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GET /api/patches/313/?format=api
http://patches.dpdk.org/api/patches/313/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/1409812499-15656-1-git-send-email-changchun.ouyang@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": "<1409812499-15656-1-git-send-email-changchun.ouyang@intel.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1409812499-15656-1-git-send-email-changchun.ouyang@intel.com", "date": "2014-09-04T06:34:59", "name": "[dpdk-dev] virtio: Fix vring entry number issue", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "df311bdc699d145ee06a236f441cf3b1021c6b2c", "submitter": { "id": 31, "url": "http://patches.dpdk.org/api/people/31/?format=api", "name": "Ouyang Changchun", "email": "changchun.ouyang@intel.com" }, "delegate": null, "mbox": "http://patches.dpdk.org/project/dpdk/patch/1409812499-15656-1-git-send-email-changchun.ouyang@intel.com/mbox/", "series": [], "comments": "http://patches.dpdk.org/api/patches/313/comments/", "check": "pending", "checks": "http://patches.dpdk.org/api/patches/313/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<couyang@shecgisg004.sh.intel.com>", "Received": [ "from mga11.intel.com (mga11.intel.com [192.55.52.93])\n\tby dpdk.org (Postfix) with ESMTP id C3E15685B\n\tfor <dev@dpdk.org>; Thu, 4 Sep 2014 08:30:34 +0200 (CEST)", "from fmsmga002.fm.intel.com ([10.253.24.26])\n\tby fmsmga102.fm.intel.com with ESMTP; 03 Sep 2014 23:35:13 -0700", "from shvmail01.sh.intel.com ([10.239.29.42])\n\tby fmsmga002.fm.intel.com with ESMTP; 03 Sep 2014 23:35:10 -0700", "from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com\n\t[10.239.29.89])\n\tby shvmail01.sh.intel.com with ESMTP id s846Z8TB013752;\n\tThu, 4 Sep 2014 14:35:08 +0800", "from shecgisg004.sh.intel.com (localhost [127.0.0.1])\n\tby shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP\n\tid s846Z6Fw015759; Thu, 4 Sep 2014 14:35:08 +0800", "(from couyang@localhost)\n\tby shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id s846Z1vK015755; \n\tThu, 4 Sep 2014 14:35:01 +0800" ], "X-ExtLoop1": "1", "X-IronPort-AV": "E=Sophos;i=\"5.04,464,1406617200\"; d=\"scan'208\";a=\"594370834\"", "From": "Ouyang Changchun <changchun.ouyang@intel.com>", "To": "dev@dpdk.org", "Date": "Thu, 4 Sep 2014 14:34:59 +0800", "Message-Id": "<1409812499-15656-1-git-send-email-changchun.ouyang@intel.com>", "X-Mailer": "git-send-email 1.7.0.7", "Subject": "[dpdk-dev] [PATCH] virtio: Fix vring entry number issue", "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>", "X-List-Received-Date": "Thu, 04 Sep 2014 06:30:35 -0000" }, "content": "Fix one issue in virtio TX: it needs one more vring entry to hold the virtio header when transmitting packets, it is used later to determine whether to free more entries from used vring.\n\nSigned-off-by: Changchun Ouyang <changchun.ouyang@intel.com>\nReviewed-by: Huawei Xie <huawei.xie@intel.com>\nTested-by: Jingguo Fu <jingguox.fu@intel.com>\n---\n lib/librte_pmd_virtio/virtio_rxtx.c | 3 ++-\n 1 file changed, 2 insertions(+), 1 deletion(-)", "diff": "diff --git a/lib/librte_pmd_virtio/virtio_rxtx.c b/lib/librte_pmd_virtio/virtio_rxtx.c\nindex 0b10108..b1c189c 100644\n--- a/lib/librte_pmd_virtio/virtio_rxtx.c\n+++ b/lib/librte_pmd_virtio/virtio_rxtx.c\n@@ -699,7 +699,8 @@ virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)\n \tnum = (uint16_t)(likely(nb_used < VIRTIO_MBUF_BURST_SZ) ? nb_used : VIRTIO_MBUF_BURST_SZ);\n \n \twhile (nb_tx < nb_pkts) {\n-\t\tint need = tx_pkts[nb_tx]->pkt.nb_segs - txvq->vq_free_cnt;\n+\t\t/* Need one more entry for virtio header. */\n+\t\tint need = tx_pkts[nb_tx]->pkt.nb_segs - txvq->vq_free_cnt + 1;\n \t\tint deq_cnt = RTE_MIN(need, (int)num);\n \n \t\tnum -= (deq_cnt > 0) ? deq_cnt : 0;\n", "prefixes": [ "dpdk-dev" ] }{ "id": 313, "url": "