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| author | Andriy Tkachuk <andrit@ukr.net> | 2010-01-20 13:55:06 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-01-22 16:11:27 -0500 |
| commit | d0dd2de0d055f0ffb1e2ecdc21380de9d12a85e2 (patch) | |
| tree | cb3d3e77e62c22032f0fac4c58e8f304f08f5061 /include/linux/ieee80211.h | |
| parent | ef15aac6073b27fd4f70007784d2d52ed394bf43 (diff) | |
| download | lwn-d0dd2de0d055f0ffb1e2ecdc21380de9d12a85e2.tar.gz lwn-d0dd2de0d055f0ffb1e2ecdc21380de9d12a85e2.zip | |
mac80211: Account HT Control field in Data frame hdrlen according to 802.11n-2009
ieee80211_hdrlen() should account account new HT Control field in 802.11
data frame header introduced by IEEE 802.11n standard.
According to 802.11n-2009 HT Control field is present in data frames
when both of following are met:
1. It is QoS data frame.
2. Order bit is set in Frame Control field.
The change might be totally compatible with legacy non-11n aware frames,
because 802.11-2007 standard states that "all QoS STAs set this subfield
to 0".
Signed-off-by: Andriy V. Tkachuk <andrit@ukr.net>
Acked-by : Benoit Papillault <benoit.papillault@free.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include/linux/ieee80211.h')
| -rw-r--r-- | include/linux/ieee80211.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 842701906ae9..19984958ab7b 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -138,6 +138,8 @@ #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK 0x03 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT 5 +#define IEEE80211_HT_CTL_LEN 4 + struct ieee80211_hdr { __le16 frame_control; __le16 duration_id; |