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From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
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Cc: Maxime Coquelin <maxime.coquelin@redhat.com>,
Harris James R <james.r.harris@intel.com>,
Liu Changpeng <changpeng.liu@intel.com>,
Yuanhan Liu <yuanhan.liu@linux.intel.com>
Date: Thu, 23 Mar 2017 15:10:43 +0800
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Subject: [dpdk-dev] [PATCH v2 06/22] vhost: introduce API to fetch
negotiated features
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Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
---
lib/librte_vhost/rte_vhost_version.map | 2 ++
lib/librte_vhost/rte_virtio_net.h | 10 ++++++++++
lib/librte_vhost/vhost.c | 12 ++++++++++++
3 files changed, 24 insertions(+)
diff --git a/lib/librte_vhost/rte_vhost_version.map b/lib/librte_vhost/rte_vhost_version.map
index 664a5f3..e21b788 100644
--- a/lib/librte_vhost/rte_vhost_version.map
+++ b/lib/librte_vhost/rte_vhost_version.map
@@ -37,5 +37,7 @@ DPDK_17.05 {
rte_vhost_driver_set_features;
rte_vhost_get_mem_table;
rte_vhost_get_mtu;
+ rte_vhost_get_negotiated_features
+ rte_vhost_get_vhost_memory;
} DPDK_16.07;
diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
index 5a91f97..57e57e3 100644
--- a/lib/librte_vhost/rte_virtio_net.h
+++ b/lib/librte_vhost/rte_virtio_net.h
@@ -154,6 +154,16 @@ struct virtio_net_device_ops {
*/
uint64_t rte_vhost_driver_get_features(const char *path);
+/**
+ * Get the feature bits after negotiation
+ *
+ * @param vid
+ * Vhost device ID
+ * @return
+ * Negotiated feature bits on success, 0 on failure
+ */
+uint64_t rte_vhost_get_negotiated_features(int vid);
+
/* Register callbacks. */
int rte_vhost_driver_callback_register(const char *path,
struct virtio_net_device_ops const * const ops);
diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
index 2b41652..08dccfb 100644
--- a/lib/librte_vhost/vhost.c
+++ b/lib/librte_vhost/vhost.c
@@ -359,6 +359,18 @@ struct virtio_net *
return 0;
}
+uint64_t
+rte_vhost_get_negotiated_features(int vid)
+{
+ struct virtio_net *dev;
+
+ dev = get_device(vid);
+ if (!dev)
+ return 0;
+
+ return dev->features;
+}
+
int
rte_vhost_get_mem_table(int vid, struct rte_vhost_memory **mem)
{
--
1.9.0