1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Portions copyright (C) 2017 Broadcom Limited 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 #include <stdint.h> 20 #include <fcntl.h> 21 #include <sys/socket.h> 22 #include <netlink/genl/genl.h> 23 #include <netlink/genl/family.h> 24 #include <netlink/genl/ctrl.h> 25 #include <linux/rtnetlink.h> 26 #include <netpacket/packet.h> 27 #include <linux/filter.h> 28 #include <linux/errqueue.h> 29 30 #include <linux/pkt_sched.h> 31 #include <netlink/object-api.h> 32 #include <netlink/netlink.h> 33 #include <netlink/socket.h> 34 #include <netlink/handlers.h> 35 36 #include "sync.h" 37 38 #define LOG_TAG "WifiHAL" 39 40 #include <log/log.h> 41 42 #include "wifi_hal.h" 43 #include "common.h" 44 #include "cpp_bindings.h" 45 46 /* Internal radio statistics structure in the driver */ 47 typedef struct { 48 wifi_radio radio; 49 uint32_t on_time; 50 uint32_t tx_time; 51 uint32_t rx_time; 52 uint32_t on_time_scan; 53 uint32_t on_time_nbd; 54 uint32_t on_time_gscan; 55 uint32_t on_time_roam_scan; 56 uint32_t on_time_pno_scan; 57 uint32_t on_time_hs20; 58 uint32_t num_channels; 59 wifi_channel_stat channels[]; 60 } wifi_radio_stat_internal; 61 62 enum { 63 LSTATS_SUBCMD_GET_INFO = ANDROID_NL80211_SUBCMD_LSTATS_RANGE_START, 64 }; 65 66 class GetLinkStatsCommand : public WifiCommand 67 { 68 wifi_stats_result_handler mHandler; 69 public: 70 GetLinkStatsCommand(wifi_interface_handle iface, wifi_stats_result_handler handler) 71 : WifiCommand("GetLinkStatsCommand", iface, 0), mHandler(handler) 72 { } 73 74 virtual int create() { 75 // ALOGI("Creating message to get link statistics; iface = %d", mIfaceInfo->id); 76 77 int ret = mMsg.create(GOOGLE_OUI, LSTATS_SUBCMD_GET_INFO); 78 if (ret < 0) { 79 ALOGE("Failed to create %x - %d", LSTATS_SUBCMD_GET_INFO, ret); 80 return ret; 81 } 82 83 return ret; 84 } 85 86 protected: 87 virtual int handleResponse(WifiEvent& reply) { 88 89 // ALOGI("In GetLinkStatsCommand::handleResponse"); 90 91 if (reply.get_cmd() != NL80211_CMD_VENDOR) { 92 ALOGD("Ignoring reply with cmd = %d", reply.get_cmd()); 93 return NL_SKIP; 94 } 95 96 int id = reply.get_vendor_id(); 97 int subcmd = reply.get_vendor_subcmd(); 98 99 // ALOGI("Id = %0x, subcmd = %d", id, subcmd); 100 101 void *data = reply.get_vendor_data(); 102 int len = reply.get_vendor_data_len(); 103 wifi_radio_stat *radio_stat = 104 convertToExternalRadioStatStructure((wifi_radio_stat_internal *)data); 105 if (!radio_stat) { 106 ALOGE("Invalid stats pointer received"); 107 return NL_SKIP; 108 } 109 if (radio_stat->num_channels > 11) { 110 ALOGE("Incorrect number of channels = %d", radio_stat->num_channels); 111 // dump data before num_channels 112 ALOGE("radio: = %d", radio_stat->radio); 113 ALOGE("on_time: = %d", radio_stat->on_time); 114 ALOGE("tx_time: = %d", radio_stat->tx_time); 115 ALOGE("rx_time: = %d", radio_stat->rx_time); 116 ALOGE("on_time_scan: = %d", radio_stat->on_time_scan); 117 ALOGE("on_time_nbd: = %d", radio_stat->on_time_nbd); 118 ALOGE("on_time_gscan: = %d", radio_stat->on_time_gscan); 119 ALOGE("on_time_pno_scan: = %d", radio_stat->on_time_pno_scan); 120 ALOGE("on_time_hs20: = %d", radio_stat->on_time_hs20); 121 free(radio_stat); 122 return NL_SKIP; 123 } 124 wifi_iface_stat *iface_stat = 125 (wifi_iface_stat *)((char *)&((wifi_radio_stat_internal *)data)->channels 126 + radio_stat->num_channels * sizeof(wifi_channel_stat)); 127 (*mHandler.on_link_stats_results)(id, iface_stat, 1, radio_stat); 128 free(radio_stat); 129 return NL_OK; 130 } 131 132 private: 133 wifi_radio_stat *convertToExternalRadioStatStructure(wifi_radio_stat_internal *internal_stat_ptr) { 134 wifi_radio_stat *external_stat_ptr = NULL; 135 if (internal_stat_ptr) { 136 uint32_t channel_size = internal_stat_ptr->num_channels * sizeof(wifi_channel_stat); 137 uint32_t total_size = sizeof(wifi_radio_stat) + channel_size; 138 external_stat_ptr = (wifi_radio_stat *)malloc(total_size); 139 if (external_stat_ptr) { 140 external_stat_ptr->radio = internal_stat_ptr->radio; 141 external_stat_ptr->on_time = internal_stat_ptr->on_time; 142 external_stat_ptr->tx_time = internal_stat_ptr->tx_time; 143 external_stat_ptr->rx_time = internal_stat_ptr->rx_time; 144 external_stat_ptr->tx_time_per_levels = NULL; 145 external_stat_ptr->num_tx_levels = 0; 146 external_stat_ptr->on_time_scan = internal_stat_ptr->on_time_scan; 147 external_stat_ptr->on_time_nbd = internal_stat_ptr->on_time_nbd; 148 external_stat_ptr->on_time_gscan = internal_stat_ptr->on_time_gscan; 149 external_stat_ptr->on_time_roam_scan = internal_stat_ptr->on_time_roam_scan; 150 external_stat_ptr->on_time_pno_scan = internal_stat_ptr->on_time_pno_scan; 151 external_stat_ptr->on_time_hs20 = internal_stat_ptr->on_time_hs20; 152 external_stat_ptr->num_channels = internal_stat_ptr->num_channels; 153 if (internal_stat_ptr->num_channels) { 154 memcpy(&(external_stat_ptr->channels), &(internal_stat_ptr->channels), 155 channel_size); 156 } 157 } 158 } 159 return external_stat_ptr; 160 } 161 }; 162 163 wifi_error wifi_get_link_stats(wifi_request_id id, 164 wifi_interface_handle iface, wifi_stats_result_handler handler) 165 { 166 GetLinkStatsCommand command(iface, handler); 167 return (wifi_error) command.requestResponse(); 168 } 169 170 wifi_error wifi_set_link_stats( 171 wifi_interface_handle /* iface */, wifi_link_layer_params /* params */) 172 { 173 /* Return success here since bcom HAL does not need set link stats. */ 174 return WIFI_SUCCESS; 175 } 176 177 wifi_error wifi_clear_link_stats( 178 wifi_interface_handle /* iface */, u32 /* stats_clear_req_mask */, 179 u32 * /* stats_clear_rsp_mask */, u8 /* stop_req */, u8 * /* stop_rsp */) 180 { 181 /* Return success here since bcom HAL does not support clear link stats. */ 182 return WIFI_SUCCESS; 183 } 184
