On 2021/1/27 20:04, Leon Romanovsky wrote:
On Wed, Jan 27, 2021 at 04:24:31PM +0800, Xiao Yang wrote:
Even if we enable sq_sig_all or IBV_SEND_SIGNALED, current rxe
module cannot set imm_data in WC when the related WR with imm_data
finished on SQ.
Signed-off-by: Xiao Yang<yangx.jy@xxxxxxxxxxxxxx>
---
Current rxe module and other rdma modules(e.g. mlx5) only set
imm_data in WC when the related WR with imm_data finished on RQ.
I am not sure if it is a expected behavior.
This is IBTA behavior.
5.2.11 IMMEDIATE DATA EXTENDED TRANSPORT HEADER (ImmDt) - 4 BYTES
"Immediate Data (ImmDt) contains data that is placed in the receive
Completion Queue Element (CQE). The ImmDt is only allowed in SEND or
RDMA WRITE packets with Immediate Data."
If I understand the spec, you shouldn't set imm_data in SQ.
Hi Leon,
About the behavior, I have another question:
For send operation with imm_data, we can verify if the delivered
imm_data is correct by CQE on RQ.
For rdma write operation with imm_data, how to verify if the delivered
imm_data is correct? :-)
Best Regards,
Xiao Yang
Thanks
.
