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hostapd: Fix vht_capab 'Maximum A-MPDU Length Exponent' handling

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As per IEEE Std 802.11ac-2013, 'Maximum A-MPDU Length Exponent' field
value is in the range of 0 to 7. Previous implementation assumed EXP0 to
be the maximum length (bits 23, 24 and 25 set) what is incorrect.

This patch adds options to set it up within the 0 to 7 range.

Signed-off-by: Bartosz Markowski <bartosz.markowski@tieto.com>
This commit is contained in:
Bartosz Markowski 2014-02-26 10:39:47 +01:00 • committed by Jouni Malinen
parent 3bdc651a62
commit 905828fea4
3 changed files with 23 additions and 4 deletions
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2
src/ap/hw_features.c
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@ -764,7 +764,7 @@ static int ieee80211ac_supported_vht_capab(struct hostapd_iface *iface)
VHT_CAP_CHECK(VHT_CAP_MU_BEAMFORMEE_CAPABLE);
VHT_CAP_CHECK(VHT_CAP_VHT_TXOP_PS);
VHT_CAP_CHECK(VHT_CAP_HTC_VHT);
VHT_CAP_CHECK_MAX(VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT);
VHT_CAP_CHECK_MAX(VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MAX);
VHT_CAP_CHECK(VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB);
VHT_CAP_CHECK(VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB);
VHT_CAP_CHECK(VHT_CAP_RX_ANTENNA_PATTERN);