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{
    "id": 42101,
    "url": "http://patches.dpdk.org/api/patches/42101/",
    "web_url": "http://patches.dpdk.org/patch/42101/",
    "project": {
        "id": 1,
        "url": "http://patches.dpdk.org/api/projects/1/",
        "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"
    },
    "msgid": "<20180702152547.31423-3-maxime.coquelin@redhat.com>",
    "date": "2018-07-02T15:25:45",
    "name": "[v4,2/4] net/virtio: improve Tx offload features negotiation",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": true,
    "hash": "3e158fc66e7267ccde3dd8b45742b599331c36e4",
    "submitter": {
        "id": 512,
        "url": "http://patches.dpdk.org/api/people/512/",
        "name": "Maxime Coquelin",
        "email": "maxime.coquelin@redhat.com"
    },
    "delegate": {
        "id": 2642,
        "url": "http://patches.dpdk.org/api/users/2642/",
        "username": "mcoquelin",
        "first_name": "Maxime",
        "last_name": "Coquelin",
        "email": "maxime.coquelin@redhat.com"
    },
    "mbox": "http://patches.dpdk.org/patch/42101/mbox/",
    "series": [
        {
            "id": 357,
            "url": "http://patches.dpdk.org/api/series/357/",
            "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=357",
            "date": "2018-07-02T15:25:43",
            "name": "net/virtio: Tx simple path removal and offload improvements",
            "version": 4,
            "mbox": "http://patches.dpdk.org/series/357/mbox/"
        }
    ],
    "comments": "http://patches.dpdk.org/api/patches/42101/comments/",
    "check": "fail",
    "checks": "http://patches.dpdk.org/api/patches/42101/checks/",
    "tags": {},
    "headers": {
        "List-Archive": "<http://mails.dpdk.org/archives/dev/>",
        "Return-Path": "<dev-bounces@dpdk.org>",
        "Message-Id": "<20180702152547.31423-3-maxime.coquelin@redhat.com>",
        "To": "tiwei.bie@intel.com,\n\tzhihong.wang@intel.com,\n\tdev@dpdk.org",
        "X-Scanned-By": "MIMEDefang 2.78 on 10.11.54.3",
        "Cc": "yong.liu@intel.com,\n\tMaxime Coquelin <maxime.coquelin@redhat.com>",
        "X-BeenThere": "dev@dpdk.org",
        "Received": [
            "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 4A34E1B51D;\n\tMon,  2 Jul 2018 17:26:09 +0200 (CEST)",
            "from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73])\n\tby dpdk.org (Postfix) with ESMTP id 7FE291B4F8\n\tfor <dev@dpdk.org>; Mon,  2 Jul 2018 17:26:05 +0200 (CEST)",
            "from smtp.corp.redhat.com\n\t(int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3])\n\t(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby mx1.redhat.com (Postfix) with ESMTPS id 1093D8315E;\n\tMon,  2 Jul 2018 15:26:05 +0000 (UTC)",
            "from localhost.localdomain (ovpn-112-41.ams2.redhat.com\n\t[10.36.112.41])\n\tby smtp.corp.redhat.com (Postfix) with ESMTP id D6841111AF34;\n\tMon,  2 Jul 2018 15:26:03 +0000 (UTC)"
        ],
        "Subject": "[dpdk-dev] [PATCH v4 2/4] net/virtio: improve Tx offload features\n\tnegotiation",
        "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>",
        "List-Id": "DPDK patches and discussions <dev.dpdk.org>",
        "X-Greylist": [
            "Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.11.55.1]); Mon, 02 Jul 2018 15:26:05 +0000 (UTC)",
            "inspected by milter-greylist-4.5.16 (mx1.redhat.com\n\t[10.11.55.1]); \n\tMon, 02 Jul 2018 15:26:05 +0000 (UTC) for IP:'10.11.54.3'\n\tDOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com'\n\tHELO:'smtp.corp.redhat.com' FROM:'maxime.coquelin@redhat.com' RCPT:''"
        ],
        "List-Post": "<mailto:dev@dpdk.org>",
        "In-Reply-To": "<20180702152547.31423-1-maxime.coquelin@redhat.com>",
        "Precedence": "list",
        "From": "Maxime Coquelin <maxime.coquelin@redhat.com>",
        "References": "<20180702152547.31423-1-maxime.coquelin@redhat.com>",
        "X-Original-To": "patchwork@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>",
        "Errors-To": "dev-bounces@dpdk.org",
        "List-Help": "<mailto:dev-request@dpdk.org?subject=help>",
        "Delivered-To": "patchwork@dpdk.org",
        "Date": "Mon,  2 Jul 2018 17:25:45 +0200",
        "X-Mailman-Version": "2.1.15",
        "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>"
    },
    "content": "This patch improves the Tx offload features selection depending\non whether the application request for offloads.\n\nWhen the application doesn't request for Tx offload features,\nthe corresponding features bits aren't negotiated.\n\nSigned-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>\n---\n drivers/net/virtio/virtio_ethdev.c | 15 +++++++++++++--\n drivers/net/virtio/virtio_ethdev.h |  3 ---\n 2 files changed, 13 insertions(+), 5 deletions(-)",
    "diff": "diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c\nindex 73c428734..1d223d029 100644\n--- a/drivers/net/virtio/virtio_ethdev.c\n+++ b/drivers/net/virtio/virtio_ethdev.c\n@@ -1806,8 +1806,10 @@ static int\n virtio_dev_configure(struct rte_eth_dev *dev)\n {\n \tconst struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;\n+\tconst struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;\n \tstruct virtio_hw *hw = dev->data->dev_private;\n \tuint64_t rx_offloads = rxmode->offloads;\n+\tuint64_t tx_offloads = txmode->offloads;\n \tuint64_t req_features;\n \tint ret;\n \n@@ -1829,6 +1831,15 @@ virtio_dev_configure(struct rte_eth_dev *dev)\n \t\t\t(1ULL << VIRTIO_NET_F_GUEST_TSO4) |\n \t\t\t(1ULL << VIRTIO_NET_F_GUEST_TSO6);\n \n+\tif (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM |\n+\t\t\t   DEV_TX_OFFLOAD_TCP_CKSUM))\n+\t\treq_features |= (1ULL << VIRTIO_NET_F_CSUM);\n+\n+\tif (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO)\n+\t\treq_features |=\n+\t\t\t(1ULL << VIRTIO_NET_F_HOST_TSO4) |\n+\t\t\t(1ULL << VIRTIO_NET_F_HOST_TSO6);\n+\n \t/* if request features changed, reinit the device */\n \tif (req_features != hw->req_guest_features) {\n \t\tret = virtio_init_device(dev, req_features);\n@@ -2155,14 +2166,14 @@ virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)\n \n \tdev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |\n \t\t\t\t    DEV_TX_OFFLOAD_VLAN_INSERT;\n-\tif (hw->guest_features & (1ULL << VIRTIO_NET_F_CSUM)) {\n+\tif (host_features & (1ULL << VIRTIO_NET_F_CSUM)) {\n \t\tdev_info->tx_offload_capa |=\n \t\t\tDEV_TX_OFFLOAD_UDP_CKSUM |\n \t\t\tDEV_TX_OFFLOAD_TCP_CKSUM;\n \t}\n \ttso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |\n \t\t(1ULL << VIRTIO_NET_F_HOST_TSO6);\n-\tif ((hw->guest_features & tso_mask) == tso_mask)\n+\tif ((host_features & tso_mask) == tso_mask)\n \t\tdev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;\n }\n \ndiff --git a/drivers/net/virtio/virtio_ethdev.h b/drivers/net/virtio/virtio_ethdev.h\nindex 350e9ce73..f4d09df71 100644\n--- a/drivers/net/virtio/virtio_ethdev.h\n+++ b/drivers/net/virtio/virtio_ethdev.h\n@@ -28,9 +28,6 @@\n \t 1u << VIRTIO_NET_F_CTRL_VQ\t  |\t\\\n \t 1u << VIRTIO_NET_F_CTRL_RX\t  |\t\\\n \t 1u << VIRTIO_NET_F_CTRL_VLAN\t  |\t\\\n-\t 1u << VIRTIO_NET_F_CSUM\t  |\t\\\n-\t 1u << VIRTIO_NET_F_HOST_TSO4\t  |\t\\\n-\t 1u << VIRTIO_NET_F_HOST_TSO6\t  |\t\\\n \t 1u << VIRTIO_NET_F_MRG_RXBUF\t  |\t\\\n \t 1u << VIRTIO_NET_F_MTU\t| \\\n \t 1ULL << VIRTIO_NET_F_GUEST_ANNOUNCE |\t\\\n",
    "prefixes": [
        "v4",
        "2/4"
    ]
}