S_KEEPALIVEINTVL
#define V_KEEPALIVEINTVL(x) ((x) << S_KEEPALIVEINTVL)
#define G_KEEPALIVEINTVL(x) (((x) >> S_KEEPALIVEINTVL) & M_KEEPALIVEINTVL)
#define V_KEEPALIVEINTVL(x) ((x) << S_KEEPALIVEINTVL)
#define G_KEEPALIVEINTVL(x) (((x) >> S_KEEPALIVEINTVL) & M_KEEPALIVEINTVL)