get:
Show a patch.

patch:
Update a patch.

put:
Update a patch.

GET /api/patches/42017/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 42017,
    "url": "http://patches.dpdk.org/api/patches/42017/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/patch/20180630235049.62610-6-yong.liu@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": "<20180630235049.62610-6-yong.liu@intel.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20180630235049.62610-6-yong.liu@intel.com",
    "date": "2018-06-30T23:50:45",
    "name": "[v4,5/9] net/virtio: free in-order descriptors before device start",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "1836f1121ee1b43d83506565f0b4762b66132619",
    "submitter": {
        "id": 17,
        "url": "http://patches.dpdk.org/api/people/17/?format=api",
        "name": "Marvin Liu",
        "email": "yong.liu@intel.com"
    },
    "delegate": {
        "id": 2642,
        "url": "http://patches.dpdk.org/api/users/2642/?format=api",
        "username": "mcoquelin",
        "first_name": "Maxime",
        "last_name": "Coquelin",
        "email": "maxime.coquelin@redhat.com"
    },
    "mbox": "http://patches.dpdk.org/project/dpdk/patch/20180630235049.62610-6-yong.liu@intel.com/mbox/",
    "series": [
        {
            "id": 336,
            "url": "http://patches.dpdk.org/api/series/336/?format=api",
            "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=336",
            "date": "2018-06-30T23:50:40",
            "name": "support in-order feature",
            "version": 4,
            "mbox": "http://patches.dpdk.org/series/336/mbox/"
        }
    ],
    "comments": "http://patches.dpdk.org/api/patches/42017/comments/",
    "check": "success",
    "checks": "http://patches.dpdk.org/api/patches/42017/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 [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 307341BEBC;\n\tSat, 30 Jun 2018 18:05:19 +0200 (CEST)",
            "from mga14.intel.com (mga14.intel.com [192.55.52.115])\n\tby dpdk.org (Postfix) with ESMTP id 176741BEAA\n\tfor <dev@dpdk.org>; Sat, 30 Jun 2018 18:05:12 +0200 (CEST)",
            "from fmsmga004.fm.intel.com ([10.253.24.48])\n\tby fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t30 Jun 2018 09:05:12 -0700",
            "from dpdk-test32.sh.intel.com ([10.67.119.193])\n\tby fmsmga004.fm.intel.com with ESMTP; 30 Jun 2018 09:05:11 -0700"
        ],
        "X-Amp-Result": "SKIPPED(no attachment in message)",
        "X-Amp-File-Uploaded": "False",
        "X-ExtLoop1": "1",
        "X-IronPort-AV": "E=Sophos;i=\"5.51,291,1526367600\"; d=\"scan'208\";a=\"67643540\"",
        "From": "Marvin Liu <yong.liu@intel.com>",
        "To": "maxime.coquelin@redhat.com,\n\ttiwei.bie@intel.com",
        "Cc": "zhihong.wang@intel.com,\n\tdev@dpdk.org,\n\tMarvin Liu <yong.liu@intel.com>",
        "Date": "Sun,  1 Jul 2018 07:50:45 +0800",
        "Message-Id": "<20180630235049.62610-6-yong.liu@intel.com>",
        "X-Mailer": "git-send-email 2.17.0",
        "In-Reply-To": "<20180630235049.62610-1-yong.liu@intel.com>",
        "References": "<20180630235049.62610-1-yong.liu@intel.com>",
        "Subject": "[dpdk-dev] [PATCH v4 5/9] net/virtio: free in-order descriptors\n\tbefore device start",
        "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\t<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\t<mailto:dev-request@dpdk.org?subject=subscribe>",
        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "Add new function for freeing IN_ORDER descriptors. As descriptors will\nbe allocated and freed sequentially when IN_ORDER feature was\nnegotiated. There will be no need to utilize chain for freed descriptors\nmanagement, only index update is enough.\n\nSigned-off-by: Marvin Liu <yong.liu@intel.com>",
    "diff": "diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c\nindex 92fab2174..0bca29855 100644\n--- a/drivers/net/virtio/virtio_rxtx.c\n+++ b/drivers/net/virtio/virtio_rxtx.c\n@@ -47,6 +47,13 @@ virtio_dev_rx_queue_done(void *rxq, uint16_t offset)\n \treturn VIRTQUEUE_NUSED(vq) >= offset;\n }\n \n+void\n+vq_ring_free_inorder(struct virtqueue *vq, uint16_t desc_idx, uint16_t num)\n+{\n+\tvq->vq_free_cnt += num;\n+\tvq->vq_desc_tail_idx = desc_idx & (vq->vq_nentries - 1);\n+}\n+\n void\n vq_ring_free_chain(struct virtqueue *vq, uint16_t desc_idx)\n {\ndiff --git a/drivers/net/virtio/virtqueue.c b/drivers/net/virtio/virtqueue.c\nindex a7d0a9cbe..56a77cc71 100644\n--- a/drivers/net/virtio/virtqueue.c\n+++ b/drivers/net/virtio/virtqueue.c\n@@ -74,6 +74,14 @@ virtqueue_rxvq_flush(struct virtqueue *vq)\n \t\t\tdesc_idx = used_idx;\n \t\t\trte_pktmbuf_free(vq->sw_ring[desc_idx]);\n \t\t\tvq->vq_free_cnt++;\n+\t\t} else if (hw->use_inorder_rx) {\n+\t\t\tdesc_idx = (uint16_t)uep->id;\n+\t\t\tdxp = &vq->vq_descx[desc_idx];\n+\t\t\tif (dxp->cookie != NULL) {\n+\t\t\t\trte_pktmbuf_free(dxp->cookie);\n+\t\t\t\tdxp->cookie = NULL;\n+\t\t\t}\n+\t\t\tvq_ring_free_inorder(vq, desc_idx, 1);\n \t\t} else {\n \t\t\tdesc_idx = (uint16_t)uep->id;\n \t\t\tdxp = &vq->vq_descx[desc_idx];\ndiff --git a/drivers/net/virtio/virtqueue.h b/drivers/net/virtio/virtqueue.h\nindex 14364f356..26518ed98 100644\n--- a/drivers/net/virtio/virtqueue.h\n+++ b/drivers/net/virtio/virtqueue.h\n@@ -306,6 +306,8 @@ virtio_get_queue_type(struct virtio_hw *hw, uint16_t vtpci_queue_idx)\n #define VIRTQUEUE_NUSED(vq) ((uint16_t)((vq)->vq_ring.used->idx - (vq)->vq_used_cons_idx))\n \n void vq_ring_free_chain(struct virtqueue *vq, uint16_t desc_idx);\n+void vq_ring_free_inorder(struct virtqueue *vq, uint16_t desc_idx,\n+\t\t\t  uint16_t num);\n \n static inline void\n vq_update_avail_idx(struct virtqueue *vq)\n",
    "prefixes": [
        "v4",
        "5/9"
    ]
}