I have a PPC440GX board, and BSP is ocotea。
I set EMAC2 to the RGMII mode, when it is connected to a 100Mb/s port,
the transfer rate is very high, about per cent 66.
But make it connected to a 1000Mb/s port, the rate is very slowly,
almost cannot to transfer data.

Here, I transfer data by call send() or recv().

Have anyone encounter such a problem? How to solve it?

Thank you very much.