From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id ECDEF469DD; Tue, 17 Jun 2025 10:24:43 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 78B7740E21; Tue, 17 Jun 2025 10:24:23 +0200 (CEST) Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) by mails.dpdk.org (Postfix) with ESMTP id 543A740DC9 for ; Tue, 17 Jun 2025 10:24:19 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1750148660; x=1781684660; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ABhDCLdvJaw6hcbwZC8nL3RbP4noP4nZiMy0UMGDCzQ=; b=ZXAxeMGVjk9IR+xJc3I7FBAb4WeY/IHeN4dG2p3iGTEiUtKnGV3PzhAl v5ITGQc+iqRP33R9qKfhguRau8T8mYcUivuIyFaFhCrmf7D7kvvXDjYr5 m+XICjTzmZHIEX3N5h8BkVLHauSeec2SDthA7jdAWmXTEHRdqtucIDVC5 O1NWE9HgZVwm7IYD2XILD4x+0TwxhHTAUm/pweVspjbdntiesqbx9i6dq pWeuW0wHnhsrjBN/VkOWrzeFuMJOehBzor+kikpmrfo+BGZn2YnFt4J96 oO7w0B2sjptanQa9w/2xKvzGadragheYEeDX6zQaUPLZfwkSkT3OurGkQ Q==; X-CSE-ConnectionGUID: ADHp/0WrSQy5q8MnxmBQgA== X-CSE-MsgGUID: f87aUXW/Sua8znzEbHipAw== X-IronPort-AV: E=McAfee;i="6800,10657,11465"; a="52449731" X-IronPort-AV: E=Sophos;i="6.16,242,1744095600"; d="scan'208";a="52449731" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jun 2025 01:24:19 -0700 X-CSE-ConnectionGUID: S5ACD5GeRkmfsDBiz5IOFg== X-CSE-MsgGUID: m0H+TkxTRtmgYj0iwMbrSg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,242,1744095600"; d="scan'208";a="148563843" Received: from unknown (HELO sprmax9..) ([10.138.182.122]) by fmviesa006.fm.intel.com with ESMTP; 17 Jun 2025 01:24:17 -0700 From: Soumyadeep Hore To: dev@dpdk.org, bruce.richardson@intel.com Cc: aman.deep.singh@intel.com, manoj.kumar.subbarao@intel.com Subject: [PATCH v5 4/4] doc: announce TxPP support for E830 adapters Date: Tue, 17 Jun 2025 00:14:29 +0000 Message-ID: <20250617001429.551262-5-soumyadeep.hore@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250617001429.551262-1-soumyadeep.hore@intel.com> References: <20250610131159.495566-2-soumyadeep.hore@intel.com> <20250617001429.551262-1-soumyadeep.hore@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 E830 adapters currently support Tx Time based queues. Signed-off-by: Soumyadeep Hore --- doc/guides/nics/ice.rst | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/doc/guides/nics/ice.rst b/doc/guides/nics/ice.rst index 77985ae5a2..e7d1fb2e1b 100644 --- a/doc/guides/nics/ice.rst +++ b/doc/guides/nics/ice.rst @@ -415,6 +415,31 @@ and add the ``--force-max-simd-bitwidth=64`` startup parameter to disable vector examples/dpdk-ptpclient -c f -n 3 -a 0000:ec:00.1 --force-max-simd-bitwidth=64 -- -T 1 -p 0x1 -c 1 +Tx Packet Pacing +~~~~~~~~~~~~~~~~ + +In order to deliver the timestamp with every packet, a special type of Tx Host Queue is +used, the TS Queue. This feature is currently supported only in E830 adapters. + +The tx_offload ``RTE_ETH_TX_OFFLOAD_SEND_ON_TIMESTAMP`` is used to enable the feature. +In order to deliver timestamps internally ``set txtimes`` is used where inter burst +and intra burst time interval in nsecs is provided. +For example: + +.. code-block:: console + + dpdk-testpmd -a 0000:31:00.0 -c f -n 4 -- -i --tx-offloads=0x200000 + set fwd txonly + set txtimes , + start + +Based on the offload Tx Time Queue will be enabled during ice_tx_queue_setup() +only for E830 adapters. The initial time should be fetched using +rte_eth_read_clock(). Further the timestamps should be calculated based on the +inter_burst and intra_burst times, then storing it into proper format as to be +placed in packet header. The timestamps should then be copied to packet mbufs +and packet header length should be adjusted accordingly. + Generic Flow Support ~~~~~~~~~~~~~~~~~~~~ -- 2.43.0