[dpdk-dev] [RFC PATCH 1/6] lib/librte_vhost: add vhost_user private info structure
Fan Zhang
roy.fan.zhang at intel.com
Thu Nov 2 17:09:19 CET 2017
This patch adds a vhost_user_dev_priv structure and a vhost_user
message handler function prototype to vhost_user. This allows
different types of devices to add private information and their
device-specific vhost-user message function handlers to
virtio_net structure. The change to vhost_user_msg_handler is
also added to call the device-specific message handler.
Signed-off-by: Fan Zhang <roy.fan.zhang at intel.com>
---
lib/librte_vhost/vhost_user.c | 13 ++++++++++++-
lib/librte_vhost/vhost_user.h | 7 +++++++
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 76c4eec..da9ee29 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -1324,7 +1324,18 @@ vhost_user_msg_handler(int vid, int fd)
break;
default:
- ret = -1;
+ if (!dev->private_data)
+ ret = -1;
+ else {
+ struct vhost_user_dev_priv *priv = dev->private_data;
+
+ if (!priv->vhost_user_msg_handler)
+ ret = -1;
+ else {
+ ret = (*priv->vhost_user_msg_handler)(dev,
+ &msg, fd);
+ }
+ }
break;
}
diff --git a/lib/librte_vhost/vhost_user.h b/lib/librte_vhost/vhost_user.h
index 76d9fe2..4052dbf 100644
--- a/lib/librte_vhost/vhost_user.h
+++ b/lib/librte_vhost/vhost_user.h
@@ -137,6 +137,13 @@ typedef struct VhostUserMsg {
/* The version of the protocol we support */
#define VHOST_USER_VERSION 0x1
+typedef int (*msg_handler)(struct virtio_net *dev, struct VhostUserMsg *msg,
+ int fd);
+
+struct vhost_user_dev_priv {
+ msg_handler vhost_user_msg_handler;
+ char data[0];
+};
/* vhost_user.c */
int vhost_user_msg_handler(int vid, int fd);
--
2.9.5
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