From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id EF72DA2EEB for ; Sat, 14 Sep 2019 07:53:22 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 93BBB1EFA4; Sat, 14 Sep 2019 07:53:14 +0200 (CEST) Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by dpdk.org (Postfix) with ESMTP id 8B8741EFA0 for ; Sat, 14 Sep 2019 07:53:13 +0200 (CEST) Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id x8E5jwqQ019229; Fri, 13 Sep 2019 22:53:12 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=pfpt0818; bh=V7XaDed6IyLjLlZvGH2v3GVknvxAruG2bELk9CEA08c=; b=nqac8i+Tvk1hItxlKdwTSkZVTfLOefFvKJ/tXAdioBcM3Ev4HV1Pm9ajIeFbTBpDrf0k B8jD6ja6YsFX+RlZOpHX+/QPPD/iR72cayDETSnwoCyB9Y/K1QiBSMRMtiofwpA0rs+7 FNC6clfrGS3q85wmC3zFw/KESTuZ5w7iXTxyfHdmUUYjJRvazAi6bBxi6TjXmx+qKF9n wWWHLm7Fi3lHpgyEDqRB8WT5uR+Y2BdTaF4ZOXQg0vLgQ/OjOZADXoLup+V/uApz0L9q PKiGXqvw6EC7pkotc/EnKpdTMBi88jSXz18caJ/mmbqWRZD4zp88Xc5GGUfOswUNSML6 3A== Received: from sc-exch03.marvell.com ([199.233.58.183]) by mx0b-0016f401.pphosted.com with ESMTP id 2uytdfpypc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Fri, 13 Sep 2019 22:53:12 -0700 Received: from SC-EXCH03.marvell.com (10.93.176.83) by SC-EXCH03.marvell.com (10.93.176.83) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Fri, 13 Sep 2019 22:53:10 -0700 Received: from maili.marvell.com (10.93.176.43) by SC-EXCH03.marvell.com (10.93.176.83) with Microsoft SMTP Server id 15.0.1367.3 via Frontend Transport; Fri, 13 Sep 2019 22:53:10 -0700 Received: from hyd1vattunuru-dt.caveonetworks.com (unknown [10.29.52.72]) by maili.marvell.com (Postfix) with ESMTP id 2F7253F7041; Fri, 13 Sep 2019 22:53:07 -0700 (PDT) From: To: CC: , , , , Vamsi Attunuru Date: Sat, 14 Sep 2019 11:22:45 +0530 Message-ID: <20190914055247.3841-2-vattunuru@marvell.com> X-Mailer: git-send-email 2.8.4 In-Reply-To: <20190914055247.3841-1-vattunuru@marvell.com> References: <20190914055247.3841-1-vattunuru@marvell.com> MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.70,1.0.8 definitions=2019-09-14_02:2019-09-11,2019-09-14 signatures=0 Subject: [dpdk-dev] [PATCH v1 1/3] lib/ethdev: add ethdev op to get hash index 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" From: Vamsi Attunuru Some networking devices may use custom algos for computing hash indices and spread the packets accordingly. Patch adds a eth_dev op to get the hash index correspond to the given hash value received on the given port. Some of use cases where applications would compute hash index from hash value upfront and it can predict the packets come to a specific queue. Signed-off-by: Vamsi Attunuru --- lib/librte_ethdev/rte_ethdev.c | 13 +++++++++++++ lib/librte_ethdev/rte_ethdev.h | 20 ++++++++++++++++++++ lib/librte_ethdev/rte_ethdev_core.h | 5 +++++ lib/librte_ethdev/rte_ethdev_version.map | 3 +++ 4 files changed, 41 insertions(+) diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c index 17d183e..6a234d6 100644 --- a/lib/librte_ethdev/rte_ethdev.c +++ b/lib/librte_ethdev/rte_ethdev.c @@ -3022,6 +3022,19 @@ rte_eth_dev_rss_hash_conf_get(uint16_t port_id, } int +rte_eth_dev_rss_hash_index_get(uint16_t port_id, + uint32_t hash, uint32_t *hash_idx) +{ + struct rte_eth_dev *dev; + + RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV); + dev = &rte_eth_devices[port_id]; + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rss_hash_index_get, -ENOTSUP); + return eth_err(port_id, (*dev->dev_ops->rss_hash_index_get)(dev, hash, + hash_idx)); +} + +int rte_eth_dev_udp_tunnel_port_add(uint16_t port_id, struct rte_eth_udp_tunnel *udp_tunnel) { diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h index dc6596b..03ca1e9 100644 --- a/lib/librte_ethdev/rte_ethdev.h +++ b/lib/librte_ethdev/rte_ethdev.h @@ -3262,6 +3262,26 @@ rte_eth_dev_rss_hash_conf_get(uint16_t port_id, struct rte_eth_rss_conf *rss_conf); /** + * Get hash index of the given hash value that received in mbuf from this port. + * + * @param port_id + * The port identifier of the Ethernet device. + * @param hash + * The hash value used to compute hash_idx. + * @param hash_idx + * Where to store the computed hash_idx + * @return + * - (0) if successful. + * - (-ENODEV) if port identifier is invalid. + * - (-EIO) if device is removed. + * - (-ENOTSUP) if hardware doesn't support RSS. + */ +__rte_experimental +int +rte_eth_dev_rss_hash_index_get(uint16_t port_id, + uint32_t hash, uint32_t *hash_idx); + + /** * Add UDP tunneling port for a specific type of tunnel. * The packets with this UDP port will be identified as this type of tunnel. * Before enabling any offloading function for a tunnel, users can call this API diff --git a/lib/librte_ethdev/rte_ethdev_core.h b/lib/librte_ethdev/rte_ethdev_core.h index 2922d5b..aebfb5f 100644 --- a/lib/librte_ethdev/rte_ethdev_core.h +++ b/lib/librte_ethdev/rte_ethdev_core.h @@ -240,6 +240,10 @@ typedef int (*rss_hash_conf_get_t)(struct rte_eth_dev *dev, struct rte_eth_rss_conf *rss_conf); /**< @internal Get current RSS hash configuration of an Ethernet device */ +typedef int (*rss_hash_index_get_t)(struct rte_eth_dev *dev, + uint32_t hash, uint32_t *hash_idx); +/**< @internal Get RSS hash id of given hash value */ + typedef int (*eth_dev_led_on_t)(struct rte_eth_dev *dev); /**< @internal Turn on SW controllable LED on an Ethernet device */ @@ -471,6 +475,7 @@ struct eth_dev_ops { rss_hash_update_t rss_hash_update; /** Configure RSS hash protocols. */ rss_hash_conf_get_t rss_hash_conf_get; /** Get current RSS hash configuration. */ + rss_hash_index_get_t rss_hash_index_get; /** Get RSS hash idx. */ reta_update_t reta_update; /** Update redirection table. */ reta_query_t reta_query; /** Query redirection table. */ diff --git a/lib/librte_ethdev/rte_ethdev_version.map b/lib/librte_ethdev/rte_ethdev_version.map index 6df42a4..ea6d1bf 100644 --- a/lib/librte_ethdev/rte_ethdev_version.map +++ b/lib/librte_ethdev/rte_ethdev_version.map @@ -283,4 +283,7 @@ EXPERIMENTAL { # added in 19.08 rte_eth_read_clock; + + # added in 19.11 + rte_eth_dev_rss_hash_index_get; }; -- 2.8.4