From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0D196CD4846 for ; Tue, 12 May 2026 00:51:38 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id D7A8A4066C; Tue, 12 May 2026 02:51:11 +0200 (CEST) Received: from mail-qt1-f202.google.com (mail-qt1-f202.google.com [209.85.160.202]) by mails.dpdk.org (Postfix) with ESMTP id 0083040657 for ; Tue, 12 May 2026 02:51:08 +0200 (CEST) Received: by mail-qt1-f202.google.com with SMTP id d75a77b69052e-50b220c72bbso88851671cf.1 for ; Mon, 11 May 2026 17:51:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1778547068; x=1779151868; darn=dpdk.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=oYgU6QxNJNnACp/oMkuQg16zbBDGoRiTUDEq8kcYrME=; b=UH8ATi32elvwGY2YS9AYTUET9QGDSVc9wsRZ/IghyUskLEh4PVBDlio3IavR2g3o75 bNykLCRrWteHA1ifIP21r3Z42lmfLwNxfOpjsWMG0y0nH3mBG3vEt2oNuZAFt8Srm4Lc I/SMKuDIluuamWKEyOsA1oZN8zaCVyavRLZBe5ZN4JwTR8lXdaDm+6cTAi9dAOSUyKTW cpwtnAZjsm0o/TxtbdbIxIcULl3qes589XR0vGrdiWZN2nS+D87uwk1Qxwnkm0yKDG+F Yv4qQyeaT9CmctgwMKTx7sOHF+3odXpzakMFoMzZsMRB/pS6VscjucnG9j7wzmIIiYjN h6DQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778547068; x=1779151868; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=oYgU6QxNJNnACp/oMkuQg16zbBDGoRiTUDEq8kcYrME=; b=WcDv4VPMfQ+HRHhOx2H5Q+5Uwuk0GUy/lAvWZtfrbL6WU+rsSbWJ05YXgazZHj2ZAT ms/YhC28Osz0A7a1iwx4TZKjbdUgkgvkMZnBgi/Nt4SxktLCBz8aUtyGRYLAWG25syNs L7SiskhKeIsAnLA9sN/5HJ6ch32ttlunF+B4gLH22dVs+HiN8Rg5oKu+mkSIAiR4DZ/Y P4NFvCxC76prIxN0J5kSkTZqRdMhtgtih7jtfvmlTslXhsawqlmNX9szS3IQ1aQrCuv9 TBY1ir5I/M34Jf8OaHi6vG0Px6Hxr4cbVf22KIqsZSeb0R3yrYyyN7mtRnTF9FjtDM63 rg6Q== X-Gm-Message-State: AOJu0YyA1k8WYoyl5GpFRTPWDUrov1ReqyCVTdK6fYQS6nM7In+TXUBg /Qq9dTLycAK1AAsh/HmtVLWeSLbBD2pX1HAvMllRLJrCADvSv5Kbl2FwpYtRrXhGn9c00wsluZg Wq339jA== X-Received: from qtod20.prod.google.com ([2002:ac8:5354:0:b0:50f:ae4d:1d48]) (user=blasko job=prod-delivery.src-stubby-dispatcher) by 2002:a05:622a:2c7:b0:50e:6302:340b with SMTP id d75a77b69052e-514d2270321mr13304951cf.53.1778547068032; Mon, 11 May 2026 17:51:08 -0700 (PDT) Date: Tue, 12 May 2026 00:50:54 +0000 In-Reply-To: <20260512005057.944672-1-blasko@google.com> Mime-Version: 1.0 References: <20260512005057.944672-1-blasko@google.com> X-Mailer: git-send-email 2.54.0.563.g4f69b47b94-goog Message-ID: <20260512005057.944672-6-blasko@google.com> Subject: [PATCH 5/6] net/gve: support read clock ethdev op From: mark-blasko To: stephen@networkplumber.org Cc: dev@dpdk.org, Mark Blasko , Joshua Washington , "Jasper Tran O'Leary" Content-Type: text/plain; charset="UTF-8" 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 From: Mark Blasko Implement the read_clock operation in eth_dev_ops. The function calls the AdminQ command to fetch the current NIC timestamp synchronously, updates the cached timestamp used for reconstruction, and returns the full 64-bit value. Signed-off-by: Mark Blasko Reviewed-by: Joshua Washington Reviewed-by: Jasper Tran O'Leary --- drivers/net/gve/gve_ethdev.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/net/gve/gve_ethdev.c b/drivers/net/gve/gve_ethdev.c index b36bc7266e..e1f2585ede 100644 --- a/drivers/net/gve/gve_ethdev.c +++ b/drivers/net/gve/gve_ethdev.c @@ -1271,6 +1271,34 @@ gve_flow_ops_get(struct rte_eth_dev *dev, const struct rte_flow_ops **ops) return 0; } +static int +gve_read_clock(struct rte_eth_dev *dev, uint64_t *clock) +{ + struct gve_priv *priv = dev->data->dev_private; + uint64_t ts; + int err; + + if (!priv->nic_timestamp_supported) + return -EOPNOTSUPP; + + if (!priv->nic_ts_report_mz) + return -EIO; + + err = gve_adminq_report_nic_timestamp(priv, priv->nic_ts_report_mz->iova); + if (err != 0) + return err; + + ts = be64_to_cpu(priv->nic_ts_report->nic_timestamp); + *clock = ts; + + /* Update the cached value */ + rte_atomic_store_explicit(&priv->last_read_nic_timestamp, ts, rte_memory_order_relaxed); + rte_atomic_store_explicit(&priv->nic_ts_read_fails, 0, rte_memory_order_relaxed); + rte_atomic_store_explicit(&priv->nic_ts_stale, 0, rte_memory_order_release); + + return 0; +} + static const struct eth_dev_ops gve_eth_dev_ops = { .dev_configure = gve_dev_configure, .dev_start = gve_dev_start, @@ -1297,6 +1325,7 @@ static const struct eth_dev_ops gve_eth_dev_ops = { .rss_hash_conf_get = gve_rss_hash_conf_get, .reta_update = gve_rss_reta_update, .reta_query = gve_rss_reta_query, + .read_clock = gve_read_clock, }; static const struct eth_dev_ops gve_eth_dev_ops_dqo = { @@ -1325,6 +1354,7 @@ static const struct eth_dev_ops gve_eth_dev_ops_dqo = { .rss_hash_conf_get = gve_rss_hash_conf_get, .reta_update = gve_rss_reta_update, .reta_query = gve_rss_reta_query, + .read_clock = gve_read_clock, }; static int -- 2.54.0.563.g4f69b47b94-goog