From patchwork Thu Nov 20 09:06:21 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tetsuya Mukawa X-Patchwork-Id: 1370 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 73B707FC6; Thu, 20 Nov 2014 09:57:06 +0100 (CET) Received: from mail-pa0-f52.google.com (mail-pa0-f52.google.com [209.85.220.52]) by dpdk.org (Postfix) with ESMTP id F23D07F7D for ; Thu, 20 Nov 2014 09:57:03 +0100 (CET) Received: by mail-pa0-f52.google.com with SMTP id eu11so2163374pac.39 for ; Thu, 20 Nov 2014 01:07:32 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=9DXMXtbmpDgHkOOc22VCA+tAP/juW95QSTLeqoOhPdk=; b=CI0FdJ+fyPEs8pLEi30zqE4y1svobQAcibDjRcxsc95a3CWHYj6N+ff2Di+jXspTJr lNqrTzPD2rN6JyRds5yvbkIrr0x9HVhIZORQ/6orXtSBZoQRvX5RSBPxYXN+hLHEhfVz 4/WnaZTBx++Mlpjs5/RPQLxgImtToqo1eqV4B2fRodV8kBrqNKAxrfphvv4fCCxZGjbb gNGCiIF7XqCS6mcEiMsw8sxdO3eg1nuldDhHotCBnzrsEoqH6UU988uCjihlbBDNij/p MnZtHw6LBXhGyxb0Ug4WQkt9Ktzz0Zfu+CGoIU9vIRMw7Gi8vCUJV4gC3y6IB5i+cQFj eHsg== X-Gm-Message-State: ALoCoQk9g+F4P0Nj8k4oxy7L4a81PcmNftU0grayIEeyM879IXd2QJEDbWNtsnGu+HQtK2w3ijNO X-Received: by 10.70.140.225 with SMTP id rj1mr22375337pdb.48.1416474452777; Thu, 20 Nov 2014 01:07:32 -0800 (PST) Received: from localhost.localdomain (napt.igel.co.jp. [219.106.231.132]) by mx.google.com with ESMTPSA id a6sm1432407pbu.64.2014.11.20.01.07.30 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 20 Nov 2014 01:07:32 -0800 (PST) From: Tetsuya Mukawa To: dev@dpdk.org Date: Thu, 20 Nov 2014 18:06:21 +0900 Message-Id: <1416474399-16851-8-git-send-email-mukawa@igel.co.jp> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1416474399-16851-1-git-send-email-mukawa@igel.co.jp> References: <1414572576-21371-1-git-send-email-mukawa@igel.co.jp> <1416474399-16851-1-git-send-email-mukawa@igel.co.jp> Cc: nakajima.yoshihiro@lab.ntt.co.jp, menrigh@brocade.com, masutani.hitoshi@lab.ntt.co.jp Subject: [dpdk-dev] [PATCH 07/25] ethdev: Add functions to know which port is attached or detached X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The patch adds rte_eth_dev_save() and rte_eth_dev_get_changed_port(). rte_eth_dev_save() is used for saving current rte_eth_dev structures. rte_eth_dev_get_changed_port() receives the rte_eth_dev structures, then compare these with current values to know which port is actually attached or detached. Signed-off-by: Tetsuya Mukawa --- lib/librte_ether/rte_ethdev.c | 18 ++++++++++++++++++ lib/librte_ether/rte_ethdev.h | 21 +++++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c index c9f82d9..5e1b6b9 100644 --- a/lib/librte_ether/rte_ethdev.c +++ b/lib/librte_ether/rte_ethdev.c @@ -402,6 +402,24 @@ rte_eth_dev_count(void) return (nb_ports); } +void +rte_eth_dev_save(struct rte_eth_dev *devs) +{ + /* save current rte_eth_devices */ + memcpy(devs, rte_eth_devices, + sizeof(struct rte_eth_dev) * RTE_MAX_ETHPORTS); +} + +int +rte_eth_dev_get_changed_port(struct rte_eth_dev *devs, uint8_t *port_id) +{ + /* check which port was attached or detached */ + for (*port_id = 0; *port_id < RTE_MAX_ETHPORTS; (*port_id)++, devs++) + if (rte_eth_devices[*port_id].attached ^ devs->attached) + return 0; + return 1; +} + static int rte_eth_dev_rx_queue_config(struct rte_eth_dev *dev, uint16_t nb_queues) { diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h index 558d4d3..683b79c 100644 --- a/lib/librte_ether/rte_ethdev.h +++ b/lib/librte_ether/rte_ethdev.h @@ -1638,6 +1638,27 @@ extern struct rte_eth_dev rte_eth_devices[]; extern uint8_t rte_eth_dev_count(void); /** + * Function for internal use by port hotplug functions. + * Copies current ethdev structures to the specified pointer. + * + * @param devs The pointer to the ethdev structures + */ +extern void rte_eth_dev_save(struct rte_eth_dev *devs); + +/** + * Function for internal use by port hotplug functions. + * Compare the specified ethdev structures with currrents. Then + * if there is a port which status is changed, fill the specified pointer + * with the port id of that port. + * @param devs The pointer to the ethdev structures + * @param port_id The pointer to the port id + * @return + * - 0 on success, negative on error + */ +extern int rte_eth_dev_get_changed_port( + struct rte_eth_dev *devs, uint8_t *port_id); + +/** * Function for internal use by dummy drivers primarily, e.g. ring-based * driver. * Allocates a new ethdev slot for an ethernet device and returns the pointer