> -----Original Message-----
> From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of David Hunt
> Sent: Saturday, August 26, 2017 12:02 AM
> To: dev@dpdk.org
> Cc: Hunt, David <david.h...@intel.com>; Marjanovic, Nemanja
> <nemanja.marjano...@intel.com>; Sexton, Rory <rory.sex...@intel.com>
> Subject: [dpdk-dev] [PATCH v1 10/10] net/i40e: set register for no drop
> 
> See the XL710 controller datasheet for more information on this register
> 
> Signed-off-by: Nemanja Marjanovic <nemanja.marjano...@intel.com>
> Signed-off-by: Rory Sexton <rory.sex...@intel.com>
> Signed-off-by: David Hunt <david.h...@intel.com>
> ---
>  drivers/net/i40e/i40e_ethdev.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index d9806fc..24b713e 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -1156,7 +1156,7 @@ eth_i40e_dev_init(struct rte_eth_dev *dev)
>        * in firmware in the future.
>        */
>       i40e_configure_registers(hw);
> -
> +     I40E_WRITE_REG(hw, I40E_PRTDCB_TC2PFC, 0xff);

What is the relationship with VM power manager?

And about no-drop setting, it is the responsibility of flow control, please 
check http://www.dpdk.org/dev/patchwork/patch/19449/


Thanks
Jingjing

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