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GET /api/patches/41380/?format=api
https://patches.dpdk.org/api/patches/41380/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/1529646843-45903-4-git-send-email-jiayu.hu@intel.com/", "project": { "id": 1, "url": "https://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<1529646843-45903-4-git-send-email-jiayu.hu@intel.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1529646843-45903-4-git-send-email-jiayu.hu@intel.com", "date": "2018-06-22T05:54:03", "name": "[v3,3/3] gso: update documents for UDP/IPv4 GSO", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "fdc977d1b7d83c13610f9f53e64af5861110685d", "submitter": { "id": 539, "url": "https://patches.dpdk.org/api/people/539/?format=api", "name": "Hu, Jiayu", "email": "jiayu.hu@intel.com" }, "delegate": { "id": 1, "url": "https://patches.dpdk.org/api/users/1/?format=api", "username": "tmonjalo", "first_name": "Thomas", "last_name": "Monjalon", "email": "thomas@monjalon.net" }, "mbox": "https://patches.dpdk.org/project/dpdk/patch/1529646843-45903-4-git-send-email-jiayu.hu@intel.com/mbox/", "series": [ { "id": 200, "url": "https://patches.dpdk.org/api/series/200/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=200", "date": "2018-06-22T05:54:00", "name": "Support UDP/IPv4 GSO", "version": 3, "mbox": "https://patches.dpdk.org/series/200/mbox/" } ], "comments": "https://patches.dpdk.org/api/patches/41380/comments/", "check": "success", "checks": "https://patches.dpdk.org/api/patches/41380/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@dpdk.org", "Delivered-To": "patchwork@dpdk.org", "Received": [ "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 0E04B1BB2E;\n\tFri, 22 Jun 2018 07:46:14 +0200 (CEST)", "from mga12.intel.com (mga12.intel.com [192.55.52.136])\n\tby dpdk.org (Postfix) with ESMTP id 378571BB20\n\tfor <dev@dpdk.org>; Fri, 22 Jun 2018 07:46:12 +0200 (CEST)", "from fmsmga001.fm.intel.com ([10.253.24.23])\n\tby fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t21 Jun 2018 22:46:11 -0700", "from dpdk15.sh.intel.com ([10.67.111.146])\n\tby fmsmga001.fm.intel.com with ESMTP; 21 Jun 2018 22:46:01 -0700" ], "X-Amp-Result": "SKIPPED(no attachment in message)", "X-Amp-File-Uploaded": "False", "X-ExtLoop1": "1", "X-IronPort-AV": "E=Sophos;i=\"5.51,255,1526367600\"; d=\"scan'208\";a=\"66269751\"", "From": "Jiayu Hu <jiayu.hu@intel.com>", "To": "dev@dpdk.org", "Cc": "xiao.w.wang@intel.com, konstantin.ananyev@intel.com,\n\tyuwei1.zhang@intel.com, bernard.iremonger@intel.com,\n\tthomas@monjalon.net, Jiayu Hu <jiayu.hu@intel.com>", "Date": "Fri, 22 Jun 2018 13:54:03 +0800", "Message-Id": "<1529646843-45903-4-git-send-email-jiayu.hu@intel.com>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1529646843-45903-1-git-send-email-jiayu.hu@intel.com>", "References": "<1529205194-87434-1-git-send-email-jiayu.hu@intel.com>\n\t<1529646843-45903-1-git-send-email-jiayu.hu@intel.com>", "Subject": "[dpdk-dev] [PATCH v3 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 <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "This patch updates the programmer guide and testpmd user guide for\nUDP/IPv4 GSO.\n\nSigned-off-by: Jiayu Hu <jiayu.hu@intel.com>\n---\n doc/guides/prog_guide/generic_segmentation_offload_lib.rst | 10 ++++++++++\n doc/guides/testpmd_app_ug/testpmd_funcs.rst | 7 +++++++\n 2 files changed, 17 insertions(+)", "diff": "diff --git a/doc/guides/prog_guide/generic_segmentation_offload_lib.rst b/doc/guides/prog_guide/generic_segmentation_offload_lib.rst\nindex 9959f0d..0cfc119 100644\n--- a/doc/guides/prog_guide/generic_segmentation_offload_lib.rst\n+++ b/doc/guides/prog_guide/generic_segmentation_offload_lib.rst\n@@ -43,6 +43,7 @@ Limitations\n #. Currently, the GSO library supports the following IPv4 packet types:\n \n - TCP\n+ - UDP\n - VxLAN\n - GRE\n \n@@ -146,6 +147,15 @@ TCP/IPv4 GSO\n TCP/IPv4 GSO supports segmentation of suitably large TCP/IPv4 packets, which\n may also contain an optional VLAN tag.\n \n+UDP/IPv4 GSO\n+~~~~~~~~~~~~\n+UDP/IPv4 GSO supports segmentation of suitably large UDP/IPv4 packets, which\n+may also contain an optional VLAN tag. UDP GSO is the same as IP fragmentation.\n+Specifically, UDP GSO treats the UDP header as a part of the payload and\n+does not modify it during segmentation. Therefore, after UDP GSO, only the\n+first output packet has the original UDP header, and others just have l2\n+and l3 headers.\n+\n VxLAN GSO\n ~~~~~~~~~\n VxLAN packets GSO supports segmentation of suitably large VxLAN packets,\ndiff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst\nindex 0d6fd50..6f2de24 100644\n--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst\n+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst\n@@ -1059,6 +1059,13 @@ By default, GSO is disabled for all ports.\n \n testpmd> csum set tcp hw <port_id>\n \n+ UDP GSO is the same as IP fragmentation, which treats the UDP header\n+ as the payload and does not modify it during segmentation. That is,\n+ after UDP GSO, only the first output fragment has the original UDP\n+ header. Therefore, users need to enable HW IP checksum calculation\n+ and SW UDP checksum calculation for GSO-enabled ports, if they want\n+ correct checksums for UDP/IPv4 packets.\n+\n set gso segsz\n ~~~~~~~~~~~~~\n \n", "prefixes": [ "v3", "3/3" ] }{ "id": 41380, "url": "