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GET /api/patches/17340/?format=api
{ "id": 17340, "url": "http://patches.dpdk.org/api/patches/17340/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/C1042323-AA70-46AF-B4D2-24A470ED8DB9@cisco.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": "<C1042323-AA70-46AF-B4D2-24A470ED8DB9@cisco.com>", "list_archive_url": "https://inbox.dpdk.org/dev/C1042323-AA70-46AF-B4D2-24A470ED8DB9@cisco.com", "date": "2016-11-30T09:18:42", "name": "[dpdk-dev,v2] virtio: tx with can_push when VERSION_1 is set", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": true, "hash": "677c4422c9aa0dc27b434d804438502fe8c5937c", "submitter": { "id": 556, "url": "http://patches.dpdk.org/api/people/556/?format=api", "name": "Pierre Pfister", "email": "ppfister@cisco.com" }, "delegate": { "id": 355, "url": "http://patches.dpdk.org/api/users/355/?format=api", "username": "yliu", "first_name": "Yuanhan", "last_name": "Liu", "email": "yuanhan.liu@linux.intel.com" }, "mbox": "http://patches.dpdk.org/project/dpdk/patch/C1042323-AA70-46AF-B4D2-24A470ED8DB9@cisco.com/mbox/", "series": [], "comments": "http://patches.dpdk.org/api/patches/17340/comments/", "check": "pending", "checks": "http://patches.dpdk.org/api/patches/17340/checks/", "tags": {}, "related": [], "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 [IPv6:::1])\n\tby dpdk.org (Postfix) with ESMTP id C49B337B8;\n\tWed, 30 Nov 2016 10:18:46 +0100 (CET)", "from rcdn-iport-9.cisco.com (rcdn-iport-9.cisco.com [173.37.86.80])\n\tby dpdk.org (Postfix) with ESMTP id B1E4537A8\n\tfor <dev@dpdk.org>; Wed, 30 Nov 2016 10:18:44 +0100 (CET)", "from rcdn-core-1.cisco.com ([173.37.93.152])\n\tby rcdn-iport-9.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t30 Nov 2016 09:18:43 +0000", "from XCH-ALN-019.cisco.com (xch-aln-019.cisco.com [173.36.7.29])\n\tby rcdn-core-1.cisco.com (8.14.5/8.14.5) with ESMTP id uAU9Ih2a032252\n\t(version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL);\n\tWed, 30 Nov 2016 09:18:43 GMT", "from xch-aln-017.cisco.com (173.36.7.27) by XCH-ALN-019.cisco.com\n\t(173.36.7.29) with Microsoft SMTP Server (TLS) id 15.0.1210.3;\n\tWed, 30 Nov 2016 03:18:42 -0600", "from xch-aln-017.cisco.com ([173.36.7.27]) by XCH-ALN-017.cisco.com\n\t([173.36.7.27]) with mapi id 15.00.1210.000;\n\tWed, 30 Nov 2016 03:18:42 -0600" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple;\n\td=cisco.com; i=@cisco.com; l=1177; q=dns/txt; s=iport;\n\tt=1480497524; x=1481707124;\n\th=from:to:cc:subject:date:message-id:references:\n\tin-reply-to:content-id:content-transfer-encoding: mime-version;\n\tbh=uFNGiuW0DAYwpmGO9pl6Qezn+kM4u/oCGqMXcSvlOkI=;\n\tb=AT1MoZdaE6wM7GwZtY9F49rz87U7fb6QJ4Ec5s5i29P8CQZtsOr35Tn3\n\tRhgb9WCFefofsSxoydAj4k4P5IOKBiJ8vaeMdv3h8wQeT6NcF+80tbhQL\n\t6QWwWNazTsoD5b9MBlZ2uAYfjgg/k1Q2yZmgotSJg79THqZ/cTO595wfx o=;", "X-IronPort-Anti-Spam-Filtered": "true", "X-IronPort-Anti-Spam-Result": "=?us-ascii?q?A0AHAwCEmD5Y/5hdJa1dGgEBAQECAQEBA?=\n\t=?us-ascii?q?QgBAQEBgzgBAQEBAR+BWweNPqoLgg6CB4YiAoF2PxQBAgEBAQEBAQFiHQuEaQI?=\n\t=?us-ascii?q?EJxM/EAIBPhAyJQIEDgWIba5aPYtUAQEBAQEBAQEBAQEBAQEBAQEBAQEBHIY+g?=\n\t=?us-ascii?q?X2Gd4NhgjAFmlUBkQ2QMkmRNAEeN4EXMAEBgyccgV1yhhKBMIENAQEB?=", "X-IronPort-AV": "E=Sophos;i=\"5.31,573,1473120000\"; d=\"scan'208\";a=\"175282461\"", "From": "\"Pierre Pfister (ppfister)\" <ppfister@cisco.com>", "To": "\"dev@dpdk.org\" <dev@dpdk.org>", "CC": "Yuanhan Liu <yuanhan.liu@linux.intel.com>, Maxime Coquelin\n\t<maxime.coquelin@redhat.com>", "Thread-Topic": "[dpdk-dev] [PATCH v2] virtio: tx with can_push when VERSION_1\n\tis set", "Thread-Index": "AQHSSuq+3VobKIFZrE+Y5YtuRB59Zw==", "Date": "Wed, 30 Nov 2016 09:18:42 +0000", "Message-ID": "<C1042323-AA70-46AF-B4D2-24A470ED8DB9@cisco.com>", "References": "<82834CFE-767C-41B0-9327-E64B8210E076@cisco.com>\n\t<46762894-5016-f634-c355-77af881685e6@redhat.com>\n\t<1FAE01C3-B03F-443A-A77C-579254A07E0E@cisco.com>\n\t<5c99bc35-839b-84b8-1df9-db80f288d7b7@redhat.com>\n\t<A0EE9DE0-C82E-44CF-BB85-245488B78034@cisco.com>\n\t<30923c66-8eaa-f7d4-2e6a-d65d8b254e8e@redhat.com>\n\t<6D3BD8A2-1567-42FA-9672-EE682D827A84@cisco.com>", "In-Reply-To": "<6D3BD8A2-1567-42FA-9672-EE682D827A84@cisco.com>", "Accept-Language": "en-US", "Content-Language": "en-US", "X-MS-Has-Attach": "", "X-MS-TNEF-Correlator": "", "x-ms-exchange-messagesentrepresentingtype": "1", "x-ms-exchange-transport-fromentityheader": "Hosted", "x-originating-ip": "[10.228.42.25]", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-ID": "<7E4F872180971847A2AAC8B75D017D92@emea.cisco.com>", "Content-Transfer-Encoding": "quoted-printable", "MIME-Version": "1.0", "Subject": "[dpdk-dev] [PATCH v2] virtio: tx with can_push when VERSION_1 is set", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "patches and discussions about DPDK <dev.dpdk.org>", "List-Unsubscribe": "<http://dpdk.org/ml/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://dpdk.org/ml/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<http://dpdk.org/ml/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "Current virtio driver advertises VERSION_1 support,\nbut does not handle device's VERSION_1 support when\nsending packets (it looks for ANY_LAYOUT feature,\nwhich is absent).\n\nThis patch enables 'can_push' in tx path when VERSION_1\nis advertised by the device.\n\nThis significantly improves small packets forwarding rate\ntowards devices advertising VERSION_1 feature.\n\nSigned-off-by: Pierre Pfister <ppfister@cisco.com>\n---\n drivers/net/virtio/virtio_rxtx.c | 3 ++-\n 1 file changed, 2 insertions(+), 1 deletion(-)", "diff": "diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c\nindex 22d97a4..1e5a6b9 100644\n--- a/drivers/net/virtio/virtio_rxtx.c\n+++ b/drivers/net/virtio/virtio_rxtx.c\n@@ -1015,7 +1015,8 @@ virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)\n \t\t}\n \n \t\t/* optimize ring usage */\n-\t\tif (vtpci_with_feature(hw, VIRTIO_F_ANY_LAYOUT) &&\n+\t\tif ((vtpci_with_feature(hw, VIRTIO_F_ANY_LAYOUT) ||\n+\t\t vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) &&\n \t\t rte_mbuf_refcnt_read(txm) == 1 &&\n \t\t RTE_MBUF_DIRECT(txm) &&\n \t\t txm->nb_segs == 1 &&\n", "prefixes": [ "dpdk-dev", "v2" ] }