STRUCT IEEE80211_RAD(9)                 Utility functions                 STRUCT IEEE80211_RAD(9)



NAME
       struct_ieee80211_radiotap_iterator - tracks walk thru present radiotap args

SYNOPSIS
       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;
         unsigned char * _next_ns_data;
         __le32 * _next_bitmap;
         unsigned char * this_arg;
         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;
       };

MEMBERS
       _rtheader
           pointer to the radiotap header we are walking through

       _vns
           vendor namespace definitions

       current_namespace
           pointer to the current namespace definition (or internally NULL if the current
           namespace is unknown)

       _arg
           next argument pointer

       _next_ns_data
           beginning of the next namespace's data

       _next_bitmap
           internal pointer to next present u32

       this_arg
           pointer to current radiotap arg; it is valid after each call to
           ieee80211_radiotap_iterator_next but also after ieee80211_radiotap_iterator_init where
           it will point to the beginning of the actual data portion

       this_arg_index
           index of current arg, valid after each successful call to
           ieee80211_radiotap_iterator_next

       this_arg_size
           length of the current arg, for convenience

       is_radiotap_ns
           indicates whether the current namespace is the default radiotap namespace or not

       _max_length
           length of radiotap header in cpu byte ordering

       _arg_index
           next argument index

       _bitmap_shifter
           internal shifter for curr u32 bitmap, b0 set == arg present

       _reset_on_ext
           internal; reset the arg index to 0 when going to the next bitmap word

DESCRIPTION
       Describes the radiotap parser state. Fields prefixed with an underscore must not be used
       by users of the parser, only by the parser internally.

AUTHOR
       Johannes Berg <johannes AT sipsolutions.net>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   STRUCT IEEE80211_RAD(9)