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 ABFD55F72 for ; Thu, 4 Oct 2018 08:28:09 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Oct 2018 23:28:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,338,1534834800"; d="scan'208";a="85636071" Received: from jeffguo-s2600wt2.sh.intel.com (HELO localhost.localdomain) ([10.67.110.10]) by FMSMGA003.fm.intel.com with ESMTP; 03 Oct 2018 23:27:46 -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, anatoly.burakov@intel.com, jerin.jacob@caviumnetworks.com Cc: jblunck@infradead.org, shreyansh.jain@nxp.com, dev@dpdk.org, jia.guo@intel.com, helin.zhang@intel.com Date: Thu, 4 Oct 2018 14:30:59 +0800 Message-Id: <1538634659-91335-8-git-send-email-jia.guo@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1538634659-91335-1-git-send-email-jia.guo@intel.com> References: <1498711073-42917-1-git-send-email-jia.guo@intel.com> <1538634659-91335-1-git-send-email-jia.guo@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v13 7/7] app/testpmd: use hotplug failure handler 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: Thu, 04 Oct 2018 06:28:10 -0000 This patch use testpmd for example, to show how an app smoothly handle failure when device be hot-unplug. Except that app should enabled the device event monitor and register the hotplug event’s callback, it also need enable hotplug handle mechanism before running. Once app detect the removal event, the hot-unplug callback would be called. It will first stop the packet forwarding, then stop the port, close the port, and finally detach the port to clean the device and release the resources. Signed-off-by: Jeff Guo --- v13->v12: delete needless helper in app. --- app/test-pmd/testpmd.c | 86 +++++++++++++++++++++++--------------------------- 1 file changed, 40 insertions(+), 46 deletions(-) diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c index 001f0e5..f3f8e44 100644 --- a/app/test-pmd/testpmd.c +++ b/app/test-pmd/testpmd.c @@ -434,9 +434,6 @@ static int eth_event_callback(portid_t port_id, static void eth_dev_event_callback(char *device_name, enum rte_dev_event_type type, void *param); -static int eth_dev_event_callback_register(void); -static int eth_dev_event_callback_unregister(void); - /* * Check if all the ports are started. @@ -1954,39 +1951,6 @@ reset_port(portid_t pid) printf("Done\n"); } -static int -eth_dev_event_callback_register(void) -{ - int ret; - - /* register the device event callback */ - ret = rte_dev_event_callback_register(NULL, - eth_dev_event_callback, NULL); - if (ret) { - printf("Failed to register device event callback\n"); - return -1; - } - - return 0; -} - - -static int -eth_dev_event_callback_unregister(void) -{ - int ret; - - /* unregister the device event callback */ - ret = rte_dev_event_callback_unregister(NULL, - eth_dev_event_callback, NULL); - if (ret < 0) { - printf("Failed to unregister device event callback\n"); - return -1; - } - - return 0; -} - void attach_port(char *identifier) { @@ -2093,14 +2057,25 @@ pmd_test_exit(void) if (hot_plug) { ret = rte_dev_event_monitor_stop(); - if (ret) + if (ret) { RTE_LOG(ERR, EAL, "fail to stop device event monitor."); + return; + } - ret = eth_dev_event_callback_unregister(); - if (ret) + ret = rte_dev_event_callback_unregister(NULL, + eth_dev_event_callback, NULL); + if (ret < 0) { + printf("fail to unregister device event callback.\n"); + return; + } + + ret = rte_dev_hotplug_handle_disable(); + if (ret) { RTE_LOG(ERR, EAL, - "fail to unregister all event callbacks."); + "fail to disable hotplug handling.\n"); + return; + } } printf("\nBye...\n"); @@ -2244,6 +2219,9 @@ static void eth_dev_event_callback(char *device_name, enum rte_dev_event_type type, __rte_unused void *arg) { + uint16_t port_id; + int ret; + if (type >= RTE_DEV_EVENT_MAX) { fprintf(stderr, "%s called upon invalid event %d\n", __func__, type); @@ -2254,9 +2232,13 @@ eth_dev_event_callback(char *device_name, enum rte_dev_event_type type, case RTE_DEV_EVENT_REMOVE: RTE_LOG(ERR, EAL, "The device: %s has been removed!\n", device_name); - /* TODO: After finish failure handle, begin to stop - * packet forward, stop port, close port, detach port. - */ + ret = rte_eth_dev_get_port_by_name(device_name, &port_id); + if (ret) { + RTE_LOG(ERR, EAL, "can not get port by device %s!\n", + device_name); + return; + } + rmv_event_callback((void *)(intptr_t)port_id); break; case RTE_DEV_EVENT_ADD: RTE_LOG(ERR, EAL, "The device: %s has been added!\n", @@ -2779,14 +2761,26 @@ main(int argc, char** argv) init_config(); if (hot_plug) { - /* enable hot plug monitoring */ + ret = rte_dev_hotplug_handle_enable(); + if (ret) { + RTE_LOG(ERR, EAL, + "fail to enable hotplug handling."); + return -1; + } + ret = rte_dev_event_monitor_start(); if (ret) { - rte_errno = EINVAL; + RTE_LOG(ERR, EAL, + "fail to start device event monitoring."); return -1; } - eth_dev_event_callback_register(); + ret = rte_dev_event_callback_register(NULL, + eth_dev_event_callback, NULL); + if (ret) { + printf("faile to register device event callback\n"); + return -1; + } } if (start_port(RTE_PORT_ALL) != 0) -- 2.7.4