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TDA4VM: tda4上如何设定jumbo_frame

Part Number: TDA4VM


各位老师:

根据tda4的硬件组成,我发现其ethernet是一个千兆网口,我就试着开启它的jumbo_frame,

具体来说,就是通过ifconfig命令设置mtu,设定成9000,结果系统告诉我参数不合法:

ifconfig eth0 mtu 9000 up

eth0: mtu greater than device maximum
SIOCSIFMTU: Invalid argument

感觉有什么配置没打开,所以直接设定mtu的话,会报错

在这里想请教各位老师,能不能告诉我怎么启用tda4的jumbo_frame?