> On Feb 17, 2018, at 3:03 PM, Yi Bairen <byron@xxxxxxxxxx> wrote:
>
> Hi,
>
>> On 15 Feb 2018, at 03:25, Yuval Shaia <yuval.shaia@xxxxxxxxxx> wrote:
>>
>> On Wed, Feb 14, 2018 at 05:13:07PM +0000, Yi Bairen wrote:
>>> Hi folks,
>>>
>>> Seems I can’t get a Linux 4.9 (Debian 9.3) VM working with single box SoftRoCE loopback. I installed rdma-core 16. The rdma_client & rdma_server in the same box seems working. However, when I use ib_write_bw in the same box, the QPs can’t be connected through the same rxe device.
>>
>> If the QPs connection is problematic then how come rdma_* is working?
>
> The rdma_client and rdma_server do work with `end 0`.
>
> The ib_write_bw seems to hang. If I kill the server side, the client does not respond. If I kill the client side, it shows the following log:
>
> $ ib_write_bw
Did you try to specify a gid index with -x param? For example ib_write_bw -x 0.
Without gid I would expect init2rtr to fail.. which doesn’t seem the case though ..
>
> ************************************
> * Waiting for client to connect... *
> ************************************
> ---------------------------------------------------------------------------------------
> RDMA_Write BW Test
> Dual-port : OFF Device : rxe0
> Number of qps : 1 Transport type : IB
> Connection type : RC Using SRQ : OFF
> CQ Moderation : 100
> Mtu : 1024[B]
> Link type : Ethernet
> GID index : 1
> Max inline data : 0[B]
> rdma_cm QPs : OFF
> Data ex. method : Ethernet
> ---------------------------------------------------------------------------------------
> local address: LID 0000 QPN 0x0014 PSN 0x3787ca RKey 0x00052c VAddr 0x007f3dd4c42000
> GID: 00:00:00:00:00:00:00:00:00:00:255:255:159:65:13:34
> remote address: LID 0000 QPN 0x0015 PSN 0x5c8ba9 RKey 0x000658 VAddr 0x007f30e74b3000
> GID: 00:00:00:00:00:00:00:00:00:00:255:255:159:65:13:34
> ---------------------------------------------------------------------------------------
> #bytes #iterations BW peak[MB/sec] BW average[MB/sec] MsgRate[Mpps]
> ethernet_read_keys: Couldn't read remote address
> Unable to read to socket/rdam_cm
> Failed to exchange data between server and clients
>
> #bytes #iterations BW peak[MB/sec] BW average[MB/sec] MsgRate[Mpps]
> ethernet_read_keys: Couldn't read remote address
> Unable to read to socket/rdam_cm
> Failed to exchange data between server and clients
>
> My RXE config:
>
> $ sudo rxe_cfg start
> Name Link Driver Speed NMTU IPv4_addr RDEV RMTU
> docker0 no bridge
> eth0 yes virtio_net rxe0 1024 (3)
> eth1 yes virtio_net rxe1 1024 (3)
>
> dmesg:
>
> [14441.336707] rdma_rxe: loaded
> [14441.375108] Loading iSCSI transport class v2.0-870.
> [14441.380930] rdma_rxe: set rxe0 active
> [14441.381824] rdma_rxe: added rxe0 to eth0
> [14441.389567] iscsi: registered transport (iser)
> [14441.403595] RPC: Registered named UNIX socket transport module.
> [14441.404618] RPC: Registered udp transport module.
> [14441.405390] RPC: Registered tcp transport module.
> [14441.406057] RPC: Registered tcp NFSv4.1 backchannel transport module.
> [14441.415816] RPC: Registered rdma transport module.
> [14441.416689] RPC: Registered rdma backchannel transport module.
> [14441.419979] rdma_rxe: set rxe1 active
> [14441.420657] rdma_rxe: added rxe1 to eth1
> [14470.422836] detected loopback device
> [14484.278022] rdma_rxe: qp#18 moved to error state
>
>>
>>>
>>> I’d like to know if rxe loopback is known to be broken, and how to fix it.
>>>
>>> Best,
>>> Bairen Yi
>
> Bairen Yi
>
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