[dpdk-dev] [PATCH v2] net/i40e: fix X722 performance drop

Ye Xiaolong xiaolong.ye at intel.com
Tue Mar 3 07:14:36 CET 2020


On 03/03, Qiming Yang wrote:
>Lack of GL_SWR_PM_UP_THR value for mac type 4x10G X722 caused it can't
>reach line rate in one queue one core forwarding case. It's about 1%
>performance drop.  This patch add value as:
>
> Device-ID  Value        Comments
> 0x37D0    0x03030303   4x10G FPK
>
>This value is hardware specific.
>
>Fixes: 3320d4a240da ("net/i40e: workaround performance degradation")
>Cc: stable at dpdk.org
>
>Signed-off-by: Qiming Yang <qiming.yang at intel.com>
>---
> drivers/net/i40e/i40e_ethdev.c | 1 +
> 1 file changed, 1 insertion(+)
>
>diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
>index 9fbda1c..c09b9b9 100644
>--- a/drivers/net/i40e/i40e_ethdev.c
>+++ b/drivers/net/i40e/i40e_ethdev.c
>@@ -10504,6 +10504,7 @@ i40e_get_swr_pm_cfg(struct i40e_hw *hw, uint32_t *value)
> 		{ I40E_GL_SWR_PM_EF_DEVICE(I40E_DEV_ID_KX_C) },
> 		{ I40E_GL_SWR_PM_EF_DEVICE(I40E_DEV_ID_10G_BASE_T) },
> 		{ I40E_GL_SWR_PM_EF_DEVICE(I40E_DEV_ID_10G_BASE_T4) },
>+		{ I40E_GL_SWR_PM_EF_DEVICE(I40E_DEV_ID_SFP_X722) },
> 
> 		{ I40E_GL_SWR_PM_SF_DEVICE(I40E_DEV_ID_KX_B) },
> 		{ I40E_GL_SWR_PM_SF_DEVICE(I40E_DEV_ID_QSFP_A) },
>-- 
>2.9.5
>

Acked-by: Xiaolong Ye <xiaolong.ye at intel.com>

Applied to dpdk-next-net-intel, Thanks.


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