cat /sys/class/net/eth0/carrier_changes
20251215给飞凌OK3588-C开发板适配Rockchip原厂的Buildroot【linux-6.1】系统时统计eth1的插拔次数
2025/12/15 15:13
缘起：公司使用荣品RPO-RK3566+RTL8211F-CG的机器经常出现断联【linux/Buildroot】，需要统计RK3566断联了多少次/是否断联过！
直接现在飞凌OK3588-C开发板上测试了。
飞凌丝印ETH1的地方，在Rockchip原厂的Buildroot【linux-6.1】系统下被识别为eth0了。
飞凌OK3588-C开发板跑Rockchip原厂的Buildroot【linux-6.1】系统时，适配ETH1接口的网卡。
当你把荣品RD-RK3588开发板重新适配一把，就相当于从头做了一个项目：【荣品RD-RK3588开发板】。
当然，开发板的功能都是好的，你免除了调试的过程，也就没有解决相关硬件出错的经验/机会了！
https://chat.deepseek.com/a/chat/s/8edaedd7-51d5-44e2-ba93-674a7f137e4e
RK3566开发板RTL8211F-CG断联统计方法
PRO-RK3566开发板 + RTL8211F-CG，跑buildroot/Linux系统。
我们现在 要 统计 RTL8211F-CG断联了多少次？
请问 /sys/目录 有哪里可以统计？
建议：
首先尝试：
bash
cat /sys/class/net/eth0/carrier_changes 2>/dev/null
这是最直接的方法，如果驱动支持的话。
root@rk3588-buildroot:/#
root@rk3588-buildroot:/#
root@rk3588-buildroot:/#
【开机】
root@rk3588-buildroot:/# cat /sys/class/net/eth0/carrier_changes
1
root@rk3588-buildroot:/#
root@rk3588-buildroot:/# [ 49.044573] rk_gmac-dwmac fe1c0000.ethernet eth0: Link is Down
root@rk3588-buildroot:/#
【拔网线】
root@rk3588-buildroot:/# cat /sys/class/net/eth0/carrier_changes
2
root@rk3588-buildroot:/#
root@rk3588-buildroot:/# [ 59.287522] rk_gmac-dwmac fe1c0000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
root@rk3588-buildroot:/#
【插网线】
root@rk3588-buildroot:/# cat /sys/class/net/eth0/carrier_changes
3
root@rk3588-buildroot:/#
root@rk3588-buildroot:/# ifconfig
eth0 Link encap:Ethernet HWaddr 2E:83:31:EF:D2:AC
inet addr:192.168.3.114 Bcast:192.168.3.255 Mask:255.255.255.0
inet6 addr: fe80::4f4:9901:ffb5:d430/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:24494 errors:0 dropped:0 overruns:0 frame:0
TX packets:1055 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3186533 (3.0 MiB) TX bytes:107769 (105.2 KiB)
Interrupt:66
eth1 Link encap:Ethernet HWaddr 2A:83:31:EF:D2:AC
UP 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)
Interrupt:68
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:576 (576.0 B) TX bytes:576 (576.0 B)
root@rk3588-buildroot:/#
root@rk3588-buildroot:/# cat /etc/issue
Welcome to RK3588 Buildroot
root@rk3588-buildroot:/#
root@rk3588-buildroot:/# uname -a
Linux rk3588-buildroot 6.1.75 #1 SMP Sat Dec 13 21:42:26 CST 2025 aarch64 GNU/Linux
root@rk3588-buildroot:/#
root@rk3588-buildroot:/#
