-#define gtpu_local_csum_is_valid(_b) \
- ((_b->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT \
- || _b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) != 0)
+#define gtpu_local_csum_is_valid(_b) \
+ ((_b->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT || \
+ (_b->flags & VNET_BUFFER_F_OFFLOAD && \
+ vnet_buffer2 (_b)->oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM)) != 0)