diff mbox

[net-next,1/2] net/mlx4_core: Deprecate use_prio module parameter

Message ID 1400488662-5657-2-git-send-email-amirv@mellanox.com
State Rejected, archived
Delegated to: David Miller
Headers show

Commit Message

Amir Vadai May 19, 2014, 8:37 a.m. UTC
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@linux.vnet.ibm.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx4/main.c | 8 ++++----
 include/linux/mlx4/device.h               | 1 -
 2 files changed, 4 insertions(+), 5 deletions(-)

Comments

David Miller May 21, 2014, 7:49 p.m. UTC | #1
From: Amir Vadai <amirv@mellanox.com>
Date: Mon, 19 May 2014 11:37:41 +0300

> 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@linux.vnet.ibm.com>
> Signed-off-by: Amir Vadai <amirv@mellanox.com>

So you completely took away a feature that was publicly exposed and
available to the user?

Sorry this is still not acceptable, you have to bring back A0
steering, what if someone was using it?

I sense you really don't care, and that I find really disturbing.
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Amir Vadai May 22, 2014, 12:59 p.m. UTC | #2
On 5/21/2014 10:49 PM, David Miller wrote:
> From: Amir Vadai <amirv@mellanox.com>
> Date: Mon, 19 May 2014 11:37:41 +0300
>
>> 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@linux.vnet.ibm.com>
>> Signed-off-by: Amir Vadai <amirv@mellanox.com>
>
> So you completely took away a feature that was publicly exposed and
> available to the user?
>
> Sorry this is still not acceptable, you have to bring back A0
> steering, what if someone was using it?
>
> I sense you really don't care, and that I find really disturbing.
>

My description wasn't accurate. I resubmitted the patch set with a 
better explanation about the purpose of this module param, and why we 
don't expect that anything will break for anyone because we deprecated it.

Amir
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Ben Hutchings May 26, 2014, 7:22 p.m. UTC | #3
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@linux.vnet.ibm.com>
> Signed-off-by: Amir Vadai <amirv@mellanox.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];
Amir Vadai May 27, 2014, 8:08 a.m. UTC | #4
On 5/26/2014 10:22 PM, Ben Hutchings wrote:
> 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@linux.vnet.ibm.com>
>> Signed-off-by: Amir Vadai <amirv@mellanox.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)?
>
Good idea - since the series already applied, will send another patch.

[...]

>> +	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.
Patch 2/2 "net/mlx4_core: Replace pr_warning() with pr_warn()" in this 
patch series will take care to the other pr_warning's

Thanks,
Amir

>
> Ben.
>

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diff mbox

Patch

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);
-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");
+
 	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];