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From: "Chen, Jing D" <jing.d.chen@intel.com>
To: "Xie, Huawei" <huawei.xie@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] lib/librte_pmd_i40e: i40e vlan filter set fix
Date: Sat, 11 Oct 2014 07:20:08 +0000
Message-ID: <4341B239C0EFF9468EE453F9E9F4604D015F2482@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <1411883352-22166-1-git-send-email-huawei.xie@intel.com>


> -----Original Message-----
> From: Xie, Huawei
> Sent: Sunday, September 28, 2014 1:49 PM
> To: dev@dpdk.org
> Cc: Xie, Huawei; Chen, Jing D; Zhang, Helin
> Subject: [PATCH] lib/librte_pmd_i40e: i40e vlan filter set fix
> 
> the right shift bits should be 5 rather than 4.
>     vid_idx = (uint32_t) ((vlan_id >> 5 ) & 0x7F)
> 
> Signed-off-by: Huawei Xie <huawei.xie@intel.com>
> CC: Jing Chen <jing.d.chen@intel.com>
> CC: Helin Zhang <helin.zhang@intel.com>
> 
> ---
>  lib/librte_pmd_i40e/i40e_ethdev.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/lib/librte_pmd_i40e/i40e_ethdev.c
> b/lib/librte_pmd_i40e/i40e_ethdev.c
> index 9009bd4..9c9d831 100644
> --- a/lib/librte_pmd_i40e/i40e_ethdev.c
> +++ b/lib/librte_pmd_i40e/i40e_ethdev.c
> @@ -3786,14 +3786,11 @@ i40e_set_vlan_filter(struct i40e_vsi *vsi,
>  {
>  	uint32_t vid_idx, vid_bit;
> 
> -#define UINT32_BIT_MASK      0x1F
> -#define VALID_VLAN_BIT_MASK  0xFFF
>  	/* VFTA is 32-bits size array, each element contains 32 vlan bits, Find
> the
>  	 *  element first, then find the bits it belongs to
>  	 */
> -	vid_idx = (uint32_t) ((vlan_id & VALID_VLAN_BIT_MASK) >>
> -		  sizeof(uint32_t));
> -	vid_bit = (uint32_t) (1 << (vlan_id & UINT32_BIT_MASK));
> +	vid_idx = (uint32_t) ((vlan_id >> 5 ) & 0x7F);
> +	vid_bit = (uint32_t) (1 << (vlan_id & 0x1F));
> 
>  	if (on)
>  		vsi->vfta[vid_idx] |= vid_bit;
> --
> 1.8.1.4

Please try to use macro to replace numbers.

  reply	other threads:[~2014-10-11  7:12 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-28  5:49 Huawei Xie
2014-10-11  7:20 ` Chen, Jing D [this message]
2014-11-06  0:22 ` Xie, Huawei
2014-11-06  8:37   ` Thomas Monjalon

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