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[54.197.127.237]) by mx.google.com with ESMTP id j65si52959qkj.244.2017.11.15.03.02.33; Wed, 15 Nov 2017 03:02:33 -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 9E4CE60762; Wed, 15 Nov 2017 11:02:33 +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 09897606B3; Wed, 15 Nov 2017 11:00:51 +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 A65456038B; Wed, 15 Nov 2017 11:00:29 +0000 (UTC) Received: from forward100p.mail.yandex.net (forward100p.mail.yandex.net [77.88.28.100]) by lists.linaro.org (Postfix) with ESMTPS id 711936068B for ; Wed, 15 Nov 2017 11:00:17 +0000 (UTC) Received: from mxback12g.mail.yandex.net (mxback12g.mail.yandex.net [IPv6:2a02:6b8:0:1472:2741:0:8b7:91]) by forward100p.mail.yandex.net (Yandex) with ESMTP id B50F05108D1D for ; Wed, 15 Nov 2017 14:00:15 +0300 (MSK) Received: from smtp3p.mail.yandex.net (smtp3p.mail.yandex.net [2a02:6b8:0:1472:2741:0:8b6:8]) by mxback12g.mail.yandex.net (nwsmtp/Yandex) with ESMTP id mxcNo9oSCi-0FmCYG6Q; Wed, 15 Nov 2017 14:00:15 +0300 Received: by smtp3p.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id 85x2bh5VFm-0FwOTHEU; Wed, 15 Nov 2017 14:00:15 +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 14:00:11 +0300 Message-Id: <1510743612-1242-4-git-send-email-odpbot@yandex.ru> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1510743612-1242-1-git-send-email-odpbot@yandex.ru> References: <1510743612-1242-1-git-send-email-odpbot@yandex.ru> Github-pr-num: 277 Subject: [lng-odp] [PATCH API-NEXT v5 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: 4f0291a1c2fcd19243f1ced69f46d9b2d58fedb7 **/ 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; /**