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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM4PR12MB5054.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 18fe5563-33de-4306-a6f3-08d93184bfb6 X-MS-Exchange-CrossTenant-originalarrivaltime: 17 Jun 2021 11:40:47.0224 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Dvw6Cl1y+NfzukwhoRQx1yZxTeqioURt30U6OjJQwBIzqDmg8yBGUY9Vz73ogc18LMxTqNA6ygViM5IKa0x9bQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5200 Subject: Re: [dpdk-dev] [PATCH] net/mlx5: convert meta register to big-endian 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" Hi, > -----Original Message----- > From: Alexander Kozyrev > Sent: Wednesday, June 16, 2021 5:46 PM > To: dev@dpdk.org > Cc: Raslan Darawsheh ; Slava Ovsiienko > ; Matan Azrad > Subject: [PATCH] net/mlx5: convert meta register to big-endian >=20 > Metadata is stored in the CPU order (little-endian format on x86), > while all the packet header fields are stored in the network order. > That leads to the wrong results whenever we try to use the metadata > value in the modify_field actions: bytes are swapped as a result. >=20 > Convert the metadata into the big-endian format before storing it > in the Mellanox NIC to achieve consistent behaviour. >=20 > Signed-off-by: Alexander Kozyrev > Acked-by: Viacheslav Ovsiienko Patch applied to next-net-mlx, Kindest regards, Raslan Darawsheh