转至：http://blog.csdn.net/robertsong2004/article/details/
关于 cfg80211
cfg80211是Linux 802.11配置API。 cfg80211用于取代Wireless-Extensions。 nl80211用来配置一个cfg80211设备，用于内核< - >用户空间之间的通信。 Wireless extensions 现在处于维护模式，将不会添加新的功到它上面，我们只修复bug。cfg80211现在与wireless-extensions是完全特性兼容的，它实际上有更多的功能，这些功能wireless extension根本是没有的，而且以后也不会有。当实现一个cfg80211驱动时，仍然会通过CONFIG_CFG80211_WEXT为你自动提供wireless extensions的支持，不再需要无线扩展的发行版可以删除它，我们也鼓励他们这样做。 cfg80211还提供了完整的regulatory支持，这是通过wireless-regdb 和CRDA的使用来实现的。
所有新的Linux无线驱动程序应该面向fullmac设备的cfg80211或softmac设备的mac80211编程。
cfg80211 驱动编程
我们现在有一些cfg80211驱动，一个完整的cfg80211驱动的很好的例子是Atheros ath6kl驱动程序。 取代之前的wext ioctls 编程，你现在通过设置cfg80211回调和wiphy结构体来告知cfg80211其设备信息。
static struct cfg80211_ops ath6kl_cfg80211_ops = { .add_virtual_intf = ath6kl_cfg80211_add_iface, //. 结构体初始化 .del_virtual_intf = ath6kl_cfg80211_del_iface, .change_virtual_intf = ath6kl_cfg80211_change_iface, .scan = ath6kl_cfg80211_scan, .connect = ath6kl_cfg80211_connect, .disconnect = ath6kl_cfg80211_disconnect, .add_key = ath6kl_cfg80211_add_key, .get_key = ath6kl_cfg80211_get_key, .del_key = ath6kl_cfg80211_del_key, .set_default_key = ath6kl_cfg80211_set_default_key, .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params, .set_tx_power = ath6kl_cfg80211_set_txpower, .get_tx_power = ath6kl_cfg80211_get_txpower, .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt, .join_ibss = ath6kl_cfg80211_join_ibss, .leave_ibss = ath6kl_cfg80211_leave_ibss, .get_station = ath6kl_get_station, .set_pmksa = ath6kl_set_pmksa, .del_pmksa = ath6kl_del_pmksa, .flush_pmksa = ath6kl_flush_pmksa, CFG80211_TESTMODE_CMD(ath6kl_tm_cmd) #ifdef CONFIG_PM .suspend = __ath6kl_cfg80211_suspend, .resume = __ath6kl_cfg80211_resume, #endif .start_ap = ath6kl_start_ap, .change_beacon = ath6kl_change_beacon, .stop_ap = ath6kl_stop_ap, .del_station = ath6kl_del_station, .change_station = ath6kl_change_station, .remain_on_channel = ath6kl_remain_on_channel, .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel, .mgmt_tx = ath6kl_mgmt_tx, .mgmt_frame_register = ath6kl_mgmt_frame_register, .sched_scan_start = ath6kl_cfg80211_sscan_start, .sched_scan_stop = ath6kl_cfg80211_sscan_stop, };
然后你通过指定cfg80211 ops分配wiphy并填写wiphy。
Regulatory
Linux wireless regulatory 文档:
- Addressing vendor concerns
- Regulatory statement by developer on responsibility
- Linux wireless regulatory documentation
- Regulatory processing rule documentation
- CRDA documentation
其他文档
- Johannes Berg’s presentation (out of date!)
cfg80211 文件和内核文档
- include/net/cfg80211.h (kerneldoc)
- cfg80211 kerneldoc warnings
发布者：全栈程序员-站长，转载请注明出处：https://javaforall.net/219412.html原文链接：https://javaforall.net
