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{
    "id": 43628,
    "url": "http://patches.dpdk.org/api/covers/43628/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/cover/20180808070545.13510-1-qi.z.zhang@intel.com/",
    "project": {
        "id": 1,
        "url": "http://patches.dpdk.org/api/projects/1/?format=api",
        "name": "DPDK",
        "link_name": "dpdk",
        "list_id": "dev.dpdk.org",
        "list_email": "dev@dpdk.org",
        "web_url": "http://core.dpdk.org",
        "scm_url": "git://dpdk.org/dpdk",
        "webscm_url": "http://git.dpdk.org/dpdk",
        "list_archive_url": "https://inbox.dpdk.org/dev",
        "list_archive_url_format": "https://inbox.dpdk.org/dev/{}",
        "commit_url_format": ""
    },
    "msgid": "<20180808070545.13510-1-qi.z.zhang@intel.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20180808070545.13510-1-qi.z.zhang@intel.com",
    "date": "2018-08-08T07:05:45",
    "name": "[RFC,0/4] ethdev: claim device reset as async",
    "submitter": {
        "id": 504,
        "url": "http://patches.dpdk.org/api/people/504/?format=api",
        "name": "Qi Zhang",
        "email": "qi.z.zhang@intel.com"
    },
    "mbox": "http://patches.dpdk.org/project/dpdk/cover/20180808070545.13510-1-qi.z.zhang@intel.com/mbox/",
    "series": [
        {
            "id": 935,
            "url": "http://patches.dpdk.org/api/series/935/?format=api",
            "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=935",
            "date": "2018-08-08T07:05:45",
            "name": "ethdev: claim device reset as async",
            "version": 1,
            "mbox": "http://patches.dpdk.org/series/935/mbox/"
        }
    ],
    "comments": "http://patches.dpdk.org/api/covers/43628/comments/",
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
        "X-Original-To": "patchwork@dpdk.org",
        "Delivered-To": "patchwork@dpdk.org",
        "Received": [
            "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 908D91E35;\n\tWed,  8 Aug 2018 09:05:11 +0200 (CEST)",
            "from mga09.intel.com (mga09.intel.com [134.134.136.24])\n\tby dpdk.org (Postfix) with ESMTP id 491E3100C\n\tfor <dev@dpdk.org>; Wed,  8 Aug 2018 09:05:09 +0200 (CEST)",
            "from orsmga008.jf.intel.com ([10.7.209.65])\n\tby orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t08 Aug 2018 00:05:08 -0700",
            "from dpdk51.sh.intel.com ([10.67.110.190])\n\tby orsmga008.jf.intel.com with ESMTP; 08 Aug 2018 00:05:00 -0700"
        ],
        "X-Amp-Result": "SKIPPED(no attachment in message)",
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        "X-ExtLoop1": "1",
        "X-IronPort-AV": "E=Sophos;i=\"5.51,456,1526367600\"; d=\"scan'208\";a=\"63456995\"",
        "From": "Qi Zhang <qi.z.zhang@intel.com>",
        "To": "thomas@monjalon.net, konstantin.ananyev@intel.com,\n\tdeclan.doherty@intel.com, ferruh.yigit@intel.com",
        "Cc": "dev@dpdk.org, benjamin.h.shelton@intel.com, narender.vangati@intel.com, \n\tbeilei.xing@intel.com, wenzhuo.lu@intel.com,\n\tQi Zhang <qi.z.zhang@intel.com>",
        "Date": "Wed,  8 Aug 2018 15:05:45 +0800",
        "Message-Id": "<20180808070545.13510-1-qi.z.zhang@intel.com>",
        "X-Mailer": "git-send-email 2.13.6",
        "Subject": "[dpdk-dev] [RFC 0/4] ethdev: claim device reset as async",
        "X-BeenThere": "dev@dpdk.org",
        "X-Mailman-Version": "2.1.15",
        "Precedence": "list",
        "List-Id": "DPDK patches and discussions <dev.dpdk.org>",
        "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>",
        "List-Archive": "<http://mails.dpdk.org/archives/dev/>",
        "List-Post": "<mailto:dev@dpdk.org>",
        "List-Help": "<mailto:dev-request@dpdk.org?subject=help>",
        "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>",
        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "Device reset may have the dependency, for example, a VF reset expects\nPF ready, or a NIC function as a part of a SOC need to wait for other\nparts of the system be ready, these are time-consuming tasks and will\nblock current thread.\n\nSo we claimed rte_eth_dev_reset as an async API, that makes things\neasy for an application that what to reset the device from the interrupt\nthread since typically a RTE_ETH_EVENT_INTR_RESET handler is invoked\nin interrupt thread.\n\nPMD is responsrible to implement ops->dev_reset in an async way, it\ncan offload the whole task into a separate thread, or maybe just pending\non hardware interrupt as reset dependency ready or start a timely alarm\nto poll register status as a background daemon. PMD is also\nresponsible to raise the RTE_ETH_EVENT_RESET_COMPLETE event to notify the\napplication when reset is complete.\n\nApplication should not assume device reset is finished after\nrte_eth_dev_reset return, it should always wait for a\nRTE_ETH_EVENT_RESET_COMPLETE event and check the reset result.\n\nQi Zhang (4):\n  ethdev: claim device reset as async\n  net/i40e: enable async device reset\n  net/ixgbe: enable async device reset\n  testpmd: enable async device reset\n\n app/test-pmd/testpmd.c           | 55 +++++++++++++++++++++++++++++++++++++++-\n drivers/net/i40e/i40e_ethdev.c   | 28 ++++++++++++++++----\n drivers/net/ixgbe/ixgbe_ethdev.c | 26 ++++++++++++++-----\n lib/librte_ethdev/rte_ethdev.h   | 33 ++++++++++++------------\n 4 files changed, 114 insertions(+), 28 deletions(-)"
}