struct iwinfo_ops {
int (*channel)(const char *, int *);
int (*frequency)(const char *, int *);
+ int (*frequency_offset)(const char *, int *);
int (*txpower)(const char *, int *);
+ int (*txpower_offset)(const char *, int *);
int (*bitrate)(const char *, int *);
int (*signal)(const char *, int *);
int (*noise)(const char *, int *);