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{ "id": 47353, "url": "http://patchwork.dpdk.org/api/covers/47353/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/cover/20181024143236.21271-1-jfreimann@redhat.com/", "project": { "id": 1, "url": "http://patchwork.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": "<20181024143236.21271-1-jfreimann@redhat.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20181024143236.21271-1-jfreimann@redhat.com", "date": "2018-10-24T14:32:28", "name": "[v9,0/8] implement packed virtqueues", "submitter": { "id": 745, "url": "http://patchwork.dpdk.org/api/people/745/?format=api", "name": "Jens Freimann", "email": "jfreimann@redhat.com" }, "mbox": "http://patchwork.dpdk.org/project/dpdk/cover/20181024143236.21271-1-jfreimann@redhat.com/mbox/", "series": [ { "id": 2074, "url": "http://patchwork.dpdk.org/api/series/2074/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=2074", "date": "2018-10-24T14:32:28", "name": "implement packed virtqueues", "version": 9, "mbox": "http://patchwork.dpdk.org/series/2074/mbox/" } ], "comments": "http://patchwork.dpdk.org/api/covers/47353/comments/", "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 8840A5920;\n\tWed, 24 Oct 2018 16:32:45 +0200 (CEST)", "from mx1.redhat.com (mx1.redhat.com [209.132.183.28])\n\tby dpdk.org (Postfix) with ESMTP id A9F7D5681\n\tfor <dev@dpdk.org>; Wed, 24 Oct 2018 16:32:43 +0200 (CEST)", "from smtp.corp.redhat.com\n\t(int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22])\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 378E1308A94E;\n\tWed, 24 Oct 2018 14:32:42 +0000 (UTC)", "from localhost (ovpn-117-63.ams2.redhat.com [10.36.117.63])\n\tby smtp.corp.redhat.com (Postfix) with ESMTPS id 180CD10018FD;\n\tWed, 24 Oct 2018 14:32:37 +0000 (UTC)" ], "From": "Jens Freimann <jfreimann@redhat.com>", "To": "dev@dpdk.org", "Cc": "tiwei.bie@intel.com,\n\tmaxime.coquelin@redhat.com", "Date": "Wed, 24 Oct 2018 16:32:28 +0200", "Message-Id": "<20181024143236.21271-1-jfreimann@redhat.com>", "X-Scanned-By": "MIMEDefang 2.84 on 10.5.11.22", "X-Greylist": "Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.5.110.41]); Wed, 24 Oct 2018 14:32:42 +0000 (UTC)", "Subject": "[dpdk-dev] [PATCH v9 0/8] implement packed virtqueues", "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": "This is a basic implementation of packed virtqueues as specified in the\nVirtio 1.1 draft. A compiled version of the current draft is available\nat https://github.com/oasis-tcs/virtio-docs.git (or as .pdf at\nhttps://github.com/oasis-tcs/virtio-docs/blob/master/virtio-v1.1-packed-wd10.pdf\n\nA packed virtqueue is different from a split virtqueue in that it\nconsists of only a single descriptor ring that replaces available and\nused ring, index and descriptor pointers.\n\nEach descriptor is readable and writable and has a flags field. These flags\nwill mark if a descriptor is available or used. To detect new available descriptors\neven after the ring has wrapped, device and driver each have a\nsingle-bit wrap counter that is flipped from 0 to 1 and vice versa every time\nthe last descriptor in the ring is used/made available.\n\nv8-v9:\n * fix virtio_ring_free_chain_packed() to handle descriptors\n correctly in case of out-of-order\n * fix check in virtqueue_xmit_cleanup_packed() to improve performance\n\nv7->v8:\n * move desc_is_used change to correct patch\n * remove trailing newline\n * correct xmit code, flags update and memory barrier\n * move packed desc init to dedicated function, split\n and packed variant\n\n\nJens Freimann (8):\n net/virtio: vring init for packed queues\n net/virtio: add packed virtqueue defines\n net/virtio: add packed virtqueue helpers\n net/virtio: dump packed virtqueue data\n net/virtio: implement transmit path for packed queues\n net/virtio: implement receive path for packed queues\n net/virtio: add virtio send command packed queue support\n net/virtio: enable packed virtqueues by default\n\n drivers/net/virtio/virtio_ethdev.c | 154 ++++++--\n drivers/net/virtio/virtio_ethdev.h | 5 +\n drivers/net/virtio/virtio_pci.h | 7 +\n drivers/net/virtio/virtio_ring.h | 105 +++++-\n drivers/net/virtio/virtio_rxtx.c | 560 +++++++++++++++++++++++++++--\n drivers/net/virtio/virtqueue.c | 22 ++\n drivers/net/virtio/virtqueue.h | 42 ++-\n 7 files changed, 841 insertions(+), 54 deletions(-)" }