1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <algorithm>
18
19 #include "chre/apps/wifi_offload/chre_scan_params_safe.h"
20 #include "chre/apps/wifi_offload/utility.h"
21
22 namespace wifi_offload {
23
ChreScanParamsSafe(const ScanParams & scan_params)24 ChreScanParamsSafe::ChreScanParamsSafe(const ScanParams &scan_params) {
25 // point chre_scan_params_ pointers to allocated buffers
26 chre_scan_params_.frequencyList = chre_scan_params_frequencies_;
27 chre_scan_params_.ssidList = chre_scan_params_ssids_;
28
29 UpdateFromScanParams(scan_params);
30 }
31
GetChreWifiScanParams()32 const chreWifiScanParams *ChreScanParamsSafe::GetChreWifiScanParams() {
33 return &chre_scan_params_;
34 }
35
Log() const36 void ChreScanParamsSafe::Log() const {
37 LOGI("chreWifiScanParams:");
38 LOGI(" scan type: %" PRIu8, chre_scan_params_.scanType);
39 LOGI(" max scan age (ms): %" PRIu32, chre_scan_params_.maxScanAgeMs);
40 LOGI(" frequency list length: %" PRIu16, chre_scan_params_.frequencyListLen);
41 for (size_t i = 0; i < chre_scan_params_.frequencyListLen; i++) {
42 LOGI(" frequency: %" PRIu32, chre_scan_params_.frequencyList[i]);
43 }
44 LOGI(" ssid list length: %" PRIu8, chre_scan_params_.ssidListLen);
45 for (size_t i = 0; i < chre_scan_params_.ssidListLen; i++) {
46 utility::LogSsid(chre_scan_params_.ssidList[i].ssid,
47 chre_scan_params_.ssidList[i].ssidLen);
48 }
49 }
50
UpdateFromScanParams(const ScanParams & scan_params)51 void ChreScanParamsSafe::UpdateFromScanParams(const ScanParams &scan_params) {
52 chre_scan_params_.scanType = CHRE_WIFI_SCAN_TYPE_ACTIVE_PLUS_PASSIVE_DFS;
53 chre_scan_params_.maxScanAgeMs = 0;
54
55 chre_scan_params_.frequencyListLen = std::min(
56 static_cast<uint16_t>(scan_params.frequencies_to_scan_mhz_.size()),
57 static_cast<uint16_t>(CHRE_WIFI_FREQUENCY_LIST_MAX_LEN));
58 if (chre_scan_params_.frequencyListLen <
59 scan_params.frequencies_to_scan_mhz_.size()) {
60 LOGW("Too many ScanParams frequencies %zu truncated to max %" PRIu16,
61 scan_params.frequencies_to_scan_mhz_.size(),
62 chre_scan_params_.frequencyListLen);
63 }
64
65 std::copy(scan_params.frequencies_to_scan_mhz_.begin(),
66 scan_params.frequencies_to_scan_mhz_.begin() +
67 chre_scan_params_.frequencyListLen,
68 chre_scan_params_frequencies_);
69
70 chre_scan_params_.ssidListLen =
71 std::min(static_cast<uint8_t>(scan_params.ssids_to_scan_.size()),
72 static_cast<uint8_t>(CHRE_WIFI_SSID_LIST_MAX_LEN));
73 if (chre_scan_params_.ssidListLen < scan_params.ssids_to_scan_.size()) {
74 LOGW("Too many ScanParams ssids %zu truncated to max %" PRIu8,
75 scan_params.ssids_to_scan_.size(), chre_scan_params_.ssidListLen);
76 }
77
78 for (size_t i = 0; i < chre_scan_params_.ssidListLen; i++) {
79 scan_params.ssids_to_scan_[i].ToChreWifiSsidListItem(
80 &chre_scan_params_ssids_[i]);
81 }
82 }
83
84 } // namespace wifi_offload
85