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boundary="------------uq24CY9W1f7X2t6FyXObr2f0"; protected-headers="v1" Message-ID: <47850b29-0ed2-4a24-9047-e73905657535@intel.com> Date: Tue, 25 Nov 2025 14:07:41 -0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] net/iavf: check PTP capabilities during init To: "Hore, Soumyadeep" , "dev@dpdk.org" Cc: "Greenwalt, Paul" , "Medvedkin, Vladimir" , "Jiale, SongX" References: <20251121-jk-dpdk-iavf-rx-timestamping-fix-v1-1-21c9a337a6f2@intel.com> Content-Language: en-US From: Jacob Keller Autocrypt: addr=jacob.e.keller@intel.com; keydata= xjMEaFx9ShYJKwYBBAHaRw8BAQdAE+TQsi9s60VNWijGeBIKU6hsXLwMt/JY9ni1wnsVd7nN J0phY29iIEtlbGxlciA8amFjb2IuZS5rZWxsZXJAaW50ZWwuY29tPsKTBBMWCgA7FiEEIEBU qdczkFYq7EMeapZdPm8PKOgFAmhcfUoCGwMFCwkIBwICIgIGFQoJCAsCBBYCAwECHgcCF4AA CgkQapZdPm8PKOiZAAEA4UV0uM2PhFAw+tlK81gP+fgRqBVYlhmMyroXadv0lH4BAIf4jLxI UPEL4+zzp4ekaw8IyFz+mRMUBaS2l+cpoBUBzjgEaFx9ShIKKwYBBAGXVQEFAQEHQF386lYe MPZBiQHGXwjbBWS5OMBems5rgajcBMKc4W4aAwEIB8J4BBgWCgAgFiEEIEBUqdczkFYq7EMe apZdPm8PKOgFAmhcfUoCGwwACgkQapZdPm8PKOjbUQD+MsPBANqBUiNt+7w0dC73R6UcQzbg cFx4Yvms6cJjeD4BAKf193xbq7W3T7r9BdfTw6HRFYDiHXgkyoc/2Q4/T+8H In-Reply-To: --------------uq24CY9W1f7X2t6FyXObr2f0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 11/25/2025 2:30 AM, Hore, Soumyadeep wrote: > Hi Jacob, >=20 > Currently PTP features are not enabled in DPDK. We only have the Rx tim= estamp API in place. Typically the change that you want needs to be imple= mented in ethdev_ops.timesync_enable(), which is not implemented. >=20 I'm not sure I follow you here. For iAVF Rx timestamping is considered part of the PTP capabilities. We shouldn't be reporting Rx timestamp offload if Rx timestamping is not available. There are some circumstances where the PF will not report Rx timestampding (and will not enable it) because of capabilities mismatch. However, DPDK driver is saying Rx timestamp offload works, and trying (and failing) to enable it in those cases. However, the check for where we report Rx timestamp offload was before we negotiated properly with the PF, which is what this change is trying to fix. This has nothing to do with other PTP features. Thanks, Jake --------------uq24CY9W1f7X2t6FyXObr2f0-- --------------LOfbErn7oGKed5jOFAXZ3uWY Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature.asc" -----BEGIN PGP SIGNATURE----- wnsEABYIACMWIQQgQFSp1zOQVirsQx5qll0+bw8o6AUCaSYorQUDAAAAAAAKCRBqll0+bw8o6EGG AQDUSeGnmKS4haRp4L0eHXB/olAXp7rlg8eEbrjRXmj1owEA4dVrz+XKnCSVF5x9Zxh4FEXLmj+F XfrZ+P4T1NEjmQo= =xgzL -----END PGP SIGNATURE----- --------------LOfbErn7oGKed5jOFAXZ3uWY--