From nobody Tue Dec 2 01:07:43 2025 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 612DC1C5D59 for ; Sat, 22 Nov 2025 14:08:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763820525; cv=none; b=kTGaI1jovDw0B8K7FAKlDdzcBjuORznw4PFeoTA8mguGOqNixoGgkO2/nP5VckW2qgRQ/BBRiF4uUjz0WeHI73oe/MENjlTbBTho78bsLtk2Ehxl2mwvgyBa5cgsk36OORUtwlo7lT3ZiM2qYTxrpGeW2M7QQm0EazqGSOAHloA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763820525; c=relaxed/simple; bh=hjk+o8o80paPyWfwSKG+PHyDrg8KCIKeJ6mVpIFxuBQ=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=h6AsBRy3kicGGc/wZdReA6K0YiF+E/XllZZu0v4mwOKYVd2BAzeJkqjmcWJK0llz6vAz3Tn1iEVzhd5bmJU6kQpdduivPlzejUmn8B0DkN5TngG+v379cITTBa6nwfKd+fjjCylzE548ghdNLCHkw1ij6GliIEiML5eSHY0FX/s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--almasrymina.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=LqzUKHwz; arc=none smtp.client-ip=209.85.215.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--almasrymina.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="LqzUKHwz" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-b969f3f5c13so2821550a12.0 for ; Sat, 22 Nov 2025 06:08:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1763820523; x=1764425323; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=CiKyvEObttkjdlU/HxkVL5YvXx0AELKfdJVDLDR7O7E=; b=LqzUKHwzKIMxLrCN8k3l8+ttT4HA8gh4yB11l9563KjsYhTj3wGIiLR4R8dpCPGuEe Bkwk4fqJVg/XH8Bf/Ti6krmrW5j4a/2IAfJDUcr7w+WL0h78Itex01u5MlyCBG7waUFb GGu+i9K9YCuZRE/V/pt4mX3rsluKeZoxV0fEoMnCKtOxLr09GFxUDoBMOsry9BpZcSui vGEFvF4Qv/8ythzf8zeAXXTq3qVyHK3U4lo8GdRT2SmE2AXDZ+2VbMUs2JvQv21fZaQn dE8YVqwRbGLrOjcSr1RsXsLI7fb9kneJLWfulXv8PBZaTT+J8WFbuOSwEBM8WIIl6Y2i yXxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763820523; x=1764425323; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=CiKyvEObttkjdlU/HxkVL5YvXx0AELKfdJVDLDR7O7E=; b=u9F/QXJ91/EU6v69St9WLg9gkmwmpdh79atKDPiTfMwH6CzyVDcgs+8DWYzfE73/Fs h3qFjXDyY4nakl1eMYoEoUgVj1uxeVrxVhz8pk9jUwHImG04hHThrUlO12XNUm8n9IHR /GW9pnc8KgRJPRsIiaJnAGuj1One3VWvRgsif4oUNjYUB0njN9SnR9QVLlLf9ldKcVyY Nrc2YpnxEzhtfL3/GT/1XR6JWph2FIz/RQtcE5HHbhg7TTqCONl26RHpfdE/+xXXGGX6 Rc+Cp5vOa/wZJ7AsLLoik+HuW+jjIAoyQCf1tpoXJe3BcJ1Kuor7d0/5n+GpKT6ESE7A MZrw== X-Forwarded-Encrypted: i=1; AJvYcCVJN+dQ9lIzRrqwdvDikXdgcg3rGjfhdrly0G1Pm9pZRzJTAYt7I6MaOYjM4IvUnPqslGe3yLwVaFoB37A=@vger.kernel.org X-Gm-Message-State: AOJu0Yyop0q3KBmhdd9NH2dkLvrwmA+TYySxMbPDhXSIUlY910YsmFQg V3j0kYJ63AjpA27vxjsTO6se1xxcIR0GiVma1zi0yWJrDzg9C7vdiZtKBhICFNggVK27dB10KIk iqjxwuC8TgeVLNIopB6YManePuw== X-Google-Smtp-Source: AGHT+IGiaUwHMiMte8op02BQ1Y7EuVvIJxvCeVDha4rnblhCSxc3V54Qj6e3HJk/7vwUWsfEzm3eiefI1xmjTS9oQQ== X-Received: from dlbuy16.prod.google.com ([2002:a05:7022:1e10:b0:119:49ca:6b95]) (user=almasrymina job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7022:4a6:b0:119:e55a:9c05 with SMTP id a92af1059eb24-11c9d864ef6mr3230515c88.33.1763820523481; Sat, 22 Nov 2025 06:08:43 -0800 (PST) Date: Sat, 22 Nov 2025 14:08:36 +0000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.52.0.rc2.455.g230fcf2819-goog Message-ID: <20251122140839.3922015-1-almasrymina@google.com> Subject: [PATCH net-next v1] idpf: export RX hardware timestamping information to XDP From: Mina Almasry To: netdev@vger.kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org Cc: YiFei Zhu , Alexei Starovoitov , Daniel Borkmann , "David S. Miller" , Jakub Kicinski , Jesper Dangaard Brouer , John Fastabend , Stanislav Fomichev , Tony Nguyen , Przemek Kitszel , Andrew Lunn , Eric Dumazet , Paolo Abeni , Alexander Lobakin , Richard Cochran , intel-wired-lan@lists.osuosl.org, Mina Almasry Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: YiFei Zhu The logic is similar to idpf_rx_hwtstamp, but the data is exported as a BPF kfunc instead of appended to an skb. A idpf_queue_has(PTP, rxq) condition is added to check the queue supports PTP similar to idpf_rx_process_skb_fields. Cc: intel-wired-lan@lists.osuosl.org Signed-off-by: YiFei Zhu Signed-off-by: Mina Almasry Reviewed-by: Aleksandr Loktionov --- drivers/net/ethernet/intel/idpf/xdp.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/net/ethernet/intel/idpf/xdp.c b/drivers/net/ethernet/i= ntel/idpf/xdp.c index 21ce25b0567f..850389ca66b6 100644 --- a/drivers/net/ethernet/intel/idpf/xdp.c +++ b/drivers/net/ethernet/intel/idpf/xdp.c @@ -2,6 +2,7 @@ /* Copyright (C) 2025 Intel Corporation */ =20 #include "idpf.h" +#include "idpf_ptp.h" #include "idpf_virtchnl.h" #include "xdp.h" #include "xsk.h" @@ -369,6 +370,31 @@ int idpf_xdp_xmit(struct net_device *dev, int n, struc= t xdp_frame **frames, idpf_xdp_tx_finalize); } =20 +static int idpf_xdpmo_rx_timestamp(const struct xdp_md *ctx, u64 *timestam= p) +{ + const struct virtchnl2_rx_flex_desc_adv_nic_3 *rx_desc; + const struct libeth_xdp_buff *xdp =3D (typeof(xdp))ctx; + const struct idpf_rx_queue *rxq; + u64 cached_time, ts_ns; + u32 ts_high; + + rx_desc =3D xdp->desc; + rxq =3D libeth_xdp_buff_to_rq(xdp, typeof(*rxq), xdp_rxq); + + if (!idpf_queue_has(PTP, rxq)) + return -ENODATA; + if (!(rx_desc->ts_low & VIRTCHNL2_RX_FLEX_TSTAMP_VALID)) + return -ENODATA; + + cached_time =3D READ_ONCE(rxq->cached_phc_time); + + ts_high =3D le32_to_cpu(rx_desc->ts_high); + ts_ns =3D idpf_ptp_tstamp_extend_32b_to_64b(cached_time, ts_high); + + *timestamp =3D ts_ns; + return 0; +} + static int idpf_xdpmo_rx_hash(const struct xdp_md *ctx, u32 *hash, enum xdp_rss_hash_type *rss_type) { @@ -392,6 +418,7 @@ static int idpf_xdpmo_rx_hash(const struct xdp_md *ctx,= u32 *hash, } =20 static const struct xdp_metadata_ops idpf_xdpmo =3D { + .xmo_rx_timestamp =3D idpf_xdpmo_rx_timestamp, .xmo_rx_hash =3D idpf_xdpmo_rx_hash, }; =20 base-commit: e05021a829b834fecbd42b173e55382416571b2c --=20 2.52.0.rc2.455.g230fcf2819-goog