extern int parse_chan_pair(char *str, struct list_head *chans, int pri,
int device, struct chan_opts *opts);
extern int open_chan(struct list_head *chans);
extern int parse_chan_pair(char *str, struct list_head *chans, int pri,
int device, struct chan_opts *opts);
extern int open_chan(struct list_head *chans);