Wifi/IEEE 802.11
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至少需要激活cfg80211(CONFIG_CFG80211)和 mac80211(CONFIG_MAC80211)。
内核 linux-4.19 示例
[*] Networking support ---> [*] Wireless ---> <M> cfg80211 - wireless configuration API [ ] nl80211 testmode command [ ] enable developer warnings [ ] cfg80211 certification onus [*] enable powersave by default [ ] cfg80211 DebugFS entries [ ] support CRDA [ ] cfg80211 wireless extensions compatibility <M> Generic IEEE 802.11 Networking Stack (mac80211) [*] Minstrel [*] Minstrel 802.11n support [ ] Minstrel 802.11ac support Default rate control algorithm (Minstrel) ---> [ ] Enable mac80211 mesh networking (pre-802.11s) support -*- Enable LED triggers [ ] Export mac80211 internals in DebugFS [ ] Trace all mac80211 debug messages [ ] Select mac80211 debugging features ----
Minstrel 和 802.11n 支持速率控制算法,一些无线设备可能需要开启这个选项。
重要
In case the wireless configuration API (CONFIG_CFG80211) is built into the kernel (
In case the wireless configuration API (CONFIG_CFG80211) is built into the kernel (
<*>
) instead as a module (<M>
), the driver won't be able to load regulatory.db from /lib/firmware resulting in broken regulatory domain support. Please set CONFIG_CFG80211=m or add regulatory.db and regulatory.db.p7s (from net-wireless/wireless-regdb) to CONFIG_EXTRA_FIRMWARE.