[dpdk-users] does mlx5 support lpbk_mode?

[dpdk-users] does mlx5 support lpbk_mode?

[Jan Viktorin]

Hello,

can somebody please tell me whether lpbk_mode works for mellanox NICs?
I found 65c9d24170c9 ("net/mlx5: enable loopback by configured mode")
that seems to implement this feature for mlx5. But setting lpbk_mode in
rte_eth_conf does not seem to work for me (ixgbe works with this).

Are there any other ways how to configure such HW loopback-mode
mellanox NICs (both mlx5, mlx4)?

Thanks
Jan

Re: [dpdk-users] does mlx5 support lpbk_mode?

[Asaf Penso]

Hello Jan,

The feature is expected to work.
Let's work offline to get more details and once we conclude we can post here the outcome.

Regards,
Asaf Penso

>-----Original Message-----
>From: users <users-bounces@dpdk.org> On Behalf Of Jan Viktorin
>Sent: Tuesday, February 23, 2021 5:59 PM
>To: Matan Azrad <matan@nvidia.com>; Shahaf Shuler
><shahafs@nvidia.com>; Slava Ovsiienko <viacheslavo@nvidia.com>
>Cc: users@dpdk.org
>Subject: [dpdk-users] does mlx5 support lpbk_mode?
>
>Hello,
>
>can somebody please tell me whether lpbk_mode works for mellanox NICs?
>I found 65c9d24170c9 ("net/mlx5: enable loopback by configured mode") that
>seems to implement this feature for mlx5. But setting lpbk_mode in
>rte_eth_conf does not seem to work for me (ixgbe works with this).
>
>Are there any other ways how to configure such HW loopback-mode mellanox
>NICs (both mlx5, mlx4)?
>
>Thanks
>Jan

Re: [dpdk-users] does mlx5 support lpbk_mode?

[Asaf Penso]

We checked again and saw the feature is not fully working.
A BZ ticket was opened for that - https://bugs.dpdk.org/show_bug.cgi?id=645

Regards,
Asaf Penso

>-----Original Message-----
>From: users <users-bounces@dpdk.org> On Behalf Of Asaf Penso
>Sent: Wednesday, February 24, 2021 10:12 AM
>To: Jan Viktorin <viktorin@cesnet.cz>; Matan Azrad <matan@nvidia.com>;
>Shahaf Shuler <shahafs@nvidia.com>; Slava Ovsiienko
><viacheslavo@nvidia.com>
>Cc: users@dpdk.org
>Subject: Re: [dpdk-users] does mlx5 support lpbk_mode?
>
>Hello Jan,
>
>The feature is expected to work.
>Let's work offline to get more details and once we conclude we can post here
>the outcome.
>
>Regards,
>Asaf Penso
>
>>-----Original Message-----
>>From: users <users-bounces@dpdk.org> On Behalf Of Jan Viktorin
>>Sent: Tuesday, February 23, 2021 5:59 PM
>>To: Matan Azrad <matan@nvidia.com>; Shahaf Shuler
><shahafs@nvidia.com>;
>>Slava Ovsiienko <viacheslavo@nvidia.com>
>>Cc: users@dpdk.org
>>Subject: [dpdk-users] does mlx5 support lpbk_mode?
>>
>>Hello,
>>
>>can somebody please tell me whether lpbk_mode works for mellanox NICs?
>>I found 65c9d24170c9 ("net/mlx5: enable loopback by configured mode")
>>that seems to implement this feature for mlx5. But setting lpbk_mode in
>>rte_eth_conf does not seem to work for me (ixgbe works with this).
>>
>>Are there any other ways how to configure such HW loopback-mode
>>mellanox NICs (both mlx5, mlx4)?
>>
>>Thanks
>>Jan