From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <dev-bounces@dpdk.org>
Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124])
	by inbox.dpdk.org (Postfix) with ESMTP id 18383427E7;
	Tue, 21 Mar 2023 02:00:53 +0100 (CET)
Received: from mails.dpdk.org (localhost [127.0.0.1])
	by mails.dpdk.org (Postfix) with ESMTP id 944D440697;
	Tue, 21 Mar 2023 02:00:52 +0100 (CET)
Received: from smtpbguseast1.qq.com (smtpbguseast1.qq.com [54.204.34.129])
 by mails.dpdk.org (Postfix) with ESMTP id 00A4440693
 for <dev@dpdk.org>; Tue, 21 Mar 2023 02:00:50 +0100 (CET)
X-QQ-mid: bizesmtp63t1679360445tmip6vrh
Received: from DESKTOPGF9TM7H ( [125.42.32.4]) by bizesmtp.qq.com (ESMTP) with 
 id ; Tue, 21 Mar 2023 09:00:44 +0800 (CST)
X-QQ-SSF: 00000000000000C0I000000A0000000
X-QQ-GoodBg: 0
From: <hfli@netitest.com>
To: "'Stephen Hemminger'" <stephen@networkplumber.org>
Cc: <dev@dpdk.org>
References: <1CCF1B14C9842CED+002501d95b20$272f1b60$758d5220$@netitest.com>
 <20230320095342.756879fb@hermes.local>
In-Reply-To: <20230320095342.756879fb@hermes.local>
Subject: =?UTF-8?Q?=E5=9B=9E=E5=A4=8D:_=E5=9B=9E=E5=A4=8D:_af=5Fpacket_can't_send?=
 =?UTF-8?Q?_packet_more_than_framecnt?=
Date: Tue, 21 Mar 2023 09:00:45 +0800
Message-ID: <51FE0C642670EC4B+002901d95b90$91ed5a50$b5c80ef0$@netitest.com>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Mailer: Microsoft Outlook 16.0
Thread-Index: AQJ7S/WF+VpExSgouDpcVBFXPDSmcgJLE5Lsra4v1rA=
Content-Language: zh-cn
X-QQ-SENDSIZE: 520
Feedback-ID: bizesmtp:netitest.com:qybglogicsvr:qybglogicsvr5
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://mails.dpdk.org/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://mails.dpdk.org/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://mails.dpdk.org/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org

Hi Stephen,

Thanks for your response, my OS is CentOS7.9, so the kernel is 3.10. =
However, the issue has been resolved depend on new DPDK code.


Regards,
Haifeng

-----=E9=82=AE=E4=BB=B6=E5=8E=9F=E4=BB=B6-----
=E5=8F=91=E4=BB=B6=E4=BA=BA: Stephen Hemminger =
<stephen@networkplumber.org>=20
=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2023=E5=B9=B43=E6=9C=8821=E6=97=A5 =
0:54
=E6=94=B6=E4=BB=B6=E4=BA=BA: hfli@netitest.com
=E6=8A=84=E9=80=81: dev@dpdk.org
=E4=B8=BB=E9=A2=98: Re: =E5=9B=9E=E5=A4=8D: af_packet can't send packet =
more than framecnt

On Mon, 20 Mar 2023 19:36:02 +0800
<hfli@netitest.com> wrote:

> Hi,
>=20
> The issue has been resolved when I patched new code from dpdk 22.12,=20
> my dpdk version is 19.11
>=20
> Index: rte_eth_af_packet.c
> =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> --- rte_eth_af_packet.c (=E7=89=88=E6=9C=AC 44115)
> +++ rte_eth_af_packet.c (=E7=89=88=E6=9C=AC 44128)
> @@ -169,6 +169,29 @@
>  }
> =20
>  /*
> + * Check if there is an available frame in the ring  */ static inline =

> +int tx_ring_status_available(uint32_t tp_status) {
> +       /*
> +        * We eliminate the timestamp status from the packet status.
> +        * This should only matter if timestamping is enabled on the =
socket,
> +        * but there is a bug in the kernel which is fixed in newer
> releases.
> +        *
> +        * See the following kernel commit for reference:
> +        *     commit 171c3b151118a2fe0fc1e2a9d1b5a1570cfe82d2
> +        *     net: packetmmap: fix only tx timestamp on request


Thanks for investigating, what kernel are you using?
That bug was fixed in 5.13 kernel (in 2021-05-11) almost 2 years ago.
It looks like it was also fixed in the LTS stable kernels.

DPDK probably should not be modified to handle kernel bugs that are =
ready fixed in the current kernel LTS versions.