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