netdev - Re: [PATCH net-next 1/2] net/mlx4_core: Deprecate use

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Date:	Mon, 26 May 2014 20:22:32 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Amir Vadai <amirv@...lanox.com>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	Yevgeny Petrilin <yevgenyp@...lanox.com>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Carol Soto <clsoto@...ux.vnet.ibm.com>
Subject: Re: [PATCH net-next 1/2] net/mlx4_core: Deprecate use_prio module
 parameter

On Mon, 2014-05-19 at 11:37 +0300, Amir Vadai wrote:
> It was used for steering by user priority for A0 steering. A0 mode is
> not supported anymore. Printing a message and ignoring the parameter.
> 
> CC: Carol Soto <clsoto@...ux.vnet.ibm.com>
> Signed-off-by: Amir Vadai <amirv@...lanox.com>
> ---
>  drivers/net/ethernet/mellanox/mlx4/main.c | 8 ++++----
>  include/linux/mlx4/device.h               | 1 -
>  2 files changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
> index a56f601..08ff5dd 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/main.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/main.c
> @@ -132,8 +132,7 @@ MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
>  
>  static bool use_prio;
>  module_param_named(use_prio, use_prio, bool, 0444);

Perhaps the sysfs permissions should be set to 0 (i.e. not visible in
sysfs)?

> -MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports "
> -		  "(0/1, default 0)");
> +MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports (deprecated)");
>
>  int log_mtts_per_seg = ilog2(MLX4_MTT_ENTRY_PER_SEG);
>  module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
> @@ -290,7 +289,6 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
>  
>  	dev->caps.log_num_macs  = log_num_mac;
>  	dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS;
> -	dev->caps.log_num_prios = use_prio ? 3 : 0;
>  
>  	for (i = 1; i <= dev->caps.num_ports; ++i) {
>  		dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE;
> @@ -358,7 +356,6 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
>  		dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
>  		(1 << dev->caps.log_num_macs) *
>  		(1 << dev->caps.log_num_vlans) *
> -		(1 << dev->caps.log_num_prios) *
>  		dev->caps.num_ports;
>  	dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
>  
> @@ -2775,6 +2772,9 @@ static int __init mlx4_verify_params(void)
>  		pr_warning("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
>  			   MLX4_LOG_NUM_VLANS);
>  
> +	if (use_prio != 0)
> +		pr_warn("mlx4_core: use_prio - obsolete module param, ignored\n");

You spell it pr_warning() in the adjacent logging statements.

Ben.

>  	if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 7)) {
>  		pr_warning("mlx4_core: bad log_mtts_per_seg: %d\n", log_mtts_per_seg);
>  		return -1;
> diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
> index c0468e6..ca38871 100644
> --- a/include/linux/mlx4/device.h
> +++ b/include/linux/mlx4/device.h
> @@ -449,7 +449,6 @@ struct mlx4_caps {
>  	int                     reserved_qps_base[MLX4_NUM_QP_REGION];
>  	int                     log_num_macs;
>  	int                     log_num_vlans;
> -	int                     log_num_prios;
>  	enum mlx4_port_type	port_type[MLX4_MAX_PORTS + 1];
>  	u8			supported_type[MLX4_MAX_PORTS + 1];
>  	u8                      suggested_type[MLX4_MAX_PORTS + 1];

-- 
Ben Hutchings
Humans are not rational beings; they are rationalising beings.

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