Merge status of IB/IPoIB: Add multi-queue TSS and RSS support

Hello,

can someone tell me why MQ TSS/RSS is present in MLNX OFED, but not in mainlined yet? I've found some nearly four years old patch sets regarding that topic, but no real reason for not merging them:
https://www.spinics.net/lists/linux-rdma/msg14940.html

I'd like to push this forward in order to align features of mainline with MLNX OFED.

Quoted 9 lines

Hello,

can someone tell me why MQ TSS/RSS is present in MLNX OFED, but not in mainlined yet? I've found some nearly four years old patch sets regarding that topic, but no real reason for not merging them:
https://www.spinics.net/lists/linux-rdma/msg14940.html

I'd like to push this forward in order to align features of mainline with MLNX OFED.

Kernel features like this have been superseded by rdma_netdev for ipoib - eg mlx5 implements all offloads through this API.

RSS was merged to userspace with a different API, see
ibv_create_rwq_ind_table.3
ibv_create_wq.3
ibv_modify_wq.3

And TSS was merged to userspace with a different API, see IBV_QP_CREATE_SOURCE_QPN.

Jason
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html

Hello Jason,

2018-01-29 19:10 GMT+01:00 Jason Gunthorpe <jgg-uk2M96/[email protected]>:

Quoted 14 lines · Benjamin Drung

Quoted 9 lines

Hello,

can someone tell me why MQ TSS/RSS is present in MLNX OFED, but not in mainlined yet? I've found some nearly four years old patch sets regarding that topic, but no real reason for not merging them:
https://www.spinics.net/lists/linux-rdma/msg14940.html

I'd like to push this forward in order to align features of mainline with MLNX OFED.

Kernel features like this have been superseded by rdma_netdev for ipoib - eg mlx5 implements all offloads through this API.

Quoted 7 lines

RSS was merged to userspace with a different API, see
ibv_create_rwq_ind_table.3
ibv_create_wq.3
ibv_modify_wq.3

And TSS was merged to userspace with a different API, see IBV_QP_CREATE_SOURCE_QPN.

Thanks for reply.

To be more specific, our kernel module depends on the TSS/TSS QP groups, which is in the patch below:
https://www.spinics.net/lists/linux-rdma/msg14935.html

It's no really about IPOIB and user space.

Does upstream support or plan to have that feature?
Do you have any suggestion if we want to switch to upstream OFED?