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charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: CY8PR11MB7136.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 77edeb53-3dd4-4fd7-a95c-08db04c57b50 X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Feb 2023 02:30:42.6384 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Hsc/EGg2cYJ4A3gSl346rlR4px64fvxyLJkD9eR1VwsQBOMQfMEaPcX4Hx9pZXIknjCUXKujMkdWOvktLz2qKQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR11MB5957 X-OriginatorOrg: intel.com X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org > -----Original Message----- > From: Stephen Hemminger > Sent: 2023=1B$BG/=1B(B1=1B$B7n=1B(B29=1B$BF|=1B(B 1:18 > To: Ye, MingjinX > Cc: dev@dpdk.org; Yang, Qiming ; > stable@dpdk.org; Zhou, YidingX ; Zhang, Qi Z > > Subject: Re: [PATCH v8] doc: add PMD known issue >=20 > On Sat, 28 Jan 2023 06:01:38 +0000 > Mingjin Ye wrote: >=20 > > Add a known issue: Rx path dynamic change is not supported for PMD. > > > > Fixes: de853a3bb151 ("net/ice: disable DDP package on Windows") > > Cc: stable@dpdk.org > > > > Signed-off-by: Mingjin Ye > > --- > > doc/guides/nics/ice.rst | 12 ++++++++++++ > > 1 file changed, 12 insertions(+) > > > > diff --git a/doc/guides/nics/ice.rst b/doc/guides/nics/ice.rst index > > ce075e067c..115625523e 100644 > > --- a/doc/guides/nics/ice.rst > > +++ b/doc/guides/nics/ice.rst > > @@ -395,3 +395,15 @@ file is used by both the kernel driver and the DPD= K > PMD. > > > > Windows support: The DDP package is not supported on Windows so, > > loading of the package is disabled on Windows. > > + > > +ice: Rx path does not support dynamic change > > +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > + > > +The ice driver supports fast and offload rx path. When pmd is > > +initialized, the fast rx path is selected by default. Even if offload > > +is subsequently enabled through the API, which will not work because > > +the past rx path is still used. > > + > > +The ice driver does not support to change the rx path after > > +application is initialized. If HW offload is required, the > > +``--rx-offloads`` parameter should be used to choose the offload Rx pa= th > by default. >=20 > Is this when the device is stopped, or running. > Dynamic configuration of offload parameters is not safe on many devices. > Usually the device driver requires the device not be started to change > offloads. >=20 > The driver should reject in the API things it does not support. Thank you for your suggestion. I will review this issue with the reporter.