如题，在通过qmss向外发包的时候，descriptor 中的ps_flag字段一共有四位，其中
3--------RX_PASS_CRC Receive pass CRC.
0 = The packet does not contain a CRC. The CRC should be generated by the MAC module.
1 = The packet already contains a CRC. The CRC should not be generated by the MAC module.
2-0 ----TO_PORT Directed packet to port. Setting these bits to a non-zero value indicates that the packet is a directed packet. Packets with the these bits set will bypass the ALE and send the packet directly to the port indicated.
0 = No effect
1 = Send packet to GbE switch port 1
2 = Send packet to GbE switch port 2
当我把ps_flag字段设置成2，即TO_PORT = 2，通过GbE switch port 2发送报文，对端能正常收到数据包。
可是当我把ps_flag 字段设置成10，即TO_PORT = 2，RX_PASS_CRC = 1（不需要MAC进行CRC校验），此时，数据不能正常收发到对端
不知是何原因，各位可否有思路？谢谢！
