From patchwork Sun Jun 17 03:13:14 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Hu, Jiayu" X-Patchwork-Id: 41222 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 63ED51B4E1; Sun, 17 Jun 2018 05:05:38 +0200 (CEST) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id 24B0D1B3B6 for ; Sun, 17 Jun 2018 05:05:28 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Jun 2018 20:05:28 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,233,1526367600"; d="scan'208";a="49937441" Received: from dpdk15.sh.intel.com ([10.67.111.146]) by orsmga008.jf.intel.com with ESMTP; 16 Jun 2018 20:05:27 -0700 From: Jiayu Hu To: dev@dpdk.org Cc: konstantin.ananyev@intel.com, yuwei1.zhang@intel.com, bernard.iremonger@intel.com, Jiayu Hu Date: Sun, 17 Jun 2018 11:13:14 +0800 Message-Id: <1529205194-87434-4-git-send-email-jiayu.hu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1529205194-87434-1-git-send-email-jiayu.hu@intel.com> References: <1527579670-91026-1-git-send-email-jiayu.hu@intel.com> <1529205194-87434-1-git-send-email-jiayu.hu@intel.com> Subject: [dpdk-dev] [PATCH v2 3/3] gso: update documents for UDP/IPv4 GSO X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This patch updates the programmer guide and testpmd user guide for UDP/IPv4 GSO. Signed-off-by: Jiayu Hu --- doc/guides/prog_guide/generic_segmentation_offload_lib.rst | 6 ++++++ doc/guides/testpmd_app_ug/testpmd_funcs.rst | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/doc/guides/prog_guide/generic_segmentation_offload_lib.rst b/doc/guides/prog_guide/generic_segmentation_offload_lib.rst index 9959f0d..cf700c5 100644 --- a/doc/guides/prog_guide/generic_segmentation_offload_lib.rst +++ b/doc/guides/prog_guide/generic_segmentation_offload_lib.rst @@ -43,6 +43,7 @@ Limitations #. Currently, the GSO library supports the following IPv4 packet types: - TCP + - UDP - VxLAN - GRE @@ -146,6 +147,11 @@ TCP/IPv4 GSO TCP/IPv4 GSO supports segmentation of suitably large TCP/IPv4 packets, which may also contain an optional VLAN tag. +UDP/IPv4 GSO +~~~~~~~~~~~~ +UDP/IPv4 GSO supports segmentation of suitably large UDP/IPv4 packets, which +may also contain an optional VLAN tag. + VxLAN GSO ~~~~~~~~~ VxLAN packets GSO supports segmentation of suitably large VxLAN packets, diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst index 0d6fd50..1a9dcd8 100644 --- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst +++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst @@ -1059,6 +1059,12 @@ By default, GSO is disabled for all ports. testpmd> csum set tcp hw + UDP GSO is the same as IP fragmentation, which treats the UDP header + as the payload and does not modify it during segmentation. That is, + after UDP GSO, only the first output fragment has the original UDP + header. Therefore, users just need to enable HW IPv4 checksum + calculation for GSO-enabled ports, when input packets are UDP/IPv4. + set gso segsz ~~~~~~~~~~~~~