From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxime Coquelin Subject: [PATCH 3/7] vhost: Add new ready status flag Date: Mon, 13 Feb 2017 15:28:16 +0100 Message-ID: <20170213142820.8964-4-maxime.coquelin@redhat.com> References: <20170213142820.8964-1-maxime.coquelin@redhat.com> Cc: Maxime Coquelin To: aconole@redhat.com, sodey@sonusnet.com, yuanhan.liu@linux.intel.com, jianfeng.tan@intel.com, dev@dpdk.org Return-path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by dpdk.org (Postfix) with ESMTP id D69FEF610 for ; Mon, 13 Feb 2017 15:28:43 +0100 (CET) In-Reply-To: <20170213142820.8964-1-maxime.coquelin@redhat.com> 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 patch adds a new status flag indicating the Virtio device is ready to operate. Signed-off-by: Maxime Coquelin --- lib/librte_vhost/vhost.h | 2 ++ lib/librte_vhost/vhost_user.c | 20 +++++++++++++------- 2 files changed, 15 insertions(+), 7 deletions(-) diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h index 549296f..e8b7e44 100644 --- a/lib/librte_vhost/vhost.h +++ b/lib/librte_vhost/vhost.h @@ -46,6 +46,8 @@ /* Used to indicate that the device is running on a data core */ #define VIRTIO_DEV_RUNNING 1 +/* Used to indicate that the device is ready to operate */ +#define VIRTIO_DEV_READY 2 /* Backend value set by guest. */ #define VIRTIO_DEV_STOPPED -1 diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c index 69877a4..4726aaf 100644 --- a/lib/librte_vhost/vhost_user.c +++ b/lib/librte_vhost/vhost_user.c @@ -691,14 +691,18 @@ vhost_user_set_vring_kick(struct virtio_net *dev, struct VhostUserMsg *pmsg) close(vq->kickfd); vq->kickfd = file.fd; - if (virtio_is_ready(dev) && !(dev->flags & VIRTIO_DEV_RUNNING)) { - if (dev->dequeue_zero_copy) { - RTE_LOG(INFO, VHOST_CONFIG, - "dequeue zero copy is enabled\n"); - } + if (virtio_is_ready(dev)) { + dev->flags |= VIRTIO_DEV_READY; + + if (!(dev->flags & VIRTIO_DEV_RUNNING)) { + if (dev->dequeue_zero_copy) { + RTE_LOG(INFO, VHOST_CONFIG, + "dequeue zero copy is enabled\n"); + } - if (notify_ops->new_device(dev->vid) == 0) - dev->flags |= VIRTIO_DEV_RUNNING; + if (notify_ops->new_device(dev->vid) == 0) + dev->flags |= VIRTIO_DEV_RUNNING; + } } } @@ -733,6 +737,8 @@ vhost_user_get_vring_base(struct virtio_net *dev, notify_ops->destroy_device(dev->vid); } + dev->flags &= ~VIRTIO_DEV_READY; + /* Here we are safe to get the last used index */ state->num = vq->last_used_idx; -- 2.9.3