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{ "id": 58206, "url": "https://patches.dpdk.org/api/covers/58206/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/cover/20190829141224.49700-1-jin.yu@intel.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", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20190829141224.49700-1-jin.yu@intel.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20190829141224.49700-1-jin.yu@intel.com", "date": "2019-08-29T14:12:14", "name": "[v6,00/10] vhost: support inflight share memory protocol feature", "submitter": { "id": 1265, "url": "https://patches.dpdk.org/api/people/1265/?format=api", "name": "Jin Yu", "email": "jin.yu@intel.com" }, "mbox": "https://patches.dpdk.org/project/dpdk/cover/20190829141224.49700-1-jin.yu@intel.com/mbox/", "series": [ { "id": 6161, "url": "https://patches.dpdk.org/api/series/6161/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=6161", "date": "2019-08-29T14:12:14", "name": "vhost: support inflight share memory protocol feature", "version": 6, "mbox": "https://patches.dpdk.org/series/6161/mbox/" } ], "comments": "https://patches.dpdk.org/api/covers/58206/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 26E2B1C298;\n\tThu, 29 Aug 2019 08:26:55 +0200 (CEST)", "from mga14.intel.com (mga14.intel.com [192.55.52.115])\n\tby dpdk.org (Postfix) with ESMTP id 182B41C295\n\tfor <dev@dpdk.org>; Thu, 29 Aug 2019 08:26:53 +0200 (CEST)", "from fmsmga007.fm.intel.com ([10.253.24.52])\n\tby fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t28 Aug 2019 23:26:53 -0700", "from storage36.sh.intel.com ([10.67.110.166])\n\tby fmsmga007.fm.intel.com with ESMTP; 28 Aug 2019 23:26:51 -0700" ], "X-Amp-Result": "SKIPPED(no attachment in message)", "X-Amp-File-Uploaded": "False", "X-ExtLoop1": "1", "X-IronPort-AV": "E=Sophos;i=\"5.64,442,1559545200\"; d=\"scan'208\";a=\"182252042\"", "From": "JinYu <jin.yu@intel.com>", "To": "dev@dpdk.org", "Cc": "changpeng.liu@intel.com, maxime.coquelin@redhat.com, tiwei.bie@intel.com,\n\tzhihong.wang@intel.com, JinYu <jin.yu@intel.com>", "Date": "Thu, 29 Aug 2019 22:12:14 +0800", "Message-Id": "<20190829141224.49700-1-jin.yu@intel.com>", "X-Mailer": "git-send-email 2.17.2", "In-Reply-To": "<20190806182500.22320>", "References": "<20190806182500.22320>", "Subject": "[dpdk-dev] [PATCH v6 00/10] vhost: support inflight share memory\n\tprotocol feature", "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 patches introduces two new messages VHOST_USER_GET_INFLIGHT_FD\nand VHOST_USER_SET_INFLIGHT_FD to support transferring a shared\nbuffer between qemu and backend for backend reconnection.\nNow It can both support split and packed ring. The example code show\nhow these APIs work. The test has passed.\n\nHow to test the example:\n1, Qemu need a patch.\nhttps://patchwork.kernel.org/patch/10861411/\nit also needs some manual modifications:\nwe should confirm that before we send get inflight we have already\nsent the set features but it seems Qemu didn't do like this. So we\nmanually revise this, we can add below code in vhost_dev_get_inflight\n int r;\n\n r = vhost_dev_set_features(dev, dev->log_enabled);\n if (r < 0) {\n return -errno;\n }\nbefore get_inflight_fd.\n2, Guest OS version >= 5.0\n3, run the example\n4, run the qemu with vhost-user-blk-pci.\n eg:\n -chardev socket,id=spdk_vhost_blk0,reconnect=1,path=xxxx\\\n -device vhost-user-blk-pci,ring_packed=on,chardev=spdk_vhost_blk0,num-queues=1\\\n5, run fio in the guest\n6, kill the example and run again.\n7, the fio in the guest should continue run without errors.\n\nJinYu (10):\n vhost: add the inflight description\n vhost: add packed ring\n vhost: add the inflight structure\n vhost: add two new messages to support a shared buffer\n vhost: checkout and cleanup the resubmit inflight information\n vhost: add the APIs to operate inflight ring\n vhost: add APIs for user getting inflight ring\n vhost: fix vring functions to support packed ring\n vhost: add an API for judging vq format\n vhost: add vhost-user-blk example which support inflight\n\n examples/vhost_blk/Makefile | 67 ++\n examples/vhost_blk/blk.c | 125 +++\n examples/vhost_blk/blk_spec.h | 95 ++\n examples/vhost_blk/meson.build | 20 +\n examples/vhost_blk/vhost_blk.c | 1313 +++++++++++++++++++++++++\n examples/vhost_blk/vhost_blk.h | 116 +++\n examples/vhost_blk/vhost_blk_compat.c | 195 ++++\n lib/librte_vhost/rte_vhost.h | 250 ++++-\n lib/librte_vhost/vhost.c | 396 +++++++-\n lib/librte_vhost/vhost.h | 16 +\n lib/librte_vhost/vhost_user.c | 439 +++++++++\n lib/librte_vhost/vhost_user.h | 12 +-\n 12 files changed, 3032 insertions(+), 12 deletions(-)\n create mode 100644 examples/vhost_blk/Makefile\n create mode 100644 examples/vhost_blk/blk.c\n create mode 100644 examples/vhost_blk/blk_spec.h\n create mode 100644 examples/vhost_blk/meson.build\n create mode 100644 examples/vhost_blk/vhost_blk.c\n create mode 100644 examples/vhost_blk/vhost_blk.h\n create mode 100644 examples/vhost_blk/vhost_blk_compat.c" }