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