From patchwork Wed Nov 15 14:00:20 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Github ODP bot X-Patchwork-Id: 118954 Delivered-To: patch@linaro.org Received: by 10.140.22.164 with SMTP id 33csp4358372qgn; Wed, 15 Nov 2017 06:08:33 -0800 (PST) X-Google-Smtp-Source: AGs4zMaIFUk4kUZs7uB8GK+d9KFacL41VyVfu/SEd9keA9KQixfUcbCSVlluGjDtriRXpZLZtAFz X-Received: by 10.200.25.177 with SMTP id u46mr18995502qtj.282.1510754913560; Wed, 15 Nov 2017 06:08:33 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1510754913; cv=none; d=google.com; s=arc-20160816; b=UnMk6RtCUlCPmW6XAE4Kiro2/Pqrrk3UKgs+XnFW30AqSawmXJLBwi0oONpUnpOKt2 kPj8xJomQx9B2n5S8FY1OiCJRQBbOv4Kqcwkz/wlVHtOdYCMUhJh9eEzU3TAgapzbjwb UvH6mi+SYy9sr0i4kUe3Yug5Px6D0sAj5PA3cTLylBdKqtxFxd4Peq42iNfGLDLUc51E okrgWBjLp0dCGv9sgFmTnLgxccfpIBIusaV4+NoDifIM+FGNdZlcSrbN115IJpHksMxp 0wC38IWmtBkIxQ5v8AMKSVWJX/Oa+22mtg/PhyURSrsxkeTnOVZTbY4Cj7ThDwltADhc B7eg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:subject:github-pr-num :references:in-reply-to:message-id:date:to:from:delivered-to :arc-authentication-results; bh=qeHo7VptpNDaBxqPX6yw13wjP2I/dtDbzxiZd3OSmAE=; b=gqr9PY8t7nM3itypBdNsEO5zyN6l04tGTCqW4dHUm1OVPNXLfQPWLmO8/GLikRiWji bxFtdK2WybK9wSpP6no+KJbqPqjnMYbVsVXg3ehHYNT/vfrk0XP8DlcGoUrh9IFbRKb+ Zze3ybFTVNqNGnCakHI5Esq9/QTRlZ6FCEgA2OwULv57Wqc/gF72NSPG2JU/Dr7YsFnq xqlM4OZRwn4avfVbxO3gNLIu4ZMDNendWqfBWI418QT7Wv4D3irEvqrx1az2fqKNijYx TJ1tFFhznSMQROeqomnb70tM3ANAtE6QKNmjopQuFR3ZK8+PbpBONn+zVRfe6do54cpZ 4HIw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of lng-odp-bounces@lists.linaro.org designates 54.197.127.237 as permitted sender) smtp.mailfrom=lng-odp-bounces@lists.linaro.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=yandex.ru Return-Path: Received: from lists.linaro.org (ec2-54-197-127-237.compute-1.amazonaws.com. [54.197.127.237]) by mx.google.com with ESMTP id q32si8154867qkq.242.2017.11.15.06.08.33; Wed, 15 Nov 2017 06:08:33 -0800 (PST) Received-SPF: pass (google.com: domain of lng-odp-bounces@lists.linaro.org designates 54.197.127.237 as permitted sender) client-ip=54.197.127.237; Authentication-Results: mx.google.com; spf=pass (google.com: domain of lng-odp-bounces@lists.linaro.org designates 54.197.127.237 as permitted sender) smtp.mailfrom=lng-odp-bounces@lists.linaro.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=yandex.ru Received: by lists.linaro.org (Postfix, from userid 109) id 462F560805; Wed, 15 Nov 2017 14:08:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on ip-10-142-244-252 X-Spam-Level: X-Spam-Status: No, score=-5.4 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2, URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from [127.0.0.1] (localhost [127.0.0.1]) by lists.linaro.org (Postfix) with ESMTP id 9B92060804; Wed, 15 Nov 2017 14:02:50 +0000 (UTC) X-Original-To: lng-odp@lists.linaro.org Delivered-To: lng-odp@lists.linaro.org Received: by lists.linaro.org (Postfix, from userid 109) id 8770B606B3; Wed, 15 Nov 2017 14:02:33 +0000 (UTC) Received: from forward105o.mail.yandex.net (forward105o.mail.yandex.net [37.140.190.183]) by lists.linaro.org (Postfix) with ESMTPS id E952760690 for ; Wed, 15 Nov 2017 14:00:27 +0000 (UTC) Received: from mxback13j.mail.yandex.net (mxback13j.mail.yandex.net [IPv6:2a02:6b8:0:1619::88]) by forward105o.mail.yandex.net (Yandex) with ESMTP id 1A6BE44452A2 for ; Wed, 15 Nov 2017 17:00:26 +0300 (MSK) Received: from smtp3o.mail.yandex.net (smtp3o.mail.yandex.net [2a02:6b8:0:1a2d::27]) by mxback13j.mail.yandex.net (nwsmtp/Yandex) with ESMTP id 1G2f3SBHDf-0POSTIZ8; Wed, 15 Nov 2017 17:00:25 +0300 Received: by smtp3o.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id 1e1o95Ghl7-0Ovul9Ob; Wed, 15 Nov 2017 17:00:24 +0300 (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (Client certificate not present) From: Github ODP bot To: lng-odp@lists.linaro.org Date: Wed, 15 Nov 2017 17:00:20 +0300 Message-Id: <1510754421-26137-4-git-send-email-odpbot@yandex.ru> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1510754421-26137-1-git-send-email-odpbot@yandex.ru> References: <1510754421-26137-1-git-send-email-odpbot@yandex.ru> Github-pr-num: 277 Subject: [lng-odp] [PATCH API-NEXT v6 3/4] api: classification: add random early detection and back pressure X-BeenThere: lng-odp@lists.linaro.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: "The OpenDataPlane \(ODP\) List" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: lng-odp-bounces@lists.linaro.org Sender: "lng-odp" From: Balasubramanian Manoharan Adds random early detection and Back pressure feature to CoS Signed-off-by: Balasubramanian Manoharan --- /** Email created from pull request 277 (bala-manoharan:RED) ** https://github.com/Linaro/odp/pull/277 ** Patch: https://github.com/Linaro/odp/pull/277.patch ** Base sha: ba93e355ddf151215aa18b59cbfca08fe175fe65 ** Merge commit sha: 1c3ff9a77c88059189428342ddcb563eaee2f74c **/ include/odp/api/spec/classification.h | 67 +++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) diff --git a/include/odp/api/spec/classification.h b/include/odp/api/spec/classification.h index 0c4a95c5f..ce7a4eae2 100644 --- a/include/odp/api/spec/classification.h +++ b/include/odp/api/spec/classification.h @@ -20,6 +20,7 @@ extern "C" { #include #include +#include /** @defgroup odp_classification ODP CLASSIFICATION * Classification operations. * @{ @@ -107,6 +108,54 @@ typedef union odp_cls_pmr_terms_t { uint64_t all_bits; } odp_cls_pmr_terms_t; +/** Random Early Detection (RED) + * Random Early Detection is enabled to initiate a drop probability for the + * incoming packet when the packets in the queue/pool reaches between the + * specified threshold. RED is enabled when 'red_enable' boolean is true and + * the resource limit is equal to or greater than the minimum threshold value. + * When RED is enabled for a particular flow then further incoming packets are + * assigned a drop probability based on the size of the pool/queue. + * Drop probability becomes zero when resource in the pool/queue is less than + * or equal to minimum threshold and it becomes 100% when resource in the + * pool/queue is greater than or equal to maximum threshold. + * RED is logically configured in the CoS and could be implemented in either + * pool or queue linked to the CoS depending on platform capabilities. + * Application should make sure not to link multiple CoS with different RED or + * BP configuration to the same queue or pool. + */ +typedef struct odp_red_param_t { + /** A boolean to enable RED + * When true, RED is enabled and configured with RED parameters. + * Otherwise, RED parameters are ignored. */ + odp_bool_t red_enable; + + /** Threshold parameters for RED + * RED is enabled when the resource limit is equal to or greater than + * the minimum threshold value and is disabled otherwise + */ + odp_threshold_t red_threshold; +} odp_red_param_t; + +/** Back pressure (BP) + * When back pressure is enabled for a particular flow, the HW can send + * back pressure information to the remote peer indicating a network congestion. + */ + +typedef struct odp_bp_param_t { + /** A boolean to enable Back pressure + * When true, back pressure is enabled and configured with the BP + * parameters. Otherwise BP parameters are ignored. + */ + odp_bool_t bp_enable; + + /** Threshold value for back pressure. + * BP is enabled when queue or pool value is equal to or greater + * than the max backpressure threshold. + * Min threshold parameters are ignored for BP configuration. + */ + odp_threshold_t bp_threshold; +} odp_bp_param_t; + /** * Classification capabilities * This capability structure defines system level classification capability @@ -135,6 +184,18 @@ typedef struct odp_cls_capability_t { /** A Boolean to denote support of PMR range */ odp_bool_t pmr_range_supported; + + /** Support for Random Early Detection */ + odp_support_t random_early_detection; + + /** Supported threshold type for RED */ + odp_threshold_types_t threshold_red; + + /** Support for Back Pressure to the remote peer */ + odp_support_t back_pressure; + + /** Supported threshold type for BP */ + odp_threshold_types_t threshold_bp; } odp_cls_capability_t; /** @@ -206,6 +267,12 @@ typedef struct odp_cls_cos_param { /** Drop policy associated with CoS */ odp_cls_drop_t drop_policy; + + /** Random Early Detection configuration */ + odp_red_param_t red; + + /** Back Pressure configuration */ + odp_bp_param_t bp; } odp_cls_cos_param_t; /**