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802.11: clean up/fix HT support

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This patch cleans up a number of things:
 * the unusable definition of the HT capabilities/HT information
   information elements
 * variable names that are hard to understand
 * mac80211: move ieee80211_handle_ht to ht.c and remove the unused
             enable_ht parameter
 * mac80211: fix bug with MCS rate 32 in ieee80211_handle_ht
 * mac80211: fix bug with casting the result of ieee80211_bss_get_ie
             to an information element _contents_ rather than the
             whole element, add size checking (another out-of-bounds
             access bug fixed!)
 * mac80211: remove some unused return values in favour of BUG_ON
             checking
 * a few minor other things

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2008-10-09 12:13:49 +02:00
committed by John W. Linville
parent 40333e4fb4
commit d9fe60dea7
23 changed files with 386 additions and 319 deletions
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15
include/net/wireless.h
View File

@@ -10,6 +10,7 @@
#include <linux/netdevice.h>
#include <linux/debugfs.h>
#include <linux/list.h>
#include <linux/ieee80211.h>
#include <net/cfg80211.h>
/**
@@ -133,23 +134,23 @@ struct ieee80211_rate {
};
/**
* struct ieee80211_ht_info - describing STA's HT capabilities
* struct ieee80211_sta_ht_cap - STA's HT capabilities
*
* This structure describes most essential parameters needed
* to describe 802.11n HT capabilities for an STA.
*
* @ht_supported: is HT supported by STA, 0: no, 1: yes
* @ht_supported: is HT supported by the STA
* @cap: HT capabilities map as described in 802.11n spec
* @ampdu_factor: Maximum A-MPDU length factor
* @ampdu_density: Minimum A-MPDU spacing
* @supp_mcs_set: Supported MCS set as described in 802.11n spec
* @mcs: Supported MCS rates
*/
struct ieee80211_ht_info {
struct ieee80211_sta_ht_cap {
u16 cap; /* use IEEE80211_HT_CAP_ */
u8 ht_supported;
bool ht_supported;
u8 ampdu_factor;
u8 ampdu_density;
u8 supp_mcs_set[16];
struct ieee80211_mcs_info mcs;
};
/**
@@ -173,7 +174,7 @@ struct ieee80211_supported_band {
enum ieee80211_band band;
int n_channels;
int n_bitrates;
struct ieee80211_ht_info ht_info;
struct ieee80211_sta_ht_cap ht_cap;
};
/**