[ovs-dev] [PATCH] ovn: fix tunnel id overflow

[Wei Li]

Need to check tnlid dosen't exceed max and wrap it when it dose.

Signed-off-by: Wei Li <liwei at anbutu.com>
---
 ovn/northd/ovn-northd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ovn/northd/ovn-northd.c b/ovn/northd/ovn-northd.c
index 396381049..f286322b1 100644
--- a/ovn/northd/ovn-northd.c
+++ b/ovn/northd/ovn-northd.c
@@ -298,7 +298,7 @@ allocate_tnlid(struct hmap *set, const char *name, uint32_t max,
 {
     for (uint32_t tnlid = *hint + 1; tnlid != *hint;
          tnlid = tnlid + 1 <= max ? tnlid + 1 : 1) {
-        if (!tnlid_in_use(set, tnlid)) {
+        if (tnlid <= max && !tnlid_in_use(set, tnlid)) {
             add_tnlid(set, tnlid);
             *hint = tnlid;
             return tnlid;
-- 
2.16.3