netdev - Re: [PATCH mlx5-next 02/25] net/mlx5: Set uid as part of QP commands

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Message-ID: <20180919172731.GM11367@ziepe.ca>
Date:   Wed, 19 Sep 2018 11:27:31 -0600
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Doug Ledford <dledford@...hat.com>,
        Leon Romanovsky <leonro@...lanox.com>,
        RDMA mailing list <linux-rdma@...r.kernel.org>,
        Yishai Hadas <yishaih@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        linux-netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH mlx5-next 02/25] net/mlx5: Set uid as part of QP commands

On Mon, Sep 17, 2018 at 02:03:55PM +0300, Leon Romanovsky wrote:
> From: Yishai Hadas <yishaih@...lanox.com>
> 
> Set uid as part of QP commands so that the firmware can manage the
> QP object in a secured way.
> 
> That will enable using a QP that was created by verbs application to
> be used by the DEVX flow in case the uid is equal.
> 
> Signed-off-by: Yishai Hadas <yishaih@...lanox.com>
> Signed-off-by: Leon Romanovsky <leonro@...lanox.com>
>  drivers/net/ethernet/mellanox/mlx5/core/qp.c | 45 +++++++++++++++++-----------
>  include/linux/mlx5/mlx5_ifc.h                | 22 +++++++-------
>  include/linux/mlx5/qp.h                      |  1 +
>  3 files changed, 39 insertions(+), 29 deletions(-)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/qp.c b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
> index 4ca07bfb6b14..04f72a1cdbcc 100644
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
> @@ -240,6 +240,7 @@ int mlx5_core_create_qp(struct mlx5_core_dev *dev,
>  	if (err)
>  		return err;
>  
> +	qp->uid = MLX5_GET(create_qp_in, in, uid);
>  	qp->qpn = MLX5_GET(create_qp_out, out, qpn);
>  	mlx5_core_dbg(dev, "qpn = 0x%x\n", qp->qpn);
>  
> @@ -261,6 +262,7 @@ int mlx5_core_create_qp(struct mlx5_core_dev *dev,
>  	memset(dout, 0, sizeof(dout));
>  	MLX5_SET(destroy_qp_in, din, opcode, MLX5_CMD_OP_DESTROY_QP);
>  	MLX5_SET(destroy_qp_in, din, qpn, qp->qpn);
> +	MLX5_SET(destroy_qp_in, din, uid, qp->uid);
>  	mlx5_cmd_exec(dev, din, sizeof(din), dout, sizeof(dout));
>  	return err;
>  }
> @@ -320,6 +322,7 @@ int mlx5_core_destroy_qp(struct mlx5_core_dev *dev,
>  
>  	MLX5_SET(destroy_qp_in, in, opcode, MLX5_CMD_OP_DESTROY_QP);
>  	MLX5_SET(destroy_qp_in, in, qpn, qp->qpn);
> +	MLX5_SET(destroy_qp_in, in, uid, qp->uid);
>  	err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
>  	if (err)
>  		return err;
> @@ -373,7 +376,7 @@ static void mbox_free(struct mbox_info *mbox)
>  
>  static int modify_qp_mbox_alloc(struct mlx5_core_dev *dev, u16 opcode, int qpn,
>  				u32 opt_param_mask, void *qpc,
> -				struct mbox_info *mbox)
> +				struct mbox_info *mbox, u16 uid)
>  {
>  	mbox->out = NULL;
>  	mbox->in = NULL;
> @@ -381,26 +384,32 @@ static int modify_qp_mbox_alloc(struct mlx5_core_dev *dev, u16 opcode, int qpn,
>  #define MBOX_ALLOC(mbox, typ)  \
>  	mbox_alloc(mbox, MLX5_ST_SZ_BYTES(typ##_in), MLX5_ST_SZ_BYTES(typ##_out))
>  
> -#define MOD_QP_IN_SET(typ, in, _opcode, _qpn) \
> -	MLX5_SET(typ##_in, in, opcode, _opcode); \
> -	MLX5_SET(typ##_in, in, qpn, _qpn)
> -
> -#define MOD_QP_IN_SET_QPC(typ, in, _opcode, _qpn, _opt_p, _qpc) \
> -	MOD_QP_IN_SET(typ, in, _opcode, _qpn); \
> -	MLX5_SET(typ##_in, in, opt_param_mask, _opt_p); \
> -	memcpy(MLX5_ADDR_OF(typ##_in, in, qpc), _qpc, MLX5_ST_SZ_BYTES(qpc))
> +#define MOD_QP_IN_SET(typ, in, _opcode, _qpn, _uid) \
> +	do { \
> +		MLX5_SET(typ##_in, in, opcode, _opcode); \
> +		MLX5_SET(typ##_in, in, qpn, _qpn); \
> +		MLX5_SET(typ##_in, in, uid, _uid); \
> +	} while (0)
> +
> +#define MOD_QP_IN_SET_QPC(typ, in, _opcode, _qpn, _opt_p, _qpc, _uid) \
> +	do { \
> +		MOD_QP_IN_SET(typ, in, _opcode, _qpn, _uid); \
> +		MLX5_SET(typ##_in, in, opt_param_mask, _opt_p); \
> +		memcpy(MLX5_ADDR_OF(typ##_in, in, qpc), \
> +		       _qpc, MLX5_ST_SZ_BYTES(qpc)); \
> +	} while (0)

These should get touched by clang-format to follow the usual
formatting for macros..

Jason