Issue with i40iw

Issue with i40iw

[Anubhav Guleria]

Hi,
Both of my servers are running with kernel 4.14.178 and have Intel
Ethernet Network Adapter X722. Also the IOMMU is disabled. I was
trying to run qperf and ran into couple of issues:

1) While running any bw test, eg. rc_bw or rc_bi_bw, I see following
messages in dmesg:
i40iw_cqp_ce_handler: opcode = 0x1 maj_err_code = 0xffff min_err_code = 0x8007
i40iw_wait_event: error cqp command 0xb completion maj = 0xffff min=0x8007

2) Following rc benchmarks fail: rc_rdma_write_bw, rc_rdma_write_lat,
rc_compare_swap_mr, rc_fetch_add_mr, ver_rc_compare_swap and
ver_rc_fetch_add. For these I get error of failed to post "benchmark
name"

Am I missing something here? Any suggestions?

Thanks,
Anubhav

RE: Issue with i40iw

[Saleem, Shiraz]

> Subject: Issue with i40iw
> 
> Hi,
> Both of my servers are running with kernel 4.14.178 and have Intel Ethernet
> Network Adapter X722. Also the IOMMU is disabled. I was trying to run qperf and
> ran into couple of issues:
> 
> 1) While running any bw test, eg. rc_bw or rc_bi_bw, I see following messages in
> dmesg:
> i40iw_cqp_ce_handler: opcode = 0x1 maj_err_code = 0xffff min_err_code =
> 0x8007
> i40iw_wait_event: error cqp command 0xb completion maj = 0xffff min=0x8007
> 
> 2) Following rc benchmarks fail: rc_rdma_write_bw, rc_rdma_write_lat,
> rc_compare_swap_mr, rc_fetch_add_mr, ver_rc_compare_swap and
> ver_rc_fetch_add. For these I get error of failed to post "benchmark name"
> 
> Am I missing something here? Any suggestions?
Are these "rc_compare_swap_mr, rc_fetch_add_mr, ver_rc_compare_swap and
ver_rc_fetch_add" reporting an invalid op code? Those are unsupported in i40iw.

qperf I think uses write with immediate which is also unsupported in i40iw
and could explain the rdma_write_* fails.

For performance benchmarking on x722, we are typically using perftests (ib_* tests)

Shiraz