[PATCH] event/dlb2: fix QID inflight exploit

[Timothy McDaniel]

If QID inflights is set to an invalid value it can cause the
PMD to hang.  This commit adds checks to make sure that the
value is valid before programming the hardware.

Fixes: 1857f1922ce2 ("event/dlb2: use new implementation of resource file")
Cc: stable at dpdk.org

Signed-off-by: Timothy McDaniel <timothy.mcdaniel at intel.com>
---
 drivers/event/dlb2/pf/base/dlb2_resource.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/event/dlb2/pf/base/dlb2_resource.c b/drivers/event/dlb2/pf/base/dlb2_resource.c
index d4c49c2992..548bebd068 100644
--- a/drivers/event/dlb2/pf/base/dlb2_resource.c
+++ b/drivers/event/dlb2/pf/base/dlb2_resource.c
@@ -3701,7 +3701,7 @@ dlb2_verify_create_ldb_queue_args(struct dlb2_hw *hw,
 		}
 	}
 
-	if (args->num_qid_inflights > 4096) {
+	if (args->num_qid_inflights < 1 || args->num_qid_inflights > 2048) {
 		resp->status = DLB2_ST_INVALID_QID_INFLIGHT_ALLOCATION;
 		return -EINVAL;
 	}
-- 
2.25.1