RE: [PATCH rdma-next v2 1/3] RDMA/mana_ib: Access remote atomic for MRs

Long Li
2025-04-16T18:02:31Z

> Subject: [PATCH rdma-next v2 1/3] RDMA/mana_ib: Access remote atomic for
> MRs
>
> From: Konstantin Taranov <kotaranov@microsoft.com>
>
> Add IB_ACCESS_REMOTE_ATOMIC to the valid flags for MRs and use the
> corresponding flag bit during MR creation in the HW.
>
> Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Reviewed-by: Long Li <longli@microsoft.com>

> ---
> drivers/infiniband/hw/mana/mr.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/infiniband/hw/mana/mr.c b/drivers/infiniband/hw/mana/mr.c
> index f99557e..e4a9f53 100644
> --- a/drivers/infiniband/hw/mana/mr.c
> +++ b/drivers/infiniband/hw/mana/mr.c
> @@ -5,8 +5,8 @@
>
> #include "mana_ib.h"
>
> -#define VALID_MR_FLAGS \
> - (IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE |
> IB_ACCESS_REMOTE_READ)
> +#define VALID_MR_FLAGS (IB_ACCESS_LOCAL_WRITE |
> IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ |\
> + IB_ACCESS_REMOTE_ATOMIC)
>
> #define VALID_DMA_MR_FLAGS (IB_ACCESS_LOCAL_WRITE)
>
> @@ -24,6 +24,9 @@ mana_ib_verbs_to_gdma_access_flags(int access_flags)
> if (access_flags & IB_ACCESS_REMOTE_READ)
> flags |= GDMA_ACCESS_FLAG_REMOTE_READ;
>
> + if (access_flags & IB_ACCESS_REMOTE_ATOMIC)
> + flags |= GDMA_ACCESS_FLAG_REMOTE_ATOMIC;
> +
> return flags;
> }
>
> --
> 2.43.0