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From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: dev@dpdk.org, matan@mellanox.com, xiao.w.wang@intel.com,
	zhihong.wang@intel.com, xiaolong.ye@intel.com,
	chenbo.xia@intel.com, david.marchand@redhat.com,
	amorenoz@redhat.com, shreyansh.jain@nxp.com,
	viacheslavo@mellanox.com, hemant.agrawal@nxp.com,
	sachin.saxena@nxp.com
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Subject: [dpdk-dev] [PATCH 10/14] vhost: introduce wrappers for some vDPA ops
Date: Thu, 11 Jun 2020 23:37:44 +0200
Message-ID: <20200611213748.1967029-11-maxime.coquelin@redhat.com> (raw)
In-Reply-To: <20200611213748.1967029-1-maxime.coquelin@redhat.com>

This patch is preliminary work to make the vDPA device
structure opaque to the user application. Some callbacks
of the vDPA devices are used to query capabilities before
attaching to a Vhost port. This patch introduces wrappers
for these ops.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 lib/librte_vhost/rte_vdpa.h            | 52 ++++++++++++++++++++++++++
 lib/librte_vhost/rte_vhost_version.map |  3 ++
 lib/librte_vhost/vdpa.c                | 28 ++++++++++++++
 3 files changed, 83 insertions(+)

diff --git a/lib/librte_vhost/rte_vdpa.h b/lib/librte_vhost/rte_vdpa.h
index 011befdc71..e830014d5a 100644
--- a/lib/librte_vhost/rte_vdpa.h
+++ b/lib/librte_vhost/rte_vdpa.h
@@ -185,4 +185,56 @@ rte_vhost_host_notifier_ctrl(int vid, bool enable);
 __rte_experimental
 int
 rte_vdpa_relay_vring_used(int vid, uint16_t qid, void *vring_m);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Get number of queue pairs supported by the vDPA device
+ *
+ * @param dev
+ *  vDP device pointer
+ * @param queue_num
+ *  pointer on where the number of queue is stored
+ * @return
+ *  0 on success, -1 on failure
+ */
+__rte_experimental
+int
+rte_vdpa_get_queue_num(struct rte_vdpa_device *dev, uint32_t *queue_num);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Get the Virtio features supported by the vDPA device
+ *
+ * @param dev
+ *  vDP device pointer
+ * @param features
+ *  pointer on where the supported features are stored
+ * @return
+ *  0 on success, -1 on failure
+ */
+__rte_experimental
+int
+rte_vdpa_get_features(struct rte_vdpa_device *dev, uint64_t *features);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Get the Vhost-user protocol features supported by the vDPA device
+ *
+ * @param dev
+ *  vDP device pointer
+ * @param features
+ *  pointer on where the supported protocol features are stored
+ * @return
+ *  0 on success, -1 on failure
+ */
+__rte_experimental
+int
+rte_vdpa_get_protocol_features(struct rte_vdpa_device *dev, uint64_t *features);
+
 #endif /* _RTE_VDPA_H_ */
diff --git a/lib/librte_vhost/rte_vhost_version.map b/lib/librte_vhost/rte_vhost_version.map
index 27d63ce6fe..6c74a3ec4f 100644
--- a/lib/librte_vhost/rte_vhost_version.map
+++ b/lib/librte_vhost/rte_vhost_version.map
@@ -67,4 +67,7 @@ EXPERIMENTAL {
 	rte_vhost_slave_config_change;
 	rte_vdpa_find_device_by_name;
 	rte_vdpa_get_rte_device;
+	rte_vdpa_get_queue_num;
+	rte_vdpa_get_features;
+	rte_vdpa_get_protocol_features;
 };
diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c
index 8f4778e2fa..f00544b3ea 100644
--- a/lib/librte_vhost/vdpa.c
+++ b/lib/librte_vhost/vdpa.c
@@ -229,6 +229,34 @@ rte_vdpa_relay_vring_used(int vid, uint16_t qid, void *vring_m)
 	return -1;
 }
 
+int
+rte_vdpa_get_queue_num(struct rte_vdpa_device *dev, uint32_t *queue_num)
+{
+	if (dev == NULL || dev->ops == NULL || dev->ops->get_queue_num == NULL)
+		return -1;
+
+	return dev->ops->get_queue_num(dev, queue_num);
+}
+
+int
+rte_vdpa_get_features(struct rte_vdpa_device *dev, uint64_t *features)
+{
+	if (dev == NULL || dev->ops == NULL || dev->ops->get_features == NULL)
+		return -1;
+
+	return dev->ops->get_features(dev, features);
+}
+
+int
+rte_vdpa_get_protocol_features(struct rte_vdpa_device *dev, uint64_t *features)
+{
+	if (dev == NULL || dev->ops == NULL ||
+			dev->ops->get_protocol_features == NULL)
+		return -1;
+
+	return dev->ops->get_protocol_features(dev, features);
+}
+
 static int
 vdpa_dev_match(struct rte_vdpa_device *dev,
 	      const struct rte_device *rte_dev)
-- 
2.26.2


  parent reply	other threads:[~2020-06-11 21:39 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-11 21:37 [dpdk-dev] [PATCH 00/14] vDPA API and framework rework Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 01/14] bus/dpaa: fix null pointer dereference Maxime Coquelin
2020-06-12  9:48   ` Gaëtan Rivet
2020-06-11 21:37 ` [dpdk-dev] [PATCH 02/14] bus/fslmc: " Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 03/14] vhost: introduce vDPA devices class Maxime Coquelin
2020-06-12 12:37   ` Gaëtan Rivet
2020-06-15  9:15     ` Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 04/14] vhost: make vDPA framework bus agnostic Maxime Coquelin
2020-06-12 12:46   ` Gaëtan Rivet
2020-06-15  9:17     ` Maxime Coquelin
2020-06-19 11:14   ` Adrian Moreno
2020-06-19 15:11     ` Maxime Coquelin
2020-06-22  9:49       ` Adrian Moreno
2020-06-22 12:34         ` Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 05/14] vhost: replace device ID in vDPA ops Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 06/14] vhost: replace vDPA device ID in Vhost Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 07/14] vhost: replace device ID in applications Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 08/14] vhost: remove useless vDPA API Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 09/14] vhost: use linked-list for vDPA devices Maxime Coquelin
2020-06-11 21:37 ` Maxime Coquelin [this message]
2020-06-11 21:37 ` [dpdk-dev] [PATCH 11/14] examples/vdpa: use new wrappers instead of ops Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 12/14] examples/vdpa: remove useless device count Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 13/14] vhost: remove vDPA device count API Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 14/14] vhost: split vDPA header file Maxime Coquelin
2020-06-12  9:38 ` [dpdk-dev] [PATCH 00/14] vDPA API and framework rework Gaëtan Rivet

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