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

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Message-ID:
 <SA6PR21MB4231BC133C6EBAAADB6CFC59CEBD2@SA6PR21MB4231.namprd21.prod.outlook.com>
Date: Wed, 16 Apr 2025 18:02:28 +0000
From: Long Li <longli@...rosoft.com>
To: Konstantin Taranov <kotaranov@...ux.microsoft.com>, Konstantin Taranov
	<kotaranov@...rosoft.com>, "pabeni@...hat.com" <pabeni@...hat.com>, Haiyang
 Zhang <haiyangz@...rosoft.com>, KY Srinivasan <kys@...rosoft.com>,
	"edumazet@...gle.com" <edumazet@...gle.com>, "kuba@...nel.org"
	<kuba@...nel.org>, "davem@...emloft.net" <davem@...emloft.net>, Dexuan Cui
	<decui@...rosoft.com>, "wei.liu@...nel.org" <wei.liu@...nel.org>,
	"jgg@...pe.ca" <jgg@...pe.ca>, "leon@...nel.org" <leon@...nel.org>
CC: "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH rdma-next v2 1/3] RDMA/mana_ib: Access remote atomic for
 MRs

> Subject: [PATCH rdma-next v2 1/3] RDMA/mana_ib: Access remote atomic for
> MRs
> 
> From: Konstantin Taranov <kotaranov@...rosoft.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@...rosoft.com>

Reviewed-by: Long Li <longli@...rosoft.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