[PATCH 01/10] migration/rdma: Introduce RDMA_CONTROL_NUM

Introduce this to say how many control messages we have.  We did it because
we're going to remove the last one (RDMA_CONTROL_UNREGISTER_FINISHED) soon.

Signed-off-by: Peter Xu <[email protected]>
---
 migration/rdma.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/migration/rdma.c b/migration/rdma.c
index 438419d189..62a509b236 100644
--- a/migration/rdma.c
+++ b/migration/rdma.c
@@ -144,6 +144,7 @@ enum {
     RDMA_CONTROL_REGISTER_FINISHED,   /* current iteration finished */
     RDMA_CONTROL_UNREGISTER_REQUEST,  /* dynamic UN-registration */
     RDMA_CONTROL_UNREGISTER_FINISHED, /* unpinning finished */
+    RDMA_CONTROL_NUM,
 };
 
 
@@ -235,7 +236,7 @@ static const char *control_desc(unsigned int rdma_control)
         [RDMA_CONTROL_UNREGISTER_FINISHED] = "UNREGISTER FINISHED",
     };
 
-    if (rdma_control > RDMA_CONTROL_UNREGISTER_FINISHED) {
+    if (rdma_control >= RDMA_CONTROL_NUM) {
         return "??BAD CONTROL VALUE??";
     }
 
-- 
2.54.0