From: "Zhang, Qi Z" <qi.z.zhang@intel.com>
To: Qiming Chen <chenqiming_huawei@163.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "Xing, Beilei" <beilei.xing@intel.com>,
"Wu, Jingjing" <jingjing.wu@intel.com>,
"stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] net/iavf: fix rxq buf size alignment
Date: Wed, 15 Sep 2021 02:45:33 +0000 [thread overview]
Message-ID: <47416ad823b4419b9d03cbdb6d8d7463@intel.com> (raw)
In-Reply-To: <20210911020756.3097-1-chenqiming_huawei@163.com>
> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Qiming Chen
> Sent: Saturday, September 11, 2021 10:08 AM
> To: dev@dpdk.org
> Cc: Xing, Beilei <beilei.xing@intel.com>; Wu, Jingjing <jingjing.wu@intel.com>;
> Qiming Chen <chenqiming_huawei@163.com>; stable@dpdk.org
> Subject: [dpdk-dev] [PATCH] net/iavf: fix rxq buf size alignment
>
> The RTE_ALIGN macro is aligned upwards. If the buf_size variable is not aligned
> with 1 << I40E_RXQ_CTX_DBUFF_SHIFT, the rx_buf_len is larger than the
> actual mbuf memory after the operation. When receiving the packet, if the
> packet is larger than the configured buf_size, it will cause a memory stepping
> event.
>
> The patch uses the RTE_ALIGN_FLOOR down alignment macro to correct the
> problem.
>
> Fixes: 69dd4c3d0898 ("net/avf: enable queue and device")
> Cc: stable@dpdk.org
>
> Signed-off-by: Qiming Chen <chenqiming_huawei@163.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Applied to dpdk-next-net-intel.
Thanks
Qi
prev parent reply other threads:[~2021-09-15 2:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-11 2:07 Qiming Chen
2021-09-15 2:45 ` Zhang, Qi Z [this message]
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