const char *channel);
extern int ustcomm_unpack_channel_info(struct ustcomm_channel_info *ch_inf);
extern int ustcomm_pack_buffer_info(struct ustcomm_header *header,
struct ustcomm_buffer_info *buf_inf,
const char *channel);
extern int ustcomm_unpack_channel_info(struct ustcomm_channel_info *ch_inf);
extern int ustcomm_pack_buffer_info(struct ustcomm_header *header,
struct ustcomm_buffer_info *buf_inf,