[SPDK] SPDK NVMe/TCP target always fail to send C2H_TERM_REQ request

Hi,

I’m testing our NVMe/TCP initiator for handling C2H_TERM_REQ (PDU type 0x3). In order to test it, I intentionally injected an error to a H2CData PDU by modifying its data offset field DATAO to an invalid value. This error, if detected by the target, will be treated as a fatal transport error with fatal error status FES set to 4 (Data Transfer Out of Range).

When I tested this, I can see SPDK NVMe/TCP target can detect this error and set the FES to value 4 as expected, but when sending C2H_TERM_REQ PDU, it always fails with a message “IC_RESP or TERM_REQ could not write to socket.”, then on host side, the initiator gets the error “Connection reset by peer” when receiving data.


[2021-11-08 00:47:06.795739] tcp.c:1437:nvmf_tcp_h2c_data_hdr_handle: *ERROR*: Queue 3, fes 4, offset 0

[2021-11-08 00:47:06.795879] tcp.c: 837:_tcp_write_pdu: *ERROR*: IC_RESP or TERM_REQ could not write to socket.

What could be the problem here?

Thanks,
-Wenhua