LAYER_FLOWCFG_MASK
#define LAYER_FLOWCFG(x) (((x) & LAYER_FLOWCFG_MASK) << 1)
val &= ~LAYER_FLOWCFG(LAYER_FLOWCFG_MASK);
LAYER_ENABLE | LAYER_FLOWCFG(LAYER_FLOWCFG_MASK),