radiotap_iter.h

#ifndef __RADIOTAP_ITER_H
#define __RADIOTAP_ITER_H

#include <stdint.h>
#include "radiotap.h"

/* Radiotap header iteration
 *   implemented in radiotap.c
 */

struct radiotap_override {
        uint8_t field;
        uint8_t align:4, size:4;
};

struct radiotap_align_size {
        uint8_t align:4, size:4;
};

struct ieee80211_radiotap_namespace {
        const struct radiotap_align_size *align_size;
        int n_bits;
        uint32_t oui;
        uint8_t subns;
};

struct ieee80211_radiotap_vendor_namespaces {
        const struct ieee80211_radiotap_namespace *ns;
        int n_ns;
};

struct ieee80211_radiotap_iterator {
        struct ieee80211_radiotap_header *_rtheader;
        const struct ieee80211_radiotap_vendor_namespaces *_vns;
        const struct ieee80211_radiotap_namespace *current_namespace;

        unsigned char *_arg, *_next_ns_data;
        uint32_t *_next_bitmap;

        unsigned char *this_arg;
#ifdef RADIOTAP_SUPPORT_OVERRIDES
        const struct radiotap_override *overrides;
        int n_overrides;
#endif
        int this_arg_index;
        int this_arg_size;

        int is_radiotap_ns;

        int _max_length;
        int _arg_index;
        uint32_t _bitmap_shifter;
        int _reset_on_ext;
};

extern int ieee80211_radiotap_iterator_init(
        struct ieee80211_radiotap_iterator *iterator,
        struct ieee80211_radiotap_header *radiotap_header,
        int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns);

extern int ieee80211_radiotap_iterator_next(
        struct ieee80211_radiotap_iterator *iterator);

#endif /* __RADIOTAP_ITER_H */