From patchwork Mon Jul 9 06:56:52 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Guo, Jia" X-Patchwork-Id: 42613 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 6E8CF1B1ED; Mon, 9 Jul 2018 08:59:22 +0200 (CEST) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id CB8991B1ED for ; Mon, 9 Jul 2018 08:59:20 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Jul 2018 23:59:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,329,1526367600"; d="scan'208";a="71124484" Received: from jeffguo-z170x-ud5.sh.intel.com (HELO localhost.localdomain) ([10.67.104.10]) by orsmga001.jf.intel.com with ESMTP; 08 Jul 2018 23:59:17 -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 Cc: jblunck@infradead.org, shreyansh.jain@nxp.com, dev@dpdk.org, jia.guo@intel.com, helin.zhang@intel.com Date: Mon, 9 Jul 2018 14:56:52 +0800 Message-Id: <1531119413-17298-3-git-send-email-jia.guo@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1531119413-17298-1-git-send-email-jia.guo@intel.com> References: <1530787185-5915-1-git-send-email-jia.guo@intel.com> <1531119413-17298-1-git-send-email-jia.guo@intel.com> Subject: [dpdk-dev] [PATCH v2 2/3] net/i40e: enable hotplug detect in i40e 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" This patch aim to enable hotplug detect in i40e pmd driver. Firstly it set the flags RTE_PCI_DRV_INTR_RMV in drv_flags to announce the hotplug ability, and then use rte_dev_event_callback_register to register the hotplug event callback to eal. When eal detect the hotplug event, it will call the callback to process it, if the event is hotplug remove, it will trigger the RTE_ETH_EVENT_INTR_RMV event into ethdev callback to let app process the hotplug for the ethdev. This is an example for other driver, that if any driver support hotplug feature could be use this way to enable hotplug detect. Signed-off-by: Jeff Guo --- v2->v1: no v1, add hotplug detect in ixgbe for new. --- drivers/net/i40e/i40e_ethdev.c | 46 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 45 insertions(+), 1 deletion(-) diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c index 13c5d32..ad4231f 100644 --- a/drivers/net/i40e/i40e_ethdev.c +++ b/drivers/net/i40e/i40e_ethdev.c @@ -688,7 +688,7 @@ static int eth_i40e_pci_remove(struct rte_pci_device *pci_dev) static struct rte_pci_driver rte_i40e_pmd = { .id_table = pci_id_i40e_map, .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC | - RTE_PCI_DRV_IOVA_AS_VA, + RTE_PCI_DRV_IOVA_AS_VA | RTE_PCI_DRV_INTR_RMV, .probe = eth_i40e_pci_probe, .remove = eth_i40e_pci_remove, }; @@ -1183,6 +1183,47 @@ i40e_aq_debug_write_global_register(struct i40e_hw *hw, return i40e_aq_debug_write_register(hw, reg_addr, reg_val, cmd_details); } +static void +eth_dev_event_callback(char *device_name, enum rte_dev_event_type type, + __rte_unused void *arg) +{ + uint32_t pid; + + 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: + PMD_DRV_LOG(INFO, "The device: %s has been removed!\n", + device_name); + + if (!device_name) + return; + + for (pid = 0; pid < RTE_MAX_ETHPORTS; pid++) { + if (rte_eth_devices[pid].device) { + if (!strcmp(device_name, + rte_eth_devices[pid].device->name)) { + _rte_eth_dev_callback_process( + &rte_eth_devices[pid], + RTE_ETH_EVENT_INTR_RMV, NULL); + continue; + } + } + } + break; + case RTE_DEV_EVENT_ADD: + RTE_LOG(INFO, EAL, "The device: %s has been added!\n", + device_name); + break; + default: + break; + } +} + static int eth_i40e_dev_init(struct rte_eth_dev *dev, void *init_params __rte_unused) { @@ -1442,6 +1483,9 @@ eth_i40e_dev_init(struct rte_eth_dev *dev, void *init_params __rte_unused) rte_intr_callback_register(intr_handle, i40e_dev_interrupt_handler, dev); + /* register the device event callback */ + rte_dev_event_callback_register(NULL, eth_dev_event_callback, NULL); + /* configure and enable device interrupt */ i40e_pf_config_irq0(hw, TRUE); i40e_pf_enable_irq0(hw);