S_PACKETDROPS
#define V_PACKETDROPS(x) ((x) << S_PACKETDROPS)
#define G_PACKETDROPS(x) (((x) >> S_PACKETDROPS) & M_PACKETDROPS)
#define V_PACKETDROPS(x) ((x) << S_PACKETDROPS)
#define G_PACKETDROPS(x) (((x) >> S_PACKETDROPS) & M_PACKETDROPS)