[dpdk-dev] [PATCH v2] net/i40e: support mac loopback

[Zhang, Helin]

Doc update is needed. /Helin

> -----Original Message-----
> From: Wu, Yanglong
> Sent: Wednesday, December 20, 2017 3:29 PM
> To: dev at dpdk.org
> Cc: Xing, Beilei; Zhang, Helin; Peng, Yuan; Wu, Yanglong
> Subject: [PATCH v2] net/i40e: support mac loopback
> 
> According to loopback mode, setup loopback link or not.
> If loopback link is setted, packets in tx will be sent to rx directly.
> Loopback mode can be used to support testing task
> 
> Signed-off-by: Yanglong Wu <yanglong.wu at intel.com>
> ---
> v2:
> fix coding style issue
> ---
>  drivers/net/i40e/i40e_ethdev.c | 10 ++++++++++
> drivers/net/i40e/i40e_ethdev.h |  3 ++-
>  2 files changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index 0739f65a8..e8bdb335a 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -2047,6 +2047,16 @@ i40e_dev_start(struct rte_eth_dev *dev)
>  						     true, NULL);
>  		}
>  	}
> +
> +	/* Enable mac loopback mode */
> +	if (dev->data->dev_conf.lpbk_mode == I40E_AQ_LB_MODE_NONE ||
> +	    dev->data->dev_conf.lpbk_mode == I40E_AQ_LB_PHY_LOCAL) {
> +		ret = i40e_aq_set_lb_modes(hw, dev->data-
> >dev_conf.lpbk_mode, NULL);
> +		if (ret != I40E_SUCCESS) {
> +			PMD_DRV_LOG(ERR, "fail to set loopback link");
> +			goto err_up;
> +		}
> +	}
> 
>  	/* Apply link configure */
>  	if (dev->data->dev_conf.link_speeds & ~(ETH_LINK_SPEED_100M |
> diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
> index cd67453d1..2ad9858e4 100644
> --- a/drivers/net/i40e/i40e_ethdev.h
> +++ b/drivers/net/i40e/i40e_ethdev.h
> @@ -61,7 +61,8 @@
>  #define I40E_NUM_MACADDR_MAX       64
>  /* Maximum number of VFs */
>  #define I40E_MAX_VF               128
> -
> +/*flag of no loopback*/
> +#define I40E_AQ_LB_MODE_NONE	  0x0
>  /*
>   * vlan_id is a 12 bit number.
>   * The VFTA array is actually a 4096 bit array, 128 of 32bit elements.
> --
> 2.11.0