imx6ul之OpenWRT添加無線USB網卡
時間 2021-01-19
標籤
imx6ul
openwrt
無線
USB
網卡
說明
要完成網線網卡的驅動需要在內核中添加驅動,同時還需要將固件放入rootfs中正確的位置,如果需要固件的話。
內核驅動添加
因爲內核中對常規的USB網卡均支持,所以直接添加即可, 例如下面是對9170的支持:
Firmware添加
在menuconfig中直接添加:
啓動確認
啓動後,我們需要等待rootfs完成後再插入, 這樣子可以比較容易看到log, 對於TPLink的其中一款,對應的log如下:
- [ 1015.718981] usb 1-1.2.4: new high-speed USB device number 9 using ci_hdrc
- [ 1015.978998] usb 1-1.2.4: reset high-speed USB device number 9 using ci_hdrc
- [ 1016.136841] usb 1-1.2.4: driver API: 1.9.7 2012-12-15 [1-1]
- [ 1016.145314] usb 1-1.2.4: firmware API: 1.9.6 2012-07-07
- [ 1016.497852] ath: EEPROM regdomain: 0x809c
- [ 1016.497905] ath: EEPROM indicates we should expect a country code
- [ 1016.497942] ath: doing EEPROM country->regdmn map search
- [ 1016.497976] ath: country maps to regdmn code: 0x52
- [ 1016.498010] ath: Country alpha2 being used: CN
- [ 1016.498040] ath: Regpair used: 0x52
- [ 1016.500103] ieee80211 phy3: Selected rate control algorithm 'minstrel_ht'
- [ 1016.510419] input: phy3 WPS Button as /devices/soc0/soc.0/2100000.aips-bus/2184200.usb/ci_hdrc.1/usb1/1-1/1-1.2/1-1.2.4/1-1.2.4:1.0/ieee80211/phy3/input4
- [ 1016.526387] evbug: Connected device: input4 (phy3 WPS Button at ieee80211/phy3/input0)
- [ 1016.526430] usb 1-1.2.4: Atheros AR9170 is registered as 'phy3'
從log看,加載了對應的固件。配置country code。這個FW位於:
因爲這個網卡具備WPS功能,有一個按鍵,所以有一個input設備。
對於另外一個USB網卡:
- [ 1022.368886] usb 1-1.2.1: new high-speed USB device number 10 using ci_hdrc
- [ 1022.608872] usb 1-1.2.1: reset high-speed USB device number 10 using ci_hdrc
- [ 1022.740356] ieee80211 phy4: rt2x00_set_rt: Info - RT chipset 3070, rev 0201 detected
- [ 1022.804614] ieee80211 phy4: rt2x00_set_rf: Info - RF chipset 0005 detected
- [ 1022.813948] ieee80211 phy4: Selected rate control algorithm 'minstrel_ht'
然後就可以看到對應的網卡設備了:
- wlan0 Link encap:Ethernet HWaddr 7c:dd:90:b2:73:b1
- BROADCAST MULTICAST MTU:1500 Metric:1
- RX packets:0 errors:0 dropped:0 overruns:0 frame:0
- TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:1000
- RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
-
- wlan1 Link encap:Ethernet HWaddr 94:0c:6d:7c:12:f6
- BROADCAST MULTICAST MTU:1500 Metric:1
- RX packets:0 errors:0 dropped:0 overruns:0 frame:0
- TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:1000
- RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
網卡功能查詢
使用USB網卡來做AP那麼就需要確定時候具備AP功能
使用iw list命令, 然後找到對應的modes:
- Supported interface modes:
- * IBSS
- * managed
- * AP
- * AP/VLAN
- * monitor
- * P2P-client
- * P2P-GO
另外一個網卡具備的modes:
- Supported interface modes:
- * IBSS
- * managed
- * AP
- * AP/VLAN
- * WDS
- * monitor
因此可以確定兩個網卡均具備AP模式, 還有一個具備monitor模式。生成了Network Interface後,接下來我們將完成AP功能。