'\" t
.\"     Title: struct ieee80211_radiotap_iterator
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Utility functions
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "STRUCT IEEE80211_RAD" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Utility functions"
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.SH "NAME"
struct_ieee80211_radiotap_iterator \- tracks walk thru present radiotap args
.SH "SYNOPSIS"
.sp
.nf
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;
};  
.fi
.SH "MEMBERS"
.PP
_rtheader
.RS 4
pointer to the radiotap header we are walking through
.RE
.PP
_vns
.RS 4
vendor namespace definitions
.RE
.PP
current_namespace
.RS 4
pointer to the current namespace definition (or internally
\fBNULL\fR
if the current namespace is unknown)
.RE
.PP
_arg
.RS 4
next argument pointer
.RE
.PP
_next_ns_data
.RS 4
beginning of the next namespace\*(Aqs data
.RE
.PP
_next_bitmap
.RS 4
internal pointer to next present u32
.RE
.PP
this_arg
.RS 4
pointer to current radiotap arg; it is valid after each call to
\fBieee80211_radiotap_iterator_next\fR
but also after
\fBieee80211_radiotap_iterator_init\fR
where it will point to the beginning of the actual data portion
.RE
.PP
this_arg_index
.RS 4
index of current arg, valid after each successful call to
\fBieee80211_radiotap_iterator_next\fR
.RE
.PP
this_arg_size
.RS 4
length of the current arg, for convenience
.RE
.PP
is_radiotap_ns
.RS 4
indicates whether the current namespace is the default radiotap namespace or not
.RE
.PP
_max_length
.RS 4
length of radiotap header in cpu byte ordering
.RE
.PP
_arg_index
.RS 4
next argument index
.RE
.PP
_bitmap_shifter
.RS 4
internal shifter for curr u32 bitmap, b0 set == arg present
.RE
.PP
_reset_on_ext
.RS 4
internal; reset the arg index to 0 when going to the next bitmap word
.RE
.SH "DESCRIPTION"
.PP
Describes the radiotap parser state\&. Fields prefixed with an underscore must not be used by users of the parser, only by the parser internally\&.
.SH "AUTHOR"
.PP
\fBJohannes Berg\fR <\&johannes@sipsolutions.net\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br