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

[Zhang, Helin]

Hi Yanglong

It seems your patch cannot be applied on my system. Please do a check on your patch.
In addition, please make sure your local git repo was cloned from the right sub-tree.
e.g. 'git clone http://dpdk.org/git/next/dpdk-next-net-intel'

Hi maintainers

I need your comments, ACK or NACK. Thanks!

Regards,
Helin

> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Yanglong Wu
> Sent: Monday, November 20, 2017 12:06 PM
> To: dev at dpdk.org
> Cc: Wu, Yanglong
> Subject: [dpdk-dev] [PATCH] net/i40e: i40e support mac loopback
> 
> According to loopback mode, setup loopback link or not.
> If loopback link is setted, packets will be sent to rx_q from tx_q
> directly.Loopback mode can be used to support testing task.
> 
> Signed-off-by: Yanglong Wu <yanglong.wu at intel.com>
> ---
>  drivers/net/i40e/base/i40e_adminq_cmd.h |  1 +
>  drivers/net/i40e/i40e_ethdev.c          | 12 +++++++++++
>  2 files changed, 13 insertions(+)
> 
> diff --git a/drivers/net/i40e/base/i40e_adminq_cmd.h
> b/drivers/net/i40e/base/i40e_adminq_cmd.h
> index c36da2a32..8171f877b 100644
> --- a/drivers/net/i40e/base/i40e_adminq_cmd.h
> +++ b/drivers/net/i40e/base/i40e_adminq_cmd.h
> @@ -2128,6 +2128,7 @@
> I40E_CHECK_CMD_LENGTH(i40e_aqc_an_advt_reg);
>  /* Set Loopback mode (0x0618) */
>  struct i40e_aqc_set_lb_mode {
>  	__le16	lb_mode;
> +#define I40E_AQ_LB_MODE_NONE   0x0
>  #define I40E_AQ_LB_PHY_LOCAL	0x01
>  #define I40E_AQ_LB_PHY_REMOTE	0x02
>  #define I40E_AQ_LB_MAC_LOCAL	0x04
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index f40c463aa..2e6aa9d0d 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -2048,6 +2048,17 @@ i40e_dev_start(struct rte_eth_dev *dev)
>  		}
>  	}
> 
> +	/* Enable mac loopback mode */
> +	if (hw->mac.type == I40E_MAC_XL710 &&
> +	    (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(INFO, "fail to set loopback link");
> +			goto err_up;
> +		}
> +	}
> +
>  	/* Apply link configure */
>  	if (dev->data->dev_conf.link_speeds & ~(ETH_LINK_SPEED_100M |
>  				ETH_LINK_SPEED_1G | ETH_LINK_SPEED_10G
> |
> --
> 2.11.0