From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 623B2A0613 for ; Thu, 29 Aug 2019 08:26:56 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 26E2B1C298; Thu, 29 Aug 2019 08:26:55 +0200 (CEST) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by dpdk.org (Postfix) with ESMTP id 182B41C295 for ; Thu, 29 Aug 2019 08:26:53 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Aug 2019 23:26:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,442,1559545200"; d="scan'208";a="182252042" Received: from storage36.sh.intel.com ([10.67.110.166]) by fmsmga007.fm.intel.com with ESMTP; 28 Aug 2019 23:26:51 -0700 From: JinYu To: dev@dpdk.org Cc: changpeng.liu@intel.com, maxime.coquelin@redhat.com, tiwei.bie@intel.com, zhihong.wang@intel.com, JinYu 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 protocol feature X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This patches introduces two new messages VHOST_USER_GET_INFLIGHT_FD and VHOST_USER_SET_INFLIGHT_FD to support transferring a shared buffer between qemu and backend for backend reconnection. Now It can both support split and packed ring. The example code show how these APIs work. The test has passed. How to test the example: 1, Qemu need a patch. https://patchwork.kernel.org/patch/10861411/ it also needs some manual modifications: we should confirm that before we send get inflight we have already sent the set features but it seems Qemu didn't do like this. So we manually revise this, we can add below code in vhost_dev_get_inflight int r; r = vhost_dev_set_features(dev, dev->log_enabled); if (r < 0) { return -errno; } before get_inflight_fd. 2, Guest OS version >= 5.0 3, run the example 4, run the qemu with vhost-user-blk-pci. eg: -chardev socket,id=spdk_vhost_blk0,reconnect=1,path=xxxx\ -device vhost-user-blk-pci,ring_packed=on,chardev=spdk_vhost_blk0,num-queues=1\ 5, run fio in the guest 6, kill the example and run again. 7, the fio in the guest should continue run without errors. JinYu (10): vhost: add the inflight description vhost: add packed ring vhost: add the inflight structure vhost: add two new messages to support a shared buffer vhost: checkout and cleanup the resubmit inflight information vhost: add the APIs to operate inflight ring vhost: add APIs for user getting inflight ring vhost: fix vring functions to support packed ring vhost: add an API for judging vq format vhost: add vhost-user-blk example which support inflight examples/vhost_blk/Makefile | 67 ++ examples/vhost_blk/blk.c | 125 +++ examples/vhost_blk/blk_spec.h | 95 ++ examples/vhost_blk/meson.build | 20 + examples/vhost_blk/vhost_blk.c | 1313 +++++++++++++++++++++++++ examples/vhost_blk/vhost_blk.h | 116 +++ examples/vhost_blk/vhost_blk_compat.c | 195 ++++ lib/librte_vhost/rte_vhost.h | 250 ++++- lib/librte_vhost/vhost.c | 396 +++++++- lib/librte_vhost/vhost.h | 16 + lib/librte_vhost/vhost_user.c | 439 +++++++++ lib/librte_vhost/vhost_user.h | 12 +- 12 files changed, 3032 insertions(+), 12 deletions(-) create mode 100644 examples/vhost_blk/Makefile create mode 100644 examples/vhost_blk/blk.c create mode 100644 examples/vhost_blk/blk_spec.h create mode 100644 examples/vhost_blk/meson.build create mode 100644 examples/vhost_blk/vhost_blk.c create mode 100644 examples/vhost_blk/vhost_blk.h create mode 100644 examples/vhost_blk/vhost_blk_compat.c -- 2.17.2