common.h revision 115bcffc16c53e9552c09a6792666c52a633b4f2 
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
18/*
19 Vendor OUI - This is a unique identifier that identifies organization. Lets
20 code Android specific functions with Google OUI; although vendors can do more
21 with their own OUI's as well.
22 */
23
24const uint32_t GOOGLE_OUI = 0x001A11;
25/* TODO: define vendor OUI here */
26
27
28/*
29 This enum defines ranges for various commands; commands themselves
30 can be defined in respective feature headers; i.e. find gscan command
31 definitions in gscan.cpp
32 */
33
34typedef enum {
35    /* don't use 0 as a valid subcommand */
36    VENDOR_NL80211_SUBCMD_UNSPECIFIED,
37
38    /* define all vendor startup commands between 0x0 and 0x0FFF */
39    VENDOR_NL80211_SUBCMD_RANGE_START = 0x0001,
40    VENDOR_NL80211_SUBCMD_RANGE_END   = 0x0FFF,
41
42    /* define all GScan related commands between 0x1000 and 0x10FF */
43    ANDROID_NL80211_SUBCMD_GSCAN_RANGE_START = 0x1000,
44    ANDROID_NL80211_SUBCMD_GSCAN_RANGE_END   = 0x10FF,
45
46    /* define all NearbyDiscovery related commands between 0x1100 and 0x11FF */
47    ANDROID_NL80211_SUBCMD_NBD_RANGE_START = 0x1100,
48    ANDROID_NL80211_SUBCMD_NBD_RANGE_END   = 0x11FF,
49
50    /* define all RTT related commands between 0x1100 and 0x11FF */
51    ANDROID_NL80211_SUBCMD_RTT_RANGE_START = 0x1100,
52    ANDROID_NL80211_SUBCMD_RTT_RANGE_END   = 0x11FF,
53
54    ANDROID_NL80211_SUBCMD_LSTATS_RANGE_START = 0x1200,
55    ANDROID_NL80211_SUBCMD_LSTATS_RANGE_END   = 0x12FF,
56
57    /* This is reserved for future usage */
58
59} ANDROID_VENDOR_SUB_COMMAND;
60
61typedef enum {
62    BRCM_RESERVED1,
63    BRCM_RESERVED2,
64    GSCAN_EVENT_SIGNIFICANT_CHANGE_RESULTS ,
65    GSCAN_EVENT_HOTLIST_RESULTS,
66    GSCAN_EVENT_SCAN_RESULTS_AVAILABLE,
67    GSCAN_EVENT_FULL_SCAN_RESULTS,
68	RTT_EVENT_COMPLETE
69
70} WIFI_EVENT;
71
72typedef void (*wifi_internal_event_handler) (wifi_handle handle, int events);
73
74class WifiCommand;
75
76typedef struct {
77    int nl_cmd;
78    uint32_t vendor_id;
79    int vendor_subcmd;
80    nl_recvmsg_msg_cb_t cb_func;
81    void *cb_arg;
82} cb_info;
83
84typedef struct {
85    wifi_request_id id;
86    WifiCommand *cmd;
87} cmd_info;
88
89typedef struct {
90    wifi_handle handle;                             // handle to wifi data
91    char name[8+1];                                 // interface name + trailing null
92    int  id;                                        // id to use when talking to driver
93} interface_info;
94
95typedef struct {
96
97    struct nl_sock *cmd_sock;                       // command socket object
98    struct nl_sock *event_sock;                     // event socket object
99    int nl80211_family_id;                          // family id for 80211 driver
100
101    bool in_event_loop;                             // Indicates that event loop is active
102    bool clean_up;                                  // Indication to clean up the socket
103
104    wifi_internal_event_handler event_handler;      // default event handler
105    wifi_cleaned_up_handler cleaned_up_handler;     // socket cleaned up handler
106
107    cb_info *event_cb;                              // event callbacks
108    int num_event_cb;                               // number of event callbacks
109    int alloc_event_cb;                             // number of allocated callback objects
110    pthread_mutex_t cb_lock;                        // mutex for the event_cb access
111
112    cmd_info *cmd;                                  // Outstanding commands
113    int num_cmd;                                    // number of commands
114    int alloc_cmd;                                  // number of commands allocated
115
116    interface_info **interfaces;                    // array of interfaces
117    int num_interfaces;                             // number of interfaces
118
119
120    // add other details
121} hal_info;
122
123wifi_error wifi_register_handler(wifi_handle handle, int cmd, nl_recvmsg_msg_cb_t func, void *arg);
124wifi_error wifi_register_vendor_handler(wifi_handle handle,
125            uint32_t id, int subcmd, nl_recvmsg_msg_cb_t func, void *arg);
126
127void wifi_unregister_handler(wifi_handle handle, int cmd);
128void wifi_unregister_vendor_handler(wifi_handle handle, uint32_t id, int subcmd);
129
130wifi_error wifi_register_cmd(wifi_handle handle, int id, WifiCommand *cmd);
131WifiCommand *wifi_unregister_cmd(wifi_handle handle, int id);
132WifiCommand *wifi_get_cmd(wifi_handle handle, int id);
133void wifi_unregister_cmd(wifi_handle handle, WifiCommand *cmd);
134
135interface_info *getIfaceInfo(wifi_interface_handle);
136wifi_handle getWifiHandle(wifi_interface_handle handle);
137hal_info *getHalInfo(wifi_handle handle);
138hal_info *getHalInfo(wifi_interface_handle handle);
139wifi_handle getWifiHandle(hal_info *info);
140wifi_interface_handle getIfaceHandle(interface_info *info);
141
142
143// some common macros
144
145#define min(x, y)       ((x) < (y) ? (x) : (y))
146#define max(x, y)       ((x) > (y) ? (x) : (y))
147
148#endif
149
150