Re: [PATCH 1/2] net/i40e: queue region set and flush

["Chilikin, Andrey" <andrey.chilikin@intel.com>]

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Wei Zhao
> Sent: Wednesday, August 23, 2017 8:26 PM
> To: dev@dpdk.org
> Cc: Zhao1, Wei <wei.zhao1@intel.com>
> Subject: [dpdk-dev] [PATCH 1/2] net/i40e: queue region set and flush
> 
> This feature enable queue regions configuration for RSS in PF/VF,
> so that different traffic classes or different packet
> classification types can be separated to different queues in
> different queue regions.This patch can set queue region range,
> it include queue number in a region and the index of first queue.
> This patch enable mapping between different priorities (UP) and
> different traffic classes.It also enable mapping between a region
> index and a sepcific flowtype(PCTYPE).It also provide the solution
> of flush all configuration about queue region the above described.
> 
> Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
> ---
>  drivers/net/i40e/i40e_ethdev.h            |   6 +
>  drivers/net/i40e/rte_pmd_i40e.c           | 287
> ++++++++++++++++++++++++++++++
>  drivers/net/i40e/rte_pmd_i40e.h           |  39 ++++
>  drivers/net/i40e/rte_pmd_i40e_version.map |   7 +
>  4 files changed, 339 insertions(+)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev.h
> b/drivers/net/i40e/i40e_ethdev.h
> index 48abc05..1d6e9b2 100644
> --- a/drivers/net/i40e/i40e_ethdev.h
> +++ b/drivers/net/i40e/i40e_ethdev.h
> @@ -260,6 +260,12 @@ enum i40e_flxpld_layer_idx {
>  #define I40E_QOS_BW_WEIGHT_MIN 1
>  /* The max bandwidth weight is 127. */
>  #define I40E_QOS_BW_WEIGHT_MAX 127
> +/* The max queue region index is 7. */
> +#define I40E_TCREGION_MAX_INDEX 7
> +/* The max queue region userpriority is 7. */
> +#define I40E_REGION_USERPRIORITY_MAX_INDEX 7
> +/* The max pctype index is 63. */
> +#define I40E_REGION_PCTYPE_MAX_INDEX 63
> 
>  /**
>   * The overhead from MTU to max frame size.
> diff --git a/drivers/net/i40e/rte_pmd_i40e.c
> b/drivers/net/i40e/rte_pmd_i40e.c
> index 950a0d6..5d1e1d4 100644
> --- a/drivers/net/i40e/rte_pmd_i40e.c
> +++ b/drivers/net/i40e/rte_pmd_i40e.c
> @@ -2117,3 +2117,290 @@ int
> rte_pmd_i40e_ptype_mapping_replace(uint8_t port,
> 
>  	return 0;
>  }
> +
> +static int
> +i40e_set_queue_region(struct i40e_hw *hw, struct i40e_pf *pf,
> +				struct rte_i40e_rss_region_conf *conf_ptr)
> +{
> +	uint32_t TCREGION, TC_OFFSET, TC_SIZE;
Please follow DPDK coding style guide and use only low case for variables names. 

> +	uint16_t TC_SIZE_TB[7] = {1, 2, 4, 8, 16, 32, 64};
> +	uint16_t i, index;
> +	uint16_t main_vsi_seid = pf->main_vsi_seid;

<snip>

> 
>  /**
> @@ -146,6 +159,19 @@ struct rte_pmd_i40e_ptype_mapping {
>  };
> 
>  /**
> + * Queue region information get from CLI.
> + */
> +struct rte_i40e_rss_region_conf {
> +	uint8_t region_id;
> +	uint8_t flowtype;
As this is internal i40e flow type (PCTYPE), it is better name it hw_flowtype. As an option - use RTE level sw_flowtype and map it to internal hw_flowtype using corresponding i40e API.

> +	uint8_t queue_startIndex;
> +	uint8_t queue_num;
> +	uint8_t UserPriority;
Low case for naming.

> +	uint8_t TrafficClasses;
> +	enum rte_pmd_i40e_queue_region_op  op;
> +};
> +
> +/**
>   * Notify VF when PF link status changes.
>   *
>   * @param port
> @@ -637,4 +663,17 @@ int rte_pmd_i40e_ptype_mapping_replace(uint8_t
> port,
>  				       uint8_t mask,
>  				       uint32_t pkt_type);
> 
> +/**
> + * Get RSS queue region info from CLI and do configuration for
> + * that port as the command otion type
> + *
> + * @param port
> + *    pointer to port identifier of the device
> + * @param conf_ptr
> + *    pointer to the struct that contain all the
> + *    region configuration parameters
> + */
> +int rte_pmd_i40e_queue_region_conf(uint8_t port,
> +		struct rte_i40e_rss_region_conf *conf_ptr);
> +
>  #endif /* _PMD_I40E_H_ */
> diff --git a/drivers/net/i40e/rte_pmd_i40e_version.map
> b/drivers/net/i40e/rte_pmd_i40e_version.map
> index 20cc980..77ac385 100644
> --- a/drivers/net/i40e/rte_pmd_i40e_version.map
> +++ b/drivers/net/i40e/rte_pmd_i40e_version.map
> @@ -45,3 +45,10 @@ DPDK_17.08 {
>  	rte_pmd_i40e_get_ddp_info;
> 
>  } DPDK_17.05;
> +
> +DPDK_17.11 {
> +	global:
> +
> +	rte_pmd_i40e_queue_region_conf;
> +
> +} DPDK_17.08;
> --
> 2.9.3