--- sys/dev/vmware/vmxnet3/if_vmx.c	(revision 350104)
+++ sys/dev/vmware/vmxnet3/if_vmx.c	(working copy)
@@ -1393,10 +1393,11 @@ vmxnet3_isc_txd_credits_update(void *vsc, uint16_t
 			return (1);
 		vmxnet3_barrier(sc, VMXNET3_BARRIER_RD);
 
-		if (++txc->vxcr_next == txc->vxcr_ndesc) {
+		if (txc->vxcr_next + 1 == txc->vxcr_ndesc) {
 			txc->vxcr_next = 0;
 			txc->vxcr_gen ^= 1;
-		}
+		} else
+			txc->vxcr_next++;
 
 		if (txcd->eop_idx < txr->vxtxr_next)
 			processed += txr->vxtxr_ndesc -