Re: [dpdk-dev] [PATCH] drivers/net/e1000/igb_ethdev.c:fix eth_igb_add_del_flex_filter

["Lu, Wenzhuo" <wenzhuo.lu@intel.com>]

Hi Motomu,

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of motomu
> Sent: Monday, May 25, 2015 12:18 AM
> To: dev@dpdk.org
> Subject: [dpdk-dev] [PATCH] drivers/net/e1000/igb_ethdev.c:fix
> eth_igb_add_del_flex_filter
> 
> From: Motomu Utsumi <motomu@hongo.wide.ad.jp>
> 
> in add flexfiler it always write to same register address, so when try to adapt
> some filters only last one is enabled.
I don't understand what the " same register address " means. So, I don't think it's necessary to change the code. Would you like to give more details? Thanks.

Wenzhuo

> I substitute value based on based on flex_filter->index for reg_off.
> 
> in del flexfilter, it delete target filter and also delete first filter because of similar
> reason.
> I substitute value based on based on it->index for reg_off.
> 
> ---
>  drivers/net/e1000/igb_ethdev.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
> index e4b370d..5a7f50a 100644
> --- a/drivers/net/e1000/igb_ethdev.c
> +++ b/drivers/net/e1000/igb_ethdev.c
> @@ -2781,10 +2781,6 @@ eth_igb_add_del_flex_filter(struct rte_eth_dev *dev,
>  	}
> 
>  	wufc = E1000_READ_REG(hw, E1000_WUFC);
> -	if (flex_filter->index < E1000_MAX_FHFT)
> -		reg_off = E1000_FHFT(flex_filter->index);
> -	else
> -		reg_off = E1000_FHFT_EXT(flex_filter->index -
> E1000_MAX_FHFT);
> 
>  	if (add) {
>  		if (eth_igb_flex_filter_lookup(&filter_info->flex_list,
> @@ -2813,6 +2809,10 @@ eth_igb_add_del_flex_filter(struct rte_eth_dev *dev,
>  			rte_free(flex_filter);
>  			return -ENOSYS;
>  		}
> +    if (flex_filter->index < E1000_MAX_FHFT)
> +      reg_off = E1000_FHFT(flex_filter->index);
> +    else
> +      reg_off = E1000_FHFT_EXT(flex_filter->index - E1000_MAX_FHFT);
> 
>  		E1000_WRITE_REG(hw, E1000_WUFC, wufc |
> E1000_WUFC_FLEX_HQ |
>  				(E1000_WUFC_FLX0 << flex_filter->index));
> @@ -2841,6 +2841,10 @@ eth_igb_add_del_flex_filter(struct rte_eth_dev *dev,
>  			rte_free(flex_filter);
>  			return -ENOENT;
>  		}
> +    if (it->index < E1000_MAX_FHFT)
> +      reg_off = E1000_FHFT(it->index);
> +    else
> +      reg_off = E1000_FHFT_EXT(it->index - E1000_MAX_FHFT);
> 
>  		for (i = 0; i < E1000_FHFT_SIZE_IN_DWD; i++)
>  			E1000_WRITE_REG(hw, reg_off + i * sizeof(uint32_t), 0);
> --
> 1.8.3.1