Hello,guys.
I face a problem about sending packets with QMSS in 6614-EVM board and receiving packets with 4 aditional bytes at the end of it.
The senario is as follows:
Send raw ethernet packets in one core with SGMII loopback mode and receive packets with PA PDSP0( which will dispatch packets accoreding to destination MAC address ).
When I send packets with 124 bytes, it'll receive 128 bytes, adding 4 additional bytes at the end, which seem like CRC check sum.
I send the packets using descriptors of ps_flag = 2( which means sending to GBE-Switch port 2 ). Then I saw the usage of the ps_flag is as follows:
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
So I tried to modify ps_flag to 10, which means RX_PASS_CRC = 1, but it can't receive pakcets any more.
I want to ask you why?Who may tell me?Thans a lot.
