1 /* 2 * Copyright (C) 2014 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 "wifi_hal.h" 18 19 #ifndef __WIFI_HAL_COMMON_H__ 20 #define __WIFI_HAL_COMMON_H__ 21 22 #ifndef LOG_TAG 23 #define LOG_TAG "WifiHAL" 24 #endif 25 26 #include <stdint.h> 27 #include <fcntl.h> 28 #include <inttypes.h> 29 #include <sys/socket.h> 30 #include <sys/un.h> 31 #include <netlink/genl/genl.h> 32 #include <netlink/genl/family.h> 33 #include <netlink/genl/ctrl.h> 34 #include <linux/rtnetlink.h> 35 #include <netpacket/packet.h> 36 #include <linux/filter.h> 37 #include <linux/errqueue.h> 38 39 #include <linux/pkt_sched.h> 40 #include <netlink/object-api.h> 41 #include <netlink/netlink.h> 42 #include <netlink/socket.h> 43 44 #include "nl80211_copy.h" 45 46 #include <utils/Log.h> 47 #include "rb_wrapper.h" 48 #include "pkt_stats.h" 49 #include "wifihal_internal.h" 50 #include "qca-vendor_copy.h" 51 52 #define SOCKET_BUFFER_SIZE (32768U) 53 #define RECV_BUF_SIZE (4096) 54 #define DEFAULT_EVENT_CB_SIZE (64) 55 #define NUM_RING_BUFS 5 56 57 #define WIFI_HAL_CTRL_IFACE "/dev/socket/wifihal/wifihal_ctrlsock" 58 59 #define MAC_ADDR_ARRAY(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5] 60 #define MAC_ADDR_STR "%02x:%02x:%02x:%02x:%02x:%02x" 61 #define BIT(x) (1 << (x)) 62 63 typedef int16_t s16; 64 typedef int32_t s32; 65 typedef int64_t s64; 66 67 typedef void (*wifi_internal_event_handler) (wifi_handle handle, int events); 68 69 class WifiCommand; 70 71 typedef struct { 72 int nl_cmd; 73 uint32_t vendor_id; 74 int vendor_subcmd; 75 nl_recvmsg_msg_cb_t cb_func; 76 void *cb_arg; 77 } cb_info; 78 79 typedef struct { 80 wifi_request_id id; 81 WifiCommand *cmd; 82 } cmd_info; 83 84 typedef struct { 85 wifi_handle handle; // handle to wifi data 86 char name[IFNAMSIZ+1]; // interface name + trailing null 87 int id; // id to use when talking to driver 88 } interface_info; 89 90 typedef struct { 91 wifi_gscan_capabilities gscan_capa; 92 wifi_roaming_capabilities roaming_capa; 93 } wifi_capa; 94 95 typedef struct { 96 u8 *flags; 97 size_t flags_len; 98 } features_info; 99 100 enum pkt_log_version { 101 PKT_LOG_V0 = 0, // UNSPECIFIED Target 102 PKT_LOG_V1 = 1, // ROME Base Target 103 PKT_LOG_V2 = 2, // HELIUM Base Target 104 PKT_LOG_V3 = 3, // LETHIUM Base target 105 }; 106 107 struct gscan_event_handlers_s; 108 struct rssi_monitor_event_handler_s; 109 struct cld80211_ctx; 110 111 struct ctrl_sock { 112 int s; 113 struct sockaddr_un local; 114 }; 115 116 typedef struct hal_info_s { 117 118 struct nl_sock *cmd_sock; // command socket object 119 struct nl_sock *event_sock; // event socket object 120 struct nl_sock *user_sock; // user socket object 121 struct ctrl_sock wifihal_ctrl_sock; // ctrl sock object 122 struct list_head monitor_sockets; // list of monitor sockets 123 int nl80211_family_id; // family id for 80211 driver 124 125 bool in_event_loop; // Indicates that event loop is active 126 bool clean_up; // Indication to clean up the socket 127 128 wifi_internal_event_handler event_handler; // default event handler 129 wifi_cleaned_up_handler cleaned_up_handler; // socket cleaned up handler 130 131 cb_info *event_cb; // event callbacks 132 int num_event_cb; // number of event callbacks 133 int alloc_event_cb; // number of allocated callback objects 134 pthread_mutex_t cb_lock; // mutex for the event_cb access 135 136 interface_info **interfaces; // array of interfaces 137 int num_interfaces; // number of interfaces 138 139 feature_set supported_feature_set; 140 /* driver supported features defined by enum qca_wlan_vendor_features that 141 can be queried by vendor command QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES */ 142 features_info driver_supported_features; 143 u32 supported_logger_feature_set; 144 // add other details 145 int user_sock_arg; 146 int event_sock_arg; 147 struct rb_info rb_infos[NUM_RING_BUFS]; 148 void (*on_ring_buffer_data) (char *ring_name, char *buffer, int buffer_size, 149 wifi_ring_buffer_status *status); 150 void (*on_alert) (wifi_request_id id, char *buffer, int buffer_size, int err_code); 151 struct pkt_stats_s *pkt_stats; 152 153 /* socket pair used to exit from blocking poll*/ 154 int exit_sockets[2]; 155 u32 rx_buf_size_allocated; 156 u32 rx_buf_size_occupied; 157 wifi_ring_buffer_entry *rx_aggr_pkts; 158 rx_aggr_stats aggr_stats; 159 u32 prev_seq_no; 160 // pointer to structure having various gscan_event_handlers 161 struct gscan_event_handlers_s *gscan_handlers; 162 /* mutex for the log_handler access*/ 163 pthread_mutex_t lh_lock; 164 /* mutex for the alert_handler access*/ 165 pthread_mutex_t ah_lock; 166 u32 firmware_bus_max_size; 167 bool fate_monitoring_enabled; 168 packet_fate_monitor_info *pkt_fate_stats; 169 /* mutex for the packet fate stats shared resource protection */ 170 pthread_mutex_t pkt_fate_stats_lock; 171 struct rssi_monitor_event_handler_s *rssi_handlers; 172 wifi_capa capa; 173 struct cld80211_ctx *cldctx; 174 bool apf_enabled; 175 pkt_log_version pkt_log_ver; 176 } hal_info; 177 178 wifi_error wifi_register_handler(wifi_handle handle, int cmd, nl_recvmsg_msg_cb_t func, void *arg); 179 wifi_error wifi_register_vendor_handler(wifi_handle handle, 180 uint32_t id, int subcmd, nl_recvmsg_msg_cb_t func, void *arg); 181 182 void wifi_unregister_handler(wifi_handle handle, int cmd); 183 void wifi_unregister_vendor_handler(wifi_handle handle, uint32_t id, int subcmd); 184 185 interface_info *getIfaceInfo(wifi_interface_handle); 186 wifi_handle getWifiHandle(wifi_interface_handle handle); 187 hal_info *getHalInfo(wifi_handle handle); 188 hal_info *getHalInfo(wifi_interface_handle handle); 189 wifi_handle getWifiHandle(hal_info *info); 190 wifi_interface_handle getIfaceHandle(interface_info *info); 191 wifi_error initializeGscanHandlers(hal_info *info); 192 wifi_error cleanupGscanHandlers(hal_info *info); 193 wifi_error initializeRSSIMonitorHandler(hal_info *info); 194 wifi_error cleanupRSSIMonitorHandler(hal_info *info); 195 196 lowi_cb_table_t *getLowiCallbackTable(u32 requested_lowi_capabilities); 197 198 wifi_error wifi_start_sending_offloaded_packet(wifi_request_id id, 199 wifi_interface_handle iface, u16 ether_type, u8 *ip_packet, 200 u16 ip_packet_len, u8 *src_mac_addr, u8 *dst_mac_addr, u32 period_msec); 201 wifi_error wifi_stop_sending_offloaded_packet(wifi_request_id id, 202 wifi_interface_handle iface); 203 wifi_error wifi_start_rssi_monitoring(wifi_request_id id, wifi_interface_handle 204 iface, s8 max_rssi, s8 min_rssi, wifi_rssi_event_handler eh); 205 wifi_error wifi_stop_rssi_monitoring(wifi_request_id id, wifi_interface_handle iface); 206 wifi_error wifi_set_radio_mode_change_handler(wifi_request_id id, wifi_interface_handle 207 iface, wifi_radio_mode_change_handler eh); 208 wifi_error mapKernelErrortoWifiHalError(int kern_err); 209 // some common macros 210 211 #define min(x, y) ((x) < (y) ? (x) : (y)) 212 #define max(x, y) ((x) > (y) ? (x) : (y)) 213 214 #define REQUEST_ID_MAX 1000 215 #define get_requestid() ((arc4random()%REQUEST_ID_MAX) + 1) 216 #define WAIT_TIME_FOR_SET_REG_DOMAIN 50000 217 218 #ifndef UNUSED 219 #define UNUSED(x) (void)(x) 220 #endif 221 222 #ifdef __cplusplus 223 extern "C" 224 { 225 #endif /* __cplusplus */ 226 void hexdump(void *bytes, u16 len); 227 u8 get_rssi(u8 rssi_wo_noise_floor); 228 #ifdef __cplusplus 229 } 230 #endif /* __cplusplus */ 231 232 #endif 233 234