From: "Guo, Jia" <jia.guo@intel.com>
To: "Xing, Beilei" <beilei.xing@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
"stable@dpdk.org" <stable@dpdk.org>,
"Zhang, HengjianX" <hengjianx.zhang@intel.com>
Subject: Re: [dpdk-stable] [PATCH] net/i40evf: fix packet loss issue for X722
Date: Wed, 24 Feb 2021 02:34:47 +0000 [thread overview]
Message-ID: <4ea4236364b54a89bd01d959afa350f2@intel.com> (raw)
In-Reply-To: <20210224020900.93574-1-beilei.xing@intel.com>
Acked-by: Jeff Guo <jia.guo@intel.com>
> -----Original Message-----
> From: Xing, Beilei <beilei.xing@intel.com>
> Sent: Wednesday, February 24, 2021 10:09 AM
> To: Guo, Jia <jia.guo@intel.com>
> Cc: dev@dpdk.org; Xing, Beilei <beilei.xing@intel.com>; stable@dpdk.org;
> Zhang, HengjianX <hengjianx.zhang@intel.com>
> Subject: [PATCH] net/i40evf: fix packet loss issue for X722
>
> From: Beilei Xing <beilei.xing@intel.com>
>
> When Tx queue number is more than Rx queue number, and RSS is enabled,
> there'll be packet loss with X722.
> The root cause is the lookup table is not configured correctly, since it uses
> VF's queue pair number but not Rx queue number.
>
> Fixes: 2da3ba746795 ("net/i40e: fix VF runtime queues RSS config")
> Cc: stable@dpdk.org
>
> Signed-off-by: Beilei Xing <beilei.xing@intel.com>
> Signed-off-by: Hengjian Zhang <hengjianx.zhang@intel.com>
> ---
> drivers/net/i40e/i40e_ethdev_vf.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/i40e/i40e_ethdev_vf.c
> b/drivers/net/i40e/i40e_ethdev_vf.c
> index 2909b4d894..0c9bd8d2c6 100644
> --- a/drivers/net/i40e/i40e_ethdev_vf.c
> +++ b/drivers/net/i40e/i40e_ethdev_vf.c
> @@ -2746,7 +2746,7 @@ i40evf_config_rss(struct i40e_vf *vf)
> }
>
> for (i = 0; i < rss_lut_size; i++)
> - lut_info[i] = i % vf->num_queue_pairs;
> + lut_info[i] = i % num;
>
> ret = i40evf_set_rss_lut(&vf->vsi, lut_info,
> rss_lut_size);
> --
> 2.26.2
next prev parent reply other threads:[~2021-02-24 2:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-24 2:09 beilei.xing
2021-02-24 2:34 ` Guo, Jia [this message]
2021-03-05 8:49 ` Zhang, Qi Z
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