ddp_hdr
extern void interpret_at(int, struct ddp_hdr *, int);
extern void interpret_rtmp(int, struct ddp_hdr *, int);
extern void interpret_aecho(int, struct ddp_hdr *, int);
extern void interpret_atp(int, struct ddp_hdr *, int);
interpret_aecho(int flags, struct ddp_hdr *ddp, int len)
interpret_at(int flags, struct ddp_hdr *ddp, int len)
interpret_atp(int flags, struct ddp_hdr *ddp, int len)
interpret_at(flags, (struct ddp_hdr *)data, len);
interpret_at(flags, (struct ddp_hdr *)data, len);
interpret_rtmp(int flags, struct ddp_hdr *ddp, int len)