网站建设制作专业,啥是东莞网站优化推广,网站打不开是什么原因,做销售用什么网站iwpriv工具通过ioctl动态获取相应无线网卡驱动的private_args所有扩展参数iwpriv是处理下面的wlan_private_args的所有扩展命令,iwpriv的实现上,是这样的,mainset_privateiw_get_priv_info获取wireless网卡所能处理的所有wlan_private_args类型.dev_ioctlwext_…iwpriv工具通过ioctl动态获取相应无线网卡驱动的private_args所有扩展参数iwpriv是处理下面的wlan_private_args的所有扩展命令,iwpriv的实现上,是这样的,mainset_privateiw_get_priv_info获取wireless网卡所能处理的所有wlan_private_args类型.dev_ioctlwext_handle_ioctlwireless_process_ioctl if (cmd SIOCGIWPRIV dev-wireless_handlers) return ioctl_standard_call(dev, ifr, cmd, iw_handler_get_private);static int ioctl_standard_call(struct net_device * dev, struct ifreq * ifr, unsigned int cmd, iw_handler handler){ ... /* Call the handler */ ret handler(dev, info, (iwr-u), extra); if (user_length iwr-u.data.length) { kfree(extra); return -E2BIG;//通知iwpriv,本wifi网卡对应的private命令还没有完,还有,这样iwpriv将会继续//maxpriv默认为16,即将以16个为一组,一组一组的从wifi网卡驱动读取该网卡所能支持的所有private_args参数//newpriv realloc(priv, maxpriv * sizeof(priv[0]));继续申请,继续拷贝,知道将wifi网卡自定义的wlan_private_args参数全部//传出到iwpriv为止. } ...} /* New driver API : try to find the handler */ handler get_handler(dev, cmd);//获取 if (handler) { /* Standard and private are not the same */ if (cmd SIOCIWFIRSTPRIV) return ioctl_standard_call(dev, ifr, cmd, handler); else //如果有对应的handler,那么处理iwpriv的命令,可以我们的iwpriv都是由dev-do_ioctl完成的. return ioctl_private_call(dev, ifr, cmd, handler); } /* Old driver API : call driver ioctl handler */ if (dev-do_ioctl)//如果dev-wireless_handlers-standard和dev-wireless_handlers-private[index都不对该cmd作处理,那么由//dev-do_ioctl wlan_do_ioctl;我们驱动的最后处理函数wlan_do_ioctl处理. return dev-do_ioctl(dev, ifr, cmd);static iw_handler get_handler(struct net_device *dev, unsigned int cmd){ /* Dont optimise the following variable, it will crash */ unsigned int index; /* *MUST* be unsigned */ /* Check if we have some wireless handlers defined */ if (dev-wireless_handlers NULL) return NULL; /* Try as a standard command */ index cmd - SIOCIWFIRST; if (index dev-wireless_handlers-num_standard) return dev-wireless_handlers-standard[index]; /* Try as a private command */ index cmd - SIOCIWFIRSTPRIV;// if (index dev-wireless_handlers-num_private) return dev-wireless_handlers-private[index];//该private命令的handler. /* Not found */ return NULL;} 下面wlan_private_args为本wifi网卡驱动的所能支持的所有命令,也就是iwpriv命令所能支持的所有命令 struct iw_handler_def wlan_handler_def { num_standard:sizeof(wlan_handler) / sizeof(iw_handler), num_private:sizeof(wlan_private_handler) / sizeof(iw_handler), num_private_args:sizeof(wlan_private_args) / sizeof(struct iw_priv_args), standard:(iw_handler *) wlan_handler, private:(iw_handler *) wlan_private_handler, private_args:(struct iw_priv_args *) wlan_private_args,#if WIRELESS_EXT 20 get_wireless_stats:wlan_get_wireless_stats,#endif}; 以下为示意代码,我们的wifi网卡驱动支持如下iwpriv命令. static const struct iw_priv_args wlan_private_args[] { extscan hostcmd arpfilter regrdwr sdcmd52rw sdcmd53rw setgetconf getcis scantype deauth getNF getRSSI bgscan enable11d adhocgrate sdioclock wmm uapsdnullgen setcoalescing adhocgprot setpowercons wmm_qosinfo lolisteninter fwwakeupmethod psnullinterval bcnmisto adhocawakepd moduletype autodeepsleep enhanceps wakeupmt setrxant settxant authalgs encryptionmode setregioncode setlisteninter setmultipledtim setbcnavg setdataavg associate getregioncode getlisteninter getmultipledtim gettxrate getbcnavg getdataavg getrxant gettxant gettsf wpssession deepsleep adhocstop radioon radiooff rmaeskey crypto_test reasso-on reasso-off wlanidle-on wlanidle-off sleepparams requesttpc powercap measreq bca-ts scanmode getadhocstatus setgenie getgenie qstatus ts_status setaeskey getaeskey version verext setwpaie setband setadhocch chanswann getband getadhocch getlog tpccfg scanprobes ledgpio sleeppd rateadapt getSNR getrate getrxinfo atimwindow bcninterval sdiopullctrl scantime sysclock txcontrol hscfg hssetpara inactoext dbgscfg drvdbg drvdelaymax intfctrl setquietie setuserscan getscantable setmrvltlv getassocrsp addts delts qconfig qstats txpktstats getcfptable mefcfg getmem};
