common.h

   1
   2 #include "wifi_hal.h"
   3
   4 #ifndef __WIFI_HAL_COMMON_H__
   5 #define __WIFI_HAL_COMMON_H__
   6
   7 #define LOG_TAG  "WifiHAL"
   8
   9 #include <utils/Log.h>
  10 #include "nl80211_copy.h"
  11 #include "sync.h"
  12
  13 #define SOCKET_BUFFER_SIZE      (32768U)
  14 #define RECV_BUF_SIZE           (4096)
  15 #define DEFAULT_EVENT_CB_SIZE   (64)
  16 #define DEFAULT_CMD_SIZE        (64)
  17 #define DOT11_OUI_LEN             3
  18
  19 /*
  20  Vendor OUI - This is a unique identifier that identifies organization. Lets
  21  code Android specific functions with Google OUI; although vendors can do more
  22  with their own OUI's as well.
  23  */
  24
  25 const uint32_t GOOGLE_OUI = 0x001A11;
  26 /* TODO: define vendor OUI here */
  27
  28
  29 /*
  30  This enum defines ranges for various commands; commands themselves
  31  can be defined in respective feature headers; i.e. find gscan command
  32  definitions in gscan.cpp
  33  */
  34
  35 typedef enum {
  36     /* don't use 0 as a valid subcommand */
  37     VENDOR_NL80211_SUBCMD_UNSPECIFIED,
  38
  39     /* define all vendor startup commands between 0x0 and 0x0FFF */
  40     VENDOR_NL80211_SUBCMD_RANGE_START = 0x0001,
  41     VENDOR_NL80211_SUBCMD_RANGE_END   = 0x0FFF,
  42
  43     /* define all GScan related commands between 0x1000 and 0x10FF */
  44     ANDROID_NL80211_SUBCMD_GSCAN_RANGE_START = 0x1000,
  45     ANDROID_NL80211_SUBCMD_GSCAN_RANGE_END   = 0x10FF,
  46
  47     /* define all NearbyDiscovery related commands between 0x1100 and 0x11FF */
  48     ANDROID_NL80211_SUBCMD_NBD_RANGE_START = 0x1100,
  49     ANDROID_NL80211_SUBCMD_NBD_RANGE_END   = 0x11FF,
  50
  51     /* define all RTT related commands between 0x1100 and 0x11FF */
  52     ANDROID_NL80211_SUBCMD_RTT_RANGE_START = 0x1100,
  53     ANDROID_NL80211_SUBCMD_RTT_RANGE_END   = 0x11FF,
  54
  55     ANDROID_NL80211_SUBCMD_LSTATS_RANGE_START = 0x1200,
  56     ANDROID_NL80211_SUBCMD_LSTATS_RANGE_END   = 0x12FF,
  57
  58     /* This is reserved for future usage */
  59
  60 } ANDROID_VENDOR_SUB_COMMAND;
  61
  62 typedef enum {
  63     SLSI_NL80211_VENDOR_SUBCMD_GET_CAPABILITIES = ANDROID_NL80211_SUBCMD_GSCAN_RANGE_START,
  64     SLSI_NL80211_VENDOR_SUBCMD_GET_VALID_CHANNELS,
  65     SLSI_NL80211_VENDOR_SUBCMD_ADD_GSCAN,
  66     SLSI_NL80211_VENDOR_SUBCMD_DEL_GSCAN,
  67     SLSI_NL80211_VENDOR_SUBCMD_GET_SCAN_RESULTS,
  68     SLSI_NL80211_VENDOR_SUBCMD_SET_BSSID_HOTLIST,
  69     SLSI_NL80211_VENDOR_SUBCMD_RESET_BSSID_HOTLIST,
  70     SLSI_NL80211_VENDOR_SUBCMD_GET_HOTLIST_RESULTS,
  71     SLSI_NL80211_VENDOR_SUBCMD_SET_SIGNIFICANT_CHANGE,
  72     SLSI_NL80211_VENDOR_SUBCMD_RESET_SIGNIFICANT_CHANGE,
  73     SLSI_NL80211_VENDOR_SUBCMD_SET_GSCAN_OUI,
  74     SLSI_NL80211_VENDOR_SUBCMD_SET_NODFS
  75 } WIFI_SUB_COMMAND;
  76
  77 typedef enum {
  78     GSCAN_EVENT_SIGNIFICANT_CHANGE_RESULTS ,
  79     GSCAN_EVENT_HOTLIST_RESULTS_FOUND,
  80     GSCAN_EVENT_SCAN_RESULTS_AVAILABLE,
  81     GSCAN_EVENT_FULL_SCAN_RESULTS,
  82     GSCAN_EVENT_COMPLETE_SCAN,
  83     GSCAN_EVENT_HOTLIST_RESULTS_LOST
  84 } WIFI_EVENT;
  85
  86 typedef void (*wifi_internal_event_handler) (wifi_handle handle, int events);
  87
  88 class WifiCommand;
  89
  90 typedef struct {
  91     int nl_cmd;
  92     uint32_t vendor_id;
  93     int vendor_subcmd;
  94     nl_recvmsg_msg_cb_t cb_func;
  95     void *cb_arg;
  96 } cb_info;
  97
  98 typedef struct {
  99     wifi_request_id id;
 100     WifiCommand *cmd;
 101 } cmd_info;
 102
 103 typedef struct {
 104     wifi_handle handle;                             // handle to wifi data
 105     char name[8+1];                                 // interface name + trailing null
 106     int  id;                                        // id to use when talking to driver
 107 } interface_info;
 108
 109 typedef struct {
 110
 111     struct nl_sock *cmd_sock;                       // command socket object
 112     struct nl_sock *event_sock;                     // event socket object
 113     int nl80211_family_id;                          // family id for 80211 driver
 114
 115     bool in_event_loop;                             // Indicates that event loop is active
 116     bool clean_up;                                  // Indication to clean up the socket
 117
 118     wifi_internal_event_handler event_handler;      // default event handler
 119     wifi_cleaned_up_handler cleaned_up_handler;     // socket cleaned up handler
 120
 121     cb_info *event_cb;                              // event callbacks
 122     int num_event_cb;                               // number of event callbacks
 123     int alloc_event_cb;                             // number of allocated callback objects
 124     pthread_mutex_t cb_lock;                        // mutex for the event_cb access
 125
 126     cmd_info *cmd;                                  // Outstanding commands
 127     int num_cmd;                                    // number of commands
 128     int alloc_cmd;                                  // number of commands allocated
 129
 130     interface_info **interfaces;                    // array of interfaces
 131     int num_interfaces;                             // number of interfaces
 132
 133
 134     // add other details
 135 } hal_info;
 136
 137 wifi_error wifi_register_handler(wifi_handle handle, int cmd, nl_recvmsg_msg_cb_t func, void *arg);
 138 wifi_error wifi_register_vendor_handler(wifi_handle handle,
 139             uint32_t id, int subcmd, nl_recvmsg_msg_cb_t func, void *arg);
 140
 141 void wifi_unregister_handler(wifi_handle handle, int cmd);
 142 void wifi_unregister_vendor_handler(wifi_handle handle, uint32_t id, int subcmd);
 143
 144 wifi_error wifi_register_cmd(wifi_handle handle, int id, WifiCommand *cmd);
 145 WifiCommand *wifi_unregister_cmd(wifi_handle handle, int id);
 146 WifiCommand *wifi_get_cmd(wifi_handle handle, int id);
 147 void wifi_unregister_cmd(wifi_handle handle, WifiCommand *cmd);
 148
 149 interface_info *getIfaceInfo(wifi_interface_handle);
 150 wifi_handle getWifiHandle(wifi_interface_handle handle);
 151 hal_info *getHalInfo(wifi_handle handle);
 152 hal_info *getHalInfo(wifi_interface_handle handle);
 153 wifi_handle getWifiHandle(hal_info *info);
 154 wifi_interface_handle getIfaceHandle(interface_info *info);
 155
 156
 157 // some common macros
 158
 159 #define min(x, y)       ((x) < (y) ? (x) : (y))
 160 #define max(x, y)       ((x) > (y) ? (x) : (y))
 161
 162 #endif
 163