179f831bc3
Generic code to walk through the fields in a radiotap header, accounting for nasties like extended "field present" bitfields and alignment rules Signed-off-by: Andy Green <andy@warmcat.com> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
#ifndef __NET_CFG80211_H
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#define __NET_CFG80211_H
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#include <linux/netlink.h>
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#include <linux/skbuff.h>
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#include <net/genetlink.h>
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/*
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* 802.11 configuration in-kernel interface
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*
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* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
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*/
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/* Radiotap header iteration
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* implemented in net/wireless/radiotap.c
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* docs in Documentation/networking/radiotap-headers.txt
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*/
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/**
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* struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args
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* @rtheader: pointer to the radiotap header we are walking through
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* @max_length: length of radiotap header in cpu byte ordering
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* @this_arg_index: IEEE80211_RADIOTAP_... index of current arg
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* @this_arg: pointer to current radiotap arg
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* @arg_index: internal next argument index
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* @arg: internal next argument pointer
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* @next_bitmap: internal pointer to next present u32
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* @bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present
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*/
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struct ieee80211_radiotap_iterator {
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struct ieee80211_radiotap_header *rtheader;
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int max_length;
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int this_arg_index;
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u8 *this_arg;
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int arg_index;
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u8 *arg;
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__le32 *next_bitmap;
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u32 bitmap_shifter;
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};
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extern int ieee80211_radiotap_iterator_init(
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struct ieee80211_radiotap_iterator *iterator,
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struct ieee80211_radiotap_header *radiotap_header,
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int max_length);
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extern int ieee80211_radiotap_iterator_next(
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struct ieee80211_radiotap_iterator *iterator);
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/* from net/wireless.h */
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struct wiphy;
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/**
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* struct cfg80211_ops - backend description for wireless configuration
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*
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* This struct is registered by fullmac card drivers and/or wireless stacks
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* in order to handle configuration requests on their interfaces.
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*
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* All callbacks except where otherwise noted should return 0
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* on success or a negative error code.
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*
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* All operations are currently invoked under rtnl for consistency with the
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* wireless extensions but this is subject to reevaluation as soon as this
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* code is used more widely and we have a first user without wext.
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*
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* @add_virtual_intf: create a new virtual interface with the given name
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*
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* @del_virtual_intf: remove the virtual interface determined by ifindex.
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*/
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struct cfg80211_ops {
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int (*add_virtual_intf)(struct wiphy *wiphy, char *name,
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unsigned int type);
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int (*del_virtual_intf)(struct wiphy *wiphy, int ifindex);
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};
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#endif /* __NET_CFG80211_H */
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