[Qemu-devel] [PATCH v12 3/7] vhost: rename VHOST_RESET_OWNER to VHOST_RESET_DEVICE

[Yuanhan Liu]

Quote from Michael:

    > Hi Michael,
    >
    > I'm wondering why we need a payload here, as we don't do that for
    > VHOST_SET_OWNER. I mean, stopping one or few queue pairs when a
    > connect is about to be close doesn't make sense to me. Instead,
    > we should clean up all queue pair when VHOST_RESET_OWNER message
    > is received, right?

    We really should rename VHOST_RESET_OWNER to VHOST_RESET_DEVICE.

http://lists.nongnu.org/archive/html/qemu-devel/2015-09/msg00050.html

To make it sound clear that it's a per-device message, instead of per-queue
or something else.

Suggested-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Yuanhan Liu <address@hidden>
Reviewed-by: Marcel Apfelbaum <address@hidden>
Tested-by: Marcel Apfelbaum <address@hidden>
---
 docs/specs/vhost-user.txt   | 4 ++--
 hw/net/vhost_net.c          | 2 +-
 hw/virtio/vhost-user.c      | 6 +++---
 linux-headers/linux/vhost.h | 2 +-
 tests/vhost-user-test.c     | 2 +-
 5 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/docs/specs/vhost-user.txt b/docs/specs/vhost-user.txt
index eec3251..af4b1b9 100644
--- a/docs/specs/vhost-user.txt
+++ b/docs/specs/vhost-user.txt
@@ -194,10 +194,10 @@ Message types
       as an owner of the session. This can be used on the Slave as a
       "session start" flag.
 
- * VHOST_USER_RESET_OWNER
+ * VHOST_USER_RESET_DEVICE
 
       Id: 4
-      Equivalent ioctl: VHOST_RESET_OWNER
+      Equivalent ioctl: VHOST_RESET_DEVICE
       Master payload: N/A
 
       Issued when a new connection is about to be closed. The Master will no
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index 9d32d76..b7d29b7 100644
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -287,7 +287,7 @@ static void vhost_net_stop_one(struct vhost_net *net,
     } else if (net->nc->info->type == NET_CLIENT_OPTIONS_KIND_VHOST_USER) {
         for (file.index = 0; file.index < net->dev.nvqs; ++file.index) {
             const VhostOps *vhost_ops = net->dev.vhost_ops;
-            int r = vhost_ops->vhost_call(&net->dev, VHOST_RESET_OWNER,
+            int r = vhost_ops->vhost_call(&net->dev, VHOST_RESET_DEVICE,
                                           NULL);
             assert(r >= 0);
         }
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index 7fe35c6..9cb2f52 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -32,7 +32,7 @@ typedef enum VhostUserRequest {
     VHOST_USER_GET_FEATURES = 1,
     VHOST_USER_SET_FEATURES = 2,
     VHOST_USER_SET_OWNER = 3,
-    VHOST_USER_RESET_OWNER = 4,
+    VHOST_USER_RESET_DEVICE = 4,
     VHOST_USER_SET_MEM_TABLE = 5,
     VHOST_USER_SET_LOG_BASE = 6,
     VHOST_USER_SET_LOG_FD = 7,
@@ -98,7 +98,7 @@ static unsigned long int 
ioctl_to_vhost_user_request[VHOST_USER_MAX] = {
     VHOST_GET_FEATURES,     /* VHOST_USER_GET_FEATURES */
     VHOST_SET_FEATURES,     /* VHOST_USER_SET_FEATURES */
     VHOST_SET_OWNER,        /* VHOST_USER_SET_OWNER */
-    VHOST_RESET_OWNER,      /* VHOST_USER_RESET_OWNER */
+    VHOST_RESET_DEVICE,      /* VHOST_USER_RESET_DEVICE */
     VHOST_SET_MEM_TABLE,    /* VHOST_USER_SET_MEM_TABLE */
     VHOST_SET_LOG_BASE,     /* VHOST_USER_SET_LOG_BASE */
     VHOST_SET_LOG_FD,       /* VHOST_USER_SET_LOG_FD */
@@ -222,7 +222,7 @@ static int vhost_user_call(struct vhost_dev *dev, unsigned 
long int request,
         break;
 
     case VHOST_USER_SET_OWNER:
-    case VHOST_USER_RESET_OWNER:
+    case VHOST_USER_RESET_DEVICE:
         break;
 
     case VHOST_USER_SET_MEM_TABLE:
diff --git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h
index ead86db..14a0160 100644
--- a/linux-headers/linux/vhost.h
+++ b/linux-headers/linux/vhost.h
@@ -78,7 +78,7 @@ struct vhost_memory {
 #define VHOST_SET_OWNER _IO(VHOST_VIRTIO, 0x01)
 /* Give up ownership, and reset the device to default values.
  * Allows subsequent call to VHOST_OWNER_SET to succeed. */
-#define VHOST_RESET_OWNER _IO(VHOST_VIRTIO, 0x02)
+#define VHOST_RESET_DEVICE _IO(VHOST_VIRTIO, 0x02)
 
 /* Set up/modify memory layout */
 #define VHOST_SET_MEM_TABLE    _IOW(VHOST_VIRTIO, 0x03, struct vhost_memory)
diff --git a/tests/vhost-user-test.c b/tests/vhost-user-test.c
index 75fedf0..e301db7 100644
--- a/tests/vhost-user-test.c
+++ b/tests/vhost-user-test.c
@@ -58,7 +58,7 @@ typedef enum VhostUserRequest {
     VHOST_USER_GET_FEATURES = 1,
     VHOST_USER_SET_FEATURES = 2,
     VHOST_USER_SET_OWNER = 3,
-    VHOST_USER_RESET_OWNER = 4,
+    VHOST_USER_RESET_DEVICE = 4,
     VHOST_USER_SET_MEM_TABLE = 5,
     VHOST_USER_SET_LOG_BASE = 6,
     VHOST_USER_SET_LOG_FD = 7,
-- 
1.9.0