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{
    "id": 4080,
    "url": "https://patches.dpdk.org/api/patches/4080/?format=api",
    "web_url": "https://patches.dpdk.org/project/dpdk/patch/1426823642-27360-1-git-send-email-haifeng.lin@huawei.com/",
    "project": {
        "id": 1,
        "url": "https://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",
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    "msgid": "<1426823642-27360-1-git-send-email-haifeng.lin@huawei.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/1426823642-27360-1-git-send-email-haifeng.lin@huawei.com",
    "date": "2015-03-20T03:54:02",
    "name": "[dpdk-dev] lib/librte_vhost:fix can't send packet anymore after mempool is full again",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "43f100871de6cb316836042756b166750f5e2bd9",
    "submitter": {
        "id": 69,
        "url": "https://patches.dpdk.org/api/people/69/?format=api",
        "name": "Linhaifeng",
        "email": "haifeng.lin@huawei.com"
    },
    "delegate": null,
    "mbox": "https://patches.dpdk.org/project/dpdk/patch/1426823642-27360-1-git-send-email-haifeng.lin@huawei.com/mbox/",
    "series": [],
    "comments": "https://patches.dpdk.org/api/patches/4080/comments/",
    "check": "pending",
    "checks": "https://patches.dpdk.org/api/patches/4080/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 43A4758F1;\n\tFri, 20 Mar 2015 04:55:42 +0100 (CET)",
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        ],
        "From": "linhaifeng <haifeng.lin@huawei.com>",
        "To": "<dev@dpdk.org>",
        "Date": "Fri, 20 Mar 2015 11:54:02 +0800",
        "Message-ID": "<1426823642-27360-1-git-send-email-haifeng.lin@huawei.com>",
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        "X-Mirapoint-Virus-RAPID-Raw": "score=unknown(0),\n\trefid=str=0001.0A020206.550B9A37.0132, ss=1, re=0.001, recu=0.000,\n\treip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0,\n\tso=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32",
        "X-Mirapoint-Loop-Id": "fe58b2b5acdda8fc90f30863130967f8",
        "Subject": "[dpdk-dev] [PATCH] lib/librte_vhost:fix can't send packet anymore\n\tafter mempool is full again",
        "X-BeenThere": "dev@dpdk.org",
        "X-Mailman-Version": "2.1.15",
        "Precedence": "list",
        "List-Id": "patches and discussions about DPDK <dev.dpdk.org>",
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        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "From: Linhaifeng <haifeng.lin@huawei.com>\n\nWhen failed to malloc buffer from mempool we just update last_used_idx but\nnot used->idx so after many times vhost thought have handle all packets\nbut virtio_net thought vhost have not handle all packets and will not\nupdate avail->idx.\n\nSigned-off-by: Linhaifeng <haifeng.lin@huawei.com>\n---\n lib/librte_vhost/vhost_rxtx.c | 3 ++-\n 1 file changed, 2 insertions(+), 1 deletion(-)",
    "diff": "diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c\nindex 535c7a1..93a8fff 100644\n--- a/lib/librte_vhost/vhost_rxtx.c\n+++ b/lib/librte_vhost/vhost_rxtx.c\n@@ -609,7 +609,7 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,\n \t\tif (unlikely(m == NULL)) {\n \t\t\tRTE_LOG(ERR, VHOST_DATA,\n \t\t\t\t\"Failed to allocate memory for mbuf.\\n\");\n-\t\t\treturn entry_success;\n+\t\t\tgoto finish;\n \t\t}\n \t\tseg_offset = 0;\n \t\tseg_avail = m->buf_len - RTE_PKTMBUF_HEADROOM;\n@@ -721,6 +721,7 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,\n \t\tentry_success++;\n \t}\n \n+finish:\n \trte_compiler_barrier();\n \tvq->used->idx += entry_success;\n \t/* Kick guest if required. */\n",
    "prefixes": [
        "dpdk-dev"
    ]
}