android wpa_supplicant 添加支持wireless tools 的driver priv 命令

   由于wpa_supplicant 不支持wireless tools(wext) 或者iw(nl80211)
的某些命令(跟wep,wpa 没关系),这样如果需要做测试比如set txpower,channel 等命令时
wpa_supplicant就不支持

   但可以通过把iw,或者wireless tool 等命令加入到wpa_supplicant
中来实现,这样的好处,可以通过wpa_cli  调用,并且上层有jni
方便界面开发

实现wext接口wireless tools 命令到wpa_supplicant方法很简单

就是把wireless tools 代码弄到wpa supplicant中

并在wpa_driver_priv_driver_cmd添加接口

android2.3.4下

方法如下:

1. 在driver_wext.c中
wpa_driver_priv_driver_cmd 函数中

修改:

 

+ extern int dispatch(void *priv, char *cmd,char *buf, size_t buf_len);
 static int wpa_driver_priv_driver_cmd( void *priv, char *cmd, char *buf, size_t buf_len )
 {
        struct wpa_driver_wext_data *drv = priv;
        int ret = -1;

        wpa_printf(MSG_DEBUG, "%s %s", __func__, cmd);
-
        if (os_strcasecmp(cmd, "start") == 0) {
                wpa_printf(MSG_DEBUG,"Start command");
                return (ret);
@@ -2723,6 +2724,9 @@ static int wpa_driver_priv_driver_cmd( void *priv, char *cmd, char *buf, size_t
        }
        else if( os_strcasecmp(cmd, "btcoexstat") == 0 ) {
        }
+ else if( (ret = dispatch(priv,cmd, buf, buf_len)) >= 0){
+ return ret;
+ }
        else {
                wpa_printf(MSG_DEBUG,"Unsupported command");
        }

添加一个dispatch 命令接口

2. 将wrieless tools中iwconfig 部分内容移植过来
    添加文件 如附件

 driver_cmd.zip   
    然后将加的文件 加到wpa_supplicant 目录下的andorid.mk 中

3. 测试
  
   进入wpa_cli 输入
   driver get:命令
   driver set:命令=value

命令字 可选iwconfig 中下面结构中第1个feild

 

static const struct iwconfig_entry iwconfig_cmds[] = {
    { "essid",        set_essid_info,        1,    SIOCSIWESSID,
        "Set ESSID",

    "{NNN|any|on|off}" },
    { "mode",        set_mode_info,        1,    SIOCSIWMODE,
    "Set Mode",            "{managed|ad-

hoc|master|...}" },
    { "freq",        set_freq_info,        1,    SIOCSIWFREQ,
    "Set Frequency",        "N.NNN[k|M|G]" },
    {

"channel",        set_freq_info,        1,    SIOCSIWFREQ,
    "Set Frequency",        "N" },
    { "bit",        set_bitrate_info,

1,    SIOCSIWRATE,
    "Set Bit Rate",            "{N[k|M|G]|auto|fixed}" },
    { "rate",        set_bitrate_info,    1,    SIOCSIWRATE,


"Set Bit Rate",            "{N[k|M|G]|auto|fixed}" },
    { "power",        set_power_info,        1,    SIOCSIWPOWER,
    "Set Power

Management",        "{period N|timeout N|saving N|off}" },
#ifndef WE_ESSENTIAL
    { "nickname",        set_nick_info,        1,

SIOCSIWNICKN,
    "Set Nickname",            "NNN" },
    { "nwid",        set_nwid_info,        1,    SIOCSIWNWID,
    "Set NWID",

    "{NN|on|off}" },
#ifdef USE_ADDRESS_SUBROUTINES
    { "ap",        set_apaddr_info,    1,    SIOCSIWAP,
    "Set AP Address",

"{N|off|auto}" },
#endif
    { "txpower",        set_txpower_info,    1,    SIOCSIWTXPOW,
    "Set Tx Power",

"{NmW|NdBm|off|auto}" },
    { "sens",        set_sens_info,        1,    SIOCSIWSENS,
    "Set Sensitivity",        "N" },
    { "retry",

    set_retry_info,        1,    SIOCSIWRETRY,
    "Set Retry Limit",        "{limit N|lifetime N}" },
    { "rts",        set_rts_info,

    1,    SIOCSIWRTS,
    "Set RTS Threshold",        "{N|auto|fixed|off}" },
    { "frag",        set_frag_info,        1,

SIOCSIWFRAG,
    "Set Fragmentation Threshold",    "{N|auto|fixed|off}" },
    { "modulation",    set_modulation_info,    1,    SIOCGIWMODUL,
    "Set

Modulation",        "{11g|11a|CCK|OFDMg|...}" },
#endif    /* WE_ESSENTIAL */
    { "commit",        set_commit_info,    0,

SIOCSIWCOMMIT,
    "Commit changes",        "" },
    { NULL, NULL, 0, 0, NULL, NULL },
};

比如tx-power

取值
  driver get:txpower  

设置

  driver get:txpower=20

4.nl80211 driver priv命令的实现
  同样把 iw  部分代码,修改下支持dispatch接口
  另外需要libnl ,需要将其build成android native lib