From patchwork Tue Dec 9 06:30:08 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tetsuya Mukawa X-Patchwork-Id: 1863 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 B5C4B806B; Tue, 9 Dec 2014 07:31:02 +0100 (CET) Received: from mail-pd0-f175.google.com (mail-pd0-f175.google.com [209.85.192.175]) by dpdk.org (Postfix) with ESMTP id C16E38058 for ; Tue, 9 Dec 2014 07:31:00 +0100 (CET) Received: by mail-pd0-f175.google.com with SMTP id y10so6717537pdj.20 for ; Mon, 08 Dec 2014 22:31:00 -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=ykEEdLb2sd+dcc1JwJ4wSrQNpE6kd4uLtWdX1Pid31o=; b=ebRgE8k4LMOSY4/aoi58pX4QfRhdvLDOFOppDR3hV465TycNAy0aqyPI/nmqty3fRL aYaQWXaJ+TwG8BSFFSlGQRvXRvt6sPV2aEY7h9T3/TLOSoi49G0JK1y41/0T9Ws5m0N0 ph2q4iiHV7O9DESAoR1bGQEosIP76D0F+esxWzHhfz+yDICzcj3Ewg1qCVjyDfHymC3Q AOjY8NHAjL5dA0LOQ+7QbqNP5CWdivsPbGJYnJnrHz6vgyu3r5r5KZMJHsdSwB4wdjPy srwWyW3S+YQ2aIc2D9f8gn5YzT8L8VbqflXCLJlsyo+HgvRTcqC1JBOvwTD2LG0PYvVT s/0w== X-Gm-Message-State: ALoCoQnIIKPm6orVYnDZHS+o0Kwkv7xt3lI1Bhu1dVSJ1gsr22+65MP/whA/uPMDcmrCzodibIau X-Received: by 10.66.194.195 with SMTP id hy3mr2156221pac.125.1418106660139; Mon, 08 Dec 2014 22:31:00 -0800 (PST) Received: from eris.hq.igel.co.jp (napt.igel.co.jp. [219.106.231.132]) by mx.google.com with ESMTPSA id f12sm403088pat.43.2014.12.08.22.30.57 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 08 Dec 2014 22:30:59 -0800 (PST) From: Tetsuya Mukawa To: dev@dpdk.org Date: Tue, 9 Dec 2014 15:30:08 +0900 Message-Id: <1418106629-22227-8-git-send-email-mukawa@igel.co.jp> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1418106629-22227-1-git-send-email-mukawa@igel.co.jp> References: <1416474399-16851-1-git-send-email-mukawa@igel.co.jp> <1418106629-22227-1-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 v3 07/28] 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 | 21 +++++++++++++++++++++ lib/librte_ether/rte_ethdev.h | 21 +++++++++++++++++++++ 2 files changed, 42 insertions(+) diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c index 51697e1..6a3700e 100644 --- a/lib/librte_ether/rte_ethdev.c +++ b/lib/librte_ether/rte_ethdev.c @@ -416,6 +416,27 @@ rte_eth_dev_count(void) return (nb_ports); } +void +rte_eth_dev_save(struct rte_eth_dev *devs) +{ + if (devs == NULL) + return; + + /* 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 b329e11..03c8850 100644 --- a/lib/librte_ether/rte_ethdev.h +++ b/lib/librte_ether/rte_ethdev.h @@ -1642,6 +1642,27 @@ 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 currents. 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