FSTATE_END_OF_FRAME
fstate->fsmstate = FSTATE_END_OF_FRAME;
fsmstate = FSTATE_END_OF_FRAME;
fsmstate = FSTATE_END_OF_FRAME;
case FSTATE_END_OF_FRAME:
result = (fsmstate == FSTATE_END_OF_FRAME) ? FR_IDLE : FR_INPROGRESS;
#define deframe_isclear(fs) ((fs)->fsmstate == FSTATE_END_OF_FRAME)