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mac80211: correct header length calculation

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HT Control field may also be present in management frames, as defined
in 8.2.4.1.10 of 802.11-2012. Account for this in calculation of header
length.

Signed-off-by: Fred Chou <fred.chou.nd@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Fred Chou 2015-01-20 10:17:27 +08:00 committed by Johannes Berg
parent 2af81d6718
commit fb142f4bbb
1 changed files with 6 additions and 0 deletions
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6
net/wireless/util.c
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@ -308,6 +308,12 @@ unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc)
goto out;
}
if (ieee80211_is_mgmt(fc)) {
if (ieee80211_has_order(fc))
hdrlen += IEEE80211_HT_CTL_LEN;
goto out;
}
if (ieee80211_is_ctl(fc)) {
/*
* ACK and CTS are 10 bytes, all others 16. To see how