[Qemu-devel] [PATCH RFC 09/14] vhost-user: add vhost_user to hold the chr

[marcandre.lureau@redhat.com]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Next patches will add more fields to the structure

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 hw/virtio/vhost-user.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index b2f46a9..2875b69 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -91,6 +91,10 @@ static VhostUserMsg m __attribute__ ((unused));
 /* The version of the protocol we support */
 #define VHOST_USER_VERSION    (0x1)
 
+struct vhost_user {
+    CharDriverState *chr;
+};
+
 static bool ioeventfd_enabled(void)
 {
     return kvm_enabled() && kvm_eventfds_enabled();
@@ -134,7 +138,8 @@ static VhostUserRequest vhost_user_request_translate(unsigned long int request)
 
 static int vhost_user_read(struct vhost_dev *dev, VhostUserMsg *msg)
 {
-    CharDriverState *chr = dev->opaque;
+    struct vhost_user *u = dev->opaque;
+    CharDriverState *chr = u->chr;
     uint8_t *p = (uint8_t *) msg;
     int r, size = VHOST_USER_HDR_SIZE;
 
@@ -181,7 +186,8 @@ fail:
 static int vhost_user_write(struct vhost_dev *dev, VhostUserMsg *msg,
                             int *fds, int fd_num)
 {
-    CharDriverState *chr = dev->opaque;
+    struct vhost_user *u = dev->opaque;
+    CharDriverState *chr = u->chr;
     int size = VHOST_USER_HDR_SIZE + msg->size;
 
     if (fd_num) {
@@ -358,11 +364,14 @@ end:
 static int vhost_user_init(struct vhost_dev *dev, void *opaque)
 {
     VhostUserMsg msg = { 0 };
+    struct vhost_user *u;
     int err;
 
     assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER);
 
-    dev->opaque = opaque;
+    u = g_new0(struct vhost_user, 1);
+    u->chr = opaque;
+    dev->opaque = u;
 
     msg.request = VHOST_USER_GET_FEATURES;
     msg.flags = VHOST_USER_VERSION;
@@ -413,8 +422,12 @@ static int vhost_user_init(struct vhost_dev *dev, void *opaque)
 
 static int vhost_user_cleanup(struct vhost_dev *dev)
 {
+    struct vhost_user *u;
+
     assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER);
 
+    u = dev->opaque;
+    g_free(u);
     dev->opaque = 0;
 
     return 0;
-- 
2.4.3