lib: improve sanity check on vrf backend value

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>

diff --git a/lib/vrf.c b/lib/vrf.c
index fc5aa8f2b6af707be0d14335877e8edeb1adaa8b..14f965ac8512975ce0d7eb802b52d1238eb2e879 100644 (file)
--- a/lib/vrf.c
+++ b/lib/vrf.c
@@ -595,7 +595,7 @@ int vrf_get_backend(void)
 
 int vrf_configure_backend(enum vrf_backend_type backend)
 {
-       if (backend > VRF_BACKEND_MAX)
+       if (backend < 0 || backend >= VRF_BACKEND_MAX)
                return -1;
 
        vrf_backend = backend;