_set_max_active_scans(struct wlan_objmgr_psoc *psoc, 286 uint32_t max_active_scans) 287 { 288 struct scan_default_params *scan_params = NULL; 289 290 if (!psoc) { 291 scm_err("null psoc"); 292 return QDF_STATUS_E_NULL_VALUE; 293 } 294 295 scan_params = wlan_scan_psoc_get_def_params(psoc); 296 if (!scan_params) { 297 scm_err("wlan_scan_psoc_get_def_params returned NULL"); 298 return QDF_STATUS_E_NULL_VALUE; 299 } 300 301 scan_params->max_active_scans_allowed = max_active_scans; 302 303 return QDF_STATUS_SUCCESS; 304 } 305