| /* | |
| * Copyright (C) 2016 The Android Open Source Project | |
| * | |
| * Licensed under the Apache License, Version 2.0 (the "License"); | |
| * you may not use this file except in compliance with the License. | |
| * You may obtain a copy of the License at | |
| * | |
| * http://www.apache.org/licenses/LICENSE-2.0 | |
| * | |
| * Unless required by applicable law or agreed to in writing, software | |
| * distributed under the License is distributed on an "AS IS" BASIS, | |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| * See the License for the specific language governing permissions and | |
| * limitations under the License. | |
| */ | |
| #include <errno.h> | |
| #include "common.h" | |
| #include "roamcommand.h" | |
| #define WLAN_ROAM_MAX_NUM_WHITE_LIST 8 | |
| #define WLAN_ROAM_MAX_NUM_BLACK_LIST 16 | |
| RoamCommand::RoamCommand(wifi_handle handle, int id, u32 vendor_id, u32 subcmd) | |
| : WifiVendorCommand(handle, id, vendor_id, subcmd) | |
| { | |
| } | |
| RoamCommand::~RoamCommand() | |
| { | |
| } | |
| /* This function implements creation of Vendor command */ | |
| wifi_error RoamCommand::create() { | |
| wifi_error ret = mMsg.create(NL80211_CMD_VENDOR, 0, 0); | |
| if (ret != WIFI_SUCCESS) | |
| return ret; | |
| /* Insert the oui in the msg */ | |
| ret = mMsg.put_u32(NL80211_ATTR_VENDOR_ID, mVendor_id); | |
| if (ret != WIFI_SUCCESS) | |
| return ret; | |
| /* Insert the subcmd in the msg */ | |
| ret = mMsg.put_u32(NL80211_ATTR_VENDOR_SUBCMD, mSubcmd); | |
| if (ret != WIFI_SUCCESS) | |
| return ret; | |
| ALOGV("%s: mVendor_id = %d, Subcmd = %d.", | |
| __FUNCTION__, mVendor_id, mSubcmd); | |
| return ret; | |
| } | |
| wifi_error RoamCommand::requestResponse() | |
| { | |
| return WifiCommand::requestResponse(mMsg); | |
| } | |
| wifi_error wifi_set_bssid_blacklist(wifi_request_id id, | |
| wifi_interface_handle iface, | |
| wifi_bssid_params params) | |
| { | |
| wifi_error ret; | |
| int i; | |
| RoamCommand *roamCommand; | |
| struct nlattr *nlData, *nlBssids; | |
| interface_info *ifaceInfo = getIfaceInfo(iface); | |
| wifi_handle wifiHandle = getWifiHandle(iface); | |
| hal_info *info = getHalInfo(wifiHandle); | |
| if (!(info->supported_feature_set & WIFI_FEATURE_CONTROL_ROAMING)) { | |
| ALOGE("%s: Roaming is not supported by driver", | |
| __FUNCTION__); | |
| return WIFI_ERROR_NOT_SUPPORTED; | |
| } | |
| for (i = 0; i < params.num_bssid; i++) { | |
| ALOGV("BSSID: %d : %02x:%02x:%02x:%02x:%02x:%02x", i, | |
| params.bssids[i][0], params.bssids[i][1], | |
| params.bssids[i][2], params.bssids[i][3], | |
| params.bssids[i][4], params.bssids[i][5]); | |
| } | |
| roamCommand = | |
| new RoamCommand(wifiHandle, | |
| id, | |
| OUI_QCA, | |
| QCA_NL80211_VENDOR_SUBCMD_ROAM); | |
| if (roamCommand == NULL) { | |
| ALOGE("%s: Error roamCommand NULL", __FUNCTION__); | |
| return WIFI_ERROR_UNKNOWN; | |
| } | |
| /* Create the NL message. */ | |
| ret = roamCommand->create(); | |
| if (ret != WIFI_SUCCESS) | |
| goto cleanup; | |
| /* Set the interface Id of the message. */ | |
| ret = roamCommand->set_iface_id(ifaceInfo->name); | |
| if (ret != WIFI_SUCCESS) | |
| goto cleanup; | |
| /* Add the vendor specific attributes for the NL command. */ | |
| nlData = roamCommand->attr_start(NL80211_ATTR_VENDOR_DATA); | |
| if (!nlData) | |
| goto cleanup; | |
| ret = roamCommand->put_u32(QCA_WLAN_VENDOR_ATTR_ROAMING_SUBCMD, | |
| QCA_WLAN_VENDOR_ROAMING_SUBCMD_SET_BLACKLIST_BSSID); | |
| if (ret != WIFI_SUCCESS) | |
| goto cleanup; | |
| ret = roamCommand->put_u32( QCA_WLAN_VENDOR_ATTR_ROAMING_REQ_ID, id); | |
| if (ret != WIFI_SUCCESS) | |
| goto cleanup; | |
| ret = roamCommand->put_u32( | |
| QCA_WLAN_VENDOR_ATTR_ROAMING_PARAM_SET_BSSID_PARAMS_NUM_BSSID, | |
| params.num_bssid); | |
| if (ret != WIFI_SUCCESS) | |
| goto cleanup; | |
| nlBssids = roamCommand->attr_start( | |
| QCA_WLAN_VENDOR_ATTR_ROAMING_PARAM_SET_BSSID_PARAMS); | |
| for (i = 0; i < params.num_bssid; i++) { | |
| struct nlattr *nl_ssid = roamCommand->attr_start(i); | |
| ret = roamCommand->put_addr( | |
| QCA_WLAN_VENDOR_ATTR_ROAMING_PARAM_SET_BSSID_PARAMS_BSSID, | |
| (u8 *)params.bssids[i]); | |
| if (ret != WIFI_SUCCESS) | |
| goto cleanup; | |
| roamCommand->attr_end(nl_ssid); | |
| } | |
| roamCommand->attr_end(nlBssids); | |
| roamCommand->attr_end(nlData); | |
| ret = roamCommand->requestResponse(); | |
| if (ret != WIFI_SUCCESS) | |
| ALOGE("wifi_set_bssid_blacklist(): requestResponse Error:%d", ret); | |
| cleanup: | |
| delete roamCommand; | |
| return ret; | |
| } | |
| wifi_error wifi_set_ssid_white_list(wifi_request_id id, wifi_interface_handle iface, | |
| int num_networks, ssid_t *ssid_list) | |
| { | |
| wifi_error ret; | |
| int i; | |
| RoamCommand *roamCommand; | |
| struct nlattr *nlData, *nlSsids; | |
| interface_info *ifaceInfo = getIfaceInfo(iface); | |
| wifi_handle wifiHandle = getWifiHandle(iface); | |
| char ssid[MAX_SSID_LENGTH + 1]; | |
| ALOGV("%s: Number of SSIDs : %d", __FUNCTION__, num_networks); | |
| roamCommand = new RoamCommand( | |
| wifiHandle, | |
| id, | |
| OUI_QCA, | |
| QCA_NL80211_VENDOR_SUBCMD_ROAM); | |
| if (roamCommand == NULL) { | |
| ALOGE("%s: Failed to create object of RoamCommand class", __FUNCTION__); | |
| return WIFI_ERROR_UNKNOWN; | |
| } | |
| /* Create the NL message. */ | |
| ret = roamCommand->create(); | |
| if (ret != WIFI_SUCCESS) { | |
| ALOGE("%s: Failed to create NL message, Error: %d", __FUNCTION__, ret); | |
| goto cleanup; | |
| } | |
| /* Set the interface Id of the message. */ | |
| ret = roamCommand->set_iface_id(ifaceInfo->name); | |
| if (ret != WIFI_SUCCESS) { | |
| ALOGE("%s: Failed to set interface Id of message, Error: %d", __FUNCTION__, ret); | |
| goto cleanup; | |
| } | |
| /* Add the vendor specific attributes for the NL command. */ | |
| nlData = roamCommand->attr_start(NL80211_ATTR_VENDOR_DATA); | |
| if (!nlData) { | |
| goto cleanup; | |
| } | |
| ret = roamCommand->put_u32(QCA_WLAN_VENDOR_ATTR_ROAMING_SUBCMD, | |
| QCA_WLAN_VENDOR_ROAMING_SUBCMD_SSID_WHITE_LIST); | |
| if (ret != WIFI_SUCCESS) | |
| goto cleanup; | |
| ret = roamCommand->put_u32(QCA_WLAN_VENDOR_ATTR_ROAMING_REQ_ID, id); | |
| if (ret != WIFI_SUCCESS) | |
| goto cleanup; | |
| ret = roamCommand->put_u32(QCA_WLAN_VENDOR_ATTR_ROAMING_PARAM_WHITE_LIST_SSID_NUM_NETWORKS, | |
| num_networks); | |
| if (ret != WIFI_SUCCESS) | |
| goto cleanup; | |
| nlSsids = roamCommand->attr_start(QCA_WLAN_VENDOR_ATTR_ROAMING_PARAM_WHITE_LIST_SSID_LIST); | |
| for (i = 0; i < num_networks; i++) { | |
| struct nlattr *nl_ssid = roamCommand->attr_start(i); | |
| memcpy(ssid, ssid_list[i].ssid_str, ssid_list[i].length); | |
| ssid[ssid_list[i].length] = '\0'; | |
| ALOGV("ssid[%d] : %s", i, ssid); | |
| ret = roamCommand->put_bytes(QCA_WLAN_VENDOR_ATTR_ROAMING_PARAM_WHITE_LIST_SSID, | |
| ssid, (ssid_list[i].length + 1)); | |
| if (ret != WIFI_SUCCESS) { | |
| ALOGE("%s: Failed to add ssid atribute, Error: %d", __FUNCTION__, ret); | |
| goto cleanup; | |
| } | |
| roamCommand->attr_end(nl_ssid); | |
| } | |
| roamCommand->attr_end(nlSsids); | |
| roamCommand->attr_end(nlData); | |
| ret = roamCommand->requestResponse(); | |
| if (ret != WIFI_SUCCESS) | |
| ALOGE("%s: Failed to send request, Error:%d", __FUNCTION__, ret); | |
| cleanup: | |
| delete roamCommand; | |
| return ret; | |
| } | |
| wifi_error wifi_get_roaming_capabilities(wifi_interface_handle iface, | |
| wifi_roaming_capabilities *caps) | |
| { | |
| wifi_handle wifiHandle = getWifiHandle(iface); | |
| hal_info *info = getHalInfo(wifiHandle); | |
| if (!caps) { | |
| ALOGE("%s: Invalid Buffer provided. Exit", __FUNCTION__); | |
| return WIFI_ERROR_INVALID_ARGS; | |
| } | |
| if (!info) { | |
| ALOGE("%s: hal_info is NULL", __FUNCTION__); | |
| return WIFI_ERROR_INVALID_ARGS; | |
| } | |
| // Per WiFi HAL design, roaming feature should have nothing to do with Gscan | |
| // But for current driver impl, roaming_capa is provided as part of | |
| // GSCAN_GET_CAPABILITY query, so if Gscan is not supported, roaming_capa | |
| // is not set (uses initial value 0). | |
| // To de-couple roaming with Gscan, set default values for roaming_capa | |
| // if Gscan is not supported. | |
| // TODO: removes below if driver has new API to get roaming_capa. | |
| if (!(info->supported_feature_set & WIFI_FEATURE_GSCAN)) { | |
| info->capa.roaming_capa.max_whitelist_size = WLAN_ROAM_MAX_NUM_WHITE_LIST; | |
| info->capa.roaming_capa.max_blacklist_size = WLAN_ROAM_MAX_NUM_BLACK_LIST; | |
| } | |
| memcpy(caps, &info->capa.roaming_capa, sizeof(wifi_roaming_capabilities)); | |
| return WIFI_SUCCESS; | |
| } | |
| wifi_error wifi_configure_roaming(wifi_interface_handle iface, wifi_roaming_config *roaming_config) | |
| { | |
| wifi_error ret; | |
| int requestId; | |
| wifi_bssid_params bssid_params; | |
| wifi_handle wifiHandle = getWifiHandle(iface); | |
| hal_info *info = getHalInfo(wifiHandle); | |
| if (!roaming_config) { | |
| ALOGE("%s: Invalid Buffer provided. Exit", __FUNCTION__); | |
| return WIFI_ERROR_INVALID_ARGS; | |
| } | |
| /* No request id from caller, so generate one and pass it on to the driver. | |
| * Generate it randomly. | |
| */ | |
| requestId = get_requestid(); | |
| /* Set bssid blacklist */ | |
| if (roaming_config->num_blacklist_bssid > info->capa.roaming_capa.max_blacklist_size) { | |
| ALOGE("%s: Number of blacklist bssids(%d) provided is more than maximum blacklist bssids(%d)" | |
| " supported", __FUNCTION__, roaming_config->num_blacklist_bssid, | |
| info->capa.roaming_capa.max_blacklist_size); | |
| return WIFI_ERROR_NOT_SUPPORTED; | |
| } | |
| bssid_params.num_bssid = roaming_config->num_blacklist_bssid; | |
| memcpy(bssid_params.bssids, roaming_config->blacklist_bssid, | |
| (bssid_params.num_bssid * sizeof(mac_addr))); | |
| ret = wifi_set_bssid_blacklist(requestId, iface, bssid_params); | |
| if (ret != WIFI_SUCCESS) { | |
| ALOGE("%s: Failed to configure blacklist bssids", __FUNCTION__); | |
| return WIFI_ERROR_UNKNOWN; | |
| } | |
| /* Set ssid whitelist */ | |
| if (roaming_config->num_whitelist_ssid > info->capa.roaming_capa.max_whitelist_size) { | |
| ALOGE("%s: Number of whitelist ssid(%d) provided is more than maximum whitelist ssids(%d) " | |
| "supported", __FUNCTION__, roaming_config->num_whitelist_ssid, | |
| info->capa.roaming_capa.max_whitelist_size); | |
| return WIFI_ERROR_NOT_SUPPORTED; | |
| } | |
| ret = wifi_set_ssid_white_list(requestId, iface, roaming_config->num_whitelist_ssid, | |
| roaming_config->whitelist_ssid); | |
| if (ret != WIFI_SUCCESS) | |
| ALOGE("%s: Failed to configure whitelist ssids", __FUNCTION__); | |
| return ret; | |
| } | |
| /* Enable/disable firmware roaming */ | |
| wifi_error wifi_enable_firmware_roaming(wifi_interface_handle iface, fw_roaming_state_t state) | |
| { | |
| int requestId; | |
| wifi_error ret; | |
| RoamCommand *roamCommand; | |
| struct nlattr *nlData; | |
| interface_info *ifaceInfo = getIfaceInfo(iface); | |
| wifi_handle wifiHandle = getWifiHandle(iface); | |
| qca_roaming_policy policy; | |
| ALOGV("%s: set firmware roam state : %d", __FUNCTION__, state); | |
| if (state == ROAMING_ENABLE) { | |
| policy = QCA_ROAMING_ALLOWED_WITHIN_ESS; | |
| } else if(state == ROAMING_DISABLE) { | |
| policy = QCA_ROAMING_NOT_ALLOWED; | |
| } else { | |
| ALOGE("%s: Invalid state provided: %d. Exit \n", __FUNCTION__, state); | |
| return WIFI_ERROR_INVALID_ARGS; | |
| } | |
| /* No request id from caller, so generate one and pass it on to the driver. | |
| * Generate it randomly. | |
| */ | |
| requestId = get_requestid(); | |
| roamCommand = | |
| new RoamCommand(wifiHandle, | |
| requestId, | |
| OUI_QCA, | |
| QCA_NL80211_VENDOR_SUBCMD_ROAMING); | |
| if (roamCommand == NULL) { | |
| ALOGE("%s: Failed to create object of RoamCommand class", __FUNCTION__); | |
| return WIFI_ERROR_UNKNOWN; | |
| } | |
| /* Create the NL message. */ | |
| ret = roamCommand->create(); | |
| if (ret != WIFI_SUCCESS) { | |
| ALOGE("%s: Failed to create NL message, Error: %d", __FUNCTION__, ret); | |
| goto cleanup; | |
| } | |
| /* Set the interface Id of the message. */ | |
| ret = roamCommand->set_iface_id(ifaceInfo->name); | |
| if (ret != WIFI_SUCCESS) { | |
| ALOGE("%s: Failed to set interface Id of message, Error: %d", __FUNCTION__, ret); | |
| goto cleanup; | |
| } | |
| /* Add the vendor specific attributes for the NL command. */ | |
| nlData = roamCommand->attr_start(NL80211_ATTR_VENDOR_DATA); | |
| if (!nlData) { | |
| ret = WIFI_ERROR_UNKNOWN; | |
| goto cleanup; | |
| } | |
| ret = roamCommand->put_u32(QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY, policy); | |
| if (ret != WIFI_SUCCESS) { | |
| ALOGE("%s: Failed to add roaming policy atribute, Error: %d", __FUNCTION__, ret); | |
| goto cleanup; | |
| } | |
| roamCommand->attr_end(nlData); | |
| ret = roamCommand->requestResponse(); | |
| if (ret != WIFI_SUCCESS) | |
| ALOGE("%s: Failed to send request, Error:%d", __FUNCTION__, ret); | |
| cleanup: | |
| delete roamCommand; | |
| return ret; | |
| } |