X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fnet%2Fcfg80211.h;h=7edaef6b29d63b4c6a5fd7af2c4c45a0e1ce5098;hb=7616ee95f27a04fd5a6434e9ef4a82cec4b2807c;hp=783a11437a57ad9155e76e40f2838458ab2baaa9;hpb=704232c2718c9d4b3375ec15a14fc0397970c449;p=linux-2.6 diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 783a11437a..7edaef6b29 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -11,6 +11,44 @@ * Copyright 2006 Johannes Berg */ + +/* Radiotap header iteration + * implemented in net/wireless/radiotap.c + * docs in Documentation/networking/radiotap-headers.txt + */ +/** + * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args + * @rtheader: pointer to the radiotap header we are walking through + * @max_length: length of radiotap header in cpu byte ordering + * @this_arg_index: IEEE80211_RADIOTAP_... index of current arg + * @this_arg: pointer to current radiotap arg + * @arg_index: internal next argument index + * @arg: internal next argument pointer + * @next_bitmap: internal pointer to next present u32 + * @bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present + */ + +struct ieee80211_radiotap_iterator { + struct ieee80211_radiotap_header *rtheader; + int max_length; + int this_arg_index; + u8 *this_arg; + + int arg_index; + u8 *arg; + __le32 *next_bitmap; + u32 bitmap_shifter; +}; + +extern int ieee80211_radiotap_iterator_init( + struct ieee80211_radiotap_iterator *iterator, + struct ieee80211_radiotap_header *radiotap_header, + int max_length); + +extern int ieee80211_radiotap_iterator_next( + struct ieee80211_radiotap_iterator *iterator); + + /* from net/wireless.h */ struct wiphy; @@ -23,6 +61,10 @@ struct wiphy; * All callbacks except where otherwise noted should return 0 * on success or a negative error code. * + * All operations are currently invoked under rtnl for consistency with the + * wireless extensions but this is subject to reevaluation as soon as this + * code is used more widely and we have a first user without wext. + * * @add_virtual_intf: create a new virtual interface with the given name * * @del_virtual_intf: remove the virtual interface determined by ifindex.