blob: 65e0ad6149a7ddc8b81c724162b07e016ec65886 [file] [log] [blame]
#ifndef REG_LIB_H
#define REG_LIB_H
#include <stdlib.h>
#include <linux/types.h>
#include "regdb.h"
/* Common regulatory structures, functions and helpers */
/* This matches the kernel's data structures */
struct ieee80211_freq_range {
__u32 start_freq_khz;
__u32 end_freq_khz;
__u32 max_bandwidth_khz;
};
struct ieee80211_power_rule {
__u32 max_antenna_gain;
__u32 max_eirp;
};
struct ieee80211_reg_rule {
struct ieee80211_freq_range freq_range;
struct ieee80211_power_rule power_rule;
__u32 flags;
};
struct ieee80211_regdomain {
__u32 n_reg_rules;
char alpha2[2];
struct ieee80211_reg_rule reg_rules[];
};
static inline int is_world_regdom(const char *alpha2)
{
if (alpha2[0] == '0' && alpha2[1] == '0')
return 1;
return 0;
}
static inline int isalpha_upper(char letter)
{
if (letter >= 'A' && letter <= 'Z')
return 1;
return 0;
}
static inline int is_alpha2(const char *alpha2)
{
if (isalpha_upper(alpha2[0]) && isalpha_upper(alpha2[1]))
return 1;
return 0;
}
/* Avoid stdlib */
static inline int is_len_2(const char *alpha2)
{
if (alpha2[0] == '\0' || (alpha2[1] == '\0'))
return 0;
if (alpha2[2] == '\0')
return 1;
return 0;
}
static inline int is_valid_regdom(const char *alpha2)
{
if (!is_len_2(alpha2))
return 0;
if (!is_alpha2(alpha2) && !is_world_regdom(alpha2))
return 0;
return 1;
}
static inline __u32 max(__u32 a, __u32 b)
{
return (a > b) ? a : b;
}
static inline __u32 min(__u32 a, __u32 b)
{
return (a > b) ? b : a;
}
void *crda_get_file_ptr(__u8 *db, int dblen, int structlen, __be32 ptr);
int crda_verify_db_signature(__u8 *db, int dblen, int siglen);
/* File reg db entry -> rd converstion utilities */
void reg_rule2rd(__u8 *db, int dblen,
__be32 ruleptr, struct ieee80211_reg_rule *rd_reg_rule);
struct ieee80211_regdomain *country2rd(__u8 *db, int dblen,
struct regdb_file_reg_country *country);
/* reg helpers */
int is_valid_reg_rule(const struct ieee80211_reg_rule *rule);
void print_reg_rule(struct ieee80211_reg_rule *rule);
void print_regdom(struct ieee80211_regdomain *rd);
#endif