netdev - Re: [PATCH net-next 12/12] be2net: query max_tx

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Date:	Mon, 01 Sep 2014 17:10:29 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Sathya Perla <sathya.perla@...lex.com>, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 12/12] be2net: query max_tx_qs for BE3 super-nic
 profile from FW

Hello.

On 9/1/2014 10:24 AM, Sathya Perla wrote:

> From: Suresh Reddy <Suresh.Reddy@...lex.com>

> In the BE3 super-nic profile, the max_tx_qs value can vary for each function.
> So the driver needs to query this value from FW instead of using the
> pre-defined constant BE3_MAX_TX_QS.

> Signed-off-by: Suresh Reddy <Suresh.Reddy@...lex.com>
> Signed-off-by: Sathya Perla <sathya.perla@...lex.com>
> ---
>   drivers/net/ethernet/emulex/benet/be_main.c |   13 +++++++++++--
>   1 files changed, 11 insertions(+), 2 deletions(-)

> diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
> index f3235d1..a30156b 100644
> --- a/drivers/net/ethernet/emulex/benet/be_main.c
> +++ b/drivers/net/ethernet/emulex/benet/be_main.c
> @@ -3324,10 +3324,19 @@ static void BEx_get_resources(struct be_adapter *adapter,
>   	 */
>   	if (BE2_chip(adapter) || use_sriov ||  (adapter->port_num > 1) ||
>   	    !be_physfn(adapter) || (be_is_mc(adapter) &&
> -	    !(adapter->function_caps & BE_FUNCTION_CAPS_RSS)))
> +	    !(adapter->function_caps & BE_FUNCTION_CAPS_RSS))) {
>   		res->max_tx_qs = 1;
> -	else
> +	} else if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) {
> +		struct be_resources super_nic_res = {0};

    Empty line is needed after declaration.

> +		/* On a SuperNIC profile, the driver needs to use the
> +		 * GET_PROFILE_CONFIG cmd to query the per-function TXQ limits
> +		 */
> +		be_cmd_get_profile_config(adapter, &super_nic_res, 0);
> +		/* Some old versions of BE3 FW don't report max_tx_qs value */
> +		res->max_tx_qs = super_nic_res.max_tx_qs ? : BE3_MAX_TX_QS;
> +	} else {
>   		res->max_tx_qs = BE3_MAX_TX_QS;
> +	}

WBR, Sergei

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