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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?OOdgaABxtiqL79qiFkPwEVm/LisTqyVu1cxCZyG6ThCvXloIf46uRP5ma4pf?= =?us-ascii?Q?S1DJUkr8GLQTIfXlYKNxKhzdwRzjdMrN7wb7yAzFsi5E4fb9zarVeqyfmjmI?= =?us-ascii?Q?le10vZQDosuexrjeyyJoPeZfRjMsQfe89AftoP6yOkYH//5yb+4dtDgI8mEL?= =?us-ascii?Q?2Tfwlwe76OQeuNOioEI7nuC0Oe7S57UvLjb2utPygg2ChcsQLenoPrMzR9LA?= =?us-ascii?Q?5l4otoA1wQ1/sWJiZibdFXIu3knToy9CixAxO/itdO8ww69Ti+luPxZi5cvC?= =?us-ascii?Q?4yCdXvTeN4Cm4eJxotAsMqmjWXRoCC09BfW2dF8GmNplD2SX//OhuCrH5pTu?= =?us-ascii?Q?G/K4eIsOBtxj92sdIjKTRzX48KyH24D/uqB4qW3RHgezkmSZT3giOXQ3sT/u?= =?us-ascii?Q?g+TxB15K73EGUCLH4mvJoi0HMX7Xc5Iw6GX2I1vxUenLJsCTuzxkCcyS1o9Q?= =?us-ascii?Q?pc9dKQL4dJBBQrkPmERQhZAUhOwlnsssKdfenpq+QLRaT9Tj2bGEirplyDpU?= =?us-ascii?Q?ZvmT3/3/HwmqRQRTlcQegjtfmvJnOsc2dZ+BrdVJOGFDqfWlblKwvfdII5LH?= =?us-ascii?Q?wR+iStOEBAmm1Ko5jzxTyf93fRIwlDoeGTLGLyPidVIliOlcFyEeDXF3YTEm?= =?us-ascii?Q?hbV/dI/OuXAbdA43hv6lHnSqza/CewacbWPGLDtqZY7+viaNdyLNR37LjPHS?= =?us-ascii?Q?bflVD+2CO7wXC4AEzFGtJWtIm734uM7mL9BUwJ82AB/SN8tzkPoI5P4gPHKn?= =?us-ascii?Q?JeSn337b+83aKapSdCDfAD18VCc8pw3TNBHLFQmTTaHhYYVFEOr6OLQlEt9m?= =?us-ascii?Q?WSFMmqcCXNU/s626VEnt4PA2+STUM/hS77LUa132JPPrn44cYOG6CrFB3zU3?= =?us-ascii?Q?JFQbokymceS6wruPKfIuZu8W+uKzv9HFx2G8g9HigEo7Vk5DyonmU+Q86eBH?= =?us-ascii?Q?R/d4aGvZp3ovGbB0ovsGrOdUbkAuE2n6AbqtPmfj9wjhKBqlCcsOdiIRJs5r?= =?us-ascii?Q?GWRlK6lrJJ1rcFq/5q2TV2eO3sWS4EgrCYh0xk9jjTGlE8DRPlH9M7+wMXiW?= =?us-ascii?Q?t49zNL6RT10HTUnUBfdWxw/KOi92whVe23kmUBFhdeFrWrOEyg/ctupN3Wpa?= =?us-ascii?Q?oUC76fjcYB84ko4pAWu6zVKGGIUxNWqJJFb1lPz+EEsMnGh3h7kJIEVljyQD?= =?us-ascii?Q?Dzt2vPA9ZL2MiF0ZyRq32KkWQhm3Jq/kLDETyXdNo1INg4AtIxAlumeqmlZc?= =?us-ascii?Q?hefGZa6Avxx3nu54i6Aez5PwOfxQ55oCRcGQCh0fMKajjAa+Ei5ecaSjZvFR?= =?us-ascii?Q?siBT1LBAJT0LX9yAc313PJYSgLk/eCYqa16MR8M4AGuE4PL8OJc/yYZ1B18B?= =?us-ascii?Q?L6/dsrxAAExSRQnagDgH9JW5ZI7646j1mcvK7hYR3/KUbL/6hWyh4poY4WWa?= =?us-ascii?Q?cNNIZKDf2Z6u7Of+CON0AOMi3zf3lgdUpTtM1Oojnzqeo5GOmP+ZqwwfzB1M?= =?us-ascii?Q?WngNBIlPdKlUo5PqH+afVMUIqbGZVb4N76yfdLtB1+pur9aw2NXcNYpLTzeT?= =?us-ascii?Q?s7V9Hmcjp8qPYVnFp9cWGy6OoRfHDqu1QwRqAlzUfFUHTOk7XC0XFaoUFFhv?= =?us-ascii?Q?WQ=3D=3D?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2003449b-393a-4475-267b-08db3b46475e X-MS-Exchange-CrossTenant-AuthSource: AM0PR04MB6452.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Apr 2023 11:08:43.5489 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 8S2TdX2joFIe3vNSnKz5qA/xBOr31MflDozUT4EpCtiV4G57W1yZ3fOUbpZ+bcZhr8CDwZuCCrrINhOUn9CyDA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM7PR04MB6965 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Wed, Apr 12, 2023 at 12:50:34PM +0200, Michael Walle wrote: > >> +/* Hardware layer of the SO_TIMESTAMPING provider */ > >> +enum timestamping_layer { > >> + SOF_MAC_TIMESTAMPING =3D (1<<0), > >> + SOF_PHY_TIMESTAMPING =3D (1<<1), > > > > What does SOF_ stand for? > > I'd guess start of frame. The timestamp will be taken at the > beginning of the frame. I would suggest (with all due respect) that it was an inapt adaptation of the Socket Option Flags that can be seen in Documentation/networking/timestamping.rst. These are not socket option flags (because these settings are not per socket), so the namespace/prefix is not really correctly used here.