From patchwork Wed Oct 29 08:49:18 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tetsuya Mukawa X-Patchwork-Id: 1007 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 29D4D7FD6; Wed, 29 Oct 2014 09:41:31 +0100 (CET) Received: from mail-pa0-f41.google.com (mail-pa0-f41.google.com [209.85.220.41]) by dpdk.org (Postfix) with ESMTP id 84E3F7FCC for ; Wed, 29 Oct 2014 09:41:22 +0100 (CET) Received: by mail-pa0-f41.google.com with SMTP id rd3so2736431pab.14 for ; Wed, 29 Oct 2014 01:50:12 -0700 (PDT) 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=y250t/doyHsggupAeMoqZxgwIvbDraQqUzcwirz0uzc=; b=gN/oxmkiHJanueZe3HDW4fKao2/rYKOC43Vm4bx34fS6/Q1m2YdJ4Qnv1wqiZ4slYU 6Kgt2rKJM6P0dQMibJ4ep1FiTu8FjXskySg4pRF6u6g83DVqA+X7+0yEyvN7rXllCZu0 lWX8oqnXStBsaiWj1xmwC/tOyLDqDui+nKa14eqz5PSktjAd+7ea/tDTquiNkhoRyEfh +7TNv7ZFrETcXrhF12nJP+bQ9eH+Xt2lriKNYsJfHRoxsBe7gzfWNk1Ikr+oB06aplHJ Vssb/38Owt4FYOmepuHYEjW9ZWRs+8m+WDlixAv4vFOrd0S3zUeiE74tQQer3I52qxeY f3Pw== X-Gm-Message-State: ALoCoQnOkMwUo6fFx3ED4G2n5tUGG+hx34RBolWPd2529qxHnuIwY8suJ+WKjpkz8GSjWU99RWYf X-Received: by 10.70.41.13 with SMTP id b13mr9129633pdl.20.1414572612795; Wed, 29 Oct 2014 01:50:12 -0700 (PDT) Received: from eris.hq.igel.co.jp (napt.igel.co.jp. [219.106.231.132]) by mx.google.com with ESMTPSA id ky4sm3686872pbc.55.2014.10.29.01.50.10 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 29 Oct 2014 01:50:12 -0700 (PDT) From: Tetsuya Mukawa To: dev@dpdk.org Date: Wed, 29 Oct 2014 17:49:18 +0900 Message-Id: <1414572576-21371-8-git-send-email-mukawa@igel.co.jp> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1414572576-21371-1-git-send-email-mukawa@igel.co.jp> References: <1414572576-21371-1-git-send-email-mukawa@igel.co.jp> Cc: nakajima.yoshihiro@lab.ntt.co.jp, masutani.hitoshi@lab.ntt.co.jp Subject: [dpdk-dev] [RFC 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 752e3e4..d296285 100644 --- a/lib/librte_ether/rte_ethdev.c +++ b/lib/librte_ether/rte_ethdev.c @@ -404,6 +404,24 @@ 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 99cc8ce..106ba5c 100644 --- a/lib/librte_ether/rte_ethdev.h +++ b/lib/librte_ether/rte_ethdev.h @@ -1618,6 +1618,27 @@ 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