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 9FAF4CD4846 for ; Tue, 12 May 2026 00:54:34 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 5688640693; Tue, 12 May 2026 02:54:14 +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 1A9BB40665 for ; Tue, 12 May 2026 02:54:12 +0200 (CEST) Received: by mail-qt1-f202.google.com with SMTP id d75a77b69052e-514ae0e3ad6so57404411cf.0 for ; Mon, 11 May 2026 17:54:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1778547251; x=1779152051; 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=X/Zwctbk0tuH7lyn0md6UO3wTBllP3rc+U24AQp+GkQ=; b=v50KrWX87vbXfgmI4pMyw3baBx1/rTzgOZZEZHL3e6V7Uflh6SCvTXY9rv45HFPMI/ fR5Jcn95murOdbKe3dc9nMDvRP724T7QIHvjV1NgpPxLC9PxeY+PZ6h0VsJ/SDc73gSr /a4NTv51pgATbM0rjIEtIOaXIOUjwFdV9JzvXkpoi+iqEf2zFma1GUSUEM/wenKOEQEY r50Nmvd/kooixaXYnZPcS3szY4jPsZo+QVy2+ygvZuof/P/Gl66II6SgKQ8OnrqrQgGX JDJtqS7sGg7C2p0zwqAUjD+wfPd2mzkAW+ndTNYXI2XCH9/j91jGCyw+JKK/XewvawKx S+kQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778547251; x=1779152051; 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=X/Zwctbk0tuH7lyn0md6UO3wTBllP3rc+U24AQp+GkQ=; b=F2fMdbQvGV0kHwuY4l7En1D37q6uN2pINsSZi/cK2ygvhh/cFOQWAt6fJmWKTGUqi6 PLDZPNxROxt+c8MeldSk3VhIWM7cn74nR4G8P6k44tnN8Ncj1SnmRcXeOoPgAQa7fD3t +8qXgQ1DdX958/qt1Mvx8MHdoo1IelB1QrhwWiwjWqvEG3gRKJb0QWDkr0fVi70xgxh0 svt1cZTvbwhpXIubsS6qkQSIf44WWHP+/A6shmvdwrP+OotV7Ej7nxUizFxxTKhuQRDs 7zzneKvtS5Z2MkJnhzXFPngu86782SbonYBYpBC68qWXA0kUbbYxUJz8Nl2ltd2R2Dc/ 7ksw== X-Gm-Message-State: AOJu0YyXPPSahrnuPeyKUPlaQwYjzKpWI8o2jnok5Te/Av36DKdn/J9u Jpr5BtOtO91UsKcsj8Ax8mLILpREJaLQQwCw+LILX6XvhaSGzaxZIudtCO/nW6CT6e9BuMMHD43 UUVP2pw== X-Received: from qtbjz13.prod.google.com ([2002:a05:622a:81cd:b0:508:fe4c:e5ba]) (user=blasko job=prod-delivery.src-stubby-dispatcher) by 2002:a05:622a:5c9:b0:50f:340f:ff35 with SMTP id d75a77b69052e-514ceff82d5mr23414071cf.26.1778547251120; Mon, 11 May 2026 17:54:11 -0700 (PDT) Date: Tue, 12 May 2026 00:53:52 +0000 In-Reply-To: <20260512005404.946979-1-blasko@google.com> Mime-Version: 1.0 References: <20260512005404.946979-1-blasko@google.com> X-Mailer: git-send-email 2.54.0.563.g4f69b47b94-goog Message-ID: <20260512005404.946979-6-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 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