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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SJ0PR11MB4893.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: a1af20ce-7fa1-49e8-55bd-08d903dc296e X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Apr 2021 09:10:37.1714 (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: mHrwTj7GrNDWUYi/pkcFX6BXHX/maHW0LB2iVWx87Pw0KQIuUij1gJEaZRB4bZD5+hL1OH3Gnkt1agCQVLZkeA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR11MB3318 X-OriginatorOrg: intel.com Subject: Re: [dpdk-dev] [PATCH v2] net/igc: fix Rx packet size error 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 Sender: "dev" > -----Original Message----- > From: dev On Behalf Of Alvin Zhang > Sent: Tuesday, April 20, 2021 10:05 AM > To: Wang, Haiyue ; Guo, Jia > Cc: dev@dpdk.org; Zhang, AlvinX ; stable@dpdk.org > Subject: [dpdk-dev] [PATCH v2] net/igc: fix Rx packet size error >=20 > When DEV_RX_OFFLOAD_KEEP_CRC is enabled, the PMD will minus 4 bytes of > CRC from the size of a packet, but the NIC will strip the CRC because the= CRC > strip bit in DVMOLR register is not cleared. This will cause the size of = a packet > to be 4 bytes less. >=20 > This patch updates the CRC strip bit according to whether > DEV_RX_OFFLOAD_KEEP_CRC is enabled. >=20 > Fixes: a5aeb2b9e225 ("net/igc: support Rx and Tx") > Cc: stable@dpdk.org >=20 > Signed-off-by: Alvin Zhang Tested-by: Lingli Chen