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GET /api/patches/57589/?format=api
{ "id": 57589, "url": "https://patches.dpdk.org/api/patches/57589/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/1565264843-1322-1-git-send-email-viacheslavo@mellanox.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": "<1565264843-1322-1-git-send-email-viacheslavo@mellanox.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1565264843-1322-1-git-send-email-viacheslavo@mellanox.com", "date": "2019-08-08T11:47:23", "name": "doc: inline data settings affect mlx5 Tx queue max size", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": true, "hash": "a3a1428b2b3e91cf5de5ece3b5c5b2343d302342", "submitter": { "id": 1102, "url": "https://patches.dpdk.org/api/people/1102/?format=api", "name": "Slava Ovsiienko", "email": "viacheslavo@mellanox.com" }, "delegate": { "id": 3268, "url": "https://patches.dpdk.org/api/users/3268/?format=api", "username": "rasland", "first_name": "Raslan", "last_name": "Darawsheh", "email": "rasland@nvidia.com" }, "mbox": "https://patches.dpdk.org/project/dpdk/patch/1565264843-1322-1-git-send-email-viacheslavo@mellanox.com/mbox/", "series": [ { "id": 5990, "url": "https://patches.dpdk.org/api/series/5990/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=5990", "date": "2019-08-08T11:47:23", "name": "doc: inline data settings affect mlx5 Tx queue max size", "version": 1, "mbox": "https://patches.dpdk.org/series/5990/mbox/" } ], "comments": "https://patches.dpdk.org/api/patches/57589/comments/", "check": "success", "checks": "https://patches.dpdk.org/api/patches/57589/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 406331BE0C;\n\tThu, 8 Aug 2019 13:47:32 +0200 (CEST)", "from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129])\n\tby dpdk.org (Postfix) with ESMTP id 4FE4B1BDEE\n\tfor <dev@dpdk.org>; Thu, 8 Aug 2019 13:47:31 +0200 (CEST)", "from Internal Mail-Server by MTLPINE2 (envelope-from\n\tviacheslavo@mellanox.com)\n\twith ESMTPS (AES256-SHA encrypted); 8 Aug 2019 14:47:27 +0300", "from pegasus12.mtr.labs.mlnx (pegasus12.mtr.labs.mlnx\n\t[10.210.17.40])\n\tby labmailer.mlnx (8.13.8/8.13.8) with ESMTP id x78BlQUG015346;\n\tThu, 8 Aug 2019 14:47:27 +0300", "from pegasus12.mtr.labs.mlnx (localhost [127.0.0.1])\n\tby pegasus12.mtr.labs.mlnx (8.14.7/8.14.7) with ESMTP id\n\tx78BlQbq001377; Thu, 8 Aug 2019 11:47:26 GMT", "(from viacheslavo@localhost)\n\tby pegasus12.mtr.labs.mlnx (8.14.7/8.14.7/Submit) id x78BlQkd001376; \n\tThu, 8 Aug 2019 11:47:26 GMT" ], "X-Authentication-Warning": "pegasus12.mtr.labs.mlnx: viacheslavo set sender to\n\tviacheslavo@mellanox.com using -f", "From": "Viacheslav Ovsiienko <viacheslavo@mellanox.com>", "To": "dev@dpdk.org", "Cc": "yskoh@mellanox.com, shahafs@mellanox.com", "Date": "Thu, 8 Aug 2019 11:47:23 +0000", "Message-Id": "<1565264843-1322-1-git-send-email-viacheslavo@mellanox.com>", "X-Mailer": "git-send-email 1.8.3.1", "Subject": "[dpdk-dev] [PATCH] doc: inline data settings affect mlx5 Tx queue\n\tmax size", "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": "Introduces the possible limitations on maximal Tx queue\nsize in descriptors if Tx inline data are enabled.\n\nSigned-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>\n---\n doc/guides/nics/mlx5.rst | 10 ++++++++++\n 1 file changed, 10 insertions(+)", "diff": "diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst\nindex d6082ac..72de5e6 100644\n--- a/doc/guides/nics/mlx5.rst\n+++ b/doc/guides/nics/mlx5.rst\n@@ -162,6 +162,12 @@ Limitations\n To receive IPv6 Multicast messages on VM, explicitly set the relevant\n MAC address using rte_eth_dev_mac_addr_add() API.\n \n+- the amount of descriptors in Tx queue may be limited by data inline settings.\n+ Inline data require the more descriptor building blocks and overall block\n+ amount may exceed the hardware supported limits. The application should\n+ reduce the requested Tx size or adjust data inline settings with\n+ ``txq_inline_max`` and ``txq_inline_mpw`` devarg keys.\n+\n - E-Switch decapsulation Flow:\n \n - can be applied to PF port only.\n@@ -400,6 +406,10 @@ Run-time configuration\n option should be used with care, as it may lower performance when back\n pressure is not expected.\n \n+ If inline data are enabled it may affect the maximal size of Tx queue in\n+ descriptors because the inline data increase the descriptor size and\n+ queue size limits supported by hardware may be exceeded.\n+\n - ``txq_inline_min`` parameter [int]\n \n Minimal amount of data to be inlined into WQE during Tx operations. NICs\n", "prefixes": [] }