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{
    "id": 76604,
    "url": "http://patches.dpdk.org/api/covers/76604/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/cover/1599296854-56620-1-git-send-email-tangchengchang@huawei.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": "<1599296854-56620-1-git-send-email-tangchengchang@huawei.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/1599296854-56620-1-git-send-email-tangchengchang@huawei.com",
    "date": "2020-09-05T09:07:29",
    "name": "[v4,0/5] add Rx buffer size for rxq info structure",
    "submitter": {
        "id": 1792,
        "url": "http://patches.dpdk.org/api/people/1792/?format=api",
        "name": "Chengchang Tang",
        "email": "tangchengchang@huawei.com"
    },
    "mbox": "http://patches.dpdk.org/project/dpdk/cover/1599296854-56620-1-git-send-email-tangchengchang@huawei.com/mbox/",
    "series": [
        {
            "id": 11967,
            "url": "http://patches.dpdk.org/api/series/11967/?format=api",
            "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=11967",
            "date": "2020-09-05T09:07:29",
            "name": "add Rx buffer size for rxq info structure",
            "version": 4,
            "mbox": "http://patches.dpdk.org/series/11967/mbox/"
        }
    ],
    "comments": "http://patches.dpdk.org/api/covers/76604/comments/",
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
        "X-Original-To": "patchwork@inbox.dpdk.org",
        "Delivered-To": "patchwork@inbox.dpdk.org",
        "Received": [
            "from dpdk.org (dpdk.org [92.243.14.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 1F758A04C5;\n\tSat,  5 Sep 2020 11:10:17 +0200 (CEST)",
            "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 1AFA71C0BF;\n\tSat,  5 Sep 2020 11:10:10 +0200 (CEST)",
            "from huawei.com (szxga07-in.huawei.com [45.249.212.35])\n by dpdk.org (Postfix) with ESMTP id 68ADA1B952\n for <dev@dpdk.org>; Sat,  5 Sep 2020 11:10:05 +0200 (CEST)",
            "from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.60])\n by Forcepoint Email with ESMTP id 5659395F481AADD71344;\n Sat,  5 Sep 2020 17:10:00 +0800 (CST)",
            "from localhost.localdomain (10.69.192.56) by\n DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id\n 14.3.487.0; Sat, 5 Sep 2020 17:09:49 +0800"
        ],
        "From": "Chengchang Tang <tangchengchang@huawei.com>",
        "To": "<dev@dpdk.org>",
        "CC": "<linuxarm@huawei.com>, <thomas@monjalon.net>, <arybchenko@solarflare.com>,\n <ferruh.yigit@intel.com>, <wenzhuo.lu@intel.com>, <maryam.tahhan@intel.com>",
        "Date": "Sat, 5 Sep 2020 17:07:29 +0800",
        "Message-ID": "<1599296854-56620-1-git-send-email-tangchengchang@huawei.com>",
        "X-Mailer": "git-send-email 2.7.4",
        "In-Reply-To": "<1592483709-7076-1-git-send-email-tangchengchang@huawei.com>",
        "References": "<1592483709-7076-1-git-send-email-tangchengchang@huawei.com>",
        "MIME-Version": "1.0",
        "Content-Type": "text/plain",
        "X-Originating-IP": "[10.69.192.56]",
        "X-CFilter-Loop": "Reflected",
        "Subject": "[dpdk-dev] [PATCH v4 0/5] add Rx buffer size for rxq info structure",
        "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 <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 <mailto:dev-request@dpdk.org?subject=subscribe>",
        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "In common practice, PMD configure the Rx buffer size which indicate the\nbuffer length could be used for HW in receiving packets according to the\ndata room size of the object in mempool. But in fact, the final value is\nrelated to the specifications of HW, and its values will affect the number\nof fragments in receiving packets when scatter is enabled. By the way,\nsome PMDs may force to enable scatter when the MTU is bigger than the HW\nRx buffer size.\n\nAt present, we have no way to expose relevant information to upper layer\nusers. So, add a field named rx_buf_size in rte_eth_rxq_info to indicate\nthe buffer size used in receiving packets for HW. And this field is\noptional, so there is no need to forcibly update all PMDs.\n\nThis patchset also update testpmd, proc-info tools and add hns3 PMD\nimplementation.\n\nv4:\n  - remove deprecation notice once changes applied\n\nChengchang Tang (5):\n  ethdev: add a field for rxq info structure\n  app/testpmd: add Rx buffer size display in queue info query\n  app/procinfo: add Rx buffer size to --show-port\n  net/hns3: add Rx buffer size to Rx qinfo query\n  doc: remove rxq info structure deprecation notice\n\n app/proc-info/main.c                 | 2 ++\n app/test-pmd/config.c                | 1 +\n doc/guides/rel_notes/deprecation.rst | 5 -----\n drivers/net/hns3/hns3_rxtx.c         | 2 ++\n lib/librte_ethdev/rte_ethdev.h       | 2 ++\n 5 files changed, 7 insertions(+), 5 deletions(-)\n\n--\n2.7.4"
}