From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 86EE01B1CC for ; Mon, 9 Jul 2018 13:48:41 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Jul 2018 04:48:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,330,1526367600"; d="scan'208";a="65345347" Received: from jeffguo-z170x-ud5.sh.intel.com (HELO localhost.localdomain) ([10.67.104.10]) by fmsmga002.fm.intel.com with ESMTP; 09 Jul 2018 04:48:37 -0700 From: Jeff Guo To: stephen@networkplumber.org, bruce.richardson@intel.com, ferruh.yigit@intel.com, konstantin.ananyev@intel.com, gaetan.rivet@6wind.com, jingjing.wu@intel.com, thomas@monjalon.net, motih@mellanox.com, matan@mellanox.com, harry.van.haaren@intel.com, qi.z.zhang@intel.com, shaopeng.he@intel.com, bernard.iremonger@intel.com, arybchenko@solarflare.com, wenzhuo.lu@intel.com Cc: jblunck@infradead.org, shreyansh.jain@nxp.com, dev@dpdk.org, jia.guo@intel.com, helin.zhang@intel.com Date: Mon, 9 Jul 2018 19:46:14 +0800 Message-Id: <1531136777-9815-2-git-send-email-jia.guo@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1531136777-9815-1-git-send-email-jia.guo@intel.com> References: <1530787185-5915-1-git-send-email-jia.guo@intel.com> <1531136777-9815-1-git-send-email-jia.guo@intel.com> Subject: [dpdk-dev] [PATCH v3 1/4] ethdev: Add eal device event callback 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: , X-List-Received-Date: Mon, 09 Jul 2018 11:48:42 -0000 Implement a eal device event callback "rte_eth_dev_event_callback" in ethdev, it could let pmd driver have chance to manage the eal device event, such as process hotplug event. Signed-off-by: Jeff Guo --- v3->v2: add new callback in ethdev --- doc/guides/rel_notes/release_18_08.rst | 8 ++++++++ lib/librte_ethdev/rte_ethdev.c | 37 ++++++++++++++++++++++++++++++++++ lib/librte_ethdev/rte_ethdev_driver.h | 20 ++++++++++++++++++ 3 files changed, 65 insertions(+) diff --git a/doc/guides/rel_notes/release_18_08.rst b/doc/guides/rel_notes/release_18_08.rst index bc01242..2326058 100644 --- a/doc/guides/rel_notes/release_18_08.rst +++ b/doc/guides/rel_notes/release_18_08.rst @@ -46,6 +46,14 @@ New Features Flow API support has been added to CXGBE Poll Mode Driver to offload flows to Chelsio T5/T6 NICs. +* **Added eal device event callback in ethdev for hotplug.** + + Implement a eal device event callback in ethdev, it could let pmd driver + have chance to manage the eal device event, such as process hotplug event. + + * ``rte_eth_dev_event_callback`` for driver use to register it and process + eal device event. + API Changes ----------- diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c index a9977df..36f218a 100644 --- a/lib/librte_ethdev/rte_ethdev.c +++ b/lib/librte_ethdev/rte_ethdev.c @@ -4518,6 +4518,43 @@ rte_eth_devargs_parse(const char *dargs, struct rte_eth_devargs *eth_da) return result; } +void __rte_experimental +rte_eth_dev_event_callback(char *device_name, enum rte_dev_event_type type, + void *arg) +{ + struct rte_eth_dev *eth_dev = (struct rte_eth_dev *)arg; + + if (type >= RTE_DEV_EVENT_MAX) { + fprintf(stderr, "%s called upon invalid event %d\n", + __func__, type); + fflush(stderr); + } + + switch (type) { + case RTE_DEV_EVENT_REMOVE: + ethdev_log(INFO, "The device: %s has been removed!\n", + device_name); + + if (!device_name || !eth_dev) + return; + + if (!(eth_dev->data->dev_flags & RTE_ETH_EVENT_INTR_RMV)) + return; + + if (!strcmp(device_name, eth_dev->device->name)) + _rte_eth_dev_callback_process(eth_dev, + RTE_ETH_EVENT_INTR_RMV, + NULL); + break; + case RTE_DEV_EVENT_ADD: + ethdev_log(INFO, "The device: %s has been added!\n", + device_name); + break; + default: + break; + } +} + RTE_INIT(ethdev_init_log); static void ethdev_init_log(void) diff --git a/lib/librte_ethdev/rte_ethdev_driver.h b/lib/librte_ethdev/rte_ethdev_driver.h index c9c825e..fed5afa 100644 --- a/lib/librte_ethdev/rte_ethdev_driver.h +++ b/lib/librte_ethdev/rte_ethdev_driver.h @@ -82,6 +82,26 @@ int rte_eth_dev_release_port(struct rte_eth_dev *eth_dev); void _rte_eth_dev_reset(struct rte_eth_dev *dev); /** + * @warning + * @b EXPERIMENTAL: this API may change without prior notice. + * + * Implement a rte eth eal device event callbacks for the specific device. + * + * @param device_name + * Pointer to the name of the rte device. + * @param event + * Eal device event type. + * @param ret_param + * To pass data back to user application. + * + * @return + * void + */ +void __rte_experimental +rte_eth_dev_event_callback(char *device_name, + enum rte_dev_event_type event, void *cb_arg); + +/** * @internal Executes all the user application registered callbacks for * the specific device. It is for DPDK internal user only. User * application should not call it directly. -- 2.7.4