From: JinYu <jin.yu@intel.com>
To: dev@dpdk.org
Cc: changpeng.liu@intel.com, maxime.coquelin@redhat.com,
tiwei.bie@intel.com, zhihong.wang@intel.com,
JinYu <jin.yu@intel.com>, Lin Li <lilin24@baidu.com>,
Xun Ni <nixun@baidu.com>, Yu Zhang <zhangyu31@baidu.com>
Subject: [dpdk-dev] [PATCH v7 07/11] vhost: add APIs for user getting inflight ring
Date: Tue, 17 Sep 2019 22:52:30 +0800 [thread overview]
Message-ID: <20190917145234.16951-8-jin.yu@intel.com> (raw)
In-Reply-To: <20190917145234.16951-1-jin.yu@intel.com>
This patch introduces two APIs. one is for getting inflgiht
ring and the other is for getting base.
Signed-off-by: Lin Li <lilin24@baidu.com>
Signed-off-by: Xun Ni <nixun@baidu.com>
Signed-off-by: Yu Zhang <zhangyu31@baidu.com>
Signed-off-by: Jin Yu <jin.yu@intel.com>
---
lib/librte_vhost/rte_vhost.h | 40 ++++++++++++++++++++++++
lib/librte_vhost/vhost.c | 59 ++++++++++++++++++++++++++++++++++++
2 files changed, 99 insertions(+)
diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
index f0e86f5e2..8b6435d0d 100644
--- a/lib/librte_vhost/rte_vhost.h
+++ b/lib/librte_vhost/rte_vhost.h
@@ -693,6 +693,23 @@ int rte_vhost_get_mem_table(int vid, struct rte_vhost_memory **mem);
int rte_vhost_get_vhost_vring(int vid, uint16_t vring_idx,
struct rte_vhost_vring *vring);
+/**
+ * Get guest inflight vring info, including inflight ring and resubmit list.
+ *
+ * @param vid
+ * vhost device ID
+ * @param vring_idx
+ * vring index
+ * @param vring
+ * the structure to hold the requested inflight vring info
+ * @return
+ * 0 on success, -1 on failure
+ */
+__rte_experimental
+int
+rte_vhost_get_vhost_ring_inflight(int vid, uint16_t vring_idx,
+ struct rte_vhost_ring_inflight *vring);
+
/**
* Set split inflight descriptor.
*
@@ -867,6 +884,29 @@ int __rte_experimental
rte_vhost_get_vring_base(int vid, uint16_t queue_id,
uint16_t *last_avail_idx, uint16_t *last_used_idx);
+/**
+ * Get last_avail/last_used of the vhost virtqueue
+ *
+ * This function is designed for the reconnection and it's specific for
+ * the packed ring as we can get the two parameters from the inflight
+ * queueregion
+ *
+ * @param vid
+ * vhost device ID
+ * @param queue_id
+ * vhost queue index
+ * @param last_avail_idx
+ * vhost last_avail_idx to get
+ * @param last_used_idx
+ * vhost last_used_idx to get
+ * @return
+ * 0 on success, -1 on failure
+ */
+__rte_experimental
+int
+rte_vhost_get_vring_base_from_inflight(int vid,
+ uint16_t queue_id, uint16_t *last_avail_idx, uint16_t *last_used_idx);
+
/**
* Set last_avail/used_idx of the vhost virtqueue
*
diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
index 44ae87d4f..95f99ea51 100644
--- a/lib/librte_vhost/vhost.c
+++ b/lib/librte_vhost/vhost.c
@@ -783,6 +783,41 @@ rte_vhost_get_vhost_vring(int vid, uint16_t vring_idx,
return 0;
}
+int
+rte_vhost_get_vhost_ring_inflight(int vid, uint16_t vring_idx,
+ struct rte_vhost_ring_inflight *vring)
+{
+ struct virtio_net *dev;
+ struct vhost_virtqueue *vq;
+
+ dev = get_device(vid);
+ if (unlikely(!dev))
+ return -1;
+
+ if (vring_idx >= VHOST_MAX_VRING)
+ return -1;
+
+ vq = dev->virtqueue[vring_idx];
+ if (unlikely(!vq))
+ return -1;
+
+ if (vq_is_packed(dev)) {
+ if (unlikely(!vq->inflight_packed))
+ return -1;
+
+ vring->inflight_packed = vq->inflight_packed;
+ } else {
+ if (unlikely(!vq->inflight_split))
+ return -1;
+
+ vring->inflight_split = vq->inflight_split;
+ }
+
+ vring->resubmit_inflight = vq->resubmit_inflight;
+
+ return 0;
+}
+
int
rte_vhost_set_inflight_desc_split(int vid, uint16_t vring_idx,
uint16_t idx)
@@ -1249,6 +1284,30 @@ int rte_vhost_get_vring_base(int vid, uint16_t queue_id,
return 0;
}
+int
+rte_vhost_get_vring_base_from_inflight(int vid,
+ uint16_t queue_id, uint16_t *last_avail_idx, uint16_t *last_used_idx)
+{
+ struct rte_vhost_inflight_info_packed *inflight_info;
+ struct virtio_net *dev = get_device(vid);
+
+ if (dev == NULL || last_avail_idx == NULL || last_used_idx == NULL)
+ return -1;
+
+ if (!vq_is_packed(dev))
+ return -1;
+
+ inflight_info = dev->virtqueue[queue_id]->inflight_packed;
+ if (!inflight_info)
+ return -1;
+
+ *last_avail_idx = (inflight_info->old_used_wrap_counter << 15) |
+ inflight_info->old_used_idx;
+ *last_used_idx = *last_avail_idx;
+
+ return 0;
+}
+
int rte_vhost_set_vring_base(int vid, uint16_t queue_id,
uint16_t last_avail_idx, uint16_t last_used_idx)
{
--
2.17.2
next prev parent reply other threads:[~2019-09-17 7:10 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190829141224.49700>
2019-09-17 14:52 ` [dpdk-dev] [PATCH v7 00/11] vhost: support inflight share memory protocol feature JinYu
2019-09-17 14:52 ` [dpdk-dev] [PATCH v7 01/11] vhost: add the inflight description JinYu
2019-09-18 1:29 ` Tiwei Bie
2019-09-18 1:37 ` Yu, Jin
2019-09-17 14:52 ` [dpdk-dev] [PATCH v7 02/11] vhost: add packed ring JinYu
2019-09-17 14:52 ` [dpdk-dev] [PATCH v7 03/11] vhost: add the inflight structure JinYu
2019-09-17 14:52 ` [dpdk-dev] [PATCH v7 04/11] vhost: add two new messages to support a shared buffer JinYu
2019-09-17 12:55 ` Aaron Conole
2019-09-17 14:52 ` [dpdk-dev] [PATCH v7 05/11] vhost: checkout and cleanup the resubmit inflight information JinYu
2019-09-17 14:52 ` [dpdk-dev] [PATCH v7 06/11] vhost: add the APIs to operate inflight ring JinYu
2019-09-17 14:52 ` JinYu [this message]
2019-09-17 14:52 ` [dpdk-dev] [PATCH v7 08/11] vhost: fix vring functions to support packed ring JinYu
2019-09-18 5:47 ` Tiwei Bie
2019-09-17 14:52 ` [dpdk-dev] [PATCH v7 09/11] vhost: add an API for judging vq format JinYu
2019-09-17 14:52 ` [dpdk-dev] [PATCH v7 10/11] vhost: add APIs to rte_vhost version map JinYu
2019-09-18 6:05 ` Tiwei Bie
2019-09-18 6:31 ` Yu, Jin
2019-09-17 14:52 ` [dpdk-dev] [PATCH v7 11/11] vhost: add vhost-user-blk example which support inflight JinYu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190917145234.16951-8-jin.yu@intel.com \
--to=jin.yu@intel.com \
--cc=changpeng.liu@intel.com \
--cc=dev@dpdk.org \
--cc=lilin24@baidu.com \
--cc=maxime.coquelin@redhat.com \
--cc=nixun@baidu.com \
--cc=tiwei.bie@intel.com \
--cc=zhangyu31@baidu.com \
--cc=zhihong.wang@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).